With rapid urbanization process, the pace of urban sprawl has been quickened and most metropolises have ex-perienced expansions in leaps and bounds in suburbanization, which has greatly changed the urban and rural spa...With rapid urbanization process, the pace of urban sprawl has been quickened and most metropolises have ex-perienced expansions in leaps and bounds in suburbanization, which has greatly changed the urban and rural spatial struc-ture of the metropolis fringe area. In this paper, Shuangliu County is taken as a case, since it is a typical fringe area of Chengdu Metropolis. Based on Landsat TM images of Chengdu City and Shuangliu County obtained in 1985, 2000 and 2004, characteristics of urban and rural spatial structure in Shuangliu County were analyzed, such as core-periphery spa-tial structure and some obvious integration trends. Then the influencing factors for the formation of urban and rural spatial structure were identified, including some natural, social, economic and political factors. According to the discussion of this paper, Shuangliu County is undergoing a key transition and reform period. Its formation of urban and rural spatial structure was affected not only by such common factors as the location, natural background, industrial transition, migra-tion, etc., but also by some unique factors such as city planning and policy guidance, which played an important role in accelerating its uneven spatial structure. The understanding of the role of the influencing factors would be useful for car-rying out spatial management and development planning of metropolis fringe area.展开更多
Heart of Darkness is one of the masterpieces of Joseph Conrad （1857-1924）, which shows the author＇s great humanity and his unreserved horror at the crimes committed by the colonists and imperialists all over the wo...Heart of Darkness is one of the masterpieces of Joseph Conrad （1857-1924）, which shows the author＇s great humanity and his unreserved horror at the crimes committed by the colonists and imperialists all over the world. This thesis tries to analyze its three themes： the Colonists＇ material essence, the dark side of human nature, and the disillusionment of civilization. Kurtz, the main character in the novel, is characterized by his greed for material gain and power. The dark side of human nature is reflected in Kurtz＇s cruel behavior towards the natives, his sense of superiority to the marginalized, and his dominance in discourse over the colonial people. Along with the colonists＇ crazy behaviors, there is disillusion with the modem civilization.展开更多
In this paper,spatial correlation of crop yield in the middle and west of Jilin Province is analyzed by us-ing the method of geostatistics semivariogram,taking the NDVI of NOAA/AVHRR spectrum data as the regionalized ...In this paper,spatial correlation of crop yield in the middle and west of Jilin Province is analyzed by us-ing the method of geostatistics semivariogram,taking the NDVI of NOAA/AVHRR spectrum data as the regionalized vari-able,aiming to provide theory and practical basis for field sampling of crop yield estimation using remote sensing.The ratio of nugget variance and sill of semivariograms are 21.1% and 9.7% in the west and middle regions in Jilin Province respectively.This shows that the crop yields are spatially correlated.The degree and range of correlation are far different in the different situations.In the west test region,the range is 49.9 km and the sill is 0.00019.In the middle testre-gion,the range is 16.5 km and the sill is0.00453.The dissimilarity in the western test region is larger than that in the middle one.The range in which the correlation existed of the former is far larger than the later.Different character is tics of spatial correlation of crop yield are decided by the environmental factors.Samples for crop yield estimation should be extracted according to the characteristic of spatial distribution of crop yield to promote the efficiency of sampling.展开更多
In his book Out of Control, Brzezinski speaks about a vacuum in Eurasia, with important geopolitical consequences. Which are the new challenges and risks on the Silk Road in the time of globalization, radicalization, ...In his book Out of Control, Brzezinski speaks about a vacuum in Eurasia, with important geopolitical consequences. Which are the new challenges and risks on the Silk Road in the time of globalization, radicalization, and freedom of movement？ The paper will stress three challenges： the project ＂Economic zone on the Silk Road＂ （the leadership in economic performance is held by China and therefore the eastern political cultures have the necessary economic basis for asserting their independence）, the influence of ETIM and IMU on the region and the role and place of Xinjiang, as a bridge between Central and South Asia; how they reflected on this way of old traditions and cultures and whether there is a ＂clash＂ between the Eastern religions on the ＂Silk Road＂ and Islam with its multi dimensions, between the thick black chador and the silk veil, called ＂tissue of wind＂, between spiritual, transcendental cognition （Daoism） and pragmatic mundane faith of Islam. I will conclude that the new challenges on the Silk Road create new borders between people--religious, linguistic, ethnical, and new identities. The main question is as follows： Shall we keep the cultural plurality and authenticity of the region？展开更多
Built environments are undergoing a state of crisis, due to fragmentation and obsolescence： consolidated urban areas, suburbs and fringe areas require to be restored so as to recover a sense of vivid places and to av...Built environments are undergoing a state of crisis, due to fragmentation and obsolescence： consolidated urban areas, suburbs and fringe areas require to be restored so as to recover a sense of vivid places and to avoid segregation. Fabric of routes and voids can be considered as a medium in order to structure a landscape, to manage and govern a region, to nurture its unique subculture. A structure of bonds is to be designed to promote a rapid and safe movement of resources, of people, of ideas, even from and to most remote sites. Infrastructure can foster a vast economic development, and also, a profound social and cultural development.展开更多
We investigated the geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin to better understand their cause.The structural situation,the hydrocarbon accumulation m...We investigated the geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin to better understand their cause.The structural situation,the hydrocarbon accumulation mechanism and unsuccessful well data collected from 1996 to 2005 were studied.The results show that the main geological factors associated with unsuccessful exploration wells are a lack of effective source rocks and a lack of effective traps,as well as the migration-accumulation conditions that exist in this area.The basin was reformed by Meso-Cenozoic tectonic evolution.Multi-stage tectonic activities have both positive and negative effects on hydrocarbon accumulation.Source rocks distribution,effective migration channels,effective traps and the tectonic evolution effects on hydrocarbons should be the key objects for further studies.展开更多
With sulfide increasingly recognized as an important parameter to assess the oxidation-reduction level in aqueous enviromnent, research on its geochemical behavior is becoming important. Water samples collected in Boh...With sulfide increasingly recognized as an important parameter to assess the oxidation-reduction level in aqueous enviromnent, research on its geochemical behavior is becoming important. Water samples collected in Bohai Sea （1-19 August, 2010）, Yellow Sea （20-30 November, 2010） and East China Sea （3-17 June, 2010 and 1-10 November, 2010） were used to determine the occurrence and distribution of dissolved sulfide by methylene blue spectrophotometric method. Results show that： （1） horizontally, concentration of dissolved sulfide significantly varied from the coastal region to the open sea and profoundly influenced by physical processes. High values occurred in the river-sea boundary zone ＂marginal filter＂ due to rich riverine input, frequent upwelling and active exchange in shelf edge. Terrestrial input from adjacent rivers and the current cycling contributed to the high sulfide appeared in western Bohai Sea, eastern Shandong Peninsula, and northeast of Changjiang （Yangtze） River estuary. Especially, relative higher sulfide values occurred in Yellow Sea, which is consistent with the variation of salinity largely due to the hydrodynamic feature; （2） vertically, measurement of dissolved sulfide in bottom water was higher and more variable than that in surface water caused by the wind-induced resuspension and dissimilatory sulfate reduction. Moreover, nutrient-type profile clearly identified that oxidation plays a major role in the biogeochemistry cycle of sulfide in water; （3） seasonally, investigation for East China Sea in June and November reflected seasonal variation of Changjiang River Diluted Water, Kuroshio Current, and Taiwan Warm Current. Concentration in June was much higher than that sampled in November at most stations. Mean concentration of dissolved sulfide varied seasonally from 2.26 μg/L （June） to 1.16 μg/L （November） in surface and 3.00 μg/L （June） to 1.56 μg/L （November） in bottom. Progress in the field is slow and more effort is needed to ensure the accuracy and reliability of determination and estimate the natural or anthropogenic contribution of dissolved sulfide in ecosystems.展开更多
Since the second half of the 20th century and especially during the 21st century, world industrialization has experienced a series of historic changes. Although geopolitical changes triggered by political incidents su...Since the second half of the 20th century and especially during the 21st century, world industrialization has experienced a series of historic changes. Although geopolitical changes triggered by political incidents such as the USSR＇s disintegration have played a significant role, the geographical shift of world industrialization has first and foremost been caused by the tipping of the balance of international economic and industrial development. China＇s rise has become a massive engine driving this Eastward transition. Due to its impressive rapidity, China＇s industrialization is often referred to as ＂compressed industrialization ＂： completion of a long journey in a very short period of time. Chinese industrialization also features many distinctive characteristics that contrast with those of many other countries. Currently, China is in a critical stage of industrial development, moving towards world-class advanced manufacturing. Industrialization is a historic period of economic and social restructuring that is often accompanied by various structural imbalances. It is essentially a process of civilization＇s progress. China＇s industrialization is in many ways consistent with Western industrial and technological development, but remains subject to the profound influence of Chinese civilization. China＇s industrialization features unique differences that are deeply rooted in its institutional systems. After 30years of brilliant achievements, reform of China＇s economic andpolitical systems has once again come into the spotlight of public attention.展开更多
基金Under the auspices of National Natural Science Foundation of China (No 40571056)
文摘With rapid urbanization process, the pace of urban sprawl has been quickened and most metropolises have ex-perienced expansions in leaps and bounds in suburbanization, which has greatly changed the urban and rural spatial struc-ture of the metropolis fringe area. In this paper, Shuangliu County is taken as a case, since it is a typical fringe area of Chengdu Metropolis. Based on Landsat TM images of Chengdu City and Shuangliu County obtained in 1985, 2000 and 2004, characteristics of urban and rural spatial structure in Shuangliu County were analyzed, such as core-periphery spa-tial structure and some obvious integration trends. Then the influencing factors for the formation of urban and rural spatial structure were identified, including some natural, social, economic and political factors. According to the discussion of this paper, Shuangliu County is undergoing a key transition and reform period. Its formation of urban and rural spatial structure was affected not only by such common factors as the location, natural background, industrial transition, migra-tion, etc., but also by some unique factors such as city planning and policy guidance, which played an important role in accelerating its uneven spatial structure. The understanding of the role of the influencing factors would be useful for car-rying out spatial management and development planning of metropolis fringe area.
文摘Heart of Darkness is one of the masterpieces of Joseph Conrad （1857-1924）, which shows the author＇s great humanity and his unreserved horror at the crimes committed by the colonists and imperialists all over the world. This thesis tries to analyze its three themes： the Colonists＇ material essence, the dark side of human nature, and the disillusionment of civilization. Kurtz, the main character in the novel, is characterized by his greed for material gain and power. The dark side of human nature is reflected in Kurtz＇s cruel behavior towards the natives, his sense of superiority to the marginalized, and his dominance in discourse over the colonial people. Along with the colonists＇ crazy behaviors, there is disillusion with the modem civilization.
文摘In this paper,spatial correlation of crop yield in the middle and west of Jilin Province is analyzed by us-ing the method of geostatistics semivariogram,taking the NDVI of NOAA/AVHRR spectrum data as the regionalized vari-able,aiming to provide theory and practical basis for field sampling of crop yield estimation using remote sensing.The ratio of nugget variance and sill of semivariograms are 21.1% and 9.7% in the west and middle regions in Jilin Province respectively.This shows that the crop yields are spatially correlated.The degree and range of correlation are far different in the different situations.In the west test region,the range is 49.9 km and the sill is 0.00019.In the middle testre-gion,the range is 16.5 km and the sill is0.00453.The dissimilarity in the western test region is larger than that in the middle one.The range in which the correlation existed of the former is far larger than the later.Different character is tics of spatial correlation of crop yield are decided by the environmental factors.Samples for crop yield estimation should be extracted according to the characteristic of spatial distribution of crop yield to promote the efficiency of sampling.
文摘In his book Out of Control, Brzezinski speaks about a vacuum in Eurasia, with important geopolitical consequences. Which are the new challenges and risks on the Silk Road in the time of globalization, radicalization, and freedom of movement？ The paper will stress three challenges： the project ＂Economic zone on the Silk Road＂ （the leadership in economic performance is held by China and therefore the eastern political cultures have the necessary economic basis for asserting their independence）, the influence of ETIM and IMU on the region and the role and place of Xinjiang, as a bridge between Central and South Asia; how they reflected on this way of old traditions and cultures and whether there is a ＂clash＂ between the Eastern religions on the ＂Silk Road＂ and Islam with its multi dimensions, between the thick black chador and the silk veil, called ＂tissue of wind＂, between spiritual, transcendental cognition （Daoism） and pragmatic mundane faith of Islam. I will conclude that the new challenges on the Silk Road create new borders between people--religious, linguistic, ethnical, and new identities. The main question is as follows： Shall we keep the cultural plurality and authenticity of the region？
文摘Built environments are undergoing a state of crisis, due to fragmentation and obsolescence： consolidated urban areas, suburbs and fringe areas require to be restored so as to recover a sense of vivid places and to avoid segregation. Fabric of routes and voids can be considered as a medium in order to structure a landscape, to manage and govern a region, to nurture its unique subculture. A structure of bonds is to be designed to promote a rapid and safe movement of resources, of people, of ideas, even from and to most remote sites. Infrastructure can foster a vast economic development, and also, a profound social and cultural development.
基金Project XQ-2004-01 supported by the National Oil Project of China
文摘We investigated the geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin to better understand their cause.The structural situation,the hydrocarbon accumulation mechanism and unsuccessful well data collected from 1996 to 2005 were studied.The results show that the main geological factors associated with unsuccessful exploration wells are a lack of effective source rocks and a lack of effective traps,as well as the migration-accumulation conditions that exist in this area.The basin was reformed by Meso-Cenozoic tectonic evolution.Multi-stage tectonic activities have both positive and negative effects on hydrocarbon accumulation.Source rocks distribution,effective migration channels,effective traps and the tectonic evolution effects on hydrocarbons should be the key objects for further studies.
基金Supported by the National Natural Science Foundation of China(Nos.41121064,41306055)the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA05030402)the National Basic Research Program of China(973 Program)(No.2011CB403602)
文摘With sulfide increasingly recognized as an important parameter to assess the oxidation-reduction level in aqueous enviromnent, research on its geochemical behavior is becoming important. Water samples collected in Bohai Sea （1-19 August, 2010）, Yellow Sea （20-30 November, 2010） and East China Sea （3-17 June, 2010 and 1-10 November, 2010） were used to determine the occurrence and distribution of dissolved sulfide by methylene blue spectrophotometric method. Results show that： （1） horizontally, concentration of dissolved sulfide significantly varied from the coastal region to the open sea and profoundly influenced by physical processes. High values occurred in the river-sea boundary zone ＂marginal filter＂ due to rich riverine input, frequent upwelling and active exchange in shelf edge. Terrestrial input from adjacent rivers and the current cycling contributed to the high sulfide appeared in western Bohai Sea, eastern Shandong Peninsula, and northeast of Changjiang （Yangtze） River estuary. Especially, relative higher sulfide values occurred in Yellow Sea, which is consistent with the variation of salinity largely due to the hydrodynamic feature; （2） vertically, measurement of dissolved sulfide in bottom water was higher and more variable than that in surface water caused by the wind-induced resuspension and dissimilatory sulfate reduction. Moreover, nutrient-type profile clearly identified that oxidation plays a major role in the biogeochemistry cycle of sulfide in water; （3） seasonally, investigation for East China Sea in June and November reflected seasonal variation of Changjiang River Diluted Water, Kuroshio Current, and Taiwan Warm Current. Concentration in June was much higher than that sampled in November at most stations. Mean concentration of dissolved sulfide varied seasonally from 2.26 μg/L （June） to 1.16 μg/L （November） in surface and 3.00 μg/L （June） to 1.56 μg/L （November） in bottom. Progress in the field is slow and more effort is needed to ensure the accuracy and reliability of determination and estimate the natural or anthropogenic contribution of dissolved sulfide in ecosystems.
文摘Since the second half of the 20th century and especially during the 21st century, world industrialization has experienced a series of historic changes. Although geopolitical changes triggered by political incidents such as the USSR＇s disintegration have played a significant role, the geographical shift of world industrialization has first and foremost been caused by the tipping of the balance of international economic and industrial development. China＇s rise has become a massive engine driving this Eastward transition. Due to its impressive rapidity, China＇s industrialization is often referred to as ＂compressed industrialization ＂： completion of a long journey in a very short period of time. Chinese industrialization also features many distinctive characteristics that contrast with those of many other countries. Currently, China is in a critical stage of industrial development, moving towards world-class advanced manufacturing. Industrialization is a historic period of economic and social restructuring that is often accompanied by various structural imbalances. It is essentially a process of civilization＇s progress. China＇s industrialization is in many ways consistent with Western industrial and technological development, but remains subject to the profound influence of Chinese civilization. China＇s industrialization features unique differences that are deeply rooted in its institutional systems. After 30years of brilliant achievements, reform of China＇s economic andpolitical systems has once again come into the spotlight of public attention.
