نتایج جستجو برای: sigma coordinate

تعداد نتایج: 73906  

1992
Theodore J. Allen

In this Letter the method of Lund is applied to formulate a variational principle for the motion of charged vortices in an effective non-linear Schrödinger field theory describing finite size two-dimensional quantum Hall samples under the influence of an arbitrary perpendicular magnetic field. Freezing out variations in the modulus of the effective field yields a U(1) sigma-model. A duality tra...

Journal: :مدیریت اطلاعات سلامت 0
حمید مقدسی دانشیار، مدیریت اطلاعات بهداشتی، دانشگاه علوم پزشکی شهید بهشتی، تهران فاطمه سمنانی کارشناس ارشد، بهداشت جامعه، سرپرست کنترل کیفیت بیمارستان شهید هاشمی نژاد، تهران

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 introduction: health care organizations have begun applying six sigma methods into their operations. on the other hand, the difficulty of using indicators to compare health care providers in a meaningful way has led to an increased focus on using information about “adverse events”- that is , events that should not happen i...

Journal: :Annales Henri Poincaré 2021

Abstract In 2017, Lienert and Tumulka proved Born’s rule on arbitrary Cauchy surfaces in Minkowski space-time assuming a corresponding collapse horizontal relative to fixed Lorentz frame, as well given unitary time evolution between any two surfaces, satisfying that there is no interaction faster than light propagation light. Here, we prove from different, but equally reasonable, set of assumpt...

Journal: :Journal of Mathematical Physics 2021

A double field theory algebroid (DFT algebroid) is a special case of the metric (or Vaisman) algebroid, shown to be relevant in understanding symmetries theory. In particular, DFT structure defined on vector bundle over doubled spacetime equipped with C-bracket this paper, we give definition as curved L∞-algebra and show how implementation strong constraint can formulated an morphism. Our resul...

Journal: :international journal of industrial engineering and productional research- 0
selva staub haliç university sam khoury athens state university kouroush jenab embry-riddle aeronatical university

enterprise resource planning (erp) has become the most strategic tool for an organization to employ. a leading erp solution is sap®. it has been employed by organizations to enable them to collaborate on different projects and to integrate all aspects of operations. just as organizations have adopted erp solutions, they employed quality initiatives that are designed to help organizations maximi...

In this paper, by considering the notion of $Sigma$-hyperalgebras for an arbitrary signature $Sigma$, we study the notions of regular and strongly regular relations on a $Sigma$-hyperalgebra, $mathfrak{A}$. We show that each regular relation which contains a strongly regular relation is a strongly regular relation. Then we concentrate on the connection between the fundamental relation of $mathf...

ژورنال: فیزیک زمین و فضا 2018

Transforming geocentric Cartesian coordinates (X, Y, Z) to geodetic curvilinear coordinates (φ, λ, h) on a biaxial ellipsoid is one of the problems used in satellite positioning, coordinates conversion between reference systems, astronomy and geodetic calculations. For this purpose, various methods including Closed-form, Vector method and Fixed-point method have been developed. In this paper, a...

2013
R. J. Small S. Carniel J. Teixeira R. Allard

In this paper the effect of a summer Mistral event on the Ligurian and Tyrrhenian Seas in the northwestern Mediterranean is discussed, using a coupled numerical model and satellite and in situ observations. The focus is on the spatial and temporal distribution of the ocean mixed layer response to the strong winds, and on how this is affected by atmosphere–ocean coupling. The model used is the C...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی برق و کامپیوتر 1391

قبلاً نشان داده شده است که در کانال های چندکاربره با شرط حداقل نرخ ارسالی‏‏، برای کانال های پخش با فرض محوشوندگی رایلی‏، رایس و ناکاگامی برای گیرنده های مختلف‏، ظرفیت کاربری (یا به عبارتی حداکثر تعداد کاربرانی که می توانند بطور همزمان فعال باشند) ‏بصورت لگاریتمی دوگانه مقیاس بندی می شود بعبارتی برای توزیع های فوق بترتیب بصورت ‎$ ln (p ln n)/r_{min} $‎‏، ‎$ ln (2 p ln n)/r_{min} $‎ و ‎$ ‎ln(‎frac...

Journal: :transactions on combinatorics 2015
xueliang li huishu lian

given a graph $g$, let $g^sigma$ be an oriented graph of $g$ with the orientation $sigma$ and skew-adjacency matrix $s(g^sigma)$. then the spectrum of $s(g^sigma)$ consisting of all the eigenvalues of $s(g^sigma)$ is called the skew-spectrum of $g^sigma$, denoted by $sp(g^sigma)$. the skew energy of the oriented graph $g^sigma$, denoted by $mathcal{e}_s(g^sigma)$, is defined as the sum of the n...

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