检索结果-南通市图书馆

人工智能与政治安全形态演变:一项系统研究的尝试

在线全文

学校读者我要写书评

暂无评论

国际安全研究 2025年第1期43卷 54-72,156,157页

作者：封帅薛世锟上海国际问题研究院网络空间国际治理研究中心上海国际问题研究院上海200233

在人工智能时代,政治安全的内涵正在被不断深化和持续拓展,各国面临的政治安全风险也愈发复杂。根据系统科学理论,政治安全可以构建为一种政治安全系统,包含正反要素、四大结构面与动态稳定的功能。人工智能在经历从游离到输入的时序过... 详细信息

在人工智能时代,政治安全的内涵正在被不断深化和持续拓展,各国面临的政治安全风险也愈发复杂。根据系统科学理论,政治安全可以构建为一种政治安全系统,包含正反要素、四大结构面与动态稳定的功能。人工智能在经历从游离到输入的时序过程后,作为一种新的要素与政治安全系统发生互动。人工智能与政治安全的互动遵循“技术—应用—风险—系统”的逻辑过程,并实现对系统内其他要素的影响。这种影响全面且深刻,使得人工智能开始大面积嵌入政治安全系统,重构了政治安全结构。政治安全正在面临人工智能所带来的更复杂的风险形态,包括权力安全、制度安全与价值安全在内的政治安全内部生态都将发生深刻变化,推动整个政治安全形态经历深刻的变革。

关键词：人工智能政治安全国家安全系统科学

Perioperative nutrition optimization:a review of the current literature

在线全文

学校读者我要写书评

暂无评论

Frontiers of Nursing 2024年第2期11卷 127-137页

作者： Jin-shuai Li Wei-bing Shuang First Clinical Medical College Shanxi Medical UniversityTaiyuanShanxi 030001China Department of Urology The First Hospital of Shanxi Medical UniversityTaiyuanShanxi 030001China

Objective:This article aims to elaborate the recent research status of perioperative nutrition optimization,in order to help clinical ***:This study employed a comprehensive and systematic method to search prominent databases,including PubMed and Web of Science,using carefully selected *** meticulous screening,the inclusion of high-quality studies was prioritized,and a thorough review of the references was conducted to comprehensively analyze the latest evidence on perioperative nutrition ***:The main contents include preoperative nutritional risk screening and assessment,nutritional support pathway,immune enhancing nutrition,preoperative and postoperative nutritional management,as well as personalized nutrition optimization strategies for specific populations(such as children,bariatric surgery patients,and cancer patients).Conclusions:In clinical practice,the importance of perioperative nutrition should be emphasized,and personalized nutrition management plans should be developed based on the characteristics and needs of *** research and promotion of perioperative nutrition optimization strategies will help improve the overall prognosis and quality of life of surgical patients.

关键词： enteral nutrition immune enhancing nutrition nutritional screening and assessment parenteral nutrition perioperative

Modification strategies of Li_(7)La_(3)Zr_(2)O_(12) ceramic electrolyte for high-performance solid-state batteries

在线全文

学校读者我要写书评

暂无评论

Tungsten 2021年第3期3卷 260-278页

作者： Jian-shuai Lv Shao-Ke Guo Yan-bing He Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China

Enormous research focusing on solid-state electrolyte promotes the development of solid-state *** to lithium-ion batteries using liquid electrolyte,the solid-state batteries feature the hi gh energy density and non-flammability,which accelerates the revolution in portable electronics and ***-type Li_(7)La_(3)Zr_(2)O_(12)(LLZO)solid-state electrolyte is considered as the promising solid-state electrolyte due to high ionic conductivity,Li transference number and shear ***,surface contaminant and poor contact with lithium inhibit its practical application in lithium metal *** review provides a brief introduction about structure and properties of ***,we conclude the modification strategies for increasing ionic conductivity,enhancing interfacial contact and inhibiting lithium *** last,the challenge and perspectives are discussed for development of LLZO in solid-state batteries.

关键词： Li_(7)La_(3)Zr_(2)O_(12) Surface contaminant Elemental doping Interface modification Structure design Tungsten

Open-circuit fault diagnosis and fault tolerance for shunt active power filter

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2017年第11期24卷 2582-2595页

作者： PENG Tao ZHAO shuai DAN Han-bing YU Hua-xiong School of Information Science and Engineering Central South UniversityChangsha 410083China

The open-circuit fault of the power switches in shunt active power filter(SAPF) would exacerbate the harmonic pollution of power grid, and degrade the reliability of the devices and system. A fault diagnosis method is proposed based on reference model and an over-modulation strategy under hardware fault tolerance for SAPF. First, a mathematic model is established for SAPF. Second, the residuals are generated by comparing the outputs of reference model and those of actual model, and open-switch fault is detected and diagnosed by residual evaluation. After that, hardware fault tolerance is performed with the three-phase four-switch(TPFS) topology to isolate the faulty phase. Finally, the over-modulation strategy is proposed to increase the voltage transfer ratio of the TPFS topology. Simulation and experimental results verified the feasibility and effectiveness of the proposed method.

关键词： fault diagnosis fault tolerant reference model over-modulation three-phase four-switch topology shunt active power filter

Dynamic Data Updating Algorithm for Image Superresolution Reconstruction

在线全文

学校读者我要写书评

暂无评论

Geo-Spatial Information Science 2006年第3期9卷 196-200页

作者： TAN bing XU Qing ZHANG Yan XING shuai Jiangnan Remote Sensing and Application Research Center 158 Shaoniancun RoadShanghai 200436China.

A dynamic data updating algorithm for image superesolution is proposed. On the basis of Delaunay triangulation and its local updating property, this algorithm can update the changed region directly under the circumstances that only a part of the source images has been changed. For its high efficiency and adaptability, this algorithm can serve as a fast algorithm for image superesolution reconstruction.

关键词： image superresolution image interpolation image registration Delaunay triangulation

USP2a positively regulates TCR-induced NF-κB activation by bridging MALT1-TRAF6

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2013年第1期4卷 62-70页

作者： Yi Li Xiao He shuai Wang Hong-bing Shu Yu Liu College of Life Sciences Wuhan UniversityWuhan 430072China

The paracaspase MALT1 is essential for the activation of NF-κB in response to T cell receptor(TCR)*** recruits downstream TRAF6 and activates the E3 ligase activity of TRAF6 to polyubiquitinate several targets,which ultimately leads to NF-κB *** we identified ubiquitin-specific protease 2a(USP2a)as a MALT1-associated protein by biochemical affinity *** USP2a constitutively interacted with TRAF6,but dynamically interacted with MALT1 and CARMA1 in a stimulation-dependent *** interference(RNAi)-mediated silencing of USP2a attenuated TCR-induced NF-κB activation and production of interleukin-2(IL-2).In addition,the ubiq-uitination of MALT1 and TRAF6 were both suppressed by USP2a *** knockdown and reconstitu-tion assays,we found that USP2a mediated the interac-tion between MALT1 and TRAF6 in a catalytic activ-ity-dependent ***,USP2a deSUMOy-lated *** findings implicate that USP2a plays an important role in TCR signaling by deSUMOylating TRAF6 and mediating TRAF6-MALT1 interaction.

关键词： USP2a MALT1 TRAF6 T cell activation NF-κB

在线全文

学校读者我要写书评

暂无评论

轮毂电动机驱动车辆并联式复合制动策略

江苏大学学报（自然科学版） 2025年第1期46卷 9-17页

作者：付翔肖帅徐超武汉理工大学汽车工程学院湖北武汉430070

基于并联式轮毂电动机驱动实车构型,分析影响制动能量回收效率的主要因素,采用联邦卡尔曼滤波纵向车速估计算法,提出了三层式复合制动控制策略.该策略中的制动决策层根据踏板输入信号和行驶状态来识别制动工况,并进入相应的制动模式.制... 详细信息

基于并联式轮毂电动机驱动实车构型,分析影响制动能量回收效率的主要因素,采用联邦卡尔曼滤波纵向车速估计算法,提出了三层式复合制动控制策略.该策略中的制动决策层根据踏板输入信号和行驶状态来识别制动工况,并进入相应的制动模式.制动控制层根据制动决策层的指令,在常规制动工况下通过粒子群优化(PSO)算法优化前、后轮电制动力矩分配,实现电池有效回收效率最大化;紧急制动工况下,通过模糊自整定PID算法实现车辆在不同附着路面上各轮滑移率的安全有效控制,优化了制动防抱死控制的鲁棒性,提高制动安全性.制动执行层响应制动控制层的指令,设计了电制动补偿机制,以迅速补偿调节各轮轮缸的压力误差,提高车辆制动稳定性.最后实车验证了该复合控制策略的有效性.

关键词：轮毂电动机驱动车辆并联式复合制动粒子群优化制动能量回收模糊自整定PID

Flexible Humidity Sensitive Fiber with Swellable Metal-Organic Frameworks

在线全文

学校读者我要写书评

暂无评论

Advanced Fiber Materials 2021年第2期3卷 107-116页

作者： Sijia Lv Luyizheng shuai Wenfeng Ding Weiquan Ke bing Wang Junmin Wan National Engineering Lab of Textile Fiber Materials and Processing Technology Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China

Humidity sensors have become an essential need for improving daily life ***,a novel humidity sensitive fiber was fabricated using the soft polydimethylsiloxane(PDMS)as the core layer and the non-swellable polyvinylidenedifluoride(PVDF)embedded with a swellable MIL-88A as the outer ***,the PDMS fiber was chosen as a carrier due to its smoothness,softness and good tensile *** isoreticular FeIII dicarboxylate MIL-88 family with swellable metal-organic frameworks(MOFs)can undergo reversible dynamic structural transformations with a response to external humidity *** resulted fiber with swellable MOFs showed three kinds of deformation for a single solvent and also had good deformation performance for two-component miscible solution with different volume *** a proof of concept,a shape-memory effect at relative humidity from 10 to 90%and the simulated salt solutions instead of relative humidity changes were used to evaluate humidity *** addition,a deep insight into the self-shape-change mechanism among those phenomena was investigated,wherein expansion deformation of the PDMS fiber as well as the structural transforma-tion of the MIL-88A worked in different conditions.

关键词： Humidity sensitive MIL-88A MOFs PDMS fiber Shape-memory effect

Dynamic Performance Evaluation of a Redundantly Actuated and Over-constrained Parallel Manipulator

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2019年第3期16卷 274-285页

作者： Hai-Qiang Zhang Hai-Rong Fang bing-Shan Jiang shuai-Guo Wang School of Mechanical.Electronic and Control Engineering Beijing Jiaotong UniversityBeijing 100044China MH Robot&Automation Limited Company Wei fang 262200China

This paper presents a redundantly actuated and over-constrained 2 RPU-2 SPR parallel manipulator with two rotational and one translational coupling degrees of *** kinematics analysis is firstly carried out and the mapping relationship of the velocity,acceleration and the independent parameters between the actuator joint and the moving platform are deduced by using the vector dot product and cross product *** employing d′Alembert′s principle and the principle of virtual work,the dynamics equilibrium equation is derived,and the simplified dynamics mathematical model of the parallel manipulator is further ***,the generalized inertia matrix which can characterize the acceleration performance between joint space and operation space is further separated,and the performance indices including the dynamics dexterity,inertia coupling characteristics,energy transmission efficiency and driving force/torque balance are *** analysis results show that the proposed redundantly actuated and over-constrained 2 RPU-2 SPR parallel manipulator in comparison with the existing non-redundant one has better dynamic comprehensive performance,which can be demonstrated practically by the successful application of the parallel kinematic machine head module of the hybrid machine tool.

关键词： Redundantly actuated over-constrained parallel manipulator dynamics performance index