• 한국세라믹학회지
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• 제21권3호
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• pp.217-220
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• 1984

The leaching of Na-fluor-tetrasilicic mica $NaMg_{2.5}(Si_4O_{10})F_2$ (Na-TSM) in the deionized water was investigated by measuring the pH released Na and Mg contents in the suspension. According to the results it was found that $Na^+$ ions of interlayer in the Na-TSM were easily replaced by $H^+$ ions from the deionized water because $Na^+$ ions of I were repidly diffused to form a large hydrated electric double layer in the suspension.

• 충청수학회지
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• 제29권2호
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• pp.229-253
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• 2016

As a generalization of (i, j)-weakly m-continuous functions [43], we introduce the notion of weakly M(i, j)-continuous functions and obtain many characterizations and some properties of the functions. We show that the function is a unified form of some functions between m-spaces and certain kinds of weakly continuous functions in bitopological spaces.

• 대한수학회보
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• 제53권5호
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• pp.1281-1289
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• 2016

Richard Stanley suggested the problem of finding combinatorial proofs of formulas for counting regions of certain hyperplane arrangements defined by hyperplanes of the form $x_i=0$, $x_i=x_j$, and $x_i=2x_j$ that were found using the finite field method. We give such proofs, using embroidered permutations and linear extensions of posets.

• 산업융합연구
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• 제12권2호
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• pp.40-52
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• 2014

I present a theoretical analysis of the charismatic leadership and the follower's role. I distinguish between two types of charismatic relationships and present general propositions about how followers' self-concepts may dertermine the type of charismatic relationship they form with the leader. I conclude by suggesting further the study.

• Bulletin of the Korean Chemical Society
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• 제24권8호
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• pp.1141-1149
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• 2003

The structures and gas-phase ionization energies (ΔG°) of Meldrum's acid (I) and related cyclic (II-VI) and acyclic compounds (VII-IX) are investigated theoretically at the MP2/6-31+$G^*$, B3LYP/6-31+$G^*$, B3LYP/6- 311+$G^{**}$, B3LYP/6-311++G(3df,2p) and G3(+)(MP2) levels. Conformations of three neutral cyclic series vary gradually from boat (Meldrum's acid, I), to twisted chair (II) and to chair (III) as the methylene group is substituted for the ether oxygen successively. The preferred boat form of I can be ascribed to the two strong $n_O$ → σ* c-c antiperiplanar vicinal charge transfer interactions and electrostatic attraction between negatively charged C¹ and positively charged C⁴at the opposite end of the boat. All the deprotonated anionic forms have half-chair forms due to the two strong $n_C$ → π* c=0 vicinal charge transfer interactions. The dipole-dipole interaction theory cannot account for the higher acidity of Meldrum's acid (I) than dimedone (III). The origin of the anomalously high acidity of I is the strong increase in the vicinal charge transfer ($n_C$ → π* c=0) and 1,4-attrative electrostatic interactions (C¹↔C⁴) in the ionization (I → $I^-$ + $H^+$). In the acyclic series (VII-IX) the positively charged end atom, C⁴, is absent and the attractive electrostatic stabilization (C¹↔C⁴) is missing in the anionic form so that the acidities are much less than the corresponding cyclic series.

• Asian Pacific Journal of Cancer Prevention
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• 제15권3호
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• pp.1125-1131
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• 2014

Background: Schistosomiasis is a parasitic disease causing chronic ill health in humans with a serious consequences for socio-economic development in tropical and subtropical regions. There is also evidence linking Schistosoma mansoni to colonic carcinoma occurrence. The aim of this study was to evaluate some inflammatory and oxidative stress biomarkers, as well as L-fucose as linkers between intestinal schistosomiasis and colonic dysplasia development in mice. Materials and Methods: This study was conducted upon 80 mice that were divided the control group (10 non infected mice) and infected group which was subdivided into 7 sub-groups (10 mice each) according to the time of sacrifaction in the post infection (p.i.) period, 10 mice being sacrificed every two weeks from 6 weeks p.i. to 18 weeks p.i. Tumor necrosis factor alpha (TNF-${\alpha}$), inducible nitric oxide synthase (iNOS), and pentraxin 3 (PTX3) levels were estimated by immunoassay. The L-fucose level, and thioredoxin reductase (TrxR) and lactate dehydrogenase (LDH) activities were also evaluated in colonic tissue. Results: The current study revealed statistically significant elevation in the studied biochemical markers especially at 16 and 18 weeks p.i. The results were confirmed by histopathological examination that revealed atypical architectural and cytological changes in the form of epithelial surface serration and nuclear hyper-chromatizia at 14, 16 and 18 weeks p.i. Conclusions: inflammation, oxidative stress and L-fucose together may form an important link between Schistosomal mansoni infection and colonic dysplasia and they can be new tools for prediction of colonic dysplasia development in experimental schistosomiasis.

• 논리연구
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• 제16권3호
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• pp.407-436
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• 2013

이 글의 목표는 직관주의적 유형론에서의 진리개념이 어떻게 이해될 수 있는지를 검토하고, 이에 의거하여 직관주의적이면서 객관적인 진리개념을 확보하는 문제에 있어서 프라위츠의 논증보다 진전된 논증을 제시하는 것이다. 이를 위해, 직관주의적 유형론에서의 명제, 유형 및 판단의 구분을 프레게의 판단이론과 비교하며 간략히 설명한 후, 직관주의적 유형론에서의 진리판단을 분석하고, 이에 의거해 증명의 존재의 확정성이 어떻게 이해될 수 있는지 밝힐 것이다. 또한 직관주의적 유형론에서 진리판단으로서의 존재판단이 어떻게 이해되어야 하는지, 특히 왜 그것이 존재양화명제가 될 수 없는지 그 이유를 밝히고, 존재판단을 생략적 판단으로 해석하는 한 견해를 비판할 것이다. 직관주의적 유형론에서의 진리개념에 관한 이 글에서의 분석은 증명의 존재의 확정성 문제와 증명의 존재의 비명제적 성격을 분명히 한 점에서 직관주의적이고 객관적인 진리개념에 대한 프라위츠의 규정보다 진전된 형태의 설명임을 밝히고, 이런 진리개념에 대한 주관적 진리개념의 옹호자들의 한 비판에 답할 것이다.

• 복식
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• 제58권3호
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• pp.131-148
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• 2008

Each stylistic period through history has its own unique look. The characteristic look of each period is completed and visualized with its prevailing ideologies, aesthetic consciousness and morality by means of 'form'. A period expresses its characteristics in accordance with form according to the widespread preferences of the time. Among the various cultural factors that form the look of the time, those that the period holds as ideal aesthetic values create the concept of 'ideal beauty' for that period. This study begins by establishing the conceptual definition of 'ideal beauty' and develops the premise that dress reflected ideal beauty. To attain the goal of the study, the selected objects are dresses represented in paintings, the actual garments from the Renaissance to Baroque periods and written references about art, art history, and history of costume. The results, based upon a theoretical study of the zeitgeist and aesthetic values of the 16th and 17th centuries, are as follows: first, ideal beauty influences the substance and form that constitute dress style. It is a byproduct of the spirit of time, the zeitgeist. The concept of ideal beauty is born within the lifestyle pursued by the ruling class and focuses on the body as an epitome of beauty, moral values, custom, lifestyle and taste as it becomes visualized via form. Second, the aspect of dress representing the ideal beauty of particular time varied according to the times. In both periods, power and dignity were used to achieve the ideal aesthetic values. In the Renaissance, power was expressed by the horizontal extension of dress (i.e. wide farthingales and sleeves) and in the Baroque period, by vertical extension (i.e. long and tall wigs, fontanges and trains). It can be said that fashion in both periods achieved an ideal, such as power and dignity, via the same means, by extending dress sizes, but the ways in which those ideals were portrayed in each period's dress yielded very contrary styles. It is understood through this study that ideal beauty influenced the dress style of the Renaissance and Baroque periods and played a decisive role in determining its forms and symbolic meanings.

• 건축역사연구
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• 제14권1호
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• pp.57-70
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• 2005

This study is the consideration about Hwaryeong-Jeon that enshrines Joseon Dynasty 22nd king Jeongjo's portrait of a king. Suwon's Hwaryeong-Jeon that accompanied a portrait and performed ritual ceremonies had several formalities and ceremonies which are connected with rituals. therefore, we will try to examine what relation between arrangement of building and plane composition had. And through this, it is thing to observe construction special quality that Hwaryeong-Jeon has. Joseon Dynasty's young-jeon (a hall where the royal portraits are kept) is retaining each other different state according to construction age every moment. Hwaryeong-Jeon among Joseon Dynasty's a hall of royal portraits is the construction form which is equiped well and is known for keeping the form well from the foundation to now And this building is evaluated as the standard form of early part young-jeon building of 19th century. Especially, Hwaryeong-Jeon shows the typical ritual equipments late Joseon Dynasty and at the same time has all kinds of characteristics which only we can find at Hwaryeong-Jeon. Namely, Hwaryeong-Jeon is the building which brings the design concept of the hall of royal portraits to completion as the building which enshrines single portrait of a king. After all, Hwaryeong-Jeon is evaluated as the building which can pass excellent form of late Joseon Dynasty, the hall of royal portraits building just as it is. Therefore, as I study its own style, I expect Joseon Dynasty's mind that enshrined the portrait of a king elaborately to be revealed.

• 전기학회논문지P
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• 제58권2호
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• pp.221-226
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• 2009

In this paper, we analyzed form of flowing leakage current in electrical installation. Leakage current ($I_g$) is consisted of resistive leakage current($I_{gr}$), capacitive leakage current($I_{gc}$), and inductive leakage current($I_{gl}$). Resistive leakage current($I_{gr}$) is big occasion than capacitive leakage current($I_{gc}$) in system, Residual Current Protective Device(RCD) detects correctly leakage current. But,$I_{gc}$ is big occasion than $I_{gr}$, RCD is malfunctioned It is resistance to lead to electric fire in electrical device. We manufactured outlet that resistive leakage current detecting circuit is had. Manufactured outlet displayed performance exactly in leakage current of 5 mA Therefore, this product estimates that contribute on electric fire courtesy call.