Estimation of International Gold Price by Fusing Deep/Shallow Machine Learning by Wenjing Chen

“…With three granularities per month, a 3-layer quotient space is constructed based on the synthesized and calculated granularities. The proposed method provides the prediction results that are compared with the predicted values of some grey models (GM) and the actual gold price, respectively. …”
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Simulation and Experimental Research on Tooth Power Skiving Cutting of Double-circular-arc Internal Gears by Wang Feng, Yang Shufeng, Xu Wenbo, Zhang Weijie, Yu Wentao

“…Abaqus is used to simulate and calculate the cutting force during the power skiving process, and the influence of machining parameters on the cutting force is obtained. …”
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Improved Genetic Algorithm for Distribution System Performance Analysis by Taking Advantage of Essential Spanning Trees by Yanzhu Ji, Zhuoqun Shi, Robert M. O’Connell

“…By using essential trees, the efficiency of the calculation is improved.…”
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Heterogeneous wireless sensor network routing protocol based on simulated annealing algorithm and modified grey wolf optimizer by Xiaoqiang ZHAO, Shaoya REN, Yongzhi ZHAI, Heng QUAN, Ting YANG

“…It’s one of the main goals of the heterogeneous wireless sensor network (HWSN) to extend the network lifecycle by reasonably utilizing the heterogeneity of node energy.Therefore, according to the heterogeneity of node energy, a routing protocol (SA-MGWO) for HWSN based on simulated annealing (SA) algorithm and modified grey wolf optimizer (GWO) was proposed.Firstly, the appropriate initial clusters were selected by dening different tness functions for heterogeneous energy nodes.Secondly, The tness values of nodes were calculated and treated as initial weights in the GWO.At the same time, the weights were updated dynamically according to the distance between the wolves and their prey and coefficient vectors to improve the GWO’s optimization ability.Finally, simulated annealing algorithm was used to ensure the selection of optimal cluster set in heterogeneous networks.Compared with stable election protocol (SEP), distribute energy efficient clustering (DEEC), modified stable election protocol (M-SEP), and fitness value based improved grey wolf optimizer (FIGWO) protocols, the experimental results indicate that the network lifecycle of the SA-MGWO protocol improves by 53.1%, 31.9%, 46.5% and 27.0% respectively.…”
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The Impact of COVID-19 on the Dependence of Chinese Stock Market by Xianbo Wu, Xiaofeng Hui

“…By calculating the mutual information of stock indexes of 10 primary industry sectors in China, this paper analyzes the dependence relationship among Chinese stock sectors during the COVID-19 and the dynamic evolution of the relationship by using the sliding window method. …”
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Mitigating errors in analog quantum simulation by Hamiltonian reshaping or Hamiltonian rescaling by Rui-Cheng Guo, Yanwu Gu, Dong E. Liu

“…Hamiltonian rescaling mitigates errors by comparing eigenvalue estimates from energy-scaled Hamiltonians. Numerical calculations validate both methods, demonstrating their significant practical effectiveness in enhancing the accuracy and reliability of analog quantum simulators.…”
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ONE EVALUATION METHOD FOR THE CONTRIBUTION OF SUBSTRUCTURE STIFFNESS TO ARRAY FRAMEWORK STIFFNESS (MT) by WANG Chao, SUN XiaoGang, GU YeQing, Lü ZhenHua, Lü YiNing

“…The mean square root of reflector deformation is often used to measure the stiffness performance of array, but the root mean square method can only analyze the overall stiffness of the framework, and can not evaluate the stiffness of local modules and their contribution to the overall stiffness.To solve this problem, the stiffness contribution of substructure（λ） and substructure bearing coefficient（α） were proposed based on the design criteria of substructure strain energy and uniform strain energy density, which has high calculation efficiency and wide application. Through this two parameters, the stiffness contribution of substructure in complex structure can be evaluated and analyzed conveniently. …”
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THE CORRELATION BETWEEN STUDENTS’ HABIT IN LISTENING TO ENGLISH SONGS AND THEIR ENGLISH LISTENING COMPREHENSION SKILL by Rasma 'Afifah

“…The result of the research indicates that the students’ habit in listening to English songs is in Fair category and their English listening comprehension skill is in Very low category. The calculation of correlation result points out that the correlation between their habits in listening to English songs and their listening skill is very low so that the correlation is disregarded. …”
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HPRNA: Predicting synergistic drug combinations for angina pectoris based on human pathway relationship network algorithm. by Mengyao Zhou, Mengfan Xu, Xiangling Zhang, Xiaochun Xing, Yang Li, Guanghui Wang, Guiying Yan

“…Finally, we introduce a novel indicator to calculate drug pair scores which measure the likelihood of forming synergistic drug combination. …”
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Ethyl -butyl ether synthesis using carbon catalysts from lignocellulose by Alexander M Puziy, Yuriy N Kochkin, Olga I Poddubnaya, Mykola M Tsyba

“…Carbon catalysts obtained from lignosulphonate and sucrose showed the highest catalytic activity in ethyl tert-butyl ether synthesis (reaction rate at 120℃ is 4.3–5.2 × 10 −6  mol·g −1 ·s −1 ), is comparable to activity of Amberlyst-15 (5.0 ×10 −6  mol·g −1 ·s −1 ). Calculated turnover frequency (TOF) of sulphonic groups (pK a  = −2.5) equals 0.00116 s −1 , polyphosphate groups (pK a  = 1.9) 0.01019 s −1 , strong carboxylic (pK a  = 3.6) 0.00202 s −1 and 0 s −1 for weak carboxylic (pK a  = 6) groups. …”
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Internet search and lexical-semantic processing of analogs when making decisions in various subject areas by S. F. Lipnitsky

“…At the second stage, the information content of each class is calculated. The most informative of the generated classes, after their indexing, are used as queries. …”
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Nonlinear Analysis Method for Serviceability Investigation of Bridge Deck Ends with a Concrete Slab Track by Deokyong Sung

“…The serviceability review of the end deck is time-consuming in that it is necessary to calculate the force of fasteners; also, the design is complex because of the many girders, fasteners, and loads. …”
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Evaluation Algorithm of Labor Legal Effectiveness for Affirmative Action against Gender Discrimination by Liao Juan

“…After normalization, the weight of the evaluation index is calculated by entropy method, which lays a foundation for subsequent research. …”
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Metal foaming by powder metallurgy process: investigation of different parameters on the foaming efficiency by Ioannis Papantoniou, Helena P. Kyriakopoulou, Dimitrios I. Pantelis, Dimitrios E. Manolakos

“…During the foaming stage, for each set of parameters the porosity-time (Pf-t) diagrams were created and the foaming efficiency was calculated (?=Pfmax). Results indicated that the highest foaming efficiency was observed at the specimens with the fine alu¬min¬ium powder, with high (700 MPa) compaction pressure and high foaming temperatures (800 oC). …”
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Truthful incentive mechanism for “digital currency”based on privacy protection by Xiao CHEN, Xinran LYU, Zhi LIU

“…Many national central banks have conducted legal digital currency research based on distributed ledger technology,but only the UK has disclosed the accounting structure of the legal digital currency framework RSCoin,and the incentive mechanisms was proposed to encourage mintettes to provide honest collaborative accounting services.However,this mechanism does not take into account the differential service costs of mintettes,nor does it give a definite compensation distribution.The privacy costs of the mintettes were fully considered,the incentive model of the central bank and mintettes were established,and the methods were clarified to compensate mintettes.In the legal digital currency research area,an incentive mechanism POPTIM was proposed firstly,that not only protects the private cost of the mintettes,but also guarantees the mintettes report their truthful bidding prices to the central banks.POPTIM first encrypts the biddings of mintettes by coding hash encryption method,then adopts privacy-preserving sorting algorithm to select the winner mintettes,and finally calculates the reward of mintettes based on the homomorphic addition algorithm.The analysis shows that the mechanism is privacy security,computationally efficient,individually rational and truthful simultaneously.…”
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Brock's approaching zero method improved as approaching fixed point frequency to solve optimum damping ratio of dynamic vibration absorber in machine tools and experimental confirm... by Hongliang Tian, Xixiao Liang, Xuan Du

“…A general method of obtaining the explicit exact solution to the optimum damping ratio was presented to improve the accuracy of calculating the dynamic vibration absorber's optimum parameter. …”
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Lightweight and Reliability Analysis of the Heavy Duty Driven Axle Housing based on the Finite Element Theory by Tuo Qianjin

“…Aiming at the problems of the process of driving heavy duty truck fuel consumption,higher manufacturing costs and so on,according to the finite element theory,the heavy duty truck driven axle housing lightweight design is carried out,and the light weight calculation results are imported into the finite element model to study the deformation of the axle housing before and after optimization at maximum load optimization uneven roads conditions of stress,life and safety coefficient changes.The results show that after the axle housing thickness lightweight size optimization,wheel area,leaf springs to the axle core area and axle core,the trend of the overall thickness of the axle housing is downward,there is no change to the wheel area to leaf spring transition area thickness.After the axle housing thickness lightweight size optimization,the trend of the total volume is a downward,the volume of the initial value is from 0.043m3 dropped to 0.0343m3,after lightweight size optimization,the axle housing stress and deformation,life and safety factors are little difference with before optimization,it is indicating that meet the requirements of lightweight of axle housing.…”
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FAULT DIAGNOSIS METHOD OF DIESEL ENGINE BASED ON PCA-EDT-CNN (MT) by BAI YunJie, JIA XiSheng, LIANG QingHai, MA YunFei, WEN Liang

“…Firstly, use Principal Component Analysis（PCA） to adaptively reduce the original data collected by the sensor, and construct a qualified Principal Component Eigenvector Matrix（PCEM）; secondly, perform Euclidean Distance Transformation（EDT） on PCEM, calculate the Euclidean distance between each row and construct the Euclidean Distance Matrix（EDM）; finally, flatten PCEM and EDM into one-dimensional vectors and synthesize a one-dimensional sample sequence, input into One-Dimensional Convolutional Neural Network（1 DCNN） to train and diagnosis the model. …”
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Comparative assessment between different sample preparation methodologies for PTGA CO adsorption assays—Pellet, powder, and fragment samples by Alessandro da S Ramos, Gabriel E de Araujo, Leonardo Siviero, João MM Ketzer, Roberto Heemann, Rogerio V Lourega, Luiz F Rodrigues

“…Experiments using a thermogravimetric balance were done to calculate the theoretical adsorption capacity, while sample characterization was done through immediate analysis, elementary analysis, and mineralogical studies. …”
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Robust Sliding Mode Control of Robot Manipulators Using the Fourier Series Expansion in the Presence of Uncertainty by Abdullah Hadipoor, Siamak Azargoshasb, Abdolrasool Ghasemi

“…<p>In this paper, a robust dynamic slip mode controller for an electrical robot manipulator is presented. The control law calculates the motor voltage based on the voltage control strategy. …”
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