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      • 소아에서 발생한 일광 두드러기 1례

        강훈,조상현,김의한,강훈 대한알레르기학회 1999 천식 및 알레르기 Vol.19 No.3

        Solar urticaria is a rare disorder in which immediate erythema and wheals are induced by ultraviolet or visible irradiation. This condition usually occurs in the third and fifth decades of life and is very rare in childhood. A 3-year-old girl presented with a history of an erythematous rash which had occurred on the face and neck, immediately after exposure to sunlight for one month. A diagnosis of solar urtiacria was made on the clinical reviews and phototest. Other photosensitive disorders could be excluded by the clinical and laboratory findings. She was treated with ketotifen and sun protection showing good early results.

      • SCOPUSKCI등재

        고관절 전치환술에서 전신 마취와 척추 마취의 비교

        강훈,임승운,박종국 대한마취과학회 1994 Korean Journal of Anesthesiology Vol.27 No.8

        Major surgeries such as total hip arthroplasty are likely to be associated with high incidences of perioperative morbidity and mortality, which may be compounded by the increased risk of heavy bleeding. It has been reported that these complications may occur more commonly when general, rather than spinal anesthesia is used. This study was undertaken to investigate whether spinal anesthesia is clinically safer than general anesthesia undergoing total hip arthroplasty. Forty-one patients were classified randomly into 2 groups to compare the effects of spinal versus general anesthesia on blood pressure, pulse rate, amounts of blood loss and transfusion, and complications in total hip arthroplasty. In general anesthesia groups, systolic blood pressure significantly increased from the baseline of 125.6±14.4 mmHg to 137.2±12.7 mmHg at 10 minutes post-induction (p$lt;0.05). Pulse rate also increased from the baseline of 75.2±1.6 beats/min to 90.3±8.0 beats/min at 10 minutes post- induction. In spinal anesthesia grosystolic blood pressure significantly decreased from the baseline of 121.5±11.5 mmHg to 113.4±15.8 mmHg at 10 minutes post-induction (p$lt;0.05). Pulse rate also decreased from the baseline 78.6±11.9 beats/min to 74.2±5.2 beats/min at 10 minutes post-induction. After 10 minutes post-induction, systolic blood pressure and pulse rate became stable in both groups. The amount of intraoperative blood loss was less in spinal anesthesia group (510±140 ml) than in the g anesthesia group (720±150 ml). However, difference in the amount of blood transfused was not significant in the two groups. Postoperative hemoglobin values showed a marked decreases in both group. The complication rates were similar in both groups. It appears that blood loss during total bip arthroplasty is less in the spinal than general anesthesia group. However, other clinical variables investigated are not significantly different in the two groups.

      • KCI등재

        Design of flow control fucntion for ABR service in ATM networks

        강훈,이숭희,Kang, Hun,Lee, Soong-Hee The Korean Institute of Communications and Informa 1998 韓國通信學會論文誌 Vol.23 No.5

        본 논문에서는 ATM 망에서 ABR 서비스를 제공하기 위하여 ATM 포럼에서 표준화를 진행하고 있는 망 종단간 흐름제어 기능을 설계하기 위한 제반 고려 사항들을 살펴보고 구현을 위한 설계 고조를 제시한다. 제시한 설계 구조에서는 구현의 용이성과 제어 변수의 효율적인 가변을 위하여 제어 파라미터를 계산 및 조정하고 자원 관리 셀을 처리하는 부분은 소프트웨어로, 실제 셀을 허용된 속도로 송출하는 부분은 하드웨어로 구현하여 실시간으로 송출 트래픽의 흐름 제어가 가능하도록 하였다. 제안한 설계 구조는 추후 표준화의 진행으로 인한 제어 파라미터의 산출 방식 및 적용 방법의 변경에도 쉽게 대처할 수 있고 실시간으로 제어하는 구조가 단순하여 구현 비용을 절감할 수 있는 구조로서 추후 구축될 ATM 망에서 ABR 서비스를 제공하는데 기여할 수 있을 것으로 개대된다. We survey several issues for implementing the end-to-end flow control function for ABR service and propose a structure for implementation. In the proposed design, control parameters are calculated and maneuvered by software for easy implementation and efficiency adaptbility for the changes of parameters while the cells are emitted at the rate according to the allowed cell rate with the hardware implementation for real time processing. The proposed structure can cope with the changes of the specifications including the calculation of the control parameters and their application. Hence, the structure is expected to contribute to providing the ABR serice in the future ATM networks.

      • Influence of NaCl on Seed Germination of Cool-Season Turfgrass species

        강훈,이치원,Kang, Hoon,Lee, Chi-Won Turfgrass Society of Korea 1999 한국잔디학회지 Vol.13 No.2

        The influence of increasing livel (0.0, 0.05, 0.1, 0.2, 0.4, 0.6, 0.8, 1.2, 1.6, and 2.0%) fo NaCl on the germination of red fescue (Festuca rubra) 'Sea Breeze', tall fesce(Festucaarundinacea) 'Pixie', creeping red fescue (Festuca rubra ssp. rubra) 'Cindy', annual rye-grass (Lolium multiflorum) 'Permer Ⅱ', perennial ryegrass (Lolium perenne) 'Pennant', fairway wheatgrass(Agropyron cristatum), creeping bentgrass (Agrostis palustris) 'Penncross', and kentucky bluegrass (Poa pratensis) 'Nuglade' was investigated. Red fescue 'Sea Breeze', tall fescue 'Pixie', and creeping red fescue 'Cindy' had greater than 90% seed germination at NaCl concentrations of 0.2% or lower, while showing similar seeding shoot and root lengths and TAA50 values as the control. Creeping red fescue 'Cindy'gave at 0.6% or higher NaCl. Perennial ryegrass 'Pennant' and annual ryegrass 'Permer Ⅱ' showed more than 95% seed germination when NaCl concentrations were 0.4% and 0.8%, respectively. Fairway wheatgrass, creeping bentgrass 'Penncross' and Kentucky bluegrass 'Nugade' had showing similar germination percent, shoot and root lengths and T50 values as the control at NaCl concentrations of 0.1% or lower. In general, germination percent and the lengthes of seedling roots and shoots of all species tested decreased as NaCl concentrations iscreased. The T50 values became greater as NaCl concentration increased. Seed fermination in red fescue 'Sea Breeze', tall fescue 'Pixie',perennial ryegrass 'Pennant', and annual ryegrass 'Permer Ⅱ' was compoetely inhibited at 2.0% NaCl. Creeping red fescue 'Cindy' and fairway wheatgrass gardly germinated at 1.6% MaCl. Creeping bentgrass 'Penncross' and Dentucky bluegrass 'Nuglade' showed a complete inhibition of germination at 1.2% and 0.6% NaCl, respectively.

      • 약진의 임상적 고찰

        강훈,조상현,김대호,박영민 대한알레르기학회 2000 천식 및 알레르기 Vol.20 No.3

        Background: Drug eruption is a relatively common disorder and may cause significant problems. Nevertheless, there have only been a few clinical studies of drug eruption in Korea. Objective : The purpose of this study was to define the clinical features and causative drugs of drug eruption, and to evaluate the diagnostic value of skin test and provocation test. Methods : We reviewed clinical data and laboratory results from 161 patients with drug eruptions. Furthermore, we performed skin test and provocation test on 12 and 8 patients, respectively. Results : The common clinical types were fixed drug eruption (31%), exanthematous eruption (29.8%), urticaria (9%), and EM/Stevens-Johnson syndrome/TEN (5%). The mean latent period was 14.1 days, varying from 3.6 days for fixed drug eruption to 175 days for lichenoid eruption. The major causative drugs were antibiotics (23.6%), common cold remedies (20.5%), nonsteroidal antiinflammatory drugs (10.6%), and herb medication and health foods (5.6%). The evaluation of the frequencies of drug eruption revealed 43.5% of the patients with one attack, and 32% of the patients be more than two attacks. The common underlying diseases were upper respiratory infection (26.7%), postoperative prophylactic medications (15.0%), infections (14.3%), and gastrointestinal troubles (6.2%). The skin test was positive in 5 of 12 patients (41.7%), and provocation test was positive in 2 of 8 patients (25%). Among the clinical types of drug eruption, EM/Stevens-Johnson syndrome/TEN had the earliest onset (25 years) and pustular type showed the latest onset (49.1 years). Females were more commonly affected than males in exanthematous type (2.7:1) and EM/Stevens-Johnson syndrome/ TEN (3:1). Comparing frequencies of drug eruption, fixed drug eruption and urticarial type showed higher frequencies than other types. Conclusion : Although there were some limitations in estimating the values of skin test and provocation test in this study, they still remain the most reliable methods for evaluating drug eruption.

      • KCI등재

        Flood Fill Mean Shift: A Robust Segmentation Algorithm

        강훈,이재용 제어·로봇·시스템학회 2010 International Journal of Control, Automation, and Vol.8 No.6

        In this paper, the flood fill mean shift (FFMS) is introduced. This algorithm is developed for robust segmentation by improving the mean shift (MS) through the flood fill (FF) technique, instead of relying on spatial bandwidth. Due to this exchange, the FFMS involves only one parameter, the range bandwidth, which is not sensitive and is able to acquire global characteristics. If the image parts af-fected by the illumination changes are sufficiently small and their boundaries are not clear, the illumi-nation effects do not influence the mode seeking procedure of the proposed FFMS. To prove the use-fulness and the validity of our algorithm, we present several experiments and analysis of the results.

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