• 한국세라믹학회:학술대회논문집
• /
• 한국세라믹학회 2004년도 추계총회 및 연구발표회 초록집
• /
• pp.81.1-81.1
• /
• 2004

• 오토저널
• /
• 제6권4호
• /
• pp.62-69
• /
• 1984

• 한국수학교육학회지시리즈A:수학교육
• /
• 제21권1호
• /
• pp.35-38
• /
• 1982

• 한국전자현미경학회:학술대회논문집
• /
• 한국현미경학회 2001년도 제32차 추계학술대회
• /
• pp.60-62
• /
• 2001

• 건축사
• /
• 통권607호
• /
• pp.130-131
• /
• 2019

• 건축사
• /
• 통권642호
• /
• pp.32-33
• /
• 2022

• Korean Journal of Radiology
• /
• 제24권11호
• /
• pp.1057-1058
• /
• 2023

• Structural Engineering and Mechanics
• /
• 제16권6호
• /
• pp.731-748
• /
• 2003

In this paper a thick cylindrical shell with varying thickness which is subjected to static non-uniform internal pressure is analyzed. At first, equilibrium equations of the shell have been derived by the energy principle and by considering the first order theory of Mirsky-Herrmann which includes transverse shear deformation. Then the governing equations which are, a system of differential equations with varying coefficients have been solved analytically with the boundary layer technique of the perturbation theory. In spite of complexity of modeling the conditions near the boundaries, the method of this paper is very capable of providing a closed form solution even near the boundaries. Displacement predictions are in a good agreement with the calculated finite elements and other analytical results. The convergence of solution is very fast and the amount of calculations is less than the Frobenius method.

• 천문학회보
• /
• 제40권1호
• /
• pp.64.1-64.1
• /
• 2015

In the present study, we examine the dependence of solar proton peak flux at SOHO and STEREO on 3-D CME parameters (radial speed, angular width, and longitudinal angular separation between its source region and the magnetic footpoints of spacecraft). For this we consider 38 proton enhancements of 16 SEP events observed by SOHO, STEREO-A, and/or B from 2010 August to 2013 June. As a result, we find that the enhancements are strongly dependent on these three parameters. The correlation coefficient between proton peak flux and CME speed is about 0.42 for the cases the footpoints are located inside the lateral boundaries of angular widths, while there is no correlation for the events outside the boundaries. The correlation coefficient between peak flux and angular separation is -0.51. We find that most of strong proton events occur when their angular separations are closer to zero, supporting that most of the proton fluxes are generated near the CME noses rather than their flanks.

• 환경영향평가
• /
• 제17권5호
• /
• pp.299-309
• /
• 2008

Cumulative effects can be defined as impacts on environment which results from incremental impacts of a proposed project, which covers other past, present, and reasonably foreseeable future actions. The necessity of Cumulative Effect Assessment is that, when there are several projects near the project area, environmental effects of individual project can be larger or smaller than those of individual project without having projects nearby because of synergy, ascending and descending effects. This study was intended to help Environmental Impact Assessment practitioners identify spatial and temporal boundaries during the scoping stage. To do this, literature review of domestic and foreign legislations, guidelines, textbooks and papers related to Environmental Impact Assessment and Cumulative Effect Assessment was accomplished. This study suggests that continuous research be needed in order to identify spatial boundaries for other assessment fields and to develop methodologies for cumulative effect assessment.