| Maintaining High Availability in Distributed Mobile Systems |
Sep-2009 |
73 pages |
| Authors:
Brad P Boitnott; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
 | Distributed Mobile Systems often require the ability to continue working, even when a major system component fails or there is a fault in the system. In some situations when a distributed mobile system is used, the difference between success and failure could mean the difference between life and death. Therefore, distributed mobile systems that require a high availability must be able to survive faults and resist failures. A user of ... |
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| Cooperative Autonomous Robots for Reconnaissance |
06-Mar-2009 |
9 pages |
| Authors:
Thaddeus A Roppel; AUBURN UNIV AL
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| Collaborating mobile robots equipped with WiFi transceivers are configured as a mobile ad-hoc network. Algorithms are developed to take advantage of the distributed processing capability inherent to multi-agent systems. The focus of this study was to determine the optimal amount of communication which allows the robots to share a sufficiently detailed global map, while keeping their processing time and energy usage to a minimum. A hardware testbed is described, which ... |
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| Frameworks and Tools for High-Confidence Design of Adaptive, Distributed Embedded Control Systems. Multi-University Research Initiative on High-Confidence Design for Distributed Embedded Systems |
Jan-2009 |
22 pages |
| Authors:
Edmund Clarke; Edward Lee; Bruce Krogh; Stephen Boyd; J Sztipanovits; G Karsai; C Tomlin; S Sastry; VANDERBILT UNIV NASHVILLE TN INST FOR SOFTWARE INTEGRATED SYSTEMS
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| This project aims to develop a comprehensive approach to the model-based design of high-confidence distributed embedded systems. We will take advantage and fully leverage a shared theoretical foundation and technology infrastructure in four focus areas: hybrid and embedded systems theory, model-based software design, composable tool architectures and experimental testbeds. The objectives of our research in the focus areas are the following: (1) Develop theory of deep composition of hybrid systems ... |
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| Architecting a Net-Centric Operations System of Systems for Multi-Domain Awareness |
01-Sep-2008 |
103 pages |
| Authors:
Keith L Ruegger; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Maritime domain awareness (MDA) entails knowing what is happening in the oceans and waterways that could affect the security or environment of the United States. With a focus on potential attack vessels (PAV) as threats in the maritime domain, a multidomain system of systems (SoS) is needed to exploit and integrate information from multiple sources, including sensors, databases, and intelligence, to provide reconnaissance, surveillance, and information used in the formulation ... |
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| Mathematical Frameworks for Diagnostics, Prognostics and Condition Based Maintenance Problems |
15-Aug-2008 |
189 pages |
| Authors:
Andrew Scott; Kaveh Heidary; ALABAMA A AND M UNIV NORMAL OFFICE FOR RESEARCH AND DEVELOPMENT
|
| This report documents the theoretical and computational investigation of statistical pattern recognition techniques and Bayesian Networks (BN). The application of statistical pattern recognition methodology and Bayesian Networks to automatic fault diagnostics, fault prognostics, and condition based maintenance (CBM) is explored. The theory of Margin-Setting, a new pattern recognition method developed by researchers at Alabama A&M University, is documented and its applicability to problems of interest to Army is investigated. Extensive ... |
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| Using Grid Computing within the Department of Defense |
24-Jun-2008 |
19 pages |
| Authors:
Peter Garretson; Richard Kundiger; DEFENSE CONTRACT MANAGEMENT AGENCY ALEXANDRIA VA
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| The Department of Defense has massive amounts of data that require analysis. Purchase and maintenance of supercomputers to process this information, or leasing of supercomputer resources, is very expensive. DoD already has a supercomputer available to it via distributed or grid computing by making use of the millions of PCs within the department. Using CPU and memory scavenging agents DoD has the potential to harness over 70 Petaflops of computer ... |
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| Tempo: A Toolkit for the Timed Input/Output Automata Formalism |
30 JAN 2008 |
9 pages |
| Authors:
Nancy A. Lynch; Alexander A. Shvartsman; VEROMODO INC BROOKLINE MA
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| Report developed under STTR contract for topic AFO4-T023. This Phase II project developed an integrated development environment, called Tempo, for specifying, analyzing, and verifying complex distributed system designs. This includes a modeling language, a graphical user interface, and computational support tools. This modeling and analysis framework provides an integrated suite of tools and methods. In more detail, this project developed: (a) a formal modeling language, called Tempo, based on the ... |
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| Implementation of Discontinuous Galerkin Methods for the Level Set Equation on Unstructured Meshes |
01-Jan-2008 |
15 pages |
| Authors:
Matthew W Farthing; Christopher E Kees; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS INFORMATION TECHNOLOGY LAB
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| Level set methods are often used to capture interface behavior in two-phase, incompressible flow models. While level set techniques for structured computational grids have been widely investigated, approaches for unstructured meshes are less mature. This report details the formulation and implementation of a discontinuous Galerkin-based approach that is suitable for unstructured meshes and offers potential gains in accuracy and efficiency over more traditional level set techniques. |
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| Benchmarks for Evaluation of Distributed Denial of Service (DDOS) |
JAN 2008 |
12 pages |
| Authors:
Jelena Mirkovic; DELAWARE UNIV NEWARK
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| The main goal of our work was to develop the benchmark suite for evaluation of defenses against distributed denial-of-service (DDoS) attacks. The desired features of the benchmark suite were the following: 1. Realistic topologies, legitimate and attack traffic are represented in the suite 2. A wide variety of attack variants is present in the suite 3. Benchmarks can be used by novice experiments easily 4. There is a common, intuitive ... |
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| Localization in Self-Healing Autonomous Sensor Networks (SASNet): Studies on Cooperative Localization of Sensor Nodes using Distributed Maps |
JAN 2008 |
|
| Authors:
Li Li; DEFENCE RESEARCH AND DEVELOPMENT CANADA OTTAWA (ONTARIO)
|
 | The Self-healing Autonomous Sensing Network (SASNet) presents an advanced Wireless Sensor Network (WSN) that aims to enhance the effectiveness of mission operation in the contemporary military environment, by providing relevant and accurate situational awareness information. In order to achieve this objective, precise location information is required in SASNet. We present the studies on cooperative localization algorithms for wireless sensor nodes. We have taken the cooperative localization approach which can often ... |
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| Replication in Mobile Environments |
01-Dec-2007 |
11 pages |
| Authors:
Heinz Fassbender; FGAN-FKIE WACHTBERG (GERMANY)
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| Robust Dimension Reduction, Fusion Frames, and Grassmannian Packings |
13 SEP 2007 |
23 pages |
| Authors:
Gitta Kutyniok; Ali Pezeshki; Robert Calderbank; Taotao Liu; PRINCETON UNIV NJ PROGRAM IN APPLIED AND COMPUTATIONAL MATHEMATICS
|
| We consider estimating a random vector from its noisy projections onto low-dimensional subspaces constituting a fusion frame. A fusion frame is a collection of subspaces, for which the sum of the projection operators onto the subspaces is bounded below and above by constant multiples of the identity operator. We first determine the minimum mean-squared error (MSE) in linearly estimating the random vector of interest from its fusion frame projections, in ... |
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| Three-Dimensional Nanobiocomputing Architectures With Neuronal Hypercells |
JUN 2007 |
51 pages |
| Authors:
Sergey Lyshevski; Vlad Shmerko; Svetlana Yanushkevich; Marina Lyshevski; MICROSYSTEMS AND NANOTECHNOLOGIES WEBSTER NY
|
| Microsystems and Nanotechnologies investigated a novel 3D3 (Hardware Software Nanotechnology) technology to design super-high performance computing and processing platforms utilizing molecular hardware within an enabling organization and architecture. The design technology is based on utilizing a three-fold solution: (1) Innovative hardware - 3D-topology molecular hardware (device module- system) within enabling organization/architecture solutions utilizing molecular integrated circuits (MICs); (2) Novel software - computer-aided-design (CAD) tools supported by new synthesis and design ... |
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| Voluntary Aviation Safety Information-Sharing Process: Preliminary Audit of Distributed FOQA and ASAP Archives Against Industry Statement of Requirements |
APR 2007 |
14 pages |
| Authors:
Thomas R. Chidester; FEDERAL AVIATION ADMINISTRATION OKLAHOMA CITY OK CIVIL AEROMEDICAL INST
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| The Voluntary Aviation Safety Information-Sharing Process (VASIP) is designed to provide a means for the commercial aviation industry and the Federal Aviation Administration (FAA) to collect, share safety-related information, and to use that information to proactively identify, analyze, and correct safety issues that affect commercial aviation. The key to VASIP is the development of a technical process to extract de-identified safety data from any participating airline Flight Operations Quality Assurance ... |
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| Fundamentals of Combinatorial Optimization and Algorithm Design: Report for April 1 2006-March 31 2007 |
MAR 2007 |
14 pages |
| Authors:
Bruce Shepherd; Matthew Andrews; Chandra Chekuri; Gordon Wilfong; Lisa Zhang; LUCENT TECHNOLOGIES INC MURRAY HILL NJ
|
| The main research output this year included work on degree-constrained network flows which was accepted by STOC 2007. Shepherd will give a plenary talk on this topic at CANADAM. Lucent has also applied for a patent based on this work, Work was also done on protected buy-at-bulk network design problems by Antonakopoulos, Chekuri Shepherd, and Zhang resulting in a manuscript, April 2007. Work was done by Andrews and Zhang on ... |
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| IEEE 1588: An Update on the Standard and Its Application |
Jan-2007 |
20 pages |
| Authors:
John C Eidson; AGILENT TECHNOLOGIES INC SANTA CLARA CA
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| Since the publication of version 1 of IEEE 1588 in November 2002, there has been increasing interest in and development of the technology. The standard has been adopted by a number of trade groups and is referenced in several other standards. The 1588 standard is currently being revised to include provisions for new application areas and to improve the quality of synchronization. This paper will present the technical issues under ... |
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| Characterization and Application of Four-Layer Semiconductor Structures in Pulse Mode Operation |
SEP 2006 |
89 pages |
| Authors:
Antonio P. Matos; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The characteristics and application of a thyristor (a four-layer semiconductor structure) in a pulse generating circuit are explored. A thyristor device was used to create a pulse generating circuit and the pulse interval duration of this circuit was experimentally measured. The pulse interval duration was determined to be characterized by a Poisson Point Process distribution that is dependent on both temperature and applied voltage bias. The adjustable aperiodicity of the ... |
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| The Value Proposition for Fractionated Space Architectures |
Sep-2006 |
23 pages |
| Authors:
Owen Brown; Paul Eremenko; DEFENSE ADVANCED RESEARCH PROJECTS AGENCY ARLINGTON VA
|
| The complexity of a spacecraft, as with any other engineering system, is driven by the twin objectives of delivering a particular capability and of doing so robustly in the face of uncertainty. Whereas the intrinsic difficulty of the underlying mission minimally bounds the complexity of the engineering system needed to effect it, in reality such a minimalist system would be of little practical utility; it is not enough to deliver ... |
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| Development of a Simulation Model for P Systems With Active Membranes |
JUL 2006 |
21 pages |
| Authors:
Digen Das; STATE UNIV OF NEW YORK AT UTICA
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| Membrane Computing (MC) is a branch of Natural Computing, which abstracts from the structure and the functioning of living Cells. The concept was introduced by Gheorghe Paun of the Romanian Academy, Romania, in the late nineties (14, 15). Membrane computing models are commonly known as P (Priority) Systems. These systems perform distributed parallel computing, processing multi-sets of objects synchronously, in compartments delimited by a membrane structure. This report describes a ... |
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| Increasing Intrusion Tolerance via Scalable Redundancy |
JUL 2006 |
83 pages |
| Authors:
Michael K. Reiter; Gregory R. Ganger; CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| This final technical report presents a novel protocol to achieve invariability of nested method invocations. This protocol tolerates Byzantine faulty clients, as is necessary when methods are invoked from other distributed objects that themselves must withstand Byzantine faults. This final report further presents a detail of this protocol, an argument about its correctness and a description of its implementation and performance in a distributed object system. |
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| Privacy-Preserving Distributed Information Sharing |
JUL 2006 |
95 pages |
| Authors:
Lea Kissner; CARNEGIE-MELLON UNIV PITTSBURGH PA SCHOOL OF COMPUTER SCIENCE
|
| In many important applications, a collection of mutually distrustful parties must share information, without compromising their privacy. Currently, these applications are often performed by using some form of a trusted third party (TTP); this TTP receives all players inputs, computes the desired function, and returns the result. However, the level of trust that must be placed in such a TTP is often inadvisable, undesirable, or even illegal. In order to ... |
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| Wireless Sensor Network Applications for the Combat Air Forces |
13 JUN 2006 |
94 pages |
| Authors:
John R. Melloy; AIR FORCE INST OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The main objective of this research is to examine the capabilities and limitations of wireless sensor networks with a focus on applications in an operational Air Force setting. The topography of such networks can be varied to suit applications across the spectrum of military operations. Sensor networks have certain inherent advantages, such as scalability, inconspicuousness, self-healing capability, and deployability. Possible uses include perimeter monitoring, mine field detection, aircraft health, search ... |
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| Three-Dimensional Nanobiocomputing Architectures with aleph-Hypercells: Revolutionary Super-High-Performance Computing Platform |
MAY 2006 |
34 pages |
| Authors:
Sergey Lyshevski; Vlad Shmerko; Svetlana Yanushkevich; Marina Lyshevski; MICROSYSTEMS AND NANOTECHNOLOGIES WEBSTER NY
|
| Microsystems and Nanotechnologies developed a revolutionary 3D3 (Hardware-Software-Nanotechnology) technology to design three-dimensional (3D) nanobiocomputing architectures and Integrated Circuits (ICs). Our technology was based on the design of 3D computing architectures utilizing a threefold solution: (1) innovative hardware (device/module/system-level and 3D ICs); (2) novel software - Computer Aided Design (CAD) supported by new synthesis and design methods; and (3) enabling nanotechnology. The solution and innovations developed ensure information processing pre-eminence and ... |
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| Open Technology Development: Roadmap Plan |
APR 2006 |
80 pages |
| Authors:
J. C. Herz; Mark Lucas; John Scott; DEPUTY UNDER SECRETARY OF DEFENSE WASHINGTON DC ADVANCE SYSTEMS AND CONCEPTS
|
| What is Open Technology Development? Open Technology Development refers to a number of practices for development and implementation of current and next-generation software. These changes and paradigm shifts are enabled by the Internet and related technologies, which enable distributed groups of programmers to collaboratively develop and manage code libraries in a decentralized fashion. The key elements of this approach are: 1. Open Standards and Interfaces; 2. Open Source Software and ... |
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| The Legion Support for Advanced Parameter-Space Studies on a Grid |
2006 |
17 pages |
| Authors:
Anand Natrajan; Marty A. Humphrey; Andrew S. Grimshaw; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF COMPUTER SCIENCE
|
| Parameter-space studies involve running a single application several times with different parameter sets. Since the jobs are mutually independent, many computing resources can be recruited to conduct an entire study in a distributed manner. Parameter-space studies are attractive applications for grids, which are networked collections of computing and other resources. Legion is a grid infrastructure that facilitates the secure and easy use of heterogeneous, geographically-distributed resources by providing the illusion ... |
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| Support for Extensibility and Site Autonomy in the Legion Grid System Object Model |
2006 |
21 pages |
| Authors:
Michael J. Lewis; Adam J. Ferrari; Marty A. Humphrey; John F. Karpovich; Mark M. Morgan; Anand Natrajan; Anh Nguyen-Tuong; Glenn S. Wasson; Andrew S. Grimshaw; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF COMPUTER SCIENCE
|
| Grid computing is the use of large collections of heterogeneous, distributed resources (including machines, databases, devices, and users) to support large scale computations and wide-area data access. The Legion system is an implementation of a software architecture for grid computing. The basic philosophy underlying this architecture is the presentation of all grid resources as components of a single, seamless, virtual machine. Legion's architecture was designed to address the challenges of ... |
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| Accountability and Control of Process Creation in Metasystems |
2006 |
13 pages |
| Authors:
Marty Humphrey; Frederick Knabe; Adam Ferrari; Andrew Grimshaw; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF COMPUTER SCIENCE
|
| The distinguishing feature of a metasystem is middleware that facilitates viewing a collection of large, distributed, heterogeneous resources as a single virtual machine, where each user of the metasystem is identified by a unique metasystem-level identity. The physical resources of the metasystem can exist in multiple administrative domains, each with different local security requirements and authentication mechanisms (e.g., Kerberos, public-key). The problem this paper addresses is how to map the ... |
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| Security Policy Reconciliation in Distributed Computing Environments |
2006 |
11 pages |
| Authors:
Hao Wang; Somesh Jha; Miron Livny; Patrick D. McDaniel; WISCONSIN UNIV-MADISON DEPT OF COMPUTER SCIENCES
|
| A major hurdle in sharing resources between organizations is heterogeneity. Therefore, in order for two organizations to collaborate their policies have to be resolved. The process of resolving different policies is known as policy reconciliation, which in general is an intractable problem. This paper addresses policy reconciliation in the context of security. We present a formal framework and hierarchical representation for security policies. Our hierarchical representation exposes the structure of ... |
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| Capacity and Capability Computing using Legion |
2006 |
11 pages |
| Authors:
Anand Natrajan; Marty Humphrey; Andrew Grimshaw; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF COMPUTER SCIENCE
|
| Computational Scientists often cannot easily access the large amounts of resources their applications require. Legion is a collection of software services that facilitate the secure and easy use of local and non-local resources by providing the illusion of a single virtual machine from heterogeneous, geographically-distributed resources. This paper describes the newest additions to Legion that enable high-performance (capacity) computing as well as secure, fault-tolerant and collaborative (capability) computing. |
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| Fault Tolerance via Replication in Coarse Grain Data-Flow |
2006 |
17 pages |
| Authors:
Anh Nguyen-Tuong; Andrew S. Grimshaw; John F. Karpovich; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF COMPUTER SCIENCE
|
| Recent advances in network technology promise to make gigabit-per-second bandwidth between remote hosts a reality in the near future. This increase in bandwidth paves the way for increased exploitation of distributed computing resources. Coupled with advances in distributed memory parallel compiler technology, there is strong reason to believe that wide-area distributed parallel processing will be an increasingly popular and important programming paradigm. Parallelizing and distributing program sub-tasks has the potential ... |
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| From Legion to Avaki: The Persistence of Vision |
2006 |
31 pages |
| Authors:
Andrew S. Grimshaw; Anand Natrajan; Marty A. Humphrey; Michael J. Lewis; Anh Nguyen-Tuong; John F. Karpovich; Mark M. Morgan; Adam J. Ferrari; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF COMPUTER SCIENCE
|
| Grids have metamorphosed from academic projects to commercial ventures. Avaki, a leading commercial vendor of Grids, has its roots in Legion, a Grid project at the University of Virginia begun in 1993. In this chapter, we present fundamental challenges and requirements for Grid architectures that we believe are universal, our architectural philosophy in addressing those requirements, an overview of Legion as used in production systems and a synopsis of the ... |
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| Protocol, Engineering Research Center, University of California, Santa Barbara |
DEC 2005 |
67 pages |
| Authors:
P. M. Melliar-Smith; CALIFORNIA UNIV SANTA BARBARA
|
| The scientific goal of this AFOSR MURI effort is to advance the state-of-the-art in design, implementation, and evaluation of network protocols to meet the needs of complex distributed systems. More specifically, the research has focused on: (1) the design and evaluation of protocols for real-time performance, fault tolerance and security, as well as protocols for mobile wireless environments; (2) the design and implementation of analysis/simulation tools to validate/evaluate protocols; and ... |
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| Trustworthy Integration: Challenges for the Practitioner |
OCT 2005 |
|
| Authors:
Robert J. Ellison; CARNEGIE-MELLON UNIV PITTSBURGH PA SOFTWARE ENGINEERING INST
|
| The design of trustworthy networked information systems presents profound challenges for system architecture and project planning. While there has been significant research on this topic, there is still limited understanding of the issues. The software development tools, infrastructure components, and standardized interfaces now available encourage the deployment of networked systems and make that lack of understanding an increasing liability. The objective of this note is to summarize the technical issues ... |
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| Design of New Materials Using Computational Chemistry and Materials Science (CHSSI) |
28 SEP 2005 |
17 pages |
| Authors:
Mark S. Gordon; IOWA STATE UNIV AMES
|
| The objective of this work was to develop a broad array of methods for electronic structure theory, with special emphasis on improved parallel codes. A new highly scalable code for frozen core second order perturbation theory (MP2) gradients for closed and open shell molecules has been developed and is on-line for general use at several IBM SP2 and Cray T3E systems. The key element of this approach is our distributed ... |
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| Sharing Information among Various Organizations in Relief Efforts |
SEP 2005 |
85 pages |
| Authors:
Gurkan Costur; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Today, information sharing is critical to almost every institution and organization. There is no more pressing need for information sharing than during an international crisis, during which multi-national, military-civilian coordination is needed. Successful information technology implementation for international crises could be increased by analyzing prior relief efforts. The purpose of this thesis is to explore the role of information technology in enabling the sharing of actionable information among various organizations ... |
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| Exchange-Based Incentive Mechanisms for Peer-to-Peer File Sharing |
24 AUG 2005 |
11 pages |
| Authors:
Kostas G. Anagnostakis; Michael B. Greenwald; PENNSYLVANIA UNIV PHILADELPHIA DEPT OFCOMPUTER AND INFORMATION SCIENCE
|
| Performance of peer-to-peer resource sharing networks depends upon the level of cooperation of the participants. To date, cash-based systems have seemed too complex, while lighter-weight credit mechanisms have not provided strong incentives. We propose exchange-based mechanisms for providing incentives for cooperation in peer-to-peer file sharing networks. Peers give higher service priority to requests from peers that can provide a simultaneous and symmetric service in return. We generalize this approach to ... |
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| Reflections on Active Networking |
24 AUG 2005 |
28 pages |
| Authors:
Jonathan M. Smith; PENNSYLVANIA UNIV PHILADELPHIA DEPT OFCOMPUTER AND INFORMATION SCIENCE
|
| Interactions among telecommunications networks, computers, and other peripheral devices have been of interest since the earliest distributed computing systems. A key architectural question is the location (and nature) of programmability. One perspective, that examined in this paper, is that network elements should be as programmable as possible, in order to build the most flexible distributed computing systems. This paper presents my personal view of the history of programmable networking over ... |
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| Agent Semantic Communication Services |
17 AUG 2005 |
33 pages |
| Authors:
John Li; Allan Terry; TEKNOWLEDGE CORP PALO ALTO CA
|
| Agent Semantic Communication Services (ASCS) addressed a fundamental issue in the adoption and use of semantic technologies. It provided a semantic search engine with Web-scale architecture. Semantic search answers a logical query by return bindings for the unbound variables in the query. In information retrieval approaches such as Google, a large number of URIs are returned that contain one or more of the search keywords, ranked by an estimate of ... |
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| Quality of Security Service: Adaptive Security |
17 AUG 2005 |
17 pages |
| Authors:
Timothy E. Levin; Cynthia E. Irvine; Evdoxia Spyropoulou; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The premise of Quality of Security Service is that system and network management functions can be more effective if variable levels of security services and requirements can be presented to users or network tasks. In this approach, the "level of service" must be within an acceptable range, and can indicate degrees of security with respect to various aspects of assurance, mechanistic strength, administrative diligence, etc. These ranges result in additional ... |
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| Coping with Overload on the Network Time Protocol Public Servers |
17 AUG 2005 |
13 pages |
| Authors:
David Mills; Judah Levine; Richard Schmidt; David Plonka; DELAWARE UNIV NEWARK
|
| The public time servers operated by USNO and NIST provide time synchronization, directly or indirectly, to millions of Internet computers today. The load in the form of processor cycles and network traffic has doubled in the last 2 years and could eventually overwhelm the servers and the network infrastructure unless something is done about it. While both USNO and NIST operate multiple servers across the US, the aggregate load is ... |
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| Distributed Signal Processing in Wireless Sensor Networks |
AUG 2005 |
58 pages |
| Authors:
Cauligi S. Raghavendra; Viktor K. Prasanna; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF ELECTRICAL ENGINEERING
|
| Sensor nodes forming a network and using wireless communications are highly useful in a variety of applications and scenarios. Such a wireless sensor network can be used to collect and process information from the field in military surveillance, building security, in harsh physical environments, and for scientific investigations on other planets. Sensor networks can perform distributed computations in the network for a number of interesting applications, including signal and image ... |
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| Encapsulation Application Research of ArcSDE Access Interface in .Net Environment |
25 JUL 2005 |
|
| Authors:
Min Feng; Qingsheng Shang; Jianwen Guo; Yingchun Ge; CHINESE ACADEMY OF SCIENCES LANZHOU (CHINA) COLD AND ARID REGIONS ENVIRONMENTAL AND ENG RESEARCH INST
|
| The GIS and Digital Roadbed System of the Qinghai-Tibet Railroad is developed in the .Net environment and designed to store and to manage the information along the Qinghai-Tibet railroad which is 1118km long and is constructed in the regions more than 4000m high Spatial data Management plays a very important role in this GIS, and ArcSDE was selected to implement the management of mass spatial data. How to connect ArcSDE ... |
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| New Metrics and MOEs for Unmanned, Distributed Forces |
23 JUN 2005 |
28 pages |
| Authors:
Jeffrey R. Cares; ALIDADE INC NEWPORT RI
|
| INTRODUCTION: (1) Existing models focus on attrition and can not adequately represent proposed Information Age combat processes. (2) Three views of a Distributed Networked System: * Structure -- What are the links, nodes, boundaries and rules for connection? * Dynamics -- Do actual or potential networked effects exist? * Evolution -- What trajectories do the descriptive characteristics take? Do they converge, diverge or cycle? (3) These three perspectives are used ... |
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| LCS Study - Design Principles of Distributed, Networked Forces |
23 JUN 2005 |
17 pages |
| Authors:
Jeffrey R. Cares; ALIDADE INC NEWPORT RI
|
| MAIN POINTS: (1) "Complex Networks" have exploitable properties; (2) These exploitable properties have military relevance; (3) There are significant distributed, networked force design implications of these properties; (4) A more satisfying theory of Distributed, Networked Forces (than currently exists for NCW/NCO, etc.) is emerging from this research. |
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| Decision Analysis, Distributed Forces and Complex Causality |
23 JUN 2005 |
13 pages |
| Authors:
Jeffrey R. Cares; ALIDADE INC NEWPORT RI
|
| INTRODUCTION: (1) Distributed, networked systems are "complex systems"; (2) Complex Causality and distributed, networked systems -- Even if desired effects (e.g., performance goals) are provided, methods to achieve them may be elusive -- Control will be questionable; (3) Complex Causality and NCW/IAW/MOEs -- We cannot be sure that our measures actually measure effectiveness, because we cannot trace improvements in inputs to improvements in outcomes. |
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| Modeling Adaptive Middleware and Its Applications to Military Tactical Datalinks |
JUN 2005 |
85 pages |
| Authors:
Jason T. Lawson; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Open systems solutions and techniques have become the de facto standard for achieving interoperability between disparate, large-scale, legacy software systems. A key technology among open systems solutions and techniques is middleware. Middleware, in general, is used to isolate applications from dependencies introduced by hardware, operating systems, and other low-level aspects of system architectures. While middleware approaches are or will be integrated into operational military systems, many open questions exist about ... |
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| Grid Technology and Information Management for Command and Control |
JUN 2005 |
34 pages |
| Authors:
Scott E. Spetka; George O. Ramseyer; Richard W. Linderman; ITT INDUSTRIES UTICA NY ADVANCED ENGINEERING AND SCIENCES
|
| Over the next few years, the Command and Control (C2) community will face increased demands for processing data as increasing numbers of data sources are deployed. It is expected that skilled analysts will continue to play an important role in gleaning useful information from imagery and other sources that are by and large produced as digital multimedia. Using current information systems would require significant increases in the numbers of analysts ... |
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| QoS-UniFrame: A Petri Net-based Modeling Approach to Assure QoS Requirements of Distributed Real-time and Embedded Systems |
01-Apr-2005 |
9 pages |
| Authors:
Mikhail Auguston; Barrett R Bryant; Rajeev R Raje; Andrew M Olson; Jeffrey G Gray; Shih-Hsi Liu; ALABAMA UNIV IN BIRMINGHAM DEPT OF COMPUTER AND INFORMATION SCIENCES
|
| Assuring quality of service (QoS) requirements is critical when assembling a distributed real-time and embedded (DRE) system from a repository of existing components. This paper presents a two-level approach for assuring satisfaction of QoS requirements in the context of a reduced design space for DRE systems. A dynamic and parallel approach is introduced to prune off the infeasible design spaces at the first level. Evolutionary algorithms cooperating with a domain-specific ... |
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| Proceedings of the High Performance Embedded Computing (HPEC) Workshop (8th) Held in Lexington, MA on 28-30 September 2004. Volume I (CD-ROM) |
02 MAR 2005 |
1 pages |
| Authors:
Jeremy Kepner; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
|
| ELECTRONIC FILE CHARACTERISTICS: 166 files; Adobe Acrobat (.PDF). PHYSICAL DESCRIPTION: 1 CD-ROM; 4 3/4 in.; 107 MB. SYSTEMS DETAIL NOTE: Adobe Acrobat Reader is included on disc. ABSTRACT: The High-Performance Embedded Computing (HPEC) technical committee announced the eighth annual HPEC Workshop held in September 2004 at MIT Lincoln Laboratory in Lexington, MA. The Workshop gave U.S. government-funded researchers from academia, industry, and government, working in this important area, an opportunity ... |
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| Collectives for Multiple Resource Job Scheduling Across Heterogeneous Servers |
14 JAN 2005 |
2 pages |
| Authors:
Kagan Tumer; John Lawson; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER
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| Efficient management of large-scale, distributed data storage and processing systems is a major challenge for many computational applications. Many of these systems are characterized by multi resource tasks processed across a heterogeneous network. Conventional approaches, such as load balancing, work well for centralized, single resource problems, but breakdown in the more general case. In addition, most approaches are often based on heuristics which do not directly attempt to optimize the ... |
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DISTRIBUTED DATA PROCESSING
