MECHANICAL ANALYSIS OF HIGH-SPEED RAILWAY SLAB BALLASTLESS TRACK UNDER WORKING CONDITION by HE Wei, LI GuiFeng

“…Combined with the generalized “initial parameter method” and its boundary conditions, the analytical solution of the double-layer beam displacement and stress were obtained under the vehicle load. Through calculation examples, the displacement and stress of the rail and concrete slab were analyzed, and the analytical results were compared with the results of ANSYS, which proved the reliability of the analytical solution. …”
Get full text

Steering Parameters for Rock Grouting by Gunnar Gustafson, Johan Claesson, Åsa Fransson

“…Based on the flow equations for a Bingham fluid, the penetration of grout as a function of grouting time is calculated. This shows that the time scale of grouting in a borehole is only determined by grouting overpressure and the rheological properties of the grout, thus parameters that the grouter can choose. …”
Get full text

Finite Element Analysis of the Drive Axle Housing of Heavy Duty Wide Dump Truck based on Large Waveform of Axle Excitation by Wang Liping, Xu Qingxiang

“…Under the wide dump truck drive axle housing finite element model is introduced to the collected spectral large waveform axle excitation road data,which can further improve the fit degree calculation and analysis under the environment of virtual prototype with the actual environment,and also can provide a reference for the follow- up of virtual prototype environment design,analysis and modification of drive axle housing.…”
Get full text

PSYCHOLOGY OF CONSUMER CHOICE AND ITS INFLUENCE ON PRICING IN MARKET CONDITIONS by I. L. Goncharov, O. A. Gorelova

“…Knowing all these nuances and skilful use of them, manufacturers have the opportunity significantly facilitate the pricing process for their goods and make a more accurate calculation of the “fair” price, which will not alienate the consumer. …”
Get full text

Studies of the Selective Removal of Microquantities of Platinum(IV) Ions from Model Chloride Solutions onto Ion Exchangers Containing Functional Tertiary Amine and Polyamine Groups by Z. Hubicki, G. Wójcik

“…In addition, the weight and volume distribution coefficients, the number of theoretical plates as well as the working ion-exchange capacities were calculated from the Pt(IV) ion breakthrough curves. …”
Get full text

Clustering Algorithm for Urban Taxi Carpooling Vehicle Based on Data Field Energy by Xiao Qiang, Yao Shuang-Shuang

“…The data field energy function is used to calculate the field energy of each data point in the passenger taxi offpoint dataset. …”
Get full text

Inverse Method on Volume Utilization Factors of Rotor based on Average Theoretical Flow of Roots Pump by Ronghe Xiao, Yulong Li

“…It provides a new idea and method for calculating the volume utilization coefficient and other profile characteristics of rotor pump.…”
Get full text

New Bouguer Gravity Maps of Venezuela: Representation and Analysis of Free-Air and Bouguer Anomalies with Emphasis on Spectral Analyses and Elastic Thickness by Javier Sanchez-Rojas

“…Gravity was measured in reference to the International Gravity Standardization Net 1971, and the complete Bouguer anomaly was calculated by using the Geodetic Reference System 1980 and 2.67 Mg/m3. …”
Get full text

Heavy-duty Casting Robot Trajectory Planning Based on the Law of Composite Polynomial Motion by Wang Chengjun, Yang Lin, Li Long, Shen Yuzhe

“…The degree-of-freedom of the actuator is calculated by the topological structure theory of the robot mechanism, and the position of the parallel mechanism is solved by the closed-loop vector method, the kinematic position equation of the hybrid mechanism is derived according to the equivalent method and the geometric method. …”
Get full text

Numerical Simulation to Air Pollution Emission Control near an Industrial Zone by Pravitra Oyjinda, Nopparat Pochai

“…The air pollutant concentration is approximated by using an explicit finite difference technique. The solutions of calculated air pollutant concentration in each controlled and uncontrolled point source at the monitoring points are compared. …”
Get full text

Re-evaluation of Underflow Energy Dissipation Effect Based on AHP-fuzzy Comprehensive Evaluation Method by LIU Jialin, QIU Yong, ZHOU Xinyu, PU Jinbing, JIANG Yujia

“…The effects of current underflow energy dissipation are basically evaluated by a single indicator (energy dissipation rate) based on engineering safety.To better adapt to the construction needs of ecological water conservancy,this paper comprehensively analyzes all relevant factors of underflow energy dissipation and conducts the qualitative and quantitative analysis of multiple indicators by the application of hierarchical analysis and fuzzy comprehensive evaluation.It sets two criterion layers of main characteristic indicators (energy loss,aeration concentration of water body after energy dissipation,fluctuation pressure,and tail water flow pattern) and minor characteristic indexes (anti-impact flow velocity of downstream,Froude number of pre-jump section, and inundation degree).Then,it calculates the corresponding weights and degree of membership respectively to obtain the re-evaluation result of the energy dissipation effect of a grid underflow energy dissipater being 83.3 points (B grade).The results show that the comprehensive evaluation based on multiple factors can better take into account the ecological requirements and other influencing factors of the downstream river on the premise of meeting engineering safety.…”
Get full text

Secure transmission for NOMA downlink based on short packet communication by Gangcan SUN, Shaoke ZHAO, Wanming HAO, Zhengyu ZHU

“…For the low-latency requirements of Internet of things (IoT) business, short packet communication (SPC) and non-orthogonal multiple access (NOMA) were combined to study the problem of secure transmission in the multi-user NOMA system with eavesdroppers.With the maximizing the secure throughput of weak uses as the objective, considering the user decoding error probability constraint, total power constraint and power allocation constraint, a low-complexity power allocation algorithm was proposed to realize secure transmission.In order to solve the problem caused by complex objective function formula and unreliable serial interference cancellation (SIC) technology, the proof that the compactness of the constraints was necessary to find the optimal solution.Under the constraint of maximum decoding error probability, the power constraint was transformed and calculated to obtain the strict limit of transmitting power for strong users, and the transmit power search set from base station to strong user was derived.Then, the one-dimensional search algorithm was used to allocate power resources to maximize the throughput of weak users.Simulation results prove that the proposed algorithm can effectively improve the security throughput of weak users in the system.…”
Get full text

Antibiotic residuals removal via novel fabricated hydrogel from 2-hydroxyethyl methacrylate and sodium methacrylate by Nahit Aktaş, Sinan Akgöl, Urmat Zholdoshbek Uulu

“…Synthesized hydrogels were characterized by different methods such as Fourier-transform infrared spectroscopy (FTIR), elemental and scanning electron microscope (SEM), and surface area calculations. The average size surface area of the synthesized hydrogels were 1.515 µm. …”
Get full text

Utility of pattern-based approach to skin biopsies in pediatric non-infectious inflammatory diseases: a review of 140 cases by Neha Singh, Suravi Mohanty, Rajalakshmi Tirumalae

“…The clinical differential diagnoses were compared with histopathologic diagnoses; concordance and discordance were calculated. Results Of the 140 patients, histopathologic diagnoses of 109 (77.9%) patients were concordant with the clinical diagnoses, whereas 23 (16.4%) showed discordance, among which 18 (78.3%) showed major discordance, while the remaining five (21.7%) cases had minor discordance. …”
Get full text

Application Effect Analysis of the Mie Scattering Theory Based on Big Data Analysis Technology in the Optical Scattering Direction by Suting Chen

“…Under the assumed mathematical model of bubble group scattering, the scattered light intensity of wake can be measured experimentally, and then, the velocity, diameter, and density distribution of the bubble group can be calculated by using the mathematical inversion algorithm. …”
Get full text

Analysis of a High-Dimensional Mathematical Model for Plant Virus Transmission with Continuous and Impulsive Roguing Control by Guangming Qiu, Sanyi Tang, Mengqi He

“…Furthermore, the model with impulsive roguing control tactics is proposed, and the existence and stability of the plant-only and disease-free periodic solutions of the model are investigated by calculating several threshold values. Moreover, when selecting the design control strategy to minimize the threshold, we systematically analyze the existence of the optimal times of roguing infected plants within a replanting cycle, which is of great significance to the design and optimization of the prevention and control strategy of plant virus transmission. …”
Get full text

Thermodynamic properties in ternary system of NHHCO–HO–ethanol based on antisolvent method to strengthen crystallization of carbonized ammonia by Yu Zhang, Dongdong Feng, Jianmin Gao, Qian Du, Shaohua Wu

“…The dissolution heat was also calculated in the end. The research of this article has a guiding significance for the antisolvent method to strengthen the crystallization of carbonized ammonia of ammonia-based carbon capture technology. …”
Get full text

Multiaxial fatigue of in-service aluminium longerons for helicopter rotor-blades by A. Shanyavskiy, A. Toushentsov

“…Complicated case of in-service blades multiaxial cyclically bending-rotating and tension can be considered based on introduced earlier master curve constructed for aluminum alloys in the simple case of uniaxial tension with stress R-ratio near to zero. Calculated equivalent tensile stress was compared for different blade sections and it was shown that in-service blades experienced not principle difference in this value in the crack growth direction by the investigated sections. …”
Get full text

A Novel Methodology for Estimating the Capacity and Level of Service for the New Mega Elliptical Roundabout Intersection by Ahmed I. Z. Mohamed, Yusheng Ci, Yiqiu Tan

“…Thus, the purpose of this study is to analyze the traffic operation performance and propose a methodology for calculating the capacity of mega elliptical roundabout and also the level of service by gap acceptance theory. …”
Get full text

Influencing Factors of University Core Competence: An Empirical Study Based on the Entropy Weight Gray Relation Model by Yongqing Shi, Xiaojiang Yang

“…To measure the gray relation between the core competence of research universities and its influencing factors, this paper took the same period statistical data of the five research universities directly subordinate to the Ministry of Education of China as the research samples, all these five schools were shortlisted in the “World Top 300” rankings of USNews, QS, THE, and ARWU from 2014 to 2018, and the indicator systems of the four authoritative lists were taken as the basis; 30 representative indicators affecting the core competence of research universities were selected, and the gray relation model was adopted for the research; moreover, this paper applied the information entropy method to calculate the weight of each indicator and estimate the comprehensive gray relation between the core competence of research universities and the entire factor system. …”
Get full text