• Journal of the Korean Statistical Society
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• 제36권2호
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• pp.275-284
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• 2007

Confidence intervals for the population proportion in a double sampling scheme subject to false-positive misclassification are considered. The confidence intervals are obtained by applying Agresti and Coull's approach, so-called "adding two-failures and two successes". They are compared in terms of coverage probabilities and expected widths with the Wald interval and the confidence interval given by Boese et al. (2006). The latter one is a test-based confidence interval and is known to have good properties. It is shown that the Agresti and Coull's approach provides a relatively simple but effective confidence interval.

• 한국음향학회:학술대회논문집
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• 한국음향학회 1998년도 학술발표대회 논문집 제17권 2호
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• pp.57-60
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• 1998

This paper adopts the psychoacoustical methodology to evaluate the acoustical qualities of rooms and describes some of the results of an attempt to develop such a test. In order to investigate the effect of hall response to subjects, a subjective experiment was performed in artificially simulated sound fields. Pairs of sounds having differences in duration/frequency were presented to a subject and the subject's responses were recorded. The stimuli were varied through an auralization system that simulates three different rooms. It was found that duration/frequency discrimination is influenced by the room conditions and that these discrimination procedures may form the basis for assessment of room acoustics.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2002년도 봄 학술발표회 논문집
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• pp.287-294
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• 2002

Underground flexible pipes for electric cables are subject to external loads and surrounding soil pressure. Particularly, strain of flexible pipes is of great concern in terms of safety and maintenance for electric cables. In this study, the actual size tests were carried out to investigate strain-deformation relation for underground flexible pipes subject to vehicle loads with various depths and degree of compaction.

• Geomechanics and Engineering
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• 제5권3호
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• pp.195-221
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• 2013

A centrifuge model study is carried out to investigate the behavior of pile subject to negative skin friction induced by pile installation, ground water drawdown and surcharge loading. A single end-bearing pile is examined as the induced negative skin friction would induce the most severe stress on the pile structural material as compared to friction piles. In addition, the behavior of the pile under simultaneous negative skin friction and dead/live loads is examined. To facilitate detailed interpretations of the test results, the model setup is extensively instrumented and involves elaborate test control schemes. To further examine the phenomenon of negative skin friction on an end-bearing pile, finite element analyses were conducted. The numerical analysis is first validated against the centrifuge test data and subsequently extended to examine the effects of pile slenderness ratio, surcharge intensity and pile-soil stiffness ratio on the degree of mobilization of negative skin friction induced on the pile. Finally experimental and numerical studies are conducted to examine the effect of applied transient live load on pile subject to negative skin friction.

• 한국수학교육학회지시리즈A:수학교육
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• 제42권2호
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• pp.159-176
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• 2003

From the mid-1990s in Korea, performance assessment has been continuously emphasized in school mathematics and thus many researchers and teachers have been steadily studying this topic. But the concepts relevant to performance assessment and its purposes are very confusing because the mathematics educators' different views and voices are vary. As a result most mathematics teachers experience trouble in executing performance assessment properly and effectively in their math class. This unability for proper execution of performance assessment was once again revealed in this study which dealt with 15 articles on performance assessment. These 15 articles includes almost every article written on the topic of performance assessment that have been published in 4 domestic journals since December 1997. By examining this inability, it is required that its concepts and purposes should be organized with a common view and newly defined in the near future. Therefore, to successfully accomplish this, this paper outlines the basic problems on the understanding of performance assessment as follows: ㆍWhat is the relationship between performance assessment and alternative assessment\ulcorner ㆍWhat is the proper types(methods) of performance assessment\ulcorner ㆍIs the subject test a type of performance assessment\ulcorner ㆍWhat is the difference between subject test and essay test\ulcorner ㆍWhat is the relationship between performance assessment and performance tasks\ulcorner ㆍWhat is the relationship between performance tests and project method\ulcorner ㆍWhat is a project method\ulcorner ㆍIs it assessment standard or scoring standard to score a test result\ulcorner ㆍWhat is the difference between analytic scoring method and holistic scoring method?

• 대한물리의학회지
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• 제16권3호
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• pp.45-53
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• 2021

PURPOSE: The current case study focuses on identifying the effects of the independent application of TECAR therapy and physiotherapeutic intervention using TECAR therapy on pain self-awareness and hip joint function in patients with hip impingement syndrome caused by nonstructural changes. Subjects: The research subject was a 34-year-old woman struggling with acute pain in her left hip, difficulty in actively moving the hip, and a problem in its overall function. METHODS: The subject's pain awareness and hip joint function were measured using a Visual Analog Scale (VAS) and passive range of motion (PROM), respectively. The experimental intervention was carried out in 24 sessions of 16 minutes each, three times a week, for eight weeks. RESULTS: The VAS score decreased to 0 cm on the post-test from 4.3 cm, 6.5 cm, and 7.2 cm in the pre-test at the rest, standing, and gait positions, respectively. The index of PROM measured hip joint flexion, extension, abduction, adduction, internal rotation, external rotation, and passive straight leg raise. The values increased to 122.5°, 24.5°, 78°, 33°, 65°, 42°, and 96.5° in the post-test compared to 88.5°, 15°, 39°, 21.5°, 23°, 22°, and 46.5° in the pre-test, respectively. CONCLUSION: TECAR therapy and physiotherapeutic intervention using TECAR can help reduce pain and enhance the hip joint function in patients with hip impingement syndrome.

• 대한지구과학교육학회지
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• 제8권3호
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• pp.259-266
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• 2015

This study aims to analyze a selective examination for the gifted and talented from a domain-general and special standpoint. For this, we analyzed gifted and talented test results carried out by Gifted and Talented Education institute affiliated with the university of Education located in the central region of South Korea. This test consisted of three sections which are giftedness in the first round, academic aptitude in the second round and interview in the last round. I conducted the analysis of variance of the giftedness test result to the gifted and talented group in each subject from the domain-general point of view. As a result, the each group was not significant. This means that the gifted and talented in each subject has giftedness from the domain-general viewpoint. Secondly, I implemented the analysis of correlation among three test such as giftedness, academic aptitude and interview conducted during the selective process for the gifted and talented. The result was that they had a low or no correlations between them and were not significant. This demonstrated that each test checked a different area. That is, we came to realize that the first, second and third test evaluates a different area and in particular, with the result that the first and second test had a low or no correlations between both of them we realized that they evaluated a different area from a domain-special standpoint. The purpose of this study is meaningful to investigate in terms of how the selective test for the gifted and talented is conducted from a domain-general and special standpoint as a recent study viewpoint about the gifted and talented along with creativity. It is too limited to generalize this result because this test was sampled by one region but, this study indicates that we should take a domain-general and special standpoint into account when it comes to selection for the gifted and talented.

• 한국수학사학회지
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• 제25권3호
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• pp.119-140
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• 2012

본 연구는 교육과정 평가원이 제시한 수학과 교과 내용학 평가 영역 및 평가 내용 요소에 따라 2009학년도부터 2012학년도까지, 중등교사 임용시험에서 출제된 수학과 교과 내용학의 문항을 분석한 것이다. 연구의 목적을 달성하기 위해 4년간 출제된 수학과 교과내용학의 105 문항을 수집하여, 9개 과목 간, 평가 영역 및 평가 내용 요소에 따라 출제된 비율을 분석하였고, 그 결과를 토대로 사범대학 수학교육과 교육과정의 운영이나 평가영역의 재조정에 대한 시사점을 도출하였다. 연구 결과 수학과 내용학의 9과목 간 출제비중에 있어서 현저한 차이가 있으며, 과목별 평가 영역 간에도 출제 비중에 있어서 큰차이가 있는 것으로 나타났다. 평가 내용 요소의 분석에 있어서도 262개 중에서 153개가 4년동안 교사 임용시험에 출제되지 않은 것으로 나타났다. 이러한 분석 결과에 근거하여 수학과 내용학의 출제 과목간의 비중이나 평가 영역 및 평가 내용 요소의 재 조정에 대한 필요성을 논의하였다.

• 한국과학교육학회지
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• 제33권6호
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• pp.1202-1218
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• 2013

본 연구는 교육과정 평가원이 제시한 화학과 교과 내용학 평가 영역 및 평가 내용 요소에 따라 2009학년도부터 2013학년도까지, 중등교사 임용시험에서 출제된 화학과 문항을 분석한 것이다. 연구의 목적을 달성하기 위해 5년간 출제된 화학과 교과내용학 1차 시험 140 문항을 수집하여 4개 과목간, 평가영역 및 평가내용요소에 따라 출제된 비율을 분석하였고, 그 결과를 토대로 사범대학 화학교육과 교육과정의 운영이나 평가 영역의 재조정에 대한 시사점을 도출하였다. 연구 결과 화학과 4개 과목 간 출제 비중에 있어서 현저한 차이가 있으며, 과목별 평가영역 간에도 출제비중에 있어서 큰 차이가 있는 것으로 나타났다. 평가내용요소의 분석에 있어서도 122개 중에서 41개가 5년 동안 교사 임용시험에 출제되지 않은 것으로 나타났다. 이러한 분석 결과에 근거하여 화학과 임용시험의 출제 과목 간의 비중이나 평가영역 및 평가 내용요소에 대한 재조정의 필요성을 제언하였다.

• Environmental Analysis Health and Toxicology
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• 제30권
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• pp.17.1-17.6
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• 2015

Objectives In this study, the possibility of using existing test data provided in Korea and elsewhere for the registration of chemical substances was examined. Data on 510 chemical substances that are among the first subject to registration under the "Act on the Registration and Evaluation, etc. of Chemical Substances (K-REACH)" were analyzed. Methods The possibility of using existing data from 16 reference databases was examined for 510 chemical substances notified in July 2015 as being subject to registration. Results Test data with the reliability required for the registration of chemical substances under the K-REACH constituted 48.4% of the required physicochemical characteristics, 6.5% of the required health hazards, and 9.4% of the required environmental hazards. Conclusions Some existing test data were not within the scope of this research, including data used for registration in the European Union (EU). Thus, considering that 350 of these 510 species are registered in EU Registration, Evaluation, Authorisation & Restriction of Chemicals, more test data may exist that can be utilized in addition to the data identified in this study. Furthermore, the K-REACH states that non-testing data (test results predicted through Read Across, Quantitative Structure-Activity Relationships) and the weight of evidence (test results predicted based on test data with low reliability) can also be utilized for registration data. Therefore, if methods for using such data were actively reviewed, it would be possible to reduce the cost of securing test data required for the registration of chemical substances.