多载波基站协作系统下行链路中基于资源预留的用户调度策略

为在满足各用户数据高速传输前提下保证其服务的公平性,必须采用合适的调度策略.传统调度策略片面追求系统中各小区吞吐率的提升,不能根据用户业务差异灵活地调度资源.提出一种基于资源预留的用户调度策略,预留资源服务业务需求高或信道条件差的用户,同时讨论了不同情况下预留资源多少对系统性能的影响.仿真结果表明,与传统的协作调度策略相比,该策略能够以可接受的系统吞吐率降低为代价,大幅度提高系统的用户容量.     

CGSP2.0中域管理服务设计与实现

针对CGSP2.0中网格域的特点,设计和实现了域管理器.它负责CGSP中每一个自治域的管理,功能包括用户管理、组管理、身份映射管理与系统级服务管理四部分.CGSP中域管理器通过用户映射来实现虚拟组织的建立,将虚拟组织的管理与物理组织管理统一起来,简化了网格系统的设计.通过域管理器,CGSP可以支持网格虚拟组织安全、高效的管理与跨域访问.实验表明域管理器能够很好的满足多用户并发的操作请求,多用户查询的平均时间开销不会随着用户数的急剧增加而明显加大,系统保持稳定良好的性能.     

多粒度网格资源预留系统

提出并实现了一种对网格应用所需资源进行预留管理的系统,研究了多种粒度的资源预留,可满足不同应用的资源需求.用户根据应用选择合适的资源预留粒度,以减少资源的浪费,提高资源利用率.为了适应网格应用资源需求的动态变化,该系统允许在运行时动态地调整资源预留的持续时间或预留资源量.性能测试表明:随着干扰程序的规模的增加,在没有资源预留的情况下,干扰程序规模最大时Linpack测试值是没有干扰程序时的0.39%,在使用CPU预留时对应的百分比为103.38%.     

网格环境下空闲计算资源调度的研究

由于基于集群的网格任务调度系统扩展性有限,同时在互联网上存在大量廉价的空闲PC资源得不到有效利用,针对以上情况,提出了一种对集群和空闲PC资源联合调度的体系结构SkyHawk-CSF,它在开源的社区调度框架CSF4的基础上扩展了调度空闲PC资源的空闲资源管理适配器SHIRM Adapter和空闲PC资源管理器SHIPC,并对元调度器作了相应的修改.为了有效地利用空闲PC资源,高可靠地完成用户提交的任务,还提出了在给定的期限条件下容错的调度策略SHDFT.通过对原型系统的评估分析,表明SkyHawk-CSF具有现实的可行性和合理性,并获得了预期的实验结果.     

一个基于CSF4的多集群网格计算平台的设计与实现

设计并实现了一个基于WSRF的网格计算平台, 该系统基 于Globus Toolkit 4, 集成了元调度器CSF4, 本地调度器SGE5.3/6.0, LSF6.0和openPBS2.3 .16以及数据网格系统Gfarm. 在功能上, 该系统可协同本地及远程的资源管理器, 支持WS GRAM和Pre WS GRAM（GT2 Gatekeeper）的协作, 支持完全地委托用户代理证书； 在任 务管理上, 该系统提供了排队服务, 并支持定制调度策略； 另外, 该系统支持LSF, PBS, SGE, Condor等多种资源管理器类型.     

一种基于Nash均衡的网格资源调度算法

运用博弈理论对资源调度算法进行深入研究,提出了能够反映供求关系的基于竞价的网格资源定价机制,并构造了网格资源和用户的效用函数,论证了资源调度中Nash均衡点的存在性和唯一性以及Nash均衡解.仿真实验表明,该资源调度算法与竞价策略能够使整个网格系统得到更高的运行效率,并且使网格用户获得最大的效用.     

网格资源提前预留中用户资源需求量预测模型

针对目前对网格资源提前预留的研究主要集中在资源预留算法上,几乎忽略了如何估算用户资源需求量问题,提出一种适用于网格资源预留的用户资源需求量预测模型.基于对网格资源提前预留请求的定义,结合GM(1,1)灰色预测方法,建立了用户资源需求量预测模型,并提出相应的改进方法,提高了预测精度.模拟实验证明了模型的有效性,能获得较好的预测效果.     

基于网格的校园网构建技术研究

为了解决目前校园网存在的资源浪费问题,把网格技术引入到校园网中管理资源,提高资源的利用率.有效整合校园网的资源,把资源管理系统设计为三层模型,分别为资源层、网格服务层和门户层,并提出如何构建每一层.在资源层中还引入资源管理软件SGE(Sun Grid Engine)对资源进行管理,因为SGE支持计算资源的动态加入,而且有自带的调度策略,能更好地对本地资源进行管理.在网格服务层中引入约束因子的效益驱动资源调度算法来进行资源调度,更好地满足校园用户的需求.     

基于资源监控的网格调度系统

研究ChinaGrid生物信息学网格中,根据资源负载变化进行动态作业调度的方案.针对中国网格公共支撑平台(CGSP)的执行管理模块在调度作业时,没有将计算节点的动态性作为调度优化的考虑因素,在ChinaGrid生物信息学网格中实现了一个基于资源监控的作业调度系统(SSRM).SSRM利用CGSV来实时获取资源的动态信息,并报告给ChinaGrid生物信息学网格的调度模块进行调度方案的优化.实验表明,与资源监控相结合的网格调度系统可以明显地缩短一组作业的完成时间.     

基于计算期望和信誉度的网格资源调度模型

目的 研究网格经济模型下资源调度的问题.方法 分析以往的资源调度策略,提出了一种基于计算期望和资源信誉度相结合的网格资源调度模型.结果 通过用户设定各因素的重要性,由计算期望分析器将各个因素量化,再由调度器根据量化结果,将任务放到相应的队列中,各队列调用不同的调度算法;同时每次任务完成后,用户的满意度又直接影响资源的信誉度.结论 该模型实现了高效灵活的网格资源调度,达到了资源最优分配的目的 .     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.