The transition process of industrial clusters in developing counties. A comparative study of furniture clusters in Damietta and Brianza.

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Reusable modelling and simulation of flexible manufacturing for next generation semiconductor manufacturing facilities

Automated material handling systems (AMHS) in 300 mm semiconductor manufacturing facilities may need to evolve faster than expected considering the high performance demands on these facilities. Reusable simulation models are needed to cope with the demands of this dynamic environment and to deliver answers to the industry much faster. One vision for intrabay AMHS is to link a small group of intrabay AMHS systems, within a full manufacturing facility, together using what is called a Merge/Diverge link. This promises better operational performance of the AMHS when compared to operating two dedicated AMHS systems, one for interbay transport and the other for intrabay handling. A generic tool for modelling and simulation of an intrabay AMHS (GTIA-M&S) is built, which utilises a library of different blocks representing the different components of any intrabay material handling system. GTIA-M&S provides a means for rapid building and analysis of an intrabay AMHS under different operating conditions. The ease of use of the tool means that inexpert users have the ability to generate good models. Models developed by the tool can be executed with the merge/diverge capability enabled or disabled to provide comparable solutions to production demands and to compare these two different configurations of intrabay AMHS using a single simulation model. Finally, results from simulation experiments on a model developed using the tool were very informative in that they include useful decision making data, which can now be used to further enhance and update the design and operational characteristics of the intrabay AMHS

The effect of upstream boundary layer conditions on planar wake development

This paper investigates the characteristics of the turbulent wake structure developing from the trailing edge of an elliptical leading edge flat plate using particle image velocimetry. The objective of this present research is to measure the velocity fields in the near and far wake regions of the flat plate to provide insight into the flow mechanisms responsible for the development of the coherent structures within the wake due to the characteristics of the boundary layer at the trailing edge. The effect of two different boundary layers at the trailing edge of the flat plate is investigated – one laminar and one turbulent. In the laminar boundary layer case, the boundary layer is allowed to develop from the elliptic leading edge without disturbance to the trailing edge feeding a laminar boundary layer into the wake. In the turbulent boundary layer case, exactly the same free-stream velocity as the laminar case is used, but the boundary layer is tripped at the leading edge such that a turbulent boundary layer at the trailing edge feeds into the wake

Inverted Beta Lindley Distribution

In this paper, a three-parameter continuous distribution, namely, Inverted Beta-Lindley (IBL) distribution is proposed and studied. The new model turns out to be quite flexible for analyzing positive data and has various shapes of density and hazard rate functions. Several statistical properties associated with this distribution are derived. Moreover, point estimation via method of moments and maximum likelihood method are studied and the observed information matrix is derived. An application of the new model to real data shows that it can give consistently a better fit than other important lifetime models

Synthesis of New Complexes by Using Pyridine Acetohydrazone Derivatives

A new ligand L1=[N-(1-pyridine-2-yl)Ethlidene AcitoHydrazide]; was synthesized by condensation of acetohydrazide with Acitil pyridine. Then the complexes were synthesized by reacting the transition metals (Co2+,Cr3+ , Fe2+) with the ligand [ with a metal to ligand ratio of (1:2) respectively]  and this led to forming the following complexes : [Co(L1)2] Cl2 , [Cd(L1)Cl], [Fe(L2)SO4] .The ligands and complexes were characterized and studied on the basis of FT-IR, and U.V.–visible and the results were compatible with the proposed structures Keywords: ligand, metal complexes, pyridine

Patient-centered medical homes for patients with severe mental illness: utilization and quality of care variation in rural and urban areas

In rural areas, people with severe mental illness (SMI) often have more difficulties accessing mental health services. As a result, the responsibility for addressing both physical and mental needs is likely to fall to the primary care provider. The patient-centered medical home (PCMH) has been proposed as a model for prevention, care coordination, and management of chronic disease. There is a growing body of literature on adults in the PCMH. However, there is very little on people with SMI in the PCMH and the performance of the model in rural versus urban areas remains unknown. The objective of this dissertation was to examine the performance of the PCMH for Medicaid beneficiaries with SMI living in urban and rural areas based on a set of health services utilization and quality of care outcomes. First, it examined if there were differences for Medicaid patients with SMI between urban, non-metropolitan urban and rural PCMHs. Next, it focused on the impact of the PCMH in rural areas by examining primary care provider experience with SMI and, then, the interaction between the mental health workforce supply with primary care provider experience with SMI. North Carolina Medicaid administrative paid claims data from 2004-2007 was used to analyze the outcomes in this dissertation. There were differences between urban, non-metropolitan urban, and rural PCMHs for some, but not all outcomes among people with SMI and there was some variation by SMI diagnoses. Within rural PCMHs, the impact of experience with SMI showed higher primary care and specialty mental health use, but also emergency department use. There was no impact of the interaction between primary care experience with SMI and mental health workforce shortages across all of the outcomes studied. Findings from this dissertation suggests that rural and non-metropolitan urban PCMHs may benefit from targeted resources to help close the remaining gaps in health services utilization and medication adherence for people with SMI. Several areas for future research exist that can advance our understanding of effective coordinated care models in order to inform future policy decisions regarding programs aimed at improving care for people in rural areas with SMI.Doctor of Philosoph

Power Rayleigh Distribution for Fitting Total Deaths of Covid-19 in Egypt

The Rayleigh distribution incorporate the lifetime of an object or a service time. In this paper, a new model, called, Power Rayleigh distribution (PR) is submitted for specifying the confirmed total deaths of Corona virus (Covid-19) in Egypt. Statistical and reliability properties of the PR distribution such as survival function, failure rate function, mean residual life, order statistic and extreme value distribution are deduced and studied. Maximum likelihood method is used to evaluate the unknown parameters. Simulation Schemes are introduced. Finally, two sets of real-life data are construed and observed that the new model can provide a best fit to water runoff data and the total deaths of Covid-19 data than other well-known distributions

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