• Korean Journal of Construction Engineering and Management
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• v.19 no.1
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• pp.74-79
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• 2018

The establishment of an effective bidding system is critical to ensure both the high quality of civil infrastructure and proper earning of contractors. However, the continuous changes of a bidding system in South Korea reveal that problems such as a dumping or high price winning have not been fully resolved yet. This study thus aims at understanding the bidding behavior and strategies of contractors by analyzing a tender ratio in historical data. Multiple regression analysis is conducted to understand the effect of internal and external factors (e.g., estimated cost, combined value of construction performance evaluation) on a tender ratio. The results statistically show that such factors affect the tender ratio an individual bidder determines and have the varying effect on the tender ratio by contractors' firm size.

• Journal of Korea Port Economic Association
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• v.25 no.3
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• pp.117-138
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• 2009

Heavy truck traffic causes serious damage to not only environment condition due to the emissions but also pavement condition. In Incheon city area, the highways of the port hinterland suffer from similar problems. Therefore, it is required to develop a policy to solve those problems, which should be under the collective agreement of the truck drivers, local residents, and policy makers. This paper compared the truck traffic volumes and re-pavement construction history for last 4 years and showed the real effect of the heavy truck traffic on the pavement. Furthermore, this study examined the pros and cons of the exclusive truck lane and truck only highway policies and conducted a survey of truck drivers, local residents, and policy makers. Each group showed different preferences for the policies particularly for the question asking the best implementable policy.

• The Journal of Society for e-Business Studies
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• v.16 no.2
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• pp.39-71
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• 2011

Lately, developing systems fully interoperable with others is considered an essential element for successful projects, as not only do e-commerce becomes ubiquitous but also distributed systems' paradigm spreads. However, since definitions of interoperability vary by viewpoints, it is still difficult to have the same understanding and evaluation criteria on interoperability. For instance, various interoperability parties in military use different definitions of interoperability, and its T&E is not conducted according to the definition, but only to levels of information exchange. In this paper, we proposed a new definition of interoperability as followsm First of all, we collected existing and various interoperability definitions, extracting key components in each of them. Second, we statistically analyzed those components and applied the association rules discovery in data mining. We compared existing interoperability definitions to ours. From this research, we found associations among the components from various definitions applying market-basketanalysis, redefining interoperability. Key findings of this research can contribute to a unified viewpoint on the definition, level, and evaluation items of interoperability.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2004.09a
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• pp.266-268
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• 2004

대부분의 유기물은 토양의 특성에 따라 그 흡착 및 탈착 양상이 다르며 이는 오염물질의 토양에서의 지속성 및 이동성에 영향을 미치게 된다. 본 연구에서는 대표적인 유기오염물인 PAH(Polycyclic Aromatic Hydrocarbon)에 대하여 흡착 및 탈착과 오염물질의 미생물 분해 등을 통한 제거 기작과의 연관성을 연구하고자 한다. PAH의 이론적인 미생물분해반응식은 열역학적 이론을 바탕으로 하는 반쪽반응방법을 사용하여 예측할 수 있다. 오염물과 토양의 특성에 따른 흡착 및 탈착 양상을 파악하고, 앞에서 구한 미생물 분해반응식을 이용하여 이론적 분해량을 예측하면 오염물의 생물학적 이용성과 노출량을 결정할 수 있다 이를 위하여 본 연구에서는 토양의 여러 특성을 분석한 후, PAH의 미생물 분해량 및 분해율을 측정하고자 한다. 실험을 통하여 실제 토양에서 측정된 PAH 분해량과 위의 이론적 분해량 예측 결과 사이의 관계를 토양의 특성을 이용하여 설명할 수 있으며 나아가 오염물질의 생물학적이용성에 관하여 개략적으로 일반화된 예측 모형을 얻을 수 있을 것이다. 본 연구를 통하여 토양과 유기오염물질, 미생물간의 상호 작용에 대한 이해를 높이고 보다 실질적인 유기오염물의 생물학적 이용성을 예측할 수 있는 방안을 마련할 수 있을 것이다.

• The Journal of the Korea Contents Association
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• v.11 no.1
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• pp.340-349
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• 2011

This research analyzes the 4P(Police-Press-Politics-Public) model for establish an ideal relationship between press and police and suggests some practical policies. Through the examination of the relations among 4Ps(Police-Press-Politics-Public), Jean-Louis Loubet Del Bayle proposes 3 models from three aspets : exchange of information, relation of power, relation of legitimacy. The analysis of his models shows that politics and public give social and political legitimacy to police and press which, based on the legitimacy, thereby obtain necessary informations from external entities to fulfil their original functions. On the other hand, the inevitable relation of press and police with politics and public caused from their social functions, in turn, makes the relationship between press and police more complicated and delicate. This research concludes, the relationship between police and press should be well balanced for their successful social functions and benefits of the public. To this end, this study suggests that a specific press guideline which is imposed on press and police, must be prepared and that a specialized press office must be established in the police.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.3
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• pp.1367-1374
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• 2014

This study is intended to increase the understanding of multicultural children's parent-child which I used as a control. To do this a survey was conducted of students with basic communication ability in the $5^{th}$ and $6^{th}$ grades who are enrolled in elementary school in Gyeonggi Province. In the study, the multicultural children's group, when compared to other groups, had a father-child relationship quality that was found to be lower. A study will be made analyzing the father of multicultural families' children, including the father's role in multicultural education. Through the fact that the quality of parent-child relationship significantly affects multicultural family children's school adjustment. If multicultural family parents have access to a variety of training programs in education, then multicultural children school adjustment will be further enhanced.

• Informatization Policy
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• v.24 no.1
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• pp.79-99
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• 2017

Despite the early success story, the pan-industry diffusion of big data has been slow mostly due to lack of confidence of the value creation and privacy-related concerns. The problem leads us to the need to a stakeholder analysis on the adoption process of big data. The present study combines technology acceptance model, task-technology fit theory, and privacy calculus theory to integrate the positive and negative factors on the big data adoption. The empirical analysis was performed based on the survey from the current and potential big data users. Results revealed perceived usefulness, task-technology fit, and privacy concern are significant antecedents to the intention to use big data. Furthermore, there are significant differences in the perceptions of each constructs among groups divided by the types of big data use, with several exceptions. And the control effect was found in the magnitude of the relation between independent variables and dependent variable. The theoretical and politic implications of the analysis are discussed as to the promotion of big data industry.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.7
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• pp.400-409
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• 2017

This study aimed to examine safety consciousness and practice of safety behaviors in new police officers and investigate the relationship between them. The subjects were 81 new police officers who understood the purpose of this study and agreed to participate. The collected data were analyzed by frequency, descriptive statistics, t-test, ANOVA, and Pearson's correlation using the SPSS 22.0 program. The results of the study show that the safety consciousness of subjects was as high as 4.29 points. On the other hand, practice of safety behavior was moderate at 48.71 points. Fire safety consciousness was found to be different according to age and education level, and environmental safety action was significantly different according to gender and residence. Safety consciousness showed a significant correlation with practice of safety behavior. Based on the results, it is necessary to develop and apply more effective and practical safety related education for police officers in addition to technical and institutional aspects in order to promote safety awareness and safety behavior practice.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.10
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• pp.357-366
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• 2016

This study analyzed the strengths and weaknesses for enneagram types 3, 6 and 9, which are the center types among the different centers of intelligence, in order to provide college students with meaningful knowledge that can improve their self-understanding. To conduct this study, thematic analysis was used to discover the strength and weakness keywords using NodeXL and contents analysis was used for the case analysis of types 3, 6, and 9. The results showed that the strengths were objectiveness and confidence for type 3, responsibility and premeditation for type 6 and pacifism and consideration for type 9. The weaknesses were self-consciousness and consequentialism for type 3, indecision and worry for type 6, and evading conflict and laziness for type 9. The results obtained by contents analysis showed that type 3 was goal-oriented and placed value on gaining the recognition of other people, type 6 had a sense of responsibility and was well prepared beforehand, and type 9 was considerate of others's feelings and evaded conflicts. This can help college students to better understand themselves.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.529-544
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• 2022

With the global pandemic in the era of the 4th industrial revolution, the business environment of companies was engulfed by rapid volatility and uncertainty. In particular, in order for an organization to have high competitiveness due to the spread of the flexible work system, relationship management with members of the organization and self-directed job crafting are recognized as important key resources. This study aims to investigate how relational energy and resilience within a corporate organization affect job crafting and to verify the effect of job crafting on individual job performance. For empirical research, 400 valid responses to employees of general companies were analyzed by SPSS 26.0 and Smart PLS 3.0. As a result of the analysis, first, it was confirmed that relational energy did not have a positive (+) effect on task crafting. Second, it was found that relational energy had a positive (+) effect on relational crafting and cognitive crafting, respectively. Third, it was found that resilience had a positive (+) effect on both task crafting, relationship crafting, and cognitive crafting that constitute job crafting. Fourth, it was found that job crafting had a positive (+) effect on individual job performance. Based on these research results, we intend to derive academic and practical implications and provide practical help to follow-up researchers and stakeholders.