FPGA Based Accelerator for Hardware/Software Co-Simulation

在系统设计中,硬件复杂电路设计的调试与仿真工作对于设计者来说十分困难。为了降低仿真复杂度,加快仿真速度,本文提出利用fPgA加速的思想,实现软硬件协同加速仿真。经过实验,相对于纯软件仿真,利用软硬件协同加速仿真技术,仿真速度提高近30倍,大大缩短了仿真时间。In system deign,debugging for the design becomes increasingly difficult and designers want more efficient and high-performance verification and debugging solutions.As the design becomes larger and more complex,the pure software simulation suffers from the speed problem.In this paper,we present a new debugging methodology:FPGA based accelerator for hardware/software co-simulation.Experimental results show that the performance gain is up to 30 times over the pure software simulation

Direct conversion of methane to formaldehyde and CO on B2O3 catalysts

甲烷作为天然气的主要成分，是非常重要的碳基资源。不过，甲烷分子的化学惰性使得其转化通常需要在高温条件下进行，反应选择性难于控制。如何实现甲烷的高选择性定向转化一直是化学研究中的重要挑战，甚至被誉为化学领域的“圣杯”。化学化工学院王帅教授与华盛顿州立大学王勇教授合作在甲烷选择氧化反应非金属硼基催化剂的研究中取得重要进展，本研究中发现负载型氧化硼催化剂在甲烷直接氧化反应中表现出优异的抗深度氧化能力。本研究工作是在王帅教授和王勇教授的共同指导下完成。2015级博士生田金树（已毕业）、硕士生谈江乔（已毕业）以及醇醚酯清洁生产国家工程实验室张朝霞工程师为共同第一作者，林敬东副教授和万绍隆副教授等参与了部分研究和讨论。【Abstract】Direct oxidation of methane to value-added C1 chemicals (e.g. HCHO and CO) provides a promising way to utilize natural gas sources under relatively mild conditions. Such conversions remain, however, a key selectivity challenge, resulting from the facile formation of undesired fully-oxidized CO2. Here we show that B2O3-based catalysts are selective in the direct conversion of methane to HCHO and CO (~94% selectivity with a HCHO/CO ratio of ~1 at 6% conversion) and highly stable (over 100 hour time-on-stream operation) conducted in a fixed-bed reactor (550 °C, 100 kPa, space velocity 4650 mL gcat−1 h−1 ). Combined catalyst characterization, kinetic studies, and isotopic labeling experiments unveil that molecular O2 bonded to tri-coordinated BO3 centers on B2O3 surfaces acts as a judicious oxidant for methane activation with mitigated CO2 formation, even at high O2/CH4 ratios of the feed. These findings shed light on the great potential of designing innovative catalytic processes for the direct conversion of alkanes to fuels/chemicals.This work was supported by the National Natural Science Foundation of China (No. 21922201, 21872113, 91945301, 21673189, and 91545114) and the Fundamental Research Funds for the Central Universities (No. 20720190036 and 20720160032).研究工作得到了国家自然科学基金（21922201、21872113、91945301、21673189、91545114）和中央高校基本科研业务费专项资金（20720190036、20720160032）的资助与支持

Research on Hardware/Software Co-Design of AVS Video Decoder

AVS视频编码标准是中国第一个具有自主知识产权的数字视频编码技术标准，其编码效率与H.264/AVC相当，是MPEG-2的2~3倍。2006年2月，AVS视频编码标准正式被批准为国家标准，进入了产业化推广阶段。作为AVS视频产业链中最核心的部分，AVS视频编解码芯片的研究与设计对于AVS视频编码标准的推广起着极其重要的作用。据估计，未来十年我国解码芯片的年均需求量将达到4000多万片。因此，研究AVS视频解码器设计意义重大。 目前，软硬件协同设计方案已经逐渐成为了视频编解码器的主流解决方案。软硬件协同设计技术兼顾了软件的灵活性和硬件的高性能等特性，它使得复杂度极高的AVS视频解码器实现变得简...The AVS video coding standard is the first digital video coding standard of China with independent intellectual property rights. It achieves similar performance to H.264/AVC, and about 2 or 3 times than MPEG-2. AVS video standard has been approved as the national standard in February 2006 in China. Now it is on the way of industrialization. In the industrial chain of AVS video coding standard, the...学位：工学硕士院系专业：信息科学与技术学院电子工程系_电路与系统学号：2312008115317

内蒙古灌丛化草原分布特征的遥感辨识

灌丛化草原在中国内蒙古干旱、半干旱草原区广为分布。为了探究灌丛化草原的分布状况,该文利用高空间分辨率(5.8 m)卫星资源三号遥感影像,结合地面调查,研究了内蒙古镶黄旗境内灌丛化草原的分布特征。以归一化植被指数(normalized differential vegetation index,NDVI)阈值法提取植被覆盖区域后,分别采用基于像元的监督分类方法(支持向量机、最大似然和马氏距离)和面向对象方法进行灌草镶嵌斑块和草地斑块的辨识,并对分类结果进行对比分析。结果表明:在3种基于像元光谱信息的监督分类算法中,支持向量机算法对灌丛化草地的识别精度相对较高,表现在这一类型的生产者精度和用户精度均大于另外2种算法,并且,该算法的总体分类精度也最高(81.15%),明显优于最大似然(73.33%)和马氏距离(61.77%)。然而,融入了空间信息进行分类的面向对象方法(合并尺度97)的总体识别精度高达89.24%,并且随着对象合并尺度的增大,灌丛化草地的错分和漏分比例明显降低。这一结果表明利用草本与灌丛像元的空间纹理属性差异,能够有效削弱噪声,提高识别精度

Comparison of Three Extraction and Purification Approaches and Optimization of Two Dimensional Electrophoresis System for Proteins from Sugarcane Leaves

为了优化适用于甘蔗叶片蛋白质的分离纯化方法与双向凝胶电泳体系,比较了3种蛋白质分离纯化方法对甘蔗叶片蛋白质的SDS-PAGE电泳图谱、蛋白质提取率以及双向凝胶电泳的影响,同时优化了双向电泳条件。结果显示,SDS提取法的SDS-PAGE电泳图谱中条带较少,蛋白质沉淀杂质多,效果差;三氯乙酸/丙酮沉淀法蛋白质沉淀得率高,但沉淀复溶性差,蛋白质溶液浓度低,难于满足双向电泳大胶的高上样量要求;酚抽提法蛋白质沉淀得率虽低,但沉淀纯度高、复溶性好,蛋白质溶液浓度高,是适合双向电泳分离纯化甘蔗叶片蛋白质的理想方法。酚抽提法蛋白质双向凝胶电泳合适的胶条p H范围为4~7,17 cm大胶合适的上样量为800μg,平均可分离出954个蛋白点。 Proteins in sugarcane leaves were extracted and purified by using three methods i.e.SDS extraction methods, trichloroacetic acid（TCA）/acetone precipitation and phenol extraction.Their productivity and profiles were assessed by means of SDS-PAGE and two-dimensional electrophoresis.The conditions of two-dimensional electrophoresis were also optimized.The results showed that the result of SDS extraction method was poor because of less bands and impurity in protein precipitation.For TCA/acetone precipitation method, the productivity of protein precipitation was high, but it was difficult to re-resolve the precipitated protein, and the resulted concentration of proteins was too low to match the normal requirement of 2-DE analysis.The phenol extraction method was found to be the best for high purification and high protein concentration.The optimized conditions for two-dimension electrophoresis of phenol extraction method was p H 4～7 for 17 cm dry strip with 800 μg protein loading amount, which produced 954 spots in average.广西自然科学基金项目（2010GXNSFA013101,2011GXNSFF018002）; 广西农科院团队项目（桂农科2011YT01

The Path Selection and Practice of Deepening Cross-strait Sports Exchanges and Cooperation in Xiamen City

运用文献资料法和调查访问法,在调查分析近年来厦门与台湾体育交流合作的现状和存在问题的基础上,提出适合厦门与台湾现状和民情的体育交往方式和沟通渠道的创新性建议来贯彻落实好中央赋予厦门的综合配套改革试验政策,进一步深化两岸体育交流合作,促进两岸经贸往来与和平统一。This paper tries to use the method of literature and questionnaire investigation and others,and puts forward innovative suggestions which meet present situation and custom of physical contact and communication channels between Xiamen and Taiwan in order to implement comprehensive reform pilot policy which central gives to Xiamen on the base of investigating the present situation and the existing problems about sports between Xiamen city and Taiwan.By this way not only will it deepen cross-strait sports exchanges and cooperation,but also will promote cross-strait economic and trade exchanges and peaceful reunification.2012年福建省教育厅社科研究课题《厦门市深化两岸体育交流合作的的路径选择及实践研究》;项目编号:JA12201

石化企业营销管理集成系统的实现

企业网络化信息集成是企业信息化的一个重要内容.本文介绍以石化企业为背景开发的石化企业营销管理集成系统.该系统通过在中国石油锦西石化分公司的应用,提高了企业的综合管理水平和企业竞争力,提高了企业经营决策支持水平,给企业带来了明显的经济效益.该系统将在石化行业具有广泛的推广应用价值