Performance prediction of checkpointing systems in the presence of failures is a well-studied research area. This paper makes three small contributions to this research area. First, we show how to apply the concept of availability from reliability theory as a useful metric for checkpointing systems. Second, we study the average availability of uniprocessor checkpointing systems, using the libck...

We present some preliminary results on a system for tracking 3D motion using input from a calibrated stero pair of video camreas, and on a new stereo camera calibration technique. The system is organized as a collection of intercommu-nicating \agents", which can run concurrently, using a cycle of prediction and veriication of 3D motion. This system architecture is designed for real time operati...

The African contribution to the global climate-carbon cycle feedback of the 21st century P. Friedlingstein, P. Cadule, S. L. Piao, P. Ciais, and S. Sitch IPSL/LSCE, UMR 1572 CEA-CNRS-UVSQ, L’Orme des Merisiers, 91191 Gif-sur-Yvette, France IPSL, 4 place Jussieu, 75252 Paris, France Department of Ecology, Peking University, Beijing 100871, China Met Office, Hadley Centre for Climate Prediction a...

This paper reports the results of an experimental investigation on the effect of the EGR on the pollutants emission, especially on oxides of nitrogen, from the exhaust gases and performance of the spark ignition engine. Also along with experimental work, a mathematical model for the determination of the effect of EGR on the peak cycle temperature and for the prediction of its effect on the NOx ...

The Artificial Neural Network (ANN) is a computer technique that uses mathematical model to represent simpler form of the biologic neural structure. It formed by many processing units and its intelligent behavior comes from iterations between these units. One application ANN for time series prediction algorithms, where network learns dependent data it able predict future values. In this work, a...

In this paper we consider a single machine system that produces items part of which are defective. The defective items produced in a time period, consisting of several equal cycles, are accumulated and are all reworked in the last cycle of this period called the rework cycle. At the end of the rework cycle the whole process will start all over again. The first significant objective of this stud...

Software-development and testing is a complex activity that often shows signs of contradicting instinctive activities, in that outcomes can vary drastically with deliberate consequences. Software-development and testing has many complexities, including dynamic behavior and feedback mechanisms, as well as various interacting factors. System dynamics is a modeling methodology that is well suited ...

The increased dependence of clock cycle time on interconnect delay favors chip multiprocessors (CMP) as the basis for future microprocessor designs. The tight coupling of processing units in a CMP allows new forms of parallelism to be exploited. This paper studies multiple-path execution (MPE) on a CMP design to provide speedup on unmodified sequential code by exploring different paths of a con...