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Literatura académica sobre el tema "Virtual Coaching System (VCS)"
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Artículos de revistas sobre el tema "Virtual Coaching System (VCS)"
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Kotane, Inta. "CONCEPT OF VIRTUAL CURRENCIES IN MODERN ECONOMIES." Latgale National Economy Research 1, no. 10 (2018): 63. http://dx.doi.org/10.17770/lner2018vol1.10.3605.
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In recent years, development of blockchain technology and virtual currencies (VCs) have been followed not just by the media and industry professionals all over the world – there rarely could be found a person who has not ever heard the term ‘bitcoin’. Despite the popularity of VCs, there is a lack of comprehensible information in the Latvian language about what the virtual currency (VC) is, as well the concepts of digital and VCs are often misused as synonyms. The research is based on the analysis of special literature and scientific publications on the system of VCs. The aim of the research: to explore the concept of VCs in the modern economy. General scientific research methods are used in the research: the method of monographic or descriptive research, the comparative analysis method for studying the concept of VCs, the classification, legal regulation, and future development possibilities. The results of the research show that VCs are a type of digital currency, though, the opposite statement is not correct. Thus, all VCs are digital, but not all digital currencies are virtual. Exploration of the legal framework of VCs suggests that it is at an early stage of development. With the increasing number of VCs and along with strengthening of the legal framework of VCs, the issue of possible directions of the future development of VCs is raised. Two points of view dominate: the future currency or payment system, for example, smart contracts.
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Sitzenfrei, R., M. Möderl, and W. Rauch. "Graph-based approach for generating virtual water distribution systems in the software VIBe." Water Supply 10, no. 6 (2010): 923–32. http://dx.doi.org/10.2166/ws.2010.579.
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Application of virtual case studies (VCS) is a well established technique in environmental engineering to test measures, approaches, models or software. However, preparation of VCS for an infrastructure network is a tedious task. In literature, approaches can be found which generate very simplified VCS, which are only partly comparable with real world case studies. VCS which are more comparable with real world case studies can be generated with the software VIBe (Virtual Infrastructure Benchmarking). With VIBe, a methodology for algorithmic generation of VCS with varying spatially distributed boundary conditions was presented. Therein the investigated infrastructure is constructed accordingly to the state-of-the-art design rules meeting the requirements of the generated virtual urban environment. In this paper the module for the generation of water distribution systems (WDS) is presented. The generated WDS are set in context with data from real world WDS and systematically investigated. A set of 75,000 virtual WDS with varying properties is characterized and stochastically analysed in order to identify system coherences e.g. impact of mesh degree on hydraulic, water quality performance and costs. An example involving the systematic investigation of a simple pipe sizing algorithm with the set of 75,000 WDS is shown.
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Lete, Nerea, Andoni Beristain, and Alejandro García-Alonso. "Survey on virtual coaching for older adults." Health Informatics Journal 26, no. 4 (2020): 3231–49. http://dx.doi.org/10.1177/1460458220926894.
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Virtual coaching has emerged as a promising solution to extend independent living for older adults. A virtual coach system is an always-attentive personalized system that continuously monitors user’s activity and surroundings and delivers interventions – that is, intentional messages – in the appropriate moment. This article presents a survey of different approaches in virtual coaching for older adults, from the less technically supported tools to the latest developments and future avenues for research. It focuses on the technical aspects, especially on software architectures, user interaction and coaching personalization. Nevertheless, some aspects from the fields of personality/social psychology are also presented in the context of coaching strategies. Coaching is considered holistically, including matters such as physical and cognitive training, nutrition, social interaction and mood.
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Jamali H., Ehsan, Masafumi Katou, Kenji Tara, Eiichi Asakawa, and Hitoshi Mikada. "Mirror reverse time migration using vertical cable seismic data for methane hydrate exploration." GEOPHYSICS 84, no. 6 (2019): B447—B460. http://dx.doi.org/10.1190/geo2018-0422.1.
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Gas hydrates are located in the permafrost and in deepwater shallow sediments, where low temperature and high pressure satisfy the stability conditions of methane clathrates to remain as solid compounds. Hydrates are found in a form of fine-layered or altered-layered structure with hiatuses and necessitate high-resolution surveys, which may not be achieved by conventional marine acquisition using towed streamers. We have developed a recent case study in which the vertical cable seismic (VCS) method has been used for high-resolution subseafloor imaging using a set of buoyed vertical-arrayed receivers that are anchored to the seafloor. The observation close to the target in the deepwater environment provides a higher signal-to-noise ratio and higher resolution. The primary reflections, however, could not achieve reliable depth images in the data processing due to their limited subsurface coverage. We used a reverse time migration (RTM) implementation of mirror imaging to extend the spatial subsurface coverage by using receiver ghost reflections. Because conventional velocity analysis methods are not applicable to the VCS survey due to the asymmetrical reflection path between the source and receiver, we implemented seismic interferometry and generated virtual surface seismic data from VCS data for velocity analysis. To preserve the resolution, amplitudes, and phase characteristics, we applied mirror RTM on the ghost reflections in the original VCS data rather than imaging the virtual data. The introduced case study using a VCS survey for identifying the methane hydrate system of the Umitaka Spur in the Sea of Japan led to high-resolution images, which suggest that a large gas chimney exists beneath a pockmark and is responsible for transferring methane gas from a deep hydrocarbon source to the shallow sediments. A bottom-simulating reflector as the base of the gas hydrate stability zone was also imaged.
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Belkhouche, F., and B. Bendjilali. "Dynamic collision risk modeling under uncertainty." Robotica 31, no. 4 (2012): 525–37. http://dx.doi.org/10.1017/s0263574712000550.
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SUMMARYThis paper introduces a probabilistic model for collision risk assessment between moving vehicles. The uncertainties in the states and the geometric variables obtained from the sensory system are characterized by probability density functions. Given the states and their uncertainties, the goal is to determine the probability of collision in a dynamic environment. Two approaches are discussed: (1) The virtual configuration space (VCS), and (2) the rates of change of the visibility angles. The VCS is a transformation of observer that reduces collision detection with a moving object to collision detection with a stationary object. This approach allows to create simple geometric collision cones. Error propagation models are used to solve the problem when going from the VCS to the configuration space. The second approach derives the collision conditions in terms of the rate of change of the limit visibility angles. The probability of collision is then calculated. A comparison between the two methods is carried out. Results are illustrated using simulation, including Monte Carlo simulation.
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Adamczyk, Michal, and Teresa Orlowska-Kowalska. "Virtual Current Sensor in the Fault-Tolerant Field-Oriented Control Structure of an Induction Motor Drive." Sensors 19, no. 22 (2019): 4979. http://dx.doi.org/10.3390/s19224979.
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Designing electrical drives resistant to the failures of chosen sensors has recently become increasingly popular due to the possibility of their use in fault-tolerant control (FTC) systems including drives for electric vehicles. In this article, a virtual current sensor (VCS) based on an algorithmic method for the reconstruction of the induction motor (IM) phase currents after current sensor faults was proposed. This stator current estimator is based only on the measurements of the DC-bus voltage in the intermediate circuit of the voltage-source inverter (VSI) and a rotor speed. This proposal is dedicated to fault-tolerant vector controlled IM drives, where it is necessary to switch to scalar control as a result of damage to the current sensors. The proposed VCS allows further uninterrupted operation of the direct rotor-field oriented control (DRFOC) of the induction motor drive. The stator current estimator has been presented in the form of equations, enabling its practical implementation in a microprocessor system. Simulation studies of the proposed algorithm in an open and closed-loop DRFOC structure are presented under different operation conditions of the drive system. The experimental verification of the proposed method is also presented and the accuracy of the stator current estimation algorithm is analyzed under various operating conditions of the drive system.
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Little, Bob. "Virtual value soars for sales-related skills." Industrial and Commercial Training 46, no. 5 (2014): 265–69. http://dx.doi.org/10.1108/ict-02-2014-0009.
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Purpose – The purpose of this paper is to outline an unusual – and online-based – approach to sales and negotiation training and coaching. Design/methodology/approach – Interviews with organisations involved, augmented with case studies. Findings – The “Learn, Implement, Support” method of developing sales and negotiating skills is effective. It combats, cost effectively, the criticism that 30 per cent of all learning is forgotten within 30 days of receiving training unless it is reinforced in a practical way. Practical implications – Organisations of all sizes – not just global multinationals – can now increase productivity and profitability from the online delivery of relevant learning materials, followed immediately by virtual coaching and support for a period of at least 12 months. Social implications – People can learn how to sell products and services more effectively and efficiently, via online-delivered learning and coaching, which contains a high degree of video. Originality/value – Organisations of all sizes – not just global multinationals – can now experience and benefit from the knowledge, skills and experience of a master-performer in the fields of sales and negotiation, thanks to the advent of a system of online learning delivery followed by virtual coaching.
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Yang, Guide, Yuanping Zhou, and Wenlong Xia. "Performance Optimization for Overloaded MIMO Systems with Virtual Channel Approach." Wireless Communications and Mobile Computing 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/9651378.
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In this letter, we propose a virtual channel (VC) optimization approach with a closed-loop and adaptive scheme for overloaded MIMO systems. With this approach, each input data stream goes through a VC which is generated at the transmitter; then it is transmitted to a receiver through the actual wireless channels. The VCs are concatenated with the actual wireless channels. Through VC optimization, the values of which can be adjusted to reduce the channel correlation, leading to a much improved system performance. Compared to the conventional overloaded MIMO systems, the overloaded MIMO systems with this approach can achieve significantly better performances in terms of the system capacity and symbol error rate (SER). The method that uses genetic algorithm (GA) for finding the optimal VC vector is described. Simulation results illustrate the effectiveness of the proposed approach.
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Chuang, Huan-Ming, Chien-Ku Lin, Da-Ren Chen, and You-Shyang Chen. "Evolving MCDM Applications Using Hybrid Expert-Based ISM and DEMATEL Models: An Example of Sustainable Ecotourism." Scientific World Journal 2013 (2013): 1–18. http://dx.doi.org/10.1155/2013/751728.
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Ecological degradation is an escalating global threat. Increasingly, people are expressing awareness and priority for concerns about environmental problems surrounding them. Environmental protection issues are highlighted. An appropriate information technology tool, the growing popular social network system (virtual community, VC), facilitates public education and engagement with applications for existent problems effectively. Particularly, the exploration of related involvement behavior of VC member engagement is an interesting topic. Nevertheless, member engagement processes comprise interrelated sub-processes that reflect an interactive experience within VCs as well as the value co-creation model. To address the top-focused ecotourism VCs, this study presents an application of a hybrid expert-based ISM model and DEMATEL model based on multi-criteria decision making tools to investigate the complex multidimensional and dynamic nature of member engagement. Our research findings provide insightful managerial implications and suggest that the viral marketing of ecotourism protection is concerned with practitioners and academicians alike.
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Vázquez, Alain, Asier López Zorrilla, Javier Mikel Olaso, and María Inés Torres. "Dialogue Management and Language Generation for a Robust Conversational Virtual Coach: Validation and User Study." Sensors 23, no. 3 (2023): 1423. http://dx.doi.org/10.3390/s23031423.
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Designing human–machine interactive systems requires cooperation between different disciplines is required. In this work, we present a Dialogue Manager and a Language Generator that are the core modules of a Voice-based Spoken Dialogue System (SDS) capable of carrying out challenging, long and complex coaching conversations. We also develop an efficient integration procedure of the whole system that will act as an intelligent and robust Virtual Coach. The coaching task significantly differs from the classical applications of SDSs, resulting in a much higher degree of complexity and difficulty. The Virtual Coach has been successfully tested and validated in a user study with independent elderly, in three different countries with three different languages and cultures: Spain, France and Norway.