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Sensors, Volume 19, Issue 5

March-1 2019 - 281 articles

Cover Story: The study presents a novel approach in the application of UAV imaging for the conjoint assessment of the snow depth and winter leaf area index (LAI). LAI assessment, crucial for the correct interpretation of the snow depth distribution in forested areas, was based on downward-looking UAV images taken in the forest regime. To identify the canopy characteristics from downward-looking UAV images, the snow background was used instead of the sky fraction. Field surveying of snow depth and LAI were conducted as a reference to UAV imaging. The study covered sites with a varying structure and the state of the Norway spruce forest cover, ranging from healthy and disturbed forest to a meadow area, over a winter season. Since the snow depth and the LAI parameters are essential for snowpack studies, this combined method will be of great value to simplifying snow depth and the LAI assessment of snow dynamics. View this paper.
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Articles (281)

  • Article
  • Open Access
3,631 Views
7 Pages

Effect of Lactamase Inhibitors on the Biosensor Penp during the Measurement of Lactam Antibiotics Concentration

  • Dagoberto Soto,
  • Camila Silva,
  • Cristian Ugalde,
  • Kwok-Yin Wong,
  • Yun-Chung Leung,
  • Lok-Yan So and
  • Max Andresen

12 March 2019

PenP is a fluorescent biosensor of lactam antibiotics (LA). It is structurally derived from the mutant lactamase TEM-1 comprising the substitution E166C, where fluorescein is covalently linked to cysteine. The presence of LA in the medium produces a...

  • Article
  • Open Access
55 Citations
10,739 Views
14 Pages

Bluetooth Mesh Energy Consumption: A Model

  • Seyed Mahdi Darroudi,
  • Raül Caldera-Sànchez and
  • Carles Gomez

12 March 2019

The recent publication of the Bluetooth Mesh standard is a remarkable milestone in the evolution of Bluetooth Low Energy (BLE). As a new technology in the Internet of Things (IoT) market, it is crucial to investigate the performance of Bluetooth Mesh...

  • Article
  • Open Access
12 Citations
5,144 Views
19 Pages

12 March 2019

In this paper we present enhanced routing protocol for low-lower and lossy networks (ERPL), a reduced overhead routing protocol for short-range low-power and lossy wireless networks, based on RPL. ERPL enhances peer-to-peer (P2P) route construction a...

  • Article
  • Open Access
15 Citations
4,279 Views
18 Pages

Portable Sensors Add Reliable Kinematic Measures to the Assessment of Upper Extremity Function

  • Fredrik Öhberg,
  • Tomas Bäcklund,
  • Nina Sundström and
  • Helena Grip

12 March 2019

Ordinal scales with low resolution are used to assess arm function in clinic. These scales may be improved by adding objective kinematic measures. The aim was to analyze within-subject, inter-rater and overall reliability (i.e., including within-subj...

  • Article
  • Open Access
6 Citations
4,679 Views
26 Pages

12 March 2019

Remote monitoring applications in urban vehicular ad-hoc networks (VANETs) enable authorities to monitor data related to various activities of a moving vehicle from a static infrastructure. However, urban environment constraints along with various ch...

  • Article
  • Open Access
11 Citations
4,279 Views
11 Pages

12 March 2019

A robust 3-D GPR dataset provides interpreters with a variety of methods for extracting important information at buried archaeological sites. An iterative approach that uses reflection profile analysis, amplitude slice-mapping, and often both in conj...

  • Article
  • Open Access
7 Citations
4,452 Views
11 Pages

12 March 2019

The NASA’s Earth Polychromatic Imaging Camera (EPIC) on board the Deep Space Climate Observatory (DSCOVR) satellite has been making multiple observations of the entire sunlit Earth in a given day from the Sun-Earth Largangian L1 point since the...

  • Article
  • Open Access
16 Citations
6,741 Views
13 Pages

A Microscale Linear Phased-Array Ultrasonic Transducer Based on PZT Ceramics

  • Xue-Jiao Jiang,
  • Meng-Wei Liu,
  • Fang-Fang Shi,
  • Wen Wang,
  • Xian-Mei Wu and
  • Jia-Yi Chen

12 March 2019

In this paper, a microscale high-frequency ultrasonic transducer was prepared by combining traditional planar ultrasonic phased-array technology and micro processing technology. The piezoelectric ceramic material PZT was used as the functional materi...

  • Article
  • Open Access
9 Citations
4,460 Views
21 Pages

12 March 2019

With the revolutionary development of cloud computing and internet of things, the integration and utilization of “big data” resources is a hot topic of the artificial intelligence research. Face recognition technology information has the...

  • Article
  • Open Access
22 Citations
5,445 Views
20 Pages

12 March 2019

Downscaling microwave soil moisture (SM) with optical/thermal remote sensing data has considerable application potential. Spatial correlations between SM and land surface temperature (LST) or LST-derived SM indexes (SMIs) are vital to the current opt...

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Sensors - ISSN 1424-8220