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- Trajectory-Based Forwarding Mechanisms for Ad-Hoc Sensor Networks
- Routing in ad-hoc sensor networks is a complicated task because of many reasons. The nodes are low powered and they cannot maintain routing tables large enough for well-known routing protocols. Because of that, greedy forwarding at intermediate nodes is desirable in ad-hoc networks. Also, for traffic engineering, multipath capabilities are...
- Tags: Trajectory, Network, Rensselaer Polytechnic Institute, Sensor, Productivity, Networking
- White papers 2009-01-01
- QoS Provisioning and Radio Resource Allocation in OFDMA Based WiMAX Systems
- Broadband Wireless Access based on the IEEE 802.16 suite of standards is quickly gaining importance as the basis for 4G technology, with the capability of providing high data rate QoS provisioned services for static as well as highly mobile users. Amongst the different PHY layers in the specification, Orthogonal Frequency...
- Tags: QoS, Rensselaer Polytechnic Institute, Radio, Allocation, OFDMA, WiMAX, Wireless And Mobility
- White papers 2009-01-01
- Is the LED revolution coming?
- According to two professors at Rensselaer Polytechnic Institute RPI, light-emitting diodes LEDs and smart lighting could save trillions of dollars worldwide in the next ten years. They claim that innovations in photonics and solid state lighting could also lead to 'a massive reduction in the amount of energy required to...
- Tags: Rensselaer Polytechnic Institute, Light-emitting Diode, Engineering, Roland Piquepaille
- Blog posts 2008-12-22
- Liquid camera lenses controlled by sound
- Researchers at Rensselaer Polytechnic Institute RPI have created an adaptive liquid lens that captures 250 pictures per second. Because these lenses are simply powered by water and sound, they need less energy to operate than competing technologies. According to the project leader, 'The lens is easy to manipulate, with very...
- Tags: Rensselaer Polytechnic Institute, Droplet, Lens, Camera, Roland Piquepaille
- Blog posts 2008-09-30
- Nanotechnology coming soon to IMAX
- This winter, nanotechnology will be coming to an IMAX theater near you. A 40-minute movie, 'Molecules to the MAX,' will start its career on giant screens. This movie has very peculiar characteristics. First, it has been produced at the Rensselaer Polytechnic Institute RPI by the director of the university's nanotechnology...
- Tags: Rensselaer Polytechnic Institute, Movie, Nanotechnology, Molecule, IMAX, MAX, Roland Piquepaille
- Blog posts 2008-09-11
- A Principle of a Data Synthesizer for Performance Test of Anti-DDOS Flood Attacks
- Distributed Denial-Of-Service DDOS flood attacks remain a big issue in network security. Real events of DDOS flood attacks show that an attacked site (e.g., server) usually may not be overwhelmed immediately at the moment attack packets arrive at that site but sometime late. Therefore, a site has a performance to...
- Tags: Performance, Rensselaer Polytechnic Institute, Distributed Denial Of Service, Attack, Performance Management, Security, Human Resources, Workforce Management
- White papers 2008-03-17
- Toward Aligning Computer Programming With Clear Thinking Via the Reason Programming Language
- Logic has long set itself the task of helping humans think clearly. Certain computer programming languages, most prominently the Logo language, have been billed as helping young people become clearer thinkers. It is somewhat doubtful that such languages can succeed in this regard, but at any rate it seems sensible...
- Tags: Rensselaer Polytechnic Institute, Programming Language, Clear, Programming, Computer, Programming Languages, Development Tools, Software Development, Software/Web Development
- White papers 2007-11-02
- Network-Based Intrusion Detection Using Neural Networks
- With the growth of computer networking, electronic commerce, and web services, security of networking systems has become very important. Many companies now rely on web services as a major source of revenue. Computer hacking poses significant problems to these companies, as distributed attacks can render their cyber-storefront inoperable for long...
- Tags: Network, Rensselaer Polytechnic Institute, Neural Network, Intrusion Detection, Networking, Security
- White papers 2007-09-05
- Tability of Load Balancing Algorithms in Dynamic Adversarial Systems
- In a distributed network of computing hosts, the performance of the system can depend crucially on dividing up work effectively across the participating nodes. This type of load balancing problem has been studied in many different models, centered around the idea that an algorithm should avoid creating "Hot spots" that...
- Tags: Algorithm, Load Balancing, Rensselaer Polytechnic Institute, Distributed Network, Network Technology, Networking
- White papers 2007-05-28
- The world's most anti-reflective coating
- Researchers from the Rensselaer Polytechnic Institute RPI have created a material that reflects virtually no light -- or absorbs it like a black hole. Theyve built this new material by stacking layers of silica nanorods. And they reached a refractive index of 1.05. This can be compared with 1.0 for...
- Tags: Computers &, Internet, Engineering &, Innovation, Nanotechnology, Science &, Nature
- Blog posts 2007-03-02
- The birth of quantum biology
- Just when you finally have grasped the concept of quantum mechanics, its time to wake up and to see the arrival of a nascent field named quantum biology. This is the scientific study of biological processes in terms of quantum mechanics and it uses todays high-performance computers to precisely model...
- Tags: Nanotechnology, Science &, Nature, Rensselaer Polytechnic Institute, protein
- Blog posts 2007-01-18
- The best of two nanoworlds
- As you probably know by now, carbon nanotubes show amazing mechanical strength, while metal nanowires show very interesting optical and electrical properties. Combining both has proved to be a challenge. But if it was possible, this would open the way to the use of carbon nanotubes in computer chips, displays...
- Tags: Nanotechnology, Computers &, Internet, Wireless &, Telecom, Science &, Nature, Engineering &, Innovation, carbon nanotube, nanotube
- Blog posts 2007-01-15
- Large-Scale TCP Models Using Optimistic Parallel Simulation
- Internet data traffic is doubling each year, yet bandwidth does not appear to be growing as fast as expected and thus short falls in available bandwidth, particularly at the "Last mile" may result. To address these bandwidth allocation and congestion problems, researchers are proposing new overlay networks that provide a...
- Tags: Bandwidth, Network, Rensselaer Polytechnic Institute, High-performance, TCP, Internet Data Traffic, Tcp/Ip, Internet, BGP, Leadership, Networking, Management
- White papers 2007-01-01
- Capacity Deficit in Mobile Wireless Ad Hoc Networks Due to Geographic Routing Overheads
- Overheads incurred by routing protocols diminish the capacity available for relaying useful data over a mobile wireless ad hoc network. Discovering and understanding the lower bounds on the amount of protocol overhead incurred for routing data packets is important for development of efficient routing protocols, and for understanding the actual...
- Tags: Mobile, Network, Rensselaer Polytechnic Institute, Routing Protocol, Advertising & Promotion, Networking, Marketing
- White papers 2006-12-03
- Using the Sun for cooling
- Researchers at the Rensselaer Polytechnic Institute RPI have worked during 4 years on a climate control system called the Active Building Envelope ABE system. The ABE includes solar panels, solid-state, thermoelectric heat pumps and a storage device to provide energy on rainy days. And with a grant from the National...
- Tags: Active Building Envelope
- Blog posts 2006-07-12
- Ethnomathematics in the classroom
- Back in 1999, a science professor at Rensselaer Polytechnic Institute discovered that fractal geometry was apparent in the designs of many cultures in Africa. Since then, he developed Web tools focused on ethnomathematics -- the interaction of mathematics and culture. These tools cover a broad range of subjects, from the...
- Tags: Rensselaer Polytechnic Institute, Ron Eglash, tool
- Blog posts 2006-06-26
- A Formal Method for Attack Modeling and Detection
- This paper presents a formal methodology for attack modeling and detection for networks. The approach has three phases. First, the authors extend the basic attack tree approach to capture the temporal dependencies between components, and the expiration of an attack. Second, using the Enhanced Attack Trees EAT the authors build...
- Tags: Rensselaer Polytechnic Institute, Tree, Modeling, Attack, Research & Development, Business Operations
- White papers 2006-01-09
- Queuing Network Models for Delay Analysis of Multihop Wireless Ad Hoc Networks
- This paper focuses on characterizing the average end-to-end delay and maximum achievable per-node throughput in random access multihop wireless ad hoc networks with stationary nodes. It presents an analytical model that takes into account the number of nodes, the random packet arrival process, the extent of locality of traffic, and...
- Tags: Network, Rensselaer Polytechnic Institute, Analysis, Networking, Wi-Fi, Wireless
- White papers 2005-12-15
- Better terrain maps of Earth... and beyond
- The Defense Advanced Research Projects Agency DARPA thinks that today's computer maps of the Earth are inaccurate for its needs. So it recently awarded a grant to a Rensselaer Polytechnic Institute RPI researcher to develop better computer terrain maps of the surface of Earth and even our moon or Mars....
- Tags: Franklin, terrain
- Blog posts 2005-11-05
- Queuing Delay and Achievable Throughput in Random Access Wireless Ad Hoc Networks
- This paper focuses on characterizing the average end-to-end delay and maximum achievable per-node throughput in random access multihop wireless ad hoc networks with stationary nodes. The paper presents an analytical model that takes into account the number of nodes, the random packet arrival process, the extent of locality of traffic,...
- Tags: Throughput, Microsoft Access, Network, Rensselaer Polytechnic Institute, Node, Networking, Wi-Fi, Wireless
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