Filosofía y psicoanálisis : del otro lado del umbral

Fil: Forster, Ricardo. Universidad de Buenos Aires. Facultad de Ciencias Sociales; Argentina.Con Freud, a partir de Freud, la filosofía no puede eludir aquello que, por diversos motivos, solía\nquedar desplazado, aquello que la confronta con su otro, con sus penumbras y con su indecibles. El\ndiscurso filosófico tuvo que prestarle atención a aquello que antes de Freud sólo había emergido como\nuna sospecha molesta, como la señal de una irreparabilidad constitutiva que, sin embargo, no había\nencontrado, en la misma filosofía, su exponente. El psicoanálisis trajo a la superficie aquello que desde\nsiempre hizo resistencia en la búsqueda filosófica de la verdad; evidenció los límites de la razón y\nseñaló su imposible omnipotencia

El triunfo de la abstracción: semiocapitalismo y dominación neoliberal

Leo, no sin comenzar a preguntarme unas cuantas cosas que me remiten a nuestra actualidad, el último libro de Franco “Bifo” Berardi, Fenomenología del fin. Sensibilidad y mutación conectiva, en el que desmenuza la época de la digitalización y del predominio de la financiarización del mundo no sin derramar, al menos sobre mí, una sutil dosis de pesimismo civilizatorio que conduce más hacia la melancolía que a la rebelión.Facultad de Ciencias Jurídicas y Sociale

Dissociação entre movimento de xp e de x0: sem evidências do agramatismo

This paper is intended to show that a proposal (Grodzinsky & Friederici 2006) on dissociation between two types of movement (MOVEXP and MOVEV) is not supported by a critical review of data found in the literature of studies dealing with agrammatic aphasia. This procedure is considered to be of fundamental relevance for studies that plan to use evidence derived from studies based on linguistic aphasiology, since this field exhibits some problematic aspects concerning data analysis. Some conclusions reviewed here, thought to be straightforward, are, indeed, subject to questioning. In other cases, there are contradictory results that are commonly ignored in the construction of hypotheses. It is offered, then, a new posture on the consideration of the validity of studies that focus on aphasic syndromes within a linguistic framework

Measurement of the separation dependence of resonant energy transfer between CdSe/ZnS core/shell nanocrystallite quantum dots

The separation dependence of the interaction between two resonant groups of CdSe/ZnS nanocrystallite quantum dots is studied at room temperature. A near-field scanning optical microscope is used to bring a group of mono-disperse ~6.5 nm diameter nanocrystallite quantum dots which are attached to the microscope probe, into close proximity of `~8.5 nm diameter group of nanocrystallite quantum dots which are deposited on a solid immersion lens. Information extracted from photoluminescence, photoluminescence excitation and absorption curves as well as numerical calculations of the energy levels, show that the third excited excitonic energy level of the large quantum dots nearly matches the ground excitonic energy level for the small quantum dots. Quenching of the small quantum dots photoluminescence signal has been observed as they approach the large quantum dots. On average, the separation between microscope probe and solid immersion lens changed in the 15-50 nm range. The transition probability between these two groups of quantum dots is calculated to be (2.60 x 10-47 m6)/R6, within the (0.70 x 10-47 m6)/R6 - (11.0 x 10-47 m6)/R6 experimentally obtained range of transition probabilities. The F\"orster radius, as a signature of energy transfer efficiency, is experimentally found to be in the 14-22 nm range.Comment: 8 pages-8 figures Accepted Physical Review B 201

A novel satellite mission concept for upper air water vapour, aerosol and cloud observations using integrated path differential absorption LiDAR limb sounding

We propose a new satellite mission to deliver high quality measurements of upper air water vapour. The concept centres around a LiDAR in limb sounding by occultation geometry, designed to operate as a very long path system for differential absorption measurements. We present a preliminary performance analysis with a system sized to send 75 mJ pulses at 25 Hz at four wavelengths close to 935 nm, to up to 5 microsatellites in a counter-rotating orbit, carrying retroreflectors characterized by a reflected beam divergence of roughly twice the emitted laser beam divergence of 15 µrad. This provides water vapour profiles with a vertical sampling of 110 m; preliminary calculations suggest that the system could detect concentrations of less than 5 ppm. A secondary payload of a fairly conventional medium resolution multispectral radiometer allows wide-swath cloud and aerosol imaging. The total weight and power of the system are estimated at 3 tons and 2,700 W respectively. This novel concept presents significant challenges, including the performance of the lasers in space, the tracking between the main spacecraft and the retroreflectors, the refractive effects of turbulence, and the design of the telescopes to achieve a high signal-to-noise ratio for the high precision measurements. The mission concept was conceived at the Alpbach Summer School 2010

Correspondences in Arakelov geometry and applications to the case of Hecke operators on modular curves

In the context of arithmetic surfaces, Bost defined a generalized Arithmetic Chow Group (ACG) using the Sobolev space L^2_1. We study the behavior of these groups under pull-back and push-forward and we prove a projection formula. We use these results to define an action of the Hecke operators on the ACG of modular curves and to show that they are self-adjoint with respect to the arithmetic intersection product. The decomposition of the ACG in eigencomponents which follows allows us to define new numerical invariants, which are refined versions of the self-intersection of the dualizing sheaf. Using the Gross-Zagier formula and a calculation due independently to Bost and Kuehn we compute these invariants in terms of special values of L series. On the other hand, we obtain a proof of the fact that Hecke correspondences acting on the Jacobian of the modular curves are self-adjoint with respect to the N\'eron-Tate height pairing.Comment: 38 pages. Minor correction

Evaluation of the care provided by the outpatient clinic of the league of combat against STD/AIDS, health center, S.P., 1994-1997

Este trabalho analisou a assistência médica prestada pelos alunos da Liga de Combate a DST/AIDS, da Faculdade de Medicina de Ribeirão Preto - USP, no curso de três anos emeio, junto ao Programa de Prevenção e Controle de Aids do Centro de Saúde Escola. Foi utilizada a metodologia de avaliação em saúde (processo e resultados), que contemplou o estudo da assistência médica em um período contínuo de seguimento, sendo analisados os diagnósticos formulados, os exames laboratoriais e complementares prescritos, as medidas curativas e de promoção da saúde e prevenção de doenças. Foram estudados sessenta e seis (66) indivíduos, sendo 48,5% comunicantes de portadores do Vírus da Imunodeficiência Humana ou de doentes de aids, 27,3% portadores do HIV e 24,2% de doentes de aids. Houve maioria de pacientes masculinos, embora a relação homem:mulher cresça de 1:1, 2:1 e 3,5:1 no sentido comunicantes, portadores e doentes, com uma frequência modal de 40,9% na faixa etária de trinta (30) e trinta e nove (39) anos, o grau de escolaridade e as ocupações foram característicos de nível socioeconômico baixo. Formularam-se diagnósticos de deficiência da imunidade celular, exposição a doenças transmissíveis (aids, tuberculose e outras doenças infecciosas), infecções respiratórias agudas, doenças sexualmente transmissíveis, parasitoses, entre as principais. Em média, a clientela permaneceu 3,2 meses em seguimento, recebeu 2,4 consultas e 47,7% dela abandonouo atendimento. Os alunos participaram ativamente da pesquisa; a metodologia e as informações quantitativas contribuíram para a avaliação da qualidade da assistência médica, tendo o serviço de saúde correspondido como alternativa institucional para formação e assistência mais próxima da comunidade.The medical care provided by the students of the League of Combat against STD/AIDS belonging to the Faculty of Medicine of Ribeirão Preto - USP over a period of three and a half years was evaluated. We used the method of health evaluation based on the study of medical care during a continuous period of monitoring. The aim was to assess the quality of the care provided, analyzed in terms of the diagnoses formulated, of laboratory and complementary tests, of curative measures and of health promotion and disease prevention. A total of 66 individuals were studied, 48.5% of them being communicants of patients with HIV and AIDS, 27.3% HIVinfected patients, and 24.2% patients with AIDS. Most patients were males, although the man:woman ratio has been growing from 1:1, 2:1 and 3.5:1 in the following order: communicants, infected subjects and patients, with a modal frequency of 40.9% in the 30 to 39 year age range. Educational level and occupation were characteristic of a low socioeconomic level. The followingdiagnoses were made: cell immune deficiency; contacts with patients with aids, tuberculosis and other infectious diseases; infectious respiratory disease; sexually transmitted diseases; and parasitosis. The clients were followed up on average for a period of 3.2 months and received 2.4 visits, and 47.7% of them abandoned treatment. The students participated actively in the research, the methodology and the quantitative information obtained permitted the assessment of the quality of care, with the health service corresponding to the expectations for an institutional alternative for training and for providing care closer to the community

MLOps as enabler of trustworthy AI

As Artificial Intelligence (AI) systems are becoming ever more capable of performing complex tasks, their prevalence in industry, as well as society, is increasing rapidly. Adoption of AI systems requires humans to trust them, leading to the concept of trustworthy AI which covers principles such as fairness, reliability, explainability, or safety. Implementing AI in a trustworthy way is encouraged by newly developed industry norms and standards, and will soon be enforced by legislation such as the EU AI Act (EU AIA). We argue that Machine Learning Operations (MLOps), a paradigm which covers best practices and tools to develop and maintain AI and Machine Learning (ML) systems in production reliably and efficiently, provides a guide to implementing trustworthiness into the AI development and operation lifecycle. In addition, we present an implementation of a framework based on various MLOps tools which enables verification of trustworthiness principles using the example of a computer vision ML model

Towards the certification of AI-based systems

Certifying the trustworthiness of Artificial Intelligence (AI)-based systems based on dimensions including reliability and transparency is crucial given their increased uptake. Likewise, as regulatory requirements are established, actionable guidelines for certification will be useful for developers and certification bodies to ensure trustworthiness of AI. Here, we present an ongoing effort to develop a validated AI certification scheme which is a framework for assessing the trustworthiness of AI systems including specific objectives with their corresponding means of compliance (i.e. process, documentation or technical methods). Importantly, the scheme makes an explicit link between legal requirements and validated techniques for assessing the compliance of AI systems, resulting in the implementation of a workflow to support AI certification. We explain the rationale for developing the certification scheme and demonstrate the assessment of an example use case with a concrete workflow traversing from objectives to corresponding means, focused on reliability and transparency

Automatic Categorization for Improving Spanish into Spanish Sign Language Machine Translation

This paper describes a preprocessing module for improving the performance of a Spanish into Spanish Sign Language (Lengua de Signos Espanola: LSE) translation system when dealing with sparse training data. This preprocessing module replaces Spanish words with associated tags. The list with Spanish words (vocabulary) and associated tags used by this module is computed automatically considering those signs that show the highest probability of being the translation of every Spanish word. This automatic tag extraction has been compared to a manual strategy achieving almost the same improvement. In this analysis, several alternatives for dealing with non-relevant words have been studied. Non-relevant words are Spanish words not assigned to any sign. The preprocessing module has been incorporated into two well-known statistical translation architectures: a phrase-based system and a Statistical Finite State Transducer (SFST). This system has been developed for a specific application domain: the renewal of Identity Documents and Driver's License. In order to evaluate the system a parallel corpus made up of 4080 Spanish sentences and their LSE translation has been used. The evaluation results revealed a significant performance improvement when including this preprocessing module. In the phrase-based system, the proposed module has given rise to an increase in BLEU (Bilingual Evaluation Understudy) from 73.8% to 81.0% and an increase in the human evaluation score from 0.64 to 0.83. In the case of SFST, BLEU increased from 70.6% to 78.4% and the human evaluation score from 0.65 to 0.82