26056268
A Unified Hardware/Software Approach for Reducing Context Switching Time with Multiple Tasks
10612991
Object Oriented Mixed Scheduling Algorithm in Real Time Systems
5865107
Design and implementation of a reusable software tool with application
This paper describes the design and implementation of a software tool that can be reused for an empirical validation experiment of several commonly used software metrics in object-oriented environments. A detailed description of the steps of the potential validation experiment is provided. An overview of the software metrics considered and the required implementation of the test data to be used in the proposed experiment are also presented.
13472281
Bending and Stretching an Elastic Strip Around a Narrow Cylindrical Drum
An analysis is made of the deflected forms assumed by an elastic strip when it is bent and stretched around a rigid drum. A summary is first given of the method of analysis used and the results obtained in a previous study where the drum width is equal to or greater than that of the strip. This work is then extended to the case where the strip width exceeds that of the drum. Deflected forms and contact regions are delineated for a strip-width/drum-width ratio of two and for various values of two parameters: anticlastic deformation and tension.
11585078
An Arrival Time Approach to M/G/1-type Queues with Generalized Vacations
We propose a simple way, called the arrival time approach, of finding the queue length distributions for M/G/1-type queues with generalized server vacations. The proposed approach serves as a useful alternative to understanding complicated queueing processes such as priority queues with server vacations and MAP/G/1 queues with server vacations.
18817570
Long-term location data management for distributed moving object databases
To handle the extreme situation that must manage positional information of a very large volume, at least millions, of moving objects, a cluster-based scalable distributed computing system architecture, called the GALIS, which consists of multiple data processors, each dedicated to keeping records relevant to a different geographical zone and a different time zone, was proposed. In this paper, we propose a valid time management and time-zone shifting scheme, which are essential in realizing the long-term location data subsystem of GALIS, but missed in our previous prototype development. We explain how to manage valid time of moving objects to avoid ambiguity of location information. We also describe time-zone shifting algorithm, with three variations, such as RT-TZS, B-TZS and TPB-TZS. Through experiments related with query processing time and CPU utilization, we show the efficiency of the proposed time-zone shifting schemes
19085830
An analysis of multiple-class vacation queues with individual thresholds
This study examines a multiple-class M/G/1 queue with multiple thresholds. Each class of customer arrives according to an independent Poisson process, and each class has its own threshold. The idle server is reactivated as soon as any one of the thresholds is reached. Both FCFS and non-preemptive priority cases are considered. The Laplace-Stieltjes transform of the waiting time distribution function and the mean waiting time for each class of customers are derived.
11497645
Spam Deobfuscation using a Hidden Markov Model
To circumvent spam filters, many spammers attempt to obfuscate their emails by deliberately misspelling words or introducing other errors into the text. For example viagra may be written vigra, or mortgage written m0rt gage. Even though humans have little difficulty reading obfuscated emails, most content-based filters are unable to recognize these obfuscated spam words. In this paper, we present a hidden Markov model for deobfuscating spam emails. We empirically demonstrate that our model is robust to many types of obfuscation including misspellings, incorrect segmentations (adding/removing spaces), and substitutions/insertions of non-alphabetic characters.