40 research outputs found
Van Tién Dung. Dai Thang Mua Xuân. La grande victoire du printemps 1975 -. Et nous prîmes Saïgon Hoang Minh Thao. Chiên Dich Tây Nguyên Dai Thang. La grande victoire des Hauts-Plateaux Trân Van Tra. Kêt Thuc Cuôc Chiên Tranh 30 Nam. La conclusion d'une guerre de trente ans
No full textBui Xuan Quang. Van Tién Dung. Dai Thang Mua Xuân. La grande victoire du printemps 1975 -. Et nous prîmes Saïgon Hoang Minh Thao. Chiên Dich Tây Nguyên Dai Thang. La grande victoire des Hauts-Plateaux Trân Van Tra. Kêt Thuc Cuôc Chiên Tranh 30 Nam. La conclusion d'une guerre de trente ans. In: Politique étrangère, n°4 - 1983 - 48ᵉannée. pp. 1038-1039
Van Tién Dung. Dai Thang Mua Xuân. La grande victoire du printemps 1975 -. Et nous prîmes Saïgon Hoang Minh Thao. Chiên Dich Tây Nguyên Dai Thang. La grande victoire des Hauts-Plateaux Trân Van Tra. Kêt Thuc Cuôc Chiên Tranh 30 Nam. La conclusion d'une guerre de trente ans
No full textBui Xuan Quang. Van Tién Dung. Dai Thang Mua Xuân. La grande victoire du printemps 1975 -. Et nous prîmes Saïgon Hoang Minh Thao. Chiên Dich Tây Nguyên Dai Thang. La grande victoire des Hauts-Plateaux Trân Van Tra. Kêt Thuc Cuôc Chiên Tranh 30 Nam. La conclusion d'une guerre de trente ans. In: Politique étrangère, n°4 - 1983 - 48ᵉannée. pp. 1038-1039
Csalás elleni szabályok a hitellevél törvényben: A nemzetközi szabályozás és a nemzeti törvény elemzése kiegészítő javaslatokkal Vietnám számára
No full textJelen dolgozat röviden bemutatja a hitellevél egyedi hasznosságát, különös tekintettel a kereskedelmi hitellevélre, és felhívja a figyelmet a hitellevél rendszerében tapasztalható hiányosságokra, így a csalásra és az ilyen területek szabályozásának igazságtalanságára Vietnámban. A dolgozat leírja a kereskedelmi hitellevéllel való tranzakciók során a felek jogait és kötelezettségeit, valamint a hitellevél alapvető szabályait. Az értekezés bemutatja az erkölcstelen felek által okozott, dokumentumokkal történő félrevezető gyakorlatokat, amelyek kifizetéseket tesznek lehetővé kötelezettségeik teljesítése nélkül. Ezek a csalárd tevékenységek olyan körülményeket tükröznek, amelyek veszélyeztetik a dokumentumokon alapuló hitelrendszer stabilitását.
Ezenkívül a disszertáció elemzi az ilyen csalárd tevékenységekkel foglalkozó hivatalos szabályozásokat néhány konkrét országban, valamint adott államok bíróságainak álláspontját. A dolgozat megvizsgálja a csalás szabályozásának hatását és integrálását a hozzáadott érték láncokba. Nemzetközi szabályozások mellett a szerző a nemzeti egységesítő rendszerekre is fókuszál, amelyek a csalás szabályozását tartalmazzák. Például az Egyesült Államokban érvényes, csalásra vonatkozó szabályokat, mint a Közös Kereskedelmi Kódex, szintén bemutatja a dolgozat. Emellett megvizsgálja a Kínai Népköztársaság csalást érintő szabályozását és a vonatkozó jogeseteket. Ezután a disszertáció ismerteti Vietnam mostani gazdasági helyzetét a kereskedelmi hitellevél alkalmazása tekintetében, ideértve a jelenlegi szabályozásokat és legutóbbi jogi döntéseket. Az írás rámutat ezen jogterület hiányosságaira Vietnam-ban, a legújabb döntések és a vietnami jogesetek bemutatásán keresztül. Ezek a jogesetek a vietnami bíróságok álláspontját fogják tükrözni a hitellevéllel történő csalásokkal, valamint a felek jogaival és kötelezettségeivel kapcsolatban. Ezután a szerző megkísérel ajánlásokat tenni a jelenlegi helyzet alapján Vietnámban.
This thesis intends to briefly introduce the unique utility of letters of credit, which specifically focus on commercial letters of credit, and introduce the inadequacies in the system of letters of credit concentrating on fraudulent activities and presenting the shortage of justice in regulating such areas in Vietnam. The rights and obligations of parties in the transactions of commercial letters of credit will be described in this thesis as well as the cornerstone rules of letters of credit. The thesis will exhibit the exercise of unscrupulous parties misleading documents and obtaining payments without performing duties. Such fraudulent activities illustrate circumstances that jeopardize the stability of the documentary credit system.
This dissertation also emphasizes the official regulations dealing with such fraudulent activities in some specific countries as well as the opinions of their courts. The thesis will explore the impact of fraud rules and their integration into value chains. Besides international regulations, the author shall focus on the national uniforms regulating fraud rules. For example, the United States regulations regarding fraud rules which is the Uniform Commerce Code will be embodied in this thesis. Furthermore, this thesis also illustrates and examines the regulations and case law of the People’s Republic of China relating to fraud rules. The dissertation then shall further mention the recent economic situation of Vietnam regarding the application of commercial letters of credit, including the current regulations and the recent legal judgments. The lack of law in this field in Vietnam is also expressed through this study by presenting the recent decisions and the Vietnam case law. This case law shall perform the point of view of the Vietnam People’s Courts toward fraud in letters of credit as well as the right and duties of parties. Then, the author shall try to give recommendations based on the current situation in Vietnam
Seismic activity characteristics in the East Sea area
No full textIn this paper, seismic activity characteristics in the East Sea area was analyzed by authors on the base of the unified earthquake catalog (1900-2017), including 131505 events with magnitude 3 ≤ Mw ≤ 8.4. The seismic intensity in the East Sea during the period 1900-2017 is characterized by the earthquake representative level Mw = 4.7. The strong earthquake activity in the East Sea area clearly shows the regularity in each stage. In the period from 1900 to 2017, the East Sea area has four periods of strong earthquake activity, each stage is nearly 30 years with particular characteristics. The distribution of the maximum earthquake quantities by years has a cyclicity in all four periods. In each stage there are 1-2 strong earthquakes with Mmax ≥ 8.0. The strong earthquakes with Mmax ≥ 7.5 have occurred by a repeatable rule of 3-5 years in all four stages. This allows the prediction of the maximum earthquake repeat cycle of Mmax ≥ 7.5 in the study area is 3-5 years. In other hand, the maximum magnitude values for the East Sea region has assessed by GEV method with several different predict periods (20, 40, 60, 80, 100 years), with predicted probability 80%. We concluded that it is possible that earthquake have Mmax = 8.7 will occur in next 100 years.ReferencesBautista C.B., Bautista M.L.P., Oike K., Wu F.T., Punongbayan R.S., 2001. A new insight on the geometry of subducting slabs in northern Luzon, Philippines. Tectonophysics, 339, 279-310.Bui Cong Que, et al., 2010. Seismic and tsunamis hazard in coastal Viet Nam. Natural Science and Technology Publishing House, 311p.Bui Van Duan, Nguyen Cong Thang, Nguyen Van Vuong, Pham Dinh Nguyen, 2013. The magnitude of the largest possible earthquake in the Muong La-Bac Yen fault zone. J. Sci. of the Earth, 35, 53-59 (in Vietnamese).Cao Dinh Trieu, Pham Nam Hung, 2008. Deep-seated fault zone presents the risk of strong earthquakes in the East and South Vietnam Sea. Scientific Report of the First National Conference on Marine Geology, Ha Long, October, 9-10, 491-497.Hsu Ya-Ju, Yu Shui Ben, Song Teh.-Ru Alex, Bacolcol Teresito, 2012. Plate coupling along the Manila subduction zone between Taiwan and northern Luzon. J. Asian Earth Sci., 51, 98-108.http://www.ioc-tsunami.org/index.php?option=com_oe&task=viewDocumentRecord&docID=16478.http://www.jcomm.info/index.php?option=com_oevàtask=viewDocumentRecordvafdocID=16484.Kirby S., Geist E., Lee W.H., Scholl D., Blakely, R., October 2005. 660 Tsunami source characterization for western Pacific subduction 661 zones: a perliminary report. Report, USGS Tsunami Subduction 662 Source Working Group.Le Duc Anh, Nguyen Hoang., Shakirov RB., Tran T.H., 2017. Geochemistry of late miocene-pleistocene basalts in the Phu Quy island area (East Vietnam Sea): Implication for mantle source feature and melt generation, Vietnam J. Earth Sci., 39, 270-288.Le Huy Minh, Frederic Masson, Alain Bourdiilon, Patrick Lassudrie Duchesne, Rolland Fleury, Jyr-ching Hu, Vu Tuan Hung, Le Truong Thanh, Nguyen Chien Thang, Nguyen Ha Thanh, 2014. GPS data continuously in Vietnam and Southeast Asia. J. Sci. of the Earth, 36, 1-13.Le Van De, 1986. Outline of tectonics of the East Vietnam sea and adjacent areas. Proc. 1st Conf. Geol. Indoch., Ho Chi Minh City, 397-404, Hanoi.Ngo T.L., Tran V.P., 2013. Development of a new algorithm for the separation of seismic and anemone groups from the earthquake list to ensure the independence of events. Journal of Marine Science and Technology, Hanoi, 13(3A), 79-85.Nguyen Dinh Xuyen., et al., 2007. Report on the implementation of the task "Earthquake scenarios for tsunamis in the South China Sea". Institute of Meteorology and Hydrology.Nguyen Hong Phuong, 2015. Estimation of seismic hazard parameters for potential tsunami genic sources in the South China Sea region.Nguyen Hong Phuong, 2001. Probabilistic Seismic Hazard Assessment Along the Southeastern Coast of Vietnam, Natural Hazards, 24, 53-74.Nguyen Hong Phuong, 2004. Earthquake risk map of Vietnam and East Sea. J. Sci. of the Earth, 26, 97-111.Nguyen Hong Phuong, Bui Cong Que, 2012. Investigation of earthquake tsunami sources, capable of affecting Vietnamese coast, Nat Hazards, 64, 311-327.Nguyen Hong Phuong, Pham The Truyen, 2014. Probabilistic Seismic Hazard Assessment for the South Central Vietnam. J. Sci. of the Earth, 36, 451-461.Nguyen Hong Phuong, Pham The Truyen, Nguyen Ta Nam, 2017. Probabilistic Seismic Hazard Assessment for the Tranh River hydropower plant No2 site, Quang nam province, Vietnam J. Earth Sci., 38(2), 188-201.Nguyen Van Luong, Bui Cong Que, Nguyen Van Duong, 2008. Tectonic stresses and modern movements in the crust of the Earth in the East Sea area, Journal of Marine Science and Technology, 46-52.Nguyen Van Luong, Duong Quoc Hung, Bui Thi Thanh and Tong Duy Cuong, 2003. Characteristics of fault systems in the East Sea area. J. Sci. of the Earth., 25, 1-8 (in Vietnamese).Nguyen Van Luong, et al., 2002. Result of establishment of the list of earthquake dynamics in the East Sea area, studies on geology and marine geophysics, VII, Hanoi.Nguyen Van Luong, et al., 2008. Tectonic seismic and geodynamic features of the South China Sea, Proceedings of the 1st National Conference on Marine Geology and Sustainable Development, 9-10, Ha Long, 498-509.Pham Van Thuc and Nguyen Thi Kim Thanh, 2004. Earthquake zone in the South China Sea and coastal areas. Journal of Geology, A series, 285, 11-12.Pham Van Thuc, 2001, Characteristics of tsunamis in the East Sea region of Vietnam. TC and CNN, TI, 2, 52-64.Phan Trong Trinh, Ngo Van Liem, Vy Quoc Hai, John Beavan, Nguyen Van Huong, Hoang Quang Vinh, Bui Van Thom, Nguyen Quang Xuyen, Nguyen Dang Tuc, Dinh Van Thuan, Nguyen Trong Tan, Nguyen Viet Thuan, Le Huy Minh, Bui Thi Thao. Nguyen Huy Thinh, Dinh Van The, Le Minh Tung, Tran Quoc Hung, Nguyen Viet Tien, 2010b. Modern tectonic movement in the East Sea and surrounding areas. Journal of Geology. Series A, 320, 9-10, Hanoi.Phan Trong Trinh, 2006. The Tsunami and December 26, 2004 in the Indian Ocean: A Warning to Vietnam. Journal of Geology, Series A, 293, Hanoi.Phan Trong Trinh, et al., 2010a. Research on the tectonic activity, modern tectonics and geodynamics of the South China Sea as a scientific basis for forecasting the types of catastrophe involved and proposed solutions prevent. KC.09.11/06-10. Institute of Geology, 446p.Phan Trong Trinh, Nguyen Van Huong, Ngo Van Liem, Tran Dinh To, Vy Quoc Hai, Hoang Quang Vinh, Bui Van Thom, Nguyen Quang Xuyen, Nguyen Viet Thuan, Bui Thi Thao, 2011. Geological and geological hazards in Vietnam's sea and nearby. J. Sci. of the Earth, 33, 443-456.Pisarenko V.F., Sornette A., Sornette D. and Rodkin M.V, 2008. New approach to the Characterization of Mmax and of the Tail of the Distribution of Earthquake Magnitudes. Pure and Applied Geophysics, 165, 847-888.Pisarenko V.F, Sornette D. and Rodkin M.V., 2010. Distribution of maximum Earthquake magnitudes in future time intervals: application to the seismicity of Japan (1923-2007). EPS (Earth, Planets and Space), 62, 567-578.Pisarenko V.F., Rodkin M.V, and Rukavishnikova T.A., 2014. Estimation of the Probability of Strongest Seismic Disasters Based on the Extreme Value Theory. Physics of the Solid Earth, 50(3), 311-324.Pisarenko V.F., Rodkin M.V. and et al., 2012. New general quantile approach to the seismic rick assessment application to the Vietnam region. //Proceedings of the International Conference on "Geophysics - Cooperation and Sustainable Development." Science and Technology Publishing House. Hanoi, 161-167.Vu Thanh Ca, 2008. Report on the project to build a map of tsunami warning for coastal areas of Vietnam. Institute of Hydrometeorology and Environment - Ministry of Natural Resources and Environment.Yingchun Liu, Angela Santos, Shuo M. Wang, Yaolin Sh, Hailing Liu, David A. Yuen, 2007. Tsunami hazards along Chinese coast from potential earthquakes in the South China Sea. Phys. Earth Planet. Interiors, 163, 233-244.Zhiguo Xu, 2015. Seismicity and Focal mechanisms in the South China Sea Region and its Tectonic Significances. </jats:p
The emerging legal framework for private sector development in Viet Nam's transitional economy
Get PDFA major objective of Viet Nam's transition to a market economy has been to reactivate the private sector in a mixed economy. Several new laws have been introduced in the past five years to implement this policy and to create an enabling environment for the private sector. The author reviews some of the more important laws and regulations that affect Viet Nam's private sector activities, including laws on real property, intellectual property, companies, domestic investment, foreign investment, bankruptcy, contracts, and dispute resolution. Anti-monopoly law has not yet been introduced in Viet Nam. The issue of competition is addressed in the context of trade law, the relative roles of the state and private sector, and restrictions in company law. These areas all establish the foundation of a legal framework for a market economy. The author concludes that Viet Nam's legal framework, like China's, is still influenced by ideology, which causes problems in such areas as private ownership of real property and with such fundamental legal concepts as"due process of law."It is noted that the private sector is constrained by the lack of an independent judiciary, the absence of private land ownership, other uncertainties in property law that limit the develpoment of financial markets, and the inherent bias of the system in favor of the state sector (and collective ownership). Also noted is a law-abiding attitude, equally important to development has been slow to develop. The author goes on to point out that the foreign investment process is too complicated, and its company law too restrictive. A first priority should be to strreamline regulations, as well as liberalize trade policy and increase efforts in privatization of state enterprises. In this respect the author notes that export processing zones may be a useful interim instrument to attract foreign investment but should be phased out over time. More important in the long term is a good investment climate resting on a strong legal foundation.Legal Products,Environmental Economics&Policies,Banks&Banking Reform,Municipal Housing and Land,Municipal Financial Management,Environmental Economics&Policies,Banks&Banking Reform,Municipal Housing and Land,Legal Products,Municipal Financial Management
A proposed adaptive image segmentation method based on Local Excitatory Global Inhibitory region growing
No full text
Algorithm and program for earthquake prediction based on the geological, geophysical, geomorphological and seismic data
Get PDFBy applying an improved method of the Earth's crust classification, we develop an algorithm and build an earthquake prediction program using a combination of geological, geophysical, geomorphological and seismic data.This program includes a system of multiple windows with different functions, which can divide fault zones into the different segments by the maximum magnitude values Mmax. Using the constructed program, we carried out an earthquake prediction test for the Northwest Vietnam by a combination of geological, geophysical, geomorphological and seismic data. According to the received results, zoning maps of maximum earthquake prediction for the researched region has been established. The results show that the areas, capable of generating earthquakes with Mmax = 6.5 - 6.8 are primarily concentrated along some major fault zones such as Lai Chau-Dien Bien, Son La, Song Ma, Song Da, Tuan Giao or near the intersection of these fault zones. The received results show a good accordance with the actual seismotectonic characteristics of the researched region.References Bui Van Duan, Nguyen Cong Thang, Nguyen Van Vuong, Pham Dinh Nguyen, 2013. The magnitude of the largest possible earthquake in the Muong La - Bac Yen fault zone. Journal of Sciences of the Earth 35, 53-49.Cao Dinh Trieu, 1999. Probable approach for long-term earthquake prediction in Vietnam based on the regulation of epicentral distribution. Journal of Geology, Series A (251), 14-21, Hanoi (in Vietnamese).Cao Dinh Trieu, Nguyen Huu Tuyen, Thai Anh Tuan, 2006. The correlation between the structure of the Earth’s crust and seismic activities in the Northwest region of Vietnam”. Journal of Sciences of the Earth, 28, 155-164, Hanoi (in Vietnamese).Cao Dinh Trieu, Ngo Thi Lu, Cao Xuan Bach et al., 2007. Prediction of maximum earthquake occurrence in Vietnam on the basis of crustal characteristics”. Proceedings of the 5th Vietnam’s Scientific Conference on Geophysics, 159-171, Science and Technics Publishing House, Hanoi (in Vietnamese).Dang Thanh Hai, Nguyen Duc Vinh, Cao Dinh Trieu, 2002. Long-term earthquake prediction in Lai Chau-Dien Bien region on the basis of time - magnitude model. Journal of Science and Technology, 40(4), 45-53, Hanoi (in Vietnamese).Dang Thanh Hai, 2003. Study on deep structures of the Earth’s crust and seismotectonic zoning in Northern Vietnam. Physics Ph.D. Thesis, 170p, Hanoi (in Vietnamese).Grishin A.P., 2001. The statistical model for predicting the occurrence time and magnitude of the earthquake”. Journal of Volcanology and Seismology (4), 60-65, Russian Academy of Sciences, Moscow. (in Russian).Grishin A.P., N.V. Kondoskaya, L.E. Levin, L.N. Solodinov, A.L. Petrov, O.M. Petrov, 2001. “Experiment of statistical prediction in Kaspi region (occurrence time, epicenter coordinate and magnitude value of the earthquake). Geophysics in the 21th century, The 3rd Collection of Reading Materials on Geophysics, Scientific World, 149-156.Gubin I.E., 1950. The method of seismotectonic zoning. The projects of The Geophysical Center, Russian Academy of Sciences, 13.Gumbel E.J., 1958. Statistics of Extremes”. Columbia Univ. Press.Gutenberg B. and G.F. Richter, 1954. Seismicity of the Earth and associated phenomena. Princeton Univ. Press.Ngo Thi Lu, Tran Viet Phuong, 2012. About the approach to building algorithms and processes to predict earthquakes by statistical model. Journal of Sciences of the Earth, 34(4), 535-541.Ngo Thi Lu, Tran Viet Phuong, 2013. Building a new algorithm of the program for separation of forshock and aftershock groups from earthquake catalog to ensure the independence of the events. Journal of Marine Science and Technology. 3A(13), 79-85.Ngo Thi Lu (Project manager), 2011. Assessment of the seismic potential in Vietnam based on a combination of geological, geophysical and seismic data”. The international scientific cooperation between Vietnam Academy of Science and Technology and Russian Academy of Sciences under the state-level protocol (2008-2010), Final Report, 163p, Hanoi (in Vietnamese).Ngo Thi Lu (Project manager), 2013. Establishment of experimental program for short-term earthquake prediction based on the statistical model combined with tectonophysics in Vietnam and adjacent regions. The independent project of Vietnam Academy of Science and Technology, Code VAST.DL.09/11-12, 125p, Hanoi (in Vietnamese).Nguyen Hong Phuong, 1991. Probabilistic assessment of earthquake hazard in Vietnam based on seismotectonic regionalization. Tecronophysics, 198, 81-93.Nguyen Hong Phuong, 1997. Evaluation of the maximum earthquake for seismic source zones in Vietnam by a combination of probability methods. The scientific works on geology and marine geophysics (3), 48-65, Science and Technics Publishing House, Hanoi (in Vietnamese).Nguyen Hong Phuong, 2001. Probabilistic Seismic Hazard Assessment Along the Southeastern Coast of Vietnam, Natural Hazards 24, 53-74.Nguyen Hong Phuong, Pham The Truyen, 2014. Probabilistic Seismic Hazard Assessment for the South Central Vietnam. Vietnam Journal of Earth Sciences 36, 451-461.Nguyen Dinh Xuyen (Project manager), Nguyen Ngoc Thuy et al., 1996. Database of earthquake mitigation measures in Vietnam. The final report of state-level independent project, Code KT-DL 92-07, 3 volumes, Institute of Geophysics, Hanoi (in Vietnamese).Nguyen Dinh Xuyen, 2002. Earthquake and earthquake hazard level. Internal document, Institute of Geophysics, Hanoi (in Vietnamese).Nguyen Dinh Xuyen, Pham Dinh Nguyen, Pham Quang Hung, Nguyen Anh Duong, 2003. Experiment of long-term earthquake prediction based on the mechanism of foreshock activities. Journal of Sciences of the Earth, 25(3), 193-200, Hanoi (in Vietnamese).Phan Trong Trinh, Ngo Van Liem, Nguyen Van Huong, Hoang Quang Vinh, Bui Van Thom, Bui Thi Thao, Mai Thanh Tan, Nguyen Hoang, 2012. Late Quaternary tectonics and seismotectonics along the Red River fault zone, North Vietnam. Earth-Science Reviews 114(3), 224-235.Phan Trong Trinh , Hoang Quang Vinh, Nguyen Van Huong, Ngo Van Liem, 2013. Active fault segmentation and seismic hazard in Hoa-Binh reservoir, Vietnam. Cent. Eur. J. Geosci. 5(2), 223-235.Pham Van Thuc and Kijko, A., 1985. Estimation of maximum magnitude and seismic hazard in Southeast Asia and Vietnam. Acta Geophys. Pol., XXX111 (4), 377-387.Pham Van Thuc, 2007. Seismology and earthquake in Vietnam. The monographs on natural resources and environment in Vietnam, Publishing House for Science and Technology, Vietnam Academy of Science and Technology, 378p (in Vietnamese).Reisner G.I., L.I. Ioganson, M.G. Reisner, Iu.E. Baranov, 1993. Characteristic classification of the Earth’s crust and the modern geological process. Publishing House of Russian Academy of Sciences, Moscow, 210p (in Russian).Reisner G.I., L.I. Ioganson, 1996. The Extraregional Seismotectonic Method for the Assessment of Seismic Potential. Natural Hazards 14, 3-10 (Kluwer Academic Publishers, printed in the Netherlands).Tran Thi My Thanh, 2002. Assessment of seismic hazard in Vietnam and adjacent regions. Physics Ph.D. Thesis, 161 pages, Hanoi (in Vietnamese).Vu Thi Hoan, Ngo Thi Lu, M.V. Rodkin, Tran Viet Phuong, 2014. Application of the generalized extreme value distribution to study the seismicity of the Southeast Asian. Journal of Geology. Series A, 341-345. Hanoi.
Determine train load and speed based on dynamic displacement results
Get PDFThe load and operational speed of trains on railway bridges play a significant role. In the context of increasing demand for rail transport, accurately determining these parameters not only helps ensure safety but also brings economic benefits and optimizes system efficiency. This research aims to determine the load and speed of trains based on dynamic displacement results obtained from sensors installed on railway bridges. The study was applied on a real urban railway bridge. The dynamic displacement data of the railway bridge under the influence of passing trains is collected using high-sensitivity LVDT sensors. By applying finite element models (FEM) and real-time displacement data analysis combined with optimization algorithms, the estimation of train load and speed is performed. The analysis results show that the estimated load and speed values are relatively accurate compared to reality. This method helps to accurately monitor and manage train load and speed. The research findings will contribute to improving safety, operational efficiency, and provide a solid scientific foundation for enhancing the railway transportation system
Determine train load and speed based on dynamic displacement results
Get PDFThe load and operational speed of trains on railway bridges play a significant role. In the context of increasing demand for rail transport, accurately determining these parameters not only helps ensure safety but also brings economic benefits and optimizes system efficiency. This research aims to determine the load and speed of trains based on dynamic displacement results obtained from sensors installed on railway bridges. The study was applied on a real urban railway bridge. The dynamic displacement data of the railway bridge under the influence of passing trains is collected using high-sensitivity LVDT sensors. By applying finite element models (FEM) and real-time displacement data analysis combined with optimization algorithms, the estimation of train load and speed is performed. The analysis results show that the estimated load and speed values are relatively accurate compared to reality. This method helps to accurately monitor and manage train load and speed. The research findings will contribute to improving safety, operational efficiency, and provide a solid scientific foundation for enhancing the railway transportation system
