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Results 301 - 331 of 331
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Anstis S M - - 1980
When two similar pictures, overlapping but slightly displaced, were projected on a screen in alternation, apparent movement could be seen. How similar must successive pictures be to give apparent movement? This is the 'correspondence problem'. Manipulations of the local and global correspondences between pictures included motion phenomena such as reversed ...
O'Connor J - - 1980
Passage retrieval (already operational for lawyers) has advantages in output form over reference retrieval and is economically feasible. Previous experiments in passage retrieval for scientists have demonstrated recall and false retrieval rates as good or better than those of present reference retrieval services. The present experiment involved a greater variety ...
Dixon N F - - 1980
Subjects were presented with a film and its soundtrack through apparatus which enabled asynchrony between picture and sound to be increased. It was found that asynchrony is more easily detected when sound precedes picture, and for a hammer hitting a peg than for someone speaking. These preliminary results suggest that ...
Schuurkes J A - - 1979
Seven strain gage force transducers were sutured in line to the stomach of an anesthetized dog. Quantification of tonic acitivity and of phasic activity (amplitude, frequency and propagation velocity) on 7 locations from fundus to pylorus resulted in an overall picture of gastric motor activity. Pentagastrin (dose-response curve, 1--8192 ng/kg, ...
Mertz L N - - 1979
A speckle processing prescription is described that should yield diffraction-limited performance for large telescopes in spite of atmospheric turbulence and at light levels as low as 100 photons/sec in the picture. The prescription involves rearranging the spatial frequency components of running glimpses of the scene according to the complex information ...
Philpott D E - - 1979
Research on retinal circulation during space flight required the development of a simple technique to provide self monitoring of blood vessel changes in the fundus without the use of mydriatics. A Kowa RC-2 fundus camera was modified for self-photography by the use of a bite plate for positioning and cross ...
Hagen M A - - 1978
The purpose of the present experiment was to test the hypothesis that flat surface information for the plane of projection is the essential difference between ordinary and pictorial perception. Adults were asked to make relative size judgments of pairs of squares and triangles placed and pictured at various distances. The ...
Rosenzweig S - - 1977
Projective and semiprojective techniques are both tools and tests. A schema for assessing the validity of projective devices is proposed: (1) Primary, consisting of (a) construct validity i.e., the soundness of the techniques vis-a-vis its underlying concepts; and (b) criterion-related validity, i.e., the concordance between tool results and specified external ...
Leestma J E - - 1977
Using organized nervous system tissue cultures of embryonic mouse spinal cord, time-lapse motion pictures of intra-axonal particle movements were made using Nomarski optics. The paths of 272 particles were followed and analyzed using digital computer methods. Particles had a bidirectional saltatory motility with net anterograde and retrograde velocities which were ...
Hagen M A - - 1976
In four experiments, pictures varying in degree of perspective convergence from linear to parallel were observed under the following conditions: at an arbitrary station point, at correct station points, and with unconstrained view. Adults were asked to rank the pictures from the most to least natural and realistic-looking picture or ...
Lewis M C - - 1975
The present study examined the saliency of size, movement, and human content variables in visual selective attention. Ss named stimuli present in motion pictures of real world scenes or in animated cartoon controls during a 15-sec. exposure period. Regardless of the type of presentation that they saw, Ss tended to ...
Friedman S L - - 1975
The power of various pictorial movement cues in eliciting a reading of movement was studied to determine the relationship between the ease with which a picture is interpreted and the degree to which the picture retains the structure of reality. Movement was indicated in 2 ways: pictorial conventions indicated movement ...
Colletti V - - 1975
Changes in the tympanogram shape in the frequency range from 200 to 2000 Hz have been investigated. The tympanogram undergoes, as the probe tone frequency rises, characteristic morphologic modifications which are consistently observed both in normals and in some middle ear disorders. The only exception to this regular behavior is ...
Rudek W T - - 1975
The mechanism of ring constriction of a nematophagous fungus has been studied in vitro. The process of ring constriction in vivo normally requires less than one second. However, precise observations of the mechanism are difficult due to this rapidity, as well as the obstruction of the ring by the nematode. ...
Holinger P H - - 1975
Equipment is described for mirror and open tube direct laryngoscopic photography. It consists of specially constructed reflex camera systems that provide adequate exposure and depth of the desired field, sharpness of focus, correct color and effective composition for meaningful illustrations. The separate cameras for still and motion pictures consist of ...
Rodrigo J - - 1975
The intraganglionic laminar endings in the esophagus of the cat and the rhesus monkey show absolute equivalence between the results in both species from the morphological standpoint. The different types of apparatus found are described, with their location in the esophagus and their percentage distribution in relation to the different ...
Holinger P A - - 1975
Equipment is described for mirror and open tube direct laryngoscopic photography. It consists of specially constructed reflex camera systems that provide adequate exposure and depth of the desired field, sharpness of focus, correct color, and effective composition for meaningful illustrations. The separate cameras for still and motion pictures consist of ...
Murray B C - - 1974
The Mariner 10 television camieras imaged the planet Venus in the visible and near ultraviolet for a period of 8 days at resolutions ranging from 100 meters to 130 kilometers. Tle general pattern of the atmospheric circulation in the upper tropospheric/lower stratospheric region is displayed in the pictures. Atmospheric flow ...
Kurtz R L - - 1973
A new holographic technique has been developed that allows the resolution of front surface detail to be holographically recorded from a scene having a relatively large total motion during the exposure, i.e., the total motion of the scene during the exposure is large, relative to the allowed path length change ...
Meyerhofer D - - 1973
Novel kinds of rear-projection viewing screens are described. The light incident on each part of the screen is deflected and scattered by a prescribed amount, so that the picture presented to the viewer is optimized. In addition, the amount of light needed can be minimized. The screens are. produced in ...
Sandra D - - 1999
Two experiments are reported in which the determinants of spelling errors on homophonous verb forms in Dutch were studied. Both experiments indicated that errors were determined by the frequency relationship between the two homophonous forms and the distance between the verb and the word determining its spelling. We propose an ...
Laws D R - - 1969
Four of seven human male subjects developed full penile erections when exposed to erotically stimulating motion pictures. Changes in penile size were detected by a mercury strain gauge transducer and automatically recorded on a continuous paper record. When instructed to inhibit penile erection in the presence of such effective stimulus ...
Groves B R - - 1967
A motion picture of the electromagnetic field pattern of a prolate spheroid antenna was completely produced by an IBM 7094 computer and an SC 4020 microfilm plotter. The technique of illustrating complex mathematical subjects by means of computer pictures should lead to better understanding in electrical engineering.
Arking A - - 1964
Television pictures from the Tiros III satellite have been analyzed on a computer to give the latitudinal distribution of cloud cover during the summer of 1961. The results, which will be useful in studying the heat balance of the atmosphere and in the determination of vertical motion, show good agreement ...
ARCHER G T - - 1963
Horse eosinophil function has been studied in vitro by means of phase contrast cinemicrophotography. Locomotion of horse eosinophils was inhibited by serum factors reacting with glass surfaces. Under appropriate conditions which eliminated this inhibitory effect, eosinophils moved about and ingested some particles as rapidly as did neutrophils. Eosinophils were attracted ...
Wilson R R - - 1961
Summarizing, one can say that the construction of ultrahigh-energy accelerators will be justifiable even at presently predictable costs. There is little doubt that eventually physicists will push into the domain of superintensity as well as that of superenergy. If they do this, it will be because the information that will ...
Miller R D - - 1959
Light-weight, battery-operated timers were built and coupled to 16-mm motion-picture cameras having apertures controlled by photoelectric cells. The cameras were placed adjacent to Emmons Glacier on Mount Rainier. The film obtained confirms the view that exterior time-lapse photography can be applied to the study of slow-acting geologic processes.
Mackay R S - - 1959
Methods for emphasizing the moving parts of a scene. By photographic or electronic means, a past image can be subtracted from the present one to emphasize the moving parts of a motion picture scene. Rhythms and patterns of motion become more noticeable, and changes in velocity can give an impression ...
Curran D - - 1934
The study is based upon 103 cases, which have been observed at either the Phipps Psychiatric Clinic or the Maudsley Hospital; twenty-seven different aetiological agents are represented. The following questions are raised:-(1) Whether there is evidence that different aetiological agents produce specific or even characteristic delirious states. (2) In what ...
Wyckoff R W - - 1934
Using a micro motion picture technique for making records, studies covering several thousand hours of observation have been made of the growth of a number of bacteria. On the basis of these experiments a discussion is offered of bacterial division and its influence on gross colony appearance, of different kinds ...
Navez A E - - 1932
An automatic photographic recording apparatus is described. It uses plates sensitized to the red end of the spectrum for recording movements of organs of plants which cannot be photographed in white light. It enables one to obtain two types of pictures: 1. A "standing plate" picture where the successive positions ...
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