نتایج جستجو برای: asymmetric distribution

تعداد نتایج: 668717  

Journal: :Proceedings. Mathematical, physical, and engineering sciences 2017
Chaozhen Wei Brian J Spencer

We construct a Fokker-Planck reaction (FPR) model to investigate the dynamics of the coupled epitaxial growth and shape transition process of an array of quantum dots (QDs). The FPR model is based on a coupled system of Fokker-Planck equations wherein the distribution of each island type is governed by its own Fokker-Planck equation for growth, with reaction terms describing the shape transitio...

2014
Xing Xiao Yao Yao Lei-Ming Zhou Xiaoguang Wang

An unknown quantum state cannot be copied and broadcast freely due to the no-cloning theorem. Approximate cloning schemes have been proposed to achieve the optimal cloning characterized by the maximal fidelity between the original and its copies. Here, from the perspective of quantum Fisher information (QFI), we investigate the distribution of QFI in asymmetric cloning machines which produce tw...

Journal: :Journal of biomedical science and engineering 2013
Jiahe Li Pengcheng Bu Kai-Yuan Chen Xiling Shen

Asymmetric cell division is an important mechanism for creating diversity in a cellular population. Stem cells commonly perform asymmetric division to generate both a daughter stem cell for self-renewal and a more differentiated daughter cell to populate the tissue. During asymmetric cell division, protein cell fate determinants asymmetrically localize to the opposite poles of a dividing cell t...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Christian Löfke Marta Zwiewka Ingo Heilmann Marc C E Van Montagu Thomas Teichmann Jirí Friml

Gravitropic bending of plant organs is mediated by an asymmetric signaling of the plant hormone auxin between the upper and lower side of the respective organ. Here, we show that also another plant hormone, gibberellic acid (GA), shows asymmetric action during gravitropic responses. Immunodetection using an antibody against GA and monitoring GA signaling output by downstream degradation of DELL...

2017
Ozgur Koray Sahingoz

Wireless Sensor Networks (WSNs) are more vulnerable to security attacks than wired networks because of their wireless and dynamic nature. In today’s WSNs, the sensor nodes act not only as routers but also as communication endpoints, and they are also responsible for the security of the messages. Therefore, it is important to define whether an incoming message originates from a trustworthy node ...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1994
Mogi

We apply the graphic transformation method[11],[25] to obtain the steady state distribution of asymmetric Boltzmann machines as an extension of the symmetric equilibrium case. We give the magnitude of deviation from the equilibrium explicitly as a function of the asymmetry in the connections between the neurons. We show that the steady state of asymmetric Boltzmann machines is characterized by ...

2014
Sarhan M. Musa Matthew N. O. Sadiku Roy G. Perry

In this paper, we consider the finite element modeling of multilayer transmission lines for high-speed digital interconnects. We mainly focused on the modeling of the transmission structures with both cases of symmetric and asymmetric geometries. We specifically designed asymmetric coupled microstrips and four-line symmetric coupled microstrips with a two-layer substrate. We computed the capaci...

2002
Jean-Paul Chavas Aashish Mehta

We develop a reduced-form model of price transmission in a vertical sector, allowing for refined asymmetric, contemporaneous and lagged, own and cross price effects. The model is used to analyze wholesale-retail price dynamics in the US butter market. The analysis provides strong evidence of asymmetric price transmissions. It documents the complex nature of nonlinear price dynamics in a vertica...

Journal: :Current opinion in microbiology 2003
Xavier Darzacq Erin Powrie Wei Gu Robert H Singer Daniel Zenklusen

Active transport and localized translation of the ASH1 mRNA at the bud tip of the budding yeast Saccharomyces cerevisiae is an essential process that is required for the regulation of the mating type switching. ASH1 mRNA localization has been extensively studied over the past few years and the core components of the translocation machinery have been identified. It is composed of four localizati...

2009
Dongming Zhu John W. Galbraith

CIRANO Le CIRANO est un organisme sans but lucratif constitué en vertu de la Loi des compagnies du Québec. Le financement de son infrastructure et de ses activités de recherche provient des cotisations de ses organisations-membres, d'une subvention d'infrastructure du Ministère du Développement économique et régional et de la Recherche, de même que des subventions et mandats obtenus par ses équ...

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