• KIEAE Journal
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• v.16 no.2
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• pp.23-31
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• 2016

Purpose: Recently energy consumption is rapidly increasing due to continuous development of social evolution in various field. In this situation, there is a lot of effort to reduce this energy consumption in many ways, especially in building energy. Preceding studies already started to analyze the housing area such as zero energy house and passive house by researching annual building energy consumption, but to apply the results of housing to office building is insufficient since it has different consumption tendency. Method: In this study, eQuest program was used for simulation and the base model is selected among standard office building in ASHRAE 90.1. Variables are divided into passive and active factors for comparison. Result: In passive factors, glazing system showed the highest energy saving rate by 21.3% with triple low-e glass and enhancing wall u-value showed the lowest energy saving rate by 3.6% with 0.15 m2/K. In active factors, VAV system showed 30.9% energy saving rate when compared to CAV system, and heat exchanger showed 10.2% energy saving rate. For regeneration energy part, photovoltaic panel generated 10.4% of base annual energy usage.

• Journal of Korea Port Economic Association
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• v.27 no.3
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• pp.179-206
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• 2011

Masan Port, which is a main entrance to Korea, has undergone the tough time these days. Many problems are mainly due to the deterioration of harbor facilities, the shortage of waterfront area and the decrease of the trading volumes. Especially the trading volumes are seriously affected by the Busan New Port, which was not only very close to the Masan Port but constructed in a large scale. For the Masan Port to develop continuously, therefore, it is vital to modernize harbor facilities, redevelop the old harbor, expand its waterfront, construct green port and develop harbor for sightseeing. At the same time, Masan port should be ready to develop a higher value added port. To vitalize Masan port's economy, we have to push forward a differentiation strategy that makes Masan port specialized harbor for distributing goods like hard and heavy cargo.

• Journal of Information Technology Applications and Management
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• v.14 no.3
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• pp.179-197
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• 2007

This paper analyzed the effects of interactions among participants on the satisfaction and commitment of cyber education. Even if the quality of interactions in cyber education may not be so good as that of interactions in face to face education. various kinds of interactions could be introduced in cyber education. An email or Q/A between lecturer and students could be a good way to compensate the deficiency of cyber education. Common News Boards or Discussion Rooms among students themselves are also a powerful means to learn each other in cyber space. The result of this study shows that as interactions among participants increase. satisfaction and commitment of the lecture also increase. This study also analyzed how cyber educational effects differs as interaction type changes in space dimension and time dimension. The result shows interactions in the same cyber space such as News Board brings more desirable outcome than those in the different cyber space. But the effects of interactions classified by time dimension does not show statistically significant differences.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.5
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• pp.1492-1507
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• 2016

The purpose of this study was to analyze elementary students' perception on science classes using abductive strategies. The participants were composed of 21 students(10 boys, 11 girls) from K Elementary School in Busan Metropolitan City. They were asked for questionnaires developed by researchers after 20 times of reframed science lessons using abductive strategies. The results were as follows. First, the science classes using abductive strategies were effective to improve students' interest(ave.=4.19) on science. Second, the analysis results on questionnaires asking utility of the classes showed the students' positive reactions to science lessons using abductive strategies. It was thought that the classes had a positive effect on all components of utility, i.e., overall science(4.48), generating hypothesis(4.19), conceptual understanding(4.19), and meta-cognition(3.76). Third, students perceived positively improvement on the science classes. The components of improvement, i.e., creativity(4.19), concentration(4.29), transfer(3.76), comprehension(4.29) were perceived positively by students. Fourth, students' satisfaction on the sciences classes showed ave.=3.71. Last, students expressed satisfaction on the science classes using abductive strategies and experienced a change of thinking about attitude toward science.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.14 no.1
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• pp.123-140
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• 2003

This paper reviews digital collection development policies of academic libraries in America which attempted to digitize their collections in order to preserve their analog collections and to provide easy access to their digital collections. Such factors as selecting materials for digitization, sustainable size of digital collection, bibliographic control and collection management, coordinated digital collection project are discussed in order to be fully integrated into traditional collection development policies of academic libraries.

• Journal of Information Technology Applications and Management
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• v.18 no.1
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• pp.101-123
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• 2011

Considering how an organization is timely competitive for survival in the rapidly changing environment of today, it is more important to get new information and knowledge continuously by teams. However team system provides organization with opportunities and, at the same time, is provoked into conflict by the diversity of team members. This study examines the effect of team diversity on knowledge creation and investigates the influence of absorptive capacity and conflict as mediators. The sample population consisted of officials who work in teams at two business corporations that have successfully achieved knowledge creation. The result presents team diversity serves as an effective factor for absorptive capacity and absorptive capacity also serves as an effective factor for knowledge creation. In contrast, team diversity brings team members into conflict and conflict has a negative effect on knowledge creation. Another significant finding of this research is the fact that a positive effect of absorptive capacity on knowledge creation is greater than a negative effect of conflict on it. It clearly demonstrates that team diversity can be an important determinant of knowledge creation if an organization tries to reduce team member's conflict.

• Journal of Information Technology Applications and Management
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• v.17 no.2
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• pp.19-45
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• 2010

This research has analyzed the differentiated influence of organizational variables(an organization's learning culture and organizational support networks) and personal variables(the individual's motivation to learn and self-efficacy) on the process of gaining and using of knowledge. These two variables have been regarded as the major variables for the successful learning of 6Sigma, according to Social Cognitive Theory. In addition, this research has proven the role structure of the abovementioned two variables through a suitable methodology(Hierarchical Linear Model). In regard to this methodology, the different hierarchical level of the personal variable and organizational variable was especially focused on, and the effect of interaction between the high level and the low level was considered in detail. Considering the current situation, in that the importance of organizational factor and personal factor has been emphasized but the accurate role of each variable has not been verified, the research model is thought to help to establish an effective strategy to implement 6 Sigma.

• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.157-157
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• 2017

해상으로 운송되는 위험유해물질(HNS, Hazardous and Noxious Substance)은 6,000여종 이상으로 많은 종류를 포함하고 있으므로, 유출시 대응전략 수립을 위한 HNS 거동 및 위험반경 예측을 결정론적으로 제시하기 어렵다. HNS 거동예측에서는 예측의 신속성과 효율성을 고려하여 차이가 미미한 모든 종류의 HNS 특성을 모두 고려하는 대신에 거동에 크게 영향을 미칠 수 있는 특성들에 초점을 맞쳐 대표적인 거동예측 모델을 개발하여 적용할 필요가 있다. 본 연구에서는 HNS를 기체상, 액체상, 고체상 등 크게 3분류로 구분하고, 각각의 분류별 거동특성 모델링을 연구하였다. 물질 특성별 거동특성은 증기압, 용해도, 밀도 등을 고려하였으며, 각각의 변수에 따른 증발, 혼?, 침강 등의 거동을 모델링하였다. 물질의 거동특성 모델링은 대기 해양 확산모델의 계산에서 대기중 확산, 수중 확산, 해저면 침적 등을 결정하는 과정으로 활용된다.

• Convergence Security Journal
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• v.18 no.2
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• pp.41-47
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• 2018

Theorists of war have often used Clausewitz's trinity theory as a framework for analyzing war strategies and histories. Heretofore, studies on cyber warfare have focused primarily on laws, policies, structuring organizations, manpower, and training pertaining to preparing the cyberspace for war. Currently, studies highlighting the comparative characteristics of war in cyberspace, how it differs from conventional warfare, and analytical frameworks for understanding war in cyberspace are rare. Using Clausewitz's trinity theory, this paper interprets the essence of war from the perspectives of (1) Intellect, (2) Bravery, and (3) Passion, to propose an analytical model for understanding war in cyberspace, one that factors in the intrinsic qualities and characteristics of cyberspace under spatial and temporal constraints. Furthermore, this paper applies the aforementioned analytical model to the Iraq War and concludes with a theoretical illustration that cyber warfare played a significant role in winning the war.

• Journal of Information Technology Applications and Management
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• v.27 no.6
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• pp.181-196
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• 2020

Based on the resource-based perspective, this study seeks to understand the relationship between the organizational slack and innovation, and to demonstrate that there exists a difference in the influence of the organizational slack according to the type of innovation by dividing the types of innovation into exploratory and exploitative innovations. They also want to understand the role that network diversity plays in the relationship between organizational slack and innovation. For this purpose, hypothesis and research models were presented based on resource-based perspectives and empirical analysis was conducted on 171 companies. The analysis confirmed that the impact of organizational slack on exploitative innovation is linear, not non-linear, as expected. In other words, the more resources available, the more productive the enterprise is, and the more resources available to the organization have a positive impact on the innovation. On the other hand, exploratory innovation represented an inverse U-shaped relationship between organizational slack and nonlinearity as expected. The control effect of network diversity was only seen in the relationship between organizational slack and exploratory innovation. Through this study, it provides implications such as the importance of network diversity, which is a relationship between companies, and the difference in the utilization of organizational slack according to the type of innovation.