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Abstract-The growth of networking services has led to an increase of users using these services. Because of the limitation of network infrastructure, each physical server is typically used for deploying a networking service for a group of users. In this model, data is centrally stored; As a result, ensuring its privacy is a critical requirement. In current systems, an administrator could use access control mechanisms provided by operating systems to prevent illegal access. However, these solutions are difficult to deploy and operate. Because of this issue, the administrator has difficulty comprehensively handling data security issues in a shared environment. In this paper, we propose a new approach using virtualization concept for securing data in this shared environment. The approach has been successfully implemented in the Linux environment, and has shown positive results. It can properly solve data security problems in the shared environment and surmount the weaknesses found in current solutions.

In supporting research on the socio-economic implication of energy policy, future scenarios are needed. Currently, most of the developing countries, especially in Southeast Asia, do not have specific targets for energy development rather than putting their main focus on economic growth. However, under natural constraints, especially energy resources, these countries must develop their own pathways in order to achieve socio-economic targets without compromising the environment and scarce natural resources. This paper provides the methodology to develop the platform of socio-economic and energy scenarios that includes two main steps. Firstly, the controversial parameters such as GDP and population are developed to be scale indices. Lately, the scale-based linear complement uses these scale indices to estimate the full-trend scenario for other parameters. The GAMS (General Algebraic Modelling System) programming is used in the processes of scale index development and scenario complement.This study provides the social, economic, and energy platform for researchers and policy-makers in analyzing the implication of socio-economic development to energy consumption as well as the possible CO 2 emissions, towards achieving sustainable development. Similarly to Vietnam, other developing countries may also face the lack of an energy database problem. Therefore, this study can be improved and expanded to those countries, especially in the Asian Pacific region.