Now showing items 41-50 of 429
Modeling and identification of the combustion pressure process in internal combustion engines
(Elsevier, 1994-01)
We present a new model relating cylinder combustion pressure to crankshaft angular velocity in an internal combustion engine. There are three aspects to this model. First, by changing the independent variable from time to ...
Biased Replacement Policies for Web Caches: Differential Quality-of-Service and Aggregate User Value
(1999)
Disk space in shared Web caches can be diverted to serve some system users at the expense of others. Cache hits reduce server loads, and if servers desire load reduction to different degrees, a replacement policy which ...
Nonmonotonic consequences in default domain theory
(Kluwer Academic Publishers; Springer Science+Business Media, 1997-03)
Default domain theory is a framework for representing and reasoning about commonsense knowledge. Although this theory is motivated by ideas in Reiter’s work on default logic, it is in some sense a dual framework. We make ...
The ultrahigh-peak-power laser: present and future
(Springer-Verlag, 1997-08)
to 10 20 -W/cm 2 range. With some refinements and with superior energy storage materials, even higher peak power in the petawatt range should be possible from tabletop systems. In this paper we show the ultimate achievable ...
Scan Time Optimization for Post-injection PET Scans
(IEEE, 1998-11-08)
Previous methods for optimizing the scan times for PET transmission and emission scans under a total scan time constraint were based on linear non-statistical methods and used noise equivalent counts (NEC) criteria. The ...
Workload Characterization of AFS File Servers
(Center for Information Technology Integration, 1992-11-23)
This paper describes the workload characterization of AFS file servers, based on traces collected by the file servers at CITI over a 2-4 week period. These workload characteristics have been used to compare the performance ...
Amplification of 1 ps pulses at 1.053 [mu]m in a Ti:Al2O3 regenerative amplifier
(Elsevier, 1991-07-01)
We demonstrate the operation of a Ti:Al2O3 regenerative amplifier tunable around 1 [mu]m. Gains up to 108 at 1.053 [mu]m without any spectral narrowing are obtained. This amplifier is designed for use in terawatt picosecond ...
Aiming control: Residence probability and (D, T)-stability,
(Elsevier, 1992-05)
In this paper, the problem of aiming control is formulated and analyzed in terms of the residence probability measure. Specifically, the notion of residence probability in a domain is introduced and its asymptotic expression ...
Recursive computation of limited lookahead supervisory controls for discrete event systems
(Kluwer Academic Publishers; Springer Science+Business Media, 1993-03)
We continue the study of limited lookahead policies in supervisory control of discrete event systems undertaken in a previous paper. On-line control of discrete event systems using limited lookahead policies requires, after ...
Uniform Quadratic Penalties Cause Nonuniform Spatial Resolution
(IEEE, 1994-10-30)
Examines the spatial resolution properties of penalized maximum-likelihood image reconstruction methods by analyzing the local impulse response. The authors show that for emission image reconstruction using the ordinary ...