bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of cervical margin relocation on marginal adaptation and microleakage of indirect ceramic restorations
Authors: Adel Marwa , Hamdy Amina , Sabet Ahmed , Ebeid Kamal 
Published: April 2023

AbstractPurposeThis study evaluated the effect of cervical margin relocation (CMR) with two different materials and contamination with hemostatic agents on the margin adaptation and microleakage of ceramic restorations.Materials and methodsMesial–occlusal–distal cavities were prepared in 60 human first molars and distributed to 3 groups (n = 20) according to the margin relocation procedure. The groups were: group F; flowable composite applied in two 2 mm increments, group B; bulk‐fill flowable composite applied as a bulk increment of 4 mm thickness and group C (control); no CMR was done. Each group was subdivided into two subgroups (subgroup N; no hemostatic agent applied and subgroup H; hemostatic agent was applied). In all groups, ceramic inlays were prepared and cemented. The samples were subjected to thermocycling (10,000 cycles). The adaptation of the cervical margin was evaluated with scanning electron microscopy (200×). Samples were then assessed for microleakage analysis with the dye penetration method. Marginal adaptation data were normally distributed and analyzed using two‐way ANOVA followed by Tukey's post hoc test. Ordinal microleakage score data were analyzed using cumulative link models followed by the analysis of deviance using Wald chi‐square tests.ResultsBoth CMR and contamination with a hemostatic agent had significant effects on the margin adaptation of the cervical margin. Group C showed the highest adaptation with no significant difference from group F. The lowest adaptation was revealed in group B with a significant difference from group C. Subgroup N (in all groups) showed a statistically higher adaptation than subgroup H. Regarding microleakage assessment, CMR had no significant effect but hemostatic agent application showed a significantly higher microleakage score for all groups.ConclusionsBoth the CMR procedure and contamination with AlCl3 hemostatic agent had a negative effect on marginal adaptation. For microleakage assessment, only contamination with hemostatic agent negatively affected the microleakage with no effect on the margin relocation procedure.
Alteration in the sowing time as an effective cultural management practice against kernel smut of rice
Authors: Sharma Anju B. , Singh Navdeep , Singh Tarvinder Pal 
Published: April 2023

AbstractKernel smut of rice caused by Tilletia barclayana (Bref.) Sacc. and Syd., becomes a serious disease for seed production of rice under favourable environmental conditions. The disease has been listed as objectionable disease under the Indian Minimum Seed Certification Standards. In this study, effort has been made to generate information on the most suitable time of sowing of rice in relation to minimum disease parameters of kernel smut. Ten rice cultivars viz., PR 111, PR 114, PR 116, PR 118, PR 121, PR 122, PR 124, PR 126, PR 127 and PAU 201 were sown on three different dates of sowing (28 May; 10 June; and 24 June) at an interval of 14 days during the crop season 2019 and 2020 under natural epiphytotic conditions for disease development so as to focus on the most crucial time of disease development under natural field conditions. There was a gradual decrease in disease parameters of kernel smut with delayed sowing in case of all cultivars under study except variety PR 111. Coefficient of infection reduced uniformly with the delay in sowing time in different cultivars during the two consecutive crop seasons in all the test cultivars. Test weight (1000 grain weight) of rice did not vary significantly in response to alteration in sowing time indicating no adverse effect of late planting on the seed quality.
Fluctuations and trends in spatio‐temporal patterns of plant species and diversity in a sandy pasture
Authors: Fóti Szilvia , Bartha Sándor , Balogh János , Pintér Krisztina , Koncz Péter , Biró Marianna , Süle Gabriella , Petrás Dóra , De Luca Giulia , Mészáros Ádám , Zimmermann Zita , Szabó Gábor , Csathó András István , Ladányi Márta , Péli Evelin Ramóna , Nagy Zoltán 
Published: April 2023

AbstractAimsThe relative importance of species within an ecosystem shows spatio‐temporal variability related to both the terrain features and numerous rapidly changing factors. Accordingly, functional and species patterns may show some level of persistence, or, due to various disturbances, fluctuations. Communities with high species richness were found to maintain a higher degree of stability than species‐poor or perturbed vegetations; however, diversity and its stability may be spatio‐temporally variable. Based on these considerations, our aim was to assess the responses of a sandy pasture, both species‐wise and at the community level, to the relatively invariant habitat, and to the more rapidly changing environmental conditions.LocationHungary.MethodsWe surveyed the vegetation in an area of about 1 ha by means of high‐resolution spatio‐temporal sampling: we recorded the surface aerial cover (%) of the plant species during 15 campaigns covering spring, summer and autumn aspects for seven years (2013–2019) in 80 × 60 m grids. The biological activity of the ecosystem (above‐ground biomass, soil respiration) was also followed up together with the environmental limiting factors.ResultsDuring the study period, which was characterized by significant warming, the grassland showed a balanced physiological performance with year‐to‐year variability. Fluctuating differentiation of the plant species with different environmental optima along with the terrain attributes was assumed to be responsible for this balanced physiological performance. Although community‐level diversity remained stable, some species favoring cooler, wetter positions disappeared.ConclusionsTerrain features of the study area within 1.5 m or less elevation differences created considerably heterogeneous conditions for a high number (114) of plant species with different ecological needs to co‐occur. The stability of the diversity was found to show terrain relatedness, that is spatial as well as temporal patterns compared to the null model of spatio‐temporal independence, and the ecosystem functions followed these patterns.
A review of influencing factors on a recirculating aquaculture system: Environmental conditions, feeding strategies, and disinfection methods
Authors: Li Hao , Cui Zhengguo , Cui Hongwu , Bai Ying , Yin Zhendong , Qu Keming 
Published: April 2023

AbstractRecirculating aquaculture system (RAS), as a modern highly intensive aquaculture mode, demonstrates the advantages of environmental friendliness, high efficiency and sustainable development, and has been widely used worldwide; they are also expected to be more widely applied in industrial aquaculture in the future as our natural resources are decreasing. However, RAS imposes very high requirements on operating conditions, including temperature, salinity, dissolved oxygen, pH, stocking density, light, feed composition, feeding amount, feeding frequency, and disinfection methods. Each factor is critical to the stable operation of the system. Therefore, to ensure the efficient and stable operation of RAS, its influencing factors must be controlled to within appropriate ranges. Herein, the factors affecting the operation of RAS are reviewed, and the mechanisms of their influence on the reared organisms are revealed, and suggestions on the control of these factors in aquaculture are proposed. This review can provide a theoretical basis for the further development of RAS.
Patterns of load distribution among the legs in small water striders during standing and striding
Authors: Meshkani J. , Rajabi H. , Kovalev A. , Gorb S. N. 
Published: April 2023

AbstractWater striders (Gerris argentatus) move across the water surface by taking advantage of the surface tension, which supports their bodyweight without breaking. During locomotion, the midlegs are primarily responsible for generating thrust, whereas the other legs support the body. Although the aspects of standing and locomotion on the water surface are well understood, relatively fewer studies concerned the coordinated biomechanical movements of the legs. In order to maintain buoyancy of the body on the water surface, the leg positions must be adjusted to distribute the bodyweight appropriately. The present study investigates distribution of the bodyweight on the legs in relatively small water striders. We aimed to understand how loading on the legs changes during sculling that leads to sliding of the body on the water surface. The assistance of all legs at every moment enables the body to maintain its floating during standing and striding. Water striders can achieve a gentle striding through the midlegs driving phase in association with smooth load shifting among their legs, which are positioned in a specific configuration to support the insect on the water surface.
A Meta‐Analysis of Interventions to Improve Reading Comprehension Outcomes for Adolescents with Reading Difficulties
Authors: Sohn Hyojong , Acosta Kelly , Brownell Mary T. , Gage Nicholas A. , Tompson Eilish , Pudvah Carolyn 
Published: April 2023

AbstractThis meta‐analysis synthesized 97 effect sizes extracted from 37 intervention studies for students with reading difficulties (RDs) in Grades 6 to 12 published between 1982 and 2021 to identify the overall impact of reading interventions and the moderating effects of intervention characteristics and study design characteristics. Random‐effects robust variance estimation (RVE) was used to account for dependencies within studies. Overall, interventions designed to improve reading comprehension outcomes for adolescents with RDs were effective (g = 0.63). Meta‐regression analyses identified several significant moderators that were associated with intervention efficacy, such as text content, duration of intervention, agent of intervention, status of student, type of dependent measure, and study quality. We provide study limitations as well as implications for research and practice.
Towards a critical translanguaging biliteracy pedagogy: the ‘aha moment’ stories of two Mandarin Chinese teachers in Canada
Authors: Jin Jing , Liu Yina 
Published: April 2023

AbstractLearning Mandarin Chinese as a heritage or additional language at Chinese complementary schools has long been a tradition for many Asian Canadians. However, research that looks at teachers' experiences and perceptions in Canadian settings, especially the power dynamics embedded in biliteracy development at complementary schools, is scant. Moreover, the COVID‐19 pandemic brought challenges and opportunities to Chinese complementary schools. In this paper, we, as two Mandarin teachers and literacy researchers, used collaborative autobiographical narrative inquiry to tell our stories to unfold (1) how power dynamics regarding biliteracy/multiliteracy were enacted and reflected in a Chinese complementary school during the pandemic and (2) our re‐understanding of Mandarin teaching and learning from critical literacy and translanguaging perspectives. Although the pandemic is over, racial discrimination and social inequity continue to remain in our lives. By analysing our teaching moments and reflections, we hope this study could provide some insights into how critical literacy and translanguaging can be integrated into language and literacy education in multilingual and multimodal settings in the pandemic and post‐pandemic contexts.
Exploring phonetic predictors of intelligibility, comprehensibility, and foreign accent in L2 Spanish speech
Authors: Nagle Charlie L. , Huensch Amanda , Zárate–Sández Germán 
Published: April 2023

AbstractAlthough current approaches to second language (L2) pronunciation underscore that instruction should concentrate on pronunciation features that help learners be more intelligible (and not necessarily more native like), there is little empirical evidence as to what those features are, especially in languages other than English. To address this gap, this exploratory study examined phonetic predictors of listener‐based dimensions—namely, intelligibility, comprehensibility, and foreign accent—in L2 Spanish speech. Samples were taken from 42 Spanish learners of varying proficiency while performing a picture description task, rated for global measures by 80 native Spanish listeners, coded for phonemic errors, and analyzed phonetically for pronunciation features that previous research has reported as challenging for English‐speaking learners. Mixed‐effects models were fit to the data to examine relationships between the phonetic features and the listener‐based dimensions. Results revealed that rising intonation and diphthongization of word‐final /o/ predicted intelligibility, rising intonation predicted comprehensibility, and a variety of features were associated with foreign accent. Overall, results confirmed that non‐target‐like production of L2 pronunciation, including areas known to be challenging for Spanish learners, does not necessarily lead to intelligibility and comprehensibility issues. Based on these findings, we make recommendations regarding what features should be prioritized in L2 pronunciation instruction.
Styles of regulatory discretion: A comparative analysis of the British and Israeli education legislation
Authors: Kosti Nir 
Published: April 2023

AbstractRegulatory discretion is a central theme in the study of regulation and governance. However, little attention has been paid to the question of how countries vary in the way they design regulatory discretion. This article fills this gap by conceptualizing styles of regulatory discretion according to a novel conceptual framework that distinguishes between three dimensions of regulatory discretion: obligation, content, and procedure. Empirically, the article compares regulatory discretion in British and Israeli education legislation during the period 1948–2020. The findings reveal substantial differences in regulatory discretion styles between the two countries across all three dimensions of regulatory discretion. Accordingly, this article proposes several links between regulatory discretion and regulatory production that can be explored further. In doing this, the article points to the relationship between discretion practices and regulatory outcomes.
Interdependence between climate change and migration: Does agriculture, geography, and development level matter in sub‐Saharan Africa?
Authors: Bannor Frank , Magambo Isaiah Hubert , Mahabir Jugal , Tshitaka Jeanluc Mubenga 
Published: April 2023

AbstractConcerns about the human effects of climate change have contributed to forecasts of how populations in drought‐prone and flood‐prone areas would respond to these events. Empirical studies have predicted that human migration has been among the critical resilient strategy in responding to the impact of climate change. To obtain a more comprehensive understanding of the climate–migration relationship, the impacts of climate change on international migration flows from sub‐Saharan Africa nations to South Africa are investigated empirically in this paper. The study employed static and dynamic models and panel data from 35 countries in sub‐Saharan Africa, spanning 1990 to 2017. The findings are as follows: (1) The analysis shows that historical temperature has a positive and statistically significant effect on outmigration in agriculture‐dependent nations. (2) The analysis shows that agricultural value added as a share in gross domestic product has a negative and statistically significant effect on outmigration in agriculture‐dependent nations. (3) The results also show that geographic location and development level of a country, in addition to dependency on agriculture, are key factors in the climate change–international migration nexus. Policy implications are discussed.
What is the best model of grit among junior high students: Model selection, measurement invariance, and group difference
Authors: Weng Min‐Chieh , Liao Chen‐Hsuan , Kwok Oi‐Man , Wu Jiun‐Yu 
Published: April 2023

AbstractGrit is a non‐cognitive construct based on personality theory that fosters individuals to perform better and achieve their goals. Previous researchers validated the psychometric properties of grit for adults and older adolescents but ignored that for early adolescents. An inappropriate measurement model may mislead researchers and teachers to misapprehend grit measures. This study aimed to identify the most appropriate grit model for early adolescents. Three factorial models (i.e., two‐factor, one‐factor, and bi‐factor models) were evaluated and compared. Subsequently, we tested the measurement invariance (MI) and mean differences of grit across grade and gender groups. Participants were 672 junior high students (51% boys, aged 12–15) in Taiwan. The results showed that the two‐factor model was the best grit model. This finding revealed that adolescents tend to comprehend grit with two distinct concepts, consistency in interest (CI) and perseverance of effort (PE), instead of a single compound. In addition, the results showed that the two‐factor model retained strong invariance for grade and gender, justifying the comparison of grit scores over grade and gender groups for junior high students. Moreover, we did not find any group difference in the facets of grit by gender and grades. This result showed that grit is a stable personality for junior high students. The relationships between grit constructs and criteria, such as conscientiousness and academic achievements, were tested and discussed.
Lymphotropic nanoparticle magnetic resonance imaging for diagnosing metastatic lymph nodes in dogs with malignant head and neck tumours
Authors: Griffin Lynn R. , Frank Chad , Rao Sangeeta , Seguin Bernard 
Published: April 2023

AbstractLymphotropic nanoparticle magnetic resonance imaging (LNMRI) utilises ultrasmall paramagnetic iron nanoparticles (USPIOs) for imaging of metastatic lymph nodes in patients afflicted with cancer. LNMRI has been shown to be a highly effective and accurate way to diagnose metastasis in humans but has not been commonly reported on in veterinary medicine. USPIOs are phagocytised by macrophages and then localised to lymph nodes where they create a susceptibility artefact on gradient echo MRI sequences. In this study dogs (n = 24) with naturally occurring head and neck tumours were imaged with LNMRI then had mandibular and retropharyngeal lymph nodes extirpated for histological analysis. Subjective and objective analysis of the LNMRI images was performed and imaging results compared to histology as the gold standard. A total of 149 lymph nodes were included in this study. The overall sensitivity, specificity and accuracy was 64%, 94.4% and 89.3% respectively. However, if dogs with mast cell tumours were excluded from analysis the sensitivity, specificity and accuracy rose to 85.7%, 95.7% and 94.6%. LNMRI is potentially an accurate way to determine the presence of lymph node metastasis in dogs with some types of head and neck tumours. However, LNMRI has only moderate accuracy in dogs with oral or mucocutaneous mast cell tumours in this region.
Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency Versus Time Domain Methods
Authors: Berthold Christian , Gross Johann , Frey Christian , Krack Malte 
Published: April 2023

Abstract
To save resources and reduce emissions, it is crucial to reduce weight of aircraft engines and further increase aerodynamic efficiency of gas and steam turbines. For turbine blades, these goals often lead to flutter. Thus, innovative flutter-tolerant designs are explored, where flutter induces limit cycle oscillations (LCOs) of tolerable yet nonzero levels. Flutter represents a self-excitation mechanism and, in the linear case, would lead to exponential divergence. Flutter-induced LCOs are therefore an inherently nonlinear phenomenon. The saturation of flutter-induced vibrations can be caused by nonlinear frictional contact interactions, e.g., in tip shroud interfaces. To develop flutter-tolerant designs, efficient methods are required which compute LCOs based on an appropriate modeling of elastic, inertia, aerodynamic, and contact forces. We recently developed a Frequency Domain Fluid-Structure Interaction (FD-FSI) solver for flutter-induced LCOs. The solver relies on the Harmonic Balance method applied to the structure as well as the fluid domain. It was shown that especially for long and slender blades with friction in shroud interfaces and strong aerodynamic influence, a coupled analysis can significantly increase the accuracy of predicted LCOs compared to the current state-of-the-art methods. Conventional methods do not properly account for the nonlinear change of frequency and deflection shape, and the effect of these changes on the aerodynamic damping, and thus fail in predicting certain LCOs at all. In the current work, the FD-FSI solver is numerically validated against Time Domain Fluid-Structure Interaction (TD-FSI) simulations. As a test case, a shrouded low-pressure turbine with friction in the shroud interfaces is considered. The point of operation is highly loaded and transonic in order to make the test case challenging. Apart from a successful validation of the FD-FSI solver, we shed light on important advantages and disadvantages of both solvers. Due to the lack of robust phase-lag boundary conditions for time domain solvers, a full blade row must be simulated. Thus, the FD-FSI solver typically requires only a fraction of the computational costs. Moreover, the FD-FSI solver contributes to an increased physical understanding of the coupled vibrations: By analyzing the contribution of individual harmonics, we analyze why unexpected even harmonics appear in a certain LCO. On the other hand, the FD-FSI solver does not provide information on the asymptotic stability of the LCOs and is strictly limited to periodic oscillations. Indeed, quasi-periodic limit torus oscillations (LTOs) appear in our test case. Using the TD-FSI solver, we confirm the internal combination resonance, postulated recently as necessary condition for LTOs, for the first time, in a fully coupled analysis.
Physical-Performance Changes Over the Season: Are They Related to Game-Performance Indicators in Elite Men Volleyball Players?
Authors: García-de-Alcaraz Antonio , Díez-Fernández David M. , Baena-Raya Andrés 
Published: April 2023

Background: The development and influence of physical capabilities and game action performance over the course of the season are a big challenge for coaches and players. Purpose: The aims of the present study were to examine (1) the seasonal changes in the physical capabilities (mechanical and kinematic) and game-performance indicators in top-level men volleyball players and (2) the relationship between these physical capabilities and game-performance indicators in official matches. Methods: Eleven top-level players participated. Players were physically tested 3 times during the season. Before each test, players’ match performance (11 sets) was analyzed according to the level of opposition and match location. The percentage of change, statistical differences over the season (Friedman and Wilcoxon tests), and associations between variables (Spearman r) were calculated (P < .05) among mechanical (force–velocity profile during vertical jump and bench press), kinematic (jump height and spike ball speed), and game action performance features (coefficient, efficacy, and percentage of errors in serve, attack, and block). Results: The theoretical maximal force and velocity during vertical jump and bench press, respectively; the peak spike ball speed; and the serve efficacy significantly increased over the season. Moreover, there was a significant reduction in serve errors as the jump height increased (r = −.44; P = .026), as well as a significant increase in serve errors as the peak spike ball speed increased (r = −.62; P = .001). Conclusion: These findings reveal how the physical and game action performance variables evolve and interact during the season. This may help coaches and trainers to monitor and analyze the most relevant volleyball performance factors.