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The main objective of power system planning is maintaining an adequate level of reliability. The reliability concept has two characteristics: resource adequacy and operational reliability. Traditionally these two characteristics are addressed separately through a sequence of probabilistic and deterministic analyses without a systematic view. This paper presents a resource planning problem that explicitly...
The growing environmental concerns and increasing electricity prices have led to wider implementation of demand-side activities and created a new class of consumers, called demand response resources (DRRs). The DRRs actively participate in the electricity markets as buyers of electricity and sellers of load curtailment services. The demand profile modifications resulting from the DRR curtailments...
Today's capacity markets may be viewed as an additional source of income for generators to compensate the money lost due to regulatory imposed caps. Those additional money flows and other design characteristics serve, theoretically, to achieve system adequacy in a market environment. In this paper, we analyze key aspects of today's capacity market designs. Our main finding is that some design elements...
We report on an ultra-fast, pulse laser-driven droplet generation (PLDG) mechanism that enables on-demand droplet generation up to 10,000 droplets/sec, and continuous tuning of injected droplet volume ranging from 1pL to 150pL with precise volume control (0.26% volume variation) in a microfluidic device. On-demand droplet generation in PLDG is realized by focusing intense laser pulses into water to...
Grid is evolving to a more efficient global computing infrastructure by introducing more and more task scheduling algorithms. With the grid expansion and users' requirements in an intuitive way, a new robust multi-criteria scheduling algorithm is needed. Resource brokers should provide a more comprehensive solution for users. Multiple scheduling criteria addressed by the related grid research include...
The problem of sensor set selection for cooperative spectrum sensing in cognitive radio networks is considered in this paper. The cooperative gain of the newly added cooperative sensor decreases and converges to zero as the number of cooperative sensors increases, but the consumption of system resources grows approximately linearly with the number of cooperative sensors, therefore, the number of cooperative...
The condition-based maintenance (CBM) technique has been widely used in the power plant in China. Feed water pump is one of the most important general requirements in the power plant. Its reliability plays an important part in the safety of the complete running. On the basis of practical situation in one power plant, a system for condition-based maintenance of the feed water pump in said power plant...
In order to meet the demands of reliability and time-determination in wireless industrial network, and considering the features of limited resources in Low-Rate WPAN(Wireless Personal Area Network), we present a reliable routing protocol for WIA-PA (Wireless Networks for Industrial Automation-Process Automation) wireless industrial networks in this paper. We first develop an improved routing mechanism...
In recent years we perceive many researches on new techniques for improving the performance of fault-tolerant control systems. Prediction of correct system output is one of these techniques which can calculate and predict the probable correct system output when the ordinary techniques are incapacitated to make decision. In this paper, a performance model of predictive m-out-of-n hybrid redundancy...
The statistical inference of structural resistance includes not only the analysis to the structural reliability, but also the important contents in assessment of the degree of structural reliability. At present, the analysis to resistance basically belongs to the method of indirect inference, which is influenced by various factors such as computational model, statistical sample, the size of space...
The reliability of automated system management solutions will increase in importance as the use of cloud computing and data centres expands. As part of a study to improve reliability, this paper provides a classification of faults that can occur in automated system management and proposes a method for determining the severity of such faults. A baseline deployment is compared with an alternate proposed...
The management and automation of business processes have become an essential tasks within IT organizations. Companies could deploy business process management systems to automatize their business processes. BPMS needs to ensure that those are as dependable as possible. Fault tolerance techniques provide mechanisms to decrease the risk of possible faults in systems. In this paper, a framework for developing...
Voting algorithms are used in a wide area of control systems from real-time and safety-critical control systems to pattern recognition, image processing and human organization systems in order to arbitrating among redundant results of processing in redundant hardware modules or software versions. From a point of view, voting algorithms can be categorized to agreement-based voters like plurality and...
Study of P2P instability, acts of random nodes and so on. P2P application process makes a large number of nodes in the phenomenon of cheating. Some security algorithm based on P2P in general difficult to solve the above problems. PKI-based digital signature algorithms can solute to the above problems multi-well. In this basis, the introduction of the node behavior norms and behavior of a hierarchy...
In order to relieve the conflict between improving service quality and enhancing resource efficiency in Web proxy cache cluster, a new elastic Web proxy cache cluster-EWPCC is presented. Basing on the “on demand” characteristic of cloud computing, EWPCC could acquire resource from cloud when the Web cache system is overloaded and release unnecessary cloud resource after load down. In this way, using...
Recently the remarkable development of NAND flash technology makes possible the advent of SSD (solid-state device) that is considered to replace traditional HDD, due to its potential benefits such as low-power usage and reliability. In this paper, we present a hybrid file system, called hybridFS, whose primary objective is to put together attractive features of both HDD and SSD devices, to construct...
Diagnosis of diseases is well known problem in the medical field. Past research shows that medical database of disease can be train by using various neural network models. Many medical problems face the problem of curse of dimensionality due to the excessively large number of input attributes. Breast cancer is one such problem. We propose the use of modular neural network for effective diagnosis....
Poly-Si TFTs with vacuum cavity next to the gate-oxide edge (quasi T-gate TFTs) have been fabricated with the wet-etching of gate-oxide and in-situ vacuum encapsulation techniques. The device characteristics of the quasi T-gate TFTs are examined and better than those of conventional TFTs, resulting from the vacuum cavity as the offset region to reduce the leakage current and as the field-induced drain...
In modern safety-critical real-time embedded systems, performance and reliability are two most important parameters. The joint consideration of these two parameters is called performability. This paper evaluates and compares different schedulability conditions, which are used for scheduling tasks with fault-tolerant Rate-Monotonic (RM) algorithm, with respect to their performability. The task re-execution...
A mobile agent is a particular type of agent with the ability to migrate from one host to another where it can resume its execution. Mobile agents can be used in applications for wireless network to save bandwidth and time. In this paper we consider dependability aspect, especially reliability issues that need to be addressed before the mobile agents can be used for a broad range of commercial applications...
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