OAKLAND – Unlike the Kardashians, Simon Cowell and Donald Trump, Warriors star Stephen Curry has vowed not to break this self-imposed rule.“I never want to have a reality show of my life,” Curry told Bay Area News Group.So when he weighed his latest venture with Facebook Watch, Curry admitted feeling “very skeptical” on agreeing to the project. He only did so once he realized this could be another platform to highlight his storied NBA career, while also promoting his Christian faith and …
(Visited 35 times, 1 visits today)FacebookTwitterPinterestSave分享0 Stunning admissions show that secular astronomers can’t keep Saturn’s moons billions of years old.Elizabeth Howell printed the shocking headline on Space.com: “Saturn’s Moons and Rings May Be Younger Than the Dinosaurs,” based on modeling done by the SETI Institute. David Rothery on The Conversation echoed the refrain, adding, “So could life really exist there?” His answer is maybe; more about this below.Really, though, why the change in thinking? The SETI Institute press release explains:New research suggests that some of Saturn’s icy moons, as well as its famous rings, might be modern adornments. Their dramatic birth may have taken place a mere hundred million years ago, more recent than the reign of many dinosaurs.“Moons are always changing their orbits. That’s inevitable,” says Matija Cuk, principal investigator at the SETI Institute. “But that fact allows us to use computer simulations to tease out the history of Saturn’s inner moons. Doing so, we find that they were most likely born during the most recent two percent of the planet’s history.”While Saturn’s rings have been known since the 1600s, there’s still debate about their age. The straightforward assumption is that they are primordial – as old as the planet itself, which is more than four billion years. However, in 2012, French astronomers found that tidal effects – the gravitational interaction of the inner moons with fluids deep in Saturn’s interior – are causing them to spiral to larger orbital radii comparatively quickly. The implication, given their present positions, is that these moons, and presumably the rings, are recent phenomena.The new estimates do not apply to the more distant moons like Titan and Iapetus. But to keep the inner moons so close to Saturn, especially the smaller ones and the rings, they can’t have survived tidal effects and resonances since the assumed age of Saturn (4.5 billion years). The results are published in the Astrophysical Journal (subscription required; see preprint on arXiv). The press release explains the assumptions behind the model:To get a more specific value for the ages of these moons, Cuk used ice geysers on Saturn’s moon Enceladus. The researchers assumed that the energy powering those geysers comes from tidal interactions with Saturn and that the level of geothermal activity on Enceladus has been constant, and from there, inferred the strength of the tidal forces from Saturn.Using the computer simulations, the researchers concluded that Enceladus would have moved from its original orbital position to its current one in just 100 million years — meaning it likely formed during the Cretaceous period. The larger implication is that the inner moons of Saturn and its gorgeous rings are all relatively young.That’s one way to explain the Enceladus geysers; reduce their age. The authors seem to realize that Enceladus couldn’t be blowing chunks for billions of years. But how are they going to keep the rest of the Saturn system old? Here’s where a little imagination works wonders:“So the question arises, what caused the recent birth of the inner moons?” asks Cuk. “Our best guess is that Saturn had a similar collection of moons before, but their orbits were disturbed by a special kind of orbital resonance involving Saturn’s motion around the Sun. Eventually, the orbits of neighboring moons crossed, and these objects collided. From this rubble, the present set of moons and rings formed.”If this result is correct, Saturn’s bright rings may be younger than the heyday of the dinosaurs, and we are fortunate to witness them today.Others aren’t so willing to invoke ad hoc circumstances to make Enceladus young. Edwin Kite and Allan Rubin published a new theory in PNAS about tidal resonances keeping the cracks open down to the moon’s presumed subsurface ocean. Science Daily describes how Kite and Rubin claim to have found the “sweet spot” between tidal forces:“It’s a puzzle to explain why the fissure system doesn’t clog up with its own frost,” Kite said. “And it’s a puzzle to explain why the energy removed from the water table by evaporative cooling doesn’t just ice things over.“What’s needed is an energy source to balance the evaporative cooling. “We think the energy source is a new mechanism of tidal dissipation that had not been previously considered,” Kite said.It’s a finely balanced Goldilocks situation, Elizabeth Howell writes for Space.com:The new model suggests that deep vertical “slots” may be located between the icy surface of Enceladus and the water below. If the slots were wide, the eruptions would happen very soon after the tidal force goes into effect, the researchers say. If the slots were narrow, the tidal forcing would take longer. The observed delay of 5 hours comes from a size of slot that is somewhere in between, the scientists said.“In between, there’s a sweet spot,” Kite said.The paper claims this could keep the geysers going over “geological timescales.” Atheist imaging scientist and ring expert Carolyn Porco seems to like this theory, according to NASA’s Astrobiology Magazine. But when you read the paper looking for how long those timescales are, they only mention “million-year timescales,” not billions. A million years is only 1/4,500th the assumed age of the solar system (A.S.S.). None of them explain that. They do, however, want to keep Enceladus active long enough to give life a chance:The sustainability of water eruptions on Enceladus affects the moon’s habitability (e.g., ref. 16), as well as astrobiology (follow-up missions to Enceladus could be stymied if the plumes shut down).David Rothery’s worldview is showing on The Conversation in his reaction to the youth of Saturn’s moons. If Enceladus is so young, he speculates, would there be time for life to evolve there?I think it is still worth looking. Scientists have found hints that some kind of life could have existed on Earth 4.1 billion years ago – when the planet was very young. What’s more, if Enceladus really does date back only to the Cretaceous era and were found to have its own life already, then this would make life throughout the cosmos even more likely.Titan has been in the news a lot recently. We’ll report on the latest findings in a coming post.The answer to “Are Saturn’s Moons Younger than the Dinosaurs?” is no; they’re both the same age, because they were created not that long ago. The dinosaurs just kicked the bucket sooner. Saturn’s moons cannot last billions of years, or even millions; in time, they will go extinct, too.It is flagrantly obvious that no amount of evidence can shake the secularists off their unfeigned devotion to moyboy timescales. Here’s a geysering moon they know cannot keep pumping water out its south pole for billions of years. So what do they do? They either ignore it, distract attention to whether life exists in the water there (hydrobioscopy), or invent new scenarios where old moons crack up and new ones form (post hoc, begging the question). The storytelling will continue until the Temple of Darwin collapses and, with it, secularism’s utter dependence on billions of years. Creationists are not so encumbered.
A camera, an internet connection and a desire to be in front of the camera is all you need to begin vlogging. (Image:Tamur Madjerey).• Caspar Lee, South Africa’s 20-year-old YouTube millionaire • South Africa drives Africa’s internet traffic • Mobile phone boost to African internet • South Africa online • SA web users to double by 2014 Sulaiman PhilipVlog (noun): A blog in which the postings are primarily in video form. Since 2011 it has been a point-scoring word in Scrabble. The South African vlogging population is growing. Slowly. But it is giving South Africans, mostly young, an opportunity to share their world with the universe.There are older South African vloggers, says Gabriel Erasmus, but the majority tend to be younger. Erasmus is the creator of the youtubestars.co.za website and a member of the South African Facebook vlogging group. “Age is not a factor. If you have a camera, internet connection, a love for filmmaking or just love being in front of a camera you are sorted,” he continues.These young, and young at heart, South Africans are in the vanguard of an internet movement that has been growing over the past decade. It is the evolution from the ubiquitous bloggers, and involves the uploading of personal video clips of everything from beauty and fashion tips to raging about language and homesickness.Henri Himschoot was one of the first South African vloggers. The Cape Town musician began his The Himschoots vlog in 2010. A period of inactivity that lasted for a few years came to an end when he discovered the YouTube South Africa Facebook group. When he joined in April 2014, there were 80 members; there are now 291 and the number grows daily. “The community is extremely diverse, but you have to get to know us and understand how we all fit together to make one big happy South African family. Not one of us competes with the other, we all support each other and that’s what makes us succeed.” Communication toolRuben Mostert was the shy kid at school who had trouble making friends. Vlogging became his outlet and means of communicating with others. The longer he vlogged the more confident and comfortable he became in his own skin. “The best of all, my personality in front of the camera has evolved into my daily life. Why do I like vlogging? You can escape the real world with all the bad things going on and create your own world and share it. Call it my fantasy world if you want.”Author Michael Kaminsky traces the birth of vlogging to 2000 and Adam Kontras’s dream of a Hollywood career. Driving across the United States, he posted a video to accompany the blog of his trip. By 2008, vlogging helped elect an American president. Will.i.am’s Yes We Can used a speech by candidate Barack Obama to create a powerful vlog viewed more than 25 million times.Will.i.am’s vlog is slick and professional, but the popularity of vlogging is down largely to the ease with which people can shoot and upload videos. “To start you don’t need fancy equipment or expensive software. You can start with a smartphone and the basic video editing software that comes pre-installed with all major operating systems. All the skills needed are even taught in schools nowadays. In the end good content exceeds the need for expensive equipment and fancy editing.” Global online communityVlogs are part of a larger online movement that has given birth to online global communities. These communities are built on the idea that users are not docile recipients of content but are actively shaping their experience.Vlogger Kristen van Niekerk believes that technology is changing the way we communicate. The world has moved from writing letters to sending emails; phone calls have been replaced by video calls. “Writing is still the basis of all communication and won’t be replaced by video, but video does improve how we communicate. Our education system should adapt to technological advances, offer to teach skills to those who want to learn. Not everyone wants a life filled with technology, but the choice should be available.”YouTube has grown from its first video in 2005 to become a repository of videos of cute kittens, conspiracy theories and a new kind of entrepreneur. It is a hub of raw, soon to be discovered talent, a place that allows for experimentation and creativity that is changing the way traditional media interact with audiences.YouTube vlogger Michelle Phan has over 700 million views of her personal channel, a makeup demonstration channel that grew from a blog. That is as many people who turn on their TVs to watch the World Cup, all of whom want to watch a 27-year-old teach them how to apply lipstick like Miley Cyrus.In a 2012 MacTaggart lecture, media and TV executive Elisabeth Murdoch pointed out that YouTube was beginning to behave like a market leader. “Believe at your own risk that the platform is based on homemade videos of cats in washing machines… Brands and talent are using YouTube to create direct-to-consumer relationships.”Vloggers had developed a new way of creating content and interacting with an audience, which made them attractive to companies. The history of vlogging is full of stories of products mentioned on popular channels that sell out within days, if not hours. South African vloggersSouth Africa vloggers do not generate that kind of hysteria or have the fan base to do that, just yet. Sara Mormino, a director at YouTube, in an interview with the Guardian newspaper explained the attraction of vloggers to companies. She began by explaining that the earning capacity of English vloggers had increased by 60% in 2013, in large part thanks to mobile phones. “These young people have really captured a new way of creating content and a new way of engaging an audience.”South African vlogger Rachel Kopel says even YouTube stars never began vlogging intending to make money or become famous. She has been producing content for three years and believes that she is still learning to create great content. She does it because she is passionate about her topic and wants to share her opinions with the world. “We are living in a very self-absorbed generation, where everyone is taking selfies and promoting themselves. YouTube is a way of promoting yourself and creating a name and reputation for yourself. You must just hope that you are doing it for the right reasons.”As South Africa’s connectivity speeds increase and software becomes more accessible, the number of South Africans going online will increase. As we mature as technology users, how South Africans use the web will change. We will begin looking for more individual experiences or communities that share our interests. South African vloggers are building a collective memory bank to share about the South African experience.Being criticised, earning support, the frustrations of dealing with South African upload speeds, getting views, even making bloopers, are part of the adventure, say Marco and Elmar, who vlog as ThoseBroz. “You find a community that allows you to express yourself and where you can paint a picture of who you are, and share it with the world. The journey from your first video, straight up to your 20th-plus video, is simply one of the most amazing adventures any person can take,” they explain.
Share Facebook Twitter Google + LinkedIn Pinterest We are dry again today, but we are adding a little more moisture potential to our forecast starting tomorrow. Today we should be sunny and warm statewide, with temps getting back close to normal. High pressure is moving off to the east, allowing for south flow to dominate. Rain starts tomorrow, mostly midday to early afternoon. Action still looks to be the best as we start off to the south and western parts of the state, and through the day we may end up seeing the biggest rain totals from I-70 southward. However, a second wave of action will be developing off to our west later tomorrow afternoon and evening, and as it moves east, we have to keep an eye on thunderstorms overnight tomorrow night, particularly in the western half and NW quarter of the state. We think that most of the state can see .25”-1” tomorrow and tomorrow overnight. Then for the weekend, we still see some good lingering moisture. However, the focal point of the wrap around moisture behind the front seems to want to shift back west here over the past couple of forecast model runs. This is not enough to take rains out of Ohio, but we may see more holes develop, particularly over the eastern third to quarter of Ohio through Sunday. Right now, the additional weekend moisture may be able to add another .25”-1” to about 75% of Ohio, bringing rainfall totals for the combined 3 day window to up to 2” over 80% of the state by the time we get to sunrise Monday morning. The map below gives an idea of our combined moisture thoughts of the weekend this morning. We still look dry for all of next week, Monday through Friday. However, temperatures do not look to be a big story. We spend most of next week near normal. Temperatures this weekend will be below normal as the rains and that front move through. The extended period has a system moving in from the west and northwest late the 28th into the 29th with rain potential of around half and inch. Another system is slated for the 31st into the 1st that can be produce similar results. We have pulled rains from those systems back to the lower end of our previous forecast ranges this morning.
Every filmmaker is familiar with image noise, but what are its frequencies, and what’s really going on when we clean it up?Video footage at its most fundamental is the recording, storing, and playback of light waves reflecting off of objects in the frame. The light waves then strike one of millions of photo-sensitive pixels that stores the charge of the wave before transferring that data to specialized hardware for interpretation and assembly of the final image.As a result of this imaging process, each pixel is subject to faulty inputs caused by any number of sources of image noise. Ranging from cosmic radiation to over-volting the sensor, all noise essentially overwrites the information you were trying to capture at each affected pixel.There are plenty of methods for handling this noise, both at the hardware and software levels, but the technology behind these tools goes largely unexplored by the average filmmaker.Today, we’re taking the scenic route. Let’s take an in-depth look at one of the most prevalent noise reduction techniques and see if there is a way to mimic its results manually. At the very least, we should get a better idea for what our tools are doing under the hood.Spatial Noise ReductionMost video noise reduction techniques fall into one of two categories: spatial and temporal. As the names suggest, spatial noise reduction deals with noise across each pixel of each frame, whereas temporal noise reduction examines multiple frames to determine whether pixel readout is intended or a result of image noise.Because spatial noise reduction addresses each frame individually, its results should be the easiest to replicate manually.The primary way most programs implement spatial noise reduction is by analyzing the frequencies of the recorded light from each pixel block. This is because noise has different characteristics depending on the frequency of the affected pixel.High, Medium, and Low Noise FrequenciesRegardless of type, all video noise breaks down into one of three categories based on how the noise manifests in the footage: high-, medium-, or low-frequency.The sharp, staticy nature of high-frequency noise is usually the most noticeable, but patchy medium- and splotchy low-frequency noise will affect your footage just as much.Let’s look at two clips with noise problems and manually select and bring down the visibility of the noise.We’re starting out with an example from a short I shot on super 16 several years back. I underexposed it a fair bit for effect, but during the film transfer, the film grain turned into irritating digital noise across most of the frame.I’ve brought the exposure up a bit for the actress — and also to make spotting the noise frequencies a bit easier. For this shot, we’ll bring up the levels on our actress and then do our best to turn all of the noisy pixels to black.SelectingThe tool we’re using to select specific regions of noise today is the HSL/Secondary tab in the Lumetri Color Panel.When selecting your footage, make sure to ask yourself a few questions: What color is the noise I want to target? How intense are the colors? Is the area primarily highs, lows, or mids?I’ve duplicated the video three times for each noise frequency.To select the blocky dark blue low-frequency noise, I have targeted all colors with the exception of the red and orange skin tones in the Hue qualifier. I also selected the top 10 percent or so of the Saturation qualifier before sliding the feather all the way to the left to create a soft falloff of color tones. Finally, I selected the bottom third of the Luminance qualifier.For the splotchy lighter-blue, medium-frequency noise, I’ve selected yellow to magenta in Hue, the top 25 percent of Saturation with falloff to about the 50 percent mark, and then the bottom third of the Luma.To isolate the bright, starry pixels in the high-frequency noise, I targeted the cyan tones of the high-frequency noise, selected the full saturation range, and then isolated from about 35-65 percent on the Luma controls.Now that we’ve selected each frequency of the noise, we’re going to adjust the levels and color balance of our selections to turn the problematic pixel blocks as close to black as we can get them.I slightly denoised and blurred the low-frequency clip to create a bit of feathering for the low selection before bringing the levels down about 30 percent, warming the selection and pushing the tint to green. I fine-tuned my results by slightly sharpening and then fully desaturating the selection.For the medium selection, I pushed the temperature to 100 and pulled the tint almost all the way over to green before bumping the contrast up about halfway and then fully de-saturating.For the high-frequency noise, it was important to denoise the selection, as the type of noise we’re targeting has a very small radius. Denoising the selection helps to open the mask up a little bit.I denoised slightly, pushed temperature fully to orange and tint fully to green, pumped the contrast to 85, blurred slightly, and then fully desaturated.To finalize our color blends, we’re stacking all of the duplicated and repaired tracks on top of a medium-gray color matte. I stacked highs on the top track, mids on middle, and lows on the bottom. For the lows, I selected the Vivid opacity blend mode and set the opacity to 95 percent. For the mids, the blend mode was Overlay set to 60 percent, and highs were set to Multiply at 35 percent.From there, I nested the three separated tracks and made a few tweaks to the levels until I found the best look. All that’s left now is to compare the results with a copy of the original with similar adjustments to see if all this extra work paid off.BeforeAfterI think there’s a pretty clear difference between the two — ours comes out a little ahead.The first example was a little easy because we essentially only needed to turn every noise pixel into a black one. Let’s take a look at a more realistic use case, wherein we will need to blend the results into the good parts of the frame.In this shot, we have a substantial amount of high-frequency noise in the Luminance channel and a fair amount of mid- and low-frequency noise in the green channel.To select the low-frequency noise, I used the Hue qualifier to select all tones except for reds and oranges, selected the top 40 percent or so of the Saturation qualifier with a small 5 percent or so falloff towards the shadows, and then isolated the bottom 25 percent or so of the Luma qualifier with some softening on either side.To repair, I denoised the selection at 50, blurred the selection slightly, used the three-way color corrector to boost shadows, cut mids, and slightly pulled back on the highs. I warmed and pushed the tint to magenta before pushing contrast to 20, blurring softly and then reducing saturation to 70.For the mids, I used the Hue qualifier to select all colors but orange and red, selected the bottom 25 percent of the Saturation qualifier with about a 10 percent falloff to the highs, and then selected from about 10-30 percent on the Luma qualifier with falloff in both directions.To repair, I denoised by 50, blurred to 15, cut shadows and highs, boosted mids, cooled the temp to 50, pushed magenta to 40, desharpened by 50, and desaturated to 85.For the highs, I selected all colors on the Hue qualifier, the bottom 30 percent with a 15 percent or so falloff to the highs on the Saturation qualifier, and then 30-50 percent on the Luma qualifier with about a 15 percent falloff on both sides.To hide the noise, I denoised by 50; pushed blur all the way to 30; boosted shadows and cut highs and mids; and pushed magenta to 25 before pushing contrast, sharpen, and saturation controls all the way to -100.To finish this out, I am again stacking the clips with the bottom set to the Color Dodge blend mode at 100 percent opacity, middle set to Multiply at 65 percent, and the highs set to Multiply at 90 percent. I then nested the clips to apply final adjustments to bring the levels up and warm the entire image, and then I slightly shifted the tint to get more accurate skin tones.I then added a 35mm film grain to further hide the noise and set it to the Lighten color blend mode at 20 percent opacity. Finally, I added an adjustment layer to boost the contrast in the shot a little more, and I made a slight adjustment to the Curves panel to mitigate the green tint in the image.All that’s left is to compare these results to a version of the original clip with similar adjustments excluding our noise reduction.BeforeAfterI think the winner is clear.Whether or not you decide to incorporate manual noise reduction into your image mastering workflow, I hope you got a better grasp of how specific noise frequencies affect your footage and some of the ways spatial noise reduction tools target and reduce noise — and perhaps a few tricks when none of your other tools are working out. As always, experiment with your own footage and see what other tricks you can figure out!Cover image via kasha_malasha.Looking for more post-production tips and tricks? Check these out.Saving Noisy Footage: The Easy Way and the Hard WayIsolating Image Channels to Work with Chroma and Luma in PremiereHere’s What You Need to Know About Data CompressionPost-Production Tips: How to Save Corrupted FootageWhy Dual Native ISO Should Be the New Industry Standard
Jammu and Kashmir BJP president Ravinder Raina and two other senior leaders were given clean chits by the party’s internal fact-finding commission in the alleged case of offering bribes to journalists in Leh to influence the recently held parliamentary polls in Ladakh.“The BJP leaders have not done anything wrong and whatever charges have been levelled against them are totally false and baseless,” the three-member commission headed by Justice (retd) G.D. Sharma said in its report, released by the party here on Thursday.The State unit of the Congress, however, rejected the probe and termed it an attempt by the party to influence police investigation.The commission was constituted last month on the directions of BJP national president Amit Shah.The commission, whose other members include former IGP S.S. Bijral as member and Pallav Sharma as member-secretary, has given clean chits to Mr. Raina, State party general secretary Narinder Singh and MLC Vikram Randhawa as it found that they did not, in any manner, whatsoever, misconducted themselves to seek favour in any form.On May 4, the Press Club, Leh, had accused the BJP of trying to bribe its members by offering “envelopes filled with money” after a press conference on May 2, a charge denied by the party which had said allegations were “politically motivated”.Statements recordedThe commission said it recorded statements of journalists, persons associated with the Press Club, local leaders and examined CCTV footage besides recording the statement of the accused BJP leaders.The commission said it was established beyond any manner of doubt that the allegations of giving bribe by the MLC in the presence of Mr. Raina, Mr. Singh and district president, Leh, Dorje Angchuk is the result of afterthought and forms a part of criminal conspiracy as defined under Section 120-A of RPC.“The proof of giving or accepting illegal gratification is the raison d’etre of the offence of bribery, which ingredient is missing in this case,” the commission said.The police had on May 9 registered an FIR against the BJP leaders in connection with bribe allegations on the directions of the Chief Judicial Magistrate, Leh.
April 17, 1998Arcosanti Organicsmanuring the fields,soon to be farmed under the supervision of Hopi friends.
September 22, 2008 On Saturday evening Arcosanti hosted the sixth annual Following dessert, the audience gathered to hear the 20 or so musicians and composers of Different Skies perform the soaring electronic compositions that they had created and rehearsed over the preceding six days of intensive collaboration on site. The ensemble employs a variety of electronic technologies to produce imaginative musical effects ranging from placid soundscapes to rousing rhythms, and even “a violent altercation” between three P3 Sequencers. After delighting the audience with a dozen such new compositions, including “Conquering the Void” and “Clock Blocker,” the group played a few spontaneously improvised pieces to bring the lovely evening to a creative culmination. More Concert photos. [Photo: Hong Waltzer & text: Lissa McCullough]