기상변화에 따른 국내 아스팔트포장의 온도분포특성 연구

김수삼,고석범 중앙대학교 생산공학연구소 1999 생산공학연구소 논문집 Vol.8 No.2

본 연구는 우리 나라의 계절별 기상변화에 따른 아스팔트포장의 온도특성을 파악한기 위하여 과거 30년간의 가상자료와 3년동안 실측한 현장자료를 분석하였다. 또한 대기온도변화에 따른 포장체 내부온도변화 모델을 이론적으로 제시하였고 이를 실제 포장온도와 비교 분석하여 모델의 신뢰성을 검증하였다. 특히, 이 모델을 이용하여 개발된 프로그램의 예측결과에 미치는 제상수의 영향을 검토하기 위해 일사량, 일출 . 일몰 시간, 기온에 대한 민감도 분석을 실시하였다. 이 모델을 이용하여 기상변화에 따른 아스팔트 포장온도의 분포 특성을 제시하였다. 국내 포장온도 분포 특성은 궁극적으로 소성변형 방지를 위해 국내여건을 고려한 Performance Grade system 등급 선정을 위한 기초자료로 활용된 것이다. The study analysis field data for three years and weathers data for the past thiry years to comprehend temperature characteristics of asphalt pavement due to the weather accrding to seasons. In the study, the model of the pavement structure temperature variation with air temperature variation was suggested theoretically, which was compared, analyzed with the field pavement temperature and proved. In special, the analysis of sensitivity on the mount of radiation, sunset, sunrise and temperature was performed to review the influence of the input constants on the result of prediction by using this model. The characteristics of temperature distribution of national asphalt pavement was suggested by using this model according to the change ofweather. Most of all, this study is to be used as the basic data for rating of performance Grade System which was considered for the situation of Korea for the prevention ofrutting.

국내 주요 호수의 육수학적 조사(4): 주암호

김범철,박주현,허우명,임병진,황길순,최광순,최종수 江原大學校 附設 環境硏究所 2001 環境硏究 Vol.18 No.-

In this study limnological characteristics of Lake Juam was surveyed from June 1993 to May 1994 in order to provides important information regarding water resources. Seschi disc transparency, epilimnetic chlorophyll a(chl-a), tatal nitrogen(TN), total phosphorus(TP) concentration and primary productivity were in the range of 2.0~4.5 m, 0.9~13.6 mgChl/㎥, 0.78~2.32N/l, 11~56 mgP/㎥, 270~2,160mgCm^(-2)day^(-1), respectively. On the basis of TP, Chl-a and Secchi disc depth, the trophic state of Lake Juam can be classified as mesotrophic lake. The phosphorus inputs from non-point sources are concentrated in heavy rain episodes during the monsoon season. As a result, phosphorus concentration are higher in summer than in winter. TP loading from the watershed were estimated to be 0.9 gPm^(-2)yr(-1), which correspond to a boundary of the critical loading (1.0 gPm^(-2)yr(-1), which correspond to a boundary of the critical loading (1.0 gPm^(-2)yr(-1)) for eutrophication. From the results of the algal assay, both phosphous and nitrogen act as limiting nutrients in algal growth. The seasonal succession of phytoplankton community structure in Lake Juam was similar to that observed in other temperate lakes. Diatoms(Asterionella formosa and Aulacoseira granulata var. angustissima) were dominant in spring and winter, cyanobacteria (Microcystis aeruginosa, M. sp. and M. viridis) were dominant in warm season. The organic carbon, nitrogen and phosphorus content of lake sediment were 9.5~14.0 mgC/g, 1.01~1.82 mgN/g, and 0.51~0.65 mgP/g, respectively. The allochthonous organic carbon loading from the watershed and autochthonous organic carbon loading by primary production of phytoplankton were determined to be 1,122 tC/yr and 6,718 tC/yr, respectively. To prevent eutrophication of Lake Juam, nutrient management of watershed should be focus on reduction of fertilizer application, proper treatment of manure, and conservation of topsoil as well as point source.

국내 아스팔트 포장의 소성변형으로 인한 유지보수 비용 및 방지대책에 관한 연구

고석범,김수삼,박태순 중앙대학교 생산공학연구소 1999 생산공학연구소 논문집 Vol.8 No.2

본 연구는 아스팔트 포장의 현장조사 자료를 근거로 기존 포장을 유지보수하기 위하여 사용한 과거 10년간의 예산사용액을 타토목구조물과 비교 검토하였으며, 소성 변형으로 인한 문제점, 소성변형에 영향을 미치는 인자를 분석하였다. 특히, 우리나라 소성변형 발생원인 및 특성, 소성변형 발생 장소 및 유형을 조사 분석하여 소성변형 방지방안에 대해 검토하였다. 본 연구는 아스팔트 포장의 소성변형으로 인하여 매년 증가하고 있는 유지보수 비용을 절감하는데 연구의 목적이 있다. The study was compare and review the budget of other civil structure with that which has been used to maintain and repair the old pavement for ten years on the field investigation data of asphalt pavement as well as to analyze the problems occurred by the plastic deformation and the factors affecting plastic deformation. In especial, the method to prevent plastic deformation was reviewed by analyzing the causes and characteristics, place, type which plastic deformation has occurred in Korea. The purpose of this study is to decrease the cost of maintenance thtat had been increased due to the plastic deformation of asphalt pavement.

논 토양조건에 따른 찰옥수수 교잡종의 작물학적 특성

지희정,김충수,홍범용,이희봉 충남대학교 농업과학연구소 2006 농업과학연구 Vol.33 No.2

This study was carried out to compare growth and yield performance for soil conditions at the Maize Genetics and Breeding Lab, in Chungnam National University. The waxy hybrid corn in the drained soil of paddy field showed higher fresh yield per 10a and 100-kernel weight per plant than control. The average dry yield of drained and drainless soil were 804kg/10a and 498kg/10a compared with a control (751kg/10a), respectively. The waxy hybrid corn in the drained soil also had better good stand and stay green characteristics than drainless soil condition, and showed moderately resistance to water stress and weed. Vegetational feature of weeds was characterized as the prevalence of Acalypha auatralis, Echinochloa crus-galli, Persicaria hydrpopiper in drained paddy soil and Persicaria hydrpopiper, Acalypha auatralis, Echinochloa crus-galli in drainless paddy soil, and Echinochloa crus-galli, Acalypha auatralis in upland soil.

ANATOMICAL EXPANDER와 IMPLANT를 이용한 유방 재건의 경험

고법민,박원진,김재중,하범준,이재승,신명수 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3

The use of a tissue expander and implant is the simplest option for breast reconstruction after mastectomy. Use of a round dome-shaped prosthesis and the commonly used one-stage technique with a Becker type prosthesis, however, often produces an undesirable upper pole fullness. To overcome this and to achieve improved aesthetic results, we started using an anatomically-shaped expander and implant, as described by Maxwell, as a two-stage breast reconstruction. We reviewed the results of our 21 reconstructed breasts in 22 patients who were deemed suitable for reconstruction using this technique since January 1995. The most commonly used expander was 350cc (range 350-550cc) and an average of 4.2 inflations were required before replacing the expander with a permanent implant. All the expanders were placed in submuscular pockets and implant volume. The longest follow-up was 36 months. Few complications developed and most patients were satisfied with the results. We found that the anatomically-shaped expander and implant produced better aesthetic results compared to a done-shaped prosthesis.

도시 저소득층 고령 주민의 구강건강실태

허복,박수병,김진범,손우성 韓國保健敎育學會 1996 보건교육건강증진학회지 Vol.13 No.1

The oral health status and practices related to oral health among 44-54-year-, 564-year- and 65-year-old needy residents were assessed. The subjects were the residents at the Unbong Permanent Rental Apartment, Bansong-dong, Haeundae-gu, Pusan, Korea. An oral epidemiological survey was undertaken to determine the status of dental caries and periodontal health. Periodontal health were analyzed by the tool of CPITN(Community Periodontal Index of Treatment Needs). A questionnaire was used to interview for the practices of toothbrushing. The numbers of subjects were 192 for the interview on toothbrushing, 228 for the survey of dental status and 208 for the survey of periodontal status. The major results were as follows: 1. Toothbrushing frequencies per day were 1.9 among 44-54-year-, 1.7 among 55-64-year- and 1.7 among 65+-year-subjects. Percentages of after-meal-toothbrushings among total brushing frequencies per day were 73.7% among 44-54-year-, 70.6% among 55-64-year- and 76.5% among 65+-year-subjects. 2. DMFT indices were 15.5 among 44-54-year-, 16.4 among 55-64-year- and 26.6 among 65-year-subjects. Decayed teeth component of DMF teeth were 23.9% among 44-54-year-, 11.6% among 55-64-year- and 62.8% among 65+-year-subjects. Missed teeth component of DMF teeth were 55.59% among 44-54-year-, 62.8% among 55-64-year- and 77.4% among 65+-year-subjects. Filled teeth component DMF teeth were 20.0% among 44-54-year-, 25.0% among 55-64-year- and 10.9% among 65+-year-subjects. 3. Sound permanent teeth were 16.4 among 44-54-year-, 15.6 among 55-64-year-, and 5.4 among 65+-year-subjects. Present permanent teeth were 23.7 among 44-54-year-, 21.6 among 55-65-year- and 10.9 among 65-year-subjects. 4. Subjects who needed professional oral prophylaxis were 75.0% among 44-54-year-, 83.3% among 55-64-year- and 76.9% among 65-year-subjects. Subjects who needed complex periodontal treatments were 16.7% among 44-54-year-, 13.3% among 55-64-year- and 15.4% among 65+-year-subjects. 5. Sextants which needed professional oral prophylaxis were 59.3% among 44-54-year-, 71.5% among 55-64-year- and 71.5% among 65+-year-subjects. Sextants which needed complex periodontal treatments were 5.6% among 44-54-year-, 4.1% among 55-64-year- and 5.7% among 65+-year-subjects. 6. Systematic comprehensive oral health care services should be developed for old needy residents in urban area.

주혈관이 하나만 남은 하퇴부 연부조직 결손 환자에서 비복혈관(sural vessel)을 수혜혈관으로 한 유리피판 전이

변재경,하범준,현원석,김재중,신명수 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3

Free flaps have been widely used in lower leg reconstruction. However, in cases with extensive injury to the vessels as well as to the bone and soft tissues, and having only one intact major vessel in the lower leg(single vessel leg), careful selection of recipient vessels for the free flap transfer is mandatory for preventing further vascular compromise of the distal lower leg. The sural artery and its vena comitantes are frequently protected form externally harmful forces by the bulky surrounding gastrocnemius muscle and can be used as recipient vessles for free flaps without any detrimental influence on the vascularity of the distal lower leg. In our department, three latissimus dorsi muscle free flap were transferred with sural vessels as recipient vessels in the reconstruction of the single vessel legs. Except for one case of flap failure due to serious infection at the microvascular anastomoses site, all the other cases were successfully reconstructed without any necrosis of the gastrocnemius muscle or the distal leg. In addition, the sural vessels were easily accessed in any patient position and their caliber was similar to that of the vascular pedicles of the donor muscle flaps. In conclusion, the sural vessels can be another useful option in selecting recipient vessels for free flap transfer in the reconstruction of the single vessel leg.

LED 전광판 제어 ASIC의 설계

남상길,조경연,이수범,김종진 釜慶大學校 1997 釜慶大學校 論文集 Vol.2 No.2

The wide spread of multimedia system demands a wide viewing angle display device which can imform a message to many peoples in open area. This paper is about the design and simulating of a large viewing LED pannel control ASIC(Application Specific Integrated Circuit). This LED pannel control ASIC runs on 16bit micropricessor MC68EC000 and has following functions : 16 line interlaced LED pannel contriller, memory controller, 16 channel priority interrupt cotroller, 2 channel direct memory access controller, 2 channel 12 bit clcok and timer, 2channel infrared remocon receiver, 2 channel RS-23C with 16 byte FIFO, IBMPC/AT compatible keyboard interface, battery battery backuped real time clock and timer,2controller, battery backuped 256 byte SRAM and watch dog timer. The 0.6 micronCMOS Sea of Gate is used to desing the ASIC in amiunt of about 39,000 gates,and it is simulated at 48MHz

도암호의 수질과 어류군집 특성 연구

이상하,최재석,이광열,장영수,임인수,허우명,김재구,김범철 강원대학교 부속 환경연구소 2005 Journal of the Environment Vol.2 No.-

To investigate nutrient dynamics of the lake and fish community, both water and fish samples were collected at three different areas (dam site, upper inflowing and downstream of lake outfow) for one year from Sep.2004 to Aug.2005 During the experimental periods, mean concentration of chl, a in epilimnetic layer (0-5m) was 18.5mg^(-3) and transparency ranged from 0.3m to 2.4m, respectively. In nutrient, mean concentrations of TP and TN were 111 mgP m^(-3) and 4.4 mgN L^(-1), respectively. Based on the water quality standard suggested by U.S.EPA(*1976), the trophic state of Lake Doam was classified as eutrophic state. Total number of fish collected in Lake Doam was 9,600 indiveduals in 26 species of 6 family. Sixteen of Korean endemic soecies including H. mylodon, A. signifer, P. tenuicorpa occurred. O. mykiss as introduced fish was also found in Lake Doam. Dominant and subdominant species were P. herzi and Z. platypus that took about 34.6% and 22.5% of total fish composition, respectively. Six species including A. signifer. P. tenuicorpa. and R. kumgangensis were rare in Lake Doam. Pelagic typw of figh commonly occurred at upper regions, whereas benthic type was mainly domenated at downstream area. Therefore, pollution source inflowed from the upper regions did not seriously affect downstream area (Songcheon water system) due to the role of dam as pollutant barrier. In addition high appearance of Comat type of fish that si hybrid between gold fish (C.auratus) and C. auratus was found in the lake, It was unclear the reasons that high prorortion of mutant species apperared in the lake. Further more researches are required in this area.

Different Cerebral Metabolic Features in Dementia with Lewy Bodies with/without visual hallucination

( Bom Sahn Kim ),( Yu Kyeong Kim ),( Young Soon Yang ),( Eun Kyung Park ),( Sang Soo Cho ),( Sang Yun Kim ),( Sang Eun Kim ) 대한핵의학회 2007 핵의학 분자영상 Vol.41 No.5