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Wyszukujesz frazę "Park, Tae Hun" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
International Organizations for Rail Transport: Genesis and Evolution
Autorzy:
Park, Tae Hun
Powiązania:
https://bibliotekanauki.pl/articles/2092086.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Politycznych i Studiów Międzynarodowych
Tematy:
Railway transport
International organisations
International transport
International cooperation
Development of transport
Transport kolejowy
Organizacje międzynarodowe
Transport międzynarodowy
Współpraca międzynarodowa
Rozwój transportu
Opis:
This article addresses the origins and evolution of international organizations dedicated to international rail transport. From the beginning of rail history, most of the railway networks in Europe were built by numerous private companies, which continuously competed and collaborated with each other within domestic transport as well as international transport. European railway companies made connections across borders based on personal and financial network relationships and established various types of agreements and unions to make international traffic possible. This coalition allowed them to jointly operate member networks, including running direct trains and establishing tariff agreements. Since international transport has grown in size and complexity, international railway organizations have continuously evolved. This study proceeds as follows: the first section outlines the beginnings and development of international rail transport organizations. With the expansion of the rail network in Europe, international cooperation in the field of railways occurred early in the 19th century. This mainly took the form of bilateral or multilateral agreements or even treaties among the States. Initially, these agreements affected the establishment of international organizations. The second section draws out international organizations between the First World War and the Second World War. In the interwar period, the existing organizations continued to expand their scope of activities and new organizations were founded. The third section examines the impact of the Cold War on international rail organizations. During the Cold War, many organizations were established in Western Europe, with active international railway cooperation. In Eastern Europe, a new international organization was established under the influence of the Soviet Union. The fourth section explains changes in international organizations after the Cold War. After the collapse of the Soviet Union, the existing organizations steadily adapted themselves to changes in the political, economic, social, cultural and technological environments. Because of these various changes, new international organizations also emerged.(original abstract)
Źródło:
Stosunki Międzynarodowe - International Relations; 2017, 53, 4; 219-233
0209-0961
Pojawia się w:
Stosunki Międzynarodowe - International Relations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat Treatment Effect on Physical Properties of Stainless Steel / Inconel Bonded by Directed Energy Deposition
Autorzy:
Eom, Yeong Seong
Kim, Kyung Tae
Kim, Dong Won
Yu, Ji-Hun
Sim, Chul Yong
An, Seung Jun
Park, Yong-Ha
Son, Injoon
Powiązania:
https://bibliotekanauki.pl/articles/2049122.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
directed energy deposition
interface
physical properties
heat treatment
Opis:
In this study, stainless steel 316L and Inconel 625 alloy powders were additively manufactured by using directed energy deposition process. And heat treatment effect on hardness and microstructures of the bonded stainless steel 316L/Inconel 625 sample was investigated. The microstructures shows there are no secondary phases and big inclusions near interfacial region between stainless steel 316L and Inconel 625 except several small cracks. The results of TEM and Vickers Hardness show the interfacial area have a few tens of micrometers in thickness. Interestingly, as the heat treatment temperature increases, the cracks in the stainless steel region does not change in morphology while both hardness values of stainless steel 316L and Inconel 625 decrease. These results can be used for designing pipes and valves with surface treatment of Inconel material based on stainless steel 316L material using the directed energy deposition.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 4; 1049-1054
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
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