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1.
阎步克 《史学月刊》2001,5(1):53-59
现代官等级制有“品位分类’’和“职位分类”两种类型,前以官员的个人品级为中心,后则以职位所系权力责任为中心。作由此引申出了“品位分等”、“职位分等”概念,并通过秦汉禄秩等级和唐代武散阶的区别,说明了“品位一职位’’概念在传统官阶制研究中的分析价值;进而把它们与官僚“自利取向”、“服务取向”概念结合起来,从而为中国古代官僚等级制研究提供了一个新视角。  相似文献   

2.
The suitability of imagery from the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA series of satellites for the synoptic classification of circulation trends in the European Arctic is assessed with reference to data from three climate stations. Simplified synoptic cyclonic classifications are derived from the satellite imagery and tested against climate data. Five classes of frontal system are derived from the tracking of systems over the UK‐Scandinavia‐Baltic region using 1460 satellite images over two years. An index based on the qualitative interpretation of satellite imagery was related to the reference data. The tracking of the systems in the imagery also facilitates a comparison of travel times across the region and the frequency of occurrence. Frontal systems that remain largely stationary over the Baltic were found to correlate best with precipitation at the reference sites. The paper thus investigates the use of AVHRR imagery for the categorisation of weather patterns towards deriving quantitative relationships between circulation classes and weather elements (such as temperature and precipitation) where, for example, climate data are sparse or where skills required for the interpretation of Height Potential Fields are lacking.  相似文献   

3.
Models and classifications have been a part of thinking about public archaeology since at least the early 2000s, but how are these ideas translated into practice? By looking into the development of such classifications and models and by examining archaeologists’ attitudes to an archaeological education outreach project for schoolchildren in Oslo, Norway, this paper looks at the relationship between classification, theory, and practice in public archaeology.  相似文献   

4.
In this paper we report the results of an experiment with automated landform delineation and classification from digital elevation models (DEMs) using object-based image analysis (OBIA). Archaeologists rely on accurate and detailed geomorphological maps to predict and interpret the location of archaeological sites. However, they have been using high-resolution DEMs primarily for visual interpretation and expert-judgement classification of landform. OBIA can perform these classifications much faster and in a more objective fashion. The method was tested on a study area in the south east of the Netherlands. It is concluded that OBIA is a suitable technique for quick and objective delineation of landform, but needs an improved conceptual framework adapted to the local situation and archaeological questions to better identify and interpret the derived landform objects.  相似文献   

5.
A novel morphological analysis of ceramic assemblages is presented using objective, automatic and computerized method for clustering and classification. The analysis is based on the entire shape of the potsherds, as expressed by three mathematical representations of their profiles. The similarity between profiles is mathematically defined in terms of the above mentioned representations. Cluster Analysis and Discriminant Analysis are used to reveal a hierarchical classification of pottery assemblages. The method is illustrated here by a detailed analysis of an assemblage which was classified previously by a pottery expert. A quantitative comparison of the two typologies reveals the power and archaeological sense of the new method.  相似文献   

6.
As part of the empirical planning science, this article integrates theory, empirical findings and policy. It first deals with the question how to reach a theoretically well-grounded and empirical applicable delineation of local labour market areas. An inductive classification method is selected based on the behaviour of individual commuters without selecting a priori central places. By this, new urban forms like polynodality are included. In using this method for the Netherlands, 31 local labour market areas (LLAs) were distinguished. Moreover, the article elaborates some simple measures to test the optimality of LLA classifications. The 31 LLAs adequately reflect the 'reality' of actual functional labour market relationships. The article also investigates the matching between reality and the LLA classification as used in spatial policy. There is a large gap between reality and policy. This urges bringing the policy classification more in line with existing LLAs. Alternatively, if one considers the present policy classification as an instrument for future spatial structure, much additional effort will be required. The findings of the article can be easily applied to other European countries.  相似文献   

7.
Geographer C. W. Thornthwaite proposed in 1948 a moisture index called Thornthwaite Moisture Index (TMI) as part of a water balance model for a new classification system for climate. The importance of TMI climatic classification has been recognised in many areas of knowledge and practice worldwide over the last 60 years. However, although past climate research was focused on developing adequate methods for climate classification, current research is more concerned with understanding the patterns of climate change. The use of TMI as an indicator for climate change is still an incipient area of research. The contributions of this paper are twofold. First, it is to fully document a methodology based on geostatistics adopted to produce a time series of TMI maps that are accurate and have high spatial resolution. The state of Victoria, in Australia, over the last century, is used as the case study. Second, by analysing these maps, the paper presents a general evaluation of the spatial patterns found in Victoria related to moisture variability across space and over time. Some potential implications of the verified moisture changes are discussed, and a number of ideas for further development are suggested.  相似文献   

8.
The author, who regards landscapes as physical terrain types rather than as regional units, briefly surveys previous approaches to landscape classification and offers his own classification scheme. The scheme is based on a major division of all landscapes into plains (lowland and upland) and mountain types (distinguished by vertical zonality). Within the classification, soils and bioclimatic criteria are used to determine the upper rungs of the hierarchy, and geological and geomorphic criteria are taken into account mainly at the lower levels.  相似文献   

9.
According to Bruno Latour, the imposition of crude classificatory schemes onto complex entities has two main effects: firstly, the classifications lead social actors to sift the world into the schemes' simple categories; secondly, underlying relations subvert the schemes' functioning, resulting in the production of transgressive 'hybrids'. Thus, classification and relation interact and this interaction shapes both the practice of classification and the world that is classified. In this paper, we examine the interaction between a scheme of spatial classification and the spaces that are enrolled within the scheme. We show that a division between urban and rural areas was put in place in post-war England in order to protect a 'vulnerable' rural nature from urban advance. However, as soon as it was imposed, this division was transgressed by complex socio-economic processes. We assess the response to this transgression by considering the activities of the Council for the Protection of Rural England (CPRE), an environmental group that played some considerable part in constructing the urban–rural divide in the first place. We show that the CPRE has responded to the 'paradox of preservationism' by placing urban–rural divisions in the context of 'ecological' relationships. We illustrate this 'ecologization' of the modernist divide using the example of housing and we argue that the CPRE's ecological approach illustrates how a new alignment between 'urban' and 'rural' may herald a new and more sophisticated form of spatial classification.  相似文献   

10.
11.
This paper presents a methodology to combine the technology of the terrestrial laser scanner with the techniques of digital image processing in order to study damages on stony materials that constitute historical buildings. This methodology has been tested using intensity data from three terrestrial laser scanners with different technical specifications. The unsupervised classification algorithms were used for the classification of 2D intensity images derived from the 3D information obtained from laser scanner equipment. The results obtained show the potential of the use of intensity data from terrestrial laser scanner for the recognition and characterization of certain pathologies in building materials that constitute historical buildings.  相似文献   

12.
The author, following previous work by himself and A.A. Mints, offers a functional typology and classification of Soviet cities based on the percentage of the urban labor force employed in industry and transportation combined and in industry alone. The classification is apparently based on unpublished employment data supplied to the author by the Central Statistical Administration USSR. The classification distinguishes major capital cities, diversified industrial, transport, local organizing, recreation, and other types of cities.  相似文献   

13.
粗糙集理论(RST)及其在古陶瓷分类上应用的初探   总被引:5,自引:2,他引:3  
为了获得古陶瓷器的产地和制造年代的信息,需要应用科学分析方法对古陶瓷器的化学组成数据进行归纳、分类。本文介绍了粗糙集理论(RST)的一些基本概念,同时给出了用粗糙集方法建立古陶瓷分类模型的基本步骤和对古陶瓷器化学组成数据的处理方法,通过对瓷器产地、时代判别的应用举例,表明用该方法对古陶瓷分类研究的效果能达到预期目的,回代检验分析结果正确率为100%。  相似文献   

14.
This is the second of the two papers that review the literature of archaeological lithic analysis over the last decade. This paper concentrates on aspects of stone tool research that are not directly related to the production or procurement of the tools themselves. It is divided into classification, functional analyses, behavioral processes, and approaches to the subject currently popular among analysts. As with the previous paper, an attempt has been made to be as comprehensive as is reasonable, though availability of sources has resulted in an emphasis on North American literature.  相似文献   

15.
ABSTRACT

Established methods for delineating anthropogenic and natural strata during fieldwork are based on the visual and tactile perception of excavators. Modern image analysis techniques can help to ensure objectivity and reproducibility when documenting sections and plana. Within this study we examine the unsupervised classification of digital images as a technique for delimiting layers and identifying stratigraphic features. Assessing the potential of this approach, we exemplarily captured soil profiles with high-contrast stratigraphy, located in the area of a historical vineyard (Brandenburg, Germany). Reproducible analyses were carried out using open-source software, allowing for the future advancement of the methodology utilized and providing a basis for the analysis of more complex stratigraphic sequences. We compare clustering results of high-resolution RGB and hyperspectral images (470–830?nm, 37 bands). Multiple pre-processing and processing steps are carried out to evaluate their influence. Our results render the semi-automatic analysis of RGB images helpful for stratigraphic interpretation.  相似文献   

16.
A new calibrated method based on erosion phenomena is presented for the dating of petroglyphs (rock carvings and engravings) and geomorphic surfaces. In contrast to previous methods of petroglyph dating, which sought to determine the age of various mineral and organic deposits coating the art, microerosion analysis attempts to ascertain the time of mark production itself, by creating a geomorphologically based time frame. The method involves the establishment of calibration curves for the crucial variables to be considered. These are the rock type and climate of a particular region, microerosional indices and age. The theory, practical application, and prerequisites of the method are considered, and the paper concludes by defining the disadvantages and advantages of the method.  相似文献   

17.
Identifying tools by means of morphological attributes are widely used in lithic studies to categorize retouched artifacts from different archaeological periods. This procedure has facilitated the exchange of information between separate researchers and has improved the comparison of different assemblages. In these classifications, denticulates and notched tools have been regularly interpreted as analogues and chronologically unvaried in different and vast territories. Based on the definitions developed by Bordes, the denticulate category has become a catchall for any kind of tool bearing concavities. In this paper a new quantitative approach to the classification of denticulates and notched tools is proposed. The new methodology is based on measuring the length of notches and their distribution on the perimeter of the blank. Analyzing the lithic series of the Abric Romaní rock-shelter (Spain) and Grotta Maggiore di San Bernardino (Italy) led to the identification of 11 redundant forms: eight denticulates and three notched tools. Moreover, the application of Kuhn’s Geometric Index of Unifacial Reduction brought local manufacturing trends to light, calling into question the presumed geographical uniformity of these categories of artifacts.  相似文献   

18.
The principle of tree diagrams is applied to the classification of physical-geographic objects. Starting with a tree of logical possibilities, the author first eliminates logically possible classes that do not occur in any real situation, and then eliminates factually possible classes that do not occur in a particular regional setting. The technique, which is said to insure complete, logically consistent and, at the same time, legible classifications, is illustrated with a classification of the intermontane basins of the Stanovoy upland of Siberia. Out of a total of 1344 logically possible classes, 24 are found to be realized in the given regional setting.  相似文献   

19.
Economic classifications of countries are of continuing utility for comparative and analytic purposes. However, traditional methods of arriving at classifications are often ad hoc, subjective, and imprecise, not permitting the assignments to be used for closer analysis. Discriminant analysis is used in this paper to isolate a time‐specific set of economic factors delimiting economic state categories that correspond to core‐periphery states. The core‐periphery framework is shown to be a special case of a hierarchical market scheme. The purposes of this work are (1) to create a theoretically grounded, empirically derived classification over several time periods to permit dynamic comparisons to be made and provide an explanation of change in the global economy, and (2) to provide feedback information from the classification to supply the necessary rigor and quantitative insight to the world‐systems theoretical framework. Results of the analysis suggest that different economic variables provide varying levels of explanation at different times. In particular, variables representing factor endowment provide a greater measure of explanation early in the sequence (for example, 1960) while trade and investment measures are of greater importance in the latter part of the study sequence (for example, 1990). OPEC countries significantly bifurcate the world‐economy classification in 1970 and exhibit separate class characteristics. Even within the short time period, a number of countries are shown to transit among the classes. The model is also able to capture the dependence structure implicit in the world‐systems framework.  相似文献   

20.
国家级高新技术产业开发区发展能力与分类研究   总被引:16,自引:1,他引:15  
利用评估指标和实证统计数据,运用因子分析和聚类分析组合方法,对我国53个国家级高新技术产业开发区发展能力及区划进行了因素分析和分类的综合集成实证研究。  相似文献   

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