The Statistics of Collisions at Sea

Wylie, F. J.; Deacon, David

doi:10.1017/s0373463300018452

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, he became interested in collision avoidance, starting with a working paper to facilitate discussion of the problem at an ICAO Airworthiness Committee meeting ( Calvert, 1958a ). At the time, collision avoidance at sea and in the air was a fiercely debated topic of great interest given that there were 159 mid-air collisions in the period 1948–1957 in the United States alone ( Calvert, 1960 ; see Sharpey-Schafer, 1955 and Wylie & Deacon, 1963 for ship collision statistics). Several mathematical treatments of the problem were developed ( Calvert, 1958a ; Morrel, 1961 ; Sadler, 1957 ), 27 which led to the development of several systems for collision avoidance ( Calvert, 1960 , 1973 ; Hollingdale, 1961 ; Wylie, 1960 ), investigations of the human factors aspects of the problem (e.g., Broadbent, 1958 ) and discussion about changing the rules of procedure at sea ( Calvert, 1969 , 1971 ; Kemp, 1965 ; Kemp et al, 1965 ).…”

Section: Es Calvertmentioning

confidence: 99%

Optic Flow: A History

Niehorster

2021

i-Perception

View full text Add to dashboard Cite

The concept of optic flow, a global pattern of visual motion that is both caused by and signals self-motion, is canonically ascribed to James Gibson's 1950 book “ The Perception of the Visual World.” There have, however, been several other developments of this concept, chiefly by Gwilym Grindley and Edward Calvert. Based on rarely referenced scientific literature and archival research, this article describes the development of the concept of optic flow by the aforementioned authors and several others. The article furthermore presents the available evidence for interactions between these authors, focusing on whether parts of Gibson's proposal were derived from the work of Grindley or Calvert. While Grindley's work may have made Gibson aware of the geometrical facts of optic flow, Gibson's work is not derivative of Grindley's. It is furthermore shown that Gibson only learned of Calvert's work in 1956, almost a decade after Gibson first published his proposal. In conclusion, the development of the concept of optic flow presents an intriguing example of convergent thought in the progress of science.

show abstract

Section: Es Calvertmentioning

confidence: 99%

Optic Flow: A History

Niehorster

2021

i-Perception

View full text Add to dashboard Cite

show abstract

“…Fig. 8 shows the result of applying this analysis to published data (Wylie & Deacon, 1963, 1966Beattie, 1963). Conclusions on absolute trends are dependent on variation in the number of encounters, i.e.…”

Section: -64mentioning

confidence: 99%

Operational Research and Cost Benefit Analysis on Navigation with Particular Reference to Marine Accidents

Stratton¹,

Silver²

1970

J. Navigation

View full text Add to dashboard Cite

The objective of navigation is to ensure safe and economic operation of the craft and new trends and developments in navigation have to be judged against the return that they might be expected to bring in operating economics and reduction in accidents. Modern technology offers a wide range of fascinating possibilities, many of which will be discussed at this quadripartite meeting. The potential of these new trends and developments, however, cannot be judged just on the basis of the improvement they bring to the reckoning of position and course. This is but the starting point (Fig. 1) to a complex interaction between navigation, operator and the world at large. The operational navigation performance is determined by the interaction between the means of reckoning position and course, the operational situation and the human operator's interpretation of the operational situation in relation to such regulations, rules and procedures as have been established.

show abstract

The Statistics of Collisions at Sea

Cited by 2 publications

References 0 publications

Optic Flow: A History

Optic Flow: A History

Operational Research and Cost Benefit Analysis on Navigation with Particular Reference to Marine Accidents

Contact Info

Product

Resources

About