基于GPSOne技术的智能手机定位精度及可靠性研究

结合当前国内外对智能手机的研究状况,以及桂林市二调控制点成果资料,系统地探讨智能手机在绝对定位模式下,定位稳定性、合适的定位观测时间、观测值中所含误差的性质等。通过对比研究发现,手机定位中系统误差占有绝对主导地位,认为改正系统误差是提高智能手机定位精度的重要途径。实践证明,基于GPSOne技术的智能手机替代传统的单点定位型手持GPS接收机是完全可行的。     

Small‐area patch‐merging method accounting for both local constraints and the overall area balance

Small‐area patch merging is a common operation in land use data generalization. However, existing research on small‐area patch merging has mainly focused on local compatibility measures, which often lead to area imbalances among land use types from a global perspective. To address the shortcomings of previous studies by resolving local and global concerns simultaneously, this article proposes a merging method that considers both local constraints and the overall area balance. First, a local optimization model that considers three constraints—namely, the areas of neighboring patches, the lengths of shared arcs, and semantic similarity—is established. The areas of small patches are first pre‐allocated. Subsequently, in accordance with an area change threshold for individual land use types, land use types with area changes that exceed this threshold are identified. The patches corresponding to these land use types are subjected to iterative adjustments while considering the overall area balance. Based on their area splitting abilities, the split lines for small‐area patches are determined, and small‐area patches are merged. Finally, actual data from Guangdong Province are used for validation. The experimental results demonstrate that the proposed method is capable of preserving the local compatibility of patches while balancing the overall area associated with each land use type.     

录井校正新方法在东海盆地西湖凹陷的应用

录井检测受井场环境影响较大,主要包括钻井环境与检测环境,钻井环境包括井径、钻时、钻井液排量、是否取心等,检测环境主要是井场自然环境与检测器内部环境。一般情况下检测器内部环境基本一致,而井场自然环境在一定时间内变化不大,故而钻井环境对录井检测的影响较大,钻井环境校正是进行录井解释前的重要工作。常规Tg(全烃含量)校正方法在取心、低异常、多互层等层段使用效果较差,经过分析,将校正方法在取心、钻时、排量、基值方面进行优化,实践验证,新校正方法效果较好,适应了西湖凹陷的地质研究需求。     

Distinct groundwater recharge sources and geochemical evolution of two adjacent sub-basins in the lower Shule River Basin,northwest China

Based on analysis of groundwater hydrogeochemical and isotopic data, this study aims to identify the recharge sources and understand geochemical evolution of groundwater along the downstream section of the Shule River, northwest China, including two sub-basins. Groundwater samples from the Tashi sub-basin show markedly depleted stable isotopes compared to those in the Guazhou sub-basin. This difference suggests that groundwater in the Tashi sub-basin mainly originates from meltwater in the Qilian Mountains, while the groundwater in the Guazhou sub-basin may be recharged by seepage of the Shule River water. During the groundwater flow process in the Tashi sub-basin, minerals within the aquifer material (e.g., halite, calcite, dolomite, gypsum) dissolve in groundwater. Mineral dissolution leads to strongly linear relationships between Na⁺ and Cl^? and between Mg²⁺+ Ca²⁺ and SO₄ ^2??+?HCO₃ ^?, with stoichiometry ratios of approximately 1:1 in both cases. The ion-exchange reaction plays a dominant role in hydrogeochemical evolution of groundwater in the Guazhou sub-basin and causes a good linear relationship between (Mg²⁺+ Ca²⁺)–(SO₄ ^2??+?HCO₃ ^?) and (Na⁺+ K⁺)–Cl^? with a slope of ?0.89 and also results in positive chloroalkaline indices CAI 1 and CAI 2. The scientific results have implications for groundwater management in the downstream section of Shule River. As an important irrigation district in Hexi Corridor, groundwater in the Guazhou sub-basin should be used sustainably and rationally because its recharge source is not as abundant as expected. It is recommended that the surface water should be used efficiently and routinely, while groundwater exploitation should be limited as much as possible.     

双天线干涉实验中的数据处理

主要根据我们实现的相关函数的获取方式，讨论对数据后处理的理解。     

贵州绥阳红果树景区地质遗迹特征及探险、洞穴养生旅游

为了普及绥阳红果树景区旅游科普知识,为其它喀斯特旅游区提供探险、洞穴养生等旅游产品的科普示范,文章通过野外实地考察并结合景区地质背景,阐述了贵州绥阳红果树景区地质遗迹特征,并在此基础上深入研究景区“飞拉达”攀登、SRT（单绳技术）升降、洞穴养生等旅游产品,及其产品开发方式。研究表明,绥阳红果树景区地质遗迹丰富、美观、有特色,具有较高的观赏、旅游及科普价值;开展探险、洞穴养生等旅游产品开发在红果树景区具有较好的可行性,其娱乐性、功能性强,发展潜力较大,绥阳红果树景区的探险、洞穴养生项目可作为其它喀斯特旅游区多元化开发之范本。      

尧都区雾害的分析

尧都区工业、交通业的快速发展和对空气污染治理的滞后，是当地雾El随年增多的主要原因。浓雾遮光挡阳有碍交通运输，有碍大棚农业生产，有碍幼儿正常发育；雾中含有亚硫酸等有毒物质，有害人们身体健康，有害室外农业和有损外露金属材料，属气象灾害。     

北极海域铁锰结核和结壳的分布与成因

对公开发表的有关北极海域铁锰结核和结壳的分布区域、化学成分,矿物类型以及年代学等数据资料进行搜集整理后发现,目前已知的浅水铁锰样品主要分布在喀拉海和楚科奇海域内,而深水铁锰样品主要位于楚科奇海台、加拿大海盆、门捷列夫海岭和阿尔法海岭内。深水铁锰样品主要为水生成因,除Mn外,主要有用金属含量均远高于浅水样品,且多种金属与全球重要结核和结壳成矿带内的样品含量相当,展示出一定的资源潜力。深水铁锰样品生长时间长达1500万a,对应着中新世弗拉姆海峡开启,北冰洋开始与北大西洋进行深水交换时期。浅水铁锰样品主要为成岩成因,周边陆源非金属物质的供给量较大,资源潜力低。     

预算编制执行中存在的问题及对策

1部门预算编制中存在的问题(1)尚未建立科学的标准体系和管理体系。一方面,由于国家、省、市出台的行政事业单位开支标准制度相对滞后,执行中“超标”现象普遍存在,增加了建立科学合理的预算定额标准体系的可操作难度。另一方面,由于资源调查基础数据不够准确、真实,不能正确反