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1.
Early research on migration in LDCs, initially motivated by labor market postulates offered by Harris and Todaro, built upon general equilibrium models of interregional trade. In contrast, recent research on migration (such as Brueckner and Kim in this issue) builds upon a partial equilibrium analysis that is based on an urban land model. There are subtle differences between these models that complicate intermodel comparisons. The current paper, motivated by this complexity, has three purposes: (1) a mathematical explication of the state of the art in migration modeling, (2) a provision of further insights into the Todaro paradox, and (3) a suggestion for future research predicated on melding the urban land and interregional literatures.  相似文献   

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This article focuses on the development and evolution of migration and population redistribution modeling within the spatial context of multiregional demography. It begins in 1965, when the state-of-the-art consisted largely of ideas and techniques imported from other disciplines (regression analysis, gravity models, Markov chains, and matrix cohort-survival population projection models) and then continues on to tell the story of multiregional demography, its evolution and emergence as a fully developed paradigm for studying the spatial dynamics of migration and population redistribution and, more recently, its approach for estimating the necessary migration input measures from inadequate data.  相似文献   

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A review of Soviet migration research finds that only a modest beginning has been made despite some useful results. Further progress in this area requires broader migration studies, beyond the manpower-oriented approach adopted thus far; wider use of mathematical techniques and improved research methods; improvements in the statistical data base on migration, and the coordination of Soviet migration research through the establishment of a central research center in this field.  相似文献   

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张彩萍 《丝绸之路》2009,(16):84-85
在麦积山石窟的洞窟形制中,有一部分是仿照北朝时期的木结构建筑开凿和修建的,是对当时建筑形式的一个直接反映,对了解北朝建筑史有重要价值。另外,在洞窟壁画中也有单体建筑和建筑群的反映,如城池、民居等,都是非常珍贵的研究资料。本文分门别类地对这些建筑以及其与世俗建筑之间的基本关系进行了分析。  相似文献   

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哈密地区维吾尔族传统服饰,特别是妇女服饰中的图案艺术,对于维吾尔族文化的发展和变迁有着特殊的价值和意义。它不仅具有独特的造型、色彩等形式语言,还有着深刻的象征寓意和文化内涵。本文主要从哈密地区维吾尔族传统服饰中图案装饰艺术的题材、形式、工艺等方面探讨其特征和意义。  相似文献   

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This essay constructs philosophical defenses against criticisms of my theory of the end of art. These have to do with the definition of art; the concept of artistic quality; the role of aesthetics; the relationship between philosophy and art; how to answer the question “But is it art?”; the difference between the end of art and “the death of painting”; historical imagination and the future; the method of using indiscernible counterparts, like Warhol's Brillo Box and the Brillo cartons it resembles; the logic of imitation—and the differences between Hegel's views on the end of art and mine. These defenses amplify and fortify the thesis of the end of art as set forth in my After the End of Art: Contemporary Art and the Pale of History (1997).  相似文献   

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Abstract

North-West England was the site of Britain's first canal and of one of the last true canal warehouses. The Duke's Warehouse in the Castlefield Canal Basin in Manchester was the first canal warehouse to have the classic design features of internal canal arms, multi-storeys, split level loading, terracing and water powered hoists, and was built between 1769 and 1771. The Great Northern Warehouse, in the centre of Manchester, was the last of the monumental road, rail and canal interchanges to be built in the Victorian period. Finished in 1898, it marked the close of the canal warehouse tradition and the beginning of motorised road transport storage. Between the two buildings were nearly 130 years of innovation and change. With at least 58 surviving canal warehouses across the region, from Kendal in the north to Bunbury in the south, North-West England contains one of the largest, and most important, groups of canal warehouses in Europe (Figures 1 and 2). As general purpose redistribution centres they were a vital element in feeding the rapidly growing industrial urban populations of the region. Furthermore, their design influenced the building of the first railway warehouses, and later the textile warehouse, and although the canals were superseded by the railway, the canal warehouse remained an important element of the transport economy until the arrival of road haulage in the 1920s. This paper is based upon research undertaken by the author in 2000 and 2001 as part of the Tameside Archaeological Survey. This is a landscape archaeology project funded by Tameside MBC and undertaken on their behalf by the University of Manchester Archaeological Unit.  相似文献   

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王昕 《华夏考古》2000,(1):111-112
众所周知,欧洲旧石器时代的先民留下.的骨角、象牙类饰物及洞穴岩画等原始艺术品是欧洲考古研究的一个重要领域。目前有关研究大多着重于解释这些原始艺术品本身所蕴藏的含义。然而由于时间的阻隔,今人...  相似文献   

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杨光熙 《史学月刊》2002,(12):111-114
《史记》篇章编次较灵活,不似《汉书》严整,有些地方乍一看似乎还很“混乱”。因此,历代学多有不解。司马贞在其《索隐》里就曾批评太史公篇章编次不当,认为《司马相如传》不宜在《西南夷》下,《大宛传》不宜在《酷吏》、《游侠》间。金人王若虚继之说:“凡诸夷狄,当以类相附,则《匈奴》亦岂得在《李广》、《卫青》之间乎?……  相似文献   

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