Filters: School Or College: "College of Engineering" Department: "Computing, School of" Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 226 |
 |
Gopalakrishnan, Ganesh | hopCP: A concurrent hardware description language | hopCP is a language for the specification, simulation, and synthesis of hardware systems. hopCP captures the behavior of a hardware system by specifying the causal relationships between actions that the system can perform. No specific timing discipline is implied by a hopCP specification. Hence, hop... | hopCP; Hardware systems | 1991 |
| 227 |
 |
Gopalakrishnan, Ganesh | From process-oriented functional specifications to efficient asynchronous circuits | A methodology for high-level synthesis and performance optimization of asynchronous circuits is described. A specification language called hopCP which is based on a simple extension to classical flow graphs is introduced. The extension involves the addition of expression actions to a flow graph, to ... | Synthesis; Performance optimization | 1991 |
| 228 |
 |
Gopalakrishnan, Ganesh | Hierarchical action refinement: a methodology for compiling asynchronous circuits from a concurrent HDL | A hardware specification formalism called hopCP is introduced, hopCP provides an uniform notation t o describe the causal relationships between a set of nonatomic actions which capture the computational, concurrency, control and communication aspects of hardware behavior. A systematic approach to sy... | Hierarchical action refinement; Hardware specification formalism; hopCP | 1991 |
| 229 |
 |
Henderson, Thomas C. | Parallel path consistency | Filtering algorithms are well accepted as a means of speeding up the solution of the consistent labeling problem (CLP). Despite the fact that path consistency does a better job of filtering than arc consistency, AC is still the preferred technique because it has a much lower time complexity. We ar... | Filtering algorithms; Parallel paths; Consistency; Consistent labeling problem; CLP | 1991 |
| 230 |
 |
Cohen, Elaine | Error bounded variable distance offset operator for free from curves and surfaces | Most offset approximation algorithms for freeform curves and surfaces may be classified into two main groups. The first approximates the curve using simple primitives such as piecewise arcs and lines and then calculates the (exact) offset operator to this approximation. The second offsets the contro... | Error bounded; Freeform curves | 1991 |
| 231 |
 |
Cotter, Neil E. | Generality Vs. speed of convergence in the cart-pole balancer | This paper compares the speed of convergence to an optimal solution of four controllers for the problem of balancing a pole on a cart. We demonstrate that controllers whose design is tailored specifically to the cart-pole problem (i.e. less general) converge more rapidly to an optimal solution. How... | Cart-pole balancer; Generality; Speed of convergence | 1991 |
| 232 |
 |
Hoogenboom, Peter J. | Semantic definition of a subset of the structured query language (SQL) | SQL is a relational database definition and manipulation language. Portions of the manipulation language are readily described in terms of relational algebra. The semantics of a subset of the SQL select statement is described. The select statement allows the user to query the database. The select st... | 1991 | |
| 233 |
 |
Hoogenboom, Peter J. | System performance advisor user guide | The usage of the System Performance Advisor (SPA) expert system is described. Documentation of SPA system commands, system variables, diagnostic rules is given. Information on how to run the SPA system is discussed. In addition, an overview of how SPA searches for problems is supplied. The purpose o... | System Performance Advisor; SPA; User guide | 1991 |
| 234 |
 |
Starkey, Mike | A lisp-based occam interpreter | The OCCAM programming language is an implementation of Communicating Sequential Processes and is used in a number of different areas. These areas usually require explicitly describing small-grain paralleslism. OCCAM programs formed by such descriptions can be tested for correctness by executing the... | Lisp-based; Occam interpreter | 1991 |
| 235 |
 |
Starkey, Mike | Transforming disfigured and disoriented areas into routable switchboxes | Routing an entire circuit requires partitioning the circuit (routing area) into smaller, localized routing areas. Using non-rectangular, rotated switchbox shapes (and therefore non-manhattan routing layout) has the potential to simplify the partitioning of the circuit into routable areas and to use ... | Disfigured areas; Disoriented areas; routable switchboxes | 1991 |
| 236 |
 |
Lindstrom, Gary E. | Modularity meets inheritance | We "unbundle" several roles of classes in existing languages, by providing a suite of operators independently controlling such effects as combination, modification, encapsulation, name resolution, and sharing, all on the single notion of module. All module operators are forms of inheritance. Thus, ... | Modularity; Jigsaw computer tool | 1991 |
| 237 |
 |
Gopalakrishnan, Ganesh | Verification of regular arrays by symbolic simulation | Many algorithms have an efficient hardware formulation as a regular array of cells, which can be implemented in VLSI as regular circuit structures. Bit-sliced microprocessors, pattern matching circuits, associative cache memories, Hue-grain systolic arrays, and embedded memory-with-logic structure... | Verification; regular arrays; symbolic simulation | 1991 |
| 238 |
 |
Gopalakrishnan, Ganesh | High level optimizations in compiling process descriptions to asynchronous circuits | Asynchronous/'Self-Timed designs are beginning to attract attention as promising means of dealing with the complexity of modern VLSI technology. In this paper, we present our views on why asynchronous systems matter. We then present details of our high level synthesis tool SHILPA that can automatic... | Self-timed; VLSI | 1992 |
| 239 |
 |
Sobh, Tarek M.; Henderson, Thomas C. | A dynamic recursive structure for intelligent inspection | We suggest a new approach for inspection and reverse engineering applications. 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... | Intelligent inspection; Discrete event dynamic systems; DEDS; Industrial inspection; Dynamic recursive structure | 1992 |
| 240 |
 |
Richardson, William F.; Brunvand, Erik L. | The NSR processor prototype | The NSR (Non-Synchronous RISC) processor is a general purpose processor structured as a collection of self-timed units that operate concurrently and communicate over bundled data channels in the style of micropipelines. These units correspond to standard synchronous pipeline stages such as Instructi... | Self-timed Systems; Asynchronous systems; Micropipelines; FPGAs; RISC processor; NSR | 1992 |
| 241 |
 |
Cohen, Elaine | Hybrid symbolic and numeric operators as tools for analysis of freeform surfaces | Freeform surfaces are commonly used in Computer Aided Geometric Design?? so accurate analysis of surface properties is becoming increasingly important In this paper we de ne surface slope and surface speed?? develop visualization tools?? and demonstrate that they can be useful in the design proc... | Freeform surfaces | 1992 |
| 242 |
 |
Orr, Douglas B. | OMOS - An object server for program execution | The benefits of object-oriented programming are well known, but popular operating systems provide very few object-oriented features to users, and few are implemented using object-oriented techniques themselves. In this paper we discuss a mechanism for applying object-oriented programming concepts to... | OMOS; Object server | 1992 |
| 243 |
 |
Sobh, Tarek M.; Henderson, Thomas C. | A dynamic recursive structure for intelligent exploration | We suggest a new approach for inspection and reverse engineering applications. 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 dy... | Intelligent exploration; Discrete event dynamic systems; DEDS; Dynamic recursive finite state machines; DRFSM | 1992 |
| 244 |
 |
Bruderlin, Beat | Constraint objects ? integrating constraint definition and graphical interaction | This paper describes the implementation of a new constraint??based tech?? nique 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 ... | Constraint objects | 1992 |
| 245 |
 |
Gopalakrishnan, Ganesh | Towards a verification technique for large synchronous circuits | We present a symbolic simulation based veri cation 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 veri cation... | symbolic simulation; verification | 1992 |
| 246 |
 |
Richardson, William F.; Brunvand, Erik L. | The NSR processor prototype | The NSR Non Synchronous RISC processor is a general purpose processor structured as a collection of self timed units that operate concurrently and communicate over bundled data channels in the style of micropipelines?? These units correspond to standard synchronous pipeline stages such as Instr... | Self-timed Systems; Asynchronous systems; Micropipelines; FPGAs; RISC processor | 1992 |
| 247 |
 |
Orr, Douglas B.; Mecklenburg, Robert | OMOS ? An object server for program execution | The benefits of object-oriented programming are well known but popular operating systems provide very few object oriented features to users and few are im plemented using object oriented techniques themselves In this paper we discuss a mechanism for apply ing object oriented programming co... | OMOS; Object server | 1992 |
| 248 |
 |
Sobh, Tarek M. | Autonomous Observation | We 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 defined as ranges on parameter subsets. The dynamic recursive context for finite state machines (... | Observation; Manipulation process | 1992 |
| 249 |
 |
Orr, Douglas B.; Mecklenburg, Robert; Hoogenboom, Peter J.; Lepreau, Jay | Dynamic program monitoring and transformation using the OMOS object server | In traditional monolithic operating systems the con?? straints of working within the kernel have limited the sophistication of the schemes used to manage exe?? cutable program images By implementing an exe?? cutable image loader as a persistent user??space pro?? gram we can extend system prog... | Program monitoring; OMOS object server | 1992 |
| 250 |
 |
Akella, Venkatesh; Gopalakrishnan, Ganesh | Specification and validation of control intensive ICs in hopCP | Control 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... | Asynchrony; Behavioral simulation; Formal methods; Hardware description languages; Formal specifiation and validation; hopCP | 1992 |