• Honam Mathematical Journal
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• v.39 no.4
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• pp.677-688
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• 2017

Let P be a finitely generated projective module over a commutative ring R with identity. If P has finite rank, then it will be shown that the map ${\varphi}:Aut_R(P){\rightarrow}U(R)$ defined by ${\varphi}({\alpha})={\det}({\alpha})$ is locally surjective and $Ker({\varphi})=SL_R(P)$.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2003.07a
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• pp.43-46
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• 2003

At SIC 2001, Popescu proposed m efficient group signature scheme for large groups［1］. However, this paper shows that his scheme is to be insecure by presenting a signature forgery. Using our attack, anyone (not necessarily a group member) can forge a signature on a message m, and sine the attacker doesn't have to be the group member, the revocation manager cannot reveal the identity of the signer. Additionally, we modify Popescue's scheme to prevent the forgeary.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.12 s.138
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• pp.1545-1553
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• 2004

This study assumes a bidimensional model of acculturation theory in order to understand the acculturation patterns of Korean-Americans and their fashion and shopping behavior. Bidimensional models of acculturation suggest that acculturating individuals may possess the components of both the heritage culture and the new, host culture. A combination of email and paper and pencil surveys was conducted with a convenience sample of Korean-Americans who are living in Seattle and vicinity area (n=108). The questionnaire included questions related to the respondents' and their parents' demographic information, the respondents perceived relationship with their parents, self-reported ethnic identification, ethnicity-related behaviors/attitudes, clothing involvement, shopping motivations, and fashion reference groups. The results support the bidimensional models of acculturation process as opposed to the linear model. Three different groups among Korean-Americans based on their ethnic identification pattern were found: a group with dominant Korean identity(Segregation group), a group with dominant American identity(Assimilation group), and a group with dual identity(Integration group). According to the results of MANOVA and subsequent Duncan and Scheffe tests, the Integration group showed distinct characteristics from Segregation group or Assimilation group, in terms of their ethnicity-related behaviors/attitudes, clothing involvement, shopping motivations, and fashion reference group influence.

• Journal of Communications and Networks
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• v.11 no.6
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• pp.607-614
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• 2009

Recently, Lu et al. proposed an efficient conditional privacy preservation protocol, named ECPP, based on group signature scheme for generating anonymous certificates from roadside units (RSUs). However, ECPP does not provide unlinkability and traceability when multiple RSUs are compromised. In this paper, we make up for the limitations and propose a robust and efficient anonymous authentication protocol without loss of efficiency as compared with ECPP. Furthermore, in the proposed protocol, RSUs can issue multiple anonymous certificates to an OBU to alleviate system overheads for mutual authentication between OBUs and RSUs. In order to achieve these goals, we consider a universal re-encryption scheme and identity-based key establishment scheme as our building blocks. Several simulations are conducted to verify the efficiency and effectiveness of the proposed protocol by comparing with those of the existing ECPP.

• International Journal of Internet, Broadcasting and Communication
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• v.15 no.1
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• pp.243-253
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• 2023

Social television encompasses the social media aspect of television viewing. This study attempts to investigate how social television influences Hispanic and national ethnic identification as well as social presence. Based on the theoretical framework of Tajfel and Turner's Social Identity Theory (SIT), this study focuses on the potential influence of social television on Hispanics' ethnic identifications and social presence. With a sample of 100 Hispanic students, we conducted a lab experiment to measure the effects of exposure to ethnic and non-ethnic related Twitter feeds on Hispanic and national ethnic identification along with social presence. Findings reveal that there was no significant difference between those exposed to the ethnic-identity related Twitter feed compared to those exposed to the non-ethnic identity related Twitter feed, followed by the control group not exposed to the Twitter feed at all. Implications were discussed.

• The Research Journal of the Costume Culture
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• v.22 no.1
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• pp.42-54
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• 2014

This research used an experimental design in an effort to assess the influence of brand gender and salespeople on the attitudes toward brands according to the males' gender identity traits. The study used a three-way split-plot experimental design, and data were analyzed by t-tests, and ANOVA. The subject of this research was men in their 20s and 30s, and a total of 178 people were selected through convenience- sampling. The findings are as follows: first, masculine male consumers preferred masculinity fashion brands; however, androgynous consumers preferred brands that reflect androgyny. Second, there were no differences in brand attitude according to the gender of the salesperson for the masculinity group, but the androgynous group estimated the brands as better when the salesperson was female. Third, there were no differences in the brand attitudes among consumers according to gender of the salesperson for the Galaxy; however, for Solid Homme, brand preference was stronger when the salesperson was a woman. Fourth, the influence of brand gender and salesperson gender on brand attitudes differed according to the gender of the consumer. Therefore, apparel companies must clearly understand the characteristics of consumer gender identity and execute proper marketing strategies in order to induce stronger positive attitudes toward their brands. Moreover, apparel companies should perceive that brand gender and the gender of the salesperson can consequently encourage brand preferences.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.12
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• pp.8400-8407
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• 2015

The purpose of this study was to understand the subjective perception of Related group's Concerning the Identity of Community Children Center. Q methodology was applied of the study. 23 Q-statements were created based on selected 337 statements and were classified by 40 candidates who related Community Children Center. The obtained data were analyzed by means of PC Quanl program. The result showed that the identity of Community Children Center were classified in 4 types. The types included "Type I: the leading agency for children, families and communities", "Type II: Agency that operated by dedication and commitment" "Type III: Center that complements the family" "Type IV: Systematic operational support standardization is required. In conclusion, the results of the data revealed the importance of the various recognition-types of individuals related to the identity of the community children's center.

• The Journal of the Korea Contents Association
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• v.12 no.12
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• pp.212-222
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• 2012

From the social work practicum, social welfare major students learn practical works in the field and cultivates professional ability. Furthermore, he tries to find his fitness and own qualification as a social worker. The purpose of this study is to examine the effects of supervision characteristics of social work practicum on the social welfare major student's career development. For the research, a survey of 212 students having had experience of social work practicum was conducted. The major findings in this study were as follows; Most of supervisors were female, the frequency of the supervision were regular, and supervision was offered mainly in the form of group or group and individual mixed. Students evaluated the relationship between supervisors and student was 3.20/4, supervision satisfaction measurement was 3.03/4, and students showed low level of career identity(5.80/12). By the hierarchical multiple regression, career identity was mostly affected by supervision characteristics, relationship between supervisors and student, and supervision satisfaction. This study finally discussed theoretical implications for future study and practical implications for career identity strategies on the results.

• Journal of the Korean Institute of Rural Architecture
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• v.24 no.3
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• pp.1-11
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• 2022

Purpose: This place, which is currently becoming an issue due to historical preservation and landscape protection, is also a place where urban residents around Taereung actually visit often. Thus, this study aims to analyze the importance of the evaluating factors in creating a relatable image of the city. Methods: Evaluation items were selected by reviewing related books and research literatures and reassessing the reviewed items through an expert group interview (FGI). For the selected evaluation items, the relative importance of the evaluation items for the place image was analyzed by applying the hierarchical analysis technique (AHP) to each user group. Result: A place becomes a memory in people's experiences and time, and it has the image and identity of the region where those experiences and memories are found again as a space called "place". The method of analyzing the importance of evaluation items between place images used in this study quantified the factors recognized as abstract images and identified the degree of influence between elements, but has limitation in that it targeted specific places. However, the analysis method on the place image recognition suggests the use of itemized variables for characteristics between place images, so future research on the identity of other place images can be conducted together. Also, the evaluation method of the image that recognizes the place has an objective meaning in that it can measure the image of the place quantitatively. In the future, it can be applied in creating an image forming factor or urban identity for place recognition in many regions

• The Journal of the Korea Contents Association
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• v.15 no.10
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• pp.173-183
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• 2015

This study has analyzed the factors that influence the unification perception of adolescents. To achieve this, 399 adolescents who live in Gyeonggi, Chungnam and Chungbuk area were selected as study subjects. For the data analysis, PASW Statistics 18.0 was used. The main results of this study are as follows: First, the level of unification perception of general and multi-cultural family adolescents were 3.22 and 2.96 respectively showing that general adolescents were significantly higher. Second, the factors that influence the unification perception were shown to be same for each group, but significantly different for their influence of each group. The factors that influence the unification perception of general adolescents were shown in the order of national identity, unification education, exclusion of school life. The factors that influence the unification perception of adolescents in multi-cultural family were shown in the order of exclusion of family relationship, national identity, exclusion of school life. Third, in the relationship between social exclusion and unification perception, buffering effects of national identity were identified to be different in each group. Based on these results, several ways were suggested to improve the unification perception of adolescents.