BIRD, TS 1976, 'NUMERICAL-CALCULATION OF RADIATION FROM A GUIDING STRUCTURE OF ARBITRARY CROSS-SECTION', ELECTRONICS LETTERS, vol. 12, no. 7, pp. 162-164.
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Cook, DJ, Morgan, DR, Sirivivatnanon, V & Chaplin, RP 1976, 'Differential thermal analysis of premix polymer cement materials', Cement and Concrete Research, vol. 6, no. 6, pp. 757-764.
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In this paper, the use of DTA thermograms, to examine the interaction between premix polymer systems and hydrating cement, are described. The thermograms indicate that the polymerisation method (i.e., thermal or irradiation) has little effect on the nature of the hydration products. It was also observed that polystyrene, polyvinyl acetate, polymethyl methacrylate and polyester-styrene, as premix components, react with the hydrating cement. Polystyrene and polyisoprene have no effect on the calcium hydroxide endotherm while polyacrylonitrile and polymethyl methacrylate have a slight effect. Polyvinyl acetate and polyester-styrene markedly reduce the calcium hydroxide endotherm and reduce the maturity of the paste. © 1976.
Cook, DJ, Morgan, DR, Sirivivatnanon, V & Chaplin, RP 1976, 'Premix copolymer cement materials', Cement and Concrete Research, vol. 6, no. 2, pp. 235-243.
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Studies to determine the influence of mixtures of monomers (and subsequently copolymers) on the behaviour of premix copolymer cement materials are described in this paper. Five system viz styreneacrylonitrile, styrene-vinyl acetate, methyl methacrylate - vinyl acetate, butyl methacrylate - methyl methacrylate and butyl acrylate - methyl methcrylate, were investigated. Setting time and hydration studies were carried out on premix cement pastes while compressive strength tests were carried out on premix mortars, to determine the influence of monomer volume, surfactants and polymerisation method. The results indicated, as has most of the work on premix systems, that the influence of the copolymers was to increase setting time, decrease the degree of hydration as measured by percentage of chemically combined water and decrease strength relative to that of specimens continuously moist cured. © 1976.
Waldron, KJ 1976, 'Elimination of the branch problem in graphical burmester mechanism synthesis for four finitely separated positions', Journal of Manufacturing Science and Engineering, Transactions of the ASME, vol. 98, no. 1, pp. 176-182.
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A graphical construction is presented which, when used for Burmester mechanism synthesis for four finitely separated positions, enables the designer to avoid solutions which will not pass all design positions without being disconnected. The construction is applied to the circle point curve and locates all regions of that curve which give acceptahlr solutions. The procedure is simple, requiring only construction of circles and strairhi lines. It is also compatible with Modler's technique for ensuring that the linkage pasxrs the design positions in the desired order. © 1976 by ASME.
Waldron, KJ 1976, 'GRAPHICAL BURMESTER DESIGN OF FOUR-BAR LINKAGES FOR A SPECIFIED POSITION ORDER AND WITH ALL POSITIONS REACHABLE WITHOUT DISCONNECTION.'.
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In industrial design, the problem of guiding a body through a number of nominated positions frequently arises. It is referred to as the ″plane position problem″ . The basic solution of the plane position problem is due to Burmester and is usually referred to by his name. The classical Burmester procedure has always had a frustrating defect; it produces spurious solutions. Recent work has produced a simple graphical technique for eliminating spurious solutions in the four position problem. It is the purpose of this paper to present a step-by-step graphical design procedure incorporating these developments.
Waldron, KJ 1976, 'GRAPHICAL SOLUTION OF THE BRANCH AND ORDER PROBLEMS OF LINKAGE SYNTHESIS FOR MULTIPLY SEPARATED POSITIONS.', American Society of Mechanical Engineers (Paper), no. 76 -DET-16.
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The material presented in this paper permits solution linkages to be located that are free of branch change and progress through design positions in a required order for all finitely separated and multiply separated four-bar Burmester synthesis problems. Since neither the order nor the branch problem applies to infinitesimally separated position problems, it can be said that all four-bar Burmester synthesis cases have been covered. Two examples are demonstrated to indicate the application of graphical solutions.
Waldron, KJ 1976, 'MANIPULATOR INTERFERENCE PROBLEM.', American Society of Mechanical Engineers (Paper), no. 76 -DET-68.
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Equations are developed for the distance between a manipulator link and an obstacle - both being enclosed in surfaces of general form. A linearized form of these equations is also developed for use in step-by-step path calculations. Simplification of the problem by enclosing links and obstacles in envelopes of simple geometry is discussed. A new method by which a link whose envelope contacts that of an obstacle can be guided around the obstacle is also developed.
Cady, J, Sorli, RM & Thornton, BS 1976, 'Performance evaluation of a batch processing computer network under different processing strategies', Proceedings of the 1976 ACM SIGMETRICS Conference on Computer Performance Modeling Measurement and Evaluation, SIGMETRICS 1976, pp. 265-271.
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In an Australian national batch-oriented computer network, processing strategies have been investigated, using simulation, to give guidelines for management of the work load and to provide direction for measurement of the performance of the system under actual conditions. The nature of the conflicting interactions between computer resource utilization and transmission line requirements has been studied to provide the basis for an economic analysis to determine the most cost-effective processing strategy.