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Creator | Title | Description | Subject | Date |
| 1 |
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Ailion, David Charles | 79Br nuclear-quadrupole-resonance lineshape and Raman-induced spin-lattice relaxation in the incommensurate phase of β- ThBr4 | We performed 7 9Br nuclear-quadrupole-resonance (NQR) line-shape and spin-lattice relaxation time measurements in the incommensurate (D system j8-ThBr4 over the temperature range 293-2.5 K. In addition, we extended the theory of the effects of Raman processes on amplitudon and phason spin-lattice re... | Spin-lattice; NQR; Raman process; Line shape; Phason gap; Incommensurate systems | 1989 |
| 2 |
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Mathews, V. John | A baseband residual vector quantization algorithm for voiceband data signals | Abstract-In this paper, we present a new approach to the digitization and compression of a class of voiceband modem signals. Our approach, which we call baseband residual vector quantization (BRVQ), relies heavily upon the simple structure present in a modem signal. After the signal is converted to... | | 1989 |
| 3 |
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Seeley, Donn | A tour of the worm | On the evening of November 2, 1988, a self-replicating program was released upon the Internet 1. This program (a worm) invaded VAX and Sun-3 computers running versions of Berkeley UNIX, and used their sources to attack still more computers2. Within the space of hours this program had spread aacross ... | Computer worm | 1989 |
| 4 |
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Symko, Orest George | Absorption at radio frequencies in superconducting Y1Ba2Cu3Oy | The large magnetic-field-dependent ac absorption in superconducting Y1Ba2Cu3Oy ceramics and powders decreases slowly with increasing frequency in the range 2-16 MHz. The magnetic-field-dependent ac absorption is observed below Tc in superconducting Y1Ba2Cu3Oy ceramics, powders and twinned crystals ... | Copper-octahedral oxygen perovskites; Superconducting Y1Ba 2Cu3Oy; ac absorption | 1989 |
| 5 |
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Lindstrom, Gary E. | Abstract semantics for functional constraint programming | A denotational semantics is given for a lazy functional language with monotonic side-effects arising from the unification of singly-bound logical variables. The semantics is based on a Scott-style information system, which elegantly captures the notion of "constraint additin" inherent in unificati... | Abstract semantics | 1989 |
| 6 |
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Beckerle, Mary C. | Activation-dependent redistribution of the adhesion plaque protein, talin, in intact human platelets | Talin is a high molecular weight protein localized at adhesion plaques in fibroblasts. It binds vinculin and integrin and appears to participate in generating a transmembrane connection between the extracellular matrix and the cytoskeleton. | Talin | 1989 |
| 7 |
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George, Lal | An abstract machine for parallel graph reduction | An abstract machine suitable for parallel graph reduction on a shared memory multiprocessor is described. Parallel programming is plagued with subtle race conditions resulting in deadlock or fatal system errors. Due to the nondeterministic nature of program execution the utilization of resources ma... | Parallel graph reduction; Abstract machines | 1989 |
| 8 |
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George, Lal | An abstract machine for parallel graph reduction | An abstract machine for parallel graph reduction on a shared memory multiprocessor is described. This is intended primarily for normal order (lazy) evaluation of functional programs. It is absolutely essential in such a design to adapt an efficient sequential model since during execution under limit... | Parallel graph reduction | 1989 |
| 9 |
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Warner, Homer R. | An Approach to Evaluating the Completeness of a Medical Knowledge Base | Biomedical Informatics | | 1989 |
| 10 |
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Zhu, Xiaohong | Automatic compensating cleanup operation | Today's part geometries are becoming ever more complex and require more accurate tool path to manufacture. Machining process efficiency is also a major consideration for designers as well as manufacturing engineers. Although the current advanced CAD/CAM systems have greatly improved the efficiency ... | Part geometries | 1989 |
| 11 |
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Lee, Hyo Jong | Automatic mesh analysis technique by knowledge-based system | The finite element analysis technique has been recognized as a very important tool to solve various engineering problems, such as structural analysis, heat transfer, and fluid dynamics. The key point to the technique is discretization of the domain of interest into many finite elements. A good resul... | Mesh analysis; Mesh generation algorithm | 1989 |
| 12 |
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Cohen, Elaine | Automatic sculptured five-axis milling with check surfaces | An approach to 5-axis milling of B-spline surfaces is presented. Within its domain, it provides better check surface handling than APT. The scheme for tool position generation is based on a B-spline curve refinement method and a set of criteria for tolerance control which allows the tool positions ... | B-spline surfaces; 5-axis milling; Tool paths | 1989 |
| 13 |
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Pershing, David W. | Biomass combustion: relationship between pollutant formation and fuel composition | A 65-kW refractory-walled reactor was used to study biomass combustion under conditions typical of the suspension-burning phase in a spreader-stoker-fired boiler. Isothermal combustion data and nitric oxide (NO) emission rates were obtained as a function of temperature, local oxygen concentration, ... | Combustion; Emissions; Energy; Environmental control; Fuels; Pyrolysis; Biomass fuel; Particulates | 1989 |
| 14 |
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Hansen, Charles D.; Henderson, Thomas C. | CAD-based 3-D object recognition | We propose an approach to 3-D object recognition using CAD-based geometry models for freeform surfaces. Geometry is modeled with rational B-splines by defining surface patches and then combining these into a volumetric model of the object. Characteristic features are then extracted from this model ... | Object recognition; Strategy trees; Geometric knowledge representation; Automatic feature selection | 1989 |
| 15 |
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Carter, Tony M. | Cascade: a hardware alternative to bignums | The Cascade hardware architecture for high/variable precision arithmetic is described. It uses a radix-16 redundant signed-digit number representation and directly supports single or multiple precision addition, subtraction, multiplication, division, extraction of the square root and computation of ... | Cascade hardware; Bignums; Precision arithmetic | 1989 |
| 16 |
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Carter, Tony M. | Cascade: hardware for high/variable precision arithmetic | The Cascade hardware architecture for high/variable precision arithmetic is described. It uses a radix-16 redundant signed-digit number representation and directly supports single or multiple precision addition, subtraction, multiplication, division, extraction of the square root and computation... | | 1989 |
| 17 |
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Carter, Tony M.; Smith, Kent F. | Cell matrix methodologies for integrated circuit design | A class of integrated circuit design and implementation methodologies is described. These techniques are unique in that they simultaneously model both function and interconnect using cells. These cells are designed such that cell adjacency normally implies interconnection. The absence of an interco... | Integrated circuit design; Cell matrix | 1989 |
| 18 |
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Baehr, Wolfgang | Cloning and sequence analysis of the major outer membrane protein genes of two Chlamydia psittaci strains | We cloned and sequenced the gene encoding the major outer membrane protein (MOMP) of two Chlamydia psittaci strains, guinea pig inclusion conjunctivitis (GPIC) strain 1, and meningopneumonitis (Mn) strain Cal-10. Intraspecies alignment of the two C. psittaci MOMP genes revealed 80.6% similarity, and... | Base Sequence; Cloning, Molecular; Amino Acid Sequence | 1989 |
| 19 |
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Warner, Homer R. | Clustered Disease Findings: Aspects of Experts Systems | Biomedical Informatics | | 1989 |
| 20 |
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Armentrout, Peter B. | Collision-induced dissociation of Fen+ (n=2-10) with Xe: ionic and neutral iron binding energies | Cross sections for collision-induced dissociation (CID) of Fen+ with Xe, 2≤n≤10, are presented. Experiments were performed on a newly constructed guided ion beam mass spectrometer, the design and capabilities of which are described in detail. The single mechanism for dissociation of iron cluster... | | 1989 |
| 21 |
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Bradshaw, Karen E. | Computer-Based Data Entry for Nurses in the ICU | Biomedical Informatics | | 1989 |
| 22 |
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Pryor, T. Allan | Computerized Nurse Charting | Biomedical Informatics | | 1989 |
| 23 |
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Gardner, Reed M. | Computerizing the Intensive Care Unit: Current Status and Future Directions | Biomedical Informatics | | 1989 |
| 24 |
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Gardner, Reed M. | Computers in the Intensive Care Unit Match or Mismatch | Biomedical Informatics | | 1989 |
| 25 |
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Cohen, Elaine | Computing offsets and tool paths with Voronoi diagrams | In this paper we describe the use of Voronoi diagrams to generate offsets for planar regions bounded by circular arcs and line segments, and then use the generated offsets as tool paths for NC machining. Two methods are presented, each producing a different type of offset. One of them generates the ... | Voronoi diagrams | 1989 |
