• Korean journal of applied entomology
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• v.52 no.3
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• pp.243-248
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• 2013

This study was conducted to understand the settlement process of Ascotis selenaria larvae into citrus orchards with respect to oviposition site and analysis of the spatial distribution pattern of the larvae. A. selenaria eggs were not found on citrus trees in field and green house, but not on citrus trees in the field. A. selenaria larvae showed a significant clump distribution in the greenhouse. In the open citrus field, the index of dispersion was around 1.0 in most cases, with a weak clumping degree. However, the d-statistic was between -1.96 and 1.96, indicating a statistically significant random distribution. In addition, the Green's index (a clumping index) was very low in all cases, even though the clump distribution was accepted. for most samples, the probability distribution of larval frequency in the field satisfied the probability distribution functions of Poisson (random pattern) and the negative binomial (clump pattern) distribution. In addition, the temporal distribution of the larvae in the open field showed a pattern which was formed by colonizers from outside oviposition sites. Further, the difference in larval spatial distribution between field and greenhouse orchards was discussed.

• Journal of the Korean Society of Marine Environment & Safety
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• v.19 no.2
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• pp.207-212
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• 2013

In this study, distributed the ship's Centralized Air Conditioning System the way an individual to replace the air conditioning system by using Air-cooled air conditioner. Research results, Individually separated air conditioning system complement the heat source control and thermal efficiency problems and improves the efficiency of the device was confirmed. In addition, under the same conditions refrigeration capacity and coefficient of performance of the device, an average of about 3 %, 23 ~ 26 %, higher, Chilled Water Plants Compressor power consumption is about 12 % lower. Also while heating under the same conditions, power consumption is about 33.5 % lower. Therefore Individually Separated Air Conditioning System greatly contributed to the improved performance of the device and living spaces for comfortable temperature and humidity control as well as heating source could be obtained.

• Journal of the Korean Geographical Society
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• v.32 no.4
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• pp.575-584
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• 1997

So how can we develop balanced growth in our country? The national development policy of our hovemment over the past 30 years has lead to the corpulence of Seoul at the expense of the provinces. Now ironically there are policy measures introduced to control the over-expansion of Seoul. Yet the current hardware stategies to control the center requires an additional sofware stategy to create a nationwide balance for development. The Regional Elite Quota System is one such sofware stategy which can adjust the unbalanced distribution of gifted student across the national university deucation system. One obvious solution that should be utillzed is the incredible enthusiasm for high education that exists in this country, perhaps the highest in the world. This has been the backbone of our national development and should be hamessed as a catalyst to produce more balanced national growth.

• 소프트웨어세계
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• s.3
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• pp.69-72
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• 1997

• The Korea Swine Journal
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• v.29 no.4 s.332
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• pp.176-181
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• 2007

• Journal of Information Management
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• v.17 no.3
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• pp.33-45
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• 1984

• The KIPS Transactions:PartA
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• v.9A no.1
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• pp.45-52
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• 2002

This paper proposes the fuzzy closed RCMP queueing network model using fuzzy set theory for the performance evaluation of centralized distributed processing system with ambiguous system factors in the network environments. This model can derive the measures for system performances such as the job spending time, the system throughput, average job number and server utilizations using fuzzy mean value analysis which can process the fuzzy factors. Computer simulation has been performed centralized distributed system with fuzzy service requirement time for verifying the effectiveness of derived equations of performance evaluation according to the numbers of clients, and the results were analyzed. The proposed model provides more and flexible realistic than performance evaluation of conventional method when we evaluated system performance with ambiguous factors.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.10B
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• pp.855-864
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• 2008

Optical link techniques compensating chromatic dispersion and nonlinear effects, which affect distortion of optical signals, generated in single mode fiber are investigated through computer simulation and design rule of these link techniques is proposed for implementation of wideband and long-haul WDM ($24{\times}40$ Gbps) transmission system. The optical link consist of dispersion management (DM) compensating the cumulated dispersion through total transmission line and optical phase conjugation in middle of total transmission line for compensating distorted signals by frequency inversion. DM schemes considered in this research are lumped DM and inline DM. It is confirmed that eye opening penalty (EOP) of overall WDM channels are more improved than those in WDM transmission systems with only optical phase conjugator (OPC), if DM is additionally applied to these systems. And, design rule in both DM schemes are proposed by using effective residual dispersion range. It is confirmed that inline DM is better than lumped DM in the improving EOP of total WDM channels and in effective residual dispersion range.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.31-34
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• 2000

워크플로우 시스템은 다수의 클라이언트 및 서버가 연동하는 분산 시스템으로서 주어진 상황에 따라 구성 요소를 다양한 방식으로 분산시킬 수 있다. 본 논문에서는 워크플로우 제어를 클라이언트가 주도하는 형태와 서버가 주도하는 형태로 양분하여 장단점을 비교한다. 또한 클라이언트 주도형을 워크플로우 엔진을 배치하는 방식에 따라, 다시 중앙 집중형과 분산 처리형으로 구분한다. 이러한 프로세스 구조의 대안 분류 및 비교는 주어진 상황에서 최적의 워크플로우 프로세스 구조를 설계하는 데 필요한 지침을 제공한다.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04a
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• pp.214-216
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• 2000

분산 네트워크 환경에서 단절점의 존재는 신뢰성을 떨어뜨리는 주요한 요인이며, 통신 트래픽의 부하가 집중될 수 있는 지점이다. 본 논문에서는 분산 이동 컴퓨팅 환경을 갖는 네트워크상에서 분산 깊이 우선 탐색 방법을 이용하여 단절점을 찾는 효율적인 방법을 제안 한다. 시작 노드는 단절점을 발견하기 위한 이동 에이전트를 인접한 노드에 보내고, 파견된 이동 에이전트는 네트워크상의 각 노드들을 차례로 방문하여 깊이 우선 번호를 기본으로 하여 단절점을 찾게 된다.