نتایج جستجو برای: stability and change

تعداد نتایج: 16930430  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

2008
Tomomi Muto Taro Tani

We study phase structure of the moduli space of a D0-brane on the orbifold C3/Z2 × Z2 based on stability of quiver representations. It is known from an analysis using toric geometry that this model has multiple phases connected by flop transitions. By comparing the results of the two methods, we obtain a correspondence between quiver representations and geometry of toric resolutions of the orbi...

Journal: :The journals of gerontology. Series B, Psychological sciences and social sciences 2005
Bas Steunenberg Jos W R Twisk Aartjan T F Beekman Dorly J H Deeg Ad J F M Kerkhof

Data from the Longitudinal Aging Study Amsterdam were used to study the relationship between neuroticism and aging. At baseline, cross-sectional analyses of data from 2,117 respondents (aged 55-85 years, M = 70) showed no significant age differences. The magnitude of the 3- and 6-year stability coefficients was high, and 12% of the elderly participants showed a clinically relevant mean level ch...

Journal: :Journal of personality and social psychology 2005
Frank Fujita Ed Diener

Using data from 17 years of a large and nationally representative panel study from Germany, the authors examined whether there is a set point for life satisfaction (LS)--stability across time, even though it can be perturbed for short periods by life events. The authors found that 24% of respondents changed significantly in LS from the first 5 years to the last 5 years and that stability declin...

2008
George W. Bush Jonathan Renshon

Cognitive frameworks and belief systems are the primary lenses through which presidents view the world. Two important questions are whether these beliefs ever change significantly, and if so, what causes these changes? This article develops empirical data on the strategic and operational beliefs of President George W. Bush (GWB) as a means of examining the theoretical basis for how and why core...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم تربیتی و روانشناسی 1388

چکیده هدف اصلی این پژوهش شناسایی الزامات نظام مدیریت کیفیت فراگیر در حوزه پژوهشی دانشگاه اصفهان بود. سوالهای پژوهش با توجه به مولفه های مدیریت کیفیت (تعهد مدیران، بهبود مستمر فرایندها ، مشتری محوری ، منابع انسانی ، مدیریت اطلاعات ، زیرساختهای کیفیت ، استفاده از نتایج ، انعطاف پذیری، مشارکت در فعالیتهای پژوهشی، ایجاد فرهنگ کیفیت و تناسب ساختارهای سازمانی) که بر اساس مطالعه استانداردهای بین المل...

The hydro turbine dynamics have a considerable influence on the dynamic stability of power system. In the study of dynamic stability, the system is modeled by the linear differential equations (small  signal analysis). Small signal stability of power systems is needed in all conditions and only is dependent on the conditions of power system performance before commotion occurrence. This paper pr...

Journal: Money and Economy 2012
Bita Mohebikhah, Parastoo Shajari,

 This paper investigates the financial stability, measured by z-score technique in Islamic banking system of 20 countries from 2000 to 2010. We compare the stability of Islamic banks to the commercial banks, before and after the financial crisis. The empirical results from panel estimation show that: a) the large Islamic banks are more stable than the large commercial banks and furthermo...

2004
François Castella Philippe Chartier Erwan Faou Dominique Bayart Florence Leplingard Catherine Martinelli

In this paper we study a discrete Raman laser amplification model given as a LotkaVolterra system. We show that in an ideal situation, the equations can be written as a Poisson system with boundary conditions using a global change of coordinates. We address the questions of existence and uniqueness of a solution. We deduce numerical schemes for the approximation of the solution that have good s...

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