• Elastomers and Composites
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• 제41권1호
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• pp.40-48
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• 2006

고무는 금속 및 플라스틱 재료와 달리 작은 하중에서도 큰 변형이 발생되며, 높은 변형 구간에서 탄성특성을 보이는 특징이 있다. 특히 충격흡수 특성이 금속 및 플라스틱보다 우수하므로 제진 및 충격 완충구조물로 널리 활용되고 있다. 충격하중을 받는 고무 구조물의 특성을 평가하기 위하여 자유 낙하형 충격시험기를 이용하여 충격실험을 실시하였으며, ABAQUS/Explicit를 이용하여 유한요소 해석을 수행하였다. 고무의 동강성은 충격펄스의 최대변형량과 충격지속시간으로부터 얻어진 진폭과 주파수를 적용하여 동특성 시험을 수행하고 WLF모델을 적용하여 높은 주파수 대역의 동강성을 예측하였다. 실험을 실시한 $0.3{\sim}l.5J$의 충격에너지 영역에서는 고무의 경도가 증가되면 충격흡수율이 감소되며, 충격에너지가 커질수록 충격흡수율은 감소하는 경향을 나타내었다.

• 한국게임학회 논문지
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• 제21권5호
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• pp.105-114
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• 2021

본 연구에서는 '타격감'에 대한 게임 요소 중 시각적인 부분인 게임 캐릭터의 동작 애니메이션을 분석해 보았다. 분석을 위해 선정한 게임은 '타격감'이 약하다고 생각되는 아케이드 게임 속 캐릭터의 동작을 중점적으로 분석하고 원인을 찾아보았다. 또한 '타격감'이 향상되었다고 평가를 받는 의 가정용 이식작의 캐릭터 동작을 아케이드 버전과 비교해서 어떠한 차이점이 있는지 분석해 보았다. 분석 결과 아케이드 버전에서 타격감이 미약했던 이유는 주로 타격 및 피격 동작의 잘못된 타이밍과 판정에서 비롯된 것이었으며, 동시에 물리적인 반응과 경직, 카메라 연출 및 타격 이펙트가 보완되면 타격감 향상에 유의미한 영향을 미칠 수 있다는 걸 알 수 있었다.

• Bulletin of the Korean Chemical Society
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• 제12권1호
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• pp.52-57
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• 1991

To find optimum conditions necessary in converting physical properties of any resin into those of others, eleven kinds of HIPS (High-Impact Polystyrene) resins were prepared. First physical properties of eleven samples divided into three groups are analyzed by a torque rheometer (named Plasti-Corder, Model No.: PLD 651) and GPC (Gel Permeation Chromatography), and then optimum conditions on conversion among samples are obtained by calculation from computer simulation so that any sample subjected to each group can show physical properties of other samples in its group. Even though the kind of plasticizer of any sample is different with others in its group, once optimum conditions on conversion among samples are met, it is found that physical properties of any sample are identical or similar to those of others in each group.

• Advances in nano research
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• 제14권3호
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• pp.273-284
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• 2023

Combating the worldwide environmental threat of plastic waste pollution has become a priority. Plastic pollution has the potential to impact land, rivers, and seas, since many marine and terrestrial organisms have perished as a result of plastic's non-biodegradability and soil dangers. For this consumption, it seems required to manufacture and use new renewable resources. Renewable materials for diverse applications have been created utilizing nanotechnology, which may replace conventional materials for children's activities and sports equipment. This study investigates and suggests that nanotechnology-based materials be replaced with conventional materials to save the environment in manufacturing equipment for children's physical activities. On the basis of the mechanical sciences, a stability study of the bending behavior of small-scale structures will be performed for the various recommended materials.

• The Journal of Korean Physical Therapy
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• 제32권1호
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• pp.21-28
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• 2020

Purpose: This study identified the effects of physical therapists on the quality of life when applying exercise-based movement techniques to breast cancer survivors. Methods: To conduct meta-analysis, 186 RCT studies were searched in five databases (RISS, Pubmed, CINAHL, Medline, and Cochrane Library), without limitation, for the year of publication, and papers published in April 2018 were selected. Four studies met the inclusion criteria and were selected for meta-analysis based on the risk of bias. The basic demographic data, athletic characteristics, and outcome data were extracted from all included clinical trials. The data were analyzed using the RevMan 5.2 program. Results: As a result of meta-analysis, exercise-based movement techniques applied by the control group (Pilates, yoga, tai chi, and qigong) or physical therapists showed no significant difference in the impact on the quality of life of breast cancer survivors. Conclusion: In this study, exercise-based movement techniques mediated by control groups or physical therapists showed no significant difference in the quality of life of breast cancer survivors, but the types and duration of exercise in each study varied, and the number of subjects was small. Considering randomized studies, more randomized studies will be needed to draw conclusions.

• 대한물리의학회지
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• 제18권3호
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• pp.73-84
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• 2023

PURPOSE: This study analyzed the impact of AI and biosensors on physical therapy, identifying the stage of customized technology development and future prospects. AI and biosensors improve the efficiency, establish customized treatment plans, and expand patient treatment opportunities. The study employed a literature review by searching databases and collecting research. METHODS: This study searched various databases related to the topic, collected existing research, papers, and reports, evaluated the literature, and summarize the results. RESULTS: Exercise therapy utilizing artificial intelligence can provide personalized and optimal exercise plans while monitoring rehabilitation progress. In addition, biosensors such as EMG sensors and accelerometers can monitor the individual progress in physical therapy, particularly in stroke patients, which can help improve physical therapy strategy and promote patient recovery. CONCLUSION: This study suggested that artificial intelligence can be applied in many areas of physical therapy, such as exercise therapy, customized treatment plans, rehabilitation and management, pain management, neuro rehabilitation, and auxiliary devices. Using AI technology, it is possible to analyze and improve exercise and posture, retrain the central nervous system, establish customized treatment plans for individual patients, predict and compare patient progress before and after treatment, and provide customized pain analysis and treatment methods. In addition, AI can provide neuro rehabilitation programs and customized auxiliary devices.

• 한국군사과학기술학회지
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• 제12권2호
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• pp.152-158
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• 2009

In this paper, the right arm was modelled by muscle-skeleton elements to obtain the behavior of right arm of human under impact condition, where physical and geometrical properties of human body such as Young's modulus, shear modulus, cross sectional area, length, density, moment of inertia and position were defined. Based on the numerical model of the right arm, the impact response of the right arm was obtained. By the comparison with the experimental results, the model of the right arm was verified.

• 교육시설
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• 제15권4호
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• pp.14-25
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• 2008

The Purpose of this study is to find out the renewal methods of Dae-jun railway station areas, focusing on the domestic/foreign case studies of the railway station areas and the possibility of the Industry-University-Institute collaboration in this area. As a result, this study shows that the revitalization for the impact area around rail transit station in the aspect of urban spatial structure, mixed land use, type of facilities and exchanging transit system of mass traffic etc, as well as such non-physical aspects as Industry-University-Institute collaboration and administrative planning. It does so by strengthening ties between hardware and software studies of urban planning and University Facilities planning. Finally this study suggested the strategy for the renewal of impact area around the rail transit stations.

• International journal of advanced smart convergence
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• 제8권1호
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• pp.196-203
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• 2019

We have reviewed the potential impact of blockchain technology on the music industry by analyzing the views of academia and the industry experts. The music industry had rapid changes from the physical market to the digital market in the past decades. The consumers download and stream music online and mobile during the digital dominant market. While streaming music has been recently growing at a fast rate, fair distribution of revenue to the artists continues to be an issue. Some industry experts believe that the issue of fair distribution of revenue to the artist may be resolved using blockchain technology, while some are skeptical about the application or the duration of impact. The blockchain may enhance speedier payment using smart contracts, provide additional revenue and promote the music if excellent fan support is achieved. The positive impact on the music industry may only be possible if there are detailed consideration of the industry and careful understanding of the customers.

• 한국산학기술학회논문지
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• 제13권10호
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• pp.4703-4710
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• 2012

본 연구는 지속적인 생활스포츠 참여자의 사회적 성숙이 신체적 정신적 건강에 미치는 영향을 알아보고자 시행하였다. 대상자는 지속적으로 생활체육프로그램에 참가하고 있는 강원도 거주 직장인들로써 2011년 11월 7일부터 25일까지 편의추출법을 이용하여 190명을 설문조사하였고 SPSS WIN 18.0 프로그램을 활용하여 빈도분석과 측정도구의 신뢰도 및 요인분석 실시로 조사 대상자의 일반적 특성을 조사(하고), 각 요인에 대한 기술통계분석과 변수간의 관계를 위한 상관관계 다중회귀분석을 실시하였다. 직장인의 지속적인 생활스포츠 참여로 인한 사회적 성숙은 신체적 정신적 건강에 유의한 차이가 있었다. 지속적인 생활스포츠 참여가 직장인의 신체적 건강과 정신적 건강 간의 상관관계가 있는 것으로 나타났다. 그러므로 직장인들에게 지속적인 생활스포츠 참여 기회를 부여하는 것이 필요하다.