The Experts below are selected from a list of 98208 Experts worldwide ranked by ideXlab platform
Jun Kyun Choi - One of the best experts on this subject based on the ideXlab platform.
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strengthening trust in the future social cyber Physical Infrastructure an itu t perspective
IEEE Communications Magazine, 2016Co-Authors: Gyu Myoung Lee, Jun Kyun ChoiAbstract:Evolving toward a knowledge society requires a trusted ICT Infrastructure for sharing information and creating knowledge. To advance the efforts to build converged ICT services and reliable information Infrastructures, ITU-T has recently started to work on future trusted ICT Infrastructures. This article proposes a possible future Social-Cyber-Physical Infrastructure that acts as the glue for integrating the Physical, cyber, and social worlds with ICT, and outlines proposals toward an effort to find viable solutions for trust related problems while developing advanced technologies from an ITU-T standards perspective along with the trust conceptual model and the trust architectural framework.
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strengthening trust in the future social cyber Physical Infrastructure an itu t perspective
IEEE Communications Magazine, 2016Co-Authors: Taiwon Um, Jun Kyun ChoiAbstract:Evolving toward a knowledge society requires a trusted ICT Infrastructure for sharing information and creating knowledge. To advance the efforts to build converged ICT services and reliable information Infrastructures, ITU-T has recently started to work on future trusted ICT Infrastructures. This article proposes a possible future Social-Cyber-Physical Infrastructure that acts as the glue for integrating the Physical, cyber, and social worlds with ICT, and outlines proposals toward an effort to find viable solutions for trust related problems while developing advanced technologies from an ITU-T standards perspective along with the trust conceptual model and the trust architectural framework.
Bernard Yeung - One of the best experts on this subject based on the ideXlab platform.
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e commerce readiness institutional environment and international competitiveness
Journal of International Business Studies, 2001Co-Authors: Joanne E Oxley, Bernard YeungAbstract:A systematic cross-country analysis of e-commerce activity reveals that although Physical Infrastructure explains much of the variation in basic Internet use, e-commerce activity also depends significantly on a supportive institutional environment. Chief among the characteristics of such an environment are national respect for the “rule of law” and, secondarily, the availability of credible payment channels such as credit cards. These results suggest that an institutional environment that facilitates the building of transactional integrity is critical to the development of e-commerce.
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e commerce readiness institutional environment and international competitiveness
Journal of International Business Studies, 2001Co-Authors: Joanne E Oxley, Bernard YeungAbstract:A systematic cross-country analysis of e-commerce activity reveals that although Physical Infrastructure explains much of the variation in basic Internet use, e-commerce activity also depends significantly on a supportive institutional environment. Chief among the characteristics of such an environment are national respect for the “rule of law” and, secondarily, the availability of credible payment channels such as credit cards. These results suggest that an institutional environment that facilitates the building of transactional integrity is critical to the development of e-commerce.© 2001 JIBS. Journal of International Business Studies (2001) 32, 705–723
John Wilson - One of the best experts on this subject based on the ideXlab platform.
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export performance and trade facilitation reform hard and soft Infrastructure
World Development, 2010Co-Authors: Alberto Portugalperez, John WilsonAbstract:We estimate the impact of aggregate indicators of “soft” and “hard” Infrastructure on the export performance of developing countries. We derive four new indicators for more than 100 countries over the period 2004–07. Estimates show that trade facilitation reforms do improve the export performance of developing countries. This is particularly true with investment in Physical Infrastructure and regulatory reform to improve the business environment. The findings provide evidence that the marginal effect of the transport efficiency and business environment improvement on exports appears to be decreasing in per capita income. In contrast, the impact of Physical Infrastructure and information and communications technology on exports appears increasingly important the richer a country becomes. We also find statistical evidence on the complementarity between hard Infrastructure and soft Infrastructure, as captured by our indicators. Finally, drawing on estimates, we compute illustrative ad-valorem equivalents of improving each indicator halfway to the level of the top performer in the region.
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export performance and trade facilitation reform hard and soft Infrastructure
2010Co-Authors: Alberto Portugalperez, John WilsonAbstract:The authors estimate the impact of aggregate indicators of"soft"and"hard"Infrastructure on the export performance of developing countries. They build four new indicators for 101 countries over the period 2004-07. Estimates show that trade facilitation reforms do improve the export performance of developing countries. This is particularly true with investment in Physical Infrastructure and regulatory reform to improve the business environment. Moreover, the findings provide evidence that the marginal effect of Infrastructure improvement on exports appears to be decreasing in per capita income. In contrast, the impact of information and communications technology on exports appears increasingly important for richer countries. Drawing on estimates, the authors compute illustrative exports growth for developing countries and ad-valorem equivalents of improving each indicator halfway to the level of the top performer in the region. As an example, improving the quality of Physical Infrastructure so that Egypt's indicator increases half-way to the level of Tunisia would increase exports by 10.8 percent. This is equivalent to a 7.4 percent cut in tariffs faced by Egyptian exporters across importing markets.
Ying Song - One of the best experts on this subject based on the ideXlab platform.
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analysis model for server consolidation of virtualized heterogeneous data centers providing internet services
Cluster Computing, 2019Co-Authors: Bo Wang, Ying SongAbstract:Server consolidation based on virtualization technology simplifies system administration, reduces the cost of power and Physical Infrastructure, and improves resource utilizations in today’s service-oriented Internet data centers. How many servers for the underlying Physical Infrastructure are saved via server consolidation in virtualized data centers is of great interest to the administrators and designers of the data centers. Various workload consolidations differ in saving Physical servers for the Infrastructure. The impacts caused by virtualization to these concurrent services are fluctuating considerably which may have a great effect on server consolidation. This paper proposes an analytic model for server consolidation in virtualized Internet data centers based on the queuing theory. According to the features of these services’ workloads, this model can provide the supremum number of consolidated Physical servers needed to guarantee QoS with same loss probabilities of requests as in dedicated servers. We verify the model via a case study. The experiments results confirm the superior accuracy of our model and show that the virtual machine-based server consolidation saves up to 50% Physical Infrastructure and improves 50% CPU resource utilization as well as 2.67 times in I/O bandwidth utilization, satisfying required QoS.
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Utility analysis for Internet-oriented server consolidation in VM-based data centers
Proceedings - IEEE International Conference on Cluster Computing ICCC, 2009Co-Authors: Ying Song, Yuzhong Sun, Yanwei Zhang, Weisong ShiAbstract:Server consolidation based on virtualization technology will simplify system administration, reduce the cost of power and Physical Infrastructure, and improve utilization in today's Internet-service-oriented enterprise data centers. How much power and how many servers for the underlying Physical Infrastructure are saved via server consolidation in VM-based data centers is of great interest to administrators and designers of those data centers. Various workload consolidations differ in saving power and Physical servers for the Infrastructure. The impacts caused by virtualization to those concurrent services are fluctuating considerably which may have a great effect on server consolidation. This paper proposes a utility analytic model for Internet-oriented server consolidation in VM-based data centers, modelling the interaction between server arrival requests with several QoS requirements, and capability flowing amongst concurrent services, based on the queuing theory. According to features of those services' workloads, this model can provide the upper bound of consolidated Physical servers needed to guarantee QoS with the same loss probability of requests as in dedicated servers. At the same time, it can also evaluate the server consolidation in terms of power and utility of Physical servers. Finally, we verify the model via a case study comprised of one e-book database service and one e-commerce Web service, simulated respectively by TPC-W and SPECweb2005 benchmarks. Our experiments show that the model is simple but accurate enough. The VM-based server consolidation saves up to 50% Physical Infrastructure, up to 53% power, and improves 1.7 times in CPU resource utilization, without any degradation of concurrent services' performance, running on Rainbow - our virtual computing platform.
Marcos Levano - One of the best experts on this subject based on the ideXlab platform.
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video game script design for stability assessment of critical Physical Infrastructure affected by disasters
Ubiquitous Computing, 2015Co-Authors: Roberto G Aldunate, Oriel A Herrera, Marcos LevanoAbstract:Effective and efficient assessment of structural stability of critical Physical Infrastructure affected by a disaster is a key task during disaster response. However, real world training of staff performing this task is an operationally complex and expensive activity. This work presents a framework for the development of video games to improve the training of structural engineers on this assessment task. Preliminary results suggest that the approach taken by this initiative is valid and promising.
