Quantitative Studies of Low Impact Development Literaturein China by SUN Shiqin, HOU Jingwei

“…In the perspective of core journals, and master's and doctoral theses, and based onthe literature about low impact development (LID)retrieved from the China National KnowledgeInfrastructure (CNKI), this paper analyzes the annual publication trends, source journals, topicdistributions,number of citation and keyword clustering of literature, and discusses the rules andtrend of quantitative research on LID in China by the methods of socioeconomics, ecology,mathematical modeling, and systematics & spatial optimization.The results show that: The quantityof literature about the LID since 2009 increases rapidly in China, with wider researchperspectives, larger research scales, deeper research goals, and better research system.Modelsand methods are diversified, but there are some shortcomings such as rely too much on models, andlimitations to scheme diversification. …”
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Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge by WANG Shangjin, QIU Yong, YANG Zewen, JIAO Xuan, ZHOU Xinyu

“…Based on the existing test research results, combined with the phenomenon that theflow pattern gradually transfers from thin-walled weir flow to vacuum practical weir flow withthe increase of flow rate, this paper compares and analyzes the change of flow coefficient of W-type labyrinth weir, carries out the mathematical regression analysis on the test data by Originsoftware, gives the fitting formula of the length of the overflow leading edge of labyrinth weirdecreasing with the increase of the water head of the weir,and on this basis, obtains the fittingformulas of flow capacity of W-type and V-type labyrinth weirs based on the length change ofoverflow leading edge. …”
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A model-free method to learn multiple skills in parallel on modular robots by Fuda van Diggelen, Nicolas Cambier, Eliseo Ferrante, A. E. Eiben

“…The novelty of our approach, underpinned by a mathematical analysis of the controller model, is to search for good initial states, instead of optimising connection weights. …”
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Performance of Variable Negative Stiffness MRE Vibration Isolation System by Run-pu Li, Cheng-bin Du, Fei Guo, Guo-jun Yu, Xiao-guo Lin

“…The relationship between the negative stiffness and the performance of the device is obtained by mathematical transformation. Its vibration response under simple harmonic excitation at small amplitude and the impact of the volume fraction of soft magnetic particles on the isolation system are also analyzed. …”
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An Improved MPPT Algorithm for PV Generation Applications Based on P-U Curve Reconstitution by Yaoqiang Wang, Meiling Zhang, Xian Cheng

“…In order to solve this problem, this paper takes MPPT as the main research object, and an improved MPPT algorithm for PV generation applications based on P-U curve reconstitution is proposed. Firstly, the mathematical model of PV array is presented, and then the output dynamic characteristics are analyzed. …”
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Analysis of the n-Term Klein-Gordon Equations in Cantor Sets by Nikhil Sharma, Sunil Joshi, Pranay Goswami

“…The proposed method, along with the existence of the solutions demonstrated through some examples, provides a powerful mathematical means in solving fractional linear differential equations. …”
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Circular Antenna Array Synthesis Using Multiverse Optimizer by Ahmet Emre Taser, Kerim Guney, Erhan Kurt

“…Since achieving a desired antenna radiation pattern is a mathematical problem, in the literature, there are various optimization algorithms applied to the synthesis process of different kinds of antenna arrays. …”
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DESIGN AND TEST OF A MULTI-DIMENSIONAL MICRO-VIBRATION SIMULATOR by WANG Bing, XU ZhenBang, YANG JianFeng, WANG XiaoMing, WU QingWen

“…To simulate the micro-vibration of the space platform such as satellites,space stations and so on,a multidimensional micro-vibration simulator based on the Gough-Stewart configuration was designed.Firstly,the structural design of the multi-dimensional micro-vibration simulator was introduced.The theoretical model of the simulator is established by NewtonEuler’s method.In this model,the situation of misalignment between the origin of the relative reference frame and the barycenter of upper platform and load was considered.Combining with the principle of virtual work,the equations of the natural frequencies and mode shapes could be gained.Secondly,the modal of the simulator was analyzed by the finite element method and the analytical method.The first six natural frequencies and the modal shapes were obtained.The maximum error of FEA simulation is4.17% compared with the mathematical analytical solution.Finally,a prototype of the micro-vibration simulator was manufactured and its performance was testing.The test results indicate that the effective operating frequency of the simulator is up to 100 Hz,meeting the need of the vibration test.…”
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Numerical Analyses of Static Characteristics of Liquid Annular Seals Based on 2D LBM-LES Model by Zhenjie Zhang, Lulu Zhai, Jia Guo, Zuchao Zhu, Guoyou Chen

“…In this paper, a two-dimensional (2D) mathematical model for predicting the leakage flow rates and static characteristics of liquid seal is established, based on the lattice Boltzmann method (LBM) combined with the D2G9 velocity model for incompressible fluid and large eddy simulation (LES) turbulence model, in which the transformation equation of reference pressure is developed with the Bernoulli equation. …”
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Colombian monthly energy inflows predictability by Andrés Felipe Hurtado-Montoya, Nicolás Alberto Moreno-Reyes

“…Furthermore, high water-dependent sectors such as the Colombian electricity market, require not only the expected streamflow values but also the occurrence probability or reliability bands of such forecast inflows necessary in robust risk analyses. We propose a mathematical approach for monthly streamflow forecasting in Colombia and quantify its predictability, incorporating climate model outcomes as a time series of macroclimatic indexes and punctual hydro-climatological stations. …”
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Design Defect Analysis of N-Lobed Non-circular Bevel Gear by Liu Qinqin, Lü Gang

“…The bevel gear with spherical involute is considered as generating cutter of NCBGs tooth profile,and mathematical models between pitch surface of bevel gear cutter and that of NCBGs are established. …”
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Diagnostics of heat exchange equipment on basis of operating parameters of diesel fuel hydrotreating unit by A. М. Demin, A. P. Naumenko

“…According to the results of calculations on a mathematical model of a typical hydrotreating unit using a real-time diagnostic program based on monitoring operational parameters, the criterion for assessing the state of the reactor unit heat exchanger increases from 1 to 1.37 with an increase in the annulus pollution coefficient. …”
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A mixed-integer linear programming model for scheduling volunteers in technical support teams in Non-Governmental Organizations by Valdir Soares Silva Neto, Ricardo Lukas de Medeiros França, Keren Karolyne Nóbrega Silva, Luciano Carlos Azevedo da Costa, Hugo Harry F. R. Kramer

“…To solve the problem, a mathematical model is proposed whose objective is to allocate volunteers to tasks for which they have the greatest ability. …”
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AMTD:a way of adaptive moving target defense by Danjun LIU, Guilin CAI, Baosheng WANG

“…Moving target defense is a new way to change the asymmetry state between attack and defense,by dynamically moving target’s attacking surface.Frequency conversion of MTD is of great importance for the weighing between usability,security and defense cost.Nowadays,however,frequency conversion is usually determined by manager’s experience,which cannot create a balance between usability and security cost for the lack of theory basis.An adaptive moving target defense framework(AMTD)was proposed.AMTD can maximize system security at the lowest cost while ensuring that the system is available.The adaptability of AMTD has two modes.Firstly,the defense mode,it contains an adaptive conversion strategy to provide reacting defense triggered by security alerts and active defense triggered by timer expiration events.The other mode is the frequency conversion,which obtain the optimal conversion frequency by establishing mathematical models.Four series of simulation experiments were taken to verify the effectiveness of the solution.…”
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Influence of the Correction of Cycloid Tooth Bevel Gear Cutter Head Radius on the Tooth Surface Contact Performance by Han Zhengyang, Deng Xiaozhong, Nie Shaowu, Geng Longlong

“…Aiming at the selection of parameter of the cycloid bevel gear cutter,the influence of radial correction of cutter on the tooth surface contact is studied. The mathematical model of cycloid bevel gears is established based on the cutter head and the formation principles of production gears. …”
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Research on Characteristic of Hydrodynamic Bearing with the Surface Micro-pit by Shaolin Zhang, Lingxue Li, Boqian Xia

“…Taking the hydrodynamic bearing with surface micro-pits as the research object， a mathematical model of oil film characteristics is established based on the flow balance of the micro-pits， and the static and dynamic characteristics and stability parameters of the bearing are obtained with the depth and area of the micro-pits. …”
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Analytical Calculation of Air-gap Magnetic Field and Torque of Triple-shaft Ring-plate Magnet Gears by Liu Dongning, Ge Yanjun, Yang Junyue, Wang Daming

“…In this research, the mathematical and physical model of the air-gap magnetic field for the triple-shaft ring-plate magnet gear (TRMG) is obtained by means of the scalar magnetic potential method, and the air-gap magnetic field between inner and outer permanent magnet rings and its corresponding electromagnetic torque model are established according to the principle of the magnetic field superposition. …”
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Research of the Characteristic of Hydro- viscous Clutch with Different Friction Materials by Ma Ligang, Xiang Changle, Du Minggang, Guo Liuyang

“…The friction plate gap as a key parameter which affects the towing torque is got by analyzing friction state of the hydro- viscous clutch and building mathematical model of the towing torque which combines with the specific parameter of the hydro- viscous clutch. …”
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Research of the CNC Side Milling Method for ZC3 Worm Gear by Hu Yangjing, Huang Xiaotiao, Fang Chenggang, Zhang Hu

“…In order to improve the precision of CNC machining ZC3 worm gear,a side milling method for machining worm gear is proposed. Firstly,the mathematical model for milling ZC3 worm gear is established based on the principle of gear meshing. …”
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An Improved Genetic Algorithm Based Robust Approach for Stochastic Dynamic Facility Layout Problem by Yunfang Peng, Tian Zeng, Lingzhi Fan, Yajuan Han, Beixin Xia

“…Mont Carlo simulation method is used to randomly generate different scenarios. A mathematical model is established to describe the dynamic facility layout problem with the consideration of transport device assignment. …”
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