bluuebunny/crossref_metadata_2025_split huggingface dataset:
On the value of adding commercial data into the reference population of the Angus SteerSELECT genomic tool
Authors: Reverter Antonio , Porto-Neto Laercio , Hine Brad C. , Alexandre Pamela A. , Samaraweera Malshani , Byrne Andrew I. , Ingham Aaron B. , Duff Christian J. 
Published: March 2023

Context Angus SteerSELECT is a genomic tool designed to provide genomic estimated breeding values (GEBV) for nine traits related to growth, feedlot performance, carcase characteristics and immune competence. At present, GEBV for carcase characteristics are based on a reference population of 3766 Australian Angus steers. Aims We aimed to investigate the potential benefit of incorporating commercial data into the existing reference population of the Angus SteerSELECT. To this aim, we employ a population of 2124 genotyped commercial Angus steers with carcase performance data from four commercial feedlot operators. Methods The benefit of incorporating the commercial data (COMM) into the reference (REFE) population was assessed in terms of quality and integrity of the COMM data and meta-data to model the phenotypes adequately. We computed bias, dispersion, and accuracy of GEBV for carcase weight (CWT) and marbling (MARB) before and after including the COMM data, in whole or in partial, into the REFE population. Key results The genomic estimate of the Angus content in the COMM population averaged 96.9% and ranged from 32.87% to 100%. For CWT, the estimates of heritability were 0.419 ± 0.026 and 0.368 ± 0.038 for the REFE and COMM populations respectively, and with a genetic correlation of 0.756 ± 0.068. For MARB, the same three parameter estimates were 0.357 ± 0.027, 0.340 ± 0.038 and 0.879 ± 0.073 respectively. The ACC of CWT GEBV increased significantly (P < 0.0001) from 0.475 when the COMM population was not part of the REFE to 0.546 (or 15%) when a random 50% of the COMM population was included in the REFE. Similarly significant increases in ACC were observed for MARB GEBV (0.470–0.521 or 11%). Conclusions The strong genomic relationship between the REFE and the COMM populations, coupled with the significant increases in GEBV accuracies, demonstrated the potential benefits of including the COMM population into the reference population of a future improved version of the Angus SteerSELECT genomic tool. Implications Commercial feedlot operators finishing animals with a strong Angus breed component will benefit from having their data represented in the reference population of the Angus SteerSELECT genomic tool.
Using digital photography to monitor changes in biocrusts and ground cover in a savanna rangeland
Authors: Than Myint Swe  , Williams Wendy J. , Schmidt Susanne , Potgieter Andries , Cowley Robyn , Mellor Vincent , Driscoll Colin , Zhao Yan 
Published: March 2023

Biocrusts form a living soil cover in Australia’s northern savannas, delivering essential ecosystem services. More accessible tools are needed to quantify and monitor ground cover, including biocrusts, as current methodologies are time-consuming, expensive, or specialised. At Victoria River Research Station (Northern Territory, Australia), long-term fire research plots were used to monitor the response of low vegetative ground and soil covers for different burning intervals and seasons. Mobile phone photographs were analysed using machine-learning software and a derived decision tree-based segmentation model (DTSM). The resulting data were compared to visual in-field assessment by trained researchers. Visual assessments and photographs were taken at two time points during the post-fire recovery period, mid-wet and dry seasons, at three burning intervals (2, 4, and 6 years) and for two different burning times, early or late dry season. DTSM-derived grass and litter cover were statistically similar to field observations in the burnt and unburnt plots. Biocrust cover derived from DTSM also matched field observations in fire treatments and unburnt control plots in the dry season, except when obscured by grass or litter. In the wet season, DTSM underestimated biocrust cover in some treatments, and DTSM did not detect biocrust obscured under dense grass cover. Nevertheless, biocrust pigment analysis confirmed a significant presence of biocrusts both on seemingly bare soil and under the grass canopy. We concluded that mobile phone photographs are suitable for monitoring dry-season ground cover. When similar colours of grass and litter cover were combined, the modelled accuracy reached 95–97%. With some refinements, DTSM analysis of photographs could accurately quantify the impact of fire disturbance on biocrusts and grass cover. However, it would be advantageous to improve the model by additional field records to determine how much biocrust occurs under the grass. This study provides land managers with an efficient method of recording ground cover over time to aid land-condition assessments.
Changes in land management practices have reduced wind erosion in the cropping areas of far south-western NSW, Australia
Authors: Leys John F. , Shields Tanisha , Murphy Sean R. , Koen Terry 
Published: March 2023

Since the mid-1970s, approximately 250 000 ha of rangelands in semi-arid far south-western NSW, Australia, have been converted to cropping land use, resulting in substantial wind erosion. Wind erosion is of concern because of its adverse impacts on soils, agricultural production, aviation, energy supply, human health and ecosystem function. Over recent decades, multi-faceted extension programs have promoted sustainable land management practices to reduce wind erosion. Repeated biannual paddock surveys were undertaken between 2003 and 2022 to determine (1) the best land management practices (BMPs), that is, those that would reduce erosion while maintaining productivity and profitability, and (2) whether the use of the BMPs changed over time. The BMPs that reduce wind erosion included chemical fallow, standing stubble, and perennial pastures. Between 2003 and 2022, the proportion of sites with BMPs increased from 14% to 75%, and the proportion of sites with wind erosion fell from 23% to 9%. Practices that reduced ground cover and led to frequent erosion have declined, including tilled pasture, tilled stubble and grazed stubble. In drier years, livestock grazing crop stubble exacerbated the erosion hazard. In an attempt to understand where landholders obtain their information for land management practice change, the Western Local Land Services (LLS) conducted a social benchmarking survey in 2020 that indicated that the LLS was the third source of information for practice change after neighbours and other landholders, and stock and station agents. Although the LLS is a source of information, this study could not determine a causal link between LLS programs and practice change. Further research is required to test whether extension programs can reduce the overgrazing of stubble.
The codification of nineteenth-century etiquette
Authors: Paternoster Annick 
Published: March 2023

AbstractEtiquette has only marginally attracted the attention of politeness scholars. This article aims to fill a knowledge gap as it explores the concept in a more systematic way, using nineteenth-century prescriptive metasources from four countries (Britain, France, Italy and the United States). Etiquette is found to form a complicated, all-encompassing body of tendentially amoral, mandatory norms, adapting the minutiae of court protocol to private settings. Since the conventions of etiquette are sequentially structured as scripts with a social gatekeeping function, they can be seen as rituals – that is, schematic, performative interaction that is emotionally invested. Furthermore, given the combination of mandatory behaviour and a concern for rank (precedence), etiquette is seen as a manifestation of Discernment, although etiquette privileges non-verbal aspects of interaction, with less attention for language advice. I consider “etiquette” to be a historically and geographically situated first-order term for the analytical concept of Discernment: emerging in Europe and in North America in the late eighteenth century, it is still in use today.
In-situ integration and performance verification of large-scale PZT network for composite aerospace structure
Authors: Ren Yuanqiang , Zhang Suofeng , Yuan Shenfang , Qiu Lei 
Published: March 2023

Abstract
Piezoelectric transducer (PZT) based structural health monitoring (SHM) technology has been proved to be effective in increasing safety and reliability of composite aircraft structures. However, the attachment of PZT network to the host structure is considered as a weak link when facing the long term durability requirement of aerospace SHM, which should be overcome for aerospace SHM. In this paper, a surface-mounted co-curing method is creatively proposed to realize in-situ integration of large-scale PZT network and composite structure. By jointly controlling curing temperature and pressure, the proposed method can realize integration of large-scale PZT network and structural surface with high reliability and performance consistency. Compared with the conventional integration methods, the proposed method does not affect the manufacturing process or reduce the mechanical property of structure, and can be easily implemented whenever the host structure is available. To evaluate the effectiveness of the proposed integration method, a large-scale PZT network with an overall dimension of 1100 mm × 600 mm is integrated with a carbon fiber composite panel of wing box. The integration caused influence on functional integrity is first assessed by performing electro-mechanical impedance based theoretical analysis and experimental investigation. Then guided wave signals of the integrated large-scale PZT network are also acquired and analyzed, which proves the good signal repeatability and consistency of the network. At last, the SHM performance of the network is verified by conducting impact damages on the composite panel and performing damage monitoring, experimental results show that accurate monitoring is realized.
The trap in the early Universe: impact on the interplay between gravitational waves and LHC physics in the 2HDM
Authors: Biekötter Thomas , Heinemeyer Sven , No José Miguel , Olea-Romacho María Olalla , Weiglein Georg 
Published: March 2023

Abstract
We analyze the thermal history of the 2HDM and determine the parameter regions featuring a
first-order electroweak phase transition (FOEWPT) and also much less studied phenomena like
high-temperature electroweak (EW) symmetry non-restoration and the possibility of vacuum trapping
(i.e. the Universe remains trapped in an EW-symmetric vacuum throughout the cosmological
evolution, despite at T = 0 the EW breaking vacuum is deeper). We show that the presence of
vacuum trapping impedes a first-order EW phase transition in 2HDM parameter-space regions
previously considered suitable for the realization of electroweak baryogenesis. Focusing then on
the regions that do feature such a first-order transition, we show that the 2HDM parameter space
that would yield a stochastic gravitational wave signal potentially detectable by the future LISA
observatory is very contrived, and will be well probed by direct searches of 2HDM Higgs bosons at
the HL-LHC, and (possibly) also via measurements of the self-coupling of the Higgs boson at
125 GeV. This has an important impact on the interplay between LISA and the LHC regarding the
exploration of first-order phase transition scenarios in the 2HDM: the absence of new physics
indications at the HL-LHC would severely limit the prospects of a detection by LISA. Finally, we
demonstrate that as a consequence of the predicted enhancement of the self-coupling of the Higgs
boson at 125 GeV the ILC would be able to probe the majority of the 2HDM parameter space yielding
a FOEWPT through measurements of the self-coupling, with a large improvement in precision with
respect to the HL-LHC.
Rational wavefunctions in de Sitter spacetime
Authors: Goodhew Harry 
Published: March 2023

Abstract
The Bootstrap approach to calculating cosmological correlators relies on a well motivated
ansatz. It is typical in the literature to assume that correlators are rational functions as this
greatly increases our constraining power. However, this has only previously been demonstrated for
some specific theories. In this paper we find a set of assumptions which we prove are sufficient
to ensure that the wavefunction coefficients are rational. As a corollary of this we generalise
the manifestly local test to higher dimensions. This result greatly reduces the allowed space of
functions that wavefunction coefficients can take in both the Effective Field Theory of Inflation
and Pure Gravity models and is thus a key ingredient in the Cosmological Bootstrap program.
Research on Power Storage Optimization Operation Strategy for Wind-Photovoltaic Power Coupled Hydrogen Production
Authors: Tao Yongjin , Zhou Hengjun , Wu Gang , Xu Lijun , Gao Lang 
Published: March 2023

Abstract
Under the guidance of the “double carbon” development goal, new production and marketing methods of green energy, such as wind-photovoltaic coupling hydrogen production, are developing rapidly. Due to the lack of engineering experience, there is still a lack of corresponding strategies for capacity allocation and operation control of renewable energy coupled hydrogen production. Moreover, due to the strong volatility of landscape resources and the flexible adjustment ability of hydrogen production load, the accumulation of uncertainties at both source and charge will further affect the stability of system operation. Therefore, this paper first focuses on the scenario of a microgrid with wind-photovoltaic coupled hydrogen production, comprehensively considers the uncertainty factors of green hydrogen production, and takes economic optimization as the goal to construct an operation optimization typing model of microgrid based on energy storage. Secondly, the microgrid makes full use of the flexible characteristics of energy storage to balance the power supply and demand in the microgrid and to reduce the impact of the fluctuations of the distributed energy system on the grid. Then through the demonstration and analysis of specific examples, the configuration and operation strategy of the system power storage under the differential influence factors are obtained.
Research on Grid Connection Test of Energy Storage System Based on RT-LAB
Authors: Yang Shaobo , Hu Xuekai , Meng Zhengji , Peng Yan , Le Zhu , Wang Lanchao 
Published: March 2023

Abstract
As more and more energy storage systems are applied to support the safe operation of the power grid, it becomes more important to conduct grid connection tests. According to the latest national standards, the grid connection test scheme is studied on the basis of RT-LAB hardware in the loop simulation. Firstly, the structure of the Energy storage system(ESS) based on the energy storage inverter is analyzed, and the strategy of conduct and mathematical model of the energy storage system are introduced; Secondly, based on RT-LAB , conducted with FPGA, hardware in the loop simulation test platform is built to improve the calculation method in the simulation, improve the accuracy and speed of the simulation; Finally, on the basis of the above, the grid connection performance test scheme is introduced, the test method performance is described in detail on the condition of fault ride through of the energy storage system, and the results are analyzed in depth. The results shows that using RT-LAB hardware in the loop simulation can accurately simulate the grid connection test of the energy storage system and provide a reference for the test plan.
Intelligent Optimal Control Strategy of Heat Pump System Based on Digital Twins
Authors: Zhang Kai , Wu Qingpu , Li Hongyu , Zhang Ran , Li Jianfen , Jiang Fei , Liu Libo 
Published: March 2023

Abstract
In the context of the digital transformation of the power grid, digital twins, as one of the key technologies to promote the digital and intelligent development of the power industry, are still in the theoretical research stage. Focusing on the application of digital twin technology in the power industry, an intelligent optimal control strategy for heat pump system (HPS) based on digital twin technology is proposed. Firstly, the DOE-2 model of HPS and the prediction model of building heat load are established. Secondly, based on the real-time monitoring data, the improved quantum particle swarm optimization algorithm is used for the rolling optimization of model parameters. Finally, the optimal control strategy of the HPS is formulated based on the comprehensive consideration of energy consumption, the number of startups and shutdowns, and the temperature control requirements of the HPS. The example results show that the digital twin model has high accuracy. Compared with the manual control method, the proposed optimal control strategy can effectively improve energy efficiency utilization and has a better control effect, providing technical support for the operation and management of HPS.
Low carbon economic operation of the IES based on improved fireworks algorithm
Authors: Zhu Liangliang , Yu Meng , Li Wenqing , Wang Yingqiu , Li Ye , Zhao Meng 
Published: March 2023

Abstract
In order to reduce the environmental pollution caused by carbon emissions in the integrated energy system (IES), the economic benefits of the IES must be improved. Therefore, this study proposes a an economic and low carbon operation method of an IES based on an improved fireworks algorithm. Firstly, the analytical model of the IES with electrical heat and cooling load demand is constructed. Secondly, the model of optimization of low carbon operation of the IES is developed with the aim of reducing the total cost of the system operation and the cost of carbon trading. Finally, an improved firework algorithm is proposed for the calculation of the model. The simulation results on the IES show that our promised approach can minimize the operating cost of the IES and reduce the carbon emission of the system.
Research on Drag Reduction Flow Control Technology for High-Speed EMUs
Authors: Gao Na , Du Jian 
Published: March 2023

Abstract
In order to explore a new method of aerodynamic drag reduction for high-speed trains, the numerical calculation method based on SST k-ω was used to explore the influence of jets at different positions of the train body, joints, tail and different speeds on the turbulent flow field and aerodynamic drag around the train. The research results show that: the whole train with an all-inclusive windshield reduces the drag by about 8.17%; the bionic groove can reduce the drag by about 2.53%; there is a separate area at the rear of the train, and a partial air-inhalation drag reduction scheme is proposed. By calculation, the maximum drag reduction rate is 3.84%. The drag reduction scheme of the vortex generator is arranged locally. Through the calculation of 30 schemes, the maximum drag reduction rate is 3.25%.
Theoretical Prediction and Experimental Verification of Hitting Targets of Gravity-Powered Trebuchets
Authors: Liu Xiangshu , Chen Qicheng , Zhai Ying , Mo Lintang , Yang Maoli 
Published: March 2023

Abstract
As one of the early weapons used by the ancient Chinese military, the gravity-powered trebuchet is listed as a mandatory program in science and technology games in several provinces. Due to its entertaining and informative features, this program has received continuous attention and discussion from scholars. Currently, most of the studies on this program are empirical, and few studies have been conducted quantitatively based on theoretical models. Therefore, this study established a theoretical model of the trebuchet projection process from the perspective of system energy conservation and gave an accurate analytical expression of hitting target points. In order to verify the reliability of the theoretical model, experimental tests were conducted. The results showed that the experimental results were relatively consistent with the theoretical predictions. These findings could provide a new research idea for facilitating gravity-powered trebuchets to hit targets accurately.
Convexity Estimates for the Solution of the Elliptical Partial Differential Equation det D
2
u = eu
Authors: Yu Xuemei 
Published: March 2023

Abstract
The Monge-Ampère equation det D
2
u = eu
is completely nonlinear and elliptic, the convexity estimates for the solution of the elliptical partial differential equation is very important. We establish a differential inequality by constructing an auxiliary function and give two differential estimates for the solution of the equation det D
2
u = eu
with 0 boundary value condition.
The union of intervals in constructive mathematics
Authors: Liu Chuning , Shen Wenqi 
Published: March 2023

Abstract
Constructive Real Numbers (CRNs) are the concept of real numbers used in Constructive Mathematics, where the objects are thought of as being generated by a computer program. This paper focuses on the property of unions in the constructive end, which means that we study the union of intervals from the viewpoint of Constructive Mathematics. In the end, we prove that for t < u ≤ v < w (t, u, v, w are CRN), then it is always true that [t, v] ∪ [u, w] ⊂ [t, w] but generally it is not true that [t, w] ⊂ [t, v] ∪ [u, w]. However, for t < u < v < w(t, u, v, w are CRN), it is always true that [t, w] = [t, v] ∪ [u, w].
Finite element analysis for residual stress of TB18 billet produced by laser directed energy deposition
Authors: Hu Zhongyuan , Yuan Wuhua 
Published: March 2023

Abstract
In order to study the influence of process parameters on the residual stress of TB18 titanium alloy produced by laser directed energy deposition, a method combining numerical simulation with experimental verification was adopted. The distribution of residual stress in the deposited layer was obtained through experiments, and the influence of process parameters on the residual stress in the deposited layer was analyzed by finite element simulation. Finite element simulation is carried out for different cooling time and scanning strategy between layers. The results show that the residual stress of the deposited layer increases with the increase of the interlayer cooling time. By changing the scanning strategy, the peak residual stress can be reduced by 84.3% at most. This study provides guidance for selecting appropriate process parameters and reducing the residual stress of TB18 titanium alloy produced by laser directional energy deposition.
Simulation of DC glow discharge plasma with free-moving dust particles in the radial direction
Authors: TIAN Ruihuan , LIANG Yonggan , HAO Shuji , FENG Jie , JIANG Xiaonan , LI Hui , YUAN Chengxun , WU Jian 
Published: March 2023

Abstract
A self-consistent fluid model is developed to investigate the radial distributions of dusty plasma parameters in a DC glow discharge, in which the extended fluid approach of plasma particles and the transport equations of dust particles are coupled. The electrical interaction between charged dust particles is considered in the model. The time evolution of radial distributions of dust density, plasma density, the radial component of electric field and the forces acting on dust particles when dust density tends to be stable, are obtained and analyzed under different discharge currents and dust particle radii. It is shown that the dust density structure is determined mainly by the radial electrostatic force, thermophoretic force and ion drag force in the discharge tube, and both discharge current and dust particle radius have an obvious effect on the transport processes of dust particles. The dust particles gather in the central region of the discharge tube for low discharge current and small dust radius, then dust voids are formed and become wider when the discharge current and dust radius increase. The plasma parameters in the dust gathering region are obviously affected by the dust particles due to the charging processes of electrons and ions to the dust surface.