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철근이 부식된 철근콘크리트 슬래브의 구조성능 평가에 대한 실험적 연구
정은철 ( Jung¸ Eun-chul ),이경언 ( Lee¸ Kyoung-un ),정란 ( Chung¸ Lan ) 한국구조물진단유지관리공학회 2000 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.4 No.2
With the exhaustion of river aggregate which have been used as main resource of aggregate, sea sand have been used. However sea sand without removal of salt cause corrosion of embedded. This study is aimed at providing the data for basic design data of corroded reinforced concrete by testing various corrosion level over 5% specimens.
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김주택,정은철 한국산학경영학회 2003 산학경영연구 Vol.16 No.-
최근 세정환경의 변화로 납세자에 대한 서비스의 제공 등 많은 개혁을 시행하고 있으나 합리적이고 효율적인 세정을 위한 개혁조치는 납세자와 직접적으로 접촉하는 세무조사가 중심이 되며 이에 부합되는 공정하고 투명한 세무조사가 이루어지려면 세무조사와 관련한 제반절차의 합법성과 세무공무원의 전문성 및 투명성이 선행되어야 할 것이다. 본 연구에서는 효율적이고 합리적인 세무행정을 위하여 세무조사에 대한 선행연구와 각종 참고문헌을 통해 세무조사의 이론적 측면과 주요 국가의 세무조사제도 및 우리나라 세무조사세도의 개선방안은 다음과 같다. 첫째, 세무조사대상자 선정에 있어서 선정위원회(가칭)와 외부인사 등을 참여하는 제도를 법제화하여 객관성 있는 선정제도의 틀을 마련하여야 할 것이다. 또한 매년 초 공개한 선정기준에 의해 엄중한 세무조사를 실시하고, 연중 실시한 세무조사 결과 자료를 공개하고 피드백 시켜 익년 세무 조사선정기준을 정하는데 활용하도록 한다. 둘째, 세무조사평가방법에서는 조사실적에 대한 통제제도의 개선, 정기조사 심사분석 개선, 평가제외 규정을 확대함으로써 세무조사요원들이 실적에 부담을 갖지 않고 정확하고 공정한 세무조사를 할 수 있게 하여야 한다. 세무조사 대상자 선정위원회에서 세무조사대상자를 선정하는 명확한 규정을 법제화함으로써 세무조사에 대한 인식이 바뀌게 될 것이고, 세무조사를 시행하는데 실적위주의 부담이 줄어들게 되면 조사위원들은 보다 편한 마음에서 정확한 세무조사를 시행할 수 있게 될 것이다. Most of the taxes in Korea are collected using a voluntary reporting payment system that meets most financial requirements. However, many people are unaware of their tax liability, and legal forces to ensure payment of taxes are weak within the Korean social structure. Therefore, the tax system cannot depend only on people's awareness of their tax liability, and for these reasons the Korean government has been investigating a system for fair taxation and the administrative punishment for tax evasion. In addition, an improvement to the taxation system is strongly demanded in order to protect taxpayers' rights, and improve the efficiency and rationality of the system. In this study, I compare and analyze the problems related to each nation's tax investigation system, and then propose an improved plan for a tax investigation system in Korea. It is necessary to prescribe in the bylaws of the Office of National Taxation that the investigator's performance rating or incentives are not affected in any way by the tax investigator's actual records on tax collection, as this type of evaluation can easily lead to conflicts with the primary goals of the law or written constitution.
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정신분열병환자의 뇌량에 대한 신경병리적 고찰 : 확산텐서영상(Diffusion Tensor Image)기법의 적용
이경진,신용욱,하태현,이종민,김인영,김선일,문원진,정은철,박해정,오정은,박지영,강경훈,권기원,권준수 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.4
Objectives : Diffusion tensor imaging (DTI) is a new technique that can be used to visualize and measure the diffusion of water in brain tissue. It is particularly useful for evaluating white matter abnormalities. In this paper, we investigated the neuropathology of the corpus callosum in patients with schizophrenia through the new methods, diffusion tensor imaging. Methods : Diffuse tensor imaging was performed in 19 schizophrenic patients and 26 healthy controls. One complementary measure, fractional anisotropy (FA), which is considered to be sensitive indices of axonal integrity, was obtained from regions of interest in the five areas of the corpus callosum. Neuropsychological measurement also underwent for measurement of frontal lobe function in two groups. Results : There were no significant differences of FA in the DTI measures for either the schizophrenic patients compared with controls. FA was significantly decreased in women compared with men. Neuropsychological measurements such as Wisconsin card sorting test were correlated with FA of patients with schizophrenia. Conclusion : FA measures revealed no differences between schizophrenia and controls. The findings suggest that the structural integrity of white matter in patient with schizophrenia was not disrupted. The results are discussed in relation to previous studies reporting positive and negative findings. It is concluded that further studies using DTI in larger samples, improved and standardized methods of data acquisition and analysis are needed.
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이경순,류지아,송인옥,정혜원,안정자,손영수,정은철,우복희 梨花女子大學校 醫科大學 醫科學硏究所 1993 EMJ (Ewha medical journal) Vol.16 No.2
The diagnosis of cervical incompetency Is routinely accomplished by reviewing the clinicalhistory and pelvic examination subjectively. Rescently by using ultrasonography. the objectivemethod in diagnosis of cervical incompetency was developed. Especially, the transvaginal sonog-raphy can provide clear visualization of uterine cervix with an empty bladder without distrosionof cervix which was developed when abdominal sonography with distended bladder. So author performed the study in 46 cases of pregnant women of which menstrual agewas 12 weeks to 36 weeks(normal control group 36 cases, risk group 11 cases) during theperiod of May, 1992 to Febburary, 1993. And these two groups were performed trasvaginal sonog-raphy and measured length and diameter of cervix. And the result were follows ; 1) The mean age was higher in risk group than normal control group. the gestational agewas not significantly different between two groups, and the gravity and parity was higher inrisk group than normal control group. 2) As rneasuring the lengt and diameter of cervical canal by transvaginal sonogram innullipara and multipara in normal control group, each measurements were not significantlydifferent between nullipara and multipara. 3) The mean length of cervix by transvaginal sonography was 3.0±0.97cm in risk group,4.7±0.89cm in normal control group and the cervical length was significantly shorter in riskgroup than normal control group(P<0.01). 4) The mean diameter of cervix by transvaginal sonogram was 2.0±0.37cm in risk group,0.5±0.21cm in normal control group and the diameter of cervix was significantly greater inrisk group than normal control group(P<0.01). Transvaginal sonographic measurement of cervical length and diameter in diagnosis of incompetent internal os of cervix is noninvasive and relatively objective method.
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