Results 31 to 40 of about 326 (101)

A Novel ViT Model with Wavelet Convolution and SLAttention Modules for Underwater Acoustic Target Recognition

Journal of Marine Science and Engineering
Underwater acoustic target recognition (UATR) technology plays a significant role in marine exploration, resource development, and national defense security.
Haoran Guo, Biao Wang, Tao Fang, Biao Liu   +3 more
doaj   +2 more sources

Spectroscopic dataset of Hedione's derivatives gathered during process development [PDF]

Data in Brief, 2023
The dataset of spectroscopic analysis performed on starting materials, intermediates, and products relating to the synthesis of Hedione are hereby presented. The data were acquired in Durham university during the period between October 2020 and September
James S. Sharley, Guido Gambacorta, Ana María Collado Pérez, Estela Espinos Ferri, Amadeo Fernandez Miranda, Jorge Sanchez Quesada, Ian R. Baxendale   +6 more
doaj   +2 more sources

Cross-Domain Contrastive Learning-Based Few-Shot Underwater Acoustic Target Recognition

Journal of Marine Science and Engineering
Underwater Acoustic Target Recognition (UATR) plays a crucial role in underwater detection devices. However, due to the difficulty and high cost of collecting data in the underwater environment, UATR still faces the problem of small datasets.
Xiaodong Cui, Zhuofan He, Yangtao Xue, Keke Tang, Peican Zhu, Jing Han   +5 more
doaj   +2 more sources

Infrared Spectroscopy Applied to Materials Used as Thermal Insulation and Coatings

Journal of Aerospace Technology and Management, 2013
http://dx.doi.org/10.5028/jatm.v5i4.265 It is very important to control the characteristics of a polymer used in rubber compositions and paints in aerospace applications.
Natália Beck Sanches, Ricardo Pedro, Milton Faria Diniz, Elizabeth da Costa Mattos, Silvana Navarro Cassu, Rita de Cássia Lazzarini Dutra   +5 more
doaj   +3 more sources

Caracterização por FT-IR da superfície de borracha EPDM tratada via plasma por micro-ondas FT-IR characterization of EPDM rubber surface treated by microwave plasma

Polímeros, 2012
A superfície de uma borracha de etileno-propileno-dieno (EPDM) vulcanizada foi modificada via plasma por microondas, com gases Ar, Ar/O2, N2/O2 e N2/H2, tendo como objetivo melhorar as propriedades adesivas da superfície.
Renata P. dos Santos, Mauro S. de O. Junior, Elizabeth da C. Mattos, Milton F. Diniz, Rita de C. L. Dutra   +4 more
doaj   +4 more sources

Leveraging Prior Knowledge in Semi-Supervised Learning for Precise Target Recognition

Remote Sensing
Underwater acoustic target recognition (UATR) is challenged by complex marine noise, scarce labeled data, and inadequate multi-scale feature extraction in conventional methods.
Guohao Xie, Zhe Chen, Yaan Li, Mingsong Chen, Feng Chen, Yuxin Zhang, Hongyan Jiang, Hongbing Qiu   +7 more
doaj   +2 more sources

Determination of Polychloroprene Content in Rubber Blend Containing Ethylene Propylene Diene Monomer by Infrared Techniques [PDF]

Journal of Aerospace Technology and Management, 2021
Ethylene propylene diene monomer rubber is used as flexible thermal protection for rocket engines, as well as in blends with polychloroprene, which can be applied in the aeronautical sector, and with great potential in the defense sector.
Paulo Santos Rigoli, Alexandra Helena de Barros, Rachel Farias Magalhães, Lidia Mattos Silva Murakami, Alexandre Estevão Carrara, Jorge Carlos Narciso Dutra, Elizabeth da Costa Mattos, Rita de Cássia Lazzarini Dutra   +7 more
doaj   +3 more sources

Urethane-Acrylate/Aramid Nanocomposites Based on Graphenic Materials. A Comparative Study of Their Mechanical Properties [PDF]

, 2020
Urethane-acrylate thermoset resins (UATR) are a new type of polymeric matrix that have recently made a strong breakthrough in the composites sector.
Gerardo León, Israel Gago, Beatriz Miguel, Manuel del Río   +3 more
core   +2 more sources

Entre la movilización y la negociación: FAA y UATRE frente al agronegocio

Avances del Cesor, 2021
La configuración del agronegocio no estuvo exenta de conflictos que estructuraron formas de organización y demandas frente al avance y consolidación del nuevo paradigma productivo. El objetivo del presente artículo es historizar cómo emergió la conflictividad en el mundo rural y de qué manera la misma fue procesada y canalizada por las organizaciones ...
Carini, Gabriel Fernando, Gerbaldo, Juan Carlos   +1 more
openaire   +5 more sources

Cemaran Mikroplastik pada Ikan Pindang dan Potensi Bahayanya terhadap Kesehatan Manusia, Studi Kasus di Bogor

Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan, 2021
Tingginya akumulasi sampah plastik di perairan Indonesia dapat meningkatkan potensi cemaran mikroplastik. Ikan dan garam merupakan bahan baku utama pembuatan ikan pindang yang keduanya berpotensi membawa berbagai bahan cemaran, termasuk mikroplastik ...
Gunawan Gunawan, Hefni Effendi, Endang Warsiki   +2 more
doaj   +1 more source