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Using Webhla To Integrate Hpc Fms Modules With Web/Commodity Based Distributed Object Technologies Of Corba, Java, Com And Xml, Geoffrey C. Fox, Wojtek Furmanski, Ganesh Krishnamurthy, Hasan T. Ozdemir, Zeynep Odcikin-Ozdemir, Tom A. Pulikal, Krishnan Rangarajan, Ankur Sood Jan 1999

Using Webhla To Integrate Hpc Fms Modules With Web/Commodity Based Distributed Object Technologies Of Corba, Java, Com And Xml, Geoffrey C. Fox, Wojtek Furmanski, Ganesh Krishnamurthy, Hasan T. Ozdemir, Zeynep Odcikin-Ozdemir, Tom A. Pulikal, Krishnan Rangarajan, Ankur Sood

Northeast Parallel Architecture Center

HLA standards for interoperability between various DoD Modeling and Simulation paradigms are being enforced in parallel with the rapid onset of new Object Web / Commodity standards for distributed objects and componentware, emergent at the crossroads of CORBA, COM, Java, and XML technologies. WebHLA explores synergies between and integrates both trends by offering Object Web based implementation of the HLA framework. Our goal is to deliver a uniform platform that facilitates conversion of legacy codes to and development of new codes in compliance with HLA, HPC and Object Web standards. We outline here the overall design of WebHLA, we summarize …

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Internetics: Technologies, Applications And Academic Field, Or, Parallel Computing And Computational Science Do Not Quite Work, Geoffrey C. Fox Jan 1999

Internetics: Technologies, Applications And Academic Field, Or, Parallel Computing And Computational Science Do Not Quite Work, Geoffrey C. Fox

Northeast Parallel Architecture Center

Ten years ago, we were all sure that parallel computing technology and the interdisciplinary academic field of computational science would be center pieces of both academic and economic growth. We show that this insight was, in principle, correct but was an incomplete vision for large-scale computation implies both increased computer power and increasing numbers of users and applications. Parallel computing undoubtedly works on essentially all problems, but we were unable to produce deployable software systems. Further, few industries could achieve adequate return to justify investment in parallel computers, except in a few areas such as databases. Computational science is the …

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A Hierarchical Analysis Approach For High Performance Computing And Communication Applications, Salim Hariri, Pramod Varshney, Luying Zhou, Vinod V. Menon, Shihab Ghaya Jan 1999

A Hierarchical Analysis Approach For High Performance Computing And Communication Applications, Salim Hariri, Pramod Varshney, Luying Zhou, Vinod V. Menon, Shihab Ghaya

Electrical Engineering and Computer Science - All Scholarship

The proliferation of high performance computers and high-speed networks has made parallel and distributed computing feasible and cost-effective on High Performance Computing and Communication Systems (HPCC). However, the design, analysis and development of parallel and distributed applications on such computing systems are still very challenging tasks. Therefore, there is a great need for an integrated multilevel analysis methodology to assist in designing and analyzing the performance of both existing and proposed systems. Currently, there are no comprehensive analysis methods that address such diverse needs. This paper presents a three-level hierarchical modeling approach for analyzing the end-to-end performance of an application …

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Determination Of The Lep Centre-Of-Mass Energy From Zγ Events, R. Barate, Manoj Thulasidas Jan 1999

Determination Of The Lep Centre-Of-Mass Energy From Zγ Events, R. Barate, Manoj Thulasidas

Research Collection School Of Computing and Information Systems

A study of events with photons and missing energy has been performed with the data sample obtained with the ALEPH detector at centre-of-mass energies from 161 to 184 GeV, corresponding to a total integrated luminosity of about 80 pb−1. The measured distributions are in agreement with Standard Model predictions, leading to constraints on WWγ gauge coupling parameters ∆κγ and λγ. The results from the fit to the cross sections and to the energy and angular distributions of the photons are: ∆κγ = 0.05+1.15 −1.10(stat)±0.25(syst) λγ = −0.05+1.55 −1.45(stat)±0.30(syst).

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Processes Driving The Networked Economy, Amit P. Sheth, Will Van Der Aalst, I. Budak Arpinar Jan 1999

Processes Driving The Networked Economy, Amit P. Sheth, Will Van Der Aalst, I. Budak Arpinar

Kno.e.sis Publications

The authors propose that an organic workflow-process technology will power the evolution of information system architectures. The authors outline three likely stages of architectural evolution in the context of a networked economy and discuss critical gaps in the current technology with respect to their envisioned future.

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Object Oriented Enterprise Modeling And Distributed Cognition At A New University: Csu Monterey Bay, Armando A. Arias Jr., Beryl L. Bellman Jan 1999

Object Oriented Enterprise Modeling And Distributed Cognition At A New University: Csu Monterey Bay, Armando A. Arias Jr., Beryl L. Bellman

SSGS Faculty Publications and Presentations

No abstract provided.

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Design And Code Generation Concepts For Statechart Diagrams Of The Uml V1.1 In Concurrent Environments, Pierre Metz Jan 1999

Design And Code Generation Concepts For Statechart Diagrams Of The Uml V1.1 In Concurrent Environments, Pierre Metz

Theses

This thesis deals with code generation concepts for the statechart diagrams of the UML vl.l. It explores implementation approaches for mapping statechart diagrams to code. It also focuses on modelling rules for consistent design of dynamic object behaviour. Most of the given object-oriented (00) methods have statechart diagrams as their centre. It is proposed to use statechart diagrams to model the internal behaviour of objects and lifecycles, respectively. Generally, statechart diagrams are used in the area of analysis and design of reactive systems such as realtime- and embedded-systems. This thesis introduces different existing implementation patterns and shows how they can …

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The Nature And Structure Of Impediments To Edi Adoption And Integration: A Survey Of Small- And Medium-Sized Enterprises, Deepak Khazanchi Jan 1999

The Nature And Structure Of Impediments To Edi Adoption And Integration: A Survey Of Small- And Medium-Sized Enterprises, Deepak Khazanchi

Information Systems and Quantitative Analysis Faculty Publications

Electronic data interchange (EDI) is a key enabling component of business-to-business electronic commerce. As firms adopt and integrate advanced information technologies such as EDI, it is important to understand the nature of challenges faced by them. This becomes especially important given the fact that nearly 99.7% of all businesses in the US can be classified as small- to medium-sized enterprises (SMEs). As costs and risks associated with implementing new information technologies decrease, these firms will surely need to focus their attention on managing impediments associated with new technology implementation and learn from the failures or successes of their peer. Consequently, …

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Parametric Polymorphism In The Simple Language, Soumaia Ahmed Al Ayyat Jan 1999

Parametric Polymorphism In The Simple Language, Soumaia Ahmed Al Ayyat

Archived Theses and Dissertations

No abstract provided.

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Application-Specific Extensible Operating System's Support For Mpeg Video-Encoding, Kamal Wagdy Botros Sami Jan 1999

Application-Specific Extensible Operating System's Support For Mpeg Video-Encoding, Kamal Wagdy Botros Sami

Archived Theses and Dissertations

No abstract provided.

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Weighting Unusual Feature Types, Nicholas Howe, Claire Cardie Jan 1999

Weighting Unusual Feature Types, Nicholas Howe, Claire Cardie

Computer Science: Faculty Publications

Feature weighting is known empirically to improve classification accuracy for k-nearest neighbor classifiers in tasks with irrelevant features. Many feature weighting algorithms are designed to work with symbolic features, or numeric features, or both, but cannot be applied to problems with features that do not fit these categories. This paper presents a new k-nearest neighbor feature weighting algorithm that works with any kind of feature for which a distance function can be defined. Applied to an image classification task with unusual set-like features, the technique improves classification accuracy significantly. In tests on standard data sets from the UCI repository, the …

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Embedded Training For Complex Information Systems, Brant A. Cheikes Jan 1999

Embedded Training For Complex Information Systems, Brant A. Cheikes

Computer Science: Faculty Publications

One approach to providing affordable operator training in the workplace is to augment applications with intelligent embedded training systems (ETS). Intelligent embedded training is highly interactive: trainees practice realistic problem-solving tasks on the prime application with guidance and feedback from the training system. This article makes three contributions to the theory and technology of ETS design. First, we describe a framework based on Norman’s “stages of user activity” model for defining the instructional objectives of an ETS. Second, we demonstrate a non-invasive approach to instrumenting software applications, thereby enabling them to collaborate with an ETS. Third, we describe a method …

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Creating A New University Through Object Oriented Enterprise Modeling: A Study Of Communications Knowledge Management & Distributed Cognition, Armando A. Arias Jr., Beryl L. Bellman Jan 1999

Creating A New University Through Object Oriented Enterprise Modeling: A Study Of Communications Knowledge Management & Distributed Cognition, Armando A. Arias Jr., Beryl L. Bellman

SSGS Faculty Publications and Presentations

Enterprise based object oriented (OO) and Unified Modeling Language (UML) modeling makes it possible to build the needed visual environments to organize people, technologies and activities (Arias, 1999d). In our modeling approach, the focus is on "things and relationships between things" described in commonly used terms. The modeling software bridges the so-called "semantic gap" between the people and the computer language (Booch, Rumbaugh & Jacobson, 1999). An object can be a product, a process, a person, a team, a company, an application or the inter-relationship between other objects. Objects can be pictured on the screen as maps formed by personalized …

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Benchmarking Financial Operations Using The Premier Operations Outlook Database, Margaret M. Thompson Jan 1999

Benchmarking Financial Operations Using The Premier Operations Outlook Database, Margaret M. Thompson

Community & Environmental Health Theses & Dissertations

Acute-care hospitals have come under increased pressure to reduce costs while increasing the quality of providing care. Historically, increasing costs of providing care has had the greatest impact on the reduction of operating margins necessary to expand capital and for repayment of debt. Facilities can benchmark internal historical data to identify areas where costs have increased and are able to explain the factors that contribute to the increases. One of the challenges facing hospitals in their efforts to reduce operating costs is how, what, and where, do they obtain comparative data to benchmark the cost of operating medical facility to …

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A Dual Encryption Protocol For Scalable Secure Multicasting, Lakshminath R. Dondeti, Sarit Mukherjee, Ashok K. Samal Jan 1999

A Dual Encryption Protocol For Scalable Secure Multicasting, Lakshminath R. Dondeti, Sarit Mukherjee, Ashok K. Samal

School of Computing: Conference and Workshop Papers

In this paper we propose a dual encryption protocol for scalable secure multicasting. Multicasting is a scalable solution for group communication. It howevel; poses several unique security problems. We use hierarchical subgrouping to achieve scalability. Third party hosts or members of the multicast group are designated as subgroup managers. They are responsible for secret key distribution and group membership management at the subgroup level. Unlike existing secure multicast protocols, our protocol need not trust the subgroup managers with the distribution of data encryption keys. The dual encryption protocol proposed in this paper distributes encrypted data encryption keys via subgroup managers. …

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Routing And Wavelength Assignment (Rwa) With Power Considerations In All- Optical Wavelength-Routed Networks, Maher Ali, Byrav Ramamurthy, Jitender S. Deogun Jan 1999

Routing And Wavelength Assignment (Rwa) With Power Considerations In All- Optical Wavelength-Routed Networks, Maher Ali, Byrav Ramamurthy, Jitender S. Deogun

School of Computing: Conference and Workshop Papers

Routing and wavelength assignment (RWA) is an important problem that arises in wavelength division multiplexed (WDM) optical networks. Previous studies have solved many variations of this problem under the assumption of perfect conditions regarding the power of a signal. In this paper, we investigate this problem while allowing for degradation of routed signals by components such as taps, multiplexers, and fiber links. We assume that optical amplifiers are preplaced. We investigate the problem of routing the maximum number of connections while maintaining proper power levels. The problem is formulated as a mixed-integer nonlinear program and two-phase hybrid solution approaches employing …

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Routing Algorithms For All-Optical Networks With Power Considerations: The Unicast Case, Maher Ali, Byrav Ramamurthy, Jitender S. Deogun Jan 1999

Routing Algorithms For All-Optical Networks With Power Considerations: The Unicast Case, Maher Ali, Byrav Ramamurthy, Jitender S. Deogun

School of Computing: Conference and Workshop Papers

In this paper, we investigate the problem of routing connections in all-optical networks while allowing for degradation of routed signals by different optical components. To overcome the complexity of the problem, we divide it into two parts. First, we solve the pure RWA problem using fixed routes for every connection. Second, power assignment is accomplished by either using the smallest-gain first (SGF) heuristic or using a genetic algorithm. Numerical examples on a wide variety of networks show that (a) the number of connections established without considering the signal attenuation was most of the time greater than that achievable considering attenuation …

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Search For The Standard Model Higgs Boson At The Lep2 Collider Near √S = 183 Gev, R. Barate, M. Thulasidas Jan 1999

Search For The Standard Model Higgs Boson At The Lep2 Collider Near √S = 183 Gev, R. Barate, M. Thulasidas

Research Collection School Of Computing and Information Systems

During 1997 the ALEPH experiment at LEP gathered 57pb−1 of data at centre-of-mass energies near 183 GeV. These data are used to look for possible signals from the production of the Standard Model Higgs boson in the reaction e+e−→HZ. No evidence of a signal is found in the data; seven events are selected, in agreement with the expectation of 7.2 events from background processes. This observation results in an improved lower limit on the mass of the Higgs boson: mH>87.9GeV/c2 at 95% confidence level.

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Search For Bs0 Oscillations Using Inclusive Lepton Events, R. Barate, M. Thulasidas Jan 1999

Search For Bs0 Oscillations Using Inclusive Lepton Events, R. Barate, M. Thulasidas

Research Collection School Of Computing and Information Systems

A search for B0sBs0 oscillations is performed using a sample of semileptonic b-hadron decays collected by the ALEPH experiment during 1991–95. Compared to previous inclusive lepton analyses, the proper time resolution and b-flavour mistag rate are significantly improved. Additional sensitivity to B0sBs0 mixing is obtained by identifying subsamples of events having a B0sBs0 purity which is higher than the average for the whole data sample. Unbinned maximum likelihood amplitude fits are performed to derive a lower limit of Δms>9.5ps−1Δms>9.5ps−1 at the 95% confidence limit (95% CL). Combining with the ALEPH D−sDs−-based analyses yields Δms>9.6ps−1Δms>9.6ps−1 at 95% …

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Decision Analytic Approach To Severe Head Injury Management., Harmanec D., Tze-Yun Leong, Sundaresh S., Poh K., Yeo T., Ng I., Lew T. Jan 1999

Decision Analytic Approach To Severe Head Injury Management., Harmanec D., Tze-Yun Leong, Sundaresh S., Poh K., Yeo T., Ng I., Lew T.

Research Collection School Of Computing and Information Systems

Severe head injury management in the intensive care unit is extremely challenging due to the complex domain, the uncertain intervention efficacies, and the time-critical setting. We adopt a decision analytic approach to automate the management process. We document our experience in building a simplified influence diagram that involves about 3000 numerical parameters. We identify the inherent problems in structuring a model with unclear domain relationships, numerous interacting variables, and real-time multiple inputs. We analyze the effectiveness and limitations of the decision analytic approach and present a set of desiderata for effective knowledge acquisition in this setting. We also propose a …

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Applications Of Advanced Software Techniques To Internet And Www Server Development, John A. Brosnan Jan 1999

Applications Of Advanced Software Techniques To Internet And Www Server Development, John A. Brosnan

Theses

We are living in an information age. Never before has so much data been globally available and instantaneously accessible. The main reason for this revolution is the arrival of the Internet; or perhaps more accurately, the World Wide Web(WWW). This thesis discusses the development of Internet and WWW servers and the latest Web technologies including Java, CORBA and Object Databases. It presents the fundamental concepts of server development and aims to study in particular dynamic WWW servers providing multimedia content. From the viewpoint of interoperability, the CORBA multimedia standard is reviewed. The various mechanisms of data storage and retrieval for …

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Cost-Benefit Analysis Of Web Bag In A Web Warehouse, Sanjay Kumar Madria, Wee Keong Ng, Ee-Peng Lim, Sourav S. Bhowmick Jan 1999

Cost-Benefit Analysis Of Web Bag In A Web Warehouse, Sanjay Kumar Madria, Wee Keong Ng, Ee-Peng Lim, Sourav S. Bhowmick

Computer Science Faculty Research & Creative Works

Sets and bags are closely related structures and have been studied in relational databases. A bag is different from a set in that it is sensitive to the number of times an element occurs, while a set is not. In this paper, we introduce the concept of a Web bag in the context of a World Wide Web warehouse called WHOWEDA (WareHouse Of WEb DAta) which we are currently building. Informally, a Web bag is a Web table which allows multiple occurrences of identical Web types. A Web bag helps one to discover useful knowledge from a Web table, such …

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Smart Objects, Dumb Archives: A User-Centric, Layered Digital Library Framework, Kurt Maly, Michael L. Nelson, Mohammad Zubair Jan 1999

Smart Objects, Dumb Archives: A User-Centric, Layered Digital Library Framework, Kurt Maly, Michael L. Nelson, Mohammad Zubair

Computer Science Faculty Publications

Discusses digital libraries, interoperability, and interfaces to access them, and proposes one universal protocol for communication for simple archives based on the hypertext transfer protocol (http). Describes the creation of a special class of digital objects called buckets, archives based on a NASA collection, and a set of digital library services. (Author/LRW)

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Harp: A Distributed Query System For Legacy Public Libraries And Structured Databases, Ee Peng Lim, Ying Lu Jan 1999

Harp: A Distributed Query System For Legacy Public Libraries And Structured Databases, Ee Peng Lim, Ying Lu

Research Collection School Of Computing and Information Systems

The main purpose of a digital library is to facilitate users easy access to enormous amount of globally networked information. Typically, this information includes preexisting public library catalog data, digitized document collections, and other databases. In this article, we describe the distributed query system of a digital library prototype system known as HARP. In the HARP project, we have designed and implemented a distributed query processor and its query front-end to support integrated queries to preexisting public library catalogs and structured databases. This article describes our experiences in the design of an extended Sequel (SQL) query language known as HarpSQL. …

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Web-Based Interlibrary Loan System, Ee Peng Lim, Schubert Foo, Cheng Hai Tan, Kwang-Yong Tan Jan 1999

Web-Based Interlibrary Loan System, Ee Peng Lim, Schubert Foo, Cheng Hai Tan, Kwang-Yong Tan

Research Collection School Of Computing and Information Systems

Interlibrary loan (ILL) system is one of the important library services provided by most public libraries. Through ILL, public libraries share their collections of reading material and library users are able to access library resources beyond their affiliated libraries. However, the present manual ILL process is inconvenient, inefficient and error-prone. In this project, we developed a system that automated many tedious procedures in the existing ILL system. The new ILL system is realized by a number of Java applets customized for librarians and library users. The new ILL system allows library users to submit ILL requests at any time using …

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Compute As Fast As The Engineers Can Think! Utrafast Computing Team Final Report, Robert T. Biedron, P. Mehrotra, Michael L. Nelson, M. L. Preston, J. J. Rehder, J. L. Rogersm, D. H. Rudy, J. Sobieski, O. O. Storaasli Jan 1999

Compute As Fast As The Engineers Can Think! Utrafast Computing Team Final Report, Robert T. Biedron, P. Mehrotra, Michael L. Nelson, M. L. Preston, J. J. Rehder, J. L. Rogersm, D. H. Rudy, J. Sobieski, O. O. Storaasli

Computer Science Faculty Publications

This report documents findings and recommendations by the Ultrafast Computing Team (UCT). In the period 10-12/98, UCT reviewed design case scenarios for a supersonic transport and a reusable launch vehicle to derive computing requirements necessary for support of a design process with efficiency so radically improved that human thought rather than the computer paces the process. Assessment of the present computing capability against the above requirements indicated a need for further improvement in computing speed by several orders of magnitude to reduce time to solution from tens of hours to seconds in major applications. Evaluation of the trends in computer …

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A Digital Library For The National Advisory Committee For Aeronautics, Michael L. Nelson Jan 1999

A Digital Library For The National Advisory Committee For Aeronautics, Michael L. Nelson

Computer Science Faculty Publications

We describe the digital library (DL) for the National Advisory Committee for Aeronautics (NACA), the NACA Technical Report Server (NACATRS). The predecessor organization for the National Aeronautics and Space Administration (NASA), NACA existed from 1915 until 1958. The primary manifestation of NACA's research was the NACA report series. We describe the process of converting this collection of reports to digital format and making it available on the World Wide Web (WWW) and is a node in the NASA Technical Report Server (NTRS). We describe the current state of the project, the resulting DL technology developed from the project, and the …

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Training Methods For Shunting Inhibitory Artificial Neural Networks, Son Lam Phung Jan 1999

Training Methods For Shunting Inhibitory Artificial Neural Networks, Son Lam Phung

Theses : Honours

This project investigates a new class of high-order neural networks called shunting inhibitory artificial neural networks (SIANN's) and their training methods. SIANN's are biologically inspired neural networks whose dynamics are governed by a set of coupled nonlinear differential equations. The interactions among neurons are mediated via a nonlinear mechanism called shunting inhibition, which allows the neurons to operate as adaptive nonlinear filters. The project's main objective is to devise training methods, based on error backpropagation type of algorithms, which would allow SIANNs to be trained to perform feature extraction for classification and nonlinear regression tasks. The training algorithms developed will …

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Backtracking In Wormhole-Switched Interconnection Networks, Soha Saad Zaghloul Abdallah Jan 1999

Backtracking In Wormhole-Switched Interconnection Networks, Soha Saad Zaghloul Abdallah

Archived Theses and Dissertations

No abstract provided.

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Deciding About Agent Mobility Using A Performance Cost Model, Dalia Fakher Elmansy Jan 1999

Deciding About Agent Mobility Using A Performance Cost Model, Dalia Fakher Elmansy

Archived Theses and Dissertations

No abstract provided.

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