bluuebunny/crossref_metadata_2025 huggingface dataset:
Properties of the Lateral Mesoscale Eddy-Induced Transport in a High-Resolution Ocean Model: Beyond the Flux–Gradient Relation
Authors: Lu Yueyang , Kamenkovich Igor , Berloff Pavel
Published: August 2022

Lateral mesoscale eddy-induced tracer transport is traditionally represented in coarse-resolution models by the flux–gradient relation. In its most complete form, the relation assumes the eddy tracer flux as a product of the large-scale tracer concentration gradient and an eddy transport coefficient tensor. However, several recent studies reported that the tensor has significant spatiotemporal complexity and is not uniquely defined, that is, it is sensitive to the tracer distributions and to the presence of nondivergent (“rotational”) components of the eddy flux. These issues could lead to significant biases in the representation of the eddy-induced transport. Using a high-resolution tracer model of the Gulf Stream region, we examine the diffusive and advective properties of lateral eddy-induced transport of dynamically passive tracers, reevaluate the utility of the flux–gradient relation, and propose an alternative approach based on modeling the local eddy forcing by a combination of diffusion and generalized eddy-induced advection. Mesoscale eddies are defined by a scale-based spatial filtering, which leads to the importance of new eddy-induced terms, including eddy-mean covariances in the eddy fluxes. The results show that the biases in representing these terms are noticeably reduced by the new approach. A series of targeted simulations in the high-resolution model further demonstrates that the approach outperforms the flux–gradient model in reproducing the stirring and dispersing effect of eddies. Our study indicates potential to upgrade the traditional flux–gradient relation for representing the eddy-induced tracer transport.
College Presidents’ Public Messaging During the COVID-19 Pandemic: An Analysis of Published Opinion Pieces as Crisis Communications
Authors: Natow Rebecca S.
Published: August 2022

During the Spring and Summer of 2020, college presidents across the United States undertook the difficult task of determining how best to respond to the COVID-19 crisis. An important aspect of leading through a crisis is messaging—that is, communicating about how the crisis is impacting one’s organization and how the needs of organizational constituents are being addressed. The purpose of this study was to analyze short opinion articles (op-eds) published by college presidents regarding higher education and the COVID-19 pandemic to understand how those publications functioned as public crisis communications. This study involved a content analysis of 40 op-eds that were authored or coauthored by college presidents between March and August 2020. Findings indicate that college presidents discussed their organizations’ implementation of public health matters, the importance of togetherness in a crisis, and how their institutions were helping the community during the public health emergency. College leaders’ desire to attain much-needed resources was also evident in many op-eds. This study illuminates how college presidents used public messaging via opinion pieces to communicate publicly during the early months of the pandemic and to attempt to secure resources for their organizations.
A Comparative Analysis of Social Media Fan (Community) Engagement in a European and a North American Pro-Sport League and Their Reaction to Industry-Wide Disruptions
Authors: Jakar Gidon , Carr Jeff
Published: August 2022

Professional and amateur sport throughout the world experienced an industry-wide disruptions caused by the COVID-19 pandemic. The initial stage of the pandemic required the postponement of leagues and games, until athletic events were resumed without fans. This disruption required the sport industry to adapt and supply substitute products to engage users without the access to the primary product, live sport. In this study, we compare how a North American league (National Basketball Association) and a European league (English Premier League) adapted to these changes using social media to engage with fans. We examine changes in the volume of Tweets and engagements with official team Twitter posts. Our data contain categorical control variables accounting for different stages of the pandemic. This includes when games were canceled for health and safety reasons, when play was resumed in a bubble format, in-season periods, and offseason periods. Examining social media engagement during these periods is a unique opportunity to compare team (supply) strategies and fan reactions (demand) to a disruption, and to explore the longer-term implications such as expanded engagement after the disruption has ended or when its effects have lessened.
Incidence and Risk Factors Associated with Respiratory Compromise in Planned PICU Admissions Following Tonsillectomy
Authors: Hazkani Inbal , Stein Eli , Ching Siong Tey , Hill Robert , Dautel Jacob , Patel Mital D. , Vaughn William , Cordray Holly , Patel Eshan , Clark Addison , Raol Nikhila , Evans Sean
Published: August 2022

Objectives:

Review the incidence and factors associated with respiratory compromise requiring intensive care unit level interventions in children with planned admission to the pediatric intensive care unit (PICU) following tonsillectomy or adenotonsillectomy (T/AT).

Study design:

Retrospective cohort study.

Methods:

Review of all patients with PICU admissions following T/AT from 2015 to 2020 at a tertiary care pediatric hospital. Patient demographics, underlying comorbidities, operative data, and respiratory complications during PICU admission were extracted.

Results:

Seven hundred and seventy-two patients were admitted to the PICU following T/AT, age 6.1 ± 4.6 years. All children were diagnosed with obstructive sleep apnea or sleep-disordered breathing (mean pre-operative apnea-hypopnea index 29 ± 26.5 and O2 nadir 77.1% ± 11.1). Neuromuscular disease, enteral feed dependence, and obesity were common findings (N = 240 (31%), N = 106 (14%), and N = 209 (27%) respectively). Overall, 29 patients (3.7%) developed respiratory compromise requiring PICU-level support, defined as new-onset continuous or bilevel positive airway pressure support (n = 25) or reintubation (n = 9). Three patients were diagnosed with pulmonary edema. Multivariable regression analysis demonstrated pre-operative oxygen nadir and enteral feed dependence were associated with respiratory compromise (OR = 0.97, 95% CI 0.94-0.99, P = .04; OR = 6.3, 95% CI 2.36-52.6, P = .001 respectively).

Conclusions:

Our study found respiratory compromise in 3.7% of patients with planned PICU admissions following T/AT. Oxygen nadir and enteral feeds were associated with higher respiratory compromise rates. Attention should be given to these factors in planning for post-operative disposition.
Social work research ethics in China: A scoping review of research involving human subjects during COVID-19
Authors: Wang Yixuan , Wu Shiyou , He Longtao , Li Linjing , Wang Zijiao
Published: August 2022

As the first review to systematically explore the scope and application of Chinese social work research ethics, this study incorporated web-crawling technology in the scoping review process and identified 18 eligible studies from 1168 publications from January 2020 to July 2021. Findings suggest that social work scholars are aware of research ethics when conducting human subjects research in the Chinese population. Yet, many failed to fully demonstrate practical considerations of internationally accepted ethical principles (e.g. respect for persons). We discuss education on research ethics, new challenges of the digital age, and considerations of Chinese culture in developing ethical protocols for social work research in China.
Burnout and mindfulness among social workers in Spain: A structural equation model of mindfulness and areas of worklife as burnout predictors
Authors: Romero-Martín Sandra , Elboj-Saso Carmen , Íñiguez-Berrozpe Tatiana
Published: August 2022

Although the number of studies on burnout in social work has increased in recent years, research is still scarce. A similar situation occurs in the area of studies on the effects of mindfulness in this profession, although the research topic has increased exponentially. Based on a quantitative analysis, our study proposes a structural equation model that relates the constructs of burnout, areas of worklife, and dispositional mindfulness among social workers. Results suggest that high levels of mindfulness as well as consistency in the areas of worklife have predictive and preventive effects on the incidence of burnout in social work.
The design of continuous carbon fiber composite honeycombs and study on its properties
Authors: Lin Yuan , Yang Zhiyong , Wang Xiaodong , Zuo Xiaobiao , Li Zengshan , Guan Zhidong , Li Jiaxue , Jiang Yun
Published: August 2022

A lot of researches on continuous carbon-fiber composite laminates have been conducted, but no scrutiny has been devoted to continuous carbon-fiber composite honeycomb sandwiches. This paper is aimed to assess the design and properties aspects of honeycomb sandwiches made of continuous carbon-fiber composite laminates. The applicability of the existing theoretical formulas for the mechanical properties of isotropic material honeycomb sandwich on continuous carbon-fiber composite honeycomb is examined by comparing the obtained results from the finite-element modeling and experimental results. The results reveal that the theoretical formulas of isotropic material honeycomb sandwich in density and out-of-plane compressive elastic modulus are suitable for continuous carbon-fiber composite honeycomb, while other performances cannot be achieved by theoretical formulas of isotropic material honeycomb sandwiches. The out-of-plane compression and shear properties of continuous carbon-fiber composite honeycomb can be evaluated by finite-element modeling. The effects of cell side length, wall thickness, and 45° ply content on the honeycomb density, out-of-plane compression properties and out-of-plane shear strength are researched. Subsequently, the out-of-plane compression experiments of honeycomb are carried out to show the accuracy of the finite-element modeling. Finally, a design approach for continuous carbon-fiber composites honeycomb structures is proposed. This methodology results in the design of honeycomb sandwiches with better performances. The chief innovation of this paper is to develop the concept of continuous carbon-fiber composite honeycomb sandwich structures. To this end, a honeycomb structure finite-element model of continuous carbon-fiber composite is established, and the mechanical properties of continuous carbon-fiber composite honeycomb sandwiches are explored. A methodology for the rapid design of honeycomb size parameters of continuous carbon fiber composite honeycomb sandwich is also proposed.
Automatic 3-Dimensional Cephalometric Landmarking via Deep Learning
Authors: Dot G. , Schouman T. , Chang S. , Rafflenbeul F. , Kerbrat A. , Rouch P. , Gajny L.
Published: August 2022

The increasing use of 3-dimensional (3D) imaging by orthodontists and maxillofacial surgeons to assess complex dentofacial deformities and plan orthognathic surgeries implies a critical need for 3D cephalometric analysis. Although promising methods were suggested to localize 3D landmarks automatically, concerns about robustness and generalizability restrain their clinical use. Consequently, highly trained operators remain needed to perform manual landmarking. In this retrospective diagnostic study, we aimed to train and evaluate a deep learning (DL) pipeline based on SpatialConfiguration-Net for automatic localization of 3D cephalometric landmarks on computed tomography (CT) scans. A retrospective sample of consecutive presurgical CT scans was randomly distributed between a training/validation set ( n = 160) and a test set ( n = 38). The reference data consisted of 33 landmarks, manually localized once by 1 operator( n = 178) or twice by 3 operators ( n = 20, test set only). After inference on the test set, 1 CT scan showed “very low” confidence level predictions; we excluded it from the overall analysis but still assessed and discussed the corresponding results. The model performance was evaluated by comparing the predictions with the reference data; the outcome set included localization accuracy, cephalometric measurements, and comparison to manual landmarking reproducibility. On the hold-out test set, the mean localization error was 1.0 ± 1.3 mm, while success detection rates for 2.0, 2.5, and 3.0 mm were 90.4%, 93.6%, and 95.4%, respectively. Mean errors were −0.3 ± 1.3° and −0.1 ± 0.7 mm for angular and linear measurements, respectively. When compared to manual reproducibility, the measurements were within the Bland–Altman 95% limits of agreement for 91.9% and 71.8% of skeletal and dentoalveolar variables, respectively. To conclude, while our DL method still requires improvement, it provided highly accurate 3D landmark localization on a challenging test set, with a reliability for skeletal evaluation on par with what clinicians obtain.
Predictors of Psychosocial Adaptation and Mental Well-Being Among People With Chronic Illnesses and Disabilities in Hong Kong
Authors: Siu Andrew M. H. , Chan Sam C. C. , Cheung Mike K. T. , Shek Daniel T. L.
Published: August 2022

Psychosocial adaptation to chronic illness and disability (CID) involves a complex interplay of the client’s background factors with resilience and coping. To date, there have been few studies on psychosocial adaptation to CID in the Chinese context. To examine the predictors of psychosocial adaptation, we surveyed people with CID from community-rehabilitation settings and self-help groups ( N = 224). The research questionnaire collected information on demographics, health-related factors, social support, resilience, coping strategies, psychosocial adaptation, and mental well-being. Resilience, coping strategies, health-related factors, and sex were found to be important predictors of psychosocial adaptation. Using structural equation modeling (SEM), we tested a conceptual model on how social support and health-related factors predict adjustment variables (resilience and coping strategies), which further affect psychosocial adaptation and mental well-being. All the variables are closely linked and the path coefficients are all significant. An overall fair model fit (comparative fit index [CFI] = 0.89; root mean square error of approximation [RMSEA] = 0.089) was obtained. The results provide support for the conceptual model we proposed based on health-related coping and the phase model of psychosocial adaptation. The key predictors of psychosocial adaptation and mental well-being in Chinese people with CID in Hong Kong are similar to those identified in non-Chinese studies.
The Development and Evaluation of a Smartphone-Aided Diagnosis Application to Measure Tympanic Membrane Perforations
Authors: Li Lok-Yee Joyce , Wang Shin-Yi , Yang Jinn-Moon , Chen Chih-Jou , Tsai Cheng-Yu , Wu Lucas Yee-Yan , Wu Te-Fang , Wu Cheng-Jung
Published: August 2022

Objectives

Chronic otitis media is a long-term infection of the middle ear. It is characterized by persistent discharge from the middle ear through a perforated tympanic membrane. It is one of the most common causes of preventable hearing loss, especially in developing countries. Precise estimation of the size of tympanic membrane perforation is essential for successful clinical management. In this study, we developed a smartphone-based application to calculate the ratio of the area of tympanic membrane perforation to the area of the tympanic membrane. Twelve standardized patients and 60 medical students were involved to assess the area of tympanic membrane perforation, in particular, the percentage of perforation size.

Methods

In total, 60 student doctors (including year 5 and year 6 medical students, intern and post-graduate year training of doctors) were recruited during their rotation at the Otolaryngology department of Taipei Medical University Shuang-Ho Hospital. Twelve standardized patients with chronic otitis media were recruited through a single otology practice. Oto-endoscopic examination was performed for all patients by using a commercially-available digital oto-endoscope, and clinical images of the tympanic membrane perforation were obtained. To demonstrate the variability of perforation size estimation by different student doctors, we calculated the percentage of perforation using the smartphone-based application for 12 tympanic membranes objectively and compared the results with those visually estimated by the 60 student doctors subjectively.

Results

The variance in the visual estimation by the 60 student doctors was large. By contrast, variances in smartphone-based application calculations were smaller, indicating consistency in the results obtained from different users. The smartphone-based application accurately estimated the presence of perforation for tympanic membranes with high consistency. The differences in visual estimations can be considerably great and the variances can be large among different individuals.

Conclusions

The smartphone-based application is a dependable tool for precisely evaluating the size of tympanic membrane perforation.
Care and the Cowboy Boot: Interspecies Responsibility and the Wobbly Boundaries of Lab Animal Personhood
Authors: Sharp Lesley A.
Published: August 2022

Of what relevance is a cowboy boot to understandings of the moral underpinnings of lab animal care, value, and personhood? I trace the movement of chimpanzees from laboratories to sanctuaries, wherein associated forms of care in the latter expose efforts to foster emergent chimpanzee personhood. Staff of one sanctuary view chimps’ former lives as constrained by standardized, impersonal forms of care: as lab subjects, they were confined to small quarters and valued primarily as sources of scientific data. In contrast, sanctuary care entails efforts to individualize animals through quirky, creative strategies that jostle interspecies boundaries. In one instance, a pair of cowboy boots embodies associated challenges and triumphs. I argue that attentiveness to the values assigned to nonhuman ways of being, interspecies encounters, and inanimate things together uncover otherwise hidden efforts to redirect entrenched notions of professional responsibility, compassion, and the morality of care. I ask, if anthropological definitions of personhood are anchored in forms of human sociality, under what conditions can practices, objects, and other creatures rattle, alter, or redirect premises of personhood to incorporate interspecies understandings? How might the wobbly boundaries of sanctuary life loop back to transform, rather than denigrate, the works and lives of laboratory staff?
“Vergangenheitsbewältigung” revisited: Distinguishing two paradigms of working through the past
Authors: Schulz Johannes
Published: August 2022

Social movements like BLM and Rhodes Must Fall have recently re-emphasized the need for “working through” our collective past. I argue that we must be careful to distinguish two distinct and sometimes conflicting understandings of what it means to work through the past. An “idealist” understanding which sees “working through” as a process of self-enlightenment and moral learning through uncovering and acknowledging past moral failures and incorporating them into our collective self-image. The “materialist paradigm”, in contrast, understands “working through” as a process of uncovering the ways in which the structural causes of past moral catastrophe have endured into the present. It rejects idealist calls for reconciliation with the past and present and aims at the negative goal of preventing future moral catastrophe through changing tainted social structures. I argue, finally, that effective processes of working through the past have to engage in both idealist myth-building and materialist deconstruction.
Using tiny artifacts to answer big questions: Machine learning, microdebitage, and household spaces at Tamarindito
Authors: Johnson Phyllis S. , Eberl Markus , Estrada Aguila Rebecca , Bell Charreau , Spencer-Smith Jesse
Published: August 2022

The spatial analysis of microdebitage (measuring less than 6.3 mm) can identify areas where stone tools were knapped at archaeological sites. These tiny artifacts tend to become embedded in the locations where they were first deposited and are less vulnerable to post-depositional movement, making microdebitage an important artifact class for identifying primary areas of stone tool production. Traditional microdebitage analysis, however, can take multiple hours spread over several days to complete. Because of this, microdebitage analysis is typically completed in very small areas of sites due to the intensive time and labor commitment required. Recently, however, my colleagues and I have developed a novel, interdisciplinary method that combines dynamic image analysis and machine learning to analyze microdebitage taken from soil samples at archaeological sites. Analyses of experimental microdebitage demonstrated that microdebitage could be accurately and efficiently identified within archaeological soil samples using this method. In the present study, we apply these methods to soil samples taken from the Maya Capital of Tamarindito in Guatemala to verify whether these methods remain accurate when applied to archaeological contexts.
Dyadic coping and marital quality in same-sex and different-sex marriages
Authors: Wang Yiwen , Umberson Debra
Published: August 2022

Dyadic coping, the process through which couples manage stress together, is important for relationship well-being. However, very few studies have considered dyadic coping and its link with marital quality in same-sex marriages. We analyze dyadic data from a sample of midlife same- and different-sex married couples ( N = 838 individuals, 418 couples) to assess gender differences in various forms of dyadic coping (i.e., received and provided positive and negative dyadic coping as well as common/collaborative dyadic coping) and the associations of dyadic coping with marital quality. Results suggest that women married to women are more likely to receive positive support and less likely to receive negative support compared to women married to men. Both men and women in same-sex marriages are more likely to cope with stress collaboratively than their counterparts in different-sex marriages. All forms of dyadic coping are equally important for the marital quality of men and women in same- and different-sex marriages.
The technological novelty of invention and speed to IPO of high-tech start-ups
Authors: Li Congshan , Zhou Jieyu
Published: August 2022

The technological novelty of inventions signals economic potential while simultaneously indicating considerable technological and market risks. We speculate that unlike early-stage venture capital (VC) investors, late-stage public investors will interpret technological novelty as a signal of high risks. Consequently, they will hesitate to promptly invest in high-tech start-ups with such inventions, thereby slowing the initial public offering speed of the start-ups. Based on a sample of 408 VC-backed healthcare start-ups founded between 1990 and 2010, we find support for our hypothesis. We also find that the negative effect of technological novelty of inventions can be relieved when the technology is characterised by conventionality, when the founder is also the inventor, or when the start-up is backed by premium VC investors.
Image variability and face matching
Authors: Gogan Taylor , Beaudry Jennifer , Oldmeadow Julian
Published: August 2022

This study investigates whether variability in perceived trait judgements disrupts our ability to match unfamiliar faces. In this preregistered study, 174 participants completed a face matching task where they were asked to indicate whether two ambient face images belonged to the same person or different people (17,748 total data points). Participants completed 51 match trials consisting of images of the same person that differed substantially on one trait (either trustworthiness, dominance or attractiveness) with minimal differences in the alternate traits. Participants also completed 51 mismatch trials which contained two photos of similar-looking individuals. We hypothesised that participants would make more errors on match trials when images differed in terms of attractiveness ratings than when they differed on trustworthiness or dominance. Contrary to expectations, images that differed in terms of attractiveness were matched most accurately, and there was no relationship between the extent of differences in attractiveness ratings and accuracy. There was some evidence that differences in perceived dominance and, to a lesser extent, trustworthiness were associated with lower face matching performance. However, these relationships were not significant when alternate traits were accounted for. The findings of our study suggest that face matching performance is largely robust against variation in trait judgements.
Application of Different Data Analytics for Evaluation of Heavy Vehicle Vulnerability in Cold-Region Rural Highways
Authors: Yasanthi Rillagoda G.N. , Mehran Babak
Published: August 2022

Understanding the impacts of different driving conditions on truck speed is critical to the development and maintenance of resilient highway freight transportation systems. This study attempts to evaluate the combined impact of road weather, travel lane, vehicle type, and truck payload conditions on drivers’ speed choice by modelling speed distributions as normal distributions. Two data analytics, a regression-based approach (RBA) and a central limit theorem (CLT)-based approach (CBA), are adapted to model context-specific speed distributions. The regression-based approach models population-level speed distributions by considering samples of individual speed data, whereas the CBA uses sampling distributions produced according to the CLT. A holistic approach is proposed to identify overall vehicle-specific collision risks imposed by different road-weather conditions, based on the speed distribution parameters estimated. Implications of the study results pertaining to the trucking industry are threefold. First, adapting different data analytics leads to different study results; yet, the CBA is recommended to model speed distributions. Second, truck speeds are significantly affected by the presence of adverse road-weather conditions, yet marginally varied under different loading conditions. Third, overall, tractor–trailer combinations (TTCs) entail high collision risks, particularly when transporting a freight load under adverse road-weather conditions. The study results would be useful to policymakers, particularly for effective speed management in extremely cold regions. Trucking companies may use the study results to identify the least risk-posing road-weather conditions to deploy safe freight transport operations. The resulting speed distribution models are also useful as input to calibrate traffic micro-simulation models.
Analytical and Microsimulation Model Calibration and Validation: Application to Roundabouts under Sight-Restricted Conditions
Authors: Chun Gyounghoon , Rouphail Nagui , Samandar M. Shoaib , List George , Yang Guangchuan , Akçelik Rahmi
Published: August 2022

Analytical models and traffic microsimulation are two widely used platforms for evaluating roundabout operations. The application of the correct inputs and proper specification of calibration parameters should precede the actual simulation, to replicate field traffic conditions. In this sense, simultaneous data collection and estimation of the input, calibration, and validation variables, along with knowledge of their definitions, are crucial. Although simultaneity of data gathering is virtually guaranteed with the use of wide-frame videos captured with an unmanned aerial system (UAS), there are cases where sight distance restrictions may obscure observations of the back of queue and arrival patterns. This paper explores the calibration and validation efforts associated with an analytical platform, SIDRA 9, and a microsimulation model, TransModeler 5, conducted under sight-restricted conditions. Video captured from a drone, followed by trajectory extraction using video processing software, was used to analyze operations on two approaches at a single-lane roundabout. In the process, the team employed a specialized demand estimation method, and developed a novel data collection scheme for estimating the critical headway distribution in TransModeler 5. Because of sight distance constraints, the model validation was limited to the use of the observable system travel time and associated travel speed within the field of view. The comparison results, for both platforms, have confirmed the value of model calibration in more accurately describing field performance. The calibrated models performed differently between the two approaches, with the approach having a larger presence of buses and heavy vehicles yielding slightly poorer results.
Machine Learning Guides the Solution of Blocks Relocation Problem in Container Terminals
Authors: Ye Rongye , Ye Rongguang , Zheng Sisi
Published: August 2022

The blocks relocation problem (BRP) is a well known and important combinatorial optimization problem, in which the initial storage state and retrieval priority of containers are known, and the containers should be picked up in the retrieval order with the goal of minimizing container relocations. This paper studied how machine-learning techniques guide the solution of this Non-deterministic Polynomial problem(NP-hard problem) NP-hard problem. Through our self-developed data generator, we generated initial state stacking matrices and extracted 22 influencing factors for container relocation operations. The supervised learning method and attribution technique were used to verify the relationship between significant container relocated influence features and the number of container relocations using the unrestricted BRP and restricted BRP models. We characterize the potential patterns in the data based on 22 container relocated influence features using four supervised learning models: random forest (RF), extra trees (ET), support vector machine (SVM), and logistic regression (LR). The experimental results demonstrate that RF has a classification accuracy rate of up to 94% on the restricted BRP model. The attribution technique identifies the most sensitive features to the number of container relocations. We organically integrate machine learning into the BRP problem and propose an interactive iterative framework that may provide a novel method for studying the BRP problem.
Effect of Sex and Maturation on Knee Extensor and Flexor Strength in Adolescent Athletes
Authors: Peek Kerry , Ford Kevin R. , Myer Gregory D. , Hewett Timothy E. , Pappas Evangelos
Published: August 2022

Background:

Despite knee extensor and flexor strength reportedly being associated with injury risk, including rupture of the anterior cruciate ligament in girls, there is limited evidence for the longitudinal changes in lower extremity strength.

Purpose:

To investigate the sex-specific relationship with longitudinal changes of knee extensor and flexor strength associated with maturation.

Study design:

Cohort study; Level of evidence, 2.

Methods:

Adolescent boys and girls (N = 257; 208 adolsecent girls) participating in high school basketball, volleyball, and soccer were assessed longitudinally in at least 2 different pubertal stages. Pubertal status (prepubertal, pubertal, and postpubertal) was determined with the modified Pubertal Maturation Observation Scale questionnaire. After a warm-up of 5 submaximal repetitions, participants were tested for concentric peak isokinetic strength for knee extension and flexion at 300 deg/s over 10 repetitions and normalized to body weight. Linear mixed models were used to test for the effect of pubertal stage, sex, and their interaction.

Results:

Significant interactions were identified that indicated different maturational trajectories for knee muscle strength for adolescent boys and girls, particularly between prepubertal and pubertal stages, in which boys demonstrated greater mass normalized knee extensor increases than girls (right, +12% vs +5%; left, +13% vs +7%; P < .001). For knee flexors, boys demonstrated increased strength, while girls demonstrated decreased relative knee flexor strength (right, +4% vs −1%, P = .03; left, +3 vs −3%, P = .009).

Conclusion:

The findings of this study support a differential effect of sex and maturation on important knee strength outcomes that may have implications for knee injury reduction, particularly in adolescent girls as they mature.
Recall Bias in the Retrospective Collection of Common Patient-Reported Outcome Scores in Hip Arthroscopy
Authors: Crutchfield Connor R. , Givens Ritt R. , O’Connor Michaela , deMeireles Alirio J. , Lynch T. Sean
Published: August 2022

Background:

The use of patient-reported outcomes (PROs) is common practice in the treatment of patients undergoing hip arthroscopy. While the prospective collection of PROs is preferred, retrospective collection involving patient recall is not uncommon and may be subject to bias.

Purpose:

To assess the presence of recall bias between prospectively and retrospectively collected PRO scores in hip arthroscopy.

Study Design:

Cohort study; Level of evidence, 2.

Methods:

Patients who underwent hip arthroscopy between 2015 and 2021 and provided preoperative baseline responses for the International Hip Outcome Tool–12 (iHOT-12), the Hip disability and Osteoarthritis Outcome Score–Physical Shortform (HOOS-PS), and the modified Harris Hip Score (mHHS) were eligible for recruitment. After surgery, participants were asked to complete a study-specific survey and the same preoperative PROs retrospectively. Agreements between the prospective and retrospective scores were assessed, and associations between score discrepancies and patient characteristics were identified.

Results:

A total of 94 patients (43.3% participation rate) completed study requirements and were included for analysis. The mean ± standard deviation duration of symptoms before surgery was 25.3 ± 32.8 months, and the mean duration to recall (from the day of surgery) for the PROs was 29.6 ± 22.2 months. The iHOT-12 (intraclass correlation coefficient [ICC], 0.409; P < .001) and HOOS-PS (ICC, 0.415; P < .001) scores had low agreement between prospectively and retrospectively collected scores. The mHHS showed moderate agreement (ICC, 0.598; P < .001). The mean scores for the iHOT-12 (41.4 ± 22.6 vs 34.6 ± 16.3; P < .01), HOOS-PS (29.7 ± 18.5 vs 40.9 ± 17.1; P < .001), and mHHS (62.7 ± 16.5 vs 54.5 ± 14.8; P < .001) were all significantly different prospectively versus retrospectively. The average changes in score for the iHOT-12, HOOS-PS, and mHHS were −6.8, 11.2, and −8.2, respectively. Duration to recall and female sex were predictors of the difference between prospectively and retrospectively collected iHOT-12 data, while no predictors were significant for the HOOS-PS or mHHS.

Conclusion:

The retrospective collection of PROs for hip arthroscopy procedures is subject to bias. On average, retrospective (recalled) PROs reflected worse pain/function than their prospectively recorded counterpoints; therefore, retrospective patient recall is an unreliable source of clinical data, and the prospective collection of iHOT-12, mHHS, and HOOS-PS data should be prioritized.
Coexistence of anti-topoisomerase I and anticentromere antibodies in a patient with systemic sclerosis. Efficacy of treatment combining rituximab and nintedanib. A case report
Authors: Montolio-Chiva Lydia , Carmona-Talavera Diego , López-Ortega Jose M , Orenes-Vera Ana V , Flores-Fernández Eduardo , Alegre-Sancho Juan J
Published: August 2022

In the diagnostic of systemic sclerosis (SSc), both anti-centromere (ACA) and anti-topoisomerase I (ATA) antibodies are considered mutually exclusive, though their coexistence has been also reported in some patients. Notably, nintedanib has been approved for the treatment of interstitial lung disease associated to SSc. Herein, we present the clinical case of a 41-year-old woman with SSc who shows an immunological seroconversion (from ACA positivity to a coexistence of ACA and ATA antibodies) together with changes in her clinical phenotype. Besides, the patient responds positively to the treatment of her lung involvement with a combination of immunomodulators and antifibrotic agents.
Journalism and reportage of insecurity: Newspaper and television coverage of banditry activities in Northern Nigeria
Authors: Chukwuma Alphonsus Ugwu , Etumnu Emeka Williams , Talabi Felix Olajide , Fadeyi Isaac Olajide , Aiyesimoju Ayodeji Boluwatife , Apuke Oberiri Destiny , Celestine Gever Verlumun
Published: August 2022

This study explored how the different media in Nigeria report banditry currently ravaging some parts of the country. We sampled two newspapers and two television stations to articulate the study. The result showed, among others, that both TV and newspapers did not adequately set the agenda on the problem of banditry in Nigeria. Comparatively, newspapers did better than TV stations. We discussed these findings in the light of agenda-setting and made suggestions for further studies.
Study on properties of 3D-printed GelMA hydrogel scaffolds with different nHA contents
Authors: Wang Yaocheng , Lin Chengxiong
Published: August 2022

Biological 3D printing is a reliable technology for 3D printing bone repair scaffolds with simple operation, high efficiency, and relatively low cost. Gelatin methacryloyl (GelMA) hydrogels have attracted much attention due to their good biocompatibility, but the poor mechanical properties limit their application in bone reconstruction engineering. In this study, nano-hydroxyapatite (nHA) particles were added to GelMA hydrogels, and the performances of composite hydrogel scaffolds with different nHA contents were investigated in terms of rheological properties, light transmission properties, surface morphology, mechanical properties, and biocompatibility. The experimental results showed that the incorporation of nHA particles could effectively improve the printability and mechanical properties of the scaffolds, the scaffold fibers had better resistance to deformation, improved degradation rate, and biological experiments confirmed that nHA particles had no significant cytotoxicity. However, the addition of HA particles also reduced the light transmission properties of the slurry, and when its content exceeds a certain value, the hydrogel scaffolds show incomplete curing and eventually affect their test performance. The results can offer guidance and reference for the selection of ink and function for 3D printing bone repair scaffold.
Factors Influencing Nurses' Self Care Practices
Authors: Udoudo Deborah Adedire , Agu Chinwendu Felicia , Lawrence Erica Sophia , Woolcock Andrea Marie Mellissa , Emanuel-Frith Mickelle , Kahwa Eulalia
Published: August 2022

Background: The COVID-19 pandemic has exposed nurses to more stress and inability to practice self-care activities. These have resulted in conditions that threaten their health, well-being, and ability to work. Nurses’ lack of self-care can predispose them to chronic health conditions and staff burnout which may adversely affect patient care. The panacea for this concern is a deliberate effort to promote holistic health and wellbeing through self-care activities targeted towards physical, mental, social and spiritual aspects of nurses. The purpose of this study was to explore factors influencing self-care practices among registered nurses during COVID-19 pandemic. Methods: Convenience sampling was used to select 294 nurses from four urban hospitals in Kingston Jamaica. A questionnaire was utilized for data collection. Logistical regression analysis was conducted using Statistical Package for Social Sciences (SPSS) software version 22.0. Ethical approval was obtained. Results: The response rate was 46% (Out of 294 questionnaires distributed, only 136 were returned). Although 93% of participants engage in self-care activities during COVID-19 pandemic, only 45% practiced self-care on a daily basis. Half of the participants (50%) practiced self care activities sometimes while 5% do not engage in self care practices. Activities that promote psychological and social wellbeing were not common among participants. Most self care activities were towards the promotion of physical health and wellbeing. Majority of respondents indicated that excess workload, fatigue, lack of time and poor remuneration are factors that prevent their practice of self-care. Findings also revealed that demographic data such as age, sex, income, gender and ethnic background influences self-care practices among nurses. Conclusion: The practice of self care among nurses needs improvements. Although respondents engage in some activities to care for self, majority are not consistent with this practice.
Research on steering-tilting characteristics of an active tilting three-wheeled vehicle
Authors: Liu Pingyi , Gu Yifei , Xu Zhe , Zhang Junnan , Wei Wenjun , Wang Ya
Published: August 2022

Active tilting narrow vehicles can prevent rollover and improve riding stability through active tilting technology during steering, but it is difficult to obtain the turning radius and solve the optimal tilting angle. In this paper, based on the active tilting three-wheeled vehicle (ATTWV), the geometric analysis method of steering wheel’s alignment was proposed and used to calculate the specific formula of turning radius during steering and tilting, and the effect of tilting on the turning radius was studied. Based on the steering and tilting mathematical model of force equilibrium state, the ideal tilting angle was solved and the S-shaped curve steering test verification was carried out with the prototype vehicle. The results show that the lateral acceleration of the vehicle fluctuates within ±0.16 g during steering, realizing the equilibrium between the component of gravity and centrifugal force. The average error between the actual tilting angle and the calculated ideal tilting angle is 1.18°. Based on steering and tilting mathematical model of the rollover critical state of the ATTWV, the safe turning speed under the specific tilting angle can be solved, and the value range of the tilting strength coefficient can be obtained, which provides not only a reference for the control of ATTWVs but also a theoretical basis for the research on accurate self-driving control of the active tilting narrow vehicles in the future.
Detumbling motion planning for the space manipulator with grasped targets and flexible appendages in the post-capturing phase
Authors: Zhan Bowen , Jin Minghe , Ma Boyu , Huang Bincheng
Published: August 2022

This paper proposes a detumbling motion planning algorithm for free-flying space manipulator with a grasped tumbling target in the post-capturing phase. This algorithm can not only collision-freely guide the space manipulator and the target to terminal stationary states but also suppress the residual vibration of the flexible appendage on the space manipulator. First, considering the avoidances of self-collisions and motion singularities, a smooth detumbling path is planned for the space manipulator by a proposed smoothing rapid random tree star algorithm (SM-RRT*). Second, a quintic polynomial function is implemented to generate a continuous detumbling trajectory along the detumbling path. Then, with the object of minimizing the residual flexible vibrations and the constrains of joint acceleration limits, an optimization model is established to refine the detumbling trajectory. Finally, the optimization model is solved by an improved particle swarm optimization algorithm (PSO), where a potential field term is included in the generation of the particle velocity to enhance the computational efficiency. Simulation results validate the effectiveness of the proposed detumbling motion planning algorithm.
The Games We Play: Prosocial Choices Under Time Pressure Reflect Context-Sensitive Information Priorities
Authors: Teoh Yi Yang , Hutcherson Cendri A.
Published: August 2022

Time pressure is a powerful experimental manipulation frequently used to arbitrate between competing dual-process models of prosocial decision-making, which typically assume that automatic responses yield to deliberation over time. However, the use of time pressure has led to conflicting conclusions about the psychological dynamics of prosociality. Here, we proposed that flexible, context-sensitive information search, rather than automatic responses, underlies these divergent effects of time pressure on prosociality. We demonstrated in two preregistered studies ( N = 304 adults from the United States and Canada; Prolific Academic) that different prosocial contexts (i.e., pure altruism vs. cooperation) have distinct effects on information search, driving people to prioritize information differently, particularly under time pressure. Furthermore, these information priorities subsequently influence prosocial choices, accounting for the different effects of time pressure in altruistic and cooperative contexts. These findings help explain existing inconsistencies in the field by emphasizing the role of dynamic context-sensitive information search during social decision-making, particularly under time pressure.
Androgen receptor suppresses inflammatory response of airway epithelial cells in allergic asthma through MAPK1 and MAPK14
Authors: Xia T , Ma J , Sun Y , Sun Y
Published: August 2022

Background

Dysfunction of airway epithelial cells in patients with asthma is closely with the occurrence and development of allergic asthma. Finding the differences of airway epithelium between asthmatic patients and normal patients is helpful to find out new treatment strategies.

Methods

First, three original microarray datasets (GSE89809, GSE41861, GSE104468) from the Gene Expression Omnibus (GEO) dataset were used to assess differentially expressed genes in the epithelial tissues between patients with allergic asthma and healthy controls. Then, 10 ng/mL TGF-β1 treated BEAS-2B cells and rats with ovalbumin induced allergic asthma were performed to confirm our assumption from the gene expression analysis with microarrays.

Results

Top ten hub significant difference genes were obtained by Cytohubba plug-in from GSE41861, and found that androgen receptor (AR) was closely associated with the mitogen-activated protein kinase (MAPK) pathway, especially MAPK1 and MAPK14. After treated with the TGF-β1 treated BEAS-2B cells and rats with allergic asthma, we found that 5α-dihydrotestosterone (5α-DHT), AR agonist, significantly decreased the Th2 inflammation (IL-25 and IL-33), MAPK1 and MAPK14 proteins expression in vitro and in vivo. The roles of 5α-DHT were similar with the results of chicanine (a p38 MAPK and ERK1/2 inhibitor), but the roles of 5α-DHT were masked by the C16-PAF (a MAPK and MEK/ERK activator) treatment.

Conclusion

Androgen receptor limits the secretion of Th2 inflammatory factors by downregulating MAPK1 and MAPK14 in the TGF-β1 treated BEAS-2B cells and rats with ovalbumin induced allergic asthma, which plays a critical role for the therapeutics of patients with asthma.