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Rigour (British English) or rigor (American English; see spelling differences) describes a condition of stiffness or strictness. [1] These constraints may be environmentally imposed, such as "the rigours of famine"; logically imposed, such as mathematical proofs which must maintain consistent answers; or socially imposed, such as the process of defining ethics and law.
Pragmatic validity in research looks to a different paradigms from more traditional, (post)positivistic research approaches. It tries to ameliorate problems associated with the rigour-relevance debate, and is applicable in all kinds of research streams.
Nysten's rule (1811) describes the sequential onset of rigor mortis in the various muscle groups. The basic sequence of the solidifying body begins from the head down the body, in the order: [1] Involuntary muscle first: Heart; Upper eyelids; Neck; Jaw; Face; Upper extremities; Muscles of the trunk; Lower extremities
Cadaveric spasm can be distinguished from rigor mortis as the former is a stronger stiffening of the muscles that cannot be easily undone, while rigor mortis can. [ 2 ] The cause is unknown but is usually associated with violent deaths under extreme physical circumstances with intense emotion , such as the circumstances associated with death ...
Rigor mortis [a] (from Latin rigor 'stiffness' and mortis 'of death'), or postmortem rigidity, is the fourth stage of death. It is one of the recognizable signs of death , characterized by stiffening of the limbs of the corpse caused by chemical changes in the muscles postmortem (mainly calcium). [ 1 ]
Regulations concerning fabrication or forgery of medical certificates vary by jurisdiction, but users of falsified medical certificates may face legal and health consequences. [15] In New South Wales, medical professionals who "deliberately issue a false, misleading or inaccurate certificate" can be charged under the Medical Practice Act.
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The standard of rigor is not absolute and has varied throughout history. A proof can be presented differently depending on the intended audience. To gain acceptance, a proof has to meet communal standards of rigor; an argument considered vague or incomplete may be rejected. The concept of proof is formalized in the field of mathematical logic. [12]