experiment

Bragg Edge Analysis for Transmission Imaging Experiments software tool: BEATRIX

BEATRIX, is a new tool for performing data analysis of energy-resolved neutron-imaging experiments involving intense fitting procedures of multi-channel spectra. The use of BEATRIX is illustrated for a test specimen, providing spatially resolved 2D maps for residual strains and Bragg edge heights.




experiment

Calculation of total scattering from a crystalline structural model based on experimental optics parameters

A calculation procedure for X-ray total scattering and the pair distribution function from a crystalline structural model is presented. It allows one to easily and precisely deal with diffraction-angle-dependent parameters such as the atomic form factor and the resolution of the optics.




experiment

A novel experimental approach for nanostructure analysis: simultaneous small-angle X-ray and neutron scattering

A portable small-angle X-ray scattering instrument with geometrical dimensions suitable for installation at the D22 instrument was designed and constructed for simultaneous small-angle X-ray and neutron scattering experiments at ILL.




experiment

Lemurs exhibit ability for social learning in zoo experiment

Subjects watched demonstrators for varying amounts of time. When given the pipe, each of the subjects in both groups opened the door on their first attempt using the method they had seen demonstrated.

The post Lemurs exhibit ability for social learning in zoo experiment appeared first on Smithsonian Insider.




experiment

Lofty experiments with gliding ants reveals secrets of their unusual flight

One of the most challenging aspects of this research is simply studying these insects as they are falling, says Yanoviak, a tropical arthropod ecologist at the University of Arkansas, Little Rock. Small body size, rapid descent, and the long distances that they can fall, make accurate data taking a challenge.

The post Lofty experiments with gliding ants reveals secrets of their unusual flight appeared first on Smithsonian Insider.




experiment

SERC sedge grass experiment mimics predicted global-change scenario

Ecologists at the Smithsonian Environmental Research Center measure the growth rate of sedge grass in a brackish Chesapeake Bay marsh. Fed a diet rich in […]

The post SERC sedge grass experiment mimics predicted global-change scenario appeared first on Smithsonian Insider.




experiment

Common tropical bat uses echolocation with precision previously considered impossible, new experiments reveal

Using echolocation alone the bats found, identified and captured insects perched motionless and silent on the leaves of plants.

The post Common tropical bat uses echolocation with precision previously considered impossible, new experiments reveal appeared first on Smithsonian Insider.




experiment

In the wild, biodiversity’s power surpasses what experiments predict

Hundreds of experiments have shown biodiversity fosters healthier, more productive ecosystems. But many experts doubted whether these experiments would hold up in the real world. […]

The post In the wild, biodiversity’s power surpasses what experiments predict appeared first on Smithsonian Insider.




experiment

Asteroid Mission carries Student X-ray Experiment

At 7:05 pm (EDT), Thursday, Sept. 8, NASA plans to launch a spacecraft to a near-Earth asteroid named Bennu. Among that spacecraft’s five instruments is […]

The post Asteroid Mission carries Student X-ray Experiment appeared first on Smithsonian Insider.




experiment

Century-long Smithsonian experiment tests forest diversity

Tucked into the wooded landscape and rolling hills of the Smithsonian Environmental Research Center in Edgewater, Md., is a new forest. Six months ago, a […]

The post Century-long Smithsonian experiment tests forest diversity appeared first on Smithsonian Insider.




experiment

The many flavours of halogen bonds – message from experimental electron density and Raman spectroscopy

Experimental electron-density studies based on high-resolution diffraction experiments allow halogen bonds between heavy halogens to be classified. The topological properties of the electron density in Cl⋯Cl contacts vary smoothly as a function of the inter­action distance. The situation is less straightforward for halogen bonds between iodine and small electronegative nucleophiles, such as nitro­gen or oxygen, where the electron density in the bond critical point does not simply increase for shorter distances. The number of successful charge–density studies involving iodine is small, but at least individual examples for three cases have been observed. (a) Very short halogen bonds between electron-rich nucleophiles and heavy halogen atoms resemble three-centre–four-electron bonds, with a rather symmetric heavy halogen and without an appreciable σ hole. (b) For a narrow inter­mediate range of halogen bonds, the asymmetric electronic situation for the heavy halogen with a pronounced σ hole leads to rather low electron density in the (3,−1) critical point of the halogen bond; the properties of this bond critical point cannot fully describe the nature of the associated inter­action. (c) For longer and presumably weaker contacts, the electron density in the halogen bond critical point is only to a minor extent reduced by the presence of the σ hole and hence may be higher than in the aforementioned case. In addition to the electron density and its derived properties, the halogen–carbon bond distance opposite to the σ hole and the Raman frequency for the associated vibration emerge as alternative criteria to gauge the halogen-bond strength. We find exceptionally long C—I distances for tetra­fluoro­diiodo­benzene molecules in cocrystals with short halogen bonds and a significant red shift for their Raman vibrations.




experiment

Testing of a `hard' X-ray interferometer for experimental investigations

A new type of X-ray LLL interferometer, a `hard' interferometer, which has both a base and a `ceiling', is tested for experimental investigations. The tested interferometer has no preliminary uncontrollable moiré and can be used for object and deformation investigations.




experiment

Some experiments with antivirus software




experiment

Experiments illuminate key component of plants' immune systems




experiment

Ecological effects of deep-sea mining experiment still evident 26 years later

In 1989, researchers dragged a plough harrow across the seafloor of the Peru Basin to recreate some of the effects of deep-sea mining. Twenty-six years later, a new team of researchers returned to the site to assess whether there were any long-term ecological effects. They found that the seabed ecosystem remained disrupted, with significantly fewer suspension feeder species, such as anemones and sea sponges, than in undisturbed areas of seafloor. This suggests that deep-sea mining could cause irreversible changes to marine food webs in highly disturbed areas.




experiment

New interactive show in Harpenden will feature exciting science experiments

A new show, featuring incredible experiments from the world of science, is coming to Harpenden Public Halls this Easter.




experiment

Conducting science experiments behind bars

Unlocking the mysteries of science in the unlikeliest of places: Prison.



  • Research & Innovations

experiment

Fusion energy experiments inch closer to reality

Fusion energy has proven an elusive goal.




experiment

NASA's experimental lander explodes in test flight

An experimental, "green" NASA lander crashed during its first free-flight test on Aug. 9, erupting in a ball of flame when it hit the ground.




experiment

Experimental project to clean Pacific Ocean garbage patch

I've been covering the Great Pacific Garbage Patch for the past year or so and just wrote about it here on MNN last week.



  • Wilderness & Resources

experiment

Bees and fish 'talk' to each other in unprecedented interspecies experiment

Researchers working on the ASSISI project recently tested the limits of interspecies communication by constructing a makeshift robot translator.




experiment

U.S. puts an end to all experiments on chimps

After decades of testing, agency says 50 remaining chimps will be retired to a sanctuary.




experiment

Blog: Reverse mentoring – the experiment that got me thinking

Sharon Bishop, CEO at Close Brothers Premium Finance, discusses the lessons that leaders can learn from their staff.




experiment

Bedwetting: The Great Diaper Dependency Experiment

Is diaper dependency a real issue for bedwetting children? One family takes the plunge to see whether there's any legitimacy to the idea. Check out their results.




experiment

Lectrifi Planning to Debut Automotive WPT System in Silicon Valley Experiment

Lectrifi to test viability of cordless charging pads at corporate HQ car parks in Silicon Valley.




experiment

HYPE Launches the World's First Social Token + Economics (Tokenomics) Experiment

Consensus-driven Inflationary + Deflationary Token




experiment

Trustworthy Online Controlled Experiments: A Practical Guide to A/B Testing

The book Trustworthy Online Controlled Experiments: A Practical Guide to A/B Testing by Ron Kohavi (Microsoft, Airbnb), Diane Tang (Google) and Ya Xu (LinkedIn) is available for purchase, with the authors proceeds from the book being donated to charity.




experiment

Introducing Brain Simulator II: A New Platform for AGI Experimentation

A growing consensus of researchers contend that new algorithms are needed to transform narrow AI to AGI. Brain Simulator II is free software for new algorithm development targeted at AGI that you can experiment with and participate in its development.




experiment

The Zappos Holacracy Experiment

Ethan Bernstein, Harvard Business School professor, and John Bunch, holacracy implementation lead at Zappos, discuss the online retailer's transition to a flat, self-managed organization. They are the coauthors of the HBR article "Beyond the Holacracy Hype."




experiment

How to Set Up — and Learn — from Experiments

Stefan Thomke, professor at Harvard Business School, says running experiments can give companies tremendous value, but too often business leaders make decisions based on intuition. While A/B testing on large transaction volumes is common practice at Google, Booking.com, and Netflix, Thomke says even small firms can get a competitive advantage from experiments. He explains how to introduce, run, and learn from them, as well as how to cultivate an experimental mindset at your organization. Thomke is the author of the book "Experimentation Works: The Surprising Power of Business Experiments" and the HBR article "Building a Culture of Experimentation."




experiment

401- The Natural Experiment

In general, the coronavirus shutdowns have been terrible for academic research. Trips have been canceled, labs have shut down, and long-running experiments have been interrupted. But there are some researchers for whom the shutdowns have provided a unique opportunity—a whole new data set, a chance to gather new information, or to look at information in a new way. And so, this week, we’re bringing you stories very different academic fields, about researchers who are using this bizarre, tragic moment to learn something new about the world.

The Natural Experiment




experiment

How a tiny widget waylaid the world’s biggest science experiment

The tale of ITER’s missing shims shows how even the best-laid contingency plans have had to be rewritten.




experiment

Bureau of Reclamation News Release: Water experiment to be conducted along the Colorado River while maintaining hydropower production this summer

From May 1 through August 31, the Department of the Interior will conduct a Macro-invertebrate Production Flow at Glen Canyon Dam. This experiment, also known as a Bug Flow, aims to improve egg-laying conditions for aquatic insects, which are the primary food source for endangered and native fish in the Colorado River. https://www.nps.gov/grca/learn/news/bor-news-water-experiment-to-be-conducted-along-the-colorado-river-while-maintaining-hydropower-production-this-summer.htm




experiment

CSSplay - Responsive experimental 'viewport' layout

A second experimental CSS responsive single page website using 'viewport', suitable for all modern browsers and OS (fails in Safari PC)




experiment

CSSplay - Responsive experimental 'viewport' grid layout

Another experimental CSS responsive single page website using 'viewport' with a 3 x 3 grid, suitable for all modern browsers and OS (fails in Safari PC)




experiment

Necessary work: discovering old forests, new outlooks, and community on the H.J. Andrews Experimental Forest, 1948-2000.

The H.J. Andrews Experimental Forest (Andrews Forest) is both an idea and a particular place. It is an experimental landscape, a natural resource, and an ecosystem that has long inspired many people. On the landscape of the Andrews Forest, some of those people built the foundation for a collaborative community that fosters closer communication among the scientists and managers who struggle to understand how that ecosystem functions and to identify optimal management strategies for this and other national forest lands in the Pacific Northwest. People who worked there generated new ideas about forest ecology and related ecosystems. Working together in this place, they generated ideas, developed research proposals, and considered the implications of their work. They functioned as individuals in a science-based community that emerged and evolved over time. Individuals acted in a confluence of personalities, personal choices, and power relations. In the context of this unique landscape and serendipitous opportunities, those people created an exceptionally potent learning environment for science and management. Science, in this context, was largely a story of personalities, not simply a matter of test tubes, experimental watersheds, or top-down management sponsored by a large federal agency or university. Ideas flowed in a constructed environment that eventually linked people, place, and community with an emerging vision of ecosystem management. Drawing largely on oral history, this book explores the inner workings and structure of that science-based community. Science themes, management issues, specific research programs, the landscape itself, and the people who work there are all indispensable components of a complex web of community, the Andrews group. The first four chapters explore the origins of the Forest Service decision to establish an experimental forest in the west-central Oregon Cascades in 1948 and the people and priorities that transformed that field site into a prominent facility for interdisciplinary research in the coniferous biome of the International Biological Programme in the 1970s. Later chapters explore emerging links between long-term research and interdisciplinary science at the Andrews Forest. Those links shaped the group's response to concerns about logging in old-growth forests during the 1980s and 1990s. Concluding chapters explore how scientists in the group tried to adapt to new roles as public policy consultants in the 1990s without losing sight of the community values that they considered crucial to their earlier accomplishments.




experiment

Large-scale silviculture experiments of western Oregon and Washington

We review 12 large-scale silviculture experiments (LSSEs) in western Washington and Oregon with which the Pacific Northwest Research Station of the USDA Forest Service is substantially involved. We compiled and arrayed information about the LSSEs as a series of matrices in a relational database, which is included on the compact disc published with this report and available online at http://www.fs.fed.us/pnw/research/lsse. The LSSEs are both spatially and temporally large scale, with experimental treatment units between 5 and 100 acres and proposed study durations of 20 to 200 years. A defining characteristic of the LSSEs is that a broad range of response variables are measured to characterize the response of forest ecosystems to experimental treatments. We discuss the general value and limitations of the LSSEs and highlight some possible roles that can be played by the LSSEs in addressing management issues emerging at the beginning of the 21st century.




experiment

Precommercial thinning: implications of early results from the Tongass-Wide Young-Growth Studies experiments for deer habitat in southeast Alaska.

This report documents the results from the first “5-year” round of understory responses to the Tongass-Wide Young-Growth Studies (TWYGS) treatments, especially in relation to their effects on food resources for black-tailed deer (Odocoileus hemionus sitkensis). Responses of understory vegetation to precommercial silviculture experiments after their first 4 to 8 years posttreatment were analyzed with the Forage Resource Evaluation System for Habitat (FRESH)-Deer model. The studies were conducted in western hemlock (Tsuga heterophylla)-Sitka spruce (Picea sitchensis) young-growth forests in southeast Alaska. All four TWYGS experiments were studied: (I) planting of red alder (Alnus rubra) within 1- to 5-year-old stands; (II) precommercial thinning at narrow and wide spacings (549 and 331 trees per hectare, respectively) in 15- to 25-year-old stands; (III) precommercial thinning at medium spacing (420 trees per hectare) with and without pruning in 25- to 35-yearold stands; and (IV) precommercial thinning at wide spacing (203 trees per hectare) with and without slash treatment versus thinning by girdling in >35-year-old stands. All experiments also included untreated control stands of identical age. FRESHDeer was used to evaluate the implications for deer habitat in terms of forage resources (species-specific biomass, digestible protein, and digestible dry matter) relative to deer metabolic requirements in summer (at two levels of requirements—maintenance only vs. lactation) and in winter (at six levels of snow depth).




experiment

An Experimental Study of Reduced-Voltage Operation in Modern FPGAs for Neural Network Acceleration. (arXiv:2005.03451v1 [cs.LG])

We empirically evaluate an undervolting technique, i.e., underscaling the circuit supply voltage below the nominal level, to improve the power-efficiency of Convolutional Neural Network (CNN) accelerators mapped to Field Programmable Gate Arrays (FPGAs). Undervolting below a safe voltage level can lead to timing faults due to excessive circuit latency increase. We evaluate the reliability-power trade-off for such accelerators. Specifically, we experimentally study the reduced-voltage operation of multiple components of real FPGAs, characterize the corresponding reliability behavior of CNN accelerators, propose techniques to minimize the drawbacks of reduced-voltage operation, and combine undervolting with architectural CNN optimization techniques, i.e., quantization and pruning. We investigate the effect of environmental temperature on the reliability-power trade-off of such accelerators. We perform experiments on three identical samples of modern Xilinx ZCU102 FPGA platforms with five state-of-the-art image classification CNN benchmarks. This approach allows us to study the effects of our undervolting technique for both software and hardware variability. We achieve more than 3X power-efficiency (GOPs/W) gain via undervolting. 2.6X of this gain is the result of eliminating the voltage guardband region, i.e., the safe voltage region below the nominal level that is set by FPGA vendor to ensure correct functionality in worst-case environmental and circuit conditions. 43% of the power-efficiency gain is due to further undervolting below the guardband, which comes at the cost of accuracy loss in the CNN accelerator. We evaluate an effective frequency underscaling technique that prevents this accuracy loss, and find that it reduces the power-efficiency gain from 43% to 25%.




experiment

Experimental Biomass Harvest a Step Toward Sustainable, Biofuels-Powered Future

By Jeff Mulhollem Penn State News The first harvest of 34 acres of fast-growing shrub willow from a Penn State demonstration field this winter is a milestone in developing a sustainable biomass supply for renewable energy and bio-based economic development, … Continue reading




experiment

Experiment manager for manycore systems

An execution environment may have a monitoring, analysis, and feedback loop that may configure and tune the execution environment for currently executing workloads. A monitoring or instrumentation system may collect operational and performance data from hardware and software components within the system. A modeling system may create an operational model of the execution environment, then may determine different sets of parameters for the execution environment. A feedback loop may change various operational characteristics of the execution environment. The monitoring, analysis, and feedback loop may optimize the performance of a computer system for various metrics, including throughput, performance, energy conservation, or other metrics based on the applications that are currently executing. The performance model of the execution environment may be persisted and applied to new applications to optimize the performance of applications that have not been executed on the system.




experiment

The Data Science of Experimental Design

Interested in learning how to create an online experiment that helps you better understand your business? This course can help you get up to speed. Instructor Monika Wahi shows learners without a background in experimental design how to build an A/B test for a web page, run the test, analyze the data, and make decisions based on the results of the test. Monika begins by explaining exactly what A/B testing is and under what circumstances it is useful. She then covers potential strategies for increasing conversion rates, as well as how to choose both A and B conditions for testing. Next, she explains how to define conversion rates and develop and document case definitions, conduct a baseline analysis in Excel and, based on the results of the analysis, design an A/B test. Plus, she demonstrates how to conduct a chi-square test in Excel and get a sample size estimate using G*Power.




experiment

Apple sticker shock? Try this simple experiment – look at Razer’s configuration page

Sometimes an online configuration and spec sheet is worth 1000 words. And yeah, if you want to see why some users in the pro market are switching OSes - this sums it up.

The post Apple sticker shock? Try this simple experiment – look at Razer’s configuration page appeared first on CDM Create Digital Music.




experiment

China says experimental spaceship operating normally


BEIJING (AP) — A Chinese spaceship is working normally in orbit, with its solar panels in position and a communication link established, the government said Thursday. The craft was launched aboard a new heavy-lift carrier rocket, the Long March 5B, from Hainan island Tuesday. It’s on a experimental mission without any crew, but the capsule […]




experiment

China says experimental spaceship operating normally


BEIJING (AP) — A Chinese spaceship is working normally in orbit, with its solar panels in position and a communication link established, the government said Thursday. The craft was launched aboard a new heavy-lift carrier rocket, the Long March 5B, from Hainan island Tuesday. It’s on a experimental mission without any crew, but the capsule […]




experiment

‘We’re in this human experiment’: UW researchers study effects of coronavirus social isolation


The study will add a "real-time" element to what UW researchers already know about social isolation, loneliness and their related health risks.






experiment

'You can't change the nappies from 2m away': The reality for those left behind in the working-from-home experiment

Six weeks into the biggest shakeup of the Australian workplace since World War II, one economist is warning the adjusted work arrangements could be widening inequalities among workers.




experiment

Greg McLean on The Belko Experiment

Director Greg McLean (Wolf Creek) joins CJ to discuss his latest, a horror / comedy hybrid called The Belko Experiment, opening September 21.



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