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Systems, Applications and Technology Conference, 2007. LISAT 2007. IEEE Long Island

Date 4-4 May 2007

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Displaying Results 1 - 25 of 27
  • [Front cover]

    Publication Year: 2007 , Page(s): 1
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    Freely Available from IEEE
  • [Title page]

    Publication Year: 2007 , Page(s): 1
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    Freely Available from IEEE
  • [Commentary]

    Publication Year: 2007 , Page(s): 1
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    Freely Available from IEEE
  • Table of contents

    Publication Year: 2007 , Page(s): 3 - 5
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    Freely Available from IEEE
  • [Society related material]

    Publication Year: 2007 , Page(s): 7 - 27
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    Freely Available from IEEE
  • The Advanced Hawkeye as a System of Systems?

    Publication Year: 2007 , Page(s): 1 - 12
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3578 KB) |  | HTML iconHTML  

    There are differences between a traditional system of components, which requires its parts to be fully defined and unalterable throughout its lifecycle, and a system of systems (SoS), which typically displays emergent characteristics over time and has the potential to evolve over its lifetime. This paper will focus on identifying the differences, in both structure and behavior, between a system of... View full abstract»

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  • Intelligent Transportation Systems Provide Operational Benefits for New York Metropolitan Area Roadways: A Systems Engineering Approach

    Publication Year: 2007 , Page(s): 1 - 8
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1635 KB) |  | HTML iconHTML  

    The New York metropolitan area experiences considerable traffic congestion. However, within the New York metropolitan area right of way is limited and building additional roadways to alleviate congestion is no longer an option. Therefore, to alleviate congestion the New York State Department of Transportation (NYSDOT) has sought out congestion management strategies that do not require the construc... View full abstract»

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  • Subject: Taking Software Requirements from Hearsay to Analysis

    Publication Year: 2007 , Page(s): 1 - 4
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  • Carrier Frequency Offset Mitigation in a Proposed MIMO OFDM System

    Publication Year: 2007 , Page(s): 1 - 5
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (618 KB) |  | HTML iconHTML  

    Carrier frequency offset (CFO) effects on the packet error rate performance of a proposed IEEE 802.11 n WLAN standard are investigated. With the maximum CFO (40 ppm) requirement specified by the standard, simulation results show that performance degradation is limited to within 1.5 dB for various TGn channels, modulation and coding schemes, transmit antenna excitation schemes and OFDM MIMO transce... View full abstract»

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  • Direct Location Estimation using Indoor Wireless Communication Systems

    Publication Year: 2007 , Page(s): 1 - 5
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (446 KB) |  | HTML iconHTML  

    In order to estimate the location of an indoor mobile station (MS), estimated time of arrival (TOA) can be obtained at each of several access points, or base stations (BS). These TOA estimates can then be used to solve for the location of the MS. In this paper, we present an alternative direct location estimator which incorporates the received signals at all base stations to estimate the location ... View full abstract»

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  • Evolution of GSM into the Next Generation Wireless World

    Publication Year: 2007 , Page(s): 1 - 10
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1759 KB) |  | HTML iconHTML  

    GSM is the most widely deployed 2nd generation digital cellular standard, with over 2 billion subscribers in some 213 countries and adding about 1000 new users per minute! Originally developed in the 1980s, and first deployed in 1991, GSM is a TDMA+FDMA system, providing wide area voice communications using 200 KHz carriers. Subsequently, GSM evolved into a 2.5G standard with the introd... View full abstract»

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  • Demonstration of a Self-Powered Boiler Concept Based on Emitter-less Thermophotovoltaic Power Generation

    Publication Year: 2007 , Page(s): 1 - 7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1134 KB) |  | HTML iconHTML  

    In this study the technical feasibility of implementing thermophotovoltaic (TPV) power generation through the use of GaSb photocells within the chamber of a residential, oil-fired boiler was evaluated. The objective of this work is a self-powered hydronic heating system for which an estimated 200 watts of power is needed. An approach was developed in which direct radiation from the combustion cham... View full abstract»

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  • The Use of Behavioral Diagrams in SysML

    Publication Year: 2007 , Page(s): 1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (64 KB)  

    The definition of behavior in systems modeling language (SysML) presents special challenges to systems engineers, as overlapping functionality exists among SysML behavioral diagrams. Through discussion and examples, this paper imparts an understanding of SysML behavioral diagrams that will assist systems engineers in defining the behavior of various systems. The paper discusses the following goals... View full abstract»

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  • Reliability Modeling and Analysis of Wireless Sensor Networks

    Publication Year: 2007 , Page(s): 1
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (94 KB)  

    Summary form only given. We consider the problem of reliability modeling and analysis of hierarchical clustered wireless sensor networks (WSN) in this paper. We propose reliability measures that integrate the conventional connectivity-based network reliability with the sensing coverage measure indicating the quality of service (QoS) of the WSN. And we propose a progressive approach for evaluating ... View full abstract»

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  • User Authentication via Behavior Based Passwords

    Publication Year: 2007 , Page(s): 1 - 8
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1138 KB) |  | HTML iconHTML  

    Computer security to a degree depends on trustworthy user authentication; unfortunately currently used passwords are not completely secure or user friendly. One of the main problems with passwords is that good passwords are hard to remember and the ones which are easy to remember are too short to be secure. We have designed a graphical authentication schema with a password, which is easy to rememb... View full abstract»

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  • Sequential and Parallel Feature Extraction in Hyperspectral Data Using Nonnegative Matrix Factorization

    Publication Year: 2007 , Page(s): 1 - 7
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1130 KB) |  | HTML iconHTML  

    Feature extraction refers to the groups of techniques that, when applied to large dimensional and redundant data result in significant dimensionality reduction while preserving or even enhancing the information content. Among various techniques investigated for feature extraction, of new interest is nonnegative matrix factorization (NMF). In NMF, it is assumed that the data is formed as a linear n... View full abstract»

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  • Ocean-Powered Pump for Global Cooling and Increased Food Production

    Publication Year: 2007 , Page(s): 1 - 6
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (799 KB) |  | HTML iconHTML  

    Cold water pumped up from the deep ocean and spread out on the surface may be a way to cool the Earth's surface while providing macro- and micro-nutrients needed by phytoplankton in the surface layer. The resulting increased photosynthesis converts the carbon dioxide (CO2) dissolved in the water into increased phytoplankton mass, which feeds zooplankton and other members of the marine f... View full abstract»

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  • Structural Barrier Electromagnetic Effects Modeling and Simulation

    Publication Year: 2007 , Page(s): 1 - 4
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (894 KB) |  | HTML iconHTML  

    The phenomenological study of magnetic, electric and electromagnetic field interactions with barrier structures and materials is important to understand from the standpoint of designing for the effects of stray magnetic and electric fields on sensitive electronic equipment for evolving aircraft applications to advanced sensors and systems for urban warfare. Northrop Grumman integrated systems east... View full abstract»

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  • CdZnTe room-temperature semiconductor gamma-ray detector for national-security applications

    Publication Year: 2007 , Page(s): 1 - 8
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1878 KB) |  | HTML iconHTML  

    One important mission of the Department of Energy's National Nuclear Security Administration is to develop reliable gamma-ray detectors to meet the widespread needs of users for effective techniques to detect and identify special nuclear- and radioactive-materials. Accordingly, the Nonproliferation and National Security Department at Brookhaven National Laboratory was tasked to evaluate existing t... View full abstract»

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  • A micro power sigma-delta A/D converter in 0.35-μM CMOS for low frequency applications

    Publication Year: 2007 , Page(s): 1 - 7
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1024 KB) |  | HTML iconHTML  

    A very low-power single loop second order 12-bit sigma- delta (SigmaDelta) A/D converter in 0.35-mum triple metal, double poly CMOS technology has been designed for low frequency applications. The A/D converter includes a second-order SigmaDelta modulator together with a DSP circuit comprising of a cascade of CIC and FIR digital filters. The design was focused on the minimization of power dissipat... View full abstract»

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  • Digital Phosphor Technology Boosts RF Signal Discovery and Analysis

    Publication Year: 2007 , Page(s): 1
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (97 KB)  

    Digital phosphor technology, traditionally used in advanced oscilloscopes, has been applied to the RF domain and can now be found in preeminent real-time spectrum analyzers (RTSAs). In enabling users to view "live RF" signals for the first time, digital phosphor technology provides unmatched insight into RF signal behavior. In fact, full-motion digital phosphor displays show signals and details th... View full abstract»

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  • Harold A. Wheeler's Antenna Design Legacy

    Publication Year: 2007 , Page(s): 1 - 6
    Cited by:  Papers (3)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (793 KB) |  | HTML iconHTML  

    Harold A. Wheeler had a distinguished career in the field of radio-electronics. He had a unique talent for reducing complex scientific principles to simple forms that were universally helpful to theoreticians and practitioners. Of his many contributions, those related to antenna design are the subject of this paper. The three principal antenna topics in Dr. Wheeler's experience were impedance matc... View full abstract»

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  • Directional detection of fission-spectrum neutrons

    Publication Year: 2007 , Page(s): 1 - 5
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1648 KB) |  | HTML iconHTML  

    Conventional neutron detectors consisting of 3 He tubes surrounded by a plastic moderator can be quite efficient in detecting fission spectrum neutrons, but do not indicate the direction of the incident radiation. We have developed a new directional detector based on double proton recoil in two separated planes of plastic scintillators. This method allows the spectrum of the neutrons to... View full abstract»

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  • Safe Computing in the Age of Ubiquitous Connectivity

    Publication Year: 2007 , Page(s): 1 - 7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (707 KB) |  | HTML iconHTML  

    The emergence of ubiquitous broadband connectivity has transformed the computing landscape. Telecommuting is no longer limited to those whose work can be done from a fixed home office. Telecommuting has embraced the hundreds of thousands of workers whose day is spent in the field visiting clients and customers. The worker's umbilical to the office is a mobile device with a secure connection provis... View full abstract»

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  • Review of Location Management in Cellular Networks

    Publication Year: 2007 , Page(s): 1 - 6
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (794 KB) |  | HTML iconHTML  

    Location management is a paramount issue in wireless mobile station communication systems to enable the terminals to continuously receive services when moving from one location to another. In this paper, we study the trends in the latest cellular wireless systems to page terminals, update location area and make handover decisions for a mobile station. Topics covered include static and dynamic loca... View full abstract»

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