사업장 소음 폭로에 의한 일과성 역치 상승과 회복

조수헌,하미나,한상환,주영수,성주헌,강종원,윤덕로,송동빈,이명학,김선태 大韓産業醫學會 1996 대한직업환경의학회지 Vol.8 No.2

To determine the recovery time from noise-induced temporary threshold shift(TTS), a prospective field study was conducted at three worksites where workers are known to be exposed high level of noise. Subjects were selected according to answers on a questionnaire which inquired about otological history and previous noise exposure, including avocational, military and occupational exposures. After excluding employee with past otologic problems, recent exposure to high level noise, and under medications, total 92 employees participated in the study. Among 92 participants, complete consecutive audiometric examinations were carried out at 0∼2 hours, 5∼7 hours, 14∼16 hours after worktime noise exposure on 26 participants wearing hearing protectors and 22 participants wearing no protective devices. The difference between the hearing level 0∼2 hours after noise exposure and 5∼7 hours is statistically significant by paired t-test(p<0.01). The median recovery times calculated from the data of 22 participants wearing no protective hearing devices are 15.6 hours at 4000Hz, and 7.7 hours, 10.3 hours, 8.4 hours at 1000Hz, 2000Hz and 8000Hz respectively. These data suggest that when measuring the pure tone audiometry for noise exposed workers, at least 16 hours noise-free interval is required.

대기오염과 천식증상에 의한 응급실내원과의 연관성에 관한 환자교차연구

임형준,이상윤,윤기정,주영수,강대희,조수현 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : This study, using case-crossover design, search a relationship between changing levels of air pollutants and asthma attack in asthma patients. Methods : We searched the daily total number of asthmatic patients at hospital's emergency room in Seoul, Korea by investigating total 49 general hospital's emergency room records. Otherwise, We investigated medical records of asthmatic patients at one of the 49 hospitals we have searched. We investigated addresses that they are living, diagnosis, smoking history, whether respiratory infection or not, medications. We analyzed the data by 1:m conditional logistic regression used when matched case-control study is analyzed. Control periods were chosen by bidirectional paired matching technique 7, 14 days before and after case periods. Results : the relative risk of asthmatic attack by 100 ppm ozone increase between June and September were 1.348(95 % CI = 1.010∼1.619). Between November and February, the relative risk by 100 ㎍/㎥ TSP increase, 100ppb sulfur dioxide and nitrogen dioxide were respectively 1,278(1.010∼1.619), 1.237(1.019∼1.502), 1.285(1.006∼1.640). In stratified analysis, the relative risk were significant when the asthmatic patients were children aged 15 years or below, when there were respiratory infection, and when the patients took medications irregularly Conclusions : There was statistically significant association between ambient levels of air pollutants and asthmatic attack. So, we have to exert our efforts to minimize the air pollution effectively, to protect public health from air pollution.

면역 부전 환자에서 병발한 급성 황색 포도상 구균에 의한 세균성 식도염 1예

박환양,김춘관,박영배,박재완,김성훈,강정원,문경협,양수현,변종훈 대한감염학회 2001 감염 Vol.33 No.5

Bacterial esophagitis is an uncommon disease and has not been well characterized. Bacterial infection of the esophagus is usually presented as a superimposed infection upon a preexisting viral or fungal esophagitis and most patients are immunocompromised hosts. A 67-year-old man was admitted for retrosternal pain and hematemesis, who had a past history of long-standing diabetes mellitus and end stage renal disease, also had a history of steroid medication. Extensive esophageal ulcerations of the mucosa were visualized by endoscopy. Staphylococcus aureus grew in blood culture. After the 2 weeks of antibiotics treatment, he was successfully recovered without any sequelae. Due to its rarity, this case is herein reported with a review of the corresponding literature. (Korean J Infect Dis 33:360∼363, 2001)

우리나라 개인의 자산 선택 행위와 공적연금제도와의연관성에 관한 연구

김헌수 ( Hon Soo Kim ),김경아 ( Kyoung Gah Kim ) 한국재정학회 2014 재정학연구 Vol.7 No.3

본 연구에서는 연령효과와 세계금융위기 등의 요인이 개인의 자산선택에 미치는 영향과 공적연금 가입여부가 개인의 안전금융자산 보유에 미치는 영향 등에 대해 실증 분석하였다. 먼저 세계금융위기 등으로 인한 소득위험 증가가 개인의 안전자산에 대한 보유수준을 증가시킬 것으로 예상했으나, 통계적으로 유의미하지 않았다. 반면, 연령과 소득이 증가할수록 안전금융자산 수준이 증가하는 것으로 나타났다. 아울러 부동산자산과 안전금융자산 보유 간에 강한 부(-)의 관계가 나타난 것을 볼 때, 지나친 부동산자산 편중현상이 개인으로 하여금 단기간에 유동성을 확보하기 위한 수단으로 위험자산 보유에도 영향을 미치는 것으로 나타났다. 한편, 공적연금 가입여부와 안전금융자산 수준과의 관련성에 있어, 특수직역연금에 가입한 개인의 경우에는 자신의 노후소득이 안정적인 수준일 것이라고 예상될 경우 생애주기 동안 위험자산 보유액이 증가할 수 있다는 개연성이 있는 것으로 나타났다. 이는 개인의 다층적이고 안정적인 노후소득보장체계의 구축이 이루어질 경우, 주식시장 활성화라는 측면에도 긍정적인 영향을 줄 수 있음을 의미한다고 본다. In this study, the effects of the changes of aging and global financial crisis on individuals`` portfolio selection and the influences of the enrollment of public pension on possession of riskless financial assets were empirically analyzed. Although it was expected that an increase in income risk due to global financial crisis increases the level of individual possession of riskless assets, it was not statistically significant. However, it appeared that the ratio of riskless financial assets rises as the age and income increase. In case of individuals who enrolled in the special occupational pension plan, it was found that the ratio of riskless financial assets relatively decreases when the income growth rate is high. Considering the strong negative relation between real estate assets and riskless financial assets, it is considered that the excessive concentration on real estate assets influences on the individual possession of risk assets as a mean of securing the liquidity in a short term. In case of individuals who enrolled in the special occupational pension plan, meanwhile, it was found that the amount of risk assets may increase during the life cycle if they expect their old-age income will be stable. It can be considered that the individual construction of multi-layered and stable retirement income plans may indirectly revitalize and positively affect the stock market.

중,고령자의 은퇴리스크 추정을 위한 기초연구

김헌수 ( Hon Soo Kim ),석상훈 ( Sang Hun Seok ) 한국사회보장학회 2013 사회보장연구 Vol.29 No.2

본 연구는 은퇴 예정자들의 노후준비 정도를 지표화하기 위해 목표소득대체율과 예상 소득대체율을 보다 객관적이고 체계적인 방법으로 측정하였다. 측정결과에 의하면, 목표소득대체율은 약 75% 수준이나 예상소득대체율은 약 57%∼64%로 우리나라 중·고 령자의 은퇴 준비정도는 매우 미흡하다는 사실을 확인하였다. 추정된 목표소득대체율은 생애주기가설에 입각한 소비의 평활화(consumption smoothing) 관점에서 벗어나 은퇴 전후 소비수준의 하락현상을 고려하여 분석한 결과, 기존 연구의 결과들과 큰 차이가 없었으나 예상소득대체율은 국민연금 가입여부에 따라 차이가 발생하였다. 이러한 분석결과는 국민연금이 은퇴 후 노후소득에서 차지하는 비중이 적지 않다는 점과 향후 국민연금의 소득대체율이 점진적으로 하락하는 상황에서 공사적연금간 상호보완적인 다층적 노후소득보장쳬계의 구축이 시급하다는 점을 시사한다. To measuring the level of readiness of retirement life of pre-retirees, this study has focused on the method to estimate a targeted replacement rate and an expected replacement rate with more subjective and systematic way. Our findings are as follows: First, the readiness of retirement life of the middle and old age in Korea is not enough to pursue normal and stable retirement life. We estimated 74.5 of the targeted replacement rate of salary household and around 57∼64% of the expected replacement rate. Second, in the case of the targeted replacement rate, we considered the phenomenon that the consumption level before and after retirement could be substantial instead of taking the consumption smoothing hypothesis based on the life time utility maximization. Our results were not different with the results of the previous research. Third, the expected replacement rate is a little bit sensitive on whether an individual enrolls in the National Pension. It implies that many retirees may largely rely their retirement income on the National Pension benefits for retirement income and we need to build multi-level retirement income system as soon as possible under the circumstance of gradual decline of replacement rate of public pension.

폐 침윤을 동반한 특발성 과호산구 증후군 1례

류헌모,권영수,정진홍,이관호,이현우,김동석,이삼범 영남대학교의과대학 1994 Yeungnam University Journal of Medicine Vol.11 No.2

저자들은 말초 혈액에서 현저한 호산구 증가를 보이면서 간, 임파선, 골수 및 폐에 호산구 침윤을 보여 hydroxyurea로 치료한 특발성 과호산구 증후군 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. The idiopathic hyperecoinophilic syndrome consists of peripheral blood eosinophilia of 1500/㎣ or more without a known cause, plus signs and symptoms of organ eosinophilia. The prognosis of HES without treatment is poor. However, about one third of the patients with this syndrome may respond to corticosteroid thrapy. Morever, the majority of the remainder may have a favorable response to hydroxyurea. We present here a case of hypereosinophilic syndrome without any identifiable causes, involving bone marrow, liver, lungs and cervical lymph node. We tried corticosteroid as a treatment but it showed on response. However the hydroxyurea showed good response.

Fifteen Years After the Gozan-Dong Glass Fiber Outbreak, Incheon in 1995

Cho, Soo-Hun,Sung, Joo-Hon,Kim, Jong-Hoon,Ju, Young-Su,Han, Min-Ji,Jung, Kyu-Won The Korean Society for Preventive Medicine 2011 Journal of Preventive Medicine and Public Health Vol.44 No.4

Objectives: In 1995, an outbreak survey in Gozan-dong concluded that an association between fiberglass exposure in drinking water and cancer outbreak cannot be established. This study follows the subjects from a study in 1995 using a data linkage method to examine whether an association existed. The authors will address the potential benefits and methodological issues following outbreak surveys using data linkage, particularly when informed consent is absent. Methods: This is a follow-up study of 697 (30 exposed) individuals out of the original 888 (31 exposed) participants (78.5%) from 1995 to 2007 assessing the cancer outcomes and deaths of these individuals. The National Cancer Registry (KNCR) and death certificate data were linked using the ID numbers of the participants. The standardized incidence ratio (SIR) and standardized mortality ratio (SMR) from cancers were calculated by the KNCR. Results: The SIR values for all cancer or gastrointestinal cancer (GI) occurrences were the lowest in the exposed group (SIR, 0.73; 95% CI, 0.10 to 5.21; 0.00 for GI), while the two control groups (control 1: external, control 2: internal) showed slight increases in their SIR values (SIR, 1.18 and 1.27 for all cancers; 1.62 and 1.46 for GI). All lacked statistical significance. All-cause mortality levels for the three groups showed the same pattern (SMR 0.37, 1.29, and 1.11). Conclusions: This study did not refute a finding of non-association with a 13-year follow-up. Considering that many outbreak surveys are associated with a small sample size and a cross-sectional design, follow-up studies that utilize data linkage should become standard procedure.

비구를 침범한 원발성 골종양

윤여헌 ( Yeo Hon Yun ),박병문 ( Byeong Mun Park ),한대용 ( Dae Yong Han ),한수봉 ( Soo Bong Hahn ),신규호 ( Kyoo Ho Shin ),문석주 ( Seok Joo Moon ) 대한고관절학회 1991 Hip and Pelvis Vol.3 No.1

We reviewed fifteen cases of primary bone tumor which involved the periacetabular region. Histologically confirmed diagnosis of the tumors included four osteosarcomas. four chondroblastomas. three eosinophilic granulomas, two aneurysmal bone cysts and two osteochondromas. The tumors could be characterized by their sites of involvement: the majority of benign lesions occurred at the superior or superomedial aspect of the acetabulum and grow out mainly toward the body of ilium, while the malignant tumors generally involved the ischiopubic region and extended to the anteromedial or inferior acetabulum. The results of treatment for the benign lesions were satisfactory after intralesional curettage or marginal resection. but for the malignant tumors the diagnosis were frequently delayed and their prognosis were poor.

중소기업 컨설팅 지원사업의 실효성에 관한 연구: 대전지역 히든챔피언 지원 사업을 중심으로

고혜수 ( Hye Soo Ko ),장양헌 ( Yang Hon Chung ),서한결 ( Hang Yeol Seo ),송락경 ( Lak Kyung Song ) 한국중소기업학회 2016 中小企業硏究 Vol.38 No.1

본 연구의 목적은 정부의 컨설팅 지원 사업이 중소기업의 경영성과에 미친 영향을 규명하는 것이다. 이에 따라 대전지역 중소기업 지원 정책 사업을 대상으로 경영성과를 수익·성장·안정·활동성 측면의 재무성과로 구분하여 지원의 효과를 확인하였다. 아울러 중소기업이 속한 산업, 기업 규모 및 R&D 규모가 경영성과에 영향을 미치는 내생변수라는 점을 고려하여 PSM-DID 정책평가 연구모델을 기반으로 경영성과의 변화를 측정하였다. 본 연구의 결과에 따르면 컨설팅 지원은 수익성과 성장성 측면에서의 효과에서 유의미한 차이를 나타냈으며, 정책 지원 대상이 된 기업은 기존 선정 기준과 유사한 조건의 비 수혜기업에 비하여 수익성과 활동성 측면에서 특징적인 우위를 가지는 것을 확인하였다. 본 연구의 분석 결과는 정책의 수혜 대상인 중소기업뿐 아니라 사업을 주관하고 있는 정부에게도 컨설팅 지원이 재무성과 향상을 위한 전략적 지원으로 적용될 수 있다는 시사점을 제공한다. The study focuses on the effect of the consultant support program of the government on the management performance of the SME. Accordingly, the author identified the SME consultant support program in Daejeon city and analyzed the effect on the management performance by subdividing the financial performance into aspect of profitability, growth, stability, and activeness. Also, while considering that the industry which SME belongs, business scale and the R&D scale is endogenous to the management performance, the author adopted PSM-DID policy assessment model to estimate the variation in the management performance. The analysis showed significant effect of the consultant support on profitability and growth of the SME. The result further checked that selected recipient for the government support have distinguishable leverage over the companies with similar qualifications on profitability and activeness of the firm. These analysis result can be utilized as a valuable strategic asset not only for the SME beneficiaries but also for the government who implements the consultant policy.

커뮤니티 컴퓨팅 솔루션을 활용한 지능적 유비쿼터스 홈 구축

유성훈(Soung-Hon You),박희정(Hui-Jung Park),김현숙(Hyun-Suk Kim),신진아(Jin-A Shin),박정욱(Jung-Uk Park),변유인(U-In Byun),김태수(Tae-Soo Kim),이건우(Gun-U Lee),조위덕(We-Duk Cho) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7

The main goal of Ubiquitous computing is that providing innovated service to user and new computing methodology is required to achieve this goal. The CUS (Center for Ubiquitous System Research Lab) has developed new computing paradigm which is called Community Computing (CC). In this paper, we describe CC briefly and explain how this new paradigm applies to home environment.