scholarly journals A NEW METHOD OF APPROXIMATION FOR COMPUTING SYSTEM-FAILURE FREQUENCY

2016 ◽  
Vol 59 (3) ◽  
pp. 258-268 ◽  
Author(s):  
Masahiro Hayashi ◽  
Hisao Yamamoto
Keyword(s):  
Computing System ◽  
New Method ◽  
System Failure ◽  
Failure Frequency

A new method for dynamically estimating long-term seepage failure frequency for high concrete faced rockfill dams

2020 ◽  
Vol 79 (10) ◽  
Author(s):  
Gang Deng ◽  
Kui Cao ◽  
Rui Chen ◽  
Yanfeng Wen ◽  
Yinqi Zhang ◽  
...  
Keyword(s):  
New Method ◽  
Seepage Failure ◽  
Failure Frequency

Measuring Digital System Latency from Sensing to Actuation at Continuous 1-ms Resolution

2013 ◽  
Vol 22 (1) ◽  
pp. 20-35 ◽  
Author(s):  
Weixin Wu ◽  
Yujie Dong ◽  
Adam Hoover
Keyword(s):  
Virtual Reality ◽  
Computing System ◽  
Digital System ◽  
New Method ◽  
Simulator Sickness ◽  
Discrete Events ◽  
Cyclical Variation ◽  
Sensor Error ◽  
Two Systems ◽  
Orientation Sensor

This paper describes a new method for measuring the end-to-end latency between sensing and actuation in a digital computing system. Compared to previous works, which generally measured the latency at 10–33-ms intervals or at discrete events separated by hundreds of ms, our new method measures the latency continuously at 1-ms resolution. This allows for the observation of variations in latency over sub 1-s periods, instead of relying upon averages of measurements. We have applied our method to two systems, the first using a camera for sensing and an LCD monitor for actuation, and the second using an orientation sensor for sensing and a motor for actuation. Our results show two interesting findings. First, a cyclical variation in latency can be seen based upon the relative rates of the sensor and actuator clocks and buffer times; for the components we tested, the variation was in the range of 15–50 Hz with a magnitude of 10–20 ms. Second, orientation sensor error can look like a variation in latency; for the sensor we tested, the variation was in the range of 0.5–1.0 Hz with a magnitude of 20–100 ms. Both of these findings have implications for robotics and virtual reality systems. In particular, it is possible that the variation in apparent latency caused by orientation sensor error may have some relation to simulator sickness.

scholarly journals A new method for computing the reliability of consecutive k-out-of-n:F systems

Open Physics ◽  
2016 ◽  
Vol 14 (1) ◽  
pp. 166-170 ◽  
Author(s):  
Gökhan Gökdere ◽  
Mehmet Gürcan ◽  
Muhammet Burak Kılıç
Keyword(s):  
Integrated Circuits ◽  
Reliability Evaluation ◽  
New Method ◽  
System Failure ◽  
Ring Networks ◽  
Physical Systems ◽  
Oil Pipeline ◽  
R Project ◽  
Vacuum Systems ◽  
Relay Stations

AbstractIn many physical systems, reliability evaluation, such as ones encountered in telecommunications, the design of integrated circuits, microwave relay stations, oil pipeline systems, vacuum systems in accelerators, computer ring networks, and spacecraft relay stations, have had applied consecutivek-out-of-nsystem models. These systems are characterized as logical connections among the components of the systems placed in lines or circles. In literature, a great deal of attention has been paid to the study of the reliability evaluation of consecutivek-out-of-nsystems. In this paper, we propose a new method to compute the reliability of consecutivek-out-of-n:F systems, withnlinearly and circularly arranged components. The proposed method provides a simple way for determining the system failure probability. Also, we write R-Project codes based on our proposed method to compute the reliability of the linear and circular systems which have a great number of components.

A MARKOV REPAIRABLE SYSTEM INVOLVING AN IMPERFECT SERVICE STATION WITH MULTIPLE VACATIONS

2005 ◽  
Vol 22 (04) ◽  
pp. 555-582 ◽  
Author(s):  
JAU-CHUAN KE ◽  
CHUEN-HORNG LIN
Keyword(s):  
Repairable System ◽  
System Failure ◽  
Service Station ◽  
System Parameters ◽  
Failure Frequency ◽  
The Mean ◽  
Repair Facility ◽  
Markov Repairable System ◽  
Mean Time ◽  
Reliability And Availability

The main purpose of this paper is to study the reliability and availability of a system with M operating devices, m spares, and an imperfect service station that takes vacations. Specifically, once there are no failed devices in the system, the service station takes consecutive vacations until there is at least one failed device upon its return from vacation. The service station may break down and require repair at a repair facility. This paper derives the reliability, the mean time to system failure, the availability, and failure frequency of the K-out-of-M + m system. Numerical simulation of the impacts of system parameters as well as sensitivity analysis for the reliability, the mean time to system failure, the availability and failure frequency is performed.

Research on Dependable Architecture of Saas Based Platform Supporting the Industry Chain Coordination

2011 ◽  
Vol 216 ◽  
pp. 568-573
Author(s):  
Wei Zhi Liao ◽  
Lin Fu Sun ◽  
Xiao Ming Zhou
Keyword(s):  
Computing System ◽  
Software As A Service ◽  
Fault System ◽  
System Failure ◽  
Data Loss ◽  
System Error ◽  
Industry Chain ◽  
Error System ◽  
Good Support

The demand of dependability of SaaS(Software as a service) based platform supporting the industry chain coordination (in brief, PLATFORM) is analyzed, the characteristics of virtualization technique in the respect of enhancing the dependability of computing system are researched ,then the virtualization technique based dependable Architecture of PLATFORM is designed and the process of enhancing dependability of PLATFORM is discussed in the paper. The dependable Architecture of PLATFORM proposed in the paper can well satisfied dependable characteristic includes Reliability, availability, maintainability and security etc, and system crashes, system halt and data loss by reason of system fault , system error, system failure can be effectively prevented which can provide good support for SaaS based system applications.

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