• KSII Transactions on Internet and Information Systems (TIIS)
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• 제18권1호
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• pp.211-232
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• 2024

In this paper, we consider the resource allocation and offloading decisions of device-to-device (D2D) cooperative UAV-assisted mobile edge computing (MEC) system, where the device with task request is served by unmanned aerial vehicle (UAV) equipped with MEC server and D2D device with idle resources. On the one hand, to ensure the fairness of time-delay sensitive devices, when UAV computing resources are relatively sufficient, an optimization model is established to minimize the maximum delay of device computing tasks. The original non-convex objective problem is decomposed into two subproblems, and the suboptimal solution of the optimization problem is obtained by alternate iteration of two subproblems. On the other hand, when the device only needs to complete the task within a tolerable delay, we consider the offloading priorities of task to minimize UAV computing resources. Then we build the model of joint offloading decision and power allocation optimization. Through theoretical analysis based on KKT conditions, we elicit the relationship between the amount of computing task data and the optimal resource allocation. The simulation results show that the D2D cooperation scheme proposed in this paper is effective in reducing the completion delay of computing tasks and saving UAV computing resources.

• 비교교육연구
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• 제24권3호
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• pp.1-23
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• 2014

본 연구는 고교 다양화 및 특성화고 육성 정책으로 인해 상대적으로 불이익을 받고 있는 일반고의 교육역량 강화 필요성을 인식하고, 현재 일반고가 안고 있는 문제점 등을 진단하여 장 단기적인 관점에서 경상북도의 일반고 육성방안을 다각적으로 마련 제시하는 데 그 목적이 있다. 이를 위해 먼저, 박근혜정부의 교육정책기조와 경상북도 교육정책 방향, 경북지역 일반고 교육현황, 일반고 교육역량 강화방안의 주요 내용 등을 살펴보았다. 교육부의 일반고 교육역량 강화방안에 기초하여 제시된 경상북도 일반고 교육역량 제고의 주요 추진과제로는 (1) 진로별 맞춤형 교육과정 편성 운영의 자율성 확대, (2) 일반고 학생을 위한 진로직업 교육 확대, (3) 위기학생 지원 프로그램 강화, (4) 일반고 High-up 프로그램 지원 강화 등을 들 수 있다. 이와 같은 일반고 교육역량 강화를 위한 주요 추진과제들이 학교현장에서 성공적으로 정착 운영되기 위해서는 개별 일반고의 지역적 환경과 특성을 고려한 학교단위 책임경영제의 정착, 학교경영에 있어 총체적 질 관리 적용, 그리고 협동적 학교조직문화 형성이 구축되어야 할 것이다. 그리고 글로벌 민주시민 양성, 2009 개정 교육과정에서 추구하는 인간상, 그리고 경상북도교육청에서 제시하고 있는 '새로운 생각과 참된 마음을 지닌 인재'를 육성하기 위한, 즉 경상북도 일반고 교육역량 제고를 위한 구체적인 실천과제와 전략들도 제시하였다.

• 한국도서관정보학회지
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• 제52권2호
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• pp.209-233
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• 2021

본 연구는 초등교사들의 정보추구행태를 분석하여 학교도서관의 교육정보서비스 개발에 시사점을 얻는데 목적을 두고 있다. 이에 초등교사 11명을 대상으로 심층 면담을 실시하여 초등교사들이 인식하는 역할과 업무에 대한 인식을 분석하고, 이에 따른 정보 요구와 주 정보원을 파악하였다. 분석 결과 초등교사들은 자신의 역할과 업무를 담임 업무, 교수·학습활동, 학교 담당 업무, 기타 업무 순으로 그 중요성을 인식하고 있었으며, 이에 따라 웹정보 및 인적 정보, 도서 정보 등을 정보원으로 활용하고 있었다. 각 역할과 업무에 따라 웹정보 또는 인적 정보를 주로 활용하는 것으로 나타났으며, 초등교사 간 웹 커뮤니티가 주 정보원으로 인식되는 경향을 보였다. 이에 학교도서관에서 운영하는 다양한 교육정보를 많은 초등교사들이 이용하는 웹 정보원에서 공유하는 것, 초등교사들과 학습 공동체 형성을 통해 협력적 교육 정보서비스를 제공하는 것, 학교도서관을 통해 다양한 담임 업무 관련 도서를 제공하는 것 등을 제안하였다.

• 전기의세계
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• 제30권5호
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• pp.252-262
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• 1981

The Institute of Electrical Engineers of Japan (JIEE) was founded far back in 1888, in the very dawn period of the electric power utilities, For the past 93 years since its establishment, the JIEE has been contributing much, in the same manner as you, towared technological progress and industrial growth in many fields of electrical engineering in Japan. Now, I am very happy to say that it will certainly be a matter of great significance for the Institute of Electrical Engineers in both countries to exert their cooperative efforts for establishment of new technologies towared the future. Today I would like to introuduce you the current status fo electrical power engineering in the Japanese electric utilities and to refer to the future R and D tasks coping with the severe energy situation.

• Journal of Dental Anesthesia and Pain Medicine
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• 제20권1호
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• pp.1-8
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• 2020

Behaviour management and dental procedures performed in very young, pre-cooperative, highly anxious, or medically disabled children are challenging tasks. Various drugs and methods have, however, been introduced to facilitate treatment for this patient population. Midazolam is a benzodiazepine used as an adjunct to behavior management techniques in the dental treatment of pediatric patients. Midazolam can be used as a safe and effective drug for conscious sedation, general anesthetic premedication, and treatment of seizures during dental procedures. Nevertheless, further research involving pediatric patients would be beneficial.

• 대한기계학회논문집A
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• 제24권12호
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• pp.3072-3079
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• 2000

Assembly tasks are often performed by one robot with fixtures. This type of assembly system has low flexibility in terms of the variety of parts and the part-presentation the system can handle. This paper addresses assembly without fixtures using two-manipulator robot. An active method using force feedback is proposed for the peg-in-hole assembly in highly uncertain environment. Assembly states are defined as status having unique motion constraints and events are modeled as variation of the environmental force. The states are recognized through identification of the events using two 6-d. o. f. force/moment sensors. The proposed method is verified and evaluated by experiments with round peg-in-hole assembly.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 19-21 Oct. 1992
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• pp.332-336
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• 1992

We describe about the graphic simulation system which supports the determination of efficient multi-robot motions during cooperation. For the construction of the simulation software for multi-robot motions, two problems are presented. First problem is that all the robot motions must be determinded using both the desired object motions and the holonomic constraints with the object. To find the robot motions combined with the various object motion path, the robot motions are derived from the desired object path instead of a master robot path. Therefore robot motions can be easily modifiable with the various object motions. This type of motion determination is different from that of the master-slaves method using the master robot motions. The other is that the developments of robot application softwares need a heavy cost when the participated robots or the tasks given to the robots are changed. Based on object-oriented programming paradigm, we present useful software objects describing robot application programming environment. The object-oriented programming paradigm increases the software reusability, reliability, and extensibility, and also provides the structual concepts to cope with the various demands of robot application programming.

• 산업경영시스템학회지
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• 제22권50호
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• pp.33-44
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• 1999

This paper describes the Autonomous Vehicles (AV) which are operated for their own tasks. There are chances of conflict resolution such as sharing the same path which can lead to the risk of a collision. This research represents some ways of negotiating the conflict resolution by generating cooperative actions. Negotiation while traveling the path is accomplished by using priority and by announcing the start time of the task. When there is a risk of collision, the AV tries to dissolve the situation of conflict resolution by concurrently adjusting mutual speed and by performing the algorithm of passing. If the speed of the AV cannot be adjusted, it measures the distance between the counterpart of the AV and an obstacle along the path. Then it judges either to proceed by passing the counterpart of the AV or to turn back after observing the current circumstances. The performance of the algorithm described above was proven by a simulator.

• 한국정보시스템학회:학술대회논문집
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• 한국정보시스템학회 2000년도 추계학술대회
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• pp.12-15
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• 2000

An SADT-based methodology is presented for systematically analyzing the container working process in container terminal, as well as an object-oriented design method for an integrated information system for container terminal resource planning and management. Our design architecture is composed of four levels, activity interface, activity PDCA control, human resource management, and facility resource management. Especially, the consideration of the human resource management level makes it possible to support cooperative tasks, to make the authority and responsibility on a task clear, and to extremely promote the balance between human and facility resources. Finally, The system architecture is suggested for Virtual Container Terminal, in which a planned container working process is simulated for previous feasibility check, work orders are transferred to control real devices, and to manage the entire process and related data.

• 전자통신동향분석
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• 제35권7호
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• pp.36-45
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• 2020

The method and process of research and development (R&D) is changing when we develop artificial intelligence (AI), and the way R&D results are dispersed is also changing. For the R&D process, using and participating in open-source ecosystems has become more important, so we need to be prepared for open source. For product and service development, a combination of AI algorithm, data, and computing power is needed. In this paper, we introduce ETRI AI Strategy #4, "Expanding AI Open Platform." It consists of two key tasks: one to build an AI open source platform (OSP) to create a cooperative AI R&D ecosystem, and another to systematize the "x+AI" open platform (XOP) to disperse AI technologies into the ecosystem.