Historical desertification of the Mu Us Sandy Land is linked to both environmental changes and anthropogenic activities. This paper reports on an analysis of grain size parameters as indicative of such changes in the ...Historical desertification of the Mu Us Sandy Land is linked to both environmental changes and anthropogenic activities. This paper reports on an analysis of grain size parameters as indicative of such changes in the southwestern area of the Mu Us Sandy Land. Combined with analysis of chronologies and historical records, our results indicate that Beidachi Lake and a nearby season- al river have retreated continuously in history and that sand dunes appeared at approximately the end of the Ming dynasty. This study sheds new light on the understanding of spatial-temporal changes of the interior Mu Us Sandy Land in history and has great significance in revealing environmental changes of the interior region of the Mu Us Sandy Land.展开更多
Sara Jeannette Duncan(1861-1922)is a prominent Canadian female writer in her time.Her novel The Imperialist(1904),dealing primarily with Canadian nationality,is a sophisticated epitome of Canadian society that is most...Sara Jeannette Duncan(1861-1922)is a prominent Canadian female writer in her time.Her novel The Imperialist(1904),dealing primarily with Canadian nationality,is a sophisticated epitome of Canadian society that is most authentic to Canadian social and political life at the turn of the twentieth century.The Imperialist,as a product of a historical context in Canadian literature,incorporates historical reality and fictional imagination,and presents an uncertainty and perplexity in the ideology of Canadians at the turn of the twentieth century.Positioning The Imperialist in the context of New Historicism,this essay explores the intertextuality of the“historicity of texts”and the“textuality of history”.Furthermore,the essay investigates the circulation between literary text of The Imperialist and non-literary texts that surrounded it,revealing how literary text and historical-cultural context negotiate,circulate,and construct each other.展开更多
Text extraction is an important initial step in digitizing the historical documents. In this paper, we present a text extraction method for historical Tibetan document images based on block projections. The task of te...Text extraction is an important initial step in digitizing the historical documents. In this paper, we present a text extraction method for historical Tibetan document images based on block projections. The task of text extraction is considered as text area detection and location problem. The images are divided equally into blocks and the blocks are filtered by the information of the categories of connected components and corner point density. By analyzing the filtered blocks' projections, the approximate text areas can be located, and the text regions are extracted. Experiments on the dataset of historical Tibetan documents demonstrate the effectiveness of the proposed method.展开更多
基金supported by National Natural Science Foundation of China (41101187)the Specialized Research Fund for the Doctoral Program of Higher Education (20100211120006)+2 种基金the Ministry of Education, Humanities and Social Science Projects (10YJCZH053)the Fundamental Research Funds for the Central Universities (LZUJBKY-2012-136)the National Science Foundation for Post-Doctoral Scientists of China (2012M512051)
文摘Historical desertification of the Mu Us Sandy Land is linked to both environmental changes and anthropogenic activities. This paper reports on an analysis of grain size parameters as indicative of such changes in the southwestern area of the Mu Us Sandy Land. Combined with analysis of chronologies and historical records, our results indicate that Beidachi Lake and a nearby season- al river have retreated continuously in history and that sand dunes appeared at approximately the end of the Ming dynasty. This study sheds new light on the understanding of spatial-temporal changes of the interior Mu Us Sandy Land in history and has great significance in revealing environmental changes of the interior region of the Mu Us Sandy Land.
文摘Sara Jeannette Duncan(1861-1922)is a prominent Canadian female writer in her time.Her novel The Imperialist(1904),dealing primarily with Canadian nationality,is a sophisticated epitome of Canadian society that is most authentic to Canadian social and political life at the turn of the twentieth century.The Imperialist,as a product of a historical context in Canadian literature,incorporates historical reality and fictional imagination,and presents an uncertainty and perplexity in the ideology of Canadians at the turn of the twentieth century.Positioning The Imperialist in the context of New Historicism,this essay explores the intertextuality of the“historicity of texts”and the“textuality of history”.Furthermore,the essay investigates the circulation between literary text of The Imperialist and non-literary texts that surrounded it,revealing how literary text and historical-cultural context negotiate,circulate,and construct each other.
基金supported by the Innovation Platform Construction of Qinghai Province(No.2016-ZJ-Y04)the Basic Research Program of Qinghai Province(No.2016-ZJ-740)
文摘Text extraction is an important initial step in digitizing the historical documents. In this paper, we present a text extraction method for historical Tibetan document images based on block projections. The task of text extraction is considered as text area detection and location problem. The images are divided equally into blocks and the blocks are filtered by the information of the categories of connected components and corner point density. By analyzing the filtered blocks' projections, the approximate text areas can be located, and the text regions are extracted. Experiments on the dataset of historical Tibetan documents demonstrate the effectiveness of the proposed method.
