نتایج جستجو برای: si engines
تعداد نتایج: 98358 فیلتر نتایج به سال:
Voxel representations have many advantages, such as ordered traversal during rendering and trivial very decent LOD through MIPmap. Special effect companies such Digital Domain or Rhythm&Hues now extensively use voxels engines, for semi-transparent objects such as clouds, avalanches, tornado or explosions, but also for complex solid objects. Several gaming companies are also looking into voxel e...
LITURATURE REVIEW ON EFFECT OF OXYGENATED ADDITIVES ON S.I. ENGINE PERFORMANCE & EMISSIONS Mr. Nilesh Patil, Mr. Anand Poul, Mr. Lalit More, Prof. Amit. R. Patil, Prof. R. N. Yerrawar UG Scholars, Mechanical Dept., M E S College of Engineering, Pune, Maharashtra, INDIA Assistant Professor, Mechanical Department, M E S College of Engineering, Pune, Maharashtra, INDIA ____________________________...
The finite-time operation of a quantum heat engine that uses a single particle as a working medium generally increases the output power at the expense of inducing friction that lowers the cycle efficiency. We propose to scale up a quantum heat engine utilizing a many-particle working medium in combination with the use of shortcuts to adiabaticity to boost the nonadiabatic performance by elimina...
The idea of using ammonia as fuel is nothing new the first well-known Belgium use buses fleet during World War II. Even if several studies performed mid-60’s investigated possibility to consider for internal combustion engines, mainly by means CFR experiments or 0D modelling, ammonia-based engine fueling methods are not ready be marketed this toxic molecule still poses major problems only becau...
In this paper, we describe how text mining (TM) has been used to support frame analysis within the context of the ASSIST project. This technology is capable of retrieving knowledge from unstructured text and presenting it to researchers in a concise form. In the course of the ASSIST project, which is a collaboration between social researchers and text mining experts, we have designed and protot...
We study stochastic energetic exchanges in quantumheat engines. Due tomicroreversibility, these obey a fluctuation relation, called the heat enginefluctuation relation, which implies the Carnot bound: nomachine can have an efficiency greater thanCarnot’s efficiency. The stochastic thermodynamics of a quantumheat engine (including the joint statistics of heat andwork and the statistics of effici...
In this article we use geometric optimal control to completely solve the problem of minimum-time transitions between thermal equilibrium and fixed average energy states of the quantum parametric oscillator, a system which has been extensively used to model quantum heat engines and refrigerators. We subsequently use the obtained results to find the minimum driving time for a quantum refrigerator...
Abstract: The difference between quantum isoenergetic process and quantum isothermal process comes from the violation of the law of equipartition of energy in the quantum regime. To reveal an important physical meaning of this fact, here we study a special type of quantum heat engine consisting of three processes: isoenergetic, isothermal and adiabatic processes. Therefore, this engine works be...
In the context of web search engines, the escalation between ranking techniques and spamdexing techniques has led to the appearance of faked contents in web pages. If random sequences of keywords are easily detectable, web pages produced by dedicated content generators are a lot more difficult to detect. Motivated by search engines applications, we will focus on the problem of automatic unnatur...
در سطح آزاد نیم رساناها برای مثال سطح سیلیکن، حالت تناوبی اتم های بلور گسیخته می شود به طوری که بعضی از پیوندهای اتمی به صورت پیوندهای آزاد باقی می مانند. در نتیجه حالت های سطحی دهنده و یا پذیرنده زیادی در گاف نواری سطح سیلیکن وجود دارد. به طور مشابه در اتصال شوتکی فلز – نیم رسانا (ti-si)، حالت های میان گاهی الکترونیکی در گاف نواری القا می شوند. به هر حال حالت های سطحی (و یا میان-گاهی) توانایی ...
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