Internet Addiction in the Web of Science Database: A Review of the Literature with Scientific Mapping

To the researchers of the research group Análisis de la Realidad Educativa (AREA) (HUM-672). Research group by belonging to the Ministry of Education and Science of the Junta de Andalucía and based in the Department of Didactics and School Organization of the Faculty of Education Sciences of the University of Granada.Information and communication technologies (ICT) is a major element of today’s society with great potential that can offer both advantages and disadvantages. Addiction to the Internet and social networks is a growing problem in all age groups. Education is the context in which to work and train in the correct use of these media. The objective of the study focuses on knowing the scientific production and the performance of the concepts “addiction” and “internet” (ADIN). A bibliometric methodology complemented with the scientific mapping technique was followed. Different processes related to the quantification, analysis, evaluation, and estimation of scientific documents were carried out. The literature was analyzed by specific programs such as SciMAT, Analyze Results, and Creation Citation Report. The unit of analysis was specified in 5644 scientific publications extracted from Web of Science (WoS), belonging to the period of years between 1996 and 2019. The results showed that the evolution in the study of the addiction to the Internet is constant and continuous, with articles in English being the most used means to present the information on the part of the investigators. In addition, the subject of study was based on time, given that the coincidence of key words between the periods analyzed was high. In conclusion, the importance of promoting healthy living habits that include responsible use of the Internet are discussed.Ministry of Education and Vocational Training of the Government of Spain (project reference: FPU18/01595)

Educational Innovation in Higher Education: Use of Role Playing and Educational Video in Future Teachers’ Training

Information and communication technologies (ICTs) have led to the emergence of a variety of active and innovative teaching methods. This is the case in role-playing, which consists of simulating a real-life situation, in this case the school context, in which the student takes on a certain role and interacts with other students in a fictitious situation. Framed in this way, the present study aims to show if the application of the role-playing method promotes the improvement of attitude variables and practical skills. To this end, we advocated the use of a quasi-experimental methodology, with a control and experimental group and the application of a post-test. The sample is composed of 138 students from the Master of Teachers of Compulsory Secondary Education in Ceuta (Spain). The results showed that the students positively valued the application of the method, obtaining better scores in the set of variables studied, especially in motivation, creativity and collaboration. Therefore, it continues to be observed that the application of innovative methodologies through technology promotes the increase of multiple skills in the student body. This study aimed to prove that the use of active methods provides an increase in students’ skills, and that, therefore, we must bet on the use of sustainable pedagogies in order to promote a real innovation in the classrooms.This study is financed by the Teaching Training and Information Plan of the University of Granada. FIDOugr Plan 2018-2020, in the program of Innovation and Good Teaching Practices. Code: 19-43

Monitoreo de una planta tratadora de aguas residuales mediante pruebas de toxicidad aguda con el cladócero Daphnia magna y el rotífero de agua dulce Lecane quadridentata

Background. Monitoring of physicochemical parameters and acute toxicity tests allow us to measure water quality of the influent and effluent of wastewater treatment plants in accordance with the parameters established by the NOM-003-SEMARNAT-1997. Goals. We measured water quality of the influent and effluent of the wastewater treatment plant of the Autonomous University of Aguascalientes during 2007-2008. Methods. Every 15 days physicochemical parameters were taken and acute toxicity tests were conducted with the cladoceran Daphnia magna and the rotifer Lecane quadridentata. Results. The influent showed median lethal concentration to be between 25.71 and 3.88 toxic units with L. quadridentata, while with D. magna the median lethal concentration was between 31.51 and 3.17 toxic units. The effluent showed median lethal concentration to be between 60.71 and 1.64 toxic units with L. quadridentata, whereas the D. magna showed no toxicity. Conclusions. We concluded that the wastewater treatment plant of the Autonomous University of Aguascalientes in 2007-2008 fulfilled Mexico´s water quality criteria after treatment.Antecedentes. Los parámetros fisicoquímicos y pruebas de toxicidad aguda sirven para valorar las condiciones del agua de los efluentes de las plantas de tratamiento de aguas residuales de acuerdo con la normativa de la NOM-003-SEMARNAT-1997. Objetivos. Conocer la calidad del agua del influente y efluente de la planta tratadora de aguas residuales de la Universidad Autónoma de Aguascalientes durante el ciclo anual 2007-2008, fue el objetivo principal de esta investigación. Métodos. Se midieron los parámetros físico-químicos, también se realizaron pruebas de toxicidad aguda con el cladócero Daphnia magna y el rotífero Lecane quadridentata, quincenalmente. Resultados. Los valores de concentración letal media en el influente fueron de 25.71 y 3.88 unidades de toxicidad para L. quadridentata, mientras que para D. magna fueron de 31.51 y 3.17 unidades de toxicidad. El efluente mostró valores de concentración letal media de 60.71 y 1.64 unidades de toxicidad con L. quadridentata y para D. magna no se presentó toxicidad. Conclusiones. La planta tratadora de aguas residuales de la Universidad Autónoma de Aguascalientes durante el periodo 2007-2008 cumplió con los parámetros mexicanos de calidad de salud del agua después de su tratamiento

Adiciones a la taxonomía de Brachionus josefinae (Rotifera: Monogononta: Brachionidae)

In the state of Aguascalientes, Mexico, we found a rotifer of the genus Brachionus, B. josefinae, belonging to urceolaris group. This endemic rotifer, has not yet been reported in any other region of Mexico or the America. For the first time since it was described, morphological features are displayed with images showing the ultrastructure of the habitus and the trophi, using scanning electron microscopyEn el estado de Aguascalientes, México, se encontró un rotífero del género Brachionus, B. josefinae, perteneciente al grupo urceolaris. Este rotífero endémico, aún no ha sido reportado en alguna otra región de México o del continente Americano. Por primera vez desde que fue descrito, se presenta nueva información sobre su morfología mediante imágenes que muestran la ultraestructura del hábito y del trofi, utilizando microscopía electrónica de barrido

Ultrastructural and Morphological Description of the Three Major Groups of Freshwater Zooplankton (Rotifera, Cladocera, and Copepoda) from the State of Aguascalientes, Mexico

An ultrastructural and morphological description of the three major groups of freshwater zooplankton (Rotifera, Cladocera, and Copepoda) from the state of Aguascalientes using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) was performed. The main characteristics used for identification keys for each group were particularly investigated and also the cellular morphology of rods and spermatozoids in males of the rotifer Brachionus bidentatus has also been investigated. It is noteworthy to mention that in the state of Aguascalientes, three endemic species of rotifers new to science have been described: Keratella mexicana, Brachionus araceliae, and Brachionus josefinae. Regarding the suborder Cladocera, the analysis of the first and second pair of antenna, rostrum, cephalic pores, postabdomen, and the five pairs of swimming legs has resulted in the description of seven species new to science from the state of Aguascalientes: four species of Macrothrix, two species of Alona, and one species of Karualona. Regarding the subclass Copepoda, four species of Cyclopoida group new to science have been described from Aguascalientes. The taxonomical description of these species included the morphological analysis of the buccal parts and the five pairs of swimming legs with emphasis on the fifth pair of legs. The ultrastructural and morphological analysis of each characteristic has been an exhaustive task. The use of SEM and TEM was crucial to identify all these new species. SEM has allowed focusing in the study of new micro-details that have been used for taxonomical clarity, while TEM allows for studies of cellular composition and the physiological functioning of these zooplankton species. The state of Aguascalientes inventory today comprehends more than 100 rotifer species and about 50 cladoceran and 30 copepod species (of which 14 were new to science in all three groups), leading us to believe that the number of species for this inventory could be increased, adding new species to science, in the process

The impact of term fake news on the scientific community. Scientific performance and mapping in web of science

Nowadays, multiple phenomena have promoted an impact on society, constituting in some cases, not only a contribution of benefits but also of risks. Among them, the fake news phenomenon is considered one of the most burning phenomena today due to the risk it poses to society. In view of this situation, the research community has carried out numerous studies that seek to address this issue from a multidisciplinary perspective. Based on this, the objective of this work was to analyze the productivity and, therefore, the impact of this topic in the research community. To this end, this work advocated a scientometric-type methodology, through scientometric laws, impact indicators, and scientific evolution of 640 publications of the web of science (WOS). The results showed the impact of the fake news discipline today, which is considered an emerging issue that is of interest to many knowledge disciplines around the world. Likewise, the results showed that the publications not only have a focus on analyzing the veracity or not of the news, but that it begins to vertebrate a new line of an investigation directed to the informational education and towards the prevention of the consumption of this type of news through the internet.Ministry of Education, Culture and Sport of the Government of Spain (Project reference: FPU17/05952

Brachionus paranguensis sp. nov. (Rotifera, Monogononta), a member of the L group of the Brachionus plicatilis complex

This article is in memory of Gloria and Balthazar, the first author’s aunt and uncle. Authors appreciate the discussions with Paul Hebert, Teresa Crease and Sean Prosser from the University of Guelph to understand concerted evolution and discordance between ITS1 and COI genes.The Brachionus plicatilis complex represents the most studied group of rotifers, although the systematics of the species complex has not been completely clarified. Many studies have been conducted trying to explore the diversity within the complex, leading to the recognition of three major morphotypes: large (L), small-medium (SM), and small (SS). Currently six species have been described and classified under these types and another nine taxa have been identified but not formally described. Within the L group, three species have been officially described [B. plicatilis s.s. (L1), B. manjavacas (L2), and B. asplanchnoidis (L3)], while a formal description of L4, unofficially known as B. ‘Nevada’, is still lacking. In the present study, a new species, Brachionus paranguensis sp. nov., is formally described and presented as a representative of the L4 clade. The species has been named after a high altitude saline crater lake from Central Mexico, where the specimens were collected. An integrated approach using DNA taxonomy through COI and ITS1 markers, morphology, and ecology was used to confirm the identity of the new species.This work is a contribution of the Mexican Barcode of Life Network (MEXBOL) supported by CONACYT (251085

Warming and CO2 effects under oligotrophication on temperate phytoplankton 2 communities

Eutrophication, global warming, and rising carbon dioxide (CO2) levels are the three most prevalent pressures impacting the biosphere. Despite their individual effects are well-known, it remains untested how oligotrophication (i.e. nutrients reduction) can alter the planktonic community responses to warming and elevated CO2 levels. Here, we performed an indoor mesocosm experiment to investigate the warming×CO2 interaction under a nutrient reduction scenario (40%) mediated by an in-lake management strategy (i.e. addition of a commercial solid-phase phosphorus sorbent - Phoslock®) on a natural freshwater plankton community. Biomass production increased under warming×CO2 relative to present-day conditions; however, a Phoslock® -mediated oligotrophication reduced such values by 30-70%. Conversely, the warming×CO2×oligotrophication interaction stimulated the photosynthesis by 20% compared to ambient nutrient conditions, and matched with higher resource use efficiency (RUE) and nutrient demand. Surprisingly, at a group level, we found that the multi-stressors scenario increased the photosynthesis in eukaryotes by 25%, but greatly impaired in cyanobacteria (ca. -25%). This higher cyanobacterial sensitivity was coupled with a reduced light harvesting efficiency and compensation point. Since Phoslock® -induced oligotrophication unmasked a strong negative warming×CO2 effect on cyanobacteria, it becomes crucial to understand how the interplay between climate change and nutrient abatement actions may alter the, ecosystems functioning. With an integrative understanding of these processes, policy makers will design more appropriate management strategies to improve the ecological status of aquatic ecosystems without compromising their ecological attributes and functioning

Warming and CO2 effects under oligotrophication on temperate phytoplankton 2 communities

Eutrophication, global warming, and rising carbon dioxide (CO2) levels are the three most prevalent pressures impacting the biosphere. Despite their individual effects are well-known, it remains untested how oligotrophication (i.e. nutrients reduction) can alter the planktonic community responses to warming and elevated CO2 levels. Here, we performed an indoor mesocosm experiment to investigate the warming×CO2 interaction under a nutrient reduction scenario (40%) mediated by an in-lake management strategy (i.e. addition of a commercial solid-phase phosphorus sorbent - Phoslock®) on a natural freshwater plankton community. Biomass production increased under warming×CO2 relative to present-day conditions; however, a Phoslock® -mediated oligotrophication reduced such values by 30-70%. Conversely, the warming×CO2×oligotrophication interaction stimulated the photosynthesis by 20% compared to ambient nutrient conditions, and matched with higher resource use efficiency (RUE) and nutrient demand. Surprisingly, at a group level, we found that the multi-stressors scenario increased the photosynthesis in eukaryotes by 25%, but greatly impaired in cyanobacteria (ca. -25%). This higher cyanobacterial sensitivity was coupled with a reduced light harvesting efficiency and compensation point. Since Phoslock® -induced oligotrophication unmasked a strong negative warming×CO2 effect on cyanobacteria, it becomes crucial to understand how the interplay between climate change and nutrient abatement actions may alter the, ecosystems functioning. With an integrative understanding of these processes, policy makers will design more appropriate management strategies to improve the ecological status of aquatic ecosystems without compromising their ecological attributes and functioning

Design and implementation of an observer-based soft sensor for a heat exchanger

The objective of this work is to describe step-by-step how to implement an observer-based soft sensor in order to estimate process variables for which a hardware sensor is not available. The design and implementation procedure is illustrated by applying it to a counter-flow double-pipe heat exchanger. The approach used to design the nonlinear observer is based on a simplified mathematical model of the process. Numerical simulations and experiments were performed in a bench-scale pilot plant in order to validate the proposed scheme