bluuebunny/crossref_metadata_2025_split huggingface dataset:
Personality Predictors of Time to Return to Play After Sports-Related Concussion
Authors: Weishaar Megan G. , Stephens Jaclyn A. , Conner Bradley T. 
Published: July 2021

Objective
This study aimed to address a gap in concussion literature by investigating the relation between personality and return to play. It is important to know that earlier return to play places individuals at higher risk of sustaining a new concussion after an initial concussion.

Design
Participants were undergraduate students recruited from psychology courses in 2019 who reported medically confirmed sports-related concussion and medically advised return to play (N = 202). Participants completed an online battery in a supervised laboratory setting that included self-report survey measures, concussion history items, and behavioral impulsivity tasks. Kaplan-Meier analysis and Cox proportional hazards models were used to analyze time to return to play after participants’ first reported sports-related concussion.

Results
Results showed that one subdimension of sensation seeking, experience seeking, and two subdimensions of self-reported impulsivity, attentional and motor impulsivity, were positively associated with earlier return to play after a sports-related concussion. In contrast, higher levels of conscientiousness were associated with later return to play.

Conclusions
Despite a heterogeneous sample, significant relations were found between timing of return to play and sensation seeking, impulsivity, and conscientiousness. Because earlier return to play can heighten the risk of sustaining a new concussion after an initial concussion, it is important to identify characteristics—such as personality traits—that influence individuals’ return-to-play behaviors.

To Claim CME Credits
Complete the self-assessment activity and evaluation online at http://www.physiatry.org/JournalCME

CME Objectives
Upon completion of this article, the reader should be able to: (1) Distinguish between personality traits that resulted in earlier versus later return to play in this sample; (2) Describe why certain personality traits might be related to an earlier or later return-to-play timeline; and (3) List practical ways that these study results could be used to reduce adverse outcomes related to early return to play.

Level
Advanced

Accreditation
The Association of Academic Physiatrists is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.
The Association of Academic Physiatrists designates this Journal-based CME activity for a maximum of 1.0 AMA PRA Category 1 Credit(s)™. Physicians should only claim credit commensurate with the extent of their participation in the activity.
Facial Anthropometry Measurements Using Three-Dimensional Stereophotogrammetry Analysis Among Nigerians
Authors: Adekunle Adegbayi Adeola , Olowo Abiodun Yusuff , James Olutayo , Adamson Olawale Olatubosun , Alade Azeez A. , Agbogidi Failat Olushola , Oladega Afìsu O. , Ogunlewe Mobolanle Olugbemiga , Adeyemo Wasiu Lanre , Busch Tamara D. , Mossey Peter A. , Marazita Mary L. , Butali Azeez 
Published: July 2021

Abstract
This study aimed to determine the normative facial anthropometry measurement among Nigerians using three-dimensional stereophotogrammetry analysis.
This study was carried out in Lagos, Nigeria over a period of 3 years. The sample population was Nigerians of diverse ethnic groups, age 16 and above with no history of congenital or acquired craniofacial deformities.
A total of 452 subjects participated in the study with 56.2% males and 43.8% females. Most of the participants were between the ages of 25 to 49 (54.4%), 40.7% were less than 25 years of age and only 4.4% were more than 50 years old. The mean body mass index (BMI) for males was 22.7 and 23.4 for females. Mean values of upper facial height, midfacial height, lower facial height, intercanthal distance, interpupillary distance, upper facial width, and lower facial width are 69.13 ± 5.91, 49.89 ± 3.56, 67.85 ± 6.12, 35.19 ± 3.20, 67.04 ± 3.67, 139.43 ± 7.11, and 124.29 ± 9.72 mm, respectively. The upper facial height, commissure width, upper lip length, and lower jaw width were significantly affected by age, while the BMI of an individual was a determinant of the interpupillary distance, facial width, and lower jaw width.
This study demonstrated that there was a statistically significant difference in the facial dimensions of males when compared to females across all ages among the study population. The authors also observed that age and BMI are significant predictors of variations in some of the measurements.
Functional metabolic phenotyping of human pancreatic ductal adenocarcinoma
Authors: Heid Irina , Karakaya Sinan , Münch Corinna , Lueong Smiths S. , Winkelkotte Alina M. , Liffers Sven T. , Godfrey Laura , Cheung Phyllis FY , Savvatakis Konstatinos , Topping Geoffrey J. , Englert Florian , Kritzner Lukas , Grashei Martin , Kunzke Thomas , Sun Na , Walch Axel , Tannapfel Andrea , Viebahn Richard , Wolters Heiner , Uhl Waldemar , Vangala Deepak , Smeets Esther M.M. , Aarntzen Erik H.J.G. , Rauh Daniel , Hoheisel Jörg D. , Hellerschmied Doris , Hahn Stephan A. , Schilling Franz , Braren Rickmer , Trajkovic-Arsic Marija , Siveke Jens T. 
Published: July 2021

AbstractPancreatic Ductal Adenocarcinoma (PDAC) lacks targeted treatment options. Although subtypes with transcriptome-based distinct lineage and differentiation features have been identified, deduced clinically actionable targets remain elusive. We here investigate functional metabolic features of the classical and QM (quasi-mesenchymal)/basal-like PDAC subtypes potentially exploitable for non-invasive subtype differentiation and therapeutic intervention.A collection of human PDAC cell lines, primary patient derived cells (PDC), patient derived xenografts (PDX) and patient PDAC samples were transcriptionally stratified into the classical and QM subtype. Functional metabolic analyses including targeted and non-targeted metabolite profiling (matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI)), seahorse metabolic flux assays and metabolic drug targeting were performed. Hyperpolarized 13C-magnetic resonance spectroscopy (HP-MRS) of PDAC xenografts was used for in vivo detection of intra-tumoral [1-13C]pyruvate and [1-13C]lactate metabolism.We identified glycolysis and lipid metabolism/fatty acid oxidation as transcriptionally preserved metabolic pathways in QM and classical PDAC subtype respectively. However, these metabolic cues were not unambiguously functionally linked to one subtype. Striking functional metabolic heterogeneity was observed especially in primary patient derived cells with only individual samples representing high dependence on glycolysis or mitochondrial oxidation. Of note, QM cells actively use the glycolytic product lactate as oxidative mitochondrial fuel. Using HP-MRS, we were able to non-invasively differentiate glycolytic tumor xenografts with high intratumoral [1-13C]pyruvate to [1-13C]lactate conversion in vivo.Although PDAC transcriptomes indicate molecular subtype-associated distinct metabolic pathways, we found substantial functional metabolic heterogeneity independent of the molecular subtype. Non-invasive identification of highly glycolytic tumors by [1-13C]pyruvate/lactate HP-MRS support individualized metabolic targeting approaches.
The combined toxicity test of polyester and tetra ethylene glycol on Daphnia magna
Authors: Jung Yeonjo 
Published: July 2021

AbstractThe combined toxicity test of polyester and tetra ethylene glycol on Daphnia magna. Globally, wide use of plastics and its increased production has led to a mounting amount of plastic waste entering the natural ecosystems. Due to their small size, plastic particles might be ingested by organisms at the lower end of the food chain and can be transferred by feeding to top consumers. Consequently, plastic pollution in aquatic environments and its potential impact on aquatic life has recently been recognized as an issue of considerable concern for ecosystem. I produced microplastics from 100% polyester thread from Houjix, cut it finely and used a dissecting needle to cut into a size of 5mm or less through a microscope. I also included ethylene glycol to investigate its toxic effects on D. magna. Since my aim was also to compare the toxicity effect of both chemicals, I used different concentrations individually and then in combinations to determine the potential toxic effects of polyester and tetra ethylene glycol (combined and separately) on the life (survival, death) of D. magna.Microplastics from 100% polyester thread from Houjix were produced, into a size of 5mm or less through a microscope. Tetra ethylene glycol was also used to investigate its toxic effects on D. magna. The toxicity effect of both chemicals using different concentrations individually and then in combinations were employed to determine the potential toxic effects of polyester and tetra ethylene glycol (combined and separately) on the life of D. magna. The study exhibited that the IC50 of TEG was higher as compared to polyester which suggests that polyester was more adverse than TEG. Moreover, when TEG and polyester were treated in combination, IC50 value was lower (Figure 3) than the IC50 value of TEG and polyester separately. In other words, the TEG and polyester in combination exhibited the lowest IC50 value in this study. These results suggest that TEG and polyester in combination had adverse effects on the growth and development of D. magna
Habituation, task solving and memorization may facilitate biological invasions: the Starling example
Authors: Rodriguez Alexandra , Hausberger Martine , Clergeau Philippe , Henry Laurence 
Published: July 2021

AbstractInvasions ecology deals more and more with behavioural characteristics of invasive species. Particularly, research have focused on the personality of invaders and on their way of coping with novelty in new habitats. Traits of neophobia may limit individuals in their exploration of novel objects or the consumption of novel foods, they may stop the access to valuable ressources. Actually, in novel environments like cities, food can be unreachable in throwaway dishes with lids or hidden in the garbage or even close to frightening objects. Animals may either left the place and waste these resources, or they can express low neophobia from the beginning and manipulate the objects to reach food. They may also habituate progressively to the context and use the ressources.Here we analyzed the behavioural responses of individuals from three populations of European starling Sturnus vulgaris: a population anciently settled in a rural region, a population that has recently colonized a urban area and a population of wintering migrant birds.We used a series of tests in order to explore if individuals would habituate to a novel object and if they could remember it eight months later. We explored if individuals would be less neophobic when confronted to two novel objects successively and we tested them in a learning task involving a novel object and an attractive food. Our results show that Sturnus vulgaris habituates rapidly to novel objects and that categorization facilitates neophobia lost when confronted to two different novel objects. Initially young birds appeared to be more skilled than adults in the learning task. Individuals from this species seem to be able to remember an object durably. We suggest that habituation, task solving and memorization are three mechanisms enhancing biological invasions.
Identification of a new family of “megaphages” that are abundant in the marine environment
Authors: Michniewski Slawomir , Rihtman Branko , Cook Ryan , Jones Michael A. , Wilson William H , Scanlan David J , Millard Andrew 
Published: July 2021

AbstractMegaphages – bacteriophages harbouring extremely large genomes – have recently been found to be ubiquitous, being described from a variety of microbiomes ranging from the animal gut to soil and freshwater systems. However, no complete marine megaphage has been identified to date. Here, using both short and long read sequencing, we assembled >900 high-quality draft viral genomes from water in the English Channel. One of these genomes included a novel megaphage, Mar_Mega_1 at >650 Kb, making it one of the largest phage genomes assembled to date. Utilising phylogenetic and network approaches, we found this phage represents a new family of bacteriophages. Genomic analysis showed Mar_Mega_1 shares relatively few homologues with its closest relatives, but, as with other mega-phages Mar_Mega_1 contained a variety of auxiliary metabolic genes responsible for carbon metabolism and nucleotide biosynthesis, including isocitrate dehydrogenase [NADP] and nicotinamide-nucleotide amidohydrolase [PncC] which have not previously been identified in megaphages. The results of this study indicate that phages containing extremely large genomes can be found in abundance in the marine environment and augment host metabolism by mechanisms not previously described.
Effect of copper addition in carbon steel on biocorrosion by sulfate-reducing bacteria in solution
Authors: Yu Haobo , Li Zimo , Xia Yeyin , Qi Yameng , Li Yingchao , Liu Qiaoping , Chen Changfeng 
Published: July 2021

Purpose
This paper aims to investigate the anti-biocorrosion performance and mechanism of the Cu-bearing carbon steel in the environment containing sulfate-reducing bacterial (SRB).

Design/methodology/approach
The biocorrosion behavior of specimens with Cu concentration of 0 Wt.%, 0.1 Wt.%, 0.3 Wt.% and 0.6 Wt.% were investigated by immersion test in SRB solution. By examining the prepared cross-section of the biofilm using focused ion beam microscopy, SRB distribution, bacterial morphology, biofilm structure and composition were determined. The ion selectivity of the biofilm was also obtained by membrane potential measurement. Moreover, the anti-biocorrosion performance of the Cu-bearing carbon steel pipeline was tested in a shale gas field in Chongqing, China.

Findings
Both the results of the laboratory test and shale gas field test indicate that Cu-bearing carbon steel possesses obvious resistance to microbiologically influenced corrosion (MIC). The SRB, corrosion rate and pitting depth decreased dramatically with Cu concentration in the substrate. The local acidification caused by hydrolyze of ferric ion coming from SRB metabolism and furtherly aggravated by anion selectivity biofilm promoted the pitting corrosion. Anti-biocorrosion of Cu-bearing carbon steel was attributed to the accumulation of Cu compounds in the biofilm and the weaker anion selectivity of the biofilm. This research results provide an approach to the development of economical antibacterial metallic material.

Originality/value
MIC occurs extensively and has become one of the most frequent reasons for corrosion-induced failure in the oil and gas industry. In this study, Cu-bearing carbon steel was obtained by Cu addition in carbon steel and possessed excellent anti-biocorrosion property both in the laboratory and shale gas field. This study provides an approach to the development of an economical antibacterial carbon steel pipeline to resist MIC.
Decision tree classifiers for unmanned aircraft configuration selection
Authors: Dantas de Jesus Ferreira João Antônio , Secco Ney Rafael 
Published: July 2021

Purpose
This paper aims to investigate the possibility of lowering the time taken during the aircraft design for unmanned aerial vehicles by using machine learning (ML) for the configuration selection phase. In this work, a database of unmanned aircraft is compiled and is proposed that decision tree classifiers (DTC) can understand the relations between mission and operational requirements and the resulting aircraft configuration.

Design/methodology/approach
This paper presents a ML-based approach to configuration selection of unmanned aircraft. Multiple DTC are built to predict the overall configuration. The classifiers are trained with a database of 118 unmanned aircraft with 57 characteristics, 47 of which are inputs for the classification problem, and 10 are the desired outputs, such as wing configuration or engine type.

Findings
This paper shows that DTC can be used for the configuration selection of unmanned aircraft with reasonable accuracy, understanding the connections between the different mission requirements and the culminating configuration. The framework is also capable of dealing with incomplete databases, maximizing the available knowledge.

Originality/value
This paper increases the computational usage for the aircraft design while retaining requirements’ traceability and increasing decision awareness.
The effect of foreign market knowledge on SME export performance: a study ofnon-traditional SMEs in Ghana
Authors: Abubakari Aidatu , Ofori Kwame Simpe , Boateng Henry , N’Da Koffi , Hinson Robert Ebo 
Published: July 2021

Purpose
It is well documented in the extant literature that knowledge plays a crucial role in small and medium enterprise (SME) internationalization. Exporting SMEs from developing economies faces many challenges, including lack of knowledge about institutions in foreign markets, inadequate knowledge about foreign institutions and limited internationalization knowledge (IK). However, research on the export performance of SMEs has thus far focused on the internationalization strategies of multinational corporations. This study aims to explore the effect of foreign market knowledge on SME export performance. The authors also assessed the moderating effect of employee absorptive capacity in the knowledge-performance nexus.

Design/methodology/approach
The authors adopted a survey design to collect data from owners/managers of SMEs exporters in the Greater Accra region of Ghana. A total of 350 questionnaires were distributed based on convenience. Of this number, 257 usable responses were used in the final analysis. The authors tested the proposed model using partial least squares-structural equation modeling.

Findings
The findings show that the three types of foreign market knowledge tested in this study, namely, foreign institutional knowledge (FIK), foreign business knowledge and IK have positive and significant effects on SME exporters’ performance. It also shows that employees’ absorptive capacity affects the relationship between FIK and SME exporters’ performance.

Originality/value
The study demonstrates the types of knowledge relevant to SME export performance. The study further demonstrates the moderating effect of employee absorptive capacity on the relationship between knowledge and export performance. The study advances existing knowledge on SME performance, especially from an emerging economy context.
Do brand rumors matter? The role of brand equity and response strategy to brand rumor
Authors: Choi Jihee , Seo Soobin 
Published: July 2021

Purpose
This paper aims to investigate consumer responses to brand rumors and corporate rumor response strategies in the restaurant industry.

Design/methodology/approach
A scenario-based experimental design was used to examine changes in consumers’ brand evaluation depending on level of brand equity and corporate choice of response strategy.

Findings
It was found that the impact of brand rumors on consumer responses is more negative when the restaurant’s brand equity is low compared to when it is high. It was also found that a company's use of active response strategies is more effective in combating brand rumor than a strategy of simple denial.

Practical implications
The findings have significant implications for both academics and practitioners in terms of developing effective response strategies for counteracting brand rumors.

Originality/value
Given the frequency of brand rumors in the restaurant industry and their serious negative impacts, this study extends the existing brand crisis communication literature by demonstrating how consumers respond to a rumor and the effectiveness of different corporate rumor response strategies.
Comparison of numerical methods in estimating Weibull parameters to install a sustainable wind farm in mount Bamboutos, Cameroon
Authors: Jeutho Gouajio Marinette , Tiam Kapen Pascalin , Yemele David 
Published: July 2021

Purpose
The purpose of this paper is to evaluate the wind energy potential of Mount Bamboutos in Cameroon by comparing nine numerical methods in determining Weibull parameters for the installation of a sustainable wind farm.

Design/methodology/approach
By using statistical analysis, the analysis of shape and scale parameters, the estimation of the available wind power density and wind direction frequency distributions, the objective of this paper is to compare nine numerical methods in estimating Weibull parameters for the installation of a sustainable wind farm in Mount Bamboutos, Cameroon.

Findings
The results suggested that the minimum and maximum values of the standard deviation occurred in the months of May and November 2016, respectively. The graphical method appeared to be the most effective method with the maximum value of variance and minimum values of chi-square and RMSE. The scale factor parameter values indicated that Mount Bamboutos hills were a potential site for electricity generation. The analysis of wind power density showed that it reached the maximum and minimum values in February and September, respectively. The wind direction frequency distributions showed that the prevailing wind directions were North-East.

Originality/value
The wind energy potential of Mount Bamboutos in Cameroon was performed by using nine numerical methods. Therefore, it could be effective to have a prediction model for the wind speed profile. The analysis of wind power density showed that it reached the maximum and minimum values in February and September, respectively. The wind direction frequency distributions showed that the prevailing wind directions were North-East.
The impact of digitalization and inter-organizational technological activities on supplier opportunism: the moderating role of relational ties
Authors: Yang Lu , Huo Baofeng , Tian Min , Han Zhaojun 
Published: July 2021

PurposeDigitalization encourages the manufacturer to engage in inter-organizational technological activities (i.e. supplier IT integration and supply visibility) with its major supplier, which influences supply chain (SC) governance. This study tests a moderated mediation model that considers supplier IT integration and supply visibility as mediators between supply-side digitalization and supplier opportunism, and relational ties as a moderator in the relationship between inter-organizational technological activities and supplier opportunism.Design/methodology/approachOrdinary least square (OLS) regression is used to examine data from 200 firms in China describing their supply chain management (SCM) practices and perceived relationships with their major suppliers.FindingsSupply-side digitalization is positively related to supplier IT integration and supply visibility. Supply-side digitalization has a positive indirect effect on supplier opportunism through supplier IT integration but a negative indirect effect through supply visibility. Relational ties weaken the positive effect of supplier IT integration and the positive indirect effect of supply-side digitalization on supplier opportunism. Relational ties also weaken the negative effect of supply visibility and the negative indirect effect of supply-side digitalization on supplier opportunism.Originality/valueThis study enriches understanding of SC governance in the digital age by empirically confirming that digital transformation brings both challenges and opportunities to SC governance and by clarifying the interplay of relational governance and technological activities. In addition, this study contributes to the SC digitalization literature by empirically validating the role of digitalization in promoting inter-organizational technological activities, as well as by revealing its potential dark side.