Study on the Belt Mechanics Property of Belt Drive System During Critical Slip State by Liu Ying

“…In order to solve the problem of belt drive system energy loss during belt critical gross slip state,the V belt system is regarded as research subjects,the calculation formula of mechanical property in pulley wrap angle region is deduced,when critical gross slip state,combined with the V belts basis of structural parameters,finally,the belt total pressure and total friction formulas during the critical gross slip state are got by theoretical value derivation. The results show that with the ratio of slip occurs state angle / wrap angle increases,the total pressure between the belt and pulley show a trend of first increase then decrease; when the friction coefficient is small,with the ratio of slip occurs state angle / wrap angle increases,the total friction of the belt as a whole show a downward trend,when the friction coefficient is large,the total friction belts in the overall show a trend of first increase then decrease; through the study of the mechanical property of belt drive system during critical gross slip state,which can provide important significance for the subsequent control of the belt drive slippage and improve transmission efficiency.…”
Get full text

Deconfinement and Freezeout Boundaries in Equilibrium Thermal Models by Abdel Nasser Tawfik, Muhammad Maher, A. H. El-Kateb, Sara Abdelaziz

Get full text

OPTIMIZATION AND POST-BUCKLING ANALYSIS OF A LONG SHAFT ROTOR SYSTEM WITH PINNED-STABILIZED SUPPORTED AT ARBITRARY POSITION by XIAO ShiFu, CHEN HongYong, NIU HongPan

“…The investigation provides a theoretic basis for installing the stabilized support for the long shaft rotor system and for understanding the geometrical nonlinear effect of the system working at supercritical state.…”
Get full text

Methodology for Determining the Compliance Matrix and Analyzing the Skew Anisotropic Plate with an Arbitrarily Shaped Hole by Xiaoli Zhang, Aizhong Lu, Kezhi Song, Guangming Wu, Lei Wang

“…The elliptical, hexagonal, and square holes perforated in skew anisotropic plates are used as examples, respectively, and the stress distributions along the hole boundary are analyzed for different external loadings. Finally, the theoretical method presented in this paper is verified by means of the Finite Element Analysis of ANSYS software.…”
Get full text

Digital Quality Management in Higher Education by A. O. Budarina, K. L. Polupan

“…The study first examines the concept of digital quality management in higher education, and is aimed at featuring the theoretical justification and practical implementation of digital quality management of education at the university level. …”
Get full text

Relativistic Localizing Processes Bespeak an Inevitable Projective Geometry of Spacetime by Jacques L. Rubin

“…Accordingly, a comparison between observational data and theoretical expectations might then be strongly compromised. …”
Get full text

Research on test strategy for randomness based on deep learning by Dongyu CHEN, Hua CHEN, Limin FAN, Yifang FU, Jian WANG

“…In order to achieve better test performance, researches on the randomness test strategies based on deep learning were conducted, including the batch average strategy proposed by EUROCRYPT 2021 and the selection strategy for data unit size.By introducing the randomness statistical test model based on deep learning methods, the statistical distribution and test power expression of two test strategies were theoretically derived, and it was pointed out that: (i) the batch average strategy could amplify the prediction accuracy of the model, but it was prone to an increase in the probability of the second type of error in statistics, instead reducing the statistical test power; (ii) the smaller data units of the deep model generally obtained the more powerful statistical tests.Based on the above understanding, a new bit-level deep learning model was proposed for randomness statistical tests, which gained the advantage of prediction with 80 times fewer parameters and 50% samples, compared with the previous work on linear congruent generator (LCG) algorithm, and achieved significant prediction advantages with 10～20 times fewer parameters by extending the model to apply to 5～7 rounds of Speck, compared with the model proposed by Gohr.…”
Get full text

Optimization Design of Mountain and Water Landscape of Traditional Mountain Village Based on New Robot Visual Technology by Xinxin Jia, Ruixin Liu, Zhi Qiao

“…The reasonable application of the random sampling consistent algorithm can be used to eliminate the theoretically possible error points and then complete the initial aiming pairing. …”
Get full text

Research Progress on Zearalenone Biodegradation and Its Detoxification Mechanism by LI Kailong, LIU Kunlun, XIN Ying, YANG Chenxian, WANG Zikun

“…In this paper, the toxicity and harm of ZEN, microorganisms and enzymes that degrade ZEN, and the application of modern biotechnology in the removal of ZEN are reviewed with particular emphasis on the types of biodegradation products and the detoxification mechanism of ZEN, and potential directions for the application of ZEN are pointed out so as to provide a theoretical basis for further studies on biological detoxification of ZEN.…”
Get full text

Mutual Impedance Properties in a Lossy Array Antenna by Peter L. Tokarsky

“…Consideration of the power balance in the lossy array antenna has allowed ascertaining that its impedance matrix is a sum of the radiation resistance matrix and loss resistance matrix, which are in general case complex Hermitian matrices and only in some particular cases can be real. The theoretical statements obtained are confirmed by two numerical examples, where analysis of two lossy dipole arrays was performed. …”
Get full text

Quantum computing for extracting nuclear resonances by Hantao Zhang, Dong Bai, Zhongzhou Ren

Get full text

QFT Derivation of the Decay Law of an Unstable Particle with Nonzero Momentum by Francesco Giacosa

“…We present a quantum field theoretical derivation of the nondecay probability of an unstable particle with nonzero three-momentum p. …”
Get full text

Study on adaptive modulation in D2D communications over Nakagami-m fading channel by Xiaoping ZENG, Haiwei MAO, Fan YANG, Xin JIAN, Shiqi LI, Xin JIANG, Wei FANG

“…A novel adaptive modulation based on nondata-aided error vector magnitude (NDA-EVM) was proposed to solve the problem of lower spectral efficiency in device to device (D2D) communication over Nakagami-m fading channel.The NDA-EVM was used to evaluate the channel quality.The relationship between NDA-EVM and symbol error ratio (SER) was derived according to the maximum likelihood method.Thereafter,the adaptive modulation mechanism of MQAM with the SER constraint was designed.Considering the joint effect of finite-length queuing and fading channel,the system packet loss rate and spectral efficiency was analyzed.Theoretical analysis and simulation experiments show that NDA-EVM based adaptive modulation accurately gives the modulation threshold and evaluates the relationship between QoS and packet loss rate,the proposed algorithm improves system spectral efficiency while maintaining low algorithm complexity,spectral efficiency improves by 0.752 bit·(s·Hz)^-1,compared with traditional algorithm.…”
Get full text

Research on Modification of Bending Machine Sprockets and Its Influence by Xia Zhongrui, Wang Huipeng, Ou Jianbin

“…First of all, the operation characteristics of the chain drive are analyzed theoretically.Then the simulation model of the bending machine chain drive system is established by using the RecurDyn software, and the dynamic simulation analysis and gear tooth static strength analysis are carried out. …”
Get full text

W kierunku dwujęzyczności w edukacji wczesnoszkolnej – problemy nauczania czytania w języku obcym na przykładzie języka angielskiego by Monika Kusiak-Pisowacka

“…The results of the study revealed that the coursebooks differ in the way they teach beginning reading, raising important questions of both didactic and theoretical nature. …”
Get full text

Study on the Effect of Clearance on Eliminating Flexible Impact of Series Geneva Mechanism by Zhao Yong, Huang Chunqiang, Yao Jin, Li Hua

“…Using appropriate series geneva mechanism can eliminate the flexible impact in theoretically,but the unavoidable clearances between pin and slot exist in practical engineering application. …”
Get full text

Research on end hopping and spreading for active cyber defense by Leyi SHI, Hongbin GUO, Xiao WEN, Jianlan LI, Yuwen CUI, Mengfei MA, Hui SUN

“…Inspired by the spread spectrum technology for communications,the concept of end spreading was proposed to represent a piece of information of the data transmission with a sequence of multiple end information,of which each piece of end information was irrelevant to the information it conveys.Thus the covert data transmission can be performed.Further,an active cyber defense model of end information hopping and spreading was presented,in which the hopping strategy was separated from the synchronization strategy.The synchronization was accomplished by means of end information spreading for synchronous authentication of both parties,which can solve the high-speed hopping synchronization problem with high concealment requirements.The mode of generation,transmission and authentication of the spreading sequence,and the data migration strategy in the end hopping and spreading model were described in detail,and the security performance and synchronization performance were analyzed and verified experimentally.Theoretical analysis and experimental results show that the cyber defense model of end information hopping and spreading has improved the availability and confidentiality of network services under high-speed hopping and has good anti-attack performance,which is of great significance for the proactive defense application of high intensity confrontation.…”
Get full text

PDO Economy and Quality Agri-Food District in the wine sector: Blockchain and digitalization as tools for the twin transition by Graziella Benedetto, Maria Bonaventura Forleo

“…The twin transition has great potential for the development of the wine sector, although its benefits for the valorisation of the Protected Designation of Origin (PDO) economy and at the quality districts level are not explored in depth either in the theoretical or empirical literature. The study aims to contribute to this knowledge gap from a strictly conceptual perspective, by investigating benefits and obstacles that Blockchain and digital technologies can have to favour the creation and implementation of a quality wine district towards a sustainable path. …”
Get full text

Study of Suspension Parameters Matching to Enhance Vehicle Ride Comfort on Bump Road by Jin Gao, Xiaoping Qi

“…Vehicle vibration and suspension stiffness are analyzed theoretically. In the simulation study, the influence of the front and rear wheels on the vehicle vibration is considered, so the time-domain curves of the front and rear seat rail accelerations are processed by adding windows with two different window functions. …”
Get full text

Changing States of Multistage Process Chains by Thorsten Wuest, Christopher Irgens, Klaus-Dieter Thoben

“…This is elaborated with simplified examples of possible applications from different domains to make the theoretical concept and results more feasible for readers from varying domains. …”
Get full text