Development of Internet Television Broadcasting and Satisfaction in Internet Broadcasting

Television and broadcasting technology has been constantly developing and renewing since its discovery. When developments in electronic and internet infrastructure were added to these developments, a new process emerged in television broadcasting. These systems, called IPTV or Internet TV, have become global systems with millions of members worldwide. Members can watch TV series, documentaries and movies as much as they want, wherever and whenever they want, on all screens connected to the internet. It can play, stop, and continue watching broadcasts at any time. In this study, the possibilities of Internet TV broadcasting are examined in various aspects and satisfaction research is conducted for Netflix users. The purpose of the study is to measure the overall satisfaction of people who are members of Netflix. Questionnaire Method was used to obtain data in the research. The questionnaire consists of 15 questions and was developed by the researcher. The universe of the research is students of Akdeniz University, Faculty of Communication in Turkey Its sample is 89 students representing the universe. The students were determined by the Easy Sampling method. SPSS statistics program was used to analyze the obtained data. Reliability test, Independent t test, anova test, frequency, percentage and average scores were used to evaluate the data.

Modeling Effectiveness of Testing Strategies to Prevent Coronavirus Disease 2019 (COVID-19) in Nursing Homes—United States, 2020

Background Identifying asymptomatic individuals early through serial testing is recommended to control coronavirus disease 2019 (COVID-19) in nursing homes, both in response to an outbreak (“outbreak testing” of residents and healthcare personnel) and in facilities without outbreaks (“nonoutbreak testing” of healthcare personnel). The effectiveness of outbreak testing and isolation with or without nonoutbreak testing was evaluated. Methods Using published SARS-CoV-2 transmission parameters, the fraction of SARS-CoV-2 transmissions prevented through serial testing (weekly, every 3 days, or daily) and isolation of asymptomatic persons compared with symptom-based testing and isolation was evaluated through mathematical modeling using a Reed-Frost model to estimate the percentage of cases prevented (ie, “effectiveness”) through either outbreak testing alone or outbreak plus nonoutbreak testing. The potential effect of simultaneous decreases (by 10%) in the effectiveness of isolating infected individuals when instituting testing strategies was also evaluated. Results Modeling suggests that outbreak testing could prevent 54% (weekly testing with 48-hour test turnaround) to 92% (daily testing with immediate results and 50% relative sensitivity) of SARS-CoV-2 infections. Adding nonoutbreak testing could prevent up to an additional 8% of SARS-CoV-2 infections (depending on test frequency and turnaround time). However, added benefits of nonoutbreak testing were mostly negated if accompanied by decreases in infection control practice. Conclusions When combined with high-quality infection control practices, outbreak testing could be an effective approach to preventing COVID-19 in nursing homes, particularly if optimized through increased test frequency and use of tests with rapid turnaround.

Предельные совместные распределения статистик трех критериев пакета NIST

Найдены совместное распределение и предельное совместное распределение статистик следующих критериев пакета NIST: «Monobit Test», «Frequency Test within a Block» и «Cumulative Sums Test» в случае, когда исследуемая последовательность имеет распределение Бернулли. В случае, когда в критерии «Frequency Test within a Block» используются два блока, найдены попарные ковариации данных статистик.

Предельные совместные распределения статистик четырех критериев пакета NIST

Найдено предельное совместное распределение статистик следующих критериев пакета НИСТ: «Monobit Test», «Frequency Test within a Block», «Runs Test» и обобщения критерия шаблонов «Non-overlapping Template Matching Test» в ситуации, когда исследуемая последовательность является бернуллиевской с параметром $p$. Отдельно рассматривается случай $p=\frac12 $. Установлены необходимые и достаточные условия асимптотической некоррелированности, а также необходимые и достаточные условия асимптотической независимости рассматриваемых статистик.

Simulation Tool for Cable Design

This chapter is an updated, enhanced, and expanded paper previously published in IJMMME. An attenuation-based mathematical model and computational tool for communication cable design is presented in the chapter. The relationship derived for the model creation connects attenuation with the following parameters of cable design and testing: copper wire, aluminum and insulation thicknesses, cable impedance, test frequency, and lay length. The expression found from numerous measurement data was used to simulate the Monte Carlo prediction of attenuation in the cable. To realize the simulations, a life script and regular MATLAB script programs were developed. The programs produce a special graphical user interface suitable for non-programmers, cable engineers, and technicians. Results of calculations obtained with the developed tool were verified by experiments and indicate that the tool can be used to design cables with optimal parameters.