bluuebunny/crossref_metadata_2025 huggingface dataset:
Towards Responsiveness: Consumer and Citizen Engagement in Co-Regulatory Rule-Making in the Australian Communications Sector
Authors: Lee Karen , Wilding Derek
Published: February 2021

This article begins the process of evaluating the adequacy of the procedural and substantive requirements that Australian communications regulators (and hence industry bodies) must satisfy before co-regulatory codes of practice can be registered. It considers if the procedural requirements relating to consumer and public consultation, included in the statutory frameworks that authorise and govern co-regulation in the media, online and telecommunications sectors, ensure co-regulatory rule-making is sufficiently responsive to the interests of consumers and citizens. Drawing on publicly available information about seven industry bodies that have drafted codes of practice and round table discussions with industry, consumers and regulators, the article highlights that the current engagement practices of industry bodies often fall short of the ‘democratic credentials’ of responsiveness. It suggests that the code registration criteria relating to consumer and public consultation must be overhauled if these weaknesses are to be rectified.
The Big Picture: Imagining the Constitution
Authors: Manderson Desmond
Published: February 2021

In Australia, a technocratic minimalist approach to constitutional interpretation leaves little space for what has recently been described as a ‘democratic’ or ‘social’ ‘constitutional imaginary’. The ‘big picture’ of what a constitution is, and why it matters, is systematically reduced to a ‘strict and complete legalism’ that shows little interest in the social and cultural functions of a constitution in the modern world. The ‘dual citizenship’ cases (2017–18), concerning s 44 of the Australian Constitution, provide an exceptional case study. The High Court of Australia’s narrow positivism shielded it from criticism, but at a high cost to Australia’s democratic and social fabric. This article argues that, at a time when the rule of law and the public sphere is under threat as never before, we can and should expect more of our peak legal institutions. A constitutional court without a broader commitment to constitutionalism imperils the legitimacy of the whole constitutional order and of the public sphere.
Assessing Family Outcomes Over Time: Longitudinal Measurement Invariance of the Family Outcomes Survey–Revised
Authors: Waschl Nicolette , Poon Kenneth K. , Chen Mo , Xie Huichao
Published: February 2021

The Family Outcomes Survey–Revised (FOS-R) measures family outcomes of services for young children with disabilities or developmental delays, and it can be used to investigate change in outcome achievement over time. To confirm the validity of FOS-R change scores, it must be established that the FOS-R measures the same construct over time; if so, score changes can be attributed to family outcome achievement. However, if not, interpretation of change scores may be misleading. Caregivers ( N = 349) of Singaporean children with developmental delays receiving early intervention services completed the FOS-R Part A twice, approximately 1 year apart. Factor analysis was used to confirm the structure of the FOS-R Part A and to assess whether the scale measures the same thing across time (i.e., longitudinal measurement invariance). Results provided support for partial longitudinal measurement invariance, indicating that change scores on this scale can be validly interpreted with certain caveats.
Reconceptualizing Assistance for Young Children of Color With Disabilities in an Inclusion Classroom
Authors: Park Soyoung , Lee Sunmin , Alonzo Monica , Adair Jennifer Keys
Published: February 2021

In this article, we draw on DisCrit to critically analyze how a group of early childhood educators approached assistance with young children of color with disabilities in a Head Start inclusion classroom. Using examples from data collected over one school year, we demonstrate how child-centered assistance advances justice for young children of color with disabilities who are often subjected to a surveillance culture in schools. We critique assistance that aligns with the medical model of disability and aims to change young children of color with disabilities to conform to ableist, racist expectations of schooling. We offer examples of assistance practices that contrastingly aim to support young children of color with disabilities to pursue their own interests and purposes. Through these counterstories, we reconceptualize assistance as a practice that can support young children of color with disabilities to be more fully themselves.
Simple Methodology for the Development and Analysis of Local Driving Cycles Applied in the Study of Cars and Motorcycles in Recife, Brazil
Authors: Andrade Guilherme Medeiros Soares de , Araújo Fernando Wesley Cavalcanti de , Santos Maurício Pereira Magalhães de Novaes , Garnés Silvio Jacks dos Anjos , Magnani Fábio Santana
Published: February 2021

Standard driving cycles are usually used to compare vehicles from distinct regions, and local driving cycles reproduce more realistic conditions in specific regions. In this article, we employed a simple methodology for developing local driving cycles and subsequently performed a kinematic and energy analysis. As an application, we employed the methodology for cars and motorcycles in Recife, Brazil. The speed profile was collected using a smartphone (1 Hz) validated against a high precision global positioning system (10 Hz), presenting a mean absolute error of 3 km/h. The driving cycles were thus developed using the micro-trip method. The kinematic analysis indicated that motorcycles had a higher average speed and acceleration (32.5 km/h, 0.84 m/s2) than cars (22.6 km/h, 0.55 m/s2). As a result of the energy analysis, it was found that inertia is responsible for most of the fuel consumption for both cars (59%) and motorcycles (41%), but for motorcycles the aerodynamic drag is also relevant (36%). With regards to fuel consumption, it was found that the standard driving cycle used in Brazil (FTP-75; 2.47 MJ/km for cars and 0.84 MJ/km for motorcycles) adequately represents the driving profile for cars (2.46 MJ/km), and to a lesser extent motorcycles (0.91 MJ/km) in off-peak conditions. Finally, we evaluated the influence of the vehicle category on energy consumption, obtaining a maximum difference of 38% between a 2.0 L sports utility vehicle and a 1.0 L hatchback.
Characteristics of Non-Punitive Employee Safety Reporting Systems for Public Transportation as Abridged from TCRP Report 218
Authors: Staes Lisa , Godfrey Jodi
Published: February 2021

The objective of this research is to produce a compilation of best practices used in non-punitive employee safety reporting (ESR) systems at transit agencies, including examples of how ESR systems benefit transit agencies and their employees. This report will support the public transportation industry’s efforts to institute non-punitive ESR as a critical element in safety management systems implementation. The literature review and background research framed the subsequent narrative and findings from interviews with public transportation agencies. For the purposes of this report, the agency that implemented the ESR system determined successful elements. The researchers did not perform a statistical modeling or evaluation method to determine elemental success; rather, success determination stemmed from the implementing agencies. This report also identifies challenges faced through the implementation phases of ESR system deployment, as presented through the literature review and transit agency case studies. Report findings identify benefits associated with wide dissemination of commonly reported hazards and methods to address them, such as the Aviation Safety Reporting System, or the Confidential Close Call Reporting System. There are also recognized benefits in third-party administration and management of ESR systems through reduced likelihoods of associated punitive or retaliatory consequences. Therefore, researchers determined the public transportation industry could benefit from central repository reporting options for hazards and near-miss information aggregation to further support data-driven decision-making. Additionally, industry evidentiary protections would ensure greater reporting. Finally, the public transportation industry would benefit from a non-punitive ESR toolkit or online resource repository that includes samples for agency customization.
Comparing the Efficacy of Kneeling Stress Radiographs and Weighted Gravity Stress Radiographs to Assess Posterior Cruciate Ligament Insufficiency
Authors: Holliday Charles L. , Martin Ryan , Grant John A.
Published: February 2021

Background:

Kneeling posterior cruciate ligament (PCL) stress radiographs are commonly used to evaluate PCL laxity. Patients, however, report significant pain, and the method’s reproducibility may be challenged due to its dependence on patient body weight distribution to produce posterior tibial displacement. Weighted gravity stress radiography may offer better reproducibility and comfort than the kneeling technique, but its efficacy has not been studied.

Hypothesis:

Weighted gravity PCL stress radiographs will be more comfortable and produce similar measurements of side-to-side difference in posterior tibial displacement when compared with the kneeling technique.

Study Design:

Cohort study (diagnosis); Level of evidence, 3.

Methods:

A total of 40 patients with nonoperatively or >6 months postoperatively treated PCL injuries (isolated or multiligamentous) underwent bilateral stress radiographs. Weighted gravity and kneeling stress radiographs were acquired, in random order, for each patient, as well as side-to-side difference in posterior tibial displacement between each knee, patient-reported visual analog scale knee pain (100 mm), time to acquire the images, and patient preference for technique. Paired t tests were used to compare the side-to-side difference, pain score, and time to complete the radiographs.

Results:

There was no difference between the 2 radiographic methods in the mean side-to-side difference (gravity: 6.45 ± 4.61 mm, kneeling: 6.82 ± 4.60 mm; P = .72), time required to acquire radiographs (kneeling: 307.3 ± 140.5 seconds, gravity: 318.7 ± 151.1 seconds; P = .073), or number of radiographs taken to obtain acceptable images (kneeling: 3.6 ± 1.6, gravity: 3.7 ± 1.7; P = .73). Patients reported significantly less knee pain during the weighted gravity views (kneeling: 31.8 ± 26.6, gravity: 4.0 ± 12.0; P < .0001). Of the patients, 88% preferred the weighted gravity method.

Conclusion:

Weighted gravity stress radiographs produce similar side-to-side differences in posterior tibial translation compared with the kneeling stress technique, but do not rely on patient weightbearing and provide significantly better patient comfort. Clinicians should therefore consider the use of weighted gravity stress radiographs in clinical practice to minimize the pain associated with stress radiography while allowing for accurate decision making.
A novel protocol to reduce bleeding associated with alteplase treatment of HVAD pump thrombosis
Authors: Lewis Tyler C , Emmarco Amy , Gidea Claudia G , Reyentovich Alex , Smith Deane E , Moazami Nader
Published: February 2021

Pump thrombosis remains a feared complication for patients implanted with durable left ventricular assist devices. Optimal treatment is unknown, but consists of either pharmacologic fibrinolysis or surgical pump exchange. Fibrinolysis is less invasive, but carries a significant risk of intracerebral hemorrhage. We present four cases of LVAD pump thrombosis successfully treated with a novel protocol that consists of low-dose four-factor prothrombin complex concentrate to reverse baseline INR elevation prior to alteplase administration to minimize the risk for intracerebral hemorrhage.
Evaluating science: Opening a debate
Authors: Jaclin David , Wagner Peter
Published: February 2021

This article briefly reviews the long-lasting commitment of Social Science Information to the critical analysis of orders of knowledge and the conditions for their creation to, subsequently, reflect on the current co-existence of a plurality of orders of justification across society, including the institutions of knowledge production. Furthermore, it suggests that recent social transformations have accentuated an asymmetry within this plurality, namely towards those forms of judgement that operate with quantitative measures and that are geared towards enhancing performance.
Material model assessment in Ti6Al4V machining simulations with FEM
Authors: Ribeiro-Carvalho Sílvia , Horovistiz Ana , Davim J Paulo
Published: February 2021

Ti6Al4V alloy is a well-known difficult-to-cut material used in different industrial applications, to achieve the expected component quality, proper definition and control of the machining process parameters must be accomplished. To address this problem, simulations with finite element method (FEM) seem to be an interesting engineering tool to model and optimize machining processes. Nevertheless, the model capability in capturing the behaviour observed in real machining processes is associated with the definition of the model and parameters that describe the workpiece flow stress. This contribution aimed to study the performance of built-in AdvantEdge-2D™ material laws applied in Ti6Al4V orthogonal cutting simulations under dry conditions. The numerical models were created under three levels of cutting speed, a constant feed rate and depth-of-cut, a variable tool rake angle (of 20° and −6°/0°), but also using four Ti6Al4V constitutive laws, namely, one suggested in AdvantEdge™ library, a Johnson-Cook (JC) model, a Power law (PL) and a PL coupled with ductile damage model. Experimental results were used to assess the numerical models’ accuracy in predicting the machining forces and metal chips. Satisfactory results regarding the machining forces prediction were achieved with all material laws, yet when the damage criterion was coupled with the constitutive laws (PLD and AE standard material law), the simulations were also were able to achieve the expected chip morphology (serrated metal chips).
Public mental health care in colonial Lesotho: themes emerging from archival material, 1918–35
Authors: Thabane Motlatsi
Published: February 2021

This paper identifies some of the themes that emerge from a study of official archival records from 1918 to 1934 on the subject of mental health in colonial Lesotho. They include: difficulties experienced by colonial medical doctors in diagnosing and treating mental illnesses, given the state of medical knowledge in the nineteenth and early twentieth centuries; impact of shortage of financial and other resources on the establishment and operation of medical services, especially mental health care; convergence of social order, financial and medical concerns as influences on colonial approaches to mental health care; and the question of whether Basotho colonial society saw institutionalization of their relatives as ‘hospitalization’ or ‘imprisonment’. Two case studies are presented as preliminary explorations of some of the themes.
Kinodynamic planning with reachability prediction for PTL maintenance robot
Authors: Zheng Xiaoliang , Wu Gongping
Published: February 2021

This article presents a novel method—Dynamic Environment Rapid Search Tree—for power transmission line maintenance robot, which is based on the learned field function of reachability and the genetic best-first policy. Dynamic Environment Rapid Search Tree uses a priori information to optimize the node selection strategy in the rigid–flexible coupling environment with slight perturbation and generates the joint path in the configuration space. While the search tree rapidly extends toward the goal configuration, it effectively avoids the obstacles and greatly reduces the expansion of the irrelevant region. Finally, the joint trajectory considering the dynamic constraints and cost function is given, which provides the reference positions and torques for the robot controller. Traditional planning algorithms are compared with our proposed method under two different operation modes, and the planner is demonstrated on the robot under real settings. The experiment results verify the feasibility and adaptiveness of the proposed algorithm and planner, even in slightly and continuously varying environment.
A District’s Journey of Transformative Leadership: Moving Beyond Open Access to the Improvement, Inclusion, and Success of Students of Color in Advanced Placement
Authors: Cartagena Ed , Slater Charles L.
Published: February 2021

Leadership is a critical component of creating and sustaining a school culture that promotes the inclusion and success of students. The purpose of this study was to examine how school leaders helped to enact and sustain a reformed Advanced Placement (AP) culture designed to increase participation and success of students of color. Building on existing work of transformative leadership, this study describes the experience and challenges of educational leaders in understanding how leadership practices change the AP culture. The case study method examined one mid-sized urban district in Southern California that utilized transformative leadership. The methods included 15 open-ended interviews with educational leaders in a variety of capacities (i.e., district leadership, school administrators, counselors, and teacher leaders). The findings demonstrated critical components leading to deep and meaningful cultural change in AP. The analysis showed leaders in this district, who sought equity, were driven to create meaningful change, and were grounded in the community. Being grounded in the community had a great impact in promoting a transformed culture at the classroom, site, and district level.
Compassion Fatigue Among the Intimate Partner Violence and Sexual Assault Workforce: Enhancing Organizational Practice
Authors: Voth Schrag Rachel J. , Wood Leila G. , Wachter Karin , Kulkarni Shanti
Published: February 2021

Gaps in knowledge related to occupational stress among the intimate partner violence (IPV) and sexual assault (SA) workforce remain. This study examined associations between key risk factors for occupational stress and compassion fatigue among a sample of IPV/SA service providers in the Southwestern United States ( N = 520). Results of the hierarchical regression analysis identified microaggressions, age, recent life stress, direct practice, and workload as factors associated with compassion fatigue. The findings point to the importance of incorporating trauma-informed organizational approaches to address microaggressions, reduce workload, and support staff experiencing recent stress and providing direct services.
The Impact of Managers and Network Interactions on the Integration of Circularity in Business Strategy
Authors: Eikelenboom Manon , de Jong Gjalt
Published: February 2021

Integrating circularity in business strategy is difficult to achieve for companies as it requires impactful changes in core business processes. While research has focused on identifying key barriers, little is known about the organizational attributes that can assist businesses in integrating circularity in their strategies. The purpose of this study is to investigate the implications of organizational managers and network interactions for the integration of circularity in business strategy. Through using survey data from 627 SMEs (small- and medium-sized enterprises) in the Netherlands, this study shows that managers who interpret circularity as an opportunity can have a positive direct and indirect effect on the integration of circularity in a company’s strategy. The results furthermore highlight the importance of circular network interactions for the integration of circularity in business strategy. This article contributes to recent calls for more empirical research into the integration of circularity and offers relevant insights for companies aiming to integrate circularity.
Enhancing Research Through the Use of the Genotype-Tissue Expression (GTEx) Database
Authors: Stanfill Ansley Grimes , Cao Xueyuan
Published: February 2021

Despite a growing interest in multi-omic research, individual investigators may struggle to collect large-scale omic data, particularly from human subjects. Publicly available datasets can help to address this problem, including those sponsored by the NIH Common Fund, such as the Genotype-Tissue Expression (GTEx) database. This database contains genotype and expression data obtained from 54 non-diseased tissues in human subjects. But these data are often underutilized, because users may find the browsing tools to be counterintuitive or have difficulty navigating the procedures to request controlled data access. Furthermore, there is limited knowledge of these resources among nurse scientists interested in incorporating such information into their programs of research. This article outlines the procedures for using the GTEx database. Next, we provide one exemplar of using this resource to enhance existing research by investigating expression of dopamine receptor type 2 ( DRD2) across brain tissues in human subjects.
Spontaneous pulmonary arterial embolization: A rare complication of the silicon-based peripherally inserted central venous catheter (PICC)
Authors: Joga Srujana , Bansal Abhishek , Talwar Vineet , Bothra Sneha J , Dash Prashantha , Goel Varun , Koyyala Venkata Pradeep Babu
Published: February 2021

Peripherally inserted central catheters (PICC) are widely used in oncology for administration of chemotherapy. However, sometimes there may be complications associated with them such as infections, thrombosis and rarely fracture of catheter and embolization of the catheter fragments. Here we report a case of 59-year old gentleman with locally advanced carcinoma of head of pancreas, who had spontaneous fracture of a silicon based PICC and later migration of the catheter fragment through the heart and further into the right pulmonary arterial system. The embolized catheter fragment was retrieved through a vascular snare from the right femoral venous route. This case highlights the fact that silicon PICCs are fragile and have a high risk of spontaneous dislodgement and should be replaced by better alternative polyurethane PICCs.
Study on real-time thermal–mechanical–frictional coupling characteristics of ball bearings based on the inverse thermal network method
Authors: Li Tie-Jun , Wang Meng-Zhuo , Zhao Chun-Yu
Published: February 2021

The real-time thermal–mechanical–frictional coupling characteristics of bearings are critical to the accuracy, reliability, and life of entire machines. To obtain the real-time dynamic characteristics of ball bearings, a novel model to calculate point contact dynamic friction in mixed lubrication was firstly presented in this work. The model of time-varying thermal contact resistance under fit between the ring and the ball, between the ring and the housing, and between the ring and the shaft was established using the fractal theory and the heat transfer theory. Furthermore, an inverse thermal network method with time-varying thermal contact resistance was presented. Using these models, the real-time thermal–mechanical–frictional coupling characteristics of ball bearings were obtained. The effectiveness of the presented models was verified by experiment and comparison.
Punitive ambiguity: State-level criminal record data quality in the era of widespread background screening
Authors: McElhattan David
Published: February 2021

Prior research documents widespread deficiencies in the quality and completeness of official criminal records in the United States. In an era when the social reach of criminal records has expanded to an unprecedented degree, these deficiencies carry serious consequences for criminal record subjects. The present study develops the concept of punitive ambiguity to characterize the burdens of incomplete criminal records and examines how they vary at the state level, providing evidence that punitive ambiguity is racially patterned. Using data from the biennial Surveys of State Criminal History Information Systems, multivariate analyses find that states where African Americans make up larger shares of felony record populations report rap sheet dispositions at significantly lower levels, pairing low criminal record data quality with extensive legally-mandated background screening. The results carry implications for understanding the racialized burdens of a criminal record, as well as broader processes in the development of the American penal state that combine harsh formal punishments with chronic administrative neglect.
Effects of impact fatigue on residual static strength of adhesively bonded joints
Authors: Jalali S. , Ayatollahi M.R. , Akhavan-Safar A. , da Silva L.F.M.
Published: February 2021

In most industrial applications, adhesive joints experience impact fatigue loads in service. The energy of each impact is too low to cause joint failure. Although the repetitive impacts usually do not apparently affect the joints, they can significantly reduce the strength of adhesively bonded structures. Accordingly, understanding the effect of impact fatigue on the residual strength of the bonded components is crucial in real applications. This study deals with this issue where the effect of impact fatigue on the residual static strength of single lap joints is analyzed. To achieve this, the manufactured single lap joints were categorized into four different groups. Group 1 joints were tested under static loading conditions. Joints in group 2 were tested under impact to obtain the impact strength of the single lap joints. To analyze the impact fatigue life of the joints, the single lap joints in group 3 were tested under cyclic impact at different energy levels until failure. To investigate the effect of impact fatigue on the residual static strength of the joints, single lap joints in group 4 were tested under a specific number of impact cycles followed by a static tensile test. Using microscopic analysis, the fracture surfaces of the tested specimens were analyzed. The results showed that cracks initiate from the middle of the bonded area as a result of cyclic impact stress waves. Then, by increasing the number of impacts, a large number of cracks nucleate from the edges of the joints and grow along the width to the middle of the overlap. A 3D finite element method was employed to analyze the stress distribution along the bondline under impact loads.
MPP8 Promotes Proliferation and Restrains Apoptosis in Osteosarcoma by Regulating p38αMAPK Pathway
Authors: Li Tao , Li Na , Wang Lei , Li Jia , Zhang Xin
Published: February 2021

Osteosarcoma is the most common primary bone malignancy. We aim to investigate that role of M-phase phosphoprotein 8 (MPP8) on proliferation and apoptosis in osteosarcoma. Briefly, the current research reported an in vitro study investigating the role MPP8 in OS tumorigenesis. Consequently, we found that the MPP8 expression was upregulated in osteosarcoma tissues and in osteosarcoma cell lines. Interestingly, MPP8 knockdown via shRNA restrained the cell viability and proliferation of U2OS and Saos-2 cells. In addition, MPP8 knockdown promoted the apoptosis of U2OS and Saos-2 cells, while MPP8 overexpression promotes proliferation and inhibited the cell apoptosis of osteosarcoma cells. These results suggested that MPP8 may serve as a contributor for osteosarcoma growth and inhibition of MPP8 may help restrain the development of osteosarcoma. Importantly, we found that MPP8 overexpression suppressed the protein levels of HOXA5, p38αMAPK, increased cell proliferation and inhibited cell apoptosis, while co-transfection with HOXA5 overexpression suppressed the cell proliferation and increased cell apoptosis. These results indicated that MPP8 contributed to cell proliferation and the underlying mechanism might be involved with HOXA5/ p38αMAPK pathway.
Ilio-Femoral Deep Vein Thrombosis Secondary to May-Thurner Syndrome With Ipsilateral Lower Limb Arterio-Venous Graft In-Situ
Authors: Betzler Brjan Kaiji , zhang Li , Chan Kai Siang , Yong Enming , Huang Ivan Kuang Hsin , Lo Zhiwen Joseph
Published: February 2021

Ilio-femoral deep vein thrombosis (DVT) is rare in patients with lower limb arterio-venous grafts due to a state of high blood flow. May-Thurner syndrome (MTS) is an anomaly where the left common iliac vein is compressed by the right common iliac artery. We present a rare case of ilio-femoral deep vein thrombosis in a patient with May-Thurner Syndrome and an underlying arteriovenous graft in-situ who presented with acute lower limb swelling. The patient underwent catheter-directed thrombolysis, pharmaco-mechanical thrombectomy, venoplasty and iliac vein stenting. Follow-up surveillance duplex ultrasound showed patency of the iliac vein stent and arteriovenous graft at 1-year postoperatively.
Advance Xp® Male Sling can be an Effective and Safe Treatment for Post-Prostatectomy Stress Urinary Incontinence Also in Patients with Prior History of External Beam Radiation Therapy: A Multicentric Experience
Authors: Li Marzi Vincenzo , Morselli Simone , Fusco Ferdinando , Baldesi Ramona , Campi Riccardo , Liaci Andrea , Gemma Luca , Morelli Girolamo , Serni Sergio
Published: February 2021

Background. Post-prostatectomy stress urinary incontinence (PPSUI) is one of the major complaints after radical prostatectomy. Transoburator male sling (TMS) placement is indicated in persistent mild to moderate PPSUI. External beam radiation therapy (EBRT) might be a negative prognostic factor for TMS outcomes. Study objective was to analyze EBRT impact on TMS outcome. Methods. We retrospectively investigated patients submitted to TMS for PPSUI, with or without previous EBRT, in two tertiary referral centers since 2010. Objective outcome was measured through ICIQ-SF, 1-hour pad test, and pad per die and subjective improvement through PGI-I. Patients were divided according to EBRT to make in-group and between-group comparisons. Results. Patients were 56, 18 (32.1%) had previous EBRT. Median follow-up was 43.0 months (IQR: 22.3–64.0). TMS was placed at mean 18.8 months (SD 4.6) after EBRT. TMS determined a statistically significant reduction of pads, 1-hour pad test, and ICIQ-SF score ( P<.05). Improvement diminished during long-term follow-up. At last follow-up, 12 patients (21.4%) used 1 safety pad, while 15 (26.8%) used 0 pads. Median PGI-I was 2 (IQR 2–3). Recorded complications were 9 (16.1%) and none exceeded Clavien–Dindo grade 2. There were no differences in outcomes, failures, and complications between groups. TMS failures were 6 (10.7%), 2 of whom in the EBRT group. Four of them (7.1%) subsequently placed an artificial urinary sphincter (AUS). Conclusion. Advance XP© placement seems effective and safe in well-selected patients complaining with PPSUI, even after EBRT. Surgical outcomes slightly deteriorate over time. Further studies are needed in these patients to assess TMS efficacy.
Optical Device to Improve Eyelid Surgery
Authors: Govorkova Maria , Silkiss Rona Z
Published: February 2021

Background. Obtaining symmetry is one of the most critical challenges of bilateral blepharoplasty surgery. Current techniques rely on caliper measurements and the “eye” of the surgeon. This is time-consuming and prone to error. There is a need for a precise and cost-effective surgical guide. Objective. The purpose of this experimental study was to design a device to improve the accuracy of markings in blepharoplasty. Methods. The device, a combination of a camera and pico-projector, creates a mirror image of the marked eye that is projected onto the second eye with a light beam. This allows the reference features in the captured image to be overlaid precisely on the respective features in the second eye. The device concept was tested initially on a mannequin and then on eleven human volunteer subjects. No actual surgeries were performed. The accuracy of the markings was assessed by comparing optical images of one eye to another via a specifically designed computer analysis. Results. The results of this study revealed that the accuracy of guided blepharoplasty markings was superior to that of unguided markings. Conclusion. The proposed device has a potential to improve precision of symmetrical surgical marking in blepharoplasty surgery, greatly reduce surgeon’s time and effort, and ultimately contribute to successful patient outcomes and satisfaction. Additional modifications are forthcoming to prepare the device for clinical use.
Instrumental learning in social interactions: Trait learning from faces and voices
Authors: Bradshaw Abigail R , McGettigan Carolyn
Published: February 2021

Recent research suggests that reinforcement learning may underlie trait formation in social interactions with faces. The current study investigated whether the same learning mechanisms could be engaged for trait learning from voices. On each trial of a training phase, participants ( N = 192) chose from pairs of human or slot machine targets that varied in the (1) reward value and (2) generosity of their payouts. Targets were either auditory (voices or tones; Experiment 1) or visual (faces or icons; Experiment 2) and were presented sequentially before payout feedback. A test phase measured participant choice behaviour, and a post-test recorded their target preference ratings. For auditory targets, we found a significant effect of reward only on target choices, but saw higher preference ratings for more generous humans and slot machines. For visual targets, findings from previous studies were replicated: participants learned about both generosity and reward, but generosity was prioritised in the human condition. These findings provide one of the first demonstrations of reinforcement learning of reward with auditory stimuli in a social learning task, but suggest that the use of auditory targets does alter learning in this paradigm. Conversely, reinforcement learning of reward and trait information with visual stimuli remains intact even when sequential presentation introduces a delay in feedback.
Ondansetron reduces the incidence of hypotension after spinal anaesthesia in non-caesarean delivery: A systematic review and meta-analysis
Authors: D Tubog Tito , S Bramble Richard
Published: February 2021

The incidence rates of spinal anaesthesia-induced hypotension vary depending on the surgical procedures. This systematic review and meta-analysis evaluates the efficacy of prophylactic ondansetron in reducing the incidence of spinal anaesthesia-induced hypotension in non-caesarean delivery. Thirteen trials consisting of 1166 patients were included for analysis. Compared to placebo, there is a low quality of evidence that ondansetron was effective in reducing the incidence of spinal anaesthesia-induced hypotension (RR 0.62, 95% CI 0.44 to 0.87; p = 0.005) and bradycardia (RR 0.54, 95% CI 0.32 to 0.90; p = 0.02). We also found a moderate quality of evidence that ondansetron lowered the number of rescue ephedrine (RR 0.61, 95% CI 0.43 to 0.87; p = 0.007). Patients treated with ondansetron have higher mean arterial pressure 15 to 20 minutes after spinal anaesthesia induction and higher systolic arterial pressure 5, 10, 15 and 20 minutes after spinal anaesthesia. The evidence suggests that prophylactic administration of ondansetron results in the reduction of the incidence of spinal anaesthesia-induced hypotension, bradycardia and rescue ephedrine in patients undergoing non-caesarean delivery under spinal anaesthesia.
The post-ICU presentation screen (PICUPS) and rehabilitation prescription (RP) for intensive care survivors part I: Development and preliminary clinimetric evaluation
Authors: Turner-Stokes Lynne , Corner Evelyn J , Siegert Richard J , Brown Craig , Wallace Sarah , Highfield Julie , Bear Danielle , Aitken Leanne M , Montgomery Hugh , Puthucheary Zudin
Published: February 2021

Background

Patients who have had prolonged stays in intensive care have ongoing rehabilitation needs. This is especially true of COVID-19 ICU patients, who can suffer diverse long-term ill effects. Currently there is no systematic data collection to guide the needs for therapy input for either of these groups nor to inform planning and development of rehabilitation services. These issues could be resolved in part by the systematic use of a clinical tool to support decision-making as patients progress from the Intensive Care Unit (ICU), through acute hospital care and onwards into rehabilitation. We describe (i) the development of such a tool (the Post-ICU Presentation Screen (PICUPS)) and (ii) the subsequent preparation of a person-centred Rehabilitation Prescription (RP) to travel with the patient as they continue down the care pathway.

Methods

PICUPS development was led by a core group of experienced clinicians representing the various disciplines involved in post-ICU rehabilitation. Key constructs and item-level descriptors were identified by group consensus. Piloting was performed as part of wider clinical engagement in 26 acute hospitals across England. Development and validation of such a tool requires clinimetric analysis, and this was based on classical test theory. Teams also provided feedback about the feasibility and utility of the tool.

Results

Initial PICUPS design yielded a 24-item tool. In piloting, a total of 552 records were collated from 314 patients, of which 121 (38.5%) had COVID-19. No obvious floor or ceiling effects were apparent. Exploratory factor analysis provided evidence of uni-dimensionality with strong loading on the first principal component accounting for 51% of the variance and Cronbach’s alpha for the full-scale score 0.95 – although a 3-factor solution accounted for a further 21%. The PICUPS was responsive to change both at full scale- and item-level. In general, positive responses were seen regarding the tool’s ability to describe the patients during their clinical course, engage and flag the relevant professionals needed, and to inform what should be included in an RP.

Conclusions

The PICUPS tool has robust scaling properties as a clinical measure and is potentially useful as a tool for identifying rehabilitation needs as patients step down from ICU and acute hospital care.
Shape Shifting Across Social Media
Authors: Davidson Brittany I. , Joinson Adam N.
Published: February 2021

Individuals change and adapt their behavior according to their social situation (e.g., transitioning from work to home). However, how does this shape shifting of self-presentations and identity translate into various online platforms? This exploratory study utilizes a novel and mixed methodological approach to better understand user behavior across social media platforms. We interviewed 22 participants and employed a repertory grid technique to reveal deeper similarities and differences in behavior across various online platforms. We found that users had a variety of strategies for managing multiple audiences across multiple platforms. Almost all participants actively separated their professional (e.g., LinkedIn) and social (e.g., Facebook or Instagram) oriented platforms typically by self-censorship of posts rather than utilizing audience management tools. Via the repertory grid technique, we revealed a number of more subtle nuances of how participants reflect on how and why they maintain a number of social media identities.
Fulminant Enteroviral Myocarditis in a Newborn Accompanying Maternal SARS-CoV-2 Infection
Authors: Fick Tyler A. , Morris Shaine A. , Tume Sebastian C. , Stafford Tiffany D. , Aagaard Kjersti , Schady Deborah , Molossi Silvana
Published: February 2021

We present a case of fulminant myocarditis in a preterm neonate born to a SARS-CoV-2-infected mother with COVID-19 disease. Despite complete separation after birth, cardiogenic decompensation initiated on day of life 7. Although the neonate tested negative for SARS-CoV-2, enterovirus viremia accompanied cardiac dysfunction, multiorgan failure, and neonatal death within 36 hours.
Time to Surgical Treatment for Metastatic Spinal Disease: Identification of Delay Intervals
Authors: van Tol Floris R. , Versteeg Anne L. , Verkooijen Helena M. , Öner F. Cumhur , Verlaan Jorrit-J
Published: February 2021

Study Design:

Retrospective cohort study

Objectives:

Minimizing delays in referral, diagnosis and treatment of patients with symptomatic spinal metastases is important for optimal treatment outcomes. The primary objective of this study was to investigate several forms of delay from the onset of symptoms until surgical treatment of spinal metastases for patients with and without a known preexisting known malignancy.

Methods:

All patients receiving surgical treatment for spinal metastases in a single tertiary spine center were identified. Referral patterns were reconstructed and the total delay was divided into 4 categories: patient delay (onset of symptoms until medical consultation), diagnostic delay (medical consultation until diagnosis), referral delay (diagnosis until referral to spine surgeon) and treatment delay (referral spine to surgeon until treatment). These intervals were compared between patients with and without a known preexisting malignancy.

Results:

The median total delay was 99 days, patient delay 19 days, diagnostic delay 21,5 days, referral delay 7 days, treatment delay 8 days and diagnosis and treatment delay combined 18,5 days. No difference in total delay was observed between patients with and without a known preexisting malignancy. Total delay was not significantly associated with patient age, sex, oncological history, tumor prognosis and spinal level of the tumor.

Conclusions:

Patients with symptomatic spinal metastases experience considerable delays, even after metastatic spinal disease has been diagnosed, regardless of a preexisting malignancy. By identifying and eliminating the causes of these delays, diagnosis, referral and treatment may be expedited leading to improved patient outcome.
Severe Acute Colonic Diverticular Bleeding: The Efficacy of Rapid Bowel Preparation With 1 L Polyethylene Glycol Ascorbate Solution and Direct Endoscopic Hemoclipping for Successful Hemostasis
Authors: Malik Adnan , Inayat Faisal , Goraya Muhammad Hassan Naeem , Shahzad Eman , Zaman Muhammad Adnan
Published: February 2021

Colonic diverticular bleeding is an established cause of painless acute lower gastrointestinal hemorrhage. Colonoscopy, performed within 24 hours of presentation, is the usual initial diagnostic procedure in such patients. In order to improve the diagnostic and therapeutic yield of urgent colonoscopy, adequate colon cleansing is required in patients with signs and symptoms of ongoing bleeding. We hereby delineate the importance of rapid bowel preparation with a very-low-volume novel 1 L polyethylene glycol ascorbate solution in the setting of acute severe colonic diverticular bleeding. The 1-L regimen may demonstrate similar efficacy to that of traditional higher volume preparations and it can substantially reduce the time for bowel preparation. Therefore, it can be considered for bowel purge when colonoscopy has to be rapidly planned in critical patients. This article further illustrates that the endoscopic technique using epinephrine followed by direct hemoclipping may be added to the armamentarium for acute colonic diverticular hemorrhage as the first treatment, especially in elderly patients with multiple comorbid conditions. While ample evidence surrounding the efficacy of the clipping method persists in the literature, rapid bowel preparation with 1 L polyethylene glycol ascorbate solution’s imperativeness to achieve hemostasis with direct hemoclipping remains elusive.
Race, Climate, and Turnover: An Examination of the Teacher Labor Market in Rural Georgia
Authors: Williams Sheneka M. , Swain Walker A. , Graham Jerome A.
Published: February 2021

Teacher turnover across the country presents a persistent and growing challenge for schools and districts, with the highest rates of turnover geographically concentrated in the American South. Research on teacher staffing and turnover problems consistently highlight two subsets of schools as struggling to attract and retain well-credentialed, effective educators—predominantly Black schools and rural schools. However, research has rarely explicitly examined the schools that meet both these criteria. We use administrative records and unique climate survey data from Georgia to examine how the intersecting roles of race, money, and school climate shape evolving teacher turnover patterns in rural schools. Findings suggest that while teacher mobility is generally less common in rural schools, considerable inequities exist within the rural space, with majority Black rural schools bearing far more of the brunt of rural teacher turnover. Among rural teachers, Black teachers have higher mobility rates—more likely to make interdistrict moves and to exit rural settings for teaching opportunities in urban and suburban contexts. However, in majority-Black rural schools, higher salaries and school climate factors, such as relational climate and parental involvement, were strong predictors of retention, even after controlling for a rich set of covariates.
“Wait for a permanent contract”: The temporal politics of (in)fertility as an early career researcher
Authors: Hughes Sarah M
Published: February 2021

The impetus for this intervention comes from my own experiences of advice to ‘wait for a permanent contract’ before trying to conceive a child. I contend that this considerate guidance, frequently given to Early Career Researchers, nonetheless re-inscribes a linear capitalist temporality, and that there is a need to resist this binding of the temporalities of (in)fertility to the metrics of the neoliberal academy. I suggest that to promote ‘waiting’ negates the nonlinear, everyday and intimate politics of our varied, embodied experiences of (in)fertility. It is also grounded within problematic assumptions: first, that waiting is linear; that we will arrive at a permanent job in the future, if we persist with the present; and second, that our (in)fertility is known to us, that we are able to, and will, make a rational decision to conceive a child. These are pervasive assumptions with deeply personal implications. Moreover, they are compounded by the short-term contracts, and expectations of institutional mobility that characterise many experiences of UK academia. My hope for this piece is that it invites geographers to further explore embodied politics of (in)fertility.