一种新型的快速无超调预测控制器及其应用

该文采用一种比例积分型结构，建立了一种无超调预测控制器，通过钻杆热处理的退火过程控制的仿真研究，验证了该控制器的有效性。     

精炼渣配比的优化

本文论述了精炼脱硫渣所需的最少石灰加入量以及加合成渣的最好时机。     

比例导引下的机动目标自适应滤波算法研究

针对反舰导弹的快速跟踪问题,在反舰导弹做比例导引运动的基础上,将比例导引规律引入状态方程,建立线性时变模型,实现对系统状态的自适应滤波,运用语言进行仿真计算,分析并得到了在不同的初始航向角、比例导引系数、导弹的初始位置和速度下的导引弹道滤波曲线和弹目相遇时间.仿真结果表明,导弹的运动数学模型是实用而有效的,较准确地反映目标的机动变化;在此基础上的机动目标跟踪模型在原理上是正确的,由此构建的滤波器能够较快地收敛,其跟踪精度较高.     

Estimation of the proportion of true null hypotheses in high-dimensional data under dependence

In multiple testing, a challenging issue is to provide an accurate estimation of the proportion π₀ of true null hypotheses among the whole set of tests. Besides a biological interpretation, this parameter is involved in the control of error rates such as the False Discovery Rate. Improving its estimation can result in more powerful/less conservative methods of differential analysis. Various methods for π₀ estimation have been previously developed. Most of them rely on the assumption of independent p-values distributed according to a two-component mixture model, with a uniform distribution for null p-values. In a general factor analytic framework, the impact of dependence on the properties of the estimation procedures is first investigated and exact expressions of bias and variance are provided in case of dependent data. A more accurate factor-adjusted estimator of π₀ is finally presented, which shows large improvements with respect to the standard procedures.     

Assessing facial beauty through proportion analysis by image processing and supervised learning

Perception of universal facial beauty has long been debated amongst psychologists and anthropologists. In this paper, we perform experiments to evaluate the extent of universal beauty by surveying a number of diverse human referees to grade a collection of female facial images. Results obtained show that there exists a strong central tendency in the human grades, thus exhibiting agreement on beauty assessment. We then trained an automated classifier using the average human grades as the ground truth and used it to classify an independent test set of facial images. The high accuracy achieved proves that this classifier can be used as a general, automated tool for objective classification of female facial beauty. Potential applications exist in the entertainment industry, cosmetic industry, virtual media, and plastic surgery.     

模糊自整定PID温度控制系统的建模与仿真

针对炒茶机的加热控制系统跟踪设定的温度值滞后、自动调节加热装置实时性差的问题,设计一种模糊自整定比例积分微分(PID)参数控制器。采用PID控制和模糊控制算法相结合的方法,实现模糊控制对PID参数的调整。利用Matlab在Simulink中建立模型,并对该控制器进行仿真分析。结果表明,模糊PID自整定控制器的超调量 ≈1%,稳态误差es=0。该方法可提高温度控制系统的性能。     

Crowd-Driven Pattern Formation: Computational Strategies for Large-Scale Design and Assembly

Digital fabrication has its limits where large-scale operations are concerned. Computers may offer enormous advantages in terms of speed and precision, but they cannot match humans' capacity for complex contextual decision-making. Massachusetts-based designer Marcelo Coelho , and research scientist Tovi Grossman of Autodesk Research in Toronto, present three major recent installations that explore how to make the most of both.     

PLC在带式输送机闭环控制的应用

阐述了带式输送机电控系统的组成,采用西门子S7-200 PLC可编程控制器在系统进行各种开关量和模拟量的采集和控制,包括速度信号的计算以及油压模拟量的采集等。重点阐述了PID控制原理以及如何对速度实现闭环控制,使带式输送机按照预定速度曲线进行软启动,并按照规定的速度正常工作,最终实现PLC对带式输送机的电控要求。     

佛宫寺平面组合中的比例控制浅析

该文揭示了佛宫寺平面的全部建筑平面位置,在以塔底进深的一半为模度控制的基础上,结合√2比例控制而确定。     

谈城市基础设施建设比例关系

城市基础设施的建设可以带动和保证城市经济持续，稳定的发展，但前提是只有在各项基础设施建设达到合理比例时，才能使城市整体效益最优，为此，城市基础设施建设的投资应与城市GDP，固定资产投资有适宜的比例。结合国内外经验，通过对浙江苍南县城市基础设施建设投资比例现状的对比研究，得出苍南城市基础设施占GDP百分比保持在10%～20%，城市基础设施投资占固定资产投资的百分比保持在25%～30%时为最佳的结论。