نتایج جستجو برای: sensor network

تعداد نتایج: 823415  

ژورنال: محاسبات نرم 2013
رحیمی نسب, مجید, رضایی نژاد, مهدی, موسوی, سید عبدالمجید,

At the present, energy aware routing is one of the most important research topics in wireless sensor networks. Increasing network lifetime is the most challenging need in these networks. In this study, in order to increase network lifetime, we aim to introduce a harmony search algorithm as a successful meta-heuristic algorithm for routing in the wireless sensor networks. In customizing the algo...

Journal: :isecure, the isc international journal of information security 0
t. y. rezapour department of computer engineering, university of guilan, rasht, iran department of information technology, ports and maritime organization, tehran, iran r. ebrahimi atani department of computer engineering, university of guilan, rasht, iran m. s. abolghasemi department of computer engineering, university of guilan, rasht, iran

wireless sensor networks (wsns) have many applications in the areas of commercial, military and environmental requirements. regarding the deployment of low cost sensor nodes with restricted energy resources, these networks face a lot of security challenges. a basic approach for preparing a secure wireless communication in wsns, is to propose an efficient cryptographic key management protocol be...

Journal: :iranian journal of oil and gas science and technology 0
hamidreza mousavi m.s. student, department of instrumentation & automation engineering, petroleum university of technology, ahwaz, iran. mehdi shahbazian petroleum university of technology nosrat moradi iranian offshore oil company

recently different approaches have been developed in the field of sensor fault diagnostics based on auto-associative neural network (aann). in this paper we present a novel algorithm called self reconstructing auto-associative neural network (s-aann) which is able to detect and isolate single faulty sensor via reconstruction. we have also extended the algorithm to be applicable in multiple faul...

ژورنال: پیاورد سلامت 2018
رضایی, ثریا, صفائی, علی اصغر, محمدزاده, نیلوفر,

Background and Aim: Nowadays, one of the most important areas of application of information technology in the health sector is monitoring patients' condition. Recently utilization of body area sensor networks in healthcare had significant advances. The purpose of this article is to examine the applications of wireless health sensor networks in the field of health.  Materials and Methods: This ...

Journal: :journal of algorithms and computation 0
s. saadatmand university of new south wales, college of engineering, department of computer science, sydney, australia. d. moazzami university of tehran, college of engineering, faculty of engineering science a. moeini university of tehran, college of engineering, faculty of engineering science

in this paper we proposed a cellular automaton based local algorithm to solve the autonomously sensor gathering problem in mobile wireless sensor networks (mwsn). in this problem initially the connected mobile sensors deployed in the network and goal is gather all sensors into one location. the sensors decide to move only based on their local information. cellular automaton (ca) as dynamical sy...

Journal: :journal of ai and data mining 2015
a. ghaffari s. nobahary

wireless sensor networks (wsns) consist of a large number of sensor nodes which are capable of sensing different environmental phenomena and sending the collected data to the base station or sink. since sensor nodes are made of cheap components and are deployed in remote and uncontrolled environments, they are prone to failure; thus, maintaining a network with its proper functions even when und...

In this paper we focus on the application of reinforcement learning to obstacle avoidance in dynamic Environments in wireless sensor networks. A distributed algorithm based on reinforcement learning is developed for sensor networks to guide mobile robot through the dynamic obstacles. The sensor network models the danger of the area under coverage as obstacles, and has the property of adoption o...

Journal: :journal of advances in computer engineering and technology 2015
samaneh nazari dastjerdi hamid haj seyyad javadi

network sensors consist of sensor nodes in which every node covers a limited area. the most common use ofthese networks is in unreachable fields.sink is a node that collects data from other nodes.one of the main challenges in these networks is the limitation of nodes battery (power supply). therefore, the use oftopology control is required to decrease power consumption and increase network acce...

Journal: :journal of ai and data mining 2013
mohammad ahmadi livani mahdi abadi meysam alikhany meisam yadollahzadeh tabari

detecting anomalies is an important challenge for intrusion detection and fault diagnosis in wireless sensor networks (wsns). to address the problem of outlier detection in wireless sensor networks, in this paper we present a pca-based centralized approach and a dpca-based distributed energy-efficient approach for detecting outliers in sensed data in a wsn. the outliers in sensed data can be ca...

Journal: :journal of advances in computer research 0

routing in wireless sensor networks (wsns) is a very challenging task due to the large number of nodes, their mobility and lack of proper infrastructure. since the sensors are battery powered devices, energy efficiency is considered as one of the main factors in designing routing protocols in wsns. most of energy-aware routing protocols are mere energy savers that attempt to decrease the energy...

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