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Cloud data centers contribute greatly to global warming, because most of the energy is generated by burning fossil fuels. In view of this, many cloud data centers are trying to power their data centers using renewable energy. In this paper, we propose a green scheduling architecture for the geographically distributed cloud data centers with time-varying and location-varying electricity prices. To...
This paper proposes an adaptive neural-fuzzy inference system (ANFIS) based maximum power point tracking (MPPT) system for a photovoltaic (PV) power generating system in standalone operation. To extract the maximum power, the DC-DC buck/boost converter is connected between the PV module and the load. The proposed ANFIS-based MPPT controller performs the fast dynamic response with high accuracy. With...
Providing continuity services for end-users roaming across the overlapping access networks has been a challenging issue, the IETF hence proposes FMIPv6 acting the cross layer handover management to provide better mobile services. FMIPv6 mainly achieves the pre-registration by obtaining the timely link layer (L2) trigger. The timely L2 trigger hence is crucial for guaranteeing the handover performance,...
This paper proposed a new planning method for distribution networks based on total supply capability (TSC). Firstly, 10 planning measures were summarized in 3 types with their priorities. Secondly, an overall planning process was proposed, composed of the following steps: 1) The TSC and maximum supply capability (MSC) were calculated. 2) The TSC and MSC were used to verify whether they could match...
For the purpose of simplification, the secondary system of power distribution network can be classified distribution automation,smart meter, load monitor,power utility information collection and communication system which provides secure, reliable and real-time communication channel for the above application. According to the security protection regulation of secondary system, distribution automation...
The Analytic Hierarchy Process (AHP) is a structured technique for helping people deal with complex decisions. It is used throughout the world in a wide variety of decision situations. In the paper AHP is introduced and applied to university performance assessment.
To restore post-contingency system solvability, a new minimum load shedding approach is proposed. Using the damped Newton-Raphson methed, the system minimum mismatch function is calculated to identify the weakest bus and determine the most effective load shedding strategy. The weakest bus voltage of minimum mismatch solution is set as known parameter and the scaling load coefficient of the shedding...
Based on credibility theory, this paper firstly constructs a new type of fuzzy transportation expected value model with credibility constraint, in which the transportation cost and the man-power coefficients are uncertain and assumed to be characterized by fuzzy variables with known possibility distributions. Then we discuss some basic properties with respect to the objective function and credibility...
The ancient city relics in Jinyang have a long history, and Jinyang is a very important burial region of ancient culture. It has abundant relics with unique burial forms under the ground. Due to the wide measured range of the target layers and target articles which is from centimeters to meters, and the different requests of the resolution, we take the method combining with the high density resistivity...
Based on credibility theory and two-stage fuzzy optimization method, this paper presents a new class of dynamic capacity acquisition and assignment model. Then we deal with the approximation of fuzzy two-stage dynamic capacity acquisition and assignment problem. After that, a heuristic algorithm, which combines approximation approach, neural network (NN) and simulated annealing (SA), is designed to...
To model fuzzy dynamic capacity acquisition and assignment, the paper considers a fuzzy expected value model based on credibility theory and two-stage fuzzy optimization method. After that, a solution approach, which combines fuzzy simulations, neural network (NN) and genetic algorithm (GA), is designed to solve this proposed two-stage fuzzy dynamic capacity acquisition and assignment problem. At...
Fuzzy measure and integral are widely used in multiple classifier system (MCS). But the number of coefficients involved in the fuzzy integral model grows exponentially with the number of classifiers to be aggregated. The main difficulty is to identify all these coefficients. This paper does an attempt Using 2-additive fuzzy measure in multiple classifier system. Our conclusion is that when different...
Through massive experiments we found that for the binary text image embedding algorithm which hiding information by flipping central pixels of the image block, the statistics of run length between cover image and the image after been embedded is different obviously, but which between stego image and the image after test embedding is similar. Based on this law, a novel technique for the steganalysis...
A parallel processing architecture for sampling rate conversion in all-digital receiver is proposed in this paper. According to the time shifting property of the FT, the DFT of the desired output samples can be evaluated by the input samples. And the DFT-like transform in this constructed expression can be fast computed by the famous butterfly structure. To overcome the inherent saddle error of this...
Based on the special basis functions, a piecewise function with adjustable parameters is used to construct the impulse response of the interpolation filter. These parameters are then calculated when this function approximates the desired impulse response according to some optimization criterion in time domain. This polynomial-based interpolation filter can be efficiently implemented using a modified...
The phase entropy based algorithm for carrier frequency offset estimation is non-data-aided and provides outstanding performance. However, it demands long-duration signals to provide good performance, and this leads to high search complexity and computation complexity. This paper proposes a phase-wrapping method for probability density function estimation which is the key process of the estimation...
Based on credibility theory and two-stage fuzzy optimization method, this paper presents a class of multi-product multi-period (MPMP) production planning problem. Some basic properties about the two-stage production-planning model are discussed. In addition, a heuristic algorithm, which combines fuzzy simulations and genetic algorithm (GA), is designed to solve the production planning problem, and...
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