220
220
Jun 1, 2010
06/10
by
Mayaud, P. N
texts
eye 220
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Estimate of decrease with altitude in field S due to diurnal variation
Topics: DIURNAL VARIATIONS, FIELD STRENGTH, DIURNAL VARIATION, FIELD STRENGTH
460
460
Jun 17, 2010
06/10
by
Silin, V. P
texts
eye 460
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comment 0
Nonlinear dependence of plasma conductivity on electric field strength in strong electric and magnetic field
Topics: ELECTRIC FIELD STRENGTH, MAGNETIC FIELD, NONLINEARITY, PLASMA CONDUCTIVITY, ELECTRIC FIELDS, FIELD...
22
22
Apr 30, 2021
04/21
by
Norsuzila Ya’acob, Noraisyah Tajudin, Muhammad Rezza Alui, Nani Fadzlina Naim4 , Murizah Kassim, Wan Norsyafizan Wan Muhamad
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eye 22
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Ku-Band signal is often used for satellite communication mainly for direct to home (DTH) broadcasting. One of the major issues using this band is that the signal will be affected by raindrops. Raindrops absorb and scatter signal that operates at a frequency of more than 10 GHz. However, studies have been done to predict and measure the rainfall rate and rain attenuation. The rain attenuation in Ku-Band range and the rain rate were measured at satellite receiving dish, pointed towards the...
Topics: BER, DTT, DVB-T2, Field Strength, MER
18
18
Apr 30, 2021
04/21
by
Norsuzila Ya’acob, Noraisyah Tajudin, Mashira Meri, Mohamad Zamiri, Azita Laily Yusof, Suzi Seroja Sarnin, Azlina Idris
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eye 18
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DVB-T2 (Digital Video Broadcasting-Second Generation Terrestrial) is one of the latest technical standards being developed by the DVB Project for DTT (Digital Terrestrial Television). It is also known as digital broadcasting trough terrestrial system since 2006 and is an extension of the DVB-T system as a second generation program to improve efficiency of the total system. It is important to perform a research on the performance of DVB-T2 because Malaysia has launched the free-to-air digital TV...
Topics: BER, DTT, DVB-T2, Field Strength, MER
217
217
May 6, 2010
05/10
by
Someroski, F. W.; Tischer, F. J
texts
eye 217
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Field intensity, guide wavelengths, and attenuation of grooved waveguide
Topics: ATTENUATION COEFFICIENTS, WAVEGUIDE, WAVELENGTH, FIELD EMISSION, FIELD STRENGTH, GROOVES,...
Topics: manualzilla, manuals, Industrial & lab equipment, Measuring Field strength meters
Topics: manualzilla, manuals, Industrial & lab equipment, Measuring Field strength meters
Journal of Research of the National Bureau of Standards
Topics: Loop-antenna field strength, magnetic field-strength standard, mutual inductance of coaxial...
18
18
Jan 8, 2022
01/22
by
@ impact
texts
eye 18
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Nonlinear optics is the study of phenomena that occur as a consequence of the modification of the optical properties of a material system by the presence of light. Nonlinear optical phenomena are “nonlinear” in the sense that they occur when the response of a material system to an applied field depends in a nonlinear manner on the strength of the optical field. Typically, only laser light is sufficiently intense to modify the optical properties of a material system. In nonlinear optics,
Topics: Interatomic, Laser, Linear Optics, Nonlinear Optics, Intensity, Field Strength
Nowadays, there has been an increase and dependent items that affect the quality of the signals such as the properties of substances in the buildings, objects and humans’ movements, electronic equipment. In this study, the effects of electromagnetic interference on the functional usage of mobile communications are examined. The indoor and outdoor attenuation characteristics of 2G, 3G and 4G frequency bands are investigated. Field strength measurements are conducted in university...
Topics: Attenuation characteristics, electromagnetic propagation, field strength measurement, transmission...
222
222
May 27, 2011
05/11
by
MASTRUP, FRITHJO
texts
eye 222
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THE FOLLOWING WORK DESCRIBES THE EXPERIMENTAL DETERMINATION OF THE ABSOLUTE OSCILLATOR STRENGTHS OF SEVERAL N II-LINES. THE LIGHT SOURCE WAS THE PLASMA OF A WALL-STABILIZED ENCLOSED [CYLINDRICAL] ARC IN PURE NITROGEN. THE PARAMETERS OF THIS PLASMA NEAR THE AXIS OF THE ARC WERE CALCULATED FROM THE MEASURED TOTAL INTENSITY OF THE HYDROGEN-LIKE TRIPLET-MULTIPLET OF THE SERIES 2P3D-2P4F. IT WAS HERE ASSUMED THAT THE OSCILLATOR STRENGTHS OF THIS MULTIPLET CAN BE CALCULATED BY THE BATES AND DAMGAARD...
Topics: RADIO FREQUENCIES, TRANSMITTERS, TELEMETRY, SURFACE PROPERTIES, LAUNCH VEHICLES, PREDICTIONS, RADIO...
182
182
May 31, 2011
05/11
by
Wei, Chenyu; Cho, Kyeongjae; Srivastava, Deepa
texts
eye 182
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The tensile yielding of multiwall carbon nanotubes (MWCNTs) has been studied using Molecular Dynamics simulations and a Transition State Theory based model. We find a strong dependence of the yielding on the strain rate. A critical strain rate has been predicted above/below which yielding strain of a MWCNT is larger/smaller than that of the corresponding single-wall carbon nanotubes. At experimentally feasible strain rate of 1% /hour and T = 300K, the yield strain of a MWCNT is estimated to be...
Topics: ANTENNA RADIATION PATTERNS, DIPOLE ANTENNAS, MODELS, FIELD STRENGTH, FAR FIELDS
American Electronics (Ameco) - 95-130 - SWR/RF Power/Field Strength Meter - Operation
Topics: American Electronics, Ameco, SWR Meter, RF Power Meter, Field Strength Meter
216
216
Jun 27, 2010
06/10
by
Favero, L. R
texts
eye 216
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Digital computer simulation of SNAP 8 power conversion system G startup and shutdown for systems analysis
Topics: BIOENGINEERING, ELECTROKINETICS, ERYTHROCYTES, ELECTRIC CHARGE, ELECTRIC FIELD STRENGTH,...
286
286
May 28, 2011
05/11
by
Goyal, Rohit; Jain, Raj; Goyal, Mukul; Fahmy, Sonia; Vandalore, Bobby; vonDeak, Thoma
texts
eye 286
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This report presents a survey of the traffic management Issues in the design and implementation of satellite Asynchronous Transfer Mode (ATM) networks. The report focuses on the efficient transport of Transmission Control Protocol (TCP) traffic over satellite ATM. First, a reference satellite ATM network architecture is presented along with an overview of the service categories available in ATM networks. A delay model for satellite networks and the major components of delay and delay variation...
Topics: GEOMAGNETISM, FIELD STRENGTH, FLUX (RATE), RADIATION BELTS, HAZARDS, EARTH ORBITAL ENVIRONMENTS
248
248
May 27, 2011
05/11
by
NON
texts
eye 248
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A polyimide fiber having textile physical property characteristics and the process of melt extruding same from a polyimide powder. Polyimide powder formed as the reaction product of the monomers 3.4'-ODA and ODPA, and end- capped with phthalic anhydride to control the molecular weight thereof, is melt extruded in the temperature range of 340 C. to 360 C. and at heights of 100.5 inches. 209 inches and 364.5 inches. The fibers obtained have a diameter in the range of 0.0068 inch to 0.0147 inch; a...
Topics: DIELECTRICS, TELEMETRY, ENCLOSURE, FAIRINGS, INSULATION, LAUNCH VEHICLES, PREDICTIONS, SURFACE...
63
63
Jun 12, 2020
06/20
by
Prestel s.r.l.
texts
eye 63
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comment 0
Manuale del "Misuratore di intensità di campo – Modello MC 16". Non datato; il modello era pubblicizzato almeno dal 1977.
Topics: manuale, campi elettromagnetici, misuratore di campo, manual, electromagnetic fields, field...
262
262
Jun 18, 2010
06/10
by
Balanis, C. A
texts
eye 262
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Fabry-Perot interferometer to measure dielectric constants and loss tangents at V-band
Topics: ELECTRIC FIELD STRENGTH, TANGENTS, DIELECTRIC CONSTANT, ELECTRIC FIELD STRENGTH, FABRY-PEROT...
471
471
Jul 11, 2010
07/10
by
NON
texts
eye 471
favorite 4
comment 0
The space shuttle is discussed as a reusable space vehicle operated as a transportation system for space missions in low earth orbit. Space shuttle studies and operational capabilities are reported for potential missions indicating that about 38 percent are likely to be spacelab missions with the remainder being the replacement, revisit, or retrieval of automated spacecraft.
Topics: ELECTROMAGNETIC FIELDS, ENERGY DISTRIBUTION, WAVEGUIDES, ANTENNA RADIATION PATTERNS,...
782
782
Jul 26, 2010
07/10
by
Poinsatte, Philip E
texts
eye 782
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comment 0
Local heat transfer coefficients from a smooth and roughened NACA 0012 airfoil were measured using a steady state heat flux method. Heat transfer measurements on the specially constructed 0.533 meter chord airfoil were made both in flight on the NASA Lewis Twin Otter Research Aircraft and in the NASA Lewis Icing Research Tunnel (IRT). Roughness was obtained by the attachment of small, 2 mm diameter, hemispheres of uniform size to the airfoil surface in four distinct patterns. The flight data...
Topics: ELECTRIC CURRENT, MAGNETIC FIELDS, SPACE STATIONS, TRANSMISSION LINES, CIRCUITS, ELECTROMAGNETIC...
223
223
Jul 5, 2010
07/10
by
Riotte, A
texts
eye 223
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comment 0
No Abstract Available
Topics: EARTH IONOSPHERE, ELECTROSTATIC CHARGE, FIELD STRENGTH, ROCKET FLIGHT, MAGNETIC MEASUREMENT,...
This study presents a Generalized Regression Neural network GRNN based approach to wireless communication network field strength prediction. As case study, the rural area between the cities of Bauchi and Gombe, Nigeria, was considered. The GRNN based predictor was created, validated and tested with field strength data recorded from multiple Base Transceiver Stations at a frequency of 1800MHz. Results indicate that the GRNN based model with Root Mean Squared Error RMSE value of 5.8dBm offers...
Topics: Artificial Intelligence, Field Strength, Generalized Regression Neural Network, Okumura Model, COST...
This Memorandum presents a simple analytical technique for predicting the RF electric field strength inside an enclosed volume in which radio frequency radiation occurs. The technique was developed to predict the radio frequency (RF) field strength within a launch vehicle's fairing from payloads launched with their telemetry transmitters radiating and to the impact of the radiation on the vehicle and payload. The RF field strength is shown to be a function of the surface materials and surface...
Topics: NASA Technical Reports Server (NTRS), RADIO FREQUENCIES, PREDICTIONS, RADIO WAVES, ENCLOSURE,...
296
296
Jul 10, 2010
07/10
by
Petrozzi, M. T.; Milam, M. D.; Mellenthin, J. A
texts
eye 296
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Experimental aerodynamic investigations were conducted in a 3.5-foot hypersonic wind tunnel. The model used for this test was a 0.010-scale of the Configuration 2 Space Shuttle Orbiter and the External Tank. Six-component aerodynamic force and moment data were recorded over an angle of attack range from -8 deg to 30 deg at 0 deg and 5 deg angles of sideslip. Data was also recorded during beta sweeps of -8 deg to 10 deg at angles of attack of -10 deg, 0 deg, and 30 deg. All testing was done at...
Topics: DISSOCIATION, ELECTRIC FIELDS, MOLECULAR SPECTROSCOPY, DEUTERIUM, ELECTRIC FIELD STRENGTH,...
410
410
May 29, 2011
05/11
by
Lyle, Karen H.; Jackson, Karen E.; Fasanella, Edwin L
texts
eye 410
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comment 0
Recent advances in computational speed have made aircraft and spacecraft crash simulations using an explicit, nonlinear, transient-dynamic, finite element analysis code more feasible. This paper describes the development of a simple landing gear model, which accurately simulates the energy absorbed by the gear without adding substantial complexity to the model. For a crash model, the landing gear response is approximated with a spring where the force applied to the fuselage is computed in a...
Topics: GEOMAGNETIC TAIL, EARTH MAGNETOSPHERE, FLUX, FIELD STRENGTH, PLASMAS (PHYSICS), SOLAR WIND,...
553
553
May 23, 2011
05/11
by
Gillies, D. C.; Lehoczky, S. L.; Szofran, F. R.; Watring, D. A.; Alexander, H. A.; Jerman, G. A
texts
eye 553
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comment 0
As a solid solution semiconductor having, a large separation between liquidus and solidus, mercury cadmium telluride (MCT) presents a formidable challenge to crystal growers desiring an alloy of high compositional uniformity. To avoid constitutional supercooling during Bridgman crystal growth it is necessary to solidify slowly in a high temperature gradient region. The necessary translation rate of less than 1 mm/hr results in a situation where fluid flow induced by gravity on earth is a...
Topics: FIELD STRENGTH, TRANSMITTERS, RADIO FREQUENCIES, ENCLOSURE, ELECTROMAGNETIC FIELDS, PREDICTIONS,...
R&D Report 1956-26 : The service area of the Meldrum television transmitter. R.S. Sandell The service area of the Meldrum television transmitter conforms with that predicted from the site tests. Most of north-east Scotland, east of a line from Burghead to Montrose, is within the nominal (100 UV/m) service area. The east coast of Sutherland and part of Caithness receive a fringe service.
Topics: meldrum, transmitter, strength, interference, contour, horizontal, aberdeen, field, field strength,...
This study proposes Artificial Neural Network ANN based field strength prediction models for the rural areas of Abuja, the federal capital territory of Nigeria. The ANN based models were created on bases of the Generalized Regression Neural network GRNN and the Multi Layer Perceptron Neural Network MLP NN . These networks were created, trained and tested for field strength prediction using received power data recorded at 900MHz from multiple Base Transceiver Stations BTSs distributed across the...
Topics: Artificial Intelligence, Field Strength, Generalized Regression Neural Network, Multi-Layer...
248
248
May 23, 2011
05/11
by
Pelekasis, Nikolaos A.; Acrivos, Andrea
texts
eye 248
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comment 0
The steady laminar flow of a well-mixed suspension of monodisperse solid spheres, convected steadily past a horizontal flat plate and sedimenting under the action of gravity, is examined. It is shown that, in the limit as Re approaches infinity and epsilon approaches 0, where Re is the bulk Reynolds number and epsilon is the ratio of the particle radius a to the characteristic length scale L, the analysis for determining the particle concentration profile has several aspects in common with that...
Topics: ISOTROPY, FIELD STRENGTH, RADIATIVE TRANSFER, REFRACTIVITY, CRYSTAL STRUCTURE, OPTICAL THICKNESS,...
This Memorandum presents a simple analytical technique for predicting the RF electric field strength inside an enclosed volume in which radio frequency radiation occurs. The technique was developed to predict the radio frequency (RF) field strength within a launch vehicle's fairing from payloads launched with their telemetry transmitters radiating and to the impact of the radiation on the vehicle and payload. The RF field strength is shown to be a function of the surface materials and surface...
Topics: NASA Technical Reports Server (NTRS), DIELECTRICS, ELECTRIC FIELD STRENGTH, ELECTROMAGNETIC FIELDS,...
R&D Report 1957-09 : The service area of the temporary television transmitter at Sandale. D.W. Taplin, D.F. Cooney The report gives the results of a survey of the service area of the temporary television transmitter at Sandale, Cumberland. It is shown that a service is provided to many parts of Cumberland and to a small area of south-west Scotland.
Topics: transmitter, temporary, sandale, horizontal, television, aerial, penrith, tbe, television...
390
390
May 23, 2011
05/11
by
Catapang, David R
texts
eye 390
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comment 0
Control law design for rotorcraft fly-by-wire systems normally attempts to decouple angular responses using fixed-gain crossfeeds. This approach can lead to poor decoupling over the frequency range of pilot inputs and increase the load on the feedback loops. In order to improve the decoupling performance, dynamic crossfeeds may be adopted. Moreover, because of the large changes that occur in rotorcraft dynamics due to small changes about the nominal design condition, especially for...
Topics: GEOMAGNETISM, PLASMAS (PHYSICS), PLASMA HEATING, SOLAR WIND, FIELD STRENGTH, SOLAR STORMS, MAGNETIC...
236
236
Jun 1, 2011
06/11
by
Eckert; Korbache
texts
eye 236
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comment 0
A calulation of the flow in turbine blading is reported that includes the calculation of effect of centrifugal force. Frictional losses on the stator blades and rotor blades are allowed.
Topics: HALL THRUSTERS, PROPULSION SYSTEM CONFIGURATIONS, ELECTRIC FIELD STRENGTH, GEOSYNCHRONOUS ORBITS,...
R&D Report 1976-33 : UHF field strength measurement of the ATS-6 satellite J. Middleton Space technology can now provide a geosynchronous satellite capable of radiating over 100 kW EIRP within the UHF band. Therefore the question of interference to existing or planned television services sharing this band merits investigation whenever the opportunity arises. The report describes a series of measurements undertaken to establish whether the ATS-6 UHF aerial used for transmitting an...
Topics: bbc, strength, mhz, field, signal, receiver, aerial, satellite, broadcasting, measurement, field...
278
278
Jun 21, 2010
06/10
by
Kurzin, V. B
texts
eye 278
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comment 0
Natural oscillations of gas flow about lattice of plates
Topics: CLOUD PHYSICS, ELECTRIC POTENTIAL, FLIGHT SAFETY, LIGHTNING, ROCKET FLIGHT, ELECTRIC DISCHARGES,...
R&D Report 1963-21 : Service area of the Manningtree television transmitter. J.A. Butt, J.C. Westhorp This report presents the results of a field strength survey of the television transmitters at Manningtree. The service provided is very severely restricted by the high level of interference caused by United Kingdom co-channel stations and the Belgian television station located at Liege. Nevertheless, the principal towns in the service area are provided with a good service for a high...
Topics: manningtree, transmitter, strength, field, receiving, liege, aerial, interference, field strength,...
R&D Report 1963-34 : Service areas of the Redruth television and VHF sound transmitters. R.C. Vercoe, J.H. Causebrook, J.A. Carter The results of field strength surveys of the television and v.h.f. sound transmission are given in this report.
Topics: redruth, transmitters, television, sound, aerial, exceeded, field, strength, field strength, tiers,...
R&D Report 1961-14 : A Re-survey of the service area of the Wrotham VHF sound transmitters. F.P. Raine This report gives the results of a more detailed field strength survey of Wrotham v.h.f. sound transmitters than that undertaken when the original survey was made.
Topics: strength, wrotham, field, contours, map, radiated, exceeded, transmitters, field strength, sound,...
R&D Report 1955-06 : The service area of the temporary television transmitter at Redmoss, Aberdeen. L.F. Tagholm, G.I. Ross, R.S.A. Sandell This report shows that the temporary transmitter at Radmoss, near Aberdeen, provides the city of Aberdeen with a reasonable television service using an effective radiated power of 3 watts. It is shown that the service will, in general, be similar to that expected from the final transmitter at Meldrum.
Topics: transmitter, aberdeen, temporary, redmoss, strength, vision, field, watts, field strength,...
337
337
Sep 20, 2010
09/10
by
NON
texts
eye 337
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comment 0
A device for controlling pressure loading of a member caused by a fluid moving past the member or the member moving through a fluid is presented. The device consists of a porous skin mounted over the solid surface of the member and separated from the solid surface by a plenum. Fluid from an area exerting high pressure on the member may enter the plenum through the porous surface and exit into an area exerting a lower pressure on the member, thus, controlling pressure loading of the member. A...
Topics: ELECTRODYNAMICS, ELECTRONS, FIELD STRENGTH, RESEARCH FACILITIES, ELECTROMAGNETIC FIELDS,...
R&D Report 1963-51 : The Service area of the Meldrum VHF sound transmitters. C.P.Bell The results of a field strength survey of the Meldrum v.h.f. sound transmitters are given in this report.
Topics: meldrum, transmitters, strength, field, stated, portgordon, locations, sound, field strength,...
R&D Report 1959-07 : The service area of the Pontop Pike V,H,F, transmitters. T. Leyland, F.P. Raine, I. Rhodes This report gives the results of a field strength survey of the Pontop Pike v.h.f. transmitters. The service this station provides conforms well with that predicted.
Topics: pontop, pike, field, strength, interference, served, exceeded, transmitters, field strength, area,...
193
193
May 6, 2010
05/10
by
Brock, E. G.; Kiang, Y. C.; Stephany, J. F.; Unterleitner, F. C
texts
eye 193
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Absolute value of optical gain in ruby lasers as function of inhomogeneous magnetic field intensity
Topics: ATOMS, FIELD STRENGTH, LASER OUTPUTS, LIGHT MODULATION, MAGNETIC FLUX, NONUNIFORM MAGNETIC FIELDS,...
This report shows, in detail, how the geomagnetic field interacts with the particle flux of the radiation belts to create a hazard to spacecraft and humans in near-Earth orbit. It illustrates the geometry of the geomagnetic field lines, especially around the area where the field strength is anomalously low in the South Atlantic Ocean. It discusses how the field will probably change in the future and the consequences that may have on hazards in near space.
Topics: NASA Technical Reports Server (NTRS), GEOMAGNETISM, FIELD STRENGTH, FLUX (RATE), RADIATION BELTS,...
257
257
Jun 12, 2011
06/11
by
Spinetti, C.; Carrere, V.; Buongiorno, M. F.; Pieri, D
texts
eye 257
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Absorbing the electromagnetic radiation in several regions of the solar spectrum, CO2 plays an important role in the Earth radiation budget since it produces the greenhouse effect. Many natural processes in the Earth s system add and remove carbon dioxide. Overall, measurements of atmospheric carbon dioxide at different sites around the world show an increased carbon dioxide concentration in the atmosphere. At Mauna Loa Observatory (Hawaii) the measured carbon dioxide increased from 315 to 365...
Topics: GRAVITATIONAL FIELDS, SOLAR SYSTEM, RELATIVISTIC EFFECTS, LASER INTERFEROMETRY, ASTROMETRY,...
R&D Report 1962-46 : The Service area of the Les Platons VHF sound transmitters (1962). M.J. Buckley, J.H. Stewart This report gives the results of a field strength survey of the v.h.f. sound transmissions radiated from Les Platons in Jersey and Guernsey. Most of Jersey gets a satisfactory service, but about one fifth of the island of Guernsey is not served. An Engineering Information Department (E.I.D.) survey showed that the v.h.f. service in Sark from Les Platons is satisfactory but...
Topics: les, platons, strength, transmitters, ville, aerial, guernsey, field, les platons, receiving, field...
R&D Report 1957-04 : The service area of the Pontop Pike television transmitter. D.W. Taplin, D.F. Cooney, I. Rhodes A field strength survey of the Pontop Pike television transmission has been carried out. The service provided conforms well with that expected from site test measurements. The heavily populated industrial areas of Tyneside area well served. The Tees-side area is provided with a fair service.
Topics: pontop, pike, transmitter, transmission, strength, contours, field, median, pontop pike, populated,...
R&D Report 1961-18 : Service areas in Caithness of the Thrumster and Orkney television and VHF sound transmitters. M.J. Buckley The service areas in Caithness of the Thrumster and Orkney television and v.h.f. sound transmitters conform well with those predicted from site test measurements. A very large proportion of the population of the country gets very good service- few are beyond the range of one of the stations.
Topics: orkney, thrumster, transmitters, caithness, aerial, tiers, sound, television, orkney television,...
206
206
May 30, 2011
05/11
by
Paik, Sun M.; Yoo, Sung M.; Namkung, Min; Wincheski, Russell A
texts
eye 206
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We have studied thermal expansion of the surface layers of the hexagonally reconstructed Au (001) surface using a classical Molecular Dynamics (MD) simulation technique with an Embedded Atomic Method (EAM) type many-body potential. We find that the top-most hexagonal layer contracts as temperature increases, whereas the second layer expands or contracts depending on the system size. The magnitude of expansion coefficient of the top layer is much larger than that of the other layers. The...
Topics: PLASMA HEATING, FIELD STRENGTH, LIGHT MODULATION, SEMICONDUCTOR LASERS, HOLES (ELECTRON...
699
699
Sep 20, 2010
09/10
by
Larkin, Michael J.; Schweiger, Paul S
texts
eye 699
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comment 0
A flow-through inlet test program was conducted to evaluate inlet test methods and determine the impact of the fan on inlet separation when operating at large angles of attack. A total of 16 model configurations of approximately 1/6 scale were tested. A comparison of these flow-through results with powered data indicates the presence of the fan increased separation operation 3 degrees to 4 degrees over the flow through inlet. Rods and screens located at the fan face station, that redistribute...
Topics: ELASTIC SCATTERING, FIELD STRENGTH, NUCLEONS, POMERONS, ELECTROMAGNETIC FIELDS, ELECTROMAGNETIC...
