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Memory price will continue dropping in the next few years according to Gartner. Such trend renders it affordable for in-memory key-value stores (IMKVs) to maintain redundant memory-resident copies of each key-value pair to provision enhanced reliability and high availability services. Though contemporary IMKVs have reached unprecedented performance, delivering single-digit microsecond-scale latency...
Aiming at the accurate prediction of APU residual life in civil aviation, Fusion of historical state performance monitoring data, a method of APU residual life prediction based on proportional hazards model (PHM) is proposed. This method first gives a life prediction algorithm based on PHM. Then, based on the historical performance degradation data and historical failure time data, the genetic parameters...
As a new way of power transmission, wireless power transmission (WPT) technology has an influence on the sides of lives, medical treatment, etc. In this paper, we did model analysis and simulation using its equivalent circuit model, which is on the basis of existed WPT technology. According to the most widely used MCR-WPT technology, we have built two-coil model and done simulation analysis so as...
This study proposes a new car-following (CF) model considering the effect of visual angle under the non-lane-discipline environment. In particular, the visual angle of the driver between the following vehicle and the preceding vehicle as well as its change rate is considered on a road without lane discipline. Stability analysis of the proposed CF model is performed using the perturbation method to...
Spark has grown both in popularity and complexity in recent years. In order to use available resources in an efficient way, users need to understand how the behavior of their applications is affected by the size of the datasets and various configuration settings. Indeed, Spark allows users to specify many configuration parameters and understanding the impact of these choices with respect to the application...
For the lack of systematic research of lightning protection design of the wind turbine, it is necessary for further study of the transient effect caused by lightning. Essentially, the process that lightning current flows through the turbine is a wave process. In this paper, wave-process theory is adopted when effect of wave process on the transientpotential is analyzed. With the software ATP-EMTP,...
With the rapid growth of usage of social network, the patterns, the scales, and the rate of information exchange have brought profound impacts on research and practice in finance. One important topic is the stock market efficiency analysis. Traditional schemes in finance focus on identifying significant abnormal returns triggered by important events. However, those events are merely identified by...
The growing demand for higher reliability of software poses an unprecedented challenge to the software industry. Software Process control and Improvement is the important part for high quality software development processes. However, software process risk management is not concerned. To integrate efficient process risk management and CMMI is the goal of this paper. A software process risk measurement...
Patient flow, on one hand, represents the progression of a patient's health status; on the other hand, can be thought of the transferring of patients through multiple hospital units within a hospital or among different hospitals. Furthermore, patient flow, in the aggregate, is equivalent to the demand for health care services. Thus, patient flow management is of great importance to monitor and control...
With the prevalence of geo-position devices GPS and smart phones, textual information, long or short, associated with GPS tags usually denoted by a coordinate with latitude and longitude is widely encountered on the Web. For example, in Twitter, smart phones record the location of every tweet after it is authorized. The spatial objects on Google map are also presented with some textual descriptions...
It is well known that the variability model, which captures the commonality and variability of the software product families, is very important to the software product line. Current software product line variability modeling methods relies on the analysis ability of the domain analysts heavily. When the single system of product families is large, it will be difficult to establishing the variability...
An exact grasp of the electricity consumers' demand response characteristics (DRCs) plays an important role in designing and achieving the potential benefit of demand response (DR) programs. In order to analyze the DRCs of industrial electricity consumers in the time of use (TOU) pricing program, a DR model based on the Support Vector Machine (SVM) regression algorism is proposed in the paper. With...
To improve working performance of small axial flow fan, a new improved structure was proposed "numerical computation carried out for two sets of fan models using RNG k-e model. The results indicats that the improved models of the two sets have the same trend in static characteristics and flow distribution. Conclusions are as follows: (1) The improved results is satisfactory in static chateristics...
Virtual machine (VM) provisioning is one of the fundamental components in virtualization-based cloud offerings. Modeling and analytically understanding the provisioning process is critical for the deployment and management of large-scale cloud. Based on extensive experiments on an example cloud system, we propose a queueing model to capture the important features related to scalability for the provisioning...
Distributed systems with multi-stage workflows are characterized by multiple logical stages which can either execute sequentially or concurrently and a single stage can be executed on one or more physical nodes. Knowing the mapping of logical stages to physical nodes is important to characterize performance and study resource bottlenecks. Often due to the physical magnitude of such systems and complexity...
Recent technology trends are leading to the possibility of computer systems having last level caches significantly larger than those that exist today. Traditionally, cache effectiveness has been modeled through trace-driven simulation tools, however, these tools are not up to the task of modeling very large caches. Because of the limited length of available traces, the tools cannot capture behavior...
E-business (EB) is one of the most extensive and successful areas enabling the information technology, where more and more enterprises and customers set up the business within this platform. In this paper, the e-business patterns of B2B2C for the small and medium enterprises are introduced. Then the paper brings forward the logistics operation patterns which are applied within this e-business pattern...
Carrier aggregation (CA) is introduced in Long Term Evolution-Advanced (LTE-A) to provide larger bandwidth and higher peak rate for a single user. L1 control signaling design is very critical for implementing CA, and Ack/Nack feedback for CA is particularly challenging in time division duplexing (TDD) mode due to the potential large UL/DL asymmetry and limited transmit power in UL. This paper addresses...
When auditing the large enterprise groups with many accounting subjects, in order to find. the doubtful auditing points quickly in the mass electronic data, we designed and developed a accounting report procedure for single subject according to the logic of balance sheet with the parallel simulation; adopted the associative rules to mine the audit features of electronic data, and combined with the...
An analytical framework has been developed to describe the locking behavior of millimeter (mm) wave current-mode logic (CML) frequency divider. Unlike traditional analysis based on RC delay, the proposed model is established with injection-locking concept from analog perspective. Both analytical formulas and graphic interpretation are provided for design insights. The model has been validated by exhaustive...
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