摘要：The main purpose to develop a map Graphic Workstation on thewidely used micro-computer is that by it the whole processing of map data fromcapturing,managing,editing,updating to graphic outputting can be *** Digitization System（MDS）is the software system to deal with the initial andalso the most important *** this paper,the authors introduce a MDSon a micro-computer based map Grphic Workstation that has been qualitified forthe producation of digital *** the system is designed totally independentlyand in the general frame of the map Graphic Workstation,the capturing and man-aging and other processings for map data are in an integral manner,in which theproducation of digital map can be fulfilled *** the same time,thesystem is flexible for function extension and widely applicable to the data from dif-ferent sources and with different information characterisitcs(e.g.,the processingof Chinese characters on map).

摘要：In recent years, the chaos based cryptographic algorithms have suggested some new and efficient ways to develop secure image encryption techniques, but the drawbacks of small key space and weak security in one-dimensional chaotic cryptosystems are obvious. In this paper, permutation and sub- stitution methods are incorporated to present a stronger image encryption algorithm. Spatial chaotic maps are used to realize the position permutation, and to confuse the relationship between the ci- pher-image and the plain-image. The experimental results demonstrate that the suggested encryption scheme of image has the advantages of large key space and high security; moreover, the distribution of grey values of the encrypted image has a random-like behavior.

摘要：MINI—map/EPA的研究与实现是我们受国家高技术自动化领域CIMS支持的项目,本文论述了我们所做的工作,如网络物理层、链路层和综合应用层的设计与实现,还提出了适用于CSMA/CD和TOKEN BUS两种机制的网络适配器.

摘要：经过预处理后的稀土生产废水,其氨氮浓度大幅降低,但并未达到中华人民共和国《稀土工业污染物排放标准》(GB26451-2011)中氨氮浓度限值。实验通过响应面分析法中的Box-Behnken实验设计(BBD),取pH、n(Mg)∶n(N)、n(P)∶n(N)3因素,采用Design-Expert 8.0.6,建立合适的剩余氨氮浓度及剩余总磷浓度模型,得到回归方程,并分析模型各项指标,各因素及其相互作用对剩余氨氮浓度及剩余总磷浓度的影响。利用预测模型预测最佳实验条件,在最佳实验条件下验证预测结果,并对沉淀物进行X射线衍射(XRD)分析。结果显示,二次响应模型适用于剩余氨氮浓度及剩余总磷浓度,2个模型均拥有较好的拟合程度、可信度及精密度,最优反应条件为:pH=9.88、n(Mg)∶n(N)=1.50∶1、n(P)∶n(N)=1.38∶1时,剩余氨氮浓度为46.58 mg/L,剩余总磷浓度为7.85 mg/L。在最优条件下所得到的沉淀物并非纯净的MgNH4PO4·6H2O,还有Mg3(PO4)2·22H2O生成。

摘要：针对ＭＡＰ／ＴＯＰ底层技术的研究课题提出了ＭＡＰ／ＴＯＰ通信子网的体系结构，ＭＡＰ网络物理层的设计以及ＴＯＰ网络宽带化的设计思想，为给我国建立低成本ＣＩＭＳ网络打下理论基础，并提供一个切实可行的实用网络模型．

摘要：本文以Autodesk map为平台,利用ObjectARX二次开发工具,结合MFC来实现点符号库的制作。在点符号设计中,运用了图库集中管理模式,用户图形库、标准图形库及其临时图形库;编程中运用了把点图形直接转化为块等方法,具有速度快的特点;并给出了点符号库制作系统实现的程序流程。该方案在数字化成图系统开发中,取得了较好的效果。

摘要：本文重点讨论了宽带map通信子网物理层的设计与实现,其中包括16MHz AM/PSK信号调制器、156MHz AM/PSK信号解调器和头端重调制器,提出了一些较为新颖的设计思想和实现方法。

摘要：依据陕西省旅游资源调查、分类与评价项目获取的数据,采用原型法和面向对象相结合的系统设计方法,建立了面向旅游管理部门和广大游客的西安旅游信息系统.系统中关于旅游数据的采集管理、空间信息检索、电子地图控制、辅助决策、景点虚拟展示、旅游信息动态发布等功能,为旅游管理部门实现科学管理提供了可靠依据,也为游客方便快捷地展现了西安地区旅游资源信息.

摘要：将DPIK点火模型和单步燃烧模型集成在K IVA-3V中,构建汽油机map研究的多维模型。对汽油机工作过程进行数值模拟,并以动力性、经济性和指示功为控制条件,结合试验数据对点火提前角和喷油脉宽进行优化。研究表明:用多维模型模拟的方法生成的map可以作为电喷汽油机的初始map。

摘要：Low-dimensional representation is a convenient method of obtaining a synthetic view of complex datasets and has been used in various domains for a long time. When the representation is related to words in a document, this kind of representation is also called a semantic map. The two most popular methods are self-organizing maps and generative topographic mapping. The second approach is statistically well-founded but far less computationally efficient than the first. On the other hand, a drawback of self-organizing maps is that they do not project all points, but only map nodes. This paper presents a method of obtaining the projections for all data points complementary to the self-organizing map nodes. The idea is to project points so that their initial distances to some cluster centers are as conserved as possible. The method is tested on an oil flow dataset and then applied to a large protein sequence dataset described by keywords. It has been integrated into an interactive data browser for biological databases.