• 한국태양광발전학회지
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• 제4권2호
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• pp.14-24
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• 2018

The potential induced degradation (PID) phenomenon of crystalline silicon photovoltaic (PV) modules has been often found in outdoor PV systems until recently since firstly reported in 2010. Many studies have been conducted about the mechanism and the preventive methods, but systematic diagnosis of the PID has not been applied on-site. This paper focuses on analysis of 5 categories and 10 PID diagnosis methods using the monitoring data, light current-voltage, dark current-voltage, infrared and electroluminescence. We expect to contribute to improvement of power generation through PID diagnosis and troubleshooting in PV plants.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.1603-1603
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• 2011

As time goes by these cables make a insulation problems, and ask for a preventive diagnosis method. Cable has very high electrostatic capacity and insulation defects mainly caused by water-tree(WT). Dissipation factor test is very useful for detecting WT but it needs huge power supply. In this paper we presented a cable insulation diagnosis by dissipation factor using low frequency power supply.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1999년도 전력전자학술대회 논문집
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• pp.243-247
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• 1999

An electrolytic capacitor is widely used in a motor drive system. Therefore, the deterioration diagnosis of an electrolytic capacitor is needed of preventive maintenance of the system. In this paper, we propose a new diagnosis method for the electrolytic capacitor by using the system identification method, which presents the information about the capacitor's interna parameters in on-line operation an use fuzzy algorithm for the deterioration decision. We demonstrated the effectiveness of the proposed control scheme by using computer simulation.

• 대한예방한의학회지
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• 제8권2호
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• pp.31-44
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• 2004

Bibliographic study on pediatric Chuna in the Myung Chung dynasties resulted as the following. 1. Pediatric Chuna experts in Myung dynasty utilized methods of Chuna to a great extense as means of preventing and treating various kinds of pediatric disorders. 2. Pediatric Chuna experts in Myung dynasty put emphasis on diagnosis through the doctor's inspection. 3. Pediatric Chuna experts in Myung dynasty developed and applied special acupoints for pediatric Chuna. 4. Pediatric Chuna experts in Myung dynasty put emphasis on replenishing and discharging according to hand manipulation. 5. Pediatric Chuna experts in Myung dynasty developed and applied methods of massaging with herbal medicine. 6. Pediatric Chuna experts in Myung dynasty put methods of Chuna into songs for handier use. 7. Pediatric Chuna experts in Chung dynasty corrected the errors of the predecessors and further developed the handed down advantages. 8. Pediatric Chuna experts in Chung dynasty specifically combined the theories of Chuna with characteristics of pediatric physiology. 9. Pediatric Chuna experts in Chung dynasty described treatments by symptoms systematically. 10. Pediatric Chuna experts in Chung dynasty, criticizing the trend at the time of despising pediatric Chuna, endeavored to spread pediatric Chuna. 11. Pediatric Chuna experts in Chung dynasty arranged the relationship between hand manipulation of Chuna and herbal medicine. 12. Pediatric Chuna experts in Chung dynasty arranged various kinds of methods for diagnosis, including diagnosis by palpation of the chest and the abdomen. 13. Pediatric Chuna experts in Chung dynasty combined the method of multiple hand manipulation and method of basic hand manipulation. 14. The theories of pediatric Chuna before Myung Chung dynasties only put emphasis on Ki and Blood, not combining with the basic principles of Korean medicine like Eum/Yang and Five Phases. The scholars of Myung Chung dynasties came to successfully combine the principles of Korean medicine like stability theory, Jang and Bu (internal organs) theory, and Eum-Yang theory with the theories of pediatric Chuna. This combination best characterizes the theories of pediatric Chuna in the Myung Chung dynasties.

• Journal of Preventive Medicine and Public Health
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• 제22권3호
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• pp.406-422
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• 1989

This study is aimed at developing a nutritional task of a community' as a public health activities of Su-Dong Myun, Demonstration Project area of Ewha Womans University. The content of this study is the points of nutritional diagnosis for the residents nutritional evaluation, the analysis of the related factors and the educational material with Nutrition Education-Index. Two hundreds housewives were examined during the period of Jan. 20 to Jan. 30 in 1989. 1. In terms of the housewives' age, those aged 30 to 39 were 32.5% which was the highest and educational level, graduation of primary school was 31.5% which was the highest. The housewives who had no job were 60.0% and those who participated in community activities were 56.5%. 2. In terms of the points of nutritional diagnosis, 50 to 74 points were 51.5% which was the highest and total average was $65.1{\pm}15.0$. 3. As for the points of nutritional knowledge, the average was 54.9 points, attitude was 77.4 points and eating practice was 70.8points. 4. The number of clinical symptoms of nutritional deficiency was 16.1 ones per person. 5. As for the relation which nutritional knowledge, attitude, eating practice exert on one another, nutritional knowledge has negative correlation with eating practice(-0.04) and attitude has some correlation with eating practice(0.17). 6. The variable having to do with the points of nutritional diagnosis showed the highest correlation coefficient(0.55) as the points of nutritional knowledge. 7 As for the variable having to do with the number of the symptoms of nutritional deficiency, the higher points of knowledge(-0.05) is, the higher the totai averse points of nutritional diagnisis(-0.09) is, negative correlation was appeared. 8. The result in which the variant having to do with the number of clinical symptoms of nutritional deficiency was analyzed by multiple regression analysis showed that the lack of time for preparing meals in non agricultural households made the greatest contribution (9% explained) and the households having vegetable garden made the second greatest contribution(3% explained).

• Journal of Preventive Medicine and Public Health
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• 제16권1호
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• pp.157-162
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• 1983

In order to determine the factors affecting the length of stay by pay status, a total of 961 in-patients medical records with appendectomy. cholecystectomy and Cesarean section discharged from the January 1979 to December 1981 from the University hospital were reviewed. Average length of stay showed no statistically significant difference by year between the insured and the non-insured patients, however multiple diagnoses and surgical complication were significantly different from single diagnosis and non-complicated cases. Surgical complication explained the length of stay mostly, and physician in discharge, multiple diagnoses, and accommodation in order for insured patients. Surgical complication, admission route, physician in charge and age in order explained the length of stay for non-insured patients.

• Journal of Preventive Medicine and Public Health
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• 제53권5호
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• pp.381-386
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• 2020

Objectives: Few studies have been published regarding the relevance of the admission diagnosis to the smoking cessation rate. We studied smoking cessation rates in relation to admission diagnoses in our inpatient smoking cessation programmes. Methods: This retrospective study included all patients recruited into our inpatient smoking cessation programmes at 2 institutions in Singapore between June 2008 and December 2016. Patients were given individualized intensive counselling and were followed up via phone interviews for up to 6-month to assess their smoking status. Multivariable logistic regression was used to analyse potential associations between admission diagnoses and 6-month abstinence. Results: A total of 7194 patients were included in this study. The mean age was 54.1 years, and 93.2% were male. In total, 1778 patients (24.7%) were abstinent at the 6-month follow-up call. Patients who quit smoking tended to be of Chinese ethnicity, have initiated smoking at a later age, be better educated, and have lower Fagerström Test of Nicotine Dependence scores. After adjusting for these factors, patients with a cardiovascular admission diagnosis had a significantly higher probability of quitting tobacco use than patients with a respiratory or other diagnosis. Conclusions: In patients acutely admitted to the hospital, a diagnosis of cardiovascular disease was associated with the highest quit rate. Smoking cessation interventions need to be incorporated into all cardiovascular disease treatment pathways to leverage the patient's motivation and to improve the quit rate. In addition, patients in groups with lower quit rates may benefit from more intensive programmes to increase the rate of successful cessation.

• Asian Pacific Journal of Cancer Prevention
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• 제14권8호
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• pp.4723-4725
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• 2013

Background: Bladder cancer is a major health problem, especially among men. Opium addiction can be an important risk factor. One important question is whether it can affect the age of onset of bladder cancer. We performed this study to evaluate this question. Materials and Methods: In a cross-section study, records of patients diagnosed with bladder carcinoma in Shahid Labbafinejad Medical Center, within 1999-2008 were included. Data were extracted from records regarding age at onset, gender, smoking status, and opioid addiction and analyzed with SPSS 13. Results: Within 10 years, 920 cases were diagnosed with bladder cancer of which 97 percent were transitional cell carcinoma. In 698 cases, opium addiction status was recorded in 21.3% (n=149). Age at diagnosis was $59.7{\pm}11.51$ (median: 60) among opioid addicts which was significantly lower than nonaddicts ($63.1{\pm}13.65$, Median: 65) (P<0.001). Conclusions: Opium addiction can decrease the age of onset of bladder cancer.

• 대한예방한의학회지
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• 제17권1호
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• pp.137-147
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• 2013

Objectives : This study aims to report current trend of Mibyeong health policy and service in China from interview of China Technology Research Group. Methods : China Technology Research Group visited Guanganmen hospital, Yanhuang Dongfang Company, Xinjingzhen health center, and Shanghai Shuguang hospital. With an interpreter, We had interviews about Mibyeong health service and policy trend, medical instrument, and research issue. Results :Mibyeong health service was performed based on KY3H system and collaboration with traditional Chinese medicine hospital. Mibyeong health service consists of diagnosis with nine constitutional type, health guide and preventive treatment. Community health center also provide Mibyeong health service, with cooperative treatment of traditional Chinese medicine and western medicine. China's Mibyeong health policy is established by Top-down decision, even though there is not enough evidence for providing health service to consumer. Through constitutional diagnosis, examinations, and treatment, huge data have been stacked; however, assessment and research based on these data are not processed well. Cooperative treatment of traditional Chinese medicine and western medicine is widely provided to patients, and their works are relatively well classified. Conclusions : China plays leading role in Mibyeong service and it seems to be developed more than Korea's. Further study is necessary to establish Mibyeong policy and health service in Korea.

• 보건교육건강증진학회지
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• 제32권3호
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• pp.23-31
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• 2015

Objectives: The contribution of health behavior is high in the mortality variation. Mortality variation can be decreased through the policies and programs for improving health behavior. We investigated that health behaviors effected with standardized mortality in community. Methods: We examined the distribution of health determinant factors and correlation analyzed between factors and performed multiple linear regression. Data were collected from 2012 Community Health Survey in 253 communities, annual regional statistics, and statistics from Statistics Korea. Results: This study defined that the variation of standardized mortality and there are exist inequality level of health determinant factors in 253 communities. This study showed that the higher standardized mortality explained through health behavior factors of the current smoking rate, walking exercise rate and diagnosis of hypertension or diabetes rate after adjusted other factors(adjusted $R^2=0.709$, p<0.001). Conclusions: Smoking, walking exercise and diagnosis chronic disease affecting on the regional variation of standardized mortality. These factors can be improved by the local residents themselves.