• 한국학교보건학회지
• /
• 제32권3호
• /
• pp.165-174
• /
• 2019

Purpose: The purpose of this study was to identify the influence of eHealth literacy on health promoting behaviors, thereby providing basic data for the development of interventions for health promoting behaviors among university students. Methods: Data were collected from 242 university students aged 19 and over in a university located in K province in South Korea. Participants responded to structured questionnaires in September 2018. eHealth literacy and health promoting behaviors were measured by eHealth Litaracy (EHL) and a translated version of the Health Promoting Lifestyle Profile (HPLP-II), respectively. The correlation between eHealth literacy and health promoting behaviors were analyzed using Pearson's correlation, and multiple regression analysis was carried out to examine the influence of eHealth literacy on health promoting behaviors. Results: The participants had a moderate level of eHealth literacy with the greatest score recorded in the sub-domain of functional eHealth literacy and the lowest in the sub-domain of critical eHealth literacy. Female students and students who majored in healthcare had higher levels of eHealth literacy than male students and those with non-healthcare majors. The degree of health promoting behaviors was moderate or lower with the highest score being in the sub-domain of interpersonal support and the lowest in the sub-domain of health responsibility. Health promoting behaviors had significant relationships with eHealth literacy, exercise hours, subjective health status, and health concerns. Multiple regression analyses revealed that the participants engaged more in health promoting behaviors when they had greater eHealth literacy (β=.18, p<.001), interest in their own health (β=.33, p<.001), exercise hours (β=.18~.23, p<.001), and subjective health status (β=.17~.18, p=.007~.031). Conclusion: In order to facilitate health promoting behaviors of university students, interventions for health promoting behaviors need to be developed including strategies to improve competencies relevant to critical eHealth literacy and to increase exercise hours.

• 한국축산식품학회지
• /
• 제18권4호
• /
• pp.292-300
• /
• 1998

This study was undertaken to determine the influence in the Z-disk domain of titin on the tenderization of meat by the structure change of myofibrillar Z-disks during post-mortem aging. After weakening the structure of Z-disks, the Z-disk region was splitted. As the results, myofibrils were fragmented by mechanical strength. Using indirect immunofluorescence microscopy, we show that the Z-disk domain of titin was disappeared from myofibrils in this period. There phenomenon were also shown by treating myofibrils with a solution containing 0.1mM $Ca^{2+}$. We conclude that change in Z-disk domain of titin is directly effected on the tenderization of meat during post-mortem aging and these change is due to manily calcium ions.

• Earthquakes and Structures
• /
• 제6권3호
• /
• pp.251-266
• /
• 2014

Dynamic analyses for a suite of ground of motions were conducted on concrete gravity dam sections to examine the earthquake induced stresses and effective damping. For this purpose, frequency domain methods that rigorously incorporate dam-reservoir-foundation interaction and time domain methods with approximate hydrodynamic foundation interaction effects were employed. The maximum principal tensile stresses and their distribution at the dam base, which are important parameters for concrete dam design, were obtained using the frequency domain approach. Prediction equations were proposed for these stresses and their distribution at the dam base. Comparisons of the stress results obtained using frequency and time domain methods revealed that the dam height and ratio of modulus of elasticity of foundation rock to concrete are significant parameters that may influence earthquake induced stresses. A new effective damping prediction equation was proposed in order to estimate earthquake stresses accurately with the approximate time domain approach.

• 대한지구과학교육학회지
• /
• 제8권3호
• /
• pp.346-354
• /
• 2015

The purpose of this study was to be a help with designing science curriculum and developing science programs for the science gifted students by comparing their preferences about science class forms and class environments between science gifted students and normal students. For this study, 2 classes of science gifted students and 5 classes of normal students in 4th, 5th grade joined in this survey and their preferences about science class forms and class environments were checked using questionnaire. As a result, the following findings were obtained. First, in the area of class form, from comparing their preferences about teaching content domain, science gifted students showed meaningful higher preferences in all factors such as clarification, structuralization, thinking of high level and diversification. In comparing their preferences about teaching process domain, science gifted students also showed meaningful higher preferences in all factors such as diversification and self directed learning. Second, in the area of class environment, from comparing their preferences about classroom domain, science gifted students showed meaningful higher preferences in all factors such as teacher's support and rule and organization. In comparing their preferences about mentality domain, science gifted students also showed meaningful higher preferences in all factors such as influence of friends and parents. Third, in science gifted students, from comparing their preferences by gender about science class forms and class environments, female students showed meaningful higher preferences in factors of clarification. And in other factors females showed similar preference tendency with male students. In normal students' comparing, female students showed meaningful higher preferences in factors of teacher's support. And male students showed meaningful higher preferences in factors of high level thinking and influence of friend and influence of parents.

• International Journal of Naval Architecture and Ocean Engineering
• /
• 제3권1호
• /
• pp.20-26
• /
• 2011

A weakly nonlinear seakeeping methodology for predicting motions and loads is presented in this paper. This methodology assumes linear radiation and diffraction forces, calculated in the frequency domain, and fully nonlinear Froude-Krylov and hydrostatic forces, evaluated in the time domain. The particular approach employed here allows to overcome numerical problems connected to the determination of the impulse response functions. The procedure is divided into three consecutive steps: evaluation of dynamic sinkage and trim in calm water that can significantly influence the final results, a linear seakeeping analysis in the frequency domain and a weakly nonlinear simulation. The first two steps are performed employing a three-dimensional Rankine panel method. Nonlinear Froude-Krylov and hydrostatic forces are computed in the time domain by pressure integration on the actual wetted surface at each time step. Although nonlinear forces are evaluated into the time domain, the equations of motion are solved in the frequency domain iteratively passing from the frequency to the time domain until convergence. The containership S175 is employed as a test case for evaluating the capability of this methodology to correctly predict the nonlinear behavior related to wave induced motions and loads in head seas; numerical results are compared with experimental data provided in literature.

• 한국정보과학회논문지:소프트웨어및응용
• /
• 제36권10호
• /
• pp.851-860
• /
• 2009

최근 계산을 통한 단백질 상호작용 예측 기법 중, 단백질 쌍이 포함하고 있는 도메인들 사이의 관계에 중점을 둔 도메인 정보 기반 예측 기법들이 다양하게 제안되고 있다. 하지만, 다수의 도메인 쌍들이 상호작용에 기여하는 정도를 정밀하게 반영하는 계산 기법은 드문 실정이다. 본 논문에서는 단백질 상호작용에 있어 도메인 조합 쌍의 상호작용 영향력을 수치화하여 반영한 상호작용 중요도 행렬을 고안하고 이를 기반으로 한 단백질 상호작용 예측 시스템을 구현한다. 일반적인 도메인 조합 기법과 달리, 상호작용 중요도 행렬에서는 상호작용을 위한 도메인간의 협업 확률이 고려된 Weighted 도메인 조합과, 다수의 Weighted 도메인 조합 중 실제 상호작용 주체가 될 확률을 도메인 조합 쌍의 힘(Domain Combination Pair Power, DCPPW)으로 수치화한다. DIP과 IntAct에서 얻어온 S. cerevisiae의 단백질 상호작용 데이터와 Pfam-A 도메인 정보를 사용한 정확도 검증 결과, 평균 63%의 민감도와 94%의 특이도를 확인하였으며, 학습집단의 증가에 따른 안정적인 예측 정확도 향상을 보였다. 본 논문에서 구현한 예측 시스템과 학습 데이터는 웹(http://code.google.com/p/prespi)을 통하여 내려 받을 수 있다.

• 디지털콘텐츠학회 논문지
• /
• 제10권4호
• /
• pp.551-560
• /
• 2009

최근의 글로벌 경영환경, 그리고 디지털 미디어를 통한 전자상거래가 활성화되고 있는 상황 하에서 수출기업들의 브랜드 및 웹 도메인 개발에 관한 의사결정은 매우 중요한 전략적 선택이다. 특히 웹 도메인 개발은 기업의 브랜드 전략과 밀접하게 관련되어 있기 때문에 브랜드 개발 시 동시에 개발되는 경우가 대부분이다. 따라서 본 연구에서는 한국수출기업의 해외 브랜드 및 웹 도메인 개발 전략에 관한 수요조사결과를 토대로 수출브랜드전략의 결정요인을 탐색적으로 고찰하기위하여 실행되었다. 이를 위하여 본 연구에서는 브랜드전략 결정요인으로 수출경쟁력, 시장의 유사성, 환경의 불확실성으로 구분하고 브랜드 전략과의 관계를 회귀분석 하였다. 연구결과 한국수출기업의 경우에 기대한 바와 같이 수출경쟁력이 높을수록 OEM브랜드 수출비중이 낮고, 환경의 불확실성이 클수록 OEM브랜드 수출비중은 높은 것으로 나타났다. 그러나 시장의 유사성은 통계적으로 유의한 영향을 미치지 못한 것으로 나타났다. 자사브랜드 전략을 사용하고 있는 기업의 경우에도 수출경쟁력이 높은 기업일수록 글로벌브랜드를 선택하는 경향이 높고 환경의 불확실성이 클 경우에는 로컬브랜드 전략을 선택할 가능성이 높은 것으로 나타나 가설을 지지하였다. 그러나 시장의 유사성은 글로벌브랜드 전략 또는 로컬브랜드 전략과의 유의미한 통계적 관계를 보여주지 못했다.

• 한국경영과학회지
• /
• 제20권3호
• /
• pp.77-104
• /
• 1995

Intelligent Decision System support the decision analysis process in the managerial problems with decision analytic knowledge as well as domain specific knowledge. Influence Diagram has been one of the major knowledge representation in the intelligent decision system. In the development of intelligent decision system, knowledge acquisition is also known to be difficult. This paper suggests a developing tool using an influence diagram and Verbal Protocol Analysis which facilitates knowledge acquision for intelligent decision system. An ennvironmental decision making problem is used as an illustrative example and validation of the suggested developing tool is discussed. The suggested tool is very flexible to be expanded or applied to similar problems.

• Interaction and multiscale mechanics
• /
• 제2권4호
• /
• pp.353-374
• /
• 2009

A new seamless multiscale simulation was developed for coupling the continuum model with its molecular dynamics. Kriging-based Finite Element Method (K-FEM) is employed to model the continuum base of the entire domain, while the molecular dynamics (MD) is confined in a localized domain of interest. In the coupling zone, where the MD domain overlaps the continuum model, the overall Hamiltonian is postulated by contributions from the continuum and the molecular overlays, based on a quartic spline scaling parameter. The displacement compatibility in this coupling zone is then enforced by the Lagrange multiplier technique. A multiple-time-step velocity Verlet algorithm is adopted for its time integration. The validation of the present method is reported through numerical tests of one dimensional atomic lattice. The results reveal that at the continuum/MD interface, the commonly reported spurious waves in the literature are effectively eliminated in this study. In addition, the smoothness of the transition from MD to the continuum can be significantly improved by either increasing the size of the coupling zone or expanding the nodal domain of influence associated with K-FEM.

• 한국해양공학회지
• /
• 제32권5호
• /
• pp.333-340
• /
• 2018

This paper addresses the concept of the representative mean position, which was devised to improve the numerical efficiency of a time domain fatigue analysis of a mooring chain. To investigate the influence of an artificial offset of the floater on the fatigue of the mooring chain, a parametric study was performed on the moored FPSO under various combinations of offsets and environmental conditions. Tension time histories were calculated using the de-coupled analysis method, and fatigue damages were calculated to determine the influence of the offset. The parametric study was extended to a more realistic case to determine the actual effect of the representative mean position, where a comparison was made between the two different analysis results, one using the representative mean position and the other one using the actual mean position. It was confirmed that the application of the representative mean position guaranteed the conservatism of the fatigue damage with the enhanced numerical efficiency in the time domain fatigue analysis.