New blind adaptive approach to multiuser detection in CDMA systems

Due to a number of advantages, blind adaptive multiuser detector has become a research hotspot in recent years. But low convergence rate problem occurs to many blind adaptive algorithms. A new blind adaptive approach to multiuser detection is presented. The simulation results show that by reasonably choosing time varying step size, the proposed detector can not only improve the convergence rate, but also reduce the bit error rate (BER) of the system, and so it can effectively improve the system performance with less computational cost.     

Novel clutter map CFAR algorithm with amplitude limiter

The traditional clutter map constant false alarm rate (CM-CFAR) detector is affected by interference and self-masking[1] which will cause the low probability of detection. To solve these problems, a novel algorithm named clutter map CFAR with amplitude limiter (ALCM-CFAR) is proposed, in which the amplitude of the input signal is limited by a filter. The simulation results prove the effectiveness of ALCM-CFAR algorithm.     

A STACKELBERG DIFFERENTIAL GAMES SOLUTION TO A PROBLEM OF OPTIMAL INTERTEMPORAL INVESTMENT AND TAX RATE DESIGN

Using the Stackelberg differential games(SDG) theory, we quantitatively study a problem of optimal intertemporal investment and tax rate design. Under some appropriate assumptions, the open-loop Stackelberg equilibrium solutions are obtained. Equilibrium solutions show that: 1. The optimal strategies derived from differential game and unilateral optimal control approaches are different; 2. It is not always the best strategy for the government to use a constant tax rate over the whole time period; 3. The admissible size of tax rate adjustment may have great effect on the government's optimal strategy; 4. SDG approach has no significant effect on the firm's optimal investment strategy.     

Project Boundary Setting and Leakage Treatment in CDM Project

Project boundary setting and leakage treatment are two important issues to be considered when a clean development mechanism (CDM) project is being designed. There are still many uncertainties concerning these two issues. This paper reviews the concepts of project boundary setting and leakage in CDM projects, cites the types and sources of leakage, discusses the principles for determining leakage, and gives some proposed methods for dealing with leakage. A case study, using several steps to solve the boundary and leakage problems, shows how the analyzed principles and treatments can be implemented in a real project. Based on the result of the case study, the methods discussed are shown to be appropriate for settling leakage issues.     

大型电渗析器等效计算方法研究

研究了根据小型电渗析器的试验运行数据，设计生产大型电渗析器的淡水产量、脱盐率以及所需的膜对数和段数计算方法，并介绍了工程设计使用实例．     

基于失效数据和统计推断优先的任务可靠性评估方法

论述了复杂武器系统任务可靠性计算的一般要求和计算任务可靠度及MTBCF的基本计算方法。通过具体示例,说明了复杂系统的寿命分布是指数型的说法并不总是正确的,应通过数据检验来确定其分布,否则,计算结果有很大误差。     

分析提高单手肩上投篮命中率的方法

系统全面地阐述了单手肩上投篮正确的动作方法、教学与训练方法和教学与训练中应注意的事项及要点，并明确指出在提高身体素质、心理素质和有强烈的投篮欲望，投篮时自信、控制、集中、出手果断、动作稳定是提高单手肩上投篮命中率的最有效的方法。因此，投篮命中率的高低和投篮次数多少是决定比赛胜负的关键。     

城市老年贫困群体形成因素分析

在人口老龄化的进程中,出现了一个特殊群体,即城市老年贫困群体,这一群体是原本就脆弱的老年群体中更为脆弱的一部分。他们的出现使人口老龄化问题更加复杂。从人口因素、社会因素、经济因素三个方面分析城市老年贫困群体形成的原因,以期寻找解决老年贫困问题的途径。     

早期限食可提高肉食鸡生产效益

近年来，欧美许多国家采用一种称作“早期限食法”的饲喂方式饲养肉食鸡．这种饲喂方式． 的好处有如下几点：第一，降低料肉比，减少生产成本。第二，提高瘦肉率，增加效益。第三，骨骼发育良好，减少死亡．     

山区数字微波电路的多径衰落及中断预测

本文分析了山区条件下，多径衰落对数字微波的影响，提出一种数字微波中断率预测方法和相应计算公式，并用于工程实例中。