The number of doctorates awarded in science and engineering (S&E) fields has risen for the fourth consecutive year, according to the National Science Foundation. Last year the United States produced 29,854 doctorate degrees in S&E fields, an increase of nearly 7 percent from the previous year. Computer science doctorates led the way with a 28 percent increase to 1,452 degrees, following a double-digit increase in CS doctorates from the previous year. CS doctorates are up 79 percent since 2002 and now represent a considerable share of not only S&E doctorates but all doctorate degrees. Non-U.S. citizens have been key to the growth in CS doctorate degree production. In the mid-to-late 1990s permanent or temporary visa holders received about half of CS doctorates, but last year they accounted for 61 percent. CS doctorates to U.S. citizens rose 42 percent from 2002 to 2006, but jumped 115 percent for non-U.S. citizens over the same period.
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Rensselaer Polytechnic Institute’s “Adaptive Use Musical Instruments for the Physically Challenged” program enables students with severe physical disabilities to make music by just moving their heads. The system uses a digital video camera to track a student’s head movements on a computer screen and then translates the movements into piano scales or drum beats. Zane Van Dusen, a RPI undergraduate student in computer science and electronic media arts and communication, developed the idea of using a digital video camera to track the user’s head. A cursor is digitally placed on a portion of the student’s head, usually the tip of the nose, to follow the user’s movements. As the cursor moves, sounds are created based on the user’s movements. Moving the head completely in one direction will create a scale climb on the piano or a quick series of drum beats or a drum roll. The project’s ultimate goal is to eventually enable students to compose their own pieces to help students learn the creative process and build communication skills. “The client or patient doesn’t have to be a musician to participate,” says the American Musical Therapy Association’s Al Bumanis. “The goal is not usually a performance, it’s increasing communication skills, understanding, relearning lost skills.”
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ACM has named computer science pioneer Charles P. Thacker the recipient of the 2009 A.M. Turing Award for his many contributions, which includes the Alto, a machine developed more than 30 years ago at Xerox’s Palo Alto Research Center (PARC) that is often credited as the world’s first personal computer. Thacker says the inspiration for the Alto came from PARC manager Bob Taylor’s vision of computers as machines capable of transforming documents and other communications media. He says innovations such as dynamic random access memory chips enabled the PARC team to outfit the Alto with bit-mapped computer displays. ACM also cites Thacker’s contributions to the invention of Ethernet and his work on tablet-style computers since becoming a researcher at Microsoft in the 1990s. Thacker “is a real genius,” says former PARC researcher and fellow A.M. Turing Award winner Alan Kay. “We don’t like to sling that word around in our field, but he is one. He is magic.”
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European researchers from the Milepost project used machine-language technology to develop a method for automatically optimizing software compilers for re-configurable embedded processors. The technology can learn how to get the best performance from the hardware, which enables the software to run faster and use less energy. The system learns to predict the optimal compiler solution for any program by analyzing the execution time of different compiler options. “If you can run things faster and more energy efficiently, you may be able to choose a different piece of hardware than before–perhaps a cheaper option for the same performance,” says University of Edinburgh professor and Milepost project coordinator Michael O’Boyle. The Milepost team also launched a code-tuning Web site. Developers can upload their software code to the site and receive input on how to manipulate their code so it works faster. “We can use machine-learning technologies to look at multicore and heterogeneous platforms and we will be looking at dynamic online adaptation,” O’Boyle says.
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Tokyo University researchers have created Kojiro, a humanoid robot that is learning to mimic how people walk. Kojiro has a skeletal structure similar to that of humans, which allows it to move in a more natural way, as it can bend and twist by bending and twisting using its artificial spine. The spine’s design will enable scientists to develop lighter and more flexible robots in the future, says Tokyo professor and Kojiro researcher Yuto Nakanishi. Kojiro uses lightweight motors to pull cables attached to specific locations on the body, which simulates how muscles and tendons contract and relax when people move. Kojiro has 60 degrees of free movement using a system of about 100 cable-tendons. Sensors are used to keep track of Kojiro’s various positions, and an accelerometer and two gyroscopes help the robot maintain balance. The researchers say more work is needed on the algorithms that control the robot’s movements to enable it to handle complex actions.
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Microsoft researchers have developed Sensecam, a system for creating digital archives of a person’s experiences that could help people suffering from memory disorders. Sensecam features a small black box containing a digital camera and an accelerometer to measure movement. Carnegie Mellon University (CMU) researchers had one subject go on three excursions with a Sensecam, a voice recorder, and a global positioning system (GPS) unit. The researchers found that the best way to help the subject remember the experiences was to focus on a few key images that might unlock the memories related to it. For a location-based experience, Sensecam uses data provided by the GPS and the accelerometer to determine which images might be the most salient. “The design is intended to give the patient the ability to engage actively with the experience instead of simply flipping through some pictures,” says CMU’s Matthew Lee. At Dublin City University, Alan Smeaton compares Sensecam images to categorize them by activity. At the University of Toronto, Ronald Baecker is studying the usefulness of complementing Sensecam images with an audio narrative created by a loved one.
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Academics and software engineers from the universities of Edinburgh, Manchester, and Southampton have established the Software Sustainability Institute (SSI), which will partner with about 30 to 40 research communities across the United Kingdom to develop ways to keep their software current and to help them develop it to meet new requirements. SSI will optimize strategies for sustaining software and provide communities with best practices for improving it for future users. “The issue at the moment is that there are no coordinated ways of sustaining important research software once it comes to the end of its funding,” says SSI director Neil Chue Hong. “The creation of the SSI will ensure that important software is sustained so that it can continue to contribute towards high quality research.”
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Flying pixels have the potential to offer a more immersive three-dimensional (3D) viewing experience than 3D television sets, according to engineers at the Massachusetts Institute of Technology (MIT). The engineers describe their unique 3D display, called Flyfire, as a flock of tiny aircraft carrying multicolored light-emitting diodes (LEDs). The pixels can hover in front of a viewer and form an image, but they also can change their position to add greater depth to the image. “It’s a 3D display with a dual aspect–it can show an image like a traditional display, but then those pixels can move and transform into another shape,” says MIT’s E. Roon Kang. The initial proof-of-principle experiments used quad-rotor helicopters more than 10 centimeters across, and the precise control of their altitude was within three centimeters. Kang says it could take at least five years to make a display with 1,000 or more of the small flying pixels. MIT’s Emilio Frazzoli says onboard controls and a central control system also will be needed to coordinate pixel movement.
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Nagoya University researchers have developed a light-activated switch to turn nanomachines on and off. The team used tiny triggered tweezers made of DNA to open and close in response to ultraviolet (UV) and visible light. “We are designing DNA nano-robotics that are mechanically operated by light rather than chemical fuel,” says Nagoya researcher Hiroyuki Asanuma. The researchers focused on a loop of DNA that looks like a hairpin with two arms. At the end of each arm, azobenzene groups are integrated into the DNA sequence. Under visible light, the azobenzene groups adopt the trans isomer, allowing the base pairs to join together. When UV light is applied, the azobenzene groups switch to the more sterically-constrained cis isomer. The system is fully reversible, allowing it to have great potential to be applied to other nanotechnologies that use DNA. “To be able to switch biomolecular conformational changes is of considerable interest for many applications in biomedicine and bionanotechnology,” says Technical University of Munich’s Friedrich Simmel.
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Microsoft Live Labs researchers have developed Pivot, a tool designed to visually organize large data sets. Pivot presents data in the form of several images accompanied by textual data. Users can zoom into the images to study individual pieces of data, or zoom out to see items grouped according to certain criteria. Data collections can contain a few images with static data attached, or they can be large and connected to a feed of changing data. Pivot is based on Microsoft’s Seadragon, software designed for manipulating large amounts of visual information. Users can make their own collections of data by converting images to the Deep Zoom format used by Seadragon, and annotate them using a format based on extensible markup language. Pivot also could provide a better way to sort through Internet search results, because users could sort through thousands of results visually, instead of just looking a list of the top 10 search results.
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