Deflectometric profilometers are used to precisely measure the form of beam shaping optics of synchrotrons and X-ray free-electron lasers. They often utilize autocollimators which measure slope by evaluating the displacement of a reticle image on a detector. Based on our privileged access to the raw image data of an autocollimator, novel strategies to reduce the systematic measurement errors by using a set of overlapping images of the reticle obtained at different positions on the detector are discussed. It is demonstrated that imaging properties such as, for example, geometrical distortions and vignetting, can be extracted from this redundant set of images without recourse to external calibration facilities. This approach is based on the fact that the properties of the reticle itself do not change – all changes in the reticle image are due to the imaging process. Firstly, by combining interpolation and correlation, it is possible to determine the shift of a reticle image relative to a reference image with minimal error propagation. Secondly, the intensity of the reticle image is analysed as a function of its position on the CCD and a vignetting correction is calculated. Thirdly, the size of the reticle image is analysed as a function of its position and an imaging distortion correction is derived. It is demonstrated that, for different measurement ranges and aperture diameters of the autocollimator, reductions in the systematic errors of up to a factor of four to five can be achieved without recourse to external measurements.

Modeling the behavior of a prototype cantilevered X-ray adaptive mirror (held from one end) demonstrates its potential for use on high-performance X-ray beamlines. Similar adaptive mirrors are used on X-ray beamlines to compensate optical aberrations, control wavefronts and tune mirror focal distances at will. Controlled by 1D arrays of piezoceramic actuators, these glancing-incidence mirrors can provide nanometre-scale surface shape adjustment capabilities. However, significant engineering challenges remain for mounting them with low distortion and low environmental sensitivity. Finite-element analysis is used to predict the micron-scale full actuation surface shape from each channel and then linear modeling is applied to investigate the mirrors' ability to reach target profiles. Using either uniform or arbitrary spatial weighting, actuator voltages are optimized using a Moore–Penrose matrix inverse, or pseudoinverse, revealing a spatial dependence on the shape fitting with increasing fidelity farther from the mount.

The Circular Electron–Positron Collider (CEPC) in China can also work as an excellent powerful synchrotron light source, which can generate high-quality synchrotron radiation. This synchrotron radiation has potential advantages in the medical field as it has a broad spectrum, with energies ranging from visible light to X-rays used in conventional radiotherapy, up to several megaelectronvolts. FLASH radiotherapy is one of the most advanced radiotherapy modalities. It is a radiotherapy method that uses ultra-high dose rate irradiation to achieve the treatment dose in an instant; the ultra-high dose rate used is generally greater than 40 Gy s−1, and this type of radiotherapy can protect normal tissues well. In this paper, the treatment effect of CEPC synchrotron radiation for FLASH radiotherapy was evaluated by simulation. First, a Geant4 simulation was used to build a synchrotron radiation radiotherapy beamline station, and then the dose rate that the CEPC can produce was calculated. A physicochemical model of radiotherapy response kinetics was then established, and a large number of radiotherapy experimental data were comprehensively used to fit and determine the functional relationship between the treatment effect, dose rate and dose. Finally, the macroscopic treatment effect of FLASH radiotherapy was predicted using CEPC synchrotron radiation through the dose rate and the above-mentioned functional relationship. The results show that the synchrotron radiation beam from the CEPC is one of the best beams for FLASH radiotherapy.

Mollie, a financial service provider in Europe, has introduced Tap to Pay on iPhone, enabling businesses to accept contactless payments via the Mollie app.

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On August 17, 2017, scientists made history with the first direct observation of a merger between two neutron stars. It was the first cosmic event detected in both gravitational waves and the entire spectrum of light, from gamma rays to radio emissions. The impact also created a kilonova -- a turbocharged explosion that instantly forged several hundred planets’ worth of gold and platinum. The observations provided the first compelling evidence that kilonovae produce large quantities of heavy metals, a finding long predicted by theory. Astronomers suspect that all of the gold and platinum on Earth formed as a result of ancient kilonovae created during neutron star collisions. Based on data from the 2017 event, first spotted by the Laser Interferometer Gravitational-wave Observatory (LIGO), astronomers began to adjust their assumptions of how a kilonova should appear to Earth-bound observers. A team of scientists reexamined data from a gamma-ray burst spotted in August 2016 and found new evidence for a kilonova that went unnoticed during the initial observations.

Image credit: NASA/ESA/E. Troja

Long-term population trends for some North American pollinators -- bees, birds, bats, and other animals and insects that spread pollen so plant fertilization can occur -- are demonstrably downward, says a new report from the National Research Council.

The science questions that could be answered by an electron ion collider (EIC) – a very large-scale particle accelerator – are significant to advancing our understanding of the atomic nuclei that make up all visible matter in the universe, says a new report by the National Academies of Sciences, Engineering, and Medicine.

PFAS, or perfluoroalkyl and polyfluoroalkyl substances, are ubiquitous fluorinated organic compounds found widely in manufactured products, from firefighting foam to stain-resistant carpets. These water- and oil-repellent compounds are known to degrade slowly over time, and have been found in humans, drinking water, and even in Arctic ecosystems.

When roboticists create behaviors for teams of robots, they first build algorithms that focus on the intended task. Then they wrap safety behaviors around those primary algorithms to keep the machines from running into each other. Each robot is essentially given an invisible bubble that other robots must stay away from. As long as nothing touches the bubble, the robots move around without any issues. But that's where the problems begin.

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Olli Salumeria and That's it. Fruit Bars bring new snack packs to retaill.

As a category leader in the D2C optical industry, GlassesUSA.com's augmented reality-driven Virtual Try-On feature allows you to easily see yourself in any pair of glasses from the comfort of your couch.

Celebrity Influencers Like M2THAK Step into the Ring alongside Pro Boxers Like Hasim Rahman Jr. for a Night of Thrilling Entertainment and Unforgettable Showdowns.

Taffene Dobson Hollingsworth is recognized for her success and tenure in project management in local government

Chardé Hollins has changed the landscape of several industries through her contributions to social work

Laurel Morrison Collins serves as the owner of Watershed Sciences

Holli Miller lends years of expertise to her work with Providence

Jeanne D. Collins is honored for her success as the founder of JerMar Designs and JerMar Publishing

Hair follicles are cryopreserved at extremely low temperatures, placing the stem cells in a state of "suspended animation" where they do not age.

Announcing the latest releases of three challenging and fun video games written by Brian Giedt this year.

Suspect is still at large after theft of a corpse

Mandi Collins celebrated for her impact on community engagement and anatomical donation programs

$349.5k settlement is more than 8X the initial insurance company offer

Cookery by the Book and Decorating by the Book Podcasts Merge Into One: Dinner Party

The civil litigation law firm is representing apartment residents after a fire at Bell Collier Village

The theory presented in the book "Sex On the Wrong Brain" and website of the same name suggests anti abortion misogyny is a byproduct of the sexual repression used for centuries to fuel the irrational need for certainty that drives authoritarianism.

Attorney John Tucker provides expert analysis on head-on collisions and what to do when involved.

Journey Opens January 27, 2024 at the African Voices Gallery

Experience the Soulful Rhythms of Sun Shade's Reggae Rendition of Phil Collins' Classic Hit, "Against All Odds"

Rolling Stone launched in 1967 with a mission to not only redefine music journalism but also chronicle important societal changes. Under the leadership of founding editor and publisher Jann Wenner, it published work from some of the 20th century’s greatest writers, reporters, designers and photographers. He explains how he identified and managed that talent and shares other lessons from his five decades at the forefront of rock and roll. Wenner is the author of "Like a Rolling Stone: A Memoir."

Several people pointed me to this news report on a successful bettor in an election prediction market: Not only did he see Donald Trump winning the presidency, he wagered that Trump would win the popular vote—an outcome that many political … Continue reading →

Estero, Fla., Nov. 12, 2024 —The American Heart Association, the world’s leading nonprofit organization focused on heart and brain health for all, hosted the 2024 Collier Heart Walk at Cambier Park on Saturday, November 2, raising over $360,000 to help...

Creating an infinite horizontal logo scroll effect with pure CSS is a simple yet powerful way to add dynamic movement to a website. This tutorial will walk you through building an infinite scroll effect with added hover effects that allow the user to pause scrolling and scale each logo slightly when hovered.

USDA Forest Service Follow these simple steps to create a pollinator-friendly landscape around your home or workplace Use a wide variety of plants that bloom from early spring into late fall Help pollinators find and use them by planting in … Continue reading →

Alan Collins is a Web programmer with the Information Services Directorate at the Queen's University Belfast. Prior to joining the University in Autumn 1997 he was a Health Service Clinical Scientist, specialising in the diagnosis of opthalmic disease by electrical methods.

"Batman: White Knight Presents: Harley Quinn takes place two years after Batman: Curse of the White Knight. Azrael has wiped out criminals in Gotham, Jack Napier (formerly The Joker) is dead, Bruce Wayne (Batman) is in prison, and Harley Quinn is adjusting to life as a single mother, raising the twins she had with Jack. But as new villains arise, Harley is forced to dance with madness once again and confront her own past with The Joker and Batman while helping the Gotham City police and an eager young FBI agent uncover the truth behind a series of gruesome murders. This collection also features a chapter from Harley Quinn's newest digital first series, Harley Quinn Black + White + Red, told in a traditional black-and-white format with the color red uniquely shaping Harley Quinn's story." -- Provided by publisher.

Integrated proteomics reveals autophagy landscape and an autophagy receptor controlling PKA-RI complex homeostasis in neurons  Nature.com

Polling is facing an existential crisis. Few people are answering the phone, and fewer people want to answer surveys. On today's show, we pick up the phones ourselves to find out how polling got to this place, and what the future of the poll looks like.

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Tune in to a mini-concert with Latin pop and hip hop group 2MX2, plus learn about the foundation cultivating Fort Collins' music scene.

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Musician Jacob Collier is known for his electrifying performances and thoughtful views on art and humanity. This hour, Jacob joins us for a conversation on the sparks that fuel his creative process. Want to share feedback with our team? NPR is conducting a survey to better understand how listeners like you spend time with podcasts. Help us out by completing a short, anonymous survey at npr.org/podcastsurvey - and thanks!

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In the cult comic American Born Chinese, Gene Luen Yang weaves mythical folklore with a coming-of-age immigrant story. The author reflects on why his story still feels relevant to young readers. Host Manoush Zomorodi also speaks with Ben Wang, star of the new Disney+ adaptation of the award-winning graphic novel.

TED Radio Hour+ subscribers now get access to bonus episodes, with more ideas from TED speakers and a behind the scenes look with our producers. A Plus subscription also lets you listen to regular episodes (like this one!) sponsor-free. Sign-up at plus.npr.org/ted.

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In this re-launch of the podcast, we take a spring stroll in unexpected places with author and urban enthusiast, Shawn Micallef. He writes about city explorations for The Toronto Star, Spacing Magazine and in his books, The Trouble With Brunch, and Stroll, from Coach House Books. For more, visit http://news.utoronto.ca     Transcript: Strolling with Shawn […]

Within the opening moments of a job interview, your first impression is made. Controlling that impression is often a matter of personal style. Let's talk about that one question we ask ourselves everyday: What am I going to wear? This question is never more important than it is on the day of a job interview. Yes, yes — your personality and skills matter, too. However, if we're talking about ...

Earlier this year, AIAG released updated APQP and Control Plan reference guides, available at www.aiag.org. This release includes the stand-alone control plan document for completing control plans.

Controlling the head pressure helps maintain pressure drop across the metering device and prevents the evaporator from freezing, in the case of air conditioning, and excessive freezing in refrigeration systems.

While balanced ventilation does have energy benefits, there is a misconception about its ability to reduce humidity.

Johannes Thönes talks to Dr. Ken Collier, Director of Agile Analytics at ThoughtWorks about Agile Analytics. The outline includes: descriptive analytics, predictive analytic and prescriptive analytics; artificial intelligence, machine learning, data mining and statistics; collaborative filtering; data science and data scientists; data warehousing and business intelligence; online analytical processing (OLAP), extract transform load (ETL), feature […]

Learn how to simplify your application architecture with the introduction of a messaging system. You'll hear how different messaging patterns can make your application more flexible, easier to maintain, and improve its performance.

Vladyslav Ukis, author of the book Establishing SRE Foundations: A Step-by-Step Guide to Introducing Site Reliability Engineering in Software Delivery Organizations, discusses how to roll out SRE in an enterprise. SE Radio host Brijesh Ammanath speaks with Vlad about the origins of SRE and how it complements ITIL (Information Technology Infrastructure Library). They examine how firms can establish foundations for rolling out SRE, as well as how to overcome challenges they might face in adopting. Vlad also recommends steps that organizations can take to sustain and advance their SRE transformation beyond the foundations.