bluuebunny/crossref_metadata_2025_split huggingface dataset:
Realizing symmetry-guaranteed pairs of bound states in the continuum in metasurfaces
Authors: Doiron Chloe F. , Brener Igal , Cerjan Alexander 
Published: December 2022

AbstractBound states in the continuum (BICs) have received significant attention for their ability to enhance light-matter interactions across a wide range of systems, including lasers, sensors, and frequency mixers. However, many applications require degenerate or nearly degenerate high-quality factor (Q) modes, such as spontaneous parametric down conversion, non-linear four-wave mixing, and intra-cavity difference frequency mixing for terahertz generation. Previously, degenerate pairs of bound states in the continuum (BICs) have been created by fine-tuning the structure to engineer the degeneracy, yielding BICs that respond unpredictably to structure imperfections and material variations. Instead, using a group theoretic approach, we present a design paradigm based on six-fold rotational symmetry (C6) for creating degenerate pairs of symmetry-protected BICs, whose frequency splitting and Q-factors can be independently and predictably controlled, yielding a complete design phase space. Using a combination of resonator and lattice deformations in silicon metasurfaces, we experimentally demonstrate the ability to tune mode spacing from 2 nm to 110 nm while simultaneously controlling Q-factor.
Deconstruction of a hypothalamic astrocyte-white adipocyte sympathetic axis that regulates lipolysis in mice
Authors: Chen Dan , Qi Yong , Zhang Jia , Yang Yunlei 
Published: December 2022

AbstractThe role of non-neuronal glial cells in the regulation of adipose sympathetic nerve activity and adipocyte functions such as white adipose tissue lipid lipolysis is poorly understood. Here, we combine chemo/optogenetic manipulations of medio-basal hypothalamic astrocytes, real-time fiber photometry monitoring of white adipose tissue norepinephrine (NE) contents and nerve activities, electrophysiological recordings of local sympathetic inputs to inguinal white adipose tissue (iWAT), and adipose tissue lipid lipolytic assays to define the functional roles of hypothalamic astrocytes in the regulation of iWAT sympathetic outflow and lipolysis. Our results show that astrocyte stimulation elevates iWAT NE contents, excites sympathetic neural inputs and promotes lipolysis. Mechanistically, we find that sympathetic paravertebral ganglia (PG) partake in those astrocyte effects. We also find that astrocyte stimulation excitespro-opiomelanocortin(POMC) neurons in the arcuate nucleus of the hypothalamus (ARH), and chemogenetic inhibition of POMC neurons blunts the effects induced by astrocyte stimulation. While we cannot exclude potential roles played by other cell populations such as microglia, our findings in this study reveal a central astrocyte-peripheral adipocyte axis modulating sympathetic drive to adipose tissues and adipocyte functions, one that might serve as a target for therapeutic intervention in the treatment of obesity.
2D honeycomb transformation into dodecagonal quasicrystals driven by electrostatic forces
Authors: Schenk Sebastian , Krahn Oliver , Cockayne Eric , Meyerheim Holger L. , de Boissieu Marc , Förster Stefan , Widdra Wolf 
Published: December 2022

AbstractDodecagonal oxide quasicrystals are well established as examples of long-range aperiodic order in two dimensions. However, despite investigations by scanning tunneling microscopy (STM), low-energy electron diffraction (LEED), low-energy electron microscopy (LEEM), photoemission spectroscopy as well as density functional theory (DFT), their structure is still controversial. Furthermore, the principles that guide the formation of quasicrystals (QCs) in oxides are elusive since the principles that are known to drive metallic QCs are expected to fail for oxides. Here we demonstrate the solution of the oxide QC structure by synchrotron-radiation based surface x-ray diffraction (SXRD) refinement of its largest-known approximant. The oxide QC formation is forced by large alkaline earth metal atoms and the reduction of their mutual electrostatic repulsion. It drives the n = 6 structure of the 2D Ti2O3 honeycomb arrangement via Stone–Wales transformations into an ordered structure with empty n = 4, singly occupied n = 7 and doubly occupied n = 10 rings, as supported by DFT.
Cov-caldas: A new COVID-19 chest X-Ray dataset from state of Caldas-Colombia
Authors: Alzate-Grisales Jesús Alejandro , Mora-Rubio Alejandro , Arteaga-Arteaga Harold Brayan , Bravo-Ortiz Mario Alejandro , Arias-Garzón Daniel , López-Murillo Luis Humberto , Mercado-Ruiz Esteban , Villa-Pulgarin Juan Pablo , Cardona-Morales Oscar , Orozco-Arias Simon , Buitrago-Carmona Felipe , Palancares-Sosa Maria Jose , Martínez-Rodríguez Fernanda , Contreras-Ortiz Sonia H. , Saborit-Torres Jose Manuel , Montell Serrano Joaquim Ángel , Ramirez-Sánchez María Mónica , Sierra-Gaber Mario Alfonso , Jaramillo-Robledo Oscar , de la Iglesia-Vayá Maria , Tabares-Soto Reinel 
Published: December 2022

AbstractThe emergence of COVID-19 as a global pandemic forced researchers worldwide in various disciplines to investigate and propose efficient strategies and/or technologies to prevent COVID-19 from further spreading. One of the main challenges to be overcome is the fast and efficient detection of COVID-19 using deep learning approaches and medical images such as Chest Computed Tomography (CT) and Chest X-ray images. In order to contribute to this challenge, a new dataset was collected in collaboration with “S.E.S Hospital Universitario de Caldas” (https://hospitaldecaldas.com/) from Colombia and organized following the Medical Imaging Data Structure (MIDS) format. The dataset contains 7,307 chest X-ray images divided into 3,077 and 4,230 COVID-19 positive and negative images. Images were subjected to a selection and anonymization process to allow the scientific community to use them freely. Finally, different convolutional neural networks were used to perform technical validation. This dataset contributes to the scientific community by tackling significant limitations regarding data quality and availability for the detection of COVID-19.
Equilibrium space and a pseudo linearization of nonlinear systems
Authors: Sakata Ryotaro , Oshima Tatsuya , Kawai Shin , Nguyen-Van Triet 
Published: December 2022

AbstractThis paper attempts to extend the concept of the equilibrium point to what is called equilibrium space, which can adapt to a system in which there exists an infinite number of equilibrium points. In the context of Lyapunov’s linearization method extended for the equilibrium space, this paper proposes a pseudo linearization, from which we can derive a linear representation for a nonlinear system. The equilibrium state of this pseudo linearization and its stability are shown to be the same as that of the original nonlinear system. As an example of the applicability, the proposed pseudo linearization is applied to derive a discrete-time model for a control moment gyroscope system from a nonlinear continuous-time model. Simulation results show that the discrete-time model derived using the proposed pseudo linearization yields responses that are closer to that of the continuous-time model than the discrete-time model derived by the well-known forward-difference method and the conventional pseudo linear representation method, even with a large sampling interval.
Direct thrombin inhibitors as alternatives to heparin to preserve lung growth and function in a murine model of compensatory lung growth
Authors: Tsikis Savas T. , Hirsch Thomas I. , Fligor Scott C. , Pan Amy , Joiner Malachi M. , Devietro Angela , Mitchell Paul D. , Kishikawa Hiroko , Gura Kathleen M. , Puder Mark 
Published: December 2022

AbstractInfants with congenital diaphragmatic hernia (CDH) may require cardiopulmonary bypass and systemic anticoagulation. Expeditious lung growth while on bypass is essential for survival. Previously, we demonstrated that heparin impairs lung growth and function in a murine model of compensatory lung growth (CLG). We investigated the effects of the direct thrombin inhibitors (DTIs) bivalirudin and argatroban. In vitro assays of lung endothelial cell proliferation and apoptosis were performed. C57BL/6 J mice underwent left pneumonectomy and subcutaneous implantation of osmotic pumps. Pumps were pre-loaded with normal saline (control), bivalirudin, argatroban, or heparin and outcomes were assessed on postoperative day 8. Heparin administration inhibited endothelial cell proliferation in vitro and significantly decreased lung volume in vivo, while bivalirudin and argatroban preserved lung growth. These findings correlated with changes in alveolarization on morphometric analysis. Treadmill exercise tolerance testing demonstrated impaired exercise performance in heparinized mice; bivalirudin/argatroban did not affect exercise tolerance. On lung protein analysis, heparin decreased angiogenic signaling which was not impacted by bivalirudin or argatroban. Together, this data supports the use of DTIs as alternatives to heparin for systemic anticoagulation in CDH patients on bypass. Based on this work, clinical studies on the impact of heparin and DTIs on CDH outcomes are warranted.
Copper laser patterning on a flexible substrate using a cost-effective 3D printer
Authors: Chakraborty Sajal , Park Ho-Yeol , Ahn Sung Il 
Published: December 2022

AbstractWe studied the cost effective direct laser patterning of copper (Cu) on thin polyimide substrates (PI thickness: 12.5–50 µm) using a 405 nm laser module attached to an inexpensive 3D printer. The focal length of the laser was intentionally controlled to reduce defects on patterned Cu and surface damage of PI under predetermined process conditions. The appropriate focal length was examined at various focal distances. Focal distances of − 2.4 mm and 3 mm were found for the shorter focal length (SFL) and longer focal length (LFL), respectively, compared to the actual focal length. This resulted in clean Cu line patterns without line defects. Interestingly, the SFL case had a different Cu growth pattern to that of LFL, indicating that the small difference in the laser incident angle could affect Cu precursor sintering. Cu square patterns had a lower resistivity of 70 μΩ·cm for an LFL after three or four laser scans, while the SFL showed a resistivity below 48 μΩ·cm for a one-time laser scan. The residues of the Cu precursor on PI were easily removed with flowing water and normal surfactants. However, the resistivity of the patterns decreased after cleaning. Among the scan gaps, the Cu square pattern formed at a 70 μm scan gap had the lowest sheet resistance and the least change in resistance from around 4 to 4.4 Ω/ϒ after cleaning. This result implies that the adhesion of the patterned Cu could be improved if the coated Cu precursor was well sintered under the proper process conditions. For the application of this method to bioelectronics, including biosensors, LEDs were connected to the Cu patterns on PI attached to the arm skin and worked well, even when the substrate PI was bent during power connecting.
Effects of Explicit Vocabulary Interventions for Preschoolers: An Exploratory Application of the Percent of Goal Obtained Effect Size Metric
Authors: Patrona Ella , Ferron John , Olszewski Arnold , Kelley Elizabeth , Goldstein Howard 
Published: December 2022

Purpose:
Systematic reviews of literature are routinely conducted to identify practices that are effective in addressing educational and clinical problems. One complication, however, is how best to combine data from both group experimental design (GED) studies and single-case experimental design (SCED) studies. Percent of Goal Obtained (PoGO) has been developed as a metric to express the size of the effect relative to the distance to a goal, which could have broad applicability. This study sought to augment this descriptive index with estimates of standard errors, which are needed to use PoGO as an effect size metric in meta-analyses of SCED and GED studies. This study investigated the application of PoGO and standard errors to both SCED and GED studies examining a common intervention approach used with a single population.

Method:
Sixteen articles investigating explicit vocabulary instruction applied to pre-K and kindergarten students were identified. PoGO and standard errors were calculated for variations of explicit vocabulary interventions. Evaluated interventions included six studies using exclusively an SCED, nine studies using a GED, and one that used both.

Results:
PoGO was calculated for each treatment condition when applicable (i.e., alternating treatments designs). Standard errors and confidence interval limits also were calculated. PoGO effect size values ranged from 14.4% to 93.6%. PoGO for single-case experiments was 49.2% with a standard error of 7.26, and for group experiments, it was 30.8% with a standard error of 3.71.

Conclusion:
Despite variation in the percentage of goal obtained across studies, the high degree of overlap in PoGO and standard errors between single-case and group experiments provides an indication that systematic reviews can apply this effect size metric to combine information obtained across experimental designs.
A local search algorithm with hybrid strategies for the maximum weighted quasi‐clique problem
Authors: Zhou Jincheng , Liu Shuhong , Gao Jian 
Published: December 2022

AbstractIdentifying cohesive subgraphs is an important topic in graph theory and complex network analysis. The quasi‐clique, as a generalization of clique, can be used to identify the functional and structural properties of various networks. In this paper, the authors study the maximum weighted quasi‐clique problem and propose a local search algorithm for solving the problem. In the algorithm, an iterated local search method is used as the search framework. To find the quasi‐clique with the maximum total weights, hybrid vertex selection strategies are proposed and incorporated into the authors’ algorithm. The hybrid strategies utilize a probability‐based mechanism for choosing sub‐strategies in each round of the local search. The authors conduct experiments on synthetic networks and real‐world networks to show the effectiveness of the authors’ algorithm. The results indicate that hybrid strategies perform better than existing methods, and thus the authors’ algorithm has a good ability to tackle various networks.
Reversible hybrid control resonant converter for electric vehicle battery charging and discharging system
Authors: Chen Jeng‐Yue , Wu Sin‐Yan , Chiou Gwo‐Jen , Juang Fuh‐Shyang 
Published: December 2022

AbstractIn this study, the control modes in the newly designed converter include a variable frequency control mode, a phase shift control mode, and hybrid switching with a dual control mode. Compared with the traditional resonant converter, the newly designed converter has the following characteristics: (1) Zero voltage and zero current soft switching to improve converter efficiency in forward and reverse mode and wide voltage range, (2) solves the problem of voltage adjustment being difficult and switching loss increasing at light load for the resonant converter under the variable frequency control mode, (3) hybrid switching with a dual‐control strategy to resolve the design
difficulty of digital control in hybrid switching control mode, (4) a closed loop control for the resonant converter with hybrid switching and dual‐ control mode. Finally, In the forward charging mode, the input voltage is 400 V, the output voltage is 250–450 V, the maximum power is 1000 W, and the maximum efficiency is 96.69%. In reverse discharge mode, the input voltage is 250–450 V, the output voltage is 400 V, and the efficiency at full load is 95.13%. The maximum conversion efficiency is 97.57% when the output power is 840 W.
The softness diagram for MaNGA star-forming regions: diffuse ionized gas contamination or local HOLMES predominance?
Authors: Pérez-Montero E. , Zinchenko I. A. , Vílchez J. M. , Zurita A. , Florido E. , Pérez-Díaz B. 
Published: December 2022

Aims. We explore the so-called softness diagram – whose main function is to provide the hardness of the ionizing radiation in star-forming regions – in order to check whether hot and old low-mass evolved stars (HOLMES) are significant contributors to the ionization within star-forming regions, as suggested by previous MaNGA data analyses.
Methods. We used the code HCM-TEFF to derive both the ionization parameter and the equivalent effective temperature (T*), adopting models of massive stars and planetary nebulae (PNe), and exploring different sets of emission lines in the softness diagram to figure out the main causes of the observed differences in the softness parameter in the MaNGA and CHAOS star-forming region samples.
Results. We find that the fraction of regions with a resulting T* > 60 kK, which are supposedly ionised by sources harder than massive stars, is considerably larger in the MaNGA (66%) than in the CHAOS (20%) sample when the [S II] λλ 6716,6731 Å emission lines are used in the softness diagram. However, the respective fractions of regions in this regime for both samples are considerably reduced (20% in MaNGA and 10% in CHAOS) when the [N II] emission line at λ 6584 Å is used instead. This may indicate that diffuse ionised gas (DIG) contamination in the lower resolution MaNGA data is responsible for artificially increasing the measured T* as opposed to there being a predominant role of HOLMES in the H II regions.
Indikationsstellung in der Adipositastherapie – Surgeons first? // Indications in obesity therapy - surgeons first?
Authors: von Heesen Maximilian 
Published: December 2022

ZusammenfassungDie Adipositas ist weltweit ein zunehmendes Problem. Seit dem Jahr 2010 waren erstmals mehr Menschen übergewichtig als untergewichtig. Insbesondere die adipositasassoziierten Erkrankungen,
allen voran der Diabetes mellitus Typ II, stellen das Gesundheitssystem vor enorme Herausforderungen. Am 3. Juli 2020 hat der Deutsche Bundestag Adipositas als Krankheit anerkannt und die
Entwicklung eines Disease-Management-Programms (DMP) angestoßen, das zurzeit ausgearbeitet wird. Bisher richtet sich die Indikation einer Behandlung der Adipositas in Deutschland nach der
S3-Leitlinie „Chirurgie der Adipositas und metabolischer Erkrankungen“ der DGAV von 2018 und der S3-Leitlinie „Prävention und Therapie der Adipositas“ der Deutschen Adipositas-Gesellschaft
e. V. von 2014. Dieser Artikel gibt einen Überblick über die aktuell in Deutschland verfügbaren konservativen, medikamentösen, endoskopischen und chirurgischen Therapiemethoden des
Übergewichts und der Adipositas und erläutert die Indikationen. Vor dem Hintergrund der Neuausrichtung der Adipositasbehandlung im Rahmen des DMP und der anstehenden Überarbeitungen der
Leitlinien sollte die bisherige Indikationsstellung kritisch diskutiert werden. Die wissenschaftlichen Erkenntnisse der letzten Jahre zeigen, dass durch eine chirurgische Behandlung der
Adipositas aktuell im Langzeitverlauf nicht nur der größte Gewichtsverlust erreicht wird, sondern auch, dass adipositasassoziierte Erkrankungen effektiver behandelt werden und die
Gesamtmortalität im Vergleich zur konservativen Behandlung deutlich effektiver gesenkt wird.
Virtual Planning and 3D Printing in the Management of Acute Orbital Fractures and Post-Traumatic Deformities
Authors: Sharaf Basel , Leon Daniel E. , Wagner Lilly , Morris Jonathan M. , Salinas Cristina A. 
Published: December 2022

AbstractVirtual surgical planning (VSP) and three-dimensional (3D) printing have advanced surgical reconstruction of orbital defects. Individualized 3D models of patients' orbital bony and soft tissues provide the surgeon with corrected orbital volume based on normalized anatomy, precise location of critical structures, and when needed a better visualization of the defect or altered anatomy that are paramount in preoperative planning. The use of 3D models preoperatively allows surgeons to improve the accuracy and safety of reconstruction, reduces intraoperative time, and most importantly lowers the rate of common postoperative complications, including over- or undercontouring of plates, orbital implant malposition, enophthalmos, and hypoglobus. As 3D printers and materials become more accessible and cheaper, the utility of printing patient-specific implants becomes more feasible. This article summarizes the traditional surgical management of orbital fractures and reviews advances in VSP and 3D printing in this field. It also discusses the use of in-house (point-of-care) VSP and 3D printing to further advance care of acute orbital trauma and posttraumatic deformities.
Modulating multiple leakage current mechanisms in the [LaNiO3/Ba0.67Sr0.33TiO3]3 multilayer heterostructure thin films via dielectrics/electrode interface modifications
Authors: Yu Tong , Liu Yun , Huang Binbin , Chen Xiaoyang , Yu Ping 
Published: December 2022

Ferroelectric (FE) multilayer heterostructure films have attracted significant attention due to their superior dielectric performance, which shows increasing opportunities in the application of energy storage capacitors or high-capacitance density systems. However, the leakage current density in FE multilayer heterostructure thin films is closely linked to the thickness of each single FE layer and the number of hetero-structure interfaces. In Pt/[LaNiO3/Ba0.67Sr0.33TiO3]3 (Pt/[LNO/BST]3) multilayer thin films, the dominant leakage current mechanism is Poole–Frenkel (PF) emission at room temperature. The space charge limited current (SCLC) and the co-dominated leakage current mechanism from the PF and Schottky (SC) emissions were observed under higher operating temperatures. After inserting an ultrathin SrTiO3 (STO) layer between the Pt/[LNO/BST]3 multilayer thin films and the top Au electrode, the SCLC region was replaced by an Ohmic region, and the SC emission was not detected in the temperature range of 288–368 K. Moreover, the calculated zero-field energy barriers ϕPF of PF emission are higher than the prepared multilayer thin films without the STO layer. Consequently, the leakage current density of Pt/[LNO/BST]3 thin films showed a significant decrease.
Second order hydrodynamics based on effective kinetic theory and electromagnetic signals from QGP
Authors: Naik Lakshmi J , Sreekanth V 
Published: December 2022

Abstract
We study the thermal dilepton and photon production from relativistic heavy ion collisions in presence of viscosities by employing the recently developed second order dissipative hydrodynamic formulation estimated within a quasiparticle description of thermal quantum chromo-dynamics (QCD) medium. The sensitivity of shear and bulk viscous pressures to the temperature dependence of relaxation time is analyzed within one- dimensional boost invariant expansion of quark gluon plasma (QGP). The dissipative corrections to the phase-space distribution functions up to first order in gradients are obtained from the Chapman–Enskog like iterative solution of effective Boltzmann equation in the relaxation time approximation. Thermal dilepton and photon production rates for QGP are calculated by employing this viscous modified distribution function. Yields of these particles are quantified for the longitudinal expansion of QGP with different temperature dependent relaxation times. Our analysis employing this second order hydrodynamic model indicates that the spectra of dileptons and photons get enhanced by both bulk and shear viscosities and are well behaved. Also, these particle yields are found to be sensitive to relaxation time. Further, we do a comparison of these particle spectra with a standard hydrodynamic formulation.