• Title/Summary/Keyword: Research-based

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Designing a Fuzzy Expert System with a Hybrid Approach to Select Operational Strategies in Project-Based Organizations with a Selected Competitive Priority

  • Javanrad, Ehsan;Pooya, Alireza;Kahani, Mohsen;Farimani, Nasser Motahari
    • Industrial Engineering and Management Systems
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    • v.16 no.1
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    • pp.129-140
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    • 2017
  • This research was conducted in order to solve the problem of selecting an operational strategy for projects in project-based organizations by designing a fuzzy expert system. In the current research, we first determined the contributing parameters in operational strategy of project-based organizations based on existing research literature and experts' opinion. Next, we divided them into two groups of model inputs and outputs and the rules governing them were determined by referring to research literature and educational instances. In order to integrate rules, the revised Ternary Grid (revised TG) and expert opinions were applied according to a hybrid algorithm. The Ultimate rules were provided in Fuzzy Inference System format (FIS). In this FIS, proper manufacturing decisions are recommended to the user based on selected competitive priority and also project properties. This paper is the first study in which rules and relations governing the parameters contributing operational strategy in project-based organizations are acquired in a guided integrated process and in the shape of an expert system. Using the decision support system presented in this research, managers of project-based organizations can easily become informed of proper manufacturing decisions in proportion with selected competitive priority and project properties; and also be ensured that theoretical background and past experiences are considered.

A Study on the Inquiry-Based Water Environmental Education Model with Watershed Concept: Focusing on the ENVISION Program (유역 개념을 중심으로 한 탐구 기반의 물 환경교육 모형에 관한 연구: ENVISION 프로그램을 중심으로)

  • Lee, Du-Gon
    • Hwankyungkyoyuk
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    • v.19 no.3
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    • pp.150-164
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    • 2006
  • This study reviewed a recently developed environmental education model 'ENVISION' and analyzed the value of the ENVISION program with environmental education(EE) perspective. Also this study proposed a prototype model of a inquiry-based water environmental education model with watershed concepts as a result of discussion of tills research. In the review of ENVISION, this research followed the theoretical framework of 'Inquiry-Based EE' that was previously proposed by the author. The ENVISION was characterized in tills research as two directions: watershed and scientific inquiry. Tills research argued that the watershed concept has a potentially very good meaning in EE because watershed enables 'holistic' view in EE area, and that the scientific inquiry in ENVISION seeks evidence-based explanation about local watershed environmental problems. That belongs to the scientific inquiry, which is also 'Inquiry-Based EE' and has internal value under EE perspective. Finally, this research proposed a prototype EE model that is about watershed concept, and is based on inquiry as general sense (scientific and insightful inquiries) and 'Environmental Studies for EE, (ESEE)' as the inquiry directions. The proposed model can be said a combination of the watershed concept and inquiry-based EE, and it seems that the model materializes better the EE nature than the ENVISION model.

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The Learning Styles and Curriculum for Environmental Experience-Based Learning in Classroom of the Small Scale (소규모 학급의 환경 체험 학습을 위한 학습 유형화와 그 교육 과정)

  • Kwak, Hong-Tak;Lee, Ok-Hee
    • Hwankyungkyoyuk
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    • v.19 no.3
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    • pp.40-56
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    • 2006
  • The purpose of this study is to enhance elementary students' awareness of environment-friendly life and help them to prepare for a better life in the future. To achieve this purpose we examined the effect typical environmental experience-based learning activities, which were based on the local circumstances with high environmental-educational potential, have on the attitudes toward environment-friendly life. This study was carried out on the basis of typical environmental experience-based learning in the small class size. The research group used was composed of one sixth grade elementary school class called Sangroksu, whose total students were 9. The research period lasted from March 2005 to February 2006. To analyze the result of this study, two research methods were applied simultaneously : quantitative research methods and qualitative research methods. Especially statistical analysis in quantitative research methods by self-administrated questionnaire was done with SAS program. Qualitative research methods were analyzed in a cyclic pattern, including the processes of domain analysis, classification analysis, and factor analysis which continued to be associated with data-collecting methods. This research shows the following results. First of all, students have shown meaningful differences after typical environmental experience-based learning activities.(p<.05). Followings are fields of the differences - students‘ interest on the subject, their understanding levels of necessity for basic environmental facilities around us as well as for the kinds of environmental experience-based learning, awareness levels of various environmental problems, consciousness on environment conservation, and the practicing ability of environment - friendly lifestyles. Secondly, We have discovered improvements in the following fields after this study - the knowledge and understanding levels on our environment and human relationships, students' fundamental abilities to work out environmental problems, right ideas and appropriate attitudes on environment protection, the practicing ability of environment-friendly life styles, and their parents' understanding levels on the education related to environment. In conclusion, typical environmental experience-based learning activities have a positive effect on the improvement of elementary school students' environment-friendly life styles.

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Anti-inflammatory Effects of Sam-chul-kun-bi-tang

  • Lee, Jin-Ah;Ha, Hye-Kyung;Jung, Da-Young;Lee, Ho-Young;Lee, Nam-Hun;Lee, Jun-Kyoung;Huang, Dae-Sun;Shin, Hyeun-Kyoo
    • The Journal of Korean Medicine
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    • v.31 no.3
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    • pp.47-54
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    • 2010
  • Objective: To derive information on the efficacy of Sam-chul-kun-bi-tang (SKT), by evaluating its anti-inflammatory effect. SKT is a widely-used herbal formula in traditional Korean medicine. In man y studies, plant-derived anti-inflammatory efficacies have been investigated for their potential inhibitory effects on lipopolysaccharide (LPS)-stimulated macrophages. This study was performed to examine the anti-inflammatory effects of SKT extract on LPS-stimulated RAW 264.7 cells. Methods: The production of nitric oxide (NO), prostaglandin $(PG)E_2$, tumor necrosis factor (TNF)-$\alpha$ and interleukin (IL)-6 were examined in a macrophage cell line, RAW 264.7 cells, in the presence of SKT. RAW 264.7 cells were incubated with LPS 1 ${\mu}g/mL$ and SKT for 18 hrs. The anti-inflammatory activity of SKT was investigated by carrageenan-induced paw edema in rats. The paw volume was measured at 2 and 4 hrs following carrageenan-induced paw edema in rats. Results: SKT showed inhibitory effect on $PGE_2$, TNF-$\alpha$ and IL-6 in LPS-stimulated RAW 264.7 cells. But SKT was not inhibitory effect on NO by LPS-stimulated RAW 264.7 cells. Administration of SKT (1 g/kg) also showed a reduction in carrageenan-induced paw edema on rats. Conclusion: These results suggest that SKT has anti-inflammatory activities in both in vitro and in vivo models.

Efficient hardware implementation and analysis of true random-number generator based on beta source

  • Park, Seongmo;Choi, Byoung Gun;Kang, Taewook;Park, Kyunghwan;Kwon, Youngsu;Kim, Jongbum
    • ETRI Journal
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    • v.42 no.4
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    • pp.518-526
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    • 2020
  • This paper presents an efficient hardware random-number generator based on a beta source. The proposed generator counts the values of "0" and "1" and provides a method to distinguish between pseudo-random and true random numbers by comparing them using simple cumulative operations. The random-number generator produces labeled data indicating whether the count value is a pseudo- or true random number according to its bit value based on the generated labeling data. The proposed method is verified using a system based on Verilog RTL coding and LabVIEW for hardware implementation. The generated random numbers were tested according to the NIST SP 800-22 and SP 800-90B standards, and they satisfied the test items specified in the standard. Furthermore, the hardware is efficient and can be used for security, artificial intelligence, and Internet of Things applications in real time.

An Exploratory Research on Intellectual Capital Management: Case Study for A Research Institute (지적자본경영 전망에 관한 탐색적 연구: A연구원 사례를 중심으로)

  • Kim, Su Jung;Kim, Seung Chul
    • Knowledge Management Research
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    • v.12 no.4
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    • pp.91-119
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    • 2011
  • Compared to the industrial society, the knowledge-based economy of the 21st century has placed importance on intellectual capital as a sustainable competitive advantage of an organization. The ownership, creation, and interaction of intellectual capital is emerging as the main challenges of the management and, moreover, it might extend to the issue of intellectual capital management. This research found that the exploitation and sharing of knowledge was more efficient in a networked organization through a case study for A research institute, which attempted intellectual capital management domestically for the first time. The contribution of this exploratory research is to suggest new perspectives on the ownership of intangible asset, the evaluation of knowledge-based product, and the competitive advantage and complementarity of an organization in the knowledge-based economy. The limitation is that this research is just exploratory due to the inaccessibility of data. If the intellectual capital management would be more common, the diverse researches should be empirically carried out.

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Study on IED Engineering Method based on IEC 61850 (IEC 61850 기반 IED 엔지니어링 기법에 관한 연구)

  • An, Yong-Ho;Kim, Yong-Hak;Jang, Byung-Tae;Lee, Nam-Ho;Han, Jeong-Yeol;Lee, You-Jin;Shim, Eung-Bo;Cho, Jin-Hyuk
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.778-779
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    • 2011
  • Recently, IED engineering method in home and abroad require high ability of expert based on IEC 61850 since IED engineering has been carrying out based on text. In this paper, Proposed easy IED engineering method is able to provide best solution to without specialized knowledge about IEC 61850. Also, This paper deals with easy method in order to provide to accomplish using SLD(single line diagram) and SSD(system specification description) file based on SLD.

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Adaptive and optimized agent placement scheme for parallel agent-based simulation

  • Jin, Ki-Sung;Lee, Sang-Min;Kim, Young-Chul
    • ETRI Journal
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    • v.44 no.2
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    • pp.313-326
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    • 2022
  • This study presents a noble scheme for distributed and parallel simulations with optimized agent placement for simulation instances. The traditional parallel simulation has some limitations in that it does not provide sufficient performance even though using multiple resources. The main reason for this discrepancy is that supporting parallelism inevitably requires additional costs in addition to the base simulation cost. We present a comprehensive study of parallel simulation architectures, execution flows, and characteristics. Then, we identify critical challenges for optimizing large simulations for parallel instances. Based on our cost-benefit analysis, we propose a novel approach to overcome the performance constraints of agent-based parallel simulations. We also propose a solution for eliminating the synchronizing cost among local instances. Our method ensures balanced performance through optimal deployment of agents to local instances and an adaptive agent placement scheme according to the simulation load. Additionally, our empirical evaluation reveals that the proposed model achieves better performance than conventional methods under several conditions.

Technology Planning-Based Management for the Dissemination of R&D Outcome of Government Supported Research Institutes

  • Choe, Kyungil
    • Industrial Engineering and Management Systems
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    • v.6 no.1
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    • pp.49-54
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    • 2007
  • This study deals with technology planning-based management for Basic R&D Programs of government supported research institutes (GRIs). The Korean Research Council for Industrial Science and Technology which consists of major GRIs needs to implement new government policies which focus on the dissemination of R&D outcome, collaborative research, and performance-oriented R&D investment. The major characteristics of technology planning-based management include the hierarchy of market-oriented technology plans and the valuation of core technologies. We also suggest technology classifications and project network diagrams.

The Development of ORED, a Web-Based Educational System for Operations Research (웹 기반 경영과학 교육 시스템 ORED의 개발)

  • 박순달;임성묵;도승용;이승석;김호동
    • Korean Management Science Review
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    • v.19 no.1
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    • pp.89-106
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    • 2002
  • ORED is a Web-Based educational system for operations research. It consists of operations research theories, help system for theories, cases, application programs and management system. Users can study theories and cases through HTML documents and solve Problems with java applet and servelet programs. The help system provides users with detailed explanations of theories. And the management system provides the administrator with efficient tools necessary for managing the ORED In the Web.