Journal of Environmental Quality May-June 2004: Volume 33 , Issue 3. Digitized from IA1514130-01 . Previous issue: sim_journal-of-environmental-quality_march-april-2004_33_2 . Next issue: sim_journal-of-environmental-quality_july-august-2004_33_4 .
Topics: Agriculture--Crop Production And Soil, Environmental Studies, Scholarly Journals, microfilm
Source: IA1514130-01
Survey of Current Business 2004-05: Volume 84 , Issue 5. Digitized from IA1627809-05 . Previous issue: sim_survey-of-current-business_2004-04_84_4 . Next issue: sim_survey-of-current-business_2004-06_84_6 .
Topics: Business And Economics--Economic Situation And Conditions, Statistics, Trade Journals, microfilm
Source: IA1627809-05
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Macworld 2004-05: Volume 21 , Issue 5. Digitized from IA1643622-01 . Previous issue: sim_macworld_2004-04_21_4 . Next issue: sim_macworld_2004-06_21_6 .
Topics: Computers--Microcomputers, Computers--Personal Computers, Magazines, microfilm
Source: IA1643622-01
International Journal of Hydrogen Energy 2004-05: Volume 29 , Issue 6. Digitized from IA1652726-01 . Previous issue: sim_international-journal-of-hydrogen-energy_2004-04_29_5 . Next issue: sim_international-journal-of-hydrogen-energy_2004-07_29_7 .
Topics: Engineering & Technology, Scholarly Journals, microfilm
Source: IA1652726-01
This report provides a review of select Soviet and Russian (SIR) literature from the mid 1960s to the mid 199Os related to residual stresses in wound composite articles. Through a compilation of SIR review articles. a historical overview of the development of this SIR knowledge base is first provided. This overview is then followed by detailed compilations of the following topics: experimental measurement of residual stress development in wound composites. cure shrinkage in neat polymers....
Topics: DTIC Archive, Wetzel, Eric D, ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD, *POLYMERS, *MATRIX...
Fibroblast growth factor binding protein (FGF-BP) releases immobilized FGFs from the extracellular matrix and can function as an angiogenic switch molecule in cancer. We have determined that FGF-BP is upregulated in a portion of breast cancers and this upregulation is correlated with increased expression of beta-catenin. In this grant we hypothesized that beta-catenin can initiate angiogenesis in mammary carcinoma through FGF-BP. The aims were 1) to study the expression of FGF-BP in mammary...
Topics: DTIC Archive, Stylianou, Dora C, GEORGETOWN UNIV WASHINGTON DC, *FIBROBLASTS, *BREAST CANCER,...
Proinflammatory mediate the toxic effect of superantigenic staphylococcal exotoxins (SE). A pan-caspase inhibitor suppressed SE-stimulated T-cell proliferation and the production of cytokines and chemokines by human peripheral blood mononuclear cells. These data suggest that caspase inhibitors may represent a novel therapeutic modality for treating SE-induced toxic shock.
Topics: DTIC Archive, Krakauer, Teresa, ARMY MEDICAL RESEARCH INST OF INFECTIOUS DISEASES FORT DETRICK MD,...
The following research investigated gender and the leadership role and determined if there are differences in leadership styles, behaviors, traits, and characteristics between female leaders and male leaders. Literature suggests there are specific gender leadership differences between males and females in leadership styles, behaviors, traits, and characteristics. This qualitative study assessed 2 male and 4 female faculty members with face-to-face interviews. Results indicated distinctions...
Topics: ERIC Archive, Leadership Qualities, Leaders, Women Faculty, Gender Differences, Leadership Styles,...
Coin Values, vol. 2, number 5.
Topic: Numismatics
No Description
Topic: Podcast
Evidence-centered assessment design (ECD) is an approach to constructing educational assessments in terms of evidentiary arguments. This paper provides an introduction to the basic ideas of ECD, including some of the terminology and models that have been developed to implement the approach. In particular, it presents the high-level models of the Conceptual Assessment Framework and the Four-Process Architecture for assessment delivery systems. Special attention is given to the roles of...
Topics: ERIC Archive, Student Evaluation, Evaluation Methods, Concept Formation, Thinking Skills, Test...
The California Postsecondary Education Commission (CPEC) has collected and provided information about education ? particularly higher education--in California since 1976. As a "one-stop-shop" for information about education beyond high school, the CPEC Information Collection and Dissemination Program is well known for its commitment to data quality, responsiveness to users, and the consistency and structure of the data. The increased demand for timely, accurate, and accessible data to...
Topics: ERIC Archive, Information Dissemination, Access to Education, High Schools, Higher Education,...
This paper is a collection of ten policy briefs examining various key elements of the state's public education system. The authors, contributors, and reviewers of the briefs are, for the most part, on the faculty of Arizona's three public universities: Arizona State University, Northern Arizona University, and the University of Arizona. Michael Kelley, of ASU West Campus, and Joseph Tobin, of ASU Tempe Campus, examine Early Childhood Education and Care (ECEC) in the state. They note that there...
Topics: ERIC Archive, Charter Schools, Private Schools, Teacher Effectiveness, Teacher Education Programs,...
Because of the limitations of the traditional approaches to classifying a child's characteristics, a number of authors have proposed to describe children on the basis of a defined set of functional skills or abilities rather than by etiological or deficit category (Bailey et al. (1993); Holt (1957); Linden (1963)). Building on this earlier work, Simeonsson and Bailey (1988) developed the ABILITIES Index (AI), an index designed to assess functional characteristics rather than skills. Although...
Topics: ERIC Archive, Expenditures, Disabilities, Classification, Student Characteristics, Special...
The Unsafe School Choice Option (USCO) (section 9532 of the Elementary and Secondary Education Act (ESEA) of 1965, as amended by the No Child Left Behind Act of 2001) requires that each State receiving funds under the ESEA establish and implement a statewide policy requiring that students attending a persistently dangerous public elementary or secondary school, or students who become victims of a violent criminal offense while in or on the grounds of a public school that they attend, be allowed...
Topics: ERIC Archive, Federal Legislation, Elementary Secondary Education, Public Schools, School Choice,...
This is the second of three articles based on interviews looking at various levels of educational technology leadership and leadership development at ISTE. The first interview with Dr. Leslie Conery examined the need for educational technology leadership and looks at various ways ISTE, as a membership organization, fulfills this need. This interview with ISTE's Chief Executive Officer, Dr. Don Knezek, examines current trends and issues in educational technology and ISTE's role in advocating for...
Topics: ERIC Archive, Leadership, Educational Technology, Stephenson, Chris
Developing an effective capability to protect the homeland is a top national priority. It is also a complex undertaking filled with many challenges. There are so many assets to protect, so many modes of attack available to adversaries, and so many organizations involved, that, understandably, both the conceptual thinking and the capabilities required are still immature. Maturing the conceptual framework and capabilities related to homeland security, the DSB believes, requires a holistic...
Topics: DTIC Archive, DEFENSE SCIENCE BOARD WASHINGTON DC, *HOMELAND SECURITY, DEPARTMENT OF DEFENSE,...
One objective of the U.S. Southern Ocean Global Ocean Ecosystems Dynamics (SO GLOBEC) program is to gain a better understanding of the sea floor bathymetry in the program study area. Much of Marguerite Bay and the adjacent shelf west of the Antarctic Peninsula were poorly charted when the SO GLOBEC program started in 2000. Before the first SO GLOBEC cruise, an improved local area version (ETOPO8.2A) was created from the Smith and Sandwell (1997) topo_8.2.img 2-minute digital gridded bathymetry...
Topics: DTIC Archive, Bolmer, S T, WOODS HOLE OCEANOGRAPHIC INSTITUTION MA, *HIGH RESOLUTION, *BATHYMETRY,...
This Annual Report of the Department of Defense (DoD) Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Program, or CBRNDP, provides information in response to several reporting requirements. First, this report is provided in accordance with 50 USC 1523. (The complete reporting requirement is detailed at annex K.) This report is intended to assess: (1) the overall readiness of the Armed Forces to fight in a chemical-biological warfare environment and steps taken and planned to be...
Topics: DTIC Archive, OFFICE OF THE DEPUTY ASSISTANT SECRETARY OF DEFENSE FOR CHEMICAL AND BIOLOGICAL...
Miraj Khair Ul Wara Ba Zuban Ghausul Wara
Topics: Miraj Khair Ul Wara Ba Zuban Ghausul Wara, Miraj, Khair ul wara, Ghaus ul wara, Meraj
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138
Jun 11, 2021
06/21
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LEGO Club
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The May 2004 issue of the American version of LEGO Magazine , the official "PLAYbook" of the LEGO Club. Originally scanned and posted to Miniland Online .
Topics: LEGO, magazine, LEGO magazines, LEGO Club, American magazines, comics, BIONICLE, LEGO Star Wars,...
The X-38 Crew Rescue Vehicle V-201 space flight test article was designed to achieve an aerodynamically controlled re-entry from orbit in part through the use of two body mounted flaps on the lower rear side. These flaps are actuated by an electromechanical system that is partially exposed to the re-entry environment. These actuators are of a novel configuration and are unique in their requirement to function while exposed to re-entry conditions. The authors are not aware of any other vehicle...
Topics: NASA Technical Reports Server (NTRS), X-38 CREW RETURN VEHICLE, RESCUE OPERATIONS, REENTRY, FLIGHT...
The Aerospace Mechanisms Symposium (AMS) provides a unique forum for those active in the design, production and use of aerospace mechanisms. A major focus is reporting problems and solutions associated with the development and flight certification of new mechanisms. Organized by the Mechanisms Education Association, NASA and Lockheed Martin Space Systems Company (LMSSC) share the responsibility for hosting the AMS. Now in its 37th symposium, the AMS continues to be well attended, attracting...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE SYSTEMS, CONFERENCES, MECHANICAL ENGINEERING,...
A unique foam/multilayer insulation (MLI) combination concept for orbital cryogenic storage was experimentally evaluated using a large-scale hydrogen tank. The foam substrate insulates for ground-hold periods and enables a gaseous nitrogen purge as opposed to helium. The MLI, designed for an on-orbit storage period for 45 days, includes several unique features including a variable layer density and larger but fewer perforations for venting during ascent to orbit. Test results with liquid...
Topics: NASA Technical Reports Server (NTRS), MATHEMATICAL MODELS, CRYOGENIC EQUIPMENT, MULTILAYER...
Rapidly emerging fuel-cell-power technologies may be used to launch a new revolution of electric propulsion systems for light aircraft. Future small electric airplanes using fuel cell technologies hold the promise of high reliability, low maintenance, low noise, and - with the exception of water vapor - zero emissions. An analytical feasibility and performance assessment was conducted by NASA Glenn Research Center's Airbreathing Systems Analysis Office of a fuel-cell-powered, propeller-driven,...
Topics: NASA Technical Reports Server (NTRS), FEASIBILITY ANALYSIS, FUEL CELLS, PROPULSION SYSTEM...
The testing of new technologies aboard the International Space Station (ISS) is facilitated through the use of a passive experiment container, or PEC, developed at the NASA Langley Research Center. The PEC is an aluminum suitcase approximately 2 ft square and 5 in. thick. Inside the PEC are mounted Materials International Space Station Experiment (MISSE) plates that contain the test articles. The PEC is carried to the ISS aboard the space shuttle or a Russian resupply vehicle, where astronauts...
Topics: NASA Technical Reports Server (NTRS), SPACECRAFT POWER SUPPLIES, SOLAR CELLS, SPACEBORNE...
At the NASA Glenn Research Center, NASA Langley Research Center's Flight Optimization System (FLOPS) and the design optimization testbed COMETBOARDS with regression and neural-network-analysis approximators have been coupled to obtain a preliminary aircraft design methodology. For a subsonic aircraft, the optimal design, that is the airframe-engine combination, is obtained by the simulation. The aircraft is powered by two high-bypass-ratio engines with a nominal thrust of about 35,000 lbf. It...
Topics: NASA Technical Reports Server (NTRS), APPROXIMATION, NEURAL NETS, SUBSONIC AIRCRAFT, REGRESSION...
The Dynamic Spin Rig Facility at the NASA Glenn Research Center is used to determine the structural response of rotating engine components without the effects of aerodynamic loading. Recently, this rig's capabilities were enhanced through the replacement of grease-lubricated ball bearings with magnetic bearings. Magnetic bearings offer a number of advantages--the most important here being that they not only fully support the rotor system, but excite it as well. Three magnetic bearings support...
Topics: NASA Technical Reports Server (NTRS), ROTOR BLADES (TURBOMACHINERY), ROTATION, SPIN, ROTOR...
The goal of this project at the NASA Glenn Research Center is to provide fan materials that are safer, weigh less, and cost less than the currently used titanium alloy or polymer matrix composite fans. The proposed material system is a sandwich fan construction made up of thin solid face sheets and a lightweight metal foam core. The stiffness of the sandwich structure is increased by separating the two face sheets by the foam layer. The resulting structure has a high stiffness and lighter...
Topics: NASA Technical Reports Server (NTRS), FAN BLADES, VIBRATION, SANDWICH STRUCTURES, STAINLESS STEELS,...
A suite of atomistic modeling software, called the Alloy Design Workbench, has been developed by the Computational Materials Group at the NASA Glenn Research Center and the Ohio Aerospace Institute (OAI). The main goal of this software is to guide and augment experimental materials research and development efforts by creating powerful, yet intuitive, software that combines a graphical user interface with an operating code suitable for real-time atomistic simulations of multicomponent alloy...
Topics: NASA Technical Reports Server (NTRS), SOFTWARE ENGINEERING, COMPUTERIZED SIMULATION, METAL...
Gears, bearings, and other mechanical elements transmit loads through contacting surfaces. Even if properly designed, manufactured, installed, and maintained, gears and bearings will eventually fail because of the fatigue of the working surfaces. Economical means for extending the fatigue lives of gears and bearings are highly desired, and coatings offer the opportunity to engineer surfaces to extend the fatigue lives of mechanical components. A tungsten-containing diamondlike-carbon coating...
Topics: NASA Technical Reports Server (NTRS), GEARS, COATINGS, FATIGUE LIFE, ALUMINUM OXIDES, CARBURIZING,...
Researchers are constantly pursuing technologies that will increase the performance of gas turbine engines. The aspirated compressor concept discussed here would allow the compression system to perform its task with about one-half of the compressor blades. To accomplish this, the researchers applied boundary layer control to the blades, casing, and hub. This method of boundary layer control consisted of removing small amounts of air from the main flow path at critical areas of the compressor....
Topics: NASA Technical Reports Server (NTRS), GAS TURBINE ENGINES, COMPRESSOR BLADES, BOUNDARY LAYER...
The operation of a packed bed reactor (PBR) involves gas and liquid flowing simultaneously through a fixed-bed of solid particles. Depending on the application, the particles can be various shapes and sizes but are generally designed to force the two fluid phases through a tortuous route of narrow channels connecting the interstitial space. The PBR is the most common type of reactor in industry because it provides for intimate contact and high rates of transport between the phases needed to...
Topics: NASA Technical Reports Server (NTRS), CHEMICAL REACTIONS, MICROGRAVITY, INTERSTITIALS, PRESSURE...
The port-side photovoltaic power module (P6) was activated on the International Space Station in December 2000. P6 provides electrical power to channels 2B and 4B to operate ISS power loads. A P6 is shown in the preceding photograph. This article highlights the work done at the NASA Glenn Research Center to calculate the on-orbit degradation of the P6 solar array wings (SAWs) using on-orbit data from December 2000 to February 2003. During early ISS operations, the 82 strings of photovoltaic...
Topics: NASA Technical Reports Server (NTRS), INTERNATIONAL SPACE STATION, SOLAR ARRAYS, PERFORMANCE TESTS,...
As flight progressed from propellers to jets to rockets, the propulsive energy grew exponentially. With the development of rocket-only boosted vehicles, energy management of these boost-gliders became a distinct requirement for the unpowered return to base, alternate landing site, or water-parachute landing, starting with the X-series rocket aircraft and terminating with the present-day Shuttle. The problem presented here consists of: speed (kinetic energy) - altitude (potential energy) - steep...
Topics: NASA Technical Reports Server (NTRS), BOOSTGLIDE VEHICLES, POTENTIAL ENERGY, GLIDING, SPACECRAFT...
An ultrasonic guided wave scan system was used to nondestructively monitor damage over time and position in a C/enhanced SiC sample that was creep tested to failure at 1200 C in air at a stress of 69 MPa (10 ksi). The use of the guided wave scan system for mapping evolving oxidation profiles (via porosity gradients resulting from oxidation) along the sample length and predicting failure location was explored. The creep-rupture tests were interrupted for ultrasonic evaluation every two hours...
Topics: NASA Technical Reports Server (NTRS), SILICON CARBIDES, CREEP RUPTURE STRENGTH, POROSITY,...
The NASA Glenn Research Center is sponsoring efforts to develop advanced monopropellant technology. The focus has been on monopropellant formulations composed of an aqueous solution of hydroxylammonium nitrate (HAN) and a fuel component. HAN-based monopropellants do not have a toxic vapor and do not need the extraordinary procedures for storage, handling, and disposal required of hydrazine (N2H4). Generically, HAN-based monopropellants are denser and have lower freezing points than N2H4. The...
Topics: NASA Technical Reports Server (NTRS), MONOPROPELLANTS, CATALYSTS, AQUEOUS SOLUTIONS, AMMONIUM...
An airplane is the ideal vehicle for gathering atmospheric data over a wide range of locations and altitudes, while having the freedom to maneuver to regions of scientific interest. Solar energy is available in abundance on Venus. Venus has an exoatmospheric solar flux of 2600 W/m2, compared with Earth's 1370 W/m2. The solar intensity is 20 to 50 percent of the exoatmospheric intensity at the bottom of the cloud layer, and it increases to nearly 95 percent of the exoatmospheric intensity at 65...
Topics: NASA Technical Reports Server (NTRS), SPACE EXPLORATION, VENUS SURFACE, SOLAR RADIATION,...
On July 10, 2003, the NASA Glenn Research Center flywheel team experimentally demonstrated a two-flywheel-module system that simultaneously provided attitude control in a single axis and regulated power. The test was conducted using the D1 flywheel module and the high-speed shaft (HSS) in the High Energy Flywheel Facility (HEFF). Both of these flywheel modules consist of a magnetically levitated rotor with an integral motor/generator, a vacuum housing, and mechanical touchdown bearings. Energy...
Topics: NASA Technical Reports Server (NTRS), FLYWHEELS, ENERGY STORAGE, VOLTAGE REGULATORS, ATTITUDE...
NASA is in the process of designing the James Webb Space Telescope. This telescope will investigate images of objects in deep space (stars, galaxies, etc.) by using light in the infrared region of the light spectrum. To make such observations, the telescope must have light sensors that operate at very cold temperatures, near absolute zero. To achieve this low-temperature tolerance, designers must place the light sensors behind a Sun shield that will prevent sunlight, and its heat, from reaching...
Topics: NASA Technical Reports Server (NTRS), CRYOGENICS, JAMES WEBB SPACE TELESCOPE, PROTOTYPES, ELECTRIC...
An adaptive feedback control method was demonstrated that suppresses thermoacoustic instabilities in a liquid-fueled combustor of a type used in aircraft engines. Extensive research has been done to develop lean-burning (low fuel-to-air ratio) combustors that can reduce emissions throughout the mission cycle to reduce the environmental impact of aerospace propulsion systems. However, these lean-burning combustors are susceptible to thermoacoustic instabilities (high-frequency pressure waves),...
Topics: NASA Technical Reports Server (NTRS), ADAPTIVE CONTROL, COMBUSTION CHAMBERS, ENGINE CONTROL,...
A recently invented method of fabricating periodic or otherwise ordered nanostructures involves the use of chaperonin polypeptides. The method is intended to serve as a potentially superior and less expensive alternative to conventional lithographic methods for use in the patterning steps of the fabrication of diverse objects characterized by features of the order of nanometers. Typical examples of such objects include arrays of quantum dots that would serve as the functional building blocks of...
Topics: NASA Technical Reports Server (NTRS), BIOCHEMISTRY, FABRICATION, FOLDING, NANOSTRUCTURES (DEVICES),...
A proposed docking mechanism would form a ball-and-socket joint in the docked condition. The mechanism could tolerate significant initial misalignment because it would include an alignment cone that would guide the ball into the socket. Like other ball-and-socket joints, the joint would have three rotational degrees of freedom. This docking mechanism would be a successor to the one described in Passive Capture Joint With Three Degrees of Freedom (MFS-31146), NASA Tech Briefs, Vol. 22, No. 7...
Topics: NASA Technical Reports Server (NTRS), DOCKING, JOINTS (JUNCTIONS), MECHANICAL ENGINEERING,...
Concepts are being investigated for exploratory missions to Mars based on Bioinspired Engineering of Exploration Systems (BEES), which is a guiding principle of this effort to develop biomorphic explorers. The novelty lies in the use of a robust telecom architecture for mission data return, utilizing multiple local relays (including the lander itself as a local relay and the explorers in the dual role of a local relay) to enable ranges ~10 to 1,000 km and downlink of color imagery. As...
Topics: NASA Technical Reports Server (NTRS), AUTONOMOUS NAVIGATION, MARS EXPLORATION, MARS LANDING SITES,...
A scalable architecture for wireless digital data and voice communications via ad hoc networks has been proposed. Although the details of the architecture and of its implementation in hardware and software have yet to be developed, the broad outlines of the architecture are fairly clear: This architecture departs from current commercial wireless communication architectures, which are characterized by low effective bandwidth per user and are not well suited to low-cost, rapid scaling in large...
Topics: NASA Technical Reports Server (NTRS), COMMUNICATION NETWORKS, DIGITAL DATA, VOICE COMMUNICATION,...
A compact, dual-frequency, dual-polarization, wide-angle-scanning antenna system has been developed as part of an airborne instrument for measuring rainfall. This system is an upgraded version of a prior single-frequency airborne rain radar antenna system and was designed to satisfy stringent requirements. One particularly stringent combination of requirements is to generate two dual-polarization (horizontal and vertical polarizations) beams at both frequencies (13.405 and 35.605 GHz) in such a...
Topics: NASA Technical Reports Server (NTRS), AIRBORNE RADAR, ANTENNA DESIGN, METEOROLOGICAL RADAR, RAIN,...
Russian game magazine, «Навигатор Игрового Мира», Game World Navigator, issue 84, may 2004
Topics: Game World Navigator, Навигатор Игрового Мира
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833
Nov 23, 2013
11/13
by
UBM TechWeb
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Topic: Game Developer Magazine
