企业参与职业教育校企合作的立法保障研究

职业教育校企合作无论是目前状态的民事关系,还是将来可能被纳入公法的调整范围,都需要法律法规的规范性文件予以指引和强制实施。克服企业不能积极主动建立校企合作关系的弊端,需要设定强制性义务规定及相应的权利规范,以推动企业参与承担职业教育的社会责任。     

受控振动柱体对波浪影响的数值模拟研究

以不可压缩黏性流体的Navier-Stokes方程为控制方程,采用RNG k-ε湍流模型,利用VOF方法追踪运动的自由表面的方法,建立了三维数值波浪与振动柱体相互作用的模型.基于经典绕射理论验证了波浪绕固定柱体传播的数值模型的可靠性,再采用动边界技术赋予柱体振动规律,研究受控振动柱体对波浪传播的影响,并通过控制柱体初始振动相位变化,系统地给出了在柱体振动的不同初始相位下柱体前后波浪变化的规律.     

基于SVD、DCT和RSA加密数字水印算法研究

提出了一种基于SVD、DCT、RSA加密数字水印算法,该方法是将载体文档图像做8＊8块的DCT变换,水印图像进行了Arnold处理,将水印图像嵌入到变换的SVD正定矩阵中,修改中频域频谱系数,同时对文档使用RSA算法进行加密,含有水印的图像经IDCT变换存成嵌入水印的图像。通过提取变换域的SVD,提取数字水印,经过RSA算法加密后解密该文档,在经过猫脸逆变换处理得到数字水印图像,水印图像的提取IDCT实验结果表明,本文算法具有安全性高、鲁棒性强以及嵌入水印较好的视觉隐蔽特性、算法处理速度快等特点。     

乡村居民疫水接触时空规律研究

基于农村居民疫水接触的空间行为及作息时间的地理调查,了解乡村居民的血吸虫病疫水接触时空规律,对43个行政村的疫水接触人数、方式、天数、接触季节和时间段进行调查。农村居民疫水接触方式有种田、捕鱼、游泳、抗洪、挖沙、打藜蒿、放牛、养鸭和洗衣服洗菜一共9种方式,接触方式多、时间长,感染血吸虫病危险性较大。     

基于物联网与3G整合的电子商务应用资金流探析

文章在简要介绍物联网与3G网络的基础上,阐述了物联网与3G整合背景下电子商务资金流所具备的特点,进而论述了此背景下资金流的优化和作用,最后重点分析了整合背景下电子商务资金流的两个应用案例。     

电力系统稳定性研究的方法论思考

文章对电力系统稳定性研究内涵进行了评述，然后从认识论和方法论上加以分析，讨论了认识过程从功角稳定到电压稳定的转变、从线性向非线性的转变、从简单系统到复杂系统的转变、从重视解析方法到重视非解析方法的转变过程，为电力系统稳定性研究提供方法论指导。     

Preparation of a sensor substrate using functionalized mesoporous silica on a gold film for surface plasmon resonance (SPR) spectroscopy

The use of surface plasmon resonance (SPR) spectroscopy has been applied to a wide variety of fields such as biosensors and surface analysis instruments. In general, a SPR substrate is prepared using self-assembled monolayer (SAM) method of organic molecules as receptor for the target on a layer of gold or silver. However, mesoporous inorganic materials such as SBA-15 have benefits as sensor substrate for SPR. Mesoporous silica has a large surface area which receptor molecule can be attached and has a rigid body which has an excellent stability in the extreme condition compared to organic sensing layer. We prepared an organic modified mesoporous silica and successfully immobilized it on a gold surface, in an attempt to use as a substrate for SPR spectroscopy. For the comparison of sensitivity of prepared substrate, Pt²⁺ detection was selected as a model system. Substrate prepared in this study exhibited the capability of selective sensing for Pt²⁺ ions.     

Energy transfer mechanism of GdPO4: RE3+ (RE = Tb, Tm) under VUV-UV excitation

Polycrystal of GdPO₄:RE³⁺ (RE=Tb, Tm) phosphors were prepared by solid-state method. Vacuum ultraviolet excitation and emission spectrum and the energy transfer mechanism between the host and dopants of Tb³⁺ and Tm³⁺ were investigated respectively. The emission of Gd³⁺ at 313 nm was enhanced by the strong absorption of CTS of Tm³⁺ at 180 nm in GdPO₄: Tm. It has also been concluded that the excitation of Gd³⁺ is transferred to Tb³⁺ and then emission peaks of ⁵D_J→⁷F_J of Tb³⁺ were observed.     

Symbol error rate of selection amplify-and-forward relay systems

Cooperative diversity schemes significantly improve the performance of wireless networks by transmitting the same information through several nodes. The amplify-and-forward (AF) relaying method is one of the most attractive cooperative diversity schemes due to its low complexity. Selection AF relaying has recently been proven to achieve the same diversity order as and lower outage probability than all-participate relays. In this letter, we present an asymptotic analysis of the symbol error rates of a selection AF network, and compare it with the conventional all-participate scheme