Results 81 to 90 of about 2,830,839 (331)
Permanence as a Principle of Practice [PDF]
Historia Mathematica, 54, 77-94, 2021The paper discusses Peano's argument for preserving familiar notations. The argument reinforces the principle of permanence, articulated in the early 19th century by Peacock, then adjusted by Hankel and adopted by many others. Typically regarded as a principle of theoretical rationality, permanence was understood by Peano, following Mach, and against ...
arxiv +1 more source
Resúmenes de tesis y memorias de licenciatura leídas en el Departamento de Humanidades Contemporáneas División Historia Contemporánea, de la Universidad de Alicante [PDF]
, 1990 Resúmenes de: Quilis Tauriz, Fernando: Revolución y guerra civil. Las colectividades obreras en la provincia de Alicante (1936-1939). Tesis doctoral leída el 20 de febrero de 1990. Director: Dr. D.
Anales de la Universidad de Alicante. Historia Contemporánea
core +2 more sources
A atuação dos indígenas na História do Brasil: revisões historiográficas
, 2017 ResumoPara discutir a importância de incorpo-rar os indios na Historia do Brasil como protagonistas, apresento uma reflexao sobre algumas mudancas historiografi-cas resultantes dessa incorporacao, apontando a relevância academica, so-cial e politica ...
Maria Regina Celestino de Almeida
semanticscholar +1 more source
Integrative Zoology, EarlyView.Male frogs emit calls to attract mates and deter conspecific rivals. The evolution of these calls is thought to be linked to anatomical constraints and the acoustic characteristics of their surroundings. We tested these two factors in a radiation of 112 species of Neotropical treefrogs and found that body size and calling site affect peak frequency but
Moisés Escalona +17 more
wiley +1 more source
A brief note on how Einstein's general relativity has influenced the development of modern differential geometry [PDF]
arXiv, 2005 We briefly review a few aspects of the development of differential geometry which may be considered as being influenced by Einstein's general relativity. We focus on how Einstein's quest for a complete geometrization of matter and electromagnetism gave rise to an enormous amount of theoretical work both on physics and mathematics.
arxiv
Improving Whole Biodiversity Monitoring and Discovery With Environmental DNA Metagenomics
Molecular Ecology Resources, EarlyView.ABSTRACT Environmental DNA (eDNA) metagenomics sequences all DNA molecules present in environmental samples and has the potential of identifying virtually any organism from which they are derived. However, due to unacceptable levels of false positives and negatives, this approach is underexplored as a tool for biodiversity monitoring across the tree of
Manuel Curto +7 more
wiley +1 more source
Albert Einstein visits Argentina [PDF]
Todo es Historia 454 (May 2005), pp. 22-30, 2005 This is a detailed, day by day, account of Albert Einstein's activities, both social and scientific, during his 30-day stay in Argentina in 1925, including his lectures on relativity at the various local universities and his visit to the National Academy of Sciences, as follows from his personal Diary of the trip to South-America and other contemporary
arxiv
La Academia de Ciencias Veterinarias de Catalunya [PDF]
, 2002 Ante todo debemos decir que estos antecedentes ya fueron expuestos magistralmente por el Prof. Dr. Miguel Ángel Vives Valles, en las VI Jornadas Nacionales de Historia en Valencia (noviembre 2001) con su conferencia "Las Academias de Veterinaria", y en ...
Congreso Iberoamericano de Historia de la Veterinaria +2 more
core
Methods in Ecology and Evolution, EarlyView.Abstract One of the main limitations of phylogenetic comparative analyses is that associations between traits can only be interpreted as correlations. Here, we present a novel Bayesian structural equation model (PhyBaSE) which allows us to disentangle direct from indirect relationships among variables to propose potential causal hypotheses while ...
Achaz von Hardenberg +1 more
wiley +1 more source
¿Existe una nueva generación historiográfica en Costa Rica?
Revista de Historia, 1985 Introducción Nuestra nueva sección de “Debates” aborda el problema de si existe o no una nueva generación historiográfica en Costa Rica y, en todo caso, cómo han de caracterizarse los cambios suscitados –a partir de la década de 1970– en la manera de ...
Revista Historia
doaj