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Journal articles on the topic 'GPR'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kaur, Rajinder, and Abhinav Saxena. "Efficacy of bee pollen and beebread against Salmonella typhimurium in BALB/c mice." ENTOMON 49, no. 3 (2024): 417–24. http://dx.doi.org/10.33307/entomon.v49i3.1260.

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The present work evaluate the antibacterial and antioxidant potential of bee pollen and beebread against the toxic changes induced by Salmonella typhimurium in BALB/c mice. The experiment was divided into six groups as; Gp1 was normal, Gp2 was infected with Salmonella enterica serovar Typhimurium at 2×104 CFU, Gp3 and Gp5 were administrated with bee pollen and beebread of Helianthus annus crop alone at 250mg kg-1 bw respectively; Gp4 and Gp6 were with S. typhimurium and bee pollen and beebread H. annus at 250mg kg-1 bw respectively. Different hematological and oxidative stress parameters were

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El-Naggar, Sabry Ali, Karim Samy El-Said, Mona Elwan, et al. "Toxicity of bean cooking media containing EDTA in mice." Toxicology and Industrial Health 36, no. 6 (2020): 436–45. http://dx.doi.org/10.1177/0748233719893178.

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The possible renal and hepatic toxicities of ethylenediaminetetraacetic acid (EDTA) in bean cooking media were studied using 100 male albino mice. Two sublethal doses of EDTA were used to explore their toxic effects; 20 mg/kg and 200 mg/kg, which corresponded to 1/100th and 1/10th of LD50, respectively. Accordingly, the toxicity study was performed using 50 mice, divided into five groups ( n = 10/group) as follows: group 1 (Gp1) served as a negative control and was orally administered normal saline; group 2 (Gp2) was administered the bean cooking medium; group 3 (Gp3) was administered EDTA (20

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Davis, Melissa A., Leticia E. Camacho, Alexander L. Pendleton, et al. "Augmented glucose production is not contingent on high catecholamines in fetal sheep with IUGR." Journal of Endocrinology 249, no. 3 (2021): 195–207. http://dx.doi.org/10.1530/joe-21-0071.

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Fetuses with intrauterine growth restriction (IUGR) have high concentrations of catecholamines, which lowers the insulin secretion and glucose uptake. Here, we studied the effect of hypercatecholaminemia on glucose metabolism in sheep fetuses with placental insufficiency-induced IUGR. Norepinephrine concentrations are elevated throughout late gestation in IUGR fetuses but not in IUGR fetuses with a bilateral adrenal demedullation (IAD) at 0.65 of gestation. Euglycemic (EC) and hyperinsulinemic–euglycemic (HEC) clamps were performed in control, intact-IUGR, and IAD fetuses at 0.87 of gestation.

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Badawi, Rehab, Hanan Soliman, Dina Ziada, et al. "Serum Markers as a Predictor of Hepatic Fibrosis Compared to Fibroscan in chronic hepatitis B Infected Egyptian patients: A Cross-sectional Study." Open Biomarkers Journal 10, no. 1 (2020): 69–75. http://dx.doi.org/10.2174/1875318302010010069.

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Background & Aims: The gamma-glutamyl transpeptidase (GGT) to platelet ratio (GPR), the gamma-glutamyl transpeptidase to albumin (GAR) and S-index are novel biomarkers suggested to assess liver fibrosis. The aim of the work was to assess the correlation between GGT and other related markers as GAR and GPR among other previous documented markers and the degree of fibrosis and steatosis in chronic HBV Egyptian patients as measured by fibroscan. Materials And Methods: After ethical approval of the protocol, a total of 170 chronic HBV patients were recruited from tropical medicine department,

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Li, Chunjian, Chenguang Yang, Junyan Zhu, et al. "Predictive Value of Globulin to Prealbumin Ratio for 3-Month Functional Outcomes in Acute Ischemic Stroke Patients." Disease Markers 2022 (March 17, 2022): 1–8. http://dx.doi.org/10.1155/2022/1120192.

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Objective. We aimed to evaluate and compare the association between globulin to albumin ratio (GAR) and globulin to prealbumin ratio (GPR) and 3-month functional prognosis of acute ischemic stroke (AIS) patients receiving intravenous thrombolysis therapy. Methods.234 AIS patients undergoing intravenous thrombolysis were retrospectively enrolled with acute ischemic stroke from February 2016 to October 2019. Blood sample was collected within 24 h after admission. Poor outcome was defined as the modified Rankin Scale mRS ≥ 3 and a favorable outcome as mRS < 3 . Severe stroke was defined as the

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Karie, Svetlana, Vincent Launay-Vacher, and Gilbert Deray. "GPR-Antibactériens." Le Pharmacien Hospitalier 43, no. 174 (2008): 176. http://dx.doi.org/10.1016/s0768-9179(08)74210-x.

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Siragusi, Rafael Henrique De Souza, Valeska Tallia Mendes de Barros, Emiliana Andrade Fiorini, et al. "Measurement of serum lactate values in domestic cats (Felis catus) submitted to physical and chemical restraint." Brazilian Journal of Veterinary Research and Animal Science 54, no. 4 (2017): 383. http://dx.doi.org/10.11606/issn.1678-4456.bjvras.2017.132024.

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A utilização do lactato sérico é cada vez mais comum na Medicina Veterinária, por ser um excelente marcador de oxigenação tecidual, elevando-se em situações de hipóxia tecidual e realizando a glicólise anaeróbica como fonte de energia. Pesquisas científicas em cães o apontam como fator prognóstico em diversas afecções, sendo pouco utilizado em felinos domésticos devido ao elevado limiar de estresse da espécie, podendo interferir em seus valores. Assim, este trabalho avaliou os valores de lactato sérico em felinos domésticos durante contenção física e após contenção química, utilizando a associ

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TRUBITSINA, Olga P., and Vladimir N. BASHKIN. "Geopolitical Risks of Hydrocarbon Development in the Russian Arctic." Arctic and North, no. 43 (June 24, 2021): 109–27. http://dx.doi.org/10.37482/issn2221-2698.2021.43.109.

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The article is devoted to the issues of geopolitical risks (GPR) in the hydrocarbon development of the Russian Arctic. The authors pay special attention to the analysis of modern geopolitical and geostrategic challenges of the Arctic region development. The article identifies the key geopolitical factors that affect the sustainable development of the Arctic and analyzes the similarities and differences in the geostrategic positions of the Arctic Five. One of the most important factors of the XXI century that determines the alignment and interaction of various geopolitical forces is the struggl

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Zabel, Brian A., William W. Agace, James J. Campbell, et al. "Human G Protein–Coupled Receptor Gpr-9-6/Cc Chemokine Receptor 9 Is Selectively Expressed on Intestinal Homing T Lymphocytes, Mucosal Lymphocytes, and Thymocytes and Is Required for Thymus-Expressed Chemokine–Mediated Chemotaxis." Journal of Experimental Medicine 190, no. 9 (1999): 1241–56. http://dx.doi.org/10.1084/jem.190.9.1241.

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TECK (thymus-expressed chemokine), a recently described CC chemokine expressed in thymus and small intestine, was found to mediate chemotaxis of human G protein–coupled receptor GPR-9-6/L1.2 transfectants. This activity was blocked by anti–GPR-9-6 monoclonal antibody (mAb) 3C3. GPR-9-6 is expressed on a subset of memory α4β7high intestinal trafficking CD4 and CD8 lymphocytes. In addition, all intestinal lamina propria and intraepithelial lymphocytes express GPR-9-6. In contrast, GPR-9-6 is not displayed on cutaneous lymphocyte antigen–positive (CLA+) memory CD4 and CD8 lymphocytes, which traff

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P. Gnanachandra. "Remarks on rg-compact, gpr-compact and gpr-connected spaces." Malaya Journal of Matematik 3, no. 02 (2015): 207–10. http://dx.doi.org/10.26637/mjm302/011.

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We give some characterizations of rg-compact, gpr-compact and gpr-connected spaces by utilizing rg-open, gpr-open and gpr-closed sets. The paper is closely related to [A.M.Al-Shibani, rg-compact spaces and rg-connected spaces, Mathematica Pannonica, 17/1 (2006), 61-68], [Y.Gnanambal and K.Balachandran, On gpr-continuous functions in topological spaces,Indian .J.Pure appl.Math., 30(6) (1999),581-593] and [P.Gnanachandra et. al., Ultra Scientist, 24(1) A (2012), 185-191]

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Balli, Faruk, Gazi Salah Uddin, and Syed Jawad Hussain Shahzad. "Geopolitical risk and tourism demand in emerging economies." Tourism Economics 25, no. 6 (2019): 997–1005. http://dx.doi.org/10.1177/1354816619831824.

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In this article, we investigate the impact of geopolitical risk (GPR) on international tourism demand in emerging economies. We have found that impact of GPR is not homogeneous for every country in our sample; for example, some countries are affected heavily by GPR and others are mostly immune to GPR shocks. In general, for countries that have attractive tourism destinations, the impact of GPR is minimal, indicating that if international tourists desperately want to go a destination, they do not take GPR seriously. In addition, the tsunami impact of GPR is not the same for all affected countri

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Alla, Anass, Qamar Mesbahi, Elmostafa Gagou, et al. "Micro-morphological characterisation of date palm (Phoenix datylifera L.) pollen and study of the effect of temperature on their germination in vitro." E3S Web of Conferences 632 (2025): 01003. https://doi.org/10.1051/e3sconf/202563201003.

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The date palm (Phoenix dactylifera L.) is a dioecious monocotyledonous plant belonging to the Arecaceae family. The pollen grains of different male date palms exhibit distinct characteristics that influence their pollination potential. This study aims to select high-performing males and determine the optimal temperature for pollen grain germination. Seven male pollinators GP1 to GP7 were selected based on the evaluations of the date palm farmers in the Figuig oasis. The micromorphological parameters and the viability of the pollen grains were determined in vitro. At the turgescence stage of th

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13

Wang, Shilei, Guixian Liu, Guoqing Jing, Qiankuan Feng, Hengbai Liu, and Yunlong Guo. "State-of-the-Art Review of Ground Penetrating Radar (GPR) Applications for Railway Ballast Inspection." Sensors 22, no. 7 (2022): 2450. http://dx.doi.org/10.3390/s22072450.

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In the past 20 years, many studies have been performed on ballast layer inspection and condition evaluation with ground penetrating radar (GPR). GPR is a non-destructive means that can reflect the ballast layer condition (fouling, moisture) by analysing the received signal variation. Even though GPR detection/inspection for ballast layers has become mature, some challenges still need to be stressed and solved, e.g., GPR indicator (for reflecting fouling level) development, quantitative evaluation for ballast fouling levels under diverse field conditions, rapid GPR inspection, and combining ana

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Abhishek, Rangole, De Sampurna, Kuchekar Nilesh, and A. Bazil Raj A. "A Comprehensive Review of Ground Penetrating Radar: Techniques, Applications and Future Directions." International Journal of Engineering Research and Reviews 12, no. 3 (2024): 30–53. https://doi.org/10.5281/zenodo.13842586.

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<strong>Abstract:</strong> Ground Penetrating Radar (GPR) technology has facilitated growth and research in multiple fields. It is a non-invasive method used for sub-surface exploration. GPR systems operate on the principles of Radar Systems, providing large operational flexibility. Archaeology, geophysics, civil engineering, environmental studies and military sectors see a large use of GPR systems. The review paper provides a comprehensive study about the developmental stages of modern GPR systems, GPR system types, applications of GPR systems, existing GPR methodologies and specification ana

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Sudakova, M. S., and M. L. Vladov. "PERSPECTIVE DIRECTIONS OF GROUND PENETRATING RADAR APPLICATION." Moscow University Bulletin. Series 4. Geology, no. 2 (April 28, 2018): 3–12. http://dx.doi.org/10.33623/0579-9406-2018-2-3-12.

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Ground penetrating radar (GPR) became very popular in the last decade in Russian federation. Not only scientific publications have been devoted to GPR but also articles in the press and TV programs on federal and local channels. Three directions of georadiolocation are considered in the article, which seem promising to the authors and will develop in the future: GPR ray tomography, GPR application with other geophysical methods and GPR using in permafrost regions. Examples of application of different methods of GPR data collection and processing are considered.

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Baldus, Christian, and Martin Schmidt-Kessel. "Zehn Jahre GPR." Zeitschrift für Gemeinschaftsprivatrecht 10, no. 1 (2013): 1. http://dx.doi.org/10.1515/gpr.2013.10.1.1.

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Luo, Tess X. H., Wallace W. L. Lai, Ray K. W. Chang, and Dean Goodman. "GPR imaging criteria." Journal of Applied Geophysics 165 (June 2019): 37–48. http://dx.doi.org/10.1016/j.jappgeo.2019.04.008.

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Balasubramanian. "Contra gpr-Continuity." Journal of Advanced Research in Applied Mathematics 5, no. 1 (2013): 17–30. http://dx.doi.org/10.5373/jaram.1385.040412.

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Wang, Yuanzheng, Hui Qin, and Feng Miao. "A Multi-Path Encoder Network for GPR Data Inversion to Improve Defect Detection in Reinforced Concrete." Remote Sensing 14, no. 22 (2022): 5871. http://dx.doi.org/10.3390/rs14225871.

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Ground penetrating radar (GPR) has been extensively used in the routine inspection of reinforced concrete structures. However, the signatures in GPR images are reflected electromagnetic waves rather than their actual shapes. The interpretation of GPR data is a mandatory but time- and labor-consuming task. Furthermore, the rebars in the near-surface of concrete cause clutter in the GPR images, which hinders the interpretation of GPR data. This work presents a deep learning network to invert GPR B-scan images to permittivity maps of subsurface structures. The proposed network has a multi-path en

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20

Zaballos, Ángel, Julio Gutiérrez, Rosa Varona, Carlos Ardavín, and Gabriel Márquez. "Cutting Edge: Identification of the Orphan Chemokine Receptor GPR-9-6 as CCR9, the Receptor for the Chemokine TECK." Journal of Immunology 162, no. 10 (1999): 5671–75. http://dx.doi.org/10.4049/jimmunol.162.10.5671.

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Abstract Thymus-expressed chemokine (TECK) has been reported to chemoattract dendritic cells, thymocytes, and activated macrophages. Here, we show that TECK is a specific agonist for a human orphan receptor called GPR-9-6. We have determined the cDNA sequence of human GPR-9-6 and cloned the corresponding murine cDNA. Human and murine GPR-9-6 expression is very high in the thymus and low in lymph nodes and spleen. RT-PCR analysis of murine GPR-9-6 expression on murine FACS-sorted thymocyte subpopulations showed that this gene is expressed in both immature and mature T cells. Additions of human

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A., Pandharpatte Priyanka, Adake Ashutosh D., Sapkal Neha R, and M. M. Maske. "Review of Applications of Ground Penetrating Radar as an NDT Tool." ASEAN Journal of Science and Engineering 2, no. 2 (2021): 115–28. http://dx.doi.org/10.17509/ajse.v2i2.37975.

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Ground-penetrating radar (also referred to as GPR, ground probing radar, or georadar) is a near-surface geophysical tool with a wide range of applications. Over the past 30 years, GPR has been used successfully to aid in constraining problems in diverse fields such as archaeology, environmental site characterization, glaciology, hydrology, land mine/unexploded ordinance detection, sedimentology, and structural geology. In many cases, however, GPR surveys have been planned or executed with little or no understanding of the physical basis by which GPR operates and is constrained. As a result, ma

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Šarlah, Nikolaj, Tomaž Podobnikar, Tomaž Ambrožič, and Branko Mušič. "Application of Kinematic GPR-TPS Model with High 3D Georeference Accuracy for Underground Utility Infrastructure Mapping: A Case Study from Urban Sites in Celje, Slovenia." Remote Sensing 12, no. 8 (2020): 1228. http://dx.doi.org/10.3390/rs12081228.

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This paper describes in detail the applicability of the developed ground-penetrating radar (GPR) model with a kinematic GPR and self-tracking (robotic) terrestrial positioning system (TPS) surveying setup (GPR-TPS model) for the acquisition, processing and visualisation of underground utility infrastructure (UUI) in a real urban environment. The integration of GPR with TPS can significantly improve the accuracy of UUI positioning in a real urban environment by means of efficient control of GPR trajectories. Two areas in the urban part of Celje in Slovenia were chosen. The accuracy of the kinem

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Yang, Yong Qing. "The Application Research on Three-Dimensional GPR Image Used in Grouting Effect Evaluation of Subgrade Void." Advanced Materials Research 1065-1069 (December 2014): 725–32. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.725.

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On the basis of the GPR method principle, data acquisition and processing, this paper mainly discusses two-dimensional GPR profiles and three-dimensional GPR images through GPR detection example about the voids of highway bridge head subgrade and the grouting distribution. Three-dimensional images accurately and directly evaluate the grouting effect. Thus it illustrates that GPR used to detect the voids of highway bridge head roadbed and the grouting distribution is an effective method.

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Kang, Man-Sung, and Yun-Kyu An. "Frequency–Wavenumber Analysis of Deep Learning-based Super Resolution 3D GPR Images." Remote Sensing 12, no. 18 (2020): 3056. http://dx.doi.org/10.3390/rs12183056.

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This paper proposes a frequency–wavenumber (f–k) analysis technique through deep learning-based super resolution (SR) ground penetrating radar (GPR) image enhancement. GPR is one of the most popular underground investigation tools owing to its nondestructive and high-speed survey capabilities. However, arbitrary underground medium inhomogeneity and undesired measurement noises often disturb GPR data interpretation. Although the f–k analysis can be a promising technique for GPR data interpretation, the lack of GPR image resolution caused by the fast or coarse spatial scanning mechanism in reali

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Tercier, Paulette, Rosemary Knight, and Harry Jol. "A comparison of the correlation structure in GPR images of deltaic and barrier‐spit depositional environments." GEOPHYSICS 65, no. 4 (2000): 1142–53. http://dx.doi.org/10.1190/1.1444807.

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We have used geostatistical analysis of radar reflections to quantify the correlation structures found in 2-D ground‐penetrating radar (GPR) images. We find that the experimental semivariogram, the product of the geostatistical analysis of the GPR data, is well‐defined and can be modeled using standard geostatistical models to obtain an estimate of the range or correlation length, and the maximum correlation direction, in the 2-D GPR image. When we compare the results from geostatistical analysis of GPR data from selected deltaic and barrier‐spit depositional environments we find different cor

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Nahar, Ravenny Sandin, Kok Mun Ng, Fadhlan Hafizhelmi Kamaruzaman, Noorfadzli Abdul Razak, and Juliana Johari. "Modelling and estimating trajectory points from RTK-GNSS based on an integrated modelling approach." Indonesian Journal of Electrical Engineering and Computer Science 34, no. 1 (2024): 162. http://dx.doi.org/10.11591/ijeecs.v34.i1.pp162-172.

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The sparse Gaussian process regression (GPR) has been used to model trajectory data from Real time kinematics-global navigation satellite system (RTK-GNSS). However, upon scrutinizing the model residuals; the sparse GPR model poorly fits the data and exhibits presence of correlated noise. This work attempts to address these issues by proposing an integrated modeling approach called GPR-LR-ARIMA where the sparse GPR was integrated with the linear regression with autoregressive integrated moving average errors (LR-ARIMA) to further enhance the description of the trajectory data. In this integrat

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Wang, Chongqin, Yi Guan, Minghe Chi, et al. "GPR-TSBiNet: An Information Gradient Enrichment Model for GPR B-Scan Small Target Detection." Sensors 25, no. 7 (2025): 2223. https://doi.org/10.3390/s25072223.

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Accurate detection of underground grounding lines remains a significant technical challenge due to their deep burial and small cross-sectional dimensions, which cause signal scattering in heterogeneous soil media. This results in blurred features in GPR B-scan images, impeding reliable target identification. To address this limitation, we propose GPR-TSBiNet, an architecture incorporating two key model innovations. We introduce GPR-Transformer (GPR-Trans), a multi-branch backbone network specifically designed for GPR B-scan processing. In the neck stage, we develop the Spatial-Depth Converted

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Nahar, Ravenny Sandin, Kok Mun Ng, Fadhlan Hafizhelmi Kamaruzaman, Noorfadzli Abdul Razak, and Juliana Johari. "Modelling and estimating trajectory points from RTK-GNSS based on an integrated modelling approach." Indonesian Journal of Electrical Engineering and Computer Science 34, no. 1 (2024): 162–72. https://doi.org/10.11591/ijeecs.v34.i1.pp162-172.

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The sparse Gaussian process regression (GPR) has been used to model trajectory data from Real time kinematics-global navigation satellite system (RTK-GNSS). However, upon scrutinizing the model residuals; the sparse GPR model poorly fits the data and exhibits presence of correlated noise. This work attempts to address these issues by proposing an integrated modeling approach called GPR-LR-ARIMA where the sparse GPR was integrated with the linear regression with autoregressive integrated moving average errors (LR-ARIMA) to further enhance the description of the trajectory data. In this integrat

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Chengke, Zhang, Yu Junping, Wu Jiangpeng, Li Zhiqiang, and Zhu Liqing. "Application of Ground-Penetrating Radar Broadband Antenna in Underground Detection." E3S Web of Conferences 198 (2020): 04005. http://dx.doi.org/10.1051/e3sconf/202019804005.

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When GPR is detecting unknown objects underground, different antenna working frequency, different antenna size and different antenna internal structure will affect the final data quality and ultimately affect the detection accuracy of GPR. Therefore, when actualizing and evaluating the uwb signal of GPR electromagnetic wave, the electromagnetic properties of underground medium should be fully considered, and the influence of relevant parameters of GPR antenna on the transmitted and received electromagnetic signals should be analyzed by using numerical analysis method. This paper mainly describ

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Ferdian, Reza Achmad, and Muhammad Darwinsyah. "EFEKTIVITAS GOVERNMENT PUBLIC RELATION TELEVISION DI INDONESIA." Inter Community: Journal of Communication Empowerment 4, no. 1 (2022): 27. http://dx.doi.org/10.33376/ic.v4i1.1122.

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GPR TV merupakan media penyiaran televisi yang dimiliki oleh pemerintah terutama Kominfo. Kominfo pada akhirnya secara serentak memberitahukan pada masyarakat akan hadirnya Government Public Relation Television (GPR TV) pada tanggal 10 Desember 2018. Kehadiran televisi pemerintah merupakan sumber daya provinsi dalam memajukan inovasi data serta visi dan misi setiap daerah, yang diharapkan televisi pemerintah daerah dapat menjadi pusat informasi dan komunikasi dalam rangka yang besar, dengan pengelolaan yang akurat ke daerah-daerah. Tujuan penelitian ini adalah untuk mengetahui seberapa jauh pe

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Tabarro, P. G., J. Pouliot, R. Fortier, and L. M. Losier. "A WEBGIS TO SUPPORT GPR 3D DATA ACQUISITION: A FIRST STEP FOR THE INTEGRATION OF UNDERGROUND UTILITY NETWORKS IN 3D CITY MODELS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W7 (October 23, 2017): 43–48. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w7-43-2017.

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For the planning and sustainable development of large cities, it is critical to accurately locate and map, in 3D, existing underground utility networks (UUN) such as pipelines, cables, ducts, and channels. An emerging non-invasive instrument for collecting underground data such as UUN is the ground-penetrating radar (GPR). Although its capabilities, handling GPR and extracting relevant information from its data are not trivial tasks. For instance, both GPR and its complimentary software stack provide very few capabilities to co-visualize GPR collected data and other sources of spatial data suc

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Annan, A. Peter, Nectaria Diamanti, J. David Redman, and Steven R. Jackson. "Ground-penetrating radar for assessing winter roads." GEOPHYSICS 81, no. 1 (2016): WA101—WA109. http://dx.doi.org/10.1190/geo2015-0138.1.

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Since its inception, ground penetrating radar (GPR) has been a very effective method for examining ice structure. The vast majority of early GPR use was focused on answering questions related to glaciology and ice sheets. More recently, as more and more activity occurs in arctic areas, managing ice structures for a variety of applications has created new uses for GPR. For the past 30–40 years, GPR use for assessing transportation routes over lakes, rivers, and sea ice has been reported, but, only in the last decade has routine application occurred. We have focused on the application of GPR for

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Zhang, Di, Dinghan Jia, Lili Ren, Jiacun Li, Yan Lu, and Haiwei Xu. "Multisensor and Multiscale Data Integration Method of TLS and GPR for Three-Dimensional Detailed Virtual Reconstruction." Sensors 23, no. 24 (2023): 9826. http://dx.doi.org/10.3390/s23249826.

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Integrated TLS and GPR data can provide multisensor and multiscale spatial data for the comprehensive identification and analysis of surficial and subsurface information, but a reliable systematic methodology associated with data integration of TLS and GPR is still scarce. The aim of this research is to develop a methodology for the data integration of TLS and GPR for detailed, three-dimensional (3D) virtual reconstruction. GPR data and high-precision geographical coordinates at the centimeter level were simultaneously gathered using the GPR system and the Global Navigation Satellite System (G

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Gong, Zhimin, and Huaiqing Zhang. "Research on GPR image recognition based on deep learning." MATEC Web of Conferences 309 (2020): 03027. http://dx.doi.org/10.1051/matecconf/202030903027.

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It is difficult for traditional image recognition methods to accurately identify ground penetrating radar (GPR) images. This paper proposes a deep-learning based Faster R-CNN algorithm for the automatic classification and recognition of GPR images. Firstly, GPR images with different features were obtained by using gprMax, a professional GPR simulation software. Then, the feature of the target in the image was taken as the recognition object and the data set was made. Finally, Faster R-CNN’s recognition ability of GPR images was analyzed from various accuracy, average accuracy and other indicat

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Trinks, Immo, and Alois Hinterleitner. "Beyond Amplitudes: Multi-Trace Coherence Analysis for Ground-Penetrating Radar Data Imaging." Remote Sensing 12, no. 10 (2020): 1583. http://dx.doi.org/10.3390/rs12101583.

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Under suitable conditions, ground-penetrating radar (GPR) measurements harbour great potential for the non-invasive mapping and three-dimensional investigation of buried archaeological remains. Current GPR data visualisations almost exclusively focus on the imaging of GPR reflection amplitudes. Ideally, the resulting amplitude maps show subsurface structures of archaeological interest in plan view. However, there exist situations in which, despite the presence of buried archaeological remains, hardly any corresponding anomalies can be observed in the GPR time- or depth-slice amplitude images.

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Saeheaw, Teerapun. "Hybrid Gaussian Process Regression Models for Accurate Prediction of Carbonation-Induced Steel Corrosion in Cementitious Mortars." Buildings 15, no. 14 (2025): 2464. https://doi.org/10.3390/buildings15142464.

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Steel corrosion prediction in concrete infrastructure remains a critical challenge for durability assessment and maintenance planning. This study presents a comprehensive framework integrating domain expertise with advanced machine learning for carbonation-induced corrosion prediction. Four Gaussian Process Regression (GPR) variants were systematically developed: Baseline GPR with manual optimization, Expert Knowledge GPR employing domain-driven dual-kernel architecture, GPR with Automatic Relevance Determination (GPR-ARD) for feature selection, and GPR-OptCorrosion featuring specialized multi

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Lestari, Putri Cahaya, Erwin Renda Wardana, Rendy Muslim Arifin, Zaki Fadillah, , Rizky Augusta Gozzal, and Barokatun Hasanah7. "Rancang Bangun Sistem Penggerak Pada GPR (Ground Penetrating Radar)." EPSILON: Journal of Electrical Engineering and Information Technology 23, no. 1 (2025): 44–59. https://doi.org/10.55893/epsilon.v23i1.131.

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Ground Penetrating Radar (GPR) telah menjadi alat penting dalam pemetaan dan pencitraan bawah permukaan tanah. Namun, untuk meningkatkan presisi dan kontrol dalam penggunaan GPR, dibutuhkan sistem penggerak GPR menggunakan motor stepper. Penelitian ini bertujuan untuk merancang dan membangun sistem penggerak yang memanfaatkan teknologi motor stepper. Penelitian ini fokus pada pentingnya kontrol yang tepat terhadap pergerakan GPR untuk meningkatkan akurasi pemindaian dan kualitas citra. Dengan mengintegrasikan motor stepper sebagai bagian dari sistem penggerak, penelitian ini berupaya meningkat

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García-Fernández, María, Guillermo Álvarez-Narciandi, Yuri Álvarez López, and Fernando Las-Heras Andrés. "Analysis and Validation of a Hybrid Forward-Looking Down-Looking Ground Penetrating Radar Architecture." Remote Sensing 13, no. 6 (2021): 1206. http://dx.doi.org/10.3390/rs13061206.

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Ground Penetrating Radar (GPR) has proved to be a successful technique for the detection of landmines and Improvised Explosive Devices (IEDs) buried in the ground. In the last years, novel architectures for safe and fast detection, such as those based on GPR systems onboard Unmanned Aerial Vehicles (UAVs), have been proposed. Furthermore, improvements in GPR hardware and signal processing techniques have resulted in a more efficient detection. This contribution presents an experimental validation of a hybrid Forward-Looking–Down-Looking GPR architecture. The main goal of this architecture is t

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Zhang, Geng-lin, Shi-cheng Xu, Jie Zeng, et al. "Optimizing the Use of the Gamma-Glutamyl Transpeptidase-to-Platelet Ratio and Transient Elastography to Identify Liver Cirrhosis in Patients with Chronic Hepatitis B Concurrent with Nonalcoholic Fatty Liver Disease." Disease Markers 2019 (December 5, 2019): 1–11. http://dx.doi.org/10.1155/2019/2585409.

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Background and Aim. Little information is available about the assessment and optimal use of the gamma-glutamyl transpeptidase-to-platelet ratio (GPR) and transient elastography (TE) in predicting liver cirrhosis in patients with chronic hepatitis B (CHB) and concurrent nonalcoholic fatty liver disease (NAFLD). This study is aimed at comparing their diagnostic performances and developing an optimal approach for predicting liver cirrhosis in CHB patients with NAFLD. Methods. Consecutive CHB patients with NAFLD were enrolled. The GPR was calculated, and TE was performed using liver biopsy as a re

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Alshamy, Hussain, Jafar Sadahb, and Thamir Saeed. "Different techniques in detection of buried objects using ground-penetrating radar." Al-Qadisiyah Journal for Engineering Sciences 14, no. 2 (2022): 223–31. http://dx.doi.org/10.30772/qjes.v14i4.892.

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The application of ground -penetrating radar (GPR) is addressed in this study, with the main application being the detection and classification of an underground target using GPR technology. This study focuses on the important task of GPR that needs to be done to improve the detection process, as well as ways to eliminate unwanted signals from the GPR image. The accuracy of detecting buried objects using GPR largely depends on the algorithms used, as the smart algorithm technology has proven to be the most accurate, effective, and cost-effective

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Anggraini, Yensy Ina, Lilik Ismawati, and Habib Nur Falani. "Pemanfaatan Teknologi Georadar Dalam Mendukung Kegiatan Eksplorasi Mineral Di Indonesia." Jurnal Teknologi Sumberdaya Mineral (JENERAL) 4, no. 1 (2023): 27. http://dx.doi.org/10.19184/jeneral.v4i1.35521.

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Tahap eksplorasi merupakan kegiatan awal yang dilakukan dalam menentukan jumlah sumberdaya atau cadangan yang diambil. Metode yang digunakan dalam tahap eksplorasi menggunakan salah satu alat yang dinamakan Ground Penetrating Radar (GPR). Penggunaan alat GPR bertujuan untuk memprediksi jumlah sumberdaya atau cadangan yang terpendam di bawah permukaan, namun dalam penggunaan GPR sendiri memiliki keterbatasan kedalaman dalam melakukan penelitian. Kedalaman penetrasi dibatasi oleh adanya mineralogi tanah liat atau pori-pori cairan dengan konduktivitas tinggi yang dapat menghambat pencapaian resol

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Mills, Leslie Odartey, and Nii Attoh-Okine. "Analysis of ground penetrating radar data using hierarchical Markov Chain Monte Carlo simulation." Canadian Journal of Civil Engineering 41, no. 1 (2014): 9–16. http://dx.doi.org/10.1139/cjce-2012-0462.

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Ground penetrating radar (GPR) is a geophysical method used in highway maintenance to determine subsurface conditions within the right-of-way. GPR operates by using short-pulse radiation of radio-frequency electromagnetic energy to record dissimilarities in electrical properties of subsurface materials. As such, GPR results are susceptible to the transmission frequency used and the inherent properties of different subsurface materials. Uncertainty due to these susceptibilities can lead to ambiguity in the interpretation of GPR data. To distinguish heterogeneity from uncertainty, this paper mod

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Manwani, Akash, Samra Shabbir, Aneeta Devi, and Waseem Haider. "Design of Ground Penetrating [GP] Antenna." Journal of Applied Engineering & Technology (JAET) 4, no. 2 (2020): 48–56. http://dx.doi.org/10.55447/jaet.04.02.35.

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GPR is an advanced, non-invasive sub-surface imaging technique that typically uses short pulses of electromagnetic energy to detect the buried object in the ground. UWB antennas are used in GPR for transmission and reception of electromagnetic pulses. the main performance originate in the performance of GPR for finding the buried objects is the reflection from the antenna itself; which furthered the problem in identification of the object. reflections in the antenna itself can be analyzed by studying time-domain behavior of the antenna.This paper present the theoretical studies of the design o

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Cheng, Pengfei, Mengzhen Wang, Kanyong Li, Baekryul Choi, and Wenliang Chen. "The impact mechanism of geopolitical risks on ESG performance: The moderating effects of investor attention and government subsidies." PLOS ONE 20, no. 1 (2025): e0311659. https://doi.org/10.1371/journal.pone.0311659.

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The impact of geopolitical risks (GPR) on enterprises is significant, yet the existing literature lacks a comprehensive understanding of how GPR affects environmental, social, and governance (ESG) performance. This study addresses this gap by analysing data from Chinese enterprises over the period 2009 to 2021. It empirically examines the impact of GPR on ESG performance and explores the underlying mechanisms. Specifically, the analysis considers the roles of investor attention and government subsidies as moderating factors. The results indicate that GPR inhibits corporate ESG performance. Sta

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Ren, Qiuyang, Yanhui Wang, and Quang P. Ha. "Automatic Recognition and Segmentation of Overlapped GPR Target Signatures." E3S Web of Conferences 626 (2025): 03003. https://doi.org/10.1051/e3sconf/202562603003.

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Ground penetrating radar (GPR) has been widely utilized for non-destructive inspection of civil infrastructure systems such as bridges and tunnels. However, the identification of GPR signatures poses significant challenges due to the overlapped multiple objects. To overcome the obstacle, we proposed an innovative Mask R-CNN based network considering spatial relationship between GPR signatures. Firstly, to capture the spatial relationship of overlapping signatures, we introduced an improved intersection over union considering central distance and aspect ratio between GPR signatures. Secondly, w

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Rodrigues, Brunela Pollastrelli, Christopher Adam Senalik, Xi Wu, and James Wacker. "Use of Ground Penetrating Radar in the Evaluation of Wood Structures: A Review." Forests 12, no. 4 (2021): 492. http://dx.doi.org/10.3390/f12040492.

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This paper is a review of published studies involving the use of ground penetrating radar (GPR) on wood structures. It also contains background information to help the reader understand how GPR functions. The use of GPR on wood structures began to grow in popularity at the turn of the millennium. GPR has many characteristics that make it attractive as an inspection tool for wood: it is faster than many acoustic and stress wave techniques; it does not require the use of a couplant; while it can also detect the presence of moisture. Moisture detection is of prime concern, and several researchers

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Wu, Xiao-Yu, Yao-Kun Zhuang, Yong Cai, et al. "Serum glucose and potassium ratio as a predictive factor for prognosis of acute intracerebral hemorrhage." Journal of International Medical Research 49, no. 4 (2021): 030006052110096. http://dx.doi.org/10.1177/03000605211009689.

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Objective The serum glucose/potassium ratio (GPR) is a potential prognostic predictor for acute brain injury-related diseases. We calculated the serum GPR in patients with acute intracerebral hemorrhage (ICH) and explored its prognostic value for long-term prognoses and ICH severity. Methods This retrospective cohort study consecutively included 92 patients with ICH and 92 healthy controls. The National Institutes of Health Stroke Scale (NIHSS) score, Glasgow coma scale (GCS) score, and hematoma volume were used to assess severity. A modified Rankin Scale score > 2 at 90 days post-stroke wa

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Yue, Yunpeng, Hai Liu, Xu Meng, Yinguang Li, and Yanliang Du. "Generation of High-Precision Ground Penetrating Radar Images Using Improved Least Square Generative Adversarial Networks." Remote Sensing 13, no. 22 (2021): 4590. http://dx.doi.org/10.3390/rs13224590.

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Deep learning models have achieved success in image recognition and have shown great potential for interpretation of ground penetrating radar (GPR) data. However, training reliable deep learning models requires massive labeled data, which are usually not easy to obtain due to the high costs of data acquisition and field validation. This paper proposes an improved least square generative adversarial networks (LSGAN) model which employs the loss functions of LSGAN and convolutional neural networks (CNN) to generate GPR images. This model can generate high-precision GPR data to address the scarci

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Alqahtani, Abdullah, and Michael Taillard. "Global energy and geopolitical risk: behavior of oil markets." International Journal of Energy Sector Management 14, no. 2 (2019): 358–71. http://dx.doi.org/10.1108/ijesm-04-2019-0005.

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Purpose The question being assessed is whether changes in the degree of global geopolitical risk (GPR), as defined by the framework developed by Iacoviello (2018), can be used to improve allocative efficiency, thereby increasing investment returns on oil commodities. Design/methodology/approach Using the linear and nonlinear model, this paper analyzes the impact of GPR on returns of oil prices (BRENT, WTI and Organization of Petroleum Exporting Countries), as well as the short- and long-run relationship between GPR and oil prices. Findings The results of the impulse response function indicates

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Jannah, Afni Nur, Eksi Galih Kenya Paramita, Syabibah Zakiyya Zukhrufah, Juan Pandu Gya Nur Rochman, and Firmansyah Maulana Azhali. "A Comparative Study of Ground-Based and Drone-Based GPR: Opportunities, Challenges, and Applications in Bromo, Indonesia." BIO Web of Conferences 157 (2025): 05004. https://doi.org/10.1051/bioconf/202515705004.

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A drone-based GPR offers improved mobility and accessibility for subsurface exploration while delivering high-resolution detection of objects and soil layers, particularly in challenging areas. This study compares the performance and limitations of ground-based and drone-based GPR by analyzing their responses to surface condition using GPR radargrams. Data were collected from the Bromo-Tengger Caldera, East Java, Indonesia, using a 150 MHz antenna for drone-based GPR and a 500 MHz antenna for ground-based GPR. Data processing included filters like static correction, bandpass, gain, background

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