• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.10 no.6
• /
• pp.753-762
• /
• 1998

A domestic refrigerator is composed of many components such as a compressor, evaporator, capillary tube, and the cabinet which plays a great role on the cycle performance, even if it is not the basic component part in the cycle. Recently, the restriction policy on the energy-saving and environmentally friendly refrigerator is reinforced in our nation as well as developed countries. Therefore, in this paper, cycle simulations and experiments were carried out ito understand the characteristics of the cycle performance using CFC 12, HFC 134a, and HC 600a and to know how changes in UA(overall heat transfer coefficients$\times$ heat transfer area) of evaporator, the position displacement of compressor, and the rpm of fan in the freezing room which has influence on the cycle performance. The result shows that the quantitative values of simulation and experiment are not coincident, but their trend is similar. When HFC 134a and HC 600a were used without the change of design in refrigerator used CFC 12, the performance of system in HC 600a is 30% lower, and the case of HFC 134a is 10% lower than that of CFC 12 on freezing temperature.

• Journal of the Korea Safety Management & Science
• /
• v.17 no.1
• /
• pp.203-213
• /
• 2015

Recently, online grocery shopping has been increasing with the development of internet, mobile, and IT technology due to the proportion of consumers changes like increasing single households and double-income couples. Therefore, online sales from distributors with offline stores have also increased, and the offline retailers are facing their limits in dealing with store-based online channel they have carried out. Domestic offline retailers benchmarked overseas advanced retailers to solve this problem by reviewing about developing the online-only distribution center. However, much investment is needed in order to operate the distribution center with the new concept from abroad. In this study, we have reviewed the current online grocery market trend and the theory related to developing distribution system of the online mall. For offline retailers, we have reviewed the case which developed the distribution center applied to the nation's first online-only distribution center. The purpose of this study is reducing trial and error for local retailers in developing online-only distribution centers and suggesting ways to improve investment effect.

• Safety and Health at Work
• /
• v.11 no.3
• /
• pp.266-274
• /
• 2020

Background: From only frequency rate of industrial accidents, it is difficult to define the industry composition of accident statistics in a nation. This study aims to propose and develop a new index for measuring the degree of concentration of industrial accidents using the concept of the Herfindahl-Hirschman Index in the case of European countries. Methods: Using the concept of the Herfindahl-Hirschman Index, the concentration index of accidents in the country is developed, and the conditions of European countries are compared using indexes of frequency rate and concentration ratio. Results: The frequency rate and concentration ratio of fatal and nonfatal accidents in European countries are compared. According to the economic condition and geographical position, different patterns of accidents concentration are presented in terms of frequency rate and concentration ratio. Conclusion: We develop the concentration index of industrial and occupational accidents that identifies the industrial ratio of accident occurrence, and the differentiated strategy can be formulated such as approaches to reducing frequency and prioritizing target industries.

• The Journal of Society for e-Business Studies
• /
• v.2 no.1
• /
• pp.1-20
• /
• 1997

This study aims to suggest CALS implementation strategies and policies for information-based management of small and medium companies in Korea. At the turning point from traditional document-based management to recent digital-based one, it is well known that implementation of CALS concept is crucial for advancing business management of small and medium enterprises In order to attack the aim, this paper critically analyzes the empirical difficulties and obstacles of the current information-based management of small and medium companies in Korea. On the basis of the above analysis, this paper suggests the strategic plans and policies of CALS implementation for small and medium enterprises in Korea as follows. First, government should provide the supporting policies and proper system so that the large enterprise can be linked with small and medium companies for sharing necessary information. Second, similar enterprises should be integrated on the basis of information and automation evaluation. Third, implementation strategies and plans should be advanced on the basis of the informationalized phases with respect to the technology level of small and medium enterprises. For more efficient CALS implementation, this paper also proposes the following subsidiary policies. First, it is substantially important to publicize the nation-wide spreading of CALS mind. Second, it is strongly recommended to educate and train CALS specialist on a consistant basis. Third, government should support the enterprises by providing sufficient fund for CALS implementation. Fourth, the ideal CALS implementation models for small and medium enterprises should be developed. Fifth, the consulting and training program for CALS implementation should be established through ECRC (Electronic Commerce Resource Center). My study was based upon the enterprises' responses to the questionaires I made

• The Journal of Korean Academic Society of Nursing Education
• /
• v.15 no.1
• /
• pp.44-52
• /
• 2009

Purpose: This study was done to investigate emergency nurses' perceived competency and frequency of 17 educational interventions. Methods: A mail survey was administered to a convenience sample of 744 nurses in 143 emergency departments across the nation. Results: The mean score for overall competency was 2.90 out of 4. The competency score for staff education (2.40 out of 4) was lower than that of patient/family education (3.40 out of 4). The mean score for overall frequency was 3.34 out of 5. The frequency score for staff education (2.27 out of 5) was lower than that of patient/family education (4.39 out of 5). Emergency nurses' perceived competency was significantly correlated with frequency of educational interventions. Overall competency score was different according to the nurses' age, education, position, hospital experience, emergency experience and the type of emergency department. Conclusions: Although the overall competency is high, the competency on some areas of educational intervention remains insufficient. Educational programs to reinforce emergency nurses' educational competency and evidenced based protocols on education should be developed.

• Korean Journal of Health Education and Promotion
• /
• v.28 no.1
• /
• pp.69-80
• /
• 2011

Objectives: This study aims to identify the factors associated with colorectal cancer screening behaviors. Methods: The nation-wide representative samples of 2,928 adults aged ${\geq}50$ years for colorectal cancer screening were derived from the fourth Korea National Health and Nutrition Examination Survey (KNHANES IV). This study investigated socio-demographic, health behavioral and contextual factors associated with colorectal cancer screening using descriptive statistics and multivariate logistic regression analysis. Results: In terms of socio-demographic factors, gender, age, marital status, occupation, monthly income, and resident region were significantly different between screening group and non-screening group. Among health behavioral and contextual factors, regular physical checkup, weight control, physical activity, smoking, drinking and having other cancers were significantly different. From the multivariate logistic regression analysis, marital status, education level, regular physical checkup and weight control were associated with colorectal cancer screening behavior. Conclusions: It is necessary to understand the importance of early detection and cancer screening. Appropriate health education and active promotion about the cancer screening should be developed based on the study findings in order to motivate people to have cancer screening. Also, these findings should be reflected in the health policy.

• Spatial Information Research
• /
• v.13 no.4 s.35
• /
• pp.381-391
• /
• 2005

The NSDI concept has changed with the development of the NSDI. While the NSDI was initially established as a separate entity, recently more attention has been given to the SDI hierarchy, from a local level to a global level. As an advanced NSDI, the USA, the UK and Canada emphasize more on better citizen services through an e-Government GIS portal such as the USA's Geospatial One-Stop. This study hypothesizes that the characteristics of NSDIs can be different from each nation in terms of vision, structure, evolution stages and a degree of integration with the e-Government. Rather than to describe differences just fur comparison, more characteristics of NSDIs are identified and the comparisons are developed as recommendations for the future NGIS(National Geographic Information System) in Korea.

• The Korean Society of Law and Medicine
• /
• v.13 no.2
• /
• pp.263-284
• /
• 2012

Medical Act. article 2 (3) stipulates that "a korean medicine doctor is in charge of providing korean medical practices and korean medical health guidance". But, without a definition article about korean medical practice, the legal concept of it is defined by supreme court cases according to specific legal trials. To establish the concept of korean medical practice, it must be included that the common parts of practice of medicine involving "the purpose of practice", "the subject of practice", "the object of practice" and "other dangers", as well as the special parts of conceptual elements of korean medical practice involving "korean medicine principle" and "differentiation" and also "manufacturing of korean medicine". Accordingly, the definition of korean medical practice is defined as examining, diagnosing, differentiating, prescribing, manufacturing of korean medicine, treating, korean medical care guiding so as to treat diseases and to promote and to maintain health, based on korean medicine as traditionally handed down from the nation's ancestors and korean medicine principle which is scientifically developed and applied and also includes a practice that will cause physiological danger to human body and/or bring harm to public health and sanitation if it is not perfomed by korean medicine doctor.

• Journal of the Korea Safety Management & Science
• /
• v.11 no.2
• /
• pp.33-40
• /
• 2009

The Railroad Safety Act was implemented in 2005 due to the increased concerns regarding railroad safety since the Daegu subway fire in 2003. In line with this, the Act became a standard to build the total railroad safety systems which has been overlooked compared to the quantitative growth of the railroad business. The minister of the ministry of Land, Transportation and Maritime Affairs lays down the Act for railroad Companies to conduct emergency programs in response to the emergency occurring on the railroad such as fire, explosion, derailment, etc. By enacting the Safety Act, the nation's construction of the contingency management system for railroad emergency increased", and it made the railroad company prepare the Emergency SOP by establishing 'The guideline on the Establishment of the railroad Emergency Plan' in order to support the efficiency of the Act. In line with this, I would like to analyze a matter of system development and the main function of the "railroad Emergency Training Program" for activation improvement of standardized operation procedure developed through the 'Total capitalize Safety Technology development'.

• Proceedings of the KSR Conference
• /
• 2007.05a
• /
• pp.1244-1249
• /
• 2007

Pursuing sustainable development throughout society and industry and the field of environmental policy, each international organization or nation has performed international standardization projects on environmental management activities for their system as well as environmental assessment for a product such as life cycle assessment (LCA) and life cycle inventory database (LCI DB), and the environmental aspects have been increasingly demanded as crucial evaluation specifications. Moreover, the conventional environmental policy, which represents the direct-control, has been more dependent on the market forces and product itself after the Climate Change Convention., and the Integrated Product Policy (IPP, EU) is applied vigorously to strengthen global competitiveness of a product and to achieve the effect of environmental improvement for it. According to change of the international railway market, the value of Eco-Design has been increasingly important in developed countries including EU. Thus, each country is establishing its own guidelines, software and database for each product, and developing new policies through Eco-Design with practical results in marketing. To react this and develop Korean railway as an environment-friendly industry with priority to other transportation system as well as maintain high place in technology, the direction of RACE software development of main function is introduced, which is exclusively used for EMU to assess both environmental and economic aspects with LCA and eco-efficiency (EE).