Static and Dynamic Characteristics Analysis on Frame Beam Reinforced with Carbon Fiber Reinforced Plastic Based on ANSYS by YU Wenhuan, MI Kaihua, ZHAO Ping

“…To study the static and dynamic characteristics on frame beam reinforced with carbon fiber reinforced plastic,a frame beam for example,the three-dimensional finite element model was established by the FEM soft-ware ANSYS,when the frame beam in unreinforced,ordinary carbon fiber reinforced and prestressed carbon fiber reinforced has respectively carried on the static analysis,modal analysis and time history analysis.Research showed that carbon fiber reinforced plastics could significantly improve the ultimate bearing capacity of the frame beam,but could be reduced to a corresponding the ductility of the frame beam;prestressed carbon fiber reinforced had great effects on the natural frequency of vibration of frame beam and greatly improved the rigidity of frame beam;ordinary carbon fiber reinforcement could hardly improve the seismic performance of frame beam,whereas the prestressed carbon fiber reinforced plastics could significantly improve the level of frame beam of horizontal seismic performance,the seismic design criterion of “strong column and weak beam” should be followed in design.…”
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Transforming The Institutional and Governance Frameworks of Indonesia’s Downstreaming Policy by Bahlil Lahadalia, Chandra Wijaya, Athor Subroto

“…Conclusion: This research offers novel insights into the discourse on downstreaming policy by examining its institutional design and governance frameworks. Originality: The paper provides practical recommendations aimed at enhancing the institutional design and governance of downstreaming, thereby aligning the policy more closely with its stated objectives. …”
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Experimental Investigation on Effect of Ingot Processing on Gear Bending Fatigue Performance by Wu Zhongrui, Wei Peitang, Chen Difa, Mao Tianyu, Liu Huaiju

“…It provides some references for fundamental data construction of gear fatigue and anti-fatigue design in China.…”
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Dynamic Surface Control with High-Order LESO Compensation for Near-Space Vehicle by Ouxun Li, Li Deng, Shutong Huang, Jianqi Wang, Ju Jiang

“…In the proposed method, a tracking differentiator (TD) based on an inverse hyperbolic sine function is firstly designed, and the convergence of TD is also analysed with the Lyapunov stability theory. …”
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A Compact Size 4–19.1 GHz Heart Shape UWB Antenna with Triangular Patches by Gokmen Isik, Serkan Topaloglu

“…An ultrawideband antenna is designed, simulated, and realized. To overcome the narrow bandwidth characteristics of basic patch antennas, the structure of the radiation pattern is optimized by the aid of elliptical and rectangular patches. …”
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Development of an Autonomous Endoscopically Implantable Submucosal Microdevice Capable of Neurostimulation in the Gastrointestinal Tract by J. Hajer, M. Novák

“…The implantable device is a fully customized electronics package which was specifically designed for the purpose of experiments in the submucosa. …”
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Rationale for the Use of CAD/CAM Technology in Implant Prosthodontics by Jaafar Abduo, Karl Lyons

“…One of the developments is the application of computer-aided design and computer-aided manufacturing (CAD/CAM) to produce implant abutments and frameworks from metal or ceramic materials. …”
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Security analysis of public-key cryptosystems based on matrix action problem against quantum attack by Huawei HUANG

“…As a generalization of the discrete logarithm problem, semigroup action problem has important applications in the design of public-key cryptography.Public-key cryptosystems based on action problem of integer matrix semigroups on the direct product of commutative groups were analyzed.The matrix was regarded as the exponent of direct product elements, and this class of matrix action had the exponential rules similar to group.It was proved that if the matrix action was injective or the number of generators of the hidden subgroup was less than or equal to the square of the order of the matrix, the matrix action problem could be reduced in polynomial time to the hidden subgroup problem of the direct sum of the additive group of the matrices.And it was proved that commutative matrix action problem could also be reduced to hidden subgroup problem of the direct sum of the additive group of the matrices in polynomial time.The cryptosystems based on this class of matrix action problem cannot against quantum attacks.This conclusion has theoretical significance in the design of public-key cryptography against quantum attacks.…”
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Research Progress of Treatment of Black and Odorous Water Bodies with Aeration Technology by WU Zuojingtong, DAI Xianpu, WU Hui, PAN Hongzhong

“…When treating black and odorous water bodies,the current aeration technology is faced with problems such as unscientific aeration design,unreasonable design of parameters such as aeration volume,aeration time,and influence radius,and unclear mechanism of coupling with other technologies.To solve these problems,this paper conducts a literature study of the effect of aeration in reducing common pollutants in water bodies and clarifies the effectiveness of aeration in the treatment of black and odorous water bodies.Then,factors affecting the aeration effect are comprehensively analyzed,and the following conclusions are drawn from the results.Bottom microbubble aeration has significant advantages in effect and energy consumption;clear correlations among aeration intensity,aeration time,and pollutant removal rate are observed;when energy consumption and effect are comprehensively considered,the room for optimization of aeration/non-aeration ratio remains large.Finally,an overview and prospects of the coupling study of aeration and other technologies are presented.This research is expected to provide a theoretical reference for the treatment of black and odorous water bodies with aeration technology.…”
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The Air Lubrication Behavior of a Kingsbury Thrust Bearing Demonstration by Wanjun Xu, Jiangang Yang

“…However, the requirements of surface quality and misalignment were appropriately relaxed through the design of the centrally pivoted tilting pads. This design is conducive to thin-film lubrication and is a potential application for microturbines.…”
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Simulation Study on Image Characteristics of Typical GPR Targets in Water Conservancy Projects by Jie Cao, Baoyuan Yuan, Yun Bai

“…The successful application at the Nanmenxia Reservoir shows that this method can effectively detect the location and path of reservoir leakage and provide technical support for the design and construction of a reservoir reinforcement project.…”
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Error Modeling based on Screw Theory and Sensibility Analysis of Reconfigurable Robot by Ge Weimin, Zhao Wen, Wang Xiaofeng, Liu Jun, Liu Zengchang

“…For the static error about dimensions error and geometric parameters error of reconfigurable robot caused by the design and manufacture of modules and its configuration change,the static geometric parameters error of reconfigurable robot is treated as the structural error and transmission error of the joint,and is assumed to be the result of tiny screw motion,then an kinematic error model of robotic is built by using the products of exponentials formula. …”
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Parallel orchestration and deployment system for scalable heterogeneous service function chain supporting polymorphic network by Hao CHEN, Yuan YANG, Mingwei XU, Dan PEI, Yilin YOU

“…Aiming at the problem of second-level service function chain orchestration and deployment in the polymorphic data center with the scale of 10 000 servers, a scalable heterogeneous SFC parallel orchestration and deployment (SHOD) system was proposed.The scale-out orchestration time of service chain was reduced to seconds by partitioning the data center and adopting a parallel orchestrator design that minimizes resource usage.Using a mediator design model that satisfies the single-responsibility principle, the heterogeneous equipment scalable orchestration and deployment were realized as well as service function chain building chain.Experimental results show that in a data center with 10 000 servers, the scale-out orchestration time of SHOD system is reduced to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML"> <mfrac> <mn>1</mn> <mrow> <mn>12</mn></mrow> </mfrac> </math></inline-formula> of the existing system-Daisy, while only 1.5 times CPU utilization overhead is introduced.…”
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Research of Simulation Model and Prediction of Fatigue Life of Planetary Carrier of Tracked Vehicle by Liu Zhe, Tao Fenghe, Jia Changzhi

“…The planetary carrier is an important transmission mechanism in tracked vehicles side gear reducer,and it is designed with the static strength theory within the limitation of test and experimental method.Thus the actual dynamic characteristics of planetary carrier cannot be embodied,and it brings difficulty to predict life with given dynamic loads and results in wide gap between actual life and designed. …”
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柴油机卷簧扭振减振器力学模型和性质研究 by 田中旭, 陈俊豪, 蔡正祥, 汪俊, 李嘉鹏

“…Owning high reliability and excellent performance,sleeve spring-type torsional vibration dampers is often used in high-power marine diesel engine to reduce torsional vibration.However,since sleeve spring pack belongs to the large deformation and nonlinear problem of the superposed curved beam,the description of the deformation state,the change of the contact area and the limitation of the surrounding space on the deformation make the study of mechanical model very complicated.So far,there still isn’t an efficient and accurate computational method for the stiffness parameters.Therefore,the computational model of the stiffness for the dampers was studied.Based on the superposed curved beam bending models,these complex factors such as the contact between the springs,support and limit of stroke limiter were fully considered.A complete damper stiffness mechanics model and related algorithms were presented and program was made as well.Correctness of the model was verified by the method of finite element analysis.Based on this,the influence of the main design parameters of the damper on the mechanical properties was studied,which provided a basis for design of the damper.…”
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ORIENTATION SYSTEM OF PV PANELS AFTER SUN by GEORGE EDUARD HOLMAN, CIPRIAN AFANASOV

“…The wiring diagram has been designed so that the guidance system works in both manual and automatic modes. …”
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Trajectory Tracking of a Flexible Robot Manipulator by a New Optimized Fuzzy Adaptive Sliding Mode-Based Feedback Linearization Controller by M. J. Mahmoodabadi, N. Nejadkourki

“…Then, the sliding mode control strategy is implemented to design a stabilizer for trajectory tracking of the flexible robot. …”
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A Real-Time Measurement Model of Attention-Allocation Level and Its Application in Simulated SPO Task by Lei Wang, Zhiyang Zhang, Wei Tan, Zhongchang Yang

“…It concluded that Human-centered flight deck design can enhance a pilot’s attention allocation level. …”
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Seismic Performance Analysis of Steel Truss Coal Conveying Trestle Based on Multisensor Data Fusion by Bo-yu Yao

“…The results show that the model can accurately characterize the seismic performance of long-span coal handling trestle, which provides an effective numerical simulation method for the engineering design of coal handling trestle.…”
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Survey on the causal consistency of data by Junfeng TIAN, Yanbiao WANG, Xinfeng HE, Juntao ZHANG, Wanhe YANG, Ya’nan PANG

“…Causal consistency is one of the important projects to ensure data consistency in distributed storage.The current research focuses on causal consistency including optimization of clock method,design of the protocol and the optimization of operation transaction sequence.In the actual cloud environment,in addition to clock skew and query amplification,there are also insecure factors such as Trojans and untrusted third parties,which will destroy the causal consistency metadata stored by users,and the consistency of user’s operating results,even affect the availability of the storage environment.From the perspective of performance improvement and security in distributed storage,the clock synchronization,data replications,analysis and design of server protocol,related research progress of the serialization of operational affairs were introduced combined with consensus mechanisms such as blockchain.At the same time,their principlest,advantages,limitations,and different utilities in terms of security constraints were discussed,and then the future development trends and follow-up research directions were point out at last,which would provide a reference and help for the research in this field.…”
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