• Title/Summary/Keyword: Two-step Cluster Analysis

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The Relationship between Driving Behavior, Driving Anger, and Ambivalence Over Emotional Expressiveness in an Anonymous Situation (익명상황의 운전행동과 운전분노 및 정서표현갈등과의 관계)

  • Bo Young Yun ;Soon Chul Lee
    • Korean Journal of Culture and Social Issue
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    • v.17 no.3
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    • pp.321-341
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    • 2011
  • This study examines how anonymity between drivers affects aggressive driving and why, in an anonymous situation, some drive aggressively and others do not. Two surveys were conducted. The first survey covered 200 participants and found that people are more likely to drive aggressively in an anonymous situation than in a face-to-face situation. The second survey covered 384 participants with a history of aggressive driving and found that these aggressive drivers could be classified into three groups using a two-step cluster analysis. Drivers who often exhibit aggressive driving in anonymous situations were found in the second questionnaire to have a high tendency towards driving anger and towards ambivalence over emotional expressiveness. The tendency towards self-defensive ambivalence factor, one of the factors in the ambivalence over emotional expressiveness questionnaire, was also found to be high. Individuals who tended to drive aggressively in an anonymous situation were found to be susceptible to driving anger, usually faced ambivalence over emotional expressiveness, and typically were indecisive. The results of this study suggest that rather than intensifying the enforcement of traffic regulations, a better remedy for those who drive recklessly would be to have them undertake some candid self-reflection.

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Implication of the Ratio of Exchangeable Cations in Mountain Wetlands (산지습지 치환성 양이온 함량비의 특성과 함의)

  • Shin, Young Ho;Kim, Sung Hwan;Rhew, Hosahang
    • Journal of the Korean Geographical Society
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    • v.49 no.2
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    • pp.221-244
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    • 2014
  • We suggested several implications by examining geochemical properties of sediments in Simjeok, Jangdo, and Hwaeomneup mountain wetlands which are natural preservation areas. Geochemical properties of wetland sediments show that all wetlands were included in the type of fens, but their distribution patterns were different from one another. We classified three sub-groups of sediments using the two step cluster analysis on the ratio of exchangeable cations. Wetland sediments can be grouped into Ca-dominated, Mg-dominated, and K-dominated types. Simjeok wetland have Ca-dominated sediments, while the sediments of Jangdo wetland indicate the Mg-dominated and Ca-dominated characteristics. Hwaeomneup wetland is composed of K-dominated sediment mainly. Different properties in the ratio are affected by various environmental factors such as geological, pedological, and vegetational settings. Because these geochemical properties will be affected by climate change and human impacts, these will be environmental indicator in mountain wetlands and be used in wetland management. This scheme can be used for classification of mountain wetlands. Therefore, we should work on geochemical properties of wetland sediments and classification schemes based on geochemical properties not only to widen understanding in geomorphic system or ecosystem of mountain wetlands but to conserve mountain wetlands properly.

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A Study on the Job Productivity by the Smart Work Investment - Focused on the Organizational Change Resistance and the Communication - (스마트워크 투자에 따른 직무 생산성에 관한 연구 - 조직 변화저항과 의사소통을 중심으로-)

  • Jung, Byoung-Ho
    • Management & Information Systems Review
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    • v.37 no.3
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    • pp.83-113
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    • 2018
  • The purpose of this study to empirically examine a smart work investment and job performance by change resistance. Firstly, There investigates mediating role of the communication between the smart work investment and the job performance. Secondly, It will identify the job productivity differences through a level of organizational change resistance that reduced smart work investment. The smart work is to provide the flexibility of time and location and is a working method to improve a work productivity of organization members. The introduction of smart work means the adoption of new organizational culture, institution and technology and requires a novel change of a custom and pattern on existing organization culture and institution because of transformation form of communication and collaboration. The method of this study adopts a structural equation model to test a mediating effect of communication and a moderating effect of change resistance level. This model confirms whether smart work investments provide a positive impact on communication and organizational productivity. In addition, I will classify a change resistance level of smart work by cluster analysis and then check a critical path difference of job productivity between each group. As a result, The organizational IT, institution and culture on the smart work investment appeared to important influencers in communication and also had a direct influence of individual performance. Also, The three independent variables of smart work investment have an indirect influence of individual and organizational performance through communication mediating variables. However, the organizational IT and institution as independent variables do not provide direct influence of organization performance. Nevertheless, two independent variables of organizational IT and institution have an indirect influence the organization performance through communication mediating variables. As a result of confirming a productivity of three groups on organization resistance, there was a difference the individual and organizational performance among groups. The low-level group of organizational resistance showed high coefficient value of performance compared to other groups. The group analysis implications, The smart work investment appeared significantly to revise the institution first, build culture secondly and advanced technology lastly. The theoretical implication from this study contributes an extension of social science theory through socio-technical systems, institution, culture, change resistance and job performance based on smart work. The practical implications explain the smart work success in step-by-step investment rather than radical investment as level management of change resistance. In future research, the smart work performance between private and public firms will analyze a difference of the organizational culture, institution, technology and performance.