Choroba P.,Experimental Center |
Van Der Hoorn L.,Experimental Center
30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016 | Year: 2016
STAM is a demand capacity balancing (DCB) procedure which allows flight management positions (FMPs) to identify pre-regulation hotspots and apply short term air traffic flow and capacity management (ATFCM) measures. It is a collaborative (CDM) process involving all partners in order to ensure that equity is maintained. The STAMs such as ground delays, flight level capping and horizontal re-routings are applied to a limited number of flights helping to avoid a considerable amount of the (sometimes unnecessary) ATFCM ground regulations and delays. This paper summarizes the results of one of the three validation exercises that were carried out in SESAR R&D program under the P13.02.03 project. It clearly highlights not only the positive feedback, but also the areas for improvement prior to wider and more harmonized use of STAM.
Fruhen L.S.,University of Aberdeen |
Mearns K.J.,University of Aberdeen |
Mearns K.J.,ConocoPhillips |
Flin R.,University of Aberdeen |
Kirwan B.,Experimental Center
Applied Ergonomics | Year: 2014
Senior managers can have a strong influence on organisational safety. But little is known about which of their personal attributes support their impact on safety. In this paper, we introduce the concept of 'safety intelligence' as related to senior managers' ability to develop and enact safety policies and explore possible characteristics related to it in two studies. Study 1 (N=76) involved direct reports to chief executive officers (CEOs) of European air traffic management (ATM) organisations, who completed a short questionnaire asking about characteristics and behaviours that are ideal for a CEO's influence on safety. Study 2 involved senior ATM managers (N=9) in various positions in interviews concerning their day-to-day work on safety. Both studies indicated six attributes of senior managers as relevant for their safety intelligence, particularly, social competence and safety knowledge, followed by motivation, problem-solving, personality and interpersonal leadership skills. These results have recently been applied in guidance for safety management practices in a White Paper published by EUROCONTROL. © 2013 Elsevier Ltd and The Ergonomics Society.
PubMed | Experimental Center, Epidemiology Unit, High Altitude Research Center, Tibet University and Prince of Songkla University
Type: | Journal: Psychology research and behavior management | Year: 2017
Parenting style experienced during childhood has profound effects on childrens futures. Scales developed in other countries have never been validated in the Tibetan context. The present study aimed to examine the construct validity and reliability of a Tibetan translation of the 23-item short form of the Egna Minnen Betrffande Uppfostran [Ones Memories of Upbringing] (s-EMBU) and to test the correlation between the parenting styles of fathers and mothers. A cross-sectional study was conducted in a sample of 847 students aged 12-21 years from Lhasa, Tibet, during September and October 2015 with a participation rate of 97.7%. The Tibetan translation of self-completed s-EMBU was administered. Confirmatory factor analysis was employed to test the scales validity on the first half of the sample and was then cross-validated with the second half of the sample. The final model consisted of six factors: three (rejection, emotional warmth, and overprotection) for each parent, equality constrained on factor loadings, factor correlations, and error variance between father and mother. Father-mother correlation coefficients ranged from 0.81 to 0.86, and the level of consistency ranged from 0.62 to 0.82. Thus, the slightly modified s-EMBU is suitable for use in the Tibetan culture where both the father and the mother have consistent parenting styles.
Stroeve S.H.,National Aerospace Laboratory Netherlands |
Sharpanskykh A.,VU University Amsterdam |
Kirwan B.,Experimental Center
Reliability Engineering and System Safety | Year: 2011
Assessment of safety culture is done predominantly by questionnaire-based studies, which tend to reveal attitudes on immaterial characteristics (values, beliefs, norms). There is a need for a better understanding of the implications of the material aspects of an organization (structures, processes, etc.) for safety culture and their interactions with the immaterial characteristics. This paper presents a new agent-based organizational modelling approach for integrated and systematic evaluation of material and immaterial characteristics of socio-technical organizations in safety culture analysis. It uniquely considers both the formal organization and the value- and belief-driven behaviour of individuals in the organization. Results are presented of a model for safety occurrence reporting at an air navigation service provider. Model predictions consistent with questionnaire-based results are achieved. A sensitivity analysis provides insight in organizational factors that strongly influence safety culture indicators. The modelling approach can be used in combination with attitude-focused safety culture research, towards an integrated evaluation of material and immaterial characteristics of socio-technical organizations. By using this approach an organization is able to gain a deeper understanding of causes of diverse problems and inefficiencies both in the formal organization and in the behaviour of organizational agents, and to systematically identify and evaluate improvement options. © 2011 Elsevier Ltd. All rights reserved.
Hagmuller M.,University of Graz |
Hering H.,Experimental Center |
Kropfl A.,Frequentis Innovations |
Kubin G.,University of Graz
European Signal Processing Conference | Year: 2015
In air traffic control the voice communication between a controller and all pilots in a delimited airspace are handled on a single VHF frequency. To identify a speaking aircraft, pilots have to start all verbal communications with the aircraft call sign. For automatic identification, it is desirable to transmit additional hidden aircraft identification data in time with this voice message over the VHF channel. That means the additional digital data has to be embedded into the speech signal. Such watermarking systems are used e.g. for CD-audio copyright protection, where copyright data is embedded into the music without any audible distortion. A system for speech watermarking in an air traffic control environment is developed. The system uses spread spectrum technology with linear prediction for spectral shaping of the watermark to achieve perceptual hiding. Error control coding is done using the BCH-code, which can both detect and correct errors. Results show that, for 12 bits/s, the watermark can be transmitted at a level which is hardly audible with very low error rate (≤ 0.1%). For the transmission of 24 and 36 bits/s the watermark level has to be increased to an audible but not annoying level so as to stay in a low error rate region. © 2004 EUSIPCO.
Wang Y.,Nanjing University of Aeronautics and Astronautics |
Wang Y.,Telecom ParisTech |
Wang Y.,French National Center for Scientific Research |
Vormer F.,Experimental Center |
And 2 more authors.
Transportation Research Part C: Emerging Technologies | Year: 2013
This paper addresses an empirical analysis of air traffic controller's activities using a human dynamics and complex systems approach. Recent studies on human dynamics show several empirical evidences that, different from common belief respecting random-based Poisson distributions, patterns of human activities fit into power law distribution with heavy tail patterns. Our hypothesis lies upon the question whether or not controller's dynamics obeys the same power law pattern. The analysis based on a 2-weeks simulation dataset is first performed to examine the interaction between traffic activities and controller's communication activities. Two widely studied complexity metrics, the Dynamic Density (DD) and the complexity based on dynamical system modeling (C-DSM) approach, have been constructed from the aircraft trajectory data. It is, however, found that neither the DD nor the C-DSM has significant influence on the controller's communication temporal behavior, except that few approach sectors show close relationships between the DD and communication. Beside this simulation dataset, three other datasets which include another simulation dataset and two operational datasets are also investigated to study the temporal characteristics of controller activities. The use of detrended fluctuation analysis (DFA) found that the inter-communication times of controller are long-rang correlated, showing a heavy tailed pattern. We show that the Inverse Gaussian distribution is better than the Power-law distribution to describe the temporal data. This indicates that the mechanism underlying controller's activities is different from the general one proposed by Barabasi (2005). The Lévy process with positive drift may be capable of explaining the adaptive behavior of the controller. © 2012 Elsevier Ltd.
Diagnosis of the Lelystad strain of Porcine reproductive and respiratory syndrome virus infection in individually housed pigs: comparison between serum and oral fluid samples for viral nucleic acid and antibody detection
Decorte I.,Operational Direction Viral Diseases |
Van Campe W.,Experimental Center |
Mostin L.,Experimental Center |
Cay A.B.,Operational Direction Viral Diseases |
De Regge N.,Operational Direction Viral Diseases
Journal of Veterinary Diagnostic Investigation | Year: 2015
There has been a developing interest in the use of oral fluid for the diagnosis of different pathogens such as Porcine reproductive and respiratory syndrome virus (PRRSV). PRRSV and PRRSV-specific antibodies have been shown to be present in oral fluid samples, but the correlation between diagnostic results in oral fluid and serum samples has been insufficiently addressed. Studies investigating this correlation focused on boars older than 6 months and type 2 strains, but it is known that the outcome of a PRRSV infection is age and strain dependent. To address this gap, the current study reports on the detection of PRRSV and PRRSV-specific antibodies in serum and oral fluid samples collected over a 6-week period after an experimental infection of 8-week-old individually housed pigs with Lelystad virus, the type 1 prototype strain. Quantitative reverse transcription polymerase chain reaction analysis showed that significantly more serum samples were PRRSV RNA–positive than oral fluid until 5 days postinfection (dpi). Between 7 and 21 dpi, PRRSV RNA detection was similar in both samples but higher detection rates in oral fluid were found from 28 dpi. Compared with existing literature, this highlights that detection rates at particular time points postinfection might vary in function of strain virulence and animal age and provides useful information for the interpretation of pen-based oral fluid results. An excellent agreement between the oral fluid and serum enzyme-linked immunosorbent assay results was observed at every time point, further supporting the usefulness of oral fluid as a diagnostic sample for antibody detection. © 2014 The Author(s).
Kirwan B.,Experimental Center
Safety Science | Year: 2011
In 2002 an incident trend in Air Traffic Management in a European Centre was analysed from a Human Factors perspective, and a single solution was developed, which stopped the incidents occurring. Three years later a new incident trend appeared, which upon analysis appeared to be a more complex version of the former pattern. This required a more comprehensive analysis as well as a more co-ordinated and systemic approach to reduction. In the end, nine recommendations were made, of which more than half were implemented. The incidents stopped. This case study is used to highlight the issue of risk migration in the context of incident analysis and reduction. © 2010 Elsevier Ltd.
Thompson T.R.,LMI |
Hullah P.,Experimental Center
AIAA AVIATION 2014 -AIAA/3AF Aircraft Noise and Emissions Reduction Symposium | Year: 2014
This work has developed an initial technique to describe climate-optimal trajectories and to allocate responsibilities to different actors contributing to their achievement. This is a step toward managing the operational process in such a way that flight-specific deviations from goals can be identified and linked to the actors best able to reduce such deviations. This technique is built upon a performance indicator that includes both CO2 and NOx, so the contribution of some non-CO2impacts is considered as part of the process1.
News Article | February 15, 2017
WARSAW, POLAND, February 14, 2017-- Henryk M. Przewlocki has been included in Marquis Who's Who. As in all Marquis Who's Who biographical volumes, individuals profiled are selected on the basis of current reference value. Factors such as position, noteworthy accomplishments, visibility, and prominence in a field are all taken into account during the selection process.With six decades of practiced research and industry experience, Dr. Przewlocki is uniquely qualified to oversee a wide range of tasks on behalf of the Institute of Electron Technology, where he has worked as an associate professor since 1979, recently as associate professor. He started out as a process engineer with the Experimental Center for Semiconductors, where he worked for one year before earning a Master of Science from the Warsaw University of Technology. Subsequently, between 1958 and 1970, Dr. Przewlocki served as a process engineer and department head at Tewa Research Center and obtained a Doctorate in Technical Sciences from his alma mater. After graduating, he garnered experience in roles such as director for science at the Science and Production Center of Semiconductors and head of the laboratory at the Institute of Electron Technology.Throughout the course of his career, Dr. Przewlocki has contributed his knowledge to works like "Processing in Semiconductor Electronics," "Electrical Measurements in Production of LSI and VLSI Integrated Circuits Production," and "Diagnostic Measurements in LSI/VLSI Integrated Circuit Production," all of which he co-authored. In light of his achievements, he has earned many accolades over the years. Notably, he was honored with the Polish National Award from the State Committee, the Distinguished Lecturer from IEEE, and the Joint U.S.-Polish Research M. Curie-Sklodowska Fund II. He has also been included in one issue of Who's Who in Finance and Industry, five volumes of Who's Who in Science and Engineering, and nine editions of Who's Who in the World. Looking ahead, Dr. Przewlocki intends to experience the continued growth and success of his career.About Marquis Who's Who :Since 1899, when A. N. Marquis printed the First Edition of Who's Who in America , Marquis Who's Who has chronicled the lives of the most accomplished individuals and innovators from every significant field of endeavor, including politics, business, medicine, law, education, art, religion and entertainment. Today, Who's Who in America remains an essential biographical source for thousands of researchers, journalists, librarians and executive search firms around the world. Marquis now publishes many Who's Who titles, including Who's Who in America , Who's Who in the World , Who's Who in American Law , Who's Who in Medicine and Healthcare , Who's Who in Science and Engineering , and Who's Who in Asia . Marquis publications may be visited at the official Marquis Who's Who website at www.marquiswhoswho.com