None of the smartphones that were slated for the attack were compromised. With mobile devices limited on memory and processing power, many researchers (hackers) main exploit techniques are not able to work.TippingPoint also identified unexpected complications with the possible combinations of handsets, operating systems and carriers introduced into the exploit equation. A spokes person at TippingPoint went on to say; “we didn’t realize how complicated it was.” In some cases TippingPoint wasn’t able to determine the exact phone or operating system’s version early enough to give researchers the lead time they needed to work up an exploit of a vulnerability they might have already uncovered. In next years Hackers Contest, TippingPoint plans to work out the details ahead of time so that it can publish the rules and specifications of the smartphones in plenty of time for researchers to prepare.An Apple iPhone could have been hacked if a researcher had wanted to part with the vulnerability. A TippingPoint spokes person commented, “there was an exploit at the show that could have broken the iPhone, but the researcher said that the $10,000 wasn’t enough to part with that level of vulnerability.”Some researchers just want to hold on to the bugs they have uncovered, even when offered $10,000 in cash. They have pride in their own little vulnerability they worked so hard on. But up© 2009 PhysOrg.com Citation: PWN2OWN Hacker Contest Targets Smartphones (2009, March 26) retrieved 18 August 2019 from https://phys.org/news/2009-03-pwn2own-hacker-contest-smartphones.html 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. QuickTime Exploit Details Disputed Explore further (PhysOrg.com) — TippingPoint, a security response team at 3Com Inc, had offered $10,000 for each exploit of any smartphones, which included Apple Inc.’s iPhone and RIM’s BlackBerry, as well as phones running the Windows Mobile, Symbian and Android operating systems.
More information: — Iain A. Anderson, Tony Chun Hin Tse, Tokushu Inamura, Benjamin M. O’Brien, Thomas McKay, and Todd Gisby, “A soft and dexterous motor,” Applied Physics Letters (2011). Available online: link.aip.org/link/doi/10.1063/1.3565195– www.abi.auckland.ac.nz/uoa/hom … projects/biomimetics Copyright 2010 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. (PhysOrg.com) — “When you pick up a spoon with your fingers, you are able to move it from side to side and rotate it too by moving thumb and forefinger in opposition,” Iain Anderson tells PhysOrg.com. Your hand is a soft machine. To be able to mimic the hand, we need soft technology.” Citation: New soft motor more closely resembles real muscles (w/ video) (2011, April 18) retrieved 18 August 2019 from https://phys.org/news/2011-04-soft-motor-resembles-real-muscles.html Replacing batteries may become a thing of the past, thanks to ‘soft generators’ PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Explore further Play The first motor is a single membrane orbiting gear motor. Electrical activation of the membrane causes the central gear to orbit and the orbital motion of the gear turns the shaft. The second motor has the flexible rubbery gear. Electrical activation of the membrane can make the flexible gear assume an elliptical shape and grip the shaft. We can then move the electrical activation around the membrane so that the major axis of the ellipse rotates. When this happens the shaft is turned. The flexible gear motor has no rigid bearings and so it is possible to tilt the shaft up and down and side to side. Video credit: Iain Anderson Taking the idea further, Anderson had the idea of making the gear flexible so it could grip the shaft, like a thumb and forefinger grips a spoon. “This breakthrough made the bearings redundant, opening the door to multi-degree-of-freedom motion.” These degrees of motion include the abilities to tilt and rotate, in addition to simply moving the shaft up and down or side to side.In order to make the motor, Anderson and his group take a special polymer material and stretch it so it becomes a really thin membrane. They create a rubbery gear from the same material and then place the gear at the center of the membrane. Then, sections of the membrane are painted with carbon grease. This grease, when conducting electricity, forces the membrane to change shape and this causes the gear to deform, moving the shaft. “We use selective actuation to turn the shaft.” Anderson is a scientist at the Biomimetics Laboratory at the Auckland Bioengineering Institute in New Zealand. Anderson’s lab works with dielectric elastomer artificial muscles, developing technology designed to more closely mimic the movements of muscles. “We’ve been researching artificial muscles for a few years now, and we wanted to see if we could create a machine without any hard bits – a machine that mimics the same degree of freedom you see when you move your hand.”With the creation of a bearing-free motor, Anderson worked with others from the Biomimetics Laboratory, including Tony Chun Hin Tse, Tokushu Inamura, Benjamin O’Brien, Thomas McKay, and Todd Gisby. Their work can be seen in Applied Physics Letters: “A soft and dexterous motor.” Anderson says that the idea for an artificial muscle membrane motor came from his students a few years ago. They showed him an interesting motor. “They were working on this quietly amongst themselves. When they got it running they showed me. This had a rigid central orbiting bearing that was pushed side to side by one membrane and up and down by another,” Anderson explains. The motor consisted of two different membranes pushing on the same gear, with a shaft supported by rigid bearings. Anderson continues: “So we could get the gear to orbit by combining motion from both membranes and when the orbiting gear supported by the membranes came into contact with a gear on the shaft, the shaft rotated.” Artificial muscles are not new, Anderson points out. He says that SRI pioneered much of the technology used in artificial muscles today. SRI also produced an artificial muscle rotary motor. This first artificial muscle rotary motor, though, “had a lot of hard bits in it. But by using the membrane approach we have been able to make a rotary motor with fewer hard bits.”The ultimate goal is to create soft machines that are completely free of hard bits. There are advantages to soft motors, Anderson says. “They are lightweight and have the advantage of reduced mass. Their flexibility makes them less likely to break. Additionally, living things are mostly soft. If we want them to interface with living things, it makes sense to have them soft.”Anderson says that the next step is improve the control they have over the motor, as well as create a mechanism that allows the motor to automatically adjust to a heavier load – in much the way that your arm adjusts to keep your hand from lowering a glass of water as you fill it. “We’re into soft generators as well,” he continues. “We’re trying to make the world soft.” 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.
, arXiv Journal information: Physical Review Letters Over many years, scientists have developed more sophisticated ways to measure gravity, one of the latest is to use atom interferometry—it enables distance measurement with very high precision and works by exploiting the quantum-mechanical wavelike nature of atoms. Up till now researchers have been able to measure the changes in gravity as altitude increases, for heights as little as a few feet, creating a gradient. In this new research the team has found a way to measure the change in gravity that is produced by a large mass. This change in the gradient is known as gravity’s curvature.To directly measure the change in a gradient, the team used measurements made at three different heights. Measuring gravity at two locations close to one another can give the gradient as the measured difference of the two divided by the distance between them. Measuring gravity at three locations allows for calculating the rate of change, or curvature—an idea for an experiment to carry out this measurement was first proposed back in 2002. The experiment conducted by the team in Italy is based on that proposal.To allow for measuring gravity at three locations all at the same time, the team created three plumes of ultracold atoms at three different heights inside of a one meter pipe. The top half of the piper was surrounded by tungsten alloy weights to cause an increase in variation of the gravitational field. The atoms were irradiated with pulses from a laser to cause them to separate the plumes into two parts, one that absorbed photons and a second that was left in a ground state. The additional momentum caused the atoms in the first group to fall a different distance over a measured time period, which led to a difference in quantum wave cycles that elapsed between the two. The team then added two more wave pulses to cause the two groups to recombine, which allowed them to interfere. Measuring the interference allowed for calculating the variations in gravitational acceleration and curvature, which turned out to be 1.4×10 −5 s −2 m −1, as predicted.The team believes their method should prove useful for geologic and mapping work as well as improving the measurement of G. Explore further Citation: Researchers conduct first direct measurement of gravity’s curvature (2015, January 12) retrieved 18 August 2019 from https://phys.org/news/2015-01-gravity-curvature.html More information: Measurement of the Gravity-Field Curvature by Atom Interferometry, Phys. Rev. Lett. 114, 013001 – Published 5 January 2015. dx.doi.org/10.1103/PhysRevLett.114.013001 . On Arxiv: arxiv.org/abs/1501.01500ABSTRACTWe present the first direct measurement of the gravity-field curvature based on three conjugated atom interferometers. Three atomic clouds launched in the vertical direction are simultaneously interrogated by the same atom interferometry sequence and used to probe the gravity field at three equally spaced positions. The vertical component of the gravity-field curvature generated by nearby source masses is measured from the difference between adjacent gravity gradient values. Curvature measurements are of interest in geodesy studies and for the validation of gravitational models of the surrounding environment. The possibility of using such a scheme for a new determination of the Newtonian constant of gravity is also discussed. (a) Scheme of the experiment. (b) Gravitational acceleration along the symmetry axis (az) produced by the source masses and the Earth’s gravity gradient. Credit: Phys. Rev. Lett. 114, 013001 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. © 2015 Phys.org Researchers propose method for measuring gravitational impact on antimatter (Phys.org)—A team of researchers working in Italy has successfully conducted an experiment to directly measure gravity’s curvature for the first time. In their paper published in the journal Physical Review Letters, the team describes their work and note that what they have accomplished could lead to an improvement in G, the Newtonian constant of gravity.
Citation: Best of Last Week – First photo of light as particle/wave, the dark side of cosmology and a hormone that mimics exercise (2015, March 9) retrieved 18 August 2019 from https://phys.org/news/2015-03-week-photo-particlewave-dark-side.html In space news, David Spergel, an astrophysicist at Princeton, offered a compelling look at the dark side of cosmology—and explained why scientists are so sure that dark matter and dark energy exist. Also, a team analyzing data from the Keck telescope discovered, all jokes aside, a giant methane storm on Uranus, a surprise, as the planet’s atmosphere was not known to be so energetic. And speaking of energy, researchers working at Northumbria University described a breakthrough in energy harvesting that could someday power life on Mars—it is a motor that runs on carbon dioxide and is based on the Leidenfrost effect.It was also a good week for technology development as a team of students launched a desktop recycler that turns pop bottles into 3D printer plastic—a development that could greatly reduce the cost of printing 3D objects. Another team investigating bucky-balls developed a buckybomb that shows the potential power of nanoscale explosives—the reaction showed a huge increase in temperature and pressure in just a fraction of a second. And a combined team of researchers from the U.S. and Japan announced a breakthrough in OLED technology—their devices, they claim, can produce brilliant low-power light sources. A team at Rutgers University reported that they have found a link between BPA exposure and autism spectrum disorder—a finding that could have widespread implications for the widely used plastic. And researchers at the Technical University of Ilmenau announced that their research indicates that Na-ion batteries are getting closer to replacing Li-ion batteries.And finally, if you happen to be one of the millions who find it difficult to diet and exercise, a team of researchers at USC announced a newly discovered hormone that mimics the effects of exercise—perhaps someday soon, instead of getting out and doing stuff, people can just take a pill when they eat to keep themselves in shape. 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. Explore further (Phys.org)—It was another interesting week for physics as a team working at École Polytechnique Fédérale de Lausanne found a way to take the first ever photograph of light as both a particle and wave. Meanwhile, another team working at UC Santa Barbara announced that they had developed the first-ever quantum device that detects and corrects its own errors—a necessary precursor in developing a full quantum computer. Students launch desktop recycler that turns pop bottles into 3D printer plastic © 2015 Phys.org
Explore further Citation: Uncovering the role of the ilio-sacral joint in frogs (2018, October 10) retrieved 18 August 2019 from https://phys.org/news/2018-10-uncovering-role-ilio-sacral-joint-frogs.html 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. A trio of researchers, two with the Royal Veterinary College, the other the University of Portsmouth, has found evidence that suggests that the ilio-sacral joint in frogs evolved after they started jumping. In their paper published in the journal Biology Letters, Christopher Richards, Enrico Eberhard and Amber Collings describe their study of the joint and what they found. More information: Christopher T. Richards et al. The dynamic role of the ilio-sacral joint in jumping frogs, Biology Letters (2018). DOI: 10.1098/rsbl.2018.0367 Jumping frogs have an ilio-sacral joint in their pelvis that works like a hinge when they engage in jumping. It allows them to sit comfortably bent over while in a crouched position and to straighten their backs completely when jumping. Despite previous studies of frog anatomy, it has not been clear just how much of an impact the ilio-sacral joint has on a frog’s ability to jump. In this new effort, the researchers in the U.K. designed experiments to clear up the mystery.To learn more about how the ilio-sacral joint works in frogs, the researchers filmed several specimens using a high-speed camera as they went through their jumping motions. The team then created a computer simulation that showed how the joint works while in action. Doing so allowed the team to tweak conditions to learn more about how the frog actually uses its joint under different circumstances.The simulations showed that the joint was not actually necessary for jumping—the frog’s powerful legs ensured strong leaping regardless of whether it had an ilio-sacral joint. But such a joint did give them much more directional control. The muscles and tendons near the joint allowed the frog to fine-tune its jumping direction as it shot into the air.The researchers suggest that because the joint is not actually necessary for jumping, it is likely that it developed after the frogs started jumping—not concurrently. They also note that prior work by others studying frog fossils suggests that the ilio-sacral joint in frogs evolved independently in thousands of species. They further suggest that their findings could have implications for engineers designing prosthetics, perhaps offering clues on how to design arms that have higher precision when reaching for objects, for example.
The stage was set, instruments tuned and the mike set at the right frequency. A while later in comes the Indian rockstar, Rabbi Shergill. As he crooned in his mesmerising voice, the crowd went berserk and was left craving for more.Shergill performed at Blue Frog in the capital after more than a year and cast his magic over a jam packed audience of more than 700 Rabbi- lovers.He dedicated the show to his homeland Delhi and like a true music lover emphasised on the message of bringing back peace and humanity through music, brotherhood and love. His brilliant renditions of popular numbers like Also Read – ‘Playing Jojo was emotionally exhausting’Dilli, Ganga, Tere Bin and the all time hit Bulla struck the right chords and enthralled evryone present there.Rabbi was supported by a collection of other talented musicians who created a symphony in sync with the ambience and the evening blended in beautifully with some great music and food. Names like Andrew Ferrao on keyboard, Steve Valte on drums, Mahesh Subramoni on bass guitar and Amit, the Percussionist formed the best ever band who entertained successfully.
Delhi may not be the heart of the Durga Puja Festival but the celebrations are not far behind! Following the success in the inaugural year, the 2nd Edition of the ‘Pre-Puja Promotional Sale and Exhibition of Bengal Handloom and Handicrafts’ – bringing together the best of the creations of master craftsmen and weavers of rural areas of the State – was opened in the national capital today.Around 25 artisans from various districts of West Bengal, including Bankura, Bardhaman, Nadia, Kolkata, Hooghly, North 24 Parganas and Birbhum, will take part in the event, which is aimed at promoting the rich and glorious tradition of Bengal handicrafts and handloom and also ensuring commercial benefits to the weavers. Also Read – ‘Playing Jojo was emotionally exhausting’The fair was inaugurated by Nitish Sengupta, Chairperson of the Board for Reconstruction of Public Sector Enterprises in the gracious presence of Bhaskar Khulbe, Principal Resident Commissioner and Additional Chief Secretary, Government of West Bengal and Archana Datta, Director General, All India Radio, News Services Division, at Dilli Haat, INA.The exhibition, being organised by the Government of West Bengal with support from Development Commissioner for Handicrafts, follows a string of events held as part of the grand Chalo Chalen Bengal campaign, an initiative for promoting West Bengal as an attractive tourism destination, especially during the upcoming Durga Puja carnival. Also Read – Leslie doing new comedy special with NetflixThe exhibition offers a range of products, including diversified jute items, terracotta costume jewellery, Tangail and Jamdanee Sarees. Embossed leather goods from Shantiniktan, Nakshi Kantha, Dhaniakhali, Shantipuri and Baluchari Sarees, all of which have received Geographical Indication (GI) registration and being especially promoted by Government of West Bengal, will also be available. Special soirées are being organised with Chhau and Raibenshe folk forms and colourful performances bringing out the rhythm and tunes of Bengal. In keeping with the pre-Puja festive spirit, delectable Bengali street food will be available at the venue.WHERE: DILLI HAAT, INAWHEN: On till 6 October
Showcasing the conflict between the sub conscious mind and the outward behaviour, the Cineaste group will be performing their critically acclaimed play Kirdaar. The play tries to establish the behavioral patterns of human nature, which keeps on absorbing feelings of grief, happiness, and anger subconsciously and this absorption is reflected in actions which create contradictions with one’s own natureThe story unfolds after two characters come out of a book and confront it’s writer with their tragedies and misrepresentations. The play written in a mixture of english and hindi, takes an interesting turn when these characters do not agree with the way they have been written. Starring Deep Singh, Rishi Sharma, Komal Gupta, Radha Bhatt, Shiv Dutt and Shubham the play is written and directed by Devesh Nigam. Also Read – ‘Playing Jojo was emotionally exhausting’The Cineaste group has come up with 15 stage productions along with three critically acclaimed short films. The group has created a niche for itself in a short span of time and they are known for their experimental and innovative approach in theatre.Director Devesh Nigam has so far written nine plays and directed 15 productions. He has received critical acclaims for his work which includes Kafan, Moteram ka Satyagrah, Hawalaat, Bahut Bada Sawal, 5 Kahaniyan, among others. He believes that playwrights should respond to their urban realities while willing to experiment with style and narrative.Where : Akshara Theatre, Baba Kharag Singh MargWhen : 1 November
Kolkata: The Durgapur Municipal Corporation (DMC) is developing infrastructure for an alternative water distribution system for both domestic and industrial use. The DMC is installing as many as 36 deep tubewells at places where there are overhead reservoirs which will draw water from the ground and store it in the reservoir.”Till date, Damodar river has been the only source of water for the residents of Durgapur. Water from the Damodar river was treated and then supplied through pipeline for both domestic and industrial use. The idea is to be prepared for an alternative if there is any calamity that may disrupt the sully system in the township,” Dilip Kumar Agasty, Mayor of DMC said. The project will entail a cost of Rs 12 crore and the DMC hopes to complete it before the onset of the monsoon season. “The tender process has already been completed and work will start soon,” Agasty said. Also Read – Heavy rain hits traffic, flightsThe DMC is also taking up a major project ‘Storm Water Drainage Project’ to prevent waterlogging. It may be mentioned that during last monsoon the underground sewerage system had collapsed completely during the monsoon. In the month of October 2017, there was heavy rain that inundated several areas under the DMC including Tamla, Main Gate, Waria, Mana and Khatpukur. About 2,500 households were affected. The DMC does not want similar situations. “We have done a survey with the assistance of engineers from Kolkata Metropolitan Development Authority (KMDA). Our plan is to channelise the rain water through high drain to the small rivers like Tamla and Kumur that flows through the township area. The depth of the high drains also needs to be enhanced for which massive desiltation work needs to be undertaken,” the Mayor said.The work for preparing the DPR has already been initiated. Agasty met state Urban Development & Municipal Affairs minister Firhad Hakim in his chamber at Writers’ Building recently and the latter had assured that funds will not be a problem for projects that are meant to benefit people.
DARJEELING: A racket has spread its tentacles in Darjeeling whereby people are being sent parcels with stones inside which they are being duped into buying (cash on delivery). Many have already fallen victim to the fraud while some unclaimed packages are still there at the Darjeeling General Post Office.Usually a person first receives a phone call where the caller says that the person has won a high-end cell phone in a lucky draw, which can be had against paying a nominal amount through cash on delivery system. Also Read – Heavy rain hits traffic, flights”Around 10 days ago, I had received a call from a lady introducing herself as Kavya. She stated that I had won a high-end cell phone costing around Rs. 40,000. Then I was asked for my address. I was reluctant and told her that I would spend any money on it. She maintained that I would have to pay a nominal amount after having received the cell-phone. I then proceeded to give her my address,” stated Bishal Rai, a resident. On Thursday, Rai received a call from the General Post Office, Darjeeling stating that a parcel has arrived in his name and that he would have to pay Rs. 3500 in order to take the delivery home. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedFollowing the call from the post office, Rai went and asked them to show the parcel. He was informed that if he opened it, he would have to pay the amount mentioned. However, the post office authorities warned him against it as in the recent past, many have been duped. People had found stones inside the parcels. On contacting Raju Singh, the Post Master of the Darjeeling General Post Office, he stated that the Post Office merely delivers whatever parcels arrive and are not aware or responsible for the contents. “However, people should be aware of fake companies and advertisements. Many such packages had come to the post office and remained undelivered, while many others had chosen to take it back home after paying under the Cash on Delivery scheme,” added the post master.He added that the parcels had different senders’ name. Some of them also had fake company names and addresses. Rai’s parcel was from Delhi. He tried to call back on the number but the number was not available. A person who had received a similar phone call and had landed up paying Rs 6000.