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Search Results: 1 - 10 of 458 matches for " Santini "
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Aprovechamiento de Myocastor coypus (Rodentia, Caviomorpha) en sitios del Chaco Húmedo argentino durante el Holoceno tardío
Santini,Mariano;
Intersecciones en antropolog?-a , 2011,
Abstract: of the mammals from archaeological sites in chaco province, myocastor coypus constituted an important subsistence resource for the human groups that inhabited the area of esteros, ca?adas and selvas de ribera in the late holocene. the aim of this paper is to present the results of materials studies relating to m. coypus from the archaeological sites of el cachapé potrero 5 and sotelo 1 (primero de mayo department, chaco province). chronologically, these sites are located between 1200 and 1690 years bp. the nisp was 7,868 and 4,412 and the mni 251 and 259 for potrero v and sotelo i, respectively, accounting for 84% and 77.1% of all specimens recovered from the two archaeological sites. in addition to quantitative analysis, age profiles and osseous, anthropogenic, and natural modifications were analyzed, identifying the various taphonomic agents that influenced the formation of the samples. m. coypus was of great importance to the subsistence of human groups that inhabited the region. such groups took full advantage of the rodent, using them not only as a food resource but also as a raw material for the manufacture of bone tools and probably also for their hides.
Síndrome do esgotamento profissional Revis o Bibliográfica
Joarez Santini
Movimento , 2004,
Abstract: En las últimas décadas, pesquisadores de varias áreas se han preocupado con lo fenómeno Síndrome del Agotamiento Profesional (SEP), caracterizado como enfermedad del trabajo. Considerada el nivel más avanzado del stress, la SEP afecta innumerables profesiones, principalmente aquéllas en que los profesionales poseen contacto directo con personas, entre los cuales, los profesores. La revisión bibliográfica con textos en lengua portuguesa, inglesa y espa ola sobre el tema permitió unificar la expresión del fenómeno como "Síndrome del Agotamiento Profesional" (SEP). El aprofundamiento de estudios sobre este fenómeno en determinados colectivos docentes, como los profesores de Educación Física, posibilitará ampliar la compreensión y elaborar significativos cuestionamientos abarcando el trabajo docente y el fenómeno descrito en la bibliografía. Se destaca que en esa revisión de literatura, fueron encontrados pocos trabajos que se refieran a colectivos de trabajadores docentes. En el caso de los profesores de Educación Física, foco de interés e investigativo de este estudio, pocos los trabajos encontrados sobre el asunto.
Montefeltro seismicity: from Serpieri's seismograph to the RSNC seismograph station
S. Santini
Annals of Geophysics , 2000, DOI: 10.4401/ag-3653
Abstract: In recent years, the recovery of some historical documents has permitted us to operate the seismographs used by Alessandro Serpieri (1823-1885) at the Observatory of the University of Urbino in the XIX century. The space-time concept of sensor network was already clear to Serpieri and he tried to apply this concept to the analysis of seismic phenomena in Italy. This paper reviews the history of the Urbino Observatory from Serpieri's age to present times. The historical region of Montefeltro, where Urbino is the main town, is affected by seismicity with typical magnitudes between 2.2 and 2.5. Most of these events occur in the upper 15 km of the crust. The seismicity of the neighbouring regions is mainly concentrated in three zones: Northern Rimini, the Apennine belt and the Sibillini Mountain area. From the overall data, it is possible to infer that there is a basin characterised by microseismicity and essentially dominated by a compressive tectonic regime in the Montefeltro area. Furthermore seismological data seem to show a "quiet" segment, separating the extension area from the compression area, characterised by a low concentration of seismic events.
A note on Northern Marche seismicity: new focal mechanisms and seismological evidence
S. Santini
Annals of Geophysics , 2003, DOI: 10.4401/ag-4374
Abstract: A geodynamic interpretation of the Northern Marche region is diffi cult, the zone being characterized by complex structures which cannot be defi ned in the form of a simple, standard model. It is unquestionable that the geodynamic setting, whatever it is, bears a strong infl uence on the seismic hazard assessment of a region, and this is the background reason for the present note. In order to obtain a more detailed picture of seismological evidence in this zone, 11 new fault plane solutions of crustal events with 2.9 < M < 4.3 were calculated, using data recorded by the national seismic network of the Istituto Nazionale di Geofi sica e Vulcanologia in the period 1990-2000. The aim is to add local information to the previous studies by Frepoli and Amato (1997, 2000). A possible result of this new study is the division of the Northern Marche region into three areas with different focal mechanism categories: the inner area of the Apenninic belt, the Adriatic on-shore and the Adriatic off-shore. This note is intended to be a contribution to update seismological evidence in the Northern Marche region.
Aprovechamiento de Myocastor coypus (Rodentia, Caviomorpha) en sitios del Chaco Húmedo argentino durante el Holoceno tardío Myocastor coypus (Rodentia, Caviomorpha) procurement at sites in the argentinean Chaco Humedo during the late Holecene
Mariano Santini
Intersecciones en Antropología , 2011,
Abstract: De los mamíferos presentes en los sitios arqueológicos del Chaco Húmedo durante el Holoceno tardío, Myocastor coypus constituyó un recurso importante en la subsistencia de los grupos humanos que habitaron la zona de esteros, ca adas y selvas de ribera. El objetivo de este trabajo es presentar los resultados obtenidos del estudio de los materiales arqueofaunísticos correspondientes a M. coypus provenientes de los sitios El Cachapé Potrero V y Sotelo 1 (departamento Primero de Mayo, provincia del Chaco). Cronológicamente, estos sitios se sitúan entre los 1200 y 1690 a os AP. Los materiales analizados ascienden a un NISP de 7868 y 4412 y un MNI de 251 y 259, para Potrero V y Sotelo 1, respectivamente, y representan el 84% y 77,1% del total de especímenes recuperados. Además del análisis cuantitativo se determinaron los perfiles etarios y se analizaron las modificaciones óseas, antrópicas y naturales, que permitieron identificar los agentes tafonómicos que intervinieron en la formación de los conjuntos muestreados. Los estudios mostraron que se realizó un aprovechamiento integral del coypo -al cual se lo utilizó tanto como fuente de alimento como de materia prima para la confección de instrumentos óseos-; y que, probablemente, también se haya aprovechado su cuero. Of the mammals from archaeological sites in Chaco Province, Myocastor coypus constituted an important subsistence resource for the human groups that inhabited the area of Esteros, Ca adas and Selvas de Ribera in the Late Holocene. The aim of this paper is to present the results of materials studies relating to M. coypus from the archaeological sites of El Cachapé Potrero 5 and Sotelo 1 (Primero de Mayo Department, Chaco Province). Chronologically, these sites are located between 1200 and 1690 years BP. The NISP was 7,868 and 4,412 and the MNI 251 and 259 for Potrero V and Sotelo I, respectively, accounting for 84% and 77.1% of all specimens recovered from the two archaeological sites. In addition to quantitative analysis, age profiles and osseous, anthropogenic, and natural modifications were analyzed, identifying the various taphonomic agents that influenced the formation of the samples. M. coypus was of great importance to the subsistence of human groups that inhabited the region. Such groups took full advantage of the rodent, using them not only as a food resource but also as a raw material for the manufacture of bone tools and probably also for their hides.
Relationship between research, academic career and scientific publications
V. Santini
Drugs and Cell Therapies in Hematology , 2013, DOI: 10.4081/dcth.2013.80
Abstract: Medical research does not exist if not published. This sentence was addressed to me many years ago by a senior Italian hematologist. Of course, a scientific publication is essential to communicate important data in a determinate field of science. There is an enormous pressure on all scientists, but in particular on academic physicians both junior and senior, to obtain as many publications as possible, in the shortest time possible. But an essential condition is that the quality of published research has to be guaranteed and maintained versus the quantity required so desperately. Thus: how to measure quality and how to avoid problems related to academic pressure? A complex mathematical and statistical method has been elaborated by studying the publication careers of individual authors over the 50-year period 1958-2008. The objective of the academic community for the next future must be the strenghtening of research capacity.
007 a servi o secreto da guerra fria
Santini, Henrique
Sess?es do Imaginário , 1998,
Abstract:
New technologies for modernization and management of irrigation piping
Alessandro Santini
Italian Journal of Agronomy , 2011, DOI: 10.4081/ija.2006.s3.529
Abstract: Improving the efficiency of irrigation piping-systems represents a fundamental prerequisite to achieve a sustainable irrigation under both the environmental the economic point of view. Such an issue is important not only in areas with limited water-budget, but even in those areas where the increasing reduction of the water availability has become a worrying perspective. In the last twenty years, the reduction in water-availability and the increasing costs of system-management have highly limited the cultivated areas which are irrigated by means of water-distribution nets. In the recent years, most of the Italian investments in the irrigation-field have been oriented toward upgrading the open-channels irrigation nets, which were built starting from 50’, by substituting these latter with pipes. The modernization of the piping-systems has been achieved via innovative design solutions, such as back and loading water tanks or towers, which have lead to an improvement into the flexibility of the net management. Nearby the employment of such technologies, nowadays it is also possible to use the knowledge of the physical processes involved in the management of an irrigation system, starting from energy as well as mass exchange in the continuum soil-plant-atmosphere till to a detailed hydraulic description of a water distribution net under different flow regimes. Such a type of knowledge may be used to improve as well as buildup mathematical models for a decisions-support toward the management of complex irrigation districts. The acquirement of the data needed to implement such models has been deeply improved thanks to Geographical Information Systems (GIS), and techniques to analyze satellite-data coming from the Earth observation, which enable to characterize and monitor vegetation at different spatial, spectral and radiometric resolutions.
New technologies for modernization and management of irrigation piping
Alessandro Santini
Italian Journal of Agronomy , 2011, DOI: 10.4081/ija.2006.s529
Abstract: Improving the efficiency of irrigation piping-systems represents a fundamental prerequisite to achieve a sustainable irrigation under both the environmental the economic point of view. Such an issue is important not only in areas with limited water-budget, but even in those areas where the increasing reduction of the water availability has become a worrying perspective. In the last twenty years, the reduction in water-availability and the increasing costs of system-management have highly limited the cultivated areas which are irrigated by means of water-distribution nets. In the recent years, most of the Italian investments in the irrigation-field have been oriented toward upgrading the open-channels irrigation nets, which were built starting from 50’, by substituting these latter with pipes. The modernization of the piping-systems has been achieved via innovative design solutions, such as back and loading water tanks or towers, which have lead to an improvement into the flexibility of the net management. Nearby the employment of such technologies, nowadays it is also possible to use the knowledge of the physical processes involved in the management of an irrigation system, starting from energy as well as mass exchange in the continuum soil-plant-atmosphere till to a detailed hydraulic description of a water distribution net under different flow regimes. Such a type of knowledge may be used to improve as well as buildup mathematical models for a decisions-support toward the management of complex irrigation districts. The acquirement of the data needed to implement such models has been deeply improved thanks to Geographical Information Systems (GIS), and techniques to analyze satellite-data coming from the Earth observation, which enable to characterize and monitor vegetation at different spatial, spectral and radiometric resolutions.
Random Generation and Approximate Counting of Combinatorial Structures
Massimo Santini
Computer Science , 2010,
Abstract: The aim of this thesis is to determine classes of NP relations for which random generation and approximate counting problems admit an efficient solution. Since efficient rank implies efficient random generation, we first investigate some classes of NP relations admitting efficient ranking. On the other hand, there are situations in which efficient random generation is possible even when ranking is computationally infeasible. We introduce the notion of ambiguous description as a tool for random generation and approximate counting in such cases and show, in particular, some applications to the case of formal languages. Finally, we discuss a limit of an heuristic for combinatorial optimization problems based on the random initialization of local search algorithms showing that derandomizing such heuristic can be, in some cases, #P-hard.
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