University of Malaya

About: University of Malaya is a education organization based out in Kuala Lumpur, Malaysia. It is known for research contribution in the topics: Population & Fiber laser. The organization has 25087 authors who have published 51491 publications receiving 1036791 citations. The organization is also known as: UM & Universiti Malaya.

The future of mobile cloud computing: Integrating cloudlets and Mobile Edge Computing

Abstract: Extending the coverage area of mobile cloud computing services will allow new services to be provisioned to the mobile users. The main obstacle for achieving this goal is related to the deployments challenges and limitations of the Cloudlets system. Mobile Edge Computing (MEC) system emerged recently providing an opportunity to fill the gap of the Cloudlets system by providing resources-rich computing resources with proximity to the end users. In this paper, we are proposing a hierarchical model that is composed of MEC servers and Cloudlets infrastructures. The objective of the proposed model is to increase the coverage area for the mobile users in which the users can accomplish their requested services with minimal costs in terms of power and delay. An extensive experimental evaluation is conducted showing the superiority of the proposed model.

Strategic orientations, sustainable supply chain initiatives, and reverse logistics

Abstract: Purpose – Global outsourcing shifts manufacturing jobs to emerging countries, which provides new opportunities for improving their economic development. The authors develop and test a theoretical model to predict first, how sustainable supply chain initiatives might influence reverse logistics outcomes and second, the impact of eco-reputation and eco-innovation orientation strategies on the deployment of sustainable supply chain initiatives. The paper aims to discuss these issues. Design/methodology/approach – The proposed new model of antecedents and outcomes of sustainable supply chain initiatives underwent a rigorous empirical test through structural equation modeling with samples from an emerging market. Findings – The results show that firms that implement sustainable supply chain initiatives can realize positive reverse logistics outcomes; the study also provides new insights into eco-innovation and eco-reputation strategic orientations as theoretically important antecedents of sustainable supply chain initiatives. Research limitations/implications – Though the authors identify three components of sustainable supply chain initiatives, other components could exist, and ongoing research should investigate them. Practical implications – The findings have important implications for managers in emerging markets seeking to initiate ecologically friendly business practices. The authors offer strong evidence of the benefits obtained from reverse logistics in sustainable supply chain initiatives. Policy makers and firms attempting to nurture sustainable supply chain initiatives should not overlook the important role of eco-reputation and eco-innovation strategic orientations, which the results identify as important enablers. Originality/value – This study offers evidence of the critical role of eco-reputation and eco-innovation strategic orientations in deploying sustainable supply chain initiative programs, as well as of their mutual effects. This study also offers empirical evidence that implementing sustainable supply chain initiatives leads to reverse logistics, creating value, and a new source of competitive advantages.

Pretreatment methods for lignocellulosic biofuels production: current advances, challenges and future prospects.

Abstract: Lignocellulosic biomass has been recognized as promising feedstock for biofuels production. However, the high cost of pretreatment is one of the major challenges hindering large-scale production of biofuels from these abundant, indigenously-available, and economic feedstock. In addition to high capital and operation cost, high water consumption is also regarded as a challenge unfavorably affecting the pretreatment performance. In the present review, advances in lignocellulose pretreatment technologies for biofuels production are reviewed and critically discussed. Moreover, the challenges faced and future research needs are addressed especially in optimization of operating parameters and assessment of total cost of biofuel production from lignocellulose biomass at large scale by using different pretreatment methods. Such information would pave the way for industrial-scale lignocellulosic biofuels production. Overall, it is important to ensure that throughout lignocellulosic bioethanol production processes, favorable features such as maximal energy saving, waste recycling, wastewater recycling, recovery of materials, and biorefinery approach are considered.