The present study considered the situation of kilka stocks in last decades by using overfished biomass threshold, fishing effort ratio and fishing mortality proxy during 1991-2010. The CPUE index of anchovy and mixed-species of kilka indicated an undepleted from 1991 to 2000. In 2000, the CPUE ratio declined to close to the “in danger” region, and subsequently collapsed to “overfished” region f...

BACKGROUND To compare the predictive validity of the demand/control and reward/imbalance models, alone and in combination with each other, for self-reported health status and the self-reported presence of any chronic disease condition. METHODS Self-reports for psychosocial work conditions were obtained in a sample of sawmill workers using the demand/control and effort/reward imbalance models....

In wireless networks, bandwidth is scare resource and it is essential to utilize it effectively. This paper analyses effects of using different bandwidth management techniques on the network performances of the Wireless Local Area Networks (WLANs) that use hybrid load balancing scheme. In particular, we study three bandwidth management schemes, namely Complete Sharing (CS), Complete Partitionin...

In this paper, we develop algorithms for decentralized traffic engineering when several classes of services are to be provided. More precisely, given an utility function of a very general form, we provide a large class of distributed control laws which converge to the maximum of the utility function subject to the network constraints and service requirements. Each ingress node adapts its sendin...

The IP-based broadband aeronautical satellite network will provide numerous new applications and services for both airspace system operations and passenger communications. Application of commercial off the shelf technologies and techniques has the potential to make network operations economically and technically realizable. However the performance of data communication protocols and application...

The IEEE is working on a MAC standard (802.11p) for VANET based on 802.11e. Although the access function of 802.11e supports QoS by using different counters for different QoS requirements, it reduces to a best effort service and low performance when the number of nodes increases. Some applications of VANET, particularly safety related, have strict QoS requirements that cannot be guaranteed by 8...

Abstract—The introduction of service differentiation in the Internet implies that the residual bandwidth available to best-effort traffic becomes highly variable. We explore the design of a rapidly-reactive congestion control framework, where the ECN-aware best-effort flows aggressively go after any unused capacity. By making routers mark packets in a much more aggressive manner, we are able to...

Online bandwidth limitations and fluctuations impose a major challenge in estimating the amount of data to transmit in a given time period. Over or under estimation of bandwidth can jeopardize the visual fidelity of the transmitted data and related multimedia data. We propose a Visual Quality Prediction (VQP) model which supports an adaptive fragmented texture transmission approach taking bandw...