Seasonal characteristics of F region in lower solar activity period at Zhongshan Station, Antarctica

Based on data of Digisonde Portable Sounder-4 (DPS-4 ) in 1995 -1997. we have analyzed the seasonal variations of F region at Zhongshan Station (69. 4°S,76. 4°E ). During the summer of Zhongshan Station, F region ionization is mainly controlled by the solar ultraviolet radiation. Similar to the phenomena in mid-latitude area, the value f0F2 is changed with local time. During equinox scasons, soft electron precipitation from the cusp/cleft region seems significant, f0F2 is changed with rnagnetic local time, and shows the magnetic noon phenomenon. In winter. the effect of the solar radiation on the F region is less than that of summer. Instead, F region is affected by particle precipitation from cusp/cleft region as well as polar plasma convection, there fore, the diurnal variation of f0F2 is more complex and shows two peaks. F region occurs all day in summer. and seldom appears at midnight in equinox.In winter, F region shows two minimums, one is at midnight and the other is at afternoon cusp. Further analysis of the F region spread indicates that in winter the aurora oval passes over the Zhongshan Station is at 1100 UT - 1500 UT.

Study on Rear-end Real-time Data Quality Control Method of Regional Automatic Weather Station

[Objective] The aim was to study the rear-end real-time data quality control method of regional automatic weather station. [Method] The basic content and steps of rear-end real-time data quality control of regional automatic weather station were introduced. Each element was treated with systematic quality control procedure. The existence of rear-end real time data of regional meteorological station in Guangxi was expounded. Combining with relevant elements and linear changes, improvement based on traditional quality control method was made. By dint of evaluation and relevant check of element, the quality of temperature and pressure was controlled. [Result] The method was optimized based on traditional quality control method, and it narrowed the effectiveness of real-time data quality control. The quality check of hourly precipitation applied relevant check of hourly minimum temperature, vertical consistency check of radar data, which can effectively improve the accuracy and credibility of hourly precipitation quality control. [Conclusion] The method was on trial for one year in the quality control of real-time data in the regional automatic meteorological station in Guangxi and had gained good outcome.

The Distribution of Audiovisual Content Over the Intemet： Regional Television Stations

In this research project, we analyse the presence of video on the websites of regional television stations in Spain, and study the use of different internet-related audiovisual content viewing and distribution technologies. The current television model is undergoing a deep-rooted change, and its future depends, to a large extent, on its presence in cyberspace. For the purposes of this study, we selected the internet homepages of the 12 regional radio-television stations which together make up the Spanish Federation of Regional Radio and Television Organizations （FORTA）. The aim was to carry out a research project using content analysis techniques.

ON CHEMICAL WEATHERING OF WEATHERING CRUST AT THE GREAT WALL STATION REGION, ANTARCTICA

The chief aim of this study is to investigate the chemical weathering process of the weathering crust in Great Wall Station region of China (in Fildes Peninsula), Antarctica by the method of sedimentology.CW,SW,GW,TW,WE weathering crusts developed on volcanic clastic rock, gray aptitic basalt with tuff or basaltic bedrock. On change of minerals, geochemical behaviors of elements, migration and enrichment regularities of elements, Correlation between element geochemical behaviors, change of weathering potential of rocks in chemical weathering process are studied by us.We can see that the sequence fo weathering strengths of the abovementioned sections, from high to low, should reflected in TW, GW, CW and SWT and basical correspond with that calculated from the enrichment and differentiation indexes.

Analysis on Similarity Characteristics of 4 Heavy Rainstorms of Regional Station near FAST

Based on routine data of MICAPS system and data of regional automatic station,characteristics of similar environmental field for 4 heavy rainstorms of regional station in Luodian County near FAST in summer were analyzed.It was found that 4 heavy rainstorms of regional station had internal similarity:it maintained high-altitude situation of"high in west and low in east"from Lake Baikal to North China;the Western Pacific subtropical high was zonal;ridge line of subtropical high was near 15°N;θse at 850 hPa reached certain index value,showing that air mass had extremely strong warm and humid characteristics.Under common influence of high-altitude trough,low-value system at low layer and weak cold air,heavy rainstorm occurred.

Artistic Space Design of Subway Station Based on Regional Characteristics

On the basis of existing problems in the spatial design of subway station, this paper explored the principles that regional culture involves in the artistic space design of subway station; based on the analysis of three main design sections and site cases-spatial interface, public art and color, the paper also discussed the artistic application and design embodiment of regional culture characteristics reflected in every element of subway station space design, so as to provide a consolidated design example for subway station space design featuring regional characteristics in the future.

QoS-Aware Reference Station Placement for Regional Network RTK

Network RTK (Real-Time Kinematic) is a technology that is based on GPS (Global Positioning System) or more gener-ally on GNSS (Global Navigation Satellite System) measurements to achieve centimeter-level accuracy positioning in real-time. Reference station placement is an important problem in the design and deployment of network RTK systems as it directly affects the quality of the positioning service and the cost of the network RTK systems. This paper identifies a new reference station placement for network RTK, namely QoS-aware regional network RTK reference station placement problem, and proposes an algorithm for the new reference station placement problem. The algorithm can always produce a reference station placement solution that completely covers the region of network RTK.

Engineering Geological Study of Regional Tectonic Stability in the Area of the Longyang Gorge Power Station on the Huanghe (Yellow) River

In the stability study of the regional structures in the area of the Longyang Gorge Hydroelectrical Power Station, a model of the current stress-deformation field of the area was constructed based on analyses of available data of regional surveys and historical earthquakes and field investigations of active faults and ancient earthquakes. This model was examined and verified by physical and mathematical simulation experiments, and quantitative relations and data were obtained.

Discussion on the Assessment Method of Wind Energy Resources by Using Regional Meteorological Data

The exploitation status of wind energy resources was analyzed, and the distribution of wind energy resources and regional meteorological stations were introduced, and then the assessment method of wind energy resources by using data from regional meteorological station was studied taking Huangjin Regional Meteorological Station in Xinning County in Hunan Province for example, besides, corresponding software was compiled. By means of SQL database and program, the method was used simply and easily and had positive meaning for the development of wind energy resources and excavation of wind farm in inland region.

Impression Remolding: On Design of Lijiang Railway Station

This paper takes "impression remolding" as the hint of design concept, analyzes uniqueness and correlation of Lijiang Train Station, and also multiple design techniques of integrating regional cultural elements, such as roofi ng cluster.

2005-2020年亚洲中部干旱区生态站月潜在蒸散量数据集

潜在蒸散表征大气蒸发能力,是衡量区域蒸发能力的重要指标,也是评价气候干旱程度变化、水资源供需平衡、植被耗水量等的关键参数。在收集中亚生态系统监测网络12个生态站和中国生态系统研究网络(CERN)11个位于西北干旱区生态站的气象观测数据基础上,经过数据质量控制与插补,采用Penman-Monteith模型计算潜在蒸散量,生成了2005-2020年亚洲中部干旱区生态站月潜在蒸散量数据集。本数据集时间序列较长、覆盖多种生态系统类型,可作为亚洲中部干旱问题研究的基础数据、模型输入数据、模拟结果验证数据等,也可为该区域水资源的合理开发与利用、生态环境保护等方面研究提供数据支撑。

山西省地震预警区域网的运行与分析

山西省地震预警区域通信网络已运行两年多,通过对网络运行情况、通信链路的运行率、故障原因等进行系统分析,得出网络故障主要包括线路类、供电类、设备类和其他类,其中线路类故障占比最高,达72%,并针对不同的故障给出相应的故障处置措施。采用网络运行监控系统可在第一时间发现故障,有效提高地震预警网络的运行质量,保障地震预警业务系统的可靠稳定运行,提高地震速报预警的时效性。

南宁北站地域文化融合与绿色生态构建研究实践

以南宁北站精品站房为例,介绍其作为贵南高铁重要节点的设计与建设情况。从壮乡文化与交通建筑融合、地域特征与空间环境融合、民族文化与建筑细部结合等方面,阐述南宁北站将地域文化、城市特色以及传统文化元素巧妙融入现代交通枢纽的建筑设计中。通过对体现建筑标志性、突出在地性和展示文化性等方面的研究实践,提出在站房设计中不仅要关注功能性、美观性和舒适性,更需要重视适应地域气候、建构一体化、融合地域文化表达的设计理念和创作方法。

基于站城一体化理念的地铁站环境改造设计策略——以大连地铁蔡大岭站为例

随着城市化进程的推动和站城一体化理念的提出,城市综合体作为一个必然的产物应运而生。一种集交通、购物、休闲及商用等多种城市功能于一体的新型建筑体系开始出现。文章以大连地铁蔡大岭站为研究对象,融入大连城市本身地域文化,对大连蔡大岭地铁站建筑的改造进行站城一体化研究。

基于通信负载站间迁移的配电网与5G基站日前互动运行方法

当前,将5G基站作为灵活性资源参与电网互动的研究多关注于5G基站储能资源的利用,忽视了5G基站通信负载的调节潜力。为此,提出了一种基于通信负载站间迁移的配电网运营商(DNO)与移动网络运营商(MNO)日前互动运行方法。首先,构建了DNO-MNO双层互动运行优化模型,其中,DNO是综合考虑系统网损成本与5G基站激励成本的激励策略,并以系统N-1安全运行准则为约束,以系统总运行成本最低为目标;MNO综合考虑5G基站功耗成本与电网需求响应收益,并以5G基站净运行成本最低为目标制定5G基站功率运行方案。其次,针对下层MNO 5G基站调度模型存在非凸、非线性约束难以解析求解的问题,提出了一种基于可行域迭代的算法以实现对模型的精确求解。再次,提出了基于精英遗传算法的DNO内嵌MNO双层互动模型求解算法。最后,通过算例验证了文中所提方法的有效性和实用性。

不同植被恢复类型下土壤碳含量对光伏组件遮阴的响应

【目的】探究云南石漠化脆弱区光伏场区不同植被恢复类型下,土壤微生物量碳(MBC)、可浸提有机碳(EOC)及总碳(TC)含量对光伏组件遮阴的响应特征,以期为石漠化脆弱区光伏电站退化土地生态恢复中的植被选型优化提供科学依据。【方法】2021年10月,在云南省昆明市东川光伏电站内,选取黄金菊(Euryops pectinatu)和红花檵木(Loropetalum chinense var.rubrum)2种人工建植植被样地,分别在每个样地的光伏板间(IP)、前檐(FP)、后檐(RP)、板下(UP)设置4个平行采样带,并以未受电站建设干扰的场外草地(以黄茅(Heteropogon contortus)为优势物种群落)样地作为对照(CK),测定2种植被恢复类型下光伏场区不同位置的光照强度以及表层(0~20 cm)的土壤温度、土壤碳(TC、MBC、EOC)含量以及土壤理化性质(pH、电导率、含水量),并分析光照强度、土壤温度、土壤碳含量以及土壤理化性质间的相关性。【结果】光伏场区不同位置的光照强度在07:00-19:00差异明显,且光照强度由大到小表现为对照>板间>前檐>后檐>板下,其中对照、后檐及板下位置的光照强度日变化均呈单峰变化,而板间和前檐位置的日变化均呈双峰变化趋势。场外的土壤温度明显高于光伏场区内,光伏场区不同位置的土壤温度差异较小。植被类型和光伏场区不同位置的光照异质性对土壤碳含量均有显著影响。在黄金菊样地,场区不同位置的土壤微生物量碳含量均较对照显著升高,其中前檐位置的土壤微生物量碳含量最高;在红花檵木样地,除了板间位置的土壤微生物量碳含量较对照显著降低外,其他位置均显著升高。2种植被恢复类型下不同位置土壤pH与对照无显著差异,土壤含水量和电导率均显著高于对照。相关性分析结果表明,光照强度与土壤微生物量碳含量和土壤含水量呈显著负相关,与可浸提有机碳含量、电导率、土壤温度呈显著正相关;土壤含水量与土壤可浸提有机碳和总碳含量均呈显著负相关(P<0.05)。【结论】在石漠化脆弱区的光伏场区,光伏组件遮阴与植被恢复均有利于提高土壤微生物量碳含量,但对可浸提有机碳和总碳含量的影响有一定差异,其中黄金菊样地的土壤可浸提有机碳和总碳含量明显高于对照。若短期内想达到较好的恢复效果,应优先选用黄金菊进行植被恢复。

区域轨道交通跨线站配线方案研究

“四网融合”发展背景下,区域轨道交通网络化运营成为重要发展趋势,而跨线站则是实现不同轨道交通线路互联互通的关键节点,因此有必要对跨线站设计进行探究。从优化车站运输组织出发,对跨线站配线方案进行研究,为实际配线布设提供参考。首先,以跨线运营模式为研究对象,根据跨线前后信号制式异同,将跨线分为同信号制式跨线和跨信号制式跨线,分析两种跨线模式列车作业种类及流程,并研究两种模式下行车组织、承载客流形式、应急管理等因素对于车站配线设置的相关需求。之后,结合配线需求,针对同信号制式和跨信号制式跨线站,分别提出了配线布置原则。最后,基于布置原则,在进一步分析两种跨线站列车作业特征基础上,研究并提出适用于不同车站构型、不同客流特征的典型配线设置方法,并进一步考虑运输组织适应性、建筑规模、工程量等因素提出适应不同实际运营场景的建议方案。通过研究,对于同信号制式跨线站,建议以在发车端设单渡线、交叉渡线等配线为主;对于跨信号制式跨线站,结合当前技术条件建议增设到发线,并根据实际需求设置折返线等其他配线。

面向月球科研站资源支持的永久阴影区水冰红外遥感探测方法研究

水冰是支撑国际月球科研站建设和运行所需的重要资源。红外遥感是探测月球水冰的重要手段,但却难以直接用于无阳光直射的永久阴影区。提出了一种基于光照散射强度模型的阴影区光谱信息校正方法,并构建了基于光谱吸收特征的水冰探测方法,实现了对于永久阴影区水冰信号的探测。应用该方法对月球南极沙克尔顿(Shackleton)和诺比利(Nobili)撞击坑进行分析,发现它们内部的永久阴影区存在水冰信号。该研究有望为国际月球研究站的选址和建设提供借鉴。

计及电网辅助服务收益的区域供能站热泵扩展规划方法

针对双碳目标下区域能源系统的减排需求,提出了一种考虑电网辅助服务收益的区域能源站热泵扩展规划方法,支撑将热泵等低碳供能技术集成到现有区域能源系统的设备选型。首先,构造了考虑外部电网调控需求的区域供能站多能耦合模型。在此基础上,提出了计及电网辅助服务收益的双层扩展规划模型,综合考虑能源成本、辅助服务价格、既有储能容量、碳排成本等因素对于规划结果的影响。最后,以某大学校园供能站热泵替代热电联产机组为例,比较分析了上述因素对区域供能站扩展规划结果的影响,验证了所提方法的有效性。

抽水蓄能电站输水管道区域环境振动分析及减振措施

为了探讨抽水蓄能电站输水管道区域环境振动的问题,结合实际工程的环境振动监测资料,采用Midas-GTS软件分析抽水蓄能电站输水管道区域环境在不同工况下的振动影响,并提出合理的减振措施。研究结果表明:库区上游靠近机组的区域环境振动分贝值均大于库区下游,库区下游靠近居民区的环境振动分贝值均大于居民区环境振动标准值,且严重影响居民的正常生活。由于抽水蓄能电站区域环境振源复杂,填充沟措施效果显著,且易施工,对类似的抽水蓄能电站工程具有一定的借鉴意义。