bluuebunny/crossref_metadata_2025_split huggingface dataset:
Toward More Efficient Statistical Debugging with Abstraction Refinement
Authors: Zuo Zhiqiang , Niu Xintao , Zhang Siyi , Fang Lu , Khoo Siau Cheng , Lu Shan , Sun Chengnian , Xu Guoqing Harry 
Published: June 2022

Debugging is known to be a notoriously painstaking and time-consuming task. As one major family of automated debugging, statistical debugging approaches have been well investigated over the past decade, which collect failing and passing executions and apply statistical techniques to identify discriminative elements as potential bug causes. Most of the existing approaches instrument the entire program to produce execution profiles for debugging, thus incurring hefty instrumentation and analysis cost. However, as in fact a major part of the program code is error-free, full-scale program instrumentation is wasteful and unnecessary.
This article presents a systematic abstraction refinement-based pruning technique for statistical debugging. Our technique only needs to instrument and analyze the code partially. While guided by a mathematically rigorous analysis, our technique is guaranteed to produce the same debugging results as an exhaustive analysis in deterministic settings. With the help of the effective and safe pruning, our technique greatly saves the cost of failure diagnosis without sacrificing any debugging capability.
We apply this technique to two different statistical debugging scenarios: in-house and production-run statistical debugging. The comprehensive evaluations validate that our technique can significantly improve the efficiency of statistical debugging in both scenarios, while without jeopardizing the debugging capability.
Analysis and Comparison of Motion Biomechanics Characteristics of Squat Jump and Half-Squat Jump
Authors: Zhao Manman , Zhang Jinjin 
Published: June 2022

In order to study the biomechanical characteristics of squat jump and half-squat jump, analysis and comparison were made. This paper tests and analyzes the kinematics and dynamics of 63 young men’s squat jump, and synchronously collects the kinematics and dynamics data of subjects in the process of weight-bearing squat, in-situ free jump, and high platform landing. The experimental results showed that there was significant difference in knee joint angle at the time of toe off (

P

< 0.05), and there was significant difference in ankle joint angle at the time of toe off (

P

< 0.05). The time law of squat jump and semi squat jump in vertical jump was the same. In vertical jump, the reaction time law of squat jump and semi squat jump is the same, and the recovery standing time is the longest, followed by the take-off time and reaction time. The two vertical jump methods have no effect on the height, time, and speed of exercise take-off.
The Merger Mystery
Authors: Meeks Geoff , Meeks J. Gay 
Published: June 2022

Statistical studies over the last forty-five years show that, although there are success stories, very many mergers and acquisitions do not result in the increased operating profits that economics textbooks would lead one to expect. As consultancy McKinsey have put it, ‘Anyone who has researched merger success rates knows that roughly 70% fail’. Yet—mysteriously—M&A activity has boomed across the globe, with a forty-fold increase in deals done each year now compared with four decades ago, in spite of the adverse general evidence. How can it be that talented, energetic, highly skilled, law-abiding, income-maximising participants in the M&A market will often promote mergers that lead to no operating gains, frequently with adverse effects on the wider economy too?
Drawing on findings from a wealth of statistical analyses and case evidence from many businesses, the book presents answers to this merger mystery. In a synthesis of ideas from several disciplines, solutions are detected in misaligned incentives, distorted financial engineering and information asymmetry. By revealing how weaknesses at multiple points can interact and cumulate to produce inefficient outcomes, the discussion serves as a corrective to the overwhelmingly positive tone of most commentary on M&A, whilst also advocating changes in participants’ contracts, in taxation, and in regulation which could significantly reduce the number of mergers that fail.
Designed to be accessible to a wide readership, the book will be of interest to investors, to M&A practitioners and commentators, to researchers and students of economics, political economy, finance, management and accounting, and—importantly—to policy makers working in these areas.
Exploring UTA Effectiveness: Leveraging Undergraduate Teaching Assistants for Student Learning and Help-Seeking
Authors: Driver Persis , Caldwell Tracy L. , Grunert Lance 
Published: June 2022

Background Undergraduate teaching assistants (UTAs) are associated with increased student performance and belongingness. Yet, when given a choice, not all students leverage UTA-facilitated opportunities equally. Objective This study explores motivational and contextual factors that underlie individual differences in students’ willingness to attend UTA facilitated supplemental workshops and the impact of such engagement on their achievement. Method Undergraduates ( N = 112) in research and statistics courses completed measures of help-seeking, social fit, and expectancy value three times across the semester. Responses were compared to students’ attendance records, exam scores, and open-ended responses evaluating benefits and challenges of working with UTAs. Results Given the choice, a majority of students chose to attend workshops and consistent participation was positively correlated with exam performance. Yet help-seeking intentions, social fit, value beliefs, and perceived obstacles rather than incentives or perceived costs explained individual differences in workshop participation itself. Conclusion UTAs can improve peer’s achievement but simply providing students with opportunities to interact with UTAs is inadequate. Scaffolding active participation in UTA-led workshops requires addressing students’ motivational orientations. Teaching Implications To improve participation in peer-led opportunities, UTAs and faculty must generate an integrated model emphasizing value, normalizing help-seeking, and working to remove barriers.
Incidence and risk factors of postoperative nausea and vomiting in lung cancer patients following lobectomy and application of analgesic pumps
Authors: Wu Suwen , Gan Chune , Huang Xiaoling , Jiang Dongping , Xu Ye , Liao Yixia , Ma Fen , Hong Yutong , Duan Hao , Lin Peng 
Published: June 2022

Objective To investigate the occurrence rate and risk factors of postoperative nausea and vomiting (PONV) in lung cancer patients following lobectomy and application of analgesic pumps. Methods This retrospective study reviewed clinical data from patients that had undergone lobectomy for lung cancer under general anaesthesia. The risk factors of PONV were analysed using binary logistic regression models. Results A total of 203 patients (97 females) were enrolled. The rate of PONV was 29.6% (60 of 203 patients) for all patients, 42.3% (41 of 97 patients) for female patients and 17.9% (19 of 106 patients) for male patients. Female patients undergoing thoracotomy (odds ratio [OR] 7.770, 95% confidence interval [CI] 1.747, 34.568) or having surgery durations ≥120 min (OR 4.493, 95% CI 1.502, 12.851) were significantly more susceptible to PONV. The risk of PONV in female patients that received postoperative dolasetron (100 mg, once a day) was significantly lower (OR 0.075, 95% CI 0.007, 0.834). For male patients, the risk of PONV was significantly lower in those with a body mass index ≥24 kg/m2 (OR 0.166; 95% CI 0.035, 0.782). Conclusion Female and male patients have different risk factors for PONV following lobectomy for lung cancer and application of analgesic pumps.
How aging affects opportunity-necessity entrepreneurship: Demographic and perceptual view
Authors: Chang Yu-Yu , Sanchez-Loor Daniel A , Hsieh Hui-Ching , Chang Wei-Shiun 
Published: June 2022

Drawing upon the social-cognitive view and the intentionality-based entrepreneurial behavior model, this study investigates how individuals’ demographics and perceptions affect entrepreneurial intentions and how the effects vary along with age. The data were collected from the Global Entrepreneurship Monitor 2015, which includes 35,141 respondents from 60 countries. Our finding suggests an inverted U-shaped relationship between age and both types of entrepreneurship. We also found a gender gap indicating that women and men are more likely to engage in necessity and opportunity entrepreneurship, respectively. Moreover, higher income and education lower the probability of necessity entrepreneurship, whereas higher income motivates opportunity entrepreneurship. JEL Classification: L26, M13
Association Between Collision Sport Career Duration and Gait Performance in Male Collegiate Student-Athletes
Authors: Oldham Jessie R. , Lanois Corey J. , Caccese Jaclyn B. , Crenshaw Jeremy R. , Knight Christopher A. , Berkstresser Brant , Wang Francis , Howell David R. , Meehan William P. , Buckley Thomas A. 
Published: June 2022

Background: Investigations of estimated age of first exposure to repetitive head impacts from collision and contact sports have shown no associations with neurocognitive or neurobehavioral function at the collegiate level, but the effect of career duration may be a more comprehensive factor. Understanding whether longer career duration influences gait performance would provide insights into potential neurological impairment. Purpose: To examine the relationship between career duration of collision sports and single/dual-task gait performance in collegiate student-athletes. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We recruited 168 male student-athletes from collision sports: football, lacrosse, ice hockey, and wrestling (mean ± SD age, 19.2 ± 1.3 years; height, 184.5 ± 7.2 cm; mass, 94.3 ± 15.9 kg; estimated age of first exposure, 8.6 ± 3.1 years; career duration, 10.6 ± 3.0 years). All participants completed a baseline single- and dual-task gait assessment before the start of their athletic season. Inertial measurement units were used to measure gait speed and stride length. During the dual task, participants were asked to perform working memory cognitive tasks while walking. The dependent variables were single/dual-task gait speed and stride length, cognitive accuracy, and dual-task cost. The relationship between career duration, analyzed as a continuous variable, and the dependent variables was analyzed using a linear regression. Results: There were no significant associations between career duration and single-task gait speed (1.16 ± 0.16 m/s; β = −0.004; P = .35; 95% CI = −0.012 to 0.004; η2 = 0.005) or dual-task gait speed (1.02 ± 0.17 m/s; β = −0.003; P = .57; 95% CI = −0.011 to 0.006; η2 = 0.002). There were also no significant associations between career duration and single/dual-task stride length, cognitive accuracy, or dual-task cost. Conclusion: Career duration among collegiate collision sport athletes was not associated with single- or dual-task gait performance, suggesting that a greater exposure to repetitive head impacts is not detrimental to dynamic postural control at the college level. However, the effects of diminished gait performance over the lifetime remain to be elucidated.
Investigating the Impact of Patient-Related Factors on Speech Outcomes at 5 Years of Age in Children With a Cleft Palate
Authors: Butterworth Sophie , Fitzsimons Kate J , Medina Jibby , Britton Lorraine , Van Eeden Stephanie , Wahedally Hussain , Park Min Hae , van Der Muelen Jan , Russell Craig J H 
Published: June 2022

To investigate the relationship between patient-related factors (sex, cleft type, cleft extent, and Robin Sequence [RS]) and speech outcome at 5 years of age for children born with a cleft palate ±  lip (CP ± L). 3157 Children (1426 female:1731 male) with a nonsyndromic CP ± L, born between 2006 and 2014 in England, Wales, and Northern Ireland. Perceptual speech analysis utilized the Cleft Audit Protocol for Speech–Augmented (CAPS-A) rating and UK National Speech Outcome Standards: Speech Standard 1 (SS1)—speech within the normal range, SS2a—no structurally related speech difficulties or history of speech surgery, and SS3—speech without significant cleft-related articulation difficulties. Odds of achieving SS1 were lower among boys (aOR 0.771 [CI 0.660-0.901]), those with clefts involving the lip and palate (vs palate only) (UCLP—aOR 0.719 [CI 0.591-0.875]; BCLP—aOR 0.360 [CI 0.279-0.463]), and clefts involving the hard palate (incomplete—aOR 0.701 [CI 0.540-0.909]; complete—aOR 0.393 [CI 0.308-0.501]). Similar relationships with these patient factors were observed for SS3. SS2 was affected by the extent of hard palate involvement (complete; aOR 0.449 [CI 0.348-0.580]). Although those with CP and RS were less likely to meet all 3 standards than those without RS, odds ratios were not significant when adjusting for sex and cleft extent. Sex, cleft type, and extent of hard palate involvement have a significant impact on speech outcome at 5 years of age. Incorporating these factors into risk-adjustment models for service-level outcome reporting is recommended.
Machine learning-based classification of arterial spectral waveforms for the diagnosis of peripheral artery disease in the context of diabetes: A proof-of-concept study
Authors: Normahani Pasha , Sounderajah Viknesh , Mandic Danilo , Jaffer Usman 
Published: June 2022

Background: Point-of-care duplex ultrasound has emerged as a promising test for the diagnosis of peripheral artery disease (PAD). However, the interpretation of morphologically diverse Doppler arterial spectral waveforms is challenging and associated with wide inter-observer variation. The aim of this study is to evaluate the utility of machine learning techniques for the diagnosis of PAD from Doppler arterial spectral waveforms sampled at the level of the ankle in patients with diabetes. Methods: In two centres, 590 Doppler arterial spectral waveform images (PAD 369, no-PAD 221) from 305 patients were prospectively collected. Doppler arterial spectral waveform signals were reconstructed. Blinded full lower-limb reference duplex ultrasound results were used to label waveform according to PAD status (i.e., PAD, no-PAD). Statistical metrics and multiscale wavelet variance were extracted as discriminatory features. A long short-term memory (LSTM) network was used for the classification of raw signals, and logistic regression (LR) and support vector machines (SVM) were used for classification of extracted features. Signals and feature vectors were randomly divided into training (80%) and testing (20%) sets. Results: The highest overall accuracy was achieved using a logistic regression model with a combination of statistical and multiscale wavelet variance features, with 88% accuracy, 92% sensitivity, and 82% specificity. The area under the receiver operating characteristics curve (AUC) was 0.93. Conclusion: We have constructed a machine learning algorithm with high discriminatory ability for the diagnosis of PAD using Doppler arterial spectral waveforms sampled at the ankle vessels.
‘I felt like I deserved it because I was autistic’: Understanding the impact of interpersonal victimisation in the lives of autistic people
Authors: Pearson Amy , Rose Kieran , Rees Jon 
Published: June 2022

Research suggests that there is a high prevalence of interpersonal violence and victimisation within the autistic population, and that this accounts for poor mental health outcomes. This study aimed to examine the impact of interpersonal violence and victimisation on autistic adults from their own perspective and explore what helps or hinders their recovery. In total, 102 autistic adults completed either an online survey or a spoken interview about their experiences of interpersonal violence and victimisation. We analysed the data using a thematic analysis, and found four themes: (1) The usual for autism (expectations of victimisation, experiences of othering), (2) Personhood revoked: The cost of living (being part of a neurominority, trauma, masking and burnout), (3) Unpacking the baggage (impact of hermeneutical injustice) and (4) ‘ If you want to make an apple pie from scratch, you have to invent the universe first’ (structural inequality/power dynamics, support and community). Findings highlight the importance of considering the relationship between stigma and victimisation, and the relationship between trauma, masking, and burnout in autistic people. Reducing barriers to support and recovery are contingent on reducing structural inequality and providing better training about autistic people to frontline professionals. Lay abstract Research suggests that autistic people are more likely to be hurt by someone they know (e.g. a friend or a family member) compared to non-autistic people. In this study, we wanted to know how being hurt by someone you know affects autistic people, and what might help them recover. In total, 102 autistic people took part in an interview, where we asked questions like how being hurt by people they know had made them feel and whether anyone they had asked for help had done a good job of supporting them. We analysed what they had said using thematic analysis, which involved reading what everyone said and looking for common themes. Our findings showed that a lot of autistic people think it is normal to be hurt by people you know because it has happened to them so much. This makes many autistic people feel like they need to mask parts of themselves to stay safe, but this also makes them really exhausted. It took some people a long time to realise what had happened to them was wrong, and it was hard to ask for help. People who did ask for help often had bad experiences with professionals (e.g. police) who did not know much about autistic people. They said better support would come from creating more autistic-run support groups and educating people about autism. These findings are important for working out how to help people who have been hurt by people they know.
Multicenter Comparative Analysis of Late Open Conversion in Patients With Adherence and Nonadherence to Instructions for Use Endovascular Aneurysm Repair
Authors: Lopez-Espada Cristina , Linares-Palomino Jose , Guerra Requena Mercedes , Serrano Hernando Francisco Javier , Iborra Ortega Elena , Fernández-Samos Rafael , Zanabili Al-Sibbai Amer , González Cañas Elena , Rodriguez Sánchez Jose Mª , Zaragozá García Jose Miguel , García León Andrés , Manzano Grossi Soledad , de Benito Luis , Gil Sala Daniel , Revuelta Mariño Livia 
Published: June 2022

Purpose: The widespread adoption of endovascular aneurysm repair (EVAR) as preferred treatment modality for abdominal aortic aneurysm (AAA) has enlarged the number of patients needing open surgical conversion (OSC). The relationship between adherence to Instructions For Use (IFU) and EVAR long-term outcomes remains controversial. The aim of this study is to compare preoperative differences and postoperative outcomes between EVAR patients not adjusted to IFU and adjusted to IFU who underwent OSC. Methods: This multicenter retrospective study reviewed 33 explanted EVARs between January 2003 and December 2019 at 14 Vascular Units. Patients were included if OSC occurred >30 days after implantation and excluded if explantation was performed to treat an endograft infection, aortic dissection, or traumatic transections. Variables analyzed included baseline characteristics, adherence to IFU, implant and explant procedural details, secondary reinterventions, and postoperative outcomes. Results: Fifteen explanted patients (15/33, 45.5%) were identified not accomplished to IFU (out-IFU) at initial EVAR vs 18 explanted patients adjusted (in-IFU). During follow-up, a mean of 1.73±1.2 secondary reinterventions were performed, with more type I endoleaks treated in the subgroup out-IFU: 16.7% vs 6.3% in-IFU patients and more type III endoleaks (8.3% vs 0%). Patients out-IFU had shorter mean interval from implant to explant: 47.60±28.8 months vs 71.17±48. Type II endoleak was the most frequent indication for explantation. Low-flow endoleaks (types II, IV, V) account for 44% of indications for OSC in subgroup of patients in-IFU, compared with 13.3% in patients out-IFU and high-flow endoleaks (types I and III) were the main indication for patients out-IFU (33.3% vs 16.7% in-IFU). Total endograft explantation was performed in 57.5% of cases (19/33) and more suprarenal clamping was required in the subgroup out-IFU. Overall, 30-day mortality rate was 12.1% (4/33): 20% for patients out-IFU and 5.6% in-IFU. Conclusions: In our experience, type II endoleak is the most common indication for conversion and differences have been found between patients treated outside IFU with explantation taking place earlier during follow-up, mainly due to high-flow endoleaks and with higher mortality in comparison with patients adjusted to IFU. Ongoing research is required to delve into these differences.
Effectiveness of the Rotarex Excisional Atherectomy System in Both Subacute and Chronic Aortoiliac Endograft Thrombosis: An Innovative Option for the Modern Endovascular Surgeon Toolkit
Authors: Simonte Gioele , Fino Gianluigi , Casali Francesco , Parlani Gianbattista , Lenti Massimo , Isernia Giacomo 
Published: June 2022

Purpose: To report a successful revascularization case using the Rotarex™S atherothrombectomy system in a recent iliac limb thrombosis, and chronic hypogastric stent obstruction after previous aortoiliac aneurysm endovascular repair (EVAR). Case Report: A 72-year-old patient was treated for recent right iliac limb thrombosis and left iliac branch chronic hypogastric stent occlusion, 5 years after EVAR. A total endovascular approach, using both upper extremity and femoral vascular access, was settled with 2 Rotarex™S (6Fr and 10Fr) devices. The Rotarex™S catheters removed most of the intraluminal material, allowing additional endografts and bare metal stents to be deployed to support a new healthy lumen surface. Conclusion: The total endovascular approach provided by the Rotarex™S device appears to be safe and effective in treating aortoiliac endografts occlusions, both in subacute and chronic phases. Larger studies could highlight differences and eventual advantages compared with more traditional solutions.
Drug-Coated Balloon Angioplasty for Thoracic Great Vessel Stenosis Due to Takayasu Arteritis With 1-Year Follow-up
Authors: Nicholas William J. , Maloney Thomas G. 
Published: June 2022

Purpose: Takayasu arteritis is a large-vessel vasculitis in women of childbearing age that affects large vessels including the aorta and its main branches. Inflammation of arteries can produce lesions that lead to occlusion, stenosis, or aneurysms which can lead to complications. If signs of organ dysfunction are present, vascular intervention may be necessary. Case Report: In this article, we present a case of Takayasu arteritis with high-grade stenosis of all the great vessels of the thoracic aorta treated with drug-coated balloon (DCB) angioplasty and stenting requiring multiple follow-up interventions over a 1-year follow-up. Conclusion: The DCB angioplasty is a potential endovascular treatment for thoracic great artery stenosis in Takayasu arteritis that could be further explored.