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Search Results: 1 - 10 of 297321 matches for " J. Kasperek "
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Transverse approach between real world concentrations of SO2, NO2, BTEX, aldehyde emissions and corrosion in the Grand Mare tunnel
I Ameur-Bouddabbous,J Kasperek,A Barbier,F Harel,B Hannoyer,
I. Ameur-Bouddabbous
,J. Kasperek,A. Barbier,F. Harel,B. Hannoyer

环境科学学报(英文版) , 2012,
Abstract: With regard to automotive traffic, a tunnel-type semi enclosed atmosphere is characterized by a higher concentration of gaseous pollutants than on urban traffic roads and highlights the gaseous effluent species having an impact on material degradation. Therefore, a transverse approach between air quality and its consequences upon the longevity of materials is necessary, implying better knowledge of tunnel atmosphere and a better understanding of material degradation inside a tunnel for operating administration. Gaseous pollutant measurements carried out in a road tunnel in Rouen (Normandy) give the real world traffic concentrations of experimental exposure conditions. The sampling campaigns, achieved in summer and winter include SO2, NO2, BTEX and aldehyde analyses. Effluent profiles in the upward and downward tubes have been established. The current work shows that SO2, NO2, formaldehyde, acetaldehyde, propanal and butanal must be considered in the degradation process of materials in a stuffy environment. As regards NO2, its concentration depends on the modification of the automotive fleet. The total aldehyde concentrations indicate no particular trend between the two bores. Formaldehyde, acetaldehyde, propanal, butanal and acrolein species are the most abundant species emitted by vehicles and represent 90% to 95% of the total aldehyde emissions.
Response of a Magneto-Rheological Fluid Damper Subjected to Periodic Forcing in a High Frequency Limit
Marek Borowiec,Grzegorz Litak,Rafal Kasperek
Physics , 2006,
Abstract: We explored vibrations of a single-degree of freedom oscillator with a magneto-rheological damper subjected to kinematic excitations. Using fast and slow scales decoupling procedure we derived an effective damping coefficient in the limit of high frequency excitation. Damping characteristics, as functions of velocity, change considerably especially by terminating the singular non-smoothness points. This effect was more transparent for a larger control parameter which was defined as the product of the excitation amplitude and its frequency.
Sense of coherence and coping styles among parents of adult children with schizophrenia [Poczucie koherencji i style radzenia sobie ze stresem w ród rodziców doros ych dzieci z rozpoznaniem schizofrenii]
Kasperek-Zimowska, Beata,Ch?dzyńska, Ma?gorzata
Psychiatria Polska , 2011,
Abstract: Aim. The aim of the research was an answer to the question if sense of coherence correlates with coping styles among parents looking after adult children with schizophrenia.Methods. 50 parents (38 mothers and 12 fathers) at age 46-84 (mean: 60) were examined. SOC-29 and CISS questionnaires were used to diagnose traits of sense of coherence and coping styles.Results. Coping style focused on problems was the most frequent one in the examined group. Sense of coherence and coping styles correlate among those in the investigated group.Conclusions. There is a correlation between sense of coherence and coping styles in the group of parents with adult children with schizophrenia. There is also a view of a statistical carer who is the mother aged about 60 years looking after the son aged 35 years diagnosed with schizophrenia.
FlashCam: A fully digital camera for CTA telescopes
G. Pühlhofer,C. Bauer,A. Biland,D. Florin,C. F?hr,A. Gadola,G. Hermann,C. Kalkuhl,J. Kasperek,T. Kihm,J. Koziol,A. Manalaysay,A. Marszalek,P. J. Rajda,T. Schanz,S. Steiner,U. Straumann,C. Tenzer,P. Vogler,A. Vollhardt,Q. Weitzel,K. Winiarski,K. Zietara,for the CTA consortium
Physics , 2012, DOI: 10.1063/1.4772375
Abstract: The future Cherenkov Telescope Array (CTA) will consist of several tens of telescopes of different mirror sizes. CTA will provide next generation sensitivity to very high energy photons from few tens of GeV to >100 TeV. Several focal plane instrumentation options are currently being evaluated inside the CTA consortium. In this paper, the current status of the FlashCam prototyping project is described. FlashCam is based on a fully digital camera readout concept and features a clean separation between photon detector plane and signal digitization/triggering electronics.
FlashCam: A fully digital camera for the Cherenkov Telescope Array
G. Pühlhofer,C. Bauer,F. Eisenkolb,D. Florin,C. F?hr,A. Gadola,G. Hermann,C. Kalkuhl,J. Kasperek,T. Kihm,J. Koziol,A. Manalaysay,A. Marszalek,P. J. Rajda,W. Romaszkan,M. Rupinski,T. Schanz,S. Steiner,U. Straumann,C. Tenzer,A. Vollhardt,Q. Weitzel,K. Winiarski,K. Zietara,for the CTA consortium
Physics , 2013,
Abstract: FlashCam is a Cherenkov camera development project centered around a fully digital trigger and readout scheme with smart, digital signal processing, and a "horizontal" architecture for the electromechanical implementation. The fully digital approach, based on commercial FADCs and FPGAs as key components, provides the option to easily implement different types of triggers as well as digitization and readout scenarios using identical hardware, by simply changing the firmware on the FPGAs. At the same time, a large dynamic range and high resolution of low-amplitude signals in a single readout channel per pixel is achieved using compression of high amplitude signals in the preamplifier and signal processing in the FPGA. The readout of the front-end modules into a camera server is Ethernet-based using standard Ethernet switches. In its current implementation, data transfer and backend processing rates of ~3.8 GBytes/sec have been achieved. Together with the dead-time-free front end event buffering on the FPGAs, this permits the cameras to operate at trigger rates of up to several tens of kHz. In the horizontal architecture of FlashCam, the photon detector plane (PDP), consisting of photon detectors, preamplifiers, high voltage-, control-, and monitoring systems, is a self-contained unit, which is interfaced through analogue signal transmission to the digital readout system. The horizontal integration of FlashCam is expected not only to be more cost efficient, it also allows PDPs with different types of photon detectors to be adapted to the FlashCam readout system. This paper describes the FlashCam concept, its verification process, and its implementation for a 12 m class CTA telescope with PMT-based PDP.
FlashCam: a fully-digital camera for the medium-sized telescopes of the Cherenkov Telescope Array
G. Pühlhofer,C. Bauer,S. Bernhard,M. Capasso,S. Diebold,F. Eisenkolb,D. Florin,C. F?hr,S. Funk,A. Gadola,F. Garrecht,G. Hermann,I. Jung,O. Kalekin,C. Kalkuhl,J. Kasperek,T. Kihm,R. Lahmann,A. Manalaysay,A. Marszalek,M. Pfeifer,P. J. Rajda,O. Reimer,A. Santangelo,T. Schanz,T. Schwab,S. Steiner,U. Straumann,C. Tenzer,A. Vollhardt,Q. Weitzel,F. Werner,D. Wolf,K. Zietara,for the CTA consortium
Physics , 2015,
Abstract: The FlashCam group is currently preparing photomultiplier-tube based cameras proposed for the medium-sized telescopes (MST) of the Cherenkov Telescope Array (CTA). The cameras are designed around the FlashCam readout concept which is the first fully-digital readout system for Cherenkov cameras, based on commercial FADCs and FPGAs as key components for the front-end electronics modules and a high performance camera server as back-end. This contribution describes the progress of the full-scale FlashCam camera prototype currently under construction, as well as performance results also obtained with earlier demonstrator setups. Plans towards the production and implementation of FlashCams on site are also briefly presented.
4 m Davies-Cotton telescope for the Cherenkov Telescope Array
R. Moderski,J. A. Aguilar,A. Barnacka,A. Basili,V. Boccone,L. Bogacz,F. Cadoux,A. Christov,M. Della Volpe,M. Dyrda,A. Frankowski,M. Grudzińska,M. Janiak,M. Karczewski,J. Kasperek,W. Kochański,P. Korohoda,J. Kozio?,P. Lubiński,J. Ludwin,E. Lyard,A. Marsza?ek,J. Micha?owski,T. Montaruli,J. Nicolau-Kukliński,J. Niemiec,M. Ostrowski,?. P?atos,P. J. Rajda,M. Rameez,W. Romaszkan,M. Rupiński,K. Seweryn,M. Stodulska,M. Stodulski,R. Walter,K. Winiarski,?. Wi?niewski,A. Zagdański,K. Zietara,P. Zió?kowski,P. ?ychowski,for the the CTA Consortium
Physics , 2013,
Abstract: The Cherenkov Telescope Array (CTA) is the next generation very high energy gamma-ray observatory. It will consist of three classes of telescopes, of large, medium and small sizes. The small telescopes, of 4 m diameter, will be dedicated to the observations of the highest energy gamma-rays, above several TeV. We present the technical characteristics of a single mirror, 4 m diameter, Davies-Cotton telescope for the CTA and the performance of the sub-array consisting of the telescopes of this type. The telescope will be equipped with a fully digital camera based on custom made, hexagonal Geiger-mode avalanche photodiodes. The development of cameras based on such devices is an RnD since traditionally photomultipliers are used. The photodiodes are now being characterized at various institutions of the CTA Consortium. Glass mirrors will be used, although an alternative is being considered: composite mirrors that could be adopted if they meet the project requirements. We present a design of the telescope structure, its components and results of the numerical simulations of the telescope performance.
The SST-1M camera for the Cherenkov Telescope Array
E. J. Schioppa,F. Cadoux,A. Christov,D. della Volpe,Y. Favre,M. Heller,T. Montaruli,A. Porcelli,M. Rameez,I. Troyano Pujadas,W. Bilnik,J. Blocki,L. Bogacz,T. Bulik,M. Curylo,M. Dyrda,A. Frankowski,L. Grudniki,M. Grudzinska,B. Idzkowski,M. Jamrozy,M. Janiak,J. Kasperek,K. Lalik,E. Lyard,E. Mach,D. Mandat,A. Marszalek,J. Michaowski,R. Moderski,A. Neronov,J. Niemiec,M. Ostrowski,P. Pasko,M. Pech,E. Prandini,P. Rajda,P. Schovanek,K. Seweryn,K. Skowron,V. Sliusar,M. Sowinski,L. Stawarz,M. Stodulska,M. Stodulski,S. Toscano,R. Walter,M. Wiecek,A. Zagdanski,K. Zietara,P. Zychowski
Physics , 2015,
Abstract: The prototype camera of the single-mirror Small Size Telescopes (SST-1M) proposed for the Cherenkov Telescope Array (CTA) project has been designed to be very compact and to deliver high performance over thirty years of operation. The camera is composed of an hexagonal photo-detection plane made of custom designed large area hexagonal silicon photomultipliers and a high throughput, highly configurable, fully digital readout and trigger system (DigiCam). The camera will be installed on the telescope structure at the H. Niewodnicza{\'n}ski institute of Nuclear Physics in Krakow in fall 2015. In this contribution, we review the steps that led to the development of the innovative photo-detection plane and readout electronics, and we describe the test and calibration strategy adopted.
Prototype of the SST-1M Telescope Structure for the Cherenkov Telescope Array
J. Niemiec,W. Bilnik,J. B?ocki,L. Bogacz,J. Borkowski,T . Bulik,F. Cadoux,A. Christov,M. Cury?o,D. della Volpe,M. Dyrda,Y. Favre,A. Frankowski,?. Grudnik,M. Grudzińska,M. Heller,B. Id?kowski,M. Jamrozy,M. Janiak,J. Kasperek,K. Lalik,E. Lyard,E. Mach,D. Mandat,A. Marsza?ek,J. Micha?owski,R. Moderski,T. Montaruli,A. Neronov,M. Ostrowski,P. Pa?ko,M. Pech,A. Porcelli,E. Prandini,P. Rajda,M. Rameez,E. jr. Schioppa,P. Schovanek,K. Seweryn,K. Skowron,V. Sliusar,M. Sowiński,?. Stawarz,M. Stodulska,M. Stodulski,I. Troyano Pujadas,S. Toscano,R. Walter,M. Wi?cek,A. Zagdański,K. Zi?tara,P. ?ychowski for the SST-1M sub-consortium,the CTA Consortium
Physics , 2015,
Abstract: A single-mirror small-size (SST-1M) Davies-Cotton telescope with a dish diameter of 4 m has been built by a consortium of Polish and Swiss institutions as a prototype for one of the proposed small-size telescopes for the southern observatory of the Cherenkov Telescope Array (CTA). The design represents a very simple, reliable, and cheap solution. The mechanical structure prototype with its drive system is now being tested at the Institute of Nuclear Physics PAS in Krakow. Here we present the design of the prototype and results of the performance tests of the structure and the drive and control system.
Software design for the control system for Small-Size Telescopes with single-mirror of the Cherenkov Telescope Array
A. Porcelli for the CTA Consortium,for the SST-1M sub-consortium,:,W. Bilnik,J. B?ocki,L. Bogacz,J. Borkowski,T. Bulik,F. Cadoux,A. Christov,M. Cury?o,D. della Volpe,M. Dyrda,Y. Favre,A. Frankowski,?. Grudnik,M. Grudzińska,M. Heller,B. Id?kowski,M. Jamrozy,M. Janiak,J. Kasperek,K. Lalik,E. Lyard,E. Mach,D. Mandat,A. Marsza?ek,J. Micha?owski,R. Moderski,M. Rameez,T. Montaruli,A. Neronov,J. Niemiec,M. Ostrowski,P. Pa?ko,M. Pech,A. Porcelli,E. Prandini,P. Rajda,E. jr Schioppa,P. Schovanek,K. Seweryn,K. Skowron,V. Sliusar,M. Sowiński,?. Stawarz,M. Stodulska,M. Stodulski,I. Troyano Pujadas,S. Toscano,R. Walter,M. Wi?cek,A. Zagdański,K. Zi?tara,P. Zychowski
Physics , 2015,
Abstract: The Small-Size Telescope with single-mirror (SST-1M) is a 4 m Davies-Cotton telescope and is among the proposed telescope designs for the Cherenkov Telescope Array (CTA). It is conceived to provide the high-energy ($>$ few TeV) coverage. The SST-1M contains proven technology for the telescope structure and innovative electronics and photosensors for the camera. Its design is meant to be simple, low-budget and easy-to-build industrially. Each device subsystem of an SST-1M telescope is made visible to CTA through a dedicated industrial standard server. The software is being developed in collaboration with the CTA Medium-Size Telescopes to ensure compatibility and uniformity of the array control. Early operations of the SST-1M prototype will be performed with a subset of the CTA central array control system based on the Alma Common Software (ACS). The triggered event data are time stamped, formatted and finally transmitted to the CTA data acquisition. The software system developed to control the devices of an SST-1M telescope is described, as well as the interface between the telescope abstraction to the CTA central control and the data acquisition system.
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