Postdoctoral positions in biology education research (BER) are becoming increasingly common as the field grows. However, many life science graduate students are unaware of these positions or do not understand what these positions entail or the careers with which they align. In this essay, we use a backward-design approach to inform life science graduate students of postdoctoral opportunities in...

A narrowband multiuser receiver based on successive signal detection and subtraction, is proposed. The Bit Error Rate (BER) performance for M-PSK modulated signals is evaluated and analytical approximations for the BER of the individual signals are presented and compared to the actual BER. The effect of inaccurately estimated signal parameters due to noise is analyzed. BER results are presented...

In this paper we compare the BER by two most popular methods for PSK and comparative both and theoretical BER with Gaussian channel or fading. We study Bit-Error Rate of Coherent Mary PSK with Gray Code Bit Mapping and Semianalytic BER for PSK. Both are very well-known method for evaluating the BER of a digital communication System. Both technique uses according to application. In this paper we...

Numerous human pathologies result from unrepaired oxidative DNA damage. Base excision repair (BER) is responsible for the repair of oxidative DNA damage that occurs in both nuclei and mitochondria. Despite the importance of BER in maintaining genomic stability, knowledge concerning the regulation of this evolutionarily conserved repair pathway is almost nonexistent. The Saccharomyces cerevisiae...

We have developed a mathematical framework to study the interplay of processes thought to be involved in the development of the retinotectal projection. Our model consists of two input layers which correspond to the retinae of both eyes, and one output layer which corresponds to either the right or the left half of the tectum. The connections between eyes and tectum are described by eeective sy...

In this paper, the integration of power control and turbo coding is adopted to achieve reliable communications over Ka-band code-division multiple-access (CDMA)-based low earth orbit (LEO) satellite systems. The effect of imperfect power control on the bit error ratio (BER) performance is analyzed, and the upper bounds on BER are also derived for the case of slow and fast imperfect power contro...

This project studies and identifies the PSK-based digital modulation scheme (BPSK, QPSK or GMSK) that gives the best BER performance in a multipath fading environment using computer simulation (MATLAB). Each PSK-based digital modulation are modeled and simulated under different channel conditions. Subsequently, a comparison study is carried out to obtain the BER performance for each PSK-based t...

PURPOSE Lung cancer, one of the most frequently diagnosed cancers in the world, is characterized by relatively high morbidity and mortality. Berbamine (BER) has been initially reported to exert anti-proliferative effects against a series of cancers. METHODS In this study the in vitro cytotoxicity of BER was measured by MTT assay. In vivo anti-cancer efficacy of BER was assessed in A549 xenogr...

Breast cancer, the leading cause of cancer-related mortality worldwide in females, has high metastastic and recurrence rates. The aim of the present study was to evaluate the anti-metastatic and anticancer in situ effect of berberine hydrochloride (BER) in MDA-MB-231 cells. BER dose-dependently inhibited proliferation and the IL-8 secretion of MDA-MB-231 cells. Additional experiments revealed t...