The unique two-stage "Chinese path" of China’s ru-ral-urban migration, which cannot be fully explained by classical theories of economic development, makes us to give peasant workers’ transformation to urb...The unique two-stage "Chinese path" of China’s ru-ral-urban migration, which cannot be fully explained by classical theories of economic development, makes us to give peasant workers’ transformation to urban residents a top priority. On the basis of fully explaining peasant workers’ transformation to urban residents, a method for measuring its process has been advanced and then confirmed with the data of March in 2005 from surveys to peasant workers in Wuhan. Finally, the suggestions of acceler-ating peasant workers’ transformation to urban residents to pro-mote the construction of a harmonious society have been drawn from the analysis.展开更多
AIM:To study possible decrease in prevalence of Helicobacter pylori(H.pylori) infection in the Czech Republic within a 10-year period.METHODS:A total of 22 centres entered the study.The catchment areas of these centre...AIM:To study possible decrease in prevalence of Helicobacter pylori(H.pylori) infection in the Czech Republic within a 10-year period.METHODS:A total of 22 centres entered the study.The catchment areas of these centres covered cities and towns with more than 20 000 inhabitants,smaller towns(≤ 20 000 inhabitants) with surrounding villages and rural areas,and were spread over the whole country,corresponding well to the geographical distribution of the Czech population.A total of 1 837 subjects(aged 5-98 years) took part in the study,randomly selected out of 38 147 people from the general population.H.pylori infection was investigated by means of a 13 C-urea breath test.Breath samples in duplicates were analysed using isotope ratio mass spectrometry.The cut-off point was 3.5.Social and demographic characteristics were based on data from self-completed questionnaires.RESULTS:The overall prevalence of H.pylori infection was 23.5%(430/1826),and 4.8%(20/420) in children aged 15 or less.There was no statistically significant difference in prevalence between males(24.3%;208/857) and females(22.9%,222/969,P = 0.494).H.pylori infection was strongly associated with higher age,among subjects aged 55+ years,prevalence of H.pylori infection was 39.8%(252/633,P < 0.001).The highest prevalence of H.pylori infection was found among persons aged 55-64 years(43.9%,97/221) and 75+ years(37.9%,58/153).Among study subjects aged 15+ years,prevalence of H.pylori infection was significantly increased in those with lowest education(odds risk 3.19,95% CI 1.87-5.47).Compared to never married(14.1%),the prevalence of H.pylori infection was statistically significantly higher among married(35.4%,246/694,P < 0.001),divorced(36.8%,49/133,P < 0.001) and widowed study subjects(40.2%,45/112,P < 0.001),both in minimally and fully adjusted analysis.There was no significant difference in the prevalence of H.pylori infection between married and widowed subjects(35.4%,246/694 vs 40.2%,45/112,P = 0.389).There was little variation in smoking prevalence across categories of smoking and there was no evidence of an increased risk ofH.pylori infection among current or past smokers in our data(odds risk 1.04 with 95% CI 0.78-1.40 for current smokers;odds ratio 0.83 with 95% CI 0.60-1.16 for former smokers).The current prevalence of H.pylori in 2011 was significantly lower compared to the prevalence reported from identical geographical areas in 2001(23.5%vs 41.7%,P < 0.001).CONCLUSION:The overall prevalence of H.pylori infection in the general population has fallen substantially in the Czech Republic over the past 10 years.展开更多
Development of the city itself is a major reflection of the quality of urbanization; urbanization promote efficiency is the basic premise of urbanization; fair and coordinated urban-rural relation is the guarantee, an...Development of the city itself is a major reflection of the quality of urbanization; urbanization promote efficiency is the basic premise of urbanization; fair and coordinated urban-rural relation is the guarantee, and the goal of urbanization. Quality of urbanization contains its process and result, as well as efficiency and fairness. It also covers quality of not only urban and rural area, but also coordinated and interacted relations of them. Follow principles of being typical, systematic and operational, we can build quality evaluation system from the aspect of its develop level, efficiency and rural-and-urban coordination. Finally, we can choose proper measures to make reasonable assessment of urbanization in China, and improve the quality of urbanization by learning from others.展开更多
The construction of a new socialist countryside is a strategic focus of future economic and social development of our country, including the construction of rural power grids under the new urbanization and development...The construction of a new socialist countryside is a strategic focus of future economic and social development of our country, including the construction of rural power grids under the new urbanization and development, it has played a crucial role in supporting and promoting. Due to historical reasons, China has not yet formed a sound and sustainable development of rural power system and management system. In order to meet the requirements under the new urbanization of rural construction, we provide a solid foundation for the development of new rural construction, and long-term development of rural electricity has become an urgent need to study the issue. At present, the reform in the field of rural electrification, rural power enterprise management, rural power system and other existing research we have conducted a preliminary study, but overall, the research in this area is still in the exploratory stage, we need a more systematic and in-depth research and discussion.展开更多
Under the comprehensive deepening reform and promoting new urbanization,China launched a new round of reform of household registration system.Reform has a major breakthrough in five areas:to implement new urbanization...Under the comprehensive deepening reform and promoting new urbanization,China launched a new round of reform of household registration system.Reform has a major breakthrough in five areas:to implement new urbanization strategy of human-centric,to achieve equalization of basic public services gradually,to break up land rights and rural migrants,to provide protection for family migrants,and to increase financial support by governments.But the reform still faces many difficulties,how to determine the conditions settled by city size is difficult to implement effectively,financial transfer payment system reform is facing enormous diffi culties,as well as the size of the urban population is diffi cult to determine etc.展开更多
In the early 1990 s,China stepped into the stage of rapid urbanization with a flourishing economy and new technological development.Surplus labor from rural areas flooded into cities and became the main force of urban...In the early 1990 s,China stepped into the stage of rapid urbanization with a flourishing economy and new technological development.Surplus labor from rural areas flooded into cities and became the main force of urban development.However some severe threats to human survival emerged from urbanization,such as overextensive urban development,excessive resource consumption,ecological degradation,food security and safety risks and social crises.It has become an imperative to balance urban and rural development to achieve greater harmony between nature and society.This paper firstly tried to focus on public dietary change,agricultural industry development,institutional guarantee,ecological restoration,as well as cultural tourism in urban and peri-urban agricultural heritage sites.Then,it established a development model,balanced the urbanization and urban-supported agriculture.This paper proposed "Agricultural heritage systems" as an entry point for balancing the development of urban areas and rural areas.Agricultural heritage systems can inherit local traditional culture,keep the green and organic agriculture cultivation systems,exploit the distinct landscape tourism,and the like for diversified development;In addition,agricultural heritage systems can take full advantage of abundant funds,firm the institutional guarantee and advanced technologies from the nearby urban complex for regurgitation-feeding of rural enterprises.With the help of these strategies,we can achieve the harmony of "Ecological Urban" and "Garden Countryside".展开更多
To cope with the difficulties of integrating migrant workers into urban life and inefficient land use caused by conventional urbanization,China has proposed a new type of urbanization policy.This policy may have a sig...To cope with the difficulties of integrating migrant workers into urban life and inefficient land use caused by conventional urbanization,China has proposed a new type of urbanization policy.This policy may have a significant impact on the spatial patterns of rural settlements in China.Exploring this potential impact is conducive to the proposal of scientific plans for the spatial patterns of rural settlements.Therefore,this paper chooses Dingzhou,one of the pilot cities of this new-type urbanization,as the research area to carry out a simulation study on the impact of the new-type urbanization policy.Dingzhou has invested heavily in the new-type urbanization construction in recent years,but the influence of the policy on rural settlements remains unclear.Based on the theoretical framework of previous studies,this paper set up three scenarios,namely“conventional urbanization”,“new-type urbanization”,and“counter-urbanization”.This paper used FLUS(Future Land Use Simulation)Model and various spatial data to simulate the spatial patterns of rural settlements in Dingzhou in 2030 under the different scenarios.By comparing the different scenarios,the impacts of the new-type urbanization policy on the spatial patterns of rural settlements in Dingzhou were evaluated.The results indicated that:(1)From 2000 to 2015,the area of rural settlements in Dingzhou increased by 11.12%.Spatially,the density of rural settlements around the cities and towns increased,and rural settlement areas were mainly converted from cultivated land.Rural settlements were mainly transformed into urban land and cultivated land.(2)The overall simulation accuracy of FLUS was 0.89,so it can be well applied to the simulation of rural settlements.(3)In all three scenarios,rural settlements expanded along their edges,and the closer they were to towns,the more obvious the expansion was.In the counter-urbanization scenario,the change of rural settlements was most dramatic.(4)The new-type urbanization policy makes the spatial patterns of rural settlements in Dingzhou more stable and more intensive.展开更多
文摘The unique two-stage "Chinese path" of China’s ru-ral-urban migration, which cannot be fully explained by classical theories of economic development, makes us to give peasant workers’ transformation to urban residents a top priority. On the basis of fully explaining peasant workers’ transformation to urban residents, a method for measuring its process has been advanced and then confirmed with the data of March in 2005 from surveys to peasant workers in Wuhan. Finally, the suggestions of acceler-ating peasant workers’ transformation to urban residents to pro-mote the construction of a harmonious society have been drawn from the analysis.
基金Supported by Research Project PRVOUK P37-08 from Faculty of Medicine at Hradec Králové,Charles University in Praha,Czech Republic
文摘AIM:To study possible decrease in prevalence of Helicobacter pylori(H.pylori) infection in the Czech Republic within a 10-year period.METHODS:A total of 22 centres entered the study.The catchment areas of these centres covered cities and towns with more than 20 000 inhabitants,smaller towns(≤ 20 000 inhabitants) with surrounding villages and rural areas,and were spread over the whole country,corresponding well to the geographical distribution of the Czech population.A total of 1 837 subjects(aged 5-98 years) took part in the study,randomly selected out of 38 147 people from the general population.H.pylori infection was investigated by means of a 13 C-urea breath test.Breath samples in duplicates were analysed using isotope ratio mass spectrometry.The cut-off point was 3.5.Social and demographic characteristics were based on data from self-completed questionnaires.RESULTS:The overall prevalence of H.pylori infection was 23.5%(430/1826),and 4.8%(20/420) in children aged 15 or less.There was no statistically significant difference in prevalence between males(24.3%;208/857) and females(22.9%,222/969,P = 0.494).H.pylori infection was strongly associated with higher age,among subjects aged 55+ years,prevalence of H.pylori infection was 39.8%(252/633,P < 0.001).The highest prevalence of H.pylori infection was found among persons aged 55-64 years(43.9%,97/221) and 75+ years(37.9%,58/153).Among study subjects aged 15+ years,prevalence of H.pylori infection was significantly increased in those with lowest education(odds risk 3.19,95% CI 1.87-5.47).Compared to never married(14.1%),the prevalence of H.pylori infection was statistically significantly higher among married(35.4%,246/694,P < 0.001),divorced(36.8%,49/133,P < 0.001) and widowed study subjects(40.2%,45/112,P < 0.001),both in minimally and fully adjusted analysis.There was no significant difference in the prevalence of H.pylori infection between married and widowed subjects(35.4%,246/694 vs 40.2%,45/112,P = 0.389).There was little variation in smoking prevalence across categories of smoking and there was no evidence of an increased risk ofH.pylori infection among current or past smokers in our data(odds risk 1.04 with 95% CI 0.78-1.40 for current smokers;odds ratio 0.83 with 95% CI 0.60-1.16 for former smokers).The current prevalence of H.pylori in 2011 was significantly lower compared to the prevalence reported from identical geographical areas in 2001(23.5%vs 41.7%,P < 0.001).CONCLUSION:The overall prevalence of H.pylori infection in the general population has fallen substantially in the Czech Republic over the past 10 years.
文摘Development of the city itself is a major reflection of the quality of urbanization; urbanization promote efficiency is the basic premise of urbanization; fair and coordinated urban-rural relation is the guarantee, and the goal of urbanization. Quality of urbanization contains its process and result, as well as efficiency and fairness. It also covers quality of not only urban and rural area, but also coordinated and interacted relations of them. Follow principles of being typical, systematic and operational, we can build quality evaluation system from the aspect of its develop level, efficiency and rural-and-urban coordination. Finally, we can choose proper measures to make reasonable assessment of urbanization in China, and improve the quality of urbanization by learning from others.
文摘The construction of a new socialist countryside is a strategic focus of future economic and social development of our country, including the construction of rural power grids under the new urbanization and development, it has played a crucial role in supporting and promoting. Due to historical reasons, China has not yet formed a sound and sustainable development of rural power system and management system. In order to meet the requirements under the new urbanization of rural construction, we provide a solid foundation for the development of new rural construction, and long-term development of rural electricity has become an urgent need to study the issue. At present, the reform in the field of rural electrification, rural power enterprise management, rural power system and other existing research we have conducted a preliminary study, but overall, the research in this area is still in the exploratory stage, we need a more systematic and in-depth research and discussion.
文摘Under the comprehensive deepening reform and promoting new urbanization,China launched a new round of reform of household registration system.Reform has a major breakthrough in five areas:to implement new urbanization strategy of human-centric,to achieve equalization of basic public services gradually,to break up land rights and rural migrants,to provide protection for family migrants,and to increase financial support by governments.But the reform still faces many difficulties,how to determine the conditions settled by city size is difficult to implement effectively,financial transfer payment system reform is facing enormous diffi culties,as well as the size of the urban population is diffi cult to determine etc.
基金The International Exchange and Cooperation Project of Ministry of Agriculture“Conservation of Globally Important Agricultural Heritage Systems(GIAHS)in China in 2016”The Youth Talent Supporting Project of China Association for Science and Technology(2016010103)
文摘In the early 1990 s,China stepped into the stage of rapid urbanization with a flourishing economy and new technological development.Surplus labor from rural areas flooded into cities and became the main force of urban development.However some severe threats to human survival emerged from urbanization,such as overextensive urban development,excessive resource consumption,ecological degradation,food security and safety risks and social crises.It has become an imperative to balance urban and rural development to achieve greater harmony between nature and society.This paper firstly tried to focus on public dietary change,agricultural industry development,institutional guarantee,ecological restoration,as well as cultural tourism in urban and peri-urban agricultural heritage sites.Then,it established a development model,balanced the urbanization and urban-supported agriculture.This paper proposed "Agricultural heritage systems" as an entry point for balancing the development of urban areas and rural areas.Agricultural heritage systems can inherit local traditional culture,keep the green and organic agriculture cultivation systems,exploit the distinct landscape tourism,and the like for diversified development;In addition,agricultural heritage systems can take full advantage of abundant funds,firm the institutional guarantee and advanced technologies from the nearby urban complex for regurgitation-feeding of rural enterprises.With the help of these strategies,we can achieve the harmony of "Ecological Urban" and "Garden Countryside".
基金The National Natural Science Foundation of China(41771576)。
文摘To cope with the difficulties of integrating migrant workers into urban life and inefficient land use caused by conventional urbanization,China has proposed a new type of urbanization policy.This policy may have a significant impact on the spatial patterns of rural settlements in China.Exploring this potential impact is conducive to the proposal of scientific plans for the spatial patterns of rural settlements.Therefore,this paper chooses Dingzhou,one of the pilot cities of this new-type urbanization,as the research area to carry out a simulation study on the impact of the new-type urbanization policy.Dingzhou has invested heavily in the new-type urbanization construction in recent years,but the influence of the policy on rural settlements remains unclear.Based on the theoretical framework of previous studies,this paper set up three scenarios,namely“conventional urbanization”,“new-type urbanization”,and“counter-urbanization”.This paper used FLUS(Future Land Use Simulation)Model and various spatial data to simulate the spatial patterns of rural settlements in Dingzhou in 2030 under the different scenarios.By comparing the different scenarios,the impacts of the new-type urbanization policy on the spatial patterns of rural settlements in Dingzhou were evaluated.The results indicated that:(1)From 2000 to 2015,the area of rural settlements in Dingzhou increased by 11.12%.Spatially,the density of rural settlements around the cities and towns increased,and rural settlement areas were mainly converted from cultivated land.Rural settlements were mainly transformed into urban land and cultivated land.(2)The overall simulation accuracy of FLUS was 0.89,so it can be well applied to the simulation of rural settlements.(3)In all three scenarios,rural settlements expanded along their edges,and the closer they were to towns,the more obvious the expansion was.In the counter-urbanization scenario,the change of rural settlements was most dramatic.(4)The new-type urbanization policy makes the spatial patterns of rural settlements in Dingzhou more stable and more intensive.