480 research outputs found

    Computation vs. Information Processing: Why Their Difference Matters to Cognitive Science

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    Since the cognitive revolution, it’s become commonplace that cognition involves both computation and information processing. Is this one claim or two? Is computation the same as information processing? The two terms are often used interchangeably, but this usage masks important differences. In this paper, we distinguish information processing from computation and examine some of their mutual relations, shedding light on the role each can play in a theory of cognition. We recommend that theorists of cognition be explicit and careful in choosing\ud notions of computation and information and connecting them together. Much confusion can be avoided by doing so

    Information Processing, Computation and Cognition

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    Computation and information processing are among the most fundamental notions in cognitive science. They are also among the most imprecisely discussed. Many cognitive scientists take it for granted that cognition involves computation, information processing, or both – although others disagree vehemently. Yet different cognitive scientists use ‘computation’ and ‘information processing’ to mean different things, sometimes without realizing that they do. In addition, computation and information processing are surrounded by several myths; first and foremost, that they are the same thing. In this paper, we address this unsatisfactory state of affairs by presenting a general and theory-neutral account of computation and information processing. We also apply our framework by analyzing the relations between computation and information processing on one hand and classicism and connectionism/computational neuroscience on the other. We defend the relevance to cognitive science of both computation, at least in a generic sense, and information processing, in three important senses of the term. Our account advances several foundational debates in cognitive science by untangling some of their conceptual knots in a theory-neutral way. By leveling the playing field, we pave the way for the future resolution of the debates’ empirical aspects

    Metastatizing ovarian Carcinoma in an eurasian brown bear (Ursus Arctos Arctos): a case report.

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    A case of ovarian carcinoma, never previously reported in bear is described. A 37-year-old, nulliparous, female Eurasian brown bear hosted at the Falconara Parco Zoo in Italy, showed neurological clinical signs including bilateral blindness and signs of hemiparesis involving both limbs of the left side. A therapy based on fluid, dexamethasone sodium phosphate, ranitidine, ceftriaxone, propentofylline, and a vitamin B complex administration was started after the onset of sintomatology. After about a week of therapy the bear was able to stand up and walk, partially recovered the vision and ate regularly. Despite this initial improvement, three weeks after the clinical onset the bear died. At necropsy a large mass involving the left ovary and brain metastases has been found. Based on the typical histological and immunohistochemical features of neoplastic cells, this tumor was diagnosed as papillary to solid serous type ovarian carcinoma. Because of the scattered distribution pattern of neoplastic nodules, the involvement of the brain and lombo-aortic lymph node was considered to be metastatic. Only few reports of neoplasms in Ursidae can be found in scientific literature and these include lymphosarcoma, osteoma, osteosarcomas, chondrosarcoma, squamous cell, biliary, thyroid, mammary, and hepatocellular carcinomas. According to these results, the presence of tumor should be considered in bears with neurological signs

    Web based 3D quantitative measurements of abdominal aortic aneurysms

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    We tested a novel approach for the quantitative remote analysis of abdominal aortic aneurysms by reconstructing their 3D geometry and topological structure (i.e. centereline path) and put them on the web as VRML97 models including specialized code enabling the user to perform guided inspection and measurements useful for surgical planning

    Innovative Architecture for Industrial Monitoring System

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    This thesis aims to develop a new innovative architecture for monitoring and SCADA systems able to centralize data and support data analytics for ideally every kind of productions. The core of the innovation is the definition and management inside the platform of a JSON configuration which describe the machine or the plant to be monitored. The state of the art gives a complete landscape about how technologies have evolved since the born of web and which of them have been applied in distributed system such as web monitoring systems. One of the most important topics here are the communication protocols, new generation of high performance databases and the purpose of machine learning algorithms in order to improve maintenance activities and support decision making process. Then the architecture of the system has been presented paying attention on the concept of reconfigurability and customization of the platform. This is done by configuring the machines by means a JSON descriptor that indicates which data collect in the system. An appendix explains in deep how the JSON configuration works and which parameters the user can manipulate in order to increase the precision and the performance of the system. Systems like the one proposed can be used in vary different ways and the thesis wants to analyze some of them and proposing solutions describing real case studies. These case studies regard quality check on the production line (online or offline), data collection for production scheduling and whole monitoring systems for textile application

    Functional and morphological adaptations of the digestive system induced by domestication in cats.

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    Several studies have showed the macroscopic difference in the gastrointestinal tract between the European wildcat (Felis silvestris silvestris) and the domestic cat (Felis silvestris catus). Digestive system in the wildcat is shorter than in domestic species and this feature is considered distinctive in the taxonomic classification of subjects (Schauenberg et al. 1977). This study is a part of a large investigation regarding the microscopic anatomy of the gastrointestinal tract of European wildcat, associated to the study of intestinal microbiome. Its main purpose was to enhance knowledge about this species, to get a comparison with domestic cat, and to evaluate if and how domestication has influenced the functional and morphological development of this apparatus, also n n t ut\u2018s m roflor To this aim we collected, weighted and measured the gastrointestinal tract of twenty European wildcats. Afterwards, intestinal sections were sampled, treated and observed at the microscope in order to evaluate histological characteristics as the villi height and width, crypts depth and wall thickness. Moreover, we wanted to study the intestinal production of an apolipoprotein that is believed directly related to the development of hepatic steatosis, decreasing the amount of lipids deposited in the liver. For this purpose, liver specimens were collected and treated to study histologically the degree of vacuolar degeneration of hepatocytes. Data were analyzed and compared with those of the domestic cats coming from our database. In attempt to evaluate the microbiome, feces and rectal ampulla were collected and sent to the Texas A&M University for pyrosequencing analysis (data not shown). Results demonstrated significant differences in intestinal structure between F. catus and F. s. silvestris. Villi coming from domestic cats were significantly shorter (p<0.0001) and wider (p<0.0142) than in wildcats that showed crypts deeper (p<0.0009). Domestication has led to significant changes in adaptation regarding both behavior and diet. Several studies showed the correlation between diet changes (protein, carbohydrates, and fiber concentration) and morphological adaptation in the gut of different species (Altmann, 1972; Hampson, 1983; Goodlad et al., 1988; Pluske et al., 1996; Sritiawthai et al., 2013). Moreover, data from liver study showed that domestic cat has higher levels of apolipoprotein compared to the wild cat and that the percentage of lipids in the liver was lower in F. catus than in F. s. silvestris. Despite these results, the liver of domestic cat revealed a rate of steatosis higher than in wild cat. Indeed, this pathology proved to be almost absent in wild cats and can be explained by the different nature of the two species diet and microbiome composition. This study revealed that transition from a strictly-carnivorous diet (typical of the wild cat) to an omnivorous type, has modified the nutritional intake considerably and influenced the evolution of the digestive apparatus in domestic cat

    Solutions of second-order and fourth-order ODEs on the half-line

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    We start by studying the existence of positive solutions for the differential equation u '' = a(x)u - g(u), with u ''(0) = u(+infinity) = 0, where a is a positive function, and g is a power or a bounded function. In other words, we are concerned with even positive homoclinics of the differential equation. The main motivation is to check that some well-known results concerning the existence of homoclinics for the autonomous case (where a is constant) are also true for the non-autonomous equation. This also motivates us to study the analogous fourth-order boundary value problem {u((4)) - cu '' + a(x)u = vertical bar u vertical bar(p-1)u u'(0) = u'''(0) = 0, u(+infinity) = u'(+infinity) = 0 for which we also find nontrivial (and, in some instances, positive) solutions

    Anomalous Couplings in Double Higgs Production

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    The process of gluon-initiated double Higgs production is sensitive to non-linear interactions of the Higgs boson. In the context of the Standard Model, studies of this process focused on the extraction of the Higgs trilinear coupling. In a general parametrization of New Physics effects, however, an even more interesting interaction that can be tested through this channel is the (ttbar hh) coupling. This interaction vanishes in the Standard Model and is a genuine signature of theories in which the Higgs boson emerges from a strongly-interacting sector. In this paper we perform a model-independent estimate of the LHC potential to detect anomalous Higgs couplings in gluon-fusion double Higgs production. We find that while the sensitivity to the trilinear is poor, the perspectives of measuring the new (ttbar hh) coupling are rather promising.Comment: 22 pages, 9 figures. v2: plots of Figs.8 and 9 redone to include experimental uncertainty on the Higgs couplings, references adde

    Hepatitis E virus detection in hunted wild boar (Sus scrofa) livers in Central Italy

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    Hepatitis E virus (HEV) is a zoonotic pathogen, responsible for numerous cases of infection in humans. Transmission occurs through the orofecal route, and ingestion of contaminated foods represents an important risk factor for final consumer's health. Wild animal species, in particular wild boar (Sus scrofa), are the main virus reservoirs; liver is the target organ, from which, through the hematic diffusion, HEV reaches different tissues and organs, as muscular one. The hygienic-sanitary critical issues connected with game meat food chain in general, and particularly wild boar, with special regards to any geographical area where this animal species can be directly in contact with humans, domestic ones (i.e., domestic pig), and other wild reservoirs (i.e., wild ruminants), finds favorable environmental conditions, have induced us to conduce the present scientific investigation.During the hunting season 2019/2020, a total of 156 wild boar livers were collected from provided plucks at slaughterhouse in Ascoli Piceno. Nested RT-PCR was used for the viral RNA detection. Results demonstrated a positivity of 5.12% (8/156), and the circulation in the screened area of genotype 3 subtype c, which is frequently identified in Central Italy. HEV sanitary relevance and the emerging role of any food chains in its transmission impose further detailed studies. The molecular screening of hunted wild boars' livers can provide important information about virus's circulation in wild animal populations in a specific area

    Directional detection of light dark matter from three-phonon events in superfluid 4^4He

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    We present the analysis of a new signature for light dark matter detection with superfluid 4^4He: the emission of three phonons. We show that, in a region of mass below the MeV, the kinematics of this process can offer a way to reconstruct the dark matter interaction vertex, while providing background rejection via coincidence requirements and directionality. We develop all the necessary technology to deal with such an observable, and compute the associated differential distributions.Comment: 8 pages, 4 figures. Version published in Physical Review
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