• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1202-1208
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• 2022

Techniques based on computer vision are becoming increasingly important in construction safety monitoring. Using AI algorithms can automatically identify conceivable hazards and give feedback to stakeholders. However, the construction site remains various potential hazard situations during the project. Due to the site complexity, many visual devices simultaneously participate in the monitoring process. Therefore, it challenges developing and operating corresponding AI detection algorithms. Safety information resulting from computer vision needs to organize before delivering it to safety managers. This study proposes a framework for computer vision-aided construction safety monitoring using collaborative 4D BIM information to address this issue, called CSM4D. The suggested framework consists of two-module: (1) collaborative BIM information extraction module (CBIE) extracts the spatial-temporal information and potential hazard scenario of a specific activity; through that, Computer Vision-aid Safety Monitoring Module (CVSM) can apply accurate algorithms at the right workplace during the project. The proposed framework is expected to aid safety monitoring using computer vision and 4D BIM.

• International Journal of Industrial Entomology and Biomaterials
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• 제27권1호
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• pp.166-179
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• 2013

In India, forest based insect enterprises has never been linked up with any forest management activity, either as a forest conservation strategy or to reduce the poverty in forested area. This investigation indicated that when forest dependent people are associated with forest insect industry (FII) like forest sericulture, lac culture or apiculture; this income generating activity links livelihood with forest conservation, and generates a viable model of collaborative forest management (CFM). In this model different stakeholders work together as a coherent entity for unified goal of managing the forest for well-being of the poor people in fringe areas. Article summaries and evaluates the prospect of India specific forest insect industry, and discusses how and to what extent integration of FII could be a viable livelihood component in CFM to conserve the forest and insect biodiversity. We analysed a case study on forestbased rearing of tropical tasar silkworm rearing in Central India from CFM perspective. Arguments in this communication are intended to provide forest managers and policy-makers with necessary input to consider location specific FII in CFM mode to provide a continuous source of small income to forest dependent people to ensure long lasting success of their forest management endeavours.

• Journal of Ginseng Research
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• 제43권4호
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• pp.600-605
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• 2019

Background: The leaves and roots of Panax ginseng are rich in ginsenosides. However, the chemical compositions of the leaves and roots of P. ginseng differ, resulting in different medicinal functions. In recent years, the aerial parts of members of the Panax genus have received great attention from natural product chemists as producers of bioactive ginsenosides. The aim of this study was the isolation and structural elucidation of novel, minor ginsenosides in the leaves of P. ginseng and evaluation of their antiinflammatory activity in vitro. Methods: Various chromatographic techniques were applied to obtain pure individual compounds, and their structures were determined by nuclear magnetic resonance and high-resolution mass spectrometry, as well as chemical methods. The antiinflammatory effect of the new compounds was evaluated on lipopolysaccharide-stimulated RAW 264.7 cells. Results and conclusions: Two novel, minor triterpenoid saponins, ginsenoside $LS_1$ (1) and 5,6-didehydroginsenoside $Rg_3$ (2), were isolated from the leaves of P. ginseng. The isolated compounds 1 and 2 were assayed for their inhibitory effect on nitric oxide production in LPS-stimulated RAW 264.7 cells, and Compound 2 showed a significant inhibitory effect with $IC_{50}$ of $37.38{\mu}M$ compared with that of NG-monomethyl-L-arginine ($IC_{50}=90.76{\mu}M$). Moreover, Compound 2 significantly decreased secretion of cytokines such as prostaglandin $E_2$ and tumor necrosis factor-${\alpha}$. In addition, Compound 2 significantly suppressed protein expression of inducible nitric oxide synthase and cyclooxygenase-2. These results suggested that Compound 2 could be used as a valuable candidate for medicinal use or functional food, and the mechanism is warranted for further exploration.

• 통상정보연구
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• 제7권2호
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• pp.115-137
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• 2005

E-trade is important that SMEs can do international business with activity. However, SMEs are facing psychological and economic barriers to e-trade. Therefore, SMEs depend on intermediaries for e-trading. In this context, APEC carried out the APEC Global B2B Interoperability Project to promote e-trade and increase benefits for member countries from 2002 to 2004. Especially this project emphasizes a collaboration with e-marketplaces. It has significance in that it is a new model to help SMEs do international trade. This study analyzes the APEC project in terms of technology and business and evaluates the project as a collaborative business model.

• 대한수학교육학회지:수학교육학연구
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• 제8권2호
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• pp.621-634
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• 1998

Emthusiasm about the introduction of computers into mathematics education is widespred. But, the perspectives about the relationship between mathematics education and computer are diverse. The purpose of this study is to examine theoretical background for using computers in mathematics education. In spite of the pedagogical possibilities of computers. only a small minority of mathematics teachers are using computers in mathematics classroom. It is natural to seek this obstacles within theoretical background of the teachers who manage computers, In this study, We discuss the problems in the two sides. First, due to increased computer activity, relationship of mathematics in school with mathematics in society is changing. It is tension between academic mathematics and practical mathematics. School mathematics have to be changed toward stressing practical mathematics. Second problem is the dialectical relationship between the individual and the collective. While maintaining a respect for the individuality of student contributions. We take into account the social dimension of mathematical meaning-making. We discussed theoretical clarification of work collaborative learning. We propose the case study for the roles of computer in collaborative mathematics learning.

• Nuclear Engineering and Technology
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• 제51권3호
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• pp.683-691
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• 2019

In this paper, we propose a novel method to quantify the neural synchronization between subjects in the collaborative process through electroencephalogram (EEG) hyperscanning. We hypothesized that the neural synchronization in EEGs will increase when the communication of the operators is smooth and the teamwork is better. We quantified the EEG signal for multiple subjects using a representative EEG quantification method, and studied the changes in brain activity occurring during collaboration. The proposed method quantifies neural synchronization between subjects through bispectral analysis. We found that phase synchronization between EEGs of multi subjects increased significantly during the periods of collaborative work. Traditional methods for a human error analysis used a retrospective analysis, and most of them were analyzed for an unspecified majority. However, the proposed method is able to perform the real-time monitoring of human error and can directly analyze and evaluate specific groups.

• 한국보육지원학회지
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• 제11권1호
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• pp.269-287
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• 2015

본 연구는 유아교사들이 인식하는 구성주의 교육 신념에 따라 유아 협동 활동에 대한 관심도와 실태가 상이한지를 알아보는데 목적이 있다. 연구 대상은 부산광역시 소재 유아교육기관에 근무하는 담임교사 210명이었으며, 이들을 대상으로 구성주의 교육신념을 측정하고 유아 협동 활동에 대한 관심도 및 실천수준을 조사하였다. 교사의 구성주의 신념에 따른 관심도 및 실천수준을 알아보기 위해 구성주의 신념 점수를 상, 중, 하로 구분한 후, ${\chi}^2$검증, 일원변량분석(ANOVA), Scheff$\acute{e}$ 검증을 실시하였다. 분석 결과, 구성주의 교육 신념이 높은 집단이 낮은 집단에 비해 유아 협동 활동에 대한 관심도와 실천 수준이 높은 것으로 나타났다. 본 연구 결과를 토대로 유아 협동 활동에 관한 체계적인 교사교육은 물론 교사들의 구성주의 교육신념을 형성 강화시키는 것이 유아교육현장에서의 유아 협동 활동을 활성화시킬 수 있는 하나의 방편이 될 수 있음을 제언하였다.

• 융합정보논문지
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• 제11권7호
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• pp.91-103
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• 2021

지식경영이 조직의 중요한 역량으로 인식되면서, 조직들은 지식경영 정책, 기술 등에 지속적으로 투자를 하고 있다. 지식경영은 조직원의 핵심 지식에 대한 공유가 선제적으로 요구되나, 지속적인 지식경영 활동을 위한 공유 활동이 이루어지지 못하고 있다. 본 연구의 목적은 조직의 협력적 커뮤니케이션을 통한 상호 교환 노력이 구성원의 지식공유 의도에 미치는 영향을 검증하는 것이다. 연구는 지식경영 정책을 도입한 조직의 근로자들을 대상으로 설문을 하였으며, 326개의 표본을 구조방정식모델링에 적용하여 연구 가설을 검증하였다. 분석 결과, 협력적 커뮤니케이션 구성 요인(합리성, 상호 피드백, 공식성)이 지식공유 의도에 긍정적 영향을 주었으며, 업무 상호의존성과 지식 영역성이 협력적 커뮤니케이션과 지식공유 의도 간의 관계를 조절하였다. 연구는 구성원의 지식공유 향상을 위해 조직이 추진해야 할 활동 전략을 제시하였다는 측면에서 시사점을 가진다.

• 한국컴퓨터정보학회논문지
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• 제28권5호
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• pp.75-82
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• 2023

협력 필터링 시스템에서 추천 리스트의 고객 만족도를 위하여 시스템이 산출하는 항목 평가 예측치는 매우 중요하다. 시간 인지 기반 시스템에서는 사용자들의 평가 시간을 반영하여 예측치를 산출하는데, 대개 과거 평가치일수록 기하급수적으로 낮은 가중치를 부여하였다. 본 연구에서는 평가치에 대한 평가 시간의 영향력이 다양한 요인에 따라 달라지는지 알아 보기 위하여, 사용자의 평가 적극성 정도, 항목의 인기도, 그리고 항목 장르별로 사용자 평가치와 평가 시간의 상관도를 조사하였다. 두 종류의 공개 데이터셋을 활용한 분석 결과, 특히 희소 데이터셋에서 각 요인에 따라 현저히 다른 상관지수 값을 얻었다. 따라서 평가 예측치에 대한 평가 시간의 영향력의 크기는 평가 데이터 밀집도 뿐만 아니라 상기한 여러 가지 요소를 고려하여 다르게 책정되어야 한다는 사실을 확인하였다.

• 산업경영시스템학회지
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• 제35권3호
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• pp.16-23
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• 2012

Large corporations and small and medium-sized enterprises businesses have tried finding cooperative partner models through win-win activity. In this study, certain factors were researched, which affect on the achievements by win-win activity of large corporative and SMEs from a standpoint of development by SMEs, the establishment of confidence, technical innovation and competence of value chain competence in order to enforce supplying value under the win-win activity. The result of this research presents that the achievement of win-win activity by large corporations and SMEs is related positively to developmental capability, cooperative culture, developmental innovation, innovation of process, outer technological innovation and value chain.