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Journal articles on the topic 'Predetermined motion time systems'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Genaidy, A. M., A. Agrawal, and A. Mital. "Computerized predetermined motion-time systems in manufacturing industries." Computers & Industrial Engineering 18, no. 4 (January 1990): 571–84. http://dx.doi.org/10.1016/0360-8352(90)90016-f.

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2

Alkan, Bugra, Daniel Vera, Mussawar Ahmad, Bilal Ahmad, and Robert Harrison. "A Model for Complexity Assessment in Manual Assembly Operations Through Predetermined Motion Time Systems." Procedia CIRP 44 (2016): 429–34. http://dx.doi.org/10.1016/j.procir.2016.02.111.

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3

Genaidy, A. M., A. Mital, and M. Obeidat. "The validity of predetermined motion time systems in setting production standards for industrial tasks." International Journal of Industrial Ergonomics 3, no. 3 (April 1989): 249–63. http://dx.doi.org/10.1016/0169-8141(89)90025-5.

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4

Laurig, W., F. M. Kühn, and K. C. Schoo. "An approach to assessing motor workload in assembly tasks by the use of predetermined-motion-time systems." Applied Ergonomics 16, no. 2 (June 1985): 119–25. http://dx.doi.org/10.1016/0003-6870(85)90214-5.

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5

Cai, Kaijun, Weiming Zhang, Wenzhuo Chen, and Hongfei Zhao. "A study on product assembly and disassembly time prediction methodology based on virtual maintenance." Assembly Automation 39, no. 4 (September 2, 2019): 566–80. http://dx.doi.org/10.1108/aa-12-2017-177.

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Purpose Based on virtual maintenance, this paper aims to propose a time prediction method of assembly and disassembly (A&D) actions of product maintenance process to enhance existing methods’ prediction accuracy, applicability and efficiency. Design/methodology/approach First, a framework of A&D time prediction model is constructed, which describes the time prediction process in detail. Then, basic maintenance motions which can comprise a whole A&D process are classified into five categories: body movement, working posture change, upper limb movement, operation and grasp/placement. A standard posture library is developed based on the classification. Next, according to motion characteristics, different time prediction methods for each motion category are proposed based on virtual maintenance simulation, modular arrangement of predetermined time standard theory and the statistics acquired from motion experiment. Finally, time correction based on the quantitative evaluation method of motion time influence factors is studied so that A&D time could be predicted with more accuracy. Findings Case study of time prediction of products’ various A&D processes is conducted by implementing the proposed method. The prediction process of diesel cooling fan disassemble time is presented in detail. Through comparison, the advantages and effectiveness of the method are demonstrated. Originality/value This paper proposes a more accurate, efficient and applicable product A&D time prediction method. It can help designers predict A&D time of a product maintenance accurately in early design phases without a physical prototype. It can also provide basis for the verification of maintainability, the balance of the design of product structure and system layout.

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Xu, Qinhuan, and Qiang Zhan. "A real-time inverse kinematics solution based on joint perturbation for redundant manipulators." Mechanical Sciences 12, no. 1 (February 25, 2021): 221–35. http://dx.doi.org/10.5194/ms-12-221-2021.

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Abstract. Aiming at the problem that the calculation of the inverse kinematics solution of redundant manipulators is very time-consuming, this paper presents a real-time method based on joint perturbation and joint motion priority. The method first seeks the pose nearest to the target pose in the manipulator's pose set through fine-tuning all the joints with different angle deviations at the same time and then regards this pose as the starting one to perform iterative calculations until the error between the current pose and the target pose is less than the predetermined error, thus obtaining the inverse kinematics solution corresponding to the target pose. This method can avoid the pseudo-inverse calculations of the Jacobian matrix and significantly reduce the solving complexity. Two types of manipulators are taken as examples to validate the proposed method. Under the premise that the manipulator motion trajectory is satisfied, the Jacobian pseudo-inverse method and the proposed method are both adopted to solve the inverse kinematics. Simulations and comparisons show that the proposed method has better real-time performance, and the joint motions can be flexibly controlled by setting different joint motion priorities. This method can make the work cycle faster and improve the production efficiency of redundant manipulators in real applications.

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Atalay, İsmail, Oğuz Alper İsen, Emin Cantez, Serkan Aydın, and Onur Akyel. "Integrated Real Time Image Processing In Robotic Automation Line." Academic Perspective Procedia 3, no. 1 (October 25, 2020): 141–50. http://dx.doi.org/10.33793/acperpro.03.01.33.

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Robotic automation systems includes higher production rates and increased productivity, more efficient use of materials, better product quality, improved safety, and reduced factory lead times. Higher output and increased productivity have been two of the biggest reasons in justifying the use of automation. Despite the claims of high quality from good workmanship by humans, automated systems typically perform the manufacturing process with less variability than human workers, resulting in greater control and consistency of product quality. Also, increased process control makes more efficient use of materials, resulting in less scrap. Despite all these advantages, the final product control is still carried out by workers. In this study, it is planned to prevent quality problems with a video processing that integrates with the robotic automation line in order to solve the final quality problem. This system, which controls the movements of the worker in the predetermined motion routes with the signals coming from the line. It aims to ensure that the products going to the customer are completely error free.

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Chegini, Somayeh, and Majid Yarahmadi. "Quantum sliding mode control via error sliding surface." Journal of Vibration and Control 24, no. 22 (January 15, 2018): 5345–52. http://dx.doi.org/10.1177/1077546317752848.

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In this paper, a new quantum sliding mode control, for improving the performance of the two-level quantum sliding mode control systems with bounded uncertainties, is introduced. The presented quantum sliding surface is based on the error which occurs between the predetermined sliding mode and the system state. The control objective is to derive the system state to reach the sliding mode domain and then maintain its motion on it. For this purpose, we use the sliding mode control method and periodic projective measurements. A theorem for facilitating the presented method is proved. The simulated example shows that both the reaching time to the sliding mode and the control amplitude are significantly decreased, which demonstrate the effectiveness and validity of the presented method.

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Negied, Nermin Kamal Abdel-Wahab, Elsayed B. Hemayed, and Magda Fayek. "HSBS: A Human’s Heat Signature and Background Subtraction Hybrid Approach for Crowd Counting and Analysis." International Journal of Pattern Recognition and Artificial Intelligence 30, no. 08 (July 17, 2016): 1655025. http://dx.doi.org/10.1142/s0218001416550259.

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This work presents a new approach for crowd counting and classification based upon human thermal and motion features. The technique is efficient for automatic crowd density estimation and type of motion determination. Crowd density is measured without any need for camera calibration or assumption of prior knowledge about the input videos. It does not need any human intervention so it can be used successfully in a fully automated crowd control systems. Two new features are introduced for crowd counting purpose: the first represents thermal characteristics of humans and is expressed by the ratio between their temperature and their ambient environment temperature. The second describes humans motion characteristics and is measured by the ratio between humans motion velocity and the ambient environment rigidity. Each ratio should exceed a certain predetermined threshold for human beings. These features have been investigated and proved to give accurate crowd counting performance in real time. Moreover, the two features are combined and used together for crowd classification into one of the three main types, which are: fully mobile, fully static, or mix of both types. Last but not least, the proposed system offers several advantages such as being a privacy preserving crowd counting system, reliable for homogeneous and inhomogeneous crowds, does not depend on a certain direction in motion detection, has no restriction on crowd size. The experimental results demonstrate the effectiveness of the approach.

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Zhang, Ping, Peigen Jin, Guanglong Du, and Xin Liu. "Ensuring safety in human-robot coexisting environment based on two-level protection." Industrial Robot: An International Journal 43, no. 3 (May 16, 2016): 264–73. http://dx.doi.org/10.1108/ir-12-2015-0222.

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Purpose The purpose of this paper is to provide a novel methodology based on two-level protection for ensuring safety of the moving human who enters the robot’s workspace, which is significant for dealing with the problem of human security in a human-robot coexisting environment. Design/methodology/approach In this system, anyone who enters the robot’s working space is detected by using the Kinect and their skeletons are calculated by the interval Kalman filter in real time. The first-level protection is mainly based on the prediction of the human motion, which used Gaussian mixture model and Gaussian Mixture Regression. However, even in cases where the prediction of human motion is incorrect, the system can still safeguard the human by enlarging the initial bounding volume of the human as the second-level early warning areas. Finally, an artificial potential field with some additional avoidance strategies is used to plan a path for a robot manipulator. Findings Experimental studies on the GOOGOL GRB3016 robot show that the robot manipulator can accomplish the predetermined tasks by circumventing the human, and the human does not feel dangerous. Originality/value This study presented a new framework for ensuring human security in a human-robot coexisting environment, and thus can improve the reliability of human-robot cooperation.

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An, Byoungkwon, Nadia Benbernou, Erik D. Demaine, and Daniela Rus. "Planning to fold multiple objects from a single self-folding sheet." Robotica 29, no. 1 (January 2011): 87–102. http://dx.doi.org/10.1017/s0263574710000731.

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SUMMARYThis paper considers planning and control algorithms that enable a programmable sheet to realize different shapes by autonomous folding. Prior work on self-reconfiguring machines has considered modular systems in which independent units coordinate with their neighbors to realize a desired shape. A key limitation in these prior systems is the typically many operations to make and break connections with neighbors, which lead to brittle performance. We seek to mitigate these difficulties through the unique concept of self-folding origami with a universal fixed set of hinges. This approach exploits a single sheet composed of interconnected triangular sections. The sheet is able to fold into a set of predetermined shapes using embedded actuation.We describe the planning algorithms underlying these self-folding sheets, forming a new family of reconfigurable robots that fold themselves into origami by actuating edges to fold by desired angles at desired times. Given a flat sheet, the set of hinges, and a desired folded state for the sheet, the algorithms (1) plan a continuous folding motion into the desired state, (2) discretize this motion into a practicable sequence of phases, (3) overlay these patterns and factor the steps into a minimum set of groups, and (4) automatically plan the location of actuators and threads on the sheet for implementing the shape-formation control.

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12

Chen, Pei-Jarn, Szu-Yueh Yang, Yen-Pei Chen, Muslikhin Muslikhin, and Ming-Shyan Wang. "Slip Estimation and Compensation Control of Omnidirectional Wheeled Automated Guided Vehicle." Electronics 10, no. 7 (April 1, 2021): 840. http://dx.doi.org/10.3390/electronics10070840.

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To achieve Industry 4.0 solutions for the networking of mechatronic components in production plants, the use of Internet of Things (IoT) technology is the optimal way for goods transportation in the cyber-physical system (CPS). As a result, automated guided vehicles (AGVs) are networked to all other participants in the production system to accept and execute transport jobs. Accurately tracking the planned paths of AGVs is therefore essential. The omnidirectional mobile vehicle has shown its excellent characteristics in crowded environments and narrow aisle spaces. However, the slip problem of the omnidirectional mobile vehicle is more serious than that of the general wheeled mobile vehicle. This paper proposes a slip estimation and compensation control method for an omnidirectional Mecanum-wheeled automated guided vehicle (OMWAGV) and implements a control system. Based on the slip estimation and compensation control of the general wheeled mobile platform, a Microchip dsPIC30F6010A microcontroller-based system uses an MPU-9250 multi-axis accelerometer sensor to derive the longitudinal speed, transverse speed, and steering angle of the omnidirectional wheel platform. These data are then compared with those from the motor encoders. A linear regression with a recursive least squares (RLS) method is utilized to estimate real-time slip ratio variations of four driving wheels and conduct the corresponding compensation and control. As a result, the driving speeds of the four omnidirectional wheels are dynamically adjusted so that the OMWAGV can accurately follow the predetermined motion trajectory. The experimental results of diagonally moving and cross-walking motions without and with slip estimation and compensation control showed that, without calculating the errors occurred during travel, the distances between the original starting position to the stopping position are dramatically reduced from 1.52 m to 0.03 m and from 1.56 m to 0.03 m, respectively. The higher tracking accuracy of the proposed method verifies its effectiveness and validness.

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13

Katochkov, V. M., G. V. Savin, and E. V. Toporkova. "TODAY's SMART CITY TRENDS IN THE WORLD." Bulletin of Udmurt University. Series Economics and Law 30, no. 3 (June 26, 2020): 340–45. http://dx.doi.org/10.35634/2412-9593-2020-30-3-340-345.

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Digitalization today is a modern trend focused on streamlining processes and improving efficiency. The introduction of information and communication technologies has affected not only enterprises, but complex socio-economic systems as cities, and this predetermined the development of smart cities. Today, IBM, McKinsey or Price Waterhouse are considered the brain centers for the development of this concept, while Siemens, BMW, Mercedes Benz, IBM, Phillips, General Electric, etc., discovered the “smart” city as a future-oriented concept, and chose only that a niche in which they can offer their products and services. The development of smart cities is also influenced by intergovernmental organizations and their specialized departments, as well as research centers, institutes and laboratories. There are more than 100 cities in the world that claim the title of “smart city”. At the same time, their current ratings reflect the implementation of modern information and communication technologies in the life of a person with the aim of improving the quality of his life in the development of the urban environment. The IESE Cities in Motion Index, Global Power City Index, The Global Cities Index, The Global Cities Outlook, Juniper Research, EasyPark Smart City Index ratings provide sufficient and comprehensive indicators to give this title. The developed standards ISO 37120 and ISO 37122 determine the main indicators for smart cities, while the criteria that determine the achievement of city smartness are conditionally formed today, which allows to clarify the semantic loads implemented in this definition, namely, to prioritize technologies for people and society, improving quality of life, and highlight differences with other similar definitions.

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Farrell, Judith M. "Predetermined Motion-Time Standards in Rehabilitation." Work 3, no. 2 (1993): 56–72. http://dx.doi.org/10.3233/wor-1993-3212.

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15

Wygant, Robert M. "A comparison of computerized predetermined time systems." Computers & Industrial Engineering 17, no. 1-4 (January 1989): 480–85. http://dx.doi.org/10.1016/0360-8352(89)90109-5.

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16

Dossett, Royal. "Computer application of a natural-language predetermined motion time system." Computers & Industrial Engineering 23, no. 1-4 (November 1992): 319–22. http://dx.doi.org/10.1016/0360-8352(92)90125-4.

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17

Wu, Shuang, Yao Wang, Joëlle Zita BolaBola, Hua Qin, Wenying Ding, Wei Wen, and Jianwei Niu. "Incorporating motion analysis technology into modular arrangement of predetermined time standard (MODAPTS)." International Journal of Industrial Ergonomics 53 (May 2016): 291–98. http://dx.doi.org/10.1016/j.ergon.2016.03.001.

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18

Arnold, D. H., C. W. G. Clifford, and A. Johnston. "Distorting time with motion." Journal of Vision 3, no. 9 (March 16, 2010): 190. http://dx.doi.org/10.1167/3.9.190.

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19

Bertolazzi, Enrico, Francesco Biral, and Mauro Da Lio. "real-time motion planning for multibody systems." Multibody System Dynamics 17, no. 2-3 (February 24, 2007): 119–39. http://dx.doi.org/10.1007/s11044-007-9037-7.

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20

Berman, Oded, and David Perry. "TWO CONTROL POLICIES FOR STOCHASTIC EOQ-TYPE MODELS." Probability in the Engineering and Informational Sciences 15, no. 4 (October 2001): 445–63. http://dx.doi.org/10.1017/s0269964801154021.

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We present the production version of two EOQ-type models in heavy traffic. The output is interpreted by random demand and the input by a deterministic production plus random returns. In the ON part of the cycle, the inventory content is a reflected Brownian motion, and in the OFF part, it is a Brownian motion with a negative drift. The ON/OFF periods generate an alternative renewal process and the content-level process is a regenerative process. Two control policies are considered. In one policy that is natural under conditions of continuous review, production is stopped when the content level in the ON period reaches a predetermined level q. In the other policy, which resembles periodic review, production is stopped when the ON time reaches a predetermined time t0.

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21

Perlstein, Howard, John Littlefield, and Igor Bazovsky. "ESS Quantification for Complex Systems." Journal of the IEST 32, no. 3 (May 1, 1989): 49–57. http://dx.doi.org/10.17764/jiet.1.32.3.9178t63667h640w3.

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Quantification of screen duration permits controlled purification of systems by the elimination of early failures to a predetermined degree of purity, consistent with reliability requirements at time of delivery for field use, or consistent with budgetary cost constraints, or both. In an earlier paper the authors developed a method for quantifying screen duration of Environmental Stress Screening (ESS) of homogeneous parts or component populations.1 This is briefly summarized under "Case of a Parts Population" and extended under "Mixed Parts Systems," to systems consisting of a mix of many different parts with different failure rates. In the case of parts, each failure constitutes the end of life of that part, while in the case of systems, a failure usually results in repair or "renewal" and the system continues operation (except for one-time systems). For parts, time-to-failure is observed, while for systems, times-between-failures is observed. The section titled "A Numerical Example" contains an example of calculating screen duration (Ts) for different predetermined degrees of purity, characterized by the screen residues that constitute the complements of purity. The Appendix describes the computer program used for the numerical solutions.

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Feng, Lin Ping, Zuo E. Fan, and You Gen Zhang. "Design of Guidance Law with Impact Angle and Impact Time Constraints." Advanced Materials Research 945-949 (June 2014): 1493–99. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.1493.

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In order to achieve the tactical mission of cooperative attack for multi-missiles, in a predetermined direction at a predetermined time, this paper studies the design of guidance law with impact angle and impact time constraints. Firstly, using the optimal control theory, the optimal guidance law is designed to control the impact angle, based the relative motion between missile and target. Then the state feedback guidance law is designed to control the arrival impact time, with the application of feedback linearization control theory. Finally, reference the design idea of two-stage guidance system, the anti-ship missile use two different guidance laws in the process of attacking the target. During the first stage, the state feedback guidance law is used to accurately control the impact time and coarsely control the impact angle. During the second stage, the optimal guidance law is used to accurately control the impact angle. And the correctness and effectiveness of the design method is verified by simulation.

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23

Sivers, V. A. "EMMULATION AND VICTIM (THE ANALYSIS OF THE VALUE ASPECT OF THE ARTIFICIAL INTELLIGENCE CREATION IN NICK BOSTROM`S MODEL)." UKRAINIAN CULTURAL STUDIES, no. 1 (2) (2018): 48–52. http://dx.doi.org/10.17721/ucs.2018.1(2).11.

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The article marks that in a newest period of history when the prospect of achievement of technological singularity need ake effectiveness of traditional cognitive models, special actuality consideration of ethic-philosophical аnd socio-anthropogenic acquires and aspects of creation of artificial intelligence to be revised (AI). Oxford philosopher Nick Bostrom tells about "loading of value" in the intelligence system, but does not examine emulation of experiencing as its basic condition. Attention to this problem predetermines introduction to the research field of the valued vector as a "victim" concept. It is reasonable, that general basis of ordinary human logic and developers of the systems of the calculated machines programming is a concept of sense, and one of key elements that form sense, there is a value that exists in a transition from its embodiment to the loss. Embodiment and loss of value form experiencing and become an event. Transition from the processes of reflection, that is imitated during creation of AI to the "event" concept as field and kernel of axiology of "experiencing" concept is the general element of research of psychology, axiology and to development of the systems of AI . It also contains sense of "victim" concept as passing from external to internal. If consciousness can be presented as ability of reflection, and appearance of life is impossible without replication id est self - copying then development of such presentation provides, for that a printing-down takes place over and over, but not fully, not quite, id est on other basis. The change of this basis means possibility of loss of present existence as to the result of action of mechanism self-copying and outlines possibility of introduction of "victim" concept. At the same time, a victim as a mechanism of natural selection differs from a victim in the human understanding. The feature of human form of value existence appears in its description of oblatoryness, where transformation of the last on new is the act realized and voluntarily from the side of man. A conclusion is grounded in the article, that it follows to give possibility to develop freely and without limitations, that will allow it (id est AІ) to investigate itself research of AІ and AІ, and it follows to provide the terms of such research a man, that in a regenerate form demonstrates the stages of oblatory motion of man to the inevitably result of "loading of value" in a certain imitation system.

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24

Stige, Signe Hjelen, Per-Einar Binder, Jan Reidar Stiegler, Elisabeth Schanche, Didrik Andreassen Hummelslund, and Aslak Hjeltnes. "Clients’ Perspective on Predetermined Time Limits for Therapy in the Context of the Norwegian Welfare System." SAGE Open 11, no. 2 (April 2021): 215824402110095. http://dx.doi.org/10.1177/21582440211009506.

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Limited capacity and high demand for mental health care drive efforts to improve the efficiency of treatment and increasingly result in predetermined time limits for treatment, even in government-covered treatment in welfare systems. How do clients experience having predetermined time limits for psychotherapy? We analyzed the transcripts of interviews with 18 participants who had completed a return to work (RTW) intervention based on emotion-focused therapy (EFT) that had predetermined time limits. The analysis identified four experiential trajectories through therapy with predetermined time limits, representing four narrative themes: Trajectory A: It is ok to stop here—Not wanting more therapy; Trajectory B: Seeing the benefits of continued therapy, but ready to give life a go without treatment; Trajectory C: Being on one’s own too early—Economic obstacles hindering the continuation of therapy; and Trajectory D: I need more than this—Securing continued therapy. Having the therapist communicate the timeframes for therapy clearly, while leaving room for individual tailoring of therapy, was experienced as very important by clients receiving psychotherapy with predetermined time limits.

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25

Babionitakis, Konstantinos, Gregory A. Doumenis, George Georgakarakos, George Lentaris, Kostantinos Nakos, Dionysios Reisis, Ioannis Sifnaios, and Nikolaos Vlassopoulos. "A real-time motion estimation FPGA architecture." Journal of Real-Time Image Processing 3, no. 1-2 (January 8, 2008): 3–20. http://dx.doi.org/10.1007/s11554-007-0070-9.

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26

Trotto, Paul A., and Robert J. Tracy. "The Effect of Implied Motion on the Recall of Interactive Pictures." Imagination, Cognition and Personality 13, no. 3 (March 1994): 249–58. http://dx.doi.org/10.2190/xmb4-47dd-ceth-xuh9.

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The literature has customarily defined interaction between pictured objects in two ways. First, interaction has been defined as simply a conjoined union or physical touching of objects within a given picture scene. The second definition portrays interaction as predetermined action or implied motion between the pictured objects. Researchers typically assume these two modes of defining interaction as essentially equivalent. Generally stated, the purpose of this study was to uncover the effect that implied motion has on the processing of visual information. A factorial design was conducted with dependent variables being imageability, nameability, and recall of pictured objects. Independent variables were implied motion and viewing time. Results showed that implied motion pictures presented at a short viewing time were more nameable and better recalled than stationary pictures presented at a short viewing time. But when subjects were given more time to view visual information, implied motion and stationary pictures were equally nameable and recalled. The results indicate that when visual information is presented for a sufficiently short time, implied motion heightens the availability of a verbal code.

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27

Blinov, A. P. "Estimating the time of motion of certain dynamical systems." Journal of Applied Mathematics and Mechanics 65, no. 5 (January 2001): 879–84. http://dx.doi.org/10.1016/s0021-8928(01)00093-4.

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28

Grandy, Jr., W. T. "Time Evolution in Macroscopic Systems. I. Equations of Motion." Foundations of Physics 34, no. 1 (January 2004): 1–20. http://dx.doi.org/10.1023/b:foop.0000012007.06843.ed.

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29

Hussmann, Stephan, Alexander Hermanski, and Torsten Edeler. "Real-Time Motion Artifact Suppression in TOF Camera Systems." IEEE Transactions on Instrumentation and Measurement 60, no. 5 (May 2011): 1682–90. http://dx.doi.org/10.1109/tim.2010.2102390.

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30

Sun, Ning, Yingchao Zhang, Gongfei Song, and Tao Li. "Design of observer-based quantized control for nonlinear time-delay systems." Transactions of the Institute of Measurement and Control 40, no. 15 (February 1, 2018): 4220–32. http://dx.doi.org/10.1177/0142331217745581.

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This paper is concerned with the problem of observer design for a class of nonlinear systems with time-varying delay and bounded disturbances. For the stabilization problem, attention is focused on the design of a quantized observer that ensures stability of the closed-loop system. For the robust H∞ control problem, a quantized observer is designed such that, in addition to the requirement of the robust stability, a prescribed disturbance attenuation level also needs to be achieved. The nonlinearity is assumed to satisfy the local Lipschitz condition. A more general case is considered, differing from the previous results where the Lipschitz constant is fixed and predetermined. Finally, a numerical example is provided to show the effectiveness of our method.

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Fermüller, Cornelia, Hui Ji, and Akiyoshi Kitaoka. "Illusory motion due to causal time filtering." Vision Research 50, no. 3 (February 2010): 315–29. http://dx.doi.org/10.1016/j.visres.2009.11.021.

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32

Verghese, P., and J. Coughlan. "Evolution of a motion trajectory over time." Journal of Vision 7, no. 9 (March 18, 2010): 1013. http://dx.doi.org/10.1167/7.9.1013.

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Fermuller, C., and H. Ji. "Illusory motion due to causal time filtering." Journal of Vision 7, no. 9 (March 30, 2010): 977. http://dx.doi.org/10.1167/7.9.977.

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34

Snowden, R. J., and O. J. Braddick. "The combination of motion signals over time." Vision Research 29, no. 11 (January 1989): 1621–30. http://dx.doi.org/10.1016/0042-6989(89)90143-0.

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35

Hoffmann, Michael, Thorsten J. Dorn, and Michael Bach. "Time course of motion adaptation: Motion-onset visual evoked potentials and subjective estimates." Vision Research 39, no. 3 (February 1999): 437–44. http://dx.doi.org/10.1016/s0042-6989(98)00186-2.

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36

Gao, Jiuchun, Anatol Pashkevich, Fabien Claveau, and Philippe Chevrel. "Real Time Motion Generation for Mobile Robot." IFAC-PapersOnLine 52, no. 13 (2019): 265–70. http://dx.doi.org/10.1016/j.ifacol.2019.11.179.

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Ejofodomi, O'tega, and Godswill Ofualagba. "Design of a Real Time Feedback Automation Irrigation System." European Journal of Engineering Research and Science 4, no. 12 (December 27, 2019): 117–20. http://dx.doi.org/10.24018/ejers.2019.4.12.1685.

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This paper presents the design of a real time feedback control automated irrigation systems that consists of monitoring units, control units, irrigation pipeline valves, and a network of irrigation pipeline. The monitoring units continuously measure the soil moisture content in the irrigation blocks, and if the moisture content drops below a predetermined threshold for the particular crop under production, it sends a wireless message to the control units controlling the pipeline valves along the water flow channel, causing the control units to open the valves leading to the water source and commencing automatic irrigation. When the moisture content rises above a predetermined threshold for the crop, the monitoring units sends a wireless message to the control units, causing them to close the pipeline valves and cease automatic irrigation. An automatic irrigation system pipeline network optimization software has also been designed to plan, cost, and design the automatic irrigation system for a piece of land prior to installation.

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Rahman, B. "Time-Delay Systems: An Overview." Nonlinear Phenomena in Complex Systems 23, no. 2 (July 9, 2020): 192–95. http://dx.doi.org/10.33581/1561-4085-2020-23-2-192-195.

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Time-delay naturally arises in many real-world systems, due to the fact that the instantaneous rate of change of such systems does not only depend on their current time but rather on their previous history as well. Hence, time-delays are ubiquitous, their introduction often leads to suppression of oscillations, multistability and chaotic motion in the dynamical systems. This review presents some models with different kinds of time-delays such as discrete, distributed and combination of both discrete and distributed time-delays with special emphasis on the reason of incorporating such delays into the system.

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Sutner, K., and W. Maass. "Motion planning among time dependent obstacles." Acta Informatica 26, no. 1-2 (October 1988): 93–122. http://dx.doi.org/10.1007/bf02915447.

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Sembiring, Sarmayanta, Hadir Kaban, and Rido Zulfahmi. "Perancangan Sistem Efisiensi Penggunaan Energi Listrik Menggunakan Sensor Gerak dan Sensor Arus." JURNAL MEDIA INFORMATIKA BUDIDARMA 4, no. 3 (July 20, 2020): 626. http://dx.doi.org/10.30865/mib.v4i3.2134.

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Efficiency system in using electrical energy has been designed using a PIR motion sensor, current sensor SCT-013-030, infrared LED and relay with a controller using Arduino Uno. The system is designed to turn off electronic equipment such as air conditioners, projectors and lights automatically as a solution from users forgetting to turn off electronic equipment when it is no longer in use. The experimental results show that the system has been running well, where the system can detect no movement for a predetermined time by using a PIR motion sensor. Detection of electronic equipment using sensors SCT-013-030 has been able to distinguish the state of the equipment whether it is ON or OFF based on differences in sensor output data that is read by the Arduino analog port. Sensor data when detecting the lamp when OFF is average = 1.333 while the mini projector and TV when off the average sensor data value = 1.667. The average current sensor data when detecting lights when ON = 5,333, mini projector = 8,333 and TV = 11,333. Overall the system designed has been able to turn off the equipment that is still active when the sensor does not detect any human movement during a predetermined time

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Allen, H., K. Dent, and G. Humphreys. "Common processes for segmentation by time and motion." Journal of Vision 9, no. 8 (September 3, 2010): 898. http://dx.doi.org/10.1167/9.8.898.

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Gong, Sheng-nan, and Jing-li Fu. "Noether’s theorems for the relative motion systems on time scales." Applied Mathematics and Nonlinear Sciences 3, no. 2 (December 1, 2018): 513–26. http://dx.doi.org/10.2478/amns.2018.2.00040.

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AbstractThis paper propose Noether symmetries and the conserved quantities of the relative motion systems on time scales. The Lagrange equations with delta derivatives on time scales are presented for the system. Based upon the invariance of Hamilton action on time scales, under the infinitesimal transformations with respect to the time and generalized coordinates, the Hamilton’s principle, the Noether theorems and conservation quantities are given for the systems on time scales. Lastly, an example is given to show the application the conclusion.

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Ji, Shuai, Chengrui Zhang, Tianliang Hu, and Ke Wang. "A Hardware Independent Real-time Ethernet for Motion Control Systems." International Journal of Computers Communications & Control 11, no. 1 (November 16, 2015): 39. http://dx.doi.org/10.15837/ijccc.2016.1.617.

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Ethernet for Manufacture Automation Control (EtherMAC) is a new kind of real-time Ethernet used in motion control systems. It adopts a line topology with a standard industrial computer based master node and field-programmable-gate-array based slave nodes. EtherMAC employs one slave node to manage cycle communication and clock synchronization, so the real-time demand for its master node can be greatly reduced and dedicated hardware is no longer mandatory. Its distributed clock compensation mechanism can get synchronization accuracy in nanosecond order. The advantages of industrial computer and field programmable-gate-array are combined with EtherMAC, so that high control performance can be achieved.

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Krafft, Amy E., and Jack H. Lichy. "Time-Motion Analysis of 6 Cystic Fibrosis Mutation Detection Systems." Clinical Chemistry 51, no. 7 (July 1, 2005): 1116–22. http://dx.doi.org/10.1373/clinchem.2004.047423.

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Abstract Background: A dramatic increase in requests for routine cystic fibrosis (CF) carrier screening prompted us to conduct a time-motion analysis comparing commercially available CF testing platforms. Questions addressed in the study included: (a) How much time is required to perform each step involved in carrying out the assay procedure? (b) Which system requires the minimum number of manual manipulations to complete a typical run? (c) What workflow benefits can be achieved by automation? Methods: We used a 96-sample run for comparisons and analyzed each of the 6 methods to determine the number of pipetting steps and manual manipulations, the labor and instrument time, and the total time required to perform the assay. The survey participants included a staff of 4 technologists who perform complex molecular assays regularly. Time required for each procedure was determined by direct observation and from work logs completed by the technologists. Results: The total number of pipetting motions varied from 78 to 344. Labor time ranged from 2.6 to 8.4 h, and total assay time from 7.6 to 13.7 h. Conclusion: Time-motion analysis allowed identification of a method that minimized pipetting motions and thus reduced the risk of repetitive stress injury.

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Gong, Sheng-Nan, Hui-Fang Gao, and Jing-Li Fu. "Lie symmetries of the relative motion systems on time scales." Indian Journal of Physics 94, no. 3 (June 13, 2019): 371–77. http://dx.doi.org/10.1007/s12648-019-01486-8.

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Yehia, H. M., and A. A. Elmandouh. "Integrable 2D Time-Irreversible Systems with a Cubic Second Integral." Advances in Mathematical Physics 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/8958747.

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We construct a very rare integrable 2D mechanical system which admits a complementary integral of motion cubic in the velocities in the presence of conservative potential and velocity-dependent (gyroscopic) forces. Special cases are given interpretation as a motion of a particle on a sphere endowed with a Riemannian metric, a particle in the Euclidean plane, and new generalizations of two cases of motion of a rigid body with a cubic integral, known by names of Goriachev-Chaplygin and Goriachev.

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Alvarez, Luis, Luis Gomez, Pedro Henriquez, and Javier Sánchez. "Real-time camera motion tracking in planar view scenarios." Journal of Real-Time Image Processing 11, no. 2 (June 12, 2013): 287–99. http://dx.doi.org/10.1007/s11554-013-0360-3.

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48

Weissert, Thomas. "Conjugating Motion." KronoScope 4, no. 2 (2004): 269–96. http://dx.doi.org/10.1163/1568524042801329.

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AbstractOur conception of time changed from the lofty absolute coordinate of the classical paradigm to merely a connection between local reference frames, thanks to the Special Theory of Relativity, a connection that depends on knowing the relative velocity between frames, and that entails knowing local velocities. We measure local velocities using a clock that cannot give us precise time because knowing time depends solely on knowing the process that we use to generate time. In the case of both macroscopic and microscopic clocks, an intrinsic uncertainty blocks us from knowing both the dynamic and static states of the variables involved. By focusing on the conceptual process that we use to describe physical systems, we can approach a common epistemology of both microscopic and macroscopic dynamical systems. We find that both systems of description require that we inser t time implicitly into the formalism to account for the conservation of identity through our own psychological experience of time. Although we cannot define exactly the nature of the conserved identity, we can describe its evolution with pairs of conjugate variables, one tracking the static state and one the dynamic state. Uncertainty extends from our conceiving system into our descriptive theories. An epistemology that emphasizes the balance between the conjugate variables as they serve to describe the evolution of the identity provides a common ground on which to discuss both the Heisenberg uncertainty principle of quantum mechanics and the bounded randomness of a deterministic macroscopic system. We have seen time go from a global to a local phenomenon, and perhaps now we must allow time to become an epiphenomenon even at the local level, one that we ourselves insert to account for the continuity of our own conscious experience.

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Briskorn, Dirk. "Routing two stacking cranes with predetermined container sequences." Journal of Scheduling 24, no. 4 (June 19, 2021): 367–80. http://dx.doi.org/10.1007/s10951-021-00689-4.

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AbstractThe scheduling of gantry cranes with respect to mutual interference has received considerable attention in recent years. We consider a subproblem which arises when each crane has a sequence of tasks to be assigned. The problem is concerned with resolving the interference between two cranes by determining which crane avoids the other in order to let it complete its next task first. We provide a fairly general problem framework accounting for different crane systems and various side constraints. We assume a cost function for each task that determines the cost of completing the task at a specific point in time. We then distinguish between the objectives to minimize both the total cost and the maximum cost among tasks. A general dynamic programming framework is provided which allows us to solve all problem versions in pseudo-polynomial time. Furthermore, we show that while the general problem aiming for minimum total cost is binary NP-hard, the general problem aiming for minimum maximum cost can be solved in polynomial time. Finally, we address two important special cases of the former, and we show that they can be solved in polynomial time as well.

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Malinowski, Kathleen, Thomas J. McAvoy, Rohini George, Sonja Dieterich, and Warren D. D'Souza. "Maintaining tumor targeting accuracy in real-time motion compensation systems for respiration-induced tumor motion." Medical Physics 40, no. 7 (June 11, 2013): 071709. http://dx.doi.org/10.1118/1.4808119.

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