358 research outputs found
Részvétel A Magyarországi Középkori Latinság Szótára 6. kötetének szerkesztésében = Participation in the Editing of the Lexicon of Mediaeval Latin of Hungary
Pályázatom cĂ©lja az MTA Ă“kortudományi KutatĂłcsoportjában kĂ©szĂĽlĹ‘, ''A magyarországi közĂ©pkori latinság szĂłtárának'' munkálataiban valĂł rĂ©szvĂ©tel volt. Az összegyűjtött cĂ©dulaanyag egy rĂ©szĂ©t lexikográfiailag Ă©rtĂ©keltem, Ă©rtelmeztem, a kĂĽlönbözĹ‘ idĹ‘szakokban, kĂĽlönbözĹ‘ kutatĂłk által olykor eltĂ©rĹ‘ koncepciĂłval egybegyűjtött anyagot összesĂtettem, majd az ily mĂłdon egyesĂtett cĂ©dulákat az ''R'' betűig abc rendbe rakva elĹ‘segĂtettem a következĹ‘ kötetek munkálatait. Az idĹ‘közben felmerĂĽlĹ‘ hiányosságok pĂłtlásához Gregorius Gyöngyösi: Vitae c. műve kritikai kiadásának feldolgozásával, szĂłanyagának kicĂ©dulázásával járultam hozzá, amely ritka vagy egyedi jelentĂ©sben használt szavaival Ă©rtĂ©kes forrásnak bizonyult. Az aktuálisan kĂ©szĂĽlĹ‘ ''M'' betűs kötetbĹ‘l elvĂ©geztem a ''mediatrix'' fĹ‘nĂ©vtĹ‘l a ''memor'' fĹ‘nĂ©vig terjedĹ‘ szĂłanyag feldolgozását, a már betűrendbe szedett cĂ©dulákat jelentĂ©stani kategĂłriák szerint csoportosĂtva, adataikat kronolĂłgiai sorrendbe tĂ©ve Ă©s Ă©rtelmezve, a cĂ©dulákon szereplĹ‘ adatokat az eredeti forrásokkal összevetve. VĂ©gĂĽl az ily mĂłdon rendezett anyagot számĂtĂłgĂ©pes formátumban rögzĂtettem, az elkĂ©szĂĽlt szĂłcikkek rögzĂtĂ©sĂ©nĂ©l a korábbi koncepciĂłt követve, valamint gyakorlati javaslatokat tĂ©ve esetleges további technikai fejlesztĂ©sekre is. Munkámmal hozzájárultam a magyarországi közĂ©pkori latin nyelvhasználat Ă©rtĂ©kes adatbázisának lĂ©trehozásához, segĂtve ezzel a rokon Ă©s társtudományok kutatĂłit is. | The purpose of the project was to participate in the work of the Dictionary of the Medieval Latin of Hungary in the Ă“kortudományi KutatĂłcsoport of MTA. The collected labels were lexicographywise evaluated and interpreted. I pooled the material aggregated at different times, by different researchers and sometimes according to different concepts. Afterwards I put the labels in alphabetic order up to ""r"", and promoted the work of the next volumes. The weaknesses emerging in the meantime were compensated by the annotation of the words of the critical edition of Gregorius Gyöngyösi: Vitae's, whose rare or unique words used in the report proved to be a valuable source. I processed the words from the noun 'mediatrix' to the noun 'memor' for the M-letter volume. Finally, I recorded this material in a systematic way in computer readable form, following the earlier concept. I proposed some additional technical developments too. My work contributed to the creation of a valuable database of the Hungarian medieval Latin language, helping the similar disciplines's researchers as well
Construction of multiple trade-offs to obtain arbitrary singularities of adaptive dynamics
Evolutionary singularities are central to the adaptive dynamics of evolving traits. The evolutionary singularities are strongly affected by the shape of any trade-off functions a model assumes, yet the trade-off functions are often chosen in an ad hoc manner, which may unjustifiably constrain the evolutionary dynamics exhibited by the model. To avoid this problem, critical function analysis has been used to find a trade-off function that yields a certain evolutionary singularity such as an evolutionary branching point. Here I extend this method to multiple trade-offs parameterized with a scalar strategy. I show that the trade-off functions can be chosen such that an arbitrary point in the viability domain of the trait space is a singularity of an arbitrary type, provided (next to certain non-degeneracy conditions) that the model has at least two environmental feedback variables and at least as many trade-offs as feedback variables. The proof is constructive, i.e., it provides an algorithm to find trade-off functions that yield the desired singularity. I illustrate the construction of trade-offs with an example where the virulence of a pathogen evolves in a small ecosystem of a host, its pathogen, a predator that attacks the host and an alternative prey of the predator.Peer reviewe
Evolutionary suicide through a non-catastrophic bifurcation : adaptive dynamics of pathogens with frequency-dependent transmission
Evolutionary suicide is a riveting phenomenon in which adaptive evolution drives a viable population to extinction. Gyllenberg and Parvinen (Bull Math Biol 63(5):981-993, 2001) showed that, in a wide class of deterministic population models, a discontinuous transition to extinction is a necessary condition for evolutionary suicide. An implicit assumption of their proof is that the invasion fitness of a rare strategy is well-defined also in the extinction state of the population. Epidemic models with frequency-dependent incidence, which are often used to model the spread of sexually transmitted infections or the dynamics of infectious diseases within herds, violate this assumption. In these models, evolutionary suicide can occur through a non-catastrophic bifurcation whereby pathogen adaptation leads to a continuous decline of host (and consequently pathogen) population size to zero. Evolutionary suicide of pathogens with frequency-dependent transmission can occur in two ways, with pathogen strains evolving either higher or lower virulence.Peer reviewe
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