Pub Date : 2025-03-13DOI: 10.1109/JPHOTOV.2025.3545820
Rajiv Daxini;Kevin S. Anderson;Joshua S. Stein;Marios Theristis
Understanding the impact of variation in the solar spectrum on photovoltaic (PV) device output is critical for accurate and reliable PV performance modeling. While previous studies have examined these spectral effects extensively at the module level, this study examines the spectral impact at the cell level and how subsequent current mismatch can influence module-level output. Cell-level external quantum efficiency (EQE) data from 11 new commercial PV modules are analyzed. The module power output, as determined by the spectral mismatch factor of the module-limiting cell, is computed using the measured cell EQE data in conjunction with gridded meteorological and spectral irradiance data simulated at an approximately 20 $mathbf{mathrm{km}}$ resolution across the contiguous USA over one year. This study finds only a small variation in annualized module output of around 0.2% as a result of intramodule EQE variation. However, these losses exhibit significant seasonality, varying by up to around four times the annualized energy difference on a month-to-month basis. The seasonality of the energy loss has implications for subannual PV performance analysis applications such as capacity testing.
{"title":"Photovoltaic Module Spectral Mismatch Losses Due to Cell-Level EQE Variation","authors":"Rajiv Daxini;Kevin S. Anderson;Joshua S. Stein;Marios Theristis","doi":"10.1109/JPHOTOV.2025.3545820","DOIUrl":"https://doi.org/10.1109/JPHOTOV.2025.3545820","url":null,"abstract":"Understanding the impact of variation in the solar spectrum on photovoltaic (PV) device output is critical for accurate and reliable PV performance modeling. While previous studies have examined these spectral effects extensively at the module level, this study examines the spectral impact at the cell level and how subsequent current mismatch can influence module-level output. Cell-level external quantum efficiency (EQE) data from 11 new commercial PV modules are analyzed. The module power output, as determined by the spectral mismatch factor of the module-limiting cell, is computed using the measured cell EQE data in conjunction with gridded meteorological and spectral irradiance data simulated at an approximately 20 <inline-formula><tex-math>$mathbf{mathrm{km}}$</tex-math></inline-formula> resolution across the contiguous USA over one year. This study finds only a small variation in annualized module output of around 0.2% as a result of intramodule EQE variation. However, these losses exhibit significant seasonality, varying by up to around four times the annualized energy difference on a month-to-month basis. The seasonality of the energy loss has implications for subannual PV performance analysis applications such as capacity testing.","PeriodicalId":445,"journal":{"name":"IEEE Journal of Photovoltaics","volume":"15 3","pages":"458-464"},"PeriodicalIF":2.5,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10925465","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We propose and experimentally demonstrate a chaotic Brillouin optical correlation-domain analysis (BOCDA) based on a differential correlation demodulation configuration. Multiple correlation peak (CP) localization is achieved by the gain of the central CP (CCP) and that of the difficult-to-eliminate time-delay signature (TDS) peak. The probe differential scheme is introduced and simulated to eliminate the influence of power superposition and obtain the optimized gain distribution. On this basis, the gain interval extraction method is proposed to separate the gain of CCP and TDS positions, and the corresponding Brillouin gain spectra are obtained in simulation and experiment. Ultimately, the synchronous localization of the CCP and TDS with a sensing distance of 410 m and a spatial resolution of less than 8 cm is experimentally demonstrated.
{"title":"Chaotic Brillouin Optical Correlation-Domain Analysis Based on Differential Correlation Demodulation","authors":"Haochen Huang;Yahui Wang;Lintao Niu;Jing Chen;Haokun Zhang;Mingjiang Zhang","doi":"10.1109/JSEN.2025.3548641","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3548641","url":null,"abstract":"We propose and experimentally demonstrate a chaotic Brillouin optical correlation-domain analysis (BOCDA) based on a differential correlation demodulation configuration. Multiple correlation peak (CP) localization is achieved by the gain of the central CP (CCP) and that of the difficult-to-eliminate time-delay signature (TDS) peak. The probe differential scheme is introduced and simulated to eliminate the influence of power superposition and obtain the optimized gain distribution. On this basis, the gain interval extraction method is proposed to separate the gain of CCP and TDS positions, and the corresponding Brillouin gain spectra are obtained in simulation and experiment. Ultimately, the synchronous localization of the CCP and TDS with a sensing distance of 410 m and a spatial resolution of less than 8 cm is experimentally demonstrated.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 8","pages":"13033-13038"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The advancement of hydrogel-based epidermal sensors that integrate multifunctionality, high transparency, rapid processing, and heightened sensitivity is of significant interest. Herein, we present an efficient approach for the fabrication of flexible dual-mode epidermal sensors through the ultraviolet (UV)-curing 3-D printing of polyacrylamide (PAM)-based ionic hydrogels. The hydrogel precursor incorporates sodium dodecyl sulfate (SDS) monomers to augment the water dispersibility of the 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) photoinitiator, thereby substantially increasing the photocuring efficiency of the ionic hydrogel. As a result, the distinctive surface microstructures of PAM-based ionic hydrogels can be engineered for sensors with varying sensing modalities to improve detection performance. The piezoelectric tactile sensor, incorporating a concentric ring microstructure, demonstrates a sensitivity coefficient of $1.39~text {mV}cdot text { kPa}^{-{1}}$ . Conversely, the resistive strain sensor, characterized by a high-density reticular hollow structure, exhibits the highest gauge factor of 24.87. Furthermore, each sensor modality demonstrates excellent temporal response and stability, confirming its applicability in motion monitoring and Morse code transmission.
{"title":"3-D Printing of PAM Hydrogel-Based Iontronic for Dual-Mode Epidermal Sensors","authors":"Yue Zhang;Ao Lan;Yuanhao Xia;Xiangyu Yin;Bingwei He;Pengli Zhu","doi":"10.1109/JSEN.2025.3549188","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3549188","url":null,"abstract":"The advancement of hydrogel-based epidermal sensors that integrate multifunctionality, high transparency, rapid processing, and heightened sensitivity is of significant interest. Herein, we present an efficient approach for the fabrication of flexible dual-mode epidermal sensors through the ultraviolet (UV)-curing 3-D printing of polyacrylamide (PAM)-based ionic hydrogels. The hydrogel precursor incorporates sodium dodecyl sulfate (SDS) monomers to augment the water dispersibility of the 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) photoinitiator, thereby substantially increasing the photocuring efficiency of the ionic hydrogel. As a result, the distinctive surface microstructures of PAM-based ionic hydrogels can be engineered for sensors with varying sensing modalities to improve detection performance. The piezoelectric tactile sensor, incorporating a concentric ring microstructure, demonstrates a sensitivity coefficient of <inline-formula> <tex-math>$1.39~text {mV}cdot text { kPa}^{-{1}}$ </tex-math></inline-formula>. Conversely, the resistive strain sensor, characterized by a high-density reticular hollow structure, exhibits the highest gauge factor of 24.87. Furthermore, each sensor modality demonstrates excellent temporal response and stability, confirming its applicability in motion monitoring and Morse code transmission.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 8","pages":"12616-12626"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-13DOI: 10.1109/JSEN.2025.3548912
Henry E. Ventura-Grandez;Jonathan Quevedo;Itamar Salazar-Reque;Maria Armas-Alvarado;Luz Adanaque-Infante;Ruth Rubio-Noriega
Water pH measurement is vital as it provides fundamental information about its quality and suitability for agriculture, aquatic ecosystems, industry, and human consumption. Each of these applications may require numerical readings of acidity or alkalinity, preferably using tools that are already ubiquitous, such as cellphones. This work presents a microfluidic lab-on-a-chip system to measure the pH of liquid samples. We used purple cabbage as the colorimetric reagent to produce a 2640-image dataset with pH levels in the range of [2–12] on a polydimethylsiloxane (PDMS) microfluidic recipient. We fed our dataset to our parameterized deep neural network (DNN) to classify our samples and found an accuracy of 99.7%. In addition, we developed a mobile application with an easy-to-use graphic user interface that recognizes the microfluidic device shape, classifies the image’s color, and returns the pH level.
{"title":"Deep Neural Network-Assisted Microfluidic pH Sensor","authors":"Henry E. Ventura-Grandez;Jonathan Quevedo;Itamar Salazar-Reque;Maria Armas-Alvarado;Luz Adanaque-Infante;Ruth Rubio-Noriega","doi":"10.1109/JSEN.2025.3548912","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3548912","url":null,"abstract":"Water pH measurement is vital as it provides fundamental information about its quality and suitability for agriculture, aquatic ecosystems, industry, and human consumption. Each of these applications may require numerical readings of acidity or alkalinity, preferably using tools that are already ubiquitous, such as cellphones. This work presents a microfluidic lab-on-a-chip system to measure the pH of liquid samples. We used purple cabbage as the colorimetric reagent to produce a 2640-image dataset with pH levels in the range of [2–12] on a polydimethylsiloxane (PDMS) microfluidic recipient. We fed our dataset to our parameterized deep neural network (DNN) to classify our samples and found an accuracy of 99.7%. In addition, we developed a mobile application with an easy-to-use graphic user interface that recognizes the microfluidic device shape, classifies the image’s color, and returns the pH level.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 8","pages":"12609-12615"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-13DOI: 10.1109/JSEN.2025.3549027
Yu Wang;Wenzhe Zhang;Shengwu Zhao;Zhihong Deng
Gravity disturbance compensation technology is an important means to further enhance the positioning accuracy of high-precision inertial navigation systems (INSs). In response to the challenges faced by traditional gravity disturbance acquisition methods, which are computationally complex and time-consuming, this article proposes a gravity disturbance calculation and compensation method based on carrier motion constraints. First, using velocity information as a constraint, a conversion model is constructed for the low-frequency signal of gravity disturbance to calculate the low-order spherical harmonic model. This model significantly reduces the time cost required for the gravity disturbance model computation. Second, addressing the misalignment between the actual navigation coordinate system and the ideal navigation coordinate system caused by gravity disturbances, a coordinate system correction algorithm based on the direction cosine matrix of disturbances is proposed. This algorithm enhances the positioning accuracy and reliability of high-precision INSs. Experimental results show that the proposed low-order gravity disturbance compensation algorithm based on carrier motion constraints improves the positioning accuracy by 27.89% compared to traditional algorithms while reducing computation time by 64.84%. This meets the real-time positioning requirements for long-distance navigation conditions, especially suited for UUVs, AUVs, and submarine platforms with limited computational resources, as it optimizes processing efficiency while maintaining high accuracy.
{"title":"A Low-Order Gravity Disturbance Compensation Algorithm Based on Carrier Motion Constraints","authors":"Yu Wang;Wenzhe Zhang;Shengwu Zhao;Zhihong Deng","doi":"10.1109/JSEN.2025.3549027","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3549027","url":null,"abstract":"Gravity disturbance compensation technology is an important means to further enhance the positioning accuracy of high-precision inertial navigation systems (INSs). In response to the challenges faced by traditional gravity disturbance acquisition methods, which are computationally complex and time-consuming, this article proposes a gravity disturbance calculation and compensation method based on carrier motion constraints. First, using velocity information as a constraint, a conversion model is constructed for the low-frequency signal of gravity disturbance to calculate the low-order spherical harmonic model. This model significantly reduces the time cost required for the gravity disturbance model computation. Second, addressing the misalignment between the actual navigation coordinate system and the ideal navigation coordinate system caused by gravity disturbances, a coordinate system correction algorithm based on the direction cosine matrix of disturbances is proposed. This algorithm enhances the positioning accuracy and reliability of high-precision INSs. Experimental results show that the proposed low-order gravity disturbance compensation algorithm based on carrier motion constraints improves the positioning accuracy by 27.89% compared to traditional algorithms while reducing computation time by 64.84%. This meets the real-time positioning requirements for long-distance navigation conditions, especially suited for UUVs, AUVs, and submarine platforms with limited computational resources, as it optimizes processing efficiency while maintaining high accuracy.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 8","pages":"13742-13752"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-13DOI: 10.1109/JSEN.2025.3549141
Yunfei Guo;Hao Zhang;Boting Lin;Hua Su;Yun Chen
To perform multiview (MV) multiextended target tracking (METT) with occlusion, a Gaussian belief propagation (GaBP)-based MV fusion (GaBP-MVF) algorithm is proposed. A concept of “virtual target” is presented to describe the state of an unobstructed part of the target. The “virtual targets” generate the “partial measurements” affected by occlusions through a spatial measurement model. Subsequently, the closed-form joint posterior probability density function (pdf) of virtual targets is formulated. After factorizing the pdf, a factor graph-based GaBP algorithm is derived for moment estimation of virtual targets’ states. Lastly, sensor-derived estimates are regarded as local estimates and forwarded to a fusion center for updating the global estimate. The virtual measurements are generated by a virtual measurement model (VMM) using the predicted global estimate. Then, the global estimate is updated by minimizing the distance between features extracted from virtual measurements and local estimates. The effectiveness of the proposed algorithm is evaluated in simulation and experiment.
{"title":"Gaussian Belief Propagation-Based Multiview Multiextended Target Tracking With Occlusion","authors":"Yunfei Guo;Hao Zhang;Boting Lin;Hua Su;Yun Chen","doi":"10.1109/JSEN.2025.3549141","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3549141","url":null,"abstract":"To perform multiview (MV) multiextended target tracking (METT) with occlusion, a Gaussian belief propagation (GaBP)-based MV fusion (GaBP-MVF) algorithm is proposed. A concept of “virtual target” is presented to describe the state of an unobstructed part of the target. The “virtual targets” generate the “partial measurements” affected by occlusions through a spatial measurement model. Subsequently, the closed-form joint posterior probability density function (pdf) of virtual targets is formulated. After factorizing the pdf, a factor graph-based GaBP algorithm is derived for moment estimation of virtual targets’ states. Lastly, sensor-derived estimates are regarded as local estimates and forwarded to a fusion center for updating the global estimate. The virtual measurements are generated by a virtual measurement model (VMM) using the predicted global estimate. Then, the global estimate is updated by minimizing the distance between features extracted from virtual measurements and local estimates. The effectiveness of the proposed algorithm is evaluated in simulation and experiment.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 8","pages":"14036-14048"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-12DOI: 10.1109/MEI.2025.10924646
The IEEE Young Professionals (YP) Hall of Fame Award celebrates the most dynamic and impactful groups worldwide, highlighting their innovative activities and contributions. Each year, up to two Affinity Groups and two Society or Council Groups are honored with this prestigious recognition. Award winners receive a commemorative plaque and a $500 cash prize to support future initiatives.
{"title":"Bulletin Board: The DEIS-YP Wins the 2024 IEEE Young Professionals Hall of Fame Award","authors":"","doi":"10.1109/MEI.2025.10924646","DOIUrl":"https://doi.org/10.1109/MEI.2025.10924646","url":null,"abstract":"The IEEE Young Professionals (YP) Hall of Fame Award celebrates the most dynamic and impactful groups worldwide, highlighting their innovative activities and contributions. Each year, up to two Affinity Groups and two Society or Council Groups are honored with this prestigious recognition. Award winners receive a commemorative plaque and a $500 cash prize to support future initiatives.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 2","pages":"45-45"},"PeriodicalIF":2.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10924646","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-12DOI: 10.1109/MEI.2025.10924640
Villgot Englund, age 47, passed away unexpectedly in his sleep on June 7, 2024. He was an expert in Power Cable Materials and HVDC Applications at Borealis Innovation Center, in Stenungsund, Sweden.
{"title":"Bulletin Board: In Memoriam Villgot Englund","authors":"","doi":"10.1109/MEI.2025.10924640","DOIUrl":"https://doi.org/10.1109/MEI.2025.10924640","url":null,"abstract":"Villgot Englund, age 47, passed away unexpectedly in his sleep on June 7, 2024. He was an expert in Power Cable Materials and HVDC Applications at Borealis Innovation Center, in Stenungsund, Sweden.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 2","pages":"51-51"},"PeriodicalIF":2.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10924640","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-12DOI: 10.1109/MEI.2025.10924658
Tony Lujia Chen
This issue features three articles, the first of which is “Advancing Space Charge Test Techniques: Pulsed Electro-Acoustic Measurement on a 525-kV HVDC Cable.” The aim of this article is to validate the procedure of assessing the effect of space charge accumulation in extruded HVDC cables. The article presents the results of a pulsed electro-acoustic (PEA) measurement following the protocol recommended by IEEE standard 1732–2017 (IEEE Recommended Practice for Space Charge Measurements on High-Voltage Direct-Current Extruded Cables for Rated Voltages up to 550 kV). A full-size, unaged HVDC cable rated to 525 kV was the chosen sample, with two tests conducted in positive and negative DC polarities. This study demonstrates the reproducibility of the PEA measurement on full-size HVDC cables over 100 meters in length and the applicability of the PEA measurement protocol in the IEEE standard 1732-2017.
{"title":"From the Editor","authors":"Tony Lujia Chen","doi":"10.1109/MEI.2025.10924658","DOIUrl":"https://doi.org/10.1109/MEI.2025.10924658","url":null,"abstract":"This issue features three articles, the first of which is “Advancing Space Charge Test Techniques: Pulsed Electro-Acoustic Measurement on a 525-kV HVDC Cable.” The aim of this article is to validate the procedure of assessing the effect of space charge accumulation in extruded HVDC cables. The article presents the results of a pulsed electro-acoustic (PEA) measurement following the protocol recommended by IEEE standard 1732–2017 (IEEE Recommended Practice for Space Charge Measurements on High-Voltage Direct-Current Extruded Cables for Rated Voltages up to 550 kV). A full-size, unaged HVDC cable rated to 525 kV was the chosen sample, with two tests conducted in positive and negative DC polarities. This study demonstrates the reproducibility of the PEA measurement on full-size HVDC cables over 100 meters in length and the applicability of the PEA measurement protocol in the IEEE standard 1732-2017.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 2","pages":"5-5"},"PeriodicalIF":2.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10924658","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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