Through the examination of 11 intact interuniversity research project teams, this study examines the relationship between team leaders, team members, their communication networks (represented as structural holes), and performance. The study shows that in the conduct of their work, the team leaders bridged more structural holes than team members. Although team leaders demonstrated a higher level...

Network operators often need to adapt the configuration of a network in order to comply with changing routing policies. Evolving existing configurations, however, is a complex task as local changes can have unforeseen global effects. Not surprisingly, this often leads to mistakes that result in network downtimes. We present NetComplete, a system that assists operators in modifying existing netw...

This paper describes REWARD, a novel routing algorithm for wireless sensor networks. The algorithm is adjustable and can wage counter attacks against either single black holes or teams of malicious nodes. The proposed routing technique is suitable for network nodes that can tune their transmit power. REWARD forwards packets using geographic routing. The algorithm utilizes two types of broadcast...

Reaming is a common finishing process for improving the drilled holes surface quality. Choosing an appropriate finishing method in drilling process has a significant effect on the surface quality of holes and in decreasing the process total cost and time. In this study, four similar holes were drilled on the AISI 4340 workpiece with different two pair feed rates. The drilling process was perfor...

Wireless Ad Hoc Sensor Networks (WAdSNs) have become an important research area in the last ten years. Main contributions have focused on the development of new hardware, software, and protocols supporting distributed applications. In these kinds of networks, cooperation is a key issue, especially when nodes collaborate with their neighbors and with the whole network, considering it as a single...

We introduce the concept of the network architect to extend theory explaining how brokers create and manage structural holes in mediated markets. We argue that a broker’s social resources and dependence on the market, along with exogenous deal conditions, influence the broker’s motivations and willingness to make tradeoffs between long-term and short-term considerations when constructing deal n...

By extending wireless networks and because of their different nature, some attacks appear in these networks which did not exist in wired networks. Security is a serious challenge for actual implementation in wireless networks. Due to lack of the fixed infrastructure and also because of security holes in routing protocols in mobile ad hoc networks, these networks are not protected against attack...

the location-routing problem is a relatively new branch of logistics system. its objective is to determine a suitable location for constructing distribution warehouses and proper transportation routing from warehouse to the customer. in this study, the location-routing problem is investigated with considering fuzzy servicing time window for each customer. another important issue in this regard ...

in this article, multiple-product pvrp with pickup and delivery that is used widely in goods distribution or other service companies, especially by railways, was introduced. a mathematical formulation was provided for this problem. each product had a set of vehicles which could carry the product and pickup and delivery could simultaneously occur. to solve the problem, two meta-heuristic methods...