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X-WR-CALDESC:Events for Institute of Mathematics and Informatics
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DTSTART:20260329T010000
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DTSTART;TZID=Europe/Sofia:20260428T140000
DTEND;TZID=Europe/Sofia:20260428T153000
DTSTAMP:20260427T031504
CREATED:20260422T094603Z
LAST-MODIFIED:20260422T105227Z
UID:19139-1777384800-1777390200@math.bas.bg
SUMMARY:Seminar in Operations Research\, Probability and Statistics
DESCRIPTION:On April 28\, 2026 (Tuesday) at 2:00 pm in room 503 of IMI-BAS \nMihail Mukov (Intellics Engineering) \nwill give a talk at the Operations Research\, Probability and Statistics Seminar on: \nModeling Lifting Systems in Waste Collection\n. \nAbstract: \nThis presentation considers the problem of estimating the mass of waste emptied from individual containers by a garbage truck equipped with standard lifting forks for both large 1100-liter containers and smaller waste bins.\nThe main objective is to develop a low-cost measurement system that can be applied to a wide range of truck configurations with only minimal hardware modification.\nThe system combines an oil pressure sensor installed in the hydraulic circuit and a standard smartphone inertial measurement unit fixed on the lifting arm.\nThe pressure sensor provides a measure for determining the lifting force\, while the accelerometer and gyroscope are used to estimate the motion of the lifting arm. From these measurements and a calibrated model\, the dumped waste is determined.\nThe main focus of the presentation is the physical and mathematical structure of the method. This includes:\n\nVirtual reorientation of the sensor to the truck coordinate system.\nPreprocessing of raw sensor data.\nRemoving gyroscope drift.\nIntegration of angular velocity to obtain absolute rotation angle.\nPhysical model with unknown parameters\, formulated in a form suitable for regression-based calibration.\nGradient descent approach\, used for automatic identification of optimal measurement position.\nLinear approximation of the exponential dependence of oil viscosity on temperature\, allowing the system to remain usable at low winter temperatures.\n\nThe lecture is based on a joint research with Damyan Kalaglarsky (Intellics Eng.)  and Prof. Dsc. Ognyan Kounchev (IMI-BAS).\nEveryone interested in the topic is cordially invited to participate.
URL:https://math.bas.bg/event/seminar-in-operations-research-probability-and-statistics-4/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Department%20of%20Operations%20Research%2C%20Probability%20and%20Statistics":MAILTO:jeni@math.bas.bg;
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DTSTART;TZID=Europe/Sofia:20260428T140000
DTEND;TZID=Europe/Sofia:20260428T153000
DTSTAMP:20260427T031504
CREATED:20260424T121355Z
LAST-MODIFIED:20260424T121732Z
UID:19149-1777384800-1777390200@math.bas.bg
SUMMARY:Seminar of the SofTIS Department
DESCRIPTION:We kindly invite you to the seminar of the Software Technologies and Information Systems Dept. at IMI-BAS\, which will take place on April 28\, Tuesday\, at 2:00 p.m. in Hall 278 at IMI-Sofia and  online. Our guest lecturer Desislava Vasileva will present a research overview on Adaptive Educational Software and Game-Based Learning. She will talk on adaptive educational software and game-based learning\, covering three interconnected research lines. The first concerns adaptive hypermedia and e-learning systems\, including formal learner modeling and a platform for adaptive content delivery. The second focuses on game-based learning and player modeling — playing style classification from behavioral data\, physiological affect detection via galvanic skin response\, and a platform for automated generation of adaptive 3D educational games. The third extends this work to serious games for cultural heritage and STEM education\, with ongoing research on multi-modal player modeling combining eye-tracking\, galvanic skin response and behavioral signals for personalized secondary school games.
URL:https://math.bas.bg/event/seminar-of-the-softis-department-11/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Workshop
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