نتایج جستجو برای: sink location

تعداد نتایج: 239433  

2013
avdesh kumar Sharma Anand Rajavat

Wireless sensor network (WSN) consists of sensors for measuring and gathering data in a variety of environments. These sensors, with the size and battery constraints, usually have limited transmission ranges due to the low-power wireless radio transceivers. In a sensor network, sensed data should be collected at a centralized location, called sink, for processing and analysis. With limited tran...

Journal: :American journal of infection control 2015
Caroline Zellmer Rebekah Blakney Sarah Van Hoof Nasia Safdar

Hand hygiene with soap and water after the care of a patient with Clostridium difficile infection is essential to reduce nosocomial transmission in an outbreak situation. Factors that may pose barriers to user completion of infection prevention measures, such as hand hygiene, are of interest. We undertook a quantitative study to evaluate the relationship between sink location and compliance wit...

2014
Li Qing-hua Gui Wei-hua Chen Zhi-gang

In multihop data collection sensor network, nodes near the sink need to relay on remote data and, thus, have much faster energy dissipation rate and suffer from premature death. This phenomenon causes energy hole near the sink, seriously damaging the network performance. In this paper, we first compute energy consumption of each node when sink is set at any point in the network through theoreti...

2013
Izzet F. Senturk Kemal Akkaya

Mobile Data Collectors (MDCs) can be employed to provide intermittent connectivity in partitioned Wireless Sensor Networks (WSNs). Typically, an MDC serves multiple partitions to collect their sensed data and relay it to the sink node if the sink is in one of the served partitions. If not, then the data needs to be passed to another MDC serving the sink partition at a certain rendezvous locatio...

Journal: :IACR Cryptology ePrint Archive 2008
Roberto Di Pietro Luigi V. Mancini Claudio Soriente Angelo Spognardi Gene Tsudik

Some sensor network settings involve disconnected or unattended operation with periodic visits by a mobile sink. An unattended sensor network operating in a hostile environment can collect data that represents a high-value target for the adversary. Since an unattended sensor can not immediately off-load sensed data to a safe external entity (such as a sink), the adversary can easily mount a foc...

2005
Dong Liu Poh-Seng Lee Suresh V. Garimella

The onset of nucleate boiling in the flow of water through a microchannel heat sink was investigated. The microchannels considered were 275 lm wide by 636 lm deep. Onset of nucleate boiling was identified with a high-speed imaging system and the heat flux at incipience was measured under various flow conditions. An analytical model was developed to predict the incipient heat flux as well as the...

Journal: :CoRR 2017
Xiaoming Sun Jialin Zhang Zhijie Zhang

An orientation of a grid is called unique sink orientation (USO) if each of its nonempty subgrids has a unique sink. Particularly, the original grid itself has a unique global sink. In this work we investigate the problem of how to find the global sink using minimum number of queries to an oracle. There are two different oracle models: the vertex query model where the orientation of all edges i...

2017
H. Carlsen

The efficiency of the ideal stirling cycle assumes, that the cylinder volumes are isothermal and that the temperatures in the cylinder volumes are identical to the temperatures in the heat sink and the heat source. The efficiency is then identical to the efficiency of the Carnot cycle. However, in a real stirling machine the cylinder volumes are nearly adiabatic instead of isothermal, and the h...

Journal: :IJIPT 2011
Xiao Chen Qijun Gu Zhen Jiang Jie Wu

In this paper, we propose several novel fast converging mobility control protocols to achieve optimal deployment for streaming data flows in wireless sensor networks (WSNs). We also identify a unique sink privacy issue in mobility control protocols and propose a new privacy-preserving scheme which can be integrated into mobility control protocols to protect the sink. The simulation and performa...

Journal: :علوم گیاهان زراعی ایران 0
عادل سی و سه مرده استادیار دانشگاه کردستان حسین رنجبر بلخکانلو دانشجوی کارشناسی ارشد دانشگاه کردستان یوسف سهرابی استادیار دانشگاه کردستان بهمن بهرام نژاد استادیار دانشگاه کردستان

in order to investigate of the effects of water stress on seed yield and gas exchange and to evaluate the relationship between source and sink in sunflower azargol variety, a split-plot factorial field experiment was conducted in 2008. in this experiment, water stress (no irrigation from 30 days after sowing till ripening) and irrigation (irrigation at -3 bar soil water potential) were consider...

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