• Journal of the Korean School Mathematics Society
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• v.6 no.2
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• pp.21-37
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• 2003

In this paper, we improved, compared and analyzed the articulation of school mathematics. We also tried to form the theoretical basis of school mathematics by classifying and considering the articulation into vertical articulation and horizontal articulation depending on the meaning, and give an actual help. The articulation of school mathematics until now has been focused on a study of vertical articulation according to the macroscopic characteristic of mathematics, but now a study of the horizontal articulation as well as the vertical articulation should be done in consideration of the micro characteristics of mathematics and various realities of life by modifying a syllabus of the function unit and by using internet homepage. Thus, we structurally divided the articulation into vertical articulation and horizontal articulation, analyzed mathematical activities and presented actual models of each representative learning activity for smooth teaching in schools through the function unit.

• The Journal of Korean Society for School & Community Health Education
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• v.10 no.1
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• pp.17-34
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• 2009

연구배경: 최근 청소년 흡연의 저연령화 문제가 심화되고 있어 청소년 흡연 대책마련이 절실히 요구되고 있다. 그 중에서도 흡연예방교육은 근본적인 문제를 해결할 수 있는데, 우리나라의 교육여건상 흡연예방교육을 위하여 할애할 수 있는 시간과 독립성, 교육내용상의 질을 한꺼번에 개선하기는 매우 힘들다. 이과 같은 문제를 해결하기 위하여 본 연구는 기존의 교과 과정의 구조에 체계적인 연계성 이론을 적용하여 통합적인 흡연예방 프로그램을 구상하게 되었다. 연구방법: 수직적/수평적인 연계성 이론에서 통합성, 접합성, 연결성의 3가지 영역을 적용하기 위한 방법은 다음과 같다. 1) 지식, 태도, 기술, 행동에 따른 일반적 가이드 라인을 재조성하였다. 2) 효과적인 흡연예방을 위한 사회/심리적인 요인을 기존 교과와 같이 보완할 수 있도록 개발하였다. 3) 기존 교과서의 내용을 분석하여 흡연예방과 관련된 효과와 단원을 파악하여 2)과 3)을 접합하였다. 4) 연결성은 거시적인 관점에서 지금까지 개발된 모든 요소들이 관련되어 있음을 보여 주어야 하므로, 본 연구는 가이드라인, 강화내용, 각 교과 단원이 모두 연결되어 있음을 보여주는 표 제시로 완성하고자 하였다. 이 연구를 위하여 각 교과를 대표하는 교과서 총 111권이 검토되었다. 연구결과: 청소년 흡연예방에 효과적이라고 알려진 사회/심리적인 모든 요인들은 사회, 윤리, 도덕 등의 교과에서 충분히 다루고 있음을 알 수 있었다. 그러나, 흡연과 직접적으로 관련되어 있지 않기 때문에 흡연예방교육과 상관이 없다고 여겨질 수 있다. 이러한 단점을 보완하기 위하여 각 관련 교과와 단원, 흡연예방관련지도를 제안하는 교사용 보완 지도자료 지침서가 개발되었다. 흡연예방교육에 필요한 모든 교육적인 요소들이 수직적(초중고등학교), 수평적(각 교과간)으로 연계되어 있음을 보여 주었다. 연구결론: 독립적인 흡연예방 프로그램을 개발하기 보다는 이와 같이 기존의 커리큘럼에 구조적으로 통합할 수 있는 흡연예방 프로그램이 비용-효율적일 수 있다.

• Computational Structural Engineering
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• v.6 no.1
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• pp.11-16
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• 1993

진동기초의 해석 및 설계에서의 주요사항은 진동하중자체의 특성을 산정하는 것과 기초구조의 수평, 수직, Rocking, Pitching 응답의 해석 및 수평-Rocking이 연계된 운동의 해석이다. 현재 사용되는 진동기초설계의 해석방법은 Reissner(1936)의 반무하지반영역 위에 놓인 원형강판에 대한 해석적 결과를 이용한 여러가지 변형된 방법이 사용되고 있다. 이러한 진동기초의 해석방법은 지반의 모형화하는 방법에 따라 탄성 반무한영역으로 지반을 모형화하는 경우 (Reissner(1936), Shekhter(1948), Sung(1953), Quinlan(1953), 등)와 감쇠-탄성스프링에 의해 지반을 모형화하는 경우 (Lysmer and Richart(1966), Barkan(1962), 등)로 나눌 수 있다. 최근의 실제 설계에는 선형스프링 이론을 바탕으로 하여, 감쇠효과와 진동에 참여하는 흙의 질량영향을 무시하는 Barakan(1962)의 방법이 많이 사용되고 있다.

• Journal of Korea Water Resources Association
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• v.50 no.2
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• pp.129-138
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• 2017

In this study, the hydraulic model test was performed for the 3 vertical inlets of the Shinwol rainwater storage & drainage system that Seoul City plans to install, and the control discharge value actually measured was analyzed comparing to the value obtained using the theoretical control discharge equation suggested by Yu and Lee (2009). In the results, it was 66~69% compared to the value obtained from theoretical equation showing that the control discharge value according to the theoretical equation is calculated excessively. The sensitivity analysis by design factor was performed using 3 models conducted in this study and 15 hydraulic experiment models conducted in existing research Yu and Lee (2009). The sensitivity analysis of control discharge equation was performed by dividing $Q_{cm}/Q_{cp}$ into 3 ranges. The suggested equation considered only the influence on the tangential intake structure design factor B, z, ${\beta}$, e/B, so ${\theta}$, L considered complex influence suggested equation needed to be more improved.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.30 no.5
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• pp.9-14
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• 2002

A higher order zig-zag plate theory is developed to accurately predict fully coupled mechanical, thermal, and electric behaviors. Both the in-plane displacement and temperature fields through the thickness are constructed by superimposing linear zig-zag field to the smooth globally cubic varying field. Smooth parabolic distribution through the thickness is assumed in the transverse deflection in order to consider transverse normal deformation. Linear zig-zag form is adopted in the electric field. The layer-dependent degrees of freedom of displacement and temperature fields are expressed in tern-is of reference primary degrees of freedom by applying interface continuity conditions as well as bounding surface conditions of transverse shear stresses and transverse heat flux. The numerical examples of coupled and uncoupled analysis demonstrate the accuracy and efficiency of the present theory. The present theory is suitable for the predictions of fully coupled behaviors of thick smart composite plate under mechanical, thermal, and electric loadings combined.

• Journal of the Economic Geographical Society of Korea
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• v.8 no.2
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• pp.217-236
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• 2005

This paper aims to analysis the production linkage relationships between large firm and its subcontracting firms, especially focus on the spatial network and collaboration network. For the purpose of it, the division of semiconductor in Samsung Electronics and its most important subcontracting firms are picked up for the case study. The empirical study show that the location distribution pattern of Samsung Electronic's subcontracting firms is concentrated very highly on the Kyeong-Ki Province and Chung-Nam Province in Korea, which is the location sites of Samsung Electronic's key plants as well as the best environment for business in Korea. And the major subcontracting firms seems to be in the hierarchic and vertical relationship with Samsung Electronics rather than horizontal and good collaboration network in this case.

• Journal of Korean Society of Steel Construction
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• v.14 no.1
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• pp.105-111
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• 2002

A post-tensioned slab bridge is analyzed by the specially orthotropic laminates theory. Both the geometry and the material of the cross section of the slab are considered symmetrical with respect to the mid-surface so that the bending extension coupling stiffness, $B_{ij}=0$, and $D_{16}=D_{26}=0$. Each longitudinal and transverse steel layer is regarded as a lamina, and material constants of each lamina is calculated by the use of rule of mixture. This bridge with simple support is under uniformly distributed vertical and axial loads. In this paper, the finite difference method and the beam theory are used for analysis. The result of beam analysis is modified to obtain the solution of the plate analysis. The result of this paper can be used for post-tensioned slab bridge analysis by the engineers with undergraduate study in near future.

• KDI Journal of Economic Policy
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• v.11 no.3
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• pp.61-85
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• 1989

본고(本稿)에서는 최근 달성된 전국민의료보험(全國民醫療保險)(NHI)의 재원조달방식(財源調達方式)을 개관한 다음 소득재분배관점(所得再分配觀點)에서 이론적(理論的), 실증적(實證的) 분석(分析)을 행하고자 한다. 의료보험(醫療保險)은 주로 건강한 사람으로 부터 병든 사람으로 의료(醫療)의 수평적(水平的) 재분배기능(再分配機能)을 행하나 결과적으로 수직적(垂直的) 재분배(再分配)에도 영향을 주게 된다. 형평(衡平)과 관련하여 모든 국민(國民)들에게 필요한 최저수준(最低水準)의 의료이용(醫療利用)을 보장한다든가 의료이용(醫療利用)에 따른 경제적(經濟的) 부담(負擔)을 균등하게 한다든가 하는 제기준(諸基準)의 선택은 결국 우리 사회(社會)가 내려야 할 가치판단(價値判斷)의 문제일 것이나 우리의 여건에 비추어 전자(前者)를 기조(基調)로 하되 후자(後者)를 지향하는 접근방식이 바람직하고 평가된다. 실증분석(實證分析)의 결과는 비록 작은 크기이기는 하나 어느 정도 재분배효과(再分配效果)를 보여주었으나 프로그램간 급여(給與)와 보험료부담(保險料負擔)의 측면에서 격차가 벌어지고 있는 실정이어서 NHI 재정통합(財政統合)이라는 장기목표(長期目標) 아래 소득연계적(所得連繫的)인 보험료부담(保險料負擔) 및 급여체계(給與體系)를 단계적으로 확립해 나가되 우선은 의료보호(醫療保護)부터 이 방안(方案)을 실천에 옮기도록 권고한다.

• Journal of the Economic Geographical Society of Korea
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• v.19 no.3
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• pp.535-549
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• 2016

The contract farming scheme of today is a new system that allows the forward and backward linkage of the agribusiness through vertical coordination while also leading the changes within the agri-food system. As contract farming of agricultural products becomes routine in both advanced and developing countries alike, it is gaining the attention of researchers in various fields, including geography. This research discusses the research trends and problems regarding contract farming through literary research on the research progress of foreign researchers on contract farming. The content of the research specifically includes explanations regarding the relationships between the rise of contract farming and changes in the agri-food system and discusses the basic theoretical foundations of contract farming. The research also defines the economic and environmental effects of contract farming and its purpose in regional development policies and concludes with discussions of the possible future research subjects on contract farming.

• Journal of Korea Society of Industrial Information Systems
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• v.15 no.4
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• pp.71-81
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• 2010

The purpose of this study is to examine the moderating effects of the Leader-member exchange(LMX) on relationship between the interpersonal conflict and turnover intention. Since effective management of IS personnel is important issue for the IS related researchers and practitioners since their turnover rate has been known to be high and skilled personnel have been in short supply. We develop the hypotheses from the prior studies and empirically testing them in the context of IS personnels from various companies located in vicinity of capital city of Korea. This empirical study show interesting results. Good leader-member exchange has the moderating effect on the management of interpersonal conflict level and drastic reduction of the turnover behavior. Based on the analyzed results, we discussed the theoretical implications and limitations.