نتایج جستجو برای: global system of mobile communications
تعداد نتایج: 21405206 فیلتر نتایج به سال:
Since their inception, mobile communications have become sophisticated and ubiquitous. However, as the popularity of mobile communications surged in the 1990s, Second Generation (2G) mobile cellular systems such as IS-95 and Global System for Mobile (GSM) were unable to meet the growing demand for more network capacity. At the same time, thanks to the Internet boom, users demanded better and fa...
considering the pace of scientific, technological and cultural developments, one will have no other choice but to learn over a lifetime. mobile learning as a new stage of e-learning development with the potential of using mobile devices, is supposed to be an effective means for lifelong learning. therefore, the purpose of this survey was to analyze the problems of agricultural education system ...
زمینه و هدف : دیابت یک بیماری شایع متابولیک می باشد که برای کنترل عوارض آن باید قند این بیماران کنترل شود. لذا، بیماران اقدام به اندازه گیری قند خون در منزل کرده و اطلاعات را در مراجعه بعدی به اطلاع پزشک می رسانند تا نسبت به ادامه ی درمان تصمیم گیری نماید. مشکلی که در این زمینه وجود دارد عدم دسترسی بیمار به پزشک می باشد که می تواند بسیار خطرناک باشد. لذا بر آن شدیم تا با اختراع یک دستگاه که بتو...
Mobile radio and Internet communications services are penetrating our society at an exponential rate of growth. The Internet is the most important driving force towards establishing a multimedia society. Mobile communication systems add an important capability to our communications society, i.e., mobility. The third generation mobile communications system called IMT-2000 is expected to play an ...
today, the route for economic development in most countries is the same as international open competitive economy. economic institutes well known that supportive public economy belonged on the past and they may compete in the global economy. it is obvious that if they have no competitive potency or not familiar with competition technique, they may be devastated. banking system aims to collect t...
چکیده : نظام انتخاباتی قواعد و چار چوب های به رسمیت شناخته شده ای است که بیانگر چگونگی تبدیل آرای مردم به مناصب و پست های سیاسی است. این نظام انتخابات باید به گونه ای عمل کند که نتیجه آن فراهم شدن مکانیسم و ساز و کار مطلوب و مناسب برای برگزاری انتخابات سالم و رقابتی باشد. به نظر می رسد نظام انتخاباتی جمهوری اسلامی ایران دارای ضعف ها و نواقصی است که به سبب آن ها نمی توان انتخابات مطلوب را برگزا...
the application of e-learning systems - as one of the solutions to the issue of anywhere and anytime learning – is increasingly spreading in the area of education. content management - one of the most important parts of any e-learning system- is in the concern of tutors and teachers through which they can obtain means and paths to achieve the goals of the course and learning objectives. e-learn...
the intelligent transportation system (its) provides wireless and mobile communication between vehicles and infrastructure to improve the safety of transportation and make the journey more enjoyable. this system consists of many fixed and mobile nodes (vehicles, trains, vessels, air planes), wireless and wired telecommunication technologies to exchange information between mobile nodes or betwee...
Global System for Mobile communications (GSM) started to be developed by Europeans when the removal of many European trade barriers (encouraging business travel) intensified the need to provide “communications without boundaries”. In 1982, European Posts and Telecommunications Conference (CEPT) allocated two 25 MHz blocks of channels for a future Pan-European Cellular System. A special group wa...
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