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추이적 행렬을 이용한 패트리 넷의 교착 상태 확인 분석
이종봉,김병규,김종욱,이종근 國立 昌原大學校 產業技術硏究院 2004 産技硏論文集 Vol.18 No.-
본 연구에서는 패트리 넷에서의 교착 상태 확인을 추이적 행렬을 이용하여 분석하는 기법을 제안한다. 교착 상태란 패트리 넷에서 마킹이 더 이상 진행되지 못하고 서로 점화 가능 상태를 기다리는 상태로 자원 공유의 문제에서 많이 발생 가능하다. 따라서, 모든 플레이스와 트랜지션과의 관계를 나타내는 추이적 행렬을 이용하여 간단하게 확인분석이 용이한 기법을 제안한다.
야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로
조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6
Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.
이창엽,조평곤,김지닐,최소영,김창균,최종학,김정민,김유현 高麗大學校 倂設 保健大學 保健科學硏究所 2002 保健科學論集 Vol.28 No.2
To find elements which enable improving Quality of image of chest radiography, we attempted to make comparison between chest radiography used currently with that of the past, and following conclusion was reached: 1) It could be confirmed that a dependance on chest radiography was declining, because proportion of chest radiography against overall radiography decreased. 2) There was a change of kVp to a high voltage in a chest radiography, and use of high kVp became a generalization 3) Exposure time was reduced and exposure dose was curtailed accordingly. 4) Apparatus was mainly comprised of 3-phase rectifier circuit and inverter type. 5) It could be confirmed that frequency of applying additional filters for high kVp radiography was insufficient. 6) There was almost no difference in the condition of exposure between hospitals using film/screen and hospitals using CR. But when CR is used for radiography, it was increase in exposure dose due to increase in tube current and it will be necessary to have continuous study on exposure dose by an increase use of CR in the future.
이재익,윤일국,이종선,김종완,장준,안정기,송민호,정현용,이헌영,김삼용,김영건 충남대학교 암연구소 1991 癌共同硏究所 硏究誌 Vol.1 No.1
We performed a variety of lymphocyte stimulation tests, delayed hypersensitivity skin tests, and enumeration of several lymphocyte subpopulations in 21 patients with gastric cancer who did not receive any form of anticancer therapy, and in 20 healthy controls. The gastric cancer patients had significantly decreased number and total score of positive reactions in delayed hypersensitivity skin tests compared with the healthy controls. The percent of CD_(4) positive lymphocytes in the gastric cancer patients was significantly decreased compared to the normal control subjects, but it had no correlation with the total score of delayed cutaneous hypersensitivity reactions. The ratio of helper to suppressor cells was lower in the cancer group. The uptake of 3H-thymidine was markedly depressed in cancer patients when stimulated with various mitogens. There was little correlation between any of the stimulation tests and any of the lymphocyte subpopulation proportions to delayed hypersensitivity cutaneous reactions. Optimal proliferative response was found in lymphocytes stimulated with 10 micrograms of concanavalin-A and 10 microgram of phytohemagglutinin. Advanced stage patients had greatly depressed delayed hypersensitivity skin reactions and proliferative responses to mitogens compared with localized diseases. These results suggest that gastric cancer patients have depressed cellular immune functions, which mainly result from the decreased helper cells and defects in functional proliferative response to mitogens. Interleukin-2 and interferon-gamma restored the in vitro proliferative response of lymphocyte in patients with gastric cancer.
김만중,김만우,채종구,정춘해,홍순표,조건국 朝鮮大學校 附設 醫學硏究所 1987 The Medical Journal of Chosun University Vol.12 No.1
A Clinical observation was made in 52 cases of patients with esophageal cancer at Chosun University Hospital during about 5years from january 1981 until may 1986. The following results were obtained: 1. The peak age of patients was fifth decade. The average age of patients is 55.7 years old. The sex ratio is 7.6 : 1 with a greater prevalence male. 2. Duration of the disease before admission was relatively long, about 4~6 months is 48% of all case. 3. The most common initial symptoms were swallowing difficulty, weight loss, substernal pain. 4. On the majority of patients, Heavy s.noking was manifested. 5. In blood type, A type was predominent. 6. In location of tumor, 69.2% of total cases were located in mid esophagus. 7. In histopathologic finding, 73% of total cases was squamous cell ca.
3-isoamyl-ethyl-amino-6-methyl-7-anilino fluoran(S-205)의 열 변색 현상에 관한 열역학적 연구
김명건,허영덕,김종규 단국대학교 1999 論文集 Vol.34 No.-
Absorption spetra of thermochromic of 3-isoamylethyl-amino-6-methyl-7-anilino fluoran(S-205) was investigated. The S-205 exists as a colorless lactone in aprotic solvents. However, the S-205 exists in the form of an equilibrium mixture of a colored zwitter-ion and a colorless lactone in protic solvents. In order to understand the interaction between the S-205 and the solvent, absorption spectra of the S-205 in various solvents were measured. The systematic increase of the λ_max of the S-205 correlate with the solvent polarity of the solvent in protic solvent and aprotic solvent. The enthalpy changes of the S-205 has also been investigated. From the variation of absorbance with temperature, the standard enthalpy changes △H_0 the equilibrium between the lactone and the zwitter-ion in various solvents have been determined. The standard enthalpy change △H_0 is approximately -7 kJ/㏖ in protic solvents. In acidic solution, the standard enthalpy change is measured to be to zero in protic solvents within the experimental error. When the carboxylic group is protonated in acidic solution, a poor interaction between the dye and the solvent is expected.