National Zoo Veterinarian Katharine Hope treats about 2,000 animals from 400 different species. She and her colleagues care for a variety of animals, from small baby flamingos to adult Asian elephants, so there's no such thing as an average day.

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The post How do paleontologists identify dinosaur teeth? Smithsonian Curator Matthew Carrano identifies Cretaceous dinosaur teeth from the Washington D.C. area. appeared first on Smithsonian Insider.

The post Learn about the ash that comes from volcanoes with Dr. Liz Cottrell, a geologist from the National Museum of Natural History appeared first on Smithsonian Insider.

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This film is from the collections of the Human Studies Film Archives, Smithsonian Institution. Clip from silent film, Beautiful Japan (1917-18), by travel-lecturer Benjamin Brodsky. Benten Festival is celebrated on Shiraishi Island. Benten (Benzaiten) is the Goddess of the Sea and one of the Seven Lucky Gods of Japan.

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Clip from silent edited film "Bryson Jones Travelogue: Lure of the West" (ca. 1927) shows Mount Rushmore National Memorial under construction, including blasting off cliff face, scaffolding, men working, and the completed monument.

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Silent black & white archival film clip from "Japan: Promotional and Theatrical Footage, ca. 1927". The full film, which is 17 minutes long, includes segments from what are believed to be a theatrical film, a promotional film and, possibly, amateur film - all of unknown origin.

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The post How do paleontologists reconstruct environments from the ancient past? appeared first on Smithsonian Insider.

The post Samuel P. Langley, Secretary of the Smithsonian, and his development of the ill-fated Aerodrome A appeared first on Smithsonian Insider.

Learning from the forest. Setting up a long-term forest research plot in a tropical dry forest in the heart of Panama City. Click here for […]

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The Smithsonian has launched an ambitious project to scan millions of items and make them available to the world on a searchable database. CBS reporter […]

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Linn Meyers (American, b. Washington, D.C., 1968; lives and works in Washington, D.C.) created her largest work, “Our View From Here,” at the Smithsonian’s Hirshhorn […]

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Happy Holidays from the Smithsonian’s National Air and Space Museum!

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Yesterday, we heard about the hyper-loop, a system that could get you from L.A. to San Francisco in about 30 minutes without losing your eyeballs.

Steve Julian: Business analyst Mark Lacter, that might come in handy given how crowded California's air corridor has become...

Mark Lacter: We'll talk about the hyper-loop in a moment, Steve, but yes, the L.A.-to-San Francisco air route is the busiest in the U.S., and it's already the most competitive.  We're talking about more than 50 flights a day, which - if you spread them out between six in the morning and 10:30 at night - there'd be one flight every 20 minutes.  But, Delta obviously thinks there's room for more because it's announced an hourly shuttle between the two cities.  That's another 14 daily flights beginning September 3.  The airline will be using a somewhat smaller jet, and it sounds as if the focus will be on the business traveler, with free newspapers, wine, and beer.

Julian: How much will it cost, do we know?

Lacter: As usual, it's a lot cheaper if you make an advance purchase, but if you're buying your tickets at the last minute - which is what a lot of business travelers do - roundtrip runs a hefty $430.  Actually, this Bay Area shuttle is just the latest effort by Delta to expand out of LAX, which is different from other major airports in that it doesn't have any one airline that dominates (United has a slight edge in market share over American, with Delta about three percentage points behind).  American also has been adding flights out of LAX.

Julian: Sounds like the airline business is improving...

Lacter: That's what happens when you pack planes to the absolute max, which is bad news for travelers being crammed into coach seats.  But it's good news for LAX, which continues to be the airport of choice among airlines looking to add service - matter of fact, domestic passenger traffic was up almost 8 percent in June compared with a year earlier.  Some of those gains might be at the expense of service elsewhere - most especially Ontario Airport, which has seen a big exodus among airlines and passengers.  Ontario city officials have been trying to regain control of the airport, which has been operated by the city of Los Angeles.

Julian: Back to the hyper-loop - is this kind of transport possible?

Lacter: Well, it's the brainchild of billionaire Elon Musk, and you never say never with this guy.  He started the electric car company Tesla and the private space company Space X.  The hyper-loop is a high-speed system of passenger pods that would travel on a cushion of air (think of air hockey table).  The pods would travel at more than 700 miles per hour, but they wouldn't result in sonic booms that severely restricted the Concorde aircraft.  Of course, anything that promises super-speed travel is bound to get people talking - and, from what the physics professors are saying, the Musk idea seems feasible.

Julian: How would its cost compare to the bullet train?

Lacter: He says a lot cheaper.  The price tag on the train is $70 billion at last check; Musk says he can do his for $6 billion.  But, the issue isn't so much the cost or even the technology, but the politics.  As a rule, governments do not think outside the box, and that's what a project like this is all about.  Already, you have bullet train supporters saying that the hyper-loop is impossible, but what they're really saying is we have a lot riding on the train, and we don't want this guy to mess it up.

Julian: But, how much demand is there for high-speed transport?

Lacter: You'd think there would be a lot, but when Boeing came up with a nifty idea for a souped-up plane that would shave almost an hour from L.A. to New York, the airlines said no because it would require more fuel - and that would mean raising fares.  Musk says his system would be a lot cheaper than traveling by plane, which could be a game changer in the attitudes about going places.  But, those attitudes won't change until the thing is actually built, and that can't realistically happen until attitudes change.  That's the ultimate problem.

Julian: Hence, why we're content to squeeze into coach.

Lacter: Yep.

Mark Lacter is a contributing writer for Los Angeles Magazine and writes the business blog at LA Observed.com.

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

Power App is a Google Chrome extension that has a description of "This extension configures your Default Search to Power App (searchpowerapp.com)".

This article was published first at Remove the Power App Chrome Extension

Flash App+ is a Google Chrome extension that has a description of "This extension configures your Default Search to Flash App+ (searchpowerapp.com)".

This article was published first at Remove the Flash App+ Chrome Extension

Wisip is a Google Chrome extension that has a description of "This extension configures your Default Search to Smash Search (srchus.xyz)".

This article was published first at Remove the Wisip Chrome Extension

Botanists Gerhard Zotz of the Smithsonian Tropical Research Institute and Stefan Wester of the University of Oldenburg in Germany decided to take a closer look at these high-wire bromeliads. They were interested to find out how the growth and survival rates of these plants on electrical cables compared to the growth and survival of plants of the same species growing in trees--their natural environment.

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Recent analysis using DNA sequencing of ancient Roman pills found aboard a ship that sank in Italy’s Gulf of Baratti between 140 -120 B.C, has revealed that the medicines consist of material from simple garden plants, namely carrot, radish, parsley, celery, wild onion and cabbage.

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“Orchids: A View from the East,” a joint exhibition by Smithsonian Gardens and the U.S. Botanic Garden, opens at the Smithsonian’s National Museum of Natural History […]

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This 1950 Federal Bureau of Investigation photo shows T. Dale Stewart, M.D., Curator of Physical Anthropology, in his office at the Smithsonian’s National Museum of […]

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When you’re caught under the mistletoe, the tradition is to kiss the person next to you. But this holiday season you may want to wow them first with some cool mistletoe facts from Smithsonian botanist Sylvia Orli.

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The move enhances coordination efforts for the 46-plot research network, which partners with more than 75 institutions in 21 countries.

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Going for the gut will soon become standard protocol for scientists working to unravel the complex living web of interactions between plants and animals on […]

The post Going for the gut: DNA from beetle stomachs reveals complex network appeared first on Smithsonian Insider.

With net in hand and eyes peeled, Mauren Turcatel spent two-weeks last October chasing blood-thirsty predators through the Amazon jungle of Brazil. One-by-one they appeared […]

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New results from a long-term Smithsonian study are providing strong evidence of the dramatic impact high numbers of white-tailed deer (Odocoileus virginianus) are having upon […]

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Profound ideas don’t need to be complicated. A simple cube made of aluminum tubing, a centerpiece of a new exhibit “Life in One Cubic Foot,” […]

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In the dark recesses of an underground fungus garden, a Panamanian leaf-cutting ant plucks a tuft of mycelia, the wispy part of the basidiomycete fungus […]

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If you’ve seen the movie Jurassic Park, you know that amber played a significant role in rebuilding a lost world: A mosquito trapped within its […]

The post Resin from shipwreck hints at trade routes and botany of ancient Asia appeared first on Smithsonian Insider.

Coral reefs are home to some of the most colorful, diverse life on the planet. And yet, for all their fame as biodiversity hotspots, it’s […]

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How specific fungi interact with seeds in tropical forest soils may be the ultimate arbiter in the struggle for survival among tropical trees. “Depending on […]

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This work presents a technique for extracting the detailed shape of peaks with extended, overlapping tails in an X-ray powder diffraction pattern. The application discussed here concerns crystallite size broadening, though the technique can be applied to spectra of any origin and without regard to how the profiles are to be subsequently analyzed. Historically, the extraction of profile shapes has been difficult due to the complexity of determining the background under the peak, resulting in an offset of the low-frequency components of the Fourier transform of the peak known as the `hook' problem. The use of a carefully considered statistical weighting function in a non-linear least-squares fit, followed by summing the residuals from such a fit with the fit itself, allows one to extract the full shape of an isolated peak, without contributions from either the background or adjacent peaks. The extracted shape, consisting of the fit function recombined with the residuals, is not dependent on any specific shape model. The application of this to analysis of microstructure is performed independently of global parametric models, which would reduce the number of refined parameters; therefore the technique requires high-quality data to produce results of interest. The effectiveness of the technique is demonstrated by extraction of Fourier transforms of peaks from two sets of size-broadened materials with two differing pieces of equipment.

It is shown how to reconstruct the stacking sequence from the pairwise correlation functions between layers in close-packed structures. First, of theoretical interest, the analytical formulation and solution of the problem are presented when the exact pairwise correlation counts are known. In the second part, the practical problem is approached. A simulated annealing procedure is developed to solve the problem using as initial guess approximate solutions from previous treatments. The robustness of the procedure is tested with synthetic data, followed by an experimental example. The developed approach performs robustly over different synthetic and experimental data, comparing favorably with the reported methods.

Diffuse scattering is a rich source of information about disorder in crystalline materials, which can be modelled using atomistic techniques such as Monte Carlo and molecular dynamics simulations. Modern X-ray and neutron scattering instruments can rapidly measure large volumes of diffuse-scattering data. Unfortunately, current algorithms for atomistic diffuse-scattering calculations are too slow to model large data sets completely, because the fast Fourier transform (FFT) algorithm has long been considered unsuitable for such calculations [Butler & Welberry (1992). J. Appl. Cryst. 25, 391–399]. Here, a new approach is presented for ultrafast calculation of atomistic diffuse-scattering patterns. It is shown that the FFT can actually be used to perform such calculations rapidly, and that a fast method based on sampling theory can be used to reduce high-frequency noise in the calculations. These algorithms are benchmarked using realistic examples of compositional, magnetic and displacive disorder. They accelerate the calculations by a factor of at least 102, making refinement of atomistic models to large diffuse-scattering volumes practical.

Simulink might produce an incorrect sorted order for a model that meets all of the following conditions:

• The model contains blocks from the SoC Blockset
• The Signal logging option is selected in the model configuration set
• Signals using asynchronous sample time are configured for logging