نتایج جستجو برای: nonrenewable resources

تعداد نتایج: 267910  

2013
Xin Niu

Ocean wave energy conversion is a popular research area due to the increasing scarceness of nonrenewable energy resources. However, extracting wave energy is not a simple process. For example, the design and construction of wave energy take-o↵ devices that are reliable, long-lasting, and e cient is a non-trivial endeavor. In this report, the physics-based theories behind a permanent magnet line...

Environmental concerns and depletion of nonrenewable resources has made great interest towards renewable energy resources. Cleanness and high potential are factors that caused fast growth of wind energy. However, the stochastic nature of wind energy makes the presence of energy storage systems (ESS) in wind integrated power systems, inevitable. Due to capability of being used in large-scale sys...

Journal: :Science 2003
Jeffrey Chow Raymond J Kopp Paul R Portney

In order to address the economic and environmental consequences of our global energy system, we consider the availability and consumption of energy resources. Problems arise from our dependence on combustible fuels, the environmental risks associated with their extraction, and the environmental damage caused by their emissions. Yet no primary energy source, be it renewable or nonrenewable, is f...

1995
Richard A. Golding Peter Bosch Carl Staelin Tim Sullivan John Wilkes

spend much of their time idle, and various schemes have been proposed to use this idle time productively. We have used this approach to improve overall performance in storage systems. The most common approach is to off-load activity from busy periods to less-busy ones in order to improve system responsiveness. In addition, speculative work can be performed in idle periods in the hope that it wi...

Journal: :Geomatics and Environmental Engineering 2013

1997
Richard Golding Peter Bosch John Wilkes

spend much of their time idle, and various schemes have been proposed to use this idle time productively. We have used this approach to improve overall performance in storage systems. The most common approach is to off-load activity from busy periods to less-busy ones in order to improve system responsiveness. In addition, speculative work can be performed in idle periods in the hope that it wi...

2002
L. Zeballos

A hybrid Constraint Programming (CP) formulation able to address the multi-stage batch scheduling problem is presented. This approach handles different features found in industrial environments such as finite unit ready-times, dissimilar parallel equipment in each stage, sequence-dependent changeover times, topology constraints, forbidden job-equipment assignments, etc. Moreover, it renders goo...

2011
N. Ravi Shankar M. M. K. Raju G. Srikanth P. Hima Bindu Ravi Shankar

The completion time and nonrenewable resources are traditionally considered for construction of project. When renewable resources, quality and some criteria considered for the project, the risk related to criteria has to be taken into account. Thus project planning problem can be defined as multicriteria decision problem under risk. In this paper, a project scheduling problem including time, co...

2010

We study the optimal contracts (payment and extraction path) implemented by a regulator that delegates the production of a nonrenewable resource to a firm which has private information on costs (constant efficiency parameter). We assume the regulator is unable to commit and show that the standard contract that only distorts the inefficient firm’s production and leaves the efficient one with an ...

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