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253 Results Found

  • Article
  • Open Access
10 Citations
3,513 Views
22 Pages

26 January 2021

This study considers the problem of distinguishing between process and sensor faults in nonlinear chemical processes. An integrated fault diagnosis framework is proposed to distinguish chemical process sensor faults from process faults. The key idea...

  • Article
  • Open Access
815 Views
18 Pages

20 April 2025

This paper introduces a dual-strategy model based on temporal transformation and fuzzy theory, and designs a partitioned mining algorithm for periodic frequent patterns in large-scale event data (3P-TFT). The model reconstructs original event data th...

  • Article
  • Open Access
2 Citations
2,277 Views
29 Pages

7 November 2022

Rail expresses play a vital role in intracity and intercity transportations. For accommodating multi-source passenger traffic with different travel demand, while optimizing the energy consumption, we propose a multi-cycle train timetable optimization...

  • Article
  • Open Access
1,942 Views
28 Pages

An Iterative Shifting Disaggregation Algorithm for Multi-Source, Irregularly Sampled, and Overlapped Time Series

  • Colin O. Quinn,
  • Ronald H. Brown,
  • George F. Corliss and
  • Richard J. Povinelli

1 February 2025

Accurate time series forecasting often requires higher temporal resolution than that provided by available data, such as when daily forecasts are needed from monthly data. Existing temporal disaggregation techniques, which typically handle only singl...

  • Article
  • Open Access
18 Citations
2,994 Views
25 Pages

1 July 2023

We propose an optimized Clockwork Recurrent Neural Network (CW-RNN) based approach to address temporal dynamics and nonlinearity in network security situations, improving prediction accuracy and real-time performance. By leveraging the clock-cycle RN...

  • Article
  • Open Access
7 Citations
2,699 Views
19 Pages

Determining Effective Temporal Windows for Rapeseed Detection Using Sentinel-1 Time Series and Machine Learning Algorithms

  • Saeideh Maleki,
  • Nicolas Baghdadi,
  • Sami Najem,
  • Cassio Fraga Dantas,
  • Hassan Bazzi and
  • Dino Ienco

31 January 2024

This study investigates the potential of Sentinel-1 (S1) multi-temporal data for the early-season mapping of the rapeseed crop. Additionally, we explore the effectiveness of limiting the portion of a considered time series to map rapeseed fields. To...

  • Article
  • Open Access
64 Citations
8,732 Views
24 Pages

8 December 2018

Two of the main remote sensing data resources for forest fire detection have significant drawbacks: geostationary Earth Observation (EO) satellites have high temporal resolution but low spatial resolution, whereas Polar-orbiting systems have high spa...

  • Article
  • Open Access
1 Citations
2,777 Views
17 Pages

Task Allocation Algorithm for Heterogeneous UAV Swarm with Temporal Task Chains

  • Haixiao Liu,
  • Zhichao Shao,
  • Quanzhi Zhou,
  • Jianhua Tu and
  • Shuo Zhu

13 August 2025

In disaster relief operations, integrating disaster reconnaissance, material delivery, and effect evaluation into a temporal task chain can significantly reduce emergency response cycles and improve rescue efficiency. However, since multiple types of...

  • Feature Paper
  • Article
  • Open Access
3 Citations
2,321 Views
18 Pages

A Novel Cycle Slips Detection and Repair Method with AR Model of BDS-3 Dual-Frequency Signal in Severe Multipath Environments

  • Yipeng Ning,
  • Junye Cui,
  • Wenshuo Zhao,
  • Dashuai Chai,
  • Yingjun Sun,
  • Jianping Xing and
  • Shengli Wang

20 December 2022

High-level applications of geo-processing services generally lack accurate temporal and spatial information. BDS-3 provides high precision temporal and spatial reference for geoprocessing services, but their signal is prone to cycle slips in a severe...

  • Article
  • Open Access
2 Citations
3,354 Views
21 Pages

7 June 2023

Leaf Area Index (LAI) is one of the most important biophysical parameters of vegetation, and its dynamic changes can be used as a reflective indicator and differentiation basis of vegetation function. In this study, a VCA–MLC (Vertex Component...

  • Article
  • Open Access
60 Citations
7,817 Views
25 Pages

21 December 2016

Snow is a key element of the water and energy cycles and the knowledge of spatio-temporal distribution of snow depth and snow water equivalent (SWE) is fundamental for hydrological and climatological applications. SWE and snow depth estimates can be...

  • Article
  • Open Access
7 Citations
3,344 Views
20 Pages

4 July 2022

The distribution pattern and flux variation of POC in the continental shelf seas are essential for understanding the carbon cycle in marginal seas. The hydrodynamic environment and complicated estuarine processes in the East China Sea result in chall...

  • Article
  • Open Access
23 Citations
4,518 Views
13 Pages

Improving the Retrieval of Carbon-Based Phytoplankton Biomass from Satellite Ocean Colour Observations

  • Marco Bellacicco,
  • Jaime Pitarch,
  • Emanuele Organelli,
  • Victor Martinez-Vicente,
  • Gianluca Volpe and
  • Salvatore Marullo

6 November 2020

Phytoplankton is at the base of the marine food web and plays a fundamental role in the global carbon cycle. Ongoing climate change significantly impacts phytoplankton distribution in the ocean. Monitoring phytoplankton is crucial for a full understa...

  • Article
  • Open Access
1 Citations
2,543 Views
24 Pages

4 November 2022

In recent years, with the diversification of people’s modes of transportation, a large amount of traffic data is generated when people travel every day, and this data can help transportation mode detection to be of great use in a variety of app...

  • Article
  • Open Access
21 Citations
9,603 Views
31 Pages

Evaluation and Analysis of the Seasonal Cycle and Variability of the Trend from GOSAT Methane Retrievals

  • Ella Kivimäki,
  • Hannakaisa Lindqvist,
  • Janne Hakkarainen,
  • Marko Laine,
  • Ralf Sussmann,
  • Aki Tsuruta,
  • Rob Detmers,
  • Nicholas M. Deutscher,
  • Edward J. Dlugokencky and
  • Johanna Tamminen
  • + 13 authors

11 April 2019

Methane ( CH 4) is a potent greenhouse gas with a large temporal variability. To increase the spatial coverage, methane observations are increasingly made from satellites that retrieve the column-averaged dry air mole fraction of methane (XCH 4). T...

  • Article
  • Open Access
10 Citations
3,272 Views
12 Pages

17 November 2022

Real-time gait event detection (GED) using inertial sensors is important for applications such as remote gait assessments, intelligent assistive devices including microprocessor-based prostheses or exoskeletons, and gait training systems. GED algorit...

  • Article
  • Open Access
13 Citations
5,226 Views
20 Pages

5 September 2022

In recent years, with the development of science and technology, people have more and more choices for daily travel. However, assisting with various mobile intelligent services by transportation mode detection has become more urgent for the refinemen...

  • Article
  • Open Access
4,823 Views
23 Pages

19 October 2016

We assess the impact of traffic variations on energy consumption and devices lifetime in a core network. Specifically, we first define a model to control the spatial as well as the temporal variations of traffic. We generate different sets of traffic...

  • Feature Paper
  • Article
  • Open Access
105 Citations
18,953 Views
25 Pages

Detection and Monitoring of Forest Fires Using Himawari-8 Geostationary Satellite Data in South Korea

  • Eunna Jang,
  • Yoojin Kang,
  • Jungho Im,
  • Dong-Won Lee,
  • Jongmin Yoon and
  • Sang-Kyun Kim

30 January 2019

Geostationary satellite remote sensing systems are a useful tool for forest fire detection and monitoring because of their high temporal resolution over large areas. In this study, we propose a combined 3-step forest fire detection algorithm (i.e., t...

  • Article
  • Open Access
8 Citations
3,264 Views
23 Pages

ERTFM: An Effective Model to Fuse Chinese GF-1 and MODIS Reflectance Data for Terrestrial Latent Heat Flux Estimation

  • Lilin Zhang,
  • Yunjun Yao,
  • Xiangyi Bei,
  • Yufu Li,
  • Ke Shang,
  • Junming Yang,
  • Xiaozheng Guo,
  • Ruiyang Yu and
  • Zijing Xie

16 September 2021

Coarse spatial resolution sensors play a major role in capturing temporal variation, as satellite images that capture fine spatial scales have a relatively long revisit cycle. The trade-off between the revisit cycle and spatial resolution hinders the...

  • Article
  • Open Access
9 Citations
5,937 Views
18 Pages

New Algorithm for Rain Cell Identification and Tracking in Rainfall Event Analysis

  • Ting He,
  • Thomas Einfalt,
  • Jianxin Zhang,
  • Jiyao Hua and
  • Yang Cai

10 September 2019

This study proposes a new algorithm termed rain cell identification and tracking (RCIT) to identify and track rain cells from high resolution weather radar data. Previous algorithms have limitations when tracking non-consequent rain cells owing to th...

  • Article
  • Open Access
204 Citations
9,768 Views
23 Pages

Mapping Winter Crops in China with Multi-Source Satellite Imagery and Phenology-Based Algorithm

  • Haifeng Tian,
  • Ni Huang,
  • Zheng Niu,
  • Yuchu Qin,
  • Jie Pei and
  • Jian Wang

5 April 2019

Timely and accurate mapping of winter crop planting areas in China is important for food security assessment at a national level. Time-series of vegetation indices, such as the normalized difference vegetation index (NDVI), are widely used for crop m...

  • Article
  • Open Access
3 Citations
2,635 Views
19 Pages

14 October 2022

As a new type of vision sensor, the dynamic and active-pixel vision sensor (DAVIS) outputs image intensity and asynchronous event streams in the same pixel array. We present a novel visual odometry algorithm based on the DAVIS in this paper. The Harr...

  • Article
  • Open Access
846 Views
20 Pages

Estimation of Land Surface Evapotranspiration and Identification of Key Influencing Factors in the Zoige Forest–Grass Transition Zone

  • Xinzhu Lu,
  • Huaiyong Shao,
  • Yixi Kan,
  • Shibin Liu,
  • Chang Du,
  • Qiufang Shao,
  • Linsen Duan and
  • Huan Xiao

9 April 2025

Evapotranspiration (ET) is an important link between the water and energy cycles and directly determines the amount of available regional water resources. The Zoige forest–grass transition zone is a critical water conservation area in the upper...

  • Article
  • Open Access
2 Citations
1,996 Views
15 Pages

Addressing Concerns about Single Path Analysis in Business Cycle Turning Points: The Case of Learning Vector Quantization

  • David Enck,
  • Mario Beruvides,
  • Víctor G. Tercero-Gómez and
  • Alvaro E. Cordero-Franco

26 February 2024

Data-driven approaches in machine learning are increasingly applied in economic analysis, particularly for identifying business cycle (BC) turning points. However, temporal dependence in BCs is often overlooked, leading to what we term single path an...

  • Article
  • Open Access
15 Citations
6,125 Views
22 Pages

Generation of High Resolution Vegetation Productivity from a Downscaling Method

  • Tao Yu,
  • Rui Sun,
  • Zhiqiang Xiao,
  • Qiang Zhang,
  • Juanmin Wang and
  • Gang Liu

6 November 2018

Accurately estimating vegetation productivity is important in the research of terrestrial ecosystems, carbon cycles and climate change. Although several gross primary production (GPP) and net primary production (NPP) products have been generated and...

  • Article
  • Open Access
34 Citations
7,438 Views

11 January 2019

Estimating the net primary production (NPP) of vegetation is essential for eco-environment conservation and carbon cycle research. Remote sensing techniques, combined with algorithm models, have been proven to be promising methods for NPP estimation....

  • Feature Paper
  • Article
  • Open Access
50 Citations
7,677 Views
15 Pages

Estimation of Mental Distress from Photoplethysmography

  • Roberto Zangróniz,
  • Arturo Martínez-Rodrigo,
  • María T. López,
  • José Manuel Pastor and
  • Antonio Fernández-Caballero

5 January 2018

This paper introduces the design of a new wearable photoplethysmography (PPG) sensor and its assessment for mental distress estimation. In our design, a PPG sensor obtains blood volume information by means of an optical plethysmogram technique. A num...

  • Article
  • Open Access
1 Citations
2,475 Views
24 Pages

30 April 2022

Various cloud cover products have been developed over the past few decades, but their uncertainties have not been sufficiently assessed, especially at a regional scale, which is vital for the application of satellite products to climate studies. In t...

  • Feature Paper
  • Article
  • Open Access
28 Citations
4,988 Views
26 Pages

Climate Data Records of Vegetation Variables from Geostationary SEVIRI/MSG Data: Products, Algorithms and Applications

  • Francisco Javier García-Haro,
  • Fernando Camacho,
  • Beatriz Martínez,
  • Manuel Campos-Taberner,
  • Beatriz Fuster,
  • Jorge Sánchez-Zapero and
  • María Amparo Gilabert

9 September 2019

The scientific community requires long-term data records with well-characterized uncertainty and suitable for modeling terrestrial ecosystems and energy cycles at regional and global scales. This paper presents the methodology currently developed in...

  • Article
  • Open Access
4 Citations
1,672 Views
30 Pages

5 November 2024

This study introduces a global land cover clustering using an unsupervised algorithm, incorporating the novel step of filtering data to retain only temporally stable pixels before applying K-means clustering. Unlike previous approaches that did not a...

  • Article
  • Open Access
16 Citations
5,187 Views
20 Pages

9 December 2022

A phenotype is the composite of an observable expression of a genome for traits in a given environment. The trajectories of phenotypes computed from an image sequence and timing of important events in a plant’s life cycle can be viewed as tempo...

  • Article
  • Open Access
3 Citations
2,733 Views
17 Pages

9 June 2022

In this paper, we proposed a data-driven spatio-temporal deep learning (SDL) model, to simulate forward and reflected ultrasonic wave propagation in the 2D geometrical domain, by implementing the convolutional long short-term memory (ConvLSTM) algori...

  • Article
  • Open Access
8 Citations
4,120 Views
11 Pages

Arm-Stroke Descriptor Variability during 200-m Front Crawl Swimming

  • Matteo Cortesi,
  • Rocco Di Michele,
  • Silvia Fantozzi,
  • Sandro Bartolomei and
  • Giorgio Gatta

6 January 2021

The present study aimed to explore the variability of the arm-stroke temporal descriptors between and within laps during middle-distance swimming event using IMMUs. Eight male swimmers performed a 200-m maximum front-crawl in which the inter-lap and...

  • Article
  • Open Access
2 Citations
1,843 Views
21 Pages

Study of the Effect of Different Atmospheric Conditions on the Temporal Evolution of the Mixing Layer over Madrid during the Year 2020 by Means of Two Different Methods: Ceilometer Signals and the ECMWF-IFS Meteorological Model

  • Ruben Barragán,
  • Francisco Molero,
  • Pedro Salvador,
  • Mark R. Theobald,
  • Marta G. Vivanco,
  • Alejandro Rodríguez-Sánchez,
  • Victoria Gil,
  • Juan Luis Garrido,
  • Manuel Pujadas and
  • Begoña Artíñano

30 November 2023

Atmospheric aerosols are one of the main factors that contribute to poor air quality. These aerosols are mostly concentrated within the atmospheric boundary layer (ABL) and mixing layer (ML). The ABL extends from ground level to the lowest level of t...

  • Article
  • Open Access
51 Citations
10,144 Views
20 Pages

Global MODIS Fraction of Green Vegetation Cover for Monitoring Abrupt and Gradual Vegetation Changes

  • Federico Filipponi,
  • Emiliana Valentini,
  • Alessandra Nguyen Xuan,
  • Carlos A. Guerra,
  • Florian Wolf,
  • Martin Andrzejak and
  • Andrea Taramelli

23 April 2018

The presence and distribution of green vegetation cover in the biosphere are of paramount importance in investigating cause-effect phenomena at the land/atmosphere interface, estimating primary production rates as part of global carbon and water cycl...

  • Article
  • Open Access
44 Citations
14,791 Views
20 Pages

Determining Rice Growth Stage with X-Band SAR: A Metamodel Based Inversion

  • Onur Yuzugullu,
  • Stefano Marelli,
  • Esra Erten,
  • Bruno Sudret and
  • Irena Hajnsek

10 May 2017

Rice crops are important in the global food economy, and new techniques are being implemented for their effective management. These techniques rely mainly on the changes in the phenological cycle, which can be investigated by remote sensing systems....

  • Article
  • Open Access
9 Citations
2,374 Views
12 Pages

Mobile Spatiotemporal Gait Segmentation Using an Ear-Worn Motion Sensor and Deep Learning

  • Julian Decker,
  • Lukas Boborzi,
  • Roman Schniepp,
  • Klaus Jahn and
  • Max Wuehr

4 October 2024

Mobile health technologies enable continuous, quantitative assessment of mobility and gait in real-world environments, facilitating early diagnoses of gait disorders, disease progression monitoring, and prediction of adverse events like falls. Tradit...

  • Article
  • Open Access
1,756 Views
16 Pages

Instrumenting Parkrun: Usefulness and Validity of Inertial Sensors

  • Rachel Mason,
  • Yunus Celik,
  • Gill Barry,
  • Alan Godfrey and
  • Samuel Stuart

24 December 2024

The analysis of running gait has conventionally taken place within an expensive and restricted laboratory space, with wearable technology offering a practical, cost-effective, and unobtrusive way to examine running gait in more natural environments....

  • Article
  • Open Access
12 Citations
5,230 Views
22 Pages

Daily Streamflow Forecasting Using Networks of Real-Time Monitoring Stations and Hybrid Machine Learning Methods

  • Yue Zhang,
  • Zimo Zhou,
  • Ying Deng,
  • Daiwei Pan,
  • Jesse Van Griensven Thé,
  • Simon X. Yang and
  • Bahram Gharabaghi

30 April 2024

Considering the increased risk of urban flooding and drought due to global climate change and rapid urbanization, the imperative for more accurate methods for streamflow forecasting has intensified. This study introduces a pioneering approach leverag...

  • Article
  • Open Access
39 Citations
4,798 Views
17 Pages

7 September 2021

Chromophoric dissolved organic matter (CDOM) is crucial in the biogeochemical cycle and carbon cycle of aquatic environments. However, in inland waters, remotely sensed estimates of CDOM remain challenging due to the low optical signal of CDOM and co...

  • Article
  • Open Access
159 Views
21 Pages

Accurate measurement of plant height in leafy vegetables is challenging due to their short stature, high planting density, and severe canopy occlusion during later growth stages. These factors often limit the reliability of single-plant monitoring ac...

  • Article
  • Open Access
12 Citations
4,011 Views
18 Pages

22 February 2022

This research work aims to study the effect of training parameter concept and sample size in the process of classification by using a fuzzy Possibilistic c-Means (PCM) approach for Pigeon Pea specific crop mapping. For specific class extraction, the...

  • Article
  • Open Access
24 Citations
5,514 Views
20 Pages

Real Driving Cycle-Based State of Charge Prediction for EV Batteries Using Deep Learning Methods

  • Seokjoon Hong,
  • Hoyeon Hwang,
  • Daniel Kim,
  • Shengmin Cui and
  • Inwhee Joe

29 November 2021

An accurate prediction of the State of Charge (SOC) of an Electric Vehicle (EV) battery is important when determining the driving range of an EV. However, the majority of the studies in this field have either been focused on the standard driving cycl...

  • Article
  • Open Access
29 Citations
4,268 Views
14 Pages

Identification of a Gait Pattern for Detecting Mild Cognitive Impairment in Parkinson’s Disease

  • Michela Russo,
  • Marianna Amboni,
  • Paolo Barone,
  • Maria Teresa Pellecchia,
  • Maria Romano,
  • Carlo Ricciardi and
  • Francesco Amato

10 February 2023

The aim of this study was to determine a gait pattern, i.e., a subset of spatial and temporal parameters, through a supervised machine learning (ML) approach, which could be used to reliably distinguish Parkinson’s Disease (PD) patients with an...

  • Article
  • Open Access
11 Citations
5,287 Views
10 Pages

Integrated Timing of Stroking, Breathing, and Kicking in Front-Crawl Swimming: A Novel Stroke-by-Stroke Approach Using Wearable Inertial Sensors

  • Silvia Fantozzi,
  • Vittorio Coloretti,
  • Maria Francesca Piacentini,
  • Claudio Quagliarotti,
  • Sandro Bartolomei,
  • Giorgio Gatta and
  • Matteo Cortesi

12 February 2022

Quantitative evaluation of synergic action among the different body segments is fundamental to swimming performance. The aim of the present study was to develop an easy-to-use tool for stroke-by-stroke evaluation of a swimmer’s integrated timin...

  • Article
  • Open Access
12 Citations
5,181 Views
24 Pages

6 January 2023

In the Alpine environment, snow plays a key role in many processes involving ecosystems, biogeochemical cycles, and human wellbeing. Due to the inaccessibility of mountain areas and the high spatial and temporal heterogeneity of the snowpack, satelli...

  • Article
  • Open Access
13 Citations
7,108 Views
17 Pages

20 August 2014

The forests of the Russian Taiga can be described as an enormous biomass and carbon reservoir. Therefore, they are of utmost importance for the global carbon cycle. Large-area forest inventories in these mostly remote regions are associated with logi...

  • Article
  • Open Access
18 Citations
4,936 Views
18 Pages

24 April 2020

In today’s chicken egg industry, maintaining the strength of eggshells in longer laying cycles is pivotal for improving the persistency of egg laying. Eggshell development and mineralization underlie a complex regulatory interplay of various pr...

  • Article
  • Open Access
7 Citations
2,214 Views
13 Pages

2 September 2022

In the Valencian Community, the applications of precision agriculture in multiannual woody crops with high added value (fruit trees, olive trees, almond trees, vineyards, etc.) are of priority interest. In these plots, canopies do not fully cover the...

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