Geographic information system‐based edge effect correction for Ripley's K‐function under irregular boundaries

Ripley's K‐function is a test to detect geographically distributed patterns occurring across spatial scales. Initially, it assumed infinitely continuous planar space, but in reality, any geographic distribution occurs in a bounded region. Hence, the edge problem must be solved in the application of Ripley's K‐function. Traditionally, three basic edge correction methods were designed for regular study plots because of simplified geometric computation: the Ripley circumference, buffer zone, and toroidal methods. For an irregular‐shaped study region, a geographic information system (GIS) is needed to support geometric calculation of complex shapes. The Ripley circumference method was originally implemented by Haase and has been modified into a Python program in a GIS environment via Monte Carlo simulation (hereafter, the Ripley–Haase and Ripley–GIS methods). The results show that in terms of the statistical powers of clustering detection for irregular boundaries, the Ripley–GIS method is the most stable, followed by the buffer zone, toroidal, and Ripley–Haase methods. After edge effects of irregular boundaries have been eliminated, Ripley's K‐function is used to estimate the degree of spatial clustering of cities in a given territory, and in this paper, we demonstrate that by reference to the relationship between urban spatial structure and economic growth in China.     

Return migration in China: a case study of Zhumadian in Henan province

This paper examines the causes and process of return migration from the coastal region to the inland provinces in China since the early 2010s, based on the case study of Zhumadian city in Henan Province. Surveys administered to both rural migrants from Zhumadian to Shenzhen and recent returnees to Zhumadian are presented. Industrial relocation and the development of inland provinces trigger the current wave of return migration. Family obligations, better prospects of the hometown, and barriers to settle in Shenzhen because of the hukou system are the principal reasons to return. Most of the migrants return to work in a factory or start a business. Some migrants purchase apartments in Zhumadian as a prelude to returning and starting a business at a future date. Returnees prefer settling down in urban areas rather than in their rural origins. In light of the empirical findings, the authors argue that return migration will ease the mismatch of labor supply and demand between the inland and coastal provinces, such that the Lewis Turning Point has not been reached yet. The continuing process of rural migrants returning to and settling down in Zhumadian suggests a way to achieve some of the goals in China’s new-type urbanization plan, as local governments may address the two major challenges of the plan, namely, local job creation and financing for increased demand for public services.     

Complexity and nationalism

Classic theories of nationalism, whether modernist or ethnosymbolist, emphasise the role of elites and spread of a common imagined community from centre to periphery. Recent work across a range of disciplines challenges this account by stressing the role of horizontal, peer-to-peer, dynamics alongside top-down flows. Complexity theory, which has recently been applied to the social sciences, expands our understanding of horizontal national dynamics. It draws together contemporary critiques, suggesting that researchers focus on the network properties of nations and nationalism. It stresses that order may emerge from chaos; hence, ‘national’ behaviour may appear without an imagined community. Treating nations like complex systems whose form emerges from below should focus research on four central aspects of complexity: emergence, feedback loops, tipping points and distributed knowledge, or ‘the wisdom of crowds’. This illuminates how national identity can be reproduced by popular activities rather than the state; why nationalist ideas may gestate in small circles for long periods, then suddenly spread; why secession is often contagious; and why wide local variation in the content of national identity strengthens rather than weakens the nation's power to mobilise.     

ANIMAL HISTORY

This review reflects on animal history as a subfield of the discipline of history and presents its main arguments and future tasks. Its main goal is to identify the new research prospects and potentials proposed by the book edited by Susan Nance, The Historical Animal. These include such topics as the problem of “the animal's point of view,” animal agency (animals understood as “historical” agents and actors), the problem of identifying traces of animal actions in “anthropocentric” archives and searching for new historical sources (including animals’ testimonies). It also explores methodological difficulties, especially with the idea of the historicization of animals and the possible merger of the humanities and social sciences with the natural and life sciences. The review considers how studying animals forces scholars to rethink to its foundations history as a discipline. It claims that the most progressive proposals are coming from scholars (many of whom are historians) who advocate radical interdisciplinarity. The authors are not only interested in merging history with specific sciences (such as animal psychology, ecology, ethology, evolutionary biology, and zoology), but also question basic assumptions of the discipline: the epistemic authority claimed by historians for building knowledge of the past as well as the human epistemic authority for creating such knowledge. In this context several questions emerge: can we achieve “interspecies competence” (Erica Fudge's term) for creating a multispecies knowledge of the past? Can research on animals’ perception of change help us to develop nonhistorical approaches to the past? Can we imagine accounts of the past based on multispecies co‐authorship?     

乐都县非公有制经济发展刍议

改革开放以来,乐都县非公有制经济尽管得到长足发展,但进一步发展仍要排除各种制约因素。从政府层面看,应找准发展的着力点。     

我国民主政治建设的逻辑起点

我国的民主政治建设离不开中国共产党的领导。社会主义市场经济的发展和繁荣、人们对合法利益的追求,这些都是孕育民主意识的温床,是我国民主政治建设新的逻辑起点。     

Asphaltum hafting and projectile point durability: an experimental comparison of three hafting methods

The design of a projectile delivery system often plays a critical role in the durability and breakage patterns associated with spent projectile points. This paper presents the results of an experimental project designed to examine projectile point durability and breakage patterns between three different hafting methods. Specifically, we compare two asphaltum hafting techniques drawn from archaeological and ethnohistoric accounts from the Central Valley of California with a more stereotypical cross-hatched sinew hafting system. Our results suggest a small yet statistically significant increase in durability among asphaltum hafted points, opening the door to future research on these ethnohistorically documented hafting techniques.     

A China Paradox: Migrant Labor Shortage amidst Rural Labor Supply Abundance

A U.S. geographer and noted authority on China's urbanization seeks to explain the apparent paradox between reported recent shortages of migrant labor in cities in eastern China's export-oriented manufacturing belt and the abundant supply of labor in China's rural areas. He examines important socioeconomic contexts often overlooked in the debate over whether China has reached the Lewis turning point (when dual rural-urban labor markets begin to merge and a labor surplus economy is transformed into a full-employment economy), which make possible the existence of such shortages over the short term and in local areas. These include the special characteristics of China's export industrialization (e.g., preference for workers in the age category 16-30); its immense migrant labor force, constrained under the hukou system; the short-term impacts of China's economic stimulus program launched in early 2009 in the wake of the global economic crisis; and cycles in the global economy that support or impede export production.     

曲折中艰难前行——辛亥后社会长期动乱的困惑与思考

辛亥革命以后中国社会长期军阀割据、国家分裂、战争频仍、社会动乱的现实。让人们对革命的成果和意义感到困惑。然而纵观英、法、关、日诸国政治近代化的进程,元一例外都经历过曲折与反复。中国的政治近代化进程亦然。政治近代化是一个不断进步、发展、完善的过程。不可能一蹴而就;它必须有一个起点、开端,然后才有可能继续前进。中国的民主革命,从辛亥算起,到1949年真正意义上的近代民主革命任务的完成,为时近40年,这较之荚、法、美、目政治近代化所经历的反复与曲折、所经历的时间,并不为过。辛亥革命是中国政治近代化过程的起点和开端,没有辛玄革命,就没有中国政治近代化的进程。     

Shooting out the slate: working with flaked arrowheads made on thin-layered rocks

Although there are many archaeological and ethnographic evidences for the use of slate and similar rocks for flaking purpose, they raised little interest among specialists, leading to a general ignorance of specific problems associated with these raw materials. Starting from the study of several Neolithic and Chalcolithic slate collections of the Western Iberia, the mechanical properties of slate and its impact on knapping process has been defined; subsequently, manufacturing and use of slate and phyllite projectiles have been undertaken. The results show that the ease with which these materials break into sheets of uniform thickness and morphology would provide an ideal basis for a fast and easy manufacture of arrowheads. In addition, these projectiles have shown a penetration capability and resistance statistically equivalent to those made on more standard materials (i.e. chalcedony or rock crystal). Therefore, slate and other rocks with a high degree of fissility would have been very attractive to prehistoric knappers endeavouring to make arrowheads.