On ℤ2ℤ2[u]-additive codes

In this paper, a new class of additive codes which is referred to as ?₂ ?₂[u]-additive codes is introduced. This is a generalization towards another direction of recently introduced ?₂ ?₄-additive codes [J. Borges, C. Fernández-Córdoba, J. Pujol, J. Rif´a, and M. Villanueva, ?₂ ?₄-linear codes: Generator matrices and duality, Designs Codes Cryptogr. 54(2) (2010), pp. 167–179]. ?₂ ?₄-additive codes have shown to provide a promising class of codes with their algebraic structure and applications such as steganography. The standard generator matrices are established and by introducing orthogonality the parity-check matrices are also obtained. A MacWilliams-type identity that relates the weight enumerator of a code with its dual is proved. Furthermore, a Gray map that maps these codes to binary codes is defined and some examples of optimal codes which are the binary Gray images of ?₂ ?₂[u]-additive codes are presented.     

Control 5.0: From Newton to Merton in Popper's Cyber-Social-Physical Spaces

The future of control in cyberspace of parallel worlds is discussed. It argues for the coming age of Control 5.0, the control technology for the new IT capable of dealing with artificial worlds with VR, AR, AI and robotics. The discipline of automation needs a new interpretation of its core knowledge and skill set of modeling, analysis, and control for cyber-socialphysical systems, and a paradigm shift from Newtonian Systems with Newton's Laws or Big Laws with Small Data to Mertonian Systems with Merton's Laws or Small Laws with Big Data.      

三峡—葛洲坝梯级水利枢纽调度关键数据分析

针对三峡—葛洲坝梯级水利枢纽运行的流量、水位、电力数据进行相关分析研究,揭示出三峡出库流量与葛洲坝入库流量、葛洲坝毛水头与耗水率、葛洲坝出库流量与葛洲坝下游水位相互关系和变化规律,并根据拟合的关系线制成关系表,以指导葛洲坝工程出力预报及修订水库调度出力计划。     

浅谈高职计算机专业的创新教育

如何在计算机教育中培育具有创新能力和创新意识的新型人才是高职计算机专业亟待解决的问题,只传授知识、技能的传统的教学方法已不能满足培养创新型人才的需求。从计算机教学中存在的问题出发,提出支撑创新型人才培养的相关改革措施。     

αB-spline: a linear singular blending B-spline

A linear singular blending (LSB) technique can enhance the shape—control capability of the B-spline. This capability is derived from the blending parameters defined at the B-spline control vertices and blends LSB line segments or bilinear surface patches with the B-spline curve or surface. Varying the blending parameters between zero and unity applies tension for reshaping. The reshaped curve or surface retains the same smoothness properties as the original B-spline; it possesses the same strict parametric continuities. This is different from the -spline, which introduces additional control to the B-spline by imposing geometrical continuities to the joints of curve segments or surface patches. For applications in which strict parametric continuities cannot be compromised, LSB provides an intuitive way to introduce tension to the B-spline.     

一阶滞后对象的温度控制

本文主要介绍了利用μ XL中小型集散控制系统,对未知参数的一阶惯性滞后对象,实现温度控制,并得到理想的温度控制曲线。     

双腹板、顶底角钢半刚性连接节点的非线性有限元分析

用ANSYS有限元程序对双腹板、顶底角钢半刚性连接节点的非线性性能进行了理论分析,并将计算结果与试验结果进行了比较,两者吻合较好.通过对7个系列共23个双腹板、顶底角钢连接试件的有限元分析,重点探讨了连接的各类组件对节点力学性能的影响.结果表明:梁截面高度、顶底角钢厚度及与柱翼缘相连的顶底角钢螺栓间距对节点力学性能的影响较大;腹板角钢厚度对节点力学性能有一定的影响;柱腹板水平加劲肋、柱截面高度和螺栓直径对节点力学性能的影响较小.双腹板、顶底角钢连接梁柱节点属于典型的半刚性连接节点,建议在设计中考虑其对结构受力性能的影响.     

从H∞到Bloch空间的积分算子特性研究

研究单位圆盘上从有界解析函数空间到Bloch空间的积分算子Cφn,u的有界性和紧性。讨论算子IgCφ和JgC,当n=1时,u（z）=φ（z）g（z）,积分算子Cφn,u为Cφn,u;当n=0时,u（z）=g≮z）,积分算子Cφn,u为JgCφ在此基础上,通过推导得到从有界解析函数空间到Bloch空间的积分算子的有界性和紧性的充要条件。     

量子电压标定的噪声温度计系统设计

针对传统噪声温度计2个噪声源的功率和阻抗不能同时匹配的问题,为实现热力学温度自动化准确测量,以量子电压任意波形合成技术为基础,合成频率、幅度已知的赝噪声源作为参考端信号,并以高精度数字分析仪PXI—5922为数据采集平台,完成量子电压标定的噪声温度计系统设计。初步实验结果表明:此系统运行良好,可以实现水三相点热力学温度的准确测量。