单神经元自适应PID(Proportional integral derivative)控制系统,具有自学习和自适应能力,而且结构简单、易于计算、响应速度快、设定参数少等特点,可以在一定程度上解决传统PID控制器不能对参数时变系统进行有效控制的问题,在离子流除...单神经元自适应PID(Proportional integral derivative)控制系统,具有自学习和自适应能力,而且结构简单、易于计算、响应速度快、设定参数少等特点,可以在一定程度上解决传统PID控制器不能对参数时变系统进行有效控制的问题,在离子流除静电装置中引入单神经元自适应PID控制,显著提高了现有离子流除静电装置的自动化程度,实现了自动检测、自动调整,实时监控,提高了工作效率,减少了人为误差,取得了较好的效果.展开更多
Frequency domain wave equation forward modeling is a problem of solving large scale linear sparse systems which is often subject to the limits of computational efficiency and memory storage. Conventional Gaussian elim...Frequency domain wave equation forward modeling is a problem of solving large scale linear sparse systems which is often subject to the limits of computational efficiency and memory storage. Conventional Gaussian elimination cannot resolve the parallel computation of huge data. Therefore, we use the Gaussian elimination with static pivoting （GESP） method for sparse matrix decomposition and multi-source finite-difference modeling. The GESP method does not only improve the computational efficiency but also benefit the distributed parallel computation of matrix decomposition within a single frequency point. We test the proposed method using the classic Marmousi model. Both the single-frequency wave field and time domain seismic section show that the proposed method improves the simulation accuracy and computational efficiency and saves and makes full use of memory. This method can lay the basis for waveform inversion.展开更多
Contemporary Hollywood films seem at first glance to be opposed to capital punishment. However, this article＇s consideration of five surprisingly similar films （Dead Man Walking, The Chamber, Last Dance, True Crime,...Contemporary Hollywood films seem at first glance to be opposed to capital punishment. However, this article＇s consideration of five surprisingly similar films （Dead Man Walking, The Chamber, Last Dance, True Crime, and The Life of David Gale） finds that they do not truly and consistently condemn capital punishment. Instead of suggesting that the practice of capital punishment is fundamentally immoral and should in general be ended, the films champion only worthy individuals on death row and delight primarily in the personal growth of other characters who attempt to aid the condemned. In the end, Hollywood offers only a muted message regarding the on-going use of capital punishment.展开更多
文摘单神经元自适应PID(Proportional integral derivative)控制系统,具有自学习和自适应能力,而且结构简单、易于计算、响应速度快、设定参数少等特点,可以在一定程度上解决传统PID控制器不能对参数时变系统进行有效控制的问题,在离子流除静电装置中引入单神经元自适应PID控制,显著提高了现有离子流除静电装置的自动化程度,实现了自动检测、自动调整,实时监控,提高了工作效率,减少了人为误差,取得了较好的效果.
基金supported by China State Key Science and Technology Project on Marine Carbonate Reservoir Characterization (No. 2008ZX05004-006)
文摘Frequency domain wave equation forward modeling is a problem of solving large scale linear sparse systems which is often subject to the limits of computational efficiency and memory storage. Conventional Gaussian elimination cannot resolve the parallel computation of huge data. Therefore, we use the Gaussian elimination with static pivoting （GESP） method for sparse matrix decomposition and multi-source finite-difference modeling. The GESP method does not only improve the computational efficiency but also benefit the distributed parallel computation of matrix decomposition within a single frequency point. We test the proposed method using the classic Marmousi model. Both the single-frequency wave field and time domain seismic section show that the proposed method improves the simulation accuracy and computational efficiency and saves and makes full use of memory. This method can lay the basis for waveform inversion.
文摘Contemporary Hollywood films seem at first glance to be opposed to capital punishment. However, this article＇s consideration of five surprisingly similar films （Dead Man Walking, The Chamber, Last Dance, True Crime, and The Life of David Gale） finds that they do not truly and consistently condemn capital punishment. Instead of suggesting that the practice of capital punishment is fundamentally immoral and should in general be ended, the films champion only worthy individuals on death row and delight primarily in the personal growth of other characters who attempt to aid the condemned. In the end, Hollywood offers only a muted message regarding the on-going use of capital punishment.
