The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The operation scheduling is a crucial factor that can affect the economic and environmental benefits and operation reliability of the microgrids (MGs). However, widely used scheduling methods are lacking in the comprehensive consideration for the multi-objective (MO) property and robustness of the system operation. Also, the generated solutions might not diminish the disturbance of uncertainty under...
In this work, a job-flow scheduling approach for Grid virtual organizations (VOs) is proposed and studied. Users' and resource providers' preferences, VOs internal policies, resources geographical distribution along with local private utilization impose specific requirements for efficient scheduling according to different, usually contradictive, criteria. With increasing resources utilization level...
Cloud computing brings a rapid way for enterprises to launch a new software, which needs lower cost compared with self-purchased infrastructure. More and more enterprises compact their business software as services into cloud platform to the users. In service auction, the service provider aims to make more profits from the service it provides, but the service consumer hopes to select a good quality...
The behavior of network constraints in economic dispatch and unit commitment problem is examined in this paper. It analyses the constraints related to the power flow in a stochastic programming tool and tests different approaches for transmission loss computation. This work is part of an ongoing effort to develop tools for stochastic analysis of hybrid generation systems based up on the existing models...
In order to achieve the goal of economic and environmental mutual optimization of micro-grid system operation, a general model of multi-objective dynamic optimal scheduling is established, which takes the independent system simulation module and the operation optimization module as the core. The simulation module uses energy model to evaluate economic and environmental indexes of the system scheduling...
Technological development and restructuring of power system have encouraged the Independent Power Producers (IPPs) to connect their Distributed Energy Resources (DERs) to the existing power system. DERs can be used to its maximum efficiency through MicroGrid (MG). This also led to a path for Smart MicroGrid (SMG) where DERs are scheduled and dispatched economically as well as eco-friendly. Due to...
This paper is identified an optimum hydrothermal generation schedule using artificial bee colony algorithm (ABC) in order to minimize energy cost and pollutant emission release caused by fossil fuel based thermal power station in coordination with hydroelectric power plant for cleanliness environment. With the conflict objectives this scheduling problem is formulated as bi-objective optimization problem...
Achieving the required onboard serviceability of safety equipment at minimum cost is of interest to airlines. This paper addresses the integration of radio frequency identification (RFID) technology into aircraft maintenance programs to improve the economics of safety equipment inspections. A problem that airlines face, which is addressed in this article, is how to determine the frequency of scheduled...
Social and economic pressures are inducing the proliferation of plug-in electric vehicles (PEVs) in the market. As the power grid has a limited supply of electricity, this problem can be formulated as a resource allocation problem, minimizing costs of charging. In this paper we model the PEV charging problem to minimize the total cost of charging, taking into account distribution constraints. These...
Deregulated power industries increase the efficiency of electricity production and distribution, and offer higher quality, secure, and more reliable electricity at low prices. In a deregulated environment, utilities are not required to meet the total load demand. Generation companies (GENCOs) schedule the generators that produce less than the predicted load demand and reserve, but aim to deliver maximum...
This paper determines two solutions of Emergency resource distribution, according to the scene of disaster and the supplier distribution of emergency resource, the types and quantities of the inventory resource. The first one is the single save point - multi-disaster points integer programming model which offers three cases to determine the optimization distribution solution, and uses optimization...
Today the research on design for testability is becoming the research priority in the filed of SoC. However, the traditional research is limited in top level of SoC and it ignores the inference resulting from the scheduling strategy in IP-core level. In addition, the work on stage of SoC overly focuses on researching the minimum testing time of different WSC. It ignores the relationship between the...
This study deals with the joint multi-item replenishment problem under trade credit. All existing studies about trade credit focused on single-item replenishment policy. However, joint multi-item replenishment has been widely applied in many industries to take advantage of transport economies of scale. In this paper we extend the traditional inventory model by considering trade credit and multi-item...
As Grid technologies evolve quickly on Internet, research related to resource scheduling faces new opportunities and challenges. These new technologies, ideas and approaches provide a new environment for researching and developing the economy-based resource scheduling system. Aiming at the hierarchical Grid model, following utility optimization thinking, while an universal flexible utility function...
According to the relationship of coordinated interaction between unit output and electricity price, an economic/risk/environmental generation optimal model for maximizing total profits in the dealing day and minimizing both risk and emissions was formulated in this paper. A new multi-objective differential evolution optimization algorithm, which integrated Pareto non-dominant sorting and differential...
Grid resource management plays an important role while enabling the sharing and coordinating of resources in grid computing environments. Resource reservation is an important part of the grid resource management. An advance reservation is a scheduling object which reserves a group of resources for a particular timeframe for access only by a specified entity or group of entities. Combining resource...
We consider fair sharing of network resources over a period of time between offline and interactive users. The former value total transferred volume while the latter have time-dependent valuations for instantaneous bandwidth. Following the work of Kelly on fair bandwidth sharing, we express the system optimum as an equilibrium of traditional congestion control taking place in a fast timescale and...
For an engineering project with running income, the result of time-cost trade-off problems (TCTP) concerning construction duration is only partly optimal. More cash flow happens during the running period, and the final goal of clients is to obtain the maximal profit across the lifecycle of engineering projects. In some situations, the cost of compressing construction duration even exceeds the increase...
Since computation of grids enable the sharing, selection, query and aggregation of geographically distributed resources for solving large-scale problems, developing mechanisms for grid resource scheduling is a complex undertaking problem. We had investigated several famous schedule methods proposed by Nimrod-G, a famous computational economy framework for regulating the supply and demand for resources...
This paper assesses the function of travel agents instructing on the choice for scheduled services from regional comprehensive transportation. A investigation survey, excepting track transportation there are more than 400 bus lines in some mega-cities. Reasons for developing the travel agent instruction system include that the routes from one place to another is many, and the times of transforming...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.