305 research outputs found
Politikaelméleti paradigmák = The Paradigms of Political Theory
A kutatás kiindulĂłpontjául az az általánosan osztott feltĂ©telezĂ©s szolgált, hogy a huszadik század vĂ©gĂ©n Ăşj korszak köszöntött be az eurĂłpai demokráciák törtĂ©netĂ©ben; van itt tehát valami radikálisan Ăşj, ami Ă©rtelmezĂ©st kĂván. A kutatás elĹ‘feltevĂ©se, hogy a modern demokrácia, illetve demokráciák termĂ©szete megĂ©rthetetlen a politikai tudás mibenlĂ©tĂ©re feltett kĂ©rdĂ©s nĂ©lkĂĽl. De, hogy mi is lenne az a bizonyos „politikai” Ă©s az ehhez kapcsolĂłdĂł tudás, abban viszont már egyáltalán nincs egyetĂ©rtĂ©s. A kutatás cĂ©lja az volt, hogy feltárja, elkĂĽlönĂtse Ă©s Ă©rtelmezze azokat a politikaelmĂ©leti paradigmákat, amelyek a politikai tudás mibenlĂ©tĂ©re irányulĂł kĂ©rdĂ©seket a modern demokráciák megĂ©rtĂ©sĂ©nek a szándĂ©kához kapcsolják. Az Ăgy vizsgált „politikaelmĂ©letet” a kutatás egyfelĹ‘l szűken fogta fel, amennyiben a kormányzás, a politikai vezetĂ©s Ă©s az állam kulcsfogalmaira összpontosĂtott, másfelĹ‘l tág teret is nyitott a lehetsĂ©ges paradigmáknak, mivel azokat a koncepciĂłkat is vizsgálat tárgyává tette, amelyek a politika termĂ©szetĂ©nek realista megközelĂtĂ©sĂ©vel szemben Ă©ppensĂ©ggel az állam Ă©s kormányzás jelensĂ©gĂ©nek szkeptikus vagy Ă©ppen depolitizálĂł szándĂ©kával lĂ©pnek fel. A kutatás egyĂşttal a modern demokráciák Ă©s a politikai tudás összefĂĽggĂ©seit hangsĂşlyozva a vizsgált kĂ©rdĂ©seket az univerzalizmus-partikularizmus vita tengelyĂ©ben is elhelyezte, elsĹ‘sorban a politikai tudás civilizáciĂłkhoz valĂł kötöttsĂ©gĂ©re, valamint egyugyanazon nĂ©zetrendszeren belĂĽli eltĂ©rĹ‘ elĹ‘feltevĂ©sekre, illetve következetĂ©sekre irányĂtva a figyelmet. | The starting point of the research would be the widely shared notion that at the end of the 20th century a new era in the history of European democracies began; something radically different that demands interpretation. The pre-supposition of the research would be that the nature of modern democracy, or democracies, cannot be understood without questioning the nature of political knowledge. On the other hand, there is absolutely no consensus on what we should mean by “the political,” and knowledge related to it. The aim of the research would be to explore, isolate, and interpret paradigms in political theory which connect questions related to the nature of political knowledge to the intention to understand modern democracies. The research conceived the examined “political theory” in a scaled down frame as it focused only on the key concepts of governance and political leadership, but on the other hand, it opened the possible paradigms up as well, because it investigated the concepts that are inclined to depolitise and question the phenomenon of the sate and governance instead of applying the realistic approach to politics. At the same time, by emphasizing the interrelationships between modern democracies and political knowledge, my research placed the examined issues in the axis of universalist-particularistic discussion, and primarily drove the attention to the civilisational dependence of political knowledge, also to the differing premises and consequences of the same system of view
Hybrid position and force control algorithm expansion of a robot control system
At the Technical University of Budapest within the scope of a project supported by the
Hungarian Research Fund (OTKA, grant No. T029072) an experimental robot control
system has been
developed. Last year a new component, a six-axis force/torque sensor and the related
control unit were added to the system, allowing to implement the hybrid position and
force control algorithm. The purpose of this study is to describe the new hardware
component and its tasks within the control system. The paper presents an overview of
the control algorithm and summarises the architecture of the experimental robot control
and the force/torque sensor systems. Then the architecture of the hardware designed and
its computing task are outlined. Finally, estimation for the cycle time required by the
calculations is given
Dowker-type theorems for hyperconvex discs
A hyperconvex disc of radius r is a planar set with nonempty interior that is the intersection of closed circular discs of radius r . A convex disc-polygon of radius r is a set with nonempty interior that is the intersection of a finite number of closed circular discs of radius r . We prove that the maximum area and perimeter of convex disc- n -gons of radius r contained in a hyperconvex disc of radius r are concave functions of n , and the minimum area and perimeter of disc- n -gons of radius r containing a hyperconvex disc of radius r are convex functions of n . We also consider hyperbolic and spherical versions of these statements
Diszkrét geometria és geometriai algebra = Discrete geometry and geometric algebra
Nagy G. olyan geometriai struktĂşrákat vizsgált, melyek Moufang-fĂ©le Ă©s Bol-fĂ©le egysĂ©gelemes kvázicsoportokkal (loopokkal) koordinátázhatĂłak. a) Kis Frattini 2-loopok, azaz melyeknĂ©l L/A elemi Abel 2-csoport valamely 2-rendű A normális rĂ©szloopra. A Bol-esetben explicit formulát, a Moufang-esetben Ăşj globális konstrukciĂłt adott. b) Moufang-fĂ©le p-loopok, p>3. Ilyen loopokra korábban nagyon kevĂ©s pĂ©lda volt ismert. Nagy G. M. Valsecchivel fontos azonosságokat talált nilpotens Moufang-loopokra Ă©s egy általános Ăşj konstrukciĂłt talált, továbbá osztályozták a p^5 (p>3) rendű Moufang-loopokat is. c) Kis Moufang- Ă©s Bol-loopok osztályozása, a P. Vojtechovsky-val közösen kĂ©szĂtett komputeralgebrai programcsomag felhasználásával. Fodor F. megtalálta 13 Ă©s 14 egybevágĂł kör körbe valĂł legsűrűbb elhelyezĂ©seit. Ambrus G.-vel közösen Fodor F. Ăşj alsĂł korlátot bizonyĂtott 3-dimenziĂłs egysĂ©ggömb elhelyezĂ©sekbeli Voronoi cellák felszĂnĂ©re. T. Bisztriczkyvel Ă©s D. Oliverosszal közösen Fodor F. bebizonyĂtotta, hogy ha egy páronkĂ©nt diszjunkt körökbĹ‘l állĂł rendszerben minden 4-elemű rĂ©szhalmaznak van transzverzálisa, akkor van olyan egyenes, ami legfeljebb egy kivĂ©telĂ©vel a rendszer minden elemĂ©t metszi. Ambrus G.-vel Ă©s Bezdek A.-val közösen Fodor F. megmutatta, hogy ha egy n-dimenziĂłs egysĂ©ggömbökbĹ‘l állĂł rendszerben, ahol a közĂ©ppontok távolsága legalább 3.6955..., minden n^2-elemű rĂ©szhalmaznak van transzverzálisa, akkor az egĂ©sz rendszernek is van transzverzálisa. Fodor F. W. Kuperberggel Ă©s T. Bisztriczkyvel közösen ""Discrete Geometry"" cĂmű konferenciakötetet szerkesztett. | G. Nagy studied geometric structures which can be coordinatized by Moufang and Bol loops. a) Small Frattini 2-loops are loops L with a normal subloop A of order 2 such that L/A is an elementary Abelian 2-group. Nagy gave an explicit formula in the Bol case and a new global construction in the Moufang case. b) Moufang p-loops with p>3. Before, there were not many examples known for such loops. Together with M. Valsecchi, G. Nagy found some important identities for this class of loops. Using these, they gave a very general new construction and classified all Moufang loops of order p^5 for p>3. c) Jointly with P. Vojtechovsky, G. Nagy wrote a computer algebra package for loops. They used this package to classify small Moufang and Bol loops. F. Fodor found the densest packings of 13 and 14 congruent circles in a circle. Jointly with G. Ambrus, F. Fodor proved a new lower bound for the surface area of Voronoi polyhedra in 3-dimensional unit ball packings. With T. Bisztriczky and D. Oliveros, F. Fodor proved that if in a family of pairwise disjoint unit disks every 4-membered subfamily has a transversal line, then there is a line that intersects all members of the family with the possible exception of at most one. Jointly with G. Ambrus and A. Bezdek, F. Fodor showed that if in a family of n-dimensional unit balls in which the centres of the balls are at least 3.6955... apart every n^2-membered subfamily has a transversal, then the whole family has a transversal. F. Fodor co-edited a conference proceedings volume ""Discrete Geometry"" with T. Bisztriczky and W. Kuperberg
- …