• 대한수학교육학회지:학교수학
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• 제11권4호
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• pp.583-605
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• 2009

본 연구에서는 11명의 초등학교 현직 교사들이 작성한 수학 수업 비평문을 분석하여 수업 비평의 전반적인 특징과 수학 수업 비평의 주요 측면을 조사하였다. 본 연구의 결과, 초등학교 교사들은 수업을 있는 그대로 이해하고 기술하는 동시에 수업을 비평하였으며, 교사들의 수학 수업 비평은 상황적이고 맥락적이고 교과 특수적인 것으로 나타났다. 또한, 초등학교 교사들이 수학 수업 비평에서 주로 주목하는 측면은 수학적 의사소통, 학생들의 수학적 사고 활성화를 위한 교사의 발문, 과제 제시의 적절성, 학생들의 동기 유발, 학생들의 인지 수준에 적합한 구체적 조작 활동, 교사의 수학적 용어 사용 및 수학적 행동의 적절성, 귀납적 추론 경험 제공 등으로 나타났다. 한편, 본 연구를 통해 수업 비평이 현직 교사들에게 갖는 의미를 파악할 수 있었다. 본 연구에 참여한 교사들은 수업을 비평하면서 자신의 수업을 성찰하였으며, 보여주기 위한 수업이 아닌 일상적인 수업의 관찰 및 비평의 의의와 필요성을 지적하였다.

• 대한의용생체공학회:의공학회지
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• 제24권3호
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• pp.151-158
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• 2003

심장혈관 신호에 있어서 단기간의 beat-to-beat 변이(variability)에 대한 여러 연구에서 선형 분석기법들이 사용되었다. 그러나 단기간 beat-to-beat 변이에 대해 선형기법 사용의 타당성에 대한 연구나 선형과 비선형 특성을 비교한 연구는 수행되지 않았다. 본 논문의 목적은 단기간 beat-to-beat 변이의 비선형성 특성을 조사함으로써 선형기법 사용의 적절함을 증명하고자 한다. 이를 위해 선형 ARMA와 비선형 신경망(NN) 모델을 사용하여 예측을 수행하였는데, 과거의 순시 심박(HR)과 평균 혈압(BP)으로부터 현재의 심박과 혈압 예측을 상호 비교하였다. 이러한 예측모델을 평가하기 위해 MIMIC 데이터베이스로부터 HR와 BP 시계열을 사용하였다. 실험결과에 의하면 신경망에 의한 비선형성은 단기간 beat-to-beat 변이를 생성하는 시스템 동특성을 나타내는데 의미있는 역할을 하지 못하였으며, 이 사실은 ARMA 선형 분석기법이 이러한 시스템 동특성을 나타내는데 적절함을 보여주고 있다

• 정보교육학회논문지
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• 제20권6호
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• pp.617-628
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• 2016

초등학교에서의 정보과 교육과정에서의 정보, 정보기기, 운영체제 교육을 위해 국내외 교육과정의 내용체계 등의 선행연구 자료들을 비교 및 분석하여 새로운 개선 및 시사점을 고찰하였다. 그리고 이 내용에 선정에 대한 필요성과 교육 시기, 내용 선정의 적합성을 전문가들을 대상으로 설문하였고, 그 연구결과로 초등학교에서 정보, 정보기기, 운영체제 교육을 위한 교육 내용을 선정하고 성취기준을 마련하여 제안한다. 본 연구 결과는 국가 수준의 초등 정보과 교육과정 개발 및 초등학생들의 핵심 교육역량을 양성하는 것으로 이용할 수 있다. 본 논문은 일부 전문가들을 대상으로 조사한 결과를 분석의 근거로 삼았다는 점에서 결과를 일반화하는 데에는 한계가 있다. 그럼에도 불구하고 초등 정보과 교육과정 영역 내용 성취기준의 적합성 분석을 세부적으로 시도한다는 점과 이를 통해 초등 정보과 교육과정의 안정적인 운영과 초등 정보과 교육과정의 개선에 필요한 정보를 제공한다는 점에서 의의를 찾을 수 있다.

• 유통과학연구
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• 제17권3호
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• pp.107-116
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• 2019

Purpose - Why, why is it difficult to predict the appropriateness of self-employment, and what are the countermeasures and policy proposals to overcome. This study intends to further develop the field of statistical variables. It is necessary to overcome the limitation of existing proper scale research in Korea. We need to find statistical variables that can determine the appropriateness of self-employment in Korea. These efforts will be helpful in evaluating OECD countries and statistics and developing domestic economic indicators. Research design, data, and methodology - It is the discovery of statistical indicators and complementary indicators that have not been revealed in previous studies. Therefore, we sought to find new statistical parameters based on the statistics of the Korea National Statistical Office, the Bank of Korea, and overseas OECD statistics. (Proper Size of Adequacy) is defined as the specific gravity or number of the self-employed in Korea, which is shown as "Out Put" by statistical analysis of STATA panel statistical data. It is possible to further develop variables such as gross domestic product, gross national product, economic growth rate, unemployment rate, income tax rate, consumer price, tax level, exports, import amount, bill default I want to dig. Results - In addition to expanding economic indicators that can be explained by self-employment determinants, we have developed a variety of methods such as linear and non-linear (U-shaped, inverted U-shaped). It is the improvement of the self-employment determinants and the analysis method to estimate the appropriate scale. Conclusions - The proposed contents are reflected in self - employment appropriateness evaluation data and hope to help the government to select the policy support and to evaluate the government business after the policy support. These efforts are expected to be of great help to operators operating their own businesses, and to government and related institutional practitioners who support them. In this way, self-employment will be created in accordance with the Korean situation, where the happy life of all the people becomes the premise and the inclusive economic activities are guaranteed. It will improve the method of analyzing proper scale of small business owners and self-employed in Korea.

• 중환자간호학회지
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• 제11권1호
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• pp.46-66
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• 2018

Purpose : The purpose of this study was to systematically review the instruments utilized to assess physical impairment in post-intensive care syndrome (PICS) of intensive care unit (ICU) survivors. Method : Online databases searched were MEDLINE, Cochrane, CINAHL, and Embase. Studies that met the following criteria were included: 1) the study population exclusively had experience with ICU admission; 2) the study assessed pulmonary, neuromuscular, and physical functions; and 3) the study was published in English language journals after 2007. Results : A total of 56 instruments (2 pulmonary, 25 neuromuscular, 29 physical function) from 94 studies were reviewed. They were classified into self-report, observation, and measurement according to the type of assessment. No instrument measured all 3 areas of physical impairment. Five instruments were originally developed for the ICU patients. The most frequently applied instruments were the Medical Research Council and the 36-item Short Form Survey (physical component summary), which were used in 23 studies each. Only 13.8% of reviewed studies reported the reliability or validity of the instruments. Conclusion : Our results suggest that the appropriateness of instruments assessing physical impairment in PICS cannot be guaranteed. Despite the multidimensional concept of physical disabilities, most studies measured only one area, and studies that reported psychometric properties were limited. Accordingly, we propose to develop a unique and multifaceted instrument for ICU survivors.

• Journal of Information Technology Applications and Management
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• 제19권1호
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• pp.61-83
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• 2012

PMO has gained much interest as an approach to lowering project failure rates. PMO implementation is, however, not an easy endeavor. Many studies have reported that a significant number of PMOs were seen as contributing little to project performance. Local organizations are more likely to be exposed to the failure risk as they tend to heavily depend upon outsourced PMO services. We believe that it is essential for ordering organizations to collaborate with the PMO service firm to come up with a proper PMO governance prior to its implementation. This study is to empirically investigate the effects of PMO governance upon PMO performance and the effects of ordering organization's project readiness upon PMO governance. The study result shows that a proper organizational structure and a properly defined role and responsibility may enhance the PMO performance. And, a correct awareness about PMO and a project management capability were found to be contributing to the appropriateness of PMO governance.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.1555-1561
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• 2011

The dynamic behavior of a bridge under moving loads has been investigated over many years. Especially, with the introduction of High Speed Railway, numerous theoretical studies on the interaction problem between bridges and trains are carried out. In the present study, advanced bridge/train interaction analyses are performed and compared with field tests of a simply-supported 40m long PSC box girder bridge of Kyung-Bu High Speed Railway. Vertical displacements and vertical accelerations of a bridge with increasing speeds are analyzed. In addition, wheel load reduction rates and accelerations of a car-body of the train are investigated for a study of appropriateness of traffic safety criteria of bridge design specification.

• 한국수학교육학회지시리즈A:수학교육
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• 제45권1호
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• pp.25-34
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• 2006

In this paper, we focus on the creative attitude in mathematics as one aspect of mathematical creativity. To measure the creative attitude, we first introduce some prior studies and CAS (Creative Attitude Scale) designed by Noboru Saito in Japan. We develop the CAS-K (Creative Attitude Scale-Korea) including 33 items of 7 factors based on CAS which has 27 items. The factors are fluency, appropriateness, positiveness, independency, concentration, convergency, and accuracy. In CAS-K, it is important to give the information about students' creative attitude for each factor. Thereby, CAS-K can be useful sources of creative attitude to foster mathematical creativity. Rather than the total scores, we emphasize applications and results from CAS-K relating to the 7 factors.

• 대한가정학회지
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• 제36권6호
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• pp.95-108
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• 1998

This study is the second study which was aimed to validate the Infant/ Toddler Environment Rating Scale(ITERS). The test-retest reliability included 10 infant/toddler classes among 30 national/public and private child care centers in Inchon city which had been observed in the first validation study. The Spearman's correlation coefficient for test-retest reliability was ranged from .52 to .84. In addition, two raters observed 10 family day care centers in Inchon city, where two observers independently rated each centers on the ITERS during a single visit. The Spearman's correlation coefficient for interrater reliability was ranged from.72 to .99 For the second measure of content validity, experts who were working in day care centers and who were graduate students, lecturers, or professors majoring child studies rated the appropriateness of each ITERS items for the provision of high-quality programs for infants and toddlers, using a 1(low) to 5(high) scale. The mean rating was ranged from 2.52 to 4.52. In sum, when the rating scores were analyzed by the type of child care centers, national/public child care centers have better quality than private or family child care centers.

• Communications for Statistical Applications and Methods
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• 제22권3호
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• pp.305-312
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• 2015

We extend a generalized partially linear single-index model and newly define a generalized partially double-index model (GPDIM). The philosophy of sufficient dimension reduction is adopted in GPDIM to estimate unknown coefficient vectors in the model. Subsequently, various combinations of popular sufficient dimension reduction methods are constructed with the best combination among many candidates determined through a bootstrapping procedure that measures distances between subspaces. Distinguishing values are newly defined to match the estimates to the corresponding population coefficient vectors. One of the strengths of the proposed model is that it can investigate the appropriateness of GPDIM over a single-index model. Various numerical studies confirm the proposed approach, and real data application are presented for illustration purposes.