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823. Aircraft engine lubricating oil monitoring by process neural network

Creator:
Gang, Ding and Shisheng, Zhong
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Lubricating oil monitoring, process neural network (PNN), Time series prediction, aircraft engine condition monitoring, and orthogonal basis function
Language:
English
Description:
The aircraft engine lubricating oil monitoring is essential in terms of the flight safety and also for reduction of the maintenance cost. The concentration of metal elements in the lubricating oil includes a large amount of information about the health condition of the aircraft engine. By monitoring the lubricating oil, maintenance engineers can judge the performance deterioration of the aircraft engine and can find the latent mechanical faults in the aircraft engine in advance. But it is difficult for traditional methods to predict the tendency of the mental elements concentration in the lubricating oil. In this paper, a time series prediction method based on process neural network (PNN) is proposed to solve this problem. The inputs and the connection weights of the PNN are time-varied functions. A corresponding learning algorithm is developed. To simplify the learning algorithm, a set of appropriate orthogonal basis functions are introduced to expand the input functions and the connection weight functions of the PNN. The effectiveness of the proposed method is proved by the Mackey-Glass time series prediction. Finally, the proposed method is utilized to predict the Fe concentration in the aircraft engine lubricating oil monitoring, and the test results indicate that the proposed model seems to perform well and appears suitable for using as a predictive maintenance tool.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

824. Airflow limitation is accompanied by diaphragm dysfunction

Creator:
Hellebrandová, L., Chlumský, J., Vostatek, P., Novák, D., Zuzana Ryznarová, and Bunc, V.
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, bránice, diaphragm, asthma bronchiale, pulmonary function, 14, and 612
Language:
English
Description:
Chronic airflow limitation, caused by chronic obstructive pulmonary disease (COPD) or by asthma, is believed to change the shape and the position of the diaphragm due to an increase in lung volume. We have made a comparison of magnetic resonance imaging (MRI) of diaphragm in supine position with pulmonary functions, respiratory muscle function and exercise tolerance. We have studied the differences between patients with COPD, patients with asthma, and healthy subjects. Most interestingly we found the lung hyperinflation leads to the changes in diaphragmatic excursions during the breathing cycle, seen in the differences between the maxim al expiratory diaphragm position (DPex) in patients with COPD and control group (p=0.0016) . The magnitude of the diaphragmatic dysfunction was significantly related to the airflow limitation expressed by the ratio of forced expiratory volume in 1 s to slow vital capacity (FEV 1 /SVC) , (%, p=0.0007); to the lung hyperinflation expressed as the ratio of the residual volume to total lung capacity (RV/TLC), (%, p=0.0018) and the extent of tidal volume constrain expressed as maximal tidal volume (V Tmax ), ([l], p=0 .0002); and the ratio of tidal volume to slow vital capacity (VT/SVC), (p=0.0038) during submaximal exercise. These results suggest that diaphragmatic movement fails to contribute sufficiently to the change in lung volume in emphysema. Tests of respiratory muscle function were related to the position of the diaphragm in deep expiration, e.g. neuromuscular coupling (P 0.1 /VT) (p=0.0232). The results have shown that the lung volumes determine the position of the diaphragm and function of the respiratory muscles. Chronic airflow limitation seems to change the position of the diaphragm, which thereafter influences inspiratory muscle function and exercise tolerance. There is an apparent relationship between the position of the diaphragm and the pulmonary functions and exercise tolerance., L. Hellebrandová, J. Chlumský, P. Vostatek, D. Novák, Z. Rýznarová, V. Bunc., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

826. Aká logika by sa mohla požívať v práve?

Creator:
Gahér, František
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
application of norms, deontic, law, legal norms, and logic
Language:
Slovak
Description:
The paper presents a minimal extension of classical logic. The extension covers, mainly, (i) an introduction of legal regulations conceived as specific elements of provisions in legal rules; and (ii) an introduction of the application operation on legal regulations. Such an operation transforms a legal regulation into an empirical proposition describing some desired state of affairs. Moreover, it is assumed that legal arguments may contain two kinds of premises: a) legal regulations; and b) statements of empirical fact as a legal reality. A typical case of b) includes statements expressing the application or non-application of legal regulation in certain circumstances. Due to the distinctions introduced, the extended system of classical logic makes possible to analyse the logical structure of perfect norms as pentatomic. Although such a system is far remote from sophisticated systems of deontic logics, it is almost completely sufficient for lawyers’ practice., Článek prezentuje minimální rozšíření klasické logiky. Rozšíření se týká zejména (i) zavedení právních předpisů koncipovaných jako zvláštní prvky ustanovení právních předpisů; a (ii) zavedení provozu aplikaceo právních předpisech. Taková operace proměňuje právní úpravu v empirický návrh, který popisuje určitý požadovaný stav. Dále se předpokládá, že právní argumenty mohou obsahovat dva druhy prostor: a) právní předpisy; a b) vyjádření empirické skutečnosti jako právní skutečnosti. Typickým případem b) jsou prohlášení vyjadřující aplikaci nebo neuplatnění právní úpravy za určitých okolností. Díky zavedeným rozdílům umožňuje rozšířený systém klasické logiky analyzovat logickou strukturu dokonalých norem jako pentatomickou. Ačkoli takový systém je daleko od sofistikovaných systémů deontické logiky, pro praxi právníků je téměř zcela dostačující., and František Gahér
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

827. Akademická diplomacie v globální éře

Creator:
Marina Hužvárová Marina Hužvárová and Marek Hrubec
Format:
print, bez média, and svazek
Type:
article, rozhovory, interviews, model:article, and TEXT
Subject:
Politologie, mezinárodní vztahy, interdisciplinární aspekty, mezinárodní konference, international relations, interdisciplinary aspects, international conferences, Česko, Czechia, 15, and 321
Language:
Czech
Description:
The conference organized under the auspices of the Minister of Foreign Affairs of the Czech Republic Lubomír Zaorálek, was held on the 13-14th April 2016. It aimed at addresing the issues of overcoming global threats, developing inter-cultural and intra-cultural dialogue, including inter-religious and intra-religious respect and discussions, enhancing justice, mutual cooperation and stability. The conference was attended by Czech and foreign experts in social sciences and humanities, ambassadors of EU countries and Muslim states as well journalists. The theme of global threats requires an analysis and ideas for finding solutions to various cultural, social, political, religious, military and other conflicts. and Marina Hužvárová.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

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