Urban areas and its evolution are important anthropogenic indicators and human ecological footprints, and play decisive roles in environmental change analysis, global geo-conditional monitoring, and sustainable develo...Urban areas and its evolution are important anthropogenic indicators and human ecological footprints, and play decisive roles in environmental change analysis, global geo-conditional monitoring, and sustainable development. China has the highest rate of urban expansion and has emerged as an urban expansion hotspot worldwide. In this paper, the progress of studies on Chinese urban expansion based on remote sensing technology are summarized and analyzed from the aspects of urban area definition, remotely sensed imagery applied in urban expansion, monitoring methods of urban expansion, and urban expansion applications. Existing issues and future directions of Chinese urban expansion are discussed and proposed. Results indicate that: 1) The fusion of multi-source remotely sensed imagery is imperative to meet the needs of urban expansion with various monitoring terms and frequencies on different scales and dimensions. 2) To guarantee the classification accuracy and efficiency and describe urban expansion and its influences on local land use simultaneously, the combination of visual interpretation and automatic classification is the tendency of future monitoring methods of urban areas. 3) Urban expansion data have become the prerequisite for recognizing the urban development process, excavating its driving forces, simulating and predicting the future development directions, and also is conducive to revealing and explaining urban ecological and environmental issues. 4) In the past decades, Chinese scholars have promoted the application of remote sensing technology in the urban expansion field, with data construction, methods and models developing from the quotation stage to improvement and innovation stage; however, an independent and consistent urban expansion data on the national scale with long-term and high-frequency(such as annual monitoring) monitoring is still lacking.展开更多
GENERAL INFORMATION World Journal of Gastroenterology(World J Gastroenterol ISSN1007-9327 CN14-1219/R)is a weekly open-access(OA)peer-reviewed journal supported by an editorial board consisting of 1179 experts in gast...GENERAL INFORMATION World Journal of Gastroenterology(World J Gastroenterol ISSN1007-9327 CN14-1219/R)is a weekly open-access(OA)peer-reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.展开更多
GENERAL INFORMATION World Journal of Gastroenterology (World J Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer-reviewed journal supported by an editorial board consisting of 1179 experts i...GENERAL INFORMATION World Journal of Gastroenterology (World J Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer-reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.展开更多
GENERAL INFORMATIONWorld Journal of Gastroenterology (World J Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer-reviewed journal supported by an editorial board consisting of 1179 experts in...GENERAL INFORMATIONWorld Journal of Gastroenterology (World J Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer-reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.展开更多
World Jowrnal of Gastrenkrology (World) Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology...World Jowrnal of Gastrenkrology (World) Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.展开更多
Michel Houellebecq is perhaps the most successful, the most famous and controversial of all current novelists writing in French. He has become a global publishing phenomenon: His books have been translated worldwide,...Michel Houellebecq is perhaps the most successful, the most famous and controversial of all current novelists writing in French. He has become a global publishing phenomenon: His books have been translated worldwide, film adaptations of his novels have been produced, and the author is the subject of a million-euro publishing deals and successive media scandals in France. The novels depict surprising forms of imaginary resources, a radiating end of the world, a post-nuclear anxiety, and depressive characters. Houellebecq shocks us leaving us in a world where the feelings of love, tenderness and goodwill have disappeared. The purpose of Houellebecq's novels is to alert about the real problems of the human society in the twenty-first century. Indeed, in the books we can easily recognize the essential features of contemporary society and the fact that the individual assumes a dehumanization process in which one has to cope with his solitude in a world of emptiness. This socio-cultural dimension is indeed the background of Houellebecq's novels, novels in which the protagonists seem to be wedged in a mechanism from which it is difficult to escape: reification and dehumanization on the one hand, "robotization" of love on the other. This article focuses on the analysis of the texts revealing the poignant characteristics of"L'Ere du vide" ("The Era of Emptiness") as described by Gilles Lipovetsky: Loneliness, the lack of love and its replacement by sexual relations.展开更多
基金Under the auspices of National Major Science and Technology Program for Water Pollution Contro and Treatment(No.2017ZX07101001)International Partnership Program of Chinese Academy of Sciences(No.131C11KYSB20160061)
文摘Urban areas and its evolution are important anthropogenic indicators and human ecological footprints, and play decisive roles in environmental change analysis, global geo-conditional monitoring, and sustainable development. China has the highest rate of urban expansion and has emerged as an urban expansion hotspot worldwide. In this paper, the progress of studies on Chinese urban expansion based on remote sensing technology are summarized and analyzed from the aspects of urban area definition, remotely sensed imagery applied in urban expansion, monitoring methods of urban expansion, and urban expansion applications. Existing issues and future directions of Chinese urban expansion are discussed and proposed. Results indicate that: 1) The fusion of multi-source remotely sensed imagery is imperative to meet the needs of urban expansion with various monitoring terms and frequencies on different scales and dimensions. 2) To guarantee the classification accuracy and efficiency and describe urban expansion and its influences on local land use simultaneously, the combination of visual interpretation and automatic classification is the tendency of future monitoring methods of urban areas. 3) Urban expansion data have become the prerequisite for recognizing the urban development process, excavating its driving forces, simulating and predicting the future development directions, and also is conducive to revealing and explaining urban ecological and environmental issues. 4) In the past decades, Chinese scholars have promoted the application of remote sensing technology in the urban expansion field, with data construction, methods and models developing from the quotation stage to improvement and innovation stage; however, an independent and consistent urban expansion data on the national scale with long-term and high-frequency(such as annual monitoring) monitoring is still lacking.
文摘GENERAL INFORMATION World Journal of Gastroenterology(World J Gastroenterol ISSN1007-9327 CN14-1219/R)is a weekly open-access(OA)peer-reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.
文摘GENERAL INFORMATION World Journal of Gastroenterology (World J Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer-reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.
文摘GENERAL INFORMATIONWorld Journal of Gastroenterology (World J Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer-reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.
文摘World Jowrnal of Gastrenkrology (World) Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries.
文摘Michel Houellebecq is perhaps the most successful, the most famous and controversial of all current novelists writing in French. He has become a global publishing phenomenon: His books have been translated worldwide, film adaptations of his novels have been produced, and the author is the subject of a million-euro publishing deals and successive media scandals in France. The novels depict surprising forms of imaginary resources, a radiating end of the world, a post-nuclear anxiety, and depressive characters. Houellebecq shocks us leaving us in a world where the feelings of love, tenderness and goodwill have disappeared. The purpose of Houellebecq's novels is to alert about the real problems of the human society in the twenty-first century. Indeed, in the books we can easily recognize the essential features of contemporary society and the fact that the individual assumes a dehumanization process in which one has to cope with his solitude in a world of emptiness. This socio-cultural dimension is indeed the background of Houellebecq's novels, novels in which the protagonists seem to be wedged in a mechanism from which it is difficult to escape: reification and dehumanization on the one hand, "robotization" of love on the other. This article focuses on the analysis of the texts revealing the poignant characteristics of"L'Ere du vide" ("The Era of Emptiness") as described by Gilles Lipovetsky: Loneliness, the lack of love and its replacement by sexual relations.