• International Journal of Reliability and Applications
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• 제15권1호
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• pp.1-9
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• 2014

Let X and $X_t$ denote the lifetime and the residual life at age t, respectively. X is said to be a NBUL (new better than used in Laplace transform order) random variable if $X_t$ is smaller than X in Laplace order, i.e., $X_t{\leq}_{LT}X$. We propose a new test statistics for testing exponentiality versus NBUL class of life distribution. The tests by Hollender and Proschan (1975) and the generalized Hollender and Proschan test by Ains and Mitra (2011) are considered as special cases of the our of test statistics. Our proposed test statistics is simple, consistent and asymptotically normal. Efficiency and powers of the test statistics for some commonly used distributions in reliability are discussed. Finally, real examples are presented to illustrate the theoretical results.

• International Journal of Reliability and Applications
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• 제16권2호
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• pp.113-122
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• 2015

In this paper, we introduce U-statistics approach to generalized Hollander-Proschan test for new better than used (NBUE) alternative. We prove, the proposed test is equivalent to test was introduced by Anis and Mitra (2011) and includes test was introduced by Hollander Proschan (1975). Also, the asymptotic properties are studied. The powers of our test are estimated. The Pitman asymptotic efficiencies of proposed test are also calculated. Finally, the test is applied to some real data.

• 응용통계연구
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• 제32권5호
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• pp.683-692
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• 2019

최근에는 기술의 도움 없이 통계를 가르친다는 것은 상상조차 하기 어렵다. 기술의 발전은 기초 통계학을 가르치는 방식과 교과서의 형태를 바꾸고 있다. 거의 모든 학생들이 항상 모바일 기기를 가지고 다니기 때문에 통계학 교과서를 디지털 형태로 제공한다면 학습자는 언제 어디서든 배울 수 있을 것이다. 또한 스마트폰은 학생들이 강의에 더 집중할 수 있도록 수업시간에 질의응답에 사용될 수 있다. 본 논문은 면대면 강의실에서 전자교과서를 이용할 때 발생하는 데이터를 분석하고 향후 전자교과서의 연구 방향을 제안한다.

• 보건교육건강증진학회지
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• 제15권1호
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• pp.49-66
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• 1998

The general objectives of this study were to develop a health education management information system to effectively deal with community health problems. This study aimed at 1) to development an health education management information system, and 2) to offer computer-based communication channels among the District Health System components such as health center, health subcenters, and community hospital, 3) lastly, to identify the key issues and effectiveness of health education. Major findings of the study were as follows: The major benefits and significances of this information system included: improvement of quality of health education statistics by reducing manual data processing, improvement of productivity of health educators by reducing paper works, improvement of decision-making capability of managers by providing more information for planning, organizing, and evaluating health education programes, and improvement of communication flow among health institutions. Based on the findings of the study, the following are recommended: (1) The health education information system will connect with computerized information systems of various health-related institutions in a district and computer-based communication channels among them, and of the superior agencies in the future. (2) The major functions of the computerized health education program are: to keep client medical records, to inquire about information on the client and his family's history. (3) The program will provide outputs in various forms, such as files for patient records, data on some chronic diseases, information on the patient and his family members, and various kinds of statistics.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제15권2호
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• pp.127-140
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• 2011

"Statistical literacy" is important to be an effective citizen ([Gal, I. (2005). Towards "probability literacy" for all citizens: Building blocks and instructional dilemmas. In: G. A. Jones (Ed.), Exploring probability in school: Challenges for teaching and learning (pp. 39-63). New York: Springer]). Probability and statistics has been connected with real context and can be used to stimulate students' creative abilities. This study aims at identifying the extent that textbooks in three countries include experimental probability concepts and non-routine, open-ended, application and contextual problems. How well textbooks reflect real application situations is important in the sense that students can employ probability concepts when solving real world problems. Results showed that three textbook series did not mention experimental probability. Furthermore, all of text-books had more routine, close-ended, knowing, and non-contextual problems.

• Journal of health informatics and statistics
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• 제42권1호
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• pp.53-62
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• 2017

Objectives: The purpose of this study was to provide the basic materials to form sense of value for health and to emphasize the importance of physical education by comparative analysis of physique, physical fitness, body composition and blood. Methods: The subjects were 188 female college students and they were classified 3 groups by BMI: lower weight group (LWG), normal weight group (NWG), and over weight group (OWG). Results: In the physique, there was significantly high in order LWGNWG, OWG in unbalance of the upper and lower parts of the body, and LWG, OWGNWG, OWG in HDL-C. Conclusions: In the result of this study, it is recognized that regular exercise as well as eating right, life style are needed and offered to take part in the exercise programs for healthy campus life of female college students.

• Communications for Statistical Applications and Methods
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• 제15권2호
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• pp.245-254
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• 2008

제7차 교육과정 개편에 따라 고등학교 수학교과 구성에 있어, 확률 통계관련 내용이 과거에 비하여 양적으로 많이 증대되었다. 따라서 내용적인 측면에서도 확률 통계관련 각 영역이 단원 목표를 제대로 달성될 수 있도록 구성된다면, 정보화 사회에 요구되는 보다 효율적인 통계교육이 이루어질 수 있을 것이다. 이에 본 논문에서는 고등학교 수학교과 중 확률 통계관련 내용이 단원의 학습목표를 달성할 수 있도록 구성되어 있는지를, 제7차 고등학교 수학 교육과정 해설서에 제시된 중심용어와 기호를 중심으로 '연결망분석(network analysis)'을 활용하여 알아보았다. 그 결과 확률변수를 매개로 확률분포에 대한 개념과 통계적 추정에 대한 개념을 연결하는 서술구조는 통계적인 측면에서 매우 잘 표현되어 있으나, '전수조사'와 '표본조사'는 여타의 항목과 연결되지 않는 등, 일부에 있어서는 기술상에 문제점을 내포하고 있는 것으로 나타났다.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제13권2호
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• pp.141-150
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• 2009

This study gives opportunity for investigating how student teachers view the teaching profession and how they transfer their pedagogical knowledge into practice. The aim of the study is to investigate the teaching skills student teachers gained in the assessment of micro teaching of their peers. The participants are 30 mathematics student teachers enrolled in the teacher training program in a state university. Document analysis and semi-structured interviews are the research instruments and inferential & descriptive statistics are used for the data analysis. The findings suggest that the qualitative and quantitative peer assessments of student teachers were graded differently which results from the difference of perceptions about teaching and different conceptualizations of the teaching qualifications.

• Journal of the Korean Data and Information Science Society
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• 제17권1호
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• pp.173-185
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• 2006

In this paper, we propose two methods for setting initial weights in the PLS algorithm which is employed to measure the customer satisfaction in SEM. Using data from the survey of the students conducted with the questionnaire of the ACSI survey, we evaluate the education service in terms of the satisfaction level of the students and compare our proposed methods with the previous method.

• 호남수학학술지
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• 제26권3호
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• pp.309-330
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• 2004

In this paper, we apply the concept of intuitionistic fuzzy sets to theory of semigroups. We give some properties of intuitionistic fuzzy ideals and intuitionistic fuzzy bi-ideals, and characterize which is left [right] simple, left [right] duo and a semilattice of left [right] simple semigroups or another type of semigroups in terms of intuitionistic fuzzy ideals and intuitionistic fuzzy bi-ideals.