نتایج جستجو برای: differential transmission

تعداد نتایج: 524937  

Journal: :journal of physical & theoretical chemistry 2012
m. h. ghorbani r. fazaeli a. ghoorchian

using a time-dependent-density functional theory (td-dft), configuration interaction singles (cis) and zerner’s intermediate neglect of differential overlap (zindo) methods, we have investigated the uv-visible spectra of one new intramolecular cyclization at before and after intramolecular attack. all structures were optimized at the b3lyp/6-311++g** level while uv-visible parameters were calcul...

Journal: :IEEE Trans. Communications 1999
Peter Hoeher John Lodge

Multiple-symbol differential detection is known to fill the gap between conventional differential detection of PSK ( -DPSK) and coherent detection of -PSK with differential encoding ( -DEPSK). Emphasis has been so far on soft-input/hard-output detectors applied in uncoded systems. In this paper, we investigate a receiver structure suitable for coded DPSK signals on static and time-varying chann...

Journal: :Sensors 2016
Yadong Liu Xiaolei Xie Yue Hu Yong Qian Gehao Sheng Xiuchen Jiang

The accurate detection of high-frequency transient fault currents in overhead transmission lines is the basis of malfunction detection and diagnosis. This paper proposes a novel differential winding printed circuit board (PCB) Rogowski coil for the detection of transient fault currents in overhead transmission lines. The interference mechanism of the sensor surrounding the overhead transmission...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1378

در این تحقیق روش d.q. بررسی و مقایسه آن با سایر روش های متعارف همانند اجزاء محدود، تفاوت های محدود و جواب تحلیلی انجام گردیده است . همچنین با در نظر گرفتن تغییر شکل های برشی و تاثیر anisotropy در رفتار صفحات ، فرکانس ها، تغییر مکانها و نیروها مورد بررسی قرار گرفته اند که منجر به نوشتن برنامه کامپیوتری که ذیلا بطور خلاصه معرفی می گردد شده است . برنامه difqalp به زبان visual basic نوشته شده است و...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه پلیمر و پتروشیمی ایران - پژوهشکده علوم 1389

اُرگانو سیلان سه عاملی به نام (3-آمینوپروپیل) تری اتوکسی سیلان، برای اصلاح شیمیایی مونتموریلونیت رس مورد استفاده قرار گرفت. واکنش پیوندزنی سیلان در دو محیط یکی در شرایط خشک (حلال تولوئن) و دیگری با حضور آب و الکل صورت گرفت. سپس رس اولیه و رس پیوند زده شده سیلانی، در فرایند پلیمریزاسیون بین سطحی نایلون-66 شرکت داده شدند تا لایه ای از نایلون-66 روی صفحات رس سنتز شود، و بنابراین، سازگاری آن با ماتر...

Journal: :Physics in medicine and biology 2002
Samuel P Mickan Abdellah Menikh Haibo Liu Carmen A Mannella Robert MacColl Derek Abbott Jesper Munch X C Zhang

We report the first use of differential terahertz time-domain spectroscopy for bioaffinity sensing. Binding is observed by measuring the transmission of a thin layer of biotin bound to the sensor protein avidin. We demonstrate the THz wave transmission of a sub-micron-thick film and sensitivity to 0.1 microg cm(-2) of biotin. These results point the way for a host of biosensor applications usin...

2012
K. P. HADELER

We consider the problem of identifying the time-dependent transmission rate from incidence data and from prevalence data in epidemic SIR, SIRS, and SEIRS models. We show closed representation formulas avoiding the computation of higher derivatives of the data or solving differential equations. We exhibit the connections between the formulas given in several recent papers. In particular we expla...

2017
Kun Li Xiaoling Hao

*Correspondence: [email protected] Department of Mathematics, Inner Mongolia University, Hohhot, 010021, China Abstract The present paper deals with the dependence of eigenvalues of 2nth order boundary value transmission problems on the problem. The eigenvalues depend not only continuously but also smoothly on the problem. Some new differential expressions of eigenvalues with respect to an endpoi...

2006
David Colton Lassi Päivärinta John Sylvester

The interior transmission problem is a boundary value problem that plays a basic role in inverse scattering theory but unfortunately does not seem to be included in any existing theory in partial differential equations.This paper presents old and new results for the interior transmission problem ,in particular its relation to inverse scattering theory and new results on the spectral theory asso...

Journal: :MATEC web of conferences 2021

The article presents the results of calculations to justify choice transmission components and traction electric drive. parameters gearing transfer case differential has been substantiated. bearings is substantiated from conditions ensuring given resource strength for main gear.

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