• 한국문헌정보학회지
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• 제48권2호
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• pp.177-199
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• 2014

본 연구의 목적은 한국십진분류법의 디지털 관련 항목명의 확장 전개방안을 제시하는 것이다. 이 연구목적을 달성하기 위해서 첫째, 듀이십진분류법과 한국십진분류법의 디지털 관련 항목명이 전개되어 온 과정을 분석하였다. 둘째, 미국의회도서관 주제명표목표와 국립중앙도서관 주제명표목표의 디지털 관련 주제를 분석하였다. 셋째, 듀이십진분류법 제23판과 미국의회도서관 주제명표목표에 전개된 디지털 관련 분류 항목명을 비교 분석하고, 한국십진분류법 제6판 본표에 전개된 분류항목명과 국립중앙도서관 주제명표목표를 비교 분석하였다. 분석 결과 한국십진분류법 제6판에 전개된 디지털 관련 항목명이 12개 항목으로 디지털 관련 자료의 합리적인 분류가 어려운 것으로 확인되었다. 그러므로 KDC의 디지털과 관련된 항목명을 포함주기와 분류지시주기에 추가하거나 새로운 분류항목으로 확장 전개하여야 할 것이다.

• 복식
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• 제64권3호
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• pp.155-164
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• 2014

This paper discusses the social changes in the late 19th century that provided a historical background in the appearance of the ready-to-wear clothing in the West. It examines the social meanings of the appearance of the ready-to-wear clothing at the time and traces the origins of these social characteristics to the book published in the $16^{th}$ century by Thomas More, Utopia. The results of this study can be summarized as the following. First, the appearance and expansion of the ready-to-wear clothing coincided with the social transition from a class-based society to a democratic society in the west in the $19^{th}$ century. Second, uniforms were produced in the $18^{th}$ century Europe in order to distinguish different classes and ethnic groups, with the military uniforms being the most visible example. Frequent military campaigns in Europe resulted in the increasing demand and expansion of military uniforms, which later became the basis of the standardization of the men's clothing with uniforms. Third, the women's ready-to-wear clothing appeared later than their male counterpart and was made possible by the simplification of design, an important characteristic of women's wear in the later period. Fourth, the social characteristics of the ready-to-wear clothing can be traced to a democratic and egalitarian society without personal properties that was depicted in the book of Utopia by Thomas More. Fifth, one of the characteristics of the ready-to-wear clothing can be found in the description of Utopia, in which everyone in Utopia wears a clothing of the same form for life.

• Human Ecology Research
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• 제56권3호
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• pp.247-262
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• 2018

This study investigates the process of PCK formation for 2017 novice teachers in Busan. This study was conducted parallel to quantitative research using the H-PCK measurement tool as well as qualitative research methods through an open questionnaire and after-interview. Consequently, the H-PCK level of novice teachers was 3.51. The knowledge of perspective on home economics education (KP) was 3.87, knowledge of home economics curriculum (KC) was 3.37 and the knowledge of home economics instructional strategies (KI) was 3.39. Study participants reported that curriculum knowledge, curriculum content knowledge, and teaching strategy knowledge were formed through preparation for appointment; however, it was not possible to judge if PCK was formed for the restructuring ability or the reconstruction ability. Knowledge related to curriculum content was learned through teacher training, internet teacher community, and internet information materials. Knowledge of teaching strategies was learned through 1-2 teaching consulting or peer scholarship. It is necessary to revise the university curriculum (such as expansion of curriculum education, expansion of experience in teaching practice, and actual case study) order to form PCK. Second, it should be developed and operated various training programs for the formation of home economics education curriculum knowledge. Third, it is necessary to organize a nationwide system to support the mentor. In the future, it is necessary to study PCK analysis for each unit and topic as well as to explain methods that can be provided to field teachers.

• 설비공학논문집
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• 제29권11호
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• pp.580-591
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• 2017

In accordance with 2015 Paris agreement, each individual country around the world should voluntarily propose not only its (individual) reduction target, but also actively develop and present expansion targets of its scope and concrete reduction goals exceeding the previous ones. Accordingly, it is necessary to prepare a macroscopic, long-range strategy for reducing energy consumption and greenhouse gas emissions, which can cover a single building, town, city and eventually even a province. The purpose of this research is to gather and compile government-acquired data from various sources and (in accordance with contents and specificity), combine building data by stages by using multi-variable matrix and then analyze the significance of combined data for each stage. The first order data presents the probability and the cost effectiveness of energy saving on the scale of a city or a province, based only upon general information, size and power consumption of buildings. The second order data can identify a pattern of energy consumption for a building of a specific purpose and which tends to consume a larger amount of energy during one particular season (than others). Finally, the third order data can derive influential factors (base load, humidity) from the energy consumption pattern of a building, and thus propose an informed and practical energy-saving method to be applied in real time.

• 한국사회복지학
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• 제55권
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• pp.205-230
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• 2003

1990년대 이후 한국 사회의 변화를 주도해 온 거대한 두 가지의 물줄기, 즉 민주주의의 공고화와 세계화의 확산이라는 흐름 속에서 한국 사회복지 정책은 변화하였다. 이 연구의 목적은 소득보장과 사회복지서비스 영역에서 이루어진 변화를 통해 1990년 이후 전개된 한국 사회복지정책의 변화양상을 가능하면 정확하게 묘사하고 해석하는 것이다. 분석의 결과 다음과 같은 점들이 확인되었다. 첫째, 1990년 이후 사회복지 정책 영역에 대한 투입량은 크게 증가하였다. 특히 1998년에는 GDP 대비 11%선으로까지 사회복지비 지출 규모가 늘어났다. 둘째, 이러한 전환은 복지를 둘러싼 국가와 기업의 역할 재조정을 의미하며, 그것은 바로 '낙후된 국가-성장한 시장'이라는 한국 사회복지체제의 중요한 특성을 변화시키는 것이었다. 셋째, 이러한 전환의 핵심적 내용은 소득보장제도의 발전으로 요약된다. 소득보장제도의 빈곤감소 효과와 불평등 완화 효과의 증대가 실증적으로 확인되었다. 넷째, 소득보장제도의 발전과는 대조적으로 한국의 사회복지서비스 영역은 상대적으로 정체되어 있다. 가족을 비롯한 공동체의 책임으로 남겨져 비상품화되어 있던 사회복지서비스 부문은 주로 기업에 위임되었던 소득보장 부문과는 대조적으로 크게 변화하지 않은 것이다. 그러므로 1990년 이후 한국 사회복지정책의 변화는 주목할 만한 것이었지만, 그것을 통해 체제의 변화까지 이루어진 것은 아니다.

• 디지털융복합연구
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• 제14권5호
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• pp.1-10
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• 2016

새로운 제도나 경영전략 등이 성공적으로 정착되어 조직의 성과제고로 연계되기 위해서는 내재화과정이 반드시 필요하다. 성공적인 내재화를 위해서 많은 기관에서 가장 많이 활용하는 방법은 교육방법 및 커뮤니케이션 전략이라고 할 수 있다. 그러나 교육이나 커뮤니케이션을 원활하게 진행하기 위해서는 조직구성원들간 신뢰와 협력지향적인 문화 등 다양한 측면에서의 융합전략이 뒷받침되어야만 한다. 본 연구에서는 특정 공공기관의 직원들을 대상으로 새로이 도입한 조직비전, 핵심가치 등에 대한 내재화 정도 및 조직문화 등에 대해 조사해보고, 성공적인 경영전략 내재화 방안을 제시하고자 하였다. 우선, 경영전략 강화 교육을 위해서는 반복학습을 통해 자주 노출시키고 자주 대화하는 방법이 효과적이다. 이를 위해 집합교육과 이러닝 등 집중적인 교육방법을 병행해야 한다. 둘째, 의사소통의 활성화를 위해서는 기관장이 직원들과의 내재화를 위한 의사소통에 관심을 기울여야 하며, 다양한 방법의 의사소통 전략을 세워야 할 것이다. 끝으로, 조직문화의 변화를 위해서는 동료들간 개방적이고 협조적인 문화구축을 위한 비공식적인 의사소통의 장을 자주 마련하고 인적네트워크의 양적, 질적 확대를 지원해주어야 한다.

• Advances in aircraft and spacecraft science
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• 제8권4호
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• pp.345-372
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• 2021

The analysis of nonlinear vibrations, buckling, post-buckling, flutter boundary determination and post-flutter behavior of a homogeneous curved plate assuming cylindrical bending is conducted in this article. Other assumptions include simply-supported boundary conditions, supersonic aerodynamic flow at the top of the plate, constant pressure conditions below the plate, non-viscous flow model (using first- and third-order piston theory), nonlinear structural model with large deformations, and application of mechanical and thermal loads on the curved plate. The analysis is performed with constant environmental indicators (flow density, heat, Reynolds number and Mach number). The material properties (i.e., coefficient of thermal expansion and modulus of elasticity) are temperature-dependent. The equations are derived using the principle of virtual displacement. Furthermore, based on the definitions of virtual work, the potential and kinetic energy of the final relations in the integral form, and the governing nonlinear differential equations are obtained after fractional integration. This problem is solved using two approaches. The frequency analysis and flutter are studied in the first approach by transferring the handle of ordinary differential equations to the state space, calculating the system Jacobin matrix and analyzing the eigenvalue to determine the instability conditions. The second approach discusses the nonlinear frequency analysis and nonlinear flutter using the semi-analytical solution of governing differential equations based on the weighted residual method. The partial differential equations are converted to ordinary differential equations, after which they are solved based on the Runge-Kutta fourth- and fifth-order methods. The comparison between the results of frequency and flutter analysis of curved plate is linearly and nonlinearly performed for the first time. The results show that the plate curvature has a profound impact on the instability boundary of the plate under supersonic aerodynamic loading. The flutter boundary decreases with growing thermal load and increases with growing curvature.

• Structural Monitoring and Maintenance
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• 제5권3호
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• pp.417-428
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• 2018

In this paper, various model reduction methods were assessed using a shear frame, plane and space truss structures. Each of the structures is one-dimensional, two-dimensional and three-dimensional, respectively. Three scenarios of poor, better, and the best were considered for each of the structures in which 25%, 40%, and 60% of the total degrees of freedom (DOFs) were measured in each of them, respectively. Natural frequencies of the full and reduced order structures were compared in each of the numerical examples to assess the performance of model reduction methods. Generally, it was found that system equivalent reduction expansion process (SEREP) provides full accuracy in the model reduction in all of the numerical examples and scenarios. Iterated improved reduced system (IIRS) was the second-best, providing acceptable results and lower error in higher modes in comparison to the improved reduced system (IRS) method. Although the Guyan's method has very low levels of accuracy. Structures were classified with the excitation frequency. High-frequency structures compared to low-frequency structures have been poor performance in the model reduction methods (Guyan, IRS, and IIRS).

• 한국해양공학회지
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• 제31권5호
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• pp.371-377
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• 2017

This paper introduces a simulation-based determination method for hydrodynamic derivatives and 6DOF (degrees-offreedom) motion analysis for an underwater vehicle. Hydrodynamic derivatives were derived from second-order modulus expansion and composed of the added mass, and linear and nonlinear damping coefficients. The added mass coefficients were analytically obtained using the potential theory. All of the linear and nonlinear damping coefficients were determined using CFD simulation, which were performed for various cases based on the actual operating condition. Then, the linear and nonlinear damping coefficients were determined by fitting the CFD results, which referred to 6DOF forces and moments acting on an underwater vehicle, with the least square method. To demonstrate the applicability of the current study, 6DOF simulations for three different scenarios (L-, U-, and S-turn) were carried out, and the results were validated on the basis of physical plausibility.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2005년도 춘계학술발표대회 논문집
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• pp.5-8
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• 2005

In this paper, the electromechanical displacements of curved piezoelectric actuators composed of PZT ceramic and laminated composite materials are calculated based on high performance computing technology and the optimal configuration of composite curved actuator is examined. To accurately predict the local pre-stress in the device due to the mismatch in coefficients of thermal expansion, carbon-epoxy and glass-epoxy as well as PZT ceramic are numerically modeled by using hexahedral solid elements. Because the modeling of these thin layers increases the number of degrees of freedom, large-scale structural analyses are performed through the PEGASUS supercomputer, which is installed in our laboratory. In the first stage, the curved shape of the actuator and the internal stress in each layer are obtained by the cured curvature analysis. Subsequently, the displacement due to the piezoelectric force (which is resulted from applied voltage) is also calculated. The performance of composite curved actuator is investigated by comparing the displacements obtained by the variation of thickness and elastic modulus of laminated composite layers. In order to consider the finite deformation in the first analysis stage and include the pre-stress due to curing process in the second stage, nonlinear finite element analyses are carried out.