Machine condition monitoring and fault diagnosis fields are charged with developing new technologies to detect and diagnose the machinery problems. In fact, several methods of fault diagnostics have been developed and applied effectively to identify the machine faults at an early stage using different quantities (Measures or Readings) such as current, voltage, speed, temperature, and vibrations...

There is recently an interest in test generation for reversible circuits, but nothing has been published about fault localization in such circuits. This paper deals with fault localization for binary reversible (permutative) circuits. We concentrate on functional test based fault localization, to detect and locate “stuck-at” faults in a reversible circuit by creating an adaptive tree. A strikin...

Erasure codes are the means by which storage systems are typically made reliable. Recent high profile studies of disk failure and sector failures indicate that ever more fault tolerant erasure codes are needed. Many traditional RAID approaches, parity-check array codes (e.g.,EVENODD, RDP, and X-code), and MDS codes offer two and three disk fault tolerant schemes. There are also many novel erasu...

A gravity and geologic survey was carried out over a port ion of the Nelson ultramafic belt of the South Island . In this region, the ultramafic rocks outcrop over a 5-mile-wide belt and abut against the Alpine greywacke along the right lateral transcurrent Alpine Fault. The dunite and peridotite of the ultram afic belt as well as the overlying geosynclinal sediments strike north . At their sou...

Films of (10 10) textured CoCrPt have been sputtered on polymer substrates for use as thin film tape media. Underlayers of NiAl combined with various intermediate layers were employed to obtain this orientation without thermal damage to the polymer. It was found that NiAl underlayers sputtered on tape substrates have a (112) growth texture, like they do on glass. Film coercivity varied as a fun...

groundwater resource is a very important water resource that has stable temperature, clear, tidy and confident. in recent years, population growth, industrialize and need to food and water, have exposed the groundwater resource on the risk. reduction of water resources is a main problem in throughout the world. in this research groundwater potential mapping was obtained in norabad plain, lorest...

This paper presents a new fault diagnosis technology for event-driven controlled systems such as Programmable Logic Control (PLC). The controlled plant is modeled by means of the Timed Markov Model, which regards the time interval between successive two events as a random variable. In order to estimate the probability density functions of the randomized time intervals, the maximum entropy princ...

As the cost of software application failures grows and as these failures increasingly impact business performance, software reliability will become progressively more important. Employing effective software reliability engineering techniques to improve product and process reliability would be the industry’s best interests as well as major challenges. As software complexity and software quality ...

Accurate and reliable control of planetary entry is a major challenge for planetary exploration vehicles. For Mars entry, uncertainties in atmospheric properties such as winds aloft and density pose a major problem for meeting precision landing requirements. Anticipated manned missions to Mars will also require levels of safety and fault tolerance not required during earlier robotic missions. T...

[1] The absolute value of stress on a fault during slip is a critical unknown quantity in earthquake physics. One of the reasons for the uncertainty is a lack of geological constraints in real faults. Here we calculate the slip rate and stress on an ancient fault in a new way based on rocks preserved in an unusual exposure. The study area consists of a fault core on Kodiak Island that has a ser...