• Journal of Information Processing Systems
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• 제16권4호
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• pp.845-858
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• 2020

This paper proposes a modified end-to-end secure low energy adaptive clustering hierarchy (ME-LEACH) algorithm for enhancing the lifetime of a wireless sensor network (WSN). Energy limitations are a major constraint in WSNs, hence every activity in a WSN must efficiently utilize energy. Several protocols have been introduced to modulate the way a WSN sends and receives information. The end-to-end secure low energy adaptive clustering hierarchy (E-LEACH) protocol is a hierarchical routing protocol algorithm proposed to solve high-energy dissipation problems. Other methods that explore the presence of the most powerful nodes on each cluster as cluster heads (CHs) are the sparsity-aware energy efficient clustering (SEEC) protocol and an energy efficient clustering-based routing protocol that uses an enhanced cluster formation technique accompanied by the fuzzy logic (EERRCUF) method. However, each CH in the E-LEACH method sends data directly to the base station causing high energy consumption. SEEC uses a lot of energy to identify the most powerful sensor nodes, while EERRCUF spends high amounts of energy to determine the super cluster head (SCH). In the proposed method, a CH will search for the nearest CH and use it as the next hop. The formation of CH chains serves as a path to the base station. Experiments were conducted to determine the performance of the ME-LEACH algorithm. The results show that ME-LEACH has a more stable and higher throughput than SEEC and EERRCUF and has a 35.2% better network lifetime than the E-LEACH algorithm.

• International Journal of Internet, Broadcasting and Communication
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• 제7권1호
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• pp.30-35
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• 2015

The most important factor within the wireless sensor network is to have effective network usage and increase the lifetime of the individual nodes in order to operate the wireless network more efficiently. Therefore, many routing protocols have been developed. The LEACH protocol presented by Wendi Hein Zelman, especially well known as a simple and efficient clustering based routing protocol. However, because LEACH protocol in an irregular network is the total data throughput efficiency dropped, the stability of the cluster is declined. Therefore, to increase the stability of the cluster head, in this paper, it proposes a stochastic cluster head selection method for improving the LEACH protocol. To this end, it proposes a SH-LEACH (Stochastic Cluster Head Selection Method-LEACH) that it is combined to the HEED and LEACH protocol and the proposed algorithm is verified through the simulation.

• 한국응용곤충학회지
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• 제54권2호
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• pp.63-71
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• 2015

한국산 깨알물방개속(Laccophilus Leach)의 분류학적 재검토를 수행하였다. 한국에서 기록된 5종 중에서 L. hyalinus (De Geer), L. lewisius Sharp (줄깨알물방개), L. minutus ($Linn{\acute{e}}$) (대륙깨알물방개)는 각각 L. vagelineatus Zimmermann (얼룩깨알물방개), L. lewisioides Brancucci (줄무늬깨알물방개)(신칭) and L. difficilis Sharp (깨알물방개)의 오동정이다. 각 종에 대한 외형 사진, 주사전자현미경 사진, 검색표 및 식별형질을 제시한다.

• 한국응용곤충학회지
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• 제55권3호
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• pp.205-214
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• 2016

한국산 점박이물땡땡이속(Berosus Leach)의 분류학적 재검토를 수행한 결과, 1미기록종[Berosus (E.) spinosus (Steven) (가시점박이물땡땡이: 신칭)] 포함 총 2아속 4종이 발견되었다[Berosus (Berosus) japonicus Sharp (새가슴물땡땡이), Berosus (Berosus) punctipennis Harold (점박이물땡땡이), Berosus (Enoplurus) lewisius Sharp (뒷가시물땡땡이)]. 또한, 이전의 한국기록 B. (B.) puchellus MacLeay (남쪽점박이물땡땡이)는 B. (E.) lewisius Sharp의 오동정이다. 각 종에 대한 성충 외형사진, 미세형질 주사전자현미경 사진 및 식별형질과 검색표를 제시한다.

• International Journal of Internet, Broadcasting and Communication
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• 제7권1호
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• pp.62-65
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• 2015

Wireless Sensor Network consists of several sensor nodes, these nodes loss some of their energy after the process of communication. So an energy efficient approach is required to improve the life of the network. In case of broadcast network, LEACH protocol uses an aggregative approach by creating cluster of nodes. Now the major concern is to built such clusters over WSN in an optimized way. This work presents the improvement over LEACH protocol. Hence we have different work environments where the network is having different capacities. The proposed work shows how the life time of the network will improve when the number of nodes varies within the network.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2004년도 The 2004 KSPP Annual Meeting & International Symposium
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• pp.25.1-26.1
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• 2004

See Full Text

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 1999년도 임시총회 및 추계 학술발표회
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• pp.57.2-57
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• 1999

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2002년도 총회 및 추계학술발표회
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• pp.76.2-77
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• 2002

• International journal of advanced smart convergence
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• 제3권2호
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• pp.1-5
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• 2014

Sensor nodes depend on batteries for energy source in Wireless Sensor Networks (WSNs). Low Energy Adaptive Clustering Hierarchy (LEACH) is a representative cluster-based routing protocol designed to ensure energy use efficiency whereas the virtual cluster exchange routing (VCR) information only with its closest node to build a network. In this paper, a protocol scheme was proposed wherein member nodes are designed to compare the currently sensed data with the previously sensed one and to switch to sleep mode when a match is achieved. The design is to help improve the transmission energy efficiency too.

• 기계와재료
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• 제22권3호
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• pp.80-87
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• 2010

본 연구는 현재 전기설비 가운데 주요부위의 절연상태를 지속적으로 감시하기위한 여러 제약조건 내에서 효과적인 무선센서네트워크를 적용하는 것이다. 따라서 본 연구에서는 전기설비에서 발생하는 여러 환경인자 가운데 일정량의 노화(열화)가 진행되었을 E 발생할 수 있는 공기 중 전기 코로나방전을 감시하고 그와 관련된 환경인자를 지속적으로 감시하기 위한 네트워크로 무선센서네트워크를 조사하고 적용대상에 맞는 네트워크 알고리즘을 분석하였다. 선정한 방식의 라우팅 알고리즘을 유사한 방식을 사용하는 알고리즘과 동일한 조건에서 시뮬레이션을 수행한 결과 가장 적합하다고 판단되는 LEACH-C 라우팅 알고리즘을 확인할 수 있었다.