Journal articles: 'Terminal attractor'

1

Bianchini, M., S. Fanelli, M. Gori, and M. Maggini. "Terminal attractor algorithms: A critical analysis." Neurocomputing 15, no. 1 (April 1997): 3–13. http://dx.doi.org/10.1016/s0925-2312(96)00045-8.

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Lin, Xin, and Junji Ohtsubo. "Terminal attractor optical associative memory for pattern recognition." Optics & Laser Technology 29, no. 1 (February 1997): xiii. http://dx.doi.org/10.1016/s0030-3992(97)88158-3.

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Lin, Xin, Masahiko Mori, Junji Ohtsubo, and Masanobu Watanabe. "Terminal Attractor Optical Associative Memory for Pattern Recognition." Japanese Journal of Applied Physics 39, Part 1, No. 2B (February 28, 2000): 908–11. http://dx.doi.org/10.1143/jjap.39.908.

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4

Liu, Hua-Kuang, Jacob Barhen, and Nabil H. Farhat. "Optical implementation of terminal-attractor-based associative memory." Applied Optics 31, no. 23 (August 10, 1992): 4631. http://dx.doi.org/10.1364/ao.31.004631.

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Azar, Ahmad Taher, and Fernando E. Serrano. "Stabilization of Port Hamiltonian Chaotic Systems with Hidden Attractors by Adaptive Terminal Sliding Mode Control." Entropy 22, no. 1 (January 19, 2020): 122. http://dx.doi.org/10.3390/e22010122.

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In this study, the design of an adaptive terminal sliding mode controller for the stabilization of port Hamiltonian chaotic systems with hidden attractors is proposed. This study begins with the design methodology of a chaotic oscillator with a hidden attractor implementing the topological framework for its respective design. With this technique it is possible to design a 2-D chaotic oscillator, which is then converted into port-Hamiltonia to track and analyze these models for the stabilization of the hidden chaotic attractors created by this analysis. Adaptive terminal sliding mode controllers (ATSMC) are built when a Hamiltonian system has a chaotic behavior and a hidden attractor is detected. A Lyapunov approach is used to formulate the adaptive device controller by creating a control law and the adaptive law, which are used online to make the system states stable while at the same time suppressing its chaotic behavior. The empirical tests obtaining the discussion and conclusions of this thesis should verify the theoretical findings.

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Lin, Xin, Junji Ohtsubo, and Masahiko Mori. "Terminal attractor optical associative memory with adaptive control parameter." Optics Communications 151, no. 4-6 (June 1998): 353–65. http://dx.doi.org/10.1016/s0030-4018(98)00059-5.

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Diveev, A., and E. Sofronova. "Attractor property for terminal manifold in control synthesis problem." IOP Conference Series: Materials Science and Engineering 151 (October 2016): 012046. http://dx.doi.org/10.1088/1757-899x/151/1/012046.

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Lin, Xin, Junji Ohtsubo, and Masahiko Mori. "Capacity of optical associative memory using a terminal attractor model." Optics Communications 146, no. 1-6 (January 1998): 49–54. http://dx.doi.org/10.1016/s0030-4018(97)00497-5.

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9

Tian, Daxin, Jianshan Zhou, Honggang Qi, Yingrong Lu, Yunpeng Wang, Jian Wang, and Anping He. "A Bio-Inspired QoS-Oriented Handover Model in Heterogeneous Wireless Networks." Journal of Applied Mathematics 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/920123.

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We propose a bio-inspired model for making handover decision in heterogeneous wireless networks. It is based on an extended attractor selection model, which is biologically inspired by the self-adaptability and robustness of cellular response to the changes in dynamic environments. The goal of the proposed model is to guarantee multiple terminals’ satisfaction by meeting the QoS requirements of those terminals’ applications, and this model also attempts to ensure the fairness of network resources allocation, in the meanwhile, to enable the QoS-oriented handover decision adaptive to dynamic wireless environments. Some numerical simulations are preformed to validate our proposed bio-inspired model in terms of adaptive attractor selection in different noisy environments. And the results of some other simulations prove that the proposed handover scheme can adapt terminals’ network selection to the varying wireless environment and benefits the QoS of multiple terminal applications simultaneously and automatically. Furthermore, the comparative analysis also shows that the bio-inspired model outperforms the utility function based handover decision scheme in terms of ensuring a better QoS satisfaction and a better fairness of network resources allocation in dynamic heterogeneous wireless networks.

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Wu, Chwan-Hwa, and Hua-Kuang Liu. "Unipolar terminal-attractor-based neural associative memory with adaptive threshold and perfect convergence." Applied Optics 33, no. 11 (April 10, 1994): 2210. http://dx.doi.org/10.1364/ao.33.002210.

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Sundiev, Igor’ Yu, and Andrey B. Frolov. "Organizational and Digital Network Means of Terminal Destruction of Social Development." Economic Strategies 144, no. 3 (June 25, 2021): 58–69. http://dx.doi.org/10.33917/es-3.177.2021.58-69.

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At the moment, there is a change in the universal attractors of the historical process; in this regard, a new management model is required, corresponding to the new “program requirements” of the attractor “from the future”. The former political and economic regulators have fulfilled their role, but the patterns of thinking developed over the centuries do not allow for any other means of “reset” than destruction. The article analyzes who, why, and by what means attempts to preserve the existing world order. As a tool of destruction, the actors of globalization have chosen ultra-effective digital network methods of cross-border impact — a hidden organizational weapon that allows, without destroying the infrastructure facilities necessary to meet vital needs, to block the development of society through the deformation of the motivational and need base of a person. In order to identify the hidden impact of organizational weapons, the authors propose to use a methodological “polarizing filter” — a normative ranking that allows us to determine the direction of various social phenomena as the results of “horizontal” or “vertical” regulation, leading to the limit of destruction or development.

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Diveev, Askhat, Elizaveta Shmalko, and Elena Sofronova. "Multipoint Numerical Criterion for Manifolds to Guarantee Attractor Properties in the Problem of Synergetic Control Design." ITM Web of Conferences 18 (2018): 01001. http://dx.doi.org/10.1051/itmconf/20181801001.

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The paper presents the results of our research on the application of symbolic regression methods for the numerical solution of the problem of synthesis of synergetic control. Synergetic control is characterized by the presence of manifolds in the state space that must have the properties of an attractor, in particular terminal manifolds, as well as the existence of regions of state space through which system solutions do not pass, for example, phase constraints, that must have the properties of repellers. In the present paper we formulate a numerical criterion for ensuring the property of an attractor for a terminal manifold of arbitrary dimension, taking into account the dynamic behavior of the system in a neighborhood of a given manifold. The results of computational experiments on the effective application of the proposed criterion are presented. It is shown that the proposed approach makes it possible to automate the synthesis of synergistic control using the methods of symbolic regression.

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Wang, Shaojie, Amin Yousefpour, Abdullahi Yusuf, Hadi Jahanshahi, Raúl Alcaraz, Shaobo He, and Jesus M. Munoz-Pacheco. "Synchronization of a Non-Equilibrium Four-Dimensional Chaotic System Using a Disturbance-Observer-Based Adaptive Terminal Sliding Mode Control Method." Entropy 22, no. 3 (February 27, 2020): 271. http://dx.doi.org/10.3390/e22030271.

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In this paper, dynamical behavior and synchronization of a non-equilibrium four-dimensional chaotic system are studied. The system only includes one constant term and has hidden attractors. Some dynamical features of the governing system, such as invariance and symmetry, the existence of attractors and dissipativity, chaotic flow with a plane of equilibria, and offset boosting of the chaotic attractor, are stated and discussed and a new disturbance-observer-based adaptive terminal sliding mode control (ATSMC) method with input saturation is proposed for the control and synchronization of the chaotic system. To deal with unexpected noises, an extended Kalman filter (EKF) is implemented along with the designed controller. Through the concept of Lyapunov stability, the proposed control technique guarantees the finite time convergence of the uncertain system in the presence of disturbances and control input limits. Furthermore, to decrease the chattering phenomena, a genetic algorithm is used to optimize the controller parameters. Finally, numerical simulations are presented to demonstrate the performance of the designed control scheme in the presence of noise, disturbances, and control input saturation.

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14

He, Naibao, Changsheng Jiang, Bin Jiang, and Qian Gao. "Terminal Sliding Mode Control with Unidirectional Auxiliary Surfaces for Hypersonic Vehicles Based on Adaptive Disturbance Observer." Mathematical Problems in Engineering 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/285716.

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A novel flight control scheme is proposed using the terminal sliding mode technique, unidirectional auxiliary surfaces and the disturbance observer model. These proposed dynamic attitude control systems can improve control performance of hypersonic vehicles despite uncertainties and external disturbances. The terminal attractor is employed to improve the convergence rate associated with the critical damping characteristics problem noted in short-period motions of hypersonic vehicles. The proposed robust attitude control scheme uses a dynamic terminal sliding mode with unidirectional auxiliary surfaces. The nonlinear disturbance observer is designed to estimate system uncertainties and external disturbances. The output of the disturbance observer aids the robust adaptive control scheme and improves robust attitude control performance. Finally, simulation results are presented to illustrate the effectiveness of the proposed terminal sliding mode with unidirectional auxiliary surfaces.

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Li, Kening, Jianyong Cao, and Fan Yu. "Study on the Nonsingular Problem of Fractional-Order Terminal Sliding Mode Control." Mathematical Problems in Engineering 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/523251.

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An improved type of control strategy combining the fractional calculus with nonsingular terminal sliding mode control named non-singular fractional terminal sliding mode control (NFOTSM) is proposed for the nonlinear tire-road friction control system of vehicle in this paper. A fractional-order switching manifold is proposed, and the corresponding control law is formulated based on the Lyapunov stability theory to guarantee the sliding condition. The proposed controller ensures the finite time stability of the closed-loop system. Then, a terminal attractor is introduced to solve the singularity problem of fractional terminal sliding mode control (FOTSM). Finally, the performance of the NFOTSM is fully investigated compared with other related algorithms to find the effectiveness for the tire-road friction system. The results show that the NFOTSM has better performance than other related algorithms.

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Chang, En-Chih. "Adaptive neuro-fuzzy nonsingular terminal attractor and its application in high-performance AC power conditioners." Journal of Intelligent & Fuzzy Systems 31, no. 6 (December 5, 2016): 3007–12. http://dx.doi.org/10.3233/jifs-169185.

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17

Chang, En-Chih. "Study and Application of Intelligent Sliding Mode Control for Voltage Source Inverters." Energies 11, no. 10 (September 24, 2018): 2544. http://dx.doi.org/10.3390/en11102544.

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In this paper, an intelligent sliding mode controlled voltage source inverter (VSI) is developed to achieve not only quick transient behavior, but satisfactory steady-state response. The presented approach combines the respective merits of a nonsingular fast terminal attractor (NFTA) as well as an adaptive neuro-fuzzy inference system (ANFIS). The NFTA allows no singularity and error states to be converged to the equilibrium within a finite time, while conventional sliding mode control (SMC) leads to long-term (infinite) convergent behavior. However, there is the likelihood of chattering or steady-state error occurring in NFTA due to the overestimation or underestimation of system uncertainty bound. The ANFIS with accurate estimation and the ease of implementation is employed in NFTA for suppressing the chatter or steady-state error so as to improve the system’s robustness against uncertain disturbances. Simulation results display that this described approach yields low distorted output wave shapes and quick transience in the presence of capacitor input rectifier loading as well as abrupt connection of linear loads. Experimental results conducted on a 1 kW VSI prototype with control algorithm implementation in Texas Instruments DSP (digital signal processor) support the theoretic analysis and reaffirm the robust performance of the developed VSI. Because the proposed VSI yields remarkable benefits over conventional terminal attractor VSIs on the basis of computational quickness and unsophisticated realization, the presented approach is a noteworthy referral to the designers of correlated VSI applications in future, such as DC (direct current) microgrids and AC (alternating current) microgrids, or even hybrid AC/DC microgrids.

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Mostafaee, Javad, Saleh Mobayen, Behrouz Vaseghi, Mohammad Vahedi, and Afef Fekih. "Complex dynamical behaviors of a novel exponential hyper–chaotic system and its application in fast synchronization and color image encryption." Science Progress 104, no. 1 (January 2021): 003685042110033. http://dx.doi.org/10.1177/00368504211003388.

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This paper proposes a novel exponential hyper–chaotic system with complex dynamic behaviors. It also analyzes the chaotic attractor, bifurcation diagram, equilibrium points, Poincare map, Kaplan–Yorke dimension, and Lyapunov exponent behaviors. A fast terminal sliding mode control scheme is then designed to ensure the fast synchronization and stability of the new exponential hyper–chaotic system. Stability analysis was performed using the Lyapunov stability theory. One of the main features of the proposed controller is the finite time stability of the terminal sliding surface designed with high–order power function of error and derivative of error. The approach was implemented for image cryptosystem. Color image encryption was carried out to confirm the performance of the new hyper–chaotic system. For image encryption, the DNA encryption-based RGB algorithm was used. Performance assessment of the proposed approach confirmed the ability of the proposed hyper–chaotic system to increase the security of image encryption.

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19

WU, YUNJIE, BAITING LIU, WULONG ZHANG, and XIAODONG LIU. "ADAPTIVE BACKSTEPPING SLIDING MODE CONTROLLER FOR FLIGHT SIMULATOR BASED ON RBFNN." International Journal of Modeling, Simulation, and Scientific Computing 04, no. 04 (September 12, 2013): 1342007. http://dx.doi.org/10.1142/s1793962313420075.

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For flight simulator system, a kind of Adaptive Backstepping Sliding Mode Controller (ABSMC) based on Radial Base Function Neural Network (RBFNN) observer is presented. The sliding mode control theory is famous by its characteristic that it is insensitive to the external disturbances and parameters uncertainties. Combining this characteristic with Backstepping method can simplifies the controller design. And the addition of the terminal attractor can make the arrival time shorten greatly. However, too large external disturbances and parameters uncertainties are still not allowed to the system, and the design process of ABSMC does not have the upper bound information of disturbance until a RBFNN observer is designed to solve the problems. The simulation results show that the proposed scheme can improve the tracking precision and reduce the chattering of the control input, and the system has a higher robustness.

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20

Butcher, Joshua T., Adam G. Goodwill, Shyla C. Stanley, and Jefferson C. Frisbee. "Blunted temporal activity of microvascular perfusion heterogeneity in metabolic syndrome: a new attractor for peripheral vascular disease?" American Journal of Physiology-Heart and Circulatory Physiology 304, no. 4 (February 15, 2013): H547—H558. http://dx.doi.org/10.1152/ajpheart.00805.2012.

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A key clinical outcome for peripheral vascular disease (PVD) in patients is a progressive decay in skeletal muscle performance and its ability to resist fatigue with elevated metabolic demand. We have demonstrated that PVD in obese Zucker rats (OZR) is partially due to increased perfusion distribution heterogeneity at successive microvascular bifurcations within skeletal muscle. As this increased heterogeneity (γ) is longitudinally present in the network, its cumulative impact is a more heterogeneous distribution of perfusion between terminal arterioles than normal, causing greater regional tissue ischemia. To minimize this negative outcome, a likely compensatory mechanism against an increased γ should be an increased temporal switching at arteriolar bifurcations to minimize downstream perfusion deficits. Using in situ cremaster muscle, we determined that temporal activity (the cumulative sum of absolute differences between successive values of γ, taken every 20 s) was lower in OZR than in control animals, and this difference was present in both proximal (1A-2A) and distal (3A-4A) arteriolar bifurcations. Although adrenoreceptor blockade (phentolamine) improved temporal activity in 1A-2A arteriolar bifurcations in OZR, this was without impact in the distal microcirculation, where only interventions against oxidant stress (Tempol) and thromboxane A2 activity (SQ-29548) were effective. Analysis of the attractor for γ indicated that it was not only elevated in OZR but also exhibited severe reductions in range, suggesting that the ability of the microcirculation to respond to any challenge is highly restricted and may represent the major contributor to the manifestation of poor muscle performance at this age in OZR.

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Tseng, Chwan-Lu, Shun-Yuan Wang, Shou-Chuang Lin, Jen-Hsiang Chou, and Ke-Fan Chen. "A Diagnostic System for Speed-Varying Motor Rotary Faults." Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/310626.

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This study proposed an intelligent rotary fault diagnostic system for motors. A sensorless rotational speed detection method and an improved dynamic structural neural network are used. Moreover, to increase the convergence speed of training, a terminal attractor method and a hybrid discriminant analysis are also adopted. The proposed method can be employed to detect the rotary frequencies of motors with varying speeds and can enhance the discrimination of motor faults. To conduct the experiments, this study used wireless sensor nodes to transmit vibration data and employed MATLAB to write codes for functional modules, including the signal processing, sensorless rotational speed estimation, neural network, and stochastic process control chart. Additionally, Visual Basic software was used to create an integrated human-machine interface. The experimental results regarding the test of equipment faults indicated that the proposed novel diagnostic system can effectively estimate rotational speeds and provide superior ability of motor fault discrimination with fast training convergence.

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22

Zak, Michail. "Terminal attractors in neural networks." Neural Networks 2, no. 4 (January 1989): 259–74. http://dx.doi.org/10.1016/0893-6080(89)90036-1.

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Zak, Michail. "Stochastic representation of chaos using terminal attractors." Chaos, Solitons & Fractals 24, no. 3 (May 2005): 863–68. http://dx.doi.org/10.1016/j.chaos.2004.09.098.

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Vivas-Reyes, Ricardo, Alejando Morales-Bayuelo, Carlos Gueto, Juan C. Drosos, Johana Márquez Lázaro, Rosa Baldiris, Maicol Ahumedo, Catalina Vivas-Gomez, and Dilia Aparicio. "Study of interaction energies between residues of the active site of Hsp90 and geldanamycin analogues using quantum mechanics/molecular mechanics methods." F1000Research 8 (December 2, 2019): 2040. http://dx.doi.org/10.12688/f1000research.20844.1.

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Background: Heat shock protein (Hsp90KDa) is a molecular chaperone involved in the process of cellular oncogenesis, hence its importance as a therapeutic target in clinical trials. Geldanamycin is an inhibitor of Hsp90 chaperone activity, which binds to the ATP binding site in the N-terminal domain of Hsp90. However, geldanamycin has shown hepatotoxic damage in clinical trials; for this reason, its use is not recommended. Taking advantage that geldanamycin binds successfully to Hsp90, many efforts have focused on the search for similar analogues, which have the same or better biological response and reduce the side effects of its predecessor; 17-AAG and 17-DMAG are examples of these analogues. Methods: In order to know the chemical factors influencing the growth or decay of the biological activity of geldanamycin analogues, different computational techniques such as docking, 3DQSAR and quantum similarity were used. Moreover, the study quantified the interaction energy between amino acids residues of active side and geldanamycin analogues, through hybrid methodologies and density functional theory (DFT) indexes. Results: The evaluation of interaction energies showed that the interaction with Lys58 residue is essential for the union of the analogues to the active site of Hsp90, and improves its biological activity. This union is formed through a substituent on C-11 of the geldanamycin macrocycle. A small and attractor group was found as the main steric and electrostatic characteristic that substituents on C11 need in order to interact with Lys 58; behavior was observed with hydroxy and methoxy series of geldanamycin analogues, under study. Conclusion: These outcomes were supported with quantum similarity and reactivity indices calculations using DFT in order to understand the non-covalent stabilization in the active site of these compounds.

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Vivas-Reyes, Ricardo, Alejando Morales-Bayuelo, Carlos Gueto, Juan C. Drosos, Johana Márquez Lázaro, Rosa Baldiris, Maicol Ahumedo, Catalina Vivas-Gomez, and Dilia Aparicio. "Study of interaction energies between residues of the active site of Hsp90 and geldanamycin analogues using quantum mechanics/molecular mechanics methods." F1000Research 8 (April 16, 2020): 2040. http://dx.doi.org/10.12688/f1000research.20844.2.

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Background: Heat shock protein (Hsp90KDa) is a molecular chaperone involved in the process of cellular oncogenesis, hence its importance as a therapeutic target. Geldanamycin is an inhibitor of Hsp90 chaperone activity, which binds to the ATP binding site in the N-terminal domain of Hsp90. However, geldanamycin has shown hepatotoxic damage in clinical trials; for this reason, its use is not recommended. Taking advantage that geldanamycin binds successfully to Hsp90, many efforts have focused on the search for similar analogues, which have the same or better biological response and reduce the side effects of its predecessor; 17-AAG and 17-DMAG are examples of these analogues. Methods: In order to know the chemical factors influencing the growth or decay of the biological activity of geldanamycin analogues, different computational techniques such as docking, 3DQSAR and quantum similarity were used. Moreover, the study quantified the interaction energy between amino acids residues of active side and geldanamycin analogues, through hybrid methodology (Autodock-PM6) and DFT indexes. Results: The evaluation of interaction energies showed that the interaction with Lys58 residue is essential for the union of the analogues to the active site of Hsp90, and improves its biological activity. This union is formed through a substituent on C-11 of the geldanamycin macrocycle. A small and attractor group was found as the main steric and electrostatic characteristic that substituents on C11 need in order to interact with Lys 58; behavior was observed with hydroxy and methoxy series of geldanamycin analogues, under study. Conclusion: This study contributes with new hybrid methodology (Autodock-PM6) for the generation of 3DQSAR models, which to consider the interactions between compounds and amino acids residues of Hsp90´s active site in the alignment generation. Additionally, quantum similarity and reactivity indices calculations using DFT were performed to know the non-covalent stabilization in the active site of these compounds.

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Chang, En-Chih, Chun-An Cheng, and Rong-Ching Wu. "Robust Optimal Tracking Control of a Full-Bridge DC-AC Converter." Applied Sciences 11, no. 3 (January 28, 2021): 1211. http://dx.doi.org/10.3390/app11031211.

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This paper develops a full-bridge DC-AC converter, which uses a robust optimal tracking control strategy to procure a high-quality sine output waveshape even in the presence of unpredictable intermissions. The proposed strategy brings out the advantages of non-singular fast convergent terminal attractor (NFCTA) and chaos particle swarm optimization (CPSO). Compared with a typical TA, the NFCTA affords fast convergence within a limited time to the steady-state situation, and keeps away from the possibility of singularity through its sliding surface design. It is worth noting that once the NFCTA-controlled DC-AC converter encounters drastic changes in internal parameters or the influence of external non-linear loads, the trembling with low-control precision will occur and the aggravation of transient and steady-state performance yields. Although the traditional PSO algorithm has the characteristics of simple implementation and fast convergence, the search process lacks diversity and converges prematurely. So, it is impossible to deviate from the local extreme value, resulting in poor solution quality or search stagnation. Thereby, an improved version of traditional PSO called CPSO is used to discover global optimal NFCTA parameters, which can preclude precocious convergence to local solutions, mitigating the tremor as well as enhancing DC-AC converter performance. By using the proposed stable closed-loop full-bridge DC-AC converter with a hybrid strategy integrating NFCTA and CPSO, low total harmonic distortion (THD) output-voltage and fast dynamic load response are generated under nonlinear rectifier-type load situations and during sudden load changes, respectively. Simulation results are done by the Matlab/Simulink environment, and experimental results of a digital signal processor (DSP) controlled full-bridge DC-AC converter prototype confirm the usefulness of the proposed strategy.

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Zak, Michail. "Terminal attractors for addressable memory in neural networks." Physics Letters A 133, no. 1-2 (October 1988): 18–22. http://dx.doi.org/10.1016/0375-9601(88)90728-1.

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Chang, En-Wei, and Hui-Huang Tai. "An Investigation into Switching Vessel Sizes for Efficient Container Terminal Operations: A Case Study of Kaohsiung Port." International Journal of Maritime Engineering 163, A1 (April 7, 2021): 101–18. http://dx.doi.org/10.5750/ijme.v163ia1.9.

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Given the continued growth in the size of container ships, major hub ports around the world have carried out large-scale upgrades of their port facilities to attract shipping companies to choose their ports, thereby enhancing the competitiveness of their ports. This study takes Kaohsiung Port as an example and uses the Decision Analytic Network Process (DANP) method to investigate container terminal operations by switching container terminal operations to appropriate new locations. The results of the study indicate that, despite the external issues (such as a lack of deep-water terminals and hinterland in the port area, the upsizing of ships, and new strategic shipping alliances), Kaohsiung Port authority must accelerate the upgrade of its container terminals, integrate its port resources to build deep-water berth facilities with highefficient container operating system, and improve the operating efficiency of its existing terminals, as a means to maintain the status of Kaohsiung Port as a regional centre.

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Zhou, Tong, and Hua Fang. "Analysis of PDR Passenger-Sharing Rate Based on Service Attributes." Advanced Materials Research 143-144 (October 2010): 1342–46. http://dx.doi.org/10.4028/www.scientific.net/amr.143-144.1342.

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With safety, comfort, convenience, fast, economy, punctuality advantages and high service effectiveness, the introduction of passenger-dedicated line (PDL) will attract passenger volume assumed by other modes of long-short distance passenger transportation in terminal transportation system as part of its traffic component, named the transferred volume. Meanwhile, PDL will stimulate the potential travel demand to generate induced passenger volume. The volume of terminal passenger flow is of great significance in building PDLs, passenger railway stations, and transportation terminals. From the perspective of transportation mode service, by employing passenger-sharing rate model, Xi'an terminal is presented to estimate and analyze the long and short distance passenger transferred volume and the induced volume which it undertakes after introducing PDL.

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30

Lin, Xin. "Optical neural networks with terminal attractors for pattern recognition." Optical Engineering 35, no. 8 (August 1, 1996): 2145. http://dx.doi.org/10.1117/1.600795.

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Jin, Dong Xu, Fei Shi, Joon Sup Chin, and Joo Seok Song. "Time-Efficient Route Optimization in PMIPv6." Applied Mechanics and Materials 284-287 (January 2013): 2794–98. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2794.

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With the development of the wireless internet, there are more and more mobile terminals. Without a mobility management protocol a mobile terminal could not communicate with other terminals when it is away from its home network. Mobile IPv6 is proposed which is host-based mobility management protocol. But it has several drawbacks, such as wireless link resource waste, load or consumption of power in mobile terminal is large. To overcome the weakness of host-based mobility management protocol, network-based mobility management protocol called Proxy Mobile IPv6 (PMIPv6) is standardized by the IETF NETLMM working group, and it is starting to attract considerable attentions. Although several proposals have been made for Route Optimization (RO), they still need too many communications and it may cause communication delay. In this paper we proposed a time-efficient RO in PMIPv6 by optimize the procedure of it. We use the characteristic of anycast to achieve the time efficiency. By the mathematical analysis we prove that the proposed protocol has shorter latency and supports faster mobility of the mobile terminals.

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Triharto, Wiyoga, and Bambang Perkasa Alam. "Penataan Terminal Tipe B Kabupaten Sukabumi." MARKA (Media Arsitektur dan Kota) : Jurnal Ilmiah Penelitian 4, no. 1 (August 6, 2020): 27–42. http://dx.doi.org/10.33510/marka.2020.4.1.27-42.

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Ratu harbor beach is one of the mainstay tourist sites for the Regional Government of Sukabumi Regency in bringing PAD, besides public transportation facilities and terminals have a major role in supporting the queen port as a tourist attraction so that tourists are comfortable and facilitated in accessing through public transportation. The condition of the Pelabuhan Ratu Terminal, Sukabumi Regency is currently very poor, poorly maintained, and many supporting facilities are damaged and inadequate. This study aims to identify problems and formulate the type B terminal arrangement in Sukabumi Regency. The method used is descriptive qualitative in order to get a picture of the problems of the situation and conditions currently taking place or occurring in the present and the study of policies. Collecting data by field surveys, literature studies and interviews. The results in this study get a terminal B type terminal design concept Sukabumi Regency according to current and future needs.

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Arechavaleta, Gustavo, America Morales-Diaz, Hector M. Perez-Villeda, and Mario Castelan. "Hierarchical Task-Based Control of Multirobot Systems With Terminal Attractors." IEEE Transactions on Control Systems Technology 25, no. 1 (January 2017): 334–41. http://dx.doi.org/10.1109/tcst.2016.2549279.

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Fitri, Ismi Rosyiana, and Jung-Su Kim. "A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets." Mathematics 8, no. 11 (November 22, 2020): 2087. http://dx.doi.org/10.3390/math8112087.

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In the dual-mode model predictive control (MPC) framework, the size of the stabilizable set, which is also the region of attraction, depends on the terminal constraint set. This paper aims to formulate a larger terminal set for enlarging the region of attraction in a nonlinear MPC. Given several control laws and their corresponding terminal invariant sets, a convex combination of the given sets is used to construct a time-varying terminal set. The resulting region of attraction is the union of the regions of attraction from each invariant set. Simulation results show that the proposed MPC has a larger stabilizable initial set than the one obtained when a fixed terminal set is used.

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Lin, Chuan-Kai, and Sheng-De Wang. "Fuzzy system identification using an adaptive learning rule with terminal attractors." Fuzzy Sets and Systems 101, no. 3 (February 1999): 343–52. http://dx.doi.org/10.1016/s0165-0114(97)00106-1.

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Flores, Jorge R., Samuli Lehtonen, and Jaakko Hyvönen. "Exploring the impact of unstable terminals on branch support values in paleontological data." Paleobiology 47, no. 3 (February 15, 2021): 432–45. http://dx.doi.org/10.1017/pab.2020.64.

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AbstractRecent studies have acknowledged the many benefits of including fossils in phylogenetic inference (e.g., reducing long-branch attraction). However, unstable taxa are known to be problematic, as they can reduce either the resolution of the strict consensus or branch support. In this study, we evaluate whether unstable taxa that reduce consensus resolution affect support values, and the extent of such impact, under equal and extended implied weighting. Two sets of analyses were conducted across 30 morphological datasets to evaluate complementary aspects. The first focused on the analytical conditions incrementing the terminal instability, while the second assessed whether pruning wildcards improves support. Changes in support were compared with the “number of nodes collapsed by unstable terminals,” their “distance to the root,” the “proportion of missing data in a dataset,” and the “proportion of sampled characters.” Our results indicate that the proportion of missing entries distributed among closely related taxa (for a given character) might be as detrimental for stability as those distributed among characters (for a given terminal). Unstable terminals that (1) collapse few nodes or (2) are closely located to the root node have more influence on the estimated support values. Weighting characters according to their extra steps while assuming that missing entries contribute to their homoplasy reduced the instability of wildcards. Our results suggest that increasing character sampling and using extended implied weighting decreases the impact of wildcard terminals. This study provides insights for designing future research dealing with unstable terminals, a typical problem of paleontological data.

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Tadić, Snežana, Jelica Petrović-Vujačić, and Milovan Kovač. "Financial analysis of the intermodal terminal in Belgrade." Tehnika 75, no. 6 (2020): 782–89. http://dx.doi.org/10.5937/tehnika2006782t.

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The development of logistics infrastructure in Serbia is the key to achieving regional competitiveness and economic prosperity of the state. Intermodal terminals have great significance in logistics networks and their development enables the implementation of intermodal transport technologies as well as participation in international goods flows. Belgrade, the national and regional economic centre and an important traffic node, attracts significant intermodal, container flows. For this reason, it represents a location for the development of an intermodal terminal that would play an important role in the logistics network of Serbia and the region as well. This paper analyses the financial justification of the development of an intermodal terminal in Belgrade, based upon four parameters - net present value (NPV), internal rate of return (IRR), benefit-cost ratio (B/C) and investment return period (RP). Furthermore, a sensitivity analysis of the observed parameters regarding the change of input parameter values (the volume of intermodal, container flows and the service price levels) is conducted. Two project funding scenarios are defined according to the involvement of the private sector in overall investments. The result analysis indicates that in both of the scenarios, the development of an intermodal terminal in Belgrade would be financially justified. The sensitivity analysis has shown that the financial justification of the development of the observed intermodal terminal is more sensitive to the change in container flow volumes in comparison with the change in terminal service price levels.

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Yousefpour, Amin, Ashkan Haji Hosseinloo, Mohammad Reza Hairi Yazdi, and Arash Bahrami. "Disturbance observer–based terminal sliding mode control for effective performance of a nonlinear vibration energy harvester." Journal of Intelligent Material Systems and Structures 31, no. 12 (June 1, 2020): 1495–510. http://dx.doi.org/10.1177/1045389x20922903.

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We propose a new scheme to control the coexisting attractors in a bistable piezomagnetoelastic power generator. Coexisting periodic or chaotic attractors frequently occur in nonlinear energy harvesters. For effective performance of the energy harvester, the system is desired to operate on the high-energy periodic orbit. Therefore, a controller may be used to force the system to operate on the high-energy orbit. In the present research, a disturbance observer–based terminal sliding mode control with input saturation is proposed to push the system from low-energy periodic and chaotic attractors to high-energy periodic attractors. Furthermore, to minimize the energy required for the controller, a genetic algorithm optimization is employed to determine the bound of the input saturation and parameters of the controller. A major advantage of the proposed control technique is tracking control while control input limitations, significant concerns for energy harvesting purpose, are present. The Lyapunov stability theorem of the closed-loop system is proven in the presence of control input saturation and external disturbance. In addition to the primary resonance, superharmonic resonance is considered. The numerical results show that the proposed method can successfully control and shift the vibration energy harvesting system between different attractors in the presence of uncertainty and with minimal control energy budget.

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Yu, Xinghuo, Bin Wang, Batsukh Batbayar, Liuping Wang, and Zhihong Man. "An improved training algorithm for feedforward neural network learning based on terminal attractors." Journal of Global Optimization 51, no. 2 (September 2, 2010): 271–84. http://dx.doi.org/10.1007/s10898-010-9597-6.

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Pokrovskaya, O. D. "Special features of block trains and container trains promotion in the terminal network of the Saint Petersburg hub." PROCEEDINGS OF PETERSBURG TRANSPORT UNIVERSITY 18, no. 1 (March 31, 2021): 34–51. http://dx.doi.org/10.20295/1815-588x-2021-1-34-51.

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Objective: To analyze special features of block trains and container trains promotion in the terminal network of the Saint Petersburg hub, in the environment of the discussed transport hub. Methods: The means and methods of the theory of warehouse systems developed by O. B. Malikov, general systems theory, system and economic analysis, logistics, and railways operational management have been applied. Results: It has been established that in order to attract transit cargo ﬂows and further develop international transport corridors passing through the Saint Petersburg hub, primarily East–West directions, it is necessary to create a network of container terminals with ﬂexible logistics. This solution will expand the range of delivery areas using block trains, form competitive through rates, reorient highly proﬁtable freight trafﬁc from road transport to railways, as well as organize interaction with European and Chinese intermodal and stevedore slotting operators and expand the operation areas block trains, container trains, express and specialized trains. Practical importance: The results obtained can be applied in the implementation of the Saint Petersburg transport hub development concept, in the design of railway hub individual elements and units, as well as in the servicing optimization of the seaport and terminal infrastructure.

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Mikhailov, Ivan V., Victor M. Amoskov, Anatoly A. Darinskii, and Tatiana M. Birshtein. "The Structure of Dipolar Polymer Brushes and Their Interaction in the Melt. Impact of Chain Stiffness." Polymers 12, no. 12 (December 2, 2020): 2887. http://dx.doi.org/10.3390/polym12122887.

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By using the numerical lattice Scheutjens–Fleer self-consistent field (SF-SCF) method we have studied the effect of the restricted flexibility of grafted chains on the structure and mutual interaction of two opposing planar conventional and A-type dipolar brushes. Brushes are immersed in the solvent consisting of chains similar to the grafted ones. The increase of the chain rigidity enhances the segregation of grafted chains in a A-type dipolar brush into two populations: backfolded chains with terminal monomers near the grafting surface and chains with the ends at the brush periphery. The fraction of backfolded chains grows by an increase of the Kuhn segment length. It is shown that two opposite A-type dipolar brushes from semi-rigid chains are attracted to each other at short distances. The attraction becomes more pronounced and begins at larger distances for more rigid chains with the same brush characteristics: polymerization degree, grafting density, and dipole moments of monomer units. This attraction is connected with the dipole-dipole interactions between chains of oncoming brushes with oppositely directed dipoles penetrating deeply into each other upon contact. This effect of the chain rigidity is opposite to that for conventional brushes without dipoles in the chains. For such brushes, an increase in the chain rigidity leads to the enhanced repulsion between them.

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Garcia-Rodriguez, Rodolfo, Vicente Parra-Vega, Luis Enrique Ramos-Velasco, and Omar Arturo Dominguez-Ramirez. "Neuro-controller for antagonistic bi-articular muscle actuation in robotic arms based on terminal attractors." Transactions of the Institute of Measurement and Control 42, no. 11 (March 6, 2020): 2031–43. http://dx.doi.org/10.1177/0142331220904589.

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The conventional limitations of the robotic actuation mechanisms have led to many researchers needing to explore novel biomimetic motor mechanisms as the antagonistic human motor system. In this way, it is of interest to understand the inherent adaptive stiffness, or compliance, and modulation, in different alternative actuation architectures such as the antagonistic bi-articular (AbA) system. These novel AbA actuation mechanisms are characterized by resembling the efficient tendon and muscle build-up over our skeletal structure. In this paper, we propose a Cartesian neuro-controller for a robot manipulator actuated by a simplified adaptive viscoelastic linear AbA system. It is shown that the adaptive closed-loop system enforces terminal attractors, induced by a continuous model-free sliding mode control, simultaneously with a learning algorithm to compensate parametric uncertainties of AbA system through a low dimensional neural network. Numerical simulation results exhibit the feasibility of this approach.

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Qin, Xian Rong, Xin Liao, Yuan Yuan Liu, Qing Zhang, and Yuan Tao Sun. "Simulation of Wind Characteristics Surrounding a Container Terminal." Applied Mechanics and Materials 457-458 (October 2013): 699–702. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.699.

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Metal structures of present port machineries are much more flexible than those decades ago, and are therefore very vulnerable to various wind-induced vibrations, among which the frequently happened random buffeting of structures attracts some special attentions since it contributes pretty much to the early structural fatigue. The intensity of buffeting is closely related to the local surrounding wind field. In this paper, the local wind field of a container port in Shanghai of China was simulated by CFD technique, and the corresponding spatial distribution of wind velocity, turbulence intensity, and wind profile were investigated in detail.

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Bokov, Yuriy. "Etymological, legal and cultural aspects of the use of the terms “citizenship” and “nationality” in the German Empire." OOO "Zhurnal "Voprosy Istorii" 2021, no. 01 (January 1, 2021): 94–102. http://dx.doi.org/10.31166/voprosyistorii202101statyi30.

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Terminological pairs “citizen” and “subject”, “citizenship” and “nationality” attract the attention of researchers in various scientific fields traditionally. This circumstance is due, among other things, to the historical variability of the filling of the content of these categories, which depends on the form of government, the political regime, cultural ideas, and other factors. The purpose of the work is the study of the dynamic development of semantics, political, legal, and cultural practices of the concepts of “citizen” and “subject” in the German Empire.

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Friedrich, Daniel, Torsten Hoffmann, Joachim Bär, Michael Wermann, Susanne Manhart, Ulrich Heiser, and Hans-Ulrich Demuth. "Does human attractin have DP4 activity?" Biological Chemistry 388, no. 2 (February 1, 2007): 155–62. http://dx.doi.org/10.1515/bc.2007.017.

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Abstract Mutations in the mouse ATRN gene, which encodes attractin, offer links between this protein and pigmentation, metabolism, immune status and neurodegeneration. However, the mechanisms of attractin action are not understood. The protein was first identified in humans in a circulating form in serum. A protease activity was postulated similar to the membrane-bound ectoenzyme DP4/CD26. In the last decade, both DP4/CD26 and attractin were controversially described to be the major source of human serum DP4 activity. We purified attractin from human plasma, and found that the DP4-like activity of the preparation shows nearly identical kinetic properties to that of recombinant human DP4. In contrast, the native electrophoretic behavior of this activity is clearly different from human and porcine DP4, but co-migrates with the protein band identified as attractin by Western blotting and N-terminal sequencing. Nevertheless, a DP4 impurity could be demonstrated in purified plasma attractin and the activity could be removed by ADA affinity chromatography, resulting in a homogenous attractin preparation without DP4 activity. These results are substantiated by expression of different attractin isoforms, in which no DP4 activity was found either. This indicates that the multidomain protein attractin acts as a receptor or adhesion protein rather than a protease.

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YEO, Giles S. H., and Kenneth SIDDLE. "Attractin' more attention – new pieces in the obesity puzzle?" Biochemical Journal 376, no. 1 (November 15, 2003): e7-e8. http://dx.doi.org/10.1042/bj20031675.

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Genetic, biochemical and pharmacological studies in humans and rodents have established that signalling through the G-protein-coupled melanocortin-4 receptor (MC4R) by pro-opiomelanocortin (POMC)-derived ligands plays a critical role in the central suppression of appetite. As a consequence, malfunction of this signalling system leads to the development of obesity. It has been shown previously that melanocortin signalling can be modulated by the type 1 transmembrane protein attractin, apparently acting as a co-receptor for the inhibitory ligand agouti. Work reported in this issue of Biochemical Journal (Haqq et al.) demonstrates that the cytosolic tail of an attractin-like protein (ALP) binds directly and specifically to the C-terminal region of MC4R, raising the possibility that proteins of the attractin family influence melanocortin receptor function through multiple mechanisms.

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Bottani, Eleonora, and Antonio Rizzi. "An analytical methodology to estimate the potential volume attracted by a rail-road intermodal terminal." International Journal of Logistics Research and Applications 10, no. 1 (February 2, 2007): 11–28. http://dx.doi.org/10.1080/13675560600819668.

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Li, Aoshuang, Xiaodong Yang, and Feng Guo. "Exploring Mobile Terminal Continuance Usage from Customer Value Perspective." Information 10, no. 2 (February 19, 2019): 70. http://dx.doi.org/10.3390/info10020070.

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With the large-scale growth of mobile terminal users, exploring their continuance use behavior attracts wide attention. However, there is insufficient research on user psychological states in different hierarchy models towards continuance use of a mobile terminal. This study advanced a mediation model of continuance use of a mobile terminal with a moderator based on expectation confirmation theory from the perspective of customer value dimension. Data were collected in China, and 311 samples were used to examine the hypotheses provided from the research model with the partial least squares structural equation modeling method. The empirical results indicate that perceived usefulness positively influences continuance use of a mobile terminal, and perceived usefulness positively influences satisfaction and in turn impacts on continuance use of a mobile terminal. Specially, there is a significant mediating effect of attitude loyalty between satisfaction and continuance use of a mobile terminal. Moreover, the results also verify that mobility negatively moderates the relationship between attitude loyalty and continuance use of a mobile terminal. Our findings suggest that user psychological states are in different levels to reflect mobile terminal user value during the process of continuance use of a mobile terminal. Moreover, our findings indicate the boundary condition in continuance use of a mobile terminal.

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Jia, Zhe, Lin Li, Yunhui Peng, Feng Ding, and Emil Alexov. "The capricious electrostatic force: Revealing the signaling pathway in integrin α2-I domain." Journal of Theoretical and Computational Chemistry 17, no. 03 (May 2018): 1840001. http://dx.doi.org/10.1142/s0219633618400011.

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Integrins are cellular adhesion proteins located on cell surface. They are known to have open and closed conformations that correspond to high and low binding affinity to ligands, respectively. Integrin [Formula: see text]2 binds to the ligands via the ligand binding domain, [Formula: see text]2-I domain, which also has open and closed conformations. Experimentally, the closed to open conformation change is shown to be triggered by pulling the C-terminal away from the ligand binding site, but how the signal propagates from the distant C-terminal to the binding site is unknown. To explain the mechanisms of the conformation change, we built models of the [Formula: see text]2-I domain open and closed conformations in ligand free and ligand bound states, respectively. We found that the signaling pathway consists of F313-I280-V252 residues that connect the C-terminal and the ligand binding site. The pathway is highly conserved as revealed by a protein sequence analysis among 55 species. Furthermore, MM/PBSA energy calculations on the stabilities and ligand binding affinities of the closed and open conformations are consistent with experimental measurements. The open conformation is more favorable for ligand binding, and the closed conformation is more stable in unbound state. Energy analysis also revealed the “hot spots” for ligand binding, and most residues that contribute strongly to ligand binding free energy are highly conserved in evolution. In addition, the electrostatic analysis showed that the closed conformation has stronger long-range electrostatic attraction to the ligand compared with the open conformation. The difference is caused by the rearrangement of several charged residues during the binding. These observations make us suggest that the integrin [Formula: see text]2-I domain binding process involves the two-step “dock-lock” mechanism. The closed conformation first attracts the ligand from a long distance and afterwards, the open conformation locks the ligand at the binding site with high binding affinity.

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HAQQ, Andrea M., Patricia RENÉ, Toshiro KISHI, Kathy KHONG, Charlotte E. LEE, Hongyan LIU, Jeffrey M. FRIEDMAN, Joel K. ELMQUIST, and Roger D. CONE. "Characterization of a novel binding partner of the melanocortin-4 receptor: attractin-like protein." Biochemical Journal 376, no. 3 (December 15, 2003): 595–605. http://dx.doi.org/10.1042/bj20031241.

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The gene dosage effect of the MC4-R (melanocortin 4 receptor) on obesity suggests that regulation of MC4-R expression and function is critically important to the central control of energy homoeostasis. In order to identify putative MC4-R regulatory proteins, we performed a yeast two-hybrid screen of a mouse brain cDNA library using the mouse MC4-R intracellular tail (residues 303–332) as bait. We report here on one positive clone that shares 63% amino acid identity with the C-terminal part of the mouse attractin gene product, a single-transmembrane-domain protein characterized as being required for agouti signalling through the melanocortin 1 receptor. We confirmed a direct interaction between this ALP (attractin-like protein) and the C-terminus of the mouse MC4-R by glutathione S-transferase pulldown experiments, and mapped the regions involved in this interaction using N- and C-terminal truncation constructs; residues 303–313 in MC4-R and residues 1280–1317 in ALP are required for binding. ALP is highly expressed in brain, but also in heart, lung, kidney and liver. Furthermore, co-localization analyses in mice showed co-expression of ALP in cells expressing MC4-R in a number of regions known to be important in the regulation of energy homoeostasis by melanocortins, such as the paraventricular nucleus of hypothalamus and the dorsal motor nucleus of the vagus.

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Journal articles on the topic 'Terminal attractor'

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