贵州省气候舒适度及旅游潜力分析

基于1981—2010年气候统计资料,通过温湿指数、风效指数和着衣指数首次对贵州省舒适期进行分析,通过各月综合旅游舒适度与旅游资源丰度对贵州省旅游潜力进行系统分析。结果表明:全省气候舒适期长度呈现东北向西南逐渐递增的分布形势;其中中部至西南部地区属于长舒适期类,舒适期为7~9个月,东部和东北部地区的气候舒适期为5~6个月,属于中舒适期类。春、秋季全省各地综合气候舒适度等级好,夏季中部至西部地区综合气候舒适度等级好,南部边缘地区在整个冬季舒适度等级均较好。旅游资源丰度分布上,遵义市旅游资源丰度值最高,主要是珍贵的红色文化旅游资源,而黔西南州旅游资源丰度最低,主要是独特的喀斯特地貌。各地州市在旅游业的发展中应合理利用旅游资源,加强消夏和避寒旅游项目的开发,打造旅游知名品牌,提高旅游产品质量。     

平潭综合实验区综合气候舒适度变化特征研究

文章通过建立综合气候舒适度评价指标,计算综合气候舒适度的年代距平并进行Mann-Kendall突变检验,分析平潭综合实验区51年间综合气候舒适度变化特征.结果表明:年综合气候舒适度、各月综合气候舒适度往"偏凉或凉,部分人感觉不舒适"或"普遍感觉舒适"或"偏热或较热,部分人感觉不舒适"或"热,感觉不舒适"的等级发展.年综合气候舒适度、多数月份综合气候舒适度在20世纪80年代、90年代发生突变,综合气候舒适度在21世纪初较多年平均大大增加.     

贵州清镇人居环境气候舒适度评价分析

人居环境气候舒适度评价具有重要的现实意义。本文选取清镇市1959—2019年气温、湿度、风速、日照等气象资料,利用温湿指数、风效指数、穿衣指数和舒适度指数对清镇市人居环境气候舒适度进行评价分析,结果表明:清镇市4月到10月人体感觉为舒适及以上等级,全年总体感觉为舒适风,冬季人体感觉为凉风;10月到次年的4月着衣保暖为主,其余月份可着短、薄的类似衬衫衣。气候舒适度在较不舒适到较舒适等级,冬季月份为较不舒适的月份,其他月份是舒适月份,四季舒适度均存在波动现象,春季到秋季表征为舒适季节,冬季属于较不舒适季节。气候舒适度模型评价结果较全面反映清镇市人居环境气候舒适度的变化规律特征。     

杭州市近50年气候舒适度变化

目的分析杭州市气候舒适度的多年变化特征。方法运用气候舒适度分析方法,选用国家气象局规定的统一标准,计算分析了杭州市气候舒适度指数的变化情况。结果杭州市50年来平均温度呈上升趋势,平均相对湿度呈下降趋势,平均风速变化不明显。气候舒适度总体呈上升趋势;从不同等级气候舒适度天数变化来看,总体上表现为人体感觉冷不舒服的天数为减少的趋势;而人体感觉热不舒服的天数变化不明显;人体感觉舒服的天数也表现为增加趋势。结论气候变化对杭州的气候舒适度发展总体有利。     

中国热点城市旅游气候舒适度评价

基于温湿指数、风寒指数和着衣指数,构建了一个新的综合气候舒适度评价模型.运用新模型,计算了中国41个热点城市的气候舒适度指数,划分出适宜于旅游的等级和时段,并对气候舒适度的南北变化进行了分析.依据舒适期的年内分布划分出4种舒适度类型:夏适宜型包括哈尔滨等城市,年内气候舒适度呈倒"U"形变化,不舒适期较长;春秋适宜型包括北京等城市,气候舒适度呈"M"形变化;冬适宜型包括广州等城市,气候舒适度呈"U"形变化;四季适宜型只有昆明,气候舒适度呈倒宽"U"形变化.年综合舒适指数在北纬25°左右最高,以北纬25°为界,以北地区随纬度的降低,综合舒适指数逐步增加,以南地区随纬度的降低,综合舒适指数逐步减小.夏季气候舒适度指数随纬度升高而增大,北方旅游具有更高的气候舒适性;冬季气候舒适度随纬度降低而升高,南方旅游具有更高的气候舒适性.     

泛长三角地区近60年的人体舒适度时空特征分析

利用泛长三角地区14个地面气候资料国际交换站1951~2010年近60年的气候统计资料,采用温湿指数(THI)作为因子进行分析,对照分级表得出14站近60年的人体舒适度级别,并以每10年为一个时间段进行人体舒适度区的划分和变迁分析,利用sufer软件绘制每10年的THI克里金插值等值线图。结果表明:泛长三角地区近60年来,极为舒适和极不舒适的月份数量都较少,2级、3级、4级舒适度的月份数量较多,舒适度空间分布不均,东南沿海比西北内陆舒适度较高。     

华东地区气候舒适度精细化估算及其分布特征研究

结合19642013年华东区域常规气象站气象观测资料与数字高程模型DEM(Digital Elevation Model),利用黄金分割舒适度指数计算方法,在GIS平台上对起伏地形下华东区域气候舒适度进行精细化空间估算,并分析其在该区域的时空分布特征,其结果可为区域气候资源开发利用提供参考.结果表明:气候舒适度在空间上其等级分布趋势为由低纬到高纬、由低海拔到高海拔、由近海到内陆而逐渐降低;在时间上春季4、5月和秋季9、10月最为舒适;从各省份来看,气候舒适度等级年内变化差异从大到小依次是山东、江苏、安徽、上海、浙江、江西和福建.气候舒适期为4个月的区域面积最大,总面积30.61万km2.     

河北省夏季旅游气候舒适度评价

利用河北省1980～2017年11市气象观测站逐日平均温度、相对湿度、平均风速和日照时数等观测资料,分别分析了河北省夏季年际、年内温湿指数、风效指数、穿衣指数和旅游气候舒适度的变化规律和11市各指数的分布特征。结果表明:河北省6月温湿指数和风效指数最低,穿衣指数和旅游气候舒适度呈7月最低的规律;夏季最佳旅游时段为夏季第1～25d和第80～92d;河北省6月为夏季最佳旅游月份,北部城市"较舒适"区域普遍多于南部,旅游舒适度普遍优于南部地区。     

基于1987-2016年气象数据的河南省气候舒适度时空变化特征研究

为了解河南省气候舒适度的时空分布特征,以河南省127个县市30年的气象资料为基础,分析各地温湿指数、风效指数和舒适度指数的年际、年内和空间变化特征并评价其舒适状况.结果表明:①3种指数在年际和年内变化都呈现高度一致性,其中温湿指数对判定气候舒适度的变化更敏感,最高等级值达到5级,除冬季外,风效指数和舒适度指数的等级值未超过3级;②河南省北部和西部的气候舒适期开始较晚,结束较早,持续时间短,全省的最佳旅游时段为4—6月和9—10月,其中,5月和9月最舒适;③全省春秋两季气候都很舒适,冬季全省气候舒适度较低,不适宜室外旅行;夏季气候舒适度受高温影响大部分较低,但豫西豫北山地尚可.     

平凉市崆峒山旅游气候及人体舒适度特征分析

利用平凉市7县(区)气象观测站1961 -2010年近50年气象观测资料,分析了平凉市及主要旅游景点崆峒山的气候特征.根据气温、相对湿度、风速等气象要素的日平均值,计算出各县区逐日人体舒适度指数及各舒适度等级所占日数的年分布和历年平均值.利用1986-2010年崆峒山客流量资料,对崆峒山客流量和人体舒适度指数的年内变化进行了相关性分析.结果表明:平凉市气候宜人,冬无严寒,夏无酷暑,全年体感表现为冷感到舒适,适宜人们旅游疗养.7县(区)人体舒适度较高,适宜居住时间近6个月.夏季人体舒适度最高,处于舒适水平;春、秋季人体舒适度基本一致,处于较舒适水平;冬季人体舒适度较低,处于不舒适水平.由于地理位置和海拔高度的不同,7县(区)人体舒适度差异明显,其中舒适度较高的县(区)为崆峒、崇信、泾川、灵台,其次为庄浪、华亭、静宁.崆峒山客流量与人体舒适度指数的年内变化呈显著正相关.     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

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.     

A computer generator for randomly layered structures

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

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to