Spatial distribution rules and affecting factors of BIF in Anshan-Benxi area

A detailed investigation on 3D spatial distribution rules of Banded Iron-bearing Formation(BIF) with methods of gravity-magnetic inversion and 3D modeling of iron mine is presented based on the former analysis in the Anshan-Benxi area.Three dimension spatial distribution types of BIF are concluded as hook-like,tabularlike and "W"-like.BIF was mainly developed in three types of space including(1) the syncline cores,(2)cover coverage area,and(3) the deeper buried area where the range of tectonic uplift is small.The influences of tectonism,magmatic intrusion and uplift-erosion on the spatial distribution shapes of BIF are clarified.     

Friends in High Places

Abstract

“Friends in High Places” is a group activity designed to integrate geography with other social studies disciplines such as government, political science, American history, and world issues. It is necessary to consider geography when shaping foreign policy because the formulation of foreign policy requires of its very nature reaching out from our borders like a worldwide network of nerve fibers. As chief diplomat, the President conducts foreign affairs including 1) the initiation of foreign policy, 2) the recognition of new foreign governments, and 3) the making of treaties.     

China's Urban Transition

Abstract

Urbanization in China is proceeding rapidly in step with population growth and a structural shift in employment from farming to industrial, commercial, and service jobs. Two additional causal factors drive the recent rapid urbanization. First, policies related to migration and household registration have been relaxed to allow more farmers to move to cities as transient workers. Second, economic reforms have resulted in new rules and regulations that promote foreign investment and trade activities in coastal areas. The results are seen in the emergence of four extended metropolitan regions in coastal areas (Shanghai-Nanjing, Beijing-Tianjin-Tangshan, Canton-Hong Kong, and Dalian-Shenyang). These metro regions have markedly different demographic, employment, migration, and foreign investment patterns from other parts of China. Such patterns presage the likely future form of China's urbanization as the country enters a period of accelerated urbanization.     

规模经济、对外贸易与区域双核结构模式探讨——以山东半岛济南—青岛双核结构为例

区域双核结构模式是一种重要的经济地理现象。基于新经济地理学的研究视角和分析框架,论文构建模型,分析了规模经济和对外贸易推动区域双核结构模式的生成过程和经济机理。模型研究表明,规模经济和对外贸易是塑造区域双核结构模式的基本力量:规模经济的增强放大了本地市场效应,导致了区域核心城市的出现;对外贸易影响着沿海地区的经济地理优势,决定着港口区位核心城市和内陆地区核心城市的并存。山东半岛济南—青岛双核结构模式生成过程的实证研究也表明,双核结构模式是制造业活动完成由以手工业为主导向现代化大生产为主导转变、区域发展环境完成由相对封闭向相对开放转变之后才产生的经济地理现象。     

Dynamics of Saturn's magnetodisk near Titan's orbit: Comparison of Cassini magnetometer observations from real and virtual Titan flybys

We analyze the variability of the ambient magnetospheric field along Titan's orbit at 20.3 Saturn radii. However, while our preceding study (Simon et al., 2010) focused on Cassini magnetometer observations from the 62 Titan flybys (TA-T62) between October 2004 and October 2009, the present work discusses magnetic field data that were collected near Titan's orbit when the moon was far away. In analogy to the observations during TA-T62, the magnetospheric fields detected during these 79 “virtual” Titan flybys are strongly affected by the presence of Saturn's bowl-shaped and highly dynamic magnetodisk current sheet. We therefore provide a systematic classification of the magnetic field observations as magnetodisk current sheet or lobe-type scenarios. Among the 141 (62 real+79 virtual) crossings of Titan's orbit between July 2004 and December 2009, only 17 encounters (9 real+8 virtual) took place within quiet, magnetodisk lobe-type fields. During another 50 encounters (21 real+29 virtual), rapid transitions between current sheet and lobe fields were observed around the moon's orbital plane. Most of the encounters (54=22 real+32 virtual) occurred when Titan's orbit was embedded in highly distorted current sheet fields, thereby invalidating the frequently applied idealized picture of Titan interacting with a homogeneous and stationary magnetospheric background field. The locations of real and virtual Titan flybys are correlated to each other. Each of the 62 real Titan flybys possesses at least one virtual counterpart that occurred shortly before or after the real encounter and at nearly the same orbital position. A systematic comparison between Cassini magnetometer observations from the real Titan flybys and their virtual companions suggests that there is no clear evidence of Titan exerting a significant level of control on the vertical oscillatory motion of the magnetodisk near its orbit.     

Transformation in territorial concepts: from nation building to concessions

The transition to globalization, socio-cultural fragmentation and an era of peace all constrain Zionism to a restructuring in its territorial perspectives. In the nation-building era, Zionism made the territory the focus of Zionist activity, which necessitated seizing territory, controlling it, and creating an affinity and attachment and a bond of identity between the nation and the territory. Pure colonization as a central strategy for realizing these national goals originated mainly from the unique historical circumstances of Zionism and from the adoption of an ethno-national ideology. This also led to the Palestinian-Jewish conflict that concentrated on the control of territory. The national economy regime that influenced Israel in different ways also served the territorial ideology to a great degree. Peace borders will require Israel to cooperate closely with Jordan, Palestine, Syria and Lebanon in managing resources, external influences and additional common interests. The peace economy will integrate with the multi-national economy. Furthermore, in the reality of peace, Israel will have to abandon the internal colonization of areas populated by Israeli Arab citizens and give greater legitimation to their more prominent inclusion the Israeli identity. It will also become difficult for any elite group to dictate the national agenda to other marginal groups, such as Israeli Arabs, and Sephardic or Orthodox Jews, each group creates for itself considerable degree of autonomy in its own territory. In the main, the national periphery divides into an Israeli Arab periphery beside the periphery of the traditionally religious Sephardic Jews. The ultra-Orthodox Jews take control of increasingly larger Israeli space and expanding the horizons of their public involvement beyond their traditional ghettos. Each group creates for itself a different symbolic space with differing views concerning the limits of Israeli sovereignty.     

新矿物——铊明矾

铊明矾 (lanmuchangite ,TlAl[SO4]2 ·12H2 O)是在贵州滥木厂铊 (汞 )矿床富铊矿体氧化带中发现的一种铊的硫酸盐新矿物。该矿物为产于氧化带的次生矿物 ,其共生矿物为水绿矾、镁铝矾、钾明矾、黄钾铁矾、石膏、自然硫、砷华及某些未知矿物。其矿物集合体大小一般为 2～ 10mm ,集合体多为致密块状 ,单晶呈他形粒状 ,4 0～ 90 μm ,偶见平行柱状集合体 ,半自形至自形柱状晶体 ,直径 15～ 65 μm。白色至淡黄色 ,玻璃光泽 ,透明 ,易溶于水。偏光显微镜下无色 ,均质体 ,实测折光率为 1.4 95。维氏硬度为 94～ 12 4kg/mm2 ,摩氏硬度为 3 .1～ 3 .4 ,实测密度 2 .2 2 g/cm3。平均化学成分 :Tl2 O =3 3 .2 5 % ,Al2 O3=8.0 7% ,SO3=2 5 .19% ,SiO2=0 .10 % ,K2 O =0 .3 5 % ,CaO =0 .0 8% ,MgO =0 .0 6% ,FeO =0 .0 4 % ,H2 O =3 3 .4 6% ,总和 10 0 .60 % ,除结晶水由热重分析 (TG)求得 ( 3件样品平均 )外 ,其余成分均由电子探针分析 ( 6点平均 )求得。化学式为(Tl1.0 0 K0 .0 5) 1.0 5(Al1.0 1Si0 .0 2 Ca0 .0 1Mg0 .0 1Fe0 .0 1) 1.0 6 [SO4]2 .0 2 ·11.86H2 O ,理论式为TlAl[SO4]2 ·12H2 O。X射线粉末衍射主要强线 [d(I,hkl) ]为 :0 .4 3 14 ( 10 0 ,2 2 0 ) ,0 .2 80 1( 70 ,3 3 1) ,0 .70 3 ( 5 4 ,1     

改革开放以来广东省利用外资的时空差异特征

本文阐述了改革开放以来广东省利用外资的时空差异特征，结合国际内国政治经济形势将广东省利用外资的过程划分为５个阶段，并分析各阶段的主要特点，借助于定量分析方法考察外资在广东的地域分布特征及其形成原因，研究表明，改革开放以来广东省利用外资的不稳定增长过程和明显地域差异是省内各区投资环境的地域差异和国家外资政策综合作用的结果。最后，对广东省的经济发展和利用外资工作提出了建议。     

Double Material Segment as the Model of Irregular Bodies

We propose a new, simple model to describe the gravity field of irregular, nonspherical celestial bodies, like small moons or minor asteroids. The simple idea of Duboshin to use a material straight segment for such bodies is extended by combining two perpendicular segments of different lengths and masses. In typical situations, when the longest axis of the body coincides with one segment, the remaining segment must have an imaginary length. The potential remains a real function even if one segment is imaginary. The new model is confronted with the exact form of an ellipsoid's potential and with two alternative simple models for a two-axial and a three-axial ellipsoid.     

在华外商投资R＆D中心建设与中国经济发展关系研究

外商投资R&D中心建设是我国地区综合竞争力和能力建设的重要环节之一,也是国家科技创新体系的重要组成部分。本文通过对在华外商投资R&D中心建设的发展态势和特点及外商投资R&D中心建设与我国地区综合竞争力和科技创新体系建设的关系分析,就外商投资R&D中心建设对我国经济发展的促进作用作了详细探讨。