• 공학교육연구
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• 제22권1호
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• pp.39-47
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• 2019

This study aims to suggest a model and instructional strategies for a flipped classroom using First Principles of Instruction in engineering education in order to organize teaching and learning activities in a flipped classroom. For this purpose, the authors analyzed the literature on the flipped classroom in engineering education and on applying First Principles of Instruction in designing flipped classroom. Then, a framework of flipped classroom employing First Principles of Instruction and instructional strategies were suggested. Two experts examined the validity of the model and of the instructional strategies, and the final version was completed reflecting on those feedback. Since engineering education aims to teach procedural knowledge as well as conceptual knowledge, different instructional strategies upon two types of knowledge were presented. The implication of our work is to illustrate the model and tactics for flipped classroom based on the Merrill's deeply rooted pedagogical approach. This study may contribute to practice in engineering education.

• 한국실내디자인학회논문집
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• 제18호
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• pp.51-58
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• 1999

The aim of this study is to discover the organic expression principles of the 20C. Architecture. As a result, first, the organic expression principles was organised in six categories, a. naturalism b. neo-naturalism, c. realism, d. abstractionism, e. regionalism, f. functionalism. Second, among the organic expression principles, the naturalism, the neo-naturalism and the abstractionism were the most dominant organic expression principles of the 20C. Architecture. Third, from 1960, the functionalism have become one of the most dominant organic expression of the 20C. Architecture.

• 무역상무연구
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• 제51권
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• pp.101-131
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• 2011

The Governing Council of UNIDROIT at its 90th session adopted on 10 May 2011 the third edition of the Principles of International Commercial Contracts("UNIDROIT Principles 2010"). The UNIDROIT Principles of International Commercial Contracts first published in 1994 and in a second edition in 2004, are taken by legislators worldwide as a model for contract law reform and increasingly used in international contracting and arbitration practice, as well as by the courts to interpret and supplement the applicable domestic law. The UNIDROIT Principles are particularly useful to parties when negotiating and drafting international contracts. The new edition of the Principles, UNIDROIT Principles 2010, prepared by a group of experts from all over the world including representatives of numerous international organizations and arbitration centers. The UNIDROIT Principles 2010 contain new provisions on restitution in case of failed contracts, illegality, conditions, and plurality of obligors and obligees, while with respect to the text of the 2004 edition the only significant changes made relate to the Comments to Article 1.4.

• Nano
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• 제13권12호
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• pp.1850138.1-1850138.6
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• 2018

Two-dimensional (2D) or layered materials have a great potential for applications in energy storage, catalysis, optoelectronics and gas separation. Fabricating novel 2D or quasi-2D layered materials composed of relatively abundant and inexpensive atomic species is an important issue for practical usage in industry. Here, we suggest the layer-structured AlOOH (Boehmite) as a promising candidate for such applications. Boehmite is a well-known layer-structured material and a single-layer can be exfoliated from the bulk boehmite by breaking the interlayer hydrogen bonding. We study atomic and electronic band structures of both bulk and single-layer boehmite, and also obtain the single-layer exfoliation energy using first-principles calculations.

• 한국세라믹학회지
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• 제46권4호
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• pp.425-428
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• 2009

We performed a density functional theory study to investigate the interaction of DEMS (diethoxymethylsilane) with the H-terminated Si (001) surface. The optimum structure of DEMS was first calculated by a first principles study. The dissociation probability of the O-C bond of DEMS was higher than the other seven bonds based on the bond energy calculation. When the fragmented DEMS groups reacted with the H-terminated Si (001) surface, it was the most favorable among the eight reactions to form a bond between the Si atom on the surface and the O atom of a fragmented DEMS group (($C_2H_5O$)Si($CH_3$)(H)-O-) by forming a $C_2H_6$ as by-product.

• 환경영향평가
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• 제16권1호
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• pp.45-58
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• 2007

Despite the ubiquitous practice of environmental impact assessment around the world, social impact assessment has been alienated from assessment process from the beginning. Not until 1993 was 'Interorganizational Committee' established in the United States to prepare for 'Principles and Guidelines for Social Impact Assessment.' This study is an attempt to critically examine US 'Principles and Guidelines.' First, the study traces history of social impact assessment to reveal why the latter became "the orphan in the assessment process." Second, it critically reviews 'Principles and Guidelines' to find its merits and defects. For instance, a principle regarding environmental justice is perceived as necessary as society has become conscious of social justice and equity while putting too much emphasis on predictive traits of social impact assessments only fosters "checklist mentality." Third, the study reflects on 'Principles and Guidelines' in particular and social impact assessment in general in order to probe what is social impact assessment. To do so, it pays attention to scholars, who have criticized technocratic and procedural elements of 'Principles and Guidelines.' They show that social impact assessment is philosophically and methodologically teleological in that "fluid and contested meanings" between social impacts and the public are meaningful in itself. And simple procedural guarantee of the public involvement, they argue, is not enough to define social impacts. Lastly, from the critical analysis of 'Principles and Guideline,' the study looks for alternatives to improve how to assess social impacts in a Korean context.

• 대한한의학방제학회지
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• 제23권1호
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• pp.1-14
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• 2015

Objectives : In Pharmaceutical Affairs Act, herbal medicinal preparations are defined as medicines made by Korean medicine principles. But in Act, Korean medicine principles are vague. Thus, there is a request to explain what the Korean medicine principles are. The aim of this study is to suggest implications of Korean medicine principles in definition of herbal medicinal preparations. Methods : With regard for definition of Korean medicine principles, we referred to the domestic and foreign regulations and literature about the history of herbal medicinal preparations. As a result, the meaning of Korean medicine principles was historically examined from various angles. Results : Through this study, we studied the Korean medicine principles from the past medical history. Due to the broad definition of Korean medicinal principles, we tried to extract general ideas of medicine principles first. We also found that we had scientific formulations based on korean medicine principles which could be used in modern society. In the end, we found that numerous medicine principles which include ‘Four qi and five flavors theory’, ‘Processing of medicinals’, ‘Yin and yang theory’, ‘Five phases theory’, ‘Meridian entry of viscera and bowels theory’, ‘Herb Couplet Interaction theory’, ‘Sovereign, minister, assistant and courier theory’, etc. Conclusions : Innumerable principles used from the past existed. These principles were broad and could be used as modern scientific principles. Based on these facts, we illustrated details of Korean medicine principles, hope this principles be widely shared and Korean herbal medicinal preparations be further developed.

• 한국표면공학회지
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• 제50권1호
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• pp.1-9
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• 2017

Design of novel materials in renewable energy systems plays a key role in powering transportation vehicles and portable electronics. This review introduces the research work of first principles-based computational design for the materials over the last decade to accomplish the goal with less financial and temporal cost beyond the conventional approach, especially, focusing on electrocatalyst toward a proton exchange membrane fuel cell (PEMFC). It is proposed that the new method combined with experimental validation, can provide fundamental descriptors and mechanical understanding for optimal efficiency control of a whole system. Advancing these methods can even realize a computational platform of the materials genome, which can substantially reduce the time period from discovery to commercialization into markets of new materials.

• Korean Chemical Engineering Research
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• 제57권3호
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• pp.368-371
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• 2019

Using first principles calculations we investigated the thermomechanical stability of spent nuclear fuels (SNF), especially how mechanical properties of $UO_2$, such as, bulk, shear and Young's moduli and Poisson's ratio vary through alpha-decay of U into Th with generation of He gas. Our results indicate that substitution of U by Th through alpha decay ($U_{1-x}Th_xO_2$) does not significantly affect the stability of the grain in a fuel matrix. In addition, we studied the transport properties of He in and boundaries of the $U_{1-x}Th_xO_2$ grain. Helium preferentially resides at the grain boundaries through diffusion. Our study can contribute to substantial reduction of environmentally risk and enhancement of our sustainability by safe control of radioactive materials.

• 가정과삶의질연구
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• 제11권2호
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• pp.111-120
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• 1993

The purpose of the study is to find how the family moral principles are placed in the Buddhist Sutra how they come up to the surface through certain course. We set up the following five kinds of question for aim of this study First in which form are the family moral principles placed in the Buddhist Sutra ? That is are they shown devided into two between the fundamental though of Buddhism and the concrete description? Second how are the family moral principles melted into the fundamental though of Bud-dhism ? Buddhism takes a cognitive method of pursuiting one from divesification,. If that is so the family moral principles will establish the fundamental thought of Buddhism melted along with other phenomena. When the fundamental thought of Buddhism is restored to the family moral principles which image are they presented with us? Third if the family moral princprinciples melted into the fundamental thought of Buddhism in itself came up to the surface ? Buddhism has a and is mixed together. The family moral principles of Buddhism are named from the fundamental thoughts to the family moral principles and do not come up to the surface but are melted into the important concepts of Buddism that is charity kama nirvara emptiness the principle of middle way. The aspects of the family moral principles which are melted into theses thoughts: 1) The concept of loving-kindness including equality non-self practice is shown in the family moral principles. 2) The thought of karma includes the moral principles for interdependence between the building up of home and family members. 3) Home should be a place of self-realization from the suffering realization This kind of home salvation should be set up by family members themselves and the consciousness of the master that such salvation is neither to be made by others not to be given by god is presented one should be the master of one's life 4) The thought of emptiness includes the social extension of home and those of the moral principles of collective body of family. 5) The Buddnist family is morality is based on the principle of the middle way shich means neither too extrim nor lacking.