scholarly journals Classification of apparent motion percepts based on temporal factors

2008 ◽  
Vol 8 (4) ◽  
pp. 31 ◽  
Author(s):  
Vebjørn Ekroll ◽  
Franz Faul ◽  
Jürgen Golz
Keyword(s):  
Apparent Motion ◽  
Temporal Factors

Temporal Factors for Vibrotactile Letter Reading

1995 ◽  
Vol 80 (3_suppl) ◽  
pp. 1069-1070 ◽  
Author(s):  
Yutaka Shimizu
Keyword(s):  
Apparent Motion ◽  
Apparent Movement ◽  
Temporal Parameters ◽  
Temporal Factors ◽  
Motion Mode

Using an apparent-motion mode, the psychophysical effect of apparent movement was introduced for tactile letter reading. This mode reduces time for the tracing mode. Five temporal parameters were examined for application to actual communication. 4 subjects recognized words composed of 3 to 7 Japanese letters in about 5 seconds.

scholarly journals On The Possibility of Identification of the Moving Celestial Objects Observed with the Space Astrometric Telescope

1998 ◽  
Vol 11 (1) ◽  
pp. 585-585
Author(s):  
O.P. Bykov
Keyword(s):  
Angular Velocity ◽  
Apparent Motion ◽  
Statistical Treatment ◽  
Moving Object ◽  
Heavenly Body ◽  
Angular Velocities ◽  
Celestial Bodies ◽  
Motion Parameters ◽  
Special Algorithm

In connection with the creation of the scientific grounds of the Russian Project named “Struve” Space Astrometric System, the main principles of classification and identification of any celestial moving object observed with this System were formulated and basic algorithms were elaborated. These algorithms are invariable for a short or long observational arc, for a known or unknown heavenly body and for an artificial or natural celestial object. For classification of observed celestial bodies the angular velocities of motion are used. These values are calculated from the statistical treatment of the 5 nearest spherical celestial body positions with a time intervalbetween them near 7 seconds. For an identification of well known sky objects ordinary procedure may be used by means of traditional ephemeris calculations. For an identification of unknown natural celestial bodies a special algorithm was developed. Ituses a calculated angular velocity of moving object from one scan to another close scan of observations. Then, having several accurate positions of fixed object during 5-10 hours per day, we can determine an initial elliptical object’s orbit by the Apparent Motion Parameters Method created at Pulkovo Observatory. It deals with a position of object, its angular velocity and acceleration, position’s angle and a curvature of trajectory on a short observational arc. These last four quantities are named the Apparent Motion Parameters. In spite of a preliminary character of the AMP-method orbits we can identify an observed object through a large interval of time, for example over 2-4 months after orbit determination. In this problem the observed and calculated angular velocities of the object’s motion are very useful. They are new and important ephemeris parameters at the epoch of Space Telescope astrometric positional observations. Examples of simulations of orbit determinations will be presented.

A general classification of U-shaped dose-response relationships in toxicology and their mechanistic foundations

1998 ◽  
Vol 17 (7) ◽  
pp. 353-364 ◽  
Author(s):  
Edward J Calabrese ◽  
Linda A Baldwin
Keyword(s):  
Dose Response ◽  
A Priori ◽  
Dose Range ◽  
Biological Mechanisms ◽  
Direct Stimulation ◽  
General Classification ◽  
Wide Range ◽  
Temporal Factors ◽  
Relationship Of

The development of a comprehensive database of chemical hormetic responses (i.e., U-or inverted U-shaped dose-response relationships) using objective a priori study design, statistical and study replication criteria has recently been reported.1An assessment of this database reveals the existence of a wide range of hormetic dose-reponse relationships including those demonstrating a direct stimulation or an overcompensation response to a disruption of homeostasis. These two broad types of hormetic responses are affected by temporal factors and display unique patterns of dose-range stimulation, magnitude of stimulatory response and relationship of the maximum stimulatory response to the NOAEL. A general classification of U-shaped dose-response relationships is proposed to provide a more organized framework to evaluate the highly distinctive and diverse hormetic responses within the context of establishing underlying biological mechanisms and exploring risk assessment implications.

Note on the spectral classification of carbon stars in the photographic infrared region

1966 ◽  
Vol 24 ◽  
pp. 21-23
Author(s):  
Y. Fujita
Keyword(s):  
Infrared Region ◽  
Spectral Classification ◽  
Carbon Stars

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.

Diagnostic Value of Electron Microscopy in Soft Tissue Tumors

1970 ◽  
Vol 28 ◽  
pp. 220-221
Author(s):  
Gerald Fine ◽  
Azorides R. Morales
Keyword(s):  
Cardiac Myxoma ◽  
Osteogenic Sarcoma ◽  
Diagnostic Value ◽  
Soft Tissue Tumors ◽  
Amelanotic Melanoma ◽  
Growth Patterns ◽  
Light Microscopic Level ◽  
Mesenchymal Tumors ◽  
Good Agreement

For years the separation of carcinoma and sarcoma and the subclassification of sarcomas has been based on the appearance of the tumor cells and their microscopic growth pattern and information derived from certain histochemical and special stains. Although this method of study has produced good agreement among pathologists in the separation of carcinoma from sarcoma, it has given less uniform results in the subclassification of sarcomas. There remain examples of neoplasms of different histogenesis, the classification of which is questionable because of similar cytologic and growth patterns at the light microscopic level; i.e. amelanotic melanoma versus carcinoma and occasionally sarcoma, sarcomas with an epithelial pattern of growth simulating carcinoma, histologically similar mesenchymal tumors of different histogenesis (histiocytoma versus rhabdomyosarcoma, lytic osteogenic sarcoma versus rhabdomyosarcoma), and myxomatous mesenchymal tumors of diverse histogenesis (myxoid rhabdo and liposarcomas, cardiac myxoma, myxoid neurofibroma, etc.)

Ultrastructure of mesotheliomas

1984 ◽  
Vol 42 ◽  
pp. 98-101
Author(s):  
Irving Dardick
Keyword(s):  
Electron Microscopy ◽  
Latent Period ◽  
Spindle Cell ◽  
Spindle Cell Sarcoma ◽  
Metastatic Adenocarcinoma ◽  
Cell Sarcoma ◽  
Cytological Features ◽  
Industrial Use ◽  
Degree Of Differentiation

With the extensive industrial use of asbestos in this century and the long latent period (20-50 years) between exposure and tumor presentation, the incidence of malignant mesothelioma is now increasing. Thus, surgical pathologists are more frequently faced with the dilemma of differentiating mesothelioma from metastatic adenocarcinoma and spindle-cell sarcoma involving serosal surfaces. Electron microscopy is amodality useful in clarifying this problem.In utilizing ultrastructural features in the diagnosis of mesothelioma, it is essential to appreciate that the classification of this tumor reflects a variety of morphologic forms of differing biologic behavior (Table 1). Furthermore, with the variable histology and degree of differentiation in mesotheliomas it might be expected that the ultrastructure of such tumors also reflects a range of cytological features. Such is the case.

Sign in / Sign up

Export Citation Format

Share Document