Hybrid photon-counting detectors are widely established at third-generation synchrotron facilities and the specifications of the Pilatus3 X CdTe were quickly recognized as highly promising in charge-density investigations. This is mainly attributable to the detection efficiency in the high-energy X-ray regime, in combination with a dynamic range and noise level that should overcome the perpetual problem of detecting strong and weak data simultaneously. These benefits, however, come at the expense of a persistent problem for high diffracted beam flux, which is particularly problematic in single-crystal diffraction of materials with strong scattering power and sharp diffraction peaks. Here, an in-depth examination of data collected on an inorganic material, FeSb2, and an organic semiconductor, rubrene, revealed systematic differences in strong intensities for different incoming beam fluxes, and the implemented detector intensity corrections were found to be inadequate. Only significant beam attenuation for the collection of strong reflections was able to circumvent this systematic error. All data were collected on a bending-magnet beamline at a third-generation synchrotron radiation facility, so undulator and wiggler beamlines and fourth-generation synchrotrons will be even more prone to this error. On the other hand, the low background now allows for an accurate measurement of very weak intensities, and it is shown that it is possible to extract structure factors of exceptional quality using standard crystallographic software for data processing (SAINT-Plus, SADABS and SORTAV), although special attention has to be paid to the estimation of the background. This study resulted in electron-density models of substantially higher accuracy and precision compared with a previous investigation, thus for the first time fulfilling the promise of photon-counting detectors for very accurate structure factor measurements.

Current data collection strategies in electron cryo-microscopy (cryo-EM) record multiframe movies with static optical settings. This limits the number of adjustable parameters that can be used to optimize the experiment. Here, a method for fast and accurate defocus (FADE) modulation during movie acquisition is proposed. It uses the objective lens aperture as an electrostatic pole that locally modifies the electron beam potential. The beam potential variation is converted to defocus change by the typically undesired chromatic aberration of the objective lens. The simplicity, electrostatic principle and low electrical impedance of the device allow fast switching speeds that will enable per-frame defocus modulation of cryo-EM movies. Researchers will be able to define custom defocus `recipes' and tailor the experiment for optimal information extraction from the sample. The FADE method could help to convert the microscope into a more dynamic and flexible optical platform that delivers better performance in cryo-EM single-particle analysis and electron cryo-tomography.

Detailed analysis of the high-flux deficiencies of pixel-array detectors leads to a protocol for the measurement of structure factors of unprecedented accuracy even for inorganic materials, and this significantly advances the prospects for experimental electron-density investigations.

Here’s some good news that should hit you in the gut. A team of scientists searching thousands of environments for bacteria that produce the deadly […]

The post Survey pinpoints where toxic mercury accumulates in world environments appeared first on Smithsonian Insider.

The environmental effects of oil and gas exploration and production on Alaska s North Slope have been accumulating for more than three decades, says a new report from the National Academies National Research Council.

A new data network that integrates emerging research on the molecular makeup of diseases with clinical data on individual patients could drive the development of a more accurate classification of disease and ultimately enhance diagnosis and treatment, says a new report from the National Research Council.

US Secretary of Education Betsy DeVos.; Credit: BRENDAN SMIALOWSKI/AFP via Getty Images

The U.S. Education Department on Wednesday finalized campus sexual assault rules that bolster the rights of the accused, reduce legal liabilities for schools and colleges, and narrow the scope of cases schools will be required to investigate.  

The change announced by Education Secretary Betsy DeVos reshapes the way the nation’s schools respond to complaints of sexual misconduct. It is meant to replace policies from the Obama administration that DeVos previously revoked, saying they pressured schools to deny the rights of accused students. “Today we release a final rule that recognizes we can continue to combat sexual misconduct without abandoning our core values of fairness, presumption of innocence and due process," she said. "This empowers survivors with more tools than ever before." Democrats and education groups had asked DeVos to delay any changes until after the coronavirus pandemic, saying colleges don’t have time to implement new federal rules while they respond to the crisis.

The new rules appear to be consistent with much of what was originally proposed in 2018, but also set a more specific definition of what constitutes sexual assault and require that colleges and universities hold live hearings during which the victim and defendant would be allowed to cross-examine one another. K-12 schools have the option to hold live hearings as well, though it is not required. In order for a school to be found legally liable under the new rules, there would need to be evidence that the school was “deliberately indifferent” in following directives for providing resources for the victim and investigating the complaint fairly. 

Today on AirTalk, we’ll debate the finalized rules and talk about the practical and legal implications for students, schools and administrators.

With files from the Associated Press

Guests:

Jenna Parker, partner at Hathaway Parker based in Los Angeles; she specializes in Title IX cases and has represented  students and others accused of sexual misconduct

Michele Dauber, professor of Law and Sociology at Stanford University; chair of the “Enough is Enough Voter Project,” a political action committee that advocates for making violence against women a voting issue; she helped revise Stanford’s policy on sexual assault; she tweets @mldauber

This content is from Southern California Public Radio. View the original story at SCPR.org.

Secretary of Education Betsy Devos, seen on March 27, has released new rules for sexual assault complaints on college campuses.; Credit: Jim Watson/AFP via Getty Images

New federal regulations on how schools – from kindergarten all the way through college — must respond to cases of sexual assault and harassment are drawing swift and mixed reactions.

Education Secretary Betsy DeVos announced what she called historic changes Wednesday to Obama-era guidelines that she said will make the process fairer and better protect accused students. While some welcome the changes to Title IX as long overdue, survivors' advocates are panning the new rules as a throwback to the days when sexual assault was seldom reported or punished, and schools are protesting they can't possibly implement them by summer, as required.

Among the most significant changes are new regulations aimed at beefing up protections for accused college students, by mandating live hearings by adjudicators who are neither the Title IX coordinator nor the investigator, and real-time cross examination of each student by the other student's lawyer or representative.

"Cross examination is an important part of ensuring truth is found," said DeVos, adding that "our rule is very sensitive to not requiring students to face each other. In fact it specifically prohibits that. But it's an important part of ensuring that justice is ultimately served."

Under the new regulations, students also have a right to appeal, and schools are allowed to raise the evidentiary standard from "a preponderance of the evidence" to "clear and convincing," making it harder to find a student responsible for misconduct.

Also, the definition of sexual harassment narrows, so only that which is "severe, pervasive and objectively offensive" warrants investigation. On the other hand, dating violence and stalking would now be added to the kinds of offenses that schools must respond to.

Devos' proposed regulations, released last fall, would have given schools no responsibility to deal with off-campus incidents. But after a torrent of criticism, the final rules clarify that schools must respond to off-campus incidents that are in places or during events that the school is involved with. So, for example, frat houses would be covered, but a private off-campus apartment, would not. And a school would be obligated to respond to an alleged incident during a school field trip but not a private house party.

Cynthia Garrett, co-president of Families Advocating for Campus Equality, a group that advocates for the accused, welcomes the changes as long overdue.

"Anybody who's accused of something so vile [as sexual assault] has to have the opportunity to defend themselves," she says. "I think that in order to ruin someone's life [by expelling them from school] there has to be a process like this. It shouldn't be easy."

An accused student who asked to be identified as John Doe, as he was in his court cases, agrees that the new regulations are "very encouraging." He sued his school for suspending him after a hearing that he says denied him due process, by forcing him to defend himself without his attorney, and not allowing him to question his accuser. Later, after a federal court ruling in his favor, he reached a settlement with his school that wiped his record clean. But that was after nearly five years of what he describes as torment.

"People don't realize what these hearings used to look like," he says. "They can't just be a horse and pony show where they go through the motions and the school comes to a predetermined outcome."

Survivor advocates, however, say the new regulations will have a chilling effect on reporting, as alleged victims may view it as futile to file a formal complaint, or too retraumatizing, for example, to be subject to cross-examination. "This is extremely worrisome," says Sage Carson, manager of the survivor advocacy group Know Your IX. The new regulations "make it clear to me that DeVos cares more about schools and [accused students] than she does about survivors," says Carson.

The off-campus exclusion is also a sticking point. "We know that a majority of violence does not happen in libraries or in on-campus housing," says Carson.

She says she was assaulted in an off-campus apartment years ago, and was allowed to file a formal Title IX complaint back then. But if the rules then were like what DeVos is announcing now, Carson would not have had the option. "I would absolutely have dropped out of school," she says.

Doe, however, who was accused of an alleged assault during a private weekend jaunt hundreds of miles away from school during summer break, says the new rules prevent that kind of "overreach." His accuser wasn't a student at his college anymore. He says, "I just don't think that's reasonable."

Schools meantime, have objections of their own, first and foremost being forced to play the role of virtual trial courts to adjudicate intensely complex cases.

"We are not set up to do that," says Terry Hartle, senior vice president of the American Council on Education, a trade association representing 2,000 public and private colleges and universities. "We do not have the legal authority to do that. We don't have the social legitimacy to do that. We want to teach students. We don't want to run courts."

Schools also object to the timing, requiring the changes to be implemented by August 14th, even though schools are already overwhelmed with managing their sudden switch to online learning because of COVID-19.

"This is madness," says Hartle. "This is an extraordinarily complicated piece of work that they have spent more than three years developing. It's a mistake to now turn to colleges and universities and say, put it in place in 100 days. It's simply not going to work very well."

Smaller schools, especially, Hartle says, "are just overwhelmed. They don't know how or where to begin" to implement these changes.

Anticipating the objections, DeVos insisted that "civil rights really can't wait. And students cases continue to be decided now." She suggested that this may actually be the best time for schools to make the changes since there are no students on campus.

Hartle says schools will continue pressing for the Department of Education to allow schools more time. Meantime, several legal challenges are in the works, so a temporary stay is also a possibility. That would give schools a reprieve while those cases wind their way through the courts.

This content is from Southern California Public Radio. View the original story at SCPR.org.

New research has identified 25 variables that influence noise in urban areas. By combining these into an equation, the study produced an accurate tool to describe urban sound environments that could be useful in urban planning.

Research from the US helps paint a clearer picture of the extent of global sea level rise, by considering new satellite data on the Earth’s gravity. Its findings support reports of accelerating ice melt and suggest that most of the change in sea levels is caused by receding polar ice sheets and mountain glaciers.

A study of two forest ecosystems in Spain has found that land-cover maps of watersheds, ecosystems hosting key interactions between vegetation, wildlife, and water, are made more accurate by the inclusion of LiDAR data — a type of remote sensing that pulses laser light at a target to measure vertical distances for use in 3D-mapping an environment. This has important implications for ecosystem monitoring, flood mitigation, and forest management, fields in which accurately characterising an environment is key.

Economic valuation of ecosystem services, from good quality water supplies to cooling cities in the face of climate change, can provide vital information for policy decisions. However, the definition and interpretation of ecosystem services need to be clarified to ensure accurate valuations, suggests new research.

In an interaction with ETCIO, Krishnan Venkateswaran, Chief Digital & Information Officer, Titan, explains how augmented intelligence and machine learning are being leveraged for innovating design & creativity in the company.

In conversation with ETCIO, Subodh Kumar, CTO, Magicbricks, shares how data comprising 75 attributes has helped the company generate 60% more quality leads

A new long-term monitoring study is the first to demonstrate that climate changes are having divergent effects on populations of bird species across Europe and the United States. The study identifies broad-scale impacts on the abundance of common bird species over a 30-year period, to show that, overall, populations of bird species across both continents are being affected by changes in climate. The research adds to a growing body of evidence that climate change is affecting biodiversity either positively or adversely, depending on species’ climate preferences.

A new tool that predicts the effects of complex mixtures in water has shown promising results. It correctly predicted the impacts of toxic mixtures on the model species Daphnia magna, or water fleas, in over 90 per cent of cases.

Methylmercury may accumulate more quickly in fish as the climate grows warmer, new research suggests. Researchers in the US have found that levels of the toxin were higher in fish exposed to higher temperatures; global warming could therefore lead to increased human exposure to methylmercury through seafood consumption.

Lithium production has increased dramatically during the past decade. A new study has found that exposure of rainbow trout to lithium results in fast accumulation in plasma and the brain, along with decreased concentrations of ions such as sodium.

Cutting edge neural network and artificial intelligence technologies, combined with the imaginative work of the $1 million Zillow Prize winners, creates most accurate Zestimate ever

The Mapdwell project at MIT combines Google Maps, solar power data and some smart algorithms to calculate the costs and benefits of installing solar panels.

Scientists using artificial intelligence have devised a highly accurate blood test for 50 kinds of cancer by looking for the DNA of dead tumor cells.

From temperature to location, so many factors can impact snowfall.

Using probably the World's Smallest Heart Rate Sensing Technology (ActivHearts)

New Intermountain Healthcare Study Finds Computer-Based Predictive Tool More Accurately Forecasts Outcomes for Respiratory Patients Helping Clinicians Provide Best Course of Care

Winner of Best Innovation Award in CES 2018 introduces AI earbus Accudio

Seng Xiong Wrongfully Convicted of Fraud Remains Incarcerated and Restrained of His Liberty at Moshannon Valley Correctional Institution

The following is a brief roundup of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus. A new antibody test is highly accurate at determining whether people have been infected with the novel coronavirus, according to a study published on Friday in The Journal of Clinical Microbiology. Researchers at the University of Washington School of Medicine found the test, manufactured by Abbott Laboratories, had a specificity rate of 99.9% and a sensitivity rate of 100%, suggesting little chance of incorrectly diagnosing a healthy person as having been infected and virtually no chance of a false negative readout.

FREETOWN (Reuters) - Sierra Leone's president Julius Maada Bio has accused the main opposition party of orchestrating a spate of violent incidents, deepening a political standoff that risks undermining the country's efforts to contain a coronavirus outbreak. At least 18 people have died in three riots in separate parts of the country in recent weeks, including a disturbance at Freetown's central prison on April 29 which started after an inmate tested positive for the virus. In a televised address, Bio claimed members of the All People's Congress (APC) party were behind the violence.

The post Sierra Leone’s president accuses main opposition party of inciting violence appeared first on Firstpost.

With better address data, the city added more than 300 missing addresses to the Census file provided by the federal government

The former aide who has accused Democratic presidential candidate Joe Biden of sexual assault has been interviewed by Megyn Kelly.

In North Carolina, she claimed to be a vet student at NC State. I think the more authorities dig, the more they'll find.

Almost two months back (NET NEWS 3/2) ACCURADIO, music streaming’s all-human-curated music website, invited radio professionals “dislocated” by restructuring and … more

Research Highlights: Most home blood pressure monitoring devices sold in Australia by global e-commerce sites such as Amazon and eBay have not been validated (tested for accuracy). Using an unvalidated device could lead to incorrect at-home blood...

Tags: coronavirus, Quartz, testing, uncertainity

The Hierarchical Equal Area isoLatitude Pixelation (HEALPix) scheme is used extensively in astrophysics for data collection and analysis on the sphere. The scheme was originally designed for studying the Cosmic Microwave Background (CMB) radiation, which represents the first light to travel during the early stages of the universe's development and gives the strongest evidence for the Big Bang theory to date. Refined analysis of the CMB angular power spectrum can lead to revolutionary developments in understanding the nature of dark matter and dark energy. In this paper, we present a new method for performing spherical harmonic analysis for HEALPix data, which is a central component to computing and analyzing the angular power spectrum of the massive CMB data sets. The method uses a novel combination of a non-uniform fast Fourier transform, the double Fourier sphere method, and Slevinsky's fast spherical harmonic transform (Slevinsky, 2019). For a HEALPix grid with $N$ pixels (points), the computational complexity of the method is $mathcal{O}(Nlog^2 N)$, with an initial set-up cost of $mathcal{O}(N^{3/2}log N)$. This compares favorably with $mathcal{O}(N^{3/2})$ runtime complexity of the current methods available in the HEALPix software when multiple maps need to be analyzed at the same time. Using numerical experiments, we demonstrate that the new method also appears to provide better accuracy over the entire angular power spectrum of synthetic data when compared to the current methods, with a convergence rate at least two times higher.

Spiking neural networks (SNNs) are considered as a potential candidate to overcome current challenges such as the high-power consumption encountered by artificial neural networks (ANNs), however there is still a gap between them with respect to the recognition accuracy on practical tasks. A conversion strategy was thus introduced recently to bridge this gap by mapping a trained ANN to an SNN. However, it is still unclear that to what extent this obtained SNN can benefit both the accuracy advantage from ANN and high efficiency from the spike-based paradigm of computation. In this paper, we propose two new conversion methods, namely TerMapping and AugMapping. The TerMapping is a straightforward extension of a typical threshold-balancing method with a double-threshold scheme, while the AugMapping additionally incorporates a new scheme of augmented spike that employs a spike coefficient to carry the number of typical all-or-nothing spikes occurring at a time step. We examine the performance of our methods based on MNIST, Fashion-MNIST and CIFAR10 datasets. The results show that the proposed double-threshold scheme can effectively improve accuracies of the converted SNNs. More importantly, the proposed AugMapping is more advantageous for constructing accurate, fast and efficient deep SNNs as compared to other state-of-the-art approaches. Our study therefore provides new approaches for further integration of advanced techniques in ANNs to improve the performance of SNNs, which could be of great merit to applied developments with spike-based neuromorphic computing.

By Erica L. Green The New York Times Company…

A method and apparatus may be used to evaluate a polynomial by initializing a multiply and accumulate feedback apparatus (260) comprising a multiplier stage (264) having an output coupled to an input of an accumulator stage (267) having an accumulator feedback output (269) selectively coupled to an input of the multiplier stage over a plurality of clock cycles; iteratively calculating a final working loop variable z over an additional plurality of clock cycles; multiplying the final working loop variable z and a complex input vector x to compute a final multiplier value; and adding a least significant complex polynomial coefficient to the final multiplier value using the multiplier stage of the multiply and accumulate feedback apparatus to yield a result of the polynomial evaluation.

A method and system for optical proximity correction (OPC) is disclosed in which a set of shaped beam shots is determined which, when used in a shaped beam charged particle beam writer, will form a pattern on a reticle, where some of the shots overlap, where the pattern on the reticle is an OPC-corrected version of an input pattern, and where the sensitivity of the pattern on the reticle to manufacturing variation is reduced. A method for fracturing or mask data preparation is also disclosed.

A device and method provide for an accurate output from a unit, such as an oscillator and/or clock providing an output indicative of frequency and/or time. The device includes a processing section having a microprocessor that develops a model characterizing the performance of the device, including establishing predicted accuracy variations, and the model is then used to correct the unit output. An external reference is used to provide a reference input for updating the model, including updating of predicted variations of the unit, by comparison of the reference input with the unit output. The ability of the model to accurately predict the performance of the unit improves as additional updates are carried out, and this allows the interval between the updates to be lengthened and/or the overall accuracy of the device to be improved. The accuracy of the output is thus adaptively optimized in the presence of systematic and random variations.

An accumulator of the invention is provided with a safety mechanism for an emergency which releases an internal pressure of the housing to the oil port side so as to prevent the housing from being exploded by the internal pressure of the housing which comes to a higher pressure in an emergency, for example, occurrence of fire disaster. The safety mechanism for the emergency has a taper portion in a corner portion between the tubular portion and the end surface portion of the stay. The taper portion is buckled at its root position in the emergency. In the case that the taper portion is buckled, a pressure releasing flow path is formed between the bellows cap or the retained member and the taper portion as well as the bellows cap or the retained member and the end surface portion come away. The stay can be manufactured only by press molding.

There are provided an accumulator-type fractional N-PLL synthesizer for suppressing the fractional spurious caused by periodically switching a frequency division number of a fractional frequency divider, and a control method thereof. In an accumulator-type fractional N-PLL synthesizer (100), a pulse signal proportional to a fractional phase error occurring between a reference signal and an output signal of a fractional divider (112) for feeding back an output of a VCO (115) of an output stage to a preceding stage is generated using an error signal from an accumulator (120). Through the use of the pulse signal, pulse widths of a UP signal and a DN signal output from a phase detector (140) are controlled so as to reduce a fractional phase error occurring between the UP signal and the DN signal. Thus, the fractional spurious caused by periodically switching the frequency division number of the fractional divider (112) is suppressed.

A detection device is used in a gaming machine that detects numbers of dots on a plurality of dice having wireless tags. The detection device reads the wireless tags which are embedded on each face of the dice by a reader having an antenna. The antenna of the reader includes a first antenna portion disposed substantially in a central portion of a field that supports the dice, and formed in a substantially circular shape, and a plurality of second antenna portions disposed so as to superimpose a detection area of the first antenna portion, and having a detection area larger than the first antenna portion. The first antenna portion and the plurality of the second antenna portions are disposed so as to have a portion of detection areas mutually superimposed on a playing board.

A system and method for nodule boundary visualization superimposed on a scan image, including generating phantom image measurements of at least one synthetic calibration object in relation to a body to calibrate a scanner; acquiring a first image of a nodule on the calibrated scanner; computing and marking a boundary on the image; displaying the first image with the boundary superimposed over the first image; presenting the initial boundary to a user for modification where the user can add one or more modification points to the image to create a modified boundary that is encompassed by the one or more modification points; once the user has marked the one or more modification points on the image, computing an updated boundary that adapts to include the new points.

A circuit for connecting a first accumulator line to a second accumulator line from an accumulator is described. The accumulator is provided for charging and discharging electrical energy via the accumulator lines. Each accumulator line has a positive pole and a negative pole for charging and discharging electrical energy. The circuit has at least one first switch which is provided for disconnecting and connecting two similar poles of the two accumulator lines.

There is provided a cassette having: a flexible accommodating body that accommodates an accumulative fluorescent sheet in a light shielded state; an entrance/exit portion that is provided at one end portion of the flexible accommodating body, and through which the accumulative fluorescent sheet can be inserted and removed into and from the flexible accommodating body due to mounting to a radiographic image reading device; and opening/closing means for opening the flexible accommodating body such that a push-out member, that pushes the accumulative fluorescent sheet out toward the entrance/exit portion, can be inserted, or closing the flexible accommodating body in a light shielded state.

An accumulating apparatus (4) has an upper arm (51) in which a plurality of upper rollers (511) are arranged, and a lower arm (52) in which a plurality of lower rollers (521) are arranged. An upper gear (61) is fixed to the upper arm and a lower gear (62) is fixed to the lower arm. The upper gear is engaged with the lower gear so that the upper arm and the lower arm are simultaneously moved in opposite directions with respect to a vertical direction. Therefore, when moving the lower arm in the vertical direction, influence of the weight of the lower arm is canceled by the weight of the upper arm, and a force to move the lower arm upward can be reduced. As the result, an air cylinder (63) for changing a distance between the upper arm and the lower arm can be downsized.

A phase-locked loop double-point modulator may include a frequency divider having a ratio which can be changed by a first modulation signal, and an oscillator, a frequency of which can be changed by a second modulation signal correlated to the first modulation signal. A calibration circuit may be configured, in a calibration mode, to match the gains of the first and second modulation signals based on frequency measurements of the oscillator for two different calibration values of the second modulation signal. The phase-locked double-point modulator may also include an attenuator having a constant ratio greater than 1 and placed in the path of the second modulation signal, and a selector switch configured to be controlled by the calibration circuit to reduce the ratio of the attenuator in the calibration mode.

The invention is an accumulator system in which multiple elastomeric accumulators are attached in series or parallel in order to generate total differential pressure in excess of that generated in a non-series system. Also disclosed is a “stacked” accumulator system. The system stores energy when the accumulators deform from their original shape in response to the flow of a pressurized fluid. The stored energy is available for use when the fluid is released from the accumulators and the accumulators return to their original shape.