• Journal of applied mathematics & informatics
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• v.28 no.1_2
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• pp.509-513
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• 2010

In this paper, we will investigate some properties of strongly reduced near-rings. The purpose of this paper is to find more characterizations of the strong regularity in near-rings, which are closely related with strongly reduced near-rings.

• The Mathematical Education
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• v.46 no.3
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• pp.303-314
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• 2007

In this paper we try to study a method of constructing plane sections of regular tetrahedron and regular hexahedron. In order to construct plane sections of regular tetrahedron and regular hexahedron first of all, we extract some base problems that are used for construction. And we describe construction process using base problems in detail.

• Korean Journal of Mathematics
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• v.14 no.1
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• pp.95-100
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• 2006

In this paper we give some new characterizations of the intra-regular ordered semigroups in terms of bi-ideals and quasi-ideals, bi-ideals and left ideals, bi-ideals and right ideals of ordered semigroups.

• Journal of the Korean Society of School Health
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• v.14 no.2
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• pp.161-175
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• 2001

In order to evaluate the erects of regular health education by a school nurse on a child's health-related knowledge and health-related behavior, a questionnaire survey was conducted with primary school students (4th, 5th, 6th grade) from December 5 to December 15, 1998. Subjects of the study were composed of two groups; one group who had regular health education by a school nurse and the other group who had no regular health education by a school nurse. The results obtained from the data analysis were as follows: 1. There was no significant difference in general characteristics between broth groups, but significant difference in parent-related characteristics and health-related characteristics were detected. 2. The health-related knowledge score was 21.98 in the regular health education group and 21.04 in the control group. There was significant differences between both groups (p<0.05). 3. Significant differences in the practice of health-related behaviors were detected between both groups (p<0.05). 4. The variables associated with the practice of health-related behaviors were regular health education, health-related knowledge, the education level of the mother, ignorance of health and parent's concern about the child's health (p<0.05). 5. The practice of regular health education was significantly related to the prevention of communicable disease, concern about health and total health behavior (p<0.05). From the above results, it can be concluded that there is a positive relationship between regular health education and the practice of health-related behavior after controlling other variables. According to the results, suggestions are as follows; 1. Evaluation of health-related knowledge and behaviors be conducted by the school nurse on pre and post-education. 2. The primary school student can be educated about health by the school nurse.

• Journal of the Korean Mathematical Society
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• v.53 no.1
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• pp.217-232
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• 2016

We make a study of two generalizations of regular rings, concentrating our attention on the structure of idempotents. A ring R is said to be right attaching-idempotent if for $a{\in}R$ there exists $0{\neq}b{\in}R$ such that ab is an idempotent. Next R is said to be generalized regular if for $0{\neq}a{\in}R$ there exist nonzero $b{\in}R$ such that ab is a nonzero idempotent. It is first checked that generalized regular is left-right symmetric but right attaching-idempotent is not. The generalized regularity is shown to be a Morita invariant property. More structural properties of these two concepts are also investigated.

• Journal of Environmental Science International
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• v.17 no.12
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• pp.1315-1324
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• 2008

This study was investigated on the consciousness of middle school students in Jeju city about the environmental education through questionnaire, in order to understand the actual conditions of environmental education and to find out the solutions about them. Middle 'school students responded that environmental education in school was taken at the class for the special activity or voluntary service, not in regular class and was worked as in the form of the field trip. They generally obtain the knowledge and informations on the environmental problems from mass media such as TV, radio and newspaper than from regular environment class in school. And 36.0% of students perceive that environmental education is needed as a regular class and 31.3% of students perceive that the regular class in school is effective to the environmental education. These results suggest that many students are interested in the regular environment class in school. However, the most of students responded that the regular environment class in school is not worked or is not worked at all, suggesting that the environmental education in middle school is not worked effectively. Most of students prefer to take the environment class in the form of observation or field trip, and they think that observation or field trip is more effective to obtain environmental informations. In conclusion, the special activity such as observation or field trip needs to be supplemented to regular environment class in order to improve the environmental education in middle school more effectively.

• The Mathematical Education
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• v.45 no.2 s.113
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• pp.191-204
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• 2006

Computer technology has a potential to change the contents of school mathematics and the way of teaching mathematics. But in our country, the problem whether computer technology should be introduced into mathematics classroom or not was not resolved yet. As a tool, computer technology can be used by teachers who are confident of the effectiveness and who can use it skillfully and can help students to understand mathematics. The purpose of this study was to investigate the effective way to introduce and utilize computer technology based on the status quo of mathematics classroom setting. One possible way to utilize computer technology in mathematics classroom in spite of the lack of computer and the inaccessibility of useful software is using domain specific simulation software like 'Polyhedron'. 'Polyhedron', as we can guess from the name, can be used to explore regular and semi regular polyhedra and the relationship between them. Its functions are limited but it can visualize regular polyhedra, transform regular polyhedra into other polyhedra. So it is easier to operate than other dynamic geometry software like GSP. To investigate the effect of using this software in mathematics class, three classes(one in 6th grade from science education institute for the gifted, two in 7th grade) were chosen. Activities focused on the relationship between regular and semi regular polyhedra. After the class, several conclusions were drawn from the observation. First, 'Polyhedron' can be used effectively to explore the relationship between regular and semi regular polyhedra. Second, 'Polyhedron' can motivate students. Third, Students can understand the duality of polyhedra. Fourth, Students can visualize various polyhedra by reasoning. To help teachers in using technology, web sites like NCTM's illuminations and NLVM of Utah university need to be developed.

• Journal of the Korean Society of School Health
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• v.22 no.2
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• pp.49-59
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• 2009

Purpose : The purpose of this study was to evaluate the effects of regular health education by school nurses on middle school student's health related knowledge, attitude and behavior. Methods : A quasi-experimental design with pretest and posttest measures was used. Questionnaire survey was conducted to middle school students(1st, 2nd year). The participants of the study were composed two groups : 274 in health education group and 336 in control group. Results : After seventeen-week of receiving regular health education, differences were observed between the experimental group and the control group to health knowledge(F=7.901, p=.005), health attitude(F=4.174, p=.042) and health behavior(F=7.675, p=.006). Conclusion : The regular health education by school nurses on middle school students improve their health related knowledge, attitude and behavior. So it is recommended to develop standardized manual and educational materials for providing systematic and effective health education.

• Korean Journal of Health Education and Promotion
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• v.31 no.3
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• pp.27-37
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• 2014

Objectives: This study aims to identify the factors associated with regular medical services utilization of chronic disease patients. Methods: The research selected 4,489 adults aged over 30, diagnosed with hypertension, diabetes, hyperlipidemia, hypercholesterolemia, from the Korea health panel. We analyzed states of regular medical service utilization using descriptive statistics. Multiple regression analysis was used to examine the main factors associated with regular medical services utilization in chronic disease patients. Results: In terms of socio-demographic factors, gender, age, marital status, education level, employment, household income and disability were significantly different between hypertension, diabetes, hyperlipidemia and hypercholesterolemia. Among health status and behavioral factors, number of chronic diseases, subjective health status, smoking, high risk drinking, regular meals, physical activity, obesity were significantly different. From the multiple logistic regression analysis, age, number of chronic diseases, obesity, type of chronic diseases were associated with regular medical services utilization. Conclusions: It is necessary to develop effective health education programs and individualized approach to improve continuous management in chronic diseases patients.

• Korean Journal of Mathematics
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• v.9 no.2
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• pp.99-104
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• 2001

We give the characterization of left(right) semi-regular $po$-semigroups and $Ve$-semigroups.