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One of the fundamental challenges for Peer to Peer (P2P) systems is the ability to manage risks involved in interacting and collaborating with prior unknown and potentially malicious parties. Reputation-based trust management systems have proven to be essential to enforcing cooperative behavior in P2P networks. However, in many existing reputation-based trust models, the validity of peers' trust valuation...
Most monitoring or tracking applications require the localization information in wireless sensor network. The DV-Hop provides a basic scheme to retrieve the localization without GPS information. DV-Hop scheme only uses the localizations of the reference nodes and the hop-count, so the fundamental estimation may cause the larger error than range-based schemes. The proposed scheme uses the neighbor...
Domain name is a new type intangible of enterprise. For the reason that we don't recognize and measure the domain self-constructed in financial accounting system, there are little study on domain's value estimation and the factors influencing its value. For the absence of value measurement, domain name's valuation management is weak in firm. With the growth of domain trade-off, how to value it become...
3S (Remote Sensing System, Global Position System, and Geographical Information System) provides an entirely new kind of data source for estimating OD matrices. In this paper, we go over our recent works in this field and address the following points: how to pre-process the 3S data collected? How to apply the 3S data for estimating OD matrices without surveys? How to test the results? Finally, the...
Due to the increasing competition of globalization and fast technological improvements, manufacturing enterprise pay more attention to its purchasing risk. In this paper, we proposed a supply chain purchasing risk evaluation system of manufacturing enterprise based on Fuzzy Analytic Hierarchy Process(FAHP). The FAHP with probability is introduced to provide more information and meet practical things...
This paper proposes a method to develop the multinomial logit(MNL) model for a sequence of choices behavior that incorporates the probability of last choice in the current representative utility.The function of last probability could be additionally used as the coefficients of some part of observed component,while other alternative-specific coefficients are assumed to be variable only with their initial...
In this paper, we propose a procedure for analyzing discrete-time; nonstationary discrete-event simulation responses based on Monte Carlo integration and the use of classical ARIMA (or SARIMA) time-series models. The procedure is illustrated with an exploding single-server queue and a bounded cyclical traffic situation. Some conclusions and recommendations for further work are stated.
Characterizing user churn has become an important topic in studying P2P networks, both in theoretical analysis and system design. Recent work has shown that direct sampling of user lifetimes may lead to certain bias (arising from missed peers and round-off inconsistencies) and proposed a technique that estimates lifetimes based on sampled residuals. In this paper, however, we show that under non-stationary...
Aiming at the difficulty of dependent data analysis in data measurement field and the application limitation of traditional variance analysis for the processing of correlation data, the principle of mixed model and the corresponding design for the unequal variance data sets were discussed. The fixed effects and random effects were combined with the mixed model which realized the analysis of dependent...
Completion time estimation for workflow instances is an important basis for real time workflow management and scheduling. Current researches on this topic omitted the fact that: instances of workflow that contains OR-SPLIT are certain to bypass some activities, thus at a particular time point, estimation of completion time for workflow instances should be based merely on activities that were already...
Domain name is a new type intangible of enterprise and it is important to value it in firmpsilas management and control system. For the reason that we donpsilat recognize and measure the domain self-constructed in financial accounting system, there are little study on domainpsilas value estimation and the factors influencing its value. For the absence of value measurement, domain namepsilas valuation...
Life cycle cost is the total cost incurred in the life cycle of a product, including design, development, production, operation, maintenance, support and disposal. Life cycle cost analysis can help engineers to identify equipment and process selection not on the initial purchase cost but rather on the total cost. A reasonable life cycle cost model can lead to a reliable design. In this paper, several...
Subjective tests of telecommunication services engaging a panel of subjects aim to analyze how service users experience their quality (QoE) with varying parameters of both a network and/or application itself. Subjects express their opinion on a few-grade categorical scale during tests performed in a controlled environment. The proposed Generalized Linear Model (GLZ)1 relates probabilities of particular...
In workflow systems, time performance of workflow instances is key to business management and scheduling. Firstly, the concept of active transition was proposed and its performance equivalent model was analyzed under resources-limited circumstances. Then, the concept of active pattern was proposed and time performances of four basic active patterns were deduced. Finally, an example was given to demonstrate...
The paper discusses an analytical framework to support the analysis of the risk of non-fulfilment of committed obligations in Service Level Agreements (SLA's). On a two-state system, the downtime of a connection on a fixed observation period is modelled for Poissonian arrivals of failures and a few plausible assumptions on repair times. Both cumulative downtime and the number of failure occurrences...
With the development of economy and urbanization in China, Property Management of residence (PMR) has been playing more and more important role in people's living. Service quality of property management of residence (SQPMR) and how to evaluate it have increasingly been become the focus of social attention as well. However, in real life, people usually use qualitative method to estimate SQPMR. The...
We investigate Cox processes of random point patterns in the Euclidean plane, which are located on the edges of random geometric graphs. Such Cox processes have applications in the performance analysis and strategic planning of both wireless and wired telecommunication networks. They simultaneously allow to represent the underlying infrastructure of the network together with the locations of network...
Chant and cantillation research is particularly interesting as it explores the transition from oral to written transmission of music. The goal of this work to create Web-based computational tools that can assist the study of how diverse recitation traditions, having their origin in primarily non-notated melodies, later became codified. One of the authors is a musicologist and music theorist who has...
In the past few years researchers have started examining macro structural properties of friendship and messaging relations in online social networks. However, research efforts seemed to disregard an important question: what micro processes create that structure? In this paper two modeling methods for examining micro forces that give rise to macro network patterns in online social networks are suggested:...
This paper discusses people counting of crowd open scene according to statistics. Firstly, 16 features of texture of scene image is obtained based on grey level dependence matrix which is called feature vector, and feature matrix is construct based on those vectors. Then the most significant features are taken based on principal component analysis and the statistical model of number of people which...
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