• Title/Summary/Keyword: Identity Theory

Search Result 477, Processing Time 0.028 seconds

THEORETICAL STUDIES ON FRICTION DRAG REDUCTION CONTROL WITH THE AID OF DIRECT NUMERICAL SIMULATION - A REVIEW

  • Fukagata, Koji
    • Journal of computational fluids engineering
    • /
    • v.13 no.4
    • /
    • pp.96-106
    • /
    • 2008
  • We review a series of studies on turbulent skin friction drag reduction in wall-turbulence recently conducted in Japan. First, an identity equation relating the skin friction drag and the Reynolds shearstress (the FIK identity) is introduced. Based on the implication of the FIK identity, a new analytical suboptimal feedback control law requiring the streamwise wall-shear stress only is introduced and direct numerical simulation (DNS) results of turbulent pipe flow with that control is reported. We also introduce DNS of an anisotropic compliant surface and parameter optimization using an evolutionary optimization technique.

Research on Turbulent Skin Friction Reduction with the aid of Direct Numerical Simulation

  • Fukagata, Koji
    • 한국전산유체공학회:학술대회논문집
    • /
    • 2008.03a
    • /
    • pp.347-354
    • /
    • 2008
  • We introduce a series of studies on turbulent skin friction drag reduction in wall-turbulence. First, an identity equation relating the skin friction drag and the Reynolds shear stress (the FIK identity) is introduced. Based on the implication of the FIK identity, a new analytical suboptimal feedback control law requiring the streamwise wall-shear stress only is introduced and direct numerical simulation (DNS) results of turbulent pipe flow with that control is reported. We also introduce DNS of an anisotropic compliant surface and parameter optimization using an evolutionary optimization technique.

  • PDF

Research on Turbulent Skin Friction Reduction with the aid of Direct Numerical Simulation

  • Fukagata, Koji
    • 한국전산유체공학회:학술대회논문집
    • /
    • 2008.10a
    • /
    • pp.347-354
    • /
    • 2008
  • We introduce a series of studies on turbulent skin friction drag reduction in wall-turbulence. First, an identity equation relating the skin friction drag and the Reynolds shear stress (the FIK identity) is introduced. Based on the implication of the FIK identity, a new analytical suboptimal feedback control law requiring the streamwise wall-shear stress only is introduced and direct numerical simulation (DNS) results of turbulent pipe flow with that control is reported. We also introduce DNS of an anisotropic compliant surface and parameter optimization using an evolutionary optimization technique.

  • PDF

Social Comparison Information, Ethnocentrism, National Identity Associated with Purchase Intention in China

  • FANG, Yuantao;OH, Han-Mo;YOON, Ki-Chang;TENG, Zhuoqi
    • Journal of Distribution Science
    • /
    • v.17 no.5
    • /
    • pp.39-50
    • /
    • 2019
  • Purpose - The purpose of our study is to provide an understanding of the relationships among consumer attention to social comparison information (ATSCI), consumer ethnocentrism (CET), national identity (NI), and consumer purchase intention to domestic brands (PIDB). Drawing on the social comparison theory (SCT) and social identity theory (SIT), we developed a model that is empirically testable and explains consumer behavior of domestic brands and products. Research design, data, and methodology - The conceptual framework was tested with primary data collected through a survey in China. Structural equation modeling was employed to test hypotheses. Results - The results from empirical analyses indicated that the ATSCI positively influenced CET and NI, and CET and NI affect consumer PIDB. In addition, the mediating effects of CET and NI on the relationship between ATSCI and PIDB were identified. Nonetheless, little direct impact of ATSCI on PIDB was reported. Conclusions - We suggested that international marketers use given information to attract consumer attention and develop appropriate promotions, especially for Chinese young generations that would pay much attention to social comparison information in their purchase decisions. Our study originally connected one socio-psychological antecedent, ATSCI, with CET and NI and estimated the relationships among the three antecedents and their effects on PIDB in order to predict consumer behavior in China.

Queering Narrative, Desire, and Body: Reading of Jeanette Winterson's Written on the Body as a Queer Text

  • Kim, Kwangsoon
    • Journal of English Language & Literature
    • /
    • v.56 no.6
    • /
    • pp.1281-1294
    • /
    • 2010
  • In Written on the Body, by creating the narrator's ungendered and unsexed identity, Winterson makes her text open to the reader's assumption of the narrator's sexual and gender identity. Thus, this novel has been read, on the one hand, as a lesbian text by those who assume that the narrator is a female and, on the other hand, as a suspicious text colluding with patriarchal and heterosexual values by those who define the narrator as a male. Those readings of the narrator as one of either sex/gender, however, demonstrate how (academic as well as general) readers have been accustomed to the gender-based reading habits in which textual meanings are dichotomously arranged along the lines of sex and gender of characters. Challenging those dualistic "gendered" readings, this paper reads Winterson's Written on the Body as a queer text which interrogates, troubles, and subverts the heterosexual concepts of narrative, desire, and body without reducing the narrator's identity to the essentialist sex and gender system. More specifically, this paper examines how the narrator's 'un-/over-' determined sexual and gender identity queers the narrative structure of author-character-reader; how the narrator's queer (fluid) desire is passing and traveling across categorical contours of (homo-/hetero-) sexual desires; how Winterson challenges the concept of a coherent body and queers the concept of body as a hermeneutic text with myriad textual grids which are not coherently mapped by power but randomly inscribed by nomadic desires.

Roles of Social Identity Verification in the Effects of Symbolic and Evaluation Relevance on Chinese Consumers' Brand Attitude

  • Choi, Nak-Hwan;Xu, Huimin;Teng, Zhuoqi
    • Asian Journal of Business Environment
    • /
    • v.8 no.4
    • /
    • pp.17-27
    • /
    • 2018
  • Purpose - Current study aimed at investigating the symbolic and evaluation relevance to global luxury brands as the causes of inducing social identity verification, and also explored whether the social identity verification will affect the attitude toward the brands. Research design, data, and methodology - 323 questionaries from Chinese consumers were used to test hypotheses by structural equation model of AMOS 22.0. Results - First, social identity verification positively affected on the brand attitude. Second, both the symbolic relevance and the evaluation relevance positively affected on social identity verification. Third, the mediation roles of social identity verification were identified. Social identity verification played a full mediation role in the effect of the symbolic relevance on the brand attitude, and played a partial mediation role in the effect of the evaluation relevance on the brand attitude. Conclusions - This study could contribute to the advancement of theory concerned with the roles of consumers' social identity verification which induces positive attitude toward the global luxury brands. Global brand managers in China should try to search ways by which consumers can feel both the symbolic relevance and evaluation relevance to their luxury brands, and should make efforts to improve the symbolic relevance and evaluation relevance to their brand.

Effect of Experience Elements on Store Identity, Shopping Satisfaction and Behavioral Intention in Lifestyle Shops (라이프스타일 숍의 체험 요소가 스토어 아이덴티티, 쇼핑 만족 및 행동의도에 미치는 영향)

  • Woo, Seung Hyun;Hwang, Jin Sook
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.40 no.4
    • /
    • pp.685-700
    • /
    • 2016
  • This study investigated the effects of experience elements on store identity, shopping satisfaction, and behavioral intention in lifestyle shops. The respondents of the study were 300 adult males and females who visited lifestyle shops. The data were analyzed by using SPSS 18.0 for exploratory factor analysis and reliability analysis, and AMOS 18.0 for confirmatory factor analysis and path analysis. The results showed that there were four experience elements: entertainment, education, escapist, and esthetic. The experience elements are based on Pine & Gilmore's Experience Economy Theory. The result of path analysis showed that the entertainment experience and escapist experience had significant influences on store identity. Store identity positively influenced shopping satisfaction, but it had no significant influence on behavioral intention. Shopping satisfaction was found to have a significant effect on behavioral intention. The indirect effect analysis showed that the entertainment and escapist experiences have positive influences on shopping satisfaction and behavioral intention mediated by store identity. The store identity had an influence on behavioral intention mediated by shopping satisfaction. This study provides helpful information to domestic lifestyle brands for the establishment of a competitive store identity strategy by implementing the important store experience elements of lifestyle shops.

A NOTE ON GENERALIZATIONS OF BAILEY'S IDENTITY INVOLVING PRODUCTS OF GENERALIZED HYPERGEOMETRIC SERIES

  • Kilicman, Adem;Kurumujji, Shantha Kumari;Rathie, Arjun K.
    • Communications of the Korean Mathematical Society
    • /
    • v.37 no.2
    • /
    • pp.575-583
    • /
    • 2022
  • In the theory of hypergeometric and generalized hypergeometric series, the well-known and very useful identity due to Bailey (which is a generalization of the Preece's identity) plays an important role. The aim of this research paper is to provide generalizations of Bailey's identity involving products of generalized hypergeometric series in the most general form. A few known, as well as new results, have also been obtained as special cases of our main findings.

The Reinforcing Mechanism of Sustaining Participations in Open Source Software Developers: Based on Social Identity Theory and Organizational Citizenship Behavior Theory (오픈 소스 개발자들의 참여 의도 강화 기제 및 참여 지속 의도에 관한 연구: 사회 정체성 이론과 조직시민행동 이론에 기반하여)

  • Choi, Junghong;Choi, Joohee;Lee, Hye Sun;Hwangbo, Hwan;Lee, Inseong;Kim, Jinwoo
    • Asia pacific journal of information systems
    • /
    • v.23 no.3
    • /
    • pp.1-23
    • /
    • 2013
  • Open Source Software Development (OSSD) differentiates itself from traditional closed software development in that it reveals its source codes online and allows anyone to participate in projects. Even though its success was in doubt, many of the open collaborative working models produced successful results. Academia started to get interested in how developers are willing to participate even when there are no extrinsic rewards for their efforts. Many studies tried to explain developers' motivations, and the pursuit of ideology, reputation, and altruism are found to be the answers. Those studies, however, focused mostly on how the first contribution is made out of a certain motivation. Nowadays, OSSD reaches at its maturity and 70% of professional developers have used or utilized open source software or code in their works. As the proportion of people experiencing OSS, the accounts from previous studies are expected to be weakened. Also, extant literature fails to explain how the motivation of participating in OSS evolves over time and experiences. Given that changing over time or over experiences is the natural in the perception of motivation, studies in an attempt to understand how the motivation changes or evolves are in need. In this study, we aimed to explain how the perception about OSS from past usage or related experiences leads to the intention to sustain OSS participations. By doing so, we try to bridge the gap between previous studies and the actual phenomenon. We argued that perceived instrumentality about OSS learned from past experiences will first affect the formation of organizational identity towards general OSS community. And once the organizational identity is formed, it will affect the one's following behaviors related to OSS development, most likely to sustain the favoring stance toward OSS community. Our research distinguishes itself from previous one in that it divides the paths from organizational identity formed to the intention to sustain the voluntary helping behaviors, by altruistic and conforming intentions. Drawing on this structural model, we could explain how organizational identity engages in forming the sustaining intention from past experiences, and that the intention to help at individual level and organizational level works at different level in OSS community. We grounded our arguments on Social identity theory and Organizational Citizenship theory. We examined our assumption by constructing a structural equation model (SEM) and had 88 developers to answer our online surveys. The result is analyzed by PLS (partial least square) method. Consequently, all paths but one in our model are supported, the one which assumed the association between perceived instrumentality and altruistic intention. Our results provide directions in designing online collaborative platforms where open access collaboration is meant to occur. Theoretically, our study suggests that organizational citizenship behavior can occur from organizational identity, even in bottom-up organizational settings. More specifically, we also argue to consider both organizational level and individual level of motivation in inducing sustained participations within the platforms. Our result can be interpreted to indicate the importance of forming organizational identity in sustaining the participatory behaviors. It is because there was no direct association between perceived instrumentality from past experiences and altruistic behavior, but the perception of organizational identity bridges the two constructs. This means that people with no organizational identity can sustain their participations through conforming intention from only the perception of instrumentality, but it needs little more than that for the people to feel the intention to directly help someone in the community-first to form the self-identity as a member of the given community.

The Effects of Multi-identity on One's Psychological State and the Quality of Contribution in Virtual Communities: A Socio-Psychological Perspective

  • Suh, A-Young;Shin, Kyung-Shik;Lee, Ju-Min
    • Asia pacific journal of information systems
    • /
    • v.20 no.1
    • /
    • pp.57-79
    • /
    • 2010
  • In a virtual community, one can possess multiple identities and pretend to be different by creating self-identity in contrast with his or her actual self. Does false identity undermine the qualitative growth of a virtual community by reducing members' accountability? Or does it stimulate their contributive behaviors by ensuring freedom of speech? It is imperative to understand the effects of multi-identity considering the distinct properties of a virtual community in which people easily change their identities at little or no cost. To answer these questions, we adopted the concept of self-discrepancy from the social psychology theory rooted in the concept of the self and developed a theoretical model to predict quality of contribution of the individual member in virtual communities. Based on the self-discrepancy theory, we first identified two different domains of the self: (1) an "actual self" that consists of attributes that the person believes he or she currently possesses in real life and (2) a "cyber self" that consists of attributes the person believes he or she possesses in a virtual community. Next, we derived an index for two different types of self-discrepancy by using the differences between the actual and the cyber identities: Personal Self-discrepancy and Social Self-discrepancy. Personal Self-discrepancy reflects the degree of discrepancy between actual and cyber identity regarding a person's intelligence, education, and expertise. Social Self-discrepancy reflects the degree of discrepancy between actual and cyber identity regarding a person's morality, sociability, and accordance with social norms. Finally, we linked them with sense of virtual community, perceived privacy rights, and quality of contribution to examine how having a multi-identity influences an individual's psychological state and contributive behaviors in a virtual community. The results of the analysis based on 266 respondents showed that Social Self-discrepancy negatively influenced both the Sense of Virtual Community and Perceived Privacy Rights, while Personal Self-discrepancy negatively influenced only Perceived Privacy Rights, thereby resulting in reduced quality of contribution in virtual communities. Based on the results of this analysis, we can explain the dysfunctions of multi-identity in virtual communities. First, people who pretend to be different by engaging in socially undesirable behaviors under their alternative identities are more likely to suffer lower levels of psychological wellbeing and thus experience lower levels of sense of virtual community than others. Second, people do not perceive a high level of privacy rights reflecting catharsis, recovery, or autonomy, even though they create different selves and engage in socially undesirable behaviors in a virtual community. Third, people who pretend to be different persons in terms of their intelligence, education, or expertise also indirectly debase the quality of contribution by decreasing perceived privacy rights. The results suggest that virtual community managers should pay more attention to the negative influences exercised by multi-identity on the quality of contribution, thereby controlling the need to create alternative identities in virtual communities. We hope that more research will be conducted on this underexplored area of multi-identity and that our theoretical framework will serve as a useful conceptual tool for all endeavors.