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International Workshop on Advanced Computational Intelligence (IWACI)

作者： Yang Yisheng Yang Zeyuan Yan Xiqiang Yan Sijie Liu Bowen Ding Han State Key Lab of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan China China Aerodynamics Research and Development Center Facility Design and Instrument Institute Mianyang China

ISBN: (数字)9798350308501

ISBN: (纸本)9798350308518

Wind tunnels are large-scale ground test facilities to conduct aerodynamic characteristic tests on various types of aerospace vehicles, advanced rail transport, and large buildings, are of great significance for the development of aeronautic and astronautic. To address the issues of complex design and analysis processes, as well as the over-design in traditional wind tunnel structure design, an optimized wind tunnel structure design method is developed that embeds the multi-fidelity finite element analysis model into the surrogate model. A primary Kriging model is trained with low-precision finite element samples. Next, a hierarchical Kriging model is constructed based on bridge function and high-precision finite element analysis samples supplemented. Then, the surrogate model could be updated automatically using expected improvement (EI) method. Experiments demonstrates that the new optimized structure for the acceleration section of wind tunnel achieving a 40% exceeded structural mass reduction with the constraints structural stress criterion, first-order natural frequency and deformation limitation.

关键词： Analytical models Deformation Wind tunnels Simulation Flanges Finite element analysis Ribs

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Late Paleozoic–Early Mesozoic tectonic evolution of the Zongwulong Shan-Qinghai Nanshan tectonic belt in the northern Qaidam continent， northern Tibet

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Journal of Earth Science 2025年

作者： Yonghui Zhao Chen Wu Jie Li Peter J.Haproff Lin Ding State Key Laboratory of Tibetan Plateau Earth System and Resources Environment (TPESRE)， Institute of Tibetan Plateau Research， Chinese Academy of Sciences University of Chinese Academy of Sciences Chongqing Key Laboratory of Complex Oil and Gas Field Exploration and Development， Chongqing University of Science and Technology Department of Earth and Ocean Sciences， University of North Carolina Wilmington

The Zongwulong Shan-Qinghai Nanshan tectonic belt of the northern Tibet Plateau experienced a protracted tectonic history， including the openings and closures of the Proto- and Paleo-Tethyan Oceans. Although the tectonic belt has been extensively studied， details regarding the tectonic processes involved in its development remain controversial. To better constrain the tectonic processes of this tectonic belt， we conducted detailed field geological mapping， zircon U-Pb geochronology， and whole-rock geochemical and Sr-Nd isotopic analyses. Our results show that intrusive rocks in the tectonic belt crystallized in ca. 292–233 Ma， perhaps in an arc/subduction setting. Geochemical and Sr-Nd isotopic data suggest that early Permian–late Triassic ultramafic-intermediate intrusions were sourced from the enriched mantle， whereas intermediate-acidic rocks were sourced from mixed crust-mantle. We present the tectonic model that involves: (1) Early Devonian–early Permian intracontinental extension occurred in the northern margin of the Qaidam continent (ca. 416 Ma–292 Ma); (2) Early Permian–late Triassic northward subduction of the Paleo-Tethyan Ocean resulted in arc magmatism (ca. 292 Ma–233 Ma); and (3) subsequent late Triassic intracontinental extension (ca. 233 Ma–215 Ma). Our results suggest that the late Paleozoic–early Mesozoic development of the Zongwulong Shan-Qinghai Nanshan was related to the opening， subduction， and slab retreat of the Paleo-Tethyan Ocean， which has key implications for the tectonic evolution of the northern Tibetan Plateau.

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5G mmWave Patch Antenna Array on Extremely Low Loss Alumina Ribbon Ceramic Substrates for Antenna-in-Packaging (AiP)

5G mmWave Patch Antenna Array on Extremely Low Loss Alumina ...

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Electronic Components and technology Conference (ECTC)

作者： Cheolbok Kim Hoon Kim Eun Ju Moon David R Peters Heather Vanselous-Barrett Seong-ho Seok Corning Research and Development Corporation Corning NY USA Corning Technology Center Korea Asan Gyeonggi-do South Korea

The multi-layer capability of Corning's alumina ribbon ceramic (ARC) substrates for 5G mmWave Antenna-in-Packaging (AiP) is demonstrated on the $1\times 4$ array antenna using three $120\ \mu\mathrm{m}$ ARC substrates that have an extremely low dielectric loss, low profile, compactness, and good heat dissipation. The $1\times 4\ \text{mm}$ Wave array antenna is designed and fabricated by the laser ablation process, standard semi-additive metallization process, and Cu-Cu bonding with the Cu nitride passivation layer. The Cu nitride passivation layer allows lower process temperature and lower pressure than the conditions of direct Cu-Cu bonding. The fabricated $1\times 4$ array antenna is characterized including a beam steering. It has a simulated and measured peak gain of 11.2 dBi and 10.8 dBi, respectively, with a simulated 3-dB beamwidth of 26.3° in the H-plane and 82.1° in the E-plane. The beam can be steered up to 50° with 150° input phase difference between antenna elements.

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Numerical Simulation Study on the Effect of Horizontal Well Reservoir Stimulation for Gas Hydrate Production

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Acta Geologica Sinica(English Edition) 2022年第2期96卷 701-712页

作者： LI Xiaoyang TIAN Yingying ZHANG Xin SONG Gang ZHAO Ming LIANG Jinqiang HUANG Wei MENG Fanle Institute of Exploration Techniques China Geological SurveyLangfangHebei 065000China Directional Drilling Technology Innovation Center China Geological SurveyLangfangHebei 065000China Guangzhou Marine Geological Survey China Geological SurveyGuangzhou 511466China Research Institute of Petroleum Exploration and Development Beijing 100083China

A new gas hydrate reservoir stimulation method of in-situ fracturing with transient heating is proposed, in line with analysis of the technological bottlenecks faced by marine gas hydrate production. This method injects the developed chemical reagents into a hydrate reservoir through hydraulic fracturing, releasing heat during the chemical reaction to increase the hydrate decomposition rate. The chemical reaction product furthermore has a honeycomb structure to support fractures and increase reservoir permeability. Based on the geological model of natural gas hydrate in the South China Sea, three development methods are simulated to evaluate hydrate production capacity, consisting of horizontal well, fractured horizontal well and in-situ fracturing with transient heating well. Compared with the horizontal well, the simulation results show that the cumulative gas production of the fractured horizontal well in one year is 7 times that of the horizontal well, while the cumulative gas production of in-situ fracturing with transient heating well is 12 times that of the horizontal well, which significantly improves daily efficiency and cumulative gas production. In addition, the variation patterns of hydrate saturation and temperature-pressure fields with production time for the three exploitation plans are presented, it being found that three sensitive parameters of fracture conductivity, fracture half-length and fracture number are positively correlated with hydrate production enhancement. Through the simulations, basic data and theoretical support for the optimization of gas hydrate reservoir stimulation scheme has been provided.

关键词： natural gas hydrate horizontal well reservoir stimulation transient heating seepage channel hydraulic fracturing production enhancement technology

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Effect of Paclobutrazol Application on Plant Growth and Flower Quality in Herbaceous Peony

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Phyton-International Journal of Experimental Botany 2022年第9期91卷 2017-2032页

作者： Yanqing Wu Jiao Liu Daqiu Zhao Jun Tao Joint International Research Laboratory of Agriculture and Agri-Product Safety The Ministry of Education of ChinaInstitutes of Agricultural Science and Technology DevelopmentYangzhou UniversityYangzhou225009China Jiangsu Key Laboratory of Crop Genetics and Physiology College of Horticulture and Plant ProtectionYangzhou UniversityYangzhou225009China

Herbaceous peony(Paeonia lactiflora Pall.)is an important ornamental plant *** its natural state,*** often manifests traits like rapidly elongating internodal growth,loose plant types,and soft inflorescence ***,very little has been known about the measures for controlling these *** study investigated the effect of applying paclobutrazol(PBZ)on the plant growth and flower quality in *** results indicated that PBZ application reduced the plant height(8.05%),plant crown width(14.72%),and leaf area(10.90%),but increased the leaf thickness(18.18%)and stem diameter(over 11%)in ***,PBZ application was also found to increase the chlorophyll(Chl)a(29.63%),Chl b(33.33%),Chl a+b(30.56%),SPAD(27.32%),relative water content(0.47%),soluble sugar(5.09%)and activities of three antioxidant enzymes(superoxide dismutase 169.66%,peroxidase 3.59%,catalase 319.30%),but decreased the relative electrical conductivity(18.52%).Additionally,the application of PBZ was found to affect the flowering quality of ***,increasing the flower diameter and fresh weight only in the flower-bud *** initiates the bloom stage,where there was a decrease in the total content of the aromatic compounds except for the flower-bud stage,and faded the flower color by reducing the content of *** results demonstrated that the application of PBZ can regulate the *** plant types with no significant decrease in its ornamental *** might provide a theoretical basis for further applying PBZ in *** for use in urban landscape spaces.

关键词： Paeonia lactiflora growth bioregulator flower color aromatic compound

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Brightness temperature simulation of subarctic lake-ice evolution by HIGHTSI and SMRT model

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Advances in Polar Science 2024年第3期35卷 303-323页

作者： ZHANG Yixiao QIU Yubao PENG Chongtai Bin CHENG SHI Lijuan Matti LEPPARANTA Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China University of Chinese Academy of Sciences Bejing 100049China School of Information and Communication Guilin University ofElectronic TechnologyGuilin 541004China Finnish Meteorological Institute Helsinki 00101Finland National Key Laboratory of Microwave Imaging Technology Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China Department of Space Microwave Remote Sensing System Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China University of Helsinki Helsinki 00014Finland

Microwave brightness temperature(TB)can be used to retrieve lake ice thickness in the Arctic and subarctic ***,the accuracy of the retrieval is affected by the physical properties of lake *** improve the understanding of how lake ice affects TB,numerical modeling was *** study combined a physical thermodynamic ice model HIGHTSI with a microwave radiation transfer model SMRT to simulate the TB and lake ice evolution in 2002-2011 in Hulun Lake,*** reanalyzed meteorological data were used as atmospheric *** ice season was divided into the growth period,the slow growth period,and the ablation *** simulations revealed that TB was highly sensitive to ice thickness during the ice season,especially vertical polarization measurement at 18.7 *** quadratic polynomial fit for ice thickness to TB outperformed the linear fit,regardless of whether lake ice contained bubbles or not.A comparison of the simulated TB with space-borne TB showed that the simulated TB had the best accuracy during the slow growth period,with a minimum RMSE of 4.6 *** results were influenced by the bubble radius and *** findings enhance comprehension of the interaction between lake ice properties(including ice thickness,bubbles,and salinity)and TB during ice seasons,offering insights to sea ice in the Arctic and subarctic freshwater observations.

关键词： lake ice evolution HIGHTSI SMRT ice thickness passive microwave brightness temperature

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Management of Human Bite Wounds in Children: A 9-year Retrospective Study

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Journal of Surgical research 2025年 312卷 25-30页

作者： Ao, Wei Ma, Wei Zhang, Run Xiang, Li Zhang, Xue-Bing Liu, Jun-Hong Department of Day Surgery Ward Children's Hospital of Chongqing Medical University National Clinical Research Center for Child Health and Disorders Ministry of Education Key Laboratory of Child Development and Disorders Chongqing China China International Science and Technology Cooperation Base of Child Development and Critical Disorders Chongqing China Chongqing Key Laboratory of Structural Birth Defect and Reconstruction Chongqing China

Introduction: Human bites are one of the common traumas among children;however, their treatment remains controversial. This study aimed to explore the treatment of human bite wounds in children. Materials and methods: The clinical data of 792 children with human bites were collected between 2014 and 2022. Based on their treatment methods, the patients were divided into the debridement group, primary closure group, and delayed closure group, and the therapeutic effects were analyzed. Pearson χ 2 test was employed to compare classified variables. We used binary logistic regression to identify the risk factors of wound infection. Results: In total, 660 children with human bites meeting the inclusion and exclusion criteria were enrolled in this study, with an average age of 8.38 y (2 mo to 17 y). The participants were mainly male (85.2%), and the most common site of injury was the head or neck (81.4%). In total, 111 children (16.8%) developed wound infection, and the infection rate was significantly lower in the delayed closure group than in the primary closure group (12.6% versus 29.0%, P < 0.001), but there was no significant difference between the delayed closure group and the debridement group (12.6% versus 7.6%, P = 0.139). There were 395 children with optimal wound healing. The optimal wound healing rate in the delayed closure group was significantly higher than that in the debridement group (76.4% versus 33.1%, P = 0.733), with no significant difference between the delayed closure group and the primary closure group (76.4% vs 80.8%, P < 0.001). In multivariate logistic regression analysis, advanced age (risk ratio (RR) 1.195 per increasing 1-y interval, 95% confidence interval [CI] 1.090-1.310), suture method (RR 4.375 for primary closure compared to delayed closure, 95% CI 2.173-8.808), and onset-to-treatment time (RR 1.029 for each additional hour, 95% CI 1.010-1.049) were independent predictors of wound infection. Conclusions: For human bites of children, we r

关键词： Antibiotics Human bites Infection Management Pediatric Prognosis Trauma

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research on Tea Leaf Disease Image Classification Under Complex Conditions Combing the Improved MobileViT with Deblurring Module

SSRN

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SSRN 2023年

作者： Tao, Dan Zhang, Sheng Yu, Mingjun Qi, Qihua Qiu, Guangying College of Electrical and Automation Engineering East China Jiaotong University Nanchang330013 China Research and Development Department Hubei Huazhong Electric Power Technology Development Co. Ltd. Hubei430000 China

Leaf disease diagnosis is very critical for tea due to its importance for increasing crop production. Tea leaf disease images pose unique challenges compared to other types of images due to their characteristics, including randomly distributed lesions, diverse symptoms, and complex backgrounds. As a result, capturing discriminative information from these images becomes difficult. In this article, we propose a effective model for the tea leaf disease diagnosis by combing the MobileViT and deblurring preprocessing module. The MobileViT is composed with regular convolutions, MV2 (Inverted Residual block from MobileNetV2), MobileViT block, global pooling, and fully connected layers. The pretreating module consist a generator and a discriminator. The generator employs a U-Net architecture to convert blurry images into sharp ones, while the discriminator evaluates the realism of the generated images through the PatchGAN structure. To enhance the training process and produce superior deblurred outputs, auxiliary modules like pixel consistency loss and perceptual loss are utilized. The effectiveness of our proposed method are demonstrated by five experiments, which are respectively conducted with (1) normal condition;(2) different levels of motion blur;(3) gaussian noise;(4) low illumination, (5) public dataset. The results show the proposed method outperform the state-of-art methods. Furthermore, we discusse the impact of different data ratios in the training set and test set on the results with a test set accuracy of 92% when the ratio is 5:5. © 2023, The Authors. All rights reserved.

关键词： Image classification

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Solution of using battery energy storage systems for power transmission congestion of Ninh Thuan - Binh Thuan power grid

Solution of using battery energy storage systems for power t...

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International Symposium on Applied Science 2024, ISAS 2024

作者： Nguyen, Nhat Nam Hoang, Hai Vu, Duc Quang Truong, Canh Toan Thai, Xuan Tra Vu, Phan Tu Power Systems Department Faculty of Electrical & Electronics Engineering Ho Chi Minh City University of Technology Vietnam National University Ho Chi Minh City Ho Chi Minh City Viet Nam Training Research and Development Centre Power Engineering Consulting Joint Stock Company 2 Ho Chi Minh City Viet Nam

Currently, in order to reduce CO2 emissions to combat climate change as committed at the COP 26-27-28 conferences, many countries around the world, including Vietnam, are strongly transitioning from traditional energies to renewable ones. The development of renewable energy (RE) sources such as wind and solar power contributes not only to supplement and diversify the electricity sources but also to enhance the national energy supply security. However, the rapid and concentrated development of RE sources in some areas causes many disadvantages in the operation of Vietnam power system. Especially, this overdevelopment puts more pressures on the weak interconnected transmission infrastructure of the system. As a result, many RE power plants are forced to reduce their outputs, and hence they cannot feed the full capacity into the power grid. Ninh Thuan - Binh Thuan is a particularly notable area where the local electricity demand is very low while many RE sources have been putting into operation in recent years. As the power system in this region is expected to develop with a high proportion of RE in the future, the negative impact of RE on the transmission is inevitable. To handle this unexpected situation, this paper focuses on studying the impact of RE on the power system in Ninh Thuan - Binh Thuan region by 2025. In this research, the power flow analysis over the time is carried on to identify the overloading locations on the power grid. The solution of using battery energy storage systems (BESS) for Ninh Thuan - Binh Thuan power system is then validated on the analysis platform of ETAP 22.5. The obtained results show that the use of BESSs with reasonable powers, capacities and locations can ensure the stable, safe and reliable operation of the power grid. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Battery storage

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A brief technical note on the onset of convection in a horizontal nanofluid layer of finite depth via wakif-galerkin weighted residuals technique (Wgwrt)

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Defect and Diffusion Forum 2021年第1期409卷 90-94页

作者： Wakif, Abderrahim Animasaun, I.L. Sehaqui, Rachid Laboratory of Mechanics Faculty of Sciences Aïn Chock University Hassan II of Casablanca Casablanca20000 Morocco Fluid Dynamics and Survey Research Group Center for Research and Development Federal University of Technology Akure Nigeria

The onset of convection in a horizontal nanofluid layer of finite depth is a subject that can never be over-emphasized as it plays a significant role in controlling the transport phenomenon within a nanofluidic medium. This body of knowledge led to a doubtful report in 2014 by Nield and Kuznetsov concerning some obtained equations and established results. However, the accuracy of the thermal stability characteristics is strongly dependent on the used model as well as the employed methodological procedure. In this report, countable models are suggested as a better improvement of the aforementioned analysis. Either mathematical or technical point of view, it is worth concluding that the approximate analytical results elaborated by Nield and Kuznetsov can be improved properly by using the models presented herein. © 2021 Trans Tech Publications Ltd, Switzerland

关键词： Nanofluidics

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