bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estudio sobre la comunicación de las familias migrantes con el centro escolar
Authors: Habib Allah Mohamed Chamseddine 
Published: March 2020

Es sobradamente conocido que la participación de las familias en la escuela nunca ha alcanzado las expectativas deseadas por la comunidad educativa, pero si hablamos de los progenitores migrantes nos confronta a una cuestión más compleja que la anterior. Por ello, el artículo persigue conocer el grado de participación y contribución de las familias migrantes, así como las actuaciones del profesorado, para fomentar el conocimiento e implicación de los padres en la vida escolar en los centros de educación infantil y primaria de atención preferente de la Región de Murcia. En tal sentido, se realizó una investigación cuantitativa no experimental de corte descriptivo e inferencial, empleando dos cuestionarios, en el que, han participado un total de 823 familias y 150 docentes. Los resultados arrojan niveles muy bajos de participación de los progenitores en el Consejo Escolar, y en la asociación de madres y padres (AMPA). No obstante, se detectan mejoras significativas en cuanto a una mayor contribución de los progenitores como supervisar y controlar las tareas escolares, apoyarles en la organización del tiempo de estudio e informarse sobre la asistencia regular de los hijos e hijas a clase.
It is well known that families’ participation at school has never reached the expectations desired by the educational community, but if we talk about migrant parents, we are confronted with a more complex issue than the previous one. For this reason, this article seeks to know participation and contribution degree of migrant families, as well as, teachers’ behaviour to promote parents’ knowledge and involvement at school life in early childhood and elementary schools of preferential attention in Región de Murcia. In this sense, a non-experimental quantitative research of a descriptive and inferential nature was carried out, using two questionnaires, in which a total of 823 families and 150 teachers participated. The results show very low levels of parental participation at School Council and AMPA (School Association of Parents). However significant improvements have been detected in terms of a greater contribution from parents, such as supervising and controlling schoolwork, supporting them in organizing study time, and informing about their children’s regular attendance at school.
Key Words:
Participation, contribution, communication, migrant families, faculty, school.
Methodology of social science research, the case of the sociology of action in relation to values
Authors: Lahmami Hind 
Published: March 2020

La investigación en las ciencias sociales sigue creciendo en el mundo académico, especialmente por parte de los estudiantes de Master y Doctorado a quienes se les pide redactar monografías y tesis que deban cumplir con los requisitos metodológicos. El propósito de este artículo es arrojar luz sobre la metodología de investigación en ciencias sociales, poner de relieve la investigación en sociología de la acción desde un enfoque psicosociológico y resaltar los obstáculos que dificultan su uso, especialmente cuando Se trata de valores. Por ello, se propone una explicación detallada de las etapas de investigación en las ciencias sociales, así como las dificultades relacionadas con la naturaleza del campo disciplinario sociológico para definir la posición objetiva que debe adoptar el investigador. Por lo tanto, se requiere distanciarse de los temas de estudio, especialmente cuando se trata de valores.
Social science research continues to grow in the academic world, especially for master's students and doctoral students who are called upon to produce dissertations and theses that meet the methodological requirement. The purpose of this article is to shed light on social science research methodology and on research in the sociology of action as a psychosociological approach and the obstacles that hinder its use, especially when it is about values. To this end, a detailed explanation of the stages of research in the social sciences as well as the difficulties related to the nature of the sociological disciplinary field are put forward, in order to define the objective posture that the researcher must adopt. Distancing from the subjects of study is therefore required especially when it comes to values.
Expansion of the genetic landscape of ERLIN2‐related disorders
Authors: Srivastava Siddharth , D’Amore Angelica , Cohen Julie S. , Swanson Lindsay C. , Ricca Ivana , Pini Antonella , Fatemi Ali , Ebrahimi‐Fakhari Darius , Santorelli Filippo M. 
Published: March 2020

AbstractERLIN2‐related disorders are rare conditions of the motor system and clinical details are limited to a small number of prior descriptions. We here presented clinical and genetic details in five individuals (four different families) where three subjects carried a common homozygous p.Asn292ArgfsX26, associated also with sensorineural hearing loss in one child. One further subject had a de novo p.Gln63Lys and one harbors the homozygous p.Val136Gly because of maternal isodisomy of chromosome 8. Overall, we expanded the clinical and genetic spectrum of ERLIN2‐related disorders and we reiterate that autosomal‐dominant transmission is a potential mode of inheritance. Future research will elucidate disease mechanisms.
Ultrahigh Discharge Efficiency and High Energy Density in Sandwich Structure K0.5Na0.5NbO3 Nanofibers/Poly(vinylidene fluoride) Composites
Authors: Lin Ying , Sun Chuang , Zhan Shili , Zhang Yongjing , Yuan Qibin 
Published: March 2020

AbstractThe high discharge energy density and excellent discharge efficiency are important indicators for measuring the performance of the capacitor. This work systematically studies the sandwich structure ceramic/polymer composites in which the original poly(vinylidene fluoride) (PVDF) is used as the outer layer, and the one‐dimensional K0.5Na0.5NbO3 nanofibers and PVDF composites are used as the intermediate layer. The experimental results show that the energy storage performance of the composite films can be effectively improved by rationally designing and optimizing the filler content. The finite element simulation verifies that the sandwich structure composites mainly reduce the electric field strength of the intermediate layer by adding ceramic fibers, which hinder the growth of the electric trees. In addition, reasonable filler content and optimized structural design can significantly reduce the electrical conductivity, thereby achieving excellent discharge efficiency. In the optimized sandwich structure composites, the high energy density of 14.2 J cm−3 and excellent discharge efficiency (η = 78.5%) are achieved when the breakdown strength is 420 MV m−1. This unique sandwich structure design and high aspect ratio achieve high discharge efficiency and energy storage density provide a reference for next‐generation dielectric materials.
Micro Organic Light Emitting Diode Arrays by Patterned Growth on Structured Polypyrrole
Authors: Li Jianping , Hu Yun , Liang Xianhu , Chen Jianmei , Zhong Liubiao , Liao Liangsheng , Jiang Lin , Fuchs Harald , Wang Wenchong , Wang Yandong , Chi Lifeng 
Published: March 2020

AbstractPatterning organic light emitting diodes (OLEDs) with several micrometers resolution is of importance in applications such as micro displays, virtual and augmented reality devices. Here a fabrication method of micro OLEDs is reported, using conducting polymer polypyrrole (PPy) as nucleation layer. The photolithographically patterned PPy films are used for patterned growth of hole transport layer to locally confine carrier injection. High‐resolution red, green, and blue micro OLED arrays are demonstrated. The green micro OLEDs with stacked structure of Al/Alq3/NPB/PPy/ITO exhibit a maximum current efficiency of 3.41 cd A−1, which is 80% in comparison to those devices on indium tin oxide glass.
Near‐Infrared Chemiluminescent Carbon Nanodots and Their Application in Reactive Oxygen Species Bioimaging
Authors: Shen Cheng‐Long , Lou Qing , Zang Jin‐Hao , Liu Kai‐Kai , Qu Song‐Nan , Dong Lin , Shan Chong‐Xin 
Published: March 2020

AbstractReactive oxygen species (ROS) are generated in the body and related to many pathophysiological processes. Hence, detection of ROS is indispensable in understanding, diagnosis, and treatment of many diseases. Here, near‐infrared (NIR) chemiluminescent (CL) carbon nanodots (CDs) are fabricated for the first time and their CL quantum yield can reach 9.98 × 10−3 einstein mol−1, which is the highest value ever reported for CDs until now. Nanointegration of NIR CDs and peroxalate (P‐CDs) through the bridging effect of amphiphilic triblock copolymer can serve as turn‐on probes for the detection and imaging of hydrogen peroxide (H2O2). Considering high efficiency and large penetration depth of NIR photons, the P‐CDs are employed in bioimaging H2O2 in vitro and in vivo, and the detection limit can reach 5 × 10−9 m, among the best reported of CDs‐based sensors. Moreover, imaging of inflammatory H2O2 in a mouse model of peritonitis is achieved by employing the P‐CDs as sensors. The results may provide a clue for the diagnosis and treatment of inflammation or cancers employing CL CDs as sensors.
Highly Efficient Oxygen Evolution by a Thermocatalytic Process Cascaded Electrocatalysis Over Sulfur‐Treated Fe‐Based Metal–Organic‐Frameworks
Authors: Feng Kun , Zhang Duo , Liu Fangfang , Li Hui , Xu Jiabin , Xia Yujian , Li Youyong , Lin Haiping , Wang Shuao , Shao Mingwang , Kang Zhenhui , Zhong Jun 
Published: March 2020

AbstractThe oxygen evolution reaction (OER) is a bottleneck process for water splitting and finding highly efficient, durable, low‐cost, and earth‐abundant electrocatalysts is still a major challenge. Here a sulfur‐treated Fe‐based metal–organic‐framework is reported as a promising electrocatalyst for the OER, which shows a low overpotential of 218 mV at the current density of 10 mA cm−2 and exhibits a very low Tafel slope of 36.2 mV dec−1 at room temperature. It can work on high current densities of 500 and 1000 mA cm−2 at low overpotentials of 298 and 330 mV, respectively, by keeping 97% of its initial activity after 100 h. Notably, it can achieve 1000 mA cm−2 at 296 mV with a good stability at 50 °C, fully fitting the requirements for large‐scale industrial water electrolysis. The high catalytic performance can be attributed to the thermocatalytic processes of H+ capture by –SO3 groups from *OH or *OOH species, which cascades to the electrocatalytic pathway and then significantly reduces the OER overpotentials.
Parallel evolution of arborescent carrots (Daucus) in Macaronesia
Authors: Frankiewicz Kamil E. , Oskolski Alexei , Banasiak Łukasz , Fernandes Francisco , Reduron Jean‐Pierre , Reyes‐Betancort Jorge‐Alfredo , Szczeparska Liliana , Alsarraf Mohammed , Baczyński Jakub , Spalik Krzysztof 
Published: March 2020

PremiseDespite intensive research, the pathways and driving forces behind the evolution of derived woodiness on oceanic islands remain obscure. The genus Daucus comprises mostly herbs (therophytes, hemicryptophytes) with few rosette treelets (chamaephytes) endemic to various Macaronesian archipelagos, suggesting their independent evolution. To elucidate the evolutionary pathways to derived woodiness, we examined phylogenetic relationships and the habit and secondary xylem evolution in Daucus and related taxa.MethodsSixty taxa were surveyed for molecular markers, life history, and habit traits. Twenty‐one species were considered for wood anatomical characters. A dated phylogeny was estimated using Bayesian methods. The evolution of selected traits was reconstructed using parsimony and maximum likelihood.ResultsDaucus dispersed independently to the Canary Islands (and subsequently to Madeira), Cape Verde, and the Azores in the late Miocene and Pleistocene. Life span, reproductive strategy, and life form were highly homoplastic; the ancestor of Daucus was probably a monocarpic, biennial hemicryptophyte. Rosette treelets evolved independently in the Canarian‐Madeiran lineage and in Cape Verde, the latter within the last 0.13 Myr. Treelets and hemicryptophytes did not differ in wood anatomy. Pervasive axial parenchyma in wood occurred more often in polycarpic rather than monocarpic species.ConclusionsLife span and life form in Daucus are evolutionarily labile and may change independently of wood anatomy, which is related to plant reproductive strategy rather than to life form. Insular woodiness may evolve rapidly (as demonstrated in D. bischoffii), and in Daucus, it does not seem to be an adaptation to lower the risk of xylem embolism.
A novel frameshift mutation in SOX10 causes Waardenburg syndrome with peripheral demyelinating neuropathy, visual impairment and the absence of Hirschsprung disease
Authors: Burke Elizabeth A. , Reichard Kyle E. , Wolfe Lynne A. , Brooks Brian P. , DiGiovanna John J. , Hadley Donald W. , Lehky Tanya J. , Gropman Andrea L. , Tifft Cynthia J. , Gahl William A. , Toro Camilo , Adams David 
Published: March 2020

AbstractWaardenburg syndrome (WS) is a group of genetic disorders associated with varying components of sensorineural hearing loss and abnormal pigmentation of the hair, skin, and eyes. There exist four different WS subtypes, each defined by the absence or presence of additional features. One of the genes associated with WS is SOX10, a key transcription factor for the development of neural crest‐derived lineages. Here we report a 12‐year‐old boy with a novel de novo SOX10 frameshift mutation and unique combination of clinical features including primary peripheral demyelinating neuropathy, hearing loss and visual impairment but absence of Hirschsprung disease and the typical pigmentary changes of hair or skin. This expands the spectrum of currently recognized phenotypes associated with WS and illustrates the phenotypic heterogeneity of SOX10‐associated WS.
Strong Squeezing of Duffing Oscillator in a Highly Dissipative Optomechanical Cavity System
Authors: Xiong Biao , Li Xun , Chao Shi‐Lei , Yang Zhen , Peng Rui , Zhou Ling 
Published: March 2020

AbstractIn the conventional scheme of generating strong mechanical squeezing by the joint effect between mechanical parametric amplification and sideband cooling, the resolved sideband condition is required so as to overcome the quantum backaction heating. In the unresolved sideband regime, to suppress the quantum backaction, a χ(2) nonlinear medium is introduced to the cavity. The result shows that the quantum backaction heating effect caused by unwanted counter‐rotating term can be completely removed. Hence, the strong mechanical squeezing can be obtained even for the system far from the resolved‐sideband regime.
β‐Sheet to Helical‐Sheet Evolution Induced by Topochemical Polymerization: Cross‐α‐Amyloid‐like Packing in a Pseudoprotein with Gly‐Phe‐Gly Repeats
Authors: Hema Kuntrapakam , Sureshan Kana M. 
Published: March 2020

AbstractProtein‐mimics are of great interest for their structure, stability, and properties. We are interested in the synthesis of protein‐mimics containing triazole linkages as peptide‐bond surrogate by topochemical azide‐alkyne cycloaddition (TAAC) polymerization of azide‐ and alkyne‐modified peptides. The rationally designed dipeptide N3‐CH2CO‐Phe‐NHCH2CCH (1) crystallized in a parallel β‐sheet arrangement and are head‐to‐tail aligned in a direction perpendicular to the β‐sheet‐direction. Upon heating, crystals of 1 underwent single‐crystal‐to‐single‐crystal polymerization forming a triazole‐linked pseudoprotein with Gly‐Phe‐Gly repeats. During TAAC polymerization, the pseudoprotein evolved as helical chains. These helical chains are laterally assembled by backbone hydrogen bonding in a direction perpendicular to the helical axis to form helical sheets. This interesting helical‐sheet orientation in the crystal resembles the cross‐α‐amyloids, where α‐helices are arranged laterally as sheets.
Simulation study on novel groove separator in a dual‐loop wet flue gas desulfurization spray tower
Authors: Cui Lin , Lu Jingwen , Liu Lifei , Qin Mingchen , Dong Yong 
Published: March 2020

AbstractThe dual‐loop wet flue gas desulfurization spray tower (DLST) is particularly suitable for achieving “ultralow” emission of SO2 for high‐sulfur coal‐fired power plants. The separator is the key piece of equipment for the DLST. In this study, to overcome the disadvantages of a traditional bowl separator, novel groove separators are proposed and compared with the traditional separator. The effects of different separators on the flue gas flow characteristic, slurry droplet distribution, mass transfer resistance, and desulfurization efficiency were analyzed through numerical simulation based on the Euler–Lagrange method and two‐film theory. The results show that, compared with the traditional bowl separator, the proposed groove separator can improve the uniformity of the gas–liquid flow field in the upper loop, increase the liquid‐film side mass transfer rate significantly, eliminate the empty spaces caused by the high‐speed bypass flue gas, and avoid the “flooding” phenomenon completely. Therefore, the resistance losses caused by the separator can be reduced, the desulfurization efficiency can also be improved by adopting the novel groove separators, and the lower the liquid‐to‐gas ratio, the more obvious the increase in desulfurization efficiency. In general, the advantages of the novel groove separators over the traditional bowl separator are obvious.
Simultaneous improvement of thermal conductivity and mechanical properties for mechanically mixed ABS/h‐BN composites by using small amounts of hyperbranched polymer additives
Authors: Zhang Rong , Hu Hailong , Chen Hai , Li Siqi , Ying Cheng , Huang Shuai , Liu Qingting , Fu Xudong , Hu Shengfei , Wong Ching‐Ping 
Published: March 2020

AbstractRecently, thermal interface materials (TIMs) are in great demands for modern electronics. For mechanically mixed polymer composite TIMs, the thermal conductivity and the mechanical properties are generally lower than expected values due to the sharply increased viscosity and poor filler dispersion. This work shows that addition of a small amount of polyester‐based hyperbranched polymer (HBP) avoided the trade‐off in mechanically mixed ABS/hexagonal boron nitride (h‐BN) composites. After adding 0.5 wt% HBP, the maximum h‐BN content in the composites increased from 50 to 60 wt%. The out‐of‐plane, in‐plane thermal conductivity, and tensile strength of ABS/h‐BN with 50 wt% h‐BN were 0.408, 0.517 W/mK, and 18 MPa, respectively, and were increased to 0.729, 0.847 W/mK, and 32 MPa by adding 0.5 wt% HBP, while 0.972, 1.12 W/mK, and 29.5 MPa were achieved for ABS/h‐BN/HBP with 60 wt% h‐BN. The morphological and rheological results proved that these enhancements are due to the improved h‐BN dispersion by decreasing viscosity of composites during mixing. Theoretical modeling based on the modified effective medium theory confirmed such results and showed that the interfacial thermal resistance also decreased slightly. Thus, this work demonstrates a facile and scalable method for simultaneously improving the thermal conductivity and mechanical properties of thermoplastic‐based TIMs.
Nonparametric universal copula modeling
Authors: Mukhopadhyay Subhadeep , Parzen Emanuel 
Published: March 2020

AbstractTo handle the ubiquitous problem of “dependence learning,” copulas are quickly becoming a pervasive tool across a wide range of data‐driven disciplines encompassing neuroscience, finance, econometrics, genomics, social science, machine learning, healthcare, and many more. At the same time, despite their practical value, the empirical methods of “learning copula from data” have been unsystematic with full of case‐specific recipes. Taking inspiration from modern LP‐nonparametrics, this paper presents a modest contribution to the need for a more unified and structured approach of copula modeling that is simultaneously valid for arbitrary combinations of continuous and discrete variables.
Deep learning for energy markets
Authors: Polson Michael , Sokolov Vadim 
Published: March 2020

AbstractDeep Learning (DL) is combined with extreme value theory (EVT) to predict peak loads observed in energy grids. Forecasting energy loads and prices is challenging due to sharp peaks and troughs that arise due to supply and demand fluctuations from intraday system constraints. We propose a deep temporal extreme value model to capture these effects, which predicts the tail behavior of load spikes. Deep long‐short‐term memory architectures with rectified linear unit activation functions capture trends and temporal dependencies, while EVT captures highly volatile load spikes above a prespecified threshold. To illustrate our methodology, we develop forecasting models for hourly price and demand from the PJM interconnection. The goal is to show that DL‐EVT outperforms traditional methods, both in‐ and out‐of‐sample, by capturing the observed nonlinearities in prices and demand spikes. Finally, we conclude with directions for future research.
Therapeutic Effects of Bilateral Anodal Transcranial Direct Current Stimulation on Prefrontal and Motor Cortical Areas in Children with Autism Spectrum Disorders: A Pilot Study
Authors: Hadoush Hikmat , Nazzal Mohammad , Almasri Nihad A. , Khalil Hanan , Alafeef Maha 
Published: March 2020

Dysfunctional frontal cortical areas associated with clinical features are observed in children with autism spectrum disorder (ASD). This study attempted to identify any potential therapeutic effects of bilateral anodal transcranial direct current stimulation (tDCS) applied over the left and right prefrontal and motor areas on the clinical characteristics of children with ASD. Fifty children with confirmed ASD medical diagnoses were divided equally and randomly into a tDCS treatment group and a control group. The tDCS treatment group underwent 10 sessions (20‐min durations, five per week) of bilateral anodal tDCS stimulation applied simultaneously over the left and right prefrontal and motor areas, whereas the control group underwent the same procedures but with the use of sham tDCS stimulation. Total scores and sub‐scores of autism treatment evaluation checklist (ATEC) (language and communication; sociability; sensory awareness; and behavioral, health, and physical conditions) were measured before and after the tDCS treatment sessions of both groups. There were significant decreases in total ATEC scores (P= 0.014), sociability sub‐scores (P= 0.021), and behavioral, health, and physical condition sub‐scores (P= 0.011) in the tDCS treatment group. No significant changes were observed in total ATEC scores and sub‐scores in the control group. In conclusion, compared to the control group, bilateral anodal tDCS showed potential therapeutic effects on children with ASD in terms of improvements in sociability, behavior, health, and physical conditions with no reported side effects.Autism Res2020, 13: 828–836. © 2020 International Society for Autism Research, Wiley Periodicals, Inc.Lay SummaryDysfunctional frontal cortical areas are associated with clinical features in children with autism spectrum disorder (ASD). Transcranial direct current stimulation (tDCS) is found to be a safe, noninvasive method to stimulate cortical regions and thus have therapeutic effects on children with ASD. © 2020 International Society for Autism Research, Wiley Periodicals, Inc.