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User:Eas4200c.f08.vqcrew.c/Homework 7/my

MATLAB Coding Problem Continued

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!Full MATLAB Code - Single Celled Airfoil, Shear Analysis
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!Full MATLAB Code - Multi-Celled Airfoil, Shear Analysis
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!Full MATLAB Code - Critical Buckling Shear Stresses and Buckling Modes
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!Full MATLAB Code - Verification of Lambda Consider the 2x2 $$\mathbf{K}\;$$ matrix:
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\displaystyle \left[ \begin{array}{ll} \frac{\lambda (1 + \vartheta^2)^2}{\vartheta^2} &	 \frac{4}{9} \\	 \frac{4}{9} &	 \frac{16 \lambda (1 + \vartheta^2)^2}{\vartheta^2} \end{array} \right] $$

The determinant of this matrix yields the following:

 * $$\left(\frac{\lambda (1 + \vartheta^2)^2}{\vartheta^2}\right)\left(\frac{16 \lambda (1 + \vartheta^2)^2}{\vartheta^2}\right) - \frac{16}{81} = 0$$

Reducing,

 * $$\lambda^2 = \frac{\vartheta^4}{9(1+\vartheta^2)^2}$$

Thus,

 * $$\lambda = \pm \frac{1}{9} \frac{\vartheta^2}{(1+\vartheta^2)}$$

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!Code Output - Single Celled Airfoil, Shear Analysis
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!Code Output - Multi-Celled Airfoil, Shear Analysis
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Figure 17 shows the minimum critical buckling stresses versus aspect ratio. The blue line is for the 2 equation method, the red line for the 5 equation method, and the green line for clamped conditions. As expected, the clamped conditions stresses are higher. Figure 18 shows the buckling mode shapes perspective view.

The calculated minimum shear stress in the skin panels is approximately 2 orders of magnitude lower than the theoretical buckling stress. While this may be evidence of a coding error, assuming there are no coding issues this would indicate the skin panels are not particularly effective at handling shear loads.

LaTeX Code Editor
The provided LaTeX equation editor was initially quite useful, since no members of the group had any prior experience using this coding language. The interface is very straightforward and easy to use, and since the code is auto-generated, it can be cut and pasted directly into the MediaWiki editing field. The editor also included a preview feature, so it was readily apparent if any mistakes were made during the coding process. However, as the semester progressed, the experience gained from manipulating these codes in the HW reports began to render the editor less efficient. Once one has a basic working knowledge of LaTeX coding, it is far easier to just code a tilde above a bold symbol than it is to individually search out the appropriate buttons to generate the code with the editor. While it is still useful for generating larger codes, such as blank matrices and vectors, most of the required coding for the homework assignments is much more easily done by hand than it is using the editor. In short, the editor is a wonderful learning tool for LaTeX coding, but it less useful for experienced users.

InkScape
Initially, the group generated figures and charts for the homework reports using various different softwares. While there was nothing wrong with the individual submissions, compiling a report using figures generated from multiple sources is less than ideal. It is important for these sorts of assignments to maintain a consistent look and feel throughout, as you would with any sort of paper or technical report. In order to better achieve this state, the group elected to start using only InkScape to generate non-MATLAB figures. Employing InkScape allowed the group to generate consistently uniform figures for the assignments, and the difference is very noticeable in a positive way. Furthermore, InkScape is a vector graphics program, which means that a given image will appear the same regardless of of the size it is scaled to, which is very convenient for thumbnailing on MediaWiki. The end result was that the overall quality of the group's submissions was greatly improved after the adoption of InkScape as the preferred figure generating tool.

WikiEd
At the start of the semester, some of the group members elected to employ WikiEd to assist with the generation of MediaWiki content. The experience with this extension to MediaWiki closely paralleled that of the LaTeX code editor. At first, the extension was very helpful. As with the LaTeX editor, the interface for WikiEd is very straightforward and easy to use. Anytime any non-text code is required, one can simply push a button and the code is generated in the editing field. This was very helpful at the beginning of the semester when the group was still getting familiar with MediaWiki. However, as the semester went on, the extensions became more and more cumbersome. In many cases, it is much faster to simply type in the required code than it is to go hunt for the appropriate button to generate it using WikiEd. Also, it became apparent later on that if one is typing code into a WikiEd-modified editing field, and one accidentally clicks the back button on the browser (or hits the browser back key on the keyboard, if applicable), one loses all of the work entrered into the editing field since the last save. Needless to say, this is an extremely irritating bug. As with the LaTeX editor, the WikiEd extension was initially quite useful for learning purposes but became more of a burden as the semester continued.

MediaWiki vs. E-Learning
It is the general opinion of this group that E-Learning is the slightly superior option for this kind of assignment. While MediaWiki is far more powerful in terms of content handling; that is, ability to handle equations, videos, audio files, etc., it is slightly less user-friendly and has less organizational tools. Although E-Learning is notorious for server issues, generally speaking this can be avoided by approaching assignments in a timely manner. Perhaps the biggest advantage over MediaWiki when using E-Learning is that E-Learning has the built-in capability for transmitting grades to students in a confidential manner. MediaWiki has no method for handling this, and as such requires the use of email for grade distribution. All in all, while MediaWiki is a very powerful tool and a useful tool to be familiar with, E-Learning is still a superior option for class use.


license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

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User:Eml4500.f08.team.foskey.ckf/hw7 combo

 Note:

Edit: The correct deformed truss/frame system was solved and the image is at the bottom. A more detailed and correct explanation of the image was also added.

Jin Yu Guan Eml4500.f08.team.guan 18:05, 10 December 2008 (UTC)

Two bar truss frame combination

Problem
This is a two bar system with element 1 being a frame member and element 2 being a truss member. It is being compared to the two truss system and the and two frame member system.

Code
This matlab code is similar to other codes, except it accounts for the rotational displacements and bending moments from element 1

Output
The above code creates the following output

Figure
The above code creates the following figure

In the figure, the red dotted lines are the undeformed truss, the green lines are the deformed truss and frame system, the solid dark blue lines are a deformed frame system. For the combination, element 1 is a frame member, and is on the left; element 2 is a truss member, and is on the right. As one can see, the frame members in all deformed instances are not linear. This is due to the transverse displacement of the beam. Thus, frames are designed to hold transverse loads and displacements as opposed to truss that only hold axial loads and displacement.


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User:Eml4500.f08.delta 6.castrillon/Wiki & E-Learning Comparison

There are two main differences between both applications, each having a deep impact on the experience of the user, i.e. the student. Wikiversity has proved to be based on very sturdy programming code that ensures its reliability, while E-Learning has showcased bugs and other obstacles.

As past experience dictates, E-Learning has caused problems with navegation and file downloads. This problem can be very frustrating as it can lead to crashing of the internet browser, Internet Explorer in my case. Also, the E-Learning site produces various useless pop-up windows that ask for checks and permissions to perform orders from the user. on the other hand, Wikiversity is a very rigid program that is very well maintained and easy to use. It works with any internet browser. You can tell that the site is monitored by site managers constantly to ensure safe, serious, relevant, clean, information is posted.

As far as using E-Learning vs Wikiversity for a classroom purpose, then they both perform diferent functions. For once, E-Learning is able to store documents for the students to download and use. This method requirs a course that relys on homework. The student downloads the homework problems from the site and solves the problems. However, Wikiversity is geared towards posting information online. This method is geared towards a class that requires assignments with the written word such as essays, poems, editorials, etc. It great advantage that Wikiversity has is that the users can edit content and view changes real time. E-Learning does not feature the possibility to edit documents real time for other contributors to witness, as it acts as a way to post different versions of documents, not edit the original.

As far as the EML4500 class goes, I feel that the idea of posting notes online is very advantageous only for the student that did NOT attend class. I think that attending class and having the notes on paper is sufficient, as I learned the material anyways by being in class. Furthermore, having the same set of notes 8 different times seemed superfluous. Having to learn the Wiki code for re-copying notes was not an efficient use of my time, even more since I am a graduating senior who was looking for a job. The aim was to learn about the advantages of the Wiki applications (like being able to immortalize the inforamtion), but I think that reading or hearing about these applications and advantages would have been enough to make me understand. Despite it all, I did gt a firm grasp of the subject and the Wiki code.

The EML4500 class is an engineering course that should be based on complete homework problems for practice, which could be turned in through Wikiversity. Seeing the homework problems online was very useful since they were clear and required minimal time to post. Posting notes was very tedious since learing had occured in the classroom.


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User:Eas4200c.f08.aero.lee/HW7

 See my comments below. Eml4500.f08 10:48, 11 December 2008 (UTC)

= Shear Loading on thin walled open section =

Consider the following open section consisting of 4 stringers:

The steps involved to solve for the shear flow:
 * 1) Find the location of the centroid $$\left(y_c,z_c \right)$$
 * 2) Find $$I_y,I_z,I_{yz}$$
 * 3) Find $$k_y,k_z,k_{yz}$$
 * 4) Follow the path "s" to find the shear flow

= Shear Loading Resistance of Thin-walled Sections =

It is necessary for the analysis of aircraft structures to understand the response of an arbitrary thin-walled section to an applied shear load. As such, the following outline will be used in analysis.

S) Single-cell Sections
 * S.1) Without Stringers
 * S.2) With Stringers

M) Multi-cell Sections
 * M.1) Without Stringers
 * M.2) With Stringers

The analysis is as follows:

S.1) Single-cell Sections Without Stringers
It is known from previous work that shear flow in a thin-wall can be assumed constant. The resultant of the shear flow can be found as the line integral of the shear flow projected onto the axis of interest. The figure below shows an arbitrary shape containing some shear flow.

To calculate the resultant of the shear flow along the z-axis, consider the shear flows from A to B and B to A.

 * $$ R^{Z} = R_{AB}^{Z} + R_{BA}^{Z} = -q\bar{A'B'} + q \bar{B'A'} = 0 $$

As a result, the single-cell section without stringers is shown to be incapable of resisting a shear loading in the z-direction, VZ. Since the Z-axis is chosen arbitrarily, any direction can chosen. Thus, in general, a single-cell section without stringers is incapable of resisting any shear loading whatsoever.

S.2) Single-cell Sections With Stringers
There exist single-cell sections with stringers, such that the shear flow is no longer constant about the perimeter of the section. It is assumed that the thin walls play very little role in shear loading resistance, such that the shear flow can be assumed piece-wise constant between stringers. This is shown in the figure below.

In the above figure,

 * $$ q_{ij} = constant $$

where subscript ij represents the shear flow in the wall along the path from stinger i to stringer j. Furthermore,

 * $$ q_{12} \neq q_{23} \neq q_{31} $$

It is proposed that for a balance of forces, the resultant from all shear flows must balance the applied shear loading condition. For example, if some shear load in the z-direction is placed on the section, then the resultant of shear flow is given as

 * $$ R_Z = V_Z \neq 0 $$

To analyze a section with stringers, the previous method and equations used for an open section must be modified to account for a closed section. Specifically, the available equations are applicable to an open section, such that a path can be drawn beginning at a free surface (where the shear flow is known to be zero. As such, the method of superposition is used to calculate the total shear flow in a closed section with stringers.

First a constant shear flow, q0 is assumed to be present throughout the perimeter of the section as if no stringers are present as shown in the figure below.

Next, the original section is assumed to be cut at a given point in the wall between two stringers. Thus, the resulting section is an open section with a free edge. Since the shear flow at a free edge is zero, and since the shear flow is assumed to be constant between two stringers, the wall section containing the cut is defined to have zero shear flow. Then, the method and equations for analyzing an open section can be implemented to find the piece-wise constant shear flows between the stringers, namely q12', q23', q31'. For the given cut location, it is seen that $$ q_{31}' = 0 $$. This is shown in the figure below.

The result of the superposition is given in equation form as

 * $$ q_{ij} = q_0 + q_{ij}' $$

-Notes from 8 Dec-

 * $$0= {q }^{(1)} + {q }^{(2)}+{q }^{(3)}+{q }^{(4)}=-{q }^{(3)} \neq 0$$

or

 * $$ 0 = \sum_{e=1}^{4} q^{(e)}$$

Note, from 38_2

 * $$ q^{(e)}= n_{z}Q_{z}^{(e)}+n_{y}Q_{y}^{(e)}$$

where

 * $$ n_{z}=-(k_y V_y-k_{yz}V_z)$$

and (for HW7 answer)

 * $$ n_{y}=-(k_z V_z-k_{yz}V_y)$$

so

 * $$ \Sigma q^{(e)}=n_z \sum_{1 }^{4 } Q_z^{(e)}+n_y \sum_1^4Q_y^{(e)}$$

on 41_2,we spoke of ways to determine Q for an area. Refer to the following figure:

Where,

 * $$Q_y ( \hat{z})= \int zdA$$

 * $$M_y=-EI_{yz} \frac{ \partial ^2 v_o}{ \partial z^2} - EI_y \frac{\partial ^2 w_o}{\partial x^2 } $$

and

 * $$M_z=-EI_{z} \frac{ \partial ^2 v_o}{ \partial x^2} - EI_{yz} \frac{\partial ^2 w_o}{\partial x^2 } $$

Where

 * $$\frac{ \partial ^2 v_o}{ \partial x^2}$$

can be noted as $$\chi_y$$

and

 * $$\frac{\partial ^2 w_o}{\partial x^2 }$$

can be noted as $$ \chi_z$$

The equations are rearranged in the following manner to find q for the cell:

 * $$ \left [ \begin{array}{rr} M_y\\ M_z \end{array} \right ] = \left [ \begin{array}{cc} I_y & I_{yz} \\ I_{yz} & I_z \end{array} \right ] \left [ \begin{array}{cc} -E X_z \\ -E X_y \end{array} \right ] $$

 * $$\epsilon _{xx} = -y \chi_y - z \chi_z=  \left [ \begin{array}{cc} z & y \end{array} \right ] \begin{Bmatrix}

- \chi _z \\ - \chi _y \end{Bmatrix}$$

 * $$\sigma _{xx} = E \epsilon _{xx} = E \left [ \begin{array}{cc} z & y \end{array} \right ] \begin{Bmatrix}

- \chi _z \\ - \chi _y \end{Bmatrix} =E \left [ \begin{array}{cc} z & y \end{array} \right ]\frac{1}{E} \check{I}^{-1}\begin{Bmatrix} - M _y \\ - M _z \end{Bmatrix}$$

where

 * $$\check{I} = \begin{bmatrix}

I_y & I_{yz}\\ I_{yz} & I_z \end{bmatrix}$$

and

 * $$\check{I}^{-1} = \frac{1}{D}\begin{bmatrix}

I_z & -I_{yz}\\ -I_{yz} & I_y \end{bmatrix}$$

and to find q:

 * $$q=-\int_{a}^{}{\frac{\partial \sigma _{xx}}{\partial x}}dA$$

where

 * $${\frac{\partial \sigma _{xx}}{\partial x}}=\begin{bmatrix}

z & y \end{bmatrix}I^{-1}\begin{bmatrix} \frac{dM_y}{dx}\\ \\ \frac{dM_z}{dx} \end{bmatrix}$$

M.1) Multicell Sections Without Stringers
NOTES FOR NOV. 21

The figure below depicts an example of a multicell section without stringers

The resultant of the shear flow for a figure of this case can be found by

 * $$R^z= \sum_{i=1}^n R_i^z$$

where n is the number of cells and $$R_i^z$$ is the resultant of the shear flow in the i-th cell.

It has been previously shown that any cell without strings is incapable of resisting shear in the Z direction and therefore

 * $$R_i^z = 0$$

for all i. It then directly follows that

 * $$R^z = 0$$

for multicell sections without stringers.

M.2) Multicell Sections With Stringers
Below is an example of a multicell section with stringers.

To solve for the resultant shear flow in such a system two states need to be analyzed then combined with the principle of superposition. State P1 below shows the closed cell constant shear flow, whereas state P2 below shows the open cell piecewise constant shear flow.

States P1 and P2 shown above are components of the total resultant shear flow, which can be formulated as

 * $$R^z = R^{z1}+R^{z2}$$

where $$R^z$$ is the resultant force of the section depicted at the beginning of the section, $$R^{z1}$$ is the resultant of the state P2, and $$R^{z2}$$ is the resultant of the state P2. Furthermore, from the analysis of single celled section we can expect that

 * $$R^{z1} = \sum{i=1}^n R_i^{z1} = 0 \qquad$$ and $$\qquad R^{z2} = R^{z2} V_2 \ne 0$$

Stringer 3
$$\displaystyle q^{(3)} = -\int_{A_3} \frac{d \sigma_{XX}}{dx} dA_3$$ The 3 designates that this is the shear flow contributed by stringer 3.

Recall:

$$\displaystyle V_y = \frac{M_z}{dx}$$

$$\displaystyle V_z = \frac{M_y}{dx}$$

p.34-3: $$ \displaystyle q_{(3)} = -(k_y V_y - k_{yz} V_z) Q_z^{(3)} - (k_z V_z - k_{yz} V_y) Q_y^{(3)}$$ → Eq. 1 $$ \displaystyle => Q_z^{(3)} = \int_{A_s} y dA$$ and $$ \displaystyle Q_y^{(3)} = \int_{A_s} z dA $$

Stringer 2
$$\displaystyle \tilde q_{23} = \tilde q_{12} - \tilde q_{24} + q^{(2)}$$

Because of the way the cell was cut: $$\displaystyle \tilde q_{12} = 0$$ $$\displaystyle \tilde q_{24} = 0$$

Therefore $$\displaystyle \tilde q_{23} = q^{(2)}$$

$$ \displaystyle q_{(2)} = -(k_y V_y - k_{yz} V_z) Q_z^{(2)} - (k_z V_z - k_{yz} V_y) Q_y^{(2)}$$ → Eq. 1 $$ \displaystyle => Q_z^{(2)} = \int_{A_s} y dA = y_2 A_2$$ and $$ \displaystyle Q_y^{(2)} = \int_{A_s} z dA = z_2 A_2$$

Stringer 4
$$\displaystyle \tilde q_{43} = \tilde q_{24} - \tilde q_{41} + q^{(4)}$$

Because of the way the cell was cut: $$\displaystyle \tilde q_{24} = 0$$ $$\displaystyle \tilde q_{41} = 0$$

Therefore $$\displaystyle \tilde q_{43} = q^{(4)}$$

$$ \displaystyle q_{(4)} = -(k_y V_y - k_{yz} V_z) Q_z^{(4)} - (k_z V_z - k_{yz} V_y) Q_y^{(4)}$$ → Eq. 1 $$ \displaystyle => Q_z^{(4)} = \int_{A_s} y dA = y_4 A_4$$ and $$ \displaystyle Q_y^{(4)} = \int_{A_s} z dA = z_4 A_4$$

Superposition (again)
$$\displaystyle q_{ij} = \tilde q_{ij} + q_{k}$$

$$\displaystyle q_{12} = \tilde q_{12} + q_{1}$$

$$\displaystyle q_{31} = \tilde q_{31} + q_{1}$$

$$\displaystyle q_{24} = \tilde q_{24} + q_{2}$$

$$\displaystyle q_{43} = \tilde q_{43} + q_{4}$$

$$\displaystyle q_{41} = \tilde q_{41} + q_{1}$$

=> 3 Unknowns $$\displaystyle q_1, q_2, and q_3$$: need 3 equations
 * 1) Moment Equation: Take moment of $$\displaystyle V_y, V_z, and {q_{12} ... q_{41}}$$ about any convenient point. (Usually where lines of action of $$\displaystyle V_y and V_z$$ intersect)
 * 2) $$\displaystyle \theta_1 = \theta_2$$
 * 3) $$\displaystyle \theta_2 = \theta_3$$

Solving Problem P2 continued
There are two methods to solve the shear flows of the section with hypothetical cuts (Problem P2):

 * 1) Complete method: free body diagram
 * 2) Consequence of complete method: conservation of shear flows

To expedite the solution of simple problems, we will further examine the conservation of shear flow approach. It is seen that the flow into or out of a stringer, both from the wall sections and the stringer itself, must be conserved. That is, the shear flow arriving at the stringer location must equal that leaving the stringer location. For example, consider the figure below.

To solve for $$ q_{j6}' $$, consider the summation of inflows and outflows.

 * $$ q_{j6}' = q_{2j}' - q_{j5}' - q_{j8}' + q^{(j)} $$

Thus, the outward shear flow from stringer j to stringer 6 is equal to the inward shear flows from 2 to j and the contribution from stringer j itself less the outward shear flow towards stringers 5 and 8. In this manner, shear flow about stringer j is conserved.

Likewise,

 * $$ -q_{2j}' = -q_{j6}' - q_{j5}' - q_{j8}' + q^{(j)} $$

It is seen that the shear flow in from stringer 2 to j and the shear flow from stringer j itself are supplying the shear outflows to stringers 5, 6 and 8. Again, this makes sense from a conservation perspective.

Isolating a Stringer
What if a closed, multicell section is cut in such a manner that a single stringer is isolated? What are the results? Is this allowed?

To answer this question, consider a cut of the interior walls such that stringer 3 is completely isolated. In this case, $$ q_{23}' = q_{31}' = q_{34}' = 0 $$. The resulting shear flow conservation of stringer 3 would produce

 * $$ q_{31}' = q_{23}' - q_{34}' + q^{(3)} $$

Based upon the previous statement that the shear flows in the cut walls are identically zero, the above statement would yield

 * $$ q^{(3)} = -\int_{A_3}^{}{\frac{d \sigma_{xx}}{dx}dA_3} = 0 $$.

Since the area A3 is nonzero and the normal stress is nonzero, this cannot be true. As such, the method of cutting a multicell section cannot be performed in such a way as to isolate any one stringer.

A continuation from stringer isolation
When looking at a closed cell, stringer that is in equilibrium, may help in simplification for the following stringers:

For stringer 1, we may write the following equation for equilibrium:

 * $$\tilde{q_{12}} = \tilde{q}_{31} + \tilde{q}_{41} + q_1$$

where $$\tilde{q}_{31}=0$$

After simplification, the equation becomes:

 * $$\tilde{q_{12}} = \tilde{q}_{41} + q_1$$

For stringer 2, accordingly we may write the following equation for equilibrium:

 * $$\tilde{q_{24}} = \tilde{q}_{12} + \tilde{q}_{23} + q_2$$

where $$\tilde{q}_{23}=0$$

After simplification, the equation becomes:

 * $$\tilde{q_{24}} = \tilde{q}_{12} + q_2$$

= Plotting Buckling Shape under Shear Stress =

First, we can express $$\begin{Bmatrix} C_{22}, C_{13}, C_{31}, C_{33}\end{Bmatrix}$$ in terms of $$C_{11}$$.

For $$\vartheta = 1.5$$ we can accomplish the following:

 * Find $$\lambda$$ for $$\vartheta = 1.5$$ using equation (30)

 * Evaluate for $$k_{sys}$$ using equation (26)

 * Calculate $$[k_{ij}]$$

 * $$\begin{bmatrix} k_{12} & k_{23} & \cdots & k_{25} \\ \vdots & \ddots & & \vdots \\ \vdots & & \ddots & \vdots \\k_{32} & \cdots & \cdots & k_{55}\end{bmatrix} \begin{bmatrix} C_{22} \\ \vdots \\ \vdots \\ C_{33}\end{bmatrix} = \begin{bmatrix} -\frac{u_z}{a}C_{11} \\ 0 \\ 0 \\ 0\end{bmatrix}$$

Then we will need to solve $$\begin{Bmatrix} C_{22}, C_{13}, C_{31}, C_{33}\end{Bmatrix}$$ intersect with $$C_{11}$$. If $$K$$ matrix is expressed as $$\underline{\overline{K}}$$ then its inverse is $$\underline{\overline{K}}^{-1}$$. Therefore, the calculated values for $$\begin{Bmatrix} C_{22}, C_{13}, C_{31}, C_{33}\end{Bmatrix}$$ can be related as:

 * $$\begin{Bmatrix} C_{22}, C_{13}, C_{31}, C_{33}\end{Bmatrix} = \underline{\overline{K}}^{-1}\ \begin{bmatrix} -\frac{u_z}{a}C_{11} \\ 0 \\ 0 \\ 0\end{bmatrix}$$

Looking at this result,

 * $$u_z = C_{11}sin(\frac{\pi x}{a})sin(\frac{\pi y}{b}) + C_{22}sin(\frac{2\pi x}{a})sin(\frac{2\pi y}{b}) + C_{13}sin(\frac{\pi x}{a}) sin(\frac{3\pi y}{b}) + C_{31}sin(\frac{3\pi x}{a})sin(\frac{\pi y}{b}) + C_{33}sin(\frac{3\pi x}{a})sin(\frac{3\pi y}{b})$$

= NACA Airfoil Continued =

This weeks homework incorporated finding the stresses in the airfoil due to shear loads imparted on the wing by drag and lift forces. This would be calculated for both single cell and multicell sections. For the first single cell section, we started with finding just the shear flow and determined from our code the following data:

 * {| style="width:100%" border="0"

Single Cell Airfoil
 * style="width:92%; padding:10px; border:2px solid #8888aa" |
 * style="width:92%; padding:10px; border:2px solid #8888aa" |

Length of FB = 0.25343 m

q_HF = 626.4307 N/m

q_FB = -16006.5727 N/m

q_BE = 626.4307 N/m

q_EH = 32480.5985 N/m

 * }

By dividing our obtained value of shear flow in each member by the thickness of the panel, 2 mm, would could compute the value of shear stress in the panel. Doing this for the panel EH, we determined $$\tau = 1.624e7\ Pa$$. This value is close to the experimental clamped critical stress for large aspect ratios. This is something we would expect as an aircraft wing has a relatively large aspect ratio.

The image to the right shows the buckling shape when adding the five mode; m = 1,2,1,3,3 and n = 1,2,3,1,3.

= Comparison of WebCT & Mediawiki =

As a team, we are in agreement that Mediawiki and WebCT each have benefits and drawbacks. The overriding comparisons are in the areas of collaboration, layout and privacy.

As a means of collaboration, Mediawiki excels. It is established for the expressed purpose of collaboration. It benefits from common internet accessibility, the history of edits and a common document. When all group members are able to see the same document real time and edit as necessary, it makes things much smoother. The ability to track which user made which edits is very useful for gauging contributions and correcting mistakes. WebCT uses discussion boards for collaboration, which severely limits the scope of projects capable. Since no common document is established, there is no means to understand edits rather than constantly exchanging a master document via email or messaging. Ultimately, for this class, the scope of collaboration did not extend as far as was perhaps intended. In general, the assignment was divided based on lecture days and each person made their own posts with little editing. In particular, collaboration across groups was very limited if it even existed at all.

The layout of WebCT lends itself to a more logical repository of common files, such as syllabus, homework assignments, solutions, grades, etc. The file structure is very straightforward for WebCT. However, Mediawiki doesn't have as good a hierarchical structure. This can be confusing and circular at times.

Because WebCT requires an individual login and provides the ability to privately upload individual assignments, it outperforms Mediawiki in terms of privacy. WebCT is a much more individualized platform as compared to Mediawiki. Also, the universal accessibility of Mediawiki reduces the problems of limited bandwidth often encountered during high traffic periods by WebCT.

Regardless of the platform, we feel that submitting homework and notes as was done in this class is not the most effective use of time. It would have been far easier to write out homework assignments and solutions by hand rather than in an electronic format. It was often frustrating to type out the Latex code for equations, taking far longer than just writing it by hand. Furthermore, drawing figures by means of Visio or Inkscape was also troublesome and frustrating. The return on investment for this time was very small. It served more to frustrate and waste time than to reinforce learning. Mediawiki certainly represents a great resource, but may be better used for presenting a final report or project rather than day-to-day homework assignments.

 Let me remind you that the reason that HW weighed 34% of the total course grade was because of the use of Mediawiki in this "new approach"; in the "old approach" with HW written by hand, HW only weighed 10%, or 0% (zero, no HW) when the budget is cut further. Despite your preference to write your HW by hand, and despite your team's lack of a genuine cooperation (see my comments in The best of HW7), your team's HW reports tend to be more decent than many other HW reports. That was because you put in the effort, and because you needed that 34% of the course grade. Image you did a mediocre job in your HW reports (to save time), and relied primarily on your exam grades; you know that many students (including at least two of your own team members who are in more precarious situation) would not have a decent course grade, and would need an even larger grade bailout package. Be careful of what you wished for, it may actually become a reality. Eml4500.f08 10:51, 11 December 2008 (UTC)

In addition, many students (including some from your team) told me that they often looked at the HW reports of the class to review for exams. It is clear that these students would not be able to learn from the best of the class if HW reports were written by hand like the old days. That is not to mention students outside this course, at different place and different time, would not benefit from these HW reports. The next generation of students of this course would use your HW reports as starting points to develop even better HW reports (learn from your work, correct your errors, complete the work you left uncompleted, add their own contributions, record newer course material taught in lectures, solve new problems, etc.)  It will be a continuing development and improvement process through generations of students. Eml4500.f08 19:58, 11 December 2008 (UTC)

= Contributing Team Members =

 * Jared Lee --Eas4200c.f08.aero.lee 21:57, 21 November 2008 (UTC)
 * Ray Strods --Eas4200c.f08.aero.strods 20:32, 24 November 2008 (UTC)
 * Oliver Oyama --Eas4200c.fo8.aero.oyama 20:29, 8 December 2008 (UTC)
 * Thomas McGilvray--Eas4200c.f08.aero.mcgilvray 23:24, 8 December 2008 (UTC)
 * William Kurth --Eas4200c.f08.aero.kurth 15:44, 9 December 2008 (UTC)
 * Gonzalo Barcia --Eas4200c.f08.aero.barcia 16:44, 9 December 2008 (UTC)
 * Melisa Gaar -- Eas4200c.f08.aero.gaar 21:02, 9 December 2008 (UTC)

title: User:Eas4200c.f08.aero.lee/HW7


text:
User:Eml4500.f08.lulz.strack/hw7

ElectricPylonDisplay.m
Command Window Output

Truss

>> ElectricPylonSystem

d =

0           0            0            0  -0.00019023   0.00017465   -0.0001277 -1.4074e-006 -0.00016006  -0.0002967  -0.00012671   0.00032602  -0.00012798    -0.000128  -0.00012792  -0.00054327   0.00044932   0.00030901   0.00046381  -0.00061057     0.001017   0.00064583    0.0010325  -0.00019427    0.0010502  -0.00097027    0.0017167    0.0010338    0.0017162   0.00023259    0.0016833  -0.00064959     0.001683   -0.0013293    0.0023452   0.00064079    0.0021863   -0.0010297    0.0047122    0.0023902    0.0039576   -0.0024165    0.0063605    0.0057328    0.0063605    0.0037877    0.0063605    0.0029803    0.0063614     0.002384    0.0063657    0.0016463    0.0063711   0.00086194    0.0063182  -0.00024268    0.0062289   -0.0013182    0.0061363   -0.0023672    0.0060413   -0.0033231    0.0058839   -0.0051278    0.0055152    -0.012587    0.0067826    0.0042648     0.006996   -0.0063359     0.007012    0.0034574    0.0074006   -0.0043591    0.0071505    0.0029772    0.0071478    0.0020508    0.0071421    0.0012278     0.007182   0.00032026    0.0072816  -0.00073249    0.0074073   -0.0018633    0.0075643   -0.0033872    0.0090005    0.0029772     0.010455   -0.0033872

results =

1.0781e-005 2.1562e+006       862.48 -6.5356e-006 -1.3071e+006     -522.85 6.7339e-006 1.3468e+006       538.71 6.4556e-006 1.2911e+006       516.45 -3.5152e-006 -7.0304e+005     -281.22 -2.3798e-005 -4.7596e+006     -1903.8 -1.2325e-005 -2.465e+006      -986.01 7.1182e-006 1.4236e+006       569.46 1.9269e-005 3.8538e+006       1541.5 -2.8828e-005 -5.7655e+006     -2306.2 -1.8941e-007      -37882      -15.153 8.778e-009      1755.6      0.70224 1.9328e-005 3.8655e+006       1546.2 1.4698e-005 2.9395e+006       1175.8 -1.8494e-005 -3.6988e+006     -1479.5 -2.883e-005 -5.7661e+006     -2306.4 1.7948e-006 3.5896e+005       143.58 2.621e-005  5.242e+006       2096.8 9.8986e-006 1.9797e+006       791.89 -1.8874e-005 -3.7749e+006       -1510 -3.258e-005 -6.5159e+006     -2606.4 2.7892e-006 5.5784e+005       223.14 3.2194e-006 6.4388e+005       257.55 2.9828e-005 5.9656e+006       2386.3 -4.0852e-006 -8.1704e+005     -326.82 -1.9808e-005 -3.9616e+006     -1584.6 1.16e-005   2.32e+006       928.02 -4.0653e-006 -8.1307e+005     -325.23 -2.8778e-005 -5.7556e+006     -2302.2 -1.4237e-007      -28474       -11.39 -4.9677e-006 -9.9353e+005     -397.41 -7.6072e-008      -15214      -6.0857 2.9608e-005 5.9216e+006       2368.6 2.7907e-007       55813       22.325 -2.4358e-005 -4.8717e+006     -1948.7 6.9573e-006 1.3915e+006       556.59 -1.5116e-008     -3023.3      -1.2093 -2.8794e-005 -5.7588e+006     -2303.5 -2.427e-005 -4.854e+006      -1941.6 6.9522e-006 1.3904e+006       556.17 -9.4154e-007 -1.8831e+005     -75.323 1.129e-005  2.258e+006       903.22 -3.16e-006  -6.32e+005       -252.8 -2.0051e-005 -4.0102e+006     -1604.1 -1.0133e-019 -2.0266e-008 -8.1063e-012 7.3233e-019 1.4647e-007  5.8586e-011 3.2073e-007       64147       25.659 1.3501e-006 2.7001e+005       108.01 1.3575e-006 2.7149e+005        108.6 -1.0389e-005 -2.0778e+006     -831.13 -2.2136e-005 -4.4271e+006     -1770.9 -2.9388e-005 -5.8777e+006     -2351.1 -3.6774e-005 -7.3549e+006     -2941.9 -4.331e-005 -8.662e+006      -3464.8 -4.3478e-005 -8.6957e+006     -3478.3 0           0            0  3.0942e-019  6.1883e-008  2.4753e-011 -2.6985e-019 -5.397e-008 -2.1588e-011 3.0512e-019 6.1024e-008  2.4409e-011 -8.8522e-007 -1.7704e+005     -70.818 1.1034e-006 2.2069e+005       88.276 -9.5965e-007 -1.9193e+005     -76.772 9.9436e-007 1.9887e+005       79.549 1.0732e-005 2.1464e+006       858.56 -1.0415e-005 -2.083e+006      -833.19 1.1448e-005 2.2895e+006       915.81 -1.1321e-005 -2.2643e+006     -905.71 1.0517e-005 2.1035e+006       841.38 -1.0732e-005 -2.1464e+006     -858.56 7.0689e-006 1.4138e+006       565.51 -6.8859e-006 -1.3772e+006     -550.87 7.9177e-006 1.5835e+006       633.42 -1.8464e-005 -3.6928e+006     -1477.1 -4.8696e-007      -97393      -38.957 -1.1845e-007      -23690      -9.4762 1.5604e-007       31208       12.483 4.5239e-005 9.0479e+006       3619.2 4.6964e-019 9.3927e-008  3.7571e-011 4.5158e-005 9.0317e+006       3612.7 -7.9385e-019 -1.5877e-007 -6.3508e-011 4.5256e-005 9.0511e+006       3620.5 -6.5877e-007 -1.3175e+005     -52.702 -1.4822e-006 -2.9645e+005     -118.58 8.9829e-006 1.7966e+006       718.63 2.2438e-005 4.4876e+006         1795 3.3117e-005 6.6233e+006       2649.3 3.8878e-005 7.7755e+006       3110.2 -5.3704e-020 -1.0741e-008 -4.2963e-012 0           0            0 -4.8034e-020 -9.6069e-009 -3.8428e-012 0           0            0

max_compressive_stress =

-8.6957e+006

element_number =

55

max_tensile_stress =

9.0511e+006

element_number =

81

min_eigenvalues =

132.16      2468.4       2940.3

min_eigen_num =

82   85    86

lowest_vibrational_periods =

0.54654     0.12647      0.11587

Frame

dF =

0           0            0            0            0            0  -0.00019023   0.00017464  9.1757e-006 -0.00012769 -1.4086e-006 -2.4036e-005 -0.00016005  -0.0002967  9.1254e-006 -0.0001267  0.00032601 -4.1467e-005 -0.00012797   -0.000128 -6.1763e-005 -0.00012791 -0.00054327 -3.4931e-005 0.00044932    0.000309  -0.00011737   0.00046381  -0.00061057  -0.00011826     0.001017   0.00064582  -0.00016353    0.0010325  -0.00019427  -0.00013889    0.0010502  -0.00097027  -0.00015648    0.0017167    0.0010338  -0.00024125    0.0017162    0.0002326  -0.00017832    0.0016833  -0.00064959  -0.00016107     0.001683   -0.0013293  -0.00019661    0.0023452   0.00064079  -0.00028233    0.0021862   -0.0010297  -0.00022023     0.004712    0.0023901   -0.0003608    0.0039576   -0.0024164  -0.00033295    0.0063604    0.0057326  -0.00022721    0.0063604    0.0037875  -0.00022759    0.0063604    0.0029802  -0.00022392    0.0063612    0.0023839  -0.00023194    0.0063655    0.0016463  -0.00021304    0.0063709   0.00086187  -0.00020968    0.0063181   -0.0002427  -0.00024756    0.0062287   -0.0013181  -0.00031262    0.0061362   -0.0023672  -0.00036099    0.0060411    -0.003323  -0.00041992    0.0058837   -0.0051276  -0.00057906    0.0055151    -0.012586   -0.0010709    0.0067824    0.0042646  -0.00022701    0.0069958   -0.0063358  -0.00065704    0.0070118    0.0034572  -0.00022802    0.0074004    -0.004359  -0.00048349    0.0071503    0.0029771    -0.000229    0.0071476    0.0020507  -0.00022519    0.0071419    0.0012277  -0.00021034    0.0071818   0.00032022  -0.00022274    0.0072814  -0.00073249  -0.00027283    0.0074071   -0.0018632  -0.00034933    0.0075641   -0.0033871  -0.00041223    0.0090003    0.0029771  -0.00023027     0.010455   -0.0033871  -0.00035946

fa =

12.113           0      -1520.2       13.647       4.7645      -1520.2       15.182       9.5289      -1520.2       12.113            0      -654.71       18.291       4.7645      -654.71       24.468       9.5289      -654.71       15.182       9.5289        538.7       19.825       9.5289        538.7       24.468       9.5289        538.7       24.468       9.5289       662.83       30.525       4.7645       662.83       36.581            0       662.83       24.468       9.5289      -281.21       29.071       9.5289      -281.21       33.674       9.5289      -281.21       36.581            0      -1285.2       35.128       4.7645      -1285.2       33.674       9.5289      -1285.2       15.182       9.5289       404.52       19.825       13.571       404.52       24.468       17.612       404.52       33.674       9.5289       209.49       29.071       13.571       209.49       24.468       17.612       209.49       15.182       9.5289       598.85       16.474       13.571       598.85       17.766       17.612       598.85       33.674       9.5289       302.98       32.382       13.571       302.98        31.09       17.612       302.98       17.766       17.612      -15.156       21.117       17.612      -15.156       24.468       17.612      -15.156       24.468       17.612      0.70819       27.779       17.612      0.70819        31.09       17.612      0.70819       17.766       17.612         5419       19.098        21.65         5419       20.431       25.688         5419       24.468       17.612       5115.2        22.45        21.65       5115.2       20.431       25.688       5115.2       24.468       17.612       5243.7       26.487        21.65       5243.7       28.506       25.688       5243.7        31.09       17.612       5583.1       29.798        21.65       5583.1       28.506       25.688       5583.1       20.431       25.688       143.57       24.468       25.688       143.57       28.506       25.688       143.57       20.431       25.688        10514       19.664       27.707        10514       18.896       29.725        10514       20.431       25.688       8170.8        22.45       27.707       8170.8       24.468       29.725       8170.8       28.506       25.688       7967.7       26.487       27.707       7967.7       24.468       29.725       7967.7       28.506       25.688        10932       29.233       27.707        10932        29.96       29.725        10932       18.896       29.725        223.1       21.682       29.725        223.1       24.468       29.725        223.1       24.468       29.725       257.54       27.214       29.725       257.54        29.96       29.725       257.54       18.896       29.725        13045        18.17       31.744        13045       17.443       33.763        13045       18.896       29.725        12088       20.027       31.744        12088       21.157       33.763        12088       24.468       29.725        10475       22.813       31.744        10475       21.157       33.763        10475       24.468       29.725       9970.7       26.124       31.744       9970.7       27.779       33.763       9970.7        29.96       29.725        11038       28.869       31.744        11038       27.779       33.763        11038        29.96       29.725        11797       30.686       31.744        11797       31.413       33.763        11797       17.443       33.763      -11.502         19.3       33.763      -11.502       21.157       33.763      -11.502       21.157       33.763      -397.41       24.468       33.763      -397.41       27.779       33.763      -397.41       27.779       33.763       -6.051       29.596       33.763       -6.051       31.413       33.763       -6.051       17.443       33.763        28144       15.989       37.764        28144       14.536       41.766        28144       17.443       33.763        16535        18.25       35.051        16535       19.058       36.339        16535       21.157       33.763        15140       20.108       35.051        15140       19.058       36.339        15140       27.779       33.763        12107       28.829       35.051        12107       29.879       36.339        12107       31.413       33.763        13426       30.646       35.051        13426       29.879       36.339        13426       31.413       33.763        21371       32.867       37.764        21371        34.32       41.766        21371       19.058       36.339        26805       16.797       39.052        26805       14.536       41.766        26805       29.879       36.339        20207         32.1       39.052        20207        34.32       41.766        20207       14.536       41.766        18542       13.324       45.109        18542       12.113       48.452        18542       14.536       41.766        17643       16.231       45.109        17643       17.927       48.452        17643        34.32       41.766        24351       32.665       45.109        24351       31.009       48.452        24351        34.32       41.766        23438       35.532       45.109        23438       36.743       48.452        23438            0       48.452 -4.3248e-005 4.2799      48.452 -4.3248e-005 8.5599      48.452 -4.3248e-005 8.5599      48.452    0.0012651       10.336       48.452    0.0012651       12.113       48.452    0.0012651       12.113       48.452       25.644       13.405       48.452       25.644       14.697       48.452       25.644       14.697       48.452       108.06       16.312       48.452       108.06       17.927       48.452       108.06       17.927       48.452       108.68       19.906       48.452       108.68       21.884       48.452       108.68       21.884       48.452      -831.05       24.428       48.452      -831.05       26.972       48.452      -831.05       26.972       48.452      -1770.8       28.991       48.452      -1770.8       31.009       48.452      -1770.8       31.009       48.452        -2351       32.584       48.452        -2351       34.159       48.452        -2351       34.159       48.452      -2941.8       35.451       48.452      -2941.8       36.743       48.452      -2941.8       36.743       48.452      -3464.7        38.56       48.452      -3464.7       40.377       48.452      -3464.7       40.377       48.452      -3477.9       44.616       48.452      -3477.9       48.856       48.452      -3477.9            0       48.452       5022.9       3.2301       49.381       5022.9       6.4603        50.31       5022.9       8.5599       48.452        12045       7.5101       49.381        12045       6.4603        50.31        12045       8.5599       48.452        16214       9.2867       49.886        16214       10.013       51.319        16214       12.113       48.452        14666       11.063       49.886        14666       10.013       51.319        14666       12.113       48.452        18199       12.113       50.188        18199       12.113       51.925        18199       14.697       48.452        14585       13.405       50.188        14585       12.113       51.925        14585       14.697       48.452        16713       15.424       50.188        16713       16.151       51.925        16713       17.927       48.452        16041       17.039       50.188        16041       16.151       51.925        16041       17.927       48.452        15305       18.977       50.188        15305       20.027       51.925        15305       21.884       48.452        15662       20.956       50.188        15662       20.027       51.925        15662       21.884       48.452        14986       23.176       50.188        14986       24.468       51.925        14986       26.972       48.452        16141        25.72       50.188        16141       24.468       51.925        16141       26.972       48.452        19380       27.941       50.188        19380        28.91       51.925        19380       31.009       48.452        20754        29.96       50.188        20754        28.91       51.925        20754       31.009       48.452        24395       31.857       50.188        24395       32.705       51.925        24395       34.159       48.452        27010       33.432       50.188        27010       32.705       51.925        27010       34.159       48.452        26392       35.451       50.188        26392       36.743       51.925        26392       36.743       48.452        35087       36.743       50.188        35087       36.743       51.925        35087       36.743       48.452        30192       37.833       49.886        30192       38.923       51.319        30192       40.377       48.452        37749        39.65       49.886        37749       38.923       51.319        37749       40.377       48.452        32431       41.386       49.381        32431       42.396        50.31        32431       48.856       48.452        17622       45.626       49.381        17622       42.396        50.31        17622       6.4603        50.31       4967.8       8.2369       50.814       4967.8       10.013       51.319       4967.8       42.396        50.31       8950.5       40.659       50.814       8950.5       38.923       51.319       8950.5       10.013       51.319       5070.9       11.063       51.622       5070.9       12.113       51.925       5070.9       38.923       51.319         5787       37.833       51.622         5787       36.743       51.925         5787       12.113       51.925      -52.735       14.132       51.925      -52.735       16.151       51.925      -52.735       16.151       51.925      -118.65       18.089       51.925      -118.65       20.027       51.925      -118.65       20.027       51.925       718.56       22.248       51.925       718.56       24.468       51.925       718.56       24.468       51.925         1795       26.689       51.925         1795        28.91       51.925         1795        28.91       51.925       2649.3       30.808       51.925       2649.3       32.705       51.925       2649.3       32.705       51.925       3110.1       34.724       51.925       3110.1       36.743       51.925       3110.1       12.113       51.925        18327       12.113       55.962        18327       12.113           60        18327       16.151       51.925        16416       14.132       55.962        16416       12.113           60        16416       32.705       51.925        27005       34.724       55.962        27005       36.743           60        27005       36.743       51.925        28638       36.743       55.962        28638       36.743           60        28638

bma =

12.113           0     0.022994       13.647       4.7645    0.0024442       15.182       9.5289    -0.018106       12.113            0    0.0081231       18.291       4.7645   -0.0041078       24.468       9.5289    -0.016339       15.182       9.5289    -0.029398       19.825       9.5289   -0.0095366       24.468       9.5289     0.010324       24.468       9.5289      0.01673       30.525       4.7645    0.0041588       36.581            0   -0.0084124       24.468       9.5289    -0.033187       29.071       9.5289    0.0096057       33.674       9.5289     0.052398       36.581            0    -0.052715       35.128       4.7645    0.0024426       33.674       9.5289     0.057601       15.182       9.5289     -0.01314       19.825       13.571    -0.015365       24.468       17.612     -0.01759       33.674       9.5289     0.036926       29.071       13.571     -0.01543       24.468       17.612    -0.067786       15.182       9.5289     0.048155       16.474       13.571    -0.015913       17.766       17.612    -0.079982       33.674       9.5289    -0.044294       32.382       13.571    -0.013844        31.09       17.612     0.016607       17.766       17.612    -0.046563       21.117       17.612    -0.008075       24.468       17.612     0.030413       24.468       17.612    -0.023904       27.779       17.612     0.010805        31.09       17.612     0.045515       17.766       17.612      0.12186       19.098        21.65    -0.023801       20.431       25.688     -0.16946       24.468       17.612      0.22808        22.45        21.65    -0.016423       20.431       25.688     -0.26092       24.468       17.612     0.048107       26.487        21.65    -0.016687       28.506       25.688     -0.08148        31.09       17.612      0.10335       29.798        21.65    -0.026208       28.506       25.688     -0.15577       20.431       25.688    0.0075088       24.468       25.688  -0.00029532       28.506       25.688   -0.0080994       20.431       25.688       0.7806       19.664       27.707    -0.028498       18.896       29.725      -0.8376       20.431       25.688      0.10201        22.45       27.707    -0.010053       24.468       29.725     -0.12211       28.506       25.688      0.55492       26.487       27.707   -0.0096357       24.468       29.725     -0.57419       28.506       25.688      0.17591       29.233       27.707    -0.023751        29.96       29.725     -0.22341       18.896       29.725     0.013049       21.682       29.725     0.011789       24.468       29.725     0.010529       24.468       29.725     0.010025       27.214       29.725   -0.0085411        29.96       29.725    -0.027107       18.896       29.725       1.0434        18.17       31.744      -0.0483       17.443       33.763        -1.14       18.896       29.725      0.27371       20.027       31.744   -0.0085272       21.157       33.763     -0.29076       24.468       29.725      0.71637       22.813       31.744    -0.020138       21.157       33.763     -0.75665       24.468       29.725      0.18105       26.124       31.744    -0.011324       27.779       33.763     -0.20369        29.96       29.725      0.79461       28.869       31.744   -0.0026649       27.779       33.763     -0.79994        29.96       29.725      0.32132       30.686       31.744    -0.024934       31.413       33.763     -0.37119       17.443       33.763       0.0198         19.3       33.763     0.045175       21.157       33.763      0.07055       21.157       33.763     0.095071       24.468       33.763    0.0069498       27.779       33.763    -0.081172       27.779       33.763    -0.062273       29.596       33.763     -0.02608       31.413       33.763     0.010113       17.443       33.763      0.82758       15.989       37.764    -0.037442       14.536       41.766     -0.90246       17.443       33.763      0.66146        18.25       35.051    -0.036031       19.058       36.339     -0.73352       21.157       33.763       1.6168       20.108       35.051     -0.08346       19.058       36.339      -1.7837       27.779       33.763      0.31977       28.829       35.051    -0.047475       29.879       36.339     -0.41472       31.413       33.763       1.6245       30.646       35.051    -0.021012       29.879       36.339      -1.6665       31.413       33.763      0.21494       32.867       37.764    -0.042703        34.32       41.766     -0.30034       19.058       36.339       1.2596       16.797       39.052    -0.029621       14.536       41.766      -1.3189       29.879       36.339      0.13701         32.1       39.052    -0.042864        34.32       41.766     -0.22274       14.536       41.766      0.89574       13.324       45.109     0.051327       12.113       48.452     -0.79309       14.536       41.766      0.45314       16.231       45.109     0.052554       17.927       48.452     -0.34803        34.32       41.766       1.0151       32.665       45.109    0.0072661       31.009       48.452      -1.0006        34.32       41.766       0.5275       35.532       45.109    -0.032612       36.743       48.452     -0.59272            0       48.452   0.00020202       4.2799       48.452  -0.00011786       8.5599       48.452  -0.00043774       8.5599       48.452   -0.0038971       10.336       48.452    0.0027601       12.113       48.452    0.0094173       12.113       48.452    -0.025728       13.405       48.452   -0.0082818       14.697       48.452    0.0091644       14.697       48.452    -0.013445       16.312       48.452     0.015603       17.927       48.452      0.04465       17.927       48.452     0.055359       19.906       48.452    0.0022659       21.884       48.452    -0.050827       21.884       48.452     0.016315       24.428       48.452    -0.019854       26.972       48.452    -0.056022       26.972       48.452     0.011473       28.991       48.452    -0.042972       31.009       48.452    -0.097416       31.009       48.452    -0.022087       32.584       48.452    -0.040959       34.159       48.452    -0.059832       34.159       48.452     0.066558       35.451       48.452    -0.060811       36.743       48.452     -0.18818       36.743       48.452     -0.10405        38.56       48.452     -0.11678       40.377       48.452      -0.1295       40.377       48.452      -0.2579       44.616       48.452     -0.15468       48.856       48.452    -0.051457            0       48.452     0.020854       3.2301       49.381  7.9562e-005 6.4603       50.31    -0.020695       8.5599       48.452       2.2694       7.5101       49.381   0.00055068       6.4603        50.31      -2.2683       8.5599       48.452      0.62211       9.2867       49.886  -0.00035528       10.013       51.319     -0.62282       12.113       48.452        1.619       11.063       49.886   -0.0030813       10.013       51.319      -1.6251       12.113       48.452       1.0355       12.113       50.188   -0.0039046       12.113       51.925      -1.0433       14.697       48.452       1.3603       13.405       50.188    0.0018119       12.113       51.925      -1.3567       14.697       48.452      0.60014       15.424       50.188    0.0047791       16.151       51.925     -0.59058       17.927       48.452       1.3159       17.039       50.188    -0.008309       16.151       51.925      -1.3325       17.927       48.452      0.42979       18.977       50.188    0.0017763       20.027       51.925     -0.42624       21.884       48.452       1.2303       20.956       50.188  -0.00044645       20.027       51.925      -1.2312       21.884       48.452      0.32859       23.176       50.188   -0.0080473       24.468       51.925     -0.34469       26.972       48.452       1.3859        25.72       50.188     0.015458       24.468       51.925       -1.355       26.972       48.452      0.53437       27.941       50.188    -0.016946        28.91       51.925     -0.56826       31.009       48.452       1.7494        29.96       50.188     0.026152        28.91       51.925      -1.6971       31.009       48.452        0.761       31.857       50.188    -0.025335       32.705       51.925     -0.81167       34.159       48.452       2.0868       33.432       50.188    0.0082603       32.705       51.925      -2.0703       34.159       48.452      0.52651       35.451       50.188    -0.031565       36.743       51.925     -0.58964       36.743       48.452        1.838       36.743       50.188    0.0059089       36.743       51.925      -1.8262       36.743       48.452      0.68174       37.833       49.886    -0.047064       38.923       51.319     -0.77587       40.377       48.452       3.9142        39.65       49.886     0.079287       38.923       51.319      -3.7556       40.377       48.452      0.96027       41.386       49.381    -0.075804       42.396        50.31      -1.1119       48.856       48.452        4.434       45.626       49.381      0.16418       42.396        50.31      -4.1056       6.4603        50.31     0.037974       8.2369       50.814  -0.00072706       10.013       51.319    -0.039428       42.396        50.31       5.0698       40.659       50.814      0.12798       38.923       51.319      -4.8139       10.013       51.319     0.063037       11.063       51.622    -0.001194       12.113       51.925    -0.065425       38.923       51.319       6.2874       37.833       51.622     0.083975       36.743       51.925      -6.1194       12.113       51.925   -0.0066914       14.132       51.925    0.0025132       16.151       51.925     0.011718       16.151       51.925     0.032676       18.089       51.925     0.010221       20.027       51.925    -0.012235       20.027       51.925      0.03654       22.248       51.925   -0.0074467       24.468       51.925    -0.051434       24.468       51.925     0.008706       26.689       51.925    -0.030071        28.91       51.925    -0.068849        28.91       51.925    0.0017025       30.808       51.925    -0.053755       32.705       51.925     -0.10921       32.705       51.925    -0.028189       34.724       51.925    -0.041539       36.743       51.925    -0.054889       12.113       51.925      0.45456       12.113       55.962  -0.00041857       12.113           60      -0.4554       16.151       51.925       0.5839       14.132       55.962   -0.0014983       12.113           60      -0.5869       32.705       51.925      0.32595       34.724       55.962   -0.0029912       36.743           60     -0.33193       36.743       51.925      0.78191       36.743       55.962     0.017425       36.743           60     -0.74706

Va =

12.113           0   -0.0041055       13.647       4.7645   -0.0041055       15.182       9.5289   -0.0041055       12.113            0   -0.0015678       18.291       4.7645   -0.0015678       24.468       9.5289   -0.0015678       15.182       9.5289    0.0042773       19.825       9.5289    0.0042773       24.468       9.5289    0.0042773       24.468       9.5289   -0.0016314       30.525       4.7645   -0.0016314       36.581            0   -0.0016314       24.468       9.5289    0.0092967       29.071       9.5289    0.0092967       33.674       9.5289    0.0092967       36.581            0     0.011073       35.128       4.7645     0.011073       33.674       9.5289     0.011073       15.182       9.5289  -0.00036143       19.825       13.571  -0.00036143       24.468       17.612  -0.00036143       33.674       9.5289   -0.0085471       29.071       13.571   -0.0085471       24.468       17.612   -0.0085471       15.182       9.5289    -0.015099       16.474       13.571    -0.015099       17.766       17.612    -0.015099       33.674       9.5289    0.0071763       32.382       13.571    0.0071763        31.09       17.612    0.0071763       17.766       17.612     0.011485       21.117       17.612     0.011485       24.468       17.612     0.011485       24.468       17.612     0.010483       27.779       17.612     0.010483        31.09       17.612     0.010483       17.766       17.612    -0.034258       19.098        21.65    -0.034258       20.431       25.688    -0.034258       24.468       17.612    -0.054161        22.45        21.65    -0.054161       20.431       25.688    -0.054161       24.468       17.612    -0.014353       26.487        21.65    -0.014353       28.506       25.688    -0.014353        31.09       17.612    -0.030561       29.798        21.65    -0.030561       28.506       25.688    -0.030561       20.431       25.688   -0.0019328       24.468       25.688   -0.0019328       28.506       25.688   -0.0019328       20.431       25.688     -0.37464       19.664       27.707     -0.37464       18.896       29.725     -0.37464       20.431       25.688    -0.039249        22.45       27.707    -0.039249       24.468       29.725    -0.039249       28.506       25.688     -0.19774       26.487       27.707     -0.19774       24.468       29.725     -0.19774       28.506       25.688    -0.093054       29.233       27.707    -0.093054        29.96       29.725    -0.093054       18.896       29.725  -0.00045216       21.682       29.725  -0.00045216       24.468       29.725  -0.00045216       24.468       29.725    -0.006762       27.214       29.725    -0.006762        29.96       29.725    -0.006762       18.896       29.725     -0.50877        18.17       31.744     -0.50877       17.443       33.763     -0.50877       18.896       29.725     -0.12198       20.027       31.744     -0.12198       21.157       33.763     -0.12198       24.468       29.725      -0.2821       22.813       31.744      -0.2821       21.157       33.763      -0.2821       24.468       29.725    -0.073683       26.124       31.744    -0.073683       27.779       33.763    -0.073683        29.96       29.725     -0.34749       28.869       31.744     -0.34749       27.779       33.763     -0.34749        29.96       29.725     -0.16137       30.686       31.744     -0.16137       31.413       33.763     -0.16137       17.443       33.763     0.013662         19.3       33.763     0.013662       21.157       33.763     0.013662       21.157       33.763    -0.026616       24.468       33.763    -0.026616       27.779       33.763    -0.026616       27.779       33.763     0.019919       29.596       33.763     0.019919       31.413       33.763     0.019919       17.443       33.763     -0.20319       15.989       37.764     -0.20319       14.536       41.766     -0.20319       17.443       33.763      -0.4588        18.25       35.051      -0.4588       19.058       36.339      -0.4588       21.157       33.763      -1.0232       20.108       35.051      -1.0232       19.058       36.339      -1.0232       27.779       33.763     -0.22101       28.829       35.051     -0.22101       29.879       36.339     -0.22101       31.413       33.763      -1.0976       30.646       35.051      -1.0976       29.879       36.339      -1.0976       31.413       33.763    -0.060518       32.867       37.764    -0.060518        34.32       41.766    -0.060518       19.058       36.339     -0.36503       16.797       39.052     -0.36503       14.536       41.766     -0.36503       29.879       36.339    -0.051302         32.1       39.052    -0.051302        34.32       41.766    -0.051302       14.536       41.766     -0.23747       13.324       45.109     -0.23747       12.113       48.452     -0.23747       14.536       41.766     -0.10686       16.231       45.109     -0.10686       17.927       48.452     -0.10686        34.32       41.766     -0.27015       32.665       45.109     -0.27015       31.009       48.452     -0.27015        34.32       41.766     -0.15752       35.532       45.109     -0.15752       36.743       48.452     -0.15752            0       48.452 -7.4739e-005 4.2799      48.452 -7.4739e-005 8.5599      48.452 -7.4739e-005 8.5599      48.452    0.0037472       10.336       48.452    0.0037472       12.113       48.452    0.0037472       12.113       48.452     0.013503       13.405       48.452     0.013503       14.697       48.452     0.013503       14.697       48.452     0.017985       16.312       48.452     0.017985       17.927       48.452     0.017985       17.927       48.452    -0.026835       19.906       48.452    -0.026835       21.884       48.452    -0.026835       21.884       48.452    -0.014219       24.428       48.452    -0.014219       26.972       48.452    -0.014219       26.972       48.452    -0.026968       28.991       48.452    -0.026968       31.009       48.452    -0.026968       31.009       48.452    -0.011985       32.584       48.452    -0.011985       34.159       48.452    -0.011985       34.159       48.452    -0.098578       35.451       48.452    -0.098578       36.743       48.452    -0.098578       36.743       48.452   -0.0070024        38.56       48.452   -0.0070024       40.377       48.452   -0.0070024       40.377       48.452     0.024347       44.616       48.452     0.024347       48.856       48.452     0.024347            0       48.452   -0.0061812       3.2301       49.381   -0.0061812       6.4603        50.31   -0.0061812       8.5599       48.452      -1.6187       7.5101       49.381      -1.6187       6.4603        50.31      -1.6187       8.5599       48.452     -0.38732       9.2867       49.886     -0.38732       10.013       51.319     -0.38732       12.113       48.452     -0.91295       11.063       49.886     -0.91295       10.013       51.319     -0.91295       12.113       48.452     -0.59865       12.113       50.188     -0.59865       12.113       51.925     -0.59865       14.697       48.452     -0.62772       13.405       50.188     -0.62772       12.113       51.925     -0.62772       14.697       48.452     -0.31631       15.424       50.188     -0.31631       16.151       51.925     -0.31631       17.927       48.452       -0.679       17.039       50.188       -0.679       16.151       51.925       -0.679       17.927       48.452     -0.21096       18.977       50.188     -0.21096       20.027       51.925     -0.21096       21.884       48.452     -0.62508       20.956       50.188     -0.62508       20.027       51.925     -0.62508       21.884       48.452     -0.15555       23.176       50.188     -0.15555       24.468       51.925     -0.15555       26.972       48.452     -0.64028        25.72       50.188     -0.64028       24.468       51.925     -0.64028       26.972       48.452     -0.27728       27.941       50.188     -0.27728        28.91       51.925     -0.27728       31.009       48.452     -0.84936        29.96       50.188     -0.84936        28.91       51.925     -0.84936       31.009       48.452     -0.40696       31.857       50.188     -0.40696       32.705       51.925     -0.40696       34.159       48.452      -1.1043       33.432       50.188      -1.1043       32.705       51.925      -1.1043       34.159       48.452     -0.25787       35.451       50.188     -0.25787       36.743       51.925     -0.25787       36.743       48.452      -1.0552       36.743       50.188      -1.0552       36.743       51.925      -1.0552       36.743       48.452      -0.4047       37.833       49.886      -0.4047       38.923       51.319      -0.4047       40.377       48.452      -2.3862        39.65       49.886      -2.3862       38.923       51.319      -2.3862       40.377       48.452     -0.75536       41.386       49.381     -0.75536       42.396        50.31     -0.75536       48.856       48.452      -1.2704       45.626       49.381      -1.2704       42.396        50.31      -1.2704       6.4603        50.31    -0.020955       8.2369       50.814    -0.020955       10.013       51.319    -0.020955       42.396        50.31      -2.7332       40.659       50.814      -2.7332       38.923       51.319      -2.7332       10.013       51.319    -0.058787       11.063       51.622    -0.058787       12.113       51.925    -0.058787       38.923       51.319      -5.4827       37.833       51.622      -5.4827       36.743       51.925      -5.4827       12.113       51.925    0.0045594       14.132       51.925    0.0045594       16.151       51.925    0.0045594       16.151       51.925    -0.011587       18.089       51.925    -0.011587       20.027       51.925    -0.011587       20.027       51.925    -0.019807       22.248       51.925    -0.019807       24.468       51.925    -0.019807       24.468       51.925    -0.017462       26.689       51.925    -0.017462        28.91       51.925    -0.017462        28.91       51.925    -0.029223       30.808       51.925    -0.029223       32.705       51.925    -0.029223       32.705       51.925   -0.0066128       34.724       51.925   -0.0066128       36.743       51.925   -0.0066128       12.113       51.925     -0.11268       12.113       55.962     -0.11268       12.113           60     -0.11268       16.151       51.925     -0.12968       14.132       55.962     -0.12968       12.113           60     -0.12968       32.705       51.925    -0.072866       34.724       55.962    -0.072866       36.743           60    -0.072866       36.743       51.925     -0.18934       36.743       55.962     -0.18934       36.743           60     -0.18934

max_bending_moment =

48.856

ans =

55

max_shear_force =

48.856

ans =

55

min_eigenvalues =

132.16      2468.4       2940.3

min_eigen_num =

82   85    86

lowest_vibrational_periods =

0.54654     0.12647      0.11587

In the image above, there exists two lines in the deformed shape that overlap each other. Although it is hard to tell, the truss deformation (solid blue) differs only slightly from the frame deformation (dotted black). The difference is on the order of less than a millimeter. The magnification factor (m) for the deformation is 1000.

This system is not statically determinate. With 91 elements, there are way more unknown values than possible equilibrium statics equations.

The lowest eigenvalues and vibrational periods are almost identical for both cases. Rounding and calculation errors cause the differences.

title: User:Eml4500.f08.lulz.strack/hw7


text: File:Sigma cr.jpg

title: File:Sigma cr.jpg


text: File:Travis mat.JPG

title: File:Travis mat.JPG


text:
User:Eas4200c.f08.blue.a/Lecture 40

This would seem to imply that:

However, this is not the case, this situation is not possible.

$$0=q^{(1)}+q^{(2)}+q^{(3)}+q^{(4)}$$

is actually correct, with:

$$q^{(e)}=n_{z}Q_{z}^{(e)}+n_{y}Q_{y}^{(e)}$$

Where the values of n are given by:

$$n_{z}=-(k_{y}V_{y}-k_{yz}V_{z})$$

and

$$n_{y}=-(k_{z}V_{z}-k_{yz}V_{y})$$

$$Q(\hat{z})=\int_{A(\hat{z)}}^{}{zdA}$$

and, by the Mean value theorem

$$Q_{y}=z_{c}\oint_{A}^{}{dA}=0$$

Read and Report - Bidirectional Bending
Under bidirectional bending, the displacements in the three orthogonal directions is given as

$$u=u_{0}(x)+z\psi _{y}(x)+y\psi _{z}(x)$$

$$v=v_{0}(x)$$

$$w=w_{0}(x)$$

Assume that $$\gamma _{xy}=\gamma _{xz}=0$$ and $$du_{0}/dx=0$$ and find

$$\psi _{z}=-\frac{dv_{0}}{dx}$$

$$\psi _{y}=-\frac{dw_{0}}{dx}$$

$$\varepsilon _{xx}=-y\frac{d^{2}v_{0}}{dx^{2}}-z\frac{d^{2}w_{0}}{dx^{2}}$$

The bending moments will be

$$M_{y}=-EI_{yz}\frac{d^{2}v_{0}}{dx^{2}}-EI_{y}\frac{d^{2}w_{0}}{dx^{2}}$$

Also

$$q=-\int_{A}^{}{\frac{d\sigma _{xx}}{dx}dA}$$

Where

$$\frac{d\sigma _{xx}}{dx}=\begin{bmatrix} x &y \end{bmatrix}I^{-1}\begin{Bmatrix} \frac{dM_{y}}{dx}\\\frac{dM_{z}}{dx}

\end{Bmatrix}$$

and

$$V_{y}=\frac{dM_{y}}{dx}$$

$$V_{z}=\frac{dM_{z}}{dx}$$

Also

$$Q_{y}=\int_{A}^{}{zdA}$$

$$Q_{z}=\int_{A}^{}{ydA}$$

title: User:Eas4200c.f08.blue.a/Lecture 40


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President of the United States/Worksheets/Worksheet 3

Return to Vice Presidential Succession.

Succeeding the President
In this exercise, we focus our attention on the Presidential Terms of succession, in which the Vice President succeeded due to the death or resignation of the President. When successions occur, the Presidential terms are effectively split between two Presidents, however the next election always occurs on schedule, regardless of the succeeding President's time in office.

A total of 9 Presidents left office prematurely. Not a particularly long list to remember, but it becomes doubly difficult when we try to recall their successors, not to mention the year in which they died or resigned. It is therefore helpful to break the list down a little further into three categories: Assassinations, Natural Causes, and Resignation.

Assassinations
A total of four Presidents were assassinated, all by gunshot. Using the timeline below, fill in the blanks with the answers to the following questions:
 * 1) Who was the first President to be assassinated while in office?
 * 2) What year did Andrew Johnson take office?
 * 3) Who were the two Presidents to be sworn in in 1881?
 * 4) What year was William McKinley, the 25th President, assassinated?
 * 5) Who succeeded William McKinley as President?
 * 6) What years did the 26th President serve in office?
 * 7) Who was the most recent President to be assassinated while in office?
 * 8) What year was the 35th President assassinated?
 * 9) Who took office as the 36th President?

Natural Causes
A total of four Presidents died of natural causes. Using the timeline below, fill in the blanks with the answers to the following questions:
 * 1) Who was the first President to die while in office?
 * 2) What year did he die?
 * 3) Who was the first Vice President to succeed to the Presidency?
 * 4) What year did Zachary Taylor, the 12th President, die while in office?
 * 5) Who became the 13th President?
 * 6) Which President died in 1923?
 * 7) Which Vice President became the 30th President?
 * 8) Which years was the 30th President in office?
 * 9) How many times was Franklin D. Roosevelt voted into office?
 * 10) Which years was FDR in office?
 * 11) Which Vice President succeeded FDR?

Resignation
Only one President ever resigned from office. Using the timeline below, fill in the blanks with the answers to the following questions:
 * 1) Who was the only President to resign from office?
 * 2) What year did he resign?
 * 3) Who was his running mate in the previous election?
 * 4) Who became the 38th President after he resign?
 * 5) Which years was the 38th President in office?


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User:Win moe/The regeneration army

The Regeneration Army T his is the new religion of the new generations.We are running to create new religion based on scientific facts and prominent points from Three Main Beliefs all over the world ( Buddha. Christian . Muslim).
 * To provide next generation with reliable and effective religion.
 * To prevent lost belief on recent religion.
 * To create better world without religious extremism.

Please contact, wmhtet1.14.90@gmail.com, if you interest in this article.

 * Developing A Universal Religion

title: User:Win moe/The regeneration army


text:
Beginner Japanese/Looking For Someone

Reading

 * to be added

Lesson

 * to be added

Practice

 * 1) You want to get somebody's attention. What do you say?
 * 2) Someone says to you, "あなたはぐみさんですか. " What is your answer?
 * 3) How do say "who are you"?
 * 4) How does he apologize (for mistaking you)?
 * 5) How does he say he is Mr. Tanaka?
 * 6) How do you react to somebody telling you his name?

title: Beginner Japanese/Looking For Someone


text:
User:Jtneill/Ideas

 * Video of "name" as a separate webpage - e.g., leone+hinton+video

title: User:Jtneill/Ideas


text: User:Dark Obsidian

title: User:Dark Obsidian


text:
User:JennyRosen

Welcome to my wikiversity page!

This page has been constructed as part of the course KOIIA 2 given by the University of Örebro during spring of 2009. During the course we have worked with texts connected to different themas concerning identity, multilingualism and communication. In my wiki page I have collected my reviews of and reflections concerning the different texts read and discussed during the seminars.

My own research has an ethnographic outlook and at the moment I am working with observations and videorecordings in classrooms teaching Swedish for immigrants. In my final text of the course, which at the moment has not yet been published in wiki, I analyse material from own of the classrooms I have studied in relations to central topics in the course.

Please feel welcome to comment and discuss my texts.

Jenny R

/More about me./

Subpages

 * /Studie av en klass som läste hebreiska visade att flera av studenterna i klassen hade valt att gå där just för att de skulle få delta i en social aktivitet på hebreiska två gånger i veckan./
 * /Ett pussel med många bitar/
 * /Minoritetsspråks status/
 * /Hjörne, Eva & Säljö, Roger (2008) Att platsa i en skola för alla. Elevhälsa och förhandling om normalitet i den svenska skolan./

title: User:JennyRosen


text:
User:JennyRosen/More about me.

Jenny Rosen is a Phd student in Education at the University of Örebro and Högkolan Dalarna in Sweden. She holds a MA degree in Political Science from University of Lund and has worked as a teacher of Swedish as Second Language at Högskolan Dalarna since 2006.

Main areas of interest are: multiculturalism, intersectionality, performativitiy, Conversation Analysis, mulitlingualism.

title: User:JennyRosen/More about me.


text:
User:Oliverst

Hi there fellow learner

My name's Oliver St John and I'm a PhD student at the department of education, Örebro university in Sweden. The current foci of my ethnographic fieldwork at an international school is bilingual education, second language identities and international mindedness. I will be posting thinking and texts about these issues on this page and look forward to some digital dialogue with those of you who share similar interests!

Looking forward to closer encounters!

Oliver

title: User:Oliverst


text:
User:Inhol24

sv:Användare:Inhol24

Ingela Holmström
Välkommen till min sida här på Wikiversity. Jag heter Ingela Holmström och är doktorand i pedagogik på HumUS-Akademien på Örebro universitet. Mitt avhandlingsprojekt handlar om kommunikation, identitet och teknologi, med ett särskilt intresse för skolelever som har cochlea implantat (CI). Tidigare har jag arbetat som gymnasielärare för döva och undervisat i ämnena svenska och svenskt teckenspråk.

Den här sidan har byggts upp som en resurs under en forskarutbildningskurs på Örebro universitet som heter Kommunikations- och identitetsfrågor på institutionella arenor II (KOIIA II). Våren 2011 kommer sidan att kontinuerligt uppdateras med texter som hör till del 1 av samma kurs (KOIIA I).

Under kursernas gång skriver jag texter utifrån kurslitteraturen som handlar om olika aspekter av till exempel identitet, etnicitet och intersektionalitet. Texterna från KOIIA II hittar du under rubriken "Tidigare texter jag skrivit i KOIIA II" nedan. Texterna har inspirerat till och varit utgångspunkt för det paper jag också avslutade KOIIA II med. Den texten har jag valt att skriva utifrån mitt intresse för identitetsfrågor. Jag har då fokuserat på döv- och hörselområdet utifrån detta identitetsperspektiv. Läs mer om detta nedan under "Ett pussel med många bitar - paper i KOIIA II".

Kursen KOIIA I våren 2011
KOIIA I har en egen sida här på Wikiversity. Du kommer till den genom att klicka här.

Under kursens gång kommer läsloggar att publiceras här. Klicka på länkarna för att komma till respektive logg.

Läsloggar för kurstillfälle 1, 25/1
/de los Reyes & Mulinari (2005)/

/European Journal of Women´s Studies (2006)/

/McCall (2005)/

/Staunæs (2003)/

Läsloggar för kurstillfälle 2, 14/2
/Jonsson (2007)/

/Davies (2003)/

/Fishman & Garcia (2010)/

Läsloggar för kurstillfälle 3, 18/3
/Davies (2003)/

/Wenger (1998)/

/Hornberger (2003)/

Läsloggar för kurstillfälle 4, 14/4
/Wenger (1998)/

/Linell (2009)/

Examination i KOIIA I
Eftersom jag just nu arbetar med skrivandet av en artikel kommer jag som examinationsuppgift i KOIIA I att arbeta med delar av denna artikel utifrån kursens teman och kurslitteraturen, troligen med fokus på identitet och kommunikation. Min text kommer att vara skriven på svenska och kommer att skickas till mina kurskamrater, kursledare och gäster senast den 9 maj. Texten kommer att vara del av ett pågående arbete och därför kommer den inte att publiceras här.

Mina kurskamrater i KOIIA I
Annaliina Gynne

Giulia Messina Dahlberg

Sören Högberg

Ett pussel med många bitar - paper i KOIIA II
Mitt paper i kursen KOIIA 2 handlar om en dövidentitet i förändring i och med cochlea implantat-operationernas inträde i Sverige. I texten finns länkar till de tidigare texter jag skrivit, vilka fördjupar sig i olika områden som omnämns. Jag har också använt mig av mina tidigare texter för att dra paralleller till den värld som jag kallar "dövvärlden".

Rubriken "Ett pussel med många bitar" syftar till att varje människas identitet är så komplex. Man kan egentligen inte tala om en identitet, även om vi gärna gör det. Den består av många pusselbitar som tillsammans utgör det som är just "jag".

Mitt paper hittar du genom att klicka på titeln nedan:

Ett pussel med många bitar

Papret är indelat i olika stycken med följande rubriker:

En dövidentitet i förändring

Audism - att jämföra med rasism?

CI-elevens identitet?

Skolgång för barn med dövhet, hörselskada och CI

Referenser

Kommentarer på mitt avslutande paper

Tidigare texter jag skrivit i KOIIA II
Här nedan ser du en lista över mina skrivna texter under kursens gång. I mitt paper finns också länkar till dessa texter. Om du vill kommentera någon av mina texter, kan du klicka på länken nedanför varje text, eller klicka på rubriken för att först läsa texten.

/Globaliseringens kulturer/

Kommentarer

Intersektionalitet och Etnicitet

Kommentarer

Kultur och identitet

Kommentarer

/Intertextualitet/

Kommentarer

Att platsa i en skola för alla

Kommentarer

Rasidentitet och rasism

Kommentarer

/Crip Theory/

Kommentarer

/Talk in two languages/

Kommentarer

/Handbok om Flerspråkighet/

Kommentarer

/Språk, literacy och makt/

Kommentarer

Mina kurskamrater i KOIIA II
Mina kurskamrater har också egna sidor här på Wikiversity som kan vara intressanta att besöka.

Karin Allard User:Karina

Sara Frödén User:Sara_F

Annaliina Gynne User:Liinanna

Marie Nordmark User:Nordmacca

Jenny Rosen User_talk:JennyRosen

Catarina Schmidt User:Catarina

Oliver St John User:Oliverst

Genom att klicka på den blå markeringen efter varje namn länkas du direkt vidare till deras egna sidor.

title: User:Inhol24


text: User talk:Dark Obsidian/Archive

title: User talk:Dark Obsidian/Archive


text:
User talk:Dark Obsidian/Borders

{| cellspacing=1 style="width: 100%; border: solid white 2px; background: black" |- | {| cellspacing=1 style="width: 100%; border: solid white 2px; background: White" |- |

title: User talk:Dark Obsidian/Borders


text:
User talk:Dark Obsidian

Hello
Where have you been? Ottava Rima (talk) 15:00, 29 July 2010 (UTC)

UK Law page
Hi there. I'm a law student in the UK, and I was thinking of contributing to wikiversity as I go through my course, partly for my own benefit, partly for the common good. It looks like you haven't been around for a few months at least. I'm going to Wikiversity:Be_bold with the UK law page. Do get in touch if you feel I'm wrecking the place! -- Doubi 19:16, 9 October 2010 (UTC)

title: User talk:Dark Obsidian


text:
User talk:JennyRosen

The texts published here are under progress and are part of the course KOIIA II at the University of Örebro 2008-2009. During the first part of the course a common platform was created. The course syllabus for KOIIA II can be found here. The texts published in this page are based on the literature of the course.

Members in KOIIA II are:

Karin Allard

Sara Frödén

Marie Nordmark

Ingela Holmström

Oliver St John

Catarina Schmidt User:Catarina

Annaliina Gynne

Sangeeta Bagga-Gupta

My final paper

In June I attended a conference on feminist pedagogy, Challenging education: Feminist and anti-oppressive strategies in teaching and learning, and the text presented and I used the core of my final paper for this course in my conference presentation. The subject of my paper is relations between gender and nation and how gender equality is defined as Swedish in its essence. As discussed in several of the texts for January 19, being on the forefront when it comes to gender equality is an essential part in the construction of Swedish identity. Such relations excludes women and men from other backgrounds from a discussion on gender equality and instead defining Other women as victims and Other men as oppressors. In my paper I discussed these processes both on a theoretical level as well as applying it to the area of education for adult immigrants in Sweden, using transcriptions from my field research in Sfi classrooms.

Since my aim is to develop the paper into an article, I have decided not to publish the text in wikiversity at this moment. The participants of the course have received my text my e-mail. I am looking forward for you comments on my text and you are welcome to publish your comments, questions or other reflections here. Comments on my final text

My texts
Here I have collected my reviews and reflections on the central texts of the course KOIIA 2. Please feel welcome to comment them.

Texts for December 10

Reflections on Rampton, Ben (1999)Styling the Other: Introduction. Journal of Sociolingusitics 3/4, p. 421-427

Reflections on Rushdie, Salman (1982)Imaginära hemländer, i Eriksson, Baaz & Thörn (eds) Globaliseringens kulturer.

Texts for January 19

Reflections on Peterson, Ebby & Ålund, Alexandra (2007) Etniciteter: Ras, kön, klass, identitet och kultur

Reflections on de los Reyes Paulina (2007) Intersektionella perspektiv på etniska relationer

Reflections on de los Reyes, Paulina, Molina, Irene & Mulinari, Diana (2006/2003) Maktens (o)lika förklädnader. Kön, klass & etnicitet i det postkoloniala Sverige

Reflektioner kring Diana Mulinaris föreläsning

Texts for February 4

Bhabha, Homi (1994)The Location of Culture

Riley, Philip (2007) Language, Culture and Identity

Wikkan, Unni (2002) Generous betryal. Politics of Culture in the New Europe.

Texts for March 11

Feuer, Avital (2008) Who does this language belong to? Personal narratives of language claim and identity

Feinburg, Walter (1998) Common schools uncummon identities. national unity and cultural difference.

Tannen, Deborah (2007) Talking voices. Repetition, Dialogue, and Imagery in Conversational Discourse. 2nd ed.

Texts for April 16

Hjörne, Eva & Säljö, Roger (2008) Att platsa i en skola för alla. Elevhälsa och förhandling om normalitet i den svenska skolan.

McRuer, Robert (2006) Chrip Theory. Cultural Signs och Querness and Disability.

Tatum, Beverly Daniel (1997) Whya are all the black kids sitting together in the cafeteria? And Other Conversations About Race.

Texts for June 9

Auer, Peter & Wei Li (2007) Handbook of Multilingualism and Multilingual Communication.

Gafarnga, Joseph (2007) Talk in two languaes.

McCarty, Teresa L (2005) Language Literacy and power in Schooling.

Non-English pages moved to your userspace
Hi. I moved non-english pages to your userspace. You may copy them to the proper (Swedish) Wikiversity. - Sidelight12 Talk 08:52, 30 December 2013 (UTC)

title: User talk:JennyRosen


text:
User talk:Oliverst

In this first entry of 'my talk', I will describe the course which is the immediate context of my page and formulate some reflections on a text which we read for the first course session.

The initial context of the ideas and discussion I hope to deliver through this page is a postgraduate course, situated at Örebro university and using wiki as a main medium, called 'Communication and Identity Issues in Institutional Arenas'. The main aim of the course is to explore and generate understanding of the concept of intersectionality as well as various perspectives on identity, multilingualism and culture. The link to the course plan will give you further information and the literature list.

The first text I will share a few reflections on is 'Styling the Other:Introduction' by Ben Rampton which can be accessed online from the 'Journal of Sociolinguistics 3/4, 1999: 421-427.

The collection of articles that this text introduces is inspired, among other sociolinguistic themes, by Rampton's concept of crossing which is defined as "speakers' use of apparently outgroup linguistic styles" (421). Rampton spotlights the common theme these articles explore by describing the studies as focusing on "a range of ways in which people use language and dialect in discursive practice to appropriate, explore, reproduce or challenge influential images and stereotypes of groups that they don't themselves...belong to." This theme is further described as a departure from the 'linguistics of community' (a conventional sociolinguistics view) to embrace a 'linguistics of contact'. In my words (always a challenge), the concept of a 'linguistics of contact' refers to the increasingly common practice of borrowing and customizing language which is different from habitual speech patterns and with 'other' ideological value for promoting group identity and forging new significance "in an already saturated semiotic marketplace."

Terms and phrases I will discuss in the following paragraphs include: Bakhtin's concept of 'doube-voiced discourse'...... (Text under construction)

title: User talk:Oliverst


text:
User:Dark Obsidian/signatures

DarkObsidian

title: User:Dark Obsidian/signatures


text:
User:JennyRosen/Reflections on Rampton, Ben (1999)Styling the Other: Introduction. Journal of Sociolingusitics 3/4, p. 421-427

Ben Rampton has developed the concept of crossing in relation to the term code switching. While code switching is mainly used to describe the practice of switching between to languages or varieties (codes), crossing refers to speakers not only switching between to codes but also combining two or more languages or varieties in order to create a new one. Moreover, in crossing speakers use languages belonging to speech communities which they don’t consider themselves members of. Traditionally code switching has been seen as practice done by a speaker in good command of the two codes that he or she switching between. However, crossing blurs the direct relation between language use and belonging to a language community.

Ramton's article should be read as an introduction to a new journal, opening up for a new view on language, language practices, language community and identity in sociolinguistics. This opens up for a more complex understanding of the ties between language user, identity and speech community. Such an understanding focus less on the structures which limit and controls the speech and interact ional behaviour of an individual and more on the active agency of individuals.

While in earlier social linguistics, researcher has mainly been interested in describing language practices within a particular group or community in a specific cultural space, Rampton wants to highlight the importance of looking into sociolinguistic processes moving across on context to another (1999:423).


text:
User:Nordmacca

Marie Nordmark är doktorand i pedagogik vid Örebro universitet []. Hon är antagen till den nationella forskarskolan Utbildningsvetenskap med inriktning mot didaktik . Marie skriver sitt avhandlingsarbete inom forskningsprojektet LISA-21 (Languages Identities in School Arenas in the beginning of the 21st Centuary).

I kursen Kommunikations- och identitetsfrågor på institutionella arenor 2, skriver kursdeltagarna läsloggar till varje seminarium. Läsloggarna ska inte läsas som färdiga texter. Läsloggarna på denna sida har skrivits utifrån kurslitteratur för att sammanfatta tankar och lyfta fram användbara begrepp till avhandlingsarbetet. Det är många texter skrivna till varje seminarietillfälle. På denna sida är läsloggarna inlagda i den kontext de blev skrivna och därför redovisade under respektive seminaretillfälle. Man kan strukturera på flera sätt. En poäng med redovisningen nedan är att även läsa texterna som en del i en process under en kurs. Den organisering som Nordmark har valt lyfter fram att när texterna till exempelvis Seminarium 1 skrevs hade författaren inte läst eller skrivit texterna till Seminarium 2, osv.

Seminarium 1, 2008-12-10

Kommentarer till läsloggar för Seminarium 1

Seminarium 2, 2009-01-19

Kommentarer till läsloggar för Seminarium 2

Seminarium 3, 2009-02-04

Kommentarer till läsloggar för Seminarium 3

Seminarium 4, 2009-03-11

Kommentarer till läsloggar för Seminarium 4

Seminarium 5, 2009-04-16

Kommentarer till läsloggar för Seminarium 5

Seminarium 6, 2009-06-09

Kommentarer till läsloggar för Seminarium 6

Kurspaper

Kommentarer till kurspaper

title: User:Nordmacca


text:
User:Inhol24/Globaliseringens kulturer

Av Ingela Holmström

Globaliseringens kulturer
Boken Globaliseringens kulturer (Eriksson, Eriksson-Baaz och Thörn (red), 2002) består av texter, skrivna av olika personer. En av dessa, "Imaginära hemländer" är skriven av Salman Rushdie och det var den text som gjorde starkast intryck på mig, förmodligen av den enkla anledningen att jag kunde se många paralleller till mig själv i texten. Rushdies text handlar om hur man som utflyttad från sitt ursprungsland, som i hans fall är Indien, på sätt och vis skapar fiktiva hemländer när man befinner sig i ett annat land och skriver sina texter där. Han menar att man då annvänder sig av minnen från t.ex. barndomen och utifrån dessa skapar man sig bilder av hur det är i landet. Men det man skriver bygger på fragment, visserligen kan man utifrån minnesfragment skapa sig goda uppfattningar om hur det kan se ut och kan vara, men samtidigt fyller man ut de bitar som saknas och därmed blir hemlandet snarare fiktivt än verkligt.

Rushide skriver också att han, och andra utflyttade indier, nu delvis tillhör västvärlden och att detta innebär att han ibland kan känna att han står med ett ben i vardera kulturen, men att det också ibland kan kännas som att han istället hamnar "mellan två stolar". Just detta fortsatte jag att fundera på. Idag, när rörligheten är så stor i världen, så måste det vara mycket vanligt att man upplever sig tillhöra flera kulturer och att det samtidigt kan kännas som att man kanske inte hör hemma i någon kultur alls. Hur är det för de människor som flyr från sina hemländer och först hamnar i Italien, sedan i Tyskland och slutligen här i Sverige? De kanske bor flera år i varje land och hittar sin plats där, innan de fortsätter vidare, mer eller mindre frivilligt. Hur många kulturer upplever de sig till slut att höra hemma i - eller känner de sig som om de helt står utanför samhällenas kulturer? Skapar de sig sin egen lilla kultur inom familjen, eller inom en grupp med liknande bakgrund som de själva? Och hur identifierar de sig då?

Men det handlar inte bara om människor som flyttar mellan olika länder, utan även människor som hela tiden stannar i Sverige kan uppleva sig tillhöra olika kulturer. Det s.k. "dövsamhället" är ett exempel på en grupp människor som delvis tillhör det hörande, svenska samhället, men som inte kan ta till sig den svenska kulturen fullt ut, eftersom de inte hör, och som inom sin egen grupp har en annan kultur. Precis det som Rushdie säger, stämmer så väl överens med mina egna erfarenheter - det att man ibland står med ett ben i vardera kulturen men att man ibland faller emellan dem.

Något att dra lärdom av i Rushdies text anser jag vara att han varnar för att man ska "lägga sig till med en ghettomentalitet" (s. 252). Med detta menar han att vi inte får glömma att "det finns en värld utanför den grupp vi själva tillhör" (s. 252). Detta anser jag vara något som precis alla ska fundera på. Det handlar inte bara om invandrare här i Sverige, som ibland anklagas för att inte försöka bli en del av det svenska samhället och vår svenska kultur, eller om döva personer som på samma sätt ständigt påminnns om hur viktigt det är att ta del av det hörande samhället. Det handlar också om de mest "vanliga svenskarna" som även i sin tur måste våga gå över sina egna gränser för att titta på de andra kulutrer som finns både inom och utom Sverige.

Kommentarer
Här kan du skriva in de kommentarer eller tankar du har kring min text ovan.

title: User:Inhol24/Globaliseringens kulturer


text:
Template:One Box Section E

This is a template for creating a one box section with editable items.

(For more complex boxes see Template:Two Box Section and Template:Three Box Section)

Variables
All these variables are optional and can be left blank.

image - use normal image syntax to add a logo for project. Preferable to use image around 64 x 64 px in size.

title - of the section.

items page name - the page to be inserted into the box.

subtitle - of the section. Can include any normal wiki syntax.

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Wikiversity:Respect pseudonyms

Wikimedia contributors have the option to remain anonymous, by choosing a pseudonym as their user name. This choice needs to be respected by other Wikimedia participants.

When addressing or referring to Wikimedia contributors on Wikiversity, always use their pseudonym unless they have explicitly given permission to refer to them by their real name. Wikiversity participants may declare their preference on Wikiversity or on another Wikimedia Foundation website. Wikiversity participants may address or refer to people of interest by their real name in learning projects – such as a biography style learning project – but may not connect that name to a Wikimedia pseudonym. Conversely, when discussing a Wikimedia editor as part of a learning project that studies Wikimedia itself, they should always be referred to by their pseudonym rather than their real-life identity, even if this connection has been made elsewhere (such as on an external website).

In cases where making the connection between a real identity and a pseudonym is absolutely necessary for educational purposes, Wikiversity contributors can ask for permission on the contributor's home project talk page. In cases where permission is not received, but the connection is felt to be important enough to ask for an exception to this policy, participants may open a discussion on Community Review describing the need (but not making the connection between pseudonym and and real identity in the process of doing so).

Contributions which violate the spirit or intent of this policy may be reverted, deleted or oversighted. Wikiversity contributors who continue to violate the spirit or intent of this policy after being warned may be blocked to prevent further violations.

title: Wikiversity:Respect pseudonyms