1,842 research outputs found

    Analysis of Human-Robot Interactions as a Sustainability Factor

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    Robotic systems are traditionally widespread in the efficient automatization of industrial processes. Recent applications include material handling, reconnaissance, and agricultural tasks, besides the more traditional assembly line tasks. On the other hand, the recent advancements of robotic systems aim at enhancing and even replacing the human workforce in traditional social service tasks, like nursery, clerk positions, eldercare, and catering ‚Äď collectively called social robotics. Developed countries generally suffer from the decreased available workforce in these areas, threatening the long-term availability of such essential services. The robots providing such services are required to appear and behave human-like to some degree to interact with people seamlessly. Human-like behavior requires complex software and hardware systems with learning capabilities to solve social situations appropriately. This paper investigates the relationship between human-robot interactions and sustainability and identifies the foundational similarities between the aims of the two interdisciplinary fields. The paper proposes the effect of complex interaction capabilities on sustainable factors and their possible qualitative verification. The quantitative factors described in this paper are the social perception of different robots and their expected functions defined by the foundational human-robot interaction roles. The paper proposes the possible contribution of future social robot applications to sustainability factors, such as the effect of telepresence. The paper also presents the result of a qualitative survey of participating university students on the acceptance of different types of robots based on their visual appearance. The assumption of possible integration of robots into social roles and what appearance is perceived as acceptable. In summary, this paper highlights the sustainable factors in human-robot interactions by identifying the effects of social robot roles and mapping between corresponsive sustainability factors, most importantly resolving workforce deficit

    Modern robotikai technol√≥giai ismeretek oktat√°sa ‚ÄěTeljes spektrum√ļ‚ÄĚ oktat√°si m√≥dszerrel : Application of ‚Äúfull-spectrum‚ÄĚ teaching methods in the education of modern robotic technology

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    Napjainkban a felt√∂rekvŇĎ technol√≥gi√°k √©s eszk√∂z√∂k jelentŇĎs kih√≠v√°st jelentenek az oktat√°si int√©zm√©nyeknek √©s oktat√≥knak egyar√°nt. Jelen cikk megk√≠s√©rli a multidiszciplin√°ris mŇĪszaki tud√°s √°tad√°s√°t modern oktat√°si m√≥dszertan haszn√°lat√°val egy v√°ltoz√≥ tud√°sh√°tterŇĪ hallgat√≥s√°gnak. A bemutatott m√≥dszertan alapk√©pz√©sben indult bevezetŇĎ robotikai kurzusban ker√ľlt felhaszn√°l√°sra. Jelen m√≥dszertan egyes√≠ti a hagyom√°nyos pedag√≥giai m√≥dszereket a modernekkel, mint a projekt-alap√ļ feladatok, √∂n√©rt√©kel√©s √©s projektbemutat√≥k, hasonl√≥an egy miniszimp√≥ziumhoz. A hallgat√≥k visszajelz√©se alapj√°n az √ļj m√≥dszertan √≠g√©retes, az eredm√©nyek egy r√©sze igazolja elŇĎzetes elv√°r√°sainkat, ugyanakkor felfedi a jav√≠t√°si lehetŇĎs√©geket m√°s t√°rgyak eset√©ben is

    A CPT-szimmetria k√≠s√©rleti ellenŇĎrz√©se lass√ļ antiprotonokkal = Experimental test of the CPT symmetry using slow antiprotons

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    Kutat√≥munk√°nk alapvetŇĎ motiv√°ci√≥ja a CPT-invariancia, anyag √©s antianyag szimmetri√°j√°nak k√≠s√©rleti ellenŇĎrz√©se az ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) Toki√≥-Aarhus-B√©cs-Brescia-Budapest-Debrecen egy√ľttmŇĪk√∂d√©s keret√©ben, a CERN antiproton-lass√≠t√≥ berendez√©s√©n√©l, az antiproton tulajdons√°gainak mind pontosabb m√©r√©s√©vel a proton√©val √∂sszehasonl√≠tva. Az antiproton t√∂meg√©t √©s t√∂lt√©s√©t antiprotonos h√©liumatomok energi√°tmeneteinek l√©zerspektroszk√≥pi√°s m√©r√©s√©vel hat√°rozzuk meg, a m√°gneses momentum√°t pedig felhasadt hiperfinom √°llapotok gerjeszt√©s√©vel l√©zer-mikrohull√°m-l√©zer h√°rmas rezonancia seg√≠ts√©g√©vel. A t√∂meg √©s t√∂lt√©s meghat√°roz√°s√°t √©vrŇĎl √©vre tov√°bb pontos√≠tottuk a l√©zertechnika jav√≠t√°s√°val √©s lass√ļ antiprotonnyal√°b kialak√≠t√°s√°val, amely lehetŇĎv√© tette az antiprotonok meg√°ll√≠t√°s√°t igen kis nyom√°s√ļ (<1 mbar) g√°zban √©s meghonos√≠tottuk a k√©tfotonos, csaknem teljesen Doppler-mentes l√©zerspektroszk√≥pia m√≥dszer√©t. Sikeres elsŇĎ k√≠s√©rletsorozatot v√©gezt√ľnk a m√°gneses momentum m√©r√©s√©re. JelentŇĎs √ļjabb eredm√©nyeket √©rt√ľnk el a MUSASHI lass√ļ antiproton-forr√°s fejleszt√©s√©ben is, az komoly felhaszn√°l√≥i berendez√©ss√© nŇĎtte ki mag√°t. Befejezt√ľk az antihidrog√©n m√°gneses momentum√°nak m√©r√©s√©re szolg√°l√≥ berendez√©s terveit √©s megkezdt√ľk annak √©p√≠t√©s√©t. Az antiprotonos k√≠s√©rletek √©rtelmez√©s√©hez sz√ľks√©ges a lass√ļ t√∂lt√∂tt r√©szecsk√©k √ľtk√∂z√©si folyamatainak tiszt√°z√°sa, abban is jelentŇĎs - fŇĎleg elm√©leti - eredm√©nyeket √©rt√ľnk el. | The basic motivation of our research work is the experimental test of CPT invariance, the symmetry principle of matter and antimatter within the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) Tokyo-Aarhus-Brescia-Budapest-Debrecen-Vienna collaboration at the Antiproton Decelerator facility at CERN. We measure the properties of the antiproton in comparison with those of the proton. The mass and charge of the antiproton is determined by measuring the transition energies of antiprotonic helium using laser spectroscopy and its magnetic moment via exciting transitions with hyperfine splitting using a laser-microwave-laser triple resonance technique. We have increased the precision of determining the antiproton mass and charge by improving the lasers and by forming a slow antiproton beam which facilitates stopping it in gases of very low (<1 mbar) pressures and performed a first measurement using quasi Doppler-free two-photon spectroscopy. We completed the first successful series of measurements of the magnetic moment of the antiproton. The development of the MUSASHI slow antiproton source is almost complete, it became a real user facility. We have completed the design of the apparatus for measuring the magnetic moment of antihydrogen atoms and started its construction. For the interpretation of the antiprotonic experiments the collision processes of slow charged particles have to clarified: we made good - mostly theoretical - progress there as well

    Numerical Examination of a Forest Area Fire

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    An important task of sustainability is the protection of Earth's forests and the prevention of forest fires. In this paper, the numerical examination of a typical Hungarian ash forest fire is presented. The connection between sustainability and forest fire simulations is also discussed. For the simulation, a Fire Dynamics Simulator was selected, and a particle-based model was used. The simulation setup, which includes a random location of trees following Poisson distribution, is also explained. Then, the simulation of a 10x10 m area of ash forest is presented. It was found that in case of arson, the fire spreads rapidly among the trees, and there will be a high-intensity fire in which the forest area burns down in 4 min. The mass loss rate, the temperature, and the heat release rate also increased fast (above 50 kg/s, above 2,000 ¬įC and above 800,000 kW). The aerosol concentration reached a high pollutant concentration (1.3x10-6), and the carbon dioxide concentration also increased significantly (above 14,000 ppm). These changes have a direct effect on climate change. Therefore, it is important to examine them in a simulation environment. The simulation was compared to a pine tree forest simulation, and it could be observed that in the case of the pine tree, the values are similar, but phenomena occur faster. With the computer simulation, it is easier to determine the areas affected by the fire, which also helps fire prevention and firefighting. The aim of the research is to contribute to the prevention and more efficient extinguishment of wildfires and the sustainability of the Earth

    K√©pez√ľnk, de kinek? (A felsŇĎfok√ļ agr√°rszakember-k√©pz√©s tudom√°nyos megalapoz√°sa) = We teach, but to whom? (Contribution to the laying of scientific foundations of agricultual higher education)

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    A kutat√°s sor√°n felt√°rtuk a magyar agr√°r-√©s √©lelmiszeripari k√∂z√©p-√©s felsŇĎoktat√°si int√©zm√©nyekben tanul√≥k motiv√°ci√≥s rendszer√©t, szakmai amb√≠ci√≥ikat. A k√∂z√©pfok√ļ oktat√°sban tanul√≥k szakmai motiv√°ci√≥i alacsonyak. A szakk√∂z√©piskol√°k p√°lyaorient√°ci√≥s szerepe gyenge. A felsŇĎoktat√°sban tanul√≥k √©rt√©krendszere, ismeretk√∂reinek jellege √©s k√©sŇĎbbi szakmai amb√≠ci√≥i k√∂z√∂tt matematikai ‚Äďstatisztikai eszk√∂z√∂kkel igazoltunk kapcsolatot. Munk√°nk eredm√©nyei a hallgat√≥i √©rt√©krend idŇĎbeli √°talkul√°s√°t igazolj√°k. A felsŇĎoktat√°si int√©zm√©nyekben tanul√≥kn√°l cs√∂kkent a k√©sŇĎbbi, szŇĪk √©rtelemben vett szakmai munka vonzereje. A v√©gzettek √∂sszess√©g√©ben el√©gedettek a k√©pz√©ssel, de az egyes ismeretk√∂r√∂k oktat√°s√°nak meg√≠t√©l√©se jelentŇĎs sz√≥r√°st mutat. Nagym√©rt√©kben nŇĎtt az elsŇĎ munk√°ba-l√©p√©sig eltelt idŇĎ. A j√∂vedelem-szintben ugyanazon beoszt√°s eset√©n 2-3 ‚Äďszoros elt√©r√©sek is megfigyelhetŇĎk haz√°nk egyes ter√ľletei k√∂z√∂tt. Az int√©zm√©nyi k√∂zgazdas√°gtan eszk√∂zeivel bemutattuk, hogy a felsŇĎoktat√°s strukt√ļr√°j√°ban a k√∂zelj√∂vŇĎben-az √©rdek-rendszerek elt√©r√©se miatt- nem v√°rhat√≥ gyors √°talakul√°s. A kutat√°s eredm√©nyei k√∂zvetlen t√°mogat√°st adnak a beiskol√°z√°si munk√°hoz, az oktat√°s tartalmi fejleszt√©s√©hez, valamint az alumni rendszerek mŇĪk√∂dtet√©s√©hez. A kutat√°s eredm√©nyek√©nt kutat√≥mŇĪhely√ľnk kezdem√©nyezŇĎ szerepet v√°llalt az EU FP keretprogramb√≥l finansz√≠rozott, Track-Fast: Oktat√°si ig√©nyek √©s karrierlehetŇĎs√©gek a tud√°salap√ļ √©lelmiszertudom√°nyban √©s technol√≥gi√°ban c√≠mŇĪ project elind√≠t√°s√°ban √©s megval√≥s√≠t√°s√°ban. | In framework of the research, based on a series of direct-question surveys we have determined the motivation system of students in secondary and third level of agro-food education systems. The level of motivation is relatively low in case of students if secondary education. Our results highlight the necessity of deep rooted intitutional changes in secondary education system and the failures of reforms of last decades. The professional orientation role of vocational schools is rather low. In case of students in higher education we had been able a significant relationship between the value system, the types-of knowledge and the professional ambitions. The professional attractiveness of agro-food institutes is relatively low. There is a rather rapid change in value system of students. There are numerous symptoms of saturation on the labour market. The evaluation of professional content of curricula by graduated students is relatively favourable. The chances of income-generating show an extremely large scattering between different regions of Hungary. Based on approach of institutional economy, with MACTOR method we have determined the possibilities of forging coalition between the most important forces, shaping the higher education system. Based on results of research, the Budapest Corvinus University had been able to participate in EU FP 7 framework project, titled: Track Fast: Training Requirements and Careers for Knowledge-based Food Science and Technology in Europe

    √ĖnvezetŇĎ funkci√≥k megval√≥s√≠t√°s√°ra alkalmas j√°rmŇĪ Unreal Engine 4 alap√ļ szimul√°ci√≥ja: Self-driving vehicle simulation based on Unreal Engine 4

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    The development of self-driving, autonomous vehicles is amongst the fastest-developing fields. One of the most important elements of developments in connection with this topic is the processing and the application of vision sensor data. In order to use vision sensor data for environmental perception, neural networks, self-learning algorithms are applied. The calibration of visual sensors and the training of neural networks requires measurements and visual sensor data. The process of sensor data acquisition and training image set creation is time-consuming and cannot be considered as cost-effective. The aim of this paper is to present the creation process of a computer simulation with the purpose of simulating a vehicle mounted with visual sensors. The result of the simulation process is presented through examples and use cases for a specific passenger car and visual sensor. The application of environmental parameters will be separately presented. By the use of the presented computer simulation method, it is possible to replace the time-consuming and expensive measurement and data acquisition processes by a simulated vehicle and sensor model. Kivonat Az √∂nvezetŇĎ, vagy ak√°r auton√≥m j√°rmŇĪvek fejleszt√©se napjaink hangs√ļlyos ter√ľlet√©v√© v√°lt. Ezen ter√ľleten v√©gzett fejleszt√©sek fontos eleme sok egy√©b mellett a j√°rmŇĪ fed√©lzeti vizu√°lis szenzoraib√≥l kinyert k√©pinform√°ci√≥k megfelelŇĎ feldolgoz√°sa √©s alkalmaz√°sa. A k√©pinform√°ci√≥k feldolgoz√°s√°hoz neur√°lis h√°l√≥kra, √∂ntanul√≥ algoritmusokra van sz√ľks√©g. A szenzorok kalibr√°l√°s√°hoz √©s a neur√°lis h√°l√≥k tan√≠t√°s√°hoz sz√°mos m√©r√©sre, k√©padatra van sz√ľks√©g, melyek elŇĎ√°ll√≠t√°sa k√∂lts√©ges √©s idŇĎig√©nyes feladat. Jelen cikk c√©lja olyan sz√°m√≠t√≥g√©pes szimul√°ci√≥s elj√°r√°sok l√©trehoz√°s√°nak bemutat√°sa, amelyek √°ltal √∂nvezetŇĎ funkci√≥k megval√≥s√≠t√°s√°ra alkalmas j√°rmŇĪvek k√©pi inform√°ci√≥kat r√∂gz√≠tŇĎ fed√©lzeti √©rz√©kelŇĎi pontosan, val√≥s√°ghŇĪen szimul√°lhat√≥k. A szimul√°ci√≥s elj√°r√°sok alkalmaz√°sa egy meghat√°rozott j√°rmŇĪ √©s szenzor eset√©ben, p√©ld√°kon kereszt√ľl ker√ľl bemutat√°sra. A szimul√°ci√≥ alkalmaz√°s√°nak bemutat√°sa sor√°n k√ľl√∂n esetk√©nt ker√ľl kezel√©sre a k√∂rnyezeti viszonyok szimul√°toron bel√ľli param√©terezhetŇĎs√©ge. A szimul√°lt j√°rmŇĪ √©s szenzor √°ltal lehetŇĎs√©g ny√≠lik a kor√°bban eml√≠tett idŇĎig√©nyes √©s k√∂lts√©ges folyamatok szimul√°ci√≥val t√∂rt√©nŇĎ kiv√°lt√°s√°ra ‚Äď a vizu√°lis szenzorok kalibr√°ci√≥ja √©s a k√©padatgyŇĪjt√©s lehetŇĎv√© v√°lik szimul√°ci√≥k haszn√°lat√°val. &nbsp

    Inequalities in regional excess mortality and life expectancy during the COVID-19 pandemic in Europe

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    Using data for 201 regions (NUTS 2) in Europe, we examine the mortality burden of the COVID-19 pandemic and how the mortality inequalities between regions changed between 2020 and 2022. We show that over the three years of the pandemic, not only did the level of excess mortality rate change considerably, but also its geographical distribution. Focusing on life expectancy as a summary measure of mortality conditions, we find that the variance of regional life expectancy increased sharply in 2021. This was due to a much higher-than-average excess mortality in regions with lower pre-pandemic life expectancy. While the life expectancy inequality has returned to its pre-pandemic level in 2022, the observed life expectancy in almost all regions is far below that expected without the pandemic
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