Slashdot Mirror
Domain: weblogs.com
Stories and comments across the archive that link to weblogs.com.
Stories · 450
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'Cut and Paste' Is Out, 'Pick and Drop' Is In
Roland Piquepaille writes "How do you exchange a file with a colleague or a photograph with a family member? Chances are that you cut the desired element and paste it into your e-mail program to send it. Now, imagine yourself in a meeting, picking a file on your PDA with a digital pen and using the same pen to drop it on your friend's laptop screen. This is exactly what Jun Rekimoto and his team at Sony Interaction Laboratory have developed with their 'pick and drop' technique. BBC News looks at this project in Digital pen takes on mouse. Because it's based on cheap and existing components, such a system might be released in the near future, though Sony hasn't announced any plans to do it. You'll find more details and pictures in this overview." -
'Cut and Paste' Is Out, 'Pick and Drop' Is In
Roland Piquepaille writes "How do you exchange a file with a colleague or a photograph with a family member? Chances are that you cut the desired element and paste it into your e-mail program to send it. Now, imagine yourself in a meeting, picking a file on your PDA with a digital pen and using the same pen to drop it on your friend's laptop screen. This is exactly what Jun Rekimoto and his team at Sony Interaction Laboratory have developed with their 'pick and drop' technique. BBC News looks at this project in Digital pen takes on mouse. Because it's based on cheap and existing components, such a system might be released in the near future, though Sony hasn't announced any plans to do it. You'll find more details and pictures in this overview." -
WiFi Gone Wild
b4k4 writes "According to this news release, the Texas Department of Transportation is proposing to install hotspots at all 84 Safety Rest Stops and 12 Travel Information Centers statewide. This would be in addition to the four test locations already in place along US287." Reader polluted notes that Portland is working on free WiFi. An anonymous reader sent in word of this year's wifi-shootout, a contest to maximize the range for an 802.11b connection. And Roland Piquepaille writes in regarding cows wearing WiFi collars, which I'm afraid reminds me of a crummy sci-fi movie. -
Was Zuse's Z3 the First Programmable Computer?
Roland Piquepaille writes "Several years before the Colossus in the U.K. and the ENIAC in the U.S., the Z3, built by Konrad Zuse in 1941, was crunching numbers in Germany. In a short article, the Register reports on allegations that the Z3 was the first programmable computer. Based on a binary floating-point number and switching system, it had all the attributes of today's computers, such as a control block, a memory, and a calculator. But it didn't have the ability to store the program in the memory together with the data because the memory was too small. It had a 64-word memory of 22 bits each and was able to handle four additions per second and to do a multiplication in about five seconds. And it was pretty big: five meters long, two meters high, and 80 centimeters wide. It was destroyed during WWII, and later rebuilt in 1960/1961. You'll find more details, pictures and references in this analysis of this ancestor of modern computing. [Additional note: you can find other references to the Z3, Colossus and Eniac computers in this former Slashdot item, posted in October 2000.]" -
Was Zuse's Z3 the First Programmable Computer?
Roland Piquepaille writes "Several years before the Colossus in the U.K. and the ENIAC in the U.S., the Z3, built by Konrad Zuse in 1941, was crunching numbers in Germany. In a short article, the Register reports on allegations that the Z3 was the first programmable computer. Based on a binary floating-point number and switching system, it had all the attributes of today's computers, such as a control block, a memory, and a calculator. But it didn't have the ability to store the program in the memory together with the data because the memory was too small. It had a 64-word memory of 22 bits each and was able to handle four additions per second and to do a multiplication in about five seconds. And it was pretty big: five meters long, two meters high, and 80 centimeters wide. It was destroyed during WWII, and later rebuilt in 1960/1961. You'll find more details, pictures and references in this analysis of this ancestor of modern computing. [Additional note: you can find other references to the Z3, Colossus and Eniac computers in this former Slashdot item, posted in October 2000.]" -
The Swarm Constellation Will Look Inside the Earth
Roland Piquepaille writes "Among six Earth Explorer candidate missions, the European Space Agency (ESA) has chosen a 'Swarm' of satellites to look inside the Earth and to do the best survey ever of the Earth's geomagnetic field. The mission, scheduled for launch in 2009, will consist of three satellites released by a single rocket. Two will fly side-by-side 450 km above us while the third one will cruise at an altitude of 530 km. In "ESA to probe Earth's magnetic field," the Register also looks at this future mission which will lead to a better analysis of the Sun's influence in our solar system. More details and illustrations are available in this overview." -
The Swarm Constellation Will Look Inside the Earth
Roland Piquepaille writes "Among six Earth Explorer candidate missions, the European Space Agency (ESA) has chosen a 'Swarm' of satellites to look inside the Earth and to do the best survey ever of the Earth's geomagnetic field. The mission, scheduled for launch in 2009, will consist of three satellites released by a single rocket. Two will fly side-by-side 450 km above us while the third one will cruise at an altitude of 530 km. In "ESA to probe Earth's magnetic field," the Register also looks at this future mission which will lead to a better analysis of the Sun's influence in our solar system. More details and illustrations are available in this overview." -
Wireless Sensors Monitor Glacier Behavior
Roland Piquepaille writes "In a world premiere, an interdisciplinary team of the University of Southampton, GlacsWeb, has deployed a network of wireless sensors inside a Norwegian glacier to record its behavior. This news release, "Sensor Technology Comes in from the Cold" says that the sensor probes, housed in 'electronic pebbles,' are buried 60 meters under the surface of the glacier. And they transmit wirelessly their observations about temperature, pressure or ice movement to a base station located on the surface, which relays the readings to a server in the UK by mobile phone. The researchers think that similar sensor webs will soon be deployed around the world to watch what is changing in our environment. You'll find more details and pictures in this overview." -
Wireless Sensors Monitor Glacier Behavior
Roland Piquepaille writes "In a world premiere, an interdisciplinary team of the University of Southampton, GlacsWeb, has deployed a network of wireless sensors inside a Norwegian glacier to record its behavior. This news release, "Sensor Technology Comes in from the Cold" says that the sensor probes, housed in 'electronic pebbles,' are buried 60 meters under the surface of the glacier. And they transmit wirelessly their observations about temperature, pressure or ice movement to a base station located on the surface, which relays the readings to a server in the UK by mobile phone. The researchers think that similar sensor webs will soon be deployed around the world to watch what is changing in our environment. You'll find more details and pictures in this overview." -
Big Screen for NYPD
Roland Piquepaille writes "With millions of emergency calls every year, the New York City Police Department (NYPD) decided to invest in a new command and visualization center in order to keep up with the ocean of data it has to deal with. According to this article from BusinessWeek Online, the display system consists of hundreds of Mitsubishi digital light-processing (DLP) monitors covering three walls. The NYPD thinks it will help it to also manage the hundreds of thousands of annual arrest records and to further reduce crime in the city. You'll find more details and references in this overview, which includes impressive pictures of former visualization centers built by Imtech, which will integrate the NYPD one." -
Big Screen for NYPD
Roland Piquepaille writes "With millions of emergency calls every year, the New York City Police Department (NYPD) decided to invest in a new command and visualization center in order to keep up with the ocean of data it has to deal with. According to this article from BusinessWeek Online, the display system consists of hundreds of Mitsubishi digital light-processing (DLP) monitors covering three walls. The NYPD thinks it will help it to also manage the hundreds of thousands of annual arrest records and to further reduce crime in the city. You'll find more details and references in this overview, which includes impressive pictures of former visualization centers built by Imtech, which will integrate the NYPD one." -
Robotic Space Workers of the Future
Roland Piquepaille writes "In an article named "Puckish robots pull together," Nature describes the work done at the Polymorphic Robotics Laboratory (PRL) of the University of Southern California on self-reconfigurable teams of robots. There, Wei-Min Shen and his colleagues simulate the absence of gravity by creating a 2D representation of space by using an 'air-hockey table.' With jets of air flow blowing on the surface, the 30 cm-wide robots, working in pairs, evolve in a frictionless environment, pick elements such as girders to assemble structures like if they were in space. NASA will use these teams of autonomous robots to build space systems like 10 km-long arrays of solar panels and other huge spatial structures. You'll find more details, illustrations and references in this overview." -
Robotic Space Workers of the Future
Roland Piquepaille writes "In an article named "Puckish robots pull together," Nature describes the work done at the Polymorphic Robotics Laboratory (PRL) of the University of Southern California on self-reconfigurable teams of robots. There, Wei-Min Shen and his colleagues simulate the absence of gravity by creating a 2D representation of space by using an 'air-hockey table.' With jets of air flow blowing on the surface, the 30 cm-wide robots, working in pairs, evolve in a frictionless environment, pick elements such as girders to assemble structures like if they were in space. NASA will use these teams of autonomous robots to build space systems like 10 km-long arrays of solar panels and other huge spatial structures. You'll find more details, illustrations and references in this overview." -
Battery Development Off The Beaten Path
Roland Piquepaille writes "Let's face it. Our computing devices are going faster year after year. But our laptop batteries don't show the same performance improvement. They still work only for a few hours, just a little bit more than ten years ago. Several companies want to change this, according to this UPI report, 'Nanotechnology improving energy options.' For example, mPhase Technologies plans to introduce smart batteries based on millions of silicon nanotube electrodes. These nanobatteries, to be introduced before the end of 2005, will last longer than traditional ones and will be respectful of our environment. Meanwhile, Konarka Technologies wants to reduce the weight of batteries with its flexible solar-fueled nanobatteries. You'll find more details and pictures in this overview." -
Battery Development Off The Beaten Path
Roland Piquepaille writes "Let's face it. Our computing devices are going faster year after year. But our laptop batteries don't show the same performance improvement. They still work only for a few hours, just a little bit more than ten years ago. Several companies want to change this, according to this UPI report, 'Nanotechnology improving energy options.' For example, mPhase Technologies plans to introduce smart batteries based on millions of silicon nanotube electrodes. These nanobatteries, to be introduced before the end of 2005, will last longer than traditional ones and will be respectful of our environment. Meanwhile, Konarka Technologies wants to reduce the weight of batteries with its flexible solar-fueled nanobatteries. You'll find more details and pictures in this overview." -
When Robots Play Games
Roland Piquepaille writes "If the theory of evolution has worked well for us -- even if this is arguable these days -- why not apply it to mobile robots?, asks Technology Research News. Several U.S. researchers just did that and trained neural networks to play the Capture the flag game. Once the neural networks were good enough at the game, they transferred them to the robots' onboard computers. These teams of mobile robots, named EvBots (for Evolution Robots), were then also able to play the game successfully. This method could be used to build environment-aware autonomous robots able to clear a minefield or find heat sources in a collapsed building within 3 to 6 years. But the researchers want to build controllers for robots that adapt to completely unknown environments. And this will not happen before 10 or maybe 50 years. You'll find more details and references in this overview, including a picture of EvBots trying to find their way during a game." Read on for a similar robot competition held this weekend in France.saunabad writes "The annual Eurobot autonomous robot contest for amateurs is held this weekend on La Férte-Bernard, France. This year's theme is 'coconut rugby,' and the robots are collecting small stress balls from the field and carrying them to the opponent's end, or shooting them in the rugby goal, while avoiding the randomly placed obstacles at the same time. Each team has a one main robot and an optional small assisting robot."
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When Robots Play Games
Roland Piquepaille writes "If the theory of evolution has worked well for us -- even if this is arguable these days -- why not apply it to mobile robots?, asks Technology Research News. Several U.S. researchers just did that and trained neural networks to play the Capture the flag game. Once the neural networks were good enough at the game, they transferred them to the robots' onboard computers. These teams of mobile robots, named EvBots (for Evolution Robots), were then also able to play the game successfully. This method could be used to build environment-aware autonomous robots able to clear a minefield or find heat sources in a collapsed building within 3 to 6 years. But the researchers want to build controllers for robots that adapt to completely unknown environments. And this will not happen before 10 or maybe 50 years. You'll find more details and references in this overview, including a picture of EvBots trying to find their way during a game." Read on for a similar robot competition held this weekend in France.saunabad writes "The annual Eurobot autonomous robot contest for amateurs is held this weekend on La Férte-Bernard, France. This year's theme is 'coconut rugby,' and the robots are collecting small stress balls from the field and carrying them to the opponent's end, or shooting them in the rugby goal, while avoiding the randomly placed obstacles at the same time. Each team has a one main robot and an optional small assisting robot."
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What To Wear On Mars
Roland Piquepaille writes "If men ever land on Mars, what will they wear to protect them from radiation, micrometeors and the very cold climate? Several students from the University of Alberta tackled the problem and designed space suits for Mars. Their prototype suit is composed of twelve layers of materials, including one made from Demron, a new nanotechnology material developed by a Florida-based company, Radiation Shield Technologies. The students and their professor, Dr. Barry Patchett, think their suit will largely be ready before real missions to Mars start in about twenty years. They also hope that NASA will pick their design. More details and references are available in this overview, including some illustrations." -
What To Wear On Mars
Roland Piquepaille writes "If men ever land on Mars, what will they wear to protect them from radiation, micrometeors and the very cold climate? Several students from the University of Alberta tackled the problem and designed space suits for Mars. Their prototype suit is composed of twelve layers of materials, including one made from Demron, a new nanotechnology material developed by a Florida-based company, Radiation Shield Technologies. The students and their professor, Dr. Barry Patchett, think their suit will largely be ready before real missions to Mars start in about twenty years. They also hope that NASA will pick their design. More details and references are available in this overview, including some illustrations." -
Hubble vs. Webb - How Far Back Will They See?
Roland Piquepaille writes "According to Forbes, reporting in "Peering Back At The Universe's Past," space telescopes are really acting as time machines. They can watch objects which are so far from us that light has taken billions of years before reaching their mirrors. The Hubble telescope is able to look at events that took place 13.3 billion light-years ago. But the James E. Webb space telescope, currently under construction, and scheduled to be launched in 2011, will be able to see even further and catch phenomena which happened 13.5 billion light-years ago. The astronomers think the Webb telescope might even be able to see up to 13.7 billion light-years ago, when our universe was just 200 or 300 million years old. We are used to see fantastic images from Hubble, without paying too much attention to the characteristics of the telescope itself. So here is a thorough comparison between the two space telescopes." -
Hubble vs. Webb - How Far Back Will They See?
Roland Piquepaille writes "According to Forbes, reporting in "Peering Back At The Universe's Past," space telescopes are really acting as time machines. They can watch objects which are so far from us that light has taken billions of years before reaching their mirrors. The Hubble telescope is able to look at events that took place 13.3 billion light-years ago. But the James E. Webb space telescope, currently under construction, and scheduled to be launched in 2011, will be able to see even further and catch phenomena which happened 13.5 billion light-years ago. The astronomers think the Webb telescope might even be able to see up to 13.7 billion light-years ago, when our universe was just 200 or 300 million years old. We are used to see fantastic images from Hubble, without paying too much attention to the characteristics of the telescope itself. So here is a thorough comparison between the two space telescopes." -
DNA Sculpture Constructed with Shopping Carts
Roland Piquepaille writes "The U.K. supermarket chain Somerfield decided last year to celebrate the 50th anniversary of the discovery of DNA in an original way. It commissioned British artist Abigail Fallis to create a sculpture of a DNA double helix made of shopping carts and to display it during the Muscular Dystrophy Campaign of 2004. The sculpture, named DNA DL90, is 31 feet high and weighs more than three tons. It is on display since April 2004 at "Sculpture at Goodwood," the 21st century British sculpture park in Surrey. This photo gallery contains several pictures of this original artwork." -
DNA Sculpture Constructed with Shopping Carts
Roland Piquepaille writes "The U.K. supermarket chain Somerfield decided last year to celebrate the 50th anniversary of the discovery of DNA in an original way. It commissioned British artist Abigail Fallis to create a sculpture of a DNA double helix made of shopping carts and to display it during the Muscular Dystrophy Campaign of 2004. The sculpture, named DNA DL90, is 31 feet high and weighs more than three tons. It is on display since April 2004 at "Sculpture at Goodwood," the 21st century British sculpture park in Surrey. This photo gallery contains several pictures of this original artwork." -
Welcome to the 'Plogging' World
Roland Piquepaille writes "No, it's not a typo. A plog is short for 'project log' like a blog is short for 'web log.' And plogs start to be used as tools to manage projects, especially in the IT world, as discovered Michael Schrage of the MIT. He reports his findings in an article published by CIO Magazine, "The Virtues of Chitchat." Schrage found that if plogs are not really commonplace, they're not exactly rare. And they are even used to manage large IT projects, such as ERP rollouts. I totally agree with him that a plog is of great value to integrate people in a team or to keep track of the advancement of a project. And you, what's your view? If you're a project manager, do you use a plog for better control? And if not today, will you use one in the future? This overview contains selected excerpts from Schage's article which will help you to answer the above questions." -
Welcome to the 'Plogging' World
Roland Piquepaille writes "No, it's not a typo. A plog is short for 'project log' like a blog is short for 'web log.' And plogs start to be used as tools to manage projects, especially in the IT world, as discovered Michael Schrage of the MIT. He reports his findings in an article published by CIO Magazine, "The Virtues of Chitchat." Schrage found that if plogs are not really commonplace, they're not exactly rare. And they are even used to manage large IT projects, such as ERP rollouts. I totally agree with him that a plog is of great value to integrate people in a team or to keep track of the advancement of a project. And you, what's your view? If you're a project manager, do you use a plog for better control? And if not today, will you use one in the future? This overview contains selected excerpts from Schage's article which will help you to answer the above questions." -
Nano Body Building
Roland Piquepaille writes "In this article from Backbone Magazine, Douglas Mulhall, author of 'Our Molecular Future' tells us about the future of nanomedicine. He thinks that medical diagnosis will be the first successful steps, involving nanorobots which will raise alerts when they detect pre-cancerous cells. And twenty years from now, researchers envision that nanomedicine will be a trillion dollar industry. Around 2025, you'll pay $1,000 a year for a nanopill that will extend your life by suppressing heart attacks, diabetes and other diseases. Other scientists say that nanotechnology will be used to build synthetic bone and tissue, an opinion shared by Scientific American, which warns that growing replacement organs is still at least another 10 to 20 years in front of us. More details and references are available in this overview focused on how nanomedicine is going to totally take over healthcare in the 21st century. [Additional note: Slashdot described Mulhall's Law of Disassembly last February.]" -
Nano Body Building
Roland Piquepaille writes "In this article from Backbone Magazine, Douglas Mulhall, author of 'Our Molecular Future' tells us about the future of nanomedicine. He thinks that medical diagnosis will be the first successful steps, involving nanorobots which will raise alerts when they detect pre-cancerous cells. And twenty years from now, researchers envision that nanomedicine will be a trillion dollar industry. Around 2025, you'll pay $1,000 a year for a nanopill that will extend your life by suppressing heart attacks, diabetes and other diseases. Other scientists say that nanotechnology will be used to build synthetic bone and tissue, an opinion shared by Scientific American, which warns that growing replacement organs is still at least another 10 to 20 years in front of us. More details and references are available in this overview focused on how nanomedicine is going to totally take over healthcare in the 21st century. [Additional note: Slashdot described Mulhall's Law of Disassembly last February.]" -
The World's First Origami Folding Robot
Roland Piquepaille writes "Devin Balkcom, a Carnegie Mellon graduate student in robotics, has built the world's first origami-folding robot as the subject of his thesis. Origami, the geometry of paper folding, looks simple when you're a kid. But it's actually quite challenging to design a robot to do it. Movements are quite complex, and paper, because it is flexible, is difficult to be manipulated by a robot. This news release says that the project uses kinematics, the study of mechanisms, to determine how folding is done and how paper can be treated as a flexible and rigid material. You'll find more details and references in this overview, including some frames extracted from videos showing the robot at work." Balkcom's website has movies, information and a couple of academic papers. -
The World's First Origami Folding Robot
Roland Piquepaille writes "Devin Balkcom, a Carnegie Mellon graduate student in robotics, has built the world's first origami-folding robot as the subject of his thesis. Origami, the geometry of paper folding, looks simple when you're a kid. But it's actually quite challenging to design a robot to do it. Movements are quite complex, and paper, because it is flexible, is difficult to be manipulated by a robot. This news release says that the project uses kinematics, the study of mechanisms, to determine how folding is done and how paper can be treated as a flexible and rigid material. You'll find more details and references in this overview, including some frames extracted from videos showing the robot at work." Balkcom's website has movies, information and a couple of academic papers. -
Alan Turing, the Inventor of Software
Roland Piquepaille writes "BusinessWeek celebrates its anniversary with a series of articles about the great thinkers and innovators from the past 75 years. The series stars with a profile of Alan Turing, "Thinking Up Computers." In case you forgot, Turing is the man who created the concept of a "universal machine" which would perform various and diverse actions when given various sets of instructions. In other words, he laid out in the 1920s the foundations of software. You'll find the introduction of Turing's profile, plus more details, photographs and references in this overview." -
Alan Turing, the Inventor of Software
Roland Piquepaille writes "BusinessWeek celebrates its anniversary with a series of articles about the great thinkers and innovators from the past 75 years. The series stars with a profile of Alan Turing, "Thinking Up Computers." In case you forgot, Turing is the man who created the concept of a "universal machine" which would perform various and diverse actions when given various sets of instructions. In other words, he laid out in the 1920s the foundations of software. You'll find the introduction of Turing's profile, plus more details, photographs and references in this overview." -
The Face Detector
Roland Piquepaille writes "Almost all human faces have common characteristics, such as two eyes and one mouth. Still, some people, affected by face blindness, cannot recognize one face from another one. So it's understandable that face recognition is a major challenge for computer vision systems. In "Facing facts in computer recognition,", the Pittsburgh Post-Gazette reports that a team from Carnegie Mellon University's Robotics Institute has developed a very accurate software to find faces within images. By analyzing only 768 pixels, the system can detect 93 percent of the faces in a set of images while falsely identifying four objects as faces. The Face Detector Demo is available online and you can submit an image for analysis and receive the results by e-mail. The technology will be used for security purposes, but also by digital photography companies who want to automatically reduce "red eye" effects. You'll find more details and references in this overview." -
The Face Detector
Roland Piquepaille writes "Almost all human faces have common characteristics, such as two eyes and one mouth. Still, some people, affected by face blindness, cannot recognize one face from another one. So it's understandable that face recognition is a major challenge for computer vision systems. In "Facing facts in computer recognition,", the Pittsburgh Post-Gazette reports that a team from Carnegie Mellon University's Robotics Institute has developed a very accurate software to find faces within images. By analyzing only 768 pixels, the system can detect 93 percent of the faces in a set of images while falsely identifying four objects as faces. The Face Detector Demo is available online and you can submit an image for analysis and receive the results by e-mail. The technology will be used for security purposes, but also by digital photography companies who want to automatically reduce "red eye" effects. You'll find more details and references in this overview." -
FireFox and Longhorn: Meant For Each Other?
News for nerds writes "According to the internetnews.com report, Microsoft's technology evangelist Robert Scoble said in his blog and interview that while he is a user of Firefox it can be improved if Mozilla developers take advantage of Longhorn technologies such as XAML, Avalon and WinFS, instead of making it only within GNOME/Mozilla coalition." -
Programming As If Performance Mattered
Junks Jerzey writes "Saw the essay 'Programming as if Performance Mattered', by James Hague, mentioned at the Lambda the Ultimate programming language weblog. This is the first modern and sensible spin on how optimization has changed over the years. The big 'gotcha' in the middle caught me by surprise. An inspiring read." Hague begins: "Are particular performance problems perennial? Can we never escape them? This essay is an attempt to look at things from a different point of view, to put performance into proper perspective." -
Who's Behind the Shower Curtain?
Roland Piquepaille writes "No, it's not Norman Bates. Instead, hundreds of millions of yellow, pink and white bacteria are hiding on your shower curtain. According to a study by San Diego and Colorado researchers, it should be enough to push you to turn the water off and to make you grab a towel. After analyzing the vinyl shower curtains from their own bathrooms, the scientists found '...about 80 percent of the organisms they found in the flaky scum were in the same genetic families as those known to infect wounds'. Sorry to leave you here, but I also have to go and buy another shower curtain, preferably a disposable one." -
New Quantum Cryptography Speed Record
Roland Piquepaille writes "Physicists from the National Institute of Standards and Technology (NIST) have established a world's speed record for 'unbreakable' encryption with their cryptographic system based on the transmission of single photons. With this kind of method, messages cannot be intercepted without detection, meaning transmission is always safe. The NIST 'quantum key distribution' (QKD) system was used between two buildings located 730 meters apart for transmitting a stream of photons at a rate of 1 million bits per second. While it might not look very fast, its 100 times faster than with previous quantum distribution systems. This overview contains more details and references about information theory." -
New Quantum Cryptography Speed Record
Roland Piquepaille writes "Physicists from the National Institute of Standards and Technology (NIST) have established a world's speed record for 'unbreakable' encryption with their cryptographic system based on the transmission of single photons. With this kind of method, messages cannot be intercepted without detection, meaning transmission is always safe. The NIST 'quantum key distribution' (QKD) system was used between two buildings located 730 meters apart for transmitting a stream of photons at a rate of 1 million bits per second. While it might not look very fast, its 100 times faster than with previous quantum distribution systems. This overview contains more details and references about information theory." -
Morphing Plane Wings for Efficient Flights
Roland Piquepaille writes "Airplanes, whether manned or unmanned, need to travel at various speeds. For example, a surveillance plane needs to fly fast to reach its destination point. Then, it needs to reduce its speed to achieve its surveillance mission. But with its fixed wings, it doesn't offer the same level of efficiency during these two phases. That's why Penn State engineers have devised airplane wings that change shape like a bird and have scales like a fish. Right now, the team has only built a tabletop model. So it will be a long time before you catch a plane and watch the wings disappear by looking through the window. This overview contains more details and references, including a couple of images describing the work done so far." -
Morphing Plane Wings for Efficient Flights
Roland Piquepaille writes "Airplanes, whether manned or unmanned, need to travel at various speeds. For example, a surveillance plane needs to fly fast to reach its destination point. Then, it needs to reduce its speed to achieve its surveillance mission. But with its fixed wings, it doesn't offer the same level of efficiency during these two phases. That's why Penn State engineers have devised airplane wings that change shape like a bird and have scales like a fish. Right now, the team has only built a tabletop model. So it will be a long time before you catch a plane and watch the wings disappear by looking through the window. This overview contains more details and references, including a couple of images describing the work done so far." -
Towards Silent Supersonic Planes
Roland Piquepaille writes "There is no longer a single commercial supersonic airplane since the retirement of the Concorde last year. And even during its years of glory, the Concorde was not a commercial success, mainly because it was not allowed to cruise at supersonic speed over land. Why? Because of the sonic 'boom' which arises when you break the sound barrier. Now, a joint program between NASA, the military and the aerospace industry wants to remove, or at least reduce, this sonic boom, by changing the shape of supersonic planes. It seems to work. After a 'nose job' on a Northrop Grumman F-5E, about a third of the pressure released when breaking the sound barrier has already been suppressed. This overview contains more details. It also includes a photograph of the modified Northrop Grumman F-5Ea aircraft flying off the wing of the F-15B research testbed aircraft. [Note: Previous results were reported here by Slashdot in last September.]" -
Towards Silent Supersonic Planes
Roland Piquepaille writes "There is no longer a single commercial supersonic airplane since the retirement of the Concorde last year. And even during its years of glory, the Concorde was not a commercial success, mainly because it was not allowed to cruise at supersonic speed over land. Why? Because of the sonic 'boom' which arises when you break the sound barrier. Now, a joint program between NASA, the military and the aerospace industry wants to remove, or at least reduce, this sonic boom, by changing the shape of supersonic planes. It seems to work. After a 'nose job' on a Northrop Grumman F-5E, about a third of the pressure released when breaking the sound barrier has already been suppressed. This overview contains more details. It also includes a photograph of the modified Northrop Grumman F-5Ea aircraft flying off the wing of the F-15B research testbed aircraft. [Note: Previous results were reported here by Slashdot in last September.]" -
Satellites Show That Earth Has a Fever
Roland Piquepaille writes "A recent study from NASA says that satellites are acting as thermometers in space. Contrary to meteorological ground stations which measure the air temperature around two meters above the ground, satellites can accurately measure the temperature of the Earth's skin. And this new study, which covers the 18-year period going from 1981 to 1998, shows that the Earth's temperature is rising 0.43C per decade instead of the O.34C found by previous methods. Unfortunately for us, if satellites can more precisely measure this rise of the Earth's temperature, they cannot cure this fever. This overview contains more details and a spectacular image showing the European heat wave of the summer of 2003." -
Satellites Show That Earth Has a Fever
Roland Piquepaille writes "A recent study from NASA says that satellites are acting as thermometers in space. Contrary to meteorological ground stations which measure the air temperature around two meters above the ground, satellites can accurately measure the temperature of the Earth's skin. And this new study, which covers the 18-year period going from 1981 to 1998, shows that the Earth's temperature is rising 0.43C per decade instead of the O.34C found by previous methods. Unfortunately for us, if satellites can more precisely measure this rise of the Earth's temperature, they cannot cure this fever. This overview contains more details and a spectacular image showing the European heat wave of the summer of 2003." -
This Robot Collects Fingerprints
Roland Piquepaille writes "When police officers found suspicious packages today in an airport or a train station, they destroyed them immediately, along with potential fingerprints on them. A new robotic device, dubbed RAFFE (short for "Robot Accessory for Fuming Fingerprint Evidence), developed by scientists from the University of Toronto (U of T) and the University of Calgary, offers a solution to this problem. Mounted on an ordinary robot, it will reveal fingerprints by releasing Super Glue on the object. Then it will take pictures of these fingerprints. The Calgary Police Service is already using RAFFE for field tests. This overview contains more details and extra references." -
This Robot Collects Fingerprints
Roland Piquepaille writes "When police officers found suspicious packages today in an airport or a train station, they destroyed them immediately, along with potential fingerprints on them. A new robotic device, dubbed RAFFE (short for "Robot Accessory for Fuming Fingerprint Evidence), developed by scientists from the University of Toronto (U of T) and the University of Calgary, offers a solution to this problem. Mounted on an ordinary robot, it will reveal fingerprints by releasing Super Glue on the object. Then it will take pictures of these fingerprints. The Calgary Police Service is already using RAFFE for field tests. This overview contains more details and extra references." -
From the Higgs Boson Particle to Leadbelly
Roland Piquepaille writes "Physicists from the Lawrence Berkeley National Laboratory are using the same methods to search for the elusive Higgs Boson particle and to digitally restore audio recordings from the past. Berkeley Lab signed an agreement with the Library of Congress to digitize the many thousands of early blues or jazz recordings it has in its archives. And the results are spectacular. Compare for example, these two versions of "Good Bye Irene", before and after being optically reconstructed (WAV format, 18 and 19 seconds). This news release describes the method used by the physicists. This overview contains other details and extra references about this project." We also covered finding Higgs Boson recently as well. -
From the Higgs Boson Particle to Leadbelly
Roland Piquepaille writes "Physicists from the Lawrence Berkeley National Laboratory are using the same methods to search for the elusive Higgs Boson particle and to digitally restore audio recordings from the past. Berkeley Lab signed an agreement with the Library of Congress to digitize the many thousands of early blues or jazz recordings it has in its archives. And the results are spectacular. Compare for example, these two versions of "Good Bye Irene", before and after being optically reconstructed (WAV format, 18 and 19 seconds). This news release describes the method used by the physicists. This overview contains other details and extra references about this project." We also covered finding Higgs Boson recently as well. -
SimChurch
Roland Piquepaille writes "It's Sunday and some of you might go to a church. But starting on May 11, and for a duration of three months, you'll be able to go to a virtual church. Only the building, with its altar and pews, will be virtual. The preacher, congregation and prayers will be real, according to this BBC News article, 'Glimpse inside the virtual church.' This experiment is launched by a Christian website, Ship of Fools, and will be named Church of Fools. Even with such a foolish name, the virtual church project has been approved by the church hierarchy. This overview contains other details and references about the Church of Fools project." -
SimChurch
Roland Piquepaille writes "It's Sunday and some of you might go to a church. But starting on May 11, and for a duration of three months, you'll be able to go to a virtual church. Only the building, with its altar and pews, will be virtual. The preacher, congregation and prayers will be real, according to this BBC News article, 'Glimpse inside the virtual church.' This experiment is launched by a Christian website, Ship of Fools, and will be named Church of Fools. Even with such a foolish name, the virtual church project has been approved by the church hierarchy. This overview contains other details and references about the Church of Fools project."