bluuebunny/crossref_metadata_2025_split huggingface dataset:
Percepción de las emociones y su atribución en la formación del docente de Educación Física
Authors: Mujica Johnson Felipe Nicolás 
Published: April 2019

Las emociones históricamente no han sido reconocidas por su importancia en el sistema educativo chileno, sino más bien han sido ignoradas en los procesos de aprendizajes. Con el propósito de reivindicar esta situación, el propósito del estudio, es identificar la percepción y atribución emocional de los estudiantes de Pedagogía en Educación Física, en el taller integrado de formación en la práctica 1. El estudio responde al enfoque cualitativo y sus participantes son 19 estudiantes de la cohorte 2016. Los datos fueron recopilados por medio de la técnica del diario personal, grupos focales y entrevistas individuales no estandarizadas, que dieron paso al análisis de los datos, por medio de la teoría fundamentada. Los resultados indican que el alumnado percibe emociones positivas y negativas, las cuales son atribuidas a cuatro principales categorías. La primera de ellas está referida a las acciones del docente, la segunda a las acciones del estudiante, la tercera a los imaginarios del estudiante y la última a sucesos externos a la clase. Se concluye que una labor pedagógica con interacciones comprensivas, alegres y una metodología basada en el enfoque constructivista, en donde el alumnado cumple un rol activo en su aprendizaje, genera una percepción de emociones positivas.
Historically the Chilean educational system has not recognized the importance of emotions; on the contrary they have been ignored in learning processes. In order to denounce this situation, the purpose of this study is to identify emotional perceptions and attributions in students of Pedagogy in Physical Education during their first Practicum placement. The study follows a qualitative approach and the participants are 19 students of year 2016. Data were collected through journal writing, focus groups and non-standardized individual interviews, which gave way to the analysis of the data, through grounded theory. The results indicate that students perceived positive and negative emotions which can be classified within four main categories. The first refers to teachers’ actions, the second to student's actions, the third to students’ imaginaries and the last category to events which are external to the class. It is concluded that pedagogical work which fosters comprehensive and cheerful interactions and a methodology based on constructivist approaches, where students play an active role in their learning, creates perceptions of positive emotions.
Creencias de los estudiantes de educación secundaria sobre la naturaleza de la ciencia y los modelos científicos: un estudio transversal
Authors: Pardo Marín Olga , Solaz-Portolés Joan Josep , Sanjosé López Vicente 
Published: April 2019

En este trabajo se lleva a cabo un estudio exploratorio de las creencias de los estudiantes de secundaria de distintos niveles académicos sobre la construcción y naturaleza de la ciencia y de los modelos científicos. Se cumplimentó un cuestionario cuyos ítems están vinculados tanto a la naturaleza, elaboración y validación del conocimiento científico, como a la naturaleza, función, formulación y validación de los modelos científicos. Participaron 216 estudiantes de ESO y Bachillerato (entre 12 y 18 años). De las puntuaciones medias obtenidas por los estudiantes y del ANOVA efectuado puede concluirse que: a) los conocimientos sobre la construcción y naturaleza de la ciencia y de los modelos científicos no son los más adecuados epistemológicamente y no se alteran con la formación académica; b) las ideas sobre modelos científicos son significativamente mejores que en el caso de la construcción del conocimiento científico, independientemente del curso que se trate; y c) sobrevaloran la observación y la experimentación en los procesos de construcción del conocimiento científico.
This exploratory study examines the beliefs of secondary school students at different academic levels regarding the construction and nature of scientific knowledge and scientific models. To this end, a questionnaire was administered to 151 secondary school students in grades 8-12 (ages 12-18). Items included in the questionnaire relate both to nature, elaboration and validation of scientific knowledge and to nature, role, formulation and validation of scientific models. Based on the scores obtained by students and the analyses of variance undertaken, it can be concluded that: a) students' knowledge about the nature of science and scientific models is not epistemologically appropriate and does not improve the higher academic level is; b) students' ideas about scientific models are significantly better than ideas about the construction of scientific knowledge, regardless of academic level; and c) students tend to overvalue the role of observation and experimentation in the processes of scientific knowledge construction.
Trayectorias de empleabilidad de los jóvenes que abandonan el sistema de protección
Authors: Alonso Bello Estefanía , Santana Vega Lidia E. , Feliciano García Luis 
Published: April 2019

Las trayectorias de empleabilidad de los jóvenes que salen del sistema de protección se ven condicionadas por su situación de exclusión social. Nuestra investigación persigue: a) analizar las trayectorias de los jóvenes extutelados y b) examinar cómo sus experiencias vitales y laborales influyen en su situación de exclusión. Se realizó un estudio de casos múltiples con cuatro jóvenes inmigrantes y tres nacionales. La selección de los casos tuvo en cuenta: a) haber estado acogido al sistema de protección, b) haber pasado un mínimo de 6 meses en un programa de inserción laboral, c) haber transcurrido 6 años después de finalizar el proyecto de inserción. En el estudio se utilizaron entrevistas, planes de inserción, fichas de trabajo, diarios de campo y registros de control para triangular la información y dar credibilidad a los resultados. Los resultados señalan que: 1) Los jóvenes valoran positivamente el apoyo en el proceso de transición al mercado laboral; b) la inserción social y la salida de la situación de exclusión son más factibles con metas claras y un proyecto de vida definido; 3) la escasa formación y experiencia laboral obstaculizan la adquisición y consolidación de competencias de empleabilidad. Los programas de inserción sociolaboral deben fomentar: a) el análisis de los proyectos de vida, b) la ampliación de las redes de apoyo, y c) el diseño de planes de empleo con apoyo.
Employability trajectories of young people leaving protection systems are conditioned by their situation of social exclusion. The objectives of this study are: a) to analyse the trajectories of young people leaving public protection systems and b) to analyse how their lives and work experiences affect their social exclusion. A multiple case study was conducted. Four young immigrants and three young nationals participated in the study. The participants were selected on the basis of three criteria: a) they should have lived in residential care institutions, b) they should have been in a job placement program for at least 6 months, c) 6 years should have passed since the end of their job placement program. The data were collected using interviews, insertion plans, worksheets, field notes, control records; this allowed the triangulation of the information and gave the results credibility. The results indicate that: 1) young people value positively the support provided in the transition to the labour market; 2) social inclusion and leaving a situation of exclusion are more feasible with clear goals and a well defined life project; 3) poor training and work experience hinder the acquisition and consolidation of employability skills. Labour integration programs should promote: a) the analysis of life projects, b) the expansion of support networks and c) the design of supported employment plans.
EFIKASNOST ŠTAMPANIH OGLASA KODIRANIH GASTRONOMSKOM IKONOM
Authors: Nedeljković Uroš , Puškarević Irma 
Published: April 2019

Razumevanje prirode procesa kroz koji oglašavanje ili drugi oblici marketinške ko­munikacije utiču na ponašanje potrošača je dugogodišnja oblast istraživanja među marketinškim stručnjacima. Ispitivanje uticaja emocionalne komponente stava na efektivnost oglašavanja u ovom radu se nadovezuje na prethodno istraživanje (Nedeljković, Pinćjer i Vladić, 2011). Cilj ovog istraživanja jeste da se prikaže na koji način sadržaj oglasa, tj. kodiranje poruka u štampanim oglasima, utiče na emocionalni odgovor. Ali za razliku od prethodnog istraživanja, ovo istraživanje osim emocionalnog odgovora proučava i vreme kašnjenja odgovora ispitanika. Korišćenjem ikoničkog i tropološkog sadržaja u oglasima za uslugu i proizvode hrane i pića, namera je da se utvrdi koji od pomenutih sadržaja izaziva bolje emocionalne reakcije, odnosno, koja vrsta oglasa, konvencionalni ili nekonvencionalni, je efektivnija. Putem eksperimenta, korišćenjem SAM vizuelne metode za samoocenjivanje, vršena su merenja emocionalnog odgovora i vremena kašnjenja odgovora ispitanika za oglase koji prezentuju uslugu ili proizvod hrane i pića, kako bi se utvrdilo kako sadržaj oglasa utiče na emocionalne reakcije ispitanika, a samim tim i na uspeh reklamne kampanje. Rezultati istraživanja upotpunjuju rezultate prethodnog istraživanja i donose nove zaključke koji ostavljaju prostora za dalje istraživanje u ovoj oblasti.
ODABIR ORGANSKOG RASTVARAČA KAO TEČNE MEMBRANE TOKOM TRANSPORTA METALNIH KATIONA
Authors: Suljkanović Mersiha , Nikolić Željka , Nurković Edita 
Published: April 2019

Metode određivanja sadržaja teških metala u prirodnim resursima kao i u industrijskim proizvodima, oduvijek su bile predmet brojnih naučnih istraživanja. Metode određivanja metalnih kationa uglavnom su bazirane na principu ″molekulskog raspoznavanja″, koje se zasniva na kompleksiranju metalnih kationa pogodnim ligandima. Efikasnost kompleksiranja uslovljena je kompatibilnošću kationa i liganda, ali i samim okolnostima, tj. medijem u kojem se odvija kompleksiranje.Jedna od tehnika koja se može primijeniti za uspješno razdvajanje i koncentriranje metalnih kationa je transportovanje kroz tečne organske membrane. Proces transporta obuhvata: ekstrakciju, difuziju i povratnu ekstrakciju metalnog kationa. Veća efikasnost kompleksiranja, (veća stabilnost kompleksa) ne mora značiti i efikasniji transport. Veoma značajan je izbor rastvarača kao membrane.U ovom radu su istražene metal-ligand interakcije, sa aspekta vrste rastvarača u kojem se odvijaju. Primjenjene su spektrometrijske (UV/VIS i AAS) tehnike, a istraživanja izvršena na ″model-sistemima″ sastavljenim od: dvovalentnih metalnih kationa (Cd, Pb), liganada (18-kruna-6, dibenzo-18-kruna-6, TritonX-100), kontra-iona (pikratni ion), te stripping agenasa (tiosulfat). Korišteni su organski rastvarači: dihlormetan, 1,2-dihloretan, hloroform i nitrobenzen. Rezultati su pokazali da među primjenjenim rastvaračima, najveću efikasnost u ulozi tečne membrane ima dihlormetan, kako za sve ispitane metalne katione, tako i za sve primjenjene ligande. Pokazano je da fizičke osobine rastvarača određuju njegovu efikasnost, tako da dihlormetan sa vrijednošću dielektrične konstante (ε = 8.93) nižom od ostalih, kao i manjom viskoznošću (0.4) ima prednost pri izboru kod pripreme tečne membrane za transport ispitanih metalnih kationa.
POREĐENJE KINETIKE PRENOSA MASE ISTO-STRUJNOG I PROTIV-STRUNOG PROCESA OSMOTSKE DEHIDRATACIJE SVINJSKOG MESA
Authors: Lončar Biljana , Filipović Vladimir , Nićetin Milica , Knežević Violeta , Pezo Lato , Ačansk Marijana 
Published: April 2019

Postupak osmotske dehidratacije se sastoji od potapanja biološkog materijala, sa određenim sadržajem vode, u koncentrovane vodene rastvore koji sadrže osmotske agense (osmotski rastvor), pri čemu dolazi do prenosa dela mase vode iz ćelijskog materijala u osmotski rastvor. Jedna od mogućnosti povećanja efikasnosti procesa osmotske dehidratacije je primena protivstrujnog procesa. Praćenje kinetike prenosa mase može da se koristi za procenu efikasnosti procesa osmotske dehidratacije, a primena protivstrujog procesa u osmotskoj dehidrataciji značajno povećava kinetiku prenosa mase u procesu, što dovodi do povećanja sveukupne efikasnost procesa osmotske dehidratacije.Cilj istraživanja je uporedna analiza kinetike prenosa mase u isto-strujnom i protiv-strujnom procesu osmotske dehidratacije svinjskog mesa u tri različita osmotska rastvora.Vreme trajanja procesa i priroda primenjenog osmotskog rastvora su statistički značajno uticali na gubitak vode, prirast suve materije i smanjenje mase u oba tipa procesa.Vrednosti parametara brzine gubitka vode i brzine smanjenja mase u svakom satu procesa i u oba tipa procesa, bile su najviše za R3, zatim za R2, a najmanje vrednosti za R1, dok je za brzinu prirasta suve materije zavisnost obrnuta.Sa protokom vremena trajanja procesa dolazi do većeg razblaženja osmotskih rastvora u istrostrujnim procesima, bržeg pada vrednosti brzine gubitka vode i brzine smanjenja mase i manjeg pada istih vrednosti u protivstrujnim procesima za sva tri osmotska rastvora, tako da do kraja petog sata sve vrednosti brzine smanjenja mase u protivstrujnim procesima su veće od odgovarajućih vrednosti u istrostrujnim procesima.
Molecular characterization and phylogenetic analysis of a Squash leaf curl virus isolate from Baja California Sur, Mexico
Authors: Medina-Hernández Diana , Caamal-Chan M. Goretty , Vargas-Salinas Mayela , Loera-Muro Abraham , Barraza Aarón , Holguín-Peña Ramón Jaime 
Published: April 2019

Background
The begomovirus, squash leaf curl virus (SLCuV) is one of the causal agents of squash leaf curl (SLC) disease, which is among the most destructive diseases of cucurbit crops in tropical, subtropical, and semiarid regions worldwide. This disease was originally reported in the American continent with subsequent spread to the Mediterranean basin. Up to now, SLCuV has only been detected by PCR in Mexico. This study provides the first complete sequence of a Mexican SLCuV isolate from Baja California Sur (BCS). In addition, the genome of the virus was characterized, establishing its phylogenetic relationship with other SLCuV isolates.

Methods
The full genome (DNA-A and DNA-B) was amplified by rolling circle amplification, cloned and sequenced and the open reading frames (ORF) were annotated. Virus identification was performed according to the International Committee on Taxonomy of Viruses (ICTV) criteria for begomovirus species demarcation. To infer evolutionary relationship with other SLCuV isolates, phylogenetic and recombination analyses were performed.

Results
The SLCuV-[MX-BCS-La Paz-16] genome (DNA-A and DNA-B) had 99% identity with SLCuV reference genomes. The phylogenetic analysis showed that SLCuV-[MX-BCS-La Paz-16] is closely related to SLCuV isolates from the Middle East (Egypt, Israel, Palestine and Lebanon). No evidence of interspecific recombination was determined and iterons were 100% identical in all isolates in the SLCuV clade.

Conclusions
SLCuV-[MX-BCS-La Paz-16] showed low genetic variability in its genome, which could be due to a local adaptation process (isolate environment), suggesting that SLCuV isolates from the Middle East could have derived from the southwestern United States of America (USA) and northwestern Mexico.
Ageing Induced Hyperproduction of Reactive Oxygen Species and Dysbalance in Enzymatic Link of Antioxidant Defense System of Skin and Therapeutic Efficacy of Artichoke Extract
Authors: Sukoyan Galina V. , Gongadze Nikoloz V. , Demina Natalya B. , Golovach Veronika V. , Tsivtsivadze Edisher T. , Bakuridze Alesha D. 
Published: April 2019

Skin aging is multitarget persistence processing that immediately involve hyperproduction of free radicals under influence of intrinsic and extrinsic factors and deterioration in intimal antioxidant defense system. The goal of the study was the evaluation of the anti-oxidant potential of artichoke standartizated extracts, 2%, as a protective strategy against skin age-associated oxidative damage caused by D-galactose (D-gal) in rats. 58 female Wistar rats included in the experimental design. D-gal-induced aging was reproduced in 36 animals of main group, and 12 rats included in control group. All animals in main group were randomized for 3 groups: I – animals with skin aging reproduced model receive saline, II – animals with skin aging rats receive artichoke extracts (with content of chloroagenic acid 2.0%) in a dose of intradermal injection 0.13 mg/kg and main III group - animals with skin aging receive 1.3 mg/kg artichoke extract twice at weeks during 4 weeks. Influence of artichoke extracts restores skin relative weight and leads to decreasing the rate of generation of superoxide anion, hydrogen peroxide and lipid peroxidation (LPx), increasing activity of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and reverse ratio SOD/(catalase+GPx) to the production of H2O2 from superoxide dismutation coupling with the decrease ratio of generated O2-/H2O2. Low-dose of intradermally microinjection of artichoke extracts, 2%, activated the enzymatic link in innate antioxidant defense system in D-gal-induced skin aging model and could be recommended for applications in cosmetics as antiaging mesotherapy.
How generative drawing affects the learning process: An eye‐tracking analysis
Authors: Hellenbrand Johannes , Mayer Richard E. , Opfermann Maria , Schmeck Annett , Leutner Detlev 
Published: April 2019

SummaryGenerative drawing is a learning strategy in which students draw illustrations while reading a text to depict the content of the lesson. In two experiments, students were asked to generate drawings as they read a scientific text or read the same text on influenza with author‐provided illustrations (Experiment 1) or to generate drawings or write verbal summaries as they read (Experiment 2). An examination of students' eye movements during learning showed that students who engaged in generative drawing displayed more rereadings of words, higher proportion of fixations on the important words, higher rate of transitions between words and workspace, and higher proportion of transitions between important words and workspace than students given a text lesson with author‐generated illustrations (Experiment 1) or students who were asked to write a summary (Experiment 2). These findings contribute new evidence to guide theories for explaining how generative drawing affects learning processes.
Association of Comorbid Interphalangeal Joint Pain and Erosive Osteoarthritis With Worse Hand Function in Individuals With Symptomatic Thumb Base Osteoarthritis
Authors: Deveza Leticia A. , Robbins Sarah R. , Duong Vicky , Wajon Anne , Riordan Edward A. , Fu Kai , Jongs Ray , Oo Win Min , Hunter David J. 
Published: April 2019

ObjectiveHand osteoarthritis (OA) trials often target exclusively the thumb base joint, although concomitant widespread interphalangeal (IP) joint involvement is frequent. We aimed to compare hand strength and function between individuals with isolated thumb base OA and those with coexistent IP joint pain and erosive OA.MethodsBaseline data from a thumb base OA trial were analyzed (n = 204). Participants were age ≥40 years with symptomatic and radiographic thumb base OA. Only the index hand was included. Self‐reported IP joint pain (in any proximal, distal, or thumb IP joint), hand function score (Functional Index for Hand Osteoarthritis questionnaire [range 0–30]), and hand grip and tip‐pinch strength test results were obtained at baseline. Radiographs were scored for OA severity at each joint (Kellgren/Lawrence grade) and for the presence of erosive OA at the thumb base or IP joints. Multiple linear regression was used adjusting for age, sex, body mass index, and radiographic thumb base OA severity.ResultsCompared to individuals with isolated thumb base OA (62%), those with concomitant IP joint pain (17%) and erosive OA (21%) had significantly worse hand function (β = 1.82 [95% confidence interval (95% CI) 0.36, 3.28] and β = 1.47 [95% CI 0.74, 2.88], respectively). In addition, coexistence of erosive OA was independently associated with lower grip and tip‐pinch strength (β = –5.14 [95% CI –7.58, –2.70] and β = –0.61 [95% CI –1.05, –0.17], respectively).ConclusionConcomitant IP joint pain and erosive OA are associated with worse hand function in individuals with thumb base OA. Patient stratification based on these characteristics may improve the design of future thumb base OA trials.
Regulation of inflammation during gestation and birth outcomes: Inflammatory cytokine balance predicts birth weight and length
Authors: Ragsdale Haley B. , Kuzawa Christopher W. , Borja Judith B. , Avila Josephine L. , McDade Thomas W. 
Published: April 2019

AbstractObjectivesThe maternal environment during gestation influences offspring health at birth and throughout the life course. Recent research has demonstrated that endogenous immune processes such as dysregulated inflammation adversely impact birth outcomes, increasing the risk for preterm birth and restricted fetal growth. Prior analyses examining this association suggest a relationship between maternal C‐reactive protein (CRP), a summary measure of inflammation, and offspring anthropometric outcomes. This study investigates pro‐ and anti‐inflammatory cytokines, and their ratio, to gain deeper insight into the regulation of inflammation during pregnancy.MethodsIL6, IL10, TNFɑ, and CRP were quantified in dried blood spots collected in the early third trimester (mean = 29.9 weeks) of 407 pregnancies in Metropolitan Cebu, Philippines. Relationships between these immune markers and offspring anthropometrics (birth weight, length, head circumference, and sum of skinfold thicknesses) were evaluated using multivariate regression analyses. Ratios of pro‐ to anti‐inflammatory cytokines were generated.ResultsHigher maternal IL6 relative to IL10 was associated with reduced offspring weight and length at birth. Individual cytokines did not predict birth outcomes.ConclusionsConsistent with the idea that the relative balance of cytokines with pro‐ and anti‐inflammatory effects is a key regulator of inflammation in pregnancy, the IL6:IL10 ratio, but neither cytokine on its own, predicted offspring birth outcomes. Our findings suggest that prior reports of association between CRP and fetal growth may reflect, in part, the balance between pro‐ and anti‐inflammatory cytokines, and that the gestational environment is significantly shaped by cytokine imbalance.