《周易》“六十四卦图”解(下)

通过论证"龟甲九宫"与"八卦图"组成"九宫八卦图",进而揭示出"八卦相重(八乘八)成六十四卦"的生成原理,纠正了《易》学界流传至今的宋代邵雍、朱熹所谓"八卦变十六卦变三十二卦变六十四卦"错误理论。     

第9届世界健美操锦标赛男子单项决赛难度动作位序分析

运用图像分析、文献资料调研、数理统计等研究方法,对第9届世界健美操男子单项决赛前8名运动员难度动作出现的位序与成绩关系进行分析。研究显示,成套难度动作位序布局的合理性、难度动作类别创编的均衡性与运动成绩呈正相关;难度动作的选择应与运动员的实际身体素质水平和专业技术水平相吻合,难度动作才能完成得轻松优美,才能充分展现男子单项目运动员的个性化特点,“难”与“美”的结合仍然是当今健美操制胜的关键。     

Ds-echinoside A, a new triterpene glycoside derived from sea cucumber, exhibits antimetastatic activity via the inhibition of NF-κB-dependent MMP-9 and VEGF expressions

Ds-echinoside A (DSEA), a non-sulfated triterpene glycoside, was isolated from the sea cucumber Pearsonothuria graeffei. In vitro and in vivo investigations were conducted on the effects of DSEA on tumor cell adhesion, migration, invasion, and angiogenesis. In this study, we found that DSEA inhibited the proliferation of human hepatocellular liver carcinoma cells Hep G2, with a half-maximal inhibitory concentration (IC₅₀) of 2.65 μmol/L, and suppressed Hep G2 cell adhesion, migration, and invasion in a dose-dependent manner. DSEA also reduced tube formation of human endothelial cells ECV-304 on matrigel in vitro and attenuated neovascularization in the chick embryo chorioallantoic membrane (CAM) assay in vivo. Immunocytochemical analysis revealed that DSEA significantly decreased the expression of matrix metalloproteinase-9 (MMP-9), which plays an important role in the degradation of basement membrane in tumor metastasis and angiogenesis. DSEA also increased the protein expression level of tissue inhibitor of metalloproteinase-1 (TIMP-1), an important regulator of MMP-9 activation. From the results of Western blotting, the expressions of nuclear factor-kappa B (NF-κB) and vascular endothelial growth factor (VEGF) were found to be remarkably reduced by DSEA. These findings suggest that DSEA exhibits a significant antimetastatic activity through the specific inhibition of NF-κB-dependent MMP-9 and VEGF expressions.     

模糊控制在恒温控制系统中的应用

根据材料拉伸试验对加热炉的控制要求,本文设计了一种PID控制与模糊控制相结合的智能恒温控制系统.系统的核心控制单元采用具有模糊指令的MC9S12DG128单片机,通过在线模糊推理来实时调整PID的控制权重,实现温控系统的分段控制.实践表明,该系统具有较好的控制性能.     

涡旋辅助浊点萃取滇重楼中偏诺皂苷的方法学研究

建立采用涡旋辅助浊点萃取滇重楼提取物中4个偏诺皂苷类成分,以非离子表面活性剂脂肪醇聚氧乙烯醚 AEO －9为萃取剂,V（乙腈）∶V（水）＝38∶62为流动相,对富集的偏诺皂苷进行高效液相色谱快速分离的方法．最优实验条件为,AEO －9用量为110μL,正戊酸用量为150μL,pH 为9,平衡温度为40℃,平衡时间为15 min．结果表明,检测出滇重楼中4个偏诺皂苷 VI,VII,Pa 及 H 的质量分数分别为0．9923％,1．3603％,3．3444％及1．6663％,检测限达3．2～4．0μg／L,RSD 低于0．5％,定量限为6．6～8．3μg／L,线性范围为10～500μg／L,萃取的富集倍数达到23倍,萃取的回收率为98．68％～102．46％．     

基于嵌入式控制器的直线倒立摆最优控制研究

倒立摆系统是典型的非线性、多变量、强耦合的系统,广泛应用于对各种控制理论和控制策略的有效性的检验。文中仅使用固高公司提供的伺服电机驱动器和倒立摆本体,另行设计了ARM控制器、信号连接电路,编写了运动控制函数库,搭建了一套基于ARM控制器和Linux系统的倒立摆控制系统,并在该实验平台使用PID,极点配置,LQR等算法完成仿真实验,并运用LQR对实际系统进行控制,实现了良好的控制效果。     

基于arm的家用清洁机器人的控制系统设计

文章提出了一种基于ARM处理器的家用清洁机器人控制系统,包括硬件设计和软件设计。硬件部分包括主控器模块、电源及欠压检测模、传感器模块、人机交互模块、驱动模块以及清洁模块。软件部分设计了清洁机器人的主要控制流程。该控制系统以通用性和功能完备为目标,使机器人具备智能清洁能力。     

光电传感器式太阳跟踪控制器的设计

太阳能是一种清洁、可再生能源,太阳能电池发电的方式成为当前能源发展战略的重要部分。如何使太阳能电池板最大限度的吸收太阳能,太阳跟踪器较好的解决了该问题。详细介绍了光电传感器式太阳跟踪控制器的主要设计方法和针对阴天、多云天气的软件抗干扰设计。     

湖北省竞技体育现状及发展对策

湖北省竞技体育在九运会的金牌名次有所提升，但不容乐观。奖牌数、总分数和参加决赛的人数与八运会相比，呈现出下滑的趋势，暴露出湖北省竞技体育基础力量薄弱和后备人才匮乏。针对湖北省竞技体育存在 的主要问题，应采取积极、持续发展的对策，优化项目设置与布局，加强后备力量的储备和培养，建立科技攻关服务体系，以促进竞技体育综合实力的提升。     

Introducing veteran critical theory

Research on student veterans is in an infant state. As veterans continue to enroll in institutions of higher education, researchers must explore new ways of knowing student veterans. It is not enough to only describe and model this growing demographic, researchers must also have a tool for criticism and question. The next in an important tradition of emancipatory paradigms, this article suggests a critical theory built on current critical conversations but adapted for the unique characteristics of the student veteran. The article defines the need for a critical theory (Veteran Critical Theory), explains 11 tenets for this new theory, and discusses how these tenets could be used by administrators, faculty, student affairs professionals, and students in the higher education community.