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UPB Scientific Bulletin, Series C: Electrical engineering and Computer Science 2017年第2期79卷 83-92页

作者： Denisleam, Sibel Dascalu, Mihai Trausan-Matu, Stefan Department of Computer Science University POLITEHNICA of Bucharest Romania Faculty of Automatic Control and Computers University POLITEHNICA of Bucharest Romania Research Institute for Artificial Intelligence of the Romanian Academy Academy of Romanian Scientists Romania

As Computer Supported Collaborative Learning (CSCL) gains a broader usage as a viable alternative to traditional educational scenarios, the need for automated tools capable of evaluating active participation and collaboration among peers in online discussions increases. In this study, we validate a quantitative model of predicting involvement in CSCL chats based on student's pauses throughout the timeline of the conversation. Starting from a corpus of 10 chat conversations, our proposed model explains 55% of the variance in terms of student participation and 42% in terms of collaboration, although relying on simple quantitative indices.

关键词： Students

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USMED and Surgery Assist: IMAGO MOL Cluster Biomedical Solutions to Improve Patient Imaging Availability and Noninvasive Diagnosis

USMED and Surgery Assist: IMAGO MOL Cluster Biomedical Solut...

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E-Health and Bioengineering Conference (EHB)

作者： Vlad Ghizdovat Lucian Nita Paul Herghelegiu Simona Caraiman Alina Capitanu Carmeni Mihai Cati Stolniceanu Jalloul Wael Delia Ciobanu Lidia Ionescu Irena-Cristina Grierosu Cipriana Stefanescu Biophysics Dept. “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania SC ROMSOFT SRL Iasi Romania Faculty of Automatic Control and Computer Engineering “Gheorghe Asachi” Technical University of Iasi Iasi Romania North East RDA Piatra Neamt Romania Imago-Mol Cluster Iaşi Romania “Sf. Spiridon” Emergency County Hospital Nuclear Medicine Laboratory Iasi Romania Department of Pathology “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania 3rd Surgery Department “Sf. Spiridon” Emergency County Hospital Iasi Romania Imago Mol Cluster “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania

For patient well-being and also for cost efficiency, constantly improving the medical act is essential. All patients undergo a set of medical tests before going into surgery. In some cases, these tests have to be repeated in different hospitals due to the lack of a system that facilitates presenting and sharing patient's data. We present two e-Health solutions for hospitals and clinics in the medical data field. Our aim was to design and implement a unique system for medical data management. This system allows easy data transfer between medical facilities. It also improves the medical diagnostic and treatment process and it increases the quality of medical care. Also, it improves the communication between patients and physicians, decreases the duration and costs of hospitalization and improves the patient's quality of life. The second medical solution presented in this paper present the results of the medical tests directly to a screen in the operating room, further reducing the time a patient has to wait before going into surgery and also improving the medical act. Both medical solutions were tested in real-world scenarios with promising results.

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Cloud live streaming system based on auto-adaptive overlay for Cyber Physical Infrastructure 3

Cloud live streaming system based on auto-adaptive overlay f...

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3rd Internatioal Workshop on Adaptive Resource Management and Scheduling for Cloud Computing, ARMS-CC 2016

作者： Mocanu, Bogdan Mureean, Vlad Mocanu, Mariana Cristea, Valentin University Politehnica of Bucharest Faculty of Automatic Control and Computers Computer Science Department 313 Splaiul Independentei Bucharest Romania

ISBN: (纸本)9781450342278

According to Mark Zuckerberg's speech, at the Samsung S7 launch in February 2016, the age of massive data streaming, especially massive video streaming, is here. At the beginning of the year 2000, most people used to share and search almost only text. Then, they started to be interested in sharing and searching images and, in the latter years, videos with different formats and resolutions. One of the emerging technologies of this decade is Virtual Reality (VR) through which people can share resources in a more exciting and enjoyable manner. If a decade ago people used to only read about how to do things, now they see it being done in videos. Expectations are that, in the not so distant future, they will be able to visualize and experience it through the power of VR. But, new technologies come with new challenges. Video streaming, especially for VR, generates a great amount of data. Techniques used until now need to evolve or lead the way for better ones. Centralized approaches for big data live streaming are no longer appropriate. Peer-to-Peer networks are more suitable due to their decentralized nature and auto-adaptive property. The aim of this paper is to analyze and evaluate the performances of the SPIDER Peer-to-Peer Overlay in the context of live video streaming for two Cloud use cases. The first scenario entitled CyberWater aims to create an e-platform for sustainable water resources with a high focus on pollution phenomena. The second scenario, called ClueFarm, is a Cloud service-based system for quality business development in the farming sector. The experimental results presented in this paper focus on the amount of bandwidth needed in booth test scenarios and emphasize the advantages of the SPIDER Peer-to-Peer Overlay. © 2016 ACM.

关键词： Virtual reality

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Model fitting and simulation of the respiratory control system under incremental exercise and altitude in healthy subjects 7th

Model fitting and simulation of the respiratory control syst...

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7th Latin American Congress on Biomedical engineering, CLAIB 2016

作者： Sarmiento, C.A. Hernández, A.M. Serna, L.Y. Bioinstrumentation and Clinical Engineering Research Group - GIBIC Bioengineering Department Engineering Faculty Universidad de Antioquia UdeA Calle 70 No. 52-21 Medellín Colombia Department of Automatic Control ESAII Biomedical Engineering Research Center CREB Technical University of Catalonia Barcelona Spain Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine CIBER-BBN Barcelona Spain

ISBN: (纸本)9789811040856

The modeling and simulation of the respiratory control system allows a better understanding of the physiological system to different stimuli and pathologies. Although different models have been validated under different situations, it is unusual to perform a fitting of their parameters based on environmental characteristics such as altitude, which can significantly affect the accuracy of the simulation results. The purpose of this work is to fit the respiratory control model proposed by Fincham and Tehrani with experimental data obtained under exercise. The experimental test include carbon dioxide production between 0.4 and 2.5 l / min at an altitude of 1538 m above sea level. The variables compared between simulation without fitting and with fitting regarding experimental data were total minute ventilation, arterial partial pressure of oxygen, arterial partial pressure of carbon dioxide and Frequency of breathing. The results evidence the altitude as a stimulus that should be considered in simulations of respiratory models in order to obtain more accurate results. © Springer Nature Singapore Pte Ltd. 2017.

关键词： Carbon dioxide

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Non-parametric modeling of double-link flexible robot manipulator based on NNARX model structure 19th

Non-parametric modeling of double-link flexible robot manipu...

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19th International Conference on Climbing and Walking Robots and the Support Technologies for Mobile Machines, CLAWAR 2016

作者： Jamali, Annisa Mat Darus, Intan Zaurah Abdulhussain, Ali Tokhi, M.O. Automation and Control Laboratory Faculty of Mechanical Engineering Universiti Teknologi Malaysia SkudaiJohor81300 Malaysia Department of Automatic Control and System Engineering University of Sheffield United Kingdom

ISBN: (纸本)9789813149120

The double-link flexible robot manipulator (DLFR) is a highly non-linear system. The development of existing linear models involves a lot of assumptions and approximations in order to reduce the complex calculation. Due to that, this paper presents a non-linear Auto Regressive model with eXogenous inputs (NARX) for DLFR and neural network is used to predict the non-linear segment. Thus, NNARX structure is used to develop four separate model of double link flexible manipulator from torque input to hub angle and from torque input to end point accelerations of each link. The performance of NNARX models are validated via One Step Ahead, Mean Squared Error and correlation tests. © 2016, World Scientific Publishing Co. Pte Ltd. All rights reserved.

关键词： Flexible manipulators

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Influence of grinding media movement on the throughput of dry grinding circuit with electromagnetic mill

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IOP Conference Series: Materials Science and engineering 2019年第1期641卷

作者： D Foszcz M Wołosiewicz-Głąb O Krauze S Ogonowski T Gawenda AGH University of Science and Technology Faculty of Mining and Geoengineering Department of Environmental Engineering and Mineral Processing Mickiewicza 30 Av. 30-059 Krakow Poland The Mineral and Energy Economy Research Institute of the Polish Academy of Sciences Krakow Poland Institute of Automatic Control Silesian University of Technology Akademicka 16 44-100 Gliwice Poland

The paper investigates how the movement of grinding media affects the throughput of dry grinding circuit with the innovative electromagnetic mill. General structure of the grinding circuit, control system and its advantages are presented. Three air flows are critical for determining material throughput and providing proper operating conditions of the installation: flow through the working chamber of the mill, through the main classifier and in the recycle stream. They are affected by the moving grinding media. To assess this influence, air speed measurements were taken for different positions of dampers in air streams, for several masses of grinding media and frequencies of the rotating electromagnetic field. For each air stream, a set of polynomial models was identified. control scheme for the air flows was proposed, including compensation for grinding media movement. Introduction of hierarchical control and distribution of particular control tasks on different layers was necessary.

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Patient monitoring system based on e-health sensors & web services 8

Patient monitoring system based on e-health sensors & web se...

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8th International Conference on Electronics, computers and Artificial Intelligence, ECAI 2016

作者： Hameed, Rasha Talal Mohamad, Omar Abdulwahabe Hamid, Omar Talal Ţǎpuş, Nicolae Faculty of Automatic Control and Computers University POLITEHNICA of Bucharest Bucharest Romania Department of Computer Science Cihan University Erbil Iraq

ISBN: (纸本)9781509020461

A lot of research has been carried out in the field of healthcare monitoring. In recent years, development of patient monitoring system has been emerged as an area of research. In this article, a patient monitoring system is proposed. The proposed framework integrated web services with multiple sensors controlled by Arduino Uno. Therefore, the Service Oriented Architecture (SOA) with Rich Internet Application (RIA) was used in this system. In particular, this system was applied on the four types of sensors necessary to monitor the patient such as electrocardiogram (ECG), body temperature, pulse rate and oxygen in blood (SPO2). Finally, the system outputs improves a high quality services, real time data collecting, eliminating manual data gathering and enabling the monitoring of huge numbers of patients. © 2016 IEEE.

关键词： Web services

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Structure Design of Hierarchical Adaptive Modular Neural Network

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Jisuanji Xuebao/Chinese Journal of computers 2017年第12期40卷 2827-2838页

作者： Zhang, Zhao-Zhao Qiao, Jun-Fei Yu, Wen Institute of Electronic and Information Engineering Liaoning Technical University HuludaoLiaoning125105 China Faculty of Information Technology Beijing University of Technology Beijing100124 China Department of de Control Automatic CINVESTAV-IPN Mexico City07360 Mexico

Modular neural network is an effective method to solve the complex problems that the monolithic fully coupled feedforward neural networks are difficult to learn. The most difficult problem of the modular neural network design method now facing is how to determine the number of function modules and the structure of the sub-modules in each function module under the condition of lack of the learned objects back ground knowledge. In this paper, we presents a hierarchical adaptive modular neural network structure design method based on the facts that the brain-like information process uses the mechanism of unsupervised learning, semi-supervised learning and supervised learning, and the brain networks demonstrate the property of hierarchical modularity, within each module there will be a set of function modules, and within each function there will be a set of sub-modules, and the brain-like information learning processing is purposeful to select several sub-modules from different function module to collaboratively learning. In essence, firstly, an unsupervised clustering algorithm named fast finding of density peaks cluster algorithm is adopted to identify the cluster centers based on all training samples, then the number of the function module and the training set of each function module can be determined. Secondly, a semi-supervised clustering algorithm named conditional fuzzy clustering algorithm is used to divide the training set of each function module into several groups to determine the number of sub-modules in each function module. For each sub-module, an incremental design of RBF network algorithm based on training error peak is applied to construct the structure of sub-module, this algorithm can adaptively build the structure of the sub-modules based on the training samples that allocated to the sub-modules. In sub-modules integration, a sub-module integrative approach based on relative distance measure is applied which can select different sub-modules from diff

关键词： Radial basis function networks

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Discrete PID algorithm with non-uniform sampling – Practical implementation in control system

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AIP Conference Proceedings 2018年第1期2029卷

作者： Miroslaw Kondratiuk Leszek Ambroziak Ewa Pawluszewicz Justyna Janczak Bialystok University of Technology Faculty of Mechanical Engineering Department of Automatic Control and Robotics Wiejska St. 45C 15-351 Bialystok Poland

In the paper the practical implementation of a discrete PID algorithm (DPID) with non-uniform sampling is presented. Studies starts with the discretized well known continuous PID equation with trapezoidal integration method. As a result, difference equation associated with the respect continuous-time model is obtained. Then, MATLAB/Simulink block model is developed in such way that a change sampling time during simulation is enabled. Algorithm is tested numerically in modeled DC motor speed control system. In order to compare results with conventional fixed-step controller, functions of control quality and number of samples are used. In the next step, developed DPID with non-uniform sampling is implemented to microprocessor of Arduino board and put into a series of experimental tests. Obtained results are compared to simulation. In the last part of the paper advantages and disadvantages of the proposed system are described, conclusions are drawn and directions of future work are pointed out.

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Cooperation of two heterogeneous mobile robots

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AIP Conference Proceedings 2018年第1期2029卷

作者： Arkadiusz Nikonowicz Leszek Ambroziak Mirosław Kondratiuk Arkadiusz Bożko Maciej Sulewski Bialystok University of Technology Faculty of Mechanical Engineering Automatic Control and Robotics Department Wiejska St. 45C 15-351 Bialystok Poland

The paper presents cooperation of two heterogeneous mobile robots which are two-wheeled robot and an unmanned aerial vehicle. Those platforms are fully autonomous and are equipped with indoor positioning system to acquire position of each. This paper introduces simple algorithms of path planning in static environment which is known for rover robots and path handling for both platforms. Accurate environment map is given a priori. The main aim of this work are the simulation tests of the simple cooperation algorithm. Tests were conducted in Simulink and its results are presented in both mobile platforms trajectories and path errors in x and y directions. The presented results show the effectiveness of proposed method.

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