A case of partial leucism in the American Barn Owl (Tyto furcata) (Temminck, 1827), from Buenos Aires province, Argentina

The diverse colorations of a birds’ plumage are due to either structural colors or pigments that are synthesized in specialized cells or incorporated through the diet. However, plumage color aberrations can occur; several cases of albinism and leucism have been reported for different bird species and some examples correspond to Strigiformes. A specimen of the American barn owl (Tyto furcata) with partial leucism was found in Carhué, Buenos Aires province. The plumage of its facial disc, tail and the ventral region was completely white; furthermore, the neck, and the primary and secondary remiges were pigmented although in a significantly lighter fashion than in normal-phenotype specimens. The rest of the body presented a normal pattern for the species.Fil: Chiale, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; ArgentinaFil: Pagano Luis Gerardo. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina. Grupo Falco; Argentin

Property rights in the knowledge economy: an explanation of the crisis

Some of the roots underlying the recent crisis may be found in the global convergence towards a model characterized by strong property rights and an extremely limited role attributed to "open science". The modern economy has increasingly moved from an open science - open markets model toward a closed science - closed markets model. Paradoxically, while a non-rival resource like knowledge becomes the most relevant input, small firms and new entrants find it increasingly difficult to be competitive with large and well established organizations. Such a model is progressively increasing the costs of investment in new knowledge, with important negative consequences in terms of overall performance of the economy. We argue that in the knowledge economy, overcoming inequality and the economic crisis can be part of a single coherent policy. If some essential knowledge is moved from the private to the public sphere, this is has not only desirable inequality-decreasing consequences but can also contribute to re-launching the economy, creating the conditions for a sustained development. In a knowledge economy, a super-multiplier could couple the traditional effects of Keynesian spending in time of crisis with the multiplying virtues human knowledge, moved from the private to the public sphere.

Formalization of Universal Algebra in Agda

In this work we present a novel formalization of universal algebra in Agda. We show that heterogeneous signatures can be elegantly modelled in type-theory using sets indexed by arities to represent operations. We prove elementary results of heterogeneous algebras, including the proof that the term algebra is initial and the proofs of the three isomorphism theorems. We further formalize equational theory and prove soundness and completeness. At the end, we define (derived) signature morphisms, from which we get the contravariant functor between algebras; moreover, we also proved that, under some restrictions, the translation of a theory induces a contra-variant functor between models.Fil: Gunther, Emmanuel. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gadea, Alejandro Emilio. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pagano, Miguel Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentin

Information Technology, Organizational Form, and Transition to the Market

The paper reviews theories of information technology adoption and organizational form and applies them to an empirical analysis of firm choices and characteristics in four transition economies: the Czech Republic, Hungary, Romania, and Slovakia. We argue that these economies have gone through two major structural changes-one concerning new technology and another concerning ownership and boundaries of firms-and we consider if and how each one of the two structural changes has affected the other. We test the impact of firm size, integration, and ownership on the extent of new information technology adoption (measured by growth in the fraction of employees using personal computers or computer-controlled machinery), and the impact of information technology on changes in the boundaries and the ownership structure of enterprises, drawing upon a sample survey of 330 firms.transition, economy, Earle, technology, organizational, form, Pagano, Lesi, Upjohn

Seasonal Variation of White Clover Morphology at the North of Buenos Aires Province, Argentine

In order to study the seasonal variation in morphological characters that contribute to forage production in white clover (Trifolium repens L.) cultivars, a trial was conducted at Pergamino Agricultural Experimental Station INTA located north of Buenos Aires province, Argentina. The experimental plots were set out in a completely randomized design with four replicates. Measurements were performed over eight seasons throughout two years. The used cultivars had been previously reported as having differences in seasonal productivity. Significant differences were detected among seasons for all measured characters i. e. stolon length, number of buds, branches and leaves, and leaf area. Differences among cultivars in almost all the season were only found for leaf area and stolon length. The growth in length of stolons kept a consistent pattern in both years. No cultivar produced vegetative buds during summers. The characters most affected by environmental stress were bud and branch development. Keywords: Trifolium repens L., morphological characters, seasonal variation, cultivars.Para estudiar la variación estacional de los caracteres morfológicos que contribuyen a la producción de forraje en cultivares de trébol blanco (Trifolium repens L.), se realizó un ensayo en Estación Experimental Agropecuaria Pergamino INTA ubicada al norte de la provincia de Buenos Aires, argentino Las parcelas experimentales se establecieron en un diseño completamente al azar con cuatro replica Las mediciones se realizaron durante ocho temporadas a lo largo de dos años. El usado Se había informado previamente que los cultivares tenían diferencias en la productividad estacional. Significativo se detectaron diferencias entre estaciones para todos los caracteres medidos i. mi. longitud del estolón, número de yemas, ramas y hojas, y área foliar. Diferencias entre cultivares en casi toda la temporada solo se encontraron para área foliar y longitud de estolón. El crecimiento en longitud de los estolones mantuvo un ritmo constante patrón en ambos años. Ningún cultivar produjo brotes vegetativos durante los veranos. Los personajes más afectados por el estrés ambiental fueron el desarrollo de yemas y ramas.Estación Experimental Agropecuaria PergaminoFil: Pagano, Elba M. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; ArgentinaFil: Scheneiter, Jorge Omar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentin

Effect of moisture content on engineering properties of sorghum grains

Moisture constitutes one of the most influential factors in the conservation of sorghum grains during storage due to their relationship with the biological factors that cause postharvest damage, affecting the nutritional and economic values. For this reason it is important to evaluate the effect of moisture content on the physical characteristics of the grain in order to establish the design and operation conditions of the post-harvest processes. Accordingly, the aim of this work is to analyze the dependence on moisture content of physical properties of technological interest for the post-harvest grain sorghum stages.Experimental results show that the moisture significantly affects the properties width, thickness, geometric mean diameter, sphericity, bulk density, thousand seed weight, porosity, angle of repose and friction coefficient both on plywood surface as metal.Increased moisture content in the range of 0.13 to 0.29 dec. db results in increased for width, thickness, geometric mean diameter, sphericity, thousand seed weight, porosity, angle of repose and friction coefficient. For the other side, the same increase in moisture content leads a decrease in the bulk density of the grains with correlation coefficients in all cases higher than 0.99

Un percorso di trasformazione nel nuovo assetto detentivo/riabilitativo post OPG: esposizione di un caso

L’articolo illustra il lavoro psicologico-clinico effettuato all’interno della “Articolazione per la Tutela della Salute Mentale in Carcere”, nuovo contesto di cura ed assistenza nato alla luce dei radicali cambiamenti attivati dal processo di superamento degli Ospedali Psichiatrici Giudiziari (OPG) e che accoglie soggetti autori di reato affetti da patologia psichiatrica, garantendone un’osservazione costante ed interventi riabilitativi ad alta intensità terapeutica. Il caso presentato, attraverso la narrazione del percorso detentivo/riabilitativo di un soggetto, iniziato con la reclusione in regime ordinario, proseguito con l’assegnazione all’OPG e con il successivo approdo presso l’Articolazione SMC (Salute Mentale in Carcere), ed esitato nel trasferimento in un contesto comunitario, mira ad essere esemplificativo della valenza trasformativa di un approccio rivolto al paziente che, nella gestione della patologia psichiatrica, superi i limiti di un assetto prevalentemente custodialistico, spesso predominante nei pregressi contesti ad essa dedicati, e dia priorità alle finalità terapeutico-riabilitative

Personality and phobias in adolescence: age and gender in psychopathological expressions

Background: Although the understanding of adolescent phobias is important, this phenomenon has thus far not been adequately researched. This report, based on clinical experience, highlights prevalent phobic phenomena linked to personality characteristics. Methods: A sample of 241 adolescents from High School and the University of Messina, Italy was evaluated for phobic responses using the SAFA Scales. Personality types and aspects were assessed by the Myers-Briggs Type Indicator F Form. Results: The results were consistent with the reported literature and revealed that psychopathological phenomena such as anxiety, obsession, eating disorders and phobias decreased with aging; however, depression remained constant over time. Significant differences emerged regarding gender, with the presence of higher scores on all scales except obsession for the female group. Personality analysis revealed aspects linked to the relations between psychopathological variables, introversion/ extraversion (such as polar dimensions), and rational/ irrational functions. Conclusion: This research indicates that phobic phenomena may be underestimated in adolescents and links personality types and symptoms with phobic phenomena, indicating the potential need for interventions in adolescents

Information Technology, Organizational Form, and Transition to the Market

The paper reviews theories of information technology adoption and organizational form and applies them to an empirical analysis of firm choices and characteristics in four transition economies: Czech Republic, Hungary, Romania, and Slovakia. We argue that these economies have gone through two major structural changes – one concerning technology and another concerning ownership and boundaries of firms – and we consider if and how each of the two structural changes has affected the other. We test the impact of firm size, integration, and ownership on the extent of new information technology adoption (measured by growth in the fraction of employees using personal computers or computer controlled machinery), and the impact of information technology on changes in the boundaries and the ownership structure of enterprises, drawing upon a sample survey of 330 firms

How giving help to others can help young people deal with their own addiction.

ddiction is a significant problem among adolescents – it reduces academic performance, increases the likelihood of injury or criminal behavior, and has been estimated to cost US society as much as $500 billion every year. In new research, which builds on the idea that social connection and helping others can have benefits, Byron R. Johnson, Maria E. Pagano, Matthew T. Lee, and Stephen G. Post studied the effects of social isolation on young people who were being treated for alcohol and drug addiction. They find that socially estranged juveniles were more likely to relapse into addiction post-treatment, but also that those who gave help to others as part of the program were less likely to relapse and to commit crimes