dimanche 29 décembre 2013
dimanche 22 décembre 2013
mercredi 11 décembre 2013
lundi 9 décembre 2013
samedi 7 décembre 2013
Google this week released version 1.2 of its Go open source programming language, which the company initially released four years ago as an alternative to C. Go was designed to improve on certain aspects of languages similar to C by leveraging multicore processors and offering modern language features such as dynamic typing. Furthermore, Go compiles rapidly with high performance. Google notes that "no major systems language has emerged in over a decade, but over that time the computing landscape has changed tremendously." Despite Go's reported benefits, its potential popularity among developers remains uncertain. Since Go's initial release in 2009, the language has not caught on significantly outside of Google enclaves. As with all new programming languages, Go faces the challenges of developers questioning language mutability, the risk involved in committing to something new, and the company's commitment to the project. Companies that have used Go in high-profile production contexts offer favorable feedback. Iron.io, for example, used Go to consolidate about 30 servers down to two, while Bitly and Braintree Payment Solutions also were impressed with what they accomplished using Go.
mercredi 10 juillet 2013
A partnership between the European Union and Japan could lead to the creation of more efficient networks that can handle vast amounts of data. Researchers will undertake projects in areas that include cybersecurity, network capacity, storage, high-density data traffic, and energy efficiency. The Strauss project will focus on developing network technologies that offer speeds of 100 Gbps, which is about 5,000 times faster than the average European broadband speed of about 20 Mbps. Currently, 1.7 million billion bytes of data are sent per minute, but traffic volumes are expected to grow 12-fold by 2018, according to the European Commission. Researchers will design an advanced optical Ethernet transport architecture that leverages software-defined networking principles, optical network visualization, and flexible optical circuit and packet-switching technologies beyond 100 Gbps. "Our future Internet should know no barriers, least of all barriers created because we did not prepare for the data revolution," says the EC's Neelie Kroes.
jeudi 4 juillet 2013
Lehigh University professor Hector Munoz-Avila has won a three-year U.S. National Science Foundation grant to develop autonomous agents that dynamically identify and select their own goals. Computing devices and software programs already use algorithms to make intelligent decisions, notes Munoz-Avila, who focuses on the incipient field of goal-driven autonomy (GDA) technology. In the near future, Munoz-Avila believes that algorithm-powered agents will analyze complex problems, establish the most effective intermediate goals, and take steps toward long-term solutions. During this process, agents will adjust to unexpected situations and learn from their mistakes without human intervention. "For a long time, scientists have told agents which goals to achieve," Munoz-Avila says. "What we want to do now is to develop agents that autonomously select their own goals and accomplish them." GDA agents could have useful applications in areas such as military planning, robotics, security, and electrical grid control systems. Munoz-Avila's project will focus on enabling GDA agents to acquire more knowledge of their domains and to generalize their success in other applications. He says the importance of GDA agents having the ability to diagnose environmental discrepancies and act intelligently is growing as autonomous computing devices and software proliferate in today's society.
dimanche 19 mai 2013
samedi 11 mai 2013
Intel will continue to keep pace with Moore's Law for now, but as chips continue to shrink, maintaining the pace of progress is growing more difficult, says Intel's William Holt. Intel has used Moore's Law as a baseline for decades to increase transistors and make chips smaller and more cost-effective, resulting in faster and more efficient computers. "Are we closer to an end than we were five years ago? Of course," Holt says. "But are we to the point where we can realistically predict that end, we don't think so." He notes that manufacturing is more complicated with smaller chips, which are subject to a wider class of defects as sensitivities and minor variations increase, requiring extreme attention to detail. "As we make things smaller, the effort that it takes to make them actually work is increasingly difficult," Holt says. However, he says Intel has discovered new tools and innovations to make new generations of chips possible. Meanwhile, other companies, such as IBM, are researching ways of extending Moore's Law, and the U.S. National Science Foundation is funding a research effort called Science and Engineering Beyond Moore's Law, which focuses on manufacturing, nanotechnology, multicore chips, and emerging technologies.
Une récente étude du cabinet d'analyse GlobalWebIndex a montré que Google+ était plutôt en forme depuis quelques mois et que le nombre de comptes actifs atteint déjà 360 millions d'utilisateurs. Des chiffres à mettre en perspective par rapport à deux gros concurrents, Twitter et ses 297 millions de comptes actifs et Facebook avec ses 701 millions d'utilisateurs actifs, sur plus d'1,1 milliard de comptes. On entend par compte actif, un compte sur lequel il est constaté au moins une interaction dans le mois.
Un point qui mettrait Google en avantage statistique, puisque lorsque l'on ne va pas tweeter pendant un mois, on n'utilise pas Twitter. En revanche, lorsque l'on ne va pas sur Google +, on utilise peut-être YouTube, le Play Store, Maps, etc. qui crée des interactions avec le compte Google+, comptabilisée en tant que telles.
vendredi 15 mars 2013
mardi 12 février 2013
mercredi 30 janvier 2013
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dimanche 27 janvier 2013
samedi 26 janvier 2013
From ACM TechNews:
MIT Scientists Achieve Molecular Data Storage Breakthrough
TPM Idea Lab
(01/23/13) Carl Franzen
Massachusetts Institute of Technology (MIT) researchers have developed a method for storing data on individual molecules at room temperature, which could lead to a 1,000-fold improvement in storage density. The method was demonstrated on a type of "supramolecule," which was created by binding graphene molecules to zinc atoms. "Each molecule is around one nanometer in dimension and hence this will let us achieve storage as high as 1,000 terabytes per square inch," says MIT's Jagadeesh Moodera. The researchers were able to get the molecules to store binary data by placing them between two electrodes, which were used to change the conductivity of the molecules between two states, representing the 1 and 0 of binary code. “The idea here is to be able to have more and more information available in your portable pocket device,” says MIT's Karthik Raman. “Hence if such a work can make it to technology, with the existing size of our portable device we can store 1,000 times more information in the form of documents or music or high quality video files.” The researchers believe their work could eventually lead to quantum computing and quantum bit memory.
lundi 21 janvier 2013
Facebook hardware guru Frank Frankovsky is developing a blueprint for a new type of computer server that enables the user to add or remove the processor. "By modularizing the design, you can rip and place the bits that need to be upgraded, but you can leave the stuff that's still good," Frankovsky says. The server design is part of the Open Compute Project, which aims to significantly reduce the cost and the hassle of maintaining and upgrading computer servers. "[The Open Compute Project] is about empowering the user to take control of infrastructure design," Frankovsky says. The modular processor specification is an extension of earlier hardware design open sourced by Facebook. The common slot used by Intel and AMD processor sockets is based on the PCIe connector used in existing servers. "We want to better match how the software is going to exercise the hardware," Frankovsky says. Facebook also has open sourced two other server designs. One is the latest version of the Facebook Web server, and the other is the company's first custom-built database server. Both systems are designed to reduce costs by stripping the hardware to the bare essentials, not using a hard drive, and running entirely on flash memory.
lundi 14 janvier 2013
"New research from MIT suggests that entrepreneurs innovate better than managers not because they try more often but rather because when they do try they apply more of their available brainpower to the task. 'We found, somewhat surprisingly, that managers and entrepreneurs did not differ in the probability with which they would undertake explorative (potentially innovative) courses of action. But when entrepreneurs did select explorative tasks, they used both the left and right sides of the frontal cortex of their brain whereas managers only used their left parts of the frontal cortex,' says the lead researcher, MIT Sloan School of Management Visiting Prof. Maurizio Zollo. This is an important difference, he notes, 'because the right side of the frontal cortex is associated with creative thinking, involving to a larger extent emotional processes, whereas the left side is associated with rational decision-making and logic.'"
samedi 12 janvier 2013
Harvard University researcher Walter Scheirer has developed a smartphone-based machine-vision system that automatically recognizes and counts specific animals. Scheirer says the system could help biologists make quicker, more accurate judgments about the health of fragile ecosystems. Although automated camera traps are already in use, they are not selective enough. "Right now, we have to manually go through every photo to identify species and separate photos of interest from false photos," says Princeton researcher Siva Sundaresan. The system starts by scanning the environment for objects that could be the animals it is looking for. It looks for pixel clumps that are new to the scene, then studies them to determine whether they represent any of the animals it has been trained to recognize. The algorithms analyze the content of each frame and look for patterns of pixels that identify the animal. Testing has shown the system can distinguish between three different species of ground squirrel 78 percent of the time. Scheirer says the goal is to develop an inexpensive, easy-to-use system that can automatically detect animals in any environment.