共查询到20条相似文献，搜索用时 93 毫秒
1.
2.
赵雪梅 《常熟理工学院学报》2010,24(2):105-110
AES加密算法具有安全性高,运行速度快,对硬件配置要求低,属于对称算法等优点,非常适合硬件的实现.本文对AES加密算法进行了改进,研究了AES加密算法的C语言实现以及数据流的加密和解密过程,同时对AES加密算法的应用进行了简单介绍. 相似文献
3.
《西安文理学院学报》2020,(1)
提出了一种基于UML的硬件/软件划分算法——DynaPart,DynaPart是一个基于UML序列图的硬件/软件划分算法. DynaPart的设计流程能够降低系统执行时间,同时降低算法的复杂性和时间开销.为了验证所提出的设计流程和DynaPart划分算法的可行性,展示了DES系统的加密和解密算法的实现示例. 相似文献
4.
分析了荧光光纤测温原理,研究了光电检测与信号处理等硬件电路;采用LabVIEW图形化编程语言,将形态小波算法用于荧光信号滤波处理来提高系统的信噪比,提出了对数斜率法与指数拟合法结合的方法检测荧光寿命,保证系统的稳定性;最后结合算法与硬件,完成基于LabVIEW的荧光光纤温度在线监控系统的设计;该系统经过大量的测试数据与实验结果验证,具有良好的稳定性和极高的性价比,并已经在实际环境中获得成功应用. 相似文献
5.
为便于硬件实现,选择了一种块状结构的Block-LDPC码。编码算法采用与Block-LDPC码结构相对应的基于近似下三角矩阵的编码算法,这种算法无须改变矩阵结构,便可实现编码。高速移动下的信道模型是一类频率选择性信道现有的信道仿真模型,为便于硬件仿真采用频率选择性确定性信道模型中的多径瑞利衰落信道仿真模型。实验证明了该模型基本符合当前仿真需求。译码算法采用UMPBP_Based算法,不需要信道估计、复杂度较低,特别适合硬件实现。采用上述算法并通过Matlab编程实现了整个编译码平台的搭建。 相似文献
6.
为了寻求有效的数字媒体保护方法,该文提出了一种在三维小波变换域内基于二值运算的数字视频水印嵌入算法.为了实现水印的获取,提出了一种相应的水印盲提取算法.水印的嵌入与提取算法不仅充分利用了小波变换良好的空时多分辨特性,而且占用内存空间少、时延低,适合视频流的在线水印嵌入和提取,并易于硬件的实时实现. 相似文献
7.
利用TMS320C6713 DSK实现的自适应滤波器 总被引：1，自引：0，他引：1
在对统计特性未知的信号进行噪声消除的应用中经常需要使用自适应噪声对消法.LMS算法是应用最为广泛的自适应算法之一.本文对LMS算法的DSP硬件实现进行了研究,并在TMS320C6713 DSK上实现了基于LMS算法的自适应噪声对消.实验结果表明,LMS算法的计算复杂度很低,且在有确定参考源的情况下采用自适应对消算法能够有效地去除噪声. 相似文献
8.
为了解决卷积层计算复杂度要求高和硬件网络推理的硬件资源有限造成的硬件部署问题,在基于查找表(LUT)的现场可编程门阵列(FPGA)上搭建了使用整数乘法器和加法树的卷积架构.借助Winograd算法实现卷积乘法优化,降低了计算复杂度.进一步优化基于LUT的算子,以构建处理单元(PE).优化存储流以提高内存访问效率并解决带宽限制,降低数据翻转率以减少功耗.试验结果表明,使用Winograd算法构建基本处理单元可以显著减少乘法器数量并实现硬件部署加速,而处理单元的时分复用提高了资源利用率.与传统卷积方法相比,架构对计算资源实现了2.25倍优化,并将峰值吞吐量提升了19.3倍.由此说明,基于LUT的可配置Winograd网络加速器可以有效解决硬件资源有限造成的部署问题. 相似文献
9.
10.
魏晋 《河南职业技术师范学院学报》2014,(2):55-59
恶意代码检测技术的核心算法是特征码匹配检测算法.BM（Boyer-Moore）算法作为一种高效的特征码匹配检测算法,已被广泛应用于Windows平台中.由于Android与Windows平台具有完全不同的硬件和软件,因此在Windows平台中的算法未必适用于Android平台.从BM算法的原理入手,经过代码的改进和编程实现,并通过最终的实验测试,表明BM算法完全可以满足在Android平台中恶意代码检测技术的需求,且具有较高的运行效率和准确率. 相似文献
11.
12.
13.
《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
14.
罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
15.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
16.
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
17.
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
18.
19.
RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
20.
Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献