Sentences with phrase «measurement noise in»

Abstract: We present a simulation analysis of weak gravitational lensing flexion and shear measurement using shapelet decomposition, and identify differences between flexion and shear measurement noise in deep survey data.

Taking models of galaxies from the Hubble Space Telescope Ultra Deep Field (HUDF) and applying a correction for the HUDF point spread function we generate lensed simulations of deep, opti... ▽ More We present a simulation analysis of weak gravitational lensing flexion and shear measurement using shapelet decomposition, and identify differences between flexion and shear measurement noise in deep survey data.

Not exact matches

Some Town Board members found the early language confusing, arguing that the way it was phrased, if someone on Nassau Point in Cutchogue complained about noise coming from Greenport the measurement would be taken on the beach in Cutchogue.

Even statistical noise — or random variation in neutron measurement — would convey no data.

That pulls in extra noise and limits the sensitivity of our measurements,» explains Takeda.

The ability to control quantum noise could one day be used to improve the precision of very sensitive measurements, such as those obtained by LIGO, the Laser Interferometry Gravitational - wave Observatory, a Caltech - and - MIT - led project searching for signs of gravitational waves, ripples in the fabric of space - time.

Kensuke Kobayashi (Professor, Graduate School of Science, Osaka University) and Sadashige Matsuo (Assistant Professor, Graduate School of Engineering, The University of Tokyo), in cooperation with research groups led by Teruo Ono (Professor, Institute for Chemical Research, Kyoto University) and Kazuhito Tsukagoshi (Research Fellow, International Center for Materials Nanoarchitectonics, National Institute for Materials Science), produced graphene samples capable of forming p - n junctions by combining gate electrodes and performed precise measurements of current - fluctuation («shot noise») in the graphene p - n junction in the QH regime in the strong magnetic fields and at low temperatures.

The team carried out the measurements at the Low Noise Underground Laboratory (CNRS / Université de Nice / Université d'Avignon), located in a former nuclear missile firing station on the Plateau d'Albion in southern France.

The measured uncertainty in location capability was 16 meters, much higher than the target of 3 meters, but this metric can be improved through future noise suppression techniques, increased sensor bandwidth, and improved digital algorithms that can accurately extract distance measurements, Howe explained.

«For example, the measurements showed that a SMA8 surface that was tested in Norway in the period 2012 - 2015, and which is known to provide minor levels of noise reduction, exhibits a difference in rolling resistance of 23 per cent when comparing an EV tire manufactured by Continental (standard on electric VW Golfs) with a popular brand manufactured by Michelin,» says Berge.

This approach, together with a technique enabling the researchers to filter out excess noise in the measurements, made the detections possible.

When I visit Lincoln Center, I find noise up to 80 dB on the street corner outside, but after I step into the empty Tully Hall and close the door behind me, my meter bottoms out at its lower limit of 50 dB for the first time; Holden tells me his firm's measurements show that the sound level in the space is actually less than 25 dB.

This allows the researchers to make complete measurements in a manner constrained only by the system repetition, detection rate and desired signal - to - noise ratio of the overall final measurement according to Dennett.

«The systems are tuned in such a way that at the time of measurement, our system is at the maxima or minima — the points where the effects of noise are low in general and much lower if the systems are coupled.

«We provide tools for people to work with when their measurements have noise and they're interested in correlations and quantitative relationships,» he said.

This noise results from the state measurement itself, since after excitation, each atom is first in a superposition of the two eigenstates and is randomly projected into one of the two states only when the measurement is performed.

The non-invasive force measurement method based on the fluctuation theorem enabled measurement by analyzing the fluctuating behavior of cargo vesicles in the cytosol subject to thermal noise and so on.

110 participants were equipped with portable ECG devices that recorded their heart rate in repeated measurements over a period of approximately six hours, and individual noise levels were also recorded.

As such, finding ways to reduce quantum noise can enhance the precision of measurement in the examples given above.

Now a team of physicists including Aranya Bhattacherjee from Jawaharlal Nehru University, New Delhi, India and colleagues are investigating ways of improving the analysis of quantum noise measurement in the case of spectroscopic investigations; their preliminary findings were released in a study in EPJ D.

Park NX - HDM, together with its industry's lowest noise floor, and its unique True Non-Contact ™ technology, it is the most accurate AFM for surface roughness measurement in the market.

Group 1: Materials, Resonators, & Resonator Circuits A. Fundamental Properties of Materials B. Micro - and Macro-Fabrication Technology for Resonators and Filters C. Theory, Design, and Performance of Resonators and Filters, including BAW, FBAR, MEMS, NEMS, SAW, and others D. Reconfigurable Frequency Control Circuits, e.g., Arrays, Channelizers Group 2: Oscillators, Synthesizers, Noise, & Circuit Techniques A. Oscillators — BAW, MEMS, and SAW B. Oscillators - Microwave to Optical C. Heterogeneously Integrated Miniature Oscillators, e.g., Single - Chip D. Synthesizers, Multi-Resonator Oscillators, and Other Circuitry E. Noise Phenomena and Aging F. Measurements and Specifications G. Timing Error in Digital Systems and Applications Group 3: Microwave Frequency Standards A. Microwave Atomic Frequency Standards B. Atomic Clocks for Space Applications C. Miniature and Chip Scale Atomic Clocks and other instrumentation D. Fundamental Physics, Fundamental Constants, & Other Applications Group 4: Sensors & Transducers A. Resonant Chemical Sensors B. Resonant Physical Sensors C. Vibratory and Atomic Gyroscopes & Magnetometers D. BAW, SAW, FBAR, and MEMS Sensors E. Transducers F. Sensor Instrumentation Group 5: Timekeeping, Time and Frequency Transfer, GNSS Applications A. TAI and Time Scales, Time and Frequency Transfer, and Algorithms B. Satellite Navigation (Galileo, GPS,...) C.Telecommunications Network Synchronization, RF Fiber Frequency Distribution D. All - optical fiber frequency transfer E. Optical free - space frequency transfer F. Frequency and Time Distribution and Calibration Services Group 6: Optical Frequency Standards and Applications A. Optical Ion and Neutral Atom Clocks B. Optical Frequency Combs and Frequency Measurements C. Ultrastable Laser Sources and Optical Frequency Distribution D. Ultrastable Optical to Microwave Conversion E. Fundamental Physics, Fundamental Constants, and Other Applications

Noise has traditionally been difficult to study in biology, because most biological techniques, such as measurement of gene activity, average the output of many cells, erasing individual variability.

It builds on several recent and ongoing research efforts to provide high - resolution measurements of behavior and behavioral response of marine mammals to human noise in their environment using controlled exposure experiments.

She is involved in many EIA projects in Taiwan concerning underwater noise measurement and modeling and noise impact assessment study.

These involved calculating weights for the velocity time series from the measurement uncertainties and adjusting them in order to minimize the noise level of the combined data.

Noise as an Indicator of Quality of Life: Advances in Measurement of Noise and Noise Effects on Humans and Animals in the Environment — Ann Bowles and Brigitte Schulte - Fortkamp

Optical fiber modal noise in the 0.8 to 1.5 micron region and implications for near infrared precision radial velocity measurements

If the noise measurement survey shows that the ambient external noise levels on the site are below 45 dB and prediction work shows that they will remain below 45 dB in the future, no special measures are likely to be necessary to protect the buildings or playing fields from external noise.

The 4.7 - litre engine features BlueDIRECT direct fuel injection technology and will launch past 62mph in 4.9 s, which outputs a 435bhp twin turbo V8 to get from A to B. Black 20inch AMG double spoke Alloy wheels, AMG Sports Package, Bi-xenon headlights with LED technology, Electric Glass Sunroof, Hard Disk Drive (HDD) Navigation with 3D Map Display and TMC, Start / Stop System, Advanced Parking Guidance - Parking Space Measurement, Visual and Audible Steering Guidance, Front Seats - Heated, Linguatronic Voice Control for Navigation, Luxury Automatic Climate Control - Two Zone, with Digital Display, Speedtronic Cruise Control, Alarm System, Bluetooth Interface for Hands - Free Telephony, Drivers and Front Passenger Seats - Electrically Adjustable with Memory, Electric Windows (4), Hill Start Assist, Metallic Paint, Radio / CD / DVD Changer (6 - Disc, Region 2 DVD Only) / MP3 Compatibility / SD Card Slot / 8in Colour Display / Media Interface, Rain Sensing Wipers - Two - Stage, Tinted, Laminated, Noise - Insulating, Infrared - Reflective Glass All Round, Tyre Pressure Loss Warning.

The «signal» is the portion of the measurement, you are interested in, while the «noise» is that which interferes with your observing the signal.

Note that this sampling noise in the tide gauge data most likely comes from the water sloshing around in the ocean under the influence of winds etc., which looks like sea - level change if you only have a very limited number of measurement points, although this process can not actually change the true global - mean sea level.

Of course, on a timescale of one decade the noise in the temperature signal from internal variability and measurement uncertainty is quite large, so this might be hard to determine, though tamino showed that five year means show a monotonic increase over recent decades, and one might not unreasonably expect this to cease for a decade in a grand solar minimum scenario.

The advantage of the ocean heat content changes for detecting climate changes is that there is less noise than in the surface temperature record due to the weather that affects the atmospheric measurements, but that has much less impact below the ocean mixed layer.

You will still SEE an increase in temperatures, but because of the poor localisation the variability is much higher and the effect of small - scale (compared to global) forcings that affect only the region you have measurements for mean that to get the signal from the noise requires more time.

[Response: True, but as long as the errors themselves are iid, then you are still testing for a signal if you have many parallel series (the noise cancels in a similar way to taking the mean over many measurements).

I don't think those measurements were capable of resolving the background CO2 from the noise of the in situ where it was done.

The measurement environment is hardly static, yet we are looking for small variations in the climate in the midst of all this noise and uncertainty.

Noise would be the non-temperature input to the data: human error, equipment inaccuracy and imprecision, changes in measurement technique.

The variance in individual samples is not a result of measurement errors with known Gaussian random noise.

«In contrast, the difference between, say, the second and sixth warmest years is trivial since the known uncertainty — or noise — in the temperature measurement is larger than some of the differences between the warmest years.&raquIn contrast, the difference between, say, the second and sixth warmest years is trivial since the known uncertainty — or noise — in the temperature measurement is larger than some of the differences between the warmest years.&raquin the temperature measurement is larger than some of the differences between the warmest years.»

In a dramatic win for residents» groups who have raised widespread concerns about the impact of wind farms on rural communities, the committee recommended that noise measurements be expanded to include low - frequency noise, or infrasound.

Using data without a safety margin, such as mean values for a given turbine model, measurements from a single turbine, or «best guess» for future turbines gives in principle a probability of 50 per cent that the actual erected turbines will emit more noise than assumed and that noise limits will be exceeded.»

Perhaps in 8 years we can say < = 2 %, but the measurement by then will be sinking into the noise and such precision is unlikely.

The accuracy of the measurement process is not improved, merely its precision in the presence of random noise.

What is surprising, and will remain so, is how a series of dubious measurements, either synthesized from out of the noise or barely above the noise, and in no way historically unsurprising, has made the world stand on its head and contemplate the idiocy demanded by Gore & co..

Tricks were used in the measurements of low - frequency noise and infrasound, as denounced by Professor Henrik Moeller, a renowned acoustician from the University of Aalborg [click here for English translation].

Confounding influences are accounted for in measurements and while they leave some noise in the record they can not account for the observed upward trend.

Slide 4 shows a power spectrum of yearly temperature anomalies, and the inset to that figure in particular looks to show a sudden change in the measurement noise level right at about 1941.

And, if you have applied autocorrelation that is broader than usual are you not masking the possibility for decade scale fluctuations to be detectable in the presence of uncorrelated inter-annual measurement noise?