Pore gas has a significant influence on rock strength. This study performed triaxial compression tests of gas-infiltrated sandy shale samples to investigate the strength characteristics under gas pressures of 0 and 2 MPa. The effective stress coefficient was evaluated while considering the gas and solid coupling effect, and was found to decrease with increasing confining pressure. The calculate...

Physical-layer security for wireless networks has become an effective approach and recently drawn significant attention in the literature. In particular, the deployment and allocation of resources such as relays to assist the transmission have gained significant interest due to their ability to improve the secrecy rate of wireless networks. In this work, we examine relay selection criteria with...

The ongoing violence, accidents, and increased number of school leavers because of the current situation in Syria have increased the number of cases with traumatic dental injuries (TDI) with no or limited data estimating the exact prevalence of the problem. Delivering immediate and appropriate care might be a challenge for clinicians, and providing the best possible prognosis for the traumatize...

In cycle of attraction and keeping the customers, fulfilling the customer satisfaction via identifying of their needs is very important. So, identifying the amount of customer satisfaction and informed of the field of strength and weakness in this regard, helps manager programming in line with customers better maintenance. The objective of this study is determination and priority of effecting c...

Drought is a wide-spread problem seriously influencing durum wheat (Triticum durum Desf.) production and quality, but development of resistant cultivars is hampered by the lack of effective selection criteria. The objective of this study was to evaluate the ability of several selection indices to identify drought resistance cultivars under a variety of environmental conditions. Twenty four duru...

A new sequential thinning algorithm, which uses both flag map and bitmap simultaneously to decide if a boundary pixel can be deleted, as well as the incorporation of smoothing templates to smooth the final skeleton, is proposed in this paper. Three performance measurements are proposed for an objective evaluation of this novel algorithm against a set of well established techniques. Extensive re...

We compare two alternative approaches for evaluating the potential of a work group or team: one that focuses on team members’ demographic characteristics and one that focuses on the members’ social networks. Given that people’s network contacts often share their demographic attributes (i.e., the network is homophilous), the two approaches seem equivalent, and the first seems preferable because ...

water is a valuable and irreplaceable element for the socio-economic development of countries. it is also the most important factor for the equilibrium of the ecosystem and environment. todays, several factors cause water problems and related issues around the world. governments and nations are always looking for the correct understanding of water issues and providing sustainable solutions to s...

in the science of operation research and decision theory, selection is the most important process. selection is a process that studies multiple qualitative and quantitative criteria, related to the science of management, which are mostly incompatible with each other. the multi criteria selection of a renewable energy portfolio is one of the main issues considered in multi criteria literature. i...