نتایج جستجو برای: local stability

تعداد نتایج: 818164  

Journal: :the modares journal of electrical engineering 2015
s.ehsan razavi s.k.y. nikravesh saeed shamaghdari r. rahmani

this paper proposes a new method of gain scheduling control design for a nonlinear system which is described as linear parameter varying form. a performance measure based on linear matrix inequality is introduced. to consider stability and performance measures in design process, the h∞ loop-shaping method is used to design the local controllers, which can be described as state feedback observer...

2011
Xu Wang Håvard Fjær Grip Ali Saberi Anton A. Stoorvogel Ingmar Saberi

In this paper, we investigate the relationship between Lp stability and internal stability of nonlinear systems. It is shown that under certain conditions, Lp stability without finite gain implies attractivity of the equilibrium, and that local Lp stability with finite gain implies local asymptotic stability of the origin.

Journal: :journal of periodontology and implant dentistry 0
mohammad ketabi narges fahami shahram amini

background and aims: plasma rich in growth factors (prgfs) has been recently proposed as an aid to enhance regeneration of osseous and epithelial tissues in oral surgery. the purpose of this study was to determine the effect of local application of platelet rich plasma (prp) on implant stability measured by periotest. materials and methods: a total of 24 implants were placed in mandible of 12 l...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده کویر شناسی 1390

امروزه از مهمترین بحث هایی که بخش زیادی از زمان محققین را به خود اختصاص داده است، مباحث مربوط به آب به عنوان حیاتی ترین ماده بقای حیات انسان. تغییر در آب در دسترس می تواند واکنش جدی در پایداری آب زیست محیطی مناطق خشک و نیمه خشک ایجاد کند. لذا یکی از پر کاربردترین مباحث مربوط به هیدرولوژی بررسی هیدروگراف جریان می باشد که امکان مطالعه حجم سیلاب و میزان ذخیره حوزه پس از قطع بارندگی و نیز سهم آب زی...

Journal: :civil engineering infrastructures journal 0
mojtaba karimaee tabarestani ph.d. of water engineering, civil and environmental department, amirkabir university of technology, p.o. box 15915, tehran, iran amir reza zarrati professor, civil and environmental department, amirkabir university of technology, p.o. box 15915, tehran, iran

an attempt was made to develop a method for sizing stable riprap around bridge piers based on a huge amount of experimental data, which is available in the literature. all available experimental data for circular as well as round-nose-and-tail rectangular piers were collected. the data for rectangular piers, with different aspect ratios, aligned with the flow or skewed at different angles to th...

2017
Thomas Sinclair THOMAS SINCLAIR

The purpose of this note is to discuss the local lifting property in terms of an equivalent approximation-type property, CP-stability, which was formulated by the author and Isaac Goldbring for the purposes of studying the continuous model theory of C∗-algebras and operator systems.

2013
Jian Liu Thurmon E Lockhart

OBJECTIVES Load carrying tasks are recognized as one of the primary occupational factors leading to slip and fall injuries. Nevertheless, the mechanisms associated with load carrying and walking stability remain illusive. The objective of the current study was to apply local dynamic stability measure in walking while carrying a load, and to investigate the possible adaptive gait stability chang...

1998
John F. Hawley Steven A. Balbus Wayne F. Winters

We employ a variety of numerical simulations in the local shearing box system to investigate in greater depth the local hydrodynamic stability of Keplerian differential rotation. In particular we explore the relationship of Keplerian shear to the nonlinear instabilities known to exist in simple Cartesian shear. The Coriolis force is the source of linear stabilization in differential rotation. W...

2015
Toby S. Cubitt Angelo Lucia Spyridon Michalakis David Perez-Garcia

Open quantum systems weakly coupled to the environment are modeled by completely positive, trace preserving semigroups of linear maps. The generators of such evolutions are called Lindbladians. In the setting of quantum many-body systems on a lattice it is natural to consider Lindbladians that decompose into a sum of local interactions with decreasing strength with respect to the size of their ...

2013
Marcelo Samuel Berman Fernando de Mello Gomide Fernando de Mello

We prove, by a general relativistic derivation, that the Universe is locally and globally, stable, resembling an extreme Kerr-white-hole—Universe.

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