This paper presents cell configuration strategies for orthogonal frequency division multiple access (OFDMA) based hierarchical cellular systems (HCS). We consider two cases: the symmetric case that HCS is used to extend the data rate coverage and the asymmetric case that HCS is applied to cover the hot spot. We formulate the cell configuration strategy problem with spectral reuse planning and c...

Cells integrate multiple measurement modalities to navigate their environment. Soluble and substrate-bound chemical gradients and physical cues have all been shown to influence cell orientation and migration. Here we investigate the role of asymmetric hydraulic pressure in directional sensing. Cells confined in microchannels identified and chose a path of lower hydraulic resistance in the absen...

In this paper we present a method for Asymmetric Multiple Description Coding (AMDC) using Reed Solomon Channel Codes and Layered Coding. Asymmetric MDC can be used when channel conditions are not uniform. For instance peer-to-peer networks or heterogeneous (wired and wireless) networks may offer different channels with different bandwidths and loss characteristics. The AMDC encoder can be desig...

During axon guidance, growth cones navigate toward attractive cues by inserting new membrane on the cue side. This process depends on Ca(2+) release from endoplasmic reticulum (ER) Ca(2+) channels, but the Ca(2+) sensor and effector governing this asymmetric vesicle export remain unknown. We identified a protein complex that controls asymmetric ER Ca(2+)-dependent membrane vesicle export. The C...

Abstract The popularity of social media facilitates the dissemination private information, which has significant implications for investors’ behavior and market efficiency. This paper examines dynamic dependence between internet postings herd in China’s open-end fund by applying DCC-GARCH TVP-SV-VAR models. results show that relationship is time-varying asymmetric. Specifically, have a negative...

Fluctuations in the receptor current of the labellar sugar receptor of the fleshfly were analyzed. The receptor current was recorded extracellularly as a drop in potential between the tip and the base of the taste sensillum. After treatment with tetrodotoxin, the taste cells completely lost their impulses but retained their receptor currents, thus facilitating analysis of the receptor current w...

A theory for a nanometer-scale pump based on the ratchet concept is presented. A lattice gas model with a set of moves that satisfy hydrodynamic equations is used to describe an asymmetric nanometer channel connecting two reservoirs of fluid. The channel, which is coupled to an external oscillatory (or stochastic) driving force, pumps fluid from one reservoir to the other. The frequency of the ...

Compact models of short channel effect in symmetric and asymmetric double gate MOSFETs are developed by solving two-dimensional (2-D) Poisson’s equation as a boundary value problem in the subthreshold region. The subthreshold current is obtained through the 2-D analytic potential distribution function. Threshold voltage rolloff, drain induced barrier lowering (DIBL) and subthreshold slope degra...

Low-density parity-check (LDPC) codes on symmetric memoryless channels have been analyzed using statistical physics by several authors. In this paper, statistical mechanical analysis of LDPC codes is performed for asymmetric memoryless channels and general Markov channels. It is shown that the saddle point equations of the replica symmetric solution for a Markov channel is equivalent to the den...

BACKGROUND NEG2 regulates CFTR gating but the mechanism is unknown. RESULTS A putative NEG2-CL3 electrostatic attraction, possibly weakened by Arg-764/Arg-766 of the R domain, prohibited CFTR activation. A charge exchange between NEG2 and CL3 caused misprocessing. CONCLUSION Electrostatic regulation of CFTR activation and processing may be asymmetric at the CL3-R interface. SIGNIFICANCE T...