IDC设备分权分域认证管理的实现方法

随着IDC集约化运营的实施,加强IDC设备的精准管理成为需要尽快解决的问题。基于此,笔者首先分析了TACACS+技术的实现原理及ISE系统,进而按照设备命令分级操作、操作记录按时查看、用户端口开通按月稽核的管控原则,对IDC设备操作有效管理进行了探讨,旨在推动IDC操作管理由粗放型管理向精细化管理转变,达到减少随意操作和违规操作的目的。

网格环境下资源管理模型的研究

网格是构筑在互联网基础之上的新兴分布式计算技术。它通过整合分布在各地的资源,为动态变化的虚拟组织的成员提供更为广泛的资源共享,最终目标是实现网络虚拟环境上的资源共享和协同工作,消除资源孤岛。而资源管理是一件非常复杂和具有挑战性的工作,资源管理的好坏、效率的高低直接关系到计算网格系统的性能。本论文在比较现有网格资源管理模型的基础上,特别提出了新的模型—分域资源管理模型,并对其进行了可行性分析。

基于用户画像与关联规则的全域电力资源调度算法

为解决应用调度算法进行全域电力资源调度,资源剩余率依旧较高的问题,提出结合用户画像与关联规则的新型调度算法,实现全域电力资源的合理分配。运用双聚类算法,对整个调度区域内所有用户用电数据进行分析,构建电力用户画像从而描述用户用电个性化需求;以用户画像为基础,建立以满足用户需求为核心的全域资源分配模式;总结全域内资源调度子任务,计算不同子任务之间的支持度和置信度,结合关联规则实现子任务的分组;根据子任务组进行资源分域,在每个分域中设置二级调度中心,再与全域一级调度中心相连接,实现全域资源集中调度。实验结果表明,所提调度算法应用后,电力测试系统每日的全域资源剩余率出现了大幅降低,仅保持在12%左右。该算法具有较好的实际应用价值。

检察院与监所监察室的监控联网系统研究与设计

通过对监所监察室与检察院的监控联网的系统设计,实现了两者之间监控联网系统的详细部署:包括图像采集部署、派驻监察室的管理平台部署和检察院远程指挥中心部署.监控联网系统的功能设计包括:平台统一联网、图像统一编码、图像统一存储、可视化指挥调度、双网保护隔离和用户权限管理等方面的设计.检察院与监所派驻监察室的监控联网系统大大提高了检察院与派驻监察室的工作效率和监察服务水平.

多校区校园安全统一视频监控平台的设计与实现

随着高等教育规模不断扩大和管理体制改革逐步推进,很多高校(包括职业院校)都在进行多校区办学,校园安全管理工作面临严峻挑战。按照"统一规划、分步实施、分类授权、全业务应用"的原则,通过统一平台设计、监控网络设计、监控点位设计和部署调试,实践了多校区校园安全统一视频监控平台的一整套方案,有效实现了视频资源的统一监控、分级控制、分域管理,提升了多校区校园处理突发事件的能力和全面监管工作水平。

接入网OLT设备切片实验及应用

目前,如何提高接入网设备利用率、降低投资建设成本是各大电信运营商亟需解决的问题。所提供的接入网OLT设备切片方案可在降低接入网设备建设成本的同时实现接入网分权分域管理,独立业务发放与运维管理。详细探讨了接入网OLT设备切片技术在接入网建设中的具体应用,以供参考。

Space-time Relationship Between Urban Municipal District Adjustment and Built-up Area Expansion in China

Municipal district adjustment and built-up area expansion are two main forms of urban spatial expansion. Using geometric methods, this study constructed a space-time path method to characterize the space-time relationship between municipal district adjustment and built-up area expansion, and drew the space-time path sets of major prefecture level cities from 2000 to 2010 by constructing a coordinate system of the standardized built-up areas and municipal district areas. This divided them into four quadrants, namely, H-H, L-H, L-L, and H-L, based on the relative mean value to evaluate overall and individual stability by three indexes of the trajectory vectors, namely, direction, length, and slope. Results provide the following conclusions. 1) Municipal district adjustment is an effective spatial expansion way for city-scale promotion in China. Since 2000, municipal district adjustments have been mainly distributed in the eastern coastal regions and mid-western capital cities along with their surrounding cities. 2) Municipal district adjustment affects the scale and status of a city in China. Many cities that have expanded municipal districts behave stably and cross quadrants. 3) Great majority second-tier cities have effectively promoted their scale and status through municipal district adjustment. The municipal district adjustment of medium and small cities in the mid-west area is relatively advanced compared with city development. 4) Municipal district adjustment with minimal magnitude is severely restricted from upgrading the scale and status of a city. The transformation from entirely incorporated counties or cities to municipal districts should be the mainstream in future municipal district adjustment.

Investigation and analysis of hazardous waste in the Three Gorges Area of Chongqing region

This article describes the investigation of hazardous waste (HW) in the Three Gorges Area of Chongqing region, which indicates that by May 2002, the dumped HW therein amounted to 14 600 t and was mainly distributed in five districts and counties with 11 000 t in Fuling, 1 650 t in Fengdu, 950 t in Wanzhou; 630 t in Wushan and 430 t in Yunyang. The total amount was composed of 9 670 t chromic residue, 2 310 t waste oil and residue, 410 t waste (false) fertilizer, 28 t waste chemical medicine, 26 t waste materials and 2 200 t other things including acid residue, waste asbestos, fluorine silicate, pigment, additive, waste acid, alkali, nitric acid, vitriol, lead mud, storage battery, calcium carbide, potassium cyanide, polluted soil, discard dynamite, waste packing barrel of cyanides, etc. In all of the HW, 578 t can be treated by chemical neutralization and stabilization technology such as redox, chemical precipitation, acid and alkali neutralization, etc., and the rest is temporarily untreatble and should be removed and piled at a temporary storage site above the 177 m water level of the dam with an aim to be transported to a future disposal site for innocuous treatment.

Assessment of temporal and spatial variations in surface water quality using multivariate statistical techniques: A case study of Nenjiang River basin, China

Assessment of temporal and spatial variations in surface water quality is important to evaluate the health of a watershed and make necessary management decisions to control current and future pollution of receiving water bodies. In this work, surface water quality data for 12 physical and chemical parameters collected from 10 sampling sites in the Nenjiang River basin during the years(2012-2013) were analyzed. The results show that river water quality has significant temporal and spatial variations. Hierarchical cluster analysis(HCA) grouped 12 months into three periods(LF, MF and HF) and classified 10 monitoring sites into three regions(LP, MP and HP) based on the similarity of water quality characteristics. The principle component analysis(PCA)/factor analysis(FA) was used to recognize the factors or origins responsible for temporal and spatial water quality variations. Temporal and spatial PCA/FA revealed that the Nenjiang River water chemistry was strongly affected by rock/water interaction, hydrologic processes and anthropogenic activities. This work demonstrates that the application of HCA and PCA/FA has achieved meaningful classification based on temporal and spatial criteria.

探析高校校园网络安全

数字校园是当前高校信息化建设的主题,当前高校网络系统是一个庞大复杂的系统,在支撑高校业务运营、发展的同时,信息系统面临的信息安全威胁也在不断增长,被发现的脆弱性或弱点越来越多,信息安全风险日益突出,成为高校面临的重要的、急需解决的问题之一。

Driving Mechanism of Gross Primary Production Changes and Implications for Grassland Management on the Tibetan Plateau

The contribution of climatic change and anthropogenic activities to vegetation productivity are not fully understood.In this study,we determined potential climate-driven gross primary production(GPPp)using a process-based terrestrial ecosystem model,and actual gross primary production(GPPa)using MODIS Approach in alpine grasslands on the Tibetan Plateau from 2000 to 2015.The GPPa was influenced by both climatic change and anthropogenic activities.Gross primary production caused by anthropogenic activities(GPPh)was calculated as the difference between GPPp and GPPa.Approximately 75.63%and 24.37%of the area percentages of GPPa showed increasing and decreasing trends,respectively.Climatic change and anthropogenic activities were dominant factors responsible for approximately 42.90%and 32.72%of the increasing area percentage of GPPa,respectively.In contrast,climatic change and anthropogenic activities were responsible for approximately 16.88%and 7.49%of the decreasing area percentages of GPPa,respectively.The absolute values of the change trends of GPPp and GPPh of meadows were greater than those of steppes.The GPPp change values were greater than those of GPPh at all elevations,whereas both GPPp and GPPh showed decreasing trends when elevations were greater than or equal to 5000 m,4600 m and 4800 m in meadows,steppes and all grasslands,respectively.Climatic change had stronger effects on the GPPa changes when elevations were lower than 5000 m,4600 m and 4800 m in meadows,steppes and all grasslands,respectively.In contrast,anthropogenic activities had stronger effects on the GPPa changes when elevations were greater than or equal to 5000 m,4600 m and 4800 m in meadows,steppes and all grasslands,respectively.Therefore,the causes of actual gross primary production changes varied with elevations,regions and grassland types,and grassland classification management should be considered on the Tibetan Plateau.