bluuebunny/crossref_metadata_2025_split huggingface dataset:
Encouraging impacts of an Open Education Resource Degree Initiative on college students’ progress to degree
Authors: Griffiths Rebecca , Mislevy Jessica , Wang Shuai 
Published: February 2022

AbstractTextbooks are traditional and useful learning resources for college students, but commercial texts books have been widely criticized for their high costs, restricted access, limited flexibility, and uninspiring learning experiences. Open Education Resources (OER) are an alternative to commercial textbooks that have the potential to increase college affordability, access, and instructional quality. The current study examined how an OER degree—or pathway of OER courses that meet the requirements for a degree program—impacted students’ progress to degree at 11 US community colleges. We conducted quasi-experimental impact studies and meta-analysis examining whether OER course enrollment was associated with differences in credit accumulation and cumulative GPA over multiple terms. Overall, we found a positive effect of OER degrees on credit accumulation and no significant difference on cumulative GPA. Taken together, these results suggest students are maintaining their GPAs despite taking more courses, on average. This suggests that students taking OER courses were making faster progress towards degrees than their peers who took no OER courses.
Characterising feedback cultures in higher education: an analysis of strategy documents from 134 UK universities
Authors: Winstone Naomi E. 
Published: February 2022

AbstractFeedback can be framed as a one-way transmission of information driven by educators, or as a two-way process, in which students’ agentic participation is critical to its success. Despite calls for a shift away from the former framing towards the latter, transmission-focused models of feedback continue to dominate practice internationally. Approaches to feedback in any given setting are likely influenced by the dominant feedback culture. The present study aimed to characterise ‘feedback cultures’ within higher education by systematically examining how feedback is framed in 134 UK universities’ (a) educational strategies and (b) Teaching Excellence Framework (TEF) Provider statements. These documents serve to encapsulate each institution’s views of excellence and best-practice; nevertheless, analysis of the documents revealed a stronger focus on the transmission of feedback comments than on supporting students’ learning through feedback processes. Linguistically, students were positioned passively within the documents, as being on the receiving end of teachers’ actions, rather than actively driving their own learning through feedback. These findings inform a framework for conceptualising feedback cultures in higher education, which positions approaches to feedback design, feedback processes and the evaluation and development of feedback on a continuum from transmission-focused to learning-focused. It is argued that strategy documents shape practice in subtle ways; in order to shift towards learning-focused feedback cultures, consideration must be given to how students’ roles and responsibilities are positioned in both policy and practice.
Refractive Index Effects in Pendant Drop Tensiometry
Authors: Pan Ziqing , Trusler J. P. Martin 
Published: February 2022

AbstractAn optical model is established to investigate the effects of refractive index changes on the measurement of interfacial tension by the pendant drop method with axisymmetric drop shape analysis. In such measurements, light passes from the pendant drop through a surrounding bulk phase, an optical window and air to reach the lens of the camera system. The relation between object and image size is typically determined by calibration and, if the refractive indices of any of the materials in the optical path change between calibration and measurement, a correction should be made. The simple model derived in this paper allows corrections to be calculated along with the corresponding contribution to the overall uncertainty of the interfacial tension. The model was verified by measurements of the interfacial tension between decane and water under two different calibration conditions. Neglect of the correction was shown to cause errors of up to 6 % when the bulk phase changed from air (during calibration) to water (during measurements) and of about 9 % when the system was calibrated without the optical window used for the final measurements. The refraction changes due to high pressures and supercritical fluid states can also lead to measurement errors. The proposed model can facilitate more accurate interfacial tension measurements and reduce the amount of repetitive calibration work required.
John Stuart Mill and the Conflicts of Equality
Authors: Hansson Sven Ove 
Published: February 2022

AbstractJohn Stuart Mill commented on the relationship between equality and liberty in general terms, and he also discussed the relationships between equality and four more concrete social goals: equality vs. diversity and individual spontaneity, equality vs. freedom of trade and entrepreneurial activity, equality vs. economic incentives for workpeople, and equality vs. welfare. In his more general statements he wrote off potential conflicts between equality and liberty, claiming that only those liberties that can be enjoyed by all are real liberties—or at least they are the only ones worth defending. However, in several of his more concrete discussions he gave higher priority to various liberty-related goals than to equality. This seeming contradiction can be resolved if we assume that he distinguished between valuing a liberty per se and valuing it as a means to achieve something else.
Disentangling the Concept of Well-Being in Very Old Age Using Rodgers’ Evolutionary Concept Analysis
Authors: Näsman Marina , Nyqvist Fredrica , Nygård Mikael 
Published: February 2022

AbstractWell-being has received increasing attention from researchers and policymakers, and its promotion could be considered pivotal to handle the challenges of aging populations. However, many different well-being concepts have been used inconsistently, and it remains unclear what the concept of well-being refers to among the oldest segments of the population. Hence, there is a need for a more cohesive understanding of the meaning of the concept in this particular context. The aim of this study was to review the scientific literature to examine the conceptualization of well-being in very old age. Rodgers’ evolutionary concept analysis was applied as a guiding framework. A search through scientific databases generated a sample of 568 unique articles published between 2009 and 2019, of which 49 were included in the final analysis. Four main attributes of well-being in very old age were identified: multifaceted; intertwined with health and quality of life; ability to adapt; and part of successful aging. Furthermore, the antecedents and consequences of well-being in very old age, as well as related concepts, were summarized and discussed. The results revealed that there was a transition between general aspects of well-being and specific aspects of very old age. Particularly adaptation appears to be a crucial part of well-being in very old age, and methods of supporting the ability to adapt should therefore be tested and implemented.
Core–shell polymer nanocomposite based on free radical copolymerization of anthranilic acid and o-amino phenol in the presence of copper hexacyanoferrates nanoparticles and its adsorption properties
Authors: Metwally A. M. , Azab M. M. , Mahmoud A. A. , Ali H. M. , Shaaban A. F. 
Published: February 2022

AbstractCore–shell polymer nanocomposite (CSNC) of copper hexacyanoferrate-copolymer of anthranilic acid with o-aminophenol (CHCF-poly(AA-co-OAP)) was synthesized and used as ion exchanger for the sorption of cesium ions from aqueous solution. The nanocomposite was prepared by implantation of CHCF nanoparticles into copolymer of poly(AA-co-OAP) during the polymerization process. The surface morphology and the porous structure were investigated through transmission electron microscope (TEM), scanning electron microscope (SEM) and Brunauer–Emmett–Teller (BET). The characterization of the prepared (CSNC) was carried out by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and Thermogravimetric (TGA). Which SEM and TEM images confirmed the nano-size of the prepared CSNC. The values of adsorption capacity of CSNC towards cesium ions and the factors influence on the removal of cesium from solutions were investigated as function in pH, metal ion concentration, temperature and contact time. The results illustrated that the highest value of sorption capacity of the prepared CSNC towards Cs+ ions was 2.1 mmol g−1 at pH 11, 10 mmol L−1 Cs+ and 25 °C. Four modeling include on Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) isotherms models were studied. According to the obtained data, Langmuir model considered the most suitable model, which suggest that the uptake of Cs+ was monolayer and homogeneous. Also, the adsorption kinetics data was fitted well to pseudo-second-order model. Thermodynamic parameters were calculated in the temperature from 25 to 60 °C and the data revealed that Cs+ sorption was endothermic, spontaneous, and more favorable at higher temperature. Up to 92% desorption of Cs+ was completed with 2 M KCl.
Thermal behaviour of kaolinitic raw materials from San José (Oruro, Bolivia)
Authors: Alfonso P. , Penedo L. A. , García-Valles M. , Martínez S. , Martínez A. , Trujillo J. E. 
Published: February 2022

AbstractKaolin is widespread as a result of the alteration in the San José Sn-Ag deposit located in Oruro, Bolivia. This study presents a chemical, mineralogical and thermal characterization of the San José kaolinitic deposit, which is necessary to determine their optimal applications. Mineral phases of these white silty kaolinitic materials were determined by X-ray diffraction (XRD) and are quartz, kaolinite, K-feldspar, muscovite, illite and minor halloysite, dickite, plagioclase, jarosite, rutile, alunite and gypsum. The fraction < 63 µm contains 20–27 mass% of kaolinite. Differential thermal analysis (DTA) shows an endothermic peak at 520 °C associated with the dehydroxylation of kaolinite and an exothermic peak at ~ 980 °C related to the crystallization of mullite. TG curves show a total mass loss up to 1300 °C of about 8 mass%. The dilatometric curves show a shrinkage at about 890 °C produced by the collapse of metakaolinite into a spinel-like structure, and another shrinkage starts at 1010 °C, at the beginning of the sintering, when the spinel-like phase is transformed to mullite and amorphous SiO2. Lightness L* is 80–92, but only the mined materials have b* < 4, suitable for paper filling applications.
Experiences of Health Facility Childbirth in Sub-Saharan Africa: A Systematic Review of Qualitative Evidence
Authors: Gwacham-Anisiobi Uchenna , Banke-Thomas Aduragbemi 
Published: February 2022

Abstract
Introduction
Access to skilled birth attendance has been prioritised as an intervention to minimise burden of maternal deaths in sub-Saharan Africa (SSA). However, poor experience of care (EoC) is impeding progress. We conducted a systematic review to holistically explore EoC patterns of facility-based childbirth in SSA.

Methods
PubMed, Embase and Scopus databases were searched to identify SSA EoC studies conducted between January 2000 and December 2019. Studies meeting our pre-defined inclusion criteria were quality assessed and relevant data extracted. We utilised the EoC quality standards (defined by the World Health Organization) to summarise and analyse findings while highlighting patterns.

Results
Twenty-two studies of varying quality from 11 SSA countries were included for review. Overall, at least one study from all included countries reported negative EoC in one or more domains of the WHO framework. Across SSA, ‘respect and preservation of dignity’ was the most reported domain of EoC. While most women deemed the pervasive disrespect as unacceptable, studies in West Africa suggest a “normalisation” of disrespect, if the intent is to save their lives. Women often experienced sub-optimal communication and emotional support with providers in public facilities compared to non-public ones in the region. These experiences had an influence on future institutional deliveries.

Discussion
Sub-optimal EoC is widespread in SSA, more so in public facilities. As SSA heath systems explore approaches make progress towards the Sustainable Development Goal 3, emphasis needs to be placed on ensuring women in the region have access to both high-quality provision and experience of care.
Numerical and experimental evaluation of the magnetic interaction for frequency up-conversion in piezoelectric vibration energy harvesters
Authors: Rosso Michele , Corigliano Alberto , Ardito Raffaele 
Published: February 2022

AbstractThe purpose of this work is to improve the modelling process for the application of permanent magnets in a frequency up-conversion (FuC) mechanism for piezoelectric energy harvesters. More specifically, the aim is to avoid the burdensome finite element analyses (FEA) in the framework of electromechanical devices design. The analytical calculations are compared with experimental tests conducted by an ad-hoc set up and with FEA. After investigations on the interaction, an application of FuC mechanism is proposed on a meso-scale case study in which a low frequency seismic mass (LFM) interacts non-linearly, due to magnetic field, with an high frequency piezoelectric vibration energy harvester (PVEH). Numerical simulations have been carried out in the time domain (step-by-step analysis) under a harmonic low-frequency input acceleration signal. The peculiar behavior, due to non-linear dynamics, is investigated in both the repulsive and the attractive configurations of the magnets. The results confirm the effectiveness of magnetic FuC and show that the repulsive case allows the device to recover a larger amount of energy than the attractive configuration.
Tomato plant responses induced by sparingly available inorganic and organic phosphorus forms are modulated by strigolactones
Authors: Santoro Veronica , Schiavon Michela , Visentin Ivan , Martin Maria , Said-Pullicino Daniel , Cardinale Francesca , Celi Luisella 
Published: February 2022

Abstract
Background and aims
Phosphorus (P) is an essential nutrient for plant growth, but is also one of the least accessible in soil. Plants have evolved several strategies to cope with P deficiency and recently the role of the phytohormones strigolactones (SLs) in modulating tomato plants acclimation to P shortage has been described. How SLs regulate the use of P from sparingly accessible P sources, such as organic P or precipitated metal-P systems, is however still unknown in tomato.

Methods
In this study, we compared P acquisition strategies of wild-type (WT) and SL-depleted tomato plants grown hydroponically in the presence of dissolved inorganic phosphate (Pi), dissolved myo-inositol hexaphosphate (myoInsP6), or their coprecipitated form following Fe(II) oxidative precipitation.

Results
Irrespective of the P treatment, SL-depleted plants accumulated more P in their tissues than the WT, possibly due to the constitutively higher expression of high-affinity P transporters and activity of P-hydrolyzing enzymes. Wild-type plants were conversely more effective at acidifying their growth medium and exuding more organic compounds in the presence of dissolved myoInsP6 or coprecipitated forms of P, but this behaviour did not translate into a higher P acquisition.

Conclusions
The two genotypes activated different subsets of responses to bypass low P bioavailability, although the P acquisition efficiency (PAE) was not effectively increased. Strigolactone-depleted plants achieved higher PAE values than WT plants regardless of the applied P form, highlighting a central role of SLs in controlling P uptake and optimizing the cost/benefit ratio of P acquisition.
Measuring the excellence contribution at the journal level: an alternative to Garfield’s impact factor
Authors: Gorraiz Juan , Ulrych Ursula , Glänzel Wolfgang , Arroyo-Machado Wenceslao , Torres-Salinas Daniel 
Published: February 2022

AbstractThe aim of this study is to analyze to which extent the Journal Impact Factor (JIF) reflects the amount of excellent publications contained in a journal in the corresponding subject category. We are introducing two percentile-based indicators in order to measure the excellence contribution at journal level. Calculations of these indicators have been carried out for twenty different Journal Citation Reports (JCR) subject categories to investigate the correlation with Garfield’s Journal Impact Factor. Differences in the ranking according to all three indicators especially in First Quartile (Q1) of each category are shown and discussed. We have also studied the effect of multidisciplinary journals to the excellence contribution at category level and observed considerable differences between the twenty considered categories under analysis. Their omission would lead to neglect a large part of excellent publications, especially in the hard sciences. The introduced excellence indicators are very robust considering the types of documents considered for their calculation. The results of this study show that the journal excellence content is not completely reflected in the JIF measure and affects both Science and Social Science Edition categories. Therefore, the introduction of journal excellence indicators will help to give a more complete picture of the citation impact of a journal, because they are informing directly about the total and normalized excellence contribution of each journal to the corresponding subject category. They are a valuable enrichment and complement of the JIF, and more suitable than the Journal Citation Indicator, recently added to the JCR, because they reflect the inherent skewness of the citation distribution.
Sexuality, Education and Support for People with Intellectual Disabilities: A Systematic Review of the Attitudes of Support Staff and Relatives
Authors: de Wit Wouter , van Oorsouw Wietske M. W. J. , Embregts Petri J. C. M. 
Published: February 2022

AbstractSupport staff and relatives are uncertain about multiple aspects of the sexuality of people with intellectual disabilities. Given that their attitudes embody positive and negative views, they can respectively support and restrict free sexual expression among people with intellectual disabilities and their potential for (intimate) relationships. A qualitative systematic literature review was conducted on the attitudes of support staff and relatives toward the sexuality of people with intellectual disabilities. A systematic search strategy was deployed across seven databases. The identified articles were screened on predetermined inclusion and exclusion criteria, and assessed on quality, which resulted in 31 included studies. A metasynthesis of these studies resulted in two major themes emerging, namely (a) attitudes toward the sexuality of people with intellectual disabilities, and (b) attitudes toward the sex education and support. Themes represented both positive and restrictive attitudes among support staff and relatives. The findings suggest that despite a general acceptance of the sexual rights of people with intellectual disabilities, certain forms of sexuality were approached more cautiously. Moreover, the sexual needs of some subgroups of people with intellectual disabilities received scarce attention. Those support staff and relatives holding rather restrictive attitudes appear to emphasize sexual risks. Finally, support staff and relatives stressed the importance of providing sex education and support for people with intellectual disabilities, while, simultaneously, expressing insecurity over the subject. The findings can help to improve the support provided to support staff and relatives to promote sexual health among people with intellectual disabilities.
A Direct Proof of Convergence of Davis–Yin Splitting Algorithm Allowing Larger Stepsizes
Authors: Aragón-Artacho Francisco J. , Torregrosa-Belén David 
Published: February 2022

AbstractThis note is devoted to the splitting algorithm proposed by Davis and Yin (Set-valued Var. Anal.25(4), 829–858, 2017) for computing a zero of the sum of three maximally monotone operators, with one of them being cocoercive. We provide a direct proof that guarantees its convergence when the stepsizes are smaller than four times the cocoercivity constant, thus doubling the size of the interval established by Davis and Yin. As a by-product, the same conclusion applies to the forward-backward splitting algorithm. Further, we use the notion of “strengthening” of a set-valued operator to derive a new splitting algorithm for computing the resolvent of the sum. Last but not least, we provide some numerical experiments illustrating the importance of appropriately choosing the stepsize and relaxation parameters of the algorithms.
SRT3D: A Sparse Region-Based 3D Object Tracking Approach for the Real World
Authors: Stoiber Manuel , Pfanne Martin , Strobl Klaus H. , Triebel Rudolph , Albu-Schäffer Alin 
Published: February 2022

AbstractRegion-based methods have become increasingly popular for model-based, monocular 3D tracking of texture-less objects in cluttered scenes. However, while they achieve state-of-the-art results, most methods are computationally expensive, requiring significant resources to run in real-time. In the following, we build on our previous work and develop SRT3D, a sparse region-based approach to 3D object tracking that bridges this gap in efficiency. Our method considers image information sparsely along so-called correspondence lines that model the probability of the object’s contour location. We thereby improve on the current state of the art and introduce smoothed step functions that consider a defined global and local uncertainty. For the resulting probabilistic formulation, a thorough analysis is provided. Finally, we use a pre-rendered sparse viewpoint model to create a joint posterior probability for the object pose. The function is maximized using second-order Newton optimization with Tikhonov regularization. During the pose estimation, we differentiate between global and local optimization, using a novel approximation for the first-order derivative employed in the Newton method. In multiple experiments, we demonstrate that the resulting algorithm improves the current state of the art both in terms of runtime and quality, performing particularly well for noisy and cluttered images encountered in the real world.
Targeting purinergic receptors to attenuate inflammation of dry eye
Authors: Wang Jia-Ning , Fan Hua , Song Jian-Tao 
Published: February 2022

AbstractInflammation is one of the potential factors to cause the damage of ocular surface in dry eye disease (DED). Increasing evidence indicated that purinergic A1, A2A, A3, P2X4, P2X7, P2Y1, P2Y2, and P2Y4receptors play an important role in the regulation of inflammation in DED: A1adenosine receptor (A1R) is a systemic pro-inflammatory factor; A2ARis involved in the activation of the MAPK/NF-kB pathway; A3Rcombined with inhibition of adenylate cyclase and regulation of the mitogen-activated protein kinase (MAPK) pathway leads to regulation of transcription; P2X4 promotes receptor-associated activation of pro-inflammatory cytokines and inflammatory vesicles; P2X7 promotes inflammasome activation and release of pro-inflammatory cytokines IL-1β and IL-18; P2Y receptors affect the phospholipase C(PLC)/IP3/Ca2+signaling pathway and mucin secretion. These suggested that purinergic receptors would be promising targets to control the inflammation of DED in the future.