Effect of TiO2 addition on structure, solubility and crystallisation of phosphate invert glasses for biomedical applications

NOTICE: this is the author’s version of a work that was accepted for publication in JOURNAL OF NON-CRYSTALLINE SOLIDS. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in JOURNAL OF NON-CRYSTALLINE SOLIDS, [VOL 356, ISSUE 44-49, (2001)] DOI: 10.1016/j.jnoncrysol.2010.03.02

Capabilities and applications of the Program to Optimize Simulated Trajectories (POST). Program summary document

The capabilities and applications of the three-degree-of-freedom (3DOF) version and the six-degree-of-freedom (6DOF) version of the Program to Optimize Simulated Trajectories (POST) are summarized. The document supplements the detailed program manuals by providing additional information that motivates and clarifies basic capabilities, input procedures, applications and computer requirements of these programs. The information will enable prospective users to evaluate the programs, and to determine if they are applicable to their problems. Enough information is given to enable managerial personnel to evaluate the capabilities of the programs and describes the POST structure, formulation, input and output procedures, sample cases, and computer requirements. The report also provides answers to basic questions concerning planet and vehicle modeling, simulation accuracy, optimization capabilities, and general input rules. Several sample cases are presented

Six-degree-of-freedom program to optimize simulated trajectories (6D POST). Volume 1: Formulation manual

The basic equations and models used in a computer program (6D POST) to optimize simulated trajectories with six degrees of freedom were documented. The 6D POST program was conceived as a direct extension of the program POST, which dealt with point masses, and considers the general motion of a rigid body with six degrees of freedom. It may be used to solve a wide variety of atmospheric flight mechanics and orbital transfer problems for powered or unpowered vehicles operating near a rotating oblate planet. Its principal features are: an easy to use NAMELIST type input procedure, an integrated set of Flight Control System (FCS) modules, and a general-purpose discrete parameter targeting and optimization capability. It was written in FORTRAN 4 for the CDC 6000 series computers

Program to Optimize Simulated Trajectories (POST). Volume 1: Formulation manual

A general purpose FORTRAN program for simulating and optimizing point mass trajectories (POST) of aerospace vehicles is described. The equations and the numerical techniques used in the program are documented. Topics discussed include: coordinate systems, planet model, trajectory simulation, auxiliary calculations, and targeting and optimization

A prototype for large site analysis : 1000 acres in Spotsylvania, Virginia

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1987.Bibliography: leaves 110-112.by Henry G. Brauer and Karen Kelsey.M.S

Accelerometer and global positioning system measurement of recovery of community ambulation across the first 6 months after stroke: an exploratory prospective study

Objective: To characterize community ambulation and determine if it changes across the first 6 months after discharge from hospital after stroke

Development of thin-film based sensors for temperature and tool wear monitoring during machining = [Entwicklung von Dünnschichtsensoren zur Überwachung von Temperatur und Werkzeugverschleiß während der Zerspanung]

Die Entwicklung von Dünnschichtsensoren zur Temperatur- und Verschleißmessung in der Zerspanung wird in diesem Artikel präsentiert. Ein funktionales Dünnschichtsystem, bestehend aus einer Al$_{2}$O$_{3}$-Isolationsschicht, einer mittels Photolithographie strukturierten Chrom-Sensorschicht sowie einer Al$_{2}$O$_{3}$-Verschleiß- und Isolationsschutzschicht, wird per physikalischer Gasphasenabscheidung (engl. physical vapor deposition, PVD) auf der Oberfläche von Hartmetall-Wendeschneidplatten abgeschieden. Erste Proben konnten mit Sensoren gefertigt werden und in Labor- sowie Zerspanversuchen hinsichtlich ihrer Funktionalität getestet werden. Die werkzeugintegrierten Sensoren können zur In-process Messung der Temperaturen auf der Spanfläche im oder in der Nähe des Werkzeug-Span-Kontakts sowie zur Bestimmung der Verschleißmarkenbreite eingesetzt werden. Die Kenntnis dieser wichtigen Prozesskenngrößen bietet die Möglichkeit neuartige In-Process-Regelungsmechanismen zu entwickeln, welche eine gezielte Einstellung der Surface Integrity und damit eine Verbesserung der Leistungsfähigkeit und der Lebensdauer des Bauteils ermöglichen

Is It Science Yet?: Intelligent Design Creationism and the Constitution

On several occasions during the last eighty years, states have attempted to either prohibit the teaching of evolution in public school science classes or counter the teaching of evolution with mandatory references to the religious doctrine of creationism. The Supreme Court struck down examples of the first two generations of these statutes, holding that they violated the Establishment Clause of the First Amendment. A third generation of creationist legislation is now being proposed. Under this new generation of creationism legislation, science teachers would present so-called “intelligent design” theory as an alternative to evolution. Intelligent design theory asserts that a supernatural intelligence intervened in the natural world to dictate the nature and ordering of all biological species, which do not evolve from lower-to higher-order beings. This article considers whether these intelligent design creationism proposals can survive constitutional scrutiny. The authors analyze the religious, philosophical, and scientific details of intelligent design theory, and assess these details in light of the constitutional doctrine developed by the Court in its previous creationism decisions. The Article discusses several factors that pose problems for intelligent design theory, including the absence of objective scientific support for intelligent design, evidence of strong links between intelligent design and religious doctrine, the use of intelligent design to limit the dissemination of scientific theories that are perceived as contradicting religious teachings, and the fact that the irreducible core of intelligent design theory is what the Court has called the “manifestly religious concept of a God or Supreme Being. Based on these details, the authors conclude that intelligent design theory cannot survive scrutiny under the constitutional framework used by the Court to invalidate earlier creationism mandates

Global existence and asymptotic behaviour in the future for the Einstein-Vlasov system with positive cosmological constant

The behaviour of expanding cosmological models with collisionless matter and a positive cosmological constant is analysed. It is shown that under the assumption of plane or hyperbolic symmetry the area radius goes to infinity, the spacetimes are future geodesically complete, and the expansion becomes isotropic and exponential at late times. This proves a form of the cosmic no hair theorem in this class of spacetimes