August, 2019

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Singlephoton source may meet the needs of quantum communication systems

first_img Citation: Single-photon source may meet the needs of quantum communication systems (2006, November 9) retrieved 18 August 2019 from Further, powerful quantum computers could solve problems that are impossible for today’s computers, and quantum cryptography could potentially provide absolute security for these systems.In the past few years, scientists have developed single-photon sources using innovative tools: quantum dots, single atoms and ions, and color centers are a few possibilities. However, all of these potential sources have shortcomings, in either complicated setups or insufficient production. Now, scientists Shuai Chen et al. have developed a controllable single-photon source using atomic quantum memory for generating and storing single photons to be used at a predetermined time. As they report in a recent issue of Physical Review Letters, “such a single-photon source is well-suited for future large-scale realization of quantum communication and linear optical quantum computation.” “Single-photon sources guarantee the absolute security in quantum communication networks,” co-author Zhen-Sheng Yuan told “While developing this single-photon source, we focused on how to obtain a long memory time of the single excitations in the atomic ensemble, and how to convert the single excitations into single photons with a high efficiency.”In the experimental setup, the scientists used Raman scattering, shining a laser pulse at an ensemble of cold rubidium atoms. As the laser light hits the atoms, single excitations in the atomic ensemble can either be generated or they can be converted into single photons. Detecting the newly created photons can generate single spin excitations in the cold atomic ensemble, which makes up the quantum memory—so-called because light-based information is being stored in matter. The single spin excitations can in turn be converted into single photons at a predetermined time, resulting in a controllable single-photon source. Chen et al.’s setup could produce 600 single spin excitations per second, translating to 15 single-photon detections per second.One of the most significant advantages of this quantum memory-based single-photon source is the ability to increase the number of single photons available. With the help of a feed-back circuit, Chen et al. could significantly enhance the production rate of single photons, as their properties align with those of the laser (spatial mode, bandwidth/intensity, frequency). “Compared with the other single-photon source without quantum memory, the greatest advantage here is that one can construct a quantum communication network with a much lower cost of resources because of the scalable property,” said Yuan.In principle, the spin excitation can be stored for up to 300 microseconds, and generate a single photon at any time. Because of the feedback circuit, this quantum memory-based photon source could likely provide enough single photons for a large number of quantum repeaters, a requirement for long-distance quantum communication networks.Citation: Chen, Shuai, Chen, Yu-Ao, Strassel, Thorsten, Yuan, Zhen-Sheng, Zhao, Bo, Schmiedmayer, Jorg, and Pan, Jian-Wei. “Deterministic and Storable Single-Photon Source Based on a Quantum Memory.” Physical Review Letters 97, 173004 (2006).By Lisa Zyga, Copyright 2006 One of the largest challenges for building quantum communications networks involves having single photons, which are needed to ensure the security and efficiency of quantum systems. With an adequate supply of single photons, quantum communications systems could send information at nearly the speed of light, compared with the electron speed (and resistance) in classical systems. This icon demonstrates the single photon source: When a laser beam (called Write, shown in green) hits the cold atomic cloud, a single spin excitation can be generated accompanying a Raman photon (shown in blue). Now the single spin excitation is ready for being retrieved to a single photon by another classical laser (called Read). The blue part at bottom right indicates the wavepacket of photons. Credit: Shuai Chen et al. 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.last_img read more

Before the Big Bang A Twin Universe

first_imgThe new study suggests that the universe that came before our own universe was its identical twin. Image credit: NASA and ESA. Satellites assisting look into hurricanes Until very recently, asking what happened at or before the Big Bang was considered by physicists to be a religious question. General relativity theory just doesn’t go there – at T=0, it spews out zeros, infinities, and errors – and so the question didn’t make sense from a scientific view. Explore further That means that our universe today, roughly 13.7 billion years after the bounce, would share many of the same properties of the pre-bounce universe at 13.7 billion years before the bounce. In a sense, our universe has a mirror image of itself, with the Big Bang (or bounce) as the line of symmetry. “In the universe before the bounce, all the general features will be the same,” said Singh. “It will follow the same dynamical equations, the Einstein’s equations when the universe is large. Our model predicts that this happens when the universe becomes of the order 100 times larger than the Planck size. Further, the matter content will be the same, and it will have the same evolution. Since the pre-bounce universe is contracting, it will look as if we were looking at ours backward in time.”Specifically, Corichi and Singh calculate that the change in relative fluctuations across the bounce is less than 10-56, a number which becomes even smaller for universes that grow larger than 1 megaparsec (our universe is somewhere between 3,000 and 6,000 megaparsecs). As the researchers explain, having an identical twin universe would not necessarily mean that every single feature of both universes would be identical. For instance, it doesn’t imply that there was another you that existed at some point, a person who has already lived your life. “If one were able to look at certain microscopic properties with a very strong microscope – a very high-energy experiment probing the Planck scale – one might see differences in some quantities, just as one might see that twins have different fingerprints or one has a mole and the other does not, or a different DNA,” Singh said.As Singh explained, there are still many questions regarding the details of the possible pre-bounce universe. “The biggest question is whether these features survive when we consider more complex situations,” he said. “For example, one would like to know whether some structures present in the previous universe – like galaxies – will leave some imprint in the new expanding one that will give rise to identical structure or just ‘similar.’ For instance, it could happen that, in the previous universe, galaxies formed in a different way, so one might have a different distribution of galaxies on the other side. We will be able to answer this question when we understand these models.” Ultimately, Corichi and Singh’s model might even tell us what a future universe would look like. Depending on how fast our present universe is accelerating – which will ultimately determine its fate – there’s a possibility that a generalization of the model would predict a re-collapse of our own universe.“Such a universe will have many bounces from one branch to another,” Singh said. “It is also possible that universes in different branches will be identical.”More information: Corichi, Alejandro, and Singh, Parampreet. “Quantum bounce and cosmic recall.” Arxiv:0710.4543v2. Accepted for publication in Physical Review Letters.Copyright 2008 All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of But in the past few years, a new theory called Loop Quantum Gravity (LQG) has emerged. The theory suggests the possibility of a “quantum bounce,” where our universe stems from the collapse of a previous universe. Yet what that previous universe looked like was still beyond answering.Now, physicists Alejandro Corichi from Universidad Nacional Autónoma de México and Parampreet Singh from the Perimeter Institute for Theoretical Physics in Ontario have developed a simplified LQG model that gives an intriguing answer: a pre-Big Bang universe might have looked a lot like ours. Their study will appear in an upcoming issue of Physical Review Letters.“The significance of this concept is that it answers what happened to the universe before the Big Bang,” Singh told “It has remained a mystery, for models that could resolve the Big Bang singularity, whether it is a quantum foam or a classical space-time on the other side. For instance, if it were a quantum foam, we could not speak about a space-time, a notion of time, etc. Our study shows that the universe on the other side is very classical as ours.”The finding builds on previous research, with some important differences. Last year, Penn State physicist Martin Bojowald used a simplified version of LQG to show that a universe “on the other side” of the bounce could have existed. However, although that model produced valid math, no observations of our current universe could have lead to any understanding of the state of the pre-bounce universe, as nothing was preserved across the bounce. Bojowald described this as a sort of “cosmic amnesia.”But Corichi and Singh have modified the simplified LQG theory further by approximating a key equation called the quantum constraint. Using their version, called sLQG, the researchers show that the relative fluctuations of volume and momentum in the pre-bounce universe are conserved across the bounce. “This means that the twin universe will have the same laws of physics and, in particular, the same notion of time as in ours,” Singh said. “The laws of physics will not change because the evolution is always unitary, which is the nicest way a quantum system can evolve. In our analogy, it will look identical to its twin when seen from afar; one could not distinguish them.” Citation: Before the Big Bang: A Twin Universe? (2008, April 9) retrieved 18 August 2019 from 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.last_img read more

Molecular fountain my lead to more precise measurement of physical constants

first_imgExperimental set-up with simulated trajectories. a. Schematic view of the top part of the vertical beam machine showing the end of the traveling wave decelerator and the quadrupole lens system. The quadrupole lens consists of 4 cylindrical rods suspended by 2 ceramic discs. Two ring electrodes focus molecules in the z-direction. For a view on the inside, part of the quadrupole and the buncher has been cut. Molecules are ionized by a UV laser and imaged on a phosphor screen located behind a multi channel plate (MCP). The image is recorded using a charge coupled device (CCD) camera and a photo-multiplier tube (not shown). The red curves show a simulation of trajectories through the lens system for a beam launched with a velocity of 1.8 m/s. b-g Phase-space plots showing the acceptance of the setup in both the longitudinal (b-d) and transverse directions (e-g), at three different heights. Note that the axes of panel g are scaled by a factor of 10 compared to panel e and f. The grey ellipses show the distribution of the packet of molecules at the exit of the decelerator. Credit: arXiv:1611.03640 [physics.chem-ph] Explore further More information: Cunfeng Cheng et al. Molecular Fountain, Physical Review Letters (2016). DOI: 10.1103/PhysRevLett.117.253201 , On Arxiv: resolution of any spectroscopic or interferometric experiment is ultimately limited by the total time a particle is interrogated. Here we demonstrate the first molecular fountain, a development which permits hitherto unattainably long interrogation times with molecules. In our experiments, ammonia molecules are decelerated and cooled using electric fields, launched upwards with a velocity between 1.4 and 1.9 m/s and observed as they fall back under gravity. A combination of quadrupole lenses and bunching elements is used to shape the beam such that it has a large position spread and a small velocity spread (corresponding to a transverse temperature of <10μK and a longitudinal temperature of <1μK) when the molecules are in free fall, while being strongly focused at the detection region. The molecules are in free fall for up to 266 ms, making it possible, in principle, to perform sub-Hz measurements in molecular systems and paving the way for stringent tests of fundamental physics theories. © 2017 Journal information: Physical Review Letters Citation: Molecular fountain my lead to more precise measurement of physical constants (2017, January 18) retrieved 18 August 2019 from Portable Precision: A New Type of Atomic Clock 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 (—A team of researchers at Vrije Universiteit Amsterdam has built, for the first time, a molecular fountain. The group has published a paper in the journal Physical Review Letters describing how they created the fountain, how it works and their ideas on how it might be used to more precisely measure physical constants. Scientists developed atomic fountains back in the 1980s and since that time they have been applied to a myriad of applications, the most well-known example likely being the atomic clock. The purpose of an atomic fountain is to allow for measuring the characteristics of atoms moving at relatively slow speeds. The slowed speeds are due to the way the fountain works—atoms are cooled to a very low temperature and are then shot upwards where they eventually slow, stop and begin to fall due to the force of gravity. An atomic clock works by setting an atom's internal state before it is shot upwards and then noting the minute change to its internal state as it comes back down. Scientists would like to have access to a similar fountain that works at the molecular level, because they believe it could be used to more accurately measure physical constants, which in turn could help in stringent testing of the Standard Model. Unfortunately, until now, that was not possible because of the difficulty in cooling molecules without causing them to spread out. In this new effort, the researchers have overcome that problem.To create the molecular fountain, the researchers cooled ammonia molecules by combining two prior techniques and applying them to a molecular beam. The first involved applying voltages in a rapidly switching manner to remove energy from the beam. The second involved applying high voltage that was smoothly varied to allow for continually slowing the potential of the beam as well as its speed. Once the molecules were slowed in a trap, they were fired upward in such a way as to cause them to undergo changes in velocity and position. They were then ionized by a laser and measured by a detector disk.The device is not yet able to offer physical constant measurements, however, because it is only able to detect a single molecule for every five repetitions of the fountain blast, which works out to less than one detection per second. This means that it will take a lot of time to gather enough information from a single fountain to make any real measurements. Fortunately, as more repetitions will produce additional data, which suggests highly precise measurements are sure to come in the near future.last_img read more

New eclipsing cataclysmic variable discovered

first_img Cataclysmic variables (CVs) are binary star systems consisting of a white dwarf and a normal star companion. They irregularly increase in brightness by a large factor, then drop back down to a quiescent state. Polars are a subclass of cataclysmic variables, distinguished from other CVs by the presence of a very strong magnetic field in their white dwarfs.Although over 140 polars have been detected to date, only 33 of them have been identified as eclipsing systems. Hence, every new addition to the still relatively short list of eclipsing polars is very important for creating a reliable sample of such objects. Building a larger database of these systems would offer astronomers more opportunities to study magnetic accretion in binaries.Now, a group of astronomers led by Hannes Breytenbach of South African Astronomical Observatory (SAAO) in Cape Town, South Africa, reports the finding of a new magnetic CV, which they believe is a synchronized polar. The discovery was made using the recently commissioned MASTER-SAAO telescope, which identified the new object as a transient source. Follow-up observations provided more insights into the nature of this source.”Here, we report on the discovery of a new eclipsing cataclysmic variable from the MASTER-SAAO optical transient survey, MASTER OT J061451.70–272535.5 (hereafter J0614–27),” the researchers wrote in the paper.The astronomers found that MASTER OT J061451.70–272535.5 eclipses with a period of 2.08 hours. The eclipse light curve of this system showcases a peculiar morphology as observations show an initial dip, where the object’s brightness drops to about 50 percent of the pre-eclipse level before gradually increasing again in brightness. Afterward, the second rapid ingress is observed, where the brightness drops by around 60 to 80 percent, what is followed by a more gradual decrease to zero flux.The authors of the paper concluded that a light curve with such characteristics is result of an initial obscuration of the accretion hot-spot on the magnetic white dwarf by the accretion stream. This is followed by an eclipse of both the hot spot and the partially illuminated stream by the red dwarf donor star.According to the study, the white dwarf in the system has a radius of about 0.012 solar radii, and a mass between 0.5 and 0.86 solar masses. The red dwarf donor star is approximately five times smaller and six times less massive than our sun. The stars are separated from each other by about 3.25 AU.All in all, the researchers note that the properties of MASTER OT J061451.70–272535.5 suggest that it is a synchronized polar. “The spectral features, along with the structure of the light curve, suggest MASTER OT J061451.70–272535.5 is a new magnetic cataclysmic variable, most likely of the synchronized polar subclass,” the paper reads.Given that many aspects of the nature of MASTER OT J061451.70–272535.5 remain to be investigated, especially its evolutionary status, magnetic field structure and accretion flow, the authors of the study propose further multi-wavelength observations of this system. Explore further Using the Mobile Astronomical System of Telescope-Robots (MASTER), an international team of astronomers has detected a new eclipsing cataclysmic variable. The newfound object, designated MASTER OT J061451.70–272535.5, is most likely of the polar subclass. The finding is detailed in a paper published January 9 on © 2019 Science X Network Astronomers identify new asynchronous short period polar The on-sky instrument field-of-view in equatorial J2000 coordinates for the photometric data collected on MASTER OT J061451.70–272535.5 from the SAAO. Image credit: Breytenbach et al., 2019. More information: H. Breytenbach et al. Discovery, observations and modelling of a new eclipsing polar: MASTER OT J061451.70-272535.5. arXiv:1901.02669 [astro-ph.SR]. Citation: New eclipsing cataclysmic variable discovered (2019, January 21) retrieved 18 August 2019 from 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.last_img read more

Student gives possible explanation for female mating preferences that decrease male survival

first_img Citation: Student gives possible explanation for female mating preferences that decrease male survival chances (2019, June 6) retrieved 18 August 2019 from Having an STI could benefit male animals Pavitra Muralidhar, a Ph.D. student in the Department of Organismic and Evolutionary Biology at Harvard University, has developed a theory to explain why females of some species are more attracted to some males who have a lesser chance of survival. In her paper published in the journal Nature, she outlines her theory of selfish sex chromosomes and how it might work in nature. Mark Kirkpatrick, with the University of Texas has published a News and Views piece in the same journal issue, outlining the work done by Muralidhar. 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. Journal information: Nature More information: Pavitra Muralidhar. Mating preferences of selfish sex chromosomes, Nature (2019). DOI: 10.1038/s41586-019-1271-7center_img Explore further © 2019 Science X Network Prior research has shown that females of some species are more attracted to males who posses certain impressive features, such as bright plumage. But such research has also shown that males who sport brighter plumage are more likely to be seen and eaten by a predator—so why do the females prefer them? Scientists have been unable to answer this question. But Kirkpatrick notes that there are two main theories. The first is called direct selection, and it is what it sounds like—genes that affect mating preferences are direct targets of selection. An example might be a male that is good at helping tend a nest, and is therefore highly prized by females looking for a mate. The other theory, quite naturally, is called indirect selection, and it involves females choosing mates who have one trait, but get another trait as part of the deal. A female who chooses a male based on plumage, for example, might wind up with a male that also has a good immune system, which is responsible for his great plumage. Unfortunately, neither of these theories explains why a female would go for a male that is clearly less likely to survive; doing so will decrease her male offspring’s chances of survival. Muralidhar suggests this phenomenon is due to what she describes as “selfish sex chromosomes.”Muralidhar’s theory is based on the indirect selection theory, and also sexually antagonistic selection, in which a gene benefits one gender, but could mean harm to the other. She also considers the possibility of an exception in situations where one gender has a pair of same chromosomes and the other has two that are different. She suggests that in cases in which a gene involved in mating is located on the chromosome that is present in only one gender, it can result in only offspring of the same gender carrying that gene, which could benefit them, but it could also bring harm to the offspring of the other gender. She has also carried out a mathematical analysis of her ideas to prove her theory and carried out a study of 36 species, half of which aligned with her “selfish sex chromosome” hypothesis expectations. Human chromosomes during metaphase. Credit: Steffen Dietzel/Wikipedialast_img read more

Miami Police Arrest Suspect In Shooting After

first_img by NPR News Bobby Allyn 8.21.19 5:08pm A man in Miami seemed to be trying to clear his name this week when he presented himself to police as someone who had his gun stolen recently, but the event took a surprising turn when police realized he was the man they suspected in a high-profile shooting over the summer.Miami-Dade police Det. Lee Cowart told NPR that when Carlints St. Louis walked into a Florida police station saying his gun had gone missing it was “the icing on the cake” after authorities had been homing in on him in recent weeks. According to an arrest affidavit filed by the Miami-Dade Police Department, St. Louis, 30, was arrested a day after he filed his report with the Hallandale Beach Police Department. Before he had apparently tried to create an alibi for a shooting authorities say he committed, investigators had been interested in him and tracking him. Police say they pinpointed his presence at the scene of the shooting using cellphone tower data.Yet when police searched his car a day after he told authorities his gun was missing, authorities found a semi-automatic ammunition magazine, and the casings matched the rounds recovered from the scene of the shooting that left a man wounded.”Obviously, his own reporting of his gun missing was golden in terms of recovering that magazine,” Cowart said.On July 28, police say St. Louis drove to the Young Israel of Greater Miami Synagogue in North Miami Beach, got out of his car and “assumed a shooting stance while pointing a firearm at the victim,” unloading several rounds at an elderly man preparing for the start of synagogue services, according to an arrest affidavit provided to NPR. The victim, 68-year-old Yosef Lifshutz, was hit by bullets multiple times in the legs. After being rushed to a local hospital, Lifshutz survived and is recovering.Prosecutors said they are investigating the case as a possible hate crime. “Acts of violence will not be tolerated in our community, particularly in sacred places of worship,” said Miami-Dade State Attorney Katherine Fernandez Rundle in a statement to NPR on Wednesday. St. Louis is facing counts of attempted felony murder, discharge of a firearm from a vehicle and aggravated battery on an elderly person.Authorities say St. Louis’ motive for allegedly committed the shooting is still not known. “I am committed to filing the appropriate charges based on the evidence we uncover, and to vigorously prosecute this case to the fullest extent of the law,” Rundle said. St. Louis is being detained as he awaits trial after a judge denied him bail.Copyright 2019 NPR. To see more, visit NPR. Miami Police Arrest Suspect In Shooting After He Reports… last_img read more

JSPL starts Indias largest billet caster plant in Odisha

first_imgJindal Steel and Power Ltd (JSPL) on Wednesday commissioned the country’s largest billet caster plant at Angul in Odisha.The billet caster plant, which would cast molten steel into semis of various sizes and shapes, would help the company to produce various long products used in construction sector. “We have commissioned India’s largest capacity billet caster plant in Angul within a record time of one year; setting yet another benchmark in the country,” JSPL’s Managing Director and Group CEO Ravi Uppal said in a statement.JSPL has a 2.5 mtpa steel making capacity at Angul and the company plans to raise it to six mtpa.Commissioning of the billet caster plant would enable JSPL to produce long products in addition to flat products already produced at the Angul plant.last_img read more

The Capital Cooks in style

first_imgMouth-watering dishes warmed up Delhi’s chilling weather as the annual food festival, Dilli ke Pakwan kicked off in the Capital. The culinary delight of the city saw a large number of visitors pouring from in and around along with foreign tourists. The festival organised by Delhi Tourism was inaugurated by Harsh Vardhan, Union Minister for Science & Technology & Earth Sciences, in the presence of Meenakshi Lekhi, MP, on 24 December at Baba Karag Singh Marg. Ramesh Tiwari, MD & CEO, DTTDC along with Ravi Dadhich, GM, DTTDC were also present at the ocassion.  Also Read – ‘Playing Jojo was emotionally exhausting’While speaking on the occasion, Harsh Vardhan congratulated everyone present and expressed his temptation for food at the festival. He said, “Delhi can be termed as mini-India as the city is true example of unity in diversity”. Vardhan also expressed his passion for good health and advised the visitors on eating in a balanced manner. Meenakshi Lekhi feels that cooking is an art and street food vendors should be given at least a three weeks of training to hone their skills, while she also stressed on the role of entrepreneurship for betterment of the nation. Also Read – Leslie doing new comedy special with NetflixNearly 60 food items are being served at this seven-day street food festival to mark the celebration of Delhi’s culinary diversity. From paneer pakoda, aflatooni tikka to chicken lollipop and mouthwatering halwa and gulab jamuns, all popular dishes from the nook and corner of the city are being served with great hospitality.Fifth in the row, Delhi Tourism has been providing an organised platform to food artistes and ensures that festivals alike impact the tourism circuit in the capital.  Cuisiniers, halwai, cooks and chefs have specially come to Baba Kharak Singh Marg for giving the city a taste of their best dishes all under one roof. Apart, delicacies of Delhi, the venue witnessed cultural activities like katchi-godi, bhopa-bhopi and a lively puppet show in the evening. A daring fire act was also organised, which left the visitors amazement.Dilli Ke Pakwaan’s colourful and informative souvenir was also launched on the occasion.Cultural evenings which includes blazing bhangra performance, a special food quiz and food talk is also to be held. To mark the celebration of the Christmas, large number of people would be attending the festival to enjoy the festivities.last_img read more

NGT slams DTC notice to Tata Ashok Leyland

first_imgThe National Green Tribunal on Monday flayed Delhi Transport Corporation (DTC) for running its air conditioned buses without passengers for a major part of the day.Irked at improper maintenance of the DTC buses, the green panel also issued notice to the Tata Motors and Ashok Leyland, which supply buses, and directed their senior-most official to be present on next date of hearing.“Unfortunately, we also live in Delhi. Your huge buses ply empty for at least five hours a day. Have you rationalised on this aspect? It is shocking that nobody listens in DTC. Your buses are more than overcrowded. Also Read – Man arrested for making hoax call at IGI airport“We are thinking about afternoon when most of your AC buses, which have a capacity of 60, are empty. After 9.30 pm most of your buses which go to airport have only one or two passengers. You are wasting government revenue, creating traffic chaos and causing environmental pollution,” a Bench headed by NGT Chairperson Justice Swatanter Kumar said. The Tribunal’s observation came after DTC MD, who was present in pursuance to the green panel’s notice, told the bench that rationalisation and assessment of bus routes was an ongoing process. Favouring small size buses during lean traffic period, the Tribunal said: “You should change your buses when traffic is lean and ply buses which are smaller in size. We are not asking you to stop the bus service rather you should change the size of bus. Also Read – Disqualified AAP MLA Kapil Mishra, women’s wing chief join BJP“Do you know the cost of running these buses? How many buses have you tested for noise? What do you test the buses for? Have you ever seen a single bus which does not make horrible noise? Their noise is annoying. if anyone is behind that bus he will get mad within no time.” The Tribunal directed DTC to carry out a study to bring base line data, rationalisation of bus routes and details about maintenance of DTC buses “which is not farce”.“We don’t want great thesis. Give us a specific reply,” it said. The Bench also asked DTC officials to apply minds into the design of buses.last_img read more

Drink water avoid smoking to maintain soft lips

first_imgWith the winter season approaching, we need to take extra care of our lips. Drinking a good amount of water, shuffling your professional lip balm with remedies like butter or ghee, and keeping your tongue in check are critical elements of lip care, says as expert. Abhishek Raj, facial aesthetic expert, has rolled out a few tips to battle the problems:1. Drink water: You know that your skin needs hydration and that happens best with the intake of enough water. The same goes for lips. Though people drink enough water in summers, this intake decreases in winters because we do not sweat in the cold season and feel thirsty. Drinking ample amount of water is necessary to replenish the lost moisture from the skin and the lips. Also Read – Add new books to your shelf2. Hold your tongue: Most of us have a habit of licking our lips now and then with our tongue. This tendency increases whenever the lips feel dry and stretched. You need moisture to keep them soft and hydrated and saliva comes handy for this. But, this proves counter-productive and dries away the lips more.3. Avoid vitamin B deficiency: Insufficient consumption of vitamin B not only affects your digestive system’s functioning but it also affects the health of the lips.  Also Read – Over 2 hours screen time daily will make your kids impulsiveThe lips and the corners of the mouth get cracked and deficiency of vitamin B can also cause ulcers in the mouth. Ensure enough intake of vitamin B to keep lips healthy during winters.4. Lip augmentation or hydration procedure: For people who have thin lips and desire a pronounced appearance, dermal fillers like Juvederm are very effective. When administered into the lips, the hyaluronic acid based fillers give volume to the lips.last_img read more

Amit Shahs rally Mamata says all permissions have been given

first_imgKolkata: Chief Mamata Banerjee said the BJP is circulating false news over the state government’s denial to give permission to hold rallies for BJP’s national president Amit Shah in Bengal.Before leaving for North Bengal, the Chief Minister said the state government has given all the necessary permission to hold rallies. “BJP is circulating fake news. We have given every permission. The police have asked to shift the site where a temporary helipad is to come up. Only the place of landing has been changed for safety and security reasons. They have asked for permission at different places and we have given all the permissions,” Banerjee said. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe West Bengal police in its Twitter handle mentioned: “Some media is incorrectly showing that police is not giving permission for Amit Shah’s meetings which the party have applied for in different districts. This is incorrect. The matter is being processed and no objection is being given.” It further stated: “Some problem from security point of view are there for construction of helipads which is also cleared from security angle at appropriate places.” The rallies come close on the heels of a mega public meeting organised in Kolkata’s Brigade Parade Ground by the Trinamool Congress in which all top Opposition leaders from across the country were present.last_img read more

Affluent people exercise weekends

first_imgPeople who have high incomes are more likely to be “weekend warriors,” exercising intensely just few days a week and spending most of their time in sedentary pursuits. Previous research has shown that higher income individuals are more likely to be physically active at a higher intensity.However, the research has historically relied on self- reporting, which may exaggerate actual activity levels.Income has been shown to be a prominent barrier to engaging in physical activity. Also Read – Add new books to your shelfResearchers from the University of Texas and Georgia State University in the US used activity monitors to collect data for the study published in the journal Preventive Medicine.Individuals with low incomes face time constraints as well as other barriers, including lack of exercise facilities, parks and open space, as well as an inflexible work environment, and have been shown to be less likely to meet physical activity guidelines.Meanwhile, higher income individuals who often also have limited time, have more resources and places to exercise, which could facilitate their ability to meet activity guidelines. However, they also are more likely to hold sedentary jobs, like office work. Also Read – Over 2 hours screen time daily will make your kids impulsiveFor the study, researchers used accelerometer data to analyse physical activity and sedentary behavior in relation to income levels among 5,206 US adults.The study found that compared to those making less than USD 20,000 per year, those with an annual income of USD 75,000 or more engaged in 4.6 more daily minutes of moderate to vigorous intensity physical activity as measured by activity monitors.High income individuals also engaged in 9.3 fewer minutes of light intensity activity, spent 11.8 more minutes daily sedentary, were 1.6 times more likely to meet guidelines for a brief 2-day period (‘weekend warrior’), and were 1.9 times more likely to meet guidelines during a 7-day period.”Our findings pertaining to income and the ‘weekend warrior’ effect underscore the importance of tailoring the physical activity message to reflect the constraints of both low and high income individuals,” said Kerem Shuval from American Cancer Society.”To meet guidelines one can engage in 150 minutes of weekly moderate intensity activity over a 2 or 3-day period rather than seven days, for example,” said Shuval.”This can be achieved over a long weekend, a message we may want to convey to those pressed for time. It is important to remember, however, that we should increase the duration and intensity of activity gradually to avoid injury,” he said.”Also, if inactive consult with a physician before embarking on an exercise programme,” he added.last_img read more

Women and cheating All in the looks

first_imgWomen who are perceived as unattractive are more likely to cheat on their partners, while the opposite is true for men, according to a study that identifies predictors for whether your Valentine will be faithful in a long-term relationship. The study by researchers from Florida State University in the US identified some of the strongest predictors of infidelity, including age, marital satisfaction, sexual satisfaction, attractiveness and history of short-term relationships. Also Read – Add new books to your shelfResearchers found younger people and those less satisfied with their relationships were more likely to be unfaithful. People satisfied with sex in their relationship were more likely to engage in infidelity, perhaps suggesting they felt more positive about sex in general and would seek it out regardless of how they felt about their main relationship.Another predictor of infidelity was attractiveness. A person’s own attractiveness was negatively associated with infidelity among women but not men – meaning less attractive women were more likely to have an affair. A partner’s attractiveness was negatively associated with infidelity among men but not women – meaning men were more likely to be unfaithful when their partners were less attractive. Also Read – Over 2 hours screen time daily will make your kids impulsiveA person’s history of sex was a predictor of infidelity, too. Men who reported having more short-term sexual partners prior to marriage were more likely to have an affair, while the opposite was true for women.The research, published in the journal Journal of Personality and Social Psychology, is the first to find evidence of psychological responses that help a person avoid infidelity and stay in a long-term relationship. The team followed 233 newly married couples for up to three and half years and documented intimate details about their relationships, including marital satisfaction, long-term commitment, and whether they had engaged in infidelity and if they were still together. Researchers tested two psychological processes that everyone shares in varying degrees: Attentional Disengagement and Evaluative Devaluation of potential romantic partners. The team tested newlyweds on those processes by showing them photographs of highly attractive men and women, as well as average-looking men and women. Researchers discovered that participants who quickly disengaged their attention from an attractive person were less likely to engage in infidelity. Individuals who looked away in as little as a few hundred milliseconds faster than average were nearly 50 per cent less likely to have sex outside marriage. Conversely, partners who took significantly longer to look away from romantic alternatives had a higher risk of infidelity, and their marriages were more likely to fail.Tendency to devalue, or downgrade, the attractiveness of potential romantic partners also lowered the risk of infidelity and raised likelihood of maintaining the relationship.last_img read more

EC gives nod to Cong for Rahuls rally

first_imgKolkata: Bengal Congress on Tuesday got a nod from the Election Commission (EC) to organise a public rally by the party’s all-India President Rahul Gandhi on March 23 in Malda district, a Congress leader said.Gandhi is set to address a public rally in Malda’s Chanchal as part of the party’s Lok Sabha election campaign in the state. “The Chief Electoral Officer (CEO) of Bengal has granted permission for the rally of Rahul Gandhi at Kolom Bagan ground in Malda’s Chanchal on March 23,” state Congress leader Amitava Chakraborty said. Earlier in the day, a two-member delegation of the Congress met the CEO and complained that Malda district administration was “holding back” the permission for Gandhi’s proposed rally.last_img read more

Longtime NFL coach Dennis Green dead at 67

first_imgFormer #Cardinals coach Dennis Green has passed away, and the NFL will be releasing a statement on his passing shortly. He was 67 years old— Ian Rapoport (@RapSheet) July 22, 2016 Green’s coaching career spanned four decades across the college and professional football.  Green landed his first high profile coaching gig as head coach of Northwestern in 1982.  He later became only the second African American head coach in NFL history, when the Vikings named him to the position in 1992.As an NFL head coach, Green’s best season was with the 1998 Vikings. The team was an unstoppable offensive machine, with breakout rookie Randy Moss and NFL MVP Randall Cunningham, who was out of football prior to Green coaxing him out of retirement. The 15 – 1 Vikings lost the game to the “Dirty Bird” Falcons in overtime.Green most memorable single moment came as head coach of the Arizona Cardinals.  During a press conference after the Cardinals blew a 20 point second half lead to lose to the Bears. Green went off, and uttered the immortal line, “They are who we thought they were.”Dennis Green will be remembered as a respected coach, a people person, and a trailblazer for minority coaches in the NFL. Advertisement Multiple sources are reporting this morning that longtime NFL coach Dennis Green has passed away at the age of 67 from an apparent heart attack. ESPN’s Adam Schefter broke the news, which has been confirmed.Former Vikings and Cardinals coach Dennis Green died early this morning after suffering cardiac arrest, per friend Ray Anderson. He was 67.— Adam Schefter (@AdamSchefter) July 22, 2016 Today in The Herd, Colin spoke with NFL Hall of Famer Chris Carter, who played for Green in Minnesota, about how Green helped him as a player and a man.last_img read more

VIDEO Bubble boy Tom Brady wants to play until hes 75

first_img Advertisement Brady eventually storms out of the meeting after a second proposal is made for him to live inside a bubble dome enclosure, with occasional visitation by his wife and kids.How is Tom Brady’s comedic timing this good? Tom Brady’s health regimen is the stuff of legends. Avocado ice cream, regenerative pajamas, micro-purified reverse osmosis water. While most people are under the impression that Brady wants to play into his 40’s, a new video from inside “TB12 Headquarters” reveals that may just be the tip of the iceberg.The spoof video shows Brady in the emergency “Curse” meeting with his TB12 team while encased in the “TB12 Performance Safety Bubble”, designed to make him “Madden Curse” proof.Brady is pissed about being stuck in a bubble, which is ruining his life, but states his intention to play until he’s 75 years old while giving a barn burner of a motivational speech to staff.“If I’m going to play until I’m 75, it’s because I’m going to fight and die for my right to play this game.” last_img read more

Where the Connected Get Clued In

first_imgNovember 13, 2009 Just like social media itself, seems to have surfaced out of nowhere: Pete Cashmore was a web technology consultant from Scotland who wanted to launch a cool website. He started chronicling his trials on a blog and unintentionally launched what is now one of the web’s most popular sites focused on web 2.0 and social media news.Mashable’s success (gauged by 13 million monthly page views) is an outgrowth of the immense popularity of social media: The site offers news, advice and education and in general keeps the socially networked more socially aware.Revenue comes from a job board, educational events and conferences, as well as advertising and sponsorship. And of course Mashable takes its own advice, employing social media to boost its following. @Mashable has 1.5 million followers and is consistently the most retweeted member on Twitter.”We’re in a fortunate place where our readers essentially do our marketing for us,” Cashmore says.Mashable ListsMashable is becoming known for its topical lists, which range in subject matter from music to politics. The “how-to” lists are particularly popular.’Spark of Genius’ SeriesEach week, the Mashable team highlights a promising new startup and the features that separate it from the competition. Spark of Genius companies must be no more than 3 years old with an active site and have less than $1 million in annual revenue.Job BoardEmployers can post open positions on Mashable for 30 days for $50. “We’ve seen our job boards bring in more revenue recently because of the economic climate,” Cashmore says.The Twitter Guide BookThis user manual teaches not only how to tweet and retweet, but also how to build a community on Twitter and use the tool for small business. “It’s a complete collection of resources for mastering Twitter,” Cashmore says.The BlogMashable’s bloggers review new websites and services, publish breaking news and offer social media resources and guides. “If you don’t have quality content, no one’s going to want to read it or share it,” Cashmore says. This story appears in the December 2009 issue of Entrepreneur. Subscribe » 2 min read Growing a business sometimes requires thinking outside the box. Free Webinar | Sept. 9: The Entrepreneur’s Playbook for Going Global Register Now »last_img read more

21 Apps to Boost Productivity Accountability and Success

first_img Opinions expressed by Entrepreneur contributors are their own. Register Now » Free Webinar | Sept. 9: The Entrepreneur’s Playbook for Going Global Growing a business sometimes requires thinking outside the box. April 13, 2015 No matter how you work or what type of business you run, being productive is a must. But techniques and strategies aren’t enough if you don’t have the tools needed to implement them. Fortunately, there’s an app for that!Here are 21 apps that are guaranteed to boost your productivity, accountability and success:1. AsanaWhile there are tons of different project-management apps out there, Asana is by far one of my favorites. Once set up, this app helps you reduce internal email, delegate tasks and check the status of your projects from one central dashboard.Related: 8 Crucial Apps for Hacking Everything From Lunch to Project Management2. VenmoIf you need to send payments quickly and securely, this is your app. With no forms to fill out and no fees for payment, Venmo is a great alternative to solutions such as Paypal.3. TripItTracking travel is important — not just for organizational purposes, but for expense and tax filing as well. TripIt succeeds in keeping all of your important information in one place.4. Focus@WillDistraction is a huge challenge facing most business owners, but it’s one that can be avoided. If you like to listen to music while you work, check out Focus@Will, an app that provides special playlists designed to improve focus and bolster creativity.5. UberConferenceConference calls on the go can be hit and miss, but not with UberConference. This app lets you to see participants’ LinkedIn profiles and record your meetings so you don’t lose an important point.6. EvernoteOne of the most versatile note-taking and storage apps available, Evernote is accessible from any device. The cloud-based app allows you to store, edit and tag documents for effortless organization.7. SquareWhether you need to take payments on the go occasionally or frequently combine work and travel, Square is the app that can make it happen.8. ProducteevDelegation is an important part of business success, whether your team is large or small. Producteev, a powerful task management program, allows you to easily assign tasks to other team members, as well as hold them accountable.9. FlipBoardStaying up to date on news and industry changes is easy with FlipBoard. Don’t waste time flipping between a dozen different websites — this app summarizes your favorite feeds in one place.10. Pocket AnalyticsEvery business owner should know the status of his or her business at all times, and that includes web analytics. This app provides an easy-to-read mobile overview and a dashboard that tracks multiple services.Related: Microsoft Brings Document Scanner App to iPhones, Android11. ContactuallyKeeping in touch with members of your network is important, and Contactually makes it easy. Allowing you to segment your contacts and assign follow-up cycles to each category, this app makes sure you never lose touch with your team or your prospects.12. RefreshEver shown up to a meeting, only to be embarrassed by your lack of knowledge about the person you’re connecting with? With Refresh — which syncs with Facebook, LinkedIn and other services — you’ll have all the information about the person you’re meeting and your past interactions at your fingertips.13. SunriseIf you’ve got multiple calendars floating around, you need Sunrise. This easy-to-use calendar app connects seamlessly to all major calendar services, allowing you to stay on task and productive.14. TrackMavenStaying ahead of your competition is a challenge, but TrackMaven can help. The app can optimize your content distribution and help you identify marketing opportunities, while also tracking your competitors’ content and strategies.15. Invoice2GoNever forget to invoice a customer again! This app enables you to send professional-looking invoices quickly, no matter where you are, ending overlooked billing and forgotten amounts due.16. SkitchSkitch makes it effortless to add markup or annotations to existing content. If your job involves providing frequent feedback, this app makes it easy to give and simple to understand!17. MintProper money management is important, whether you’re saving up personally for an upcoming expense or a Fortune 500 company managing a vast number of people and resources. With Mint, you can get a quick snapshot of your financial situation any time you log in to your account.18. EchoSignNever find yourself scrambling for a scanner again! EchoSign lets you to sign vital business documents electronically and records your document history, making future document audits painless.19. HootsuiteSave time on your social media marketing efforts by managing all of your social profiles in a single app with Hootsuite. It’s an easy way to take the pain out of maintaining and updating multiple accounts.20. BoxBox is a cloud storage system that helps you track your projects in real-time — an essential feature if you work with a remote team. Even better, the program’s responsive design allows Box to be effective no matter what device you use.21. IFTTTA great app with a huge range of applications, IFTTT allows you to create programs that respond to events with a certain action. For example, the app can be used to send an Instagram post to Facebook, or to send you a text if a weather event is brewing in your area. The possibilities truly are endless.Have another app that you think belongs on this list? Share your favorites by leaving a comment below!Related: 8 Tools That Help You Perform Day-to-Day Tasks More Efficiently 5 min readlast_img read more

This Gadget Lets You Text and Use Apps While Driving Without Looking

first_img How Success Happens Ding. You get a new notification on your phone. You want to check it. No, you need to, really badly, but you’re driving. Ah, screw it. You glance down, away from the road, and you check the darn thing anyway. It’s a potentially deadly decision millions of people make multiple times a day, one that Tel Aviv startup Project RAY aims to drive down with its new “eyes-free” RayGo device.Image credit: Project RAYThe black and yellow gadget, derived from patented smartphone technology originally created for the blind, enables you to talk on your phone and check your texts, email, and a host of apps while driving — without taking your eyes off the road.Related: Handy Gadget is Like Google Glass For Your CarTo use it, you first clamp the five-button, hard plastic RayGo controller to your steering wheel. Then you pair it with your vehicle’s Bluetooth feature. The RayGo unit, working with its companion mobile app (Android-only for now), converts your favorite apps, like Gmail, Spotify, your smartphone’s calendar, etc., to “drive mode.” The mode is essentially a simplified version of your existing apps that programs them to “talk” to you.To respond to the RayGo-adapted versions of your apps, you can use the steering wheel remote or speak certain voice commands. Pressing up or down on the remote (using your thumb) scrolls through various menu options. Press the left side of the RayGo remote button to navigate back and press the right to signify “enter” or to give a voice command. You can scroll through and select which messages and notifications to listen to, then respond to them either by canned RayGo text responses (“Sure! I’m driving. Will call later,” “Call soon,” “I’m busy,” and “Can’t talk right now”) or by speaking certain specific commands.  RayGo’s inventors, Israeli entrepreneurs Michael Vakulenko and Boaz Zilberman, designed the gadget to stop functioning when you shouldn’t be using it. Relying on your smartphone’s accelerometer and GPS components, RayGo knows when you’re driving fast or executing a turn. When speeding along at a good clip, the device’s audible responses become delayed and more pronounced, reports USA Today. When you receive a message while in the middle of a turn, RayGo will pause until you finish the turn.  Related: Texting and Driving? Not So Fast — General Motors is Watching YouDespite being billed as an anti-distraction device, some claim that the RayGo in and of itself is a distraction, pulling your focus away from driving, even momentarily. It also somewhat limits where and how you hold your steering wheel and could possibly obstruct airbag deployment.  There’s a similar product called Navdy set to launch soon. Spun as a kind of “Google Glass for your car,” it’s a heads-up display that allows drivers to obtain directions and receive notifications on a dashboard-mounted transparent screen. Pre-ordering the unit will set you back $299.RayGo is significantly cheaper at only $55 per device. The gadget, available for pre-order on Indiegogo right now, already surpassed its $30,000 funding goal on the popular crowdfunding platform with 13 days to go. Shipping is slated to start this October. For an amusing and alarming look at how it works, check out the promo video below:For a more detailed RayGo test-drive, watch this demo:Related: 5 Antidotes for Chronic Digital Distraction May 4, 2015 3 min readcenter_img Hear from Polar Explorers, ultra marathoners, authors, artists and a range of other unique personalities to better understand the traits that make excellence possible. Listen Nowlast_img read more

Why BigName Investors Like Mark Cuban Are Disrupting the Legal Profession

first_imgOctober 30, 2018 This hands-on workshop will give you the tools to authentically connect with an increasingly skeptical online audience. Enroll Now for Free It does not seem an obvious or exciting industry for big-name investors. But, some of the most famous entrepreneurs — now including billionaire Mark Cuban — are putting their money into disrupting the legal profession.Related: 10 Things Mark Cuban Says to Do With Your MoneyWhether it is automating tasks, fighting parking tickets or giving consumers better access to justice, legaltech companies are close to raising $1 billion in funding in 2018, in contrast to $233 million in 2017.The cash flowing to the industry is hitting new heights, but the profile of entrepreneurs backing transformation in the $600-billion legal industry is also growing. Mavericks owner and Shark Tank investor Cuban revealed to me he made an investment (he would not disclose the amount) in a so-called access to justice technology company. Paladin, which streamlines pro bono management, recently partnered with Dentons — the largest law firm in the world by headcount — to help users discover pro bono opportunities without having to seek them out themselves. The need for technology to help solve legal problems was highlighted in one report that found that 86 percent of civil legal problems among low-income Americans fail to achieve adequate legal redress.In this vein, Cuban’s investment in Paladin is designed to streamline pro bono management providing legal help for millions that will not otherwise have access to justice.Cuban told me in an email: “What impressed me about Paladin’s team is that they’re applying a business framework to an important social problem. With Paladin, lawyers can work on issues they’re passionate about and teams can leverage pro bono to build their businesses. It’s an important mission that I’m proud to be part of.”Related: What Mark Cuban Learned From His 6 Biggest FailuresEndorsement from high-profile investors is causing waves in an industry that has previously shunned the limelight, and innovation. This attitude has helped propagate inefficient and costly ways of working. Suddenly, lawyers are watching legal tech companies raise investment like the leading startups of Silicon Valley.In another landmark investment, Justin Kan, co-founder of livestreaming service Twitch, raised $65 million earlier this year for his year-old legal startup Atrium. The company uses a team of lawyers, engineers and business operations experts to supply companies with their legal needs in a more predictable and cost-efficient way.Discussing the need for investment to break new boundaries in getting legal deals done faster, he told Forbes: “This was a problem I’d seen in my own experiences, where all these parts around legal were like a blocker to what I wanted to do, and the legal bills felt like Russian roulette. It’s almost like a tax you have as a business owner. That’s why I wanted to attack this problem.”In particular, there has been an increase in investment as the number of legal AI companies has increased by 65 percent in the past year. Investment in legal AI companies in 2018 has already reached $355 million — with cash earmarked to boost capabilities and meet a growing demand among legal professionals to do high-volume and mundane legal work faster and more accurately.Related: 10 Lawyers-Turned-Entrepreneurs Creating a Revolution in LawThis has attracted high-profile investors including tech billionaire Mike Lynch, an investor in Luminance, a startup that uses artificial technology to aid law firms with the complex process of due diligence for mergers and acquisitions. Best known for starting Autonomy, sold to Hewlett-Packard in an $11 billion deal, Lynch told Business Insider that the use of artificial intelligence in the legal field “is like seeing a steam engine for the first time. What this is is probably an example of what’s going to be changing a lot of things. If you can get machine technology to be reading contracts, it’s going to be changing a lot of the world around us … you’re seeing the beginning of a new age.”Eden Shochat, a partner at Aleph VC whose portfolio includes co-working giant WeWork, website builder Wix, and insurance tech leader Lemonade, recently invested in LawGeex (the company I work for), which uses AI to end the bottleneck of getting business deals being signed.However, as he points out in a recent Medium blog — in a point echoed by other investors in legal — there is still a long way to go for the profession to catch up with other industries. Shochat says, “If you compare the legal industry to the tech investments made by the financial industry, you will understand the vast opportunity. JPMorgan’s 2017 revenue was $94 billion, and they spent an astounding $9.5 billion on technology. That is more than 10 percent of their revenue and over 10 times more spend on tech than the legal industry.”In another example of the game-changing nature of such technology, Joshua Browder’s DoNotPay legal bot gained $1.1 million in seed funding, led by one of the most important venture capital firms in the world, Andreessen Horowitz. Originally begun as a parking ticket appeal site, this cash has allowed the company to recently launch an iOS app which advertises that it can be used to “sue anyone by pressing a button.” It is focused on empowering individuals to sue corporations using technology to strip away complex bureaucracy.For the entrepreneurs, having the backing of big-name investors is sending an important signal to the profession that change is on the way. Kristen Sonday, co-founder of Paladin, told me in an email, “While a challenge initially, we’re grateful to have found incredible investors who are passionate about Paladin’s mission to increase access to justice. Thankfully, impact investing in the space is becoming more prevalent, but being on the frontier is never easy.” Free Workshop | August 28: Get Better Engagement and Build Trust With Customers Now Opinions expressed by Entrepreneur contributors are their own. 5 min readlast_img read more