Question: Does morphological divergence accelerate the evolution of post-zygotic reproductive isolation? Data incorporated: Estimates of divergence time between species, body size divergence, and hybrid embryo viability in the freshwater fish family Centrarchidae. Method of analysis: We estimated the age of each node in the phylogeny using penalized likelihood, calibrated with multiple fossil d...

In mobile ad hoc networks (MANETs), tasks are conducted based on the cooperation of nodes in the networks. However, since the nodes are usually constrained by limited computation resources, selfish nodes may refuse to be cooperative. Reputation system is one of the main solutions to the node non-cooperation problem. A reputation system evaluates node behaviours by reputation values and uses a r...

The performance of parallel computer systems is increasingly limited by constraints imposed by interconnects and this limitation will inevitably become more serious as capability of each processing node increases. Optics has already proved its worth in telecommunications and more recently in interconnecting computers and computer peripherals. In this paper, we propose an optical hybrid tree net...

A reliable, accurate, and affordable positioning service is highly required in wireless networks. In this paper, the novel Message Passing Hybrid Localization (MPHL) algorithm is proposed to solve the problem of cooperative distributed localization using distance and direction estimates. This hybrid approach combines two sensing modalities to reduce the uncertainty in localizing the network nod...

Design and Optimization of OpenFOAM-based CFD Applications for Modern Hybrid and Heterogeneous HPC Platforms Amani AlOnazi The progress of high performance computing platforms is dramatic, and most of the simulations carried out on these platforms result in improvements on one level, yet expose shortcomings of current CFD packages. Therefore, hardware-aware design and optimizations are crucial ...

Noc architecture performs better comparing to bus based when the number of processors is small. On the other hand bus based performs better than noc when number of the processors is large. This leads to new architecture which is hybrid bus based architecture where each node is packet switched in a mesh network of noc architecture that contains bus based system with small number of processors. F...

There is a need to explore circuit designs in new emerging technologies for their rapid commercialization to extend Moore’s law beyond 22 nm technology node. Carbon nanotube based transistor (CNFET) has significant potential to replace CMOS in the future due to its better electrostatics and higher mobility. This paper presents a complete optimal design of an inverting amplifier in CMOS, CNFET a...

A novel MapReduce computation model in hybrid computing environment called HybridMR is proposed in the paper. Using this model, high performance cluster nodes and heterogeneous desktop PCs in Internet or Intranet can be integrated to form a hybrid computing environment. In this way, the computation and storage capability of largescale desktop PCs can be fully utilized to process large-scale dat...

We present new recursive serial and parallel algorithms for QR factorization of an m by n matrix. They improve performance. The recursion leads to an automatic variable blocking, and it also replaces a Level 2 part in a standard block algorithm with Level 3 operations. However, there are significant additional costs for creating and performing the updates, which prohibit the efficient use of th...

Abstract Photonic reservoir computing has been intensively investigated to solve machine learning tasks effectively. A simple procedure of output weights is used for computing. However, the lack training input-node and inter-node connection limits performance The use multiple reservoirs can be a solution overcome this limitation In study, we investigate parallel deep configurations delay-based ...