Art Vandenberg

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Directories provide a well-defined general mechanism for describing organizational resources such as the resources of the Internet2 higher education research community and the Grid community. Lightweight directory access protocol directory services enable data sharing by defining the information’s metadata (schema) and access protocol. Interoperability of(More)
Modeling peer-to-peer (P2P) networks is a challenge for P2P researchers. In this paper, we provide a detailed analysis of large-scale hybrid P2P overlay network topology, using Gnutella as a case study. First, we re-examine the power-law distributions of the Gnutella network discovered by previous researchers. Our results show that the current Gnutella(More)
Semantic heterogeneity is becoming increasingly prominent in bioinformatics domains that deal with constantly expanding, dynamic, often very large, datasets from various distributed sources. Metadata is the key component for effective information integration. Traditional approaches for reconciling semantic heterogeneity use standards or mediation-based(More)
With the ever-increasing wireless/wired data applications recently, considerable efforts have focused on the design of distributed explicit rate flow control schemes for multi-inputmulti-output service. This paper describes two novel wireless/wired multipoint-to-multipoint multicast flow control schemes, which are based on the distributed self-tuning(More)
Directory services provide a mechanism to describe internal resources that can be dynamically discovered and used, and are increasingly being adopted by organizations. Despite being in an era of extensive interorganizational collaboration, relatively little attention has been given to extending directory services across organizational boundaries. In(More)
The Industrial Ethernet is promising for the implementation of a Cloud Computing based control system. However, numerous standard organizations and vendors have developed various Industrial Ethernets to satisfy the real-time requirements of field devices. This paper presents a real-time reconfigurable protocol stack to cope with this challenge, by(More)
• Cloud compuJng is a broad range of concepts and the disJncJon between “consumer of” and “provider of” cloud‐based resources may be important in creaJng a larger ecosystem of cloud compuJng. • Several IBM Cloud Academy members have outlined a definiJon and framework for cloud compuJng services and have draSed a cloud assessment survey for senior(More)