bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transformer maintenance decision based on condition monitoring and fuzzy probability hybrid reliability assessment
Authors: Zhang Dabo , Chu Zhuwei , Gui Qianjin , Wu Fan , Yang Hejun , Ma Yinghao , Tao Weiqing 
Published: December 2022

AbstractEquipment maintenance decision is a very critical technology in power grid asset management. The traditional maintenance decision focuses on the analysis of the operation performance of the equipment itself, but lacks the analysis and description of the fuzziness of power equipment outage parameters. Therefore, this paper establishes the reliability assessment model based on equipment health condition monitoring, which makes the maintenance decision transition from equipment level to system level, and the fuzzy mathematics theory is introduced to establish a model describing the fuzziness of equipment failure rate parameter to make system reliability assessment and equipment maintenance decision scheme. Firstly, this paper proposes a fuzzy failure rate model of power transformer based on condition monitoring. Then the fuzzy parameters are combined with the conventional probabilistic reliability assessment method to establish the fuzzy probability hybrid reliability assessment model of the transmission system, and the fuzzy maintenance reliability benefit index is defined and deduced. Finally, a maintenance strategy of transformer based on fuzzy probability hybrid reliability assessment and fuzzy set theory is proposed, and the case study is carried out on a regional power grid in East China. The results show that the proposed model provides an improved maintenance strategy of power equipment.
Novel synchronous rectification strategy for flyback converter in both DCM and CCM applications
Authors: Sun Shikai , Guo Hui , Zhang Yimeng , Sun Lejia , Li Yufei , Zhang Yuming 
Published: December 2022

AbstractIn this paper, a novel flyback synchronous rectification (SR) strategy for both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) is proposed. The hybrid mode is suitable for the wide input voltage range, and large load range, which can widen the application range. The proposed strategy can reduce the body diode conduction time in the turning‐on interval in both the DCM and CCM and eliminate the cross‐conduction between the primary switch and secondary switch that existed in the conventional CCM SR converter by adding several logic units. A 12‐V/3‐A output mixed‐mode flyback converter prototype is designed and fabricated to verify the strategy. Measurement results show that with the proposed SR strategy, the efficiency is improved by approximately 5.5% in CCM and 0.5% in DCM.
Gaussian‐like measurement likelihood based particle filter for extended target tracking
Authors: Liu Yiduo , Ji Hongbing , Zhang Yongquan 
Published: December 2022

AbstractExtended target tracking based on the star‐convex model is a multi‐dimensional nonlinear estimation problem. To approximate the shape of an extended target, the star‐convex model requires a higher‐order Fourier series expansion, which will increase the dimensionality of the extended state, so that the nonlinear filters under Gaussian assumptions cannot converge to the optimal state estimation. In this paper, a novel particle filter algorithm based on Gaussian‐like measurement likelihood (GL) is proposed. As latent variables with high uncertainty in the measurement model, the scattering centres are modelled as a Gaussian‐like probability distribution characterising the target's shape. Then the measurement noise is integrated into the Gaussian‐like probability distribution via Gaussian quadrature to obtain the accurate measurement likelihood. Moreover, particle swarm optimization is employed to reduce computational complexity. It enables particles to move into the vicinity of measurements, thereby increasing the diversity of the particles belonging to the target's shape. The simulation results show that the GL can improve the accuracy of shape estimation under high measurement noise and low measurement rates. Furthermore, the proposed particle filter can track the extended target effectively with an aeroplane‐like shape.
Type 1 Endoleak: Management following Thoracic Endovascular Aortic Repair
Authors: Czerny Martin , Kreibich Maximilian , Berger Tim , Kondov Stoyan , Siepe Matthias , Beyersdorf Friedhelm , Rylski Bartosz 
Published: December 2022

AbstractThe best treatment option for type IA endoleak after thoracic endovascular aortic repair (TEVAR) is its avoidance by understanding the underlying disease process, having/creating adequate landing zones, as well as respecting anatomy in combination with knowledge of the capabilities and limitations of the TEVAR device used.
Indian Survey on Management of Choledocholithiasis—Opportunities for Improvement and Future Studies
Authors: Jagtap Nitin , Waghmare Sudatta , Sundaram Sridhar , Khairatkar Rohan , Modak Shreeyash , Lakhtakia Sundeep , Tandan Manu , Rao G. Venkat , Reddy D. Nageshwar 
Published: December 2022

Abstract
Background In clinical practice, decision about management of choledocholithiasis is driven by availability of resources and expertise, patients and healthcare professional preferences. This survey is aimed to describe the approach of physicians and surgeons for the management of choledocholithiasis.
Method A 36-question online survey was conducted using Google Forms on various aspects of management of choledocholithiasis.
Results The responses from 323 participants were included, of which 202 (62.54%) were physicians and 121 (37.46%) were surgeons. The proportion of responders who do not follow American or European Society of Gastrointestinal Endoscopy guidelines is associated with increasing age and experience of responders (p = 0.0001), while place of work (private vs. teaching) and broad specialty (physician vs surgeon) are not associated (p >0.05). For patients with high likelihood of choledocholithiasis, 123 (38.1%) participants prefer to do endoscopic ultrasound/magnetic resonance cholangiopancreatography (EUS/MRCP) rather than directly performing endoscopic retrograde cholangiopancreatography/intraoperative cholangiography (ERCP/IOC). For intermediate likelihood, MRCP is more commonly preferred compared with EUS, due to local availability (44%), expertise (39.6%), healthcare professionals preference (30.7%), and patients preference (17.3%). For difficult common bile duct (CBD) stones, short biliary sphincterotomy with large balloon sphincteroplasty (59.4%), followed by laparoscopic CBD exploration are commonly used approaches. Prophylactic CBD stent placement after ERCP and CBD clearance is common practice. Preoperative ERCP followed by cholecystectomy is more preferred approach than cholecystectomy and CBD exploration.
Conclusion There is considerable variability in the management of choledocholithiasis. The practices such as use of EUS/MRCP for high likelihood group, use of prophylactic CBD stent placement after ERCP and CBD clearance, and use of single stage approach especially in patient with intermediate likelihood group should be addressed in future studies.
Burnout among Physicians at Medical Departments in Benghazi-Libya
Authors: Alsaeiti Khaled D. , Elkadiki Abdelhdi , Hamedh Mohamed A. I. , Ezwaie Ragheda M. , Younis Sarah Muftah , Elfigih Seraj O. 
Published: December 2022

Abstract
Background Burnout syndrome is recognized as a global issue, and as medical practice is stressful, healthcare workers are found to be burnt out and exhausted very soon, which is reflected negatively on the medical staff well-being, patients' outcome, and the overall organizational performance.
Aim This study is planned to assess the magnitude of burnout among physicians in Benghazi-Libya.
Methods This cross-sectional study was carried out in 2020 on a total of 150 physicians working at different departments of internal medicine in Benghazi-Libya. The Maslach Burnout Inventory collection instrument was used to assess the three components of burnout syndrome: emotional exhaustion, depersonalization, and reduced personal accomplishment. High scores in emotional exhaustion and depersonalization and low scores in personal accomplishment are indicative of high burnout. The statistical analyses of the data were performed using the SPSS version 21. The level of statistical significance was considered as p-value less than 0.05.
Results 60% of the respondents were females and 40% were males. About 14.7% had high emotional exhaustion, 92% had high depersonalization, and 87.3% had low personal accomplishment scores. Statistical analysis showed no significant relationship between gender and burnout. Alternatively, a significant association was found between degree certificate and emotional exhaustion, as moderate- and high-level burnout were more prevalent among MBCHB participants than those with masters and board degrees. No association was found between degree certificate and depersonalization or personal accomplishment.
Conclusion Burnout is prevalent among internal medicine doctors in Benghazi, with the newly graduated medical personnel scoring higher rates of burnout than doctors with higher degrees. No relationship was found between gender and burnout.
Nomenclature of Pancreatic Fluid Collections following Acute Pancreatitis: Need to Further Revise the Atlanta Classification System!
Authors: Rana Surinder Singh , Gupta Rajesh 
Published: December 2022

AbstractA better understanding of the disease pathophysiology, improved imaging modalities, and the development of minimally invasive interventions led to the revision of the Atlanta classification and new terminologies for the pancreatic fluid collections (PFCs) occurring in acute pancreatitis. Peripancreatic necrosis (PPN) or extra-pancreatic necrosis (EPN) has been reported as a distinct morphological entity with a better outcome than combined pancreatic and peripancreatic necrosis as well as pancreatic parenchymal necrosis alone and slightly worse than acute interstitial pancreatitis. In this news and views, we discuss a study that compared the morphological features and outcomes of endoscopic drainage of walled off necrotic collections developing after EPN alone with those developing after PN with or without EPN.
Charcot-Marie-Tooth Disease Type 4C and Autosomal Dominant Heterozygous Ichthyosis Vulgaris, with Bilateral Hearing Loss: A Novel Association with Review of Literature
Authors: Chhajed Monika , Gunasekaran Pradeep Kumar , Bhanudeep Singanamalla , Saini Lokesh 
Published: December 2022

AbstractA 3-year-old boy, firstborn to nonconsanguineous parents, presented with motor development delay and floppiness of bilateral lower limbs since birth. No significant family history presented at time of check-up. He could stand with support, eat with a spoon without spillage, and speak in two-word sentences. There was no history suggestive of cranial nerve impairment. Examination revealed normal head circumference, dry, scaly skin lesions on the trunk, distal weakness with sluggish deep tendon reflexes in bilateral lower limbs, and a high stepping gait. Nerve conduction studies revealed demyelinating polyneuropathy. Brain stem-evoked response audiometry testing revealed auditory neuropathy. Clinical exome sequencing revealed a known pathogenic variant of 3325C > T in the SH3TC2 gene suggestive of Charcot-Marie-Tooth disease type 4C and ichthyosis vulgaris with a novel variant of 2218C > T in the FLG gene. We have reviewed the available literature for reported associations of Charcot-Marie-Tooth disease type 4C and ichthyosis vulgaris. This is probably the first reported association of Charcot-Marie-Tooth disease type 4C and ichthyosis vulgaris with bilateral hearing loss.
Novel FLNB Variants in Seven Argentinian Cases with Spondylocarpotarsal Synostosis Syndrome
Authors: Ramos-Mejía R , del Pino M , Aza-Carmona M , Abbate S , Obregon M G. , Heath K E. , Fano V 
Published: December 2022

AbstractSpondylocarpotarsal synostosis syndrome (SCT) is a very rare skeletal dysplasia characterized by vertebral, carpal, and tarsal fusion; growth retardation; and mild dysmorphic facial features. Variants in FLNB, MYH3, and RFLNA have been implicated in this dysplasia. We report the clinical and radiological follow-up of seven SCT pediatric cases associated with biallelic FLNB variants, from four Argentinian families. The seven cases share previously described facial characteristics: round facies, large eyes, and wide based nose; all of them had variable height deficit, in one case noted early in life. Other findings included clinodactyly, joint limitation without bone fusion, neurosensorial hearing loss, and ophthalmological compromise. All cases presented with spinal fusion with variable severity and location, carpal bones coalition, and also delay in carpal ossification. The heterozygous carrier parents had normal height values to −2.5 score standard deviation, without skeletal defects detected. Three different FLNB variants, one nonsense and two frameshift, were detected, all of which were predicted to result in a truncated protein or are degraded by nonsense mediated decay. All cases had at least one copy of the nonsense variant, c.1128C> G; p. (Tyr376*), suggesting the presence of a common ancestor.
2.9 Iron-Catalyzed Cross Coupling of Aryl and Vinyl Electrophiles
Authors: Nolla-Saltiel R. , Bedford R. B. 
Published: December 2022

AbstractThis review focuses on cross-coupling methodologies that utilize aryl and vinyl electrophiles relying on iron-based catalysts. We have outlined the most relevant and better-established methodologies; leading to the discussion of significant cases based on hard nucleophiles, with the number of examples dropping with their increasing softness. In addition, we describe several useful transformations based on reactive unsaturated nucleophiles, such as acetylenes and alkenes.
Investments in the Asian water sector: an analysis based on the DCC-GARCH model
Authors: Reza Rajibur , Tularam Gurudeo Anand , Li Xiyang , Li Bin 
Published: December 2022

AbstractThe availability of potable water is a challenging issue for many Asian countries where economies are still expanding and the population is growing. It is not difficult to observe that water scarcity will become far worse, sooner rather than later. In this study, we investigate the relationships among water indices in five Asian markets (namely China, Hong Kong, Japan, Philippines and Singapore) for the sample period 2005–2018 using the DCC-GARCH model. The empirical results confirm that volatility spillover exists among all the five water indices and there are persistent positive volatility effects. Further, we find that portfolio diversification is possible and benefits may be gained due to the contrasting correlations between pairs of these water indices. The findings of this study may be useful to academics, researchers, policymakers and major water investors worldwide in further comprehending the challenges faced by the Asian water market.
Recent developments in parasitic plant biology
Authors: Stanga John P. 
Published: December 2022

Abstract
Parasitic plants are taxonomically diverse, globally distributed, and capable of parasitizing a wide array of host plants, often with preferences for specific hosts. Some parasitic plants are damaging pests of numerous crops; their effects can be especially detrimental in low-input agriculture. Effective breeding and management strategies rely on comprehensive information about the life history, evolution, genetics, biochemistry, physiology, communication, and ecology of parasitic plants and their hosts. High-throughput sequencing approaches are used to advance research in genome evolution, to identify genetic loci for breeding, to characterize microbial communities associated with parasitic plants, and to discover molecular mechanisms of parasitism and host responses. Molecular and biochemical investigations are elucidating the mechanisms by which parasitic seeds germinate in response to host phytohormones in the rhizosphere. Structural information guides synthesis- and screening-based methods to identify chemicals that could be used to promote or inhibit parasitic seed germination. Microbial communities in the rhizosphere influence parasitic plants and hosts as a system; fungal and bacterial species themselves, and products derived from them, have the potential for agronomic application. Proteins and nucleic acids exchanged through the haustorium reveal the complex interplay between parasitic plant pathogenesis and host defense responses. This review focuses on the latest developments published within the last two years.
Visitor Information Centres and Millennial Travellers: Remaining Relevant in a Digital Era
Authors: Chui Caleb , Walters Gabby 
Published: December 2022

Abstract
Visitor usage of visitor information centres (VICs) has significantly declined within the past decade due to the increasing use and popularity of online information sources. The immediacy and accessibility of online information has resulted in tourists relying primarily on this source of information both prior to and during the travel experience. This is an issue due to the many benefits that VICs provide to business suppliers, local communities and tourists.

Information
© The Authors 2022
A superconfiguration calculation of opacity with consistent bound and continuum electron treatments using green’s functions
Authors: Gill N M , Fontes C J , Starrett C E 
Published: December 2022

Abstract
One of the challenges in calculating the opacity of dense plasmas is the difficulty in consistently modeling electrons bound to nuclei and those that exist within the continuum of free states in electronic structure models. We address this issue by adapting the green’s function approach, originally developed for use in average atom calculations, to the determination of superconfiguration (SC) electronic structure. The spectra created using these SCs indicate that a consistent treatment of continuum electronic structure is important for phenomena involving electrons near ionization thresholds, such as the pressure ionization of bound states and the opacity due to transitions near bound-free edges. Though important for dense plasmas, the detailed incorporation of continuum electrons into structure calculations does not have significant impact on the recent discrepancies between the predicted and measured opacity of hot, dense iron (Bailey et al 2015 Nature
517 56). We find that the inclusion of plasma effects through an ion-sphere model along with our treatment of continuum electronic states gives a description of pressure ionization in hot, dense aluminum that is in better agreement with experiment than methods that rely on perturbative descriptions of the plasma environment (Hoarty et al 2013 Phys. Rev. Lett.
110 265003).
Research on vector characteristics and applications of electromagnetic radiation induced by rock failure
Authors: Zhao Yingjie , He Xueqiu , Liu Yang , Song Dazhao , Qiu Liming , Wei Menghan , Yin Shan , Guo Lei 
Published: December 2022

Abstract
Coal and rock electromagnetic radiation (EMR) measurement plays an essential role in the monitoring and early warning of underground engineering dynamic hazards as a real-time, dynamic, non-contact geophysical monitoring method of coal and rock fissure. The electromagnetic field has obvious directionality; however, the EMR measurement instruments used in underground engineering are scalar rather than vector instruments. Therefore, this paper uses a self-developed three-axis antenna to measure the vector EMR for rock Brazil splitting failure. Study the influence of crack size (D), the distance of measuring point (r) and crack azimuth angles (θ
0) on the vector characteristics of EMR induced by rock splitting failure. Analyze the vector response mechanism of EMR induced by rock splitting failure, and conduct on-site vector EMR measurements in the Lilou Coal Mine. The study achievements are concluded as follows: the amplitude of vector EMR (
A

s) increases linearly with the increase of crack size (D), decreases with the distance square (r
2) from the measurement point to the crack increases, and increases and then decrease with the increase of angles (θ
0) between the sample direction and the initial fixed position, showing arching changes; The direction of vector EMR (
A

s) is mainly affected by θ
0 impact. The results of experiments are consistent with that of theoretical analysis. The field measurement results show that the stress concentration area and its orientation of the roadway could be measured using the three-axis vector EMR instrument we researched and developed.
Machine Learning-based Prediction of Sunspots using Fourier Transform Analysis of the Time Series
Authors: Rodríguez José-Víctor , Rodríguez-Rodríguez Ignacio , Lok Woo Wai 
Published: December 2022

Abstract
The study of solar activity holds special importance since the changes in our star’s behavior affect both the Earth’s atmosphere and the conditions of the interplanetary environment. They can interfere with air navigation, space flight, satellites, radar, high-frequency communications, and overhead power lines, and can even negatively influence human health. We present here a machine learning-based prediction of the evolution of the current sunspot cycle (solar cycle 25). First, we analyze the Fourier Transform of the total time series (from 1749 to 2022) to find periodicities with which to lag this series and then add attributes (predictors) to the forecasting models to obtain the most accurate result possible. Consequently, we build a trained model of the series considering different starting points (from 1749 to 1940, with 1 yr steps), applying Random Forests, Support Vector Machines, Gaussian Processes, and Linear Regression. We find that the model with the lowest error in the test phase (cycle 24) arises with Random Forest and with 1915 as the start year of the time series (yielding a Root Mean Squared Error of 9.59 sunspots). Finally, for cycle 25 this model predicts that the maximum number of sunspots (90) will occur in 2025 March.
Role of magnetohydrodynamic activity in sawtooth induced heat pulse propagation in ADITYA tokamak
Authors: Patel S. , Ghosh J. , Chowdhuri M. B. , Mayya K. B. K. , Manchanda R. , Pandya H. K. B. , Tanna R. L. , Kumar V. , Joisa S. , Purohit S. , Raju D. , Jha S. , Atrey P. K. , Rao C. V. S. , Vasu P. , Chenna Reddy D. , Bhatt S. B. , Saxena Y. C. 
Published: December 2022

Abstract
Fast propagation of sawtooth induced heat pulse is observed in the magnetohydrodynamic (MHD) active plasmas of ADITYA tokamak. The sawtooth crash deposits heat beyond the inversion radius, which gets transported to the edge region of the plasma, and is reflected as inverted sawtooth modulation in the edge channels of electron cyclotron emission (ECE) and

H
α

spectral line emission. The time-lag analysis on ECE signal reveals the propagation time from plasma core to edge of ∼150 µs. From this analysis, the estimated transient electron heat diffusivity

χ

e

hp

is found to be ∼50–60 m2 s−1, which is ten times higher than that of power balance heat diffusivity

χ

e

pb

, in the MHD active discharges of ADITYA. It has been observed that the presence of MHD (m/n = 2/1, 3/1) activity in the intermediate region between the q = 1 and the edge radii, significantly influences the heat transport from the plasma core to the edge region. Stochastic magnetic field region formation with overlapping m/n = 2/1 and 3/1 MHD islands facilitates the fast heat-pulse propagation during a sawtooth crash in ADITYA tokamak. The disparity between the measured and the power-balance estimated diffusivity is significantly reduced by considering the electron heat diffusivity due to stochastization of magnetic field in the intermediate region.