• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1996년도 추계학술대회발표논문집; 고려대학교, 서울; 26 Oct. 1996
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• pp.214-217
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• 1996

Early decision support systems (DSS) were the "passive" decision support systems in the sense that the systems only able to do what the users explicitly direct them to do. But some researchers such as Raghav Rao et al. [51 showed architectures to suggest general idea of the innovative DSS systems which offer active form of decision support, say, "active Intelligent Decision Support Systems(active IDSS)". The system can perform not only what the users want to do but some voluntary (or involuntary) intelligent works. This paper presents the issues in the design of the active IDSS in the domain of investment evaluation, a domain area where few researchers have suggested frameworks or architectures to discriminate good investment from bad one. We propose a new paradigm, by utilizing historical investment results using neural network and Multivariate Discriminant Analysis(MDA), to identify goodness of investment. A new active IDSS architecture which consists of neural network, expert system and three components of the traditional passive DSS is suggested with some scenario based results.nario based results.

• Geomechanics and Engineering
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• 제11권2호
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• pp.177-195
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• 2016

To secure the stability of geotechnical infrastructures and minimize failures during the construction process, a number of support systems have been introduced in the last several decades. In particular, stabilization methods using steel bars have been widely used in the field of geotechnical engineering. Rock bolt system is representative support system using steel bars. Pre-stressing has been applied to enhance reinforcement performance but can be released because of the failure of head or anchor sections. To overcome this deficiency, this paper proposes an innovative support system that can actively reinforce the weak ground along the whole structural element by introducing an active tension bolt containing a spring unit to the middle of the steel bar to increase its reinforcement capacity. In addition, the paper presents the support mechanism of the active tension bolt based on a theoretical study and employs an experimental study to validate the performance of the proposed active tension bolt based on a down-scaled model. To examine the feasibility of the active tension unit in a pillar, the paper considers a pullout test and a small-scale experimental model. The experimental results suggest the active tension bolt to be an effective support system for pillar reinforcement.

• The Journal of Korean Physical Therapy
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• 제22권5호
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• pp.57-61
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• 2010

Purpose: The purpose of this study was to identify the effect of active foot arch support on the muscles of lower extremity electromyographic activity during squat exercise in persons with pronated foot. Methods: The study subjects were 16 persons with pronated foot. They have no history of surgery in lower extremity and trunk and limitation of range of motion or pain when performing squat exercise. Each subject was measured the navicular drop (ND) to determine the pronated foot. And then the subjects were asked to perform three repetitions of a $90^{\circ}$ knee flexion squat in both conditions which are 1) preferred squat and 2) squat with active foot arch support. Results: Paired t-test revealed that squat with active foot arch support produced significantly greater EMG activities in abductor hallucis (p=0.00), proneus longus (p=0.03) and gluteus medius (p=0.04) than preferred squat. But the EMG activities of tibialis anterior, vastus medialis oblique and vastus lateralis were not showed significantly different between the both squat conditions. Conclusion: The findings of this study suggest that active foot arch support during squat increase the activities of lower extremity muscles which are the abductor hallucis, proneus longus and gluteus medius. Also, the abductor hallucis which is one of the planter intrinsic muscle and peroneus longus play a role in support of the foot arch and active foot arch support induced the increase of the activity of gluteus medius. Therefore active foot arch support can change the lower extremity biomechanics as well as passive foot support such as foot orthotics and taping.

• 산경연구논집
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• 제10권2호
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• pp.25-37
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• 2019

Purpose - The goal of this study is to analyze the differences in education performances between students of the government's financial support program and those who do not receive support at a local university in Korea. Research design, data, and methodology - The questionnaire used was NASEL. NASEL is considered a highly suitable survey tool for professors, courses, and performances in Korean universities. The 290 students who participated and 44 students do not participate in the financial support program were surveyed for 10 days. The characteristics of students were investigated by frequency analysis and technical statistics. The analysis of student collective characteristics used independent t and f-tests,and one-way ANOVA with IBM SPSS Statistics 22.0 for statistical purposes. Results - The p-value of the group receiving financial support and the group without financial support in active-collaborative learning is 0.167. The p-value of the economically supported group and the non-supported group of the faculty-student interaction is 0.281. The confidence coefficient of the active-collaborative learning questionnaire is 0.861. The reliability coefficient of the questionnaire for the faculty-student interaction questionnaire is 0.871. Conclusions - There are no clear differences in active-collaborative learning and faculty-student interaction between participating and non-participating students in the economic program.

• 정보처리학회논문지A
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• 제10A권4호
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• pp.295-304
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• 2003

능동객체는 스레드와 같은 독립적인 실행단위로서 객체가 생성될 때 CPU의 스케줄을 받아 실행되어지는 개체이다. 본 논문에서는 이러한 능동객체론 정의하고, 능동객체의 생성 및 실행을 제어하는 능동객체 실행시간 지원시스템(Active object Run Time support systems ; ART)을 제시하였다. 또한 ART는 분산 환경에서 사용자들에게 위치 투명성이 보장되고, 편리한 방식으로 분산 프로그래밍을 할 수 있도록 능동객체 사이에 메소드 호출을 지원할 수 있고, 이를 위한 통신 기법을 설계하고 구현하였다. 그리고 본 논문에서 제안하는 ART를 임베디드 시스템과 같이 시스템 자원이 제한되어 있고, 분산 환경으로 구성되어 있는 시스템에 적용하여 구현하였다.

• 한국산업융합학회 논문집
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• 제24권1호
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• pp.31-43
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• 2021

In this study, approximate design optimization using various meta-models was performed for the structural design of active type deck support frame. The active type deck support frame was newly developed to facilitate both transportation and installation of 20,000 ton class offshore plant topside. Structural analysis was carried out using the finite element method to evaluate the strength performance of the active type deck support frame in its initial design stage. In the structural analysis, the strength performances were evaluated for various design load conditions that were regulated in ship classification organization. The approximate optimum design problem based on meta-model was formulated such that thickness sizing variables of main structure members were determined by achieving the minimum weight of the active type deck support frame subject to the strength performance constraints. The meta-models used in the approximate design optimization were response surface method, Kriging model, and Chebyshev orthogonal polynomials. The results from approximate design optimization were compared to actual non-approximate design optimization. The Chebyshev orthogonal polynomials among the meta-models used in the approximate design optimization represented the most pertinent optimum design results for the structure design of the active type deck support frame.

• 한국보육지원학회지
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• 제15권4호
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• pp.135-153
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• 2019

Objective: The purpose of this study was to examine whether motivation for choosing a teaching profession and the perception of social support of newly-appointed childcare teachers would predict work adjustment, and to understand the mediating role of the perception of social support. Methods: The data was analyzed by using correlation, regression, and the verification of mediating effects. Results: First, there were significant correlations of active motivation and material motivation when choosing a teaching profession, perception of social support, and work adjustment. Second, active motivation and material motivation in relation to choosing a teaching profession, and the perception of social support, were the variables that could predict the work adjustment of newly-appointed teachers. Third, the social support perceived by newly-appointed teachers had partial-mediating effects on the relationship between active motivation in relation to choosing a teaching profession and work adjustment, as well as on the complete-mediating effects on the relationship between material motivation and work adjustment. Implications: The training institute should strengthen education that could foster active motivation of pre-service teachers, and daycare centers should establish a cooperative workplace culture for the psychological adjustment of newly-appointed teachers.

• 아동학회지
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• 제28권6호
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• pp.233-247
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• 2007

The relation of children's stress-coping styles to Risk of Internet Gaming Addiction(RIGA) was examined in 662 4th, 5th and 6th grade subjects. Results showed that active coping styles were negatively but aggressive and passive/avoidant coping styles were positively related to RIGA. In male students, coping styles of "active" and "passive/avoidant", "aggressive" influenced RIGA factors of "maladaptive behaviors" and "negative emotional experience". In female students, coping styles of seeking social support related positively to RIGA; coping styles of "active", "passive/avoidant", and "aggressive" influenced "maladaptive behaviors", "negative emotional experience", and coping styles of "active" and "passive/avoidant", "seeking social support" influenced "low academic attitude", RIGA factors, respectively. Coping styles of "active", "passive/avoidant", "aggressive", and "seeking-social-support" influenced "psychological absorption and fixation".

• 전기학회논문지
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• 제63권5호
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• pp.597-607
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• 2014

This paper proposes active power control and frequency support control schemes of wind turbine generation system by using modified Maximum Power Point Tracking(MPPT) of Permanent Magnet Synchronous Generator(PMSG). Most wind turbine generation system is completely decoupled from the power system and power output control with pitch control. According to the frequency deviation, however, MPPT control can not contribute to the frequency change of the power system due to its active power output control. For solving this, the de-loaded(DL) control scheme is constructed for the frequency support control, which is based on applying the active power output control in the rotor speed control of PMSG. The rotor speed by used in the proposed DL control scheme is increased more than the optimal rotor speed of MPPT, and then this speed improvement increases the saved kinetic energy(KE). In order to show the effectiveness of the proposed control scheme, the case studies have been performed using the PSCAD/EMTDC. The results show that the proposed active power output control scheme(DL control and KE discharge control) works properly and the frequency response ability of the power system can be also improved with the frequency support of wind farm.

• 한국멀티미디어학회논문지
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• 제7권1호
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• pp.113-125
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• 2004

능동 네트워크는 능동 네트워크 애플리케이션의 통신 중 요구사항의 처리를 할 수 있게 하는 소프트웨어 프레임 워크를 제공한다. 능동보안을 위한 컴포넌트 아키텍쳐는 관련 컴포넌트들의 조합으로 재사용 시스템을 쉽게 구축할 수 있다. 이 아키텍쳐는 컴포넌트를 획득하고, 이해하며 조립하기 위한 표준 계층으로서 컴포넌트 식별, 탐색과 조정을 위한 지침을 제공해야 한다. 본 논문에서는 최근 연구되어지고 있는 능동네트워크의 보안에 대한 부분을 관리하기 위한 능동보안 컴포넌트 개발을 위한 아키텍쳐 설계 및 도메인 분석을 하였으며, 능동보안 도메인 아키텍쳐를 이용한 컴포넌트 개발을 위한 설계명세에 대하여 연구하였다.