منابع مشابه
Fossil embryos deep in the fossil record
Embryos have been found in ‘old’ rocks on four continents, especially in Siberia, Nevada, Australia and China. They have been discovered in sedimentary rocks of even Late Neoproterozoic age, assuming the evolutionary geological column1 (figure 1). The Neoproterozoic is the period, so called, between 1 billion and 550 million years ago. This discovery was in the Doushantuo Formation, Guizhou Pro...
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Scoring protocols are a broad class of voting systems. Each is defined by a vector (α1, α2, . . . , αm), α1 ≥ α2 ≥ · · · ≥ αm, of integers such that each voter contributes α1 points to his/her first choice, α2 points to his/her second choice, and so on, and any candidate receiving the most points is a winner. What is it about scoring-protocol election systems that makes some have the desirable ...
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This paper provides a more accessible account of some of the material from Woodin [4] and [5]. All unattributed results are due to the first author. Recall that 0# is a certain set of natural numbers that codes an elementary embedding j : L → L such that j 6= id L. Jensen’s covering lemma says that if 0# does not exist and A is an uncountable set of ordinals, then there exists B ∈ L such that A...
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McDonald et al (2005) investigated the Kraepelinian dichotomy of psychosis using brain imaging. They reported distinct grey matter volumetric deficits in patients with schizophrenia and those with psychotic bipolar I disorder but common white matter abnormalities in the two disorders. Kraepelin distinguished dementia praecox and manic–depressive psychosis on the basis of symptomatology, course ...
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I want to share with you the usefulness and circumstances surrounding AJOr's May issue on work evaluat.ion. As ajunior occupational therapy student I was scheduled to give a panel presentation on prevocational training skills as part of a class requirement. However, another special event ~\'as scheduled which t.hankfully postponed my presentation until the following week. The extra time gave me...
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ژورنال
عنوان ژورنال: Nature
سال: 1998
ISSN: 0028-0836,1476-4687
DOI: 10.1038/31853