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Copyright of Journal of National University of Defense Technology / Guofang Keji Daxue Xuebao is the property of NUDT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Power management chips is damaged to varying degrees when they work at the ambient temperature beyond their acceptable range, and the over-temperature protection circuit plays an important role in improving the reliability and robustness of this kind of chip. This study designs a high-precision over-temperature protection circuit with the dual functions of turning off when the temperature is too high and reminding when the temperature is too low. The positive and negative temperature coefficient voltages are used to detect the chip temperature in real time, and then four logic turnover points are obtained by comparing them with different reference voltages at the output end of the band-gap reference circuit. After processing by the high-precision comparator circuit and hysteresis logic circuit, the hysteresis logic signals are output to control the working state of the chip or to remind the low temperature. The design and relevant simulation have been carried out based on 0.18 μm BCD(Bipolar-Complementary Metal Oxied Semiconductor-Double diffused Metal Oxide Semiconductor) process, and the simulation results show that when the power supply voltage ranges from 3.0~ 5.5 V, the maximum offset of the temperature threshold corresponding to the hysteresis logic turnover signal at the output end of the circuit is within 0.3℃. The circuit has high precision and can be widely integrated in various power management chips requiring over-temperature protection. [ABSTRACT FROM AUTHOR]

Copyright of Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Temporomandibular joint osteoarthritis is a common oral disease with a high incidence. However, temporomandibular joint osteoarthritis is not easy to be detected in the early stage, and it is difficult to obtain clinical pathological specimens, so it is difficult to carry out related research. The application of digital 3D printing technology to animal models of Temporomandibular joint osteoarthritis increases the consistency of the animal models, thus promoting the study of temporomandibular joint osteoarthritis. OBJECTIVE: To establish a standardized animal model of temporomandibular joint osteoarthritis using novel digital technology. METHODS: According to the different modeling methods of unilateral anterior crossbite, 30 female Sprague-Dawley rats were randomly divided into traditional model group, digital model group, and control group (n=10 per group). Cartilage specimens of the condyles were collected at 4 and 8 weeks after modeling. The apparent morphology was observed by stereoscopic microscope. The pathological morphology was observed by hematoxylin-eosin staining and Safranin O/fast green staining. Changes in the expression of interleukin-1β and tumor necrosis factor-α were observed by ELISA, and changes in the expression of aggrecan, type II collagen and matrix metalloproteinase-13 were observed by immunohistochemical staining. RESULTS AND CONCLUSION: Different degrees of degeneration were observed in the digital and traditional model groups. The body mass of rats in both the model groups decreased during the 1st week after intervention and subsequently demonstrated growth trend and were significantly lower than that in the control group. The results of stereoscopic microscope showed that at 4 and 8 weeks after modeling, the deformation and defect degree of the digital model group was significantly higher than that of the traditional model group. At these two time points, the Osteoarthritis Research Society International scores of the digital model group and the traditional model group were higher than those of the control group, and the Osteoarthritis Research Society International score of the digital model group was higher than that of the traditional model group (P < 0.05). Histopathological observation showed that the modified Mankin score and Osteoarthritis Research Society International score of the two model groups were significantly higher than those of the control group of the same age at 4 and 8 weeks after modeling (P < 0.05). Immunohistochemical staining results showed that at two time points, compared with the control group of the same age, the expression of aggrecan and type II collagen decreased in the traditional model group and the digital model group, while the expression of matrix metalloproteinase 13 increased (P < 0.05). ELISA results showed that the expression levels of inflammatory factors interleukin-1β and tumor necrosis factor-α in the traditional and digital model groups were higher than those in the control group at 8 weeks, and the expression levels of interleukin-1β and tumor necrosis factor-α in the digital model group were higher than those in the traditional model group (P < 0.05). To conclude, the personalized metal tube designed and produced by 3D printing technology can quickly guide the osteoarthritis-like lesions of the temporomandibular joint without repeated trial and adjustment, which is reproducible and suitable for promotion and application. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Xi'an Jiaotong University is the property of Editorial Office of Journal of Xi'an Jiaotong University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The laying of gravel bed is a key process in the construction of immersed tube tunnels, and its quality hasasignificant impact on the safety and service life of tunnel operation. The risk of back-silting affects the construction quality and progress. To solve this problem, a gravel bed ridge top dredging system and supporting technology have been proposed for th efirst time in China. The technology can effectively remove more than 20 cm of silt from the gravel ridge top without damaging the foundation bed, and control it within the design allowable range, thus avoiding the delay of construction period and cost risk, which can provide useful reference for subsequent research and development work. [ABSTRACT FROM AUTHOR]

Copyright of Micronanoelectronic Technology is the property of Micronanoelectronic Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Study on Optical Communications / Guangtongxin Yanjiu is the property of Study on Optical Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engineering Science Research & Application is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Redundant power supplies are commonly used in systems that require long-term uninterrupted operation and high reliability. When redundant power supplies are used as N+1 backup power supplies to supply power to devices at the same time, parallel current sharing must be considered.In order to solve the problem of large loss of passive redundant power supply and inability to achieve current equalization, this study adopts the design scheme of active redundancy and designs a 1+1 redundant power supply system with two parallel DC voltage inputs.The system uses GD32E103 as the main control chip. By changing the on-resistance of MOSFET(Metal-Oxide Semiconductor Field Effect Transistor), PI(Proportional Integral) control is adopted to realize the automatic balance of the output current of two redundant power supplies.The simulation and experimental results show that the active redundancy design scheme can achieve the purpose of automatic current equalization.In normal operation, the maximum error of the two current channels is less than 0.1 A, and the accuracy of current sharing meets the design requirements. [ABSTRACT FROM AUTHOR]

Copyright of Micronanoelectronic Technology is the property of Micronanoelectronic Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engineering Management & Technology Discussion is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

ObjectiveThe aim is to remove the SO2 impurities in the alkylated C4 as the raw material of the mixed dehydrogenation device and control the SO2 volume fraction less than 1×10-6. Methods The liquid-phase high-precision adsorption desulfurization process was used to achieve continuous operation by adsorption regeneration. When the raw material was saturated by removing SO2 with adsorption, the adsorption capacity of SO2 adsorbent could be restored by means of nitrogen cycle replacement, heating stripping and air regeneration in the process, and put into production again to ensure the safe, stable and long-term operation of the unit. ResultThe SO2 volume fraction in alkylated C4 could be removed from 30×10-6-400×10-6 to less than 1×10-6 by adopting the liquid-phase high-precision adsorption desulfurization process. ConclusionsThe adsorbent and process flow of the adsorption desulfurization process were optimized and adjusted, which shortened the regeneration time of the adsorbent and ensured the continuous operation of the device industrialization. At the same time, the liquid phase high-precision adsorption desulfurization process is simple to operate, which has low energy consumption and safety risk. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Computational Mechanics / Jisuan Lixue Xuebao is the property of Chinese Journal of Computational Mechanics Editorial Office, Dalian University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the need to improve the detection accuracy, efficiency and traceability of low temperature co-fired ceramics (LTCC), a set of LTCC laser thickness measuring system was designed. For the problem of measuring accuracy was difficult to meet, the existing error was analyzed, the use of adjusting fixture for thickness measurement eliminated coaxial error and linearity error, optimized the design structure to reduce inclination error, eliminated repeatability errors through cyclic sensor calibration, reduced mechanical vibration error through data optimization and filtering processing, improved the system measurement accuracy. Compared with the actual product thickness data, the final accuracy error ≤5 μm, which meets the application requirements of the product and has a broad application market. [ABSTRACT FROM AUTHOR]

Copyright of Imaging Science & Photochemistry is the property of Imaging Science & Photochemistry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The difficulty of solving the shallow water equation lies in the issue of discontinuity problem. It is of great significance to study the solving method with high resolution and strong ability to simulate discontinuity effectively to improve the solving accuracy of the equation. Based on the WENO difference scheme, a new third-order WENO scheme for solving shallow water equations was established by splitting the global smoothness factor and expanding Taylor series, and introducing the parameter p to regulate the dissipation. The numerical simulation shows that the new scheme has the advantages of maintaining the third-order accuracy at the extreme point of the function and strong ability to capture discontinuity. By increasing the weight of discontinuous template allocation, the numerical dissipation can be reduced and the resolution of discontinuous points can be improved. By modifying the momentum term of the shallow-water equation with the source term, the shallow-water equation can satisfy the harmony under still water condition after the source term is built. [ABSTRACT FROM AUTHOR]

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of MW Metal Cutting is the property of Metal Working Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper analyzes the high-precision installation method for the end steel shell in the cast-in-place immersed tube based on the main structure of the north bank buried section and open section of the Dalian Bay Subsea Tunnel Construction project. The construction period of this project is tight, and the southern end of the Z13 section of the north bank buried section and open section structure serves as the docking section between the cast -in -place immersed tube and the prefabricated immersed tube. If conventional techniques are used for construction, the progress is slow and the construction quality is difficult to guarantee. In order to solve this problem, an end steel shell was installed at the docking point. Based on the structural form of the end steel shell, the method of adding a steel support system was adopted, effectively solving the problems of traditional segmented installation that cannot ensure accuracy and a long construction period. A complete set of high-precision installation methods for the end steel shell was developed. By analyzing, inventing, applying, and summarizing the high-precision installation method of cast -in-place immersed tube end steel shells, the construction quality, safety, and duration of the project meet the design requirements, while creating good economic and social benefits. [ABSTRACT FROM AUTHOR]

Copyright of Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Ordnance Equipment Engineering is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

作为一种轻量级网络结构，YOLOX-Nano具有运行速度快的优势。然而，该网络在实际应用中仍然存在特征提取能力较弱、检测精度不足的缺陷。为此，提出了一种综合平衡检测速度和检测精度的高效目标检测网络Rapider-YOLOX。首先，设计高效瓶颈模块，以提升原始 YOLOX-Nano 模型中深度卷积模块的特征提取能力。其次，设计软空间金字塔池化模块，以避免原始SPP模块容易出现丢失部分重要信息的现象，进一步提升多尺度信息融合及通道间信息交流的能力。最后，引入CIoU损失，利用预测框与真实框的中心距离及宽高比提升预测框的位置精度。在PASCAL VOC2007数据集上的实验结果表明，提出的Rapider-YOLOX模型的mAP达到77.92%，比原始YOLOX-Nano高3.79%。此外，在CUDA核心数仅为384的GT1030上，FPS达到45.40，在CPU上FPS也可达到23.94，从而在确保网络轻量级特性的同时，进一步提升了网络的检测精度和泛化性能。

Copyright of Journal of Fuzhou University is the property of Journal of Fuzhou University, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The measurement of dynamic displacement is highly demanded in various engineering fields. However, existing measurement technologies still have limitations such as low efficiency, poor-precision and high cost. A high-precision multi-point dynamic displacement optical measurement technology was developed based on the principle of digital image correlation(DIC). Firstly, a tailormade target with patterns of concentric circles was designed for automatic point recognition and image calibration. The hardware architecture that integrates both wireless and wired industrial cameras was constructed through secondary development of the SDK. Finally, A multi-point displacement measurement technique using DIC was proposed. The accuracy calibration test of this technology was carried out with 3 equal-precision gauge blocks. The results show that the measurement accuracy is 0. 01 mm, the basic error is 0. 05%, and the sensitivity is 0. 2% . Further tests of typical application scenarios were conducted. Results show that the system has a comparable accuracy to high-precision laser displacement sensors under low-frequency vibration test, while real-time high-frequency displacement measurement with high-precision can also be achieved by the proposed technology using high-frequency camera. The proposed technology has significant advantages compared to conventional techniques(e. g., laser displacement sensor, LVDT), and can be extensively applied in laboratory and field test. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Laser Technology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Guangdong Architecture Civil Engineering is the property of Guangdong Architecture Civil Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aiming at the shortcomings of a single UAV image in the modeling accuracy and integrity of complex arch bridges, a refined modeling method for arch bridges is proposed, which combines 3D laser scanning data with UAV aerial images. Firstly, the high-quality texture data of the main body and details of the arch bridge are obtained by aerial photography and close-up photography in the low-altitude area of the UAV; then, the main body and detailed image data of the UAV are fused by adding connected images to generate high-precision point cloud data on the upper part of the main body of the arch bridge; finally The multi-site cloud data of the lower part of the arch bridge body collected by the 3D laser scanner is fused with the high-precision point cloud of the upper part of the arch bridge through coordinate transformation and registration to generate a complete and refined real 3D model of the arch bridge. The effectiveness of the proposed modeling method is verified by comparing the accuracy analysis and texture integrity evaluation with a single UAV image model-ing result, the conclusion shows that the method can reconstruct the real 3D model of the arch bridge with high geometric accuracy, good integrity and real texture, and can also be used for similar bottom-empty buildings. The data acquisition method can provide reference and has good engineering application value. [ABSTRACT FROM AUTHOR]

In order to effectively control the transversal error in tunnel through survey, a method for observing the long-side traverse in the tunnel is studied and designed so as to increase the observing side length of the traverse in the tunnel, reduce the number of traverse stations, and control the transversal through error of the tunnel. The designed long-side traverse observation method was simulated on land with satisfactory results and proved that the designed long-side traverse observation method was scientific and reliable for tunnel through survey. The result of engineering practice shows that the long-side traverse is suitable for tunnel through survey and meets the need of precise through of a tunnel. [ABSTRACT FROM AUTHOR]

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A RC charging time zero crossing invariant oscillator is designed to provide high precision and high stability clock signals insensitive to voltage and temperature. This paper analyzes and deduces the characteristics that the time of zero crossing voltage does not vary with the power supply voltage in the process of RC charging, and adopts the temperature compensation technology to ensure that the time of zero crossing voltage does not vary with the temperature to the maximum extent. The simulation results show that the oscillator can output 2 MHz stably, the frequency fluctuation from 2.5 V to 5.5 V is less than 1%, the temperature fluctuation from -40 ℃ to 125 ℃ is less than 1%, and the maximum current under PVT condition is less than 150 μA. [ABSTRACT FROM AUTHOR]

The collocated grid finite volume CLEAR (coupled and linked equations algorithm revised) method was applied to solve the governing equations for viscous and XPP (eXtended Pom-Pom) viscoelastic fluids. The high accuracy AVLsmart schemes for the convection terms of momentum and constitutive equations were constructed based on the deferred correction method. Firstly, the incompressible viscous fluids past a cylinder at different Reynolds numbers were simulated to verify the validity of the developed numerical method. Then, the isothermal and non-isothermal XPP viscoelastic fluids past a cylinder were studied numerically, with the distribution patterns of velocity vectors, stress components, stretches and temperatures obtained. Especially, the effects of We on horizontal velocities, normal stresses and stretches were analyzed. The results provide a theoretical foundation for accurate prediction of fiber reinforced viscoelastic polymer dynamic filling process in complex cavities. [ABSTRACT FROM AUTHOR]

Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: High-definition transcranial direct current stimulation has great potential in promoting the improvement of cognition and motor behavior, which can improve the body’s static balance ability. OBJECTIVE: To investigate the effect of high-definition transcranial direct current stimulation on the body’s dynamic balance. METHODS: A total of 36 healthy students from Shenyang Sport University were recruited as test subjects, including 24 males and 12 females. They were divided into three groups by a random number table method, followed by anodic high-definition transcranial direct current stimulation with different current intensities of 0 (sham stimulation), 1, and 2 mA for 20 minutes. The dynamic balance ability was tested before stimulation and immediately and 30 minutes after stimulation. The study protocol was approved by the Institutional Review Board of Shenyang Sport University (approval No. [2020]12). RESULTS AND CONCLUSION: The subject’s bipedal dynamic stability index and right-foot dynamic stability index were significantly reduced immediately and 30 minutes after 1 mA stimulation (P < 0.05). The offset distance was significantly shortened at 30 minutes after 1 mA stimulation (P < 0.05). The subject’s bipedal dynamic stability index and right-foot dynamic stability index were significantly reduced 30 minutes after 2 mA stimulation (P < 0.05). The offset distance was significantly shortened immediately and 30 minutes after 2 mA stimulation (P < 0.05). Anodic high-definition transcranial direct current stimulation with different current intensities showed no different effects in improving the dynamic balance of the human body (P > 0.05). To conclude, high-definition transcranial direct current stimulation can temporarily improve the dynamic balance ability. It cannot only increase the dynamic stability when standing on single and both feet, but also promote gait stability during active exercises. [ABSTRACT FROM AUTHOR]

There are loose boulders in the riverbed of Liujiang River. They usually are filled with pebbles or gravel, a typical highly permeable stratum. For this stratum, the scheme of steel boxed cofferdam or steel sheet pile (steel pipe pile) cofferdam commonly used in pier construction is not applicable. Combined with Peisen Liujiang Bridge across Liujiang River,a new weir formwork integrated structure and corresponding construction method are put forward, which can quickly construct the pier embedded bearing platform or expanded foundation under the condition of strong water permeability and loose stratum in dry season. This structure and method improve the construction quality, safety at low cost and provide favorable reference for similar projects. [ABSTRACT FROM AUTHOR]

Copyright of MW Metal Cutting is the property of Metal Working Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

As one of the most popular fields in deep learning, target recognition has been widely applied for civil use, such as face recognition, pedestrian recognition, license plate recognition, vehicle recognition and so on. In the field of military application, it is in its development stage given that there are few military target data sets, but the recognition requires high precision and strong real-time performance. Firstly, the development status of military target recognition was expounded based on deep learning. Then, six mainstream military target recognition algorithms were introduced on the basis of deep learning（including Mask R-CNN, GAN and Deep Forest, DRFCN, E-MobileNet, SSD300 and YOLO） and their related network structures, improvement methods and practical applications. Finally, the mainstream methods are summarized, and the future development trend was discussed. [ABSTRACT FROM AUTHOR]

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)