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Block traces are widely used for system studies, model verifications, and design analyses in both industry and academia. While such traces include detailed block access patterns, existing trace-driven research unfortunately often fails to find true-north due to a lack of runtime contexts such as user idle periods and system delays, which are fundamentally linked to the characteristics of target storage...
Belief fusion consists of taking into account multiple sources of belief about a domain of interest. This paper describes cumulative and averaging multi-source belief fusion in the formalism of subjective logic, which represent generalisations of binary-source belief fusion operators previously described. The advantage of this approach is that we can model and analyse belief fusion situations involving...
Big data is cutting-edge technology extensively applied to enterprise management based on cloud computing, and it brings a brand-new perspective for enterprise crisis management. Using big data technology to collect, screen, analyze and apply data generated by enterprise crisis incidents and formulating and implementing data-driven enterprise crisis management strategies help to elevate level of enterprise...
License-assisted access (LAA) is a candidate feature in 3GPP Rel-13 to meet the explosive growth of traffic demand. The main idea of LAA is to deploy LTE in the unlicensed band (mainly the 5GHz band), which is abundant with available spectrum. However, the major concern is the coexistence between WiFi and LAA in the same band. This paper presents a new framework to evaluate the downlink performance...
Virtual networks mapped over a physical network can suffer from network disconnection due to disasters. We propose an integer linear programming model to restore physical links with maximizing connectivity of virtual networks.
The Delay/Disruption Tolerant Network (DTN) is characterized with intermittently connectivity and frequent partitions. Due to this, the DTN routing algorithm is very vulnerable to various kinds of malicious attacks. In this paper, combined with many other DTN forwarding approaches, we propose a multi-stage routing forwarding algorithm so as to further improve network throughput. To ensure the security...
Exponentially growing demand for mobile data is pushing the existing mobile networks to the limit. In addition to offloading traffic onto WiFi access points (APs), dual-band femtocells (DBFs) that can simultaneously access both the licensed and unlicensed bands have been proposed for cellular networks to further exploit the unlicensed spectrum. However, the coexistence between DBFs and WiFi in the...
This work aims to carry out an assessment of power quality at the Point of Common Coupling (PCC) in the scenario of offshore wind farm integrated into the power network whilst reduce the impact of index discrepancy and uncertainty. We acquire the judgmental matrix by using analytic hierarchy process (AHP) and obtain the index weights for power quality assessment by combining the compatibility matrix...
The measurement and analysis of power quality for grid-connected offshore wind farm is one of the key issues. This paper attempts to address this technical challenge through a simulation-based study by the use of PSCAD/EMTDC models. We consider an equivalent model with 50MW capacity for offshore wind farm consisting of 10 doubly fed induction generators (DFIGs) to analyze the power quality at the...
With the development of cloud computing,as a cloud computing service, cloud storage widely applied to enterprises and people's daily life in the form of the public cloud storage, hybrid cloud storage , internal cloud storage. In the current internet environment, the annual investment in providing public cloud storage services is more than ?500 million. More and more companies have joined the R &...
We analyze the performance features of dynamic flexible grid WDM networks from the mathematical angle. A continuous-time Markov model for links is proposed and matches Monte Carlo simulation results exactly.
It is important task to discover communities or hidden groups by analyzing the messages collected in social networks. For the case when some members of a community are known, a proper method is still necessary to infer the remaining community members. To address such an issue, we develop a closeness centrality examination algorithm to obtain the remaining community members with some known community...
Beyond 3G mobile networks will be data service centric. It is anticipated that UE will stay in the Connected State relatively long while supporting data services, so efficient power saving mechanisms for the Connected State are more significant in order to prolong the active time of a handset. Discontinuous Reception (DRX) is a dominant approach for power saving in the Idle State and the Connected...
A typical approach utilized for automated test case generation is to create a model of the implementation under test. Extended Finite State Machine (EFSM) is among the most popular models for model-based testing. However, automated test case generation on EFSM models is still a challenge task as a result of the fact that an EFSM model may contain infeasible paths. In this article we present a novel...
It was difficult for the traditional analytical method to analyze the acoustics characteristics of acoustics sensors. In order to solve the problem, a method based on the Finite Element Method (FEM) was investigated combining with the technology of harmonic response analysis. After presenting the basic math method theory of finite element, the harmonic response analysis model of ultrasonic liquid...
Enterprise management is improving its capacities, with its practice being advanced. However, it is facing greater challenge of transformation and upgrading, as the result of fiercer competition and accelerated globalization driven by global economic changes and IT revolution. Based on three years of studies of thousands of enterprises in 12 industries, jointly conducted by the experts and scholars...
According to the actual problems of the standard charges in colleges, in this article, firstly, we build two optimized models on the basis of the financial budgets of colleges; secondly, by means of the actual statistics of a certain science and technology college of a province, we use the optimized models to calculate the standard charges, the sums of needed loan and fee remission in 15 majors of...
For the characteristic of short storage life and quick value decay for Short Lifecycle Products (SLPs), it is supposed that suppliers provide Quantity Discount Pricing (QDP), lead time and demand rate comply with stochastic normal distributions, and stock-outs are permitted. And the optimal ordering models of SLPs were developed for discrete and continuous stochastic demand. Then the arguments analysis...
Online price comparison agents (shopbots) allow consumers to instantaneously receive price and other information from many online retailers. Contrary to conventional wisdom, our empirical study of the book and computer hardware categories reveals that consumers are visiting more online retailer web sites after using shopbots. This finding suggests that after searching for an item through a shopbot...
We develop an analytical model and conduct subsequent empirical analyses using data collected from the online retailers of digital cameras and video games. We find that (1) Internet retailers' base prices are positively associated with shipping quality but shipping charges are negatively associated with shipping quality; (2) Internet retailers will increase base prices when they offer free shipping;...
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