摘要:
The general purpose of the present invention is to provide a optimized procedure for performing matrix by matrix multiplication in a parallel architecture computer, either digital or optical, that is generally capable of handling two-dimensionally structured image data sets.The present invention provides a process for performing matrix by matrix multiplication in a parallel computer architecture having first and second means for representing spatially distributed data values obtainable from corresponding first and second matrices of values, said matrices having therein defined rows and columns of said values and said first and second data representing means having defined therein rows and columns of data representation positions, said architecture further having means for accumulating spatially distributed resultant values, the process comprising the steps of:(a) representing the respective data values of a first column of values of said first matrix in the corresponding rows of said first data representing means;(b) representing the respective data values of a first row of values of said second matrix in the corresponding columns of said second data representing means;(c) multiplying each of the values represented by said first data representing means with the spatially corresponding values represented by said second data representing means such that a matrix of resultant values is obtained, each resultant value being the product of the value of its corresponding row of said first column of said first matrix of values and the value of its corresponding column of said first row of said second matrix of values;(d) accumulating the respective resultant values as a matrix of cummulative resultant values; and(e) repeating steps (a)-(d) above for each successive column of said first matrix and correspondingly successive row of said second matrix.
摘要:
A novel, inexpensive sensor (10) for detecting volatile hydrocarbons and other solvent vapors detects leaks in the fittings and valves of petroleum refineries and chemical manufacturing and processing plants. The sensor comprises (a) a dielectric substrate (12) having a major surface; (b) a pair of interdigitated, electrically conductive electrodes (14a, 14b) disposed on the major surface of the substrate; and (c) a composite coating (16) covering the interdigitated electrodes and comprising (1) a conductive polymer, and (2) a dielectric polymer with an affinity for the solvent vapors to be detected.
摘要:
Transparent IR materials having a plasma polymerized saturated hydrocarbon coating exhibit excellent transmissive characteristics in the IR and exhibit excellent moisture, oxidative corrosion, and abrasion resistance.
摘要:
A sensor and method for detecting biological and chemical agents comprising metal interdigitized electrodes coated with hybrid polymer-based conducting film and an instrument for applying electrical voltage to the electrodes and registering the change in electrical current. The hybrid film also comprises indicator biomolecules encapsulated within the film or attached to it. The bioindicator molecules preferably comprise enzyme acetylcholinesterase. When these indicator biomolecules come in a contact with a pathogen, chemical and/or morphological changes occur in the film and electrical current flowing through the electrodes is modulated. The pathogen comprise inhibitors of enzymes, preferably organophosphates, thiophosphates or phosphonates. The change in current indicates the presence of a biological and chemical agent and is registered.
摘要:
A composite material having droplets of a liquid crystal material in a matrix of a coploymer of a multifunctional acrylate, or a mixture of different multifunctional acrylates, and a multifunctional mercaptan is prepared by photopolymerization. The liquid crystal material is initially mixed with a multifunctional acrylate monomer, a multifunctional mercaptan, and a photoinitiator to form a solution. The solution is exposed to ultraviolet light, whereupon the multifunctional acrylate monomer and multifunctional mercaptan copolymerize in a step reaction, and the liquid crystal separates from the copolymer as droplets dispersed throughout the copolymer matrix. The resulting material is placed between transparent, electrically conducting plates to form an electro-optic display device.
摘要:
The resistance to wear-induced failures during forming operations of non-ferrous die tooling materials, such as epoxy-based and zinc-based materials, is improved by treating the surface of the die tooling. In one approach, the surface of an organic-containing or metallic substrate is coated with a silicon-modified organic materials and then implanted with ions of an inert gas to transform the organic material to a silicon carbide-rich layer. In the other, nitrogen ions are implanted into the surface of a zinc-based alloy.
摘要:
A composite material includes droplets of a liquid crystal material dispersed within a matrix of a photopolymerized polymer. The material is prepared by forming a solution of the liquid crystal material and a monomer, and then polymerizing the monomer with light. The solubility of the liquid crystal material in the polymer is less than in the monomer. As polymerization progresses, a portion of the liquid crystal material separates as a second phase in the polymer matrix. The liquid crystal can be any suitable such material that is soluble in the monomer and less so in the polymer, and the monomer is a polymerizable acrylate or methacrylate. Liquid crystal devices are prepared by forming the composite material between two electrically conducting substrates.
摘要:
A number of alkyl and alkoxy-substituted ortho-cyanophenyl biphenylcarboxylate esters have been prepared for use as components for nematic liquid crystal mixtures which can be used in homeotropically aligned, field effect display devices or in dynamic scattering displays.These materials have large negative dielectric anisotropies and high birefringence.
摘要:
A sensor and method for detecting biological and chemical agents comprising metal interdigitized electrodes coated with hybrid polymer-based conducting film and an instrument for applying electrical voltage to the electrodes and registering the change in voltage. The hybrid film also comprises indicator biomolecules encapsulated within the film or attached to it. When these indicator biomolecules come in a contact with a biological and chemical agent, morphological changes occur in the film and electrical current flowing through the electrodes is modulated. The change in current indicates the presence of a biological and chemical agent and is registered.
摘要:
A novel, inexpensive sensor and method for detecting volatile compounds in the gas phase at concentrations of less than about 500 ppm in ambient air are provided. The sensor comprises (a) a dielectric substrate having a major surface; (b) a pair of electrically conductive electrodes disposed on the major surface of the substrate; and (c) a conductive polymer covering the pair of electrically conductive electrodes, with the conductive polymer doped with appropriate dopants in measurable excess of that stoichiometrically required to change the conductive polymer from a neutral state to a charged state to provide requisite conductivity. A method for making the sensor is provided, as is a method of use of the sensor which relates to its use in a monitoring system comprising a means for measuring the conductivity of the sensor connected to a warning means for providing an indication when the conductivity reaches a predetermined level. Contemplated specific methods of use include the detection of fugitive emissions in chemical plant environments; the detection of certain pollutants in vehicle exhaust; and the detection of certain pollutants near chemical handling operations, such as painting operations.