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Evaluation of Physical Properties of Coated Paper Blended with Zeolite in Pre-Coating Layer

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry 2023年第1期55卷 70-76页

作者： Kim, Min Je Kim, Sun Goo Yoo, Sung Jong Kim, Yong Sik Lee, Yong Kyu Department of Paper Science & Engineering College of Forest & Environmental Sciences Kangwon National University Korea Republic of Department of R&D Center TAEKYUNG INST. CO. LTD. Korea Republic of

Zeolite is a pigment that can be easily obtained with a large amount of domestic reserves and has excellent hydrophilicity due to its porous structure. In addition, it has the advantage of simple processing without the need for chemical modification and has the great advantage of being inexpensive. In this study, GCC, PCC, and zeolite, which have a large amount of domestic reserves and have a porous structure, were blended and applied as pigments for the pre-coating layer of printing paper. The applicability of zeolites was evaluated by comparative analysis of the surface properties and printability of coated papers. As a result, it was confirmed that when zeolite having a large particle size was blended as a pigment in the pre-coating layer, smoothness and gloss of the coated papers decreased. In addition, it was found that the optical properties were inferior compared to those of other pigments due to the unique color of zeolite. © 2023 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

关键词： Particle size

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Effect of Application of VAE Emulsion and Water-Soluble resin Binder on the Properties of Coated Paper

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Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry 2023年第1期55卷 20-29页

作者： Kim, Sun Goo Yoo, Sung Jong Kim, Yong Sik Lee, Yong Kyu Department of Paper Science & Engineering College of Forest & Environmental Sciences Kangwon National University Korea Republic of Department of R&D Center TAEKYUNG INST. CO. LTD. Korea Republic of

When binders with different physical properties were applied to the pre-coat layer, coating layers having different properties were formed. This was because the characteristics of the top-coating vary depending on the top-coating layer. In particular, the properties of this top-coating layer affected the final printability. Vinyl acetate ethylene (VAE) emulsion binders offer advantages as an alternative resource because natural gas provides the base substance for polymer production. The Tg of VAE emulsion binders can be easily adjusted, so the desired physical properties can be adjusted. Therefore, in this study, SB-latex and VAE emulsion binders with different Tg were applied to the pre-coating layer. In addition, poly vinyl acohol (PVA) was applied as a co-binder, and the printability was evaluated by observing changes in physical properties of the pre-coating layer and the top-coating layer. As a result, as the Tg increased, the surface roughness of the coated paper increased while the paper gloss decreased. In addition, when PVA was blended, a tendency simillar to paper gloss was showed. Therefore, It is considered that this is because the voids formed by the pigment and the binder form different structures. © 2023 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

关键词： Binders

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Stability analysis of the intake diversion tunnel in Jinshuitan pumped storage power station 5

Stability analysis of the intake diversion tunnel in Jinshui...

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5th International Conference on Green Energy, Environment, and Sustainable development, GEESd 2024

作者： Cheng, Yongjin Wang, Can Chu, Weijiang Meng, Guotao Zheng, Shuo Power China Huadong Engineering Co. Ltd Zhejiang Hangzhou311122 China Hydro-China Itasca R&D Center Zhejiang Hangzhou311122 China

ISBN: (纸本)9781510683006

This academic study conducts a comprehensive stability evaluation of the structurally critical intake diversion tunnel system at the Jinshuitan Pumped Storage Power Station facility utilizing advanced three-dimensional numerical modeling techniques. The geometrically intricate tunnel network, consisting of interconnected intake tunnels, diversion branch tunnels, and intersecting geological fault features, necessitates a rigorous stability assessment to ensure the structural integrity of the underground infrastructure is maintained during both the construction stage and long-term operational life cycle. Three-dimensional numerical models were developed employing the FLAC3d software to accurately simulate the complex tunnel geometries, multi-stage excavation sequences, in-situ stress state, and mechanical behavior of the surrounding rock mass. Scenarios evaluated included unsupported excavation conditions, an optimized layered and segmented excavation methodology, as well as the implementation of a systematic regime of ground support measures. The modeling results quantified the efficacy of the proposed layered excavation approach in reducing magnitude of tunnel displacements by 0.1-0.5 mm relative to conventional full-face excavation practices. Furthermore, the anchor support system provided a supplemental displacement control of 0.1-0.8 mm. Comprehensive stress analyses validated the effectiveness of the stabilization strategies, with maximum anchor stresses remaining within allowable limits despite localized stress concentrations at critical junctures such as tunnel intersections and fault zones. This integrated stability analysis approach optimizes the design of complex underground energy infrastructure while ensuring long-term structural integrity and operational reliability. © 2024 SPIE.

关键词： Ground supports

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Axial Assembled Correspondence Network for Few-Shot Semantic Segmentation

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IEEE/CAA Journal of Automatica Sinica 2023年第3期10卷 711-721页

作者： Yu Liu Bin Jiang Jiaming Xu School of Automation Science and Engineering South China University of TechnologyGuangzhou 510640 R&D Center of Precision Electronic Manufacturing Technology Guangzhou Institute of Modern Industrial Technologyand also with the High Performance Motor and Intelligent Control Engineering Technology Research Center of Guangdong ProvinceGuangzhou 511458China School of Automation Science and Engineering South China University of TechnologyGuangzhou 510640China IEEE

Few-shot semantic segmentation aims at training a model that can segment novel classes in a query image with only a few densely annotated support *** remains a challenge because of large intra-class variations between the support and query *** approaches utilize 4d convolutions to mine semantic correspondence between the support and query ***,they still suffer from heavy computation,sparse correspondence,and large *** propose axial assembled correspondence network(AACNet)to alleviate these *** key point of AACNet is the proposed axial assembled 4d kernel,which constructs the basic block for semantic correspondence encoder(SCE).Furthermore,we propose the deblurring equations to provide more robust correspondence for the aforementioned SCE and design a novel fusion module to mix correspondences in a learnable *** on PASCAL-5~i reveal that our AACNet achieves a mean intersection-over-union score of 65.9%for 1-shot segmentation and 70.6%for 5-shot segmentation,surpassing the state-of-the-art method by 5.8%and 5.0%respectively.

关键词： Artificial intelligence computer vision deep convolutional neural network few-shot semantic segmentation

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A Filter Bank Typical Correlation Analysis Method Based on Task-related Components for SSVEP-BCI 6

A Filter Bank Typical Correlation Analysis Method Based on T...

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6th IEEE International Conference on Civil Aviation Safety and Information Technology, ICCASIT 2024

作者： Liu, Qiuzheng Zhang, Yanghao Zhang, Kunchao Guo, Xiaoyang du, Cong Yu, Yewei China Faw Corporation Limited Changchun Global R&d Center Changchun China University of Electronic Science and Technology of China School of Automation Engineering Chengdu China

ISBN: (纸本)9798350389418

Brain computer interface (BCI) systems have received widespread attention in recent years. Among them, the steady-state visual evoked potential (SSVEP)-BCI system has become the most widely studied and applied system due to its lack of user training, high signal-to-noise ratio, and high information transmission rate. The existing SSVEP signal processing methods have achieved certain results, but their lack of robustness to electroencephalogram (EEG) signals containing noise and artifacts, as well as insufficient utilization of harmonic information, make it difficult to improve their motion intention classification performance. This paper proposes a filter bank typical correlation analysis method based on task-related components (TC-FBCA) for designing SSVEP-BCI. The method extracts important EEG components by constructing task-related spatial filters, thereby improving the signal-to-noise ratio of EEG signals. Subsequently, the filtered EEG signal is decomposed into multiple sub bands, and typical correlation analysis is performed in each sub band to obtain the correlation coefficient of each band. Finally, we weighted the correlation coefficients of different frequency bands and selected the response frequency with the highest correlation coefficient as the subject's exercise intention. We design a steady-state visual stimulation EEG signal acquisition experiment to validate the performance of the proposed method. The experimental results show that the average classification accuracy of TC-FBCA on single-subject reaches 86.48 %, achieving the most advanced classification accuracy. In addition, we combine the SSVEP-BCI system with our lower limb exoskeleton robot to build a real-time control platform, and conduct online testing of TC-FBCA. The average accuracy reaches 8 2. 1 0 %, further demonstrating the effectiveness and practicality of our proposed method. © 2024 IEEE.

关键词： Brain computer interface

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Electromagnetic reduced Order Model of a Permanent Magnet Synchronous Motor 27

Electromagnetic Reduced Order Model of a Permanent Magnet Sy...

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27th International Conference on Electrical Machines and Systems, ICEMS 2024

作者： Lukman, Grace Firsta Yun, Gyeonghwan Park, Chansoo Park, dongmin Lee, Cheewoo Pusan National University Dept. of Electrical Engineering Pusan Korea Republic of H&a R&d Center Lg Electronics Gyeongsangnam-do Korea Republic of

ISBN: (纸本)9784886864406

This paper presents a high-accuracy reduced order model (rOM) for a Permanent Magnet Synchronous Motor (PMSM), addressing key performance factors such as temperature effects, core losses, and switching dynamics. Utilizing Finite Element Analysis (FEA), the proposed model integrates a comprehensive set of parameters to ensure accuracy in predicting motor behavior under different operating conditions. The developed rOM is highly adaptable, offering potential applications in various topologies and control systems. The results indicate that the rOM provides enhanced accuracy compared to conventional methods, with error rates under 5%, validating its suitability for model-based product development for industries. © 2024 The Institute of Electrical Engineers of Japan.

关键词： Permanent magnets

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Process Planning Generation for reconfigurable Manufacturing Systems Based on Improved Squirrel Search Algorithm 7

Process Planning Generation for Reconfigurable Manufacturing...

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7th International Conference on Advanced Algorithms and Control engineering, ICAACE 2024

作者： Li, dong Yang, Jiping Gong, Xiaorong Xia, Qing College Of Advanced Manufacturing Engineering Chongqing University Of Posts And Telecommunications Chongqing China Chongqing Institute Of Ceprei Industrial Technology Technology R&d Center Chongqing China

ISBN: (纸本)9798350361445

The concept of reconfigurable manufacturing has emerged in response to the need to adapt to the rapidly evolving market environment and meet the growing demands for personalization and customization in manufacturing. reconfigurable Manufacturing Systems (rMS) are designed to combine the cost-efficiency features of rigid manufacturing systems with the agility to respond swiftly to market changes, similar to flexible manufacturing systems. Within the field of rMS research, process planning has consistently been recognized as a crucial aspect and a key technological focus. This paper addresses the process planning problem in reconfigurable manufacturing systems and proposes a multi-objective integer programming model. An improved squirrel search algorithm is also proposed to solve the problem. Firstly, the squirrel search algorithm is combined with the Pareto dominance theory to generate non-dominant solutions. Secondly, an adaptive predator presence probability strategy is proposed, which changes the predator probability from a fixed value to a decreasing value during the iteration process. This strategy aims to balance the global and local search of the algorithm. Finally, to enhance the algorithm's local search capabilities and prevent it from converging to local optima in the later stages, a random mutation strategy is employed. Additionally, the TOPSIS method is utilized to aid decision-makers in ranking and selecting the most optimal process plans. To validate the feasibility and practicality of the proposed model and new algorithm, numerical experiments were conducted. The results of the experiments demonstrate the superior performance of the algorithm presented in this paper. © 2024 IEEE.

关键词： Multiobjective optimization

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Bipolar dC/dC Converter for HVdC to MVdC Connection with MMC and Zig-Zag Transformer 6

Bipolar DC/DC Converter for HVDC to MVDC Connection with MMC...

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6th International Conference on HVdC, HVdC 2024

作者： Chung, YongHo Lee, JinHee Lee, ChulKyun Kim, HeeJung Kim, dongJoon Cui, ShengHui R&d Center Ls Electric Co. Ltd Anyang Korea Republic of Seoul National University Dept of Electrical and Computer Engineering Seoul Korea Republic of

ISBN: (纸本)9798350387759

This paper proposes a ±20kV/20MW bipolar dC/dC converter for interconnection of HVdC to MVdC in the MTdC pilot project. The proposed converter consists of two three phase monopole modular multi-level converters (MMC), which are connected through three phase zigzag transformer. By using a zigzag transformer in the ac-side of monopole MMC topology, we can easily operate it as like a bipolar MMC topology. In the proposed monopole MMC, the upper three arms can control the positive dC bus, while the lower three arms can control the negative dC bus, respectively. This kind of independent control is possible if we allow the equal dC current injection into the zigzag transformer. Even though the line currents of the zigzag transformer have same dC current level, the zigzag transformer will not be saturated because the total flux generated by two dC components are cancelled in each leg of the transformer. In this paper, the control methods for proposed dC/dC converter are proposed and verified by computer simulation. © 2024 IEEE.

关键词： Bipolar dC/dC Converter MMC MTdC MVdC Zig-Zag Transformer

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Oxide Channel Ferroelectric NANd device with Source-tied Covering Metal Structure: Wide Memory Window (14.3 V), reliable retention (> 10 years) and disturbance Immunity (ΔVth ≤ 0.1 V) for QLC Operation

Oxide Channel Ferroelectric NAND Device with Source-tied Cov...

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2024 IEEE International Electron devices Meeting, IEdM 2024

作者： Joh, Hongrae Kim, Giuk Ock, Jihye Kim, Seungyeob Lee, Sangmok Lee, Sangho Kim, Kwangsoo Lim, Suhwan Woo, Jongho Kim, Wanki Ha, daewon Ahn, Jinho Jeon, Sanghun Korea Republic of Semiconductor R&D Center Samsung Electronics Co. Ltd Korea Republic of Division of Materials Science and Engineering Hanyang University Korea Republic of

ISBN: (纸本)9798350365429

We show an oxide-channel (***.) based gate-injection type ferroelectric NANd (FeNANd) device with source-tied covering metal (SCM) and control dielectric (***). The SCM and *** play crucial roles in the performance enhancement of FeNANd cells. (i) The proposed structure addresses the channel depletion issue of ***. by utilizing accumulated holes in the grounded SCM during ErS. This increases the electric field across the gate interlayer and FE layer, thereby boosting ErS efficiency. (ii) The read operation of erase states distributes a significant portion of the read voltage to ***, intensifying the Vth,ErS. These effects result in a wide memory window (MW~14.3V). Furthermore, the introduction of a Si3N4 deep trap-level layer and careful gate stack design led to superior retention (MW:11.5V after 10 years) and disturbance immunity (ΔVth5 disturb cycles). We also verify the roles of SCM and *** through analytical modeling. Lastly, the proposed structure is compatible with current 3d-NANd fabrication, offering equivalent channel hole pitch and density. © 2024 IEEE.

关键词： NANd circuits

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Multi-objective and Multi-load-Conditions Topology Optimization Model for designing Metamaterial Vibration Isolator with Customized Stiffness 1

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29th International Conference on Computational and Experimental engineering and Sciences, ICCES 2023

作者： Liu, Linhui Huang, Yicang School of Power and Mechanical Engineering Wuhan University Wuhan430072 China R&D Center Wuhan Second Ship Design and Research Institute Wuhan430205 China

ISBN: (数字)9783031449475

ISBN: (纸本)9783031449468

Metamaterial vibration isolation, as a promising technology for reducing and controlling vibration, can achieve mechanical properties that natural materials do not have through the microstructural design of uniformly and periodically distributed unit cells of the metamaterial isolator. However, cell patterns of existing metamaterial isolators are relatively fixed, which leads to the limited design range of three-direction stiffnesses of the isolator. Under some harsh working conditions, the internal strain will be too large for the common unit cell structure. This work develops a topology optimization model based on SIMP (solid isotropic material with penalization) method for designing metamaterial vibration isolator with customized three-direction stiffnesses. It uses the three-direction stiffnesses and strain energies as the optimization objectives. And different direction stiffnesses are calculated under different loading conditions. To simplify the design process, one unit cell with periodic boundaries and equivalent loads is optimized. The overall three-dimensional structure of the vibration isolator is eventually periodically modelled from the optimized cell structure, and its stiffnesses are compared to the customized values to verify the effectiveness of the optimization model. The load–displacement curves of the overall isolator show that the obtained stiffnesses meet well with the target stiffnesses, and the maximum deviation is only 0.12%. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Stiffness

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