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Creator | Title | Description | Subject | Date |
| 1 |
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Lindstrom, Gary E. | A framework for module-based language processors | A system composed of interconnected modules is a module-based system. We present an object-oriented (0-0) framework for the development of processors for module-based systems, such as compilers for 0-0 languages, linkers/loaders, and tools for user/system libraries. We claim t h a t this framework,... | Language processors; Jigsaw; Module-based | 1993 |
| 2 |
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Michell, Nick | A gallium arsenide mutual exclusion element | A mutual exclusion element is a key component in building asynchronous and self-timed circuits. As part of our effort to design high performance self-timed circuits, we have designed a mutual exclusion element in gallium arsenide. This circuit has been fabricated in a 1.2? process and tested. A test... | Mutual exclusion element; Self-timed circuits | 1993 |
| 3 |
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Gopalakrishnan, Ganesh | A transformational approach to asynchronous high-level synthesis | Asynchronous high-level synthesis is aimed at transforming high level descriptions of algorithms into efficient asynchronous circuit implementations. This approach is attractive from the point of view of the flexibility it affords in performing high level program transformations on users' initial d... | High level synthesis tool; SHILPA | 1993 |
| 4 |
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Sobh, Tarek M. | Active inspection and reverse engineering | We propose a new design for inspection and reverse engineering environments. In particular, we investigate the use of discrete event dynamic systems (DEDS) to guide and control the active exploration and sensing of mechanical parts for industrial inspection and reverse engineering. We introduce dyn... | Discrete event dynamic systems; DEDS; Industrial inspection | 1993 |
| 5 |
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Khoche, Ajay | An extended cell set of self-timed designs | The high level synthesis approach described in [1] uses hopCP[2] language for behavioral descriptions. The behavioral specifications are then translated into Hop Flow Graphs (HFGs). The actions in the graph are then refined such that refined actions can be directly mapped onto asynchronous circuit b... | Self-timed designs; hopCP; Hop Flow Graphs; Asynchronous circuit blocks; Action-blocks | 1993 |
| 6 |
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Sobh, Tarek M. | Analysis of tolerance for manufacturing geometric objects from sense data | In this work we address the problem of manufacturing machine parts from sense data. Constructing geometric models for the objects from sense data is the intermediate step in a reverse engineering manufacturing system. Sensors are usually inaccurate, providing uncertain sense information. We constr... | Manufacture | 1993 |
| 7 |
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Riloff, Ellen M. | Automatically constructing a dictionary for information extraction tasks | Knowledge-based natural language processing systems have achieved good success with certain tasks but they are often criticized because they depend on a domain-specific dictionary that requires a great deal of manual knowledge engineering. This knowledge engineering bottleneck makes knowledge-based ... | Information extraction; Dictionary construction; Knowledge-based systems; AutoSlog; Domain-specific dictionary | 1993 |
| 8 |
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Sobh, Tarek M.; Henderson, Thomas C. | Concurrent engineering and robot prototyping | This report addresses the theoretical basis for building a prototyping environment for electromechanical systems using concurrent engineering approach. In Designing a robot manipulator, as an example of electro-mechanical systems, the interaction between several modules (S/W, VLSI, CAD, CAM, Robotic... | Robot prototyping | 1993 |
| 9 |
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Bruderlin, Beat | Constraint objects - integrating constraint definition and interaction | This paper describes the implementation of a new constraint-based technique for direct manipulation in interactive CAD. We introduce so called Constraint Objects and Parameter Objects which constitute an object-oriented view on constraints. A graph algorithm is employed to analyze the relative degr... | Constraint objects | 1993 |
| 10 |
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Hansen, Charles D. | Data distributed, parallel algorithm for ray-traced volume rendering | This paper presents a divide-and-conquer ray-traced volume rendering algorithm and a parallel image compositing method, along with their implementation and performance on the connection Machine CM-5, and networked workstations. This algorithm distributes both the data and the computations to individ... | Volume rendering; Ray tracing; ; Computer algorithms; Scientific visualization; Network computing; Massively parallel processing | 1993 |
| 11 |
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Hansen, Charles D. | Data distributed, parallel algorithm for ray-traced volume rendering | This paper presents a divide-and-conquer ray-traced volume rendering algorithm and a parallel image compositing method, along with their implementation and performance on the Connection Machine CM-5, and networked workstations. This algorithm distributes both the data and the computations to individ... | Volume rendering; Ray tracing; ; Computer algorithms; Scientific visualization; Network computing; Massively parallel processing | 1993 |
| 12 |
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Lepreau, Jay | DRAFT: work in progress - - - comments solicited evolving Mach 3.0 to use migrating threads | Like most operating systems, Mach 3.0 views threads as statically associated with a single task. An alternative model is that of migrating threads, in which a single thread abstraction moves between tasks with the logical flow of control, and "server" code is passively executed. We have compatibly r... | DRAFT | 1993 |
| 13 |
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Hansen, Charles D. | Fast data parallel polygon rendering | This paper describes a data parallel method for polygon rendering on a massively parallel machine. This method, based on a simple shading model, is targeted for applications which require very fast rendering for extremely large sets of polygons. Such sets are found in many scienti c visualization ap... | | 1993 |
| 14 |
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Sobh, Tarek M.; Henderson, Thomas C. | Intermediate results in active inspection and reverse engineering | In previous work [18], we have proposed a new design for inspection and reverse engineering environments. We have investigated the use of the dynamic recursive context of discrete event dynamic systems (DRFSM DEDS) to guide and control the active exploration and sensing of mechanical parts for indu... | Industrial inspection; Discrete event dynamic systems; DRFSM; DEDS | 1993 |
| 15 |
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Lindstrom, Gary E. | Modular language processors as framework completions | The conceptual and specificational power of denotational semantics for programming language design has been amply demonstrated. We report here on a language implementation method that is similarly semantically motivated, but is based upon object-oriented design principles, and results in flexible an... | Modular language processors; Denotational semantics; Framework completions | 1993 |
| 16 |
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Lindstrom, Gary E. | Modules as values in a persistent object store | We report on an object manager (OM) providing persistent implementations for C ++ classes. Our OM generalizes this problem to that of managing persistent modules, where the module concept is an abstract data type (ADT). This approach permits a powerful suite of module manipulation operations to be ... | Object manager; OM; Persistent object store | 1993 |
| 17 |
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Hibler, Michael J. | Notes on thread models in Mach 3.0 | During the Mach In-Kernel Servers work, we explored two alternate thread models that could be used to support traps to in-kernel servers. In the "migrating threads" model we used, the client's thread temporarily moves into the server's task for the duration of the call. In t h e "thread switching" ... | Thread models; In-kernel servers; Thread switching; Mach 3.0 | 1993 |
| 18 |
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Brunvand, Erik L. | The NSR processor | The NSR (Non-Synchronous RISC) processor is a general-purpose computer structured (IS U collection of self-timed blocks that operate concurrently and communicate over bundled data channels in the style of micropipelines [3, 16]. These blocks correspond to standard synchronous pipeline stages such ... | | 1993 |
| 19 |
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Gopalakrishnan, Ganesh | Peephole optimization of asynchronous networks through process composition and burst-mode machine generation | In this paper we discuss the problem of improving the e ciency of macromodule networks generated through asynchronous high level synthesis We compose the behaviors of the modules in the sub network being optimized using Dill s trace theoretic operators to get a single behavioral description for ... | Macromodule networks; Peephole; Asynchronous networks | 1993 |
| 20 |
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Gopalakrishnan, Ganesh | Peephole optimization of asynchronous networks through process composition and burst-mode machine generation | In this paper, we discuss the problem of improving the efficiency of macromodule networks generated through asynchronous high level synthesis. We compose the behaviors of the modules in the sub-network being optimized using Dill's trace-theoretic operators to get a single behavioral description for ... | Peephole optimization; Macromodule networks; Process composition; Burst-mode | 1993 |
| 21 |
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Michell, Nick | PPL 1.2mu gallium arsenide cell set | The purpose of this note is to describe the 1.2/i gallium arsenide PPL cell set - not only what is included, but design decisions made along the way. The first section is an overview of the Umitations imposed by the use of gallium arsenide technology, the next section describes the trade-offs in des... | Gallium arsenide cells; PPL cell set | 1993 |
| 22 |
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Sobh, Tarek M. | Prototyping a robotic manipulator and controller | Building a robot and its environment (control, software, hardware, simulation, etc) is a complex task that requires the efforts of an experienced engineering team. Once a robot model has been chosen and a design has been agreed upon, it becomes difficult to make design changes without affecting the ... | Robotic manipulator; Robotic controller; Prototyping | 1993 |
| 23 |
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Sobh, Tarek M.; Henderson, Thomas C. | Prototyping environment for robot manipulators | Prototyping is an important activity in engineering. Prototype development is a good test for checking the viability of a proposed system. Prototypes can also help in determining system parameters, ranges, or in designing better systems. We are proposing a prototyping environment for electro-mechani... | Prototyping; Robot manipulators | 1993 |
| 24 |
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Painter, James S. | Radioptimization - Goal based rendering | This paper presents a method for designing the illumination in an environment using optimization techniques applied to a radiosity based image synthesis system. An optimization of lighting parameters is performed based on user specified constraints and objectives for the illumination of t h e envir... | Radioptimization; Illumination; Optimization; Lighting parameters; Radiosity based image synthesis | 1993 |
| 25 |
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| Reconstruction of sculptured surface using coordinate measuring machines | This paper presents a strategy for reverse engineering that uses a coordinate measur ing machine to reconstruct three dimensional sculptured surfaces. A rough initial model of the surface is generated manually. An iterative method is then used to refine the surface model until the error is within a ... | Reconstruction; Sculptured surface; Coordinate measuring machines | 1993 |
