نتایج جستجو برای: nonuniform compression

تعداد نتایج: 97932  

2002
S. Barmada M. Raugi

A wavelet approach to the analysis of nonuniform high-speed interconnects with frequency dependent parameters is presented in this paper. The nonuniform interconnects are modeled by the use of nonuniform multiconductor transmission line equations in the frequency domain. Two different methods are proposed here (differential and integral formulation): in both of them the space variable is expand...

1999
X. M. Guo

Wave, antenna impedance, plasma density, and temperature anisotropy measurements are carried out for a helicon plasma source in nonuniform and uniform static magnetic fields. Strong axial density gradients associated with the nonuniform magnetic fields are observed to affect wave fields, absorption, and source efficiency. The wave field and antenna input impedance measurements are compared with...

2017
Kaili Jiang Jun Zhu Bin Tang

Periodic nonuniform sampling occurs in many applications, and the Nyquist folding receiver (NYFR) is an efficient, low complexity, and broadband spectrum sensing architecture. In this paper, we first derive that the radio frequency (RF) sample clock function of NYFR is periodic nonuniform. Then, the classical results of periodic nonuniform sampling are applied to NYFR. We extend the spectral re...

2009
Sug-Bong Choe Sung-Chul Shin

Influence of a nonuniform anisotropy distribution on domain reversal dynamics in ferromagnetic thin films has been investigated. A micromagnetic model has been developed adopting a Monte Carlo algorithm to examine the thermally activated reversal process. In this study, the uniaxial magnetic anisotropy magnitude is spatially nonuniform. Interestingly, the simulation results demonstrate the cruc...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Tianxiang Su Prashant K Purohit

In nanofluidic devices, nonuniform confinement induces an entropic force that automatically drives biopolymers toward less-confined regions to gain entropy. To understand this phenomenon, we first analyze the diffusion of an entropy-driven particle system. The derived Fokker-Planck equation reveals an effective driving force as the negative gradient of the free energy. The derivation also shows...

1999
Wenjia Fang Larry Peterson

This paper reports on a study of traffic patterns among Autonomous Systems (ASes), based on traces taken at various points in the Internet. The traces display a highly nonuniform distribution of traffic on flows between pairs of hosts, networks, and ASes. Aggregation along coarser granularities, such as networks or ASes, accentuates this nonuniform distribution. In one typical trace, for exampl...

2007
Burkhard Kleihaus Jutta Kunz

We explore via linearized perturbation theory the Gregory-Laflamme instability of rotating black strings with equal magnitude angular momenta. Our results indicate that the Gregory-Laflamme instability persists up to extremality for all even dimensions between six and fourteen. We construct rotating nonuniform black strings with two equal magnitude angular momenta in six dimensions. We see a fi...

2008
Piotr Faliszewski

We study the concept of bribery in the situation where voters are willing to change their votes as we ask them, but where their prices depend on the nature of the change we request. Our model is an extension of the one of Faliszewski et al. [9], where each voter has a single price for any change we may ask for. We show polynomial-time algorithms for our version of bribery for a broad range of v...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه خلیج فارس - دانشکده مهندسی 1393

in civil engineering concrete is a material combined of hydraulic cement, sand, gravel and water. gravel and sand compose 60 to 70 percent of concrete. these aggregates support compression force of concrete. cement paste acts as glue to stick grain together. in bushehr factories producing aggregates do not operate according to astm standards, so that fineness modulus (fm) of the produced sands ...

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