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CreatorTitleDescriptionSubjectDate
251 Sobh, Tarek M.; Henderson, Thomas C.A dynamic framwork for intelligent inspectionCAD Computer Aided Design typically involves the design manufacture and inspection of a me chanical part. The problem of reverse engineering is to take an existing mechanical part as the point of departure and to inspect or produce a design and perhaps a manufacturing process for the part. ...CAD; Manufacture; Inspection; Intelligent inspection1992
252 Kessler, Robert R.Using utilization profiles in allocation and partitioning for multiprocessor systemsThe problems of multiprocessor partitioning and program allocation are interdependent and critical to the performance of multiprocessor systems. Minimizing resource partitions for parallel programs on partitionable multiprocessors facilitates greater processor utilization and throughput. The proces...utilization profiles; multiprocessor partitioning; program allocation1992
253 The programming language jigsaw: mixins, modularity and multiple in heritanceThis dissertation provides a framework for modularity in programming languages. In this framework known as Jigsaw, inheritance is understood to be an essential linguistic mechanism for module manipulation. In Jigsaw, the roles of classes in existing languages are "unbundled," by providing a suit...Jigsaw framework; Mixins1992
254 Cohen, ElaineSecond order surface analysis using hybrid symbolic and numeric operatorsResults from analyzing the curvature of a surface can be used to improve the implementation, efficiency, and effectiveness of manufacturing and visualization of sculptured surfaces. In this paper, we develop a robust method using hybrid symbolic and numeric operators to create trimmed surfaces each...Surface analysis; Hybrid symbolic operators; Numeric operators1992
255 Bruderlin, BeatRobust boolean set operations for manifold solids bounded by planar and natural quadric surfacesThis paper describes our latest effort in robust solid modeling. An algorithm for set operations on solids bounded by planar and natural quadric surfaces, that handles all geometrically degenerate cases robustly, is described. We identify as the main reason for the lack of robustness in geometric m...Robust solid modeling; Robust boolean set operations; Manifold solids1992
256 Gopalakrishnan, GaneshDynamic reordering of high latency transactions in time-warp simulation using a modified micropipelineTime warp based simulation of discrete-event systems is an efficient way to overcome the synchronization overhead during distributed simulation. As computations may proceed beyond synchronization barriers in time warp, multiple checkpoints of state need to be maintained to be able to rollback inva...Asynchronous design; Micropipelines; Dynamic instruction reordering; Time warp simulations1992
257 Sobh, Tarek M.Autonomous observationWe address the problem of observing an agent?? We advocate a modeling approach for the visual system and its observer where a discrete event dynamic system DEDS framework is developed and events are de ned as ranges on parameter subsets?? The dynamic recursive context for nite state machine...Autonomous observation1992
258 Free form surface analysis using a hybrid of symbolic and numeric computationDetailed analysis of many mathematical properties of sculptured models has been hindered by the fact that the properties do not have the same representation as the surface For example unit tangents surface normals and principal curvatures are typically computed at prede??ned discrete sets of ...Surface analysis1992
259 Gopalakrishnan, GaneshTowards a verification technique for large synchronous circuitsWe present a symbolic simulation based verification approach which can be applied to large synchronous circuits. A new technique to encode the state and input constraints as parametric Boolean expressions over the state and input variables is used to make our symbolic simulation based verification...Verification; symbolic simulation1992
260 Bruderlin, BeatRobustness in geometric modeling - an intuitionistic and tolerance-based approachAn intuitionistic geometry approach is taken to develop two tolerance-based methods for robust geometric computation. The so called analytic model method and the approximated model method are developed independently of a specific application or a geometric algorithm. Geometric robustness is formally...Robustness; Geometric modeling; Intuitionistic geometry; Geometric robustness1992
261 Cohen, ElaineHybrid symbolic and numeric operators as tools for analysis of freeform surfacesFreeform surfaces are commonly used in Computer Aided Geometric Design, so accurate analysis of surface properties is becoming increasingly important. In this paper we define surface slope and surface speed, develop visualization tools, and demonstrate t h a t they can be useful in the design proces...Freeform surfaces; Hybrid operators1992
262 Gopalakrishnan, GaneshAsynchronous circuit verification using trace theory and CCSWe investigate asynchronous circuit verification using Dill's trace theory as well as Milner's CCS (as mechanized by the Concurrency Workbench). Trace theory is a formalism specifically designed for asynchronous circuit specification and verification. CCS is a general purpose calculus of communicat...Trace theory; Verification; CCS1992
263 Gopalakrishnan, GaneshHOP: A formal model for synchronous circuits using communicating fundamental mode symbolic automataWe study synchronous digital circuits in an abstract setting. A circuit is viewed as a collection of modules connected through their boundary ports, where each port assumes a fixed direction (input or output) over one cycle of operation, and can change directions across cycles. No distinction is ma...HOP1992
264 Gopalakrishnan, GaneshSpecification and validation of control-intensive integrated circuits in hopCPControl intensive ICs pose a significant challenge to the users of formal methods in designing hardware. These ICs have to support a wide variety of requirements including synchronous and asynchronous operations, polling and interrupt-driven modes of operation, multiple concurrent threads of execut...control-intensive; integrated circuits; hopCP; Computer hardware design; Validation1992
265 Orr, Douglas B.Dynamic program monitoring and transformation using the OMOS object serverIn traditional monolithic operating systems the constraints of working within the kernel have limited the sophistication of the schemes used to manage executable program images. By implementing an executable image loader as a persistent user-space program, we can extend system program loading capabi...Program monitoring; Object/Meta-Object Server; OMOS1992
266 Akella, VenkateshCFSIM: A concurrent compiled-code functional simulator for hopCPControl intensive ICs pose a significant challenge to the users of formal methods in designing hardware. These ICs have to support a wide variety of requirements including synchronous and asynchronous operations, polling and interrupt-driven modes of operation, multiple concurrent threads of executi...CFSIM; Hardware design; hopCP1992
267 Bruderlin, BeatConstraint objects - integrating constraint definition and interactionThis paper describes the implementation of a new constraint-based technique for direct manipulation in interactive CAD, which will simplify the design process, especially in the early stages. We introduce so called Constraint Objects and Parameter Objects which constitute an object-oriented view on ...Constraint objects; Parameter objects1992
268 Cohen, ElaineSecond order surface analysis using hybrid symbolic and numeric operatorsResults from analyzing the curvature of a surface can be used to improve the implementation?? e ciency?? and e ectiveness of manufacturing and visualization of sculptured surfaces In this paper?? we develop a robust method using hybrid symbolic and numeric operators to create trimmed surfaces e...Second order surface analysis; Visualization; Sculptured surfaces1992
269 Bruderlin, BeatRobustness in solid modeling - a tolerance based, intuitionistic approachThis paper presents a new robustness method for geometric modeling operations. It computes geometric relations from the tolerances defined for geometric objects and dynamically updates the tolerances to preserve the properties of the relations, using an intuitionistic self-validation approach. Geome...Solid modeling; Geometric modeling; Intuitionistic1992
270 Cohen, ElaineAdaptive isocurves based rendering for freeform surfacesFreeform surface rendering is traditionally performed by approximating the surface with polygons and then rendering the polygons This approach is extremely common because of the complexity in accurately rendering the surfaces directly Recently?? several papers presented methods to render surface...Freeform surface rendering; Isocurves1992
271 Lindstrom, Gary E.Our LIPS are sealed: interfacing logic and functional programming systemsWe report on a technique for interfacing an untyped logic language to a statically poly morphically typed functional language Our key insight is that polymorphic types can be interpreted as "need to know" specifications on function arguments. This leads to a criterion for liberally yet safely invoki...LIPS; Logic language; Functional language1992
272 Zachary, Joseph L.Metamusing on object persistenceThe need to "open up languages" has led to object-oriented programming languages with object-oriented implementations. By encapsulating the fundamental aspects of a language semantics within a set of default classes and giving t h e programmer t h e flexibility of deriving new versions of these base...Metamusing; Object persistence1992
273 Evans, John; Kessler, Robert R.Using utilization profiles in allocation and partitioning for multiproscessor systemsThe problems of multiprocessor partitioning and program allocation are interdependent and critical to the performance of multiprocessor systems?? Minimizing resource partitions for parallel programs on partitionable multiprocessors facilitates greater processor utilization and throughput?? The pro...utilization profiles; multiprocessor partitioning; program allocation1992
274 Cohen, ElaineAdaptive isocurves based rendering for freeform surfacesFreeform surface rendering is traditionally performed by approximating the surface with polygons and then rendering the polygons. This approach is extremely common because of the complexity in accurately rendering the surfaces directly. Recently, several papers presented methods to render surfaces ...Freeform surface rendering; Isocurves1992
275 Bruderlin, BeatGDI reference manualGDI is a dialog interface tool library for C + + applications. It facilitates the design and implementation of graphical, object-oriented user interfaces for workstations equipped with a graphical display, a mouse and a keyboard. GDI's design allows for its portability onto a multitude of platforms....GDI; Dialog interface tool library1992
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