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526 Results Found

  • Article
  • Open Access
11 Citations
5,830 Views
18 Pages

A Carrier Estimation Method Based on MLE and KF for Weak GNSS Signals

  • Hongyang Zhang,
  • Luping Xu,
  • Bo Yan,
  • Hua Zhang and
  • Liyan Luo

22 June 2017

Maximum likelihood estimation (MLE) has been researched for some acquisition and tracking applications of global navigation satellite system (GNSS) receivers and shows high performance. However, all current methods are derived and operated based on t...

(This article belongs to the Section Remote Sensors)
  • Article
  • Open Access
11 Citations
5,208 Views
22 Pages

13 July 2018

Digital broadcasting signals represent a promising positioning signal for indoors applications. A novel positioning technology named Time & Code Division-Orthogonal Frequency Division Multiplexing (TC-OFDM) is mainly discussed in this paper, whic...

(This article belongs to the Special Issue Selected Papers from UPINLBS 2018)
  • Article
  • Open Access
49 Citations
2,513 Views
14 Pages

The purpose of the work described in this paper is to investigate the use of autoregressive (AR) model by using maximum likelihood estimation (MLE) also interpretation and performance of this method to extract classifiable features from human electro...

  • Article
  • Open Access
8 Citations
10,090 Views
16 Pages

A Non-MLE Approach for Satellite Scatterometer Wind Vector Retrievals in Tropical Cyclones

  • Suleiman Alsweiss,
  • Rafik Hanna,
  • Peth Laupattarakasem,
  • W. Linwood Jones and ,
  • Christopher C. Hennon and
  • Ruiyao Chen
  • + 1 author+ 0 author

5 May 2014

Satellite microwave scatterometers are the principal source of global synoptic-scale ocean vector wind (OVW) measurements for a number of scientific and operational oceanic wind applications. However, for extreme wind events such as tropical cyclone...

  • Article
  • Open Access
1 Citations
1,525 Views
15 Pages

A Comparison of MLE for Some Index Distributions Based on Censored Samples

  • Yunhan Liu,
  • Changchun Gao,
  • Xiaofeng Liu,
  • Ping Luo and
  • Jianguo Ren

17 October 2024

This paper elucidates the prerequisites for maximum likelihood estimation (MLE) of parameters within the exponential and scale parameter families. Estimation of these parameters is predicated on data derived from censored samples and seeks to adhere...

(This article belongs to the Section D2: Operations Research and Fuzzy Decision Making)
  • Article
  • Open Access
9 Citations
2,773 Views
14 Pages

In this paper, we are interested in the rate of convergence for the central limit theorem of the maximum likelihood estimator of the drift coefficient for a stochastic partial differential equation based on continuous time observations of the Fourier...

(This article belongs to the Section Probability and Statistics)
  • Article
  • Open Access
1,372 Views
17 Pages

4 October 2025

Maximum likelihood estimation (MLE) in infinite mixture distributions often lacks closed-form solutions, requiring numerical methods such as the Newton–Raphson algorithm. Selecting appropriate initial values is a critical challenge in these pro...

  • Article
  • Open Access
4 Citations
4,146 Views
20 Pages

MLe-KCNQ2: An Artificial Intelligence Model for the Prognosis of Missense KCNQ2 Gene Variants

  • Alba Saez-Matia,
  • Markel G. Ibarluzea,
  • Sara M-Alicante,
  • Arantza Muguruza-Montero and ,
  • Eider Nuñez,
  • Rafael Ramis,
  • Oscar R. Ballesteros,
  • Diego Lasa-Goicuria,
  • Carmen Fons and
  • Alvaro Villarroel
  • + 9 authors+ 4 authors

Despite the increasing availability of genomic data and enhanced data analysis procedures, predicting the severity of associated diseases remains elusive in the absence of clinical descriptors. To address this challenge, we have focused on the KV7.2...

(This article belongs to the Special Issue Ion Conductance and Ion Regulation in Human Health and Disease)
  • Article
  • Open Access
5 Citations
3,922 Views
26 Pages

30 July 2021

The choice of a probability distribution function and confidence interval of estimated design values have long been of interest in flood frequency analysis. Although the four-parameter exponential gamma (FPEG) distribution has been developed for appl...

(This article belongs to the Special Issue Statistics in Hydrology)
  • Article
  • Open Access
434 Views
32 Pages

MLE-ResUNet: SWIR Image Super-Resolution Using Along-Track Oversampling and Visible-Light-Guided Deep Learning

  • Yongqian Zhu,
  • Bo Cheng,
  • Qianmin Liu,
  • Zhijing He and ,
  • Tianzhen Ma,
  • Chen Cao,
  • Bangjian Zhao,
  • Miao Hu,
  • Xianqiang He and
  • Chunlai Li
  • + 5 authors+ 0 author

10 June 2026

Shortwave infrared (SWIR) imagery plays an important role in land–water boundary delineation, coastal monitoring, and complex aquatic environment observation. However, the spatial resolution of SWIR bands is usually lower than that of visible b...

(This article belongs to the Special Issue Advanced Object Detection, Classification and Recognition in VIR Optical and SAR Remote Sensing Imagery)
  • Article
  • Open Access
6 Citations
2,553 Views
21 Pages

7 May 2025

Accurate indoor localization in wireless sensor networks remains a non-trivial challenge, particularly in complex environments characterized by signal variability and multipath propagation. This study presents a ZigBee-based localization approach tha...

(This article belongs to the Special Issue Sensors and Techniques for Indoor Positioning and Localization: 2nd Edition)
  • Article
  • Open Access
32 Citations
4,371 Views
14 Pages

Mojabanchromanol Isolated from Sargassum horneri Attenuates Particulate Matter Induced Inflammatory Responses via Suppressing TLR2/4/7-MAPK Signaling in MLE-12 Cells

  • Kalahe Hewage Iresha Nadeeka Madushani Herath,
  • Hyo Jin Kim,
  • Jae-Hyuk Jang,
  • Hyun-Soo Kim and ,
  • Hyun Jung Kim,
  • You-Jin Jeon and
  • Youngheun Jee
  • + 2 authors+ 0 author

8 July 2020

Chromanols from marine algae are studied for drug development due to its prominent bioactive properties, and mojabanchromanol (MC), a chromanol isolated from a brown algae Sargassum horneri, is found to possess anti-oxidant potential. In this study,...

  • Article
  • Open Access
8 Citations
6,527 Views
27 Pages

26 February 2015

In this study, I investigate the necessary condition for the consistency of the maximum likelihood estimator (MLE) of spatial models with a spatial moving average process in the disturbance term. I show that the MLE of spatial autoregressive and spat...

(This article belongs to the Special Issue Spatial Econometrics)
  • Article
  • Open Access
410 Views
21 Pages

Dynamic Security Assessment and Security Region Construction Based on the Maximum Lyapunov Exponent Criterion

  • Qiuquan Deng,
  • Xikai Liu,
  • Cuiyun Luo,
  • Yin Wu and ,
  • Guangming Li,
  • Xiejin Ling,
  • Zhencheng Liang,
  • Junzhi Ren,
  • Yuan Zeng and
  • Chao Qin
  • + 5 authors+ 0 author

With the advancement of wide-area measurement systems (WAMSs), response-driven methods for transient stability analysis have gained increasing attention in recent years. The maximum Lyapunov exponent (MLE)-based trajectory analysis technique enables...

  • Feature Paper
  • Article
  • Open Access
1 Citations
3,034 Views
13 Pages

Effects of Nitrate Recycle on the Sludge Densification in Plug-Flow Bioreactors Fed with Real Domestic Wastewater

  • Jie-Fu Wang,
  • Zhao-Hui An,
  • Xue-Yao Zhang,
  • Bob Angelotti and ,
  • Matt Brooks and
  • Zhi-Wu Wang
  • + 1 author+ 0 author

22 June 2023

The impact of adding a modified Ludzack–Ettinger (MLE) configuration with Nitrate Recycle (NRCY) on continuous-flow aerobic granulation has yet to be explored. The potential negative effects of MLE on sludge densification include that: (1) biof...

(This article belongs to the Special Issue Environmental Protection by Aerobic Granular Sludge Process)
  • Article
  • Open Access
7 Citations
3,459 Views
12 Pages

24 December 2021

The asymmetry of residuals about the origin is a severe issue in estimating a Box-Cox transformed model. In the framework of uncertainty theory, there are such theoretical issues regarding the least-squares estimation (LSE) and maximum likelihood est...

(This article belongs to the Special Issue Uncertainty Theory: Symmetry and Applications)
  • Technical Note
  • Open Access
4 Citations
2,842 Views
14 Pages

On the Quality Control of HY-2 Scatterometer High Winds

  • Shuyan Lang,
  • Wenming Lin,
  • Yi Zhang and
  • Yongjun Jia

4 November 2022

The operational wind processor for the Ku-band scatterometers onboard HY-2 satellite series uses a quality control (QC) scheme based on the maximum likelihood estimator (MLE). Since it is difficult to discriminate rain contamination from “true&...

(This article belongs to the Special Issue HY-2 Satellite Microwave Remote Sensing of Ocean for 10 Years: Applications and Advances)
  • Article
  • Open Access
5 Citations
3,397 Views
23 Pages

29 October 2021

This paper develops a framework to track the trajectory of a target in 2D by considering a moving ownship able to measure bearing measurements. Notably, the framework allows one to incorporate additional information (e.g., obtained via intelligence)...

(This article belongs to the Special Issue Advances in Angle-Only Filtering and Tracking in Two and Three Dimensions)
  • Article
  • Open Access
1 Citations
1,274 Views
21 Pages

20 November 2025

The present ecological study endeavours to evaluate the variability of life expectancy (MLE) and mortality rate (MR) on a micro scale, specifically between populations of neighbouring villages in the Silesia Province. This endeavour is of particular...

(This article belongs to the Section Human Toxicology and Epidemiology)
  • Article
  • Open Access
50 Citations
7,418 Views
15 Pages

1 July 2014

In this paper, based on a doubly generalized Type II censored sample, the maximum likelihood estimators (MLEs), the approximate MLE and the Bayes estimator for the entropy of the Rayleigh distribution are derived. We compare the entropy estimators’ r...

  • Article
  • Open Access
11 Citations
4,863 Views
17 Pages

Assessing Forest Ecosystems across the Vertical Edge of the Mid-Latitude Ecotone Using the BioGeoChemistry Management Model (BGC-MAN)

  • Cholho Song,
  • Stephan A. Pietsch,
  • Moonil Kim,
  • Sungeun Cha and ,
  • Eunbeen Park,
  • Anatoly Shvidenko,
  • Dmitry Schepaschenko,
  • Florian Kraxner and
  • Woo-Kyun Lee
  • + 4 authors+ 0 author

23 June 2019

The mid-latitude ecotone (MLE)—a transition zone between boreal and temperate forests, which includes the regions of Northeast Asia around 30°–60° N latitudes—delivers different ecosystem functions depending on different man...

(This article belongs to the Special Issue Cool Forests at risk? The Critical Role of Boreal and Mountain Ecosystems for People, Bioeconomy, and Climate)
  • Article
  • Open Access
5 Citations
5,192 Views
11 Pages

Developing an accurate Lowest Astronomical Tide (LAT) in a continuous form is essential for many maritime applications as it can be employed to develop an accurate continuous vertical control datum for hydrographic surveys applications and to produce...

(This article belongs to the Special Issue Uncertainty Modeling in Spatial Data Analysis)
  • Article
  • Open Access
2 Citations
2,618 Views
17 Pages

29 December 2022

This paper investigates the problem of elliptic localization in the absence of transmitter position. An efficient iterative method is developed to jointly evaluate the target and transmitter positions. Using the measurement information from the indir...

(This article belongs to the Special Issue Indoor and Outdoor Sensor Networks for Positioning and Localization)
  • Article
  • Open Access
793 Views
18 Pages

27 October 2025

Recent years have seen a considerable increase in clean, green electricity output from wind energy (WE). It is crucial to obtain the optimum parameters of the two-parameter Weibull distribution (TPWD) for wind speed (WS) to calculate the potential WE...

(This article belongs to the Special Issue Renewable and Sustainable Energy in Light of Energy Transition Processes—2nd Edition)
  • Article
  • Open Access
690 Views
65 Pages

10 February 2026

For the hierarchical normal and normal-inverse-gamma model, we derive the Bayesian estimator of the variance parameter in the normal distribution under Stein’s loss function—a penalty function that treats gross overestimation and underest...

(This article belongs to the Section Mathematical Analysis)
  • Article
  • Open Access
363 Views
30 Pages

31 July 2026

This work addresses statistical inference for multi-level step-stress accelerated life testing. Under the assumption that product lifetime follows the Gompertz distribution at each stress level, featuring a common shape parameter and stress-varying s...

(This article belongs to the Section Mathematical Analysis)
  • Article
  • Open Access
2 Citations
2,417 Views
19 Pages

1 September 2024

Atmospheric phase error is the main factor affecting the accuracy of ground-based synthetic aperture radar (GB-SAR). The atmospheric phase screen (APS) may be very complicated, so the atmospheric phase correction (APC) model is very important; in par...

(This article belongs to the Section Remote Sensors)
  • Article
  • Open Access
366 Views
18 Pages

28 August 2026

Continuous gas leakage in thin-walled sealed spacecraft structures produces sustained broadband acoustic-emission (AE) signals from which reliable first-arrival picking is difficult. This study presents an interpretable two-stage workflow that decoup...

(This article belongs to the Special Issue Acoustic and Ultrasonic Sensors for Non-Destructive Testing and Structural Health Monitoring)
  • Article
  • Open Access
5 Citations
3,461 Views
13 Pages

An Accurate UAV Ground Landing Station System Based on BLE-RSSI and Maximum Likelihood Target Position Estimation

  • Jaime Avilés-Viñas,
  • Roberto Carrasco-Alvarez,
  • Javier Vázquez-Castillo,
  • Jaime Ortegón-Aguilar and ,
  • Johan J. Estrada-López,
  • Daniel D. Jensen,
  • Ricardo Peón-Escalante and
  • Alejandro Castillo-Atoche
  • + 3 authors+ 0 author

30 June 2022

Earth observation with unmanned aerial vehicles (UAVs) offers an extraordinary opportunity to bridge the gap between field observations and traditional air and space-borne remote sensing. In this regard, ground landing stations (GLS) systems play a c...

  • Article
  • Open Access
5 Citations
4,491 Views
21 Pages

1 November 2019

In this paper, we solve the problem of mid price movements arising in high-frequency and algorithmic trading using real data. Namely, we introduce different new types of General Compound Hawkes Processes (GCHPDO, GCHP2SDO, GCHPnSDO) and find their di...

  • Article
  • Open Access
8 Citations
3,384 Views
17 Pages

14 October 2019

In this paper, an optimization algorithm is presented based on a distance and angle probability model for indoor non-line-of-sight (NLOS) environments. By utilizing the sampling information, a distance and angle probability model is proposed so as to...

(This article belongs to the Special Issue Sensors Localization in Indoor Wireless Networks)
  • Review
  • Open Access
7 Citations
8,465 Views
13 Pages

Structural Basis of DEAH/RHA Helicase Activity

  • Michael C. Chen and
  • Adrian R. Ferré-D’Amaré

15 August 2017

DEAH/RHA helicases are members of a large group of proteins collectively termed DExH-box, which also include Ski2-like and NS3/NPH-II helicases. By binding and remodeling DNA and RNA, DEAH/RHA helicases play critical roles in many cellular processes...

(This article belongs to the Section Biomolecular Crystals)
  • Feature Paper
  • Article
  • Open Access
6 Citations
2,742 Views
17 Pages

3 October 2023

Medical comparative studies often involve collecting data from paired organs, which can produce either bilateral or unilateral data. While many testing procedures are available that account for the intra-class correlation between paired organs for bi...

(This article belongs to the Section D1: Probability and Statistics)
  • Article
  • Open Access
1,600 Views
16 Pages

8 January 2025

For the high-dimensional covariance estimation problem, when limn→∞p/n=c∈(0,1), the orthogonally equivariant estimator of the population covariance matrix proposed by Tsai and Tsai exhibits certain optimal properties. Under some regul...

(This article belongs to the Section D1: Probability and Statistics)
  • Article
  • Open Access
4 Citations
3,328 Views
17 Pages

26 January 2021

This study discusses model development for response variables following a bivariate gamma distribution using three-parameters, namely shape, scale and location parameters, paying attention to spatial effects so as to produce different parameter estim...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
6 Citations
2,574 Views
29 Pages

This paper proposes and implements a methodology to fit a seven-parameter Generalized Tempered Stable (GTS) distribution to financial data. The nonexistence of the mathematical expression of the GTS probability density function makes maximum-likeliho...

(This article belongs to the Special Issue Featured Papers in Mathematics and Finance)
  • Article
  • Open Access
2 Citations
3,655 Views
18 Pages

29 January 2022

In this paper, we focus on the comparison of the bivariate zero-inflated Poisson inverse Gaussian regression (BZIPIGR) type II model in two cases: with and without exposure variables. The BZIPIGR type II model is applied to analyze the occurrence of...

  • Article
  • Open Access
7 Citations
2,316 Views
26 Pages

Tool Degradation Prediction Based on Semimartingale Approximation of Linear Fractional Alpha-Stable Motion and Multi-Feature Fusion

  • Yuchen Yuan,
  • Jianxue Chen,
  • Jin Rong,
  • Piercarlo Cattani and ,
  • Aleksey Kudreyko and
  • Francesco Villecco
  • + 1 author+ 0 author

Tool wear will reduce workpieces’ quality and accuracy. In this paper, the vibration signals of the milling process were analyzed, and it was found that historical fluctuations still have an impact on the existing state. First of all, the linea...

(This article belongs to the Special Issue New Trends in Fractional Stochastic Processes)
  • Article
  • Open Access
15 Citations
5,816 Views
24 Pages

Contextually Enriched Meta-Learning Ensemble Model for Urdu Sentiment Analysis

  • Kanwal Ahmed,
  • Muhammad Imran Nadeem,
  • Dun Li,
  • Zhiyun Zheng and ,
  • Nouf Al-Kahtani,
  • Hend Khalid Alkahtani,
  • Samih M. Mostafa and
  • Orken Mamyrbayev
  • + 3 authors+ 0 author

3 March 2023

The task of analyzing sentiment has been extensively researched for a variety of languages. However, due to a dearth of readily available Natural Language Processing methods, Urdu sentiment analysis still necessitates additional study by academics. W...

(This article belongs to the Special Issue Deep Learning and Symmetry)
  • Article
  • Open Access
13 Citations
4,135 Views
25 Pages

22 January 2024

Sustainable agricultural development has been the policy priority for countries with limited natural resources. New farmers’ emergence and growth have not only helped to address the labor crisis in agriculture to some extent, but they have also...

(This article belongs to the Section Water, Energy, Land and Food (WELF) Nexus)
  • Article
  • Open Access
1,058 Views
19 Pages

3 April 2026

Accurate prediction and optimization of effluent quality are essential for the stable operation of wastewater treatment plants under increasing influent variability and stringent discharge regulations. This study presents an integrated data-driven fr...

(This article belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
  • Article
  • Open Access
14 Citations
5,613 Views
23 Pages

Characterization of an Ultrasonic Local Positioning System for 3D Measurements

  • Khaoula Mannay,
  • Jesús Ureña,
  • Álvaro Hernández,
  • Mohsen Machhout and
  • Taoufik Aguili

14 May 2020

Indoor location and positioning systems (ILPS) are used to locate and track people, as well as mobile and/or connected targets, such as robots or smartphones, not only inside buildings with a lack of global navigation satellite systems (GNSS) signals...

(This article belongs to the Special Issue Sensors and Sensing Technologies for Indoor Positioning and Indoor Navigation)
  • Article
  • Open Access
47 Citations
8,383 Views
23 Pages

13 February 2017

It is well known that multipath effect remains a dominant error source that affects the positioning accuracy of Global Navigation Satellite System (GNSS) receivers. Significant efforts have been made by researchers and receiver manufacturers to mitig...

(This article belongs to the Section Remote Sensors)
  • Article
  • Open Access
1 Citations
1,806 Views
13 Pages

11 December 2024

The removal of nitrogen compounds in wastewater has been successfully developed with various activated sludge-based processes. Microorganisms immobilized in media would enhance biological efficiency by the increase in biomass concentration; however,...

(This article belongs to the Section Wastewater Treatment and Reuse)
  • Article
  • Open Access
4 Citations
2,780 Views
23 Pages

13 December 2023

Rapidly developed deep learning methods, widely used in various fields of civil engineering, have provided an efficient option to reduce the computational costs and improve the predictive capabilities. However, it should be acknowledged that the appl...

  • Article
  • Open Access
1 Citations
3,723 Views
24 Pages

The reduced cumulative distribution function (rCDF) is the maximal lower bound for the cumulative distribution function (CDF). It is equivalent to the inverse of the conditional value at risk (CVaR), or one minus the buffered probability of exceedanc...

(This article belongs to the Special Issue Financial Technologies (Fintech) in Finance and Economics)
  • Article
  • Open Access
484 Views
17 Pages

Effects of Mulberry Leaf Extract on the Growth Performance, Organ Indices, Flesh Quality, Collagen Metabolism, and Myofiber Development of Grass Carp (Ctenopharyngodon idella)

  • Yan Lin,
  • Qi’ao Song,
  • Xizheng Sun,
  • Wenqiang Jiang and ,
  • Siyue Lu,
  • Zhengyan Gu and
  • Linghong Miao
  • + 2 authors+ 0 author

To investigate the effects of mulberry leaf extract (MLE) on the growth performance, organ indices, and flesh quality of grass carp (Ctenopharyngodon idella), a basal diet (Control, Crude protein 30.25%, Crude lipid 7.23%) and three MLE-supplemented...

(This article belongs to the Special Issue The Latest Development of Molecular Research in Animal Nutrition)
  • Article
  • Open Access
3 Citations
3,383 Views
11 Pages

31 March 2021

We model day-ahead electricity prices of the UK power market using skew generalized error distribution. This distribution allows us to take into account the features of asymmetry, heavy tails, and a peak higher than in normal or Student’s t distribut...

(This article belongs to the Special Issue Volatility Models Applied to Geophysics, Financial Market Data and Other Disciplines)
  • Article
  • Open Access
17 Citations
5,940 Views
10 Pages

12 January 2023

Typically, in accelerated life testing analysis, only probability distributions possessing shape parameters are used to fit the experimental data, and many distributions with no shape parameters have been excluded, including the fundamental ones like...

(This article belongs to the Special Issue Electrochemical, Thermal, and Safety Properties of Lithium and Post-Li Materials and Cells II)
  • Article
  • Open Access
5 Citations
3,779 Views
13 Pages

An Advanced Fractional Order Method for Temperature Control

  • Ricardo Cajo,
  • Shiquan Zhao,
  • Isabela Birs,
  • Víctor Espinoza and ,
  • Edson Fernández,
  • Douglas Plaza and
  • Gabriela Salcan-Reyes
  • + 2 authors+ 0 author

Temperature control in buildings has been a highly studied area of research and interest since it affects the comfort of occupants. Commonly, temperature systems like centralized air conditioning or heating systems work with a fixed set point locally...

(This article belongs to the Section Engineering)

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