When user terminals powered by a finite battery source are used for wireless communications, energy constraints are likely to influence the desigdchoice of media access protocols. In th is paper, we analyze the energy efficiency of a multichannel wireless access protocol using a finite energy source in a mobile radio environment. The average number of correctly transmitted packets for a given a...

background & aim : worldwide prevalence of infertility has been reported to be 3-7% of all couples. there are varieties among the results of studies conducted on the prevalence of infertility in iran. the present study aimed to evaluate the trend of infertility using meta-analysis method in iran. methods & materials : we systematically reviewed all published papers in medline database of the na...

We present a unified computational approach to tensorbased morphometry in detecting the brain surface shape difference between two clinical groups based on magnetic resonance images. Our approach is novel in a sense that we combined surface modeling, surface data smoothing and statistical analysis in a coherent unified mathematical framework. The cerebral cortex has the topology of a 2D highly ...

Liquid Chromatography Time-of-Flight Mass Spectrometry (LC-TOF-MS) is widely used for profiling metabolite compounds. LC-TOF-MS is a chemical analysis technique that combines the physical separation capabilities of high-pressure liquid chromatography (HPLC) with the mass analysis capabilities of Time-of-Flight Mass Spectrometry (TOF-MS) which utilizes the difference in the flight time of ions d...

Department of Physics, University of Trieste CNR-IOM Laboratorio Nazionale TASC, Ba Italy. E-mail: [email protected] Department of Chemical and Pharmaceuti Giorgieri 1, 34127, Trieste, Italy. E-mail: fro Faculty of Mathematics and Physics, Univer Slovenia J. Stefan Institute, Jamova 39, SI-1000, Lju Department of Physics, Middle East Technic † Electronic supplementary information calculations,...

The analysis of networks of ecological trophic transfers is a useful complement to simulation modeling in the quest for understanding whole-ecosystem dynamics. Trophic networks can be studied in quantitative and systematic fashion at several levels. Indirect relationships between any two individual taxa in an ecosystem, which often differ in either nature or magnitude from their direct influenc...

The Covid pandemic has raised various legal issues, fueling the scientific debate on relationship between fundamental rights and freedoms in global emergency context. Moreover, a case law started developing within different jurisdictions. Additionally, constitutional Courts, countries, have ruled over potential conflicts of interest among central powers local ones, even some decisa Court Justic...