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- Chaff: Engineering an Efficient SAT Solver
- The study discussed in this paper has culminated in the development of several SAT packages, both proprietary and in the public domain (e.g. GRASP, SATO) which find significant use in both research and industry. Most existing complete solvers are variants of the Davis-Putnam DP search algorithm. This paper describes the...
- Tags: Princeton University, Engineering, Performance Management, Strategy, Human Resources, Workforce Management, Management
- White papers
- Data Domain Case Study: Department of Computer Science, Princeton University
- Princeton University is one of the leading research universities and undergraduate colleges in the world. The Department of Computer Science, Princeton University needed to backup critical research data, faculty and student home directories, presentations and email. In 2005, limited space and difficulties restoring with its tape-based backup system prevented it...
- Tags: Princeton University, Computer Science, Computer, Backups
- Case studies
- A Security Infrastructure for Distributed Java Applications
- This paper describes the design and implementation of a security infrastructure for a distributed Java application. This work is inspired by SDSI/SPKI, but has a few twists of its own. The paper defines a logic for access control, such that access is granted if a proof that it should be...
- Tags: Java Application, Security, Princeton University, Access Control, Programming Languages, Java, Middleware, Software Development, Software/Web Development, Enterprise Software, Software
- White papers
- UFO: A Resilient Layered Routing Architecture
- Conventional wisdom has held that routing protocols cannot achieve both scalability and high availability. Despite scaling rather well, today's Internet routing system does not react quickly to changing network conditions. Overlay networks, on the other hand, can respond quickly to changing network conditions, but their reliance on aggressive probing does...
- Tags: Network Condition, Princeton University, Network, Layered Technologies Inc., UFO, Networking, Routers & Switches
- White papers 2008-01-01
- Link-State Routing With Hop-by-Hop Forwarding Can Achieve Optimal Traffic Engineering
- Link-state routing with hop-by-hop forwarding is widely used in the Internet today. The current versions of these protocols, like OSPF, split traffic evenly over shortest paths based on link weights. However, optimizing the link weights for OSPF to the offered traffic is an NP-hard problem, and even the best setting...
- Tags: Princeton University, Traffic, Open Shortest Path First
- White papers 2007-07-19
- Revisiting Ethernet: Plug-and-Play Made Scalable and Efficient
- Because Ethernet bridging does not scale, most enterprise networks consist of small Ethernet-based subnets interconnected by IP routers. Although Ethernet's flat addressing and transparent bridging allow each subnet to run with minimal configuration, interconnecting subnets at the IP level introduces significant management overhead that increases with the size of the...
- Tags: Princeton University, Network, Subnet, Flat, Ethernet, Network Technology, Networking
- White papers 2007-05-11
- Chip Multi-Processor Scalability for Single-Threaded Applications
- The exponential increase in uniprocessor performance has begun to slow. Designers have been unable to scale performance while managing thermal, power, and electrical effects. Furthermore, design complexity limits the size of monolithic processors that can be designed while keeping costs reasonable. Industry has responded by moving toward Chip Multi-Processor architectures...
- Tags: Princeton University, Performance, Chip, Performance Management, Processors, Human Resources, Workforce Management, Semiconductors, Hardware, Components
- White papers 2005-10-20
- Combining Flexibility and Scalability in a Peer-to-Peer Publish/Subscribe System
- The content-based publish/subscribe model has been adopted by many services to deliver data between distributed users based on application-specific semantics. Two key issues in such systems, the semantic expressiveness of content matching and the scalability of the matching mechanism, are often found to be in conflict due to the complexity...
- Tags: Princeton University, P2P, Scalability
- White papers 2005-09-10
- On Survivable Access Network Design: Complexity and Algorithms
- With economic constraints and limited routing capability, the structure of an access network is typically a "fat tree", where the terminal has to relay the traffic from another terminal of the same or higher level. New graph theory problems naturally arise from such features of access network models, different from...
- Tags: Algorithm, Microsoft Access, Princeton University, Network, Problem, Provisioning, Network Design, Networking
- White papers 2007-07-01
- HEAT: Scalable Routing in Wireless Mesh Networks Using Temperature Fields
- Existing unicast routing protocols like for example AODV are not suited well for wireless mesh networks as in such networks, most traffic flows between a large number of mobile nodes and a few access points with Internet connectivity. This paper proposes HEAT, an anycast routing protocol for this type of...
- Tags: Princeton University, Network, Routing Protocol, Mesh Networking, Internet, Networking, Wireless
- White papers 2007-04-20
- Optimal Scheduling for OFDMA Systems
- This paper considers a scheduling and resource allocation problem for the downlink of an OFDMA-based wireless network, where the channel estimation error is modeled by a self-noise term in the decoding process. During each time-slot this involves selecting a subset of users for transmission, determining the assignment of available subcarriers...
- Tags: Algorithm, Paper, Princeton University, OFDMA, Engineering
- White papers 2006-11-24
- A Unified Power Control Algorithm for Multiuser Detectors in Large Systems: Convergence and Performance
- A unified approach to energy-efficient power control, applicable to a large family of receivers including the matched filter, the decorrelator, the linear Minimum-Mean-Square-Error detector MMSE, and the individually and jointly optimal multiuser detectors, has recently been proposed for Code-Division-Multiple-Access CDMA networks. This Unified Power Control UPC algorithm exploits the linear...
- Tags: Algorithm, Princeton University, Performance, Convergence, Engineering
- White papers 2005-10-07
- TCP/IP Interaction Based on Congestion Price: Stability and Optimality
- Despite the large body of work studying congestion control and adaptive routing in isolation, much less attention has been paid to whether these two resource-allocation mechanisms work well together to optimize user performance. Most analysis of congestion control assumes static routing, and most studies of adaptive routing assume the offered...
- Tags: Princeton University, Congestion, Tcp/Ip, Engineering, Performance Management, Network Technology, Networking, Human Resources, Workforce Management
- White papers 2005-09-25
- RtMidi, RtAudio, and a Synthesis ToolKit (STK) Update
- This paper presents new and ongoing development efforts directed toward open-source, cross-platform C++ "Tools" for music and audio programming. RtMidi provides a common Application Programming Interface API for realtime MIDI input and output on Linux, Windows, Macintosh, and SGI computer systems. RtAudio provides complementary functionality for realtime audio input and...
- Tags: Audio, Princeton University, C++, RtMidi, RtAudio, C/C++, Programming Languages, Software Development, Software/Web Development
- White papers 2005-09-10
- A Unified Approach to Energy-Efficient Power Control in Large CDMA Systems
- A unified approach to power control, applicable to a large family of receivers including the matched filter, the decorrelator, the linear Minimum-Mean-Square-Error MMSE detector, and the individually and jointly optimal multiuser detectors, is proposed for Code-Division-Multiple-Access CDMA networks. The proposed approach exploits the linear relationship that has been shown to...
- Tags: Princeton University, CDMA, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2005-09-01
- Shared Display Wall Based Collaboration Environment in the Control Room of the DIII-D National Fusion Facility
- At the DIII-D National Fusion Facility control room, a large format shared display is being used in the control room to support routine collaborative scientific investigation during experimental operations. The US National Fusion Collaboratory Project conducted an observational study in order to identify the best ways of utilizing the shared...
- Tags: Collaboration, Princeton University, Tool, Wall, Productivity, Construction, Team Management, Management
- White papers 2005-08-30
- Evolving Toward a Self-Managing Network
- Why is network management so difficult? The authors think the complexity of the individual network elements is a big part of the problem, and a big barrier to fundamental change. Nowadays routers implement numerous routing protocols (e.g., BGP, OSPF, IS-IS, EIGRP, and RIP) and data-plane mechanisms (e.g., class-based queuing, RED,...
- Tags: Princeton University, Network, Access Control, BGP, Networking
- White papers 2005-06-15
- Can this Computer see into the Future??? Global consciousness?
- Can this Computer see into the Future??? Global consciousness?Can This Black Box See Into the Future? DEEP in the basement of a dusty university library in Edinburgh lies a small black box, roughly the size of two cigarette packets side by side, that churns out random numbers in an endless...
- Tags: black box, Princeton University
- Discussion threads 2005-07-20
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