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1.
八戒 《现代计算机》2006,(6):116-116
我们知道显卡和内存都需要大量的存储颗粒,这些颗粒从功能上而言,它们都是用于存储临时数据用的,但为什么显存颗粒的速度要远高于内存的,为什么内存不使用速度快的颗粒来制造呢?  相似文献   

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对国家专利NSY-3型宽域智能颗粒分析仪的原理和特性进行了介绍,从颗粒分析仪的硬件组成和软件结构两方面阐述了颗粒分析系统的设计理念。  相似文献   

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黄建东  黄琨 《集成技术》2021,10(4):67-77
EB (Epstein-Barr)病毒普遍性感染人类并引发多种病毒相关性癌症,其中鼻咽癌与 EB 病毒感染相关性最高,并在我国广东等地区发病率极高,是我国重点防治的十大恶性肿瘤之一。截至目前,没有任何一款上市可接种的 EB 病毒防治性疫苗,针对 EB 病毒相关疾病的免疫治疗手段在临床试验中也收效甚微。近年来,纳米颗粒基因改造技术的飞速发展为 EB 病毒的防治带来了新希望。新型功能化纳米颗粒疫苗载体具有高稳定性、高生物兼容性、高安全性及多功能联合等优势,已被各国团队用于EB 病毒预防及治疗的研究中,并取得了一定的进展。该文介绍并评述了国内外研究小组利用功能化外泌体纳米颗粒、类病毒颗粒、铁蛋白自组装纳米颗粒以及一些其他类型的纳米颗粒所开展的 EB 病毒防治疫苗的研究进展,并对功能化纳米颗粒在 EB 病毒疫苗临床转化过程中可能面临的难题和挑战进行了展望。  相似文献   

4.
《电脑自做》2006,(1):85-86
技嘉的这块GeForce6600采用rGDDR2显存。采用8颗编号为HYB18T256161AF-25显存颗粒.单颗颗粒规格16bit/32MB.组成了128bit/256MB显存系统。  相似文献   

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近年来,在工业生产中气力输送应用越来越广泛,随之而来管道磨损、颗粒破碎、能量损耗、颗粒气动效率低的问题变得十分突出。针对上述问题,以90°管道弯头为对象,设计了一种非对称球形弯头,并用CFD-DEM耦合方法研究了这种弯头的颗粒流动和冲蚀特性,通过同四种已有弯头(普通弯头,盲三通,带涡室的弯头,球形弯头)的对比,得出结果表明:非对称球形弯头在兼顾减小弯头冲蚀、气体能量损耗和防颗粒破碎的基础上,大大改善了出口处颗粒散布特性,提高了颗粒在管道中的运输效率。  相似文献   

7.
阴法明 《微处理机》2006,27(4):80-81
对于工业和医学中常见的颗粒图像,提出了一种快速分割粘连颗粒的方法。利用颗粒图像的轮廓特征,找到若干拐点,从拐点中进一步提取出分割点。然后利用分割点的相互距离等因素,为每个分割点找到相匹配的分割点。连接每对分割点即可分开相粘连的颗粒。这种方法快速有效,取得了良好的效果。  相似文献   

8.
在Mg/CO2粉末火箭发动机的研究中,镁颗粒的燃速、颗粒粒径以及颗粒喷注速度是影响金属粉末燃烧特性的主要因素,金属粉末的燃烧特性决定了燃烧室的结构参数.采用RNG k-ε方程和层流有限速率化学反应模型对轴向喷注式圆柱型燃烧室燃烧性能进行了三维定常数值仿真,研究了颗粒粒径及喷注速度对燃烧室中反应特性的影响,旨在为发动机结构尺寸确定提供参考,所建立计算模型与实际参数吻合较好.仿真结果表明:小粒径镁粉燃烧比较充分,颗粒粒径过大导致燃烧效率低下;镁粉燃烧放热峰随喷注速度的增加而向燃烧室后端移动,喷注速度过大则导致燃烧不完全;金属颗粒径向扩散很少,导致燃烧室壁面附近化学反应量较少且温度较低,可以利用来增强热防护能力.  相似文献   

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Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.  相似文献   

18.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

19.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

20.
This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)SM and Team Software Process (TSP){SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.  相似文献   

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