初探海南岛城镇体系

本文探讨海南省主岛上城镇体系的产生、组成、序列(等级)及城镇间的引力(影响)等问题。     

四川林农复合经营持续发展对策探讨

分析了四川林农复合经营的主要类型、效益与障碍，并探讨了其持续发展的原则、有利条件与对策．     

OPTIMIZATION IN ORGANIC SYNTHESIS.AN APPROACH TO OBTAINING KINETIC INFORMATION BY SEQUENTIAL RESPONSE SURFACE MODELLING.OUTLINE OF THE PRINCIPLES

A method is presented by which it is possible to estimate the initial rate of chemical reactions when theexperimental conditions are varied according to a response surface design.The method is intended as acomplementary method for analysing data obtained from experiments in synthetic chemistry when theobjective is to optimize the yield of the reaction.Data obtained by simulations have been used to develop the method.From the simulated reactions itis shown that sequential analysis of the chemical yield of the reaction makes it possible to estimate modelswhich describe how the parameters of the response surface of the yield vary over time.The derivativesof these time functions of the response surface parameters can be used to define a rate function whichdescribes how the variations in the experimental conditions influence the rate of the reaction.It is shown how such rate functions can be used to afford reasonable estimates of the initial rates ofthe reaction.The initial reaction rates thus estimated can be used to determine the kinetic order of thereactants and also to provide estimates of the activation energy of the reaction.A thorough discussion of how canonical analysis of the rate function may assist in the elucidation ofreaction mechanisms is given.     

THE CONSTRUCTION OF SIMULTANEOUS OPTIMAL EXPERIMENTAL DESIGNS FOR SEVERAL POLYNOMIALS IN THE CALIBRATION OF ANALYTICAL METHODS

In this paper a criterion is described for the construction of experimental designs for the evaluation ofcalibration models in analytical chemistry.The proposed criterion seeks a compromise between theD-optimal designs for estimating the parameters of different polynomial models.A computer algorithmis presented for a sequential construction of experimental designs using the optimality criterion.Theperformance of the optimality criterion and the computer algorithm is elaborated for the problem ofdiscrimination between a first-to a third-degree polynomial for the calibration of analytical methods.Anexperimental design consisting of replicate measurements at five distinct levels equally spaced over thecalibration range proved a good solution.     

低次趋势面描述云南地势宏观特征的探讨

作为趋势面分析方法的一个试例,本文用海拔高度与局部地势二个参数表征地势特征,将云南省按经纬方格划分为214个区域,讨论了绝对地势和局部地势的宏观特征。     

我国蚕桑丝织业探源

本文根据历史传说、古籍记载、考古发掘,阐述我国蚕丝织业的起源是多中心多源头的,并从蚕、桑生长的适宜生态环境分析,说明黄河中下游及长江下游地区为蚕桑丝织业发源地的合理性.     

A QUANTITATIVE-COMPARATIVE APPROACH TO ANALYSIS OF DISTORTION IN MENTAL MAPS

A quantitative procedure for analyzing and comparing distortion in mental maps is presented. Using a microcomputer and digitizer, and by developing a distortion index, comparisons are made by direct analysis of mental maps. A case study of the mental maps of Israel of high school and university students showed a tendency to generalize shape to simple geometric forms, with foreshortening of north-south lines and exaggeration of east-west distances.     

我国亚热带低山丘陵地区农业结构调整—以江苏省宜兴市南部为例

以宜兴市南部为例,本文采用Weaver组合指数法,分析土地类型结构与农业生产结构的天系,以及土地利用中存在的问题,提出农业生产结构的调整方案,并对我国亚热带低山丘陵地区农业结构调整的若干问题作了讨论。     

防城港市十万大山森林旅游区开发

以区域旅游区位决定模式对防城港市十万大山森林旅游区的区位优劣进行了分析,认为其客源区位有利,交通区位不佳,资源区位在省市尺度上较优,但在全国处于不利地位。同时,依据最新似定的风景资源普查评价的分类分级系统,十万大山旅游区旅游资源可分为2个景系,5个景类,共14个景型,旅游资源丰富。在对旅游资源特征及其评价作了初步探讨的基础上,提出了十万大山森林旅游区进一步开发的对策构想。     

黄海北部长山群岛海洋农牧化分区探讨

本文采用主成分-聚类分析等定量方法,并通过对长山群岛海域的资源、环境、生产条件等的相似性和差异性分析,将其划分为三个海洋农牧化区域,为海水养殖业的合理布局提供科学依据。     

试论城市地貌环境与城市道路系统的关系*——以四川省几个城市为例

本文分析了城市地貌环境对城市道路系统的影响,认为地貌过程不仅影响了城市道路的建设和管理,而且是城市道路系统布局和发展的重要控制因素。以四川省几个城市为例,分析了山地城市、丘陵城市和平原城市道路系统的不同特点。     

GEOMORPHOLOGICAL AND DENDROCHRONOLOGICAL ANALYSES OF A COMPLEX LANDSLIDE IN THE SOUTHERN APENNINES

Complex landslides, capable of reactivation, are typical slope movements in high relief areas. Due to their distribution, size and kinematics, these landforms represent a major hazard, posing a high risk to populations, settlements and infrastructures. This paper integrates geomorphological analyses, instrumental measurements and dendrochronological approaches in assessing a large, reactivated landslide system on the southern piedmont of Monte Sirino (southern Italy). The landslide system is associated with weak geological structures, earthquake activity, and rapid recent incision of the mid-Pleistocene Noce lake deposits. Potential reactivation triggers include a higher regional annual rainfall, one of the highest in southern Italy, and more frequent heavy snowfalls in recent decades. Reactivation of the Sirino landslide system has important implications for the motorway connecting Salerno and Reggio Calabria, which crosses it. The results of our study show that the slide is reactivated with an almost decadal frequency and that major reactivations are correlated to prolonged snowfall, which occurs with increasing frequency in the southern Apennines. The last observation suggests the need for similar studies on the behaviour of other landslide systems in the southern Apennines, performing integrated approaches such as geotechnical and dendrogeomorphological analysis.     

新疆典型流域多卫星积雪遥感监测信息系统的设计与实践

本文介绍了新疆典型流域多卫星积雪遥感监测信息系统的设计与实现。除了系统的构成和主要功能外,也较为详细的介绍了不同类型数据的处理,转换的综合分析的方法。在文章的最后,举例说明了系统的几个应用方面。     

辽宁海洋综合经济区划分的初步探讨

我国是海洋大国，有相当陆域国土面积三分之一的海洋国土。随着海洋资源的开发利用，海洋经济不断发展，海洋经济区逐渐形成。在全国划分经济区时，不应忽视海洋经济区。沿海省区在划分经济区时，更应把海洋列入到省级经济区内。辽宁是我国沿海省区之一，通过对辽宁海洋经济区划分的研究，探讨海洋经济区及其划分的有关理论、实践与方法。     

PRINCIPAL COMPONENT ANALYSIS APPLIED TO THE STUDY OF SUCCESSIVE COMPLEX FORMATION DATA IN CU(II)-ETHANOLAMINE SYSTEMS

Application of principal component analysis to Cu(II)-ethanolamine complex formation data is shown.Determination of the number of complex species is obtained from the rank of the matrix of spectral datausing either Gauss elimination or factorial analysis.Relevant information concerning species distributionversus pH is obtained from the plot of the signficant factors upsurging from the evolution of spectraltitration data.     

A STUDY ON THE APPLICATION OF REGIONAL PARAMETERS IN REMOTE SENSING DIGITAL THEMATIC MAPPING

SustainableroponaldevelopmentisdesignatedasthebasicresearchthemewiAnntheglobalscopeforthe2lstcentury.Therefore,tointensifyappiiedresearchesonspatialinformationoftheglobeisofvitalscientificandeconohacsignficancetoresourcesanalysisandmanageTnent,environmentaldapamicmonitoringanddeve1opmotpledng.RemotesensingisaconCenratedrePresentahonofthecomplexofthenatureandinrportaninformationsourceforgeo-sdenceresearchaswell.Hence,itisnotonlypossibletoprofoundlyrevealthedramaticchangesofnaturallawsinmpaphi…     

“8.25”曲靖突发局地大暴雨的中尺度系统特征分析和数值模拟

“8.25”曲靖突发性局地大暴雨,在近30年来8月强降雨中是罕见的。采用Barnes带通滤波方法分离出中尺度天气系统表明,500hPa上的中尺度低压扰动系统和700hPa上的中尺度低涡是产生这次暴雨天气过程的直接的天气系统。在潜在不稳定条件下,由于中尺度系统的扰动,局地水汽强烈辐合,造成了此次强降水。同时中尺度数值模式MM5结果很好地模拟了这次局地暴雨过程的落区、雨强以及发生和发展。强降水发生时有强的上升运动与深厚饱和气柱互耦结构是富源、马龙大暴雨产生的重要动力机制。师宗站上升运动主要出现在对流层中高层,降雨量与上述两站相比要小得多。深对流气柱内云团发展的微物理结构显示,造成富源大暴雨的强对流云不是只含有云水和雨水的暖云云体,在对流层高层有含有雪和冰的混合相云体。马龙暴雨的强对流云团的微物理结构上在对流层中低层与富源云团性质一样,同属暖云云体,但云水合比和雨水混合比均比富源云团小,在对流层高层马龙云团为仅含有雪的单一云体。师宗云团与上述两站均不同,雨水混合比在3者之中最小,产生强降水的主要是对流层高层含有雪和冰的混合相云体。     

1989～2013年中国地理信息系统研究综述——基于CSCD的计量分析

以中国科学引文数据库（CSCD）为数据源,采用文献计量分析方法,对1989 ～2013年发表的11 189篇地理信息系统（GIS）领域的研究论文进行统计,分别从发文年度、作者、机构、期刊、     

基于GAM模型分析夏秋季南奥克尼群岛南极磷虾渔场时空分布及与环境因子之间的关系

基于中国南极磷虾渔业科学观察员收集的数据,利用广义可加模型（GAM）,对2009—2010渔季和2010—2011渔季夏秋季南奥克尼群岛周边水域南极磷虾渔场时空分布及其与表温和海况之间的关系进行了研究。结果表明,GAM模型对单位捕捞努力量渔获量（CPUE）总偏差解释率为41.78%,其中贡献最大的为月份,贡献率为15.53%;奥克尼群岛水域CPUE分布模式均有明显的月份差异。1月份平均CPUE值最低,而4月份平均CPUE值最高,各月份平均CPUE存在显著性差异。渔场主要集中在60°12′—60°30′S,45°30′—47°30′W。南极磷虾作业渔场的适宜海水表温范围为0.1—1.8℃,最适表温范围为0.5—1.5℃。各海况等级间及不同渔船的平均CPUE均存在显著性差异。逐步GAM模型分析结果表明,影响CPUE的因子按重要性从大到小依次为月份、渔船、经度、海表温度、纬度和海况。