Memento: Time Travel for the Web (2009)
Van De Sompel, Herbert, Nelson, Michael L., Sanderson, Robert, Balakireva, Lyudmila L., Ainsworth, Scott, Shankar, Harihar
The Web is ephemeral. Many resources have representations that change over time, and many of those representations are lost forever. A lucky few manage to reappear as archived resources that carry...
Investigating the Change of Web Pages' Titles Over Time (2009)
Klein, Martin, Nelson, Michael L.
Inaccessible web pages are part of the browsing experience. The content of these pages however is often not completely lost but rather missing. Lexical signatures (LS) generated from the web pages'...
Evaluating Methods to Rediscover Missing Web Pages from the Web Infrastructure (2009)
Klein, Martin, Nelson, Michael L
Missing web pages (pages that return the 404 "Page Not Found" error) are part of the browsing experience. The manual use of search engines to rediscover missing pages can be frustrating and...
Why Websites Are Lost (and How They’re Sometimes Found) (2009)
Frank Mccown, Catherine C. Marshall, Michael L. Nelson
Abstract. We have surveyed 52 individuals who have “lost ” their own personal website (through a hard drive crash, bankrupt ISP, etc.) or tried to recover a lost website that once belonged to...
Adding eScience Assets to the Data Web (2009)
Van De Sompel, Herbert, Lagoze, Carl, Nelson, Michael L., Warner, Simeon, Sanderson, Robert, Johnston, Pete
Aggregations of Web resources are increasingly important in scholarship as it adopts new methods that are data-centric, collaborative, and networked-based. The same notion of aggregations of...
Frank Mccown, Amine Benjelloun, Michael L. Nelson
When an individual loses their website and a backup cannot be found, they can download and run Warrick, a webrepository crawler which will recover their lost website by crawling the holdings of the...
Everyone is a Curator: Human-Assisted Preservation for ORE Aggregations (2009)
McCown, Frank, Nelson, Michael L., Van De Sompel, Herbert
The Open Archives Initiative (OAI) has recently created the Object Reuse and Exchange (ORE) project that defines Resource Maps (ReMs) for describing aggregations of web resources. These aggregations...
Terry L. Harrison, Michael L. Nelson, Mohammad Zubair
Though the Open Archive Initiative Protocol for Metadata Harvesting (OAI-PMH) is becoming the de facto standard for digital libraries, some of its predecessors are still in use. Although a limited...
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying...
(NASA-TW-I09162) WORLD WIOF WEB IMPLEMENTATION OF THE LANGLEY (2008)
Michael L. Nelson, Gretchen L. Gottlich, David J. Bianco, Michael L. Nelson, Gretchen L. Gottlich
World Wide Web Implementation of the
Correlation of Expert and Search Engine Rankings (2008)
Nelson, Michael L., Klein, Martin, Magudamudi, Manoranjan
In previous research it has been shown that link-based web page metrics can be used to predict experts' assessment of quality. We are interested in a related question: do expert rankings of...
Xiaoming Liu, Johan Bollen, Michael L. Nelson
Visualization eases insight into complex systems such as coauthorship networks. We present an initial deployment of an author navigator application for convenient visual examination of JCDL and LANL...
Approximating Document Frequency with Term Count Values (2008)
Klein, Martin, Nelson, Michael L.
For bounded datasets such as the TREC Web Track (WT10g) the computation of term frequency (TF) and inverse document frequency (IDF) is not difficult. However, when the corpus is the entire web,...
Object Re-Use & Exchange: A Resource-Centric Approach (2008)
Lagoze, Carl, Van De Sompel, Herbert, Nelson, Michael L., Warner, Simeon, Sanderson, Robert, Johnston, Pete
The OAI Object Reuse and Exchange (OAI-ORE) framework recasts the repository-centric notion of digital object to a bounded aggregation of Web resources. In this manner, digital library content is...
Frank Mccown, Amine Benjelloun, Michael L. Nelson
When an individual loses their website and a backup cannot be found, they can download and run Warrick, a webrepository crawler which will recover their lost website by crawling the holdings of the...
in press) mod_oai: An Apache Module for Metadata Harvesting (2008)
Michael L. Nelson, Xiaoming Liu, Terry L. Harrison, Nathan Mcfarland
Abstract. We describe mod_oai, an Apache 2.0 module that implements the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). The OAI-PMH is the de facto standard for metadata exchange...
Archives Initiative Protocol for Metadata Harvesting " (OAI- (2008)
This tutorial is a follow-on to "Introduction to the Open
MRAS: A Multi-Layered Remote Authentication System (2008)
Wilfrid Mirville, Michael L. Nelson, Jamie A. Kobie
Abstract: Accessing computer resources from off campus has been a continuing problem for both students and faculty, and this problem has been exacerbated by the growth of our graduate program. A...
Albert Ball, Donald G. Cole, Michael L. Nelson
Abstract: IPv4 has been in use for several years now, living far beyond any reasonably expected lifetime. Even with various enhancements that have been made available over the years, it has proven...
Abstract OAI and NASA’s Scientific and Technical Information (2008)
Michael L. Nelson, Joanne Rocker, Terry L. Harrison
The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is an evolving protocol and philosophy regarding interoperability for digital libraries (DLs). Previously,...
THE WIDEST PRACTICABLE DISSEMINATION: THE NASA (2008)
Michael L. Nelson, Gretchen L. Gottlich, David J. Bianco, Robert L. Binkley, Yvonne D. Kellogg, Sharon S. Paulson, ...
The National Aeronautics and Space Act of 1958 established NASA and charged it to “provide for the widest practicable and appropriate dissemination of information concerning [...] its activities...
Michael L. Nelson, Johan Bollen
We present the user evaluation of two recommendation server
Accessing NASA Technology with the World Wide Web (2008)
Michael L. Nelson, David J. Bianco
NASA Langley Research Center (LaRC) began using the World Wide Web (WWW) in the summer of 1993, becoming the first NASA installation to provide a Center-wide home page. This coincided with a...
ABSTRACT Augmenting OAI-PMH Repository Holdings Using Search Engine APIs (2008)
Martin Klein, Michael L. Nelson
In this poster, we give the preliminary results of our project to acquire Atmospheric Science Data Center (ASDC) projectrelated web resources, not with focused crawling, but by using the search...
ABSTRACT CRATE: A Simple Model for Self-Describing Web Resources (2008)
Joan A. Smith, Michael L. Nelson
If not for the Internet Archive’s efforts to store periodic snapshots of the web, many sites would not have any preservation prospects at all. The barrier to entry is too high for everyday web...
Optimizing the NASA Technical Report Server (2008)
Michael L. Nelson, Ming-hokng Maa
service, is modified for performance enhancement, greater protocol support, and human interface optimization. Results include: Parallel database queries, significantly decreasing user access times by...
Metadata and Buckets in the Smart Object, Dumb Archive (SODA) Model (2008)
Michael L. Nelson, Kurt Maly, Delwin R. Croom, Steven W. Robbins
We present the Smart Object, Dumb Archive (SODA) model for digital libraries (DLs), and discuss the role of metadata in SODA. The premise of the SODA model is to "push down " many...
If You Harvest arXiv.org, Will They Come? (2008)
Ichael Nelson Johanbollen, Michael L. Nelson, Johan Bollen
We examine which NASA Technical Report Server (NTRS) repositories have received the most downloads during 15 months of operation. In particular, we explore the collection development policy of...
The Workstation Clustering Environment At Nasa Langley Research Center (2008)
Michael Nelson Nasa, Michael L. Nelson, David E. Cordner
This paper introduces the status of and lessons learned from the workstation clustering projects at NASA Langley Research Center: the Borg, a tightly coupled, homogeneous cluster and the Hive, a...
Terry Harrison Michael, Michael L. Nelson, Mohammad Zubair
Though the Open Archive Initiative Protocol for Metadata Harvesting (OAI-PMH) is becoming the defacto standard for digital libraries, some of its predecessors are still in use. Although a limited...
Journal of Government Information (2001), 28(4), pp. 369-394. (2008)
Nasa Langley Research, Michael L. Nelson, Michael L. Nelson
A fundamental task of research organizations is preservation and dissemination of their intellectual output. Historically, this has been accomplished with hard copy formats through a multi-tiered...
Metadata and Buckets in the Smart Object, Dumb Archive (SODA) Model (2007)
Michael L. Nelson, Kurt Maly, Delwin R. Croom, Steven W. Robbins
We present the Smart Object, Dumb Archive (SODA) model for digital libraries (DLs), and discuss the role of metadata in SODA. The premise of the SODA model is to "push down " many...
Michael L. Nelson, Kurt Maly, Mohammad Zubair
Abstract. We present the Smart Object, Dumb Archive (SODA) model for digital libraries (DLs). The SODA model transfers functionality traditionally associated with archives to the archived objects...
The Workstation Clustering Environment At Nasa Langley Research Center (2007)
Michael L. Nelson, David E. Cordner
This paper introduces the status of and lessons learned from the workstation clustering projects at NASA Langley Research Center: the Borg, a tightly coupled, homogeneous cluster and the Hive, a...
1 Determining the Publication Impact of a Digital Library (2007)
Nancy R. Kaplan, Michael L. Nelson
is a digital library of over 1,400 electronic publications authored by NASA Langley Research Center personnel or contractors and has been available in its current World Wide Web (WWW) form since...
A Generic Path Planning Strategy for Autonomous Vehicles (2007)
Richard Fox, Antonio Garcia, Michael L. Nelson
Path planning is a necessary and fundamental component of any autonomous vehicle. The goal is to obtain a path that allows the vehicle to fulfill its mission objectives by ensuring an efficient and...
Ascii American, Michael L. Nelson, Michael L. Nelson, Gretchen L. Gottlich, Gretchen L. Gottlich
An experimental electronic dissemination project, the Langley Technical Report Server (LTRS), has been undertaken to determine the feasibility of delivering Langley technical reports directly to the...
A Generic Path Planning Strategy for Autonomous Vehicles (2007)
Richard Fox, Michael L. Nelson
Path planning is a necessary and fundamental component of any autonomous vehicle. The goal is to obtain a path that allows the vehicle to fulfill its mission objectives by ensuring an efficient and...
independent learning with the conventional classroom approach. The typical Plus Program class meets every other week during the semester. This allows for the maximization of both classroom and...
Arc−An OAI Service Provider for Cross−Archive Searching (2007)
Xiaoming Liu, Kurt Maly, Mohammad Zubair, Michael L. Nelson
The usefulness of the many on−line journals and scientific digital libraries that exist today is limited by the lack of a service that can federate them through a unified interface. The Open...
Web-Based Language Documentation and Description (2007)
Abstract. Within the context of DLs, we are making information objects first-class citizens. We decouple information objects from the systems used for their storage and retrieval, allowing the...
A Bucket Architecture for the Open Video Project (2007)
The Open Video project is a collection of public domain digital video available for research and other purposes. The Open Video collection currently consists of approximately 350 video segments,...
Evaluating Personal Archiving Strategies for Internet-based Information (2007)
Marshall, Catherine C., McCown, Frank, Nelson, Michael L.
Internet-based personal digital belongings present different vulnerabilities than locally stored materials. We use responses to a survey of people who have recovered lost websites, in combination...
Characterization of Search Engine Caches (2007)
McCown, Frank, Nelson, Michael L.
Search engines provide cached copies of indexed content so users will have something to "click on" if the remote resource is temporarily or permanently unavailable. Depending on their proprietary...
Martin Klein, Frank Mccown, Joan A. Smith, Michael L. Nelson
To date, most of the focus regarding digital preservation has been on re-moving copies of the resources to be preserved from the “living web ” and placing them in an archive for controlled...
Joan A. Smith, Michael L. Nelson
– A disorganized free-for-all – Very little metadata – Haphazard additions, deletions, modifications – No preservation strategy
Generating best-effort preservation metadata for web resources at time of dissemination (2007)
Joan A. Smith, Michael L. Nelson
page access, do not provide enough forensic information to enable the long-term preservation of the resources they describe and transport. But what if the originating web server automatically...
Repository Replication Using NNTP and SMTP (2006)
Smith, Joan A., Klein, Martin, Nelson, Michael L.
We present the results of a feasibility study using shared, existing, network-accessible infrastructure for repository replication. We investigate how dissemination of repository contents can be...
D2D: Digital Archive to MPEG-21 DIDL (2006)
Manepalli, Suchitra, Manepalli, Giridhar, Nelson, Michael L.
Digital Archive to MPEG-21 DIDL (D2D) analyzes the contents of the digital archive and produces an MPEG-21 Digital Item Declaration Language (DIDL) encapsulating the analysis results. DIDL is an...
Observed Web Robot Behavior on Decaying Web Subsites (2006)
Smith, Joan A., McCown, Frank, Nelson, Michael L.
We describe the observed crawling patterns of various search engines (including Google, Yahoo and MSN) as they traverse a series of web subsites whose contents decay at predetermined rates. We plot...
Observed Web Robot Behavior on Decaying Web Subsites (2006)
Smith, Joan A., McCown, Frank, Nelson, Michael L.
We describe the observed crawling patterns of various search engines (including Google, Yahoo and MSN) as they traverse a series of web subsites whose contents decay at predetermined rates. We plot...
Efficient, automatic web resource harvesting (2006)
Michael L. Nelson, Joan A. Smith
There are two problems associated with conventional web crawling techniques: a crawler cannot know if all resources at a non-trivial web site have been discovered and crawled (“the counting...
OAI-PMH Architecture for the NASA Langley Research Center Atmospheric Science Data Center (2006)
Churngwei Chu, Walter E. Baskin, Juliet Z. Pao, Michael L. Nelson
Abstract. We present the architectural decisions involved in adding an Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) interface to the NASA Langley Research Center Atmospheric...
Efficient, automatic web resource harvesting (2006)
Michael L. Nelson, Joan A. Smith
There are two problems associated with conventional web crawling techniques: a crawler cannot know if all resources at a non-trivial web site have been discovered and crawled (“the counting...
Lazy preservation: Reconstructing websites by crawling the crawlers (2006)
Frank Mccown, Joan A. Smith, Michael L. Nelson
Backup of websites is often not considered until after a catastrophic event has occurred to either the website or its webmaster. We introduce “lazy preservation ” – digital preservation...
Repository replication using NNTP and SMTP (2006)
Joan A. Smith, Martin Klein, Michael L. Nelson
Abstract. We present the results of a feasibility study using shared, existing, network-accessible infrastructure for repository replication. We utilize the SMTP and NNTP protocols to replicate both...
Michael L. Nelson, Frank Mccown, Joan A. Smith
• “We can’t save everything!” – if not “everything”, then how much? – what does “save ” mean? “Women and Children First” HMS Birkenhead, Cape Danger, 1852 638 passengers 193...
Repository replication using NNTP and SMTP (2006)
Joan A. Smith, Martin Klein, Michael L. Nelson
We present the results of a feasibility study using shared, existing network-accessible infrastructure for repository replication. Our goal is not to “hijack ” other sites ’ storage, but to...
Dynamic Web File Format Transformations with Grace (2005)
Swaney, Daniel S., McCown, Frank, Nelson, Michael L.
Web accessible content stored in obscure, unpopular or obsolete formats represents a significant problem for digital preservation. The file formats that encode web content represent the implicit and...
Reconstructing Websites for the Lazy Webmaster (2005)
McCown, Frank, Smith, Joan A., Nelson, Michael L., Bollen, Johan
Backup or preservation of websites is often not considered until after a catastrophic event has occurred. In the face of complete website loss, "lazy" webmasters or concerned third parties may be...
The Availability and Persistence of Web References in D-Lib Magazine (2005)
McCown, Frank, Chan, Sheffan, Nelson, Michael L., Bollen, Johan
We explore the availability and persistence of URLs cited in articles published in D-Lib Magazine. We extracted 4387 unique URLs referenced in 453 articles published from July 1995 to August 2004....
A Survey of Reverse Engineering and Program Comprehension (2005)
Reverse engineering has been a standard practice in the hardware community for some time. It has only been within the last ten years that reverse engineering, or "program comprehension", has grown...
mod_oai: An Apache Module for Metadata Harvesting (2005)
Nelson, Michael L., Van De Sompel, Herbert, Liu, Xiaoming, Harrison, Terry L., McFarland, Nathan
We describe mod_oai, an Apache 2.0 module that implements the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). OAIPMH is the de facto standard for metadata exchange in digital...
Co-Authorship Networks in the Digital Library Research Community (2005)
Liu, Xiaoming, Bollen, Johan, Nelson, Michael L., Van De Sompel, Herbert
The field of digital libraries (DLs) coalesced in 1994: the first digital library conferences were held that year, awareness of the World Wide Web was accelerating, and the National Science...
What's new from the OAI (2005)
Van De Sompel, Herbert, Warner, Simeon M., Nelson, Michael L.
Presentation about news on OAI-PMH, with an overview on rights and best practices in open archives.
OAI-PMH for Resource Harvesting (2005)
Van De Sompel, Herbert, Nelson, Michael L.
A variety of examples have arisen in which the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) has been used for applications beyond bibliographic metadata interchange. One of...
What's new from the OAI (2005)
Van De Sompel, Herbert, Warner, Simeon M., Nelson, Michael L.
Presentation about news on OAI-PMH, with an overview on rights and best practices in open archives.
OAI-PMH for Resource Harvesting (2005)
Van De Sompel, Herbert, Nelson, Michael L.
A variety of examples have arisen in which the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) has been used for applications beyond bibliographic metadata interchange. One of...
Dynamic web file format transformations with grace (2005)
Daniel S. Swaney, Frank Mccown, Michael L. Nelson
Abstract. Web accessible content stored in obscure, unpopular or obsolete formats represents a significant problem for digital preservation. The file formats that encode web content represent the...
Harvesting Resources with OAI-PMH (2005)
De Sompel, Xiaoming Liu, Michael L. Nelson, Carl Lagoze, Simeon Warner, Terry Harrison, ...
The problem is not that the WWW doesn’t work; it clearly does. The problem is that our expectations have been lowered. more on DL/WWW, from the NSF Post-DL Workshop:
Evaluation of the NSDL and Google for Obtaining Pedagogical Resources (2005)
Frank Mccown, Johan Bollen, Michael L. Nelson
We describe an experiment that measures the pedagogical usefulness of the results returned by the National Science Digital Library (NSDL) and Google. Eleven public school teachers from the state of...
Dynamic Web File Format Transformations with Grace (2005)
Daniel Swaney Frank, Frank Mccown, Michael L. Nelson
Web accessible content stored in obscure, unpopular or obsolete formats represents a significant problem for digital preservation.
Distributed, Real-Time Computation of Community Preferences (2005)
Thomas Lutkenhouse, Michael L. Nelson, Johan Bollen
We describe the integration of smart digital objects with Hebbian learning to create a distributed, real-time, scalable approach to adapting to a community's preferences. We designed an...
Evaluation of the NSDL and Google for (2005)
Obtaining Pedagogical Resources, Frank Mccown, Johan Bollen, Michael L. Nelson
We describe an experiment that measures the pedagogical usefulness of the results returned by the National Science Digital Library (NSDL) and Google. Eleven public school teachers from the state of...
The availability and persistence of web references in D-Lib Magazine (2005)
Frank Mccown, Sheffan Chan, Michael L. Nelson, Johan Bollen
Abstract. We explore the availability and persistence of URLs cited in articles published in D-Lib Magazine. We extracted 4387 unique URLs referenced in 453 articles published from July 1995 to...
Resource harvesting within the OAI-PMH framework (2004)
Sompel, Herbert Van De, Nelson, Michael L., Lagoze, Carl, Warner, Simeon
Motivated by preservation and resource discovery, we examine how digital resources, and not just metadata about resources, can be harvested using the Open Archives Initiative Protocol for Metadata...
Dynamic Linking of Smart Digital Objects Based on User Navigation Patterns (2004)
Elango, Aravind, Bollen, Johan, Nelson, Michael L.
We discuss a methodology to dynamically generate links among digital objects by means of an unsupervised learning mechanism which analyzes user link traversal patterns. We performed an experiment...
The Dienst OAI Gateway: (2003)
Preservation Gateway For, Terry L. Harrison, Michael L. Nelson, Mohammad Zubair
Though the Open Archive Initiative Protocol for Metadata Harvesting (OAI-PMH) is becoming the defacto standard for digital libraries, some of its predecessors are still in use. Although a limited...
A Scalable Architecture for Harvest-Based Digital Libraries - The ODU/Southampton Experiments (2002)
Liu, Xiaoming, Brody, Tim, Harnad, Stevan, Carr, Les, Maly, Kurt, Zubair, Mohammad, ...
This paper discusses the requirements of current and emerging applications based on the Open Archives Initiative (OAI) and emphasizes the need for a common infrastructure to support them. Inspired by...
A Scalable Architecture for Harvest-Based Digital Libraries - The ODU/Southampton Experiments (2002)
Liu, Xiaoming, Brody, Tim, Harnad, Stevan, Carr, Les, Maly, Kurt, Zubair, Mohammad, ...
This paper discusses the requirements of current and emerging applications based on the Open Archives Initiative (OAI) and emphasizes the need for a common infrastructure to support them. Inspired by...
A Scalable Architecture for Harvest-Based Digital Libraries - The ODU/Southampton Experiments (2002)
Liu, Xiaoming, Brody, Tim, Harnad, Stevan, Carr, Les, Maly, Kurt, Zubair, Mohammad, ...
This paper discusses the requirements of current and emerging applications based on the Open Archives Initiative (OAI) and emphasizes the need for a common infrastructure to support them. Inspired by...
A Scalable Architecture for Harvest-Based Digital Libraries - The ODU/Southampton Experiments (2002)
Liu, Xiaoming, Brody, Tim, Harnad, Stevan, Carr, Les, Maly, Kurt, Zubair, Mohammad, ...
This paper discusses the requirements of current and emerging applications based on the Open Archives Initiative (OAI) and emphasizes the need for a common infrastructure to support them. Inspired by...
Service providers: future perspectives (2002)
The author presents a brief introduction of the history of OAI-PMH, a definition of the OAI-PMH data model and relationated interesting services.
Conclusions of the breakout session "OAI services". We identified several areas of focus for future development in OAI services. Chief among these was the idea of a "Value Added Aggregator" (VAA)....
New development in OAI (OAI-PMH2) (2002)
The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is an evolving protocol and philosophy regarding interoperability for digital libraries (DLs). Previously, "distributed...
Service providers: future perspectives (2002)
The author presents a brief introduction of the history of OAI-PMH, a definition of the OAI-PMH data model and relationated interesting services.
Conclusions of the breakout session "OAI services". We identified several areas of focus for future development in OAI services. Chief among these was the idea of a "Value Added Aggregator" (VAA)....
New development in OAI (OAI-PMH2) (2002)
The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is an evolving protocol and philosophy regarding interoperability for digital libraries (DLs). Previously, "distributed...
Joanne Rocker George, George J. Roncaglia, Lynn N. Heimerl, Michael L. Nelson
Interoperability and data-exchange are critical for the survival of government information management programs. E-government initiatives are transforming the way the government interacts with the...
The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) (2002)
Xiaoming Liu, Tim Brody, Stevan Harnad, Les Carr, Kurt Maly, Mohammad Zubair, ...
This paper discusses the requirements of current and emerging applications based on the Open Archives Initiative (OAI) and emphasizes the need for a common infrastructure to support them. Inspired by...
Buckets: Smart Objects for Digital Libraries (2001)
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program Office plays a key part in helping NASA...
Arc: an OAI service provider for cross-archive searching (2001)
Xiaoming Liu, Kurt Maly, Mohammad Zubair, Michael L. Nelson
The usefulness of the many on-line journals and scientific digital libraries that exist today is limited by the lack of a service that can federate them through a unified interface. The Open Archive...
Michael L. Nelson, Brad Argue, Miles Efron, Sheila Denn, Maria Cristina Pattuelli
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program Office plays a key part in helping NASA...
Better interoperability through the Open Archives Initiative (2001)
The Open Archives Initiative (OAI) is an evolving protocol and philosophy regarding interoperability for digital libraries (DLs). Previously, "distributed searching " models were...
A survey of complex object technologies for digital libraries (2001)
Technical Publication Reports, Michael L. Nelson, Brad Argue, Miles Efron, Sheila Denn, Maria Cristina Pattuelli
Many early web-based digital libraries (DLs) had implicit assumptions reflected in their architecture that the unit of focus in the DL (frequently "reports" or "e-prints") would...
NASA/TM-2001-211049 Buckets: Smart Objects for Digital Libraries (2001)
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program Office plays a key part in helping NASA...
The UPS Prototype. An Experimental End-User Service across E-Print Archives (2000)
Sompel, Herbert Van De, Krichel, Thomas, Nelson, Michael L., Hochstenbach, Patrick, Lyapunov, Victor M., Maly, Kurt, ...
A meeting was held in Santa Fe, New Mexico, October 21-22, 1999, to generate discussion and consensus about interoperability of publicly available scholarly information archives. The invitees...
Buckets :--smart objects for digital libraries /--by Michael L. Nelson. (2000)
Thesis (Ph. D.)--Old Dominion University, 2000.
Buckets--[microform] :--smart objects for digital libraries /--by Michael L. Nelson. (2000)
Thesis (Ph. D.)--Old Dominion University, 2000.
Buckets [microform] : smart objects for digital libraries / (2000)
Nelson, Michael L. (Michael Lloyd)
"UMI cat. no.: 9989690"--Container.
Thomas Krichel, Michael L. Nelson, Patrick Hochstenbach, Victor M. Lyapunov, Kurt Maly, ...
creating a cross e-print archive end-user service
Michael L. Nelson, Victor M. Lyapunov, Mohammad Zubair, Xiaoming Liu, Thomas Krichel, ...
The Universal Preprint Service (UPS) Prototype was developed in preparation of the first meeting of the UPS initiative - later renamed the Open Archives initiative - held in Santa Fe, New Mexico...
Buckets: Aggregative, Intelligent Agents for Publishing (1999)
Buckets are an aggregative, intelligent construct for publishing in digital libraries. The goal of research projects is to produce information. This information is often instantiated in several...
ABSTRACT Preserving the Pyramid of STI Using Buckets (1999)
The product of research projects is information. Through the life cycle of a project, information comes from many sources and takes many forms. Traditionally, this body of information is summarized...
Smart Objects, Dumb Archives (1999)
Kurt Maly, Michael L. Nelson, Mohammad Zubair
Currently, there exist a large number of superb digital libraries, all of which are, unfortunately, vertically integrated and all presenting a monolithic interface to their users. Ideally, a user...
A Digital Library for the National Advisory Committee for Aeronautics (1999)
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...
SODA: Smart Objects, Dumb Archives (1999)
Michael L. Nelson, Kurt Maly, Mohammad Zubair
this paper we present implementations of our smart objects, buckets, and our dumb archive (DA). We discuss the status of buckets and DA and how they are used in a variety of DL projects
NASA/TM-1999-209127 A Digital Library for the National Advisory Committee for Aeronautics (1999)
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program Office plays a key part in helping NASA...
A Relational Object-Oriented Management System and an Encapsulated Object Programming System. (1998)
The purpose of the Relational Object-Oriented Management System (ROOMS) is to show that the relational database scheme is a viable approach for storing object-oriented data. ROOMS is designed so that...
An Object-Oriented Design Methodology. (1998)
DePaula, Everton G., Nelson, Michael L.
To date, there is no design methodology that is universally accepted by the object-oriented community. Several such methodologies, however, have been proposed. They are all somewhat similar in their...
DE Paula, Everton G., Nelson, Michael L.
This paper presents considerations about several topics that have a direct influence on data reliability and performance in object oriented database management systems. These topics are: physical...
An Introduction to Object-Oriented Programming. (1998)
Like many new ideas, object oriented programming (OOP) does not yet have a universally accepted definition. Even the terminology of OOP can vary greatly from one system or language to another. This...
Badr, Salah M., Brutzman, Donald P., Nelson, Michael L.
This paper presents an introduction to the basic issues involved in real-time systems. Both real-time operating sys and real-time programming languages are explored. Concurrent programming and...
Object-Oriented Real-Time Computing. (1998)
This paper presents a brief overview of object-oriented programming and real-time systems, followed by an in discussion of object-oriented real-time computing. Examples of object oriented real-time...
Michael L. Nelson, Kurt Maly, Mohammad Zubair
We describe NCSTRL+, a unified, canonical digital library for scientific and technical information (STI). NCSTRL+ is based on the
Creating A Canonical Scientific and Technical Information Classification System for NCSTRL+ (1998)
Melissa Tiffany Computer, Melissa E. Tiffany, Michael L. Nelson
The purpose of this paper is to describe the new subject classification system for the NCSTRL+ project. NCSTRL+ is a canonical digital library (DL) based on the Networked Computer Science Technical...
Buckets: Aggregative, Intelligent Agents for Publishing (1998)
Michael L. Nelson, Kurt Maly, Mohammad Zubair
Buckets are an aggregative, intelligent construct for publishing in digital libraries. The goal of research projects is to produce information. This information is often instantiated in several...
Evolution of Scientific and Technical Information Distribution (1998)
Sandra L. Esler, Ra L. Esler, Michael L. Nelson
servers are not considered. Projects that produce CD-ROMs of STI are not considered either. Our focus is on projects that provide networked delivery of the final product -- a dusty CD-ROM is just as...
Creating Canonical Scientific, Melissa E. Tiffany, Michael L. Nelson
The purpose of this paper is to describe the new subject classification system for the NCSTRL+ project. NCSTRL+ is a canonical digital library (DL) based on the Networked Computer Science Technical...
Buckets Aggregative Intelligent, Michael L. Nelson, Kurt Maly, Mohammad Zubair
Buckets are an aggregative, intelligent construct for publishing in digital libraries. The goal of research projects is to produce information. This information is often instantiated in several...
A Multi-Discipline, Multi-Genre Digital Library for (1998)
Research And Education, Michael L. Nelson, Kurt Maly
We describe NCSTRL+, a unified, canonical digital library for educational and scientific and technical information (STI). NCSTRL+ is based on the Networked Computer Science Technical Report Library...
Evolution of Scientific and Technical Information Distribution (1998)
Sandra Esler Michael, Ra L. Esler, Michael L. Nelson
servers are not considered. Projects that produce CD-ROMs of STI are not considered either. Our focus is on projects that provide networked delivery of the final product -- a dusty CD-ROM is just as...
Michael L. Nelson, Kurt Maly, Mohammad Zubair
We describe NCSTRL+, a unified, canonical digital library for scientific and technical information (STI). NCSTRL+ is based on the
Building multi-discipline, multi-format digital libraries using clusters and buckets / (1997)
Thesis (M.S.)--Old Dominion University, 1997.
Building Multi-Discipline, MultiFormat Digital Libraries Using Clusters and (1997)
Michael L. Nelson, Michael L. Nelson, Michaell Nelson, Co-chairsof Advisorycommittee, Dr. Kurt Maly, ...
Our objectivewas to study the feasibility of extending the Dienst protocol to enable a multi-discipline, multi-format digital library. technologies: cluster functionality and publishing buckets. We...
Building Multi-Discipline, MultiFormat Digital Libraries Using Clusters and (1997)
Michael L. Nelson, Michael L. Nelson, Michael L. Nelson, N. T. Shen
Our objective was to study the feasibility of extending the Dienst protocol to enable a multi-discipline, multi-format digital library. We implemented two new technologies: cluster functionality and...
Buckets, Clusters and Dienst (1997)
Michael Nelson, Michael L. Nelson, Kurt Maly, Kurt Maly, Stewart Shen
In this paper we describe NCSTRL+, a unified, canonical digital library for scientific and technical information (STI). NCSTRL+ is based on the Networked Computer Science Technical Report Library...
Integrating Information Technologies Into Large Organizations (1997)
J. Liebowitz, M. Khosrowpour (eds, Gretchen L. Gottlich, Gretchen L. Gottlich, John M. Meyer, John M. Meyer, ...
This paper describes how information technology tools are currently cutting cost and adding value for NASA Langley internal and external customers. Three components from a larger strategic WWW...
Building Multi-Discipline, Multi-Format Digital Libraries Using Clusters And Buckets (1997)
Mohammad Zubair (member, Michael Nelson, Michael L. Nelson, N. T. Shen
BUILDING MULTI-DISCIPLINE, MULTI-FORMAT DIGITAL LIBRARIES USING CLUSTERS AND BUCKETS Michael L. Nelson Old Dominion University, 1997 Co-Chairs of Advisory Committee: Dr. Kurt Maly Dr. Stewart N. T....
NASA Indexing Benchmarks: Evaluating Text Search Engines (1997)
Sandra L. Esler, Sandra L. Esler, Michael L. Nelson, Michael L. Nelson
this paper, we present the NASA Indexing Benchmarks (NIB) , a simple series of sample data collections and timing utilities to extract performance characteristics of various systems for comparison...
TRSkit: A Simple Digital Library Toolkit (1997)
Michael Nelson, Michael L. Nelson, Sandra L. Esler, Sandra L. Esler
This paper introduces TRSkit, a simple and effective toolkit for building digital libraries on the World Wide Web. The toolkit was developed for the creation of the Langley Technical Report Server...
Lyceum: A Multi-Protocol Digital Library Gateway (1997)
Ming-Hokng Maa, Ming-hokng Maa, Sandra Esler, Sandra L. Esler, Michael Nelson, Michael L. Nelson
Lyceum is a prototype scalable query gateway that provides a logically central interface to multi-protocol and physically distributed, digital libraries of scientific and technical information....
Gretchen L. Gottlich John M. Meyer (1997)
Gretchen L. Gottlich, John M. Meyer, Michael L. Nelson, David J. Bianco, J. Liebowitz, ...
This paper describes how information technology tools are currently cutting cost and adding value for NASA Langley internal and external customers. Three components from a larger strategic WWW...
Michael L. Nelson, Sandra L. Esler, Michael L. Nelson, Sandra L. Esler
This paper introduces TRSkit, a simple and effective toolkit for building digital libraries on the World Wide Web. The toolkit was developed for the creation of the Langley Technical Report Server...
M.L.: “NASA indexing benchmarks: evaluating text search engines (1997)
Sandra L. Esler, Sandra L. Esler, Michael L. Nelson, Michael L. Nelson
The current proliferation of on-line information resources underscores the requirement for the ability to index collections of information and search and retrieve them in a convenient manner. This...
Abstract Buckets, Clusters and Dienst (1997)
Michael L. Nelson, Kurt Maly, Michael L. Nelson, Kurt Maly
In this paper we describe NCSTRL+, a unified, canonical digital library for scientific and technical information
ABSTRACT BUILDING MULTI-DISCIPLINE, MULTI-FORMAT DIGITAL LIBRARIES USING CLUSTERS AND BUCKETS (1997)
Michael L. Nelson, Michael L. Nelson, Michael L. Nelson, N. T. Shen
Our objective was to study the feasibility of extending the Dienst protocol to enable a multi-discipline, multi-format digital library. We implemented two new technologies: cluster functionality and...
Ming-hokng Maa, Sandra L. Esler, Michael L. Nelson, Ming-hokng Maa, Sandra L. Esler, Michael L. Nelson
Lyceum is a prototype scalable query gateway that provides a logically central interface to multi-protocol and physically distributed, digital libraries of scientific and technical information....
A Survey of Reverse Engineering and Program Comprehension (1996)
Reverse engineering has been a standard practice in the hardware community for some time. It has only been within the last ten years that reverse engineering, or "program comprehension,"...
Barriers to Software Reuse and the Projected Impact of World Wide Web on Software Reuse (1996)
Software reuse has received much attention since the concept was introduced in 1968. Software reuse itself is a broad concept that has many levels of meaning, ranging from strict code reuse, to...
Nelson, Michael L., Gottlich, Gretchen L., Bianco, David J., Binkley, Robert L., Kellogg, Yvonne D., Paulson, Sharon S., ...
The National Aeronautics and Space Act of 1958 established NASA and charged it to "provide for the widest practical and appropriate dissemination of information concerning [...] its activities and...
Accessing Databases Through the World Wide Web: Issues and Current Practice (1995)
This paper examines the issues, current practices and trends for the future regarding accessing traditional databases through the World Wide Web (WWW). It is often easy to forget that the WWW has no...
Recent Improvements in the NASA Techincal Report Server (1995)
Ming-Hokng Maa, Michael L. Nelson
The NASA Technical Report Server (NTRS), a World Wide Web report distribution service, is modified to allow: 1) Parallel database queries, significantly decreasing user access times by an average...
World Wide Web Implementation of the (1994)
Michael L. Nelson, Gretchen L. Gottlich, David J. Bianco, Michael L. Nelson, Gretchen L. Gottlich
9/5/94 On January 14, 1993, NASA Langley Research Center (LaRC) made approximately 130 formal, “unclassified, unlimited ” technical reports available via the anonymous FTP Langley Technical...
Donna G. Roper, Mary K. Mccaskill, Scott D. Holl, Joanne L. Walsh, Michael L. Nelson, Susan L. Adkins, ...
3 This publication is available from the following sources: The use of trademarks or names of manufacturers in this report is for accurate reporting and does not constitute an official endorsement,...
World Wide Web Implementation of the Langley Technical Report Server (1994)
David Bianco, Michael Nelson, Michael L. Nelson, Gretchen Gottlich, Gretchen L. Gottlich, Cern Conseil, ...
On January 14, 1993, NASA Langley Research Center (LaRC) made approximately 130 formal, "unclassified, unlimited" technical reports available via the anonymous FTP Langley Technical Report...
A Comparison of Queueing, Cluster and Distributed Computing Systems (1994)
Joseph A. Kaplan, Michael L. Nelson
Using workstations clusters for distributed computing has become popular with the proliferation of inexpensive, powerful workstations. Workstation clusters offer both a cost effective alternative to...
The World Wide Web and Technology Transfer at NASA Langley Research Center (1994)
Michael L. Nelson, David J. Bianco
A PostScript version is also available. NASA Langley Research Center (LaRC) began using the World Wide Web (WWW) in the summer of 1993, becoming the first NASA installation to provide a Center-wide...
A Comparison of Queueing, Cluster and Distributed Computing Systems (1993)
Joseph A. Kaplan, Michael L. Nelson, Nasa Langley, Joseph A. Kaplan, Michael L. Nelson
/ j i t- " o) i' N9_-36932
A Comparison of Queueing, Cluster and Distributed Computing Systems (1993)
Joseph A. Kaplan, Michael L. Nelson
Using workstations clusters for distributed computing has become popular with the proliferation of inexpensive, powerful workstations. Workstation clusters offer both a cost effective alternative to...
Salah M. Badr, Egyptian Army, Ronald B. Byrnes, Michael L. Nelson, Donald P. Brutzman
This paper presents an introduction to the basic issues involved in real-time systems. Both real-time operating systems and real-time programming languages are explored. Concurrent programming and...
Object-oriented database manager for the Low Cost Combat Direction System. (1989)
Ross, Debra L., Nelson, Michael L.
Thesis advisor, Michael L. Nelson.
Thesis (Ph. D.)--University of Central Florida, 1988.
Buckets: smart objects for digital libraries (0000)
The article introduces "buckets," smart objects for a digital library. It is an aggregative, intelligent, object-oriented constructs that contain data, metadata and the methods for accessing both....
Buckets: smart objects for digital libraries
The article introduces "buckets," smart objects for a digital library. It is an aggregative, intelligent, object-oriented constructs that contain data, metadata and the methods for accessing both....