전자통관 단일창구 활용 및 성과에 관한 실증 연구

김창봉(Chang-Bong Kim),이돈현(Don-Hyun Lee) 한국관세학회 2010 관세학회지 Vol.11 No.3

This study is to develop research models suitable for e-Customs Clearance Single Window and empirically analyze them in order to examine and verify factors affecting e-Customs Clearance system in Korea on the basis of previously-verified studies such as Technology Accept Model(TAM), Task-Technology Fit Model(TTF) and managing tool like a Plan-Do-Check-reAct(PDCA) Model. Among many factors, this paper comprehensively analyzes an acceptance factor, which is one of the factors affecting the implementation and performance of e-Customs Clearance Single Window, from the Information Technological context, the Public Administration Task context in the customs clearance office, and the quality management environmental context. The finding from this paper are four factors which affecting on the e-Customs Clearance Single Window. The planing phase's factors affecting on the Do, Check, reAct, use rate and effect. The doing phase's factors don't affecting on the Check, reAct, use rate and effect. The checking phase's factors affecting a little bit on the reAct and effect but don't affecting on use rate. The reActing phase's factors don't affecting on use rate, but affecting on the effect. The use rate of e-Customs Clearance Single Windows affecting on the effect a little bit. So we can say there are the correlation between IT acceptance and performance on the e-Customs Clearance Single Window.

결장직장암 환자의 임상적 고찰 : 조선대학교 부속병원의 10년 간의 결과

나은종,문성표,장정환,김권천,민영돈,김성환,조현진,김정용,김경종 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.2

Background and Objectives: The colorectal cancer rates 4th in the total cancer prevalence in Korea. The clinical patient demographics were considered with the incidence rate of the colon and rectal cancer. The clinicopathological factors were analyzed for the 5 year survival rate. Materials Methods: Of the 282 patients who were operated from Jan. 1, 1992 to Dec. 31, 2001 and diagnosed by pathological biopsy as colo-rectal cancer, 234 patients were followed up. The age, sex, location of the cancer, TNM stage, operation method, histopathological classification, metastatic region, complications after operation and the survival rate were investigated. Results: Of the 234 patients, male and female consisted of 120 cases (51.3%) and 114 cases (46.7%), with an average age of 61.6 years. The average follow up period was 52.3 months and the peri operative mortality was 5.6%. The site of the cancer was most frequent at the rectum with 127 cases (54.3%). The patients were classified according to the TNM stages with 38 cases of stage 1 (16.2%), 98 cases of II (41.9%), 72 cases of III (30.8%) and 26 cases of IV (11.1%). The 5 year survival rate in the age group older than 50 was 63.3 % and 73.5% in the group younger than 50. In regard to the operation type, the 5 year survival rate was 65.4% for elective operation and 65.8% for emergency operation. The 5 year survival rate for well differentiated, moderately differentiated, poorly differentiated cancer, and mucinous adenocarcinoma was 73.7%, 60.2%, 58.3%, and 92.6%, respectively. The 5 year survival rate of each of the TNM stage is 81.1%, 74.8%, 57.0%, and 11.5% for Classes I, II, III, and IV, respectively. Conclusion: The clinical factors were analyzed for the 5 year survival rate with no statistical significance for the age, sex, and location of the cancer. The TNM stage and histopathological differentiation were statistically significant. The colon cancer showed better prognosis compared to the rectal cancer.

반복작업으로 유발된 수근관내의 굴곡근 건초염과 수근관 증후군 : 증례 보고 Case Report

김돈규,서경묵,신주연,강시현,송인섭 중앙대학교 의과대학 의과학연구소 2003 中央醫大誌 Vol.28 No.1

A 46 year-old woman who had worked repetitive manual job for 3 years visited our hospital because of aggravated right hand sensory symptom and newly developed limitation of 3, 4, 5th finger extension. In physical examination, moderate swelling of volar aspect of wrist and limitation of finger extension was noticed as well as positive tinnel sign. We confirmed carpal tunnel syndrome after electrodiagnostic studies and associated flexor tenosynovitis of 4th flexor tendon in the carpal tunnel through MRI (magnetic resonance imaging) study. She was successfully treated with conservative program including wrist splint and steroid injection. We also tracked the result of treatment using MRI and electrodiagnositic studies. Analyzing her work procedure, we concluded that repetitive and forceful exertional nature of job impose a high burden on hand and wrist region and it caused her carpal tunnel syndrome.

소결밀도에 따른 분말 소결금속과 탄소강의 이종금속 레이저 용접성 고찰

김용,양현석,박기영,이경돈 한국레이저가공학회 2008 한국레이저가공학회지 Vol.11 No.2

Sintered specimen which used for a blade of diamond tool was manufactured in order to verify CO_(2) laser weldability depend on sintered temperature. Five kind of specimen were prepared and the range of temperature is from 600℃ to 1000℃ at intervals of 100℃. As a result of the sintered density test, the porosity rate appeared in the range of 2.1%∼21.4%. After welding, the most segments had exceeds the minimum fracture stress (600MPa, The Standard Safety of Europe) at the welding strength test except on the sintered at 600℃. In case of the sintered at 700℃, even satisfied the safety allowable stress but cannot get the good quality for bead appearance because of humping defect. In the conclusion, we could know that it showed not only relatively soundness bead but also enough welding strength when the sintered blade of diamond tool is included less than 4% of porosity rate.

老人의 生活 滿足度와 이에 影響을 미치는 要因

金載敦,南喆鉉 대한보건협회 1997 대한보건연구 Vol.23 No.2

This study aims at devising a policy and a measure for solution of olders' problem such as olders' health welfare to heighten the satisfied degree of increasing old aged population, and establishing a nursing home. This questionnaire was made from April 1, 1995 through April 30, for 1 month by the old 300 who had their spouse, from big cities like Seoul, Taegu, Pusan, from medium and small cities like Kyongsan, Wisan, Jochiwon and outskirts. We obtain a result as below form interviewing and analyzing the investigation data of Korean Health Social Research Institute. The summary and conclusions are as follows. 1. General characteristics of the respondents; 61.1% were men, 42.2% were in the age group of 60~64, 35.0% were graduates of primary school, 47.3% were having no religion, 92.6% were from farming or fishing villages, in long term residence, 77.1% were in farming of fishing villages, monthly income were 200~390 thousand a couple jointly, 83.0% were the residents in an individual house. 2. The LSI level of the respondents was 11.49 +/- 5.70(47.0/100) of the perfect score 24. It was significantly high when the age is younger, when the education level was higher, and when the monthly income was more. And it was respectively higher than the other groups in men, in Buddhists(P<0.05). 3. The LSI level was high in the old, when the education level was higher, when monthly income was more, when the economic status was better, when going to a hospital, clinic, of pharmacy was more convenient(P<0.001). The residents living in an apartment and the owner of a persent house were significantly high in single old women. But there was no significance statistically in age, religion, having a single room or not. 4. LSI by the self existence was high when being respected from youth(P<0.05), when being treated warmly, and when the frequency to participate in decision family problem was more frequent(P<0.001). 5. LSI was high when the respondents had no desease(P<0.001), when the health status was better(P<0.001). 6. LSI was high when ADL like bathing, changing clothes, eating, getting up, going out, going to stool, and so on was easier(P< 0.001). 7. LSI was significantly high when he or she had sons or daughters who lived apart, when the frequency of meeting or getting in touch with them were frequent, when the frequency of meeting with brothers and sisters or grandchildren who were living were frequent, when the frequency of connection with friends, neighbors, and relatives were frequent. In case that he or she had parents, brothers and sisters, or grandchildren who live apart, LSI was high. But there was no significance. 8. LSI was high when the frequency of meeting with brothers and sisters who were living and grandchildren were frequent, when the frequency of connecting with friends, neighbors, and relatives were frequent(P<0.001). 9. The main factors which had a significant effect on LSI were a degree of playing a part in the family, a monthly income, religion, the frequency of meeting and connecting with sons and daughters who were living apart. The related variables could explain 52.8%. As mentioned above, to heighten LSI of the old, it is important to have many chances to meet family, relatives, friends and neighbors. In addition the convenience of a house, considering the benefit of health care, to be treated well and realize his self-existence, to help play a social role, to get rid of difficulty in ADL. To do this, government, religion groups, related groups, related professionals have to devise a policy and a measure with great interests. For the development of health care welfare facility and education data for the aged, consider to fill up the LSI of the old.

CaO-SiO_2-MgO_(sat.)-Fe_tO 슬래그와 용철사이의 V 평형분배비

金抗洙,鄭雨光,趙南敦,崔鉉洙 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.4

The equilibrium study has been made on the vanadium distribution between CaO-SiO_2-MgO_ast.-Fe_tO slag and liquid iron over the temperature range from 1540℃ to 1640℃. The vanadium distribution ratios(L_v) were approximately larger than phosphorous distribution ratios(L_p) by a factor of 10∼100 times. The L_v dependence on slag composition and temperature was found to be similar to the case of L_p. The vanadium distribution ratio increases with the slag basicity and Fe_tO content in slag, but decreases with the increase of temperature. A linear relationship was observed between logarithm of (V)/{[V][O]^n} (n=2 or 2.5) and (CaO+0.3MgO)/SiO_2. It is assumed that the vanadium ion is in the form of V^4+ or V^5+ in slag. The mutual function relating the slag components, F_s=0.58(CaO/ SiO_2)+0.025Fe_tO, was introduced to explain quantitatively the influence of slag composition on the vanadium distribution ratio. The log values of vanadium distribution ratio as a function of Fs were derived at the fixed temerature of 1590℃ and 1640℃.

저혈청 배지에서 인간 전골수세포(HL-60)를 이용한 tPA 생산과 세포사멸기작에 관한 연구

김현구,성기돈,김태호,안주희,함문선,박진서,이현용 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.1

tPA 생산과 세포 사멸의 연구를 하기 위해서 인간 전골수세포가 배양되었다. 연속 관류 배양하에서 최대 tPA 생산량은 324 ng/ml이며 최대 세포 농도는 5.27×10 exp (6) cells/ml였다. Phorbol ester를 넣었을 때 tPA 생산량은 420 ng/ml까지 향상되었다. 형광 현미경으로 관찰했을 때, apoptosis는 세포 배양 초기부터 중반까지 우세했고 빠른 교반 속도에서도 우세했다. 그러나 necrosis는 세포배양 말기와 동결된 세포가 해동 되었을 때 우세했다. HL-60 was cultivated to produce tPA (tissue-type plasminogen activator) and study the mechanism of cell death. Maximum cell density and tPA production were obtained as 5.27×10 exp (6) cells/ml and 324 ng/ml, respectively under perfusion cultivation. tPA production was enhanced to 420 ng/ml in adding 160 nM of phorbol ester. The cells were gradually differentiated to granulocytes rather than proliferation. By Fluorescent microscope, apoptosis was prevailed except the death phase and in high agitation speed, but necrosis was prevailed in thawed cells and during the latter periods of the cultivation. It was also proved that tPA was most produced in apoptosis. To obtain higher tPA productivity, the cells must be maintained in apoptosis, not necrosis phase when the cells were dying.

유기용제 취급근로자들의 요중대사물질과 말초임파구 자매염색분체교환 발현빈도에 관한 조사연구

김돈균,황인경,류철인,이수일,정갑열,이용환,이충렬,현원일,김석봉,전용덕 大韓産業醫學會 1990 대한직업환경의학회지 Vol.2 No.1

저자들은 유기용제 취급여성근로자 90명을 대상으로 1988년 7월부터 1989년 8월까지 말초혈액임파구에서의 자매염색분체교환의 발현빈도를 조사하고 이들의 업종, 근속연수, 요중마뇨산 농도등이 자매염색분체교환의 발현빈도에 미치는 영향을 조사하였으며 그 결과를 요약하면 다음과 같다. 1. 유기용제 취급근로자들의 말초혈액임파구에서의 자매염색분체교환의 발현빈도는 대조군에 비하여 유의하게 증가되었다. 2. 말초혈액임파구에서의 자매염색분체교환의 발현빈도가 가장 높은 업종은 프라스틱제품 제조업이었다. 3. 근속연수가 말초혈액임파구에서의 자매염색분체교환의 발현빈도에 미치는 영향은 현저하지 않았다. 4. 요중마뇨산농도와 말초혈액임파구에서의 자매염색분체교환의 발현빈도간에는 유의한 상관관계가 있었다. In order to know the possibility of utilizing the sister chromatid exchanges as an index which could evaluate the effect of organic solvents on the health in industrial workers, the authors studied the effects of the inductivity of sister chromatid exchanges in peripheral lymphocytes from 90 female workers expoxed to organic solvents and 20 non-exposed female workers. The results obtained were as follows : 1. The frequency of sister chromatid exchanges in peripheral lymphocytes from 90 female workers exposed to organic solvents was significantly increased in comparison with 20 control subject. 2. The frequency of sister chromatid exchanges was significantly increased in the workers who were employed in the manufacture of plastic materials than the other manufactures. 3. There were no significant differences in the frequency of sister chromatid exchanges by carriers of the exposed workers.

中高等學校 數學敎育課程의 連繫性에 관한 硏究 : 幾何學的 領域을 中心으로

김명수,이재돈,송현섭 대구대학교 부설 과학교육연구소 1992 과학교육 Vol.5 No.-

미생물 유래 β-glucan 분리 · 정제 및 이를 이용한 오염물질 정화용 복합 미생물제재 개발

서현효,이현돈,김형갑 진주산업대학교 산업과학기술연구소 2007 산업과학기술연구소보 Vol.- No.14

β-glucan occuring mainly in mushrooms and fungi are attractive candidates for numerous industrial application due to their pharmacological activity such as antitumor activity via immunomodulating behavior and excellent rheological properties such as emulsification, viscosity, jellation, etc. Screening of β-glucan producing microorganism was performed by congo red dye binding assay of ethanol-precipitates from each culture filtrate. The β-glucan produced form the selected strains was purified mainly by directly diluting the culture broth with the same volume of water, removal of cells by centrifugation at 4,000×g for 20 mim, and precipitation with 3 volumes of ethanol. The monosaccharide composition was analyzed by either TLC or HPLC afer trifuoroacetic acid hydrolysis. The molecular mass of the β-glucan of HH-71 strain was estimated to be about 4,500,000 dalton on a GFC-HPLC chromatogram. A Bacillus protease coated with β-glucan showed 3-times more increased thermal stability comparing to the uncoated control when stored at 30℃ for 1 week. In a similar manner coating of wastewater (containing chlorinated organic compounds) treatment bacteria with β-glucan resulted in significant increase of thermal stability. Although more detailed experimental data need to be accumulated, these preliminary data clearly suggest that β-glucan is applicable as a coating material to stabilize activity or viability of industrial enzymes and microorganisms for treatment of wastewater. Based on these results, β-glucans obtained from HH-71 and HH-87 strains are currently investigated for coating ablility of microbial consortia for the treatment of wastewater.