In this paper, we design and implement a prototypical heterogeneous distributed database system, named DIME (Distributed Information Management). DIME has the following salient properties. First, DIME allows both 810bat retrieval operations and global update operations where dzferent concurrency control schemes are used in dzfferent local database systems (LDBSs). Second, DIME implements intern...

Programming paradigms are designed to express algorithms elegantly and efficiently. There are many parallel programming paradigms, each suited to a certain class of problems. Selecting the best parallel programming paradigm for a problem minimizes programming effort and maximizes performance. Given the increasing complexity of parallel applications, no one paradigm may be suitable for all compo...

This paper describes an integrated sensor system for precision maritime surface navigation in tightly confined harbor environments. The system tightly integrates GPS, inertial, image and laser measurements with an onboard electronic charting system to provide accurate bearing and/or range measurements to known navigational aids, allowing robust and accurate piloting relative to navigation aids ...

One of the major challenges faced by designers of ad hoc network systems is supporting the deployment of applications that require tightly constrained communication support. Examples of this application class include emergency response systems, military systems and mobile or sensor-based scientific applications. This paper describes QoS-AODV ̧ an integrated End-to-End Delay (EED) bounded route d...

Performance comparisons between the three major INS/GPS system architectures for various mission scenarios will be presented in order to understand the benefits of each. The loosely coupled and tightly coupled systems will be compared in several scenarios including aircraft flying against jammers and a helicopter flying a scout mission. The tightly coupled and deep integration architectures wil...

Processor-in-memory is a new class of computer architecture designed for reducing the performance gap between the processor and the memory. This architecture provides a tightly-coupled heterogeneous environment by integrating different processors in a system. An efficient parallelization and optimization mechanism is necessary for this system to transform the existed applications to achieve bet...

This paper presents an analysis of a proposed tightly coupled Inertial/GPS navigation system for UAV applications. An indirect, error state extended Kalman filter is employed to estimate vehicle position, velocity, attitude and IMU bias errors. The indirect configuration linearises the state transition matrix and greatly reduces the required feedback frequency. Standard GPS C/A code pseudo-rang...

A number of parameters associated with the isolation of plant mitochondria were carefully examined in the hope of optimizing the isolation technique. Dark-grown mung bean (Phaseolus aureus var. Jumbo) hypocotyls were used as the source of mitochondria. Necessary conditions for the isolation of tightly coupled plant mitochondria include: (a) gentle tissue disruption; (b) rigorous exclusion of co...

The ever increasing demand for data processing requires different paradigms for electronics. Excellent performance capabilities such as low power and high speed in electronics can be attained through several factors including using functional materials, which sometimes acquire superior electronic properties. The transduction-based transistor switching mechanism is one such possibility, which ex...

The Semantic Web effort has steadily been gaining traction in the recent years. In particular, Web search companies are recently realizing that their products need to evolve towards having richer semantic search capabilities. Description logics (DLs) have been adopted as the formal underpinnings for Semantic Web languages used in describing ontologies. Reasoning under uncertainty has recently t...