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《科技通报》2017,(10)
针对在网络制造资源共享中客户端对资源无法有效、快速访问的问题进行应用研究,提出基于预测的网络制造资源访问策略,解决网络延迟问题。首先,描述了在客户端如何进行局部Cache设计,然后描述了在传统替换算法的基础上,如何引入基于多项式回归的预取技术,如何将预取技术与语义缓存技术相结合。通过构建对用户查询频率进行实时监测和基于多项式回归预取技术的预测模型,实现动态在线预测,避免了用户兴趣漂移引起的预取不确定性,较好地解决了访问延迟问题。最后,设计相关实验对客户端访问资源的有效性、快速性进行验证。实验结果表明,该优化调度策略在命中率上相对于传统的替换算法大约提高了8%,在一定的缓存空间内较传统替换算法在性能上有一定的提高,提高了客户端访问资源的有效性、快速性。 相似文献
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云计算数据预取算法设计是实现云平台环境下通信链路优化和任务调度均衡分配的基础技术。在传统的云计算据查询模式下,当由于缓存空间不足而导致新的缓存数据无法进入缓存时,导致数据预取拥堵,性能不好。提出一种基于Monte Carlo熵权决策的云计算数据预取算法,构建云计算数据查询模板模型,进行Hybrid缓存置换数据预取前置处理,采用Monte Carlo熵权决策方法,把云计算预取信号从缓存域变换到波束域,构建置换函数,实现了对算法的改进。仿真实验研究得出,该算法通过熵权特征提取,进行云计算数据预取决策,提高了云计算数据预取性能,大数据访问延迟率降低,云计算数据存取和调度效率提高,保真率较好。 相似文献
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硬件实现的H.264视频编码器中,合理规划SRAM以暂存Mv及参考区域像素,提前预测下一编码宏块参考区域位置并预取像素数据,协调不同帧间预测模块对数据的存取并为之快速提供数据,能有效提高编码器运行速度。 相似文献
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本文针对工程预结算审核工作的问题,提出了提高预结算编制人员的业务素质,提高项目施工人员素质,加强投标报价及合同内容的签订,加强设计阶段的管理力度等措施,有效提高了工程预结算水平。 相似文献
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本文结合多少年来的工作经验运用机械产品失效的分析思路和基本方法,重点对一些典型的机械产品热锻模具失效分析进行了探索,正确建立机械产品失效分析思路是提高失效分析的准确性和可靠性的十分有效方法。 相似文献
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介绍了一种利用橡胶波纹套和骨架油封组成了复合钻井泵中心拉杆装置,可有效解决原有密封装置结构易失效的问题.新装置结构简单、成本低廉、工作可靠,克服了动态密封容易出现的失效问题,提高了钻井泵工作的可靠性,同时也有效预防了机油失效、浪费和环境污染. 相似文献
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本文主要对预拌混凝土生产企业试验室的管理要求进行分析,提出提高预拌混凝土生产企业试验室管理水平的有效措施,以加强对预拌混凝土生产企业质量的管理,保障预拌混凝土生产顺利开展,提高预拌混凝土生产的工作效率,从而实现预拌混凝土生产企业的经济效益最大化。 相似文献
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该保留站根据超标量处理器中寄存器重命名的原理,将从数据寄存器或ALU单元送来的数据临时存储在保留站的数据位,当两个数据位的数据都准备好时,则发射存储在保留站中的指令给ALU单元进行运算。文章的设计中,增加了从ALU单元接受数据的结构,使保留站可以判断数据的来源,以及是否使用ALU单元送来的数据。当ALU单元运算完成时,数据可以在下一个时钟周期前送至对应的保留站。与从重排序缓存（ROB）中读取数据相比较,这将减少保留站获取数据的时间。 相似文献
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首先对入侵检测系统的相关技术进行了深入地讨论和分析,并系统阐述了常见网络攻击手段和防范措施,对入侵防御系统的现状和发展方向论述,并详细叙述了入侵防御系统总体设计方案。形成了一种入侵防御系统的预取模型。通过实验分析,该系统能针对不同种类攻击而对系统实现多方位的信息安全保护,很大程度上提高了受保护网络系统的安全性。 相似文献
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学科领域期刊科研数据发表政策剖析——以美国化学学会期刊为例 总被引：1，自引：1，他引：0
【目的】剖析化学学科领域科学期刊的数据发表政策,了解期刊数据政策的现状。【方法】 以ACS期刊为例,以期刊投稿指南为数据源,梳理和比较分析ACS期刊对发表论文的数据内容、数据格式、数据共享的要求。【结果】ACS的47种期刊要求论文作者将数据作为支撑信息提交,对于包含序列数据、结构数据、电子显微镜数据、微阵列数据、转基因生物和突变体五类特定类型数据的论文要求将该数据存储到推荐的数据仓储中,涉及五类数据的期刊总共有20种。【结论】可作为化学领域科研人员在ACS上发表论文的参考依据,为国内学术期刊数据政策的实施提供借鉴。 相似文献
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随着数字信号处理器(DSP)的迅速发展,面向DSP设计可重定目标的C编译器成为必然。由GCC编译器移植面向媒体处理器的C编译器,利用指令模板匹配不能有效的生成并行指令。本文结合32位具有RISC-DSP结构的媒体处理器MD32特有的体系结构特点,提出C编译器支持的．在汇编级通过指令调度和调整指令操作数及其类型的代码优化方法,实现输出高效的并行指令．同时提高了代码的运行效率和代码的密度。统计数据表明：代码执行效率平均可以提高14％．而代码密度平均提高11．75％。这种方法比树模式匹配方法更容易实现,并适用于支持并行指令的其他DSP处理器。 相似文献
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近年来,学生自主式教学以及交际式教学在第二语言教学的课堂上得到广泛的关注和应用。本文结合中国的语言学习环境,探讨如何将二者结合起来应用于课堂。 相似文献
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《The Journal of High Technology Management Research》2023,34(2):100465
Businesses have begun using IT apps for a variety of reasons in recent years. The rapid advancement of new technologies has opened up vast prospects for businesses to digitise their operations, enhance their use of information systems, and compete more effectively in the global marketplace. Information technology (IT) businesses can benefit greatly from Big Data analytics due to the depth and breadth of their data analysis. Big data can be used to examine IT departments in the following ways: performance analysis, forecast maintenance, security analysis, and resource analysis. When it comes to boosting their business's dependability, speed, quality, and effectiveness, most companies rely on big data. Companies can gain a competitive edge thanks to the massive amounts of data that big data is able to collect, store, and manage. Big data analytics is being used by a growing number of businesses to make sense of their mountain of data. In this paper, we examine the ways in which IBM, TCS, and Cognizant use big data within their operations. Long-term planning strategies and business intelligence practises are also suggested in this research as means of protecting personal information. 相似文献
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《International Journal of Information Management》2017,37(6):611-621
As CAD models continue to become more critical information sources in the product’s lifecycle, it is necessary to develop efficient mechanisms to store, retrieve, and manage larger volumes of increasingly complex data. Because of their unique characteristics, 3D annotations can be used to embed design and manufacturing information directly into a CAD model, which makes models effective vehicles to describe aspects of the geometry or provide additional information that can be connected to a particular geometric element. However, access to this information is often limited, difficult, and even unavailable to external applications. As model complexity and volume of information continue to increase, new and more powerful methods to interrogate these annotations are needed.In this paper, we demonstrate how 3D annotations can be effectively structured and integrated into a Product Lifecycle Management (PLM) system to provide a cohesive view of product-related information in a design environment. We present a strategy to organize and manage annotation information which is stored internally in a CAD model, and make it fully available through the PLM. Our method involves a dual representation of 3D annotations with enhanced data structures that provides shared and easy access to the information. We describe the architecture of a system which includes a software component for the CAD environment and a module that integrates with the PLM server. We validate our approach through a software prototype that uses a parametric modeling application and two commercial PLM packages with distinct data models. 相似文献
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《Information processing & management》2023,60(3):103273
The domain about what it means to give responsible and human centric recommendations in the context of Artificial Intelligence (AI)-based insurance has not yet been fully explored. In this article, we therefore, first provide an in-depth analysis and perform a systematic literature review on (i) the specifications and requirements for such systems from a regulation point of view, (ii) instructions on which data they can rely upon, (iii) which recommender techniques can be used for developing such an advisor, (iv) off-the-shelf components for the trustworthy, responsible, and ethical behavior of this AI-empowered tool. Then, we present a novel approach, based on AI, to suggest insurance coverage for users and families, as well as instructions on how to design such a system. The solution, as proposed in our paper, will be transparent, trustworthy, and responsible to the final users and thus, hopefully, better accepted by customers. After describing a possible system design and architecture, we critically discuss the challenges and opportunities for the deployment of such systems in insurance companies. 相似文献
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The inability to touch products is a fundamental shortcoming in online shopping because humans typically use the sense of touch to evaluate the utilitarian product functionality and to obtain hedonic sensory enjoyment, which the instrumental and autotelic need for touch capture. This study of 900 consumers looks at the interplay between need for touch and imagination to study how imagination compensates for the lack of touch when consumers shop in a 360-virtual store. The study finds that while telepresence of a 360-virtual store improves consumer attitudes toward virtual shopping, the need for hedonic sensory enjoyment – autotelic need for touch – significantly reduces this effect. Further, imagination can compensate for the need for touch; yet this finding holds only for the instrumental need for touch, not for the autotelic need for touch. Consequently, we conclude that imagination can compensate for the utilitarian need to touch products in a 360-virtual store. 相似文献
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知识经济环境下的图书馆服务创新 总被引：2，自引：0，他引：2
知识经济环境下，信息的载体形式、存储方式、传播方式都发生了巨大变化，用户对信息的需求也不断变化与提高，图书馆传统的服务模式已不能满足这种需要。必须进行服务创新。本文论述了图书馆应面对挑战，抓住机遇，突破创新，建立新的服务理念、服务体系、服务模式，以及服务创新的具体措施。 相似文献