bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Method to Perform Direct Efficiency Measurement and Power Flow Analysis in Vibration Energy Harvesters
Authors: Kunz Jan , Fialka Jiri , Pikula Stanislav , Benes Petr , Krejci Jakub , Klusacek Stanislav , Havranek Zdenek
Published: March 2021

Measuring the efficiency of piezo energy harvesters (PEHs) according to the definition constitutes a challenging task. The power consumption is often established in a simplified manner, by ignoring the mechanical losses and focusing exclusively on the mechanical power of the PEH. Generally, the input power is calculated from the PEH’s parameters. To improve the procedure, we have designed a method exploiting a measurement system that can directly establish the definition-based efficiency for different vibration amplitudes, frequencies, and resistance loads. Importantly, the parameters of the PEH need not be known. The input power is determined from the vibration source; therefore, the method is suitable for comparing different types of PEHs. The novel system exhibits a combined absolute uncertainty of less than 0.5% and allows quantifying the losses. The approach was tested with two commercially available PEHs, namely, a lead zirconate titanate (PZT) MIDE PPA-1011 and a polyvinylidene fluoride (PVDF) TE LDTM-028K. To facilitate comparison with the proposed efficiency, we calculated and measured the quantity also by using one of the standard options (simplified efficiency). The standard concept yields higher values, especially in PVDFs. The difference arises from the device’s low stiffness, which produces high displacement that is proportional to the losses. Simultaneously, the insufficient stiffness markedly reduces the PEH’s mechanical power. This effect cannot be detected via the standard techniques. We identified the main sources of loss in the damping of the movement by the surrounding air and thermal losses. The latter source is caused by internal and interlayer friction.
Optimization of Ultra-Dense Wireless Powered Networks
Authors: Diamantoulakis Panagiotis D. , Papanikolaou Vasilis K. , Karagiannidis George K.
Published: March 2021

The internet-of-things (IoT) is expected to have a transformative impact in several different domains, including energy management in smart grids, manufacturing, transportation, smart cities and communities, smart food and farming, and healthcare. To this direction, the maintenance cost of IoT deployments has been identified as one of the main challenges, which is directly related to energy efficiency and autonomy of IoT solutions. In order to increase the energy sustainability of next-generation IoT, wireless power transfer (WPT) emerged as a promising technology; however, its effectiveness is hindered as the distance between the base station and the wireless powered IoT devices increases. To counter this effect, decentralized approaches based on the use of distributed densely deployed remote radio heads (RRHs) can be utilized to diminish the distance between the transmitting and the receiving nodes. A trade-off ensues from the use of RRHs as power beacons (PBs) or access points (APs) that enable either energy transfer during downlink or information reception during uplink, respectively. To balance this trade-off, in this work, the maximization of the ergodic rate in ultra-dense wireless powered networks is investigated. In more detail, three different protocols are introduced, optimized, and compared to each other: density splitting, time splitting, and hybrid time and density splitting, which are based on the optimization of the portion of the number of RRHs that are employed as PBs or APs at a specific time instance. Additionally, two different policies are taken into account regarding the PBs’ power constraint. The formulated problems that correspond to the combination of the proposed protocols with each of the two considered power constraint policies are optimally solved by using convex optimization tools and closed-form solutions are derived that result to useful insights. Finally, numerical results are provided, which illustrate the ergodic rate achieved by each of the proposed protocols and offer interesting conclusions regarding their comparison, which are directly linked to design guidelines and the required capital and operational expenses.
Adaptive Robust Trajectory Tracking Control of Multiple Quad-Rotor UAVs with Parametric Uncertainties and Disturbances
Authors: Mehmood Yasir , Aslam Jawad , Ullah Nasim , Chowdhury Md. Shahariar , Techato Kuaanan , Alzaed Ali Nasser
Published: March 2021

Recently, formation flying of multiple unmanned aerial vehicles (UAVs) found numerous applications in various areas such as surveillance, industrial automation and disaster management. The accuracy and reliability for performing group tasks by multiple UAVs is highly dependent on the applied control strategy. The formation and trajectories of multiple UAVs are governed by two separate controllers, namely formation and trajectory tracking controllers respectively. In presence of environmental effects, disturbances due to wind and parametric uncertainties, the controller design process is a challenging task. This article proposes a robust adaptive formation and trajectory tacking control of multiple quad-rotor UAVs using super twisting sliding mode control method. In the proposed design, Lyapunov function-based adaptive disturbance estimators are used to compensate for the effects of external disturbances and parametric uncertainties. The stability of the proposed controllers is guaranteed using Lyapunov theorems. Two variants of the control schemes, namely fixed gain super twisting SMC (STSMC) and adaptive super twisting SMC (ASTSMC) are tested using numerical simulations performed in MATLAB/Simulink. From the results presented, it is verified that in presence of disturbances, the proposed ASTSMC controller exhibits enhanced robustness as compared to the fixed gain STSMC.
Сarbon nanoscale tribological materials
Authors: Selyutin G. E. , Dunaev A. V.
Published: March 2021

The results of the development and testing of nanodiamond triboactive from Krasnoyarsk Institute of chemistry and chemical technology, Krasnoyarsk Institute of Biophysics together with "RealDzerjinsk", as well as the results of the development of the new triboactive based on nano carbon fi bers. It is proved that in contrast to pure nanodiamond powders imported nanomaterials explosion technologies graphite represent pseudoalpina nanoparticles surrounded by a carbon shell. Saturating them various peripheral organic compounds can be sedimentary stable carbon clusters, working at friction in oil is not for mechanism sergiovanni, and the mechanism of chemisorption and polymerization components triborate. A new, more technologically advanced and cheaper tribological material GRAF SB on the basis of on nano carbon fi bers, are no less eff ective nanodiamond, only works on mechamechanism of adsorption and chemisorption.
Study of the duration of operation of teat rubber milking machines
Authors: Soloviev Soloviev , Kozlov A. N. , Timirbaeva A. I. , Olkhovatsky A. K.
Published: March 2021

The results of studies on the hardness of diff erent brands teat rubber of milking machines under static load in two ways: by elongation and torque smykaemosti opposing walls of the rubber.
Promising water-fuel emulsion
Authors: Vorobyov Yu. V. , Dunaev A. V. , Malakhov V. A.
Published: March 2021

The analysis of methods and means of preparation of a stable water-fuel emulsion, as well as the results of its preparation on the technology of Tambov state tech-nical University are presented.
Beyond Bycatch: The Species Diversity of Tonguesole (Pleuronectiformes: Cynoglossidae) in Coastal Fisheries of the Tanintharyi Region, Southern Myanmar
Authors: SEGURA-GARCIA IRIS , SOE SABAI , TUN NYO-NYO , BOX STEPHEN
Published: March 2021

Flatfishes in the family Cynoglossidae are an important coastal fishery in Myanmar. Due to the overlapping morphologies of multiple tonguesole species, caught both as bycatch from trawl fisheries and targeted specifically by small scale fishers, they are all marketed under a single local name, “khwayshar”. This presents a management challenge given the potential differences in the species-specific life-histories, population dynamics, fishing vulnerability and harvest rates. This study investigated the species diversity of tonguesole landings from coastal communities of the Tanintharyi Region of southern Myanmar. DNA barcoding was used to distinguish potentially 10 different species, of which five were identified to species level and five at the genus level. Unconfirmed genetic identifications were based on external morphology. The poor efficacy of DNA barcoding for tonguesole species identification resulted from the limited DNA barcode reference sequences available for the family Cynoglossidae in public databases. An asymmetric occurrence and relative abundance of the identified species in landing sites where samples were collected suggested that the most common species was Cynoglossus oligolepis (Bleeker, 1855), a new species record for Myanmar, followed by Cynoglossus lingua Hamilton, 1822. The results of the present study provide new information to characterise the tonguesole fishery as a first step in the development of management plans for the coastal fishery in Myanmar.
Bacterial Communities Associated With Penaeus vannamei Boone, 1931 Surface and Its Rearing Water in Biofloc Culture System
Authors: BALIGA PALLAVI , GOOLAPPA PUNEETH THADOORU , SHEKAR MALATHI , GIRISHA S.K. , K.S. RAMESH , UDYAVARA VILASINI , VENUGOPAL M.N.
Published: March 2021

The biofloc system is an ecologically sustainable shrimp culture system. The conglomerates of beneficial bacteria, algae and protozoa in pond water serve as a water quality management system and as a feed additive to the shrimps. This study aimed to characterise the microbial communities associated with the biofloc pond water and the surface of Penaeus vannamei Boone, 1931, reared in it using the Illumina Miseq sequencing technology. The multiple alpha diversity measures indicated the shrimp surface samples to be richer in diversity than the pond water samples. Analysis of the bacterial community revealed that Proteobacteria, Bacteroidetes, Planctomycetes and Cyanobacteria formed the principal phyla. There was a shift in the relative abundance of bacterial communities at each time point. The operational taxonomic units (OTU) analyses revealed that 18.38 % OTUs were shared by the pond water samples, the shrimp surface samples shared 29.35 % at the three different time points. PICRUST analysis revealed that the bacterial communities in the biofloc rearing water, and shrimp surface, were likely involved in intensive microbial metabolism and core housekeeping functions. The information generated will help understand the bacterial community composition associated with optimal water quality and shrimp health in a biofloc culture system.
Histopathology of Anilocra leptosoma Bleeker, 1857 (Isopoda, Cymothoidae) Infestation on Its New Host Nematalosa nasus (Bloch, 1795) From India
Authors: SURESH AMRUTHA SHYLA , NAIR BALAMURALI RAGHAVAN PILLAI SREEKUMARAN , UNNI ARYA , MANGALATHETTU BINUMON THANKACHAN
Published: March 2021

Cymothoid isopods are parasitic crustaceans that cause serious impact on marine fish and might lead to fish mortality and consequently, economic losses. Histopathological alterations caused by Anilocra spp. have not been studied well. This study aims to report the histopathological changes caused by Cymothoid, Anilocra leptosoma Bleeker, 1857 in the skin of Bloch's gizzard shad, Nematalosa nasus (Bloch, 1795). Histopathological examination of processed skin tissues showed changes caused by A. leptosoma, such as hyperplasia and erosions of the epidermis associated dermal oedema and muscle degeneration. The host response also included an aggregation of subepithelial dense sheets of hemosiderin-laden macrophages within the dense mixed inflammatory cells. The cymothoid, A. leptosoma are serious parasites of marine fish that can cause severe economic loss in the commercially important fish species. The present study represents the first record of the parasitic cymothoid, A. leptosoma on N. nasus from India.
POLA PENGGUNAAN RUANG DAN WAKTU RUSA SAMBAR (Rusa unicolor) DI RAGUNAN
Authors: Irni Julaili
Published: March 2021

Daily activities are all activities carried out by animals daily starting from the morning out of the nest until late in the evening and back again to the nest. This study aims to determine the activity pattern of sambar deer (Rusa unicolor). This observation was carried out at the Ragunan zoo which was carried out in 3 stages, namely morning, afternoon and evening. This study observed the patterns of time use and space use observed in sambar deer with 5 age class categories, namely adult males, adult females, young males and young females. The results of the research obtained from the activity of the sambar deer in the morning, namely the allocation of time for daily activities in the morning for each different age class, the allocation of time for feeding, moving, and resting activities during the daytime period for each individual age class of the deer is different and the time allocation for daily activities in the afternoon for each age class is different. Most of the sambar deer in Ragunan prefer to be in the grass below the stands for their activities. Time allocation (time budget) for sambar deer in age class and sex is influenced by the time of activity (morning-afternoon-evening).
La pensée et le mouvant : le droit à l’épreuve de l’environnement
Authors: Pierron Jean-Philippe
Published: March 2021

The thought and the moving. The law facing the environment.

Ethics and environmental law, without sanctify the nature, work towards a new agreement between man and nature, uniting a great conscience of community membership and a requirement of responsability. The objective is to find a new balance between environment, value and law, by devising a new interpretative regime and an updated understanding of humanity. This agreement underpins a thought formulated under the unfortunate expression of «natural contract » . From this perspective, does the law have to convey in practical decisions and positive expressed decisions the recovered sence of our belonging ?
Le territoire du risque
Authors: Moliner-Dubost Marianne
Published: March 2021

The territory of risk. Risk is deeply connected to the territory : it shapes its future and is also historically marked with its imprint. Indeed, risk limits the affectation or the use of the space for the future : it is a question of limiting the exposed populations and thus of mastering the urbanization in risk areas, either by making the high-risks areas unbuildable or by refusing building permits for safety reasons. But when the urbanization extended and moved closer to the source of danger, it is necessary to go back. There is a need to control the risk in the urbanized areas, by neutralizing the most exposed spaces or by transferring or eliminating the source of the risk, that which is a very exceptional practice.
De la loi de 1976 à la loi de 2016 : le préjudice écologique : après les hésitations, la consécration
Authors: Malet-Vigneaux Julie
Published: March 2021

The ecological prejudice. For many years, thanks to the jurisprudence and under the pressure of the legal doctrine, the legislator is trying to recognize the “pure” ecological prejudice because of its specificities. The legislator has first provided answers based on administrative procedure with the transposition of the European Directive on environmental liability. In turn, judges have tried to answer these questions based on the civil liability under the ordinary rule. Whilst significant, these inroads remained inadequate about the compensation and required a new legislative intervention. Forty years after the recognition of the general interest of the protection of nature, it is finally done. The 2016 biodiversity bill entrenches the «ecological prejudice » and its reparation in the civil code.
La contribution limitée des Conférences des Parties aux conventions environnementales pour assurer un développement durable des biocarburants
Authors: Pereira de Andrade Priscila
Published: March 2021

L’utilisation des biocarburants a été indirectement suscitée par le droit international de l’environnement en tant que moyen de répondre au réchauffement climatique. Toutefois, les effets négatifs de leur fabrication n’ont pas été appréhendés. Si l’on ne voit actuellement pas se profiler de perspectives d’élaboration d’instruments internationaux «durs » (hard law) visant à assurer de façon spécifique le développement durable des biocarburants, on assiste en revanche à l’émergence d’instruments internationaux «mous » (soft law) dans ce domaine. C’est dans le contexte des Conférences des Parties (COP) aux conventions environnementales que le problème de la durabilité des biocarburants commence à être timidement appréhendé. Dans cet article, on verra que les nombreux travaux entrepris sur les biocarburants dans le cadre de la Convention de Ramsar et de la Convention sur la Diversité Biologique témoignent d’un certain progrès et illustrent comment le droit international de l’environnement peut évoluer grâce aux activités quasi législatives des COP. Malgré cela, en raison de leur faible valeur juridique, la contribution de ces deux COP, en matière de régulation du développement durable des biocarburants, demeure limitée.
Chronique de droit privé et de droit économique de l’environnement
Authors: Doussan Isabelle , Steichen Pascale
Published: March 2021

Au cours de ces dix-huit derniers mois, quelques traits saillants en droit économique et en droit privé de l’environnement méritent d’être relevés. Si l’on peut regretter que le principe de l’intégration de l’environnement dans les autres politiques n’ait pas franchi, en droit de l’UE, la porte des aides d’État, on peut se réjouir de la transposition, en droit interne, de la directive sur les marchés publics ayant abouti à l’ordonnance du 23 juillet 2015 intégrant davantage la dimension du développement durable dans la commande publique. En reconnaissant que cette dernière est mise au service de la transition vers l’économie circulaire, la loi du 17 août 2015 relative à la transition écologique pour la croissance verte, conforte le dispositif. Le système commercial multinational confirme plus modestement sa capacité à ne pas ignorer les préoccupations environnementales tandis qu’en droit interne, le changement climatique est pris en compte pour faire évoluer plus efficacement le contenu du rapport de gestion des sociétés. Le droit social n’est pas indifférent au sort des salariés exposés aux risques mais le curseur du préjudice d’anxiété peine à se fixer. Il en est de même pour la responsabilité des diagnostiqueurs immobiliers pour qui la variabilité des options jurisprudentielles confine à l’incohérence. La question de savoir si le droit économique pourra s’enrichir des réformes du projet de loi sur la biodiversité reste toujours en suspens.
Une vraie fausse création juridique : le principe de non-régression
Authors: Prieur Michel
Published: March 2021

Le principe de non-régression n’est pas une idée nouvelle, car il s’applique déjà en matière de droits de l’homme. Mais sa consécration en droit de l’environnement est une innovation juridique. Elle a été le fruit d’une action conjuguée de la doctrine et de la jurisprudence. Les péripéties de sa consécration à l’échelle internationale et dans certaines lois nationales sont retracées dans cet article par un des acteurs de la doctrine qui est sorti des bibliothèques pour convaincre les décideurs.
La doctrine dans la jurisprudence européenne. Expériences de droit de l’environnement
Authors: Billet Philippe
Published: March 2021

La doctrine est omniprésente dans la jurisprudence européenne, dont elle inspire les solutions, mais c’est une présence discrète. On peine à trouver des références formelles à celle-ci, si ce n’est dans les opinions des juges de la CEDH ou dans les conclusions des avocats généraux auprès de la CJUE. Elle est en revanche intellectuellement plus présente, ce qui permet de fonder les solutions retenues.
Biodegradable temporising matrix in severe meningococcal septicaemia: a case report
Authors: Jennings Matthew , Willet Jake , Coghlan Patrick , Solanki Nicholas S , Greenwood John E
Published: March 2021

Expanding experience with NovoSorb Biodegradable Temporising Matrix™ (BTM, PolyNovo Biomaterials Pty Ltd, Port Melbourne, Victoria, Australia) for complex wounds encouraged its use in the following case, which required reconstruction of extensive soft-tissue defects with exposed bone resulting from the sequelae of meningococcal B infection with septic shock and disseminated intravascular coagulation.
The times they are a-changin'
Authors: Chong David K
Published: March 2021

n/a
Uçucu Küllü Kendiliğinden Yerleşen Betonun Özellikleri Üzerine Ön Isıtmanın Etkisi
Authors: ARDAHANLI Metehan , OLTULU Meral , ALAMERİ Ibrahim
Published: March 2021

Kendiliğinden yerleşen beton, kendi ağırlığı ile yerleşme yeteneğine sahip, sıkıştırma ve yerleştirme için vibrasyon gerektirmeyen bir betondur. Geleneksel beton ile karşılaştırdığımızda minimum işçilik gerektirmesi, ekonomik olması, hızlı uygulanması ve sık donatı arasında ayrışma oluşmadan kalıp içerisini kolaylıkla doldurabilmesi önemli avantajlarıdır. Karışım dizaynı ve üretimi özel bir hassasiyet gerektirmektedir. Bu çalışmada su çimento oranı sabit tutularak farklı oranlarda uçucu kül ilavesi ile elde edilen kendiliğinden yerleşen betonlar için erken yaşta ön ısıtmanın, beton hidratasyonuna etkisinin belirlenmesi amaçlanmaktadır. Üretilen numunelerde, bir grupta 28 gün boyunca su küründe (ön ısıtmasız) bekletilirken diğer grup ise ön ısıtma (1 gün boyunca 75℃) etkisinde bırakılmıştır. Elde edilen numunelere Kendiliğinden yerleşen beton taze beton deneyleri ve sertleşmiş beton mekanik deneyleri uygulanmıştır. Numunelerde birim ağırlık, basınç dayanımı, eğilmede çekme dayanımı ve yarmada çekme dayanımı ölçülmüştür. Eğilmede çekme dayanımı deneyinde her 2 grupta en iyi sonuç %30 uçucu kül katkısı ile elde edilirken yarmada çekme dayanımı deneyinde de en iyi sonuç %30 uçucu kül katkılı ön ısıtmasız numunelerde gözlemlenmiştir. Elde edilen sonuçlara göre ön ısıtmasız numunelerin basınç dayanımı, ön ısıtmalı numunelerden daha yüksek olduğu görülmüştür. Ek olarak uçucu küllü betonların ön ısıtmaya maruz kaldıklarında olumlu etki gösterebileceği bu çalışma ile belirlenmiştir.
How to implement sub-national poverty lines in a SOUTHMOD country model using conditional constants: The case of UGAMOD
Authors: Noble Michael
Published: March 2021

This note describes how to incorporate sub-national poverty lines into a SOUTHMOD country model using conditional constants within the constants function in such a way that the Statistics Presenter can generate national-level poverty statistics. The Uganda tax-benefit microsimulation model UGAMOD is used as an example.
Soulagement et inquiétude, espoir et peur – le chemin diagnostic d’une mutation SLC16A2
Authors: Lämmle Alexander , Schaller André , Rusca Nicolas , Kurth Sandra , Salvisberg Claudia , Fuhrer Kradolfer Katharina , Wyder Corinne
Published: March 2021

? Souvent les maladies rares ne sont longtemps pas reconnues, elles sont donc sous-diagnostiquées et on a tendance à sous-estimer leur incidence. Et les victimes sont en première ligne les patients et leurs familles. Par cet article nous souhaitons montrer à quels défis se voient confrontées les personnes avec une maladie rare, quelles expériences marquent leur quotidien et comment nous, le système de soutien, pouvons leur apporter la meilleure aide possible. Des entretiens avec des questions souvent très personnelles ont été menés avec les parents d’enfants atteints. Les réponses se trouvent sous différentes formes dans ce texte.
Maladies héréditaires du métabolisme chez l'adulte: quelle situation en Suisse?
Authors: Tran Christel , Superti-Furga Andrea , Hochuli Michel
Published: March 2021

Les maladies héréditaires du métabolisme (MHM), sont la conséquence du déficit d’origine génétique d’une enzyme ou d’une protéine régulatrice impliquées dans certaines voies métaboliques. L’objectif de cet article est de donner un aperçu du réseau Suisse mis en place autour des MHM de l’adulte et d’illustrer les particularités de prise en charge de ces patients avec quelques cas emblématiques.
Métodos de evaluación de la calidad posicional en Hispanoamérica: análisis de la situación
Authors: Ariza-López F. Javier , Xavier Emerson , Chicaiza Elena , Buenaño Xavier
Published: March 2021

La exactitud posicional constituye un aspecto de la calidad de la información geográfica primordial en cualquier aplicación Geomática, y es clave para lograr interoperabilidad entre conjuntos de datos. El objetivo de este artículo es identificar los métodos de la evaluación de la calidad posicional que están siendo aplicados en los países de Hispanoamérica y, dentro de éstos, los que han participado en el Proyecto Diagnóstico de la situación actual sobre las metodologías y procedimientos empleados para la evaluación de la calidad de la Información Geográfica” financiado por el IPGH. Las normas base que son aplicadas se corresponden con los métodos americanos como: EMAS, NMAS, NSSDA, PSADG. La mayoría de estas normas asumen normalidad, pero hay nuevas tendencias como la abierta por norma española UNE 148002, que supone un cambio de paradigma. Finalmente, se presentan los resultados de un estudio sobre el nivel de madurez nacional con respecto a la evaluación de la calidad posicional y que viene a concluir que, en los países analizados, este tipo de evaluaciones se encuentran, en la mayoría de los casos, en el nivel inicial, exceptuando España y Brasil
Proyección Cónica Equivalente de Albers: propiedades y aplicación para México
Authors: Vallejo Velázquez Mariana , Navarro Moreno Jesús Abraham
Published: March 2021

La cartografía nacional de México emplea de manera oficial tres proyecciones: la Universal Transversa de Mercator, utilizada en las cartas topográficas para escalas medianas y grandes; la Cónica Conforme de Lambert, adaptada a las condiciones del país para su representación en escalas pequeñas; y la Normal de Mercator, empleada con fines de navegación marítima. El uso por largo tiempo de estas proyecciones ha sido asimilado por la comunidad científica y se emplean de forma regular; no obstante, la investigación cartográfica relacionada con esta temática se ha detenido y no se ha buscado la aplicación de otras proyecciones cartográficas en el afán de alcanzar una mejor representación de los diversos temas de investigación, lo que impacta también en la precisión de los datos obtenidos. El presente trabajo tiene por objetivo mostrar el empleo de la proyección Cónica Equivalente de Albers con las adaptaciones de parámetros necesarios; en este sentido, se presentan las formulaciones que posibilitan la proyección de las coordenadas, el análisis de las deformaciones y la concepción una cartografía nacional a escala 1:500,000; subsecuentemente, el trabajo también pretende estimular la reflexión en torno a las posibilidades que tiene esta proyección que no preserva el ortomorfismo, considerado hasta ahora como única propiedad en la cartografía nacional mexicana.
Detección digital de Sistemas Convectivos de Mesoescala a partir de imágenes meteorológicas multiespectrales
Authors: Ramírez Salomón , Lizarazo Ivan
Published: March 2021

La identificación exacta de Sistemas Convectivos de Mesoescala (SCM) no es una tarea sencilla. En el presente trabajo se aplicaron los algoritmos de aprendizaje de máquina (ML) no paramétricos Máquinas de Soporte Vectorial (SVM), Árboles de Decisión (DT) y Bosques Aleatorios (RF) para detectar SCM, a partir de una serie de sub-escenas de imágenes meteorológicas tomadas por el satélite GOES-13 el 03 de abril de 2013 cada media hora desde las 11:45 hasta las 22:15 horas, Tiempo Universal Coordinado (UTC), que cubren el territorio colombiano. Los resultados obtenidos por estos métodos fueron contrastados con el método tradicional denominado Temperatura de Brillo (TB). Para la evaluación de los resultados se empleó STEP (shape, theme, edge, position), un método que evalúa la similitud geométrica y temática entre objetos, tomando como referencia un conjunto de datos de alta exactitud extraído de imágenes de precipitación de la Misión para la Medición de Lluvias Tropicales (TRMM). El objetivo de este trabajo fue determinar si al emplear información de varios canales espectrales de imágenes meteorológicas en lugar de usar un solo canal infrarojo (IR) como lo hacen las técnicas tradicionales, es posible obtener resultados más exactos en la detección de SCM. Los resultados experimentales mostraron que los algoritmos DT y RF proporcionan una detección más exacta que la obtenida por el algoritmo tradicional IR-TB para detectar SCM, mientras que los resultados del algoritmo SVM, sugieren que no es favorable su uso para aplicaciones prácticas. Los criterios de decisión del modelo de clasificación obtenido por DT podrían ser replicados varias veces en diferentes fechas sin realizar interpretación visual en cada imagen, siendo muy útil para aplicaciones operativas bajo el enfoque que aquí se presenta.
Desarrollo de estrategias para integración de las Redes Verticales de América del Sur con base en los términos de referencia SIRGAS/GGOS/IAG
Authors: Santacruz Jaramillo Andrea Galudht
Published: March 2021

Los Sistemas Verticales de Referencia (SVRs) junto con sus materializaciones nacionales, regionales y globales, se encuentran en una evolución significativa en los últimos años debido a que son fundamentales para el monitoreo de procesos físicos asociados a cambios en el Sistema Tierra. El aval de los sistemas de observación Terrestre proviene del Global Geodetic Observing System (GGOS) soportado por la International Association of Geodesy (IAG). Estas organizaciones se basan en estándares y términos de referencia para generar información geoespacial precisa y confiable. El Sistema de Referencia Geocéntrico para las Américas (SIRGAS), referente a su Grupo de Trabajo III: Datum Vertical, busca atender las exigencias de GGOS/IAG para proporcionar un Sistema Vertical de Referencia SIRGAS (SVRS) moderno. Para esto se debe homogeneizar y unificar las Redes Verticales de Referencia Nacionales (RVRNs) considerando el campo de la gravedad. Esta investigación presenta la metodología desarrollada para un inventario de metadatos de la RVRN del Ecuador en vista de los términos de referencia de SIRGAS/GGOS/IAG, el cual puede servir de base para el desarrollo de estrategias para integrar las Redes Verticales de América del Sur. Además, este inventario contribuye a la futura creación de una Infraestructura de Datos Espaciales para las Américas, según los objetivos de UN-GGIM: Américas.
Geografía del carbono en alta resolución en bosque tropical amazónico del Ecuador utilizando tecnología LiDAR aerotransportada
Authors: Molina Xavier , Farjas Mercedes , Ojeda Juan Carlos
Published: March 2021

La estimación de la biomasa de la vegetación terrestre en bosque tropical es un tema de gran interés para reducir las emisiones de carbono asociadas a la deforestación y la degradación forestal (REDD+). Las estimaciones de densidad de carbono sobre el suelo (ACD) en base a inventarios de campo y datos provenientes de sensores aerotransportados, en especial con sensores LiDAR, han conducido a un progreso sustancial en el cartografiado a gran escala de las reservas de carbono forestal. Sin embargo, estos mapas de carbono tienen incertidumbres considerables, asociadas generalmente al proceso de calibración del modelo de regresión utilizado para producir los mapas. En este estudio se establece una metodología para la calibración y validación de un modelo general de estimación de ACD usando LiDAR en el Parque Nacional Yasuní en Ecuador. En el proceso de calibración del modelo se considera el tamaño y la ubicación de las parcelas, la influencia de la topografía y la distribución espacial de la biomasa. Para el ajuste y validación del modelo se propone un esquema de muestreo estratificado por posiciones topográficas (valle, ladera y cima). La validación del modelo general para toda la zona de estudio presentó valores de RMSE= 5.81 Mg C ha-1, R2 = 0.94 y sesgo= 0.59, mientras que, al considerar las posiciones topográficas, el modelo presentó valores de RMSE= 1.67 Mg C ha-1, R2= 0.98 y sesgo= 0.23 para el valle; RMSE= 3.13 Mg C ha-1, R2= 0.98 y sesgo= - 0.34 para la ladera; y RMSE= 2.33 Mg C ha-1, R2= 0.97 y sesgo= 0.74 para la cima. Los resultados muestran el potencial de los datos LiDAR para caracterizar la estructura vertical de la vegetación en un bosque altamente diverso, permitiendo realizar estimaciones precisas de ACD, y conocer patrones espaciales continuos de la distribución de la biomasa aérea
Editorial
Authors: Coll Escanilla Editora invitada: Alejandra
Published: March 2021

Participar como editora invitada de este número especial dedicado a la temática de la “Cartografía Inclusiva”, ha sido una gran oportunidad para reunir a distintos autores que han trabajado por más de una década en el área de la discapacidad visual fundamentalmente, cuyos resultados en varias de las experiencias que se incluyen, permiten que se vean beneficiados todos aquellos que pueden hacer uso de su tacto, tengan o no discapacidad.

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Control de brazo robótico clasificador mediante HMI y servidor Web
Authors: Luna-Puente Rafael , Peréz-Chimal Rosa Janette , Hernández –Mosqueda Carlos , Muñoz-Minjarez Jorge Ulises
Published: March 2021

The use of automated machines and its manipulation using artificial intelligence is increasingly common to perform routine tasks within the industrial field. The present work aims to show the automation of a robotic arm, its monitoring and control using a web server and a Human Machine Interface (HMI) screen. For this work a robotic arm MITSUBISHI was programmed for the classification of pieces based on their color. Subsequently, this system is monitored and controlled employing the programming of a web page and the design of an HMI created using the TIA-Portal software. As a result of this methodology, a complete system of industry 4.0 will be obtained, which can be implemented to control and monitor a robotic arm using a HMI screen and Web Server in the current industry. The systems used to carry out the control were a PLC S300 (cpu313C 2 DP) with ASI CP 343 2 DP network card, with 5 slaves, Keypad (Slave 1) Module 2DI (Slave 2), Optoreflexive Sensor (Slave 3) Set of valves FESTO (Slave 4) Modules2DI 2DO (Slave 5) 2DO
an S1200 PLC (CPU 1214 C DC / DC / DC) an HMI screen (KTP600 Basic Mono DP) as color sort.
Impacto de la bioética en la educación universitaria: una mirada latinoamericana
Authors:   , Biscioni Diego Nicolás
Published: March 2021

La Bioética surgió a partir de la necesidad de abordar diversos conflictos desencadenados en los ambientes científicos, sobre todo en el área de la salud, desarrollándose inicialmente a partir del uso y aplicación de tecnologías. Abarca al ser humano, a la vida y a la supervivencia en el planeta, siendo un pilar fundamental de la Salud Pública. La educación en Bioética en Latinoamérica es el área determinada de conocimiento que aborda este trabajo, para ello se planteó el desafío de complementar desde perspectivas autóctonas a la bioética clásica y a partir de allí, se estableció como objetivo determinar el impacto de la Bioética latinoamericana en la educación superior de la región, mediante una metodología de Investigación-Acción Participativa. Todo ello con el fin de aportar a la enseñanza universitaria herramientas de análisis e intervención ajustados al contexto de la región y con el fin de despertar en los profesionales una posición crítica, responsable y reflexiva para la toma de decisiones, así como frente a los juicios y las opciones contempladas para la resolución de conflictos éticos apoyando el desarrollo de una conciencia ética latinoamericana. Dentro de los resultados obtenidos se destacan la identificación de investigadores y espacios orgánicos de desarrollo de la Bioética Latinoamericana, la conformación de espacios de articulación regional, la construcción de planes de intervención de los espacios de articulación y se finalizó con una propuesta curricular sobre Bioética Latinoamericana para ser aplicada en los ámbitos universitarios de formación en salud.
Leveraging Integrated Student Support to Identify and Address COVID-19-related needs for Students, Families, and Teachers
Authors: Pollack Courtney , Theodorakakis Maria , Walsh Mary E.
Published: March 2021

As COVID-19 shuttered schools, it created widespread student and family needs and exacerbated challenges stemming from longstanding racial and economic inequities. Here we examine how an evidenced-based, integrated student support intervention responded to systematically identify and address the academic and non-academic needs of students and families in 94 high-poverty, urban schools. We conduct thematic analysis of open-ended survey responses about intervention personnel’s work in spring 2020 and triangulate findings with descriptive analyses of service provision records and mid-spring estimates of crucial needs. We find that intervention schools developed specific processes to respond to immediate needs, which included resource, academic, and socio-emotional support. To accomplish this, the intervention leveraged existing processes and relationships to maintain intervention-specific practices, facilitate referrals and connections to resources, and expand direct intervention for education stakeholders. Findings elucidate practices for meeting academic and non-academic needs that affect student learning and that may arise in future schooling disruptions.
Dạy & Học số 33 - Chiêm nghiệm
Authors: Nguyen Linh-Chi , Anh Duong Phu Viet , Doan Phuong-Thuc , Chau Trinh Minh , Quynh Nguyen Thuy , Huyen Tran Thanh
Published: March 2021

Quý độc giả thân mến,Trong giáo dục, bên cạnh những kiến thức từ sách vở, thì kiến thức từ những trải nghiệm thực tế cũng là những bài học vô cùng quý giá. Cùng với đó, khi trong lớp học ta luôn khuyến khích học sinh học tập từ những người bạn của mình, thì học tập từ trải nghiệm của các giáo viên đồng nghiệp chắc chắn cũng mang tới những lợi ích tương tự. Với tinh thần này, BBT Lộn xộn xin gửi tới quý độc giả Dạy&Học số 33 với tựa đề “Chiêm nghiệm”. Tựa đề này được lấy cảm hứng từ dự án “On Teaching” của nhà báo Kristina Rizga. Dự án này là một nỗ lực truyền tải các bài học đa dạng từ những nhà giáo dày dặn kinh nghiệm khắp mọi nơi trên nước Mỹ. Bài viết “Giảng dạy tốt không chỉ là đúng phương pháp” là một bài đúc kết từ vô vàn phỏng vấn trong dự án trên về những yếu tố quan trọng nhất trong giảng dạy. Cùng với đó, chuyên mục “Dạy thế nào” mang tới những chia sẻ của nhà giáo Carrie Lam về “11 thói quen của một giáo viên hiệu quả” và “Ba cách sáng tạo để cho điểm và đưa ra phản hồi cho học sinh” của thầy giáo Ben Johnson.Mục “Góc nhìn” đưa tới một chiêm nghiệm tất cả chúng ta đều có thể đồng cảm trong năm vừa rồi là “Giảng dạy trong năm COVID: Một vài tâm sự”. Và một chiêm nghiệm khác chúng ta đều cần suy xét lại ở bất cứ thời điểm nào trong “Trường học đang thiếu đi điều quan trọng nhất trong học tập”.Sau 5 năm nghiên cứu về tác động của các chương trình dạy về cảm xúc - xã hội, dự án SECURe của trường Sau đại học Harvard về giáo dục đang đưa ra một số câu trả lời cho câu hỏi “Điều gì khiến chương trình học tập cảm xúc xã hội có hiệu quả?”. Mục “Quản lý giáo dục” cũng mang tới một chia sẻ của Hiệu trưởng Trường Tiểu học Whitsitt về việc cách “Gia tăng hiệu quả làm việc cho giáo viên mà không gây tình trạng kiệt sức”. Và “Thất bại trong giao tiếp: Chấm dứt bạo lực học đường” mang tới những chiến lược chống lại tệ nạn này cả ở góc độ làm việc với học sinh, với nhà trường và với pháp luật. Cuối cùng, “Framework giáo dục” kỳ này sẽ giới thiệu tới quý độc giả “Khuôn khổ MODEL - MELQO” giúp đo lường sự phát triển và học tập đầu đời.
Fiscal Distress of Hungarian Local Governments in the Light of the Debt Consolidation and the Reorganisation of the Municipal System
Authors: Rácz Tamás Attila , Tóth Balázs
Published: March 2021

The consolidation of the debt of the municipalities and the reorganisation of their tasks and funding were significant reforms of the Hungarian public sector. In this study, we examined the differences in the financial parameters of the period of 2005-2008 among the local governments which took part in the debt consolidation and which are remained out. We applied logistic regression on a sample of 230 local governments. The study also aims to examine how the reorganisation of the tasks and funding affects the differences between the two groups. Our results confirm that there were significant differences in their own revenues and operating balance. In the post-consolidation period, we found that the two groups are converged to each other, so the changes in the operation of the local governments reduced the previously existing differences. Besides that, our results show that the local governments of the sample improved their financial conditions, generally.
A reziliens és innovatív űripar magyar fejlesztési lehetőségei
Authors: Parragh Bianka , Báger Gusztáv , Kovács Árpád , Tóth Gergely
Published: March 2021

A vizsgált téma aktualitását indokolja, hogy az űripar ma az egyik leginnovatívabb, gyorsan fejlődő, válságokra kevésbé érzékeny, világméretekben rendkívül dinamikusan növekvő iparág. Rezilienciáját1 mutatja a 2020 tavaszától indult világméretű pandémiás járvány időszakában elért fejlődése. Világszerte munkahelyeket őrzött meg és újakat hozott létre, valamint technológiai-innovációs teljesítménye is töretlennek bizonyult. A cikk megalapozását szolgáló, módszerében felmérésekre, statisztikai és más adatbázisokra támaszkodó kutatás azt a célt szolgálta, hogy felvázolja a hazai űrszektor és űripar kontúrjait, és a magyarországi űrszektor számára fejlődési utat nyitó állami szerepvállalás lehetséges irányát, összetevőit. A tanulmány megállapította, hogy a magyar űripar - jóllehet, ma még szerény a hozzájárulása a társadalmi teljesítményhez - kis létszámú, de arányában máris jelentős, magasan képzett munkaerőt foglalkoztat, élenjáró technológiákat honosít meg. Magas innovációs teljesítményével, technikai-tudományos transzfereivel, jelenlegi kapacitásaival is hatással van a versenyképesség erősítésére. Megfelelő támogatással, átgondolt befektetésekkel az űripar hozzáadott értéke, növekedési és nemzetközi potenciálja, valamint a nemzetközi űripari értékláncokban való részvétele a jelenleginél jóval nagyobb arányban használható ki.
INVESTIGATING PWD REVISIT INTENTION FOR ENTREPRENEURIAL PASTRY COURSE AT SELAYANG COMMUNITY COLLEGE: THE MODERATOR ROLE OF GENDER
Authors: Abu Karim Mohd Hyrul , Che Hassan Mohd Khaidir , Muhamad Bahari Azmarita
Published: March 2021

People with disabilities (PWD) empowerment has become a topic of international discussion. Individuals from this population are more likely to be in low-paying jobs and have the lowest prospects for promotion of any group across most industries. It is important to train PWD students to be more confident and to become semi-skilled workers before they enter the workforce. In 2020, there is no course conducted at Selayang Community College (KKSY) for the PWDs in the Food and Beverage (F&B) industry training because of the pandemic covid-19. This study, therefore, aimed to examine the relationships between the three independent variables (attitude, subjective norms, and perceived behavioural control) and the dependent variable (PWD students’ revisit intention to attend pastry courses), using the Theory of Planned Behaviour (TPB) with gender as the moderating variable. The quantitative method was employed to investigate the relationships between the three independent variables in TPB and PWD’s revisit intention. Questionnaires were used to obtain data from 146 PWD students in the Klang Valley area. This study found that all three independent variables significantly influenced PWD students' intention to attend pastry courses at KKSY. Perceived Behavioural Control or Individual belief and control is important to PWD students and also helps teachers to predict what types of short course they most likely will attend to expand their skill acquisition. This study contributes to the body of knowledge regarding the PWD students’ attitude, subjective norms, and perceived behavioural control to the area of hospitality education research, Furthermore, educators should give more attention and encouragement to female PWD students to increase their entrepreneurial spirit.
CUSTOMER PREFERENCES ON SUSTAINABLE FASHION PURCHASES: A CONCEPTUAL MODEL
Authors: Delimarta Florencia Devina , Rahadi Raden Aswin
Published: March 2021

This research purpose is to investigate customer motivation when purchasing sustainable fashion. These research objectives are to investigate customers' perception toward sustainable fashion, to determine the preferences of customers in buying sustainable fashion, and the range of price limits of customers in purchasing sustainable fashion. Therefore, for this research, there are several papers that are being reviewed and preliminary research being conducted. The literature analysis and preliminary studies have shown that customer preferences such as Price, Quality, Design, Brand Image, and Promotion influencing sustainable fashion purchases. Based on the literature review and preliminary study, this research was able to produce a simple conceptual framework. This research’ findings will be useful for fashion brand owners in developing their business. These findings can be useful to create pricing strategies, marketing strategies, and product strategies.
THE QUALITIES OF LEADERSHIP AND THEIR EFFECT IN TUHFAT AL-NAFIS BY RAJA ALI HAJI
Authors: Mohd Yusof Amirul , Zakaria Norazimah
Published: March 2021

Tuhfat al-Nafis was a literary text or history of Malay historiography. As a Malay historiographical text, the scope of the times at that time are still patterned feudal and monarchical systems of government. The description of the monarchical leadership system is still the core and the ups and downs of a government depend on the qualities of the existing leadership. This paper aims to explain the leadership qualities found in the text of Tuhfat al-Nafis. These leadership qualities will be explained using the Islamic leadership approach. Tuhfat Al-Nafis was composed by a palace author named Raja Ali Haji. In writing Tuhfat Al-Nafis, Raja Ali Haji correspondence to fulfill the vision and mission of a government of Malay-Bugis. The findings of the study found that leaders who meet the characteristics of Islamic-based leadership such as good character, strong and ‘musyawarah’ make the government under his rule peaceful and prosperous.
Yabancı Dil Olarak Türkçe Öğretiminde Eğitsel Oyunların Kullanımının Akademik Başarı, Tutum ve Kalıcılığa Etkisi
Authors: EROL Sedat , ERDEM İlhan , AKKAYA Ahmet
Published: March 2021

Bu araştırmanın amacı, eğitsel oyunların yabancı dil olarak Türkçe öğretiminde kazanımlara ulaşmada, öğrencinin başarısına, derse karşı tutumuna ve öğrenilenlerin kalıcılığına etkisini belirlemektir. Araştırmanın çalışma grubu, 2018-2019 eğitim-öğretim yılında, Adıyaman Halk Eğitim Merkezinde, başlangıç (A1) düzeyinde yabancı dil olarak Türkçe öğrenen 8-12 yaş grubundaki öğrencilerden seçilmiştir. Eşleştirilmiş ön test- son test kontrol gruplu yarı deneysel desenin kullanıldığı araştırmada veri toplama aracı olarak, Erol (2019) tarafından geliştirilen “Başlangıç (A1) Düzeyi Türkçe Yeterlik Sınavı” ve “Yabancı Dil Olarak Türkçe Öğrenen Çocuklara Yönelik Tutum Ölçeği” kullanılmıştır. Araştırma sonucunda, eğitsel oyunlarla öğretimin uygulandığı deney grubu ile geleneksel öğretimin uygulandığı kontrol grubu arasında deney grubu lehine anlamlı farklılıklar ortaya çıkmıştır. Yabancı dil olarak Türkçe öğretiminde eğitsel oyunların kullanımının öğrenci başarısını artırdığı, kalıcı öğrenme ve olumlu tutum geliştirmeyi sağladığı sonucuna ulaşılmıştır.