bluuebunny/crossref_metadata_2025_split huggingface dataset:
An optimal transport theory based approach for efficient dispatch of transactions in energy markets
Authors: Gumpu Sreenivasulu , Sahoo N C , Pamulaparthy Balakrishna 
Published: June 2023

AbstractNowadays, transactive energy markets (TEMs) are emerging as interesting frameworks in deregulated power markets to control the balance of supply and demand in the entire electrical network. Due to wide deployment of renewable energy resources, grid connected micro‐grids, and open access transmission and distribution networks, the planning and operation of TEMs become complex. So, an efficient optimal dispatch model for TEMs should be developed to achieve the objectives of TEMs, such as feasible sizes of transactions and optimal dispatch of these transactions with minimal operating costs. The transactive dispatch problem is similar to the resource allocation/matching problem. Recently, optimal transport (OT) has received significant attention in various fields including optimization theory and resource matching problems due to its potency and relevance in modeling and optimization. An OT‐based approach is proposed here for optimal dispatch of transactions in energy markets while minimizing the cost of transactions considering the operating constraints of the system. The proposed approach can efficiently determine the feasible sizes of transactions without any security issues. The optimal solutions of the OT‐based approach are obtained using a Sinkhorn iterative technique. Also, the load uncertainties are considered in this work to analyse the impacts of load uncertainties on the optimal dispatch of transactions. The numerical simulation results on the modified IEEE 9‐bus system, modified IEEE 57‐bus system, modified IEEE 118‐bus system, and Indian Northern Regional Power Grid system illustrate the efficacy of the proposed OT‐based framework.
Dynamic thermal rating assessment of oil‐immersed power transformers for multiple operating conditions
Authors: Zhang Chen , Dong Xuzhu , Ruan Jiangjun , Deng Yongqing 
Published: June 2023

AbstractIn this article, the dynamic thermal rating assessment method of oil‐immersed power transformer with multiple operating conditions is proposed, considering the constraints of hot spot temperature (HST), top oil temperature, losses of life and the maximum allowable current of on‐load tap changer (OLTC) or bushing, which can determine the dynamic load curves under different operating conditions and give the most sensitive constraints to limit the dynamic load capacity. To improve the accuracy of HST estimation, the temperature estimation model is also improved and the thermal parameters are optimised using the HST measured by optical fibre. Finally, several application examples are studied for transformers in different scenarios. The results show that the normal cyclic dynamic transformer rating (DTR) is mainly limited by the losses of life when the ambient temperature is high, and the average load factor can be increased to 0.82 with a maximum load capacity of 1.23. The main limiting factor of short‐term DTR is the OLTC or bushing current constraint, and the average load factor can be increased to 1.00. The maximum load capacity of the transformer under both operating conditions is 23% and 50% higher than its rated load capacity, indicating that the transformer still has a large load potential available.
An electromagnetic scattering reanalysis method for partial geometry modifications
Authors: Fan Chaoqun , Wei Gao , Li Jianzhou 
Published: June 2023

AbstractThis work proposes an effective and accurate method for solving the partial geometry modification problem of original scattering. The current and scattering characteristics after structure modification can be efficiently calculated by using the information of the initial impedance matrix. These modifications include adding geometry or moving and rotating different parts of geometry. Although the changes in each impedance matrix are local for partial modified geometries, the associated computational cost is high because the whole analysis is iterative. By combining the binomial series method and the reduced basis method, the proposed method can effectively evaluate the scattering field without solving the inverse impedance matrix of the modified geometry. The proposed algorithm has a computational cost of O(n2), which is much smaller than O(n3) of the traditional method of moments (MoM), where n is the number of unknowns. Through several examples, the traditional MoM and the proposed method are compared, and the efficiency and accuracy of the proposed method are proved.
Design of a dual‐CP gap waveguide fed aperture array antenna
Authors: Zarifi Davoud , Farahbakhsh Ali , Zaman Ashraf Uz 
Published: June 2023

AbstractA slot array antenna with dual‐circular polarisation (CP) is presented in this paper. To overcome the fabrication and loss challenges in mm‐wave frequencies, the gap waveguide technique is utilised. The right and left hand circular polarisation (RHCP and LHCP) radiations are achieved using slots‐fed stepped septum polariser on the longitudinal slot arrays. The waveguides and feeding layer are based on ridge gap waveguide. The experimental results demonstrate the |S11| and axial ratio of proposed antenna array are lower than −10 and 2 dB, respectively over the frequency range of 29.1–31.7 GHz. The proposed antenna exhibits the measured peak gain of 27.2 dBic at 30.2 GHz. The results prove that the proposed array antenna is a brilliant choice for 30 GHz‐band applications and could be developed to realise larger dual‐polarised planar arrays.
Modal analysis, control of frequency, and torsional modes of microgrid with doubly fed induction generator wind turbines providing frequency support
Authors: Chuang Cheng‐Han , Chiu Bing‐Kuei , Lee Kuei‐Yen , Hsu Yuan‐Yih 
Published: June 2023

AbstractLoad changes in a microgrid comprising diesel generators and wind turbines cause oscillations in system frequency. In this paper, an analytical model that takes wind generator speed deviation into account is proposed to evaluate the oscillation frequency and damping ratio of the frequency mode oscillation when the wind turbines participate in ancillary frequency control. Because the frequency mode oscillation may excite torsional modes, a complete linearized model comprising the diesel generators and the five‐mass drivetrain of the wind turbine is formulated, and the mode shapes as well as the frequencies and damping ratios of the torsional modes are analyzed. To improve damping for the torsional modes, a constant damping ratio design method is proposed to move the eigenvalues of poorly damped modes to points along a line with a constant damping ratio on the complex plane. Dynamic simulations are performed on the microgrid subject to load changes and wind fluctuations in order to validate the results from mode shape analyses as well as demonstrate the effectiveness of the designed torsional damper.
Type II radio bursts and their association with coronal mass ejections in solar cycles 23 and 24
Authors: Kumari A. , Morosan D. E. , Kilpua E. K. J. , Daei F. 
Published: June 2023

Context. Meter-wavelength type II solar radio bursts are thought to be the signatures of shock-accelerated electrons in the corona. Studying these bursts can give information about the initial kinematics, dynamics, and energetics of coronal mass ejections (CMEs) in the absence of white-light observations.
Aims. We investigate the occurrence of type II bursts in solar cycles 23 and 24 and their association with CMEs. We also explore whether type II bursts might occur in the absence of a CME.
Methods. We performed a statistical analysis of type II bursts that occurred between 200 and 25 MHz in solar cycles 23 and 24 and determined the temporal association of these radio bursts with CMEs. We categorized the CMEs based on their linear speed and angular width and studied the distribution of type II bursts with fast (≥500 km s−1), slow (< 500 km s−1), wide (≥60°), and narrow (< 60°) CMEs. We explored the dependence of type II bursts occurrence on the phases of the solar cycle.
Results. Our analysis shows that during solar cycles 23 and 24, 768 and 435 type II bursts occurred, respectively. Of these, 79% were associated with CMEs in solar cycle 23, and 95% were associated with CMEs in solar cycle 24. However, only 4% and 3% of the total number of CMEs were accompanied by type II bursts in solar cycle 23 and 24, respectively. Most of the type II bursts in both cycles were related to fast and wide CMEs (48%). We also determined the typical drift rate and duration for type II bursts, which is 0.06 MHz s−1 and 9 min. Our results suggest that type II bursts dominate at heights ≈1.7 − 2.3 ± 0.3 R⊙. A clear majority have an onset height around 1.7 ± 0.3 R⊙ assuming the four-fold Newkirk model.
Conclusions. The results indicate that most of the type II bursts had a white-light CME counterpart, but a few type II bursts lacked a clear CME association. There were more CMEs in cycle 24 than in cycle 23. However, cycle 24 contained fewer type II radio bursts than cycle 23. The onset heights of type II bursts and their association with wide CMEs reported in this study indicate that the early lateral expansion of CMEs may play a key role in the generation of these radio bursts.
Effects of multiphase gas and projection on X-ray observables in simulated galaxy clusters as seen by eROSITA
Authors: ZuHone J. , Bahar Y. E. , Biffi V. , Dolag K. , Sanders J. , Bulbul E. , Liu T. , Dauser T. , König O. , Zhang X. , Ghirardini V. 
Published: June 2023

Context. Galaxy clusters are the most massive bound objects in the recent history of the universe; the number density of galaxy clusters as a function of mass and redshift is a sensitive function of the cosmological parameters. To use clusters for cosmological parameter studies, it is necessary to determine their masses as accurately as possible, which is typically done via scaling relations between mass and observables.
Aims. X-ray observables can be biased by a number of effects, including multiphase gas and projection effects, especially in the case where cluster temperatures and luminosities are estimated from single-model fits to all of the emission with an overdensity radius such as r500c. Using simulated galaxy clusters from a realistic cosmological simulation, our aim is to determine the importance of these biases in the context of Spectrum-Roentgen-Gamma/eROSITA observations of clusters.
Methods. We extracted clusters from the Box2_hr simulation from the Magneticum suite, and simulated synthetic eROSITA observations of these clusters using PHOX to generate the photons and the end-to-end simulator SIXTE to trace them through the optics and simulate the detection process. We fitted the spectra from these observations and compared the fitted temperatures and luminosities to the quantities derived from the simulations. We fitted an intrinsically scattered LX − T scaling relation to these measurements following a Bayesian approach with which we fully took into account the selection effects and the mass function.
Results. The largest biases on the estimated temperature and luminosities of the clusters come from the inadequacy of single-temperature model fits to represent emission from multiphase gas, and from a bias arising from cluster emission within the projected r500c along the line of sight but outside of the spherical r500c. We find that the biases on temperature and luminosity due to the projection of emission from other clusters within r500c is comparatively small. We find eROSITA-like measurements of Magneticum clusters following a LX − T scaling relation that has a broadly consistent but slightly shallower slope compared to the literature values. We also find that the intrinsic scatter of LX at given T is lower compared to the recent observational results where the selection effects are fully considered.
Comprehensive Analysis of Hemophilia A (CAHEA): Towards Full Characterization of the F8 Gene Variants by Long-Read Sequencing
Authors: Liu Yingdi , Li Dongzhi , Yu Dongyi , Liang Qiaowei , Chen Guilan , Li Fucheng , Gao Lu , Li Zhuo , Xie Tiantian , Wu Le , Mao Aiping , Wu Lingqian , Liang Desheng 
Published: June 2023

Background Hemophilia A (HA) is the most frequently occurring X-linked bleeding disorder caused by heterogeneous variants in the F8 gene, one of the largest genes known. Conventional molecular analysis of F8 requires a combination of assays, usually including long-range polymerase chain reaction (LR-PCR) or inverse-PCR for inversions, Sanger sequencing or next-generation sequencing for single-nucleotide variants (SNVs) and indels, and multiplex ligation-dependent probe amplification for large deletions or duplications.
Materials and Methods This study aimed to develop a LR-PCR and long-read sequencing-based assay termed comprehensive analysis of hemophilia A (CAHEA) for full characterization of F8 variants. The performance of CAHEA was evaluated in 272 samples from 131 HA pedigrees with a wide spectrum of F8 variants by comparing to conventional molecular assays.
Results CAHEA identified F8 variants in all the 131 pedigrees, including 35 intron 22-related gene rearrangements, 3 intron 1 inversion (Inv1), 85 SNVs and indels, 1 large insertion, and 7 large deletions. The accuracy of CAHEA was also confirmed in another set of 14 HA pedigrees. Compared with the conventional methods combined altogether, CAHEA assay demonstrated 100% sensitivity and specificity for identifying various types of F8 variants and had the advantages of directly determining the break regions/points of large inversions, insertions, and deletions, which enabled analyzing the mechanisms of recombination at the junction sites and pathogenicity of the variants.
Conclusion CAHEA represents a comprehensive assay toward full characterization of F8 variants including intron 22 and intron 1 inversions, SNVs/indels, and large insertions and deletions, greatly improving the genetic screening and diagnosis for HA.
Synthesis of (2-Aminopyrimidin-4-yl)(pyridin-4-yl)methanone and Derivatives
Authors: Giraud Francis , Anizon Fabrice , Moreau Pascale , Josselin Béatrice , Ruchaud Sandrine 
Published: June 2023

AbstractPyrido[3,4-g]quinazoline was previously identified as a relevant scaffold for protein kinase inhibition. In order to assess if the planarity of this heterocyclic system was essential to the protein kinase inhibitory potency observed in this series, new compounds were synthesized and evaluated, in which the central cycle was opened to provide (pyridin-4-yl)(pyrimidin-4-yl)methane derivatives, which were prepared from the corresponding ketone precursor. After preparing (2-aminopyrimidin-4-yl)(pyridin-4-yl)methanone, derivatives were synthesized and evaluated toward a panel of protein kinases. The results demonstrated that the planar pyrido[3,4-g]quinazoline tricyclic system was mandatory to maintain the protein kinase inhibitory potency in this series.
Suzuki–Miyaura Coupling of Aryl Nosylates with Diethanolamine Boronates
Authors: Kohler Philipp , Perrin Timothé , Schäfer Gabriel 
Published: June 2023

AbstractDiethanolamine boronates (DABO boronates) have gained popularity as substrates for Suzuki–Miyaura couplings due to their ease of handling as crystalline, bench-stable solids. Similarly, 4-nitrobenzenesulfonate esters (nosylates), derived from the parent phenols, also possess the advantage of being highly crystalline and stable. Herein, we describe the development of suitable reaction conditions for the Suzuki–Miyaura cross-coupling of DABO boronates with aryl and heteroaryl nosylates.
Catalyst-Free, Multicomponent Reaction of Iodonium Ylides, Nitrosoarenes, and Olefins for the Synthesis of Isoxazolidine Derivatives
Authors: Li Lei , Xuan Jun , Zhao Yan-Rui 
Published: June 2023

AbstractA general and efficient three-component protocol for the synthesis of isoxazolidines has been developed. A range of nitrosoarenes, olefins, as well as iodonium ylides can be subjected to this reaction to generate the N-aryl isoxazolidines derivatives with moderate to excellent yields. In addition, we demonstrate that this approach employs the 1,3-dipolar cycloaddition of nitrones generated in situ from iodonium ylides and nitroso compounds, with olefins in the absence of any catalysts and additives.
Artroscopia y Tenoscopia en el Tratamiento de la Tenosinovitis del Sexto Compartimento: Descripción Técnica y Serie de Pacientes
Authors: de Oliveira Ricardo Kaempf , Brunelli João Pedro Farina , Aita Márcio , Delgado Pedro J. , Torres Elisa De Torres-De , Corella Fernando 
Published: June 2023

ResumenDenominamos tenoscopia al procedimiento en el que se realiza un abordaje endoscópico de las vainas tendinosas. Ya se ha descrito para el tratamiento de trastornos de tobillo, codo, hombro, muñeca y mano. Hemos tratado con tenoscopia una serie de ocho muñecas en seis pacientes con procesos inflamatorios crónicos del sexto compartimento extensor de la muñeca sin mejoría con tratamiento conservador inicial. El procedimiento comienza con una artroscopia de los espacios radiocarpiano y mediocarpiano para descartar otras causas intraarticulares de dolor en el lado cubital de la muñeca. Luego, a través del portal 6R, se reseca la cápsula y la porción profunda de la vaina del extensor carpi ulnaris, accediendo a la cara interna del sexto compartimiento. Con la vista completa del sexto compartimento interno, se crea un portal específico para el extensor carpi ulnaris ubicado dos centímetros proximal a la articulación. Luego se realiza una sinovectomía amplia del compartimiento con rasuradora, tanto proximal como distal a la articulación. La rama sensible dorsal del nervio cubital permanece segura durante todo el procedimiento. Hemos realizado tenoscopia del sexto compartimento extensor en ocho muñecas de seis pacientes en los que había fracasado el tratamiento conservador y hemos obtenido una gran mejoría de los síntomas con el procedimiento, sin complicaciones graves ni recidiva de la lesión. La tenoscopia del extensor carpi ulnaris permite la sinovectomía del sexto compartimento extensor, conservando el retináculo extensor. Con un enfoque mínimamente invasivo, este procedimiento causa menos daño local a los tejidos blandos, con menos formación de tejido cicatricial en comparación con los procedimientos abiertos clásicos. Al utilizar una visión clara del compartimento a través de la tenoscopia, se reduce el riesgo de adherencias y lesiones en los tendones extensores cubitales.
Distributed micro-energy harvesting for next generation of IoT in various scenarios
Authors: Wang Yan , Zhang Haonan , Wang Mingyong , Zhang Xiao-Sheng 
Published: June 2023

Abstract
Recently, internet of things (IoT) attracts increasing attention and it tends to be applied in every aspect of life, due to the development of computer technology, sensor technology and micro/nano technology. Although IoT plays an important role in modern society to achieve smart life, it has to overcome the restriction of non-durable power source and to construct wireless sensor networks. Micro-energy harvesting technology from the environment is a powerful and promising approach to solve the energy supporting problem for wider applications of IoT. This article gives an overview of the recent developments of self-sustained IoT from the perspectives of energy harvesting technology and related technologies. The various energy harvesting techniques and the applications of IoT in different scenario are collected and presented. The energy schemes to prolong and optimize the energy in the WSN for IoT are discussed. Furthermore, perspectives and outlooks of self-powered IoT based on the micro-energy harvesting technology are presented.
Characterization of thin film Parylene C device curvature and the formation of helices via thermoforming
Authors: Thielen Brianna , Meng Ellis 
Published: June 2023

Abstract
In microfabricated biomedical devices, flexible, polymer substrates are becoming increasingly preferred over rigid, silicon substrates because of their ability to conform to biological tissue. Such devices, however, are fabricated in a planar configuration, which results in planar devices that do not closely match the shape of most tissues. Thermoforming, a process which can reshape thermoplastic polymers, can be used to transform flat, thin film, polymer devices with patterned metal features into complex three-dimensional (3D) geometries. This process extends the use of planar microfabrication to achieve 3D shapes which can more closely interface with the body. Common shapes include spheres, which can conform to the shape of the retina; cones, which can be used as a sheath to interface with an insertion stylet; and helices, which can be wrapped around nerves, blood vessels, muscle fibers, or be used as strain relief feature. This work characterizes the curvature of thin film Parylene C devices with patterned metal features built with varying Parylene thicknesses and processing conditions. Device curvature is caused by film stress in each Parylene and metal layer, which is characterized experimentally and by a mathematical model which estimates the effects of device geometry and processing on curvature. Using this characterization, an optimized process to thermoform thin film Parylene C devices with patterned metal features into 0.25 mm diameter helices while preventing cracking in the polymer and metal was developed.
Blue- and red-shifts of the harmonics generated in laser-induced plasmas
Authors: Ganeev Rashid A 
Published: June 2023

Abstract
We demonstrate double-peak spectral splitting in high-order harmonics generated in graphite plasma, which is mainly attributed to the propagation effects of high harmonics in the ionizing medium. The splitting of high harmonics can also be interpreted as a result of the double-peak structure in the spectral profile of the propagated driving pulse. The shift and intensity of these peaks, compared with unshifted harmonics, depend on different parameters of the experiment like plasma density, the position of the focal plane, and laser intensity.
Full-life-cycle eco-friendly polymeric insulating materials: research progress and future prospects
Authors: Li Wendong , Zhang Yucheng , Zhao Xin , Liu Ruixuan , Liu Hechen , Huang Zhengyong , Zhang Guanjun 
Published: June 2023

Abstract
Polymeric insulating materials is the basis of electric power system and has been widely employed in various electric power system apparatus. With the emergence of net-zero carbon emission policies by 2050–2060, the eco-friendly polymeric insulation is urgent and promising in the R&D of advanced dielectric materials. This paper reviews the current progress of eco-friendly upgrade in each lifecycle stages of polymeric insulating materials, i.e. raw material, fabricating, operating, and retiring. A series of interesting and fundamental results have been summarized. Drawbacks of the current researches are discussed, and outlooks are provided for the future development of eco-friendly polymeric insulating materials. This paper is hoped to inspire some novel ideas for the development of advanced insulating materials suitable for the promotion of net-zero carbon emission technologies.