plot to see if the data is linear (i.e. if the relationship between y and x is linear). Next perform residual analysis and test for violation of assumptions. (Let y = arterial oxygen and x = blood flow). twoway (scatter y x) (lfit y x) regress y x rvpplot x 2. Since regression diagnostics failed‚ we transform our data. Ratio transformation was used to generate the dependent variable and reciprocal transformation was used to generate the independent variable. 3. Check if the model is
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The "spoils system"‚ a system for appointing government officials‚ was first used by Andrew Jackson. This system allowed newly-elected presidents to replace officeholders with people who supported them. For example‚ Jackson replaced some of his cabinet members‚ so his cabinet would be more in favor of the decisions he made before those policies went into effect. Most of his cabinet members resigned and were replaced‚ however‚ because the wife of Secretary of War John Eaton was judged for her moral
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How to Structure an I.B. Commentary (Oral or Written) I. Introduction A. Set the context 1. for a poem‚ some generalizations about the poet’s work and this poem’s relation to the poet’s work as a whole‚ as well as a summary of what happens in the poem 2. for a passage from a play or novel‚ a brief summary of the action leading up to the passage‚ as well as a summary of what occurs in the passage itself B. Identify the speaker/narrator 1. for a poem
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Do it wrong. Cartoonists‚ writers‚ musicians‚ actors‚ filmmakers‚ we all get the same questions. And we all have boring‚ stock answers like ‘draw every day’ or ‘practice a lot’. Sometimes it’s because we don’t know what we did right. But the real reason is that every bit of advice we give you has an expiration date. The world of art is always changing. The things people like‚ the way those things are distributed and sold is always changing. By the time you put in all that practice to get
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of contents Introduction Thesis statement Approach/methods Preliminary results and discussion Work plan including time table Implications of research List of references The structure is very similar to that of a thesis or a scientific paper. You will be able to use a large fraction of the material of the thesis proposal in your final thesis. Title page contains short‚ descriptive title of the proposed thesis project (should be fairly self-explanatory) and author‚ institution‚ department
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model. Major spreadsheet packages come with a built-in optimization tool called Solver. Now we demonstrate how to use Excel spreadsheet modeling and Solver to find the optimal solution of optimization problems. If the model has two variables‚ the graphical method can be used to solve the model. Very few real world problems involve only two variables. For problems with more than two variables‚ we need to use complex techniques and tedious calculations to find the optimal solution. The spreadsheet
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Matlab allows you to create symbolic math expressions. This is useful when you don’t want to immediately compute an answer‚ or when you have a math "formula" to work on but don’t know how to "process" it. Matlab allows symbolic operations several areas including: * Calculus * Linear Algebra * Algebraic and Differential Equations * Transforms (Fourier‚ Laplace‚ etc) The key function in Matlab to create a symbolic representation of data is: sym() or syms if you have multiple symbols
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This Memo describes the purpose behind the thank you letters and provides valuable tips on when and how to write and send thank you letters in the business environment. The Memo will concentrate on three major points: • The history of thank you notes • How to write an effective thank you letter • How to select the best channel to deliver a thank you letter THE HISTORY OF THANK YOU NOTES According to eHow website‚ the origin of thank you notes goes all the way back to ancient Egyptian and
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Linear Programming Tools and Approximation Algorithms for Combinatorial Optimization by David Alexander Griffith Pritchard A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Doctor of Philosophy in Combinatorics and Optimization Waterloo‚ Ontario‚ Canada‚ 2009 c David Alexander Griffith Pritchard 2009 I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis‚ including any required final revisions
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children’s riddle1 (and please do not read ahead until coming up with an answer): • How do you get an elephant into a refrigerator? The answer to the riddle‚ quite simply‚ is you open the fridge‚ put the elephant inside‚ and close the door. This solved‚ consider another riddle: • How do you get a giraffe into a refrigerator? Readers might be tempted to reuse the previous answer for this second riddle‚ but this turns out to be too simple. The correct answer is you open the fridge‚ take out the
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