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Search Results: 1 - 10 of 3137 matches for " Josep Carmona "
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The Tekhne-Logic Revolution. Rethinking the “Interobjective” Dimension of the Integral Theory. Consequences and Relevance to Education  [PDF]
Josep Gallifa
Creative Education (CE) , 2018, DOI: 10.4236/ce.2018.97081
Abstract: Wilber’s Integral Theory is a framework, widely used in different fields, aimed at unifying the premodern, modern and postmodern legacies and worldviews in one system. The subjective, objective and intersubjective dimensions of the Integral Theory correspond respectively to each one of the mentioned worldviews. This article reviews and explores in depth the interobjective dimension, necessary for a really quaternary integral approach, which has to include appropriately the human work and creativity. This is achieved trough understanding the interobjective character of the tekhne logic. Tekhne is the Aristotelian word to designate “productive science”. The study discusses the foundation of the interobjective at different levels (ontological, anthropological, cultural and psychological) and describes the evolutionary character of the tekhne logic. Finally the article explores the relevance of this characterization to the Integral Theory; but also to Metaphysics, Epistemology and especially to Education.
Kretzoiarctos gen. nov., the Oldest Member of the Giant Panda Clade
Juan Abella, David M. Alba, Josep M. Robles, Alberto Valenciano, Cheyenn Rotgers, Raül Carmona, Plinio Montoya, Jorge Morales
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0048985
Abstract: The phylogenetic position of the giant panda, Ailuropoda melanoleuca (Carnivora: Ursidae: Ailuropodinae), has been one of the most hotly debated topics by mammalian biologists and paleontologists during the last century. Based on molecular data, it is currently recognized as a true ursid, sister-taxon of the remaining extant bears, from which it would have diverged by the Early Miocene. However, from a paleobiogeographic and chronological perspective, the origin of the giant panda lineage has remained elusive due to the scarcity of the available Miocene fossil record. Until recently, the genus Ailurarctos from the Late Miocene of China (ca. 8–7 mya) was recognized as the oldest undoubted member of the Ailuropodinae, suggesting that the panda lineage might have originated from an Ursavus ancestor. The role of the purported ailuropodine Agriarctos, from the Miocene of Europe, in the origins of this clade has been generally dismissed due to the paucity of the available material. Here, we describe a new ailuropodine genus, Kretzoiarctos gen. nov., based on remains from two Middle Miocene (ca. 12–11 Ma) Spanish localities. A cladistic analysis of fossil and extant members of the Ursoidea confirms the inclusion of the new genus into the Ailuropodinae. Moreover, Kretzoiarctos precedes in time the previously-known, Late Miocene members of the giant panda clade from Eurasia (Agriarctos and Ailurarctos). The former can be therefore considered the oldest recorded member of the giant panda lineage, which has significant implications for understanding the origins of this clade from a paleobiogeographic viewpoint.
Evaluación del impacto de los programas de vacunación masiva: la experiencia de la hepatitis A en Catalu?a
Oviedo,Manuel; Mu?oz,Pilar; Domínguez,ángela; Carmona,Gloria; Batalla,Joan; Borras,Eva; Jansà,Josep Maria;
Revista Espa?ola de Salud Pública , 2009, DOI: 10.1590/S1135-57272009000500011
Abstract: background: the hepatitis a + b vaccination programme of preadolescents was introduced in 1998 in catalonia. during the following years, one of the main objectives has been to quantify the reduction in the incidence of hepatitis a caused by the vaccination programme. methods: a retrospective analysis applying the space-time scan statistic to reported incidence rates of hepatitis a was carried out in the counties of catalonia from 1992 to 2007. the relative risk (rr) was calculated and the spatial autocorrelation was estimated using moran's i statistic. results: six of the 7 space-time clusters identified by the scan statistic occurred in the pre-vaccine era (1992-1998) and only one in the post-vaccine era (1992-2007). in the first 10 four-weekly periods of the post-vaccine era (1999-2005) there was a significant reduction in the incidence of hepatitis a in catalonia with respect to the pre-vaccine era (1992-1998) (p<0,01). conclusions. moran's i statistic showed no pattern of global spatial dependence and was useful in detecting local clusters. these results corroborate previous studies that attributed most of the reduction in the incidence of hepatitis a in catalonia to the effect of vaccination.
Unfolding-Based Process Discovery
Hernán Ponce-de-León,César Rodríguez,Josep Carmona,Keijo Heljanko,Stefan Haar
Computer Science , 2015,
Abstract: This paper presents a novel technique for process discovery. In contrast to the current trend, which only considers an event log for discovering a process model, we assume two additional inputs: an independence relation on the set of logged activities, and a collection of negative traces. After deriving an intermediate net unfolding from them, we perform a controlled folding giving rise to a Petri net which contains both the input log and all independence-equivalent traces arising from it. Remarkably, the derived Petri net cannot execute any trace from the negative collection. The entire chain of transformations is fully automated. A tool has been developed and experimental results are provided that witness the significance of the contribution of this paper.
Enzyme Kinetic Equations of Irreversible and Reversible Reactions in Metabolism  [PDF]
Santiago Imperial, Josep J. Centelles
Journal of Biosciences and Medicines (JBM) , 2014, DOI: 10.4236/jbm.2014.24005
Abstract:

This paper compares the irreversible and reversible rate equations from several uni-uni kinetic mechanisms (Michaelis-Menten, Hill and Adair equations) and bi-bi mechanisms (single- and double- displacement equations). In reversible reactions, Haldane relationship is considered to be identical for all mechanisms considered and reversible equations can be also obtained from this rela- tionship. Some reversible reactions of the metabolism are also presented, with their equilibrium constant.

Los pactos territoriales en Italia: Un análisis de la experiencia reciente y sus implicancias en términos de governance
Carmona,Rodrigo;
EURE (Santiago) , 2006, DOI: 10.4067/S0250-71612006000200007
Abstract: the article analyses the importance of territorial pacts in italy as a new trend in public policies to promote collective and negotiate processes of local development. this kind of instrument is considered from different stand-points: a) in the light of new tendencies and governance in the european scene, and b) related with the main results in terms of performance and efficiency in the italian context. finally, the study of these elements aims at considering the true relevance of pacts in the overall improvement of territory and the development of more pluralist practices at local levels
Banco de sementes e estabelecimento de plantas daninhas em agroecossistemas
Carmona, Ricardo;
Planta Daninha , 1995, DOI: 10.1590/S0100-83581995000100001
Abstract: the seed bank in the soil was estimated in november/92 at 0-10 cm depth in some agro-ecosystems: arable land, meadow land, citrus orchard and a brachiaria brizantha pasture in distrito federal, brazil. these estimates were carried out by the evaluation of seedling emergence in incubated soil samples, with and without pre-washing through sieve (0,297 mm mesh). the pre-washed samples were incubated with potassium nitrate, while water was added to the others. the pre-washing plus potassium nitrate reduced the amount of seedlings in all samples, and thus is not recommended. the average numbers of viable seeds per square meter in the non-washed samples were: 22313 in the marsh land, 6 768 in the arable land, 3 595 in the projection of the plants in the orchard and 529 in the pasture. the established plants in the field were evaluated once in may/93, on normal crop conditions. they represented, in relation to the initial seed bank: 0.34% in the pasture, 0,71% in the meadow land, 1,48% in the orchard and 1.56% in the arable land. these plants would contribute to the maintenance of the seed bank in the soil. there was a direct correlation between the plant population and the number of species with the size of seed bank. the species that predominated in the disturbed areas were: ageratum conyzoides, bidens pilosa, cenchrus echinatus, commelina benhhalensis, emilia sonchifolia, euphorbia heterophylla and richardia brasiliensis. brachiaria spp predominated between the plants in the orchard, while the few weeds that occurred in the pasture belonged to the natural cerrado vegetation of the region. the similarity of agro-ecosystems was higher in disturbed areas, such as arable land, meadow land and orchard.
Problemática e manejo de bancos de sementes de invasoras em solos agrícolas
Carmona, R.;
Planta Daninha , 1992, DOI: 10.1590/S0100-83581992000100007
Abstract: the problematic of weed seed banks in the soil is discussed in terms of its importance, the mechanisms that guarantee the maintenance of large seed numbers in the soil and the dynamics of weed seed banks. the management of weed seed banks in the soil is also discussed with emphasis in the practices of soil tillage and the application of germination stimulants.
Influência pH na reposta de sementes de plantas daninhas a substancias promotoras de germina??o
Carmona, Ricardo;
Planta Daninha , 1997, DOI: 10.1590/S0100-83581997000100001
Abstract: the effects of ph on the action of some dormancy-relieving chemicals were investi gated on seeds of chenopodium album, avena fatua and rumex crispus. sodium azide (a), potassium nitrate + ethephon (ne), ne + a, ne + a + thiourea + hydrogen peroxide were tested in soil trays or in paper (in vitro) with buffer solutions in controlled environment. the response to ne was not affected by ph from 3 to 9. sodium azide had the gre ate st effect on seed decline, but its effect was ph-dependent. this compound was extremely deleterious for chenopodium album l. and avena fatua l. seeds in acid soil (ph 4), while in basic soil it relieved dormancy of a . fatua. at ph 6. 2 the combin ation of ne + a was detrimental to c. album and a. fatua, perhaps because of an antagonism between the compounds. mixing the five compounds toge ther reduced the influence of ph on the deleterious effect of azide. deleterious effect of this compound was less affected by temperature than its dormancy -relieving action. the solution extracted from both soils did not affect the treatments in vitro at different temperatures compared with buffers at similar ph. the influence of soil characteristics on the efficacy of dormancy-relieving or weed killing treatments in the field is discussed.
Influência das variac?es estacionais e profundidade de sementes no solo na dormência e germina??o em Rumex crispus L.
Carmona, Ricardo;
Planta Daninha , 1993, DOI: 10.1590/S0100-83581993000100005
Abstract: rumex crispus l. seeds were buried at 1 and 10 cm depth in the soil and retrieved at regular intervals during two years. retrieved seeds were tested at 10o and 20o in darkness; at 5/25oc (16/8 hours) with 10 mm potassium nitrate and light; and at an alternating temperature regime corresponding to the minimum and maximum soil temperatures (mmts) at a depth of 1 cm during the six days prior to each retrieval. mmts treatments were carried out in darkness with either 1 mm potassium nitrate or a cocktail of dormancy relieving chemicals consisting of potassium nitrate, thiourea, ethephon, sodium azide and hydrogen peroxide. there was no appreciable loss of seed viability in the soil during the study period. the seeds showed dormancy cycles in the soil throughout the year, where low soil temperatures relieved primary dormancy and induced secondary dormancy, which in turn was relieved by high temperatures. there was a year-to-year reduction in seed dormancy. the environment at 10 cm favoured loss of dormancy, however the depletion due to in situ germination was faster at 1 cm. the chemical mixture was more effective when dormancy was minimal and the soil temperatures were more promotive, which coincided to the warm period of the year (from spring to autumn). these results are discussed in terms of the interpretation of the ecological behaviour of this species in the field and the adoption of practices of management of seed banks in the soil.
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