منابع مشابه
Effects of nighttime computer and television use
This descriptive, cross-sectional study was based on subjective questionnaires that assessed nighttime habits of television viewing and Internet use during weekdays and perceived sleep quality among university students. Sleep perception was measured using the Pittsburgh Sleep Quality Index (PSQI). The study group comprised 710 university students aged 17-25 years. Analysis of sleep perception i...
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در سالهای اخیر،اختلالات کیفیت توان مهمترین موضوع می باشد که محققان زیادی را برای پیدا کردن راه حلی برای حل آن علاقه مند ساخته است.امروزه کیفیت توان در سیستم قدرت برای مراکز صنعتی،تجاری وکاربردهای بیمارستانی مسئله مهمی می باشد.مشکل ولتاژمثل شرایط افت ولتاژواضافه جریان ناشی از اتصال کوتاه مدار یا وقوع خطا در سیستم بیشتر مورد توجه می باشد. برای مطالعه افت ولتاژ واضافه جریان،محققان زیادی کار کرده ...
15 صفحه اولDigital Television Archives Combining Computer Technology and Video
Television archives play an important in giving their users easy access to the huge amount of video informa tion that have been broadcast In this paper we discuss some of the problems faced today and we discuss how digital video and advances in computer technology can be used to overcome some of these problems The pa per also gives a short description of digital television archive prototype dev...
متن کاملMedia Multitasking Behavior: Concurrent Television and Computer Usage
Changes in the media landscape have made simultaneous usage of the computer and television increasingly commonplace, but little research has explored how individuals navigate this media multitasking environment. Prior work suggests that self-insight may be limited in media consumption and multitasking environments, reinforcing a rising need for direct observational research. A laboratory experi...
متن کاملPerformance Evaluation and Computer Simulation of ATSC Digital Television
This paper addresses the evaluation of the performance of Advanced Television Systems Committee digital television. The evaluation is carried out through a simulated digital television system using matlab with simulink .The ATSC digital television standard accommodate a system designed to transmit high-quality video and audio, and ancillary data within a single 6-MHz terrestrial television broa...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1970
ISSN: 1884-9644
DOI: 10.3169/itej1954.24.583