Showing papers on "Object (computer science) published in 1970"

Statistical methods for research workers

Abstract: The prime object of this book is to put into the hands of research workers, and especially of biologists, the means of applying statistical tests accurately to numerical data accumulated in their own laboratories or available in the literature.

Regular Expression Search Algorithm

Abstract: A method for locating specific character strings embedded in character text is described and an implementation of this method in the form of a compiler is discussed. The compiler accepts a regular expression as source language and produces an IBM 7094 program as object language. The object program then accepts the text to be searched as input and produces a signal every time an embedded string in the text matches the given regular expression. Examples, problems, and solutions are also presented.

On Inferences from Inconsistent Premises

Abstract: The main object of this paper is to provide the logical machinery needed for a viable basis for talking of the ‘consequences’, the ‘content’, or of ‘equivalences’ between inconsistent sets of premisses.

Electronically-generated perspective images

Abstract: A method and system for electronically generating and displaying shaded perspective images of three-dimensional objects on a two-dimensional view plane by providing electrical signals representative of the surfaces of an object and identifying and utilizing only the signals representing visible surfaces to display the perspective images. More specifically, electrical signals defining surfaces of a three-dimensional object are converted to define the projections of the surfaces onto a two-dimensional image or view plane defined by a raster scan display device. The converted signals defining surfaces which are to be displayed, depending on the desired orientation of the object, are determined by comparing the relative depths of segments of the surfaces along each scan line of the display and selectively subdividing the scan lines according to the visual characteristics of the segments when necessary. Signals defining the visible segments are then utilized to control the intensity of the display. The visibility determination and subsequent displaying of the visible surfaces are provided at a real time rate, i.e., at the scanning rate of the display which may be on the order of 1/30 second.

Credit card system having means for sensing if object is living

Abstract: A system for identifying the user of a credit card or the like, wherein a predetermined portion of the living body, such as a finger or a hand, of the user of a card is used for identification of the user. The system is provided with means for checking whether the object presented by the user of a card is the predetermined portion of the living body of the user so that any fraudulent use of an object simulating the portion of a human body can be prevented.

Machine implemented method for positioning and inspecting an object

Abstract: The object it is desired to position has areas thereon whose peripheral edges are boundries between light and dark regions. For example, the areas may be metal electrodes which appear light and are located on a dark substrate. This object is placed beneath a light-sensing element such as an optical fiber. The object is then scanned in different directions under computer control, by producing relative movement between it and the light-sensing element to ascertain the shapes of a number of these areas, and the position within each such area of a characteristic point such as the center of gravity or the center of one particular edge, of each such area. The coordinates of these points are compared with reference coordinates previously stored in the computer memory for calculating the translational and/or the rotational movement required to center the object and for imparting this movement to the object.

Tool-level indicator structure

Abstract: A tool for working on an object positioned at an angle relative to a reference plane, sand tool including a level indicator to indicate the angular relationship of said tool to said object and said reference plane.

Real time interferometry contour mapping system

Abstract: A real time holographic interferometer for measuring height variations or contours on the surface of an object is disclosed. Two interference patterns are formed, one of an object whose surface is to be mapped and one of a reference plane or other standard surface using holographic techniques. The interference patterns form visual inputs to a television camera which converts them into electrical signals. These electrical signals are combined to produce an output which contains information relative to the height variations or altitude contours of the object and the height contour information is displayed on an appropriate display device.

Method of programming a controller

Abstract: A method of programming a controller for an oscillating spray painter to paint an object that moves past the sprayer. A scale drawing of the object is superimposed on a developed layout of the path of the sprayer. A control member for the controller is divided into sections corresponding to the strokes of the sprayer and the points where painting should begin and stop during each stroke of the sprayer are determined from the scale drawing and then correspondingly placed on the control member.

Mechanical connector system including bifurcate hinged connector means

Abstract: A connector system for securing a first physical object to a second is based primarily on a one-piece bifurcate connector having a first or head axis and a second or leg axis generally transverse to the first. The connector per se comprises a plastic hinged loop element flexible enough to open and pass astride the first object, and bifurcate leg elements in continuation of the loop, adapted to be closed together along the second axis to engage the second object. Plural cooperating notches, grooves, or cutouts are formed between the legs to engage between them pin, key or other detent means projecting from the second object and preferably parallel to the first axis. Annular grooves or other surfaces of revolution also may be formed inside or outside the legs, as closed, to permit rotation of the second object about its own axis.

The semiautomatic Wisconsin general test apparatus

Abstract: A semiautomatic version of the Wisconsin General Test Apparatus is described along with circuitry. Comparison data are provided for the semiautomatic and manual WGTA obtained under comparable procedures and conditions. Response latencies are given for go/no-go object discrimination problems and subsequent retention tests.

Scanning system for yielding a three-dimensional display

Abstract: A system for scanning an object and obtaining a threedimensional display of the features of the object is described. Internal discontinuities within the scanned object can be detected and visually displayed. The system includes a transmitting element which transmits energy to the object under investigation. The energy transmitted to the object can be of a form which will pass through the object, for example, ultrasonic waves to obtain a view of internal features. Energy passing through the object is reflected back to the surface through which it entered the object by discontinuities within the object. The reflected waves are received by the scanning device where they are divided into separate channels. The two channels individually process the received signals which are then used to actuate a read-out device such as an oscilloscope. The visual read-out from the oscilloscope is then photographed by use of a stereo camera and a three-dimensional picture is obtained.

Some formulae for Appell functions

Abstract: 1. Introduction. The object of this paper is to obtain some generating functions for Appell functions with the help of fractional derivatives. The results are general in character and include as particular cases some of the results given earlier by Mexiner (3) and the author (4, 5, 6).

System for inspecting and classifying objects such as screws, bolts and the like while in motion

Abstract: Inspection and grading system for threaded objects comprising sequential detection, measurement, and comparison of major and minor diametral values of a threaded object while in motion. Such values are determined along the pitch angle of the threaded object throughout its longitudinal length. Measurements are made cyclically as the object is guided through the detection zone. The measured values are evaluated e.g., by sequential comparison to computer stored values of a standard threaded object and accepted or rejected based on the selective discrimination level. The objects are counted and classified.

Pool ball rack

Abstract: A ball rack for use with pool or pocket billiard tables for locating the object balls in predetermined spread relation to one another on different areas of a pool table to facilitate locating the object balls for playing a new and unique pool game The rack has an elevated top wall provided with openings through which the balls are displaced downwardly onto the playing surface of the pool table and including resilient rings secured to the openings for engaging and accurately locating the balls on the pool table and before removal of the rack therefrom

Some aspects of the graphical calculation of phase diagrams

Abstract: The object of this paper is to draw attention to some aspects of the graphical calculation of phase diagrams that may be of educational value.

Press for use in the molding of parts

Abstract: A press for applying pressure to an object, typically a mold, moving through it includes cooperating rollers and back-up means to apply pressure to the object during the passage through the mold. A group of the rollers may be moved further away from the back-up means so that an object may be loaded in the press.

The evidence of language

Abstract: LANGUAGE AND HISTORY While it is difficult to establish a close relationship between language form and the racial or cultural characteristics of its speakers, an intimate relationship does exist between culture and language content. The study of language content needs no special justification, since the written records of antiquity are our most valuable source of information concerning the peoples and civilizations which form the object of historical investigation. But language as a formal structure, like the tools and institutions of a society, represents a kind of transmitted organism and as such falls into the category of data which can be ordered in typologically related sequences. Thus, for the historian, who is interested primarily in tracing interacting continuities, the study of the history and development of a language, apart from its use as a vehicle for oral and written traditions, provides useful and sometimes unique evidence of otherwise undiscernible ethnic and cultural affiliations. LANGUAGE CHANGE The evolution of a language through time is most conveniently described in terms of two distinct but related features: function and form. Limiting ourselves for the moment to spoken language, we may define the primary function of language as communication. It is virtually axiomatic that a language, in order to serve the communication needs of a given community effectively, must keep pace with cultural changes within that community. That one is static implies that the other is also static, a generally unlikely situation. The ever-changing communication needs of a community will thus be reflected in its language, and mainly in lexical content rather than in form. It is more or less irrelevant whether such changes are internal (evolutionary) or caused by some impetus from outside the community in question.

On the feasibility of voice input to an on-line computer processing system

Abstract: An on-line digital computer processing system is considered in which an ordinary telephone is the complete terminal device, input to the computer being provided as a sequence of spoken words, and output to the user being audio responses from the machine. The feasibility of implementing such a system with a FORTRAN-like algebraic compiler as the object processor is considered. Details of a specific word recognition program are given. This technique depends on three simplifying restrictions, namely, a “small” vocabulary set, “known” speakers, and a “moment of silence” between each input word. Experimental results are presented giving error rates for different experimental conditions as well as the machine resources required to accommodate several users at a time. The results show that at this time it is both economically and logically feasible to handle at least 40 users at a time with an IBM 360/65 computer.

Space division multiplexed holographic apparatus

Abstract: HOLOGRAPHIC APPARATUS INCLUDING A PLURALITY OF SPATIALLY COMPLEMENTARY SAMPLING MASKS FOR SPACE DIVISION MULTIPLEXING RESPECTIVE OBJECT SIGNALS IN SUCH A WAY THAT EACH RECORDING IS DISTRIBUTED THROUGHOUT SUBSTANTIALLY THE FULL AREA OF THE HOLOGRAPHIC STORAGE MEDIUM. INDIVIDUAL MASKS ARE USED FOR SUCCESSIVELY RECORDING THE VARIOUS OBJECTS AND THE MASK CORRESPONDING TO A PARTICULAR RECORDING IS USED IN PLAYBACK APPARATUS FOR PRODUCING RESPECTIVE IMAGES OF SAID OBJECTS.

Optimum Allocation of Personal Presence

Abstract: A person may give his attention directly by transporting himself from place to place, or vicariously by communicating over a wire with the object of his attention. A procedure is presented for combined allocation of these two kinds of personal presence. Allocation of a physician's time to direct diagnosis versus telediagnosis is an example.

Ultrasonic object detector

Abstract: An ultrasonic object detector system operating on the echoranging principle and including circuit adjustments which render the object detector system responsive to objects at a preselected distance. Additional circuit adjustments provide control of the depth of field sensitivity of the object detector system relative to the selected object distance as well as providing the capability of ''''locking-in'''' the object to prevent loss of object recognition.

Instrument for presenting an object to be viewed

Abstract: A device for presenting an article to be viewed, with an elongated support and means mounted thereon for holding and rotating the article. These means are actuated at distance and at will, without cutting the field of view.

Storage device for rollable objects

Abstract: A support is adapted to receive a rollable object in a normal position behind a stop. Means responsive to the application of rearward force to the object are provided behind the object. When a rearward force is applied to the object, the means impart sufficient forward motion to the object to permit the object to roll over the stop, at which point the object is readily retrievable.

Optical system for positional and angular orientation determining apparatus

Abstract: A SELECTIVELY OPERATIVE RELAY LENS IS PROVIDED IN AN OPTICAL SYSTEM WHICH IS PART OF APPARATUS THAT DETERMINES THE POSITIONAL AND ANGULAR ORIENTATION OF AN OBJECT WITH RESPECT TO A GIVEN REFERENCE SYSTEM. WHEN THE RELAY LENS IS INOPERATIVE, THE OPTICAL SYSTEM PROVIDES AN IMAGE THAT IS INDICATIVE OF THE POSITION OF THE OBJECT RELATIVE TO TWO PREDETERMINED REFERENCE AXES OF THE REFERENCE SYSTEM AND THE ANGULAR ORIENTATION OF THE OBJECT RELATIVE TO A THIRD REFERENCE AXIS OF THE SYSTEM, THE THREE REFERENCE AXES BEING MUTUALLY ORTHOGONAL WITH RESPECT TO EACH OTHER. WHEN THE RELAY LENS IS OPERATIVE, THE OPTICAL SYSTEM PROVIDES AN IMAGE WHICH IS INDICATIVE OF THE ANGULAR ORIENTATION OF THE OBJECT RELATIVE TO THE FIRST TWO MENTIONED REFERENCE AXES.