Parlamenti mentelmi jog és az emberi jogok

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Communication Time Estimation in High Level Synthesis

The high level synthesis (HLS) tools may result in a multiprocessing structure, where the time demand of the interchip data transfer (briefly the communication) between the processing units (hardware or software) is determined exactly only after the task-allocation. However, a realistic preliminary estimation of the communication time would help to shape the scheduling and the allocation procedures just for attempting to minimize the communication times in the final structure. Compared to the task-execution times of the processing units, especially significant communication times are required by the serial communication interfaces which are frequently used in microcontroller systems. This paper presents an estimation method by analysing four well-known serial communication interfaces (SPI, CAN, I2C, UART)

A test on the effectiveness and selectivity of three sampling methods frequently used in orthopterological field studies

To obtain unbiased data in entomological samplings the selectivity and effectiveness of methods should be known. Sweepnetting, direct search and dish trap, which are frequently used in orthopterology, were tested to get data on selectivity and effectiveness. Based on the number of collected individuals, sweepnetting was the most labour efficient, while the highest number of species was collected by direct search. Dish traps were most selective to ground-dwelling species. Sweepnetting and direct search were sensitive to grass-dwelling species. Our results underlines that none of the methods is universal, and a combination of sweepnetting and direct search provides the greatest benefits

Az anyag attoszekundumos dinamikája ultraintenzív lézerterekben optikai cikluson belülii időbeli és hullámhosszon belüli, nanométeres térbeli tartományokban = Attosecond dynamics of matter in ultra-high laser fields with sub-cycle temporal and sub-wavelength, nanometer-scale spatial resolution

Bebizonyítottuk, hogy az elektronok intenzív kvantált sugárzási térrel való kölcsönhatása fotonszám-fázis minimális bizonytalanságú, különleges statisztikájú fotonállapotok kialakulását eredményezi. Elemeztük a foton-elektron összefonódást, a Hanbury Brown és Twiss (HBT) típusú korrelációk extrém (attoszekundumos) fényjelek diagnosztikájában való alkalmazhatóságát, és általunk bevezetett „attoszekundumos sörétzaj” szerepét. A felületeken (pl. vékony fémrétegen, plazmarétegen és grafénen) lejátszódó intenzív lézer-anyag kölcsönhatásoknál elemeztük az ún. vivő-burkoló fázis szerepét különböző nemlineáris folyamatokban. Kifejlesztettük az elektronok kétdimenziós kinematikájának Wigner-függvényes leírását. Az ultrarövid fényimpulzusok grafénen történő szóródásának elemzése során általunk előrejelzett „relativisztikus levágás” optikai négyszögimpulzusok generálását teheti lehetővé. Kísérletileg észleltük és elméletileg értelmeztük felületi plazmonok térerősítését, s az evaneszcens terek nemlineáris optikai hatásait (felharmonikus-keltés, sokfotonos elektron emisszió és gyorsítás), és demonstráltuk, hogy az elektronok 2-3 femtoszekundumos csomagokban hagyják el a fémfelületet, az intenzitás-bulkolót követve. A plasmon-bomláskor (kollektív fékezési sugárzásakor) keletkező ultrarövid fényjelek nemklasszikus HBT-korrelációját, és a fotoncsomósodásból a ritkulásba való átmenetet elsőként mutattuk ki és értelmeztük az általunk kidolgozott elmélet alapján. | We analysed entanglement in the interaction of electrons with a strong quantized radiation field, which leads to the generation of number-phase minimum uncertainty states. On the basis of these results we introduced the concept of ""attosecond shot-noise"" and shown how the Hanbury Brown and Twiss (HBT) type correlations can be used for probing extreme light signals. We developed the Wigner function description of the kinematics of electrons in two-dimensional geometry. We studied in details the role of carrier-envelope phase difference effects in strong field laser- matter interactions at surfaces (thin metal or plasma layers and graphene). We predicted the new phenomena of ""relativistic clipping"" appearing in the scattering of ultrasort pulses on graphene, which may lead to rectangular optical pulses. We have observed experimentally and described theoretically that in surface plasmon enhanced evanescent electric fields, strong-field optics effects exist (high-harmonic generation, nonlinear electron emission and acceleration). These are characteristic for surface plasmon physics, they otherwise occur only in fields, higher than those produced by our exciting laser. We demonstrated that the electrons leave the surface in 2-3 fs-long bunches, following the intensity envelope of the surface plasmons. We measured and theoretically interpreted for the first time HBT type correlations in decaying surface plasmon light, and found the transition from antibunching to bunching

Application of the rough set data analysis for the development of the control structure of an FCC unit

The rough set data analysis (RSDA) is widely used for the determination of non-linear relationships in many different areas. In this paper it is applied to investigate the dependencies among the variables in fluid catalytic cracking unit (FCC) consisting of reactor and regenerator parts. The analysis has been performed to understand FFC behaviour and to develop its control structure. About 140 operating points of an industrial FCC unit are considered and analysed using the rough set methodology. The ROSETTA toolkit is applied to discover the dependencies among the controlled and the manipulated variables. It is determined that the temperature of the regenerated catalyst has a significant influence on the product quality (motor octane number) and it should be controlled. A new control loop is designed and its controlled variable is the temperature in the regenerator unit. To avoid afterburning in the regenerator part of the FCC unit, several temperature measurements are recommended with the use of a special control unit, a high selector (HS).The manipulated variable of the new control loop is the feed flow of the bottom product of the main distillation column (BMC) in the reactor part of the FCC unit