Academic literature on the topic 'LEGO sorting system'

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Journal articles on the topic "LEGO sorting system"

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Nomaguchi, Yutaka, Masashi Mizuta, Masaya Hirooka, and Kikuo Fujita. "Study on Knowledge-Based Product Design Framework for Facilitating the Interaction of Model Based Development and Prototyping." International Journal of Automation Technology 8, no. 3 (May 5, 2014): 344–55. http://dx.doi.org/10.20965/ijat.2014.p0344.

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Model-based development is a potential approach to designing complicated mechatronic systems. This paper proposes a product design framework for mechatronic systems, which integrates model-based development with prototyping and focuses on its process of deployment with hypothesis and verification. SysML is adopted as the modeling language for representing the mechatronic system without depending on specific domains, and FMEA is adopted as the method for describing the results of validation by prototyping. The DRIFT framework is used to capture designer’s operations on the design tools of SysML and FMEA and to manage its process. This study defines design concepts and design operations that are extracted from the patterns embedded in design process with SysML and FMEA. A design example of a ball-sorting robot is created using LEGO Mindstorms to demonstrate the proposed framework.
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Madichetty, Sreedhar, Abhijit Dasgupta, and Sambeet Mishra. "Voltage Balancing Scheme in MMC – A New Approach." International Journal of Emerging Electric Power Systems 15, no. 4 (August 1, 2014): 389–99. http://dx.doi.org/10.1515/ijeeps-2014-0096.

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Abstract This article proposes an online voltage balancing scheme using a new comparative reference wave modulation technique applied to modified modular multilevel converter (MMMC). Recent applications of modular multilevel converter (MMC) in high-voltage DC systems experience many problems with unbalancing of upper and lower arms, due to which circulating currents are rotating in the legs of MMC. These circulating currents pass through the arm inductors and create power loss across the inductor which consequently affects the efficiency of system. In order to overcome the unbalancing and to reduce the power losses, it proposes a new topology for existing MMC called as MMMC. Its main idea is to the balance the system voltage according to the difference between upper and lower arm currents. The upper and lower arm capacitors voltages can be well balanced by proposed technique. Compared to conventional PWM methods, this method can be realized easily. Particularly, this method has not used any kind of sorting technique, which makes it suitable for MMC with a large number of sub-modules. With experiments, the proposed method has been verified successfully.
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Fiatno, Aris, and Nur Aliza. "PERNERAPAN ERGONOMI DI INDUSTRI KELAPA SAWIT MENGGUNAKAN METODE OVAKO WORKING ANALYSIS SYSTEM PADA STASIUN PERNYORTIRAN TBS (STUDI KASUS DI PT XYY)." Jurnal Teknik Industri Terintegrasi 3, no. 2 (January 4, 2021): 1–5. http://dx.doi.org/10.31004/jutin.v3i2.1345.

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Harvesting, loading and sorting activities in palm oil industry that conducted manually have some risks that can cause musculoskeletal disorders (MSDs). This is happened due to repetitive of manual working, standing and bending position for 8 hours and 6 working days, this activity does not match the anthropometry of worker body. The analysis of the Nordic Body MAP questionnaire shows that the biggest complaints experienced by harvest workers are on the back (90%), right shoulder (60%), waist (15%), right calf (40%) the same as the forearm and left calf (30%). ).Work posture analysis using the OWAS method also supports the results of the NBM questionnaire analysis with the results of the analysis of the dominant bent shoulder attitude carried out by 68% (category 2), the attitude of the two arms is 53% (category 2) and the stance of the legs resting on both bent knees. 47% (category 3) with a combination of harvest posture code 4-2-2-2 (category 3).
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Pons, Dirk J. "Explanation of Photon Navigation in the Mach-Zehnder Interferometer." Optics 1, no. 3 (September 28, 2020): 243–54. http://dx.doi.org/10.3390/opt1030018.

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Photons in interferometers manifest the functional ability to simultaneously navigate both paths through the device, but eventually appear at only one outlet. How this relates to the physical behaviour of the particle is still ambiguous, even though mathematical representation of the problem is adequate. This paper applies a non-local hidden-variable (NLHV) solution, in the form of the Cordus theory, to explain photon path dilemmas in the Mach–Zehnder (MZ) interferometer. The findings suggest that the partial mirrors direct the two reactive ends of the Cordus photon structures to different legs of the apparatus, depending on the energisation state of the photon. Explanations are provided for a single photon in the interferometer in the default, open-path, and sample modes. The apparent intelligence in the system is not because the photon knows which path to take, but rather because the MZ interferometer is a finely-tuned photon-sorting device that auto-corrects for randomness in the frequency phase to direct the photon to a specific detector. The principles also explain other tunnelling phenomena involving barriers. Thus, navigation dilemmas in the MZ interferometer may be explained in terms of physical realism after all.
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Huang, Zhenhan, and Fumihide Tanaka. "MSPM: A modularized and scalable multi-agent reinforcement learning-based system for financial portfolio management." PLOS ONE 17, no. 2 (February 18, 2022): e0263689. http://dx.doi.org/10.1371/journal.pone.0263689.

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Financial portfolio management (PM) is one of the most applicable problems in reinforcement learning (RL) owing to its sequential decision-making nature. However, existing RL-based approaches rarely focus on scalability or reusability to adapt to the ever-changing markets. These approaches are rigid and unscalable to accommodate the varying number of assets of portfolios and increasing need for heterogeneous data input. Also, RL agents in the existing systems are ad-hoc trained and hardly reusable for different portfolios. To confront the above problems, a modular design is desired for the systems to be compatible with reusable asset-dedicated agents. In this paper, we propose a multi-agent RL-based system for PM (MSPM). MSPM involves two types of asynchronously-updated modules: Evolving Agent Module (EAM) and Strategic Agent Module (SAM). An EAM is an information-generating module with a Deep Q-network (DQN) agent, and it receives heterogeneous data and generates signal-comprised information for a particular asset. An SAM is a decision-making module with a Proximal Policy Optimization (PPO) agent for portfolio optimization, and it connects to multiple EAMs to reallocate the corresponding assets in a financial portfolio. Once been trained, EAMs can be connected to any SAM at will, like assembling LEGO blocks. With its modularized architecture, the multi-step condensation of volatile market information, and the reusable design of EAM, MSPM simultaneously addresses the two challenges in RL-based PM: scalability and reusability. Experiments on 8-year U.S. stock market data prove the effectiveness of MSPM in profit accumulation by its outperformance over five different baselines in terms of accumulated rate of return (ARR), daily rate of return (DRR), and Sortino ratio (SR). MSPM improves ARR by at least 186.5% compared to constant rebalanced portfolio (CRP), a widely-used PM strategy. To validate the indispensability of EAM, we back-test and compare MSPMs on four different portfolios. EAM-enabled MSPMs improve ARR by at least 1341.8% compared to EAM-disabled MSPMs.
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Varsan, Evhen. "Features of organization of medico-legal expert researches in the cases of the mass injuring of victims in the salon of bus." Forensic-medical examination, no. 1 (May 29, 2017): 31–37. http://dx.doi.org/10.24061/2707-8728.1.2017.7.

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The article deals with certain medico-legal aspects of trauma in the salon of bus as one of the types of road traffic accidents with a large number of dead and injured. Are shown the typical causes of such incidents and the nature of the victims injury. Was developed and proposed a modern approach to optimization of expert research in case of appearance a large number of victims in the bus. Circumstances of injury in case of personal injury people in the bus are very diverse:− rollover of the bus when transporting a large number of people while driving;− bus falling from height;− a massive collision with a fixed roadside objects; − collision with other vehicles; among the latter is the most fatal bus collision with a moving train.Naturally, in these cases, the massive injuries have affected depends on the intensity of injury to passengers in the bus, and the mechanism of damage is determined by the specific form of an accident involving a bus. In such cases, the experts faced, usually with mechanical trauma inside the cabin, and mixed types of injuries passengers (e.g. in case of fire). For in-car trauma characterized by formation damage from the following mechanisms:− shock bodies on the inner part of the interior (interior);− injuries from the shards of broken glass.Basically, the nature of injury is determined by the structural features of the bus, the presence of foreign objects, the location of the victims. If the vehicle rolls over, the occupants people are numerous additional impact. Formed characteristic for the driver damage to the hands, fractures of the sternum fractures of the hips, legs and feet. For passengers is characteristic fractures of the lower limbs, bruised head wounds, fractures and dislocations of the cervical spine when using the seat belts − stripe-like bruises and abrasions ofthe chest and abdomen, broken ribs, collarbone, sternum, in the projection of the belts. Shards of broken glass caused by the multiple linear abrasions and (or) surface or deep cut wounds mainly in the face and upper extremities. In the case of deformation of the bus body can be compression of the bodies are formed by damage to several areas, primarily the chest, abdomen, extremities, accompanied by multiple bilateral rib fractures, ruptures of internal organs. If in the future there is a fire or explosion of the vehicle, the nature of thedamage detected on the bodies will correspond to the combined injury.In cases of injuries in the bus to work with the bodies of the victims begins at the scene. Thus, the Protocol of inspection of the scene and of the corpse in the first place should reflect the data about the mutual position of bodies and (or) their fragments relative to the vehicle and other parts, the distance between them; the condition of clothing, odors from it, the presence of different overlays, damage; contamination of the skin; localization and nature of the injuries on the bodies, the presence of deformations of its individualparts; the presence of traces of biological origin on the vehicle in comparison with the nature of the deformation (damage) of the body.Be sure to note the results of the inspection of the road where there was a traffic accident, a bus traces of blood, and fragments of various things, etc. Despite the small percentage of bus injured in world General statistics of fatal injuries, it presents certain difficulties in planning, organization, execution and coordination of forensic work on multi-step liquidation of medical consequences of the accident, usually associated with a large number of victims, gross impact of factors affecting on the bodies of the victims, the need to quickly address some specific issues: establishing at autopsy pathological symptoms that indicate the status of the health of drivers in the period priorto the tragic event; the existence of facts pointing to the use of intoxicating and medicinal substances that depress the nervous system and many others), early identification of all victims. According to the results of the analysis made it impossible to offer modern, optimal, evidence-informed, and until only itremains to be reliable in practice the system approach to the organizational model of forensic activities, while ensuring the interests of the investigation of an accident involving a bus and a large number of victims:1. The preliminary stage of organization expert services. It can conditionally enough be divided into 2 phases:− advance (pre-) phase;− the immediate phase.To the basic questions of the early phases include: early development, coordination and approval of the optimal legislative and other regulatory framework; preliminary methodological, administrative and organizational, theoretical-practical, logistical, software and applied training; exercise reasonable estimates of projected short and long term needs and costs with regard to the peculiarities specified by the tragic events; creation, storage, use and replenishment of the trust reserves, logistical and financial resources areinviolable, is intended solely for use in such emergencies. It also includes the creation, maintenance and continuous improvement of a Single centralized situation center on a temporary or permanent basis, with a good system of departmental and interdepartmental cooperation, primarily containing a - operational information-Supervisory and analytical center for the collection, processing, storage, information exchange and joint action with the threat, occurrence and prevention of emergencies with a large number of victims.Immediately with the receipt of the news of the accident involving a bus and a large number of victims for forensic services begin immediate phase, the main elements of which include:− prompt notification and collection of employees and expert institutions;− an emergency conference call to discuss the organizational, theoretical and practical questions and short specialized trainingon occupational safety, including use of personal protective equipment depending on the nature of the accident and actions are potentially dangerous to health and life of employees and expert institutions factors.All plans of measures are necessarily coordinated and agreed with appropriate representatives of structures of fast reaction, especially when conducting urgent investigative actions in the emergency areas, primarily the inspection of the scene. 2. The inspection of the crime scene it is advisable to start with a preliminary review («intelligence»), which finally determined the necessity of application of those or other technical means, and the number of specialists who will participate in the inspection.The static phase of scene examination with the participation of forensic doctors is accompanied by clear mapping; mapping, photo - and video fixing of vehicle, various objects; it is noted the exact relative positions of the bus (its parts) and discovered the corpses, fragments of human remains and other biological material. During dynamic examination of the scene produce a detailed external examination of the human remains, their fragments, biological material, perform primary medical sorting, their careful packaging,clear detailed marking. Then performed the proper loading, transportation and unloading. In case of need in a temporary Deposit of biological material, can be used in railway wagons refrigerators, refrigerated trailers, mobile camera with a refrigeration unit, and in the absence or lack of volume for the total number of remains and the biomaterial deploys heat-resistant boxes, fit the space with the use of outdoor mobile air conditioning systems, large amounts of ice obtained from specialized industrial ice makers, etc., which is especially important for braking processes of rotting corpses, their fragments and biomaterial in the warm season.3. After the initial registration and a secondary sort examine corpses, their fragments and biological material collection for postmortem identification of significant information, determine the cause of death, nature, mechanism and prescription of formation damage and address other special issues. At this stage also produce the identification of fragmented body parts and (or) tissues that or another body. In expert identification work on the fragments of human remains or biological material, preference is given to genetic research providing highly accurate results. Depending on the extent of influence of damaging factors on the bodies of the victims and their degree of preservation, only after the completion of the necessary is judicial-medical research with a full range of fence material for additional research, producing restoration of the exterior, embalming, sanitary and cosmetic processing of human remains and give them to relatives (relatives, authorized representatives, etc.) for burial. 4. Issued the final results of examinations; establishes data that may be useful for later investigative and judicial actions aimed at gathering and verification of evidence in a criminal case.5. The penultimate stage consists of conducting sanitary-and-hygienic, treatment-and-prophylactic, rehabilitation (including a full psychological) of interventions for physical and mental health of employees and expert institutions involved in this work.6. After the conclusion of the criminal proceedings in general, with the official opening of data access, it is advisable to analyze the material, and publish the relevant data in the scientific literature, with the goal of widespread study and use of gained experience.CONCLUSIONS.1. Research platform forensic activities in cases of accidents involving buses and a large number of victims to date have not been developed.2. The effectiveness of forensic medical groups in this situation is in direct proportion to the degree of readiness for quick response and timely quality completion of tasks.3. Based on this, very urgent is the development of modern optimal evidence-based systemic approach to the organizational model of forensic activities in the presence of a large number of injured persons in the bus; the solution to this problem and sent the above recommendations.4. The recommendations, in principle, can be applied not only in cases of injuries in the bus, but also to similar situations in which there is a massive injury and loss of life.5. It is necessary to continue scientific and practical research aimed at improving this algorithm works experts.
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Iversen, Torsten K., Kåre J. Kristoffersen, Kim G. Larsen, Morten Laursen, Rune G. Madsen, Steffen K. Mortensen, Paul Pettersson, and Chris B. Thomasen. "Model-Checking Real-Time Control Programs. Verifying LEGO Mindstorms Systems Using UPPAAL." BRICS Report Series 6, no. 53 (December 23, 1999). http://dx.doi.org/10.7146/brics.v6i53.20123.

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In this paper, we present a method for automatic verification<br />of real-time control programs running on LEGO <br />RCX bricks using the verification tool UPPAAL. The control<br />programs, consisting of a number of tasks running concurrently,<br />are automatically translated into the timed automata<br />model of UPPAAL. The fixed scheduling algorithm<br />used by the LEGO RCX processor is modeled in UPPAAL,<br />and supply of similar (sufficient) timed automata<br />models for the environment allows analysis of the overall<br />real-time system using the tools of UPPAAL. To illustrate<br />our techniques we have constructed, modeled and verified<br />a machine for sorting LEGO bricks by color.
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Conference papers on the topic "LEGO sorting system"

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Anuar, Sazly, Allya Badzura Baharuddin, and Amirah Mohammad. "Lego bricks color sorting machine." In 2016 2nd International Symposium on Agent, Multi-Agent Systems and Robotics (ISAMSR). IEEE, 2016. http://dx.doi.org/10.1109/isamsr.2016.7810018.

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