Question #1A) What is scarcity and why is it important in economics?B) How does scarcity influence the decisions we make?
Question #2A) What is rational self-interest?B) Provide some examples of decisions individuals make in order to maximize their self-interest.
Question #3A) What are opportunity costs and how can they be used to make good choices?B) Pretend that you are a good bass player and the Rolling Stones ask you to leave school, work, etc. and join them on tour for the next four months. What will the opportunity costs be of joining the Rolling Stones on tour?C) What will the opportunity costs be of not joining them on tour?
Question #4Country A can produce 2 televisions per hour of labor or 6 tables per hour. Country B can produce 1 television per hour of labor or 4 tables per hour.A) Which country has an absolute advantage with televisions? With tables? Explain your answer.B) Which country has an comparative advantage with televisions? With tables? Explain your answer.C) Which country should produce televisions? Which country should produce tables? Explain your answer.
Question #5A) What is the Production Possibilities Curve and how does it work?Explain why each of the following would cause the Production Possibilities Curve for a country to move outward or inward:B) The average work week increases.C) There is an increase in the retirement age.D) Immigration decreases.E) There are decreases in smoking, alcohol, and drug abuse.Do not repeat the questions with your answers. Any sources used must be cited according to APA standards.
What is scarcity and why is it important in economics
Thomas Friedman and His MIT Speech: A Retrospective and an Analysis Essay
Introduction: Thomas Freedman and the MIT Milestone Celebration There is no need to introduce either Thomas Friedman, or his concept of the flat world – both seem to have gained the world recognition since recently. While the book is extremely entertaining, with a plethora of innovative ideas, each being a potential means to reinvent people’s perception of the world, it cannot match the public performance of the master of economics himself. The Organization of the Speech: An Unusual Way to Present an Idea Actually, it would be weird to expect that one of the best Times columnists would deliver his speech in a traditional boring and predictable way. Friedman throws in some jokes: “I know some of you’ve read the book, some of you haven’t – I know who you are” (Friedman 3:01), thus, creating a comfortable atmosphere, in which the complex issues of the flat world can be discussed. The given approach, however, begs the question whether the audience will be able to take the ideas conveyed by the lecturer seriously. Conclusion and What Followed It: An Unexpected Twist Ending Concluding his speech with the discussion of the current problems of the humankind evolution and the need for “being smart about the innovative things we have” (Friedman 38:13), Friedman gives his audience a lot of food for thoughts.. It would be unreasonable to assume that consumerist tendencies are necessarily bad. Instead, it will be more reasonable to introduce people to other options that are tied in with the concept of consumerism, such as creating more comfortable setting for everyday life. Delivery of the Speech: When the Style Matches the Substance Surprisingly enough, Friedman never resorted to any of the traditional antics of public speakers in his MIT speech; instead, he calmly got his point across. In many ways, this was the right thing to do, because the audience wanted him to talk honestly. Seeing how Friedman’s book featured a very honest and open approach towards the readers, the audience in the lecture hall had the rights to expect the same from the author. Analyzing the Scenarios: Freedman’s Experience One of the doubtless advantages of Friedman’s speech concerns numerous examples, which the author offers for the audience to consider, therefore, making his arguments all the more impressive. Of all the stories that Friedman shares with his audience in the MIT speech, three key examples of how flat the world can get are worth specifying and analyzing. Netscape: flattening the world to the bursting point Netscape, with its open transmission protocols, gave “two basic flatteners that changed the world” (Friedman 13:18), which were a browser and the dot-com bubble. However, it seems that Friedman still overrates the significance of Netscape. While it should be credited as the browser that allowed for the creation of Mozilla Firefox, one of the most widely used browsers, the credits for creating the first browser ever should be given to Tim Bernes-Lee and his WorldWideWeb, as known as Nexus. Therefore, Friedman raises an interesting dilemma of choosing between the invention that technically was the first discovery, and the invention that spawned further technological evolution. Get your 100% original paper on any topic done in as little as 3 hours Learn More Southwest Airlines calligraphy classes: the art of convincing With his incredible skill of telling a story, Friedman managed to turn his experience of booking a ticket at Southwest Airlines into a lesson in the flatness of the world. Emphasizing the fact that he had to change his manner of communicating with the Southwest Airlines “from vertical to horizontal” (Friedman 31:47), Friedman explained that the introduction of online facilities, such as ticket booking, had, once again, simplified the process from having the employees to fill out the ticket information to having “calligraphy classes” by making the customers fill out the forms and interacting with people representing companies. Friedman’s remark regarding the given innovation as a step forward is, actually, rather questionable. On the one hand, the idea of interacting with the company’s representatives directly gives one a pleasant feeling of being treated like an individual. On the other hand, the process going through the routine of talking to the company’s agents whenever buying or booking something quickly wears off its novelty and becomes unnecessarily tedious. Green Revolution as a necessary step in the world progress Friedman makes it evident that people, in fact, need Green Revolution as one of the key steps on the way to further progress. However, what the humankind has now is a “Green Party” – a revolution in which “no one gets hurt” (Friedman 42:06). To make the Green Revolution work, one must take more drastic measures, Friedman stresses. It is peculiar that Friedman compares the unsuccessful Green Revolution to the IT Revolution, which was “real,” as Friedman explains, because it had a tangible and not necessarily good effect on people’s lives. Yet Green Revolution seems to have failed for different reasons than the ones mentioned by Friedman. Unless its organizers had thrown a recycled, completely worn out principle of “saving the planet” into it as the motto, coming up with a more original idea instead, the idea of the Green Revolution might have caught on with people. Conclusion: A Speech Worth Being Remembered Definitely one of the most memorable performances ever given in MIT, Friedman’s speech has shed some light on the processes that are currently taking place on many levels, including economical, social and sociopolitical ones. While some of the ideas that Friedman conveyed during his performance are very arguable, there is one thing that he is perfectly right about: the world is changing fast, and people have to keep in pace with the recent tendencies. A speech to remember, the MIT performance allows evaluating the scale of “flatness” of the present-day world. We will write a custom Essay on Thomas Friedman and His MIT Speech: A Retrospective and an Analysis specifically for you! Get your first paper with 15% OFF Learn More Works Cited Friedman, Thomas. “MIT Milestone Celebration | Keynote Address.” YouTube. 11 Jan. 2013. Web. .
Behavioral Health Mobile Van
best essay writers Behavioral Health Mobile Van.
Proposed Product, facility, entity, or service (due at the end of Week 6)Describe, in detail, the proposed product, facility, entity or service. What would it do? For whom? Who would own it? Would there be implementation challenges? Please review the attachment first to understand the background, the introduction, and the environmental and organizational assessment. Be creative. Think of a name for the organization. Utilize references and research online about similar product – BH/SA mobile health van. The service area is Baltimore City (please be specific on an area/areas in baltimore city that might need the services the most). Clientele – Medicare, Medicaid, Medicare Advantage, Uninsured (please see about funding/grants that can be used). The one who would own will be a health system (select a health system that could own it (not Johns Hopkins) and how that would be set up and organized. the attachments goes over the services that will be rendered- please discuss in the paper but be more detailed. Also, cite good references.
Behavioral Health Mobile Van
Miami Dade College Recycling Matters Discussion
Miami Dade College Recycling Matters Discussion.
Respond to each of the following questions. You will need to write at least 2 paragraphs, one for each question.1. Some students interpret Heglar’s essay, “I Work in the Environmental Movement: I Don’t Care If You Recycle” as, “There’s no use in recycling (or changing light bulbs, or installing solar panels, or adopting a vegan diet). There’s not much the individual can do.” But is that Heglar’s point? What is the basic argument that Heglar makes in her article? Write a one-paragraph summary of at least 100 words that explains her argument. You need to read to the end of the article to really understand her main idea. It is not what the title implies. 2. Do you agree, disagree, or both agree and disagree with Heglar’s point? Write a one-paragraph argument of at least 100 words that explains your answer to this question.
Miami Dade College Recycling Matters Discussion
EE 453 Pennsylvania State University Simulink Audio Signal Processing Lab Report
EE 453 Pennsylvania State University Simulink Audio Signal Processing Lab Report.
Pageof 8ZOOMEE 453: Lab 1Introduction to Simulink: Audio Signal ProcessingSeptember 19, 2018OverviewThe purpose of this first lab is to familiarize the student with DSP developmentusing MATLAB Simulink. You will learn how to use the Simulink equivalents ofhardware measurement tools such as oscilloscopes and spectrum analyzers. Youwill then do some basic audio signal processing tasks, finishing by examiningsome common audio effects used in music.Each DSP workstation in the EE 453 lab is equipped with a computer withMATLAB Simulink installed, and headphones to be used so you don’t disturbother students.The software used in the EE 453 lab isSimulink, a component of MATLAB thatis a block diagram based development platform (similar to LabView). Simulinkallows for fast generation of DSP algorithms using an easy to learn drag-and-drop approach.11 System SetupBefore beginning the lab, you must make sure the system is setup as follows:•Connect your headphones to the Headphone jack on the front of the com-puter•Log on to the computer using your PSU access account.You must saveall files on your PSU W: drive. Please do not store any fileson the computer itself. It takes up hardrive space, and will bedeleted periodically. While not necessary to save the files, they will begood to have as a reference for the future labs this semester.•Download the.zipfile from Canvas containing files needed to completethe lab.2 Simulink Bench InstrumentsAs a first experiment, you will learn how to use Simulink’s spectrum analyzerand oscilloscope.1. Open up MATLAB and change the current directory to your PSU W:drive. Do this by selecting theBrowse for Foldericon located above theCURRENT FOLDER window. If you want, you may create an EE 453subdirectory on your W: drive by selecting theNew Folderbutton in theselection window.2. Typesimulinkin the MATLAB command window. You will want to opena new blank model. Once this window is open, notice the red, white andblue squares in the toolbar. This is how you access theSimulink LibraryBrowser.3. Enlarge this window so that it covers about half of your screen, but don’tcover up theSimulink Library Browserwindow. You will be dragging/-dropping blocks from various libraries into this model window to createyour various DSP algorithms. You are now ready to start building yourfirst model.24. The first thing is audio sources that will act as inputs to the model. IntheSimulink Libary BrowserselectDSP System toolbox→Sources→From Multimedia Fileand drag this into the model window5. After adding the block, you must set its parameters. This can be doneby double clicking on the block. Do this for theFrom Multimedia Fileblock, underFilenamebrowse until you find the audio file ”Track1.wav”downloaded from the canvas website. Accept the rest of the defaults.6. In order to play the audio file, you must add another block from the librarybrowser. The needed block isDSP System toolbox→Sinks→AudioDevice Writer. Again accept the defaults. Keep in mind the blocks mustbe connected together by clicking on the port on the block, and draggingto the next block. Test the system so far by clicking the green play buttonat the top of the Simulink file.7. We are now ready to actually analyze some signals. The first thing weare going to do is create some pure sinusoids in MATLAB. A template isgiven below:%%S c r i p t t o c r e a t e a s i n u s o i d%%I n p u t sFs = 8 0 0 0 ;%S a m p l i n g Ratef r e q = 8 0 0 ;%D e s i r e d t o n e ( Hz )f n = ’ 800Hz ’ ;%F i l e n a m eA = 0 . 1 ;%M a g n i t u d e o f s i n u s o i dT = 3 ;%L e n g t h o f s i g n a l ( s )%%S o u n d f i l et = 0 : 1 / Fs : T ;y = A∗cos( 2∗pi∗f r e q∗t ) ;a u d i o w r i t e ( s t r c a t ( f n , ’ . wav ’ ) , y , Fs ) ;Answer Q1 and Q2 on your worksheet8. Use the script above, or your own version, to create two discrete sinusoidswithωc= 0.2 andωc= 0.8. Use a sampling rate ofFs= 8000.9. In the Simulink window, we are going to place a Spectrum Analyzer inparallel with the Audio output. As the name would imply, a spectrum3analyzer allows the user to view the frequency content (spectrum) of asignal. The spectrum analyzer is found inDSP System toolbox→Sinks→Spectrum Analyzer. The spectrum analyzer can be connectedin parallel by connecting the output port to the middle of the line betweenthe audio input and outputs.10. View the two sinusoids through the spectrum analyzer (run the simulinkfile). Verify that the peaks of the signals are at the expected frequencies.This can be done by using the file menus of the spectrum analyzerTools→Measurements→Peak Finder.Call your TA over to verify that this program is working.YourTA will sign your lab worksheet.11. Without changing the two continuous frequencies, change the samplingrate in the sinusoid creation script toFs= 4000. Pass these modifiedsinusoids through the spectrum analyzer.Answer Q3 and Q4 on your worksheet12. You will now implement an echo effect, and analyze how feedback canchange the stability of a system. In order to view this phenomenon, wewill be using the oscilloscope.13. Remove the spectrum analyzer from the current simulink file (or create anew one, keeping the audio input and output (I/O).14. The oscilloscope can be found inDSP System toolbox→Sinks→Time Scope.15. Change the input audio signal toEchoSample.wav. This audio file issampled at the standard CD sampling rate of 44.1 kHz.16. In order to implement an echo sample, we are going to want to implementthe difference equationy[n] +Ay[n−δ] =x[n]. The difference equationrequires three blocks:•Summing Block:Simulink library→Math Operations→Sum•Gain Block:Simulink library→Math Operations→Gain•Delay Block:DSP System Toolbox→Signal Operations→Delay417. To implement the difference equation, the sum block must be placed be-tween the input and output I/O. The wire connecting the sum to theoutput must then be fed into the delay block, followed by the gain block,and back into the sum block. In may be helpful to rotate the blocks, inorder to have them point in the correct direction. This can be done viaRight click + Ctrl + R.18. Double-click on the delay block and set the following parameters. Therest can be left as default.•Delay Length: 4410019. Double click on the Gain block and set the parameters. The rest can beleft as default.•Gain: 0.720. Run simulink, and observe the output. Then modify the following param-eters:•Delay (samples): 10000•Gain: 1.1Answer Q5 and Q6 on your worksheetCall your TA over to verify that this program is working.Your TA willsign your lab worksheet.53 Audio Signal ProcessingThis audio signal processing portion will focus more on just using the noramlMATLAB functionality of scripts and functions.1. For this first part of the experiment, you will implement a chirp signalusing MATLAB.A sinusoidal waveform can be described asx(t) =sin(φ(t)). The instanta-neous frequency is taken to be the derivative of the phase,f(t) =12πdφ(t)dt.A linear chirp is whenf(t) =f0+kt.2. A chirp signal is easily identified using a graph called a spectrogram. Aspectrogram gives a plot of frequency on the y-axis, and time on the x-axis.3. The chirp you implement should be as follows:t = 0 : 1 / 1 e 3 : 2 . 7 ;y = c h i r p ( t , 0 , 1 , 2 5 0 ) ;s p e c t r o g r a m ( y , 2 5 6 , 2 5 0 , 2 5 6 , 1 e3 , ’ y a x i s ’ ) ;Answer Q7 on your worksheet4. In this part of the lab, you will create two sinusoids, and find what happenswhen the two sinusoids are added together. Create two sinusoids, and addthem together in the same script, so they have the exact same phase i.e.y1(t) =sin(ω1t)y2(t) =sin(ω2t)y(t) =y1(t) +y2(t)5. SetFs= 1080,f1= 510 andf2= 530.6. Listen to the output usingsoundsc(y,Fs)in MATLAB7. Now changeFs= 1040, and listen to the differenceAnswer Q8 and Q9 on your worksheetCall your TA over to verify that this program is working.YourTA will sign your lab worksheet.68. The final task for this lab will be analyzing the following wah, phaser, andflanger effects. Based on the following MATLAB code, which implementsthe effects, answer the questions on your worksheet.9. Here is a sample of the wah effect used in musicwahsample.wav. Thefollowing is the matlab code to implement this effect.l f of r e q = 1 ;l f om i n = 2 0 0 ;l f om a x = 2 0 0 0 ;l f o = s a w t o o t h ( 2∗p i∗l f of r e q∗( 1 : l e n g t h ( x ) ) / Fs , 0 . 5 ) ;l f o = 0 . 5∗( l f om a x−l f om i n )∗l f o +( l f om i n+l f om a x ) / 2 ;de pth = 2 ;y = z e r o s ( 1 , l e n g t h ( x ) ) ;f o r j =3: l e n g t h ( x )[ b , a ] = i i r p e a k ( 2∗l f o ( j ) / Fs , 2∗l f o ( j ) / Fs / de pt h ) ;y ( j ) = b ( 1 )∗x ( j )+b ( 2 )∗x ( j−1)+b ( 3 )∗x ( j−2) . . .−a ( 2 )∗y ( j−1)−a ( 3 )∗y ( j−2 ) ;end10. Here is a sample of the phaser effect used in musicphasesample.wav. Thefollowing is the matlab code to implement this effect (2 stage phaser).l f of r e q = 1 ;l f om i n = 2 0 0 ;l f om a x = 2 0 0 0 ;l f o = s a w t o o t h ( 2∗p i∗l f of r e q∗( 1 : l e n g t h ( x ) ) / Fs , 0 . 5 ) ;l f o = 0 . 5∗( l f om a x−l f om i n )∗l f o +( l f om i n+l f om a x ) / 2 ;y = z e r o s ( 1 , l e n g t h ( x ) ) ;f o r j =3: l e n g t h ( x ) ;[ b , a ] = i i r n o t c h ( 2∗l f o ( j ) / Fs , 2∗l f o ( j ) / Fs ) ;y ( j ) = b ( 1 )∗x ( j )+b ( 2 )∗x ( j−1)+b ( 3 )∗x ( j−2) . . .−a ( 2 )∗y ( j−1)−a ( 3 )∗y ( j−2 ) ;endx = y ;y = z e r o s ( 1 , l e n g t h ( x ) ) ;f o r j =3: l e n g t h ( x ) ;[ b , a ] = i i r n o t c h ( 6∗l f o ( j ) / Fs , 6∗l f o ( j ) / Fs ) ;y ( j ) = b ( 1 )∗x ( j )+b ( 2 )∗x ( j−1)+b ( 3 )∗x ( j−2) . . .−a ( 2 )∗y ( j−1)−a ( 3 )∗y ( j−2 ) ;end11. Here is a sample of the flanger effect used in musicflangesample.wavl f of r e q = 1 / 3 ;l f oa m p = 0 . 0 0 4 ;7l f o = 2+s a w t o o t h ( 2∗p i∗l f of r e q∗( 1 : l e n g t h ( x ) ) / Fs , 0 . 5 ) ;i n d e x = round ( ( 1 : l e n g t h ( x ))−Fs∗l f oa m p∗l f o ) ;i n d e x ( i n d e x<1) = 1 ;i n d e x ( i n d e x>l e n g t h ( x ) ) = l e n g t h ( x ) ;y=x ;f o r j =1: l e n g t h ( x )y ( j ) = y ( j )+x ( i n d e x ( j ) ) ;endAnswer Q10, Q11, and Q12 on your worksheet8
EE 453 Pennsylvania State University Simulink Audio Signal Processing Lab Report