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1.
Villagers in northern Laos have been on the move for generations. Recent changes, however, in the location of their village and their daily mobility patterns differ from what they have experienced before; the government's resettlement programme has changed their livelihoods and made them more socially and economically vulnerable. The ethnic groups we studied have decided to use mobility to resist state control and seek livelihood security for themselves. By using the concept of motility, this article analyses how this household and community choices have a gender-differentiated impact. The mobility patterns of men and women have changed. While men attend to long-term investments, women are forced to make ends meet on a day-to-day basis. Men visit the market and public places more frequently, while women spend more time looking for non-timber forest products and working as hired labour. Although women now support the family and their mobility has increased, their say in the household seems to be on the decline, resulting in weakening women's motility.  相似文献   
2.
The proposition that religious landscape is an expression of the ideology and world-view of its makers is tested through the identification of historical shifts in the ideology and world-view of Japanese Buddhism and concomitant shifts in the spatial order of Buddhist precincts. Focusing on temples in the Kyoto-Nara region, ideological changes expressed in the site characteristics, orientation, structures and their spatial arrangements, and use of land in gardens are documented.
La proposition qui dCclare que le paysage religieux exprime l'idkologie et le point de vue mondial de ses createurs se met a l'epreuve par I'identification des changements histonques dans l'idkologie bouddhiste aussi que dans les variations spatiales des enceintes bouddhistes. L'Ctude, en examinant les temples de la region Kyoto-Nara, documente les changements idkologiques manifestes par les caracteristiques de l'emplacement, l'orientation des edifices et I'usage de la terre aux jardins.  相似文献   
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4.
We report a successful extraction and sequencing of ancient DNA from carbonized rice grains (Oryza sativa) from six archaeological sites, including two from India and four from Thailand, ranging in age from ca. 2500 to 1500 BP. In total, 221 archaeological grains were processed by PCR amplification and primary-targeted fragments were sequenced for comparison with modern sequences generated from 112 modern rice populations, including crop and wild varieties. Our results include the genetic sequences from both the chloroplast and the nuclear genomes, based on four markers from the chloroplast and six from the nuclear genome. These markers allow differentiation of indica rice from japonica rice, the two major subspecies of Asian rice (O. sativa) considered to have separate geographical origins. One nuclear marker differentiates tropical and temperate forms of subspecies japonica. Other markers relate to phenotypic variation selected for under domestication, such as non-shattering, grain stickiness (waxy starch) and pericarp colour. Recovery and identification of sequences from nuclear markers was generally poor, whereas recovery of chloroplast sequences was successful, with at least one of four markers recovered in 61 % of archaeological grains. This allowed for successful differentiation of indica or japonica subspecies variety, with japonica identified in all the Thai material and a mixture of indica and japonica chloroplasts in the two Indian assemblages. Rice subspecies was also assessed through conventional archaeobotanical methods relying on grain metrics, based on measurements from 13 modern populations and 499 archaeological grains. Grain metrics also suggest a predominance of japonica-type grains in the Southeast Asian sites and a mixture of japonica and indica in the Indian sites with indica in the minority. The similar results of grain metrics and ancient DNA (aDNA) affirm that grain measurements have some degree of reliability in rice subspecies identification. The study also highlights the great potential of ancient DNA recovery from archaeological rice. The data generated in the present study adds support to the model of rice evolution that includes hybridization between japonica and proto-indica.  相似文献   
5.
This article presents a hierarchical flow capturing location problem (HFCLP) and proposes an effective Lagrangian heuristic solution method. The original flow capturing location problem (FCLP) aims to locate a given number of facilities on a network to maximize the total flow that can be serviced at facilities along their preplanned routes, such as daily commute to work. We extend the original model to allow a decision maker to select the size of facilities among m different size alternatives. Larger facilities are assumed to be more attractive and, therefore, can attract more customers, but they cost more to construct than smaller ones. Customers deviate from their preplanned routes to access a facility's service when the size of the facility is sufficiently large. The degree of deviation from the original path is measured by the additional distance customers have to go to access facilities, and the acceptable deviation distance becomes larger as the size of a facility increases. This article presents a new problem in which the number of facilities of each size and their locations are simultaneously determined so as to capture as much flow as possible within the total budget available for locating all facilities. We present an integer programming formulation of the problem and devise a Lagrangian relaxation solution method. The proposed algorithm is tested using road networks with 300 and 500 nodes. The results show that the method produces high‐quality solutions in a fairly short time. Este artículo presenta un problema de localización de captura de flujo jerárquico (hierarchical flow capturing location problem‐HFCLP) y propone un método heurístico eficiente de tipo Lagrange (lagrangian). En su formulación original el HFLCP tiene como objetivo localizar un número determinado de instalaciones en una red con el fin de maximizar el flujo total que puede ser atendido por las instalaciones existentes a lo largo de rutas preestablecidas, como en el caso por ejemplo, de los desplazamientos diarios del lugar de residencia al de trabajo. Los autores amplían el modelo original para permitir que el tomador de decisiones seleccione el tamaño de las instalaciones entre “m” alternativas. Se asume que las instalaciones más grandes son más atractivas que las más pequeñas y, por lo tanto, pueden atraer a más clientes, pero a la vez, son también más costosas de construir. Los clientes se desvían de su ruta preestablecida para acceder al servicio de una instalación cuando el tamaño de la instalación es lo suficientemente grande. El grado de desviación de las rutas se mide por la distancia adicional que los clientes viajan para acceder a las instalaciones. La distancia de desviación aceptable se hace más grande en relación al tamaño de la instalación. En este artículo se presenta un nuevo modelo para el HFLCP en el que el número de las instalaciones de cada tamaño y su ubicación son determinadas simultáneamente con el fin de capturar la mayor cantidad de flujo dentro del presupuesto total disponible para la localización de todas las instalaciones. Los autores presentan una formulación de programación entera (integer programming) del HFCLP e implementan un método que relaja la solución lagrangiana. El algoritmo propuesto es evaluado utilizando redes viales con 300 y 500 nodos. Los resultados muestran que el nuevo método produce soluciones de alta calidad y en tiempos de computación relativamente cortos. 本文介绍了一种分层的截流选址问题 (HFCLP),提出了一个有效的拉格朗日启发式解决方法。最初的截流选址问题(FCLP)目标是在网络上布局给定数量的设施使总流量最大,使按预定路线的行进流可以获得最大的服务,如每日的工作通勤。本文对原始模型进行扩展,让决策者可在不同的设施规模选择方案中进行规模选择。假设更大规模设施具有更大的吸引力,因此也能够吸引更多的客户,但同时也需要更多的建造成本。当设施规模足够大时,消费者会选择偏离预定路径而进入该设施的服务范围。对原始路径的偏离程度可通过用户进入该设施所增加的额外距离度量。可接受的偏差距离随着设施规模增大而增大。本文提出了在总预算确定条件下,同步确定不同规模设施数量及其位置以实现截取最大流量的新问题,并给出了该问题的整数规划方法,设计了拉格朗日松弛解法。通过300和500个节点的网络测试,结果显示该算法可在相当短时间内获得高质量的解决方案。  相似文献   
6.
Needs for protecting cultural manifestations marked as ‘heritage’ are often claimed when they are at the risk of destruction or when they are being destructed. Considering destruction as opposed to protection, groups concerned with heritage, such as the state agencies, archaeologists, and the locals, tend to emphasise the value of heritage. Focusing on the case of the Roman mosaics discovered in Zeugma, southeast Turkey, this paper explores the ways in which the destruction of heritage is perceived and understood, and what aspect of destruction is emphasised to claim its significance for heritage. Analysing in what way destruction of the Zeugma mosaics is problematised, this paper also considers the political aspects of presenting the destruction of heritage, in particular, in campaigns for heritage preservation. Through this, the paper examines how stories of destruction work to produce and enhance the distinction between protection and destruction, and suggests how the fragmentary or ruined state of heritage objects can be alluring.  相似文献   
7.
Japanese rice cultivation in paddy fields has 2,400∼3,000 years of history. Most of modern Japanese rice varieties are classified as Temperate-japonica (Tm-J). Few landraces are recognized as Tropical-japonica (Tr-J) only in southwestern Japan. However, ancient DNA studies and phytolith analysis suggest that Tr-J strains were more popular in the past than now. Maekawa is a complex archaeological site composed of paddies dated from the Yayoi (2,100 years BP) to the Heian (1,100 years BP) periods. Phytolith analysis indicates that intensive rice cultivation was practiced in both periods, but there was no cultivation in the intervening period. Morphological features of bulliform phytoliths suggest that Tr-J was cultivated during both periods. Locally, rice cultivation during the Heian period was brought to a close by a flood event, in which immature rice plants were pulled down and buried in silt to be preserved in a quasi-carbonized/ waterlogged state. Ancient DNA (aDNA) analysis of the carbonized plant culm from Heian Maekawa recovered chloroplast DNA sequences of the 6C7A plastid subtype, which is common to both Tr-J and Tm-J, whereas two plastid subtypes, such as 6C7A and also 7C6A, were found in aDNA of carbonized grains from the Tareyanagi site of the Yayoi period. The latter plastid subtype was specific only to Tr-J. In order to better characterize the past rice populations, modern landraces collected in the local area were classified with morphophysiological traits. Some of the landraces were found to carry several traits of Tr-J, including bulliform phytolith types, but mixed with Tm-J traits. Based on the discontinuous distribution of rice phytoliths between the Yayoi and the Heian period, the early introduction of rice cultivation may have been discontinuous and locally reintroduced after a ∼1,000-year hiatus, but with a genetically different rice population. Such populations were composed from Tr-J like strains as shown by landraces but with reduced diversity in plastid types. Through such changes, since the Yayoi era, Tr-J was largely replaced by Tm-J, although ancient Tr-J continued to participate in the genetic makeup of later rice populations and may have aided the local adaptation of introduced Tm-J.  相似文献   
8.
This study tests the neoclassical concept of interregional migration in post–World War II Japan. The lead-lag relationship between net migration to a core area and regional income inequalities is examined by modeling an ARIMA transfer function. Until 1961, there was a rapid growth in net migration from the periphery to the core area that was accompanied by rapid divergence in regional income inequalities. Since then, migration to the core apparently has declined due to a convergence of regional income inequalities. The time series analysis indicates there has been short-run, as well as long-run, volatility in migration related to cyclical variations in economic performance in the core.  相似文献   
9.
A variety of places, functioning diversely in human existence, manifest a certain distinctiveness. The distinctiveness is nowhere as explicit and as clearly expressed, perhaps, as it is in “religious places.’ Of these places, holy places of pilgrimage have been of particular attraction to geographers.1 There is wide variation in the nature of pilgrimage as defined within the canonical structure of each religion; yet it would seem that all pilgrimages are fundamentally place-bound institutions having specific physical locations. A pilgrimage incorporates certain practices, and requires a specific setting, thus giving rise to distinct geographic and behavioural forms.  相似文献   
10.
香港新界有许多乡村,每逢春节元宵,差不多都有举行以乡民的歌唱为主的祭祀,但是其中道士参加的例子,只有两个,就是粉岭彭氏村和金钱侯氏村,都称为太平洪朝。在这些道士所做的仪式中,我们才可以看到乡民向神灵恳求的内容。这两个例子之中,金钱更多保留原始春祈社祭的因素。因此,下面拟研讨金钱侯氏村洪朝祭祀。  相似文献   
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