Acta Polytechnica. 2014, vol. 54, no. 3

 

Zobrazují se záznamy 1-14 z 14

    • FACT — STATUS AND FIRST RESULTS 

      Autor: Dorner , Daniela; Biland , A.; Bretz , T.; Buss , J.; Einecke , S.; Eisenacher , D.; Hildebrand , D.; Knoetig L., M.; Krähenbühl , T.; Lustermann , W.; Mannheim , K.; Meier , K.; Neise , D.; Overkemping , A.-K.; Paravac , A.; Pauss , F.; Rhode , W.; Ribordy , M.; Steinbring , T.; Temme , F.; Thaele , J.; Vogler , P.; Walter , R.; Weitzel , Q.; Zänglein , M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      FACT is the first imaging Cherenkov telescope based on a camera using solid state photosensors (Geigermode Avalanche Photodiodes G-APD aka SiPM). Since October 2011, it has been taking data regularly. Apart from commissioning ...

    • STATIC TESTS OF UNCONVENTIONAL PROPULSION UNITS FOR ULTRALIGHT AIRPLANES 

      Autor: Helmich , Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper presents static tests of a new unconventional propulsion unit for small aviation airplanes. Our laboratory stand – a fan drive demonstrator – enables us to compare various design options. We performed experiments ...

    • FACT — LONGTERM MONITORING OF BRIGHT TeV BLAZARS 

      Autor: Meier , Katja; Biland , A.; Bretz , T.; Buss , J.; Dorner , D.; Einecke , S.; Eisenacher , D.; Hildebrand , D.; Knoetig L., M.; Krähenbühl , T.; Lustermann , W.; Mannheim , K.; Neise , D.; Overkemping , A.-K.; Paravac , A.; Pauss , F.; Rhode , W.; Ribordy , M.; Steinbring , T.; Temme , F.; Thaele , J.; Vogler , P.; Walter , R.; Weitzel , Q.; Zänglein , M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The First G-APD Cherenkov Telescope (FACT), located on the Canary Island of La Palma, has been taking data since October 2011. FACT has been optimized for longterm monitoring of bright TeV blazars, to study their variability ...

    • PHOTOMETRIC ANALYSIS OF PI OF THE SKY DATA 

      Autor: Opiela , Rafał; Małek , Katarzyna; Mankiewicz , Lech; Siudek , Małgorzata; Sokołowski , Marcin; Zarnecki Filip, Aleksander
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Pi of the Sky is a system of two wide field of view robotic telescopes, which search for short timescale astrophysical phenomena, especially for prompt optical GRB emissions. The system was designed for autonomous operation, ...

    • ON OBSERVATIONAL PHENOMENA RELATED TO KERR SUPERSPINARS 

      Autor: Stuchlik , Zdenek; Schee , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We investigate possible signatures of a Kerr naked singularity (superspinar) in various observational phenomena. It has been shown that Kerr naked singularities (superspinars) have to be efficiently converted to a black ...

    • OPTIMIZING THE WELDING OF PLASTICS WITH THE USE OF DIFFERENTIAL SCANNING CALORIMETRY AND THERMOGRAVIMETRIC ANALYSIS 

      Autor: Ondruška , Michal; Drienovský , Marián; Čička , Roman; Marônek , Milan; Náplava , Antonín
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Plastics have different thermal stability, depending on the structure of the polymer chains. It is therefore very important to know their thermal properties, which influence the temperature regime of processing equipment. ...

    • SEGMENTING TAGGED CARDIAC MRI DATA USING A LOCAL VARIANCE FILTER 

      Autor: Oberhuber , Tomáš; Kučera , Slavomír; Loucký , Jakub; Súkupová , Lucie; Tintěra , Jaroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We present a new method for segmenting tagged MRI data. It is based on the observation that the tagging grid vanishes almost immediately inside the ventricles because of the blood flow. Segmentation can be therefore driven ...

    • “PI OF THE SKY” OFF-LINE EXPERIMENT WITH GLORIA 

      Autor: Majcher , Ariel; Cwiek , Arkadiusz; Cwiok , Mikołaj; Mankiewicz , Lech; Zaremba , Marcin; Zarnecki F., Aleksander
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      GLORIA is the first free and open-access network of robotic telescopes in the world. Based on the Web 2.0 environment, amateur and professional users can do research in astronomy by observing with robotic telescope, and/or ...

    • LOW-MASS BINARY X-RAY SOURCES: MONITORING WITH VARIOUS SATELLITES 

      Autor: Šimon , Vojtěch
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We show the importance of observing low-mass binary (LMXB) X-ray sources with the X-ray monitors onboard satellites. This enables us to study the physical processes governing the longterm activity of LMXBs. They are excellent ...

    • STIRRED FLUIDIZED-BED DRYER OF REGENERATED ION EXCHANGER PARTICLES 

      Autor: Pěnička , Michal; Hoffman , Pavel; Fořt , Ivan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This article describes intensification of the fluidized-bed drying process for regenerated spherical-shape ion exchanger particles in the batch mode, achieved by a mechanical stirrer in the fluidized bed layer of the dried ...

    • DISTINGUISHING BETWEEN SPOT AND TORUS MODELS OF HIGH-FREQUENCY QUASIPERIODIC OSCILLATIONS 

      Autor: Karas , Vladimír; Bakala , Pavel; Török , Gabriel; Dovčiak , Michal; Wildner , Martin; Wzientek , Dalibor; Šrámková , Eva; Abramowicz , Marek; Goluchová , Kateřina; Mazur P., Grzegorz; Vincent H., Frédéric
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      In the context of high-frequency quasi-periodic oscillation (HF QPOs) we further explore the appearance of an observable signal generated by hot spots moving along quasi-elliptic trajectories close to the innermost stable ...

    • X-RAY TRANSMISSION AND REFLECTION THROUGH A COMPTON-THICK MEDIUM VIA MONTE-CARLO SIMULATIONS 

      Autor: Eikmann , Wiebke; Wilms , Jörn; Smith K., Randall; Lee C., Julia
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The spectral shape of an X-ray source strongly depends on the amount and distribution of the surrounding material. The spectrum of a primary source which is located in an optically thin medium with respect to Compton ...

    • IN-CYLINDER MASS FLOW ESTIMATION AND MANIFOLD PRESSURE DYNAMICS FOR STATE PREDICTION IN SI ENGINES 

      Autor: Sławomir , Wojnar; Rohal-Ilkiv , Boris; Šimončic , Peter; Honek , Marek; Jozef , Csambál
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The aim of this paper is to present a simple model of the intake manifold dynamics of a spark ignition (SI) engine and its possible application for estimation and control purposes. We focus on pressure dynamics, which may ...

    • A MYOELECTRIC PROSTHETIC ARM CONTROLLED BY A SENSOR-ACTUATOR LOOP 

      Autor: Kutílek , Patrik; Hýbl , Jan; Mareš , Jakub; Socha , Vladimír; Smrčka , Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper describes new methods and systems designed for application in upper extremity prostheses. An artificial upper limb with this system is a robot arm controlled by EMG signals and a set of sensors. The new multi-sensor ...