• 한국군사과학기술학회지
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• 제2권2호
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• pp.52-60
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• 1999

By implementing the Systems Engineering process for the aircraft preliminary design, functional analysis study is performed, hence Functional Interface Data Flow(FIDF) and Functional Flow Block Diagram(FFBD) are generated. Based on FIDF and FFBD, allocable and non-allocable design/performance/RM＆S requirements are allocated to the appropriate levels. Weight and cost tracking and design margin management methodologies are studied and implemented for the balanced aircraft design.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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• pp.214.1-214.1
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• 2011

In this work, the electrochemical properties of the surface treated multi-walled carbon nanotubes (MWNTs) are investigated for supercapacitors. Nitrogen- and oxygen functional groups containing MWNTs are prepared by nitrogen precursors and acidic treatment, respectively. The surface properties of the MWNTs are confirmed by X-ray photoelectron spectroscopy (XPS) and Zeta-potential measurements. The electrochemical properties of the MWNTs are investigated by cyclic voltammetry, impedance spectra, and charge-discharge cycling performance in 1 M $H_2SO_4$ at room temperature. As a result, these functionalized MWNTs lead to an increase in the specific capacitance as compared with the pristine MWNTs. It proposes that the pyridinic and pyridinic-N-oxides nitrogen species influence on the specific capacitance due to their positive charges, and thus an improved electron transfer at high current loads, since they are the most important functional groups affecting capacitive behaviors.

• 한국초전도학회:학술대회논문집
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• 한국초전도학회 1999년도 High Temperature Superconductivity Vol.IX
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• pp.405-408
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• 1999

A prototype of solenoidal superconducting magnet using Bi-2223/Ag multi-filamentary tapes was fabricated and tested to investigate its performance. The Bi-2223/Ag tapes were prepared by powder-in-tube method. The dimensions of magnet, which was stacked with 9 double pancakes, were 90 mm in height, 74 mm in outer diameter and 40 mm in clear core. The axial maximum magnet field at the center of the solenoidal magnet was about 0.12 T, and the critical current of coil conductor was about 9 A at 77.3 K.

• 한국전문물리치료학회지
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• 제12권2호
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• pp.58-72
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• 2005

The purposes of this study were to determine the effects of rehabilitation programs on functional performance of the lower extremities and whether additional therapeutic exercise with routine rehabilitative therapy improves functional performance more than just routine rehabilitative therapy by it self for inpatients who have suffered a stroke with below moderate severity within 3 to 6 months after the onset of the stroke. Fifty-eight subjects were divided into two groups. Group I was given routine rehabilitative therapy and group II was given additional therapeutic exercise along with the routine rehabilitative therapy. Each group received 6 weeks of rehabilitation. The timed get-up and go test (TUG), the Fugl-Meyer score (FMS), functional independence measure (FIM), functional reach (FR), gait velocity (GV), and the strength of knee extensor and flexor were selected to measure effect of rehabilitation programs. The main results were measured and analysed at baseline, 3 weeks, and 6 weeks after the start of the rehabilitation programs. The results revealed that all of functional performance of the lower extremities in 3 weeks after the start of the rehabilitation programs were significantly improved compared with before the rehabilitation programs in both groups. In 6 weeks, TUG, FIM, FR, GV, and the strength of knee extensor in group I, TUG, FMS, FIM, FR, GV, and the strength of knee extensor and flexor in group II were significantly improved compared with the results after 3 weeks. At 3 weeks after rehabilitation programs, group II made significantly greater gains in TUG, FR, GV, and the strength of the knee flexor compared to the group I. At 6 weeks, group II made significantly greater gains in TUG, FR, GV, and the strength of the knee extensor and flexor compared to the group I. In conclusion, rehabilitation programs for stroke patients within 3 to 6 months after stroke onset significantly contributed to improve functional performance of the lower extremities. It is desirable for improvement of functional performance of the lower extremities to perform additional exercise with routine rehabilitative therapy.

• 대한정형외과스포츠의학회지
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• 제4권2호
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• pp.109-115
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• 2005

목적: 본 연구의 목적은 슬관절의 외발 뛰기, 기능성 수행 평가의 유용성을 살펴보고 향후 기능 평가의 기준이 될 수 있는 한국 성인 남성의 평균값을 얻는데 있다. 연구대상 및 방법: 정상 성인 남성 40명을 대상으로 외발 뛰기(한번 뛰기, 세번 뛰기)와 3종 기능성 수행 평가(shuttle run, Carioca, Co-contraction test)등 총 5개 항목의 검사를 시행하였다. 피검자의 연령은 평균 28.4세었으며 Tegner activity score는 평균 6.2점, Lysholm score는 평 균 98.2점이었다. 각 검사 결과의 평균과 표준 편차를 구하였으며, 키, 몸무게, 연령과의 상관 관계, 우세 다리 (dominant limb)와 비 우세 다리(non-dominant limb)에서의 결과 차이, 뛰기 검사(hop test)와 기능성 수행 평가와의 상관 관계 등에 대하여 분석하였다. 결과: 검사한 5개 항목 모두 통계적으로 의미 있는 정규 분포를 하였으며, 키, 몸무게, 연령과는 상관 관계를 보이지 않았다. 외발 뛰기 검사는 우세 다리와 비 우세 다리에서 유의한 차이를 보이지 않았으며, 기능성 수행 평가와 유의한 상관 관계를 보였다(P<0.05). 결론: 3종 기능성 수행 평가는 전방 십자 인대 손상 환자의 기능 평가로 유용하며 본 연구의 결과는 정상 한국 성인 남성의 정상 기준 값으로 이용될 수 있을 것으로 판단된다.

• 한국통신학회논문지
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• 제35권7B호
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• pp.1050-1057
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• 2010

오늘날 네트워크에 대한 침해사고가 급증하고 있으며, 점차 증가하고 있는 인바운드 네트워크에 대한 공격도 함께 증가하고 있다. 이러한 공격에 대응하기 위해서 보안시스템의 개발이 지속적으로 이뤄지고 있지만, 인바운드 네트워크의 성능 감소의 문제가 발생하기 때문에, 성능 향상과 보안성 강화를 위한 모두를 고려한 보안시스템 개발이 시급한 실정이다[1]. 따라서 본 논문에서는 네트워크를 분할하여 보안등급에 따라 관리함으로써 성능을 향상 시키기 위한 보안클러스터링을 제안하고자 한다.

• 운동영양학회지
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• 제23권2호
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• pp.13-15
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• 2019

[Purpose] Functional beverages are a protective or enhancing factor influencing not only public health but also athletic performance. The purpose of this study was to highlight the new conditioning beverage of the Lactobacillus pentosus strain b240 (B240) with electrolytes or proteins, which strengthens immune functions to improve the quality of life. [Methods] ISeveral related studies systematically reviews three main issues associated with conditioning beverages: (a) utilization and availability of the functional beverage; (b) significance of B240 in immune strengthening; and (c) availability and application of conditioning drinks in the daily life and sports field. [Results] Intake of B240 led to greater enhancements, including blood T-helper, NK cell, IgA and IgG level in conjunction with strengthen immune functions. These results speculated that the practical application of B240 contained beverages on physiological health and performance. [Conclusion] BODYMAINTÉ, this novel conditioning beverage is expected biological utility responsible for improved sports performance as a functional drink and has potential health-related implications.

• Korean Chemical Engineering Research
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• 제50권6호
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• pp.1043-1048
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• 2012

본 논문에서는 전기이중층 커패시터(EDLC, Electrical Double Layer Capacitor)의 전극소재로 쓰이는 활성탄소의 안정화를 위해 산소함유관능기를 최소화하고 질소함유관능기의 도입을 통해 유기용액계의 전해질을 가지는 EDLC의 축전용량을 개선하는 연구를 하였다. 주사전자현미경(SEM, Scanning Electron Microscopy), 후리에 변환 적외선분광기(FTIR, Fourier Transform Infrared), 자동원소분석기(EA, Elemental Analysis), 보엠(Boehm) 적정법, 충 방전 테스트 등의 분석법을 이용하여 그 결과를 확인하였다. 산 처리를 통하여 산소함유관능기가 도입되고 요소처리를 통하여 질소함유관능기가 도입되었음을 확인하였다. 질소함유관능기 도입을 통하여 EDLC의 g 당 방전용량을 2 mA 상승시켰으며 빠른 속도로 최대 충 방전 성능을 달성하였다. 반면 산소함유관능기는 전해질 속의 전하가 탄소표면에 흡 탈착되는 것을 방해하기 때문에 낮은 방전용량을 보였고, 충 방전 횟수가 늘어남에 따라 방전용량의 큰 감소를 보여주었다.

• 대한물리치료과학회지
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• 제31권1호
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• pp.1-15
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• 2024

Background: This study was conducted to apply active release techniques to male youth basketball players to help improve physical development and damage prevention and improve performance through improved balance and functional movement. Design: Randomized control trial. Methods: The subjects included 33 youth basketball players who were randomly assigned to the experimental group (n=17) and the control group (n=16). For the experimental group, the active release technique was applied to the hip muscles, calf muscles, posterior thigh muscles based on the distribution of injuries surveyed in youth basketball players in the Korean Basksetball League. The Y-balance test and the functional reach test (FRT) were used to assess balance and the Functional Movement Screen (FMS) was used to assess functional movement. Interventions were conducted twice a week for 4 weeks at 40 minutes per session. The experimental group was the active release technique group, and static stretching, a common exercise therapy technique, and self-myofascial release using a foam roller were applied for 20 minutes. The control group received general exercise therapy and placebo active release technique. The placebo active release technique applies pressure only. results:The experimental group showed a greater improvement in balance, as evidenced by the FRT, compared to the control group, which received general exercise treatment. However, there was no statistically significant difference in improvement between the 2 groups. In the case of the experimental group, the difference in the Y balance test before and after the intervention was larger than that of the control group, but there was no statistically significant difference. Significant improvement was found in functional movement, as evidence by the FMS, for the trunk stability test (p < 0.05), in-line lunge test (p < 0.05), rotational stability test (p < 0.05), total score (p < 0.05). Conclusion: In this study, the active release technique improved the balance and functional movement of young basketball players more than general exercise therapy. The application of the active release technique is therefore expected to assist in physical development, prevent damage, and improve the performance of youth basketball players.

• 한국컴퓨터정보학회논문지
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• 제26권1호
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• pp.11-17
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• 2021

본 논문에서는 순수 함수형 언어로 작성된 쌍방시뮬레이션 알고리듬의 성능을 멀티코어 프로세서 컴퓨터에서 병렬화로 향상시키는 방법을 연구한다. 이 병렬화에 있어 핵심 아이디어는 순수 함수형 프로그램의 참조 투명성을 십분 활용하면 병렬화가 전혀 고려되지 않고 작성된 초기 구현으로부터 최소한의 수정만으로 성능 개선 효과를 기대할 수 있다는 것이다. 초기 구현과 병렬화 구현 둘 다 순수 함수형 언어인 하스켈로 작성되었다. 초기 구현을 병렬화할 때 변화는 아주 적어서 병렬화된 구현에서도 초기 구현의 프로그램 구조가 거의 그대로 유지되었다. 벤치마크를 통해 제시된 간단한 병렬화만으로도 초기 구현과 비교해 두 배 이상의 성능 개선을 확인했다. 또한, 병렬화와는 별개의 최적화 기법인 메모이제이션이 적용된 버전의 쌍방시뮬레이션 구현에도 같은 방식의 병렬화를 적용함으로써 마찬가지로 성능을 개선할 수 있음을 확인하였다.