A power law degree distribution is established for a graph evolution model based on the graph class of k-trees. This k-tree-based graph process can be viewed as an idealized model that captures some characteristics of the preferential attachment and copying mechanisms that existing evolving graph processes fail to model due to technical obstacles. The result also serves as a further cautionary ...

The main purpose of this paper is to provide an understanding, within the field of corporate entrepreneurship, of the various factors that enable technology entrepreneurship in established firms and its principal effects on customers and society. The paper reports on a case study regarding technology entrepreneurship in a Spanish company whose activity is pharmaceutical distribution. This compa...

Faced with the rapid change of business environment and technology, IT outsourcing has become an important alternative for IT management. IT outsourcing provides IT organization adaptability and sustainable competitive advantages. Despite the fact that many firms have tried to adopt IT outsourcing, comprehensive case studies on IT outsourcing process have so far rarely been reported. Therefore,...

In a business network, a company may be encouraged to utilise a new technique when either its cooperators or its competitors have made their adoption. Nevertheless, its willingness can be reduced as more of its competitors start applying the new technique. Inspired by the this scenario, in this thesis we proposed a viral spreading model in signed networks, in which each link is allocated with a...

the purpose of this study is to investigate the effect of information technology and knowledge management on the supply chain agility in alborz darou and alborz distribution company. the statistical population of this study includes employees of alborz darou and alborz distribution company. the population consists of 426 members. a sample of 205 employees was selected through random stratified ...

Distribution of distributed generation resources in distribution systems has several advantages, including reducing losses, improving voltage profiles, reducing pollution, and increasing system reliability. However, one of the most important points regarding the placement of these resources in distribution networks is economic issues and the return on investment and the increase in profits from...

Electricity distribution networks are subject to random faults. On occurrence of a fault in the distribution network, the circuit breaker on the faulty feeder trips, which disconnects supply to all customers connected to that feeder. Once the fault is located, the faulty component is isolated and then repaired. The cost of isolating and repairing faults depends on the way the network is configu...

Accurate definitions of related concepts are prerequisite for further understanding of evolving network. To be an important concept, steady state degree distribution has been widely used. However, as we find out, all current definitions have a common default from mathematics point of view. In this paper, we first point out the shortcoming of current definitions through a special type of evolvin...

The service architecture of the Internet becomes more and more complex as it expands as a medium for large-scale distribution of diverse content. The dynamic growth of various content distribution systems deployed by influential Internet companies, content distributors, aggregators and owners, has substantial impact on the distribution of network traffic and the scalability of various Internet ...

This paper used different copula-based GARCH models (Copula-GARCH model and Copula-GJR-GARCH model) to analyze the dependence structure among gold price, stock price index of gold mining companies and Shanghai Composite Index in China. The empirical results found that the suitable margins were skew-t distribution, and the GJR-GARCH marginal distribution had better explanatory ability than the G...