• 지구물리
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• 제6권2호
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• pp.57-69
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• 2003

In this paper the theoretical method to analyse the pore water pressures in the bed under the oscillating water pressure is developed. In the former researches the validity of the theoretical treatment for the one-dimensional problem has been verified. However, the one-dimensional treatment is not sufficient to obtain the precise information concerning the many practical problems. From this point of view, in this study, we derive the fundamental equations for the general three-dimensional sand layer under the oscillating water pressure. The validity of this theoretical method is verified by experiments for the two-dimensional problems.

• The Journal of Asian Finance, Economics and Business
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• 제8권8호
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• pp.21-28
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• 2021

The purpose of this study is twofold. First, this paper argues that a theoretical lens that can connect three crucial concepts is often missing when it comes to assessing the success or failure of corporate reputation in terms of corporate environmental responsibility. These three concepts include the legitimacy of environmental disclosure information, stakeholder interest in corporate environmental responsibility, and the relationship between corporate environmental practices and disclosure. The second purpose is to investigate the roles of transparency and systemic thinking in corporate environmental responsibility and disclosure that could help to connect the information from environmental disclosure to internal information in firms, thereby minimizing conflicting accountabilities and increasing stakeholder engagement in environmental disclosure. Rather than conducting an empirical study, the author has followed a theoretical examination of legitimacy, stakeholder, and stewardship theories. This study, thus, suggests the retention of many theories (e.g. legitimacy, stakeholder, and stewardship) to study and explain the relationship of corporate environmental practices, environmental disclosure, and corporate reputation.

• 한국안전학회지
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• 제23권4호
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• pp.67-71
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• 2008

Formwork is a temporary structure that supports its weight and that of fresh concrete as well as construction live loads. Slab formwork consists of sheathing, stringer, hanger and shore. In construction site, pipe supports are usually used as shores which are consisted of the slab formwork. In this study, compressive strength of 80 pipe supports was measured by knife edge test and plate test. Buckling load of pipe supports was analyzed by structural analysis program(MlDAS). Theoretical buckling load with/without initial deformation was got by theoretical analysis. According to these results, buckling load which was analyzed by structural analysis program(MlDAS) was larger than compressive strength of knife edge test and plate test. Theoretical buckling load without initial deformation was larger than compressive strength of knife edge test and plate test. But Theoretical buckling load with initial deformation was lower than compressive strength of knife edge test and plate test. Initial deformation equation for test method according to the pipe support length was suggested. Therefore, the present study results will be used to design the slab formwork safely.

• 한국콘텐츠학회논문지
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• 제16권4호
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• pp.569-581
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• 2016

본 연구에서는 상호주관성에 대한 연구경향성과 심리치료로서의 임상적 의미에 대하여 이론적으로 탐구하고자 하였다. 이를 위해 본 연구는 심리치료에서의 상호주관성이 어떻게 중요한지에 대한 이론적 개념에 대해 탐구하였으며, 구체적으로 살펴보면 첫째, 상호주관성의 개념 및 연구경향성 과 둘째, 발달과정으로서의 상호주관성, 셋째, 애착과 상호주관성, 넷째, 심리치료에서의 상호주관성으로 나누어 면밀히 살펴보고자 하였다. 본 연구를 통해 인간의 발달에서 상호주관성이 어떠한 영향을 미치고, 심리치료 분야에서 구체적으로 어떻게 적용될 수 있는지 그 이론적인 기초와 근거를 마련하는데 활용될 수 있을 것이다.

• 한국IT서비스학회지
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• 제6권1호
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• pp.101-126
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• 2007

This study aims to construct the integrative performance evaluation model of informatization programs. In order to achieve the purpose of research, first of all, the three major theoretical paradigms (technical/functional, economic/financial, and interpretive/alternative paradigms) are comparatively analyzed concerning their philosophical and methodological perspectives. Also, a number of important studies and research model in the area of IS (Information Systems) evaluation are critically reviewed. And then actual problems and limitations on the process of implementing IS performance evaluation are sought through investigating domestic and foreign practices. Based upon theoretical and practical review of informatization evaluation and logical reasoning, the components of ideal performance evaluation scheme for informatization program are derived, and the integrative performance evaluation model which can comprehensively represent the relationship among the components is conceptually proposed. For researchers, this study provides the theoretical basis for reasonably deriving the performance variables of informatization programs and empirically validating the performance of managing informatization programs. And in real world, the results of this study are very likely to contribute to presenting the practical guideline for desirably implementing performance evaluation of informatization programs.

• 대한화학회지
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• 제55권3호
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• pp.354-363
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• 2011

3개의 적색 발광 Ir(III) 착물들인 $(fpmqx)_2Ir$(L) {fpmqx=2-(4-fluorophenyl)-3-methyl-quinoxaline; L=triazolylpyridine (trz) (1); L=picolinate (pic) (2) and L=acetylacetonate (acac) (3)}의 전자 구조, 흡수 및 인광 메커니즘, 전기 발광(EL) 특성을 양자화학적으로 연구하였다. 계산 결과에 따르면, 1의 HOMO는 강한 ${\eth}$-전자 받개 능력을 갖는 trz 부분에 편재되어 있으며, 2와 3의 HOMO는 Ir d-오비탈 과 페닐 고리 ${\pi}$-오비탈의 결합이라는 것을 나타내었다. 이 논문에서는 1-3사이의 인광 수득률과 차이에 대하여 연구하였으며, 1과 3보다 2의 EL 효율이 더 큰 이유를 합리적으로 설명하였다.

• 건축역사연구
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• 제1권1호
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• pp.267-281
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• 1992

This study maintains that settlement and dwelling system reflects socio-cultural value of the people to express their image of ideal-life and intrinsic way of life. To demonstrate it, the study is conducted on a cross-cultural perspective. Through the study, it is shown that the character and content of the settlement and dwelling system is largely generated by the result of a choice among possible alternatives, which provides the theoretical base of the settlement and dwelling system.

• 대한가정학회지
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• 제44권3호
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• pp.115-126
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• 2006

The purpose of this study was to propose theoretical-practical strategies of family-based intervention for the "Healthy Family-Support Center." The theoretical background used was an ecological approach, that is, taking viewpoints of client family's microsystems as well as those of exo- and macrosystems. This study raised several critical points in researching and developing family-based intervention programs. Based on a review of the literature, the study indicated why an ecological, family-based intervention model was a relevant alternative to investigate issues in family welfare and to deliver possible assistance and solutions for them.

• 한국경영과학회지
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• 제22권4호
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• pp.51-69
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• 1997

Recently Lee et al[5] developed an approximation algorithm for the performance evaluation of the open queueing networks with blocking. This algorithm, which solves the exponential queueing networks with general configuration is developed based on the symmetrical decomposition approach and is reported to have many advantages over the previous algorithmsf. In addition to being very accurate, this algorithm is reported to be quite simple, pretty fast and solves very general configurations. In this study, we show that if a network has a tree-like configurations, the algorithm developed by Lee at al, always converges to the unique solution. To prove the theoretical results pertaining to the algorithm, some properties associated with symmetrical decomposition approach are exploited. The results obtained in this study such as the proofs of convergence of the algorithm as well as uniquences of the solution would contribute to the theoretical study for the non-tandem configurating of open queueing network.

• 대한기계학회논문집A
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• 제27권6호
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• pp.857-863
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• 2003

In rotating machinery, unbalance and misalignment are major concerns in vibration. Unbalance can be eliminated by balancing procedure to some degree. but little work has been done on the vibrations that occur in a misaligned rotor system. Currently, no generalized theoretical model based on a rotor system with flexible coupling is available to describe the vibrations caused by misalignment. As a part of systematic investigation on the misalignment, first of all, the study on flexible coupling with misalignment should be preceded. In this study, the geometry and reaction force and moment of a gear coupling with misalignment was investigated, also the theoretical model of a gear coupling with misalignment was presented by using the relationship between geometry and moment of gear coupling. It is expected that the proposed procedure can be applied to derive the theoretical model of other couplings.