• Archives of design research
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• v.14 no.4
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• pp.189-198
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• 2001

This study was to identify HCl design factors for increasing information processing and attention for mentally retarded children. Several factors such as size, location, moving distance were varied for three experiments operated by the amount of information. The results showed that the larger size of target, the greater moving distance of target, and the less amount of information increased mentally retarded children's sensitivity. Also, when the target was displayed at upper left of computer screen, sensitivity of mentally retarded children was high, compared other locations of screen.

• Archives of design research
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• v.18 no.2 s.60
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• pp.91-100
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• 2005

There is few cultural tourism festival study which investigated snow related sculptures satisfaction from festival visitors and residents. The purposes of this study were to investigate the satisfaction of snow related sculptures based on festival visitors' and residents' evaluation and give directions for festival planners The important results of this study are as following: First, visitors from out of Taebak city satisfied with National Snow Sculpture Contest, International Snow Sculpture Exhibition, and Mysterious International Snow Culture Exhibition. They did not satisfied with Making Snowmen for Genius, Our Family Snow Sculptures, and Winter Riding Experiences. Secondly, residents satisfied with International Snow Sculpture Exhibition, Mysterious International Culture Snow Exhibition, and National Snow Sculpture Contest. Their satisfaction was low about Our Families' Snow Sculptures, and Winter Riding Experiences. Thirdly, introducing experience-oriented programs and facilities are recommended to festival planners for better festival than this year.

• The Journal of the Korea Contents Association
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• v.20 no.10
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• pp.566-579
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• 2020

The aim of this study was to determine how to improve smart working in South Korea. Smart working has recently become a key issue in e-government and flexible working studies. Smart working can improve public servants' quality of life and job performance. However, institutional, managerial, and infrastructural conditions that support smart working must be implemented for smart working arrangements to be successful. Therefore, this study analyzed the impact of institutions, management, and infrastructure on the effectiveness of public servants working in smart working conditions. The results showed that institutional, managerial, and infrastructural factors have a significant impact on the effectiveness of civil servants working in smart working conditions. Institutional and infrastructural factors also influenced organizational effectiveness. These findings have implications for how to manage smart working in the public sector in South Korea.

• Journal of Korean Physical Therapy Science
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• v.9 no.3
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• pp.7-17
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• 2002

편마비 환자의 인지 기능과 운동 및 신체적 기능에 관련된 변인을 분석하고자 하였다. 본 연구는 인지 기능이 편마비 환자에게 미치는 영향과 인지 영역의 손상이 편마비 환자의 독립적 기능 및 수준 향상의 예언 인자로서의 고려해야 할 개념을 검사나 평가 척도로 비교, 분석 하였다. 연구 대상은 전라북도에 소재한 한방병원에 입원 및 통원하고 있는 52-73세의 연령 범위에 있는 편마비환자 20명 이다. 편마비 환자의 기능적 능력, 운동 회복, 신체적 기능 그리고 인지적 상태를 평가하기 위해 편마비 환자를 위한 임상적 결과 변인 척도, 운동 평가 척도와 바델 척도 그리고 기능적 독립성 측정 척도를 평가도구로 사용하였다. 편마비 환자의 신체적, 운동 그리고 기능적 능력 상태를 평가도구에 의해 측정된 결과를 분석한 바 운동, 신체적 그리고 인지적인 영역과 기능적 독립 측정 척도 및 바델 척도와 관련성이 있음을 보여주고 있다. 편마비 환자의 신체적, 인지적 결함이나 손상 부위, 손상의 본질에 따른 대상의 선정과 운동 조절 형태에 관한 지식 그리고 인지와 신경학적 결함 정도를 심도있게 다루어 기능적 능력 향상의 임상적 효과를 높이고자 하는데 연구의 의의가 있다.

• Journal of Distribution Research
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• v.9 no.3
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• pp.21-47
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• 2004

This study has investigated the effects of relieving and promoting factors on dissolution intention under the condition of low commitment buyer-seller relationships. Based on intensive literature reviews, eight alleviating factors (dependence, cooperation, communication, relational norms, transaction specific investments, relationship termination costs, satisfaction, and trust) and five promoting factors (opportunism, conflict, goal incongruity, attractiveness of alternatives, and unfairness) were included. A total of thirteen hypotheses were testee using data collected from a dining franchising system. Among 300 collected, 79 cases of low commitment buyer-seller relationships were analyzed. The results showed that eight out of thirteen hypotheses were supported. But five hypotheses related to the variables of cooperation, transaction specific investments, relationship termination costs, attractiveness of alternatives, and opportunism were not supported. following a detailed presentation of the analysis results, the paper concludes by discussing the academic and managerial implications of the findings.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.10 no.2
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• pp.1-8
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• 2011

Traffic congestion is a source of significant economic and social costs in urban areas. Intelligent Transportation Systems (ITS) are a promising means to help alleviate congestion by utilizing advanced sensing, computing, and communication technologies. This paper proposes and investigates a basic and advanced ITS framework Advanced Traveler Information System (ATIS) using wireless Vehicle to Roadside (Centralized ATIS model: CA model) and Vehicle to Vehicle (DeCentralized ATIS model: DCA model) communication and assuming an ideal communication environment in the typical $6{\times}6$ urban grid traffic network. Results of this study indicate that an ATIS using wireless communication can save travel time given varying combinations of system characteristics: traffic flow, communication radio range, and penetration ratio. Also, all tested metrics of the CA and DCA models indicate that the system performance of both models is almost identical regardless of varying traffic demand and penetration ratios. Therefore, DCA model can be a reasonable alternative to the fixed infrastructure based ATIS model (CA model).

• Applied Chemistry for Engineering
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• v.18 no.2
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• pp.173-177
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• 2007

EB irradiation method was used to prepare polyvinyl alcohol (PVA) capped silver nanoparticles under various conditions including PVA concentration, $AgNO_3$ concentration, IPA concentration, and EB dosage. The increase in the distribution of particles size was observed with an increase in the concentrations of PVA, $AgNO_3$, IPA, and EB dosage. $AgNO_3$ concentration, IPA concentration, and EB dosage were found to have a great effect on the amount of silver particles formed in PVA matrix by EB irradiation method. These results were confirmed by XRD, UV, and TEM. XRD (X-ray diffraction) technique confirmed the zero valent state of silver. Optical studies were done using UV-visible spectrophotometer to see the variation of silver particles formed in PVA matrix. Transmission Electron Microscopic (TEM) was employed to show the particle size and distribution of silver foamed in PVA matrix.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2002.11a
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• pp.178-198
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• 2002

1980년대 초기 미 국방성에서는 소프트웨어 개발업체의 소프트웨어 개발능력에 대한 판단 착오로 금전적, 시간적, 성능상의 많은 어려움을 겪어왔다. 따라서 미 국방성은 카네기 멜론 대학의 SEI(Software Engineering Institute)를 통하여 소프트웨어 개발능력을 측정하고, 조직의 소프트웨어 프로세스 성숙수준을 결정하기 위한 CMM(Capability Maturity Model)을 개발하였다. 그러나 CMM에 기반을 둔 소프트웨어 프로세스 평가 방법은 외부 전문가를 이용하여 평가하므로, 시간과 비용이 많이 소모되는 방법이다. 따라서 많은 기업에서 이러한 평가를 수행하는데 어려움을 느끼고 있다. 특히, 중ㆍ소규모의 조직에서 사용하기에는, CMM의 평가방법은 너무 복잡하고 추상적이다. 소규모 기업의 경우에 3년여에 걸친 프로세스 향상노력으로 많은 성과가 이루어 졌음에도 불구하고 CMM의 평가방법을 이용한 결과는 1 단계 수준을 벗어나지 못하였다는 사례들이 많이 발표되고 있다. 이러한 결과들은 CMM의 평가 방법은 중소 규모 조직에는 적절치 않다는 것을 입증한다. 따라서 중소 규모 기업이나 조직의 소프트웨어 프로세스의 성숙도 평가와 개선을 위한 모델들을 개발하기 위한 노력이 전 세계적으로 광범위하게 펼쳐지고 있다. 본 연구에서는 최근의 모델인 CMMI(Capability Maturity Model Integration)의 소프트웨어 프로세스 영역 분류에 의거해서, 우리나라의 소프트웨어의 개발과 취득에 관련된 조직들이 각 프로세스 영역을 얼마나 중요하게 평가하는지, 그리고 해당 영역에서의 기준, 절차 그리고 방법을 문서화시키는 것을 얼마나 중요하게 평가하는지를 조사하였다. 한국의 소프트웨어 개발 관행은 CMM이나 ISO Is504 등에서 바람직한 것으로 제시하고 있는 국제 표준과는 많이 다르며, 나아가서는 예를 들어, 미국의 일반적인 관행과도 많이 다를 수 있다. 따라서 미국이나 유럽의 대규모 소프트웨어 조직을 위해서 개발된 CMM이나 ISO 15504 등은 우리나라의 중소 규모 소프트웨어 조직에는 특히 부적절할 수 있다 본 연구에서는 우리나라 소프트웨어 조직의 종류, 조직의 규모, 그리고 프로젝트 수행 규모에 따라서 각 소프트웨어 프로세스 영역의 중요도가 어떻게 다른지, 그리고 해당 소프트웨어 프로세스 영역의 기준, 절차 그리고 방법을 문서화시킬 필요성이 어떻게 변하는가를 조사하였다. 본 연구 결과는 우리나라의 소프트웨어 조직들이 프로세스 개선을 위해서 무엇을 정말로 필요로 하는지를 밝힘으로써, 한국 소프트웨어 산업의 현실적인 특수성을 고려한 소프트웨어 프로세스 평가와 개선 모델의 개발을 위한 기초적인 자료를 제공할 것으로 예상된다 또한, 본 연구 결과는, 우리나라 소프트웨어 조직들이 실제로 무엇을 필요로 하는지를 밝힘으로써, 우리나라의 소프트웨어 산업을 육성하기 위한 실효성 있는 정책 입안을 위한 기초 자료를 제공할 것으로 예상된다.

• Computational Structural Engineering
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• v.7 no.1
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• pp.109-116
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• 1994

In this paper, various reliability analysis methods for calculating a probability of failure are investigated for their accuracy and efficiency. Crude Monte Carlo method is used as a basis for the comparison of various numerical results. For the sampling methods, Importance Sampling method and Directional Simulation method are considered for overcoming a drawback of Crude Monte Carlo method. For the approximate methods, conventional Rackwitz-Fiessler method. 3-parameter Chen-Lind method, and Rosenblatt transformation method are compared on the basis of First order reliability method. As a Second-order reliability method, Curvature-Fitting paraboloid method, Point-fitting paraboloid method, and Log-likelihood function method are explored in order to verify the accuracy of the reliability calculation results. These methods mentioned above would have some difficulty unless the limit state equation is expressed explicitly in terms of random design variables. Thus, there is a need to develop some general reliability methods for the case where an implicit limit state equation is given. For this purpose, Response surface method is used where the limit state equation is approximated by regression analysis of the response surface outcomes resulted from the structural analysis. From the application of these various reliability methods to three examples, it is found that Directional Simulation method and Response Surface method are very efficient and recommendable for the general reliability analysis problem cases.

• Journal of Convergence for Information Technology
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• v.10 no.5
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• pp.232-238
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• 2020

This study evaluated the anti-aging activity with antioxidant, anti-inflammatory and moisture activity of Ganoderma lucidum spore oil(GLS). GLS increased DPPH radical scavenging activity in a dose-dependent manners. Anti-inflammatory assay measured the inhibitory effect of GLS on NO, TNF-α and IL-6 production in LPS-stimulated RAW264.7 cells. As a result GLS inhibited NO and pro-inflammatory cytokine, TNF-α, IL-6 production. Also using human fibroblast cell to the procollagen production analysis and COL1A1 mRNA expression level analysis for defining, and for AQP-3 mRNA expression level analysis, used human keratinocyte cell. GLS increased procollagen production and COL1A1, AQP-3 mRNA expression. Our results suggest that the GLS have potential anti-inflammatory and wrinkle improves, skin moisture effect.