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Vendor: Tim Sanders
2020-2021 Middle School Contest Materials
This book contains one year of mathleague.org Middle School Contest Problem Sets, complete with answer keys and solutions: 7 qualifying-level Contest Problem Sets, one State-level Contest Problem Set, and one National-level Contest Problem Set. Each Contest Problem Set contains a Sprint, Target, Team, and...- $45.00
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Vendor: Kerry J. Macintyre
Analysis in the Utility of Commercial Wargaming Simulation Software for Army Organizational Leadership Development - War College Series
This is a curated and comprehensive collection of the most important works covering matters related to national security, diplomacy, defense, war, strategy, and tactics. The collection spans centuries of thought and experience, and includes the latest analysis of international threats, both conventional and asymmetric....- $17.75
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Load Balancing Using Time Series Analysis for Soft Real Time Systems with Statistically Periodic Loads
This thesis provides design and analysis of techniques for global load balancing on ensemble architectures running soft-real-time object-oriented applications with statistically periodic loads. It focuses on estimating the instantaneous average load over all the processing elements. The major contribution is the use of explicit...- $57.95
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Experimental Assessment and Enhancement of Planar Laser-Induced Fluorescence Measurements of Nitric Oxide in an Inverse Diffusion Flame
We have experimentally assessed the quantitative nature of planar laser-induced fluorescence (PLIF) measurements of NO concentration in a unique atmospheric pressure, laminar, axial inverse diffusion flame (IDF). The PLIF measurements were assessed relative to a two-dimensional array of separate laser saturated fluorescence (LSF) measurements....- $57.95
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Analysis of Airborne Radar Altimetry Measurements of the Greenland Ice Sheet
This dissertation presents an analysis of airborne altimetry measurements taken over the Greenland ice sheet with the 13.9 GHz Advanced Application Flight Experiment (AAFE) pulse compression radar altimeter. This Ku-band instrument was refurbished in 1990 by the Microwave Remote Sensing Laboratory at the University...- $57.95
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A High Spectral Resolution Lidar Based on Absorption Filter
A High Spectral Resolution Lidar (HSRL) that uses an iodine absorption filter and a tunable, narrow bandwidth Nd: YAG laser is demonstrated. The iodine absorption filter provides better performance than the Fabry-Perot etalon that it replaces. This study presents an instrument design that can...- $17.95
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The Effect of Enhanced Diabatic Heating on Stratospheric Circulation
The objective of this research focuses on the stratospheric dynamical response to the increase in aerosol loading and subsequent enhanced diabatic heating resulting from the eruption of Mt. Pinatubo. The Langley research Center three dimensional general circulation model and modifications made to that model...- $18.95
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Fiber-Optic Temperature Sensor Using a Thin-Film Fabry-Perot Interferometer
A fiber-optic temperature sensor was developed that is rugged, compact, stable, and can be inexpensively fabricated. This thin-film interferometric temperature sensor was shown to be capable of providing a +/- 2 C accuracy over the range of -55 to 275 C, throughout a 5000...- $57.95
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Isothermal Fatigue, Damage Accumulation, and Life Prediction of a Woven PMC
This dissertation focuses on the characterization of the fully reversed fatigue behavior exhibited by a carbon fiber/polyimide resin, woven laminate at room and elevated temperatures. Nondestructive video edge view microscopy and destructive sectioning techniques were used to study the microscopic damage mechanisms that evolved....- $18.95
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Student Support for Research in Hierarchical Control and Trajectory Planning
Generally, classical polynomial splines tend to exhibit unwanted undulations. In this work, we discuss a technique, based on control principles, for eliminating these undulations and increasing the smoothness properties of the spline interpolants. We give a generalization of the classical polynomial splines and show...- $15.95
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A Hybrid Numerical Method for Turbulent Mixing Layers
A hybrid method has been developed for simulations of compressible turbulent mixing layers. Such mixing layers dominate the flows in exhaust systems of modern day aircraft and also those of hypersonic vehicles currently under development. The method configurations in which a dominant structural feature...- $20.95
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The Effect of Wake Passing on Turbine Blade Film Cooling
The effect of upstream blade row wake passing on the showerhead film cooling performance of a downstream turbine blade has been investigated through a combination of experimental and computational studies. The experiments were performed in a steady-flow annular turbine cascade facility equipped with an...- $22.95
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A Study of Direct and Cloud-Mediated Radiative Forcing of Climate Due to Aerosols
The Intergovernmental Panel on Climate Change (IPCC) has reported that in the southeastern US and eastern China, the general greenhouse warming due to anthropogenic gaseous emissions is dominated by the cooling effect of anthropogenic aerosols. To verify this model prediction in eastern China and...- $22.95
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Linkages Between Global Vegetation and Climate: An Analysis Based on NOAA Advanced Very High Resolution Radiometer Data
A monthly global 1 degree by 1 degree data set from 1982 until 1990 was derived from data collected by the Advanced Very High Resolution Radiometer on board the NOAA 7, 9, and 11 satellites. This data set was used to study the interactions...- $20.95
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A Study of Wake Development and Structure in Constant Pressure Gradients
Motivated by the application to high-lift aerodynamics for commercial transport aircraft, a systematic investigation into the response of symmetric/asymmetric planar turbulent wake development to constant adverse, zero, and favorable pressure gradients has been conducted. The experiments are performed at a Reynolds number of 2.4...- $20.95
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Generalized Reliability Methodology Applied to Brittle Anisotropic Single Crystals
A generalized reliability model was developed for use in the design of structural components made from brittle, homogeneous anisotropic materials such as single crystals. The model is based on the Weibull distribution and incorporates a variable strength distribution and any equivalent stress failure criteria....- $20.95
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The Behavior of TCP and Its Extensions in Space
The performance of Transmission Control Protocol (TCP) in space has been examined from the observations of simulation and experimental tests for several years at National Aeronautics and Space Administration (NASA), Department of Defense (DoD) and universities. At New Mexico State University (NMSU), we have...- $20.95
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High Energy Particle Acceleration and Turbulent Magnetic Field Amplification in Shell Type Supernova Remnants
Thesis submitted to the faculty of the Graduate School of the University of Minnesota in partial fulfillment of the requirements for the degree of Doctor of Philosophy. Part I discusses the spatial correlation between the x-ray and radio morphologies of Cas A, and in...- $18.95
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System Dynamic Analysis of a Wind Tunnel Model With Applications to Improve Aerodynamic Data Quality
The research investigates the effect of wind tunnel model system dynamics on measured aerodynamic data. During wind tunnel tests designed to obtain lift and drag data, the required aerodynamic measurements are the steady-state balance forces and moments, pressures, and model attitude. However, the wind...- $17.95
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Surface Disturbances in Magnetohydrodynamics
A study and explanation of characteristics of surface disturbances in magnetohydrodynamics are presented. Unusual "transient" disturbances are described. The latter exist during continuous transitions from one type cf disturbance to another. Primary consideration, however, is given to the problem of stability of tangential disturbances....- $13.95
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An Experimental Investigation on the Static Equilibria and Dynamics of Liquid Bridges
A liquid bridge is a volume of liquid held between two or more solid supports. In the case of small disk supports with a sharp edge, the contact line between the bridge and the support disk will be anchored along the edge of the...- $20.95
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Thermal Effects on the Bearing Behavior of Composite Joints
Thermal effects on the pin-bearing behavior of an IM7/PET15 composite laminate are studied comprehensively. A hypothesis presents factors influencing a change in pin-bearing strength with a change in temperature for a given joint design. The factors include the change in the state of residual...- $17.95
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Experimental Study of Boundary Layer Behavior in a Simulated Low Pressure Turbine
A detailed investigation of the flow physics occurring on the suction side of a simulated Low Pressure Turbine (LPT) blade was performed. A contoured upper wall was designed to simulate the pressure distribution of an actual LPT blade onto a flat plate. The experiments...- $18.95
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Sensitivity Analysis and Optimization of Enclosure Radiation With Applications to Crystal Growth
In engineering, simulation software is often used as a convenient means for carrying out experiments to evaluate physical systems. The benefit of using simulations as 'numerical' experiments is that the experimental conditions can be easily modified and repeated at much lower cost than the...- $17.95
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Strain Rate Dependent Deformation and Strength Modeling of a Polymer Matrix Composite Utilizing a Micromechanics Approach
Potential gas turbine applications will expose polymer matrix composites to very high strain rate loading conditions, requiring an ability to understand and predict the material behavior under extreme conditions. Specifically, analytical methods designed for these applications must have the capability of properly capturing the...- $57.95
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Multi-Dimensional Upwind Fluctuation Splitting Scheme With Mesh Adaption for Hypersonic Viscous Flow
A multi-dimensional upwind fluctuation splitting scheme is developed and implemented for two-dimensional and axisymmetric formulations of the Navier-Stokes equations on unstructured meshes. Key features of the scheme are the compact stencil, full upwinding, and non-linear discretization which allow for second-order accuracy with enforced positivity....- $25.95
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Theoretical and Numerical Investigation of Radiative Extinction of Diffusion Flames
The influence of soot radiation on diffusion flames was investigated using both analytical and numerical techniques. Soot generated in diffusion flames dominate the flame radiation over gaseous combustion products and can significantly lower the temperature of the flame. In low gravity situations there can...- $20.95
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An Algorithm for Efficient Maximum Likelihood Estimation and Confidence Interval Determination in Nonlinear Estimation Problems
An algorithm for maximum likelihood (ML) estimation is developed with an efficient method for approximating the sensitivities. The algorithm was developed for airplane parameter estimation problems but is well suited for most nonlinear, multivariable, dynamic systems. The ML algorithm relies on a new optimization...- $17.95
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An Acoustic Charge Transport Imager for High Definition Television Applications: Reliability Modeling and Parametric Yield Prediction of GaAs Multiple
Reliability modeling and parametric yield prediction of GaAs/AlGaAs multiple quantum well (MQW) avalanche photodiodes (APDs), which are of interest as an ultra-low noise image capture mechanism for high definition systems, have been investigated. First, the effect of various doping methods on the reliability of...- $18.95
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Viscoplastic Model Development to Account for Strength Differential: Application to Aged Inconel 718 at Elevated Temperature
The magnitude of yield and flow stresses in aged Inconel 718 are observed to be different in tension and compression. This phenomenon, called the Strength differential (SD), contradicts the metal plasticity axiom that the second deviatoric stress invariant alone is sufficient for representing yield...- $20.95
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Pilot Non-Conformance to Alerting System Commands During Closely Spaced Parallel Approaches
Cockpit alerting systems monitor potentially hazardous situations, both inside and outside the aircraft. When a hazard is projected to occur, the alerting system displays alerts and/or command decisions to the pilot. However, pilots have been observed to not conform to alerting system commands by...- $18.95
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Extinguishment of a Diffusion Flame Over a PMMA Cylinder by Depressurization in Reduced-Gravity
Extinction of a diffusion flame burning over horizontal PMMA (Polymethyl methacrylate) cylinders in low-gravity was examined experimentally and via numerical simulations. Low-gravity conditions were obtained using the NASA Lewis Research Center's reduced-gravity aircraft. The effects of velocity and pressure on the visible flame were...- $18.95
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Full-Potential Modeling of Blade-Vortex Interactions
A study of the full-potential modeling of a blade-vortex interaction was made. A primary goal of this study was to investigate the effectiveness of the various methods of modeling the vortex. The model problem restricts the interaction to that of an infinite wing with...- $15.95
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Improvements in Block-Krylov Ritz Vectors and the Boundary Flexibility Method of Component Synthesis
A method of dynamic substructuring is presented which utilizes a set of static Ritz vectors as a replacement for normal eigenvectors in component mode synthesis. This set of Ritz vectors is generated in a recurrence relationship, proposed by Wilson, which has the form of...- $20.95
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Buckling and Damage Resistance of Transversely-Loaded Composite Shells
Experimental and numerical work was conducted to better understand composite shell response to transverse loadings which simulate damage-causing impact events. The quasi-static, centered, transverse loading response of laminated graphite/epoxy shells in a []/-45(sub n)/O(sub n)](sub s) layup having geometric characteristics of a commercial fuselage...- $22.95
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Open Platform for Limit Protection With Carefree Maneuver Applications
This Open Platform for Limit Protection guides the open design of maneuver limit protection systems in general, and manned, rotorcraft, aerospace applications in particular. The platform uses three stages of limit protection modules: limit cue creation, limit cue arbitration, and control system interface. A...- $17.95
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Microcracking of Materials for Space
The effect of thermal-cycling-induced microcracking in fiber-reinforced polymer matrix composites is studied. Specific attention is focused on microcrack density as a function of the number of thermal cycles, and the effect of microcracking on the dimensional stability of composite materials. Changes in laminate coefficient...- $22.95
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Determination of the Fracture Parameters in a Stiffened Composite Panel
A modified J-integral, namely the equivalent domain integral, is derived for a three-dimensional anisotropic cracked solid to evaluate the stress intensity factor along the crack front using the finite element method. Based on the equivalent domain integral method with auxiliary fields, an interaction integral...- $17.95
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Functional Techniques for Data Analysis
This dissertation develops a new general method of solving Prony's problem. Two special cases of this new method have been developed previously. They are the Matrix Pencil and the Osculatory Interpolation. The dissertation shows that they are instances of a more general solution type...- $15.95
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The Role of Musculoskeletal Dynamics and Neuromuscular Control in Stress Development in Bone
The role of forces produced by the musculotendon units in the stress development of the long bones during gait has not been fully analyzed. It is well known that the musculotendons act as actuators producing the joint torques which drive the body. Although the...- $57.95
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A Geodetic Study of Sumatra and the Indonesian Region: Kinematics and Crustal Deformation From GPS and Triangulation
Indonesia is a tectonically complex region located where the Eurasia, Australia, Pacific, and Philippine Sea plates converge. This dissertation presents the analysis of geodetic GPS data collected in Indonesia from 1989 to 1994 and historical triangulation data collected in Sumatra in the late 1800s...- $18.95
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Experimental Investigation of Jet Impingement Heat Transfer Using Thermochromic Liquid Crystals
Jet impingement cooling of a hypersonic airfoil leading edge is experimentally investigated using thermochromic liquid crystals (TLCS) to measure surface temperature. The experiment uses computer data acquisition with digital imaging of the TLCs to determine heat transfer coefficients during a transient experiment. The data...- $18.95
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An Investigation of the Electrical Short Circuit Characteristics of Tin Whiskers
Existing risk simulations make the assumption that when a free tin whisker has bridged two adjacent exposed electrical conductors, the result is an electrical short circuit. This conservative assumption is made because shorting is a random event that has a currently unknown probability associated...- $57.95
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Characterization of Small Scale Roughness Elements on a Water Surface
Air-water exchanges of momentum, heat and water vapor were investigated from a tower on a fresh water lake at low to moderate wind speeds, 3 less than U(sub 10) less than 8 m/s. The tower is located 15 m offshore where water depth is...- $20.95
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"Similar" Three-Dimensional Boundary Layers
In two-dimensional boundary-layer flows, almost exclusively considered up to the present time, all flow parameters are independent of the third coordinate. In three-dimensional flow processes, in contrast, the outer potential flow is a function of two space coordinates parallel to the wall surrounded by...- $15.95
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Fracture of Composite Orthotropic Plates Containing Periodic Buffer Strips
The fracture problem of laminated plates which consist of bonded orthotropic layers is studied. It is assumed that the medium contains periodic cracks normal to the bi-material interfaces and the external loads are applied away from the crack region. The field equations for an...- $17.95
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Small-Scale Spatial Fluctuations in the Soft X-Ray Background
In order to isolate the diffuse extragalactic component of the soft X-ray background, we have used a combination of ROSAT All-Sky Survey and IRAS 100 micron data to separate the soft X-ray background into five components. We find a Local Hot Bubble similar to...- $22.95
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8-PSK Signaling Over Non-Linear Satellite Channels
Space agencies are under pressure to utilize better bandwidth-efficient communication methods due to the actual allocated frequency bands becoming more congested. Also budget reductions is another problem that the space agencies must deal with. This budget constraint results in simpler spacecraft carrying less communication...- $20.95
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Adaptive Attitude Control of the Crew Launch Vehicle
An H(sub infinity)-NMA architecture for the Crew Launch Vehicle was developed in a state feedback setting. The minimal complexity adaptive law was shown to improve base line performance relative to a performance metric based on Crew Launch Vehicle design requirements for all most all...- $13.95
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Sensitivity Analysis of Wing Aeroelastic Responses
Design for prevention of aeroelastic instability (that is, the critical speeds leading to aeroelastic instability lie outside the operating range) is an integral part of the wing design process. Availability of the sensitivity derivatives of the various critical speeds with respect to shape parameters...- $18.95
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Education Books
Education books are a broad category of literature that provides information, insights, and guidance on various aspects of learning, teaching, and educational theories. These books are written by experts, scholars, and practitioners in the field of education and are intended for both educators and learners alike. Education books cover a diverse range of topics, including but not limited to pedagogy, curriculum development, educational psychology, educational leadership, special education, assessment and evaluation, instructional technology, and educational policy. They are designed to cater to individuals at different stages of their educational journeys, from early childhood education to higher education and beyond.
The primary objective of education books is to enhance understanding and promote effective learning. They not only provide theoretical knowledge but also offer practical strategies, tips, and real-life examples to help educators and learners apply these concepts in different educational settings. These books often incorporate case studies, research findings, and evidence-based practices to support their arguments and suggestions.
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