1, 2 차원 수치해석에 따른 기존 세굴심 산정식 편차 산정

최한규,박태현,이영섭 江原大學校 産業技術硏究所 2008 産業技術硏究 Vol.28 No.B

This study tried the 1st, 2nd dimensional numerical analysis according to the pier's shape, size and installing method in order to compare the depth of scour calculation method using the variables calculated by using the 2nd dimensional numerical analysis with the calculated depth of scour value by using the calculated variables by using the 1st dimensional numerical analysis. And then verified the problems occurring when the depth of scour is calculated by using the calculated values by using the 1st dimensional numerical analysis, as calculating the deviation depending on it.

방진마스크의 Stainless steel arc 용접흄 여과효율에 관한 연구

송경석,권용식,한규태,정규혁,이용묵,유일재 한국산업위생학회 2001 한국산업보건학회지 Vol.11 No.1

The purpose of this study was to investigate for filtration efficiency of several dust masks, comparing with filtration efficiency certified by KOSHA(Korea Occupational Safety & Health Agency), and to require of the right use of protective respirator. Using a welding fume generator and chamber, several dust masks, which were widely used in the workplaces in korea, were tested for their filtering efficiency for stainless steel are welding fume. The filtration efficiency testing system consisted of a welding fume generator, a chamber and a filtration unit. The filtration unit was made of a mask which was inserted into the sampling cassette and another sampling cassette, which contained mixed cellulose ester filter paper. These two cassettes were connected with tubing. Stainless steel arc welding fume generator was delivered into an chamber. The welding fume in the chamber was passed into the filtration unit with flow rate of 30 liter/min. The welding fume filtration efficiency was evaluated by gravimetric measurement. Metal concentrations in the welding fume before and after filtration were measured with inductive coupling plasma analyzer. Following results were obtained: Filtration efficiency of welding fume for comm hygienic mas was 63.82% and the average efficiencies for A, B, C, D, E, F and G masks were 94.62% 96.58%, 83.20%, 82.76%, 77.25%, 86.55% and 93.22%, respectively. Our results indicate that dust masks used widely in the welding workplaces in korea are not proper for protecting worker's health and then the use of fume mask should be required.

정신분열증 환자의 신체증상과 인구통계학적, 임상인자들과의 관련성

윤정흠,김선경,전현태,이귀행 원광대학교 의과학연구소 2009 圓光醫科學 Vol.24 No.1

배경 : 이 연구의 목적은 정신분열병 환자의 신체증상과 인구통계학적, 임상인자들과의 관련성을 알아보기 위함이다. 방법 : 연구 대상군은 입원중인 63명의 정신분열병 환자를 대상으로 하였다. 신체 증상의 정도는 한국어판 신체증상목록을 사용하여 측정하였다. SPSS 11.5를 이용하여 신체증상의 정도와 우울, 불안, 교육정도, 적응상태와의 관계를 피어슨 상관분석을 통하여 평가하였다. 결과 : 1) 신체증상의 정도는 교육기간과 입원 당시의 적응 상태와는 부적 상관을 보였다(p<0.05). 2) 신체증상의 정도는 우울, 불안과는 정적 상관을 보였다(p<0.05). 3) 정신분열병 환자의 신체 증상의 빈도는 다음 순이었다: 두통, 피로, 수면장애, 건강염려, 현기증, 오심, 위장장애, 근력 약화, 허리나 등의 통증, 복부의 가스. 결론 : 정신분열병의 신체증상의 정도는 교육기간이 길고 입원 당시의 적응상태가 좋을수록 감소하였다. 그리고 신체 증상은 우울, 불안의 증상이 심할수록 증가하였고, 이는 특히 신체증상이 우울, 불안과 관련이 있다는 것을 알 수 있었다. Background : The purpose of this study was to examine the correlation between somatic symptoms and demographic and clinical variables in schizophrenia patients. Methods : The subject were 63 schizophrenia patients ; male(n=35, mean age =39), female(n=28, mean=age 40). The degree of somatic symptoms was measured using the Korean versions of Wahler Physical Symptom Inventory(WPSI). The relationship among somatic symptoms, anxiety, depression, education period and adjustment was evaluated by Pearson correlation with SPSS 11.5. Results : 1) The degree of somatic symptoms showed negative correlation with education period and current adjustment at admission(p<0.05). 2) The degree of somatic symptoms was significantly correlated with degree of the depression and the anxiety(p<0.05). 3) The frequent somatic symptoms were as follows in order : headaches, feeling tired, difficulty sleeping, poor health in general, dizzy spells, nausea, intestinal or stomach trouble, muscular weakness, backaches and excessive gas. Conclusion : The somatic symptoms of schizophrenia were decreased in the group of the long education period and the good current adjustment at admission. The more depression and anxiety were increased, the more somatic symptoms were revealed. It suggests that somatic symptoms of schizophrenia may be related to depression and anxiety.

Measurement of Human Joints based on Korean Cadaver CT Image and Concept Design of Drug Delivery Device

Tae-Min BYUN,Cheol-Woong KO,Sang-Kuy HAN,Keyoung-Jin CHUN,In-Hoon JANG 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.11

무선 LAN의 채널 상태에 따른 가변성을 보유한 ARQ 방식의 적용에 관한 연구

태원귀,김정호 大田産業大學校 1998 한밭대학교 논문집 Vol.15 No.1

When data transferred through communicatior line, error of transmission data often occurred by sudden power off, frequency confusion noise, reduce, and so on. Then, receiver need to the method that the error detection of received data and retransmission. In nonstationary channels, error rates very considerably. But, stationary channels error control and retransmission method is not compatible in nonstationary channels. This study propose the effective Go back N ARQ scheme, a three-state transmission method, which simply estimates the channel state(L, H, VH error state) based on the acknowledgement message received and variability switches the three operation mode corresponding to channel state. If the channel is in Low error rate(L-channel), the transmitter follows the basic GBN procedure, and in state High error rate(H-channel), transmitter follows an n-copy transmission mode, and in state Very High(VH-channel), transmitter follows the Moneclaey/Bruneel transmission mode. The proposed method is verified and estimated that it can provide higher throughput than other comparable ARQ schemes under a wide variety of error rate condition.

정신병적 우울증

도규영,한진희,유태열 한국의학사 1991 診斷과治療 Vol.11 No.9

한국인 사체 CT 영상에 기초한 대퇴골 골절치료용 금속판의 Concept Design

변태민(Tae-Min Byun),허신구(Shin-Goo Hur),황창윤(Chang-Yun Hwang),김남구(Nam-Gu Kim),강승백(Seung-Baek Kang),한상규(Sang-Kuy Han),고철웅(Cheol-Woong Ko) 한국산학기술학회 2014 한국산학기술학회 학술대회 Vol.- No.-

본 연구에서는 대퇴골 골절치료용 금속판 개발을 위하여 한국인 사체의CT 영상을 기초로 대퇴골 형상모델을 재구성하였으며, 형상계측학적 측정을 위하여 대퇴골 측정기준을 설정하였다. 특히, 대퇴골 Isthmus 기준위치를 설정하기 위하여 골수강의 단면형상을 측정하였고, 기준위치로부터 5mm 간격으 로 단면측정을 진행하였다. 한국인 대퇴골 간부 형상에 맞는 대퇴골절치료용 금속판의 Concept Design을 제안하였으며, 이를 기초로 향후 형상기억합금을 이용한 금속판 개발을 검토 예정이다.

점형동에 발생한 단일골성형 섬유성 이형성증 1례

송규태,김성완,정우찬,김광일 대한이비인후과학회 1997 대한이비인후과학회지 두경부외과학 Vol.40 No.10

THE INVESTIGATION FOR THE EFFECT OF THE SOLUBILITY PARAMETER BETWEEN OIL BINDER AND SOLVENT TO THE PRODUCT QUALITY IN THE WET TYPE BACK INJECTION PRESS PROCESS.

( Y Tae -young ),( K Jong-kuy ),( L Joo-wan ) 대한화장품학회 1998 대한화장품학회지 Vol.24 No.3

In the make-up product, Eye-shadow products have several purposes of enhancing product quality such as providing the beauty (variation of shape, clean appearance), feeling, continuity and adhesion. In this paper, newly developed wet type back injection press process is introduced so as to increase higher value products which providing various the beauty. The solvent takes an essential role to provide the fluidity of the powder bulk during the pressed- process of wet type pressed product. In this study, the effect of solvent in the oil binder was investigated. And the higher quality condition of the wet type pressed product was built to apply cosmetic preparation. Firstly, the system was designed powder phase as non treated pigment. The oil binder phase is categorized as hydrocarbons( Mineral oil, Squalane), Silicones(Methicone, Dimethicone ), esters (Octyldodecanol, Octyl Dodecyl Myristate). The solvent phase used was C 7-8 isoparaffin and Isopropyl Alcohol. The interaction of oil binder and solvent is investigated by measuring mass of final oil binder and the each solubility parameter. It was found that the higher the solubility the higher the degree of change in the final composition of the oil binder. In order to maintain the quality of the final product, the solvent used in pressed- process should be hydrophobic with oil binder.

An Operating System Design and Development for Efficient Painting Process

Chung, Kuy-Hoon,Baek, Tae-Hyun,Park, Ju-Chull,Cho, Kyu-Kab 한국경영과학회 2000 한국경영과학회 학술대회논문집 Vol.- No.1

In this study we design a scheduling system for painting shop, called HYPOS(HYundai heavy industry Painting shop Operating System) and develop a system implementing the design. The painting shop operations are currently scheduled manually by experts. Manual scheduling is a serious time consuming job and generally can not guarantee a full optimality. Building a traditional heuristic scheduling system for this problem, however, is not promising because there are various kinds of constraints to be satisfied including space al1ocation of shipbuilding blocks in a painting cell. We, therefore, adopt a spatial scheduling approach and develop scheduling algorithms based on field-opiented scheduling heuristics and computational geometry. And we show that the algorithms can successfully be applied to the painting shop scheduling problem.