• 한국운동역학회지
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• 제33권4호
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• pp.185-195
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• 2023

Objective: The purpose of this study is to improve TPI OnBaseU Power Test and golf performance by conducting CrossFit power training. Method: Three male golf players from University B participated in this study. They had 3 to 4 years of golf experience and participated in 8 weeks of CrossFit power training. Results: OnBaseU Power Test: There was a lot of improvement in Sit up throw (27.9%) and Chest pass (10.58%), but there was not much improvement in Baseline Toss (R5.9, L9.8%) and Vertical Jump (4.1%). Golf shot data: There was a very statistically significant difference in Club speed, Ball speed, and Total Length, which are related to speed, and there was no difference in Club path and Smash factor, which are related to accuracy and posture. Conclusion: CrossFit power training was effective in improving TPI OnBaseU Power Test and golf performance (Club speed, Ball speed, Total Length).

• Journal of information and communication convergence engineering
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• 제22권2호
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• pp.98-108
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• 2024

Scrypt is a password-based key derivation function proposed by Colin Percival in 2009 that has a memory-hard structure. Scrypt has been intentionally designed with a memory-intensive structure to make password cracking using ASICs, GPUs, and similar hardware more difficult. However, in this study, we thoroughly analyzed the operation of Scrypt and proposed strategies to maximize computational parallelism in GPU environments. Through these optimizations, we achieved an outstanding performance improvement of 8284.4% compared with traditional CPU-based Scrypt computations. Moreover, the GPU-optimized implementation presented in this paper outperforms the simple GPU-based Scrypt processing by a significant margin, providing a performance improvement of 204.84% in the RTX3090. These results demonstrate the effectiveness of our proposed approach in harnessing the computational power of GPUs and achieving remarkable performance gains in Scrypt calculations. Our proposed implementation is the first GPU implementation of Scrypt, demonstrating the ability to efficiently crack Scrypt.

• International Journal of Internet, Broadcasting and Communication
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• 제16권1호
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• pp.191-202
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• 2024

Self-efficacy is a major factor related to performance and needs to be improved in business and education field. This study explains the effectiveness of school career assistance to improve college students' self-efficacy. Furthermore, it demonstrates the moderating effects of grit and regulatory focus (promote and prevention). School career assistance is based on group support, and moderating variables in this paper are individual characteristics. In these group and individual dimensions, if the effectiveness of school career assistance varies depending on individual characteristics, schools will be able to establish self-efficacy improvement strategies more appropriate for individual students. School would understand individual characteristics such as grit and regulatory focus, then could make individual strategy for enhancing self-efficacy and performance. Hence, it is expected that the performance of school and student will improve through the self-efficacy improvement plan presented in this study.

• 한국화재소방학회논문지
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• 제28권3호
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• pp.72-79
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• 2014

본 연구는 119구급대에서 사용하는 주들것의 문제점을 확인하고 그 개선방안을 도출하는 것을 목적으로 한다. 주들것의 문제점 도출을 위하여 문헌분석, 설문조사법을 사용하였고, 개선지표의 도출을 위해 KJ법(가와기타 지로법, 친화도법), 그래프기법, 우선순위 행렬법을 활용하였다. 주들것의 문제점은 현재 구급자동차의 부품으로서 인식되는 점, 성능확인 기준이 미비한 점, 조작 중 구급대원 부상 및 환자사고가 발생하는 점으로 요약할 수 있었으며, 이를 개선할 수 있는 개선지표로는 조작편리성, 고성능, 다기능, 주행성, 내구성, 경량화가 도출되었다. 이 지표에 대한 상호연관성 분석 및 우선순위행렬법 적용 결과는 조작편리성 ${\rightarrow}$ 다기능 ${\rightarrow}$ 주행성 ${\rightarrow}$ 고성능 ${\rightarrow}$ 내구성 경량화 순으로 나타났다.

• 기술혁신학회지
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• 제13권1호
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• pp.44-67
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• 2010

국가 R&D사업은 적절한 예산 규모 산정이 어렵기 때문에 참고 가능한 해당 사업의 성과 및 평가정보가 적시에 지원될 경우 판단의 오류를 최소화 할 수 있을 것으로 기대할 수 있다. 그러나 현실적으로는 국가 R&D사업에 대한 성과평가 결과가 의도한 대로 충분히 활용되지 못하고 있는 실정인데, 그 이유로는 크게 두 가지 문제점을 들 수 있다. 첫째, 국가 R&D사업의 성과 및 평가 정보와 관련 예산정보가 적시에 연계 활용되지 못하고 있다. 둘째, 이를 지원하는 시스템간의 연계가 구현되어 있지 않다. 따라서 본 연구에서는 국가 R&D사업의 현황 분석을 신정부 출범 이전과 이후의 제도적, 시스템적 관점에서 고찰하였고 이를 통하여 국가 R&D성과평가와 예산 정보가 연계 가능하도록 개선 프로세스를 제안하고자 하였다.

• 한국의료질향상학회지
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• 제6권1_2호
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• pp.150-160
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• 1999

Background : Because hospitals had to faced with financial hardship, we have to have more effective hospital management. In this study, we tried to improve job performance and to reduce cost maintaining safety in fields of patients care. Methods : Central Supply Room(CSR) staffs taught strategy of material cost reduction to middle level managers and staffs 14 times. All staffs and voluntary service workers, working in 33 nursing units, participated in this activity. We developed questionnaire to check the degree of participate in cost reduction activity and job performance in CSR, and quality improvement in the wards. Two hundred questionnaires were distributed and 197 returned. Results : Because CSR staffs developed new items and every item was managed at each department, stocks of each department were reduced. Overall, by comparing before and after cost reduction activity, almost 1.2 billion won reduced for one year. Staffs' loyalty and spirits of cost reduction were improved by changing clothes and duty environment. Furthermore, these activity improved patients' satisfaction. Conclusion : We suggest that CSR activity in a university hospital contributes to improve job performance and to reduce cost without any problem in patient care.

• 한국전자파학회논문지
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• 제7권3호
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• pp.230-238
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• 1996

본 논문에서는 임펄스 잡음이 존재하는 레일리 페이딩 환경에서 다이버시티 기법에 의한 BFSK신호의 성능 개선치를 구하였으며 이를 가우스잡음의 경우와 비교하였다. Rayleigh 페이딩 환경하에서는 CNR 값이 클수록 임펄스 잡음의 영향에 관계없이 일정한 선호 성능에 수렴한 다는 것을 알았다. 또한 다이버시티 기법은 가우스 잡음뿐만 아니라 임펄스 잡음과 페이딩이 혼재하는 통신 환경 에서도 선호의 성능을 개선시킬 수 있음을 알았다. 또한 레일리 페이딩과 임펄스 잡음이 혼재하는 통신로 환경에 서 다이버시티 기법과 부호화 기법을 같이 사용하면 부호화 기법만을 사용한 경우에 비해 신호의 오율성능이 약 11[dB] 정도 개선 됨을 알았다.

• 대한전자공학회논문지TC
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• 제49권8호
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• pp.25-32
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• 2012

본 논문에서는 고속 시변 채널 OFDM을 위한 저복잡도 LS(Least Squares) 채널 예측의 성능 개선 방안을 제안한다. 저복잡도 LS 채널 예측을 위해 사용하는 CE-BEM(Complex Exponential-Basis Expansion Model) 채널 모델의 경우 채널 모델 자체의 문제점으로 인하여 채널 예측 성능 저하가 발생한다. 본 논문에서는 우선 시간 영역 윈도우를 이용하여 데이터 심볼에 의한 ICI(Interchannel Interference)의 영향을 제거한다. LS 채널 예측 결과에서 샘플을 취하여 윈도우의 영향을 제거한 후 특성이 채널 변화의 표현에 적합한 DPSS(Discrete Prolate Spheroidal Sequences)를 기저함수(basis function)로 하는 보간 (interpolation) 방식으로 채널 응답을 복원하여 CE-BEM의 문제점을 해결한다. 컴퓨터 모의실험을 통한 성능 확인 결과 제안된 채널 예측 방식은 기존의 방식과 비교하여 특히 고속 시변 채널에서 우수한 성능 개선 효과를 보여주며, 선택된 기저함수의 형태뿐만 아니라 기저함수의 개수의 설정이 성능을 크게 좌우하는 또 다른 요소임을 확인하였다.

• 한국태양에너지학회 논문집
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• 제30권1호
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• pp.50-60
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• 2010

Today, the amount of energy consumption in the university campuses is huge. The effort for the energy consumption reduction in university campuses is certainly needed by the following reason; first, contribution to the greenhouse gas discharge reduction demand. Second, energy cost reduction in university campus. Third, contribution to the improvement of the social awareness as the maximum higher educational institutions. The energy consumption analysis of current situation has to be executed for the energy consumption reduction in university campus. The energy reduction possibility in which it exists in university campuses can be understood through the energy consumption analysis. And the application is possible as fundamental data of the policy establishment for the effective energy reduction in university campuses. Especially, the best way to reduce the energy consumption in university campuses that is the energy consumption reduction of buildings. Accordingly, this study derived the plans for improving the performance of energy in the university building by analyzing case study, so this study analyzed the performance of energy for the university building through VE, a program for the analysis of building energy. Based on this result, this study classified the plans improving the efficiency of energy in university building into the plan for passive control and active control respectively, and suggested some concrete plans, and finally evaluated the performance of decreasing energy consumption for each plan.

• 한국수소및신에너지학회논문집
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• 제28권6호
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• pp.675-682
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• 2017

New government, the market for stationary fuel cell systems in domestic is expected to expand in line with the policy for expanding new and renewable energy. In order to promote and expand the domestic market for stationary fuel cell systems, it is required to do research and develop for cost reduction and efficiency improvement technologies through the localization of BOP. In this study, the safety performance including the power consumption, flow rate, noise and air-tightness of the domestic fuel booster blower and the foreign fuel booster blower was evaluated and the performance improvement of the domestic blower was confirmed. As a result of the power consumption measurement and the flow rate according to the back pressure of the A company 2nd prototype and B company, the values were 73 W, 27 LPM, and 55 W, 25 LPM. These results are attributed to the improvement of performance through design changes such as CAM angle and diaphragm material.