9300 research outputs found
Sort by
Estimation of Leaf Area Index in vineyards by analysing projected shadows using UAV imagery
No full textA few decades ago, farmers could precisely monitor their croplands just by walking over the fields, but this task becomes more difficult as farm size increases. Precision viticulture can help better understand the vineyard and measure some key structural parameters, such as the Leaf Area Index (LAI). Remote Sensing is a typical approach to monitoring vegetation which measures the spectral information directly emitted and reflected from vegetation. This study explores a new method for estimating LAI which measures the projected shadows of plants using UAV (unmanned aerial vehicle) imagery. A flight mission over a vineyard was scheduled in the afternoon (15:30 to 16:00 solar time), which is the optimal time for the projection of vine shadows on the ground. Real LAI was measured destructively by removing all the vegetation from the area. Then, the projected shadows in the image were detected using machine learning methods (k-means and random forest) and analysed at pixel level using a customised R code. A strong linear relationship (R² = 0.76, RMSE = 0.160 m² m-2 and MAE = 0.139 m² m-2) was found between the shaded area and the LAI per vine. This is a quick and simple method, which is non-destructive and gives accurate results; moreover, flights can be scheduled during other periods of the day than solar noon, such as in the morning or afternoon, thus enabling pilots to extend their working day. Therefore, it may be a viable option for determining LAI in vineyards trained on Vertical Shoot Positioned (VSP) systems.This study was possible thanks to the financial support of Junta de Castilla y León (Spain), the project INIA RTA2014- 00077-C02, FPI-INIA2016-017 and FEDER funding
Improving Analog Reasoning in the Elderly
No full textAnalogical reasoning is perhaps the core element of
intelligent behavior and it has been related to successful aging. The present study aimed to impact
the analogical reasoning of the elderly individuals through the application of an analogies protocol
based on promoting fluency and flexibility (FFA) in relational responding. The FFA protocol was
designed specifically for this study and according to the available information on relational behavior.
A pre-post design with two conditions, five participants each ranged of 69 to 89 years old. At pretest, participants responded to two WAIS subscales as well as to three analogies tasks specifically
designed for the study. Then, fluency and flexibility analogies protocol (FFA) was applied to the
participants of the experimental condition throughout a week. Subsequently, in post-test, the same
measures used in the pre-test were applied. The FFA protocol had a significant impact on three of
the five measures. The sensitivity of the tests was discussed as well as different ways to improve
the protocol impact were all discussed. The relevant effect produced for most of the participants are
discussed and highlighted
Effectiveness of web-based feedback interventions for people with overweight and obesity: systematic review and network meta-analysis of randomized controlled trials
No full textArtículo de revisiónBackground: Web-based delivered interventions have become an innovative option to treat health problems, like obesity. The aim of this systematic review and network meta-analysis was to analyze the effectiveness of web-based behavioral treatments for adults with overweight and obesity. Web- based interventions and comparison interventions (traditional weight control programs) were classified according to the following feedback characteristics: frequency, personalization, and provider (human versus machine). Method: From the initial 1789 studies, 15 were included in this review. A network meta- analysis was conducted to analyze the efficacy of web-based programs with traditional interventions, considering direct and indirect comparisons. The main outcome was the weight loss mean difference (kg) between baseline and post- treatment. Heterogeneity and consistency assumptions were validated to conduct the network meta-analysis. Results: Network meta-analysis showed comparisons between different treatment options. The main results were that Intensive Contact Web-based programs were more effective than wait-list (Mean Difference − 1.86 kg; 95% Confidence Interval: − 3.61, − 0.12). Moreover, Intensive Contact Web-based programs were more effective than the other web- based options and self-help traditional interventions. However, the only significant comparison was Intensive Contact Web-based programs versus Guided Self-Help Web-based programs (Mean Difference − 4.31 kg; 95% Confidence Interval: − 5,22, − 3,41). Intensive Contact Web-based programs were the most effective treatment option according the obtained results, achieving the first place in the ranking provided by the network meta-analysis with 98.5% of probabilities
Design of a Virtual Reality Software to Promote the Learning of Students with Dyslexia
No full textThe research conducted is part of the European project Erasmus+ FORDYSVAR, whose main objective is to contribute to the educational inclusion of students with dyslexia, aged between 10 and 16 years old, through the use of technology, specifically virtual reality (VR), to improve the access, participation, and educational achievement of students with this learning difficulty. This is a qualitative and interpretative study with a descriptive character. The objective of this work is to design a VR application that contributes to the learning of students with dyslexia based on user-centered design as a methodology. The developmental lines to be addressed in the application have been defined, the features to be included have been determined, and the activities that make up the software have been designed. All this is based on the analysis of the needs and interests of the end users (students with dyslexia) as well as the vision of professionals (teachers and dyslexia intervention specialists). The results obtained allow us to conclude that VR technology is an interesting avenue of treatment, as it offers a ludic, safe, controlled, and motivating environment for students with dyslexia.This work has been co-financed by the Erasmus+ program of the European Union through the 2018-1-ES01-KA201-050659 project. That of the European Commission for the preparation of this publication does not imply acceptance of its contents, which is the sole responsibility of the authors. Therefore, the Commission is not responsible for the use that may be made of the information disclosed here
'Youtuberism' as a response in times of lock down. A teaching experience of the subject of Criminal Procedural Law
No full textLa pandemia ocasionada por la Covid 19 ha supuesto una reinvención de la docencia, debiendo adaptarse precipitadamente y sin planificación previa a la metodología telemática. La presente experiencia se basó en la aplicación de una docencia con tintes ‘youtuberescos’. Con la intención de formalizar una docencia más sugestiva se adaptaron los clásicos videos didácticos conforme a las actuaciones realizadas por aquellos youtubers de mayor fama en la difusión de contenido, generando un conjunto de ideas que conjugaban el aspecto didáctico con el de ocio, de gran aceptación entre el alumnado ante el aprendizaje por medios no tediosos. Como conclusiones se destaca una docencia más sugestiva a través de un clima de estudio más relajado que ha contado con una alta valoración y seguimiento por parte de los discentes encuestados.The Pandemic caused by Covid19 has meant a reinvention of teaching, having to adapt hastily and without prior planning to the telematic methodology. The present experience was based on the application of a teaching with ‘youtubers’ dyes. With the intention of formalizing a more suggestive teaching, the classic didactic videos were adapted according to the actions carried out by those youtubersof greater fame in the dissemination of content, generating a set of ideas that combined the didactic aspect with the leisure one, of great acceptance among the students before learning by non-tedious means. As conclusions, a more suggestive teaching stands out through a more relaxed study climate that has contacted a high assessment and follow-up by the students surveyed
A la sombra de las catedrales: cultura, poder y guerra en la Edad Moderna
No full textActas de la XVI reunión científica de la Fundación Española de Historia Moderna "A la sombra de las catedrales", 8, 9 y 10 de junio de 2021, organizada por la Universidad de Burgos.Desde hace unos años, la ciudad de Burgos prepara el VIII Centenario de la colocación de la primera piedra de la Seo burgalesa que culminará en 2021. La presente obra surgió teniendo en cuenta este hito histórico y cultural, por ello incluye un importante volumen de trabajos de investigación que reflejan el gran número de perspectivas desde las que se puede estudiar la Historia Moderna "a la sombra de las catedrales". Para una mejor articulación de la obra, esta se ha dividido en dos secciones. La primera de estas lleva por título "A la sombra de las catedrales: religión, cultura y sociedad" e incluye estudios relacionados con las diversas facetas de la vida de las ciudades catedralicias: religiosidad, de actividad cultural, económica, asistencial, desarrollo de las corporaciones gremiales y las cofradías, etc. La segunda sección "De la Monarquía hispánica de los Austrias a la Monarquía española de los Borbones: riqueza, poder y guerra" contiene estudios relacionados con los debates historiográficos más actuales y, al mismo tiempo un análisis de cuáles fueron los factores necesarios para alcanzar esa posición: los recursos, los medios, los instrumentos para el gobierno de tan vastos dominios (humanos, materiales, religiosos, etc.). La reflexión se extenderá también a todos los cambios que se produjeron en el siglo XVIII tras la llegada de la dinastía Borbón
Blockchain applications in food marketing
Get PDFEste Trabajo de Fin de Grado analiza los fundamentos de la tecnología blockchain para obtener un
conocimiento básico sobre lo que significa, su origen y evolución, su funcionamiento y las ventajas que
ofrece sobre otras tecnologías digitales. Se presenta brevemente la utilidad de esta tecnología en los
distintos sectores, pero, sobre todo, se detallan las aplicaciones y ventajas del blockchain en el marketing
alimentario. Para una mejor comprensión, se analizan algunos casos de éxito y, por último, a fin de
determinar el grado de conocimiento y aplicación del blockchain en el sector agroalimentario de Castilla
y León se realiza un estudio empírico a través del análisis de los resultados de una encuesta contestada
por 48 empresas.This Bachelor Thesis analyzes the fundamentals of blockchain technology to obtain a basic knowledge
about what it means, its origin and evolution, its operation and the advantages it offers over other digital
technologies. The usefulness of this technology in the different sectors is briefly presented, but above all,
the applications and advantages of blockchain in food marketing are detailed. For a better
understanding, some success stories are analyzed and finally, in order to determine the degree of
knowledge and application of the blockchain in the agri-food sector of Castilla y León an empirical
study is carried out through the analysis of the results of a survey answered by 48 companies
Bioactive compounds extraction from olive leaves by subcritical water extraction
Get PDFPóster presentado en: 18th European Meeting on Supercritical Fluids. 2021, 4-6 de mayo, Burdeos (online)Olive leaves (OL) are one of the by-products generated during the pruning of olives tress and during separation process in olive processing. OL are lignocellulosic biomass with important amounts of extractives and lignin (Table 1). OL have a significant amount of phenolic compounds and other bioactive compounds such as mannitol. Mannitol is a sugar alcohol with reduced caloric value compared with other sugars with different applications in the food and pharmaceutical industries due to its functional properties. Mannitol production depends on the sorbitol market since is obtained as a by-product in the catalytic hydrogenation process of sorbitol production. Therefore, alternative process to obtain mannitol from natural sources avoiding the use of high temperatures would be advantageous to obtain this polyol.
In this work, valorization of OL was performed by subcritical water extraction in a batch pilot plant with 20 L capacity where 3 kg of the dry OL were put in contact with subcritical water at a medium temperature of 181.1 0.6 ºC. Figures 1 and 2 show the extraction curves of mannitol and some of the main polyphenols compounds identified by HPLC/DAD.
By SW treatment, mannitol extraction yield was nearly 100 % after 20 min of extraction (OL has 99 1 mg mannitol/ g dry OL). The main PC extracted by SW was oleuropein nearly 1.5 mg/g dry OL, but also verbascoside and luteolin-7-glucoside. TPC of SW extracts was 33 mg of gallic acid equivalent/g dry OL.JCyL and ERDF for financial support of projects BU301P18 and BU050P20 and to Agencia Estatal de Investigación for project funding PID2019-104950RB-I00/AEI/10.13039/501100011033. To the company Hiperbaric through project BIOLIGNO (10/16/BU/0017), funded by ERDF and JCyL through ICE. To JCyL and ESF for E. Trigueros and P. Alonso-Riaño predoctoral contracts and for the contracts of D. Benito-Bedoya and D.M. Aymara-Caiza trough the YEI program
