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Computer Science IT Tutorials / what is stencil buffer in OpenGL
« Last post by admin1 on October 22, 2016, 08:03:24 AM »
the stencil buffer is used to restrict drawing to certain portions of the
screen. Think of it like a cardboard stencil that can be used with a can of
spray paint to make fairly precise painted images. For example, a classic use
is to simulate the view of a rear-view mirror in a car. You render the shape
of the mirror to the stencil buffer, and then draw the entire scene. The
stencil buffer prevents anything that wouldn’t be visible in the mirror from
being drawn.

graphics programming interview questions
22
Computer Science IT Tutorials / what is Depth Buffer in OpenGL
« Last post by admin1 on October 22, 2016, 08:02:14 AM »
The depth buffer stores a depth value for each pixel, and is used for
determining the visibility of objects in a three-dimensional scene. Depth is
measured in terms of distance to the eye, so pixels with larger depth-buffer
values are overwritten by pixels with smaller values
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The assumptions made for describing the working of the Carnot engine are as follows :
(i) The piston moving in a cylinder does not develop any friction during motion.
(ii) The walls of piston and cylinder are considered as perfect insulators of heat.
(iii) The cylinder head is so arranged that it can be a perfect heat conductor or perfect heat
insulator.
(iv) The transfer of heat does not affect the temperature of source or sink.
(v) Working medium is a perfect gas and has constant specific heat.
(vi) Compression and expansion are reversible.
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Merits and Demerits of Gas Turbines
Merits over I.C. engines :


1. The mechanical efficiency of a gas turbine (95%) is quite high as compared with I.C.
engine (85%) since the I.C. engine has a large many sliding parts.
2. A gas turbine does not require a flywheel as the torque on the shaft is continuous and
uniform. Whereas a flywheel is a must in case of an I.C. engine.
3. The weight of gas turbine per H.P. developed is less than that of an I.C. engine.
4. The gas turbine can be driven at a very high speeds (40,000 r.p.m.) whereas this is not
possible with I.C. engines.
5. The work developed by a gas turbine per kg of air is more as compared to an I.C. engine.
This is due to the fact that gases can be expanded upto atmospheric pressure in case of
a gas turbine whereas in an I.C. engine expansion upto atmospheric pressure is not
possible.
6. The components of the gas turbine can be made lighter since the pressures used in it are
very low, say 5 bar compared with I.C. engine, say 60 bar.
7. In the gas turbine the ignition and lubrication systems are much simpler as compared
with I.C. engines.
8. Cheaper fuels such as paraffine type, residue oils or powdered coal can be used whereas
special grade fuels are employed in petrol engine to check knocking or pinking.
9. The exhaust from gas turbine is less polluting comparatively since excess air is used for
combustion.
10. Because of low specific weight the gas turbines are particularly suitable for use in aircrafts.

Demerits of gas turbines

1. The thermal efficiency of a simple turbine cycle is low (15 to 20%) as compared with I.C.
engines (25 to 30%).
2. With wide operating speeds the fuel control is comparatively difficult.
3. Due to higher operating speeds of the turbine, it is imperative to have a speed reduction
device.
4. It is difficult to start a gas turbine as compared to an I.C. engine.
5. The gas turbine blades need a special cooling system.
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Computer Science IT Tutorials / Re: Configure OpenGL GLEW GLUT in Visual Studio
« Last post by admin1 on October 08, 2016, 02:39:13 AM »
another best tutorial to set up open gl in C++ (visual studio)
https://www.badprog.com/c-opengl-setting-up-visual-studio
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Computer Science IT Tutorials / Configure OpenGL GLEW GLUT in Visual Studio
« Last post by admin1 on September 28, 2016, 12:30:09 AM »
Configure OpenGL GLEW GLUT in Visual Studio
http://web.cs.wpi.edu/~emmanuel/courses/cs4731/A14/slides/lecture02.pdf

visual cpp visual c# visual basic
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Computer Science IT Tutorials / Scientific Data Analysis and Visualization with Python PDF
« Last post by admin1 on September 28, 2016, 12:22:38 AM »
Scientific Data Analysis and Visualization with Python,
VTK, and ParaView
Cory Quammen

http://conference.scipy.org/proceedings/scipy2015/pdfs/cory_quammen.pdf

Scientific Data Analysis and Visualization with Python
Computer Science PDF Download Python PDF Downloads Paraview PDF Downloads
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Bionik Laboratories - TORONTO
Post :  Mechanical Design Engineer
Expert user of 3D CAD software tools, SOLIDWORKS and AutoCAD
Proficient in 3D Modeling, FEA and GD&T
Familiar with certification testing and approvals

hr@bioniklabs.com
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Mechanical Engineering Jobs / Senior Engineer Materials and Welding Jobs CANADA
« Last post by admin1 on September 21, 2016, 12:36:12 AM »
Post : Senior Engineer, Materials and Welding
SUNCOR ENERGY INC.
Calgary, AB, CANADA
JOB REQUIREMENTS
    10 or more years of experience as a site materials and welding engineer in oil sands mining and extraction facilities
    Formal leadership experience would be an asset
    Bachelor's degree in Mechanical or Materials Engineering
    Registered as a Professional Engineer (P. Eng.) in the province of Alberta

Apply Now : https://jobs.suncor.com/job/Calgary-Senior-Materials-and-Welding-Engineer-AB/325754300?feedId=163100&utm_source=Workopolis&tcsource=apply&utm_campaign=Suncor_Workopolis&utm_medium=Workopolis
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