支持SRP协议的实时调度技术

实时操作系统对多任务资源访问控制提出了较高的要求.资源竞争常会引起优先级翻转问题导致任务阻塞,增加资源等待延迟时间.传统资源访问控制协议可以部分解决此问题,但是存在上下文切换次数高,任务调度效率低等不足.在结合SRP协议的提前阻塞特性和MiniCore实时调度器设计后,分析了协议中任务调度规则,指出了调度器支持SRP协议时效率低下的原因,并引入胜者树结构改进就绪队列,给出了新的任务搜索算法.理论分析与实验结果表明改进的调度器在任务集规模较大时,提高了调度效率,较好的支持了SRP协议.     

GPM Data Application in Analysis of Vertical Structure of Typhoon ‘Mujigae’ Precipitation

The Global Precipitation Measurement(GPM)mission is designed to provide the next generation of global satellite precipitation products.The GPM Microwave Imager (GMI) carried on the Core Observatory adds high\|frequency channels which can detect light rain and snow.The Dual\|Frequency Precipitation Radar (DPR) combining the data of Ku\|band and Ka\|band helps to obtain more information of cloud and precipitation particles.To detect the cloud and precipitation structure in the typhoon,lots of information from both bands such as precipitation distribution,vertical structure,rain top height and structure of stratus cloud and convective cloud of typhoon ‘Mujigae’ occurring in early October 2015 are analyzed,using 1C\|GMI and 2A\|DPR products of GPM.The results show that the Ku\|band of DPR is better at detecting precipitation and bright band.However,Ka\|band has better effects on detecting small particles of the cloud top.The near\|surface precipitation rate centers upon values below 20mm/hr and partly focuses on 20\|60mm/h.The maximum value of near\|surface precipitation rate is 88.68mm/hr.The rain top height centers on values between 5km and 10km,and the maximum value exceeds 15km.The proportion of stratus cloud precipitation in the typhoon reaches 63.4%,but its average rainfall rate per unit area is lower than convective cloud precipitation by 37%.The detecting results of DPR and ground\|based SA\|band radar are very close which proves the reliability of DPR data.     

基于电子病历的三甲精神专科医院管理平台应用

根据精神专科医院的实际情况提出了以电子病历为核心,整合现有资源、统一集成、信息共享,服务患者的医院综合信息管理解决方案.也为未来实现医疗信息的区域共享打下基础.     

针对地质灾害检测的视频传感器覆盖的一种新算法*

在实际地质灾害监测工程中,为了使视频传感器这一有向传感器最大化覆盖,提出了一种全新的资源掠夺算法。该算法将相邻的节点看成树干上的叶片,利用树叶为争夺阳光而具有的特点使节点覆盖具有最大覆盖面积、最小的覆盖重合区域。从区域覆盖角度对算法进行仿真分析,证明了算法的可行性并且相对于传统算法覆盖效果好且高效,在相关应用中将有很大的优势。     

多元分析法在沉淀滴定中的应用

将多元分析法应用于沉淀滴定之中 ,提出固定电位的方法 ,建立了沉淀滴定中各组分浓度与体积之间关系的数学模型 ,对卤素和硫氰酸盐混合体系进行了测定。     

ORACLE的数字化校园建设方案初探

在分析学校数字化校园建设现状的基础上,提出了由一个公共数据中心、统一身份认证系统和统一信息门户系统为主体的数字化校园建设的总体规划,并通过对ORACLE应用服务器部署和管理数字化校园各业务系统进行探讨,实现以单点登录全网漫游、统一信息门户、共享数据资源的数字化校园综合应用系统。     

Building language resources for a Multi-Engine English-Filipino machine translation system

In this paper, we present the building of various language resources for a multi-engine bi-directional English-Filipino Machine Translation (MT) system. Since linguistics information on Philippine languages are available, but as of yet, the focus has been on theoretical linguistics and little is done on the computational aspects of these languages, attempts are reported here on the manual construction of these language resources such as the grammar, lexicon, morphological information, and the corpora which were literally built from almost non-existent digital forms. Due to the inherent difficulties of manual construction, we also discuss our experiments on various technologies for automatic extraction of these resources to handle the intricacies of the Filipino language, designed with the intention of using them for the MT system. To implement the different MT engines and to ensure the improvement of translation quality, other language tools (such as the morphological analyzer and generator, and the part of speech tagger) were developed.     

Closing the digital divide: understanding racial, ethnic, social class, gender and geographic disparities in Internet use among school age children in the United States

The purpose of this study is to explore the dynamics underlying disparities in Internet use among school age children in the US. The analysis found that a broad range of demographic, geographic and economic factors significantly influence Internet use among children. Significantly, the availability of household computing resources and adult Internet users in the household were most important in explaining disparities in use among children. To expand universal Internet access, future public policy should focus on providing support for in-home access; continued support for public access at out-of-home locations such as schools, and providing technical support, training and expertise to school age children.

认真深入做好前期工作确保三峡工程顺利兴建

三峡工程建设,无论是防洪,发电、航运其工程规模极其巨大,而且工程建设地处我国人口密集、经济相对较发达的长江干流上游最下部河段上;为此,工程建设的前期工作更应较全面深入周密细致,充分考虑方方面面的利害得失,正确地反映工程建设的经济效益。在开发性移民方针下,做好水库淹没损失的合理补偿和移民安置,不留后患。长江上游年年发生洪水造成灾害,工程设计应考虑在水库调洪运行中给上游带来的洪涝灾害淹没损失应得到相应的赔偿。执行《水法)对水资源的有偿使用经济收益的分配是一个有待探讨的问题。     

Integrated Water Resources Management in the Republic of Uzbekistan

Abstract

The Uzbek socio-economic structure is characterized by the transition from a centrally-planned to a market-orientated economy, with a shifting from agricultural production to industrial development. However, the agricultural sector continues to play a significant role in a general economy of the country. The major water sector strategy is to decrease the dependence of agricultural production on climate by introducing advanced irrigation techniques and water saving methods to achieve future sustainable socio-economic development and environmental protection. Water management policy should be flexible enough to adapt to new demands. The regulation of consumption through demand management tools, such as appropriate pricing policies, has recently received greater attention in Uzbekistan. The main thesis of this paper is that allocation of water resources cannot be separated from ecological and economic considerations. The establishment of development objectives and the identification of constraints are also discussed. In the coming years, special attention will need to be paid to the control of water pollution and land salinization, water resources conservation, and acknowledging that actions to increase water productivity are as important as finding additional sources of water.