• The Journal of the Korean dental association
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• v.56 no.10
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• pp.572-580
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• 2018

Adequate access cavity is the key to achieving endodontic success. The aims of the access cavity can be considered as follows: 1) Creation of a smooth unimpeded pathway for instruments to canal orifices 2) Removal of the entire roof of the pulp chamber in order to inspect the pulp floor, 3) Preservation of natural tooth substance consistent with the above. Recently, contracted endodontic cavities based on minimally invasive endodontics has introduced. This has the benefit of preserving the pericervical dentin more than traditional access cavity with achieving long-term success. However, some studies reported controversial results regarding root canal detection, instrumentation efficacy (noninstrumented canal area, hard tissue debris accumulation, canal transportation, and centering ratio) as well as fracture resistance. Therefore, further studies are required for accepting contracted access cavity, and modified form of traditional and contracted access cavity could be considered.

• Bulletin of the Korean Chemical Society
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• v.24 no.6
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• pp.695-702
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• 2003

Recent experimental and theoretical advances on the aromatic alcohol-water clusters are reviewed, focusing on the structure of the hydrogen bonding between the alcoholic OH group and the binding water molecules. The interplay of experimental observations and theoretical calculations for the elucidation of the structure is demonstrated for phenol-water, benzyl alcohol-water, substituted phenol-water, naphthol-water and tropolone -water clusters. Discussion is made on assigning the role (either proton-donating or -accepting) of the hydroxyl group by measuring the shifts of infrared frequency of the OH stretching mode in the cluster from that of bare aromatic alcohol for the experimental determination of the cluster structure.

• Journal of Korean Society for Quality Management
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• v.32 no.2
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• pp.1-14
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• 2004

As environmental issues have been become critical concerns of business, many domestic small and medium enterprises(SME's) are rapidly accepting environmental management systems(EMS) that confirm ISO 14001 guidelines. The purpose of this paper is to present the results of an empirical study carried out on a sample of certified SME's with the aim of identifying obstacles encountered in adopting ISO 14001 standards and the impact of environmental systems on corporate performance after implementation of the ISO 14001 registration process. Data from this study show that the vast majority of respondents reported environmental improvements related to the implementation of an ISO 14001 EMS, especially in the area of employees' participation of the environmental management and responsibilities for reducing negative impacts, energy and resource conservation, materials reuse, and raising top management commitment. The greatest obstacles for implementing the ISO 14001 standard are lack of cooperation and a scarcity of resources such as personnel, money, and time. Results of this study serve as a reference point understanding the problems in the implementation of ISO 14001 in other small and medium firms.

• The Journal of Information Systems
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• v.17 no.2
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• pp.73-94
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• 2008

Knowledge is a fundamental assets, therefore, the ability to create, acquire, integrate, and share knowledge has emerged as a fundamental organizational capability(Sambamurthy and Subramani, 2005). This apaper reports the results of an empirical study investigating the factors of acceptance and the moderating role of resistance in Knowledge Management Systems(KMS). The research model is based on the theory of planned behavior(TPB) and technology acceptance model(TAM). It includes the perceived usefulness instead of attitude, subjective norm, perceived behavior control and intention of acceptance of KMS. Also, three external variables namely task-technology fit, organizational support, and perceived rewards are added. In the research model, all hypothrses of the baseline model and the moderating effects of resistance were found to be significant. The authors also of fred several implications based chi the findings.

• Journal of The Korean Digital Architecture Interior Association
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• v.5 no.1
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• pp.24-31
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• 2005

In the study results, Incheon region, a classic house was consistently built in spite of having been the barrier which a foreign dwelling flowed into until 1960's. And met me in our dwelling habit and changed and used a house built by the Japanese. That is, the traditional dwelling format worked with a spindle accepting other dwelling culture and can do it. It was a too social change and was able to confirm the fact that it extended a room as necessary or it improved a classic house and used as West back various way whom it got cold, and exchanged it to a kitchen of a cause and effect life.

• Journal of Families and Better Life
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• v.19 no.4
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• pp.69-83
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• 2001

The purpose of this study was to construct the new premarital relationship enrichment program and to examine the effects of it. Based on the review of the previous research and program, this program was composed. It included the realistic expectations of marriage and sex, understanding of themselves and accepting differences, role expectations and intimacy in the relationship, communication and conflict resolution skills. To perform this program, six sessions of time-limited(100-150 minutes) were carried out. And the subjects were assigned to experimental group(N=4 couples) and control group(N=4 couples). Scales of PREPARE and SEI(Self-Esteem Inventory) were used as the pre-post-follow instruments of this study. Major findings were as follows: 1. Premarital Relationship Enrichment Program had meaningful consequences for the improvement of the participants self-esteem. 2. Premarital Relationship Enrichment Program had meaningful consequences for the improvement of the participants equal role, communication and conflict resolution skills.

• Journal of Engineering Education Research
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• v.15 no.4
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• pp.58-65
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• 2012

The purpose of this study was to analyze the effects of accreditation on curriculum in Korean engineering education. To analyze the curriculum, bulletins of three colleges accredited programs and three colleges non-accredited programs from 2002 to 2010 were compared. The conclusions of this study are as follows. First, the accreditation for engineering education has a considerable influence on curriculum by strengthening the concentration areas, setting general education directions to fit engineering needs, and reinforcing major and MSC(math, science and computer) subjects. Secondly, the accreditation for engineering education causes significant changes in the educational objectives and contents. Lastly, it has an indirect influence on the curricula of non-accredited programs, such as increasing the number of MSC credits and accepting engineering design courses. Thus, the process of curriculum improvement is revealed in more global standardized engineering curricula.

• Journal of the Korean Society of Marine Environment & Safety
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• v.8 no.1
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• pp.109-125
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• 2002

This paper has dealt with the efficiency of maritime safety administrative system in the APEC region. under the hypothesis that officient maritime safety and marine environment. Many factors affect administrative structures, which generate various types of administration. The factors include social, economical and political factors. Further, the addition of historical factors to these factors makes it tougher to draw out an optimal model for maritime safety administration. In this regard, the result of this study will be within the extent of volition capable of accepting it under the existing maritime safety administration system. The result of the study to help APEC member states(economies) to compare their own system with those of other economies and finally to help to improve their maritime safety administrative structure for safer shipping.

• Journal of the Korea Computer Industry Society
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• v.6 no.2
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• pp.305-316
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• 2005

A heterogeneous webserver such as an HTTP server should be able to currently deal with numerous users. To the end, it is inevitable to formally analyze web traffics as well as a webserver itself. In particular, as most systems adopt HTTP 1.1 protocol instead of HTTP 1.0 protocol, it is more difficult to represent the system as a simple analytic mode. In addition, since most of previous models missed the detailed processes of the server, it is unsuitable for the current server based on HTTP 1.1 to tune itself with its own system parameters. On the basis of HTTP 1.1 Protocol supporting persistent connections, we thus present an analytical end-to-end tandem queueing model considering specific hardware configurations inside the webserver, which ultimately covers from accepting the customer requests to completing the services.

• Journal of Korean Institute of Industrial Engineers
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• v.23 no.3
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• pp.451-467
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• 1997

Tabu search (TS) is a useful strategy that has been successfully applied to a number of complex combinatorial optimization problems. By guiding the search using flexible memory processes and accepting disimproved solutions at some iterations, TS helps alleviate the risk of being trapped at a local optimum. In this article, we propose TS-based heuristics for solving a class of clustering problems, and compare the relative performances of the TS-based heuristic and the simulated annealing (SA) algorithm. Computational experiments show that the TS-based heuristic with a long-term memory offers a higher possibility of finding a better solution, while the TS-based heuristic without a long-term memory performs better than the others in terms of the combined measure of solution quality and computing effort required.