Results 111 to 120 of about 225,239 (334)

Methods for separating the noise produced by the wheels and track during a train pass-by

open access: yesRailway Engineering Science
Rolling noise is produced by vibration of the wheels and track, induced by their combined surface roughness. It is important to know the relative contributions of the different sources, as this affects noise control strategies as well as acceptance ...
David Thompson   +6 more
doaj   +1 more source

Autonomous Navigation for Autonomous Underwater Vehicles Based on Information Filters and Active Sensing

open access: yesSensors, 2011
This paper addresses an autonomous navigation method for the autonomous underwater vehicle (AUV) C-Ranger applying information-filter-based simultaneous localization and mapping (SLAM), and its sea trial experiments in Tuandao Bay (Shangdong Province, P ...
Tianhong Yan   +5 more
doaj   +1 more source

System locates randomly placed remote objects [PDF]

open access: yes, 1966
System to locate objects submerged underwater uses active/passive sonar techniques in which a transmitter is attached to the object to be recovered and a receiver is used for search.
Lovelady, R. W., Mc Fall, J. C., Jr.
core   +1 more source

STREETS AS STAGES: Traffic Enforcement and the Competition for Cultural Growth in China

open access: yesInternational Journal of Urban and Regional Research, EarlyView.
ABSTRACT In keeping with China’s desire to build soft power to parallel its economic growth, the policing of city streets has moved to the forefront as a mechanism for moral regulation and improving urban prestige. Under pressure to civilize their citizenry, many Chinese cities have become entrepreneurial cities within a type of cultural growth ...
Gregory Fayard
wiley   +1 more source

Pseudoangiomatous stromal hyperplasia: Presentation and management – a clinical perspective

open access: yesSouth African Journal of Radiology, 2018
Pseudoangiomatous stromal hyperplasia (PASH) is a benign breast condition of collagen proliferation. In this article, four cases are presented in series to illustrate the varying clinical presentations of PASH at mammography and sonography, as well as ...
Pamela Smilg
doaj   +1 more source

Combining morphological and molecular data to study past foraminiferal communities from a temperate coastal sediment core

open access: yesBoreas, EarlyView.
This paper presents the results of a dual approach for assessing fossil benthic foraminiferal communities using both traditional morphology‐based analyses and sedimentary ancient DNA (sedaDNA) metabarcoding. The main objectives are to test the feasibility of sedaDNA analyses to assess foraminiferal biodiversity in temperate shelf sediments (Le Croisic,
Meryem Mojtahid   +13 more
wiley   +1 more source

Addams Crater, Venus, Venus: outflow analogous with a submarine debris flow? [PDF]

open access: yes, 2005
The extraordinary outflow length and morphology of Addams crater deposits are compared with the Saharan submarine debris flow off Northwest Africa. Vapor cloud modelling and comparison of sonar data with radar images suggest a possible similar origin for
Petford, Nick, Purdie, P.
core  

Object Detection in Sonar Images

open access: yes, 2020
The scope of the project described in this paper is the development of a generalized underwater object detection solution based on Automated Machine Learning (AutoML) principles.
D. Karimanzira   +3 more
semanticscholar   +1 more source

Chasing Fish: 130 Years of Innovation, Displacement and Depletion in Scottish Fisheries

open access: yesFish and Fisheries, EarlyView.
ABSTRACT Rebuilding the depleted fisheries of the 21st century requires an understanding of past drivers of their decline. Despite Scotland's central role in the commercial exploitation of North Sea fisheries for over a century, associations between technological innovations, regulatory introductions and fishery landings have not previously been ...
Zoe F. J. Heard   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy