Control of Fixation Duration and Saccade Direction during Search

Perception ◽  
1996 ◽  
Vol 25 (1_suppl) ◽  
pp. 72-72
Author(s):  
I T C Hooge ◽  
C J Erkelens
Keyword(s):  
Eye Movements ◽  
Fixation Duration ◽  
Direct Control ◽  
Analysis Process ◽  
Saccade Direction ◽  
The Right ◽  
Direction Information ◽  
Saccade Preparation ◽  
Circle Diameter ◽  
Made In

To investigate the interaction between saccade preparation and foveal analysis on multi-fixation search, we designed an experiment in which the result of the foveal analysis is relevant for programming the direction of the next saccade. We examined whether fixation duration is adjusted to the duration of the analysis process or not. Subjects were asked to find a circle (diameter 2.1 deg) among 35 circles (gap size 0.3 deg, diameter 2.1 deg) that were placed on an invisible hexagonal grid (35 deg × 35 deg). Eye movements of the right eye were measured. The gaps of the circles indicated the direction in which the circle could be found. Subjects were instructed to make eye movements in the direction that was indicated by the gap of the fixated circle. The proportion of eye movements made in the indicated directions ranged from 0.54 to 0.72 (0.25 is chance level). Thus direction information is indeed, but improperly, used for the programming of eye movements. Durations of fixations preceding eye movements made in non-indicated directions were smaller than durations of fixations preceding eye movements made in indicated directions. From these results we conclude that saccade preparation only uses the result of the analysis if it is available in time and that there is no direct control of fixation duration by a mechanism that monitors the analysis process.

Eye Movements in Curve Negotiation

1977 ◽  
Vol 19 (1) ◽  
pp. 63-71 ◽  
Author(s):  
David Shinar ◽  
Edward D. Mcdowell ◽  
Thomas H. Rockwell
Keyword(s):  
Eye Movements ◽  
Fixation Duration ◽  
Peripheral Vision ◽  
Search Behavior ◽  
The Road ◽  
Rural Road ◽  
Focus Of Expansion ◽  
Search Patterns ◽  
Road Geometry ◽  
The Right

Eye movements and fixations of five drivers were recorded and superimposed on a videotaped recording of the dynamic visual scene as they drove on a two-lane rural road. The results showed that (1) on curved roads, the fixation pattern follows the road geometry, whereas on straight roads, the search behavior is less active, and most of the fixations are close to the focus of expansion. The results indicate that in driving through curves drivers direct foveal fixations to lateral placement cues rather than rely on peripheral vision; (2) the process of curve scanning begins in the approach zone prior to the curve itself, suggesting that perceptually the curve negotiating process precedes the curve by several seconds; (3) the search patterns on right and left curves are not symmetrical; visual excursions to the right on right curves are greater than eye movements to the left on left curves; and (4) fixation duration statistics may be related to accident rates on curves.

Cancellation and Termination of Assignment Contract of Patrimonial Rights of the Author

2019 ◽  
Vol 25 (2) ◽  
pp. 197-201
Author(s):  
Tudor-Vlad Sfârlog
Keyword(s):  
Scientific Research ◽  
Legal Provisions ◽  
The Right ◽  
Made In

Abstract The present study offers the doctrine of the right of intellectual creation new perspectives on the study of the institution of termination of the assignment contract for the patrimonial rights resulting from the intellectual creation. We believe that the present study is rich in doctrinal contributions, formulating new theses and opening the prospect for new perspectives of scientific research. Last but not least, we appreciate that the proposals made in the present study contribute not only to the activity of opinionated in the field, but also to the work of practitioners and direct beneficiaries of the legal provisions on the assignment of patrimonial rights of authors.

Visual asymmetries during face encoding Increased dwell time and fixations in the upper and left hemifields

2018 ◽  
Author(s):  
Fatima Maria Felisberti
Keyword(s):  
Face Recognition ◽  
Eye Movements ◽  
Visual Field ◽  
Face Processing ◽  
Dwell Time ◽  
The Other ◽  
Environmental Cues ◽  
Reading Habits ◽  
The Right

Visual field asymmetries (VFA) in the encoding of groups rather than individual faces has been rarely investigated. Here, eye movements (dwell time (DT) and fixations (Fix)) were recorded during the encoding of three groups of four faces tagged with cheating, cooperative, or neutral behaviours. Faces in each of the three groups were placed in the upper left (UL), upper right (UR), lower left (LL), or lower right (LR) quadrants. Face recognition was equally high in the three groups. In contrast, the proportion of DT and Fix were higher for faces in the left than the right hemifield and in the upper rather than the lower hemifield. The overall time spent looking at the UL was higher than in the other quadrants. The findings are relevant to the understanding of VFA in face processing, especially groups of faces, and might be linked to environmental cues and/or reading habits.

The "Right to Die": A Case Study in American Lawmaking*

1996 ◽  
Vol 3 (1) ◽  
pp. 49-74
Author(s):  
Alan Meisel
Keyword(s):  
Legal System ◽  
Right To Die ◽  
Judicial Process ◽  
Clinical Issue ◽  
The Press ◽  
American Law ◽  
American Legal System ◽  
The Right ◽  
Made In

AbstractIn the 20 years that have passed since the Karen Quinlan case exposed a simmering clinical issue to the light of day — more precisely, to the press and to judicial process — a consensus has developed in American law about how end-of-life decisionmaking should occur. To be sure, there are dissenting voices from this consensus, but they are often (though not always) about minor issues. By illustrating how this consensus has evolved, this paper explores how law is made in the American legal system and the roles that different legal and extra-legal institutions play in lawmaking.

Ship Design for Production—Some U.K. Experience

1988 ◽  
Vol 4 (01) ◽  
pp. 11-20
Author(s):  
George J. Bruce
Keyword(s):  
Spatial Analysis ◽  
Process Analysis ◽  
Computer Software ◽  
Ship Design ◽  
Significant Progress ◽  
Production Engineering ◽  
Analysis Process ◽  
Trained Personnel ◽  
Successful Establishment ◽  
Made In

Ship design for production is widely accepted in principle. Its successful establishment depends on the shipbuilders having a well-defined shipbuilding policy, available to the designer, the establishment of a realistic and agreed schedule, and adequately trained personnel. Key production engineering techniques include spatial analysis, process analysis, and standardization. The advent of powerful and inexpensive computer software has created new opportunities for producibility to be incorporated from the earliest stages of the design process. Significant progress has been made in recent years in the development of design methods and in their application

Summary judgment — Quo vadis?

2021 ◽  
Vol 138 (1) ◽  
pp. 88-114
Author(s):  
Thino Bekker
Keyword(s):  
South African ◽  
Historical Development ◽  
Access To Justice ◽  
High Court ◽  
The Core ◽  
Golden Opportunity ◽  
Quo Vadis ◽  
The Right ◽  
Summary Judgment ◽  
Made In

The summary judgment procedure in South African law provides for a speedy judgment in favour of a deserving plaintiff where it can be shown that the defendant does not have a triable defence. In 2019 the Rules Board made certain drastic amendments to the procedure of summary judgment in the high court. In this article the historical development of the procedure of summary judgment will be discussed, and the new amendments to rule 32 of the Uniform Rules of Court critically evaluated. It will be argued that the amendments to rule 32 were unnecessary and that it may diminish the right to access to justice in civil disputes. It will, however, also be argued that there are some merits in the critique raised by the Rules Board in relation to rule 32 and that the Rules Board missed a golden opportunity to overhaul the entire summary judgment procedure in a more sensible manner and in line with the core constitutional values of s 34 of the Constitution. It will be argued that rule 32 should be replaced in its entirety by a new, more streamlined procedure, and some recommendations for legal reform will be made in this regard.

scholarly journals XXXIV. On the transit of Venus in 1769. To the Right Honourable The Earl of Morton, President to the Council and Fellows of the Royal Society, this discourse is, with all humility, inscribed, by their humble servant, Thomas Hornsby

1765 ◽  
Vol 55 ◽  
pp. 326-344 ◽  
Keyword(s):  
Royal Society ◽  
The Sun ◽  
The Real ◽  
The Earth ◽  
Theory Of Gravity ◽  
The Right ◽  
Made In

The observations of the late transit of Venus, though made with all possible care and accuracy, have not enabled us to determine with certainty the real quantity of the sun's parallax; since, by a comparison of the observations made in several parts of the globe, the sun's parallax is not less than 8" 1/2, nor does it seem to exceed 10". From the labours of those gentlemen, who have attempted to deduce this quantity from the theory of gravity, it should seem that the earth performs its annual revolution round the sun at a greater distance than is generally imagined: since Mr. Professor Stewart has determined the sun's parallax to be only 6', 9, and Mr. Mayer, the late celebrated Professor at Gottingen, who hath brought the lunar tables to a degree of perfection almost unexpected, is of opinion that it cannot exceed 8".

Development of Bionic Design Concepts for Structure Optimisation of Forming Tools According to Production and Stress Constraints

2011 ◽  
Vol 473 ◽  
pp. 209-216
Author(s):  
Eugen Oswald ◽  
Mathias Liewald ◽  
Oliver Stephan
Keyword(s):  
Automotive Industry ◽  
Stress Constraints ◽  
Bionic Design ◽  
Design Concepts ◽  
Special Cases ◽  
Current Design ◽  
The Right ◽  
Forming Tools ◽  
Current Standards ◽  
Made In

In the automotive industry, current design and dimensioning of forming tools and bearing tool components occurs according to guidelines. Possible interactions between arising loads as well as dimensioning are empirically estimated. Simulative computations, which are based on CAE-methods, are only realized in special cases. Therefore, most often current standards lead to oversized tools. In consequence, new studies based on CAE-analyses are supposed to investigate new possibilities to design forming tools and components optimized in their structure corresponding to the right distribution of forces and stress. This is made in order to increase reliability during the manufacturing process, as well as the tools’ stiffness and contribute to decrease of investment costs.

scholarly journals Studies on Amphibian Metamorphosis

1939 ◽  
Vol 16 (1) ◽  
pp. 96-120
Author(s):  
O. M. HELFF
Keyword(s):  
Great Majority ◽  
Gill Tissue ◽  
Shoulder Girdle ◽  
The Other ◽  
Histological Structure ◽  
Serial Sections ◽  
Stages Of Development ◽  
Amphibian Metamorphosis ◽  
The Right ◽  
Made In

(1) Opercular integument, homoplastically transplanted to the back and side of R. temporaria larvae, underwent a process of partial degeneration. The histolysis was not confined to any localized region of the transplant. (2) Autoplastic transplantation of opercular integument to the back and side produced a variety of results. Normal histological structure was maintained in certain transplants, generalized degeneration was observed in others, while in several instances localized histolysis resulting in perforation formation occurred. (3) Homoplastic and autoplastic transplantation of back and side skin to the opercular region resulted in histolysis and perforation formation in such transplants during larval involution. (4) The right forelimbs (in early stages of development) with attached portions of the shoulder girdle were extirpated in R. temporaria and B. bufo. During subsequent metamorphosis, normal opercular histolysis followed by perforation formation in many cases was observed. In most instances, serial sections of the peribranchial cavity revealed the absence of cutaneous glands. (5) Extirpation of the right forelimb only was made in the same two species. Opercular histolysis subsequently occurred in all instances, resulting in perforation formation in the great majority of cases during larval involution. In many of the B. bufo animals two separate perforations developed, one filled with limb stump and the other with gill tissue. (6) It is concluded that in R. temporaria a particular area of the operculum may in some individuals possess self-degenerative potentialities conducive to histolysis and perforation formation during metamorphosis. In both R. temporaria and B. bufo histolytic influences emanating from the atrophying gill tissue and the cutaneous glands of the forelimb are probably also responsible for opercular histolysis and perforation formation. Limb pressure must be considered a supplemental factor. (7) The results are discussed in general and attention called to the fact that opercular histolysis and perforation formation are "doubly assured" in some species and possibly even "triply assured" in others. Emphasis is placed on the evidently wide divergence between species as regards the particular combination of factors responsible for opercular histolysis and perforation formation. Apparently, no one explanation can serve to account for the phenomenon as it occurs in various species of anurans.

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