630 research outputs found
Applications of Zigzag Persistence to Topological Data Analysis
The theory of zigzag persistence is a substantial extension of persistent
homology, and its development has enabled the investigation of several
unexplored avenues in the area of topological data analysis. In this paper, we
discuss three applications of zigzag persistence: topological bootstrapping,
parameter thresholding, and the comparison of witness complexes
A helyi szociålpolitika mƱködése = The functioning of local social policy
A kutatĂĄs sorĂĄn arra kerestĂŒk a vĂĄlaszt a törvĂ©nyi szabĂĄlyozĂĄs Ă©s helyi szociĂĄlis rendeletek elemzĂ©sĂ©vel, hogy a szabĂĄlyozĂĄs szintjĂ©n milyen tĂ©nyezĆk eredmĂ©nyeznek âjĂłâ, a tĂĄrsadalmi befogadĂĄst elĆsegĂtĆ szociĂĄlpolitikai gyakorlatokat, Ă©s milyen okokra vezethetĆ vissza a ârosszâ, kirekesztĆ gyakorlatok kialakulĂĄsa. A jogszabĂĄlyalkotĂĄs hibĂĄinak kijavĂtĂĄsa önmagĂĄban nem oldja meg az iparĂĄggĂĄ terebĂ©lyesedett segĂ©lyezĂ©si rendszer strukturĂĄlis problĂ©mĂĄit, mĂ©gis Ășgy vĂ©ljĂŒk: a segĂ©lyezĂ©s megvalĂłsulĂĄsi folyamata egy-egy elemĂ©nek rĂ©szletekbe menĆ elemzĂ©sĂ©vel közelebb juthatunk a mögöttesen megbĂșvĂł makrostrukturĂĄlis meghatĂĄrozottsĂĄgok megĂ©rtĂ©sĂ©hez. Mindezek feltĂĄrĂĄsĂĄhoz vizsgĂĄltuk, hogy helytĂĄllĂł-e a feltĂ©telezĂ©sĂŒnk, miszerint mĂĄr a törvĂ©nyi szintƱ szabĂĄlyozĂĄs megalapozza a helyi gyakorlatokban tetten Ă©rhetĆ kirekesztĆ jelensĂ©geket. Ennek Ă©rdekĂ©ben 1993-tĂłl, a szociĂĄlis törvĂ©ny megalkotĂĄsĂĄtĂłl kezdve 2007 vĂ©gĂ©ig a kĂŒlönbözĆ törvĂ©nymĂłdosĂtĂĄsok összehasonlĂtĂł elemzĂ©sĂ©vel Ărtuk le a segĂ©lyezĂ©si rendszer vĂĄltozĂĄsait. Majd 66 helyi rendelet Ă©s 25 önkormĂĄnyzati esettanulmĂĄny több szempontĂș vizsgĂĄlatĂĄval bizonyĂtottuk: ha egyes negatĂv megoldĂĄsokra lehetĆsĂ©get teremt a törvĂ©nyi szintƱ szabĂĄlyozĂĄs, akkor az önkormĂĄnyzatok egy rĂ©sze bizony Ă©l is vele. VĂ©gĂŒl a környezettanulmĂĄny, mint eszköz mƱködĂ©sĂ©t Ărtuk le egyrĂ©szt, mert ez a segĂ©lyezĂ©si rendszer mƱködĂ©sĂ©nek meghatĂĄrozĂł eleme, mĂĄsrĂ©szt, mert a kiszolgĂĄltatottsĂĄg Ă©s az intĂ©zmĂ©nyesĂŒlt önkĂ©ny szimbĂłlumĂĄnak is tekinthetĆ. | This research project intended to reveal, based on the analysis of the so called social act and some local social regulations, which factors result in âgoodâ, inclusive solutions and which practices lead to âbedâ, exclusionary outcomes. Although the correction of the contradictions of the regulations in it self would not solve the structural problems of the social assistance industry, we presumed, the detailed analysis of this element of the social assistance system could promote to understand the macro-structural determinants of the system. According to the hypothesis of the research project the jurisdiction lays the basis for the local exclusionary practices. To prove this assumption the comparative analysis of the social act was accomplished from the first version of the Act in 1993 till the end of 2007. Then it was proved by the complex analysis of 66 local social regulations and 25 case studies, if the Act creates the conditions for the exclusionary practices, a group of the local self-governments would make the âbestâ of the opportunities. Finally the functioning of the so called home visit (környezettanulmĂĄny), the symbol of the institutionalised arbitrariness was presented as a decisive instrument of the social assistance system
Determination of ignition points of liquid fuels under pressure
Two series of experiments were tried, in order to determine the ignition point at any desired pressure, the first series at constant and the second at varying pressure. The results differ greatly and indicate that testing under pressure, in the investigation of liquid fuels, can be done best in the laboratory and that the determination of the ignition points in an open vessel furnishes no certain indication of the behavior of the fuel in the engine
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