Open world reasoning in semantics-aware access control: A preliminary study

We address the relationships between theoretical foundations of Description Logics and practical applications of security-oriented Semantic Web techniques. We first describe the advantages of semantics-aware Access Control and review the state of the art; we also introduce the basics of Description Logics and the novel semantics they share. Then we translate the principle underlying the Little House Problem of DL into a real-world use case: by applying Open World Reasoning to the Knowledge Base modelling a Virtual Organization, we derive information not achievable with traditional Access Control methodologies. With this example, we also show that a general problem such as ontology mapping can take advantage of the enhanced semantics underlying OWL Lite and OWL DL to handle under-specified concepts

Satellite-derived UV climatology at Escudero station, Antarctic Peninsula

We have used data from the Ozone Monitoring Instrument (OMI) aboard NASA's Earth Observing System (EOS) Aura satellite over the period 2004-11 to describe the characteristics of surface ultraviolet (UV) irradiance at Escudero Station (62°12′S, 58°57′W). The station is located on King George Island (northern Antarctic Peninsula). Temperatures in summer are frequently above 0°C, and the surrounding ocean is typically ice-free. We found that the UV irradiance at Escudero is driven by the Antarctic ozone hole (which annually in spring leads to significant variations in the ozone) and by clouds (which are more frequent and have a larger optical depth compared with other Antarctic sites). The combined effect of ozone and clouds led to significant variations in the surface UV. The variability (taken as the standard deviation of the UV estimates retrieved from OMI) is typically greater than 30% at Escudero, but may reach values greater than 50% in spring. The consistency of OMI-derived data was checked by using ground-based spectral measurements carried out under controlled conditions in January 2011. © 2013 Antarctic Science Ltd

The world's highest levels of surface UV

Chile's northern Atacama Desert has been pointed out as one of the places on earth where the world's highest surface ultraviolet (UV) may occur. This area is characterized by its high altitude, prevalent cloudless conditions and relatively low total ozone column. Aimed at detecting those peak UV levels, we carried out in January 2013 ground-based spectral measurements on the Chajnantor Plateau (5100 m altitude, 23°00′S, 67°45′W) and at the Paranal Observatory (2635 m altitude, 24°37′S, 70°24′W). The UV index computed from our spectral measurements peaked at 20 on the Chajnantor Plateau (under broken cloud conditions) and at 16 at the Paranal Observatory (under cloudless conditions). Spectral measurements carried out in June 2005 at the Izaña Observatory (2367 m altitude, 28°18′N, 16°30′W) were used for further comparisons. Due to the differences in sun-earth separation, total ozone column, altitude, albedo, aerosols and clouds, peak UV levels are expected to be significantly higher at southern hemisphere sites than at their northern hemisphere counterparts. © 2014 The Royal Society of Chemistry and Owner Societies

Total wrist arthrodesis with and without arthrodesis of the carpoMetacarpal joint (WAWWAM):study protocol

Abstract Background It is controversial whether or not the carpometacarpal joint (CMCJ) should be included in total wrist arthrodesis (TWA). Complications commonly occur at this site and studies examining its inclusion and exclusion are conflicting. A randomised clinical trial comparing wrist arthrodesis with CMCJ arthrodesis and spanning plate to wrist arthrodesis with CMCJ preservation and non-CMCJ spanning plate has not been performed. Method A single centre randomised clinical trial including 120 adults with end-stage isolated wrist arthritis will be performed to compare TWA with and without the CMCJ included in the arthrodesis. The primary outcome is complications in the first post-operative year. Secondary outcomes are Disabilities of the Arm, Shoulder and Hand (DASH) score, Patient Rated Wrist Evaluation (PRWE) and grip strength measured at 1, 2 and 5 years. Late complications, return to work and satisfaction will also be recorded. Discussion It is unknown whether the CMCJ should be included in TWA. This trial will contribute to an improved understanding of optimal management of the CMCJ in total wrist arthrodesis. Trial registration This trial was prospectively registered with the Australia New Zealand Clinical Trials Registry with identifying number ACTRN12621000169842 on the 16th February 2021. WHO: U1111–12626523. ANZCTR: ACTRN1262100016984

Optimization of DC reactive magnetron sputtering deposition process for efficient YSZ electrolyte thin film SOFC

International audienceYttria-stabilized zirconia (YSZ, ZrO2:Y2O3) thin films were deposited by reactive DC magnetron sputtering with a high deposition rate from a metallic target of Zr/Y in an argon/oxygen atmosphere. Plasma parameters and composition analysis of the gas phase reveal that the sputtering process in the "compound" mode is reached for a 2.5 sccm oxygen flow rate. Deposition onto silicon in "metal" mode at a flow rate close to the transition, allows obtaining at very high deposition rates (> 10 µm.h-1) a compact columnar stoichiometric crystallized YSZ film. When deposited on NiO YSZ commercial anode, the obtained coatings show the same properties. In spite of the complexity of the substrate (roughness and porosity), a compact and conformed layer was formed. Annealing treatments in air or hydrogen do not significantly alter the structure of the layers. Electrochemical test at 850°C with a screen-printed LSM (LaSrMnO3) cathode exhibits a satisfying gastightness (OCV=900 mV) and a maximum power density of 350 mW.cm-2

Estudio de prefactibilidad para la instalación de una planta de indumentaria deportiva con dispositivos GPS para la gestión del rendimiento deportivo

El presente proyecto de investigación tiene como finalidad evaluar la factibilidad económica, tecnológica, financiera y ambiental de instalar una planta para la producción de indumentaria deportiva con dispositivos GPS para la gestión del rendimiento deportivo. Se considerará que la vida útil del proyecto será de 5 años. La investigación tiene como público objetivo las instituciones educativas y deportivas en Lima Metropolitana. Existen cuatro segmentos deportivos en el cual, el proyecto realizará la investigación: fútbol profesional peruano, divisiones formativas de fútbol de menores, universidades y colegios. El producto se venderá en kits deportivos directamente a las instituciones, en el cual, llevará dentro el chaleco y el sensor GPS. La planta de producción se ubicará en el departamento de Lima Metropolitana y en el distrito de Santa Anita. Se determinó que la materia prima se podrá conseguir localmente en el país, tanto como la tela de nylon y los componentes electrónicos. Las máquinas y equipos para emplear son manuales y semi automáticas. Respecto al personal directo e indirecto, se contarán con 7 colaboradores administrativos, 1 colaborador indirecto y 13 operarios. Respecto a la inversión total del proyecto, se estimó que será por 393 336 soles, en el cual el 60% será del propio capital de los accionistas y el 40% será financiado con una tasa efectiva anual de 19.44% Cabe resaltar que, para el servicio de la deuda se consideró un año pre operativo y un periodo de gracia parcial con cuotas crecientes. Finalmente se determinó que el proyecto es económica y financieramente viable, con una utilidad neta al final de la vida útil del proyecto por 204 761.18 soles. Tanto el VAN económico y financiero son superiores a cero, y el TIR es superior al COK. Respecto al periodo de recupero, tanto para el ámbito económico y financiero es de 4 años aproximadamente.The purpose of this research project is to evaluate the economic, technological, financial, and environmental feasibility of installing a plant for the production of sportswear with GPS devices for the management of sports performance. The useful life of the project will be 5 years The research is aimed at educational and sports institutions in Lima Metropolitana. There are four sports segments in which the project will carry out the research: Peruvian professional soccer, youth soccer training divisions, universities and schools. The product will be sold in sports kits directly to institutions, in which it will carry the vest and the GPS sensor. The production plant will be located in the department of Lima and in the district of Santa Anita. It was determined that the raw material can be obtained locally in the country, as well as the nylon fabric and electronic components. The machines and equipment to be used are manual and semi-automatic. Regarding company’s workforce, there will be 7 administrative collaborators, 1 indirect collaborator and 13 operators. Regarding the total investment of the project, it is estimated that it will be for 393 336 soles, in which 60% will be from the shareholders own capital and 40% will be financed by the bank, with an effective annual rate of 19.44 %. It should be noted that, for the debt service, a pre-operational year and a partial grace period with increasing installments were considered. Finally, it was determined that the project is economically and financially viable, with a net profit at the end of the useful life of the project of 204 761.18 soles. Both the economic and financial NPV are greater than zero, and the IIR is greater than the COK. Regarding the payback period, for the economic and financial sphere is approximately 4 years

COLORECTAL CANCER: AN UPDATE ON THE EFFECTS OF LYCOPENE ON TUMOR PROGRESSION AND CELL PROLIFERATION

Colorectal cancer (CRC) is one of the most common cancers worldwide. Various factors, including oxidative stress, where excessive productions of reactive oxygen species (ROS) and reactive nitrogen species (RNS) occur, contribute to its pathogenesis. Numerous studies have investigated the effect of antioxidant substances derived from food such fruits and vegetables; however, data on Lycopene are still rare. Stidies on HT-29 colorectal cancer cells and on animal models have shown that Lycopene has effects on cell proliferation and on the progression of the CRC by interacting with variuos cellular signaling pathways. this analysis of the literature focused on the antioxidant effect of Lycopene, a substance that is found in the tomato

PRENATAL DEVELOPMENT OF TEMPORO-MANDIBULAR JOINTS: STATE OF ART

The aim of this work is to analyze the state of the art of temporo-mandibular joint (MJ) to understand the varoius stage of the development of the same during embryogenesis. Various theories have been analyzed, such as the formation of apoptotic or the important role of growth factors, or the Valencia et studies in which are analyzed to numerous articular diseases in various stage of development. By the aforementioned studies show that many factors, of a different nature, are to be involved in the prenatal developlment of this important joint

INFLAMMATORY BOWEL DISEASE AND EXTRAINTESTINAL MANIFESTATIONS

Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, are chronic and recurrent inflammatory diseases. Although the typical symptoms are localized in the gastrointestinal tract, there are also extraintestinal manifestations (EIMs) associated with IBD, probably caused by immune reactions secondary to the pathology of origin. Anybody can be affected by EIMs, which can be dermatological, pulmonary, ocular, musculoskeletal, hepatobiliary and neurological, et al. This represents a therapeutic challenge for clinicians, who must first establish a diagnostic and then a multidisciplinary therapeutic path, in order to guarantee an optimal quality of life for the patient