• Communications for Statistical Applications and Methods
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• 제17권4호
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• pp.561-574
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• 2010

본 논문은 8가지 방법의 데이터 마이닝 알고리즘(CART, QUEST, CRUISE, 로지스틱 회귀분석, 선형판별분석, 이차판별분석, 신경망분석, 서포트 벡터 머신) 기법과 단일 알고리즘에 2가지 앙상블기법(배깅, 부스팅)을 적용한 16가지 방법을 바탕으로 총 24가지의 방법을 비교하였다. 알고리즘의 성능 비교를 위하여 13개의 이항반응변수로 구성된 데이터를 사용하였다. 비교 기준은 민감도, 특이도 및 오분류율을 사용하여 데이터 마이닝 기법의 성능향상에 대해 평가하였다.

• 한국실내디자인학회논문집
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• 제38호
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• pp.91-99
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• 2003

In the philosophical sense, aZen teacher would probably say there is no answer to the Question. Whatnis Zen\ulcorner Zen is an approach to life, a way of being , rather then a philisophy or set doctrine. Modern living people quest for peace and tranquility has led designers and decorators to look to East to the natural harmony and blance of Asian home and to the simpicity of their art and design. Zen style interiors are simplicity and serenity. These imply the paring down of a cluttered environment and concentration on creating harmony. balance, touch, and texture. By achieving these things you can create a place where the spiritual or inner needs can be addressed and where you can indulge in calming or stimulating the senses with light, space, and free flow of energy In Zen interior we approach 'Homoㆍaesthetcus' by feeling and' Homoㆍreligious' by mind. "Less is more", this phrase has made the pared down environment an interior form.

• International Journal of Precision Engineering and Manufacturing
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• 제1권1호
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• pp.84-90
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• 2000

The importance of Virtual Manufacturing System is increasing in the area of developing new manufacturing processes, implementing automated workcells, designing plant facility layouts and workplace ergonomics. Virtual manufacturing system is a computer system that can generate the same information about manufacturing system structure, states, and behaviors as is observed in a real manufacturing. In this research, a virtual manufacturing system for flexible manufacturing cells (VFMC), (which is a useful tool for building Computer Integrated Manufacturing (CIM), has been developed using object-oriented paradigm, and implemented with software QUEST/IGRIP. Three object models used in the system are the product model, the facility model, and the process model. The concrete behaviors of a flexible manufacturing cell are re[presented by the task-oriented description diagram, TIC. An example simulation is executed to evaluate applicability of the developed models, and to prove the potential value of virtual manufacturing paradigm.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제44회 동계 정기학술대회 초록집
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• pp.127-127
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• 2013

The quest for renewable energy requires us to understand, predict, and ultimately control matter and energy at the electronic, atomic, and molecular levels. The ever-increasing demand to diversify the energy portfolio and to minimize environmental impact while supplying global energy needs, has intensified the urgency for developing alternative energy sources and carriers. Significant research efforts are under way and will continue in a broad range of materials synthesis, use-inspired and fundamental science with the use of light sources such as synchrotron and free electron lasers. Energy-related materials research faces urgent challenges today. We need to go beyond the Edisonian hit and trial approach to more systematic research with the use of advanced tools applicable under realistic in-situ and in-operando conditions capable of exploring electronic and atomic structure of catalysts and energy relevant materials. Through various scientific examples, I will explain the current state-of-the art and future directions in the aforementioned areas of research.

• 한국가스학회:학술대회논문집
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• 한국가스학회 2007년도 춘계학술발표회 논문집
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• pp.27-32
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• 2007

Dimethyl Ether (DME, $CH_3OCH_3$) is the simplest ether and is considered as one of the leading candidates in the quest for a substitute fur petroleum-based fuels. In this work, we analyzed the one-step synthesis of DME in a shell and tube type fixed bed reactor and carried out a simulation with a one-dimensional, steady state model of a heterogeneous catalyst bed, while taking into consideration the heat and mass transfer between the catalyst pellets and reactants gas and the effectiveness factor of the catalysts, together with the reactor cooling through the reactor tube wall. The reactor simulation was carried out under steady state condition and we compared the simulation results with the experimental data obtained from operations of a pilot-scale reactor and found good agreement between them.

• 한국실내디자인학회논문집
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• 제3호
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• pp.71-77
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• 1994

The purpose of this study is to investigate the utilization of the interior environment in hotel lobby and to grasp the requests of visitors. The significance of the study is to illustrate the present characters of hotel lobby and to offer the basic data for future hotel projects. The materials for this study has been collected through questionnaires garnered from six deluxe hotels in Cheju, and statistically analyzed by the semantic differential scale of L. E. Osgood. The conclusion of this study as follows . 1) Hotel lobby is used as waiting space for a short time and frequent use is four times a day. The lobby is used by the quest for meeting , waiting as a resting place while it serves as the visitor's meeting and resting place. 2) The user prefers the lobby's open space. It is desirable for the area of activity of a quests and visitors to have separate entrances. The space composition of the lobby is centrally located between the room and subsidiary equipment. The hotel lobby has needed of a method which promotes lobby image through a magnificent view of the outside.

• Asian Journal of Business Environment
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• 제3권1호
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• pp.5-16
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• 2013

Purpose - Micro-finance institutions (MFIs) are critical to Vietnam's quest for poverty alleviation among the poor in the rural and agrarian communities. The current study attempts to investigate the impact of microfinance outreach programs undertaken by formal and semi-formal MFIs in Vietnam targeting the poor rural and agrarian communities. Research design, data, methodology - An enquiry was made as to whether the poor and rural communities accessed the micro credit offered by Government supported MFIs and NGOs through their microfinance outreach programs. Furthermore, the current study attempted to explore if the current mode of operations adopted by MFIs in Vietnam is sustainable. Results -The findings indicate that significant progress has been made in Vietnam to alleviate poverty among the poor rural communities through micro finance outreach programs. Conclusions - There are also pointers of MFIs sustainability in Vietnam. However, it still remains to be seen if the current sustainability pointers are long lasting without government subsidies or some international organizations financial support to microfinance outreach programs.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2007년도 가을 학술발표논문집 Vol.34 No.2 (D)
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• pp.261-266
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• 2007

UMTS release 5 에서 소개된 HSDPA 를 위해 도입된 새로운 기술 Adaptive Modulation and Coding, Hybrid Automatic Repeal reQuest, Fast Packet Scheduling 에 대해 알아보고 여기서 key role 이 되는 Fast Packet Scheduling 알고리즘 가운데 대표적인 세 가지 Round Robin(RR), Promotional Fairness(PF), Maximum Channel Quality Index(Max CQI) 알고리즘의 성능을 시스템 수율과 공평성의 관점에서 분석해보았다. 시스템 수율에서는 Max CQI, PF. RR 알고리즘 순이었으며 공평성 측면에서는 RR, PF Max CQI 알고리즘 순으로 나타났다. 같은 시스템, 같은 망 구조 내에서라면 알고리즘을 최적화하여 QoS와 성능을 극대화할 수 있도록 지속적인 연구가 필요하다.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2008년도 한국컴퓨터종합학술대회논문집 Vol.35 No.1 (D)
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• pp.165-169
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• 2008

본 논문에서는 IEEE 802.16 시스템에서 ARQ(Automatic Repeat reQuest)의 동작이 TCP 성능에 끼치는 영향을 분석한다. IEEE 802.16 표준에서는 MAC 계층에서 패킷 전송의 성공 혹은 실패를 확인하여, 실패 시 패킷을 재전송하는 ARQ 기법을 포함하고 있다. 이러한 무선 링크상의 재전송은 TCP와 맞물려 동작할 때, 적절한 ARQ 재전송 타임아웃(timeout)이 보장되지 않으면 심각한 TCP 성능 저하를 초래할 수 있다. 이에 대하여 IEEE 802.16 시스템의 ARQ는 총 4가지의 타이머(timer)들이 존재하지만 그 구체적인 값들은 표준에서 다루고 있지 않다. 본 연구는 이러한 ARQ 타이머들의 값에 따라 TCP 성능이 어떻게 변하는지를 시뮬레이션을 통해 분석하고 적절한 값을 제시한다.

• 간호행정학회지
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• 제23권2호
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• pp.181-190
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• 2017

Purpose: This study was done to clarify the concept analysis of positive psychological capital. Methods: Walker and Avant's concept analysis process was used in this study. CINAHL, ProQuest, Web of science, NDSL, RISS databases from 2004 to 2016 were searched using the keywords 'Positive psychological capital' and 'PsyCap'. Sixty-one relevant articles and three book were finally selected. Results: Analysis of identified literature indicated that positive psychological capital attributes were developable potential, positive cognition, expression of emotion, multiple psychological capability, and resources with positive effect. The antecedents were goal achievement, training, leader's motivation, and supportive organizational environment. The consequences were overall wellbeing which is composed of individual's physical, psychological and social wellbeing and enhancement of work outcome. Conclusion: The findings in this study provide a definition of the concept of positive psychological capital and theoretical evidence for the future research for nurses including program development.