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1
Content available A modified HEART – 4M method with TOPSIS for analyzing indonesia collision accidents
Bowo L. P., Prilana R. E., Furusho M.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2020
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Vol. 14. no. 3
751--759
EN
Human error is recognized as the most common factor that causes maritime accidents. The human error assessment and reduction technique (HEART) is a human reliability assessment (HRA) that has been widely applied in various industries. Furthermore, the HEART – 4M method has been proposed to assess maritime accidents. The HEART – 4M method can clearly define the relationship between man, machine, media, and management factors and the human error. However, the calculation process to determine the weight of every selected error-producing condition (EPC) suffers from the uncertainty of the assessor's estimation in practical applications, which may affect the objectivity of its result. In this study, a modification of the HEART – 4M method with the technique for order preference by similarity to ideal solution (TOPSIS) is proposed. TOPSIS is a multi-criteria decision making (MCDM) tool. This study aims to develop the HEART – 4M method to make it more comprehensive and objective when assessing maritime accidents. First, the parameter of the generic task is determined as in the conventional HEART method. Second, the causal factors are converted to the suitable EPC – 4M, and there are four classification factors for the 38 standard EPCs, which are divided into man, machine, media, and management factors. Third, the TOPSIS is applied to handle the problems of interdependencies and interaction among EPC – 4M and the uncertainty that exists in the assessor´s judgment. The proportion effect of each EPC – 4M is determined through TOPSIS by considering the correlation among EPC – 4M. Finally, thirteen collision data obtained from the National Transportation and Safety Committee of Indonesia are assessed to apply the proposed method.
2
Content available Track finding with Deep Neural Networks
Kucharczyk Marcin, Wolter Marcin
Computer Science
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2019
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Vol. 20 (4)
475--491
EN
High energy physics experiments require fast and efficient methods for reconstructing the tracks of charged particles. The commonly used algorithms are sequential and the required CPU power increases rapidly with the number of tracks. Neural networks can speed up the process due to their capability of modeling complex non-linear data dependencies and finding all tracks in parallel. In this paper, we describe the application of the deep neural network for reconstructing straight tracks in a toy two-dimensional model. It is planned to apply this method to the experimental data obtained by the MUonE experiment at CERN.
3
Content available Enhanced European Coordination of Accelerator Research and Development - EuCARD² : Global and Local Impact
Romaniuk R. S.
International Journal of Electronics and Telecommunications
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2016
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Vol. 62, No. 1
97--104
EN
Wide scale, European, infrastructural research projects on accelerator science and technology are under realization since 2003. CARE project was realized during the period 2003/4-2008, and next EuCARD during 2009-2013. Now during 2014-2017 there is successfully continued EuCARD² - Enhanced European Coordination of Accelerator R&D. European accelerator R&D community prepares next continuation of the EuCARD inside the Horizon 2020. The paper presents the work developments of EuCARD. Several institutions from Poland are participating in EuCARD: NCNR in Świerk, IChTJ, technical Universites in Łódź, Wrocław and Warsaw. Realization of the project during the last 12 years gave numerable and valuable results combined with essential modernization of the European research infrastructures. From the point of view of domestic interests, where we do not have large research infrastructures, the considerable benefits are associated with the participation of young researchers from Poland - engineers and physicists, in building of the top research infrastructures. Due to such participation, high technologies are developed in several centres in the country. The EuCARD project organizes annual meetings summarizing periodically the R&D advances. The EuCARD AM2015 was held in Barcelona in April.
4
Content available Analiza niezawodności człowieka z uwzględnieniem aspektów zarządzania alarmami
Piesik E., Śliwiński M.
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
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2015
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Nr 47
143--146
PL
W artykule przedstawiono zagadnienie analizy warstwowego systemu zabezpieczeń z uwzględnieniem błędu człowieka-operatora. W analizie bezpieczeństwa funkcjonalnego systemów sterowania i zabezpieczeń istotną kwestią jest dokonanie redukcji ryzyka poprzez warstwy zabezpieczeniowo ochronne. W referacie przeanalizowano system składający się z trzech warstw: podstawowego systemu sterowania BPCS, systemu alarmowego AS oraz systemu automatyki zabezpieczeniowej SIS. W warstwowym systemie zabezpieczeniowym ważną funkcję spełnia system alarmowy, poprzez który człowiek-operator ma istotny wpływ na realizację funkcji bezpieczeństwa. Funkcje te są realizowane poprzez odpowiednie moduły w ramach systemu BPCS, lub SCADA.
EN
The paper presents the problem of layer of protection analysis with safety systems, taking into account human error probability. In the functional safety analysis control and protection systems, the important issue is to reduce risk by independent protection layer. The paper assessment system consisting of three independent protection layers: BPCS control system, alarm system AS and a safety instrumented system SIS. In the systems with protection layers an important function via the alarm system have human-operator who has a significant impact on the implementation of safety functions. The complete alarm systems consist of hardware and software for generating appropriate information, signaling and decision support in different situations dynamic process, especially in abnormal and emergency situations. These functions are carried out by the appropriate modules within the system BPCS, or SCADA. These paper presents the problem of determining the probability of human error probability HEP using the simplified plant analysis risk human reliability assessment method SPAR-H. The probability of human error is the issue related to the stage of verification of certain levels SIL.
5
Content available remote Evolutionary Algorithm for Particle Trajectory Reconstruction within Inhomogeneous Magnetic Field in the NA61/SHINE Experiment at CERN SPS
Wyszyński O.
Schedae Informaticae
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2015
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Vol. 24
159--177
EN
In this paper, a novel probabilistic tracking method is proposed. It combines two competing models: (i) a discriminative one for background classification; and (ii) a generative one as a track model. The model competition, along with a combinatorial data association, shows good signal and background noise separation. Furthermore, a stochastic and derivative-free method is used for parameter optimization by means of the Covariance Matrix Adaptation Evolutionary Strategy (CMA-ES). Finally, the applicability and performance of the particle trajectories reconstruction are shown. The algorithm is developed for NA61/SHINE data reconstruction purpose and therefore the method was tested on simulation data of the NA61/SHINE experiment.
6
Content available Metoda analizy niezawodności człowieka SPAR-H w aplikacji ProSIL-EAL
Piesik E., Barnert T., Śliwiński M.
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
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2014
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Nr 40
85--88
PL
W referacie przedstawiono zagadnienie wyznaczania prawdopodobieństwa błędu człowieka HEP za pomocą metody SPAR-H w oprogramowaniu ProSIL-EAL. Oprogramowanie wspomaga proces zarządzania bezpieczeństwem funkcjonalnym w cyklu życia systemów technicznych. Prawdopodobieństwo błędu człowieka jest zagadnieniem związanym z etapem weryfikacji określonych poziomów nienaruszalności bezpieczeństwa SIL dla funkcji bezpieczeństwa. ProSIL-EAL zapewnia wspomaganie w ocenie rozwiązań technicznych i organizacyjnych, jak również ochrony informacji, wpływu błędów systematycznych oprogramowania i błędów człowieka podczas eksploatacji systemów E/E/PE, BPCS i SIS.
EN
The paper presents the problem of determining the probability of human error HEP using the SPAR-H method in ProSIL-EAL software. This software supports the functional safety management in the life cycle of technical systems. The probability of human error is the issue related to the stage of verification of certain levels SIL for safety functions. For the human factors analysis were applied SPAR-H method for the decomposition of tasks, made by operator for two elements: action and/or diagnosis.
7
Content available Compact Muon Solenoid Decade Perspective and Local Implications
Romaniuk R. S.
International Journal of Electronics and Telecommunications
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2014
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Vol. 60, No. 1
89-94
EN
The Compact Muon Solenoid CMS is one of the major detectors of the LHC Large Hadron Collider accelerator. The second, a competitive brother, is Atlas. The accelerator complex in CERN was shut down for two years, after two years of exploitation, and will resume its work in 2015. During this break, called long shutdown LS1 a number of complex components, including electronics and photonics, will be intensely refurbished. Not only the LHC itself but also the booster components and detectors. In particular, the beam luminosity will be doubled, as well as the colliding beam energy. This means tenfold increase in the integrated luminosity over a year to 250fb⁻¹y. Discovery potential will be increased. This potential will be used for subsequent two years, with essentially no breaks, till the LS2 in 2017. The paper presents an introduction to the research area of the LHC and chosen aspects of the CMS detector modernization. The Warsaw CMS Group is involved in CMS construction, commissioning, maintenance and refurbishment, in particular for algorithms and hardware of the muon trigger. The Group consists of members form the following local research institutions, academic and governmental: IFD-UW, NCBJ- Świerk and ISE-WEITI-PW.
8
Content available TRIDAQ Systems in HEP Experiments at LHC Accelerator
Zagoździńska A., Romaniuk R. S, Poźniak K. T., Zalewski P.
International Journal of Electronics and Telecommunications
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2013
|
Vol. 59, No. 4
415-421
EN
The paper describes Trigger and Data Acquisition (TRIDAQ) systems of accelerator experiments for High Energy Physics. The background for physics research comprises assumptions of the Standard Model theory with basic extensions. On this basis, a structure of particle detector system is described, with emphasis on the following functional blocks: Front-End Electronics, Trigger and DAQ systems. The described solutions are used in the LHC experiments: ATLAS, ALICE, CMS and LHCb. They are also used in other accelerator experiments. Data storage and processing functionality is divided into two hardware systems: Trigger and Data Acquisition, that are dependent on each other. High input data rate impose relevant choices for the architecture and parameters of both systems. The key parameters include detailed system structure and its overall latency. Trigger structure is defined by the physics requirements and the storage capability of DAQ system. Both systems are designed to achieve the highest possible space and time resolution for particle detection. Trigger references are reviewed [1]–[39] as well as chosen accelerator research efforts originating in this country [40]–[83].
9
Kompaktowy Solenoid Mionowy : perspektywa dekady
Romaniuk R. S.
Elektronika : konstrukcje, technologie, zastosowania
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2013
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Vol. 54, nr 3
104-107
PL
Kompaktowy Solenoid Mionowy CMS jest jednym z głównych detektorów akceleratora LHC. Kompleks akceleratorowy w CERN został właśnie wyłączony na dwa lata, po dwóch latach eksploatacji, i zostanie ponownie uruchomiony w roku 2015. Podczas tej przerwy szereg jego elementów będzie podlegać intensywnej modernizacji. Nie tylko sam LHC, ale także elementy boostera i detektory. W szczególności zwiększona zostanie dwukrotnie jasność wiązki i energia zderzeń cząsteczkowych. Oznacza to ok. 10 krotnie większą jasność zintegrowaną, do poziomu ok. 250 lub nawet 300 fb-1/rok. Potencjał odkrywczy maszyny ulegnie znacznemu zwiększeniu. Ten potencjał będzie eksploatowany ponownie niemal bez przerwy przez dwa lata. Artykuł przedstawia wprowadzenie w tematykę badawczą akceleratora LHC oraz wybrane aspekty modernizacji detektora CMS. W budowę i modernizację CMS zaangażowana jest grupa warszawska z IFD WF UW, NCBJ oraz ISE WEiTI PW.
EN
The Compact Muon Solenoid CMS is one of the major detectors of the LHC accelerator. The second is Atlas. The accelerator complex in CERN has just be shut down for two years, after two years of exploitation, and will resume its work in 2015. During this brake, called long shutdown LS1 a number of the complex components will be intensely refurbished. Not only the LHC it-self but also the booster components and detectors. In particular, the beam luminosity will be doubled, as well as the colliding beam energy. This means tenfold increase in the integrated luminosity over a year to 250 fb-1/y. Discovery potential will be increased. This potential will be used for subsequent two years, with essentially no breaks, till the LS2. The paper presents an introduction to the research area of the LHC and chosen aspects of the CMS detector modernization. The Warsaw CMS Group is invoived in CMS construction, commissioning, maintenance and refurbishment. The Group consists of members form IFD WF UW, NCBJ and ISE WEiTI PW.
10
Content available Image Acquisition and Visualisation in DOOCS and EPICS Environments
Perek P., Wychowaniak J., Makowski D., Orlikowski M., Napieralski A.
International Journal of Microelectronics and Computer Science
|
2012
|
Vol. 3, nr 2
60-66
EN
The High Energy Physics (HEP) experiments, due to their large scale, required performance and precision, have to be controlled by complex, distributed control systems. The systems are responsible for processing thousands of signals from various sensors of different types. Very often, one of the data sources applied in such systems are visible light/infrared cameras or other imaging sensors, which provide substantial information about studied phenomena. High data throughput for camera systems require dedicated mechanisms for data collecting and processing. Moreover, the images from cameras should be also available to system operator. It needs the support from both operator panels interface and control application which should provide data in the dedicated format. The paper presents two different approaches to image distribution, processing and visualisation applied in distributed control systems. Discussed is the issue of support for cameras and image data implemented in the Distributed Object Oriented Control System (DOOCS) and an example control system designed to the needs of image acquisition system on the base of the Experimental Physics and Industrial Control System (EPICS) environment.
11
Content available The ATLAS experiment simulations as the computing challenge for the ACK CYFRONET AGH
Kaczmarska A., Malecki P., Szymocha T., Richter-Wąs E.
Computer Science
|
2008
|
Vol. 9
47-54
EN
The present High Energy Physics (HEP) experiments require unprecedented amount of computing power and storage space. We present the WLCG structure of the LHC computing, which will be used to perform data processing required by the ATLAS collaboration. We also describe the ATLAS detector full simulation chain. Finally, we quantify the computing needs and up-to-date usage of the ACK CYFRONET AGH resources by the ATLAS detector simulations.
PL
Obecne eksperymenty fizyki wysokich energii wymagają niespotykanej mocy obliczeniowej i przestrzeni do przechowywania danych. Prezentujemy strukturę WLCG obliczeń LHC, która będzie użyta do przetwarzania danych na potrzeby współpracy ATLAS. Opisujemy również pełny łańcuch symulacji detektora ATLAS. Na zakończenie, przedstawiamy potrzeby obliczeniowe i aktualne użycie zasobów ACK CYFRONET AGH przez symulacje detektora ATLAS.
12
Izolatory napowietrzne z hydrofobowej żywicy epoksydowej.
Chrzan K.L., Waters R.T.
Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
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2006
|
Vol. 44, nr 18
301-307
PL
Przedstawiono badania izolatorów wyprodukowanych z hydrofobowej żywicy epoksydowej przeprowadzone na Uniwersytecie w Cardiff i na stacji prób w Hucie Miedzi Głogów. Zbadano odporność żywicy cykloalifatycznej na skoncentrowane wyładowania powierzchniowe o prądzie upływu kilku miliamperów. Badano hydrofobowość powierzchni czystych i powierzchni słabo lub intensywnie zabrudzonej kaolinem oraz powierzchni zabrudzonej w warunkach naturalnych.
EN
The material properties and technology of hydrophobic epoxy resin were described. The insulators manufactured from this material were tested at the high voltage laboratory of Cardiff University and at the Giogow pollution test station in Poland. The clean insulators or insulators polluted by solid layer were investigated. The material was stressed by concentrated discharges having the current of few mA. The hydrophobic properties of the clean surface or light or heavy contaminated surface was checked.
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