The need of realistic models to evaluate the availability of multi-state, multi-output plants is felt in many advanced industries such as the nuclear, aerospace, oil and chemical ones. Indeed, often the complexity of the plant and of its maintenance and recon guration policies is such to render unfeasible its reliability/availibility evaluation by analytical models. In this paper we consider th...

Microsoft Windows NT deployment and maintenance is one of the most time consuming tasks for systems administrators. The primary motivation for the JACAL project is to streamline this process by creating a set of free and open tools and guidelines for automating the installation and maintenance of one or more operating systems in large computing environments. 1 It is well known that Windows NT w...

Kaua‘i Community College (Kaua‘i CC) is presently participating in an effort to develop a space industry in Hawai‘i. This effort includes future launches of University of Hawai‘i supported micro-class satellites from the Pacific Missile Range Facility at Barking Sands, Kaua‘i. Kaua‘i CC’s participation is represented by operation and maintenance of a ground station, located on campus, to suppor...

The need of realistic models to evaluate the availability of multi-state, multi-output plants is felt in many advanced industries such as the nuclear, aerospace, oil and chemical ones. Indeed, often the complexity of the plant and of its maintenance and recon guration policies is such to render unfeasible its reliability/availibility evaluation by analytical models. In this paper we consider th...

Many systems used by the CERN accelerators and the technical infrastructure have to respect stringent requirements in terms of reliability, safety, availability and maintainability either for operation, security, or legal aspects such as the one required by French Regulatory Authority: the INB (Installations Nucléaires de Base ). The functional safety approach provides a structured method for a...

Not every ventilation system performs as intended; much can be learned when they do not. The purpose of this study was to compare observed initial performance to expected levels for three saw-reconditioning shop ventilation systems and to characterize the changes in performance of the systems over a one-year period. These three local exhaust ventilation systems were intended to control worker e...

Ethernet is being applied to the Local Area Network field due to its low cost, and easy installation and operation. Because IP centric communication has been adopted widely, a recent trend is the application of Ethernet to Wide Area Networks to form the transport networks needed for IP communication. For example, recent optical access networks for FTTH and leased line networks for business user...

The CMS tracker optical readout links must fulfill demanding requirements such as radiation hardness, high reliability, small size, low power dissipation and low cost while maintaining a high analogue transmission quality during the experiment lifetime. The concept adopted for the CMS tracker is based on edge emitting InGaAsP semiconductor lasers coupled to pure silica core single mode fibre at...