Design of the dual constellation GPS/Galileo mobile device for improving navigation of the visually impaired in an urban area

• Autorzy: Drypczewski K. , Moszynski M. , Demkowicz J. , Bikonis K. , Stepnowski A.
• Języki publikacji: EN

Abstrakty

EN

The article discusses damages of essential tribological associations in crankshaft and piston systems of large power two-stroke engines used as main engines, which take place during transport tasks performed by those ships. Difficulties are named which make preventing those damages impossible, despite the fact that the technical state of engines of this type is identified with the aid of complex diagnostic systems making use of advanced computer technology. It is demonstrated that one of causes of the damages is the lack of research activities oriented on recognising random properties of the loads leading to those damages. A proposal is made for the loads acting at a given time t on tribological associations in crankshaft and piston systems of internal combustion engines used as main engines to be considered as random variables Qt. At the same time the loads examined within a given time interval tr ≤ t ≤ tz would be considered stochastic processes {Q(t): t ≥ 0}. Essential properties of the loads of the abovementioned tribological associations are named and explained by formulating hypotheses which need empirical verification. Interval estimation is proposed for estimating the expected value E(Qt) of the load Qt acting at time t. A relation is indicated between the mechanical load and the thermal load acting on tribological associations in the ship main engine crankshaft and piston system. A suggestion is formulated that a stochastic form of the relation between these types of load is to be searched for, rather than statistic relation, and a proposal is made to measure the intensity (strength) of the stochastic relation using the Czuprow’s convergence coefficient

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2015
• Tom: 22
• Numer: 4
• Opis fizyczny: p.15-20,fig.,ref.

Twórcy

autor

Drypczewski K.

• Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland

autor

Moszynski M.

• Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland

autor

Demkowicz J.

• Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland

autor

Bikonis K.

• Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland

autor

Stepnowski A.

• Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland

Bibliografia

• 1. L. Xi, Q. Liu, M. Li, Z. Li, Map Matching Algorithm and Its Application, Advances in Intelligent Systems Research, 2007.
• 2. N. Tradišauskas, D. Tiešytė, C.S. Jensen, A Study of Map Matching for GPS Positioned Mobile Objects, 7th WIM Meeting, 2004.
• 3. S. Taghipour, M.R. Meybodi, A. Taghipour, An Algorithm for Map Matching For Car Navigation System, Information and Communication Technologies: From Theory to Applications, 1-5, 2008.
• 4. K. Bikonis, J. Demkowicz, Data Integration from GPS and Inertial Navigation Systems for Pedestrians in Urban Area, International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 7, No. 3, pp. 401-406, 2013.
• 5. Ł. Kamiński, A. Stepnowski, Ł. Markiewicz, Voice Maps - system supporting navigation of the blind, Hydroacoustics, Vol. 15, pp. 83-90, 2012.
• 6. A. Stepnowski, Ł. Kamiński, J. Demkowicz, Voice Maps - the system for navigation of blind in urban area, Proceedings of the 10th WSEAS international conference on Applied computer and applied computational science, 7-9.03.2011, Venezia, Italy, 2011.
• 7. L. Yang , Z. Ke, L. Tan , L. Jiabin, The Research On RealTime Map-Matching Algorithm, Proceedings of the International Conference on Industrial Control and Electronics Engineering (ICICEE), Xi’an, China, 2012.
• 8. Y. Yuan, W. Guan, W. Qiu, Map Matching of Mobile Probes based on Handover Location Technology, Proceedings of the International Conference on Networking, Sensing and Control (ICNSC), Chicago, USA, 2010.
• 9. J. Meguro, T. Murata, J. Takiguchi, Y. Amano, T. Hashizume, GPS Multipath Mitigation for Urban Area Using Omnidirectional Infrared Camera, IEEE Transactions on Intelligent Transportation Systems, Vol. 10, Issue 1, pp. 22-30, 2009.
• 10. S. Bauer, M. Obst, G. Wanielik, 3D Environment Modeling for GPS Multipath Detection in Urban Areas, Proceedings of the 9th International Multi-Conference on Systems, Signals and Devices (SSD), Chemnitz, Germany, 2010.
• 11. Wiśniewski B., Drypczewski K., Markiewicz Ł., Kamiński Ł.:Methods of navigation in the mobile application supporting movement of the blind// In: HYDROACOUSTICS.-Vol. 16 (2013),s.243-252
• 12. Drypczewski K., Kamiński Ł., Markiewicz Ł., Wiśniewski B., Stepnowski A.:Remote Spatial Database Access in the Navigation System for the Blind// In: Marine Navigation and Safety of Sea Transportation: Navigational Problems.-, (2013),s.217-221
• 13. Markiewicz Ł., Drypczewski K., Wiśniewski B., Kamiński Ł.: Client-server Approach in the Navigation System for the Blind. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 7 No. 3 ISSN 2083-6473 (e-ISSN 2083-6481).
• 14. Markiewicz Ł., Drypczewski K., Wiśniewski B., Bieliński T.:Application development for Android, iOS and BlackBerry mobile platforms// In Proc. ICT YOUNG 2013/.Gdańsk:Faculty of Electronics, Telecommunications and Informatics, Gdańsk University of Technology,2013,s.51-56

Identyfikatory

DOI

10.1515/pomr-2015-0065