期刊文献+
共找到5,910篇文章
< 1 2 250 >
每页显示 20 50 100
Impact of an official accountability audit on industrial structure adjustment:a case study of environmental regulation in China
1
作者 Yu Xia 《Chinese Journal of Population,Resources and Environment》 2024年第2期167-175,共9页
As a unique environmental regulation in China,the official accountability audit was piloted in 2014.With a focus on prioritizing the ecological environment,officials in pilot districts have implemented economic constr... As a unique environmental regulation in China,the official accountability audit was piloted in 2014.With a focus on prioritizing the ecological environment,officials in pilot districts have implemented economic construction,adjusted industrial structures,and promoted coordinated development between the economy and environment.The effects of implementation have garnered widespread attention from society.However,there is limited research on the impact of an accountability audit on industrial structure adjustments.Using the“Accountability Audit of Officials for Natural Resource Assets(Trial)”released in 2015 as a quasi-natural experiment,this study collected panel data from 279 cities between 2013 and 2017.It then empirically analyzed the impact mechanism and effects of the accountability audit on industrial structure adjustment using the Propensity Score Matching and Difference-in-Differences model.The research findings indicate that the accountability audit directly impacted industrial structure adjustment,promoting the upgrading of the primary industry to the secondary industry and restricting the development of the tertiary industry.In addition,the audit is beneficial for enterprise entry,but not conducive to technological innovation,and has no significant impact on foreign direct investment.This conclusion fills a gap in the existing research and provides valuable insights for policymakers. 展开更多
关键词 Accountability audit Difference-in-differences model Environmental regulation Industrial structure adjustment Quasi-natural experiment
下载PDF
Adjustment of Administrative Divisions and Upgrading of Industrial Structure in Hefei Metropolitan Area:Taking"Partitions of Chaohu"as a Quasi-natural Experiment
2
作者 Yumin DING 《Asian Agricultural Research》 2024年第7期19-23,27,共6页
Administrative regions are an important environment for the operation of China's market economy.The relevant economic subjects cannot predict the policy of adjustment of administrative divisions and carry out cons... Administrative regions are an important environment for the operation of China's market economy.The relevant economic subjects cannot predict the policy of adjustment of administrative divisions and carry out conscious migration behavior,adjustment of administrative divisions can be regarded as a quasi-natural experiment.The three cities of Hefei,Wuhu,and Ma'anshan,which are directly related to the adjustment of the administrative division of Chaohu,are taken as the treatment group,and the seven adjacent cities of Lu'an,Huainan,Chuzhou,Bengbu,Anqing,Chizhou,and Tongling are taken as the control group.Differences-in-Differences method and relevant control variables affecting the upgrading of industrial structure are used to test.The test results show that"Partitions of Chaohu"has a significant industrial structure upgrading effect by promoting the optimization of spatial layout,the cross-regional flow of production factors and the effective management of Chaohu Lake Basin.At the same time,the increase of total retail sales of consumer goods,urban fixed assets investment,public utility expenses in science,education,culture and health,and population plays a significant positive role in promoting the upgrading of industrial structure,while foreign direct investment plays a certain inhibition role in the upgrading of industrial structure.In order to meet the ever-developing space demands and enhance the impact on surrounding areas,the Hefei metropolitan area should be driven by technological innovation,strengthen the integration of industrial chains,improve the business environment and transportation network,and continuously promote the upgrading of industrial structure and the formation and development of new productive forces. 展开更多
关键词 adjustment of administrative divisions Upgrading of industrial structure Hefei metropolitan area Quasi-natural experiment
下载PDF
Emergy Efficiency and Structural Adjustment of Hunan Agro-ecosystem
3
作者 侯茂章 朱玉林 《Agricultural Science & Technology》 CAS 2012年第12期2648-2654,共7页
[Objective] To analyze the efficiency of Hunan agro-ecosystem in 1980- 2010. [Method] This paper adopts the emergy methods to evaluate the emergy input and output. [Result] The growth of total emergy input was mainly ... [Objective] To analyze the efficiency of Hunan agro-ecosystem in 1980- 2010. [Method] This paper adopts the emergy methods to evaluate the emergy input and output. [Result] The growth of total emergy input was mainly caused by the auxiliary factors in this phase. The proportion of the nonrenewable purchased emergy input to the total auxiliary emergy input increased from 21.80% in 1980 to 33.04% in 2010. In 1980-2010 the total emergy output of the system increased by 2.43 times, the proportions of the stock farming emergy output and fishery emergy output to the total emergy output increased sharply, while those of the planting emergy output and forestry emergy output showed a considerable decline. [Conclusion] The emergy yield ratio of this system was improved but its sustainability was worrying. 展开更多
关键词 Emergy input Emergy output AGRO-ECOSYSTEM Emergy yield ratio structural adjustment
下载PDF
Initial pre-stress finding procedure and structural performance research for Levy cable dome based on linear adjustment theory 被引量:4
4
作者 ZHANG Li-mei CHEN Wu-jun DONG Shi-lin 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2007年第9期1366-1372,共7页
The cable-strut structural system is statically and kinematically indeterminate. The initial pre-stress is a key factor for determining the shape and load carrying capacity. A new numerical algorithm is presented here... The cable-strut structural system is statically and kinematically indeterminate. The initial pre-stress is a key factor for determining the shape and load carrying capacity. A new numerical algorithm is presented herein for the initial pre-stress finding procedure of complete cable-strut assembly. This method is based on the linear adjustment theory and does not take into account the material behavior. By using this method,the initial pre-stress of the multi self-stress modes can be found easily and the cal-culation process is simplified and efficient also. Finally,the initial pre-stress and structural performances of a particular Levy cable dome are analyzed comprehensively. The algorithm has proven to be efficient and correct,and the numerical results are valuable for practical design of Levy cable dome. 展开更多
关键词 Linear adjustment theory Cable-strut structure Initial pre-stress Levy cable dome structural performances analysis
下载PDF
Initial Pre-stress Finding and Structural Behaviors Analysis of Cable Net Based on Linear Adjustment Theory 被引量:4
5
作者 任涛 陈务军 付功义 《Journal of Shanghai Jiaotong university(Science)》 EI 2008年第2期155-160,共6页
The tensile cable-strut structure is a self-equilibrate pre-stressed system.The initial pre-stress cal- culation is the fundamental structural analysis.A new numerical procedure was developed.The force density method ... The tensile cable-strut structure is a self-equilibrate pre-stressed system.The initial pre-stress cal- culation is the fundamental structural analysis.A new numerical procedure was developed.The force density method is the cornerstone of analytical formula,and then introduced into linear adjustment theory;the least square least norm solution,the optimized initial pre-stress,is yielded.The initial pre-stress and structural performances of a particular single-layer saddle-shaped cable-net structure were analyzed with the developed method,which is proved to be efficient and correct.The modal analyses were performed with respect to various pre-stress levels.Finally,the structural performances were investigated comprehensively. 展开更多
关键词 linear adjustment theory tensile cable-net structure initial pre-stress single-layer saddle-shaped cable net structural performances analysis
下载PDF
A SIMULTANEOUS APPROACH TO WATER - RESOURCE PROTECTION AND ECONOMIC STRUCTURAL ADJUSTMENT—A Case Study of Guanzhong Region in the Huanghe River Basin, China 被引量:1
6
作者 WANGXi-qin LIUChang-ming 《Chinese Geographical Science》 SCIE CSCD 2002年第1期35-43,共9页
A regional multiple objective water resource and economic optimization model was developed using a quantitative method of systematic analysis. Input to the model includes indexes of economic structure and development,... A regional multiple objective water resource and economic optimization model was developed using a quantitative method of systematic analysis. Input to the model includes indexes of economic structure and development, water resource utilization, wastewater and pollutant discharge, and investment in wastewater treatment. The model, which consists of production structure and industrial structure optimization modules, was applied to the Guanzhong region in the middle reaches of the Huanghe (Yellow) River basin in China. By evaluating several alternative production and industrialization schemes, the modal indicate that water pollution will get worsen though wastewater treatment improves if the economy continues to develop at the planned speed without structural adjustment. However, the results also show that not only economic goals but also water resource protection and pollution control targets can be achieved under an alternative, recommended production and industrial structure. This example illustrates that economic development and environmental protection can be improved coordinately by the regional multiple objective water resource and economic optimization model. It provides an operable approach to the simultaneous sustained development of water resources and economic growth. 展开更多
关键词 water resource PROTECTION economic structure adjustment
下载PDF
Structural Adjustment of Oasis Agriculture in Xinjiang
7
作者 Lei Jun1,2 & Zhang Xiaolei1 1 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences,Urumqi 830011,China 2 Institute of Geography Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101.China 《Chinese Journal of Population,Resources and Environment》 北大核心 2005年第3期29-33,共5页
Xinjiang’s oasis agriculture has made enormous strides over past decades. Structural adjustment of oasis agriculture sector has promoted production diversification. Xinjiang’s oasis agriculture sector is entering a ... Xinjiang’s oasis agriculture has made enormous strides over past decades. Structural adjustment of oasis agriculture sector has promoted production diversification. Xinjiang’s oasis agriculture sector is entering a new era. The era means more adjustments in oasis agricultural and rural economic structure so as to realize the sustainable development of agriculture. By summing and analyzing the main problems in Xinjinag’s oasis agricultural structure, such as raising farmer’s income, industry structure within agriculture, rural urbanization, pressure coming from market, agricultural environment degradation, puts forward the thinking, director and countermeasures to adjust oasis agricultural structure. 展开更多
关键词 oasis agriculture structural adjustment agricultural industrialization XINJIANG
下载PDF
The Need for Structural Adjustment: Was It Essential for African Countries over the Decade of the 80’s? An Econometric Analysis Using Count Data Models
8
作者 Samuel Ambapour 《Open Journal of Statistics》 2017年第4期599-607,共9页
Several economists agree to say that the need for adjustment was essential for African countries over the decade of the 80’s. The econometric analysis of a sample of 28 sub-Saharan African countries, from variables r... Several economists agree to say that the need for adjustment was essential for African countries over the decade of the 80’s. The econometric analysis of a sample of 28 sub-Saharan African countries, from variables regarded as “representatives” for the adjustment objectives, proves that this assertion cannot be completely rejected. 展开更多
关键词 structural adjustment COUNT Models POISSON MODEL Negative BINOMIAL MODEL
下载PDF
PetroChina accelerating implementation of restructuring strategy; downstream business experiencing structural adjustment smoothly
9
《China Oil & Gas》 CAS 2000年第4期20-21,共2页
关键词 PetroChina accelerating implementation of restructuring strategy downstream business experiencing structural adjustment smoothly
下载PDF
Agricultural Production Structure Adjustment Scheme Evaluation and Selection Based on DEA Model for Punjab(Pakistan) 被引量:3
10
作者 Zeeshan Ahmad Meng Jun 《Journal of Northeast Agricultural University(English Edition)》 CAS 2015年第2期87-91,共5页
DEA is a nonparametric method used in operation researches and economics fields for the evaluation of the production frontier. It has distinct intrinsic which is worth coping with assessment problems with multiple inp... DEA is a nonparametric method used in operation researches and economics fields for the evaluation of the production frontier. It has distinct intrinsic which is worth coping with assessment problems with multiple inputs in particular with multiple outputs. This paper used D~ C2 R model of DEA to assess the comparative efficiency of the multiple schemes of agricultural industrial structure, at the end we chose the most favorable also known as "OPTIMAL" scheme. In addition to this, using some functional insights from DEA model non optimal schemes or less optimal schemes had also been improved to some extent. Assessment and selection of optimal schemes of agricultural industrial structure using DEA model gave a greater and better insight of agricultural industrial structure and was the first of such researches in Pakistan. 展开更多
关键词 agricultural industrial structure adjustment agricultural production structure linear programming DEA PUNJAB
下载PDF
Assessment on Different Schemes of Industrial Structure Adjustment Based on DEA 被引量:2
11
作者 FULi-fang MENGJun 《Journal of Northeast Agricultural University(English Edition)》 CAS 2004年第1期93-96,共4页
DEA is a new research field in operations research. It has unique virtues in dealing with assessment problem with multi-inputs especially multi-outputs. In this paper, DEA model of D?着C2R has been applied to evaluate... DEA is a new research field in operations research. It has unique virtues in dealing with assessment problem with multi-inputs especially multi-outputs. In this paper, DEA model of D?着C2R has been applied to evaluate the relative efficiency of several different schemes of industrial structure adjustment of agriculture and finally select the optimal scheme. Furthermore, the inferior scheme has been improved according to some useful insights got from DEA model. 展开更多
关键词 industrial structure adjustment of agriculture DEA DEA efficient
下载PDF
Optimal Scheme Selection of Agricultural Production Structure Adjustment——Based on DEA Model; Punjab(Pakistan) 被引量:1
12
作者 Zeeshan Ahmad Meng Jun +3 位作者 Muhammad Abdullah Mazhar Nadeem Ishaq Majid Lateef Imran Khan 《Journal of Northeast Agricultural University(English Edition)》 CAS 2015年第4期48-52,共5页
This paper used the modern evaluation method of DEA (Data Envelopment Analysis) to assess the comparative efficiency and then on the basis of this among multiple schemes chose the optimal scheme of agricultural prod... This paper used the modern evaluation method of DEA (Data Envelopment Analysis) to assess the comparative efficiency and then on the basis of this among multiple schemes chose the optimal scheme of agricultural production structure adjustment. Based on the results of DEA model, we dissected scale advantages of each discretionary scheme or plan. We examined scale advantages of each discretionary scheme, tested profoundly a definitive purpose behind not-DEA efficient, which elucidated the system and methodology to enhance these discretionary plans. At the end, another method had been proposed to rank and select the optimal scheme. The research was important to guide the practice if the modification of agricultural production industrial structure was carded on. 展开更多
关键词 agricultural industrial structure adjustment agricultural production structure DEA efficient DMU's ranking PUNJAB
下载PDF
Evaluation and Selection of the Optimal Scheme of Industrial Structure Adjustment Based on DEA 被引量:1
13
作者 FU Lifang GE Jiaqi MENG Jun 《Journal of Northeast Agricultural University(English Edition)》 CAS 2006年第1期69-72,共4页
in the paper, the advanced assessment method of DEA (Date Envelopment Analysis) had been used to evaluate relative efficiency and select the optimal scheme of agricultural industrial structure adjustment. According ... in the paper, the advanced assessment method of DEA (Date Envelopment Analysis) had been used to evaluate relative efficiency and select the optimal scheme of agricultural industrial structure adjustment. According to the results of DEA models, we analyzed scale benefits of every optional schemes, probed deeply the ultimate reason for not DEA efficient, which clarified the method and approach to improve these optional schemes. Finally, a new method had been proposed to rank and select the optimal scheme. The research is significant to direct the practice of the adjustment of agricultural industrial structure. 展开更多
关键词 adjustment of industrial structure DEA efficient ranking of DMUs
下载PDF
Study of the Optimization and Adjustment ofthe IndustrialStructure Subjected to Water Resource in the Drainage Area of the Yellow River 被引量:1
14
作者 Wang Haiying, Fan Zhenjun, Hou Xiaoli, Dong SuochengInstitute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China 《Chinese Journal of Population,Resources and Environment》 2004年第1期48-53,共6页
Since the 1990s, the Yellow River stream has been temporarily interrupted for several years, which affects the development of society, the economy and human life, limits the economic potential of the drainage areas, a... Since the 1990s, the Yellow River stream has been temporarily interrupted for several years, which affects the development of society, the economy and human life, limits the economic potential of the drainage areas, and especially causes great harm to regions on the lower reaches. Based on the analysis of the relationship between the development of society and economy and water scarcity, the author thinks it is necessary to optimize and adjust the industrial structure that has extravagantly consumed enormous amounts of water, and to develop ecological agriculture, industry and tourism which are balanced with the ecological environment. Finally, the author puts forward several pieces of advice and countermeasures about how to build the economic systems by which water can be used economically. 展开更多
关键词 drainage areas of the Yellow River water scarcity industrial structure optimize and adjust
下载PDF
Areal differentiation of virtual water for agricultural products and its effect on regional agricultural structure adjustment in China: 1995-2007 被引量:3
15
作者 QIN Li-jie ZONG Sheng-wei CHANG Yong-zhi 《Ecological Economy》 2010年第1期80-87,共8页
With a vast territory, the space-time distribution of water resources is uneven in China. There is a great dif ference in natural conditions and farmland management of agricuttural production in different regions. The... With a vast territory, the space-time distribution of water resources is uneven in China. There is a great dif ference in natural conditions and farmland management of agricuttural production in different regions. The areal differentiation of agricultural products virtual water is obvious. Comparison with the agricultural products virtual water from 1995 to 2007 in China shows an increase in the first ten vears and a little decrease in recent years. There has been a tendency of increase all the time in Northeast and Northwest. but a decrease after an increase firstly in other regions. The virtual water offood crops is the maximum which accounts for more than 70% in China. and that of vegetables is in a fast growth. The proportion of agricultural products virtual water to the total water resources in each region has a large difference, showing the imbalance of agricultural water in different regions, which accounts for 50%-90% in Northeast, and 125%-185% in North China. Under the guidance of virtual water strategy, based on the differences of resource endowment, each region should adjust agricultural structure, decide production by water, and select water suitable crops. In water-rich region, agricultural produets of high water consumption should be planted appropriately, which will make full use of the abundant local water resources. In water-shortage region the crop production of high water consumption and low efficiency should be depressed, and that of low water consumption and high efficiency should be supported and increased. It will achieve reasonable disposition of water resources, promote ecological restoration and environmental protection, as welt as ensure food security. 展开更多
关键词 Virtual water Areal differentiation adjustment of agricultural structure
下载PDF
Structural and Regulating Characteristics of Adjustable Annulus-clearance Nozzle Used in Supercritical Fluid Precipitation
16
作者 曲延鹏 刘燕 +2 位作者 LIU Songming WANG Weiqiang LI Aiju 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2017年第6期1487-1492,共6页
A new type of adjustable nozzle with an annulus clearance between the surfaces of a revolved solid and the matched hole was analyzed, which contained matching parts, regulating parts, guiding elements, and sealing par... A new type of adjustable nozzle with an annulus clearance between the surfaces of a revolved solid and the matched hole was analyzed, which contained matching parts, regulating parts, guiding elements, and sealing part. The general regulating function of the adjustable nozzle was derived and the regulating and matching characteristics were also analyzed. Through the analysis, it was concluded that the matching-profile curve of either the revolved body or matched hole should be chosen as a straight line in order to keep the linear regulating feature. Moreover, the multi-annulus-clearance nozzle was designed, and some experiments were carried out on preparing budesonide particles with the nozzle. According to the experimental results, it was proved that the annulus nozzles is practical in preparing micro-particles by supercritical fluid precipitation method. 展开更多
关键词 annulus-clearance nozzle adjustable structure regulating characteristics conic matching supercritical fluid precipitation
下载PDF
Analysis on Relationship between Adjustment of Agricultural Structure and Urbanization Development
17
作者 Jinhua TANG Yinghui LI +2 位作者 Hongxia LI Yilin LIU Gangqiang CHEN 《Asian Agricultural Research》 2014年第1期1-5,13,共6页
As a part of certain region,agricultural development has inevitable connection with regional urbanization,and they are highly heterogeneous and complementary in space. Their internal relationship is manifested as agri... As a part of certain region,agricultural development has inevitable connection with regional urbanization,and they are highly heterogeneous and complementary in space. Their internal relationship is manifested as agricultural structure suits demand of urbanization development through adjustment in the process of urbanization,while urbanization is based on development of regional agriculture. From history of world agriculture and urbanization development,agriculture firstly provides primitive accumulation for urbanization development,and drives regional urbanization through promoting agricultural development. When urbanization develops to certain stage,urbanization accumulation increases and reaches the goal of " boosting urbanization through agriculture". If urbanization develops slowly,agricultural adjustment will lack motive force. On the contrary,weak agricultural development will lead to stagnation of urbanization. Therefore,adjustment of agricultural structure and urbanization development are interconnected,mutually promoted and restricted,and interdependent. 展开更多
关键词 adjustment of AGRICULTURAL structurE URBANIZATION
下载PDF
Adjustment of Land Use Structure Based on County-wide Economic Development: A Case Study of Changfeng County
18
作者 Zeping HE Zhongxiang YU 《Asian Agricultural Research》 2015年第5期29-32,共4页
On the basis of survey of current land use situation in Changfeng County,this paper analyzed land use structure,trend and environment of structural adjustment. Besides,it explored county-wide land use structure mode,n... On the basis of survey of current land use situation in Changfeng County,this paper analyzed land use structure,trend and environment of structural adjustment. Besides,it explored county-wide land use structure mode,namely, " division + indicator + policy". Through reasonable distribution,it is expected to build proper land use structure framework,avoid passive situation of relying on policies simply,and bring into play stability keeping function of land use structure,so as to promote county-wide economic development,and bring into play countywide lever function of rural transition areas. 展开更多
关键词 County-wide ECONOMY LAND USE structure adjustment
下载PDF
Analysis on Internal Growth Potential of Agriculture Under the Agricultural Structure Adjustment in Xinjiang
19
作者 Conghua TIAN Hong SHEN Jian DAI 《Asian Agricultural Research》 2013年第9期29-31,共3页
Agricultural structure adjustment has always been the important factors influencing Xinjiang agricultural internal income growth.On the basis of the planting scale,productivity and price in 2010,the paper measured the... Agricultural structure adjustment has always been the important factors influencing Xinjiang agricultural internal income growth.On the basis of the planting scale,productivity and price in 2010,the paper measured the contributions made by agricultural structure adjustment to Xinjiang agricultural internal income growth through structural optimization.Linear programming model was established by Lingo software,to optimize the structure of planting,horticulture,animal husbandry in Xinjiang and analyze the internal agricultural income growth potential.After structure optimization,Xinjiang agricultural production value will reach 1231.44×108yuan and the farmers'income of production and management will reach 9851yuan.The greatest potential for Xinjiang agricultural internal income growth was husbandry accounting for 41.33% of the total production value.The next one was horticulture,whose share of the total production value has raised to 17.43% from 10%.Fruit industry and animal husbandry will become the pillars of future income growth.There are still some income growth spaces in Xinjiang internal agriculture though the agricultural structure adjustment.The agricultural production value will increase by 44.32%and farmers'production and management income will increase by 68.83%.That will be one of the most important ways to tap the future potential of agriculture internal income growth. 展开更多
关键词 XINJIANG AGRICULTURAL structurE adjustment Interna
下载PDF
Investigation on the Concurrent-Business Behavior of Peasant Households during the Planting Structure Adjustment in Karst Mountainous Area
20
作者 CHEN Qun-li YOU Yong HU Li 《Asian Agricultural Research》 2011年第1期60-64,共5页
Based on the survey data of 150 peasant households in typical Karst mountainous area in the year 2009, causations, characteristics and influence factors of the concurrent-business behavior of peasant households during... Based on the survey data of 150 peasant households in typical Karst mountainous area in the year 2009, causations, characteristics and influence factors of the concurrent-business behavior of peasant households during planting structure adjustment are analyzed. Result shows that there is significant positive correlation between the concurrent-business income and the household income of farmers. And the concurrent-business behavior has the tendency to be popular among the young farmers with the characteristics of relative concentration, strong will of farmers and the significant impact of education degree on the concurrent-business income. Information, capital, skill, and market awareness are the main factors affecting the concurrent-business behavior of peasant households. Countermeasures to optimize the concurrent-business behavior of peasant households are put forward, such as strengthening the skills training for farmers to improve the cultural quality of peasant households, establishing modern rural financial service system to offer capital support for the development of peasant households, setting up information base of rural labor force to provide more information and channels for the concurrent-business behavior of peasant households, and enhancing the cultivation of farmers' market awareness to improve their ability to adapt to market economy. 展开更多
关键词 Karst mountainous area Planting structure adjustment Concurrent-business behavior of peasant households China
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部