bluuebunny/crossref_metadata_2025_split huggingface dataset:
Microcanonical conditioning of Markov processes on time-additive observables
Authors: Monthus Cécile 
Published: February 2022

Abstract
The recent study by De Bruyne et al (2021 J. Stat. Mech. 123204), concerning the conditioning of the Brownian motion and of random walks on global dynamical constraints over a finite time-window T, is reformulated as a general framework for the ‘microcanonical conditioning’ of Markov processes on time-additive observables. This formalism is applied to various types of Markov processes, namely discrete-time Markov chains, continuous-time Markov jump processes and diffusion processes in arbitrary dimension. In each setting, the time-additive observable is also fully general, i.e. it can involve both the time spent in each configuration and the elementary increments of the Markov process. The various cases are illustrated via simple explicit examples. Finally, we describe the link with the ‘canonical conditioning’ based on the generating function of the time-additive observable for finite time T, while the regime of large time T allows us to recover the standard large deviation analysis of time-additive observables via the deformed Markov operator approach.
Research and Analysis on Cavitation of Different Structures of Cone Valve Ports in Pure Water
Authors: Zhou Xinjian , Liu Siyu , Lu Yongfeng , Zhang Hongbing , Shao Hongbin , Tian Yan 
Published: February 2022

Abstract
In order to study the cavitation problem of the pure water medium hydraulic poppet valve, a three-dimensional model of the poppet control valve under a rated pressure of 31.5MPa was established with the help of Soildworks software, and the poppet valve port model was simplified into a two-dimensional symmetrical model with AutoCAD software. Based on the FLUENT software, the liquid-gas two-phase flow simulation of the cavitation phenomenon in the flow field of the poppet valve is carried out, and the cavitation distribution and intensity change rules of the three valve port structures at three opening degrees are obtained. The results show that for the pure water medium hydraulic cone valve, the cavitation distribution in the new stepped structure is significantly reduced and the strength is significantly reduced under the same opening degree.
Terminal Iterative Learning Scheme for Consensus Problem in Multi-Agent Systems with State Constraints
Authors: Zhang Yan , Luo Zijian , Xiong Wenjun 
Published: February 2022

Abstract
In this paper, we investigate the consensus problem of multi-agent systems with state constraints. To achieve the consensus effectively, the terminal iterative learning approach is proposed. This learning strategy is designed without the tracking error. And the consensus state is obtained by the the information interaction between agents. Meanwhile, the constraint condition holds in terms of our learning strategy. It shows the consensus conditions ensure the achievement of the constraints. Finally, a numerical simulation is given to illustrate the effectiveness of the main results.
Design of Intelligent Garbage Classification System Based on Internet of Things Technology
Authors: Tan Yanping , Guo Wei , Yang Ke , Huang Jingjing , Yang Zhengping 
Published: February 2022

Abstract
With the increasingly prominent problem of environmental pollution, it is extremely urgent to carry out garbage classification. This paper designs an intelligent garbage classification system based on Internet of Things technology, The system is mainly composed of relay driving circuit, infrared induction, metal detection and humidity detection modules. Single chip microcomputer and multi-channel sensors are used to collect and process related data to realize metal garbage recovery, dry garbage and wet garbage classification and delivery, and the collected related data are displayed on the display screen through serial communication. The experimental results show that the system has the characteristics of simple structure, stable performance and convenient operation, which provides a feasible solution for the current garbage classification and treatment.
Accelerated Life Test Technology Based on Unilateral Confidence Estimation
Authors: Cao Yaolong , Zhao Hailong , Xi Shanbin , Peng Hao 
Published: February 2022

Abstract
The test principle, test type and test model of accelerated life test, as well as the data processing method of unilateral confidence estimation are introduced. Taking the enhanced field effect transistor as an example, a reasonable accelerated life test scheme is formulated by selecting the appropriate accelerated test model and stress conditions. After the test, the life characteristic value of the device under normal stress level is calculated according to Arrhenius equation and unilateral confidence estimation method. Through research, an accelerated life test method for processing non failure data is provided.
The Analysis of High-Speed Low-Power Dynamic Comparators
Authors: Chen Zhenxiang , Ni Yuheng , Xiong Zhenghao 
Published: February 2022

Abstract
This article reviews 5 different articles on optimizing comparators and focuses on their innovations. Many innovative methods are used to get a higher comparison speed, lower power consumption and degraded noise comparator. Many novel methods such as connecting the conventional two-stage dynamic comparator to a transconductance-enhanced latching stage, adding a charge pump to the Miyahara’s comparator, engendering two propagating edges in two inverter loops and measuring the distance between the two edges to compare different input voltage and using an inverter-based input pair which is powered by a floating reservoir capacitor can significantly achieve these goals. What’s more, a three-stage feedforward fully dynamic comparator with an extra parallel feedforward path, which is a completely innovatory and newly designed comparator, is also proposed.
Research on intelligent lighting mode based on implicit humancomputer interaction
Authors: Pei Yuezhou , Wang Qi 
Published: February 2022

Abstract
In this paper, through the research based on implicit interaction elements, the important role of autonomous implicit feedback in intelligent lighting scenes is pointed out, and the lighting control method based on IILCM mode is proposed. The autonomous implicit feedbacks lighting system which is consisted of two components with sensors and MCU is designed and implemented. Describes the hardware structure and software module functions of the system, as well as the design principles of intelligent lighting products in the implicit interactive mode. The experiment shows that, for different users, the system can effectively adjust its brightness output adaptively, which can greatly reduce the burden of users using the equipment, and meet the requirements of the implicit interactive mode for light source brightness control.
Simulation and optimization for pressing system of hydraulic brick press based on AMESim
Authors: Zheng HongBo , Li MingJun , Wang ZhouLin 
Published: February 2022

Abstract
In order to solve the problems of impact vibration and roar in the working process of the automatic hydraulic brick press, a simulation model of the hydraulic system was established based on AMESim, and the dynamic simulation analysis of the upper cylinder was carried out to find out the cause of the problem. It was solved by installing a deceleration circuit and improving a pressure relief circuit. Finally, the optimized hydraulic system was simulated and verified, and the results proved that the optimized hydraulic system achieved the desired effect.
Design of various parts of multi-joint bionic fish equipment
Authors: Shang Qingli 
Published: February 2022

Abstract
The multi-joint bionic fish has a convenient and stable structure, small size, and can be used in different occasions. At present, it can be used in normal underwater activities and can effectively solve the difficult problem of underwater exploration. The equipment consists of six parts in total: fish wing forward device, fish wing movement linkage device, single joint connection device, fish tail stabilization device, fish body bending and direction changing device, and driving device. Satisfying the basic requirements can solve the problem of underwater operations.
Troubleshooting and Improvement of Mechanical Overspeed Shutdown of Diesel Generator
Authors: Tang Ran , Wang Shuren , Xiao Biao , Wang Heng 
Published: February 2022

Abstract
This paper introduced the components and functions of control components of a ship automatic power station, with an analysis of the control principle of such station. The fault treatment method and troubleshooting process are elaborated based on mechanical overspeed automatic shutdown fault of the generator. Finally, in view of the problem of 4K6 relay, appropriate improvement measures are proposed.
Full-Waveform Inversion for Subsurface Penetrating Radar based on Adaptive Bilateral Total Variation Regularization
Authors: Cao Laibao , Liu Tao , Shen Mengmeng , Wang Yujun , Huang Chunlin 
Published: February 2022

Abstract
Full-waveform inversion (FWI) of subsurface penetrating radar (SPR) is one of the most promising techniques for quantitative reconstruction of high-resolution dielectric properties distribution. However, due to the incomplete observation data of surface detection, there is significant ill-posedness in inversion and the inversion accuracy is lower than expected. In this paper, an FWI method for SPR data with adaptive bilateral total variation (ABTV) regularization is proposed. The method utilizes ABTV regularization to supplement the data constraints and retains the anomaly body boundary information. In addition, the regularization function of adaptive weight factor matrix is designed for the limitation of the standard bilateral total variation (BTV) regularization, which considers both the smoothing effect and the edge preservation effect. Synthetic experiment shows that the proposed method can reconstruct the permittivity distribution more accurately from 2-D SPR data.
A distributed photoelectric sensing and simulation training method for the UAV swarm
Authors: Liu Rang , Wu Jian , Zhao Yanjie , Liu Changqing 
Published: February 2022

Abstract
Aiming at the shortage of the training samples in the process of target recognition of the UAV swarm distributed photoelectric sensing system, the distributed photoelectric sensing and training technology based on the loop simulation is studied. This paper discussed the hardware architecture and software architecture of distributed photoelectric sensing and training system, as well as the design of distributed video splicing and target recognition algorithm. Finally, a simple distributed photoelectric sensing hardware in the loop simulation training system applied to UAV cluster was built in the laboratory, and the feasibility of this technology was verified by experiments.
A way to synchronize clocks with the FlexRay bus
Authors: Pang Fengying , Huang Min , Mi Zhaoyang , Zhang Huimin 
Published: February 2022

Abstract
In order to ensure that different systems work together under the same clock, it is necessary to propose a unified time management system and a unified time benchmark, this paper studies the method of clock synchronization based on FlexRay bus, which has been verified by the laboratory to achieve clock synchronization by FlexRay bus, with synchronization accuracy of less than 10us.
Research on the Convergence Application of Satellite Mobile Communication and Wireless Ad Hoc Network
Authors: Cao Lei , Yang Xing 
Published: February 2022

Abstract
The article analyzes the networking modes and main features of satellite mobile communications and wireless ad hoc networks, and proposes to build a dual-function terminal of satellite mobile communications and wireless ad hoc networks. By merging the respective advantages of the two communication modes, the application range of satellite mobile communication can be further expanded, and finally exemplified typical application scenarios.
Polynomial chaos expansion for uncertainty analysis and global sensitivity analysis
Authors: Chen Ming , Zhang Xinhu , Shen Kechun , Pan Guang 
Published: February 2022

Abstract
Uncertainty analysis has received increasing attention across all kinds of scientific and engineering fields recently. Uncertainty analysis is often conducted by Monte Carlo simulation (MCS), while with low convergence rate. In this paper, numerical test examples as benchmarks and engineering problems in practice are studied by polynomial chaos expansion (PCE) and compared with the solutions got by MCS. Results show that PCE approach establishes accurate surrogate model for complicated original model with efficiency to conduct uncertainty analysis and global sensitivity analysis. What’s more, sparse PCE is able to tackle problem of high dimension with efficiency. Hence PCE approach can be applied in uncertainty analysis and global sensitivity analysis of engineering problems with efficiency and effectiveness.
Impact Damage Characteristics of Quartz Fiber and NOMEX Paper Honeycomb Sandwich Panel composite materials
Authors: Zhou Xiang , MA Zhandong , Liu Xiaofei 
Published: February 2022

Abstract
To provide a reference for practical engineering application of fiber composite materials, this work researches on the impact resistance of type-B quartz fiber/modified cyanate ester composite material laminates and NOMEX paper honeycomb sandwich panels. Firstly, low-speed impact tests are carried out on the quartz fiber laminates and the NOMEX paper honeycomb sandwich panels by setting different parameters to analyze the impact energy and punch mass on impact damage; secondly, based on the experimental results, impact responses are analyzed; and the damage morphology of the two composite materials is observed through visual inspection and with the aid of the CT scanning technology. The results show that according to time-load curves, the NOMEX paper honeycomb sandwich panels have two peak load moments, respectively corresponding to the moments when the upper and lower panels are penetrated; the quartz fiber laminates show three different types of failures, namely substrate cracking, fiber fracture and delamination. As for the NOMEX paper honeycomb sandwich panels, two types of damage are found: fiber fracture and honeycomb core extrusion fracture. When the punch mass is constant, the greater the impact energy is, the more serious the damage is; and when the impact energy is constant, the greater the punch mass is, the more serious the damage is.
Applications of Metal-Organic Framework Materials
Authors: Chai Wenkui , Shen Youhong , Wang Jiahe , Zhang Geling 
Published: February 2022

Abstract
Metal-organic framework (MOFs) is a new group of porous crystal materials with ultra-high porosity. Its extraordinary surface area, fine and adjustable void surface characteristics and potential industrial-scale scalability make it an attractive target for further research. By searching for the data, we have integrated and summarized the important applications of MOF materials in many fields, such as catalysis, and its enclosed single metal or bimetallic ions provide efficient and synergistic catalytic ability; In adsorption, the special ionic liquid absorbent overcomes the shortcomings of other materials, greatly improves the chemical stability, reduces the corrosivity, and makes the process more environment-friendly and controllable. However, there are still many challenges, and the high cost and complicated preparation process are urgent problems to be solved at present. We need to have a deeper understanding of the growth mechanism of MOF films, improve their quality and thermoelectric stability, and combine them into low-cost polymer films through more reliable theoretical models to eliminate the defects of MOF materials as much as possible. We will continue to pay attention to the development of MOF materials, summarize the advantages of MOF materials, find out the shortcomings, and propose solutions to provide ideas and references for future research.
Numerical Simulation Research on Slow cook-off of Warhead of DNAN-based Melt-cast Explosive
Authors: Zhang Kebin , Li Wenbin 
Published: February 2022

Abstract
RBOE explosive is a new type of DNAN-based insensitive melt-cast explosive with good thermal safety. In order to study the response characteristics of RBOE explosives under slow cook-off conditions, this study carried out a numerical simulation study of slow cook-off for the ϕ35mm×116mm RBOE cylindrical warhead. According to the thermal decomposition characteristics of each component of the explosive, the thermal reaction model of the RBOE explosive was established. Numerical simulation of RBOE warhead cook-off was carried out at a heating rate of 1K/min; the internal temperature rise curve, phase change cloud diagram and ignition cloud diagram of the warhead were obtained, and the thermal response characteristics of the RBOE explosive were analyzed.
Applications and Future Developments of Flexible Organic Light-emitting Diode
Authors: Lei Buyu , Li Ruowei , Wu Jingyao , Yan Ran 
Published: February 2022

Abstract
With the rapid development of display technology, human beings have more and more stringent requirements for display products, e.g., their light weight, thinness, flexible performances, and versatility. Contemporarily, the flexible organic light-emitting diode (OLED) technology and its derived multi-layer structure tend to be wearable, light, and responsive in a short time. Although flexible OLED technology is popular, there are still many problems that needs to be addressed, e.g., new raw materials, rough flexible substrate, and low efficiency in workmanship, resulting in poor luminescence, rough and inflexible products. In this paper, a new type of flexible fiber display system is proposed by combining OLED with conductive optical fiber. This paper comprehensively introduces the mechanism, manufacturing technology and structure of this new type of flexible OLED. It covers various scopes like Internet information communication, real-time positioning, and medical assistance, etc. Despite some challenges and limitations, this product possesses a variety of advantages in terms of its convenience and flexibility, which makes the exploitation of a large range of applications probable. Therefore, it is highly expected that these promising prospects of development will stimulate the further progress in display fabrication, which helps to facilitate people’s lives in the future. These results shed light on the significance of developments of flexible OLED technology.
Research on the Progress of VOCs Adsorption by Biomass Nanocomposites
Authors: Wei Qing , Yang Jie , Tian Changan , Zhang Zhongmin , Zhang Xuan , Zhang Zhixin , Li Dong 
Published: February 2022

Abstract
The avoidance and control of the air is forthcoming, and its deterioration sources have a wide range of origin. Among them, the emission of VOCs is worthy of our attention. Its source is very wide, which seriously define the improvement of green chemical industry in our country. There are many types of VOCs, and when the concentration is too high, it will cause serious harm to the human body. Therefore, the avoidance and control of VOCs gas has become one of the current research tosspots. In this paper, several methods for alter VOCs gas are related, and it is found that adsorption is more economical and safer, and the core is the preparation of adsorbents. At the same time, the preparation of high-performance VOCs adsorbents based on TiO2 as the matrix and manganese-based as the raw material of biomass waste is also prospected.
A study on the capture of a droplet impact on a fiber
Authors: Gu Wenquan , Bai Zhishan 
Published: February 2022

Abstract
The phenomenon of droplets captured by fibers is ubiquitous and plays an important role in natural and industrial applications. This study focused on the impact process during a droplet impact on a fiber and established a physical model to describe this process. The critical velocity of capture above which the droplet might not be captured after the impact was deduced according to this model and the influence factors were investigated. These findings will be helpful to elucidate the mechanism of the impact between droplets and fibers and optimize the design of coalescence applications.
The effect of magnetic field on freezing point of water
Authors: Li YanMin , Lin HaiFei , Yang ZhenDong 
Published: February 2022

Abstract
Cold storage technology can realize energy storage and release according to demand and balance the power grid by “shifting peak and filling valley”. Ice cold storage system has the outstanding advantages of large cold storage density and simple system, and is the frontier direction of current cold storage technology research and application. However, there are some problems such as low phase transition temperature of cold storage medium and high energy consumption under cold storage condition. The research shows that magnetic field can increase the freezing point of water and aqueous solution by about 3.0-5.0K, which is beneficial to further increase the economic benefit and save energy in refrigeration condition based on the refrigeration demand.
The effects of temperature on surfactant solution: A molecules dynamics simulation
Authors: Feng Pang , Wang Linlin 
Published: February 2022

Abstract
We use molecules dynamics simulation to investigate the effects of temperature on surfactant solution, both the microcosmic and macroscopic performance of the surfactant solution. Results show that the increase of temperature has bidirectional influence on the capability of the surfactant solution. From the microscopic point of view, the thermophoresis of the free water molecules has arisen in the forward of the temperature, which causes the hydrogen bonding between molecules fracture and reconnection. And the micelles keep close to and detached from each other for these. From a macro perspective, viscosity will decrease with temperature. But when the temperature is about 392.15K, the viscosity-temperature curve will have a peak value. Combining the micro results and macro results of the molecules dynamics simulation, we can clearly draw a conclusion that the effects of temperature on the surfactant solution never are monotonic.
Poly-amino-based ionic liquids coupled with semi-coke for biogas upgrading
Authors: Chen Yang , Liu Mei , Qu Zhihui , Su Ziwei 
Published: February 2022

Abstract
Poly-amino-based ionic liquid (IL) [TETAH]+[BF4]- was mixed with sodium hydroxide solution for CO2 separation from biogas in a spray scrubber packed with modified semi-coke. A CO2 absorption capacity of 0.92mol was achieved when controlling the outlet CO2 concentration below 3 vol%. The porous structure of semi-coke contributed to improving CO2 absorption. Nitric acid oxidation and heat treatment could increase the specific surface area, enlarge the intrinsic pores and develop more micropores. Semi-coke firstly oxidized by nitric acid and then with heat treatment could not only exhibit higher specific surface area and more porous structure, but also show less degree of graphitization, which was suggested as possible to increase the reactivity to CO2. It was assumed that the absorption system in this research showed promising application in CO2 separation from biogas as well as waste treatment.