<em id="rw4ev"></em>

      <tr id="rw4ev"></tr>

      <nav id="rw4ev"></nav>
      <strike id="rw4ev"><pre id="rw4ev"></pre></strike>
      合肥生活安徽新聞合肥交通合肥房產生活服務合肥教育合肥招聘合肥旅游文化藝術合肥美食合肥地圖合肥社保合肥醫院企業服務合肥法律

      代寫MMME1027、代做Matlab語言程序

      時間:2024-03-05  來源:合肥網hfw.cc  作者:hfw.cc 我要糾錯



      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 1 of 12

      COMPUTER PROGRAMMING WITH MATLAB
      COURSEWORK 1
      INTRODUCTION
      This coursework will help you revise the Matlab skills you gained in lectures **4. It is worth 15% of the
      module credits and will cover the following topics:
      • Variables and arrays
      • Solving equations
      • Array manipulation to solve engineering problems.
      Read the guidelines below as well as the mark sheet, so you know how marks will be awarded.
      Download the data files from the Moodle page, as these are needed to answer some of the questions.
      Follow all instructions carefully and consult the submission checklist before submitting your work.
      The submission deadline for this coursework is: 4pm Thursday 7th March.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 2 of 12
      GUIDELINES
      • All answers are to be submitted in a single Matlab script file (i.e., ‘.m’) – no other file type is
      acceptable. A template for this file is available on the course Moodle page, under the heading:
      Matlab - Coursework 1.
      • Put your name, student ID number and e-mail address at the start of the script preceded by the ‘%’
      character.
      • For questions which require you to write text answers (i.e., descriptive sentences), include these as
      comments using the '%' character at the beginning of the line.
      • Include comments in your script file describing what the program is doing and any features of note –
      you will get marks for this.
      • Once you have finished all the questions (or as many as you can manage), fill in the Submission
      Checklist. This is available on Moodle and is there to help ensure your work is submitted properly.
      • Save your script with a name in the following format: Firstname_Surname_studentid.m.
      For example:
      Julia_Smith_1334442**.m
      • Upload this file to Moodle in the appropriate submission box. Ensure that you upload before the
      submission deadline, as late submissions without exceptional circumstances will be penalised.
      • If you are in the process of applying for an EC for this coursework, be sure to submit whatever work
      you have with ‘_pending’ appended to the file name by the deadline.
      A WORD OF CAUTION – Remember this is individual work, not group work. Work handed in must be entirely
      your own and not copied from anyone else. Discuss the coursework with your friends if needed, but answer
      the questions yourself.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 3 of 12
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 4 of 12
      QUESTION 1 – VARIABLES [10 MARKS]
      Evaluate the following functions at w**9; = 1.5:

      Hint: Parts e and f can be solved without typing out the full equations.
      g) Predict the pressure drop in a pipe 100 cm long with a radius of 1 cm. Assume the fluid is water
      (µ = 1 × 10-3 Pa s) flowing at a rate of 100 cm3
      /s.
      You should use the Hagen–Poiseuille equation, which predicts pressure drop, ΔP, in laminar flow in
      cylindrical pipes:
      ∆𝑃 =
      8𝜇𝐿𝑄
      𝜋𝑅4
      where µ is the dynamic viscosity, L is the pipe length, Q is the volumetric flow rate and R is the pipe
      radius.
      Hint: You will need to carefully consider the units here. It may be helpful to convert all properties into SI
      units before calculating the pressure drop.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 5 of 12
      QUESTION 2 – ARRAYS & PLOTTING [13 MARKS]
      Write a script to generate an array called w**9; with 25 points between 0 and 2𝜋. Then evaluate the following
      functions over that range:
      a) 𝑎 = sin2 w**9;
      b) 𝑏 = cos2 w**9;
      c) 𝑐 = tan2 w**9;
      Add lines to the script to do the following:
      d) Plot graphs of 𝑎 and 𝑏 against w**9;.
      e) On the same axes, plot a + b against x.
      f) Make your graph clear and visually appealing by including axes labels, a legend, and by using
      different linestyles for each data set.
      g) Find the mean value of a. What change can you make to your code to improve the accuracy of this
      prediction compared to the theoretical value? Give your answer as a comment using the ‘%’
      character at the beginning of the line.
      h) Use the same methods as above to solve this problem concerning an AC electrical circuit. If the
      circuit operates with a peak current of 100 mA (see figure on the next page), what would be the
      average power dissipated by a 1 kΩ resistor?
      You can assume this is a simple circuit featuring only a resistor, with no capacitor or inductor. The
      average power, 𝑃**;, dissipated by the resistor is given by:
      𝑃**; = 𝐼w**3;𝑚w**4;
      2 𝑅
      where 𝐼w**3;𝑚w**4; is the square root of the mean squared current and 𝑅 is the resistance.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 6 of 12
      Hint: As shown in the figure, the current can be modelled as a simple sin function, with an
      amplitude of 100 mA, or 0.1 A. Start by creating this function, then calculate 𝐼w**3;𝑚w**4;, then find the
      average power using the equation given above.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 7 of 12
      QUESTION 3 – INBUILT FUNCTION EXAMPLES [10 MARKS]
      Give examples of the use of the following inbuilt Matlab functions and describe concisely what they do. Use
      the '%' character to include text comments in your .m file:
      a) clearvars
      b) who
      c) abs
      d) trapz
      e) roots
      Hint: Try using the help or doc command from the Matlab command line.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 8 of 12
      QUESTION 4 – PROCESSING 1D ARRAYS [12 MARKS]
      Whales are often beached near Lyme Regis on the south coast of the UK. Your company is developing an
      underwater acoustic system to keep whales off the beach. The system will work by using an underwater
      speaker to play a whale distress call.
      It is your job to prepare the digital file which the system will play. By working with a marine biologist you
      have obtained a recording of whale song. You can find this file in Coursework_1_data folder on Moodle.
      Write a script to:
      a) Load the whale song file into an array called 'song'. Plot a graph of the of the whale song featuring
      appropriate label axes.
      b) Make your script play the whale song sound. The required frequency is 44,100 samples per second.
      What happens if you play more or less than 44,100 samples per second? Write your answer in your
      script as a comment.
      c) How many distinctive whale calls are there in the data? You should also be able to tell this from
      looking at the graph. Write the answer as a comment in the script.
      d) The second whale call in the sample is the distress call. By looking at the numbers on the x-axis of
      your graph you will be able to tell at what position in the array this distress call starts and ends.
      Make a new array which only contains the distress call - this should be called 'distress'.
      e) Your company wants the device you are designing to play five whale distress sounds in a row. Make
      a new array containing five distress calls one after the other and edit your script to play this sound.
      f) If the computer plays 44,100 elements per second, make your script calculate the total length of
      your repeated distress call in seconds.
      g) Lastly, make an array representing the time over which the repeated distress call is played. Now plot
      the repeated distress call with an appropriate time axis in seconds. Label the axes appropriately.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 9 of 12
      QUESTION 5 – 2D ARRAYS [11 MARKS]
      You are an engineer working for a private spaceflight company. You have been given some ground radar
      data obtained from a drone aircraft and it is your task to identify a potential landing site for a small
      unmanned reusable rocket. Download file ground_radar.dat from Moodle.
      a) Load the topological data into an array and produce a 3D plot of the data using the surf function.
      Hint: Matlab joins the points in 2D graphs with black lines by default. If there are lots of data points
      this can make the graph look messy. Try adding the parameters,'edgecolor','none' to the plot
      command to fix this.
      b) The height data in the file is incorrect due to a miscalibration of the drone radar instrument. To
      correct this error, you need to subtract 300 m from each data point in the array. The array will then
      give the depth of each location below the drone’s mean altitude. Generate a new 2D array which
      contains the corrected data and plot this.
      c) Label the axes of your plot appropriately. The drone records data in a resolution of one data point
      per meter.
      d) Calculate the size of the area covered by the drone. Store the linear dimensions (i.e., the x and y
      lengths) in separate variables, then calculate the total area of your map in a third variable.
      e) From your 3D plot, locate a region which is relatively flat in which the rocket can land. Extract this
      region from the array to form a new array called ‘landing_site’. The landing site should have
      dimensions of at least 25 × 25 m, and be flat to within 1 m. To test the flatness, take the standard
      deviation over the potential landing site area. Finally, produce a 3D plot of the landing site, again
      labelling the axes properly.
      Hint: You may not be able to find a site of the right flatness just by looking at your 3D plot from part
      b. You may need to ‘sample’ potential landing sites by taking multiple sub-arrays from the ground
      radar data and checking if the flatness is below 1 m. This could be done manually or with a for loop
      and if statements.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 10 of 12
      QUESTION 6 – FOR LOOP IMAGE PROCESSING [11 MARKS]
      For this question you will use your programming skills to process an image, which, as you have learned, can
      be treated in Matlab the same as other types of array.
      An airline wants to rebrand its aircraft with a new exterior colour scheme. It has produced a mock-up of a
      red painted design. But before the launch of the new design, the airline CEO asks to see other colour
      concept designs. It is your job to make these. Start by downloading the image aeroplane.jpg from Moodle.
      a) Load the aeroplane image into Matlab and show it onscreen. For this, use the imread and imshow
      functions.
      b) Find the size of the aeroplane image. You will notice that it has three dimensions, not two. You can
      think of the image as having three separate layers, each of which is a 2D array. Each layer represents
      an 8-bit colour channel; red, green and blue with values 0-255. Together, these make the full colour
      image – like this:
      Every pixel therefore has three coordinates: (x, y, P) – where P is just the layer number 1, 2 or 3. The
      red channel is layer 1, the green channel is layer 2 and the blue channel is layer 3.
      To access these in Matlab, you would write something like:
      A = imread(‘aeroplane.jpg');
      A(25, 50, 3) = 0;
      which would set the pixel at (25, 50) in the blue channel (layer 3) to the value 0, or
      A(:, :, 1) = 255;
      which would set all of the red channel (layer 1) to the value 255.
      Try this out by setting a rectangular patch of the aeroplane image blue channel to the value 255, the
      highest value it can have. Show your result on screen.
      c) To turn the red pixels of your aeroplane image into other colours, one simple way is swap the colour
      channels. Start by making two nested for loops to scan over all the pixels in the image, and swap the
      layer 1 layer 2 layer 3
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 11 of 12
      values in the red and green channels. This should show you what a green painted design would look
      like. Show your result onscreen.
      d) Now make a mock-up of a blue painted design using the same method as above and show your
      result on screen.
      Hint: For parts (c) and (d) it may be helpful to make additional copies of the aeroplane image which
      you can scan over inside the nested for loops.
      e) What are the shortcomings of using this method to modify the colours in the image? Can you
      suggest a better way to colour modifications in images like this? Add comments to your script to
      answer these questions.
      Programming, Professional and Laboratory Skills - MMME1027
      Academic year 202**024
      Page 12 of 12
      PRESENTATION AND FORMATTING [20 MARKS]
      a) Code presentation is neat and clear, including:
      i. Separate sections for each question.
      ii. Meaningful, non-confusing variable names.
      iii. No superfluous code which is not needed for the program to run.
      iv. Semicolons to supress code output to screen.
      [12 marks]
      b) Comments are included to explain sections or lines of code which are non-intuitive, or where the
      user needs additional information to use the program properly.
      [6 marks]
      c) Name and email address is given at the top of the code (i.e., in the Matlab script).
      請加QQ:99515681  郵箱:99515681@qq.com   WX:codehelp 

      掃一掃在手機打開當前頁
    1. 上一篇:COMP639代做、代寫Python/Java編程
    2. 下一篇:代寫CSCE 240 – Programming
    3. 無相關信息
      合肥生活資訊

      合肥圖文信息
      挖掘機濾芯提升發動機性能
      挖掘機濾芯提升發動機性能
      戴納斯帝壁掛爐全國售后服務電話24小時官網400(全國服務熱線)
      戴納斯帝壁掛爐全國售后服務電話24小時官網
      菲斯曼壁掛爐全國統一400售后維修服務電話24小時服務熱線
      菲斯曼壁掛爐全國統一400售后維修服務電話2
      美的熱水器售后服務技術咨詢電話全國24小時客服熱線
      美的熱水器售后服務技術咨詢電話全國24小時
      海信羅馬假日洗衣機亮相AWE  復古美學與現代科技完美結合
      海信羅馬假日洗衣機亮相AWE 復古美學與現代
      合肥機場巴士4號線
      合肥機場巴士4號線
      合肥機場巴士3號線
      合肥機場巴士3號線
      合肥機場巴士2號線
      合肥機場巴士2號線
    4. 幣安app官網下載 短信驗證碼 丁香花影院

      關于我們 | 打賞支持 | 廣告服務 | 聯系我們 | 網站地圖 | 免責聲明 | 幫助中心 | 友情鏈接 |

      Copyright © 2024 hfw.cc Inc. All Rights Reserved. 合肥網 版權所有
      ICP備06013414號-3 公安備 42010502001045

      成人久久18免费网站入口