– in this paper we consider some (α ,β ) -metrics such as generalized kropina, matsumoto and f (α β )2α = + metrics, and obtain necessary and sufficient conditions for them to be einstein metrics when βis a constant killing form. then we prove with this assumption that the mentioned einstein metrics must beriemannian or ricci flat.

user-generated medical messages on internet contain extensive information related to adverse drug reactions (adrs) and are known as valuable resources for post-marketing drug surveillance. the aim of this study was to find an effective method to identify messages related to adrs automatically from online user reviews.we conducted experiments on online user reviews using different feature set an...

In this paper we propose a scalable QoS-based inter-domain routing scheme for distributed multimedia applications in a high speed wide area network. The problem of QoS-based routing is formulated as a multicriteria shortest path problem, known as NP-complete 20,29]. Our scheme consists of two phases. In Phase 1, we present a way of mapping the network into a graph that contains a part of the ne...

enhanced neuropathic pain following intraspinaly injection of schwann cells in contusion model of spinal cord injury     pourheydar b [1] *, joghataei mt [2] , najafzadeh n [3]     received: 6 nov , 2011 accepted: 20 jan , 2012     abstract   background & aims : spinal cord injury (sci) leads to sensorimotor deficits and neuropathic pain (np). cell therapy is a common method for treatment of sc...

Design, simulation and optimal selection of cosine-linear frequency modulation waveform (CNLFM) based on correlated ambiguity function (AF) method for the purpose of Synthetic Aperture Radar (SAR) is done in this article. The selected optimum CNLFM waveform in contribution with other waveforms are applied directly into a SAR image formation algorithm (IFA) and their quality effects performance ...

Influenza viruses have acquired resistance to approved neuraminidase-targeting drugs, increasing the need for new drug targets for the development of novel anti-influenza drugs. Nucleoprotein (NP) is an attractive target since it has an indispensable role in virus replication and its amino acid sequence is well conserved. In this study, we aimed to identify new inhibitors of the NP using a stru...

Protocols for clustering and routing in the Internet of Things ecosystem should consider minimizing power consumption. Existing approaches to cluster-based issues environment often face challenge uneven This study created a method utilising swarm intelligence obtain more even distribution cluster heads. In this work, firefly optimization an aquila optimizer algorithm are devised select intermed...

We implement a novel recommender system (RS) metaheuristic framework within nonlinear NP-hard decision-making problem, for reducing the solution search space before high-burden computational steps are performed. Our RS-based supports consideration of comprehensive evaluation criteria, including estimations potential set’s optimality, diversity, and feedback/preference end-user, while also being...