What is Component: Definition and 567 Discussions

Component-based software engineering (CBSE), also called components-based development (CBD), is a branch of software engineering that emphasizes the separation of concerns with respect to the wide-ranging functionality available throughout a given software system. It is a reuse-based approach to defining, implementing and composing loosely coupled independent components into systems. This practice aims to bring about an equally wide-ranging degree of benefits in both the short-term and the long-term for the software itself and for organizations that sponsor such software.
Software engineering practitioners regard components as part of the starting platform for service-orientation. Components play this role, for example, in web services, and more recently, in service-oriented architectures (SOA), whereby a component is converted by the web service into a service and subsequently inherits further characteristics beyond that of an ordinary component.
Components can produce or consume events and can be used for event-driven architectures (EDA).

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  1. O

    Perpendicular component of momemtum?

    IVE TRIED EVERYTHING can someone please help me! i have 1 more try i keep getting it wrong i only can get the first one right pleasee help me!
  2. O

    What is the perpendicular component of the rate of change?

    A child of mass 22 kg swings at the end of an elastic cord. At the bottom of the swing, the child's velocity is horizontal, and the speed is 6 m/s. At this instant the cord is 3.70 m long. At this instant, what is the perpendicular component of the rate of change of the child's momentum...
  3. M

    Finding Resistance of an electronic component

    This may be a really dumb/easy question, but... I have a computer fan that I'm trying to repurpose. The specs on the fan say DC12V, 0.25A. I'm trying to model the fan in a circuit diagram because I want to 1) make sure i don't put too much current through it and 2) add a potentiometer to it...
  4. G

    Find the Component for 90-Degree Bevel Gear Rotation

    I am trying to find the name of a particular type of joint--I assume it has a name since it is pretty common I think. Imagine two shafts (A & B) joined at 90 degrees to one another with a bevel gear. With both shafts in a constant x-y plane, rotating shaft A will cause shaft B to rotate...
  5. T

    Horizontal component of the superhero’s displacement?

    1.A superhero flies 340 m from the top of a tall building at an angle of 22 ◦ below the horizontal. What is the horizontal component of the superhero’s displacement? Answer in units of m. What is the vertical component of the super- hero’s displacement? Answer in units of m. 2...
  6. S

    Normal component of the acceleration

    Homework Statement Given y^{2} = 8x^{3} + 8x where x and y are in metres, and y is positive What is the normal component of the acceleration When x = 4m, x = 7m/s, x = 2m/s^{2} Note : Wasn't sure if it was Calc or Physics, but I was leaning toward Calc, as it is basically Algebra...
  7. E

    The magnetic component of electromagnetism

    May a magnetic field exist w/o electricity? Yes, as lodestone shows us but where is the electricity? Electricity generates magnetism with it. So where is the electricity with lodestone?
  8. S

    Why is only the k component considered? (Details inside)

    Homework Statement This question is for statics - 3D rigid body equilibrium When taking moments about the x axis, why is only the k component considered? I have attached a picture of my situation Homework Equations Sum of Forces = 0 Sum of Moments = 0 {Its in equilibrium} The...
  9. P

    Principle component analysis

    hi guys, several things about PCA (principle component analysis) I hope someone can run over with me and correct me if I'm wrong. say I've done a PCA on correlation matrix and the eigenvlaues are: 2.37,1.18,0.58,0.28,0.28. 1) if I then do a reduced space plot using the first 2 pcs, is...
  10. J

    Do I have to break these problems up into component vectors?

    #8: A person walks 60.0 m east, then 80.0 m NW. #9: A person walks 15 m west, then walks 7.0 m @ 15 degrees South of West. #10: Two forces act on an object. A 45 N force pushing to the north, and a 70 N force pushing at 20 degrees to the east of north. #11: Some people go for a walk...
  11. B

    What kind of component should I insert here to convert 0-5V to 0-100V

    Hi, I'm trying to build what a biologist would call a "stimulus isolator". That is, I have a voltage follower connected to a system that I want to zap with 0-100V, so that the voltage follower doesn't see the voltage (much). I have an A/D board that can put out 0 to 5 Volts. I want this...
  12. B

    Real component of the wavelength of microwaves in copper

    I am trying to work out the real component of the wavelength of microwaves in copper. I am given n2=er=-i sigma/eo omega where n is the refactive index er is the relative permitivity eo is the permitivity of free space i = sqrt(-1) omega is the frequency of the microwave sigma is the...
  13. L

    Significance of delta in oxygen component of superconductors

    Various chemical formulae for the composition of superconductors quote the oxygen content, ie the number oxygen atoms present, as say Osub(10-delta). I would like to know the significance of delta.
  14. N

    DC Offset Component & Short Circuit Fault Current

    tell me something about DC offset component in reference toshort circuit fault current
  15. W

    Component vectors positive or negative and angles positive or negative

    Homework Statement A cruise ship leaving port, travels 50.0 km 45.0 degrees north of west and then 70.0 km 30 degrees north of east. Find a. The ship's displacement vector (the answer is Rx=25.3 km, Ry=70.4) b. The displacement vector's magnitude and direction...
  16. P

    Projectile Motion - Horizontal Component

    A rock is thrown off a 100.0m cliff upward at an angle of 20o to the horizontal. It has an initial velocity of 15ms-1 and strikes the rocks below. Find how far away the rock is from the base of the cliff. I calculated total time of flight (projectile parabola + 100m vertical descent)...
  17. M

    HDMI / Component Video Switches

    HDMI / Component Video "Switches" Hi guys, I just entered the HDTV realm and I'm having a little difficulty setting up my system. I don't have any place to put old extra TVs, so I have three (no, the girlfriend doesn't like it) TV's basically side by side. Are there splitter switch things so...
  18. S

    Weight Component: Find Force Components for Box on Inclined Surface

    Homework Statement Well I am trying to get help on weight compent. It is a box sliding on an inclined surface with angle 30 degrees. Homework Equations w= mg The Attempt at a Solution I am trying to find the components for weight force acting on the box. Book says w=mgcos(30) is...
  19. A

    Component Vectors: Finding Along Non-Perpendicular Lines/Axes

    How can we find component vectors along non-perpendicular lines/axis? Please illustrate with example.
  20. C

    Horizontal component of gravity on inclined plane

    I'm working on a problem in which a block sits on an inclined plane of angle @ above the horizontal. Assuming there is no friction, the block will slide down the plane with a force of mg*sin(@). The trouble I'm having is figuring out the horizontal and vertical components of that force...
  21. N

    How to deal with very active component?

    Hi there! I used a horizontal furnace under hydrogen (reductive gas) and nitrogen (protective gas) to reduce some kind of lanthanum nickel oxide. After reduction and air-cooling, I took the sample out of the furnace. The sample started to flame and been oxidized. There was no time to move the...
  22. B

    Calculating the Z Component of a Force: Solving for the Unknown Vector Component

    What are the components of the 200kN force along, the x, y and z directions? http://img7.imageshack.us/img7/1358/72180912.jpg So, I can find the x and y components, but I don't know how to find the z component, I have been researching on the internet, my textbook (Vector Mechanics for...
  23. R

    Explaining Connected Component: Real Numbers, Rationals, & More

    I'm not quite clear about this notion. Could anyone explain a little bit for me? Here is the definition: Let a be an arbitrary point in X . Then there exists a largest connected subset of X containing a, i.e. a set Ca such that: • a ∈ Ca and Ca is connected; • for any connected subset S of...
  24. S

    Four Wires and y component of magnetic field at center

    Homework Statement The four wires that lie at the corners of a square of side a=5.10cm are carrying equal currents i=2.40Amps into (+) or out of (-) the page, as shown in the picture. Calculate the y component of the magnetic field at the center of the square. Homework Equations B...
  25. J

    Tangential Acceleration vs. Tangential component of force

    Homework Statement A ball moves counterclockwise in a circle and is speeding up. The radius of the circle is 5 m. Its angular acceleration is α, (2.09 rad/s2)\hat{k} The ball's mass is 0.125 kg. What is the tangential component of the force on the particle? Homework Equations The Attempt at...
  26. P

    Transverse component of tension in a string

    Homework Statement A transverse sinusoidal wave is produced at one end of a long horizontal string by a bar that moves with an amplitude of 1.12 cm. The frequency of motion of bar is 120 Hz . The linear density (m) of string is 117 gm/m . The other end is attached to a mass of 4.68 kg that...
  27. J

    Finding the tangential component of acceleration

    EDIT: I meant radial in the title. Homework Statement A ball is going around in a circle of radius 4 m. It goes with a constant angular velocity of (13 rad/s)\hat{k} for 0.5 s. After that, it takes 4 s to come to a complete stop. Find the radial component of the ball's acceleration at 2 s...
  28. S

    Understanding the Strain Tensor Component: Physical Meaning of d'_{ijk}E_{k}

    There's this equation e_{ij} = \alpha_{ij}\DeltaT + d'_{ijk}E_{k} + Q'_{ijk}H_{k} + s_{ijkl} Sigma_{kl}, which is the strain tensor I'm asking about. All I want to know is what the component d'_{ijk}E_{k} is called and what its physical meaning is. Thanks in advance
  29. P

    Graphing a vector with component angles?

    At the end of a problem (I'm sure I did all the math correctly, that's not an issue) I'm supposed to graph the corresponding resultant vector. However, along with the magnitude of the vector, the angles given are in component form: θx, θy, θz. I've never encountered this before, and although it...
  30. jegues

    Magnitude and Component Question

    Homework Statement Determine the magnitude of the u and v-components of the 4kN force shown in the figure. Homework Equations The Attempt at a Solution I'm confused, am I suppose to assign u and v a magnitude and direction in order to obtain a resultant force of 4kN...
  31. B

    Finding component weight and angle measurements

    Now I know you can't outright give me the answer to this question but some useful tips would be appreciated as this is my first time taking physics. Thank you. A boulder of weight w rests on a hillside that rises at a constant angle x above the horizontal. Its weight is a force on the...
  32. B

    Horizontal component of projectile motion

    Unless there wind resistance do you always treat the horizontal velocity of a projectile as constant?
  33. R

    What is the black stuff on my LED bicycle light?

    Dear experts, :) I found a LED bicycle blinking light. The circuit is very small and it has a drop of, what i can only describe as, thick black dried 'ink' or glue or insulating material (as shown in the picture ) http://www.flickr.com/photos/46348930@N03/4257680841/ . I opened up another...
  34. N

    Where Can I Find the Decade CMOS 4017 Model for LT Spice Simulation?

    Hello, Anyone out there with the decade cmos 4017 model? Im using LT spice for some simulation but i can't find it in the standard library. Thanks in advance. Nash78
  35. T

    How do I know where each component of a reaction goes within a galvanic cell?

    Trying to teach myself electrochemistry out of a textbook and it's kind of confusing at some parts without any teacher to ask questions, but I think I'm doing a pretty good job. I've got a test tomorrow on this stuff and I'm kind of burned out from studying (about 20 hours in the past 4 days) so...
  36. Z

    What is the horizontal component of the force pushing him forward?

    Homework Statement An 80 kilogram skier slides on waxed skis along a horizontal surface of snow at constant veloctiy while pushing with his poles. what is the horizontal component of the force pushing him forward? [b]2. Homework Equations [/] is there an equation? The Attempt at a Solution...
  37. D

    What is the equation for finding the velocity vector of a component?

    Homework Statement http://img705.imageshack.us/img705/20/33060912.png Homework Equations http://img706.imageshack.us/img706/7514/67377660.png The Attempt at a Solution I don't understand how they find equation number (5). Can somebody help me with this?
  38. D

    What's the name of this mechanical component?

    I have this spring sort of thing it looks like this - What we can do with this is push it form the top, it compresses (the middle section which is not straight is a spring sort of stuff) and forces the air inside the arrangement out...sorta like a hand blower. When you release the...
  39. T

    Finding Component Form of Vectors: c, P, and Q

    the problem says: find and state the component form of the following vectors. c= 3i + 4j P(0,0),Q(5,-2) for some reason, i think i ended up doing unneccessary work. I found the Work of the problem instead, which is 7. Is work the same thing as component form? If not, what am I supposed to...
  40. W

    What is the function of a copper-coil electronic component?

    What is this(copper-coil one)?
  41. W

    What is the Symbol for the SJC27145A Remote Control Circuit?

    What is this ( silver colour one )
  42. W

    What is the Symbol for the Yellow Electronic Component?

    What is this ( the yellow colour one ) ?
  43. W

    2A302J is what electronic component ?

    2A302J is what electronic component ?
  44. L

    Calculating Component Vectors - Learn How

    Hello, I am slightly confused with component vectors. if I am trying to add two vectors, which are 33m/s [W33E] and 53m/s [N54W] i have to break them down into x and y component. i can get them by using cos and sin. but there are some occasions where I am not sure if the degree I am...
  45. D

    Vector addition analytical & component method

    hello everyone I am just new here i need help with my homework here's the problem A cross skier skis 7.40 km in the direction 45° east of south then 2.80 km in the direction 30.0° north of east and finally 5.20 km in the direction 22.0° west of north . Find the resultant vector using...
  46. D

    Vapour Liquid Equilibrium for a two component mixture.

    I am studying vapor liquid eqilibrium for two component systems. There are some things which confuse me right now. These are the questions: - (1) Since there has to be atleast one phase, the degrees of freedom are maximum three. Which means, the degrees of freedom are P, T and composition...
  47. S

    Ratio of molar mass 2 component ideal solution

    Homework Statement Component 1 and 2 form an ideal solution. The vapor pressure of pure component 1 is 13.3kPa at 298K, and the corresponding vapor pressure of component 2 is approximately zero. If the addition of 1.00 g of component 2 to 10.0g of component 1 reduces the total vapor pressure...
  48. C

    Vertical Component of a ball rolling off table

    Homework Statement A ball rolls off a table with a horizontal velocity of 5 m/s. If it takes 0.6 seconds for it to reach the floor what is the vertical component of the ball's velocity just before it hits the floor? (use g= 10 m/s^2) The second part of the question is what is the...
  49. S

    Calculate Weight Component on Inclined Plane

    Homework Statement the weight of a box on a plane inclined at 30 def is represented by the vector W. What is the magnitude of the component of the weight that acts parallel to the incline. Answer is given in terms of W possible anwsers .5W 1.5W .87W and W Homework Equations The...
  50. L

    Horizontal and vertical component of acceleration

    Honestly, I am soo confused...And this is the last problem left. If I get it wrong then I'm in trouble. Please help! I don't know what to do at all. A skier squats low and races down a(n) 11 degrees ski slope. During a 5 second interval, the skier accelerates at 2.3 m/s^2. (A) What is the...
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