bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of the learning curve and safety outcomes in robotic assisted vaginal natural orifice transluminal endoscopic hysterectomy: A case series of 84 patients
Authors: Liu Juan , Tan Liping , Thigpen Brooke , Koythong Tamisa , Zhou Xingnan , Liu Qihuang , Wang Qianqing , Guan Xiaoming 
Published: March 2022

AbstractBackgroundTo explore the learning curve and safety outcomes of robotic assisted transvaginal natural orifice transluminal endoscopic surgery (R‐vNOTES) for hysterectomy in benign gynaecological diseases.MethodsA retrospective chart review of all patients undergoing R‐vNOTES hysterectomy for benign gynaecological disease from 2019 to 2021.SettingAn academic tertiary care university hospital in Houston, TX, USA.Results84 patients were identified that met the study requirements. The mean hysterectomy time was 77.27 ± 2.89 min. The median additional operation time was 63 (8–206) min. There were two conversions to robotic assisted single incision laparoscopy. Thirteen (15.48%) patients had an associated complication. Analysis of the learning curve suggests plateauing of hysterectomy time at approximately 10 cases and time for robot docking and port placement after 10–20 cases.ConclusionR‐vNOTES is a safe and effective route for hysterectomy. For a surgeon with experience in laparoscopic single site surgery and abdominal robotic surgery, they need to perform 10 cases of R‐vNOTES hysterectomy and 10–20 cases in port placement and robotic docking to achieve proficiency.
Future hydropower operations in the Zambezi River basin: Climate impacts and adaptation capacity
Authors: Arias Mauricio E. , Farinosi Fabio , Hughes Denis A. 
Published: March 2022

AbstractSouthern Africa could experience major hydrological changes in coming decades, bringing drastic changes to hydropower. Focusing on four large hydropower dams in the Kafue and Zambezi Rivers (Itezhi‐Tezhi, Kafue Gorge Upper, Kariba, and Cahora Bassa), accounting for over 90% of the installed capacity in the basin, this study analyzed how these dams have altered river flows in the past, and how hydropower generation could be affected by future climate change and water use scenarios based on dynamically downscaled simulations from the Fifth Coupled Model Intercomparison Project for a Representative Concentration Pathway of 8.5 W/m2. Future climate change could affect reservoir levels by decreasing water inflows and by increasing evaporation. Results showed a decrease in median annual water levels for all reservoirs, with largest changes expected at Itezhi‐Tezhi (−1.3 to −3.3 m), followed by Cahora Bassa (−0.8 to −2.8 m), Kariba (−0.2 to −0.9), and Kafue Gorge (0.1–0.2 m). Flows downstream of dams show a consistent negative trend, with mean annual flow changes of −30% to −49% at the furthest downstream gauge. The combined reduction in water levels and flows could result in decreases on average annual hydropower generation and increases in interannual variability; annual generation could decrease by −61% to −28% at Kariba, by −51% to −21% at Itezhi‐Tezhi, by −7% to −39% at Kafue Gorge, and −27% to −9% at Cahora Bassa. Reservoir operation optimization could marginally offset the projected changes in hydropower generation, with largest gains for Kariba (+6%) and Cahora Bassa (+10%). Overall, opportunities to offset losses via operations would probably decrease with the expected drier climate and escalating reduction in river discharge and water availability. Given these negative projections, it is becoming critical to adapt and coordinate reservoir operations to best cope with the expected challenging future in this important river basin.
Graphene‐Based Conductive Networks to Enhance the Performance of Polyimide Anode Materials for Dual‐Ion Batteries
Authors: Jiang Bo , Zhu Weichen , Cai Zehua , Zeng Yong , Xiao Rengui 
Published: March 2022

AbstractOrganic electrodes suffer from undesirable active site utilization and instability to solvents. Generally, polymerization is an effective way of inhibiting the dissolution of organics and ameliorating the rapid decline in battery capacity. However, the low electrical conductivity of polymers restricts their practical application. In this study, a dual‐ion battery based on a polyimide/graphene compounds was constructed. Experiments reveal that the π electrons of polyimide can be quickly transferred through graphene and exhibit ultrafast reaction kinetics, thereby improving the capacity performance. Consequently, the dual‐ion battery with a polyimide–graphene anode achieves a discharge capacity of 76.6 mAh g−1 and demonstrates a capacity retention of 80 % at a high rate of 6300 mA g−1 after 500 cycles. Additionally, the redox reaction process was studied systematically.
The effects of welfare time limits on access to financial resources: Evidence from the 2010s
Authors: Pepin Gabrielle 
Published: March 2022

AbstractThe Personal Responsibility and Work Opportunity Reconciliation Act of 1996 established the Temporary Assistance for Needy Families (TANF) program within the United States. TANF mandated 60‐month lifetime time limits for federal cash assistance dollars. Because states reserve the right to set their own stricter or more generous time limits, the 60‐month lifetime limit did not bind in all cases. In recent years, however, several states imposed TANF time limits for the first time or made existing time limits more stringent. Using administrative and survey data, I find that stricter time limits decrease TANF participation within the past 12 months by 26%. Unlike previous research, I find heterogeneous effects of time limits on labor supply. I show that expected effects on employment and earnings decrease—and eventually become negative—as a state's unemployment rate increases. Evidence suggests that removing welfare recipients from TANF during periods of high unemployment inhibits their access to financial resources.
Import and export trade forecasting algorithm based on blockchain security andPSOoptimized hybrid RVM model
Authors: Wang Yue 
Published: March 2022

AbstractWith the rapid development of globalization economy, countries in the world are more and more closely connected in business, and international import and export trade has also achieved rapid development. Based on the analysis of the status quo of the country's import and export trade, this article combines the main national economic indicators to analyze and study the algorithm of import and export trade forecasting. RVM is a sparse probability model and a new supervised learning method. Firstly, this paper introduces the protection system of block chain technology for import and export trade data information. Then, a hybrid RVM model is constructed, which is optimized by PSO algorithm, and the import and export volume is predicted based on this model. Based on the analysis of the data, it is tested that the security protection coefficient of the blockchain security technology for import and export trade data can reach up to 99.9%, and the accuracy of the import and export trade forecast based on the PSO optimized hybrid RVM model can reach up to 85.79%. A series of experiments show that the import and export trade forecast model studied in this paper can accurately predict the volume of import and export trade, thus providing a new method for the country's import and export trade, with high practical significance.
The Effect and Regulation Mechanism of Powdery Mildew on Wheat Grain Carbon Metabolism
Authors: Gao Hongyun , Niu Jishan , Zhao Wanyong , Zhang Dale , Li Suoping , Xu Yanhua , Liu Yumiao 
Published: March 2022

AbstractThe effects of powdery mildew on gene expressions and activities of carbon (C) metabolism enzymes in Zhengmai 103 (resistant) and Xi'nong 979 (susceptible) are studied. Under severe powdery mildew, expressions and activities of sucrose synthase, uridine‐diphosphate glucose pyrophosphorylase, glyceraldehyde‐3‐phosphate dehydrogenase (GAPDH), and cytosolic α‐1,4‐glucan phosphorylase decrease at 20 or 25–30 days after anthesis, and total soluble sugars content also decreases. It indicates that the first part of C metabolism (sucrose degradation) changes and total C flux reduces. Meanwhile, decreases in expressions and activities of adenosine‐diphosphate glucose pyrophosphorylase (AGPase), soluble starch synthase (SSS), starch‐branching enzyme I and II (SBEI and SBEII), and plastidic α‐1,4‐glucan phosphorylase coincide with decreases in amylopectin content, whereas increases in granule‐bound starch synthase I (GBSSI) expression and activity coincide with increases in amylose content. It shows that the second part of C metabolism (starch synthesis) changes. Therefore, powdery mildew alters C metabolism. In addition, it also induces defense responses in grains, such as the up‐regulation of a defense‐related protein endogenous α‐amylase/subtilisin inhibitor. Since GAPDH, AGPase, SSS, SBEII, and GBSSI are regulated by redox, changes of C metabolism are mainly regulated by cellular redox status.
Compression behavior of reinforced concrete columns jacketed with multi‐spiral transverse reinforcement
Authors: Hao Meijing , Zheng Wenzhong , Chang Wei 
Published: March 2022

AbstractThe objective of this study was to investigate the compressive behavior of reinforced concrete (RC) columns jacketed by modified multi‐spiral transverse reinforcement, in which columns were jacketed by a large welded octagonal stirrup at the center and four small spiral stirrups at the corners of specimens. Sixteen large‐scale concrete columns were jacketed by the proposed method and subjected to axial compression tests. The investigated parameters included the axial compression ratio of existing column and the volumetric ratio of stirrups in jacket. The experimental results revealed that the jacketed columns failed by the formation of an inclined shear failure plane and specimens still kept rather high load‐bearing capacity after core concrete crushed, owing to the multiple confinement materials in jacket. The axial load‐strain curves of specimens could be divided into four phases, corresponding to failure modes. Furthermore, increasing the volumetric ratio of stirrups in jacket effectively improved ductility of jacketed RC columns compared to the load‐bearing capacity, while increasing the axial compression ratio of existing column decreased the enhancement of jacket. Six recent confinement models were selected to predict the peak strength of confined concrete and the corresponding strain. The predicted models performed well in the ascending branch of the analytical stress–strain curves, while the descending branch showed a lower rate of decrease than experimental values. The compression behavior of RC columns jacketed by modified multi‐spiral transverse reinforcement was analyzed, and the effects of axial compression ratios of existing columns and the volumetric ratio of stirrups of jacket on the compression behavior of columns were exhibited. Furthermore, the experimental results were evaluated by six existing models.
Static test and theoretical study on semirigid pin joint for modular steel reticulated shell
Authors: Zhang Ai‐Lin , Li Chong , Zhang Yan‐Xia , Liu Xue‐Chun 
Published: March 2022

SummaryIn order to realize the modularity and rapid assembly of steel reticulated shells in the construction site, a new type of simple assembled joint named semirigid pin joint is proposed for modular steel reticulated shell in this paper. While on the premise of meeting the stiffness and strength requirement, complicated procedures such as tightening nuts and controlling pretightening force are avoided in this joint. In addition, the joints can adapt to the complex curvature changes of reticulated shells. When it is connected in the middle of the member, the new joint can realize the connection of arc members. First, experiments were carried out on different screw rod diameters, wing plate pin diameters, and the number of wing plate pins. Different failure modes and M–Φ curves of semirigid pin joints were obtained. The stiffness and strength of the joints were studied. Second, a three‐dimensional finite element model of the joint was established by ABAQUS, and the comparison between the simulated results and the experimental results proved the accuracy of the finite element numerical analysis. On this basis, the antirotation stiffness, strength, and failure mode of the new joint with different parameters were compared and discussed, and the influence law of each parameter on the mechanical properties of the new joint was obtained. Finally, based on the power function model, a theoretical analysis model for estimating the M–Φ curve of the joint was established. Compared with the results of the experiments, the results indicated that the prediction formula has high accuracy.
Modified Lipschitz Optimization and its Application to Maximum Power Point Tracking Control for Photovoltaic Systems
Authors: Masuda Eiji , Wakasa Yuji , Adachi Ryosuke 
Published: March 2022

AbstractIn this paper, we propose a modified Lipschitz optimization (LO) method and apply it to maximum power point tracking (MPPT) control for photovoltaic (PV) systems. The standard LO can find a global maximum of a Lipschitz continuous function over a closed interval in a deterministic way. However, the standard LO tends to evaluate low objective function values, and this feature leads to low MPPT efficiency in its application to MPPT control. The proposed method skips the evaluation of low objective function values (i.e., low power points) by using prior information on the output characteristics of a PV array. Moreover, we show theoretically that the proposed method guarantees convergence to a global optimal solution. We compare the proposed method with some of well‐known MPPT methods and verify its effectiveness through simulations. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.
Bioelectricity‐coupling patches for repairing impaired myocardium
Authors: Li Yuedan , Qiu Xiaozhong 
Published: March 2022

AbstractCardiac abnormalities, which account for extensive burdens on public health and economy, drive necessary attempts to revolutionize the traditional therapeutic system. Advances in cardiac tissue engineering have expanded a highly efficacious platform to address cardiovascular events, especially cardiac infarction. Current efforts to overcome biocompatible limitations highlight the constructs of a conductive cardiac patch to accelerate the industrial and clinical landscape that is amenable for patient‐accurate therapy, regenerative medicine, disease modeling, and drug delivery. With the notion that cardiac tissue synchronically contracts triggered by electrical pulses, the cardiac patches based on conductive materials are developed and treated on the dysfunctional heart. In this review, we systematically summarize distinct conductive materials serving as the most promising alternatives (conductive nanomaterials, conductive polymers, piezoelectric polymers, and ionic electrolytes) to achieve electric signal transmission and engineered cardiac tissues. Existing applications are discussed considering how these patches containing conductive candidates are fabricated into diverse forms with major strategies. Ultimately, we try to define a new concept as a bioelectricity‐coupling patch that provides a favorable cardiac micro‐environment for cardiac functional activities. Underlying challenges and prospects are presented regarding industrial processing and cardiovascular treatment of conductive patch progress.This article is categorized under:
Therapeutic Approaches and Drug Discovery > Nanomedicine for Cardiovascular Disease
Effect of inclined magnetic field on flow of Williamson nanofluid over an exponentially stretching surface in Darcy‐Forchheimer model
Authors: Sharma Diksha , Sood Shilpa 
Published: March 2022

AbstractThe present study elaborates magnetohydrodynamics (MHD) boundary layer flow with heat and mass transfer of pseudo‐plastic nanofluid over an exponentially stretching sheet embedded in a porous medium. Also, the effects of Brownian motion and thermophoresis on heat transfer and nanoparticle concentration are taken into account. With the help of suitable similarity transformations, the governing partial differential equations (PDEs) are transformed into a system of ordinary differential equations (ODEs). An inbuilt solver of MATLAB is being used to solve the system of mathematical equations. The effects of dimensionless parameters on the flow, heat transfer and nanoparticle concentration have been investigated. Graphs have been plotted and discussed to analyze the effects of various dimensionless parameters on velocity, temperature and concentration. As per the results, fluid velocity diminishes as the values of the aligned angle elongate, although temperature and concentration profiles reflect a switch pattern. Furthermore, as the values of Brownian motion, thermophoresis parameter and Lewis number rise, the temperature and concentration profiles rise as well. However, the concentration profiles for Brownian motion and Lewis number shows the reverse tendency.
Transformative Literacy as the Ability to Look Forward from Within
Authors: Dewandre Nicole 
Published: March 2022

AbstractAcquiring transformative literacies calls for a critical review of our underlying conceptual assumptions, in order to bring new light to old words, such as human, equality, freedom and power. Indeed, the transition towards sustainability requires leaving behind the modern paradigm, and embracing a conceptual framework proposed by Hannah Arendt, notably in the Human Condition. With her reconceptualisation of humanness, focused on relationality instead of rationality, she creates the conditions for cherishing and honouring interdependence, from each other, from artefacts and from nature. With this renewed understanding of what it means to be human and how it entails to rely on nature, Arendt offers a new framework that dissolves misleading beliefs and activates alternative ways to look and engage with reality in a meaningful way. And so she does, by keeping fear and rage away, but instead mobilising trust and …love of the world, as difficult it may be.
The Systems Aliveness Approach—Shifting Mindsets from Navigating Emergency to Stewarding Wellbeing on a Healthy Planet
Authors: Kuenkel Petra 
Published: March 2022

AbstractThis chapter suggests that humankind needs to reconsider its relationship with the planet’s amazing miracle:Life. Shifts in mindsets need to reflect this emerging new view of reality. COVID-19 as a global pandemic has alerted many people not only to the need to realign humankind’s relationship with nature, but also highlighted the global interconnectedness and the vulnerability of people. The increasing concern for the future of humanity and our life-support system needs reflections about the underlying view of reality that informs approaches to transformations. If humanity wants to rise up to collective stewardship towards stabilizing the trajectories of our planet, transformation actors need to become humble partners of life’s potential to renew and replenish. The chapter introduces the concept ofsystems alivenessas a guiding compass for transformative change. It emphasizes that understanding what gives life to systems needs to be at the centre of emerging transformation literacy. Drawing from multiple, interdisciplinary sources of the systems aliveness approach offers an avenue to reorientate transformation efforts around six generic principles. Using these principles as a lens to designing transformation initiatives and translating them into a stewardship architecture provides creative pathways for the long journey to regenerative civilizations.
Quantum mechanism of extremely high energy processes at neutron star collapse and of quasar luminosity
Authors: Jacak Janusz Edward 
Published: March 2022

AbstractUsing the braid group topological approach to quantum statistics we demonstrate that for strong gravitational field occurring in neutron star merger with mass exceeding the Tolman, Oppenheimer and Volkoff limit the quantum statistics of particles beneath the photon sphere decays, which results in an instant relief of quantum degeneracy pressure in the star. This causes a rapid shrink of the matter to a black hole with quite different quantum collective character of particles. The scheme of neutron Fermi sphere collapse is proposed as the possible isotropic source of short giant gamma-ray bursts. The similar quantum mechanism of collapse of Fermi spheres of electrons and protons in plasma of accretion disc in vicinity of the Schwarzschild horizon of galactic black hole is able to elucidate the giant luminosity of remote quasars. The efficiency of the mass to energy conversion via collapse of the Fermi sphere is ca. 30 %, not reachable for any other known physical process except of the matter-antimatter annihilation.
Searches for new physics at SND@LHC
Authors: Boyarsky Alexey , Mikulenko Oleksii , Ovchynnikov Maksym , Shchutska Lesya 
Published: March 2022

Abstract
SND@LHC is an approved experiment equipped to detect scatterings of neutrinos produced in the far-forward direction at the LHC, and aimed to measure their properties. In addition, the detector has a potential to search for new feebly interacting particles (FIPs) that may be produced in proton-proton collisions. In this paper, we discuss signatures of new physics at SND@LHC for two classes of particles: stable FIPs that may be detected via their scattering, and unstable FIPs that decay inside the detector. We estimate the sensitivity of SND@LHC to probe scatterings of leptophobic dark matter and decays of neutrino, scalar, and vector portal particles. Finally, we also compare and qualitatively analyze the potential of SND@LHC and FASER/FASERν experiments for these searches.
Brane/flux annihilation in double-throat system
Authors: Seo Min-Seok 
Published: March 2022

AbstractWe study the brane/flux annihilation in the double-throat system in which the corresponding cycles of two throats are homologically equivalent. When we put$$ \overline{\mathrm{D}3} $$D3¯-branes at only one of throat tips, two throats are no longer identical. Then the brane/flux annihilation can be interpreted as the process for reducing the difference between two throat geometries through the transition to the supersymmetric vacuum. To see this, we describe the changes in the amounts of the NSNS 3-form flux supporting the B-cycle contained in two throat regions during the brane/flux annihilation. We also compare our analysis with the recently proposed thraxion scenario, which also describes the inequivalence of two throats caused by the different NSNS 3-form flux distributions in two throat regions.
Leptonic CP violation from a vector-like lepton
Authors: Cherchiglia A. L. , De Conto G. , Nishi C. C. 
Published: March 2022

AbstractLeptonic CP violation is yet to be confirmed as an additional source of CP violation in fundamental interactions. We study the case where leptonic CP violation is spontaneous and is induced by the mixing with a heavy charged vector-like lepton (VLL). We show that the non-decoupling of this VLL is linked with the presence of CP violation and its coupling with the SM leptons are partly fixed from the SM Yukawas. Due to the large leptonic mixing angles, these couplings are typically of the same order and there is no flavor preference. Strong but not definitive constraints come from charged lepton flavor violating processes because the VLL can decouple from one or two leptonic flavors in very special points of parameter space. These special points are very sensitive to the neutrino Majorana phases.