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A commonly used model that illustrates the relationship between biological, individual, community, and societal determinants is Whitehead and Dahlgren's model originally presented in 1991 and subsequently adapted by the CDC. [8]
Whitehead's Process and Reality [1] is perhaps his philosophical master work. The following is an attempt to provide an accessible outline of some of the main ideas in Whitehead's Process and Reality, based on the book itself, but guided by a general reading of secondary sources, especially I. Leclerc's Whitehead's Metaphysics
A quad chart is a form of technical documentation used to briefly describe an invention or other innovation through writing, illustration and/or photographs. [1] Such documents are described as "quad" charts because they are divided into four quadrants laid out on a landscape perspective.
Nassi-Shneiderman diagrams and Drakon-charts are an alternative notation for process flow. Common alternative names include: flow chart, process flowchart, functional flowchart, process map, process chart, functional process chart, business process model, process model, process flow diagram, work flow diagram, business flow diagram. The terms ...
One of the modern systems of plant taxonomy, the Dahlgren system was published by monocot specialist Rolf Dahlgren in 1975 [1] and revised in 1977, [2] and 1980. [3] However, he is best known for his two treatises on monocotyledons in 1982 [4] and revised in 1985. [5] His wife Gertrud Dahlgren continued the work after his death. [6]
Whitehead took as primitive the topological notion of "contact" between two regions, resulting in a primitive "connection relation" between events. Connection theory C is a first-order theory that distills the first 12 of Whitehead's 31 assumptions [ 9 ] into 6 axioms, C1-C6 . [ 10 ]
Lexis diagram showing the cohort of 2003-born persons in green, and the year 2005 in red. In demography a Lexis diagram (named after economist and social scientist Wilhelm Lexis) is a two dimensional diagram used to represent events (such as births or deaths) that occur to individuals belonging to different cohorts. Calendar time is usually ...
Trefoil knot without 3-fold symmetry being unknotted by one crossing switch. Whitehead link being unknotted by undoing one crossing. In the mathematical area of knot theory, the unknotting number of a knot is the minimum number of times the knot must be passed through itself (crossing switch) to untie it.