부산·울산·경남지역 직업병 감시체계

김정일,김병권,김정원,채창호,이철호,강동묵,김지홍,김진하,김영욱,이영하,이지호,김정호,윤형렬,유철인,정백근,장태원,김운규,윤동영,강진욱,김종은,안진홍,이동준,장준호,이광영,송혜란,최영희,이용환,조병만,최홍렬,고상백,김은아,이유진,홍영습,정갑열,김정만,김준연 大韓産業醫學會 2004 대한직업환경의학회지 Vol.16 No.1

Objective: Occupational medicine specialists in the Busan, Ulsan and Kyung-Nam areas established an area-based occupational disease surveillance system and used this system to collected case information for the purpose of preventing occupational diseases Methods: l l hospital participated in this system. The authors selected five main diseases, which were hand-arm vibration syndrome (HAVS), work-related musculoskeletal disorder (WRMSD), occupational asthma, occupational skin disease and occupational and occupational lung cancer and established their case definitions. All cases were reported on the web, and real time analysis was conducted. Results: Between April 2001 and April 2003, 192 cases of HAVS, 118 cases of WRMSD, 33 cases of occupational asthma, 17 cases of occupational skin disease and 17 cases of occupational lung cancer (for a total of 377 cases of these five main diseases) were reported. most of the HAVS cases came from shipbuilding, and 172 of them (92.7%) were associated with grinding. Of the four main types of WRMSD, carpal tunnel syndrome (CTS) was the most prevalent with 46 cases and shipbuilding was also the main industry involved (83.9%). The ergonomic risk factors involved mainly associated with the hand. In 19 (57.6%) and 4 (12.1%) cases of occupational asthma, the agents involved. The causative agents of occupational lung cancer included Cr, welding fume, PAH, Ni, etc. 10(58.8%) of the cases were diagnosed as squamous cell carcinoma and 5(29.4%) as adenoma. Conclusion: This result showed that an area-based occupational disease surveillance system might provide an effective method of evaluating the prevalence of such diseases, however the Busan, Ulsan and Kyung-Nam provinces are too large to be treated as individual areas. Therefore, the authors suggest that each province should establish its own surveillance system.

원통 연삭에서 가공 능률 향상을 위한 연삭 저항의 측정에 관한 연구

김원일,이진,이윤경,왕덕현,이상복,이관철,문원길 경남대학교 공업기술연구소 2000 硏究論文集 Vol.18 No.-

본 연구에서는 원통 연삭 가공에서 가공 능률 향상을 위한 연삭 저항을 측정하고자 연삭 가공 중에 발생하는 연삭 저항의 추이를 확인하였고 다음과 같은 결과를 얻었다. 숫돌과 공작물간의 연삭 강성은 공작 속도의 증가에 따라 지지계의 강성이 높은 경우 증가하였고 절삭 깊이와 연삭 숫돌의 속도에는 연삭 강성이 감소하는 경향을 보였다. 또한 총합 강성은 공작 속도, 절삭 깊이 및 연삭 숫돌의 속도 증가에 따라 지지계의 강성이 높을 수록 증가하였다. 연삭기의 강성 변형과 가공 능률에 영향을 주는 값으로 연삭 강성비는 지지계의 강성이 높을 수록 감소하였다. In this study, the measurement of grinding resistance to improve grinding efficiency in cylindrical grinding was studied and the following conclusions could be obtained. Relation grinding wheel and workpiece, grinding stiffness increases according to increase of work speed for high machine stiffness and decreases depth of cut and grinding wheel speed. Also, resultant stiffness increases high machine stiffness according to increase work speed, depth of cut and grinding wheel speed. The values of the effect stiffness deflection in grinding machine, grinding stiffness ratio decrease according to high machine stiffness.

Nd₂O₃가 첨가된 반도성 BaTiO₃자기의 PTCR효과

이형복,이경희,정윤중,박철용 明知大學校 産業技術硏究所 1989 産業技術硏究所論文集 Vol.8 No.-

The room temperature resistivity was minimum value at Nd₂O₃ 0.15 mol% in Nd₂O₃doped BaTiO₃ ceramics. Grain sizes were decreased abruptly with Nd₂O₃ doping amount and the size demonstrated minium of 0.7∼1㎛ at Nd₂O₃ 0.2mol% doped. But the room temperature resistivity and grains size were increased again with increase amount of Nd₂O₃ doping amount. With impurity Al₂O₃ or without Al₂O₃, the above behaviors were similar according to the amount of Nd₂O₃ but the room temperature resistivity was a little decreased when added with Al₂O₃. When ?? was added as a counter dopant, the room temperature resistivity was minimum at 0.09 mol% addition and that time the resistivity anomaly effect was about 4 order.

길쌈부호의 부등비트오율이 고려된 DPCM의 신호대 잡음비

李相坤,崔閏喆,文相在 慶北大學校 1990 論文集 Vol.49 No.-

This paper presents that the signal to noise ratio of DPCM is theoretically examined in the case that bit error rates of individual bits consisting of the information word are different from one another. It is investigated through the computer simulation where the inputs are speech signal. The SNR performance of DPCM can be improved by using the property of the unequal bit error probabliity.

군 훈련병의 스트레스, 성인 주의력결핍 과잉행동장애 증상과 자살사고의 연관성에 관한 연구

이동윤,이철순,박철수,손진욱,김봉조,차보석,이소진 대한생물치료정신의학회 2011 생물치료정신의학 Vol.17 No.2

Objectives:This study is conducted to investigate the effect of Attention Deficit and Hyperactivity Disorder(ADHD) symptoms on stress and suicide idea among 224 conscripts. Methods:Total number of subject is 224 conscripts. We evaluate symptoms of adult ADHD with Korean-Wender Utah rating scale(K-WURS) and Korean adult attention-deficit/hyperactivity disorder scale(K-AADHDS), stress with Brief Encounter Psychosocial Instrument-K(BEPSI-K), suicide idea with Scale for suicide ideation(SSI) after basic military training. Multivariate logistic analysis with backward stepwise selection is performed to evaluate risk factors of stress. Multiple linear regression analysis with stepwise selection is performed to evaluate association of suicide idea with adult ADHD symptoms. Results:Stress is significantly associated with K-WURS score, K-AADHDS score and SSI score(p<0.01, p<0.05, p<0.01). K-WURS score are significant risk factor of stress after basic military training(p<0.05, O.R : 1.034, 95% CI : 1.005-1.065). And K-WURS score influence suicide idea after basic military training(p<0.05, β : 0.031). Conclusion:The result suggests that K-WURS score might be a risk factor of stress and could affect suicide idea.

NATM 산악터널의 숏크리트 투입율에 관한 연구

이철주,김성윤,김동건,유남재 江原大學校 産業技術硏究所 2009 産業技術硏究 Vol.29 No.B

This study has analysed actual overbreak, shotcrete rebound and the ratio between the actual quantity of shotcrete to designed shotcrete measured during a NATM tunnel construction. The measured shotcrete rebound was about 7.2% in average which was about half the allowable rebound (15%), showing shotcrete spraying was performed well. Based on the measurement of excavated tunnel shape, average overbreak was about 28.5 cm after tunnel excavation by drill and blasting method. This was about 260% of allowable overbreak. In addition, due to the rebound and overbreak actual amount of shotcrete used in the tunnelling work was about 116.5 % of the designed value. According to the field measurement the ratio of actual shotcrete to designed value showed some relation with standard support pattern, but the size of overbreak did not show the correlation with standard support pattern. Hence current design specifications stating the size of overbreak based entirely on standard support pattern should perhaps be reestablished. The insight into the design guideline regarding overbreak and shotcrete

한국 유통산업의 환경변화와 전략적 변신

이윤철 한국항공대학교 경영연구소 1999 경영연구 Vol.6 No.1

This paper suggests the strategic transformation to enhance the competences of Korean distribution firms. Three environmental changes were described to explain the current situation of Korean distribution industry. These were globalization, information technology and chunges of costumer preference. Furthermore, the cases of strategic transformation were collected to show the overall trends of distribution industry. Strategic transformations of distribution firms were aimed to achieve economy of sale, specialization and localization. Finally, strategic alliance was suggested to enforce the competitiveness o f distribution firms.

난포기 및 황체기에 있어서 돼지 난관 협부 평활근의 neurotransmitter들의 수축효과에 대한 estradiol-17β및 progesterone의 영향

이민기,노규진,심철수,남윤정,김주현,최상용 慶尙大學校 1991 論文集 Vol.30 No.2

The effects of estradiol-17β or progesterone on the contractility of neurotransmitters on pig oviductal isthmic smooth muscle were investigated. The motility of the isolated smooth muscle was recorded by using physiological recording system. The results were summarized as follows : 1. The contractility induced by histamine or prostaglandin F2α was depressed by the pretreatment of estradiol-17β but was not by the preteatment of progesterone in follicular or luteal stage. 2. The contractility induced by acetylcholine was depressed un follicular stage but excited in luteal stage by the pretreatment of estradiol-17β or progesterone. 3. The contractility induced by norepinephrine was depressed by the pretreatment of progesterone in follicular stage but was excited by the pretreatment estradiol-17β in luteal stage.

몇가지 植物의 棲息地 造成에 關한 硏究

윤종선,김익환,신세균,심우경,이철희,신영철 韓國植物ㆍ人間ㆍ環境學會 1999 인간식물환경학회지 Vol.2 No.2

종의 棲息密度가 낮아지고 있는 하늘나리, 섬초롱, 자란 3종의 식물을 인위적으로 棲息地를 造成하기 위하여 국립공원 속리산 등산로변 標高 200m, 400m, 600m 지점에 150주식 종당 450주를 조직배양 및 분주에 의하여 육묘 된 묘를 이식하여 생존상태 및 棲息地 造成의 가능성을 2년에 걸쳐 검토한 결과는 다음과 같다. 1. 造成 棲息地의 토양의 理化學的 造成은 pH 5.2∼5.6, 유기물 함량 29∼54g/㎏, CEC 9.4∼11.5㎝ mol(+)/㎏으로 산성을 띠고 있었으며, 유기물 함량은 높은 편이었고, 염기치환용량은 낮았으나 비교적 우리나라 典型的 山地土壤의 理化學的 造成과 유사하였다. 2. 棲息地內 생장기간의 投光率은 標高 200m 지역은 10.8∼11.6%, 400m lw역은 10.8∼11.4%, 600m 지역은 11.0∼12.8%로 식재식물의 生長環境에 부족한 상태였다. 3. 식재 식물 수는 식재 후 활착율은 3종 모두 양호하였으나, 점차 감소되었으며, 특히 자란의 감소율이 높았다. 감소의 원인을 분석한 결과 하늘나리, 섬초롱, 자란 모두 굴취나 절취의 피해가 많았으며, 특히 자란은 凍害에 의한 枯死가 1년차 72∼86주, 2년 차에서 19∼35주로 조사도어 자연상태에서의 越冬은 어려운 것으로 나타났으며, 집중호우에 의한 流失도 감소의 한 원인이었다. 4. 식재식물의 생장상태는 불량하였는데 이는 投光量 부족으로 판단되어 棲息地造成時에는 錄陰期 投光量에 대한 사전 검토가 중요한 요인으로 나타났다. 5. 개화율은 섬초롱과 자란에서 높았으며 標高가 높을수록 개화기는 2∼4일 늦어지고 휴면기는 빨라지는 경향이었다. 식물 棲息地 造成時에는 造成 식물의 생장에 적합한 토양, 光環境 등을 고려한 위치 선정이 중요하며, 上層林에 의한 遮光으로 下層 초본식물 遷移速度가 빨라짐으로써 光環境 개선을 위한 上層林의 間伐, 周邊樹種의 更新이 요구된다. In order to make the artificial habitats of Lillium concolor, Campanula takesimana and Bletilla striata that the number of plant became sparse, 150 plants per species were transplanted at the region of 200m, 400m and 600m above sea level. And the growth of plants and the potential as habitats creation were analyzed. In the physical and chemical properties of soils in the there, soil pH was 5.2 to 5.6, organic matter content was 29 to 54g/㎏ and cation exchange capacity(CEC) was 9.4 to 11.5㎝ mol(+)/㎏. The transmittance rates of sunlight of the habitats during the growing periods were 10.8 to 11.6% in the 200m region, 10.8 to 11.4% in the 400m region and 11.0 to 12.8% in the 600m region. These transmittance rates were deficient for normal growth of plants. After the plants were transplanted, the survival rates of three species were high in common but the rates decreased gradually. Especially the decrease rate was high in the Bletilla striata. The causes of decrease were digging and cutting by climbers, sweeping asay by rainfall and freezing damage. Especially, the cold tolerance of Bletilla striata was weak in the natural condition. The growth of planted plants was poor, and it was assumed that the reason was shortage of sunlight transmittance. The flowering rates were high in the Campanula takesimana and Bletilla striata. And as the elevations were high, the flowering was later by 2 to 5 days but the dormancy was earlier. In the artificial making of plant habitats, the growth environment of plants have to be considered to choose the suitable region. And, because the habitats are shaded by the trees and bushes, the thinning of trees and the change of species are needs to improve the light transmission.

小型船舶 登錄制度에 관한 比較法的 考察

李潤哲,金鎭權 한국해법학회 2005 韓國海法學會誌 Vol.27 No.1

현재 우리나라는 선박에 대한 공시제도로 등기등록 이원주의를 채택하고 있으나, 총톤수 20톤 미만의 선박에 대해서는 행정상의 목적으로 선적증서교부제도만을 규정하고 있다. 그러나 소득수준의 향상과 주 5일제 근무제 시행 등에 따라 해양레저활동이 활성화되고 총톤수 20톤 미만의 레저용 보트의 개발 및 이용이 확대되어 가고 있으므로 소형선박에 대한 해사행정상의 등록은 물론 재산적 보호를 위한 권리관계를 공시할 수 방안이 강구되어야 할 것이다. 또한 최근 소형선박들이 해양에 무단으로 방치되어 선박항행의 안전을 방해할 뿐만 아니라, 해양오염을 야기시키고 있으므로 실질적인 소유관계를 명확히 하여 선박의 불법투기에 대한 관리 감독이 제대로 이루어지도록 하여야 할 것이다. 이에 본 연구는 소형선박 등록제도를 도입함으로써 소형선박에 대한 해사행정업무상의 선박운항의 요건 및 권리관계의 득실변경의 대항요건으로서의 효력을 부여하고, 개인의 재산권 보호라는 목적을 달성하기 위한 방편으로 주요 해운선진국, 특히 일본과 영국에서 시행하고 있는 소형 선박 등록제도에 관하여 살펴보고, 이를 우리나라 규정과 비교?검토하고자 한다. At present, policies and regulations regarding small vessels of less than 20 gross tonnage defined in the Ship Act and leisure boats excluded from the Water Leisure Safety Act, etc. still remain as unpresented within the legal framework. Since registration and inspection for these small vessels and leisure boats are not conducted properly, there were no grounds in exercising property rights or ownership including finance and insurance. In addition, it is hard to analyze actual condition such as statistics and to ensure vessel's seaworthiness due to no safety inspection. Moreover, the registration and inspection system for small vessels and small leisure boats, which are being more expensive, must be introduced as soon as possible. Therefore, this paper investigates the small vessel registration system of mane advanced countries such as the UK and Japan and compares with the ROK's rules and regulations.