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Journal articles on the topic 'Equivalent scheme transformation'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Tkachov, Igor. "A New Approach to Solving the Problem of Generating Sets of Complex Structural Objects Based on a Quasi-Equivalent Transformation of a Labeling Scheme." Cybernetics and Computer Technologies, no. 1 (March 30, 2021): 43–53. http://dx.doi.org/10.34229/2707-451x.21.1.4.

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The paper presents the results of a theoretical study related to the development of methods for constructing generating structures based on labeling schemes for generating sets of complex structural objects. In a theoretical aspect, generated objects are mappings of sets of objects into a set of labels, and in practical terms, they can be, in particular, visual images. The scientific and practical interest in generative constructions is that they can be used to determine whether objects belong to a certain class, that is, to solve the problem of pattern recognition. The problem of constructing

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Alamilla, Jorge L., José A. Rodriguez, and Rossana Vai. "Unification of Different Approaches to Probabilistic Seismic Hazard Analysis." Bulletin of the Seismological Society of America 110, no. 6 (2020): 2816–27. http://dx.doi.org/10.1785/0120200148.

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ABSTRACT Cornell’s, Esteva’s, and classical formulations for seismic hazard analysis are theoretically described and mathematically unified by a suitable treatment of the random ground-motion variable. Differences and connections among the schemes are discussed, allowing for a better understanding of the underpinning principles of probabilistic seismic hazard analysis. The classical formulation is equivalent to that by Esteva, and they correspond to a general scheme. Although they are mathematically equivalent, the two formulations each has its own particular approach to express the hazard rat

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Yan, Tong. "The numerical solutions for the nonhomogeneous Burgers' equation with the generalized Hopf-Cole transformation." Networks and Heterogeneous Media 18, no. 1 (2022): 359–79. http://dx.doi.org/10.3934/nhm.2023014.

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<abstract><p>In this paper, with the help of the generalized Hopf-Cole transformation, we first convert the nonhomogeneous Burgers' equation into an equivalent heat equation with the derivative boundary conditions, in which Neumann boundary conditions and Robin boundary conditions can be viewed as its special cases. For easy derivation and numerical analysis, the reduction order method is used to convert the problem into an equivalent first-order coupled system. Next, we establish a box scheme for this first-order system. By the technical energy analysis method, we obtain the prior

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CABALLERO, R., M. RODRÍGUEZ-ARTALEJO, and C. A. ROMERO-DÍAZ. "A Transformation-based implementation for CLP with qualification and proximity." Theory and Practice of Logic Programming 14, no. 1 (2012): 1–63. http://dx.doi.org/10.1017/s1471068412000014.

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AbstractUncertainty in logic programming has been widely investigated in the last decades, leading to multiple extensions of the classical logic programming paradigm. However, few of these are designed as extensions of the well-established and powerful Constraint Logic Programming (CLP) scheme for CLP. In a previous work we have proposed the proximity-based qualified constraint logic programming (SQCLP) scheme as a quite expressive extension of CLP with support for qualification values and proximity relations as generalizations of uncertainty values and similarity relations, respectively. In t

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Xiang, Wei, Ning Li, and Yeguo Sun. "Fuzzy Adaptive Prescribed Performance Control for a Class of Uncertain Nonlinear Systems with Unknown Dead-Zone Inputs." Mathematical Problems in Engineering 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/4386515.

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This paper proposes a fuzzy adaptive prescribed performance control scheme for a class of uncertain chaotic systems with unknown control gains and unknown dead-zone inputs. Firstly, an error transformation is introduced to transform the original constrained system into an equivalent unconstrained one. Then, based on the error transformation technique and the predefined performance technique, a fuzzy adaptive feedback control method is developed. It is shown that all the signals of the resulting closed-loop system are bounded. Finally, an illustrative example is given to demonstrate the effecti

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Bulanov, S. G. "The Analysis of the Systems Stability of Linear Differential Equations Based on the Transformation of Difference Schemes." Mekhatronika, Avtomatizatsiya, Upravlenie 20, no. 9 (2019): 542–49. http://dx.doi.org/10.17587/mau.20.542-549.

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The approach to the analysis of Lyapunov systems stability of linear ordinary differential equations based on multiplicative transformations of difference schemes of numerical integration is presented. As a result of transformations, the stability criteria in the form of necessary and sufficient conditions are formed. The criteria are invariant with respect to the right side of the system and do not require its transformation with respect to the difference scheme, the length of the gap and the step of the solution. A distinctive feature of the criteria is that they do not use the methods of th

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Smith, M. C., and G. W. Walker. "Interconnected vehicle suspension." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 3 (2005): 295–307. http://dx.doi.org/10.1243/095440705x6578.

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This paper introduces a class of passive interconnected suspensions, defined mathematically in terms of their mechanical admittance matrices, with the purpose of providing greater freedom to specify independently bounce, pitch, roll, and warp dynamics than conventional (passive) suspension arrangements. Two alternative realization schemes are described that are capable of implementing this class (under ideal assumptions). The first scheme incorporates an interconnected multilever arrangement consisting of four separate hydraulic circuits, which transforms the separate wheel station displacemen

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Huang, Wentao, Qingqing Zheng, Ying Hu, Yalan Huang, and Shasha Zhou. "Optimization of Frequency Modulation Energy Storage Configuration in Power Grid Based on Equivalent Full Cycle Model." Energies 17, no. 9 (2024): 2120. http://dx.doi.org/10.3390/en17092120.

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This paper aims to meet the challenges of large-scale access to renewable energy and increasingly complex power grid structure, and deeply discusses the application value of energy storage configuration optimization scheme in power grid frequency modulation. Based on the equivalent full cycle model and a large number of actual operation data, various energy storage technologies are technically analyzed, and the economic and environmental performance of different energy storage configuration schemes are comprehensively evaluated. On this basis, this paper puts forward a set of efficient and eco

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Fu, Yayun, Qianqian Zheng, Yanmin Zhao, and Zhuangzhi Xu. "Linearly Implicit High-Order Exponential Integrators Conservative Runge–Kutta Schemes for the Fractional Schrödinger Equation." Fractal and Fractional 6, no. 5 (2022): 243. http://dx.doi.org/10.3390/fractalfract6050243.

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In this paper, a family of high-order linearly implicit exponential integrators conservative schemes is constructed for solving the multi-dimensional nonlinear fractional Schrödinger equation. By virtue of the Lawson transformation and the generalized scalar auxiliary variable approach, the equation is first reformulated to an exponential equivalent system with a modified energy. Then, we construct a semi-discrete conservative scheme by using the Fourier pseudo-spectral method to discretize the exponential system in space direction. After that, linearly implicit energy-preserving schemes which

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Zhang, Peng, Zhenling Wang, and Weiwei Che. "Data-Driven Prescribed Performance Platooning Control Under Aperiodic Denial-of- Service Attacks." Mathematics 12, no. 21 (2024): 3313. http://dx.doi.org/10.3390/math12213313.

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This article studies a data-driven prescribed performance platooning control method for nonlinear connected automated vehicle systems (CAVs) under aperiodic denial-of-service (DoS) attacks. Firstly, the dynamic linearization technique is employed to transform the nonlinear CAV system into an equivalent linearized data model. Secondly, to improve the system’s transient performance, a prescribed performance transformation (PPT) scheme is proposed to transform the constrained output into the unconstrained one. In addition, an attack compensation mechanism is designed to reduce the adverse impact.

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Feng, Chunsheng, Cunyun Nie, Haiyuan Yu, Liping Zhou, and Karthikeyan Rajagopal. "A Difference Scheme and Its Error Analysis for a Poisson Equation with Nonlocal Boundary Conditions." Complexity 2020 (September 29, 2020): 1–7. http://dx.doi.org/10.1155/2020/6329404.

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The elliptic problem with a nonlocal boundary condition is widely applied in the field of science and engineering, such as the chaotic system. Firstly, we construct one high-accuracy difference scheme for a kind of elliptic problem by tactfully introducing an equivalent relation for one nonlocal condition. Then, we obtain the local truncation error equation by the Taylor formula and, initially, prove that the new scheme can reach the asymptotic optimal error estimate O h 2 ln h in the maximum norm through ingeniously transforming a two-dimensional problem to a one-dimensional one through bring

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Xu, Shu, and Fu Ming Li. "Study on Reconfiguration Approach of Mixed-Model Assembly Line Based on Petri Net Modeling of Workstations." Applied Mechanics and Materials 263-266 (December 2012): 3265–73. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.3265.

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This thesis puts forward a reconfiguration approach of mixed-model assembly line on the basis of adding equipments against short-term and violent change of demand. This approach makes uses of equivalent transformation of task volume to judge whether the capacity of current assembly line can satisfy the demand according to delivery time, and gives equipment configuration of completing the order by adjusting assembly line structure. Research results show that the shortage and excess of assembly line capacity as well as equipment configuration is different when order changes. The approach propose

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Kliuchenia, V. V. "Design of a discrete сosine transformation processor for image compression systems on a losless-to-lossy circuit". Doklady BGUIR 19, № 3 (2021): 5–13. http://dx.doi.org/10.35596/1729-7648-2021-19-3-5-13.

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Today, mobile multimedia systems that use the H.261 / 3/4/5, MPEG-1/2/4 and JPEG standards for encoding / decoding video, audio and images are widely spread [1–4]. The core of these standards is the discrete cosine transform (DCT) of I, II, III ... VIII types [DCT]. Wide support in a huge number of multimedia applications of the JPEG format by circuitry and software solutions and the need for image coding according to the L2L scheme determines the relevance of the problem of creating a decorrelated transformation based on DCT and methods for rapid prototyping of processors for computing an int

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Zhu, Congxu, Guojun Wang, and Kehui Sun. "Improved Cryptanalysis and Enhancements of an Image Encryption Scheme Using Combined 1D Chaotic Maps." Entropy 20, no. 11 (2018): 843. http://dx.doi.org/10.3390/e20110843.

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This paper presents an improved cryptanalysis of a chaos-based image encryption scheme, which integrated permutation, diffusion, and linear transformation process. It was found that the equivalent key streams and all the unknown parameters of the cryptosystem can be recovered by our chosen-plaintext attack algorithm. Both a theoretical analysis and an experimental validation are given in detail. Based on the analysis of the defects in the original cryptosystem, an improved color image encryption scheme was further developed. By using an image content–related approach in generating diffusion ar

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15

He, Jing, and Changfan Zhang. "Fault Reconstruction Based on Sliding Mode Observer for Nonlinear Systems." Mathematical Problems in Engineering 2012 (2012): 1–22. http://dx.doi.org/10.1155/2012/451843.

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This paper presents a precision fault reconstruction scheme for a class of nonlinear systems involving unknown input disturbances. First, using the coordinate transformation algorithm, the disturbances and faults of the system are fully decoupled. Therefore, it is possible to eliminate the influence of disturbances to the system, namely, better disturbances robustness. On this basis, the design of a sliding mode state observer makes the most genuine reconstruction realizable, instead of estimation of faults. Furthermore, with the equivalent principle of sliding mode variable structure, the pre

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Verweij, Martin D. "Reflection of Transient Acoustic Waves by a Continuously Layered Halfspace with Depth-Dependent Attenuation." Journal of Computational Acoustics 05, no. 03 (1997): 265–76. http://dx.doi.org/10.1142/s0218396x97000150.

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An integral transformation-type method is presented for the analysis of the space-time domain acoustic wavefield that is reflected by a halfspace consisting of a continuously layered, lossy, isotropic (equivalent) fluid. The application of a vertically varying compliance memory function makes it possible to model a large class of depth-dependent loss properties. The method combines higher-order WKBJ-like asymptotics with the Cagniard-De Hoop method of inverse transformation. The coefficients that occur in the WKBJ asymptotics follow a recurrence scheme that is easy to evaluate by means of a sy

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17

M. Korneev, A., A. K. Pogodaev, L. S. Abdullakh, and M. V. Salfetnikov. "Optimization structure database of complex systems." International Journal of Engineering & Technology 7, no. 2.13 (2018): 133. http://dx.doi.org/10.14419/ijet.v7i2.13.11626.

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In the article such ways of optimization of the structure of a database of complex structured objects that allow simplifying the scheme of an information system. As a result, the response time of the information system to the user's request is reduced, and it becomes possible to more effectively manage and monitor the progress of ongoing processes. A formalized model of the relational expression is developed, a model of the corresponding equivalent transformation of the chosen relational expression is created, a formal description of the developed algorithm for optimizing the queries is presen

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18

Zhang, Yinhao, Honggui Deng, Jun He, Zaoxing Zhu, Chengzuo Peng, and Haoqi Xiao. "Spectral Efficiency Optimization of Uplink Millimeter Wave MIMO-NOMA Systems." Sensors 22, no. 17 (2022): 6466. http://dx.doi.org/10.3390/s22176466.

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In this paper, we considered uplink communication, focusing on the improvement of spectral efficiency (SE) for millimeter wave (mmWave) multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) systems. Firstly, we proposed an adaptive cluster head selection algorithm. Then, a channel-aligned analog beamforming scheme was designed based on the selected cluster heads. After that, the user grouping algorithm was designed based on the user-equivalent channel correlation. Subsequently, the power allocation problem was transformed from a nonconvex problem to a convex one using the q

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19

Xiao, Qing, and Shaowu Zhou. "Comparing unscented transformation and point estimate method for probabilistic power flow computation." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 3 (2018): 1290–303. http://dx.doi.org/10.1108/compel-09-2017-0393.

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Purpose Unscented transformation (UT) and point estimate method (PEM) are two efficient algorithms for probabilistic power flow (PPF) computation. This paper aims to show the relevance between UT and PEM and to derive a rule to determine the accuracy controlling parameters for UT method. Design/methodology/approach The authors derive the underlying sampling strategies of UT and PEM and check them in different probability spaces, where quadrature nodes are selected. Findings Gauss-type quadrature rule can be used to determine the accuracy controlling parameters of UT. If UT method and PEM selec

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Milani, Abbas S., and James A. Nemes. "On Identification of Material Models When Nonrepeatability of Test Data is Present: Application to Textile Composites." Journal of Engineering Materials and Technology 126, no. 4 (2004): 443–49. http://dx.doi.org/10.1115/1.1789963.

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Engineering test data occasionally violate assumptions underlying standard material model identification. Consequently, one has to apply appropriate remedies with respect to each violation to enhance the reliability of identified material parameters. This paper generalizes the use of the signal-to-noise weighting scheme when heteroscedasticity of test data are suspected. Different mathematical and practical aspects of the approach are discussed. Additionally, the ensuing weighted identification process is simplified to an equivalent standard form by means of a space transformation. Finally, th

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Ali, Musrrat. "Robust Image Watermarking in Spatial Domain Utilizing Features Equivalent to SVD Transform." Applied Sciences 13, no. 10 (2023): 6105. http://dx.doi.org/10.3390/app13106105.

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In recent years, digital image watermarking has gained a significant amount of popularity and developed into a crucial and essential tool for copyright protection, security, and the identification of multimedia content. Despite its high computational complexity, singular value decomposition (SVD) is an extensively utilized transformation in digital image watermarking. This research presents a robust and blind image watermarking scheme that directly alters the image pixels in the spatial domain to incorporate the watermark by quantizing the block-wise invariant maximum singular value. Using a d

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Huang, Chanying, Songjie Wei, and Anmin Fu. "An Efficient Privacy-Preserving Attribute-Based Encryption with Hidden Policy for Cloud Storage." Journal of Circuits, Systems and Computers 28, no. 11 (2019): 1950186. http://dx.doi.org/10.1142/s021812661950186x.

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Cloud storage is one of the most widely-used storage services, because it can provide users with unlimited, scalable, low-cost and convenient resource services. When data is outsourced to cloud for storage, data security and access control are the two essential issues that need to be addressed. Attribute-based encryption (ABE) scheme can provide sufficient data security and fine-grained access control for cloud data. As more and more attention is drawn to privacy protection, privacy preservation becomes another urgent issue for cloud storage. In ABE, since the access policies are generally sto

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Xu, Shihao, Yingzi Guan, Changzhu Wei, Yulong Li, and Lei Xu. "Reinforcement-Learning-Based Tracking Control with Fixed-Time Prescribed Performance for Reusable Launch Vehicle under Input Constraints." Applied Sciences 12, no. 15 (2022): 7436. http://dx.doi.org/10.3390/app12157436.

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This paper proposes a novel reinforcement learning (RL)-based tracking control scheme with fixed-time prescribed performance for a reusable launch vehicle subject to parametric uncertainties, external disturbances, and input constraints. First, a fixed-time prescribed performance function is employed to restrain attitude tracking errors, and an equivalent unconstrained system is derived via an error transformation technique. Then, a hyperbolic tangent function is incorporated into the optimal performance index of the unconstrained system to tackle the input constraints. Subsequently, an actor-

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Huerta, Ramón, Thomas Nowotny, Marta García-Sanchez, H. D. I. Abarbanel, and M. I. Rabinovich. "Learning Classification in the Olfactory System of Insects." Neural Computation 16, no. 8 (2004): 1601–40. http://dx.doi.org/10.1162/089976604774201613.

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We propose a theoretical framework for odor classification in the olfactory system of insects. The classification task is accomplished in two steps. The first is a transformation from the antennal lobe to the intrinsic Kenyon cells in the mushroom body. This transformation into a higher-dimensional space is an injective function and can be implemented without any type of learning at the synaptic connections. In the second step, the encoded odors in the intrinsic Kenyon cells are linearly classified in the mushroom body lobes. The neurons that perform this linear classification are equivalent t

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Zhu, Fang, Wei Xiang, and Chunzhi Yang. "Composite Learning Prescribed Performance Control of Nonlinear Systems." Complexity 2021 (May 10, 2021): 1–10. http://dx.doi.org/10.1155/2021/9988328.

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This paper investigates a composite learning prescribed performance control (PPC) scheme for uncertain strict-feedback system. Firstly, a prescribed performance boundary (PPB) condition is developed for the tracking error, and the original system is transformed into an equivalent one by using a transformation function. In order to ensure that the tracking error satisfies the PPB, a sufficient condition is given. Then, a control scheme of PPC combined with neural network (NN) and backstepping technique is proposed. However, the unknown functions cannot be guaranteed to estimate accurately by th

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Huang, Xinhao, and Bo Yu. "A High-Order Numerical Method Based on a Spatial Compact Exponential Scheme for Solving the Time-Fractional Black–Scholes Model." Fractal and Fractional 8, no. 8 (2024): 465. http://dx.doi.org/10.3390/fractalfract8080465.

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This paper investigates a high-order numerical method based on a spatial compact exponential scheme for solving the time-fractional Black–Scholes model. Firstly, the original time-fractional Black–Scholes model is converted into an equivalent time-fractional advection–diffusion reaction model by means of a variable transformation technique. Secondly, a novel high-order numerical method is constructed with (2−α) accuracy in time and fourth-order accuracy in space based on a spatial compact exponential scheme, where α is the fractional derivative. The uniqueness of solvability of the derived num

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Duan, Ningyuan, Zhen Ni, Zhenguo Zhang, and Hongxing Hua. "An adaptive feedforward method in active vibration control for the propulsion shafting system." Journal of Vibration and Control 29, no. 17-18 (2023): 3970–81. http://dx.doi.org/10.1177/10775463221107840.

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This paper proposes a new adaptive feedforward control method for the rejection of multiple periodic disturbances in the propulsion shafting system. The active vibration control scheme of the propulsion shafting system is established by employing the equivalent-input-disturbance principle which reduces the complexity of the control system in applications. The adaptive control algorithm is designed by taking the scale transformation procedure and the frequency-tracking technique into consideration. The scale transformation normalizes the iso-surface of the optimization function by the frequency

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He, Chu, Zishan Shi, Tao Qu, Dingwen Wang, and Mingsheng Liao. "Lifting Scheme-Based Deep Neural Network for Remote Sensing Scene Classification." Remote Sensing 11, no. 22 (2019): 2648. http://dx.doi.org/10.3390/rs11222648.

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Recently, convolutional neural networks (CNNs) achieve impressive results on remote sensing scene classification, which is a fundamental problem for scene semantic understanding. However, convolution, the most essential operation in CNNs, restricts the development of CNN-based methods for scene classification. Convolution is not efficient enough for high-resolution remote sensing images and limited in extracting discriminative features due to its linearity. Thus, there has been growing interest in improving the convolutional layer. The hardware implementation of the JPEG2000 standard relies on

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Yi, Xiaopeng, Huey Tyng Cheong, Zhaohua Gong, Chongyang Liu, and Kok Lay Teo. "Dynamic optimization of a two-stage fractional system in microbial batch process." Electronic Research Archive 32, no. 12 (2024): 6680–97. https://doi.org/10.3934/era.2024312.

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<p>In this paper, we proposed a dynamic optimization problem involving a two-stage fractional system subjected to both a terminal state inequality constraint and continuous state inequality constraints in a microbial batch process. The objective function was the productivity of 1,3-propanediol at the terminal time, while the decision variables were the initial concentrations of biomass and glycerol, and the terminal time of the batch process. We first equivalently transformed the problem with free terminal time into one with fixed terminal time in a new time horizon by applying a propose

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Anokhina, E. А., and А. V. Timoshenko. "SYNTHESIS OF THE THERMALLY COUPLED DISTILLATION SEQUENCES." Fine Chemical Technologies 12, no. 6 (2017): 46–70. http://dx.doi.org/10.32362/2410-6593-2017-12-6-46-70.

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Approaching a hypothetical thermodynamically reversible process is one of the main directions of energy saving in distillation. In practice, this is achieved by the use of systems with coupled thermal and material flows (STMP). Such systems have long been used in the separation of zeotropic mixtures. As follows from the analysis of literature data, they save energy costs by up to 30%. Recently, it has been revealed that the use of such systems is possible, expedient and energetically advantageous for separating the close-boiling and azeotropic mixtures by extractive distillation (ED). The arti

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Huang, Ling, Xiang Xu, Heming Zhao, and Haoran Ge. "Transverse SINS/DVL Integrated Polar Navigation Algorithm Based on Virtual Sphere Model." Mathematical Problems in Engineering 2020 (October 31, 2020): 1–11. http://dx.doi.org/10.1155/2020/8892750.

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Due to the principle error caused by the Earth’s sphere model in transverse polar navigation, the ellipsoid model is usually used for transverse transformation. In order to avoid the complex transverse transformation of the ellipsoid model, a virtual sphere model, which can simplify the transformation of the ellipsoid model, is constructed in this paper. With the requirements of high accuracy and long-time navigation for AUV in the polar region, the integrated navigation scheme of SINS/DVL, which is based on the virtual sphere model, is proposed. The proposed method can improve the navigation

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Liu, Zhenbao, Lina Wang, Yuecheng Song, Qingqing Dang, and Bodi Ma. "Fault diagnosis and accommodation for multi-actuator faults of a fixed-wing unmanned aerial vehicle." Measurement Science and Technology 33, no. 7 (2022): 075903. http://dx.doi.org/10.1088/1361-6501/ac6146.

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Abstract This study proposes a system design scheme of fault detection, isolation, and accommodation algorithms for the actuator fault of a fixed-wing unmanned aerial vehicle (FW-UAV) by considering system nonlinearity, external disturbance, and multi-actuator faults. The fault diagnosis scheme consists of a comprehensive observer and a bank of fault isolation estimators designed based on the actuator of the FW-UAV. In the diagnosis module, the system model is transformed into two systems by introducing a transformation matrix, so that both the actuator faults and the system disturbance are se

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Agus, Pandoman. "Transformation of Additional Bank Indonesia'scapital Adequacy Ratio (Car) into State Collecting Rights Blbi." International Journal of Social Science and Human Research 07, no. 04 (2024): 2235–40. https://doi.org/10.5281/zenodo.10967953.

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The escalation of the monetary crisis in 1997/1998 had an impact on the banking industry in Indonesia, most of the banking industry ran out of money (bokek) so that the existence of banks became insolvent banks. Bank Indonesia, which functions as the last monetary gateway, issued monetary policy with the Liquidity Assistance Fund (BLBI) scheme, which was a bailout fund for Bank Indonesia for insolvent banks affected by the 1997/1998 monetary crisis. Bank Indonesia 's liquidity assistance scheme to obligors ( recipients ) has resulted in Bank Indonesia 's capital adequacy ratio ( CAR ) . Bank I

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Li, Yujian, and Xinxing Zhang. "Energy-Efficient Resource Allocation for Backscatter-Assisted Wireless Powered Communication Networks in Twin Workshop." Wireless Communications and Mobile Computing 2022 (May 19, 2022): 1–10. http://dx.doi.org/10.1155/2022/6144741.

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The problem of energy shortage in sensor nodes caused by frequent data interactions is one of the major constraints on the development of twin workshops. A backscatter-assisted wireless powered communication network (BAWPCN) has been deemed a potential solution for addressing the problem of energy shortage in twin workshops. How to effectively ensure the link energy efficiency (EE) while satisfying the quality of servers for each user has been of high interest, while it has not been well studied in previous works. Inspired by this, in this paper, we propose a resource allocation scheme based o

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RIGATOS, GERASIMOS, and EFTHYMIA RIGATOU. "SYNCHRONIZATION OF CIRCADIAN OSCILLATORS AND PROTEIN SYNTHESIS CONTROL USING THE DERIVATIVE-FREE NONLINEAR KALMAN FILTER." Journal of Biological Systems 22, no. 04 (2014): 631–57. http://dx.doi.org/10.1142/s0218339014500259.

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The paper proposes a new method for synchronization of coupled circadian cells and for nonlinear control of the associated protein synthesis process using differential flatness theory and the derivative-free nonlinear Kalman filter. By proving that the dynamic model of the FRQ protein synthesis is a differentially flat one, its transformation to the linear canonical (Brunovsky) form becomes possible. For the transformed model, one can find a state feedback control input that makes the oscillatory characteristics in the concentration of the FRQ protein vary according to desirable setpoints. To

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Xu, Mao, Shufang Li, Yihan Wang, and Qunyi Liu. "Towards Green and Low-Carbon Transformation via Optimized Polygeneration System: A Case Study of the Iron and Steel Industry." Applied Sciences 14, no. 17 (2024): 8052. http://dx.doi.org/10.3390/app14178052.

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Polygeneration systems have significant potential for energy conservation and emission reduction and can effectively promote green and low-carbon development in energy-intensive industries, such as the iron and steel industry. However, its application faces the difficulty in technology selection under multiple objectives simultaneously, which is to determine the technology portfolio to achieve the synergy of energy conservation goals and air pollutant emission reduction goals, as well as ensure the economic benefits of the enterprises. This study investigated a case polygeneration system where

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Rigatos, Gerasimos G., and Guilherme V. Raffo. "Input–Output Linearizing Control of the Underactuated Hovercraft Using the Derivative-Free Nonlinear Kalman Filter." Unmanned Systems 03, no. 02 (2015): 127–42. http://dx.doi.org/10.1142/s2301385015500089.

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The paper proposes a nonlinear control approach for the underactuated hovercraft model based on differential flatness theory and uses a new nonlinear state vector and disturbances estimation method under the name of derivative-free nonlinear Kalman filter. It is proven that the nonlinear model of the hovercraft is a differentially flat one. It is shown that this model cannot be subjected to static feedback linearization, however it admits dynamic feedback linearization which means that the system's state vector is extended by including as additional state variables the control inputs and their

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Lutsiv, Bohdan. "Transformation of banking in the new paradigm strategy of Ukraine’s development." Herald of Economics, no. 1(87) (July 8, 2019): 20–33. http://dx.doi.org/10.35774/10.35774/visnyk2018.01.020.

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The article considers the issues of transformation of banking into the new strategy of Ukraine’s development in conformity with the accelerating comprehensive transformations of the modern world. It is found that the crisis of globalization is deepening, resulting in the end of the industrial matrix of globalization and the beginning of post-industrial paradigm. It is pointed out that due to the networking transformation of the world a strategic perspective is rather an apolar world than a multipolar one, or a world of equivalent entities. This signals the end of Euro-centrism. In the paper, i

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Le Moine, Nicolas, Frédéric Hendrickx, Joël Gailhard, Rémy Garçon, and Frédéric Gottardi. "Hydrologically Aided Interpolation of Daily Precipitation and Temperature Fields in a Mesoscale Alpine Catchment." Journal of Hydrometeorology 16, no. 6 (2015): 2595–618. http://dx.doi.org/10.1175/jhm-d-14-0162.1.

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Abstract Hydrological modeling in mountainous regions, where catchment hydrology is heavily influenced by snow (and possibly ice) processes, is a challenging task. The intrinsic complexity of local processes is added to the difficulty of estimating spatially distributed inputs such as precipitation and temperature, which often exhibit a high spatial heterogeneity that cannot be fully captured by measurement networks. Hence, an interpolation step is often required prior to the hydrological modeling step. Usually, the reconstruction of meteorological forcings and the calibration of the hydrologi

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Wang, Guimei, Lijie Yang, and Yong Shuo Zhang. "Modularized design of coal-mine paste filling station based on fuzzy theory." World Journal of Engineering 15, no. 6 (2018): 743–50. http://dx.doi.org/10.1108/wje-01-2018-0006.

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Purpose This paper aims to study a modular method for designing a paste filling station (PFS) for a coal mine (CM) to reduce the PFS’s input cost and achieve reutilization. Design/methodology/approach Modular design criteria for the PFS are proposed and a modular division (MDiv) model and an evaluation method are established. The correlation-strength matrix of the PFS parts expressed in the form of rough numbers is transformed into a fuzzy equivalent matrix. The theory of rough sets and the fuzzy clustering method are introduced for PFS MDiv. The evaluating method is established for the PFS MD

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Zhou, Lilong, Jinming Feng, Lijuan Hua, and Linhao Zhong. "Extending square conservation to arbitrarily structured C-grids with shallow water equations." Geoscientific Model Development 13, no. 2 (2020): 581–95. http://dx.doi.org/10.5194/gmd-13-581-2020.

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Abstract. The square conservation law is implemented in atmospheric dynamic cores on latitude–longitude grids, but it is rarely implemented on quasi-uniform grids, given the difficulty involved in constructing anti-symmetrical spatial discrete operators on these grids. Increasingly more models are being developed on quasi-uniform grids, such as arbitrarily structured C-grids. Thuburn–Ringler–Skamarock–Klemp (TRiSK) is a shallow water dynamic core on an arbitrarily structured C-grid. The spatial discrete operator of TRiSK is able to naturally maintain the conservation properties of total mass a

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Lutsiv, Bohdan. "Transformation of banking in the new paradigm strategy of Ukraine’s development." Herald of Ternopil National Economic University, no. 1(87) (January 10, 2018): 20–33. http://dx.doi.org/10.35774/visnyk2018.01.020.

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Transformation of banking in the new paradigm strategy of Ukraine’s development Bohdan Lutsiv Abstract The article considers the issues of transformation of banking into the new strategy of Ukraine’s development in conformity with the accelerating comprehensive transformations of the modern world. It is found that the crisis of globalization is deepening, resulting in the end of the industrial matrix of globalization and the beginning of post-industrial paradigm. It is pointed out that due to the networking transformation of the world a strategic perspective is rather an apolar world than a mu

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Lin, Yang, Fan, et al. "A Mixed-Integer Second-Order Cone Programming Algorithm for the Optimal Power Distribution of AC-DC Parallel Transmission Channels." Energies 12, no. 19 (2019): 3605. http://dx.doi.org/10.3390/en12193605.

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For the controllability of the transmission power of DC transmission channels, the optimal power distribution (OPD) of AC-DC parallel transmission channels is an effective measure for improving the economic operation of an AC-DC interconnected power grid. A dynamic optimal power flow model for day-ahead OPD of AC-DC parallel transmission channels is established in this paper. The power flow equation constraints of an AC-DC interconnected power grid and the constraints of the discrete regulation requirement of the transmission power of DC channels are considered, which make the OPD model of the

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Wang, Hao, Xiaomin Liu, and Chunyu Yang. "Adaptive Neural Partial State Tracking Control for Full-State-Constrained Uncertain Singularly Perturbed Nonlinear Systems and Its Applications to Electric Circuit." Electronics 11, no. 8 (2022): 1209. http://dx.doi.org/10.3390/electronics11081209.

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This paper is concerned with the adaptive neural network (NN) partial tracking control problem for a class of completely unknown multi-input multi-output (MIMO) singularly perturbed nonlinear systems possessing time-varying asymmetric state constraints. To satisfy the constraints, we utilize the state-depended transformation technique to convert the original state-constrained system to an equivalent unconstrained one, then the state constraint problem can be solved by ensuring its stability. Partial state tracking can be achieved without the violation of state constraints. The adaptive trackin

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Shusharina, Galina A., and Zhanna V. Petrunina. "ANALYSIS OF ONLINE TRANSLATIONS OF EMOTIONAL-EVALUATIVE VOCABULARY OF TRAVELOGUE TEXTS." HUMANITIES AND SOCIAL STUDIES IN THE FAR EAST 20, no. 1 (2023): 48–54. http://dx.doi.org/10.31079/1992-2868-2023-20-1-48-54.

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The purpose of the article is a comparative analysis of travelogue texts in English and their translations made by modern machine translation systems in order to establish the preservation of the emotional-evaluative component of the lexical meaning of the word from the original text in the translation. The analysis was carried out according to the following scheme: determination of the meaning of the emotional-evaluative word in the original text, analysis of the meaning of the emotional-evaluative word in the original text and the translated text in a comparative aspect, and determination of

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Pană, Adrian, Alexandru Băloi, and Florin Molnar-Matei. "Mathematical Explanations of a Paradox Observed in a HVAC (High Voltage Alternating Current) Untransposed Overhead Line." Energies 12, no. 4 (2019): 734. http://dx.doi.org/10.3390/en12040734.

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The constructive asymmetry of the untransposed overhead lines of a high voltage alternating current is the cause of a great number of difficulties in their operation and modeling. In order to model the operating regimes of such lines, the symmetrical component method, based on constructive symmetry and thus the symmetry of the equivalent phase parameters, is inappropriate, which is why many research papers have been dedicated to either setting up improved modeling methods or to returning to phase coordinate modeling. This paper intends to justify a paradox found on some untransposed overhead l

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Terentiev, Vladislav Evgen'evich. "Laser-ultrasound cognitive transformation of energy and information in an electric drive." Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics 2025, no. 1 (2025): 39–45. https://doi.org/10.24143/2072-9502-2025-1-39-45.

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Energy-efficiency in contemporary electromachine technology depend on characteristics electrodrives, that requires optimization his exist and new structural elements. A model of optoelectronic electrodrive with laser-ultrasound cognitive transformation of energy and information is investigated. Model includes following basic elements: electromotor, driving a working mechanism; measuring-information complex, controlling and operating electromotor; amplifier on basis multi-modes solid laser with ultrasound quality modulator (UQML); transformer of laser pulses into voltage either current or magne

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Vizilter, Yu V., O. V. Vygolov, S. Yu Zheltov, and A. V. Morzhin. "MORPHOLOGICAL IMAGE ANALYSIS BASED ON ATTRIBUTE AND RELATIONAL REPRESENTATIONS OF MOSAIC IMAGE MODELS." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 204 (June 2021): 19–28. http://dx.doi.org/10.14489/vkit.2021.06.pp.019-028.

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A unified scheme for morphological analysis based on attribute and relational representations of mosaic image models is proposed. We consider 4 main types of model representation: functional-attribute (2D feature map), functional-relational (4D relational map), structure-resource-attribute (an area list with resources and attributes), and structure-resource-relational (a graph, which nodes correspond to regions and edges – to relations and both having resource attributes). In this case, the forms of representation of the model are equivalent to each other, in the sense that they contain the sa

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Xu, Chenyang, Humin Lei, Jiong Li, Jikun Ye, and Dongyang Zhang. "Adaptive Neural Control for Nonaffine Pure-Feedback System Based on Extreme Learning Machine." Mathematical Problems in Engineering 2019 (June 16, 2019): 1–13. http://dx.doi.org/10.1155/2019/5613212.

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For nonaffine pure-feedback systems, an adaptive neural control method based on extreme learning machine (ELM) is proposed in this paper. Different from the existing methods, this scheme firstly converts the original system into a nonaffine system containing only one unknown term by equivalent transformation, thus avoiding the cumbersome and complex indirect design process of traditional backstepping methods. Secondly, a high-performance finite-time-convergence-differentiator (FD) is designed, through which the system state variables and their derivatives are accurately estimated to ensure the

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von Clarmann, T., and U. Grabowski. "Elimination of hidden a priori information from remotely sensed profile data." Atmospheric Chemistry and Physics 7, no. 2 (2007): 397–408. http://dx.doi.org/10.5194/acp-7-397-2007.

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Abstract. Profiles of atmospheric state variables retrieved from remote measurements often contain a priori information which causes complication in the statistical use of data and in the comparison with other measured or modeled data. For such applications it often is desirable to remove the a priori information from the data product. If the retrieval involves an ill-posed inversion problem, formal removal of the a priori information requires resampling of the data on a coarser grid, which in some sense, however, is a prior constraint in itself. The fact that the trace of the averaging kernel

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