• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권2호
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• pp.522-541
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• 2016

Network virtualization provides an effective way to overcome the Internet ossification problem. As one of the main challenges in network virtualization, virtual network embedding refers to mapping multiple virtual networks onto a shared substrate network. However, existing heuristic embedding algorithms evaluate the embedding potential of the nodes simply by the product of different resource attributes, which would result in an unbalanced embedding. Furthermore, ignoring the hops of substrate paths that the virtual links would be mapped onto may restrict the ability of the substrate network to accept additional virtual network requests, and lead to low utilization rate of resource. In this paper, we introduce and extend five node attributes that quantify the embedding potential of the nodes from both the local and global views, and adopt the technique for order preference by similarity ideal solution (TOPSIS) to rank the nodes, aiming at balancing different node attributes to increase the utilization rate of resource. Moreover, we propose a novel two-stage virtual network embedding algorithm, which maps the virtual nodes onto the substrate nodes according to the node ranks, and adopts a shortest path-based algorithm to map the virtual links. Simulation results show that the new algorithm significantly increases the long-term average revenue, the long-term revenue to cost ratio and the acceptance ratio.

• 한국생활과학회지
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• 제20권5호
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• pp.993-1008
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• 2011

An increase in interests in consumers' social responsibilities, or ethical spending, starts from a recognition that the consumption of an individual does not stop with the individual, but also affects overall society. The recognition of consumers' social responsibilities leads to demands for corporate social responsibility. Therefore, this study analyzed how social responsibility recognition affects consumers' needs for corporate social responsibility using college students. All data was analyzed with the SPSS Windows 18.0 program in terms of frequency, Crobach's ${\alpha}$, factor analyses, paired t-test, one-way ANOVA, and multiple regression. The results are as following: first, the recognition level of consumers' social responsibilities in college students was at an average level and the consumer's needs for corporate social responsibility were higher than usual. Second, the grade level, military experience, and economic status of the college students changed their views on consumers' needs for corporate social responsibility. Groups with higher consumers' social responsibilities had higher consumer demands for corporate social responsibility. Through this, we can see that consumers' social responsibilities affects the consumer's needs for corporate social responsibility.

• The Journal of Asian Finance, Economics and Business
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• 제7권8호
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• pp.309-321
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• 2020

This study aims to examine the effects of strategic management accounting on firm performance of finance businesses in Thailand. Strategic management accounting comprises of environmental scanning, competitor orientation and forward-looking information. In this study, 175 finance businesses in Thailand are the samples of the study. A mail survey procedure was used for data collection. The hierarchical multiple regression analysis is employed to test the research relationships. Firstly, environmental scanning positively affects operational excellence, organizational effectiveness and firm performance. Secondly, competitor orientation is positively related to managerial efficiency and organizational effectiveness. Thirdly, forward-looking information has a positive influence on operational excellence, managerial efficiency, organizational effectiveness, and firm performance. In addition, operational excellence, managerial efficiency and organizational effectiveness have positive impact on firm performance. Finally, to verify the mediating effects, operational excellence, managerial efficiency and organizational effectiveness are the mediators of the research relationships. This study confirms that all dimensions of strategic management accounting play a significant role in determining business outcome as being congruent with the theory of resource-based views of the firms. Executives of firms need to provide valuable resources and capabilities to support the strategic management accounting implementation in order to achieve good business outcome in highly competitive environments.

• 가정과삶의질연구
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• 제31권3호
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• pp.141-151
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• 2013

The purpose of this study is to test the economic rationality hypothesis of the low fertility trap among 412 college students at 13 private universities located in Seoul. The respondents were requested to complete the self-administered questionnaire, and the hierarchical multiple regression analyses were performed for analyzing the data. The major findings of this study were as follows: First, the students' views on the prospects for their future employability were 54.6% for big business, 64.51% for medium-sized business, and 49.63% for public sector. In the most employable job, the mean desired monthly salary was 3,505,400 won, while the mean expected monthly salary 2,753,600 won. Second, hierarchical regression analyses revealed that the family income in parental home was positively related to youths' consumption aspirations. Finally, the gap between youths' consumption aspirations and their expected income was negatively related to their desired number of children, while not significantly related to their planned age of first child birth. Thus, the low fertility trap hypothesis was supported in terms of birth rate drop, but not supported in terms of childbearing postponement. The implications of the study results are discussed.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2015년도 추계학술대회
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• pp.71-73
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• 2015

본 논문에서는 여러 대의 Microsoft Kinect 와 NVidia 사의 GPGPU 라이브러리 CUDA 를 사용하여 실시간 Free Viewpoint TV System 을 제안한다. Kinect 로부터 얻어진 컬러 및 깊이 영상을 통하여 두 카메라 사이의 가상시점에서 영상을 실시간으로 출력하는 시스템을 설계한다. 이 과정에서 많은 연산량을 요구하는 좌표계 변환 과정과 IR 패턴의 간섭문제를 해결하기 위해 사용되는 Nearest Neighbor 홀 채움 방식을 CUDA 를 이용해 병렬화시켰다. 실험 결과 CUDA 를 이용해 구성한 시스템이 기존의 CPU 만을 이용해 구성한 시스템보다 같은 시간 동안 더 많은 합성영상을 만들 수 있었다.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2015년도 하계학술대회
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• pp.122-124
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• 2015

본 논문에서는 Microsoft 에서 나온 여러 대의 Kinect 를 이용하여 Free Viewpoint TV System 을 구현해 보고자 한다. Kinect 로부터 얻어진 색상 영상과 깊이 영상을 통하여, 실시간으로 두 대의 카메라 사이에서의 가상시점에서 영상이 출력되는 시스템을 설계한다. 또한, 여러 대의 Kinect 를 이용할 때, 간섭현상으로 인해 IR 패턴을 제대로 인식하지 못하여 홀이 생성되는 문제점을 확인하고, Nearest Neighbor 방식과 Inpainting 기법을 사용하여 홀을 제거하는 방식을 소개한다. 실험 결과, 홀의 주변과 비슷한 값으로 홀을 채울 수 있었지만, 홀의 크기에 따라 Edge 경계가 부정확해 지는 현상을 확인할 수 있다.

• 생명과학회지
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• 제7권4호
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• pp.262-269
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• 1997

There are many different views of the opinion that smoking decreased the HDL cholesterol. So this cross-sectional study was attempted to find the influence which smoking, alcohol and weight affect HDL cholesterol. They were two groups;smoking group(409 males) and nonsmoking group(213 males). And HDL cholesterol, triglyceride, and total cholesterol of smoking group were compaired to them of nonsmoking group. Also the variables of age, relative weight, and alcohol were compaired. The HDL cholesterol of nonsmoking group was 47.2$\pm$10.1 mg/dl and the HDL cholesterol of smoking group was 45.5$\pm$10.7mg/dl. So there were no statistical difference. As smoking was increased in amount, HDL cholesterol was decreased slightly. According as the alcohol intake increases, especially only the HDL cholesterol of the moderate alcohol intake(101-200gm/week) group was significantly increased(P<0.05). As relative weight increases, HDL cholesterol were significantly decreased(P=0.007). Smoking was not statistical difference of HDL cholesterol. Moderately alcohol intake group(101-200gm/week) were increased the HDL cholesterol(P<0.05). Only relative weight was statistically decreased the HDL cholesterol(P<0.01). Multiple regression results that relative weight and alcohol were significant variable of the level of HDL cholesterol.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제22권1호
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• pp.19-33
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• 2019

While the field of mathematics education strives to promote equitable mathematics learning and identifies it as a core instructional practice, less is known about its effective enactment. As teachers' teaching practices are dependent on their views and beliefs, this study investigated 133 elementary pre-service teachers' (PSTs') interpretations of diverse learners' learning experiences and proposed accommodations for them as reflected in their lesson planning process. Findings showed that PSTs came up with some strategies that are often suggested in teacher education literature, such as using multiple modes of representation and various grouping strategies. However, their responses were generic in nature rather than specific to diverse learners. Also, it was noted that many PSTs' interchangeably referred to the English Language Learners (ELLs), struggling learners, and culturally diverse learners, inferring that they thought that culturally diverse students must have been ELLs and that ELLs or culturally diverse students must have been weaker students in math. We found that the PSTs used their own frames while filtering and discarding information about diverse student populations to develop instructional plans, rather than based on the results of assessments of learning. We suggest that it is the critical first step to unwrap PSTs' unproven assumptions to better equip them for working with all of their future students.

• Human Ecology Research
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• 제57권2호
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• pp.171-183
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• 2019

Convergence between technology and financial services is ubiquitous and widespread. Virtual banks represent an important aspect of financial markets that can generate value added for consumers and enhance the quality of financial services. This study explores the effect of innovation characteristics (relative advantage, compatibility, and perceived risk), consumer characteristics (status quo bias), and social mechanisms (network externality: complementarity, numbers of peers) on consumers' adoption intention and resistance to virtual banks. This study adopted an innovation resistance model with two dependent variables: adoption intention and resistance to virtual banks. An online self-administered survey was conducted and 532 or non-users of virtual banks aged 20 to 69 years old were analyzed. Frequency analysis, descriptive analysis, and hierarchical multiple regression indicated that status quo bias, relative advantage, perceived risk, complementarity, and number of peers insignificantly influence the adoption intention regarding virtual banks. Furthermore, status quo bias, relative advantage, perceived risk, and number of peers insignificantly influence the resistance to virtual banks. Female respondents have a lower adoption intention and higher resistance to virtual banks than male respondents. The findings suggest that the innovation resistance model can be useful in understanding consumers'adoption and resistance behavior as well as reveal that innovation characteristics, consumer characteristics, and social mechanism are important antecedent variables of the innovation adoption decision.

• 디지털산업정보학회논문지
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• 제10권4호
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• pp.171-180
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• 2014

Screen golf may be said as one of the most successful digital contents business along with the game industry. The success of the screen golf is because the high tech virtual reality technology is applied to the business in a way that it can meet the five senses of human and that the user can be absorbed into it. In addition, the interaction and playfulness in the screen golf helps the users to get more involved in the game, thus enhancing its value as one of the entertainments. Especially, this study focuses on its interaction and playfulness, which helped the screen golf succeed as a business because they help people to get more absorbed in the game through the communication and fun. From this point of view, the screen golf can be considered to have the best characteristics by which the users can be motivated to use the screen golf. Now along with the public success of the screen golf, the screen golf is recognized as the core field of digital contents. So, the screen golf needs the approaches and researches from multiple points of views, including culture and arts.