AC line connector with intermediate DC link

An electric power transmission system and method that provides a power electronic interface system for connecting a plurality of alternating current transmission lines by one or more direct current transmission lines. The system includes dc-link converters, frequency transformers connected to the converters, and multilevel converters are connected to a direct current transmission line

Reducing the sugar and pH of the grape (vitis vinifera l. Cvs. 'Grenache' and 'tempranillo') through a single shoot trimming

Many vineyards all over the world can easily produce high potential alcohol levels, but the importance of the sugar content in berries has been changing over the past few years. The objective of this work was to reduce the sugar and pH of the grapes, delay berry ripening by decreasing the ratio between the leaf area and yield, perform an intense trimming treatment after berry set and establish the consequences for grapevine productivity in the following year. Severe shoot trimming was done over a three-year period (2010 to 2012). Phenological, vegetative and productive parameters were examined. The date of véraison was delayed by about 20 days. On the same harvesting date, the trim treatment had lower soluble solids (12% to 15 % reduction), lower pH (0.1 to 0.3) and a lower total anthocyanin content (10% reduction). The trim effect was also reflected in berry weight; as a consequence, bunch size and yield were also reduced by around 10%. If the trim treatment does not reduce the leaf area to fruit ratio below 0.50 m 2/kg, there is no negative impact on vine capacity in the next year.Peer Reviewe

Leaf area reduction by trimming, a growing technique to restore the anthocyanins: Sugars ratio decoupled by the warming climate

The aim of this work is the evaluation of the leaf area reduction by trimming, as a growing technique to restore the anthocyanins: sugars ratio decoupled by the warming climate. A 3-year period (2010-2012) severe shoot trimming treatment was done after berryset (berry diameter 3-4 mm) and the veraison date was delayed around 20 days. The grapes were picked at the same level of soluble solids in all the treatments. However, for every year, the trim treatment significatively increased the total anthocyanin content between 8 % and 21 % compared to control. Therefore, delaying the berry ripening process trough the decrease of the leaf area to fruit ratio, could partially restore the anthocyanins: sugars ratio disrupted by elevated temperatures. Although it is necessary to study other trimmings intensities as well as other times of intervention, the shoot trimming treatment could be a very simple technique to delay berry ripening and compensate the effects of climate warming.Peer Reviewe

A Review of Current Research Trends in Power-Electronic Innovations in Cyber-Physical Systems.

In this paper, a broad overview of the current research trends in power-electronic innovations in cyber-physical systems (CPSs) is presented. The recent advances in semiconductor device technologies, control architectures, and communication methodologies have enabled researchers to develop integrated smart CPSs that can cater to the emerging requirements of smart grids, renewable energy, electric vehicles, trains, ships, internet of things (IoTs), etc. The topics presented in this paper include novel power-distribution architectures, protection techniques considering large renewable integration in smart grids, wireless charging in electric vehicles, simultaneous power and information transmission, multi-hop network-based coordination, power technologies for renewable energy and smart transformer, CPS reliability, transactive smart railway grid, and real-time simulation of shipboard power systems. It is anticipated that the research trends presented in this paper will provide a timely and useful overview to the power-electronics researchers with broad applications in CPSs.post-print2.019 K

Diagnostic classification of Parkinson’s disease based on non-motor manifestations and machine learning strategies

Non-motor manifestations of Parkinson’s disease (PD) appear early and have a significant impact on the quality of life of patients, but few studies have evaluated their predictive potential with machine learning algorithms. We evaluated 9 algorithms for discriminating PD patients from controls using a wide collection of non-motor clinical PD features from two databases: Biocruces (96 subjects) and PPMI (687 subjects). In addition, we evaluated whether the combination of both databases could improve the individual results. For each database 2 versions with different granularity were created and a feature selection process was performed. We observed that most of the algorithms were able to detect PD patients with high accuracy (>80%). Support Vector Machine and Multi-Layer Perceptron obtained the best performance, with an accuracy of 86.3% and 84.7%, respectively. Likewise, feature selection led to a significant reduction in the number of variables and to better performance. Besides, the enrichment of Biocruces database with data from PPMI moderately benefited the performance of the classification algorithms, especially the recall and to a lesser extent the accuracy, while the precision worsened slightly. The use of interpretable rules obtained by the RIPPER algorithm showed that simply using two variables (autonomic manifestations and olfactory dysfunction), it was possible to achieve an accuracy of 84.4%. Our study demonstrates that the analysis of non-motor parameters of PD through machine learning techniques can detect PD patients with high accuracy and recall, and allows us to select the most discriminative non-motor variables to create potential tools for PD screening.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work was partially funded by the Department of Education, Universities and Research of the Basque Government (ADIAN, IT-980-16); by the Spanish Ministry of Science, Innovation and Universities - National Research Agency and the European Regional Development Fund - ERDF (PhysComp, TIN2017-85409-P), and from the State Research Agency (AEI, Spain) under grant agreement No RED2018-102312-T (IA-Biomed); by Michael J. Fox Foundation [RRIA 2014 (Rapid Response Innovation Awards) Program (Grant ID: 10189)]; by the Instituto de Salud Carlos III through the project “PI14/00679” and “PI16/00005”, the Juan Rodes grant “JR15/00008” (IG) (Co-funded by European Regional Development Fund/European Social Fund - “Investing in your future”); and by the Department of Health of the Basque Government through the projects “2016111009” and “2019111100”

A Multi-Institutional Approach to Delivering Shared Curricula for Developing a Next-Generation Energy Workforce

In this paper, we consider collaborative power systems education through the FEEDER consortium. To increase students\u27 access to power engineering educational content, the consortium of seven universities was formed. A framework is presented to characterize different collaborative education activities among the universities. Three of these approaches of collaborative educational activities are presented and discussed. These include 1) cross-institutional blended courses (“MS-MD”); 2) cross-institutional distance courses (“SS-MD”); and 3) single-site special experiential courses and concentrated on-site programs available to students across consortium institutions (“MS-SD”). This paper presents the advantages and disadvantages of each approach

Los partidos politicos en america latina y su efecto sobre las economias de la region

El presente trabajo está basado en el análisis del comportamiento de los principales partidos políticos existentes de América Latina y sus dimensiones ideológicas o tendencias. Para ello se han utilizado herramientas de análisis multivariante como el análisis de componentes principales, correspondencia simple y conglomerados o clúster. Se decidió realizar este trabajo para determinar la relación existente entre las caracteristicas de los partidos políticos de cada uno de los paises de la región y los resultados económicos obtenidos, en términos de las principales variables macroeconómicas

Synthesis of Sinusoidal Waveform References Synchronized With Periodic Signals

This paper proposes a novel method to generate a sinusoidal waveform synchronized with any measurable periodic signal whose frequency is within a given neighborhood. The synthesized sinusoidal signal could be used as a reference current for certain applications of parallel active power filters or any other where such synchronization would be necessary (e.g., ac/dc converters for renewable energy resources, power factor correctors, power supplies, UPS, etc.) The method is based on the behavior of a dynamical system and avoids employing the usual combination of phase-locked loop (PLL) and lookup table found in most parallel active filters synthesizing a sinusoidal source current (a table also means using significant storage memory). The novel method produces two high-quality sinusoidal waveforms that are in quadrature and is applicable to those parallel active filters whose control methodology is in the reference frame, or alternatively, it produces three sinusoidal waveforms shifted 120 degrees for designs that work in the frame. Here, a th order implementation is described, including a proof of convergence. For its most simple implementation , simulated and experimental results are included.Fil: Busada, Claudio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages". Universidad Nacional del Sur. Departamento de Ingeniería Eléctrica y de Computadoras. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages"; ArgentinaFil: Chiacchiarini, Hector Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages". Universidad Nacional del Sur. Departamento de Ingeniería Eléctrica y de Computadoras. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages"; ArgentinaFil: Balda, Juan Carlos. University of Arkansas; Estados Unido

Agricultural and enological characterization of four minority grape varieties known as Tempranillo in Rioja appellation (Spain)

Monográfico 25. Investigación e innovación al servicio de la alimentación en La Rioja: avances en el campo de la Enología y en otros porductos riojanos.[ES] La erosión genética producida durante los últimos años en la viticultura española ha creado la necesidad de establecer bancos de germoplasma con el fin de preservar aquellas variedades minoritarias y locales en peligro de extinción en numerosas regiones vitivinícolas. El objetivo del presente trabajo se centra en conocer el comportamiento agronómico y enológico de cuatro variedades minoritarias conocidas como Tempranillo en la D.O.Ca. Rioja: Tempranillo Blanco, Tempranillo Royo, Tempranillo Temprano (Portugais Blau) y Tempranillo del Barón (Trepat). Del estudio se concluye que el Tempranillo Blanco y Royo son aptas para la producción de vinos blancos de calidad. Trepat es más recomendable para vinos jóvenes, mientras que Portugais Blau puede utilizarse para la elaboración de vinos tintos de calidad. Mediante la caracterización y estudio de estas variedades minoritarias de Rioja se recupera una parte importante de la historia vitivinícola de la región y se contribuye a mantener la identidad propia de la D.O.Ca. Rioja.[EN] Genetic erosion in the Spanish wine regions has increased recently. Because of this, it is necessary to preserve all these minority and local varieties which are in danger of extinction within germplasm banks. The objec- tive of this work consists in the characterization of the main grape growing and enological characteristics of four minority grape varieties known as Tempranillo in Rioja: Tempranillo Blanco, Tempranillo Royo, Tempranillo Temprano (Portugais Blau) and Tempranillo del Barón (Trepat). It has been concluded that both Tempranillo Blanco and Tempranillo Royo are adequate for quality white wines, while Trepat is only adequate for young reds. Nevertheless Portugais Blau could be used in quality aged wines. The characterization and study of the minority Rioja grape varieties recovers an important piece of the appellation history and preserves the identity Rioja appellation.Peer Reviewe

Ampelographic and genetic characterization and identification of different grape varieties known as “Maturana” in Rioja appellation (Spain)

Monográfico 25. Investigación e innovación al servicio de la alimentación en La Rioja: avances en el campo de la Enología y en otros porductos riojanos.[ES] El objetivo de este trabajo es la identificación de diferentes variedades minoritarias conocidas con el nombre de “Maturana” en la DOCa. Rioja. La caracterización e identificación de las variedades se ha hecho mediante descripciones ampelográficas y marcadores moleculares. Se demuestra la existencia de tres variedades diferentes con el nombre de ‘Maturana’: ‘Maturana Blanca’, ‘Maturana Tinta’ y ‘Maturana Tinta Navarreteña’. Se establece una nueva sinonimia: ‘Maturana Tinta Navarreteña’ se corresponde con la veriedad francesa ‘Castets’. Se confirma la homonimia entre ‘Maturana Tinta Navarreteña’ y ‘Maturana Tinta’, que son variedades diferentes. La caracterización, identificación y estudio de estas variedades minoritarias contribuye a preservar la identidad y profundizar en la diferenciación de una región vitivinícola como la DOCa. Rioja.[EN] The objective of this work consists in the identification of the preserved minority varieties known as “Maturana” in Rioja appellation. The microsatellite markers and the ampelographic description have been used for variety identification. The existence of three different varieties with the name of ‘Maturana’ has been proved: ‘Maturana Blanca’, ‘Maturana Tinta’ and ‘Maturana Tinta Navarreteña’. One homonym has been clarified: ‘Maturana Tinta Navarreteña’ is different from ‘Maturana Tinta’ and one new synonym has been established: ‘Maturana Tinta Navarreteña’ as ‘Castets’. The characterization of these minority varieties allows to preserve the identity and to increase the differentiation of a wine-growing region as Rioja.Peer Reviewe