bluuebunny/crossref_metadata_2025_split huggingface dataset:
On $$[H^{1}]^{3 \times 3}$$, $$[H(\text {curl})]^3$$ and $$H(\text {sym Curl})$$ finite elements for matrix-valued Curl problems
Authors: Sky Adam , Muench Ingo , Neff Patrizio 
Published: September 2022

AbstractIn this work we test the numerical behaviour of matrix-valued fields approximated by finite element subspaces of $$[{{\,\mathrm{\textit{H}^1}\,}}]^{3\times 3}$$

[

H
1

]

3
×
3

, $$[ H (\textrm{curl}{})]^3$$

[
H

(
curl

)

]

3

and $$ H (\textrm{sym}\, \textrm{Curl}{})$$

H
(
sym

Curl

)

for a linear abstract variational problem connected to the relaxed micromorphic model. The formulation of the corresponding finite elements is introduced, followed by numerical benchmarks and our conclusions. The relaxed micromorphic continuum model reduces the continuity assumptions of the classical micromorphic model by replacing the full gradient of the microdistortion in the free energy functional with the Curl. This results in a larger solution space for the microdistortion, namely $$[ H (\textrm{curl}{})]^3$$

[
H

(
curl

)

]

3

in place of the classical $$[{{\,\mathrm{\textit{H}^1}\,}}]^{3 \times 3}$$

[

H
1

]

3
×
3

. The continuity conditions on the microdistortion can be further weakened by taking only the symmetric part of the Curl. As shown in recent works, the new appropriate space for the microdistortion is then $$ H (\textrm{sym}\, \textrm{Curl}{})$$

H
(
sym

Curl

)

. The newly introduced space gives rise to a new differential complex for the relaxed micromorphic continuum theory.
Review of the NRC Canada Studies on Fire Resistance of Walls: Results, Research Gaps and Design Guidelines
Authors: Sultan Mohamed A. 
Published: September 2022

AbstractThe National research council Canada conducted three major fire resistance studies on the interior party walls, interior fire separation walls and exterior walls. The fire resistance results of these studies were published over the past three decades and the publications were short in suggesting design guidelines for practioners’ use and gaps for future research. This paper summaries the fire resistance results of 35 full-scale wall tests, suggests design guidelines and identifies future research gaps for interior party walls, interior fire separation walls and exterior walls. The result summary includes the effect of different design parameters on the fire resistance performance of wall assemblies such as the stud type and spacing, number of stud rows, number of gypsum board layers and thickness, mid-height blocking, resilient channels installation and spacing, screws spacing for attaching gypsum board to either wall faming or resilient channels, insulation type and exterior wall sheathing type on the fire resistance of loadbearing and non-loadbearing wall assemblies. The summary results was used as the basis for suggesting design guidelines for practioners’ use and identifying gaps for future research to improve the fire resistance performance of wall assemblies. For example, the use of a reduced screw spacing from 406 mm o.c. to 203 mm o.c. in the gypsum board field and from 406 mm o.c. to 150 mm o.c. at the board joints was suggested for future research to keep the protective gypsum board layer attached to studs or resilient channels longer for a better fire resistance performance of wall assemblies. Also, fire resistance design guidelines are suggested, for examples, the use of rock fibre insulation for non-load bearing interior party walls to achieve 1.5-h fire resistance, the use of cellulose fibre insulation for loadbearing fire separation walls to achieve 2-h fire resistance rating and the use of reduced screw spacing in attaching the gypsum board to wall framing from 406 mm o.c. to 203 mm o.c. for loadbearing exterior wall assembly with gypsum board glass mat sheathing to expand the fire resistance rating from non-useful 30-min to a useful code compliance 45-min fire resistance rating assembly. Additional suggested examples for future research gaps and design guidelines are also provided.
Do couples bunch more? Evidence from partnered and single taxpayers
Authors: Alinaghi Nazila , Creedy John , Gemmell Norman 
Published: September 2022

AbstractRecent papers hypothesise that estimates of the elasticity of taxable income (ETI) for individuals may be underestimated where those individuals are taxed separately but are part of a couple. This paper investigates that issue by applying the ‘bunching at tax kinks’ approach to estimate separate ETIs for partnered and single individuals. It shows that there are opportunities for, and constraints on, bunching specific to partnered individuals. Using administrative taxable income data for the New Zealand taxpayer population over the period, 2000 to 2017, taxpayers are matched to their partners using population census data. Results strongly support the hypotheses that ETIs are larger for partnered, than for single, individuals, and where both partners are located in the same income tax bracket. Couples where one (and especially where two) partners are self-employed reveal particularly large elasticities.
Evaluation of a School-Based Headsprout Intervention for Improving Literacy
Authors: McWilliams Gerry , Leslie Julian C. , McDowell Claire 
Published: September 2022

AbstractHeadsprout Early Reading is a computer-based program designed on behavioral principles to enhance the basic skills that underpin the initial development of reading. In a within and between groups design, and using primary schools within Northern Ireland that had a currently high proportion of disadvantaged pupils, children who were behind their peers in progress with reading were randomly allocated to an intervention group (n = 79), where the target was to work through 80 reading training episodes within a school year, or a teaching as usual group (n = 44). Reading skills were assessed in all children before, at the midpoint, and after the intervention using a flashcard-based phonics identification test with three levels of difficulty, and before and after intervention using a standardized reading assessment, which generated a sentence reading age and a phonics reading age. Both groups showed increased scores on all measures over the 6 months of the study, but the intervention group showed markedly greater improvement. Importantly, the mean scores on sentence reading age and phonics reading age for the intervention group increased by over 17 months and 12.1 months, respectively, as opposed to 7.6 months and 7.8 months with the control group. These findings also validated the use of the flashcard-based phonics identification test with this population. This study indicates that widespread use of Headsprout Early Reading in mainstream education could be highly effective.
Less Restrictive Behavioral Interventions for Sleep Problems in Children with Neurodevelopmental Disorders: A Single Case Feasibility Study
Authors: Woodford Emma C. , McLay Laurie , Blampied Neville M. , France Karyn G. , Gibbs Rosina , Whitaker Charis , McCaughan Emma 
Published: September 2022

AbstractSleep problems are prevalent among autistic children and children with Rare Genetic Neurodevelopmental Disorders (RGND). Behavioral interventions are commonly used to treat sleep problems, with most involving extinction. While effective, the occurrence of a response burst (i.e., temporary worsening of the behavior) can result in a temporary increase in parent and child distress, and negatively affect treatment adherence. Thus, it is important to develop less restrictive treatment options. This study used a single case multiple baseline design to investigate the effectiveness and acceptability of less restrictive behavioral interventions (i.e., specifically excluding extinction) for sleep problems in ten autistic children and children with RGND (M = 7.3 years). Results demonstrated a reduction in sleep disturbance including unwanted bed-sharing, night wakings and sleep onset delay for 3/3, 5/5 and 6/7 children respectively, which were maintained at follow-up. Interventions were rated favorably by parents. The clinical implications of these findings are discussed.
Does Consulting an Occupational Medicine Specialist Decrease Time to Return to Work Among Total Knee Arthroplasty Patients? A 12-Month Prospective Multicenter Cohort Study
Authors: van Zaanen Y. , Kievit A. J. , van Geenen R. C. I. , Pahlplatz T. M. J. , Hoozemans M. J. M. , Blankevoort L. , Schafroth M. U. , Haverkamp D. , Vervest T. M. J. S. , Das D. H. P. W. , Scholtes V. A. , van der Beek A. J. , Kuijer P. P. F. M. 
Published: September 2022

Abstract
Purpose
The aim of this study is to investigate whether total knee arthroplasty (TKA) patients who consulted an occupational medicine specialist (OMS) within 3 months after surgery, return to work (RTW) earlier than patients who did not consult an OMS.

Methods
A multi-center prospective cohort study was performed among working TKA patients, aged 18 to 65 years and intending to RTW. Time to RTW was analyzed using Kaplan Meier and Mann Whitney U (MWU), and multiple linear regression analysis was used to adjust for effect modification and confounding.

Results
One hundred and eighty-two (182) patients were included with a median age of 59 years [IQR 54–62], including 95 women (52%). Patients who consulted an OMS were less often self-employed but did not differ on other patient and work-related characteristics. TKA patients who consulted an OMS returned to work later than those who did not (median 78 versus 62 days, MWU p < 0.01). The effect of consulting an OMS on time to RTW was modified by patients’ expectations in linear regression analysis (p = 0.05). A median decrease in time of 24 days was found in TKA patients with preoperative high expectations not consulting an OMS (p = 0.03), not in patients with low expectations.

Conclusions
Consulting an OMS within 3 months after surgery did not result in a decrease in time to RTW in TKA patients. TKA patients with high expectations did RTW earlier without consulting an OMS. Intervention studies on how OMSs can positively influence a timely RTW, incorporating patients’ preoperative expectations, are needed.
Image fusion for neutron tomography of nuclear fuel
Authors: Chuirazzi William , Kane Joshua , Craft Aaron , Schulthess Jason 
Published: September 2022

AbstractImage fusion, the process of combining different images together, can be useful to create a more complete picture. In this work, image fusion is applied to neutron tomography of nuclear fuel with the goal of enhancing the information obtained about the fuel. Different reconstruction methods, such as Feldkamp, Davis and Kress filtered back projection and Simultaneous Reconstruction Technique, were combined to enhance image quality. This methodology was shown to reduce noise and ring artifacts without sacrificing sharp edges, allowing for a more accurate representation of sample geometry. Technique enhancements and future applications for the neutron imaging community are also discussed.
Representation learning for clustering via building consensus
Authors: Deshmukh Aniket Anand , Regatti Jayanth Reddy , Manavoglu Eren , Dogan Urun 
Published: September 2022

AbstractIn this paper, we focus on unsupervised representation learning for clustering of images. Recent advances in deep clustering and unsupervised representation learning are based on the idea that different views of an input image (generated through data augmentation techniques) must be close in the representation space (exemplar consistency), and/or similar images must have similar cluster assignments (population consistency). We define an additional notion of consistency,consensus consistency, which ensures that representations are learned to induce similar partitions for variations in the representation space, different clustering algorithms or different initializations of a single clustering algorithm. We define a clustering loss by executing variations in the representation space and seamlessly integrate all three consistencies (consensus, exemplar and population) into an end-to-end learning framework. The proposed algorithm, consensus clustering using unsupervised representation learning (ConCURL), improves upon the clustering performance of state-of-the-art methods on four out of five image datasets. Furthermore, we extend the evaluation procedure for clustering to reflect the challenges encountered in real-world clustering tasks, such as maintaining clustering performance in cases with distribution shifts. We also perform a detailed ablation study for a deeper understanding of the proposed algorithm. The code and the trained models are available athttps://github.com/JayanthRR/ConCURL_NCE.
Co-designed mini-games for children with visual impairment: a pilot study on their usability
Authors: Battistin Tiziana , Dalla Pozza Nadir , Trentin Silvia , Volpin Giovanni , Franceschini Andrea , Rodà Antonio 
Published: September 2022

AbstractDigital games aimed at improving cognitive and/or motor-sensory skills need to be carefully designed to take into account the characteristics and needs of particular categories of users. Several novel mini-games explicitly aimed at children with visual impairment (VI) were co-designed by a multidisciplinary team which involved computer engineers and a therapy team from the Robert Hollman Foundation (Padova, Italy). These games are played by children moving within a large-scale interactive environment – i.e., a floor portion placed under a motion capture system capable of tracking one or more people – with the game linking the players movements to the audio and visual output to produce meaningful interactions. We report on a pilot study of the usability of the system involving 11 children with VI. The results allowed us to improve the system and to define a set of guidelines useful for designers and developers of similar systems.
An efficient analytical approach to assess root cause of nonlinear electric vehicle gear whine
Authors: Mughal Hamza , Sivayogan Gajarajan , Dolatabadi Nader , Rahmani Ramin 
Published: September 2022

AbstractNoise, vibration, and harshness (NVH) issues pose considerable challenges for electric vehicle powertrain engineers. Gear vibrations generate an intrusive gear whine noise, with significant impact on the sound quality of electric powertrains. Dynamic transmission error (DTE) is the most quantitative indicator for gear NVH. Backlash, time variable meshing stiffness and damping contribute to DTE. Hence, a better understanding of these excitation sources is essential. A gear tribodynamics model is developed using potential energy method to estimate time variable meshing stiffness (TVMS). A fully analytical time-efficient model is proposed for lubricated contact stiffness based on transitions in the regimes of lubrication. The model accounts for the combined effects of surface elasticity and lubricant stiffness. Film thickness and damping coefficients are transiently updated at each instant during meshing cycle. The predictions from this model are compared with measured results from the literature and predicted results from Hertz contact model. The lubricated contact model successfully shows the contribution of the lubricant stiffness to TVMS and its variations with elasticity and viscosity parameters during meshing cycle. Gear harmonic and super-harmonic resonances are accurately estimated in terms of amplitude, frequencies and stiffness softening nonlinearities. Time history responses and phase-displacement diagrams show good agreement with the gear dynamics response at the main harmonic and second super-harmonic frequencies. The proposed model has a reasonable accuracy, significantly better than those from Hertzian contact models, and is considerably time efficient in comparison to numerical EHL solvers.
Design of a perfect-tracking soft-landing controller for electromagnetic switching devices
Authors: Ramirez-Laboreo Edgar , Moya-Lasheras Eduardo , Sagues Carlos 
Published: September 2022

AbstractElectromagnetic switching devices such as electromechanical relays and solenoid valves suffer from impacts and mechanical wear when they are activated using a constant-voltage policy. This paper presents a new control approach that aims at achieving soft landing in these devices, i.e., a movement without neither impacts nor bouncing. The hybrid nonlinear dynamics of the system is firstly described taking into account the limited range of motion that characterizes this class of devices. Then, the nonlinear expression of the control law is derived and a method to design a soft-landing reference trajectory is proposed. It is shown that, when certain conditions are met, the design methodology presented in the paper results in a controller that achieves perfect tracking of the reference trajectory and, hence, soft landing is accomplished. The theoretical analysis is validated by simulation using a dynamical model of a specific switching device.
A bifurcation of the peak: new patterns of traffic peaking during the COVID-19 era
Authors: Gao Yang , Levinson David 
Published: September 2022

AbstractThis paper analyzes the emergence of two well-defined peaks during the morning peak period in the traffic flow diurnal curve. It selects six California cities as research targets, and uses California employment and household travel survey data to explain how and why this phenomenon has risen during the pandemic. The final result explains that the double-humped phenomenon results from the change in the composition of commuters during the morning peak period after the outbreak.
Accounting for Context in Randomized Trials after Assignment
Authors: Brown C. Hendricks , Hedeker Donald , Gibbons Robert D. , Duan Naihua , Almirall Daniel , Gallo Carlos , Burnett-Zeigler Inger , Prado Guillermo , Young Sean D. , Valido Alberto , Wyman Peter A. 
Published: September 2022

Abstract
Many preventive trials randomize individuals to intervention condition which is then delivered in a group setting. Other trials randomize higher levels, say organizations, and then use learning collaboratives comprised of multiple organizations to support improved implementation or sustainment. Other trials randomize or expand existing social networks and use key opinion leaders to deliver interventions through these networks. We use the term contextually driven to refer generally to such trials (traditionally referred to as clustering, where groups are formed either pre-randomization or post-randomization — i.e., a cluster-randomized trial), as these groupings or networks provide fixed or time-varying contexts that matter both theoretically and practically in the delivery of interventions. While such contextually driven trials can provide efficient and effective ways to deliver and evaluate prevention programs, they all require analytical procedures that take appropriate account of non-independence, something not always appreciated. Published analyses of many prevention trials have failed to take this into account. We discuss different types of contextually driven designs and then show that even small amounts of non-independence can inflate actual Type I error rates. This inflation leads to rejecting the null hypotheses too often, and erroneously leading us to conclude that there are significant differences between interventions when they do not exist. We describe a procedure to account for non-independence in the important case of a two-arm trial that randomizes units of individuals or organizations in both arms and then provides the active treatment in one arm through groups formed after assignment. We provide sample code in multiple programming languages to guide the analyst, distinguish diverse contextually driven designs, and summarize implications for multiple audiences.
Legitimate Wealth? How Wealthy Business Owners are Portrayed in the Press
Authors: Waitkus Nora , Wallaschek Stefan 
Published: September 2022

AbstractGermany has one of the highest levels of wealth concentration of any Western capitalist country. Research on the legitimization of economic inequality highlights that wealth elites tend to stress meritocratic arguments for legitimizing elite positions and wealth accumulation. However, whether this is also the case for wealthy business owners and how the media tends to portray those remains largely unknown. Drawing on a unique sample of 899 press articles from eight different media outlets between 2014 and 2018, we find a rather generous media debate. Based on descriptive evidence and a latent class analysis, we identify six latent frames illustrating how wealthy business owners are portrayed in the press. We show that the sources of wealth (inheritance, investment, entrepreneurship) are often used to highlight these owners’ deep economic relevance to the German economy, while the use of wealth is predominantly framed as a mean for profit-seeking. For wealthy business owners, moral evaluation of personal conduct is less present in the media and, when it is present, is rarely negative. Our study is the first analysis of press coverage of the wealthiest German business owners indicating a legitimizing media debate of high wealth concentration in an advanced capitalist society.
The effect of a postbiotic produced by stabilized non-viable Lactobacilli on the health, growth performance, immunity, and gut status of colisepticaemic broiler chickens
Authors: Abd El-Ghany Wafaa A. , Fouad H. , Quesnell R. , Sakai L. 
Published: September 2022

AbstractThis work was designed to evaluate the efficacy of a postbiotic compound produced by stabilized non-viable Lactobacilli on the health, growth performance, immunity, and gut status against Escherichia coli (E. coli) challenge of broiler chickens. A total of 400, day-old broiler chicks were allocated into 4 equal groups (1–4) consisting of 100; each assigned into 2 equal replicates (50 each). Chickens in the 1st group were received the dry form of the compound at doses of 1 kg and 0.5 kg/ton feed for starter and grower, and the finisher diets, respectively. Chickens in the 2nd group were given the aqueous form of the compound in a dose of 4 mL/L of the drinking water during the first 3 days of life and at a day before and after each vaccination. Feed and water treatment regimens were administered to chickens in the 3rd group. Group 4 was kept without treatment. Each bird in the 1st, 2nd, 3rd, and 4th group was challenged with E. coli (O78) at 1-week-old. All groups were kept under observation till 5-week-old. Statistical analysis included one-way ANOVA and other methods as described with significant differences at P ≤ 0.05. The results indicated that feed and water treatments with the postbiotic compound induced more significant (P ≤ 0.05) amelioration of a disease picture, enhancement of growth performance, boosting of immune response, improvement of bursa of Fabricius/body weight ratio, and reduction of intestinal coliform count in challenged chickens when compared with challenged non-treated chickens. In conclusion, the postbiotic compound either in a dry and/or an aqueous form is recommended for improving the health, performance, and immunity of colisepticaemic broiler chickens.