• 한국안전학회지
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• 제25권4호
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• pp.61-67
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• 2010

Though "Zero Accident Campaign" is a desirable campaign for industrial accident prevention and reducing victims, the number of industrial enterprises has been decreasing abruptly in recent years. One of the reasons for this phenomenon may be attributed to irrationality of 'target accident-free time periods' established by related organizations. This study was carried out to develop a new rational scheme for the campaign. Therefore, for a numerical basis, Poisson process was introduced, and problems induced by current target periods were analyzed mathematically one by one. As a result, it was verified that current target periods were uneven since the probability that manufacturing plants get them would be different form industry to industry. To develop countermeasures, a brand new method were suggested in this research. The first characteristic was that group classification should be based upon average accident rates resulted from past several years, and the second was that adjustment probability which can make the target acquisition probability even. About the suggested method, a questionnaire survey was conducted. To make a conclusion, most manufacturing plants agreed with the suggested method such high affirmative portion that the suggested method would be expected to help promote the campaign again.

• 수산해양교육연구
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• 제22권3호
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• pp.374-387
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• 2010

This study presumed that pre-service elementary teachers' stereotypical attitude toward foreign groups is critical factor to be considered in the context of Korean multicultural education. 422 pre-service elementary school teachers rated repeatedly seven ethnic groups on thirteen semantic differential scales which consist of four factors; attractiveness-unattractiveness, superiority-inferiority, rationality-irrationality, and aggressiveness-compliance. A series of repeated measure MANOVAs were used to test variability in pre-service elementary school teachers' stereotypical attitude across foreign groups. They rated Japanese the most positive, but Chinese the most negative, and others more or less positive in overall attitude. Their ratings of each ethnic group also varied across four attitude factors. Japanese and Whites were classified into the most attractive and superior, and moderately rational and aggressive groups. In contrast, Chinese were rated as the most unattractive, inferior, irrational, and moderately aggressive one. Southeast Asians were rated as attractive, compliant, and inferior one. In contrast, Arabians were rated as unattractive, aggressive, and moderately superior one. Finally, North Koreans were rated moderately superior, the most aggressive and irrational one. All these findings were discussed in terms of multicultural education in Korea.

• 한국주거학회논문집
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• 제22권4호
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• pp.51-61
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• 2011

This study aimed to grasp trends of the discourse for improving living conditions carried out since 1920's, when the sense for mending the irrationality of conventional living emerged in various magazines. Among the movement, women intellectuals played an important roles to discuss reforming daily life and unhealthy, inconvenient houseworks. This study found the ideological background and direction of this discourse, and estimated its important role for housing improvement, analyzing the contents of articles published in representative womens' magazines of the modern times. In the discourse, they thought that it was most important to make houseworks brief and efficient, and concentrated on building rational environment for houseworks. As reforming kitchen system, heating system (Ondol) should be separated from cooking system to improve hygienic and economical condition of houseworks. Reformed kitchen would be equipped with new installations for effectiveness, lightened by sunlight through windows, and finished floor with cement and drainage for sanitation. Also, they suggested new ways of living, planning modern houses with reformed kitchen system, thinking about moving path and distance of housewives. This discourse would be a foundation to the change of kitchen system up to now.

• 한국강구조학회 논문집
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• 제9권4호통권33호
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• pp.523-533
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• 1997

현존하는 매립형 합성기둥의 한계상태설계법은 합성재로서의 단면과 재료의 성능을 정의하는 설계식에 비논리적이며 모호한 부분을 내포하고 있다. 본 연구는 기존의 설계식을 제정하는데 사용한 과거의 연구자료를 조사하며 비논리적이며 모호한 점들을 분석하였다. 즉, 합성단면으로서의 항복강도와 탄성계수의 환산, 좌굴강도를 산정하는데 영향을 주는 설계식에서 단면2차모멘트 대신에 단면적의 사용. 강재 단면과 콘크리트 단면의 단면2차반경 중에서 큰 값의 적용등을 분석하였다. 본 연구는 기존의 설계식을 개선하며 두 가지 방법의 설계식을 제안하였으며 이 방법들은 실무 설계에 곧바로 적용될 수가 있다.

• 보건의료산업학회지
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• 제12권1호
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• pp.81-93
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• 2018

Objectives : This cross-sectional study aims to investigate the differences in general health status (GHS) and physical care burdens (PCB) of inpatient groups in long-term care hospitals (LTCH). Methods : The data of 228 patients were analyzed by integrating the electronic medical record (EMR) data of 2016, recorded by the nurses of hospitalized patients in the hospital. Results : There was a statistically significant difference in the GHS between the high-medical demand group and the other groups, but there was no difference in the GHS among other groups. The overall PCB was higher in the high-medical demand group than in the middle-medical demand, and cognitive impairment groups, but not in the problem behavioral group. Conclusions : The current classification of patient groups has shown limitations in terms of the basis of differential benefits of the groups. In particular, the PCB of the problem behavior group was not different from that of any group; hence, it should be adjusted through further study. To control the surge of medical care costs, it is necessary to improve the irrationality of the LTCH pay system in terms of the integration and continuity for elderly care.

• 아태비즈니스연구
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• 제13권4호
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• pp.135-149
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• 2022

Purpose - The primary objective of this article is to investigate the impact of U.S. monetary policy on institutional / individual / foreign investor reactions in the Korean stock market. Design/methodology/approach - This study employs a high frequency event study methodology to identify U.S. monetary policy shocks and quantify the impact of identified shocks on investor reactions. The dependent variable in the regression model is net stock purchase, while the explanatory variables are U.S. monetary policy shocks. The model is estimated for the period 2000-2019, including 156 FOMC meetings. Findings - Foreign investors immediately sell stocks in response to contractionary U.S. monetary shocks. They do not, however, react to anticipated changes in monetary policy rates, confirming the rationality of foreign investors. Individual investors demonstrate the opposite response, indicating that a non-trivial proportion of individual investors are irrational. Research implications or Originality - This study adds to the current literature on the effect of U.S. monetary policy on the Korean stock market. This study demonstrates a heterogeneous response to U.S. monetary policy shocks, validating the rational investment behavior of foreign investors, while individual investors exhibit a certain degree of irrationality. Methodologically, this study adds to the literature by quantifying the impact of U.S. monetary policy employing a sharper identification method allowing a simple and consistent estimation.

• 융합보안논문지
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• 제12권5호
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• pp.51-59
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• 2012

본 연구는 민간경비원들의 사건충격이 직무스트레스에 미치는 영향을 심층적으로 분석하고 규명하는데 목적이 있다. 이러한 본 연구의 목적을 달성하기 위하여 2012년 수도권소재 민간경비원 10명을 대상으로 참여관찰과 심층면담분석방법을 이용하였다. 수집된 인터뷰 자료는 컴퓨터를 이용하여 부호화 하였으며, 사건충격, 직무영향, 직무스트레스, 조직생활 등으로 분석하였다. 결론은 다음과 같다. 첫째, 민간경비원들은 업무현장에서 발생된 자살, 테러위협, 상사의 비리 등과 같은 사건충격은 큰 심리적 불안감을 주고 있는 것으로 나타났다. 둘째, 민간경비원들은 과거에 겪었던 사건충격으로 인해 업무에 대한 두려움, 대인기피 증 현상으로 인해 타 업무 분야로 이직하는데 중요한 영향을 미치고 있는 것으로 나타났다. 셋째, 민간경비원들은 과거 자신이 경험한 사건충격으로 인해 상당부분의 직무스트레스를 경험했던 것으로 나타났다. 즉, 과거 사건충격은 고객접점에 직접적인 영향을 미친다. 넷째, 민간경비원들은 과거 사건충격을 극복하지 못할 경우 개인의 조직생활을 감소시키는 것으로 나타났다. 즉, 사건충격은 민간경비 조직문화에서 상사부하간의 신뢰형성 및 팀웍을 감소시킨다.

• 대한수학회지
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• 제44권5호
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• pp.1163-1184
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• 2007

In this presentation dedicated to the tricentennial birth anniversary of the great eighteenth-century Swiss mathematician, Leonhard Euler (1707-1783), we begin by remarking about the so-called Basler problem of evaluating the Zeta function ${\zeta}(s)$ [in the much later notation of Georg Friedrich Bernhard Riemann (1826-1866)] when s=2, which was then of vital importance to Euler and to many other contemporary mathematicians including especially the Bernoulli brothers [Jakob Bernoulli (1654-1705) and Johann Bernoulli (1667-1748)], and for which a fascinatingly large number of seemingly independent solutions have appeared in the mathematical literature ever since Euler first solved this problem in the year 1736. We then investigate various recent developments on the evaluations and representations of ${\zeta}(s)$ when $s{\in}{\mathbb{N}}{\backslash}\;[1],\;{\mathbb{N}}$ being the set of natural numbers. We emphasize upon several interesting classes of rapidly convergent series representations for ${\zeta}(2n+1)(n{\in}{\mathbb{N}})$ which have been developed in recent years. In two of many computationally useful special cases considered here, it is observed that ${\zeta}(3)$ can be represented by means of series which converge much more rapidly than that in Euler's celebrated formula as well as the series used recently by Roger $Ap\'{e}ry$ (1916-1994) in his proof of the irrationality of ${\zeta}(3)$. Symbolic and numerical computations using Mathematica (Version 4.0) for Linux show, among other things, that only 50 terms of one of these series are capable of producing an accuracy of seven decimal places.

• 한국학교수학회논문집
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• 제20권4호
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• pp.495-519
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• 2017

본 연구에서는 실수 e의 다양한 의미와 맥락을 살펴보고, 실수 e에 대한 예비교사들의 이해 정도를 조사하였다. 먼저 실수 e의 역사적 발생과 수학적 의미를 살펴보았으며, 이를 바탕으로 검사지를 개발하여 예비교사 28명에게 적용하고, 그 중 8명에게 반성 및 탐구 활동을 수행하였다. 실수 e에 대한 예비교사들의 이해를 분석한 결과는 다음과 같다. 상당수의 예비교사들이 실수 e의 형식적 정의와 그 표현과의 관계를 인식하지 못하였으며, 실수 e의 표현을 극한 표현에 편중되어 이해하고 있었다. 실수 e의 무리수 속성과 작도 불가능성에 대해서는 대체적으로 적절한 판단을 내렸으나, 그 근거에서는 다소 미흡한 면모를 드러내었다. 또한 실수 e의 연속 복리 맥락과 지수함수 맥락에는 높은 이해도를 나타낸 반면에, 기하적 맥락과 자연로그 맥락을 미흡하게 이해하고 있음을 확인하였다. 향후 예비교사 프로그램의 개선 방향으로, 예비교사들에게 실수 e의 다양한 표현과 속성, 맥락에 대한 학습기회를 제공하고, 실수 e의 다양한 측면이 잘 조직된 관계망 속에서 통합 지도될 필요가 있음을 제시하였다.

• 복식문화연구
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• 제8권3호
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• pp.436-499
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• 2000

The purpose of this study is to be inquired social and cultural significance of the Grotesque phenomenon in the late 1990's make-up, as well as its experimentalism and avantgardism. The Grotesque is the aesthetic concept, which is composed of ambivalent structure of humor and horror, interest and disgust through join of heterogenous factors, distortion, extreme and overstatement in the patterns and materials of make-up. The Grotesque in the modern make-up is represented in the make-up advertisements and collections. In this paper, the author classified the Grotesque phenomenon with the Kitsch, the Machine, the Animal and the Devil, focused on heterogenous factors. The results are as follows. 1. The Kitsch in the make-up uses not cosmetics but imitations, ready-made goods, and ordinary materials. It expresses modern culture's laziness through shocking self-expression. 2. The Machine in the make-up means silver or white color's make-up, and represents cyber period's arrival through contrary irony, loss of the human value and the personifications of machine. At the same time, it is understood as the curing of human alinetion. 3. The Animal in the make-up utilizes the wild animal's horn, the reptiles'sputum, and the legend's animal. It points out a human false virtual image, and overturns make-up's traditional aesthetic concept. 4. The Devil in the make-up shows vampire's cuspid, demon's horn, artificial nail, and black color's make-up. It raises social irrationality and discrepancy of capitalism, and expresses paradoxically the nature of human life. The Devil in the make-up expresses the creator's innovation, anxiety of fin-de-siecle, and simultaneously criticizes and cures confused reality. It shows also avantgarde implementation of dissolution of traditional aesthetic concept and acceptance ugliness.