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Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)最新文献

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STUDY OF DETERMINING RISK LEVEL REGARDING SWIMMING CONDITION ON BATHING BEACH USING AI 利用人工智能确定泳滩游泳状况风险等级的研究
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 2023-09-01 DOI: 10.2208/jscejoe.78.2_i_757
Haruki Toguchi, Ryo Shimada, Ryo Sagisaka, T. Ishikawa, T. Komine
{"title":"STUDY OF DETERMINING RISK LEVEL REGARDING SWIMMING CONDITION ON BATHING BEACH USING AI","authors":"Haruki Toguchi, Ryo Shimada, Ryo Sagisaka, T. Ishikawa, T. Komine","doi":"10.2208/jscejoe.78.2_i_757","DOIUrl":"https://doi.org/10.2208/jscejoe.78.2_i_757","url":null,"abstract":"In Japan, 2,000 to 3,000 drowning accidents occur every summer season at major bathing beaches. In order to prevent drowning accidents, beachgoers themselves need to be aware of the dangers and avoid them. As a way to do this, bathing beaches provide daily risk levels regarding swimming conditions to beachgoers using three levels of beach safety flags. However, the risk levels are determined subjectively and empirically by lifesavers and beach administrators based on weather and sea conditions. The characteristics of past drowning accidents are not taken into account. In this study, we suggest an objective method of determining the risk levels based on the probability of drowning accidents. We have created an AI model that can predict the probability of drowning accidents with high accuracy using a total of 53 features such as usage, weather and sea conditions of a study beach in Japan. This method enables appropriate judgment of swimming conditions to prevent many drowning accidents. The reliability of the model was examined using XAI, and it was found that time series of rescue factors were important in predictions. On the other hand, the accuracy decreased when the created AI model was applied to other beaches. It was thought to be caused by differences in the natural environment such as waves and wind.","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125397967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BASIC CHARACTERISTICS OF THE BIODEGRADATION OF THE ANIONIC SURFACTANT ALKYL ETHER SULFATE IN SOIL 阴离子表面活性剂烷基醚硫酸盐在土壤中生物降解的基本特性
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.77.2_i_607
R. Naito, Yoshihiro B. Akiyama, Y. Hagino, I. Arai, Akira Tamura, Tomonari Okada
{"title":"BASIC CHARACTERISTICS OF THE BIODEGRADATION OF THE ANIONIC SURFACTANT ALKYL ETHER SULFATE IN SOIL","authors":"R. Naito, Yoshihiro B. Akiyama, Y. Hagino, I. Arai, Akira Tamura, Tomonari Okada","doi":"10.2208/jscejoe.77.2_i_607","DOIUrl":"https://doi.org/10.2208/jscejoe.77.2_i_607","url":null,"abstract":"","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124356685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NUMERICAL SIMULATIONS ON THE INFLUENCE OF THE LONG-TERM FLUCTUATIN OF SEA LEVEL DEPARTURE ON SAND WAVES IN THE KANMON WATERWAY 干门航道海平面离差长期波动对沙波影响的数值模拟
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.75.i_665
S. Yamagata, Shouya Orishikise, Masaru Yamashiro, Y. Nakagawa, N. Hashimoto, Yoshikuni Matsunobu, H. Igata
{"title":"NUMERICAL SIMULATIONS ON THE INFLUENCE OF THE LONG-TERM FLUCTUATIN OF SEA LEVEL DEPARTURE ON SAND WAVES IN THE KANMON WATERWAY","authors":"S. Yamagata, Shouya Orishikise, Masaru Yamashiro, Y. Nakagawa, N. Hashimoto, Yoshikuni Matsunobu, H. Igata","doi":"10.2208/jscejoe.75.i_665","DOIUrl":"https://doi.org/10.2208/jscejoe.75.i_665","url":null,"abstract":"","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114670006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A CONSIDERATION ON STATISTICAL PROCESSING OF TIME SERIES SAMPLES 关于时间序列样本统计处理的思考
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.75.i_295
M. Yamaguchi, Yoshihiro Utsunomiya, Kunimitsu Inouchi, Hirokazu Nonaka, M. Hino, Yoshio Hatada
{"title":"A CONSIDERATION ON STATISTICAL PROCESSING OF TIME SERIES SAMPLES","authors":"M. Yamaguchi, Yoshihiro Utsunomiya, Kunimitsu Inouchi, Hirokazu Nonaka, M. Hino, Yoshio Hatada","doi":"10.2208/jscejoe.75.i_295","DOIUrl":"https://doi.org/10.2208/jscejoe.75.i_295","url":null,"abstract":"","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117201183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
REDUCTION OF CAISSON EDGE PRESSURE IN COMPOSITE-TYPE BREAKWATER REINFORCED BY EMBANKMENT 堤防加固复合型防波堤沉箱边压的降低
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.75.i_415
Hidenori Takahashi, Shin Kanbara, Gengo Fukuo, Sanae Yamaya
{"title":"REDUCTION OF CAISSON EDGE PRESSURE IN COMPOSITE-TYPE BREAKWATER REINFORCED BY EMBANKMENT","authors":"Hidenori Takahashi, Shin Kanbara, Gengo Fukuo, Sanae Yamaya","doi":"10.2208/jscejoe.75.i_415","DOIUrl":"https://doi.org/10.2208/jscejoe.75.i_415","url":null,"abstract":"","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127229825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BEACH EROSION AT FUTTSU CUSPATE FORELAND DUE TO DISRUPTION IN LONGSHORE SAND TRANSPORT 由于海岸沙质运输的中断，富津角状前陆的海滩侵蚀
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.75.i_605
Yasuhito Noshi, T. Uda, A. Date, Genya Meno, A. Kobayashi
{"title":"BEACH EROSION AT FUTTSU CUSPATE FORELAND DUE TO DISRUPTION IN LONGSHORE SAND TRANSPORT","authors":"Yasuhito Noshi, T. Uda, A. Date, Genya Meno, A. Kobayashi","doi":"10.2208/jscejoe.75.i_605","DOIUrl":"https://doi.org/10.2208/jscejoe.75.i_605","url":null,"abstract":"of as the change analysis using past photographs. When the volume change of the beach was the in the foreshore area between and 2018, and was by the characteristic height of beach changes of 3.1 m, eastward longshore sand transport on the north coast of the cuspate foreland was evaluated to be 1,160 m 3 /yr, assuming that sand supply from the south side was entirely disrupted. Sandy beach has been disappearing owing to the imbalance in longshore sand at Futtsu cuspate foreland.","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123760040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ANALYTICAL STUDY FOR FLOWABILITY OF STEEL SLAG-DREDGED SOIL MIXTURES 钢渣-疏浚土混合料流动性分析研究
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.77.2_i_439
Akashi Yuzo, Yousuke Yamagoshi, I. Fujii, T. Katsumi
{"title":"ANALYTICAL STUDY FOR FLOWABILITY OF STEEL SLAG-DREDGED SOIL MIXTURES","authors":"Akashi Yuzo, Yousuke Yamagoshi, I. Fujii, T. Katsumi","doi":"10.2208/jscejoe.77.2_i_439","DOIUrl":"https://doi.org/10.2208/jscejoe.77.2_i_439","url":null,"abstract":"","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123760045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A STUDY ON THE EFFECTIVENESS OF THE INTRODUCTION OF AUTOMATIC MOORING DEVICES AT TSURUGA PORT 鹤贺港引进自动系泊装置的有效性研究
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.77.2_i_631
T. Oshima, H. Iga, Y. Izumida, Jyunichi Shimoda, Jyunichi Tanaka, Atsuhiro Tadokoro, Takayuki Oie, Takeshi Takahashi
{"title":"A STUDY ON THE EFFECTIVENESS OF THE INTRODUCTION OF AUTOMATIC MOORING DEVICES AT TSURUGA PORT","authors":"T. Oshima, H. Iga, Y. Izumida, Jyunichi Shimoda, Jyunichi Tanaka, Atsuhiro Tadokoro, Takayuki Oie, Takeshi Takahashi","doi":"10.2208/jscejoe.77.2_i_631","DOIUrl":"https://doi.org/10.2208/jscejoe.77.2_i_631","url":null,"abstract":"","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125356301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EXPERIMENTAL STUDY ON ENVIRONMENTAL IMPACT OF CaO-IMPROVED SOIL UNDER EARLY CONSTRUCTIN 早期施工中cao改良土对环境影响的试验研究
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.75.i_905
Michio Gomyo
{"title":"EXPERIMENTAL STUDY ON ENVIRONMENTAL IMPACT OF CaO-IMPROVED SOIL UNDER EARLY CONSTRUCTIN","authors":"Michio Gomyo","doi":"10.2208/jscejoe.75.i_905","DOIUrl":"https://doi.org/10.2208/jscejoe.75.i_905","url":null,"abstract":"","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126804997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BEACH EROSION AND TSUNAMI COUNTERMEASURE DOWNCOAST OF ARTIFICIAL HEADLAND NO. 12 ON HORIKAWA BEACH ON KUJUKURI COAST 人工海岬的海岸侵蚀及海啸对策。在堀堀海岸的堀川海滩上
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejoe.75.i_647
T. Uda, A. Kobayashi, T. Yokota
{"title":"BEACH EROSION AND TSUNAMI COUNTERMEASURE DOWNCOAST OF ARTIFICIAL HEADLAND NO. 12 ON HORIKAWA BEACH ON KUJUKURI COAST","authors":"T. Uda, A. Kobayashi, T. Yokota","doi":"10.2208/jscejoe.75.i_647","DOIUrl":"https://doi.org/10.2208/jscejoe.75.i_647","url":null,"abstract":"The relationship between countermeasures against beach erosion and tsunami was investigated, tak-ing the area around the artificial headland No.12 on Horikawa Beach located in the north part of the Kujukuri coast as an example. On this beach, southwestward longshore sand transport prevails and HLs have been constructed from upcoast, resulting in the expansion of the eroded area ． Also, sand dune with 6 m height has been preserved as a measure against tsunami on this beach, but such sand dune has been eroded while losing its effect. This situation has been investigated by the comparison of aerial photo-graphs and field observation. Urgent measure against beach erosion should be taken so as for the effect of sand dune against tsunami to be maintained.","PeriodicalId":387947,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116112867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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