Notes, abstracts, papers, exams and problems of Design and Engineering

Sort by
Subject
Level

Understanding Robot Kinematics: Parameters, Joints, and Links

Classified in Design and Engineering

Written at on English with a size of 259.71 KB.

Robot Kinematics

A+EfUlJFo1TKwAAAABJRU5ErkJggg==

Euler’s Rotation Theorem

Any rigid body motion that leaves one point fixed can be represented by a single rotation about an axis through the fixed point.

Chasles’ Theorem

Any rigid body motion is the translation of a designated point & a rotation of the whole body about that point.

Kinematic Parameters

These parameters are associated with the kinematic configuration of each link and joint of the robot arm. There are four main kinematic parameters:

Joint Parameters

The relative position and orientation of two successive links can be specified by two joint parameters:

  • Joint Angle (θk): The amount of rotation about zk-1 so that Xk-1 is parallel to Xk.
  • Joint Distance (dk): The amount of translation along the Zk-1 needed to make
... Continue reading "Understanding Robot Kinematics: Parameters, Joints, and Links" »
Karma: 19%
Visits: 0

Human-Computer Interaction: Sensory Actuators and Semiotics

Classified in Design and Engineering

Written at on English with a size of 18.75 KB.

Can also be including labels of actuators
•– Light
•– Sound
•– Vibrators
•– Solenoids
•– Servos
•– Heat/cool pads
& of Sensors
•– Heartbeat
•– Temperature
•– Skin conductance
•– Pressure and bend sensors
•– Accelerometer
•– Microphone
•– Light sensor
•– Distance
•– Gaze (eye-tracker)
•– Buttons
•– Faders


•Galvanic Skin Response (conductivity)
-offers fast response, but only changes have meaning
•Webcam
-- facial expressions directly convey emotional states, but for mobile applications it would be difficult to mount a camera…
•Speech
-- intonation, rhythm, lexical stress, and other features in speech can be used effectively, but universal affect interpretation difficult
... Continue reading "Human-Computer Interaction: Sensory Actuators and Semiotics" »
Karma: 8%
Visits: 0

Angular Data Binding and Lifecycle Hooks

Classified in Design and Engineering

Written at on English with a size of 6.1 KB.

Binding

One Way Binding

{{pageTitle}}

Two Way Binding
Property Binding
Attribute BindingOk
Class Binding
Selected
ngClass

{{customer.name}}
Style Binding
ngStyle

{{customer.name}}
Component Binding
Directive Binding
Customer
Event BindingSave
$event

Lifecycle Hooks

OnInitexport class Customer implements OnInit {
ngOnInit() {}
}
OnChangesexport class Customer implements OnChanges {
ngOnChanges() {}
}
AfterViewInitexport class Customer implements AfterViewInit {
ngAfterViewInit() {}
}
OnDestroyexport class Customer implements OnDestroy {
ngOnDestroy() {}
}

Pipes

Upper Case

{{customer.name | uppercase}}

Lower Case

{{customer.name | lowercase}}

Date

{{orderDate | date:'medium'}}

Date Format

{{orderDate | date:'yMMMd'}}

Currency

{{price | currency}}

Percent

{{taxes | percent:

... Continue reading "Angular Data Binding and Lifecycle Hooks" »

Karma: 8%
Visits: 0

Human performance

Classified in Design and Engineering

Written at on English with a size of 5.14 KB.

1.

What are main strength and Strain material parameters characterising    material performance during at Tensile loading?

-Young’s modulus

-Yield strength,

-Elongation

-Reduction in area

-Ultimate tensile strength

-Fracture strength

2.What equations describe the Strain hardening stage on true stress- true strain curve above yield strength And before reaching the necking?

-Holomon equation

-Ramberg-Osgood equation

3.What is Hall -Petch equation And what is the meaning of the main parameters in this equation?

-correlating the material Behaviour with yield strength

-Decreasing the grain size, increase the yield strength

-Increasing si (Stress acting against Dislocation movement), increase  the Yield strength.

4.What are main mechanical testes Applicable

... Continue reading "Human performance " »
Karma: 8%
Visits: 0

Content

Classified in Design and Engineering

Written at on English with a size of 4.75 KB.

QUIZ 4-EDITING

1.      1)  The principle that the meaning of a shot is determined not only by the material content of the shot, but also by its association with the preceding and succeeding shots is known as The Kuleshov effect.

2.       2) Graphic match is when two shots are juxtaposed in a way that emphasizes their visual similarities.

3.       3) The standard shot pattern that directors use to film conversations between two characters is shot/reverse shot.

4.       4 ) A scene edited in the Hollywood tradition begins with a(n) establishing shot .

5.       5) An abrupt shift in the time and space of an action that is not signaled by an appropriate shot transition is a jump cut.

6.      6)  A Master shot is a shot that

... Continue reading "Content" »
Karma: 8%
Visits: 0

Linear Programming Constraints and Variables: Definitions and Effects

Classified in Design and Engineering

Written at on English with a size of 2.44 KB.

Binding Constraint: LHS equals to RHS at optimal ;  Non-binding constraint: LHS is not equal to RHS at optimal

Shadow Price: Amount by which OFV changes if RHS is increased by one unit

Basic Variable: A decision variable which has non-zero value at optimal ;  Non-basic Value: A decision variable which has a value of zero at optimal

Reduced cost: Amount by which the objective function coefficient needs to be decreased before the variable becomes basic

  • Basic var: "Final Value" >0 and "Reduced cost"=0; With allow inc/dec, optimal solution (Final Value) doesn't change, OFV change by (change)*(Final Value); Beyond allow inc/dec, optimal solution and OFV changes by RESOLVE.
  • Non basic var:  "Final Value"=0 and "Reduced cost"≠0; In a MIN,"Reduced
... Continue reading "Linear Programming Constraints and Variables: Definitions and Effects" »
Karma: 8%
Visits: 0

Port Sizing and Operations: Key Factors and Considerations

Classified in Design and Engineering

Written at on English with a size of 1.81 KB.

Port Sizing: Key Factors

Physical Factors

1. Oceanographic and Meteorological Conditions

These conditions define navigational restrictions. Wind conditions are classified as:

  • Soft: Up to 36 kph
  • Moderate: 36 - 63 kph
  • Severe: 63 - 108 kph

2. Vessel Dimensions

Design vessel dimensions (LOA, breadth, freeboard, draft) are crucial for port design.

3. Vessel Maneuverability

  • High: Light war vessels, cruises, bulk carriers, Ro-Ro vessels, first-generation containerships
  • Medium: Modern war vessels, oil carriers (T-2), bulk carriers, second-generation containerships
  • Low: Aircraft carriers, VLCC tankers, third and fourth-generation containerships, older or damaged vessels

4. Vessel Squat

Two main effects:

  • Vertical movement (sinking)
  • Longitudinal rotation

5. Vessel Movements

Tide... Continue reading "Port Sizing and Operations: Key Factors and Considerations" »

Karma: 8%
Visits: 0

Comparison of Relational Algebra and Relational Calculus

Classified in Design and Engineering

Written at on English with a size of 1.36 KB.

Relational Algebra and Relational Calculus

Relational Algebra and Relational Calculus are the formal query languages for a relational model. Both form the base for the SQL language which is used in most of the relational DBMSs. Relational Algebra is a procedural language. On the other hand, Relational Calculus is a declarative language. Relational Algebra and Relational Calculus can be further differentiated on many aspects, which I have discussed below with the help of a comparison chart.

BASIS FOR COMPARISONRELATIONAL ALGEBRARELATIONAL CALCULUS
BasicRelational Algebra is a Procedural language.Relational Calculus is a Declarative language.
StatesRelational Algebra states how to obtain the result.Relational Calculus states what result we have to
... Continue reading "Comparison of Relational Algebra and Relational Calculus" »
Karma: 8%
Visits: 0

Essential Linux & Git Commands: A Quick Reference

Classified in Design and Engineering

Written at on English with a size of 5.77 KB.

Linux

Command

Description

Command

Description

cdChange the current working directory.lsList files and directories.
pwdPrint the current working directory.cpCopy files and directories.
echoDisplay a message.mvMove or rename files and directories.
historyDisplay a list of previously executed commands.rmRemove files.
exitTerminate the current shell session.mkdirCreate a new directory.
typeDisplay information about a command.rmdirRemove a directory.
bgPut a job in the background.catConcatenate and display files.
killSend a signal to a process to terminate it.touchCreate an empty file.
waitWait for a process to complete.chmodChange file permissions.
readRead a line of input from the user.chownChange file ownership.
printfFormat and print a message to the console.
... Continue reading "Essential Linux & Git Commands: A Quick Reference" »
Karma: 6%
Visits: 0

Internal leakage in

Classified in Design and Engineering

Written at on English with a size of 957 bytes.

a structure is called statically indetermined if there is at least one load for which the external and internal reactions can be comptuted from the psequilibrium equation but not uniquely.

PS. A satically determined structure obtained from the original one by removing. N constraints and introducing the corresponding force/moments as redundants (Xi, i=1,2,...N)

Flexibility coeff. Aij is the displacement in the line of Xi due to Xgorritoj=1

Stiffness coefficients aij unbalanced force/moment at the ith artificial constraint due to a unit displacement applied at the jth artificial constraint

Load constants ai0 unbalanced force/moment at the ith artificial constraint due to the action of the given loads a0

Karma: 6%
Visits: 0