bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effects of Bythotrephes longimanus invasion on diets and growth of age‐0 yellow perch in Oneida Lake, New York
Authors: Jordan Peter D. B. , Figary Stephanie E. , Brooking Thomas E. , Holeck Kristen T. , Hotaling Christopher W. , VanDeValk Anthony J. , Rudstam Lars G. 
Published: March 2023

AbstractBythotrephes longimanus is a predatory zooplankton native to Eurasia known for its large caudal spine. This species can decrease Daphnia abundance and may decrease growth rates of native planktivorous fish including yellow perch (Perca flavescens). Bythotrephes was first documented in Oneida Lake, USA in 2019 and reached high densities in 2020 and 2021. This recent invasion created an opportunity to investigate at what length yellow perch feed on Bythotrephes, if age‐0 yellow perch select for Bythotrephes, and if yellow perch first‐year growth decreased. We found Bythotrephes in the stomachs of 23% (2020) and 35% (2021) of age‐1 and older yellow perch caught from June through September and 54% of the age‐0 yellow perch caught from June through October (2021). Age‐0 yellow perch started feeding on Bythotrephes at 27 mm and selected for Bythotrephes from June 24 through the autumn of 2021. Bythotrephes accounted for 54% of age‐0 diets by dry weight over the summer and fall. We used the extensive water quality and biological monitoring data from Oneida Lake to develop a multivariate linear regression model for age‐0 yellow perch October length from 1993 to 2021. Significant variables included were age‐0 yellow perch abundance (negative effect) and temperature, Daphnia biomass, and Bythotrephes presence, all positive effects. Contrary to our expectations, Bythotrephes were selected by age‐0 yellow perch from end of June through October, and contributed a substantial proportion of ingested mass by age‐0 perch, without negatively affecting age‐0 yellow perch growth.
Dental students' and faculty perception of online exams with e‐invigilation in Cyprus
Authors: Giannakopoulos Kostis , Kavadella Argyro , Kavvadia Katerina , Yiallouris Andreas , Kaklamanos Eleftherios G. 
Published: March 2023

AbstractIntroductionDuring the recent pandemic, e‐learning and e‐assessment methods have been implemented worldwide, providing opportunities for further implementation in the dental curriculum. This study aims to research the dental students' and dental faculty's perceptions of online exams with e‐invigilation.Materials and MethodsOnline questionnaires were developed and delivered, after three semesters of online exams, to all students and faculty. Descriptive statistics were performed, and answers were grouped into Principal Components (PC) using Principal Component Analysis (PCA). Statistical significance was set at p < .05.ResultsTwo‐hundred and sixty dental students (83.7%) and 24 dental faculty members (63.1%) answered the online questionnaires. PCA of students' responses revealed 4 PC, ‘University support to students’, ‘Comparison between online and face‐to‐face exams’, ‘Preparation for the online exams’ and ‘Attitudes towards the technology used for the online exams’. PCA of faculty responses revealed 5 PC: ‘Comparison between online and face‐to‐face exams’, ‘University support to faculty’, ‘Faculty attitudes towards the exam procedures’, ‘Human factors associated with the exam procedures’ and ‘Exam invigilation’. The overall satisfaction was high for both staff and students (higher for students and female staff). Students with previous experience in online exams scored more positively than first‐year students. University support, process‐related stress and e‐invigilation were highlighted.ConclusionsThe overall satisfaction with the e‐exams was high, despite the technical problems, time‐consuming processes and related stress. University support (training, IT support and resources) and mock exams emerged as important elements of online exams, as was the e‐invigilation, which students perceived as efficient and non‐intrusive.
Comparative Green Advantage: Growth Regimes and Public Investment in Renewable Energy R&D
Authors: Driscoll Daniel 
Published: March 2023

AbstractMany consider research and development (R&D) a crucial pillar of decarbonization, yet few have investigated what actually drives investment. What drives public investment in renewable energy R&D in wealthy democracies? Using OECD data, this research note tests a number of hypotheses from the literature and finds that public investment in renewable energy R&D is most closely associated with growth regimes and their related characteristics. Furthermore, the ‘most invested’ are dynamic services export‐led growth regimes who are deindustrializing and moving towards knowledge‐based sectors like information and communications technology and finance. In short, economies investing the most in renewable energy R&D have the least structurally carbon‐intensive growth regime. As international economic integration locks many countries into specific path‐dependent roles, these findings suggest that there is a comparative advantage to the green transition. It concludes with a discussion of the asymmetric green capacities between core and periphery countries in the European Union.
Emotional worlds colliding: A qualitative exploration of the emotional experiences of transgender and cisgender women in romantic relationships during transition
Authors: Smithee Lauren , Few‐Demo April 
Published: March 2023

AbstractRelationships in which one partner is transgender are often more complex compared to other LGBQ+ couples, due to the ways in which gender transition prompts changes for each partner and their relationship. Despite the impact of transition on both partners, the relationships of transgender people have been underresearched. This study was guided by symbolic interactionism to explore how transgender and cisgender women in romantic relationships experienced their relationship during their transition process. Constructivist grounded theory was used to analyze interviews with 20 transgender and cisgender participants using group‐level analysis. Both groups described their journeys in terms of emotional tensions that ebbed and flowed across time. Participants reflected on how they experienced tensions internally and within their relationships as they worked through change and created meaning from their experiences. Recommendations for research and clinical work are provided, in light of these findings.
Wildfire risk, salience, and housing development in the wildland–urban interface
Authors: Black Katie Jo , Irwin Nicholas B. , McCoy Shawn J. 
Published: March 2023

AbstractAs wildfires increase in both severity and frequency, understanding the role of risk saliency on human behaviors in the face of fire risks becomes paramount. While research has shown that homebuyers capitalize wildfire risk following a fire, studies of the role that risk saliency plays on residential development is limited. This paper aims to fill this gap by studying the link between wildfire risk saliency and the rate of residential development in wildfire‐prone areas, by treating recent wildfires as conditionally exogenous shocks to saliency. Using geospatial data on residential development in Colorado, we show that saliency shocks due to wildfire lead to statistically significant reductions in the rate of new development in wildfire risk zones that last upwards of 5 years, a result that is robust to a number of alternative explanations. We explore the policy implications of these findings, noting that education on fire risks may curtail some but not all of the development in these high wildfire‐risk areas due to the rapid growth of development in these regions.
Math Is Not a Universal Language: Supporting Middle School Students with Learning Disabilities Using Explicit Vocabulary Instruction in Mathematics Classrooms
Authors: Peeples Katherine N. , Kroesch Allison M. , VanUitert Victoria J. 
Published: March 2023

AbstractMiddle school students with learning disabilities often struggle with reading and literacy skills, including vocabulary, and require support in content‐area classes such as mathematics where weak vocabulary knowledge can negatively affect learning, achievement, and deep understanding. However, in general, middle school mathematics teachers do not receive training in literacy instruction, much less in explicit vocabulary instruction. Additionally, relatively few studies have examined content‐area vocabulary instruction at the middle or secondary school level. This study addressed these gaps in the research by examining the effect of a performance feedback and coaching intervention on middle school mathematics teachers’ use of explicit mathematics vocabulary instruction. Results of the study indicate that performance feedback and coaching had moderately positive effects on teachers’ use and quality of explicit mathematics vocabulary instruction.
Product design with attribute dependence
Authors: Novo‐Peteiro José A. 
Published: March 2023

AbstractThis paper studies how product design and pricing strategies are affected by the existing relationship between the characteristics that integrate the product. The analysis shows that complementarity and low substitutability encourage the provision of quality incorporated to the products and increase the quality distortion and cannibalization problems that are common in segmented markets. A two‐product strategy with a common attribute is shown to be a feasible strategy for reasons other than cost savings, namely attribute dependence. In addition, menu pricing is found to be the most profitable strategy, and a commonality strategy is more profitable than a common‐product strategy.
Comparing the impact of Joe Biden and Donald Trump on popular attitudes toward their parties
Authors: Jacobson Gary C. 
Published: March 2023

AbstractThis article extends the analysis of how presidents influence popular beliefs and feelings about their parties to include Donald Trump's full term and the first 2 years of Joe Biden's presidency. The results from examination of hundreds of surveys confirm that both presidents, like their predecessors, have strongly influenced evaluations of their parties generally and of their congressional wings specifically. They have also had a powerful impact on assessments of their party's competence in dealing with the COVID‐19 pandemic and on voters' preferences in their midterm election. For the most part, Trump's impact has been notably greater than Biden's, whose influence generally matches that of earlier presidents. Trump also stands out as having a larger and more consistent impact on opinions of the opposition, and he is exceptional in continuing to influence his party's reputation and standing after leaving office.
The convergence of culture, technology and context: A pathway to reducing Mathophobia and improving achievement in mathematics
Authors: Oladejo Adekunle I. , Olateju Taibat T. , Okebukola Peter A. , Agboluaje Taiwo M. , Sanni Rasheed , Shabani Juma , Akinola Victor O. , Ebisin Aderonke 
Published: March 2023

AbstractThis study explored the potency of CTCA in reducing math anxiety and promoting meaningful learning of mathematics among secondary school students. The study adopted a mixed‐method (explanatory sequential) design involving a quasi‐experimental design and individual in‐depth interviews. Participants were drawn from two schools, purposively selected within Lagos state educational district V. Three instruments: Set Theory Achievement Test, Math Anxiety Scale and Students' Perception about CTCA Interview Guide were used to collect the quantitative and qualitative data subsequently. The experimental group (102 students) was taught using the culturo‐techno‐contextual approach while the control group (106 students) was taught with the traditional lecture method. Treatment lasted six weeks after which posttest and retention test (four weeks after posttest) were conducted. MANCOVA was used to analyze the quantitative data. The results obtained suggest that CTCA reduces math anxiety and enhanced learning achievement [Pillai's Trace = 0.34 (F = 53.09; p<0.01)] more effectively than the traditional teaching method. No significant gender difference was also found in the achievement of the experimental group. Students' perception about the use of CTCA was generally positive. Within the scope and limitations of the study, it was recommended that CTCA should be adopted by secondary school teachers in teaching mathematics concepts.
Interobserver agreement of lateral and oblique radiography and standing cone beam CT of the caudal cervical articular process joints of horses
Authors: Brown Kara A. , Davidson Elizabeth J. , Johnson Amy L. , Stefanovski Darko , Wulster Kathryn B. , Ortved Kyla 
Published: March 2023

AbstractCaudal cervical articular process joint osteoarthritis (CAPJ OA) leads to career‐altering clinical signs in the horse. Oblique radiographs and standing cone beam computed tomography (CBCT) facilitate the assessment of this area, however, the variability of interpretation of these images is currently unknown. This retrospective, secondary analysis, methods comparison study investigated interobserver agreement between clinicians and modality in grades of CAPJ OA on lateral and oblique radiographs and CBCT. We hypothesized that agreement between clinicians’ grades of CAPJ OA would be lowest for oblique radiographs and highest for CBCT, and agreement between grades of CAPJ OA would be low for all pairs of modalities. Horses underwent lateral and oblique radiography and CBCT of the CAPJs of C5‐C6 and C6‐C7. Radiographs and CBCT images were graded retrospectively by four blinded clinicians using 3‐point scales. Cohen's kappa analysis was used to evaluate interobserver agreement between grades of CAPJ OA, and agreement between grades of CAPJ OA between different modalities was explored using kappa‐weighted analysis. Agreement between clinicians’ grades of CAPJ OA was moderate for lateral radiographs (0.49), and fair for oblique radiographs (0.23) and CBCT (0.36). For all modalities, agreement was slight to fair between clinicians for CAPJs with grade 1 (normal, 0.21–0.32) or 2 (mild, 0.13–0.36) CAPJ OA, and moderate to substantial for grade 3 (moderate to severe, 0.45–0.77) CAPJ OA. Agreement between grades of CAPJ OA was fair for all pairs of modalities. This study provides important information regarding the inconsistency of interpretation of mild CAPJ OA on radiographs and CBCT amongst clinicians.
Medical Device Hybrid Manufacturing: Translating the Coordinate System From Metal Additive Manufacturing to Subtractive Post-Processing
Authors: Suriano Justin T. , Tafuni Angelantonio , Mullen Lewis , Racanelli Joseph , Tarantino Robert , Lieber Samuel C. 
Published: March 2023

AbstractAdditive manufacturing (AM) has transformed not only how parts can be realized but also their design. Metal additive manufacturing (MAM) has increased AM’s utility toward the manufacture of functional products. This has been seen in several industries including medical device, aerospace, and the automotive industries. The main limitation of MAM continues to be the part dimensional tolerances that can be achieved, and the respective surface finish produced. Hybrid manufacturing processes have been used to address these limitations; however, there remain challenges of how to translate the component’s coordinate system from AM to subtractive post-processes. This paper explores this topic through a medical device case study. A translatable coordinate system was produced by first designing features to serve as a datum reference frame (DRF). These features were introduced by MAM and then finalized with wire-electrical discharge machining (EDM). The produced DRF features successfully prepared the component for translation from the MAM to subtractive post-process. The completed medical device component met the expected requirements with a less than 1% difference on key part nominal dimensions. In addition, the hybrid process exhibited a potential for sustainable manufacturing with a buy-to-fly ratio of 6:1. The study demonstrated that a coordinate system can be translated effectively in hybrid manufacturing by designing part features informed by both AM and wire-EDM processes.
Non-Smooth Dynamics of Tapping Mode Atomic Force Microscopy
Authors: Belardinelli Pierpaolo , Chandrashekar Abhilash , Alijani Farbod , Lenci Stefano 
Published: March 2023

Abstract
This study examines the nonlinear dynamics in tapping-mode atomic force microscopy (AFM) with tip-surface interactions that include van der Waals and Derjaguin-Müller-Toporov contact forces. We investigate the periodic solutions of the hybrid system by performing numerical pseudo-arclength continuation. Through the use of bifurcation locus maps in the set of parameters of the discontinuous model, the overall dynamical response scenario is assessed. We demonstrate the influence of various dissipation mechanisms that are related with the AFM touching or lacking contact with the sample. Local and global analyses are used to investigate the stability of the stable solution in the repulsive regime. The impacting nonsmooth dynamics framed within a higher-mode Galerkin discretization is able to capture windows of irregular and complex motion.
Harmonic Method for Simulating Unsteady Multispool Interactions
Authors: Wang Feng , di Mare Luca 
Published: March 2023

Abstract
Modern civil jet engines arrange components on spools with different rotational speeds in order to improve compressor stall margin, overall engine performance, etc. The unsteady interactions among these components can be significant and should be considered at an early design stage if possible. Unsteady Reynolds-averaged Navier–Stokes (URANS) is a common approach to simulate these unsteady effects, but the disparity in time scales in a multispool simulation can lead to expensive URANS simulations. Harmonic methods are effective and efficient approaches to simulate unsteady interactions among turbomachinery components, but their applications to multispool simulations remain a challenge. The objective of this paper is to address this challenge. This paper extends the Favre-averaged non-linear harmonic method to simulate multispool turbomachinery components using a unified bladerow interface which transfers disturbances through bladerows with arbitrary blade counts at any rotational speed. The regularization of non-reflective boundary condition is described for certain circumferential wave number of the zero-frequency mode. The capability of the proposed approach is demonstrated by simulating the transfer of hot streaks through full 3D high- and intermediate-pressure turbines in a three-shaft engine. The temperature distributions from the harmonic method show good agreement with direct unsteady simulation in terms of the mean flow and the instantaneous flow. The radial migration of the hot streaks towards the hub are captured very well by the proposed harmonic method. The required wall-clock time of the harmonic method is roughly 240 times smaller than the whole annulus URANS simulation. This demonstrates that the proposed method can be an efficient design tool to trace hot streaks in multispool turbines at the early design stage.
Development of One-Part Rock-Based Geopolymers for Downhole Cementing Applications
Authors: Omran Mohamed , Khalifeh Mahmoud 
Published: March 2023

AbstractThe use of geopolymers as a full replacement for cement in oil well cementing applications requires the development of not only environmentally friendly but also user-friendly cementitious materials. This study aims to investigate the early-age mechanical and chemical properties of synthesized one-part geopolymers, which are heat-cured rock-based products. These geopolymers were synthesized from granite-based precursors and were activated by solid powders of potassium silicate, with a small portion of potassium hydroxide (KOH) as an accelerator to enhance the setting time and early strength. The mechanical and chemical properties of the one-part geopolymers were characterized, and the mineralogy of the solidified samples was analyzed through crystallography to better understand their microstructure. The study found that the investigated one-part geopolymer mixes, which were activated by a solid activator with a modulus ratio of 2.4, developed acceptable compressive strength of around 7 to 13 MPa within 24 h and up to 7 days. The use of one-part geopolymers has the potential to provide environmentally- and user-friendly slurries that can facilitate their utilization for large-scale in-situ applications in the petroleum and civil engineering sectors.
Experimental Study on the Effect of Off-Sized Rollers on the Dynamic Load Distribution in a Cylindrical Roller Bearing
Authors: Hou Yu , Wang Xi , Li Xingyu , Guo Rubing , Li Junqiang , Li Qiang 
Published: March 2023

Abstract
The differences in the roller diameters within a roller bearing are unavoidable in practice, which is known as the off-sized effect. The off-sized effect results in the dynamic variation of the load distribution in bearings and further the abnormal vibration and premature failure of bearings. This paper experimentally investigates the effect of off-sized rollers on the dynamic load distribution in a cylindrical roller bearing. Different configurations of off-sized rollers are given considering the oversized and undersized roller conditions, and the number and position of off-sized rollers. The real-time roller-raceway contact loads distributed in the bearing are measured under these test cases. The results show that a single off-sized roller leads to the loading change directly on itself and further the load rebalances among the adjacent rollers. Under the conditions of multiple off-sized rollers, a stack effect of the competition rule of roller loading dominates the variation range of the dynamic load distribution. As results of the stack effect, among all roller configurations, the configuration of multiple off-sized rollers adjacent to each other leads to the minimum range of the dynamic load distribution, while the configuration of two off-sized rollers separated by a regular roller leads to the maximum one.
Contactless Evaluation of Stress in Anisotropic Metallic Plates Using Nonlinear Electromagnetic Acoustic Resonance Technique
Authors: Li Weibin , Hu Yi , Shi Tianze , Deng Mingxi 
Published: March 2023

AbstractIn this paper, a contactless nonlinear acoustic method is developed for the evaluation of stress states in anisotropic metallic plates by a combination of electromagnetic acoustic resonance (EMAR) technique and higher harmonic generation. Electromagnetic transducers (EMATs) designed and applied for exciting and receiving ultrasonic signals can maintain the coupling condition consistently on the measure of higher harmonics generated. EMAR provides a sufficient magnitude of signals for higher harmonics generated. In addition, the conventional EMAR technique based on the measurement of shear-wave velocity and attenuation within a certain frequency range is also carried out in the specimens. The effect of stress on the higher harmonic generation is explored and discussed. It is found that nonlinear parameters measured by the nonlinear EMAR method change significantly versus the increase of external tension stress loadings, whereas the variations of linear acoustic parameters measured are negligible. In addition, the obtained results clearly indicate that the variation of the measured acoustic nonlinear parameters versus external stresses is direction-depended in anisotropic materials. The contactless nonlinear acoustic technique combines the feature of EMAR with the merit of higher harmonic generation, providing an effective means for stress evaluation in weakly anisotropic materials with improved reliability and sensitivity over linear ones.