系统矩阵化为约旦阵的方法探讨

本文主要介绍将系统矩阵化为约旦阵的几种方法．     

Multiplicity in Continuous Adiabatic MSMPR Reactive Precipitators

The possibility of both concentration and temperature multiplicities has bcen studied for the case of acontinuous adiabatic mixed suspension mixed product removal(MSMPR)reactive precipitaior.A Process in-volving homogeneous chemical reaction in first order reaction kinetics with respect to each of the reactive compo-nents and subsequent crystallization described by conventional power law growth and power law magma depen-dent nucleation models is considered.The temperature dependency of each of these kinetics is described by Ar-rhenius relations.Parameter regions are determined in which multiple steady states exist.The linear stability ofthese steady states is analyzed by using the Routh criterion approach.     

Smoke flow bifurcation due to opposing buoyancy in two horizontally connected compartments

We consider two horizontally connected compartments with four openings and one compartment on fire; the height of one compartment is fixed, while that of the other varies. A simple small-scale experimental study using air was performed to demonstrate the existence of two stable flow solutions at the same height ratio. Moreover, a macroscopic zonal model is used to theoretically analyze smoke flow direction and smoke mass flow rate. Under different ranges of height ratio, four patterns of smoke flow are identified and studied. One of the solutions is unstable, while the other three solutions are stable, as shown by nonlinear dynamic analysis. Therefore, two stable solutions of smoke flow exist at the same height ratio and ambient conditions when the height ratio is larger than a critical value, and the critical value is shown to be a transcritical bifurcation point. The implications of smoke flow bifurcation on smoke control in an atrium or building with a stairwell are also discussed.     

Changing the dialogue between self voices during psychotherapy.

According to Dialogical Self Theory (DST) the self is composed of various characters, each of them portraying an aspect of an individual, and these characters, starting out from their various separate positions, enter into a dialogue and negotiate the meaning of events with each other. This theory is helpful in explaining the discourses that patients produce during psychotherapy and the way in which treatment alters the dialogical relationship between characters. Through the analysis of the clinical case of a patient, whose Self-Narratives were retraced and analyzed using the Self-Investigation method, I shall attempt to show what characters made up the patient's mental world, what type of dialogical relationship there was between them and what affect therapy had on them. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

一类带B-D反应项的非均匀Chemostat模型正解的存在性和多解性

本文研究一类带有Beddington-De Angelis反应函数的非均匀Chemostat模型正平衡态解的存在性和多解性.利用分歧理论考察了共存解的全局结构,得到了正平衡态解存在的充分条件.进而讨论了正平衡态解的稳定性和多解性,运用线性算子的扰动理论和不动点指数理论给出了正平衡态的多解条件.结果表明质粒载体微生物的最大生长率对正平衡态解的稳定性和多解性有很大影响.     

脊椎动物GnRH肽的分子多态性和功能

促性腺激素释放激素（GnRH）是在调控脊椎动物性腺发育和最后性成熟中起至关重要作用的一个保守神经十肽家族．从mGnRH被证实以来，已经从原索动物和脊椎动物神经组织中发现16种不同形式的GnRH肽．在已研究的脊椎动物中，cGnRH-Ⅱ肽在所有脊椎动物脑组织中存在并完全保守，然而发挥主要功能作用的一般都是在下丘脑和端脑中优势表达的种属特异性GnRH肽．与脑组织中存在多种类型GnRH肽相对应的是，在部分脊椎动物的垂体促性腺激素细胞膜上发现多种亚型的GnRH受体（GnRH—R）．GnRH基因或GnRH-R的缺失或突变将导致生物个体繁殖生理学功能出现异常或病变．根据这一原理，采用反义转基因技术，通过在脑水平控制鱼类性腺发育，已成功获得败育的转基因鲤鱼．采用该方法获得的转基因鱼在生态和遗传方面是安全的，将为转基因鱼的产业化提供一种新的技术保障．     

Dynamics and control of isolated wind-diesel power systems

In this paper a comparative dynamic stability study has been carried out for wind-diesel systems with multiplicity of generation. The mathematical model considered for dynamic stability evaluation is based on small signal analysis. The Lyapunov technique is used to evaluate the optimum setting of gain parameters and comparison is made with the values given in the literature. Additionally the diesel unit equipped with a supplementary proportional integral controller is also considered and its effect on the dynamic stability of the system is investigated. It is shown that the wind-diesel system with multiple wind generation has the minimum first swing of oscillations and also higher damping of subsequent swings for disturbances due to load or due to variations in input wind power. Finally, the dynamic responses of the different power systems considered with optimal gain setting are also presented.     

一类具有线性相位的二重多小波的构造

给出由实单一紧支撑正交的小波构造二重正交多小波的方法。具体地,首先由实单一的紧支撑尺度函数构造出单一紧支撑正交对称的复尺度函数,再由构造出的复尺度函数去构造二重正交紧支撑多尺度函数,然后给出由二重尺度函数构造二重小波的显式公式。紧支撑正交的单一小波除Haar小波外不具有任何对称性,它用作滤波器不可能有线性相位,而由实单一紧支撑正交的尺度函数构造出的二重尺度函数却是对称的,对应的二重小波可以是对称或反对称的,从而使得这种小波在信号处理的过程中具有线性相位。最后给出相应的构造算例。     

Steady state modeling of reactor-settler interaction

The work analyzes the interaction of a biological reactor and a settler coupled either via mass balance, exocellular polymer production or competition between flocculating and filamentous microorganisms. Pertinent experimental information is reviewed. Simple models are constructed to account for the necessary features of the interaction. The analysis reveals that chemical interaction should be correlated with sludge age and optimal operating conditions are derived. Biological interaction induces steady state multiplicity or coexistence of the two species. Recent observations of populations-shift dynamics are presented.     

The multifinality constraints effect: How goal multiplicity narrows the means set to a focal end.

In the presence of several objectives, goal conflict may be avoided via multifinal means, which advance all of the active goals at once. Because such means observe multiple constraints, they are fewer in number than the unconstrained means to a single goal. Five experimental studies investigated the process of choosing or generating such means for multiple goals. We found that the simultaneous activation of multiple goals restricted the set of acceptable means to ones that benefitted (or at least, did not harm) the entire set of active goals. Two moderators of this phenomenon were identified: (a) the feasibility of identifying multifinal means, which was dependent on the relations between the different active goals, and (b) the enhanced importance of the focal goal, which resulted in the inhibition of its alternatives and the consequent relaxation of multifinality constraints. (PsycINFO Database Record (c) 2011 APA, all rights reserved)