We present two geometric proofs for KochenSpecker’s theorem [S. Kochen, E. P. Specker: The problem of hidden variables in quantum mechanics, J. Math. Mech. 17 (1967), 5987]. A quite similar argument has been used by Cooke, Keane, Moran [R. Cooke, M. Keane, W. Moran: An elementary proof of Gleason’s theorem, Math. Proc. Camb. Phil. Soc. 98 (1985), 117128], and by Kalmbach in her book to derive G...

BACKGROUND Ischemic heart diseases (IHD) are important causes of death in the Vale do Paraíba paulista. OBJECTIVE To identify patterns of spatial distribution of hospitalizations for acute myocardial infarction (AMI) and IHD in the Vale do Paraíba paulista. METHODS This was an ecological study using exploratory spatial analysis of hospitalization data for acute myocardial infarction and isc...

BACKGROUND Cutaneous melanoma is a skin cancer with low incidence but high mortality rates. The South region of Brazil has the highest death rates by melanoma per 100,000 inhabitants of the country. Little is known about the spatial distribution of this malignancy in southern Brazil. OBJECTIVES Identify the spatial patterns of deaths from cutaneous melanoma in South region of Brazil, using ge...

Although heightened throughout childhood and adolescence, sweet taste preference declines during late adolescence (Desor et al., 1977; Desor and Beauchamp, 1987). Despite such age-related changes in sweet preferences, individual variation, due to both genetics (Bartoshuk, 2000) and experience (Beauchamp and Moran, 1982, 1984), exists at both ends of the age spectrum (Desor et al., 1977; Beaucha...

CONTEXT AND OBJECTIVE Traffic accidents have gained prominence as one of the modern epidemics that plague the world. The objective of this study was to identify the spatial distribution of potential years of life lost (PYLL) due to accidents involving motorcycles in the state of São Paulo, Brazil. DESIGN AND SETTING Ecological and exploratory study conducted in São Paulo. METHODS Data on de...

* This paper was inspired by a conversation Berman had with his great uncle Rafuel Grinspun, shortly after the latter migrated from the Soviet Union. We appreciate the helpful comments of Lawrence Katz, Kevin Lang, Shlomo Yitzhaki and seminar participants at Boston University, the Hebrew University, Maryland, Yale, Michigan, MIT and an NBER Labor Studies session. We thank the Maurice Falk Insti...

Several groups have recently modeled evolutionary transitions from an ancestral allele to a beneficial allele separated by one or more intervening mutants. The beneficial allele can become fixed if a succession of intermediate mutants are fixed or alternatively if successive mutants arise while the previous intermediate mutant is still segregating. This latter process has been termed stochastic...

An Argument for Ecological Research and Intervention in Health Communication Meghan Bridgid Moran, Lauren B. Frank, Nan Zhao, Carmen Gonzalez, Prawit Thainiyom, Sheila T. Murphy & Sandra J. Ball-Rokeach To cite this article: Meghan Bridgid Moran, Lauren B. Frank, Nan Zhao, Carmen Gonzalez, Prawit Thainiyom, Sheila T. Murphy & Sandra J. Ball-Rokeach (2016) An Argument for Ecological Research and...

OBJECTIVE To investigate the association between homicide rates and socio-economic variables taking into account the spatial site of the indicators. METHODS An ecological study was conducted. The dependent variable was the rate of homicides among the male population aged 15 to 49 years, residing in the districts of the State of Pernambuco from 1995 to 1998. The independent variables were an i...