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        • KCI등재

          뉴욕 시의 무거주자 문제에 관한 소고 : Part of the Solution 뉴욕 시 브롱스 구의 한 무료 숙식소를 중심으로

          서영민 한국문화인류학회 1994 韓國文化人類學 Vol.26 No.1

          The United States is one of the wealthiest nations in the world, yet many of its citizens suffer extreme hunger and poverty. It is especially ironic that in New York City, where more money changes hands every day than in any other city in the world, so many people do not have life's basic necessities. Anyone who visits New York City will encounter homeless people everyday, everywhere. As many studies show, homelessness is one of the most serious problems in the United States today. In 1992, one survey indicated that 200,000 homelessness people were living on the streets of New York City out of the total United States homelessness population of 2.5 million. Still, there are few attempts to solve this human tragedy, either by the government of the United States or by the homeless themselves. This paper is a result of the two-year ethnographic research project on a grassroots organization which provides free accommodations, including free meals, free shelter and some basic social services for homeless people and the poor neighbors in a slum area of Bronx, New York City. "Part of the Solution(POTS)" is the name of the organization which consists of a soup kitchen, a homeless shelter, and four affiliated grassroots organization or by POTS. In this paper, I describe activities that are either engaged in by the individuals or by POTS. This paper also shows how homeless people and the poor neighbors who regulary depend on POTS, survive in extremely limited social conditions, and struggle against the odds in their lives. In addition, this paper shows the activities of grassroots organizations. I obtained data through intensive participant observation and in-depth interviews. Clearly, POTS and its efforts are not to be 'the answer' for the homelessness in the United States. An institution like POTS is literally a 'Part of the Solution' for homeless problem. It does help the homeless people in terms of providing free accommodations and places to organize collectively for social movements. The key to solving the problem of homelessness, however, should depend on complete and racial reform by the US government and collective action from homeless people themselves.

        • KCI등재후보

          견인전동기 구동시스템의 소음 저감을 위한 MRSF -PWM 방식

          서영민 전력전자학회 2002 전력전자학회 논문지 Vol.7 No.3

          In PWM inverters used in traction motor drive systems, the switching frequency is restricted by their large power capacity and thus the electromagnetic acoustic noise is generated. To reduce such an audible noise, the new MRSF-PWM(Modified Random Switching Frequency PWM) method is proposed. In the proposed MRSF- -PWM method, both triangular wave and sawtooth wave are used together as carrier waves for harmonic diffusion and reference wave is generated by injecting 3rd harmonic into the sine wave to expand the linear control region of output voltages. To verify the validity of the proposed MRSF-PWM method, computer simulations are carried out. And the results show that the MRSF-PWM method is more excellent than other RPWM methods in the aspects of both linearity and harmonic diffusion and more effective than SPWM (Sinusoidal PWM) method for the reduction of an audible noise. 견인전동기 구동시스템에 사용되는 PWM 인버터는 전력용량이 크기 때문에 스위칭주파수가 제한되며, 따라서 전자기적 가청소음이 발생한다. 이러한 가청소음을 줄이기 위하여 새로운 MRSF-PWM 방식을 제안한다. 제안한 MRSF-PWM 방식에서는 고조파를 확산시키기 위해 삼각파와 톱니파를 함께 운송파로 사용하며, 출력전압의 선형제어범위를 넓히기 위해 정현파에 3차 고조파를 주입한 파형을 기준파로 사용한다. MRSF-PWM 방식의 타당성을 검증하기 위하여 컴퓨터 시뮬레이션을 수행하였다. 그 결과, MRSF-PWM 방식이 선형성 및 고조파 확산면에서 다른 RPWM 방식보다 우수하며 가청소음 저감면에서 SPWM 방식보다 효과적임을 확인하였다.

        • KCI등재

          암환자의 피로와 관련된 포괄적 예측요인에 대한 분석

          서영민,오현수,서화숙,김화순 한국간호과학회 2006 Journal of Korean Academy of Nursing Vol.36 No.8

          Comprehensive Predictors of Fatigue for Cancer Patients Seo, Young Min1)․Oh, Hyun Soo2)․Seo, Wha Sook2)․Kim, Hwa Soon2) 1) Nurse, Inha University Hospital, 2) Professor, Department of Nursing, Inha University Purpose: This study was conducted to identify comprehensive predictors of fatigue in cancer patients. Methods: One hundred ten cancer patients visiting in-patient or out-patient clinics of a university hospital located in Incheon participated in this study. Results: The hematologic indicators (WBC and Hemoglobin) were significant for explaining fatigue. The psychological factors of fatigue were statistically significant. Both anxiety and depression, included as psychological factors, were significant in explaining fatigue in cancer patients. The influence of physical factors on fatigue was also statistically significant. Among the variables included as physical factors, pain, nausea/vomiting/anorexia, and sleep disturbance were significant whereas, dyspnea was not significant. The influence of the daily activity factor on fatigue was statistically significant. Among the variables included as daily activity factors, regular exercise or not and the usual activity level were significant in explaining fatigue of cancer patients, while the level of rest was not statistically significant. Conclusions: From the study results fatigue of cancer patients appeared to be influenced by multidimensional factors, such as physiological, physical, psychological, and activity related factors.

        • KCI등재

          Multistep-Ahead Flood Forecasting Using Wavelet and Data-Driven Methods

          서영민,김성원,Vijay P. Singh 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.2

          Accurate forecasting of floods is vital for developing a flood warning systems, flood prevention, flood damage mitigation, soilerosion reduction and soil conservation. The objective of this study is to apply two hybrid models for flood forecasting andinvestigate their accuracy for different lead times. These two models are the Wavelet-based Artificial Neural Network (WANN) andthe Wavelet-based Adaptive Neuro-Fuzzy Inference System (WANFIS). Wavelet decomposition is employed to decompose theflood time series into approximation and detail components. These decomposed time series are then used as inputs of ArtificialNeural Network (ANN) and adaptive Neuro-Fuzzy Inference System (ANFIS) modules in the WANN and WANFIS models,respectively. The WANN and WANFIS models yielded better results than the ANN and ANFIS models for different lead times. TheWANN and WANFIS models performed almost similarly. However, in terms of model efficiency, the WANFIS model was superiorto other models for lead times of 1 to 6 hours, and the WANN model was superior to other models for lead time of 8 to 10 hours. Theresults obtained from this study indicate that the combination of wavelet decomposition and data-driven models, including ANN andANFIS, can improve the efficiency of data-driven models. Results also indicate that the combination of wavelet decomposition anddata-driven models can be a potential tool for forecasting flood stage more accurately.

        • KCI등재

          (${\ll}$급유방(及幼方)${\gg}$에 수록(收錄)된 의안(醫案)에 대한 연구(硏究)

          서영민,하기태,김준기,김장현,Seo, Young-Min,Ha, Ki-Tae,Kim, June-Ki,Kim, Jang-Hyun 대한동의생리학회 2007 동의생리병리학회지 Vol.21 No.1

          ${\ll}$Gup Yu Bang${\gg}$ is the first korean book that specialized in pediatrics. It was written by Jo Jeong-jun in 1869 and contains 87 medical records. Medical records is one of the best way to develop one’s abilities of curing a disease without clinical practice and understanding medical condition of the time. These days we are fully aware of the importance of medical records, but there is no sufficient paper or study on medical records. On this study, we investigate 87 medical record of ${\ll}$Gup Yu Bang${\gg}$ by statistical methods. It was analyzed on the base of items such as age, sex, disease, method of medical treatment, treating prescription, modified medicinal substance, progress of disease. ${\ll}$Gup Yu Bang${\gg}$ contain 87 medical records and among of them, 84 records were Jo Jeong-jun own writings of clinical case. Systemic division of disease showed the highest in digestive disease and most frequent case was symptom of vomiting and diarrhea. The distribution of age was showed the highest in the age group under 5 years and the number of male case was more than female case. It showed that he considered observation of the patient's expression in diagnosis methods and have used 87 kinds of treating prescription and the external treatment, acupuncture, moxa. It showed that he quoted a lot of treating prescription from ${\ll}$Dong eui bo gam${\gg}$, ${\ll}$Yi-Hak-Yip-Mun${\gg}$ and ${\ll}$Xiao Er Yao Zheang Zhi Jue${\gg}$. The further study on medical records in traditional medical literatures, would reveal the developmental progress of Korean pediatrics and inform more actual proof on medical condition of the time.

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