共查询到19条相似文献，搜索用时 140 毫秒
1.
可持续发展功能分区信息是区域空间规划与管理决策支持的重要依据,具有多维时空特征,采用地理信息可视化技术有利于从空间和时间角度揭示可持续发展功能分区信息中所隐含的规律与发展变化趋势。本研究利用可视化技术、组件式GIS技术和空间数据库引擎,开发了可持续发展功能分区可视化系统框架,包括数据源层、元数据层、软件构件层和功能模块层,实现了可持续发展功能分区信息的综合查询、结果显示与分析、图表可视化和地理可视化功能。在该系统框架基础上,本研究集成了全国1∶100万基础地理数据、分县社会经济统计数据和可持续发展功能分区体系,建立了中国可持续发展功能分区可视化系统,实现了数据信息和功能分区成果的可视化表达、图形和属性的双向查询、查询结果的统计分析、制作统计图表和制作专题地图,为政府部门、科研机构和公众了解和利用可持续发展功能分区信息提供了科学支撑。 相似文献
2.
采用大数据技术实现一个热点区域人员流量的实时监测系统.该系统分析热点区域内每个出入口实时人员流量,挖掘各热点区域驻留人员数量规律,从而科学地安排资源及运营管理.整个处理过程耗时少于15 s,误差小于7.5％.运营结果表明该系统达到了大数据的实时采集、实时分析处理和实时分区控制的可实用目标. 相似文献
3.
文章分别从硬件和软件方面分析了影响计算机系统稳定性的因素,特别是从硬盘的使用角度上对硬盘空间大小的分区比例,操作系统安装盘符的选择及硬盘软硬件维护等方面进行了说明,有效地防御了主分区数据的丢失,确保了系统的稳定性。 相似文献
4.
在城市景观园林设计中,由于绿化斑块聚集,区域复杂,难以实现对遥感信息光谱特征的有效提取,制约城市景观设计科学规划。提出一种基于绿化斑块合并技术的景观格局光谱绿化廊道分区处理技术,首先进行城市绿化景观格局模型构建,分析城市绿化景观生态风景园林设计的现状,设计绿化斑块合并技术,提出绿色景观格局分析的绿化廊道光谱特征提取算法。实现对城市绿化景观格局的光谱绿化廊道的分区处理方法改进。研究结果表明,该方法能有效对城市景观中的绿化廊道进行特征提取和廊道分区,廊道分区的峰值信噪比提高,为城市景观和风景园林建设提供准确的数据依据。 相似文献
5.
本文对使用神经网络模型对中国专利全过档数据CPC分类进行了研究和试验论证.对数据分区、专利特征化、模型训练等多个技术实现环节的要点进行了论述.并对13万未分类中国过档专利数据进行了分类实验,实验结果验证了本方法具备一定的可实用性. 相似文献
6.
随着我国民运航空事业的发展,对航空气象服务的安全、高效等要求不断提高。本文探讨了民航气象数据库管理监控系统的设计研究,提出了具有分区数据管理、分批资料清除、数据归档与恢复等功能的数据管理子系统,以及监控信息获取、数据库调优等功能的监控子系统,希望为民航气象系统的可靠运行提供保障。 相似文献
7.
文章对呼和浩特市某酒店空调系统运行调试中发现的三个问题进行了分析研究,着重探讨了宾馆饭店空调系统设计中普遍存在的系统分区、制冷设备选择和空调热水系统与低温热水网路连接问题,提出并实施了相应的改进方案和技术措施。 相似文献
8.
随着信息时代的发展,数据库的信息容量也在飞速提升。为了解决数据库中越来越多的超大表的使用和维护问题,数据库引入了分区技术。全文介绍了Oracle数据库分区的概念、表分区、索引分区以及分区策略,并结合实例给出了Oracle数据库分区具体应用。 相似文献
9.
介绍了高层建筑热水供暖系统的三种主要形式：热立换器的分区式系统;双水箱的分区式系统和无水箱直连供暖系统,分别介绍了三种系统的特点及适用条件。 相似文献
10.
在ORACLE8的数据库中提供了一些增强的并行处理技术,其中之一就是并行INSERT,UPDATE,DELETE的技术的实施。PMDL的益处之一就是加速了在批量数据改变并且提供了事物处理的灵活性,同时他也简化了DBA的任务,比如：对数据仓库建立临时回滚表及在分区和非分区表之间交换数据等等。 相似文献
11.
提出了一种静态的软硬件任务划分与调度相结合的算法,可以同时获得给定任务集在该类平台上的软硬件任务划分和任务调度方案. 算法的时间复杂度为O(V(E+V)+V2logV+PVlogV). 实验结果表明了该算法的可行性和有效性. 相似文献
12.
合作学习作为一种创新的教学理念,已成为新课改以来最重要的成果之一,但许多体育课堂的合作学习在分组上程式化、机械化,流于形式,当然也谈不上好的成效,而实施合作小组的动态划分会有更好的效果。合作小组的动态划分符合因材施教的原则,充分发挥了学生的主观能动性,在操作上可以以学生水平高低为依据分组,以教学内容特点为依据分组,以男女合理搭配为形式分组。 相似文献
13.
Wicak Ananduta Tomás Pippia Carlos Ocampo-Martinez Joris Sijs Bart De Schutter 《Journal of The Franklin Institute》2019,356(6):3290-3313
A novel partitioning approach for linear switching large-scale systems is presented. We assume that the modes of the switching system are unknown a priori but can be detected. We propose an online partitioning scheme that can partition the system when the mode switches, thus adapting the partition to the mode. Moreover, after the system has been partitioned, we apply a decentralized state-feedback control scheme to stabilize the system. We also apply a dwell time stability scheme to prove that the closed-loop system remains stable even after both the mode and partition changes. The proposed approach is illustrated by means of an automatic generation control problem related to frequency deviation regulation in a large-scale power network. 相似文献
14.
Brett Litten Carolyn Blackett Mark Wigglesworth Nicholas Goddard Peter Fielden 《Biomicrofluidics》2015,9(5)
Droplet microfluidic technology has the potential to significantly reduce reagent use, and therefore, lower costs of assays employed in drug discovery campaigns. In addition to the reduction in costs, this technology can also reduce evaporation and contamination which are often problems seen in miniaturized microtitre plate formats. Despite these advantages, we currently advise caution in the use of these microfluidic approaches as there remains a lack of understanding of the artefacts of the systems such as reagent partitioning from droplet to carrier oil and interaction of the biological reagents with the water-oil interface. Both types of artefact can lead to inaccurate and misleading data. In this paper, we present a study of the partitioning of a number of drug-like molecules in a range of oils and evidence of protein binding at the water-oil interface which results in reduced activity of a cytochrome P450 enzyme. Data presented show that the drug-like molecules partitioned the least into fluorocarbon oils and the interaction of the 1A2 cytochrome at the water-oil interface resulted in a lower or complete absence of enzyme activity. This loss of activity of cytochrome 1A2 could be restored by the use of secondary blocking proteins although changes in the pharmacology of known 1A2 inhibitors were observed. The artefacts described here due to reagents partitioning into the carrier oil or protein binding at the water-oil interface significantly impact the potential use of these microfluidic systems as a means to carry out miniaturized biological assays, and further work is needed to understand the impact and reduction of these phenomena. 相似文献
15.
在对军用软件进行功能测试时,通常采用黑盒测试方法,常用的黑盒测试方法有等价类划分法、边界值分析法、错误猜测法、因果图法和场景法等。在设计测试用例时针对实际军用软件综合应用这几种黑盒测试方法。 相似文献
16.
Adriana Bokuli&#x; Ivana Zec Domagoj Marijan
evi&#x; Sanja Goreta Marija Pogaj &#x;epec Lavinia La Grasta Saboli&#x; 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2021,31(3)
IntroductionEvaluation of thyroid function is often requested and therefore defining paediatric reference intervals (RIs) is of vital importance. Currently, there is a distinct lack of paediatric RIs for thyroid function tests in Croatia. Thus, we established RIs for thyroid stimulating hormone (TSH), total triiodothyronine (TT3), total thyroxine (TT4), free triiodothyronine (FT3) and free thyroxine (FT4) in the Croatian paediatric population.Materials and methodsReference intervals were calculated from 397 apparently healthy children, aged from 2 days to < 19 years. Serum samples were analysed for thyroid function tests on the Abbott Architect i2000. Age- and sex-specific 95% RIs with 90% confidence intervals were established according to Clinical and Laboratory Standards Institute guidelines. To express the magnitude of sex and age variation, standard deviation ratio (SDR) was calculated using two-level nested ANOVA. The criterion for considering partitioning reference values was set to SDR > 0.3.ResultsAll thyroid function tests required age partitioning, confirmed by SDR above 0.3. There was no need for sex partitioning, confirmed by SDR below 0.3. Still, FT3 was partitioned due to visually noticeable sex related difference for the oldest group (12 years to < 19 years).ConclusionThis is the first study to establish RIs for thyroid function tests in the Croatian paediatric population. We propose RIs for widely used Abbott platform, thus giving laboratories method- and population-specific paediatric RIs for thyroid function tests that should improve clinical test interpretation. 相似文献
17.
This paper first discusses the corrections of the errors which Jong and Zobrist made in Ref. (1) and next describes the sign determination suitable forthese topological formulas. The technique for sign determination is based on the node partitioning algorithm which is also presented. 相似文献
18.
An application of the Udwadia-Kalaba dynamic formulation to flexible multibody systems 总被引：1，自引：0，他引：1
For the transient response analysis of a flexible slider-crank mechanism, the coordinate partitioning scheme and the Udwadia-Kalaba formulation are herein compared. The flexibility of the coupler has been modelled by means of a single Timoshenko beam element. The present analytical treatment can be viewed as an extension of the model discussed by Shabana in his textbook. 相似文献
19.
中国水利现代化发展水平综合评价分析 总被引：1，自引：0，他引：1
总结国内外水利现代化评价研究的基础上,分析影响我国水利现代化水平的主要因素,选取水利安全保障、水资源可持续利用、水生态环境保护、水利管理水平为准则层,将城乡供水普及率、堤防工程达标率等11项作为评价指标,建立我国水利现代化评价体系。以2000年发达国家水利发展水平作为目标值,采用静态评价方法对我国2008年31个省（市、区）水利现代化发展水平进行分析评价,研究分析我国东部沿海、中部、东北和西部水利现代化综合发展水平,综合分析显示,与我国国家经济发展的东、中、西部经济发展格局相对应,呈现出东、中、西部明显的地域差异特征。针对各地区不同发展阶段和特点,探索性提出我国水利现代化建设四大区域战略布局与政策建议。 相似文献