CFD를 이용한 박스형 건물의 풍압분포 분석에 관한 연구 신동신(Dongshin Shin); 박재현(Jaehyun Park); 강보미(Bomi Kang) ...
설비공학 논문집, 28(1),
2016, 2016-01, Volume:
28, Issue:
1
Journal Article
Peer reviewed
Open access
This paper studies the wind pressure distribution over the Commonwealth Advisory Aeronautical Council building model (CAARC model) using CFD. We also considered the interaction between the CAARC ...model and other buildings. The Reynolds number based on the building height was 380,000. The number of sells for the simulation was about 500,000. The wind pressure was lowest when the wind direction was blowing at an angle 45 degrees of the CAARC model. When the gap between the two buildings in front of the CAARC was over 1/2 the horizontal length of the CAARC model, the wind pressure was higher than the pressure without the two buildings. When the distance between the two front buildings and the CAARC was less than 1.5 times the vertical length of the CAARC model, the wind pressure increased. Accordingly, the relative distance between two buildings or the distance from the CAARC model should be considered when extra wind exists due to other buildings.
This study provides basic data for nursing intervention to increase self management of hemodialysis patients by identifying the relation among their illness perception, physiological indicators, and ...self management. The participants were 134 patients receiving hemodialysis at a general hospital in Seoul. Data were collected by using a structured questionnaire and medical records. The collected data were analyzed by using descriptive statistics, independent t-test, one-way ANOVA, Pearson correlation coefficient and multiple regression analysis with the SPSS/WIN 23.0 program. The significant factors influencing self-management of hemodialysis patients have been identified with 8 variables. The first one is registration for kidney transplantation (β=-.20, p=.034). Among sub items of illness perception are consequence (β=-.20, p=.031), treatment control (β=.19, p=.040), and illness coherence (β=-.18, p=.049). In addition, among physiological indicators are hematocrit (β=.38, p<.001), hemoglobin (β=.29, p=.005), BUN (β=-.25, p=.010), and phosphorous (β=.22, p=.033). These variables explained 26.3% for self-management of hemodialysis patients. In order for hemodialysis patients to improve their self-management, a concrete nursing intervention improving the treatment control among illness perception as well as improving the understanding of physical indicators needs to be provided. 본 연구는 혈액투석환자의 질병지각, 생리적지표, 자기관리의 관계를 확인함으로서 혈액투석환자의 자기관리를 증진시키기 위한 간호중재를 위한 기초자료를 제공하기 위함이다. 연구의 대상자는 서울소재 대학병원의 혈액투석환자 134명이다. 자료수집은 자가보고실설문지와 의무기록조회를 통해 수집되었다. 수집된 자료는 SPSS/WIN 23.0 통계프로그램을 통해 백분율, 평균 및 표준편차, independent t-test, ANOVA, Pearson correlation coefficient와 multiple regression으로 분석하였다. 분석결과 헐액투석환자의 자기관리에 유의한 차이가 있는 8개 변수가 확인되었다. 신장이식 대기등록 여부(β=-.20, p<.05)와 질병지각의 하위항목 중 결과(β=-.20, p=.031), 치료통제감(β=.19, p=.040), 이해도(β=-.18, p=.049), 생리적 지표 중 헤마토크릿(β=.38, p<.001), 헤모글로빈(β=.29, p=.005), 혈중요소질소(β=-.25, p=.010), 혈중 인(β=.22, p=.033)의 8가지 변수로 확인되었다. 이 요인들의 혈액투석환자의 자기관리에 대한 설명력은 26.3%였다. 이에 혈액투석환자의 자기관리를 증진시키기 위해서는 생리적지표에 대한 이해를 높이고 치료통제감을 높이는 질병지각중재프로그램의 개발이 마련되어야 할 것이다.
Distribution characteristics and altitudinal gradient of four species (E. strigata, E. separigata, E. orientalis-sachalinensis group) of the mayfly genus Ephemera (Order Ephemeroptera) were analyzed ...with probability distribution models (exponential, normal, lognormal, logistic, Weibull, gamma, beta, Gumbel). Data was collected from 23,846 sampling units of 6,787 sites in Korea from 2010 to 2021. The beta distribution model showed the best fit for positively skewed E. orientalis-sachalinensis and little-skewed E. strigata along with altitudinal gradient. The reversed lognormal distribution model showed the best-fit for negatively skewed E. separigata. E. orientalis-sachalinensis distributed at the range of altitude 1~700 m (mean 251 m, median 226 m, mode 124 m, and standard deviation 161 m), E. strigata distributed at the range of altitude 5~871 m (mean 474 m, median 478 m, mode 492 m, and standard deviation 200 m), E. separigata distributed at the range of altitude 7~846 m (mean 620 m, median 659 m, mode 760 m, and standard deviation 181 m). Altitudinal habitat suitability ranges were estimated to be 42~257 m for E. orientalis-sachalinensis, 335~644 m for E. strigata, and 641~824 m for E. separigata. Based on the altitudinal spectrum of suitability and altitude-related temperature analysis results, E. orientalis-sachalinensis was estimated to be thermophilic, E. strigata to be mesophilic, and E. separigata to be thermophobic. This is the first national-scale evaluation of the altitudinal distribution of Ephemera in Korea. These results will be used in a further research study on altitudinal shift of the species of Ephemera under climate change.
Using social network analysis (SNA), this case study examines the image of a unique festival in a well-established tourist destination on the East coast of the United State of America, the Myrtle ...Beach area of South Carolina. SNA emphasizes the importance of constructing interconnectedness among concepts and knowledge networks in respondents' minds. The technique visualizes complicated perception of tourists in a most simple but scientific way. Using concept maps and degree centralities derived from SNA, as well as dendrograms, this study provides insights on wine and food festival in Myrtle Beach Area. Together with cluster analysis, the SNA suggests unique contributions to the understanding of tourist behaviour in tourism destination research.
초등학생의 식품알레르기 교육 프로그램의 효과 평가 김하림(Harim Kim); 송경희(Kyunghee Song); 이영미(Youngmi Lee) ...
東아시아食生活學會誌,
2015, Volume:
25, Issue:
6
Journal Article
Open access
This study aimed to evaluate the educational effects of an education program about food allergies in elementary school children. We conducted an education program consisting of eight classes for a ...total of 4,744 students at 100 elementary schools in Seoul and investigated changes in knowledge and awareness about food allergies in participants using a questionnaire. A total of 576 students (12.1%) reported that they have taken medical treatment because of a food allergy. After education, the knowledge score of participants significantly increased from 2.7 to 3.3 out of 5.0 (p<0.001). The ratio of having a friend with a food allergy decreased from 24.7% to 19.8% (p<0.001). The participants responding as having helped a friend with a food allergy significantly increased from 15.5% to 17.7% (p=0.003). Before education, 16.8% of respondents answered that they felt pity for friends with food allergies, whereas this percentage significantly decreased after education (p=0.034). Among 576 students with food allergies, 21.5% reported that they felt depressed due to their food allergies before education. However, the percentage significantly decreased after education (p<0.001). These results suggest that the education program about food allergies for elementary school students needs to be extended more widely to children.
중환자실 환자의 욕창 발생 시기에 따른 관련요인의 차이 이미정; 서은정; 김미옥 ...
Chunghwanja Kanho Hakhoe chi,
10/2021, Volume:
14, Issue:
3
Journal Article
Open access
Purpose : This study aimed to present the incidence of pressure ulcers and identify different associated factors according to the time of occurrence of pressure ulcers in intensive care unit (ICU) ...patients. Methods : The participants were 313 patients who reported pressure ulcers among 2,908 patients in ICUs at a large tertiary hospital in Gyeonggi-do. Among them, 220 patients (70.3%) had a pressure ulcer before admission, and 93 patients (29.7%) reported newly developed pressure ulcers after admission to the ICU. Data were collected between August 2018 and April 2019. Along with the time of occurrence and characteristics of pressure ulcers, diverse associated factors were gathered through electronic medical records. Data were analyzed using descriptive statistics, independent t-tests, and 2-tests. Results : Different risk factors associated with pressure ulcers in ICU patients according to the time of occurrence were main diagnosis, score of acute physiology and chronic health evaluation, score of Richmond agitation sedation scale, level of consciousness, administered sedatives, use of a ventilator, insertion of a feeding tube, and the duration of fasting period. Conclusion : Based on the results of this study, healthcare providers, especially ICU nurses, should try to detect early signs and symptoms of pressure ulcers, taking into account the derived factors associated with pressure ulcers in ICU patients. Practical intervention programs and strategies considering the factors associated with pressure ulcers must be developed to prevent and alleviate such ulcers in ICU patients in the future.
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