应用新技术搞好黄龙场区块飞仙关组高含硫气藏的开发

随着勘探开发难度的不断加大,为了实现低渗储量的有效动用,提高单井产量的“牛鼻子”工程,提高
高含硫气藏的开发效益,需要采用切实可行的技术来实现。在黄龙场区块飞仙关组高含硫气藏采用水平井技术达
到了非常好的效果,文章将从地质、气藏、钻完井、经济评价、开采效果等方面对该气藏进行详细阐述和分析。     

可配置片上网络性能评估平台

为了弥补目前单纯采用软件或者硬件构建NoC验证平台的一些缺陷,采用软硬件结合的设计方法实现了NoC的FPGA验证与性能评估平台。利用该平台在Xilinx Virtex 6FPGA上对基于虚通道路由器的片上网络进行了验证。实验证明该验证平台功能完善,占用硬件资源少,综合时钟频率高,评估NoC系统的效率非常高。     

基于不同色彩空间融合的快速图像增强算法

针对现有Retinex算法中存在的色彩失真、噪声放大及光晕伪影现象等问题,本文提出了一种基于Retinex理论的改进算法. 该算法首先在HSV空间对亮度分量V通道进行增强处理,同时在拉伸得到的对数域反射分量至一定的动态范围时（本文是0～255）,引入增强调整因子,调整不同亮度值的增强程度来避免噪声放大及色彩失真现象;然后在RGB空间,通过分析光晕产生的原因,提出一种改进的高斯滤波器来消除光晕现象,并在计算反射分量时,通过参数调整图像颜色的保真度. 最后,对上述两种不同颜色空间的处理结果进行加权平均作为算法的最终输出. 实验结果表明,针对不同光照条件下的图像,1）该算法可以明显地改善光晕伪影现象;2）无色彩失真、噪声放大等问题;3）效果和效率优于带色彩恢复的多尺度Retinex算法（Multi-scale retinex with color restoration,MSRCR）及其他对比算法.     

Joint resource allocation for lifetime-aware cooperative multi-carrier DF system

In this paper,we study the problem of optimal resource allocation for lifetime maximization in an orthogonal-frequencydivision multiplexing(OFDM)system with decode-and-forward relay.The goal is to minimize total energy cost of the system by jointly optimizing power allocation,subcarrier pairing and relay selection.We present a heuristic solution that is composed of two parts.The first part is an optimal power allocation approach to allocate power to a subcarrier pair of the source and the relay.The second part is a modified Hungarian algorithm to make subcarrier pairing and relay selection.Evaluations show that the presented scheme outperforms other schemes in the total transmitted data and the network lifetime.     

可视化数学模型及动态演示系统的初步研究与应用

为克服传统数学模型显示不直观的缺陷,采用FORTR AN和VB,VC语言混合编程技术,研制了平面二维可视化数学模型及动态演示系统。该系统能实现计算全过程的可视化,能进行2D,3D图形显示和动态演示。采用该系统,对地形、流态复杂的长江口南北支河段进行了数值模拟。结果表明：该系统界面简洁,操作方便,显示直观,功能强大,大大提高了数学模型解决实际工程问题的效率。     

诺氟沙星明胶磁性微球的研制及表征

利用明胶的生物相容性及经戊二醛处理可使其固化的特性, 以Fe₃O₄作为磁性内核, 以液体石蜡为有机分散介质, 通过反相悬液冷冻凝聚法制备了强磁性的诺氟沙星明胶核壳微球, 用IR、SEM、TEM、UV/Vis等技术对微球进行了性能表征, 结果表明: 微球成球性好, 无粘连, 平均直径为5～10μm, Fe₃O₄的含量为19%, 明胶的含量为74.8%, 微球载药率(w/w)为6.2%, 药物包裹率为61.4%, 5h释放药物为74.4%, 微球具有较好的缓释性.     

智能变电站继电保护通用测试接口

数字化继电保护装置是智能变电站的重要组成部分,有必要提高其检验工作的效率和质量。论文分析了智能变电站数字化继电保护装置的测试流程,设计了一种基于XML的通用测试接口,该接口具备良好的扩展性和适应性,便于软件处理和移植,可在智能变电站继电保护测试过程中发挥重要作用。     

When are two geometric Goppa codes equal?

Sufficient and necessary conditions are obtained for which the geometric Goppa codes C(D,G) and C( D,H) are equal for two divisors G and H . In particular, it is proven that if G and H are two effective divisors of the same degree smaller than n-1, then C(D,G) and C(D,H ) are equal, if and only if G=H     

Improving the phase sensitivity of a Mach–Zehnder interferometer via a nonlinear phase shifter

We propose a scheme to improve the phase sensitivity of a Mach–Zehnder interferometer. In this scheme, a Kerr nonlinear phase shifter is used to replace the traditional linear phase shifter. We consider two detection approaches: the direct homodyne detection (DHD) and the indirect homodyne detection (IHD). We find that the Kerr nonlinear phase shifter can improve the phase sensitivity of the interferometer, and the DHD is better than the IHD. In addition, we also find that the phase sensitivity of the Kerr nonlinear interferometer is robust against photon losses.