bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exotic wave patterns in Riemann problem of the high‐order Jaulent–Miodek equation: Whitham modulation theory
Authors: Liu Yaqing , Wang Deng‐Shan 
Published: June 2022

AbstractThe Riemann problem of the high‐order Jaulent–Miodek (JM) equation with initial data of step discontinuity is explored by Whitham modulation theory, which is a modified version of the well‐known finite‐gap integration method. Based on the reparameterization of the solution with the use of algebraic resolvent of the polynomial defining the solution, the periodic wave solutions of the high‐order JM equation are described by the elliptic function along with the Whitham modulation equations. Complete classification of possible wave structures of the high‐order JM equation is given for all possible jump conditions at the discontinuity initial value. The analytic results proposed in this work are confirmed by direct numerical simulations.
Creation of a Life Prediction Model for Combined High-Cycle Fatigue and Creep
Authors: Bouchenot Thomas , Patel Kirtan , Gordon Ali P. , Shinde Sachin 
Published: June 2022

Abstract
While industrial gas turbine blades are commonly designed to resist creep and high-cycle fatigue (HCF) failure, the combination of these two loading conditions is seldom considered. The effect of creep damage elicited prior or concurrent to HCF loading is not well established and can significantly reduce the HCF lifetime of these critical components. A comprehensive life prediction model capable of capturing these superimposed effects is needed to ensure current reliability standards are maintained when designing aggressively loaded, next-generation industrial gas turbine blades. The consequence of combined HCF and creep loading to the lifetime a Ni-base superalloy is characterized and modeled in this study. Composition and calibration of the model are carried out using data from HCF tests conducted on virgin and pre-crept specimens at 750 °C and 850 °C. The experimental data encompass a wide range of stress ratios and pre-creep strains to mimic to the expansive set of potential turbine blade loading conditions. The proposed microstructurally informed model is based on existing principles and relies on test data and information gathered from a comprehensive failure analysis of the tested samples.
Atrial Arrhythmia Ablation in Patients With D-Transposition of the Great Arteries and Atrial Switch
Authors: Chiriac Anca , Cheema Kamal P. , Giardi Davide , Espinosa Samantha M. , Fitzgerald Patrick , Perez-Downes Julio C. , Umadat Goyal , Hodge David O. , Phillips Sabrina D. , Madhavan Malini , Asirvatham Samuel J. , McLeod Christopher J. 
Published: June 2022

Background:
Patients with D-transposition of the great arteries and atrial switch have a high incidence of atrial arrhythmias. We sought to analyze the arrhythmia substrate, ablation strategies, and outcomes for catheter ablation in this population.

Methods:
An in-depth analysis of all clinical and procedural data in patients with D-transposition of the great arteries, atrial baffles, and atrial arrhythmia ablation was performed.

Results:

A cohort of 32 patients (72% male, mean age 38±7 years) underwent ablation for non-AV nodal reentrant tachycardia atrial arrhythmias, and 4 patients underwent AV nodal reentrant tachycardia ablation. Cavotricuspid isthmus flutter (CTI-flutter) was the most common arrhythmia, encountered in 75% of patients, followed by scar-related intraatrial reentrant tachycardia (non-CTI intraatrial reentrant tachycardia, 53%) and focal atrial tachycardia (focal atrial tachycardia, 6%). Among the 32 patients, 26 underwent 31 procedures at our institution. For patients with prior outside intervention, the index ablation at our institution revealed CTI-dependent flutter in 3/5 cases. However, redo ablation after an index ablation with demonstrated bidirectional CTI block revealed different/new arrhythmia substrates (80% non-CTI intraatrial reentrant tachycardia, 40% focal atrial tachycardia). Achieving bidirectional block across the CTI often required ablating on both sides of the baffle (retroaortic access, 81%; using a baffle leak, 11.5%; or transbaffle puncture, 7.7%). Combined approaches were necessary in 19% to reach the critical tissue. Acute procedural success was 81%, and recurrence was documented in 58% of patients. Despite recurrence, clinical arrhythmia burden was significantly reduced post-ablation (
P
<0.001), with rare episodes, amenable to antiarrhythmic therapy. Redo ablation was required in 5 (19%) patients and uncovered new arrhythmia substrates. AV nodal reentrant tachycardia ablation also required transbaffle approaches in 3/4 patients.

Conclusions:
CTI-dependent flutter was the most common arrhythmia in patients with Dextro-Transposition of the Great Arteries and atrial switch. Transbaffle approaches were often necessary, and, provided that bidirectional CTI block was achieved at the index ablation, late recurrence was due to different arrhythmia mechanisms. Despite recurrence, ablation was associated with significant clinical improvement.
Proto-Chadic reconstruction and Afroasiatic vowel system typology
Authors: Wolff H. Ekkehard 
Published: June 2022

Abstract
The reconstruction of the Proto-Chadic (PC) vowel system has hitherto been considered impossible. Proposals covered one (*a), two (*a, *ə), three (*a, *i, *u) and four (*a, *ə, *i, *u) vowels. The one-vowel solution gains support by evidence from mainly the languages of the Central Chadic branch, together with the notion of palatalisation and labialisation prosodies, which create particular ‘colourings’ for vowels and consonants in phonetic surface realisations and have been discovered to operate in all branches of the family, but to very different extent. Based on new insights into the phonological history of Central Chadic (Wolff 2022, forthcoming), at variance with Gravina (2014), and referring back to a typology of Chadic vowel systems suggested by Schuh (2017), we can now tentatively delineate the development from a minimal vowel inventory */a/, *[ə] in PC to vowel systems of between one and 15 (short and long) phonemic vowels in modern Chadic languages. Diachronic vowel-system typology in Chadic allows a critical review of received wisdom concerning vowel systems elsewhere in Afroasiatic, potentially touching on issues pertaining to the internal sub-classification of the phylum. At least the vowel system of Tashelhiyt (Berber) corresponds in essential details to the PC minimal vowel system, a non-trivial observation that raises questions concerning genetic heritage, language contact, and/or areal innovation.
Storylines of South Pacific Convergence Zone Changes in a Warmer World
Authors: Narsey Sugata , Brown Josephine R. , Delage Francois , Boschat Ghyslaine , Grose Michael , Colman Rob , Power Scott 
Published: June 2022

Abstract
The South Pacific convergence zone (SPCZ) is evaluated in simulations of historical climate from phase 5 of the Coupled Model Intercomparison Project (CMIP5) and phase 6 (CMIP6) models, showing a modest improvement in the simulation of South Pacific precipitation (spatial pattern and mean bias) in CMIP6 models but little change in the overly zonal position of the SPCZ compared with CMIP5 models. A set of models that simulate a reasonable SPCZ are selected from both ensembles, and future projections under high emissions (RCP8.5 and SSP5–8.5) scenarios are examined. The multimodel mean projected change in SPCZ precipitation and position is small, but this multimodel mean response obscures a wide range of future projections from individual models. To investigate the full range of future projections a storyline approach is adopted, focusing on groups of models that simulate a northward-shifted SPCZ, a southward-shifted SPCZ, or little change in SPCZ position. The northward-shifted SPCZ group also exhibit large increases in precipitation in the equatorial Pacific, while the southward-shifted SPCZ group exhibit smaller increases in equatorial precipitation but greater increases within the SPCZ region. A moisture budget decomposition confirms the findings of previous studies: that changes in the mean circulation dynamics are the primary source of uncertainty for projected changes in precipitation in the SPCZ region. While uncertainty remains in SPCZ projections, partly due to uncertain patterns of sea surface temperature change and systematic coupled model biases, it may be worthwhile to consider the range of plausible SPCZ projections captured by this storyline approach for adaptation and planning in the South Pacific region.

Significance Statement
The South Pacific convergence zone is a band of intense rainfall that influences the weather and climate of many Pacific Island communities. Future changes in the SPCZ will therefore impact these communities. We examine climate model representations of future climate to find out how the SPCZ might change in a warmer world. While the models disagree on future changes in the SPCZ, we suggest that it may be useful to consider groups of models with common “storylines” of future change. The changes in the position of the SPCZ in a warmer world correlate strongly to the amount of rainfall change locally. Some models suggest a northward movement of the SPCZ, while others suggest a southward movement. Consideration of the full range of possible future behavior of the SPCZ is needed to better prepare for the impacts of a warmer climate.
Booster Dose of Attention Training Program for Young Novice Drivers: A Longitudinal Driving Simulator Evaluation Study
Authors: Glassman Jeffrey , Yahoodik Sarah , Samuel Siby , Young Jared , Knodler Michael K. , Zhang Tingru , Zafian Tracy , Fisher Donald L. , Yamani Yusuke 
Published: June 2022

Objective We examined the effectiveness of a second exposure to ACCEL, a novel driving training program, on latent hazard anticipation (HA) performance several months after their first exposure. Background Past research has demonstrated that PC-based driver training programs can improve latent HA performance in young novice drivers, but these improvements are below the ceiling level. Method Twenty-five participants were randomly assigned to either the Placebo group, the ACCEL-1 group, or the ACCEL-2 group. Following the completion of the assigned training program, participants drove a series of eighteen scenarios incorporating latent hazards in a high-fidelity driving simulator with their eyes tracked. Participants returned two to six months following the first session and completed either the placebo program (ACCEL-1 and Placebo groups), or a second dose of training program (ACCEL-2 group), again followed by simulated evaluation drives. Results The ACCEL-2 group showed improved HA performance compared to the ACCEL-1 and Placebo groups in the second evaluation. Conclusion ACCEL enhances young novice drivers’ latent HA performance. The effectiveness of ACCEL is retained up to 6 months, and a second dose further improves HA performance. Application Policy makers should consider requiring such training before the completion of graduate driver license programs. Young novice drivers that do not show successful latent HA performance could be required to complete additional training before being allowed to drive without restrictions.
A Simple and Reproducible In Vivo Rabbit Phonation Model for Glottic Insufficiency
Authors: Swift William M. , Churnin Ian T. , Hamdi Osama A. , Strumpf Andrew M. , Koehn Heather A. , Cottler Patrick S. , Daniero James J. 
Published: June 2022

AbstractObjectiveThe objective of this study is to describe an in vivo rabbit phonation model for glottic insufficiency that is simple and reproducible by means of unilateral transcricothyroid laryngeal muscle stimulation and high‐speed video recordings of evoked phonation.Study DesignNonrandomized controlled animal trial.SettingAcademic medical center.MethodsA single operation including evoked phonation with bilateral and unilateral transcricothyroid laryngeal muscle stimulation conditions was modeled using 6 New Zealand white rabbits. The effect of stimulation method on glottic cycle, pitch, and loudness was compared. Endoscopic recordings using 5000 frames‐per‐second image capture technology and audiologic recordings were obtained for all phonation conditions. Primary outcome measures included means of maximum glottal area (MGA)/length pixel ratio, right and left amplitude/length pixel ratios, calculated cycle frequency, auditory recorded frequency, and maximum auditory intensity. Measurements were obtained via pixel counts using ImageJ.ResultsMean MGA/length was significantly greater with unilateral, 20.30, vs bilateral, 9.62, stimulation (P = .043). Mean frequency of 479.92 Hz vs 683.46 Hz (P = .027) and mean maximum intensity of 76.3 dB vs 83.5 dB (P = .013) were significantly increased from unilateral to bilateral stimulation. There was no significant difference in mean right amplitude/length between unilateral and bilateral.ConclusionThe described model demonstrates a simple and reproducible means of producing glottic insufficiency due to unilateral vocal fold bowing and represents a pathway for better understanding the biomechanics and pathophysiology of glottic insufficiency due to superior laryngeal nerve injury and vocal fold immobility and offers the potential to compare treatment modalities through in vivo study.
An Eight Year Clinico-Microbiological Retrospective Study on Brain Abscesses in India
Authors: Chetty Meghna , Rakhi Biswas , Rachana Kannambath , Sujatha Sistla , Srinivasan Gopalkrishnan Muthu 
Published: June 2022

Background: Intracranial abscesses have been a diagnostic and therapeutic challenge since time immemorial for both the microbiologists and the neurosurgeons. There is paucity of detailed studies documenting the infecting organism causing brain abscesses in South India. Aims: The study aimed at identifying and assessing the prevalence of aerobic, anaerobic bacteria and fungi associated with brain abscesses at a tertiary care hospital in South India. Methods and Material: Eight years data was collected from the records of culture reports from 2007 to 2010 and 2013 to 2018. The corresponding clinical case records were retrieved for the assessment of risk factors. Risk factors of brain abscess development were assessed based on clinical cases records. Results: Data from 140 brain abscess cases obtained over a period of 8 years were analyzed. Out of the 140 samples, 66 (47.14%) were culture positive in which 33 (50%) had single aerobic/facultative anaerobic bacteria, 20 (30.3%) had mixture of more than one aerobic/facultative anaerobic bacteria, 12 (18.18%) had single obligate anaerobic bacteria and 1(1.5%) sample had Mycobacterium tuberculosis isolated. Among the total 92 isolates, Pseudomonas aeruginosa (21/92, 23%) and Staphylococcus aureus (20/92, 22%) predominated. Bacteroides fragilis group was the most common obligate anaerobe isolated. There were no fungal isolates. As there were various isolates isolated, hence there is heterogeneity of isolates detected Neuroanatomically, parietal lobe (45/140, 32%) was the most common location. Otogenic infection was the major risk factor for parietal and temporal lobe abscess ( P value < .05). Conclusions: It has become essential for the microbiologists to be aware of unusual isolates from brain abscess and its complex nature. Obscurity and difficulty in their microbiological diagnosis calls for more such detailed studies.
Dual antiplatelet therapy with cilostazol in stroke patients with extracranial arterial stenosis or without arterial stenosis: A subgroup analysis of the CSPS.com trial
Authors: Uchiyama Shinichiro , Toyoda Kazunori , Okamura Satomi , Omae Katsuhiro , Hoshino Haruhiko , Kimura Kazumi , Kitagawa Kazuo , Minematsu Kazuo , Yamaguchi Takenori 
Published: June 2022

Background: We previously reported that dual antiplatelet therapy (DAPT) with cilostazol was superior to aspirin or clopidogrel for the prevention of recurrent stroke and vascular events in a subgroup analysis of intracranial arterial stenosis in the Cilostazol Stroke Prevention Study for Antiplatelet Combination ( CSPS.com ), a randomized controlled trial. Aims: We conducted another subgroup analysis to investigate the benefit of DAPT with cilostazol in patients with extracranial arterial stenosis (ECAS) and those without arterial stenosis. Methods: We compared the risk of recurrent ischemic stroke, vascular events, and major bleeding between DAPT with cilostazol plus aspirin or clopidogrel and aspirin or clopidogrel alone in patients with ischemic stroke between 8 and 180 days before starting trial treatment and ECAS or without arterial stenosis. Results: The median follow-up period was 1.4 years. The risk of recurrent ischemic stroke (hazard ratio (HR): 1.04, 95% confidence interval (CI): 0.42–2.57) and vascular events (HR: 0.97, 95% CI: 0.42–2.24) did not differ between the two groups for the 253 patients with ECAS, whereas they were lower (HR: 0.36, 95% CI: 0.18–0.74 and HR: 0.47, 95% CI: 0.26–0.85, respectively) in the DAPT group for the 944 patients without arterial stenosis. The risk of major bleeding did not differ between the groups in patients with ECAS (HR: 0.58, 95% CI: 0.05–6.39) or without arterial stenosis (HR: 0.79, 95% CI: 0.27–2.26). Conclusion: DAPT with cilostazol might be beneficial for prevention of recurrent stroke and vascular events in patients without arterial stenosis but not in those with ECAS. Data access statement: We will make the deidentified participant data from this research available to the scientific community with as few restrictions as feasible, while retaining exclusive use until the publication of major output.
Effects of exercise prescribed at different levels of claudication pain on walking performance in patients with intermittent claudication: a protocol for a randomised controlled trial
Authors: Birkett Stefan T. , Sinclair Jonathan , Seed Sally A. , Pymer Sean , Caldow Edward , Ingle Lee , Harwood Amy E. , Egun Anselm 
Published: June 2022

Background: Peripheral artery disease affects over 236 million people globally and the classic symptom is intermittent claudication (IC) which is associated with reduction in physical activity. The evidence that supervised exercise programmes (SEPs) improve pain-free and maximal walking distance is irrefutable. However, adherence rates are low with exercise-related pain cited as a contributing factor. National and international guidelines recommend exercising at a moderate to maximal level of claudication pain to improve walking ability; however, exercising pain-free or at mild claudication pain has been shown to achieve this outcome. There is limited evidence that compares the relative effects of exercise prescribed at different levels of claudication pain. Objective: The objective of this study is to directly compare the effects of exercise prescribed at three different levels of claudication pain on walking performance. Design: This study will be a single-centre randomised controlled trial. Methods: Based on an a priori power calculation, 51 patients with IC will be allocated to 24 weeks of twice-weekly pain-free (PF), moderate pain (MOD-P) or maximal pain (MAX-P) exercise. The PF group will cease exercise at the onset of claudication (1 on the 0–4 IC rating scale), the MOD-P group will stop once moderate pain is reached (2 on the rating scale) and the MAX-P group will stop once maximal pain is reached (4 on the rating scale). Analysis: Outcome measures will be assessed at baseline, 12 and 24 weeks adopting an analysis of covariance (ANCOVA) to compare MWD across three time points. The primary outcome for the trial will be change in maximal treadmill walking distance at 12 and 24 weeks. Registration: Trial registration number: NCT04370327.
The Relationship Between Maximum Shoulder Horizontal Abduction and Adduction on Peak Shoulder Kinetics in Professional Pitchers
Authors: Manzi Joseph E. , Dowling Brittany , Trauger Nicolas , Hansen Benjamin R. , Quan Theodore , Dennis Elizabeth , Fu Michael C. , Dines Joshua S. 
Published: June 2022

Background: Repetitive horizontal shoulder abduction during pitching can cause increased contact between the posterosuperior aspect of the glenoid and the greater tuberosity of the humeral head, theoretically putting baseball pitchers at increased risk of shoulder internal impingement and other shoulder pathologies. Hypothesis: Increased shoulder horizontal abduction is associated with increased shoulder anterior force, while increased horizontal adduction is associated with increased shoulder distraction force. Study Design: Descriptive laboratory study. Level of Evidence: Level 4. Methods: A total of 339 professional baseball pitchers threw 8 to 10 fastball pitches using 3D motion capture (480 Hz). Pitchers were divided into 2 sets of quartiles based on maximum shoulder horizontal abduction and adduction. Elbow flexion, shoulder external rotation, and peak shoulder kinetics were compared between quartiles with post hoc linear regressions conducted for the entire cohort. Results: At maximum shoulder horizontal abduction, there was no difference in ball velocity between quartiles ( P = 0.76). For every 10º increase in maximum shoulder horizontal abduction, shoulder anterior force decreased by 2.2% body weight (BW) ( P < 0.01, B = −0.22, β = −0.38), shoulder adduction torque decreased by 0.5%BW × body height (BH) ( P < 0.01, B = −0.05, β = −0.19), and shoulder horizontal adduction torque decreased by 0.4%BW × BH ( P < 0.01, B = −0.04, β = −0.48). For every 10º increase in maximum shoulder horizontal adduction, shoulder anterior force increased by 2%BW and ball velocity decreased by 1.2 m/s (2.7 MPH). Conclusion: Professional pitchers with the least amount of maximum horizontal adduction had faster ball velocity and decreased shoulder anterior force. Pitchers with greater maximum shoulder horizontal abduction had decreased shoulder anterior force, shoulder adduction torque, and shoulder horizontal adduction torque. To maximize ball velocity as a performance metric while minimizing shoulder anterior force, pitchers can consider decreasing maximum shoulder adduction angles at later stages of the pitch. Clinical Relevance: Identifying risk factors for increased throwing shoulder kinetics (ie, shoulder anterior force, shoulder adduction torque) has potential implications in injury prevention. Specifically, mitigating shoulder anterior forces may be beneficial in reducing risk of injury.
Study of streptococcal antibody (anti-streptolysin O) among healthy children in Bangladesh
Authors: Saha Santosh Kumar , Choudhury Kamrun Nahar , Zareen Salma , Mousum Sabrina , Mamun Mohammad Abdullah Al , Haque M Atiqul 
Published: June 2022

Objectives: The standard reference value of anti-streptolysin O (ASO) titre for diagnosing acute rheumatic fever (RF) in children is yet to be determined in Bangladesh. We aimed to measure the upper limit of the normal (ULN) of ASO titre among healthy children to determine the cut-off value for the diagnosis of RF in Bangladesh. Methods: A total of 400 healthy children aged 5–15 years with no history of fever, sore throat and impetigo during the last 8 weeks of the study were enrolled. The respondents were randomly selected from an urban non-slum area, an urban slum area and a rural area of Bangladesh. ASO titre was measured using a turbidimetric immunoassay based on the principle of an agglutination reaction. The 80th percentile value was considered as the ULN of ASO titre. Results: Approximately 55% of the children were male. The mean (SD) age of children was 9.1 (2.7) years. The ULN of ASO titre for 5–15 years aged children was 217.4 IU/mL. Conclusion: Our reference value of ASO titre at the 80th percentile will be an essential guide for clinicians to diagnose acute RF.