Background:Bitcoin,the most innovate digital currency as of now,created since 2008,even through experienced its ups and downs,still keeps drawing attentions to all parts of society.It relies on peer-to-peer network,ac...Background:Bitcoin,the most innovate digital currency as of now,created since 2008,even through experienced its ups and downs,still keeps drawing attentions to all parts of society.It relies on peer-to-peer network,achieved decentralization,anonymous and transparent.As the most representative digital currency,people curious to study how Bitcoin’price changes in the past.Methods:In this paper,we use monthly data from 2011 to 2016 to build a VEC model to exam how economic factors such as Custom price index,US dollar index,Dow jones industry average,Federal Funds Rate and gold price influence Bitcoin price.Result:From empirical analysis we find that all these variables do have a long-term influence.US dollar index is the biggest influence on Bitcoin price while gold price influence the least.Conclusion:From our result,we conclude that for now Bitcoin can be treated as a speculative asset,however,it is far from being a proper credit currency.展开更多
Based on the research introduction of domestic and foreign scholars,dynamic equilibrium between the rural labor force flow and the price of agricultural product is analyzed by VEC model,according to the data of the ru...Based on the research introduction of domestic and foreign scholars,dynamic equilibrium between the rural labor force flow and the price of agricultural product is analyzed by VEC model,according to the data of the rural labor force flow and the price of agricultural products in the years 1990-2007.Chows breakpoint test is used to measure the stage characteristics of the impact of rural labor force flow on the price of agricultural product.Result shows that there is a long-term and stationary relationship between the flow quantity of rural labor force and the price of agricultural product.Rural labor force flow,as an exogenous force,affects the agricultural production,and further influences the price fluctuation of agricultural products.Impact of rural labor force flow on the price of agricultural product is from weak to strong,then grows gradually weaker,and reaches its peak value at the year 1998.With the development of rural society and economy and the market process,rural labor force flow endogenously affects the price of agricultural product,which has periodic characteristics.In order to achieve a dual stabilization of the rural labor force flow and the price of agricultural products,the following countermeasures are put forward:vigorously developing vocational education,increasing the support for agricultural production,and making active employment measures.展开更多
Based on the data related to the Chinese and world agricultural production and trade from 1986 to 2011,this paper uses the principal component analysis,cointegration and vector error correction model to perform the em...Based on the data related to the Chinese and world agricultural production and trade from 1986 to 2011,this paper uses the principal component analysis,cointegration and vector error correction model to perform the empirical analysis of the impact of processing,import and export of agricultural products on the agricultural modernization in China. The results show that the processing and export of agricultural products play a role in promoting the agricultural modernization in China,while the import of agricultural products has some negative effects on the agricultural modernization in China. The negative effects of the import of agricultural products are from the limitations of farmers' small-scale operation and foreign trading partners' protectionism. China should further develop the processing industry of agricultural products,and strengthen the role of downstream industries in promoting the agricultural modernization; improve the level of large-scale and intensive operation,and make good use of WTO rules,in order to provide the necessary market conditions for the agricultural modernization.展开更多
We select the per capita gross domestic product and rural residents' per capita net income in Xinjiang as the indicator variables to measure economic growth and farmers' income increase in Xinjiang, respective...We select the per capita gross domestic product and rural residents' per capita net income in Xinjiang as the indicator variables to measure economic growth and farmers' income increase in Xinjiang, respectively. We establish the cointegration equation, the vector error correction (VEC) model, and use the impulse response function to conduct empirical analysis of the evolutive law concerning relationship between economic growth and farmers' income increase in Xinjiang during the period 1978-2010. The results show that there is a cointegration relationship between economic growth in Xinjiang and farmers' income increase; the former plays an important role in promoting the latter, following the evolutive law "first intensify, then abate, intensify again, and finally become stable". We put the following policy recommendations: providing preferential policies for farmers, scientifically and rationally guiding the transfer of rural labor; improving the function of agriculture, increasing the proportion of non-farm income; gradually bridging the widening income gap between urban and rural areas, coordinating urban and rural development.展开更多
By establishing the VEC model, the relationship between Consumer Price Index (CPI) and Producer Price Index (PPI) is explored by using Johansen cointegration test and impulse response function. The results show that t...By establishing the VEC model, the relationship between Consumer Price Index (CPI) and Producer Price Index (PPI) is explored by using Johansen cointegration test and impulse response function. The results show that there is a long-term equilibrium cointegration relationship between CPI and PPI. CPI has a certain impact on PPI. PPI also has a certain impact on CPI. PPI has a great impact on itself both in the long-term and short-term. The current CPI will be adversely affected by the previous CPI and the positive impact of the previous PPI. The current PPI will be positively affected by the previous phase of CPI and the previous phase of PPI.展开更多
为了提高一维海浪谱的风涌浪成分划分精度,本文基于美国国家数据浮标中心(Na-tional Data Buoy Center,NDBC)和海浪波谱仪一维海浪谱数据,提出了一种风涌浪成分划分方法。该方法主要包括两个部分,谱模型参数优化部分和决策函数判别部分...为了提高一维海浪谱的风涌浪成分划分精度,本文基于美国国家数据浮标中心(Na-tional Data Buoy Center,NDBC)和海浪波谱仪一维海浪谱数据,提出了一种风涌浪成分划分方法。该方法主要包括两个部分,谱模型参数优化部分和决策函数判别部分,分别对应海浪谱中海浪成分的划分和风涌浪识别。首先,使用北海联合波浪项目开发的谱模型来拟合一维海浪谱进行海浪成分划分。每个谱模型代表了一个海浪成分,谱模型参数通过双重模拟退火算法进行迭代优化。其次,基于2022年12月4个浮标数据,采用支持向量机建立关于波周期与风速的决策函数来识别每个海浪成分为风浪或涌浪。最后,合并属于同种海浪成分的谱模型,得到一个风浪成分和一个涌浪成分。利用2022年6月另外2个浮标数据对方法进行了检验。结果表明:相较于目前美国国家数据浮标中心采用的修正波陡法,本文方法与二维谱风涌浪分离方法的一致性更好。此外,该方法也可用于海浪波谱仪一维海浪谱数据的风涌浪划分。展开更多
基金This work was supported by the Key Plan of National Social Science Foundation of China under the Grant 14ZDA044.
文摘Background:Bitcoin,the most innovate digital currency as of now,created since 2008,even through experienced its ups and downs,still keeps drawing attentions to all parts of society.It relies on peer-to-peer network,achieved decentralization,anonymous and transparent.As the most representative digital currency,people curious to study how Bitcoin’price changes in the past.Methods:In this paper,we use monthly data from 2011 to 2016 to build a VEC model to exam how economic factors such as Custom price index,US dollar index,Dow jones industry average,Federal Funds Rate and gold price influence Bitcoin price.Result:From empirical analysis we find that all these variables do have a long-term influence.US dollar index is the biggest influence on Bitcoin price while gold price influence the least.Conclusion:From our result,we conclude that for now Bitcoin can be treated as a speculative asset,however,it is far from being a proper credit currency.
文摘Based on the research introduction of domestic and foreign scholars,dynamic equilibrium between the rural labor force flow and the price of agricultural product is analyzed by VEC model,according to the data of the rural labor force flow and the price of agricultural products in the years 1990-2007.Chows breakpoint test is used to measure the stage characteristics of the impact of rural labor force flow on the price of agricultural product.Result shows that there is a long-term and stationary relationship between the flow quantity of rural labor force and the price of agricultural product.Rural labor force flow,as an exogenous force,affects the agricultural production,and further influences the price fluctuation of agricultural products.Impact of rural labor force flow on the price of agricultural product is from weak to strong,then grows gradually weaker,and reaches its peak value at the year 1998.With the development of rural society and economy and the market process,rural labor force flow endogenously affects the price of agricultural product,which has periodic characteristics.In order to achieve a dual stabilization of the rural labor force flow and the price of agricultural products,the following countermeasures are put forward:vigorously developing vocational education,increasing the support for agricultural production,and making active employment measures.
基金Supported by Business Management Discipline Cultivation Project of Rongchang Campus of Southwest University(RCQG207001)
文摘Based on the data related to the Chinese and world agricultural production and trade from 1986 to 2011,this paper uses the principal component analysis,cointegration and vector error correction model to perform the empirical analysis of the impact of processing,import and export of agricultural products on the agricultural modernization in China. The results show that the processing and export of agricultural products play a role in promoting the agricultural modernization in China,while the import of agricultural products has some negative effects on the agricultural modernization in China. The negative effects of the import of agricultural products are from the limitations of farmers' small-scale operation and foreign trading partners' protectionism. China should further develop the processing industry of agricultural products,and strengthen the role of downstream industries in promoting the agricultural modernization; improve the level of large-scale and intensive operation,and make good use of WTO rules,in order to provide the necessary market conditions for the agricultural modernization.
基金Supported by Soft Science Project of Science and Technology Department of Xinjiang Uygur Autonomous Region (200942140)
文摘We select the per capita gross domestic product and rural residents' per capita net income in Xinjiang as the indicator variables to measure economic growth and farmers' income increase in Xinjiang, respectively. We establish the cointegration equation, the vector error correction (VEC) model, and use the impulse response function to conduct empirical analysis of the evolutive law concerning relationship between economic growth and farmers' income increase in Xinjiang during the period 1978-2010. The results show that there is a cointegration relationship between economic growth in Xinjiang and farmers' income increase; the former plays an important role in promoting the latter, following the evolutive law "first intensify, then abate, intensify again, and finally become stable". We put the following policy recommendations: providing preferential policies for farmers, scientifically and rationally guiding the transfer of rural labor; improving the function of agriculture, increasing the proportion of non-farm income; gradually bridging the widening income gap between urban and rural areas, coordinating urban and rural development.
文摘By establishing the VEC model, the relationship between Consumer Price Index (CPI) and Producer Price Index (PPI) is explored by using Johansen cointegration test and impulse response function. The results show that there is a long-term equilibrium cointegration relationship between CPI and PPI. CPI has a certain impact on PPI. PPI also has a certain impact on CPI. PPI has a great impact on itself both in the long-term and short-term. The current CPI will be adversely affected by the previous CPI and the positive impact of the previous PPI. The current PPI will be positively affected by the previous phase of CPI and the previous phase of PPI.
文摘为了提高一维海浪谱的风涌浪成分划分精度,本文基于美国国家数据浮标中心(Na-tional Data Buoy Center,NDBC)和海浪波谱仪一维海浪谱数据,提出了一种风涌浪成分划分方法。该方法主要包括两个部分,谱模型参数优化部分和决策函数判别部分,分别对应海浪谱中海浪成分的划分和风涌浪识别。首先,使用北海联合波浪项目开发的谱模型来拟合一维海浪谱进行海浪成分划分。每个谱模型代表了一个海浪成分,谱模型参数通过双重模拟退火算法进行迭代优化。其次,基于2022年12月4个浮标数据,采用支持向量机建立关于波周期与风速的决策函数来识别每个海浪成分为风浪或涌浪。最后,合并属于同种海浪成分的谱模型,得到一个风浪成分和一个涌浪成分。利用2022年6月另外2个浮标数据对方法进行了检验。结果表明:相较于目前美国国家数据浮标中心采用的修正波陡法,本文方法与二维谱风涌浪分离方法的一致性更好。此外,该方法也可用于海浪波谱仪一维海浪谱数据的风涌浪划分。
