A column-store meets the point clouds

Dealing with LIDAR data in the context of database management systems calls for a re-assessment of their functionality, performance, and storage/processing limitations. The territory for efficient and scalable processing of LIDAR repositories using GIS enabled database systems is still largely unexplored. Bringing together hard core database management experts and GIS application developers is a sine qua non to advance the state of the art. In particular to assess the relative merits of both traditional row-based database engines and the modern column-oriented database engines

From pre-ceramic polymer to high-toughness ceramic: An SLA 3D printing approach

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Enzymatic preparation of structured triacylglycerides containing γ-linolenic acid

with the addition of molecular sieves (MS) at different addition times (3, 9, 12 and 15 h) and loads (2.5, 5, 10 and 15%, based on the total weight of substrates), the enrichment of GLA from evening primrose oil (EPO) and 1- butanol (BtOH) was improved via Candida rugosa lipase-catalysed esterification reactions. Secondly, the GLAenriched fraction was separated by thin-layer chromatography (TLC) to be further set to react during the third step in the presence of glycerol and Candida antarctica fraction B (CALB), under different enzyme loadings (5, 10, 15 and 20%, based on the total weight of substrates), temperatures (30, 40, 50 and 60 ◦C) and substrates molar ratios (1:1, 2:1, 3:1 and 4:1, GLA:glycerol). 60% of STAG containing 49 wt% of GLA were produced by using 15% of CALB at 60 ◦C and a 3:1 molar ratio.Conacyt: Beca no. 328716 UAEMex: Proyecto 3866/2015/PI

Modelización espacial de trips (insecta: thysanoptera) en el cultivo de aguacate (persea americana)

SE LOGRÓ ESTABLECER MEDIANTE MODELIZACIÓN ESPACIAL LA DISTRIBUCIÓN DE LAS POBLACIONES DE TRIPS EN AGUACATE EN EL ESTADO DE MÉXICO.México es el principal productor y exportador de aguacate en el mundo. Los trips son considerados una de las principales plagas de este cultivo, ya que se alimentan del fruto pequeño y forman crestas o protuberancias, las cuales al crecer el fruto son más visibles, y este pierde valor económico. Además de este daño, las heridas causadas por los trips son el principal causante para que entre la enfermedad denominada roña de fruto. Las alternativas de control de los trips han carecido de eficacia debido, entre otras causas, a que se desconoce su distribución espacial dentro de las huertas de aguacate. Este trabajo tuvo por objetivo determinar la distribución espacial de las poblaciones de trips en aguacate mediante el uso de técnicas de estadística espacial que condujeron a la generación de mapas por medio del “krigeado”. Los resultados demostraron que las poblaciones de trips presentan una distribución de tipo agregada, que fue corroborada por los mapas de densidad. Las infestaciones se distribuyeron en el 100 % de la superficie de las dos parcelas experimentales, lo cual resulta interesante para dirigir las medidas de control sobre áreas específicas de infestación. Se logró determinar estabilidad espacial y temporal a corto plazo de las poblaciones de trips

VOEvent Standard for Fast Radio Bursts

Fast radio bursts are a new class of transient radio phenomena currently detected as millisecond radio pulses with very high dispersion measures. As new radio surveys begin searching for FRBs a large population is expected to be detected in real-time, triggering a range of multi-wavelength and multi-messenger telescopes to search for repeating bursts and/or associated emission. Here we propose a method for disseminating FRB triggers using Virtual Observatory Events (VOEvents). This format was developed and is used successfully for transient alerts across the electromagnetic spectrum and for multi-messenger signals such as gravitational waves. In this paper we outline a proposed VOEvent standard for FRBs that includes the essential parameters of the event and where these parameters should be specified within the structure of the event. An additional advantage to the use of VOEvents for FRBs is that the events can automatically be ingested into the FRB Catalogue (FRBCAT) enabling real-time updates for public use. We welcome feedback from the community on the proposed standard outlined below and encourage those interested to join the nascent working group forming around this topic.Comment: 11 pages, 2 figures, parameter definition table in appendi

Benchmarking and improving point cloud data management in MonetDB

The popularity, availability and sizes of point cloud data sets are increasing, thus raising interesting data management and processing challenges. Various software solutions are available for the management of point cloud data. A benchmark for point cloud data management systems was defined and it was executed for several solutions. In this paper we focus on the solutions based on the column-store MonetDB, the generic out-of-the-box approach is compared with two alternative approaches that exploit the spatial coherence of the data to improve the data access and to minimize the storage requirement

Diseño del área de recursos humanos en el Hotel Unu de la ciudad de Huancayo

El rubro hotelero al formar parte del régimen de las mypes, es una industria grande y dinámica a nivel nacional generadora de empleo. Sin embargo, las empresas que pertenecen a este régimen, en su mayoría no cuentan con procesos estructurados como: la gestión de sus recursos humanos, con procesos para la contratación de personal, capacitación, o con un plan organizacional definido que refleje la misión, visión y valores de la empresa. Es por este motivo que el presente trabajo tiene un enfoque de investigación aplicada que observa el problema de la ausencia del área de recursos humanos para una adecuada gestión del capital humano, y que tangencialmente impacta en la calidad de atención y satisfacción del cliente en el Hotel Unu; por este motivo se plantea como objetivo del trabajo, la implementación del área de recursos humanos, el cual involucra el desarrollo de tres productos: proceso de selección, proceso de desempeño, y proceso desarrollo, todos bajo el modelo de la dirección del área de recursos por competencias

Electrochemical Mineralization of Ibuprofen on BDD Electrodes in an Electrochemical Flow Reactor: Numerical Optimization Approach

Statistical analysis was applied to optimize the electrochemical mineralization of ibuprofen with two boron-doped diamond (BDD) electrodes in a continuous electrochemical flow reactor under recirculation batch mode. A central composite rotatable (CCR) experimental design was used to analyze the e ect of initial pH (2.95–13.04), current intensity (2.66–4.34 A), and volumetric flow rate (0.16–1.84 L/min) and further optimized by response surface methodology (RSM) to obtain the maximum mineralization e ciency and the minimum specific energy consumption. A 91.6% mineralization e ciency (EM) of ibuprofen with a specific energy consumption (EC) of 4.36 KW h/g TOC within 7 h of treatment was achieved using the optimized operating parameters (pH0 = 12.29, I = 3.26 A, and Q of 1 L/min). Experimental results of RSM were fitted via a third-degree polynomial regression equation having the performance index determination coe cients (R2) of 0.8658 and 0.8468 for the EM and EC, respectively. The reduced root-mean-square error (RMSE) was 0.1038 and 0.1918 for EM and EC, respectively. This indicates an e cient predictive performance to optimize the operating parameters of the electrochemical flow reactor with desirability of 0.9999993. Besides, it was concluded that the optimized conditions allow to achieve a high percentage of ibuprofen mineralization (91.6%) and a cost of 0.002 USD $/L. Therefore, the assessed process is e cient for wastewater remediation.CONACyT (791495 y 740588

What do we evaluate in sport mindfulness interventions? A systematic review of commonly used questionnaires

Interest of the study: mindfulness is a concept describing the focus on the present moment, intentionally and without judgement. This approach has only recently been applied to sport psychology. Objectives: the aim of the current review is to investigate which indicators and questionnaires are used in mindfulness research in sport, being specifically interested in mindfulness assessment. Methods: PRISMA guidelines for systematic reviews and the recommendations of the Cochrane Collaboration were used. Literature searches were conducted in Psychinfo, PubMed, EMBASE and the Cochrane Library. Results: From 2, 203 records initially retrieved, 17 articles were included. The results show that mindfulness, anxiety and acceptance are the most commonly studied psychological indicators. The Five Facet Mindfulness Questionnaire is the most frequently used mindfulness scale. We also discuss the possibility of using physiological indicators as complementary assessment. Conclusions: It is recommended to specifically adapt some questionnaires, such is already done with the Sport Anxiety Scale or the Mindfulness Inventory for Sport, for their use in sport psychology