• Journal of Information Processing Systems
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• v.16 no.2
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• pp.460-477
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• 2020

As one of the most significant challenges in the virtual data center, the virtual data center embedding has attracted extensive attention from researchers. The existing research works mainly focus on how to design algorithms to increase operating revenue. However, they ignore the energy consumption issue of the physical data center in virtual data center embedding. In this paper, we focus on studying the energy-aware virtual data center embedding problem. Specifically, we first propose an energy consumption model. It includes the energy consumption models of the virtual machine node and the virtual switch node, aiming to quantitatively measure the energy consumption in virtual data center embedding. Based on such a model, we propose two algorithms regarding virtual data center embedding: one is heuristic, and the other is based on particle swarm optimization. The second algorithm provides a better solution to virtual data center embedding by leveraging the evolution process of particle swarm optimization. Finally, experiment results show that our proposed algorithms can effectively save energy while guaranteeing the embedding success rate.

• Journal of Digital Convergence
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• v.12 no.3
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• pp.127-140
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• 2014

This study is performed to measure a performance of IMS using Delone & McLean's Information Success Model as a practical analysis for IMS implementation and their effects. For this, I reviewed the pre-research literatures to attain the measurement factors for IMS implementation and information system success model. For inspecting the hypotheses, answered the questionaries to the IMS managers. The results are as follows: the first, to improve the user's will, they have to focus on the service quality. The second, to improve the user's satisfaction, focus on the system quality. Finally, which affect on the performance is user's will rather than satisfaction.

• Korean Institute of Interior Design Journal
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• v.16 no.4
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• pp.21-30
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• 2007

`Desire` in this study is not something desire in the used to be-way we can deal with it. This study is to figure out 'desire structure' of interior architecture as a significant measure to interpret the Lacan's desire theory. It is also examines Lacan's concept of desire as defined in the mechanisms of language, in relation to architecture and interior architecture, and in the concept of the objet a(the unattainable object of desire), in the structure of desire as it can be seen in interior architecture. In particular, it analyzed that the desire structure have influenced on some kind of specific desire types what is expressed a characteristic to interior spaces of intimacy, perpetuity, representation, expression. These types reveal the characteristics of desire structure in inner space of interior architecture through negativing and fantasying. The focus on the structure becomes a major issue in almost many kinds of contemporary knowledge-system that starts from the mind to go out to the space in a material or non-meterial(spiritual) way. Therefore, the desire structure reconstructs the Real to make itself through negative and fantastic creation-process. It is important that desire characteristics help detect behind beneath the singularity of interior spaces more than what we know.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.1
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• pp.75-87
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• 2009

We propose in this paper a novel approach to image fusion in which the fusion rule is guided by optimizing an image clarity function. A Genetic Algorithm is used to stochastically select, comparative to the clarity function, the optimum block from among the source images. A novel nested Genetic Algorithm with gifted individuals found through bombardment of genes by the mutation operator is designed and implemented. Convergence of the algorithm is analytically and empirically examined and statistically compared (MANOVA) with the canonical GA using 3 test functions commonly used in the GA literature. The resulting GA is invariant to parameters and population size, and a minimal size of 20 individuals is found to be sufficient in the tests. In the fusion application, each individual in the population is a finite sequence of discrete values that represent input blocks. Performance of the proposed technique applied to image fusion experiments, is characterized in terms of Mutual Information (MI) as the output quality measure. The method is tested with C=2 input images. The results of the proposed scheme indicate a practical and attractive alternative to current multi-focus image fusion techniques.

• Journal of Digital Contents Society
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• v.17 no.6
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• pp.489-497
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• 2016

This study focused on the focus group interview based on the questionnaire. Prior to the interview, we used questionnaires from the previous researchers in order to select the questionnaires and interviews of the focus group. In order to measure the possibility, which is the expression characteristic of the safety education app, the items related to cognitive, sensual, physical, and safety behaviors were used as constituent factors. And the safety education app to analyze was selected 'Water Go GO!' App developed by the National Emergency Management Agency. The results of this study are as follows: First, the learner should help to participate in learning continuously in order to make meaningful learning activities in safety education app learning environment. Second, learners must interact with mobile devices in their apps to facilitate learning while reducing the number of factors that can interfere with learners' learning. This study is meaningful in that it can utilize this design principle as a guideline for enhancing safety behaviors.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.4
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• pp.59-68
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• 2009

This paper addresses a hybrid multi-focus image fusion scheme using the recent curvelet transform constructions. Hybridization is obtained by combining the MS fusion rule with a novel "copy" method. The proposed scheme use MS rule to fuse the m most significant terms in spectrum of an image at each decomposition level. The scheme is dubbed in this work as m-term fusion in adherence to its use of the MSC (most significant coefficients) in the transform set at any given scale, orientation, and translation. We applied the edge-sensitive objective quality measure proposed by Xydeas and Petrovic to evaluate the method. Experimental results show that the proposed scheme is a potential alternative to the redundant, shift-invariant Dual-Tree Complex Wavelet transforms. In particular, it was confirmed that a 50% m-term fusion produces outputs with no visible quality degradation.

• Journal of Korean Academy of Nursing Administration
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• v.20 no.2
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• pp.154-166
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• 2014

Purpose: The core of accreditation for nursing education is to improve the ability and quality of graduates through a CQI system based on outcomes. For program outcomes of nursing education accreditation criterion, it is necessary to understand the relationship among education assessment, objective and curriculum. Methods: The focus of this study was on program outcomes and the assessment. First measures for improving the general problems of program outcomes associated with the assessment system were stated. Detailed measure for practicing program outcomes, the assessment system and the assessment tool using Rubrics were discussed. Results: Detailed measure were established for practicing the program outcomes, assessment system and assessment tool, which makes use of rubrics, program outcome No 3 of the Korean Accreditation Board of Nursing Education. Conclusion: Therefore it is expected that the assessment system established in this study will allow universities to conduct program outcomes and assessment.

• English Language & Literature Teaching
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• v.12 no.3
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• pp.123-145
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• 2006

The purpose of this study is to propose an efficient vocabulary assessment model in task-based language learning and to verify the viability of this assessment model. Bachman and Palmer (1996) pointed out the fact that many language tests focus on just one of the areas of language knowledge. However, researchers suggested that it is necessary to acknowledge the needs of several analytic scales, which can provide separate ratings for different components of the language ability to be tested. Although there were many studies which tried to evaluate the various aspects of vocabulary ability, most of them measured only one or two factors. Based on previous research, this study proposed an assessment model of general construct of vocabulary ability and tried to measure vocabulary ability in four separate areas. The subjects were two classes of university level Korean EFL students. They participated in small group discussion via synchronous CMC. One class used a lexically focused task, which was proposed by Kim and Jeong (2006) and the other class used a non-lexically focused task. The results showed that the students with a lexically focused task significantly outperformed those with a non-lexically focused task in overall vocabulary ability as well as four subdivisions of vocabulary ability. In conclusion, the assessment model of separate ratings is a viable measure of vocabulary ability and this can provide elaborate interpretation of vocabulary ability.

• Journal of Families and Better Life
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• v.28 no.4
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• pp.67-76
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• 2010

This study investigates working parent stress. This study surveyed 240 working mothers who are raising toddlers and 106 teachers in Seoul, Cyeong-gi, and Incheon. For this study, the Parenting Stress scale developed by Kim & Kang (1997) was used as the instruments for measurement and parental stress. To measure maternal separation anxiety, this study used the Maternal Separation Anxiety Scale (MSAS) developed by Hock (1989), while the Attitude for Occupation scale developed by Farel (1980) was used to measure the attitude for occupation. In addition, the Preschool Adjustment Questionnaire (PAQ) developed by Jewsuwan, Luster and Kostelink (1992), and modified by Oh Chong Eun (2001) were used as the instruments for measurement and adjustment. Data analysis was done using the SPSS WIN 15.0 version and the collected data were subject to a descriptive statistical analysis, one-way ANOVA t-test, and multiple regression analysis. The influential independent variables affecting parenting stress listed in order of significance were maternal attitude for occupation, adjustment of children, maternal anxiety, and income.

• Journal of KIBIM
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• v.5 no.2
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• pp.1-11
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• 2015

Despite a lot of research on BIM, there is no quantitative study to measure accurately the performance of BIM coordination service. Thus, this study suggested method to measure the performace of BIM coordination services, applying queueing models in the field of management science. To analyze queuing system of BIM coordination services, a group of BIM coordinator were selected. Through focus group interviews with experts were used in the analysis to derive mean arrival rate(${\lambda}$), mean service rate(${\mu}$) of BIM coordination services. Single-server queuing model(M/M/1), multiple server queuing model(M/M/s) is utilized for the BIM coordination services performance measurement in construction phase. This study has significant quantitative performance measurement approaches that can be utilized in the decision-making for the improvement of the BIM coordination services and to support the review of the alternatives accordingly. But There is a limit but it is difficult to take into account the increase or decrease of the cost of alternatives according to the review.