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Articles de revues sur le sujet « Underwater construction – History »

Auteur : Grafiati

Publié le 10 mars 2023

Mis à jour le 31 juillet 2025

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1

Reyff, James A. "A brief history of underwater construction noise." Journal of the Acoustical Society of America 141, no. 5 (2017): 3846. http://dx.doi.org/10.1121/1.4988574.

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Fedorovich, M. O., and A. Yu Kosmacheva. "COMPUTER MODELING OF THE SAND BODIES DEPOSITIONAL HISTORY OF THE MIDDLE JURASSIC PETROLEUM PLAY (BY THE EXAMPLE OF THE GERASIMOVSKOE FIELD, WESTERN SIBERIA)." Geology and mineral resources of Siberia, no. 4 (2020): 8–13. http://dx.doi.org/10.20403/2078-0575-2020-4-8-13.

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The present paper describes the DIONISOS software package (Beicip-Technologies), where the reconstruction of the accumulation conditions and facies modeling of sand reservoirs Yu10, Yu9, Yu8, Yu7 and Yu6 of the Tyumenskaya Formation and carbonaceous-clay members acting as fluid seals within the Gerasimovskoye oil and gas condensate field located in the south of the Parabel district of the Tomsk region. Reconstructions of facies environments make it possible to consistently restore conditions and create a general principled model of the accumulation of sandy-argillaceous deposits of the Middle

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Meijer, Fik, and André Wegener Sleeswyk. "On the construction of the ‘Syracusia’ (Athenaeus V. 207 A-B)." Classical Quarterly 46, no. 2 (1996): 575–78. http://dx.doi.org/10.1093/cq/46.2.575.

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It is perhaps significant that one of the more informative texts on ancient shipbuilding predates the period in which Greco-Roman shipping flourished. It is Homer's description of how Odysseus built a ship () on the island of the nymph Calypso, with which he intended to return to his native island of Ithaca (Od. 5.244–57). The text is of exceptional interest because it gives as early as the eighth century B.C. a stepby- step description of the tenon-and-dowel ‘shell-first’ method typical of Greco- Roman ship-building, which has been so amply confirmed in the last few decades by underwater arch

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Zhang, Song, Ming He, Guoliang Dong, and Xianying Wang. "New Perceptions of Ancient Commerce Driven by Underwater Ancient Site Investigations: A Case Study of Xinfeng River Basin." Heritage 7, no. 5 (2024): 2313–47. http://dx.doi.org/10.3390/heritage7050110.

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In the 1950s and 1960s, to address the flooding issues and power shortage that hindered national construction, the Xinfeng River hydropower plant was planned and built to prevent floods, store water, and generate electricity. Consequently, many ancient ruins in the study area were drowned, including ancient post roads, channels, villages, towns, bridges, and other relic sites. By checking historical data and adopting integrated underwater acoustic detection, we conducted a comprehensive cultural-relics survey on the flooded area under Wanlv Lake in the Xinfeng River Basin. A side-scan sonar de

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Ivce, Renato, Matej Grubiša, and Darijo Mišković. "Protection Coatings for the Underwater Part of Ship’s Hull." Journal of Maritime & Transportation Science 55, no. 1 (2018): 59–70. http://dx.doi.org/10.18048/2018.00.04.

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In this article authors present a general consideration of the underwater part of ship’s hull protection by protective coatings, paying particular attention to antifouling paints. Following the presentation of the importance of ship’s hull maintenance and protection in order to make navigation safer and to keep the ship in operation for as long as possible, a summary is made of the main types of antifouling products used throughout the history up to the present time. As far back as a thousand years BC, people had developed techniques to protect objects from falling into disrepair and understoo

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Alhourani, Abdulla, Mohammad Nazzal, and Basil Darras. "Submerged Friction Stir Back Extrusion of AZ31 Magnesium Alloy." Key Engineering Materials 933 (October 17, 2022): 78–87. http://dx.doi.org/10.4028/p-9i4odm.

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Friction Stir Back Extrusion (FSBE) is a new grade of severe plastic deformation process capable of producing metallic tubular geometries that exhibit ultrafine grain structure and superior mechanical properties. FSBE of tubular sections provide opportunities for producing lightweight rigid structures for the automotive, aerospace and construction industries. This research investigates the effect of submerging conditions (in water at 25 °C and 2 °C) for Magnesium AZ31-B tubes on the grain size, mechanical properties, temperature history and power consumption. Submerged FSBE is compared to FSBE

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Omar, Priyanka, MVN Siva Kumar, and Subbarao Yarramsetty. "Management of Various Safety Parameters in Tunnel Construction: A Critical Review." E3S Web of Conferences 170 (2020): 06003. http://dx.doi.org/10.1051/e3sconf/202017006003.

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Population is growing rapidly and so are vehicles on roads. This leads to enormous need of tunnels and subways for easy locomotion and mobilization. From conventional tunnels, for sewage and water facilities to modern electrified tunnels, for mass transit and underwater highways, method of construction of a tunnel to its safety inspection and maintenance has taken a wide leap. Tunnel construction requires wide range of resources like human, technology, machinery, materials, energy, and finance. To handle all these resources simultaneously becomes complex and requires good management. Even with

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Carrick, F., H. Peereboom, and G. Thompson. "Success of Enclosures Featuring Innovative Design Features for Public Display of Platypuses." Australian Mammalogy 20, no. 2 (1998): 300. http://dx.doi.org/10.1071/am98301.

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The history of public displays of platypuses has often not been a happy one for the platypuses concerned; however, there are also some examples of success. Although other approaches to keeping platypuses in captivity have been developed, most of the interesting things which platypuses do occur underwater, and a properly designed and engineered structure provides the opportunity for much larger numbers of people to see platypuses than in open situations. The construction of displays at Brisbane Forest Park and Fleay&apos;s Wildlife Park incorporates several innovative features, but at least

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Medaglia, Salvatore, Fabio Bruno, Ana Castelli, et al. "Archival Research, Underwater Optical Surveys, and 3D Modelling: Three Stages for Shaping the Wreck of the Steamship Bengala (Isola di Capo Rizzuto, Crotone, Italy)." Heritage 8, no. 1 (2024): 13. https://doi.org/10.3390/heritage8010013.

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Bengala, a steamer that sank in 1889 near Capo Rizzuto, Italy, was a relatively new vessel for its time, with an unusually short 18-year service life, given that steamers of the period typically operated for 30 to 40 years. Despite its brief history, SS Bengala played a significant role in the development of Italy’s young merchant navy, undergoing multiple ownership changes and serving various Italian shipping companies. Employed mainly along the route to Southeast Asia, it transported Italian migrants overseas and also participated in troop raids during the Italian military expedition to Erit

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Chapuis, Robert P., Jacques Lavoie, and Doris Girard. "Design, construction, performance, and repair of the soil–bentonite liners of two lagoons." Canadian Geotechnical Journal 29, no. 4 (1992): 638–49. http://dx.doi.org/10.1139/t92-071.

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A sand–bentonite mix was used to form the liner of four lagoons for the La Tuque and Haute-Mauricie sewage water treatment project. This paper describes the site conditions, design, and construction of the lagoons. Since the results of the control tests on the sand–bentonite were satisfactory, it was expected that the liner would be as impervious as it was designed to be. Such control tests, however, provide local values that can give only an indirect prediction of the waterproofing of each lagoon. The global performance was evaluated in 1988, after filling the lagoons, by comparing their leak

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Nikolić, Marko, and Jelena Šćekić. "Cultural and natural heritage of Djerdap: Lost history or potential for sustainable development?" Arhitektura i urbanizam, no. 55 (2022): 24–37. http://dx.doi.org/10.5937/a-u0-37943.

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The Roman Limes, the former natural border of the Roman Empire, has been recognized as a cultural landscape with exceptional universal values of international importance by the relevant organization for the protection of cultural and natural heritage - UNESCO. The Danube River is an integral part of the Roman Limes, a testimony to the culture and traditions of the peoples who lived on the banks of the Danube, as well as cultural heritage in general. Within the part of the Danube River that passes through the Republic of Serbia, the Djerdap segment stands out. It includes sites of different his

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Shcherbakov, V. S., S. V. Kulichkov, and P. S. Minakova. "Additive technologies application for repairing and restoring elements of submarine pipelines." ТЕНДЕНЦИИ РАЗВИТИЯ НАУКИ И ОБРАЗОВАНИЯ 104, no. 13 (2023): 195–98. http://dx.doi.org/10.18411/trnio-12-2023-752.

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The introduction of additive technologies in the oil and gas industry has just begun and is at the initial stage of the possible introduction and expansion of additive manufacturing in the oil and gas industry. The article provides a brief introduction to additive manufacturing in the repair of an underwater pipeline in an oil and gas area, and summarizes the state of development and scope of additive manufacturing technologies on the example of foreign companies. This article provides an overview of robotic use for underwater pipeline repair.

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Sun, Yang, and Bo Hua. "Structure Research of Resistance Shunt Type Piezoelectric Composite and Underwater Sound Absorption Performance Analysis." International Journal of Acoustics and Vibration 28, no. 4 (2023): 403–19. http://dx.doi.org/10.20855/ijav.2023.28.41983.

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The high-efficiency sound absorption of underwater sound-absorbing materials under "low frequency" and "wide frequency" conditions has become a hot topic in current research. Underwater semi-active sound absorption can help to improve low frequency sound absorption performance by designing the structure of the piezoelectric composite and the shunt circuits, and it is also advantageous due to its simplicity, compactness, ease of installation, low cost, and high stability. In this paper, a kind of resistance shunt type piezoelectric composite is designed, and its underwater sound absorption perf

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Stablichenkova, Dasha. "A Study of the Accuracy of Positioning in a Network of Wireless Underwater Sensors Depending on the Genetic Algorithm." Galoitica: Journal of Mathematical Structures and Applications 9, no. 1 (2023): 22–30. http://dx.doi.org/10.54216/gjmsa.090203.

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Wireless Sensors Networks (WSNs) are a scientific revolution in wireless communications and embedded systems. WSN is based on the idea of abandoning the human factor, which was often an obstacle because it was not possible to be in the places where these networks are placed, especially if the collection of information required a long time, Underwater wireless sensor nodes can be deployed for monitoring, exploration, and for disaster protection, and this is what is called Underwater Wireless Sensor Networks (UWSNs). nIn this paper, we will study how the parameters of the genetic algorithm chang

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Soma, Katrine, Peter Verweij, Elesiër Angel, and María A. Naranjo. "Inclusiveness in the Caribbean-Locals’ Perceptions about Nature, Tourism and Recreation in Bonaire." Sustainability 14, no. 21 (2022): 14167. http://dx.doi.org/10.3390/su142114167.

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The economies of small tropical islands often benefit from large-scale tourism, attracted by the guarantee of beach facilities, sun and warmth, landscape beauty, and cultural and underwater life. While these are highly valued assets, it is unclear how local communities benefit from tourism, or how they perceive their natural environment, which has been the basis for their rich cultural history. Against this background, the main aim of this article is to investigate inhabitants’ perceptions about locals’ inclusiveness in tourism and recreation on a small island called Bonaire. A total of 400 ho

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Chen, Zhimin, Daren Zhou, Jingjun Lou, et al. "Experimental Validation of Reconstruction of Sound Source Radiation in an Underwater Half-Space Bounded by a Water-Air Interface." International Journal of Acoustics and Vibration 29, no. 1 (2024): 80–85. http://dx.doi.org/10.20855/ijav.2024.29.12024.

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When a vibrating structure is located in a half-space bounded by a reflecting surface, the measured sound pressures are polluted by the reflection, so that they cannot show the actual sound radiation from the structure. The half-space spherical wave function expansion-based near-field acoustical holography approach is proposed to reconstruct the direct radiation from the sound source using the polluted sound pressures, which has been validated by numerical simulations. This paper deals with the experimental validation of this approach applied in an underwater half-space bounded by a water-air

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Lepskiy, Maxim. "Dutch Navigation Model of Decision Making." Newsletter on the Results of Scholarly Work in Sociology, Criminology, Philosophy and Political Science 3, no. 1 (2022): 58–75. http://dx.doi.org/10.61439/seeh6417.

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In the contemporary consumer-oriented world, where desire often outweighs rationality, there is a growing significance attributed to specific-historical decision-making models, among which the Dutch navigational model stands out. The article explores the primary dimensions of importance and universality inherent in decision-making mechanisms within human life. Specifically, it examines the case of the historical-cultural, semantic, and environmental legacy of the East and West India Company in Amsterdam through the application of visual sociology techniques related to the environment and decis

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Skrzyński, Stanisław, and Grzegorz Grzeczka. "Studies on Saturation Diving in Poland and Practical Application of Their Findings. Part 2 C. Developing a Polish System of Saturation Diving in the 1980s and 1990s." Polish Hyperbaric Research 81, no. 4 (2022): 69–92. http://dx.doi.org/10.2478/phr-2022-0021.

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Abstract This article is another in a series of articles on the research and the deployment of saturation diving technology in our country. This part discusses Polish specificities and achievements against the background of economic and historical context. It describes the creation of the base for saturation diving in the times of economic hardship in our country. Over this period, the shipbuilding industry was driving saturation diving research as a basis for the construction of diving systems to be exported to secure the extraction of the resources from the sea shelf. This paper describes th

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Skrzyński, Stanisław, and Grzegorz Grzeczka. "Studies on Saturation Diving in Poland and Practical Application of Their Findings. Part 2 b. Developing a Polish System of Saturation Diving in the 1980s and 1990s." Polish Hyperbaric Research 80, no. 3 (2023): 8–22. http://dx.doi.org/10.2478/phr-2022-0013.

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Abstract This article is another in a series of articles on the research and the deployment of saturation diving technology in our country. This part discusses Polish specificities and achievements against the background of economic and historical context. It describes the creation of the base for saturation diving in the times of economic hardship in our country. Over this period, the shipbuilding industry was driving saturation diving research as a basis for the construction of diving systems to be exported to secure the extraction of the resources from the sea shelf. This paper describes th

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Amri, Ulil. "Recent Sediment Analysis, Study Case: Sub Bottom Profiler Data Line 8 Geomarine Research Vessels." Journal of Wetlands Environmental Management 7, no. 2 (2019): 123. http://dx.doi.org/10.20527/jwem.v7i2.171.

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<p>North Aru Island’s offshore had a long exploration history since 1973 until present. The characteristics of seabed can be studied through the shapes, acoustic reflection pattern, type of substrate or sediment, or by living organisms at the seafloor. In Indonesia, the sub-bottom profiler data was previously only used to measure sea depth. This study was expected to provide overview and updated information about sea depth, seabed and sedimentary layers characteristics based on generated acoustical reflection values and to identify information about abiotic compounding seabed (grain size

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Liu, Weixing, Zihan Xia, Linyan Wu, et al. "Underwater remotely operated vehicle control system with optimized PID based on improved particle swarm optimization." DESALINATION AND WATER TREATMENT 314 (2023): 322–29. http://dx.doi.org/10.5004/dwt.2023.30037.

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Zhu, Wei, Mingsu Shen, Shixin Dai, Kuanning Liu, and Yongdi Qi. "Channel Evolution under the Control of Base-Level Cycle Change and the Influence on the Sustainable Development of the Remaining Oil—A Case in Jiang Ling Depression, Jiang Han Basin, China." Sustainability 14, no. 19 (2022): 12518. http://dx.doi.org/10.3390/su141912518.

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The extension of river channels is one of the key factors in determining the remaining oil distribution. Different sedimentary facies and bedding types of oil layers will form specific characteristics of remaining oil distribution after water injection development. Using massive drilling, core, logging, seismic, and production data, on the basis of sequence stratigraphy base-level cycle change, the river records and development history are restored, and the fine connectivity of reservoirs and the configuration relationship of production wells are studied. The following conclusions are drawn: (

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Kang, Ha Neul A. Reum, and Mi-Hwa Hong. "Relationship among Water Safety Incidents, Aquatic Anxiety, and Intention to Continuous of Elementary School Students Participating in Survival Swimming." Korean Society for Leisure Sciences 15, no. 1 (2024): 43–53. http://dx.doi.org/10.37408/kjls.2024.15.1.43.

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This study purpose to investigate the relationships water safety incidents, aquatic anxiety, and intention to continuous of elementary students participating in survival swimming. The study participants 358 elementary grades 3 to 6 experience participating in survival swimming. Statistical analysis using the SPSS, AMOS. The analysis included reliability, correlation, exploratory factor, confirmatory factor analysis, and structural equation modeling. First, aquatic safety incidents were found to be partially influenced by aquatic anxiety. Second, aquatic safety incidents were found to partially

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Foster, Cheryl, Heather McKillop, and E. Cory Sills. "SEA-LEVEL RISE AND SETTLEMENT AT EK WAY NAL: CORING THE PAST." Research Reports in Belizean Archaeology 18 (2023): 365–74. http://dx.doi.org/10.62064/rrba.18.31.

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Excavations in the spring and summer of 2022 were carried out at the underwater ancient Maya salt work of Ek Way Nal in Punta Ycacos Lagoon, Paynes Creek National Park, Belize. Ek Way Nal provided salt to the ancient Maya during the Late and Terminal Classic periods (600-900 C.E.). In additional to excavations in buildings at the site, a 1 X 2 m unit was excavated to extract a sediment column for examining the relationship between the ancient Maya settlement at Ek Way Nal and sea-level rise. In this article, the excavations, extraction of the sediment column, and processing it for laboratory a

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Hendricks, Waldon, and Boniface Kabaso. "A Framework for Selecting Optimal Network Protocols for IoT Technologies in Image and Vision-based Applications." International Conference on Artificial Intelligence and its Applications 2023 (November 9, 2023): 6–14. http://dx.doi.org/10.59200/icarti.2023.002.

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The growth of Internet-of-Things (IoT) technologies and the rapid advances in image- and video-based applications make it necessary to select the most appropriate network protocols that ensure reliable, efficient and robust system performance. This study presents a framework to help select appropriate network protocols for Narrowband IoT applications. This framework evaluates and compares the most popular wireless and wired IoT technologies, especially Narrowband IoT (NB -IoT) and 5G, based on their characteristics, strengths and limitations. The research considers factors such as latency, ban

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Sills, E. Cory, and Heather McKillop. "THE IMPORTANCE OF USING SEDIMENT CHEMISTRY TO INTERPRET ANCIENT MAYA SALT MAKING ACTIVITIES AT THE PAYNES CREEK SALT WORKS." Research Reports in Belizean Archaeology 18 (2023): 347–54. http://dx.doi.org/10.62064/rrba.18.29.

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Chemical analysis of soils and sediments are useful for finding activities and defining space not readily apparent in the artifact assemblage due to varied preservation. In the Maya cultural area, chemical analysis of anthropogenic and naturogenic terrestrial soils and marine sediments have been used to find activities that occurred at ancient Maya sites both inside and outside of buildings. The Underwater Maya project has adapted soil chemistry, usually conducted at terrestrial sites, to the submerged Paynes Creek Salt Works. The acidic red mangrove peat has remarkably preserved wooden posts

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Platov, Illia, and Oleksii Pavlovskyi. "VERTICAL MOTION OF MINIATURE WALKING ROBOTS. STATE OF THE PROBLEM REVIEW." Bulletin of Kyiv Polytechnic Institute. Series Instrument Making, no. 65(1) (June 30, 2023): 96–103. http://dx.doi.org/10.20535/1970.65(1).2023.283444.

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The article reviews the state of the art of developing miniature walking robots for vertical movement due to friction forces between limbs and surface. In particular, special attention is paid to miniature walking robots - hexapods, as they have good stability and cross-country ability compared to other types of robots, both wheeled and tracked. Unlike other types of robots, hexapods can be fully autonomous. This makes them a potentially versatile tool for solving a variety of tasks in different areas, such as: 1) rescue operations - hexapods can penetrate destroyed buildings to assess the con

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Shuisky, Yu D., G. V. Vykhovanetz, and A. B. Murkalov. "CLASSIFICATION OF ANTHROPOGENOUS RELIEF FORMS WITHIN COASTAL ZONE OF UNTIDAL SEAS IN EUROPE." Odesa National University Herald. Geography and Geology 27, no. 2(41) (2023): 83–97. http://dx.doi.org/10.18524/2303-9914.2022.2(41).268703.

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Problems Statement and Purpose. The article defines the intensification of the development of anthropogenic geomorphology as one of the important areas of geographical science in Ukraine. Until now, there is practically no geomorphological classification of anthropogenic relief forms in the coastal zone of the seas and on the coasts in fundamental works. This significantly inhibits the further development of this scientific direction and adversely affects practical factors. Review and analysis of the history of research on the development of anthropogenic geomorphology showed the beginning of

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Skrzyński, Stanisław. "Research on Saturation Diving in Poland and its Implementation. Part I A. General Characteristics of Saturation Diving Research in Our Poland. Pioneer Times; 1967-1985." Polish Hyperbaric Research 77, no. 4 (2021): 53–72. http://dx.doi.org/10.2478/phr-2021-0021.

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Abstract The article is the first in a series of articles on the research and implementation of saturation diving technology in our country which presents the specific Polish conditions and achievements against the background of economic and historical circumstances. In view of the fact that research and implementation has a history of more than half a century, selected key figures of this period are recalled, some of whom have disappeared in the fogs of history. In the specialized literature of the world, the Polish underwater habitats of Meduza are among top 6 countries that researched and i

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Skrzyński, Stanisław. "Research on saturation diving in Poland and its implementation. Part I B. General characteristics of saturation diving research in our Poland. Pioneer times; 1967-1985." Polish Hyperbaric Research 75, no. 2 (2022): 73–86. http://dx.doi.org/10.2478/phr-2022-0005.

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Abstract The article is the first in a series of articles on the research and implementation of saturation diving technology in our country which presents the specific Polish conditions and achievements against the background of economic and historical circumstances. In view of the fact that research and implementation has a history of more than half a century, selected key figures of this period are recalled, some of whom have disappeared in the fogs of history. In the specialized literature of the world, the Polish underwater habitats of Meduza are among top 6 countries that researched and i

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Долгих, Г. И., and С. Г. Долгих. "Deformational features of tsunami." Гидросфера. Опасные процессы и явления 3, no. 2 (2020): 260–71. http://dx.doi.org/10.34753/hs.2020.2.3.260.

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Цунами являются одними из самых катастрофических природных явлений, приносящих колоссальные разрушения и уносящих большое число человеческих жизней. Причины возникновения цунами могут быть различными: подводные землетрясения, подводные оползни, извержения вулканов. Даже известны случаи возникновения цунами в результате обрушения в море больших оползней и обвалов. Изучением физики возникновения и развития цунами занимались с древности и продолжают заниматься учёные разных стран. Основное направление исследований связано с построением краткосрочного прогноза землетрясений. В настоящее время трад

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KUDRYASHOVA, Elena V., Mikhail Yu OPENKOV, and Larisa A. ZHGILEVA. "On the Methodology of Subglacial Oceans." Arctic and North, no. 43 (June 24, 2021): 253. http://dx.doi.org/10.37482/issn2221-2698.2021.43.253.

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Throughout all periods of development, the history of mankind has been closely intertwined with the sea. Craving for perception of the unknown has always been favored for humans. The interrelations between people and water element were actively considered by the representatives of natural, exact and engineering sciences. Humanitarian thought can also make a contribution to the study of the oceans. The authors propose substantiation for the formation of the methodology of subglacial oceans. The methodology refers to the theory of thought and action. Modern methodology is capable of constructing

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Krylov, Artem A., Daria D. Rukavishnikova, Mikhail A. Novikov, et al. "The Main Geohazards in the Russian Sector of the Arctic Ocean." Journal of Marine Science and Engineering 12, no. 12 (2024): 2209. https://doi.org/10.3390/jmse12122209.

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The Arctic region, including vast shelf zones, has enormous resource and transport potential and is currently key to Russia’s strategic development. This region is promising and attractive for the intensification of global economic activity. When developing this region, it is very important to avoid emergency situations that could result in numerous negative environmental and socio-economic consequences. Therefore, when designing and constructing critical infrastructure facilities in the Arctic, it is necessary to conduct high-quality studies of potential geohazards. This paper reviews and sum

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Brito, Cristina. "The Voice of Skogula in 'Beasts Royal' and a Story of the Tagus Estuary (Lisbon, Portugal) as Seen through a Whale's-Eye View." Humanities 8, no. 1 (2019): 47. https://doi.org/10.3390/h8010047.

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Patrick O’Brian inspired this work, with his 1934 book of chronicles “Beasts Royal,” where he gives a voice to animals. Therein, among other animals, we find Skogula, a young sperm whale journeying with his family group across the South Seas and his views on the surrounding world, both underwater and on land. This paper tells a story of historical natural events, from the viewpoint of a fin whale that travelled, rested and stranded in the Tagus estuary mouth (Lisbon, Portugal) during the early 16th century. It allows us to move across time and explore the past of this estuari

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Liu, Songyu, Taishan Lu, Guojun Cai, Kai Wu, Fengwen Lai, and Wenjun Xia. "Use of Cut-and-Cover method to Construct a 10-km Long Large-Span Underwater Tunnel: Case Study." Canadian Geotechnical Journal, February 19, 2025. https://doi.org/10.1139/cgj-2024-0400.

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This paper presents a comprehensive case study of the construction of a 10-km-long large-span underwater tunnel under Taihu Lake using the cut-and-cover method. The main challenges for the design and construction of the tunnel are limiting soil deformation and tunnel settlement, controlling the groundwater table, improving the construction efficiency, and meeting the environmental requirements. The strategies to address these challenges were summarized, including a four-zone staged excavation configuration, the use of piles for tunnel settlement control, and the use of cofferdams and waterproo

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McCarthy, John, and Wendy van Duivenvoorde. "A Virtual Reconstruction of the Batavia Shipwreck in Its Landscape." Historical Archaeology, June 8, 2023. http://dx.doi.org/10.1007/s41636-023-00399-y.

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AbstractWe present a digital reconstruction of a shipwreck in a landscape context, illustrating the value of combining and synthesizing spatial data from a wide variety of sources to provide new insights on a heavily studied archaeological site. The shipwreck used for this case study is Batavia, one of the best-known shipwrecks in the world due to its rarity as an early Dutch East Indiaman, its association with the early days of the discipline of maritime archaeology, and with the dramatic events that followed the wrecking of the ship on an isolated reef off the west coast of Australia in 1629

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Zhao, Haonan, Xiaohua Zhao, and Hongyuan Fang. "Study on load distributing function of square slab surface under the action of underwater close‐in blast loading." Structural Concrete, February 13, 2024. http://dx.doi.org/10.1002/suco.202301027.

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AbstractThe mode and magnitude of the blast load are the main cause of damage to the structure. Most current studies have simplified the blast load into a bilinear form that differs greatly from the actual time history curve and is applied directly to the structure, avoiding the fluid–solid coupling interaction between the water fluid and the structure. The simplified blast load for near‐explosion or internal explosion will bring a big error to the calculation results. To quickly determine the load on the structure surface under the action of underwater near the explosion, this study studies t

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Barciela-Rial, Maria, Barend A. P. van den Bosch, Thijs van Kessel, Jasper Griffioen, and Johan C. Winterwerp. "Experimental and numerical analysis of underwater consolidation of dredged sediment: a case of study for the Marker Wadden." Frontiers in Marine Science 11 (December 2, 2024). https://doi.org/10.3389/fmars.2024.1466650.

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Dredged sediments, which are mud suspensions with concentrations exceeding the gelling point, are utilised in reclamation and Building with Nature projects. Beyond the gelling point, flocs occupy space and begin to form a network structure. This study investigates the impact of initial conditions, specifically the concentration above the gelling point and the stress state, on the consolidation of dredged sediment. The sediment from Lake Markermeer in the Netherlands was studied, specifically in the context of the construction of the Marker Wadden wetland. Material parameters were determined us

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Jilkén, Olle. "A Mythological Nudist Lost in Swedish Suburbia: A study of the Nix’s masculinity and media-loric function in the manga series Oblivion High." Shima: The International Journal of Research into Island Cultures 15, no. 2 (2021). http://dx.doi.org/10.21463/shima.134.

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This article explores the visual representation and function of the folkloric Scandinavian nix in the manga series Oblivion High (2012–2014) published by the manga studio Ms Mandu. The aim of the research is to investigate how a well-known folkloric image develops and to consider the nix’s portrayal of masculinity. The article is a critical cultural study based on feminist and queer perspectives on visual culture and folklore studies. The article concludes that the nix in Oblivion High must update his desirability through spectacular clothing and change of musical instrument to meet the contem

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Q, Ma, Wu D, Yue Y, et al. "The Effect of 6-Meter Underwater Diving Intervention on Recovery of Exercise-Induced Fatigue." Austin Sports Medicine 8, no. 1 (2023). http://dx.doi.org/10.26420/austinsportsmed.2023.1055.

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Objective: To evaluate the effect of 6-meter underwater diving on recovery of exercise-induced fatigue and explore the potential mechanism. Method: Thirty-three male sophomores majored in physical education were included in this self-control, cross-over study. The fatigue was induced through programed swimming exercise at same intensity for both control and intervention groups. After exercise-induced fatigue, the subjects recovered through sitting on the floor and 6-meter underwater diving for 15 minutes in control and intervention groups respectively. The parameters observed included Heart Ra

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Lebedev, P. D., A. A. Lempert, and A. L. Kazakov. "Algorithms of optimal covering of 2D sets with dynamical metrics." Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta, November 2022, 58–72. http://dx.doi.org/10.35634/2226-3594-2022-60-04.

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The paper deals with the problem of constructing the thinnest covering for a convex set by a set of similar elements. As a distance between two points, we use the shortest time it takes to achieve one point from another, and the boundary of each covering circle is an isochron. Such problems arise in applications, particularly in sonar and underwater surveillance systems. To solve the problems of covering with such circles and balls, we previously proposed algorithms based both on variational principles and geometric methods. The purpose of this article is to construct coverings when the charac

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Alshehri, Ali, Lujain K. Bukhari, Shatha A. Almasswary, et al. "Prevalence of Eustachian Tube Dysfunction and Its Associated Factors among the General Public in Aseer Region, Saudi Arabia." World Family Medicine Journal /Middle East Journal of Family Medicine, January 2024. http://dx.doi.org/10.5742/mewfm.2024.95257003.

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Introduction: The Eustachian tube connects the middle ear to the back of the nose. When it doesn’t function properly, it’s called Eustachian Tube Dysfunction (ETD). This can lead to symptoms like muffled hearing, popping sounds, and discomfort. Recent studies in Saudi Arabia found high ETD prevalence rates (around 42.49%). ETD can cause ear issues and impact daily life. This study aims to evaluate the prevalence and associated factors of ETD in the Aseer region, Saudi Arabia. Methodology: A descriptive cross-sectional questionnaire-based study was conducted among the population of Aseer region

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Asmiani, Asmiani, and Hayari Hayari. "SEJARAH BANDARA MATAHORA DI PULAU WANGI-WANGI KABUPATEN WAKATOBI (2007-2017)." Jurnal Penelitian Pendidikan Sejarah UHO 3, no. 3 (2020). http://dx.doi.org/10.36709/jpps.v3i3.12820.

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ABSTRAK: Permasalahan pokok dalam penelitian ini adalah: (1) Apa latar belakang pembangunan Bandara Matahora di Pulau Wangi-Wangi Kabupaten Wakatobi, (2) Apa kendala yang dihadapi dalam pembangunan Bandara Matahora di Pulau Wangi-Wangi Kabupaten Wakatobi? (3) Apa dampak yang ditimbulkan terhadap pembangunan Bandara Matahora di Pulau Wangi-Wangi Kabupaten Wakatobi? dan (4) Bagaimana Perkembangan pembangunan Bandara Matahora di Pulau Wangi-Wangi Kabupaten Wakatobi? Penelitian ini menggunakan metode sejarah yang dikemukakan oleh Helius Sjamsuddin, yang terdiri atas 3 tahap yaitu: (1) Heuristik ya

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Perez-Alvaro, Elena. "Indigenous rights and underwater cultural heritage: (de)constructing international conventions." Maritime Studies 22, no. 3 (2023). http://dx.doi.org/10.1007/s40152-023-00320-6.

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AbstractPeople, ideas and products of all civilisations have been moved by ships, making oceans one of the major drivers for the divergence and convergence of human societies. Furthermore, human beings have interacted and lived on and around oceans, so their heritage provides testimony to many periods and aspects of our shared history. The marine policies to protect underwater and coastal heritage are complex, since this heritage has an intricate two-way relationship with anthropology and law. The legal instruments to specifically protect underwater cultural heritage do not include the conside

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Pinghao, Zhang, Jiang Gang, and Hu Yanhong. "Budget and Management Inspiration for the Research and Development Expenses of the US Navy's Unmanned Underwater Vehicle." Science Innovation, November 29, 2023. http://dx.doi.org/10.11648/j.si.20231106.19.

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Qin, Ke, Li He, Ding Chaolong, et al. "Favorable Reservoir Formation Models for Nearshore Underwater Fans in Narrow and Long Graben Type Fault Basins: A Case from Botai Sag of Yitong Basin." Earth Sciences, January 18, 2024. http://dx.doi.org/10.11648/j.earth.20241301.11.

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Wahlig, Victoria, and Ricardo A. Gonzales. "Enhancing marine debris identification with convolutional neural networks." Journal of Emerging Investigators, 2024. http://dx.doi.org/10.59720/23-150.

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Oceanic debris, predominantly plastic, inflicts catastrophic damage on marine ecosystems, threatens aquatic life through entanglement, strangulation, and starvation, and increasingly accumulates as microplastics within the tissues of marine species consumed by humans. Assessing and mitigating this crisis is complicated by the wide-ranging distribution of waste by ocean currents to remote and deep-sea locations. In this study, we developed a deep learning model to discern and identify components of images captured by an underwater remotely operated vehicle (ROV). We hypothesized that the model

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"Review of Carvel Construction Technique—5th International Symposium on Boat and Ship Archaeology, Amsterdam, 1988, by R. Reinders and K. Paul; Anatomy of the Ship, the 24-gun Frigate Pandora, by J. Mackay and R. Coleman; The Prehistoric Exploration and Colonization of the Pacific, by G. Irwin; La Charpenterie Navale Romaine, by M. Rival; Advances in Underwater Archaeology, by J. B. Arnold III; Kultschiffe und Schiffskulte im Altertum, by A. Göttlicher and Eighteenth Century Shipbuilding: Remarks on the Navies of the English and the Dutch, by B. Ollivier." International Journal of Nautical Archaeology 22, no. 3 (1993): 299–304. http://dx.doi.org/10.1006/ijna.1993.1016.

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