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김성철,김진천,김인구,Kim, Soong-Chul,Kim, Jin-Cheon,Kim, In-Koo 대한소아외과학회 1995 소아외과 Vol.1 No.1
Anal fistula and perianal abscess in pediatric patients have been reported to have several characteristics, e.g. prevalent in less than 2 years of age, male preponderance, straight course of tract, and low type of fistula. We performed a retrospective study of twenty nine pediatric patients to see these characteristics comparing with the transitional age group of adolescents. Between June 1989 and December 1993, twenty-nine pediatric (<15year-old) and sixteen adolescent patients(${\geqq}$15, <25 year-old) with anal fistula and perianal abscess were treated by surgical intervention. Perianal abscess and anal fistula in the pediatric group had the predilection for male(100%), age less than two years (72.4%), low type(100%), and lateral localization(87.5%). But the features of the adolescent group were similar to those of adult. Twenty-one(87.5%) and 10(66.7%) enteric bacterial colonies were isolated from 16 pediatric and 11 adolescent patients, respectively. Considering the predominance of low type and the organisms cultured in the pediatric group, crypt-glandular infection seems to be a major preceding event. Incision and drainage were sufficient for cure in 15 among 16 perianal abscesses, and fistulas were cured by either fistulotomy or fistulotomy in all the 14 patients. The importance of effective drainage of perianal abscess and fistulotomy including internal opening cannot be overemphasized.
슬라이딩 상관기를 적용한 디지털 직접대역확산 송수신기의 설계 및 성능분석
김성철,진고환,Kim, Seong-Cheol,Jin, Go-Whan 한국정보통신학회 2012 한국정보통신학회논문지 Vol.16 No.9
In this paper, we design the sliding correlator SS transceiver which supports short message service. We also analyze the PN code acquisition circuit that is essential for spread spectrum receiver. Using Maxplus II tool provided by altera Co., Ltd, we have designed PN code generator, and sliding correlator for PN code acquisition. Then, they have been made into FPGA by way of EPM7064SLC44-10 - a chip of Altera Co., Ltd. Additionally, we have designed delay clock circuit which is faster than the clock of Tx PN clock, designed switching circuit to control the clock rate and data demodulation circuit. The performance of the transceiver is evaluated from the experimental results. Especially, the performance of PN code acquisition accomplished by sliding correlator which is very important to evaluate spread spectrum receiver is evaluated with the comparison of the lock states. 본 논문에서는 sliding상관기를 적용한 단문 메세지 서비스를 위한 대역확산 송수신기를 설계하고 대역확산 수신기에서 필수적인 PN코드 동기회로에 대한 성능을 분석하였다. 대역확산 시스템에 대한 이론적인 분석과 대역확산 수신기에 있어서 중요한 PN 코드 동기 회로에 대한 분석을 토대로 PN 코드 발생기, 클럭 발생을 위한 분주회로, 수신기에서의 PN 코드의 상관을 위한 슬라이딩 상관기 등을 Altera사의 칩 EPM7064 SLC44-10을 사용하여 FPGA화하였으며 디지털 설계가 용이하지 않은 주변회로인 슬라이딩 상관기에 필요한 PN코드 지연 클럭 발생회로, 동기 스위치제어회로, 데이터복조회로를 설계하여 전체적인 송수신기회로를 설계하였다. 설계된 회로를 실험을 통하여 송수신기의 성능을 평가 관찰하였다. 특히, 수신기에 있어서 역 확산을 위한 PN 신호의 동기과정의 성능 즉, 동기가 이루어 졌을 때의 동기 탐색/유지신호와 동기가 이루어지지 않았을 때의 게이트 지연시간으로 인한 동기 탐색/유지신호등의 결과를 통해 성능을 평가하였다. 슬라이딩 상관기의 경우 코드 동기를 위한 시간이 송수신 PN 코드의 불확정성이 클 경우 상당히 큼을 알 수 있었다.
김성철 ( C. Z. Jin ),김용훈 ( L. X. Jin ),이병오 ( B. O. Lee ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2012 강원 농업생명환경연구 Vol.24 No.1
China has a long history as an agricultural country, geographical indications of agricultural resources are very rich. If it has the protection of geographical indication legal system, will improve the quality and market competitiveness of agricultural products, thereby increasing farmers`` income. But China``s current status is in charge of the department set up to protect geographical indications on repeat, there is no independent legal system. These question not only for the protection of geographical indications Chinese impact on the efficiency, but also geographical indications of goods may have legitimate rights and interests conflict. In order to successfully solve these problems, it is necessary for the protection of geographical indications of goods related to the legal system and make changes, but there is a need for "Law on the Protection of geographical indications of goods." According to "Law on the Protection of geographical indications of goods" to build a management system and implementation of protection of geographical indications of goods.
폐경 전 · 후 여성의 8주간 유산소성 운동과 4주간 운동중단이 신체구성, 혈중지질 및 최대산소섭취량에 미치는 영향
김성철(Sung-Chul Kim),박해찬(Hae-Chan Park),박성규(Sung-Kyu Park),이광규(Kwang-Kyu Lee),이진석(Jin-Seok Lee),최연주(Yeon-Ju Choi),윤성진(Sung-Jin Yoon) 한국생활환경학회 2011 한국생활환경학회지 Vol.18 No.4
The purpose of this study was to compare the effect of 8 weeks aerobic exercise and 4 weeks detraining on body composition, blood lipid levels, maximal oxygen consumption in pre- and post-menopausal women. Twenty sedentary middle-aged women were randomly divided into two groups: Pre-menopausal Group (Pr-G: n=10) and Post-menopausal Group (Po-G: n=10). All of participants performed with aerobic exercise program(treadmill walking, duration consumption 200 kcal, 60% of VO₂max, 5 times/week) for 8 weeks and kept up 4 weeks detraining after aerobic exercise program. Body composition, blood lipid levels, maximal oxygen consumption of the participants were measured at beginning of aerobic exercise program (1st), repeated after 8 weeks aerobic exercise program (2nd) and 4 weeks detraining (3rd). Main results were as follows: 1) After 8 weeks aerobic exercise program, body fat (%), TC, LDL-C were decreased and HDL-C, VO₂max were increased and were maintained LBM in all groups. but Po-G showed lower decease rate than Pr-G in abdominal fat (%), TC, LDL-C. 2) After 4 weeks detraining, body fat (%) and VO₂max were regressed to before-exercise in all groups but before-exercise regression about abdominal fat (%), TC, LDL-C appeared in only Po-G. Therefore 8 weeks aerobic exercise was effective in positive changes of the body composition, blood lipid levels and cardiopulmonary function in Po-G but need to adjust the training volume or to combine the weight training. Also, Post-menopausal women were exposed more easy occurrence of abdominal obesity, metabolic and cardiovascular disease after 4 weeks detraining.
김성철 ( Cheng Zhe Jin ),신효중 ( Hio Jung Shin ),이병오 ( Byung Oh Lee ) 국제지역학회 2008 국제지역연구 Vol.12 No.1
본 논문에서 중국의 돼지고기 안전성 속성에 대한 가치평가를 목적으로, 선택형실험 설문을 통한 자료와 컨조인트분석을 이용하여, 각 속성별 부분가치효용을 추정한 다음 지불의사금액을 도출하였다.「속성」은 상품의 가치를 결정하는 요인이고, 그 속성이 어떻게 구성되어 있는지를 구체적인 단어나 수치로 표현한 것이「수준」인데, 본 논문에서는 ①「안전성 인증표시」, ②「사료첨가제」, ③「잔류 항생제 성분」, ④「등급」, ⑤「500g당 가격」등 5개의 속성을 설정하였고, 각 속성별로 ①에는 HACCP, 녹색식품 인증, 생산농장 표시, ②에는 사용, 미사용, ③에는 있음, 없음, ④에는 고급육과 보통육, ⑤에는 8위엔, 10위엔, 12위엔, 14위엔 등으로 수준을 설정하였다. 다항로짓모형에 의한 계측결과를 보면, 안전성 인증표시, 사료첨가제, 잔류 항생제 성분, 등급 등의 속성 부호가 ``+``로 도출되었는데, 이는 안전성 인증 표시가 있고 사료첨가제 및 잔류 항생제 성분이 없는 돼지고기에 대해, 그리고 등급이 높은 돼지고기에 대해 추가 지불의사가 있음을 나타낸다. 가격의 부호가``-``로 도출된 것은 가격이 높을수록 구매의향이 없다는 것을 나타낸다. 한계지불의사금액은 각각 사료첨가제가 16.5위엔, 잔류 항생제 성분이 15.4위엔, 안전성 인증표시가 7.3위엔, 등급이 6.9위엔으로 계측되었다. The purpose of this paper is to derive the monetary values of pork safety in China using choice experiments questionnaires. The survey data were analyzed by conjoint analysis method with multinomial logit model. Those of all other estimates were turned out be positive while its sign of the price variable negative. It means that survey respondents will be willing to pay for the pork safety and will not be willing to purchase it as its price increases. The marginal willingness to pay for various attributes of pork safety were estimated as to be 7.3 yuan per 500g for the safety labeling preference, 16.5 yuan per 500g for the rBST, 15.4 yuan per 500g for the pesticide-residue, and 6.9 yuan per 500g for the quality grade. Therefore, it can be concluded that even though higher price is paid, the pork with guaranteed safety and good quality will be preferred to without them.
제품속성, 브랜드 및 기업 이미지가 소비자의 구매의도에 미치는 영향 -중국 9개 지역의 휴대폰시장을 중심으로-
김성철 ( Cheng Zhe Jin ),박의범 ( Eui Burm Park ) 국제지역학회 2008 국제지역연구 Vol.12 No.3
The Chinese cellular phone markets growth has the character which is two-sided gives the chance and threat in Korean mobile communication industry. This also demands the localization of the international marketing strategies which establishes in grasp of consumer consuming propensity and purchase intention. It is the goal that provides a strategic current point to the Korean enterprise which enter to China. To observe a test of hypothesis results concretely from empirical analysis with after words is same. The hypothesis 1, `corporate image really will plus affect(+) in purchase intention` the hypothesis was adopted. The hypothesis 2, `brand image really will plus affect(+) in purchase intention` also the hypothesis was adopted. The hypothesis 3, `product attributes really will plus affect(+) in purchase intention` also the hypothesis was adopted. The other research hypothesis which sex and age were rejected, school was adopted partially, others was adopted. When about the consumer who is used from empirical analysis measurement items in the center application presents the strategies which is possible in fact.