一个微分差分方程的Darboux变换和显式解

利用规范变换得到了一个微分差分方程的Darboux变换，该方程与一个离散谱问题相联系．作为应用．得到了这个微分差分方程的显式解．     

Generalized exchange and propensity for military service: The moderating effect of prior military exposure

The propensity for military service (PMS) of young Americans is an important issue for our Armed Forces. Since the 1990s, the PMS of young Americans has steadily declined. Overtime, a declining PMS may cause military mission degradation, lowering of military recruitment standards, base closures, and reinstatement of the unpopular military draft system. This paper investigates the moderator effect of prior military service on the Generalized Exchange-PMS relationship. Generalized exchange is when indirect benefits such as preserving freedom and the American way of life accrue to the larger society because of an individual's military service. This paper uses a structural equation modelling approach to analyse the moderating effect of prior military exposure on prospective recruits regarding their PMS. Findings indicate that the group of prospective recruits with prior military exposure had higher levels of PMS than the group without such exposure, that is, the young people with prior military exposure are more likely to enlist in the military than the young Americans with no prior military exposure.     

Exploring Gender Differences on Internalizing and Externalizing Behavior Among Maltreated Youth: Implications for Social Work Action

This purpose of this study was to explore the moderating influence of gender on the relationship between child maltreatment and internalizing symptoms (e.g., affective and somatic problems) and externalizing behavior (e.g., rule breaking behavior and aggression) among children aged 7–12 years old. Using a longitudinal comparison group design and a sample of 300 youth of which 56% (n = 168) had substantiated cases of child maltreatment, results of a structural equation modeling revealed that internalizing symptoms exerted a mediating influence that was conditioned by gender. Only girls’ internalizing symptoms were found to mediate the link between child maltreatment and externalizing behavior while a direct relationship between maltreatment and externalizing behavior was found among boys. These findings provide evidence for gender differences in the pathways between being child maltreatment and maladaptive thoughts, feelings, and behaviors. Thus, adapting evidence-based strategies that target gender specific internalizing behaviors and externalizing behaviors among maltreated youth may significantly reduce the risk of short and long-term maladaptive behavior.     

高阶变系数微分方程的解

文章将高阶变系数线性常微分方程利用变量变换化为常系数线性常微分方程 ,进而得出高阶变系数线性微分方程的通解。     

物质的量（或浓度）对化学平衡影响的讨论

在恒温、恒压的条件下，本文从范特荷夫等温方程出发，导出一计算理想气体反应吉布斯自由能变化馆的公式，利用此公式我们可以更为详尽地讨论恒温、恒压下影响化学平衡的因素；由此公式还可以得出传统的勒·查特勒原理其正确性是有条件的．     

关于广义Fibonacci函数的整数值

设a是正整数，数列满足遍推关系u0＝1，u1＝a，um＋2＝aum1＋um（m≥0），函数本。文证明了：对于任何正整数a，当且仅当X＝0或者X＝u2n-1／u2n（n∈N）时，U（x）是正整数上述结果完整地解决了Brugia、DiPorto和Filipponi提出的一个公开问题     

Marital Conflict and Children’s Adjustment: Evaluation of the Parenting Process Model

This investigation tested whether parenting mediates longitudinal associations between marital conflict and children’s adjustment. Data were drawn from a three‐wave study of 283 families with children aged 8 – 16 years at Wave 1. Relations among marital conflict, parenting (behavioral control, psychological autonomy, and warmth), and children’s adjustment (externalizing and internalizing) were examined. Structural equation models indicated multiple dimensions of parenting mediated relations between marital conflict and children’s adjustment. When including controls for earlier adjustment, behavioral control continued to mediate relations between marital conflict and change in children’s internalizing symptoms over time. These results advance parenting process models for relations between marital conflict and child adjustment and provide impetus for study of other pathways, including direct and child effects.     

几类可积的非线性常微分方程及二维变系数线性微分系统的求解

本文借助文[1]、[4]的重要结论,采用[2]、[3]、[4]的有关技巧和作变量替换的方法,给出了几类可积的非线性常微分方程及二维变系数线性微分系统,并给出了求解的方法及通积分的表达式。     

四通道单交错Millitron慢波结构特性分析

用场论方法分析四通道单交错Ｍｉｌｌｉｔｒｏｎ慢波电路。推导出色散方程和耦合阻抗；通过数值计算，对多通道和单通道电路的色散特性和耦合阻抗进行了比较。     

实用翼片加载螺旋线模型的分析及优化

螺旋线行波管是唯一能够在倍频程以上范围内高功率输出的器件。在本世纪７０年代中发展起来的金属翼片加载技术可以改善螺旋线系统特性，降低相速变化，提高带宽范围，金属翼片加载技术是螺旋线促波系统重点研究的一个方面，文中对此螺旋线翼片加载模型作了一些分析，得到了色散方程、衰减常数和耦合阻抗等公式，并作了数值分析，计算结果与实验结果具有很好的一致性。