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2022 International Symposium on Antennas and Propagation (ISAP)

作者： Abdulkadir Bello Shallah Farid Zubir Mohamad Kamal A. Rahim Ahmad Abubakar Zubaida Yusoff Murtala Aminu-Baba School of electrical engineering Universiti Teknologi Malaysia Johor Bahru Malaysia Electronics and robotics Khalifa University Abu Dhabi UAE Faculty of engineering Multimedia University Cyberjaya Selangor Malaysia Electronics and computer engineering Abubakar Tafawa Balewa University Bauchi Nigeria

ISBN: (数字)9781665479622

ISBN: (纸本)9781665479639

This paper proposes a miniaturized dual-band branch-line coupler with an increased frequency ratio for 5G applications. In this design, a T-shaped line replaced the conventional line in which both the lines and stubs were folded to obtain a 46.62% size reduction compared to the standard one. Moreover, the design demonstrates an increased frequency ratio of 5 centered at 0.7 GHz and 3.5 GHz. The structure is designed on an RT/Duroid 5880 substrate and simulated using a CST-MW studio.

关键词： 5G mobile communication Dual band Couplers Mathematical models Substrates Standards

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Summer School on Circular Economy for Sustainable Manufacturing: A Case Study and Lessons Learned 31

Summer School on Circular Economy for Sustainable Manufactur...

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31st CIRP Conference on Life Cycle engineering, LCE 2024

作者： Rejeb, Helmi Ben Muxika, Eñaut Ghadimi, Pezhman Univ. Grenoble Alpes CNRS Grenoble INP G-SCOP Grenoble France Mondragon University Electronics & Computer Science Department - Signal Theory & Communications Arrasate Spain Laboratory for Advanced Manufacturing Simulation and Robotics School of Mechanical & Materials Engineering University College Dublin Belfield Dublin Ireland

The Circular Economy Action Plan is the main building block of the European Green Deal, Europe's new agenda for sustainable growth. Businesses need new technologies, new methods and new industrial organization either to create new businesses or to transform their products, processes and business models. They also need new talents to innovate, create businesses and new jobs, and transform society into a more sustainable one. Circular economy has grown significantly in recent years as a topic taught in engineering curricula. The purpose of this paper is to present the design, implementation and evaluation of a summer school program dedicated to the development, transformation and implementation of circular economy systems and new business models in manufacturing. The program was designed in collaboration with three university partners during a European project and relied on contributions from industrial companies, including start-ups and innovative companies. At the end, some lessons are drawn in order to show the main added value based on the evaluation of this summer school and to identify recommendations for the design and implementation of similar summer schools. © 2024 The Author(s).

关键词： engineering education

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Learning of motor skills based on grossness and fineness of movements in daily-life tasks

Learning of motor skills based on grossness and fineness of ...

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IEEE International Conference on robotics and Automation (ICRA)

作者： Sang Hyoung Lee Nam Jun Cho Il Hong Suh Education Center for Network-based Intelligent Robotics Hanyang University Seoul Korea Department of Electronics and Computer Engineering Hanyang University Seoul Korea

In this paper, we propose a novel method for learning motor skills based on grossness and fineness of movements involved in daily-life tasks. Grossness and fineness depend on the degrees of complexity (i.e., linear combinations between basis vectors) and repeatability (i.e., repeat accuracies between multiple trials) of such movements. In such a daily-life task, a robot's movements are usually related to a task-relevant object. Therefore, the complexity and the repeatability should be acquired from datasets that include the spatial and temporal relationships between a robot and a task-relevant object. To measure the degree of complexity, correlations are first obtained from each data by canonical correlation analysis. To measure the degree of repeatability, variations are then obtained from covariances between datasets acquired by multiple trials. The grossness and fineness are finally acquired by combining the correlations and the variations. To learn a motor skill, a Gaussian Mixture Model (GMM) is estimated using well-known methods as Principal Component Analysis (PCA), k-means, Bayesian Information Criterion (BIC), and Expectation-Maximization (EM) algorithms. First, initial parameters of a GMM are estimated by weighting a conventional k-means algorithm with the grossness and fineness. Based on PCA, BIC, and EM algorithms, the GMM is then estimated using the initial parameters and a robot's motion trajectories. To validate our proposed methods, the GMM is evaluated in terms of reproduction and recognition using a robot arm that performs two daily-life tasks: cookie-decorating and constrained-delivering tasks.

关键词： Correlation Robots Indexes Clustering algorithms Trajectory Principal component analysis Complexity theory

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Bidirectional multi-tier cognitive swarm drone 5G network

Bidirectional multi-tier cognitive swarm drone 5G network

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2020 IEEE INFOCOM Conference on computer Communications Workshops, INFOCOM WKSHPS 2020

作者： Jacob, Sunil Menon, Varun G. Shynu, P.G. Fathima Shemim, K.S. Mahapatra, Bandana Joseph, Saira SCMS Center for Robotics SCMS School of Engineeeirng and Technology Ernakulam India SCMS School of Engineeeirng and Technology Department of Computer Science and Engineering Ernakulam India School of Information Technology and Engineering Vellore Institute of Technology Vellore India University of Bolton Department of Computing and IT Ras Al Khaimah United Arab Emirates Symbiosis Skills and Open University Department of Data Science Kiwale Pune India SCMS School of Engineeeirng and Technology Department of Electronics and Communication Engineering Ernakulam India

ISBN: (纸本)9781728186955

The use of unmanned aerial vehicle (UAV) as a dynamic node in point to point communication of 5G and beyond 5G cellular networks is an emerging technology. It provides a reliable and efficient mode of wireless communication network in the sky. Existing architectures include single tier and multi-tier drone architecture. Major challenges in multi-tier architecture is in establishing an air traffic control system and in efficient resource sharing between the drones. To overcome the challenges associated with the multitier drone and cellular drone networks, a bidirectional multitier cognitive swarm drone network (BMCSDN) is proposed and investigated in terms of spectrum efficiency and allocation of optimized altitude and power for down link transmission. The proposed method uses the cognitive swarm drone (CSD) concept and provides enhancement of capacity and coverage with optimized transmission efficiency. The work also analyses the effect of interference when all CSDs transmit and receive with static and dynamic frequency allocations. © 2020 IEEE.

关键词： 5G mobile communication systems

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Customized Touch UI Development for E-Cockpit in Automobile

Customized Touch UI Development for E-Cockpit in Automobile

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Smart Technologies, Communication and robotics (STCR)

作者： D Sivaraj P D Rathika D Jayasree Dwarkesh Department of Electronics and Communication Engineering PSG College of Technology Coimbatore India Department of Robotics and Automation Engineering PSG College of Technology Coimbatore India Department of Electronics and Communication Engineering PSG Polytechnic College Coimbatore India Department of Computer science and Engineering PSG College of Technology Coimbatore India

In recent times, the automotive industry has made significant steps towards digitization by focusing on electronic cockpits (E-Cockpits) to enhance the driving experience, comfort and safety. The incorporation of Touch-Based User Interface (UI) technologies has played a crucial role in revolutionizing Driver-Vehicle interaction [10]. The project of E-Cockpit represents a concept that consolidates various internal car systems onto one unified digital platform, enabling seamless control and access to essential infotainment, safety features, and connectivity services [14]. For the realization of the complete potential of an E-Cockpit, it is important to develop an innovative and User-Friendly touch UI as this directly influences both user experience and safety concerns.

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Flexible Force-sensitive Sealed Packet with Single Fluidic Chamber

Flexible Force-sensitive Sealed Packet with Single Fluidic C...

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International Conference on Micro/Nano Sensors for AI, Healthcare, and robotics (NSENS)

作者： Mark Lester F. Padilla Zhipeng Dong Fei Chen Department of Mechanical and Automation Engineering T-Stone Robotics Institute The Chinese University of Hong Kong Hong Kong Department of Electronics and Computer Engineering De La Salle University Manila Philippines

ISBN: (数字)9798350375213

ISBN: (纸本)9798350375220

Tactile sensor developments have been seen in the past years. The flexible and soft type of these sensors became popular due to their capability to ensure safe physical interactions with humans. This paper presents a flexible force-sensitive sealed packet that can detect normal force acting on its surface. Our sensor used poly(3,4 ethylenedioxythiophene):poly(styrene sulfonate) or PEDOT:PSS and liquid binder to form a conductive liquid mixture and put it inside the sealed packet of thin plastic. One notable difference between our proposed sensor and other PEDOT:PSS-based sensors is that ours is low-cost and easy to fabricate. For our data acquisition setup, we used a voltage divider circuit with a 68k ohm resistor connected to an analog pin of an Arduino Uno. We also used the DAYSENSOR’s DYZ-101 5-kg load cell to determine the amount of force applied, which served as our ground truth. The changes in resistance were compared against the force applied. Linear regression analysis was done to show the correlation between the two quantities, and its slope corresponds to the sensor’s sensitivity. We performed a repeatability analysis of the proposed sensor, although some challenges were observed since manual pressing was done. We also tested the change in sensitivity once a different material, such as cardboard, foam, and copper tape, is placed between the load cell and our proposed sensor. Our results showed that we can achieve higher sensitivity and better linearity using foam. For future works, we plan to extend this study to skin-like wearable devices and tactile sensing.

关键词： Resistors Resistance Sensitivity Liquids Force Tactile sensors Voltage

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Looking around with your brain in a virtual world

Looking around with your brain in a virtual world

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IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain

作者： Bos, Danny Plass-Oude Duvinage, Matthieu Oktay, Oytun Saa, Jaime Delgado Guruler, Huseyin Istanbullu, Ayhan Van Vliet, Marijn Van De Laar, Bram Poel, Mannes Roijendijk, Linsey Tonin, Luca Bahramisharif, Ali Reuderink, Boris HMI Group Faculty of EEMCS University of Twente Netherlands TCTS Lab Electrical Engineering University Mons Belgium Electronics and Communications Corlu Engineering Namik Kemal University Turkey Faculty of Engineering and Natural Sciences VPA Lab Sabanci University Turkey IEE Group of Robotics and Intelligent Systems Universidad del Norte Colombia Department of Electronics and Computer Education Faculty of Technical Education Mugla University Turkey Faculty of Computer Engineering Balikesir University Turkey Radboud University Nijmegen Donders Institute for Brain Cognition and Behaviour Nijmegen Netherlands CNBI École Polytechnique Fédérale de Lausanne Switzerland Radboud University Nijmegen Institute for Computing and Information Sciences Nijmegen Netherlands

ISBN: (纸本)9781424498918

Offline analysis pipelines have been developed and evaluated for the detection of covert attention from electroen-cephalography recordings, and the detection of overt attention in terms of eye movement based on electrooculographic measurements. Some additional analysis were done in order to prepare the pipelines for use in a real-time system. This real-time system and a game application in which these pipelines are to be used were implemented. The game is set in a virtual environment where player is a wildlife photographer on an uninhabited island. Overt attention is used to adjust the angle of the first person camera, when the player is tracking animals. When making a photograph, the animal will flee when it notices it is looked at directly, so covert attention is required to get a good shot. Future work will entail user tests with this system to evaluate usability, user experience, and characteristics of the signals related to overt and covert attention when used in such an immersive environment. © 2011 IEEE.

关键词： Virtual reality

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Incentivizing mobile edge caching and sharing: An evolutionary game approach

arXiv

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arXiv 2021年

作者： Li, Mingyu Jiang, Changkun Gao, Lin Wang, Tong Jiang, Yufei The School of Electronics and Information Engineering Harbin Institute of Technology Shenzhen China The Department of Computer Engineering Shenzhen University Shenzhen China The School of Electronics and Information Engineering Harbin Institute of Technology Shenzhen China The Shenzhen Institute of Artificial Intelligence and Robotics for Society Shenzhen China

Mobile Edge Caching is a promising technique to enhance the content delivery quality and reduce the backhaul link congestion, by storing popular contents at the network edge or mobile devices (e.g. base stations and smartphones) that are proximate to content requesters. In this work, we study a novel mobile edge caching framework, which enables mobile devices to cache and share popular contents with each other via device-to-device(D2D) links. We are interested in the following incentive problem of mobile device users: whether and which users are willing to cache and share what contents, taking the user mobility and cost/reward into consideration. The problem is challenging in a large-scale network with a large number of users. We introduce the evolutionary game theory, an effective tool for analyzing large-scale dynamic systems, to analyze the mobile users' content caching and sharing strategies. Specifically, we first derive the users' best caching and sharing strategies, and then analyze how these best strategies change dynamically over time, based on which we further characterize the system equilibrium systematically. Simulation results show that the proposed caching scheme outperforms the existing schemes in terms of the total transmission cost and the cellular load. In particular, in our simulation, the total transmission cost can be reduced by 42.5%∼55.2% and the cellular load can be reduced by 21.5%∼56.4%. © 2021, CC BY-SA.

关键词： Game theory

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Computationally effective stereovision SLAM

Computationally effective stereovision SLAM

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IEEE International Workshop on Imaging Systems and Techniques (IST)

作者： Lazaros Nalpantidis Georgios Ch. Sirakoulis Andrea Carbone Antonios Gasteratos Laboratory of Robotics and Automation Department of Production and Management Engineering Democritus University of Thrace Xanthi Greece Laboratory of Electronics Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece Autoagent Laboratory of Cognitive Robotics Department of Computer and Systems Science University of Roma La Sapienza Rome Italy

In this paper a visual Simultaneous Localization and Mapping (SLAM) algorithm suitable for indoor area measurement applications is proposed. The algorithm is focused on computational effectiveness. The only sensor used is a stereo camera placed onboard a moving robot. The algorithm processes the acquired images calculating the depth of the scenery, detecting occupied areas and progressively building a map of the environment. The stereo vision-based SLAM algorithm embodies a custom-tailored stereo correspondence algorithm, the robust scale and rotation invariant feature detection and matching Speeded Up Robust Features (SURF) method, a computationally effective v-disparity image calculation scheme, a novel map-merging module, as well as a sophisticated Cellular Automata (CA)-based enhancement stage. The proposed algorithm is suitable for autonomously mapping and measuring indoor areas using robots. The algorithm is presented and experimental results for self-captured image sets are provided and analyzed.

关键词： Simultaneous localization and mapping Area measurement Robustness computer vision Robot vision systems Cameras Robot sensing systems robotics and automation Image analysis Algorithm design and analysis

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Calculating Accurate Window Size for Shape-From-Focus

Calculating Accurate Window Size for Shape-From-Focus

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International Conference on Information Science and Applications (ICISA)

作者： Mannan Saeed Muhammad Husna Mutahira Kun-Woo Choi Whoi-Yul Kim Yasar Ayaz Department of Electronics and Computer Engineering Hanyang University Seoul Korea Department of Robotics and Artificial Intelligence National University of Sciences and Technology (NUST) Islamabad Pakistan

Shape from focus (SFF), represents a passive technique in recovering object shapes from scenes. In SFF systems, a single imaging device is used to acquire images followed by the application of Focus Measure (FM) at every point to obtain focus quality, to obtain depth by maximizing the focus curves. Although numerous focus measures have been recently proposed, less attention has been paid to the factors affecting them. In regard to FM, one such critical factor impacting SFF system applications is window size selection. In the paper in question, window size criteria for SFF systems have been formulated. The effect of change of imaging device parameters (such as image resolution, focal length of lens etc.) has also been analyzed. Experiments are performed on simulated and real objects to validate the proposed scheme.

关键词： Shape Microscopy Lenses Optical imaging Approximation methods Correlation Three-dimensional displays

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