نتایج جستجو برای: delta sigma modulation

تعداد نتایج: 221942  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی برق و کامپیوتر 1390

سیستم های مخابراتی نسل جدید جهت کارکرد بهینه خود، به مبدل های آنالوگ به دیجیتال و دیجیتال به آنالوگی نیاز دارند. که بتوانند خود را با شرایط جدید کاری تطبیق دهند. این مبدل ها برای کارکرد بهینه، نیاز ندارند دقت و پهنای باند خود را با توجه به شرایط کاری مختلف تغییر دهند. مبدل دلتا-سیگما به دلیل داشتن تنوع در پارامترهای خود مثل تعداد حلقه ها، شکل قرارگیری آنتگرال گیرها در مدار و تعداد بیت های بلوک ...

2008
G. Houdek

A review on the current state of mode physics in classical pulsators is presented. Two, currently in use, time-dependent convection models are compared and their applications on mode stability are discussed with particular emphasis on the location of the Delta Scuti instability strip.

2000
Mala Murugappan Gargi Keeni

Six Sigma provides an effective mechanism to focus on customer requirements, through improvement of process quality. In the Global Engineering Development Center of Tata Consultancy Services (TCS – GEDC) at Chennai, India, Six Sigma projects are being carried out with the objective of improving on time delivery, product quality and in-process quality. This paper describes the application of the...

2011
Marcel Berthold Pablo Lachmann Alexander Nussbaumer Sergei Pachtchenko Andreas Kiefel Dietrich Albert

This paper examines educational components that influence the creation of mash-up designs in a Personalised Learning Environment (PLE). These educational components are linking widgets, small tools, to psychopedagogical information and competences of a learner. Taking these into account principles and rules for an adequate PLE mash-up can be identified and empirically studied. Finally an approa...

2002
Prasad V. Saraph

Use of simulation for capacity analysis is an upcoming field in Biotech industry. This paper discusses an application of discrete event simulation in the multi-product and multi-resource Filling Freeze Drying facility of Bayer Corporation’s Berkeley site. The SIGMA simulation model was used to estimate the current and future throughput capacity by taking into account current operations and vari...

2008
DESSISLAVA H. KOCHLOUKOVA

Thompson’s group F is the group of all increasing dyadic PL homeomorphisms of the closed unit interval. We compute Σm(F ) and Σm(F ;Z), the homotopical and homological Bieri-Neumann-Strebel-Renz invariants of F , and show that Σm(F ) = Σm(F ;Z). As an application, we show that, for every m, F has subgroups of type Fm−1 which are not of type FPm (thus certainly not of type Fm).

2011
Christian Brel Anne-Marie Pinna-Dery Philippe Renevier-Gonin Michel Riveill

Mash-ups emerged through the web 2.0 to juxtapose several applications and use them together. The next step after juxtaposition is the composition of existing applications to build a new one. A solution of this being born need is the reuse of parts from formers applications. To perform this composition and reuse in an easy and comfortable way, we propose a tool based on several extensions of se...

2013
Daniel Geisseler William R. Horwath

Several reasons contributed to the low success of early trials, including varieties that were not adapted to the soils, climatic conditions and photoperiod of the region. Most of the trials were carried out in the Delta, where the night temperatures were too low for the varieties used. In additions, the Delta soils were very fertile, while the varieties tested were bred to produce an adequate y...

2014
S. Narasimha M. Sushama

This paper main intents to present a flying capacitor multilevel inverter based shunt active power filter(APF) with Sigma-Delta modulation. A multilevel Sigma-Delta modulation(SDM) control can be applied to control power section of APF intention to reducing sensitivity to flying capacitor voltage deregulation and mending modulator performance. In these control section of APF perfect harmonic ca...

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