反馈型振荡器起振条件的新研究

阐述了目前被广泛应用的对于反馈型振荡器的分析方法在描述起振条件和稳定条件时存在严重的逻辑缺陷。提出了一种普适的起振条件判据,推导出两组具体而又具有实际指导意义的起振条件判据,阐明了不存在“频率稳定条件”的理由。     

实现经济增长方式转换的条件和难点探讨

经济增长方式从粗放型到集约型的转换，是实现＂九五＂和２０１０年奋斗目标的关键之一。但从目前的实际和今后的发展看，要实现这一历史性的转换，还存在着许多困难，需要创造和具备一定的条件。因此，要辩证地认识经济增长方式转换中的有关理论问题，同时根据不同部门、不同行业和不同区域之间的差异情况采取结构转换的对策。     

非退化扩散过程极性的充分条件

讨论了多维非退化扩散过程样本轨道的性质,得到了其极性的充分条件     

化学反应中的非线性现象

本文以“水中花园”和“化学振荡”等实验事实,论述了化学反应中的自然分形和自组织过程等非线性现象.     

Factors associated with expectation of household's future financial condition

Path analysis is used to examine the causal relationships among selected objective and subjective factors associated with a household's expectation of future financial condition. Results indicate that respondents who perceive the effect of changes in the external environment on their own household's financial condition as positive are younger, have higher net worth, perceive more internal control over their situation, and report that most of the changes in the external environment are positive. Respondents who are younger, have higher income, perceive more internal control over their situation, and believe the effect of changes in the external environment on their household's financial condition are positive are more likely to be optimistic about their financial future. It is important that educators and financial advisors recognize the significant role perception of being in control plays in determining expectations of future financial condition.Journal Paper No. J-15256 of the Iowa Agriculture and Home Economics Experiment Station, Project No. 2809. Data were collected in conjunction with the cooperative regional research project NC-182, Family Resource Utilization as a Factor in Determining Economic Well-Being of Rural Families. Cooperating states are Arizona, California, Illinois, Indiana, Iowa, Kansas, Michigan, and Minnesota.Her current research interests include family financial management and consumer bankruptcy; she received her Ph.D. from the University of Missouri.She received her Ph.D. from the University of Illinois; her current research interests include gender roles, family financial management, and economic well-being.She received her Ph.D. from the University of Illinois. Her research interests are economic well-being and quality of life.Her current research interests include the economic well-being of various family forms. She received her Ph.D. from the University of Illinois.     

阶梯电价背景下基于贝叶斯分析的用电需求模型

阶梯电价不仅引导居民合理、节约用电,而且减少了用户之间的电价交叉补贴,但在实际应用中存在多种不确定因素,如居民用电需求变动以及各档电量的确定范围等。针对居民用电需求变动,本文提出了基于贝叶斯估计方法的阶梯电价用电需求模型。首先提出基于阶梯电价的需求函数;其次对阶梯电价用电需求函数进行贝叶斯分析,分别从统计模型、似然函数、后验分布以及加速收敛四个方面分析;最后,对1250个用户的用电数据进行估计,将影响因素带入模型得出各用户的用电需求,确定了贝叶斯估计对用电需求模型构建的适用性。     

Anticipated Backward Stochastic Differential Equation with Reflection

In this article, we deal with anticipated backward stochastic differential equation with reflecting boundary. The existence and uniqueness of solution is obtained for equation with Lipschitz and non-Lipschitz generator.     

Quantile Regression for Location‐Scale Time Series Models with Conditional Heteroscedasticity

This paper considers quantile regression for a wide class of time series models including autoregressive and moving average (ARMA) models with asymmetric generalized autoregressive conditional heteroscedasticity errors. The classical mean‐variance models are reinterpreted as conditional location‐scale models so that the quantile regression method can be naturally geared into the considered models. The consistency and asymptotic normality of the quantile regression estimator is established in location‐scale time series models under mild conditions. In the application of this result to ARMA‐generalized autoregressive conditional heteroscedasticity models, more primitive conditions are deduced to obtain the asymptotic properties. For illustration, a simulation study and a real data analysis are provided.     

Exponential Inequalities in Stochastic Inverse Problems Using an Iterative Method

We consider an iterative method in order to solve linear inverse problems. We establish exponential inequalities for the probability of the distance between the approximated solution and the exact one for a calibration problem. The approximate is given by an iterative method with Gaussian errors. We treat an operator equation of the form Ax = u, where A is a compact operator.     

基于模糊理论的城市快速路交通状态检测算法

通过分析流量、速度、占有率与城市快速路交通状态的关系,提出了一种基于模糊理论的城市快速路交通状态检测算法。通过在深圳市某快速路上的实际验证表明,该算法在能保证一定的检测率情况下,具有较低的误报率和较少的检测时间,表明此方法在实际应用中是切实可行的。