• Title/Summary/Keyword: previous experiences

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The pilot study on reclamation of incineration ashes of municipal waste in the demonstrative factory

  • Chang Hui-Lan;Liaw Chin-Tson;Leu Ching-Huoh
    • 한국지구물리탐사학회:학술대회논문집
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    • 2003.11a
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    • pp.573-580
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    • 2003
  • In Taiwan there are 21 Municipal Solid Waste Incinerators (MSWI) built to treat 80% of the MSW nationwide. Approximately 2,000 tons of incineration ashes of municipal waste contain reaction ash and fly ash (3:1 by weight)will be produced daily, and this may cause a serious waste problem. According to EPA regulations, reaction ash and fly ash produced after incineration should be properly treated. Landfill capacity barely meets the general demands. More efficient actions should be planned and taken. The study found 'reclamation' should be the optimal solution to this problem. Only limited research and previous successful experiences are available among other countries. An incinerator in Northern Taiwan is chosen for this study to make environmental bricks from the reaction ash and fly ash. From the previous tests, the results of strength test were measured. From the previous test results, the fly ash products have not reached the desired strength; hence, reaction ash is chosen for further pilot study. In the experiment, incineration ashes, cement and gravel are mixed in the ratio of 1:1:1(by weight), to ground concretization aggregate and pelletization aggregate, the concrete products made from the aggregates were of the strength of 108 $kgf/cm^2$ and 142 $kgf/cm^2$ individually. For the purpose of making nonstructural walls which met the State Building Standards. In the study, 50 tons of concrete products was yielded from aggregate and environmental bricks. Further observation and supervision are recommended to ascertain the resource recycling and reclamation. EPA has planned to build three 'Recycling Plants' in northern, middle and southern Taiwan to develop efficient techniques to produce concrete products, sub-base course, soundproofing wall, gravel, artificial fishing reefs, tiles, drainage, bricks and etc. This experiment of the demonstrative plant solves the problem of the incineration ashes and opens another opportunity to reclaim them.

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Impulsive Buying Types Related to Cable TV Home-Shopping Usage Characteristics in Apparel Product Buying (의류제품 구매 시 케이블 TV 홈쇼핑 이용특성에 따른 충동구매유형에 관한 연구)

  • Lee, Yun-Kyung;Park, Jae-Ok;Ahn, Min-Young
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.11
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    • pp.1669-1679
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    • 2008
  • This study examined what differences were shown in the types of impulsive buying according to consumers' viewing circumstance, previous purchasing experience, and demographic factors on CATV home-shopping. For this study, data were obtained from adult women in twenties to fifties who have frequently viewed CATV home-shopping. The questionnaire was composed of three sections; characteristics of home-shopping usage, behaviors of impulsive buying and demographic factors. Data from 403 questionnaires were used for the statistical analysis. The results of this study were as following. First, four factors of impulsive buying types were identified. Second, differences in impulsive buying according to viewing circumstance of TV home-shopping were significant. New products were easily accepted by consumers who were reminded of previous needs with more viewing time and frequent viewing chances. Also, differences in impulsive buying according to the reason of viewing were meaningful only for the 'reminder impulsive buying. Third, consumers with more previous purchase experiences had higher reminder impulsive buying on home-shopping. Fourth, there were significant differences in age and marital status according to impulsive buying. The biggest difference was shown in the 'planned impulsive buying' corresponding to age and in the 'reminder impulsive buying' to marital status.

A Study on the Revision of Man-day Cost Calculation Method for Information and Communication Facilities Construction Supervision (정보통신설비공사 감리대가 품셈개정에 관한 연구)

  • Lee, Jin-Ho;Kang, Byeong-Gwon
    • Journal of Convergence for Information Technology
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    • v.10 no.2
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    • pp.1-8
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    • 2020
  • The standardized procurement of supervisory cost for the construction of domestic Information and Communication Technology(ICT) facilities, which is announced by the Korea Engineering and Construction Association in May 2009, has been applied in the public institutions and private industries. However, the previous standardized procurement is not widely applied in recent years because the ICT and social economic environment have been rapidly changed and the previous equations to calculate the supervisory cost is not simplified. As results, the needs for a new standardized procurement has been increased and the Ministry of Industry, Commerce and Energy has published a notice with new standard procurement. In this paper, we provide the explanation of the background and the derivation process of the notice based on authors' experiences of project participation. As research method, we compare the previous mad-day cost of ICT construction and that of another area including electric facility construction, and then we explain a new procurement equation based on WBS(Work Breakdown Structure).

An Experimental Study on the Increase of the Bearing Capacity on Sandy Ground due to Micropile Reinforcement (마이크로파일로 보강된 모래지반의 지지력 증가효과에 관한 실험적 연구)

  • 김정동;임종철;이태형
    • Proceedings of the Korean Geotechical Society Conference
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    • 2003.03a
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    • pp.411-416
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    • 2003
  • As rapid industrialization continues in these days, construction in the down town areas increases. Since constructions are performed around old and existing structures, the need to provide reinforcements to protect the existing structures from collapse and damage arises. Furthermore, if the construction is to take place in the down town area, difficult work space and damage caused by noise, vibration and collapse of structure can't be ignored. Among the remedial measures available today, micropile reinforcement is considered the best method to remedy these problems. But up to the present the characteristics of micropiles and ground behaviour has not been proven and no standard design is not yet available. Therefore, most design are performed based on previous experiences. In this study, the difference in the bearing capacity with changing reinforcement angle, space and sphere around foundation was monitored. These results were induced to broaden heighten the limits of micropile application.

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The Study on Compulsive Buying as Self-Defeating Behavior : Focused on Social Exclusion Factor

  • HAN, Woong-Hee
    • East Asian Journal of Business Economics (EAJBE)
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    • v.8 no.2
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    • pp.57-68
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    • 2020
  • Purpose - This study investigated the effect of the social exclusion experience on the compulsive buying tendency. The purpose of current study is to examine the mechanism through compulsive buying, one of selfdefeating behaviors. While previous studies on compulsive buying focused only on the mechanism of psychological escapism to overcome negative emotions, this study intends to expand the study on the causes of compulsive buying by presenting a social exclusion experience as one of the causes of negative emotions. Research design and methodology - Present study was performed with 114 university students. Participants were assigned to one of two groups at random - the social exclusion experience group and the social exclusion nonexperience group. Authors analyzed the influence of social exclusion experience on the compulsive buying. Results - The social exclusion experience group showed compulsive buying tendency than the social exclusion non-experience group. Conclusions - People with social exclusion experiences avoid self-awareness and show cognitive narrowing, which leads to compulsive buying. Academic implications and practical implications of current research were discussed and the limitations were suggested.

Treasury Stock Sales and Management Rights Protection: Conflicts of Interest between an Owner-manager and Small Shareholders

  • CHO, SUNG ICK
    • KDI Journal of Economic Policy
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    • v.39 no.3
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    • pp.63-98
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    • 2017
  • This paper investigates the sales process of treasury stocks, while most previous research studies treasury stock repurchases. The sales of treasury stocks are an important measure to protect management rights only in Korea, as Korea's laws and systems allow treasury stock sales according to the board's resolution and not by the decisions made at the general shareholders' meetings. The board's resolution, which considers the owner-manager's interest on management rights, can cause damages to small shareholders. Considering (i) the economic characteristics of treasury stocks, (ii) other countries' institutions and experiences, (iii) a theoretical assessment of the possibility of small shareholder losses, and (iv) lessons from Korea's actual instances, Korea's present system should be corrected at least in the mid and long term. Even in the short-term, rules pertaining to sales enacted by the board's resolution inducing small shareholder losses should be overhauled. The autonomous discipline by various stakeholders could be an ideal measure by which to monitor ownermanager's decisions. In addition, temporary intervention measures, such as government examinations, could be implemented to protect small shareholders.

Digital Reference Service : Directions for Promotion (디지털참고봉사의 이용 활성화 방안)

  • Chang, Hye-Rhan
    • Journal of Korean Library and Information Science Society
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    • v.35 no.4
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    • pp.215-228
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    • 2004
  • Discussion on the use of the library service should be based on both theoretical research and practical experiences. To increase the usage level of digital reference services in Korea, various aspects of the promotion, including latent user profile, publicity, site accessibility, and evaluation are examined, based on the previous research and overseas successful approaches. Results revealed useful information for planning and implementation.

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The effect of dual information sources perspective in online shopping malls: information satisfaction, trust, and loyalty (온라인 쇼핑몰에서 기업과 고객들의 차별화된 정보만족과 신뢰의 구분이 로열티에 미치는 영향)

  • Lee, Ju-Min
    • The Journal of Information Systems
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    • v.19 no.3
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    • pp.13-34
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    • 2010
  • As consumers participate in sharing their experiences, they become a powerful information source in online shopping malls. Previous studies have investigated information service in the company-created information perspective and trust in the company perspective. This study extends the perspective of company-consumers to consumers-consumer perspective in information satisfaction and trust. Also, this study suggests loyalty as voluntary behaviors and adds helping behavior to the loyalty. Our results show that information satisfactions influence trust in the information sources such as company and consumers. Moreover, trust in company and trust in consumers influence loyalty differently. While trust in company influences recommending stronger than trust in consumers, trust in consumers influence helping and repurchasing stronger than trust in company.

Multiple Case-based Reasoning Systems using Clustering Technique (클러스터링 기법에 의한 다중 사례기반 추론 시스템)

  • 이재식
    • Journal of Intelligence and Information Systems
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    • v.6 no.1
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    • pp.97-112
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    • 2000
  • The basic idea of case-based reasoning is to solve a new problem using the previous problem-solving experiences. In this research we develop a case-based reasoning system for equipment malfunction diagnosis. We first divide the case base into clusters using the case-based clustering technique. Then we develop an appropriate case-based diagnostic system for each cluster. In other words for individual cluster a different case-based diagnostic system which uses different weights for attributes is developed. As a result multiple case-based reasoning system are operating to solve a diagnostic problem. In comparison to the performance of the single case-based reasoning system our system reduces the computation time by 50% and increases the accuracy by 5% point.

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Environment Design for Digitalized Main Control Room in Nuclear Power Plant

  • Cha, Woo Chang
    • Journal of the Korean Society of Systems Engineering
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    • v.7 no.2
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    • pp.1-5
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    • 2011
  • The purpose of the Environment Design (ED) for Main Control Room (MCR) of Nuclear Power Plant (NPP) is to provide and create an optimal working space to be free from physical, physiological and mental stress as well as environmental discomfort, based on the previous environment design experiences and to recommend the best ED including the color, the lighting and the interior design. Environment Design consists of three main areas: Human factor engineering design, Interior design with color design, and Lighting design. These design areas have been interactively cooperated in a way that each design specialist would share the objectives and concepts of the Environment Design for MCR. The specialists for Human Factors Engineering design had a corporative role in such a way to provide the guidelines for MCR design suitability of Interior and Lighting design considering the Human System Interface (HSI) safety concerns. This paper describes fruitful efforts to create the best fit for MCR ED among several design proposals with the design recommendations, impacts, and contributions to NPP environment.