Showing papers on "Overhead (computing) published in 1972"
[...]
TL;DR: Wire-routing is to the engineer it represents a change in his way of doing things and, particularly in the synthesis area of wire-routed, has not produced results as good as manual solutions in many cases.
Abstract: It is also an area of considerable controversy. To management it represents an overhead in terms of software development and computer execution costs, an overhead whose return is sometimes obscured. To the engineer it represents a change in his way of doing things and, particularly in the synthesis area of wire-routing, has not produced results as good as manual solutions in many cases.
50 citations
Patent•
28 Jul 1972
TL;DR: An attachment for a conventional, surface mounted, overhead door control incorporating electrically actuated provision for holding the door open to any desired degree, but defeatable by manual pressure or by deenergization of the electric circuitry as mentioned in this paper.
Abstract: An attachment for a conventional, surface mounted, overhead door control incorporating electrically actuated provision for holding the door open to any desired degree, but defeatable by manual pressure or by deenergization of the electric circuitry.
30 citations
TL;DR: The solution, a block multiplexer channel and sector addressing in devices, which resulted in more efficient channel utilization and reduced programming overhead.
Abstract: System dependence on channel and direct access device architecture was addressed with the introduction of System/370. Discussed are the alternatives to this problem and their evaluation by a channel architecture program simulator.
Also presented is the solution, a block multiplexer channel and sector addressing in devices, which resulted in more efficient channel utilization and reduced programming overhead.
23 citations
23 citations
TL;DR: In this paper, an electrogeometric model is used to evaluate the effectiveness of overhead skywire and tower networks in shielding substation equipment from direct lightning strokes. Monte Carlo techniques are used to simulate the service performance of shielding designs.
Abstract: An electrogeometric model is utilized to evaluate the effectiveness of overhead skywire and tower networks in shielding substation equipment from direct lightning strokes. Monte Carlo techniques are used to simulate the service performance of shielding designs. An evaluation of the sensitivity of the technique to uncertainties in the design parameters is made.
21 citations
TL;DR: The overhead involved in the real-time multiprocessor execution of parallel-processable segments of a sequential program is investigated and a technique is developed to efficiently interpret this table in a system in which a number of identical processors share a common memory.
Abstract: The overhead involved in the real-time multiprocessor execution of parallel-processable segments of a sequential program is investigated. The execution follows a preprocessing phase in which the source program is analyzed and the parallel-processable segments are recognized. A number of representations of a parallel-processable program are possible. A table representation is used, and a technique is developed to efficiently interpret this table in a system in which a number of identical processors share a common memory.
20 citations
Patent•
21 Sep 1972
TL;DR: In this article, a coal cutting tool with an impact hammer and a carriage mounted on overhead rails is described. Means are provided for moving the articulated arm and hammer transversely, forwardly, upwardly and downwardly.
Abstract: A handling device such as a coal cutting tool in which a carriage is mounted on overhead rails for movement therealong and supports a depending articulated arm arrangement to which can be secured a tool such as an impact hammer. Means is provided for moving the articulated arm and hammer transversely, forwardly, upwardly and downwardly.
16 citations
01 Jan 1972
TL;DR: The chapter presents a study in which it was observed that if the data available were broken up into several subsets, and if the regression model was applied to each subset, then the estimates of overhead per event of each type varied from one subset to the other far more drastically than expectations based on the standard regression model.
Abstract: Publisher Summary An important factor in the evaluation of system performance is the overhead incurred by the system in performing its various functions. In the case of a time-sharing computer system, the overhead is measured in terms of CPU time consumed by the operating system. This chapter discusses the relation between the total observed overhead to the various specific functions performed by CP-67 system. The chapter presents a study in which it was observed that if the data available were broken up into several subsets, and if the regression model was applied to each subset, then the estimates of overhead per event of each type varied from one subset to the other far more drastically than expectations based on the standard regression model.
11 citations
Journal Article•
4 citations
Patent•
01 Dec 1972
TL;DR: In this paper, a rotatable upper support for turning machines is proposed, which has an upstanding turning tool carrier, to which turning tools are interchangeably fastenable and can be changed over at will for normal or overhead turning.
Abstract: This invention relates to a rotatable upper support for turning machines, which has an upstanding turning tool carrier, to which turning tools are interchangeably fastenable and can be changed over at will for normal or overhead turning.
2 citations
Journal Article•
TL;DR: The art of programming currently falls much closer to the former than the latter as discussed by the authors, but this situation is likely to change considerably in the next decade, and the following remarks state (perhaps overstate) the reasons for this belief.
Abstract: Creative endeavour varies greatly in the amount of overhead (i.e. money, manpower and organization) associated with a project which calls for a given amount of creative work. At one extreme is the activity of an aircraft designer, at the other that of a poet. The art of programming currently falls much closer to the former than the latter. I believe, however, that this situation is likely to change considerably in the next decade. The following remarks state (perhaps overstate) the reasons for this belief.