Miracle-dz/UniFAR-FTUs huggingface dataset:
In-situ monitoring of hybrid friction diffusion bonded EN AW 1050/EN CW 004A lap joints using artificial neural nets

In this work, a dissimilar copper/aluminum lap joint was generated by force-controlled hybrid friction diffusion bonding setup (HFDB). During the welding process, the appearing torque, the welding force as well as the plunge depth are recorded over time. Due to the force-controlled process, tool wear and the use of different materials, the resulting data series varies significantly, which makes quality assurance according to classical methods very difficult. Therefore, a Convolutional Neural Network was developed which allows the evaluation of the recorded process data. In this study, data from sound welds as well as data from samples with weld defects were considered. In addition to the different welding qualities, deviations from the ideal conditions due to tool wear and the use of different alloys were also considered. The validity of the developed approach is determined by cross validation during the training process and different amounts of training data. With an accuracy of 88.5%, the approach of using Convolutional Neural Network has proven to be a suitable tool for monitoring the processes.
Pesquisa científica escolar no ensino fundamental: relatos de uma experiência

A pesquisa cientifica na escola basica constitui importante instrumento de trabalho que possibilita tanto aos estudantes, quanto aos professores, ampliar os horizontes das tarefas pedagogicas e dos processos de autonomia na construcao dos conhecimentos. Este texto objetiva-se em relatar uma experiencia de orientacao de pesquisa cientifica na escola, a partir da descricao dos antecedentes das investigacoes, dos movimentos metodologicos das pesquisas e das conclusoes obtidas com a realizacao das atividades. Colocam-se os alunos participantes do grupo de orientacao de pesquisa nao apenas na condicao de sujeitos, mas na condicao de sujeitos-pesquisadores, o que os coloca, tambem, em posicao de autoria. Considera-se que a reflexao a partir da pratica pedagogica constitui-se como importante agente de formacao e reflexao do trabalho docente.
The Taxonomy and Distribution of Lanternfishes (Family Myctophidae) of the Eastern Pacific Ocean

Abstract : This study of the lanternfishes (family Myctophidae) of the eastern Pacific Ocean is intended to meet the need for one publication in which the available information on their taxonomy, distribution, variation, and natural history (the latter information is meager) can be found. It also provides keys to their identification.
Wideband Planar Sleeve Dipole Antenna With Back Cavity

A novel, simple-structure, low-profile, wideband antenna with back cavity is proposed in this letter. The wideband antenna is derived from the planarization improvement of the sleeve dipole antenna. The antenna mainly consists of five parts, which are planar sleeve dipole, L-shaped feeding strip, substrate, coaxial feed, and back cavity. The planar sleeve dipole and the L-shaped strip are printed on both sides of the substrate plate. To verify the design, the antenna is processed and measured with the size of <inline-formula><tex-math notation="LaTeX">$0.5\lambda _{L}\times 0.5\lambda _{L}\times 0.16\lambda _{L}$</tex-math></inline-formula>, where <inline-formula><tex-math notation="LaTeX">$\lambda _{L}$</tex-math></inline-formula> is the wavelength of the low frequency. From the measured results, the proposed antenna achieves a wide impedance bandwidth of 81.4% from 3 to 7.12 GHz with a return loss more than 10 dB. Moreover, the measured gain of the antenna is 6–9.5 dBi, and the radiation pattern is very stable over the entire frequency bandwidth.
Emotional Training and Modification of Disruptive Behaviors through Computer-Game-Based Music Therapy in Secondary Education

Music education research has shown interest in music therapy for integral development of the person, both in their performance and academic knowledge and in their personality. This project aims to analyze the benefits of music therapy in the comprehensive training of students with disruptive behaviors (n = 6). Tests designed by Gallego, Alonso, Cruz, and Lizama (1999) were conducted to assess emotional intelligence, which showed very low results. A series of activities were designed based on the use of the music videogame Musichao, the curricular content of which was adapted for this pilot experience. Subsequently, the emotional intelligence tests were applied again to determine the effectiveness of the teaching experience. The results indicate that, with the use of this videogame, significant improvements were obtained, both in the development of multiple intelligences and in self-motivation, self-awareness, self-control, and more specifically, in social skills, minimizing behaviors that were classified as inappropriate and/or aggressive, and becoming more skilled in their interactions with the surrounding environment.
Higher Education Expansion and Credit Risk: Evidence from China Universities Panel Data

ABSTRACT This study aimed to examine the relationship between two constructs: scale and credit risk of the higher educational institutions. A regression analysis was conducted for panel data from 2015 to 2019 with fixed/random effects. The outcomes showed that scale had a significantly negative relationship with both credit risk measures, indicating that the rapid expansion of a university will decrease its ability to repay the debt and efficiently operate. In other words, credit risk greatly arises while a higher education institution (HEI) is expanding rapidly. The findings illustrated that HEIs in China were actually suffering diseconomies of scale and expanding too fast to increase the quality and efficiency.
Mean Reversion in Investment Decisions: The Case of Hollywood*

One explanation for the comparatively lower quality of movie sequels is selection bias, known in personnel economics as the Peter principle. Only abnormally successful movies are selected for a sequel. Another explanation is a deterministic depreciation in quality due to the decline in the novelty of the sequel’s characters and storyline. Both explanations predict that, relative to the original, the sequel’s performance will revert towards the mean. We develop a structural model to decompose the two explanations, and estimate its parameters using detailed data on 306 franchise films and 2,823 non‐franchise films between 1995 and 2014. Parameter estimates provide evidence of selection bias for action & adventure and horror movies, and evidence of a deterministic decline in quality for comedies.
Implementing a hydrodynamic model to complement water depth and flow velocity data for physical scale experiments of rivers and estuaries

Abstract. Physical scale experiments enhance our understanding of fluvial, tidal and coastal processes. However, it has proven challenging to acquire accurate and continuous data on water depth and flow velocity due to limitations of the measuring equipment and necessary simplifications during post-processing. A novel means to augment measurements is to numerically model flow over the experimental digital elevation models. We investigated to what extent the numerical hydrodynamic model Nays2D can reproduce unsteady, nonuniform shallow flow in scale experiments and under which conditions a model is preferred to measurements. To this end, we tested Nays2D for one tidal and two fluvial scale experiments and extended Nays2D to allow for flume tilting which is necessary to steer tidal flow. The modelled water depth and flow velocity closely resembled the measured data for locations where the quality of the measured data was most reliable, and model results may be improved by applying a spatially variable roughness. The implication of the experimental data-model integration is that conducting experiments requires fewer measurements and less post-processing in a simple, affordable and labour-inexpensive manner that results in continuous spatio-temporal data of better overall quality. Also, this integration will aid experimental design.
Entrepreneurial potential in the university: intentions and attitudes towards new venture creation.

In the last decade, European governments have become increasingly aware of the potential of the university system to detect the entrepreneurial interests of students and to motivate and train them to start new successful business, as a source of socioeconomic welfare. From this point of view, it would be expected that the transit through university had a positive impact on entrepreneurial vocations, attitudes and perceived competence of students. This study uses a comparison between first and last-year students at the University of Leon (Spain), with the purpose of determining the extent to which these variables evolve along superior studies, making clear the formative and motivational shortages of university systems in entrepreneurship issues. Results suggest that the transit through university doesn’t foster in an appropriate way the entrepreneurial potential of students, they showing low intentions to start a business as professional career and negative attitudes towards entrepreneurial behaviours. Paradoxically, results also show that first-year students feel relative confident in their personal skills for entrepreneurship, and knowledge and abilities acquired at the university foster students’ self-efficacy even more. Conclusions from the study point out the need of incorporating entrepreneurship training and motivation in the university agenda in several ways, in order to make the most of the human capital generated and to transform it in economic and social utility.
Rôle des lymphocytes Th17 et des cellules dendritiques plasmocytoïdes dans la réaction aiguë du greffon contre l'hôte après allogreffe de cellules souches hématopoïétiques

L’allogreffe de cellules souches hematopoietiques limitant le succes de ce traitement.La GVHD aigue est liee a la reconnaissance et la destruction par les lymphocytes Talloreactifs du donneur des tissus cibles du receveur (peau, tube digestif et foie), apresactivation par les cellules dendritiques du receveur. Si le role des lymphocytes Th17dans la GVHD aigue a ete mis en evidence dans des modeles murins, leur role chezl’homme est moins clair. Nous avons explore la presence des lymphocytes Th17 dansla muqueuse digestive de 23 patients et dans la peau de 38 patients lors du diagnosticde GVHD aigue, au moyen de 2 marqueurs des Th17, CCR6 et CD161 et du facteurde transcription des Th17, RORγt. Il existe une augmentation significative descellules CCR6+, CD161+ et RORγt+ dans la muqueuse digestive et la peau des patientsavec une GVHD aigue. De plus, comme il a ete rapporte que les cellules dendritiquesplasmocytoides (PDC) favorisent la differenciation des lymphocytes Th17, nousavons voulu quantifier chez ces patients les PDC au moyen des 2 marqueurs, CD123et BDCA2. Il existe une augmentation des PDC dans la muqueuse digestive et la peaudes patients avec une GVHD aigue. De plus la forte expression de la proteine induitepar l’IFN de type I Mx1 dans la peau des patients avec une GVHD aigue suggere queles PDC sont fonctionnelles et produisent de l’IFN de type I. L’ensemble de cesresultats suggere l’existence d’une reponse mediee par les lymphocytes Th17 dans laGVHD aigue digestive et cutanee ainsi qu’un nouveau lien physiopathologique entreles PDC et les lymphocytes Th17.
Tip Packaged High-Temperature Miniature Sensor Based on Suspended Core Optical Fiber

A tip packaged high-temperature miniature sensor constructed by a suspended-core optical fiber (SCF) is presented and experimentally demonstrated. An SCF with a short length spliced to the single-mode fiber (SMF) is utilized to build the Fabry-Perot interferometer (FPI). A section of SMF acting as a tip package is spliced to the end of the SCF, which gives the sensor immunity of the external refractive index (RI). The test processes of heating up and cooling down are repeated three times to evaluate the repeatability and hysteresis. The arithmetic means temperature sensitivity increases from 9.42 pm/ °C to 12.51 pm/ °C over the temperature range of 50–800 °C. Moreover, the maximum stability error is 5 °C within the high-temperature 800 °C duration period. This tip packaged sensor with simple fabrication, good repeatability, and good stability within a large dynamic range is advantageous to practical temperature measurement and massive production.
Turbulence as a Network of Fourier Modes

Turbulence is the duality of chaotic dynamics and hierarchical organization of a field over a large range of scales due to advective nonlinearities. Quadratic nonlinearities (e.g., advection) in real space, translates into triadic interactions in Fourier space. Those interactions can be computed using fast Fourier transforms, or other methods of computing convolution integrals. However, more generally, they can be interpreted as a network of interacting nodes, where each interaction is between a node and a pair. In this formulation, each node interacts with a list of pairs that satisfy the triadic interaction condition with that node, and the convolution becomes a sum over this list. A regular wavenumber space mesh can be written in the form of such a network. Reducing the resolution of a regular mesh and combining the nearby nodes in order to obtain the reduced network corresponding to the low resolution mesh, we can deduce the reduction rules for such a network. This perspective allows us to develop network models as approximations of various types of turbulent dynamics. Various examples, such as shell models, nested polyhedra models, or predator–prey models, are briefly discussed. A prescription for setting up a small world variants of these models are given.
Distribution of lesson within Indonesian latest curriculum using a web-based application

This study aims to explain and to describe the role of school principals in the implementation of 2013 Curriculum at Elementary School Pakem 2 Sleman Yogyakarta. This study uses qualitative method. The instruments of the research were observation, interview and documentation. It is where the researcher seeks to collect and analyze research data through primary data sources in the form of structured interviews with the principal regarding the role of school principal in implementation of 2013 Curriculum. The results of this research show that school principals have played good roles in implementation of 2013 Curriculum in Elementary School Pakem 2 Sleman Yogyakarta. The roles are such as: (a) role as an educator, (b) role as a manager, (c) role as an administrator, (d) role as a supervisor, (e) role as a leader, (f) role as an innovator, and (g) role as a motivator. Collaboration between school principals, school supervisor, and teacher has been maximizing in implementing curriculum in this school. The school principal is very open minded to anyone who wants to give input form of suggestions or criticisms for the progress of the school.
Melatonin protects against membrane alterations affected by ‘Artificial Light at Night’ in a circadian-disrupted model of rat

ABSTRACT Artificial Light at Night (ALAN) causes alteration in the redox status and membrane-bound transporters. Melatonin has pleiotropic effects on normal physiology and acts as a potential antioxidant. This study was undertaken to evaluate the effects of ALAN-induced alterations in the membrane transporters, oxidative stress biomarkers and to evaluate the protective effects of melatonin supplementation prior to exposure of light in a circadian-disrupted model of rat. Young male Wistar rats 250 ± 20 g were randomly segregated into following groups; Group (I) control, Group (II) melatonin-treated group (10 mg/kg, orally), Group (III) ALAN (500 lux), Group (IV) ALAN with melatonin, for 10 days. Results show that melatonin is an effective mediator of membrane-bound transporters revealed by activation of Na+/K+-ATPase (NKA), plasma membrane Ca2+-ATPase (PMCA) and suppression of Na+/H+ exchanger (NHE) activity. Oxidative stress biomarkers such as total thiol (T-SH), sialic acid (SA), lipid hydroperoxides (LHs) and protein carbonylation (PC) are also restored to the normal level after supplementation of melatonin. These findings demonstrate the protective effect of melatonin on membrane-bound enzymes along with other oxidative stress biomarkers against light-mediated oxidative damage in erythrocyte membrane.
Creatividad con Open Data, aproximación desde análisis bibliométrico. Caso: Instituto Nacional de Estadística y Geografía (México)

Resumen ? Como ha influido en la creatividad el uso del Open Data en los ultimos cinco anos? La proliferacion de politicas de datos abiertos de los gobiernos en los ultimos cinco anos, principalmente a partir de su implementacion oficial por el gobierno de los Estados Unidos desde el ano 2009, ha abierto las puertas para que los gobiernos de una gran cantidad de paises alrededor del mundo abran su informacion para que sea reutilizada por cualquier organizacion o persona. Esa reutilizacion, ha permitido el desarrollo de aplicaciones digitales que facilitan la interpretacion de esos repositorios de informacion para la toma de decisiones, el Gobierno de Mexico, ha desarrollado aplicaciones que van desde el conocimiento de las emisiones de gases de efecto invernadero, hasta los lugares donde se brindan servicios de salud publica. Este trabajo, se enfoco en el analisis bibliometrico de los usos que las personas, organizaciones o los propios gobiernos, han desarrollado mediante la utilizacion de los repositorios abiertos de datos, el cual arrojo que los principales usos creativos que se le da a esta informacion, se enfocan principalmente en la solucion de los problemas que aquejan a los complejos urbanos.
A Synchronized Grid Integrated Three-Phase Inverter with a Renewable Source for Power Sharing

In this paper, a three-phase inverter with renewable source input is integrated into a grid in synchronization for power sharing by load. In previous topologies, the DC source connected inverter is not synchronized to the grid which causes harmonics and voltage distortions damaging the load and the source. In order to ensure power sharing by the load from the inverter and the grid, the inverter needs to be operated in synchronization to the grid with the same voltage mag-nitude, frequency and phase as that of the grid voltage. In this paper, the com-plete power from the load is shared by the three-phase grid and the three-phase inverter module reducing the consumption from the conventional grid. This is achieved using the PLL for the reference angular frequency generation with feedback from grid voltage and is connected to the sinusoidal PWM generator. The PLL is used to generate unit vector template reference signals for the signal generator operating the six-switch inverter. The inverter and grid are inter-connected through LC filter for the reduction of harmonics. The power sharing, voltage, and current graphs with THD analysis are analyzed with the help of the MATLAB software.
Climatology and Detection of Overshooting Convection From 4 Years of GPM Precipitation Radar and Passive Microwave Observations

A 4‐year Global Precipitation Measurement (GPM) Precipitation Feature (PF) data set is used to quantify the frequency and global distribution of overshooting convection. In this study, overshooting convection is defined as PFs with maximum 20 dBZ echo top height (MAXHT20) greater than the height of the lapse rate tropopause, derived from ERA‐Interim reanalysis data. The geographical distribution of overshooting convection exhibits a strong preference for specific land regions, such as over the central United States, Argentina, Central Africa, and Colombia. Larger areas and greater occurrence of 20 dBZ radar reflectivity at the tropopause are found in northern middle to high latitudes than in the tropics. The occurrence of 20 dBZ radar reflectivity reaching above the level of 380 K potential temperature (Z380K) in middle and high latitudes is found to be comparable to that in the tropics. Furthermore, a methodology is developed to detect overshooting convection using the GPM Microwave Imager measured brightness temperature at 183.31 ± 3 and 183.31 ± 7 GHz, and Polarization Corrected Temperature at 89 GHz. The geographical distribution of overshooting convection can be closely reproduced using the combinations of these brightness temperatures with an average Heidke skill score of 0.4 and probability of 0.38. This shows the possibility of identifying overshooting convection from microwave observations at high‐frequency channels near the water vapor absorption line centered at 183.31 GHz from other satellite missions.
Evaluation of the genetic diversity and genome-wide linkage disequilibrium of Chinese maize inbred lines.

Investigation of the genetic diversity, population structure, and linkage disequilibrium of maize will assist in the selection of parental lines for enhanced efficiency of maize breeding. In the present research, we investigated genetic diversity, linkage disequilibrium, and population structure among 173 inbred lines that were commercially important and/or were parental lines used for breeding in China. Using the model-based Bayesian clustering analysis, these lines could be assigned to four subgroups, Lan, P, Reid, and TSPT, most of which were in agreement with the pedigree of information. Using 78 SSR markers, the genetic diversity was determined to be an average of 8.1 alleles per locus (range 2 to 17). The average values of PIC (Polymorphic information content) and gene diversity were 0.667 and 0.704, respectively. A total of 547 pairs of SSRs on the same chromosome demonstrated significant linkage disequilibrium (LD) at the 0.01 level. Our results suggested that this population may be suitable for future marker-phenotype association analysis. In addition, the proportions of the observed LD were higher than that those of expected LD, indicating that we be careful for a high risk of spurious association, which could be generated by population stratification when using association mapping. The genetic diversity, population structure, and LD analysis in this study provided provide a basis for future association mapping for genes and quantitative trait loci.