http://www.ntis.gov/rss/RSSNTISCategoryList.aspxNational Technical Reports Libraryen(c) 2008, National Technical Information Service. All rights reserved.5http://www.ntis.gov/images/logoRSS.jpghttp://www.ntis.govThis report describes sample design, sample selection, weighting, and variance estimation procedures for the 2008 Post-Election Voting Survey of Department of State Voting Assistance Officers. The first section of this report describes the design and ...http://www.ntis.gov/search/product.aspx?ABBR=ADA504031This report describes sample design, sample selection, weighting, and variance estimation procedures for the 2008 Post-Election Voting Survey of Federal Civilians Overseas. The first section of this report describes the design and selection of sample ...http://www.ntis.gov/search/product.aspx?ABBR=ADA504035This report describes sample design, sample selection, weighting, and variance estimation procedures for the 2008 Post-Election Voting Survey of Local Election Officials. The first section of this report describes the design and selection of sample. ...http://www.ntis.gov/search/product.aspx?ABBR=ADA504028This report describes sample design, sample selection, weighting, and variance estimation procedures for the 2008 Post-Election Voting Survey of Overseas Citizens. The first section of this report describes the design and selection of sample. The sec ...http://www.ntis.gov/search/product.aspx?ABBR=ADA504033This report describes sample design, sample selection, weighting, and variance estimation procedures for the 2008 Post-Election Voting Survey of Uniformed Service Members. The first section of this report describes the design and selection of sample. ...http://www.ntis.gov/search/product.aspx?ABBR=ADA504034This report describes sample design, sample selection, weighting, and variance estimation procedures for the 2008 Post-Election Voting Survey of Unit Voting Assistance Officers. The first section of this report describes the design and selection of s ...http://www.ntis.gov/search/product.aspx?ABBR=ADA504027The CESE development is driven by a belief that a solver should (i) enforce conservation laws in both space and time, and (ii) be built from a nondissipative (i.e., neutrally stable) core scheme so that the numerical dissipation can be controlled eff ...http://www.ntis.gov/search/product.aspx?ABBR=N20090030508The federal Title I program provides financial assistance to schools with a high number or percentage of poor children to help all students meet state academic standards. Under the No Child Left Behind Act (NCLB), Title I schools must make adequate y ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101491In this paper we introduce a new algorithm for assigning sensors and weapons to targets in the dynamic environment, where sensors, weapons, and targets are allowed to move freely (but predictably) over a certain region of a battlefield. In addition, ...http://www.ntis.gov/search/product.aspx?ABBR=ADA50579014. ABSTRACT This report summarize the analysis and cyclic testing of a laser welded steel sandwich panel end connection. Also included are monotonic tests of stake welded lap shear coupons with welds oriented both longitudinally and transverse. Stee ...http://www.ntis.gov/search/product.aspx?ABBR=ADA506077In this paper, we compare three interpolation functions in a discretized continuum when used in coupled dynamic atomistic-to-continuum simulations. The focus is on assessing the ability of the discrete continuum model to capture and accurately repres ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505837This paper addresses the problem of assigning a label to three- dimensional data points collected from laser scanners. We are specifically interested in the application of environment modeling for autonomous robot navigation in natural and urban terr ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505846This monograph proposes that current Army doctrine is an adequate tool to achieve the desired results proposed in the concepts of Operational Design. Because Army doctrine prescribes approaches that solve problems, it is important to understand the n ...http://www.ntis.gov/search/product.aspx?ABBR=ADA506134We study time delay estimation (TDE) on parallel channels with flat fading. Several models for the channel gains are considered, and for each case we present the maximum likelihood estimator (MLE), the Cramer-Rao bound (CRB), and the Ziv-Zakai bound ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505459Identifying the causes of failure is fundamental to improving the survivability of Army systems whether they are remote sensors, complex vehicles, or networks. The shape of a repair frequency curve of a complex system is determined by variability in ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505887A three-dimensional mortar interior ballistic (3D-MIB) model and code have been developed and stage-wise validated with multiple sets of experimental data in close collaboration between The Pennsylvania State Univ. (PSU) and Army Research and Develop ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505868We find that the global symbolic dynamics of a diffusively coupled map lattice (CML) is well approximated by a very small local model for weak to moderate coupling strengths. A local symbolic model is a truncation of the full symbolic model to one th ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505938Advancing the development of a net-centric Army depends on our ability to understand the benefits and costs of information flow through networks. Networks can vary in composition and expanse, with a variety of examples present in daily life (e.g., th ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505781The need to discover patterns in spatio-temporal (ST) data has driven much recent research in ST cooccurrence patterns. Early work focused on discovering spatial patterns such as co-location without examining the development of patterns over time or ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505835Dispersion in the wake of an obstacle is studied as a step towards the analysis of bio-agent release in urban environments. Available experimental measurements are used to compare in details numerical predictions obtained using Reynolds-Averaged Navi ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505936We present algebraic operators useful in constructing models for software engineering applied to reliability and security. Double rail testing is a mathematical formalism for analyzing testing situations that have both false positives and false negat ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505365Doubly curved composite sandwich panels loaded by evenly distributed pressure were designed, analyzed, manufactured and tested. Quick and cost effective methods for making molds for vacuum infused doubly curved composites were studied and implemented ...http://www.ntis.gov/search/product.aspx?ABBR=ADA506070A hybrid prognosis model is being developed for real-time residual useful life estimation of metallic aircraft structural components. The prognosis framework combines information from off-line physics-based, off-line data driven and on-line system id ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505544The goal in this research is to accurately assess the fatigue life of hybrid composite/metal connections focusing upon bolted joints used in removable panels. Experimental testing was performed in flexure fatigue as part of this effort and is essenti ...http://www.ntis.gov/search/product.aspx?ABBR=ADA506051An important area of investigation in robotics perception and intelligent control concerns the ability to detect, track, and avoid humans operating in proximity to an unmanned ground vehicle (UGV). Under the Army Research Laboratory (ARL) Robotics Co ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505754The multilevel fast multipole method (MLFMM) is an algorithm that has had great success in reducing the computational time required to find the solution to the Galerkin boundary integral form of the Helmholtz equation. We present a new formulation of ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505797A distinctive feature of unmanned and conventional terrain vehicles with four or more driving wheels consists of the fact that energy/fuel efficiency and mobility depend markedly not only on the total power applied to all the driving wheels, but also ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505904With the adoption of a new Performance Evaluation System in the late 1990s (more commonly referred to as a 'fitrep'), the Marine Corps fielded a document with the ability to put each individual fitrep's average into perspective using a corresponding ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505526We considered the feasibility of utilizing High Dimensional Model Representation (HDMR) technique in the stochastic space to represent the model output as a finite hierarchical correlated function expansion in terms of the stochastic inputs starting ...http://www.ntis.gov/search/product.aspx?ABBR=ADA506164The usual tools for computing special functions are power series, asymptotic expansions, continued fractions, differential equations, recursions, and so on. Rather seldom are methods based on quadrature of integrals. Selecting suitable integral repre ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101518The purpose of this paper is to introduce discretisation methods of discontinuous Galerkin type for solving second order elliptic PDEs on a structured, regular rectangular grid, while the problem is defined on a curved boundary. The methods aim at hi ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101520We consider the problem of global minimization of rational functions on IRn (unconstrained case), and on an open, connected, semi-algebraic subset of IRn, or the (partial) closure of such a set (constrained case). We show that in the univariate case ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101523In 1750, Euler published an extensive paper on amicable pairs, by which he added fifty-nine new amicable pairs to the three amicable pairs known thus far. In 1972, Lee and Madachy published a historical survey of amicable pairs, with a list of the 11 ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101526System identification for a particular approach reduces to system reduction, determining for a system with a high state-space dimension a system of low state-space dimension. For Gaussian systems the problem of system reduction is considered with the ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101522Numerical methods for the computation of stationary free surfaces is the subject of much current research in computational engineering. The present report is directed towards free surfaces in maritime engineering. Of interest here are the long steady ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101521In this paper we introduce a discretisation of Discontinuous Galerkin (DG) type for solving 2-D second order elliptic PDEs on a regular rectangular grid, while the boundary value problem has a curved Dirichlet boundary. According to the same principl ...http://www.ntis.gov/search/product.aspx?ABBR=PB2010101525The Nash equilibrium concept of non-zero sum games is one possible option available to military planners seeking strategies to control large numbers of autonomous assets operating in an adversarial environment. To implement the Nash strategies inhere ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505726There have been a number of previous successful efforts that show how fuzzy logic concepts have homomorphic-like stochastic correspondences, utilizing one-point coverages of appropriately constructed random sets. Independent of this and fuzzy logic c ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505614Off-line and On-line fatigue crack growth prediction of Aluminum 2024 compact-tension (CT) specimens under variable loading has been modeled, using multivariate Gaussian Process technique. The Gaussian Process model projects the input space to an out ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505600The point spread function (PSF) describes response of a linear optical imaging system to a point light source (see Point spread function and imaging in turbid medium). This response includes the effects of both the image system itself (lens, mirror, ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505842Axial waves predicted by a two-dimensional hybrid numerical model have been used to estimate electron cross field transport due to tilted waves with azimuthal components. Since the radial-axial hybrid simulation cannot model these tilted waves direct ...http://www.ntis.gov/search/product.aspx?ABBR=ADA506232The current use of functionals to evaluate order-of-convergence of a numerical scheme can lead to incorrect values. The problem comes about because of interplay between the errors from the evaluation of the functional, e.g., quadrature error, and fro ...http://www.ntis.gov/search/product.aspx?ABBR=N20090030518We describe a text classification approach based on statistical language modeling. We show how this approach can be used for several natural language processing tasks in a virtual human system. Specifically, we show it can be applied to language unde ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505848We present a conceptual discussion of a numerical method to simulate the penetration of a ballistic gel by a projectile. The method draws on the computational advantages presented by asynchronous variational integrators (AVIs) and an immersed boundar ...http://www.ntis.gov/search/product.aspx?ABBR=ADA505859This research has two main components: (1) a new, wavelet-based cascade model for intermittent (uneven) distributions of objects in terrestrial environments and (2) a complementary analysis of intermittent wave scattering. Taken together, these devel ...http://www.ntis.gov/search/product.aspx?ABBR=ADA506074