Engineering entanglement Hamiltonians with strongly interacting cold atoms in optical traps

We present a proposal for the realization of entanglement Hamiltonians in one-dimensional critical spin systems with strongly interacting cold atoms. Our approach is based on the notion that the entanglement spectrum of such systems can be realized with a physical Hamiltonian containing a set of position-dependent couplings. We focus on reproducing the universal ratios of the entanglement spectrum for systems in two different geometries: a harmonic trap, which corresponds to a partition embedded in an infinite system, and a linear potential, which reproduces the properties of a half-partition with open boundary conditions. Our results demonstrate the possibility of measuring the entanglement spectra of the Heisenberg and XX models in a realistic cold-atom experimental setting by simply using gravity and standard trapping techniques.Comment: 11 pages, 6 figure

That Should Be Left to Doctors, That's What They are There For! - Exploring the Reflexivity and Trust of Young Adults When Seeking Health Information

This paper explores the health information-seeking practices of healthy young adults and how they assess and rank sources of information through a qualitative study. The findings show that participants (a) are strongly committed to searching for information about health and lifestyle, especially via the Internet; (b) healthcare professionals were perceived as the most reliable source of health information and advice; (c) online health information, although frequently accessed and experienced as empowering, is seen as a potentially unreliable source. Findings evidence how becoming better informed about health-related topics plays a pivotal role in individuals’ lives, most notably by using the Internet. Participants were able to reflect about what it means to know about health. The construction of trust regarding health information involved a heuristic process vis-à-vis source reliability and perceived credibility that places doctors as the most trustworthy medium of medical advice and health information. We conclude that participants’ trust toward professionals suggests the preference and need for more personalized care; and it is a response to the ambiguity and uncertainty that permeates the health information landscape, particularly that which is web-based.This article draws on research conducted as part of the project “Evaluating the State of Public Knowledge on Health and Health Information in Portugal” (HMSP/IISE/SAU-ICT/0003/2009), funded by the Portuguese Foundation for Science and Technology (FCT) within the Harvard Medical School-Portugal Program on Translational Research and Health Information. Part of this work has been financed by FEDER funds through the COMPETE 2020—POCI, Portugal 2020, and by Portuguese funds through FCT/Ministério da Ciência, Tecnologia e Inovação—project “Institute for Research and Innovation in Health Sciences” (POCI-01-0145-FEDER-007274). ÁM (SFRH/BPD/88647/2012) and LA (SFRH/BD/78949/2011) are both supported by fellowships from FCT. The authors would like to thank all the participants in this study, the coordinators of the EpiTeen study, and the administrative staff of the Epidemiology department of the Faculty of Medicine of the University of Porto. The authors would also like to thank Liliana Gil and Patrícia Ferreira (Centre for Social Studies, University of Coimbra, Portugal) for their collaboration in part of the interviews, and Rute Verdade for her help in proofreading this text. The authors are also grateful to anonymous reviewers for their helpful comments and suggestions that very much improved the quality of the paper

Dermite de Contacto à Mitomicina C. 6 Casos

A Mitomicina C está entre uma variedade de agentes quimioterapêuticos intravesicais actualmente disponíveis para o tratamento do carcinoma superficial da bexiga. Cerca de9% destes doentes desenvolve reacções adversas cutâneas, geralmente dermites de contacto, localizadas nas mãos, pés, genitais, ou erupções mais disseminadas. Descrevem-se 6 casos de dermite de contacto alérgica à Mitomicina C, observados entre Junho/2004 e Março/2005,emcinco doentes do sexo masculino e umdo sexo feminino, com uma idade média de 70 anos

Evolution strategies combined with central pattern generators for head motion minimization during quadruped robot locomotion

In autonomous robotics, the head shaking induced by locomotion is a relevant and still not solved problem. This problem constraints stable image acquisition and the possibility to rely on that information to act accordingly. In this article, we propose a movement controller to generate locomotion and head movement. Our aim is to generate the head movement required to minimize the head motion induced by locomotion itself. The movement controllers are biologically inspired in the concept of Central Pattern Generators (CPGs). CPGs are modelled based on nonlinear dynamical systems, coupled Hopf oscillators. This approach allows to explicitly specify parameters such as amplitude, offset and frequency of movement and to smoothly modulate the generated oscillations according to changes in these parameters. Based on these ideas, we propose a combined approach to generate head movement stabilization on a quadruped robot, using CPGs and an evolution strategy. The best set of parameters that generates the head movement are computed by an evolution strategy. Experiments were performed on a simulated AIBO robot. The obtained results demonstrate the feasibility of the approach, by reducing the overall head movement