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Learning and Teaching in computing and Engineering (LaTiCE)

作者： Geetha Narayanan Anjali Deshpande Anagha Narayanan Biomedical Engineering Vidyalankar Institute of Technology Mumbai India Electronics Engineering Vidyalankar Institute of Technology Mumbai India K.J. Somaiya College of Engineering Electronics Engineering Mumbai India

Experimentation plays a great role in understanding the concepts in engineering subjects like Electrical Machines. All the experiments on Electrical machines are requiring high voltage supply to be handled by students which always requires supervision by an expert. As electrical drives are essential parts of all real life applications basic knowledge and thorough understanding of the working of machines becomes important. For practicing experiments like load test on DC Motor, Induction motor, No Load/ Blocked rotor test on Induction motor students must visit the laboratory which may not be possible and safe all the times. To overcome this assignment experiments can be given on Virtual Machines laboratory in which they can access the lab from home and perform experiments without the fear of high voltages and try them on real machines in the lab under supervision. As the experiments cannot be performed unless all connections are correctly done, students understand the connections correctly. However experiments could be modified with further research for wrong connections or faults on Virtual Machines laboratory and see their effects, without causing any damage. It also helps to visualize and understand various concepts like Double field revolving theory, Rotating magnetic field through simulations.

关键词： Induction motors Education Rotors Magnetic fields Torque Virtual machining visualization

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Temporal alignment of asynchronously sampled biomedical signals

Temporal alignment of asynchronously sampled biomedical sign...

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Computers in Cardiology (CinC)

作者： Samuel E. Schmidt Kasper Emerek Ask S. Jensen Claus Graff Jacob Melgaard Peter S⊘gaard Kasper S⊘rensen Johannes J Struijk Department of Health Science and Technology Aalborg University Aalborg Ø Denmark Department of Cardiology Aalborg University Hospital Aalborg Denmark Department of Health Science and Technology Aalborg University Aalborg Denmark

ISBN: (纸本)9781509008964

Temporal alignment of signals obtained using different acquisition systems is often complicated by asynchronous sampling. In the current study we aligned 3-lead ECGs recorded in a phonocardiogram setup with 12-lead Holter ECGs. Two signals with common morphology (lead II from both devices, recorded synchronously with closely placed electrodes) were resampled to similar sample rates. An initial alignment was obtained by cross-correlation analysis. Next, instantaneous delays were estimated using cross-correlation analysis of the two signals in a running window of four seconds duration. The first derivative of the instantaneous delays is related to the variation in sample rate between signals. Consequently, a smoothed version of this derivative was used for local resampling of one of the signals before final alignment. Visual inspection confirmed that all recordings were synchronized by the alignment procedure. The mean and standard deviation of the delay between R-peaks in the synchronized ECGs were 0.3±4.5 ms. We present a fully automated method for alignment of signals sampled asynchronously with drifting clocks.

关键词： Delays Electrocardiography Correlation Synchronization Lead Morphology visualization

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Virtual Repository of Microscopic and Neuro-endoscopic Instrumentation in Neurosurgery

Virtual Repository of Microscopic and Neuro-endoscopic Instr...

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International conference on computing for Sustainable Global Development

作者： Ramandeep Singh Ashish Suri Britty Baby Sneh Anand Centre for Biomedical Engineering Indian Institute of Technology Delhi Department of Neurosurgery All India Institute of Medical Sciences Amarnath Shashi Khosla School of IT Indian Institute of Technology Delhi

ISBN: (纸本)9781467394178

Neurosurgical procedures are performed by microscopic and neuro-endoscopic approaches. Microscopy involves stereoscopic operating microscope and neuro-endoscopy includes rigid or flexible endoscopes for visualization. A set of functionally similar but morphologically different microscopic and neuro-endoscopic instruments are used in neurosurgery. There has been a significant advancement in the optics, but the instruments have many limitations. They have deprived ergonomics, single function and limited degrees of freedom. Hence, there is a need for the development of improved instruments. Training in neurosurgery for these procedures involves physical/synthetic and virtual simulators. Virtual training modules are being developed for the training of surgical procedures and validation of surgical skills. For both these requirements, the virtual model of related neurosurgical instruments is the primary requirement. In the present work, we have developed a virtual repository of microscopic and neuro-endoscopic instruments of neurosurgery. The surface data of these instruments was acquired using blue light scanning technique and processed using computer aided designing to create solid models. These virtual models can be used for surgeon specific modification in the existing designs and for creating new designs. They can be directly fabricated using rapid prototyping methods for developing low-cost training apparatus and for the development of virtual reality trainers, video based neuro-navigation, and e-learning platforms.

关键词： Blue light scanning Neurosurgical Instruments Microscopy Endoscopy Virtual repository Motion simulation

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Gaze-based teleprosthetic enables intuitive continuous control of complex robot arm use: Writing & drawing

Gaze-based teleprosthetic enables intuitive continuous contr...

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IEEE/RAS-EMBS International conference on biomedical Robotics and Biomechatronics (BioRob)

作者： Sabine Dziemian William W. Abbott A. Aldo Faisal Dept. of Computing Brain & Behaviour Lab London UK Dept. of Bioengineering Brain & Behaviour Lab London UK Hammersmith Hospital MRC Clinical Sciences Centre London UK

ISBN: (纸本)9781509032884

Eye tracking is a powerful mean for assistive technologies for people with movement disorders, paralysis and amputees. We present a highly intuitive eye tracking-controlled robot arm operating in 3-dimensional space based on the user's gaze target point that enables tele-writing and drawing. The usability and intuitive usage was assessed by a “tele” writing experiment with 8 subjects that learned to operate the system within minutes of first time use. These subjects were naive to the system and the task and had to write three letters on a white board with a white board pen attached to the robot arm's endpoint. The instructions are to imagine they were writing text with the pen and look where the pen would be going, they had to write the letters as fast and as accurate as possible, given a letter size template. Subjects were able to perform the task with facility and accuracy, and movements of the arm did not interfere with subjects ability to control their visual attention so as to enable smooth writing. On the basis of five consecutive trials there was a significant decrease in the total time used and the total number of commands sent to move the robot arm from the first to the second trial but no further improvement thereafter, suggesting that within writing 6 letters subjects had mastered the ability to control the system. Our work demonstrates that eye tracking is a powerful means to control robot arms in closed-loop and real-time, outperforming other invasive and non-invasive approaches to Brain-Machine-Interfaces in terms of calibration time (

关键词： Manipulators Gaze tracking Three-dimensional displays Writing visualization Calibration

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Novel edge detection scheme in the trinion space for use in medical images with multiple components

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2016年 9876 LNCS卷 231-241页

作者： Assefa, Dawit Krejcar, Ondrej Center of Biomedical Engineering Division of Biomedical Computing Addis Ababa Institute of Technology Addis Ababa University Addis Ababa Ethiopia Center for Basic and Applied Research Faculty of Informatics and Management University of Hradec Kralove Hradec Kralove Czech Republic

Very recently we proposed a promising scheme for tissue classification of multi-parametric magnetic resonance images (MP-MRI) of the brain based on signal analysis in higher dimensional vector spaces. The method treats MP-MR images as colors represented holistically in three (trinion) or four (quaternion) algebraic spaces. Compared to the well known quaternions, the recently proposed three component trinions are more efficient in representation of images with three channels and the respective Fourier transforms allow visualization of their wavenumber spectra as a whole. The current study discusses an edge detection scheme based on statistical metrics derived from locally computed trinion Fourier transforms for use in robust edge detection of MP-MR images and other color medical images. Performance of the proposed scheme is compared against a quaternion formulation and with another vectorial approach. Application of the method is shown in edge detection of various color test images and scenes with different degrees of difficulty. Discussion and preliminary results on the application of the proposed scheme on MP-MR images of brain scans of patients treated for glioblastoma multiforme (GBM) have also been included. © Springer International Publishing Switzerland 2016.

关键词： Color

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GEAR: A Mobile Game-Assisted Rehabilitation System

GEAR: A Mobile Game-Assisted Rehabilitation System

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IEEE International conference on Healthcare Informatics (ICHI)

作者： Mufizur Rahman Atreyi Kankanhalli Bimlesh Wadhwa Yeow Chen Hua Cheng Kai Kei Lim Jeong Hoon Sharmila Jayakkumar Chua Cai Lin School of Computing National University of Singapore Singapore Dept. of Biomedical Engineering National University of Singapore Appbition Singapore Department of Medicine National University Hospital National University of Singapore Singapore SG

ISBN: (纸本)9781509061181

Rehabilitation exercises are an important means for gaining mobility and strength after injuries or surgery. Self-exercising in between physio-therapy sessions is vital for effective rehabilitation. Yet, many people do not follow exercise regimes, which can hamper their recovery. This study proposes GEAR - a mobile GamE Assisted Rehabilitation system - to engage users in self-exercising and to improve adherence to their exercise regime. The system consists of a wearable wristband to monitor users' movements, a mobile game that incorporates the exercises, and a dashboard to monitor and visualize users' exercise performance. GEAR has advantages of portability and lower cost as compared to PC or Kinect-based rehabilitation systems. This study describes GEAR and reports on a pilot assessment of its interface and system. The pilot test demonstrates the feasibility of GEAR and provides feedback that is being used to enhance the system prior to full-scale evaluation.

关键词： Games Gears Shoulder Data visualization Land mobile radio Robot sensing systems Medical services

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Visualizing the Brain on a Mixed Reality Smartphone Application 37

Visualizing the Brain on a Mixed Reality Smartphone Applicat...

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37th Annual International conference of the IEEE-Engineering-in-Medicine-and-Biology-Society (EMBC)

作者： Soeiro, Jose Claudio, Ana Paula Carmo, Maria Beatriz Ferreira, Hugo Alexandre Univ Lisbon Fac Sci BioISI Biosyst & Integrat Sci Inst P-1699 Lisbon Portugal Univ Lisbon Fac Sci Inst Biophys & Biomed Engn P-1699 Lisbon Portugal

ISBN: (纸本)9781424492701

Augmented and Virtual Reality approaches are getting more and more advanced and consequently their use in various real world areas is increasing. Medicine is one of the fields in which more practical applications are surfacing, mainly approaches that enable new forms of visualization of data obtained from real patients. Our work focuses on providing a new simple, practical and efficient way to visualize the brain of a patient, both in an Augmented Reality and in a Virtual Reality approach, through a smartphone application.

关键词： augmented reality medical diagnostic computing patient diagnosis smart phones mixed reality smartphone application patient brain visualization virtual reality biomedical imaging Brain models Medical services Solid modeling Virtual reality visualization

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Video saliency prediction with optimized optical flow and gravity center bias

Video saliency prediction with optimized optical flow and gr...

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IEEE International conference on Multimedia and Expo (ICME)

作者： Zhe Wu Li Su Qingming Huang Bo Wu Jian Li Guorong Li Key Lab on Big Data Mining and Knowledge Management University of Chinese Academy of Sciences Beijing China Key Lab of Intelligent Information Processing Institute of Computing Technology Beijing China Capital Medical University Beijing China Beijing University of Posts and Telecommunications China Beijing

ISBN: (纸本)9781467372596

Dynamic videos are viewed fundamentally different from static images. Besides spatial features, motion feature also plays an important role as a temporal factor. Most existing video saliency models usually employ optical flow to represent the motion feature. However, optical flow often suffers from the discontinuity problem. And we also notice that human fixations in one single video frame are much sparser than that in an identical still picture. However, many spatial saliency models take each video frame as static image independently. In this paper, we predict the dynamic visual saliency by fusing spatial and temporal features. In order to construct the temporal relationships among a set of successive frames, we introduce a smoothness operator in optical flow field to obtain more accurate motion feature. Then, considering the sparse property of video saliency, we adapt the weights of the regions surrounding to the saliency gravity center in the final maps. The experiments show that our model is more consistent with humans eye-tracking benchmarks than the state-of-the-art models.

关键词： Optical imaging Gravity Computational modeling visualization biomedical optical imaging Adaptation models Feature extraction

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2015 International conference on Big Data and Smart computing, BIGCOMP 2015

2015 International Conference on Big Data and Smart Computin...

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2015 International conference on Big Data and Smart computing, BIGCOMP 2015

ISBN: (纸本)9781479973033

The proceedings contain 50 papers. The topics discussed include: drawing on millions of biomedical journal publications to do predictive biology;overview of integrative analysis methods for heterogeneous data;scalable graph exploration and visualization: sensemaking challenges and opportunities;distributed real-time knowledge graph serving;serving the readers of scholarly documents: a grand challenge for the introspective digital library;robust network construction against intentional attacks;mind your Ps and Vs: a perspective on the challenges of big data management and privacy concerns;exploring concept graphs for biomedical literature mining;MRDatacube: data cube computation using MapReduce;providing QoS through host controlled flash SSD garbage collection and multiple SSDs;promptly pinpointing mobile RFID tags for large-scale Internet-of-things;and fast index construction for distortion-free subsequence matching in time-series databases.

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Mother and Children Health Reporting System: Innovative Information System Application in the Rural West Bandung Area, Indonesia, by Using Multimodal Communications Systems 4

Mother and Children Health Reporting System: Innovative Info...

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4th International conference on Instrumentation, Communications, Information Technology, and biomedical Engineering

作者： Faried, Ahmad Sutiono, Agung Budi Djuwantono, Tono Arifin, Muhammad Zafrullah Wirakusumah, Firman Fuad Yuniarto, Sony Ari Hariyanto, Hadi Jayadi, Yudi Tri Padjadjaran State Univ Fac Med Bandung West Java Indonesia PT Telkom Innovat & Design Ctr Bandung West Java Indonesia

ISBN: (纸本)9781467378000

Objectives: Digitalization of maternal and post-natal care system (DigiMAPS) is a system consist of electronic medical record for mother and children health (KIA) also for tele-consultation facility called "Tele-Obgyn". Our project focuses on the development of KIA Online and a cloud computing-based video conferencing as a basis of Tele-Obgyn platform. The web-based network allows online access not only among primary health care but also between government and private institution. DigiMAPS platform is designed to meet the needs of database management and its interphase with other services that are responsible for data acquisition and visualization. Methods: DigiMAPS combines the open-source flexible system design that benefits for implementation and development needs as well as support for mobile devices to enable high quality of patient care. The system has been developed gradually following lean-innovation management concept which focuses on customer-problem-solution matching with rapid prototyping and validation from idea to solution. There was significant effort to establish a close relationship and learning process with prospective users of DigiMAPS, hence in the broader perspective we used a participatory research approach. DigiMAPS act as central-portal and -data base in the communication information system (ICT), designed to compile patient report paperless and equipped with tele-consultation. Results: DigiMAPS developed for a variety of administrative processes. This system will simplify the work process and can be integrated with primary health care system, Health Department and the Ministry of Health. A good ICT will be useful in collecting clinical information than conventional paper-based reporting system and to minimize errors in the reporting chain. Conclusions: By using lean innovation management, several inputs are gathered from prospective users including health authority, head of local clinics, midwifes, obgyn doctors, and public health staffs. Ou

关键词： Digitalization of maternal and post-natal care system (DigiMAPS) Medical IT Information Communication System (ICT) eHealth Cloud computing

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