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Underwater Work最新文献

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Diving as a Scientist: Training, Recognition, Occupation - The “Science Diver” Project 作为科学家的潜水:训练、认可、职业——“科学潜水员”项目
Underwater Work Pub Date : 2020-11-30 DOI: 10.5772/intechopen.94601
Alexandros Tourtas, Kimon D. Papadimitriou, E. Karadimou, R. O. Schill
{"title":"Diving as a Scientist: Training, Recognition, Occupation - The “Science Diver” Project","authors":"Alexandros Tourtas, Kimon D. Papadimitriou, E. Karadimou, R. O. Schill","doi":"10.5772/intechopen.94601","DOIUrl":"https://doi.org/10.5772/intechopen.94601","url":null,"abstract":"Conducting scientific work underwater is a challenging endeavor. From collecting samples to protecting underwater cultural heritage sites scientific divers need to address issues concerning scientific methodology, diving safety, professional acknowledgement, training, legal implications etc. All of these matters are handled in different ways depending on factors like region, organizations involved, legal framework, diving philosophy etc. producing a diverse framework on scientific diving as a distinct type of underwater work. The ScienceDIVER project’s main objective is to study and analyze this fragmented landscape, in order to provide insight and suggestions towards a commonly accepted framework that will promote scientific diving as a means of forwarding knowledge both within the scientific community and its interaction with the public.","PeriodicalId":322533,"journal":{"name":"Underwater Work","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124316121","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: 4
Cross-Correlation-Based Fisheries Stock Assessment Technique: Utilization of Standard Deviation of Cross-Correlation Function as Estimation Parameter with Four Acoustic Sensors 基于互相关的渔业资源评估技术:利用互相关函数的标准差作为四声传感器估计参数
Underwater Work Pub Date : 2020-07-13 DOI: 10.5772/intechopen.93240
Shaik Asif Hossain, M. Hossen
{"title":"Cross-Correlation-Based Fisheries Stock Assessment Technique: Utilization of Standard Deviation of Cross-Correlation Function as Estimation Parameter with Four Acoustic Sensors","authors":"Shaik Asif Hossain, M. Hossen","doi":"10.5772/intechopen.93240","DOIUrl":"https://doi.org/10.5772/intechopen.93240","url":null,"abstract":"In the past, cross-correlation-based fisheries stock assessment technique utilized the mean and the ratio of standard deviation to the mean of cross-correlation function (CCF) as estimation parameter. However, in this paper, we have utilized only standard deviation of CCF as estimation parameter to estimate the population size. We utilized four acoustic sensors and considered chirp sound which is commonly generated by damselfish (Dascyllus aruanus), humpback whales (Megaptera novaeangliae), dugongs (Dugong dugon), etc., species to accomplish the simulations. We found that a robust estimation can be obtained using standard deviation of CCF as estimation parameter even when the distances between acoustic sensors are small.","PeriodicalId":322533,"journal":{"name":"Underwater Work","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126181170","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
Progressive Underwater Exploration with a Corridor-Based Navigation System 基于走廊导航系统的渐进式水下探测
Underwater Work Pub Date : 2020-06-18 DOI: 10.5772/intechopen.90934
M. Jordan
{"title":"Progressive Underwater Exploration with a Corridor-Based Navigation System","authors":"M. Jordan","doi":"10.5772/intechopen.90934","DOIUrl":"https://doi.org/10.5772/intechopen.90934","url":null,"abstract":"The present work focuses on the exploration of underwater environments by means of autonomous submarines like AUVs using vision-based navigation. An approach called Corridor SLAM (C-SLAM) was developed for this purpose. It implements a global exploration strategy that consists of first creating a trunk corridor on the seabed and then branching as far as possible in different directions to increase the explored region. The system guarantees the safe return of the vehicle to the starting point by taking into account a metric of the corridor lengths that are related to their energy autonomy. Experimental trials in a basin with underwater scenarios demonstrated the feasibility of the approach.","PeriodicalId":322533,"journal":{"name":"Underwater Work","volume":"41 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113934021","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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