• Tuberculosis and Respiratory Diseases
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• v.44 no.3
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• pp.574-582
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• 1997

Background : Normal humans meet the increased ventilatory need during exercise initially by the increase of tidal volume (TV) and later by the increase of respiratory frequency (Rf). And the inspiratory duty cycle (Ti/Ttot) is also increased more than 50% for the compensation of the decrease of respiratory cycle provoked by the increase of respiratory frequency. The patients with chronic airflow obstruction show rapid and shallow breathing pattern during exercise because of the decreased ventilatory capacity and the increased dead space ventilation. However, the studies about the change of inspiratory duty cycle are only a few and there is no literature about the relationship between the change of inspiratory duty cycle and the degree of airflow obstruction. Methods : The subjects were the twelve patients with chronic airflow obstruction (CAO) and ten normal people. The incremental exercise test was done. The increase of work load was 10 W in CAO group and 25 W in normal control group. The analysis of the results was done by the comparison of the parameters such as minute ventilation (VE), TV, Rf, physiologic dead space (Vd/Vt), and inspiratory duty cycle between the two groups. Each parameters were compared after transformation into % control duration base that means dividing the total exercise time into five fractions and % control duration data were obtained at rest, 20%, 40%, 60%, 80%, and max. Statistical analysis was done by repeated measure ANOVA using SAS program. Results : The changes of VE and TV were significantly different between two groups while the change of Rf was not significant. The decrease of Vd/Vt was significantly low in CAO group. Ti/Ttot was markedly increased from 38.4 + 3.0% at rest to 48.6 + 4.5% at max in normal control group while Ti/Ttot showed little change from 40.5 + 2.2% at rest to 42.6 + 3.5% at max. And the change of inspiratory duty cycle showed highly good correlation with the degree of airflow obstruction (FEV1%). (r=0.8151, p < 0.05). Conclusions : The increase of Ti/Ttot during exercise observed in normal humans is absent in the patients with CAO and the change of Ti/Ttot is well correlated with the degree of airflow obstruction.

• Journal of Families and Better Life
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• v.13 no.2
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• pp.94-102
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• 1995

본 연구에서는 가사노동의 책임이 취업여성들의 임금수준에 어떠한 영향을 미치는 지를 연구하기 위해 가사노동의 책임이 거의 없는 미혼여성과 가사노동의 책임이 큰 기혼여 성사이의 취업성향과 임금수준을 비교분석하였다 미국의 NLS Young Women 데이터를 이 용하여 평균과 표준편차 및 백분율을 구하였고 Probit 분석과 최소자승법에 의한 희귀분석 을 SAS Program을 이용하여 분석하였다 가사노동책임관련변인은 기.미혼여성의 지속적인 전일제 근무자가 될 가능성에 별로 영향을 미치지 않는 것으로 나타났다 회귀분석결과 결혼 여부나 가사노동의 책임등은 임긍에 유의한 영향을 미치지 않았고 인적자본관련변인은 임금 에 긍적적인 효과가 있었으며 직업차별화변인은 여성지배직종에 근무하는 여성의 임금을 낮 추는 것으로 나타났다 본 연구결과 가사노동책임으로 인하여 기혼여성이 미혼여성보다 취업 하는 비율이 낮기는 하지만 그것을 취업주부의 임금이 낮아야하는 원인으로 보기에는 어렵 고 직업차별화가 여성들의 저임금의 이유일수있음을 알수 있다 따라서 여성 스스로 여성지 배직종을 선택하는지 그리고 그러한 결정에 의하여 낮은 임금을 받는지에 대새허는 후속연 구가 필요하리라 본다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.13-14
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• 2016

Many ships' collision accidents occur due to unlawful action at sea. And also at shore traffic, many car collision accidents occur due to unlawful action. Therefore In this study we analyzes actual collision accidents at sea with the regards of liability. and search and analyze similar car collision accidents at shore traffic to compare it with the ship collision. In result, this study suggests the liabilities of the two different types accidents are needed to change more reasonable liability apportionment.

• Management & Information Systems Review
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• v.31 no.3
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• pp.117-139
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• 2012

The purpose of this study is to examine of transparency and Corporate Social Responsibility(CSR) on financial performance and firm value. The empirical results are as follows: First, we finds that ROA showed significant effect of all transparency measures exception QAS measure and Tobin's Q showed significant effect of CITSA, SCTSA, SETR and SATSA. Second, 'Total-ROA' and 'ROA' models showed significant positive effects of lnCSR(TranD${\times}$lnCSR) and ROA, also 'Total-Tobin's Q' and 'Tobin's Q' model had same results. Consequently, this study results had that The firms with higher transparency and higher CSR exhibit better financial performance and firm value.

• Korea journal of population studies
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• v.27 no.2
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• pp.91-120
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• 2004

이 연구는 취업여성을 대상으로 추진되고 있는 한국 보육정책의 특성을 분석한다. 우선 취업여성을 대상으로 하는 기존 보육정책의 규정들은 무엇보다 성 평등의 관점에서 볼 때 불완전하다. 취업여성의 육아가 사회의 책임, 남녀공동의 책임이라는 인식에 못 미치고 있다. 둘째, 기존 보육정책은 일반적인 취업여성의 대리보육 지원을 표방하고 있지만 실제적으로 저소득층 영${\cdot}$유아, 영아보다는 유아에 대한 보육지원에 역점을 둠으로써 취업여성의 실제 보육수요를 충족하지 못한다. 셋째, 정부는 강제적 규정, 재정지원의 확대라는 조치들을 통해 취업여성의 보육을 지원하고 있으나 그 수준은 그렇게 강력하지 못하다. 넷째, 정책결과의 관점에서 볼 때, 그동안 보육시설은 상당한 정도로 증가하였으나 공공보육시설, 직장 보육시설의 비율은 매우 낮다. 육아휴직 정책 역시 전체적 이용률이 낮은 수준이며, 남성의 이용률은 특히 낮은 것으로 나타난다. 기업체 및 근로자의 보육실태에 대한 사례조사 결과에서도 취업여성의 육아부담은 여전히 매우 높으며, 특히 가족에 의한 대리보육 비율이 높은 것으로 나타난다. 이 연구의 정책적 함의는 보육정책이 취업여성의 육아부담을 경감하여 고용평등을 제고하고, 출산율 향상을 도모하는 방안과 연계되기 위해서는 정책의 보완이 요구된다는 것이다.

• Journal of Digital Convergence
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• v.15 no.10
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• pp.151-160
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• 2017

Giving behavior can be defined to be a behavior intended to benefit the society's charity works and public works via sharing one's financial resources. The determinants of giving behavior largely consist of sociodemographic factors, such as the income, age, gender, religion, education level, residential areas, and tax deduction policy, etc. This paper considers the income level, self-esteem, and perceived responsibility toward social welfare, as the major research variables. Statistical results, based on 2014 Korean Welfare Panel data, show that the income level and self-esteem have positive influence on participation intention in charitable giving. However, welfare responsibility has negative impact on participation intention. Second, household income was the only salient, negative factor for giving efforts defined as the amount of donation over income, implying that the higher income brackets are giving less money relative to their income level, than those with lower income level. Contrary to our expectation, self-esteem and welfare responsibility were not statistically significant explanatory variables.

• Communications for Statistical Applications and Methods
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• v.15 no.1
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• pp.105-115
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• 2008

Judgement post-stratification is a new sampling method developed by MacEachern et al. (2004). This article suggests that the judgement post-stratification method can be a good alternative for the simple random sampling when analyzing real-world environmental data. It becomes an important task to accurately measure the output of a recycling facility since the EPR (Extended Producer Responsibility) system takes effect on 2003. However, the total weight of materials processed in the recycling facility may not be a proper measure because the materials are frequently mingled with other non-recycling materials. Therefore, it is necessary to estimate the mixture ratio of non-recycling materials among the total materials admitted in the facility. Unfortunately, the size of sample in a recycling facility is restricted due to the inconvenience of sampling procedure such as safety, odor, time and classification of non-recycling materials. In this article, we showed the relative efficiency of the judgement post-stratification method over the simple random sampling method for equal sample sizes using Monte Carlo simulation. Furthermore, we applied the judgement post-stratification method on the 2004 recycling data and showed that it can replace the simple random sampling even with smaller observations.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2001.11a
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• pp.213-218
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• 2001

제품 생산자가 폐기물 수거 책임을 위해 수거비를 정부에 지불하는 경우와 자체적으로 정부 인정하에 수거 폐기하는 경우가 있는 것으로 분류되고 있다. 2001년 국내 굴지 5대 음료회사에서 정부와 합의한 것 중 하나가 자체 생산제품의 폐기처분 비율을 정부에 지불하지 않는 대신에 자체적으로 폐기하도록 합의하였다.(중략)

• Korean journal of communication and information
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• v.46
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• pp.108-147
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• 2009

This study explores the news frames on the U. S. beef imports and candlelight vigils covered by the two national dailies such as ChosunIlbo and the Hankyoreh Shinmun; the KwangwonIlbo, a local daily. The news frames extracted based on the models of Iyengar(1987), Semetko & Valkenburg(2000) and other researchers are attribution of responsibility, economic sequences, protest against the authorities, national health and governmental public relations and so on. The result shows that the news reports are consisted of the straight news(75.9%), feature stories(11.7%) and editorials(6.3%). More specifically, there is a comparatively hight ratio of editorials(11.0%) for the ChosunIlbo, feature stories(20.9%) for the Hankyoreh, and the straight news(89.7%) for the KwangwonIlbo. In terms of the news frames stressed by the three dailies, the ChosunIlbo focuses and stresses on the national health(17.8%) and the attribution of responsibilities(10.6%). However, the Hankyoreh have a tendency to stress on the protest against the authorities(31.3%) and attribution of responsibilities(38.4%); the KwangwonIlbo, focuses on the protest against the authorities(38.4%) and the economic sequences(17.9%). Finally, in the case of the main characteristics of the dailies, the governmental public relations frame is found only on the ChosunIlbo that has a comparatively high ratio; the Hankyoreh also has a high ratio of the feature stories on the U. S. beef imports. Even thought the KwangwonIlbo has a high ratio of the economic sequence frame, the ratio of opinion pages, such as editorial and columns, the local newspaper has not spoken up for the potential economic crisis of the local Kwangwon province beef industry, mainly caused by the U. S. import beef.

• Journal of Advanced Marine Engineering and Technology
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• v.40 no.9
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• pp.859-867
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• 2016

Bunker oil is an essential expense, and it is a high cost in ships' operations. Therefore, it forms an important part of the work shipowners do to minimize losses during operations. With bunkering disputes consistently occurring, bunker surveyors could be employed by shipowners through them and bunker survey companies signing a contract for a bunker surveyor service. Bunker surveyors could play the role of independent contractors and issue statements of fact in relation to bunkering. However, it would be impossible for bunker surveyors to immediately resolve a bunkering dispute since their role and the legal status is not clear while bunker surveys are being conducted on ships. Thus, this study sets out to define the legal status and liability of bunker surveyors and to seek an additional role for them when bunkering disputes occur.