土壤肥料学实验课程的教学改革与实践

为全面培育卓越农林人才，提高教学培养质量，本研究结合土壤肥料学的课程内容、教学特点及实验方法，对存在的问题进行了剖析，并结合实际针对存在问题做出了相应改革，适时调整《土壤肥料学》实验课程内容和形式。通过删减验证性实验内容，增设综合性实验，传统部分教学内容实现网络化等三方面对该课程的实验课部分进行了改革与实践，以期提高学生综合运用所学《土壤肥料学》的相关知识来解决生产实际问题的能力。     

大学英语教学中中国传统文化渗透路径探究

文化与语言有着密切的联系，一定的文化背景知识有助于促进语言应用能力的提高。大学英语教学的同时也应该是对文化的传授，英语教学不仅是语言知识的教授，更应该是文化知识的传播。从多模态视角出发，探究中国传统文化导入大学英语教学的必要性及途径，有助于提高当代大学生的英语识读能力及文化传播的能力。     

The character and the wave front set correspondence in the stable range

We relate the distribution characters and the wave front sets of unitary representation for real reductive dual pairs of type I in the stable range.     

数学专业师范生教学技能的调查研究--以四川文理学院为例

教学技能是教师最重要的专业素质，是师范生在大学期间需要掌握的基础职业技能。通过调查研究表明，数学专业大学生教学基本功发展不平衡，不同年级学生的教学技能水平存在显著差异。教学实践、课改认知、教学交流、自主练习是影响教学技能的四个主因子。男女生在表达技能、教学设计技能、几何作图技能等方面差异显著，而在教材分析、多媒体使用方面不存在显著性差异。要通过完善教学技能培养机制，夯实师范基础技能培养，改革教学技能培养方式等途径，合力提高师范生的教学技能，增强就业竞争力。     

The behavior of differential forms under purely inseparable extensions

Let F be a field of characteristic 2. In this paper we give a complete computation of the kernel of the homomorphism $H_2^{m+1}(F)?H_2^{m+1}(L)$ induced by scalar extension, where $L/F$ is a purely inseparable extension (of any degree), $H_2^{m+1}(F)$ is the cokernel of the Artin–Schreier operator $?:{\mathrm{\Omega }}_F^m?{\mathrm{\Omega }}_F^m/\mathrm{d}{\mathrm{\Omega }}_F^{m?1}$ given by: $x\frac{\mathrm{d}{x}_1}{x_1}\wedge ?\wedge \frac{\mathrm{d}{x}_m}{x_m}?(x^2?x)\frac{\mathrm{d}{x}_1}{x_1}\wedge ?\wedge \frac{\mathrm{d}{x}_m}{x_m}+\mathrm{d}{\mathrm{\Omega }}_F^{m?1}$, where ${\mathrm{\Omega }}_F^m$ is the space of absolute m-differential forms over F and d is the differential operator. Other related results are included.     

Perturbative manifolds and the Noether generators of nth-order Poisson equations

A manifold that contains small perturbations will induce a perturbed partial differential equation. The partial differential equation that we select is the Poisson equation – in order to explore the interplay between the geometry of the manifold and the perturbations. Specifically, we show how the problem of symmetry determination, for higher-order perturbations, can be elegantly expressed via geometric conditions.     

Two-dimensional vortex sheets for the nonisentropic Euler equations: Nonlinear stability

We show the short-time existence and nonlinear stability of vortex sheets for the nonisentropic compressible Euler equations in two spatial dimensions, based on the weakly linear stability result of Morando and Trebeschi (2008) [20]. The missing normal derivatives are compensated through the equations of the linearized vorticity and entropy when deriving higher-order energy estimates. The proof of the resolution for this nonlinear problem follows from certain a priori tame estimates on the effective linear problem in the usual Sobolev spaces and a suitable Nash–Moser iteration scheme.     

基于WEB的在线答疑系统的设计与实现

根据登录者的身份，基于WWW技术的在线答疑系统设计为三大模块：学生模块、教师模块和系统管理员模块，它们可分别完成提问、回答和版务管理等功能．还探讨了系统主要的实现技术。