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A Comparison of Embodied Energy and Environmental Impacts between the Steel-Structured and Wall-typed Apartment Housing (철골조와 벽식조 공동주택의 환경영향 비교 연구)

  • 이강희
    • Journal of the Korean housing association
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    • v.15 no.3
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    • pp.83-91
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    • 2004
  • In a planning stage, the assessment system is required to select the proper alternative, reflected the environmental affects such as energy, $CO_2$ and $SO_x$. Unit of energy consumption, $CO_2$ emission and $SO_x$ emission among various assessment systems could be effectively utilized to select the better alternative among various building types. But researches for these areas has not been conducted systematically, but limitedly and sporadically. In this paper, it aimed at providing the unit of energy consumption, $CO_2$ emission and $SO_x$ emission to evaluate the environmental affects between the steel-structured apartment building and wall-typed apartment building. For this, the input-output analysis could be utilized in the construction stage with two-type apartment housing. This approach can be utilized to compare the various alternatives in aspect of the energy consumption and the environment affect, and to select the relatively better alternative. This study found that the unit of energy, $CO_2$ and $SO_x$ of the steel-structured apartment building is lower than that of the wall-typed building

Developing a Healthy Korean Food Menu through Sikryochanyo (한식 건강 메뉴의 선정 및 "식료찬요"를 통한 효능성 연구)

  • Chung, Hae-Kyung;Kim, Mi-Hye;Kim, Hang-Ran;Chung, Hea-Jung;Woo, Nariyah
    • The Korean Journal of Food And Nutrition
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    • v.24 no.1
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    • pp.37-53
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    • 2011
  • The objective of this study was to prepare the base on which Korean food can become a globally important health food. A focus group interview was conducted with a nutritionist and professor of food and nutrition to select the Korean food for a healthy menu. Five main categories were established to select a healthy menu based on the Korean food philosophy, including Korean food made from beans, Korean food made using fermentation, Korean food made using various colors, Korean food with high dietary fiber, and Korean food made with abundant unsaturated fatty acids. The 52 healthy menu items selected based on these standards were composed of easily available food materials. The efficacy of food materials described in Sikryochanyo, the traditional Chosun dietary therapy, was checked to verify the efficacy of this healthy menu. This study demonstrated that basic materials can be efficiently used to enable citizens to select Korean food as an international health food. As such, the results can be utilized to publicize Korean food as a healthy food.

An AHP Approach to Select the Technique to Improve the Manufacturing Performance in Shipbuilding Enterprise (AHP에 의한 조선기업의 생산성과 향상기법의 선택)

  • Kim, Tae-Soo;Lee, Kang-Woo
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.29 no.4
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    • pp.43-50
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    • 2006
  • The objective of this research is to select the most effective technique from AMT (Advanced Manufacturing Technologies) and IMP (Innovative Management Practices) for improving manufacturing performance in shipbuilding enterprises. The research consists of several principal steps. The first step is to design critical criteria in evaluating manufacturing performance in shipbuilding enterprises. The second step is to develop sub-criteria of the critical criteria. The third step is to develop a four level AHP (Analytic Hierarchy Process) structure using the critical criteria, sub-criteria and techniques from AMT and IMP. The fourth step is to develope the pairwise comparison matrix by each level of AHP structure, which was based on survey data collected at the H heavy industry. And the last step is to select the most effective technique from AMT and IMP by using AHP analysis. The results of AHP analysis did not show clear difference in priority between techniques of AMT and IMP in terms of manufacturing performance of the shipbuilding enterprise. Thus, each critical criterion was assigned modified weights and examined the priority change of techniques by conducting performance sensitivity analysis.

Polynomial Time Algorithm for Worker Assignment Problem (작업자 배정 문제의 다항시간 알고리즘)

  • Lee, Sang-Un
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.22 no.5
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    • pp.159-164
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    • 2022
  • The linear assignment problem (LAP) and linear bottleneck assignment problem (LBAP) has been unknown the algorithm to solve the optimal solution within polynomial-time. These problems are classified by NP-hard. Therefore, we can be apply metaheuristic methods or linear programming (LP) software package or Hungarian algorithm (HA) with O(m4) computational complexity. This paper suggests polynomial time algorithm with O(mn)=O(m2),m=n time complexity to LAP and LBAP. The select-delete method is simply applied to LAP, and the delete-select method is used to LBAP. For the experimental data without the unique algorithm can be apply to whole data, the proposed algorithm can be obtain the optimal solutions for whole data.

A Case Study of Problem-Based Learning and Action Learning at a University

  • CHANG, Kyungwon
    • Educational Technology International
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    • v.11 no.1
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    • pp.145-169
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    • 2010
  • Many universities are searching for educational methods to cultivate problem-solving ability and cooperative learning ability or already trying to implement them. Problem Based Learning(PBL) and Action Learning(AL) are effective teaching and learning methods to cultivate men of talent qualified for problem-solving and cooperative learning abilities that universities are seeking after. PBL and AL have something in common in that learning is accomplished while learners are solving the authentic problem. But, in spite of this similarity, PBL and AL have differences. However, most literatures and cases on these two models introduce only the outline of commons and differences and do not provide teachers with actual helping aids to select a model appropriate for the actual design or operation of classes. Accordingly, many teachers usually select and utilize a familiar model rather than select a proper model to the nature of a subject and the educational goal. Teaching and learning methods or learning environment should be selected appropriately to the educational goal. This study indicates the characteristics of PBL and AL that are being introduced and utilized as a principal teaching and learning method of college education and then shows how this method can be realized in the university by comparing the cases of classes applied in two methods.

A Study on Offshore Wind Farm Development through a Review of Floating Offshore Wind Power Project Cases in Norway (부유식 해상풍력 개발사례를 통한 해상풍력단지 조성 방안 연구 - 노르웨이 사례를 중심으로)

  • Taeyun Kim;Jun-Ho Maeng
    • Journal of Wind Energy
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    • v.14 no.2
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    • pp.14-25
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    • 2023
  • This study focuses on proposing measures for the reasonable development of offshore wind farms using the case of Norway, which was the first nation in the world to build a floating offshore wind farm of 80 MW or more. Norwegian authorities conducted a strategic environment assessment in 2012 to select offshore wind farm sites, discovered 15 potential sites, and finally decided on two designated sites in 2020. Based on various survey data such as seabirds, marine environment, and fishing activities, scientific-based spatial analysis was conducted to select additional offshore wind farm sites in line with future development plans. In addition, a government-led steering committee and advisory group have established marine spatial plans since 2002. Therefore, it will be possible to listen to and coordinate the opinions of stakeholders by using the steering committee and advisory group for offshore wind power development. By examining the case of Norway, we suggest the following policy points that can achieve carbon neutrality and develop sustainable offshore wind farms: 1. Establish a government-led steering committee and advisory group that can select potential sites for offshore wind farms by coordinating the opinions of stakeholders 2. Induce efficient and sequential offshore wind farm development by using various survey data and scientific-based spatial analysis.

The Effect of the Consumption Values and Bakery Select Properties on Satisfaction (소비가치에 따른 베이커리 선택속성이 만족도에 미치는 영향)

  • Lee, Sang-Jin;Kim, Seong-Su;Ju, Byeong-Chel
    • Culinary science and hospitality research
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    • v.22 no.3
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    • pp.33-43
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    • 2016
  • This study examined the factors that affect the relationship between consumption value, bakery select properties and satisfaction. A total of 320 questionnaires were distributed to consumers, of which 300 were deemed suitable for analysis after the removal of 20 unusable responses. In order to perform required statistical analyses in the study, the SPSS 18.0 Statistical Program was used for frequency analysis, factor analysis, reliability analysis, correlations, and regression analysis. The results of exploratory factor analysis showed that four factors regarding consumption value were extracted from all measurements with a KMO of 0.841 and a total cumulative variance of 72.937%, With regard to bakery select property, one factor was extracted with a total cumulative variance of 64.917% and a KMO score of 0.756. One factor for satisfaction was extracted that accounted for a total cumulative variance of 76.944% and a KMO score of 0.719. All factors were significant to 0.000 and the correlation between variables was significant. Thus, based on the results, the main research hypothesis that identifies the relationship between consumption value, bakery select property and satisfaction was partially adopted.

A Study for Selecting the Design Number of Gyration of Gyratory Compactor (선회다짐기의 설계 다짐횟수 선정을 위한 연구)

  • Kim, Boo-Il;Lee, Moon-Sup
    • International Journal of Highway Engineering
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    • v.9 no.4
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    • pp.227-236
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    • 2007
  • The design number of gyration is required in the process of asphalt mix design using gyratory compactor. The purpose of this study is to select the design number of gyration for asphalt mix design in the laboratory. Three types of methods were used to select the design number of gyration. The first method is to select the gyration number which gives the same density with the mixtures compacted with 75 blows of Marshall Compaction. The second method is to select the gyration number which gives the same deformation strength with the mixtures compacted with 75 blows of Marshall Compactor. The third method is to select the gyration number which meet the 4% air voids. Ten mixtures, one type of aggregate(granite), one type of asphalt binder(pen. 60-80), and 10 types of gradation, were prepared for the laboratory tests. As a result, 100 number of gyration was selected for the design number of gyration of the asphalt mix design. This result shows a similar trend with the design number of gyration used in the foreign countries. Thus, the design number of gyration selected in this study can be used for the asphalt mix design using the gyratory compactors.

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