Multipactor breakdown analysis is presented in cylindrical dielectric resonator waveguide filter under its dual-mode behavior. The method of effective electron algorithm with combination of Monte-Carlo method is used to perform the simulation and predict multipactor breakdown thresholds. The breakdown thresholds of the proposed structure are presented for different values of frequency-gap produ...

In the real world, risk and uncertainty are two natural properties in the implementation of Mega projects. Most projects fail to achieve the pre-determined objectives due to uncertainty. A linear integer programming optimization model was used in this work to solve a problem in order to choose the most appropriate risk responses for the project risks. A mathematical model, in which work structu...

uncertainties in industrial environments can cause considerable complexities, during the implementation and management of projects. so, performing a risk management model in such environments has become inevitable. in such circumstances, many risk management models have been introduced in literature, which majorities of them are general, while some of them are developed to be applied to specifi...

each year many large scale national projects face execution problems. in this regard, riskmanagement can play a significant role in identifying and taking proper measures. in this research,using project management body of knowledge (pmbok), a risk management procedure has beendesigned and implemented in transmission and high distribution power lines of khorasan regionalelectric company. first, ...

With rising trading volumes in securities transactions and increasing risks faced by global financial firms and markets, STP (Straight Through Processing) is internationally recognized by the securities industry, which is to manage securities trades throughout the trade lifecycle automatically and without human intervention. However, while attempting to achieve STP, care must be taken to ensure...

A gravitational scenario is proposed where the euclidean action is invariant under the isotropic and homogeneous version of the euclidean U(1) group of local transformations of the scale factor and scalar matter field, interpreting the trace of the second fundamental form as the gauge field. The model allows spontaneous breakdown of some involved symmetries, including possibly diffeomorphism in...

Power diode with multi-layer compound passivation and dual-P typed diffusion are studied manufactured. Combine multiple advantages, a power reverse breakdown voltage higher than 2200V, static on-resistance 1.11Ω leakage current of 8.3mA can be obtained on silicon drift layer thickness 280um resistivity 60Ωcm. Simulation shows multilayer polysilicon contact effectively change the edge carrier di...

For the construction environment of large bridges is complex and there are too much uncertain factors during the course of the construction, it is difficult for the general method of risk identification to identify the risks wholly and systematically. This study presents a new method of risk identification with modular analysis based on WBS-RBS (Work Breakdown Structure-Risk Breakdown Structure...