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二维条码PDF417编码原理及其软件实现 总被引:1,自引:1,他引:1
介绍了二维条码PDF417的编码原理,给出了在文本压缩模式下编码的程序流程图,并且用Visual Basic语言完成了其编码打印软件,经实验验证所编程序可以准确无误地实现PDF417条码的编码和打印. 相似文献
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目的 研究在观察时间受限制的条件下,条形图和圆环图在映射数据占总体比值关系时的优势。方法 实验设计了3种尺寸(占屏幕7.5%,15%,22%)和3种映射取值(1,1/2,1/3)的条形图和圆环图,被测对象对图形映射的数据占比进行判断,以获得2种形态的判断时间均值和错误率均值。实验使用计算机化实验生成系统E-prime收集数据,使用SPSS进行数据统计和分析。结果 映射取值为1、1/2、1/3条件下,条形图的3种尺寸判断时间均值均低于圆环图;条形图判断错误率均值为2.51%,低于圆环图的错误率4.03%;2种图的映射取值越小,判断的速度越慢。结论 条形图的映射判断速度和准确性比圆环图更具有优势,更适合应用于时空受限制的场景,有助于数据可视化设计时减少因数据堆集而导致的信息过载。 相似文献
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As one of the most valuable assets in China, traditional medicine has a long history and contains pieces of knowledge. The diagnosis and treatment of Traditional Chinese Medicine (TCM) has benefited from the natural language processing technology. This paper proposes a knowledge-based syndrome reasoning method in computerassisted diagnosis. This method is based on the established knowledge graph of TCM and this paper introduces the reinforcement learning algorithm to mine the hidden relationship among the entities and obtain the reasoning path. According to this reasoning path, we could infer the path from the symptoms to the syndrome and get all possibilities via the relationship between symptoms and causes. Moreover, this study applies the Term Frequency-Inverse Document Frequency (TF-IDF) idea to the computer-assisteddiagnosis of TCM for the score of syndrome calculation. Finally, combined with symptoms, syndrome, and causes, the disease could be confirmed comprehensively byvoting, and the experiment shows that the system can help doctors and families to diseasediagnosis effectively. 相似文献
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高温烟尘陶瓷纤维过滤技术特性及其应用评述 总被引:1,自引:0,他引:1
在综述国外用于高温烟尘净化的几种主要陶瓷纤维滤料和高温陶瓷过滤器结构性能及其发展现状基础上,提出了比表面积大、净化效率高、过滤阻力低、初始投资低和运行较可靠的蜂窝覆膜陶瓷过滤器的选型择优建议;通过对陶瓷过滤器的应用评述,并结合我国对节能减排的客观需要,说明了在我国尽快发展用于高温烟尘净化的陶瓷纤维过滤技术的必要性。 相似文献
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本文在总结云南省组织机构代码数据应用现状基础上,提出构建组织机构代码数据应用接口标准体系,用标准规范组织机构代码数据的应用。 相似文献
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分析了二维码的防伪原理,提出了在可变数据印刷中应用二维码进行防伪的方案,在完成基于可变数据印刷的二维码的生成和识别实验的基础上,设计实验比较得出了不同二维码(PDF417码与QR码)的防伪特性的差异。理论分析及实验结果表明,利用二维码对可变数据印刷进行防伪的方案是可行的,并且不同二维码的防伪特性存在差异,在实际应用中可以根据具体的要求选用不同的二维码。 相似文献
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Nasir Mahmood Yaser Hafeez Khalid Iqbal Shariq Hussain Muhammad Aqib Muhammad Jamal Oh-Young Song 《计算机、材料和连续体(英文)》2021,69(1):873-893
Despite advances in technological complexity and efforts, software repository maintenance requires reusing the data to reduce the effort and complexity. However, increasing ambiguity, irrelevance, and bugs while extracting similar data during software development generate a large amount of data from those data that reside in repositories. Thus, there is a need for a repository mining technique for relevant and bug-free data prediction. This paper proposes a fault prediction approach using a data-mining technique to find good predictors for high-quality software. To predict errors in mining data, the Apriori algorithm was used to discover association rules by fixing confidence at more than 40% and support at least 30%. The pruning strategy was adopted based on evaluation measures. Next, the rules were extracted from three projects of different domains; the extracted rules were then combined to obtain the most popular rules based on the evaluation measure values. To evaluate the proposed approach, we conducted an experimental study to compare the proposed rules with existing ones using four different industrial projects. The evaluation showed that the results of our proposal are promising. Practitioners and developers can utilize these rules for defect prediction during early software development. 相似文献
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In hot rolling, the final thickness of the strip is achieved through plastic deformation of the original stock by a series of counter-rotating rollers. In this work, static recrystallization kinetics in between two stages of steel rolling has been modelled, and simulation studies have also been performed to find out the effect of entry temperature on the recrystallization kinetics. A viable bond graph model has been developed to study the kinetics of the process. Low-carbon steel has been considered for this purpose. 相似文献
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目的针对目前包装产业存在的产业链长、数据大而散、包装领域知识不全面等问题,设计一个中国包装产业大数据知识图谱应用系统。方法从行业高度定义涵盖包装领域全生态的分类体系,结合人工智能中知识图谱的最新技术,对政府信息、工商信息、行业信息、学术论文、全球包装专利等互联网上各类数据进行自动采集汇聚,抽取出知识信息,融合成一个涵盖资讯、政策、会议、标准、论文、专利、企业、产品、高校、机构和专家等十几类信息的包装知识图谱知识库。结果系统主要功能包括数据采集、知识图谱和终端应用,实现了包装产业大数据的图谱探索、产业链图、数据报告和关联搜索。结论该系统使用方便,可从多视图、多维度获取包装产业相关数据,提升行业的数字化和信息化水平,加速中国包装行业的智能化产业升级,促进包装产业逐步向智能、绿色、集约、创新方向发展。 相似文献
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根据当前高层综合系统不跨越控制边界进行代码移动的特点,提出了临界路径的概念,将行为规范与RTL实现的操作流图分解成模型检查工具可以接受的验证目标。为了便于自动验证高层综合过程,给出了验证自动机模型。实验结果表明,应用该方法.可简化状态空间,得到更高的验证效率,并保证规范与RTL实现的一致性。 相似文献
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图论在解决运筹学、网络理论、控制论等领域问题中显示出很大的优越性,将图论方法应用于印刷工程项目管理中,特别是印刷工程项目的优化,解决了印刷企业生产工艺的网络绘图及计算问题,采用拓扑排序,求解了最短工期及工程网络的关键路线问题,有效提高了印刷生产效率.较之传统方法,具有明显的优势并有助于加快印刷企业中计算机辅助工程管理的进程. 相似文献
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在分析采用Freeman链码进行形状描述的基础上,提出了两种链码空间分布特征的提取算法:链码分布矢量及链码相关矢量,同时对这两种方法的尺度、旋转、平移不变性进行了分析和验证;针对两种算法,分别设计了有效的相似性度量策略;最后结合链码直方图进行图像检索.由于该方法在进行图像检索时既考虑了链码的统计特征又包含了其空间分布特性,因此取得了比传统方法更好的检索效果,试验结果也证明了该算法的有效性. 相似文献
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根据 256×256 光纤位移传感器的工作原理和数字编码技术建立了位移测量和处理的数学模型;并在光斑直径小于5毫米的情况下,提出了光斑同时照射几根光纤的处理办法。概述了以 8098 微控制器为主体的数据采集处理装置;从测试系统的可靠性、可维护性和可扩展性出发,重点论述了该设计中的自诊断技术、通用性设计、软件陷井等。为了在小型测控系统中显示图形和字符等,采用了点阵 LCD 显示器;文中概述了它的硬件控制原理、程序总体结构和模块,通过它在二维光纤位移传感器中应用实例阐明其作为小型测控系统“人机界面”的广泛应用前景。 相似文献
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In the sorting system of the production line, the object movement, fixed angle
of view, light intensity and other reasons lead to obscure blurred images. It results in bar
code recognition rate being low and real time being poor. Aiming at the above problems,
a progressive bar code compressed recognition algorithm is proposed. First, assuming
that the source image is not tilted, use the direct recognition method to quickly identify
the compressed source image. Failure indicates that the compression ratio is improper or
the image is skewed. Then, the source image is enhanced to identify the source image
directly. Finally, the inclination of the compressed image is detected by the barcode
region recognition method and the source image is corrected to locate the barcode
information in the barcode region recognition image. The results of multitype image
experiments show that the proposed method is improved by 5+ times computational
efficiency compared with the former methods, and can recognize fuzzy images better. 相似文献