Design considerations for a monolithic, GaAs, dual-mode, QPSK/QASK, high-throughput rate transceiver

A monolithic, GaAs, dual mode, quadrature amplitude shift keying and quadrature phase shift keying transceiver with one and two billion bits per second data rate is being considered to achieve a low power, small and ultra high speed communication system for satellite as well as terrestrial purposes. Recent GaAs integrated circuit achievements are surveyed and their constituent device types are evaluated. Design considerations, on an elemental level, of the entire modem are further included for monolithic realization with practical fabrication techniques. Numerous device types, with practical monolithic compatability, are used in the design of functional blocks with sufficient performances for realization of the transceiver

Особливості позиції Ізраїлю щодо громадянської війни в Сирії. (The peculiarities of Israel’s stand concerning the civil war in Syria.)

У праці висвітлено особливості позиції Ізраїлю щодо гро- мадянської війни в Сирії. Показано основні загрози національній безпеці держави Ізраїль в контексті сирійського конфлікту та можливі шляхи їх попередження та подолання. (This paper analyzes the features of Israel’s position on civil war in Syria. Showed the main threats to the national security of the state of Israel in context of Syrian conflict, possible ways of preventing and overcoming this threats.

Advanced digital modulation: Communication techniques and monolithic GaAs technology

Communications theory and practice are merged with state-of-the-art technology in IC fabrication, especially monolithic GaAs technology, to examine the general feasibility of a number of advanced technology digital transmission systems. Satellite-channel models with (1) superior throughput, perhaps 2 Gbps; (2) attractive weight and cost; and (3) high RF power and spectrum efficiency are discussed. Transmission techniques possessing reasonably simple architectures capable of monolithic fabrication at high speeds were surveyed. This included a review of amplitude/phase shift keying (APSK) techniques and the continuous-phase-modulation (CPM) methods, of which MSK represents the simplest case

Transformacija raspodjele čeličnih proizvoda u Poljskoj i Slovačkoj

Steel industry is one of the most globalized branch, globalization has had the influence on iron ore supply, steel production and distribution as well. In last years, steel products distribution process has changed significantly, because of rising competitiveness due to common world market influence and main global players actions. The paper presents changes in steel products distribution in Poland and Slovakia focusing on main steel producers activity in distribution as well as distributors response on new market situation.Čelična industrija je jedna od najviše globaliziranih grana s utjecajem na opskrbu čeličnih proizvoda i njihovoj raspodjeli. U posljednjim godinama raspodjela čeličnih proizvoda značajno se promijenila glede utjecaja konkurencije u zajedničkom svjetskom tržištu i presudnim globalnim akcijama. Članak daje izmjene u raspodjeli čeličnih proizvoda u Poljskoj i Slovačkoj s naglaskom na najvažnije akcije proizvođača čelika i odgovarajuće raspodjele pri novoj tržišnoj situaciji

Transformation on steel products distribution in Poland and Slovakia

Steel industry is one of the most globalized branch, globalization has had the influence on iron ore supply, steel production and distribution as well. In last years, steel products distribution process has changed significantly, because of rising competitiveness due to common world market influence and main global players actions. The paper presents changes in steel products distribution in Poland and Slovakia focusing on main steel producers activity in distribution as well as distributors response on new market situation

Radio Frequency Identification: Legal Aspects

Radio frequency identification (RFID) is a wireless technology that identifies objects without having either contact or sight of them. Unlike optically read technologies such bar codes, RFID tags can be read despite fog, ice, snow, paint or widely fluctuating temperatures. Additionally, RFID can identify moving objects. Data in an RFID tag is stored in an integrated circuit, and sent to the reader via an antenna. An RFID reader is essentially a radio frequency receiver controlled by a microprocessor or digital signal processor. The reader uses an attached antenna to capture the data transmitted from the tag and sends the information to a computer, where the data is processed

Editors' Choice - Precipitation of Suboxides in Silicon, their Role in Gettering of Copper Impurities and Carrier Recombination

This paper describes a theoretical investigation of the phase composition of oxide precipitates and the corresponding emission of self-interstitials at the minimum of the free energy and their evolution with increasing number of oxygen atoms in the precipitates. The results can explain the compositional evolution of oxide precipitates and the role of self-interstitials therein. The formation of suboxides at the edges of SiO2 precipitates after reaching a critical size can explain several phenomena like gettering of Cu by segregation to the suboxide region and lifetime reduction by recombination of minority carriers in the suboxide. It provides an alternative explanation, based on minimized free energy, to the theory of strained and unstrained plates. A second emphasis was payed to the evolution of the morphology of oxide precipitates. Based on the comparison with results from scanning transmission electron microscopy the sequence of morphology evolution of oxide precipitates was deduced. It turned out that it is opposite to the sequence assumed until now. © 2020 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited

microRNA-141 as a diagnostic and prognos- tic biomarker for prostate cancer in Egyptian population: Pilot study

Introduction: microRNAs are a family of small non protein-coding RNAs. They are involved in posttranscriptional gene regulation of their target genes. The deregulation of microRNAs has been linked to cancer development and tumor progression. The aim of out study was to look for microRNA-141 as a diagnostic and prognostic biomarker for prostate cancer.Patients and methods: The study prospectively recruited 30 patients newly diagnosed with prostate cancer; including 13 and 17 patients without and with metastases, respectively. Another 30 patients without prostate cancer diagnosis were included as a control group. Real-time polymerase chain reaction analysis was done for relative quantification of microRNA-141.Results: The present study showed that microRNA-141 was significantly upregulated in cancerous patients compared to control group. Also it was significantly upregulated in patients with metastatic disease compared to non-metastatic patients. Moreover, it was significantly correlating with serum PSA and Gleason score.Conclusion: Serum microRNA-141 could be a promising diagnostic and prognostic biomarker for prostate cancer and a good indicative of disease aggressiveness