• 제목/요약/키워드: Fit issue

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Realtime Facial Expression Representation Method For Virtual Online Meetings System

  • Zhu, Yinge;Yerkovich, Bruno Carvacho;Zhang, Xingjie;Park, Jong-il
    • 한국방송∙미디어공학회:학술대회논문집
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    • 한국방송∙미디어공학회 2021년도 추계학술대회
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    • pp.212-214
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    • 2021
  • In a society with Covid-19 as part of our daily lives, we had to adapt ourselves to a new reality to maintain our lifestyles as normal as possible. An example of this is teleworking and online classes. However, several issues appeared on the go as we started the new way of living. One of them is the doubt of knowing if real people are in front of the camera or if someone is paying attention during a lecture. Therefore, we encountered this issue by creating a 3D reconstruction tool to identify human faces and expressions actively. We use a web camera, a lightweight 3D face model, and use the 2D facial landmark to fit expression coefficients to drive the 3D model. With this Model, it is possible to represent our faces with an Avatar and fully control its bones with rotation and translation parameters. Therefore, in order to reconstruct facial expressions during online meetings, we proposed the above methods as our solution to solve the main issue.

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A System Dynamics Approach for Making Group Decision

  • Kwahk Kee-Young;Kim Hee-Woong
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회/대한산업공학회 2003년도 춘계공동학술대회
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    • pp.958-965
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    • 2003
  • The rapidly changing business environment has required cooperation and coorduiation among functional units n organizations which should Involve group decision-making processes Although many group derision-making support tools and methods have provided the collaborative capabilities for organizational members, they often lack features supporting the dynamic complexity issue frequently occurring at group decision-making processes This study proposes system dynamics modeling as a group decision-making support tool to deal with the group derision-making tasks having properties of dynamic complexity in terms of cognitive fit theory.

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중소기업의 안전관리 대책 (Safety Management Countermeasure for Medium and Small-Enterprise)

  • 홍상우
    • 산업경영시스템학회지
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    • 제17권31호
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    • pp.187-201
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    • 1994
  • For settlement of safety supervision and prevention agains industry's accident, first, it needs to design and manufacture for safety of machines and tools, second, it must safety foundation of machines and tolls and sticking of safety facilities, third, it must be wear of protective device in operations. Then it needs to fit countermeasure founding and continuous safety education and itself inspection control that analysis and study the point at issue of safety.

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과업수행을 위한 소셜네트워크서비스(SNS)의 활용에 대한 연구: 과업-매체적합성을 중심으로 (Study on the Use of SNS(Social Network Service) for Tasks :Focus on the Task-Media Fit)

  • 박경자;박승준;장희영
    • 디지털융복합연구
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    • 제12권2호
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    • pp.577-586
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    • 2014
  • SNS가 사회전체에 미치는 영향이 커지면서 기업들도 SNS의 신속성, 공유성, 상호작용성 등에 관심을 갖고, 이를 어떻게 활용할 것인가에 대해 고민하기 시작했다. 본 연구도 SNS의 업무적 활용에 초점을 두고 과업 지원도구인 SNS와 과업과의 적합성, 사용자특성 그리고 성과와의 관계를 실증하고자 한다. 연구를 위해 과업-기술적합모형을 토대로 사회적 요소, 정보기술로서 SNS의 특성 그리고 사용자 특성을 고려하여 연구모형을 제안하였다. 연구결과 과업-매체 적합성에 직무특성, 가상능숙도, 매체특성 모두 유의한 영향관계를 가지며, SNS이용에는 가상능숙도와 SNS 특성 변수가 유의한 영향관계를 보였다. 또한 과업-매체 적합성은 SNS이용과 업무성과에, SNS이용은 업무성과에 유의한 영향을 미치는 것으로 나타났다. 본 연구를 통해 SNS의 전략적 활용은 업무성과 향상에 도움이 되며, SNS활용 전략 수립시에 개인특성이 고려되어야 함을 시사하고 있다.

개별여행객의 라이프스타일 유형에 따른 관광만족도, 재방문의도 및 추천의도의 차이 연구 - 방한 중국인 관광객을 중심으로 (Analysis on the Difference of Tourist Satisfaction and Intention of Revisiting and Recommendation to the Clusters of the FIT's Life Style - Focused on Chinese Tourists into Visiting Korea)

  • 이서요;이태희
    • 한국심리학회지 : 문화 및 사회문제
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    • 제21권3호
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    • pp.535-550
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    • 2015
  • 이 연구는 중국 개별여행객의 라이프스타일 유형을 파악하고 라이프스타일에 따라 관광만족도와 재방문 의도, 추천의도에 어떤 차이가 있는지, 관광만족도와 재방문 의도, 추천의도간 어떤 관계가 있는지 살펴보았다. 중국인 여행객의 라이프스타일에 분석결과, 방한 중국개별 여행객의 라이프스타일 군집 유형별로 관광만족도, 재방문 의도, 추천의도에 통계적으로 유의미한 차이를 보였다. 라이프스타일에 따른 군집간의 차이분석 등을 통해 총 6개의 가설이 모두 채택되었다. 이 논문의 결과가 방한 중국개별여행객을 대상으로 한국관광 상품개발과 중국개별여행객 유치 전략의 방향을 모색하는데 유용한 자료로 활용될 수 있을 것이다.

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스마트워크를 통한 직원 만족도와 업무 생산성 증대에 관한 연구 : 홈오피스 환경에서 (A Study on the Improvement of Smart Work Satisfaction and Productivity)

  • 이대형;조승연;김희웅
    • 정보화정책
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    • 제21권2호
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    • pp.24-48
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    • 2014
  • 마트폰 등 스마트기기의 확산으로 촉발된 스마트워크는 국내에서는 근로 시간 대비 낮은 노동 생산성 및 일과 삶의 조화, 저탄소 녹색성장 등의 사회적 논의와 맞물려 이슈화가 되고 있으며 모바일, 보안 및 클라우드 컴퓨팅 관련 IT기술의 발전으로 인한 업무 방식의 변화 또한 스마트워크에 대한 논의의 활성화를 뒷받침하고 있다. 그러나 일부 연구에서는 스마트워크에 대한 막연한 기대와 달리 기대하는 수준의 효과가 없을 것이라 지적하고 있다. 본 연구는 스마트워크 유형 중 홈오피스 방식의 스마트워크 도입 시 직원만족도와 생산성 증대에 미치는 요인들이 무엇인지 고찰하기 위해 실증연구를 실시하였다. 실제 홈오피스 도입 기업의 사용자 인터뷰와 사회-기술적 체계(socio-technical system) 접근기법을 기반 하여, 영향요인을 도출하고 홈오피스 근무자를 대상으로 설문을 실시하였다. 연구결과를 요약하면, 일과 삶의 균형, 홈오피스 업무-시스템적합도, 홈오피스-직무적합도가 홈오피스 만족도에 직접적인 영향을 미침을 확인하였고, 홈오피스-직무적합도와 홈오피스 만족도, 홈오피스 환경품질이 홈오피스 생산성에 직접적인 영향을 미치는 것으로 확인되었다.

How User's Participation in Feasibility Study Enhances Use of Business Intelligence Systems

  • Kim, Nam Gyu;Kim, Sung Kun
    • Journal of Information Technology Applications and Management
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    • 제24권3호
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    • pp.1-21
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    • 2017
  • Business Intelligence (BI) system is a strategic tool that presents an analytical perspective about business and external environments. Even though its strategic value was well known, users often avoid using it or adopt it ceremonially. In fact, over 50 per cent of BI projects worldwide are reported to end in failure. Such an unexpectedly lower success rate has been a key issue in BI studies. In order to enhance a proper use of information systems, MIS field provided a number of theoretical constructs. One example is Goodhue & Thompson's Task-Technology Fit (TTF). In addition, internalization, the degree to which people make their own effort to modify behavior, was recently suggested as another important determinant of use. Though in MIS community both TTF and internalization proved to be a key determinant of system use, there has been not much study aiming to discover antecedents influencing these constructs. In this study we assert that user participation should be highlighted in BI projects. Especially, we emphasize user participation at the phase of feasibility study that is mainly conducted to determine whether a BI system is essentially necessary and practicable. Our research model employs participative feasibility study as a major antecedent for TTF and internalization that consequently will lead to user satisfaction and actual use. This model was empirically tested on 121 BI system users. The result shows that user participation in feasibility study is positively associated with TTF and internalization, each being related to user satisfaction and system use. It implies that, if an organization has BI users get involved in strategic feasibility study phase, the BI system would turn out to fit users' tasks and, furthermore, users would put more efforts spontaneously in order to use it properly.

In Search of a Performing Seal: Rethinking the Design of Tight-Fitting Respiratory Protective Equipment Facepieces for Users With Facial Hair

  • Meadwell, James;Paxman-Clarke, Lee;Terris, David;Ford, Peter
    • Safety and Health at Work
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    • 제10권3호
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    • pp.275-304
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    • 2019
  • Background: Air-purifying, tight-fitting facepieces are examples of respiratory protective equipment and are worn to protect workers from potentially harmful particulate and vapors. Research shows that the presence of facial hair on users' face significantly reduces the efficacy of these devices. This article sets out to establish if an acceptable seal could be achieved between facial hair and the facepiece. The team also created and investigated a low-cost "pressure testing" method for assessing the efficacy of a seal to be used during the early design process for a facepiece designed to overcome the facial hair issue. Methods: Nine new designs for face mask seals were prototyped as flat samples. A researcher developed a test rig, and a test protocol was used to evaluate the efficacy of the new seal designs against facial hair. Six of the seal designs were also tested using a version of the conventional fit test. The results were compared with those of the researcher-developed test to look for a correlation between the two test methods. Results: None of the seals performed any better against facial hair than a typical, commercially available facepiece. The pressure testing method devised by the researchers performed well but was not as robust as the fit factor testing. Conclusion: The results show that sealing against facial hair is extremely problematic unless an excessive force is applied to the facepiece's seal area pushing it against the face. The means of pressure testing devised by the researchers could be seen as a low-cost technique to be used at the early stages of a the design process, before fit testing is viable.

편집자 주 - 30권 2호 (Editorial for Vol. 30, Issue 2)

  • 김영효
    • 항공우주의학회지
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    • 제30권2호
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    • pp.51-53
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    • 2020
  • In commemoration of Vol. 30, Issue 2, our journal prepared three review articles, two original papers, and a case report. The first review analyzed aircraft accidents caused by pilots' fatigue and presented a protocol to measure their fatigue, such as primary background survey, subjective drowsiness/arousal evaluation, sleep and activity log, sleep data, and performance measurement. The second review analyzed shift work patterns and work characteristics that may affect the fatigue of aviation mechanics. Also, desirable work principles for aviation mechanics (restrictions on working hours, appropriate rest hours, and night shift restrictions) were presented. The third review discussed the effects that allergic rhinitis can have on pilots (drowsiness and decreased arousal) and introduced a safe treatment method that can prevent these adverse effects. In the first original article, the ratio of 'incompatible (non-fit)' result in aerospace medical examination among Korean aircraft pilots for the past five years was investigated by age group and the common causes of nonconformity were analyzed. In the second original article, the prevalence, mortality, prevalence according to age groups, and regional characteristics of severe febrile thrombocytopenia syndrome were compared and analyzed in Korea and Japan for the past five years. Finally, in the case report, the cases of a patient diagnosed as gastrointestinal stromal tumors who received surgical treatment and chemotherapy were discussed, and the results of the judgment were presented.

국내 MIS 연구에서 구조방정식모형 활용에 관한 메타분석 (A Meta Analysis of Using Structural Equation Model on the Korean MIS Research)

  • 김종기;전진환
    • Asia pacific journal of information systems
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    • 제19권4호
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    • pp.47-75
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    • 2009
  • Recently, researches on Management Information Systems (MIS) have laid out theoretical foundation and academic paradigms by introducing diverse theories, themes, and methodologies. Especially, academic paradigms of MIS encourage a user-friendly approach by developing the technologies from the users' perspectives, which reflects the existence of strong causal relationships between information systems and user's behavior. As in other areas in social science the use of structural equation modeling (SEM) has rapidly increased in recent years especially in the MIS area. The SEM technique is important because it provides powerful ways to address key IS research problems. It also has a unique ability to simultaneously examine a series of casual relationships while analyzing multiple independent and dependent variables all at the same time. In spite of providing many benefits to the MIS researchers, there are some potential pitfalls with the analytical technique. The research objective of this study is to provide some guidelines for an appropriate use of SEM based on the assessment of current practice of using SEM in the MIS research. This study focuses on several statistical issues related to the use of SEM in the MIS research. Selected articles are assessed in three parts through the meta analysis. The first part is related to the initial specification of theoretical model of interest. The second is about data screening prior to model estimation and testing. And the last part concerns estimation and testing of theoretical models based on empirical data. This study reviewed the use of SEM in 164 empirical research articles published in four major MIS journals in Korea (APJIS, ISR, JIS and JITAM) from 1991 to 2007. APJIS, ISR, JIS and JITAM accounted for 73, 17, 58, and 16 of the total number of applications, respectively. The number of published applications has been increased over time. LISREL was the most frequently used SEM software among MIS researchers (97 studies (59.15%)), followed by AMOS (45 studies (27.44%)). In the first part, regarding issues related to the initial specification of theoretical model of interest, all of the studies have used cross-sectional data. The studies that use cross-sectional data may be able to better explain their structural model as a set of relationships. Most of SEM studies, meanwhile, have employed. confirmatory-type analysis (146 articles (89%)). For the model specification issue about model formulation, 159 (96.9%) of the studies were the full structural equation model. For only 5 researches, SEM was used for the measurement model with a set of observed variables. The average sample size for all models was 365.41, with some models retaining a sample as small as 50 and as large as 500. The second part of the issue is related to data screening prior to model estimation and testing. Data screening is important for researchers particularly in defining how they deal with missing values. Overall, discussion of data screening was reported in 118 (71.95%) of the studies while there was no study discussing evidence of multivariate normality for the models. On the third part, issues related to the estimation and testing of theoretical models on empirical data, assessing model fit is one of most important issues because it provides adequate statistical power for research models. There were multiple fit indices used in the SEM applications. The test was reported in the most of studies (146 (89%)), whereas normed-test was reported less frequently (65 studies (39.64%)). It is important that normed- of 3 or lower is required for adequate model fit. The most popular model fit indices were GFI (109 (66.46%)), AGFI (84 (51.22%)), NFI (44 (47.56%)), RMR (42 (25.61%)), CFI (59 (35.98%)), RMSEA (62 (37.80)), and NNFI (48 (29.27%)). Regarding the test of construct validity, convergent validity has been examined in 109 studies (66.46%) and discriminant validity in 98 (59.76%). 81 studies (49.39%) have reported the average variance extracted (AVE). However, there was little discussion of direct (47 (28.66%)), indirect, and total effect in the SEM models. Based on these findings, we suggest general guidelines for the use of SEM and propose some recommendations on concerning issues of latent variables models, raw data, sample size, data screening, reporting parameter estimated, model fit statistics, multivariate normality, confirmatory factor analysis, reliabilities and the decomposition of effects.