• Journal of environmental and Sanitary engineering
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• v.7 no.1
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• pp.95-102
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• 1992

This study was carried out to investigate the domestic solid wastes which produce through the daily life. As the valuable resources, the wrapping materials were focused for the main subject together with the kitchen garbage which is concerned with actual situation. The solid wastes must be recovered and reused effectively under the proper management as the resources, while, the kitchen garbage have to consider with viewpoint of the diminution for the treatment cost and the national economy. Nowadays, the wrapping wastes occupied more than sixty percent of the total domestic wastes in Korea. On the other hand, wrapping paper occupied over fifty percent of the total goods package in the supermarket, therefore, every citizen should aware of the problem and participate the action plan to minimize the daily life wastes.

• Journal of Environmental Science International
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• v.12 no.2
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• pp.145-149
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• 2003

This study was carried out to present rural functional resources through classification and preparation of checklist for ecological and cultural resources which considered various aspect of agriculture and rural area. In this study the function of ecological and cultural resources classified 6 functions such as natural environment, free environmentally agricultural products, experience of agricultural products, recreational places, rural life experience, and Interchanges of human resources. Prepared evaluation list through this study can explain a local characteristics based on 6 functions of agricultural and mountain village. This evaluation list was focused on the magnitude of the resources which motivate the visiting of city-dweller as a consumer, for an actual regional plan, investigation of the inhabitant consciousness survey should be needed, simultaneously.

• Journal of the Korean Institute of Rural Architecture
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• v.9 no.3
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• pp.63-72
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• 2007

Recently, with the policy balance development in the country, Ministries of the government as managers related each of regional projects have prepared pan-governmental support system to achieve Making Livable Area Policy. This study is analysis result of investigation in 2007 authorized cases of MLCP(Making Livable City Project) which Ministry of Construction & Transportation have propelling from city and rural-urban area of town, myeon and dong, to rural area of small village size. Areas chosen for MLCP have the active participation of inhabitants, and to promote successfully project, need to support system and originality for area. Such projects will finally increase the life quality, and make life-spaces wanting to live in the area.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.21 no.6
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• pp.860-864
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• 2012

The contact tip is higher the wear of resistance and the longer life are demanded to GMA welding process. In this study, four different contact tips with three different compositions by two wires were evaluated their wear resistance by measuring in every one hour the area of enlarged hole at the exit side during actual wleding. Experimental results clearly showed that the Cr-containing tips strengthened by precipitation hardening have much better resistance to wear than those made by work hardening. In addition, flux cored wire is excellent abrasion resistance test results showed. Based on these results, the domestic industry, the life of the contact tip to know will be used as basic data.

• Journal of Fashion Business
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• v.14 no.4
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• pp.132-145
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• 2010

These days, the aging population is becoming a critical social issue; the activation of the silver industry for the Y-O generation, meaning the young-old group of aged 55-64, is accelerating now. Pants are very important item to this generation, since they pursue active life with an exercise and leisure activities. Therefore, the physical, psychological, and social characters as well as the changed life style of women in the Y-O generation were reviewed, based on former studies and books. The consumer's patterns and actual wearing conditions about slacks were researched and analyzed through the survey toward 300 women aged 55-65 living in Seoul. Based on this research, information was provided for the development of slacks pattern which is suitable to the deformed body and aesthetic consciousness of the Y-O generation.

• Journal of Life Science
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• v.11 no.1
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• pp.65-67
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• 2001

In order to develop a rapid and simple method for testing the purity of radish hybrid seeds using a procedure based on the PCR(Polymerase chain reaction), eighty random primers were screened with the genomic DNA extracted from five day old seedlings of inbred parent lines and their F1 hybrids. Two primers, HRM-02 (5'-GAGACCAGAC-3') and HRM-19(5'-TGAGGCGTGT-3'), generate reproducible unique PCR patterns which can identify each parent lines as well as their hybrids. In actual test of randomly selected hybrid seeds using the two marker primers, the purity tested by one primer was exactly same as that of other primer. It suggests that one marker primer selected in this experiment is enough for the purity test of radish hybrid seeds. We demonstrates the use of RAPD(randomly amplified polymorphic DNAs) markers to identify each of inbred parent lines and hybrids by rapid and simple method.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.14 no.10
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• pp.854-862
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• 2002

In the previous research, a simplified correlation method was developed as an easy prediction tool for comparing energy use of cooling plants. The purpose of this paper is to test the applicability of this method for economic evaluation with two zones of a 20-story commercial building in Seoul. The results of this method were compared with the DOE-2 simulation and actual measured data. Then, Comparisons of life cycle cost were carried out for three types of cooling plants. Testing of one zone showed good agreement of within 10% error in cooling energy use and within 2% error in LCC. But testing of the other zone indicated that the use of this method were invalid when input variables were used beyond its valid range.

• Transactions of Materials Processing
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• v.9 no.1
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• pp.43-51
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• 2000

The die wear is one of the main factors affecting product accuracy and die life in hot forging process. It is desired to analyze die wear by developing wear prediction method combined with FE-simulatin and experiment. Lots of researches have been done into the wear analysis of cold forging die, and the results of those researches were successful, but there have been little applications to hot forging die giving successful results. That is because hot forging process has many factors influencing die wear, and there was not accurate in-process data. In this research, change of die surface hardness by thermal softening during the lifetime was obtained by experiment, and hardness distribution of cross section was measured. This wear analysis was applied to hot forging die, and gave comparatively good results compared with actual wear profile.

• Korean Journal of Human Ecology
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• v.1 no.1
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• pp.1-25
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• 1992

The purpose of this study is to find out the traditional customs of family occasions-New Year Day, Full Moon Day, a marriage ceremony, funeral, first-year birthday, 60th birthday, other birthday, and moving a residence through a literature review. The content of each occasion consists of meaning, process of activities, costume, foods, plays, gifts, etc. The following research is suggested to survey on actual family life and to develop and provide ideal program of the family occasions through formal and informal education.

• The Korean Journal of Financial Management
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• v.25 no.4
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• pp.145-182
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• 2008

As the life expectancy increases resulting in the aged society, the post-retirement life became one of the most important concerns of people. The long-term investment vehicles such as retirement savings and pension plans have been introduced to meet such demand of society. This paper examines the impact of asset allocation strategies on the long-term investment performance. Because of the unusually long investment horizon and the compounding effect, a suboptimal asset mix in a retirement plan can be a very costly and irreversible mistake. Instead of relying on anecdotal evidence to evaluate the merits of different allocation strategies, this paper performs various tests including stochastic dominance tests using both actual data and Monte Carlo simulated data that best fit the historical experience. The results indicate 1) the long-term investments perform better than the short-term investments, 2) the optimal asset allocation strategy for the long-term investments should be highly equity dominated.