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Journal articles on the topic 'Deterministic controlled processes'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Goreac, Dan, and Oana-Silvia Serea. "Abel-type Results for Controlled Piecewise Deterministic Markov Processes." Differential Equations and Dynamical Systems 25, no. 1 (2015): 83–100. http://dx.doi.org/10.1007/s12591-015-0245-y.

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Pang, Guodong, and Martin V. Day. "Fluid Limits of Optimally Controlled Queueing Networks." Journal of Applied Mathematics and Stochastic Analysis 2007 (August 21, 2007): 1–19. http://dx.doi.org/10.1155/2007/68958.

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We consider a class of queueing processes represented by a Skorokhod problem coupled with a controlled point process. Posing a discounted control problem for such processes, we show that the optimal value functions converge, in the fluid limit, to the value of an analogous deterministic control problem for fluid processes.

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Goreac, Dan, and Oana-Silvia Serea. "Linearization Techniques for Controlled Piecewise Deterministic Markov Processes; Application to Zubov’s Method." Applied Mathematics & Optimization 66, no. 2 (2012): 209–38. http://dx.doi.org/10.1007/s00245-012-9169-x.

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Asteasuain, Mariano. "Deterministic Approaches for Simulation of Nitroxide-Mediated Radical Polymerization." International Journal of Polymer Science 2018 (August 9, 2018): 1–16. http://dx.doi.org/10.1155/2018/7803702.

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Since its development in the last decades, controlled radical polymerization (CRP) has become a very promising option for the synthesis of polymers with controlled structure. The design and production of tailor-made materials can be significantly improved by developing models capable of predicting the polymer properties from the operating conditions. Nitroxide-mediated polymerization (NMP) was the first of the three main variants of CRP to be discovered. Although it has lost preference over the years against other CRP alternatives, NMP is still an attractive synthesis method because of its sim

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Zhang, Yi. "Average Optimality for Continuous-Time Markov Decision Processes Under Weak Continuity Conditions." Journal of Applied Probability 51, no. 4 (2014): 954–70. http://dx.doi.org/10.1239/jap/1421763321.

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This paper considers the average optimality for a continuous-time Markov decision process in Borel state and action spaces, and with an arbitrarily unbounded nonnegative cost rate. The existence of a deterministic stationary optimal policy is proved under the conditions that allow the following; the controlled process can be explosive, the transition rates are weakly continuous, and the multifunction defining the admissible action spaces can be neither compact-valued nor upper semicontinuous.

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Zhang, Yi. "Average Optimality for Continuous-Time Markov Decision Processes Under Weak Continuity Conditions." Journal of Applied Probability 51, no. 04 (2014): 954–70. http://dx.doi.org/10.1017/s0021900200011918.

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This paper considers the average optimality for a continuous-time Markov decision process in Borel state and action spaces, and with an arbitrarily unbounded nonnegative cost rate. The existence of a deterministic stationary optimal policy is proved under the conditions that allow the following; the controlled process can be explosive, the transition rates are weakly continuous, and the multifunction defining the admissible action spaces can be neither compact-valued nor upper semicontinuous.

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Goreac, Dan. "Viability, invariance and reachability for controlled piecewise deterministic Markov processes associated to gene networks." ESAIM: Control, Optimisation and Calculus of Variations 18, no. 2 (2011): 401–26. http://dx.doi.org/10.1051/cocv/2010103.

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DEMIDOVA, A. V., O. V. DRUZHININA, O. N. MASINA, and A. A. PETROV. "DEVELOPMENT OF ALGORITHMS AND SOFTWARE FOR MODELING CONTROLLED DYMAMIC SYSTEMS USING SYMBOLIC COMPUTATIONS AND STOCHASTIC METHODS." Программирование, no. 2 (March 1, 2023): 54–68. http://dx.doi.org/10.31857/s0132347423020085.

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The development of software for synthesizing and analyzing models of controlled systems taking into account their deterministic and stochastic description is an important direction of research. Results of the development of software for modeling dynamic systems the behavior of which can be described by onestep processes are presented. Models of population dynamics are considered as an example. The software uses a deterministic description of the model at its input to obtain a corresponding stochastic model in symbolic form and also analyze the model in detail (calculate trajectories in the det

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Yushkevich, A. A. "Verification Theorems for Markov Decision Processes with Controlled Deterministic Drift and Gradual and Impulsive Controls." Theory of Probability & Its Applications 34, no. 3 (1990): 474–96. http://dx.doi.org/10.1137/1134055.

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Niederdorfer, Robert, Lisa Fragner, Ling Yuan, et al. "Distinct growth stages controlled by the interplay of deterministic and stochastic processes in functional anammox biofilms." Water Research 200 (July 2021): 117225. http://dx.doi.org/10.1016/j.watres.2021.117225.

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Yushkevich, A. A. "Addendum: Verification Theorems for Markov Decision Processes with Controlled Deterministic Shift, and Gradual and Impulse Controls." Theory of Probability & Its Applications 35, no. 1 (1991): 192. http://dx.doi.org/10.1137/1135025.

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Chen, Guogui, Wenqing Wang, Yi Liu, et al. "Uncovering the relative influences of space and environment in shaping the biogeographic patterns of mangrove mollusk diversity." ICES Journal of Marine Science 77, no. 1 (2019): 30–39. http://dx.doi.org/10.1093/icesjms/fsz204.

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Abstract Determining the relative importance of ecological processes regulating the biogeographic patterns of marine species, especially with respect to α- and β-diversity in multi-habitat communities, is a central goal in marine ecology. We explored the relative contribution of spatial (stochastic processes) and environmental factors (deterministic processes) to the biogeographic patterns of the α- and β-diversity of mangrove mollusks. A total of 16 mangrove areas were sampled in southeast coast China from 18°N to 28°N latitude. The highest mean α-diversity was found at 20°N and that of β-div

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Pan, Ri, Wei Yang, Yin Biao Guo, Feng Yang, and Dong Xu Zhang. "Research on the Optimized Tool-Path Planning of Computer Controlled Optical Surfacing." Advanced Materials Research 399-401 (November 2011): 1763–67. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1763.

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Computer controlled optical surfacing (CCOS) is widely used in aspheric optical lenses fabrication because of their high convergence rate on surface based on deterministic removal processes since 1963. As an important part of CCOS techniques, reasonable tool-path would increase the polishing speed, decrease the processing time and then improve the efficiency of polishing. Optimized policy combined with improved Prim algorithm is presented in this paper based on the study of the characteristic of aspheric polishing and the tool-paths in common use. The simulated results show that the length of

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Osler, Shay, and Timothy Sands. "Controlling Remotely Operated Vehicles with Deterministic Artificial Intelligence." Applied Sciences 12, no. 6 (2022): 2810. http://dx.doi.org/10.3390/app12062810.

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Unmanned ocean vehicles can be guided and controlled autonomously or remotely, and even remote operation can be automated significantly. Classical methods use trajectory tracking errors in negative feedback. Recently published methods are proposed instead. Deterministic (non-stochastic) artificial intelligence (DAI) combines optimal learning with an asserted self awareness statement in the form of the governing mathematical model (based on physics in this instantiation) to allow control that can be alternatively adaptive (i.e., capable of reacting to changing system dynamics) or learning (i.e.

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Arif Mammadov, Arif Mammadov, Nizami Ismayilov Nizami Ismayilov, Mukhtar Huseynov Mukhtar Huseynov, and Faiq Guliyev Faiq Guliyev. "SOME ASPECTS OF MATHEMATICAL MODELING OF ELECTRIC STEEL MELTING PROCESS." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 14, no. 03 (2022): 04–12. http://dx.doi.org/10.36962/pahtei14032022-04.

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The article discusses some aspects of mathematical modeling of the process of melting electric steel on the basis of innovative metallurgical technologies. It was noted that the production of electric steel mainly consists of three stages - preparation of the charge, melting and casting of liquid steel. The most important of these stages is the mathematical modeling of the melting process, especially the physicochemical processes that take place during melting. All physicochemical processes controlled in order to obtain the required chemical composition of electric steel for modeling are combi

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Chen, Rongzhi, Jing Zhu, Lan Jiang, et al. "Soil Phosphorus Availability Controls Deterministic and Stochastic Processes of Soil Microbial Community along an Elevational Gradient in Subtropical Forests." Forests 14, no. 7 (2023): 1475. http://dx.doi.org/10.3390/f14071475.

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Revealing the assembly mechanisms of the soil microbial community, which is crucial to comprehend microbial biodiversity, is a central focus in ecology. The distribution patterns of microbial elevational diversity have been extensively studied, but their assembly processes and drivers remain unclear. Therefore, it is essential to unravel the relationship between the deterministic and stochastic processes of the microbial community assembly and elevational gradients. Here, our study built upon previous physicochemical analyses of soil samples collected along an elevational gradient (900–1500 m)

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Peña, Tara, Aditya Dey, Shoieb A. Chowdhury, et al. "Moiré engineering in 2D heterostructures with process-induced strain." Applied Physics Letters 122, no. 14 (2023): 143101. http://dx.doi.org/10.1063/5.0142406.

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We report deterministic control over a moiré superlattice interference pattern in twisted bilayer graphene by implementing designable device-level heterostrain with process-induced strain engineering, a widely used technique in industrial silicon nanofabrication processes. By depositing stressed thin films onto our twisted bilayer graphene samples, heterostrain magnitude and strain directionality can be controlled by stressor film force (film stress × film thickness) and patterned stressor geometry, respectively. We examine strain and moiré interference with Raman spectroscopy through in-plane

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Evseev, A. V., I. A. Yuraskova, D. A. Karpilov, and Ya A. Cherkaev. "AUTOMATED PRODUCTION AND QUALITY CONTROL OF COMPOSITES PRODUCED ON NON-MIXING MACHINES USING CONTROLLED UNIFORMITY METHODS." DYNAMICS OF SYSTEMS, MECHANISMS AND MACHINES 12, no. 3 (2024): 35–43. https://doi.org/10.25206/2310-9793-2024-12-3-35-43.

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The paper considers the issues of synthesis of heterogeneous compositions for various purposes by the proposed methods of controlled uniformity to ensure significantly higher quality indicators of composites compared with materials produced by typed methods. The research was carried out on a new class of machines – nonmixers, consisting of continuous and discrete flows of components. A comprehensive comparative analysis of the results of modeling the proposed nonmixing processes with the results of their practical implementation was also carried out. It has been experimentally proved that the

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19

Liu, Wenxin, Shengqian Guo, Huiping Zhang, Yun Chen, Yizhen Shao, and Zhiliang Yuan. "Effect of Altitude Gradients on the Spatial Distribution Mechanism of Soil Bacteria in Temperate Deciduous Broad-Leaved Forests." Microorganisms 12, no. 6 (2024): 1034. http://dx.doi.org/10.3390/microorganisms12061034.

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Soil bacteria are an important part of the forest ecosystem, and they play a crucial role in driving energy flow and material circulation. Currently, many uncertainties remain about how the composition and distribution patterns of bacterial communities change along altitude gradients, especially in forest ecosystems with strong altitude gradients in climate, vegetation, and soil properties. Based on dynamic site monitoring of the Baiyun Mountain Forest National Park (33°38′–33°42′ N, 111°47′–111°51′ E), this study used Illumina technology to sequence 120 soil samples at the site and explored t

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Terets, A. D., V. A. Mashira, and T. Ye Korochkova. "Ratchet effect modeling by method of paradoxical games for stochastic fluctuations of double-well potential." Himia, Fizika ta Tehnologia Poverhni 13, no. 3 (2022): 338–48. http://dx.doi.org/10.15407/hftp13.03.338.

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The ratchet effect is a directed nanoparticle flux phenomenon induced by nonequilibrium fluctuations in a system with spatial and (or) temporal asymmetry. One is used as the way to create a controlled nanotransport and is the basis of the theory of Brownian motors. Fluctuation motion simulation is a promising way to calculate the main characteristics of Brownian motors, it avoids complex calculations and quickly obtains predictions about the appearance or absence of generated directional motion in a specific model. Nonequilibrium fluctuations are usually introduced into the system by a dichoto

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21

Pullen, Weslin C., Tianyi Wang, Heejoo Choi, et al. "Statistical Tool Size Study for Computer-Controlled Optical Surfacing." Photonics 10, no. 3 (2023): 286. http://dx.doi.org/10.3390/photonics10030286.

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Over the past few decades, computer-controlled optical surfacing (CCOS) systems have become more deterministic. A target surface profile can be predictably achieved with a combination of tools of different sizes. However, deciding the optimal set of tool sizes that will achieve the target residual error in the shortest run time is difficult, and no general guidance has been proposed in the literature. In this paper, we present a computer-assisted study on choosing the proper tool size for a given surface error map. First, we propose that the characteristic frequency ratio (CFR) can be used as

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22

Chuang, John S., Zak Frentz, and Stanislas Leibler. "Homeorhesis and ecological succession quantified in synthetic microbial ecosystems." Proceedings of the National Academy of Sciences 116, no. 30 (2019): 14852–61. http://dx.doi.org/10.1073/pnas.1901055116.

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The dynamics of ecological change following a major perturbation, known as succession, are influenced by random processes. Direct quantitation of the degree of contingency in succession requires chronological study of replicate ecosystems. We previously found that population dynamics in carefully controlled, replicated synthetic microbial ecosystems were strongly deterministic over several months. Here, we present simplified, two-species microbial ecosystems consisting of algae and ciliates, imaged in toto at single-cell resolution with fluorescence microscopy over a period of 1 to 2 weeks. To

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23

Han, Mingxian, Huiying Yu, Jianrong Huang, et al. "Limited Microbial Contribution in Salt Lake Sediment and Water to Each Other’s Microbial Communities." Microorganisms 12, no. 12 (2024): 2534. https://doi.org/10.3390/microorganisms12122534.

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Climate change and human activities have led to frequent exchanges of sedimentary and aquatic microorganisms in lakes. However, the ability of these microorganisms to survive in their respective habitats between saline lake sediment and water remains unclear. In this study, we investigated microbial sources and community composition and metabolic functions in sediments and water in Yuncheng Salt Lake using a combination of source tracking and Illumina MiSeq sequencing. The results showed that 0.10–8.47% of the microbial communities in the sediment came from the corresponding water bodies, whil

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24

Jura, Jolanta, Paulina Wegrzyn, Jacek Jura, and Aleksander Koj. "Regulatory mechanisms of gene expression: complexity with elements of deterministic chaos." Acta Biochimica Polonica 53, no. 1 (2006): 1–9. http://dx.doi.org/10.18388/abp.2006_3359.

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Linear models based on proportionality between variables have been commonly applied in biology and medicine but in many cases they do not describe correctly the complex relationships of living organisms and now are being replaced by nonlinear theories of deterministic chaos. Recent advances in molecular biology and genome sequencing may lead to a simplistic view that all life processes in a cell, or in the whole organism, are strictly and in a linear fashion controlled by genes. In reality, the existing phenotype arises from a complex interaction of the genome and various environmental factors

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25

Nevliudov, Igor, Nikolaj Starodubcev, Hennadii Makarenko, Matvii Bilousov, Serhii Shybanov, and Yusifov Ramal. "Development of a model of the process of development of manufacturing defects in automation means." INNOVATIVE TECHNOLOGIES AND SCIENTIFIC SOLUTIONS FOR INDUSTRIES, no. 3 (29) (September 30, 2024): 48–56. http://dx.doi.org/10.30837/2522-9818.2024.3.048.

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In automated process control systems, automation equipment (sensors, converters, amplifiers, etc.) with technical defects arising during their manufacture, which are one of the main causes of failures, is widely used. The paper establishes the possibility of using the laws of nonequilibrium thermodynamics as the basis for determining the relationship between the controlled parameters of automation equipment and the parameters of the displayed medium, which made it possible to build a deterministic model of the development of production defects and, ultimately, determine the directions for chan

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Montes Rivera, Martín, Ernesto Olvera-Gonzalez, and Nivia Escalante-Garcia. "UPAFuzzySystems: A Python Library for Control and Simulation with Fuzzy Inference Systems." Machines 11, no. 5 (2023): 572. http://dx.doi.org/10.3390/machines11050572.

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The main goal of control theory is input tracking or system stabilization. Different feedback-computed controlled systems exist in this area, from deterministic to soft methods. Some examples of deterministic methods are Proportional (P), Proportional Integral (PI), Proportional Derivative (PD), Proportional Integral Derivative (PID), Linear Quadratic (LQ), Linear Quadratic Gaussian (LQG), State Feedback (SF), Adaptative Regulators, and others. Alternatively, Fuzzy Inference Systems (FISs) are soft-computing methods that allow using the human expertise in logic in IF–THEN rules. The fuzzy cont

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Xuyu, Shen, Sun Gongwu, Mao Ying, Hu Xuanyu, and Chu Zhenzhong. "Gaussian Process-Based Model Predictive Control for Autonomous Underwater Vehicles." Journal of Physics: Conference Series 2718, no. 1 (2024): 012063. http://dx.doi.org/10.1088/1742-6596/2718/1/012063.

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Abstract Traditional MPC algorithms, assuming constant values, suffer from performance degradation caused by model mismatch. This paper addresses the enhancement of predictability in Autonomous Underwater Vehicles (AUVs) under uncertain disturbances and unknown system dynamics through the design of Model Predictive Controllers (MPCs). We propose a hybrid model that integrates a first-principles nominal model with a learning-based model utilizing Gaussian Processes (GPs). The algorithm addresses the problem of model mismatch in AUV motion control by constructing a precise GP model, which captur

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Wang, Xiaobing, Xiaozhou Xia, Xue Zhang, Xin Gu, and Qing Zhang. "Probabilistic Risk Assessment of Soil Slope Stability Subjected to Water Drawdown by Finite Element Limit Analysis." Applied Sciences 12, no. 20 (2022): 10282. http://dx.doi.org/10.3390/app122010282.

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This study investigates the probabilistic stability of embankment slopes subjected to water level drawdown using the random field finite element method (RFEM) with strength reduction technology. The shear strength of soil properties was controlled by cohesion and internal friction angle for the slope shear failure. The cohesion and internal friction angle were modeled by a random field following the log-normal distribution. The factor of safety (FOS) for the embankment slope with random soil is calculated by strength reduction technology. During the numerical simulation, the limit analysis upp

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Schmidt. "Physiology and Pathophysiology of Senescence." International Journal for Vitamin and Nutrition Research 69, no. 3 (1999): 150–53. http://dx.doi.org/10.1024/0300-9831.69.3.150.

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Average life-span and maximum life-span are the two basic parameters by which the processes of ageing and senescence of individuals of a species are characterized. Although each individual of a species if affected by both parameters can only be studied in populations of individuals. The survival curve of a cohort of individuals reflects the different influences of constitutional and environmental factors on life expectancy. The intrinsic molecular and cellular mechanisms by which the physiological process of ageing and senescence is controlled and regulated are far from being understood althou

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Grigoryeva, Lyudmila, James Louw, and Juan-Pablo Ortega. "Forecasting causal dynamics with universal reservoirs." Nonlinearity 38, no. 5 (2025): 055005. https://doi.org/10.1088/1361-6544/adc6e7.

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Abstract An iterated multistep forecasting scheme based on recurrent neural networks (RNNs) is proposed for the time series generated by causal chains with infinite memory. This forecasting strategy contains, as a particular case, the iterative prediction strategies for dynamical systems that are customary in reservoir computing. Explicit error bounds are obtained as a function of the forecasting horizon, functional and dynamical features of the specific RNN used, and the approximation error committed by it. In particular, the growth rate of the error is shown to be exponential and controlled

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31

Kuznietsov, Mykola, Olha Lysenko, and Oleksandr Melnyk. "OPTIMAL REGULATION OF LOCAL ENERGY SYSTEM WITH RENEWABLE ENERGY SOURCES." Bulletin of the National Technical University "KhPI". Series: Energy: Reliability and Energy Efficiency, no. 1 (2) (July 2, 2021): 52–61. http://dx.doi.org/10.20998/2224-0349.2021.01.08.

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The paper is devoted to solving the balancing problem in local power systems with renewable energy sources. For a power system optimization problem, whose operation depends on random weather factors, a convex parameter optimization or optimal control problem was solved using controlled generation, for each individual realization of a random process as a deterministic function, and then statistical processing of results over a set of random realizations was performed and distribution density functions of the desired target function were constructed, followed by estimation of expected values and

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Zhang, Lin, Chunlei Zhang, and Wei Fan. "Robotic Magnetorheological Finishing Technology Based on Constant Polishing Force Control." Applied Sciences 12, no. 8 (2022): 3737. http://dx.doi.org/10.3390/app12083737.

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The normal positioning error hinders the use of magnetorheological finishing (MRF) in robotic polishing. In this paper, the influence of robotic normal positioning error on the MRF removal rate is revealed, and a force-controlled end-effector for the robotic MRF process is presented. The developed end-effector is integrated into a six-axis industrial robot, and the robot positions the end-effector while the end-effector realizes the constant force control. A fused silicon mirror is polished, and the result shows that the proposed device effectively compensates for robotic normal positioning er

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33

Carpenter, Chris. "Stratigraphic Forward Modeling Assists Carbonate-Reservoir Characterization." Journal of Petroleum Technology 74, no. 09 (2022): 60–63. http://dx.doi.org/10.2118/0922-0060-jpt.

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_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 202775, “Application of Stratigraphic Forward Modeling to Carbonate-Reservoir Characterization: A New Paradigm From the Albion Research and Development Project,” by Jean Borgomano, Aix-Marseille University, and Gérard Massonnat and Cyprien Lanteaume, TotalEnergies, et al. The paper has not been peer reviewed. _ Improving carbonate-reservoir prediction, field development, and production forecasts, especially in zones lacking data, requires novel reservoir-modeling approaches, including process-bas

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Keppo, Jussi, A. Max Reppen, and H. Mete Soner. "Discrete Dividend Payments in Continuous Time." Mathematics of Operations Research 46, no. 3 (2021): 895–911. http://dx.doi.org/10.1287/moor.2020.1081.

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We propose a model in which dividend payments occur at regular, deterministic intervals in an otherwise continuous model. This contrasts traditional models where either the payment of continuous dividends is controlled or the dynamics are given by discrete time processes. Moreover, between two dividend payments, the structure allows for other types of control; we consider the possibility of equity issuance at any point in time. The value is characterized as the fixed point of an optimal control problem with periodic initial and terminal conditions. We prove the regularity and uniqueness of the

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Kayser, Jona, Carl F. Schreck, QinQin Yu, Matti Gralka, and Oskar Hallatschek. "Emergence of evolutionary driving forces in pattern-forming microbial populations." Philosophical Transactions of the Royal Society B: Biological Sciences 373, no. 1747 (2018): 20170106. http://dx.doi.org/10.1098/rstb.2017.0106.

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Evolutionary dynamics are controlled by a number of driving forces, such as natural selection, random genetic drift and dispersal. In this perspective article, we aim to emphasize that these forces act at the population level, and that it is a challenge to understand how they emerge from the stochastic and deterministic behaviour of individual cells. Even the most basic steric interactions between neighbouring cells can couple evolutionary outcomes of otherwise unrelated individuals, thereby weakening natural selection and enhancing random genetic drift. Using microbial examples of varying deg

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Tipei, Sever, Alan B. Craig, and Paul F. Rodriguez. "Using High-Performance Computers to Enable Collaborative and Interactive Composition with DISSCO." Multimodal Technologies and Interaction 5, no. 5 (2021): 24. http://dx.doi.org/10.3390/mti5050024.

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Composers do not usually collaborate with other composers but, for the last half century, open works were created that invite performers to implement details left undetermined or even decide the order in which various sections of the composition are to be played. Chance operations were also used in the writing of musical pieces and, in music generated with the assistance of computers, controlled randomness found its place. This article proposes a platform designed to encourage collaborative and interactive composition on high-performance computers with DISSCO (Digital Instrument for Sound Synt

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Martínez-León, Andrés Santiago, Sergey Jatsun, and Oksana Emelyanova. "Investigation of Wind Effects on UAV Adaptive PID Based MPC Control System." Enfoque UTE 15, no. 2 (2024): 36–47. https://doi.org/10.29019/enfoqueute.1032.

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In this paper, an assessment of the state of coastal territories of Ecuador monitoring issue is conducted. The use of an autonomous robotic aerial platform is proposed as a technical solution to enhance the efficiency of remote surveillance missions performed by national security services along coastline. Considering the UAV nonlinear flight dynamics, as well as the missing information of the environment, is designed a UAV hierarchical control structure composed of an adaptive PID based MPC control strategy. The implementation of an adaptive PID based MPC controller leads to significantly impr

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Aparicio, Yohan A., and Manuel Jimenez. "Mathematical Modeling of SOIC Package Dynamics in Dielectric Fluids during High-Voltage Insulation Testing." Applied Sciences 14, no. 9 (2024): 3693. http://dx.doi.org/10.3390/app14093693.

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The efficient testing and validation of the high-voltage (HV) insulation of small-outline integrated circuit (SOIC) packages presents numerous challenges when trying to achieve faster and more accurate processes. The complex behavior these packages when submerged in diverse physical media with varying densities requires a detailed analysis to understand the factors influencing their behavior. We propose a systematic and scalable mathematical model based on trapezoidal motion patterns and a deterministic analysis of hydrodynamic forces to predict SOIC package misalignment during automated high-

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Jiang, Han, Hongbin Zhang, Zhanyu Feng, Jian Zhang, Yu Qian, and Bo Wang. "A Multi-Objective Optimal Control Method for Navigating Connected and Automated Vehicles at Signalized Intersections Based on Reinforcement Learning." Applied Sciences 14, no. 7 (2024): 3124. http://dx.doi.org/10.3390/app14073124.

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The emergence and application of connected and automated vehicles (CAVs) have played a positive role in improving the efficiency of urban transportation and achieving sustainable development. To improve the traffic efficiency at signalized intersections in a connected environment while simultaneously reducing energy consumption and ensuring a more comfortable driving experience, this study investigates a flexible and real-time control method to navigate the CAVs at signalized intersections utilizing reinforcement learning (RL). Initially, control of CAVs at intersections is formulated as a Mar

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Monderer, D., and M. Tennenholtz. "Dynamic Non-Bayesian Decision Making." Journal of Artificial Intelligence Research 7 (November 1, 1997): 231–48. http://dx.doi.org/10.1613/jair.447.

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The model of a non-Bayesian agent who faces a repeated game with incomplete information against Nature is an appropriate tool for modeling general agent-environment interactions. In such a model the environment state (controlled by Nature) may change arbitrarily, and the feedback/reward function is initially unknown. The agent is not Bayesian, that is he does not form a prior probability neither on the state selection strategy of Nature, nor on his reward function. A policy for the agent is a function which assigns an action to every history of observations and actions. Two basic feedback stru

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Schneckenburger, Max, Luis Garcia, and Rainer Börret. "Machine learning robot polishing cell." EPJ Web of Conferences 215 (2019): 05002. http://dx.doi.org/10.1051/epjconf/201921505002.

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The quality of optical components such as lenses or mirrors can be described by shape errors and surface roughness. With increasing optic sizes, the stability of the polishing process becomes more and more important. Parameters such as chemical stability of the polishing slurry or tool wear are key elements for a deterministic computer controlled polishing (CCP) process. High sophisticated CCP processes such as magnetorheological finishing (MRF) or the zeeko bonnet polishing process rely on the stability of the relevant process parameters for the prediction of the desired material removal. The

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Cheng, H., H. Y. Tam, Y. Gao, Yong Bo Wu, and Y. Wang. "Wear Characteristics of the Sub-Aperture Tools and Material Removal Rate in Precision Grinding with Loose Abrasives." Key Engineering Materials 329 (January 2007): 69–74. http://dx.doi.org/10.4028/www.scientific.net/kem.329.69.

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This paper proposes a sub-aperture grinding tool for loose abrasive computer controlled surfacing, which is designed to perform epicyclic motion and rotate around its centre at a rapid rate, whilst the entire mechanism revolves around a secondary centre at a slower rate. In actual process, the wear of the tool could affect the material removal function, and make the process unstable, thus in fact, it is difficult to make a deterministic manufacturing. The focus of the present paper is on wearing characteristics of sub-aperture tools and the wear evenness as the main objectives. To make a furth

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Мунистер, В. Д., А. Л. Золкин, В. С. Тормозов, and Б. С. Стригин. "Management of information processes of informationanalytical system with the help of boundary computations." Vestnik of Russian New University. Series «Complex systems: models, analysis, management», no. 2 (June 21, 2022): 31–42. http://dx.doi.org/10.18137/rnu.v9187.22.02.p.031.

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Рассматривается транзакционная сущность организации распределенных вычислительных систем. Обозначается форма осуществления эталонного взаимодействия в традиционных системах передачи данных и приводится характеристика имеющихся исследований, посвященных проблемам организации управления и маршрутизации информационными процессами для устройств интернета вещей. Рассматривается алгоритм совершенствования маршрутизации информационных процессов. Детерминируется характер однонаправленной организации транзакционной операции, которая осуществляется в рамках агрегации информационных процессов, выясняются

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Liu, Haoqiang, Hongjun Li, Zhuchun Peng, Sichen Li, and Chun Ran. "Effects of Cultivation Modes on Soil Protistan Communities and Its Associations with Production Quality in Lemon Farmlands." Plants 14, no. 13 (2025): 2024. https://doi.org/10.3390/plants14132024.

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Citrus is one of the most widely consumed fruits in the world, and its cultivation industry continues to develop rapidly. However, the roles of soil protistan communities during citrus growth are not yet fully understood, despite the potential significance of these communities to the health and quality of citrus. In this study, we examined the soil properties and protistan communities in Eureka lemon farmlands located in Chongqing, China, during the flowering and fruiting stages of cultivation, both in greenhouse and open-field settings. In general, the majority of the measured soil properties

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uit het Broek, Michiel A. J., Ruud H. Teunter, Bram de Jonge, Jasper Veldman, and Nicky D. Van Foreest. "Condition-Based Production Planning: Adjusting Production Rates to Balance Output and Failure Risk." Manufacturing & Service Operations Management 22, no. 4 (2020): 792–811. http://dx.doi.org/10.1287/msom.2019.0773.

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Problem Definition: Many production systems deteriorate over time as a result of load and stress caused by production. The deterioration rate of these systems typically depends on the production rate, implying that the equipment’s deterioration rate can be controlled by adjusting the production rate. We introduce the use of condition monitoring to dynamically adjust the production rate to minimize maintenance costs and maximize production revenues. We study a single-unit system for which the next maintenance action is scheduled upfront. Academic/Practical Relevance: Condition-based maintenance

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Namilae, S., and N. Chandra. "Multiscale Model to Study the Effect of Interfaces in Carbon Nanotube-Based Composites." Journal of Engineering Materials and Technology 127, no. 2 (2005): 222–32. http://dx.doi.org/10.1115/1.1857940.

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In order to fully harness the outstanding mechanical properties of carbon nanotubes (CNT) as fiber reinforcements, it is essential to understand the nature of load transfer in the fiber matrix interfacial region of CNT-based composites. With controlled experimentation on nanoscale interfaces far off, molecular dynamics (MD) is evolving as the primary method to model these systems and processes. While MD is capable of simulating atomistic behavior in a deterministic manner, the extremely small length and time scales modeled by MD necessitate multiscale approaches. To study the atomic scale inte

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Bar-Lev, Shaul K., David Perry, and Wolfgang Stadje. "CONTROL POLICIES FOR INVENTORY SYSTEMS WITH PERISHABLE ITEMS: OUTSOURCING AND URGENCY CLASSES." Probability in the Engineering and Informational Sciences 19, no. 3 (2005): 309–26. http://dx.doi.org/10.1017/s0269964805050175.

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We consider control policies for perishable inventory systems with random input whose purpose is to mitigate the effects of unavailability. In the basic uncontrolled system, the arrival times of the items to be stored and the ones of the demands for those items form independent Poisson processes. The shelf lifetime of every item is finite and deterministic. Every demand is for a single item and is satisfied by the oldest item on the shelf, if available. The first controlled model excludes the possibility of unsatisfied demands by introducing a second source of fresh items that is completely re

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Cheng, Hao, Hui Chen, Hanying Jia, Shu Zhang, and Xiao Liu. "Probabilistic Analysis of Ground Surface Settlement of Excavation Considering Spatial Variable Modified Cam-Clay Model Parameters." Applied Sciences 12, no. 19 (2022): 9411. http://dx.doi.org/10.3390/app12199411.

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The modified Cam-clay model (MCC model) is capable of representing the consolidation process of the soil under a complex stress path and thus is extensively adopted in the numerical analysis of excavation engineering. For reliability problems of ground surface settlement of excavation, minimal attention has been paid to investigating the effect of spatial variable MCC model parameters on the settlement during the staged construction of the excavation. Based on laboratory tests and sensitivity analysis, this study launched the probabilistic transient hydro-mechanical coupling analysis of excava

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Decraene, James, and Thomas Hinze. "A Multidisciplinary Survey of Computational Techniques for the Modelling, Simulation and Analysis of Biochemical Networks." JUCS - Journal of Universal Computer Science 16, no. (9) (2010): 1152–75. https://doi.org/10.3217/jucs-016-09-1152.

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All processes of life are controlled by networks of interacting biochemical components. The purpose of modelling these networks is manifold. From a theoretical point of view it allows the exploration of network structures and dynamics, to find emergent properties or to explain the organisation and evolution of networks. From a practical point of view, in silico experiments can be performed that would be very expensive or impossible to achieve in the laboratory, such as hypothesis-testing with regards to knock-out experiments or overexpression, or checking the validity of a proposed molecular m

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Bagretsov, Sergey, Evgeny Shalonov, and Lyudmila Rozanova. "Applying an active strategy for updating the potential properties of human-machine complexes in the processes of their design and operation." Ergodesign, no. 3 (September 12, 2021): 188–96. http://dx.doi.org/10.30987/2658-4026-2021-3-188-196.

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The analysis of the literature, reflecting the problem of potentiality in creating complex systems, including human-machine complexes (HMC) is carried out. On the basis of the generalized data, potentiality is defined as a fundamental property of objective reality, an integral part of the integrity structure of complex objects, which in the process of their functioning manifests itself in the form of engineering control situations unforeseen by the developers. A strategy for solving the problem of revealing the potential properties of HMC is considered from the viewpoint of comparing two

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