인터넷 메타데이타 검색 및 관리 시스템의 설계 및 구현

이원석,박경용,양영종,정효택,김순용,이규철 한국문헌정보학회 1997 한국문헌정보학회지 Vol.31 No.2

인터넷은 디지탈 형태의 다양한 정보를 신속하게 전달한다는 점에서 매우 각광을 받고 있다. 그러나, 대량의 인터넷 정보 중에서 자신이 원하는 정보 자원을 정확하게 많이 얻어 낼 수 있는 방법의 제공은 매우 어려운 문제이다. 본 논문에서는 인터넷 정보 자원의 메타데이타를 관리하기 위해 SeriCore라는 SGML 형식의 메타데이타 DTD(Document Type Definition)를 정의하고, 이들 메타데이타를 효율적으로 저장하고 검색, 관리할 수 있는 시스템을 설계, 구현하였다 The Internet has gained popularity because ot provides various information in digital format. However, it is very difficult to provide methods which make it possible to search adequate information resource from bulk of Internet information. In this paper, we define a SGML metadata DTD, named SeriCore, and design and implement a metadata retrieval and management system which can store, retrieve and manage the Internet metadata efficiently

요배부 수술 실패 증후군에서 자기공명영상의 이용

이준규,안재성,권순태,김환정,정제택 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.2

This study was compared pre-operative MRI finding with operative finding on 36 cases with the failed back surgery syndrome (FBSS) retrospectively. The purpose of this study was to determine the accuracy of the MRI on the FBSS including early complications such as hematoma of infection. Of the 51 patients with FBSS, we analyzed pre-operative MRI finding compared with operative finding on 36 cases excluding nonunion, instability, metal failure and pseudoarthrosis who underwent an operation for the FBSS from December 1994 to June 1997. There were 25 men (69.4%) and 11 women (30.6%), aged from 16 to 68 years (average 43.6 years). These were divided into 5 sub-groups and calculated sensitivity, specificity and positive predictability. MRI accuracy in recurred disc was 84%, scar adhesion, recurred or developed stenosis, infection and hematoma 100% each and all, overall accuracy of the MRI 93%, respectively. Average interval of re-operation in FBSS WAS 4.3 years. In the 18 cases (50%), symptoms persist without pain-free interval after first operation. Early complications including hematoma and infection are easily detected with MRI. Especially if patient complains of severe leg pain or neurologic deficit, it is a good diagnostic procedure to check the MRI. The MRI is a useful method for evaluation of most cases of the FBSS, but it has limitations to evaluate recurred disc or scar adhesion only in T1, T2 weighted image. Therefore Gd-DTPA enhancement is necessary for the accurate diagnosis.

好氣性消化處理施設의 窒素除去에 관한 硏究

李宅淳 國立 昌原大學校 産業技術硏究所 1991 産技硏論文集 Vol.5 No.-

The purpose of this study is to investigate the removal rates of nitrogen in aerobic digestion treatment process. Chemostat-type bench scale experimentals reactors were used in this study. The experiment was successful and the foolowing results were obtained. Aerobic digestion precess might a chieve the organic removal, nitrification and denitrification even by a single aeration tank.

고농도유기성폐수의 호기성소화처리에 있어서 정화기구에 미치는 온도의 영향에 관한 동력학적 연구

李宅淳 國立 昌原大學校 産業技術硏究所 1988 産技硏論文集 Vol.2 No.-

The principal objective of this investigation was to study the effects of temperature on organic mater purification system in aerobic digestion treatment of high concentration organic waste-water. Chemostat-type bench scale experimentals reactors were used in this study. Digestion time were 6, 7, 10, 15, 20 and 30 days. Digestion temperature were 5℃, 10℃, 15℃, 20℃, 25℃, 30℃, 35℃. The following conclusions can be draw from the experimental results. Two-phase model is applicable in substrate removal type of aerobic digestion process of high concentration organic waste-water. At temperatures ranging from 20℃ to 30℃, accumulation of non-degradable compounds become more and more conspicuous. At temperatures ranging from 5℃ to 25℃, substrate removal rate is increase about 1.6 times in case temperature of 5℃ increase.

용지 호수공원의 수질관리 방안에 관한 연구

이춘수,서규태,문병현,이택순 7개 국립대학교 환경연구 논문집 공동발행 위원회 2003 공업기술연구 Vol.3 No.-

This study was performed for water quality management of Yonggi Lake Park in Changwon City. The results are as follows; The water quality of the lake was deteriorated during summer season because of algal blooming. It was estimated that existing treatment capacity of the lake water was not sufficient to meet the target lake water quality. And so the lake water circulation period, 40 days should be shorten to below 30 days by increasing the treatment capacity. Fountain and air supply facilities for 02 supply and mixing caused rather resuspension of solid settled at the bottom of the lake. It was also evident that the extended detention of water in the lake resulted in water quality deterioration. Consequently it is important to supply high quality water from other sources. Especially lower temperature water had better effect on improvement of the water quality.

好氣性消化法의 有機物除去機構에 미치는 流入基質濃度의 影響

李宅淳 國立 昌原大學校 産業技術硏究所 1989 産技硏論文集 Vol.3 No.-

The principal objective of this investigation was to the effects of substrate concentration on organic matter removal in aerobic digestion. Chemostat-type bench-scale experimental reactors were used in this study. The following conclusions can be drawn from the experimental results. At a temperature of 15℃, COD, BOD removal percent decreases as substrate concentration increase. However, COD, BOD removal rate is increase. The rate of sludge production is independent on substrate concentration. Substrate removal rate is dependent of loading rate and substrate concentration

레이저를 이용한 Tailored Blank 용접 판재의 피로거동

오택열,권윤기,이종재,곽대순 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.4

For the Tailor Welded Blank sheet used for automobile body panel, the characteristics of fatigue strength and crack propagation behavior were studied. The thickness of specimen was joined to be same (0.9mm+0.9mm) and different (0.9mm+2.0mm). As a base test, mechanical properties around weld zone were examined. The results indicated that there were no significant decreases in mechanical properties, but hardness around weld bead was 2.3 times greater than base material. The fatigue strength was the highest when the loading direction was parallel to the welding direction, which was about 85% of tensile strength of base metal. It was decreased by 8.5% when the thickness of specimen and base metal was different, and it was increased by 25% when pre-strain was applied. The crack propagation rate was noticeably decreased around weld line and rapidly increased as it passed through weld line. Reviewing the shape of the crack propagation, crack width around weld line was wide around the weld zone due to retardation of crack growth, but it became narrow passing weld line due to decreased toughness.

정수처리 공정에서 철과 망간 잔류 농도에 관한 연구

최미리,서규태,문병현,이택순 7개 국립대학교 환경연구 논문집 공동발행 위원회 2003 공업기술연구 Vol.3 No.-

This study was to investigate the cause of the color and turbidity in a small-scale water treatment plant using lakes water as water supply source. Water qualities in aqueducts, in depth of the lakes and in each process were measured. And effects of prechlorination on each unit operation in the water treatment, especially on iron and manganese removal, were studied. The concentration of iron and manganese was 0.13, 0.08 mg/L in the surface water and 1.93 and 0.433 mg/L in 15 m depth of the lake. Higher iron concentration of the inlet was measured to 5.35 mg/L which was caused by the steel aqueduct corrosion. The optimun coagulation dosages of Poly Aluminum Chloride(PAC) and Liquid Aluminum Sulfate (LAS) were 17.5 mg/L and 35 mg/L. Pretreatmnet of raw water with CaCOl improved the removal efficiencies of iron and manganes. However, more efficient method for removing iron and manganes was required.

우리나라 상차림의 영양적 평가

김영순,이정희,오순덕,김수현,이정민,남택수,박태식,천유정 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.1

This study was carried out to investigate the current nutritional problems owing to the increased consumption of westernized food in Korea and also was conducted to compare the nutritional characteristics of Korean traditional meal with those of the Western diet in similar serving size. The results obtained from nutritional evaluation are as follows: 1. The percentage of calories represented by carbohydrate: lipid: protein was 65:15:20 respectively for Korean traditional meal (Table setting of 3 Chop) therefore these ratios meet the dietary recommended allowances for Koreans. 2. Nutrient values of Korean traditional 3-Chop were shown to be better balanced than those of Western diet when the nutrients of the two types of diet were estimated by similar serving sizes and calories. 3. Compared to the Korean traditional meal, most fast foods were nutritionally imbalanced especially in that most of them showed higher amounts of fats. These results show that Korean traditional meals supply ideal nutrient intakes in contrasts to the westernized diet, therefore much work remains in developing a variety of menus and standard recipes for Korean traditional meals according to the changes in diet trends as well as emphasing the importance of Korean traditional meals as part of an ideal, well-banlanced diet.

Clozapine 투여후 발생한 급성 간염

장순주,이호택,백주희,이상연 대한신경정신의학회 1999 신경정신의학 Vol.38 No.1

Clozapine 투여 후에 급성 간염이 발생했던 두 명의 환자에 대한 증례로, 두 명 모두 이전에 약물에 이한 간염이 발생한 과거력이 있었던 환자로서 무증사의 급성 간염이 발생한 후에 보존적 치료 후에 호전 되었다. 간염이 발생한 후에 간효소수치에 대해 정기적으로 검사를 하면서, 사용하고 있던 clozapine의 용량을 낮춘 후 간장제를 투여함으로써 간효소수치는 정상화되었다. Clozapine과 비교하면 clozapine은 간세포의 cytochrome P450에 영향을 미치는 것으로 생각되고 있고 chlorpromazine은 간내 담즙저류에 영향을 미치는 것으로 생각된다. 과거 약물에 의한 간염을 경험한 환자는 clozapine에 의해 유도된 감염에 보다 취약성을 보일 가능성이 있으며, 이런 관점에서 이전의 간 기능 이상을 경험했거나 물질 사용 장애 등의 병발이 있을 경우 정기적인 간기능 평가가 임상적으로 중요할 것으로 판단된다. The authors report two cases of clzapine-induced acute hepatitis. Two patients developed asymptomatic hepatitis and got better with conservative care. We decreased the dosage of clozapine and added hepatic protections, resulting in normalized laboratory findings. The authors also reviewed side effects of clozapine in this report. We reviewed the suggested mechanism of either clozapine or chlorpromazine-induced hepatitis. clozapine influences the liver cell via cytochrome P 450 and chlorpromazine does so via mild cholestasis. There may be a possibility that a patient who has experienced drug-induced hepatitis is vulnerable to clozapine-induced acute hepatitis. In this respect, those who have experienced drug-induced hepatitis must be observed more closely.