bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison of first-year student conceptions of their future roles as engineers between Belgium, Ireland, and The Netherlands
Authors: Saunders-Smits Gillian , Craps Sofie , Carthy Darren , Langie Greet
Published: June 2021

Recent research by KU Leuven showed that 33% of the engineering graduates in Flanders changed jobs in the first year, with 60% of those citing job content as a reason. Also, industry often reports that recent graduate hires lack the right skills for the job. It appears that students seem to enter the labour market less prepared both in perception and skill level. This study investigates the perceptions of first-year students on their future role and the competencies they need by developing an engineering role model on the business model of Tracey and Wiersema. The premise of the PREFER-model is that most vacancies for junior engineers fall into one of three roles: Product Leadership (i.e., focus on radical innovation), Operational Excellence (i.e., focus on process optimization), and Customer Intimacy (i.e., focus on client-tailored solutions). A survey was administered to first-year students from the three largest engineering degrees in Belgium, Ireland, and the Netherlands. A total of 197 students in Belgium (KU Leuven – Engineering Technology), 89 students in Ireland (TU Dublin – Engineering), and 372 students in the Netherlands (TU Delft – Aerospace Engineering) participated. In this survey, students were also asked to express their preference for three fictional job vacancies reflecting the three different roles. The results showed that first-year students do not have a clear view of the future and have an idealized perception of the engineering profession centred around the Product Leadership role. Students were also found to overestimate their level of preparedness when it comes to their mastery of competencies. It is suggested that having a discerning professional roles model as well as instruments that allow students to assess their role alignment and associated role competencies will help mitigate these issues.
Analysis of hip joint cross-shear under variable activities using a novel virtual joint model within Visual3D
Authors: Layton Robin B , Messenger Neil , Stewart Todd D
Published: June 2021

Cross-shear forces occur between bearing surfaces at the hip and have been identified as a key contributor to prosthesis wear. Understanding the variation in relative motion paths between both individuals and activities, is a possible explanation for increased revision rates for younger patients and could assist in improved pre-clinical testing regimes. Additionally, there is little information for the pre-clinical testing of cartilage substitution therapies for younger more active individuals. The calculation of motion paths has previously relied on computational modelling software which can be complex and time-consuming. The aim of this study was to determine whether the motion paths calculations could be integrated into gait analysis software to improve batch processing, reduce analysis time and ultimately improve the efficiency of the analysis of cross-shear variation for a broader range of activities. A novel Virtual Joint model was developed within Visual3D for calculating motion paths. This model was compared to previous computational methods and found to provide a competitive solution for cross shear analysis (accuracy <0.01 mm error between methods). The virtual hip model was subsequently applied to 13 common activities to investigate local aspect ratio’s, velocities and accelerations. Surprisingly walking produced the harshest cross shear motion paths in subjects. Within walking, of additional interest was that the localised change in acceleration for subjects was six times greater compared to the same point on an equivalent smoothed simulator cycle. The Virtual hip developed in Visual 3D provides a time saving technique for visualising and processing large data sets directly from motion files. The authors postulate that rather than focussing on a generalised smoothed cross-shear model that pre-clinical testing of more delicate structures should consider localised changes in acceleration as these may be more important in the assessment of cartilage substitutes sensitive to shear.
Do People Choose Life Insurance for Protection or for Saving?
Authors: Deb Rajat , Nath Kanchan Kumar , Nepal Mukesh , Chakraborty Sourav , Chakraborty Kiran Sankar
Published: June 2021

The current study has motivated for assaying whether life insurance (LI) enrolment should be taken as a protection tool or a saving instrument. Reviewing literature hypotheses have been farmed and tested by gathering primary data through a survey from 120 sample respondents chosen by applying stratified random sampling. It has applied a cross-sectional study design and significant results have validated selective demographics, risks, returns, tax incentives, and precautionary motives likely have influenced LI enrolments. Interestingly, instead of protection tools, LI plans have been preferred as saving instrument. Existing insured customers may use the report for revisiting their risk appetites and quantum of sum assured to assess whether they have been under-insured and if so, they could chalk out plans for taking purely term plans rather than traditional plans and unit link insurance plans to replenish the deficiency.
Female Olympians’ voices: Female sports categories and International Olympic Committee Transgender guidelines
Authors: Devine Cathy
Published: June 2021

The fair inclusion of female athletes at elite and Olympic levels is secured in most sports by way of female categories because of the extensively documented biological and performance-related differences between the sexes. International policy for transgender inclusion is framed by the definitive International Olympic Committee transgender guidelines in which the International Olympic Committee confirms the ‘overriding sporting objective is and remains the guarantee of fair competition’ and transwomen can be excluded from female categories if, in the interests of fairness, this is necessary and proportionate. Feminist theorists argue justice requires that women have equal moral standing in the sociocultural–political structures of society including sport. As such their voices should carry equal democratic weight. However, female elite and Olympic athletes are rarely heard in the sociocultural–political discourses of academic literature or policy formulation for transgender inclusion in female categories by the International Olympic Committee and governing bodies of sport. This empirical study investigated the views and presents the ‘voices’ of 19 female Olympians. The main findings include (1) these athletes thought both female and transgender athletes should be fairly included in elite sport, (2) unanimous agreement there is not enough scientific evidence to show no competitive advantage for transwomen, (3) unanimous agreement that the International Olympic Committee should revisit the rules and scientific evidence for transgender inclusion in female categories, and (4) the majority of athletes felt that they could not ask questions or discuss this issue without being accused of transphobia.
Breast Self-Examination Practice Among Female University Students in Ethiopia: A Systematic Review and Meta-Analysis
Authors: Kassie Ayelign Mengesha , Abate Biruk Beletew , Kassaw Mesfin Wudu , Shiferaw Wondimeneh Shibabaw
Published: June 2021

Background:

Breast self-examination (BSE) is one of the most feasible methods of screening for early stages of breast cancer. However, the practice rate is insufficient in many low and middle-income countries including Ethiopia. Hence, this study aimed to estimate the pooled prevalence of BSE practice among female university students in Ethiopia.

Methods:

PubMed, Cochrane Library, Scopus, and Google Scholar were searched for studies that assessed BSE practice among female students in Ethiopian universities. The study included articles published from January 1st, 2010 to June 16th, 2020. The Cochran’s Q chi-square and the respective I2 test statistics were used to check heterogeneity among the included studies. To assess publication biases, the funnel plot and Egger’s regression tests were employed. Subgroup analysis was done by using different characteristics of studies. Sensitivity analysis was also run to assess the effect of a single study on the pooled outcome. STATA™ Version 14 software packages were employed for data analysis.

Results:

Sixteen (n = 16) studies with 5,743 participants were included to estimate the pooled prevalence of BSE practice. The prevalence of regular BSE practice reported in the studies ranges from 0% to 26.4%. The estimated pooled prevalence of regular BSE practice among university students in Ethiopia is 11.23% which is very low. The prevalence of BSE practice was high, 13.6% in studies published before 2015, 12.0% among health science students, and 12.6% in studies with a sample size of 384 participants and above. In addition, the estimated pooled prevalence of irregular self-breast-examination practice was 33.28%.

Conclusion:

The rate of BSE practice among female university students is low. Thus, awareness strategies need to be designed to increase the practice rate among women in the country as BSE is one of the most feasible strategies in early detection of breast cancer if properly implemented.
Fundamental Elements in Training Patient Navigators and Their Involvement in Promoting Public Cervical Cancer Screening Knowledge and Practices: A Systematic Review
Authors: Mboineki Joanes Faustine , Wang Panpan , Chen Changying
Published: June 2021

Background:

Cervical cancer screening remains unsatisfactory in some regions due to hindrances. This study aims to explore fundamental elements in training patient navigators and their involvement in promoting screening knowledge and practices.

Methods:

This systematic review study included only English published articles between 2014 and 2019 from PubMed/Medline, EBSCO, Science Direct, and Wiley online library.

Results:

Healthcare professionals trained patient navigators in 3 days regarding screening basics, along with group discussions and role-plays. They delivered effective health education and navigation assistance.

Conclusion:

The group education session facilitated by patient navigators, coupled with navigation care, resulted in a high screening rate.
Polyvictimization and Psychosocial Outcomes Among Trauma-Exposed, Clinic-Referred Youth Involved in the Juvenile Justice System
Authors: Pane Seifert Heather T. , Tunno Angela M. , Briggs Ernestine C. , Hill Sherika , Grasso Damion J. , Adams Zachary W. , Ford Julian D.
Published: June 2021

Polyvictimization is a robust predictor of emotional and behavioral problems and is linked to involvement in juvenile justice and other public sector systems. This study extends prior research by employing person-centered methods for identifying polyvictimization patterns among trauma-exposed, clinic-referred, justice-involved youth ( n = 689; ages 12–18 years) and how identified classes differ on psychosocial outcomes and demographic characteristics. Most participants had experienced multiple traumatic event (TE) types. Latent class analyses identified three classes: mixed trauma/bereavement exposure group (55.1%; Mean = 3.0 TE types); maltreatment polyvictimized group (29.3%; Mean = 5.7 TE types); and maltreatment plus extreme violence polyvictimized group (15.7%; Mean = 9.3 TE types). Polyvictimized youth were more likely to be female, in out-of-home placements, and experiencing negative psychosocial outcomes (e.g., Posttraumatic Stress Disorder). Hispanic/Latino youth were overrepresented in the extreme polyvictimized subgroup. Results underscore the need for cross-system coordination of trauma-informed, comprehensive services for clinic-referred, justice-involved youth.
Do Local Immigrant-Welcoming Efforts Increase Immigration? The Detroit Experience
Authors: Huang Xi
Published: June 2021

Immigration policymaking has been active at the local level in the United States over the past few decades. This study examines whether the economic development-oriented immigrant-welcoming efforts that started in 2010 in Detroit have increased the local immigrant population. It uses the synthetic control method to construct a comparison region that resembles Detroit in the preintervention periods to serve as a counterfactual. Empirical results reveal a statistically significant increase in the immigrant share of the population in the metropolitan area during the postintervention period of 2011–2014. The increase is robust to various sets of specifications and placebo tests. The share of high-skilled immigrants in the local population also increased during this time, albeit with a weak statistical significance. These findings point to the potential of immigrant-welcoming programs in attracting and retaining immigrants and immigrant talent.
Naturalistic Evaluation of an Adjunctive Yoga Program for Women with Substance Use Disorders in Inpatient Treatment: Within-Treatment Effects on Cravings, Self-efficacy, Psychiatric Symptoms, Impulsivity, and Mindfulness
Authors: Petker Tashia , Yanke Christine , Rahman Liah , Whalen Laurel , Demaline Karen , Whitelaw Kari , Bang Debbie , Holshausen Katherine , Amlung Michael , MacKillop James
Published: June 2021

Addiction continues to be a major public health concern, and rates of relapse following currently-available treatments remain high. There is increasing interest in the adjunctive use of mindfulness-based interventions, such as yoga, to improve treatment outcomes. The current study was a preliminary naturalistic investigation of a novel trauma-informed yoga intervention in an inpatient treatment program for women with substance use disorder (SUD). Changes and differences in somatic symptoms, psychiatric symptoms, and psychological mechanisms were evaluated in women receiving treatment-as-usual (n = 36) and treatment-as-usual plus the yoga intervention (n = 42). For both groups, statistically significant within-subjects changes were present for somatic and psychiatric symptoms, cravings, self-efficacy, and multiple facets of impulsivity and mindfulness. Compared to standard treatment alone, participants in the treatment plus yoga condition significantly improved in range of motion and the Lack of Premeditation facet of impulsivity. Although most domains were not selectively affected, these initial within-treatment findings in this naturalistic evaluation suggest some promise for adjunctive yoga and a need for further evaluation, especially using larger samples and longer term follow-up.
Students’ perceptions of visibility in physical education
Authors: Åsebø Eli-Karin S , Løvoll Helga S , Krumsvik Rune J
Published: June 2021

The purpose of this study is to explore students’ perceptions of visibility in physical education (PE) using a single cumulative case study approach. Data were generated from the descriptive field notes of seven participant observations ( n = 77), individual semi-structured interviews ( n = 13) and five focus group interviews ( n = 18) with ninth-grade students (ages 14–15 years) from three classes in a public lower secondary school in Norway. The findings show that students perceive visibility differently depending on the context; some students like being visible in PE, while others dread it. Perceptions change rapidly and are situation-specific, influenced by the lesson content, the way the teacher facilitates the lessons, self-perception shaped by past experiences, the presence, actions, and attitudes of fellow students, body pressure and societal body ideals. The findings actualise the relevance of the transaction model of stress and coping ( Lazarus and Folkman, 1984 ) in determining when visibility in PE is and is not perceived as stressful. Consequently, the organization of the PE environment benefits from these insights.
Cost-effectiveness of early placement of vena cava filters to prevent symptomatic pulmonary embolism in patients with contraindications to prophylactic anticoagulant
Authors: Ho Kwok M , Rogers Frederick B , Rao Sudhakar , Chamberlain Jenny , Geelhoed Elizabeth
Published: June 2021

Introduction:

Vena cava filters have been used as a primary means to prevent symptomatic pulmonary embolism (PE) in trauma patients who cannot be anticoagulated after severe injury, but the economic implications for this practice remain unclear.

Methods:

Using a healthcare system perspective to analyze the a priori primary outcome of the da Vinci trial, we report the cost-effectiveness of using vena cava filters as a primary means to prevent PE in patients who have contraindications to prophylactic anticoagulation after major trauma.

Results:

Of the 240 patients enrolled, complete, prospectively collected, hospital cost data during the entire hospital stay − including costs for the filter, medical/nursing/allied health staff, medical supplies, pathology tests, and radiological imaging − were available in 223 patients (93%). Patients allocated to the filter group ( n = 114) were associated with a reduced risk of PE (0.9%) compared to those in the control group ( n = 109, 5.5%; p = 0.048); and the filter’s benefit was more pronounced among those who could not be anticoagulated within 7 days (filter: 0% vs control: 16%, Bonferroni-corrected p = 0.02). Overall, the cost needed to prevent one PE was high (AUD $379,760), but among those who could not be anticoagulated within 7 days, the costs to prevent one PE (AUD $36,156; ~ USD $26,032) and gain one quality-adjusted life-year (AUD $30,903; ~ USD $22,250) were substantially lower.

Conclusion:

The cost of using a vena cava filter to prevent PE for those who have contraindications to prophylactic anticoagulation within 3 days of injury is prohibitive, unless such contraindications remain for longer than 7 days. (Australian New Zealand Clinical Trials Registry no.: ACTRN12614000963628)
Code-related literacy profiles of kindergarten students with autism
Authors: Solari Emily J , Henry Alyssa R , Grimm Ryan P , Zajic Matthew C , McGinty Anita
Published: June 2021

Difficulties with reading development have been well documented in samples of children with autism spectrum disorders. This study utilized a state-level early literacy dataset of kindergarten students educationally diagnosed with autism spectrum disorder ( N = 616) to investigate the development of critical early reading skills across the kindergarten year. The study employed latent profile analysis and latent transition analysis to empirically derive profiles of early readers at kindergarten entry and the end of kindergarten. Results demonstrate the heterogenous nature of early reading skills for young school-aged students with autism spectrum disorder. Results have important implications for the early instruction and intervention of early reading for young children with autism spectrum disorder.

Lay abstract

Many children and young students with autism have difficulties learning how to read. This study investigated early literacy development in children with autism spectrum disorder during their first year of formal schooling. The study found that children with autism spectrum disorder differ greatly on their early literacy skills, with some showing strengths in their understanding of the alphabet, spelling, and reading words. Other students in the sample had difficulties with these early reading skills. The findings of this study are important to better understand the most effective way to teach early literacy skills to children with autism spectrum disorder.
Objective and subjective psychosocial outcomes in adults with autism spectrum disorder: A 6-year longitudinal study
Authors: Scheeren Anke M , Buil J Marieke , Howlin Patricia , Bartels Meike , Begeer Sander
Published: June 2021

Research has shown lower rates of employment and independent living in adults with autism. Many of these findings are based on cross-sectional studies, predominantly involving male participants. In a 6-year longitudinal study, we examined determinants of psychosocial outcomes in 917 adults with autism spectrum disorder (425 men, 492 women, mean age 43.5 years). Most were diagnosed in adulthood and had (above) average intellectual abilities. Via a yearly online survey, participants’ objective psychosocial functioning (based on employment, independent living and friendship) and subjective well-being were assessed. Averaged across the five waves of the study, 86% of the sample showed a fair to very good level of objective psychosocial functioning. Objective psychosocial functioning and subjective well-being were positively correlated, and both improved over time. Lower intellectual ability, more autism traits, co-occurring psychiatric conditions and younger age predicted poorer objective outcomes. More autism traits and co-occurring psychiatric conditions predicted lower subjective well-being. There were no gender differences in initial levels of, or changes in, objective and subjective outcomes over time. This study has identified important risk/protective factors for psychosocial outcomes across early and middle adulthood. In general, the findings offer a more positive outlook for adults with autism and average to high intellectual abilities.

Lay abstract

Previous research has shown that relatively few adults with autism have a paid job or live on their own. However, outcomes also vary a lot and may depend on many different factors. In this study, we examined the level of functioning and happiness of 917 adults with autism (425 men and 492 women) aged 18–65 years. Most of them were of average to high intellectual ability. Over 6 years, we measured whether they had a paid job, close friendships and lived on their own (i.e. their objective functioning). We also measured how happy they felt. Objectively, most autistic adults did fairly to very well. Those with better objective outcomes (e.g. those with paid work) also tended to be happier. Most adults improved in objective functioning and happiness over 6 years. Participants with a lower intellectual ability, more autism traits, mental health problems and younger age had poorer objective outcomes. Participants with more autism traits and mental health problems were less happy. Autistic men and women functioned at similar levels and were equally happy. We found important factors that predict a better (or worse) outcome for autistic adults. Overall, compared with some previous research, our findings give a more positive picture of the outcomes for autistic adults with average to high intellectual abilities.
A novel method for in-cylinder pressure prediction using the engine instantaneous crankshaft torque
Authors: Tsitsilonis Konstantinos-Marios , Theotokatos Gerasimos
Published: June 2021

Current practices of condition assessment in large marine engines are largely based on the measurement of cylinder pressure using external kits, which poses challenges due to sensors synchronisation and durability issues, as well as the inability to perform continuous monitoring. For addressing these challenges, this study aims at developing a novel method to solve the inverse problem of predicting the pressure variations in all engine cylinders, by using the Instantaneous Crankshaft Torque (ICT) measurement for large internal combustion engines. This method is developed by considering the Initial Value Problem (IVP) technique along with the integration of a direct crankshaft dynamics model incorporating the sensitivity parameters and stability criteria calculation based on the Lyapunov Exponent (LE) as well as a state-of-the-art Nonmonotone Self-Adaptive Levenberg-Marquardt (NSALMN) optimisation algorithm. The method is tested for a number of case studies using different combustion models based on the Weibe and sigmoid functions, as well as for healthy, degraded and faulty engine conditions. The derived results demonstrate adequate accuracy exhibiting a maximum error of 0.3% in the prediction of the mean peak in-cylinder pressure. The analysis of the calculated sensitivity parameters resulted in the identification of the parameters that significantly impact the solution, thus providing improved insights for selecting the developed method settings. The developed method renders the continuous and non-intrusive in-cylinder pressures monitoring feasible, by using a permanently installed shaft power metre sensor with higher sample rates.
An acoustic liner design methodology based on a statistical source model
Authors: Nark Douglas M , Jones Michael G
Published: June 2021

The attenuation of fan tones remains an important aspect of fan noise reduction for high bypass ratio turbofan engines. However, as fan design considerations have evolved, the simultaneous reduction of broadband fan noise levels has gained interest. Advanced manufacturing techniques have also opened new possibilities for the practical implementation of broadband liner concepts. To effectively address these elements, practical acoustic liner design methodologies must provide the capability to efficiently predict the acoustic benefits of novel liner configurations. This paper describes such a methodology to design and evaluate multiple candidate liner configurations using realistic, three dimensional geometries for which minimal source information is available. The development of the design methodology has been guided by a series of studies culminating in the design and flight test of a low drag, broadband inlet liner. The excellent component and system noise benefits obtained in this test demonstrate the effectiveness of the broadband liner design process. They also illustrate the value of the approach in concurrently evaluating multiple liner designs and their application to various locations within the aircraft engine nacelle. Thus, the design methodology may be utilized with increased confidence to investigate novel liner configurations in future design studies.
Assessing Genetic Variants in Matched Biocompartments From Patients With Serous Ovarian Cancer
Authors: Sanders Brooke E. , Ku Lisa , Walker Paul , Bitler Benjamin G.
Published: June 2021

The clinical use of molecular tumor profiling (MTP) is expanding and there is an increasing use of MTP data to manage patient care. At the University of Colorado, 18 patients were diagnosed with primary serous ovarian cancer between 9/2015 and 6/2019 and consented for banking and analysis of tumor, ascites and plasma. All 18 patients had tumor and plasma samples that were sent for MTP, and 13 of 18 patients additionally had ascites collected and sent for MTP. 50-gene panel testing and BRCA testing were performed on primary tumor. BRCA genetic variants were more likely to be identified in plasma as compared to ascites or tumor, though not statistically significant ( P = 0.17). Co-occurring genetic variants between plasma and ascites were less common in comparison to co-occurring variants between tumor and plasma or tumor and ascites, though not statistically significant ( P = 0.68). Variants in KDR (VEGFR2) and TP53 were most likely to be conserved across all 3 biocompartments. Mutant allele frequencies (MAF) of individual genetic variants varied across biocompartments, though tended to be highest in the tumor, followed by ascites.
Acute Brain-Derived Neurotrophic Factor DNA Methylation Trajectories in Cerebrospinal Fluid and Associations With Outcomes Following Severe Traumatic Brain Injury in Adults
Authors: Treble-Barna Amery , Heinsberg Lacey W. , Puccio Ava M. , Shaffer John R. , Okonkwo David O. , Beers Sue R. , Weeks Daniel E. , Conley Yvette P.
Published: June 2021

Background. Epigenetic biomarkers have the potential to explain outcome heterogeneity following traumatic brain injury (TBI) but are largely unexplored. Objective. This exploratory pilot study characterized brain-derived neurotrophic factor ( BDNF) DNA methylation trajectories following severe TBI. Methods. Brain-derived neurotrophic factor DNA methylation trajectories in cerebrospinal fluid (CSF) over the first 5 days following severe TBI in 112 adults were examined in association with 3- and 12-month outcomes. Results. Group-based trajectory analysis revealed low and high DNA methylation groups at two BDNF cytosine-phosphate-guanine (CpG) targets that showed suggestive associations ( P < .05) with outcomes. Membership in the high DNA methylation groups was associated with better outcomes after controlling for age, sex, and injury severity. Associations of age × trajectory group interactions with outcomes at a third CpG site revealed a pattern of the same or better outcomes with higher ages in the high DNA methylation group and worse outcomes with higher ages in the low DNA methylation group. Conclusions. Although no observed associations met the empirical significance threshold after correcting for multiple comparisons, suggestive associations of the main effect models were consistent in their direction of effect and were observed across two CpG sites and two outcome time points. Results suggest that higher acute CSF BDNF DNA methylation may promote recovery following severe TBI in adults, and this effect may be more robust with higher age. While the results require replication in larger and racially diverse independent samples, BDNF DNA methylation may serve as an early postinjury biomarker helping to explain outcome heterogeneity following TBI.
A prospective randomized feasibility trial comparing angiography and angiography with intravascular ultrasound for treatment of hemodialysis access failures
Authors: Shutze William , Rendon Rachel , Lee Victoria , Hu Minyi , Duffy Áine , Adelman Mark
Published: June 2021

Objective

Hemodialysis accesses suffer from limited primary patency requiring frequent interventions, revisions, or even abandonment. Prolongation of access life and usability with minimization of these adverse events is paramount. Endovascular methods are established first-line interventions for failing arteriovenous access and treatment of venous outflow stenoses. The Primary goal of this feasibility study was to evaluate intravascular ultrasound (IVUS) during interventional treatments on outcomes in those undergoing angiography for failing hemodialysis access. Secondary goals were to determine differences between IVUS and angiography on vessel and lesion characteristics and impact on treatment.

Methods

In this prospective, randomized controlled trial, patients scheduled for angiography to evaluate and treat a failing hemodialysis access were randomized to use of angiography (DSA) alone or angiography plus IVUS (DSA + IVUS). Patients were treated by a standardized protocol and seen in follow-up at 2 weeks, and every 3 months for 2 years or until a study endpoint was reached. Measurement of vessel diameters, % stenosis, lesion length, and study endpoints (AV access thrombosis, re-intervention, or surgical revision) were recorded.

Results

A total of 55 subjects were enrolled, 27 in the DSA cohort and 28 in the DSA + IVUS cohort. There were 41 treated lesions in each group. Freedom from the composite endpoint of AV access thrombosis or re-intervention was 46.3% in the DSA cohort and 61.0% in the DSA + IVUS cohort ( p = 0.27). Diameter measurements matched between the two imaging modalities only 9 times out of 41 total comparison measures. In pre-treatment lesions with >80% stenosis, IVUS had a greater tendency than DSA to underestimate the severity of stenosis, whereas in pre-treatment lesions with 50–80% stenosis, DSA was more likely than IVUS to underestimate the severity of stenosis. Post-treatment % stenosis had mean difference of −7.5% between DSA versus DSA + IVUS cohorts. In five lesions with <30% stenosis measured by angiogram, IVUS led to treatment escalation.

Conclusion

In the interventional treatment of failing angioaccess, IVUS and angiography differ in the vast majority of cases in measurement of vessel diameter. A significant number of patients were found to have suboptimal therapeutic response by IVUS only, which led to an escalation in treatment, and in over one-third of cases, the IVUS results led to a change in treatment plan. The improved patency rates in the IVUS group was not statistically significant in this small population but should be further investigated in a larger trial.
When two actors perform different tasks: Still no evidence for shared task-sets in joint task switching
Authors: Yamaguchi Motonori , Shah Husnain H , Hommel Bernhard
Published: June 2021

Two different variations of joint task switching led to different conclusions as to whether co-acting individuals share the same task-sets. The present study aimed at bridging this gap by replicating the version in which two actors performed two different tasks. Experiment 1 showed switch costs across two actors in a joint condition, which agreed with previous studies, but also yielded even larger switch costs in a solo condition, which contradicted the claim that actors represent an alternative task as their own when it is carried out by the co-actor but not when no one carries it out. Experiments 2 and 3 further examined switch costs in the solo condition with the aim to rule out possible influences of task instructions for and experiences with the other task that was not assigned to the actor. Before participants were instructed on the second of the two tasks, switch costs were still obtained without a co-actor when explicit task names (“COLOUR” and “SHAPE”) served as go/nogo signals (Experiment 2), but not when arbitrary symbols (“XXXX” and “++++”) served as go/nogo signals (Experiment 3). The results thus imply that switch costs depend on participants’ knowledge of task cues being assigned to two different tasks, but not on whether the other task is performed by a co-actor. These findings undermine the assumption that switch costs in the joint conditions reflect shared task-sets between co-actors in this procedure.
Outcomes of Bone Marrow Stimulation for Secondary Osteochondral Lesions of the Talus Equal Outcomes for Primary Lesions
Authors: Rikken Quinten G. H. , Dahmen Jari , Reilingh Mikel L. , van Bergen Christiaan J. A. , Stufkens Sjoerd A. S. , Kerkhoffs Gino M. M. J.
Published: June 2021

Objective

To compare clinical, sports, work, and radiological outcomes between primary and secondary osteochondral lesions of the talus (OLTs; <15 mm) treated with arthroscopic bone marrow stimulation (BMS).

Design

Secondary OLTs were matched to primary OLTs in a 1:2 ratio to assess the primary outcome measure—the Numeric Rating Scale (NRS) during activities. Secondary outcomes included the pre- and 1-year postoperative NRS at rest, American Orthopaedic Foot and Ankle Society score, Foot and Ankle Outcome Score subscales, and the EQ-5D general health questionnaire. The rates and time to return to work and sports were collected. Radiological examinations were performed preoperatively and at final follow-up using computed tomography (CT).

Results

After matching, 22 and 12 patients with small (<15 mm) OLTs were included in the primary and secondary groups, respectively. The NRS during activities was not different between primary cases (median: 2, interquartile range [IQR]: 1-4.5) and secondary cases (median: 3, IQR: 1-4), P = 0.5. Both groups showed a significant difference between all pre- and postoperative clinical outcome scores, but no significant difference between BMS groups postoperatively. The return to sport rate was 90% for primary cases and 83% for secondary cases ( P = 0.6). All patients returned to work. Lesion filling on CT was complete (67% to 100%) in 59% of primary cases and 67% of secondary cases ( P = 0.6).

Conclusion

No differences in outcomes were observed between arthroscopic bone marrow stimulation in primary and secondary OLTs at 1-year follow-up. Repeat BMS may therefore be a viable treatment option for failed OLTs in the short term.
A dynamic reframing of the social/personal identity dichotomy
Authors: Walker Benjamin W.
Published: June 2021

For decades, scholars in organizational and social psychology have distinguished between two types of identity: social and personal. To what extent, though, is this dichotomy useful for understanding identities and their dynamics, and might a different approach facilitate deeper insight? Such are the guiding questions of this article. I begin by reviewing framings of the social/personal identity dichotomy in organizational psychology, and tracing its origins and evolution in social psychology. I then evaluate the strengths and limitations of this dichotomy as a tool for understanding identities. In an attempt to retain the dichotomy’s strengths and overcome its limitations, I present a modified conceptualization of the social and personal dimensions of identity, one that defines these dimensions based on psychological experience (not identity content), and treats them as two independent continua (not two levels of a dichotomy, or opposing ends of a continuum) that any given identity varies along across contexts.

Plain language summary

A single person can identify with lots of different aspects of their life: their family, community, job, and hobbies, to name but a few. In the same way it helps to group different items in a shop into sections, it can be helpful to group the different identities available to people into categories. And for a long time, this is what researchers have done: calling certain identities “social identities” if based on things like race and culture, and “personal identities” if based on things like traits and habits. In this paper, I explain that for various reasons, this might not be the most accurate way of mapping identities. Instead of categorizing them based on where they come from, I suggest it’s more helpful to focus on how identities actually make people feel, and how these feelings change from one moment to the next. I also point out that many identities can make someone feel like a unique person and part of a broader group at the same time. For this reason, it’s best to think of the “social” and “personal” parts of an identity not as opposites—but simply different aspects of the same thing.
The effect of non-adherence to antipsychotic treatment on rehospitalization in patients with psychotic disorders
Authors: Abdullah-Koolmees H. , Nawzad S. , Egberts T.C.G. , Vuyk J. , Gardarsdottir H. , Heerdink E.R.
Published: June 2021

Background and Aims:

Many patients with psychotic disorders are non-adherent to antipsychotic (AP) medication(s), potentially contributing to rehospitalization. It is unknown whether non-adherence in different phases of AP use is associated with rehospitalization. The aim of this study was to assess the association between non-adherence to APs and rehospitalization in patients with psychotic disorders. Non-adherence was assessed specifically for the initiation, continued drug use and early discontinuation of AP use.

Methods:

A retrospective follow-up study was performed. Adult patients were included at discharge if they suffered from schizophrenia, psychotic, or bipolar I disorder; had been hospitalized in a psychiatric hospital for ⩾7 days; and were treated with oral APs. Patients discharged between January 2006 and December 2009 from Altrecht Mental Health Care were included. Non-adherence was studied in the three phases of medication use: initiation, continued drug use (implementation) and (early) discontinuation after discharge until the end of follow up or until patients were rehospitalized. Cox regression analysis was used to assess the strength of the association between non-adherence for the different phases of AP use and rehospitalization during follow up and expressed as relative risk (RR) with 95% confidence intervals (CI).

Results:

A total of 417 patients were included. Patients who did not initiate their APs compared with those who did in the first month (RR = 1.62, 95% CI: 1.19–2.19) and between the first and third month after discharge (RR = 1.70, 95% CI: 1.04–2.79) had the highest risk for rehospitalization during follow up. Overall, patients who did not initiate their AP medication within the first year after discharge had a RR of 2.70 (95% CI: 1.97–3.68) for rehospitalization during follow up compared with those that initiated their AP.

Conclusion:

Not initiating APs right after discharge was associated with an increased risk of rehospitalization. Interventions should aim to promote the initiation of APs soon after discharge to minimize the risk of rehospitalization.
Two Cases of Well Controlled Chronic Spontaneous Urticaria Triggered by the Moderna COVID-19 Vaccine
Authors: Alflen Cylie , Birch Katheryn , Shilian Ryan , Wu Shan Shan , Hostoffer Robert
Published: June 2021

Chronic spontaneous urticaria (CSU, chronic idiopathic urticaria) is a clinical diagnosis characterized by recurrent urticaria of unknown origin, with or without angioedema, that occurs for six weeks or longer. Management of CSU includes a second-generation H1 antihistamine and/or elimination of exacerbating factors. If initial treatment is unsuccessful, trials of first generation H1 antihistamine, H2 blocking antihistamine, leukotriene-receptor antagonist, anti-inflammatory or immunosuppressive agents may be administered. Exacerbating factors include stress, environmental conditions, medications, physical stimuli, and infections. We report the first two cases of a COVID-19 vaccine triggered relapse of CSU that was previously well controlled on therapy.
A Grounded Theory Analysis of the Experience of Therapy in the Context of Negative Change
Authors: Hart Christina , Boellinghaus Inga , Holttum Sue , Shepherd Melanie , O’Brien Clare , Salter Daniel
Published: June 2021

Negative change occurring during psychotherapy is relatively underresearched and current theories take little account of social context. Eight clients and four therapists were interviewed about their therapy experience when reliable score deterioration on an outcome measure was observed, with the aim of generating a Grounded Theory model of negative change. The emerging model identified three major themes: a context of adversity, the therapeutic experience, and help withdrawn (within the context of positive outcomes). Difficulties included wanting therapy to provide more advice, talking about distressing issues, relationship difficulties, ambivalence, and a wish for support instead of change. Client context merits increased attention. Changes in outcome measures used, more diverse supervision models, training to use outcome measures constructively, and sensitive, routine analysis of negative change are indicated. Increased availability of therapies able to address clients’ interpersonal and social context and a wider choice of therapy type would allow interventions to better fit the individual in context.
Novel Optimization-Based Parameter Estimation Method for the Bass Diffusion Model
Authors: Liang Lang
Published: June 2021

The Bass model is the most popular model for forecasting the diffusion process of a new product. However, the controlling parameters in it are unknown in practice and need to be determined in advance. Currently, the estimation of the controlling parameters has been approached by various techniques. In this case, a novel optimization-based parameter estimation (OPE) method for the Bass model is proposed in the theoretical framework of system dynamics ( SD). To do this, the SD model of the Bass differential equation is first established and then the corresponding optimization mathematical model is formulated by introducing the controlling parameters as design variable and the discrepancy of the adopter function to the reference value as objective function. Using the VENSIM software, the present SD optimization model is solved, and its effectiveness and accuracy are demonstrated by two examples: one involves the exact solution and another is related to the actual user diffusion problem from Chinese Mobile. The results show that the present OPE method can produce higher predicting accuracy of the controlling parameters than the nonlinear weighted least squares method and the genetic algorithms. Moreover, the reliability interval of the estimated parameters and the goodness of fitting of the optimal results are given as well to further demonstrate the accuracy of the present OPE method.
“He was like, my ride or die”: Sexual and Gender Minority Emerging Adults’ Perspectives on Living With Pets During the Transition to Adulthood
Authors: McDonald Shelby E. , Matijczak Angela , Nicotera Nicole , Applebaum Jennifer W. , Kremer Liza , Natoli Grace , O’Ryan Ryan , Booth Laura J. , Murphy Jennifer L. , Tomlinson Camie A. , Kattari Shanna K.
Published: June 2021

This qualitative study explores the benefits and risks associated with living with companion animals during the transition to adulthood among 117 sexual and gender minority (SGM) emerging adults living in the U.S. Interviews were transcribed and analyzed using template analysis. Thematic analysis identified several risks (caregiver burden, pets as barriers to relationships, animal-related psychological stress) and benefits (pets as a buffer to stress, pets as social capital, pets as a coping mechanism for mental health, and pets as identity and purpose) associated with living with pets. Our results suggest that pets may influence SGM emerging adult identity development and related wellbeing by facilitating feelings of belongingness, positive self-regard, and purpose; promoting social interactions; and providing emotional support and comfort to cope with stress. However, pets, and their associated care, were also a source of caregiving burden and psychological stress. We discuss practice and policy implications and directions for future research.
The Utility of Continuous Passive Motion After Anterior Cruciate Ligament Reconstruction: A Systematic Review of Comparative Studies
Authors: D’Amore Taylor , Rao Somnath , Corvi John , Jack Robert A. , Tjoumakaris Fotios P. , Ciccotti Michael G. , Freedman Kevin B.
Published: June 2021

Background:

The application of continuous passive motion (CPM) after anterior cruciate ligament reconstruction (ACLR) was popularized in the 1990s, but advancements in the understanding of ACLR rehabilitation have made the application of CPM controversial. Many sports medicine fellowship–trained surgeons report using CPM machines postoperatively.

Purpose:

To determine the efficacy of CPM use for recovery after ACLR with respect to knee range of motion (ROM), knee swelling, postoperative pain, and postoperative complications.

Study Design:

Systematic review; Level of evidence, 3.

Methods:

The PubMed (MEDLINE), EMBASE, Cochrane, Cumulative Index of Nursing, and Allied Health Literature databases were searched from inception to January 1, 2020, for studies with evidence levels 1 to 3 on the use of CPM for ACLR rehabilitation. Included studies were those that comparatively evaluated postoperative outcomes after ACLR between at least 2 groups of patients, with 1 having received CPM rehabilitation and the other not having received CPM.

Results:

A total of 12 studies from 1989 to 2019 met the inclusion criteria. These studies included 808 patients who underwent ACLR. There was no evidence of CPM improving knee stability, final postoperative ROM, or subjective pain scores. Additionally, CPM did not lead to decreased muscle atrophy or improved International Knee Documentation Committee scores. Regarding pain medication intake during postoperative hospitalization, 2 studies found that the CPM group used less pain medication, 1 study found the CPM group used more pain medication, and 1 study found that there was no difference between the 2 groups. Complications varied widely, with 2 of 12 studies reporting complications that required a return to the operating room.

Conclusion:

A clinical benefit of postoperative CPM use after ACLR was not identified in this review. While our systematic review identified a number of studies that suggest CPM use may be associated with lower usage of pain medication in hospitalized patients, this cannot be confirmed without further investigation with standardized CPM protocols and larger sample sizes. Routine CPM use after ACLR was not supported by this systematic review.