bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Politics of Part-Time Work: Gender, Employment Status, and Preferences for Redistribution
Authors: Pedulla David S. , Donnelly Michael J. 
Published: December 2020

AbstractThe social and economic forces that shape attitudes toward the welfare state are of central concern to social scientists. Scholarship in this area has paid limited attention to how working part-time, the employment status of nearly 20% of the U.S. workforce, affects redistribution preferences. In this article, we theoretically develop and empirically test an argument about the ways that part-time work, and its relationship to gender, shape redistribution preferences. We articulate two gender-differentiated pathways—one material and one about threats to social status—through which part-time work and gender may jointly shape individuals’ preferences for redistribution. We test our argument using cross-sectional and panel data from the General Social Survey in the United States. We find that the positive relationship between part-time employment, compared to full-time employment, and redistribution preferences is stronger for men than for women. Indeed, we do not detect a relationship between part-time work and redistribution preferences among women. Our results provide support for a gendered relationship between part-time employment and redistribution preferences and demonstrate that both material and status-based mechanisms shape this association.
How do Employees Adapt to Organizational Change? The Role of Meaning-making and Work Engagement
Authors: van den Heuvel Machteld , Demerouti Evangelia , Bakker Arnold B. , Hetland Jørn , Schaufeli Wilmar B. 
Published: December 2020

Abstract
This multi-wave, multi-source study focuses on the benefits of work engagement for employee adaptation to organizational change. The change entailed the implementation of a flexible office design in an engineering firm, which caused radical change for employees. Building on conservation of resources (COR) theory and change transition models, we predict that work engagement trajectories during change are crucial for successful adaptation. The hypothesized process was that initial employee meaning-making will facilitate work engagement, which, in turn, predicts supervisor-rated adaptive performance (i.e. adaptive work-role performance and extra-role performance) via attitude-to-change. Attitude-to-change was modeled as reciprocally related to work engagement at different points in time. Weekly questionnaires were completed by 71 employees during the first five weeks of the change (296 observations). Latent growth trajectories using weekly engagement measures showed no overall growth, but did show significant variance around the slope of work engagement. Meaning-making and attitude-to-change at the onset were positively related to initial levels, but not to growth of work engagement. Meaning-making was indirectly related to short-term attitude-to-change via work engagement. Short-term attitude-to-change was predictive of supervisor-rated adaptive performance and long-term attitude-to-change. Finally, work engagement (slope) predicted long-term attitude-to-change and supervisor-rated extra-role performance via short-term attitude-to-change. Taken together, the study contributes to knowledge about micro-level transition processes of employee adaptation and the benefits of work engagement during change.
BetweenFaqīrandFankār? Sounding Complex Subjectivities through Shah Jo Rāg in Sindh, Pakistan
Authors: HUANG PEI-LING 
Published: December 2020

AbstractRāgī faqīrsare devotees who perform Shah Jo Rāg, a musical tradition for singing Sufi poetry at the shrine of poet-mystic Shāh ‘Abdul Latīf Bhiṭṭāī (1689–1752) in Sindh, Pakistan. Focusing on the life experiences of my teacher Manthār Faqīr, I historicise various subject positions that contemporaryrāgī faqīrsrefer to asfaqīr(devotee),fankār(performing artist),kārīgar(skilled artisan), and artist. Through Manthār Faqīr’s performances, I analyse sonic manifestations of his complex subjectivities that at times shift, at times coexist, to demonstrate how he deploys sounded strategies emerging from different subject positions to balance devotion, artistry, legitimacy, and livelihood.
Low‐complexity detection for uplink massive MIMO SCMA systems
Authors: Sharma Sanjeev , Deka Kuntal , Beferull‐Lozano Baltasar 
Published: December 2020

AbstractThis paper presents a sparse code multiple access (SCMA) system with massive antennas at the base station. This system is referred to as M‐SCMA system. A spectrally‐efficient and massive access next‐generation wireless network is realized through massive antennas and non‐orthogonal SCMA techniques. Two detection algorithms, namely, modified message passing algorithm (MMPA) and extended message passing algorithm (EMPA) are proposed to detect multiple users' symbols in M‐SCMA. A deep learning (DL)‐based detection scheme is also proposed for M‐SCMA so as to avoid channel estimation and to lower the detection complexity. Numerical results show that the DL‐based detection has similar performance as MMPA even when the channel information is not estimated explicitly. Furthermore, authors also establish the sum rate trade‐off between SCMA and orthogonal multiple access in a massive antenna system. The impact of various M‐SCMA parameters such as the number of antennas and the overloading factor, on the proposed DL, MMPA, and EMPA‐based detection are also investigated.
Review of automated segmentation approaches for knee images
Authors: Ridhma  , Kaur Manvjeet , Sofat Sanjeev , Chouhan Devendra K. 
Published: December 2020

AbstractKnee disorders are common among the human population. Knee osteoarthritis (OA) is the most widespread knee joint disorder, which may require surgical treatment. The detection and diagnosis of knee joint disorders from medical images demand enormous human effort and time. The development of a computer‐aided diagnosis (CAD) system can notably minimise the burden of medical experts and remove the intra‐observer and inter‐observer variations. To achieve the goal, the highly challenging research problem of knee image segmentation has been frequently paid attention in past years, which can be efficiently applied in the development of the CAD system. Knee image segmentation is a challenging task owing to the image contrasts, intensity variations, shape irregularities, and the presence of thin cartilage structures. Therefore, this paper presents a literature review of automated segmentation approaches mainly focused on the segmentation of knee cartilage and bone, with respect to the underlying technical aspects, datasets used, and the performance reported. The paper also presents the growth from classical segmentation approaches towards the deep learning approaches in the knee image segmentation. Owing to the varying quality and complexity of different knee image datasets, this paper abstains from doing a rigorous comparative evaluation of image segmentation approaches.
Gadolinium-based contrast agents: What we learned from acute adverse events, nephrogenic systemic fibrosis and brain retention
Authors: Bäuerle Tobias , Saake Marc , Uder Michael 
Published: December 2020

Background Radiologists have been administering gadolinium-based contrast agents (GBCA) in magnetic resonance imaging for several decades, so that there is abundant experience with these agents regarding allergic-like reactions, nephrogenic systemic fibrosis (NSF) and gadolinium retention in the brain.
Methods This review is based on a selective literature search and reflects the current state of research on acute adverse effects of GBCA, NSF and brain retention of gadolinium.
Results Due to the frequent use of GBCA, data on adverse effects of these compounds are available in large collectives. Allergic-like reactions occurred rarely, whereas severe acute reactions were very rarely observed. Systemic changes in NSF also occur very rarely, although measures to avoid NSF resulted in a significantly reduced incidence of NSF. Due to gadolinium retention in the body after administration of linear MR contrast agents, only macrocyclic preparations are currently used with few exceptions. Clear clinical correlates of gadolinium retention in the brain could not be identified so far. Although the clinical added value of GBCA is undisputed, individual risks associated with the injection of GBCA should be identified and the use of non-contrast enhanced MR techniques should be considered. Alternative contrast agents such as iron oxide nanoparticles are not clinically approved, but are currently undergoing clinical trials.
Conclusion GBCA have a very good risk profile with a low rate of adverse effects or systemic manifestations such as NSF. Gadolinium retention in the brain can be minimized by the use of macrocyclic GBCA, although clear clinical correlates due to gadolinium retention in the brain following administration of linear GBCA could not be identified yet.
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Citation Format
Gold Catalysis and Furans: A Powerful Match for Synthetic Connections
Authors: Nejrotti Stefano , Prandi Cristina 
Published: December 2020

AbstractThis review summarizes the advances made on the synthesis and functionalization of furans via gold catalysis during the period between 2016 and 2020. A separate section is dedicated to the tandem gold-catalyzed synthesis and functionalization of furans.1	Introduction2	Gold-Catalyzed Synthesis of Furans2.1	Cycloisomerizations of Alkynyl and Cumulenyl Alcohols2.2	Cycloisomerizations of Alkynyl and Allenyl Ketones2.3	Reactions with External Oxidants2.4	Miscellaneous3	Gold-Catalyzed Functionalization of Furans3.1	Cycloadditions3.2	Furan Ring Decorations3.3	Reactions Involving Furan Ring Opening4	Gold-Catalyzed Tandem Synthesis and Functionalization of Furans­4.1	Cycloisomerizations Followed by Gold-Catalyzed Cycloaddition4.2	Cycloisomerizations to a Gold 1,3- or 1,4-Dipole and Intermolecular Annulation4.3	Cycloisomerizations to a Gold Carbene and Intermolecular Trapping5	Conclusion
Croton argenteus (silver July croton).
Authors: Rojas-Sandoval Julissa 
Published: December 2020

Abstract

C. argenteus is an herbaceous weed of open sunny sites, pastures, and agricultural lands. It is also a common weed in rice plantations (González, 2000). Because this species grows in seasonally waterlogged areas, its seeds are often dispersed as a contaminant in dried and wet mud (Standley and Steyermark, 1946). Currently, it is listed as invasive only in Cuba, but it is a common weed in dry and wet fields in areas within and outside its native distribution range (Oviedo Prieto et al., 2012; USDA-NRCS, 2015).
Caladium bicolor (heart of Jesus).
Authors: Rojas-Sandoval Julissa 
Published: December 2020

Abstract

C. bicolor is a dormant geophyte herb extensively commercialized in the horticultural trade around the world (Deng, 2012; USDA-ARS, 2016). It is often cultivated as an ornamental and potted plant and naturalized populations of C. bicolor can be found in areas within and outside its native distribution range (Madison, 1981; Govaerts, 2016). Currently, C. bicolor is listed as invasive in Trinidad and Tobago, Guam, Micronesia, Palau, Hawaii and the Philippines, where it is considered a species that is altering native plant communities by displacing native species, and changing community structures and ecological functions (Space et al., 2003; Herrera et al., 2010; PIER, 2016; Trinidad Biodiversity, 2016).
Least-squares Wavelet and Cross-wavelet Analyses of VLBI Baseline Length and Temperature Time Series: Fortaleza–Hartebeesthoek–Westford–Wettzell
Authors: Ghaderpour Ebrahim 
Published: December 2020

Abstract
Extensive least-squares wavelet and cross-wavelet analyses are performed on the Very Long Baseline Interferometry (VLBI) baseline length and temperature time series for a network of four VLBI antennas located in different continents. These analyses do not rely on any pre-processing of the measurements including interpolations or gap-filling, and they can provide accurate instantaneous frequency information along with phase differences in the time–frequency domain. Out of four antennas mounted in Fortaleza, Hartebeesthoek, Westford, and Wettzell, the most and the least possibly impacted VLBI time series by the annual temperature variation are Westford–Wettzell and Fortaleza–Hartebeesthoek, respectively. Furthermore, the annual components of the temperature time series in Westford and Wettzell lead the ones in the corresponding VLBI time series by nearly one month, where one of the baseline sides is either in Westford or Wettzell.
III International Seminar on Pedagogical Practice
Authors: Prada-Nuñez R , Hernández-Suárez C A , Dueñas Ramírez L M , Sandoval-Amador A , V-Niño E D 
Published: December 2020

Abstract
The pedagogical practices are the various actions that the teacher executes to enhance the human development of the student. Within these activities are teaching, communicating, socializing experiences, reflecting from everyday life, evaluating cognitive processes and even interacting with the educational community. These practices require a conceptual, procedural and strategie preparation on the part of the teacher. Their knowledge will never be enough to achieve that their students as individuals or collectively manage to appropriate the seeds of knowledge that they must acquire.
The riskiest teachers build their proposals for pedagogical practices within the framework of research projects, to obtain models that allow evaluating the effectiveness of their activities. Later, after an act of reflection and argumentation based on their own experiences as well as those of others, these innovative teachers manage to have sufficiënt arguments to socialize and disseminate their new knowledge and experience acquired.
List of titles Organizing Committee, International Scientific Committee, National Scientific Committee, Sponsor, Partners are available in this Pdf.
Geometry for design: approaches to the study of representation and dimension and their contributions to the modeling of phenomena
Authors: Acevedo-Rincon J P , Flórez-Pabón C E 
Published: December 2020

AbstractThe difficulties of representation and understanding of the dimension are evident in the different educational levels. University education is no stranger to this situation. This communication was developed within the framework of the graphic design course. This course was designed under the use of specialized software in geometry, which was freely available and intuitive. It should be remembered that the adequate use of representations and attributes proper to the dimension aids in the representations of movement phenomena, as well as in the representations in force diagrams in the teaching of physics. This qualitative research aims to address aspects of representation and dimensionality from the description of some selected tasks of the group participants, who contrast the first representations, with their final activities. That is, these representations showed their evolution in construction, to the extent that the flat representations of objects in the portfolio were built in real dimensions, keeping the proportional relationship between its parts.
Simulation of optimal exploitation of production wells in northern oil and gas fields
Authors: Filimonov M Yu , Vaganova N A 
Published: December 2020

Abstract
In this paper a new model of the propagation of thermal fields in frozen soil from production wells in the northern oil and gas fields is considered. The proposed model takes into account the most significant thermal insulation characteristics of wells, including the intertube space. The developed complex of programs and the performed numerical simulatons allow to significantly reduce the area of the projected well pads of the oil and gas field by reducing the predicted radius of thawing of frozen soil from functioning wells and choosing the optimal mode of the operation during 30 years.
Influence of metal nitrates on the process of coal oxidation of various metamorphism stages
Authors: Larionov K B , Zenkov A V , Mishakov I V , Gromov A A 
Published: December 2020

Abstract
The process of oxidation of lignite and bituminous coal modified with metal nitrates (Cu, Ce, Na, Co, Fe) in the amount of 5 wt.% is studied. Application of additives to the coal samples is carried out by the method of incipient wetness impregnation with preliminary dissolution of the additive in an aqueous-alcohol solution with a volume ratio of C2H5OH/H2O=50/50. Reactivity of the samples is studied by thermogravimetric analysis in the oxidation mode at a heating rate of 2.5 °C/min in the temperature range 25–600°C at atmospheric pressure. It has been found that application of activating additives contributes to reduction of the initial temperature of intensive oxidation (Ati=5–97°C) and to a shift of the process to the low-temperature region as a whole. According to the results obtained, the greatest activity is specific for addition of Cu(NO3)2. It is manifested in a decrease in the temperature of the beginning of intensive oxidation ti and an increase in the average reaction rate wav. The Coats-Redfern method is used to calculate activation energy of the oxidation process in the presence of activating additives. Maximum decrease in Eais observed for a copper nitrate-modified coal sample.
Uncertainty of the shadow method for the analysis of evaporating droplets
Authors: Antonevich Y V , Zaitsev D V , Kabov O A 
Published: December 2020

Abstract
The shadow method of image analysis is the most commonly used experimental technique for investigation of evaporating droplet dynamics and wettability. So, the shadow method uncertainty and limit of its applicability for analysis of evaporating droplets are actual issues. In this paper, we experimentally study the applicability limit of the shadow image analysis and contributions of errors, connected with non-telecentricity of the optical system, as well as diffraction and numerical errors, at various stages of droplet evaporation.
Three-dimensional simulation of drop motion in channels of different cross-sections
Authors: Solnyshkina O A , Fatkullina N B , Bulatova A Z 
Published: December 2020

Abstract
Three-dimensional Boundary Element Method accelerated using a heterogeneous Fast Multipole Method is employed to study two-phase flow in a microchannel of different cross-sections. The flow of a mixture of two Newtonian liquids with equal viscosities and densities is described by Stokes equations. A comparison of the simulation results of the droplet dynamics in cylindrical capillaries with experimental data available in the literature was carried out and showed the qualitative agreement. The deformable droplet motion is considered in a channel with a circle, square, and hexagon cross-sectional shape. The influence of droplet size on a relative velocity in a channel is studied. The applied approach to numerical simulation can be used to solve a wide range of problems related to emulsion flows in microscales.
Thermodynamic modeling of the gas-plasma phase in the processing of radioactive graphite in a gas plasma furnace
Authors: Barbin N M , Kobelev A M , Terent’ev D I 
Published: December 2020

Abstract
The method of thermodynamic modeling was used to determine composition and thermophysical properties of a gas-plasma phase of a system of radioactive graphite – water vapor in the temperature range from 1000 to 3200 K. It has been established that in the temperature range from 1000 to 1100 K, the main components of the gas-plasma phase are H2, CO, H2O, CO2, CH4. In the temperature range from 1100 to 2200 K – H2, CO, H2O, CO2. At temperatures from 2200 to 2600 K those are H2, CO, H2O, CO2, H. In the temperature range from 2600 to 3000 K those are H2, CO, H2O, CO2, H, OH. In the temperature range from 3000 to 3200 K those are H2, CO, H2O, H, CO2, OH, O, O2. The thermophysical properties of the system under consideration have been calculated: specific volume, entropy, enthalpy, total internal energy, number of moles in the system.
Magnetoplasmadynamic thruster with an applied field based on the second generation high-temperature superconductors
Authors: Voronov A.S. , Troitskiy A.A. , Egorov I.D. , Samoilenkov S.V. , Vavilov A.P. 
Published: December 2020

Abstract
The present work reports the results of the magnetoplasmadynamic (MPD) thruster with an applied field (AF) based on the second-generation high-temperature superconductor (2G HTS) tape functioning research. Achieved thrust, specific impulse, and efficiency were investigated. Experiments were performed on the 25-kW magnetoplasmadynamic thruster model with two types of 10-mm and 17-mm cathodes. The investigation tests were performed with the goal of studying the efficiency of using 2G HTS tape as electromagnetic coils creating applied field for MPD thruster. The used as the applied magnetic field for thruster 2G HTS coil creates magnetic field up to 1 Tesla. The results showed that the thrust and specific impulse with HTSC applied field increases up to 300% and efficiency increases up to 700%. The best achieved results are following: thrust up to 850 mN, specific impulse up to 3840 s, and efficiency up to 54%. Created MPD thruster with HTSC applied field has a resource of 5400 s work total with all the cathodes, more than 150 launches, and single continuous launch up to 140 seconds. The experiments performed show the high efficiency of using the 2G HTS tape as the material for the electromagnetic coils creating applied field for magnetoplasmadynamic thrusters. Strong applied field up to 1 T electromagnetic coils were maid of the 2G HTS tape by SuperOx own production facilities.
Modification of the singlet equation for a molecular system of solid spheres near a solid surface in the Percus-Yevick approximation
Authors: Agrafonov Yu V , Petrushin I S 
Published: December 2020

Abstract
An analysis of theoretical methods for studying the molecular structure of liquids bordering a solid surface was carried out. It was established that the currently existing nonlinear integral equations for partial distribution functions do not have an analytical solution for spatially inhomogeneous liquids. A linear integral equation having an analytical solution for a system of solid spheres near a solid surface was proposed.
Comparative investigation of Zr-Mo-Si-B thin films using picoindener module and nanohardness tester
Authors: Kiryukhantsev-Korneev Ph V , Loginov P A , Orekhov A S 
Published: December 2020

Abstract
Zr–Mo-Si-B coatings were successfully deposited using non-reactive magnetron sputtering of ceramic ZrMoSiB target. Structural investigations have been carried out using X-ray diffraction analysis, high-resolution transmission and scanning electron microscopy, glow-discharge optical-emission, and energy-dispersive spectroscopy. The coatings were subjected to the indentation using nanohardness-tester and picoindenter module placed in the column of transmission electron microscope. The obtained results show that the coatings consist of hcp-ZrB2 phase with needle crystallites 5-10 nm in diameter elongated in the direction of growth. The coatings demonstrated relatively high mechanical properties and recordable elastic recovery up to 84%. Results of indentation tests exhibited the close results.
The Study of Phase Equilibria and Superprotonic Crystals in the (NH4)2SO4 - K2SO4 - H2SO4 - H2O system
Authors: Komornikov V A , Timakov I S , Makarova I P , Selezneva E V , Grebenev V V , Zainullin O B 
Published: December 2020

Abstract
The phase equilibria in the quaternary water-salt system K2SO4 - (NH4)2SO4 - H2SO4 - H2O at a temperature of 35 °C were studied for the first time. The areas of crystallization, solubility, and reproducible conditions for obtaining crystals of solid solutions were determined: (Ki_
x
(NH4)
x
)2SO4, (Ki.
x
(NH4)
x
)3H(SO4)2, (Ki.
x
(NH4)
x
)9H7(SO4)8H2O, which are superprotonics. The study of phase equilibria in ternary systems K2SO4 - H2SO4 - H2O and (NH4)2SO4 - H2SO4- H2O was carried out, the solubility values and the solubility character of the compounds (NH4)2SO4 and K2SO4, (NH4)3H(SO4)2 and K3H(SO4)2, K9H7(SO4)8H2O, NH4HSO4 n KHSO4 were determined.