613 research outputs found
Enhancing adolescent reasoning skills through a video game program
Much research has been done on the benefits of video games in a physical education context (Camunas-Vega & Alcaide-Risoto, 2020; Fang et al., 2020). However,
little attention has so far been paid to the effectiveness of commercial video games
combined with actual basketball practice in helping students improve their reasoning skills (Chuang et al., 2021; Rogers et al., 2020). The study presents a quasiexperimental pre-post design with a control group in order to evaluate the impact
of a specific training program in reasoning with the video game NBA 2K16. A
convenience sample of 215 high school students participated in the study. Three
reasoning subscales of the Evalua-9 psycho-pedagogical test (inductive alfa=0.88; deductive alfa=0.85; spatial alfa=0.89) were used for data collection. Our findings show a
significant moderate effect in the students who participated in the training program.
An additional outcome was that sex differences in spatial and deductive reasoning
in the pre-test disappeared in the post-test. We discuss the educational implications
of the use of the video game as the main learning tool to enhance the reasoning
process of Secondary Education students in Physical Education
Transmisión de la propiedad, subrogación del comprador en los derechos del vendedor y pago por tercero.
Análisis desde el prisma de un caso práctico, de los efectos de la transmisión de la propiedad y el momento exacto en el que el adquirente se subroga en los derechos y obligaciones del transmitente. Estudio comparado de la figura del pago por tercero del artículo 1158 del Código Civil, y la novación regulada en los artículos 1203 y ss. del Código Civil, así como la posibilidad de concurrencia. <br /
Recommended from our members
National Study of United States Emergency Department Visits for Acute Pancreatitis, 1993–2003
Background: The epidemiology of acute pancreatitis in the United States is largely unknown, particularly episodes that lead to an emergency department (ED) visit. We sought to address this gap and describe ED practice patterns. Methods: Data were collected from the National Hospital Ambulatory Medical Care Survey between 1993 and 2003. We examined demographic factors and ED management including medication administration, diagnostic imaging, and disposition. Results: ED visits for acute pancreatitis increased over the study period from the 1994 low of 128,000 visits to a 2003 peak of 318,000 visits (p = 0.01). The corresponding ED visit rate per 10,000 U.S. population also increased from 4.9 visits (95%CI, 3.1–6.7) to 10.9 (95%CI, 7.6–14.3) (p = 0.01). The average age for patients making ED visits for acute pancreatitis during the study period was 49.7 years, 54% were male, and 27% were black. The ED visit rate was higher among blacks (14.7; 95%CI, 11.9–17.5) than whites (5.8; 95%CI, 5.0–6.6). At 42% of ED visits, patients did not receive analgesics. At 10% of ED visits patients underwent CT or MRI imaging, and at 13% of visits they underwent ultrasound testing. Two-thirds of ED visits resulted in hospitalization. Risk factors for hospitalization were older age (multivariate odds ratio for each increasing decade 1.5; 95%CI, 1.3–1.8) and white race (multivariate odds ratio 2.3; 95%CI, 1.2–4.6). Conclusion: ED visits for acute pancreatitis are rising in the U.S., and ED visit rates are higher among blacks than whites. At many visits analgesics are not administered, and diagnostic imaging is rare. There was greater likelihood of admission among whites than blacks. The observed race disparities in ED visit and admission rates merit further study
CIMAR, NIMAR, and LMMA: novel algorithms for thread and memory migrations in user space on NUMA systems using hardware counters
This paper introduces two novel algorithms for thread migrations, named CIMAR (Core-aware Interchange and Migration Algorithm with performance Record –IMAR–) and NIMAR (Node-aware IMAR), and a new algorithm for the migration of memory pages, LMMA (Latency-based Memory pages Migration Algorithm), in the context of Non-Uniform Memory Access (NUMA) systems. This kind of system has complex memory hierarchies that present a challenging problem in extracting the best possible performance, where thread and memory mapping play a critical role. The presented algorithms gather and process the information provided by hardware counters to make decisions about the migrations to be performed, trying to find the optimal mapping. They have been implemented as a user space tool that looks for improving the system performance, particularly in, but not restricted to, scenarios where multiple programs with different characteristics are running. This approach has the advantage of not requiring any modification on the target programs or the Linux kernel while keeping a low overhead.
Two different benchmark suites have been used to validate our algorithms: The NAS parallel benchmark, mainly devoted to computational routines, and the LevelDB database benchmark focused on read–write operations. These benchmarks allow us to illustrate the influence of our proposal in these two important types of codes. Note that those codes are state-of-the-art implementations of the routines, so few improvements could be initially expected. Experiments have been designed and conducted to emulate three different scenarios: a single program running in the system with full resources, an interactive server where multiple programs run concurrently varying the availability of resources, and a queue of tasks where granted resources are limited. The proposed algorithms have been able to produce significant benefits, especially in systems with higher latency penalties for remote accesses. When more than one benchmark is executed simultaneously, performance improvements have been obtained, reducing execution times up to 60%. In this kind of situation, the behaviour of the system is more critical, and the NUMA topology plays a more relevant role. Even in the worst case, when isolated benchmarks are executed using the whole system, that is, just one task at a time, the performance is not degradedThis research work has received financial support from the Ministerio de Ciencia e Innovación, Spain within the project PID2019-104834GB-I00. It was also funded by the Consellería de Cultura, Educación e Ordenación Universitaria of Xunta de Galicia (accr. 2019–2022, ED431G 2019/04 and reference competitive group 2019–2021, ED431C 2018/19)S
Salivary Testosterone and Cortisol as Biomarkers for the Diagnosis of Sarcopenia and Sarcopenic Obesity in Community-Dwelling Older Adults
Nowadays, the appearance of sarcopenia (S) or sarcopenic obesity (SO) is related to aging. According to the criteria of the European Working Group on Sarcopenia in Older People (EWGSOP), the feasibility of using salivary cortisol and testosterone levels was analyzed as diagnostic biomarkers of S or SO. One hundred and ninety non-institutionalized people aged ≥65 years were studied, independent of the activities of daily living (ADLs) (Barthel > 60), and sociodemographic variables were determined together with criteria for the diagnosis of S and SO including grip force, lower body strength, appendicular skeletal muscle mass, physical performance, total body fat percentage, body mass index (BMI), waist circumference, and triceps skinfold, together with the levels of salivary cortisol and testosterone. Our results reflected that women presented a higher prevalence of S and SO (21.2% and 30.2%, respectively). A significant difference was observed between salivary testosterone levels and the age of the participants with differences by sex. Testosterone values in men with S and SO were significantly lower (p = 0.043 and p = 0.048, respectively), which suggests a potential use of the biomarker for diagnostic purposes. No significant differences were shown with cortisol values
Assessment of the Evolution of a Landslide Using Digital Photogrammetry and LiDAR Techniques in the Alpujarras Region (Granada, Southeastern Spain)
In this work a detailed analysis of the temporal evolution of the Almegíjar landslide is presented. It is a rock slide located in the Alpujarras region (Granada, Spain) that has developed over the last 30 years. Six datasets and photogrammetric flights corresponding to the years 1956, 1984, 1992, 2001, 2008, and 2010 were surveyed. The more recent flight of 2010 combined an aerial digital camera and a LiDAR sensor and was oriented by means of in-flight data and tie points. This 2010 flight allowed for the generation of a reliable and high-precision Digital Terrain Model (DTM). The other flights were oriented using second-order ground control points transferred from the 2010 flight, and the corresponding DTMs were prepared by automatic matching and subsequent editing from the stereoscopic models. After comparing the DTMs of different dates, it has been observed that the landslide was triggered after 1984 and since then has evolved in an irregular pattern with periods of variable activity. On average, the ground surface dropped more than 8 m in depleted zones and rose nearly 4 m in the accumulation zones, with a velocity catalogued as very slow (about 15–30 cm/year) over a time span corresponding to a degree VIII of diachroneity. The total volume of the mobilized mass of this large contemporary slide was about 300 × 103 m3.This research was funded by the projects P06-RNM-02125 and RNM-06862 (ISTEGEO) funded by the Andalusian Research Plan, projects CGL2008-04854 and TIN2009-09939 funded by the Ministry of Science and Innovation of Spain and Research Groups TEP-213, and RNM 221 of the Andalusian Research Plan
Use of video games in Physical Education and self-concept development in adolescence: sex-based differences
Adolescence is the period of growth where major changes occur in all the dimensions that make up the human being. Also, the great current use of new technologies should be considered, specifically for this age group, the video games. The main aim of this study was to explore the relationship between the use of a video game in the field of Physical Education and the development of self-concept in adolescents, taking into account differences by sex. In addition, the effect of the video game used in the practice of the individual technique in basketball was analyzed. The analyses revealed that there was no improvement in self-concept in either the experimental or the control group, but that there were differences between sexes. Girls showed a greater improvement in physical and emotional self-concept than boys. In the case of basketball, there were improvements in individual basketball technique in both groups as well as by sex. In this way, it can be concluded that the use of video games in adolescence can positively influence the improvement of the individual basketball technique and the self-concept of girls.La adolescencia es el periodo de crecimiento donde se producen mayores cambios en todas las dimensiones que componen al ser humano. A este hecho hay que sumarle el gran uso actual de las nuevas tecnologías, concretamente para este grupo de edad, los videojuegos. El objetivo principal de este estudio fue explorar la relación entre el uso de un videojuego en el ámbito de Educación Física y el desarrollo del autoconcepto en adolescentes atendiendo a las diferencias por sexos. Además, se analizó el efecto del videojuego utilizado en la práctica de la técnica individual en baloncesto. Los análisis revelaron que no hay mejoras en el autoconcepto ni en el grupo experimental ni en el grupo control, pero que sí hubo diferencias entre sexos. Tras la intervención se observó una mejora en el autoconcepto físico y emocional mayor en las chicas que en los chicos. En el caso del baloncesto, sí se produjeron mejoras en la técnica individual del baloncesto en ambos grupos como por sexo. De este modo, se puede concluir que el uso de videojuegos en la adolescencia puede influir positivamente en la mejora de la técnica individual del baloncesto y en el autoconcepto de las chicas
Integration of photogrammetric and terrestrial laser scanning techniques for heritage documentation
[EN] This paper presents the preliminary works of the Integration of Photogrammetric and Terrestrial Laser Scanner Techniques for Heritage Documentation Research Project (IFOTEL TIN2009-09939; Ministry of Science and Innovation, National Programme R+D+I, 2008-2011). The IFOTEL project aims with the improvement and optimization of heritage documentation by means of combination and integration of different methods and techniques, mainly close range photogrammetry (both terrestrial and aerial with light platforms), terrestrial laser scanner and surveying, joining the advantages of the different methods but also minimizing the disadvantages of each single technique.[ES] Este trabajo presenta las ideas y trabajos preliminares del proyecto Integración de Técnicas de Fotogrametría y Escáner Láser Terrestre para la Documentación Patrimonial (IFOTEL TIN2009-09939; Ministerio de Ciencia e Innovación, Plan Nacional I+D+i, 2008-2011), con el que se pretende buscar la mejora y optimización de la documentación del patrimonio cultural mediante la combinación de diferentes métodos, especialmente de fotogrametría (tanto terrestre como aérea mediante el uso de plataformas ligeras), técnicas de barrido láser (LÍDAR terrestre) y topografía, que aúnen las ventajas de todos ellos minimizando sus inconvenientes.The present study has been financed by grant TIN2009-09939 (IFOTEL Project) from the Ministry of Science and Innovation, National
Programme R+D+I, 2008-2011, European Regional Development Funds (FEDER) and TEP-213 Research Group (PAI, Junta de
Andalucía).Cardenal Escarcena, FJ.; Mata De Castro, E.; Pérez García, JL.; Mozas Calvache, AT.; Fernández Del Castillo, T.; Delgado García, J.; Ureña Cámara, M.... (2011). Integration of photogrammetric and terrestrial laser scanning techniques for heritage documentation. Virtual Archaeology Review. 2(3):53-57. https://doi.org/10.4995/var.2011.4605535723CIPA (2010). CIPA_Heritage Documentation: Objectives and Activities. In: http://cipa.icomos.org/index.php?id=40 (last accessed April 2010).EVARAERTS, J. (2008). Unmanned aerial vehicles for photogrammetry and remote sensing. In:Advances in Photogrammtery, Remote Sensing and Spatial Information sciences:2008 ISPRS Congress Book. Eds. Li, Chen y Baltsavias. Chapter 9, 117-126. CRC Press, Taylor and Francis Gr. London. http://dx.doi.org/10.1201/9780203888445.ch9HABIB, A. (2009). Integration of LIDAR and Photogrammetric Data: Triangulation and Orthorectification. In: Topographic Laser Ranging and Scanning. Principles and Processing. Eds.: Shan & Toth. Chap. 13, 371-402, CRC Press, Taylor and Francis Gr. London.MOZAS, A., PEREZ-GARCIA, J.L., BARBA, V., LOPEZ-ARENAS, A. (this congress). Estudio geométrico de piezas arqueológicas a partir de un modelo virtual 3D. II International Meeting on Graphic Archaeology and Informatics, Cultural Heritage and Innovation. Arqueologica 2.0. Sevilla, June 16-19 2010.PATIAS, P. GRUSSENMEYER, P., HANKE, K. (2008). Applications in Cultural Heritage Documentation. In:Advances in Photogrammtery, Remote Sensing and Spatial Information sciences:2008 ISPRS Congress Book. Eds. Li, Chen y Baltsavias. Chapter. 27, 363-383. CRC Press, Taylor and Francis Gr. London.PEREZ-GARCIA, J.L., MOZAS, A., CARDENAL, J. (this congress). Fotogrametría de bajo coste para la modelización de edificios históricos. II International Meeting on Graphic Archaeology and Informatics, Cultural Heritage and Innovation. Arqueologica 2.0. Sevilla, Jun
Recommended from our members
Pancreatic Duct Glands Are Distinct Ductal Compartments That React to Chronic Injury and Mediate Shh-Induced Metaplasia
BACKGROUND & AIMS: Pancreatic intraepithelial neoplasia (PanIN) are pancreatic cancer precursor lesions of unclear origin and significance. PanIN aberrantly express sonic hedgehog (Shh), an initiator of pancreatic cancer, and gastrointestinal mucins. A majority of PanIN are thought to arise from ducts. We identified a novel ductal compartment that is gathered in gland-like outpouches (pancreatic duct glands [PDG]) of major ducts and characterized its role in injury and metaplasia. METHODS: The ductal system was analyzed in normal pancreata and chronic pancreatitis in humans and mice. Anatomy was assessed by serial hematoxylin and eosin sections and scanning electron microscopy of corrosion casts. Expression of mucins and developmental genes and proliferation were assessed by immunohistochemistry or real-time quantitative polymerase chain reaction. Effects of Shh on ductal cells were investigated by exposure to Shh in vitro and transgenic misexpression in vivo. RESULTS: Three-dimensional analysis revealed blind-ending outpouches of ducts in murine and human pancreata. These PDG are morphologically and molecularly distinct from normal ducts; even in normal pancreata they display PanIN and metaplastic features, such as expression of Shh and gastric mucins. They express other developmental genes, such as Pdx-1 and Hes-1. In injury, Shh is up-regulated along with gastric mucins. Expansion of the PDG compartment results in a mucinous metaplasia. Shh promotes this transformation in vitro and in vivo. CONCLUSIONS: PDG are distinct gland-like mucinous compartments with a distinct molecular signature. In response to injury, PDG undergo an Shh-mediated mucinous gastrointestinal metaplasia with PanIN-like features. PDG may provide a link between Shh, mucinous metaplasia, and neoplasia
Una guía clara, aplicable, recomendable y que se cumple.
Objectives. To assess the use of the guide "Atención a las personas cuidadoras" ("Care for caregivers") by nurses who had performed group interventions with caregivers and to obtain their opinion on:- The suitability and structure of the didactic units- The need to modify the rest of the contents: Department organization, registration, initial survey, quality of life questionnaire, workshop review questionnaire- Topics which are not dealt with but which should be includedMethods. Transversal descriptive study. A survey of primary care nurses in Asturias who had conducted group workshops with family caregivers between January 2009 and June 2010 was carried out.Results. The response percentage to the survey was 81%. The guide was used to prepare interventions by 95% of the professionals. 96% of the survey group declared that the contents of the guide address the needs of the caregivers. Most nurses, 92%, also consider the guide to be easy to understand and to use. 77% of them identified a lack of training as a difficulty when trying to teach the contents of the guide. Finally, 91% of the survey group would recommend using this guide when developing a group intervention with caregivers.Conclusions. Nurse adherence to this guide, which helps direct the psychoeducational group intervention for caregivers of dependent persons, was remarkably high. The Healthcare Administration should implement useful strategies in order to overcome the identified barriers which hamper a better use and application of the guide. Its contents must be reviewed and updated so that the guide may become a helpful tool capable of improving the quality of care in this Department.Objetivos Conocer la utilización de la guía “Atención a las personas cuidadoras” por las enfermeras que han realizado intervenciones grupales con cuidadoras y averiguar su opinión sobre:- la idoneidad y estructura de las unidades didácticas- la necesidad de modificación del resto de contenidos: organización del Servicio, registro, encuesta inicial, cuestionario de calidad de vida, de evaluación del taller.- los temas no tratados que sería recomendable introducir. Metodología. Estudio descriptivo transversal mediante una encuesta aplicada a las enfermeras de Atención Primaria de Asturias que realizaron Talleres grupales con cuidadores familiares durante el periodo enero 2009- junio 2010. Resultados. El porcentaje de respuesta al cuestionario fue del 81%. La guía fue empleada para la preparación de la intervención por el 95% de las profesionales. El 96% de las encuestadas manifiestan que los contenidos de la guía responden a las necesidades de los cuidadores. Mayoritaria es también la respuesta de quienes la consideran comprensible y fácil de manejar, el 92%. Destacaron la falta de formación como dificultad para impartir los contenidos de la guía el 77%. El 91% de las encuestadas recomendaría esta guía para el desarrollo de una intervención grupal con personas cuidadoras. Conclusiones. Es bastante elevada la adherencia de las enfermeras a esta guía que orienta la intervención psicoeducativa grupal con cuidadores de personas dependientes. Se requieren llevar a cabo estrategias útiles por parte de la Administración Sanitaria con el fin de resolver las barreras identificadas que dificultan su mejor uso y aplicación, entre ellas, mejorar la formación de las enfermeras en habilidades de comunicación y de inteligencia emocional. Es necesario realizar una revisión y actualización de los contenidos de la guía para que sea una herramienta que ayude y mejore la calidad de la práctica de este Servicio
- …