632 research outputs found

    Multiple Object Tracking in Urban Traffic Scenes with a Multiclass Object Detector

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    Multiple object tracking (MOT) in urban traffic aims to produce the trajectories of the different road users that move across the field of view with different directions and speeds and that can have varying appearances and sizes. Occlusions and interactions among the different objects are expected and common due to the nature of urban road traffic. In this work, a tracking framework employing classification label information from a deep learning detection approach is used for associating the different objects, in addition to object position and appearances. We want to investigate the performance of a modern multiclass object detector for the MOT task in traffic scenes. Results show that the object labels improve tracking performance, but that the output of object detectors are not always reliable.Comment: 13th International Symposium on Visual Computing (ISVC

    Visualising kinematics of an elastic Ossur ESR prosthetic foot using novel low-cost optical tracking systems

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    A novel method of measuring kinematics of elastic body is the subject of this investigation. Unlike kinematics of rigid body large elastic deformation tends to modify the dynamics of motion. In the case of amputee runner the change in kinematics of the foot depends on the stiffness, body mass and running beat frequency. Current measurement techniques, such as gait analysis assumes rigid elements. Currently there are inertia measurement unit (IMU) based systems that uses accelerometers and gyro to determine acceleration, velocities and orientations of the sensors. They are not capable of measuring changes in lengths or positions of the objects that they are attached to. For that reason predicting velocities and displacement by integrating acceleration is not always viable due to time step limits of the integrations that are necessary. Here a new optical device is developed and presented that is accurate and is practically error free to monitor Foot elastic deformation. In this paper the Dynamic elastic response of Ossur Running foot is being investigated using this device. The data generated show complete phase synchronisation with IMU but much better accuracy in terms of velocity and relative displacement of the feet due to flexure as a result of elastic response to Impulse

    Capabilities and advantages of cloud computing in the implementation of Electronic Health Record

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    Background: With regard to the high cost of the Electronic Health Record (EHR), in recent years the use of new technologies, in particular cloud computing, has increased. The purpose of this study was to review systematically the studies conducted in the field of cloud computing. Methods: The present study was a systematic review conducted in 2017. Search was performed in the Scopus, Web of Sciences, IEEE, Pub Med and Google Scholar databases by combination keywords. From the 431 article that selected at the first, after applying the inclusion and exclusion criteria, 27 articles were selected for surveyed. Data gathering was done by a self-made check list and was analyzed by content analysis method. Results: The finding of this study showed that cloud computing is a very widespread technology. It includes domains such as cost, security and privacy, scalability, mutual performance and interoperability, implementation platform and independence of Cloud Computing, ability to search and exploration, reducing errors and improving the quality, structure, flexibility and sharing ability. It will be effective for electronic health record. Conclusion: According to the findings of the present study, higher capabilities of cloud computing are useful in implementing EHR in a variety of contexts. It also provides wide opportunities for managers, analysts and providers of health information systems. Considering the advantages and domains of cloud computing in the establishment of HER, it is recommended to use this technology. © 2018 Maryam Ahmadi, Nasim Aslani

    The effect of environmental education on female and male students' knowledge level through visual mass media

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    This study investigates the effects of environmental education on female and male students' knowledge level through visual mass media. The data gathered by researcher made questionnaire which the specialist calculated its reliability (0.77). To get the research aim researcher used semi experimental method using the pre-test and post-test method between experimental and control group. The sample of this study was 60 university students who were selected by simple randomly among 1450 students of Shahid Rajaee teacher training university that didn't pass any course about the environment. Then they were divided randomly to experimental (n = 30) and control (n = 30) groups. The experimental group was taught by using visual (film) mass media, while the control group didn't receive any education. The information processed and analyzed by independent t-test. Results showed that the visual mass media have a positive impact on environmental knowledge of the students. So it is recommended to use visual media productions (videos, clips, etc.) as a platform for delivering knowledge, information and education,  in environmental issues

    Techno-economic assessment and optimization of a solar-assisted industrial post-combustion CO2 capture and utilization plant

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    This paper studies the techno-economic feasibility of the solar-assisted regeneration process of the largest industrial CO2 removal monoethanolamine-based plant in Iran. The plant incorporating parabolic troughs is modelled using System Advisor Model software and the weather data are derived from the European Commission's Photovoltaic Geographical Information System. Sensitivity analyses are realized to evaluate the effect of important parameters, i.e., the solar multiple and the hours of storage, and to reveal the optimum case. The studied impacts are linked to the overall net energy generation and the levelized cost of heat (LCOH). The optimum case is found to have a solar multiple of 3.1 and 18-hours of storage, resulting in a solar share of 0.7 and a LCOH of 3.85 (¢/kWh). When compared to the base case (solar multiple of 2 and 6 h of storage), the optimum solution results in a similar LCOH but it achieves the generation of an additional 16,112 MWhth annually. The thermal energy supplied by the solar system leads to an annual reduction in the natural gas consumption of approximately 3.8 million m3 that results in a CO2 emission reduction of 7.1 kton.The corresponding authors would like to acknowledge the University of Tehran and the Iran’s National Elites Foundation for providing support at this work. The authors would also like to thank Paul Gilman from SAM support at the National Renewable Energy Laboratory. Last but not least, technical supports of the Kermanshah Petrochemical Industries Co. and the Shahrekord Carbon Dioxide Co. are gratefully acknowledged. Fontina Petrakopoulou would like to thank the Spanish Min- istry of Science, Innovation and Universities and the Universi- dad Carlos III de Madrid (Ramón y Cajal Programme, RYC-2016- 20971)

    A comparison of yield potential and cultivar performance of 20 collected purslane (Portulaca oleracea L.) accessions employing seeds vs. stem cuttings

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    A glasshouse experiment was conducted in Universiti Putra Malaysia (UPM) to evaluate the regeneration and yield potential in purslane using both seeds and stem cuttings of 20 collected accessions from different locations in Western Peninsular Malaysia. Analysis results revealed significant variations (P< 0.05) for morphological traits viz., plant height, number of main branches, number of nodes, internodal distance, stem diameter, number of leaves, leaf area, number of flowers, root length, fresh and dry weight but no significant difference were observed for physiological traits viz., total chlorophyll, net photosynthesis, stomatal conductance, transpiration, water vapor deficit and for either major micro or macro minerals. Hope our research findings will eliminate the doubt of using cutting methods for purslane propagation and cultivation among producers and consumers and will promote their determination to follow purslane production in this summer at any season and anywhere. To the best of our knowledge, this is the first attempt to evaluate and to detect any significant variations arising in morphological, physiological, and especially mineral nutrition in purslane propagated through cuttings vs. through seeds
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