KEYWORDS Parallel discrete event simulation, hybrid state saving , rollback-recovery mechanisms, performance evaluation. ABSTRACT Optimistically synchronized parallel discrete event simulators must sometimes undo, by rolling back parts of the system state, the erroneous over optimistic computation deriving from the decentralized management of the event list. For this reason, an essential part o...

People can adopt many different energy-saving measures, but how can they be encouraged to take action? Recommender systems could offer a solution, but how recommender systems are used and perceived will depend on the level of knowledge people have regarding energy-saving measures. We test an energysaving recommender system that uses Multi-Attribute Utility Theory (MAUT) to recommend energysavin...

Energy crisis, global warming and other environmental issues are what motivate researchers to find new strategies to reduce energy consumption in buildings. Recently, using phase change materials (PCM) in the building’s envelopes has drawn significant attention as an energy-saving method, which helps in increasing the building’s thermal capacity. In the present research, the effects of the main...

A new method pinch analysis is introduced to discuss design optimization of the air-conditioning refrigeration system from the point of view of saving energy and saving material, and the evaluation principle of system economy is built up. The method avoids the defect of traditional design method using experience, easy to realize optimum match between system component parts. c Cp COP F G H M p P...

BP artificial neural network is a non-feedback network. This paper utilizes the initial weights of neural network to choose controller performance. Simultaneously according to the characteristics that process of central air-conditioning energy saving control is the system of multi-parameter and nonlinear time-varying complexity, we analysis and study its algorithm and system architecture. The e...

This paper reports a new four-dimensional energy-saving and emission-reduction chaotic system. The system is obtained in accordance with the complicated relationship between energy saving and emission reduction, carbon emission, economic growth, and new energy development. The dynamics behavior of the system will be analyzed by means of Lyapunov exponents and equilibrium points. Linear feedback...

Collecting webpage messages can serve as a sensor for investigating the energy-saving potential of buildings. Focusing on stores, a cloud sensor system is developed to collect data and determine their energy-saving potential. The owner of a store under investigation must register online, report the store address, area, and the customer ID number on the electric meter. The cloud sensor system au...

This Issue Brief addresses three questions raised by recent trends in personal saving: How are national savings measured and what is the meaning of the trends in measured personal saving rates, given what is included and what is not included in those measures? What is the effect of retirement saving programs--in particular, 401(k) plans and individual retirement accounts (IRAs)--on personal sav...

To improve the management of irrigation district is a key to develop water-saving agriculture. Based on the basic principles of water-saving irrigation, and using the method of Modified Penman Monteith and water balance equation, The system of irrigation management and decision support based on WEBGIS was developed,which is according to the soil moisture, crop growth status, meteorology change ...