bluuebunny/crossref_metadata_2025_split huggingface dataset:
Are there opportunities to improve lamb feedlot production efficiency? A cross-sectional survey
Authors: Keogh T. P. , McGrath S. R. , Oddy V. H. , Hernandez-Jover M. , Dickson H. , Allworth M. B. 
Published: December 2021

Context Feedlotting lambs has the potential to considerably increase the efficiency of lamb production in Australia. Many producers have turned to grain-finishing lambs to capitalise on high lamb prices and, due to the perceived profitability of this practice, further research to improve production has not been prioritised. Lambs are, however, difficult to adapt to a predominantly grain-based diet, often resulting in highly variable feed intake and growth rates. Aims The aim of this survey was to investigate the apparent growth rates and feed conversion ratios of lambs in current feedlotting enterprises. A secondary aim was to identify research priorities that could improve feedlot production efficiency. Methods A cross-sectional survey was conducted between February and May 2020 among Australian lamb producers, with the target population being lamb producers using feedlots to finish lambs. Producer responses from 59 current lamb feedlotters were collated and analysed. Key results The most frequently reported growth rates were between 300 and 350 g/day, and most respondents reported a feed conversion ratio of 5:1. The incidence of shy feeders was a median of 3.5% and mortality was a median of 1%, with acidosis reported as the major contributor to mortality. Conclusions The results of the current survey indicate that for the majority of responding producers, lamb growth rates and feed conversion ratios are consistent with those predicted by the nutrient requirements of domesticated ruminants (CSIRO 2007), and improvements in production are unlikely without significantly increasing nutrient intake. Shy feeders, acidosis and the intake of lowly digestible feeds are the clear limitations to production efficiency. Implications Research to improve productivity of lambs in feedlots needs to prioritise the implementation of feeding strategies that minimise social and nutritional issues, and promote maximum intake of nutrients.
Palimpsests of plague
Authors: Inglis David 
Published: December 2021

Abstract
This paper examines aspects of how language, translations, narratives, and plagues have been in interplay in the
past, with a view to setting out some possible lessons for today. It looks at two types of practices. First, when people make
plague-related translations of texts with religious or medical content from one language to another, producing and reproducing
texts that enjoy certain forms of persisting authority in guiding thought and practice related to handling and making sense of
major disease outbreaks. Second, when people turn plague phenomena into narratives with story arcs, narratives which can endure
over time and shape subsequent understandings of later outbreaks. Despite more complexity and multiplicity in social
configurations and communications today, many of the phenomena concerning translation and narration that have happened in plague
scenarios of the past have again played out during the Covid-19 pandemic, albeit with distinctive modern colourings.
An Interpretation of the Genetic Polymorphism and Population Genetic Background of Ankang Han Population via a Novel InDel Panel
Authors: Cui Wei , Jin Xiaoye , Fang Yating , Lan Qiong , Lan Jiangwei , Chen Man , Mei Shuyan , Xie Tong , Zhu Bofeng 
Published: December 2021

AbstractIn this research, genotyping data of 43 InDel loci in 311 Han individuals in Ankang City, Shaanxi Province, China were detected using a self-developed five-dye multiplex amplification panel. The allelic frequencies and forensic parameters of all InDel loci were calculated. The combined power of discrimination and probability of exclusion values were 0.999 999 999 999 999 998 827 39 and 0.999 887 424, respectively, which demonstrated that this 43-InDel panel was powerful for individual identifications in Ankang Han population. Moreover, genetic distances, pairwise FST values, principal component analyses, phylogenetic trees and STRUCTURE analyses were performed to investigate the genetic affinities between Ankang Han and reference groups. Population genetic investigations indicated that Ankang Han population had a close genetic relationship with Southern Han population compared with other reference groups.
Design and Analysis of Road Load Detection Machine Based on Computer Technology
Authors: Li Shuo , Zhao Yan , Lin Weiguo , Su Ming 
Published: December 2021

Abstract
In this paper, an experimental device is designed for measuring vehicle dynamic load, the structure and stress of the equipment are analyzed by computer technology. The device design mainly includes vehicle, road surface, vehicle transmission, and control [1]. The vehicle is designed based on a 2-DOF vehicle model, the road is designed based on the Pasternak foundation model, and the control mainly uses a single-chip microcomputer. The dynamic response of vehicles to the road at different speeds is analyzed through the experiment [2].
Mobile Robot Computer Simulation System
Authors: Ma Dayong , Xu Xin , Wang Huqun , Li Anzhuo 
Published: December 2021

Abstract
The constant development of science and technology, mobile simulation robot become one of the people of tea after a meal, want the simulation robot to human operation level, premise condition clearly understand the principle of the simulation robot, and the mobile robot simulation system the required functionality, and after understanding we should how to realize the function of them. In this paper, the principle, function and realization of the mobile robot simulation system are designed.
MATLAB Simulation of Current-Carrying Friction between Catenary and Bow Net Of High-Speed Train under Fluctuating Load
Authors: Wang Ruyu , Zhang Zhiguo 
Published: December 2021

Abstract
The current carrying capacity of pantograph-catenary will also change dynamically with the continuous change of train speed. The influence of internal and external parameters such as running speed, current, pressure and vibration must be fully considered. Based on this, this paper first analyses the action relationship between CRH pantograph-catenary under fluctuating load, then studies the measurement of current carrying friction between CRH pantograph-catenary under fluctuating load, and finally gives the MATLAB simulation of current carrying friction between pantograph-catenary under fluctuating load.
Artificial Intelligence Technology in Electric Automation Monitoring System of Power Plant
Authors: Yan Tao 
Published: December 2021

Abstract
With the development of large-capacity and high-parameter units, the degree of electrical automation in power plants is becoming more and more important. Due to the relatively backward technology of traditional electrical monitoring, it is more human monitoring, and the level of automation is low. Nowadays, communication network technology has been rapidly developed, and machinery and equipment have become more intelligent. These have laid a good technical foundation for the reform and innovation of electrical automation monitoring systems in power plants. This article first studies the development status of the electrical automation monitoring system, and then uses the fieldbus and Ethernet technology to carry out the configuration mode and construction of the electrical automation system. Then, this article designs the basic functions, advanced application functions and software parts of the system. Finally, this paper tests the running time and update function of the system dynamic module. The test result shows that the running time of the dynamic module meets the requirements of the system, and the update function is relatively fast.
Electric Power Material Logistics Distribution Based on Improved Multi-Population Particle Swarms
Authors: Wang Jie 
Published: December 2021

Abstract
In view of the problem that the information requirements of electric power supplies logistics distribution are increasingly high, this study proposes the research of electric power supplies logistics distribution based on improved multi-population particle swarm. Firstly, the simulated annealing algorithm is introduced in detail, and then the particle swarm optimization (PSO) is improved by using the domain extension method. Then the multi-population particle swarm optimization was carried out through the optimization of coding system, the updating speed formula and the algorithm convergence control. Finally, the optimization effect was verified. Final results show that, this study put forward based on improved particle swarm more population of electricity supplies logistics distribution model has feasibility and suitability, through the optimized parameters and algorithm of the model, to identify the logistics network of electric power supply company the best optimization model, thus reducing power cost of inventory and logistics distribution time, so as to improve the efficiency of logistics distribution.
Logistics Engineering Simulation Using Computer 3D Modeling Technology
Authors: Liu Dalong , Pan Yanfang , Li Liwei 
Published: December 2021

Abstract
3D modeling technology is an important branch of interdisciplinary fields such as computer graphics, intelligent information processing, computer vision, and artificial intelligence. Through computer digitization, collecting three-dimensional data information of the target object, and then processing and simulation reproduction through computer technology, plays an important role in logistics engineering (LE). The purpose of this paper is the simulation research of LE based on computer three-dimensional modeling technology. This paper takes LE as the research object, firstly elaborates the functional and non-functional requirements of the system separately, and establishes an intelligent logistics system. This paper uses Flexsim simulation software to establish a logistics distribution simulation model. Based on the data collected in the survey, the model is parameterized. Through the data output from the simulation, the simulation data of the original logistics system and the logistics system designed in this paper are compared and analyzed. The simulation output data shows that the total number of products transported in and out of the warehouse of the original system’s 6 transport planes is 15,559, and the total number of products transported in and out of the warehouse of the 6 transport planes in the logistics system proposed in this paper is 17,144 pieces. It can be seen that this system has strong transportation efficiency in LE.
Application of Computer Aided 3D CAD Technology in Mechanical Manufacturing and Automation
Authors: Liu Shufeng 
Published: December 2021

Abstract
With the development of computer-aided technology, the application of computer-aided 3D CAD technology in mechanical manufacturing has become more and more extensive. And it has brought new breakthroughs to the machinery manufacturing industry. This article analyzes the characteristics and functions of 3D CAD technology and its application in mechanical manufacturing design, and it also analyzes the characteristics of mechanical automation control systems. In addition, this article also conducts research on the design of mechanical automation control system.
Mechanical Optimization Design and Automation Application Based on Machine Vision Technology
Authors: Song Yu , Lu Jingui 
Published: December 2021

Abstract
The application of related tech represented by machine vision in mechanical design has gradually deepened, which has greatly ameliorated the automation of mechanical design. Based on this, this paper first analyses the principle and important composition of machine vision tech, then studies the utilization value of machine vision tech in mechanical design, and finally analyses the typical practical utilization of machine vision tech in workpiece detection, workpiece measurement and high-precision measurement in mechanical design.
Frequency Modulation Method and System of Photovoltaic Virtual Synchronous Generator Based on Computer Technology
Authors: Zhang Jiangfeng , Su Ye , Zheng Keke , Hua Liyun 
Published: December 2021

Abstract
With people’s attention to environmental protection, clean energy has become an important research and development direction. Among them, photovoltaic power generation has many advantages, such as simple process, no fuel consumption, no noise, no pollution and so on. The power grid capacity is becoming larger and larger, and has a great impact on the environment. Therefore, the grid connection of photovoltaic power generation will cause major problems for the planning, operation and dispatching of power grid. Virtual synchronous generator (hereinafter referred to as VSG) technology can simulate the inertia, primary frequency regulation and voltage regulation characteristics of synchronous generator, which has become an important way to improve the dynamic frequency response ability of the system. Therefore, VSG technology has become an important research technology of photovoltaic grid connected system, among which FM method will also become an important research direction. Firstly, this paper analyzes the VSG algorithm and its basic characteristics. Finally, this paper analyzes the control scheme of overall primary frequency regulation of photovoltaic power station (hereinafter referred to as PPS).
Intelligent Building Design Based on Internet of Things
Authors: Wu Jiaojiao 
Published: December 2021

Abstract
As an important part of today’s intelligent building engineering, the construction quality of the Internet of Things system automation system largely determines the reliability, security and operation order of the engineering construction. When building the Internet of Things system, the construction personnel must strictly follow the rules and regulations and design scheme, and also strengthen the control and management of field work design, construction material quality, project processes and procedures. Based on the above requirements, combined with the current status of the project, this paper studies and discusses the improvement measures of the construction of intelligent building networking system, hoping to provide reference for the industry [1].
Allocation Control of Multi-functional Grid Connected Inverter and the Power Quality between of Grid Connected Microgrid Based on PSCAD Simulation Platform
Authors: Cheng Yin , Cao Gang , Liu Yaohong , Zhou Yi 
Published: December 2021

Abstract
On the one hand, the application of microgrid can effectively cut down the effect of distributed generation on distribution network, on the other hand, it helps to improve the power quality of distribution network. However, for the distribution network, a single multi-functional inverter has limited effect on the improvement of its power quality. Therefore, the allocation control of power quality by decentralized multi-functional inverters can further improve the utilization of inverters. This paper proposes to calculate the output current of multiple multi-functional inverters according to the harmonic and reactive current of the parallel node and the residual capacity of the multi-functional inverter. The simulation results show that the allocation control strategy proposed in this paper can effectively control the compensation capacity of the multi-functional inverter, so as to control the harmonic at the grid connection in place.
Operation Platform of Charging Pile Metering Equipment Based on Big Data
Authors: Liu Wei , Wang Chaoliang , Zhang Yang , Xiao Tao , Lu Chunguang 
Published: December 2021

Abstract
At present, our country’s new energy industry has developed rapidly with the concept of green development, and at the same time, the demand for charging piles and other equipment is also increasing. However, many new energy vehicles need to pay corresponding fees when using charging piles, resulting in bloated data in the original metering system. Based on this, the purpose of this article is to design and research the operation platform of charging pile metering equipment based on big data. This article first analyzes and studies the current status of charging pile metering, and studies its existing problems and shortcomings in combination with big data technology. The feasibility of the system development and the module functions of the charging pile metering equipment operating platform are studied. This article systematically expounds the three basic algorithms of DC electric energy measurement, and uses comparative analysis method, interdisciplinary method and other research forms to study the content of this article. Experimental research shows that the accuracy of the charging pile metering equipment based on big data studied in this paper is within 0.1, which is extremely feasible.
The control of the height and shape of the track in laser metal deposition by the QCW laser mode
Authors: Rodin P S , Dubrov V D 
Published: December 2021

Abstract
The control of the track shape in laser metal deposition technology by the QCW laser mode has been studied. The different geometric characteristics of the tracks are shown to obtain at the same average laser power, depending on the selected laser power control mode. The difference in the temperature regimes of track formation is shown.
Obtaining and plasma-electrolyte modification of fibers of ultralight magnesium alloy
Authors: Krit B L , Serov M M , Morozova N V , Wu Ruizhi , Medvetskova V M 
Published: December 2021

Abstract
The results of researches for the transformation to fiber state the Mg-8Li-1Al-0.6Ce-0.3Y ultralight magnesium alloy by the Pendant Drop Melt Extraction (PDME), and subsequent modifying obtained fibers by Plasma-Electrolytic Treatment (PET) are presented. The results demonstrate possibility of successful application of the above-mentioned methods in relation to chemically active materials. Purposeful modifying of ultralight magnesium alloys by PDME and PET methods is capable to significantly expand areas of using to these materials.
Rheological properties of powder blend for extrusion of ceramic-polymer filament used in 3D printing
Authors: Smirnov A , Kuznetsova E V , Babushkin N N , Pristinskiy Y O , Solis Pinargote N W 
Published: December 2021

Abstract
The article presents the results of comparative studies of the rheological properties of the ceramic polymer blend of polylactide (PLA) filled with 50 %vol alumina to evaluate the possibility of obtaining extruded filament for 3D printing.
Effect of nanocoating morphology on the signal of X-ray Photoelectron Spectroscopy
Authors: Afanas’ev V P , Lobanova L G , Selyakov D N , Semenov-Shefov M A 
Published: December 2021

Abstract
The paper considers the application of the traditional X-ray photoelectron spectroscopy (XPS) methodology: the Overlayer Thickness Determination for the analysis of coating parameters. In particular situations considered in this work, it is energetically favorable for the atoms of the coating to form clusters, but not be evenly distributed on the surface of the substrate material. The change in the XPS signal is analyzed in situations when the coating is not a plane-parallel homogeneous layer, but an island (cluster) structure. The mathematical model of the XPS signal formation is considered for the case of the cluster covering in the form of parallelepipeds. Photoelectron path distributions (in the coating material) analysis indicated a strong dependence of the signal on the viewing angle. For the purpose of analysis, experimental spectra were obtained for several samples: gold depositions of various thicknesses on a silicon substrate. The spectra were measured for different viewing angles of photoelectrons and interpreted within the Straight Line Approximation (SLA). It is shown that proposed simplest model of an island coating allows to describe the effect of a decrease in the value of the effective average coating thickness, determined in plane-parallel geometry, with an increase in the viewing angle, observed in XPS experiments with angular resolution.
Residual stresses in surface layers and coatings
Authors: Ashmarin A A , Lozovan A A , Betsofen S Ya , Moiseyev V S , Kubatina E P , Lebedev M A 
Published: December 2021

Abstract
Methods of measurement and mechanisms of formation of residual stresses in the surface layers of metal alloys after ion nitriding, as well as in heat-shielding and refractory coatings are considered. Examples of the application of a technique based on the peculiarities of elastic anisotropy for measuring residual stresses in heterogeneous surface layers, for which the standard technique of diffraction tensometry “sin2Ψ” is not applicable, are given.
Regularities and features of acoustic emission under plasma electrolytic oxidation of wrought Al-Mg alloy
Authors: Rastegaev I A , Polunin A V 
Published: December 2021

Abstract
The paper highlights the characteristic features of acoustic emission (AE) in the process of plasma electrolytic oxidation (PEO) of aluminum alloy, and also reveals the correlation of 4 main stages of PEO process with AE signals. The fundamental possibility to establish and detail the features of oxidation stages and to compare different PEO modes by AE signals was demonstrated. The results obtained substantiate the high potential of AE method as an instrument of in situ research, production monitoring and control, and evaluation of quality of PEO process on aluminum alloys.
Mechanical properties and fatigue of extruded D16 alloy profiles of the Al-Cu-Mg system after ion irradiation
Authors: Gushchina N V , Ovchinnikov V V , Shalomov K V , Vichuzhanin D I 
Published: December 2021

Abstract
The effect of 20-keV Ar+ ion irradiation on the mechanical properties andfatigue resistance of 6 mm thick hot-extruded profiles made of a D16 alloy (Al–Cu–Mg system) has been studied after natural aging. Irradiation at fluences of 2.1015 cm−2 and 1.1016 cm−2 has been revealed to increase the number of cycles to failure significantly at low load amplitudes σ/σu = 0.3. The maximum increase in the number of cycles to destruction 2.4 times is observed at a smaller fluence of ions F = 2.1015 cm−2.
Variation and adaptation of leaf water content among species, communities, and biomes
Authors: Wang Ruomeng , He Nianpeng , Li Shenggong , Xu Li , Li Mingxu 
Published: December 2021

Abstract
Leaf water content (LWC) is essential for the physiological activities in plants, but its spatial variation and the underlying mechanisms in natural plant communities are unclear. In this study, we measured the LWC of 5641 plant species from 72 natural communities in China, covering most terrestrial ecosystems, to answer these questions. Our results showed that LWC, on average, was 0.690 g g–1, and was significantly higher in forests and deserts than in grasslands. LWC was significantly different among different plant life forms, and ranked on averages in the following order: herbs > shrubs > trees. Interestingly, LWC decreased with increasing humidity and increased in dry environments. Furthermore, the variations of LWC in plant communities were higher in arid areas and those species with lower LWC in a plant community were more sensitive to changing environments. These results demonstrated the adaptations of plants to water regime in their habitats. Although, phylogeny has no significant effect on LWC, plant species both in forests and grasslands evolve toward higher LWC. Variations of LWC from species to community to biome represent the cost-effective strategy of plants, where plant species in drier environment require higher input to keep higher LWC to balance water availability and heat regulation. This systematic investigation fills the gaps on how LWC varies spatially and clarifies the different adaptation mechanisms regulating LWC across scales.