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21.
Christopher Durugbo Ashutosh Tiwari Jeffrey R. Alcock 《International Journal of Information Management》2013
Modelling is a classic approach to understanding complex problems that can be achieved diagrammatically to visualise concepts, and mathematically to analyse attributes of concepts. An organisation as a communicating entity is a made up of constructs in which people can have access to information and speak to each other. Modelling information flow for organisations is a challenging task that enables analysts and managers to better understand how to: organise and coordinate processes, eliminate redundant information flows and processes, minimise the duplication of information and manage the sharing of intra- and inter-organisational information. 相似文献
23.
This paper discusses variation in reasoning strategies among expert mathematicians, with a particular focus on the degree
to which they use examples to reason about general conjectures. We first discuss literature on the use of examples in understanding
and reasoning about abstract mathematics, relating this to a conceptualisation of syntactic and semantic reasoning strategies
relative to a representation system of proof. We then use this conceptualisation as a basis for contrasting the behaviour
of two successful mathematics research students whilst they evaluated and proved number theory conjectures. We observe that
the students exhibited strikingly different degrees of example use, and argue that previously observed individual differences
in reasoning strategies may exist at the expert level. We conclude by discussing implications for pedagogy and for future
research.
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24.
Alison Alcock Adam Hunter Nicholas Brown 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):129-140
The ability to determine a specific location on a football (soccer) pitch from television footage would provide a cost-effective method of obtaining competition-specific information on many professional and international teams. This study presents the accuracy and reliability of a new method of calculating ball location from simulated television coverage and known pitch markings. The coordinates of 99 markers of known location on a football pitch were digitized from video. An intersection point was determined from the equations of two lines that form pitch markings and the relationship from this point to other known pitch coordinates was calculated using a curve-fitting based method. Average error between known and reconstructed measures was 0.21 m for pitch width and 0.11 m for pitch length from a view simulating television coverage. Inter- and intra-rater reliability analyses showed researchers could consistently reconstruct pitch locations to within less than half a metre. The accuracy and reliability of this method will be sufficient for most practical uses in an applied sport environment, although the level of accuracy required will depend on the specific application. This method could be applied to other sports to determine specific locations on a pitch or court or to improve current competition analysis systems. 相似文献