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陕西师范大学学报（哲学社会科学版） 2001年第1期30卷 149-152页

作者：毛曦陕西师范大学西北历史环境变迁与经济社会发展研究中心陕西西安710062

不能把编辑学简单划定为基础学科或应用学科。从性质上区别 ,编辑学可分为基础编辑学与应用编辑学两大类。史学编辑学是编辑学体系中专业编辑学的一种。史学编辑活动是一种历史认识活动、史学评论活动。

关键词：史学编辑学编辑活动学科性质学科定位学科体系编辑活动

THE REGIONAL DEVELOPMENT IN A MULTI-CULTURAL BACKGROUND──The Studies of Minority Regions in the Western china

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Chinese Geographical Science 2001年第2期11卷 168-173页

作者： LU La-chang (department of geography, Guangzhou {2. University, Guangzhou 5104.5, P. R. china) 广州师范学院地理系广东广州 510405

china is a country with many nationalities. Each of them has formed its own special culture, which is different from the mainstream of majority Han nationality, by adapting to geo-environment during history. Due to different backgrounds, the regional developmental model of minorities in the western china is different from the Han nationality and western countries. Combining a knowledge-based civilization and sustainable development, the minority areas can seek the systematic integration of culture-economy-ecology. Based on this, the paper suggests that the minority areas in western china should take the way of emphasizing developmental quality rather than developmental quantity for a harmonious system of culture-economy-ecology. Some approaches for developing minority areas in western china have been put foreword.

关键词： the minority regions in the western china multi-cultural background integrated model of economy-culture-ecology

Multi-source data integration and multi-scale modeling framework for progressive prediction of complex geological interfaces in tunneling

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Underground Space 2024年第2期15卷 1-25页

作者： Jingxiao Wang Peinan Li xiaoying Zhuang xiaojun Li xi Jiang Jun Wu department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China College of Environmental Science and Engineering Donghua UniversityShanghai 201620China Institute of Photonics Department of Mathematics and PhysicsLeibniz University HannoverHannover 30167Germany department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 100872China College of Civil Engineering Shanghai Normal UniversityShanghai 200233China

A reliable geological model plays a fundamental role in the efficiency and safety of mountain tunnel ***,regional models based on limited survey data represent macroscopic geological environments but not detailed internal geological characteristics,especially at tunnel portals with complex geological *** paper presents a comprehensive methodological framework for refined modeling of the tunnel surrounding rock and subsequent mechanics analysis,with a particular focus on natural space distortion of hard-soft rock interfaces at tunnel *** progressive prediction of geological structures is developed considering multi-source data derived from the tunnel survey and excavation *** improve the accuracy of the models,a novel modeling method is proposed to integrate multi-source and multi-scale data based on data extraction and potential field ***,a regional-scale model and an engineering-scale model are built,providing a clear insight into geological phenomena and supporting numerical *** addition,the proposed framework is applied to a case study,the Long-tou mountain tunnel project in Guangzhou,china,where the dominant rock type is *** results show that the data integration and modeling methods effectively improve model structure *** improved model’s calculation deviation is reduced by about 10%to 2.%in the mechanical *** study contributes to revealing the complex geological environment with singular interfaces and promoting the safety and performance of mountain tunneling.

关键词： Mountain tunnel Geological modeling Multi-source data Progressive prediction Tunnel portals

High resolution stalagmite δ18O records over the past 1000 years from Dongge Cave in Guizhou

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Science Bulletin 2005年第10期50卷 1003-1008页

作者： HE Yaoqi1, WANG Yongjin1, KONG xinggong1 & CHENG Hai2. 1. College of geography Science, Nanjing normal University, Nanjing 2.0097, {2. 2. department of Geology and Geophysics, Minnesota University, Mineapolis MN 554.5, USA College of geography Science Nanjing Normal University Nanjing 210097 China

Based on MC-ICP-MS U-series dating and stable O-isotope analysis results, a 4.5 years resolution monsoon record over the past 1000 years has been estab- lished for two stalagmites from Dongge Cave, Guizhou. The high resolution oxygen isotope record serves as a proxy for variations in rainfall of Asian southwest monsoon over the Yunnan-Guizhou Plateau. A close relation of the δ 18O record with the ?14. record from tree rings largely reflects impact of centennial-scale solar activity on the monsoon climate changes. The conspicuous decrease in the δ 18O value at AD 172. indicates an abrupt increase in monsoon rainfall, sug- gesting that an atmospheric-oceanic couple over the tropical Indian Ocean plays an important role in rapid increase of the Northern Hemisphere temperature over the last century.

关键词： cave stalagmite oxygen isotope southwest monsoon solar activity Guizhou.

Microstructure,wear and friction behavior of CoCrAITaY-xCNTs composite coatings deposited by laser-induction hybrid cladding

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Rare Metals 2024年第4期43卷 1815-1827页

作者： Sheng-Feng Zhou Yu Long Yan-Liang Yi Cheng Deng Lian-xi Hu Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou510632China Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and TechnologyWuhan430074China MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured MaterialsGuangxi UniversityNanning530004China School of Mechatronics Engineering Guangdong Polytechnic Normal UniversityGuangzhou510635China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China

To improve the wear performance of CoCrAlYTa coating,part of the carbon nanotubes(CNTs)chemically reacted with Ta to form reinforcement phase(TaC),while the other CNTs were retained as lubrication ***,the CoCrAlYTa-xCNTs(x=0,1,2.and 4.wt%)composite coatings were prepared by laserinduction hybrid cladding(LIHC),and the microstructure and wear resistance of coatings were systematically *** show that the coatings are mainly composed of TaC,y-(Co,Cr)andβ-(Co,Cr)*** the CNTs content increases from 0 wt%to 4.wt%,the volume fraction of TaC increases from 13.11 vol%to 16.12.vol%.Meanwhile,the nano-hardness ofγ-(Co,Cr)andβ-(Co,Cr)Al are improved from 7.4. and 9.72.to 9.36 and 11.19 GPa,*** a result,the microhardness of coating increases from HV536.2. to HV 738.16,the wear rate decreases from32.4.10^(-3)to 6.1×10^(-3)mg·m^(-1),and the average friction coefficient decreases from 0.55 to *** good wear performance of the coating is attributed to the formation of TaC and the existence of remained CNTs lubricant film.

关键词： Carbon nanotube MCrAlY coating Friction and wear performance Laser-induction hybrid cladding

A unified Minorization-Maximization approach for estimation of general mixture models

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Applied Mathematics(A Journal of Chinese Universities) 2024年第2期39卷 343-362页

作者： HUANG xi-fen LIU Deng-ge ZHOU Yun-peng ZHU Fei School of Mathematics Yunnan Normal UniversityKunming 650092China department of Statistics and Actuarial Science The University of Hong KongHong KongChina

The mixed distribution model is often used to extract information from heteroge-neous data and perform modeling *** the density function of mixed distribution is complicated or the variable dimension is high,it usually brings challenges to the parameter es-timation of the mixed distribution *** application of MM algorithm can avoid complex expectation calculations,and can also solve the problem of high-dimensional optimization by decomposing the objective *** this paper,MM algorithm is applied to the parameter estimation problem of mixed distribution *** method of assembly and decomposition is used to construct the substitute function with separable parameters,which avoids the problems of complex expectation calculations and the inversion of high-dimensional matrices.

关键词： MM algorithm mixed distribution model parameter estimation assembly decomposition tech-nology parameter separation

Study on the Evolution of River Networks during Urbanization since the Development and Opening of Pudong New Area, Shanghai

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Chinese Journal of Population,Resources and Environment 2005年第2期3卷 49-54页

作者： Chen Dechao 1 & Chen Zhongyuan 2. Urban and Environment department, University of Science and Technology of Suzhou,Suzhou 2.5011, china2.department of geography, East china normal University, Shanghai 2.0062. china Urban and Environment department University of Science and Technology of Suzhou Suzhou 215011 China department of geography East China Normal University Shanghai 200062 China

Pudong New Area of Shanghai, as areform and opening front of china, holds the balancein economic development of Yangtze Delta and evenof china. After a large-scale infrastructure andfunction development in the past decade, it hasbecome "the miniature of modernization constructionin Shanghai" and "the symbol of reform and openingin china". But, due to the rapid urbanization andassociated environmental issues, rivers in the studiedarea remain seriously polluted and are alsodiminishing. Consequently this damages the featuresof the water village and investment setting in thePudong New Area. On the basis of analyzing the aerophotographs (1989, 1994.and 1999) and land usedata by Remote Sensing and Geographic InformationSystem, this paper illustrated that: 1) The river densityof the studied area has declined by 1/3 from 1989to 1999; 2. Since the development and opening oPudong, the river system has experienced twodeclining phases: rapid declining (1989-1994. andslow declining (1994.1999); 3) The fast urbanizationof land-use is a primary threat to the river systemwhich is particularly prominent within the Inner BelWay and in the developed zone of Pudong area.

关键词： Pudong New Area river networkevolution land use change remote sensing geographicinformation system

The regional disparities of socio-economic development in rural Jiangsu Province,china

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Journal of Geographical Sciences 1998年第3期8卷 57-65页

作者： TANG Maolin department of geography, Nanjing {2. University, Nanjing 2.0097 china

Since the implementation of reform and open door policy in china, Jiangsu has become one of the provinces which have the highest speed of economic development. With the implementation of the uneven development strategy, Jiangsu has witnessed a widening dichotomy in levels of socio economic development: southeast showing rapid improvement and north showing little improvement, particularly in rural areas. Based on factor analysis, it is argued that foreign investment, agricultural productivity, the character of regional economic structures, and the level of urbanization all contribute in varying ways to the inequalities in levels of socio economic development in different regions of Jiangsu. According to the levels of socio economic development, eleven regions are categorized into three groups.

关键词： socio economic development areal disparity factor analysis rural areas Jiangsu china.

STABILITY　OF　STEADY－STATE　SOLUTIONS　OF　THE　COMPETITION　MODEL　IN　THE　CHEMOSTAT

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Systems Science and Mathematical Sciences 1994年第3期7卷 256-260页

作者： WU Jianhua (xi’an Institute of Highway, xi,an 710064. china)LI Yanling({2. ff Mathematics, Shanxi normal University, xi’an 710062. china) 西安公路交通大学陕西西安 710064 陕西师范大学数学系陕西西安 710062

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关键词： Linear stability steady-state solutions bifurcation solutions i-simple eigenvalue principal eigenvalue.

A study on neogene volcanic landforms of the middle Tanlu fault belt

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Journal of Geographical Sciences 2000年第4期10卷 121-128页

作者： HAN Mei (geography department, Shandong {2. University, Jinan 2.0014.china) 山东师范大学山东济南

The west block of the middle belt of TanLu fault belt is one of the areas where volcanic landforms are mainly distributed. This paper divides the volcanic landforms into four grades according to formation, morphology, and ingredient of matter. Lava cones are divided into two types based on the force of top-support and the fluid form of magma: the arc-projecting type and spring-spilling type. Furthermore, the courses of development of volcanic landforms are divided into three stages according to the form and strength of volcanic activities.

关键词： volcanic landforms Neogene TanLu fault belt