• Journal of Electrical Engineering and Technology
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• 제7권2호
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• pp.151-156
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• 2012

The current study presents a zero-one integer programming approach to determine the minimum break point set for the coordination of directional relays. First, the network is reduced if there are any parallel lines or three-end nodes. Second, all the directed loops are enumerated to reduce the iteration. Finally, the problem is formulated as a set-covering problem, and the break point set is determined using the zero-one integer programming technique. Arbitrary starting relay locations and the arbitrary consideration of relay sequence to set and coordinate relays result in navigating the loops many times and futile attempts to achieve system-wide relay coordination. These algorithms are compared with the existing methods, and the results are presented. The problem is formulated as a setcovering problem solved by the zero-one integer programming approach using LINGO 12, an optimization modeling software.

• Archives of Reconstructive Microsurgery
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• 제21권2호
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• pp.81-85
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• 2012

Purpose: Saturday night palsy is a transient form of nerve palsy that occurs after a prolonged period of direct pressure on the course of radial nerve by one's own or spouse's head. Although commonly encountered, there have been only few studies concerning its convalescence. The purpose of this study is to predict the prognosis of Saturday night palsy based on the causes, time to recovery and degree of recovery. Materials and Methods: Retrospective study of 20 patients who were diagnosed compression radial nerve palsy was performed. The average age was 36.7 years old and the mean follow-up period was 19.6 months. We investigated sleeping hours as an indirect measure of nerve compression time, recovery of wrist and finger extension, DASH score on the monthly based follow up. Results: The mean sleeping hours was 5.8 hours and all patients showed full recovery of wrist and fingers extension with the mean duration of symptom for 3.2 months. DASH score was an average 1.53 at the last follow up and we found no statistical significance between the time to recovery and the sleeping hours. Conclusion: Complete natural recovery can be expected in compression radial nerve palsy in this study without correlation with sleeping time. Accurate diagnosis is important in order to avoid unnecessary therapeutic intervention and further study should be accomplished for clarifying the related prognostic factors in larger scale of the cases.

• Journal of Acupuncture Research
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• 제30권5호
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• pp.203-209
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• 2013

Objectives : The purpose of this study is to report the clinical effects of Korean medical treatment for Kienb$\ddot{o}$ck's disease. Methods : The patient was treated using acupuncture, electroacupuncture, herbal medicine, pharmacopuncture treatment, and other treatments including moxibustion, physical rehabilitation for 6 weeks. And we evaluated the patient through verbal rating scale(VRS), disability of the arm, shoulder and hand(DASH), range of motion(ROM). Results : After treatment, VRS is changed from 7 to 3, DASH is changed from 37.93 to 20.69. And ROM is changed from $60^{\circ}$ to $70^{\circ}$ in wrist flexion, and from $10^{\circ}$ to $15^{\circ}$ in radial deviation. Conclusion : These results suggest that Korean medical treatment is effective to the patient complaining pain and dysfunction.

• Archives of Reconstructive Microsurgery
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• 제21권1호
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• pp.1-7
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• 2012

Purpose: This retrospective study was to determine the functional results of patients who were amputated of their fingertip between patients who were treated with replantation and patients who were treated with thenar flap. Materials and Methods: From 2004 to 2007, we identified and operated 159 patients who were diagnosed with fingertip amputations. Of 159 patients, Eighty-two patients were treated by replantation (67 in men and 14 in women) and the mean age at the operation was 41 years (range, 15-68 years). Seventy-nine patients was treated with thenar flap(54 in men and 25 in women) and the mean age at the operation was 43 years(range, 21-70 years). We compared variables between two groups including, age, gender, diagnosis, duration of hospital admission, grip strength, two-point discrimination, Semmes Weinstein monofilament test, active range of motion (ROM) of the proximal and distal interphalangeal (PIP and DIP) joint, pain (or tenderness), paresthesia, cold intolerance, the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire, and finger for activities of daily living (ADLs). Results: The duration of admission was longer in Replantation group than in Thenar flap group(p=0.001). However, the grip strength (p=0.003) and Semmes Weinstein monofilament test (p=0.029) in the Replanation group were statistically superior to the Thenar flap group. The average DASH disability (p=0.003)/symptom score (p=0.007) and ADLs (p<0.001) in the Replantation group was statistically better. In addition, cold intoleranace test of Thenar flap group is worse than the Replantation group. Conclusion: This study demonstrate that fingertip replantation have demonstrated not only to obtain the best appearance but also to gain better functional outcome. However, it is impossible to perform replatation, the thenar flap can be limited alternative method for fingertip amputation in aspect of preservation of range of motion and hospitalization time.

• 대한약침학회지
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• 제23권4호
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• pp.247-251
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• 2020

Objectives: Ganglion cysts require a sustainable treatment that suppresses their frequent recurrence. This study aimed to explore the clinical effects of Scolopendra pharmacopuncture (SP) and electroacupuncture on ganglion cysts. Methods: We retrospectively reviewed the patient records and follow-up reports for 20 patients with wrist ganglion cysts who received SP and electroacupuncture from April 2016 to March 2017. The cyst diameter, recurrence, visual analog scale (VAS) scores for pain, the Korean version of the disabilities of arm, shoulder, and hand (K-DASH) score, and the Korean version of the patient-rated wrist evaluation (K-PRWE) score before and after treatment were noted. Results: After treatment, the cyst diameter decreased significantly from 13.61 ± 6.41 mm to 5.15 ± 6.18 mm (p < 0.001), and VAS score for pain decreased from 1.31 ± 1.77 to 0.41 ± 0.33 (p = 0.021). Further, the K-DASH score decreased significantly from 8.97 ± 12.66 to 2.21 ± 7.39 (p = 0.016), and score for the function subscale of K-PRWE decreased from 11.37 ± 4.48 to 9.1 ± 3.67 (p = 0.046). No recurrences were reported from the followed-up patients. Any complication related to SP or electroacupuncture was not observed, except mild rash, itching, and swelling at the injection site in four patients. Conclusion: Combination of SP and electroacupuncture may be effective in treating ganglion cysts; further prospective studies with large population are needed to clarify the effect of SP and electroacupuncture.

• 한국멀티미디어학회논문지
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• 제24권9호
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• pp.1211-1223
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• 2021

Internet of Things(IoT) services have increased the demand for connectivity among electronics devices. As a result, various types of novel wireless communication technologies have been standardized and developed. In this paper, we evaluate the performance of low power wireless communication technologies such as Bluetooth, IEEE 802.15.4, DASH 7, IEEE 802.15.4g, LoRa, and SigFox in various environments. This is the first experiment evaluating various low power wireless communication technologies in real testbed. We expect that the evaluation results will be useful data to other researchers in applying the IoT technology in the future.

• 대한정형외과학회지
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• 제52권1호
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• pp.15-24
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• 2017

목적: 척골 신경병이 동반된 주관절의 퇴행성 관절염에서 최소 절개 척골 신경 감압술과 동시 시행한 관절경적 변연 절제술의 효과를 알아보았다. 대상 및 방법: 2006년 5월부터 2014년 7월까지 43명을 대상으로 최소 절개 신경 감압술만 시행받은 18예를 1군, 관절경적 변연 절제술과 신경 감압술을 동시 시행받은 25예를 2군으로 나누어 분석하였다. 술 전과 술 후 6개월의 통증 점수, 관절 운동 범위, Mayo elbow performance score (MEPS), disabilities of the arm, shoulder and hand (DASH), McGowan grade, Bishop rating score를 분석하였다. 결과: 두 군 간의 통증 점수, 관절 운동 범위, MEPS, DASH 호전 정도는 차이가 없었다. McGowan grade는 각각 1예를 제외하고 모두 1등급 이상의 호전을 보였으나 2군이 유의하게 더 우수하였고(p=0.001), Bishop rating score도 2군이 유의하게 더 우수하였다(p=0.036). 결론: 척골 신경병이 동반된 주관절 퇴행성 관절염에 대하여 최소 절개 척골 신경 감압술과 동시에 시행한 관절경적 변연 절제술은 관절 기능 향상과 척골 신경 회복에 유용한 술식이다.

• 한국통신학회논문지
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• 제40권12호
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• pp.2511-2519
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• 2015

해운물류에서 컨테이너의 위치와 봉인 여부, 온도 정보 등 상태 정보를 전송하는 기술은 다수 개발되어 왔으나 전 물류환경에서 사용이 불가능 하거나 단순히 컨테이너의 정보만을 수신하여 전달하기 때문에 태그의 상태를 제어하는 등의 양방향 통신이 지원되지 않았다. 특히, 양방향 통신을 글로벌 해운물류 전 구간에서 지원하기 위해서는 태그를 식별할 수 있는 주소값이 관리되어야 한다. 이를 위해 433MHz 기반의 RFID를 개선하기 위한 연구는 "DASH 7"이라는 프로젝트 명으로 진행되었으나 근래에는 표준화나 개발참조문서 등의 진행이 더딘 상태로 더 이상 진행되지 않고 있는 실정이다. 이 논문에서는 RFID 태그에 가상 주소값을 부여하여 IP의 특징인 양방향 통신을 이용해 글로벌 해운물류에서 실시간 통신을 위한 능동형 IP-RFID 시스템 구성을 소개하고 이를 위한 처리과정 및 기능을 제안한다. 이 논문에서 제안하는 IP-RFID 시스템을 적용하면 해운물류 구간에서 실시간 상태 추적과 함께 태그의 제어에도 적용이 가능하다.

• Advances in Traditional Medicine
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• 제7권2호
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• pp.150-156
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• 2007

Bacopa monnieri is being used in the traditional system of medicine for a variety of ailments. In the present study, the ethanolic extract of Bacopa monnieri aerial parts has been studied for its wound healing activity using various models in rats. Significant increase in wound contraction and skin breaking strength were observed in the excision and incision wound models respectively. There was also significant increase in hydroxyproline content, DNA content, superoxide dismutase activity, catalase activity, glutathione level and decrease in the level of thiobarbituric acid reactive substances in the $12^{th}$ day post wounding tissue of experimental rats in the ethanol extract treated groups with respect to the control group. The effect of the extract was found to be comparable with the standard drug nitrofurazone. From the results it may be concluded that the plant Bacopa monnieri is endowed with significant wound healing activity, thereby justifying its use in the traditional medicine. Saponins may be responsible for the observed wound healing activity.

• Advances in Traditional Medicine
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• 제7권3호
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• pp.297-303
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• 2007

The ethyl acetate fraction (EAF) and n-butanol fraction (NBF) of ethanolic extract of Bacopa monnieri aerial parts were screened for hepatoprotective activity and in vivo antioxidant activity on ethanol-induced hepatotoxic rats. Ethyl acetate fraction was found to be more potent even though both the fractions were endowed with significant hepatoprotective activity. EAF and NBF were investigated for hepatoprotective activity in albino rats at 300 mg/kg, p.o. dose and compared with standard drug Silymarin (25 mg/kg, p.o.). Results show that both the fractions were effective in blunting ethanol-induced enhanced activities of serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, alkaline phosphatase, level of serum bilirubin (both total and direct), liver weight loss and was also effective in reducing ethanol-induced lipid peroxidation both in vitro and in vivo. Furthermore, the fractions could also enhance ethanol-induced suppressed activities of superoxide dismutase, catalase and decreased level of reduced glutathione. Results of hepatocellular damage caused by ethanol and its recovery by EAF and NBF, suggest that they might be considered as a potential source of natural hepatoprotective agents, which could be related to the free radical scavenging properties of saponins present in high concentration in the fractions.