Alpha-dense curves in infinite dimensional spaces

The theory of α−dense curves in the euclidean space Rn , n ≥ 2, was developed for finding algorithms for Global Optimization of multivariable functions ([1], [6]). The α-dense curves, considered as a generalization of Peano curves or space-filling curves, densify the domain of definition D of a multivariable function f in the sense of the Hausdorff metric. Then, the restriction of f on an α−dense curve γ, contained in D, is a univariable function fγ for which will have less difficulty to locate its global minimum. In this paper we shall study some properties of α−dense curves that are Lipschitzian. Moreover, we shall point out that this theory of α−dense curves is characteristic of the finite dimensional spaces. In fact, we shall prove that a Banach space has finite dimension iff its unit ball can be densified with arbitrary small density α. From this, we shall deduce the classical Theorem of Riesz. Finally, we shall construct a family of infinite dimensional α−dense curves, whith controlled density α, in the Hilbert parallelotope

Las agresiones al patrimonio litoral de la provincia de Alicante: paleo paisajes y patrimonio arqueológico en riesgo

Le patrimoine environnemental et archéologique situé sur le littoral de la province d’Alicante (Espagne), présente non seulement les risques qui sont inhérents à cet espace naturel mais aussi les dangers provenant de l’intense occupation urbanistique, développée par le secteur touristique depuis les années 1960. Sur une étroite bande de 100 mètres à compter du rivage il y a 58 sites archéologiques de différentes époques, qui témoignent tous d’un degré plus ou moins élevé de détérioration en raison des processus naturels et anthropiques. À partir des études géomorphologiques nous avons caractérisé le risque d’érosion et/ou de sédimentation. À partir de l’analyse évolutive de l’urbanisme touristique nous avons évalué l’impact sur le patrimoine en nous basant sur l’étude de divers cas paradigmatiques. Nous proposons une analyse intégrée des travaux de géomorphologie, de catalogage archéologique et d’urbanisme afin de définir les risques touchant le patrimoine archéologique du littoral. Nous en concluons que le principal facteur de risque provient de la faible sensibilité sociale.The environmental and archaeological heritage on the coast of Alicante province (Spain) is threatened not only by risks inherent to its natural environment, but also by intense urban occupation, encouraged by the development of tourism since the 1960s. A total of 58 archaeological sites from different periods are found on a narrow strip, 100 m away from the sea shore: they are all affected, to a greater or lesser degree, by natural and anthropic processes. Erosion and/or sedimentation risks were characterised through geomorphological studies. Based on an evolutionary analysis of tourist urbanism, we evaluated the impact on heritage by examining paradigmatic cases. To determine the risks to the coast’s archaeological heritage, an integrated analysis involving geomorphology, archaeological cataloguing and urban planning studies was performed. The main risk factor was found to be low social sensitivity.El patrimonio medioambiental y arqueológico ubicado en el litoral de la provincia de Alicante (España), a los riesgos propios de ese espacio natural suma los derivados de la intensa ocupación urbanística, desarrollada por el negocio turístico desde los años 1960. En la estrecha franja de 100m desde el borde del mar existen 58 yacimientos arqueológicos de diferentes épocas, todos afectados, en mayor o menor, medida por los procesos naturales y antrópicos. Desde estudios geomorfológicos se caracteriza el riesgo de erosión y/o sedimentación. Desde el análisis evolutivo del urbanismo turístico se evalúa el impacto sobre el patrimonio, mediante el estudio de casos paradigmáticos. Se propone un análisis integrado de trabajos de geomorfología, de catalogación arqueológica y de urbanismo, para definir los riesgos que afectan al patrimonio arqueológico del litoral. Se concluye que el principal factor de riesgo es la baja sensibilidad social

PROSHADE Protocol: Designing and Evaluating a Decision Aid for Promoting Shared Decision Making in Opportunistic Screening for Prostate Cancer: A Mix-Method Study

Background: Opportunistic prostate-specific antigen (PSA) screening may reduce prostate cancer mortality risk but is associated with false positive results, biopsy complications and overdiagnosis. Although different organisations have emphasised the importance of shared decision making (SDM) to assist men in deciding whether to undergo prostate cancer screening, recent evaluations show that the available decision aids fail to facilitate SDM, mainly because they do not consider the patients’ perspective in their design. We aim to systematically develop and test a patient decision aid to promote SDM in prostate cancer screening, following the Knowledge to Action framework. Methods: (1) Feasibility study: a quantitative survey evaluating the population and clinician (urologists and general practitioners) knowledge of the benefits and risks derived from PSA determination and the awareness of the available recommendations. Focus groups to explore the challenges patients and clinicians face when discussing prostate cancer screening, the relevance of a decision aid and how best to integrate it into practice. (2) Patient decision aid development: Based on this data, an evidence-based multicomponent SDM patient decision aid will be developed. (3) User-testing: an assessment of the prototype of the initial patient decision aid through a user-testing design based on mix-methods (questionnaire and semi-structured review). The decision aid will be refined through several iterative cycles of feedback and redesign. (4) Validation: an evaluation of the patient decision aid through a cluster-randomised controlled trial. Discussion: The designed patient decision aid will provide balanced information on screening benefits and risks and should help patients to consider their personal preferences and to take a more active role in decision making. Conclusions: The well-designed patient decision aid (PDA) will provide balanced information on screening benefits and risks and help patients consider their personal preferences.Article funded by the Instituto de Salud Carlos III, Ministry of Science and Innovation of the Government of Spain (Group 26 of the Centro de Investigación Biomédica en Red Epidemiología y Salud Pública, CIBERESP). Research funded by the research project of the Instituto de Salud Carlos III, code PI20/01334, Principal Investigator Dr. Blanca Lumbreras Lacarra, co-financed with FEDER funds from the European Union “A way of doing Europe”

Red de tutores del Programa de Acción Tutorial de la Facultad de Económicas (PATEC)

El Plan de Acción Tutorial (PAT, PATEC en la Facultad de Ciencias Económicas y Empresariales) se viene desarrollando en la Universidad de Alicante (UA) desde el curso 2005-2006. Tras más de una década de su puesta en marcha en la Facultad de Ciencias Económicas y Empresariales, el PATEC se ha ido consolidando año a año y, aunque son muchas sus fortalezas, existen aún ciertas debilidades que persisten a las que hay que dar respuesta. Para ello, en el curso 2013-2014 surge la Red de Tutores del PATEC como un punto de encuentro en el que reflexionar sobre el funcionamiento del Programa. En el curso 2015-2016 su objetivo es doble. Por un lado, y continuando la labor que comenzó en el curso anterior referida a analizar experiencias de acción tutorial en otras universidades españolas, extraer las buenas prácticas que supongan un nuevo impulso para el PATEC. Por otro, conocer la experiencia de la primera promoción de alumnos-tutores de la Facultad

Retos del PATEC ante la comparativa de otras experiencias de acción tutorial universitaria

Tras más de una década de la puesta en marcha del Programa de Acción Tutorial en la Facultad de Económicas siguen persistiendo debilidades que tratan de resolverse año a año. En este sentido, el Programa se ha tratado de mejorar desde la creación de la Red de Tutores del PATEC en el curso 2013-2014. Del trabajo de la Red ha surgido el Manual del tutor, entendido como un recurso que recopila la información básica que va a necesitar el tutor para orientar a su alumnado; la idea de implantar la figura del alumno-tutor en la Facultad para acercar el Programa al conjunto del alumnado; y en el presente curso se ha planteado estudiar la acción tutorial en otras universidades españolas con el objetivo de recopilar buenas prácticas y analizar la posibilidad de implementarlas en la Facultad. Esta comunicación recoge el trabajo realizado por la Red y se estructura de la siguiente manera: en primer lugar, se identifican las prácticas de acción tutorial de diversas universidades españolas; en segundo lugar, se comparan con las actividades realizadas en el marco del PATEC; y, finalmente, se proponen acciones que contribuyan a mejorar el funcionamiento del PATEC

Interventions in health organisations to reduce the impact of adverse events in second and third victims

Background Adverse events (AE) are also the cause of suffering in health professionals involved. This study was designed to identify and analyse organization-level strategies adopted in both primary care and hospitals in Spain to address the impact of serious AE on second and third victims. Methods A cross-sectional study was conducted in healthcare organizations assessing: safety culture; health organization crisis management plans for serious AE; actions planned to ensure transparency in communication with patients (and relatives) who experience an AE; support for second victims; and protective measures to safeguard the institution’s reputation (the third victim). Results A total of 406 managers and patient safety coordinators replied to the survey. Deficient provision of support for second victims was acknowledged by 71 and 61 % of the participants from hospitals and primary care respectively; these respondents reported there was no support protocol for second victims in place in their organizations. Regarding third victim initiatives, 35 % of hospital and 43 % of primary care professionals indicated no crisis management plan for serious AE existed in their organization, and in the case of primary care, there was no crisis committee in 34 % of cases. The degree of implementation of second and third victim support interventions was perceived to be greater in hospitals (mean 14.1, SD 3.5) than in primary care (mean 11.8, SD 3.1) (p?<?0.001). Conclusions Many Spanish health organizations do not have a second and third victim support or a crisis management plan in place to respond to serious AEs

The aftermath of adverse events in spanish primary care and hospital health professionals

Background Adverse events (AEs) cause harm in patients and disturbance for the professionals involved in the event (second victims). This study assessed the impact of AEs in primary care (PC) and hospitals in Spain on second victims. Methods A cross-sectional study was conducted. We carried out a survey based on a random sample of doctors and nurses from PC and hospital settings in Spain. A total of 1087 health professionals responded, 610 from PC and 477 from hospitals. Results A total of 430 health professionals (39.6%) had informed a patient of an error. Reporting to patients was carried out by those with the strongest safety culture (Odds Ratio –OR- 1.1, 95% Confidence Interval –CI- 1.0-1.2), nurses (OR 1.9, 95% CI 1.5-2.3), those under 50 years of age (OR 0.7, 95% CI 0.6-0.9) and primary care staff (OR 0.6, 95% CI 0.5-0.9). A total of 381 (62.5%, 95% CI 59-66%) and 346 (72.5%, IC95% 69-77%) primary care and hospital health professionals, respectively, reported having gone through the second-victim experience, either directly or through a colleague, in the previous 5 years. The emotional responses were: feelings of guilt (521, 58.8%), anxiety (426, 49.6%), re-living the event (360, 42.2%), tiredness (341, 39.4%), insomnia (317, 38.0%) and persistent feelings of insecurity (284, 32.8%). In doctors, the most common responses were: feelings of guilt (OR 0.7 IC95% 0.6-0.8), re-living the event (OR 0.7, IC95% o.6-0.8), and anxiety (OR 0.8, IC95% 0.6-0.9), while nurses showed greater solidarity in terms of supporting the second victim, in both PC (p?=?0.019) and hospital (p?=?0.019) settings. Conclusions Adverse events cause guilt, anxiety, and loss of confidence in health professionals. Most are involved in such events as second victims at least once in their careers. They rarely receive any training or education on coping strategies for this phenomenon

Isotemporal substitution of inactive time with physical activity and time in bed: cross-sectional associations with cardiometabolic health in the PREDIMEDPlus study

Background: This study explored the association between inactive time and measures of adiposity, clinical parameters, obesity, type 2 diabetes and metabolic syndrome components. It further examined the impact of reallocating inactive time to time in bed, light physical activity (LPA) or moderate-to-vigorous physical activity (MVPA) on cardio-metabolic risk factors, including measures of adiposity and body composition, biochemical parameters and blood pressure in older adults. Methods: This is a cross-sectional analysis of baseline data from 2189 Caucasian men and women (age 55-75 years, BMI 27-40 Kg/m2) from the PREDIMED-Plus study (http://www.predimedplus.com/). All participants had ≥3 components of the metabolic syndrome. Inactive time, physical activity and time in bed were objectively determined using triaxial accelerometers GENEActiv during 7 days (ActivInsights Ltd., Kimbolton, United Kingdom). Multiple adjusted linear and logistic regression models were used. Isotemporal substitution regression modelling was performed to assess the relationship of replacing the amount of time spent in one activity for another, on each outcome, including measures of adiposity and body composition, biochemical parameters and blood pressure in older adults. Results: Inactive time was associated with indicators of obesity and the metabolic syndrome. Reallocating 30 min per day of inactive time to 30 min per day of time in bed was associated with lower BMI, waist circumference and glycated hemoglobin (HbA1c) (all p-values < 0.05). Reallocating 30 min per day of inactive time with 30 min per day of LPA or MVPA was associated with lower BMI, waist circumference, total fat, visceral adipose tissue, HbA1c, glucose, triglycerides, and higher body muscle mass and HDL cholesterol (all p-values < 0.05). Conclusions: Inactive time was associated with a poor cardio-metabolic profile. Isotemporal substitution of inactive time with MVPA and LPA or time in bed could have beneficial impact on cardio-metabolic health