내시경역행성담췌관조영술 후 발생한 종격동기종, 피하공기증, 긴장성 기흉 1예

조용건,이현승,권균홍,김자영,김봉진,김지연,배용목,박선자 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.4

However, Endoscopic retrograde cholangiopancreatography (ERCP) is still helpful procedure for the diagonosis of the pancreatobiliary disease and treatment through endoscopic sphinterectomy (EST) is relatively safe, these have possiblity of complications such as hemorrhage, infection, panceatitis, and perforation. ERCP related perforation was rarely reported in 0.3 to 1.1% of previous study, but most serious complication. A report of Pneumomediastinum, Tension Pneumothorax complicating perforation after ERCP and EST is very uncommon. In our hospital, we experienced case of pneumomediastinum, subcutaneous emphysema, and tension pneumothorax after ERCP and EST, and the patient (a 58 years old female with suspicious common bile duct stone) was treated successfully with conservative treatment.

냉각유로를 가진 발열체주위에서의 열전달에 관한 연구

김동균,박용진,배석태,김시범 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.2

In this study was performed on the characteristics of heat transfer analysis by numerical method in a double horizontal channel with internal heat source, up and down side walls are adiabatic condition. Pseudo PCB(Printed Circuit Board) with cooling hole its located front of heat source. This channel have two heat sources that its condition is uniform heat flux maintenance 5W, upper channel and lower channel inlet valocity 0.3m/sec and outlet open condition. Parameter is cooling hole's size for three cases and increasing heat flux(10W, 15W) for one case.

발열체를 가진 2중 수평채널에서의 전열특성에 관한 연구

김동균,박용진,배석태,김시범 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.1

In this study was performed on the characteristics of heat transfer analysis by numerical method in a double horizontal channel with internal heat sources, up and down side walls are adiabatic condition. Pseudo PCB(Printed Circuit Board) with cooling hole its located around heat source. This channel have two heat sources that its condition is uniform heat flux maintenance 5W, upper channel and lower channel inlet velocity 0.2m/sec and outlet open condition. Parameter is cooling hole's location on the plate(PCB) and increasing heat flux(10W,15W) for one case.

폐결핵치료 중인 환자에서 Rifampicin에 의해 유발된 위막성 대장염 2예

김봉진,권균홍,임창섭,김자영,홍정범,옥미선,배용목,김지연 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.4

Pseudomembranous colitis (PMC) is a disease caused by Clostridium difficile proliferation. The causative drugs are clindamycin, third-generation cephalosporins, flouroquinolone and so on. Rifampicin has been reported as a cause of PMC in the 1980s, and the frequency of PMC is increasing because rifampicin is a first line drug for anti-tuberculosis therapy. Two patients were recently admitted to our hospital due to watery diarrhea for 1 month and they were diagnosed with PMC by sigmoidoscopy. Their onset age were 74, 72 years old and latent period of symptoms were 60, 129 days, respectively. In one case, the patient displayed coexisting hypertension and diabetes. The clinical symptoms improved after discontinuing the rifampicin and then administering oral metronidazole. We report here on two cases presumed to be rifampicin-induced PMC.

일부 도시지역 노인들의 우울과 일상생활능력에 관련된 요인

박원규,이태용,정용준,오장균,이동배,조영채 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1

This study was performed to provide the basic data and related factors available for the assessment of the degree of ADL and depression among older persons, manifesting their physical and psychological status. The subjects included the old people aged more than 65 years old who reside in urban areas. The interviews were delivered to 693 individuals in Taejon metropolitan city during the two-month period from June to July, 2000, and Zung Self-Rating Depression Scale and IADL developed by Older American Resources and Services of Duke medical college, were employed for the assessment of depression and IADL, respectively. The collected data were statistically processed by SPSSWIN(ver 10.0) and led to the following results. The degree of depression among 635 subjects showed that 26.6% had mild depression, 8.2% moderate and 0.6% severe while 64.6% were normal. In terms of IADL, 6.9% had impossible IADL when not aided by others, 37.0% needed some help, 56.0% possible IADL, and the higher depression scores, the significantly higher IADL scores. Based on general characteristics, depression scores were significantly higher in the female group, the older, the lower educated, the ones without cohabitants, without a spouse, without making expenses of living on their own, and IADL scores were lower, meaning the lower capability for performing daily activities, in the male group, the older, the higher educated, the group without a spouse, without making expenses of living on their own. Based on daily activities and psychological characteristics, depression scores were higher in the group who don't go out, who don't have recreational or friendly gatherings, who aren't satisfied with the lives of the past or present, who have a sense of isolation, and who don't have the will to live, and IADL scores were lower in the group who don't go out, who don't have recreational or friendly gatherings, who aren't satisfied with the lives of the past or present, who have a sense of isolation. and who don't have the will to live. Multiple regression analysis revealed that the explanatory variable having effects on depression symptoms included, with the explanatory power of 57.5%, the confidence in life, the degree of education, the subjective index of health, the sense of isolation, the exercise, the degree of IADL, the gender, the level of satisfaction with life, whether they eat breakfast or not, the concern about life, the smoking, the going out, the presence of spouse or not. The explanatory variables having effects, with the explanatory power of 28.9%, on IADL scores included the degree of depression symptoms, the age, the presence of friends or not, the frequency of outgoing, the level of education, the degree of obesity, the confidence in life, the level of satisfaction with life, the drinking or not. The study results showed that the higher depression scores had a tendency to be associated with the decreased capabilities of performing daily activities, and that the factors related to depression and/or IADL, included the confidence in life, the level of education, and the level of satisfaction with life. However, the more detailed and decisive results on the factors related to depression and IADL of the older persons are considered to require continuing efforts and comparisons among a variety of the older population.

장애,비장애인 휠체어 농구선수의 유산소 능력

김성수,이동희,황부근,신말순,배종진,윤진환,지용석,안희구 한국특수체육학회 2002 한국특수체육학회지 Vol.10 No.2

The purpose of this study was to analyzed the aerobic capacity of disability· able-bodied wheelchair basketball players. Cardiorespiratory parameters were measured during graded maximal exercise test. Exercise time, HRpeak, oxygen uptake(VO_2, L·min^-1, ml·min^-1·kg^-1), carbon dioxide production(VCO_2, L·min^-1), ventilation(L·min^-1) were examined in disability national elite male wheelchair basketball at letes(DA, N = 10), able-bodied wheelchair basketball athletes(AA, N = 10). All data were expressed in means and standard deviation. Exercise time, HRpeak, oxygen uptake, carbon dioxide production, ventilation were not different between groups. In conclusion, aerobic capacity of disability national elite male wheelchair basketball athletes is the same able-bodied wheelchair basketball athletes. These finding suggest that chronic wheelchair basketball training produce local adaptations in the functional upper body musculature.

Ex Post Liability, Ex Ante Safety Regulation, and Impending Product Recalls

Yong-Kyun Bae(배용균) 한국산업경제학회 2016 산업경제연구 Vol.29 No.1

본 논문은 자동차에 내재된 잠재적 결함이 어떻게 자동차 리콜을 유발하는가에 대하여 연구하였다. 2014년도 미국에서의 자동차 리콜에 관한 자료를 이용하여, 본 연구자는 자동차 제조사들이 어떻게 리콜결정을 내리고 어떠한 요인들이 그 결정에 영향을 미치는지 연구하였다. 본 논문은 제조사들이 자동차 결함으로 인한 제조물 책임에 관련된 잠재적인 기대비용이 증가할 때 리콜을 하는 것은 밝혔다. 특히 자동차 제조사들은 자신들에게 보고되거나 미국 도로교통안전국(NHTSA)에 보고된 과거에 발생한 자동차 사고로부터 발생한 피해에 관한 정보를 적극 이용한다. 저자는 또한 규제당국의 적극적인 조사활동이 기업의 리콜을 유발한다는 것을 밝혀내었다. 이는 규제당국의 적극적인 조사활동이 기업들에게 강력한 사전경고의 역할을 하는 것을 의미한다. 제조사들이 신년도 모델을 출시할 때, 많은 제품변화가 있을 경우, 출시 후 첫해동안 자동차 리콜이 증가하는 것으로 나타났다. 이는 자동차 시장의 과도한 경쟁에 직면한 제조사들이 자동차에 새로운 기능들이나 신기술을 채택할 경우, 예상치 못한 결함이 증가하기 때문인 것으로 드러났다. 결론적으로 자동차 제조회사들은 그들의 제품이 가지고 있는 잠재적 위험에 대해 적극적으로 대처하고 있음을 밝혔다. 특히, 자동차 제조회사들은 격렬한 경쟁에 직면하여 자동차 결함으로 인해 발생하게 될 미래 소송을 포함한 제조물 책임과 관련된 비용을 피하기 위하여 리콜을 적극적으로 이용하고 있는 것으로 파악되었다. 본 논문은 한국의 자동차 산업의 리콜규제와 관련된 유의미한 정책적 함의를 제공해 주고 있다. 결함이 의심되는 자동차 사고와 관련된 신고와 보고서들은 정부 규제당국의 관리 하에 엄격하게 관리되고 사용되어야 하며, 축적된 자료를 바탕으로 결함이 확실시되는 경우, 보다 적극적인 조사를 통하여 리콜을 강제하고 리콜 제도를 강화함으로써 미국을 비롯한 선진국 수준의 도로교통 안전규제를 통하여 공공의 안전을 담보해야 한다. This paper investigates how potential defects in automobiles lead to vehicle recalls. Using data on vehicle recalls in the United States in 2014, I identifies how vehicle manufacturers make their recall decisions and what factors they consider to issue recalls. Using both a unique data and an empirical model, this paper finds that manufacturers issue recalls when higher expected liability costs are anticipated. In particular, vehicle manufacturers use information on the damages that have occurred in previous accidents reported to either the regulatory agent or themselves. I also find that the regulatory agent’s investigative actions are positively associated with more recall issuance, which implies that their investigative activities send manufacturers a strong message to correct problems, given that recall issuance is basically voluntary. If there is a model change in a new-year model, then there are more recalls during the first year of sales. This shows that it is inevitable for manufacturers to issue more recalls because more defective parts are found in the process of adopting and introducing new features from facing competition in the automobile market. In conclusion, manufacturers, facing severe competition, issue more recalls to avoid expected liability costs from defects.

Adequacy of sentinel lymph node biopsy in malignant melanoma of the trunk and extremities: Clinical observations regarding prognosis

Bae, Yong Chan,Jeong, Dae Kyun,Kim, Kyoung Hoon,Nam, Kyung Wook,Kim, Geon Woo,Kim, Hoon Soo,Nam, Su Bong,Bae, Seong Hwan Korean Society of Plastic and Reconstructive Surge 2020 Archives of Plastic Surgery Vol.47 No.1

Background Methods for identifying local lymph node metastasis in malignant melanoma include sentinel lymph node biopsy (SLNB) and lymph node dissection (LND). In particular, SLNB has been widely used in recent years. This study aimed to retrospectively confirm the adequacy of the current indication criteria for SLNB by applying those criteria to a mixed group of patients who previously received SLNB and LND. Methods This study included 77 patients with malignant melanoma of the extremities and trunk who were monitored for >24 months. The patients were classified according to whether the current indication criteria for SLNB were applicable. The sentinel lymph nodes were evaluated for each group. Patients for whom the indication criteria for SLNB and LND were applicable were analyzed according to whether SLNB or LND was performed. Finally, the outpatient records of these patients were reviewed to evaluate recurrence, metastasis, and prognosis. Results Of the 77 patients, SLNB was indicated according to the current criteria in 60 cases. Among the 60 patients for whom SLNB was indicated, 35 survived the follow-up period disease-free, 21 died during the follow-up period, and four experienced metastasis. The 17 patients for whom SLNB was not indicated had no recurrence or metastasis. Conclusions Patients for whom SLNB was not indicated had no recurrence or metastasis. In cases where SLNB is indicated, the possibility of metastasis and recurrence may be high even if SLNB is negative or LND is performed, so more aggressive treatment and careful follow-up are crucial.

Do Foreign Vehicle Manufacturers Delay Recalls? The Case of the Korean Car Market

Yong-Kyun Bae 한국응용경제학회 2018 응용경제 Vol.20 No.4

본 논문은 한국 자동차 시장에서의 자동차 제조회사들의 리콜결정과 그 요인 들을 분석하였다. 특히 자동차 결함이 확실시될 때, 어떤 회사들은 신속히 리콜 을 결정하는데 반해 왜 다른 회사들은 리콜을 지연시키는가에 대해 분석하였다. 우리는 자동차 제조회사들이 리콜을 결정하는 데에 있어 결함의 심각성, 결함에 따른 예상책임비용, 그리고 리콜 비용이 중요한 요인들임을 밝혔다. 또한 한국 자동차 시장에서 외국자동차 제조회사들의 사전 리콜기간이 국내 제조사의 그 것보다 더 길다는 점도 아울러 밝혔다. 이들의 리콜은 한국 자동차 리콜에 비해 서 보통 1년에서 4년 정도 지체되었다. 유럽 자동차 제조회사들의 리콜은 미국 시장에서는 지체되지 않았으나 한국시장에서는 지체되었다. 한국 자동차 제조사 들의 리콜은 미국시장에서 지체되지 않았으나 반대로 미국 자동차 제조사들의 리콜은 한국에서 지체되었다. 일본의 제조사들은 한국과 미국시장에서 동일한 사전 리콜기간을 보여 주었다. 배출가스 관련 리콜의 사전 리콜기간이 안전 관 련 리콜의 그것보다 긴 것은 기업들이 가급적 리콜을 피하려고 한다는 사실과 무관해 보이지 않았다. This paper investigates vehicle manufacturers' recall decisions, and their determinants in Korea. In particular, it identifies why some manufacturers are slow to issue recalls, while others are quicker. We find that vehicle manufacturers make recall decisions based on the degree of risk, expected liability, and recall costs from defective vehicles. We also find that all foreign manufacturers have longer pre-recall periods in the Korean market. They delay their recalls for about one to four years, compared to Korean manufacturers' faster-recalls. European manufacturers do not show any procrastination in the US market, but do in the Korean one; US manufacturers show the same pattern. Korean exporters do not procrastinate in the US market; however, US exporters do in the Korean one, and Japanese manufacturers have longer pre-recall periods in both markets. The fact that emission-related recalls have longer pre-recall periods than safety-related recalls could be indirect evidence on manufacturers' reluctance in recall issuance whenever possible.

Do Foreign Vehicle Manufacturers Delay Recalls ? The Case of the Korean Car Market

Yong-Kyun Bae 한국지방정부학회 2018 한국지방정부학회 학술대회 논문집 Vol.2018 No.3