نتایج جستجو برای: ground coverage

تعداد نتایج: 226181  

Journal: :CoRR 2017
Mohammad Mahdi Azari Fernando Rosas Alessandro Chiumento A. Ligata Sofie Pollin

Aerial base stations are a promising technology to increase the capabilities of the existing communication networks. However, the existing analytical frameworks do not sufficiently characterize the impact of ground interferers on the aerial base stations. In order to address this issue, we model the effect of interference coming from the coexisting ground networks on the aerial link, which coul...

ژورنال: سلامت و محیط زیست 2010
منظم, محمد رضا, مومن بالله فرد, سمانه, نادرزاده, مهدیه, نصیری, پروین,

Backgrounds and Objectives: There is a considerable notice in the use of noise barriers in recent years. Noise barriers as a control noise solution can increase the insertion loss to protect receivers. This paper presents the results of an investigation about the acoustic efficiency of primitive root sequence diffuser (PRD) on environmental single T-shape barrier.Materials and Methods: A 2D bou...

Journal: :Eurasip Journal on Wireless Communications and Networking 2022

Abstract As UAV Internet of things applications continue to grow, so does interest in the development air-to-ground (ATG) systems, which can effectively expand communication system coverage. To maximize utilization frequency resources, ATG adopts reuse with 5G on ground. This research studies co-channel interference between and at 3.5 GHz as well neighboring channel C-band fixed satellite servi...

Journal: :مجله تحقیقات سلامت 0
عزیزالله دهقان azizallah dehghan نرگس خانجانی narges khanjani روح الله زحمتکش rouhollah zahmatkesh

introduction: immunization is one of the most important health programs in first level prevention and is also one of the most cost-effective prevention programs in the entire world. this study evaluates the situation of immunization in fewer than one year old afghan refugee children in kerman, iran. materials and methods: this was a cross-sectional study. data was extracted from the records of ...

Journal: :IEEE Communications Magazine 2022

Low Earth orbit (LEO) satellite plays an indispensable role in the equal access network because of its low latency, large capacity, and seamless global coverage. For such unprecedented extensive irregular system, stochastic geometry (SG) is a suitable research method. The SG model can not only cope with increasing scale, but also accurately analyze estimate network's performance. Several standa...

1998
Chai-Keong Toh

IEEE Network • September/October 1998 he global information infrastructure (GII) of the United States has included satellite asynchronous transfer mode (SATM) as part of the communications infrastructure to support global mobile communications, information transport and access. The Telecommunications Industry Association (TIA) has recently formed an SATM group to study the various technical iss...

2002
Ad J. van de Goor Ivo Schanstra

The way address sequences and data patterns appear on the outside of a memory may differ from their internal appearance; this effect is referred to as scrambling, which has a large impact on the effectiveness of the used tests. This paper presents an analysis of address and data scrambling for memory chips, at the layout and at the electrical level. A method is presented to determine the data b...

2003
Angela Krstic Jing-Jia Liou Kwang-Ting Cheng Li-C. Wang

A structurally testable delay fault might become untestable in the functional mode of the circuit due to logic or timing constraints or both. Experimental data suggests that there could be a large difference in the number of structurally and functionally testable delay faults. However, this difference is usually calculated based only on logic constraints. It is unclear how this difference would...

1998
Dennis D. Boos

Students invariably ask the question \How large does n have to be for Z and t intervals to give appropriate coverage probabilities?" In this article we review the role of p 1 (X)= p n, where p 1 (X) is the skewness coeecient of the random sample, in the answer to this question. We also comment on the opposite eeect that p 1 (X) has on the behavior of t intervals compared to Z intervals. Finally...

Journal: :international journal of health policy and management 2015
guilhem fabre

investments in the extension of health insurance coverage, the strengthening of public health services, as well as primary care and better hospitals, highlights the emerging role of healthcare as part of china’s new growth regime, based on an expansion of services, and redistributive policies. such investments, apart from their central role in terms of relief for low-income people, serve to reb...

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