• The Journal of Korean Physical Therapy
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• 제33권5호
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• pp.224-230
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• 2021

Purpose: The purpose of this study was to investigate the effects of the fascia distortion model (FDM), one of the fascia treatments, on unstable ankle subjects. This was done through the chronic ankle instability tool (CAIT) questionnaire on maximum isometric muscle strength, proprioception, dynamic balance, and maximum angle. Methods: An experiment was conducted using the chronic ankle instability tool questionnaire on males and females in their twenties who suffered from ankle instability. Before the experiment, maximum isometric strength, proprioceptive, dynamic balance, and maximum angle were measured. The fascia distortion model was applied and then measurements were taken again to compare and analyze the changes. Analysis was carried out using the paired t-test. Results: After applying the fascia distortion model, maximum isometric strength, proprioceptive, dynamic balance, and maximum angle significantly improved (p<0.05). Conclusion: This study found that the fascia distortion model method was effective in improving maximum isometric strength, proprioceptive, dynamic balance, and maximum angle. The results suggest that the fascia distortion model method is a new intervention that could be used for subjects with chronic ankle instability.

• 한국해양공학회지
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• 제28권2호
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• pp.133-139
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• 2014

Offshore wind turbines have been constructed extensively throughout the world. These turbines are subjected to approximately $10^8$ horizontal load cycles produced from wind, waves, and current during their lifetimes. Therefore, the accumulated displacement of the foundation under horizontal cyclic loading has significant effects on the foundation design of a wind turbine. Akili(2006) and Achmus et al.(2009) performed cyclic triaxial tests on dry sands and proposed an empirical model for predicting the accumulated plastic strain of sands under long-term cyclic loading. In this study, cyclic triaxial tests were performed to analyze the cyclic loading behaviors of dry sands. A total of 27 test cases were performed by varying three parameters: the relative density of the sands, cyclic load level, and confining stress. The test results showed that the accumulated plastic strain increased with an increase in the cyclic load level and a decrease in the relative density of the sand. The confining stress had less effect on the plastic strain. In addition, the plastic strain at the 1st loading cycle was about 57% of the accumulated strain at 1,000 cycles. Finally, the input parameters of the empirical models of Akili(2006) and Achmus et al.(2009) were evaluated by using the relative density of the sand and the cyclic load level.

• Earthquakes and Structures
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• 제17권6호
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• pp.635-647
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• 2019

Tests and theoretical studies for seismic responses of a transmission tower-line system under coupled horizontal and tilt (CHT) ground motion were conducted. The method of obtaining the tilt component from seismic motion was based on comparisons from the Fourier spectrum of uncorrected seismic waves. The collected data were then applied in testing and theoretical analysis. Taking an actual transmission tower-line system as the prototype, shaking table tests of the scale model of a single transmission tower and towers-line systems under horizontal, tilt, and CHT ground motions were carried out. Dynamic equations under CHT ground motion were also derived. The additional P-∆ effect caused by tilt motion was considered as an equivalent horizontal lateral force, and it was added into the equations as the excitation. Test results were compared with the theoretical analysis and indicated some useful conclusions. First, the shaking table test results are consistent with the theoretical analysis from improved dynamic equations and proved its correctness. Second, the tilt component of ground motion has great influence on the seismic response of the transmission tower-line system, and the additional P-∆effect caused by the foundation tilt, not only increases the seismic response of the transmission tower-line system, but also leads to a remarkable asymmetric displacement effect. Third, for the tower-line system, transmission lines under ground motion weaken the horizontal displacement and acceleration responses of transmission towers. This weakening effect of transmission lines to the main structure, however, will be decreased with consideration of tilt component.

• 한국지반공학회논문집
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• 제29권3호
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• pp.29-40
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• 2013

본 논문에서는 얕은기초를 가지는 단자유도 구조물의 지진시 응답특성을 시간영역 비선형 유한차분해석을 이용하여 살펴보았다. 해석결과는 중력가속도 20g에서 시행된 동일한 제원을 가지는 동적원심모형실험 결과를 통하여 검증되었다. 검증결과 실험과 해석의 통제운동지점 경계조건 차이에서 발생하는 차이는 지반의 비선형 거동특성으로 발생하는 이력감쇠에 지반의 감쇠비를 추가하여 감소시킬 수 있었다. 이로부터 얻어진 구조물과 지반에서 계측된 가속도 시간이력 및 주파수대역 응답곡선 모두 유사한 결과를 나타내어, 시간영역 비선형 유한차분해석을 통한 지반-구조물 상호작용 해석의 신뢰성을 확보할 수 있었으며, 향후 동적원심모형으로 계측이 어려운 구조물의 잔류변위, 작용토압 등을 효과적으로 판단할 수 있을 것으로 사료된다.

• 디지털융복합연구
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• 제15권8호
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• pp.423-433
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• 2017

이 연구는 체육인재 경력현황과 분석을 통해 체육인재의 경력유형별 역량모델을 개발하는 데 있다. 이를 위해 체육인재는 체육행정, 심판, 지도자, 스포츠정보분석가, 글로벌 스포츠인재로 제한하였고, 문헌분석, 경력개발 유형 및 경력경로 가이드 설계, 경력유형별 인터뷰를 연구방법으로 활용하여 전문가 적합성 검토를 거쳐 다음과 같은 연구결과를 도출하였다. 첫째, 연구 결과 공통역량, 전문역량, 글로벌 전문역량으로 구분되었으며, 공통역량은 글로벌, OA활용 등 6개, 전문역량은 5개 경력유형별로 29개, 글로벌 전문역량은 2개로 국제스포츠인재 대상 스포츠외교, 국제협회 및 연맹진출 준비로 구성되었다. 둘째, 모든 역량에는 역량정의 및 행동지표가 함께 개발되었으며 향후 체육인재 역량 수준 진단 및 역량기반 경력개발 아카데미 교육과정 수립에 활용할 수 있을 것이다.

• 한국소음진동공학회논문집
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• 제17권4호
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• pp.317-323
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• 2007

Non-contact underwater explosions against surface ships could cause extensive equipment damage and render the ship inoperative. As an analytical method, DDAM(dynamic design and analysis method) is used for ship shock design. In this paper, in order to verify the finite element model of large shipboard equipment, modal test of equipment was performed. Major objective of this paper is to describe shock analysis methodology for large shipboard equipment attacked to the top and bottom foundations.

• International Journal of Internet, Broadcasting and Communication
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• 제16권1호
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• pp.92-98
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• 2024

This meta-analysis systematically reviewed studies on mirror therapy focused on arm and hand function in stroke patients, aiming to comprehensively assess the efficacy of mirror therapy interventions and furnish empirical support for its potential application and future development in the context of stroke rehabilitation. A rigorous search for articles published in international journals up to the year 2022 was conducted. Various assessment tools were employed to calculate effect sizes, evaluating the impact of mirror therapy on arm and hand function in stroke patients. Utilizing a random-effects model, mean effect sizes were determined, yielding a total effect size of 0.545. The effect sizes for the Brunnstrom Recovery Stage (BRS), Box and Block Test (BBT), Modified Barthel Index (MBI), Fugl-Meyer Assessment (FMA), and grip strength test were 0.957, 0.596, 0.490, 0.488, and 0.417, respectively. In summary, we suggest that mirror therapy engenders positive changes in functional recovery among stroke patients, establishing a foundation for its tailored clinical application based on individual subject characteristics.

• 디지털콘텐츠학회 논문지
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• 제18권3호
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• pp.457-463
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• 2017

주문형 비디오 서비스는 방송사 입장에서 기존 수신료와 광고 기반의 수익모델 외에 추가적인 수익모델을 제공하기 때문에 각 방송사들은 자신만의 주문형 비디오 서비스를 개발하고 매출 증대를 위하여 빈번하게 개선 작업을 수행하고 있기 때문에 개발업체는 주문형 비디오 서비스 개발의 효율성을 높이는 방법을 모색하고 있다. 본 연구는 이와 같은 개발업체의 요구를 근거로 주문형 비디오 서비스 개발에 피처지향 분석모델을 적용하기 위한 기반 연구를 수행하였다. 피처지향 분석모델은 다 수의 사례연구들을 통해 선택적 기능들이 많은 소프트웨어의 사용자 요구사항 분석에 효율적인 방법으로 인정받고 있다. 본 논문은 미국 카네기 멜론대학 SEI에서 개발한 FODA (Feature-Oriented Domain Analysis)를 활용하여 주문형 비디오 서비스의 피처모델을 개발하고, 피처모델에서 규명된 피처들과 피처들 간 논리적 관계를 바탕으로 주문형 비디오 서비스의 기능들을 명세하고, 그 기능들을 테스트할 수 있는 테스트케이스들을 설계하였다. 이런 일련의 연구는 주문형 비디오 서비스 개발에 피처지향 분석모델을 적용하기 위한 토대를 이룬다.

• 품질경영학회지
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• 제44권2호
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• pp.277-296
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• 2016

Purpose: Propose model to diagnose and assess National Defense Industry and quality management by investigating and analyzing established standard model. Methods: Research on established internal model including MB, EQA and JQA model and make standard index for quality index extraction and quantitative index to test objectively for internal state. Results: Extract advantage and disadvantage by performance of National Defense Industry level diagnose and build foundation for quality management policy and road map. Conclusion: Due to result of diagnostic assesment of quality management of national defense industry, dependability, SCQM and safety part shows vulnerability and require improvement and support.

• Journal of Information Technology Applications and Management
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• 제23권4호
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• pp.117-125
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• 2016

Software reliability in the software development process is an important issue. In infinite failure non-homogeneous Poisson process software reliability models, the failure occurrence rates per fault. can be presented constant, monotonic increasing or monotonic decreasing pattern. In this paper, the reliability software cost model considering decreasing intensity function was studied in the software product testing process. The decreasing intensity function that can be widely used in the field of reliability using power law process, log-linear processes and Musal-Okumoto process were studied and the parameter estimation method was used for maximum likelihood estimation. In this paper, from the software model analysis, we was compared by applying a software failure interval failure data considering the decreasing intensity function The decreasing intensity function model is also efficient in terms of reliability in the arena of the conservative model can be used as an alternating model can be established. From this paper, the software developers have to consider life distribution by preceding information of the software to classify failure modes which can be gifted to support.