• 전기전자학회논문지
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• 제23권3호
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• pp.941-946
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• 2019

본 논문에서는 LTE(Long Term Evolution) SON(Self Organization Network) 환경에서 PCI(Physical Cell Identification)를 할당하는 방법에 대하여 분석하였다. PCI를 할당하는 방법에 다양한 기법들이 제시되었고 규격에서는 기본적으로 PCI를 할당하는 과정에서 다른 셀과 ID가 '충돌'(Collision) 또는 '혼란'(Confusion)을 일으킬 수 있다는 것을 제시하였다. 따라서 본 논문에서는 LTE 규격에서 제시하는 PCI '충돌', '약한충돌'(Weak Collision) 그리고 '혼란'의 시나리오가 무엇인지 내용을 살펴보았다. 또한, 각 시나리오에 대한 해결 방법으로 셀 중앙적접근과 분산적 접근 방법에 대해 살펴보았다. 논문에서는 최근 연구되고 있는 그래픽 컬러링(Graphic Coloring) 기법에 대한 접근 방법에 대해 살펴보았고 중앙접근적 방법에 대한 전략에 대해 설명하였다.

• 한국정보통신학회논문지
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• 제22권1호
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• pp.196-201
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• 2018

최근 로컬 IoT 네트워크 구축과 관련하여 RPL 프로토콜을 활용하는 다양한 비-인프라 기반 IoT 네트워킹 기법들이 연구 중이다. 특히, RPL 프로토콜은 자율네트워킹과 로컬 네트워크에 존재하는 노드 간 애드혹 경로를 제공하지 못하는 문제를 가지고 있다. 본 논문에서는 비-인프라 기반 IoT 네트워크 구축을 지원하는 자율네트워킹 기법을 제안한다. 제안하는 기법은 저전력 손실 네트워크로 구성된 네트워크 환경에 적용 가능한 자율네트워킹 기법이다. 실험을 통해서 제안한 자율네트워킹 기법의 우수한 성능을 보였다. 특히, 단대단 데이터 발생률과 단대단 지연 측면에서 제안하는 기법의 성능이 우수함을 증명하였다.

• 한국전자통신학회논문지
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• 제17권2호
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• pp.375-386
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• 2022

정보자산 보호가 조직의 중요한 관리 요인으로 인식되면서, 조직들은 정보보안 정책 및 기술 도입을 위한 투자를 높이고 있다. 하지만, 엄격한 정보보안의 적용은 조직원에게 스트레스를 통해 미준수 행동을 일으킬 수 있다. 본 연구의 목적은 정보보안 역할 강화로 인해 형성된 조직원의 스트레스가 자기결정성을 통해 준수 의도에 미치는 매커니즘을 제시하고, 개인조직 적합성을 통해 준수 의도 강화 방안을 제시하는 것이다. 연구는 정보보안 정책을 도입한 기업에 근무하는 조직원을 대상으로 온라인 설문을 하였으며, 475개의 표본을 활용하여 가설검증을 하였다. 첫째, 구조방정식 모형을 적용한 주효과 분석 결과는 역할 스트레스가 자기결정성을 감소하여 준수 의도에 영향을 미쳤다. 둘째, Process 3.1을 적용한 조절 효과 분석 결과는 개인조직 적합성이 자율성, 관계성이 준수 의도에 미치는 영향을 강화하였다. 연구는 조직원의 정보보안 스트레스, 행동 동기의 영향을 확인함으로써, 조직 내부의 정보보안 목표달성 방향을 제언한 측면에서 시사점을 가진다.

• 지식경영연구
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• 제12권1호
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• pp.17-37
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• 2011

This paper is aimed at investigating the influence of the learning organization's structural characteristics, learner's characteristics, and perceived organizational support (POS) on organizational knowledge creation. also the POS is tested as a moderator on the relationship between learner's characteristics including learning goal orientation and learning self-efficacy and organizational knowledge creation. the results are as follows. for main effect hypotheses, both connecting the organization to its environment and establishing systems to capture and share learning system representing learning organization's structural characteristics have significant positive impact on organizational knowledge creation. the POS also has a significant impact on organizational knowledge creation. However, learning goal orientation and learning self-efficacy have not significant impact on organizational knowledge creation. for moderating effect hypothesis, POS moderates the relationship between learning goal orientation and organizational knowledge creation, which means if the POS is high then learning goal orientation has more significant positive impact on it. Based on our findings, we conclude that structural characteristics of learning organization provide organizations with an opportunity of knowledge creation. in particular, interconnectedness of organization with environment and organizational knowledge sharing systems determine the ways of behaving that are related to learning within organizations. however, learner's characteristics did not have a significant effect on organizational knowledge creation, which could be interpreted due to the fact that employees are not motivated to create new knowledge if they are rarely required to involve challenging works, generate new knowledge, or share preexisted knowledge with others.

• 한국항공운항학회지
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• 제23권1호
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• pp.85-95
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• 2015

A responsibility of superior management in an airline has become enormous due to rapid increase of airline's organization and its network. Even though a leadership of superior management is believed to be an important factor, it is almost impossible for management to be responsible for all the areas of an airline organization. This is why leadership should be go down to working level people. Self-leadership means that working level people possess leadership, delegated by their superior persons, and improve their work environment with the leadership as well as related right and responsibility. This paper has tried to find out the components of self-leadership perceived by foreign cabin crews and analyzed the impact of self leadership into airline's organizational effectiveness. Based on empirical research results, this paper would suggest administrative and operational implications of managing foreign cabin crews in K-airline. It was found out foreign cabin crews perceive that self reward and self evaluation have a positive impact on self observation factor. The self observation factor has a significant effect on self goal. The self goal is analyzed as a major factor which results in organizational effectiveness.

• Macromolecular Research
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• 제12권5호
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• pp.528-533
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• 2004

We have prepared amide dendrons having alkyl peripheral units and various focal moieties through a convergent synthetic approach. The amphiphilic properties, due to hydrophilic amide branches and the hydrophobic peripheral units, provide an opportunity for the amide dendrons to self-organize in water. The dendritic architecture itself is also one of the critical factors in the self-organization of the amide dendrons in water. In particular, function-alization was performed at the focal point to elucidate the relationship between the focal functionality and the self-organized structures of the dendritic building blocks in the aqueous phase. The dendron having a short poly(ethylene glycol) monomethyl ether (MeO-PEG) unit (M$\_$n/ =750) as the focal moiety formed a vesicular organization in water. As the size of the hydrophilic focal MeO-PEG increased to M$\_$n/ =2,000 and 5,000, the self-organized structures became rod-type and spherical micelles, respectively. Our observation of multiple morphologies for amide dendrons is in good agreement with previous reports that indicated that the micellar structures changed from vesicles to rod-types and then to spheres upon increasing the size of the hydrophilic moiety of the amphiphiles.

• 수산해양교육연구
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• 제16권2호
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• pp.187-198
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• 2004

The purpose of this study is to provide the basic data to activate the operation of the volunteer activities. The specified subjects for this study are how different is it in the changes of the self-concept and the satisfaction and the intention of the continuance of volunteer activities according to the type of volunteer work and guiding organization for middle school students. For this study, 64 students, the homogeneous ability group, were intentionally assigned in the preliminary inspection of self-concept and 16 students were randomly allocated respectively for 4 groups. The consequences based on the result are as follow: First, it has more influence with the group activities than the individual on the changes in the self-concept. But, there isn't meaningful difference by each guiding organization. Therefore, the school has to provide with activating middle school student's activities by developing various weekly and monthly club volunteer activities. Second, for the satisfaction and the intention of continuance among the guiding organization, it has meaningful difference in the group activities only, not in the individual ones. It gives the ground for the government to provide intensified support to the leaders of the group and grant the incentives to the group of distinguished activities, in the perspective of developing sociality, promoting the group volunteer activities.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 추계학술대회논문집
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• pp.832-835
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• 2002

This paper presents a new approach integrated Case-Based Reasoning with Self. Organization Map(SOM) in diagnosis systems. The causes of faults are obtained by case-base trained from SOM. When the vibration problem of rotating machinery occurs, this provides an exact diagnosis method that shows the fault cause of vibration problem. In order to verify the performance of algorithm, we applied it to diagnose the fault cause of the electric motor.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1735-1740
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• 2005

In this paper, ways of improving the performances of roundabouts under the assumption that the Advanced Vehicle System is proposed. The situation on a road contains uncertainty and complexity caused by different vehicles having different directions and time-varying traffic flow. This sort of system with high uncertainty is called Multi Agent System (MAS). The MAS is a collective system, including numbers of agents and performs high diversity of the configuration as well as it has nonlinear property and complexity. Hence it is difficult to analyze and control the multi-agent system. A roundabout can be considered as an MAS with numbers of moving vehicles. So it must be difficult to use a centralized control technique to all vehicles in an intersection. Therefore, to improve the performances of roundabouts, multi-agents flow control algorithm for vehicles in Roundabouts using 'self-organization' technique is proposed.

• The Journal of the Acoustical Society of Korea
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• 제22권2E호
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• pp.49-55
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• 2003

The modified neural net pattern recognition equations were attempted to apply to speech recognition. The proposed method has a dynamic process of self-organization that has been proved to be successful in recognizing a depth perception in stereoscopic vision. This study has shown that the process has also been useful in recognizing human speech. In the processing, input vocal signals are first compared with standard models to measure similarities that are then given to a process of self-organization in neural net equations. The competitive and cooperative processes are conducted among neighboring input similarities, so that only one winner neuron is finally detected. In a comparative study, it showed that the proposed neural networks outperformed the conventional HMM speech recognizer under the same conditions.