نتایج جستجو برای: lpi
تعداد نتایج: 699 فیلتر نتایج به سال:
To achieve the important tactical requirement of low probability of intercept (LPI) in the complex radar network, dynamically controlling the emission of the radars is very necessary. A novel radar dwelling time control strategy based on an interacting multiple model algorithm is presented in this paper, which controls the dwelling time of radar according to predicted covariance matrix during t...
امروزه با استفاده از مدل های پیش بینی عددی وضع هوا و شناخت بیشتر پدیده های مخرّب جوی می توان از خسارت های ناشی از آنها جلوگیری کرد. یکی از بلایای جوی و اقلیمی، آذرخش است که شبیه سازی های صریح از فرآیندهای در مقیاس ابر می توانند به پیش بینی رخداد آن منجر شوند. در این پژوهش، با استفاده از شبیه سازی های جریان های بالارو و پارامترهای خردفیزیکی ابر شامل نسبت های اختلاط یخ، برف و گویچه برف به کمک مدل ...
The use of signal processing techniques to protect wireless transmissions is proposed as a way to secure wireless networks at the physical layer. This approach addresses a unique weakness of wireless networks whereby network traffic traverses a public wireless medium making traditional boundary controls ineffective. Specifically, a randomized array transmission scheme is developed to guarantee ...
Over the last decade, laser facilities with peak intensity I > 5 ∗ 10 W cm2 have pushed the limits of ion acceleration [1], x-ray generation [2], and laboratory astrophysics [3] to exciting new extremes. The essential element for all of these phenomena is the population of relativistic electrons produced by the laser-plasma interaction (LPI), often in the preformed plasma created by amplified s...
A varus-producing distal femoral osteotomy (DFO) is an effective technique for the treatment of lateral patellar instability (LPI) in patients with concomitant moderate to severe valgus malalignment. Patellar maltracking and subluxation are corrected via neutralization of some of the laterally directed forces on the patella due to the valgus deformity. This can be accomplished with a distal fem...
Purpose This study investigated the behaviors of leaders across economically-distressed regions within four countries (Ethiopia, India, Pakistan, Philippines), whether the impact of their behavior would be differentially affected by culture, and the psychometric properties of the Leadership Practices Inventory (LPI) in this setting. Design Health care leaders and their constituents were surveye...
IEEE802.3az working group has recommended LPI based Energy Efficient Ethernet standard in order to efficiently reduce unnecessary waste of energy that might occur while there is no data to be transmitted. This paper proposes an enhanced LPI control mechanism to improve energy efficiency between terminal equipment and Ethernet switch in an EEE environment. The proposed mechanism measures the amo...
In this paper, the problem of low probability of intercept (LPI)-based radar waveform design for distributed multiple-radar system (DMRS) is studied, which consists of multiple radars coexisting with a wireless communication system in the same frequency band. The primary objective of the multiple-radar system is to minimize the total transmitted energy by optimizing the transmission waveform of...
Lysinuric protein intolerance (LPI) is a rare autosomal recessive disorder caused by mutations in the SLC7A7 located on the chromosome 14q11.2. LPI is most prevalent in Finland (1:50,000), Northern Japan (1:60,000) and Italy. Cases have also been reported in Spain and the United States. Here we report two siblings of Mexican descent. The older child was diagnosed at the age of three with severe...
This work presents a solution-processed gravure printed antenna on robust transparent nanopaper for potential Radio Frequency Identification (RFID) application. The nanopaper, having excellent dimensional stability in water, was obtained by glutaraldehyde treatment with hydrochloric (HCl) acid as a catalyst. For the first time, a device consisting of RF components for RFIDs was printed on stabl...
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