Conserved Control Path in Multilayer Networks

The determination of directed control paths in complex networks is important because control paths indicate the structure of the propagation of control signals through edges. A challenging problem is to identify them in complex networked systems characterized by different types of interactions that form multilayer networks. In this study, we describe a graph pattern called the conserved control path, which allows us to model a common control structure among different types of relations. We present a practical conserved control path detection method (CoPath), which is based on a maximum-weighted matching, to determine the paths that play the most consistent roles in controlling signal transmission in multilayer networks. As a pragmatic application, we demonstrate that the control paths detected in a multilayered pan-cancer network are statistically more consistent. Additionally, they lead to the effective identification of drug targets, thereby demonstrating their power in predicting key pathways that influence multiple cancers.     

ACTIVE CONTROL OF A FLEXIBLE CANTILEVER PLATE WITH MULTIPLE TIME DELAYS

Active control of a flexible cantilever plate with multiple time delays is investigated using the discrete optimal control method. A controller with multiple time delays is presented. In this controller, time delay effect is incorporated in the mathematical model of the dynamic system throughout the control design and no approximations and assumptions are made in the controller derivation, so the system stability is easily guaranteed. Furthermore, this controller is available for both small time delays and large time delays. The feasibility and efficiency of the proposed controller are verified through numerical simulations in the end of this paper.     

Comparison of Volatile Profiles of Meads and Related Unifloral Honeys: Traceability Markers

Volatile profiles of unifloral honeys and meads prepared in different ways (boiled-saturated, not boiled-unsaturated) were investigated by headspace solid-phase micro extraction (HS-SPME) and dehydration homogeneous liquid–liquid extraction (DHLLE) followed by GC-FID/MS analyses. The obtained data were analyzed by principal component analysis (PCA) to evaluate the differences between the investigated products. The volatile profiles of honey as well as the boiled and the not boiled meads prepared from it showed significant discrepancies. The meads contained more aliphatic acids and esters but fewer monoterpenes and aliphatic hydrocarbons than the honey. Significant/substantial differences were found between the boiled (more aliphatic alcohols and acids) and the not boiled meads (more aliphatic hydrocarbons and esters). Some compounds related to yeast metabolism, such as tryptophol, may be considered markers of honey fermentation. This research allowed us to identify chemical markers of botanical origin, retained and detectable in the meads: 4-isopropenylcyclohexa-1,3-diene-1-carboxylic acid and 4-(1-hydroxy-2-propanyl)cyclohexa-1,3-diene-1-carboxylic acid for linden; valeric acid, γ-valerolactone, p-hydroxybenzoic acid for buckwheat; 4-hydroxybenzeneacetic acid, homovanillic acid and trans-coniferyl alcohol for honeydew; and methyl syringate for canola.     

林杏琴会堂的音质分析及改进设想

采用精密声级计和双通道声学分析仪，对林杏琴会堂的声场分布、噪声本底和混响时间作了分区测试，应用建筑声学理论对会堂的音质状况进行了分析，并提出改善会堂音质的若干建议．     

施工项目技术经济综合管理研究

本文主要分析和总结了有关施工项目管理中的人力资源管理、施工质量控制、施工进度与成本控制、合同管理以及信息技术的应用等方面存在的突出问题以及科学、有效的解决办法,可为类似项目管理或研究提供参考．从对施工项目管理研究中得出的结论对加快施工进度、降低工程成本、提高工程质量具有重要的实际意义和广泛推广的经济价值．     

电机驱动微装配在双光子制备微结构中的应用

对微结构的制作、微装配系统进行了研究. 采用飞秒激光双光子聚合微加工技术制作有底座、精细的三维立体“拱形”微结构, 其高250μm、长300μm、厚50μm. 将此微结构与实验室自主搭建的二维微装配平台相结合, 利用自主编程的人机交互界面驱动步进电机, 远程操控微装配设备; 将荧光闪烁陶瓷粉末装配到微结构中, 对装配后的微结构进行荧光光谱表征发现, 纯荧光粉末和微结构中的荧光粉末的发射光谱在测量误差范围内基本一致, 表明荧光粉末的光学性质未发生改变. 利用该装置可以将各类微纳米级材料和微结构进行装配, 形成含有不同材料的微结构系统.     

基于双脉宽调制技术的DC-DC电源设计

针对电力设备对直流供电电源的要求,采用可以有效抑制输出电压纹波与输出电流谐波的双脉宽调制方式为开关管的控制方法,在此基础上对采用该技术的DC-DC电源设计进行了研究.首先完成电源的方案设计,并对电源控制系统进行详细的理论分析与计算,最后通过对设计电源的动态响应速度、抗输入扰动能力与抗负载突变能力等指标的实验,对电源的设...     

基于用户驱动的网络中心战指挥控制系统研究

指挥控制系统是网络中心战实施的关键环节。通过对网络中心战指挥控制系统的研究, 提出一种基于用户驱动的指挥控制系统概念模型, 并以战役对抗为例, 实现了一种网络中心战的指挥控制系统作战流程, 并在VStasker仿真平台上进行了对抗部分的仿真和验证, 对网络中心战指挥控制系统的具体实现进行了有益的探索。     

传感器部分失效的网络控制系统H_∞容错控制

针对存在固定时滞和外部扰动的网络控制系统,建立了其传感器部分失效的控制输入数学模型。为了降低对于网络传输的要求,采用状态增广以克服时滞对网络控制系统分析的影响。通过构造适当的Lyapunov函数,并运用H∞控制理论和线性矩阵不等式方法(LMI),导出了网络控制系统H∞容错控制器存在的条件及具体方法。最后通过一个仿真算例证明了方法的可行性和有效性。     

适用于纹波控制型DC-DC控制器的比较器设计

设计一种适用于纹波控制（Output-Ripple-Based Control）的Buck型DC-DC控制器的比较器,根据PSIM搭建的仿真模型,分析主环比较器性能对系统的影响,设计具有三级预放大的高增益,低延时,低失调电压的比较器电路,采用两种温度系数的电流补偿比较器增益,稳定增益,采用0.5umBiCOMS工艺进行仿真验证,下降沿延时27ns,增益123dB,随温度最大增益变化3.2%,失调电压90uV,达到系统要求。