alexandria engineering journal最新文献_第6页

Actuarial and various entropy measures for a new extended log Kumaraswamy model: Properties and applications 一个新的扩展对数Kumaraswamy模型的精算和各种熵度量：性质和应用

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-05 DOI: 10.1016/j.aej.2025.04.039

Naif Alotaibi

{"title":"Actuarial and various entropy measures for a new extended log Kumaraswamy model: Properties and applications","authors":"Naif Alotaibi","doi":"10.1016/j.aej.2025.04.039","DOIUrl":"10.1016/j.aej.2025.04.039","url":null,"abstract":"<div><div>This article introduces a novel extension of the log Kumaraswamy distribution, termed Marshall Olkin log Kumaraswamy <span><math><mrow><mo>(</mo><mi>M</mi><mi>O</mi><mi>L</mi><msub><mrow><mi>k</mi></mrow><mrow><mi>w</mi></mrow></msub><mo>)</mo></mrow></math></span>. The mathematical and statistical characteristics of the suggested distribution are constructed, encompassing explicit formulations for quantiles, moments, conditional moments, as well as the Bonferroni and Lorenz curves. Five estimation methods for the model parameters have been derived. Entropy measures uncertainty and disorder in systems, playing a crucial role in fields such as statistics, economics, physics, and computer science. Rényi entropy is widely used in applications like statistical inference and pattern recognition. Accordingly, five entropy measures have been obtained for the <span><math><mrow><mi>M</mi><mi>O</mi><mi>L</mi><msub><mrow><mi>k</mi></mrow><mrow><mi>w</mi></mrow></msub></mrow></math></span> distribution A Monte Carlo simulation study is conducted to assess the efficacy of these estimators. Additionally, certain actuarial metrics, including value at risk and tail value at risk, are computed. Ultimately, applications of the model to actual data sets are provided to demonstrate the applicability and utility of the <span><math><mrow><mi>M</mi><mi>O</mi><mi>L</mi><msub><mrow><mi>k</mi></mrow><mrow><mi>w</mi></mrow></msub></mrow></math></span> distribution.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 377-392"},"PeriodicalIF":6.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoarchitectonic MOF-derived materials for enhanced photocatalytic activity in organic contaminant removal: A review 纳米结构mof衍生材料在有机污染物去除中的光催化活性增强研究进展

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-05 DOI: 10.1016/j.aej.2025.04.092

Mojtaba Rostami , Alireza Badiei , Mahnaz Alijani , Anushree Das , Ghodsi Mohammadi Ziarani

{"title":"Nanoarchitectonic MOF-derived materials for enhanced photocatalytic activity in organic contaminant removal: A review","authors":"Mojtaba Rostami , Alireza Badiei , Mahnaz Alijani , Anushree Das , Ghodsi Mohammadi Ziarani","doi":"10.1016/j.aej.2025.04.092","DOIUrl":"10.1016/j.aej.2025.04.092","url":null,"abstract":"<div><div>Environmental pollution, particularly from organic contaminants, poses significant challenges to global sustainability, necessitating the development of efficient and eco-friendly remediation technologies. Photocatalytic degradation has emerged as a promising solution, with metal-organic frameworks (MOFs) gaining attention due to their high surface areas, tunable porosity, and compositional flexibility. This review aims to explore the potential of MOF-derived materials, such as mono- and bimetallic MOF-based hetero-nano-architectures (HNAs) (e.g., MIL-125(Ti), ZIF-8, Fe-MOF, MIL-68(In), ZIF-67, Ce-MOF, Bi-MOF, and Co/Fe-based MOFs), for enhancing photocatalytic activity in the removal of organic pollutants. The novelty of this work lies in its focus on MOF-derived carbon materials and their integration with graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) to form heterostructure composites, which offer superior light absorption, charge separation, and pollutant degradation efficiency. The review is structured into two key sections: (1) mono/bimetallic MOF-derived semiconductors and (2) g-C<sub>3</sub>N<sub>4</sub>-based MOF heterostructure composites, highlighting their exceptional performance in degrading contaminants such as dyes, antibiotics, and pharmaceuticals. Results demonstrate that these materials exhibit improved photocatalytic performance, stability, and reusability, making them highly effective for environmental remediation. This work provides valuable insights into the design and application of advanced MOF-derived photocatalysts, paving the way for sustainable solutions to organic pollution.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 448-479"},"PeriodicalIF":6.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulational instability, bifurcation study, sensitivity analysis, and Jacobi elliptic waves of a resonant nonlinear Schrödinger equation 调制不稳定性，分岔研究，灵敏度分析，和雅可比椭圆波的共振非线性Schrödinger方程

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-04 DOI: 10.1016/j.aej.2025.04.093

K. Hosseini , F. Alizadeh , S. Kheybari , Sekson Sirisubtawee , M.S. Osman

引用次数: 0

Mechanical properties of steel tubes filled with coal gangue concrete in a corrosive environment 煤矸石混凝土填充钢管在腐蚀环境中的力学性能

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-03 DOI: 10.1016/j.aej.2025.04.076

Tong Zhang , Qingru Zhu , Gao Shan

{"title":"Mechanical properties of steel tubes filled with coal gangue concrete in a corrosive environment","authors":"Tong Zhang , Qingru Zhu , Gao Shan","doi":"10.1016/j.aej.2025.04.076","DOIUrl":"10.1016/j.aej.2025.04.076","url":null,"abstract":"<div><div>To achieve the in-situ utilization of coal gangue, coal gangue concrete filled steel tube (CGCFST) was applied in coal mine roadways as support structure. However, the reliability of the structure was negatively impacted by corrosive environment in coal mines. This study tested the axial compression performance of twenty-four circular CGCFST stubs with corrosion damage, considering the influence of coal gangue replacement rate and steel corrosion rate. The test results showed that the failure mode of the specimens was shear failure. The ultimate load, ductility, and stiffness of the CGCFST stub decreased with the increase of the corrosion rate and replacement rate, with corrosion rate having a more significant impact on the mechanical properties of the specimens. For the C30 CGCFST stub with a replacement rate of 100 %, when the corrosion rate is 30 %, the ultimate load, ductility, and stiffness of the CGCFST stub were reduced by 19.9 %, 48.8 %, and 27.3 %, respectively. Compared to high-strength concrete specimens, in addition to ductility, the effects of replacement rate and corrosion rate on the ultimate load and stiffness of low strength concrete were more significant. Finite element analysis was conducted to assess the impact of the steel ratio, material strength, and corrosion rate on the ultimate load of the CGCFST stub. The results indicated that concrete strength exerted the most significant influence on the ultimate load of the stub, suggesting that improving the strength of concrete is an effective strategy to ensure its safety. A design method for the ultimate load of CGCFST stubs in a corrosive environment was proposed. The CO<sub>2</sub> emission of CGCFST stubs was evaluated, suggesting to use concrete with high strength and natural aggregates completely replaced by coal gangue in practical engineering.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 418-440"},"PeriodicalIF":6.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioinspired heterogeneous N, S-codoped 3D carbon- CuWO₄@Ag nano-architecture from CuWO₄-spongin scaffold for boosting photocatalytic efficiency and cell viability 四价CuWO -海绵支架的仿生非均相N， s共掺杂3D碳-四价CuWO @Ag纳米结构，提高光催化效率和细胞活力

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-02 DOI: 10.1016/j.aej.2025.04.065

Mojtaba Rostami , Alireza Badiei , Mahdi Fasihi-Ramandi , Hermann Ehrlich , Milad Jourshabani , Byeong–Kyu Lee , Ghodsi Mohammadi Ziarani , Mehdi Rahimi-Nasrabadi

{"title":"Bioinspired heterogeneous N, S-codoped 3D carbon- CuWO₄@Ag nano-architecture from CuWO₄-spongin scaffold for boosting photocatalytic efficiency and cell viability","authors":"Mojtaba Rostami , Alireza Badiei , Mahdi Fasihi-Ramandi , Hermann Ehrlich , Milad Jourshabani , Byeong–Kyu Lee , Ghodsi Mohammadi Ziarani , Mehdi Rahimi-Nasrabadi","doi":"10.1016/j.aej.2025.04.065","DOIUrl":"10.1016/j.aej.2025.04.065","url":null,"abstract":"<div><div>This study investigated the photodegradation process of Rhodamine B (RhB) and acetaminophen (ACE) using a novel N-S-codoped carbon microporous and three-dimensional (3D) architecture (NSC) derived from a spongin scaffold of poriferan origin. For the first time NSC-CuWO<sub>4</sub> was synthesized by converting a ready to use 3D microfibrous spongin scaffold through co-precipitation and in-situ pyrolysis. Subsequently, silver nanoparticles (Ag NPs) were incorporated to create the NSC-CuWO<sub>4</sub>@Ag hybrid material. The 3D architectural morphology and N-S-codoping of the material provided advantages in terms of high charge-separation efficiency, charge transfer, mass transfer, and optical absorption during the photoreaction. Under visible-light irradiation, NSC-CuWO<sub>4</sub>@Ag hybrid nanomaterial demonstrated excellent photocatalytic efficiency, degrading over 91 % of ACE and 97 % of RhB within 30 minutes. The photochemical tests revealed that electrons generated by irradiated CuWO<sub>4</sub>@Ag material transferred to the NSC microporous structure, facilitating the reduction of O<sub>2</sub> and the production of H<sub>2</sub>O<sub>2</sub> in an aqueous environment. This process significantly boosted the photocatalytic activity of CuWO<sub>4</sub>. The MTT assay indicated that NSC-CuWO₄@Ag nanoparticles (NPs) showed the highest cell viability. This is attributed to the silver NPs, which enhance biocompatibility and reduce the cytotoxic effects associated with carbonized spongin-derived NSC. This hybrid nanocomposite demonstrates excellent biocompatibility, making it a promising candidate for biomedical applications that require minimal cellular toxicity.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 393-407"},"PeriodicalIF":6.2,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel biosensor based on well-aligned manganese-doped ZnO nanorods for detecting lung cancer antigen 基于排列良好的锰掺杂ZnO纳米棒的新型肺癌抗原检测传感器

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-02 DOI: 10.1016/j.aej.2025.04.079

Kai Liu , Lei Zhang , Dajia Fu , Yihui Fu , Yanhong Ouyang , Xiuxiu Ding , Chaochao Wei

{"title":"A novel biosensor based on well-aligned manganese-doped ZnO nanorods for detecting lung cancer antigen","authors":"Kai Liu , Lei Zhang , Dajia Fu , Yihui Fu , Yanhong Ouyang , Xiuxiu Ding , Chaochao Wei","doi":"10.1016/j.aej.2025.04.079","DOIUrl":"10.1016/j.aej.2025.04.079","url":null,"abstract":"<div><div>Cytokeratin 19 (CK19) fragment is a well-known biomarker for lung cancer, and early and precise detection is crucial for efficient therapeutic care. In this work, we report a new biosensor that uses well-aligned manganese (Mn)-doped zinc oxide (ZnO) nanorods as the sensing element to detect CK19 with high sensitivity and specificity. ZnO nanorods doped with Mn ions on a glassy carbon electrode (Mn-doped ZnO NRs/GCE) were modified by the electroception method, and then anti-CK19 and bovine serum albumin (BSA) were immobilized on modified electrodes (BSA/anti-CK19/Mn-doped ZnO/GCE), respectively. Cyclic voltammetry (CV) and Fourier-transform infrared spectroscopy (FTIRS) verified that anti-CK19 and BSA were successfully immobilized on the Mn-doped ZnO nanorods. In order to determine CK19, the tests employing CV and differential pulse voltammetry (DPV) methodologies showed that BSA/anti-CK19/Mn-doped ZnO/GCE showed excellent reproducibility, repeatability, sensitivity, selectivity, and stability. The BSA/anti-CK19/Mn-doped ZnO/GCE showed a linear response over a concentration range of 0.5 ng/mL to 1000 µg/mL. The results indicated that the sensitivity and limit of detection were 0.094 ng/mL and 6.37697 μA/mgL-1, respectively. The biosensor that has been presented has the potential to significantly improve the early detection of lung cancer, which would eventually improve patient outcomes and survival rates.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 368-376"},"PeriodicalIF":6.2,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cost analysis for solar-powered adsorption desalination-cooling system utilizing improved Maxsorb III adsorbents under Egypt weather conditions 埃及气候条件下利用改进型Maxsorb III吸附剂的太阳能吸附脱盐冷却系统的成本分析

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-02 DOI: 10.1016/j.aej.2025.04.038

Ehab S. Ali , Ahmed S. Alsaman , Ahmed A. Askalany , A.M. Farid , Mohamed Ghazy , Ridha Ben Mansour , Rached Ben-Mansour , Wael M. El-Maghlany , Mohamed Hamam M. Tawfik

{"title":"Cost analysis for solar-powered adsorption desalination-cooling system utilizing improved Maxsorb III adsorbents under Egypt weather conditions","authors":"Ehab S. Ali , Ahmed S. Alsaman , Ahmed A. Askalany , A.M. Farid , Mohamed Ghazy , Ridha Ben Mansour , Rached Ben-Mansour , Wael M. El-Maghlany , Mohamed Hamam M. Tawfik","doi":"10.1016/j.aej.2025.04.038","DOIUrl":"10.1016/j.aej.2025.04.038","url":null,"abstract":"<div><div>This study investigates performance and economic evaluation of an annual adsorption desalination system utilizing several activated carbons (raw Maxsorb III, Maxsorb III/HCl, Maxsorb III/(NH<sub>4</sub>)<sub>2</sub>CO<sub>3,</sub> and Maxsorb III/CaCl<sub>2</sub>) in the context of Egyptian climatic conditions. A comparison is made between the performance of the adsorption desalination system with and without heat recovery from the condenser/evaporator. MATLAB and TRNSYS are used to carry out the model using climatic data of the hot region. The results revealed that the Maxsorb III/CaCl<sub>2</sub> system exhibits superior performance, whereas the raw Maxsorb III demonstrates the least efficacy among the investigated adsorbent materials. The results indicated that the Maxsorb III/CaCl<sub>2</sub> system provided the most significant specific daily water production value of 25.4 m<sup>3</sup>/ton without heat recovery, while it could be increased to (36.7 m<sup>3</sup>/ton) with heat recovery, achieving a gained output ratio of 0.76 at the optimal cycle time 700 s. The Maxsorb III/CaCl<sub>2</sub> system had the most cost-effective method for producing desalinated water. Using waste heat instead of solar energy leads to reduced expenses. The costs for cycles without heat recovery in June were 4.62 and 0.9 $/m<sup>3</sup> for solar energy and waste heat, respectively. The cost of heat recovery cycles decreased to 4.25 and 0.65 $/m<sup>3</sup>.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 341-357"},"PeriodicalIF":6.2,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revolutionizing healthcare: An IoT-driven approach to remote patient health monitoring and management during the pandemic and beyond 革命性的医疗保健：大流行期间及以后的物联网驱动的远程患者健康监测和管理方法

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-02 DOI: 10.1016/j.aej.2025.04.068

Fahd N. Al-Wesabi , Ghada Moh. Samir Elhessewi , Mohammed Alqahtani , Asma Alshuhail , Turke Althobaiti , Nojood O. Aljehane , Mohammed Yahya Alzahrani , Hamad Almansour

{"title":"Revolutionizing healthcare: An IoT-driven approach to remote patient health monitoring and management during the pandemic and beyond","authors":"Fahd N. Al-Wesabi , Ghada Moh. Samir Elhessewi , Mohammed Alqahtani , Asma Alshuhail , Turke Althobaiti , Nojood O. Aljehane , Mohammed Yahya Alzahrani , Hamad Almansour","doi":"10.1016/j.aej.2025.04.068","DOIUrl":"10.1016/j.aej.2025.04.068","url":null,"abstract":"<div><div>The integration of Internet of Things (IoT) technologies into the healthcare sector has witnessed substantial growth, particularly during global health emergencies such as the COVID-19 pandemic. This research introduces a Smart Health Monitoring System (SHMS) that enables real-time patient health tracking and environmental monitoring using IoT and machine learning (ML). The primary goal of the system is to provide continuous and remote monitoring of vital signs, including Body Temperature (BT), Heart Rate (HR), Environmental Temperature (ET), and Environmental Humidity (EH). Sensor-based data acquisition is managed through microcontroller hardware, with data transmitted via Wi-Fi to cloud-based platforms accessible through smartphones, laptops, and other internet-enabled devices. The system processes data using machine learning models—Logistic Regression and Decision Tree—to predict the patient’s health status with high accuracy. Results indicate that the Logistic Regression model outperforms the Decision Tree model, achieving an accuracy rate of 88.89 %. Additionally, the SHMS architecture is scalable, supporting multi-user environments and large numbers of connected devices, making it suitable for real-world healthcare deployment. To enhance pandemic responsiveness, the system can be extended to measure additional parameters such as Respiratory Rate (RR) and Oxygen Saturation (SpO₂), which are essential during outbreaks of respiratory diseases like COVID-19 and influenza. This solution offers an effective and accessible tool for early detection, timely intervention, and reduced burden on healthcare infrastructure, especially during health crises.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 358-367"},"PeriodicalIF":6.2,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Properties and hydration products analysis of magnesium slag-based filling materials 镁渣基填料性能及水化产物分析

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-02 DOI: 10.1016/j.aej.2025.04.106

Zunqing Liu , Jingwei Gong , Haojie Ji , Xiaoling Zhong , Jun Dong , Haiwei Xie

{"title":"Properties and hydration products analysis of magnesium slag-based filling materials","authors":"Zunqing Liu , Jingwei Gong , Haojie Ji , Xiaoling Zhong , Jun Dong , Haiwei Xie","doi":"10.1016/j.aej.2025.04.106","DOIUrl":"10.1016/j.aej.2025.04.106","url":null,"abstract":"<div><div>This study investigates the properties and hydration products of filling materials based on modified magnesium slag (MMS) and unmodified magnesium slag (UMS). Two types of MMS (MMS-A and MMS-B) were compared with UMS through various analyses. X-ray diffraction revealed that MMS predominantly contained β-C<sub>2</sub>S, while UMS was dominated by γ-C<sub>2</sub>S. Strength activity index tests showed superior performance of MMS, with MMS-A and MMS-B achieving 97.53 % and 89.46 % at 3 days, respectively, compared to 68.5 % for UMS. Isothermal calorimetry demonstrated that MMS-based pastes had shorter induction periods and higher heat release rates, with MMS-A reaching a peak of 0.470 mW/g at 30 hours, while UMS peaked at 0.203 mW/g at 66 hours. Compressive strength tests at 28 days yielded 8.39 MPa for MMS-A, 8.08 MPa for MMS-B, and 4.99 MPa for UMS-based pastes. Microstructural analyses, including SEM, TG-DTG, and FT-IR, confirmed denser C-S-H formation and more refined pore structures in MMS-based pastes. The minimal differences between MMS-A and MMS-B across all tests demonstrated the stability of the modification process. These findings suggest that MMS offers a promising alternative for sustainable filling materials in mining applications, effectively valorizing an industrial by-product while potentially improving backfill performance.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 408-417"},"PeriodicalIF":6.2,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Navigation of the spraying robot in jujube orchard 枣园喷洒机器人导航

IF 6.2 2区工程技术

alexandria engineering journal Pub Date : 2025-05-01 DOI: 10.1016/j.aej.2025.04.080

Yufeng Li , Yang Li , Jing Nie , Zeyi Li , Jingbin Li , Jianrui Gao , Zhangqi Fang

{"title":"Navigation of the spraying robot in jujube orchard","authors":"Yufeng Li , Yang Li , Jing Nie , Zeyi Li , Jingbin Li , Jianrui Gao , Zhangqi Fang","doi":"10.1016/j.aej.2025.04.080","DOIUrl":"10.1016/j.aej.2025.04.080","url":null,"abstract":"<div><div>This study presents a solution for achieving high-precision cruising along a predefined operational path to enable fully automated spraying in a densely planted jujube orchard. A fully autonomous navigation system for a jujube orchard spraying robot, based on a combination of LiDAR SLAM and IMU inertial navigation, was designed. The system integrates IMU and LiDAR positioning information using an extended Kalman filter algorithm. The navigation system uses LiDAR to detect the orchard environment and perform SLAM mapping, while the AMCL algorithm determines the robot's position in the map using sensor localisation data. The LiDAR-detected data between rows in the orchard is clustered and fitted to extract operational points between the rows. The robot's spraying path is designed using the A* and DWA algorithms, enabling specific path cruising for the spraying robot in the high concentration of orchards with jujube plants. Experiments conducted in the high concentration of orchards with jujube plants show that when the robot travels along a 15-meter path, the mean deviation in the X-axis is 3.41 cm, and the average yaw angle is 1.25°. When moving within the 1.5-meter fixed-point parking area, the mean X-direction deviation is 1.98 cm, with an average yaw angle of 0.77°. When the robot turns with a radius of 2 m, the average deviation in the X-axis is 1.17 cm, the average distance deviation parallel to the trajectory is 4.79 cm, and the average yaw angle is 3.31°. Additionally, when the robot follows an S-shaped path, the mean deviation in the X-axis is 1.8 cm, and the average yaw angle is 1.6°. The system meets the cruising requirements for actual plant protection spraying operations. It offers high navigation accuracy, providing an effective reference for autonomous navigation in densely planted jujube orchard spraying operations.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 320-340"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0