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Articles 4801 - 4830 of 6048
Full-Text Articles in Entire DC Network
Analysis Of Stripline And Waveguide Discontinuities As A 2d-Problem Using Finite Difference Time Domain Method, Andrei Goumilevski
Analysis Of Stripline And Waveguide Discontinuities As A 2d-Problem Using Finite Difference Time Domain Method, Andrei Goumilevski
Electronic Theses and Dissertations
No abstract provided.
Fraternity Myth-Making In The Twentieth Century :L : Three Studies In Folk History, Matthew Mcmillian Brothers
Fraternity Myth-Making In The Twentieth Century :L : Three Studies In Folk History, Matthew Mcmillian Brothers
Electronic Theses and Dissertations
No abstract provided.
A Theoretical Study Of The Excited States Of Butatrienylidene And The Isomerization Of Bicyclo [2.1.0] Pent-2-Ene To 1,3-Cyclopentadiene, Angela Janette Grayson
A Theoretical Study Of The Excited States Of Butatrienylidene And The Isomerization Of Bicyclo [2.1.0] Pent-2-Ene To 1,3-Cyclopentadiene, Angela Janette Grayson
Electronic Theses and Dissertations
No abstract provided.
1998-1999 Lindenwood University Undergraduate Course Catalog, Lindenwood University
1998-1999 Lindenwood University Undergraduate Course Catalog, Lindenwood University
Course Catalogs
Lindenwood University Undergraduate Course Catalog
Evaluation Of The Acoustic Doppler Velocimeter (Adv) For Turbulence Measurements, George Voulgaris, John H. Trowbridge
Evaluation Of The Acoustic Doppler Velocimeter (Adv) For Turbulence Measurements, George Voulgaris, John H. Trowbridge
Faculty Publications
Accuracy of the acoustic Doppler velocimeter (ADV) is evaluated in this paper. Simultaneous measurements of open-channel flow were undertaken in a 17-m flume using an ADV and a laser Doppler velocimeter. Flow velocity records obtained by both instruments are used for estimating the true (‘‘ground truth’’) flow characteristics and the noise variances encountered during the experimental runs. The measured values are compared with estimates of the true flow characteristics and values of variance (^u92&, ^w92&) and covariance (^u9w9&) predicted by semiempirical models for open-channel flow. The analysis showed that the ADV sensor can measure mean velocity and Reynolds stress within …
Router Plugins: A Modular And Extensible Software Framework For Modern High Performance Integrated Services Routers, Dan Decasper, Zubin Dittia, Guru Parulkar, Bernhard Plattner
Router Plugins: A Modular And Extensible Software Framework For Modern High Performance Integrated Services Routers, Dan Decasper, Zubin Dittia, Guru Parulkar, Bernhard Plattner
All Computer Science and Engineering Research
Present day routers typically employ monolithic operating systems which are not easily upgraded and extensible. WIth the rapid rate of protocol development it is becoming increasingly important to dynamically upgrade router software in an incremental fashion. We have designed and implemented a high performance, modular, extended integrated services router software architecture in the NetBSD operating system kernel. This architecture allows code modules, called plugins, to be dynamically added and configured at run time. One of the novel features of our design is the ability to bind different plugins to individual flows; this allows for distinct plugin implementations to seamlessly coexist …
The Playground Mediator: Visual Tool For Configuring And Debugging Distributed Applications, T. Paul Mccartney
The Playground Mediator: Visual Tool For Configuring And Debugging Distributed Applications, T. Paul Mccartney
All Computer Science and Engineering Research
The Mediator is a visual configuration tool for use with The Programmers' Playground distributed programming environment. With the Mediator, one can interactively launch distributed application modules, configured communication among the modules, observe communication patterns, interactively control module communication, kill running modules, and receive imported applications from a separate World Wide Web interface. This manual describes how to use the Mediator both as a stand-alone configuration tool and as a visual interface to the Playground Application Management System.
Integrating A Constraint Mechanism With The Javabeans Model, William M. Shapiro
Integrating A Constraint Mechanism With The Javabeans Model, William M. Shapiro
All Computer Science and Engineering Research
The JavaBeans component model allows users to plug together software components to create Java applications by specifying simple relationships between component events and properties. This paper describes work on augmenting the simple JavaBeans model with a multi-way constraint mechanism that allows users to graphically specify more complex multi-way contraints, resolve cyclical constraints between bean properties and graphically layout bean components. We also discuss weaknesses in the JavaBeans model and Java Abstract Windowing Toolkit (AWT) that were discovered while integrating a constraint mechanism with JavaBeans.
Congestion Control In Multicast Transport Protocols, Rajib Ghosh, George Varghese
Congestion Control In Multicast Transport Protocols, Rajib Ghosh, George Varghese
All Computer Science and Engineering Research
We discuss congestion control mechanisms in multicast transport protocols and we propose TCP-M - a TCP-friendly Multicast transport protocol. TCP-M uses IP multicast to deliver data packets and acknowledgements to provide reliability. Ack implosion at the source is prevented by fusing acknowledgements at some intermediate routers. TCP-M reacts to network congestion exactly like TCP by having the sender emulate a TCP sender.
Search And Tracking Algorithms For Rapidly Moving Mobiles, Amy L. Murphy, Gruia-Catalin Roman, George Varghese
Search And Tracking Algorithms For Rapidly Moving Mobiles, Amy L. Murphy, Gruia-Catalin Roman, George Varghese
All Computer Science and Engineering Research
With the advent of wireless technology and laptops, mobility is an important area of research. A fundamental problem in this area is the delivery of messages to a moving mobile. Current solutions work correctly only for slowly moving nodes that stay in one location long enough for tracking to stabilize. In this paper we consider the problem of message delivery to rapidly moving mobile units. With these algorithms, we introduce a new method for designing algorithms based on the paradigm of considering a mobile unit as a message, and adapting traditional message passing algorithms to mobility. Our first algorithm is …
Modeling Mobile Ip In Mobile Unity, Peter J. Mccann, Gruia-Catalin Roman
Modeling Mobile Ip In Mobile Unity, Peter J. Mccann, Gruia-Catalin Roman
All Computer Science and Engineering Research
With recent advances in wireless communication technology, mobile computing is an increasingly important area of research. A mobile system is one where independently executing components may migrate through some space during the course of the computation, and where the pattern of connectivity among the components changes as they move in and out of proximity. Mobile UNITY is a notation and proof logic for specifying and reasoning about mobile systems. In this paper it is argued that Mobile UNITY contributes to the modular development of system specifications because of the declarative fashion in which coordination among components is specified. The packet …
Tcp/Ip Implementation With Endsystem Qos, Sherlia Y. Shi, Gurudatta M. Parulkar, R. Gopalakrishnan
Tcp/Ip Implementation With Endsystem Qos, Sherlia Y. Shi, Gurudatta M. Parulkar, R. Gopalakrishnan
All Computer Science and Engineering Research
This paper presents a Real-time Upcall (RTU) [1] based TCP/IP implementation that guarantees throughput for continuous media applications and ensures low latency bounds for interactive applications. RTU is an endsystem rate-based scheduling mechanism that provides quality of service (QoS) in terms of CPU cycles, to applications. We restructured the existing NetBSD TCP/IP implementation to exploit the RTU concurrency model and to provide predictable performance. Our experimental results show that on two 200 MHz NetBSD PCs connected by a 155Mbps ATM link, the RTU based kernel TCP/IP implementation provides excellent throughput guarantees for periodic connections regardless the system or network load. …
Routing Table Compression Using Binary Tree Collapse, Jonathan Turner, Qiyong Bian, Marcel Waldvogel
Routing Table Compression Using Binary Tree Collapse, Jonathan Turner, Qiyong Bian, Marcel Waldvogel
All Computer Science and Engineering Research
This paper describes an algorithm which can roughly halve the size of the current Internet routing tables. This algorithm is based on the radix trie representation of routing tables, which was firstly used in the BSD Unix distributions. The binary tree representation, which is a simplified case of radix tree, does well at showing the relationships among all routing table entries and provides us a way to build a collapse algorithm based on its internal structure. The binary tree collapse algorithm consists of three techniques, with the first two quite intuitive while the third is a bit more elaborate. All …
On-Line Scheduling With Hard Deadlines, Sally A. Goldman, Jyoti Parwatikar, Subhash Suri
On-Line Scheduling With Hard Deadlines, Sally A. Goldman, Jyoti Parwatikar, Subhash Suri
All Computer Science and Engineering Research
We study non-preemptive, online admission control in the hard deadline model: each job must be either serviced prior to its deadline, or be rejected. Our setting consists of a single resource that services an online sequence of jobs; each job has a length indicating the length of time for which it needs the resource, and a delay indicating the maximum time it can wait for the service to be started. The goal is to maximize total resource utilization. The jobs are non-preemptive and exclusive, meaning once a job begins, it runs to completion, and at most one job can use …
Tcp Dynamic Acknowledgment Delay: Theory And Practice, Daniel R. Dooly, Sally A. Goldman, Stephen D. Scott
Tcp Dynamic Acknowledgment Delay: Theory And Practice, Daniel R. Dooly, Sally A. Goldman, Stephen D. Scott
All Computer Science and Engineering Research
We study an on-line problem that is motivated by the networking problem of dynamically adjusting delays of acknowledgments in the Transmission Control Protocol (TCP). The theoretical problem we study is the following. There is a sequence of n packet arrival times A = and a look-ahead coefficient L. The goal is to partition A into k subsequences sigma1, sigma2, ...,sigmak (where a subsequence end is defined by an acknowledgment) that minimizes a linear combination of the cost for the number of acknowledgments sent and the cost for the additional latency introduced by delaying acknowledgments. At each arrival, an oracle provides …
Terabit Burst Switching Progress Report (6/98-9/98), Jonathan S. Turner
Terabit Burst Switching Progress Report (6/98-9/98), Jonathan S. Turner
All Computer Science and Engineering Research
This report summarizes progress on the Terabit Burst Switching Project at Washington University for the period from June 15, 1998 through September 15, 1998.
A Mathematical Model For Fibroblast And Collagen Orientation, J. C. Dallon, J. A. Sherratt
A Mathematical Model For Fibroblast And Collagen Orientation, J. C. Dallon, J. A. Sherratt
Faculty Publications
Due to the increasing importance of the extracellular matrix in many biological problems, in this paper we develop a model for fibroblast and collagen orientation with the ultimate objective of understanding how fibroblasts form and remodel the extracellular matrix, in particular its collagen component. The model uses integro-differential equations to describe the interaction between the cells and fibers at a point in space with various orientations. The equations are studied both analytically and numerically to discover different types of solutions and their behavior. In particular we examine solutions where all the fibroblasts and collagen have discrete orientations, a localized continuum …
Alkaline Rocks And Geodynamics, Bernard Bonin
Alkaline Rocks And Geodynamics, Bernard Bonin
Turkish Journal of Earth Sciences
Origin of A-type alkali feldspar granites is currently the subject of a world-wide debate. Contrasting hypotheses have been proposed, which range from an entirely crustal origin to an almost complete mantle derivation. A-type alkali feldspar granites belong to either unimodal granite (rhyolite)-dominated association, or bimodal gabbro (basalt)-granite (rhyolite) suite. It is argued that (i) the ultimate mantle origin of basic to intermediate rocks is beyond doubt, (ii) highly evolved felsic rocks may be produced by other processes besides crustal involvement through anatexis and (iii) large volumes of felsic rocks are a normal and direct consequence of extensive crystal fractionation processes. …
Application Of Hierarchical Monte Carlo Simulation To The Estimation Of Human Exposure To Mercury Via Consumption Of King Mackerel (Scomberomorus Cavalla), W. Leonard Balthis
Application Of Hierarchical Monte Carlo Simulation To The Estimation Of Human Exposure To Mercury Via Consumption Of King Mackerel (Scomberomorus Cavalla), W. Leonard Balthis
MUSC Theses and Dissertations
Data from mercury poisoning episodes in Japan and Iraq have been used to derive threshold levels for health effects in humans, and the U. S. Environmental Protection Agency (EPA) has established a reference dose (RfD) for methylmercury of 0.30 µg/kg/day. It is desirable, therefore, to predict exposures for various populations, and examine these exposures in relation to the established RfD. Given data on mercury concentrations in fish, and rates of fish consumption among human populations, it is possible to calculate exposure in one of several ways. One of the simplest ways involves the use of average values to compute a …
Interview With Manuel Delanda, Switch Staffs
Interview With Manuel Delanda, Switch Staffs
SWITCH
An interview with philosopher Manuel De Landa and SJSU CADRE students, Brett Stalbaum, Matt Hoessli, Geri Wittig, Kristin Cully, Geoffrey Bruce, Anne-Marie Schleiner. De Landa's work focuses on the use of networks as a medium of expression. The discussion traces networking technology, including machine intelligence or artificial intelligence’s evolution from military to civilian contexts. They discuss, "One Thousand Years of Nonlinear History", De Landa's most recent book at that time that shows the history of the world from a non-anthropocentric view to make the worldview more inclusive as a self-organized and dynamical system that is unaffected by the hierarchical perspective …
Language Bindings For A Data-Parallel Runtime, Bryan Carpenter, Geoffrey C. Fox, Donald Leskiw, Xinying Li, Yuhong Wen
Language Bindings For A Data-Parallel Runtime, Bryan Carpenter, Geoffrey C. Fox, Donald Leskiw, Xinying Li, Yuhong Wen
Northeast Parallel Architecture Center
The NPAC kernel runtime, developed in the PCRC (Parallel Compiler Runtime Consortium) project, is a runtime library with special support for the High Performance Fortran data model. It provides array descriptors for a generalized class of HPF-like distributed arrays, support for parallel access to their elements, and a rich library of collective communication and arithmetic operations for manipulating these arrays. The library has been successfully used as a component in experimental HPF translation systems. With prospects for early appearance of fully-featured, efficient HPF compilers looking questionable, we discuss a class of more easily implementable data-parallel language extensions that preserve many …
Java/Corba Based Real-Time Infrastructure To Integrate Event-Driven Simulations, Collaboration And Distributed Object/Componentware Computing, Geoffrey C. Fox, Wojtek Furmanski, Hasan T. Ozdemir
Java/Corba Based Real-Time Infrastructure To Integrate Event-Driven Simulations, Collaboration And Distributed Object/Componentware Computing, Geoffrey C. Fox, Wojtek Furmanski, Hasan T. Ozdemir
Northeast Parallel Architecture Center
We are discussing the four major standard candidates for distributed object/componentware computing: Java, CORBA, COM and WOM within our proposed coordination framework we call Pragmatic Object Web (POW). We describe our integration approach based on multi-protocol middleware server JWORB (Java Web Object Request Broker) that currently integrates HTTP and IIOP and which we now further develop to also support COM and WOM core functionalities. We are also experimenting with visual data ow authoring front-ends using NPAC WebFlow system on top of JWORB based software bus. Finally, we illustrate our technologies in one major application domain- DoD Modeling and Simulation- where …
Winchell Posters
Journal of the Minnesota Academy of Science
Abstracts from the Winchell Posters given at the 66th Annual Meeting for the Journal of the Minnesota Academy of Science.
Letter To The Editor, John C. Wheeler
Letter To The Editor, John C. Wheeler
Journal of the Minnesota Academy of Science
No abstract provided.
Basic Fibroblast Growth Factor And Hepatocyte Growth Factor Content Of Wound, Repair, And Muscle Regeneration Fluids, Raymond E. Sicard, Wendy A. Mand
Basic Fibroblast Growth Factor And Hepatocyte Growth Factor Content Of Wound, Repair, And Muscle Regeneration Fluids, Raymond E. Sicard, Wendy A. Mand
Journal of the Minnesota Academy of Science
Injury produces marked changes to the local environment. Changes in both diversity and availability of bioactive substances at wound sites might discriminate between repair and regeneration microenvironments and selectively drive events leading to final resolution. Among factors with potential relevance to wound repair and regeneration are basic fibroblast growth factor (bFGF) and hepatocyte growth factor (HGF). In this study, concentrations of these factors were determined in fluids derived from wound, repair, and regeneration-conditioned models using enzyme-linked immunosorbent assays. All fluids contained substantial concentrations of bFGF which rose 5- to I 5-fold as resolution to injury was achieved. Mean bFGF content …
Resonans Reflectionless Absorption Ofelectromagnetic Waves In Solutions, E. Salaev, E. Gasimov, S. Azizov, J. Qajar
Resonans Reflectionless Absorption Ofelectromagnetic Waves In Solutions, E. Salaev, E. Gasimov, S. Azizov, J. Qajar
Turkish Journal of Physics
No abstract provided.
Oil And Gas Map Of The Evansville 30 X 60 Minute Quadrangle, Kentucky, Brandon C. Nuttall
Oil And Gas Map Of The Evansville 30 X 60 Minute Quadrangle, Kentucky, Brandon C. Nuttall
Map and Chart--KGS
No abstract provided.
Mineral And Fuel Resources Map Of Kentucky, Warren H. Anderson, Garland R. Dever Jr.
Mineral And Fuel Resources Map Of Kentucky, Warren H. Anderson, Garland R. Dever Jr.
Map and Chart--KGS
The production of minerals and fuels in Kentucky is a multibillion dollar industry. Historically, coal, oil, natural gas, limestone, sand and gravel, clay, fluorite, barite, lead, iron, phosphate, zinc, and brines have been produced in the State. These resources have greatly influenced the development of Kentucky by providing raw materials for the early settlers who settled the State and for current industrial and economic development. Electrical power for homes, businesses, and factories; materials for constructing houses, buildings, automobiles, and roads; and products we consume in everyday life come from the earth's mineral and fuel resources.
Impact Of Topographic And Data Resolution On Hydrologic And Nonpoint-Source Pollution Modeling In A Karst Terrane, Alex W. Fogle
Impact Of Topographic And Data Resolution On Hydrologic And Nonpoint-Source Pollution Modeling In A Karst Terrane, Alex W. Fogle
Report of Investigations--KGS
To prevent or reduce the contamination of ground water from agricultural sources, Best Management Practices (BMP’s) such as land-use changes, modifications to control surface runoff, various tillage methods, variations in rates and kinds of chemical applications, and handling procedures for chemicals are being employed and analyzed for effectiveness. The effectiveness of a BMP is often estimated before implementation by evaluating the BMP through the use of computer simulation models. The interactions between surface water and ground water that are unique to karst terranes are not incorporated into the frequently used predictive models. The purpose of this study was to document …