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Tuesday, April 19, 2005

MIT has announced that Elwood “Woody” Norris, inventor of potentially revolutionary technologies of Hypersonic Sound beams and AirScooter flying vehicles, will receive this year’s Lemelson-MIT prize for invention this Friday, April 22. The prize comes with an award of US$500,000, making it the largest single award for invention given in the United States.

Monday, November 14, 2016

On Wednesday, India demonetised ?500 (about US$7.50) and ?1000 notes, announced as a measure to fight corruption, fake notes, and black money. Prime Minister Narendra Modi addressed the Indian citizens late Tuesday, and said 500 and 1000 rupee notes would cease to be legal tender at midnight.

To minimise possible difficulties to citizens, transactions using old 500 and 1000 rupee notes were accepted at government hospitals, railway ticket bookings, government buses, and airports. The notes were also accepted at public-sector petrol-pumps, government-authorised consumer co-operative stores, milk booths authorised by State governments, and cremation grounds till Friday midnight. These shops were obliged to have a record of their stocks and sales.

In his announcement, Modi said, “For your immediate needs, you can go to any bank, head post office or sub post office, show your identity proof like Aadhar card, voter’s card, ration card, passport, income tax PAN card number or other approved proofs and exchange your old 500 or thousand rupee notes for new notes.” ^{((hi))Hindi language: ??????? ???????? ?? ??? ???? ?? ?? ?? ???? ?? ?????? ????? ?? ??? ??? ?????? ????? ?? ??? ?? ????? ?? ??? ?????? ?? ?? ???? ?? ???? ?? ?????? ?? ?? ??? ?? ?? ?????? ?? ???? ????? ????, ???? ??, ???? ?????, ?????? ?????, ???? ?????, ????????, ???? ????? ??? ????? ??????? ???? ?? ??? ??? ??? ???? ?? ??? ??? ???? ???}

Modi also announced those who failed to change their currency till December 30 can exchange the notes at Reserve Bank of India (RBI)’s office along with a declaration form till March 31. The notes can be exchanged till December 30 at any branch of any bank across India.

By Saturday, Finance Minister Arun Jaitley said demonetised money equivalent to almost US$30 billion was deposited in banks across India. According to estimate, the old notes accounted for 85% of the total money in circulation. New 500 rupee and 2000 rupee notes are to be issued. Modi said RBI would exercise caution from past experience and limit the circulation of large-value notes.

International tourists could purchase up to 5000 rupees using the old notes at airport exchanges till Friday.

A limit was imposed on cash withdrawal; a maximum of 10000 rupees each day, and 20000 rupees each week, can be withdrawn. Moreover, from Thursday (November 10) till November 24, 4000 rupees can be exchanged in the banks and post offices. The amount is credited to the bank account.

Government workers were informed about demonetising when the announcement was made. Modi announced all banks would remain closed for public work on Wednesday.

In the United States, Donald Trump won the 2016 presidential election on Tuesday, immediately after which stock markets dropped globally. Following the US election and demonetising the money, the Indian stock market fell by 1700 points on Wednesday. Sensex lost 1,688.69 points and Nifty lost 111.55 points on the same day. Indian technology sector companies experienced loss. TCS suffered 4.93% loss and Infosys lost 2.74%.

The Indian rupee is also used in the neighbouring countries of Bhutan and Nepal. The border area uses Indian currency for day-to-day transactions. The Royal Monetary Authority of Bhutan (RMA) has announced the exchange of old notes will be facilitated till December 15. RMA governor Dasho Penjore informed Indian news site The Wire, “We do not know exactly how much Indian currency of Rs 500 and Rs 1,000 is in circulation in Bhutan. We will get a better idea after the deadline to deposit their amount”. RMA has 30% of its international exchange reserve in Indian rupees. Nepal Rastra Bank directed all Nepali banks to stop conducting transactions using the Indian rupee.

On Thursday, there were long queues in front of ATMs and banks to exchange the old notes and withdraw money. BBC reported some banks ran out of cash. Police were called to some banks to maintain discipline. Banks were open on Saturday and Sunday for money exchange.

Shops did not accept the old 500 and 1000 rupee notes. Some emphasised cash-less transaction as well. BBC reported some traders and small business owners in Delhi threatened to call a strike as this move affected their business.

eRetail websites like Amazon and Flipkart announced they would not accept the old 500 and 1000 rupee notes on Cash on Delivery orders. Amazon also announced 15% discount on gift cards worth 500 or 1000 rupees.

The government ceased all transactions using the old 500 and 1000 rupee notes before Saturday. But a Wikinews correspondent noticed a jeweler shop accepting the demonetised notes on Saturday. When questioned, the jeweler said they were accepting the old notes only on purchase. When the correspondent, who did not identify as a reporter to the shop owners, said the old 500 and 1000 rupee notes were not legal money, they said they will exchange the notes in a bank since there were 50 days to exchange with a new and legal tender. They refused to exchange old 500 rupee notes with change, asserting the customer needs to buy merchandise from their shop.

Tuesday, May 20, 2008

The discovery of the presence of airborne asbestos in a middle school in Montclair, New Jersey Friday prompted the evacuation of over 200 students from the school and the school’s closure. Renaissance Middle School, part of the Montclair Public Schools in New Jersey, was closed Monday and remains closed Tuesday while undergoing asbestos testing and cleaning.

According to a letter sent home to parents by the Superintendent’s Office of Montclair Public Schools on Friday, “plaster may have been disturbed” during construction on new fire doors at the Renaissance School building on Thursday.

An inspection arranged by the school district indicated asbestos was present in the plaster, and a subsequent inspection performed by asbestos consultant Detail Associates revealed “a level of airborne asbestos fibers that exceeded the acceptable range” in the third floor hallway of the school. Montclair Public Schools business administrator Dana Sullivan told The Star-Ledger that testing conducted on March 31 revealed the presence of asbestos in a brown undercoating of plaster at the Renaissance School building.

The affected area was sealed off, and some students were moved to other areas of the building while others were moved to off-site locations. District Public Information Officer Laura Federico told The Montclair Times that sixth and seventh graders were transported to Hillside Elementary School, and eighth graders were bussed to Montclair High School. “The safety of our students and staff is always our first concern,” said Federico.

According to The Montclair Times, Detail Associates conducted a cleaning protocol at the school on Saturday and tested the building to make sure it did not contain unacceptable levels of asbestos fibers. The letter sent to parents Friday by the Superintendent’s Office said that Detail Associates had told the district that the building would be “cleaned, tested and cleared for occupancy by Monday morning”. The school remained closed Monday, and a meeting was held between parents and school district officials. A Parent-Teacher Association meeting is planned for Wednesday night.

The Star-Ledger reported that the ongoing asbestos cleanup of the school is being supervised by the state Department of Environmental Protection. At the meeting Monday morning between parents and school district officials, parents demanded that the inside of lockers be included as part of the asbestos cleanup. This additional step in the asbestos inspection process prompted the school’s closure Tuesday. A Monday statement by the Business Office of Montclair Public Schools said that the Renaissance School would remain closed Tuesday for sixth and seventh grade students “so that an extensive cleanup and additional asbestos testing can be completed”. Eighth grade students did not have classes scheduled as a trip to Washington, D.C. had previously been planned; the school trip is unaffected by the recent asbestos incident.

Steve Jaraczewski of Detail Associates was present at the district meeting Monday, and said that one of four test samples taken at the school was positive for the presence of airborne asbestos at over six times acceptable levels. Jaraczewski was critical of the asbestos management plan provided by Roman Catholic Archdiocese of Newark, which owns the school’s building and leases it to Montclair Public Schools.

Jaraczewski said that the state Department of Environmental Protection has required asbestos management plans since 1988, but that the company that drafted the asbestos plan for the Archdiocese of Newark is out of business. Representative for the archdiocese Jim Goodness emphasized that the building would be back open for classes soon. “The kids will be able to go back to school soon, and that’s the important part,” said Goodness.

Exposure to airborne asbestos can lead to mesothelioma, a cancer which develops in the sac surrounding the lungs and chest cavity, abdominal cavity, or the sac surrounding the heart. Exposure to disturbed asbestos fibers can also lead to lung scarring, a condition called asbestosis, and lung cancer. Patients with malignant mesothelioma generally do not have positive outcomes, and once diagnosed have six months to a year to live.

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Tuesday, March 24, 2009

During a seminar with students at the Mechinat Rabin in Oranim, Israeli veterans of the 2008–2009 Israel–Gaza conflict revealed accounts of the deaths of unarmed civilians. This has prompted new allegations of war crimes and a review and investigation into the rules of engagement within the Israel Defense Forces (IDF).

There are two accounts in which fears of war crimes have been raised. In one, an Israeli commander ordered the killing of an old woman walking down a road and coming within 100 metres of an IDF position. There was no warning that a perimeter existed, no attempt was made at a warning and no attempt was made to ascertain as to whether the old woman posed a threat.

In a second account a woman and her two children were killed by a sniper when she was ordered to leave a building being occupied by Israeli soldiers. The commander of the unit commandeering the building however failed to inform a sniper placed on a roof top and the three were killed according to standing instructions issued to the sniper.

In addition to specific cases, the veterans spoke of a general contempt towards the Palestinians, and disregard for their lives. One squad leader speaking at the military academy said that the attitude of those both above and below was that”…we should kill everyone there [in…Gaza]. Everyone there is a terrorist.” With his immediate commanding officer advocating the clearing of buildings by shooting all within without warning.

An Israeli spokes person speaking to the BBC said that the incidents spoken of were well known within the brigade responsible and that any actions that took place were within its rules of engagement, however in response to the accusations the Military Advocate General of the IDF, Brigadier General Avichai Mendelblit has instructed the Israeli Military Police Investigation unit to investigate the allegations.

Talking to Israel Radio Israeli Minister of Defense Ehud Barak said that the IDF is “…the most moral army in the world” though individual exceptions may have occurred, and that these would be investigated.

Others in Israel whilst not denying that these incidents might have occurred speak of lack a context in which they have been reported.

Internationally the accusations are not seen as individual soldiers being responsible for war crimes but that war crimes may have been committed by the Israeli military as a whole, that its rules of engagement were drafted and implemented in such a way that they failed to sufficiently distinguish between combatants and civilians.

In response to the allegations Richard Falk, the UN special rapporteur for human rights in the Palestinian territories, said that the Geneva Conventions required that there had to be a clear distinction between military targets and the civilian population and that “…If it is not possible to do so, then launching the attacks is inherently unlawful and would seem to constitute a war crime of the greatest magnitude under international law…”

If it is to have indeed failed to protect the lives of Palestinian civilians then the Israeli military not only violated international law but its own moral code of conduct as outlined in its tenet of purity of arms.

Wednesday, February 4, 2009

A new historic physics record has been set by scientists for exceedingly small writing, opening a new door to computing‘s future. Stanford University physicists have claimed to have written the letters “SU” at sub-atomic size.

Graduate students Christopher Moon, Laila Mattos, Brian Foster and Gabriel Zeltzer, under the direction of assistant professor of physics Hari Manoharan, have produced the world’s smallest lettering, which is approximately 1.5 nanometres tall, using a molecular projector, called Scanning Tunneling Microscope (STM) to push individual carbon monoxide molecules on a copper or silver sheet surface, based on interference of electron energy states.

A nanometre (Greek: ?????, nanos, dwarf; ?????, metr?, count) is a unit of length in the metric system, equal to one billionth of a metre (i.e., 10^-9 m or one millionth of a millimetre), and also equals ten Ångström, an internationally recognized non-SI unit of length. It is often associated with the field of nanotechnology.

“We miniaturised their size so drastically that we ended up with the smallest writing in history,” said Manoharan. “S” and “U,” the two letters in honor of their employer have been reduced so tiny in nanoimprint that if used to print out 32 volumes of an Encyclopedia, 2,000 times, the contents would easily fit on a pinhead.

In the world of downsizing, nanoscribes Manoharan and Moon have proven that information, if reduced in size smaller than an atom, can be stored in more compact form than previously thought. In computing jargon, small sizing results to greater speed and better computer data storage.

“Writing really small has a long history. We wondered: What are the limits? How far can you go? Because materials are made of atoms, it was always believed that if you continue scaling down, you’d end up at that fundamental limit. You’d hit a wall,” said Manoharan.

In writing the letters, the Stanford team utilized an electron‘s unique feature of “pinball table for electrons” — its ability to bounce between different quantum states. In the vibration-proof basement lab of Stanford’s Varian Physics Building, the physicists used a Scanning tunneling microscope in encoding the “S” and “U” within the patterns formed by the electron’s activity, called wave function, arranging carbon monoxide molecules in a very specific pattern on a copper or silver sheet surface.

“Imagine [the copper as] a very shallow pool of water into which we put some rocks [the carbon monoxide molecules]. The water waves scatter and interfere off the rocks, making well defined standing wave patterns,” Manoharan noted. If the “rocks” are placed just right, then the shapes of the waves will form any letters in the alphabet, the researchers said. They used the quantum properties of electrons, rather than photons, as their source of illumination.

According to the study, the atoms were ordered in a circular fashion, with a hole in the middle. A flow of electrons was thereafter fired at the copper support, which resulted into a ripple effect in between the existing atoms. These were pushed aside, and a holographic projection of the letters “SU” became visible in the space between them. “What we did is show that the atom is not the limit — that you can go below that,” Manoharan said.

“It’s difficult to properly express the size of their stacked S and U, but the equivalent would be 0.3 nanometres. This is sufficiently small that you could copy out the Encyclopaedia Britannica on the head of a pin not just once, but thousands of times over,” Manoharan and his nanohologram collaborator Christopher Moon explained.

The team has also shown the salient features of the holographic principle, a property of quantum gravity theories which resolves the black hole information paradox within string theory. They stacked “S” and the “U” – two layers, or pages, of information — within the hologram.

The team stressed their discovery was concentrating electrons in space, in essence, a wire, hoping such a structure could be used to wire together a super-fast quantum computer in the future. In essence, “these electron patterns can act as holograms, that pack information into subatomic spaces, which could one day lead to unlimited information storage,” the study states.

The “Conclusion” of the Stanford article goes as follows:

The team is not the first to design or print small letters, as attempts have been made since as early as 1960. In December 1959, Nobel Prize-winning physicist Richard Feynman, who delivered his now-legendary lecture entitled “There’s Plenty of Room at the Bottom,” promised new opportunities for those who “thought small.”

Feynman was an American physicist known for the path integral formulation of quantum mechanics, the theory of quantum electrodynamics and the physics of the superfluidity of supercooled liquid helium, as well as work in particle physics (he proposed the parton model).

Feynman offered two challenges at the annual meeting of the American Physical Society, held that year in Caltech, offering a $1000 prize to the first person to solve each of them. Both challenges involved nanotechnology, and the first prize was won by William McLellan, who solved the first. The first problem required someone to build a working electric motor that would fit inside a cube ¹/₆₄ inches on each side. McLellan achieved this feat by November 1960 with his 250-microgram 2000-rpm motor consisting of 13 separate parts.

In 1985, the prize for the second challenge was claimed by Stanford Tom Newman, who, working with electrical engineering professor Fabian Pease, used electron lithography. He wrote or engraved the first page of Charles Dickens’ A Tale of Two Cities, at the required scale, on the head of a pin, with a beam of electrons. The main problem he had before he could claim the prize was finding the text after he had written it; the head of the pin was a huge empty space compared with the text inscribed on it. Such small print could only be read with an electron microscope.

In 1989, however, Stanford lost its record, when Donald Eigler and Erhard Schweizer, scientists at IBM’s Almaden Research Center in San Jose were the first to position or manipulate 35 individual atoms of xenon one at a time to form the letters I, B and M using a STM. The atoms were pushed on the surface of the nickel to create letters 5nm tall.

In 1991, Japanese researchers managed to chisel 1.5 nm-tall characters onto a molybdenum disulphide crystal, using the same STM method. Hitachi, at that time, set the record for the smallest microscopic calligraphy ever designed. The Stanford effort failed to surpass the feat, but it, however, introduced a novel technique. Having equaled Hitachi’s record, the Stanford team went a step further. They used a holographic variation on the IBM technique, for instead of fixing the letters onto a support, the new method created them holographically.

In the scientific breakthrough, the Stanford team has now claimed they have written the smallest letters ever – assembled from subatomic-sized bits as small as 0.3 nanometers, or roughly one third of a billionth of a meter. The new super-mini letters created are 40 times smaller than the original effort and more than four times smaller than the IBM initials, states the paper Quantum holographic encoding in a two-dimensional electron gas, published online in the journal Nature Nanotechnology. The new sub-atomic size letters are around a third of the size of the atomic ones created by Eigler and Schweizer at IBM.

A subatomic particle is an elementary or composite particle smaller than an atom. Particle physics and nuclear physics are concerned with the study of these particles, their interactions, and non-atomic matter. Subatomic particles include the atomic constituents electrons, protons, and neutrons. Protons and neutrons are composite particles, consisting of quarks.

“Everyone can look around and see the growing amount of information we deal with on a daily basis. All that knowledge is out there. For society to move forward, we need a better way to process it, and store it more densely,” Manoharan said. “Although these projections are stable — they’ll last as long as none of the carbon dioxide molecules move — this technique is unlikely to revolutionize storage, as it’s currently a bit too challenging to determine and create the appropriate pattern of molecules to create a desired hologram,” the authors cautioned. Nevertheless, they suggest that “the practical limits of both the technique and the data density it enables merit further research.”

In 2000, it was Hari Manoharan, Christopher Lutz and Donald Eigler who first experimentally observed quantum mirage at the IBM Almaden Research Center in San Jose, California. In physics, a quantum mirage is a peculiar result in quantum chaos. Their study in a paper published in Nature, states they demonstrated that the Kondo resonance signature of a magnetic adatom located at one focus of an elliptically shaped quantum corral could be projected to, and made large at the other focus of the corral.

Wednesday, October 21, 2009

Two passenger trains collided in India early on Wednesday, killing at least 21 people and injuring more than twenty others, reports have said. The accident occurred at around 05.30 local time (00.00 UTC), when a passenger train collided with another train which was waiting at a red signal near the northern city of Agra.

Both the trains were in the final leg of their journey at the time of the collision. They were heading to the capital, New Delhi, which is about 200 kilometers north of the accident site.

Passengers said that they were sleeping when they felt a heavy jolt. One eyewitness told television crews that people on the upper berths of the train came tumbling down due to the impact: “We felt a massive jolt. People sleeping on upper berths fell to the floor.”

“There was a loud bang and we were suddenly thrown out of our seats. There was panic everywhere,” another passenger recounted.

A northern railway spokesman, R. D. Vajpayee, told the Voice of America news agency that the rear coach of the stationary train bore the brunt of the collision’s impact. “We had to rescue, take out the passengers which were trapped in the last coach. And, gas cutters were used, and we had called the army also. They had assisted us and, within a few hours, we had completed with rescue operations.”

An unnamed eyewitness told the CNN-IBN news agency that “there are many people who are injured and many people who are dead. A lot of people fell onto the tracks because of the impact of the collision.”

Railway officials said they are not certain what caused the accident, but one of the trains may have overlooked a signal to stop. An inquiry into the incident has been ordered.

Trains are the most popular mode of long-distance travel in India. India operates one of the most extensive and busiest rail networks in the world; 9,000 passenger trains run every day, carrying more than eighty million people daily across the country. There are about 300 rail accidents in the country every year, prompting calls for improving safety standards on the rail network. Earlier this month, one person was killed when a train derailed. In February, another train accident in eastern India claimed sixteen lives.

Saturday, March 13, 2010

A Nigerian airplane crashed in the city of Port Harcourt yesterday, resulting in several minor injuries.

The plane was supposed to be taking part in a mock rescue exercise, and was carrying 30 members from the National Emergency Management Agency and other emergency workers, when it slid off the runway and into some bushes after landing at Port Harcourt International Airport.

The rescue workers on the ground, intended to participate in the emergency drill, instead had to deal with a real emergency; however, only a few people on board the aircraft sustained minor wounds.

A spokeswoman for the police, Rita Inoma-Abbey, commented today that “[n]o life was lost, but the aircraft was severely damaged.”