Sustainable energy systems are necessary to save the natural resources avoiding environmental impacts which would compromise the development of future generations. Delivering sustainable energy will require an increased efficiency of the generation process including the demand side. The architecture of the future energy supply can be characterized by a combination of conventional centralized po...

The performance of today’s chips varies over time due to active thermal management and energy conservation policies. Such changes in performance are necessary in thermally constrained systems that operate beyond sustainable thermal limits, such as Intel’s second generation Turbo Boost. This varying performance creates challenges in accurately benchmarking such systems. This paper gives examples...

In 1990, the Dutch Government adopted a national plan to develop integrated and comprehensive policies that would respond on a national, regional, and local level to the need for improved environmental quality for the welfare of current and future generations. The program, called the National Environmental Policy Plan (NEPP), represented a bold effort to develop cooperation and shared responsib...

The European Commission as well as the Polish government are promoting sustainable use of energy sources as a part of the dominating sustainable development paradigm. The development of low-emission energy sources engages the challenges of gradual depletion of coal, oil and natural gas reserves, as well as the intensification of the greenhouse effect. The energy policy should take into account ...

Wire-cut electric discharge machining is a nontraditional technique by which the required profile is acquired using sparks energy. Concerning wire-cut electric discharge machining, high cutting rates and precision machining is necessary to improve productivity and achieve high quality of machined workpieces. In this research work, an experimental investigation was introduced to achieve higher p...

Recently, scholars and practitioners have shown an increased interest in the field of sustainable supplier selection and order lot-sizing. While several studies have recently carried out on this field, far too little attention has been given to formulating a multi-objective model for the integrated problem of multi-period multi-product order lot-sizing and sustainable supplier selection under i...

environmental protection is a key element in urban management. due to complex relationships between human and environment in metropolises the importance of environment is ever-increasing. in this paper the current situation of environment in tehran metropolis including air, water, biodiversity and human habitat along with the most crucial threats, their effect as well as the associated agencies...

The transformation of existing energy systems into sustainable energy systems is a task which is related to several of the most urgent global problems, e.g. security of energy supply, shortage of resources, and climate change. Energy system modeling has played an important role in the computation of optimal possible future energy systems. In particular, technology oriented bottom-up energy syst...

Selectingsustainableenergysourcesisoneoftheeffortstoensuringoptimumenergyconsumption. However, the selectionprocess is not straight forward as it requiresmulti-criteria that inherited uncertaintyandqualitativeevaluation.Multi-criteriaevaluationthatbasedonfuzzysettheoryisone ofthewell-knownmethodstohandleuncertaintyindecisionmakingandvagueness...

The views expressed in the HKS Faculty Research Working Paper Series are those of the author(s) and do not necessarily reflect those of the John F. Kennedy School of Government or of Harvard University. Faculty Research Working Papers have not undergone formal review and approval. Such papers are included in this series to elicit feedback and to encourage debate on important public policy chall...