Prescriptive Model of Design Process and Concept Selection Guide

Tutorial 6.0 Agenda: 1. Prescriptive Model of Design Process 2. Concept Selection 3. Fill out Page (Refined Problem Statement + Sketches + Decision Matrix) Prescriptive Model of Design Process Concept Selection Last week you developed a couple initial ideas to solve your client’s problem. This week, in addition to drawing at least one more idea, you will identify which of those is the most promising. What is a promising idea? An idea that:

● Addresses the client’s challenge in a thoughtful and empatheti c way ● Maximizes the objectives and does not go against the constraints you set out in Tutorial 4.0 ● Is possible to be built BY YOUR TEAM , BY THE END OF TERM We introduced 3 decision matrix techniques, as summarized below. NOTE: there are differences between how the textbook approaches these, and how we do. Please follow our instructions! Apply ONE of the following to your project: Numerical Evaluation Matrices The highest scored design is the Polyethylene bottle, with twist-off cap. This matrix shows constraints and objectives on the rightmost column. Each design alternative that does not meet one of the constraints is immediately removed as an option as signified by the “x”. All remaining design alternatives are evaluated (or estimated as best as possible) on each objective using metrics decided upon earlier. Every metric has been given a point system scale. The scores from each objective are added up and compared to give us the winner.

Priority Checkmark Method The highest scored design is Polyethylene bottle, with twist-off cap. This matrix shows constraints and objectives on the rightmost column. Each design alternative that does not meet one of the constraints is immediately removed as an option as signified by the “x”. Each objective is given a priority ranking from 1 - 3 check-marks signifying how important that objective is (Note: as you require 4 objectives for your charts, you will be giving 1-4 check marks) . For each of these objectives the design alternatives are assigned either a 1 or 0 based on whether they meet some arbitrary high value of the metric. (e.g. 70 points on a 0 - 100 point scale) If the design alternative meets the value it is deemed satisfactory and is awarded a score of 1. If it does not meet the value it is deemed unsatisfactory and is awarded a score of 0. The score (1 or 0) is then multiplied by the number of checkmarks allocated to that design. These check-marks are added up to give the final score for each design alternative.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

The Best-of-Class Chart Design Constraints (C) and Objectives (O) Glass Bottle, with Twist-Off Cap Aluminum Can, with Pull-Tab Polyethylene Bottle, with Twist-Off Cap Mylar Bag, with Straw C: No sharp edges * * C: Chemically inert O: Environmentally benign 1 2 O: Easy to distribute 2 1 O: Long shelf life 2 1 Total: 5 4 The highest scored design is Polyethylene bottle, with twist-off cap. This matrix shows constraints and objectives on the rightmost column. Each design alternative that does not meet one of the constraints is immediately removed as an option as signified by the “x”. The remaining design alternatives are ranked in order of how well they meet that objective. The rankings are added up and the design with the highest ranking is the winner. In this case, the Polyethylene bottle scored 5 points and is the highest design alternative. What if my results are not what I expected/desired? Concept selection techniques are thinking tools, not hard rules. If you get an unexpected result it could be for one of the following reasons: ● It can be difficult to predict how an unfinished device will meet constraints. ● Objectives should be thoughtful and meaningful to the client. Additionally, the objectives that appear in the decision matrix should be those of the highest priority. ● Do you have too many criteria? This can lead to indeterminate results. It may be necessary to go back and tailor your objective tree, or adjust your understanding of the problem as a team. Group Activity ● Review your work from Tutorial 4.0 such that the problem definition, objective tree and metrics are fresh in your mind ● Generate a valid 3rd design alternative, with clear annotations describing how it works ● Apply one of the decision matrix techniques to isolate the top two that will progress to low fidelity prototyping (very basic proof-of-concept) ● Submit this workbook before 11:59PM tonight

Fill Out Page Full names and MacIDs of Members: Full Name: MacID: Karn Bansal bansalk Gauri Arora arorag8 Dhruv Cheema cheemakd Insert Refined Problem Statement: The problem presented to ABC Design Solutions involves Elissa, a fourth-year The problem presented to ABC Design Solutions involves Elissa, a fourth year student at McMaster University. During the winter, Elissa is eager to shovel her driveway in th winter but because she suffers from primary generalized dystonia, she has difficulty in lifting and moving the snow. Ellisa is unable to lift heavy loads such as a shovel loaded with snow because of her condition. She experiences involuntary muscle contractions and this problem is amplified when she is lifting a heavy load. Her arms and hands shake and her muscles strain under pressure. Elissa has said that when she is pushing down instead of lifting, that these symptoms tend to disappear. Thus, the solution lies within a device utilizing a pushing-down movement to help lift heavy loads. However, the device itself must not be heavy that it requires significant effort to carry. The design must be lightweight and able to be assembled or properly implemented in less than 2 minutes to reduce the overall strain for Elissa. Optimally, the device could be used by other individuals with a similar condition who prefer pushing-down rather than lifting to reduce pain and strain on the muscles.student at McMaster University. During the winter, Elissa is eager to shovel her driveway in the winter but because she suffers from primary generalized dystonia, she has difficulty in lifting and moving the snow. Elissa is unable to lift heavy loads such as a shovel loaded with snow because of her condition. She experiences involuntary muscle contractions and this problem is amplified when she is lifting a heavy load. Her arms and hands shake and her muscles strain under pressure. Elissa has said that when she is pushing down instead of lifting, that these symptoms tend to disappear. Thus, the solution lies within a device utilizing a pushing-down movement to help lift heavy loads. However, the device itself must not be heavy that it requires significant effort to carry. The design must be lightweight and able to be assembled or properly implemented in less than 2 minutes to reduce the overall strain for Elissa. Optimally, the device could be used by other individuals with a similar condition who prefer pushing-down rather than lifting to reduce pain and strain on the muscles. Insert pictures and explanations of your two (2) design alternatives (sketches) from last week’s Tutorial 5:

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Insert a picture of at least one more alternative in addition to the two from last week (with clear labelling/annotations):

Insert your decision matrix below: ● Minimum of 3 alternatives ● Minimum of 4 objectives ● Minimum of 1 constraint ● Clearly identify the two highest scoring alternatives (in the above examples, a sentence was included below the matrix) Design Constraints (C) and objectives (O) Design Alternatives Design #1 (shovel attached to wheel device) Design #2 (shovel attached to ski device) Design #3 C: Weighs less than 15kg (30Lbs) but not too light x C: No hazardous materials (materials are impermeable for the winter season) C: $100 maximum cost x O: Easy to use 60 90 O: Safe to handle 100 100 O: Practical to make 80 70 O: Cost effectiveness 90 80 Total: 330 340 The highest scored design is Design #2 that utilizes a ski attached to the shovel.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Decision Matrix Rubric: Criteria 1 Does Not Meet Expectations 2 Marginal 3 Meets Expectations Constraints and Objectives Insufficient number of criteria (<5 total) Some constraints and objectives are improperly identified or a constraint is not present (all criteria are objectives) At least 4 objectives listed At least one constraint listed Correct terminology is used for objectives/constraints Communication of Decisions Nothing is provided in the table to indicate what decisions have been made Only one design alternative has been selected or it is unclear which designs have been selected It is clear what the final decisions are (circle, asterisk, a few sentences, etc.) Decision Matrix Table incomplete or fewer than 3 concepts evaluated Improper and/or unclear labels. (For example, labelling the concepts as "idea 1, 2,3" instead of "bottle with twist off cap, bag with straw" Table completed, all boxes filled in and final scores calculated Penalties Missing names/macIDs in Workbook Late submission Missing Refined Problem Statement Missing Design Alternatives from Tutorial 5 Missing 3rd Design Alternative 3rd Design Alternative unclear -1 Grade of 0 -1 -1 -2 -1 Final Grade

Design Review Conversations (Week 7 - back from Reading Week) To reiterate what was mentioned this Monday in lecture, the tutorial taking place Wednesday back from Reading Week will consist of design reviews and more importantly, valuable feedback. ● It is NOT a formal presentation, more so a conversation ● Each team should bring TWO low-fidelity prototypes as design alternatives to this tutorial ● They can be made out of cardboard, paper, or any other easily accessible materials ● The main point is to describe and convey the ideas you’ve been working on ● Your prototypes do not have to work as intended, and will not be evaluated for quality ● You will have to take notes on feedback provided during the Design Review ● They should be two VERY DIFFERENT ideas Research Assignment Part 2 (due Week 8) The purpose of the second Research Assignment is to build on the knowledge that you gained from the first Research Assignment by examining the resources available to you. This Research Assignment will guide Final Project teams to conduct research on items that could be used when building your prototype in the coming weeks. This acquired product information will expand the team’s (designers’) knowledge and help develop a feasible solution for the users and clients. The Research Assignment will be completed and graded individually , however the information gathered will be used in all future team meetings. This assignment is due in Week 8, at 11:59PM the night of October 30th. Instructions Each team member must visit a hardware, hobby or dollar store to research items that could be used to build your prototype. Each item that you include in your report must include a photograph (no website or stock images), the store it was acquired from, the cost of the part, a description of the item's intended use, and a description of how that item could be used in the prototype.

There should be a clear connection between each item and its use in the final project. Students must identify the function(s) and objective(s) that the item fulfills. Each team member must visit at least one store, where store locations cannot be repeated among members of a team. Each team member should research at least five (5) items. Each item that you include must be unique; items can fulfill the same function but must be separate means. Items do not need to be purchased by the student. Please organize all information into a chart. See below for an example from a previous year's project. Item Store Information Price Intended Use Function/Objective within Prototype Home Depot 350 Centennial Pkwy N Hamilton $3.79 Kitchen cupboard hinge - The hinge can be placed on the inside of the elbow joint and attached to the orthosis -Such placement will allow the orthosis to fulfill both functions of flexion and extension -Since the hinge is very small, it will also help to maintain the objective for the orthosis to be lightweight Please include your name and macID at the top of the assignment. Sample Research Store Locations Suggested stores accessible from campus via the bus can be found below. Please note that students do not necessarily have to visit these locations. Students may visit stores outside of Hamilton. Students can visit stores other than hardware, hobby and dollar stores as well. Home Hardware 101 Osler Dr, Dundas, ON L9H 4B6 Canadian Tire 50 Cootes Dr, Dundas, ON L9H 1B6 Dollarama 101 Osler Dr, Dundas, ON L9H 4H4 Dundas Valley Hobby 15 Cootes Dr, Dundas, ON L9H 1B1

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Research Assignment Part 2 Rubric 1 Does Not Meet Expectations 2 Marginal 3 Meets Expectations 4 Exceeds Expectations Content Note: this category has double the weight (ex. A level 4 = 8 marks) Missing item description Less than 5 items One or more means do not belong to its function At least 5 items Adequate explanation of items Does not mention important terminology and ideas At least 5 items Items cover a large breadth of functions and are thoroughly explained Correctly mentions important terminology and ideas Relevance No obvious relation between the item presented and the Final Project Makes few notions explaining how the item will prove useful in the Final Product Clearly discusses the relevance of the item in solving the team’s problem Writing Quality + Communication Poorly written Run-on sentences Repeats information Many errors in spelling, punctuation, capitalization, grammar, etc. Thoughts are organized Does not use university-level writing Many errors in spelling, punctuation, capitalization, grammar, etc. Ideas presented in a logical sequence Some errors in spelling, punctuation, capitalization, grammar, etc. Excellent flow of ideas Professional and organized thoughts No errors in spelling, punctuation, capitalization, grammar, etc. Penalties Repetition of stores within team Missing Student Name and/or macID Late Submission -1 -1 Grade of 0 Final Grade = Criteria Score (Penalty Score) TOTAL Score: /15

Reminders: 1. Tutorial 6.0 Workbook due @ 11:59PM tonight . 2. Create two low fidelity prototypes for Wednesday, October 23 rd . 3. Research Assignment Part 2 due @ 11:59PM Wednesday October 30th. Tutorial 6.0 Checklist: Please ensure that you have finished and submitted this workbook including the items below to Avenue to receive full marks for this tutorial. Tutorial Task Completed? Yes/No Refined Problem Statement Yes 2 Design Alternatives (Tutorial 5.0) Yes 3rd Design Alternative (Tutorial 6.0) Yes Decision Matrix Yes

Tutorial 6.0 Workbook Submission Instructions 1. Create a PDF from this file by clicking File and saving as file format ‘PDF (*.pdf) 2. Name the PDF document as your tutorial section number (T01: 8:30-11:20, T02: 11:30-2:20, T03: 2:30- 5:20) and each member’s macID a. So for example if there was a group of 4 students in tutorial section 2 then you would save the document as: ‘t02_okashm_ekongj_qichen_smiths.pdf’ 3. Only one team member must submit this workbook to the ‘GD6 Decision Matrix C0X/T0X’ Submission folder in Avenue to Learn where X is your section number 4. Navigate on Avenue to: Assessment > Assignments and upload your submission to the correct submission folder (there are three, for the three different tutorial sections, so submit to only the one that corresponds to your section) 5. Make sure that you receive a message on Avenue confirming that the submission has gone through Research Assignment 2 Submission Instructions - Submit as PDF under Assignments > “Research Assignment 2” - This is an Individual Submission. ➢ Naming convention: RA2(for Research Assignment 2) + Tutorial Section number (T01: 8:30-11:20, T02: 11:30-2:20, T03: 2:30-3:20) + MacID ■ Example: RA2_T02_malsn21

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

t02_bansalk_cheemakd_arorag8

Related Documents