{"title":"Impact of underwater bandwidth and SNR on cross-correlation-based population estimation technique of fish and mammals","authors":"Shaik Asif Hossain, M. Hossen","doi":"10.3723/UT.36.019","DOIUrl":"https://doi.org/10.3723/UT.36.019","url":null,"abstract":"","PeriodicalId":44271,"journal":{"name":"UNDERWATER TECHNOLOGY","volume":"30 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91241834","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}
{"title":"A view from the shallow end","authors":"","doi":"10.3723/ut.36.017","DOIUrl":"https://doi.org/10.3723/ut.36.017","url":null,"abstract":"","PeriodicalId":44271,"journal":{"name":"UNDERWATER TECHNOLOGY","volume":"8 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77172213","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}
Wilmer Ariza Ramirez, Z. Leong, H. Nguyen, S. Jayasinghe
{"title":"Position estimation for underwater vehicles using unscented Kalman filter with Gaussian process prediction","authors":"Wilmer Ariza Ramirez, Z. Leong, H. Nguyen, S. Jayasinghe","doi":"10.3723/UT.36.029","DOIUrl":"https://doi.org/10.3723/UT.36.029","url":null,"abstract":"","PeriodicalId":44271,"journal":{"name":"UNDERWATER TECHNOLOGY","volume":"388 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86822273","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}
Pub Date : 2019-03-29DOI: 10.3723/UT.36.003UNDERWATER
J. Collings, S. Foster, A. Hazeltine, A. Psarrou, J. Sparks, J. Tan
{"title":"The Design of an Offshore Aquaculture Support Vessel","authors":"J. Collings, S. Foster, A. Hazeltine, A. Psarrou, J. Sparks, J. Tan","doi":"10.3723/UT.36.003UNDERWATER","DOIUrl":"https://doi.org/10.3723/UT.36.003UNDERWATER","url":null,"abstract":"","PeriodicalId":44271,"journal":{"name":"UNDERWATER TECHNOLOGY","volume":"50 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76501020","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}
T. Gambin, P. Drap, B. Cheminsky, K. Hyttinen, G. Kozak
A shipwreck was discovered in deep-water during a systematic side-scan sonar survey conducted in 2007 by Malta’s heritage authorities and the University of Malta. Located off the coast of the island of Gozo, Malta, this site was the subject of a series of further in-depth studies that spanned over 10 years. Throughout this period, a number of different technologies were used to explore, record and study the site. This paper provides an overall description, analysis and evaluation of the various technologies and methodologies used to investigate this site.
{"title":"Exploring the Phoenician shipwreck off Xlendi bay, Gozo. A report on methodologies used for the study of a deep-water site","authors":"T. Gambin, P. Drap, B. Cheminsky, K. Hyttinen, G. Kozak","doi":"10.3723/UT.35.071","DOIUrl":"https://doi.org/10.3723/UT.35.071","url":null,"abstract":"A shipwreck was discovered in deep-water during a systematic side-scan sonar survey conducted in 2007 by Malta’s heritage authorities and the University of Malta. Located off the coast of the island of Gozo, Malta, this site was the subject of a series of further in-depth studies that spanned over 10 years. Throughout this period, a number of different technologies were used to explore, record and study the site. This paper provides an overall description, analysis and evaluation of the various technologies and methodologies used to investigate this site.","PeriodicalId":44271,"journal":{"name":"UNDERWATER TECHNOLOGY","volume":"20 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77732471","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}
The functioning of diving decompression computers is based on predictive models that are made operational through algorithms. Relatively simple models can be constructed to manage diving decompression obligations with a high degree of confidence, as long as the dive profiles fall within the model’s ‘range of applicability’. The same degree of confidence cannot be assumed where dive profiles are outside of that range – for instance by diving deeper, or for longer or more frequently than what had been considered in the development of the model, or because of individual physiological particularities. A common method to deal with this is to increase the level of conservatism of the model by reducing inert gas load. Depending on the dive computer, this is achieved by allowing the diver to set predefined ‘personal levels’ or through ‘gradient factors’, which is a more transparent method of obtaining a reduced inert gas load at the end of a dive. This paper outlines models and algorithms in general, and then discusses gradient factors in further
{"title":"Dive computer decompression models and algorithms: philosophical and practical views","authors":"S. Angelini","doi":"10.3723/UT.35.051","DOIUrl":"https://doi.org/10.3723/UT.35.051","url":null,"abstract":"The functioning of diving decompression computers is based on predictive models that are made operational through algorithms. Relatively simple models can be constructed to manage diving decompression obligations with a high degree of confidence, as long as the dive profiles fall within the model’s ‘range of applicability’. The same degree of confidence cannot be assumed where dive profiles are outside of that range – for instance by diving deeper, or for longer or more frequently than what had been considered in the development of the model, or because of individual physiological particularities. A common method to deal with this is to increase the level of conservatism of the model by reducing inert gas load. Depending on the dive computer, this is achieved by allowing the diver to set predefined ‘personal levels’ or through ‘gradient factors’, which is a more transparent method of obtaining a reduced inert gas load at the end of a dive. This paper outlines models and algorithms in general, and then discusses gradient factors in further","PeriodicalId":44271,"journal":{"name":"UNDERWATER TECHNOLOGY","volume":"39 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85516461","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}
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