• Journal of the Korean Operations Research and Management Science Society
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• v.40 no.4
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• pp.107-121
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• 2015

Diffusion of innovation is the process in which an innovation is communicated through certain channels over time among the members of a social system. The literatures have emphasized the importance of interpersonal network influences on individuals in convincing them to adopt innovations and thereby promoting its diffusion. In particular, the behavior of opinion leaders who lead in influencing others' opinion is important in determining the rate of adoption of innovation in a system. Centrality has been recognized as a good indicator that quantifies a node's influences on others in a given network. However, recent studies have questioned its relevance on various different types of diffusion processes. In this regard, this study aims at examining the effect of a node exhibiting high centrality on expediting diffusion of innovations. In particular, we considered the situation where two innovations compete with each other to be adopted by potential adopters who are personally connected with each other. In order to analyze this competitive diffusion process, we developed a simulation model and conducted regression analyses on the outcomes of the simulations performed. The results suggest that the effect of a node with high centrality can be substantially reduced depending upon the type of a network structure or the adoption thresholds of potential adopters in a network.

• Korean Institute of Interior Design Journal
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• v.15 no.6 s.59
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• pp.89-100
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• 2006

This paper researched social, cultural background, psychological bases, design method and design types with regard to user's participation in space design. This issue of user's participation became one of major paradigms of 21st century not only for space design but also for every other cultural phenomenon. First chapter is an introduction. Second chapter tried to assert the fact that user's participation will be the important aspect for future space design by proving the correlation between user's participation in space design and the important social changes. It also tried to prove the psychological reasons why the users' participations affect the level of user satisfaction. It can be explained by Behaviorism which insisted that our outer behaviors affect our inner attitudes and preferences. Third chapter explained the affordances in design which works as a means of inducing user's participatory behaviors. Fourth chapter proposed the types of participatory space designs classified by the users' behavioral features and their characteristics, intending that they will verify the realization of the theories which we discussed in the former chapters regarding the users' participation in space design. The fifth chapter is a conclusion which says that outwardly, those participations are simply making external changes in design. but actually, they are reflecting more profound social changes and making important psychological effects on users.

• International conference on construction engineering and project management
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• 2020.12a
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• pp.381-386
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• 2020

Global construction and engineering consulting (E&C) firms are actively seeking entry into overseas markets based on loan projects from multilateral development banks to provide a basis for entry into overseas markets and sustainable growth. Bids on these projects are competitive between global top firms in terms of the technical level and price due to the limited number of projects; thus, developing a successful partnership to complement competence has become an essential element to win bids. In this regard, many studies have analyzed enterprises through characteristic analyses or the derivation of influential factors from the past social networks based on social network analysis (SNA). However, few studies have been conducted to reflect the process of changes to analyze collaborative relationships. Thus, this study aims to identify dynamic changes in past social networks and develop a model that can predict changes in the relationships between E&C firms based on similarities or differences between firms, presenting a methodology to target firms for appropriate collaboration. The analysis results demonstrate that the sensitivity of the developed prediction model was 70.26%, which could accurately predict 163 out of 232 actual cooperative cases.

• Journal of Korean Society of Transportation
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• v.33 no.1
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• pp.50-60
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• 2015

Pedestrians not only walk along roads, but also pass through buildings or across open spaces. This study defines these unusual walk routes as social path. Social path is an informal pedestrian route that is not considered in a pedestrian network, even though it should be regarded as pedestrian route considering the fact that many people actually use this path. In response, current study related to travel behavior cannot evaluate properly due to lack of consideration for realistic travel behavior such as social path. In order to deal with this situation, this study analyzes the effect of social path at two complex centers in Seoul. Evaluation indices are service area analysis and urban network analysis which is one of the spatial network analysis. In particular, we subdivide the network into three steps by the level of network building and analyze each step. As a result, it is revealed that step three which includes social path shows the greatest improvement in pedestrian accessibility. In this regard, we confirm that social path should be considered when evaluating pedestrian accessibility in further studies. Furthermore, a lot of undervalued facilities will be re-appraised in the field of travel behavior.

• The Journal of the Korea Contents Association
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• v.15 no.5
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• pp.283-294
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• 2015

The study examines the effect of IT education on on-line social relationship of older adults. The study group composed of 114 older adults who received IT education (computer class, internet class, and smart-phone class) at two community welfare centers in Seoul. In order to compare the effect of IT education of the study group, the control group who did not receive any IT education was recruited (N = 30). Social Capital Scale was used to measure on-line social relationship. The on-line social relationship was composed of social bonding type and social bridging type. Results showed that the study group significantly higher scores than did the control group on three subscales (emotional support, access to scare or limited resources, and out-group antagonism) of social bonding type except one subscale (ability to mobilize solidarity). With regard to social bridging type of social relationship, the study group significantly higher scores that did the control group on all four subscales (outward looking, contact with a broad rage of people, a view of oneself as part of a broader group, and diffuse reciprocity with a broader community). The findings highlight the importance of IT education for older adults to expand and increase social bonding and social bridging of social relationship.

• Journal of Fashion Business
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• v.13 no.6
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• pp.111-124
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• 2009

The purpose of the study was to provide the basic information that is needed to build marketing strategies related to consumers' brand-switching, through investigation into sport shoe consumers' motivations for brand-switching, as determined by their age and gender. The study was implemented by means of a descriptive survey method using a questionnaire. The sample consisted of 534 consumers between the ages of 13 and 59, residing in the Seoul area. The survey for the study was conducted during the period of October 10 through December 5, in 2008. Descriptive statistics, t-test, ANOVA and Duncan's Test were employed for the analysis of data gathered. The results revealed that there are differences with regard to the degree that the functional/aesthetic factors of sport shoes contribute to the motivation for brand-switching, when assessed with respect to the age and gender of consumers. The contributory degrees of situational factors and social/emotional curiosity factors of consumers are also different with regard to the motivation for brand-switching behavior of sport shoe consumers in accordance with their age and gender. Therefore, marketing strategies related to brand-switching behavior will be more effective when they are differentiated according to the target age and gender, even with respect to the same type of product, such as sport shoes.

• Journal of the Korean housing association
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• v.25 no.6
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• pp.1-10
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• 2014

The purpose of this study is to gain an in-depth understand of the dwelling needs of residents who are interested in Cohousing. To do this, we interviewed 18 urban residents who wanted a community life; investigated consciousness of neighbor relationships; and analyzed their consciousness of Cohousing residences, preference types, and spatial needs. At first the research has revealed that the neighbor relationships of the participants were not very close and that there was a difference in awareness levels between a 'good neighbor' and 'strange neighbor' with regard to neighbors, though all of the participants required a vitalization of these relationships. Second, Cohousing residence types could be divided into the 'life preferred type' and 'space preferred type', depending on the differences of pursued dwelling interests. These could be further segmented into the 'leisure life preferred type' and 'daily life preferred type', 'public space preferred type' and 'individual space preferred type'. Thirdly, preferences for Cohousing types varied depending on differences in priority with regard to important concepts of the social-physical environment (e.g., community property, effectiveness, naturalness, economic feasibility, and individuality). Finally, we found that the greatest needs were for public gardens and exercise space as aspects of the common spaces. Agreements pertaining to special use were considered as most important during the design process of the common spaces.

• The Korean Journal of Health Service Management
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• v.5 no.3
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• pp.133-143
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• 2011

This study is purposed to suggest the method for improving the effect of the mental health project by checking the influence of the "value and function of the mentally disabled" to the "satisfaction to current life of the mentally disabled" for the users of the daytime mental rehabilitation service in the local community, and the difference in the"satisfaction to the current life of the mentally disabled" and "value and function of the mentally disabled" depending on the participation into the mental rehabilitation program. With regard to the "satisfaction to the current life of the mentally disabled", the result showed that the "relation between the current user members" and "consideration about himself in usual time" were the positive influential factors out of the measuring factors for the "value and function of the mentally disabled." In addition, with regard to the "satisfaction to the current life of the mentally disabled", in case of participating to the "vocational rehabilitation program" out of the mental rehabilitation programs, the general "personal value and function which are felt by the mentally disabled" has higher significant difference in case of participating into the "social technology program", "daily life program", "vocational rehabilitation program", "leisure activity program" out of the mental rehabilitation programs than non participating.

• Korean Institute of Interior Design Journal
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• v.21 no.6
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• pp.194-203
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• 2012

The purpose of this study is to look into a Pilotis as a space of flow in Le Corbusier's works. The first of his principals, "pilotis" shown in "5 principals in new architecture" represents the articulated relationship between architecture and site. The study is based on the flow concept of Pilotis regarding especially its functional, environmental, and visual perspective. Le Corbusier describes his architecture as a circulation representing the modern society. The Pilotis space is often reserved for this circulation while this space is also suggested as a place for the leisure or the garden uninterrupted. So it seems to be meaningful to find out the real usage of the Pilotis space in Le Corbusier's work in order to clarify the relationship between the articulated space and its use proposed. The second question is concerning to the Pilotis space as a space of flow of the light and the air. This issue is not only related to the plastic aspects of the buildings, but also caused from the social, or environmental problematic of those days. Finally, the continuity of the regard is one of the most important characteristics derived from the raised volume by Pilotis.

• Safety and Health at Work
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• v.6 no.4
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• pp.263-267
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• 2015

Significant changes in the past year have taken place in the world of work that are bringing new challenges with regard to employee safety and health. These changes have led to emerging psychosocial risks (PSRs) at work. The risks are primarily linked to how work is designed, organized, and managed, and to the economic and social frame of work. These factors have increased the level of work-related stress and can lead to serious deterioration in mental and physical health. In tackling PSRs, the European labor inspectorates can have an important role by enforcing preventive and/or corrective interventions in the content and context of work. However, to improve working conditions, unilateral interventions in the context and content of work are insufficient and require adopting a common strategy to tackle PSRs, based on a holistic approach. The implementation of a common strategy by the European Labor Inspectorate for tackling PSRs is restricted by the lack of a common legislative frame with regard to PSR evaluation and management, the different levels of labor inspectors' training, and the different levels of employees' and employers' health and safety culture.