Letteratura scientifica selezionata sul tema "Servo task"
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Articoli di riviste sul tema "Servo task":
1
Yu, Sui Ran, e Yun Wei Lu. "Design Task Decomposition in the Servo Press". Applied Mechanics and Materials 34-35 (ottobre 2010): 1966–72. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.1966.
Abstract (sommario):
This research is to find a design method for the large scale and complex product system. Thus, we made an approach to possibly better solution with limited time, limited resources and limited costs. This paper aims to find a method to quantify the solving process of the first stage in the concurrent design – “task decomposition”, in order to make preparations necessary for the next two stages -“concurrent task process” and “convergent coordination”. According to product's functional unit, we first decentralized complex product system into sub-modules. Then determine the importance and coherence among these sub-modules by using analytic hierarchy (AHP). Combining the results of the two judgments, we further classify the sub-modules to form distributed sub-systems, so that different design teams can work more effectively and more efficiently during their respective period. Finally, we verify the usefulness and effectiveness of the distributed method with an example of design task decomposition in servo press.
2
Yu, Sui Ran, e Yun Wei Lu. "Design Task Decomposition in the Servo Press". Applied Mechanics and Materials 34-35 (ottobre 2010): 981–87. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.981.
Abstract (sommario):
This research is to find a design method for the large scale and complex product system. Thus, we made an approach to possibly better solution with limited time, limited resources and limited costs. This paper aims to find a method to quantify the solving process of the first stage in the concurrent design – “task decomposition”, in order to make preparations necessary for the next two stages -“concurrent task process” and “convergent coordination”. According to product's functional unit, we first decentralized complex product system into sub-modules. Then determine the importance and coherence among these sub-modules by using analytic hierarchy (AHP). Combining the results of the two judgments, we further classify the sub-modules to form distributed sub-systems, so that different design teams can work more effectively and more efficiently during their respective period. Finally, we verify the usefulness and effectiveness of the distributed method with an example of design task decomposition in servo press.
3
Castano, A., e S. Hutchinson. "Visual compliance: task-directed visual servo control". IEEE Transactions on Robotics and Automation 10, n. 3 (giugno 1994): 334–42. http://dx.doi.org/10.1109/70.294208.
4
Liu, Dong, Ming Cong, Yu Du, Yunfei Zhang e Clarence W. de Silva. "Visual attention servo control for task-specific robotic applications". International Journal of Control, Automation and Systems 11, n. 6 (29 novembre 2013): 1241–52. http://dx.doi.org/10.1007/s12555-012-9505-6.
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Molitor, Dirk Alexander, Viktor Arne, Daniel Spies, Florian Hoppe e Peter Groche. "Task space control of ram poses of multipoint Servo Presses". Journal of Process Control 129 (settembre 2023): 103057. http://dx.doi.org/10.1016/j.jprocont.2023.103057.
6
Lou, Jingjing. "Predictive Control-Based Completeness Analysis and Global Calibration of Robot Vision Features". Computational Intelligence and Neuroscience 2021 (9 dicembre 2021): 1–12. http://dx.doi.org/10.1155/2021/7241659.
Abstract (sommario):
This paper provides an in-depth study and analysis of robot vision features for predictive control and a global calibration of their feature completeness. The acquisition and use of the complete macrofeature set are studied in the context of a robot task by defining the complete macrofeature set at the level of the overall purpose and constraints of the robot vision servo task. The visual feature set that can fully characterize the macropurpose and constraints of a vision servo task is defined as the complete macrofeature set. Due to the complexity of the task, a part of the features of the complete macrofeature set is obtained directly from the image, and another part of the features is obtained from the image by inference. The task is guaranteed to be completely based on a robust calibration-free visual serving strategy based on interference observer that is proposed to complete the visual serving task with high performance. To address the problems of singular values, local minima, and insufficient robustness in the traditional scale-free vision servo algorithm, a new scale-free vision servo method is proposed to construct a dual closed-loop vision servo structure based on interference observer, which ensures the closed-loop stability of the system through the Q-filter-based interference observer, while estimating and eliminating the interference consisting of hand-eye mapping model uncertainty and controlled robot input interference. The equivalent interference consisting of hand-eye mapping model uncertainty, controlled robot input interference, and detection noise is estimated and eliminated to obtain an inner-loop structure that presents a nominal model externally, and then an outer-loop controller is designed according to the nominal model to achieve the best performance of the system dynamic performance and robustness to optimally perform the vision servo task.
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Chesi, Graziano, e Koichi Hashimoto. "Configuration and Robustness in Visual Servo". Journal of Robotics and Mechatronics 16, n. 2 (20 aprile 2004): 178–85. http://dx.doi.org/10.20965/jrm.2004.p0178.
Abstract (sommario):
Effects of camera calibration errors on the point-to-point task are investigated in static-eye and hand-eye visual servoing realized with position-based and image-based control laws. For these four configurations, the effect of uncertainty on the extrinsic parameters is analyzed. The results show local stability for all configurations under small calibration errors. However, a steady state error is found in the hand-eye position-based configuration. Simulations have been done to confirm the theoretical results and evaluate the effects of the uncertainty in terms of stability region. Another contribution of the paper consists of providing a method for estimating the stability region robust against uncertainty directions for the static-eye position-based case with uncertainty on the camera centers.
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Feemster, Matthew, Jenelle A. Piepmeier, Harrison Biggs, Steven Yee, Hatem ElBidweihy e Samara L. Firebaugh. "Autonomous Microrobotic Manipulation Using Visual Servo Control". Micromachines 11, n. 2 (24 gennaio 2020): 132. http://dx.doi.org/10.3390/mi11020132.
Abstract (sommario):
This describes the application of a visual servo control method to the microrobotic manipulation of polymer beads on a two-dimensional fluid interface. A microrobot, actuated through magnetic fields, is utilized to manipulate a non-magnetic polymer bead into a desired position. The controller utilizes multiple modes of robot actuation to address the different stages of the task. A filtering strategy employed in separation mode allows the robot to spiral from the manipuland in a fashion that promotes the manipulation positioning objective. Experiments demonstrate that our multiphase controller can be used to direct a microrobot to position a manipuland to within an average positional error of approximately 8 pixels (64 µm) over numerous trials.
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Qiu, Yu, Baoquan Li, Wuxi Shi e Yimei Chen. "Concurrent-learning-based visual servo tracking and scene identification of mobile robots". Assembly Automation 39, n. 3 (5 agosto 2019): 460–68. http://dx.doi.org/10.1108/aa-02-2018-024.
Abstract (sommario):
PurposeThe purpose of this paper is to present a visual servo tracking strategy for the wheeled mobile robot, where the unknown feature depth information can be identified simultaneously in the visual servoing process.Design/methodology/approachBy using reference, desired and current images, system errors are constructed by measurable signals that are obtained by decomposing Euclidean homographies. Subsequently, by taking the advantage of the concurrent learning framework, both historical and current system data are used to construct an adaptive updating mechanism for recovering the unknown feature depth. Then, the kinematic controller is designed for the mobile robot to achieve the visual servo trajectory tracking task. Lyapunov techniques and LaSalle’s invariance principle are used to prove that system errors and the depth estimation error converge to zero synchronously.FindingsThe concurrent learning-based visual servo tracking and identification technology is found to be reliable, accurate and efficient with both simulation and comparative experimental results. Both trajectory tracking and depth estimation errors converge to zero successfully.Originality/valueOn the basis of the concurrent learning framework, an adaptive control strategy is developed for the mobile robot to successfully identify the unknown scene depth while accomplishing the visual servo trajectory tracking task.
10
Yuksel, Tolga. "Sliding Surface Designs for Visual Servo Control of Quadrotors". Drones 7, n. 8 (14 agosto 2023): 531. http://dx.doi.org/10.3390/drones7080531.
Abstract (sommario):
Autonomy is the main task of a quadrotor, and visual servoing assists with this task while providing fault tolerance under GPS failure. The main approach to visual servoing is image-based visual servoing, which uses image features directly without the need for pose estimation. The classical sliding surface design of sliding mode control is used by the linear controller law of image-based visual servoing, and focuses only on minimizing the error in the image features as convergence. In addition to providing convergence, performance characteristics such as visual-feature-convergence time, error, and motion characteristics should be taken into consideration while controlling a quadrotor under velocity limitations and disturbance. In this study, an image-based visual servoing system for quadrotors with five different sliding surface designs is proposed using analytical techniques and fuzzy logic. The proposed visual servo system was simulated, utilizing the moment characteristics of a preset shape to demonstrate the effectiveness of these designs. The stated parameters, convergence time, errors, motion characteristics, and length of the path, followed by the quadrotor, were compared for each of these design approaches, and a convergence time that was 46.77% shorter and path length that was 6.15% shorter were obtained by these designs. In addition to demonstrating the superiority of the designs, this study can be considered as a reflection of the realization, as well as the velocity constraints and disturbance resilience in the simulations.
Tesi sul tema "Servo task":
1
Rodriguez, Martinez Eder. "Navigation robotique basée tâches d'asservissement et mémoire sensorielle". Electronic Thesis or Diss., Amiens, 2020. http://www.theses.fr/2020AMIE0065.
Abstract (sommario):
Les robots sont capables d'effectuer un vaste groupe de tâches comme la surveillance, la cartographie et la navigation. Cette thèse est principalement consacrée à l'étude de la dernière tâche qui est définie grossièrement comme la capacité d'atteindre un groupe de poses dans l'environnement. Cette thèse présente trois contributions qui effectuent la navigation robotique, et elles sont présentées ci-dessous : - La première d'entre elles considère la navigation à l'aide d'une caméra monoculaire ; par conséquent, elle appartient à la classification des systèmes de navigation basée-vision (ou VBNS en anglais). Ce système s'appelle Instruction & Répétition Photométriques (ou PT&R en anglais) car il est basé sur le paradigme teach-repeat et l'Asservissement Visuel Photométrique (ou PVS en anglais) pour traiter le problème de la navigation. La nouveauté dans PT&R est qu'il génère de manière autonome sa mémoire visuelle à partir d'un modèlepréalable de la scène, qui est un maillage texturé. Cette mémoire est utilisée comme référence pour naviguer et elle est comparée avec les images acquises par la caméra embarquée pour contrôler le robot. Même si les manipulations surPT&R démontrent qu'un drone est capable de naviguer en utilisant la mémoire visuelle, la génération de cette dernière est limitée à la ligne droite et n'explore pas d'autres chemins. - La deuxième contribution est un VBNS inspiré par PT&R, appelé système de navigation photométrique (ou PNS en anglais). La principale différence entre PNS et PT&R est que le premier système explore d'autres chemins que la ligne droite en utilisant une approche topologique. De plus, une navigation simulée évalue la navigabilité d'un chemin représenté par la mémoire visuelle. Le succès des expérimentations de PNS a montre son efficacité à planifier de façon autonome un chemin navigable en utilisant le maillage texturé et à naviguer au sein de la scène. PNS est considéré comme une contribution majeure de la thèse. - La troisième contribution, également considérée comme une contribution majeure, est une généralisation du PNS qui comprend une grande variété de capteurs et de modèles de scène. Cette architecture est appelée Architecture de Navigation par Asservissement (ou SNA en anglais) car elle aborde le problème de navigation en concevant ce problème comme une concaténation de tâches successives de positionnement en utilisant une mémoire sensorielle comme référenceRobots are able to perform a vast group of tasks such as surveillance, mapping and navigation. This thesis focuses on the latter task which can be roughly defined as the ability of reaching a group of poses in the environment. This document presents three contributions that perform robotic navigation, which are introduced below : - The first of them is a system that navigates using a monocular camera; therefore, it belongs to the classification of the Vision-Based Navigation Systems (VBNS). Such system is called Photometric Teach & Repeat (PT&R) since it is based on the teach-repeat paradigm and Photometric Visual Servoing (PVS) to tackle the problem of navigation. The novelty in PT&R is that it autonomously generates its visual memory from a preobtained model of the scene, which is a textured mesh. This memory is used as reference to navigate and it is compared with the onboard measurements, acquired by the onboard camera, to control the robot. Although the experiments on PT&R demonstrated that the system is able to navigate using the visual memory, the generation of the latter is limited to thestraight line and does not explore other paths. - The second contribution is a VBNS inspired by PT&R, called the PhotometricNavigation System (PNS). The main difference between PNS and PT&R is that the former system explores other paths than the straight line using a topological approach. Furthermore, a simulated navigation evaluates the navigability of the path depicted by the visual memory. The success of the experiments’ results of PNS demonstrated its efficacy to autonomously plan a navigable path using the textured mesh and to navigate over the scene. PNS is considered a major contribution of the thesis.- The third contribution, also considered as major contribution, is a generalization of PNS which comprises a wide variety of sensors and models of the scene. This framework is called the Servo Navigation Architecture (SNA) as it tackles the navigation problem by conceiving the latter as a concatenation of successives positioning tasks using a sensory memory as reference
2
Garner, Frederick. "The modelling and control of rate gyroscope stabilisation systems, applied to the servos in Armoured Fighting Vehicle turrets". Thesis, Staffordshire University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302552.
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Lei, Shih-Chuan, e 雷仕全. "Implementation of Real-Time Multi-Task Control for DSP-based Motion Control Card and Compensation of Cogging Force in Servo Motor". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/25052361326510120049.
Abstract (sommario):
碩士國立交通大學
機械工程系所
94
In this thesis, develop a real-time multi-task motion control card in digital signal processor and µC/OS-II kernel. At part of the PC, using Borland C++ 6.0 to develop a GUI which communicates with motion control card. At part of the DSP, the softeware development environment is at TI’s Code Composer v3.0. Implemention of the real-time command generation, acceleration and deceleration profile planning, blended trajectory planning and Adaptive Robust Control. Adaptive Robust Control possesses two advantages of adaptive and robust. Use the two advantages to design a servo loop controller and to suppress the effect of cogging force. In this thesis will discuss the suppress result of the adaptive robust controller at the effect of cogging foce.
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Huang, Chen-Hsiung, e 黃震雄. "The Examination of Constraints on Badminton Backhand Flick Serve – Focusing on Task Constraints". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/agg9a4.
Abstract (sommario):
碩士國立臺灣師範大學
體育學系
105
This research examines the effect of imposing task constraints on the badminton backhand flick serve. The following experimental conditions were implemented: Restricted net ranges, variable net heights, and variable serving distances from the net. Different skillfulness participants in badminton were asked to complete backhand flick serves under each experimental condition in order to analyze the effect of constraints on control and coordination and reveal some guidelines for future badminton training. Participants in this study were ages from 12 to 17. Twelve were well trained, and twelve were taught only by PE curriculum. Experimental results were analyzed using Two-way Mixed Design ANOVA with a significance level of α = .05 and shown as follows: 1) The test of interaction between different net ranges and skillfulness is insignificant. In the main effect test, it is significant in serving error rates for different net ranges, while there is no significance in serving accuracy rate for the constraint of restricted net ranges. 2) For the test of interaction between serving distances and skillfulness, it is significant in serving accuracy rate. In the simple main effect test, for the unskilled participants, the serving distances matter significantly, while there is no significance for the skilled participants. In terms of serving error rate, it is insignificant for the test of interaction between serving distances and skillfulness, while it is significant in the main effect test. 3) For the test of interaction between net heights and skillfulness, it is insignificant in serving accuracy rate. It is also insignificant in the main effect test by changing the net height. In terms of serving error rate, it is significant for the test of interaction between net heights and skillfulness. In the following simple main effect test, there is no significance between the net heights and skillfulness. Conclusions are: 1) The constraint of net range could increase the serving error rate, but not affect the serving accuracy rate. 2) Skilled participants demonstrated better accuracy rate and lower error rate than unskilled ones. Their accuracy was less affected by the constraints of net ranges, serving distances, and net heights. The unskilled participants are likely to be affected by task constraints in serving accuracy and serving error.
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Paulo, Ana Margarida do Amaral. "Decision making in volleyball’s serve reception". Doctoral thesis, 2017. http://hdl.handle.net/10400.5/15029.
Abstract (sommario):
We aimed at investigating decision making in volleyball serve-reception. Grounded in the ecological dynamics framework, we focused on task constraints. First, in a systematic review we discussed the relevance of functionally-relevant tasks for performance analysis.
This notion was developed with respect to relevant sources of constraint and behavioral variables for team sports performance analysis in general, and for volleyball in particular.
Next, in an observational study of an expert-level competition we showed that, in serve-reception, adaptive flexibility in action-mode selection relates to competitive outcomes.
The three experimental studies that followed involved manual-tracking of ball and receiver(s) and 3D world-coordinates reconstruction. First, we used an individual serve-reception task, in two delimited zones on-court. The receiver’s initial position was the stronger predictor of the action mode selected and for the effectiveness of the serve-
reception. In a second study we used a three-man serve-reception task. The definition of the receivers’ reception-areas at the ecological scale was highly accurate in selecting “who” receives a given serve. Also, variables related to the serve, and to the relative position of the receiver, of other receivers, the ball, and the target contributed to a very strong model for action-mode selection. Furthermore, only the underhand-lateral pass, not the overhand or the underhand-frontal passes, increased the odds of less effective serve-receptions. A final experimental study focused on both the individual (receiver) and the group (three-receivers-system) levels of analysis of serve-reception performance.
Receivers were differently constrained, individually and collectively, by relevant sources of constraint (on-court position, role, and serve mode). Adaptation to the task at the individual (initial position) and at the collective (receiver area) levels allowed the prediction of the action-mode selected but not reception efficacy. Overall, adaptive flexibility, through action mode selection, was supported as a way to deal with task constrains in order to remain effective.Com a dinamica ecologica como referencial teorico, estudamos a influencia dos constrangimentos da tarefa na tomada de decisao na recepcao ao servico em voleibol. Primeiro, numa revisao sistematica da literatura discutimos a relevancia de tarefas funcionalmente relevantes. Esta nocao foi desenvolvida quanto a fontes de constrangimento e variaveis comportamentais relevantes para a analise da performance em desportos de equipa em geral, e no voleibol em particular. Seguidamente, num estudo observacional de uma competicao de peritos, mostramos, para a recepcao ao servico, que a flexibilidade adaptativa na seleccao do modo de accao se associa ao resultado competitivo. Nos tres estudos experimentais que se seguiram digitalizamos manualmente a bola e o(s) recebedor(es), e subsequentemente reconstruimos em 3D as suas coordenadas reais. Numa tarefa de recepcao individual, em duas zonas delimitadas no campo, a posicao inicial do recebedor foi o maior preditor do modo de accao seleccionado e da eficacia da recepcao ao servico. Numa segunda tarefa com tres recebedores, a definicao das areas de recepcao a escala ecologica foi altamente precisa na seleccao de “quem” recebe o servico. Variaveis relacionadas com o servico e com a relacao do receptor com outros recebedores, com a bola e com o alvo contribuiram para um forte modelo de seleccao do modo de accao. Ainda, a manchete-lateral, nao o passe ou a manchete-frontal, aumentou as chances de recepcoes do servico menos eficazes. Por ultimo,abordamos ambos os niveis de analise individual (receptor) e grupal (sistema de tres receptores) na recepcao ao servico. Os receptores foram constrangidos diferentemente, individual e colectivamente, por fontes de constrangimento relevantes (posicao no campo, papel, e tipo de servico). A adaptacão individual (posicao individual) e colectiva (area de recepcao) a tarefa permitiu a predicao do modo de accao seleccionado mas nao da eficacia da recepcao ao servico. No geral,a flexibilidade adaptativa atraves da seleccao do modo de accao, demonstrou ser uma forma de lidar com os constrangimentos da tarefa no sentido de manter a eficácia.
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Hsu, Yu-Cheng, e 許裕呈. "A study on the willing to serve, role stress and performance among the teachers with administrative task in pingtung elementary schools". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/38119892878806282774.
Abstract (sommario):
碩士致遠管理學院
教育研究所
97
This study took the teachers who also take charge of administrative task in Pingtung elementary schools as targeted population to investigate the current state of their working performance, roll stress and how their willing to serve and associate with their performance. The study used questionnaire investigation as research method. A sample totaled 426 teachers were selected with“stratificational random sampling”from elementary schools located in Pingtung country. Then all of them were asked to fill a questionnaire which was constructed by this researcher entitled as. The questionnaire of willing to serve, role stress and working performance as research instruments One-way ANOVA, Pearson product-moment correlation, t test, F test and regression analysis in addition to the basic statistic were employed for analyzing. According the research findings＆conclusions were drawn as follows: 1. As to the willing to serve, role pressure and working performance, there were significant differences with different background variables among teachers who also take charge of administrative task in Pingtung elementary schools . 2. The willing to serve among those teachers who also take charge of administrative task in Pingtung elementary schools was on middle level. It was influenced most by the aspect of “personal factors”. 3. The role pressure among those teachers who also take charge of administrative task in Pingtung elementary schools was on middle level, and the highest pressure came from “role overloading”. 4. Their working performance among was on middle level again, and the best performance came from “working quality”. 5. There was a positive correlation between overall willing to serve and working performance, and the working performance among those teachers with high willing to serve was significantly higher than that of teachers with lower willing to serve. 6. There was a positive correlation between overall willing to serve and role pressure, and the role pressure among those teachers with high willing to serve were significantly higher than that of teachers with lower willing to serve. 7. There was positive correlation between overall role pressure and working performance, and the working performance among those teachers with higher role pressure were significantly lower than that of teachers with lower role pressure. 8. The working performance of those teachers who also take charge of administrative task could be predicted by each stratified aspect of their willing to serve and the level of “role ambiguity” in role pressure. In the end, the study would provide some suggestions based on afore-mentioned conclusions for elementary teachers who also take charge of administrative task, educational authority and future researchers.
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Amiri, Mohammad Sadegh. "Robustness versus performance tradeoffs in PID tuning". Master's thesis, 2009. http://hdl.handle.net/10048/647.
Abstract (sommario):
Thesis (M. Sc.)--University of Alberta, 2009.Title from pdf file main screen (viewed on Dec. 10, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Chemical Engineering, Department of Chemical and Materials Engineering, University of Alberta." Includes bibliographical references.
Libri sul tema "Servo task":
1
National Institute of Standards and Technology (U.S.), a cura di. Manipulator servo level task decomposition. Gaithersburg, MD: U.S. Dept. of Commerce, National Institute of Standards and Technology, 1988.
2
Blagin, Anatoliy, e Ol'ga Kotova. Astronomy. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1083410.
Abstract (sommario):
Summarize the introductory course of astronomy, given the latest scientific data about space. Each section provides examples of tasks and tasks for independent work of students. Are regarded as standard tasks and Olympiad so the tutorial can also serve as a guide for solving problems of high complexity.
Designed for students in secondary vocational education. It may be useful to the students of gymnasiums, secondary schools and Junior students of universities and teachers of natural science disciplines. Can also be used for self-education.
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Tancred, Tim. The operation of a reject reduction task force on zero lost travel brake servos at Lucas C. B. S. Pontypool Gwent. London: PEL, 1991.
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Bagdasaryan, Vardan. Leadership. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1086964.
Abstract (sommario):
The study of the course "Leadership" is associated with an increasing demand for the formation and disclosure of human leadership potentials. The presented textbook allows you to carry out this work in a targeted way. It summarizes and systematizes the world experience in the development of the theory and practice of leadership, discusses the classification of types of leaders, issues of practical use in leadership scenarios of personal qualities of a person, and offers a methodology for developing team strategies and team building. The distinctive features of the proposed program are its adaptability to the socio-cultural context of Russian society and its strong connection with the task of training the future generation of leaders in the interests of the Russian state. Each of the sections of the textbook is accompanied by practical tasks, the solution of which develops the skills of self-knowledge of a person in the perspective of developing leadership potentials and understanding the variability of leadership strategies. It is focused primarily on the preparation of bachelors studying in pedagogical areas of training, but it can also serve as a basic source for training in the course "Leadership" within the framework of a bachelor's degree in the humanities and the direction of social sciences.
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Untermann, Richard K. Linking land use and transportation: Design strategies to serve HOVs and pedestrians : final report, Research Project GC 8719, Task 39, HOV Lane Use Issues on Arterials. [Olympia, Wash.?]: Washington State Dept. of Transportation, Washington State Transportation Commission in cooperation with U.S. Dept. of Transportation, Federal Highway Administration, 1991.
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Educational Resources Information Center (U.S.), a cura di. Real talk: A national interstate and intrastate linkage system to identify and serve migrant dropout youth : volume 12-16, October 1988-December 1993. [Washington, DC]: U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center, 1993.
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Massachusetts Task Force on Preservation and Access. Preserved to serve: The Massachusetts preservation agenda : the report of the Massachusetts Task Force on Preservation and Access to the library, archives, public records, and governmental communities and the citizens of Massachusetts. Boston (648 Beacon Street, Boston 02215-2070): Massachusetts Board of Library Commissioners, 1992.
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Starkman, Neal. Walking Your Talk: Building Assets in Organizations that Serve Youth. Search Institute Press, 2002.
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Ventura, Steve. Serve Right: Everyone's Straight-Talk Guide to Customer Service Success. Performance Systems Corporation, 2009.
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Ventura, Steve. Serve Right: Everyone's Straight-Talk Guide to Customer Service Success. Performance Systems Corporation, 2009.
Capitoli di libri sul tema "Servo task":
1
Stückler, Jörg, e Sven Behnke. "Compliant Task-Space Control with Back-Drivable Servo Actuators". In Lecture Notes in Computer Science, 78–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32060-6_7.
2
Biermann, Daniel, Morten Goodwin e Ole-Christoffer Granmo. "Knowledge Infused Representations Through Combination of Expert Knowledge and Original Input". In Communications in Computer and Information Science, 3–15. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-17030-0_1.
Abstract (sommario):
AbstractSophisticated applications in natural language processing, such as conversational agents, often need to be able to generalize across a range of different tasks to generate natural-feeling language. In this paper, we introduce a model that aims to improve generalizability with regard to different tasks by combining the original input with the output of a task-specific expert. Through a combination mechanism, we create a new representation that has been enriched with the information given by the expert. These enriched representations then serve as input to a downstream model. We test three different combination mechanisms in two combination paradigms and evaluate the performance of the new enriched representation in a simple encoder-decoder model. We show that even very simple combination mechanisms are able to significantly improve performance of the downstream model. This means that the encoded expert information is transported through the new enriched input representation, leading to a beneficial impact on performance within the task domain. This opens the way for exciting future endeavors such as testing performance on different task domains and the combination of multiple experts.
3
Zhang, Puheng, Chuang Lin, Wenzhuo Li e Xiao Ma. "Long-Term Multi-objective Task Scheduling with Diff-Serv in Hybrid Clouds". In Lecture Notes in Computer Science, 243–58. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68783-4_17.
4
Alciati, Roberto. "Il lavoro dei monaci nelle regole monastiche latine (IV-IX sec.)". In Idee di lavoro e di ozio per la nostra civiltà, 189–97. Florence: Firenze University Press, 2024. http://dx.doi.org/10.36253/979-12-215-0319-7.23.
Abstract (sommario):
In the Latin monastic rules (IV-XI centuries), manual labor is always understood as that undertaken by the monk to counteract idleness and sloth, that is, with a noneconomic purpose. Manual labor contributes to spiritual growth, but it is different from work for the sustenance of the community. The purpose of this contribution is to clarify this difference, beginning with the famous motto ora et labora (par. 1). In fact, only after this clarification is it possible to understand how the early Christian monk is above all a spiritual “inoperative,” who is explicitly precluded from those tasks that serve the livelihood of the monastery (par. 2). The only labor worthy of the name is the opus Dei (par. 3.), while others, mostly lay people, are entrusted with the task of put the community’s assets to good use (par. 4.).
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Ribeiro, Leandro Batista, Florian Lorber, Ulrik Nyman, Kim Guldstrand Larsen e Marcel Baunach. "A Modeling Concept for Formal Verification of OS-Based Compositional Software". In Fundamental Approaches to Software Engineering, 26–46. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30826-0_2.
Abstract (sommario):
AbstractThe use of formal methods to prove the correctness of compositional embedded systems is increasingly important. However, the required models and algorithms can induce an enormous complexity. Our approach divides the formal system model into layers and these in turn into modules with defined interfaces, so that reduced formal models can be created for the verification of concrete functional and non-functional requirements. In this work, we use Uppaal to (1) model an RTOS kernel in a modular way and formally specify its internal requirements, (2) model abstract tasks that trigger all kernel functionalities in all combinations or scenarios, and (3) verify the resulting system with regard to task synchronization, resource management, and timing. The result is a fully verified model of the operating system layer that can henceforth serve as a dependable foundation for verifying compositional applications w.r.t. various aspects, such as timing or liveness.
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Estrada, Laura Mesa, Martina Haase, Manuel Baumann e Tim Müller. "Multicriteria Decision Analysis for Sustainability Assessment for Emerging Batteries". In The Materials Research Society Series, 307–34. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-48359-2_18.
Abstract (sommario):
AbstractMulticriteria decision-making theory has been widely used for sustainability assessment in the context of energy management. Although it is not a simple task, requirements are available in the literature to guide analysts performing this type of assessments. When it comes to emerging technologies, specific conditions such unknown impacts, lack of data, high uncertainty, etc., can increase the complexity of the task. Here we present an overview of the concepts of MCDA sustainability assessment, examples of existing studies in the field of energy storage, and a use case for the sustainability assessment of early-stage cathode materials for sodium ion batteries using PROMETHEE II. The results in this type of assessment serve as an indicative for further research and development of specific technologies/materials. Factors such as the availability of data and dynamic social contexts (e.g., political priorities) make sustainability assessments an iterative process. Systematic approaches and specialized MCDA software are necessary to support this task.
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Majchrowska, Sylwia, Jarosław Pawłowski, Natalia Czerep, Aleksander Górecki, Jakub Kuciński e Tomasz Golan. "Deep Neural Networks Approach to Microbial Colony Detection—A Comparative Analysis". In Digital Interaction and Machine Intelligence, 98–106. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11432-8_9.
Abstract (sommario):
AbstractCounting microbial colonies is a fundamental task in microbiology and has many applications in numerous industry branches. Despite this, current studies towards automatic microbial counting using artificial intelligence are hardly comparable due to the lack of unified methodology and the availability of large datasets. The recently introduced AGAR dataset is the answer to the second need, but the research carried out is still not exhaustive. To tackle this problem, we compared the performance of three well-known deep learning approaches for object detection on the AGAR dataset, namely two-stage, one-stage, and transformer-based neural networks. The achieved results may serve as a benchmark for future experiments.
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Gopinath, Divya, Luca Lungeanu, Ravi Mangal, Corina Păsăreanu, Siqi Xie e Huanfeng Yu. "Feature-Guided Analysis of Neural Networks". In Fundamental Approaches to Software Engineering, 133–42. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30826-0_7.
Abstract (sommario):
AbstractApplying standard software engineering practices to neural networks is challenging due to the lack of high-level abstractions describing a neural network’s behavior. To address this challenge, we propose to extract high-level task-specific features from the neural network internal representation, based on monitoring the neural network activations. The extracted feature representations can serve as a link to high-level requirements and can be leveraged to enable fundamental software engineering activities, such as automated testing, debugging, requirements analysis, and formal verification, leading to better engineering of neural networks. Using two case studies, we present initial empirical evidence demonstrating the feasibility of our ideas.
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Yang, Cheng-Xiang, e Yen-Liang Lin. "Chapter 9. Multimodal story-retelling". In Studies in Bilingualism, 232–53. Amsterdam: John Benjamins Publishing Company, 2024. http://dx.doi.org/10.1075/sibil.66.09yan.
Abstract (sommario):
Cognitive load has been shown to influence speakers’ gesture production, but how it effects the duration, form, and functions of gestures is not yet well understood. This study examines how increased cognitive load influenced the production of co‑speech and co‑thought gestures by second language (L2) learners, and further looks at how different types of gestures correspond to specific functions. Twenty-four English as an L2 participants were recruited and required to watch a pre-determined cartoon and then retell the story in English. Participants were divided into two cognitive load conditions for the story retelling: one group was given a task structure for story retelling, while the other was not. The results of this study show that enhancing cognitive load significantly increased the frequency of both co‑speech and co‑thought gestures and the duration of co‑speech gestures, but not co‑thought gestures. With regard to the correspondence of gesture types and their functions for conceptualization (i.e., activation, manipulation, packaging, exploration), this study found co‑speech and co‑thought gestures serve different functions in L2 narrative tasks. Activation is dominant in every type of co‑speech gesture, especially in iconic and metaphoric gestures. Deictic gestures mostly function for packaging and exploration and co‑thought gestures for exploration and manipulation. This study provides necessary clarification on the relationship between cognitive load and gestures, including novel interactions of gesture duration and functions of gestures for conceptualization.
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Kaster, Thomas, Marc Ackermann, David Bailly, Marie-Noemi Bold, Thomas Bremen, Thomas Eberius, Cailing Fu et al. "Enablers and Tools for Agile Product Development". In Internet of Production, 1–21. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-98062-7_18-1.
Abstract (sommario):
AbstractToday’s industrial world is characterized by ever-shortening product development cycles and increasing degrees of product individualization which demand tools and enablers for accelerated prototyping. In addition, the existing uncertainty in the product development cycle should be reduced by involving stakeholders as early as possible. However, should an engineering change request (ECR) be necessary in the product development cycle, a fast iteration step into production is inevitable. The methodological description of such an ECR in the product development cycle is described in the previous chapter. Together with researchers from the Internet of Production (IoP), information from the product development process will be transferred to the digital shadow established in the IoP. The digital shadow collects information from all areas of the product lifecycle and provides it to the appropriate departments, adapted to the corresponding task. To tackle this challenge, a new type of product development process, the method of agile product development, is applied. Within the Enablers and Tools project, the development of various advanced manufacturing technologies (AMTs) for agile product development are at the forefront of the work. The enablers and tools are further developed with the principles of agile product development. They also serve to map the requirements for rapidly available and specific prototypes which are used to answer specific questions that arise during the product development cycle. To answer these questions, the concept of the Minimum Viable Product (MVP), an approach to reduce development time and increase customer satisfaction, is introduced and applied to all development tasks.
Atti di convegni sul tema "Servo task":
1
Li, Shipeng, Di Li e Juan Wang. "A Continuous Control Method for Task Stability of Visual Servo System". In ICCIR 2021: 2021 International Conference on Control and Intelligent Robotics. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3473714.3473754.
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Hansen, Christian, Kai Eggers, Jens Kotlarski e Tobias Ortmaier. "Task Specific Trajectory Profile Selection for Energy Efficient Servo Drive Movements". In 31st International Symposium on Automation and Robotics in Construction. International Association for Automation and Robotics in Construction (IAARC), 2014. http://dx.doi.org/10.22260/isarc2014/0068.
3
Jong Kwang Lee, Kiho Kim, Byung Suk Park e Ji Sup Yoon. "Force-reflecting servo-manipulators for remote handling task in a radioactive environment". In 2007 International Conference on Control, Automation and Systems. IEEE, 2007. http://dx.doi.org/10.1109/iccas.2007.4407048.
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Rotithor, Ghananeel, e Ashwin P. Dani. "Combining Motion Primitives and Image-Based Visual Servo Control". In 2020 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/isfa2020-9660.
Abstract (sommario):
Abstract Combining perception feedback control with learning-based open-loop motion generation for the robot’s end-effector control is an attractive solution for many robotic manufacturing tasks. For instance, while performing a peg-in-the-hole or an insertion task when the hole or the recipient part is not visible in the eye-in-the-hand camera, an open-loop learning-based motion primitive method can be used to generate end-effector path. Once the recipient part is in the field of view (FOV), visual servo control can be used to control the motion of the robot. Inspired by such applications, this paper presents a control scheme that switches between Dynamic Movement Primitives (DMPs) and Image-based Visual Servo (IBVS) control combining end-effector control with perception-based feedback control. A simulation result is performed that switches the controller between DMP and IBVS to verify the performance of the proposed control methodology.
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Zhang, Heng, Yichi Zhang, Zhenhua Xiong, Xinjun Sheng e Xiangyang Zhu. "A Task-Priority Coordinated Motion Planner Combined with Visual Servo for Mobile Manipulator*". In 2019 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM). IEEE, 2019. http://dx.doi.org/10.1109/aim.2019.8868347.
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Kova´cs, La´szlo´ L., Jo´zsef Ko¨vecses, Ambrus Zelei, La´szlo´ Bencsik e Ga´bor Ste´pan. "Servo-Constraint Based Computed Torque Control of Underactuated Mechanical Systems". In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48533.
Abstract (sommario):
This paper aims to generalize the computed torque control method for underactuated systems which are modeled by a non-minimum set of generalized coordinates subjected to geometric constraints. The control task of the underactuated robot is defined in the form of servo constraint equations that have the same number as the number of independent control inputs. A PD controller is synthesized based on projecting the equations of motion into the nullspace of the distribution matrix of the actuator forces/torques. The results are demonstrated by numerical simulation and experiments conducted on a two degrees-of-freedom device.
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Andersen, Torben Ole, e Michael R. Hansen. "Automated Sizing Procedure of Servo-Driven Robot for Pallettes Handling". In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62409.
Abstract (sommario):
A procedure for the automated sizing of spatial servo mechanisms is presented. The design performance is measured by means of a work task moving a payload from one point to another within a certain time. The design variables are composed of continuous and discrete parameters with the latter associated with the servo motor and planetary gears making up the servo drive. The costs are identified as the main objective for minimization whereas a number of side constraints related to accuracy, fatigue, vibrations and thermal conditions are presented and formulated mathematically. The two-level design procedure generates design from a motor and gear database that a subsequently subjected to minimization with a view to eliminate any constraint violations. The least costly of the feasible design are considered the optimal.
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Andersen, Torben Ole, e Michael Ryygaard Hansen. "An Robust Adaptive Control Scheme for Hydraulic Servo Systems". In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14610.
Abstract (sommario):
The paper looks into Model Reference Adaptive Control (MRAC) based on a linear plant model with constant or slowly varying parameters. The actual plant is non-linear, of a higher model order, subjected to time-varying bounded disturbances, and the measured values may be corrupted by noise. These problems are explored and the adaptive algorithms are modified to counteract instability mechanisms and for improved robustness with respect to bounded disturbances and non-modeled dynamics. The adaptive controller identifies the dominant dynamics and uses feedforward to provide anticipative actions in tracing task while an adaptive feedback part stabilizes the tracking error dynamics. Also the effects of non-modeled high frequency dynamics and bounded disturbances on stability and performance are analyzed. The adaptive control scheme is robust in the sense that it guarantees the existence of a large region of attraction from which all the trajectories remain bounded. The size of the region of attraction depends on the non-modeled dynamics in such a way that if the non-modeled dynamics is infinitely fast, the region of attraction becomes the whole space. Simulation and experimental results are presented and discussed to demonstrate the strength of the proposed algorithm.
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Banfield, Ilka, Roque J. Saltaren, Lisandro J. Puglisi e Rafael Aracil Santonja. "Hybrid Position-Force Control of Climbing Parallel Robot Using Electrohydraulic Servo Actuators". In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48349.
Abstract (sommario):
An Hybrid Position-Force control scheme for hydraulic actuators is proposed for a Climbing Parallel Robot (CPR) based on a Stewart-Gough mechanism. The hydraulics actuators are modeled, and expressed as state-space variables. The parameter identification is based on experimental data and the box-grey identification procedure, using a minimization prediction error criterion. A cascade control strategy with feedback linearization and state estimation based on two control loops is used for each hydraulic actuator. The control strategy proposed for the hydraulic actuator is implemented in a real prototype, considering a position tracking task. The model of the actuators are included in the dynamic model of the CPR obtained via the virtual work formulation, which considers the thirteen bodies that composes the Stewart-Gough robot. The proposed controller is simulated and implemented on the CPR to test the limits of its performance and the real effects of friction. The results obtained from simulation and experiments are presented and discussed.
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Defterli, Sinem Gozde, e Yunjun Xu. "Virtual Motion Camouflage Based Visual Servo Control of a Leaf Picking Mechanism". In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9042.
Abstract (sommario):
For a lately constructed disease detection field robot, the segregation of unhealthy leaves from strawberry plants is a major task. In field operations, the picking mechanism is actuated via three previously derived inverse kinematic algorithms and their performances are compared. Due to the high risk of rapid and unexpected deviation from the target position under field circumstances, some compensation is considered necessary. For this purpose, an image-based visual servoing method via the camera-in-hand configuration is activated when the end-effector is nearby to the target leaf subsequent to performing the inverse kinematics algorithms. In this study, a bio-inspired trajectory optimization method is proposed for visual servoing and the method is constructed based on a prey-predator relationship observed in nature (“motion camouflage”). In this biological phenomenon, the predator constructs its path in a certain subspace while catching the prey. The proposed algorithm is tested both in simulations and in hardware experiments.
Rapporti di organizzazioni sul tema "Servo task":
1
Fiala, John C. Manipulator servo level task decomposition. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nist.tn.1255.
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Longo, Francisco. Analytical Framework for Institutional Assessment of Civil Service Systems. Inter-American Development Bank, aprile 2002. http://dx.doi.org/10.18235/0012268.
Abstract (sommario):
The object of this document is to present an analytical framework that could serve as a common reference to assess national Civil Service (CS) systems in countries located within the Bank's scope of action. There are three goals of the document: 1) To facilitate the task of analysts of national CS systems, providing a reference point and methodological directions useful for their work; 2) To provide a common approach to diagnosis, facilitating comparative analysis of their conclusions; 3) To provide methodological measuring tools using indices, that can allow comparison of certain aspects of different countries' situations. This document was prepared in April of 2002 for an IDB Regional Policy Dialogue.
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Perren, Will. PPR2022 - Automated Vehicle Safety Assurance - In-use Safety and Security Monitoring - Task 7: Change Control. TRL, giugno 2022. http://dx.doi.org/10.58446/bpdl3309.
Abstract (sommario):
The proposed in-use safety and security monitoring scheme can serve as an essential feedback mechanism for continual improvement of how the AV safety assurance scheme manages safety. In-use monitoring data can support in identifying changes and assessing their impact. However, making a change without due consideration of the impacts to all stakeholders may lead to increased regulatory inefficiency, undue burden on manufacturers and operators and may ultimately lead to worse safety outcomes. This document outlines a change control process to manage and implement change throughout the entire AV safety assurance scheme to formally capture all learnings and provide feedback to identify, assess and implement positive change.
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Burks, Thomas F., Victor Alchanatis e Warren Dixon. Enhancement of Sensing Technologies for Selective Tree Fruit Identification and Targeting in Robotic Harvesting Systems. United States Department of Agriculture, ottobre 2009. http://dx.doi.org/10.32747/2009.7591739.bard.
Abstract (sommario):
The proposed project aims to enhance tree fruit identification and targeting for robotic harvesting through the selection of appropriate sensor technology, sensor fusion, and visual servo-control approaches. These technologies will be applicable for apple, orange and grapefruit harvest, although specific sensor wavelengths may vary. The primary challenges are fruit occlusion, light variability, peel color variation with maturity, range to target, and computational requirements of image processing algorithms. There are four major development tasks in original three-year proposed study. First, spectral characteristics in the VIS/NIR (0.4-1.0 micron) will be used in conjunction with thermal data to provide accurate and robust detection of fruit in the tree canopy. Hyper-spectral image pairs will be combined to provide automatic stereo matching for accurate 3D position. Secondly, VIS/NIR/FIR (0.4-15.0 micron) spectral sensor technology will be evaluated for potential in-field on-the-tree grading of surface defect, maturity and size for selective fruit harvest. Thirdly, new adaptive Lyapunov-basedHBVS (homography-based visual servo) methods to compensate for camera uncertainty, distortion effects, and provide range to target from a single camera will be developed, simulated, and implemented on a camera testbed to prove concept. HBVS methods coupled with imagespace navigation will be implemented to provide robust target tracking. And finally, harvesting test will be conducted on the developed technologies using the University of Florida harvesting manipulator test bed. During the course of the project it was determined that the second objective was overly ambitious for the project period and effort was directed toward the other objectives. The results reflect the synergistic efforts of the three principals. The USA team has focused on citrus based approaches while the Israeli counterpart has focused on apples. The USA team has improved visual servo control through the use of a statistical-based range estimate and homography. The results have been promising as long as the target is visible. In addition, the USA team has developed improved fruit detection algorithms that are robust under light variation and can localize fruit centers for partially occluded fruit. Additionally, algorithms have been developed to fuse thermal and visible spectrum image prior to segmentation in order to evaluate the potential improvements in fruit detection. Lastly, the USA team has developed a multispectral detection approach which demonstrated fruit detection levels above 90% of non-occluded fruit. The Israel team has focused on image registration and statistical based fruit detection with post-segmentation fusion. The results of all programs have shown significant progress with increased levels of fruit detection over prior art.
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Wakelin. L52127 Evaluation of Soil Resistivity Measurement Techniques. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), luglio 2004. http://dx.doi.org/10.55274/r0010437.
Abstract (sommario):
The measurement and interpretation of soil resistivity data is a fundamental aspect of pipeline corrosion engineering; nevertheless, very little information has been specifically published to assist pipeline corrosion personnel with these tasks. The purpose of this project was to evaluate the various techniques and instruments which are available for the measurement of soil resistivity, and also to consider the methods which are available to interpret the data. Although large amounts of information have already been published on this subject in other fields of engineering, much of this literature is not applicable to pipeline corrosion applications. A test method which might be considered a standard practice in one field of engineering may not be applicable to pipeline corrosion engineering at all, and so it was important that this evaluation be conducted by a pipeline corrosion engineer on behalf of all pipeline corrosion engineers. It was anticipated that this report might serve as a soil resistivity reference for the pipeline and corrosion industries, and possibly for electrical engineers in general, who are interested in the investigation of the earth's electrical characteristics.
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Agrawal, Asha Weinstein, Evelyn Blumenberg, Anastasia Loukaitou-Sideris e Brittney Lu. Understanding Workforce Diversity in the Transit Industry: Establishing a Baseline of Diversity Demographics. Mineta Transportation Institute, febbraio 2024. http://dx.doi.org/10.31979/mti.2024.2213.
Abstract (sommario):
This study provides baseline data on the status of the racial/ethnic and gender diversity of the transit agency workforce in the U.S. and identifies potential barriers and promising practices for diversifying this workforce. Public transit agencies function best when the diversity of their workforce represents the communities they serve, yet previous research finds an underrepresentation of women and minorities in senior and managerial roles, along with an overconcentration of men and workers of color—particularly Black workers—in operational roles (e.g., drivers, janitors). The study updates those earlier studies with newer data drawn from five discrete research tasks: 1) review of the scholarly and professional literature on the topic; 2) review of the websites of the 50 largest transit operators; 3) analysis of employee demographic data submitted by 152 transit operators as part of Equal Employment Opportunity (EEO) program plans; 4) analysis of responses to an original survey sent to the human resources personnel of transit agencies (92 responses from staff at 68 agencies), and 5) interviews with 12 professionals selected for their expertise in transportation workforce diversity monitoring, management, and/or advocacy.
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Chorna, Olha V., Vita A. Hamaniuk e Aleksandr D. Uchitel. Use of YouTube on lessons of practical course of German language as the first and second language at the pedagogical university. [б. в.], settembre 2019. http://dx.doi.org/10.31812/123456789/3253.
Abstract (sommario):
Integration of ICT significantly increases the possibilities of the educational process and extends the boundaries of the educational sphere as a whole. Publicly available resources, such as e-mail, blogs, forums, online applications, video hosting sites, can serve as the basis for building open learning and education. Informational educational technologies of learning foreign languages are in the focus of this study. The article represents the results of theoretical analysis of content on the subject of its personal- and didactic-definite orientation, as well as some aspects of the practical use of commonly used YouTube video materials in the process of teaching German as the first or second foreign language in higher education, namely at the pedagogical university. Taking into account the practical experience of using the materials of several relevant thematic YouTube channels with a fairly wide constant audience, a concise didactic analysis of their product is presented and recommendations on converting video content into methodological material in the framework of practical course of German language by future teachers are offered. Due to the suggested recommendations, the following tasks can be solved: enrichment of the vocabulary; semantization of phraseological units, constant figures of speech, cliché; development of pronunciation skills; expansion of linguistic competence; improving listening and speaking skills; increasing motivation to learn, etc.
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Light, Ethan, Shang Sai, Yanfeng Ouyang, Will O’Brien, Jesus Osorio e Yuhui Zhai. Investigating Statewide Transit Maintenance Needs in Illinois. Illinois Center for Transportation, dicembre 2023. http://dx.doi.org/10.36501/0197-9191/23-028.
Abstract (sommario):
This study’s researchers investigated transit vehicle maintenance processes, maintenance needs, and potential opportunities associated with building additional bus maintenance facilities (e.g., regional maintenance centers) in Illinois. They collected information via three main tasks. First, they conducted a literature review to document practices on preventive and corrective transit vehicle maintenance processes and explored similar or comparable projects among peer states and regions. Second, they conducted a series of interviews with Illinois local transit agencies, nonprofit organizations, Illinois administrators, and peer states to identify common challenges and opportunities with fleet maintenance as well as to capture stakeholders’ perspectives on state-sponsored maintenance service. Third, they conducted a preliminary data-driven model analysis to present a better understanding of Illinois’ needs for regional maintenance centers and to illustrate how the Illinois Department of Transportation may systematically plan regional maintenance center locations and capacities to best serve unmet demand under a range of available budget values. This study’s findings lay the foundation for more effective planning of a better network of regional maintenance centers to provide long-term benefits to IDOT and partner agencies by reducing vehicle down time, decreasing maintenance and towing costs, and allowing for greater tracking of maintenance techniques in coordination with similar agencies across Illinois.
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Ayers, Dotson e Alexander. L52332 Offshore Pipeline Damage Emergency Response Guidelines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), luglio 2012. http://dx.doi.org/10.55274/r0010016.
Abstract (sommario):
Subsea pipelines and flow lines are periodically subjected to damaging events such as anchor impacts that result in massive pipeline movements, dropped object damage, internal/external corrosion damage, etc. Knowing how to assess these damage events is often challenging, especially considering the potential for product release. The cost of production shut-ins can be significant and avoiding un-necessary shut-ins is desirable. While most pipeline operators have company-level procedures and programs in place for responding to pipeline emergencies, at the current time there is no single resource for providing guidance for the pipeline industry. Development of emergency response guidelines for operators to respond to offshore pipeline damage emergencies in an effective and timely manner. One unique feature of this project is that SES utilized a series of workshops spaced over a years to collectively build the Decision/Task Tree, which is the key feature of this work. Further, a collaborative effort was continued to develop detailed input for the report. This Collaborative Workshop Model of conducting project work combines the best minds available on the subject, rather than having our customers merely serve as observers and evaluators, as is done traditionally. A second unique feature is that this report is formatted as a computer-based entry portal a "front door"� to existing proprietary documents that each company has assembled for use in responding to an offshore pipeline damage incident. Often the treasured company documents are in dusty notebooks that should be scanned for incorporation with this front door document. This guideline document in its final form can provide live links to the proprietary company documents in an Adobe Acrobat format, along with the materials we have developed for the project. This front door is intended for use on a computer that is linked to the internet. The contents of this report are organized to place traditional introductory topics that would detract from operational use of this report for actual offshore emergencies in appendices near the back of the report. This report provides insights on the critical elements required for effectively responding to pipeline emergencies. PART A of this report contains the traditional introductory material, while PART B is named the Field Manual - for offshore emergency use. PART B can be used alone as an emergency response field manual without the introductory material PART A contains the Executive Summary, Introduction and Background, while PART B Contains the Preface to the Field Manual, How to Use This Report, the Detailed Task/Decision Matrix, the Resource Sheets referred to in the Matrix, In-House Company Processes Needed, Table of Preferred Consultants and Service Providers, and the SPIM 3-1 Detailed Repair Investigation Checklist.
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Reis, Evan, Yousef Bozorgnia, Henry Burton, Kelly Cobeen, Gregory Deierlein, Tara Hutchinson, Grace Kang et al. Project Technical Summary (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, dicembre 2020. http://dx.doi.org/10.55461/feis4651.
Abstract (sommario):
This report is one of a series of reports documenting the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research Center (PEER) and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER-CEA Project.” The overall objective of the PEER–CEA project is to provide scientifically based information (e.g., testing, analysis, and resulting loss models) that measure and assess the effectiveness of seismic retrofit to reduce the risk of damage and associated losses (repair costs) of wood-frame houses with cripple wall and sill anchorage deficiencies as well as retrofitted conditions that address those deficiencies. Tasks that support and inform the loss-modeling effort are: (1) collecting and summarizing existing information and results of previous research on the performance of wood-frame houses; (2) identifying construction features to characterize alternative variants of wood-frame houses; (3) characterizing earthquake hazard and ground motions at representative sites in California; (4) developing cyclic loading protocols and conducting laboratory tests of cripple wall panels, wood-frame wall subassemblies, and sill anchorages to measure and document their response (strength and stiffness) under cyclic loading; and (5) the computer modeling, simulations, and the development of loss models as informed by a workshop with claims adjustors. This report is a product of Working Group 7: Reporting and is a summary of the PEER–CEA Project work performed by Working Groups 1–6. This report does not present new information apart from the rest of the project, and its purpose is to serve as a reference for researchers and catastrophe modelers wishing to understand the objectives and key findings of the project. The key overall findings of the PEER–CEA Project are summarized in Chapters 8 and 10, which describe the efforts of the WG5 and WG6 Working Groups. The reader is referred to the individual reports prepared by the Working Groups for comprehensive information on the tasks, methodologies, and results of each.