• Korean Journal of Agricultural Science
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• v.50 no.3
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• pp.395-406
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• 2023

The large amount of energy required for successful crop production is the main challenge in greenhouse cropping systems. As a response to this challenge a comprehensive evaluation of greenhouse energy consumption was carried out in two structurally similar single-span greenhouses with different thermal curtain positions, with particular attention to energy productivity, specific energy, net energy, and energy ratio. The greenhouses are used for strawberry production. In the R-greenhouse (RGH), the thermal curtain hanged directly at the roof ridge, whereas in the Q-greenhouse (QGH), the thermal curtain was placed 5° from an imaginary vertical axis, from the middle of the roof ridge downwards to the north side of the greenhouse roof. The relevant data were recorded using standard methods. The results indicated that the energy expended in the RGH and QGH systems was 2,186.48 and 2,189.26 MJ/m², respectively. Electricity and nitrogen fertilizer contributed the highest energy input in both greenhouses and in all seasons. The output energy was 3.12 and 3.82 MJ/m², respectively, in RGH and QGH in season I and 4.40 and 4.87 MJ/m² in season II. In terms of energy expended, there was no significant difference between the two greenhouses, nor between the two seasons. These results indicate that greenhouses of the size used in this investigation are not viable in terms of energy productivity, energy-use efficiency, and subsequent economic performance. However, further studies should be conducted to scale-up the information obtained from this investigation.

• International Journal of Railway
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• v.5 no.1
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• pp.1-9
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• 2012

Reliability means that a product maintains its initial quality and performance at a certain period of time (time, distance, cycle etc) under given condition without failure. The given conditions include both environmental condition and operating condition. Environmental condition means a common natural environment such as temperature, humidity, vibration, and working condition means an artificial environment such as voltage, current load, place for installment, and hours of use, which occurs during the life of the product. In the field of railway vehicles, it is mandatory to use a part with the proved reliability as the extension of the life of vehicle become highly necessary. But the reliable assessment method for the reliability of the part is insufficient. If the reliability of the railway vehicle parts could be assessed by using the field data, the reliability of the entire system could also be evaluated reliably. In this study, life span of micro-switch for master controller is analyzed and prediction is performed based on its field data given by an operator considering the special circumstances of railway vehicles such as the operation of a large number of trains on the same line.

• Herbal Formula Science
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• v.16 no.1
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• pp.55-64
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• 2008

The span of life of human beings has lengthened because of medical progress and so on. Consequently, the old have begun to remark that quality of life (QOL) is as important as extension of the life expectancy. However, some diseases such as stroke, cancer induce decrease of QOL. In case of the stroke, it is followed by chronic headache and dementia as an aftereffect, causing serious decrease of QOL. Jodeungsan, traditional medicine, have been prescribed for headache and hypertension. Many clinical trials and laboratory experiments about pharmacological effects of Jodeungsan have been reported. Jodeungsan ameliorated chronic headache and improved recognitive deficit. Moreover, Jodeungsan lowered blood pressure in hypertensive condition which is one of a major cause of stroke. These effects of Jodeungsan on several diseases are partly attributed to antioxidant effect. This report reviews the pharmacological effect of Jodeungsan in the view of stroke-related diseases.

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.123-125
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• 2003

We provide a molecular study intending to derive an estimate of the relationships within the genus Bombus, 10 species which span 6 subgenera common collected from several regions of Korea and B. terrestris imported from several foreign countries for pollination using a portion of mitochondrial 16S ribosomal RNA. (omitted)

• Journal of The Korea Institute of Healthcare Architecture
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• v.8 no.1
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• pp.45-52
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• 2002

Recently cancer, AIDS, chronic sickness have increased according to the elevation of socioeconomic level and fast change of lifestyle. The number of patients receiving terminal care increased fairly because the span of life is extended by development of medicinal technology. Also necessity of hospice and palliative care was risen according to the request of terminal patients that remove pain and keep calm life by interest about quality of life. However architectural plan and type specialization of facility which can correspond team's composition and supplied nursing program are not consisting. This study researches about care environment of hospice facility plan through investigation into terminal patient's special quality. The purpose of this study is to propose fundamental datas of hospice facility for architectural plan through comparative analysis of cases of domestic and outside facilities.

• Journal of mucopolysaccharidosis and rare diseases
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• v.1 no.2
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• pp.40-43
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• 2015

Prader-Willi syndrome (PWS), a complex genetic disorder, arises from suppressed expression of paternally inherited imprinted genes on chromosome 15q11-q13. Characteristics include short stature, intellectual disability, behavioral problems, hypogonadism, obesity, and reduced bone and muscle. The life expectancy of persons with PWS has increased in recent years. Cardiovascular diseases, diabetes, dermatological, and orthopedic problems are common physical complaints in older people with PWS. Behavioral problems are major concerns in adults with PWS into old age. And aging is also associated with significant social and economic changes. Age-related physical morbidity, physical appearance, behavioral and psychiatric problems, functional decline and economic problems can be combined in older PWS. The care for older people with PWS requires a life span approach that recognizes the presence, progression, and consequences of specific morbidity.

• Korean Journal of Health Education and Promotion
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• v.16 no.2
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• pp.173-186
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• 1999

For happy life, it is first of all essential to live healthily although wealth is important too. Korean government has enforced National Health Insurance Program and has improved it every year. However, health security still leaves something to be desired in Korea. Although Korean government also enacted National Health Promotion Law in 1995, the national health promotion policy has not been effectively carried out because of the problems of institution related to policy implementation and expenses of organizations. Also, community health services have failed to realize the anticipated results. Especially, health education services which are deeply related to national health consciousness are not well accomplished. Therefore, the average life span of Korean people is 73.5 years which display the level of the developing countries, while it is 74.7 years in the developed countries. Various health education services which Korean government and private organizations are carrying out are not activated. At this time, national health behavior and Quality of life will be greatly enhanced if "Mobile Health Education Teams" play active roles with new image, visiting vulnerable areas to health problems all over the country.e country.

• Korean Institute of Interior Design Journal
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• no.41
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• pp.129-136
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• 2003

The purpose of this study is to analyze consumer's lifestyle, needs and preferences and design trends for planning of the future apartment interior design. Recently, social change such as computerization, industrialization, pluralism and globalization has been braught lots of changes to modern housing spaces. The meaning of ‘Family’ and ‘Residence’ has been diversified by various life-style of modern family. Therefore, the new concept of residence is needed to change for the future housing plans and satisfy their sophisticated needs and preferences considering modern family's lifestyle and life-span. This research was conducted through the questionaire-survey, taste style survey by show card, and focus group interview(F.G.I) for investigating consumer's life style and tastes. Through this research, four-types of consumer's lifestyle were classified by analyzing data and special spaces such as family-room, media room, interior planted-space, and men's room were needed to consider interior space planning. This study shows that the planning of storage space, flexible space, livingroom and multi-used space will be more important in apartment interior space.

• Journal of Mechanical Science and Technology
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• v.18 no.5
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• pp.798-807
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• 2004

A testing system was developed to improve the reliability of printhead and several printheads were tested. We developed a thermally driven monolithic inkjet printhead comprising dome-shaped ink chambers, thin film nozzle guides, and omega-shaped heaters integrated on the top surface of each chamber. To perform a fatigue test of an inkjet printhead, the testing system automatically detects a heating failure using a Wheatstone bridge circuit. Various models were designed and tested to develop a more reliable printhead. Two design parameters of the width of reinforcing layer and heater were investigated in the test. Specially., the reinforcing layer was introduced to improve the fatigue life of printhead. The life-span of heater with a reinforcing layer was longer than that without a reinforcing layer. The wider the heater was, the longer the life of printhead was.

• Journal of Families and Better Life
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• v.1 no.2
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• pp.1-20
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• 1983

The purpose of this study is to analyze the planning dimensions according to homemaker's age and education. In this study the dimensions of planning are participation, time span , significance, specifity and flexibly. The subject areas of planning are family economy, household activities, child rearing and purchasing. Questionnaires were given to the selected 181 homemakers living in Seoul and Incheon. Data were analyzed by frequency, percent, x2 -test, F-test. The result are as follows: 1) There are significant differences in planning dimensions according to homemaker's age and education in some subject areas. 2)The younger the homemaker is and the higher her educational level is, the more cooperatively the couple plan in family life. 3)The family of which homemaker is younger and more educational tends to plan significantly, specifically and flexibly in family life.