• 대한수학회지
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• 제51권4호
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• pp.751-771
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• 2014

We study the structure of idempotents in polynomial rings, power series rings, concentrating in the case of rings without identity. In the procedure we introduce right Insertion-of-Idempotents-Property (simply, right IIP) and right Idempotent-Reversible (simply, right IR) as generalizations of Abelian rings. It is proved that these two ring properties pass to power series rings and polynomial rings. It is also shown that ${\pi}$-regular rings are strongly ${\pi}$-regular when they are right IIP or right IR. Next the noncommutative right IR rings, right IIP rings, and Abelian rings of minimal order are completely determined up to isomorphism. These results lead to methods to construct such kinds of noncommutative rings appropriate for the situations occurred naturally in studying standard ring theoretic properties.

• Journal of applied mathematics & informatics
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• 제39권5_6호
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• pp.751-760
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• 2021

We study in this paper the right Rényi mean for a quantum divergence induced from the α - z Rényi relative entropy. Many properties including homogeneity, invariance under permutation, repetition and unitary congruence transformation, and determinantal inequality have been presented. Moreover, we give the identity of two right Rényi means with respect to tensor product.

• 한국컴퓨터정보학회논문지
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• 제21권3호
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• pp.123-128
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• 2016

This study aims to analyze the causal relation between identity and school adaptation of multicultural family children, starting from necessity of empirical research considering insufficient preceding research. To achieve the purpose of the research, this study implemented empirical analysis regarding the causal relation between factors of self-identity and school adaptation. As a result, factors of self-identity implies significant effect on school regulations, while factors of school adaptation partially have an effect on school class and relations with a teacher and friend. Based on the result of verification, this study emphasizes teachers' effort as well as comprehensive and practical development of an educational program to help children from multicultural family establish the right self-identity for settling into school life. Moreover, the limitation of this study and future research direction is presented.

• 대한수학회논문집
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• 제37권1호
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• pp.57-64
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• 2022

In this paper, we show, among others, that if A is a Banach algebra satisfying a functional identity involving a b-generalized derivation F on A, under some mild conditions, is of the form F(x) = ax for all x ∈ R, where a ∈ Q_r, a right Martindale quotient ring of A.

• 한국통신학회논문지
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• 제30권10B호
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• pp.648-659
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• 2005

인터넷에 산재되어 있는 사용자 개인정보의 오남용은 더 이상 간과할 수 없는 문제이다. 개인정보의 유통은 반드시 소유자의 허가 하에서만 이루어져야 하고, 개인정보를 관리하는 사이트는 인터넷에 익숙하지 않은 사용자들에게 개인정보 유출에 관한 두려움을 없애줄 수 있는 환경을 제공하여야 한다. 본 논문은 인터넷 Identity 관리시스템에서 개인정보를 안전하게 관리하고 유통할 수 있는 기술을 소개한다. 개인정보의 소유자가 자신의 정보를 관리하는 방법, 정보 관리 시스템 차원에서 사용자 정보를 관리하기 위한 정책, 개인정보 접근을 제어하는 Privacy Controller 등 여러 관점에서의 프라이버시 인가 기술을 제안한다. 그리고, 정책 기반의 프라이버시 인가 기술을 인터넷 Identity 관리 시스템에 적용하기 위한 다양한 모델을 제시한다.

• 농촌계획
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• 제16권4호
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• pp.23-32
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• 2010

Recently, there are many people who live in rural keep getting away from their town. The reason why become aging and reducing society in Rural is weakness of agricultural competition, education, culture and welfare. Thereupon, we need counter plans to make boom in exhaustion rural landscape counter plan, losing consciousness of citizenship, over developing from city planners who are giving serious damage to rural landscape. However, there are many promotions going on to cover weakness of rural. In this research, to set up the right view of rural which considered the different cognitions, it is important to derive each preference or non-preference scenery, and countrified or non countrified scenery. From different cognition, finding preserved and improved factors is necessary to preserve, reform, and improve the countryside scenery. Based on this, to investigate natural characters of viewpoint is providing right direction for future rural landscape.

• ETRI Journal
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• 제34권2호
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• pp.235-244
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• 2012

An identity-based strong designated verifier signature scheme provides restricted verifiability only for a verifier designated by a signer and proper privacy for the signer. In this paper, we show that strong designated verifier signature schemes do not satisfy the self-unverifiability requirement in the sense that not only exposure of the verifier's secret key but also of the signer's secret key enables an attacker to verify signatures, which should have been the exclusive right of the verifier. We also present a generic method to construct a strong identity-based designated verifier signature scheme with self-unverifiability from identity-based key encapsulation and identity-based key sharing schemes. We prove that a scheme constructed from our method achieves unforgeability, non-transferability, and self-unverifiability if the two underlying components are secure. To show the advantage of our method, we present an example that outputs short signatures and we analyze its performance.

• 간호행정학회지
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• 제11권3호
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• pp.289-301
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• 2005

Purpose: This study was to examine the ego-identity of nursing students and their adjustment to home and university in an effort to identify the correlation of their ego-identity to their adjustability and lay the foundation for providing better personality education to them. Method: The subjects in this study were 400 nursing students at H and S universities in south Chungcheong province. The instruments used in this study were Park A-cheong(2003)'s Korean-version Ego-Identity Inventory and Jeong Jonggweon(1998)'s Home and School Adjustment Inventory. For data analysis, SPSS/PC+ Package was used, and statistical data on frequency and percentage were obtained. Besides, t-test, one-way ANOVA and Pearson correlation coefficient were employed. Result: The findings of the study were as follows: The nursing students investigated got a 3.46 and 3.53 in ego-identity and family life adjustment respectively out of possible five points, which were both above the average. Their score in school adjustment was 2.89, which wasn't high. As for connections between general characteristics and ego-identity, their academic school year, their type of residence, presence or absence of parents and their birth order made no statistically significant differences to their ego-identity. But as to motivation of choosing nursing, the students who chose their major at their own option were the best in that regard. Their adjustment to family life made no significant differences, and regarding school adjustment, ego-identity was better among those who lived in a lodging house or dormitory(F=4.01, p<.05) and who chose their major at their own option(F=4.88, p<.01). In addition, those with better ego-identity were better adjusted to home and school. Conclusion: As the above-mentioned findings suggested that nursing educators should teach students by mapping out specific plans to enhance the ego-identity of students and facilitate their school adjustment, and full-fledged nurses should be produced by teaching students to build the right work ethics and become qualified as a professional.

• 한국콘텐츠학회논문지
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• 제12권7호
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• pp.156-168
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• 2012

최근에 강도, 살인, 강간 등 강력범죄의 발생이 사회적 문제로 대두되면서, 추가적인 범죄피해의 예방과 국민의 알권리의 보장을 위해 범죄인에 대한 신상공개제도를 입법화하고 이를 확대하려는 경향이 대두되고 있다. 이러한 분위기는 재판절차를 통해 형이 확정되지 아니한 특정 범죄의 피의자의 얼굴 등 신상을 수사단계에서 공개하는 입법을 가능하게 하여, 피의자의 얼굴 공개를 허용하는 것을 뼈대로 한 '특정강력범죄 처벌에 관한 특례법 개정안'이 2010년 4월 국회에서 통과되었다. 그러나 특정 강력범죄에 대한 신상공개가 범죄피해의 예방에 큰 효과가 있다는 사실이 경험적으로 확인된 바가 없을 뿐만 아니라, 법원의 판결이 있기도 전에 피의자의 신상정보가 언론에 공개됨으로써 헌법이 보장하고 있는 피의자의 프라이버시나 인격권 및 공정한 재판을 권리와 같은 기본권을 침해하는 것일 뿐만 아니라, 헌법상 무죄추정의 원칙, 적법절차의 원칙, 이중처벌금지의 원칙(일사부재리의 원칙), 명확성의 원칙, 과잉금지의 원칙에도 위배되고, 형법상 책임원칙에도 위배된다 할 것이다.

• 한국학교보건학회지
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• 제19권1호
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• pp.31-43
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• 2006

Purpose: The purpose of this study was to identify the effects of sex education on middle school boys' perception about obscene materials and self identity. Methods: This study was employed, using pretest-posttest of nonequivalent control group design. Data were collected from April 1st to May 14th, 2005. The subjects were recruited from two middle boys' school in Incheon which have similar class accomplishments and financial statues. Sampling method was used 70 students were assigned to experimental group and 74 students to control group. The 45 minutes sex education was given 4 times within 3 weeks to the experimental group. Four weeks later after education has finished, post test was done. The data were analyzed using Chi test, Fisher's exact test and t -test by SPSS. Results: The 1st hypothesis 'The experimental group which received sex education will have a higher score of perception about obscene materials than control group' was supported(t = 3.370, p = .001). The 2nd hypothesis 'The experimental group which received sex education will have a higher score about self identity than the control group' was supported(t = 1.997, p = .048). Conclusion: This study showed that sex education effectively helps middle school boys to have right perception about obscene materials and to promote self identity.