93 research outputs found
J. A. Schumpeter und die Innovationsforschung
Joseph Alois Schumpeter (1883-1950) zählt zu den Vätern der Innovationsforschung und Konjunkturtheorien. Seine Werke wurden von zahlreichen Wissenschaftlern zur Grundlage der Forschung genommen. Die radikalen technischen Entwicklungen des zwanzigsten Jahrhunderts, vor allem bei der Jahrtausendwende (die zu globalen Veränderungen in der Weltwirtschaft und der sozialen Verhältnisse führten) richteten das Augenmerk wissenschaftlicher Forschungen wieder Richtung Innovationen, Neuerungen, Richtung Schumpeters Theorien.
Csillagfürtfajok növényvédelme
Az ökológiai adottságokhoz igazodó agrárszerkezetben a csillagfürtöket növénytani és élettani
tulajdonságak a korszerû talajerô-gazdálkodás legperspektivikusabb növényeivé teszik. Termesztésük
a gyenge termékenységû, savanyú talajú agroökológiai körzetekben mind agrár-környezetvédelmi,
mind e térségek népességmegtartó képességének fokozása szempontjából kiemelkedô jelentôségû.
Az Ă©des csillagfĂĽrtök vetĂ©sterĂĽletĂ©nek megfelelĂ´ növelĂ©se, a környezetkĂmĂ©lĂ´ talajerĂ´-gazdálkodás
megalapozása mellett, lĂ©nyegesen enyhĂthetnĂ©k a körzetek takarmánygondjait, elĂ´segĂtve
ezzel a növénytermesztés és az állattenyésztés összhangjának megteremtését és ezen keresztül a fenntartható
mezĂ´gazdasági termelĂ©s kialakĂtását.
Tekintettel arra, hogy hazánkban mintegy 2,0–2,4 millió hektár savanyú kémhatású, gyenge termékenységû
talaj van, az édes csillagfürtök jelentôsége lényegesen nagyobb annál, mint amennyire
napjainkban elterjedt. Érdemes lenne – még külön kiemelt támogatással is – fokozni a termelési kedvet.
A haladĂł világ ugyanis egyre nagyobb figyelmet fordĂt az Ă©descsillag fĂĽrt-magra mint a gĂ©nmĂłdosĂtott
(GM) szĂłja helyettesĂtĂ©sĂ©re kiválĂłan alkalmas növĂ©nyifehĂ©rje-forrásra. Nem csak takarmánynak,
hanem a funkcionális élelmiszerek értékes alkotóelemeként is.
A közelmúltig hazánkban a csillagfürtfajok termesztése növényvédelmi szempontból nem jelentett
problĂ©mát. A gyomirtáson kĂvĂĽl sem a kĂłrokozĂłk, sem a kártevĂ´k nem lĂ©ptek fel olyan mĂ©rtĂ©kben,
hogy kémiai védekezésre szükség lett volna. Ebbôl adódik, hogy a csillagfürtfajokra alig vannak
engedélyezett növényvédô szerek (fungicidek, inszekticidek). Tapasztalataink alap ján – eseti engedély
megszerzĂ©sĂ©vel – ajánlunk kĂ©szĂtmĂ©nyeket, ezeket a 3. táblázatban kĂĽlön megjelöltĂĽk.
2004-tôl megváltozott a helyzet, amikor a fehérvirágú csillagfürtben (Lupinus albus L.) fellépett
új kórokozó gombák, a Colletotrichum gloeosporioides és a C. acutatum járványos mértéket öltve a
vetĂ©sterĂĽlet jelentĂ´s rĂ©szĂ©n a teljes növĂ©nyállományt kipusztĂtották. 2006-ban a gombák megfertĂ´ztĂ©k
a sárgavirágú (L. luteus L.) és a kékvirágú (L. angustifolius L.) csillagfürtfajokat is. A rezisztens
fajták megjelenĂ©sĂ©ig fokozott figyelmet kell fordĂtani e kĂłrokozĂłk elleni növĂ©nyvĂ©delemre
Effect of large- and small- bodied zooplankton on phytoplankton in a eutrophic oxbow
Macrozooplankton and microzooplankton effects on the phytoplankton were measured in situ in a eutrophic lake. Indigenous phytoplankton were incubated for 5 days in 301 mesocosms with either the macro- and microzooplankton (complete), microzooplankton only (micro) or no zooplankton
(none). Changes in phytoplankton biovolume were investigated. Rotifer densities became significantly
higher in the 'micro' treatment than in the 'complete' and 'none' treatments. Total algal biovolume changed little in the 'complete' and 'none' treatments, but increased significantly in the 'micro' treatment. The results suggest that macrozooplankton (Daphnia magna) suppressed it and
microzooplankton (Keratella cochlearis) enhanced it. They had opposite net effects on the phytoplankton.
Suppression of microzooplankton by Daphnia probably had an indirect negative effect on the phytoplankton
Az élsportolók egyetemi tanulmányait támogató rendszer elmúlt 11 éve Kaposváron = The past eleven years of the system of supporting top athletes in their university studies in Kaposvár
In accordance with the EU resolutions, in 2001 the City Hall of Kaposvár accepted its
conception for the short and long-term development of sports. In this they put forth a new
direction in supporting top athletes along with the University of Kaposvár, so moulding a
new type of career for top sportsmen and sportswomen. During the course of the preparatory
phase they tried to explore the possible areas of cooperation through analyses of
documents and in depth interviews. And finally in the march of 2005 the University of
Kaposvár and the City Hall signed the agreement on the reciprocal support of top athletes
in their university studies. In the initial year there were only four, but by 2016 there were
10 top athletes in the system. The program has gone through an immense change in the
past 11 years. Within the framework of a complex system of sports management, firstclass
athletes selected for the national teams such as basketball, volleyball and water-polo
players, footballers, equestrian sportsmen and sportswomen, show-jumpers, snowboarders,
kayakists, track-and-field and bowling athletes and wrestlers have been involved in a
system of sports scholarships, flexible academic and examination systems, dormitory accommodation
at a reduced price, individual use of sports facilities and language acqusition.
Now we have an independent, first-league wpmen’s volleyball team bearing the
names of both the town and the university as sponsors.
In 2015 the City Hall and the University prolonged the agreement for another five
years and increased the financial source of grants fourfold, thus broadening the possibilities of the program. The aim of the publication is to present the experience which has built up during the 11 years of the establishment and operation of this spoirts scholarship. Through presenting the results we will not fail to mention the hardships of the establishment and the singular occurrances during this period and the benefits that have emerged these days from the cooperation of the local top sports, the City Hall and the University of Kaposvár
Az élsportolók egyetemi tanulmányait támogató rendszer elmúlt 11 éve Kaposváron = The past eleven years of the system of supporting top athletes in their university studies in Kaposvár
In accordance with the EU resolutions, in 2001 the City Hall of Kaposvár accepted its
conception for the short and long-term development of sports. In this they put forth a new
direction in supporting top athletes along with the University of Kaposvár, so moulding a
new type of career for top sportsmen and sportswomen. During the course of the preparatory
phase they tried to explore the possible areas of cooperation through analyses of
documents and in depth interviews. And finally in the march of 2005 the University of
Kaposvár and the City Hall signed the agreement on the reciprocal support of top athletes
in their university studies. In the initial year there were only four, but by 2016 there were
10 top athletes in the system. The program has gone through an immense change in the
past 11 years. Within the framework of a complex system of sports management, firstclass
athletes selected for the national teams such as basketball, volleyball and water-polo
players, footballers, equestrian sportsmen and sportswomen, show-jumpers, snowboarders,
kayakists, track-and-field and bowling athletes and wrestlers have been involved in a
system of sports scholarships, flexible academic and examination systems, dormitory accommodation
at a reduced price, individual use of sports facilities and language acqusition.
Now we have an independent, first-league wpmen’s volleyball team bearing the
names of both the town and the university as sponsors.
In 2015 the City Hall and the University prolonged the agreement for another five
years and increased the financial source of grants fourfold, thus broadening the possibilities of the program. The aim of the publication is to present the experience which has built up during the 11 years of the establishment and operation of this spoirts scholarship. Through presenting the results we will not fail to mention the hardships of the establishment and the singular occurrances during this period and the benefits that have emerged these days from the cooperation of the local top sports, the City Hall and the University of Kaposvár
Assessment of the heterotrophic activity of sediment and water in the Tisza and its tributaries = A heterotróf aktivitás becslése a Tisza és mellékvizei üledékében és vizében
THERMOANALYTICAL RESEARCH CARRIED OUT AT THE INSTITUTE OF INORGANIC CHEMISTRY OF TECHNICAL UNIVERSITY OF BUDAPEST
Thermoanalytical studies have been going on at the Institute of Inorganic Chemistry
for nearly 20 years. The present paper wishes to introduce the results of three main
fields of the investigations. Primarily, the goal of our studies was the production of
complexes of transient metals with ligands containing different N-atoms and also the
study of the obtained compounds with other analytical methods. On the other hand the
thermal stability of inorganic polymers (especially the silicone-rubber and polyethylene)
was examined, ageing estimations were done, and their dependence on the method of
their production and on the pre-treatment processes modelling their possible application
circumstances were investigated. Finally, the application of thermal investigations to solve
various industrial problems was introduced, particularly in the territory of quality-tests
of materials
Diszlokáció rendszerek statisztikus tulajdonságainak vizsgálata = Investigation of the statistical properties of dislocation ensembles
A pályázat cĂ©lkitűzĂ©seinek megfelelĹ‘en diszlokáciĂłk kollektĂv tulajdonságait vizsgáltuk mint elmĂ©letileg mind kĂsĂ©rletileg. Analitikus számĂtásokkal Ă©s numerikus szimuláciĂłval vizsgáltuk a diszlokáciĂłk következtĂ©ben kialakulĂł belsĹ‘ feszĂĽltsĂ©geloszlás tulajdonságait. MegállapĂtottuk, hogy az eloszlás központi rĂ©sze Lorentz eloszlásĂş, mĂg a lecsengĹ‘ tartományban a feszĂĽltsĂ©g köbĂ©vel fordĂtottan arányos. Továbbá kimutattuk, hogy a kĂĽlsĹ‘ feszĂĽltsĂ©g hatására egy a feszĂĽltsĂ©g 4. hatványával leesĹ‘ aszimmetrikus tag jelenik meg. Megmutattuk, hogy egy 2D diszlokáciĂłrendszer relaxáciĂłja során a kĂĽlönbözĹ‘ fizikai mennyisĂ©gek az idĹ‘ hatványfĂĽggvĂ©nyekĂ©nt csengenek le. Kimutattuk, hogy a diszlokáciĂł climb bekapcsolása jĂłl definiált cellaszerkezet kialakulásához vezet.. A korábban mikroszkopikus meggondolásokkal kidolgozott diszlokáciĂł kontinuum elmĂ©letet sikerĂĽlt egy variáciĂłs elvbĹ‘l származtatni. Ez lehetĹ‘vĂ© tette az elmĂ©let általánosĂtását többszörös csĂşszásra ill. oldott atomok hatásának beĂ©pĂtĂ©sĂ©t is. Az elmĂ©let segĂtsĂ©gĂ©vel rĂ©szletesen megvizsgáltuk egy extra hozzáadott diszlokáciĂł terĂ©nek árnyĂ©kolását a többi diszlokáciĂł átrendezĹ‘dĂ©se következtĂ©ben (Debye screening) . A kĂsĂ©rleti munka során nanoindentáciĂłval Cu egykristályokon meghatároztuk a mikrokemĂ©nysĂ©g relatĂv fluktuáciĂłját. Az irodalomban elĹ‘ször megállapĂtottuk, hogy a diszlokáciĂłsűrűsĂ©ghez hasonlĂłan ez is az alkalmazott feszĂĽltsĂ©g fĂĽggvĂ©nyĂ©ben egy Ă©les maximumot mutat. | According to the proposal the collective properties of dislocations were investigated both by theoretical and experimental methods. The properties of the internal stress distribution generated by dislocations were investigated by analytical calculations and computer simulations. It was found that the central part of the distribution is Loretzian while its tail decays with the invers cube of the stress. If external stress is applied the distribution becomes asymmetric. The antisymmetric part decaying with the invers fourth power of the stress. Numerical studies show that during the relaxation of the dislocation ensemble the different macroscopic quantities decay with some power of the time. Beside this, it is obtained that the dislocation climb leads to the the formation of cell structure. The continuum theory of dislocations derived earlier from microscopic considerations was reformulated into a phase field theory. This allowed us to extend the theory to multiple slip and study the influence of solute atoms. With this framework the Debye screening of the stress field of an extra dislocation was analysed in details . The relative fluctuation of microhardness (RFM) was determined by nanoindentation performed on deformed Cu single crystals. It was found that like the fluctuation of the dislocation density the RFM alo exhibits a sharp maximum as a function of applied stress
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