bluuebunny/crossref_metadata_2025_split huggingface dataset:
Touchscreens for All? Angeleitetes Spielen als Einstieg für Senioren und Seniorinnen in digitale Technologien
Authors: Oppl Sabrina 
Published: February 2020

ZusammenfassungDurch die fortschreitende Digitalisierung ist für die Bewältigung von vielen Alltagssituationen zunehmend die Nutzung von Touchscreen-basierten Geräten notwendig. Dies kann besonders für Menschen im hohen Erwachsenenalter zu neuen Herausforderungen führen und ihre gesellschaftliche Teilhabe erschweren. Digitale Unterhaltungsspiele am Tablet können beitragen, positive Einstiegserfahrungen mit interaktiven digitalen Medien zu sammeln und die weitere Auseinandersetzung mit diesen Medien fördern. Im vorliegenden Beitrag steht die effektive Unterstützung von Senioren und Seniorinnen bei den ersten spielerischen Auseinandersetzungen mit dem Tablet im Mittelpunkt. Es werden wesentliche Elemente eines praxiserprobten Unterstützungskonzepts eingeführt und ein Leitfaden für Lernbegleiter/innen vorgestellt. Der Leitfaden gibt detaillierte Anleitungen wie ein erfahrungsbasiertes Lehr-Lernarrangement mit vorausgewählten Spielen und einem Scaffolding-Ansatz vorbereitet und umgesetzt werden kann. Die Wirksamkeit des Lehr-Lernarrangements im Sinne der Zielsetzung konnte in mehreren qualitativen Studien gezeigt werden. Der Artikel gibt anhand von Beispielen aus diesen Studien vertieften Einblick in die einzelnen Phasen des Leitfadens, dessen Potentiale und Grenzen der Einsetzbarkeit. Somit finden Praktiker und Praktikerinnen eine Anleitung für die wirksame Unterstützung von älteren Menschen bei den ersten spielerischen Auseinandersetzungen mit Touchscreen-Geräten.
Politicas de ampliação da jornada escolar: em destaque as propostas de Educação em Tempo Integral no contexto do Programa Mais Educação
Authors: Abdulmassih Marília Beatriz Ferreira , Chizzotti Antonio 
Published: February 2020

O presente artigo, tem por objetivo analisar as políticas de ampliação da jornada escolar no contexto do Programa Mais Educação, como mola impulsionadora para a melhoria do desempenho dos estudantes da educação básica, através do maior tempo de permanência nos espaços escolares. Pode-se considerar que, a Educação em tempo integral e a ampliação do tempo de permanência dos estudantes, permite à escola enquanto espaço de reelaboração do conhecimento, incorporar em seu currículo atividades para o desenvolvimento de competências cognitivas e atitudinais necessárias a uma formação cidadã. Observa-se também, que existe uma enorme distância entre o discurso e a intenção, para que essas propostas realmente se efetivem.
Rigidity and trace properties of divergence-measure vector fields
Authors: Leonardi Gian Paolo , Saracco Giorgio 
Published: February 2020

AbstractWe consider a φ-rigidity property for divergence-free vector fields in the Euclideann-space, whereφ⁢(t){\varphi(t)}is a non-negative convex function vanishing only att=0{t=0}. We show that this property is always satisfied in dimensionn=2{n=2}, while in higher dimension it requires some further restriction on φ. In particular, we exhibit counterexamples toquadratic rigidity(i.e. whenφ⁢(t)=c⁢t2{\varphi(t)=ct^{2}}) in dimensionn≥4{n\geq 4}. The validity of the quadratic rigidity, which we prove in dimensionn=2{n=2}, implies the existence of the trace of a divergence-measure vector field ξ on anℋ1{\mathcal{H}^{1}}-rectifiable setS, as soon as its weak normal trace[ξ⋅νS]{[\xi\cdot\nu_{S}]}is maximal onS. As an application, we deduce that the graph of an extremal solution to the prescribed mean curvature equation in a weakly-regular domain becomes vertical near the boundary in a pointwise sense.
Active Galactic Nuclei in polarized light
Authors: Shablovinskaya Elena , Afanasiev Viktor 
Published: February 2020

Abstract
Due to the compactness active galactic nuclei (AGN) are still unresolved with optical observations. However, structure and physical conditions of the matter in their central parts are especially important to study the processes of the matter accretion to supermassive black holes and eventually these investigations are essential to understand the galaxy evolution. Polarization contains information about the interaction of electromagnetic waves with the environment and provides information about the physical processes in the central regions of the AGNs that could not be found with the help of other optical observations. In this paper the importance of applying polarimetry methods to the study of geometry, kinematics, and physical processes in AGN in polarized light is discussed. An overview of the mechanisms of polarization formation, their connection with different structures and scales are provided. Also, we overview the polarimetric investigations based on different assumptions that are done using the observations conducted in Special Astrophysical Observatory of Russian Academy of Sciences.
Newton’s method for nonlinear stochastic wave equations
Authors: Leszczyński Henryk , Wrzosek Monika 
Published: February 2020

Abstract
We consider nonlinear stochastic wave equations driven by time-space white noise. The existence of solutions is proved by the method of successive approximations. Next we apply Newton’s method. The main result concerning its first-order convergence is based on Cairoli’s maximal inequalities for two-parameter martingales. Moreover, a second-order convergence in a probabilistic sense is demonstrated.
What’s in a Tweet? Gender and sexism moderate reactions to antifat sexist humor on Twitter
Authors: Greenwood Dara , Gautam Richa 
Published: February 2020

AbstractThe present study investigated whether antifat sexist humor (compared to antifat sexist statements or control statements), conveyed via Tweets, would impact perceptions of an overweight female target depicted in a workplace harassment scenario. We examined whether gender, antifat attitudes, and sexism would impact joke perceptions and moderate perceptions of the joke-relevant target. Participants (n = 451) were drawn from MTurk and completed the study online. They were randomly exposed to one of three tweet conditions and then read and responded to the harassment vignette, among filler vignettes, before completing sexism and antifat measures. Antifat attitudes unexpectedly shifted as a function of study prime and were thus not considered as a moderator. Results showed that men high in hostile sexism reported a greater likelihood of retweeting/favoriting antifat sexist jokes than men low on hostile sexism or women high in hostile sexism. Individuals high in hostile sexism in the joke condition found the behavior of the target less appropriate, and the behavior of the ostensible perpetrator more appropriate, than those in the control condition and those low on hostile sexism. Similar findings were obtained for benevolent sexism. Findings underscore the power of social media as a vehicle for disparagement humor and its consequences.
(Deep) FAIR mathematics
Authors: Berčič Katja , Kohlhase Michael , Rabe Florian 
Published: February 2020

Abstract
In this article, we analyze the state of research data in mathematics. We find that while the mathematical community embraces the notion of open data, the FAIR principles are not yet sufficiently realized. Indeed, we claim that the case of mathematical data is special, since the objects of interest are abstract (all properties can be known) and complex (they have a rich inner structure that must be represented). We present a novel classification of mathematical data and derive an extended set of FAIR requirements, which accomodate the special needs of math datasets. We summarize these as deep FAIR. Finally, we show a prototypical system infrastructure, which can realize deep FAIRness for one category (tabular data) of mathematical datasets.
A benchmarking measurement campaign in GNSS-denied/challenged indoor/outdoor and transitional environments
Authors: Retscher Guenther , Kealy Allison , Gabela Jelena , Li Yan , Goel Salil , Toth Charles K. , Masiero Andrea , Błaszczak-Bąk Wioleta , Gikas Vassilis , Perakis Harris , Koppanyi Zoltan , Grejner-Brzezinska Dorota 
Published: February 2020

Abstract
Localization in GNSS-denied/challenged indoor/outdoor and transitional environments represents a challenging research problem. This paper reports about a sequence of extensive experiments, conducted at The Ohio State University (OSU) as part of the joint effort of the FIG/IAG WG on Multi-sensor Systems. Their overall aim is to assess the feasibility of achieving GNSS-like performance for ubiquitous positioning in terms of autonomous, global, preferably infrastructure-free positioning of portable platforms at affordable cost efficiency. In the data acquisition campaign, multiple sensor platforms, including vehicles, bicyclists and pedestrians were used whereby cooperative positioning (CP) is the major focus to achieve a joint navigation solution. The GPSVan of The Ohio State University was used as the main reference vehicle and for pedestrians, a specially designed helmet was developed. The employed/tested positioning techniques are based on using sensor data from GNSS, Ultra-wide Band (UWB), Wireless Fidelity (Wi-Fi), vison-based positioning with cameras and Light Detection and Ranging (LiDAR) as well as inertial sensors. The experimental and initial results include the preliminary data processing, UWB sensor calibration and Wi-Fi indoor positioning with room-level granularity and platform trajectory determination. The results demonstrate that CP techniques are extremely useful for positioning of platforms navigating in swarms or networks. A significant performance improvement in terms of positioning accuracy and reliability is achieved. Using UWB, decimeter-level positioning accuracy is achievable under typical conditions, such as normal walls, average complexity buildings, etc. Using Wi-Fi fingerprinting, success rates of approximately 97 % were obtained for correctly detecting the room-level location of the user.
The direct geodesic problem and an approximate analytical solution in Cartesian coordinates on a triaxial ellipsoid
Authors: Panou G. , Korakitis R. 
Published: February 2020

Abstract
In this work, the direct geodesic problem in Cartesian coordinates on a triaxial ellipsoid is solved by an approximate analytical method. The parametric coordinates are used and the parametric to Cartesian coordinates conversion and vice versa are presented. The geodesic equations on a triaxial ellipsoid in Cartesian coordinates are solved using a Taylor series expansion. The solution provides the Cartesian coordinates and the angle between the line of constant v and the geodesic at the end point. An extensive data set of geodesics, previously studied with a numerical method, is used in order to validate the presented analytical method in terms of stability, accuracy and execution time. We conclude that the presented method is suitable for a triaxial ellipsoid with small eccentricities and an accurate solution is obtained. At a similar accuracy level, this method is about thirty times faster than the corresponding numerical method. Finally, the presented method can also be applied in the degenerate case of an oblate spheroid, which is extensively used in geodesy.
Analysis of effectiveness and drug related problems of pain reliever for knee osteoarthritis: weighing clinical risk and benefit
Authors: Khotib Junaidi , Setiawan Henny Utami , Nurhan Ahmad Dzulfikri , Rahadiansyah Erreza , Ardianto Chrismawan , Rahmadi Mahardian 
Published: February 2020

Abstract

Background
Osteoarthritis (OA) is a chronic degenerative joint disease, characterized by physiological disorders, such as cartilage degradation, bone remodeling, osteophyte formation, and joint inflammation, which results in pain. Several studies have reported problems with the use of pain medications in OA, such as the use of a combination of many drugs and their long-term use. Therefore, this study was designed to evaluate the use of pain medications in OA patients. The study focused on the analysis of effectiveness and drug related problems (DRPs) with the category of drug interactions and adverse drug events (ADEs) in knee OA patients in Orthopedic and Traumatology Clinic, Universitas Airlangga Teaching Hospital, Surabaya, Indonesia.

Methods
The study used a retrospective approach through tracking and recording of the medical data from the period of 1st January to 30th June, 2018. The potential of drug interactions was determined by analyzing data based on literature. The actual side effects of the drug were identified based on the patient’s medical record through clinical data, laboratory data, and therapeutic data received by the patient. The study involved 143 subjects who met the inclusion criteria of 871 visits to the hospital.

Results
The results showed that women as much as 80.42% with an age distribution of at most 46–65 years are the most affected by OA cases. The predominant history of illness and comorbidities in OA patients was hypertension in 58.74% of patients. The use of analgesic meloxicam had a percentage of 26.06%, sodium diclofenac 20.21%, mefenamic acid 4.36% and paracetamol 4.25%. The effectiveness of the use of pain reliever was characterized by a decrease in VAS in each patient at the beginning and at the end of the study, where a decrease in pain intensity occurred in 79.72% of patients who received pain medications. Based on drug interactions, we were able to identify pharmacodynamic interactions of 43 events (4.94%) and onine events of pharmacokinetic interactions (1.03%), with a minor severity of 7 events (0.80%),44 moderate events (5.05%), and one major event (0.11%). Mostly identified side effects of the drugs were those due to the use of non-steroid anti inflammatory drugs, which occurred in 42 events (4.82%).

Conclusions
It can be concluded that OA therapy with a number of pain relievers shows an adequate therapeutic response with some side effects and interactions both pharmacokinetically and pharmacodynamically.
Rumen bacterial community of young and adult of reindeer (Rangifer tarandus) from Yamalo-Nenets Autonomous District of Russia
Authors: Laishev Kasim A. , Ilina Larisa A. , Filippova Valentina A. , Dunyashev Timur P. , Laptev Georgiy Yu. , Abakumov Evgeny V. 
Published: February 2020

Abstract
The aim of the work was to compare the taxonomic composition of the rumen procariotic community in young and adult individuals of Nenets breed reindeer (Rangifer tarandus ) from the central part of the Yamal region by using the NGS method (next generation sequencing) and compare the microbiome composition of reindeer with the microbiome of their initial vegetation food material. The obtained data showed that the dominant position in microbial communities, like that of other ruminants, was occupied by representatives of phylum Firmicutes and Bacteroidetes, whose total share between observed groups did not differ significantly. The composition of the microbiome of the rumen of the investigated group of animals was completely different from the microbiome structure of the initial vegetation cover. Digestion of vegetation by reindeers resulted in complex transformation in the initial plant microbiome and an increase of biological diversity which was expressed in operational taxonomic unit (OTU) numbers increasing and changes in indexes of alpha-diversity parameters. According to the results of alpha- and beta- diversity of the rumen microbial communities, the greatest uniqueness was revealed for the microbiomes of the adults in comparison with calves and young. The presence of changes in the biodiversity indexes of the rumen microbiota in the reindeer, examined by us, confirm the opinion of the researchers that the microbial community may also reflect the physiological state of the animals. It has also been demonstrated that the presence of the phylum Verrucomicrobia, and the genera Stenotrophomonas, Pseudomonas, etc., may be specific to Nenets breed reindeer and have a pattern with their presence on various plants and lichens that are part of the reindeer diet. This is partially confirmed by data on plants microbiome taxonomy.
Biochar, poultry manure and NPK fertilizer: sole and combine application effects on soil properties and ginger (Zingiber officinale Roscoe) performance in a tropical Alfisol
Authors: Adekiya Aruna Olasekan , Agbede Taiwo Michael , Ejue Wutem Sunny , Aboyeji Christopher Muyiwa , Dunsin Oluwagbenga , Aremu Charity O. , Owolabi Ayotunde O. , Ajiboye Babatunde O. , Okunlola Oluwatobi Faith , Adesola Omowumi Oluwanifemi 
Published: February 2020

Abstract
Biochar has a low chemical composition and is recalcitrant to degradation. For good soil fertility and nutrient use efficiency of crops it becomes imperative that addition of a fast releasing nutrient source to biochar be sought. Therefore, studies were conducted in 2017 and 2018 to evaluate the effects of biochar with poultry manure (PM) and NPK fertilizer on soil properties, growth and yield of ginger. Treatments evaluated were: biochar applied alone at 15 t ha-1 , PM applied alone at 15 t ha-1, NPK fertilizer applied alone at 200 kg ha-1, biochar applied at 15 t ha-1 with poultry manure applied at 15 t ha-1 (B+PM), biochar applied at 15 t ha-1 with NPK fertilizer applied at 200 kg ha-1 (B+NPK) and a control with no amendment whatsoever. The experimental design was a randomized complete block design with three replications. Biochar, PM, NPK fertilizer alone or B+PM and B+NPK improved soil physical and chemical properties, growth and yield of ginger compared to no amendment (control). NPK fertilizer did not improve soil physical properties nor increased pH, OM, Ca and Mg significantly. B+PM and B+NPK improved soil physical and chemical properties, growth and ginger yield compared to their sole forms. Although B+PM had better soil physical properties, B+NPK increased yield and growth of ginger compared to B+PM. B+NPK increased the yield of ginger by 12.2% and 10.6% in 2017 and 2018, respectively compared with B+PM. B+NPK also increased the yield of ginger by 49.2% and 50.3% in 2017 and 2018, respectively compared to biochar alone. This was related to high presence of nutrients in B+NPK especially N and K which are important for ginger rhizome formation.
Antimicrobial and antioxidant activity of Silver, Gold and Silver-Gold Alloy Nanoparticles phytosynthesized using extract of Opuntia ficus-indica
Authors: Adebayo Elijah A. , Ibikunle Jelilat B. , Oke Abel M. , Lateef Agbaje , Azeez Musibau A. , Oluwatoyin Adeboye O. , AyanfeOluwa Ajala V. , Blessing Olowoporoku T. , Comfort Okunlola O. , Adekunle Ogundele O. , Badmus Jelili A. , Asafa Tesleem B. , Beukes Lorika S. , Gueguim-Kana Evariste B. , Hakeem Abbas S. 
Published: February 2020

Abstract
Aqueous extract of Opuntia ficus-indica (OF) was employed to reduce salt solutions of silver nitrate, gold chloride and silver nitrate/gold chloride to OFAgNPs, OFAuNPs, and OFAg-AuNPs respectively. Characterization of the particles was carried out using different standard methods, and their antimicrobial and antioxidant activities were also evaluated. The UV-vis spectroscopy showed silver, gold and silver-gold alloys nanoparticles with surface plasmon resonance at 462, 545 and 539 nm, respectively. The significant FTIR peaks: OFAgNPs (3300 and 1635 cm−1), OFAuNPs (3288 and 1635 cm−1) and OFAg-AuNPs (3307 and 1637 cm−1) for synthesized nanoparticles pointed to protein as both capping and stabilizing agent. Generally, particles were spherical with size range of 27-38 nm, 11-28 nm and 15-54 nm for silver, gold and silver-gold alloys nanoparticles respectively. OFAgNPs gave highest antagonistic effects against tested bacteria (35-82%), followed by OFAg-AuNPs (12-75%) and AuNPs (11-48%). The fungal inhibition of 44-70% for OFAgNPs, 42-79% for OFAuNPs and 52-92% for OFAg-AuNPs were obtained. DPPH scavenging activities were obtained as follows: OFAgNPs (52.25–57.50%), OFAuNPs (37.07-59.07%) and OFAg-AuNPs (37.07-63.00%) at tested concentrations of 20–100 µg/ml, which were dose-dependent in comparison with standard BHA (42.57–91.27%) and ascorbic acid (52.13–84.20%). The bleaching inhibition assay of ABTS showed activities of 41.33–61.83% (OFAgNPs), 27.37-50.60% (OFAuNPs) and 32.83-44.33% (OFAg-AuNPs). The synthesized nanoparticles demonstrated an excellent antioxidant and antimicrobial activity. The current study, to the best of our knowledge, is the first time to use Opuntia ficus-indica to synthesize silver, gold and silver-gold alloys nanoparticles.
Identifying asymmetric responses of sectoral equities to oil price shocks in a NARDL model
Authors: Dhaoui Abderrazak , Chevallier Julien , Ma Feng 
Published: February 2020

Abstract
This study examines the asymmetric responses of sector stock indices returns to positive and negative fluctuations in oil prices using the NARDL model. Our empirical findings support indirect transmissions of oil price fluctuation to the financial market through industrial production and short-term interest rate. Furthermore, both direct and indirect impacts of oil price shocks on stock returns are sector dependent. These results are with substantial policy implications either for investors or for policymakers. They mainly help government authorities to reduce the instability in financial markets caused by the major oil price shocks. The analysis of the impact of oil price shocks on stock markets also helps the financial market participants to adjust their decisions and revise their coverage of energy policy that is substantially affected by the turbulence and uncertainty in the crude oil market. Finally, based on the forecast of the oil price shocks effects, the central bank should adjust the interest rate in order to face up to the inflation rate induced by oil prices since oil prices act as an inflationary factor.
Modeling Dependence Among Suction, Moisture, and Cracking of a Novel Biochar Synthesized from Weed Species
Authors: Prakash Atma , Bordoloi Sanandam , Hazra Budhaditya , Garg Ankit , Sreedeep S. , Zhu Hong-hu 
Published: February 2020

Abstract
Water hyacinth (WH), an invasive weed species, has found its utility in the synthesis of biochar (BC). BC is further being explored for geoenvironmental applications such as landfill covers, green infrastructure, etc. The soil–water retention curve (SWRC) and crack potential are two of the key inputs required for modeling the unsaturated soil behavior in these projects. However, the impact of BC on SWRC and crack potential and the dependence among these two properties have not been studied extensively. In this article, initially, the impact of BC synthesized from WH as a soil additive is studied in terms of SWRC (volumetric water content, θw and suction, ψ) and crack intensity factor (CIF). It is found that an addition of 5–10 % BC can increase the water retention capacity by 41 % and reduce the crack potential by 50 %. Thereafter, the joint distribution of SWRC and CIF is established using a trivariate copula approach. Based on the minimum Akaike Information Criterion (AIC), uniform distribution for CIF and θw and gamma distribution for ψ are found to be appropriate. For modeling the dependence structure, two commonly used elliptical copulas, namely, Gaussian and “t” are explored. The results indicate that the t copula provides a better fit than the Gaussian copula and can successfully be used to model the highly nonlinear dependence structure between SWRC and CIF.