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住宅区光伏并网两阶段能源交易模式与投产分析
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作者 闫秀英 刘盼 +1 位作者 常娟 闫秀联 《太阳能学报》 EI CAS CSCD 北大核心 2024年第10期309-316,共8页
针对如何实现居民侧与电网侧的友好互动问题,建立并网两阶段优化模型。第一阶段以住宅区用户用电成本最低为优化目标,第二阶段以加入光伏-储能并网运行下平均回本年限最短为优化目标。首先利用概率统计思想简化多用户调度模型,将其等效... 针对如何实现居民侧与电网侧的友好互动问题,建立并网两阶段优化模型。第一阶段以住宅区用户用电成本最低为优化目标,第二阶段以加入光伏-储能并网运行下平均回本年限最短为优化目标。首先利用概率统计思想简化多用户调度模型,将其等效为4类特征用户调度之和,采用PSO算法进行求解,其次提出一种住宅区家庭能源管理系统以及能源交易模式,并对该交易模式进行投产分析。算例分析结果表明,住宅区并网两阶段优化模型调度系统可有效降峰调谷,节约用电成本。 展开更多
关键词 能源管理 光伏 储能 能源交易 投产分析
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产业扶持政策投产效率分析路径探析 被引量:1
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作者 张超 巩智利 《财政监督》 2023年第17期43-46,共4页
产业是支撑国家、地区经济发展的核心与基础。作为推动产业高质量发展的重要手段,产业扶持政策在实施过程中普遍存在一系列问题。同时,产业扶持政策绩效评价在一定程度上也缺乏科学的评价手段和方法,进而影响评价效果,需进一步探寻合适... 产业是支撑国家、地区经济发展的核心与基础。作为推动产业高质量发展的重要手段,产业扶持政策在实施过程中普遍存在一系列问题。同时,产业扶持政策绩效评价在一定程度上也缺乏科学的评价手段和方法,进而影响评价效果,需进一步探寻合适的绩效分析路径,以突破政策绩效评价的工作瓶颈。本文梳理总结了产业扶持政策绩效评价的三个分析维度和两个分析层次,以X省A市产业扶持政策绩效评价为例,详细呈现了产业扶持政策绩效评价的重点,对产业扶持政策投入与产出间效率分析路径进行探索,为产业扶持政策绩效分析开拓思路。 展开更多
关键词 产业扶持政策 投产效率分析 政策绩效评价
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济齐天然气管道通球干燥与置换投产过程分析 被引量:6
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作者 汪春付 《油气储运》 CAS 北大核心 2003年第10期57-59,共3页
结合济南—齐鲁天然气管道投产要求和实际施工环境 ,对两种天然气管道整体干燥、置换方案进行了比较分析。采用甲醇 +氮气的干燥、置换工艺 ,依靠甲醇干燥管道 ,采用氮气置换空气、天然气置换氮气的方法 ,通过在四个清管器之间分别注入... 结合济南—齐鲁天然气管道投产要求和实际施工环境 ,对两种天然气管道整体干燥、置换方案进行了比较分析。采用甲醇 +氮气的干燥、置换工艺 ,依靠甲醇干燥管道 ,采用氮气置换空气、天然气置换氮气的方法 ,通过在四个清管器之间分别注入一定量氮气、甲醇、氮气和天然气的方式 ,实现管道一次性干燥与置换。介绍了该工艺在管道干燥与置换过程中的具体实施情况 ,给出了甲醇实际注入量的计算方法 。 展开更多
关键词 天然气管道 干燥 投产分析 氮气置换
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Cyclical fluctuations of real estate investment across regions in urban China
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作者 王延树 成虎 徐鹏富 《Journal of Southeast University(English Edition)》 EI CAS 2008年第2期228-233,共6页
Taking the concrete conditions of each region into full consideration, the Chinese real estate market is divided into an eastern market, a central market and a western market. For each market, the autoregressive integ... Taking the concrete conditions of each region into full consideration, the Chinese real estate market is divided into an eastern market, a central market and a western market. For each market, the autoregressive integrated moving average (ARMA) model is established and spectral analysis is carded out to better understand the changes in the real estate markets in each region. The results show the investment levels and several kinds of cycles within each market. The level of real estate investment (LREI)in the eastern region is the higiaest, and the short cycle of investment is about 4 to 5 years; the LREI in the central region is in the middle, and the short cycle of investment is about 2 to 3 years; the LREI in the western region has been rapidly increasing in recent years, and the short cycle of investment is about 4 to 5 years. Real estate investment in each area has reached a peak and completed a middle-cycle movement after a period of sustained recession and an upsurge process, which has taken about 9 to 10 years. 展开更多
关键词 real estate investment ARMA model spectral analysis cycle of investment
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Agricultural Development of Nanjing Suburban Counties based on Contribution Models of Production Factors
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作者 李响 张琤琤 +1 位作者 李睿婷 许才明 《Agricultural Science & Technology》 CAS 2012年第12期2663-2666,共4页
According to data in Nanjing Statistical Yearbook, contribution made by agricultural production factors was analyzed with contribution models of agricultural factors and the results showed that with restriction of lab... According to data in Nanjing Statistical Yearbook, contribution made by agricultural production factors was analyzed with contribution models of agricultural factors and the results showed that with restriction of labor force and land, Nanjing suburban counties have entered into a stage of "high input-high output", considering no matter from agricultural total value of output or from agricultural added value. In future, structure configuration of agricultural input factors should be optimized in Nanjing suburban counties by technology input to improve agricultural technology and technical efficiency in order to further achieve sustainable development of agriculture. 展开更多
关键词 Nanjing suburban counties Agricultural output Input factors Contribution analysis
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Agricultural Input and Output in Jiangsu Province with Case Analysis
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作者 杜华章 《Agricultural Science & Technology》 CAS 2014年第11期2006-2010,2025,共6页
[Objective] The aim was to explore interrelationship between agricultural input and output in Jiangsu and the influence degrees of input factors on agricultur-al output. [Method] Quantitative analysis and evaluation w... [Objective] The aim was to explore interrelationship between agricultural input and output in Jiangsu and the influence degrees of input factors on agricultur-al output. [Method] Quantitative analysis and evaluation were made on agricultural input and output in Jiangsu during 1990-2012 as per factor analysis and regression analysis. [Result] The result of factor analysis showed that since the 1990s, the comprehensive efficiency of agricultural input/output in Jiangsu was growing and in-put/output of agriculture, forestry, animal husbandry and fishery, crop farming, and of food production were extracted, whose scores reflect the changes of input/output ef-ficiencies in terms of agriculture, forestry, animal husbandry, fishery, crop farming and food production in the two decades. The results of regression analysis indicated that the effects of the three indices on agricultural output tended to be volatile and the influence degrees were concluded also by regression parameters. [Conclusion] The research provides theoretical references for agricultural input/output structure in Jiangsu Province. 展开更多
关键词 Agriculture Input/output Factor analysis Regression analysis Jiangsu Province
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SOLVABILITY RESULTS OF A CONDITIONAL INPUT-OUTPUT EQUATION BASED ON A TYPE OF NONLINEAR LEONTIEF MODEL
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作者 胡问鸣 刘颖范 沙春林 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2003年第2期224-229,共6页
A class of nonlinear and continuous type Leontief model and its corresponding conditional input-output equation are introduced, and two basic problems under the so called positive or negative boundary assumption are p... A class of nonlinear and continuous type Leontief model and its corresponding conditional input-output equation are introduced, and two basic problems under the so called positive or negative boundary assumption are presented. By approaches of nonlinear analysis some solvability results of this equation and continuous perturbation properties of the relative solution sets are obtained, and some economic significance are illustrated by the remark. 展开更多
关键词 conditional Leontief model input-output equation positive (negative) boundary assumption nonlinear analysis SOLVABILITY continuous disturbance
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China’s Export Expansion, Export Structure and Energy Consumption 被引量:1
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作者 Lan Yisheng Ning Xuemin 《Chinese Journal of Population,Resources and Environment》 2011年第3期77-85,共9页
Since the reform and opening up,China's export trade has maintained a rapid growth;meanwhile,China's energy consumption has been increasing sharply. "High export and high energy consumption" has beco... Since the reform and opening up,China's export trade has maintained a rapid growth;meanwhile,China's energy consumption has been increasing sharply. "High export and high energy consumption" has become the feature of China's trade and economic development.In this paper,based on the input-output analysis approach,the authors have conducted an empirical study on the export trade and energy consumption of 21 trade industrial sectors.The results show that,China is a big net exporter of embodied energy.Assuming that the export growth rate of embodied energy maintains to be about 23.6%,the average annual growth rate of the past 32 years,and based on the input-output data of 2005,by 2030 China's net export of embodied energy would be over eight times more than the aggregate energy production,which is obviously infeasible.As a country of very low per capita energy,China must change its export pattern,encourage or restrain the export of different industrial sectors according to their energy consumption intensity,and promote structural change of energy-efficient exported products,so as to achieve the sustainable development.Accordingly,the authors put forward some suggestions. 展开更多
关键词 export trade embodied energy input-output analysis sustainable development
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Investment Risks of Agricultural Listed Companies from Visual Angle of Natural Disasters 被引量:1
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作者 Qu Xiang Sun Nengli Zhang Junbiao 《Chinese Journal of Population,Resources and Environment》 北大核心 2008年第2期3-7,共5页
The essential feature of agriculture is the interweave- ment of natural reproduction and economic reproduction.In recent years,the natural disasters have become more frequent and badly affect the production management... The essential feature of agriculture is the interweave- ment of natural reproduction and economic reproduction.In recent years,the natural disasters have become more frequent and badly affect the production management and investment benefits.This problem has been an important risk in managing agricultural listed companies and cannot be ignored.It is of great importance to evaluate and prevent the risks of the natural disasters to enhance the competitive ability and increase the profits of those listed companies,thereby keeping the sustainable development of agri- cultural companies. 展开更多
关键词 agricultural listed companies risks of natural disasters investment risks risk evaluation
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Impact of Removal of City Gas Subsidies on Chinese Urban Residents 被引量:1
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作者 廖华 朱治双 王璐 《Transactions of Tianjin University》 EI CAS 2012年第4期309-314,共6页
The current cost-plus natural gas pricing mechanism makes the gas price too low,resulting in a lot of consumer-side subsidies and over-consumed natural gas.This paper applies the price-gap approach and input-output an... The current cost-plus natural gas pricing mechanism makes the gas price too low,resulting in a lot of consumer-side subsidies and over-consumed natural gas.This paper applies the price-gap approach and input-output analysis technology to quantitatively analyze both the direct and indirect effects on urban residents under the condition that natural gas subsidies are cancelled in China in 2007.It is shown that the gas price will increase by 33.3%-41.6%,and the residential consumption expenditure by 0.26%-0.33%.The low-income groups are mostly affected,so different subsidies should be implemented to make subsidies more efficient. 展开更多
关键词 price subsidies price-gap approach input-output analysis technology
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Empirically Analysis of the CO_2 Emissions Embodied in Exports of China 被引量:1
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作者 Zhu Qirong 《Chinese Journal of Population,Resources and Environment》 2011年第3期86-96,共11页
In this paper,using the input-output model,the author first calculated the CO 2 emissions embodied in exports of China in 2002 and 2007.Then,the author empirically analyzed problems existing in the composition of expo... In this paper,using the input-output model,the author first calculated the CO 2 emissions embodied in exports of China in 2002 and 2007.Then,the author empirically analyzed problems existing in the composition of exported products and analyzed its possible reasons.The research results of this paper are as follows:Since China's entry into WTO,the CO 2 emissions embodied in exports of China have been increasing rapidly;the value of exported products of high-carbon emissions industries accounts for a relatively higher proportion to China's total exports value because China's carbon intensive products have a certain competitive advantage.Additionally,this paper has put forward relevant suggestions based on these results. 展开更多
关键词 EXPORTS CO2 emissions carbon intensive prod-ucts inputoutput model
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Input-Output Analysis of the Impact of Environmental Regulation on Chinese Industries
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作者 董敏杰 梁泳梅 《China Economist》 2011年第4期40-52,共13页
In this paper, we attempted to calculate the impact of environmental regulation on the international competitiveness of China's industries. Calculations are based on the input-output model that incorporates pollution... In this paper, we attempted to calculate the impact of environmental regulation on the international competitiveness of China's industries. Calculations are based on the input-output model that incorporates pollution control costs. We took enterprises 'pollution control costs as the substitute variable for environmental regulation and price changes to measure the impact on international competitiveness for all sectors. Our studies reported three findings. First, price rises caused by pollution control costs were not more than 4 per cent in the manufacturing and trade sectors in 2007. Second, although the charging rate on pollutant discharge has become increasingly higher since 2003, the resultant price rise is only around O. 5 per cent across all sectors. Third, the impact brought about by increasingly stronger environmental regulation is limited and the resultant price rise does not exceed 2 per cent. Thesefindings indicate that the impact of environmental regulation on China's trade sectors is affordable. Therefore, it is needless to worry that environmental regulation will weaken the international competitiveness of Chinese products. 展开更多
关键词 environmental regulation input-output model price level exportcompetitiveness
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The Driving Forces of CO2 Emission in China: 2002-2007
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作者 Libo Yuan Yinchuan Xu 《Chinese Business Review》 2013年第4期298-304,共7页
This paper provides a computation on both the China's aggregate CO2 emission volume and the emission of each sector over the period of 2002-2007, based on the input-output analysis. Further analysis is also given on ... This paper provides a computation on both the China's aggregate CO2 emission volume and the emission of each sector over the period of 2002-2007, based on the input-output analysis. Further analysis is also given on the various determinants of the change in the emission volume, with the aid of structural decomposition analysis (SDA) based on a residual-free method. Based on the input-output table of China in 2002 and 2007, the merge of sectors and the adjustment of price change have been made during the study. The emissions of carbon dioxide in China increased from 2,887.3 million ton to 5,664.6 million ton during 2002-2007. The average rate of increase is 13.3%, faster than the average rate of gross domestic product (GDP) growth 11.6% slightly. According to the process of SDA, the changes in emission are analyzed in terms of four different factors. Among the four factors studied in the paper, it is found that the change of emission intensity and structure of demand are the main reason of the decrease of emission, while production technology and scale effect increase the emission volume. The paper also finds that although the direct emission intensity decreased during the study period, the total emission intensity increased with the annual rate of 3.8%, which reflects the result of energy policy is not equal in different sectors. 展开更多
关键词 carbon emissions input-output table hybrid units structural decomposition analysis trading structure emission intensity
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Grey analysis of the relationship between grain output and major input factor in Guizhou Province:1983-2005 被引量:2
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作者 Fan Jiangang 《Ecological Economy》 2007年第3期257-265,共9页
Because conditions for the grain production are not favorable and the input in the production factors ofmodern agriculture is not sufficient, the grain supply has been less than the demand for a long time. By means of... Because conditions for the grain production are not favorable and the input in the production factors ofmodern agriculture is not sufficient, the grain supply has been less than the demand for a long time. By means of greycorrelation analysis, this paper deals with the correlation situation among such input factors as the grain sown area, thetotal power of agricultural machinery, the fertilizer utilization volume, the actual irrigation area, the damage area, thenumber of farming labor force, in order to understand the major restricting and driving forces that have affected thegrain output in the recent 23 years. The analysis shows that the grain sown area and fertilizer utilization volume are thetwo most important leading factors that affect grain production in Guizhou Province, while the damage area and the totalpower of the farming-used machines are the following factors. Fertilizer utilization volume and the actual agriculturalmachinery and irrigation area are the two increasingly influential factors that affect grain production. The influence of thefarming labor force upon grain production became less strong. The main measures to increase grain production outputin Guizhou Province are to stabilize the arable land, increase the actual irrigation area, expedite the transfer of thefarming labor force and increase the input of modern agriculture. 展开更多
关键词 Grey correlation analysis Grain production GUIZHOU Input factors
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Life Cycle Input-Output Analysis Extended to Use, Disposal, and Recycling Stages Applied to Embodied CO2 Emissions of a Refrigerator
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作者 Yuki Mizumoto Yohji Uchiyama Keiichi Okajima 《Journal of Energy and Power Engineering》 2013年第4期695-704,共10页
Input-output analysis is widely employed to analyze inventories of a product's embodied energy and environmental burdens. However, input-output analysis focuses only on the production stage and ignores other life cyc... Input-output analysis is widely employed to analyze inventories of a product's embodied energy and environmental burdens. However, input-output analysis focuses only on the production stage and ignores other life cycle phases. Input-output analysis is not exactly a LCA (life cycle assessment) method in the strict sense of ISO 14040 standards, which must cover all stages of a product's life cycle, "from the cradle to the grave", so to speak. A tiered hybrid LCA is a useful tool that covers all life cycle stages by combining a process analysis with the input-output analysis method. This study aims to extend input-output analysis to the use, disposal, and recycling stages by using matrix-based method. The new method is applied to the analysis of the embodied CO2 emissions of a refrigerator as a case study. The entire life cycle C02 emissions are estimated to be 2.9 tons, including indirect emissions, and the reduction in CO2 emissions due to recycling steel scrap is calculated as 48.5 kg. The authors conclude that the new method enables a consistent inventory analysis for all life cycle stages by combining process and input-output methods. 展开更多
关键词 Input-output analysis matrix-based method hybrid lifecycle analysis RECYCLING REFRIGERATOR CO2 emission.
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Analysis of Real estate investment structure optimization based on investment sources
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作者 XIAO Pengwen 《International Journal of Technology Management》 2016年第9期7-9,共3页
As the investment structure of economic structure has a direct impact on the industrial structure, economic structure and thus become the focus of research. However, due to the impact of the traditional planned econom... As the investment structure of economic structure has a direct impact on the industrial structure, economic structure and thus become the focus of research. However, due to the impact of the traditional planned economy system, for a long time, our focus on the expansion of investment scale, optimize investment structure and neglect, leading to low efficiency of investment, private investment is difficult to effectively start, optimizing economic structure adjustment difficulties and other problems. The paper has got a conclusion that the target of optimization of real estate investment and ways based on the status of investment of real estate, and integration analysis for real estate investment sources. 展开更多
关键词 real estate investment structure investment sources
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Ecological footprint of Gansu Province,China between 1997 and 2002:changes and inducement 被引量:1
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作者 Shang Haiyang Chen Kegong +1 位作者 Xu Zhongmin Sam Garland-Renn 《Ecological Economy》 2009年第2期187-194,共8页
The calculation of Ecological Footprint (EF) on the basis of Input-Output model (I-O model) was advanced by Bicknell, and modified and improved hy Ferng who corrected the footprint's aggregation to each sectors. ... The calculation of Ecological Footprint (EF) on the basis of Input-Output model (I-O model) was advanced by Bicknell, and modified and improved hy Ferng who corrected the footprint's aggregation to each sectors. For the lack of sufficient teehnique to deal with the trade between the research areas and the rest of the world, it it necessary to improve this method. And a dynamic analysis of the change of footprint based on I-O model, which could explore the factor impacting the footprint using the ,special advantage of I-O model, ought to be put into practice. After introducing the new method in detail, we calculate and compare the EF and the change of Gansu Province in the northwest of China in 1997 and 2002. The result shows that there was an increase of EF in 2002 caused by final domestic demand. Further; the inerement in EF export was 2.0 × 10^5 ha and 1.6 × 10^6 ha in import. The out-of- region support dropped from 22.6% to 18. 6%. We introduce three factors causing the EF change based on the character of I-O model: the productivity of the resourve which is explained by the change of resource used to obtain one unit output in a sector, the improvement of the economics and the final demand. Finally, we find that the effects of the three factors on the EF change are not identical except the industry sectors and the change of factors in the agriculture and the industry sectors works notably. 展开更多
关键词 Ecological footprint Input-Output model Inducement to change IhPAT
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The Utilization of Exotic Options in the Formation of Structured Products
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作者 Martina Rusnakova Abduhamid M. Ahmed Younis 《Journal of Modern Accounting and Auditing》 2012年第12期1814-1822,共9页
This paper deals with the issue of investment certificate formation in the financial market. Investment certificate is a type of structured products, the value of which is derived from the value of an underlying asset... This paper deals with the issue of investment certificate formation in the financial market. Investment certificate is a type of structured products, the value of which is derived from the value of an underlying asset. The underlying asset is usually a share in a company, a basket of shares, or an entire index, etc.. It can be stated that for every estimated development of an asset (growth, fall, and stagnation) or for every attitude to risks (conservative or aggressive investors), there is a suitable kind of certificate. The main objective is to perform an analysis of the structured product--Austria/Germany Bond 3 and its guarantee certificate construction using digital-barrier options. The authors have found an alternative opportunity to the purchase of this certificate, i.e., investment in a bank deposit, together with a purchase of cash or nothing down and four-knock-out call options and a sale of cash or nothing down and four-knock-out put options. The authors prove that the alternative investment has the same profit profile as the certificate. The authors made this analysis with the objective to contribute to the intellectualization of investors. 展开更多
关键词 investment certificates vanilla options barrier options digital options profit profile
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Overheated Investment in Real Estate Inhibits Innovation:Verification and Analysis in China's Case
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作者 张杰 杨连星 新夫 《China Economist》 2016年第5期111-123,共13页
Whether rapid real estate investment growth inhibits China's innovation is a critical question for China's economic sustainability. Based on China's provincial panel data and using land supply as an instru... Whether rapid real estate investment growth inhibits China's innovation is a critical question for China's economic sustainability. Based on China's provincial panel data and using land supply as an instrumental variable for real estate investment growth, we arrived at the following findings after effectively controlling endogenous factors that could lead to estimation errors. First of all, the faster real estate investment grows in a province, the lower the growth rates of innovation and R&D spending and invention patent authorizations will be in the province, an indication that real estate directly inhibits innovation in China. Such inhibition is particularly pronounced in the industrial sectors. Secondly, in the context of rampant real estate investment, the biased loan maturity structure of China's financial system in favor of the real estate industry further inhibits innovation. This paper has verified the existence of the direct effect of real estate investment growth on regional innovation and its indirect effect on regional innovation through the biased long maturity structure of the financial system. The empirical findings of this paper provide practical policy implications for China to strike a balance between real estate development and an innovation-driven development strategy. 展开更多
关键词 real estate investment growth INNOVATION loan maturity structure inhibition effect
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Structural Decomposition Analysis of the Decline in China's CO_2 Emission Intensity 2005–2010 被引量:3
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作者 李艳梅 赵剑锋 +1 位作者 杨涛 陈豹 《Journal of Resources and Ecology》 CSCD 2013年第4期311-316,共6页
Here we utilize input-output tables for 2005 and 2010 to calculate the change in carbon dioxide emission intensity. Results show that total carbon dioxide emissions were 6.79 and 9.30 billion tons, and carbon dioxide ... Here we utilize input-output tables for 2005 and 2010 to calculate the change in carbon dioxide emission intensity. Results show that total carbon dioxide emissions were 6.79 and 9.30 billion tons, and carbon dioxide emission intensity was 0.37 and 0.33 ton per thousand CNY in 2005 and 2010, respectively. Carbon dioxide emission intensity declined 11% over these five years. We used structural decomposition analysis modeling to measure the effect of four factors on this reduction in intensity. We found that the contribution values of energy structure, energy efficiency, economic growth mode and economic structure were -0.001, -0.102, 0.050, and 0.013 ton per thousand CNY, respectively. Changes in energy efficiency and energy structure are major factors promoting decreases in carbon dioxide emission intensity; the effect of the former is more distinct than the latter. Economic growth mode and economic structure are major factors that increase carbon dioxide emission intensity, whereby the effect of the former is more distinct than the latter. 展开更多
关键词 carbon dioxide emissions intensity economic growth energy consumption INPUT-OUTPUT structural decomposition analysis
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