Award Data

In this proposal, we will develop a uniform framework, called a multimedia mediator, for integrating and querying multimedia data as well as heterogenous data located on a distributed network. The multimedia mediator will use distributed computing technology to scale up to real-world applications. We will develop graphical query languages and query engines whereby an end-user can query a system ...

THE NAVY HAS IDENTIFIED A NEED FOR AN IMPROVED TECHNOLOGY TO PROVIDE CONTROL OF PARTICULATE AND GASEOUS CONTAMINANTS TO PROTECT SHIPBOARD PERSONNEL AND EQUIPMENT. THE NEW SYSTEM SHOULD BE A NON-BARRIER TYPE FILTRATION DEVICE WITH THE FOLLOWING CHARACTERISTICS: VERY LOW PRESSURE DROP, REQUIRE LITTLE MAINTENANCE, BE INSENSITIVE TO CHANGES IN AMBIENT CONDITIONS SUCH AS TEMPERATURE, PRESSURE, AND MOIS ...

Cured aircraft composite materials present a particularly difficult challenge for recycling technology. Those materials have mostly thermosetting epoxy matrices and occur in intimate association with metals, paints, and coatings. Current techniques for recycling thermoset composites, mostly for automotive sheet molding compounds (SMC), involve pulverizing the material for use as fillers. Th ...

A novel tertiary recycling process is proposed for investigation as an economical means for recycling shipboard plastic waste. Early development work has shown that this process can convert a wide variety of polymers and composites into low molecular weight hydrocarbons at temperatures below 200'C. The hydrocarbons produced can then be reused as chemicals, fuels, or monomers. Metal, glass, and fil ...

THIS PROJECT PROPOSES AN ADVANCED COMPOSITE, MODULAR ENCLOSURE FOR FUTURE NAVY INTERCOOLED RECUPERATED (ICR) GAS TURBINE ENGINES. THE ENCLOSURE ENVISIONED BY ADVANCED COMPOSITE TECHNOLOGY, INC (ACT) WILL BE COMPOSED OF AN OUTER STRUCTURAL COMPOSITE SHELL (SCS) WITH AN INTERNAL FLEXIBLE PROTECTIVE SHROUD (PS). THE MODULAR CONCEPT WILL ALLOW EASY REMOVAL AND ACCESS TO THE ENGINE FOR INSPECTION, MAIN ...

THIS PROJECT WILL PROVIDE THE NAVY WITH A LOW-COST FIBER OPTIC ENHANCEMENT TO THE "STANDARD" COMPOSITE PROPULSION SHAFTS IT PROPOSES FOR FUTURE SHIPS. THIS ENHANCEMENT WILL PROVIDE THREE SPECIFIC ADVANTAGES. FIRST, IT WILL PROVIDE A MEANS OF QUALITY CONTROL THROUGH THE SCIENTIFIC MONITORING OF THE THICK WALL COMPOSITE DURING MANUFACTURE. SECOND, IT WILL PROVIDE A MEANS OF "REAL-TIME" MONITORING OF ...

A MODEL FOR PREDICTING THE PERFORMANCE IMPACT OF ENGINE DETERIORATION IS PROPOSED FOR FEASIBILITY EVALUATION. THIS MODEL WOULD ACCOUNT FOR ROTATING COMPONENT DETERIORATION SUCH AS INCREASED TIP CLEARANCES, SURFACE ROUGHNESS, LEADING EDGE BLUNTNESS AND VAN BOW AND TWIST. THE PROPOSED APPROACH USES A STAGE STACKING METHOD TO ALLOCATE LOSSES THROUGHOUT THE ENGINE WHICH ARE DEPENDENT ON OPERATING TIME ...

A stratified random sampling technique is used to minimize the time until detection of users of illicit drugs. The stratification is based on likelihood of drug use and importance of the billet occupied. Likelihood of drug used is calculated from fundamental characteristics (e.g., age, sex, education), performance, health and behavior (e.g., relative amount of sick leave, unusual behavior) ...

The project addresses the development of a 64K Massively Parallel P rocessor (MPP) accelerator board together with OS software for installation on a HP-748 workstation providing generation of real-time, high-fidelity, high pixel density and high refresh rate graphic images. The MPP board will be based on associative string processors (ASPs) in a modular massively parallel computer (MPC) ar ...

USE OF DISTRIBUTED COMPUTING IN NAVY SYSTEMS IS INCREASING. DISTRIBUTED OPERATING SYSTEMS (DOS) PROVIDE THE ADVANTAGES OF DISTRIBUTED COMPUTING TO USER APPLICATIONS. REQUIREMENTS FOR REALTIME PERFORMANCE, RELIABILITY/FAULT TOLERANCE, AND SECURITY MUST BE ADDRESSED BY A DOS. APPLICATION OF DOS TECHNOLOGY IS A COMPLICATED TASK. A KNOWLEDGE-BASED ASSIST WILL FACILITATE THE USE OF DISTRIBUTEDOPERATING ...