bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of trivalent rare earth doping in cadmium silicates hosts: a theoretical study
Authors: Freire Eduily Benvindo Vaz , Santos Anderson Lira de Sales , Bispo Giordano Frederico da Cunha , Macedo Zélia Soares , Jackson Robert A , Valerio Mário Ernesto Giroldo 
Published: November 2022

Abstract
The objective of the present work is to investigate the possibilities for extrinsic defects in the three cadmium silicate matrices, CdSiO3, Cd2SiO4 and Cd3SiO5 and understand the final geometry of the most energetically favourable defects, which are generators of the luminescence centres in the material. This analysis will be performed out through classical and static computer modelling, using the code GULP. A number different mechanisms were modelled and their related solid state reactions were devised allowing the energetic calculations for the incorporation of trivalent rare Earth ions (R3+) in these matrixes. The results demonstrated that the trivalent rare Earth ions are preferentially incorporated substitutional at Cd sites with cadmium vacancy being created in order to compensate charge unbalance. Careful investigations of the different distances and angles between the ions involved in the defects formation for CdSiO3 found that all investigated R3+ ions have the same lower energetic defect configuration. The lowest energetic costs were found for a configuration where the rare Earth ions and the accompanying vacancy are almost aligned with a distance of around 7 Å and an angle closer to 180°. These results predict a possible set of two dipoles caused by the position of the cadmium vacancy in defect. Cadmium vacancies were expected to be present in the cadmium silicate due to the low vapor pressure of CdO; however, no previous work was able to pre-establish the final geometric structure of the cadmium silicate matrix in the defective region that can modify the luminescent centres in the material. The study of a wide range of possibilities for the insertion of defects and the proposal for the final configuration of these defects is presented, in order to assist in the identification of the sources and the specific chracteristics of the luminescent emissions presented in cadmium silicates doped with R3+.
Rayleigh-Taylor instability of radiation pressure driven foils: 2D effects
Authors: Krishnan Nivedya , Yadav Mamta , Mandal S , Kumar Ashok 
Published: November 2022

Abstract
Rayleigh–Taylor instability of radiation pressure accelerated ultra-thin foils of different thickness profiles and initial curvature is investigated in two dimensions using numerical simulations. The convex curvature of the foil (when viewed from the rear side of the foil) provides radially inward motion to the off-axis ions countering the radial divergence due to the Gaussian intensity distribution of the laser. Nonuniform foils, having maximum thickness on laser axis have similar effect. When a small ripple is superimposed on the foil on the scale of laser wavelength, the radiation pressure acts nonuniformly on the microscopic scale and the perturbation grows as the foil moves. After a certain distance of travel, the foil crests turn into cusps and the phase of quasi mono-energy ion acceleration terminates. The planar foil with uniform laser has a strong growth of Rayleigh–Taylor instability (RTI). The foils with curvature and nonuniform thickness have marginally lower growth rate. However, under all circumstances, RTI is found to induce additional energy spread, in radiation pressure acceleration (RPA) of thin foils.
Quantum tunneling dynamics with robust reciprocity of Bose-Einstein condensate in a quadruple-well potential with synthetic gauge fields
Authors: Wang Lin , Xiao Ke-Wen , Wang Wen-Yuan , Dou Fu-Quan 
Published: November 2022

Abstract
Bose-Einstein condensation (BEC) trapped in quadruple-well potential with complex coupling provides a great useful platform in theoretical and experimental researches. Utilizing analytical and numerical methods, we investigate tunneling dynamics and the reciprocity of quantum transport of BEC in quadruple-well potential formed by the laser-assisted transition. According to the investigation, the tunneling dynamics of BEC in this system is independent of dissipation and complex coupling between wells caused by Raman coupling laser. By adjusting the coupling phase, the coherent destruction of tunneling can be observed. Meanwhile, this system provides an applicable proposal for reciprocal quantum switch by using the tunneling dynamics of BEC.
Evaluating the detection and trapping of small gas molecules on hydrogenated siligene
Authors: Villarreal-Franco L G , Fernandez-Escamilla H N , Paez-Ornelas J I , Ponce-Perez R , Quijano-Briones J J , Perez-Tijerina E G , Takeuchi Noboru , Guerrero-Sánchez J 
Published: November 2022

Abstract
The use of new two-dimensional systems to detect and capture organic molecules remains a vital research area. In this work, we have investigated, by first-principles calculations, the feasibility of using a hydrogenated siligene (HSiGeH) monolayer to detect and capture small gas molecules through a self-propagating reaction mechanism. We have studied the adsorption of formaldehyde (CH2O), acetylene (C2H2), and ethylene (C2H4) on an HSiGeH monolayer with an H-vacancy (including two situations: an H-vacancy on a Si or a Ge atom). In each case, the molecule chemisorbs at the H-vacancy, increasing the C–O or C–C bond lengths, indicating that double and triple bonds of the molecule are partially broken, resulting in unpaired electrons in one C atom of each molecule. We have found that the hydrogenated chemisorbed molecule -with a new H-vacancy formed on the surface- is the most energetically favorable configuration for each reaction. The viability of the reactions was analyzed by describing the minimum energy path (MEP) computed by the climbing image nudged elastic band method (CI-NEB). Our results show that the self-propagating reaction is viable except for one case, where the C2H4 chemisorbs on the monolayer with the H-vacancy on Ge. These results point toward the application of the HSiGeH monolayer as a possible system for novel gas-removal systems.
Modal analysis of silicon-on-insulator based rib waveguide using fully vectorial finite-difference mode solver
Authors: Kumari Shayna , Prince Shanthi 
Published: November 2022

Abstract
In order to interface optical integrated devices with external sources, an understanding of the modal characteristics of the optical waveguide is essential. The finite difference approach is utilized in this work to analyse a rib waveguide based on a silicon-on-insulator platform. A silicon device layer with thickness of 220 nm and a buried oxide with thickness of 2000 nm are considered. It is important to study the modal field distribution and parameters of the waveguide. The simulation results on the behaviour of modal parameters show that both effective refractive index and group index decrease with wavelength. The effective refractive index of the guided mode increases with rib width and slab thickness. It is also observed that energy is more confined in a deeply etched waveguide than in a shallow etched waveguide. Additionally, it is noted that the effective mode area and full-width half maximum increase with rib width and slab thickness.
Standard model effective field theory from on-shell amplitudes*
Authors: Ma Teng , Shu Jing , Xiao Ming-Lei 
Published: November 2022

Abstract
We present a general method of constructing unfactorizable on-shell amplitudes (amplitude basis) and build up their one-to-one correspondence to the independent and complete operator basis in effective field theory (EFT). We apply our method to the Standard Model EFT and identify the amplitude basis in dimensions 5 and 6, which correspond to the Weinberg operator and operators in the Warsaw basis, except for some linear combinations.
Analysis of Dynamic Characteristics of Hydraulic Driven System for Weight Bearing Lower Limb Exoskeleton
Authors: Su QiYing , Pei ZhongCai , Tang ZhiYong 
Published: November 2022

Abstract
A new kind of weight-bearing lower limb exoskeleton driven by hydraulic cylinder is designed, and its structural characteristics and driving principle are analysed. The mathematical model and control block diagram of the valve controlled unsymmetrical cylinder system for the controlled rotary joint are established. The effects of structural parameters such as servo valve bandwidth, load mass and hydraulic cylinder size on the dynamic characteristics of the system are studied, and the force tracking curve optimized by structural parameters is given to prove the correctness of the theoretical analysis of the system, which provides theoretical support for the design of the weight-bearing lower limb exoskeleton.
Thermal Analysis and Static Lubrication Performance Study of Liquid Metal Journal Bearing
Authors: Wang Haifeng , Wang Yazhen , Xu Zhaoxiang 
Published: November 2022

Abstract
The temperature distribution of liquid metal journal bearing system in X-ray tube of medical CT machine was simulated by using simulation software, and the working temperature of the herringbone groove liquid metal journal bearing was initially determined. On this basis, the lubricating properties of the liquid metal lubricant were analyzed. The lubrication model of herringbone groove liquid metal journal bearing with Galinstan liquid metal as lubricant was established, and the influence of herringbone groove structure parameters on the static lubrication performance of liquid metal journal bearings was analyzed. The results show that the Galinstan liquid metal has good high temperature stability and can act as a reliable lubricant in the high temperature working environment of the medical CT machine X-ray tube.
Study on Calibration of Medical Analgesia Pump
Authors: Wang Huijuan , Xiang Mengdie , Xie Chuandong , Xu Yang , Luo Han 
Published: November 2022

Abstract
The medical analgesia pump is a liquid infusion device that can maintain a stable concentration of drugs in the blood and achieve better analgesic treatment with fewer drugs. It generally allows the patient to self-press to add an additional infusion based on the ongoing infusion, known as patient-controlled analgesia (PCA). It makes the treatment more individualized and consistent with the large variation in pain sensation. It is very important to the analgesic effect and medical safety whether the infusion of medical analgesia pump is accurate and the flow rate is stable. However, the current standard testing methods of the pharmaceutical industry are only applicable to the laboratory testing of the medical analgesic pump in the factory inspection, and not applicable to the evaluation of the accuracy of the medical analgesia pump used in medical institutions. In this paper, an infusion pump quality analyzer was used to calibrate the constant speed and the additional PCA infusion of medical analgesia pump, which ensured the accuracy and reliability of analgesic drug infusion.
Dynamic modeling and simulation analysis of steel wire winding of reinforcement cage roll welder
Authors: Huang Pengliang , Zhang Dongmin , Xu Yincang 
Published: November 2022

Abstract
In view of the problem that the spiral reinforcement material plate is out of sync due to the rotation speed during the work of the reinforcement cage roll welding machine, the spiral reinforcement is broken or loose. By discretizing the steel wire into several micro segments, the dynamic model of steel wire winding based on ADAMS virtual prototype technology is established. By analyzing the motion relationship between the material disc and the flower disc in the roll welding machine, the functional relationship between the material disc speed and time is fitted, so as to realize the dynamic simulation of steel wire winding. By analyzing the stress condition of steel wire micro segments, the accuracy of the material disc fitting speed is verified, At the same time, it provides a basis for the automation transformation and detection control scheme of roll welding machine.
Design and test of a tree-climbing and pruning robot
Authors: Wu Jianping , Yang Xi , Gao Chong , Li Wenhui 
Published: November 2022

Abstract
In view of the problems of manual pruning, such as time-consuming, labor-intensive, low efficiency and low degree of automation, the structure and working principle of the robot for tree-climbing and pruning were studied. Finding the problems in the process of product design, analyzing and defining them, transforming them into the standard mode of solving problems, and using TRIZ theory according to the essence of contradictions to solve the contradictions one by one. The virtual prototype was created to carry out the interference analysis and kinematics simulation analysis of the whole machine. The robot for tree-climbing and pruning was designed by modular design method, which can automatically climb to a certain height to realize the function of pruning and cutting the top of the tree trunk. The duty cycle of the motor output is gradually adjusted by PID algorithm to make multiple motors work synchronously and keep the robot stable in the up-tree pruning process and down-tree process. The robot was made and tested. The experimental results show that the diameter of climbing trunk is 100 mm∼300 mm, and the climbing speed is 1 m/min. It can be used for tree-climbing, pruning lateral branches and cutting main trunks of high-straight trunk trees. It can be self-adaptively held, fall-resistant, obstacle-crossing, and manual operate to improve efficiency.
Finite Element Analysis and optimization design of sprinkler Truss Structure
Authors: Wang Changhu , Meng Weiyun , Wang Jianxiang , Min Xiangmei 
Published: November 2022

Abstract
This paper includes three sections. Truss structures have been widely applied in bridges and buildings due to their light weight, reasonable load-bearing, and high material utilization rate. For truss structures serving as load-bearing carriers, their structural strength should be guaranteed, and moreover, their economic performance should be considered. First, the finite element theory was introduced, and the computer-aided simulation analysis was performed by combining numerical analysis and finite element theory. Second, the truss structure of a sprinkler was subjected to a mechanical analysis, and its stability was explored with its maximum displacement and maximum stress as constraints. Finally, the truss structure was optimally designed until its stability, strength, and stiffness met relevant requirements.
A Method of Connecting Traditional Energy-Consuming Equipment to the Internet of Things
Authors: Li Bingchen , Xiong Lei , Jin Zhongwen , Wang Jie , Tian Haoyu 
Published: November 2022

Abstract
The concept of the Internet of things affects the way that people control electrical appliances. Moreover, due to the increasing importance of energy saving, the transformation of electrical power and energy system (EPES) is urgently needed. However, massive waste of energy caused by the inappropriate use of power-consuming equipment and most of the electrical devices controlled in traditional methods. This paper illustrates an Internet of Things (IoT) and edge computing (EC) technique to intellectualize standard energy-consuming equipment via LoRa wireless technology. The proposed system is low power and supports ad-hoc networks. Each node connects to the Internet via a LoRa based gateway. We mainly focus on controlling regular air conditioning and lighting system in office buildings via web pages, apps, etc. To simplify the process of installing the purposed node, several techniques were used to take over the control of traditional power-consuming equipment via user-side. The EC node can receive the short control command and operate itself according to the environment sensing results without control intelligence from cloud server. The experimental results indicate that our intellectualized network can work reliably and save energy-consuming equipment from wasting power.
Paper Defect Detection Algorithm Based on the Mathematical Morphology and Computer Vision
Authors: Gao Zunhai , Qiu Yuzhan , Zhou Jicheng 
Published: November 2022

Abstract
A method for detecting paper’s surface defects is proposed, which is based on mathematical morphology algorithm and computer vision technique. Firstly, the mean filtering and wavelet denoising in image pre-processing are used to eliminate the image noise, and wavelet analysis can achieve image enhancement and increase the contrast between the target area and the background. And then, an improved threshold Canny operator is used to segment the image to extract the complete scratch line and other defect edges. Finally, the target region features are coloured by mathematical morphology processing. The method’s stimulating result is verified in the Matlab software, from which we can conclude that the method’s detecting effect is very effective.
Using an Improved Artificial Hummingbird Algorithm for Vision-Guided Optimization And Grasping of Multi-Objective Robots
Authors: Yang Rui , Zhou Qian , Mo Qinglong , Gan Lin , Hu Ruihan 
Published: November 2022

Abstract
AHA (artificial hummingbird algorithm) is a meta-heuristic optimization algorithm that simulates the unique flight and feeding patterns of hummingbirds. By combining the excellent strategy of the artificial hummingbird algorithm with the framework of the multi-objective optimization algorithm, the multi-objective artificial hummingbird algorithm is created, improved, and further enhanced. Therefore, the research on vision-guided optimization and grasping control of multi-objective robots based on an enhanced artificial hummingbird algorithm has significant academic significance and vast potential for application.
Discrete spatiotemporal network synchronization based on adaptive control
Authors: Wang HaiFeng , Xu BiGang 
Published: November 2022

Abstract
This paper first introduces the basic concept of network synchronization and several common synchronization types. Secondly, aiming at the synchronization control problem of a class of discrete spatiotemporal networks, a standard synchronization control strategy and a synchronization controller are proposed based on Lyapunov stability theory. In order to further verify the effectiveness of the synchronization theory, the spatiotemporal network model is selected, the coupling matrix and the identification rate of unknown parameters are designed for numerical simulation. Finally, the simulation results show the feasibility of the theory.
Development and Application of Vibration Comfort Detection Device for Escalator Based on MEMS Acceleration Sensor
Authors: Chen Jianxun , Qi Zhengwu , Yang Ningxiang , Luo Weili 
Published: November 2022

Abstract
Vibration comfort is an important indicator for evaluating escalator riding experience. The measuring principle of vibration comfort of escalator step and armbands was analyzed. The calculation methods of vibration acceleration extraction, frequency meter weight, root mean square (RMS) and vector sum were summarized. A wireless triaxial acceleration data acquisition module was developed based on micro-electromechanical system (MEMS) acceleration sensor, MCU and high-speed WIFI module, and a vibration comfort detection application (APP) based on the Android operating system was developed. The calibrated detection device was applied to escalator field test. The results showed that the maximum vibration RMS and average RMS of the step and the armband on both sides can be quickly calculated, and the vibration comfort level can be divided, which provided important data reference for equipment maintenance.
Design and Application of Seabed Sediment Temperature and Pressure Measurement and Control Software
Authors: Chen Shaowei , Zhang Qian , Wu Lei , Pan Mengyao , Jiang Yongjun 
Published: November 2022

Abstract
Taking the temperature-pressure controllable acoustic measurement system for the seabed sediment as the object, according to the HostLink communication protocol of the Omron CP1H type PLC, FINS and C-mode commands are used to design and realize the control and monitoring of PLC by temperature-pressure monitoring software for seabed sediment. Moreover, SerialPort, Timer, and Chart controls in Visual Studio 2010 platform are used to realize the communication, data acquisition, and real-time curve drawing of the industrial field, developing, and realizing the automatic measurement of seabed sediment based on automatic detection and control of temperature and pressure. In addition, the actual measurement and application verify the reliability and stability of the system design.
Stress analysis of gantry crane cylinder structure
Authors: Jiang Aihua , Wang Xinhua , He Shan , Chen Min 
Published: November 2022

Abstract
By building three finite element analysis models for its four-bar metal structure under different amplitudes (the boom span is 13.5m, 22.5m and 34.5m), the relationship between stress, amplitude and load at key parts is established by linear interpolation method; At the same time, the relationship between the measured strain data of key parts and the load and amplitude is linearly fitted. The analysis and comparison between the finite element calculation data and the measured data are well verified. In order to provide a feasible analysis method for solving the working performance of four-bar linkage structure of portal crane. At the same time, it provides a more convenient method for the compilation of typical load, which is the important basic data for the calculation and analysis of residual fatigue life of later structures.
Reliability Evaluation Method of Pseudo-failure Life Distribution for Industrial Robot Servo System Based on The Generalized Lambda Distribution
Authors: Tang Shaomin , Liu Guixiong , Li Xiaobing 
Published: November 2022

Abstract
A reliability evaluation method of pseudo-failure life distribution for Industrial Robot Servo System (IRSS) based on The Generalized Lambda Distribution (GLD) was proposed in the paper. The IRSS pseudo-failure life GLD distribution was established. Quantile estimation method was applied to estimate the GLD parameters. The proposed method had no need of presetting specific distribution morphology, and thus improve the accuracy of IRSS pseudo-failure reliability modeling. In the application experiment, the IRSS pseudo-failure life distribution reliability evaluation method based on GLD was used to obtain the IRSS failure life, the reliability evaluation result was consistent with the design failure life, which indicated the validity of the proposed method.
Time Difference Correction and Location Method for USB Asynchronous Microphone Arrays
Authors: Wang Zhisheng , Yu Hanze , Cui Junning 
Published: November 2022

Abstract
To address the problem of asynchronous delay caused by combining at least two array platforms in 2D/3D location, in this paper, we analyze the impact of time difference between asynchronous devices on time-delay estimation from the experimental phenomenon. Then, we propose a USB asynchronous correction algorithm which takes the known propagation delay as the benchmark, the time difference of asynchronous equipment is calculated by offseting the time delays on the left and right sides. The experimental results show it can correct the time difference for USB asynchronous microphone arrays, which achieve a great location accuracy.