bluuebunny/crossref_metadata_2025 huggingface dataset:
Mutational Analysis of c-KIT and PDGFRA in Canine Gastrointestinal Stromal Tumors (GISTs)
Authors: Morini Maria , Gentilini Fabio , Turba Maria Elena , Gobbo Francesca , Mandrioli Luciana , Bettini Giuliano
Published: July 2022

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the canine gastrointestinal tract and are diagnosed by the immunohistochemical expression of the receptor tyrosine kinase (RTK) KIT. Activating mutations of the proto-oncogenes c-KIT and PDGFRA drive GIST oncogenesis and are used to predict the response to RTK-inhibitors in human oncology. Currently, the frequency and significance of these mutations in canine GIST have not been adequately explored. Therefore, we investigated the mutational status of c-KIT (exons 9, 11 and 13) and PDGFRA (exons 12 and 18) genes by PCR followed by fragment analysis for c-KIT deletions and PCR followed by screening with DHPLC and direct sequencing confirmation for single nucleotide variations in 17 formalin-fixed paraffin-embedded canine GISTs confirmed by KIT immunopositivity. c-KIT mutations were detected in 47% of cases, with a mutation detection rate significantly higher (p = 0.0004, Fisher’s exact test) and always involving exon 11. A PDGFRA gene mutation (exon 18) was identified in one case. Even if follow-up data were not available for all cases, four cases with documented abdominal metastases displayed c-KIT mutations. These data confirm that c-KIT exon 11 mutations occur frequently in canine GISTs, and identify the presence of a PDGFRA mutation similar to human GISTs. This study also suggests a potential association of c-KIT mutation with more aggressive biological behavior.
Modal Characterization of Manual Wheelchairs
Authors: Lariviere Ophélie , Chadefaux Delphine , Sauret Christophe , Kordulas Layla , Thoreux Patricia
Published: July 2022

Manual wheelchair (MWC) users are exposed to whole-body vibrations (WBVs) during propulsion. Vibrations enter the MWC structure through the wheels’ hub, propagate according to the MWC dynamical response, and finally reach the user’s body by the footrest, seat, backrest, and handrims. Such exposure is likely to be detrimental to the user’s health and a source of discomfort and fatigue which could, in daily life, impact users’ social participation and performance in sports. To reduce WBV exposure, a solution relies on MWC dynamical response modelling and simulation, where the model could indeed be used to identify parameters that improve the MWC dynamic. As a result, it is necessary to first assess the MWC dynamical response. In this approach, experimental modal analyses were conducted on eleven MWCs, including daily and sport MWCs (tennis, basketball, and racing). Through this procedure, modal properties (i.e., modal frequencies, damping parameters, and modal shapes) were identified for each MWC part. The results pointed out that each MWC investigated, even within the same group, revealed specific vibration properties, underlining the difficulty of developing a single vibration-reducing system for all MWCs. Nevertheless, several common dynamical properties related to MWC comfort and design were identified.
Generate_SWMM_inp: An Open-Source QGIS Plugin to Import and Export Model Input Files for SWMM
Authors: Schilling Jannik , Tränckner Jens
Published: July 2022

SWMM is an open-source model and software developed by the US EPA for the simulation of rainfall-runoff and routing in water bodies, sewer systems and wastewater infrastructures. It has been applied in numerous practical works and research projects. For a new SWMM model, objects such as nodes, links and catchments can either be drawn via SWMM’s graphical user interface (GUI) or specified manually in a plain text file in “.inp” format (“input file”). Since the required data regarding sewer geometries and river systems are usually available as spatial data in a GIS environment, there is a need for user-friendly interfaces for the model setup. SWMM contains neither an import function for geodata nor processing tools as provided in geographic information systems (GIS) such as the open-source software QGIS. Existing approaches were script-based or required commercial all-in-one products. We developed a free and open-source QGIS plugin to generate SWMM models from geodata and to import existing SWMM input files into QGIS. An application example is presented to demonstrate the basic features and usage of the plugin.
Driving Effects and Spatial-Temporal Variations in Economic Losses Due to Flood Disasters in China
Authors: Zhang Zhixiong , Li Qing , Liu Changjun , Ding Liuqian , Ma Qiang , Chen Yao
Published: July 2022

The economic loss caused by frequent flood disasters poses a great threat to China’s economic prosperity. This study analyzes the driving factors of flood-related economic losses in China. We used the extended Kaya identity to establish a factor decomposition model and the logarithmic mean Divisia index decomposition method to identify five flood-related driving effects for economic loss: demographic effect, economic effect, flash flood disaster control effect, capital efficiency effect, and loss-rainfall effect. Among these factors, the flash flood disaster control effect most obviously reduced flood-related economic losses. Considering the weak foundation of flash flood disaster prevention and control in China, non-engineering measures for flash flood prevention and control have been implemented since 2010, achieving remarkable results. Influenced by these measures, the loss-rainfall effect also showed reduction output characteristics. The demographic, economic, and capital efficiency effects showed incremental effect characteristics. China’s current economic growth leads to an increase in flood control pressure, thus explaining the incremental effect of the economic effect. This study discusses the relationship between flood-related economic loss and flash flood disaster prevention and control in China, adding value for the adjustment and formulation of future flood disaster prevention policies.
Evaluation of Reference Evapotranspiration Estimation Methods for the Assessment of Hydrological Impacts of Photovoltaic Power Plants in Mediterranean Climates
Authors: Aschale Tagele Mossie , Sciuto Guido , Peres David J. , Gullotta Aurora , Cancelliere Antonino
Published: July 2022

Large-scale photovoltaic (PV) power plants may affect the hydrological cycle in all its components. Among the various components, evapotranspiration is one of the most important. As a preliminary step for assessing the impacts of PV plants on evapotranspiration, in this study, we performed an evaluation study of methods for estimating reference evapotranspiration (ETo). FAO and ASCE recommend the Penman–Monteith (PM) method for the estimation of ETo when the data for all involved variables are available. However, this is often not the case, and different empirical methods to estimate ETo, requiring mainly temperature data, need to be used. This study aimed at assessing the performance of different temperature- and radiation-based empirical ETo estimation methods against the standardized PM ETo method in an experimental photovoltaic power plant in Piazza Armerina, Sicily, Italy, where a meteorological station and a set of sensors for soil moisture were installed. The meteorological data were obtained from the Lab from July 2019 to end of January 2022. By taking the ETo estimations from the PM method as a benchmark, the study assessed the performance of various empirical methods. In particular, the following methods were considered: Hargreaves and Samani (HS), Baier and Robertson (BR), Priestley and Taylor (PT), Makkink (MKK), Turc (TUR), Thornthwaite (THN), Blaney and Criddle (BG), Ritchie (RT), and Jensen and Haise (JH) methods, using several performance metrics. The result showed that the PT is the best method, with a Nash–Sutcliffe efficiency (NSE) of 0.91. The second method in order of performance is HS, which, however, performs significantly worse than PT (NSE = 0.51); nevertheless, this is the best among methods using only temperature data. BG, TUR, and THN underestimate ETo, while MKK, BG, RT, and JH showed overestimation of ETo against the PM ETo estimation method. The PT and HS methods are thus the most reliable in the studied site.
Measuring Technical Efficiency for Closuring Yield Gap and Improving Water Productivity of the Irrigated Durum Wheat in Tunisia
Authors: Chemak Fraj , Mazhoud Houda , Rached Zouhair , Gara Anissa , Rahmeni Rahma , Ghannem Habib
Published: July 2022

In Tunisia, the development of the irrigated cereal sector plays a key role in the mitigation of the fluctuation of the rainfed production and to ensure a minimum of production. However, the archived yields remain under the expected potential performance, and the water productivity is very low. Hence, this work aims to investigate the performance of the irrigated durum wheat activity and to identify eventual determinants to improve the water productivity. To reach the objective, a field survey was carried out with a sample of 555 farmers. We adopted a data envelopment analysis approach to assess the technical efficiency and water use efficiency. A Tobit model was estimated to identify determinants of the technical performance. The results showed that the technical efficiency reached only 63%, which meant that farmers could increase the durum wheat yield from 3.5 tha−1 to 4.8 tha−1. The water use efficiency reached only 30%, which translates to an unwise use of the water resource. The results also showed an eventual improvement of the water productivity by more importantly saving the irrigation water rather than optimizing the production. To improve the performances, the results revealed some key determinants that could be taken into account by policy makers to implement appropriate strategies.
Applications of Agro-Hydrological Sensors and Models for Sustainable Irrigation
Authors: Puig-Bargués Jaume , Rallo Giovanni
Published: July 2022

In the last two decades, research on water resource monitoring and management has mainly been aimed at reducing irrigation water volume and energy consumption [...]
Nitrate Contamination in Groundwater: Evaluating the Effects of Demographic Aging and Depopulation in an Island with Intensive Citrus Cultivation
Authors: Kimbi Sharon Bih , Onodera Shin-Ichi , Ishida Takuya , Saito Mitsuyo , Tamura Masayuki , Tomozawa Yusuke , Nagasaka Itaru
Published: July 2022

Despite rapid population aging and depopulation in Japan, groundwater nitrate contamination still poses serious environmental problems. One of the main factors contributing to elevated nitrate levels in Japanese groundwater sources is agricultural intensification, frequently because of increased fertilizer use. We investigated the impact of population aging and depopulation on groundwater nitrate contamination on a western Japanese island that has extensive citrus farming. In comparison to Ocho village, where the average age of farmers is 73 years, Kubi village’s farmers are slightly older on average, at 76 years, and agricultural land has decreased by 46% over the past ten years, from 2005 to 2015. Ocho had 830 residents, which was twice as many as Kubi. In comparison to Ocho (4.8 mg/L), Kubi village had higher average NO3−−N concentrations (6.6 mg/L). NO3−−N contamination sources in Kubi and Ocho were determined using stable nitrogen isotopes and a Bayesian isotope mixing model. These source distributions were more strongly associated with social and land use factors. It was believed that the older farmers in Kubi employed a significant quantity of chemical fertilizers, which caused inefficient nitrogen uptake by plants, leading to increased leaching and more groundwater contamination than in Ocho.
Experience of Application of Natural Treatment Systems for Wastewater (NTSW) in Livestock Farms in Canary Islands
Authors: Mendieta-Pino Carlos A. , Garcia-Ramirez Tania , Ramos-Martin Alejandro , Perez-Baez Sebastian O.
Published: July 2022

A real-scale application experience Natural Treatment Systems for Wastewater (NTSW) operating in continues with livestock farms for one year. These systems are based on digesters, subsurface vertical flow constructed wetlands (SVFCW) and facultative ponds. Chemical Oxygen Demand removal efficiency (CODRE) has obtained between 70 and 90%. Likewise, it have been possible to compare the operation of cascade flow digesters (CFD) (<76% CODRE) versus complete mixing digesters (CMD) (<50% CODRE). Facultative ponds (FP) when combined with (SSFCW), removed a higher percentage of CODRE compared with ponds (92%). Correlations of interest have been found between the variables evaluated in each plant. Finally, different elements are alternated in the same system, this system is capable of supporting variations in changes in flow rate and organic load coming from the farm, maintaining an adequate elimination of COD and other parameters of interest.
A Comprehensive Approach for Floodplain Mapping through Identification of Hazard Using Publicly Available Data Sets over Canada
Authors: Mohanty Mohit Prakash , Simonovic Slobodan P.
Published: July 2022

Quantifying flood inundation and hazards over large regions is paramount for gaining critical information on flood risk over the vulnerable population and environment. Readily available global data and enhancement in computational simulations have made it easier to simulate flooding at a large scale. This study explores the usability of publicly available datasets in flood inundation and hazard mapping, and ensures the flood-related information reaches the end-users efficiently. Runoff from the North American Regional Reanalysis and other relevant inputs are fed to the CaMa-Flood model to generate flooding patterns for 1 in 100 and 1 in 200-year return period events over Canada. The simulated floodplain maps are overlaid on the property footprints of 34 cities (falling within the top 100 populated cities of Canada) to determine the degree of exposure during 1991, 2001 and 2011. Lastly, Flood Map Viewer—a web-based public tool, is developed to disseminate extensive flood-related information. The development of the tool is motivated by the commitment of the Canadian government to contribute $63 M over the next three years for the development of flood maps, especially in high-flood risk areas. The results from the study indicate that around 80 percent of inundated spots belong to high and very-high hazard classes in a 200-year event, which is roughly 4 percent more than observed during the 100-year event. We notice an increase in the properties exposed to flooding during the last three decades, with a signature rise in Toronto, Montreal and Edmonton. The flood-related information derived from the study can be used along with vulnerability and exposure components to quantify flood risk. This will help develop appropriate pathways for resilience building for long-term sustainable benefits.
Research on 3D Point Cloud Data Preprocessing and Clustering Algorithm of Obstacles for Intelligent Vehicle
Authors: Wang Pengwei , Gu Tianqi , Sun Binbin , Huang Di , Sun Ke
Published: July 2022

Environment perception is the foundation of the intelligent driving system and is a prerequisite for achieving path planning and vehicle control. Among them, obstacle detection is the key to environment perception. In order to solve the problems of difficult-to-distinguish adjacent obstacles and easy-to-split distant obstacles in the traditional obstacle detection algorithm, this study firstly designed a 3D point cloud data filtering algorithm, completed the point cloud data removal of vehicle body points and noise points, and designed the point cloud down-sampling method. Then a ground segmentation method based on the Ray Ground Filter algorithm was designed to solve the under-segmentation problem in ground segmentation, while ensuring real time. Furthermore, an improved DBSCAN (Density-Based Spatial Clustering of Application with Noise) clustering algorithm was proposed, and the L-shaped fitting method was used to complete the 3D bounding box fitting of the point cloud, thus solving the problems that it is difficult to distinguish adjacent obstacles at close distances caused by the fixed parameter thresholds and it is easy for obstacles at long distances to split into multiple obstacles; thus, the real-time performance of the algorithm was improved. Finally, a real vehicle test was conducted, and the test results show that the proposed obstacle detection algorithm in this paper has improved the accuracy by 6.1% and the real-time performance by 13.2% compared with the traditional algorithm.
Desarrollo de una aplicación móvil para el monitoreo de la fenometría vegetativa del maíz amarillo, en la sierra central ecuatoriana
Authors: Rojano Guamaní Vladimir Javier , Jaramillo Tenezaca Ginger Lissbeth , Cantuña Flores Karla Susana , Sandoval Ruilova Gustavo Adolfo , Bengochea Guevara José María
Published: July 2022

En este trabajo se presenta una aplicación móvil en la que se realizan observaciones de los parámetros de la fenometría vegetativa del maíz, es decir, valorar cuantitativamente el crecimiento de la planta teniendo presente las medidas de longitud y diámetro del tallo. Para el desarrollo de la aplicación móvil se emplea la metodología Mobile-D, la medición de la longitud y el diámetro del tallo en imágenes se basa en la colocación de un objeto de referencia junto a la planta y en el uso de técnicas del área del procesamiento digital de imágenes a través de la librería OpenCV. La precisión de la medición de la longitud y el diámetro se evalúa utilizando el estimador RMSE (error cuadrático medio) en un banco de cincuenta imágenes obteniendo una desviación estándar de la varianza de 5.41 milímetros para la longitud y de 5.27 milímetros para el diámetro.
Análisis comparativo de metodologías y herramientas tecnológicas para procesos de Business Intelligence orientado a la toma de decisiones
Authors: Guerrero Garcia Maria Jose , Rodas-Silva Jorge
Published: July 2022

La inteligencia de negocios a medida que pasa el tiempo adquiere mayor importancia y exige mayor competencia en las organizaciones, hoy en día las empresas tienen la necesidad de aplicar metodologías que se adapten e integren de manera positiva, tomando en consideración que cada negocio tiene sus propios procesos y determinadas actividades, es por ello que este artículo se centra en determinar como arma estratégica una comparativa de las metodologías Bill Inmon y Ralph Kimball, mediante un análisis de las características más importantes tomando parámetros de valoración las capacidades de mejoras, el grado de cumplimiento, objetivos y satisfacción, los avances en tecnologías de información ofrecen herramientas de gran capacidad que se han desarrollado para ello se pretende establecer un análisis estratégico de las herramientas tecnológicas Business Intelligence más utilizadas con el fin de evaluar sus fortalezas y debilidades para así alcanzar la mejora en la toma de decisiones y visión estratégica en cuanto a productividad de las organizaciones. Se obtuvo como resultados la metodología Kimball con un alto puntaje en sus características, debido a que esta metodología está diseñada para garantizar la utilización de los datos de manera rápida y en menor tiempo de implementación, así mismo la herramienta BI con mayor porcentaje en fortalezas fue PowerBI, debido a su visión empresarial, facilidad de uso y visualización e integración de datos.Las metodologías y herramienta de inteligencia de negocios son de vital importancia por que permiten una buena planificación de la producción en cada gestión de procesos, y optimización de costos dando así una mejora en la toma de decisiones.
El Frontend. Diseño web adaptativo y diseño web responsivo para el desarrollo de aplicaciones web
Authors: Chavez Calderón Jhonny Xavier , Zambrano Romero Walter Daniel , Cedeño Palma Emilio Antonio , Zambrano Zambrano Dannyll Michellc , Cotera Ramírez Gabriel Agustín
Published: July 2022

El desarrollo web ha evolucionado a gran escala, el presente artículo realiza una comparativa entre dos importantes marcos de diseño que son indispensables para el desarrollo de interfaces web, como son el marco responsivo y adaptativo, destacando sus principales ventajas y diferencias a través del método experimental, propiamente enfocado en el desarrollo de un portal web, que se desarrollará para mostrar información sobre la cantidad de  investigaciones científicas que publican las Facultades de la Universidad Técnica de Manabí, para el estudio comparativo se usó la herramienta Google Page Speed Insights, donde se aplicaron métricas de evaluación impuestas por W3C, con respecto al rendimiento y optimización. Para garantizar la calidad de la investigación se aplicó el método Delphi, en un cuestionario dirigido a 50 Docentes de diferentes Universidades Ecuatorianas, con la finalidad de conocer el marco de diseño más adecuado al momento de desarrollar y producir sistemas web.
Evaluación de la dieta de un grupo de usuarios de gimnasios de musculación
Authors: Cartaya Quintero Rocio , Iglesias Guevara Dairon , Brito Llera Adriel , Pérez Santana Danae
Published: July 2022

Los actuales estándares de belleza imponen al hombre fuerte y muscularmente definido como el ideal. A esto se suma el impacto positivo que tiene el ejercicio físico sobre la salud, de ahí que no sea de extrañar la tendencia cada vez mayor hacia la práctica de ejercicios físicos y de musculación, especialmente entre los jóvenes. Dicha actividad implica modificaciones en la dieta, generalmente sin asesoramiento especializado, siguiendo como pautas mayor consumo de proteínas y carbohidratos, no así de lípidos. Por tal motivo se evaluó la dieta de usuarios de dos gimnasios de musculación del consejo popular Versalles-Coronela del municipio La Lisa, La Habana. Participaron 45 voluntarios, distribuidos en tres grupos etarios (hasta 18 años, mayores de 18 y hasta 30 años y mayores de 30 años), a quienes se aplicó una encuesta de frecuencia de consumo de alimentos. Fueron procesados los datos con los programas Ceres+ y SPSS v22.0. Las dietas tuvieron un marcado exceso energético para los tres grupos etarios evaluados, aunque los aportes de los macronutrientes a la energía estuvieron en los rangos recomendados. Se detectaron valores altos de colesterol y azúcares simples, siendo el grupo etario intermedio el de mayor consumo. Por el contrario, existieron deficiencias en la fibra, algunas vitaminas y minerales que pueden poner en riesgo el rendimiento físico y la salud de estos usuarios de gimnasios. Las dietas evaluadas fueron inadecuadas para este sector poblacional y deben modificarse para mantener la salud y obtener los resultados físicos esperados.

Palabras clave: usuarios de gimnasios; dieta; nutrientes; salud.
Seguridad alimentaria en la comunidad rural Las Mercedes, Manabí-Ecuador
Authors: Loor Suárez Maria Lourdes , Sabando Vélez Katherine Gissell
Published: July 2022

Con el objetivo de evaluar la seguridad alimentaria en la comunidad rural Las Mercedes (Manabí, Ecuador), se realizó un estudio observacional descriptivo, transversal y prospectivo. Se empleó muestreo probabilístico, aleatorio simple, sin remplazo utilizando la fórmula para población contable o finita. La muestra quedó constituida por 37 hogares, en los mismos se aplicaron dos encuestas dirigidas a obtener información acerca de los niveles de seguridad alimentaria mediante la escala de inseguridad alimentaria y frecuencia de consumo de grupos de alimentos a la muestra seleccionada. Se determinó que el 97 % de los hogares se encuentran en algún nivel de inseguridad alimentaria; mostrando que solo el 65 % tiene acceso a los comestibles. Se relacionó el nivel de inseguridad alimentaria con la frecuencia de consumo de alimentos y se encontró que, a mayor nivel de inseguridad alimentaria, menor era el acceso y consumo de alimentos sin alcanzar sus requerimientos nutricionales para mantener nutrición adecuada que garantice estado óptimo de salud.

Palabras clave: seguridad alimentaria; alimentos; consumo; acceso.
MOVIMENTO POR UM BRASIL LITERÁRIO
Authors: Serra Elizabeth D’Angelo
Published: July 2022

MOVIMENTO POR UM BRASIL LITERÁRIO
Factibilidad de implementación de huertos orgánicos familiares en Pantano Abajo, municipio Miranda, estado Falcón, Venezuela
Authors: Martínez-Fernández José Ángel
Published: July 2022

Con el propósito de analizar la posibilidad para el desarrollo de huertos orgánicos familiares en el sector Pantano Abajo del municipio Miranda, estado Falcón. Se realizó un trabajo no experimental, descriptivo de campo; la muestra estuvo conformada por 20 familias a las cuales se les aplicó un cuestionario autoadministrado para conocer la información requerida. Los resultados evidencian que el 95% desconoce que es un huerto orgánico y un producto orgánico, no obstante, están interesados por conocer lo relacionado en esa materia. Igualmente, el 95% de familias están interesados en instalar huertos en sus casas y disponen de espacios para ello. El 100% está dispuesto a recibir capacitación en esta área, por otra parte, el 80% demanda conocer acerca de las raíces y tubérculos, el 10% hortalizas y el 10% de frutales; y el 95% está dispuesta a dedicarle tiempo a esta actividad.
Caracterización de biomasa vegetal con miras a su aprovechamiento en derivados de uso alimenticio
Authors: Toyo-Diaz Mitchell José , Toyo-Fernández Betsay María , Moreno-Quintero María Eugenia
Published: July 2022

La biomasa vegetal, es un material no aprovechado constituido de macromoléculas estructurales útiles en la obtención de derivados aplicables en la industria alimentaria. La investigación caracterizó diferentes biomasas para determinar su aplicabilidad en derivados de uso alimenticio. El análisis fisicoquímico de materias primas producidas en el estado Falcón resultó: corteza de cambur (Musa paradisiaca) (humedad 89,8%±0,4; pH 4,8±0,3; proteína cruda 4,3%±0,5; extracto etéreo 5,5%±0,3; azúcares totales 12,7%±0,2 y cenizas totales 13,46%±0,07), cardón dato (Lemairecereus griceus) (humedad 95,08%±0,32; pH 5,47±0,06; proteína cruda 3,65%±0,25; azúcares totales 15,50%±0,032 y cenizas totales 0,99%±0,001) y polvo de zábila (Aloe vera) (humedad 2,76%±0,12; pH 4,45±0,10; proteína cruda 4,37%±0,13; extracto etéreo 2,15% ±0,07; fibra cruda 16,94%±0,09; celulosa 19,76%±0,20; lignina 9,68%±0,30; hemicelulosa 12,45%±0,39 y cenizas totales en 13,68%±0,22). Los resultados son comparables a la cáscara de mango, naranja y cacao en la obtención de pectinas así como residuo de papa y cultivo de banano para producir enzimas celuloliticas.
Experiencia vivida del cuidado de la salud mental en el adulto mayor durante el aislamiento por COVID-19
Authors: Guerrero Castañeda Raúl Fernando , Luna Ruiz Tania Guadalupe , Páramo Ramírez Sandra Verónica , Razo Moreno Lizeth Alejandra , Vega Vázquez Isamar Eunice , Chávez Palmerín Sarai
Published: July 2022

Objetivo: comprender la experiencia vivida del cuidado de la salud mental en el adulto mayor durante el aislamiento por COVID-19. Método: estudio cualitativo fenomenológico, realizado en Guanajuato, México de mayo-diciembre 2021, personas mayores de 60 años, hombres y mujeres, recolección por bola de nieve con saturación de información (12 participantes), recolección de datos por entrevista fenomenológica telefónica, la cual fue audio grabada, método de análisis fenomenológico de Van Manen, respetando los criterios éticos del reglamento de la Ley General de Salud en Materia de Investigación para la Salud. Resultados principales: de los 12 participantes, 7 fueron mujeres y 5 hombres, con un rango de edad entre 60 y 79; surgiendo temas como: 1. Percepción de alteraciones emocionales, 2. Envejecimiento e importancia de la salud mental, 3. Temor al contagio y su cuidado, 4. Infodemia, 5. Actividades diarias para la salud mental. Conclusión general: el adulto mayor significa el cuidado de la salud mental con relación al envejecimiento y el ser adulto mayor en medio de una pandemia, esta salud mental fue cuidada a través del manejo de información y el ajuste de actividades diarias que fortalecen su bienestar emocional y cognitivo.
PROBABLE JUVENILE FRONTAL OF DASPLETOSAURUS HORNERI (DINOSAURIA: THEROPODA) FROM THE TWO MEDICINE FORMATION OF MONTANA, WITH IMPLICATIONS FOR TYRANNOSAURID ONTOGENY
Authors: Yun Chan-gyu
Published: July 2022

A partial left frontal (UCM 55499) of a small tyrannosaurid theropod from the Campanian Two Medicine Formation of Montana is described, and is considered to probably represent a juvenile of Daspletosaurus horneri. UCM 55499 compares favorably with the frontals of other young juvenile tyrannosaurid specimens, and its diminutive size suggests that the element comes from a small juvenile individual. Differences (including width of the nasal process, and degree of expansion of the postorbital buttress and the caudal shelf) between it and frontals of the larger individuals of Daspletosaurus horneri are similar to those between juveniles and adults of other tyrannosaurids such as Tyrannosaurus rex, suggesting that overall ontogenetic trends in the frontal bone of Daspletosaurus horneri are largely consistent with the patterns seen in other tyrannosaurids.
Temperature-dependent vibration energy harvesting performance of polyimide/(Na,K)NbO3 piezoelectric composites
Authors: Yamamoto Ryota , Hegendörfer Andreas , Mergheim Julia , Kakimoto Ken-ichi
Published: July 2022

A composite structure of piezoelectric particles and soft polymer composite material is one of the candidates that converts environmental vibration energy into electrical energy. Presently, expanding the usage of applications is needed in terms of the working environment at harsh temperatures. Polyimide is flexible and temperature-stable polymer. In this research, we report a synthesis of polyimide/(Na,K)NbO3 (PI/NKN) flexible composites. We constructed a setup, where vibration and heat are simultaneously applied to the PI/NKN composites. The frequency and temperature dependence of the output voltage were investigated at room temperature up to 200 °C. Relative permittivity, piezoelectric constant, and output voltage of the PI/NKN showed temperature stability. Flexibility and glass transition temperature of a polymer matrix are important factors. PI/NKN composites are potential energy harvesting materials with flexibility and excellent high-temperature stability.
An extraction method for areal forward current/voltage characteristics of circular GaN p+n diodes
Authors: Mochizuki Kazuhiro , Ohta Hiroshi , Mishima Tomoyoshi
Published: July 2022

Anode-size-independent forward current–density/voltage (V) characteristics of circular GaN p+n diodes were extracted (in the V range of 2.7−3.0 V) from measured ones by an estimation technique of the effective anode radius, followed by the least-squares fitting technique of peripheral-to-area ratio analysis. It was found that the extracted diffusion current of diodes with a higher p-type doping level is lower than that of diodes with a lower one and that both currents have an ideality factor of unity. Since these findings agree with the diffusion theory, the demonstrated method should be useful for theoretical analysis of GaN p+n diodes.
Cybersecurity incident response tabletop simulations for learning in classrooms and organizations
Authors: Pacheco Federico
Published: July 2022

Incident response tabletop simulation exercises allow training people in skills related to reactions and processes in crisis situations. This paper analyzes several experiences of tabletop simulations that resulted in learning of practical utility for the participants. After applying the traditional approach based on conversational interaction, and the modern approach based on interaction through virtual platforms, a new, more accessible and scalable modality was proposed, developed in free software, which allows taking this practice to any environment. In addition, it was found that the exercises carried out in educational environments improve the learning of the topics for both participants and observers.
Digital Twin-Assisted Edge Computation Offloading in Industrial Internet of Things With NOMA
Authors: Zhang Long , Wang Han , Xue Hongmei , Zhang Hongliang , Liu Qilie , Niyato Dusit , Han Zhu
Published: July 2022

Integrating digital twins (DTs) and multi-access edge computing (MEC) is a promising technology that realizes edge intelligence in 6G, which has been recognized as the key enabler for Industrial Internet of Things (IIoT). In this paper, we explore a DT-assisted MEC system for the IIoT scenario where a DT server is created as a digital counterpart of the MEC server, via estimating the computation state of the MEC server within the DT modelling cycle. To achieve energy and spectrally efficient offloading, we consider that IIoT devices communicate with industrial gateways (IGWs) through a non-orthogonal multiple access (NOMA) protocol. Each IIoT device has an industrial computation task that can be executed locally or fully offloaded to IGW. We aim to minimize the total task completion delay of all IIoT devices by jointly optimizing the IGW's subchannel assignment as well as the computation capacity allocation, edge association, and transmit power control of IIoT device. The resulting problem is shown to be a mixed integer non-convex optimization problem, which is NP-hard and challenging to solve. We decompose the original problem into four solvable sub-problems, and then propose an overall alternating optimization algorithm to solve the sub-problems iteratively until convergence. Validated via simulations, the proposed scheme shows superiority to the benchmarks in reducing the total task completion delay and increasing the percentage of offloading IIoT devices.
Design of Near-Field Beamforming for Large Intelligent Surfaces
Authors: Hu Sha , Wang Hao , ilter mehmet
Published: July 2022

In this paper, we propose a novel three-dimensional (3D) near-field beamforming (BF) design for Large Intelligent Surface (LIS). We firstly investigate the definitions of near-field and far-field of LIS, and derive the Fresnel near-field region where amplitudes variations are negligible and only phase variations worsen the harvested array-gains. We show that the Fresnel region which covers the majority part of near-field, can be enlarged by a factor of four when considering possible imperfectness from a conventional two-dimensional (2D) far-field BF. Therefore, it is of interest to design analog 3D-BF than can recover array-gain losses in this region. Secondly, with the proved decomposition theorem we show that the optimal 3D-BF can be decomposed into a 2D far-field BF and a one-dimensional (1D) near-field BF. The 2D far-field BF compensates phase variations from mismatches in the azimuth and elevation angles, while the 1D near-field BF compensates remaining phases variations caused by distance differences from the UE to different antenna-elements on LIS. Such a proposed “2D+1D” BF design reduces codebook size significantly and is fully compatible with the existing far-field BF in the fifth-generation new-radio (5G-NR) system. Thirdly, we analyze an optimal codebook design for the 1D near-field BF, and show that with a small codebook it can perform close to optimal. Numerical results further verify that our proposal is effective and robust to recover array-gains in the near-field of LIS. 
How the Target Matters: Semi-Targeted Model Poisoning Attack on Federated Learning
Authors: Sun Yuwei , Ochiai Hideya , Sakuma Jun
Published: July 2022

Existing model poisoning attacks on federated learning assume that an adversary has access to the full data distribution. In reality, an adversary usually has limited prior knowledge about clients' data distributions. In such a case, a poorly chosen target class renders an attack less effective. In particular, we considered a semi-targeted situation where the source class is predetermined but the target class is not. The goal is to cause the global classifier to misclassify data of the source class. Though approaches such as label flipping have been adopted to inject poisoned parameters into federated learning, it has shown that their performances are usually class-sensitive varying with different target classes applied. Typically, an attack can become less effective when shifting to a different target class. To overcome this challenge, we propose the Attacking Distance-aware Attack (ADA) to enhance a poisoning attack by finding the optimized target class in the feature space. ADA deduces pair-wise distances between different classes in the latent feature space based on the Fast LAyer gradient MEthod (FLAME). We performed extensive empirical evaluations on ADA by varying the factor of attacking frequency in four benchmark image classification tasks. Moreover, we studied the effectiveness of ADA when applying different defense methods. As a result, ADA succeeded in increasing the attack performance by 1.8 times in the most challenging case with an attacking frequency of 0.01 and bypassing existing defenses. Differential privacy which was the most effective defense still could not reduce the attack performance to below 50%.
Piattaforme magre
Authors: Romano Antonello
Published: July 2022

The chapter focuses on 'lean platforms' such as Airbnb, Uber, Flixbus and illustrates their spatialities in our society.
EDUCATION FOR SUSTAINABLE DEVELOPMENT: A COMMON GOOD FOR BOTH NOW AND THE FUTURE
Authors: Quendler Erika , Lamb Matthew James , Driouech Noureddin
Published: July 2022

"Altruistically speaking, humanity has now reached a point where it has recognised that it has a responsibility to achieve a development that is sustainable. This responsibility is outlined in the United Nations Sustainable Development Goals (SDGs). This notwithstanding, as an intrinsically selfish creature, humanity also has a need to fulfil its own needs. This concept is set out by Maslow. Education is undeniably a linch-pin in marrying these two concepts, aiming to meet the challenges and the needs of both today’s and future generations. Whether and how these needs are met for any learner affects the learner’s motivation to learn and the educator’s motivation to teach. Moreover, during their time in education learners form habits of mind, beliefs, and principles that will stay with them throughout their lives. This is why it is so crucial to reflect on the type of education that best ‘cultivates and guides the sustainable humanity’ of the learners. This is the challenge facing today’s Anthropocene society. Any approach must be based on the vision of a just and equitable future for the next generations on a stable and resilient planet. With this in mind, we describe the paradigm shift towards an education for sustainable development. Subsequently, one of the principle outcomes of this contribution is a series of eight features which could be used as a template for any realignment of education aiming to achieve sustainable development at the same time as fulfilling Maslow's needs. Finally, further research may build upon these conclusions so that researchers are spurred to examine the topic in more detail in future practical work."
UNDERSTANDING STUDENTS’ EXPERIENCES AFTER INCORPORATING INDIGENOUS PERSPECTIVES IN A POSTGRADUATE SCIENCE COMMUNICATION
Authors: Crump Vanessa , Davila Yvonne C
Published: July 2022

"Many Australian universities have recently incorporated Indigenous graduate attributes into their programs, and the University of Technology Sydney (UTS) is no exception. This project aimed to investigate students’ perceptions and experiences of learning about Indigenous Knowledge systems and culture while developing science communication skills. Advanced Communication Skills in Science is a core subject in the Master of Science program at UTS. An existing assessment task, a three-minute thesis style oral presentation, was reworked to include the Indigenous Graduate Attribute (IGA) developed for the Faculty of Science. Students researched an aspect of Indigenous Science, an area of emerging interest for cultural and scientific understanding, and a mechanism for empowering Australia’s diverse first nations peoples. They then presented their key message in three minutes using a single PowerPoint slide. This task allowed students to demonstrate an awareness and appreciation of multiple ways of developing understandings of nature while enhancing their ability to understand the role of science communication in the modern world. Students were surveyed at the beginning and end of the semester to establish their Indigenous Science conceptions and reflect on their experiences. Students demonstrated an outstanding ability to integrate appropriate Aboriginal and Torres Strait Islander knowledges, experience, and analysis into a key message. Most students reported greater familiarity with concepts such as Indigenous Science and provided richer definitions of what this means. When asked if understanding Aboriginal and Torres Strait Islander knowledges and cultural practices might impact their practice as a scientist, many felt their perspective had changed and that reflecting on their cultural values and beliefs had improved their cultural capability. Most students responded that this subject challenged (at least to a degree) some firmly held assumptions, ideas, and beliefs."
ON THE IMPORTANCE OF TELECOLLABORATION FOR THE DEVELOPMENT OF STUDENTS’ INTERCULTURAL COMMUNICATIVE COMPETENCE
Authors: Chodzkienė Loreta , Villarroel Ojeda Yaneth Eugenia , Martinez Corona Felipe , Kalnberzina Vita
Published: July 2022

"Although the idea of performing collaborative tasks by language students from geographically distant countries dates back to the end of the 20th century (Warschauer, 1996), its benefits were reconsidered once again after the Covid-19 pandemic lockdowns had halted students’ mobility and abated their enthusiasm for worldwide discoveries. The latter constraints reduced the number of natural opportunities for students to develop their intercultural communicative competence. To bridge the developmental gap, the attention was shifted toward the application of technologies engaging them in semi-authentic communication (O’Dowd, 2013), consequently, one of the modes of telecollaboration was chosen. The study focuses on the analysis of the outcomes of the telecollaboration project run by the teachers of the four universities: Vilnius University (Lithuania), the University of Latvia (Latvia), Los Lagos University (Chile), and the University of Austral (Chile). All the three stages (before, during, and after interaction) of the project are reviewed with a particular focus given on 64 students’ attitudinal reflections obtained via a designed questionnaire. The study also presents the analysis of the students’ feedback on the project in general, the challenges they were exposed to, and their personal achievements, including the development of intercultural communicative competence."
ACCELERATED VIRTUALIZATION OF HIGHER EDUCATION IN TIMES OF PANDEMIC: THE CASE OF AN ECUADORIAN UNIVERSITY
Authors: Ornellas Adriana , Herrera Pavo Miguel
Published: July 2022

"The purpose of the paper is to present and discuss the impact, challenges, and opportunities that the COVID-19 pandemic and related lockdowns have caused to the te aching and learning model of an Ecuadorian Higher Education Institution: the Universidad Andina Simón Bolivar (UASB). The discussion will be led from the perspective of various educational actors and different levels of decision-making. At the beginning of 2020, the COVID-19 pandemic that confined a large part of the world's population to their homes and paralyzed activity in practically all areas of human action, forced a rethinking of education at all levels. In addition, the massive closure of schools and universities led to the deployment of distance learning modalities through a variety of formats and online platforms, replacing traditional educational processes. Experts have called emergency remote teaching for this sudden and unforeseen shift of face-to-face classes to virtual modalities. This name comes to highlights that the solutions adopted in a very short period, in many cases, could not be based on well-founded models of e-learning and a well-planned learning process. Still, rather traditional practices were transferred from face-to-face education to online platforms, maintaining their conventional forms in terms of methodologies, teacher and student roles, typologies of activities, evaluation models, and so on. The work presents the case study of the successful transformation process of a Higher Education institution based on a face-to-face model to a remote model to continue providing training to its students despite the disruption caused by the confinement derived from the health crisis of COVID-19. The analysis of the data collected through a variety of methods that included interviews with faculty, the analysis of institutional documents, and a student survey highlights the complexity and adequacy of the strategies implemented by the educational community to make the transition from an emergency remote teaching to a quality online learning ecosystem."
IMPLEMENTING PSYCHOSOCIAL SUPPORT FOR CHILDREN AFFECTED BY THE BEIRUT BLAST: PROVIDING A SAFE PLACE IN THE MIDDLE OF CRISIS
Authors: Schenzle Steffi
Published: July 2022

"The Beirut blast on August 4, 2020 has left a large impact on the well-being of children. This paper is a preliminary presentation of a larger explorative case study investigating the experiences of psychosocial counsellors providing psychosocial support through non-formal education for affected children after the blast. Longitudinal fieldwork consisting of digital and face-to-face in-depth interviews, visual materials and focus group discussions have been conducted. This paper describes how psychosocial support implemented by counsellors can provide a safe place for children in light of the aftermath of the Beirut blast and the ongoing crises in Lebanon. The supporting factors include a physically safe space, tools provided to the children to reduce their stress levels and increase their well-being, and a professional team providing a child-friendly and respectful place."
BUILDING ACADEMIC INTEGRITY THROUGH ONLINE ASSESSMENT APPS
Authors: du Plessis Elize , van der Westhuizen Gert
Published: July 2022

"The Covid-19 pandemic of the last two years is having an immense effect on teaching and learning in higher education. The rapid shift to online assignments and examinations in response to the pandemic and the consequent lockdown forced higher education institutions to become innovative with regard to online assessment. Furthermore, academic integrity during online examinations is a crucial concern since it affects the quality and trustworthiness of examination systems in higher education. In our experiences and according to course reports by lecturers at the largest distance education university in South Africa (Unisa), students handled online assessment in varied ways, which ranged from honesty to students being guilty of copy-and-paste and students assisting other students or phoning somebody for assistance. The two main research questions were: what is involved in academically dishonest behaviours in online courses, and can digital technologies such as online invigilator applications contribute towards academic integrity? The purpose of this exploratory case study was to analyse the types of challenges experienced by Baccalaureus Educationis (BEd) and Postgraduate Certificate in Education (PGCE) students during fully online examinations. We want to propose guidelines for instructors and administrators in their decision-making process regarding online evaluations and encourage future studies that will form the foundation of evidence-based practices. The study further focused on a new app referred to as the Invigilator Application (IA). This app was compulsory for students to use during their online assessment, and our interest is to discover how the IA may contribute towards academic integrity. The findings are reported in terms of the cheating behaviour that occur in different components of course assessments and are discussed in terms of personal motivation theory and broader social and community pressures."