The space transportation systems required to support NASA’s Exploration Initiative will demand a high degree of reliability to ensure mission success. This reliability can be realized through autonomous fault/damage detection and repair capabilities. It is crucial that such capabilities are incorporated into these systems since it will be impractical to rely upon Extra-Vehicular Activity (EVA),...

Non-destructive testing using ultrasonic measurement is used to ensure the quality of the die-casting products. The quality of a casting depends on the presence of discontinuities such as porosity and on the final metallurgical structure. Discontinuities occurring in the sub-surface of the cast structure mostly have irregular surfaces which scatter the ultrasound waves and make ultrasonic testi...

Composite materials are widely used in a number of industrial sectors from aviation, space, to boat building, automotive, and sports goods. In recent years composite structures have seen a substantial increase of their use in the new generation of airplanes. The nondestructive testing and inspection of composite structures, both for manufacturing quality assurance and for in-service damage dete...

This paper introduces a Weibull hazard model formulated by the aggregated Markov method to forecast the expected life length of highway facilities and equipments and the inspection/replacement processes of tunnel lighting systems. First, the paper focuses on presenting a methodology to overcome the estimation bias issues caused by the incompleteness of the data set due to the lack of full life ...

Software inspections, which were originally developed by Michael Fagan in 1976, are an important means to verify and achieve sufficient quality in many software projects today. Since Fagan’s initial work, the importance of software inspections has been long recognized by software developers and many organizations. Various proposals have been made by researchers in the hope of improving Fagan’s ...

background: the hygienic issues are the essential criteria in the primary site selection, compatibility and maintain of passengers health after use of the services. qom with 17 million annual tourists is the second religious tourism center in iran. the aim of this study was to investigate the impact of the public residential centers internal managers’ educational status on their environmental h...

in this paper, absorbing markov chain models are developed to determine the optimum process mean levels for both a single-stage and a serial two-stage production system in which items are inspected for conformity with their specification limits. when the value of the quality characteristic of an item falls below a lower limit, the item is scrapped. if it falls above an upper limit, the item is ...

This document is disseminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof. The effects of sensor accuracy; data rate, and message delivery de?ay upon automated conflict detection,and resolution processing is analyzed and particular " considerationsfor 0A8S/IPC...

Darek Isaacs responds to the challenges to his paper, “Is there a dominion mandate?” This discussion explores the differences between blessings and commandments in light of how their distinctions would impact the understanding of the so-called dominion mandate. This discussion explores the nature of reproduction and how the outcome of reproduction is a result of the blessing of the womb, and no...

This final report summarises the work undertaken within the project entitled, ‘The formation and occurrence of haloacetic acids in drinking water’, funded by the EPSRC (EP/D502411/1), the Drinking Water Inspectorate and Anglian Water, during the period of October 2005 to March 2009. The project was also supported by Severn Trent Water, United Utilities and Scottish Water, who provided advice an...