Promoting the coupling coordination development of port and its hinterland city environments is an important way to improve urban economic competitiveness.Based on relevant data of 13 coastal port cities in eastern Ch...Promoting the coupling coordination development of port and its hinterland city environments is an important way to improve urban economic competitiveness.Based on relevant data of 13 coastal port cities in eastern China from 2000 to 2018,this study explores the coupling coordination development of port and city environments and its impact on urban economic competitiveness by constructing the coupling coordination degree model and the panel threshold model.The research results show that:(1)In terms of the coupling coordination development of port and city environments,most coastal ports and their hinterland cities are in a state of moderate or serious disorder.Overall,the degree of coupling coordination of port and city environments needs to be further improved;(2)The coupling coordination degree of port and city environments has a significant impact on urban economic competitiveness,and this effect gradually increases with the development of the ports and the urban economy.Among the variables that impact the urban economic competitiveness,fixed assets investment and foreign trade are significant factors that can enhance urban economic competitiveness.(3)At present,there is a“U-shaped”relationship between the coupling coordination degree of port-city environments and the urban economic competitiveness.This relationship lies on the right side of the inflection point of the“U-shaped”curve.Therefore,following the concept of assigning priority to ecological development,expanding fixed assets investment and actively developing foreign trade can further enhance the urban economic competitiveness.展开更多
Based on the analysis of rice planting and export development in Heilongjiang Province in 2013-2021,this paper comprehensively used three export competitiveness analysis methods,namely,trade competitiveness index,reve...Based on the analysis of rice planting and export development in Heilongjiang Province in 2013-2021,this paper comprehensively used three export competitiveness analysis methods,namely,trade competitiveness index,revealed comparative advantage(RCA)analysis and international market share analysis,to compare the four major rice exporters in the world and the three major rice export provinces and cities in China.Besides,it evaluated the rice export competitiveness of Heilongjiang Province from multiple perspectives.It analyzed the reasons for low competitiveness in terms of export product structure,export market structure,production and processing technology,and brand building.Finally,it is recommended to clarify the positioning of rice export quality and take more measures to ensure product quality;improve the level of industrialization of rice production and processing,and extend the rice industry chain;develop diversified rice export markets and improve export flexibility;adhere to the principle of"opening the door and going out",expand the international popularity of high-quality brands,so as to enhance the rice export competitiveness of Heilongjiang Province.展开更多
Transgene escape could lead to genetically modified rice establishing wild populations in the natural environment and competing for survival space with weeds.However,whether the expression of the Bacillus thuringiensi...Transgene escape could lead to genetically modified rice establishing wild populations in the natural environment and competing for survival space with weeds.However,whether the expression of the Bacillus thuringiensis(Bt)gene in rice will alter the relationship between transgene plants and weeds and induce undesirable environmental consequences are poorly understood.Thus,field experiments were conducted to investigate the weed competitiveness and assess the ecological risk of transgenic Bt rice under herbicide-free and lepidopterous pest-controlled environments.Results showed that weed–rice competition in the direct-sowing(DS)field was earlier and more severe than that in the transplanting(TP)field,which resulted in a significant decrease in biomass and yield in DS.However,conventional Bt and non-Bt rice yield was not significantly different.The weed number,weed coverage ratio,and weed diversity of conventional Bt rice were significantly higher than those of non-Bt rice at the early growth and mature stages,especially in DS plots,suggesting that Bt traits did not increase the weed competitiveness of transgenic rice and had no negative effect on weed diversity.Grain yield and weed number varied between different hybrid rice lines,but those differences were insignificant between Bt and non-Bt rice.The number of insects increased with the increase of weeds in hybrid rice plots,whereas the insect number and diversity did not display a significant difference between Bt and non-Bt rice.Therefore,the ecological risk of transgenic Bt rice is comparable to non-Bt rice.展开更多
After 5 years of accumulation, Animal Models and Experimental Medicine(AMEM) has received 396 manuscripts from 46 countries and regions, including Chinese mainland, Iran, the United States, India, Israel, Nigeria, Bra...After 5 years of accumulation, Animal Models and Experimental Medicine(AMEM) has received 396 manuscripts from 46 countries and regions, including Chinese mainland, Iran, the United States, India, Israel, Nigeria, Brazil, Bangladesh, Sri Lanka, the Netherlands, Denmark, Australia, Japan, and Spain. It has become an important international exchange and display platform for innovative research results in the field of laboratory animal science and basic medicine.展开更多
The climate issue has become an environmental concern for all sectors of the world and the low-carbon economy has thus become a new economic development model to combat climate change.With the development of low-carbo...The climate issue has become an environmental concern for all sectors of the world and the low-carbon economy has thus become a new economic development model to combat climate change.With the development of low-carbon economy era,the textile and clothing industry plays an important role in stabilizing the development of low-carbon economy and society,and China has put forward the development requirements of low-carbon transformation for the textile and clothing industry,and also it has an important strategic value to promote the high-quality development of low-carbon economy and society,and the construction of brands’ core competitiveness is an inevitable choice for clothing brands in the face of the new form of international competition.As a result,the evaluation indicator of clothing brands’ core competitiveness in the low-carbon economy is used to measure the core competitiveness of clothing brands.Based on the corresponding verification results obtained by analytic hierarchy process(AHP) analysis,it can guide the low-carbon development of the clothing industry,thus proposing a more reasonable way to build the core competitiveness of clothing brands.It can promote the low-carbon transformation and upgrading of the clothing industry,effectively increase the market share of clothing brands,and promote the high-quality development of clothing brands.展开更多
Due to the late start of China’s forest health industry,related research is lagging behind,which results in the inability to propose a corresponding path to enhance competitiveness.Based on this,the evaluation index ...Due to the late start of China’s forest health industry,related research is lagging behind,which results in the inability to propose a corresponding path to enhance competitiveness.Based on this,the evaluation index system of provincial forest health industry competitiveness was constructed by using the Porter diamond model,and the Entropy-TOPSIS model is used to evaluate the competitiveness of China’s provincial forest health industry,and the key influencing factors of the forest health industry competitiveness are identified by using the grey correlation analysis method,and the specific promotion path was designed.The empirical results show that the grey correlation degree between related and supporting industries and the competitiveness score of the forest health industry is the highest,which confirms that it is the key influencing factor of the competitiveness of the forest health industry.Therefore,government departments should vigorously promote the integration of cultural tourism,medical care,pension and other related industries with the forest health care industry;enterprises should strengthen the construction of forest health infrastr ucture and supporting facilities to improve the level of forest health services.展开更多
From the perspective of wellbeing performance of ecological input,this paper constructs a low-carbon competitiveness evaluation model with wellbeing performance of carbon emissions as the measurement standard,and uses...From the perspective of wellbeing performance of ecological input,this paper constructs a low-carbon competitiveness evaluation model with wellbeing performance of carbon emissions as the measurement standard,and uses the LMDI factor decomposition method to decompose the total effect of low-carbon competitiveness changes into technology effect and service effect.And then it conducts positive analysis and comparison of the low-carbon competitiveness and its effect contribution of G20 countries from1990 to 2018.The results are as follows:Firstly,in 2018,the UK,France,Argentina,Brazil,and Germany had higher low-carbon competitiveness.From 1990 to 2018,the low-carbon competitiveness of the UK,Turkey,Germany,Italy,and Brazil increase rapidly.Secondly,from 1990 to 2018,the total effect of low-carbon competitiveness of G20 member states was all positive,that is to say,the overall wellbeing performance of carbon emissions increased,technology effect and service effect are positive in 17 countries and negative in 2 countries respectively.Thirdly,China's low-carbon competitiveness is low,lacking static and dynamic advantages,although the technology effect is the highest,but the service effect is the lowest,resulting in a low total effect,which indicates that the wellbeing performance of economic growth is the main bottleneck of China's low-carbon development.Finally,the policy recommendations for China's future low-carbon transition and sustainable development are put forward.展开更多
Objective To analyze the current situation of medicine circulation enterprises and summarize the influence of frequently introduced industry policies on the pharmaceutical field,so as to provide suggestions on improvi...Objective To analyze the current situation of medicine circulation enterprises and summarize the influence of frequently introduced industry policies on the pharmaceutical field,so as to provide suggestions on improving the competitiveness and maintaining sustainable development of medicine circulation enterprises in China.Methods Industry policy analysis,literature inquiry,expert interview and questionnaire survey were used to study the challenges that medicine circulation faced under the new situation.Then,the key indexes were found out to improve its competitiveness.Results and Conclusion Through the analysis of the current situation of the industry,policy orientation and market demand,some suggestions are put forward for related enterprises to improve their competitiveness.展开更多
At present,Guangzhou homestay industry is facing a bottleneck.Therefore,it is particularly important to analyze the factors that influence the competitiveness of rural homestays in Guangzhou,determine the evaluation s...At present,Guangzhou homestay industry is facing a bottleneck.Therefore,it is particularly important to analyze the factors that influence the competitiveness of rural homestays in Guangzhou,determine the evaluation system of competitiveness,and determine the weight of each factor.Based on Porter’s diamond theory,this paper analyzes and summarizes the influencing factors of homestay competitiveness,and divides the influencing factors into 5 primary factors and 34 secondary factors.The analytic hierarchy process(AHP)was used to determine the judgment matrix to form the weight results of each factor,and the results show that product characteristics account for the largest proportion among first level factors.Secondary factors such as theme creativity,personalized brand and the overall score account for a large proportion.The research results can act as a reference for the construction of competitiveness evaluation mechanism and model of local rural quality homestays.展开更多
The competitiveness of a country’s agricultural products is not only related to its capacity to export agricultural products,but also to the sustainability of its agricultural sector.How to improve the international ...The competitiveness of a country’s agricultural products is not only related to its capacity to export agricultural products,but also to the sustainability of its agricultural sector.How to improve the international competitiveness of a country’s agricultural products while maintaining the sustainability of its agricultural sector is a practical problem of great urgency for a country with a large agricultural sector such as China.With this in mind,this study should have a considerable policy and practical significance.We used two evaluation indices,namely trade competitiveness(TC)index and revealed comparative advantage(RCA)index,to measure and analyze the international competitiveness of six China’s representative agricultural products,i.e.,live pigs,live chickens,live cattle,apples,tea,and beer,and to examine the changing trends of these products’competitiveness during 1994-2013.The results indicate that the export competitiveness of China’s agricultural products is weak and likely to deteriorate further.However,some traditional agricultural products with distinctive regional characteristics,for example,tea and live pigs,are relatively strong internationally.To this end,China should vigorously promote the production and foreign trade in traditional agricultural products with distinctive regional characteristics.At the same time,comprehensive measures should be taken to enhance the international competitiveness of disadvantaged agricultural products.展开更多
Based on the theoretical system of urban competitiveness,the evaluation model of urban competitiveness from the perspective of competition and cooperation was established.According to the significance index and explan...Based on the theoretical system of urban competitiveness,the evaluation model of urban competitiveness from the perspective of competition and cooperation was established.According to the significance index and explanatory index,the urban competitiveness was divided into urban comprehensive competitiveness(UC),urban internal node competitiveness(NC)and external competitiveness of urban network(EC).The scores and rankings of UC,NC and EC in 2006,2010 and 2015 were obtained by conducting the comprehensive evaluation of the urban competitiveness of Dongguan City with integrated usage of the principal component analysis and Technique for Order Preference by Similarity to an Ideal Solution and the data of other 20 cities in Guangdong province,Hong Kong and Macao.The research showed that the competitiveness of Dongguan City has been greatly improved during the decade of 2006–2015,and the regional cities in Guangdong Province had significant differences,which are reflected in the two dimensions of urban internal node competitiveness(NC)and external competitiveness of urban network(EC).Based on this,this study further analyzed Dongguan’s urban competitiveness from two dimensions of NC and EC,and took Dongguan Songshan Lake High-tech Zone as an example to study how to promote Dongguan’s urban competitiveness from the industrial level.展开更多
17 indices are selected,such as the growth rate of total regional output value,the proportion of tertiary industry in GDP,per capita financial expenditure,and soil erosion rate of Guizhou Province in 2009.According to...17 indices are selected,such as the growth rate of total regional output value,the proportion of tertiary industry in GDP,per capita financial expenditure,and soil erosion rate of Guizhou Province in 2009.According to the relevant indices data of statistical yearbook and governmental website,by using the method of factor analysis and the method of cluster analysis,we assess the competitiveness of county economy in 88 counties of Guizhou Province.The results show that the competitiveness of county economy in Guizhou Province is impacted by factors of location and economic foundation.In addition,the resources environment,economic structure,economic developmental speed and other factors also impact the competitiveness of county economy in Guizhou Province.Based on these,in the light of the developmental characteristics of different counties in conjunction with different developmental advantages in different regions,we should adopt different developmental strategies according to local conditions,which is significant to rapid,healthy and sustainable development of county economy in Guizhou Province.展开更多
Connotation of land competitiveness is expatiated from both the narrow sense and broad sense. Evaluation index system of land competitiveness is established according to the 2008 China Statistical Yearbook and 2008 Ch...Connotation of land competitiveness is expatiated from both the narrow sense and broad sense. Evaluation index system of land competitiveness is established according to the 2008 China Statistical Yearbook and 2008 China Land Resources Statistical Yearbook. Efficiency Coefficient Method and Principal Component Analysis Method are used to evaluate the land competitiveness of 31 provincial units in China. Result shows that in the year 2007, land competitiveness gradually decreases from southeast to northwest. The land competitiveness and GDP per unit land have significant negative correlation. The rank of approved new construction land has low positive correlation with the rank of land competitiveness in China. This indicates that there is little correlation between the allocation of regional new construction land and the land use efficiency. Therefore, it is suggested that regional allocation of new construction land should be treated differently based on the evaluation result of land competitiveness.展开更多
The empirical analyses on agricultural industrialization pattern and local animal husbandry in northwestern areas show that the industrialization development of husbandry in northwestern areas faces international and ...The empirical analyses on agricultural industrialization pattern and local animal husbandry in northwestern areas show that the industrialization development of husbandry in northwestern areas faces international and national competitive pressures. The survival ability and competitive ability are the key points of husbandry industrialization. The paper, having a lamb fattening professional cooperatives in Hainan sub-prefecture of Qinghai Province as the example, introduces the general conditions of the establishment and development of cooperatives and points out the advantages and disadvantages of husbandry in Qinghai Province. The paper analyzes the competitive advantages of Hongyuan Lamb Fattening Cooperatives through five forces mode of Michael Port, putting forward countermeasures and upgrading the competitiveness of Hongyuan Lamb Fattening Competitive.展开更多
Common prosperity,an important goal of human development,increasingly has to be achieved through the common prosperity of cities.The research into and discovery of the determinants which create differences in urban ec...Common prosperity,an important goal of human development,increasingly has to be achieved through the common prosperity of cities.The research into and discovery of the determinants which create differences in urban economic competitiveness is of great signi ficance as,thereby,the research and expected discovery can help with the formulation of relevant policies for development,competition,and cooperation to promote win-win conditions among cities.However,such research is still rare.Based on the economic competitiveness data of 1,007 cities,this paper uses OLS regression and Shapley-value based decompositions regression to analyze factors affecting the economic competitiveness of global cities and differences that the cities made.Combined with quantile regression,studying the law of changing of each factor's effect on cities with different levels of economic competitiveness is of theoretical and practical signi ficance.The study findings are as follows.(1)The variability of global urban economic competitiveness is quite large.Cities in North America and Europe are still the benchmarks of global urban economic prosperity.(2)Financial services,technological innovation,industrial system,business environment,institutional environment,infrastructure,among other factors,have signi ficant impacts on the economic competitiveness of cities.(3)The primary factor that in fluenced the variability in economic competitiveness is technological innovation.(4)The ranking of the main in fluencing factors varied slightly between cities at different levels of economic competitiveness.These indicate that the international community should promote innovation in and diffusion of science and technology to achieve common prosperity by narrowing the gap between cities.The relevant decision-making departments,e.g.urban planning departments with strong economic and finance expertise of the cities in different development zones should adopt different measures in accordance with their actual situations.展开更多
Under the umbrella of WTO, the reduction in trade barriers has forced the policy makers to focus on the export competitiveness. Rice is an important source for foreign exchange earnings for the economy of Pakistan, ke...Under the umbrella of WTO, the reduction in trade barriers has forced the policy makers to focus on the export competitiveness. Rice is an important source for foreign exchange earnings for the economy of Pakistan, keeping in mind of this fact, the competitiveness of Pakistan's rice with other major exporters was examined by applying revealed competitive advantage. The domestic consumption trends of rice among the major rice exporting countries were also analyzed in the current study. The results revealed that as compare to other major exporters of rice in the world, Pakistan had high competitive and comparative advantage in the production of rice. The comparison of the movements in comparative advantage indices for Pakistan with the major world rice competitors/exporters showed that Pakistan possessed relatively high comparative and competitive advantages in rice production. The declining domestic per capita consumption of rice and increasing trends in competitiveness for Pakistan clearly revealed the expected potential of higher growth which meant that rice exports from Pakistan could continue to play an important role for the earnings of foreign exchange. In order to exploit the potential benefits of rice exports, we need to strengthen the competitiveness in rice sector of Pakistan.展开更多
Based on the World Input-Output Database(WIOD), this paper conducts a forward-linkage decomposition of value-added in trade to estimate China's service value-added exports and its service sector's internationa...Based on the World Input-Output Database(WIOD), this paper conducts a forward-linkage decomposition of value-added in trade to estimate China's service value-added exports and its service sector's international competitiveness during 2000-2014. Result indicates that during the sample period, China's service exports measured by forward-linkage decomposition method accounted for around 35% in its total export. While the value of services exported directly through the service sector accounted for a falling share, the value of services exported through other sectors represented an increasing share. China ranks second in the world in terms of market share of service exports. However, the revealed comparative advantage(RCA) of China's service exports and export sophistication remains limited.展开更多
On the basis of the developmental status of Guangxi distinctive agriculture,the key selection of developing Guangxi distinctive agriculture is analyzed.Its distinctive agriculture contains distinctive plantation,disti...On the basis of the developmental status of Guangxi distinctive agriculture,the key selection of developing Guangxi distinctive agriculture is analyzed.Its distinctive agriculture contains distinctive plantation,distinctive forestry and distinctive breeding.Based on the analysis,two display indices,domestic comparative advantages index and domestic competitiveness,are selected to analyze the competitiveness of Guangxi distinctive agriculture.The results show that at present the overall competitiveness of Guangxi distinctive agriculture is strong,but its competitiveness is reflected on resource advantages and most of the resources are primary agro-products.Accordingly,in the future,Guangxi distinctive agriculture should adopt non-equilibrium developmental strategy;take the great-leap-forward developmental path;apply modern production elements to increase the competitiveness of Guangxi distinctive agriculture.It should lay stress on "three innovation",which includes organization innovation,developing distinctive agricultural firms ;technology innovation,enlarging the scope and scale of agricultural listed companies;financial fund-raising innovation,transforming traditional distinctive agriculture by using high and new technology.展开更多
Glyphosate and glufosinate resistant (RR/LL) volunteer corn has become a problem when hybrid RR/LL corn follows hybrid RR/LL corn in the rotation. A total of six field trials were conducted over a three-year period (2...Glyphosate and glufosinate resistant (RR/LL) volunteer corn has become a problem when hybrid RR/LL corn follows hybrid RR/LL corn in the rotation. A total of six field trials were conducted over a three-year period (2008 to 2010) in southwestern Ontario to 1) evaluate the competitiveness of volunteer RR/LL corn in hybrid RR/LL corn, and 2) determine how to control volunteer RR/LL corn in hybrid RR/LL corn. The predicted volunteer RR/LL corn density to reduce hybrid RR/LL corn yield by 5% was 1.7 volunteer RR/LL corn plants m-2. There was no crop injury in hybrid RR/LL corn with herbicides evaluated at 1 and 2 WAA except for rimsulfuron(15 g·ai·ha-1) and foramsulfuron (35 g·ai·ha-1) which caused as much as 5% and 11% injury in hybrid RR/LL corn, respectively. Glyphosate (1800 g·ae·ha-1), glufosinate(500 g·ae·ha-1) and glyphosate + glufosinate (1800 + 500 g·ae·ha-1) provided up to 18%, 10% and 21% control of volunteer RR/LL corn, respectively. The POST application of rimsulfuron (15 g·ai·ha-1), nicosulfuron (25 g·ai·ha-1), nicosulfuron/rimsulfuron (25 g·ai·ha-1), foramsulfuron (35 g·ai·ha-1), and primisulfuron/dicamba (166 g·ai·ha-1) did not provided any control of volunteer RR/LL corn. Glyphosate and glyphosate + glufosinate reduced volunteer corn density 26% and 30%, respectively. The other herbicides evaluated did not reduce volunteer RR/LL corn density compared to the weedy control. None of the herbicides evaluated reduced volunteer RR/LL corn cob numbers compared to the weedy control. Glyphosate + glufosinate applied POST reduced volunteer RR/LL corn yield 35% compared to the weedy control but other herbicides evaluated caused no reduction in volunteer RR/LL corn yield compared to the weedy control. Glyphosate applied POST resulted in hybrid RR/LL corn yield equivalent to the weed free control but all other herbicide treatments resulted hybrid RR/LL corn yield equivalent to the weedy control. This research concludes that volunteer RR/LL corn can be very competitive with RR/LL hybrid corn. None of the herbicides evaluated provided adequate control of volunteer RR/LL corn in hybrid RR/LL corn.展开更多
Through reviewing the viewpoints of former scholars, the connotation and features of supply chain of agricultural industrial cluster are introduced. The agricultural industrial cluster model constituted by core networ...Through reviewing the viewpoints of former scholars, the connotation and features of supply chain of agricultural industrial cluster are introduced. The agricultural industrial cluster model constituted by core network and supporting network is constructed. Three operation models of this kind of supply chain is described: the model takes wholesale market of agricultural products as the core; the model take pillar industries of agricultural industrialization as core; model takes the chains of retail enterprises as core. The competitiveness of agricultural industrial cluster is researched. The research assumes that the competiveness of supply chain of agricultural industrial cluster is mainly represented to make the agricultural industrial cluster to acquire more capabilities in terms of innovation and knowledge sharing capability, resource allocation capability, agile market adaptability and distinct value creation capability.展开更多
基金This research is supported by Hunan Provincial Natural Science Foundation of China(Grant No.2021JJ30304)the General Topics of Hunan Social Science Achievement Evaluation Committee of China(Grant No.XSP22YBC366)the Key Scientific Research Project of Hunan Provincial Department of Education of China(Grant No.21B0592).
文摘Promoting the coupling coordination development of port and its hinterland city environments is an important way to improve urban economic competitiveness.Based on relevant data of 13 coastal port cities in eastern China from 2000 to 2018,this study explores the coupling coordination development of port and city environments and its impact on urban economic competitiveness by constructing the coupling coordination degree model and the panel threshold model.The research results show that:(1)In terms of the coupling coordination development of port and city environments,most coastal ports and their hinterland cities are in a state of moderate or serious disorder.Overall,the degree of coupling coordination of port and city environments needs to be further improved;(2)The coupling coordination degree of port and city environments has a significant impact on urban economic competitiveness,and this effect gradually increases with the development of the ports and the urban economy.Among the variables that impact the urban economic competitiveness,fixed assets investment and foreign trade are significant factors that can enhance urban economic competitiveness.(3)At present,there is a“U-shaped”relationship between the coupling coordination degree of port-city environments and the urban economic competitiveness.This relationship lies on the right side of the inflection point of the“U-shaped”curve.Therefore,following the concept of assigning priority to ecological development,expanding fixed assets investment and actively developing foreign trade can further enhance the urban economic competitiveness.
基金Social Science Planning Project of Xi an City(JG140)Bidding Project of Buchang Xixian Economic Research Institute(SMZX202113).
文摘Based on the analysis of rice planting and export development in Heilongjiang Province in 2013-2021,this paper comprehensively used three export competitiveness analysis methods,namely,trade competitiveness index,revealed comparative advantage(RCA)analysis and international market share analysis,to compare the four major rice exporters in the world and the three major rice export provinces and cities in China.Besides,it evaluated the rice export competitiveness of Heilongjiang Province from multiple perspectives.It analyzed the reasons for low competitiveness in terms of export product structure,export market structure,production and processing technology,and brand building.Finally,it is recommended to clarify the positioning of rice export quality and take more measures to ensure product quality;improve the level of industrialization of rice production and processing,and extend the rice industry chain;develop diversified rice export markets and improve export flexibility;adhere to the principle of"opening the door and going out",expand the international popularity of high-quality brands,so as to enhance the rice export competitiveness of Heilongjiang Province.
基金funded by the National Program of Transgenic Variety Development of China(2016ZX08001001)。
文摘Transgene escape could lead to genetically modified rice establishing wild populations in the natural environment and competing for survival space with weeds.However,whether the expression of the Bacillus thuringiensis(Bt)gene in rice will alter the relationship between transgene plants and weeds and induce undesirable environmental consequences are poorly understood.Thus,field experiments were conducted to investigate the weed competitiveness and assess the ecological risk of transgenic Bt rice under herbicide-free and lepidopterous pest-controlled environments.Results showed that weed–rice competition in the direct-sowing(DS)field was earlier and more severe than that in the transplanting(TP)field,which resulted in a significant decrease in biomass and yield in DS.However,conventional Bt and non-Bt rice yield was not significantly different.The weed number,weed coverage ratio,and weed diversity of conventional Bt rice were significantly higher than those of non-Bt rice at the early growth and mature stages,especially in DS plots,suggesting that Bt traits did not increase the weed competitiveness of transgenic rice and had no negative effect on weed diversity.Grain yield and weed number varied between different hybrid rice lines,but those differences were insignificant between Bt and non-Bt rice.The number of insects increased with the increase of weeds in hybrid rice plots,whereas the insect number and diversity did not display a significant difference between Bt and non-Bt rice.Therefore,the ecological risk of transgenic Bt rice is comparable to non-Bt rice.
文摘After 5 years of accumulation, Animal Models and Experimental Medicine(AMEM) has received 396 manuscripts from 46 countries and regions, including Chinese mainland, Iran, the United States, India, Israel, Nigeria, Brazil, Bangladesh, Sri Lanka, the Netherlands, Denmark, Australia, Japan, and Spain. It has become an important international exchange and display platform for innovative research results in the field of laboratory animal science and basic medicine.
文摘The climate issue has become an environmental concern for all sectors of the world and the low-carbon economy has thus become a new economic development model to combat climate change.With the development of low-carbon economy era,the textile and clothing industry plays an important role in stabilizing the development of low-carbon economy and society,and China has put forward the development requirements of low-carbon transformation for the textile and clothing industry,and also it has an important strategic value to promote the high-quality development of low-carbon economy and society,and the construction of brands’ core competitiveness is an inevitable choice for clothing brands in the face of the new form of international competition.As a result,the evaluation indicator of clothing brands’ core competitiveness in the low-carbon economy is used to measure the core competitiveness of clothing brands.Based on the corresponding verification results obtained by analytic hierarchy process(AHP) analysis,it can guide the low-carbon development of the clothing industry,thus proposing a more reasonable way to build the core competitiveness of clothing brands.It can promote the low-carbon transformation and upgrading of the clothing industry,effectively increase the market share of clothing brands,and promote the high-quality development of clothing brands.
基金supported by the Humanities and Social Sciences Fund for Yunnan Provincial Academy and School Education Cooperation(Grant No.SYSX202107)Scientific Research Fund of Yunnan Provincial Department of Education(Grant No.2022Y630)Science and Technology Innovation Fund of Southwest Forestry University(Grant No.KZ21006)。
文摘Due to the late start of China’s forest health industry,related research is lagging behind,which results in the inability to propose a corresponding path to enhance competitiveness.Based on this,the evaluation index system of provincial forest health industry competitiveness was constructed by using the Porter diamond model,and the Entropy-TOPSIS model is used to evaluate the competitiveness of China’s provincial forest health industry,and the key influencing factors of the forest health industry competitiveness are identified by using the grey correlation analysis method,and the specific promotion path was designed.The empirical results show that the grey correlation degree between related and supporting industries and the competitiveness score of the forest health industry is the highest,which confirms that it is the key influencing factor of the competitiveness of the forest health industry.Therefore,government departments should vigorously promote the integration of cultural tourism,medical care,pension and other related industries with the forest health care industry;enterprises should strengthen the construction of forest health infrastr ucture and supporting facilities to improve the level of forest health services.
文摘From the perspective of wellbeing performance of ecological input,this paper constructs a low-carbon competitiveness evaluation model with wellbeing performance of carbon emissions as the measurement standard,and uses the LMDI factor decomposition method to decompose the total effect of low-carbon competitiveness changes into technology effect and service effect.And then it conducts positive analysis and comparison of the low-carbon competitiveness and its effect contribution of G20 countries from1990 to 2018.The results are as follows:Firstly,in 2018,the UK,France,Argentina,Brazil,and Germany had higher low-carbon competitiveness.From 1990 to 2018,the low-carbon competitiveness of the UK,Turkey,Germany,Italy,and Brazil increase rapidly.Secondly,from 1990 to 2018,the total effect of low-carbon competitiveness of G20 member states was all positive,that is to say,the overall wellbeing performance of carbon emissions increased,technology effect and service effect are positive in 17 countries and negative in 2 countries respectively.Thirdly,China's low-carbon competitiveness is low,lacking static and dynamic advantages,although the technology effect is the highest,but the service effect is the lowest,resulting in a low total effect,which indicates that the wellbeing performance of economic growth is the main bottleneck of China's low-carbon development.Finally,the policy recommendations for China's future low-carbon transition and sustainable development are put forward.
文摘Objective To analyze the current situation of medicine circulation enterprises and summarize the influence of frequently introduced industry policies on the pharmaceutical field,so as to provide suggestions on improving the competitiveness and maintaining sustainable development of medicine circulation enterprises in China.Methods Industry policy analysis,literature inquiry,expert interview and questionnaire survey were used to study the challenges that medicine circulation faced under the new situation.Then,the key indexes were found out to improve its competitiveness.Results and Conclusion Through the analysis of the current situation of the industry,policy orientation and market demand,some suggestions are put forward for related enterprises to improve their competitiveness.
文摘At present,Guangzhou homestay industry is facing a bottleneck.Therefore,it is particularly important to analyze the factors that influence the competitiveness of rural homestays in Guangzhou,determine the evaluation system of competitiveness,and determine the weight of each factor.Based on Porter’s diamond theory,this paper analyzes and summarizes the influencing factors of homestay competitiveness,and divides the influencing factors into 5 primary factors and 34 secondary factors.The analytic hierarchy process(AHP)was used to determine the judgment matrix to form the weight results of each factor,and the results show that product characteristics account for the largest proportion among first level factors.Secondary factors such as theme creativity,personalized brand and the overall score account for a large proportion.The research results can act as a reference for the construction of competitiveness evaluation mechanism and model of local rural quality homestays.
文摘The competitiveness of a country’s agricultural products is not only related to its capacity to export agricultural products,but also to the sustainability of its agricultural sector.How to improve the international competitiveness of a country’s agricultural products while maintaining the sustainability of its agricultural sector is a practical problem of great urgency for a country with a large agricultural sector such as China.With this in mind,this study should have a considerable policy and practical significance.We used two evaluation indices,namely trade competitiveness(TC)index and revealed comparative advantage(RCA)index,to measure and analyze the international competitiveness of six China’s representative agricultural products,i.e.,live pigs,live chickens,live cattle,apples,tea,and beer,and to examine the changing trends of these products’competitiveness during 1994-2013.The results indicate that the export competitiveness of China’s agricultural products is weak and likely to deteriorate further.However,some traditional agricultural products with distinctive regional characteristics,for example,tea and live pigs,are relatively strong internationally.To this end,China should vigorously promote the production and foreign trade in traditional agricultural products with distinctive regional characteristics.At the same time,comprehensive measures should be taken to enhance the international competitiveness of disadvantaged agricultural products.
基金Funded Project of Advanced Innovation Center for Future Urban Design of Beijing University of Civil Engineering and Architecture(udc2018010921).
文摘Based on the theoretical system of urban competitiveness,the evaluation model of urban competitiveness from the perspective of competition and cooperation was established.According to the significance index and explanatory index,the urban competitiveness was divided into urban comprehensive competitiveness(UC),urban internal node competitiveness(NC)and external competitiveness of urban network(EC).The scores and rankings of UC,NC and EC in 2006,2010 and 2015 were obtained by conducting the comprehensive evaluation of the urban competitiveness of Dongguan City with integrated usage of the principal component analysis and Technique for Order Preference by Similarity to an Ideal Solution and the data of other 20 cities in Guangdong province,Hong Kong and Macao.The research showed that the competitiveness of Dongguan City has been greatly improved during the decade of 2006–2015,and the regional cities in Guangdong Province had significant differences,which are reflected in the two dimensions of urban internal node competitiveness(NC)and external competitiveness of urban network(EC).Based on this,this study further analyzed Dongguan’s urban competitiveness from two dimensions of NC and EC,and took Dongguan Songshan Lake High-tech Zone as an example to study how to promote Dongguan’s urban competitiveness from the industrial level.
基金Supported by Soft Science United Fund of Technology Department of Guizhou Province([2010]2LKC2015)Special Program of Humanities and Social Sciences of Technology Department of Guizhou Province(09ZX119)
文摘17 indices are selected,such as the growth rate of total regional output value,the proportion of tertiary industry in GDP,per capita financial expenditure,and soil erosion rate of Guizhou Province in 2009.According to the relevant indices data of statistical yearbook and governmental website,by using the method of factor analysis and the method of cluster analysis,we assess the competitiveness of county economy in 88 counties of Guizhou Province.The results show that the competitiveness of county economy in Guizhou Province is impacted by factors of location and economic foundation.In addition,the resources environment,economic structure,economic developmental speed and other factors also impact the competitiveness of county economy in Guizhou Province.Based on these,in the light of the developmental characteristics of different counties in conjunction with different developmental advantages in different regions,we should adopt different developmental strategies according to local conditions,which is significant to rapid,healthy and sustainable development of county economy in Guizhou Province.
基金Supported by the Natural Science Foundation of China (70803032)
文摘Connotation of land competitiveness is expatiated from both the narrow sense and broad sense. Evaluation index system of land competitiveness is established according to the 2008 China Statistical Yearbook and 2008 China Land Resources Statistical Yearbook. Efficiency Coefficient Method and Principal Component Analysis Method are used to evaluate the land competitiveness of 31 provincial units in China. Result shows that in the year 2007, land competitiveness gradually decreases from southeast to northwest. The land competitiveness and GDP per unit land have significant negative correlation. The rank of approved new construction land has low positive correlation with the rank of land competitiveness in China. This indicates that there is little correlation between the allocation of regional new construction land and the land use efficiency. Therefore, it is suggested that regional allocation of new construction land should be treated differently based on the evaluation result of land competitiveness.
基金Supported by Major Policy Research Project of Chinese Association for Science and Technology (2009ZCYJ20-A)
文摘The empirical analyses on agricultural industrialization pattern and local animal husbandry in northwestern areas show that the industrialization development of husbandry in northwestern areas faces international and national competitive pressures. The survival ability and competitive ability are the key points of husbandry industrialization. The paper, having a lamb fattening professional cooperatives in Hainan sub-prefecture of Qinghai Province as the example, introduces the general conditions of the establishment and development of cooperatives and points out the advantages and disadvantages of husbandry in Qinghai Province. The paper analyzes the competitive advantages of Hongyuan Lamb Fattening Cooperatives through five forces mode of Michael Port, putting forward countermeasures and upgrading the competitiveness of Hongyuan Lamb Fattening Competitive.
文摘Common prosperity,an important goal of human development,increasingly has to be achieved through the common prosperity of cities.The research into and discovery of the determinants which create differences in urban economic competitiveness is of great signi ficance as,thereby,the research and expected discovery can help with the formulation of relevant policies for development,competition,and cooperation to promote win-win conditions among cities.However,such research is still rare.Based on the economic competitiveness data of 1,007 cities,this paper uses OLS regression and Shapley-value based decompositions regression to analyze factors affecting the economic competitiveness of global cities and differences that the cities made.Combined with quantile regression,studying the law of changing of each factor's effect on cities with different levels of economic competitiveness is of theoretical and practical signi ficance.The study findings are as follows.(1)The variability of global urban economic competitiveness is quite large.Cities in North America and Europe are still the benchmarks of global urban economic prosperity.(2)Financial services,technological innovation,industrial system,business environment,institutional environment,infrastructure,among other factors,have signi ficant impacts on the economic competitiveness of cities.(3)The primary factor that in fluenced the variability in economic competitiveness is technological innovation.(4)The ranking of the main in fluencing factors varied slightly between cities at different levels of economic competitiveness.These indicate that the international community should promote innovation in and diffusion of science and technology to achieve common prosperity by narrowing the gap between cities.The relevant decision-making departments,e.g.urban planning departments with strong economic and finance expertise of the cities in different development zones should adopt different measures in accordance with their actual situations.
文摘Under the umbrella of WTO, the reduction in trade barriers has forced the policy makers to focus on the export competitiveness. Rice is an important source for foreign exchange earnings for the economy of Pakistan, keeping in mind of this fact, the competitiveness of Pakistan's rice with other major exporters was examined by applying revealed competitive advantage. The domestic consumption trends of rice among the major rice exporting countries were also analyzed in the current study. The results revealed that as compare to other major exporters of rice in the world, Pakistan had high competitive and comparative advantage in the production of rice. The comparison of the movements in comparative advantage indices for Pakistan with the major world rice competitors/exporters showed that Pakistan possessed relatively high comparative and competitive advantages in rice production. The declining domestic per capita consumption of rice and increasing trends in competitiveness for Pakistan clearly revealed the expected potential of higher growth which meant that rice exports from Pakistan could continue to play an important role for the earnings of foreign exchange. In order to exploit the potential benefits of rice exports, we need to strengthen the competitiveness in rice sector of Pakistan.
基金supported by the Key Projects of the National Social Science Foundation of China(NSSF)(Grant No.18VSJ056 and 14AZD058)Key Project of the Key Research Center for Humanities and Social Sciences of the Ministry of Education(Grant No.17JJD79001)
文摘Based on the World Input-Output Database(WIOD), this paper conducts a forward-linkage decomposition of value-added in trade to estimate China's service value-added exports and its service sector's international competitiveness during 2000-2014. Result indicates that during the sample period, China's service exports measured by forward-linkage decomposition method accounted for around 35% in its total export. While the value of services exported directly through the service sector accounted for a falling share, the value of services exported through other sectors represented an increasing share. China ranks second in the world in terms of market share of service exports. However, the revealed comparative advantage(RCA) of China's service exports and export sophistication remains limited.
基金Supported by 2010 Research Project of Guangxi Education Department(201010LX411)Research Project of Guangxi University of Finance and Economics(2010A01)
文摘On the basis of the developmental status of Guangxi distinctive agriculture,the key selection of developing Guangxi distinctive agriculture is analyzed.Its distinctive agriculture contains distinctive plantation,distinctive forestry and distinctive breeding.Based on the analysis,two display indices,domestic comparative advantages index and domestic competitiveness,are selected to analyze the competitiveness of Guangxi distinctive agriculture.The results show that at present the overall competitiveness of Guangxi distinctive agriculture is strong,but its competitiveness is reflected on resource advantages and most of the resources are primary agro-products.Accordingly,in the future,Guangxi distinctive agriculture should adopt non-equilibrium developmental strategy;take the great-leap-forward developmental path;apply modern production elements to increase the competitiveness of Guangxi distinctive agriculture.It should lay stress on "three innovation",which includes organization innovation,developing distinctive agricultural firms ;technology innovation,enlarging the scope and scale of agricultural listed companies;financial fund-raising innovation,transforming traditional distinctive agriculture by using high and new technology.
文摘Glyphosate and glufosinate resistant (RR/LL) volunteer corn has become a problem when hybrid RR/LL corn follows hybrid RR/LL corn in the rotation. A total of six field trials were conducted over a three-year period (2008 to 2010) in southwestern Ontario to 1) evaluate the competitiveness of volunteer RR/LL corn in hybrid RR/LL corn, and 2) determine how to control volunteer RR/LL corn in hybrid RR/LL corn. The predicted volunteer RR/LL corn density to reduce hybrid RR/LL corn yield by 5% was 1.7 volunteer RR/LL corn plants m-2. There was no crop injury in hybrid RR/LL corn with herbicides evaluated at 1 and 2 WAA except for rimsulfuron(15 g·ai·ha-1) and foramsulfuron (35 g·ai·ha-1) which caused as much as 5% and 11% injury in hybrid RR/LL corn, respectively. Glyphosate (1800 g·ae·ha-1), glufosinate(500 g·ae·ha-1) and glyphosate + glufosinate (1800 + 500 g·ae·ha-1) provided up to 18%, 10% and 21% control of volunteer RR/LL corn, respectively. The POST application of rimsulfuron (15 g·ai·ha-1), nicosulfuron (25 g·ai·ha-1), nicosulfuron/rimsulfuron (25 g·ai·ha-1), foramsulfuron (35 g·ai·ha-1), and primisulfuron/dicamba (166 g·ai·ha-1) did not provided any control of volunteer RR/LL corn. Glyphosate and glyphosate + glufosinate reduced volunteer corn density 26% and 30%, respectively. The other herbicides evaluated did not reduce volunteer RR/LL corn density compared to the weedy control. None of the herbicides evaluated reduced volunteer RR/LL corn cob numbers compared to the weedy control. Glyphosate + glufosinate applied POST reduced volunteer RR/LL corn yield 35% compared to the weedy control but other herbicides evaluated caused no reduction in volunteer RR/LL corn yield compared to the weedy control. Glyphosate applied POST resulted in hybrid RR/LL corn yield equivalent to the weed free control but all other herbicide treatments resulted hybrid RR/LL corn yield equivalent to the weedy control. This research concludes that volunteer RR/LL corn can be very competitive with RR/LL hybrid corn. None of the herbicides evaluated provided adequate control of volunteer RR/LL corn in hybrid RR/LL corn.
基金Supported by Youth Foundation for Humanity and Social Science Research of Minitary of Education (10YJC30255)Foundation for Humanity and Social Science Research of Colleges and Universities in Jiangxi (GL0911)
文摘Through reviewing the viewpoints of former scholars, the connotation and features of supply chain of agricultural industrial cluster are introduced. The agricultural industrial cluster model constituted by core network and supporting network is constructed. Three operation models of this kind of supply chain is described: the model takes wholesale market of agricultural products as the core; the model take pillar industries of agricultural industrialization as core; model takes the chains of retail enterprises as core. The competitiveness of agricultural industrial cluster is researched. The research assumes that the competiveness of supply chain of agricultural industrial cluster is mainly represented to make the agricultural industrial cluster to acquire more capabilities in terms of innovation and knowledge sharing capability, resource allocation capability, agile market adaptability and distinct value creation capability.
