منابع مشابه
Invasive assessment of myocardial bridges.
It has been recognised for over 200 years that epicardial coronary arteries may be crossed by muscular bands for limited segments of their courses. The term myocardial bridge was first employed in 1961 in a case report describing angiographic systolic narrowing. Opinion remains divided as to whether myocardial bridges have pathological consequences or are merely epiphenomena. The clinical conse...
متن کاملOn Some Conjectures of Griggs and Graffiti
We discuss a conjecture of J. R. Griggs relating the maximum number of leaves in a spanning tree of a simple, connected graph to the order and independence number of the graph. We prove a generalization of this conjecture made by the computer program Graffiti, and discuss other similar conjectures, including several generalizations of the theorem that the independence number of a simple, connec...
متن کاملWhen Graffiti Brings Order
Most researchers use Petri nets as a formal notation with mathematically defined semantics. Their graphical part is usually only seen as a notation, that does not carry semantics. Contrary to this tradition, we show in this article that, when created by a human, there is inherent semantics in the positions of places, transitions and arcs. We propose to use the full definition of Petri nets: whe...
متن کاملRecognition of Graffiti Tags
Graffiti tagging, the inscription of an individual graffiti writer’s unique mark in public space, is considered to be an antisocial behaviour and is a criminal offense. Due to the costs involved in the removal of graffiti tags it would be desirable to deter tagging. A searchable database of graffiti images could be an integral part of the policing system aimed at deterring graffiti vandalism. I...
متن کاملThe Immediate Usability of Graffiti
We present four empirical measures of the immediate usability of Graffiti, a character recognizer for pen-based computers. Since speed is fully controlled by the user, we measured the accuracy attainable after minimal exposure. The first measure, 79%, is the inherent accuracy, or the extent to which Graffiti strokes match letters in the Roman alphabet. The other three measures were obtained in ...
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ژورنال
عنوان ژورنال: MOJ Civil Engineering
سال: 2017
ISSN: 2572-8520
DOI: 10.15406/mojce.2017.03.00062