• 한국콘텐츠학회논문지
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• 제9권12호
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• pp.826-835
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• 2009

이 연구의 목적은 시큐리티요원들의 여가유형에 따른 여가제약과 참가의 관계를 규명하는데 있다. 이 연구는 2009년 서울소재 14개소 민간경비회사를 모집단으로 설정한 다음, 유의표집법을 이용하여 최종분석에 사용된 사례 수는 총 387명이다. 설문지의 신뢰도는 Cronbach's $\alpha$값이 .673이상으로 나타났다. 결론은 다음과 같다. 첫째, 성별에 따라서는 여성 집단에서 개인적, 시간적 제약이 높으며, 연령에 따라서는 26-30세 집단에서 시간적 제약, 36세 이상의 집단에서 주변 의식적 제약이 높다. 학력에 따라서는 고졸 이하 집단에서 주변 의식적, 대인적 제약, 전문대졸 집단에서는 구조적 제약이 높으며, 월수입에 따라서는 100만원 미만의 집단에서 주변 의식적, 구조적, 개인적, 대인적 제약이 높다. 직위에 따라서는 팀장급에서 주변 의식적, 구조적, 개인적, 시간적 제약이 높으며, 근무형태에 따라서는 신변보호원 집단이 개인적 제약, 기계경비원 집단에서는 주변 의식적, 구조적, 시간적 제약, 그리고 기타 사무직에서 대인적 제약이 높다. 둘째, 취미 교양 활동의 경우 시간적 제약이 많을수록 참가빈도, 구조적 제약이 많을수록 참가기간, 개인적 제약이 많을 수록 참가강도는 감소한다. 반면, 시간적 제약이 많음에도 참가강도는 증가한다. 놀이 오락 활동의 경우 주변 의식적 제약이 많음에도 참가빈도 및 기간, 개인적 제약이 많음에도 참가기간이 증가한 반면, 구조적 제약이 많을수록 참가빈도 및 기간은 감소한다. 관람 감상 활동의 경우 대인적 제약이 많음에도 참가빈도 및 기간, 시간적 제약이 많음에도 참가기간은 증가한 반면, 구조적 제약이 많을수록 참가빈도 및 기간은 감소한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1993년도 한국자동제어학술회의논문집(국제학술편); Seoul National University, Seoul; 20-22 Oct. 1993
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• pp.486-490
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• 1993

In addtion to a basic motion task, redundant manipulators can achieve some additional tasks by optimizing proper performance criteria. Some of performance criteria can be transformed to inequality constraints. So the redundancy resolving problem can be reformulated as a local optimization problem with equality constraints for the end effector and inequality constraints for some performance criteria. In this article, we propose a method for solving the inverse kinematics of a manipulator with redundancy using the Kuhn-Tucker theorem to incorporate inequality constraints. With proper choice of inequality constraints, the proposed method gives a way of optimizing multiple criteria in redundant manipulators.

• 한국정밀공학회지
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• 제26권3호
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• pp.55-67
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• 2009

This paper addresses the dynamic consideration of the athletic constraints on skating motion. In order to generate a human-like skating motion, the athletic constraints are distinctively analyzed into dynamic constraints and physical constraints. A close investigation of the athletic constraints evolved valid extent of dominant parameter for a leg muscle. During the human-like skating motion, the state of actuation was shifted from region of maximum force to region of maximum power. Simulation results were intuitively comprehensible, and the effectiveness of analytic algorithm was demonstrated for skating motion.

• 한국전자거래학회지
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• 제1권1호
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• pp.173-194
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• 1996

In order to adapt today's short product life cycle and rapid technology changes., integrated systems should be extended to support PDM (Product Data Management) or CE(Concurrent Engineering). A PDM/CE environment has been developed and a prototype is Presented in this paper. Features of the PDM/CE environment are 1) integrated product information model (IPIM) includes both data model and integrity constraints, 2) database systems are organized hierarchically so that working data C8Mot be referenced by other application systems until they are released into the global database, and 3) integrity constraints written in EXPRESS are validated both in the local databases and the global database. By keeping the integrity of the product data, undesirable propagation of illegal data to other application system can be prevented. For efficient validation, the constraints are distributed into the local and the global schemata. Separate triggering mechanisms are devised using the dependency of constraints to three different data operations, i.e., insertion, deletion, and update.

• 로봇학회논문지
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• 제10권3호
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• pp.133-138
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• 2015

This paper presents a modified task structure of coupled-constraints consensus based bundle algorithm especially to resolve the cooperative transportation problem. The cooperative transportation mission has various types of constraints. A modified framework to generate activities and subtasks to solve time and task constraints of the transportation mission by using coupled-constraints consensus based bundle algorithm is suggested. In this paper modifications on task structure, reward function and arrival time calculation are suggested to handle the constraints of cooperative transportation mission.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 A
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• pp.7-9
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• 2000

This paper deals with optimal power flow, which is optimal problem with equality constraints and inequality constraints. An a1gorithm of changing inequality constraints problem to equality constraints problem is applied to real systems.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.726-729
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• 2004

Spatiotemporal phenomena are ubiquitous aspects of real world. In the spatial and temporal databases, integrity constraints maintain the semantics of specific application domain and relationship between domains when proceed update in the database. Efficient maintenance of data integrity has become a critical problem, since testing the validity of a large number of constraints in a large database and after each transaction is an expensive task. Especially, in spatiotemporal domain, data is more complex than traditional domains and very active. Additionally, it is not considered that unified frameworks deal with both spatial and temporal properties to handle integrity constraints. Therefore, there need a model to maintain integrity constraints in the unified frameworks and enforcement and management techniques in order to preserve consistence.

• 통상정보연구
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• 제11권2호
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• pp.329-342
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• 2009

The purpose of this study was to identify the issues which how situational constraints of negotiation affect outcomes. To achieve the purpose of this research, a multiple regression model was set up to identify the relationships between situational constraints of negotiation and negotiation outcome on international trade contracts. To implement the study, empirical questionnaires were collected from Korean business men who have actually conducted international trade with foreign firms. Reliability analysis and factor analysis were used to assess the reliability and validity of research variables. and multiple regression analysis were used for testing the relationships between situational constraints of negotiation and negotiation outcome. From this study, following results were identified; i) situational constraints of negotiation effects on negotiation outcomes ii) arbitrary and continuous situations affect significantly positive on negotiation outcomes iii) submissive situations affect significantly negative effects on negotiation outcomes In conclusion, participant of negotiation and their managers try to promote negotiation situation toward to arbitrary and continuous situations if they have any availability.

• 한국정밀공학회지
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• 제13권9호
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• pp.84-93
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• 1996

This paper describes the development of new feature positioning method which embedded into the top-down assembly modeling system supporting conceptual design. In this work, the user provides the geometric constraints representing the position and size of features, then the system calculates their proper solution. The use of geometric constraints which are easy to understand intuitively enables the user to represent his design intents about geometric shapes, and enables the system to propagate the changes automatically when some editing occurs. To find the proper solution of given constraints, the Selective Solving Method in which the redundant or conflict equations are detected and discarded is devised. The validity of feature shapes satisfying the constraints can be maintained by this technique, and under or over constrained user-defined constraints can also be estimated. The problems such as getting the initial guess, controlling the multiple solutions, and dealing with objects of rotational symmetry are also resolved. Through this work, the feature based modeling system can support more general and convenient modeling method, and keeps the model being valid during modifying models.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 1997년도 가을 학술발표회 논문집
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• pp.189-196
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• 1997

The development of computer integrated systems for structural design requires models to describe and organize information and activities involved in design. An entity-based integrated design model involves a number of product and process entities. Product entities and process entities describe design information and design activities, respectively. One type of relationships among entities is interaction relationships, which describe interdependencies among design information. The interaction relationships can be represented as constraints. Types of constraints include demand constraints, dependency constraints, and interaction constraints. The concepts of representing and processing demand constraints in an entity-based integrated design model are presented.