对广东省高校教师工资统发工作的思考

分析了广东省高校教师工资统发过程中存在统发工资与地方保险局扣缴的养老金无法达到一致、统发工资与地方税务局扣缴的个人所得税的起征标准不一致、后勤改革与工资统发尚不配套、人事分配制度改革与统发工资尚不配套等问题 ,提出了解决问题的建议与对策     

Effect of reclamation time and land use on soil properties in Changjiang River Estuary,China

The objective of this study is to analyze soil physical and chemical properties,soil comprehensive functions and impact factors after different years of reclamation.Based on the survey data taken from 216 soil sampling points in the Fengxian Reclamation Area of the Changjiang (Yangtze) River Estuary,China in April 2009 and remotely sensed TM data in 2006,while by virtue of multivariate analysis of variance (MANOVA),geo-statistical analysis (GA),prin-cipal component analysis (PCA) and canonical correspondence analysis (CCA),it was concluded that:1) With the in-crease in reclamation time,soil moisture,soil salinity,soil electric conductivity and soil particle size tended to decline,yet soil organic matter tended to increase.Soil available phosphorous tended to increase in the early reclamation period,yet it tended to decline after about 49 years of reclamation.Soil nitrate nitrogen,soil ammonia nitrogen and pH changed slightly in different reclamation years.Soil physical and chemical properties reached a steady state after about 30 years of reclamation.2) According to the results of PCA analysis,the weighted value (0.97 in total) that represents soil nutrient factors (soil nitrate nitrogen,soil organic matter,soil available phosphorous,soil ammonia nitrogen,pH and soil particle size) were higher than the weighted value (0.48 in total) of soil limiting factors (soil salinity,soil elec-tric conductivity and soil moisture).The higher the F value is,the better the soil quality is.3) Different land use types play different roles in the soil function maturity process,with farmlands providing the best contribution.4) Soil physi-cal and chemical properties in the reclamation area were mainly influenced by reclamation time,and then by land use types.The correlation (0.1905) of the composite index of soil function (F) with reclamation time was greater than that with land use types (-0.1161).     

海量城市空间数据资源汇集模块的设计与实现

研究了OGSA-DAI网格中间件技术,设计了一个基于OGSA-DAI的海量城市空间数据资源汇集模块,实现了城市地理空间信息的共享应用.本模块的创新之处在于扩展了OGSA-DAI的数据资源,实现网格环境下多源异构空间数据的访问与集成,对相关研发工作的开展起到了很好的借鉴作用.     

The glacier area changes in the Qangtang Plateau based on the multi-temporal grid method and its sensitivity to climate change

Glacier area changes in the Qangtang Plateau are analyzed during 1970-2000 using air photos,relevant photogrammetric maps and satellite images based on the multi-temporal grid method.The results indicate that the melting of glaciers accelerated,only a few of glaciers in an advancing state during 1970-2000 in the whole Qangtang Plateau.However,the glaciers seemed still more stable in the study area than in most areas of western China.We estimate that glacier retreat was likely due to air temperature warming during 1970-2000 in the Qangtang Plateau.Furthermore,the functional model of glacier system is applied to study climate sensitivity of glacier area changes,which indicates that glacier lifespan mainly depends on the heating rate,secondly the precipitation,and precipitation increasing can slow down glacier retreat and make glacier lifespan prolonged.     

利用GRACE卫星数据提取苏门答腊地震同震和震后重力变化

基于GRACE重力卫星数据,采用P3M6去相关滤波技术、350 km半径的高斯平滑技术与差分方法,提取2004年苏门答腊Mw9.3地震的同震和震后重力场时空演化过程。该地震断层下盘同震重力变化达到4.6 μGal,上盘同震重力变化最大值为-8.3 μGal,该结果与球体位错理论计算结果在量级和分布形态上具有较好的一致性。震后7 a断层下盘重力变化累计达到5.6 μGal,超过同震变化信号|而断层上盘震后重力变化只有0.6 μGal,仅为同震变化信号的11%。该现象表明,断层下盘所在海洋地层的粘滞性较低,地层相对柔软,其地层在震后由于较大的粘滞性松弛效应而持续变形,并伴随较大的重力变化|而断层上盘所在的地层接近陆地地壳特性,地层相对脆硬,震后受地层的粘滞性响应而导致的重力变化相对较小。     

地质勘查一线紧缺人才数据库支撑平台建设探析

运用B/S（浏览器/服务器）模式和OOAD(面向对象的分析和设计)等信息技术,建设地质勘查一线紧缺人才数据库支撑平台,实现人才数据采集、培养计划和培养目标的管理,以及相关数据查询、统计功能,全面、准确、动态掌握地质勘查一线紧缺人才培养全过程,为搭建地质勘查一线紧缺人才信息服务平台奠定基础,同时为国土资源管理决策工作提供依据。     

车辆路径问题:从时间地理学的视角

车辆路径问题具有典型的时空分布特征,受到众多时空约束条件的制约。在车辆路径规划中,综合考虑时间和空间因素是非常必要的。本文从时间地理学这一全新的视角来研究车辆路径问题,提出一套完整的时间地理学分析框架,阐述了时间地理学的基本概念,提出了车辆路径问题中的时空约束、时空路径、时空棱柱、时空可达性、时空距离等概念,并给出了图示或定量化的度量方法。论文提出的时空距离度量方法综合考虑了顾客在空间位置和时间窗口2个方面的特征,可更科学地判定顾客之间的"邻近性"。论文通过设计一种求解大规模软时间窗车辆路径问题的算法,证明了时空距离的价值,并展望了时间地理学在求解动态车辆路径规划问题、移动设施路径规划问题等方面的应用。本文的贡献在于,通过时间地理学所提供的一系列概念和方法,实现了在统一的框架下同时考虑车辆路径问题(VRP)的时间和空间特征的构想,挖掘了传统时间地理学理论在车辆路径领域中的应用潜力,这将有利于更快或者更好地求解VRP问题。     

栖霞市马家窑金矿床成矿流体地球化学特征

马家窑金矿床是胶东地区比较典型的石英脉型金矿床代表,属中低温热液矿床,成矿流体盐度较低,气相成分以H2O,CO2为主,其次是Na^＋,Ca^＋和Cl^-,K^＋和F^-较贫,流体的成分与大气降水热液相类似。成矿流体的H,O同位素值则反映大气降水在不同温度和不同水／岩值条件下与栖霞超单元回龙夼单元交换后的分布特征,认为马家窑金矿床的成矿热液属大气降水成因。     

Comprehensive tests on rising height of capillary water for coarse grained soil

According to the comprehensive tests on the rising height of capillary water for seven kinds of different coarse grained soil by use of the method of standpipe,the relationship between the rising height of capillary water and time was obtained,and the influencing factors and rules were analyzed.The data of the steady rising height of capillary water were obtained,and the regression equation of coarse grained soil on steady height and physical indexes(effective grain d 10 and porosity n) was found.Compared with Hazen’s and other expressions that could estimate the steady height of capillary water of coarse grained soil,the proposed method is satisfactory and the defects of the latter were pointed out.     

Changes of Biogenic Elements in Phragmites australis and Suaeda salsa from Salt Marshes in Yellow River Delta,China

Little information is available on biogenic elements(carbon, nitrogen, phosphorus and sulfur) and the ecological stoichiometric characteristics of plants in coastal wetlands. To investigate the contents of carbon, nitrogen, phosphorus and sulfur of plants, and their ecological stoichiometric characteristics in the Yellow(Huanghe) River Delta, plant samples were collected from two typical salt marshes(Suaeda salsa and Phragmites australis wetlands) during the period of from August to October in 2007, and the ratios of C/N, C/P, N/P, C/N/P and C/N/P/S were calculated. Results showed that during the studying period, plant C, N and P were lower than the global average values, and plant N and P were lower than the China's average values. Leaf C and S in Suaeda salsa were significantly lower than those in Phragmites australis(P 0.05), and leaf N and P in Suaeda salsa and Phragmites australis showed no significant differences(P 0.05). Average C/N ratios were 23.75 in leaf, 73.36 in stem, 65.67 in root of Suaeda salsa, and 33.77 in leaf, 121.68 in stem, 97.13 in root of Phragmites australis. Average C/N ratios of Suaeda salsa and Phragmites australis were all great than 25, indicating the salt marsh in the Yellow River Delta is an N limitation system. Average C/P ratios were 276.78 in leaf, 709.28 in stem and 1031.32 in root of Suaeda salsa, and 536.94 in leaf, 768.13 in stem and 875.22 in root of Phragmites australis. The average N/P ratios of Suaeda salsa were 12.92 in leaf, 10.77 in stem and 10.91 in root, and the average N/P ratios of Phragmites australis were 16.40 in leaf, 7.40 in stem and 6.92 in root, indicating the Suaeda salsa wetlands were N limited and Phragmites australis wetlands were N limited in August and P limited in October in 2007. The average C/N, C/P and C/N/P ratios in Suaeda salsa and Pragmites australis were higher than the global average values, indicating the lower quality of organic matter provided by wetland plants in the Yellow River delta.