Watch SpaceXs droneship catch a rocket part that fell from space

first_img SpaceX The fairing is part of the protective cover at the top of the Falcon 9, which shields payloads as they’re lifted into orbit. Once the rocket punches out of the atmosphere and into space, the fairing breaks in half and falls back to Earth. A droneship, stationed in the Atlantic Ocean, then attempts to catch the fairing with a giant net. We’ve seen SpaceX capture a fairing on its most recent launch and before that we’ve seen it fail a few times. It seems practice makes perfect and it’s finally getting the hang of nabbing the nosecone like a ship-sized Mark Waugh stationed in the slips (that’s one for our Aussie readers).A New Zealand-based spaceflight company, Rocket Lab, announced on Tuesday it would also begin attempting to reuse rockets. It won’t be capturing any fairings, but it will try and snag the first stage booster from the sky with a helicopter. Post a comment Sci-Tech Tags 13 Photos Share your voice Number two.  SpaceX SpaceX launched its Falcon 9 two-stage rocket to orbit on Tuesday, offering a free ride for the AMOS-17 communications satellite. It was the third flight for the Falcon 9 booster and to get the satellite to orbit SpaceX had to do away with the booster — so we don’t get to see SpaceX pull off another dazzling booster return. However, we have got the next best thing: A droneship capturing the rocket’s fairing.Elon Musk, SpaceX CEO, posted a video of the daring fairing capture to Twitter on Tuesday.  0 Meet the SpaceX Falcon Heavy, the world’s most powerful rocket Rocket fairing falling from space (higher res) pic.twitter.com/sa1j10qAWi— Elon Musk (@elonmusk) August 7, 2019last_img read more

Hong Kong prodemocracy activist jailed 6 years

first_imgPro-independence activist Edward Leung walks inside a detention centre before leaving for the High Court for a sentencing hearing in Hong Kong, China on 11 June. Photo: ReutersA former rising star in Hong Kong’s radical youth opposition was sentenced to 6 years in jail on Monday for rioting and assaulting police, one of the city’s harshest sentences against a democracy activist in recent years.Edward Leung, 27, one of the leaders of a movement advocating Hong Kong’s independence from China, had earlier been found guilty of rioting in a 2016 overnight protest that turned violent. He had pleaded guilty to assaulting a police officer.About 130 people, mostly police, were injured when masked protesters tossed bricks and set trash cans alight to vent their anger against what they saw as mainland Chinese encroachment on the city’s autonomy and freedoms.It wasn’t immediately clear if Leung would appeal against the sentence.Leung appeared calm upon hearing High Court Judge Anthea Pang announce the sentence, while murmurs of disbelief rippled through a crowd of about 150 activists and supporters watching a live broadcast outside the courtroom.Pang condemned the “severe violence” of the riot, which she said had caused danger to those at the scene, and which warranted the imposition of a strict deterrent sentence.“The court absolutely does not allow livelihood or political disputes to be expressed through acts of violence,” she said.Two other defendants in the case, Lo Kin-man and Wong Ka-kui, were jailed 7 and 3.5 years respectively for rioting.Leung has supported Hong Kong’s outright secession from China given Beijing’s perceived erosion of the “one country two systems” principle granting the city a high degree of autonomy since it was handed from British to Chinese rule in 1997.The controversial politician, then a student of philosophy at the University of Hong Kong, came to public prominence after the violent protests, and a run for public office during a by-election for a legislative council seat that year. He was barred from running for another election later that year.China has repeatedly slammed the independence movement, fearful of the idea catching on in the mainland. President Xi Jinping warned last year that any attempt to endanger China’s sovereignty would be an act that crosses a “red line”.Although the court case does not deal directly on the issue of independence, the sentencing is likely to be interpreted as a broader warning against the city’s young radical activists.Leung’s sentence came one week after two other pro independence activists and former lawmakers were sentenced to one month in jail for assembling illegally in the legislature while still in public office.last_img read more

Semiconducting nanonetwork could form the backbone of transparent flexible electronics

first_img Explore further This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. The researchers, led by Kwanghee Lee, a professor at the Gwangju Institute of Science and Technology in South Korea, have published a paper on the new material in the Proceedings of the National Academy of Sciences. “So far, there has been no semiconducting material that simultaneously achieves excellent optical transparency, high charge-carrier mobility, and real flexibility,” coauthor Kilho Yu at the Gwangju Institute of Science and Technology told Phys.org. “Metal oxides, such as ZnO and IGZO, have excellent transparency and high mobility, but they are brittle and show poor mobility if not treated with high-temperature (>200 °C) processes, which are not desirable for fabrication on flexible substrates. General semiconducting polymers are flexible, but show poor mobility without complex processes and are not very transparent because of their high optical absorption coefficient.”The new polymer blend consists of about 15% semiconducting polymer called DPP2T integrated into an inert polystyrene matrix. The two types of polymers do not mix uniformly, but instead the DPP2T forms a web-like nanonetwork through the inert matrix, creating highly ordered, continuously connected charge pathways for rapid charge transport. So far, transparency has been particularly challenging to achieve in semiconducting polymers because of their inherently high light absorption in the visible range. DPP2T belongs to a newer class of semiconducting polymers in which the light absorption peak is red-shifted to the near-infrared range, so it absorbs much less light in the visible range and has greater optical transparency. However, DPP2T by itself still has a greenish tint. Only by blending the DPP2T with the polystyrene matrix could the researchers fabricate a material that is almost perfectly transparent throughout the visible range.In the final analysis, the researchers showed that the individual materials in the polymer blend cannot achieve all three of the desired properties on their own, but only when blended together. © 2017 Phys.org Field-effect transistors integrated with LEDs, showing transparency and flexibility. Credit: Yu et al. ©2016 PNAS Graphene produces more efficient transport of a semiconducting polymer film Photograph of the flexible, transparent field-effect transistor made of the new material. Credit: Yu et al. ©2016 PNAS Citation: Semiconducting nanonetwork could form the backbone of transparent, flexible electronics (2017, January 13) retrieved 18 August 2019 from https://phys.org/news/2017-01-semiconducting-nanonetwork-backbone-transparent-flexible.html More information: Kilho Yu et al. “Optically transparent semiconducting polymer nanonetwork for flexible and transparent electronics.” Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1606947113 To demonstrate, the researchers fabricated prototypes of colorless, bendable field-effect transistors integrated on top of colorless, bendable light-emitting diodes. The devices could withstand 1,000 bending cycles with no severe performance degradation. (Phys.org)—Researchers may have found a “sweet spot” for organic electronics by fabricating a new 2D semiconducting polymer-blended nanonetwork material that simultaneously achieves excellent charge mobility, high flexibility, and nearly 100% optical transparency—a combination of properties that has so far been elusive for semiconducting materials. According to the researchers, the nanonetwork is the first truly colorless, bendable semiconducting material, as demonstrated by the fabrication of field-effect transistors with integrated LEDs. “The nanonetwork semiconductor can be made very easily and is solution-processable, and it needs no heat treatment or any other complex processes,” Yu said. “It simultaneously achieves excellent characteristics for future transparent, deformable electronic applications. The applicability of the nanonetwork semiconductor was proven by the fabrication drive of prototype FET/OLED integrated devices. In the paper, we also have shown a new paradigm for achieving facile charge transport in semiconducting polymers, which emphasizes the importance of clean charge pathways along the polymer backbone, rather than the degree of crystallinity of the polymer.”The researchers expect that the results will pave the way for the development of a wide variety of applications, such as next-generation “see-through” bendable electronics and skin-attachable medical devices.”We are currently investigating the intriguing charge transport mechanism of the nanonetwork semiconductor using various experimental tools and modeling,” Yu said. “In addition, we are applying this nanonetwork semiconductor toward various electronic applications, in order to make it a platform technology for deformable and transparent electronics.” Journal information: Proceedings of the National Academy of Scienceslast_img read more

HC to hear plea against proposed MCD strike

first_imgThe Delhi high court on Monday agreed to hear on Tuesday a plea seeking to restrain the civic bodies in the national Capital from going on strike again.The matter was mentioned before a Bench of justices Badar Durrez Ahmed and Sanjeev Sachdeva which directed that it be listed for hearing on Tuesday. The petition was filed by a lawyer who moved the court as an association of MCD unions has again called a strike on July 22 demanding primarily reunification of the three Corporations as well as payment of pending salaries and other arrears. The association also made other demands which include declaration of sanitation workers as technical employees, timely payment of terminal benefits of retired and deceased employees, pension benefits, cashless medical card facility as well as providing houses to them. The petitioner, Sanjeev Kumar Arora, said that proposed strike of July 22 “is of much wider consequence” as it has been called by all the employees of the Municipal Corporations of Delhi and thus it will “jeopardise the health, safety and normal life of the people” of the city.last_img read more

JU VC promises stringent action against prof who likened womans virginity to

first_imgKolkata: Slamming Prof Kanak Sarkar’s misogynist statement, Jadavpur University Vice-Chancellor Suranjan Das said on Wednesday it has sullied the image of the institution and “stringent” action would be taken against him. Sarkar, a professor of International Relations department, had likened a virgin woman to a “sealed bottle” or “packet” in a Facebook post on Sunday, triggering an outrage. Though he had deleted the post, screenshots of it went viral. Also Read – 3 injured, flight, train services hit as rains lash Bengal “He is a teacher. His comment has sullied the image of the university. It will also take stringent action against him as per rules,” Das said, adding he had also “heard” that he had had made certain objectionable comments in the class in the past. It has to be seen what kind of step could be taken against him as the statement was made on Facebook, the vice-chancellor said. Das said he has come to know that both the National Commission for Women (NCW) and the West Bengal Commission for Women have taken suo motu cognisance of the statement of Sarkar. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killed The NCW on Tuesday tweeted that it has written to the state Director General of Police Virendra to investigate the matter and take appropriate action. An NCW team would also meet the vice-chancellor on this issue this week. Das said the West Bengal Commission for Women (WBCW) has sought an explanation from Sarkar. “He (Sarkar) has been asked an explanation (by the WBCW). We also received its letter,” Das told reporters on the sidelines of the convocation of St Xavier’s College here. The students had boycotted Sarkar’s classes on Tuesday. Asked if he would ask the students to get back to his class, the vice-chancellor said he would not. Student unions of the university on Tuesday submitted memoranda to Das, demanding strict action against the professor. “They (students) can come and meet me. It will be seen what can be done. I also heard that he had had made certain (objectionable) comments in the class in the past,” he said. Sarkar, in his post, wrote: “Are you willing to buy a broken seal while purchasing a bottle of cold drink or a packet of biscuits? It is the same case with your wife. “A girl is biologically sealed from birth until it is opened. A virgin girl means many things accompanied as values, culture, sexual hygiene. To most boys, virgin wife is like angel.” Facing criticism, a defiant Sarkar appeared to justify his comments, asserting that it was intended for “fun” among a social media group of friends and “not for public consumption”. “Someone took a screenshot of the post and forwarded it, which triggered the response. I did not intend to hurt anyone’s sentiment or insult any woman,” he said. He also said according to a Supreme Court order every individual is entitled to express his opinion.last_img read more

Twoday international conference begins at VIT

first_imgVELLORE: The two-day annual International Conference on Science, Engineering, and Technology began at Vellore Institute of Technology on November 13. The ICSET 2018 – 18th International Conference organised by the VIT School of Building Science, was inaugurated by Hector Cueva Jacome, Ambassador of Ecuador to India. More than 2,000 scientists, young researchers, academicians, experts and students from different parts of the world are taking part in this Conference. Also Read – Add new books to your shelfS K Sekar, Dean of School of Building Science, welcomed the gathering at the inaugural address of the Conference held at Dr Chenna Reddy Auditorium. Professor Meena, event coordinator outlined the objectives of the Conference. In his address, while presiding over the Conference, Professor Anand A Samuel, Vice-Chancellor of VIT, said that their institution accorded top priority to research. To prepare students for a career and a life ahead of them in the area of research, the faculty at VIT trained students here in research from the second and third year onwards itself, he said and that over 3,000 students were engaged in research at VIT and that the institution was credited with publishing with the maximum number of research papers in science journals among all educational institutions in the country. Also Read – Over 2 hours screen time daily will make your kids impulsiveDr Samuel said that over 1,000 research papers were submitted for presentation in this annual conference on Science, Engineering, and Technology and 998 among them were selected to be presented here. He said that there were over 60 Universities in Ecuador and that next year, VIT would enter into a Memorandum of Understanding with some of those universities. Hector Cueva Jacome, Ambassador of Ecuador to India, inaugurated the conference and released a special souvenir released on the occasion. In his address, he said that he was delighted to inaugurate the conference. He said India was trying through various means to become a superpower at the world level. He said that there was no doubt that India would become a superpower considering that it had resources for developing its potential in the areas of science and development of its inherent talents. Among others who took part in the inaugural function included Professor S S Narayayan, Pro Vice-Chancellor, S Parimala Ranganayaki, and A Sobi.last_img read more

Making Mobile Marketing Work for Your Business

first_img This hands-on workshop will give you the tools to authentically connect with an increasingly skeptical online audience. June 21, 2012 Free Workshop | August 28: Get Better Engagement and Build Trust With Customers Now In his book “Mobilized Marketing,” author Jeff Hasen details the strategies and tactics that move products and build loyalty through mobile devices, arguably your most personal means of communicating directly with customers. In the following edited excerpt, Hasen offers insights from seasoned marketing professionals on how to gauge, use and succeed with mobile.Interested in mobile marketing but not sure how or where to get started?Here are tips from three leaders in mobile marketing and their thoughts for those new to the field.1. Do some people watching. — Barbara Williams, a senior-level marketer at Microsoft.”This is something really simple. . . . If you’re not sure if you should be doing mobile, take a page out of classic consumer research mode. . . . Go to the store, go to the mall, go out to dinner, and sit back and watch people. Just watch. Old school. And you see everyone is on their devices and they are spending quite a bit of time on their devices and they’re not making phone calls necessarily and they are not just doing SMS [short message service] — they are doing a lot of things.”When you see that happening around you everywhere you go, think about how can I insert my product or my brand or my message into these experiences. Just look at the world around you. And listen to young people who grew up in the digital age. Their behaviors are completely different. You’ll see this is definitely the route to go in. Invest the time to learn it and understand it. Explore it yourself.”Related: Five Mobile Marketing Questions Every Business Owner Needs Answered2. Keep an eye on what “the little guy” is doing, as well as the titans. — Mario Schulzke, founder of IdeaMensch and director of digital strategy at marketing firm WDCW.”You know, I am not smart enough to tell you about major game-changers. . . . But I can tell you there will be a revolution of incremental innovations that are about to take place. It’s so easy nowadays to build your own website, your own piece of software or your own app. So what’s happening is that a bunch of people are starting to solve the problems that they’ve been having in their own lives and industries. We’ll see some major productivity gains in just about every vertical, driven by people solving problems close to their vest.”Do what feels right. . . . Build a marketing program around tactics that make sense for you. I have many clients who are overwhelmed by Twitter, Facebook, Foursquare and the like. But when we talk about creating content that provides value to existing and potential customers, they get that. Having a roundtable discussion on Twitter is no different than going to a networking meeting. Crafting a webinar and capturing leads via email is no different than speaking at your local Lion’s Club.”Do what makes sense to you, and always think about the value you provide to your audience. Focus on the fundamentals. Respectfully communicate with your customers via all channels. Don’t pretend to be something you’re not, and do the right thing.”Related: How to Crack the QR Code for Mobile Marketing3. Create interactive “rich media” designed specifically for your mobile site. — Microsoft’s Williams.”When you think rich media and digital, you tend to think of the standbys like a whole-page takeover or part of an ad will be in the leaderboard at the top of the page and move into one of the units on the side. . . . On mobile, it’s a completely different type of experience. You don’t have the flexibility but you have the entire device. You can incorporate rich functionality where you can shake the device or where it is actually using the camera function in augmented reality or the location function. There are so many other vectors or parameters that are unique to mobile that I think make rich even richer on mobile. But you have to think about it in a different way on mobile.”If you don’t have a mobile landing page attached to that rich media unit, you have kinda left [your customers] hanging. . . . While rich media is an incredible opportunity to pull people in and to really drive engagement and surface up and push the content out, that back end is still needed when they want to continue their journey. . . .”4. Find out how your customers want to communicate with you. — Eileen Woodbury, director of marketing at Clear Channel Los Angeles.”People will communicate with you the way they want to communicate. . . . So texting isn’t replacing the Web. The Web didn’t replace the phone call. People who want to call will want to call. People who never called us before hopefully will engage with us through text. Some people prefer Twitter or are on Facebook all day.”This is the age of choice. People communicate the way they want to. With every new thing that comes along, we’re adding to our arsenal.”Related: The Top Five Mobile Marketing Mistakes 5 min read Opinions expressed by Entrepreneur contributors are their own. Enroll Now for Freelast_img read more