Results 1 to 10 of about 43,128 (219)

Feasibility of Portable Microwave Imaging Device for Breast Cancer Detection

open access: yesDiagnostics, 2021
Purpose: Microwave radar-based breast imaging technology utilizes the principle of radar, in which radio waves reflect at the interface between target and normal tissues, which have different permittivities. This study aims to investigate the feasibility
Mio Adachi   +6 more
doaj   +1 more source

High-Resolution Acoustic Cameras Provide Direct and Efficient Assessments of Large Demersal Fish Populations in Extremely Turbid Waters

open access: yesApplied Sciences, 2021
Monitoring fish species populations in very turbid environments is challenging. Acoustic cameras allow work in very poor visibility but are often deployed as a fixed observation point, limiting the scope of the survey. A BlueView P900-130 acoustic camera
Céline Artero   +7 more
doaj   +1 more source

Bird Occupancy of a Neotropical Forest Fragment Is Mostly Stable over 17 Years but Influenced by Forest Age

open access: yesDiversity, 2021
The effects of forest degradation, fragmentation, and climate change occur over long time periods, yet relatively few data are available to evaluate the long-term effects of these disturbances on tropical species occurrence.
Marconi Campos-Cerqueira   +3 more
doaj   +1 more source

Roadside Car Surveys: Methodological Constraints and Solutions for Estimating Parrot Abundances across the World

open access: yesDiversity, 2021
Parrots stand out among birds because of their poor conservation status and the lack of available information on their population sizes and trends. Estimating parrot abundance is complicated by the high mobility, gregariousness, patchy distributions, and
José L. Tella   +14 more
doaj   +1 more source

Detectability of Timed Discrete Event Systems

open access: yesIEEE Access, 2023
This paper introduces T-detectability, which extends detectability to timed discrete event systems within the context of communication networks. We propose network T-detectability to address the challenges posed by observation delays and losses in ...
Chengshi Miao
doaj   +1 more source

The potential and practice of arboreal camera trapping

open access: yesMethods in Ecology and Evolution, 2021
Arboreal camera trapping is a burgeoning method providing a novel and effective technique to answer research questions across a variety of ecosystems, and it has the capacity to improve our understanding of a wide range of taxa.
Jennifer F. Moore   +16 more
doaj   +1 more source

Non-Cooperative Target Recognition by Means of Singular Value Decomposition Applied to Radar High Resolution Range Profiles

open access: yesSensors, 2014
Radar high resolution range profiles are widely used among the target recognition community for the detection and identification of flying targets. In this paper, singular value decomposition is applied to extract the relevant information and to model ...
Patricia López-Rodríguez   +3 more
doaj   +1 more source

Evaluation of camera placement for detection of free‐ranging carnivores; implications for assessing population changes

open access: yesEcological Solutions and Evidence, 2020
1. Introduced carnivores are often cryptic, making it difficult to quantify their presence in ecosystems, and assess how this varies in relation to management interventions. Survey design should thus seek to improve detectability and maximize statistical
Hayley M. Geyle   +8 more
doaj   +1 more source

Seeking efficiency with carnivore survey methods: A case study with elusive martens

open access: yesWildlife Society Bulletin, 2018
Obtaining reliable information on species distributions is often the first step in conservation. Distribution information can be used to focus survey efforts to estimate population size and examine drivers of occupancy or other population parameters.
Katie M. Moriarty   +3 more
doaj   +1 more source

Improved Ultrasonic Dead Zone Detectability of Work Rolls Using a Convolutional Neural Network

open access: yesApplied Sciences, 2022
Rolled carbon steel sheets used in industrial and construction sites are formed by passing metal stock between two rotating rolls using a rolling mill, and the work roll is an essential part of the rolling mill.
Yun-Taek Yeom   +4 more
doaj   +1 more source

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