IEEE is currently conducting an effort to standardize a full duplex, spatial reuse, ring network architecture, called the Resilient Packet Ring (IEEE P802.17). We discuss use of backpressure flow-control for congested stations to communicate their congestion state to their upstream stations and the use of fairness algorithms to ensure fair allocation of network resources between stations on suc...

BACKGROUND AND AIMS Dioecious plants often show sex-specific differences in growth and biomass allocation. These differences have been explained as a consequence of the different reproductive functions performed by the sexes. Empirical evidence strongly supports a greater reproductive investment in females. Sex differences in allocation may determine the performance of each sex in different hab...

O ne of the challenges of engineering is to make the best possible use of the available resources, or in other words allocating the resources in such a way as to maximize the overall profit. In the context of networks on chip the resources are represented by the communication bandwidth and the final profit is the performance of an application supported by the network on chip. In this thesis we ...

Dynamic channel resource allocation (DCA) exploiting wideband multiuser diversity can provide data transmission with very high spectral efficiency by scheduling at each dimension (time, frequency, space) the user with the best channel conditions. The main issue arising from this allocation is fairness. Base station or users have to wait until their channel is most favorable to transmit. It is c...

Examination of the effects of fishing on marine ecosystems requires historical catch data on appropriate spatial scales. Most commercial fishing data are only currently available in the form of landings data that do not delineate the marine area from which the catch was extracted. Even when statistics are available by defined spatial areas such as the statistical areas used by the Food and Agri...

This paper proposes an acoustic echo cancellation structure for hands-free synthetic surround sound applications, such as multiple participant conferencing, and virtual reality applications. Voice over Internet protocol (VoIP) and other virtual reality applications can benefit from the addition of 3D spatial audio generated by more than two loudspeakers. When full-duplex audio is present in a s...

the effects of planting date and single irrigation (si) allocation scenarios on increasing and stability of yield were investigated to determine the total water productivity and economical water productivity (wpe), for rainfed wheat at dryland agricultural research institute in maragheh, iran, during 2000-2004. the treatments included three sowing dates (early, normal and late), four allocation...

using the treynor and mazoy model (expanded by fama to evaluate management performance for asset allocation among investment units), this paper examines the management’s performance in funds and investment companies in tehran stock exchange during 2004-2010. the results do not support the application of management market timing during the study period and managers were only able to create addit...

In this paper, a low complexity subcarrier allocation scheme is proposed for multiuser MIMO-multiuser OFDM systems with zero-forcing beamforming (ZFBF) to minimize the total transmit power satisfying given target data rates of users. The ZFBF for multiuser MIMO makes multiple spatial channels by removing multiuser interference and the subcarrier allocation can be performed over spatial and freq...

Resource management is a key area in the drive to fully realize the performance potential of parallel and distributed systems. For the task of assigning a set of processors of a massively parallel processing (MPP) system to a given job, various processor allocation strategies have been proposed in the research community and are in use at supercomputing sites. With the advent of the class of non...