La condición trans y lo performativo de la vida transnacional para el etnógrafo

Introducción: Este texto explica un concepto de autoría propia llamado la condición trans o lo trans. Dicho concepto espera contribuir a la comprensión de los procesos subyacentes de desterritorialización en las sociedades transnacionales; se propone reflexionar sobre el cuerpo transnacionalizado mediante las prácticas del lenguaje en los enunciados performativos acción-enunciación, que permitan acopiar mayores elementos parta estudiar otros ámbitos de la vida de los migrantes transnacionales en el llamado tercer espacio.  Basado en reflexiones derivadas del trabajo de campo, el texto también explora el marco de referencia geoespacial como una práctica performativa del etnógrafo transnacional al situarse en un campo etnográfico como espacio social disperso y desbordado, de esta forma, la percepción del investigador deberá ser consecuente con esa condición trans. Como conclusión, se destaca la importancia de los marcos de referencia para comprender los procesos de la vida transnacional tanto de los interlocutores (informantes) como de los investigadores especializados en la etnografía en contextos desterritorializados.Método: Es una investigación de corte etnográfico con un campo social transnacional, el énfasis central es profundizar en el tercer espacio mediante la reflexión del cuerpo a través de los enunciados performativos. La investigación sintetiza experiencias de trabajo de campo de diversas investigaciones propias durante los años 2002-2011, realizadas con transmigrantes mexicanos indígenas y no indígenas, al igual que con indígenas ecuatorianos dispersos en la Unión Europea.Resultados: El análisis de los enunciados performativos puede construir un mejor entendimiento de los procesos de desterritorialización dentro de las sociedades transnacionales, así como también, el concepto de condición trans o lo trans, puede aportar reflexiones concernientes a los marcos de referencia en la etnografía transnacional. Lo anterior, resulta fundamental ya que la simultaneidad o sincronía obligan a adoptar marcos analíticos que expongan un campo etnográfico en tetradimensionalidad fuera de la lógica euclidiana.Discusiones: el concepto de condición trans o lo trans posee los siguientes argumentos a discutir: atención central en la desterritorialización, el uso del lenguaje a través de los enunciados performativos para comprender la cultura, la importancia de los marcos de referencia para el estudio de las sociedades transnacionales, la simultaneidad o sincronía como elemento integrador de lo trans y la transnacionalidad.Introduction: This text explains a concept of self-authorship called the trans or trans condition, this concept hopes to contribute to the understanding of the underlying processes of deterritorialisation in transnational societies; it is proposed to reflect on the body through the language practices of the action-enunciation performative statements, that allow to gather more elements to study other areas of life of transnational migrants in the so-called third space. But also, the text explores the geospatial framework as a performative practice of the transnational ethnographer as it is placed in an ethnographic field as a dispersed and overflowing social space, so the researcher's perception must be consistent with this trans condition.Method: It is an ethnographic research with a transnational social field, the central emphasis is to deepen the third space through the reflection of the body through the performative statements. The research synthesises fieldwork experiences of several own investigations during the years 2002-2011, with Mexican and non-indigenous Mexican transmigrants as well as Ecuadorian indigenous people scattered throughout the European Union.Results: The analysis of performative statements can build a better understanding of the processes of deterritorialisation within transnational societies, as well as the concept trans or trans condition, can provide reflections concerning the frames of reference in transnational ethnography. This is fundamental because the simultaneity or synchrony forces to adopt analytical frameworks that expose an ethnographic field in four-dimensionality outside Euclidean logic.Discussions: The concept of trans or trans condition has the following arguments to discuss: central focus on deterritorialisation, use of language through performative statements to understand culture, the importance of frames of reference for the study of Transnational societies, simultaneity or synchrony as an integrating element of trans and transnationality.</jats:p

Protección de datos médicos e Internet

This report presents a discussion of the adventages electronic clinical data gives, not only to the medical staff (helping them to get more accurate data about their patients) but also to the patient (receiving a better medical care). Then we present a study of the current spanish and european laws that rule about protection of medical data. Finally we present the characteristics a distributed information system managing and storing medical data should have, and the security measures to be taken if such a system is connected to a public network such as Internet.Postprint (published version

UCTx: a multi-agent system to assist a transplant coordination unit

We present a system called UCTx, designed to model and automate some of the tasks performed by a Transplant Coordination Unit (UCTx) inside a Hospital. The aim of this work is to show how a multi-agent approach allows us to describe and implement the model, and how UCTx is capable of dealing with another multi-agent (Carrel, an Agent Mediated Institution for the exchange of Human Tissues among Hospitals for Transplantation) in order to meet its own goals, acting as the representative of the hospital in the negotiation. As an example we introduce the use of this Agency in the case of Cornea Transplantation.Postprint (published version

General results on the convergence of multipoint Hermite-Padé approximants of Nikishin systems

19 pages, no figures.-- MSC1991 codes: Primary 30E10, 42C05.MR#: MR2263738 (2007g:42041)Zbl#: Zbl 1105.30024We consider simultaneous approximation of Nikishin systems of functions by means of rational vector functions which are constructed interpolating along a prescribed table of points. We give general conditions for the uniform convergence of such approximants with a geometric rate under very weak assumptions.The work of both authors was supported by Ministerio de Ciencia y Tecnología under grant BFM 2003-06335-C03-02. The second author was also partially supported by NATO PST.CLG.979738 and INTAS 03-51-6637.Publicad

Generalized Hermite-Padé approximation for Nikishin systems of three functions

9 pages, no figures.-- MSC1991 code: Primary 42C05.-- Issue title: "Special Functions, Information Theory, and Mathematical Physics". Special issue dedicated to Professor Jesús Sánchez Dehesa on the occasion of his 60th birthday.Zbl#: Zbl pre05650072Nikishin systems of three functions are considered. For such systems, the rate of convergence of simultaneous interpolating rational approximations with partially prescribed poles is studied. The solution is described in terms of the solution of a vector equilibrium problem in the presence of a vector external field.First author’s research supported by grants MTM 2006-13000-C03-02 from Ministerio de Ciencia y Tecnología and CCG 06–UC3M/ESP–0690 of Universidad Carlos III de Madrid-Comunidad de Madrid and by grant SFRH/BPD/31724/2006 from Fundação para a Ciência e a Tecnologia. Second author’s research supported by grants MTM 2006-13000-C03-02 from Ministerio de Ciencia y Tecnología and CCG 06–UC3M/ESP–0690 of Universidad Carlos III de Madrid-Comunidad de Madrid.Publicad

Rate of convergence of generalized Hermite-Padé approximants of Nikishin systems

32 pages, no figures.-- MSC1991 code: Primary, 42CD5.MR#: MR2186304 (2006h:41017)Zbl#: Zbl 1136.42306We study the rate of convergence of interpolating simultaneous rational approximations with partially prescribed poles to so-called Nikishin systems of functions. To this end, a vector equilibrium problem in the presence of a vector external field is solved which is used to describe the asymptotic behavior of the corresponding second-type functions which appear.The work of both authors was supported by the Ministerio de Ciencia y Tecnología under grant BFM 2003-06335-C03-02. The second author was also partially supported by NATO PST.CLG.979738 and INTAS 03-51-6637.Publicad

On perfect Nikishin systems

12 pages, no figures.-- MSC1991 code: Primary 42C05.-- Publisher's full-text version available Open Access at: http://www.heldermann-verlag.de/cmf/cmf02/cmf0224.pdfMR#: MR2038130 (2005c:42026)Zbl#: Zbl 1065.42020We prove perfectness for Nikishin systems made up of three functions and apply this to the convergence of the associated Hermite-Padé approximant.The work of both authors was partially supported by Dirección General de Enseñanza Superior under grant BFM2000-0206-C04-01 and the second author by grants PRAXIS XXI BCC-22201/99 and INTAS 00-272.Publicad

Heart Transplant: Current Indications and Patient Selection

Heart transplant remains the gold standard treatment for end-stage heart failure, in spite of the recent advances in pharmacological treatment and device therapy. As expected, since the first heart transplant was performed 50 years ago, outcomes in heart transplant have continued to improve over the last decades focusing on perioperative management, the availability of newer and better mechanical circulatory support before and after heart transplant and immunosuppressive drug development. Nonetheless, in the last years we have witnessed a significant drop in the heart donor’s pool as the greatest limiting factor, coupled with a rising number of advanced heart failure patients. Moreover, the difficulty in handling these patients, with multiple and more complex comorbidities, is continuously increasing. More importantly and despite these difficulties, conditional half-life in transplanted patients has nowadays reached 12 years of life expectancy. Thus, besides trying to increase donor numbers, candidate selection emerges as one of the most challenging issues for heart transplant programs. In this chapter we review the latest knowledge on indications for heart transplant, as well as the available screening and optimization tools in candidate selection in order to continue improving outcomes

Extending the Carrel system to mediate in the organ and tissue allocation processes: a first approach

In this paper we extend the formalization of Carrel, a virtual organization for the procurement of tissues for transplantation purposes, in order to model also the procurement of human organs for transplants. We will focus in the organ allocation process to show how it can be formalized with the ISLANDER formalism. Also we present a first mechanism to federate the institution in several geographically-distributed platforms.Postprint (published version