• Polymer(Korea)
• /
• v.28 no.6
• /
• pp.455-459
• /
• 2004

Ionic conductivities of poly(ethylene oxide) (PEO)-based electrolytes are in a considerable inconsistency in many papers, varying more than three orders of magnitude for just same compositions. In PEO-salt-ceramic composite electrolytes, it has been also reported that the conductivity can be variant by almost three orders of magnitude according to thermal treatment and it has been regarded as a consequence of polymer-ceramic particle interaction. In this paper, we present a more systematic study on the change of ionic conductivity for ceramic-free PEO$_{10}$LiClO$_4$ polymer electrolytes, and found that the ionic conductivity can be variant more than hundred times according to thermal history. The slow recrystallization kinetics of PEO polymer is discussed to be responsible for the thermal history effect. Present results reveal that the effect of ceramic filler is not a main cause of the conductivity relaxation phenomenon.n.

• 한국경영정보학회:학술대회논문집
• /
• 2008.06a
• /
• pp.338-343
• /
• 2008

Government intervention, industry cooperation, new vendors, and foreign competition are all factors that exert a powerful influence on the information technology, marketplace, and on the individual IS organization. When these influences need to change an organization, it is likely the culture or identity of the organization will be targeted for change. Because an organization is also composed of cognitive frameworks, there is an implication that the existing cognitive structures are in jeopardy. Thus, the cognitive component is important in how all members of organizations react and respond to change. This paper defines cognitive process and its related research history, introduces organizational change matters, tries to solve conflicts in organizational changes, and applies this topic to the information systems field.

• Journal of Korean Academy of Nursing
• /
• v.35 no.5
• /
• pp.904-913
• /
• 2005

Purpose: The purpose of this study was to investigate smoking cessation behavior of male taxi drivers in Korea on the basis of the Transtheoretical model(TTM), and to validate the usefulness of TTM. Method: Data were collected using a self-reported questionnaire including smoking history and major factors of TTM from 208 subjects who were current smokers or ex-smokers. Data were analyzed by descriptive statistics and ANOVA. Result: Most subjects ($85.1\%$) were current smokers. Stages of change were precontemplation ($44.7\%$) and contemplation ($27.4\%$). Subjects in precontemplation stages had the lowest mean score in processes of change and the highest mean scores in decisional balance(pros) and temptation(positive affective, habitual/craving). According to stages of change, there were statistically significant differences in processes of change, decisional balance, and temptation. Conclusion: This study supported the generalization of TTM. As this study showed that the subjects didn't have motivation in smoking cessation, applying tailored smoking cessation programs for taxi drivers is needed.

• Journal of The Korea Institute of Healthcare Architecture
• /
• v.16 no.4
• /
• pp.41-48
• /
• 2010

Since 1970s' many hospitals have been built due to the economic growth and change of social policy in Korea. But, we had no sufficient data and design guidelines of planning and designing to get good design solutions. From the first paper on the healthcare architecture issued in 1974, many researches have been performed. Researches could be one of the efforts to solve the problems and satisfy the needs of those periods. Researches could reflect the characteristics of healthcare architecture of those periods. So in this paper 267 papers issued between 1974-2009 were analyzed to get the characteristics patterns of research periodically. This paper aims to provide a basic data for studying of history of healthcare architecture in Korea.

• Journal of architectural history
• /
• v.8 no.2 s.19
• /
• pp.109-118
• /
• 1999

The purpose of this paper is to apply Stephen C. Pepper's contextualism to architecture: to interpret the former in the light of architectural theory, and ultimately to liberate architecture from the Western 'Idea' and return it to its context. The major concepts of Pepper used in the paper are quality, texture, spread, change, fusion, strand and context. Pepper's contextualism makes us realize that architecture cannot be separated from its context where human beings, history, neighborhood, and nature are all interpenetrating, and create a quality. Contextualism thus teaches us to make an effort to understand the region where we belong, and to create an architectural device that interrelates form and function of an architecture with its space-time environment, or its strand, texture and context.

• Journal of the Korean institute of surface engineering
• /
• v.28 no.5
• /
• pp.309-319
• /
• 1995

The substrate patterned with the dry film has the cavity which has the $90^{\circ}$ wall angle. Electroplating Cu on this patterned substrate has the differrent shape history with the electrochemical parameters. By potential theory model, the reason of the variation of the shape change with the these parameters was investigated. The shape history could be explained by the current flow and the correlated area effects. By embedding the Ni layer between the Cu layers, shape history with the time was obtained experimentally and the results was compared with the numerical analysis by BEM. The adhesive Cr-Cu film in TAB application was etched with the various condition. The best condition for the etchant of the Cr-Cu film was found.

• Journal of the Korea Computer Industry Society
• /
• v.5 no.9
• /
• pp.1031-1042
• /
• 2004

A renewable energy resource data has the characteristic that its measurement value changes every moment. So the amount of primitive data which is produced by the change of time arevast. Therefore researches are needed for the construction of history database which can save and manage vast amount of history information of renewable energy resource data systematically, the estimation system of renewable energy resources. In this paper, to solve these problems, the estimation method of renewable energy resources is suggested. The method makes it possible to estimate momently changing data of the past systematically.

• Journal for History of Mathematics
• /
• v.17 no.2
• /
• pp.33-52
• /
• 2004

The paper is analyzed the mathematics curriculum of Korea and the philosophy of the mathematics education in the history of mathematics education. We have found that the various philosophy of Western mathematics education have led us to various views of the mathematics curriculum of Korea. This change of the mathematics curriculum in Korea have important implications to the didactics of mathematics. This study tried to find out the direction of outlook on the mathematics education in the future.

• Korean Journal of Oriental Medicine
• /
• v.16 no.2
• /
• pp.43-55
• /
• 2010

Objective : There is a growing interest on Complementary and Alternative Medicine(CAM). But the term 'CAM' often causes confusion, for the perception of CAM is determined by how the relationship between CAM and Conventional Medicine is established. Methods : In this paper, we researched the concept of CAM through the change in the terminology and definition of CAM throughout history. Furthermore, we also analyzed related papers in Korea. Results : International studies show that the relationship between Conventional Medicine and CAM has become more cooperative. Meanwhile, in Korea, Korean Medicine is categorized as a type of Conventional Medicine, not CAM. Conclusion : Though Korean Medicine is included in Conventional Medicine in Korea, the research methodology is still restricted in ways of bio-medical science. Further study on the original research method of Korean Medicine is needed.

• Journal for History of Mathematics
• /
• v.26 no.5_6
• /
• pp.389-400
• /
• 2013

The article makes a discussion to conceptualize a histo-genetic principle in the real historical view point. The classical histo-genetic principle appeared in 19th century was founded by the recapitulation law suggested by biologist Haeckel, but recently it was shown that the theory on it is no longer true. To establish the alternative rationale, several metaphoric characterizations from the history of mathematics are suggested: among them, problem solving, transition of conceptual knowledge to procedural knowledge, generalization, abstraction, circulation from phenomenon to substance, encapsulation to algebraic representation, change of epistemological view, formation of algorithm, conjecture-proof-refutation, swing between theory and application, and so on.