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Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Ambient habitat noise and vibration at the Georgia Aquarium  

E-Print Network [OSTI]

Ambient habitat noise and vibration at the Georgia Aquarium P. M. Scheifele Department significant levels of background noise due to pumps and motors. This noise, together with pool architecture to quantify the ambient noise levels in the water from machine vibration and from in-air performance speaker

Johnson, Michael T.

2

ambient ocean noise: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of anisotropy in oceanic ambient noise fields and its relevance to Acoustic Daylight imaging CiteSeer Summary: Acoustic Daylight is a new technique for creating pictorial...

3

On the reliability of attenuation measurements from ambient noise crosscorrelations  

E-Print Network [OSTI]

an earthquake in Nevada and a mining blast in Wyoming. We demonstrate that com- mon ambient noise data is needed to understand the effect of uneven noise source dis- tribution prior to estimation of local

Johnson, Cari

4

E-Print Network 3.0 - ambient noise Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Products Collection: Environmental Sciences and Ecology 2 Is ambient noise tomography across ocean basins possible? Fan-Chi Lin,1 Summary: Is ambient noise tomography...

5

Brady 1D seismic velocity model ambient noise prelim  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Preliminary 1D seismic velocity model derived from ambient noise correlation. 28 Green's functions filtered between 4-10 Hz for Vp, Vs, and Qs were calculated. 1D model estimated for each path. The final model is a median of the individual models. Resolution is best for the top 1 km. Poorly constrained with increasing depth.

Mellors, Robert J.

6

Brady 1D seismic velocity model ambient noise prelim  

SciTech Connect (OSTI)

Preliminary 1D seismic velocity model derived from ambient noise correlation. 28 Green's functions filtered between 4-10 Hz for Vp, Vs, and Qs were calculated. 1D model estimated for each path. The final model is a median of the individual models. Resolution is best for the top 1 km. Poorly constrained with increasing depth.

Mellors, Robert J.

2013-10-25T23:59:59.000Z

7

E-Print Network 3.0 - ambient community noise Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

noise moves beyond some... and uppermost mantle. This method is called Ambient Noise Tomography (ANT) and ... Source: Ritzwolle, Mike - Cooperative Institute for Research in...

8

E-Print Network 3.0 - ambient noise correlation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

results for: ambient noise correlation Page: << < 1 2 3 4 5 > >> 1 Is ambient noise tomography across ocean basins possible? Fan-Chi Lin,1 Summary: from correlations of the...

9

E-Print Network 3.0 - ambient seismic noise Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

.M. Shapiro, and Y. Yang, Processing seismic ambient noise data to obtain reliable broad-band surface wave... wave tomography of the ... Source: Ritzwolle, Mike -...

10

Ambient noise seismic imaging Journal: McGraw Hill 2008 Yearbook of Science & Technology  

E-Print Network [OSTI]

ForReview Ambient noise seismic imaging Journal: McGraw Hill 2008 Yearbook of Science & Technology List of Authors: Ritzwoller, Michael Keywords: ambient noise, seismology, seismic tomography, Rayleigh wave, Love wave, surface wave Abstract: A recent innovation in seismic imaging based on using long time

Ritzwolle, Mike

11

Joint inversion of receiver function and ambient noise based on Bayesian theory  

E-Print Network [OSTI]

In this study, we present a method for the joint inversion of receiver function and ambient noise based on Bayesian inverse theory (Tarantola, 1987, 2005). The nonlinear inversion method of the complex spectrum ratio of ...

van der Hilst, Robert D.

12

Review paper Seismic interferometry and ambient noise tomography in the British Isles  

E-Print Network [OSTI]

Review paper Seismic interferometry and ambient noise tomography in the British Isles Heather. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 2. Theory and method of seismic interferometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 4.2. Seismic interferometry across the Scottish Highlands

13

Depth profiling ambient noise in the deep ocean  

E-Print Network [OSTI]

al. , 2005). The vertical profile of wind speed over the seavertical directionality…………… Depth-dependence of wind speedVertical noise directional density function versus depth. 93 Measured and acoustically estimated wind speeds.

Barclay, David Readshaw

2011-01-01T23:59:59.000Z

14

Water Use Efficiency in Plant Growth and Ambient Carbon Dioxide Level  

E-Print Network [OSTI]

TR-42 1972 Water Use Efficiency in Plant Growth and Ambient Carbon Dioxide Level C.H. M. van Bavel Texas Water Resources Institute Texas A&M University ...

van Bavel, C. H. M.

15

E-Print Network 3.0 - ambient urban levels Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: that seven major sources of ambient PM10 were urban fugitive dust, crustal soil, coal combustion, secondary... diameter of 10 m or less) exceeded the level II of...

16

High levels of environmental noise erode pair preferences in zebra finches: implications for noise pollution  

E-Print Network [OSTI]

for noise pollution JOHN P. SWADDLE & LAURA C. PAGE Institute for Integrative Bird Behavior Studies, Biology: acoustic; cognition; courtship; environmental noise; extrapair copulation; mate choice; perception

Swaddle, John

17

Defeating ambient noise: practical approaches May 14th ICASSP 2006, Toulouse, France 1  

E-Print Network [OSTI]

, Cambridge, MA, 1949. [5] R. J. McAulay and M. L. Malpass, "Speech enhancement using a soft-decision noise. 137­145, Apr. 1980. [6] D. L. Wang and J. S. Lim, "The unimportance of phase in speech enhancement. 1982. [7] Y. Ephraim, D. Malah, "Speech enhancement using a minimum mean-square erro short

Narasayya, Vivek

18

E-Print Network 3.0 - ambient air character Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Utilization 99 VII THINKING OF SOLUTIONS: measures to mitigate night time wind turbine noise Summary: on the wind velocity related background ambient sound level (L95 or...

19

Biomass, Flavonol Levels and Sensory Characteristics of Allium cultivars Grown Hydroponically at Ambient and  

E-Print Network [OSTI]

04ICES-136 Biomass, Flavonol Levels and Sensory Characteristics of Allium cultivars Grown growth chambers to evaluate the effect of elevated CO2 (1200 ppm) versus ambient CO2 (400 ppm) on biomass planting (dap). Regardless of cultivar or dap, plants grown at elevated CO2 had greater biomass

Paré, Paul W.

20

A proposed system to automatically control audio sound-to-noise levels  

E-Print Network [OSTI]

the human ear is stimulated by vibrating particles of a1r, sound is sensed. If this sound is undesired, it isp by definition, noise. Any sound that is irx'egular, impulsive, non-repetitive, or simply irri, tating to the listenez' may be classified..., applause, or laughter in theaters; motor or wind noise in moving vehicles] or the noise of people dancing. The level or the souroe ef noise was unimportant sinoe the oontrol system would hold the sound-to-noise level approximately constant. Fox' design...

Neinast, Gary Strickland

1957-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

E-Print Network 3.0 - ambient noise levels Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Calculus over an ARC Framework ... Source: Joshi, Rushikesh K. - Department of Computer Science and Engineering, Indian Institute of Technology Bombay Collection: Computer...

22

Arctic ocean long-term acoustic monitoring : ambient noise, environmental correlates, and transients north of Barrow, Alaska  

E-Print Network [OSTI]

ice floes. Figure 4.6 – Thermal fracturing due to atmospheric coolingsea ice prior to the onset of heat loss and rapid cooling (atmospheric cooling. Wind-Driven Noise During fall, the ice

Roth, Ethan H.

2008-01-01T23:59:59.000Z

23

E-Print Network 3.0 - ambient radioactivity levels Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: of repositories for high-level radioactive waste and spent nuclear fuel. Low Level Radioactive Waste Policy Act... adequate disposal capacity for low-level...

24

Assessing underwater noise levels during pile-driving at an offshore windfarm and its potential effects on marine mammals  

E-Print Network [OSTI]

of underwater noise on marine spe- cies, particularly from pile-driving for wind turbines. Environmental. In 2006, two 5 MW wind tur- bines were installed off NE Scotland. The turbines were in deep (>40 m) waterAssessing underwater noise levels during pile-driving at an offshore windfarm and its potential

Aberdeen, University of

25

E-Print Network 3.0 - ambient laboratory conditions Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Information Sciences 8 Ambient Noise Tomography in the Western US using Data from the EarthScopeUSArray Transportable Array Summary: 1 Ambient Noise Tomography in...

26

E-Print Network 3.0 - ambient temperature comportement Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ambient (Outdoor) Air, Indoor Disasters Lead... (Pb) Noise Pesticides Sentinel Events Sun and Ultraviolet Light Toxics and Waste Water, Ambient Water... pollutants in ambient...

27

E-Print Network 3.0 - ambient ozone levels Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

level ozone. Lesson 2: Ozone Formation... , power plants and industry all emit air pollution that forms ... Source: Royer, Dana - Department of Earth and Environmental Sciences,...

28

Numerical study of the effect of normalised window size, sampling frequency, and noise level on short time Fourier transform analysis  

SciTech Connect (OSTI)

Photonic Doppler velocimetry, also known as heterodyne velocimetry, is a widely used optical technique that requires the analysis of frequency modulated signals. This paper describes an investigation into the errors of short time Fourier transform analysis. The number of variables requiring investigation was reduced by means of an equivalence principle. Error predictions, as the number of cycles, samples per cycle, noise level, and window type were varied, are presented. The results were found to be in good agreement with analytical models.

Ota, T. A. [AWE, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom)] [AWE, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom)

2013-10-15T23:59:59.000Z

29

Integration of Noise and Coda Correlation Data into Kinematic...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

noise correlation Green's functions (NCF) obtained from MEQs and ambient noise and coda-wave interferometry to image the physical properties of geothermal reservoirs and detect and...

30

Estimation of a Noise Level Using Coarse-Grained Entropy of Experimental Time Series of Internal Pressure in a Combustion Engine  

E-Print Network [OSTI]

We report our results on non-periodic experimental time series of pressure in a single cylinder spark ignition engine. The experiments were performed for different levels of loading. We estimate the noise level in internal pressure calculating the coarse-grained entropy from variations of maximal pressures in successive cycles. The results show that the dynamics of the combustion is a nonlinear multidimensional process mediated by noise. Our results show that so defined level of noise in internal pressure is not monotonous function of loading.

Grzegorz Litak; Rodolfo Taccani; Krzysztof Urbanowicz; Janusz A. Holyst; Miroslaw Wendeker; Alessandro Giadrossi

2004-05-22T23:59:59.000Z

31

Please cite this article in press as: Yao, H., et al., Estimation of surface wave Green's functions from correlation of direct waves, coda waves, and ambient noise in SE Tibet. Phys. Earth Planet. In. (2009), doi:10.1016/j.pepi.2009.07.002  

E-Print Network [OSTI]

from correlation of direct waves, coda waves, and ambient noise in SE Tibet. Phys. Earth Planet. In. (2009), doi:10.1016/j.pepi.2009.07.002 ARTICLE IN PRESSG Model PEPI-5177; No.of Pages11 Physics with (plane wave) beamforming of the energy contributing to EGF construction. Beamforming also demonstrates

van der Hilst, Robert Dirk

32

Blue whale response to underwater noise from commercial ships  

E-Print Network [OSTI]

Accessing Noise Impact Acoustic pollution from ship noise isConcerns regarding acoustic noise pollution from ships ariseNoise pollution level metric for acoustic data collected at

McKenna, Megan Frances

2011-01-01T23:59:59.000Z

33

Saturation of two-level systems and charge noise in Josephson junction qubits Magdalena Constantin,1,* Clare C. Yu,1 and John M. Martinis2  

E-Print Network [OSTI]

Saturation of two-level systems and charge noise in Josephson junction qubits Magdalena Constantin to using superconducting Josephson junction qubits to construct quantum computers. Recent experiments7.094520 PACS number s : 74.40. k, 03.67.Pp, 77.22.Gm, 85.25.Cp I. INTRODUCTION The superconducting Josephson

Martinis, John M.

34

Ambient Air Quality Criteria (Manitoba, Canada)  

Broader source: Energy.gov [DOE]

The Manitoba Ambient Air Quality Criteria schedule lists maximum time-based pollutant concentration levels for the protection and preservation of ambient air quality within the Province of Manitoba...

35

Single-photoelectron noise reduction in scintillation detectors  

SciTech Connect (OSTI)

The 1994--95 search at SLAC for mulicharged particles used four 21 {times} 21 {times} 130-cm{sup 3} Bicron 408 scintillation counters to detect a signal at the single-photoelectron level. The competing noise requiring minimization was due to a combination of PM tube (8-inch Thorne EMI 9353KA) afterpulsing and ambient radiation-induced scintillator luminescence. A very slow decay (> 30 {mu}s) component was observed and received particular attention. Efforts to reduce the SPE noise included photomultiplier tube base modifications, detector shielding and cooling, signal amplification, and veto procedures.

Marvin, T.P. [Southern Oregon State College, Ashland, OR (United States); The SLAC mQ Collaboration

1995-10-01T23:59:59.000Z

36

acoustic noise: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of anisotropy in oceanic ambient noise fields and its relevance to Acoustic Daylight imaging CiteSeer Summary: Acoustic Daylight is a new technique for creating pictorial...

37

airborne acoustical noise: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of anisotropy in oceanic ambient noise fields and its relevance to Acoustic Daylight imaging CiteSeer Summary: Acoustic Daylight is a new technique for creating pictorial...

38

E-Print Network 3.0 - ambient transverse velocity Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the Radially Anisotropic Crustal Velocity Structure of NW Canada with Ambient-Noise Tomography M. E. Daigle1; C... -component records and Love waves on the transverse components....

39

Lead reduction in ambient air  

SciTech Connect (OSTI)

The Bureau of Mines evaluated the emission control methods, including the capital investments and operating cost, necessary for further reducing lead levels in ambient air at the Glover, Herculaneum, and Buick smelter-refineries in Missouri and the East Helena, MT, smelter. This report presents theoretically achievable lead emission reductions and estimated capital and operating costs.

Smith, R.D.; Kiehn, O.A.; Wilburn, D.R.; Bowyer, R.C.

1987-01-01T23:59:59.000Z

40

EVALUACIN DEL IMPACTO AMBIENTAL  

E-Print Network [OSTI]

EVALUACI�N DEL IMPACTO AMBIENTAL Grado en Ciencias Ambientales Universidad de Alcalá Curso DEL IMPACTO AMBIENTAL Código: 670020 Titulación en la que se imparte: Grado en Ciencias Ambientales que se imparte: Español 1. PRESENTACI�N La evaluación de impacto ambiental de proyectos es un

Espigares, Tíscar

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Seismic gravity-gradient noise in interferometric gravitational-wave detectors  

E-Print Network [OSTI]

When ambient seismic waves pass near an interferometric gravitational-wave detector, they induce density perturbations in the earth which produce fluctuating gravitational forces on the interferometer's test masses. These forces mimic a stochastic background of gravitational waves and thus constitute noise. We compute this noise using the theory of multimode Rayleigh and Love waves propagating in a layered medium that approximates the geological strata at the LIGO sites. We characterize the noise by a transfer function $T(f) \\equiv \\tilde x(f)/\\tilde W(f)$ from the spectrum of direction averaged ground motion $\\tilde W(f)$ to the spectrum of test mass motion $\\tilde x(f) = L\\tilde h(f)$ (where $L$ is the length of the interferometer's arms, and $\\tilde h(f)$ is the spectrum of gravitational-wave noise). This paper's primary foci are (i) a study of how $T(f)$ depends on the various seismic modes; (ii) an attempt to estimate which modes are excited at the LIGO sites at quiet and noisy times; and (iii) a corresponding estimate of the seismic gravity-gradient noise level. At quiet times the noise is below the benchmark noise level of ``advanced LIGO interferometers'' (although not by much near 10 Hz); it may significantly exceed this level at noisy times. The lower edge of our quiet-time noise is a limit beyond which there is little gain from further improvements in vibration isolation and thermal noise, unless one also reduces seismic gravity-gradient noise. Two methods of reduction are discussed: monitoring the earth's density perturbations, computing their gravitational forces, and correcting the data for those forces; and constructing narrow moats around the interferometers' test masses to shield out the fundamental-mode Rayleigh waves, which we suspect dominate at quiet times.

Scott A. Hughes; Kip S. Thorne

1998-06-03T23:59:59.000Z

42

ORIGINAL ARTICLE Ambient Air Pollution  

E-Print Network [OSTI]

ORIGINAL ARTICLE Ambient Air Pollution and Cardiovascular Emergency Department Visits Kristi Busico ambient air pollutants and cardiovascular disease (CVD), the roles of the physicochemical components the relation between ambient air pollution and cardiovascular conditions using ambient air quality data

Mulholland, James A.

43

Low-noise SQUID  

DOE Patents [OSTI]

The present invention comprises a high-transition-temperature superconducting device having low-magnitude low-frequency noise-characteristics in magnetic fields comprising superconducting films wherein the films have a width that is less than or equal to a critical width, w.sub.C, which depends on an ambient magnetic field. For operation in the Earth's magnetic field, the critical width is about 6 micrometers (.mu.m). When made with film widths of about 4 .mu.m an inventive high transition-temperature, superconducting quantum interference device (SQUID) excluded magnetic flux vortices up to a threshold ambient magnetic field of about 100 microTesla (.mu.T). SQUIDs were fabricated having several different film strip patterns. When the film strip width was kept at about 4 .mu.m, the SQUIDs exhibited essentially no increase in low-frequency noise, even when cooled in static magnetic fields of magnitude up to 100 .mu.T. Furthermore, the mutual inductance between the inventive devices and a seven-turn spiral coil was at least 85% of that for inductive coupling to a conventional SQUID.

Dantsker, Eugene (Torrance, CA); Clarke, John (Berkeley, CA)

2000-01-01T23:59:59.000Z

44

Ambient Air Quality Standards (Iowa)  

Broader source: Energy.gov [DOE]

These regulations set statewide ambient air quality standards for various contaminants. The state code follows the regulations set forth in the National Primary and Secondary Ambient Air Quality...

45

Ambient fluid motions influence swimming and feeding by the ctenophore  

E-Print Network [OSTI]

current erosion and fluid mechanical signal noise within turbulent flows affect the mechanics of predatorAmbient fluid motions influence swimming and feeding by the ctenophore Mnemiopsis leidyi KELLY R) fluid interactions during feeding by the lobate ctenophore, Mnemiopsis leidyi, a highly successful

Dabiri, John O.

46

Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit  

DOE Patents [OSTI]

A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radio nuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components.

McQuaid, James H. (Livermore, CA); Lavietes, Anthony D. (Hayward, CA)

1998-05-29T23:59:59.000Z

47

Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit  

DOE Patents [OSTI]

A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector is disclosed. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radionuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components. 9 figs.

McQuaid, J.H.; Lavietes, A.D.

1998-05-26T23:59:59.000Z

48

Depth profiling ambient noise in the deep ocean  

E-Print Network [OSTI]

yaw of the platform itself. All the data recorded by the systemyaw of the platform. These data are useful in the diagnosis and correction of undesirable system

Barclay, David Readshaw

2011-01-01T23:59:59.000Z

49

Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise  

DOE Patents [OSTI]

An asymmetric planar gradiometer for use in making biomagnetic measurements. The gradiometer is formed from a magnetometer which is inductively-coupled to the smaller of two connected loops patterned in a superconducting film which form a flux transformer. The magnetometer is based on a SQUID formed from a high T.sub.c superconducting material. The flux transformer and magnetometer may be formed on separate substrates, allowing the baseline to be increased relative to presently available devices.

Dantsker, Eugene (Torrance, CA); Clarke, John (Berkeley, CA)

2000-01-01T23:59:59.000Z

50

RESEARCH ARTICLE Shallow seismicity, triggered seismicity, and ambient noise  

E-Print Network [OSTI]

-dormant Uturuncu Volcano, Bolivia Jennifer A. Jay & Matthew E. Pritchard & Michael E. West & Douglas Christensen (APVC) of the central Andes in SW Bolivia (22°16S, 67°11W), southeast of the town of Quetena Chico. 39 Calixto, La Paz, Bolivia M. Sunagua SERGEOTECMIN, La Paz, Bolivia Bull Volcanol (2012) 74:817­837 DOI 10

West, Michael

51

Noise Pollution Control (Minnesota)  

Broader source: Energy.gov [DOE]

These regulations set noise standards and direct municipalities to take reasonable measures to prevent the establishment of land use activities with a high noise pollution potential.

52

Development of computer program ENAUDIBL for computation of the sensation levels of multiple, complex, intrusive sounds in the presence of residual environmental masking noise  

SciTech Connect (OSTI)

The relative audibility of multiple sounds occurs in separate, independent channels (frequency bands) termed critical bands or equivalent rectangular (filter-response) bandwidths (ERBs) of frequency. The true nature of human hearing is a function of a complex combination of subjective factors, both auditory and nonauditory. Assessment of the probability of individual annoyance, community-complaint reaction levels, speech intelligibility, and the most cost-effective mitigation actions requires sensation-level data; these data are one of the most important auditory factors. However, sensation levels cannot be calculated by using single-number, A-weighted sound level values. This paper describes specific steps to compute sensation levels. A unique, newly developed procedure is used, which simplifies and improves the accuracy of such computations by the use of maximum sensation levels that occur, for each intrusive-sound spectrum, within each ERB. The newly developed program ENAUDIBL makes use of ERB sensation-level values generated with some computational subroutines developed for the formerly documented program SPECTRAN.

Liebich, R. E.; Chang, Y.-S.; Chun, K. C.

2000-03-31T23:59:59.000Z

53

E-Print Network 3.0 - acoustic background noise Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NOISE LEVELS IN STUDIOS AND AUDITORIA A. JAMES Sound Research Laboratories, Saxon House... complex computer and scale modelling. The specification of a background noise...

54

National Ambient Radiation Database  

SciTech Connect (OSTI)

The U.S. Environmental Protection Agency (EPA) recently developed a searchable database and website for the Environmental Radiation Ambient Monitoring System (ERAMS) data. This site contains nationwide radiation monitoring data for air particulates, precipitation, drinking water, surface water and pasteurized milk. This site provides location-specific as well as national information on environmental radioactivity across several media. It provides high quality data for assessing public exposure and environmental impacts resulting from nuclear emergencies and provides baseline data during routine conditions. The database and website are accessible at www.epa.gov/enviro/. This site contains (1) a query for the general public which is easy to use--limits the amount of information provided, but includes the ability to graph the data with risk benchmarks and (2) a query for a more technical user which allows access to all of the data in the database, (3) background information on ER AMS.

Dziuban, J.; Sears, R.

2003-02-25T23:59:59.000Z

55

E-Print Network 3.0 - adaptive noise reduction Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a noise... a spatial noise filter that meets these requirements. A number of spatial adaptive filters have been pro... to the input noise level, the RSF use the ... Source:...

56

Highway noise reduction by barrier walls  

E-Print Network [OSTI]

's Variables 3. Noise Reduction and Noise Reduction Factor 4. Relationship Between Noise Attenuation and d 5. Rettinger's Variables 6. Relationship of Sound-Level Reduction and v 7. Basic Principles in Sound-Transmission Loss 8. The Mass Law Relationship... that the barrier wall is acoustically opaque (i. e. , impermeable to sound waves). Purcell (8) found that the noise transmission loss of a wall was a measure of the ratio of the acoustical energy transmitted through the wall to the acoustical energy incident...

Young, Murray F

1971-01-01T23:59:59.000Z

57

Seguimientoyvigilanciaambiental 9 Seguimiento y vigilancia ambiental  

E-Print Network [OSTI]

escenario definido por la evaluación de impacto ambiental (EIA) de los mismos. Salvo en aquellos casos en impacto ambiental (EsIA), tanto en lo referente a su ejecución como a su eficacia. El órgano ambiental impacto ambiental (DIA). En caso de que la DIA sea positiva, fija las condiciones de carácter ambiental

Espigares, Tíscar

58

ESPECIALIZACIN EN GESTIN AMBIENTAL Objetivo del programa  

E-Print Network [OSTI]

impacto ambiental del desarrollo 3 Política y legislación ambiental 3 Planificación y gestión ambientalESPECIALIZACI�N EN GESTI�N AMBIENTAL Objetivo del programa La Especialización en Gestión Ambiental identificar, en un mundo cambiante, en lo social, en lo económico y en lo ambiental, las medidas de prevención

Vásquez, Carlos

59

ORIGINAL ARTICLE Ambient Air Pollution  

E-Print Network [OSTI]

ORIGINAL ARTICLE Ambient Air Pollution and Respiratory Emergency Department Visits Jennifer L. Peel pollution and respiratory outcomes. More refined assessment has been limited by study size and available air quality data. Methods: Measurements of 5 pollutants (particulate matter PM10 , ozone, nitrogen dioxide NO2

Mulholland, James A.

60

Ambient pressure fuel cell system  

DOE Patents [OSTI]

An ambient pressure fuel cell system is provided with a fuel cell stack formed from a plurality of fuel cells having membrane/electrode assemblies (MEAs) that are hydrated with liquid water and bipolar plates with anode and cathode sides for distributing hydrogen fuel gas and water to a first side of each one of the MEAs and air with reactant oxygen gas to a second side of each one of the MEAs. A pump supplies liquid water to the fuel cells. A recirculating system may be used to return unused hydrogen fuel gas to the stack. A near-ambient pressure blower blows air through the fuel cell stack in excess of reaction stoichiometric amounts to react with the hydrogen fuel gas.

Wilson, Mahlon S. (Los Alamos, NM)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

E-Print Network 3.0 - ambiental instrumento interdisciplinar...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: los sistemas de certificacin ambiental como instrumentos para reducir el impacto ambiental de las... EMPRESA Y SOCIEDAD (MEDIO AMBIENTE) TERCER TRIMESTRE. CURSO...

62

Amplitude modulation of wind turbine noise  

E-Print Network [OSTI]

Due to swish and thump amplitude modulation, the noise of wind turbines cause more annoyance than other environmental noise of the same average level. The wind shear accounts for the thump modulation (van den Berg effect). Making use of the wind speed measurements at the hub height, as well as at the top and the bottom of the rotor disc (Fig.1), the non-standard wind profile is applied. It causes variations in the A-weighted sound pressure level, LpA. The difference between the maximum and minimum of LpA characterizes thump modulation (Fig.2).

Makarewicz, Rufin

2013-01-01T23:59:59.000Z

63

OFICINA DE MEDIO AMBIENTE (OMA-UDC) VICERREITORA DE INFRAESTRUTURAS E XESTIN AMBIENTAL  

E-Print Network [OSTI]

Análise do impacto ambiental na UDC: Parte II. Enquisa curso 200809 #12;Análise do impacto ambiental na UDC (Parte II, 200809) Análise do impacto ambiental na UDC: Parte II. Enquisa curso 200809 O presente informe realizouse a partir dos datos da enquisa de ANÁLISE DO IMPACTO AMBIENTAL NA UDC (PARTE II

Fraguela, Basilio B.

64

Characterizing the noise produced by hard disk drives  

E-Print Network [OSTI]

Detection of noise emanating from machinery is not a novel concept. Various methods of acoustic and vibration measurement have been applied to systems ranging from small fan motors to the environmental effects of traffic noise, table l. Among the more... Indexed Noise Levels Small Fan Motors Acoustic and Vibration S ctral Anal sis Automated Inspection S stem While the goal of such research has not been to find annoying or even noisy components, automated vibration signature analysis is a useful tool...

Cherniak, Bruce Marshall

1991-01-01T23:59:59.000Z

65

Improvement of signal-to-noise ratio in uterine EMG recordings.  

E-Print Network [OSTI]

The objective of this study is to remove or, at least, reduce the noise in uterine EMG recordings, which at their present noise level render the data unusable. Predicting when true labor will start and recognizing when labor actually starts...

Cheng, Lui

2005-02-17T23:59:59.000Z

66

Noise and Bandwidth Performance of Single-Molecule Biosensors  

E-Print Network [OSTI]

Noise and Bandwidth Performance of Single-Molecule Biosensors J. Rosenstein, S. Sorgenfrei, K. L and nanotube field-effect transistors offer different tradeoffs between bandwidth and noise levels. Here, we on force spectroscopy, such as optical tweezers [4] and atomic force microscopy [5]. New electrochemical

Shepard, Kenneth

67

Ambient Air Quality Standards (New Jersey)  

Broader source: Energy.gov [DOE]

This article lists specific standards for ambient air quality standards for particulate matter, sulfur dioxide, carbon monoxide, ozone, lead and nitrogen dioxide.

68

Ambient Air Quality Standards (New Mexico)  

Broader source: Energy.gov [DOE]

This regulation establishes ambient air quality standards for the areas of New Mexico under the jurisdiction of the Environmental Improvement Board. The maximum allowable concentrations of total...

69

Prcticas de Evaluacin del Impacto Ambiental Revisin de Estudios de Impacto Ambiental  

E-Print Network [OSTI]

Prácticas de Evaluación del Impacto Ambiental Revisión de Estudios de Impacto Ambiental Nombre y? #12;Prácticas de Evaluación del Impacto Ambiental D.- La identificación de impactos: - ¿Qué método objetivo? - ¿Valoran la ganancia de Calidad Ambiental que producen? #12;Prácticas de Evaluación del Impacto

Espigares, Tíscar

70

An experimental study of low-frequency amplitude noise in a fibre Bragg grating laser diode  

SciTech Connect (OSTI)

We have studied the amplitude noise in a fibre Bragg grating laser diode. It has been shown that discontinuities in noise characteristics correlate with those in the power – current and spectral characteristics of the laser diode, whereas the noise characteristics of the pump source have no such discontinuities. The highest noise level has been observed at pump currents corresponding to concurrent generation of two longitudinal modes. (lasers)

Zholnerov, V S [Russian Institute of Radionavigation and Time, St.Petersburg (Russian Federation); Ivanov, A V; Kurnosov, V D; Kurnosov, K V; Romantsevich, V I; Chernov, R V [Open Joint-Stock Company M.F. Stel'makh Polyus Research Institute, Moscow (Russian Federation)

2013-09-30T23:59:59.000Z

71

Computational aeroacoustics of near field propfan noise using 3-D Euler analysis  

E-Print Network [OSTI]

contains acoustic power at a specific set of frequencies which are harmonics of the blade passing frequency. Propfans may produce excessive noise Journal model used is AIAA Journal of Aircraft. levels compared to the noise of a conventional propeller... is sometimes referred to as thickness noise since its magnitude is directly related to the thickness of the propeller blade independent of blade loading. Noise which arises from the periodic translational displacement of air due to the resultant aerodynamic...

Forsyth, David William

1987-01-01T23:59:59.000Z

72

1/f noise in semiconductor and metal nanocrystal solids  

SciTech Connect (OSTI)

Electrical 1/f noise is measured in thin films of CdSe, CdSe/CdS, ZnO, HgTe quantum dots and Au nanocrystals. The 1/f noise, normalized per nanoparticle, shows no systematic dependence on the nanoparticle material and the coupling material. However, over 10 orders of magnitude, it correlates well with the nearest neighbor conductance suggesting some universal magnitude of the 1/f noise in these granular conductors. In the hopping regime, the main mechanism of 1/f noise is determined to be mobility fluctuated. In the metallic regime obtained with gold nanoparticle films, the noise drops to a similar level as bulk gold films and with a similar temperature dependence.

Liu, Heng, E-mail: leophy@gmail.com; Lhuillier, Emmanuel, E-mail: emmanuel.lhuillier@espci.fr; Guyot-Sionnest, Philippe [James Franck Institute, The University of Chicago, 929 E 57th Street, Chicago, Illinois 60637 (United States)

2014-04-21T23:59:59.000Z

73

Analysis of Shot Noise Suppression for Electron Beams  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Shot noise can affect the performance of free-electron lasers (FELs) by driving instabilities (e.g., the microbunching instability) or by competing with seeded density modulations. Recent papers have proposed suppressing shot noise to enhance FEL performance. In this paper we use a onedimensional (1D) model to calculate the noise amplification from an energy modulation (e.g., electron interactions from space charge or undulator radiation) followed by a dispersive section. We show that, for a broad class of interactions, selecting the correct dispersive strength suppresses shot noise across a wide range of frequencies. The final noise level depends on the beam’s energy spread and the properties of the interaction potential. We confirm and illustrate our analytical results with 1D simulations.

Ratner, Daniel; Huang, Zhirong; Stupakov, Gennady

2015-02-02T23:59:59.000Z

74

Turbo Receiver Design for Phase Noise Mitigation in OFDM Systems  

E-Print Network [OSTI]

This paper addresses the issue of phase noise in OFDM systems. Phase noise (PHN) is a transceiver impairment resulting from the non-idealities of the local oscillator. We present a case for designing a turbo receiver for systems corrupted by phase noise by taking a closer look at the effects of the common phase error (CPE). Using an approximate probabilistic framework called variational inference (VI), we develop a soft-in soft-out (SISO) algorithm that generates posterior bit-level soft estimates while taking into account the effect of phase noise. The algorithm also provides an estimate of the phase noise sequence. Using this SISO algorithm, a turbo receiver is designed by passing soft information between the SISO detector and an outer forward error correcting (FEC) decoder that uses a soft decoding algorithm. It is shown that the turbo receiver achieves close to optimal performance.

Sridharan, Gokul

2010-01-01T23:59:59.000Z

75

Noise | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's HeatMexico: EnergyMithunCenterInformationNexxus(CTIChateaugayNoblesNoise

76

E-Print Network 3.0 - ambiental del proceso Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EN GESTIN AMBIENTAL Objetivo del programa La Especializacin en Gestin Ambiental... impacto ambiental del desarrollo 3 Poltica y legislacin ambiental 3 Planificacin y...

77

ambiental na implementacao: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 9 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

78

avaliacao ambiental estrategica: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 2 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

79

ambiental aspetti energetici: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 9 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

80

ambiental seguranca qualidade: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 2 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

altas temperaturas ambientes: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

82

ambiente para peso: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

83

ambiental em radioterapia: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

84

ambientes climatizados portaria: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 4 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

85

ambiente em codornas: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 27 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

86

ambiental na bacia: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 16 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

87

avaliacao ambiental para: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 26 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

88

ambiental como tecnica: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions using ambient air quality data Mulholland, James A. 16 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

89

ambient temperature grown: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

90

Chapter 53 Ambient Air Quality (Kentucky)  

Broader source: Energy.gov [DOE]

Kentucky Administrative Regulation Chapter 53, entitled Ambient Air Quality, is promulgated under the authority of the Division of Air Quality within the Energy and Environment Cabinet’s Department...

91

Robust Speech Recognition Under Noisy Ambient  

E-Print Network [OSTI]

.................................................................... 142 6.4.1 Speech Enhancement Techniques .......................................................... 143CHAPTER Robust Speech Recognition Under Noisy Ambient Conditions 6Kuldip K. Paliwal School of Microelectronic Engineering, Griffith University, Brisbane, Australia Kaisheng Yao Speech Component Group

92

MAS.963 Ambient Intelligence, Spring 2004  

E-Print Network [OSTI]

This course focuses on Ambient Intelligence, and how it envisions a world where people are surrounded by intelligent and intuitive interfaces embedded in the everyday objects around them. These interfaces recognize and ...

Maes, Patricia

93

Gua para a Sustentabilidade Ambiental na UDC  

E-Print Network [OSTI]

#12;#12;#12;Guía para a Sustentabilidade Ambiental na UDC #12;Redacción Dolores Árias Vázquez Juan Introdución 23 Indicadores de sustentabilidade 27 O contorno natural e humanizado 35 Caracterización dos Ambientalización curricular 101 Outros servizos da udC relacionados coa sustentabilidade 105 O medio ambiente

Fraguela, Basilio B.

94

Liquid level detector  

DOE Patents [OSTI]

A liquid level detector for low pressure boilers. A boiler tank, from which apor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, Albert P. (Vernon, CT)

1986-01-01T23:59:59.000Z

95

Liquid level detector  

DOE Patents [OSTI]

A liquid level detector for low pressure boilers. A boiler tank, from which vapor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, A.P.

1984-02-21T23:59:59.000Z

96

Nonlinear noise reduction for electrocardiograms  

E-Print Network [OSTI]

Nonlinear noise reduction for electrocardiograms Thomas Schreiber Physics Department, University time series. The underlying physiological process, the electrochemical excitation of cardiac tissue

Kaplan, Daniel T.

97

Quantum noise in optical interferometers  

SciTech Connect (OSTI)

We study the photon counting noise in optical interferometers used for gravitational wave detection. In order to reduce quantum noise, a squeezed vacuum is injected into the usually unused input port. It is investigated under which conditions the gravitational wave signal may be amplified without increasing counting noise concurrently. Such a possibility was suggested as a consequence of the entanglement of the two output ports of a beam splitter. We find that amplification without concurrent increase of noise is not possible for reasonable squeezing parameters. Photon distributions for various beam splitter angles and squeezing parameters are calculated.

Voronov, Volodymyr G.; Weyrauch, Michael [Faculty of Physics, Taras Shevchenko National University of Kyiv, 03022 Kyiv (Ukraine); Physikalisch-Technische Bundesanstalt, D-38116 Braunschweig (Germany)

2010-05-15T23:59:59.000Z

98

Low wave speed zones in the crust beneath SE Tibet revealed by ambient noise  

E-Print Network [OSTI]

, China, 4 State Key Laboratory of Petroleum Resource and Prospecting, and Unconventional Natural Gas's Interior, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui Institute, China University of Petroleum, Beijing, China Abstract We present a refined 3D crustal model

Niu, Fenglin

99

Reducing Uncertainty in Estimates of Environmental Parameters From Ambient Noise Using Statistical Array Processing /  

E-Print Network [OSTI]

random media,” J. Phys. A: Math. ?eor. , vol. 44, p. 065102,random media,” J. Phys. A: Math. ?eor. , vol. 44, p. 065102,media,” J. Phys. A: Math. ?eor. 44, 065102 [24] R. Menon, P.

Menon, Ravishankar

2013-01-01T23:59:59.000Z

100

Reducing Uncertainty in Estimates of Environmental Parameters From Ambient Noise Using Statistical Array Processing /  

E-Print Network [OSTI]

D. in Electrical Engineering (Applied Ocean Sciences), Uni-in Electrical Engineering (Applied Ocean Sciences) byElectrical Engineering (Applied Ocean Sciences) University

Menon, Ravishankar

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

E-Print Network 3.0 - ambient noise measurements Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Vivek - Data Management, Exploration and Mining Group, Microsoft Research Collection: Computer Technologies and Information Sciences 10 A passive fathometer and sub-bottom profiler...

102

Crustal structure of the Transantarctic Mountains near the Ross Sea from ambient seismic noise tomography  

E-Print Network [OSTI]

Antarctica and the Ross Sea region of West Antarctica using Rayleigh wave Green's functions estimated from at periods between 5 and 23 s. The velocity maps are inverted for shear velocities across the region using- tribute to advancing our understanding of glacial movement and how it is influenced by the subglacial

103

Manuel Garca Snchez-Colomer -1 Evaluacin del impacto ambiental  

E-Print Network [OSTI]

Manuel García Sánchez-Colomer - 1 Evaluación del impacto ambiental Temas 12 - 13 Tema 12 impacto ambiental Temas 12 - 13 REAL DECRETO LEGISLATIVO 1/2008 por el que se aprueba el texto refundido de la Ley de Evaluación de Impacto Ambiental de proyectos Artículo 7. Estudio de impacto ambiental

Espigares, Tíscar

104

Influence of refraction on wind turbine noise  

E-Print Network [OSTI]

A semi-empirical method is applied to calculate the time-average sound level of wind turbine noise generation and propagation. Both are affected by wind shear refraction. Under upwind conditions the partially ensonified zone separates the fully ensonified zone (close to the turbine) and the shadow zone (far away from the turbine). Refraction is described in terms of the wind speed linear profile fitted to the power law profile. The rotating blades are treated as a two-dimensional circular source in the vertical plane. Inside the partially ensonified zone the effective A-weighted sound power decreases to zero when the receiver moves from the turbine toward the shadow zone. The presented results would be useful in practical applications to give a quick estimate of the effect of refraction on wind turbine noise.

Makarewicz, Rufin

2013-01-01T23:59:59.000Z

105

Low Frequency Noise in Nano-Devices  

E-Print Network [OSTI]

device quality, reliability and the degradation processes. The generation- recombination noise which. His current research interests include low frequency noise, wide-band-gap semiconductors, UV light

106

RADIONUCLIDE TRANSPORT MODELS UNDER AMBIENT CONDITIONS  

SciTech Connect (OSTI)

The purpose of this model report is to document the unsaturated zone (UZ) radionuclide transport model, which evaluates, by means of three-dimensional numerical models, the transport of radioactive solutes and colloids in the UZ, under ambient conditions, from the repository horizon to the water table at Yucca Mountain, Nevada.

S. Magnuson

2004-11-01T23:59:59.000Z

107

SEISMIC VULNERABILITY ASSESSMENT USING AMBIENT VIBRATIONS  

E-Print Network [OSTI]

SEISMIC VULNERABILITY ASSESSMENT USING AMBIENT VIBRATIONS: METHOD AND VALIDATION Clotaire Michel, France cmichel@obs.ujf-grenoble.fr Abstract Seismic vulnerability in wide areas is usually assessed like USA or Italy. France is a country with moderate seismicity so that it requires lower-cost methods

Paris-Sud XI, Université de

108

Projection screen having reduced ambient light scattering  

DOE Patents [OSTI]

An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.

Sweatt, William C. (Albuquerque, NM)

2010-05-11T23:59:59.000Z

109

Noise emission during the first powerboat race in an Alpine lake and potential impact on fish communities  

E-Print Network [OSTI]

, drilling, seismic explorations or energy production hydroelectric power plants, offshore windmills Myrberg- tivities, besides traffic or hydroelectric power plants, are largely responsible for increased noise levels

Ladich, Friedrich

110

An investigation of current noise measurement on hybrid Ta?N-Cr-Au thin film resistors and their relationship to film adhesion  

E-Print Network [OSTI]

after approximately 5. 0 hours of exposure to the gold etch ambient. Therefore, the decision was made to implement this controlled procedure of "de-adhesion" for the noise studies on the thin film resistor samples. 21 At first this contaminating... The results for each sample of this study are shown as a graph of noise index versus hours exposure to the gold etch ambient. The entire set of 28 graphs has been divided 0 into two process groups: one for the 200 C samples and one for the 350 C samples...

Bibeau, Wayne Edward

1978-01-01T23:59:59.000Z

111

5th International Meeting Wind Turbine Noise  

E-Print Network [OSTI]

1 5th International Meeting on Wind Turbine Noise Denver 28 ­ 30 August 2013 Wind Turbine Noise Broadband noise generated aerodynamically is the dominant noise source for a modern wind turbine(Brooks et turbines . First, a wall pressure spectral model proposed recently by Rozenberg, Robert and Moreau

Paris-Sud XI, Université de

112

The Shot Noise Thermometer Lafe Frederick Spietz  

E-Print Network [OSTI]

Abstract The Shot Noise Thermometer Lafe Frederick Spietz 2006 This thesis describes the development and testing of the shot noise thermometer, or SNT, a new kind of noise thermometer based thermometer, the noise power from a tunnel junction is measured as a function of the DC voltage across

113

The Shot Noise Thermometer Lafe Frederick Spietz  

E-Print Network [OSTI]

Abstract The Shot Noise Thermometer Lafe Frederick Spietz 2006 This thesis describes the development and testing of the shot noise thermome- ter, or SNT, a new kind of noise thermometer based thermometer, the noise power from a tunnel junction is measured as a function of the DC voltage across

114

Vermont Air Pollution Control Regulations, Ambient Air Quality Standards (Vermont)  

Broader source: Energy.gov [DOE]

The ambient air quality standards are based on the national ambient air quality standards. The Vermont standards are classified as primary and secondary standards and judged adequate to protect...

115

Re:Cycle - a Generative Ambient Video Engine  

E-Print Network [OSTI]

Our current ambient video engine is in the early stages ofa Generative Ambient Video Engine Jim Bizzocchi Assistantis complete. 2.1 The Re:Cycle Engine Re:Cycle incorporates a

Bizzocchi, Jim; Ben Youssef, Belgacem; Quan, Brian; Suzuki, Wakiko; Bagheri, Majid; Riecke, Bernhard E.

2009-01-01T23:59:59.000Z

116

ambient air pollutants: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air Pollution Engineering Websites Summary: ORIGINAL ARTICLE Ambient Air Pollution and...

117

Julio Ignacio Gamarra Rocandio Subdirector General de Evaluacin Ambiental  

E-Print Network [OSTI]

protección del medio ambiente. Desde 1988, en España, la práctica de la evaluación de impacto ambiental (EIA Ambiental uiero empezar haciendo una re- flexión sobre la oportunidad de la Directiva de evaluación ambiental de planes y programas y del proyecto de Ley para su transposición. El proyecto de Ley sigue la

Espigares, Tíscar

118

Ambient Control Systems | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORT Americium/Curium VitrificationAltensol Jump to:Ambient Control

119

Spin noise spectroscopy of ZnO  

SciTech Connect (OSTI)

We investigate the thermal equilibrium dynamics of electron spins bound to donors in nanoporous ZnO by optical spin noise spectroscopy. The spin noise spectra reveal two noise contributions: A weak spin noise signal from undisturbed localized donor electrons with a dephasing time of 24 ns due to hyperfine interaction and a strong spin noise signal with a spin dephasing time of 5 ns which we attribute to localized donor electrons which interact with lattice defects.

Horn, H.; Berski, F.; Hübner, J.; Oestreich, M. [Institute for Solid State Physics, Leibniz Universität Hannover, Appelstr. 2, 30167 Hannover (Germany); Balocchi, A.; Marie, X. [INSA-CNRS-UPS, LPCNO, Université de Toulouse, 135 Av. de Rangueil, 31077 Toulouse (France); Mansur-Al-Suleiman, M.; Bakin, A.; Waag, A. [Institute of Semiconductor Technology, Technische Universität Braunschweig, Hans-Sommer-Straße 66, 38106 Braunschweig (Germany)

2013-12-04T23:59:59.000Z

120

Emissions Standards and Ambient Environmental Quality Standards in  

E-Print Network [OSTI]

Emissions Standards and Ambient Environmental Quality Standards in Stochastic Receiving Media quality standards, for in- stance SO2 emissions are capped under Title IV of the U.S. Clean Air Act Amendments while ambient SO2 concentrations are limited under National Ambient Air Quality Standards (NAAQS

Silver, Whendee

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

1. INTRODUCCIN El procedimiento de Evaluacin de Impacto Ambiental (en  

E-Print Network [OSTI]

1. INTRODUCCI�N El procedimiento de Evaluación de Impacto Ambiental (en adelante EIA), originario del mismo. Este resultado refuerza el papel crucial de la Decla- ración de Impacto Ambiental (DIA en adelante) en el pro- ceso de EIA ya que, junto al Estudio de Impacto Ambiental, se convierte en la

Espigares, Tíscar

122

1. INTRODUCCIN El procedimiento de Evaluacin de Impacto Ambiental (EIA)  

E-Print Network [OSTI]

1. INTRODUCCI�N El procedimiento de Evaluación de Impacto Ambiental (EIA) de proyectos, refundido en proyectos de ingeniería civil para favorecer el procedimiento de Evaluación de Impacto Ambiental a Evaluación de Impacto Ambiental (EIA), planteándose, de esta forma, unas exigencias mínimas que agilicen de

Espigares, Tíscar

123

E-Print Network 3.0 - ambiente na periferia Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

o meio ambiente antrtico Summary: Dados Internacionais de Catalogao na Publicao (CIP) O Brasil e o meio ambiente antrtico : ensino... projeto ambiental Mudanas...

124

E-Print Network 3.0 - ambiental em obras Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

87 ANLISIS DESCRIPTIVO DE LA "DIRECCIN AMBIENTAL DE OBRA" EN LAS DECLARACIONES DE IMPACTO AMBIENTAL... "Direccin Ambiental de Obra" en las Declaraciones de Impacto...

125

E-Print Network 3.0 - amendoim em ambiente Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

com o ambiente... rgos ambientais. Em vez de ter queimadas controladas e com menor impacto ambiental, o resultado o... . Instituto Brasileiro do Meio Ambiente e dos...

126

E-Print Network 3.0 - ambientes alterados limitaciones Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

, degradacin ambiental y gestin urbana. A este primer taller titulado "Degradacin Ambiental: el impacto de la... gestin ambiental sobre amenazas y vulnerabilidades", le...

127

E-Print Network 3.0 - ambient air quality-a Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EHHE; January 2006 7 Topics Air, Ambient (Outdoor) Air, Indoor Disasters Lead... pollutants in ambient air Hazardous or toxic substances released in ambient air Residence in...

128

E-Print Network 3.0 - ambient air monitoring Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EHHE; January 2006 7 Topics Air, Ambient (Outdoor) Air, Indoor Disasters Lead... pollutants in ambient air Hazardous or toxic substances released in ambient air Residence in...

129

Assessing residential exposure to urban noise using environmental models: does the size of the local living  

E-Print Network [OSTI]

1 Assessing residential exposure to urban noise using environmental models: does the size on the quantification of the exposure level in a surface defined as the subject's exposure area. For residential residential buildings. Twelve noise exposure indicators have been used to assess inhabitants' exposure

Paris-Sud XI, Université de

130

Correlated noise in networks of gravitational-wave detectors: Subtraction and mitigation  

E-Print Network [OSTI]

demonstrates that correlated magnetic fields from Schumann resonances can produce correlated strain noise over with continued integration. In a previous paper, we showed that magnetic fields from global Schumann resonances correlated noise from Schumann resonances is too low level to affect stochastic searches with first

Christensen, Nelson

131

An absolute Johnson noise thermometer  

E-Print Network [OSTI]

We developed an absolute Johnson noise thermometer (JNT), an instrument to measure the thermodynamic temperature of a sensing resistor, with traceability to voltage, resistance and frequency quantities. The temperature is measured in energy units, and can be converted to SI units (kelvin) with the accepted value of the Boltzmann constant kb; or, conversely, it can be employed to perform measurements at the triple point of water, and obtain a determination of kb. The thermometer is composed of a correlation spectrum analyzer an a calibrated noise source, both constructed around commercial mixed-signal boards. The calibrator generates a pseudorandom noise, by digital synthesis and amplitude scaling with inductive voltage dividers; the signal spectrum is a frequency comb covering the measurement bandwidth. JNT measurements at room temperature are compatible with those of a standard platinum resistance thermometer within the combined uncertainty of 60 ppm. A path towards future improvements of JNT accuracy is also sketched.

Luca Callegaro; Vincenzo D'Elia; Marco Pisani; Alessio Pollarolo

2009-01-30T23:59:59.000Z

132

Overcoming correlated noise in quantum systems: How mediocre clocks make good qubits  

E-Print Network [OSTI]

A precise measurement of dephasing over a range of timescales is critical for improving quantum gates beyond the error correction threshold. We present a method for measuring dephasing in experimental quantum systems based on randomized benchmarking that excels at measuring small levels of phase noise at the timescales relevant to gates. We find our SQUID-based qubit is not limited by 1/f flux noise, but instead observe a previously unreported telegraph noise mechanism. We demonstrate that full understanding of dephasing allows for the use of "mediocre clocks"--systems with correlated phase noise--as good qubits.

P. J. J. O'Malley; J. Kelly; R. Barends; B. Campbell; Y. Chen; Z. Chen; B. Chiaro; A. Dunsworth; A. G. Fowler; I. -C. Hoi; E. Jeffrey; A. Megrant; J. Mutus; C. Neill; C. Quintana; P. Roushan; D. Sank; A. Vainsencher; J. Wenner; T. C. White; A. N. Korotkov; A. N. Cleland; John M. Martinis

2014-11-10T23:59:59.000Z

133

Low noise optical position sensor  

DOE Patents [OSTI]

A novel optical position sensor is described that uses two component photodiodes electrically connected in parallel, with opposing polarities. A lens provides optical gain and restricts the acceptance angle of the detector. The response of the device to displacements of an optical spot is similar to that of a conventional bi-cell type position sensitive detector. However, the component photodiode design enables simpler electronic amplification with inherently less electrical noise than the bi-cell. Measurements by the sensor of the pointing noise of a focused helium-neon laser as a function of frequency demonstrate high sensitivity and suitability for optical probe beam deflection experiments.

Spear, Jonathan David (Berkeley, CA)

1999-01-01T23:59:59.000Z

134

Low noise optical position sensor  

DOE Patents [OSTI]

A novel optical position sensor is described that uses two component photodiodes electrically connected in parallel, with opposing polarities. A lens provides optical gain and restricts the acceptance angle of the detector. The response of the device to displacements of an optical spot is similar to that of a conventional bi-cell type position sensitive detector. However, the component photodiode design enables simpler electronic amplification with inherently less electrical noise than the bi-cell. Measurements by the sensor of the pointing noise of a focused helium-neon laser as a function of frequency demonstrate high sensitivity and suitability for optical probe beam deflection experiments. 14 figs.

Spear, J.D.

1999-03-09T23:59:59.000Z

135

Low-noise pulse conditioner  

DOE Patents [OSTI]

A low-noise pulse conditioner is provided for driving electronic digital processing circuitry directly from differentially induced input pulses. The circuit uses a unique differential-to-peak detector circuit to generate a dynamic reference signal proportional to the input peak voltage. The input pulses are compared with the reference signal in an input network which operates in full differential mode with only a passive input filter. This reduces the introduction of circuit-induced noise, or jitter, generated in ground referenced input elements normally used in pulse conditioning circuits, especially speed transducer processing circuits.

Bird, David A. (Oak Ridge, TN)

1983-01-01T23:59:59.000Z

136

Laser Noise Reduction in Air  

E-Print Network [OSTI]

Fluctuations of the white-light supercontinuum produced by ultrashort laser pulses in selfguided filaments (spatio-temporal solitons) in air are investigated. We demonstrate that correlations exist within the white-light supercontinuum, and that they can be used to significantly reduce the laser intensity noise by filtering the spectrum. More precisely, the fundamental wavelength is anticorrelated with the wings of the continuum, while conjugated wavelength pairs on both sides of the continuum are strongly correlated. Spectral filtering of the continuum reduces the laser intensity noise by 1.2 dB, showing that fluctuations are rejected to the edges of the spectrum.

Pierre Bejot; Jerome Kasparian; Estelle Salmon; Roland Ackermann; Nicolas Gisin; Jean-Pierre Wolf

2006-08-09T23:59:59.000Z

137

Performance Evaluation of Reverberant Chamber Background Noise Levels  

E-Print Network [OSTI]

?to?simplify?the?huge?range?of?products.?All ?products?shall?be?rated?in?accordance? with?the?HVI?rating?system.?According?to?this,?all? devices?with?loudness?up?to?0.3?sones? shall?be?rated?as??below?0.3?sones?.?All?devices?fr om?0.4?sones?up?to?1.5?sones?shall?be? rounded? to? the? nearest? 0...

Ravi, Sankaranarayana

2012-02-14T23:59:59.000Z

138

Citizen Noise Pollution Monitoring Maisonneuve  

E-Print Network [OSTI]

[Information Systems Applications]: Miscellaneous General Terms Management, Measurement, Human Factors-localisation, tagging, mobile phones. 1. INTRODUCTION Noise pollution is a major problem in urban environments problems such as air and water pollution. With this background, there is a clear need to manage

TAGora project

139

A computer program for HVDC converter station RF noise calculations  

SciTech Connect (OSTI)

HVDC converter station operations generate radio frequency (RF) electromagnetic (EM) noise which could interfere with adjacent communication and computer equipment, and carrier system operations. A generic Radio Frequency Computer Analysis Program (RAFCAP) for calculating the EM noise generated by valve ignition of a converter station has been developed as part of a larger project. The program calculates RF voltages, currents, complex power, ground level electric field strength and magnetic flux density in and around an HVDC converter station. The program requires the converter station network to be represented by frequency dependent impedance functions. Comparisons of calculated and measured values are given for an actual HVDC station to illustrate the validity of the program. RAFCAP is designed to be used by engineers for the purpose of calculating the RF noise produced by the igniting of HVDC converter valves.

Kasten, D.G.; Caldecott, R.; Sebo, S.A. (Ohio State Univ., Columbus, OH (United States). Dept. of Electrical Engineering); Liu, Y. (Virginia Polytechnic Inst. State Univ., Blacksburg, VA (United States). Bradley Dept. of Electrical Engineering)

1994-04-01T23:59:59.000Z

140

Suspending Effect on Low-Frequency Charge Noise in Graphene Quantum Dot  

E-Print Network [OSTI]

Charge noise is critical in the performance of gate-controlled quantum dots (QDs). Here we show the 1/f noise for a microscopic graphene QD is substantially larger than that for a macroscopic graphene field-effect transistor (FET), increasing linearly with temperature. To understand its origin, we suspended the graphene QD above the substrate. In contrast to large area graphene FETs, we find that a suspended graphene QD has an almost-identical noise level as an unsuspended one. Tracking noise levels around the Coulomb blockade peak as a function of gate voltage yields potential fluctuations of order 1 "{\\mu}eV", almost one order larger than in GaAs/GaAlAs QDs. Edge states rather than substrate-induced disorders, appear to dominate the 1/f noise, thus affecting the coherency of graphene nano-devices.

Xiang-Xiang Song; Hai-Ou Li; Jie You; Tian-Yi Han; Gang Cao; Tao Tu; Ming Xiao; Guang-Can Guo; Hong-Wen Jiang; Guo-Ping Guo

2014-06-16T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Statistical static timing analysis considering the impact of power supply noise in VLSI circuits  

E-Print Network [OSTI]

As semiconductor technology is scaled and voltage level is reduced, the impact of the variation in power supply has become very significant in predicting the realistic worst-case delays in integrated circuits. The analysis of power supply noise...

Kim, Hyun Sung

2009-06-02T23:59:59.000Z

142

Power supply noise in delay testing  

E-Print Network [OSTI]

As technology scales into the Deep Sub-Micron (DSM) regime, circuit designs have become more and more sensitive to power supply noise. Excessive noise can significantly affect the timing performance of DSM designs and cause non-trivial additional...

Wang, Jing

2009-05-15T23:59:59.000Z

143

Sensing Applications of Fluctuations and Noise  

E-Print Network [OSTI]

Noise and time-dependent fluctuations are usually undesirable signals. However, they have many applications. This dissertation deals with two kinds of sensing applications of fluctuation and noise: soil bulk density assessment and bacterium sensing...

Chang, Hung-Chih

2011-02-22T23:59:59.000Z

144

Ambient Operation of Li/Air Batteries  

SciTech Connect (OSTI)

In this work, Li/air batteries based on nonaqueous electrolytes were investigated in ambient conditions (with an oxygen partial pressure of 0.21 atm and relative humidity of ~20%). A heat-sealable polymer membrane was used as both an oxygen-diffusion membrane and as a moisture barrier for Li/air batteries. The membrane also can minimize the evaporation of the electrolyte from the batteries. Li/air batteries with this membrane can operate in ambient conditions for more than one month with a specific energy of 362 Wh kg-1, based on the total weight of the battery including its packaging. Among various carbon sources used in this work, Li/air batteries using Ketjenblack (KB) carbon-based air electrodes exhibited the highest specific energy. However, KB-based air electrodes expanded significantly and absorbed much more electrolyte than electrodes made from other carbon sources. The weight distribution of a typical Li/air battery using the KB-based air electrode was dominated by the electrolyte (~70%). Lithium-metal anodes and KB-carbon anodes account for only 5.12% and 5.78% of the battery weight, respectively. We also found that only ~ 20% of the mesopore volume of the air electrode was occupied by reaction products after discharge. To further improve the specific energy of the Li/air batteries, the microstructure of the carbon electrode needs to be further improved to absorb much less electrolyte while still holding significant amounts of reaction products

Zhang, Jiguang; Wang, Deyu; Xu, Wu; Xiao, Jie; Williford, Ralph E.

2010-07-01T23:59:59.000Z

145

Effects of Noise on Rodent Physiology  

E-Print Network [OSTI]

Noise on Rodent Physiology Ann Linda Baldwin University ofarticle should be addressed to Ann Baldwin, Department of

Baldwin, Ann Linda

2007-01-01T23:59:59.000Z

146

Noise Compensation for Subspace Gaussian Mixture Models  

E-Print Network [OSTI]

Noise Compensation for Subspace Gaussian Mixture Models Liang Lu University of Edinburgh Joint work condition (i.e. noise), the gain disappears Goal Noise compensation for SGMM Method Model space compensation . . .· · · · · · · · · · ·· · ·· · ···· · ·· · ·· vjk Liang Lu, Interspeech, September, 2012 R T S C R T S C #12;Noise compensation Larger modelling

Edinburgh, University of

147

E-Print Network 3.0 - atmospheric pollutants levels Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dispersion a. Maximum ground-level ambient concentration b... Pollution Prevention, Control and Sustainability Instructor: V.M. Fthenakis, Tel: (212) 854-8885, Email: vmf......

148

Automotive friction-induced noises A. Elmaiana  

E-Print Network [OSTI]

Automotive friction-induced noises A. Elmaiana , J.-M. Duffala , F. Gautiera , C. Pezeratb and J, France 3143 #12;Friction-induced noises are numerous in the automotive field. They also involve a large friction-induced noises with simple structures and automotive materials. Qualitative sensitivity studies

Paris-Sud XI, Université de

149

Charge Noise in Graphene Transistors Iddo Heller,,  

E-Print Network [OSTI]

Charge Noise in Graphene Transistors Iddo Heller,,§ Sohail Chatoor, Jaan Ma¨nnik, Marcel A. G an experimental study of 1/f noise in liquid-gated graphene transistors. We show that the gate dependence to the graphene, while at high carrier density it is consistent with noise due to scattering in the channel

Dekker, Cees

150

Noise canceling in-situ detection  

DOE Patents [OSTI]

Technologies applicable to noise canceling in-situ NMR detection and imaging are disclosed. An example noise canceling in-situ NMR detection apparatus may comprise one or more of a static magnetic field generator, an alternating magnetic field generator, an in-situ NMR detection device, an auxiliary noise detection device, and a computer.

Walsh, David O.

2014-08-26T23:59:59.000Z

151

Fossil Biodiversity: Red Noise Plus Signal  

E-Print Network [OSTI]

We have examined the Fourier power spectrum as well as the Hurst exponent of extinction, origination, and total biodiversity in the marine fossil record, using a recently improved geologic timescale. We find all of them strongly inconsistent with past claims of self-similarity as well as inconsistent with random walk behavior. Instead, they are dominated by low-frequency power, with approximate f^-2 power over one decade in frequency. The spectrum turns over at about 10^8 y, lending plausibility to connections with galactic dynamics. Even in the background of this low-frequency dominance, a previously noted 62 My biodiversity cycle stands out with better than 99% confidence above the noise level, accounting for about 35% of the total variance in the fossil biodiversity record.

Adrian L. Melott; Bruce S. Lieberman

2006-06-14T23:59:59.000Z

152

Fossil Biodiversity: Red Noise Plus Signal  

E-Print Network [OSTI]

We have examined the Fourier power spectrum as well as the Hurst exponent of extinction, origination, and total biodiversity in the marine fossil record, using a recently improved geologic timescale. We find all of them strongly inconsistent with past claims of self-similarity as well as inconsistent with random walk behavior. Instead, they are dominated by low-frequency power, with approximate f^-2 power over one decade in frequency. The spectrum turns over at about 10^5 y, lending plausibility to connections with galactic dynamics. Even in the background of this low-frequency dominance, a previously noted 62 My biodiversity cycle stands out with better than 99% confidence above the noise level, accounting for about 35% of the total variance in the fossil biodiversity record.

Melott, A L; Melott, Adrian L.; Lieberman, Bruce S.

2006-01-01T23:59:59.000Z

153

Adaptive mean filtering for noise reduction in CT polymer gel dosimetry  

SciTech Connect (OSTI)

X-ray computed tomography (CT) as a method of extracting 3D dose information from irradiated polymer gel dosimeters is showing potential as a practical means to implement gel dosimetry in a radiation therapy clinic. However, the response of CT contrast to dose is weak and noise reduction is critical in order to achieve adequate dose resolutions with this method. Phantom design and CT imaging technique have both been shown to decrease image noise. In addition, image postprocessing using noise reduction filtering techniques have been proposed. This work evaluates in detail the use of the adaptive mean filter for reducing noise in CT gel dosimetry. Filter performance is systematically tested using both synthetic patterns mimicking a range of clinical dose distribution features as well as actual clinical dose distributions. Both low and high signal-to-noise ratio (SNR) situations are examined. For all cases, the effects of filter kernel size and the number of iterations are investigated. Results indicate that adaptive mean filtering is a highly effective tool for noise reduction CT gel dosimetry. The optimum filtering strategy depends on characteristics of the dose distributions and image noise level. For low noise images (SNR {approx}20), the filtered results are excellent and use of adaptive mean filtering is recommended as a standard processing tool. For high noise images (SNR {approx}5) adaptive mean filtering can also produce excellent results, but filtering must be approached with more caution as spatial and dose distortions of the original dose distribution can occur.

Hilts, Michelle; Jirasek, Andrew [Medical Physics, BC Cancer Agency-Vancouver Island Centre, Victoria, British Columbia, V8R6V5 (Canada); Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, V8W2Y2 (Canada)

2008-01-15T23:59:59.000Z

154

Noise suppressing capillary separation system  

DOE Patents [OSTI]

A noise-suppressing capillary separation system for detecting the real-time presence or concentration of an analyte in a sample is provided. The system contains a capillary separation means through which the analyte is moved, a coherent light source that generates a beam which is split into a reference beam and a sample beam that irradiate the capillary, and a detector for detecting the reference beam and the sample beam light that transmits through the capillary. The laser beam is of a wavelength effective to be absorbed by a chromophore in the capillary. The system includes a noise suppressing system to improve performance and accuracy without signal averaging or multiple scans. 13 figs.

Yeung, E.S.; Xue, Y.

1996-07-30T23:59:59.000Z

155

COMPANHIA AMBIENTAL DO ESTADO DE SO PAULO ANEXO NICO  

E-Print Network [OSTI]

DE IMPACTO AMBIENTAL (de que tratam, respectivamente, o § 3º do artigo 4º (RAP) e o § 1º do artigo 6º;Apresentação A Avaliação de Impacto Ambiental é uma ferramenta poderosa para antecipar e prevenir os efeitos realizada pelos técnicos dos órgãos ambientais. Nesse sentido, a Diretoria de Avaliação de Impacto Ambiental

Jardim, Wilson de Figueiredo

156

Manuel Garca Snchez-Colomer -1 Evaluacin del impacto ambiental  

E-Print Network [OSTI]

Manuel García Sánchez-Colomer - 1 Evaluación del impacto ambiental Temas 12 - 13 Tema 13 Evaluación del impacto ambiental Temas 12 - 13 Factor del medio: medio biótico · Vegetación · Fauna terrestre justificada #12;Manuel García Sánchez-Colomer - 4 Evaluación del impacto ambiental Temas 12 - 13 Medio biótico

Espigares, Tíscar

157

MAESTRA EN DESARROLLO Y AMBIENTE Objetivo del programa  

E-Print Network [OSTI]

recursos naturales renovables 3 Política y legislación ambiental 3 Fundamentos de investigación 3

Vásquez, Carlos

158

Sílabo del curso de Ciencia y Medio Ambiente.  

E-Print Network [OSTI]

??Ciencia y medio ambiente es un curso de formación teórico–práctico, orientado a estudiantes de la especialidad de Ingeniería en Sistemas Computacionales. El propósito de la… (more)

[No author

2014-01-01T23:59:59.000Z

159

ambiental environmental scanning: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Sciences and Ecology Websites Summary: into the ambient air from uranium mill tailings disposal sites. Subpart T continues to apply to unlicensed uranium, Criteria...

160

AGENCIA DE PROTECCIN DEL MEDIO AMBIENTE Comunicado de Prensa  

E-Print Network [OSTI]

ambientales a fin de mejorar nuestra políticas de protección ambiental y proteger la sustentabilidad de

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

ambient igf leading: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

system concept for the living assistance domain based on ambient intelligence technology and discuss the resulting challenges for the software engineering discipline....

162

ambient fine aerosols: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

soluble in water: 2. Isolation of acid, neutral, and basic fractions by modified size Weber, Rodney 4 Chemical characterization of the ambient organic aerosol soluble in water:...

163

ambient ultrafine aerosols: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

soluble in water: 2. Isolation of acid, neutral, and basic fractions by modified size Weber, Rodney 4 Ambient aerosol sampling using the Aerodyne Aerosol Mass Spectrometer...

164

ambient air samples: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ambient air. A small amount of these nuclei mode particles contain solid ash from lube oil) South Coast Air Quality Management District California Air Resources Board Cummins...

165

ambientes globalizados um: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

operando em Bateladas (more) Gomes, Luciano de Andrade 2008-01-01 13 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

166

ambiental das trilhas: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

effektiv, (more) Nimmerrichter, Clemens Wolfgang 2010-01-01 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

167

ambient dissolved metal: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

These include corrosion and oxidation resistant coatings,1 preparation of materials by self-propagating- fusion can take place during deposition, under ambient con- ditions, and...

168

ambient pressure estimation: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

localized orbitals may coexist with supercon- ductivity, the other being Am. In all rare earths Schilling, James 119 Nanoparticle manufacture ambient air chemical and ph...

169

Coating thermal noise for arbitrary shaped beams  

E-Print Network [OSTI]

Advanced LIGO's sensitivity will be limited by coating noise. Though this noise depends on beam shape, and though nongaussian beams are being seriously considered for advanced LIGO, no published analysis exists to compare the quantitative thermal noise improvement alternate beams offer. In this paper, we derive and discuss a simple integral which completely characterizes the dependence of coating thermal noise on shape. The derivation used applies equally well, with minor modifications, to all other forms of thermal noise in the low-frequency limit.

Richard O'Shaughnessy

2006-10-13T23:59:59.000Z

170

Spectral analysis of ambient weather patterns  

SciTech Connect (OSTI)

A Fourier spectral analysis of ambient weather data, consisting of global and direct solar radiation, dry and wet bulb temperatures, and wind speed, is given. By analyzing the heating and cooling seasons independently, seasonal variations are isolated and a cleaner spectrum emerges. This represents an improvement over previous work in this area, in which data for the entire year were analyzed together. As a demonstration of the efficacy of this method, synthetic data constructed with a small number of parameters are used in typical simulations, and the results are compared with those obtained with the original data. A spectral characterization of fluctuations around the moving average is given, and the changes in the fluctuation from season to season are examined.

Anderson, J.V.; Subbarao, K.

1981-01-01T23:59:59.000Z

171

Ambient-pressure silica aerogel films  

SciTech Connect (OSTI)

Very highly porous (aerogel) silica films with refractive index in the range 1.006--1.05 (equivalent porosity 98.5--88%) were prepared by an ambient-pressure process. It was shown earlier using in situ ellipsometric imaging that the high porosity of these films was mainly attributable to the dilation or `springback` of the film during the final stage of drying. This finding was irrefutably reconfirmed by visually observing a `springback` of >500% using environmental scanning electron microscopy (ESEM). Ellipsometry and ESEM also established the near cent per cent reversibility of aerogel film deformation during solvent intake and drying. Film thickness profile measurements (near the drying line) for the aerogel, xerogel and pure solvent cases are presented from imaging ellipsometry. The thickness of these films (crack-free) were controlled in the range 0.1-3.5 {mu}m independent of refractive index.

Prakash, S.S. [New Mexico Univ., Albuquerque, NM (United States); Brinker, C.J. [New Mexico Univ., Albuquerque, NM (United States)]|[Sandia National Labs., Albuquerque, NM (United States); Hurd, A.J. [Sandia National Labs., Albuquerque, NM (United States)

1994-12-31T23:59:59.000Z

172

Effect of Ambient Design Temperature on Air-Cooled Binary Plant Output  

SciTech Connect (OSTI)

Air-cooled binary plants are designed to provide a specified level of power production at a particular air temperature. Nominally this air temperature is the annual mean or average air temperature for the plant location. This study investigates the effect that changing the design air temperature has on power generation for an air-cooled binary plant producing power from a resource with a declining production fluid temperature and fluctuating ambient temperatures. This analysis was performed for plants operating both with and without a geothermal fluid outlet temperature limit. Aspen Plus process simulation software was used to develop optimal air-cooled binary plant designs for specific ambient temperatures as well as to rate the performance of the plant designs at off-design operating conditions. Results include calculation of annual and plant lifetime power generation as well as evaluation of plant operating characteristics, such as improved power generation capabilities during summer months when electric power prices are at peak levels.

Dan Wendt; Greg Mines

2011-10-01T23:59:59.000Z

173

GUA DA SUSTENTABILIDADE ENERXA VICERREITORA DE INFRAESTRUTURAS E XESTIN AMBIENTAL  

E-Print Network [OSTI]

GUÍA DA SUSTENTABILIDADE ­ ENERXÍA VICERREITORÍA DE INFRAESTRUTURAS E XESTI�N AMBIENTAL -A UDC ven enerxética non quedando atrás na carreira da persecución da sustentabilidade ambiental, económica e social

Fraguela, Basilio B.

174

MESTRADO EM MICROBIOLOGIA BIOTECNOLOGIA AMBIENTAL Instituto Superior Tcnico  

E-Print Network [OSTI]

MESTRADO EM MICROBIOLOGIA BIOTECNOLOGIA AMBIENTAL ­ Instituto Superior Técnico Objectivos: Na impacto de diferentes tipos de poluentes em ecossistemas naturais (incluindo, a avaliação e gestão do risco ambiental), e sobre a aplicação de métodos da biotecnologia na resolução de problemas ambientais

Instituto de Sistemas e Robotica

175

Johnson Noise Thermometry System Requirements  

SciTech Connect (OSTI)

This document is intended to capture the requirements for the architecture of the developmental electronics for the ORNL-lead drift-free Johnson Noise Thermometry (JNT) project conducted under the Instrumentation, Controls, and Human-Machine Interface (ICHMI) research pathway of the U.S. Department of Energy (DOE) Advanced Small Modular Reactor (SMR) Research and Development (R&D) program. The requirements include not only the performance of the system but also the allowable measurement environment of the probe and the allowable physical environment of the associated electronics. A more extensive project background including the project rationale is available in the initial project report [1].

Britton Jr, Charles L [ORNL; Roberts, Michael [ORNL; Ezell, N Dianne Bull [ORNL; Qualls, A L [ORNL; Holcomb, David Eugene [ORNL

2013-01-01T23:59:59.000Z

176

Low frequency noise measurements of resonant tunnel diodes  

E-Print Network [OSTI]

-n junctions, and tunnel diodes 9] ~ Techniques for obtaining information such as energy levels, lifetimes, and concentrations of these conduction mechanisms have been determined for Schottky barriers, p-n junctions, and tunnel diodes. Some...LOW FREQUENCY NOISE MEASUREMENTS OF RESONANT TUNNEL DIODES A Thesis by SAMUEL SIMON VILLAREAL Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

Villareal, Samuel Simon

2012-06-07T23:59:59.000Z

177

Filtering Additive Measurement Noise with Maximum Entropy in the Mean  

E-Print Network [OSTI]

The purpose of this note is to show how the method of maximum entropy in the mean (MEM) may be used to improve parametric estimation when the measurements are corrupted by large level of noise. The method is developed in the context on a concrete example: that of estimation of the parameter in an exponential distribution. We compare the performance of our method with the bayesian and maximum likelihood approaches.

Henryk Gzyl; Enrique ter Horst

2007-09-04T23:59:59.000Z

178

Signal processing method and system for noise removal and signal extraction  

DOE Patents [OSTI]

A signal processing method and system combining smooth level wavelet pre-processing together with artificial neural networks all in the wavelet domain for signal denoising and extraction. Upon receiving a signal corrupted with noise, an n-level decomposition of the signal is performed using a discrete wavelet transform to produce a smooth component and a rough component for each decomposition level. The n.sup.th level smooth component is then inputted into a corresponding neural network pre-trained to filter out noise in that component by pattern recognition in the wavelet domain. Additional rough components, beginning at the highest level, may also be retained and inputted into corresponding neural networks pre-trained to filter out noise in those components also by pattern recognition in the wavelet domain. In any case, an inverse discrete wavelet transform is performed on the combined output from all the neural networks to recover a clean signal back in the time domain.

Fu, Chi Yung (San Francisco, CA); Petrich, Loren (Lebanon, OR)

2009-04-14T23:59:59.000Z

179

Noise study of the digital seismic system amplifiers applied to earth noise measurements  

SciTech Connect (OSTI)

Some major noise problems afflicting the Digital Seismic System are briefly examined for the purpose of improving the signal-to-noise ratio for earth noise measurements. After concluding that the Tustin Electronics Co. 1560 instrumentation amplifiers presently being used in the system obscure the earth noise data, a comprehensive study (part experimental and part theoretical) of amplifier noise is performed. Noise curves in the approximate frequency range of 0.01 to 50 Hz for the Tustin amplifiers as well as for a new design based on the PMI SSS725 operational amplifier are experimentally determined. The curves, which include noise current and noise voltage densities as well as total noise, are compared to each other, and to the Peterson low earth noise curve. The comparisons are done with amplifier inputs shorted, connected to one and then two 500-..cap omega.. seismometer data coils, and connected to one 20-k..cap omega.. seismometer data coil. The total noise curve of the new amplifier is found to shift further below that of the Tustin amplifier as data coil resistance is increased. A goal of lowering amplifier noise 10 dB or more below the Peterson earth noise power density curve for frequencies greater than .03 Hz is desired. The new amplifier design, used in conjunction with a 20-k..cap omega.. data coil, is found to satisfy this 10 dB or more signal-to-noise ratio for earth noise measurements. It is also found that the difference between earth noise and new amplifier noise magnitudes is increased as data coil resistance is increased.

Valk, D.

1982-08-31T23:59:59.000Z

180

Quantum-projection-noise-limited interferometry with coherent atoms in a Ramsey-type setup  

SciTech Connect (OSTI)

Every measurement of the population in an uncorrelated ensemble of two-level systems is limited by what is known as the quantum projection noise limit. Here, we present quantum-projection-noise-limited performance of a Ramsey-type interferometer using freely propagating coherent atoms. The experimental setup is based on an electro-optic modulator in an inherently stable Sagnac interferometer, optically coupling the two interfering atomic states via a two-photon Raman transition. Going beyond the quantum projection noise limit requires the use of reduced quantum uncertainty (squeezed) states. The experiment described demonstrates atom interferometry at the fundamental noise level and allows the observation of possible squeezing effects in an atom laser, potentially leading to improved sensitivity in atom interferometers.

Doering, D.; McDonald, G.; Debs, J. E.; Figl, C.; Altin, P. A.; Bachor, H.-A.; Robins, N. P.; Close, J. D. [Australian Research Council Centre of Excellence for Quantum-Atom Optics, Australian National University, Canberra, 0200 (Australia); Department of Quantum Science, Research School of Physics and Engineering, Australian National University, Canberra, 0200 (Australia)

2010-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Wind Turbine Acoustic Noise A white paper  

E-Print Network [OSTI]

Wind Turbine Acoustic Noise A white paper Prepared by the Renewable Energy Research Laboratory...................................................................... 8 Sound from Wind Turbines .............................................................................................. 10 Sources of Wind Turbine Sound

Massachusetts at Amherst, University of

182

How Can Random Noise Help Us  

E-Print Network [OSTI]

How Can Random Noise Help Us. Global Transports from Thermal Fluctuations. Aaron N. K. Yip. Department of Mathematics. Purdue University. 0. 1. 2. 3. 4. 5. 6.

2009-03-18T23:59:59.000Z

183

Effects of Tidal Turbine Noise on Fish Task 2.1.3.2: Effects on Aquatic Organisms: Acoustics/Noise - Fiscal Year 2011 - Progress Report - Environmental Effects of Marine and Hydrokinetic Energy  

SciTech Connect (OSTI)

Naturally spawning stocks of Chinook salmon (Oncorhynchus tshawytscha) that utilize Puget Sound are listed as threatened (http://www.nwr.noaa.gov/ESA-Salmon-Listings/Salmon-Populations/ Chinook/CKPUG.cfm). Plans exist for prototype tidal turbines to be deployed into their habitat. Noise is known to affect fish in many ways, such as causing a threshold shift in auditory sensitivity or tissue damage. The characteristics of noise, its spectra and level, are important factors that influence the potential for the noise to injure fish. For example, the frequency range of the tidal turbine noise includes the audiogram (frequency range of hearing) of most fish. This study (Effects on Aquatic Organisms, Subtask 2.1.3.2: Acoustics) was performed during FY 2011 to determine if noise generated by a 6-m-diameter open-hydro turbine might affect juvenile Chinook salmon hearing or cause barotrauma. After they were exposed to simulated tidal turbine noise, the hearing of juvenile Chinook salmon was measured and necropsies performed to check for tissue damage. Experimental groups were (1) noise exposed, (2) control (the same handling as treatment fish but without exposure to tidal turbine noise), and (3) baseline (never handled). Preliminary results indicate that low levels of tissue damage may have occurred but that there were no effects of noise exposure on the auditory systems of the test fish.

Halvorsen, Michele B.; Carlson, Thomas J.; Copping, Andrea E.

2011-09-30T23:59:59.000Z

184

E-Print Network 3.0 - ambiental em areas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for: ambiental em areas Page: << < 1 2 3 4 5 > >> 1 DYNAMIC AND LOCAL TYPING FOR MOBILE AMBIENTS Summary: DYNAMIC AND LOCAL TYPING FOR MOBILE AMBIENTS Mario Coppo1 ,...

185

E-Print Network 3.0 - ambient condition effects Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

P b in a:P : P... Secure Safe Ambients Michele Bugliesi Universita "Ca' Foscari", Venice michele... Ambients (SSA) are a typed variant of Safe Ambients 9, whose type...

186

E-Print Network 3.0 - ambient sound measurements Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary of CHI '98, April 18-23, 1998, 1998 ACM 1 ambientROOM: Integrating Ambient Media Summary: of the weather outside from ambient cues such as light, temperature, sound,...

187

Reliability of electrochemical noise measurements: results of round-robin testing on electrochemical noise  

E-Print Network [OSTI]

1 Reliability of electrochemical noise measurements: results of round-robin testing on electrochemical noise Rik-Wouter BOSCHa , Robert A. COTTISb,* , Kinga CSECSc , Thomas DORSCHc , Lucia DUNBARd), Switzerland; p) University of Cadiz, Spain. Abstract Sixteen laboratories have performed electrochemical noise

188

Immersive virtual reality and environmental noise assessment: An innovative audio–visual approach  

SciTech Connect (OSTI)

Several international studies have shown that traffic noise has a negative impact on people's health and that people's annoyance does not depend only on noise energetic levels, but rather on multi-perceptual factors. The combination of virtual reality technology and audio rendering techniques allow us to experiment a new approach for environmental noise assessment that can help to investigate in advance the potential negative effects of noise associated with a specific project and that in turn can help designers to make educated decisions. In the present study, the audio–visual impact of a new motorway project on people has been assessed by means of immersive virtual reality technology. In particular, participants were exposed to 3D reconstructions of an actual landscape without the projected motorway (ante operam condition), and of the same landscape with the projected motorway (post operam condition). Furthermore, individuals' reactions to noise were assessed by means of objective cognitive measures (short term verbal memory and executive functions) and subjective evaluations (noise and visual annoyance). Overall, the results showed that the introduction of a projected motorway in the environment can have immediate detrimental effects of people's well-being depending on the distance from the noise source. In particular, noise due to the new infrastructure seems to exert a negative influence on short term verbal memory and to increase both visual and noise annoyance. The theoretical and practical implications of these findings are discussed. -- Highlights: ? Impact of traffic noise on people's well-being depends on multi-perceptual factors. ? A multisensory virtual reality technology is used to simulate a projected motorway. ? Effects on short-term memory and auditory and visual subjective annoyance were found. ? The closer the distance from the motorway the stronger was the effect. ? Multisensory virtual reality methodologies can be used to study environmental impact.

Ruotolo, Francesco, E-mail: francesco.ruotolo@unina2.it [Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy)] [Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy); Maffei, Luigi, E-mail: luigi.maffei@unina2.it [Department of Architecture and Industrial Design, Second University of Naples, Abazia di S. Lorenzo, 81031, Aversa (Italy)] [Department of Architecture and Industrial Design, Second University of Naples, Abazia di S. Lorenzo, 81031, Aversa (Italy); Di Gabriele, Maria, E-mail: maria.digabriele@unina2.it [Department of Architecture and Industrial Design, Second University of Naples, Abazia di S. Lorenzo, 81031, Aversa (Italy); Iachini, Tina, E-mail: santa.iachini@unina2.it [Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy)] [Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy); Masullo, Massimiliano, E-mail: massimiliano.masullo@unina2.it [Department of Architecture and Industrial Design, Second University of Naples, Abazia di S. Lorenzo, 81031, Aversa (Italy)] [Department of Architecture and Industrial Design, Second University of Naples, Abazia di S. Lorenzo, 81031, Aversa (Italy); Ruggiero, Gennaro, E-mail: gennaro.ruggiero@unina2.it [Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy)] [Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy); Senese, Vincenzo Paolo, E-mail: vincenzopaolo.senese@unina2.it [Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy); Psychometric Laboratory, Department of Psychology, Second University of Naples, Viale Ellittico, 31, 81100, Caserta (Italy)

2013-07-15T23:59:59.000Z

189

Fighting dephasing noise with robust optimal control  

E-Print Network [OSTI]

We address the experimentally relevant problem of robust mitigation of dephasing noise acting on a qubit. We first present an extension of a method for representing $1/\\omega^{\\alpha}$ noise developed by Kuopanportti et al. to the efficient representation of arbitrary Markovian noise. We then add qubit control pulses to enable the design of numerically optimized, two-dimensional control functions with bounded amplitude, that are capable of decoupling the qubit from the dephasing effects of a broad variety of Markovian noise spectral densities during arbitrary one qubit quantum operations. We illustrate the method with development of numerically optimized control pulse sequences that minimize decoherence due to a combination of $1/\\omega$ and constant offset noise sources. Comparison with the performance of standard dynamical decoupling protocols shows that the numerically optimized pulse sequences are considerably more robust with respect to the noise offset, rendering them attractive for application to situations where homogeneous dephasing noise sources are accompanied by some extent of heterogeneous dephasing. Application to the mitigation of dephasing noise on spin qubits in silicon indicates that high fidelity single qubit gates are possible with current pulse generation technology.

Kevin C. Young; Dylan J Gorman; K. Birgitta Whaley

2010-05-28T23:59:59.000Z

190

Intelligibility enhancement of synthetic speech in noise  

E-Print Network [OSTI]

Intelligibility enhancement of synthetic speech in noise C´assia Valentini Botinh~ao TH E U N I V E of a hidden Markov model (HMM-) based speech synthesis system that allows for flexible enhancement strategies with noise-independent enhancement approaches based on the acoustics of highly intelligible speech

Edinburgh, University of

191

E-Print Network 3.0 - ambiental dos recursos Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Information Sciences 17 MAESTRA EN DESARROLLO Y AMBIENTE Objetivo del programa Summary: recursos naturales renovables 3 Poltica y legislacin ambiental 3 Fundamentos de...

192

E-Print Network 3.0 - analise ambiental da Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mathematics 7 Analise Matematica IV Licenciaturas: Eng. Ambiente, Eng. Biologica, Eng. Quimica, Quimica Summary: Analise Matematica IV Licenciaturas: Eng. Ambiente, Eng....

193

E-Print Network 3.0 - ambiental da regiao Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sciences 57 Analise Matematica IV Licenciaturas: Eng. Ambiente, Eng. Biologica, Eng. Quimica, Quimica Summary: Analise Matematica IV Licenciaturas: Eng. Ambiente, Eng....

194

E-Print Network 3.0 - ambiental da transpetro Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Catarina Collection: Environmental Sciences and Ecology 19 Prcticas de Evaluacin del Impacto Ambiental Revisin de Estudios de Impacto Ambiental Summary: Prcticas de...

195

E-Print Network 3.0 - ambiental para faixas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tome-se, por exemplo, um estudo de preservao ambiental em... desmoronamento e impacto ambiental. Para tanto, ... Source: Camara, Gilberto - Instituto Nacional de...

196

E-Print Network 3.0 - agua medio ambiente Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Ecology ; Biology and Medicine 23 Manuel Garca Snchez-Colomer -1 Evaluacin del impacto ambiental Summary: Evaluacin del impacto ambiental Temas 12 - 13 Numero medio de...

197

E-Print Network 3.0 - ambiental caso cundinamarca Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ADMINISTRATIVO DE LA Summary: 11 CASO: ESTACIN DESALADORA DE AGUA DE MAR Impacto Ambiental de Proyectos (Real Decreto... ;CursodeEvaluacindeImpactoAmbiental 12...

198

E-Print Network 3.0 - ambiental como herramienta Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: responsabilidad especial como agente de cambio hacia una reduccin del impacto ambiental de las actividades... los sistemas de certificacin ambiental como...

199

E-Print Network 3.0 - ambiental interior bienestar Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

en Argentina Summary: Expansin de la Frontera Agropecuaria en Argentina y su Impacto Ecolgico-Ambiental Editores... Ecolgico-Ambiental Captulo 12 Una mirada...

200

E-Print Network 3.0 - ambiental para las Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Texas A&M University Collection: Biology and Medicine 6 Prcticas de Evaluacin del Impacto Ambiental Revisin de Estudios de Impacto Ambiental Summary: especifican las...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

E-Print Network 3.0 - ambiente una alternativa Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Evaluacin Ambiental, con fecha 11 de abril de 2000, una propuesta de... Declaracin de Impacto Ambiental. El trazado de las tres alternativas propuestas difiere en la provincia...

202

E-Print Network 3.0 - al medio ambiente Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Medicine ; Computer Technologies and Information Sciences 9 Prcticas de Evaluacin del Impacto Ambiental Revisin de Estudios de Impacto Ambiental Summary: Prcticas de...

203

E-Print Network 3.0 - ambiental por compostos Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ANLISE DE COMPONENTES PRINCIPAIS COMO FERRAMENTA PARA A INVESTIGAO DE CONTAMINAO Summary: impacto ambiental destes compostos em ambientes contaminados por descarga de petrleo ou...

204

E-Print Network 3.0 - ambiente protegido em Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Technologies and Information Sciences 16 Manuel Garca Snchez-Colomer -1 Evaluacin del impacto ambiental Summary: ambiental Temas 12 - 13 Medio bitico: Espacios naturales...

205

E-Print Network 3.0 - ambiental integrada em Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(APAs). 12;Geoprocessamento em Projetos Ambientais10-2 Os projetos de avaliao de impacto ambiental... exemplo de estudo ambiental que combina as variveis ... Source:...

206

E-Print Network 3.0 - ambiental pre-operacional da Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Catarina Collection: Environmental Sciences and Ecology 16 Prcticas de Evaluacin del Impacto Ambiental Revisin de Estudios de Impacto Ambiental Summary: Prcticas de...

207

E-Print Network 3.0 - ambient field magnitude Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Lightning Research Group Collection: Engineering 43 Prcticas de Evaluacin del Impacto Ambiental Revisin de Estudios de Impacto Ambiental Summary: Prcticas de...

208

E-Print Network 3.0 - ambiental para empresas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Los... los sistemas de certificacin ambiental como instrumentos para reducir el impacto ambiental de las... para alcanzar los mercados verdes. TEMA 6. El ecodiseo. TEMA...

209

E-Print Network 3.0 - ambiental em escala Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(APAs). 12;Geoprocessamento em Projetos Ambientais10-2 Os projetos de avaliao de impacto ambiental... viso integrada da questo ambiental em conjunto com ... Source:...

210

E-Print Network 3.0 - ambiente controlado para Sample Search...  

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y su realizacin. 9 La Secretara de Medio Ambiente, Recursos Naturales y Pesca... PEMEX y con la colaboracin de la Agencia para la Proteccin Ambiental (EPA, por sus...

211

E-Print Network 3.0 - ambient particulate matter Sample Search...  

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ambient particulate matter Page: << < 1 2 3 4 5 > >> 1 Statistical Issues in the Study of Air Pollution Involving Airborne Particulate Matter Summary: Ambient Air Quality Standards...

212

E-Print Network 3.0 - ambient air exposures Sample Search Results  

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source-specific population exposure to ambient urban air... -specific exposure to ambient air pollution for an entire urbanpopulation at a fine geographical scale. Byarea, total......

213

E-Print Network 3.0 - ambient air toxics Sample Search Results  

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Indicators Project; CDC, NCEH, EHHE; January 2006 7 Summary: pollutants in ambient air Hazardous or toxic substances released in ambient air Residence in non... Indicators...

214

E-Print Network 3.0 - ambient high temperature Sample Search...  

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extensively support adapt- ability, which is highly demanded property in ambient-aware systems. - Fractal CBCM... Ambient-Oriented Programming in Fractal Ales Plsek, Philippe Merle...

215

Ambient Lighting Interventions REDUCE Negative Behaviors by 83% &  

E-Print Network [OSTI]

Ambient Lighting Interventions REDUCE Negative Behaviors by 83% & INCREASE Positive Behaviors by 90 & the structural organization & physiological actions of the brain. LIGHTING is known to influence production behaviors in patients with dementia & related disorders. Quality of light in interior environments

California at Davis, University of

216

Street media : ambient messages in an urban space  

E-Print Network [OSTI]

Ambient street media are the media of our everyday lives in cities. Manifested in bits and fragments on the surfaces of the streetscape, these media often escape our notice - tuned out as visual clutter or dismissed as ...

Murthy, Rekha (Rekha S.)

2005-01-01T23:59:59.000Z

217

Interoperable Semantic & Syntactic Service Matching for Ambient Computing Environments  

E-Print Network [OSTI]

. For service discovery protocols (SDP), one of the main functions of service-oriented architectures (SOA this purpose, the Service- Oriented Architecture (SOA) computing paradigm is particularly appropriate environments. Keywords: Service-oriented ambient computing, service discovery, matching and ranking

Paris-Sud XI, Université de

218

Analise Matematica IV Eng. Ambiente, Eng. Biologica, Eng. Quimica, Quimica  

E-Print Network [OSTI]

An´alise Matem´atica IV Eng. Ambiente, Eng. Biol´ogica, Eng. Qu´imica, Qu´imica 1o ¯ Semestre -- 31

Dias, Esmeralda Sousa

219

Analise Matematica IV Eng. Ambiente, Eng. Biologica, Eng. Quimica, Quimica  

E-Print Network [OSTI]

An´alise Matem´atica IV Eng. Ambiente, Eng. Biol´ogica, Eng. Qu´imica, Qu´imica 1o ¯ Semestre -- 27

Dias, Esmeralda Sousa

220

Analise Matematica IV Eng. Ambiente, Eng. Biologica, Eng. Quimica, Quimica  

E-Print Network [OSTI]

An´alise Matem´atica IV Eng. Ambiente, Eng. Biol´ogica, Eng. Qu´imica, Qu´imica 2o ¯ Semestre -- 28

Dias, Esmeralda Sousa

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Analise Matematica IV Eng. Ambiente, Eng. Biologica, Eng. Quimica, Quimica  

E-Print Network [OSTI]

An´alise Matem´atica IV Eng. Ambiente, Eng. Biol´ogica, Eng. Qu´imica, Qu´imica 1o ¯ Semestre -- 6

Dias, Esmeralda Sousa

222

ambiente urbano ed: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

el auge de la construc- cin de viviendas de inters social se produjera el menor impacto ambiental y social posible. De los terrenos se valor su ubicacin en el...

223

ambiental da celula: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

224

PREPARATIVOS EN MARCHA PARA LA CONFERENCIA SOBRE JUSTICIA AMBIENTAL...  

Energy Savers [EERE]

NACIONAL Y EL PROGRAMA DE CAPACITACIN 2014 La conferencia regresa a D.C. del 26 al 28 de marzo de 2014 con la celebracin de los 20 aos de justicia ambiental pasados y...

225

Arctic ocean long-term acoustic monitoring : ambient noise, environmental correlates, and transients north of Barrow, Alaska  

E-Print Network [OSTI]

the entire data set. The LTSA provides a time series ofzoom in” on an event in the LTSA and view its spectrogram -

Roth, Ethan H.

2008-01-01T23:59:59.000Z

226

Correlation time of ocean ambient noise intensity in San Diego Bay and target recognition in acoustic daylight images  

E-Print Network [OSTI]

Intensity Data Chapter 3 Acoustic Daylight Image TargetC. L. Epifanio. Acoustic Daylight: Passive Acoustic ImagingRecognition in Acoustic Daylight Images A Thesis submitted

Wadsworth, Adam J.

2010-01-01T23:59:59.000Z

227

GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS, VOL. ???, XXXX, DOI:10.1029/, The influence of non-uniform ambient noise on1  

E-Print Network [OSTI]

, Institute of Geophysics, ETH Zurich, Sonneggstrasse 5, Zurich, Switzerland. T. Nissen-Meyer, Institute of Geophysics, ETH Zurich, Sonneggstrasse 5, Zurich, Switzerland. Olaf Schenk, Institute of Computational of Geophysics, ETH Zurich, Sonneggstrasse 5, Zurich, Switzerland. 3 ISTEP, UMR 7193, UPMC Universite Paris 6

Paris-Sud XI, Université de

228

Arctic ocean long-term acoustic monitoring : ambient noise, environmental correlates, and transients north of Barrow, Alaska  

E-Print Network [OSTI]

Ocean – namely the thickness and concentration of perennial ice coverage – is crucial in allowing the water column to retain thermal energy

Roth, Ethan H.

2008-01-01T23:59:59.000Z

229

Noise vs computational intractability in dynamics  

E-Print Network [OSTI]

Computation plays a key role in predicting and analyzing natural phenomena. There are two fundamental barriers to our ability to computationally understand the long-term behavior of a dynamical system that describes a natural process. The first one is unaccounted-for errors, which may make the system unpredictable beyond a very limited time horizon. This is especially true for chaotic systems, where a small change in the initial conditions may cause a dramatic shift in the trajectories. The second one is Turing-completeness. By the undecidability of the Halting Problem, the long-term prospects of a system that can simulate a Turing Machine cannot be determined computationally. We investigate the interplay between these two forces -- unaccounted-for errors and Turing-completeness. We show that the introduction of even a small amount of noise into a dynamical system is sufficient to "destroy" Turing-completeness, and to make the system's long-term behavior computationally predictable. On a more technical level,...

Braverman, Mark; Rojas, Cristobal

2012-01-01T23:59:59.000Z

230

Assessing the Impacts of Reduced Noise Operations of Wind Turbines on Neighbor Annoyance: A Preliminary Analysis in Vinalhaven, Maine  

E-Print Network [OSTI]

only self-reported wind and turbine sound levels were used.Noise Operations of Wind Turbines on Neighbor Annoyance: ANoise Operations of Wind Turbines on Neighbor Annoyance: A

Hoen, Ben

2010-01-01T23:59:59.000Z

231

The efficiency of environmental impact assessments relating to noise issues  

E-Print Network [OSTI]

The efficiency of environmental impact assessments relating to noise issues Z. Krukle University of environmental impact assessments (EIA) relating to noise issues. The goal is attained through evaluation, effectiveness, environmental impact assessment, noise 1 Introduction Environmental impact assessment (EIA

Paris-Sud XI, Université de

232

Low noise charge ramp electrometer  

DOE Patents [OSTI]

An electrometer capable of measuring small currents without the use of a feedback resistor which tends to contribute a large noise factor to the measured data. The electrometer eliminates the feedback resistor through the use of a feedback capacitor located across the electrometer amplifier. The signal from the electrometer amplifier is transferred to a electrometer buffer amplifier which serves to transfer the signal to several receptors. If the electrometer amplifier is approaching saturation, the buffer amplifier signals a reset discriminator which energizes a coil whose magnetic field closes a magnetic relay switch which in turn resets or zeros the feedback capacitor. In turn, a reset complete discriminator restarts the measurement process when the electrometer amplifier approaches its initial condition. The buffer amplifier also transmits the voltage signal from the electrometer amplifier to a voltage-to-frequency converter. The signals from the voltage-to-frequency converter are counted over a fixed period of time and the information is relayed to a data processor. The timing and sequencing of the small current measuring system is under the control of a sequence control logic unit.

Morgan, John P. (Idaho Falls, ID); Piper, Thomas C. (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

233

Low noise charge ramp electrometer  

DOE Patents [OSTI]

An electrometer capable of measuring small currents without the use of a feedback resistor which tends to contribute a large noise factor to the measured data. The electrometer eliminates the feedback resistor through the use of a feedback capacitor located across the electrometer amplifier. The signal from the electrometer amplifier is transferred to a electrometer buffer amplifier which serves to transfer the signal to several receptors. If the electrometer amplifier is approaching saturation, the buffer amplifier signals a reset discriminator which energizes a coil whose magnetic field closes a magnetic relay switch which in turn resets or zeros the feedback capacitor. In turn, a reset complete discriminator restarts the measurement process when the electrometer amplifier approaches its initial condition. The buffer amplifier also transmits the voltage signal from the electrometer amplifier to a voltage-to-frequency converter. The signals from the voltage-to-frequency converter are counted over a fixed period of time and the information is relayed to a data processor. The timing and sequencing of the small current measuring system is under the control of a sequence control logic unit. 2 figs.

Morgan, J.P.; Piper, T.C.

1992-10-06T23:59:59.000Z

234

Device-independent quantum reading and noise-assisted quantum transmitters  

E-Print Network [OSTI]

In quantum reading, a quantum state of light (transmitter) is applied to read classical information. In the presence of noise or for sufficiently weak signals, quantum reading can outperform classical reading by enhanced state distinguishability. Here we show that the enhanced quantum efficiency depends on the presence in the transmitter of a particular type of quantum correlations, the discord of response. Different encodings and transmitters give rise to different levels of efficiency. Considering noisy quantum probes we show that squeezed thermal transmitters with non-symmetrically distributed noise among the field modes yield a higher quantum efficiency compared to coherent thermal quantum states. The noise-enhanced quantum advantage is a consequence of the discord of response being a non-decreasing function of increasing thermal noise under constant squeezing, a behavior that leads to an increased state distinguishability. We finally show that, for non-symmetric squeezed thermal states, the probability of error, as measured by the quantum Chernoff bound, vanishes asymptotically with increasing local thermal noise at finite global squeezing. Therefore, at fixed finite squeezing, noisy but strongly discordant quantum states with large noise imbalance between the field modes can outperform noisy classical resources as well as pure entangled transmitters with the same finite level of squeezing.

Wojciech Roga; Daniela Buono; Fabrizio Illuminati

2014-12-22T23:59:59.000Z

235

Noise-based communication and computing  

E-Print Network [OSTI]

We discuss the speed-error-heat triangle and related problems with rapidly increasing energy dissipation and error rate during miniaturization. These and the independently growing need of unconditional data security have provoked non-conventional approaches in the physics of informatics. Noise-based informatics is a potentially promising possibility which is the way how biological brains process the information. Recently, it has been shown that thermal noise and its electronically enhanced versions (Johnson-like noises) can be utilized as information carrier with peculiar properties. Relevant examples are Zero power (stealth) communication, Unconditionally secure communication with Johnson(-like) noise and Kirchhoff loop and Noise-driven computing. The zero power communication utilizes the equilibrium background noise in the channel to transfer information. The unconditionally secure communication is based on the properties of Johnson(-like) noise and those of a simple Kirchhoff's loop. The scheme utilizes on the robustness of classical information and the second law of thermodynamics. It uncovers active eavesdropping within a single clock period (no error statistics is required) and it is naturally protected against the man-in-the-middle attack. Further advantages of the scheme is that the circuitry can easily be integrated on computer chips, unconditionally secure computer processors, memories and other hardware can be realized.

Laszlo B. Kish

2008-08-19T23:59:59.000Z

236

Noise properties of gravitational lens mass reconstruction  

E-Print Network [OSTI]

Gravitational lensing is potentially able to observe mass-selected halos, and to measure the projected cluster mass function. An optimal mass-selection requires a quantitative understanding of the noise behavior in mass maps. This paper is an analysis of the noise properties in mass maps reconstructed using a maximum likelihood method. The noise power spectrum and the mass error bars are derived as a straightforward extension of the Kaiser & Squires (1993) algorithm to the case of a correlated noise. A very good agreement is found between these calculations and the noise properties observed in maximum likelihood mass reconstructions limited to simulated non-critical clusters of galaxies. In a second part, I show that the statistic of peaks in the noise follows accurately the peak statistics of a two-dimensional Gaussian random field (using the BBKS technics) if the smoothing aperture contains enough galaxies. This analysis provides a procedure to derive the significance of any mass peak as a function of its amplitude and its profile. It is demonstrated that, to a very good approximation, a mass map is the sum of the lensing signal plus a 2D gaussian random noise, which means that a detailled quantitative analysis of the structures in mass maps can be done. A direct application is the measurement of the projected mass function in wide field lensing surveys, down to small mass halos which are individually undetectable, this is the subject of a forthcoming work.

L. Van Waerbeke

1999-09-09T23:59:59.000Z

237

Radio Frequency Noise Effects on the CERN Large Hadron Collider Beam Diffusion  

SciTech Connect (OSTI)

Radio frequency (rf) accelerating system noise can have a detrimental impact on the Large Hadron Collider (LHC) performance through longitudinal motion and longitudinal emittance growth. A theoretical formalism has been developed to relate the beam and rf station dynamics with the bunch length growth. Measurements were conducted at LHC to determine the performance limiting rf components and validate the formalism through studies of the beam diffusion dependence on rf noise. As a result, a noise threshold was established for acceptable performance which provides the foundation for beam diffusion estimates for higher energies and intensities. Measurements were also conducted to determine the low level rf noise spectrum and its major contributions, as well as to validate models and simulations of this system.

Mastoridis, T.; Baudrenghien, P.; Butterworth, A.; Molendijk, J.; /CERN; Rivetta, C.; Fox, J.D.; /SLAC

2012-04-30T23:59:59.000Z

238

Application of Noise Cancelling and Damage Detection Algorithms in NDE of Concrete Bridge Decks Using Impact Signals  

SciTech Connect (OSTI)

Delamination is a commonly observed distress in concrete bridge decks. Among all the delamination detection methods, acoustic methods have the advantages of being fast and inexpensive. In traditional acoustic inspection methods, the inspector drags a chain along or hammers on the bridge deck and detects delamination from the 'hollowness' of the sounds. The signals are often contaminated by ambient traffic noise and the detection of delamination is highly subjective. This paper describes the performance of an impact-bases acoustic NDE method where the traffic noise was filtered by employing a noise cancelling algorithm and where subjectivity was eliminated by introducing feature extraction and pattern recognition algorithms. Different algorithms were compared and the best one was selected in each category. The comparison showed that the modified independent component analysis (ICA) algorithm was most effective in cancelling the traffic noise and features consisting of mel-frequency cepstral coefficients (MFCCs) had the best performance in terms of repeatability and separabillty. The condition of the bridge deck was then detected by a radial basis function (RBF) neural network. The performance of the system was evaluated using both experimental and field data. The results show that the selected algorithms increase the noise robustness of acoustic methods and perform satisfactorily if the training data is representative.

Zhang, Gang; Harichandran, Ronald S.; Ramuhalli, Pradeep

2011-09-13T23:59:59.000Z

239

Low-noise macroscopic twin beams  

E-Print Network [OSTI]

Applying a multiphoton-subtraction technique to two-color macroscopic squeezed vacuum state of light generated via high-gain parametric down conversion we conditionally prepare a new state of light: bright multi-mode low-noise twin beams. The obtained results demonstrate up to 8-fold suppression of noise in each beam while preserving and even moderately improving the nonclassical photon number correlations between the beams. The prepared low-noise macroscopic state, containing up to 2000 photons per mode, is not among the states achievable through nonlinear optical processes. The proposed technique substantially improves the usefulness of twin beams for quantum technologies.

Timur Sh. Iskhakov; Vladyslav C. Usenko; Radim Filip; Maria V. Chekhova; Gerd Leuchs

2014-08-27T23:59:59.000Z

240

airborne noise emitted: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The light intensity noise was measured as a function of wavelength within the light emitting diode spectral emission line. The spectral noise density is found to increase Wetzel,...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

active noise control: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

significant noise ... Hong, Seung Hyuck 2009-01-01 2 Design of an Active Noise Control System using Plasma Actuators Engineering Websites Summary: and analysed from sensors located...

242

A programmable analog Gaussian noise generator for test applications.  

E-Print Network [OSTI]

??This thesis presents a robust programmable analog Gaussian noise generator suitable for mixed-signal test applications. Unlike conventional methods, noise generators employing a linear feedback shift… (more)

Aouini, Sadok.

2006-01-01T23:59:59.000Z

243

E-Print Network 3.0 - ambient air pollution Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

pollution Search Powered by Explorit Topic List Advanced Search Sample search results for: ambient air pollution...

244

Noise and synamics in semiconductor lasers  

E-Print Network [OSTI]

In this thesis, theoretical and experimental work on the noise and dynamics in continuous wave and mode-locked semiconductor lasers is presented. The main focus is on semiconductor cascade lasers and semiconductor mode-locked ...

Rana, Farhan, 1971-

2003-01-01T23:59:59.000Z

245

Regression of Environmental Noise in LIGO Data  

E-Print Network [OSTI]

We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promising regression method is based on the construction of Wiener-Kolmogorov filters. Using this method, the seismic noise cancellation from the LIGO GW channel has already been performed. In the presented approach the Wiener-Kolmogorov method has been extended, incorporating banks of Wiener filters in the time-frequency domain, multi-channel analysis and regulation schemes, which greatly enhance the versatility of the regression analysis. Also we presents the first results on regression of the bi-coherent noise in the LIGO data.

Tiwari, Vaibhav; Frolov, Valery; Klimenko, Sergey; Mitselmakher, Guenakh; Necula, Valentin; Prodi, Giovanni; Re, Virginia; Salemi, Francesco; Vedovato, Gabriele; Yakushin, Igor

2015-01-01T23:59:59.000Z

246

Entangled quantum probes for dynamical environmental noise  

E-Print Network [OSTI]

We address the use of entangled qubits as quantum probes to characterize the dynamical noise induced by complex environments. In particular, we show that entangled probes improve estimation of the correlation time for a broad class of environmental noises compared to any sequential strategy involving single qubit preparation. The effect is present when the noise is faster than a threshold value, a regime which may always be achieved by tuning the coupling between the quantum probe and the environment inducing the noise. Our scheme exploits time-dependent sensitivity of quantum systems to decoherence and does not require dynamical control on the probes. We derive the optimal interaction time and the optimal probe preparation, showing that it corresponds to multiqubit GHZ states when entanglement is useful. We also show robustness of the scheme against depolarization or dephasing of the probe, and discuss simple measurements approaching optimal precision.

Matteo A. C. Rossi; Matteo G. A. Paris

2015-03-11T23:59:59.000Z

247

Regression of Environmental Noise in LIGO Data  

E-Print Network [OSTI]

We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promising regression method is based on the construction of Wiener-Kolmogorov filters. Using this method, the seismic noise cancellation from the LIGO GW channel has already been performed. In the presented approach the Wiener-Kolmogorov method has been extended, incorporating banks of Wiener filters in the time-frequency domain, multi-channel analysis and regulation schemes, which greatly enhance the versatility of the regression analysis. Also we presents the first results on regression of the bi-coherent noise in the LIGO data.

Vaibhav Tiwari; Marco Drago; Valery Frolov; Sergey Klimenko; Guenakh Mitselmakher; Valentin Necula; Giovanni Prodi; Virginia Re; Francesco Salemi; Gabriele Vedovato; Igor Yakushin

2015-03-25T23:59:59.000Z

248

Dissipation, noise and DCC domain formation  

E-Print Network [OSTI]

We investigate the effect of friction on domain formation in disoriented chiral condensate. We solve the equation of motion of the linear sigma model, in the Hartree approximation, including a friction and a white noise term. For quenched initial condition, we find that even in presence of noise and dissipation domain like structure emerges after a few fermi of evolution. Domain size as large as 5 fm can be formed.

A. K. Chaudhuri

1999-08-17T23:59:59.000Z

249

Effect of noise on the standard mapping  

SciTech Connect (OSTI)

The effect of a small amount of noise on the standard mapping is considered. Whenever the standard mapping possesses accelerator models (where the action increases approximately linearly with time), the diffusion coefficient contains a term proportional to the reciprocal of the variance of the noise term. At large values of the stochasticity parameter, the accelerator modes exhibit a universal behavior. As a result the dependence of the diffusion coefficient on stochasticity parameter also shows some universal behavior.

Karney, C.F.F.; Rechester, A.B.; White, R.B.

1981-03-01T23:59:59.000Z

250

Excess optical quantum noise in atomic sensors  

E-Print Network [OSTI]

Enhanced nonlinear optical response of a coherent atomic medium is the basis for many atomic sensors, and their performance is ultimately limited by the quantum fluctuations of the optical read-out. Here we demonstrate that off-resonant interactions can significantly modify the quantum noise of the optical field, even when their effect on the mean signal is negligible. We illustrate this concept by using an atomic magnetometer based on the nonlinear Faraday effect: the rotation of the light polarization is mainly determined by the resonant light-induced spin alignment, which alone does not change the photon statistics of the optical probe. Yet, we found that the minimum noise of output polarization rotation measurements is above the expected shot noise limit. This excess quantum noise is due to off-resonant coupling and grows with atomic density. We also show that the detection scheme can be modified to reduce the measured quantum noise (even below the shot-noise limit) but only at the expense of the reduced rotational sensitivity. These results show the existence of previously unnoticed factors in fundamental limitations in atomic magnetometry and could have impacts in many other atom-light based precision measurements.

Irina Novikova; Eugeniy E. Mikhailov; Yanhong Xiao

2014-10-14T23:59:59.000Z

251

Realizing strong light-matter interactions between single nanoparticle plasmons and molecular excitons at ambient conditions  

E-Print Network [OSTI]

Realizing strong light-matter interactions between individual 2-level systems and resonating cavities in atomic and solid state systems opens up possibilities to study optical nonlinearities on a single photon level, which can be useful for future quantum information processing networks. However, these efforts have been hampered by the unfavorable experimental conditions, such as cryogenic temperatures and ultrahigh vacuum, required to study such systems and phenomena. Although several attempts to realize strong light-matter interactions at room-temperature using so-called plasmon resonances have been made, successful realizations on the single nanoparticle level are still lacking. Here, we demonstrate strong coupling between plasmons confined within a single silver nanoprism and excitons in molecular J-aggregates at ambient conditions. Our findings show that the deep subwavelength mode volumes, $V$, together with high quality factors, $Q$, associated with plasmons in the nanoprisms result in strong coupling ...

Zengin, Gülis; Nilsson, Sara; Antosiewicz, Tomasz J; Käll, Mikael; Shegai, Timur

2015-01-01T23:59:59.000Z

252

PROGRAMA DE MAESTRA Y DOCTORADO EN INGENIERA Subcomit Acadmico por Campo del Conocimiento en Ingeniera Ambiental  

E-Print Network [OSTI]

. Georgina Fernández Villagómez U1-01 1 Evaluación de impacto ambiental U1-06 3 Contaminación Ambiental 2 U1 Ingeniería Ambiental LISTA DE ASIGNATURAS QUE OFRECE EL CAMPO DEL CONOCIMIENTO EN INGENIERIA AMBIENTAL-02 2 Contaminación Ambiental 2 E-203 #12;TEMAS SELECTOS DE AGUA No. Nombre de la Asignatura Profesor

Islas, León

253

Ambient Radon-222 Monitoring in Amargosa Valley, Nevada  

SciTech Connect (OSTI)

As part of a program to characterize and baseline selected environmental parameters in the region around the proposed repository at Yucca Mountain, Nevada, ambient radon-222 monitoring was conducted in the rural community of Amargosa Valley, the community closest to the proposed repository site. Passive integrating radon monitors and a continuous radon monitoring instrument were deployed adjacent to the Community Environmental Monitoring Program (CEMP) (http://www.cemp.dri.edu/index.html) station located in the Amargosa Valley Community Center near the library. The CEMP station provided real-time ambient gamma exposure and meteorological data used to correct the integrated radon measurements as well as verify meteorological data collected by the continuous radon monitoring instrument. Additionally, different types of environmental enclosures that housed the monitors and instrument were used to determine if particular designs influenced the ambient radon measurements.

L.H. Karr; J.J. Tappen; D. Shafer; K.J. Gray

2008-06-05T23:59:59.000Z

254

Empirical Study of Noise Dependence in Electrochemical Sensors  

E-Print Network [OSTI]

is temperature and frequency independent, in contrast to thermal noise, which is proportional to temperature, is a process with a frequency spectrum such that the power spectral density of the noise is proportional the effect of concentration and voltage on the noise Power Spectral Density (PSD) and the Signal over Noise

Candea, George

255

A Numerical Treatment of the Rf SQUID: I. General Properties andNoise Energy  

SciTech Connect (OSTI)

We investigate the characteristics and noise performance of rf Superconducting Quantum Interference Devices (SQUIDs) by solving the corresponding Langevin equations numerically and optimizing the model parameters with respect to noise energy. After introducing the basic concepts of the numerical simulations, we give a detailed discussion of the performance of the SQUID as a function of all relevant parameters. The best performance is obtained in the crossover region between the dispersive and dissipative regimes, characterized by an inductance parameter {beta}{prime}{sub L} {triple_bond} 2{pi}LI{sub 0}/{Phi}{sub 0} {approx} 1; L is the loop inductance, I{sub 0} the critical current of the Josephson junction, and {phi}{sub 0} the flux quantum. In this regime, which is not well explored by previous analytical approaches, the lowest (intrinsic) values of noise energy are a factor of about 2 above previous estimates based on analytical approaches. However, several other analytical predictions, such as the inverse proportionality of the noise energy on the tank circuit quality factor and the square of the coupling coefficient between the tank circuit and the SQUID loop, could not be well reproduced. The optimized intrinsic noise energy of the rf SQUID is superior to that of the dc SQUID at all temperatures. Although for technologically achievable parameters this advantage shrinks, particularly at low thermal fluctuation levels, we give an example for realistic parameters that leads to a noise energy comparable to that of the dc SQUID even in this regime.

Kleiner, Reinhold; Koelle, Dieter; Clarke, John

2007-01-15T23:59:59.000Z

256

Relating carrion breakdown rates to ambient resource level and community structure in four cave stream ecosystems  

E-Print Network [OSTI]

into ecosystems vary in quantity and quality (e.g., plant litter vs carrion). Variability in detrital quantity and quality potentially affects consumer biomass and rates of organic matter (OM) breakdown. We used cave streams to test 2 linked hypotheses regarding the influence of total detrital inputs on consumer biomass

Benstead, Jon

257

IMPROVING INTELLIGIBILITY IN NOISE OF HMM-GENERATED SPEECH VIA NOISE-DEPENDENT AND -INDEPENDENT METHODS  

E-Print Network [OSTI]

the intelligibility of HMM-generated Text-to- Speech (TTS) in noise, this work evaluates several speech enhance- ment in noise. Accordingly, there is great interest in speech in- telligibility enhancement algorithms for both] and the insertion of small pauses [14]. Statistical approaches to speech enhancement using recordings of speech

Edinburgh, University of

258

Introduzione Matlab Carla Guerrini 1 Introduzione all'ambiente  

E-Print Network [OSTI]

1 Introduzione Matlab Carla Guerrini 1 Introduzione all'ambiente Matlab Introduzione Matlab Carla. Pareschi, Matlab concetti e progetti, Apogeo ed. · Tutorials e programmi disponibili in rete: http:// www.dti.supsi.ch/~bucher/matlab.pdf http://www.dm.unibo.it/ /~guerrini/html/matlab.html http:// www.dm.unibo.it/ /~guerrini

Guerrini, Carla

259

ambient vibration test: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

vibration test First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Ambient Vibration Tests and Modal...

260

Monitoria para FIS1012 Aspectos Fsicos para o Conforto Ambiental  

E-Print Network [OSTI]

Monitoria para FIS1012 Aspectos Físicos para o Conforto Ambiental (disciplina do currículo de das cartas de recomendação encontram-se em: http://www.fis.puc-rio.br/formularios.php os documentos podem ser entregues impressos na sala L 652 ou enviados eletronicamente para monitoria@fis.puc-rio.br Os

Lewiner, Thomas (Thomas Lewiner)

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Volatile Organic Compounds in Untreated Ambient Groundwater of  

E-Print Network [OSTI]

, 1608 Mt. View Road, Rapid City, South Dakota 57702 As part of the National Water-Quality Assessment from this ambient groundwater is uncertain because the quality of the finished drinking water with the largest releases to the environment are VOCs and that the total release for these 10 compounds was almost

262

Guia para a Avaliao do Risco Ambiental de Organismos  

E-Print Network [OSTI]

Paulo - ILSI Brasil 2012 #12;#12;Guia para a Avaliação do Risco Ambiental de Organismos Geneticamente Modificados #12;APOIO: © 2012 ILSI Brasil - International Life Sciences Institute do Brasil ILSI BRASIL INTERNATIONAL LIFE SCIENCES INSTITUTE DO BRASIL Rua Hungria, 664 - conj.113 01455-904 - São Paulo - SP - Brasil

Parrott, Wayne

263

Implications of CT noise and artifacts for quantitative {sup 99m}Tc SPECT/CT imaging  

SciTech Connect (OSTI)

Purpose: This paper evaluates the effects of computed tomography (CT) image noise and artifacts on quantitative single-photon emission computed-tomography (SPECT) imaging, with the aim of establishing an appropriate range of CT acquisition parameters for low-dose protocols with respect to accurate SPECT attenuation correction (AC). Methods: SPECT images of two geometric and one anthropomorphic phantom were reconstructed iteratively using CT scans acquired at a range of dose levels (CTDI{sub vol} = 0.4 to 46 mGy). Resultant SPECT image quality was evaluated by comparing mean signal, background noise, and artifacts to SPECT images reconstructed using the highest dose CT for AC. Noise injection was performed on linear-attenuation (?) maps to determine the CT noise threshold for accurate AC. Results: High levels of CT noise (? ? 200–400 HU) resulted in low ?-maps noise (? ? 1%–3%). Noise levels greater than ?10% in 140 keV ?-maps were required to produce visibly perceptible increases of ?15% in {sup 99m}Tc SPECT images. These noise levels would be achieved at low CT dose levels (CTDI{sub vol} = 4 ?Gy) that are over 2 orders of magnitude lower than the minimum dose for diagnostic CT scanners. CT noise could also lower (bias) the expected ? values. The relative error in reconstructed SPECT signal trended linearly with the relative shift in ?. SPECT signal was, on average, underestimated in regions corresponding with beam-hardening artifacts in CT images. Any process that has the potential to change the CT number of a region by ?100 HU (e.g., misregistration between CT images and SPECT images due to motion, the presence of contrast in CT images) could introduce errors in ?{sub 140} {sub keV} on the order of 10%, that in turn, could introduce errors on the order of ?10% into the reconstructed {sup 99m}Tc SPECT image. Conclusions: The impact of CT noise on SPECT noise was demonstrated to be negligible for clinically achievable CT parameters. Because CT dose levels that affect SPECT quantification is low (CTDI{sub vol} ? 4 ?Gy), the low dose limit for the CT exam as part of SPECT/CT will be guided by CT image quality requirements for anatomical localization and artifact reduction. A CT technique with higher kVp in combination with lower mAs is recommended when low-dose CT images are used for AC to minimize beam-hardening artifacts.

Hulme, K. W.; Kappadath, S. C., E-mail: skappadath@mdanderson.org [Department of Imaging Physics, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030 and The University of Texas Graduate School of Biomedical Sciences, Houston, Texas 77030 (United States)

2014-04-15T23:59:59.000Z

264

Underwater temporary threshold shift induced by octave-band noise in three species of pinniped  

E-Print Network [OSTI]

especially sensitive to acoustic overstimulation, given increasing levels of oceanic noise pollution intensity and duration is sufficient to induce TTS under water in these pinniped species. © 1999 Acoustical inter- act in complicated ways with these acoustic characteristics. Studies of TTS in nonhumans have

Reichmuth, Colleen

265

A Low Noise Active Integrated Antenna Receiver for Monopulse Radar Applications  

E-Print Network [OSTI]

radiation pattern suitable for monopulse radar applications. Simulation and measurement methodology- polarization levels has been demonstrated. An FMCW radar transceiver using a quasi-Yagi antenna array has beenA Low Noise Active Integrated Antenna Receiver for Monopulse Radar Applications Sylvia Lin, Yongxi

Itoh, Tatsuo

266

Amplitude Modulation Cues for Perceptual Voicing Distinctions in Noise Brian P. Stropc and Abeer A. Alwan  

E-Print Network [OSTI]

a turbulent noise-Iike source. With voiced fricatives, vibrating vocal folds introduce low-frequency energy at the first few har- monics of the fundamental frequency. Measurements using the relative level of the first is an envelope-statistic model, adopted from (5)(6), that uses a 3-kHz bandwidth filter, half-wave rectifica

Alwan, Abeer

267

Considerations of noise and performance on a secondary task for the use of compressed speech in a cockpit environment  

E-Print Network [OSTI]

Noise Comp x Subj(Noise x Order) 0. 0056 3 0. 0019 0. 17 Comp x Subj(Noise x Order) 0. 0093 3 0. 0031 0. 29 * significant at p 0. 0001 TABLE 8 ANOVA for Secondary Task Performance (Tracking Performance during Message) SOURCE Between Subjects... by performance on a secondary tracking task. Research participants listened to verbal messages and were required to write them down shortly afterwards. For each research part1ci pant this was done with each of four com- pression levels: 0, 17, 50, and 100...

Crittenden, Lorri June

1986-01-01T23:59:59.000Z

268

Evaluation of the SCR controller noise problem  

SciTech Connect (OSTI)

Several types of solid state controllers are available for application to electric vehicles. The silicon controlled rectifier (SCR) type provides a current waveform of fixed pulse height and variable ratio on to off time. The controller provides step-free operation through a four-speed manual transmission. However, because the current is chopped, the circuits produce loud hums of varying frequency, which in some mounting situations may be amplified. This noise disappoints those who expect an electric vehicle to boast relatively silent operation. To evaluate the problem, components of a test bed, consisting of a battery bank, dc motor, SCR controller, charger, and appropriate cabling, were fitted with accelerometers, and the noises were evaluated for amplitude and spectral characteristics. Transient currents and voltages were also measured and analyzed to identify the source of the noise and the frequencies involved.

Bassett, R R; Barnaby, B E

1981-12-01T23:59:59.000Z

269

Turbulence ingestion noise of open rotors  

E-Print Network [OSTI]

-Edge Interaction (TBL-TE) is a dominant noise source for wind turbines (Kamruzzaman et al., 2008), as well as being a subject of active research within aeroengine aeroacoustics (Pagano et al., 2009). Towards the trailing edge of a blade the boundary layer plays... , flight testing and calibration of methods. Hoff included a diagram which illustrated the many different propfan noise sources, see Figure 1.4. There was also a recognition that distortion is an important factor in predicting the acoustics of propeller...

Robison, Rosalyn Aruna Venner

2012-04-10T23:59:59.000Z

270

Causal Baryon Diffusion and Colored Noise  

E-Print Network [OSTI]

We construct a model of baryon diffusion which has the desired properties of causality and analyticity. The model also has the desired property of colored noise, meaning that the noise correlation function is not a Dirac delta function in space and time; rather, it depends on multiple time and length constants. The model can readily be incorporated in 3+1 dimensional second order viscous hydro-dynamical models of heavy ion collisions, which is particularly important at beam energies where the baryon density is large.

J. I. Kapusta; C. Young

2014-04-18T23:59:59.000Z

271

KdV Preserves White Noise  

E-Print Network [OSTI]

It is shown that white noise is an invariant measure for the Korteweg-deVries equation on $\\mathbb T$. This is a consequence of recent results of Kappeler and Topalov establishing the well-posedness of the equation on appropriate negative Sobolev spaces, together with a result of Cambronero and McKean that white noise is the image under the Miura transform (Ricatti map) of the (weighted) Gibbs measure for the modified KdV equation, proven to be invariant for that equation by Bourgain.

Jeremy Quastel; Benedek Valko

2006-11-06T23:59:59.000Z

272

Minimizing System Noise Effects For Extreme-Scale Scientific Simulation Through Function Delegation  

SciTech Connect (OSTI)

The primary goal of the Minimizing System Noise Effects For Extreme-Scale Scientific Simulation through Function Delegation project is to eliminate or at best strongly minimize the impact of the noise introduced by the operating system, during large scale parallel applications runs. Collective communication operations are a basic building block for parallel programing models and scientific applications. These operations often dominate execution time of applications and tend to limit their scalability. In order to address this challenge, we evaluated different strategies to adapt the collective communications underlying topologies to the hardware architecture in order to provide increased levels of performance to the parallel applications.

Dongarra, Jack J. [University of Tennessee, Knoxville; Bosilca, George [University of Tennessee, Knoxville

2013-06-11T23:59:59.000Z

273

Cardiopulmonary Toxicity Induced by Ambient Particulate Matter (BI City Concentrated Ambient Particle Study)  

SciTech Connect (OSTI)

Alterations in heart rate variability (HRV) have been reported in rodents exposed to concentrated ambient particles (CAPs) from different regions of the United States. The goal of this study was to compare alterations in cardiac function induced by CAPs in two distinct regional atmospheres. AirCARE 1, a mobile laboratory with an EPA/Harvard fine particle (particulate matter <2.5 {micro}m; PM{sub 2.5}) concentrator was located in urban Detroit, MI, where the PM mixture is heavily influenced by motor vehicles, and in Steubenville, OH, where PM is derived primarily from long-range transport and transformation of power plant emissions, as well as from local industrial operations. Each city was studied during both winter and summer months, for a total of four sampling periods. Spontaneously hypertensive rats instrumented for electrocardiogram (ECG) telemetry were exposed to CAPs 8 h/day for 13 consecutive days during each sampling period. Heart rate (HR), and indices of HRV (standard deviation of the average normal-to-normal intervals [SDNN]; square root of the mean squared difference of successive normal-to-normal intervals [rMSSD]), were calculated for 30-minute intervals during exposures. A large suite of PM components, including nitrate, sulfate, elemental and organic carbon, and trace elements, were monitored in CAPs and ambient air. In addition, a unique sampler, the Semi-Continuous Elements in Air Sampler (SEAS) was employed to obtain every-30-minute measurements of trace elements. Positive matrix factorization (PMF) methods were applied to estimate source contributions to PM{sub 2.5}. Mixed modeling techniques were employed to determine associations between pollutants/CAPs components and HR and HRV metrics. Mean CAPs concentrations in Detroit were 518 and 357 {micro}g/m{sup 3} (summer and winter, respectively) and 487 and 252 {micro}g/m{sup 3} in Steubenville. In Detroit, significant reductions in SDNN were observed in the summer in association with cement/lime, iron/steel, and gasoline/diesel factors, while associations with the sludge incineration factor and components were less consistent. In winter, increases in HR were associated with a refinery factor and its components. CAPs-associated HR decreases in winter were linked to sludge incineration, cement/lime, and coal/secondary factors and the majority of their associated components. Specific relationships for increased rMSSD in winter were difficult to determine due to lack of consistency between factors and associated constituents. In Steubenville, we observed significant changes in HR (both increases and decreases), SDNN, and rMSSD in the summer, but not in the winter. We examined associations between individual source factors/PM components and HRV metrics segregated by predominant wind direction (NE or SW). Changes in HR (both increases and decreases) were linked with metal processing, waste incineration, and iron/steel factors along with most of their associated elemental constituents. Reductions in SDNN were associated with metal processing, waste incineration, and mobile source factors and the majority of elements loading onto these factors. There were no consistent associations between changes in rMSSD and source factors/components. Despite the large number of coal-fired power plants in the region, and therefore the large contribution of secondary sulfate to overall PM mass, we did not observe any associations with the coal/secondary factor or with the majority of its associated components. There were several inconsistencies in our results which make definitive conclusions difficult. For example, we observed opposing signs of effect estimates with some components depending on season, and with others depending on wind direction. In addition, our extensive dataset clearly would be subject to issues of multiple comparisons, and the 'true' significant results are unknown. Overall, however, our results suggest that acute changes in cardiac function were most strongly associated with local industrial sources. Results for coal-fired power plant-derived PM were

Annette Rohr; James Wagner Masako Morishita; Gerald Keeler; Jack Harkema

2010-06-30T23:59:59.000Z

274

Loss and thermal noise in plasmonic waveguides  

SciTech Connect (OSTI)

Rytov's theory of thermally generated radiation is used to find the noise in two-dimensional passive guides based on an arbitrary distribution of lossy isotropic dielectric. To simplify calculations, the Maxwell curl equations are approximated using difference equations that also permit a transmission-line analogy, and material losses are assumed to be low enough for modal losses to be estimated using perturbation theory. It is shown that an effective medium representation of each mode is valid for both loss and noise and, hence, that a one-dimensional model can be used to estimate the best achievable noise factor when a given mode is used in a communications link. This model only requires knowledge of the real and imaginary parts of the modal dielectric constant. The former can be found by solving the lossless eigenvalue problem, while the latter can be estimated using perturbation theory. Because of their high loss, the theory is most relevant to plasmonic waveguides, and its application is demonstrated using single interface, slab, and slot guide examples. The best noise performance is offered by the long-range plasmon supported by the slab guide.

Syms, R. R. A., E-mail: r.syms@imperial.ac.uk; Solymar, L. [Optical and Semiconductor Devices Group, EEE Department, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom)

2014-06-07T23:59:59.000Z

275

E-Print Network 3.0 - ambiental considerando inovacoes Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

le linee di tendenza e successivamente importa i dati in ambiente... in ambiente Matlab sia in ambi- ente Excel e conduci l'indagine sul comportamento di questi ... Source:...

276

Reflecting the Revised PM 2.5 National Ambient Air Quality Standard...  

Broader source: Energy.gov (indexed) [DOE]

Reflecting the Revised PM 2.5 National Ambient Air Quality Standard in NEPA Evaluations Reflecting the Revised PM 2.5 National Ambient Air Quality Standard in NEPA Evaluations This...

277

E-Print Network 3.0 - ambiental para poblaciones Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 41 Manuel Garca Snchez-Colomer -1 Evaluacin del impacto ambiental Summary: necesaria para integrar la variable ambiental en la...

278

E-Print Network 3.0 - ambiental ceniza vegetal Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

de 2 mgkg Plomo No ms de 1 mgkg MINISTERIO DE MEDIO AMBIENTE 1405 REAL DECRETO... Impacto Ambiental de proyectos La disposicin final sptima de la Ley 342007, de 15 de...

279

E-Print Network 3.0 - ambientes costeiros tropicais Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ambientes costeiros tropicais Page: << < 1 2 3 4 5 > >> 1 coleo explorando o ensino o brasil e o meio ambiente antrtico Summary: coleo explorando o ensino 10 volume o brasil e...

280

E-Print Network 3.0 - ambient pressure synthesis Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ambient pressure. However, high-pressure... . On the other hand, Ca is not known to superconduct at ambient pressure, but be- comes superconducting at 1:2 K... resistivity and ac...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Photoelectron Spectroscopy under Ambient Pressure and Temperature Conditions  

SciTech Connect (OSTI)

We describe the development and applications of novel instrumentation for photoemission spectroscopy of solid or liquid surfaces in the presence of gases under ambient conditions or pressure and temperature. The new instrument overcomes the strong scattering of electrons in gases by the use of an aperture close to the surface followed by a differentially-pumped electrostatic lens system. In addition to the scattering problem, experiments in the presence of condensed water or other liquids require the development of special sample holders to provide localized cooling. We discuss the first two generations of Ambient Pressure PhotoEmission Spectroscopy (APPES) instruments developed at synchrotron light sources (ALS in Berkeley and BESSY in Berlin), with special focus on the Berkeley instruments. Applications to environmental science and catalytic chemical research are illustrated in two examples.

Ogletree, D. Frank; Bluhm, Hendrik; Hebenstreit, Eleonore B.; Salmeron, Miquel

2009-02-27T23:59:59.000Z

282

AMBIENT PM2.5 SAMPLING AND ANALYSIS  

SciTech Connect (OSTI)

This interim report summarizes detailed findings and conclusions drawn from evaluations of data obtained from the operation of ambient PM{sub 2.5} speciation sites in a geographical area encompassing southeastern Ohio, western Pennsylvania and northwestern West Virginia. The overall goal of this program, called the Upper Ohio River Valley Project (UORVP), is to better understand the relationship between coal-based power system emissions and ambient air quality in the Upper Ohio River Valley region through the collection of chemically resolved or speciated data. A summary of the sampling activities, sample analyses and the correlation and interpretation of data acquired from February 1999 through March of 2001 are reported. Mass and speciated data from urban and rural sources are compared and seasonal variations in PM{sub 2.5} distribution are also examined. Correlations between meteorological parameters and total PM{sub 2.5} mass are also presented.

Unknown

2002-10-31T23:59:59.000Z

283

AMBIENT PM2.5 SAMPLING AND ANALYSIS  

SciTech Connect (OSTI)

This interim report summarizes detailed findings and conclusions drawn from evaluations of data obtained from the operation of ambient PM{sub 2.5} speciation sites in a geographical area encompassing southeastern Ohio, western Pennsylvania and northwestern West Virginia. The overall goal of this program, called the Upper Ohio River Valley Project (UORVP), is to better understand the relationship between coal-based power system emissions and ambient air quality in the Upper Ohio River Valley region through the collection of chemically resolved or speciated data. A summary of the sampling activities, sample analyses and the correlation and interpretation of data acquired from February 1999 through March of 2001 are reported. Mass and speciated data from urban and rural sources are compared and seasonal variations in PM{sub 2.5} distribution are also examined. Correlations between meteorological parameters and total PM{sub 2.5} mass are also presented.

Unknown

2001-10-31T23:59:59.000Z

284

Water Power Calculator Temperature and Analog Input/Output Module Ambient Temperature Testing  

SciTech Connect (OSTI)

Water Power Calculator Temperature and Analog input/output Module Ambient Temperature Testing A series of three ambient temperature tests were conducted for the Water Power Calculator development using the INL Calibration Laboratory’s Tenney Environmental Chamber. The ambient temperature test results demonstrate that the Moore Industries Temperature Input Modules, Analog Input Module and Analog Output Module, ambient temperature response meet or exceed the manufactures specifications

Mark D. McKay

2011-02-01T23:59:59.000Z

285

E-Print Network 3.0 - ambient air concentrations Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

times ... Source: National Center for Environmental Health- Publications and Products Collection: Environmental Sciences and Ecology 3 Emissions Standards and Ambient...

286

Readout process and noise elimination firmware for the Fermilab beam loss system  

SciTech Connect (OSTI)

In the Fermilab Beam Loss Monitor System, inputs from ion chambers are integrated for a short period of time, digitized and processed to create the accelerator abort request signals. The accelerator power supplies employing 3-phase 60Hz AC cause noise at various harmonics on our inputs which must be eliminated for monitoring purposes. During accelerator ramping, both the sampling frequency and the amplitudes of the noise components change. As such, traditional digital filtering can partially reduce certain noise components but not all. A nontraditional algorithm was developed in our work to eliminate remaining ripples. The sequencing in the FPGA firmware is conducted by a micro-sequencer core we developed: the Enclosed Loop Micro-Sequencer (ELMS). The unique feature of the ELMS is that it supports the ''FOR'' loops with pre-defined iterations at the machine code level, which provides programming convenience and avoids many micro-complexities from the beginning.

Wu, Jinyuan; Baumbaugh, Alan; Drennan, Craig; Thurman-Keup, Randy; Lewis, Jonathan; Shi, Zonghan; /Fermilab

2007-05-01T23:59:59.000Z

287

Noise Reduction with Microphone Arrays for Speaker Identification  

SciTech Connect (OSTI)

Reducing acoustic noise in audio recordings is an ongoing problem that plagues many applications. This noise is hard to reduce because of interfering sources and non-stationary behavior of the overall background noise. Many single channel noise reduction algorithms exist but are limited in that the more the noise is reduced; the more the signal of interest is distorted due to the fact that the signal and noise overlap in frequency. Specifically acoustic background noise causes problems in the area of speaker identification. Recording a speaker in the presence of acoustic noise ultimately limits the performance and confidence of speaker identification algorithms. In situations where it is impossible to control the environment where the speech sample is taken, noise reduction filtering algorithms need to be developed to clean the recorded speech of background noise. Because single channel noise reduction algorithms would distort the speech signal, the overall challenge of this project was to see if spatial information provided by microphone arrays could be exploited to aid in speaker identification. The goals are: (1) Test the feasibility of using microphone arrays to reduce background noise in speech recordings; (2) Characterize and compare different multichannel noise reduction algorithms; (3) Provide recommendations for using these multichannel algorithms; and (4) Ultimately answer the question - Can the use of microphone arrays aid in speaker identification?

Cohen, Z

2011-12-22T23:59:59.000Z

288

Ambient methods and apparatus for rapid laser trace constituent analysis  

DOE Patents [OSTI]

A method and apparatus are disclosed for measuring trace amounts of constituents in samples by using laser induced breakdown spectroscopy and laser induced fluorescence under ambient conditions. The laser induced fluorescence is performed at a selected wavelength corresponding to an absorption state of a selected trace constituent. The intensity value of the emission decay signal which is generated by the trace constituent is compared to calibrated emission intensity decay values to determine the amount of trace constituent present.

Snyder, Stuart C. (Idaho Falls, ID); Partin, Judy K. (Idaho Falls, ID); Grandy, Jon D. (Idaho Falls, ID); Jeffery, Charles L. (Blackfoot, ID)

2002-01-01T23:59:59.000Z

289

Crnica: "A horta na cidade" (Primavera Ambiental 2013)  

E-Print Network [OSTI]

Crónica: "A horta na cidade" (Primavera Ambiental 2013) O pasado mércores 10 de abril tivo lugar na con ADEGA. A actividade que leva por título "A horta na cidade" consistiu nunha conferencia a cargo de, Isabel Barrio explicounos os pros e contras dos diferentes tipos de hortas urbanas, dende as máis básicas

Fraguela, Basilio B.

290

Mode Shape Estimation Algorithms Under Ambient Conditions: A Comparative Review  

SciTech Connect (OSTI)

Abstract—This paper provides a comparative review of five existing ambient electromechanical mode shape estimation algorithms, i.e., the Transfer Function (TF), Spectral, Frequency Domain Decomposition (FDD), Channel Matching, and Subspace Methods. It is also shown that the TF Method is a general approach to estimating mode shape and that the Spectral, FDD, and Channel Matching Methods are actually special cases of it. Additionally, some of the variations of the Subspace Method are reviewed and the Numerical algorithm for Subspace State Space System IDentification (N4SID) is implemented. The five algorithms are then compared using data simulated from a 17-machine model of the Western Electricity Coordinating Council (WECC) under ambient conditions with both low and high damping, as well as during the case where ambient data is disrupted by an oscillatory ringdown. The performance of the algorithms is compared using the statistics from Monte Carlo Simulations and results from measured WECC data, and a discussion of the practical issues surrounding their implementation, including cases where power system probing is an option, is provided. The paper concludes with some recommendations as to the appropriate use of the various techniques. Index Terms—Electromechanical mode shape, small-signal stability, phasor measurement units (PMU), system identification, N4SID, subspace.

Dosiek, Luke; Zhou, Ning; Pierre, John W.; Huang, Zhenyu; Trudnowski, Daniel J.

2013-05-01T23:59:59.000Z

291

Real Decreto Legislativo 1302/1986, de 28 de junio, de evaluacin de impacto ambiental  

E-Print Network [OSTI]

Real Decreto Legislativo 1302/1986, de 28 de junio, de evaluación de impacto ambiental (BOE núm. 155, de 30 de junio de 1986) EXPOSICION DE MOTIVOS Las evaluaciones de impacto ambiental constituyen efectos derivados de la actividad proyectada. Las evaluaciones de impacto ambiental, que han tenido ese

Espigares, Tíscar

292

CoHemis colabora con nuevo proyecto de NSF para la adaptacin sustentable de ambientes costeros  

E-Print Network [OSTI]

CoHemis colabora con nuevo proyecto de NSF para la adaptación sustentable de ambientes costeros Por generar soluciones viables económicamente pero a la misma vez amigables con el ambiente. Para lograr esto acompañan como co-investigadores los Drs. Don Degroot (profesor de ingeniería civil y ambiental en UMASS

Gilbes, Fernando

293

Exploring Early Evaluation Techniques of Ambient Health Promoting Devices in Home Environments of Senior  

E-Print Network [OSTI]

Plant and the MiMo (Mirror Motive). We used technology probe for early evaluation of the Ambient Plant of a familiar domestic object and practice. 2.1 Prototyping method for Ambient Plant: Technology Probe We upon the existing conceptual models of health monitoring ambient devices. Categories and Subject

Connelly, Kay

294

Ambient gas effects on the dynamics of laser-produced tin plume expansion  

E-Print Network [OSTI]

Ambient gas effects on the dynamics of laser-produced tin plume expansion S. S. Harilal,a Beau O in the development of an extreme ultraviolet lithographic light source. An ambient gas that is transparent to 13.5 nm and deceleration of plume species, the addition of ambient gas leads to other events such as double peak formation

Tillack, Mark

295

LINEAMIENTOS PARA IMPLEMENTAR LOS INSTRUMENTOS ECONÓMICOS DE LA LEGISLACIÓN AMBIENTAL DE LA REGIÓN CENTRO OCCIDENTE DE MÉXICO. RESULTADOS DE UNA INVESTIGACION PROSPECTIVA  

E-Print Network [OSTI]

o servicios con impacto ambiental positivo, gestionarde una evaluación de impacto ambiental). Criterios generalesque determine el estudio de impacto ambiental y estimular al

Hernandez Aguilar, Gerardo P.; de la Torre, Gabriela Ruiz

2012-01-01T23:59:59.000Z

296

Evaluating charge noise acting on semiconductor quantum dots in the circuit quantum electrodynamics architecture  

SciTech Connect (OSTI)

We evaluate the charge noise acting on a GaAs/GaAlAs based semiconductor double quantum dot dipole-coupled to the voltage oscillations of a superconducting transmission line resonator. The in-phase (I) and the quadrature (Q) components of the microwave tone transmitted through the resonator are sensitive to charging events in the surrounding environment of the double dot with an optimum sensitivity of 8.5×10{sup ?5}?e/?(Hz). A low frequency 1/f type noise spectrum combined with a white noise level of 6.6×10{sup ?6} e{sup 2}/Hz above 1?Hz is extracted, consistent with previous results obtained with quantum point contact charge detectors on similar heterostructures. The slope of the 1/f noise allows to extract a lower bound for the double-dot charge qubit dephasing rate which we compare to the one extracted from a Jaynes-Cummings Hamiltonian approach. The two rates are found to be similar emphasizing that charge noise is the main source of dephasing in our system.

Basset, J.; Stockklauser, A.; Jarausch, D.-D.; Frey, T.; Reichl, C.; Wegscheider, W.; Wallraff, A.; Ensslin, K.; Ihn, T. [Solid State Physics Laboratory, ETH Zurich, CH-8093 Zurich (Switzerland)

2014-08-11T23:59:59.000Z

297

Near-surface seismic attenuation of P-waves in West Texas  

E-Print Network [OSTI]

impedance contmsts in the near-surface layers. Data were also analyzed to characterize vertical and horizontal variations in the ambient noise levels near the surface. It was found that by burying geophones 10 ft below the surface, the ambient noise level... was reduced by 20 dB. Furthermore, by burying geophone 50 ft or 100 ft, the ambient noise levels were less by 30 to 35 dB than at the surface. The ambient noise level increases at the surface because of numerous noise sources which in turn decreases...

Al-Zahrani, Said Awdhah

1992-01-01T23:59:59.000Z

298

E-Print Network 3.0 - ac phase noise Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

, evaluate experimentally, and docu- ment a low-noise discrete BJT amplifier. The equivalent input noise... Resistance: 600 Input noise voltage over the band 20 Hz to 20...

299

Random Offset Curves and Surfaces with Controllable Noise (Extended Abstract)  

E-Print Network [OSTI]

similar complex patterns often being able to be defined with the gradient noise functions. PORN is defined by replacing a static offset distance in a general offset with a gradient noise function. For example, PORN

Lee, In-Kwon

300

Modeling and managing separation for noise abatement arrival procedures  

E-Print Network [OSTI]

Aircraft noise is a significant concern to communities near airports, and therefore a constraint to the growth of aviation. Advanced noise abatement approach and arrival procedures have been shown in previous studies and ...

Ren, Liling

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Robust Microphone Array Signal Processing against Diffuse Noise  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 Structure of the thesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Chapter-filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.3.3 Blind noise decorrelation . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.4 State . . . . . . . . . . . . . . . . . . . 29 3.2.2 Fixed noise coherence model . . . . . . . . . . . . . . . . . . . . . . . 30 3.2.3 Blind

Paris-Sud XI, Université de

302

Active noise control of supersonic impinging jet using pulsed microjets  

E-Print Network [OSTI]

This thesis concerns an active noise control of supersonic impinging jet flow using unsteady microjet injection. Supersonic impinging jet involves several problems such as lift loss, ground erosion, significant noise ...

Hong, Seung Hyuck

2009-01-01T23:59:59.000Z

303

Noise removal at the rod synapse of mammalian retina   

E-Print Network [OSTI]

Mammalian rods respond to single photons with a hyperpolarization of about 1 mV which is accompanied by continuous noise. Since the mammalian rod bipolar cell collects signals from 20-100 rods, the noise from the converging ...

van Rossum, Mark; Smith, Robert

1998-01-01T23:59:59.000Z

304

Effects of Tidal Turbine Noise on Fish Hearing and Tissues - Draft Final Report - Environmental Effects of Marine and Hydrokinetic Energy  

SciTech Connect (OSTI)

Snohomish Public Utility District No.1 plans to deploy two 6 meter OpenHydro tidal turbines in Admiralty Inlet in Puget Sound, under a FERC pilot permitting process. Regulators and stakeholders have raised questions about the potential effect of noise from the turbines on marine life. Noise in the aquatic environment is known to be a stressor to many types of aquatic life, including marine mammals, fish and birds. Marine mammals and birds are exceptionally difficult to work with for technical and regulatory reasons. Fish have been used as surrogates for other aquatic organisms as they have similar auditory structures. This project was funded under the FY09 Funding Opportunity Announcement (FOA) to Snohomish PUD, in partnership with the University of Washington - Northwest National Marine Renewable Energy Center, the Sea Mammal Research Unit, and Pacific Northwest National Laboratory. The results of this study will inform the larger research project outcomes. Proposed tidal turbine deployments in coastal waters are likely to propagate noise into nearby waters, potentially causing stress to native organisms. For this set of experiments, juvenile Chinook salmon (Oncorhynchus tshawytscha) were used as the experimental model. Plans exist for prototype tidal turbines to be deployed into their habitat. Noise is known to affect fish in many ways, such as causing a threshold shift in auditory sensitivity or tissue damage. The characteristics of noise, its spectra and level, are important factors that influence the potential for the noise to injure fish. For example, the frequency range of the tidal turbine noise includes the audiogram (frequency range of hearing) of most fish. This study was performed during FY 2011 to determine if noise generated by a 6-m diameter OpenHydro turbine might affect juvenile Chinook salmon hearing or cause barotrauma. Naturally spawning stocks of Chinook salmon that utilize Puget Sound are listed as threatened (http://www.nwr.noaa.gov/ESA-Salmon-Listings/Salmon-Populations/Chinook/CKPUG.cfm); the fish used in this experiment were hatchery raised and their populations are not in danger of depletion. After they were exposed to simulated tidal turbine noise, the hearing of juvenile Chinook salmon was measured and necropsies performed to check for tissue damage. Experimental groups were (1) noise exposed, (2) control (the same handling as treatment fish but without exposure to tidal turbine noise), and (3) baseline (never handled). Experimental results indicate that non-lethal, low levels of tissue damage may have occurred but that there were no effects of noise exposure on the auditory systems of the test fish.

Halvorsen, Michele B.; Carlson, Thomas J.; Copping, Andrea E.

2011-09-30T23:59:59.000Z

305

Low-frequency 1/f noise in MoS{sub 2} transistors: Relative contributions of the channel and contacts  

SciTech Connect (OSTI)

We report on the results of the low-frequency (1/f, where f is frequency) noise measurements in MoS{sub 2} field-effect transistors revealing the relative contributions of the MoS{sub 2} channel and Ti/Au contacts to the overall noise level. The investigation of the 1/f noise was performed for both as fabricated and aged transistors. It was established that the McWhorter model of the carrier number fluctuations describes well the 1/f noise in MoS{sub 2} transistors, in contrast to what is observed in graphene devices. The trap densities extracted from the 1/f noise data for MoS{sub 2} transistors, are 2?×?10{sup 19}?eV{sup ?1}cm{sup ?3} and 2.5?×?10{sup 20}?eV{sup ?1}cm{sup ?3} for the as fabricated and aged devices, respectively. It was found that the increase in the noise level of the aged MoS{sub 2} transistors is due to the channel rather than the contact degradation. The obtained results are important for the proposed electronic applications of MoS{sub 2} and other van der Waals materials.

Renteria, J.; Jiang, C. [Nano-Device Laboratory, Department of Electrical Engineering, Bourns College of Engineering, University of California – Riverside, Riverside, California 92521 (United States); Samnakay, R. [Materials Science and Engineering Program, Bourns College of Engineering, University of California – Riverside, Riverside, California 92521 (United States); Rumyantsev, S. L. [Department of Electrical, Computer, and Systems Engineering, Center for Integrated Electronics, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States); Ioffe Physical-Technical Institute, St. Petersburg 194021 (Russian Federation); Goli, P.; Balandin, A. A., E-mail: balandin@ee.ucr.edu [Nano-Device Laboratory, Department of Electrical Engineering, Bourns College of Engineering, University of California – Riverside, Riverside, California 92521 (United States); Materials Science and Engineering Program, Bourns College of Engineering, University of California – Riverside, Riverside, California 92521 (United States); Shur, M. S. [Department of Electrical, Computer, and Systems Engineering, Center for Integrated Electronics, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)

2014-04-14T23:59:59.000Z

306

Active noise canceling system for mechanically cooled germanium radiation detectors  

DOE Patents [OSTI]

A microphonics noise cancellation system and method for improving the energy resolution for mechanically cooled high-purity Germanium (HPGe) detector systems. A classical adaptive noise canceling digital processing system using an adaptive predictor is used in an MCA to attenuate the microphonics noise source making the system more deployable.

Nelson, Karl Einar; Burks, Morgan T

2014-04-22T23:59:59.000Z

307

Lagrangian-Eulerian Advection of Noise and Dye Textures  

E-Print Network [OSTI]

Lagrangian-Eulerian Advection of Noise and Dye Textures for Unsteady Flow Visualization Bruno would take when released into the flow. We apply the scheme to noise and dye advection fields, and apply it to noise and dye advection. The method combines the advantages

Erlebacher, Gordon

308

MEASURING NOISE CORRELATION FOR IMPROVED VIDEO DENOISING Anil Kokaram  

E-Print Network [OSTI]

, white, noise sources. In practice this is almost always violated by real media. Film grain noise in archived video content, be it consumer digital camera or film orginated. As an example of how window side effect naturally led to the design of spatio-temporal noise reduction filters intro- duced

Tomkins, Andrew

309

Diesel knock noise from combustion phenomenon to perceived signals  

E-Print Network [OSTI]

Diesel knock noise from combustion phenomenon to perceived signals O. Sauvagea , A. Lauracb , M for reducing Diesel knock are modifications of engine parameters used for controlling combustion processes-acoustic properties, throught its noticeable combustion noise (also called "Diesel knock"). Combustion noise generated

Paris-Sud XI, Université de

310

Parallel Imaging and Acceleration in the Johnson Noise Dominated Regime  

E-Print Network [OSTI]

Parallel Imaging and Acceleration in the Johnson Noise Dominated Regime Cristen D. LaPierre1 receive coil in the parallel array. At low field, uncorrelated Johnson noise dominates, providing in the Johnson noise dominated regime. With the eight channel array, SENSE acceleration can be implemented

Rosen, Matthew S

311

Separating Signal from Noise in Global Warming Bert W. Rust  

E-Print Network [OSTI]

Separating Signal from Noise in Global Warming Bert W. Rust Reprinted from the CD Rust, B. W. (2003) "Separating Signal from Noise in Global Warming," Computing Science and Statistics, 35, 263-277. ­ or ­ Rust, B. W. (2003) "Separating Signal from Noise in Global Warming," Computing Science and Statistics, 35

Rust, Bert W.

312

Blue Noise through Optimal Transport Fernando de Goes  

E-Print Network [OSTI]

Blue Noise through Optimal Transport Fernando de Goes Caltech Katherine Breeden Stanford Victor high-quality blue noise point distributions of arbitrary density functions. At its core is a novel diagrams. Our mathematical, algorithmic, and practical contributions lead to high-quality blue noise point

Desbrun, Mathieu

313

Extremal shot noises, heavy tails and maxstable random fields.  

E-Print Network [OSTI]

Extremal shot noises, heavy tails and max­stable random fields. Clément Dombry # May 31, 2010 Abstract We consider the extremal shot noise defined by M(y) = sup{mh(y - x); (x, m) # #}, where function. Extremal shot noises naturally appear in extreme value theory as a model for spatial extremes

Recanati, Catherine

314

Quantum-noise quenching in quantum tweezers  

E-Print Network [OSTI]

The efficiency of extracting single atoms or molecules from an ultracold bosonic reservoir is theoretically investigated for a protocol based on lasers, coupling the hyperfine state in which the atoms form a condensate to another stable state, in which the atom experiences a tight potential in the regime of collisional blockade, the quantum tweezers. The transfer efficiency into the single-atom ground state of the tight trap is fundamentally limited by the collective modes of the condensate, which are thermally and dynamically excited and constitute the ultimate noise sources. This quantum noise can be quenched for sufficiently long laser pulses, thereby achieving high efficiencies, and showing that this protocol can be applied for quantum information processing based on tweezer traps for neutral atoms.

Zippilli, Stefano; Lutz, Eric; Morigi, Giovanna; Schleich, Wolfgang

2010-01-01T23:59:59.000Z

315

Nonequilibrium noise in electrophoresis: the microion wind  

E-Print Network [OSTI]

We analyze theoretically the dynamics of a single colloidal particle in an externally applied electric field. The thermal motions of microions lead to an anisotropic, nonequilibrium source of noise, pro- portional to the field, in the effective Langevin equation for the colloid. The fluctuation-dissipation ratio depends strongly on frequency, and the colloid if displaced from its steady-state position relaxes with a velocity not proportional to the gradient of the logarithm of the steady-state probability.

Suropriya Saha; Sriram Ramaswamy

2009-07-02T23:59:59.000Z

316

The detection of signals buried in noise  

E-Print Network [OSTI]

This paper examines signal detection in the presence of noise, with a particular emphasis to the nuclear activation analysis. The problem is to decide what between the signal-plus-background and no-signal hypotheses fits better the data and to quantify the relevant signal amplitude or detection limit. Our solution is based on the use of Bayesian inferences to test the different hypotheses.

Bergamaschi, Luigi; Giordani, Laura; Mana, Giovanni; Oddone, Massimo

2013-01-01T23:59:59.000Z

317

Association of ambient air quality with children`s lung function in urban and rural Iran  

SciTech Connect (OSTI)

During the summer of 1994, a cross-sectional epidemiological study, in which the pulmonary function of children in Tehran was compared with pulmonary function in children in a rural town in Iran, was conducted. Four hundred children aged 5--11 y were studied. Daytime ambient nitrogen dioxide, sulfur dioxide, and particulate matter were measured with portable devices, which were placed in the children`s neighborhoods on the days of study. Levels of these ambient substances were markedly higher in urban Tehran than in rural areas. Children`s parents were questioned about home environmental exposures (including heating source and environmental tobacco smoke) and the children`s respiratory symptoms. Pulmonary function was assessed, both by spirometry and peak expiratory flow meter. Forced expiratory volume in 1 s and forced vital capacity--as a percentage of predicted for age, sex and height--were significantly lower in urban children than in rural children. Both measurements evidenced significant reverse correlations with levels of sulfur dioxide, nitrogen dioxide, and particulate matter. Differences in spirometric lung function were not explained by nutritional status, as assessed by height and weight for age, or by home environmental exposures. Reported airway symptoms were higher among rural children, whereas reported physician diagnosis of bronchitis and asthma were higher among urban children. The association between higher pollutant concentrations and reduced pulmonary function in this urban-rural comparison suggests that there is an effect of urban air pollution on short-term lung function and/or lung growth and development during the preadolescent years.

Asgari, M.M.; Dubois, A.; Beckett, W.S. [Yale Univ. School of Medicine, New Haven, CT (United States); Asgari, M. [Shaheed Beheshti Univ., Tehran (Iran, Islamic Republic of); Gent, J. [John B. Pierce Lab., New Haven, CT (United States)

1998-05-01T23:59:59.000Z

318

Graphene-based terahertz photodetector by noise thermometry technique  

SciTech Connect (OSTI)

We report the characteristics of graphene-based terahertz (THz) photodetector based on noise thermometry technique by measuring its noise power at frequency from 4 to 6 GHz. Hot electron system in graphene microbridge is generated after THz photon pumping and creates extra noise power. The equivalent noise temperature and electron temperature increase rapidly in low THz pumping regime and saturate gradually in high THz power regime which is attributed to a faster energy relaxation process involved by stronger electron-phonon interaction. Based on this detector, a conversion efficiency around 0.15 from THz power to noise power in 4–6?GHz span has been achieved.

Wang, Ming-Jye, E-mail: mingjye@asiss.sinica.edu.tw [Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan (China); Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China); Wang, Ji-Wun [Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan (China); Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); Wang, Chun-Lun; Chiang, Yen-Yu; Chang, Hsian-Hong [Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan (China)

2014-01-20T23:59:59.000Z

319

Impacts of Vessel Noise Perturbations on the Resident Sperm Whale Population in the Gulf of Mexico  

E-Print Network [OSTI]

RESPONSE TO NOISE ........... 92 VII FRAMEWORK FOR THE MANAGEMENT OF MARINE NOISE POLLUTION ....................................................................................... 101 Regional Framework for Noise... Pollution Management ................ 102 Nation-State Provisions .................................................................. 106 International Framework for Noise Pollution Management .......... 112 Proposed Guidelines...

Azzara, Alyson

2012-07-16T23:59:59.000Z

320

Hazard surveillance for workplace magnetic fields. 1: Walkaround sampling method for measuring ambient field magnitude; 2: Field characteristics from waveform measurements  

SciTech Connect (OSTI)

Recent epidemiologic research has suggested that exposure to extremely low frequency (ELF) magnetic fields (MF) may be associated with leukemia, brain cancer, spontaneous abortions, and Alzheimer`s disease. A walkaround sampling method for measuring ambient ELF-MF levels was developed for use in conducting occupational hazard surveillance. This survey was designed to determine the range of MF levels at different industrial facilities so they could be categorized by MF levels and identified for possible subsequent personal exposure assessments. Industries were selected based on their annual electric power consumption in accordance with the hypothesis that large power consumers would have higher ambient MFs when compared with lower power consumers. Sixty-two facilities within thirteen 2-digit Standard Industrial Classifications (SIC) were selected based on their willingness to participate. A traditional industrial hygiene walkaround survey was conducted to identify MF sources, with a special emphasis on work stations.

Methner, M.M.; Bowman, J.D.

1998-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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321

CO{sub 2} Capture by Sub-ambient Membrane Operation  

SciTech Connect (OSTI)

The main objective of the project was to develop a CO{sub 2} capture process based on sub-ambient temperature operation of a hollow fiber membrane. The program aims to reach the eventual DOE program goal of > 90% CO{sub 2} capture from existing PC fired power plants with < 35% increase in the cost of electricity. The project involves closed-loop testing of commercial fiber bundles under simulated process conditions to test the mechanical integrity and operability of membrane module structural component under sub ambient temperature. A commercial MEDAL 12” bundle exhibited excellent mechanical integrity for 2 months. However, selectivity was ~25% lower than expected at sub-ambient conditions. This could be attributed to a small feed to permeate leak or bundle non-ideality. To investigate further, and due to compressor flow limitations, the 12” bundle was replaced with a 6” bundle to conduct tests with lower permeate/feed ratios, as originally planned. The commercial 6” bundle was used for both parametric testing as well as long-term stability testing at sub-ambient conditions. Parametric studies were carried out both near the start and end of the long-term test. The parametric studies characterized membrane performance over a broad range of feed conditions: temperature (-25°C to -45°C), pressure (160 psig to 200 psig), and CO{sub 2} feed concentration (18% to 12%). Performance of the membrane bundle was markedly better at lower temperature (-45ºC), higher pressure (200 psig) and higher CO{sub 2} feed concentration (18%). The long-term test was conducted at these experimentally determined “optimum” feed conditions. Membrane performance was stable over 8 months at sub-ambient temperature operation. The experimentally measured high performance of the membrane bundle at sub-ambient operating conditions provides justification for interest in sub-ambient membrane processing of flue gas. In a parallel activity, the impact of contaminants (100 ppm SOx and NOx) on membrane performance was tested in the laboratory with membrane minipermeators. NO permeance is intermediate between CO{sub 2} and N{sub 2}; while both SO{sub 2} and NO{sub 2} are more permeable than CO{sub 2} at cold condition. This implies that SO{sub 2} and NO{sub 2} will be efficiently removed with CO{sub 2} into the membrane permeate in the proposed cold membrane process. Calculations were performed by Air Liquide Engineering (ALE) to estimate capture costs based on the proposed sub-ambient temperature membrane process for 90% CO{sub 2} capture from an air- fired coal power plant delivering 550 MW net electricity. Membrane performance in the process simulation was defined by the final parametric test results. This analysis involved refining the process simulation model, obtaining relevant capital cost estimates and using these to estimate a 20-year levelized cost of electricity (LCOE). A sensitivity analysis shows CO{sub 2} capture specific energy requirements of 216-242 kwh/T CO{sub 2} captured. The LCOE estimating methodology followed DOE/NETL study 2010/1397. This analysis indicates increases in LCOE between 48% and 53%. For most equipment, the budgetary capital cost estimates are expected to be valid within ± 20%. The most significant capital costs are due to the (i) feed compression and associated gas pretreatment and (ii) membrane system. For both items, there is a realistic chance for cost reductions in the immediate future (0-5 years) as well as long term reductions. The process continues to hold promise with anticipated cost reductions in compression and membrane operations. In particular, membrane costs could be reduced significantly by increased production volume (economy of scale) as well as optimization of bundle size and configuration for this application. PFD definition for a potential field test has been completed through (i) simulation work at DRTC, (ii) discussions with compressor manufacturers and (iii) a field visit to t e NCCC, Wilsonville, AL. The PC4 facility at the NCCC is a suitable site for a 0.1 MW scale test.

Kulkarni, S.; Hasse, D.; Sanders, E.; Chaubey, T.

2012-11-30T23:59:59.000Z

322

Broadband, noise-free optical quantum memory with neutral nitrogen-vacancy centers in diamond  

E-Print Network [OSTI]

It is proposed that the ground-state manifold of the neutral nitrogen-vacancy center in diamond could be used as a quantum two-level system in a solid-state-based implementation of a broadband, noise-free quantum optical memory. The proposal is based on the same-spin $\\Lambda$-type three level system created between the two E orbital ground states and the A$_1$ orbital excited state of the center, and the cross-linear polarization selection rules obtained with the application of transverse electric field or uniaxial stress. Possible decay and decoherence mechanisms of this system are discussed, and it is shown that high efficiency, noise-free storage of photons with a bandwidth of a few tens of GHz for a few tens of nanoseconds would be possible at low temperature.

E. Poem; C. Weinzetl; J. Klatzow; K. T. Kaczmarek; J. H. D. Munns; T. F. M. Champion; D. J. Saunders; J. Nunn; I. A. Walmsley

2015-01-11T23:59:59.000Z

323

The potential of future aircraft technology for noise and pollutant emissions reduction  

E-Print Network [OSTI]

for weight, lift-to-drag ratio and engine efficiency obtained from an extensive survey of the open literature. Also included was a consideration of hydrogen as an alternative, zero-CO2, fuel. The use of hydrogen as a transportation fuel is challenging... turbofan engine BWB Blended wing-body aircraft configuration CAEP Committee on Aviation Environmental Protection CO2 Carbon dioxide CRC Conceptual Research Corporation (NASA N+3 contractor) EIS Entry into service EPNdB Effective perceived noise level...

Graham, W. R.; Hall, C. A.; Vera Morales, M.

2014-03-27T23:59:59.000Z

324

Geometric phase of a qubit driven by a phase noise laser under non-Markovian dynamics  

SciTech Connect (OSTI)

Robustness of the geometric phase (GP) with respect to the environmental effects is a basic condition for an effective quantum computation. Here, we study quantitatively the GP of a two-level atom system driven by a phase noise laser under non-Markovian dynamics in terms of different parameters involved in the whole system. We find that with the change of the damping coupling, the GP is very sensitive to its properties exhibiting long collapse and revival phenomena, which play a significant role in enhancing the stabilization and control of the system dynamics. Moreover, we show that the GP can be considered as a tool for testing and characterizing the nature of the qubit–environment coupling. Due to the significance of how a system is quantum correlated with its environment in the construction of a scalable quantum computer, the entanglement dynamics between the qubit with its environment under external classical noise is evaluated and investigated during the time evolution. -- Highlights: •Geometric phase under noise phase laser. •Dynamics of the geometric phase under non-Markovian dynamics in the presence of classical noise. •Solution of master equation of the system in terms atomic inversion. •Nonlocal correlation between the system and its environment under non-Markovianity.

Berrada, K., E-mail: kberrada@ictp.it

2014-01-15T23:59:59.000Z

325

Suppressing the influence of additive noise on the Kalman gain for low residual noise speech enhancement  

E-Print Network [OSTI]

present a detailed analysis of the Kalman filter for the application of speech enhancement and identify: Kalman filtering; Speech enhancement; Linear prediction; Dolph-Chebycher windows 1. Introduction In the problem of speech enhancement, where a speech signal corrupted by noise is given, we are primarily

326

9722 Jueves 15 marzo 2001 BOE nm. 64 DE MEDIO AMBIENTE  

E-Print Network [OSTI]

de 2001, de la Secretaría General de Medio Ambiente, por la que se formula decla- ración de impacto Real Decreto Legislativo 1302/1986, de 28 de junio, de Evaluación de Impacto Ambiental, modificado por- to 1131/1988, de 30 de septiembre, establecen la obligación de formular Declaración de Impacto Ambiental

Seoane, Javier

327

EL REGADO Y LA EVALUACIN AMBIENTAL ESTRATGICA Oate Rubalcaba, Juan J.1  

E-Print Network [OSTI]

aplicación de los principios de la Evaluación de Impacto Ambiental a los PPP" (Sadler y Verheem 1996#12;#12;#12;EL REGADÍO Y LA EVALUACI�N AMBIENTAL ESTRAT�GICA Oñate Rubalcaba, Juan J.1 ; Suárez Cardona, Francisco2 ; Cachón de Mesa, Javier 3 1 Dpto. de Medio Ambiente. Universidad Europea de Madrid

Oñate, Juan J.

328

coleo explorando o ensino o brasil e o meio ambiente antrtico  

E-Print Network [OSTI]

coleção explorando o ensino 10 volume o brasil e o meio ambiente antártico #12;#12;coleção explorando o ensino volume 10 ensino fundamental e ensino médio o brasil e o meio ambiente antártico #12 Dados Internacionais de Catalogação na Publicação (CIP) O Brasil e o meio ambiente antártico : ensino

329

Electrical noise control in e-beam processing systems  

SciTech Connect (OSTI)

Electrical noise can be a problem in any system. The risk rises when the system contains an energetic noise source like an e-beam. Relief is more certain when facts about noise propagation are fresh in mind and this is a practical over-view of just these things. Though known singly by technical people, these effects are now brought together and related to one another. This discussion cites the practical importance of skin effect, conductor self-inductance, and the four coupling mechanisms including the justly feared conductively coupled {open_quotes}ground loop{close_quotes}. A look at the valuable yet inexpensive single Faraday-shield transformer leads to system concepts like incidental returns and the often overlooked need for intentional noise-abatement conductors. The wrap-up addresses practical matters like noise propagation through power wiring, followed by specific suggestions and examples of system layouts that inherently avoid harmful noise couplings.

Gunn, R. [Lawrence Livermore National Lab., CA (United States)

1996-12-31T23:59:59.000Z

330

Spectral Noise Correlations of an Ultrafast Frequency Comb  

E-Print Network [OSTI]

Cavity-based noise detection schemes are combined with ultrafast pulse shaping as a means to diagnose the spectral correlations of both the amplitude and phase noise of an ultrafast frequency comb. The comb is divided into ten spectral regions, and the distribution of noise as well as the correlations between all pairs of spectral regions are measured against the quantum limit. These correlations are then represented in the form of classical noise matrices, which furnish a complete description of the underlying comb dynamics. Their eigendecomposition reveals a set of theoretically predicted, decoupled noise modes that govern the dynamics of the comb. Finally, the matrices contain the information necessary to deduce macroscopic noise properties of the comb.

Roman Schmeissner; Jonathan Roslund; Claude Fabre; Nicolas Treps

2014-10-16T23:59:59.000Z

331

E-Print Network 3.0 - ambiental da escola Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

d'Igualada 7 Igualada Inspecci de Materials i... i Medi Ambient: Integraci d'Energies Renovables a l'Arquitectura ... Source: Politcnica de Catalunya, Universitat -...

332

E-Print Network 3.0 - ambiental institucionalizada actos Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ambiente PABLO MUNERA BRUIN Tecnologa Source: Escolano, Francisco - Departamento de Ciencia de la Computacin e Inteligencia Artificial, Universitat d'Alacant Collection:...

333

E-Print Network 3.0 - ambiental qualification analisis Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

una prova orale. La prova scritta... nella discussione di esercizi svolti in ambiente Matlab. 1. Un mese prima della data prevista per l Source: Guerrini, Carla - Dipartimento di...

334

Chapter 51 Attainment and Maintenance of the National Ambient Air Quality Standards (Kentucky)  

Broader source: Energy.gov [DOE]

Kentucky Administrative Regulation Chapter 51, entitled Attainment and Maintenance of the National Ambient Air Quality Standards, is promulgated under the authority of the Division of Air Quality...

335

Chemical reactivities of ambient air samples in three Southern California communities  

E-Print Network [OSTI]

like substances in air pollution particulates correalte withcontrol of ambient urban air pollution. Atmos. Environ. 91:of oxidative stress by air pollution mixtures. The PM 2.5

2015-01-01T23:59:59.000Z

336

Personal and Ambient Air Pollution is Associated with Increased Exhaled Nitric Oxide in Children with Asthma  

E-Print Network [OSTI]

in contrast to ambient data, personal exposure models showedsampling. Data for both F ENO and personal air pollutantdaily. pDR data were adjusted for personal RH (Chakrabarti

2006-01-01T23:59:59.000Z

337

Personal and Ambient Air Pollution is Associated with Increased Exhaled Nitric Oxide in Children with Asthma  

E-Print Network [OSTI]

1994. Nitric oxide and nitrogen dioxide: Method 6014. In:Molecular mechanisms of nitrogen dioxide induced epithelialEC, OC), and 24-hr nitrogen dioxide. Ambient exposures

2006-01-01T23:59:59.000Z

338

E-Print Network 3.0 - ambient ionization source Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: ionization present due to ambient sources such as radioactive materials in buildings, see discussion... be an efficient source of ionization ahead of a streamer, but...

339

E-Print Network 3.0 - ambient assistive technologies Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of the Conference Proceedings Citation Index. URL. www.iospress.nlloadtopload.php?isbnaise ASSISTIVE TECHNOLOGIES... ces etc), Ambient Assistance Living (e.g, ......

340

E-Print Network 3.0 - ambient temperature creep Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to creep correlation at that temperature. In addition, this paper describes some... of 1lms at ambient temperature. A fresh razor blade ... Source: Case Western Reserve...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

E-Print Network 3.0 - ambiental diversidade cultural Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Felipe Andrs Len Contrera; Astrid Matos Peixoto Kleinert Summary: para buscar recursos alimentares que as abelhas executam um servio importante ao ambiente. Voando de......

342

E-Print Network 3.0 - ambiental para comunidades Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering 50 Servicio de Informtica Servicio de Summary: adecuados. Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. Ambiente de......

343

E-Print Network 3.0 - ambiente responsabilidade social Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

12;Servicio de Informtica Tecnologas e... adecuados. Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. Ambiente de Source:...

344

E-Print Network 3.0 - ambientes internos hospitalares Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mathematics 57 Servicio de Informtica Servicio de Summary: adecuados. Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. Ambiente de......

345

E-Print Network 3.0 - adecuada al ambiente Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

al cambio Profesionalidad Vocacin de servicio... adecuados. Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. Ambiente de......

346

E-Print Network 3.0 - ambientes internos na Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Medicine 66 Servicio de Informtica Servicio de Summary: adecuados. Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. Ambiente de......

347

E-Print Network 3.0 - ambiente industrial interno Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mathematics 28 Servicio de Informtica Servicio de Summary: adecuados. Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. Ambiente de......

348

E-Print Network 3.0 - ambiental para uso Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

de Informtica Plan Estratgico. Servicio de Informtica Summary: . - Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. - Ambiente de...

349

E-Print Network 3.0 - ambientes urbanos criterios Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

y gestin administrativa con criterios de innovacin... adecuados. Autonoma y creatividad para la consecucin de los objetivos internos de cada rea. Ambiente de... ....

350

Effect of ambient conditions and fuel properties on homogeneous charge compression ignition engine operation  

E-Print Network [OSTI]

Practical application of Homogeneous Charge Compression Ignition (HCCI) combustion must demonstrate robust responses to variations in environmental conditions. This work examines the impact of ambient conditions and fuel ...

Andreae, Morgan M. (Morgan MacKenzie)

2006-01-01T23:59:59.000Z

351

E-Print Network 3.0 - ambient fine particulate Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

about Clean Transportation projects at the North Carolina Solar Center Summary: or maintenance areas for national ambient air quality standards (NAAQS) for ozone andor fine...

352

E-Print Network 3.0 - ambient computing research Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

over Anonymous Remote Comput- ing (ARC) framework for C over .NET. The service oriented... . An Ambient is defined abstractly as a bounded place where computation oc- curs....

353

Personal and Ambient Air Pollution is Associated with Increased Exhaled Nitric Oxide in Children with Asthma  

E-Print Network [OSTI]

ambient air pollution and respiratory health in schoolEnvironmental Health Perspectives Air pollution and F ENO inEnvironmental Health Perspectives Air pollution and F ENO in

2006-01-01T23:59:59.000Z

354

Analise Matematica IV Licenciaturas: Eng. Ambiente, Eng. Biologica, Eng. Quimica, Quimica  

E-Print Network [OSTI]

An´alise Matem´atica IV Licenciaturas: Eng. Ambiente, Eng. Biol´ogica, Eng. Qu´imica, Qu´imica 2o

Dias, Esmeralda Sousa

355

E-Print Network 3.0 - ambiental dos estudios Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mississippi durante el ao 2006, utilizando imgenes del sensor MODIS Summary: los de mayor impacto ambiental en cuanto a descarga de sedimentos y nutrientes se refiere, en la......

356

E-Print Network 3.0 - ambiental bajo iso Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Group Collection: Geosciences 19 Manuel Garca Snchez-Colomer -1 Evaluacin del impacto ambiental Summary: -funcionalidad es en general, bajo. 12;Manuel Garca...

357

E-Print Network 3.0 - ambiental para implantacao Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

16820 Sbado 29 abril 2006 BOE nm. 102 I. Disposiciones generales Summary: evaluacin de impacto ambiental constituye un instrumento eficaz en Espaa para la consecucin de...

358

E-Print Network 3.0 - ambientes reducidos para Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

16820 Sbado 29 abril 2006 BOE nm. 102 I. Disposiciones generales Summary: evaluacin de impacto ambiental constituye un instrumento eficaz en Espaa para la consecucin de...

359

E-Print Network 3.0 - ambiental del agua Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DE Summary: Anlisis econmico de los costes energticos, de los costes del agua y del impacto ambiental. Impacto... segunda circular enero 2011 CIENCIA, TECNOLOGA, POLTICA...

360

E-Print Network 3.0 - ambiental por derramamento Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

marinho por hidrocarbonetos aromticos policclicos (HPA... cientfica devido ao seu impacto ambiental e s ... Source: Ferreira, Mrcia M. C. - Instituto de Qumica,...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


361

E-Print Network 3.0 - ambiental para deposicao Sample Search...  

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16820 Sbado 29 abril 2006 BOE nm. 102 I. Disposiciones generales Summary: evaluacin de impacto ambiental constituye un instrumento eficaz en Espaa para la consecucin de...

362

E-Print Network 3.0 - ambiental estrategica para Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

16820 Sbado 29 abril 2006 BOE nm. 102 I. Disposiciones generales Summary: evaluacin de impacto ambiental constituye un instrumento eficaz en Espaa para la consecucin de...

363

E-Print Network 3.0 - ambientes del ecosistema Sample Search...  

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ECOLOGA II Materia Troncal de 1er Summary: . Ordenacin del territorio y evaluacin del impacto ambiental. 24. Restauracin de ecosistemas. Temas de... evaluadas por separado....

364

E-Print Network 3.0 - ambiental del establecimiento Sample Search...  

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2 as invasiones biolgicas hacen referencia al proceso de introduccin, Summary: del impacto ambiental que genera. Otra confusin habitual es la de llamar invasoras a...

365

E-Print Network 3.0 - ambiental del insecticida Sample Search...  

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2010, de 24 de marzo, de modificacin del texto refundido de la Ley de Evaluacin de Impacto Ambiental de... planes y programas sobre el medio ... Source: Espigares, Tscar -...

366

E-Print Network 3.0 - ambiental del municipio Sample Search Results  

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transitoria nica. Adaptacin de los Cen- Summary: tantos ejemplares del estudio de impacto ambiental como nmero de municipios en los que se localice el... Ley 31988, de...

367

E-Print Network 3.0 - acondicionamento ambiente sobre Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

>> 1 Comisso de Gerenciamento, Tratamento e Destinao de Summary: promover a reduo do impacto ambiental causado pelo descarte inadequado dos resduos qumicos gerados pela......

368

E-Print Network 3.0 - analisis ambiental por Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DE GPS SERVICIO DE Summary: & GBS 34) Plan de Ordenaci6n Territorial Declaraci6n de impacto ambiental Analisis de criminalidad... parte del mundo. Este sistema fue...

369

E-Print Network 3.0 - aislados desde ambientes Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mathematics 10 DatosdelaNASA Plan de contingencias del lanzamiento Summary: Final de Impacto Ambiental de la misin. La NASA prepara y ensaya planes de respuesta ante...

370

E-Print Network 3.0 - ambiente protegido sobre Sample Search...  

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Environmental Sciences and Ecology 3 Manuel Garca Snchez-Colomer -1 Evaluacin del impacto ambiental Summary: mantenimiento sobre taludes de desmonte 12;Manuel Garca...

371

E-Print Network 3.0 - ambiental dos catadores Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

38 Comisso de Gerenciamento, Tratamento e Destinao de Summary: promover a reduo do impacto ambiental causado pelo descarte inadequado dos resduos qumicos gerados pela......

372

E-Print Network 3.0 - ambientes sensibles isla Sample Search...  

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Environmental Sciences and Ecology 44 IMEM RAMON MARGALEF. CICLO DE CONFERENCIAS SOBRE IMPACTO AMBIENTAL Y CONSERVACIN DEL TERRITORIO Y EL PAISAJE: INVESTIGACIN PARA ENFRENTAR...

373

E-Print Network 3.0 - ambiental del instituto Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

"Ramon Margalef" Novedades NOTICIAS Y EVENTOS... Edicin del Ciclo de conferencias: IMPACTO AMBIENTAL Y CONSERVACIN DEL TERRITORIO Y EL PAISAJE... DE CONSERVACIN DE...

374

E-Print Network 3.0 - ambiental por una Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Physics 15 Real Decreto Legislativo 13021986, de 28 de junio, de evaluacin de impacto ambiental Summary: una tcnica generalizada en todos los pases...

375

E-Print Network 3.0 - ambiente termoneutro dos Sample Search...  

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28 Comisso de Gerenciamento, Tratamento e Destinao de Summary: promover a reduo do impacto ambiental causado pelo descarte inadequado dos resduos qumicos gerados pela......

376

E-Print Network 3.0 - ambiental del centro Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

para el Estudio del Medio "Ramon Summary: Edicin del Ciclo de conferencias: IMPACTO AMBIENTAL Y CONSERVACIN DEL TERRITORIO Y EL PAISAJE... diario Informacin sobre...

377

E-Print Network 3.0 - ambient illumination source Sample Search...  

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illumination source Search Powered by Explorit Topic List Advanced Search Sample search results for: ambient illumination source Page: << < 1 2 3 4 5 > >> 1 Illuminating...

378

E-Print Network 3.0 - ambient stable quantitative Sample Search...  

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equations. In this paper an ambient agent ... Source: Treur, Jan - Department of Artificial Intelligence, Vrije Universiteit Amsterdam Collection: Computer Technologies and...

379

E-Print Network 3.0 - ambient dose equivalent Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

175 h. Ambient incandescent lights, however, produced a negligible... laser, light emitting diode ... Source: Yu, Peter K.N. - Department of Physics and Materials Science, City...

380

E-Print Network 3.0 - ambient particle pollution Sample Search...  

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is proposed to address critical issues relating to the public health impacts of ambient air pollution... . The overarching theme of the Center is a focus on characterizing...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
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381

E-Print Network 3.0 - ambient particle-bound pollution Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is proposed to address critical issues relating to the public health impacts of ambient air pollution... . The overarching theme of the Center is a focus on characterizing...

382

E-Print Network 3.0 - ambient particulate matterpm10 Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

particulate matterpm10 Page: << < 1 2 3 4 5 > >> 1 Statistical Issues in the Study of Air Pollution Involving Airborne Particulate Matter Summary: Ambient Air Quality Standards...

383

E-Print Network 3.0 - ambient pollutant particles Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is proposed to address critical issues relating to the public health impacts of ambient air pollution... . The overarching theme of the Center is a focus on characterizing...

384

E-Print Network 3.0 - ambient particulate matter-induced Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

particulate matter-induced Page: << < 1 2 3 4 5 > >> 1 Statistical Issues in the Study of Air Pollution Involving Airborne Particulate Matter Summary: Ambient Air Quality Standards...

385

PREPARATIVOS EN MARCHA PARA LA CONFERENCIA SOBRE JUSTICIA AMBIENTAL NACIONAL Y EL PROGRAMA DE CAPACITACIÓN 2014  

Broader source: Energy.gov [DOE]

La conferencia regresa a D.C. del 26 al 28 de marzo de 2014 con la celebración de los 20 años de justicia ambiental pasados y futuros.

386

E-Print Network 3.0 - ambiente uma proposta Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

uma vez que estejam presentes em uma teoria, tudo Summary: em um ambiente consistente (neste caso, pelo acrescimo de consistente-A como uma hipotese adicional......

387

E-Print Network 3.0 - ambiental na costa Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for Systems and Robotics, Lisboa Collection: Engineering 3 coleo explorando o ensino o brasil e o meio ambiente antrtico Summary: Dados Internacionais de Catalogao na...

388

E-Print Network 3.0 - ambiente tabuleiros costeiros Sample Search...  

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ambiente, na restinga do Parque Estadual da Serra do Tabuleiro, Santa Catarina, Sul do Brasil. 2. Materiais... RESTINGA DO PARQUE ESTADUAL DA SERRA DO TABULEIRO, SANTA CATARINA....

389

E-Print Network 3.0 - ambiental das atividades Sample Search...  

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4 Sistemas de Gerncia de Workflows: Caractersticas, Distribuio e Luiz Antnio M. Pereira Summary: ;8 ambiente operacional e colocao das vrias atividades nas...

390

E-Print Network 3.0 - asegurar justicia ambiental Sample Search...  

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and Agricultural Engineering, Texas A&M University Collection: Engineering ; Renewable Energy 35 Hogares, medios de vida y recursos naturales en reas rurales de Summary: Ambiental...

391

E-Print Network 3.0 - ambient pressure sensitivity Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and spoilage organisms while keeping Summary: of the pressure (Figure 2). Both pure water and most moist foods subjected to a 600 MPa treatment at ambient... viruses appear...

392

E-Print Network 3.0 - ambient pressure experimental Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

superconductivity in europium metal M Debessai1 Summary: elements in yellow superconduct at ambient pressure and those (33) in light green are known to superconduct......

393

E-Print Network 3.0 - ambient pressure dependence Sample Search...  

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Significant... . Across the periodic table there are 29 elemental metals which superconduct at ambient pressure, as seen... nonmagnetic transition metals are superconducting...

394

E-Print Network 3.0 - ambient polycyclic aromatic Sample Search...  

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Adducts in Mothers Summary: . Exposure to genotoxins present in ambient air in Bangkok, Thailand: particle associated polycyclic aromatic... DNA Damage from Polycyclic Aromatic...

395

E-Print Network 3.0 - ambient temperatures conditions Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: change due to variations in workload and ambient conditions. The change in temperature can cause... Temperature Monitoring in 90nm CMOS PRESENTER: Mojan Norouzi TIME &...

396

E-Print Network 3.0 - ambient temperature secondary Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

38(S1):215228, 2004 Copyright c American Association for Aerosol Research Summary: distribution at ambient temperature and RH without active temperature and RH control, the...

397

E-Print Network 3.0 - ambient temperature Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

79 ENE-.R:GY ORNLSub80-616012 Research and Development of Summary: the refrigeration system's operating characteristics during low ambient temperature conditions b....

398

E-Print Network 3.0 - ambient temperature razrabotka Sample Search...  

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4 5 > >> 81 ENE-.R:GY ORNLSub80-616012 Research and Development of Summary: the refrigeration system's operating characteristics during low ambient temperature conditions b....

399

E-Print Network 3.0 - ambiente para atividade Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

atividades no primeiro semestre de 2009.Aproposta para um Mestrado Profissional em Farmacologia... desenvolvimento dentro de ambiente industrial na rea de Frmacos e...

400

Characterization of ambient air pollution for stochastic health models  

SciTech Connect (OSTI)

This research is an analysis of various measures of ambient air pollution useful in cross-sectional epidemiological investigations and rick assessments. The Chestnut Ridge area health effects investigation, which includes a cross-sectional study of respiratory symptoms in young children, is used as a case study. Four large coal-fired electric generating power plants are the dominant pollution sources in this area of western Pennsylvania. The air pollution data base includes four years of sulfur dioxide and five years of total suspended particulate concentrations at seventeen monitors. Some 70 different characterizations of pollution are constructed and tested. These include pollutant concentrations at various percentiles and averaging times, exceedence measures which show the amount of time a specified threshold concentration is exceeded, and several dosage measures which transform non-linear dose-response relationships onto pollutant concentrations.

Batterman, S.A.

1981-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Volcanic gas emissions and their effect on ambient air character  

SciTech Connect (OSTI)

This bibliography was assembled to service an agreement between Department of Energy and the USGS to provide a body of references and useful annotations for understanding background gas emissions from Kilauea volcano. The current East Rift Zone (ERZ) eruption of Kilauea releases as much as 500,000 metric tonnes of SO{sub 2} annually, along with lesser amounts of other chemically and radiatively active species including H{sub 2}S, HCl, and HF. Primary degassing locations on Kilauea are located in the summit caldera and along the middle ERZ. The effects of these emissions on ambient air character are a complex function of chemical reactivity, source geometry and effusivity, and local meteorology. Because of this complexity, we organized the bibliography into three main sections: (1) characterizing gases as they leave the edifice; (2) characterizing gases and chemical reaction products away from degassing sources; and (3) Hawaii Island meteorology.

Sutton, A.J. [Geological Survey, Menlo Park, CA (United States); Elias, T. [Geological Survey, Hawaii National Park, HI (United States). Hawaiian Volcano Observatory

1994-01-01T23:59:59.000Z

402

Integration of Noise and Coda Correlation Data into Kinematic...  

Broader source: Energy.gov (indexed) [DOE]

Integration of Noise and Coda Correlation Data into Kinematic and Waveform Inversions Fracture Network and Fluid Flow Imaging for EGS Applications from Multi-Dimensional Electrical...

403

Noise in Bose Josephson junctions: Decoherence and phase relaxation  

SciTech Connect (OSTI)

Squeezed states and macroscopic superpositions of coherent states have been predicted to be generated dynamically in Bose Josephson junctions. We solve exactly the quantum dynamics of such a junction in the presence of a classical noise coupled to the population-imbalance number operator (phase noise), accounting for, for example, the experimentally relevant fluctuations of the magnetic field. We calculate the correction to the decay of the visibility induced by the noise in the non-Markovian regime. Furthermore, we predict that such a noise induces an anomalous rate of decoherence among the components of the macroscopic superpositions, which is independent of the total number of atoms, leading to potential interferometric applications.

Ferrini, G.; Minguzzi, A.; Hekking, F. W. J. [Laboratoire de Physique et Modelisation des Milieux Condenses, Universite Joseph Fourier and CNRS, Boite Postale 166, F-38042 Grenoble (France); Spehner, D. [Laboratoire de Physique et Modelisation des Milieux Condenses, Universite Joseph Fourier and CNRS, Boite Postale 166, F-38042 Grenoble (France); Institut Fourier, Universite Joseph Fourier and CNRS, Boite Postale 74, F-38402 Saint Martin d'Heres (France)

2010-09-15T23:59:59.000Z

404

Enabling Green Energy and Propulsion Systems via Direct Noise...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Umesh Paliath, GE Global Research; Joe Insley, Argonne National Laboratory Enabling Green Energy and Propulsion Systems via Direct Noise Computation PI Name: Umesh Paliath PI...

405

Enabling Green Energy and Propulsion Systems via Direct Noise...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GE propulsion systems Enabling Green Energy and Propulsion Systems via Direct Noise Computation PI Name: Umesh Paliath PI Email: paliath@ge.com Institution: GE Global Research...

406

Review of Subcritical Source-Driven Noise Analysis Measurements  

SciTech Connect (OSTI)

Subcritical source-driven noise measurements are simultaneous Rossia and randomly pulsed neutron measurements that provide measured quantities that can be related to the subcritical neutron multiplication factor. In fact, subcritical source-driven noise measurements should be performed in lieu of Rossia measurements because of the additional information that is obtained from noise measurements such as the spectral ratio and the coherence functions. The basic understanding of source-driven noise analysis measurements can be developed from a point reactor kinetics model to demonstrate how the measured quantities relate to the subcritical neutron multiplication factor.

Valentine, T.E.

1999-11-01T23:59:59.000Z

407

Pulmonary function and respiratory symptoms of school children exposed to ambient air pollution  

SciTech Connect (OSTI)

This study was undertaken to evaluate the health effect of air pollution on pulmonary function and respiratory symptoms of Korean school children between 7 and 10 years of age during November 1995-January 1996. A standard respiratory symptom questionnaire was administered and spirometry was performed to examine pulmonary function of 121 children in an urban polluted area, Seoul, and of 119 children in non-polluted area, Sokcho, respectively. There was significant difference in the level of pulmonary function [forced expiratory volume in second (FEV{sub 1.0}) and forced vital capacity (FVC)] between exposed groups to polluted area and non-polluted area. Parental smoking was significantly related to respiratory symptoms of cough, phlegm, and the level of pulmonary function. The observed changes in FEV{sub 1.0} and FVC seemed to relate to home cooking fuel, not to respiratory symptoms. The additional longitudinal work that carefully monitors ambient and indoor air pollution and health effects data should be conducted to confirm these results.

Kim, Yoon Shin; Ko, Ung Ring [Hanyang Univ., Seoul (Korea, Republic of)

1996-12-31T23:59:59.000Z

408

Effects of ambient ozone on respiratory function and symptoms in Mexico City schoolchildren  

SciTech Connect (OSTI)

The effects of ambient ozone (O3) on respiratory function and acute respiratory symptoms were evaluated in 143 7- to 9-yr-old schoolchildren followed longitudinally at 1- to 2-wk intervals over a period of 6 months at three schools in Pedregal, Mexico City. The maximum O3 level exceeded the World Health Organization guideline of 80 ppb and the U.S. standard of 120 ppb in every week. For an increase from lowest to highest in the mean O3 level during the 48 hr before spirometry (53 ppb), logistic regression estimated relative odds of 1.7 for a child reporting cough/phlegm on the day of spirometry. For the full population, the mean O3 level during the hour before spirometry, not adjusted for temperature and humidity, predicted a significant decrement in FVC but not in FEV1 or FEF25-75. In contrast, the mean O3 level during the previous 24-, 48-, and 168-h periods predicted significant decrements in FEV1 and FEF25-75 but not in FVC. Ozone was consistently associated with a greater decrement in lung function for the 15 children with chronic phlegm as compared with the children without chronic cough, chronic phlegm, or wheeze. Ozone in the previous 24-, 48-, and 168-h periods predicted decrements in FEV1 for children of mothers who were current or former smokers, but not for children of mothers who were never smokers. Many of these effects were reduced in multiple regression analyses including temperature and humidity, as temperature and O3 were highly correlated.

Castillejos, M.; Gold, D.R.; Dockery, D.; Tosteson, T.; Baum, T.; Speizer, F.E. (Universidad Autonoma Metropolitana-X, Mexico City, (Mexico))

1992-02-01T23:59:59.000Z

409

Nonlinear GARCH model and 1/f noise  

E-Print Network [OSTI]

Auto-regressive conditionally heteroskedastic (ARCH) family models are still used, by practitioners in business and economic policy making, as a conditional volatility forecasting models. Furthermore ARCH models still are attracting an interest of the researchers. In this contribution we consider the well known GARCH(1,1) process and its nonlinear modifications, reminiscent of NGARCH model. We investigate the possibility to reproduce power law statistics, probability density function and power spectral density, using ARCH family models. For this purpose we derive stochastic differential equations from the GARCH processes in consideration. We find the obtained equations to be similar to a general class of stochastic differential equations known to reproduce power law statistics. We show that linear GARCH(1,1) process has power law distribution, but its power spectral density is Brownian noise-like. However, the nonlinear modifications exhibit both power law distribution and power spectral density of the power ...

Kononovicius, Aleksejus

2014-01-01T23:59:59.000Z

410

Quantum-noise quenching in atomic tweezers  

SciTech Connect (OSTI)

The efficiency of extracting single atoms or molecules from an ultracold bosonic reservoir is theoretically investigated for a protocol based on lasers, coupling the hyperfine state in which the atoms form a condensate to another stable state, in which the atom experiences a tight potential in the regime of collisional blockade, the quantum tweezers. The transfer efficiency into the single-atom ground state of the tight trap is fundamentally limited by the collective modes of the condensate, which are thermally and dynamically excited. The noise due to these excitations can be quenched for sufficiently long laser pulses, thereby achieving high efficiencies. These results show that this protocol can be applied to initializing a quantum register based on tweezer traps for neutral atoms.

Zippilli, Stefano [Departament de Fisica, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Spain); Theoretische Physik, Universitaet des Saarlandes, D-66041 Saarbruecken (Germany); Fachbereich Physik and Research Center OPTIMAS, Technische Universitaet Kaiserslautern, D-67663 Kaiserslautern (Germany); Mohring, Bernd; Schleich, Wolfgang [Institut fuer Quantenphysik, Universitaet Ulm, D-89081 Ulm (Germany); Lutz, Eric [Department of Physics, University of Augsburg, D-86135 Augsburg (Germany); Morigi, Giovanna [Departament de Fisica, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Spain); Theoretische Physik, Universitaet des Saarlandes, D-66041 Saarbruecken (Germany)

2011-05-15T23:59:59.000Z

411

Quantum-noise quenching in atomic tweezers  

E-Print Network [OSTI]

The efficiency of extracting single atoms or molecules from an ultracold bosonic reservoir is theoretically investigated for a protocol based on lasers, coupling the hyperfine state in which the atoms form a condensate to another stable state, in which the atom experiences a tight potential in the regime of collisional blockade, the quantum tweezers. The transfer efficiency into the single-atom ground state of the tight trap is fundamentally limited by the collective modes of the condensate, which are thermally and dynamically excited. The noise due to these excitations can be quenched for sufficiently long laser pulses, thereby achieving high efficiencies. These results show that this protocol can be applied for initializing a quantum register based on tweezer traps for neutral atoms.

Stefano Zippilli; Bernd Mohring; Eric Lutz; Giovanna Morigi; Wolfgang Schleich

2011-04-15T23:59:59.000Z

412

Using phase information to enhance speckle noise reduction in the ultrasonic NDE of coarse grain materials  

SciTech Connect (OSTI)

Materials with a coarse grain structure are becoming increasingly prevalent in industry due to their resilience to stress and corrosion. These materials are difficult to inspect with ultrasound because reflections from the grains lead to high noise levels which hinder the echoes of interest. Spatially Averaged Sub-Aperture Correlation Imaging (SASACI) is an advanced array beamforming technique that uses the cross-correlation between images from array sub-apertures to generate an image weighting matrix, in order to reduce noise levels. This paper presents a method inspired by SASACI to further improve imaging using phase information to refine focusing and reduce noise. A-scans from adjacent array elements are cross-correlated using both signal amplitude and phase to refine delay laws and minimize phase aberration. The phase-based and amplitude-based corrected images are used as inputs to a two-dimensional cross-correlation algorithm that will output a weighting matrix that can be applied to any conventional image. This approach was validated experimentally using a 5MHz array a coarse grained Inconel 625 step wedge, and compared to the Total Focusing Method (TFM). Initial results have seen SNR improvements of over 20dB compared to TFM, and a resolution that is much higher.

Lardner, Timothy; Gachagan, Anthony [Centre for Ultrasonic Engineering, University of Strathclyde, Glasgow, G1 1XW (United Kingdom); Li, Minghui [School of Engineering, University of Glasgow, Glasgow, G12 8QQ (United Kingdom)

2014-02-18T23:59:59.000Z

413

Filtered noise field signals for mass-selective accumulation of externally formed ions in a quadrupole ion trap  

SciTech Connect (OSTI)

A new wideband resonance excitation technique, termed a filtered noise field (FNF), is demonstrated for selective accumulation of externally formed ions in the rf quadrupole ion trap. Data obtained for detection of trinitrotoluene (TNT) and black powder vapors in ambient air, via atmospheric sampling glow discharge ionization (ASGDI), indicate that a notch-filtered FNF signal applied to the endcap electrodes can prevent accumulation of matrix ions without adversely affecting the ion injection efficiency of analyte species. Consequently, analyte signal enhancement can be realized via extended ion accumulation times even though unwanted ions are present in overwhelming abundance. The TNT molecular anion signal obtained following a 1-s injection period is a factor of approximately 8 greater than that seen without the FNF; S[sub 2][sup [minus

Goeringer, D.E.; Asano, K.G.; McLuckey, S.A. (Oak Ridge National Lab., TN (United States)); Hoekman, D. (Teledyne Electronic Technologies, Mountain View, CA (United States)); Stiller, S.W. (Hitachi Instruments, Inc., San Jose, CA (United States))

1994-02-01T23:59:59.000Z

414

Physical properties of ambient and laboratory-generated secondary organic aerosol  

E-Print Network [OSTI]

with condensed phase diffusion rates that are fast enough to maintain equilibrium with the gas phase [Pankow on small sample sizes with little intercomparison across ambient samples, and only a few studies [Virtanen et al., 2010; Vaden et al., 2011] compared laboratory and ambient samples. An investigation

Nizkorodov, Sergey

415

Ambient-RF-Energy-Harvesting Sensor Node with Capacitor-Leakage-Aware Duty Cycle Control  

E-Print Network [OSTI]

Ambient-RF-Energy-Harvesting Sensor Node with Capacitor-Leakage-Aware Duty Cycle Control Ryo (WSN) that are solely powered by ambient RF power. Different from all other energy harvesting WSN for an energy storage in the energy harvesting system because of its efficient charge and discharge performance

Tentzeris, Manos

416

Influence of ambient gas on the temperature and density of laser produced carbon plasma  

E-Print Network [OSTI]

; accepted for publication 11 November 1997 The effect of ambient gas on the dynamics of the plasma generated In moderate or high pressures, a blast wave model is found to describe accurately the plume propagation the maximum plume length with considerable accuracy.7,13 In this letter we report the effect of ambient

Harilal, S. S.

417

Abstract--This paper presents ambient mechanical vibrations as an alternative source for energy harvesting, especially  

E-Print Network [OSTI]

Abstract--This paper presents ambient mechanical vibrations as an alternative source for energy harvesting, especially beneficial where alternatives such as light, wind, biomass and thermal energy are limited, e.g., powering underground sensors. Transduction of ambient kinetic energy, e.g., the vibrations

Kumar, Ratnesh

418

Fermi Surface of Uranium at Ambient Pressure Gregory S. Boebinger, National High Magnetic Field Laboratory  

E-Print Network [OSTI]

Fermi Surface of ­Uranium at Ambient Pressure Gregory S. Boebinger, National High Magnetic Field Laboratory DMR-Award 0654118 DC Field Facility User Program The fermi surface of ­Uranium has been measured surface of alpha-uranium at ambient pressure, Phys. Rev. B Rapid Commun., 80, 241101 (2009). B//c-axis B

Weston, Ken

419

Internal structure and expansion dynamics of laser ablation plumes into ambient gases  

E-Print Network [OSTI]

Internal structure and expansion dynamics of laser ablation plumes into ambient gases S. S. Harilal 13 December 2002 The effect of ambient gas on the expansion dynamics of the plasma generated by laser together with time resolved emission diagnostics, a triple structure of the plume was observed

Harilal, S. S.

420

INTRODUCTION Energy harvesting is the transformation of ambient energy present in  

E-Print Network [OSTI]

into electrical energy. This energy is derived from different external sources such as solar power, thermal energyINTRODUCTION Energy harvesting is the transformation of ambient energy present in the environment, wind energy, salinity gradient and kinetic energy. Harvesting energy from ambient vibration has

Sóbester, András

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Laser-plasma diamagnetism in the presence of an ambient magnetized plasma  

E-Print Network [OSTI]

Laser-plasma diamagnetism in the presence of an ambient magnetized plasma M. VanZeelanda) and W cavity created by a dense laser-produced plasma initially, nlpp /n0 1) expanding into an ambient magnetized background plasma (n0 2 1012 cm 3 ) capable of supporting Alfve´n waves. The experiments

California at Los Angles, University of

422

Optimal control of aeroacoustic noise generated by cylinder vortex interaction  

E-Print Network [OSTI]

of the blade resulting in a strong dipole type acoustic source. The noise generated by BVI is particularly severe, leading to environmental noise pollution in commercial applications and increased observability the fluid dynamics and acoustic mechanisms that result from BVI as well as to validate predictive techniques

Heinkenschloss, Matthias

423

Trailing Edge Noise Model Applied to Wind Turbine Airfoils  

E-Print Network [OSTI]

flows, as well as the acoustic waves, using Computational Fluid Dynamics have become affordable thanksTrailing Edge Noise Model Applied to Wind Turbine Airfoils Franck Bertagnolio Risø-R-1633(EN) Risø Bertagnolio Title: Trailing Edge Noise Model Applied to Wind Turbine Airfoils Department: Wind Energy

424

Noise properties of mutually sustained microwave-optoelectronic oscillator pair  

E-Print Network [OSTI]

Noise properties of mutually sustained microwave-optoelectronic oscillator pair E. Shumakher and G microwave-optoelectronic oscillator pair are described. The two oscillators have different spectral purities and exhibits low phase noise and highly suppressed spurious modes. Optoelectronic oscillators are employed

Eisenstein, Gadi

425

Brief Communication Channel Noise is Essential for Perithreshold Oscillations in  

E-Print Network [OSTI]

Brief Communication Channel Noise is Essential for Perithreshold Oscillations in Entorhinal by the stochastic flicker of voltage-gated ion channels, can be a major contributor to electrical membrane noise of persistent Na channels is necessary for the existence of slow perithreshold oscillations that characterize

Dorval II, Alan D. "Chuck"

426

Improved Signal-to-Noise Ratio Estimation for Speech Enhancement  

E-Print Network [OSTI]

1 Improved Signal-to-Noise Ratio Estimation for Speech Enhancement Cyril Plapous, Member, IEEE speech enhancement in noisy environments. State-of- the-art short-time noise reduction techniques reduction techniques, includ- ing TSNR, introduce harmonic distortion in enhanced speech because

Paris-Sud XI, Université de

427

SPEECH ENHANCEMENT FOR NOISE-ROBUST SPEECH RECOGNITION  

E-Print Network [OSTI]

SPEECH ENHANCEMENT FOR NOISE-ROBUST SPEECH RECOGNITION Vikramjit Mitra and Carol Y. Espy-Wilson Speech Communication Lab SCL Introduction Propose an adaptive speech enhancement technique. Detects SNR-robust Speech Recognition Speech Enhancement Noise robust automated transcription Corpus `Speech in Speech

Shapiro, Benjamin

428

Coherent Quantum-Noise Cancellation for Optomechanical Sensors  

E-Print Network [OSTI]

Using a flowchart representation of quantum optomechanical dynamics, we design coherent quantum-noise-cancellation schemes that can eliminate the back-action noise induced by radiation pressure at all frequencies and thus overcome the standard quantum limit of force sensing. The proposed schemes can be regarded as novel examples of coherent feedforward quantum control.

Mankei Tsang; Carlton M. Caves

2010-08-17T23:59:59.000Z

429

Noise source identification techniques: simple to advanced applications  

E-Print Network [OSTI]

required. Practical application examples ranging from hearing aids to wind turbines are presented to optimise the noise emission from a wide range of products including vehicles, household goods and windNoise source identification techniques: simple to advanced applications K.B. Ginn and K. Haddad Br

Paris-Sud XI, Université de

430

White noise distribution theory for the Fermion system  

E-Print Network [OSTI]

In this paper, we give the white noise calculus for the Fermion system and prove the Fock expansion. Each continuous linear operator on Fermionic white noise functionals is uniquely represented by the series of integral kernel operators. This series is called the Fock expansion.

Yoshihito Shimada

2005-12-09T23:59:59.000Z

431

A Low Noise Readout Circuit for Integrated Electrochemical Biosensor Arrays  

E-Print Network [OSTI]

A Low Noise Readout Circuit for Integrated Electrochemical Biosensor Arrays Jichun Zhang, Nicholas 48823, USA {zhangjic, tromblyn, mason}@egr.msu.edu Abstract This paper presents a low noise electrochemical interface circuit that is tuned to the needs of protein-based biosensor arrays and compatible

Mason, Andrew

432

CALCULATION OF THE NEUTRON NOISE INDUCED BY SHELL-MODE  

E-Print Network [OSTI]

CALCULATION OF THE NEUTRON NOISE INDUCED BY SHELL-MODE FISSION REACTORS CORE-BARREL VIBRATIONS-REGION SLAB REACTOR MODEL CARL SUNDE,* CHRISTOPHE DEMAZI�RE, and IMRE PÁZSIT Chalmers University of Technology for Publication October 12, 2005 The subject of this paper is the calculation of the in-core neutron noise induced

Demazière, Christophe

433

Development of a 2-D 2-group neutron noise simulator  

E-Print Network [OSTI]

. This simulator calculates both the direct and the adjoint reactor transfer function between a stat- ionary noise applications. Consequently, the calculation of the dynamic reactor transfer function, i.e. the neutron noise demonstrated that the calculation of the dynamic reactor transfer function was possible mainly by modifying

Demazière, Christophe

434

The Theta Laser A Low Noise Chirped Pulse Laser  

E-Print Network [OSTI]

The Theta Laser A Low Noise Chirped Pulse Laser Dimitrios Mandridis dmandrid@creol.ucf.edu April 29, 2011 CREOL Affiliates Day 2011 #12;2 Objective: Frequency Swept (FM) Mode-locked Laser · Develop a frequency swept laser, · linear f-sweep, · uniform-intensity, · low noise, · with long-term stability

Van Stryland, Eric

435

Modeling of combustion noise spectrum from turbulent premixed flames  

E-Print Network [OSTI]

Modeling of combustion noise spectrum from turbulent premixed flames Y. Liu, A. P. Dowling, T. D, Nantes, France 2321 #12;Turbulent combustion processes generate sound radiation due to temporal changes, this temporal correlation and its role in the modeling of combustion noise spectrum are studied by analyzing

Paris-Sud XI, Université de

436

Low frequency noise from MW wind turbines --mechanisms of generation  

E-Print Network [OSTI]

Low frequency noise from MW wind turbines -- mechanisms of generation and its modeling Helge MW wind turbines -- mechanisms of generation and its modeling Department: Department of Wind Energy turbine has been simulated with a noise prediction model from NASA in US. Running the model

437

Impacts of Western Area Power Administration`s power marketing alternatives on air quality and noise  

SciTech Connect (OSTI)

The Western Area Power Administration, which is responsible for marketing electricity produced at the hydroelectric power-generating facilities operated by the Bureau of Reclamation on the Upper Colorado River, has proposed changes in the levels of its commitment (sales) of long-term firm capacity and energy to its customers. This report describes (1) the existing conditions of air resources (climate and meteorology, ambient air quality, and acoustic environment) of the region potentially affected by the proposed action and (2) the methodology used and the results of analyses conducted to assess the potential impacts on air resources of the proposed action and the commitment-level alternatives. Analyses were performed for the potential impacts of both commitment-level alternatives and supply options, which include combinations of electric power purchases and different operational scenarios of the hydroelectric power-generating facilities.

Chun, K.C.; Chang, Y.S.; Rabchuk, J.A.

1995-05-01T23:59:59.000Z

438

Noise and microresonance of critical current in Josephson junction induced by Kondo trap states  

E-Print Network [OSTI]

We analyze the impact of trap states in the oxide layer of a superconducting tunnel junctions, on the fluctuation of the Josephson critical current, thus on coherence in superconducting qubits. Two mechanisms are usually considered: the current blockage due to repulsion at the occupied trap states, and the noise from electrons hopping across a trap. We extend previous studies of noninteracting traps to the case where the traps have on-site electron repulsion inside one ballistic channel. The repulsion not only allows the appropriate temperature dependence of 1/f noise, but also is a control to the coupling between the computational qubit and the spurious two-level systems inside the oxide dielectric. We use second order perturbation theory which allows to obtain analytical formulae for the interacting bound states and spectral weights, limited to small and intermediate repulsions. Remarkably, it still reproduces the main features of the model as identified from the Numerical Renormalization Group. We present ...

Ansari, Mohammad H

2011-01-01T23:59:59.000Z

439

Internal noise driven generalized Langevin equation from a nonlocal continuum model  

E-Print Network [OSTI]

Starting with a micropolar formulation, known to account for nonlocal microstructural effects at the continuum level, a generalized Langevin equation (GLE) for a particle, describing the predominant motion of a localized region through a single displacement degree-of-freedom (DOF), is derived. The GLE features a memory dependent multiplicative or internal noise, which appears upon recognising that the micro-rotation variables possess randomness owing to an uncertainty principle. Unlike its classical version, the new GLE qualitatively reproduces the experimentally measured fluctuations in the steady-state mean square displacement of scattering centers in a polyvinyl alcohol slab. The origin of the fluctuations is traced to nonlocal spatial interactions within the continuum. A constraint equation, similar to a fluctuation dissipation theorem (FDT), is shown to statistically relate the internal noise to the other parameters in the GLE.

Saikat Sarkar; Shubhankar Roy Chowdhury; Debasish Roy; Ram Mohan Vasu

2015-03-10T23:59:59.000Z

440

ANALYSIS OF AN MTC NOISE MEASUREMENT PERFORMED IN RINGHALS-2 USING GAMMA-  

E-Print Network [OSTI]

ANALYSIS OF AN MTC NOISE MEASUREMENT PERFORMED IN RINGHALS-2 USING GAMMA- THERMOMETERS AND IN-averaged temperature noise was then used to estimate the MTC by noise analysis, via a new MTC noise estimator-thermometer. This shows that the main reason of the MTC underestimation by noise analysis in all the experimental work

Demazière, Christophe

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Indirect Combustion Noise: Experimental Investigation of the Vortex Sound Generation in a Choked  

E-Print Network [OSTI]

Indirect Combustion Noise: Experimental Investigation of the Vortex Sound Generation in a Choked-27 April 2012, Nantes, France 2315 #12;Combustion noise in gas turbines consists of direct noise related to the unsteady combustion process itself and indirect noise. As known, indirect noise is produced when entropy

Paris-Sud XI, Université de

442

11.1 Introduction Noise (a spontaneous fluctuation in current or in voltage) is generated in all semiconductor devices.  

E-Print Network [OSTI]

The thermal noise is proportional to the frequency bandwidth f. It can be represented by the voltage sourceTf. The noise power density, dPn/df = kT, is independent of frequency. Thus, the thermal noise is the white and reliability. The most important sources of noise are thermal noise, shot noise, generation-recombination noise

Wilamowski, Bogdan Maciej

443

Numerical tools applied to power reactor noise analysis  

SciTech Connect (OSTI)

In this paper, the development of numerical tools allowing the determination of the neutron noise in power reactors is reported. These tools give the space-dependence of the fluctuations of the neutron flux induced by fluctuating properties of the medium in the 2-group diffusion approximation and in a 2-dimensional representation of heterogeneous systems. Some applications of these tools to power reactor noise analysis are then described. These applications include the unfolding of the noise source from the resulting neutron noise measured at a few discrete locations throughout the core, the study of the space-dependence of the Decay Ratio in Boiling Water Reactors, the noise-based estimation of the Moderator Temperature Coefficient of reactivity in Pressurized Water Reactors, the modeling of shell-mode core barrel vibrations in Pressurized Water Reactors, and the investigation of the validity of the point-kinetic approximation in subcritical systems. (authors)

Demaziere, C.; Pazsit, I. [Chalmers Univ. of Technology, Dept. of Nuclear Engineering, SE-412 96 Goeteborg (Sweden)

2006-07-01T23:59:59.000Z

444

Waveguide integrated low noise NbTiN nanowire single-photon detectors with milli-Hz dark count rate  

E-Print Network [OSTI]

Superconducting nanowire single-photon detectors are an ideal match for integrated quantum photonic circuits due to their high detection efficiency for telecom wavelength photons. Quantum optical technology also requires single-photon detection with low dark count rate and high timing accuracy. Here we present very low noise superconducting nanowire single-photon detectors based on NbTiN thin films patterned directly on top of Si3N4 waveguides. We systematically investigate a large variety of detector designs and characterize their detection noise performance. Milli-Hz dark count rates are demonstrated over the entire operating range of the nanowire detectors which also feature low timing jitter. The ultra-low dark count rate, in combination with the high detection efficiency inherent to our traveling wave detector geometry, gives rise to a measured noise equivalent power at the 10^(-20) W/Hz^(1/2) level.

Carsten Schuck; Wolfram H. P. Pernice; Hong X. Tang

2013-06-02T23:59:59.000Z

445

Photoacoustic optical properties at UV, VIS, and near IR wavelengths for laboratory generated and winter time ambient urban aerosols  

SciTech Connect (OSTI)

We present the laboratory and ambient photoacoustic (PA) measurement of aerosol light absorption coefficients at ultraviolet wavelength (i.e., 355 nm) and compare with measurements at 405, 532, 870, and 1047 nm. Simultaneous measurements of aerosol light scattering coefficients were achieved by the integrating reciprocal nephelometer within the PA's acoustic resonator. Absorption and scattering measurements were carried out for various laboratory generated aerosols, including salt, incense, and kerosene soot to evaluate the instrument calibration and gain insight on the spectral dependence of aerosol light absorption and scattering. Ambient measurements were obtained in Reno, Nevada, between 18 December 2009 and 18 January 2010. The measurement period included days with and without strong ground level temperature inversions, corresponding to highly polluted (freshly emitted aerosols) and relatively clean (aged aerosols) conditions. Particulate matter (PM) concentrations were measured and analyzed with other tracers of traffic emissions. The temperature inversion episodes caused very high concentration of PM{sub 2.5} and PM{sub 10} (particulate matter with aerodynamic diameters less than 2.5 {mu}m and 10 {mu}m, respectively) and gaseous pollutants: carbon monoxide (CO), nitric oxide (NO), and nitrogen dioxide (NO{sub 2}). The diurnal change of absorption and scattering coefficients during the polluted (inversion) days increased approximately by a factor of two for all wavelengths compared to the clean days. The spectral variation in aerosol absorption coefficients indicated a significant amount of absorbing aerosol from traffic emissions and residential wood burning. The analysis of single scattering albedo (SSA), Angstrom exponent of absorption (AEA), and Angstrom exponent of scattering (AES) for clean and polluted days provides evidences that the aerosol aging and coating process is suppressed by strong temperature inversion under cloudy conditions. In general, measured UV absorption coefficients were found to be much larger for biomass burning aerosol than for typical ambient aerosols.

Gyawali, Madhu S.; Arnott, W. Patrick; Zaveri, Rahul A.; Song, Chen; Moosmuller, H.; Liu, Li; Mishchenko, M.; Chen, L-W A.; Green, M.; Watson, J. G.; Chow, J. C.

2012-03-08T23:59:59.000Z

446

Laser ablated copper plasmas in liquid and gas ambient  

SciTech Connect (OSTI)

The dynamics of copper ablated plasma plumes generated using laser ablation of copper targets in both liquid (de-ionized water) and gas (air) ambients is reported. Using time and space resolved visible emission spectroscopy (450-650 nm), the plasma plumes parameters are investigated. The electron density (n{sub e}) determined using Stark broadening of the Cu I (3d{sup 10}4d{sup 1} {sup 2}D{sub 3/2}-3d{sup 10}4p{sup 1} {sup 2}P{sub 3/2} at 521.8 nm) line is estimated and compared for both plasma plumes. The electron temperature (T{sub e}) was estimated using the relative line emission intensities of the neutral copper transitions. Field emission scanning electron microscopy and energy dispersive x-ray spectral analysis of the ablated copper surface indicated abundance of spherical nanoparticles in liquid while those in air are amalgamates of irregular shapes. The nanoparticles suspended in the confining liquid form aggregates and exhibit a surface plasmon resonance at ?590 nm.

Kumar, Bhupesh; Thareja, Raj K. [Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208 016 (India)] [Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208 016 (India)

2013-05-15T23:59:59.000Z

447

The influence of high intensity white noise of free 17-hydroxycorticosteroid levels in dogs  

E-Print Network [OSTI]

, G, , and Foa, P. P. : Endocrine and Metabolic Response of Dogs to Whole-Body Vibration. AMRL-TDR-64-54, USAF, Biophysics Laboratory, AMRL, Wright-Patterson Air Force Base, Ohio, (June, 1964). 9. Bowman, R. E. : Ultramicro Method of Noncon.... , Bond, J. , and Webb, J. C. : Effects of Aircraft Sound on Swine. WADC-TR-59-200, USAF, Wright Air Development Center, Wright-Patterson Air Force Base, Ohio, (Aug. , 1959). 39. Zimmermann, W. : Bine Farbreaktion de Sexualhormone und ihre Anwendung...

Thalken, Charles Edward

1970-01-01T23:59:59.000Z

448

E-Print Network 3.0 - absolute johnson noise Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

johnson noise Search Powered by Explorit Topic List Advanced Search Sample search results for: absolute johnson noise Page: << < 1 2 3 4 5 > >> 1 JOHNSON NOISE THERMOMETRY USING A...

449

A Policy Management System for Ambient Networks K. Jean and A. Galis, {kjean, agalis}@ee.ucl.ac.uk,  

E-Print Network [OSTI]

A Policy Management System for Ambient Networks K. Jean and A. Galis, {kjean, agalis of Ambient Networks necessitate a new dynamic, distributed policy management system. Existing policy management systems do not provide the required support for mobility, dynamicity and heterogeneity

Haddadi, Hamed

450

Interpolating Vancouver's Daily Ambient PM10 Field Li Sun James V. Zidek Nhu D. Le Haluk Ozkaynak  

E-Print Network [OSTI]

Interpolating Vancouver's Daily Ambient PM10 Field Li Sun James V. Zidek Nhu D. Le Haluk Ozkaynak the Center's primary funding. #12;Interpolating Vancouver's Daily Ambient PM10 Field Li Sun1 , James V Zidek1

Washington at Seattle, University of

451

Quantum Noise as an Entanglement Meter  

E-Print Network [OSTI]

Entanglement entropy, which is a measure of quantum correlations between separate parts of a many-body system, has emerged recently as a fundamental quantity in broad areas of theoretical physics, from cosmology and field theory to condensed matter theory and quantum information. The universal appeal of the entanglement entropy concept is related, in part, to the fact that it is defined solely in terms of the many-body density matrix of the system, with no relation to any particular observables. However, for the same reason, it has not been clear how to access this quantity experimentally. Here we derive a universal relation between entanglement entropy and the fluctuations of current flowing through a quantum point contact (QPC) which opens a way to perform a direct measurement of entanglement entropy. In particular, by utilizing space-time duality of 1d systems, we relate electric noise generated by opening and closing the QPC periodically in time with the seminal S = 1/3 log L prediction of conformal field theory.

Israel Klich; Leonid Levitov

2008-06-11T23:59:59.000Z

452

Reference Directions for a Sound Level Meter , M.R. Vaabenb  

E-Print Network [OSTI]

0 and 90 Reference Directions for a Sound Level Meter E. Aflaloa , M.R. Vaabenb , P. Pourtaua , D the requirements of the IEC 61672 standard on sound level meters taking into account noise incidence from level meter must be pointed at the source according to standard IEC 60651. The purpose of the paper

Paris-Sud XI, Université de

453

The world of quantum noise and the fundamental output process  

E-Print Network [OSTI]

A stationary theory of quantum stochastic processes of second order is outlined. It includes KMS processes in wide sense like the equilibrium finite temperature quantum noise given by the Planck's spectral formula. It is shown that for each stationary noise there exists a natural output process output process which is identical to the noise in the infinite temperature limit, and flipping with the noise if the time is reversed at finite temperature. A canonical Hilbert space representation of the quantum noise and the fundamental output process is established and a decomposition of their spectra is found. A brief explanation of quantum stochastic integration with respect to the input-output processes is given using only correlation functions. This provides a mathematical foundation for linear stationary filtering transformations of quantum stochastic processes. It is proved that the colored quantum stationary noise and its time-reversed version can be obtained in the second order theory by a linear nonadapted filtering of the standard vacuum noise uniquely defined by the canonical creation and annihilation operators on the spectrum of the input-output pair.

V. P. Belavkin; O. Hirota; R. Hudson

2005-10-04T23:59:59.000Z

454

PIANO DI RIQUALIFICAZIONE AMBIENTALE E PAESAGGISTICA DEL TERMOVALORIZZATORE DI DESIO TERMOVALORIZZATORE DI DESIO (MI) BRIANZA ENERGIA E AMBIENTE SPA  

E-Print Network [OSTI]

TERMOVALORIZZATORE DI DESIO (MI) ­ BRIANZA ENERGIA E AMBIENTE SPA Impianto di costruito negli anni '70 per lo

Columbia University

455

E-Print Network 3.0 - aircraft noise Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

noise impacts for different aircraft types and different numbers of operations. b... Abatement Act (1973) Aviation Safety and Noise Abatement Act ... Source: George Mason...

456

E-Print Network 3.0 - advanced noise control Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

speech in noise... speech in noise for speech synthesis are described, in addition to data and results from Source: Black, Alan W - Language Technologies Institute, School of...

457

Numerical Investigation of Flow Induced Noise in a Simplified HVAC Duct with OpenFOAM.  

E-Print Network [OSTI]

?? Due to the growing demand for comfort, the noise generated by HVAC components should be considered by the designers. Flow induced noise is one… (more)

Wang, Cong

2013-01-01T23:59:59.000Z

458

E-Print Network 3.0 - acoustic noise reduction Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Functions for Noise Suppression in Cochlear Implants Summary: of the acoustic-to-electric mapping function on speech recognition in noise by cochlear implant listeners....

459

Acoustical and Noise Control Criteria and Guidelines for Building Design and Operations  

E-Print Network [OSTI]

Noise, vibration and acoustical design, construction, commissioning and operation practices influence building cost, efficiency, performance and effectiveness. Parameters for structural vibration, building systems noise, acoustics and environmental...

Evans, J. B.; Himmel, C. N.

460

E-Print Network 3.0 - aerodynamic noise Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Boston University Collection: Engineering 5 CURVE FlTTlNG PROCEDURES FOR HIGH SPEED TRAINS Summary: - an aerodynamic noise which predominates at high speeds. Each noise...

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

E-Print Network 3.0 - aerodynamic noise reduction Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Melbourne Collection: Engineering 3 CURVE FlTTlNG PROCEDURES FOR HIGH SPEED TRAINS Summary: - an aerodynamic noise which predominates at high speeds. Each noise...

462

Effect of shockwave-induced density jump on laser plasma interactions in low-pressure ambient air  

E-Print Network [OSTI]

1 Effect of shockwave-induced density jump on laser plasma interactions in low-pressure ambient air jump were investigated in low- pressure ambient air during the laser pulse using an optical interferometer. A tiny shockwave-induced density jump could be observed clearly in ambient air with pressure

Tillack, Mark

463

We the Citizens, English translation of chapter 7 of Paesaggio, Costituzione, cemento: la battaglia per l'ambiente contro il degrado civile (Einaudi, 2010)  

E-Print Network [OSTI]

Costituzione cemento: la battaglia per l’ambiente contro ilCostituzione cemento. La battaglia per l’ambiente contro ilCostituzione cemento: La battaglia per l’ambiente contro il

Settis, Salvatore

2011-01-01T23:59:59.000Z

464

Quantum noise of non-ideal Sagnac speed meter interferometer with asymmetries  

E-Print Network [OSTI]

The speed meter concept has been identified as a technique that can potentially provide laser-interferometric measurements at a sensitivity level which surpasses the Standard Quantum Limit (SQL) over a broad frequency range. As with other sub-SQL measurement techniques, losses play a central role in speed meter interferometers and they ultimately determine the quantum noise limited sensitivity that can be achieved. So far in the literature, the quantum noise limited sensitivity has only been derived for lossless or lossy cases using certain approximations (for instance that the arm cavity round trip loss is small compared to the arm cavity mirror transmission). In this article we present a generalised, analytical treatment of losses in speed meters that allows accurate calculation of the quantum noise limited sensitivity of Sagnac speed meters with arm cavities. In addition, our analysis allows us to take into account potential imperfections in the interferometer such as an asymmetric beam splitter or differences of the reflectivities of the two arm cavity input mirrors. Finally,we use the examples of the proof-of-concept Sagnac speed meter currently under construction in Glasgow and a potential implementation of a Sagnac speed meter in the Einstein Telescope (ET) to illustrate how our findings affect Sagnac speed meters with meter- and kilometre-long baselines.

S. L. Danilishin; C. Graef; S. S. Leavey; J. Hennig; E. A. Houston; D. Pascucci; S. Steinlechner; J. Wright; S. Hild

2014-12-02T23:59:59.000Z

465

Upper Bounds on the Noise Threshold for Fault-tolerant Quantum Computing  

E-Print Network [OSTI]

We prove new upper bounds on the tolerable level of noise in a quantum circuit. We consider circuits consisting of unitary k-qubit gates each of whose input wires is subject to depolarizing noise of strength p, as well as arbitrary one-qubit gates that are essentially noise-free. We assume that the output of the circuit is the result of measuring some designated qubit in the final state. Our main result is that for p>1-\\Theta(1/\\sqrt{k}), the output of any such circuit of large enough depth is essentially independent of its input, thereby making the circuit useless. For the important special case of k=2, our bound is p>35.7%. Moreover, if the only allowed gate on more than one qubit is the two-qubit CNOT gate, then our bound becomes 29.3%. These bounds on p are notably better than previous bounds, yet are incomparable because of the somewhat different circuit model that we are using. Our main technique is the use of a Pauli basis decomposition, which we believe should lead to further progress in deriving such bounds.

Julia Kempe; Oded Regev; Falk Unger; Ronald de Wolf

2008-02-11T23:59:59.000Z

466

Classical noise assists the flow of quantum energy by `momentum rejuvenation'  

E-Print Network [OSTI]

An important challenge in quantum science is to fully understand the efficiency of energy flow in networks. Here we present a simple and intuitive explanation for the intriguing observation that optimally efficient networks are not purely quantum, but are assisted by some interaction with a `noisy' classical environment. By considering the system's dynamics in both the site-basis and the momentum-basis, we show that the effect of classical noise is to sustain a broad momentum distribution, countering the depletion of high mobility terms which occurs as energy exits from the network. This picture predicts that the optimal level of classical noise is reciprocally related to the linear dimension of the lattice; our numerical simulations verify this prediction to high accuracy for regular 1D and 2D networks over a range of sizes up to thousands of sites. This insight leads to the discovery that dramatic further improvements in performance occur when a driving field targets noise at the low mobility components.

Ying Li; Filippo Caruso; Erik Gauger; Simon C. Benjamin

2014-06-13T23:59:59.000Z

467

Low noise charge sensitive preamplifier DC stabilized without a physical resistor  

DOE Patents [OSTI]

The invention is a novel charge sensitive preamplifier (CSP) which has no resistor in parallel with the feedback capacitor. No resetting circuit is required to discharge the feedback capacitor. The DC stabilization of the preamplifier is obtained by means of a second feedback loop between the preamplifier output and the common base transistor of the input cascode. The input transistor of the preamplifier is a Junction Field Transistor (JFET) with the gate-source junction forward biased. The detector leakage current flows into this junction. This invention is concerned with a new circuit configuration for a charge sensitive preamplifier and a novel use of the input Field Effect Transistor of the CSP itself. In particular this invention, in addition to eliminating the feedback resistor, eliminates the need for external devices between the detector and the preamplifier, and it eliminates the need for external circuitry to sense the output voltage and reset the CSP. Furthermore, the noise level of the novel CSP is very low, comparable with the performance achieved with other solutions. Experimental tests prove that this configuration for the charge sensitive preamplifier permits an excellent noise performance at temperatures including room temperature. An equivalent noise charge of less than 20 electrons r.m.s. has been measured at room temperature by using a commercial JFET as input device of the preamplifier.

Bertuccio, Giuseppe (Brianza, IT); Rehak, Pavel (Patchogue, NY); Xi, Deming (Beijing, CN)

1994-09-13T23:59:59.000Z

468

Low noise charge sensitive preamplifier DC stabilized without a physical resistor  

DOE Patents [OSTI]

The invention is a novel charge sensitive preamplifier (CSP) which has no resistor in parallel with the feedback capacitor. No resetting circuit is required to discharge the feedback capacitor. The DC stabilization of the preamplifier is obtained by means of a second feedback loop between the preamplifier output and the common base transistor of the input cascode. The input transistor of the preamplifier is a Junction Field Transistor (JFET) with the gate-source junction forward biased. The detector leakage current flows into this junction. This invention is concerned with a new circuit configuration for a charge sensitive preamplifier and a novel use of the input Field Effect Transistor of the CSP itself. In particular this invention, in addition to eliminating the feedback resistor, eliminates the need for external devices between the detector and the preamplifier, and it eliminates the need for external circuitry to sense the output voltage and reset the CSP. Furthermore, the noise level of the novel CSP is very low, comparable with the performance achieved with other solutions. Experimental tests prove that this configuration for the charge sensitive preamplifier permits an excellent noise performance at temperatures including room temperature. An equivalent noise charge of less than 20 electrons r.m.s. has been measured at room temperature by using a commercial JFET as input device of the preamplifier. 6 figs.

Bertuccio, G.; Rehak, P.; Xi, D.

1994-09-13T23:59:59.000Z

469

CDIGO DIA HORA AULA CURSO TITULACION ASIGNATURA 2107002 16/06/2014 9:00 001 Aulario III 1 Grado en Ingeniera Ambiental Fsica I  

E-Print Network [OSTI]

3 Grado en Ingeniería Ambiental Evaluación del Impacto Ambiental 2107037 30/06/2014 9:00 107 Aulario Ingeniería Ambiental Física I 2107003 17/06/2014 9:00 003 Aulario III 1 Grado en Ingeniería Ambiental Grado en Ingeniería Ambiental Humanidades: Cultura, Medio Ambiente y Sociedad 2107005 20/06/2014 9

Rey Juan Carlos, Universidad

470

A diffraction integral based turbomachinery noise shielding method  

E-Print Network [OSTI]

A current research focus in subsonic aeronautics is the reduction of noise, emissions and fuel burn. The Silent Aircraft Initiative, NASA N+2 and N+3 projects are examples of recent efforts investigating innovative aircraft ...

Colas, Dorian Frederic Marie

2011-01-01T23:59:59.000Z

471

De-noised coding by lateral interactions Cornelius Weber  

E-Print Network [OSTI]

De-noised coding by lateral interactions Cornelius Weber Brain and Cognitive Science Dept(8):740-745 (1999). [2] C. Weber and K. Obermayer, Emergence of modularity within one sheet of intrinsically active

Weber, Cornelius

472

Hybrid wing-body aircraft noise and performance assessment  

E-Print Network [OSTI]

Hybrid wing-body aircraft noise generation and boundary layer ingestion (BLI) performance trends with increased fan face Mach number inlet designs are investigated. The presented topics are in support of the NASA subsonic ...

Weed, Philip Andrew

2010-01-01T23:59:59.000Z

473

Multiple phase estimation for arbitrary pure states under white noise  

E-Print Network [OSTI]

In any realistic quantum metrology scenarios, the ultimate precision in the estimation of parameters is limited not only by the so-called Heisenberg scaling, but also the environmental noise encountered by the underlying system. In the context of quantum estimation theory, it is of great significance to carefully evaluate the impact of a specific type of noise on the corresponding quantum Fisher information (QFI) or quantum Fisher information matrix (QFIM). Here we investigate the multiple phase estimation problem for a natural parametrization of arbitrary pure states under white noise. We obtain the explicit expression of the symmetric logarithmic derivative (SLD) and hence the analytical formula of QFIM. Moreover, the attainability of the quantum Cram\\'{e}r-Rao bound (QCRB) is confirmed by the commutability of SLDs and the optimal estimators are elucidated for the experimental purpose. These findings generalize previously known partial results and highlight the role of white noise in quantum metrology.

Yao Yao; Li Ge; Xing Xiao; Xiaoguang Wang; C. P. Sun

2014-09-08T23:59:59.000Z

474

Microjet based noise control of supersonic jets on carrier decks  

E-Print Network [OSTI]

The effectiveness of ground plane water microjet control on the noise generated by a supersonic, ideally expanded, Mach 1.5, impinging jet was determined. Using a converging-diverging nozzle with a design Mach number of ...

Ragaller, Paul Aaron

2014-01-01T23:59:59.000Z

475

The cost of noise reduction in commercial tilt rotor aircraft  

E-Print Network [OSTI]

The relationship between direct operating cost and departure noise annoyance was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt rotor aircraft designs to meet various ...

Faulkner, Henry B.

1974-01-01T23:59:59.000Z

476

The reduction of supersonic jet noise using pulsed microjet injection  

E-Print Network [OSTI]

This thesis is concerned with the active control of supersonic jet noise using pulsed microjet injection at the nozzle exit. Experimental investigations were carried out using this control method on an ideally expanded ...

Ragaller, Paul Aaron

2007-01-01T23:59:59.000Z

477

aircraft interior noise: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 OPTIMIZATION OF OPERATIONAL AIRCRAFT PARAMETERS REDUCING NOISE EMISSION Mathematics Websites...

478

aircraft noise effects: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of an order of magnitude and the corresponding lifetime of about seven decades. R. Yamapi; G. Filatrella 2014-06-24 93 Effects of noise on quantum error correction algorithms...

479

anthropogenic noise effects: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of an order of magnitude and the corresponding lifetime of about seven decades. R. Yamapi; G. Filatrella 2014-06-24 90 Effects of noise on quantum error correction algorithms...

480

Electronic noise in nanostructures: limitations and sensing applications  

E-Print Network [OSTI]

and their characteristic length is close to acoustical phonon wavelength. Moreover, because nanostructures include significantly fewer charge carriers than microscale structures, electronic noise in nanostructures is enhanced compared to microscale structures. Additionally...

Kim, Jong Un

2007-04-25T23:59:59.000Z

Note: This page contains sample records for the topic "ambient noise levels" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Mitigating timing noise in ADCs through digital post-processing  

E-Print Network [OSTI]

The accuracy of analog-to-digital converters (ADCs) is greatly affected by the uniformity of the times at which samples of the analog input signal are taken. The error in the sample times, known as jitter, or timing noise, ...

Weller, Daniel (Daniel Stuart)

2008-01-01T23:59:59.000Z

482

Structural thermal noise in gram-scale mirror oscillators  

E-Print Network [OSTI]

The thermal noise associated with mechanical dissipation is a ubiquitous limitation to the sensitivity of precision experiments ranging from frequency stabilization to gravitational wave interferometry. We report on the ...

Neben, Abraham Richard

483

3D Module Placement for Congestion and Power Noise Reduction  

E-Print Network [OSTI]

3D Module Placement for Congestion and Power Noise Reduction Jacob R. Minz School of ECE Georgia that copies are not made or distributed for profit or commercial advantage and that copies bear this notice

Lim, Sung Kyu

484

ALIGNMENT BETWEEN FLATTENED PROTOSTELLAR INFALL ENVELOPES AND AMBIENT MAGNETIC FIELDS  

SciTech Connect (OSTI)

We present 350 {mu}m polarization observations of four low-mass cores containing Class 0 protostars: L483, L1157, L1448-IRS2, and Serp-FIR1. This is the second paper in a larger survey aimed at testing magnetically regulated models for core-collapse. One key prediction of these models is that the mean magnetic field in a core should be aligned with the symmetry axis (minor axis) of the flattened young stellar object inner envelope (aka pseudodisk). Furthermore, the field should exhibit a pinched or hourglass-shaped morphology as gravity drags the field inward toward the central protostar. We combine our results for the four cores with results for three similar cores that were published in the first paper from our survey. An analysis of the 350 {mu}m polarization data for the seven cores yields evidence of a positive correlation between mean field direction and pseudodisk symmetry axis. Our rough estimate for the probability of obtaining by pure chance a correlation as strong as the one we found is about 5%. In addition, we combine together data for multiple cores to create a source-averaged magnetic field map having improved signal-to-noise ratio, and this map shows good agreement between mean field direction and pseudodisk axis (they are within 15 Degree-Sign ). We also see hints of a magnetic pinch in the source-averaged map. We conclude that core-scale magnetic fields appear to be strong enough to guide gas infall, as predicted by the magnetically regulated models. Finally, we find evidence of a positive correlation between core magnetic field direction and bipolar outflow axis.

Chapman, Nicholas L.; Matthews, Tristan G.; Novak, Giles [Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (United States); Davidson, Jacqueline A. [School of Physics, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009 (Australia); Goldsmith, Paul F. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, MS 264-782, Pasadena, CA 91109 (United States); Houde, Martin [Department of Physics and Astronomy, University of Western Ontario, London, ON (Canada); Kwon, Woojin; Looney, Leslie W. [Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801 (United States); Li Zhiyun [Astronomy Department, University of Virginia, Charlottesville, VA 22904 (United States); Matthews, Brenda [Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada); Peng Ruisheng [Caltech Submillimeter Observatory, 111 Nowelo Street, Hilo, HI 96720 (United States); Vaillancourt, John E. [SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center, MS 232-11, Moffett Field, CA 94035-0001 (United States); Volgenau, Nikolaus H. [California Institute of Technology, Owens Valley Radio Observatory, Big Pine, CA 93513 (United States)

2013-06-20T23:59:59.000Z

485

Environmental gravitational decoherence and a tensor noise model  

E-Print Network [OSTI]

We discuss decrease of coherence in a massive system due to the emission of gravitational waves. In particular we investigate environmental gravitational decoherence in the context of an interference experiment. The time-evolution of the reduced density matrix is solved analytically using the path-integral formalism. Furthermore, we study the impact of a tensor noise onto the coherence properties of massive systems. We discuss that a particular choice of tensor noise shows similarities to a mechanism proposed by Diosi and Penrose.

Suzuki, Fumika

2015-01-01T23:59:59.000Z

486

Environmental gravitational decoherence and a tensor noise model  

E-Print Network [OSTI]

We discuss decrease of coherence in a massive system due to the emission of gravitational waves. In particular we investigate environmental gravitational decoherence in the context of an interference experiment. The time-evolution of the reduced density matrix is solved analytically using the path-integral formalism. Furthermore, we study the impact of a tensor noise onto the coherence properties of massive systems. We discuss that a particular choice of tensor noise shows similarities to a mechanism proposed by Diosi and Penrose.

Fumika Suzuki; Friedemann Queisser

2015-02-04T23:59:59.000Z

487

Orthogonal jumps of wavefunction in white-noise potentials  

E-Print Network [OSTI]

We investigate the evolution of the quantum state for a free particle placed into a random external potential of white-noise type. The master equation for the density matrix is derived by means of path integral method. We propose an equivalent stochastic process where the wavefunction satisfies a nonlinear Schr\\"odinger equation except for random moments at which it shows orthogonal jumps. The relation of our work to the usual theory of quantum noise and damping is briefly discussed.

Lajos Diósi

2015-01-01T23:59:59.000Z

488

E-Print Network 3.0 - ambiental territorio urbano Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Magistrale Sede isc. Sede alt. Voto laurea Data nascita 1 783078 I-INGEGNERIA CIVILE MI CO 110 26091989 Summary: -INGEGNERIA PER L'AMBIENTE E IL TERRITORIO MI 110 06081988...

489

E-Print Network 3.0 - ao meio ambiente Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

meio ambiente Page: << < 1 2 3 4 5 > >> 1 Retirado de http:www.cfbio.gov.brlegislacao.php em 05052011. RESOLUO N 213, DE 20 DE MARO DE 2010. Summary: , percias,...

490

E-Print Network 3.0 - almacenadas al ambiente Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

sobre la necesidad o no de iniciar el trmite de evaluacin de... a evaluacin de impacto ambiental, al tiempo que se garantiza que tal evaluacin, de llevarse a cabo,...

491

E-Print Network 3.0 - ambiental proyecto central Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

pgina 47009, el cuadro correspondiente a "E-965(ii) JARABE DE MALTITOL", debe Summary: Impacto Ambiental de proyectos La disposicin final sptima de la Ley 342007, de 15 de...

492

E-Print Network 3.0 - ambiental por centelleo Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DEL ESTADO Nm. 73 Jueves 25 de marzo de 2010 Sec. I. Pg. 28590 Summary: de Evaluacin de Impacto Ambiental de proyectos, aprobado por el Real Decreto Legislativo 12008, de......

493

E-Print Network 3.0 - ambiental asociados con Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

26 S U M A R I O CARGAS DE HUNDIMIENTO POR PUNTA PARA PILOTES EN ROCA Summary: estudio de impacto ambiental y de la DIA. Con este fin se realiza un anlisis sobre la presencia de...

494

E-Print Network 3.0 - al humo ambiental Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

base: Gigabyte GA-880GA-UD3H (92 ) Procesador: Intel Core i5 2300 2.8Ghz (145... impacto ambiental Optimizacin de los recursos naturales Consistente ahorro de energa...

495

E-Print Network 3.0 - ambiente prehospitalario peruano Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

regionales. Los temas de discusin se centraron en el derecho a la tierra, en el impacto ambiental... se espera que hagan patria actuando en lnea con la poltica de...

496

E-Print Network 3.0 - ambiente solo-semente por Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DEL ESTADO Nm. 73 Jueves 25 de marzo de 2010 Sec. I. Pg. 28590 Summary: de Evaluacin de Impacto Ambiental de proyectos, aprobado por el Real Decreto Legislativo 12008, de......

497

E-Print Network 3.0 - ambiental por vapores Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

cuadro correspondiente a "E-965(ii) JARABE DE MALTITOL", debe Summary: de evaluacin de impacto ambiental.Tras una modificacin menor en el anexo I operada por la Ley 54......

498

E-Print Network 3.0 - ambiental causada por Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ecology 14 S U M A R I O CARGAS DE HUNDIMIENTO POR PUNTA PARA PILOTES EN ROCA Summary: de Impacto Ambiental (EIA) es el Real Decreto Legislativo1 130219862 (actualmente derogado)...

499

E-Print Network 3.0 - ambiental em corredores Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

13 5676 Sbado 19 mayo 2001 BOE nm. 120 B. OTROS ANUNCIOS OFICIALES Summary: mximo su impacto ambiental en lo que respecta al corredor M-607 y, por otro lado, compatibilizar...

500

E-Print Network 3.0 - ambiental por bacillus Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DEL ESTADO Nm. 73 Jueves 25 de marzo de 2010 Sec. I. Pg. 28590 Summary: de Evaluacin de Impacto Ambiental de proyectos, aprobado por el Real Decreto Legislativo 12008, de......