• 제목/요약/키워드: Degree day

검색결과 1,252건 처리시간 0.031초

서울 및 부산지역의 가변 평형점온도에 따른 냉난방도일 산정법에 관한 연구 (Estimating Cooling and Heating Degree Days for Variable Base Temperature)

  • 임병찬;정순성;서동현
    • 설비공학논문집
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    • 제26권2호
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    • pp.79-85
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    • 2014
  • In general, building energy performance is evaluated with a detailed transient building energy simulation program. However, energy evaluation tools with the bin method are still used, because of their simple and easy way to calculate building energy performance, without reducing their precision. In this research, several heating and cooling degree day methods are compared, and evaluated with their performance for variable base temperature. This analysis considered about ten years of the continuous outdoor temperature, in the Seoul and Busan areas. It is concluded that the simplified bin method is more or less acceptable for Seoul and Busan, compared with the detailed hourly bin method.

물리치료사의 업무관련성 스트레스 (Work-Related Stress among Physical Therapists)

  • 이충휘
    • The Journal of Korean Physical Therapy
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    • 제2권1호
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    • pp.65-74
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    • 1990
  • This study was carried out to measure the degree of work-related stress and to identify factors influencing the excessive stress among clinical physical therapists. One thousand and five physical therapists surveyed nationwide met the established criteria for inclusion in the study. The respondents were an average age of 27.1 years, $34.5\%$ were married, and $61.2\%$ were female. Most of the respondent $(48.1\%)$ worked in local clinics. The average stress score was 50.9. Analysis-of-variance test demonstrated significant difference in the degree of stress among treatment facilities. There was a significant relationship between treatment facilities (general hospital, local hospital, clinic), number of patients treated per day, job satisfaction, low back pain and work-related stress, respectively. Work-related stress was unrelated to matters of sex, marital status, education. Hospital administrators, physical therapydirectors, directors, and individual therapists should work within their organizations to reduce work stress and its detrimental effects. Further research is necessary to investigate preventive measures to decrease the work-related stress.

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지역사회 여가시설 개발을 위한 주 5일 근무자들의 여가행태 분석 연구 (A Study on the Characteristics of Leisure Behavior of the Five-Day Workweek Company Employees for Developing Leisure Facilities in Residential Environment)

  • 신화경
    • 가정과삶의질연구
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    • 제23권5호
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    • pp.181-190
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    • 2005
  • The purpose of this study was to investigate the characteristics of leisure behavior of the five-day workweek company employees for developing leisure facilities in residential environment. The questionnaire survey was used. The subjects of questionnaire survey were 247 staffs of 4 banks. The questionnaire consisted of leisure time, the cost of leisure, consciousness of leisure, actual condition and need of leisure activities and spaces, leisure satisfaction and limitation on leisure. Frequency, percentage, and mean, correlation, $x^2-test$, and factor analysis were used for data analysis. The major results were as follows. 1) Leisure is necessary to strengthen the unity of family and cultivate the sentiment. 2) The degree of satisfaction of leisure facilities was lower than neutral. The satisfaction of leisure facilities related with cost, time of leisure, information of leisure facilities and program, and leisure environment. 3) Present leisure behavioral characteristics were restrictive and passive. However, the subjects showed hopes to increase their leisure activities and to engage in diverse forms of leisure in the future. Also, they showed an increased desired ratios in participating in each leisure activities. 4) In terms of location, they needed leisure facilities which was closer to their house.

Alternative Energy - Environment Safety

  • Kurnaz, Sefer;Rustamov, Rustam B.;Zeynalov, Ismayil
    • International Journal of Aeronautical and Space Sciences
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    • 제10권1호
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    • pp.91-97
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    • 2009
  • It is undertaken systematization of results of satellite and ground observation parameters characterizing a current condition and climatic variability of two selected geographical areas. One of them covers territory of Azerbaijan and another covers a wide area of Caspian See region. Average values and mean square deviations of following values are investigated: outgoing long wave radiation during a day and night (in nebulosity and cloudless). absorbed within a day of the stream of a sunlight of the system in "a terrestrial surface-atmosphere". degree of a covering by clouds of the selected areas during a day and at night, ground temperature values of air. pressure and speed of a wind. Monthly average values of corresponding parameters create a basis of suggested investigations. It has been presented features of a time course of investigated parameters for each month and year in the whole due to the continuously observations since 1982-2000. The scientific problem consists that there are no existed models which authentically would be cover the main aspects of a realities specified changes: they are identified by economic activities. growth of the population and other features of development of a human society or internal fluctuations of biogeophysical/climatic system. Possibilities of predictability of biosphere and climate changes depend on available timely supervision. adequacy of construction of appropriate models. understanding of mechanisms of direct and feedback influences in such complicated systems.

식이요법에 의한 위궤양의 치료 연구 (A Study on Dietary Therapy for Patient with Peptic Ulcer)

  • 임원명
    • Journal of Nutrition and Health
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    • 제2권2호
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    • pp.79-85
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    • 1969
  • A serious case of the stomach ulcer was cured completely through a dietery treatment. The patient was listed as one of worse cases by the doctors. The patient refused to accept doctors' advises to have al surgical operation and sticked to his idea of dietetics. The doctors openly expressed their scepticism to a successful out come of a dietery treatment. However, it has been a success. A special ulcer diet menu prepared for the patient was based on those principles as follow: 1. Ulcer diet contained high protein (70g/day) and high energy (2,000cal/day). 2. To maintain a minimum degree of pressure on digestive process of the stomach, several small meals more than three times a day were served. Fat was avoided except that contained in milk and small amount of butter on toast. 3. To help to neutralize acid of the stomach, ample amount of milk was served. 4. Irritating food and beverage were prohibited. It was concluded that milk was one of the best diet for a peptic ulcer patient, for it could neutralize acid of the stomach as well as could provide ample amount of high protein which expedite healing craters formed by the stomach or duodenal ulcer. It was reported that most of unsucessful peptic ulcer cases of the local patients could be attributed to their failure in observance of an ulcer diet during their dietery treatment period, particularly their unfriendly attitude toward a milk diet.

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웃음요법이 유방절제술 후 환자의 통증과 상태불안에 미치는 영향 (The Effects of Laughter Therapy on Pain and Anxiety among Patients with Postmastectomy)

  • 유은숙;최연희
    • 동서간호학연구지
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    • 제18권1호
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    • pp.47-52
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    • 2012
  • Purpose: The design of this study is a nonequivalent control group, non-synchronized quasi-experimental study. The purpose of this study is to examine the effects of laughter therapy on pain and anxiety of patients with postmastectomy. Methods: The participants were 33 patients admitted for mastectomy in a college affiliated hospital (17 patients in experimental group and 16 patients in control group from November, 2008 to March, 2009). The registered nurse who were certified as the 1st degree laughter specialist implemented the intervention once a day for 30 minutes from the 2nd day to the 6th day after surgery when visited them. Date were analyzed using t, Mann-Whitney U test, repeated measures of ANOVA, paired t-test, or ANCOVA. Results: The level of pain was significantly lower in the experimental group than in the control group. Since the level of pain in all participants was reduced as time passed, the interaction effect between time and group existed. The level of anxiety was significantly lower in the experimental group than in the control group. Conclusion: Based on the results, the laughter therapy may be recommended as an useful intervention to effectively reduce the levels of pain and anxiety among patients with postmastectomy.

Effects of Propolis on 808 nm Laser Induced Wounds

  • ;;;안진철
    • 대한의생명과학회지
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    • 제15권3호
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    • pp.241-247
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    • 2009
  • Wound healing is a complex and highly organized biological response to injury that results in the loss of tissue integrity. Our particular interest was propolis, traditional used as an antimicrobial and an anti-inflammatory agent. The purpose of this study was to see the effects of propolis on healing of the laser induced wounds and the level of collagen formation. 808 nm laser (20 J) was irradiated on the back of rats. Irradiated wounds were divided into gel control and 6 experimental groups (3 and 5% of different three kinds of propolis). Gel type of propolis (supplied by Seoul Propolis Co., Daejeon, Korea) in water based were applied on the laser wound once daily for 14 days. One fourth of rats were sacrificed on $3^{rd}$, $7^{th}$, $10^{th}$, and $14^{th}$ day and each wound was evaluated for degree of wound healing and the level of collagen formation. Healing of wound was evaluated by measuring and comparing the width and depth of the wounds. The levels of collagen were increased in 3 and 5% gel groups comparing to control on $3^{rd}$ day and the collagen level were increased more on $7^{th}$ day. Wounds of the experimental groups showed better healing in width comparing to the healing of the control. The results of this study demonstrated that propolis accelerated healing of wounds induced by laser irradiation and good collagen formation.

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The Effects of Task Types on English Writing Performance in SNS-based Learning Environments

  • Jang, Eunjee;Kim, Jieyoung
    • 영어어문교육
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    • 제18권2호
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    • pp.45-66
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    • 2012
  • The purpose of this study was to investigate the impact of two different SNS-based tasks on university students' English writing performance. To address our primary research question, Me2day, microblogging and Social Networking Service, was employed. 43 university students were divided into two experimental groups depending on the task types: a comparison task group and a sharing personal experiences task group. The main findings of the study were as follows: first, two different types of SNS-based tasks, 'spot the differences' and 'writing diaries', had a positive effect on learners' writing performance. The reason for this was that the succinct messages limited to 150 characters made it easier for the students to try writing in English without burden; and they may benefit from their peers by seeing their posts and interacting with each other. Yet there were no significant differences between the two groups when it came to the degree of improvement. Second, two different types of SNS-based tasks differently fostered certain aspects of the writing performance; 'contents knowledge' was supported by the 'writing diaries' task and range was supported by the 'spot the differences' task. Third, learners in the two experimental groups mostly had positive impressions regarding usage of Me2day as a new learning tool.

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Floral Visitors and Nectar Secretion of the Japanese Camellia, Camellia Japonica L.

  • Rho, Jeong-Rae;Choe, Chun-Choe
    • Animal cells and systems
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    • 제7권2호
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    • pp.123-125
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    • 2003
  • We studied the nectar secretion of the Japanese Camellia (Camellia japonica L.), an evergreen tree and observed its floral visitors during the day. The mean volume of nectar secreted, during daylight (08:31 to 16:30 h) was 30.26$\pm8,29ml$ (SD) (n = 27). During the late afternoon and overnight (16:31 to 08:30 following day), 100.54$\pm54.85$(n = 27) of nectar was secreted. Total volume measured when flowers were sampled once every two hours for an eight-hour period was approximately one-half the volume which was measured when the flowers were sampled only once after eight hours. The mean nectar volume secreted was 8.55$\pm8.3ml$(n = 30) between 08:31 to 10:30, 4.38$\pm$6.1 ml (n = 30) between 10:31 to 12:30, 4.6$\pm5.4ml$(n = 30) between 12;31 to 14:30, and 4.02$\pm3.5ml$(n = 30) between 14:31 to 16:30 hours. During the day, Japanese Camellia flowers were principally visited by the Japanese white-eye (Zosterops erythropleura erythropleura 5.), a native bird, although insects and squirrels also visited to a lesser degree.

Chitin과 Cellulose 복합체로부터 새로운 생분해성 CHITULOSE film의 개발 (Development of New Biodegradable CHITULOSE film from Composite of Chitin and Cellulose)

  • 류영석;이충우홍범식윤정원
    • KSBB Journal
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    • 제8권3호
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    • pp.230-236
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    • 1993
  • Chitin과 cellulose를 dimethylacetamide/LiCl 용매에 용해시켜 유리판 위에서 Chitulose film을 제조 하였다. 이 film은 토양속에서 20일 후에 거의 분해 되었고, 토양 미생물을 16-26hr 후에 투과시켰다. 한편, 필름의 투과도를 검토해 본 결과 물의 투과도는 Chitulose film에서 chitin, cellulose의 혼합 비율에 따라 0~187,500ml/$m^2$/day로 cellulose 함량이 높을 수록 투과도가 낮게 나타났으며, 풍건보다는 중탕에 의한 필름건조방법으로 제조된 것이 우수하였다. 각종 유기물의 최대, 최소투과도는 Chitulose film 의 종류에 따라 달리 나타나 chitin과 cellulose의 조성에 따라 선택적 투과성을 나타내였다. $Na^+$ 이온에 대한 투과도도 달리 나타나 보였고, 산소 투과도도 역시 Chitulose film의 조성에 따라 14-17,850 c $cm^3/m_2$/day로 큰 차이를 보였다. 2~3도 화상을 입힌 쥐에다 Chitulose film을 인조피부로 사용한 결과 염증없이 14일 후에 딱지가 떨어졌고, 31일 후에 완치되는 것이 관찰되었다.

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