bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transient stability constrained optimal power flow solution using ant colony optimization for continuous domains (ACOR)
Authors: Moradi Behzad , Kargar Abbas , Abazari Saeed 
Published: July 2022

AbstractThis paper aims to improve transient stability using the Ant Colony Optimization for Continuous Domains (ACOR). This improvement is obtained by solving the Transient Stability Constrained Optimal Power Flow (TSCOPF) problem and extracting the sensitivity coefficients. The presented costs minimization approach requires less execution time to manage energy resources efficiently and compared to other conventional methods, it also outperforms based on statistical indicators such as mean and standard deviation. Furthermore, the sensitivity analysis of the suggested method considers the active power generation of the generating units along with their terminal voltage, which notably decreases the operation cost and reduces risk to the power system. On the other hand, the application of ACOR algorithm can reduce the fuel cost of power system operation to 60,928.36 $/h with a decrease of 15.33 $/h compared to the conventional method with a standard deviation equal to 2.51 $/h and an execution time of 7.66 s. This strategy could be used in power system dispatching. This method is implemented on the New England 39 bus system, and the results demonstrate the method's efficiency compared to other conventional methods.
Research of cycloaliphatic epoxy resin and silicone rubber composite insulator interface based on four‐electrode system and temperature rise model
Authors: Wang Yunsong , Liu Yuhao , Mei Hongwei , Xie Min , Wang Liming 
Published: July 2022

AbstractInterface degradation between mandrel and sheath can cause a decrease in insulation performance and mechanical strength of composite insulators. In this study, the interface ageing properties of cycloaliphatic epoxy resin and silicone rubber composite insulator were compared. A water diffusion test was adopted to simulate the composite insulator ageing in a hot and humid environment. A four‐electrode system was built to detect leakage current at different locations (mandrel, sheath and interface), which is an important basis for evaluating insulator performance. The ageing degree of insulator could be quantitatively characterised by leakage current change. It was found that the infiltrated moisture had a great effect on insulation performance. Based on the water absorption test result, the interface performance of two insulators was mainly influenced by their sheath sealing quality. As an auxiliary evaluation method, temperature rise during the test was recorded using an infrared camera. The experiment results showed that interface degradation was the main factor for the insulation performance decrease of silicone rubber composite insulators. However, insulation level reduction of the cycloaliphatic epoxy resin was caused by the wet sheath. In addition, a model for temperature rise of cycloaliphatic epoxy resin insulators was proposed based on good correspondence between sheath material and insulation. The model incorporated multiple processes such as ageing and heating of insulators, and it can predict the early temperature rise well.
Feature hallucination in hypersphere space for few‐shot classification
Authors: Yang Sai , Liu Fan , Chen Zhiyu 
Published: July 2022

AbstractFew‐shot classification (FSC) targeting at classifying unseen classes with few labelled samples is still a challenging task. Recent works show that transfer‐learning based approaches are competitive with meta‐learning ones, which usually pre‐train a convolutional neural networks (CNN)‐based network using cross‐entropy (CE) loss and throw away the last layer to post‐process the novel classes. Hereby, they still suffer the issue of getting a more transferable extractor and lacking enough labelled novel samples. Thus, the authors propose the algorithm of feature hallucination in hypersphere space (FHHS) for FSC. On the first stage, the authors pre‐train a more transferable feature extractor using a hypersphere loss (HL), which supplies CE with supervised contrastive (SC) loss and self‐supervised loss (SSL), in which SC can map the base and novel images onto the hypersphere space densely. On the second stage, the authors generate new samples for unseen classes using their novel algorithm of synthetic novel sampling with the base (SNSB), which linearly interpolate between each novel class prototype and its K nearest neighbour base class prototypes. Comprehensive experiments on multiple popular FSC demonstrate that HL loss can enhance the performance of backbone network and the authors’ feature hallucination method is superior to the existing hallucination‐based methods.
Distributed model predictive control methods for intermodal transport cooperative planning based on ADMM
Authors: Zhou Qicai , Huang Yuankai , Xiong Xiaolei , Zhao Jiong 
Published: July 2022

AbstractThe cooperative planning in intermodal transport networks can obtain the global optimal decision under the premise of ensuring the data privacy of each role in the cooperation and avoiding massive data transmission. For the control of container flow in intermodal transport networks, the distributed model predictive control (DMPC) method can effectively realize cooperative planning, but the convergence speed of the existing DMPC methods is slow. Therefore, this study attempts to construct faster DMPC methods for cooperative planning. The Jacobi proximal distributed model predictive control (JP‐DMPC) and dual consensus distributed model predictive control (DC‐DMPC) methods are constructed for container flow control based on two variants of alternating direction method of multipliers (ADMM). The simulation experiments prove that the convergence speed of JP‐DMPC and DC‐DMPC methods is higher than that of the state‐of‐the‐art method on the premise that the time cost and interaction data volume of each iteration do not change much, and the DC‐DMPC method improves planning speed particularly significantly. This study provides new methods for intermodal transport cooperative planning and has significance for the development of synchromodal transport.
Are pulsar halos rare?
Authors: Martin Pierrick , Marcowith Alexandre , Tibaldo Luigi 
Published: July 2022

Context.Extended gamma-ray emission, interpreted as halos formed by the inverse-Compton scattering of ambient photons by electron-positron pairs, is observed toward a number of middle-aged pulsars. The physical origin and actual commonness of the phenomenon in the Galaxy remain unclear. The conditions of pair confinement seem extreme compared to what can be achieved in recent theoretical models.Aims.We searched for scenarios minimizing as much as possible the extent and magnitude of diffusion suppression in the halos in J0633+1746 and B0656+14, and explored the implications on the local positron flux if they are applied to all nearby middle-aged pulsars.Methods.We used a phenomenological static two-zone diffusion framework, and compared its predictions withFermi-LAT and HAWC observations of the two halos, and with the local positron flux measured with AMS-02.Results.While strong diffusion suppression of two to three orders of magnitude at ∼100 TeV is required by the data, it is possible to find solutions with diffusion suppression extents as small as 30 pc for both objects. If all nearby middle-aged pulsars develop such halos, their combined positron flux including the contribution from Geminga would saturate the ≳100 GeV AMS-02 measurement for injection efficiencies that are much smaller than those inferred for the canonical halos in J0633+1746 and B0656+14, and more generally with the values typical of younger pulsar wind nebulae. Conversely, if positrons from other nearby pulsars are released in the interstellar medium without any confinement around the source, their total positron flux fits into the observed spectrum for the same injection efficiencies of a few tens of percent for all pulsars, from objects a few thousand years in age that power bright pulsar wind nebulae to much older objects like J0633+1746 and B0656+14.Conclusions.It seems simpler to assume that most middle-aged pulsars do not develop halos, although the evidence supporting this scenario depends on the actual properties of the local pulsar population and on the uncertain physics driving the formation and evolution of halos. The occurrence rate of the phenomenon could be as low as ∼5−10%, and the local positron flux in the ∼0.1−1.0 TeV range would thus be attributed to a few dozen nearby middle-aged pulsars rapidly releasing pairs into the interstellar medium, with a possible contribution over part or most of the range by J0633+1746, and at higher energies by B0656+14.
Orbital and dynamical analysis of the system around HR 8799
Authors: Zurlo A. , Goździewski K. , Lazzoni C. , Mesa D. , Nogueira P. , Desidera S. , Gratton R. , Marzari F. , Langlois M. , Pinna E. , Chauvin G. , Delorme P. , Girard J. H. , Hagelberg J. , Henning Th. , Janson M. , Rickman E. , Kervella P. , Avenhaus H. , Bhowmik T. , Biller B. , Boccaletti A. , Bonaglia M. , Bonavita M. , Bonnefoy M. , Cantalloube F. , Cheetham A. , Claudi R. , D’Orazi V. , Feldt M. , Galicher R. , Ghose E. , Lagrange A.-M. , le Coroller H. , Ligi R. , Kasper M. , Maire A.-L. , Medard F. , Meyer M. , Peretti S. , Perrot C. , Puglisi A. T. , Rossi F. , Rothberg B. , Schmidt T. , Sissa E. , Vigan A. , Wahhaj Z. 
Published: July 2022

Context.HR 8799 is a young planetary system composed of four planets and a double debris belt. Being the first multi-planetary system discovered with the direct imaging technique, it has been observed extensively since 1998. This wide baseline of astrometric measurements, counting over 50 observations in 20 years, permits a detailed orbital and dynamical analysis of the system.Aims.To explore the orbital parameters of the planets, their dynamical history, and the planet-to-disk interaction, we made follow-up observations of the system during the VLT/SPHERE guaranteed time observation program. We obtained 21 observations, most of them in favorable conditions. In addition, we observed HR 8799 with the instrument LUCI at the Large Binocular Telescope (LBT).Methods.All the observations were reduced with state-of-the-art algorithms implemented to apply the spectral and angular differential imaging method. We re-reduced the SPHERE data obtained during the commissioning of the instrument and in three open-time programs to have homogeneous astrometry. The precise position of the four planets with respect to the host star was calculated by exploiting the fake negative companions method. We obtained an astrometric precision of the order of 6 mas in the worst case and 1 mas in the best case. To improve the orbital fitting, we also took into account all of the astrometric data available in the literature. From the photometric measurements obtained in different wavelengths, we estimated the masses of the planets following the evolutionary models.Results.We obtained updated parameters for the orbits with the assumption of coplanarity, relatively small eccentricities, and periods very close to the 2:1 resonance. We also refined the dynamical mass of each planet and the parallax of the system (24.49 ± 0.07 mas), which overlap with the recentGaiaeDR3/DR3 estimate. Hydrodynamical simulations suggest that inward migration of the planets caused by the interaction with the disk might be responsible for the planets being locked in resonance. We also conducted detailedN-body simulations indicating possible positions of a putative fifth planet with a mass below the present detection limits of ≃3MJup.
Cannabis in der Onkologie – viel Rauch um nichts?
Authors: Burkhard-Meier Anton , Rémi Constanze , Lindner Lars H. , von Bergwelt-Baildon Michael 
Published: July 2022

ZusammenfassungDie medizinische Verwendung von Cannabis hat in den letzten Jahren in Europa und Nordamerika an Popularität gewonnen. Cannabinoide sind sowohl als Fertigarzneimittel als auch in Blüten- und Extraktform verfügbar. Der vorliegende Artikel legt den Fokus auf die supportive Therapie onkologischer Patienten. Mögliche Indikationen sind Schmerzen, Chemotherapie-bedingte Übelkeit und Erbrechen, Appetitlosigkeit und Geschmacksveränderungen. Trotz des enormen Hypes um Cannabis als Medizin ist die Evidenz für dessen Anwendung bei onkologischen Patienten unzureichend. Palliativpatienten mit refraktären Symptomen könnten jedoch geeignete Kandidaten für einen Therapieversuch darstellen. Der entscheidende Parameter für die Auswahl eines Cannabis-Arzneimittels ist die THC/CBD-Ratio. Orale Einnahmeformen bieten sich gerade für Cannabis-naive und ältere Patienten an. Psychische und kardiovaskuläre Nebenwirkungen sind nicht zu unterschätzen.
Langlois Reagent Mediated Tandem Cyclization of o-Hydroxyaryl Enaminones for the Synthesis of 3-(Trifluoromethyl)chromones
Authors: Behera Manoranjan , Thota Pradeepkumar , Sheelam Kalidasu , Kottawar Shrinivas , Shivakumar K. , Kaliyaperumal Muralidharan , Yennam Satyanarayana 
Published: July 2022

AbstractAn efficient and simple synthesis of various 3-(trifluoromethyl)chromones from enamino ketones is described. The key step in the synthesis involves the introduction of a trifluoromethyl (CF3) moiety onto a chromone structure. The significant features of this method include simple operational procedures, the high purity and yield of the product, and excellent regioselectivity.
Meeting Parents' Needs for Education and Preparation following Congenital Heart Disease Diagnosis: Recommendations from a Crowdsourced Study
Authors: Gramszlo Colette , Karpyn Allison , Christofferson Jennifer , McWhorter Linda G. , Demianczyk Abigail C. , Neely Trent , Zyblewski Sinai , Shillingford Amanda , Kazak Anne E. , Sood Erica 
Published: July 2022

Objective This article characterizes the educational needs of parents following fetal or neonatal congenital heart disease (CHD) diagnosis and generates recommendations for meeting these needs.
Study Design Online crowdsourcing methods were used to collect qualitative data from 95 parents of children with CHD regarding their needs for education and preparation following fetal or neonatal diagnosis. Data were analyzed using qualitative methods and themes were organized around the substructure of met and unmet needs.
Results Two themes represented consistently met needs, whereas 10 themes represented needs that were either inconsistently met or consistently unmet. Parents reported needing more information about social, emotional, and financial supports, preparation for long-term care, and guidance toward reputable online resources. Parents also provided recommendations for meeting these needs.
Conclusion Parents' needs for education and preparation following CHD diagnosis are much broader in scope than what they currently receive. Addressing these may support parental coping and active participation in medical decision-making.
Key Points
Perceived Economic Impact of COVID-19 on Dental Practitioners: A Bi-Country Survey
Authors: Tariq Khaloud , Iqbal Kanza , Bhutta Hadeer , Hassan Muhammad , Baloch Faisal 
Published: July 2022

Abstract
Objective COVID-19 resulted in dentistry being declared high-risk occupation due to the mode of the spread of the virus. This resulted in partial and complete closure of dental practices around the world, reducing revenue of practitioners. Hence, study aims to evaluate financial impact on dental practitioners in Pakistan and UAE.
Materials and Methods A questionnaire-based cross-sectional study was conducted from July 2020 to January 2021. It involved questions relating to demographics and financial challenges faced, associated with change in standard operating procedures due to pandemic. The descriptive statistics were expressed as frequency and percentage. Statistical analysis was performed by Chi-square test or Fischer's exact test.
Results In total, 427 respondents participated in the study. Approximately half (55.7%) of the respondents had their practices shut down, while 89.9% observed decrease in patient flow. The majority (82.2%) of respondents had to buy personal protective equipment (PPE), whereas 66.7% had to pay a high cost for that. Almost 87.3% of respondents reported having experienced financial constraints because of the pandemic related changes to the practice. Moreover, 27.8% reported staff being laid off, which were mostly due to monetary constrictions.
Conclusion Dental professionals faced a considerable impact on their practice and financial situation due to pandemic. Policies must be made to support such professionals in times of emergency who are at higher risk of being most affected with respect to health and finances.
A Clinical Risk Analysis of Postoperative Nausea and Vomiting After Colorectal Cancer Surgery
Authors: Hiraki Masatsugu , Tanaka Toshiya , Koga Mika , Miura Daisuke , Sadashima Eiji , Sato Hirofumi , Mitsumizo Shinji , Kitahara Kenji 
Published: July 2022

Abstract
Objective Postoperative nausea and vomiting (PONV) is a frequent complication following colorectal surgery. The present study investigated the risk factors for PONV after colorectal cancer surgery.
Methods A retrospective study of 204 patients who underwent surgery for colorectal cancer was conducted. Univariate and multivariate analyses were performed to determine the clinicopathological factors associated with PONV.
Results The overall incidence of postoperative nausea (PON) and postoperative vomit (POV) was 26.5% (54/204), and 12.3% (25/204), respectively. The univariate analysis showed that female gender (p < 0.001), no current alcohol drinking habit (p = 0.003), and no stoma creation (p = 0.023) were associated with PON. Postoperative vomit was significantly correlated with female gender (p = 0.009), high body mass index (p = 0.017), and right-sided colon cancer (p = 0.001). The multivariate logistic regression analysis revealed that female gender (odds ratio [OR]: 4.225; 95% confidence interval [CI]: 2.170–8.226; p < 0.001) was an independent risk factor for PON. A high body mass index (OR: 1.148; 95%CI: 1.018–1.295; p = 0.025), and right-sided colon cancer (OR: 3.337; 95%CI: 1.287–8.652; p = 0.013) were independent risk factors for POV.
Conclusion Our findings suggest that female gender for PON and a high body mass index and right-sided colon cancer for POV are risk factors after colorectal cancer surgery. An assessment using these factors might be helpful for predicting PONV.
Impact of Inpatient Rehabilitation on Quality of Life Among Stroke Patients
Authors: Khanna Meeka , Sivadas Dhinla , Gupta Anupam , Haldar Partha , Prakash Navin B 
Published: July 2022

Abstract
Background Despite remarkable progression in the treatment of stroke, the quality of life (QoL) and social-related events caused by stroke have received limited attention in our country. The assessment of QOL is an important part of the evaluation of stroke patients and their management.
Objective To assess the QoL in patients with stroke at the time of admission in the rehabilitation unit and assess the impact of inpatient rehabilitation on change in QoL in these patients.
Materials and methods Adult patients with first arterial stroke of any duration, with presentation as hemiplegia were recruited. The clinical outcome scales and SF-36 parameters for QOL were assessed at both admission and discharge. The scales used were Scandinavian Stroke Scale (SSS), Barthel Index (BI), modified Rankin Scale (mRS). SF-36 scores were assessed after 6 weeks of discharge also.
Results Ten patients with a median age of 36.5 years and a median duration of stroke 75 days were recruited. There was significant improvement in functional scores of BI and SSS scales at the time of discharge. Majority of the components of both physical and mental domains of QOL SF-36 questionnaire showed significant improvement. The QOL scores after 6 weeks of discharge did not show significant change except for the emotional well-being.
Conclusion The QOL in patients with stroke improves with inpatient rehabilitation along with motor and functional scores. Improved functional independence leads to better emotional state after discharge also.
Systematic analysis of experimental data on productive and reproductive traits of Brazilian dairy herds compared with breeders’ association records
Authors: Castro Ícaro Rainyer Rodrigues , Marcondes Marcos Inácio 
Published: July 2022

Context Dairy farming in Brazil is characterised by heterogeneity in production techniques, herds and kinds of producers; nonetheless, it has expanded in recent years. The data available in the scientific literature regarding breeds used in the system are inconsistent and may not represent the current genetic, productive and reproductive profile of Brazilian herds. Aim This study was developed to understand differences between animals used in experiments and those in breed control assessments. We aimed to evaluate data of Holstein, Gyr, Guzerat, Jersey, Sindhi, Brown Swiss, Holstein × Gyr and Holstein × Guzerat cattle on the traits 305-day milk yield, fat and protein contents, lactation length, age at first calving, and calving interval by comparing research literature and national official control records. Methods National breeders’ associations (NBAs) for each breed or cross were asked to send their official control from 2019 for comparison with 15 years of published data that we retrieved from the literature. Key results Holsteins showed the closest mean for milk yield between literature and NBA data. In Holstein × Gyr crosses, increasing the proportion of Gyr genes decreased milk yield. Jersey data showed the greatest variance between the literature and NBA. For Brown Swiss milk fat, literature values were 12.7% above NBA values. Holsteins had the longest lactation (305 days), and 5/8 Holstein × Gyr the shortest (262 days). For age at first calving, Jerseys were the youngest (26.3 months) and Guzerats the oldest (45.7 months). Jersey cows showed the shortest (best) mean calving interval (12 months), and Sindhi the longest (17 months). NBA data were not available for comparison for some traits in some breeds/crosses. Conclusions Holstein was the most productive breed. Holstein × Gyr crosses, because of adaptation and management, were able to express their productive and reproductive potentials. There was variance between literature and NBA data. Implications We expected that the literature data would somewhat represent the NBA data; however, for most traits, NBA data do not coincide (or do not exist). Literature data need to be collected to represent more closely what is happening at the field level in the national dairy industry.
A semi-supervised algorithm for detecting extremism propaganda diffusion on social media
Authors: Francisco M. , Benítez-Castro M. Á. , Hidalgo-Tenorio E. , Castro Juan L. 
Published: July 2022

Abstract
Extremist online networks reportedly tend to use Twitter and other Social Networking Sites (SNS) in order to issue
propaganda and recruitment statements. Traditional machine learning models may encounter problems when used in such a context, due
to the peculiarities of microblogging sites and the manner in which these networks interact (both between themselves and with
other networks). Moreover, state-of-the-art approaches have focused on non-transparent techniques that cannot be audited; so,
despite the fact that they are top performing techniques, it is impossible to check if the models are actually fair. In this
paper, we present a semi-supervised methodology that uses our Discriminatory Expressions algorithm for feature
selection to detect expressions that are biased towards extremist content (Francisco and
Castro 2020). With the help of human experts, the relevant expressions are filtered and used to retrieve further
extremist content in order to iteratively provide a set of relevant and accurate expressions. These discriminatory expressions
have been proved to produce less complex models that are easier to comprehend, and thus improve model transparency. In the
following, we present close to 70 expressions that were discovered by using this method alongside the validation test of the
algorithm in several different contexts.