60 research outputs found

    Anticipating human presence for safer worker - robot shared workspaces

    Get PDF
    The co-existence for human and mobile robots in modern industrial environments is increasingly common. Safety primitive behaviours are typically built-in mobile robots, to ensure safety. However, when fleets of multiple robots are operating in such environments, robot path planning becomes complicated and is often left sub-optimal to avoid compromising human, equipment, or process safety. Enhanced performance can be achieved if path planning takes into account not just current human presence, but projected human movement trajectories. While this problem has received extensive attention in outdoor environments in autonomous driving contexts, its indoors workspace equivalent has received less attention. This paper presents an approach for human movement prediction in industrial work environments, based on past and current heatmap occupancy grids and convolutional neural networks. The adopted heatmap format is appropriate for dealing with privacy concerns so as to avoid individual person identification. Obtained results from a range of simulation data are presented, following by a discussion on limitations, and challenges to be handled by further work

    Reducing human effort in engineering drawing validation.

    Get PDF
    Oil & Gas facilities are extremely huge and have complex industrial structures that are documented using thousands of printed sheets. During the last years, it has been a tendency to migrate these paper sheets towards a digital environment, with the final end of regenerating the original computer-aided design (CAD) projects which are useful to visualise and analyse these facilities through diverse computer applications. Usually, this was done manually by re-sketching each page using CAD applications. Nevertheless, some applications have appeared which generate the CAD document automatically given the paper sheets. In this last case, the final document is always verified by an engineer due to the need of being a zero-error process. Since the need of an engineer is absolutely accepted, we present a new method to reduce the required engineer working time. This is done by highlighting the digitised components in the CAD document that the automatic method could have incorrectly identified. Thus, the engineer is required only to look at these components. The experimental section shows our method achieves a reduction of approximately 40% of the human effort keeping a zero-error process

    The Spanish water ?pressure cooker?: Threading the interplay between resource resilient water governance outcomes by strengthening the robustness of water governance processes.

    Get PDF
    This paper uses the metaphor of a pressure cooker to highlight how water problems in Spain are highly geographical and sectorial in nature, with some specific hotspots which raise the temperature of the whole water complex system, turning many potentially solvable water problems into ?wicked problems?. The paper discusses the tendency for water governance to be hydrocentric, when often the drivers and in turn the ?solutions? to Spanish water problems lie outside the water sphere. The paper analyzes of the current water governance system by looking at water governance as both a process, and its key attributes like participation, trans- parency, equity and rule of law, as well as an analysis of water governance as an outcome by looking at efficiency and sustainability of water use in Spain. It concludes on the need to have a deeper knowledge on the interactions of water governance as a process and as an outcome and potential synergies and arguing that water governance is an inherently political process which calls for strengthening the capacity of the system by looking at the interactions of these different governance attributes

    Electrodynamic single-particle trap integrated into double-cavity ring-down spectroscopy for light extinction

    Get PDF
    The study of the interaction of light with matter upon changing environmental conditions requires new platforms that provide accurate and reliable measurements. One suitable technique for studying such interaction uses electrodynamic traps to levitate micro or nanoparticles in combination with an optical interrogation technique, but improvements and new developments that complement spectroscopic information are necessary. Here, we use a Paul Electrodynamic Trap (PET) coupled to a Double-Cavity Ring Down Spectroscopy (D-CRDS) to measure the extinction cross section of single levitated particles at two different wavelengths (405 and 532 nm). The level of control achieved over the motion and stability is such that the particle can be consecutively placed at the central maximum of two independent TEM00 Gaussian modes of the ring-down cavities. Therefore, we can directly measure the dynamic change of the extinction cross section of a single particle at two different wavelengths. The combination of simulations using Mie theory and experiments demonstrates the potential of this robust and versatile setup applied to 1,2,6-hexanetriol particles. Unlike standard methods, our system provides crucial information of drastic and reversible change in the extinction cross-section of a sodium chloride particle in efflorescence and deliquescence points, indicating changes in solute mass, charge, refractive index, sphericity and size during the dehydration and hydration processes.Spanish Ministry of Science and Innovation through projects ELPIS (PID2020-12001-5RB-I00)Junta de Andalucía Excellence projects ADAPNE (P20-00136)AEROPRE (P-18-RT-3820)NANOHYBRID (AFQM-644-UGR20) FEDER Una manera de hacer EuropaEQC2019-006423-Pthe European Union's Horizon 2020 research and innovation program through project ACTRIS.IMP (grant agreement No 871115)ATMO-ACCESS (grant agreement No 22 101008004)ACTRIS-España (RED2022-134824-E)University of Granada Plan Propio through Excellence Research Unit Earth Science and Singular Laboratory AGORA (LS2022-1) programs

    An Update on Corneal Biomechanics and Architecture in Diabetes

    Get PDF
    In the last decade, we have witnessed substantial progress in our understanding of corneal biomechanics and architecture. It is well known that diabetes is a systemic metabolic disease that causes chronic progressive damage in the main organs of the human body, including the eyeball. Although the main and most widely recognized ocular effect of diabetes is on the retina, the structure of the cornea (the outermost and transparent tissue of the eye) can also be affected by the poor glycemic control characterizing diabetes. e different corneal structures (epithelium, stroma, and endothelium) are affected by specific complications of diabetes. e development of new noninvasive diagnostic technologies has provided a better understanding of corneal tissue modifications. e objective of this review is to describe the advances in the knowledge of the corneal alterations that diabetes can induc

    Estudios sefardíes dedicados a la memoria de Iacob M. Hassán (ź"l)

    Get PDF
    Elena Romero y Aitor García Moreno son los editores de este volumen.[EN] This work aims to honour Iacob. M. Hassán, who set up, promoted, and for decades maintained, the CSIC's School of Sephardic studies (Escuela de Estudios Sefardíes) in Madrid. It comprises a collection of articles on the Jews in the medieval Spanish kingdoms, along with other articles on a wide variety of language issues, and the study and publication of literary works produced or handed down by the Sephardim of the Balkans and Morocco between the sixteenth and the twentieth centuries, such as biblical commentaries and lexicons, liturgical poetry, rabbinic literature, biographies, folk tales, popular folk songs, ballads, and modern songs ... These studies also include an article by Iacob. M. Hassán published here for the first time in the form of a facsimile of his original typed manuscript. The work is preceded by a foreword and an unpublished text of one of his lectures, which contains a wealth of autobiographical information, as well as his views on the vicissitudes of Sephardic Studies as an academic discipline.[ES] Con esta obra se quiere honrar al creador, impulsor y mantenedor durante decenios de la llamada Escuela de Estudios Sefardíes del CSIC (Madrid). Se recogen en ella artículos relativos a los judíos en los reinos hispanos medievales, y otros dedicados a muy variados temas de lengua, y al estudio y edición de obras literarias producidas o transmitidas por los sefardíes de los Balcanes y de Marruecos entre el siglo XVI y el XX: comentarios y léxicos bíblicos, poesía litúrgica, literatura rabínica, biografías, cuentos tradicionales, coplas, romances, cancionero moderno, etc., etc. Entre los estudios se incluye además, como primicia, un artículo mecanografiado de Iacob. M. Hassán que se publica por primera vez en edición facsímil. La obra va precedida de un Prólogo y del texto inédito de una de sus conferencias, en la que aporta numerosos datos autobiográficos, así como su visión sobre los avatares de los Estudios Sefardíes como disciplina académica
    corecore