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Scientific Visualization Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM MULTIMEDIA INTERVIEW QUESTIONS SCIENTIFIC VISUALIZATION INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

Scientific Visualization Interview Questions & Answers - Learning Mode

From a computing perspective, SciVis is part of a greater field called visualization. This involves research in computer graphics, image processing, high performance computing, and other areas. The same tools that are used for SciVis may be applied to animation, or multimedia presentation, for example. Visualization today has ever-expanding applications in science, education, engineering (e.g., product visualization), interactive multimedia, medicine, etc. Typical of a visualization application is the field of computer graphics.

Try Scientific Visualization Interview Questions & Answers - Exam Mode

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Scientific Visualization Interview Questions & Answers - Learning Mode
Try Scientific Visualization Interview Questions & Answers - Exam Mode
Question: Have you built any components with actionscript? If so explain how you did it?

Answer: CountryComboBox.as
package components
{ import mx.controls.ComboBox;
public class CountryComboBox extends ComboBox
{ public function CountryComboBox()
{ dataProvider = [ "United States", "United Kingdom" ];
}

}
}

<?xml version="1.0" encoding="utf-8"?>

<mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns:custom="components.*"
width="220" height="115"
>

<custom:CountryComboBox />
</mx:Application>
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Question: What is Scientific Visualization package?

Answer: The general topics include:<br><br> - Software and hardware requirements necessary to run a particular package;<br> - Software category, i.e. turnkey application or application builder;<br> - Implementation of the user interface, and its ease of use;<br> - Support for application building and functional extension;<br> - Support for distributive processing and computational steering;<br> - Documentation and help facilities. <br>< Source: CoolInterview.com
Question: I am going to add images into a tag. How will it resize itself in adobe flex actionscript?

Answer: To let Flex resize the image as part of laying out your application, set the height or width properties to a percentage value. Flex attempts to resize components with percentage values for these properties to the specified percentage of their parent container.

Or by default, Flex does not resize the image. The scaleContent property has a default value of true, therefore, Flex scales the image as it resizes it to fit the specified height and width. The aspect ratio is maintained by default Source: CoolInterview.com
Question: What is the difference between httpService and Data Service?

Answer: The services-config.xml configuration file is required at compile time if the Flex application uses Flex Data Services. In the case of RPC services, this applies to all applications that use RemoteObject or proxy-based WebService or HTTPService.
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Question: How do you generate random numbers within a given limit with actionscript?

Answer: Math.round(Math.random() * (high - low)) + low
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Question: How do you implement push on a flex applications?

Answer: Using BlazeDS Server, LiveCycle Data Services Source: CoolInterview.com
Question: What is a resource Manager in flex actionscript?

Answer: The ResourceManager ? now handles access to all localized resources in an application. Any components that extend UIComponent, Formatter, or Validator now have a new resourceManager property, which lets you easily access the singleton instance of this manager. If you?re writing some other kind of class that needs to use the ResourceManager, you can call ResourceManager.getInstance() to get a reference to it.

Source: CoolInterview.com
Question: What is Scientific Visualization Glossary?

Answer: These techniques simulate continuous motion by rapidly displaying images. The viewer is given the impression that he is watching a continuous motion. To achieve this, the graphical hardware needs image display rates of at least 25 images per second, otherwise motion will look shaky. Most graphical hardware can not reach that display rate for moderate sized images, so one uses video hardware. Source: CoolInterview.com
Question: What is Visualization techniques and methods?

Answer: The first visualization technique discussed is the generation of isosurfaces. Since the attributes consist of scalar data defined on a three dimensional grid, isosurfaces served as a natural way to extract surface geometry for this data set. By appropriate thresholding the colormap so that positive potential is represented by red, and negative potential by blue, a visualization was generated that indicated both the shape of the molecular orbits as well as their potential. An example using this i Source: CoolInterview.com
Question: What is Scientific Visualization Color coding?


Answer: <br>Colors and light are essential to visualization. Most visualization techniques contain a step in which data values are mapped to colors to make the range of the data visible (see the next sections). The interpretation of results produced by these visualization techniques depends crucially on the mapping of data to colors because the human eye is more sensitive to some parts of the visible spectrum of light than to Source: CoolInterview.com
Question: I need to load an image from flickr into my application. Do I need a crossdomain.xml file on flickr?

Answer: File is already there , we need to register our ip address to flicker?s crossdomain.xml
Since the images are located on a flickr server like farm1.static.flickr.com and there is no crossdomain.xml file on that server (there is a crossdomain.xml for api.flickr.com so you can use the api) that means you can?t get access to the bitmapData of the loaded images when you load them from flickr. This is dumb, but that?s the way it is. So you can load images just fine, but the reflection class copies Source: CoolInterview.com
Question: Is it possible to make httpService Requests synchronous in adobe flex?

Answer: No.
Basically, what we are about to do is creating XMLHttpRequest with Javascript in Flex, and calling a server data with the parameters we will give to the object.
e.g. xmlHttpRequest.open("GET","http://localhost/Default.aspx",false);
1. Request Type: GET or POST
2. Requested URL
3. Communication Type: true for asynchronous, false for synchronous.
Source: CoolInterview.com

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