Competitive market forces and the ever-growing load demand are two of the key issues that cause power systems to operate closer to their system stability boundaries. Open access has since introduced competition and therefore promotes inter-regional electrical power trades. However, the economic flows of electrical energy between interconnected regions are usually constrained by system physical ...

in this paper a new method is introduced and investigated for removing the destabilizing effects of time-delay parameter in control loops. the concept of the method is taken from the knowledge concerning the dynamic behaviour of irrational transfer functions (ir-tf), which is discussed and investigated elswhere in frequency response domain and is explained briefly here. ir-tfs, which are well c...

Heat Transfer has special importance in engineering applications. So, researchers have suggested different new idea to increase heat transfer and using nanofluid is one of these methods In recent years, new methods have been used. One of these methods is the use of nanofluids, ., because nanofluids have higher heat transfer potential than base conventional fluids. In this investigation effect o...

This study addresses the transfer of R&D capabilities between organizations embedded in drastically different organizational contexts. We use a network perspective to study the transfer of R&D capabilities by multinational enterprises to their international joint ventures. We first identify different networks involved in the R&D capability transfer process, taking the perspectives of the source...

Transaction Security Cost (TSC) analysis is important for managing and pricing transmission congestion in competitive electricity markets. This paper presents a novel TSC analysis method based on a “take-risk” strategy that relies on “on-line” Available Transfer Capability (ATC) and transaction impact computations, using voltage stability criteria and related tools. A sample system is used to i...

This paper presents some initial concepts on including reactive power in linear methods for computing Available Transfer Capability (ATC). It proposes a new approach that first determines the reactive power flows using the exact circle equation for the transmission line complex flow, and then determines ATC using active power distribution factors. The ideas are demonstrated on 3-bus and 7-bus s...

Primary angioplasty offers benefits as compared with fibrinolysis for many patients with acute ST-elevation myocardial infarction (STEMI).1 This superiority of percutaneous coronary intervention (PCI) in trials has led to the investigation of transfer strategies that would make PCI more widely available. Such a strategy would regionalize care and divert patients with STEMI to centers with PCI c...

the present work is an experimental study of steady state convective heat transfer of de-ionized water with a (0.04% by volume) volume fraction of al2o3 nanoparticles dispersed to form a nanofluid that flows through an aluminium tube.laminar fully developed flow heat transfer coefficient of al2o3 nanoparticles are dispersed in water in circular tube is discussed in this paper. in order to valid...