INGLATERRA (Reino Unido). Mapas generales (1764-1792?). 1:400000

Carta arrumbada que comprende además la costa oriental de Irlanda e Irlanda del Norte y la meridional de EscociaDedicatoria : "To His Highnesse the Duke of Cumberland"Fecha de publicación deducida teniendo en cuenta el período en el que pudieron haber trabajado juntos los tres editoresEscalas gráficas de 30 millas grandes de 52 al grado [= 15,9 cm], 30 millas medianas de 60 al grado [= 13,15 cm] y 30 millas pequeñas de 70 al grado [= 11,4 cm]. Coordenadas referidas al meridiano de Londres (O 7°24'--E 3°38'/N 55°41'--N 49°57'). Red geográfica de 20' en 20'. Orientado con lis en nudos de rumbos, constando en uno de ellos, la mención nominal de todos los vientosOrografía de perfil. Indica bancos y bajosLíneas divisorias entre los condados diferenciados por colorDos tablas de signos convencionales para indicar los distintos tipos de poblción, obispados, parroquias, universidades, carreteras, límites de los distintos tipos de divisiones administrativas y batallasTítulo y dedicatoria enmarcados por cartela decorada con motivos alegóricos a la guerra, vegetales y ángeles ; otra enmarcando pie de imprenta y una tabla de signos convencionales decorado con motivos vegetalesForma parte de la Colección MendozaInserta : "The Islands of Scilly

Temporal representations for synthetic characters

Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2001.Includes bibliographical references (p. 91-93).Inspired by recent work in ethology and animal training, we integrate representations for time and rate into a behavior-based architecture for autonomous virtual creatures. The resulting computational model of affect and action selection allows these creatures to discover and refine their understanding of apparent temporal causality relationships which may or may not involve self-action. The fundamental action selection choice that a creature must make in order to satisfy its internal needs is whether to explore, react or exploit. In this architecture, that choice is informed by an understanding of apparent temporal causality, the representation for which is integrated into the representation for action. The ability to accommodate changing ideas about causality allows the creature to exist in and adapt to a dynamic world. Not only is such a model suitable for computational systems, but its derivation from biological models suggests that it may also be useful for gaining a new perspective on learning in biological systems. The implementation of a complete character built using this architecture is able to reproduce a variety of conditioning phenomena, as well as learn using a training technique used with live animals.by Robert Carrington Burke.S.M

A comparison of blade tip timing data analysis methods

The experimental determination of the vibration characteristics of rotating engine blades is very important for fatigue failure considerations. One of the most promising techniques for measuring the frequency of blade vibrations is blade tip timing. In this paper, three vibration analysis methods were specifically formulated and applied to the tip timing problem for the first time, using data obtained from a simple mathematical blade tip timing simulation. The results from the methods were compared statistically in order to determine which of the techniques is more suitable. One of the methods, the global autoregressive instrumental variables approach, produced satisfactory results at realistic noise levels. However, all of the techniques produced biased results under certain circumstances

Characterization of 6.1 Å III-V materials grown on GaAs and Si: a comparison of GaSb/GaAs epitaxy and GaSb/AlSb/Si epitaxy

GaSb p–i–n photodiodes were grown on GaAs and Si, using interfacial misfit arrays, and on native GaSb. For the samples grown on GaAs and Si, high-resolution transmission electron microscopy images revealed interface atomic periodicities in agreement with atomistic modeling. Surface defect densities of ~View the MathML source were measured for both samples. Atomic force microscopy scans revealed surface roughnesses of around 1.6 nm, compared with 0.5 nm for the sample grown on native GaSb. Dark current and spectral response measurements were used to study the electrical and optoelectronic properties of all three samples

GALES (Reino Unido). S. Mapas generales (17). 1.107000

Dedicatoria : "Is this Royal Highness George Prince of Wales Electoral Prince of Walles Electoral Prince of Bruniwich Lunenburgh Duke of Cornwall and Edinburg &c. and Knight of the most noble order of the Garter. This map of that pant of your Highnefs's Principality call'd South Wales, is most Humbly Dedicated and Presented, by May it please your Royal Highness, your Hishness's most Obedient most Humble servt. Eman Bowen"Escala gráfica de 5 millas estatutarias [= 7,5 cm]. Coordenadas referidas al meridiano de Londres (O 5°35''--O 4°47'/N 52°30'--N 51°16') Recuadro geográfico de 5' en 5'Orografía por perfilesDestaca especialmente las divisiones administrativasRed de cuadrícula para localizar distintos puntos en el mapa y cuya relación se recoge en el margen inferiorTabla de signos convencionales para indicar caminos, iglesias, etcTítulo y dedicatoria en dos cartelas barrocasInserta cinco perspectivas de ciudades : Brecknock, Carmarthen, Haverford West, Tenby y Swansey delineadas por Hughe

Book reviews

Teaching/Communication/Extension/Profession,

InSb-based quantum dot nanostructures for mid-infrared photonic devices

Novel InSb quantum dot (QD) nanostructures grown by molecular beam epitaxy (MBE) are investigated in order to improve the performance of light sources and detectors for the technologically important mid-infrared (2-5 μm) spectral range. Unlike the InAs/GaAs system which has a similar lattice mismatch, the growth of InSb/InAs QDs by MBE is a challenging task due to Sb segregation and surfactant effects. These problems can be overcome by using an Sb-As exchange growth technique to realize uniform, dense arrays (dot density ~1012 cm-2) of extremely small (mean diameter ~2.5 nm) InSb submonolayer QDs in InAs. Light emitting diodes (LEDs) containing ten layers of InSb QDs exhibit bright electroluminescence peaking at 3.8 μm at room temperature. These devices show superior temperature quenching compared with bulk and quantum well (QW) LEDs due to a reduction in Auger recombination. We also report the growth of InSb QDs in InAs/AlAsSb ‘W’ QWs grown on GaSb substrates which are designed to increase the electron-hole (e-h) wavefunction overlap to ~75%. These samples exhibit very good structural quality and photoluminescence peaking near 3.0 μm at low temperatures

Co-Firing Oil Shale with Coal and Other Fuels for Improved Efficiency and Multi-Pollutant Control

Oil shale is an abundant, undeveloped natural resource which has natural sorbent properties, and its ash has natural cementitious properties. Oil shale may be blended with coal, biomass, municipal wastes, waste tires, or other waste feedstock materials to provide the joint benefit of adding energy content while adsorbing and removing sulfur, halides, and volatile metal pollutants, and while also reducing nitrogen oxide pollutants. Oil shale depolymerization-pyrolysis-devolatilization and sorption scoping studies indicate oil shale particle sorption rates and sorption capacity can be comparable to limestone sorbents for capture of SO2 and SO3. Additionally, kerogen released from the shale was shown to have the potential to reduce NOx emissions through the well established “reburning” chemistry similar to natural gas, fuel oil, and micronized coal. Productive mercury adsorption is also possible by the oil shale particles as a result of residual fixed-carbon and other observed mercury capture sorbent properties. Sorption properties were found to be a function particle heating rate, peak particle temperature, residence time, and gas-phase stoichmetry. High surface area sorbents with high calcium reactivity and with some adsorbent fixed/activated carbon can be produced in the corresponding reaction zones that exist in a standard pulverized-coal or in a fluidized-bed combustor

The crystal structure of PD1, a Haemophilus surface fibril domain

The Haemophilus surface fibril (Hsf) is an unusually large trimeric autotransporter adhesin (TAA) expressed by the most virulent strains of H. influenzae. Hsf is known to mediate adhesion between pathogen and host, allowing the establishment of potentially deadly diseases such as epiglottitis, meningitis and pneumonia. While recent research has suggested that this TAA might adopt a novel `hairpin-like' architecture, the characterization of Hsf has been limited to in silico modelling and electron micrographs, with no high-resolution structural data available. Here, the crystal structure of Hsf putative domain 1 (PD1) is reported at 3.3 Å resolution. The structure corrects the previous domain annotation by revealing the presence of an unexpected N-terminal TrpRing domain. PD1 represents the first Hsf domain to be solved, and thus paves the way for further research on the `hairpin-like' hypothesis.Peer reviewe