This paper investigates the impact of provincial innovation-driven efficiency on the expansion of regional Outward Foreign Direct Investment(OFDI)flows within the context of China’s economy during the period 2011 to ...This paper investigates the impact of provincial innovation-driven efficiency on the expansion of regional Outward Foreign Direct Investment(OFDI)flows within the context of China’s economy during the period 2011 to 2020 by measuring the innovation-driven efficiency and business environment index using the DEA-Malmquist index and the combined CRITIC weighting method from the new perspective of business environment improvement.The findings reveal that:(a)There is an inverted U-shaped relationship between provincial innovation-driven efficiency and regional OFDI flows.This increase in innovation-driven efficiency can promote OFDI expansion of the region by improving its business environment.(b)The improvement of the business environments plays a significant intermediary and synergistic role in OFDI expansion driven by improved innovation efficiency.(c)The study of regional heterogeneity suggests that the central region enjoys the longest window period in terms of innovation-driven OFDI expansion,followed by the eastern region while the western region has the shortest window period.The improvement of the business environment in the western region is more effective in driving regional OFDI expansion.This conclusion remained true after the robustness test.In conclusion,this paper offers a few policy recommendations that can help Chinese capital of various kinds go global more effectively.展开更多
By constructing a comprehensive evaluation system for Guangdong’s foreign trade business environment based on the annual data from 2015 to 2019,factor analysis and entropy weight method are adopted to analyze Guangd...By constructing a comprehensive evaluation system for Guangdong’s foreign trade business environment based on the annual data from 2015 to 2019,factor analysis and entropy weight method are adopted to analyze Guangdong’s foreign trade business environment in recent years.This study discusses the aspects that the government should focus on in order to improve the foreign trade business environment more effectively.The results of the study are as follows:first,the overall differences in the foreign trade business environment of the Pearl River Delta urban agglomeration are small,and the cities play an important role in improving the foreign trade business environment;second,the foreign trade business environment is not fully constrained by economic development,so the foreign trade business environment can be more advanced than the city’s economic level and serve as the impetus for economic growth;third,there has been an improvement in how the attractiveness of foreign capital influences the foreign trade business environment.The Regional Comprehensive Economic Partnership(RCEP)agreement should be implemented in local cities,in order to construct an institutional framework of fair competition,enhance the transparency of investment barriers,and strengthen the protection of foreign investors’rights.展开更多
Since 2013,optimizing the business environment has become China's national strategy.In recent years,the Party and the government have continuously introduced a series of new measures such as the'"streamli...Since 2013,optimizing the business environment has become China's national strategy.In recent years,the Party and the government have continuously introduced a series of new measures such as the'"streamline administration,delegate power,strengthen regulation,and improve services55 reform to promote the continuous optimization of the business environment.As an important part of the business environment,the tax business environment is of great significance to improve the business environment and promote economic development.By analyzing the current situation of the tax business environment in China,this article discusses the existing problems in the process of optimizing tax business environment in China.Taking Shunde Taxation Bureau's innovative reform of tax business environment optimization as an example,this article introduces the practical innovation and promotion of optimizing tax business environment from four aspects:promoting convenience,digitalization,legalization,and intensive reform,in order to provide relevant experience for the optimization of tax business environment in other areas of China.展开更多
In this paper, we conduct research on the Yunnan small and the medium-sized enterprise economic management mode innovation under micro business environment. Small industrial clusters become the root cause of the impor...In this paper, we conduct research on the Yunnan small and the medium-sized enterprise economic management mode innovation under micro business environment. Small industrial clusters become the root cause of the important characteristics in today’s world economic development and so to speak, with the international competitiveness of industry cluster, which is the important guarantee of stay ahead in the developed countries and districts, the basic carrier of developing countries play a comparative advantage is the basis of transition countries achieve success across the industry. Under the impetus of the practice of the industrial cluster, constantly enrich and deepen the industrial cluster theory, formed the theoretical system of the system. Our research combines the theory of the micro business environment to propose the new business pattern that is meaningful.展开更多
The recent years have witnessed the continued improvement of China’s business environment.According to the 2019 Business Environment Report the issued by the World Bank,China ranked the third in the improvement of ea...The recent years have witnessed the continued improvement of China’s business environment.According to the 2019 Business Environment Report the issued by the World Bank,China ranked the third in the improvement of ease of doing business and ranked at the top in the Asia-Pacific region.The recently-issued China Intellectual Property Rights Protection and Business Apportionment Progress Report(2018)also shows that China has made tangible progress in law enforcement when it comes to the protection of intellectual property rights.展开更多
According to the latest Blue Book on China’s Business Environment Index(2021)which was released recently,Shanghai topped the rankings in terms of the business environment in China,as it had a very balanced performanc...According to the latest Blue Book on China’s Business Environment Index(2021)which was released recently,Shanghai topped the rankings in terms of the business environment in China,as it had a very balanced performance in all five of the following primary indicators:public services,market environment,government environment,financing environment,and inclusive innovation.Moreover,Shanghai also took the lead in the scores of secondary indicators,namely,the open environment,foreign trade dependency,number of financing events and the total amount of financing.展开更多
Energy cooperation is an important part of the Belt and Road Initiative.Countries along the Belt and Road are complementary with China in resources.Therefore,energy cooperation cannot only expand diversified channels ...Energy cooperation is an important part of the Belt and Road Initiative.Countries along the Belt and Road are complementary with China in resources.Therefore,energy cooperation cannot only expand diversified channels for energy import in China,but also effectively drive the economic development of countries along the Belt and Road.At present,the energy cooperation between China and countries along the Belt and Road is still thwarted by China and foreign business environment.Based on the analysis of the current situation of energy cooperation,this paper makes a further analysis of problems and puts forward measures to promote energy cooperation from the perspective of improving the business environment.展开更多
China is actively upgrading its industrial structure through industries transferring between developed and undeveloped areas;however,the overall level of the national value chain is still not high,and the asymmetric c...China is actively upgrading its industrial structure through industries transferring between developed and undeveloped areas;however,the overall level of the national value chain is still not high,and the asymmetric competition pattern between the upstream and the downstream has not been broken.Therefore,this paper establishes a competitive equilibrium model for the production of manufacturing enterprises,with factor price distortion,under the condition of constant returns to scale.The authors derive the relative distortion coefficients of each factor price,calculate the misallocation indices of capital and labor,and construct an industry resource misallocation measure.Furthermore,this paper applies the regional value-added decomposition model to calculate the national value chain index and matches the market index of the China Market Index Database with the Chinese Industrial Enterprises Database and the Inter-Regional Input-Output Tables through quantitative analysis.From the perspective of the national value chain,the authors study the improvement effect and mechanism of the business environment on the resource allocation in industry.The study shows that industry resource allocation will be improved by 17.89%if the business environment level is improved by one standard deviation.This effect is most prevalent in the eastern and central regions,not so much in the west;the effect of downstream industries in the national value chain is higher than that of upstream industries;the improvement effect on capital allocation is higher in downstream industries than in the upstream industries;and the improvement effect on labor misallocation is basically the same in both the upstream and the downstream.Compared with labor intensive industries,capital intensive industries are more influenced by the national value chain,while the effect of upstream industries is weaker.At the same time,it is well documented that participation in the global value chain can improve the efficiency of regional resource allocation,and the construction of high-tech zones can improve resource allocation for both upstream and downstream industries.Based on the results of study,the authors propose suggestions for optimizing business environments,suiting the national value chain construction,and improving resource allocation in the future.展开更多
This study used a two-step system generalized method of moments to examine the impact of the business environment in the Belt and Road countries on outward foreign direct investment(OFDI)of China while presenting a de...This study used a two-step system generalized method of moments to examine the impact of the business environment in the Belt and Road countries on outward foreign direct investment(OFDI)of China while presenting a deeper investigation into the spatial characteristics of OFDI through a spatial error model.The results revealed that the impact mentioned above varies with different investment motivations.If Chinese businesses are motivated by local consumer markets or seeking a human workforce to make an outward direct investment,they will choose countries with poor business environments.They will select countries with stable business environments for their natural resources or strategic assets.Significant spatial agglomeration exists in China's OFDI in the countries and regions along the routes,while substantial evidence is absent on the business environment investment effect with different motivations.Finally,relevant recommen-dations concluded according to the study.展开更多
This article sets out framework for measures which have been taken by the Government of Ethiopia to optimize tax services in Ethiopia.A set of measures among others which potentially influence taxpayer services such a...This article sets out framework for measures which have been taken by the Government of Ethiopia to optimize tax services in Ethiopia.A set of measures among others which potentially influence taxpayer services such as legislation changes,information technology modernization,introducing compliance risk management and standard taxpayers’services are explicitly discussed.展开更多
In recent years,Zhejiang Provincial Tax Service has optimized tax-related business environment through high-quality tax services,ranking first in the National Taxpayer Satisfaction Survey for eight consecutive years.O...In recent years,Zhejiang Provincial Tax Service has optimized tax-related business environment through high-quality tax services,ranking first in the National Taxpayer Satisfaction Survey for eight consecutive years.On the basis of the achievements in protecting the legitimate rights and interests of cross-border taxpayers,targeted and tailormade measures of tax and fee services have been put forward to create an international tax-related business environment of new heightswww.britacom.org and ultimately serve the Chinese modernization.展开更多
The study assessed the mediation effect of employee training on implementation of hotel management practices for hotel business sustainability in Tanzania.Study was conducted in two cities Arusha and Dar es Salaam whe...The study assessed the mediation effect of employee training on implementation of hotel management practices for hotel business sustainability in Tanzania.Study was conducted in two cities Arusha and Dar es Salaam whereby a structured questionnaire with Likert scale range from one to five was used to collect information from the sample of 400 hotels’managers.The findings of the hypothesis indicate that two hypotheses were significant at significant at p<0.001 and one was not significant.The first hypothesis found that environmental management practice has positive effect on business sustainability highly significant at p<0.001.The second hypothesis was that there was positive relationship between environmental management practices and employee training at highly significant of p<0.001 and was accepted.Third hypothesis was that employee training has no mediation effect on the hotel business sustainability whereby p>0.05 hence rejected.It was also found the direct effect was significance at p<0.01 while indirect effect was not significance at p>0.05 and total effect was significance at p<0.01.It was concluded that,employees’training does not mediate the implementation of hotel environmental management practices for sustainability of hotel business in Tanzania.展开更多
The primary objective of this study was to design and size a sustainable sanitation solution for the Ndiebene Gandiol 1 school located in the eponymous commune in northern Senegal. Field investigations led to the coll...The primary objective of this study was to design and size a sustainable sanitation solution for the Ndiebene Gandiol 1 school located in the eponymous commune in northern Senegal. Field investigations led to the collection of wastewater samples. Their analysis revealed specific pollutant loads, including loads of BOD5 3.6966 kgO<sub>2</sub>/day and COD of 12.8775 kgO<sub>2</sub>/day, which were central to the design phase. Following a rigorous assessment of the existing sanitation infrastructure, constructed wetland (CWs) emerged as the most appropriate ecological solution. This system, valued for its ability to effectively remove contaminants, was tailored to the specific needs of the site. Consequently, the final design of the filter extends over 217.16 m<sup>2</sup>, divided into two cells of 108.58 m<sup>2</sup> each, with dimensions of 12.77 m in length and 8.5 m in width. The depth of the filtering medium is approximately 0.60 m, meeting the standards while ensuring maximized purification. Typha, an indigenous and prolific plant known for its purification abilities, was selected as the filtering agent. Concurrently, non-crushed gravel was chosen for its proven filtration capacity. This study is the result of a combination of scientific rigor and design expertise. It provides a holistic view of sanitation for Ndiebene Gandiol. The technical specifications and dimensions of the constructed wetland filter embody an approach that marries indepth analysis and practical application, all aimed at delivering an effective and long-lasting solution to the local sanitation challenges. By integrating precise scientific data with sanitation design expertise, this study delivers a holistic solution for Ndiebene Gandiol. The detailed dimensions and specifications of the constructed wetland filter reflect a methodology that combines meticulous analysis with practical adaptation, aiming to provide an effective and sustainable response to the challenges of rural and school sanitation in the northern region of Senegal.展开更多
The ocean is one of the essential fields of national defense in the future,and more and more attention is paid to the lightweight research of Marine equipment and materials.This study it is to develop a Machine learni...The ocean is one of the essential fields of national defense in the future,and more and more attention is paid to the lightweight research of Marine equipment and materials.This study it is to develop a Machine learning(ML)-based prediction method to study the evolution of the mechanical properties of Al-Li alloys in the marine environment.We obtained the mechanical properties of Al-Li alloy samples under uniaxial tensile deformation at different exposure times through Marine exposure experiments.We obtained the strain evolution by digital image correlation(DIC).The strain field images are voxelized using 2D-Convolutional Neural Networks(CNN)autoencoders as input data for Long Short-Term Memory(LSTM)neural networks.Then,the output data of LSTM neural networks combined with corrosion features were input into the Back Propagation(BP)neural network to predict the mechanical properties of Al-Li alloys.The main conclusions are as follows:1.The variation law of mechanical properties of2297-T8 in the Marine atmosphere is revealed.With the increase in outdoor exposure test time,the tensile elastic model of 2297-T8 changes slowly,within 10%,and the tensile yield stress changes significantly,with a maximum attenuation of 23.6%.2.The prediction model can predict the strain evolution and mechanical response simultaneously with an error of less than 5%.3.This study shows that a CNN/LSTM system based on machine learning can be built to capture the corrosion characteristics of Marine exposure experiments.The results show that the relationship between corrosion characteristics and mechanical response can be predicted without considering the microstructure evolution of metal materials.展开更多
In an effort to clarify the formation mechanism of LPSO structure in Mg-Y-Zn alloy,the chemical environment and structural ordering in liquid Mg-rich Mg-Y-Zn system are investigated with the aid of ab-initio molecular...In an effort to clarify the formation mechanism of LPSO structure in Mg-Y-Zn alloy,the chemical environment and structural ordering in liquid Mg-rich Mg-Y-Zn system are investigated with the aid of ab-initio molecular dynamics simulation.In liquid Mg-rich Mg-Y alloys,the strong Mg-Y interaction is determined,which promotes the formation of fivefold symmetric local structure.For Mg-Zn alloys,the weak Mg-Zn interaction results in the fivefold symmetry weakening in the liquid structure.Due to the coexistence of Y and Zn,the strong attractive interaction is introduced in liquid Mg-Y-Zn ternary alloy,and contributes to the clustering of Mg,Y,Zn launched from Zn.What is more,the distribution of local structures becomes closer to that in pure Mg compared with that in binary Mg-Y and Mg-Zn alloys.These results should relate to the origins of the Y/Zn segregation zone and close-packed stacking mode in LPSO structure,which provides a new insight into the formation mechanism of LPSO structure at atomic level.展开更多
Light levels determine regeneration in stands and a key concern is how to regulate the light environment of different stand types to the requirements of the understory.In this study,we selected three stands typical in...Light levels determine regeneration in stands and a key concern is how to regulate the light environment of different stand types to the requirements of the understory.In this study,we selected three stands typical in south China(a Cryptomeria japonica plantation,a Quercus acutissima plantation,and a mixed stand of both)and three thinning intensities to determine the best understory light environ-ment for 3-year-old Phoebe bournei seedlings.The canopy structure,understory light environment,and photosynthe-sis and growth indicators were assessed following thin-ning.Thinning improved canopy structure and understory light availability of each stand;species composition was the reason for differences in the understory light environ-ment.Under the same thinning intensity,the mixed stand had the greatest light radiation and most balanced spectral composition.P.bournei photosynthesis and growth were closely related to the light environment;all three stands required heavy thinning to create an effective and sustained understory light environment.In a suitable understory light environment,the efficiency of light interception,absorption,and use by seedlings was enhanced,resulting in a higher carbon assimilation the main limiting factor was stomatal conductance.As a shade-avoidance signal,red/far-red radia-tion is a critical factor driving changes in photosynthesis and growth of P.bournei seedlings,and a reduction increased light absorption and use capacity and height:diameter ratios.The growth advantage transformed from diameter to height,enabling seedlings to access more light.Our findings suggest that the regeneration of shade-tolerant species such as P.bournei could be enhanced if a targeted approach to thinning based on stand type was adopted.展开更多
基金funded by the National Social Science Foundation of China-funded project “Research on the Theoretical Basis of Building a Modern Economic System in the New Era and the Construction of the Index System”(18KXS009)Sichuan’s provincial soft science project “A Study on the Path for Transformation Towards High-Quality Development in the Context of New Economy in Sichuan from the Perspective of Dual Circulation”(22JDR0261)
文摘This paper investigates the impact of provincial innovation-driven efficiency on the expansion of regional Outward Foreign Direct Investment(OFDI)flows within the context of China’s economy during the period 2011 to 2020 by measuring the innovation-driven efficiency and business environment index using the DEA-Malmquist index and the combined CRITIC weighting method from the new perspective of business environment improvement.The findings reveal that:(a)There is an inverted U-shaped relationship between provincial innovation-driven efficiency and regional OFDI flows.This increase in innovation-driven efficiency can promote OFDI expansion of the region by improving its business environment.(b)The improvement of the business environments plays a significant intermediary and synergistic role in OFDI expansion driven by improved innovation efficiency.(c)The study of regional heterogeneity suggests that the central region enjoys the longest window period in terms of innovation-driven OFDI expansion,followed by the eastern region while the western region has the shortest window period.The improvement of the business environment in the western region is more effective in driving regional OFDI expansion.This conclusion remained true after the robustness test.In conclusion,this paper offers a few policy recommendations that can help Chinese capital of various kinds go global more effectively.
文摘By constructing a comprehensive evaluation system for Guangdong’s foreign trade business environment based on the annual data from 2015 to 2019,factor analysis and entropy weight method are adopted to analyze Guangdong’s foreign trade business environment in recent years.This study discusses the aspects that the government should focus on in order to improve the foreign trade business environment more effectively.The results of the study are as follows:first,the overall differences in the foreign trade business environment of the Pearl River Delta urban agglomeration are small,and the cities play an important role in improving the foreign trade business environment;second,the foreign trade business environment is not fully constrained by economic development,so the foreign trade business environment can be more advanced than the city’s economic level and serve as the impetus for economic growth;third,there has been an improvement in how the attractiveness of foreign capital influences the foreign trade business environment.The Regional Comprehensive Economic Partnership(RCEP)agreement should be implemented in local cities,in order to construct an institutional framework of fair competition,enhance the transparency of investment barriers,and strengthen the protection of foreign investors’rights.
文摘Since 2013,optimizing the business environment has become China's national strategy.In recent years,the Party and the government have continuously introduced a series of new measures such as the'"streamline administration,delegate power,strengthen regulation,and improve services55 reform to promote the continuous optimization of the business environment.As an important part of the business environment,the tax business environment is of great significance to improve the business environment and promote economic development.By analyzing the current situation of the tax business environment in China,this article discusses the existing problems in the process of optimizing tax business environment in China.Taking Shunde Taxation Bureau's innovative reform of tax business environment optimization as an example,this article introduces the practical innovation and promotion of optimizing tax business environment from four aspects:promoting convenience,digitalization,legalization,and intensive reform,in order to provide relevant experience for the optimization of tax business environment in other areas of China.
文摘In this paper, we conduct research on the Yunnan small and the medium-sized enterprise economic management mode innovation under micro business environment. Small industrial clusters become the root cause of the important characteristics in today’s world economic development and so to speak, with the international competitiveness of industry cluster, which is the important guarantee of stay ahead in the developed countries and districts, the basic carrier of developing countries play a comparative advantage is the basis of transition countries achieve success across the industry. Under the impetus of the practice of the industrial cluster, constantly enrich and deepen the industrial cluster theory, formed the theoretical system of the system. Our research combines the theory of the micro business environment to propose the new business pattern that is meaningful.
文摘The recent years have witnessed the continued improvement of China’s business environment.According to the 2019 Business Environment Report the issued by the World Bank,China ranked the third in the improvement of ease of doing business and ranked at the top in the Asia-Pacific region.The recently-issued China Intellectual Property Rights Protection and Business Apportionment Progress Report(2018)also shows that China has made tangible progress in law enforcement when it comes to the protection of intellectual property rights.
文摘According to the latest Blue Book on China’s Business Environment Index(2021)which was released recently,Shanghai topped the rankings in terms of the business environment in China,as it had a very balanced performance in all five of the following primary indicators:public services,market environment,government environment,financing environment,and inclusive innovation.Moreover,Shanghai also took the lead in the scores of secondary indicators,namely,the open environment,foreign trade dependency,number of financing events and the total amount of financing.
基金the stage result of the project—“Creating a Marketized,Legalizedand Internationalized Business Environment”entrusted by the Publicity Department of Guangdong Provincial Party Committee
文摘Energy cooperation is an important part of the Belt and Road Initiative.Countries along the Belt and Road are complementary with China in resources.Therefore,energy cooperation cannot only expand diversified channels for energy import in China,but also effectively drive the economic development of countries along the Belt and Road.At present,the energy cooperation between China and countries along the Belt and Road is still thwarted by China and foreign business environment.Based on the analysis of the current situation of energy cooperation,this paper makes a further analysis of problems and puts forward measures to promote energy cooperation from the perspective of improving the business environment.
基金supported by the Major Program of National Fund of Philosophy and Social Science of China under Grant No.20&ZD168the National Natural Science Foundation of China under Grant No.71973102.
文摘China is actively upgrading its industrial structure through industries transferring between developed and undeveloped areas;however,the overall level of the national value chain is still not high,and the asymmetric competition pattern between the upstream and the downstream has not been broken.Therefore,this paper establishes a competitive equilibrium model for the production of manufacturing enterprises,with factor price distortion,under the condition of constant returns to scale.The authors derive the relative distortion coefficients of each factor price,calculate the misallocation indices of capital and labor,and construct an industry resource misallocation measure.Furthermore,this paper applies the regional value-added decomposition model to calculate the national value chain index and matches the market index of the China Market Index Database with the Chinese Industrial Enterprises Database and the Inter-Regional Input-Output Tables through quantitative analysis.From the perspective of the national value chain,the authors study the improvement effect and mechanism of the business environment on the resource allocation in industry.The study shows that industry resource allocation will be improved by 17.89%if the business environment level is improved by one standard deviation.This effect is most prevalent in the eastern and central regions,not so much in the west;the effect of downstream industries in the national value chain is higher than that of upstream industries;the improvement effect on capital allocation is higher in downstream industries than in the upstream industries;and the improvement effect on labor misallocation is basically the same in both the upstream and the downstream.Compared with labor intensive industries,capital intensive industries are more influenced by the national value chain,while the effect of upstream industries is weaker.At the same time,it is well documented that participation in the global value chain can improve the efficiency of regional resource allocation,and the construction of high-tech zones can improve resource allocation for both upstream and downstream industries.Based on the results of study,the authors propose suggestions for optimizing business environments,suiting the national value chain construction,and improving resource allocation in the future.
基金supported by National Social Science Foundation of China(No:19BTJ037)funded by Special Funding for Basic Operating Expenses of Universities in Zhejiang Province.
文摘This study used a two-step system generalized method of moments to examine the impact of the business environment in the Belt and Road countries on outward foreign direct investment(OFDI)of China while presenting a deeper investigation into the spatial characteristics of OFDI through a spatial error model.The results revealed that the impact mentioned above varies with different investment motivations.If Chinese businesses are motivated by local consumer markets or seeking a human workforce to make an outward direct investment,they will choose countries with poor business environments.They will select countries with stable business environments for their natural resources or strategic assets.Significant spatial agglomeration exists in China's OFDI in the countries and regions along the routes,while substantial evidence is absent on the business environment investment effect with different motivations.Finally,relevant recommen-dations concluded according to the study.
文摘This article sets out framework for measures which have been taken by the Government of Ethiopia to optimize tax services in Ethiopia.A set of measures among others which potentially influence taxpayer services such as legislation changes,information technology modernization,introducing compliance risk management and standard taxpayers’services are explicitly discussed.
文摘In recent years,Zhejiang Provincial Tax Service has optimized tax-related business environment through high-quality tax services,ranking first in the National Taxpayer Satisfaction Survey for eight consecutive years.On the basis of the achievements in protecting the legitimate rights and interests of cross-border taxpayers,targeted and tailormade measures of tax and fee services have been put forward to create an international tax-related business environment of new heightswww.britacom.org and ultimately serve the Chinese modernization.
文摘The study assessed the mediation effect of employee training on implementation of hotel management practices for hotel business sustainability in Tanzania.Study was conducted in two cities Arusha and Dar es Salaam whereby a structured questionnaire with Likert scale range from one to five was used to collect information from the sample of 400 hotels’managers.The findings of the hypothesis indicate that two hypotheses were significant at significant at p<0.001 and one was not significant.The first hypothesis found that environmental management practice has positive effect on business sustainability highly significant at p<0.001.The second hypothesis was that there was positive relationship between environmental management practices and employee training at highly significant of p<0.001 and was accepted.Third hypothesis was that employee training has no mediation effect on the hotel business sustainability whereby p>0.05 hence rejected.It was also found the direct effect was significance at p<0.01 while indirect effect was not significance at p>0.05 and total effect was significance at p<0.01.It was concluded that,employees’training does not mediate the implementation of hotel environmental management practices for sustainability of hotel business in Tanzania.
文摘The primary objective of this study was to design and size a sustainable sanitation solution for the Ndiebene Gandiol 1 school located in the eponymous commune in northern Senegal. Field investigations led to the collection of wastewater samples. Their analysis revealed specific pollutant loads, including loads of BOD5 3.6966 kgO<sub>2</sub>/day and COD of 12.8775 kgO<sub>2</sub>/day, which were central to the design phase. Following a rigorous assessment of the existing sanitation infrastructure, constructed wetland (CWs) emerged as the most appropriate ecological solution. This system, valued for its ability to effectively remove contaminants, was tailored to the specific needs of the site. Consequently, the final design of the filter extends over 217.16 m<sup>2</sup>, divided into two cells of 108.58 m<sup>2</sup> each, with dimensions of 12.77 m in length and 8.5 m in width. The depth of the filtering medium is approximately 0.60 m, meeting the standards while ensuring maximized purification. Typha, an indigenous and prolific plant known for its purification abilities, was selected as the filtering agent. Concurrently, non-crushed gravel was chosen for its proven filtration capacity. This study is the result of a combination of scientific rigor and design expertise. It provides a holistic view of sanitation for Ndiebene Gandiol. The technical specifications and dimensions of the constructed wetland filter embody an approach that marries indepth analysis and practical application, all aimed at delivering an effective and long-lasting solution to the local sanitation challenges. By integrating precise scientific data with sanitation design expertise, this study delivers a holistic solution for Ndiebene Gandiol. The detailed dimensions and specifications of the constructed wetland filter reflect a methodology that combines meticulous analysis with practical adaptation, aiming to provide an effective and sustainable response to the challenges of rural and school sanitation in the northern region of Senegal.
基金supported by the Southwest Institute of Technology and Engineering cooperation fund(Grant No.HDHDW5902020104)。
文摘The ocean is one of the essential fields of national defense in the future,and more and more attention is paid to the lightweight research of Marine equipment and materials.This study it is to develop a Machine learning(ML)-based prediction method to study the evolution of the mechanical properties of Al-Li alloys in the marine environment.We obtained the mechanical properties of Al-Li alloy samples under uniaxial tensile deformation at different exposure times through Marine exposure experiments.We obtained the strain evolution by digital image correlation(DIC).The strain field images are voxelized using 2D-Convolutional Neural Networks(CNN)autoencoders as input data for Long Short-Term Memory(LSTM)neural networks.Then,the output data of LSTM neural networks combined with corrosion features were input into the Back Propagation(BP)neural network to predict the mechanical properties of Al-Li alloys.The main conclusions are as follows:1.The variation law of mechanical properties of2297-T8 in the Marine atmosphere is revealed.With the increase in outdoor exposure test time,the tensile elastic model of 2297-T8 changes slowly,within 10%,and the tensile yield stress changes significantly,with a maximum attenuation of 23.6%.2.The prediction model can predict the strain evolution and mechanical response simultaneously with an error of less than 5%.3.This study shows that a CNN/LSTM system based on machine learning can be built to capture the corrosion characteristics of Marine exposure experiments.The results show that the relationship between corrosion characteristics and mechanical response can be predicted without considering the microstructure evolution of metal materials.
基金supported by National Natural Science Foundation of China,China(No.51901117,51801116)Youth Innovation and Technology Support Program of Shandong Provincial Colleges and Universities,China(No.2020KJA002)+2 种基金Youth Fund of Shandong Academy of Sciences,China(2020QN0021)Innovation Pilot Project for Fusion of Science,Education and Industry(International Cooperation)from Qilu University of Technology(Shandong Academy of Sciences),China(No.2020KJC-GH03)Several Policies on Promoting Collaborative Innovation and Industrialization of Achievements in Universities and Research Institutes,China(No.2019GXRC030)。
文摘In an effort to clarify the formation mechanism of LPSO structure in Mg-Y-Zn alloy,the chemical environment and structural ordering in liquid Mg-rich Mg-Y-Zn system are investigated with the aid of ab-initio molecular dynamics simulation.In liquid Mg-rich Mg-Y alloys,the strong Mg-Y interaction is determined,which promotes the formation of fivefold symmetric local structure.For Mg-Zn alloys,the weak Mg-Zn interaction results in the fivefold symmetry weakening in the liquid structure.Due to the coexistence of Y and Zn,the strong attractive interaction is introduced in liquid Mg-Y-Zn ternary alloy,and contributes to the clustering of Mg,Y,Zn launched from Zn.What is more,the distribution of local structures becomes closer to that in pure Mg compared with that in binary Mg-Y and Mg-Zn alloys.These results should relate to the origins of the Y/Zn segregation zone and close-packed stacking mode in LPSO structure,which provides a new insight into the formation mechanism of LPSO structure at atomic level.
基金This study was supported by the National Natural Science Foundation of China(Grant No.31870613)Guizhou Province High-level Innovative Talents Training Plan Project(2016)5661.
文摘Light levels determine regeneration in stands and a key concern is how to regulate the light environment of different stand types to the requirements of the understory.In this study,we selected three stands typical in south China(a Cryptomeria japonica plantation,a Quercus acutissima plantation,and a mixed stand of both)and three thinning intensities to determine the best understory light environ-ment for 3-year-old Phoebe bournei seedlings.The canopy structure,understory light environment,and photosynthe-sis and growth indicators were assessed following thin-ning.Thinning improved canopy structure and understory light availability of each stand;species composition was the reason for differences in the understory light environ-ment.Under the same thinning intensity,the mixed stand had the greatest light radiation and most balanced spectral composition.P.bournei photosynthesis and growth were closely related to the light environment;all three stands required heavy thinning to create an effective and sustained understory light environment.In a suitable understory light environment,the efficiency of light interception,absorption,and use by seedlings was enhanced,resulting in a higher carbon assimilation the main limiting factor was stomatal conductance.As a shade-avoidance signal,red/far-red radia-tion is a critical factor driving changes in photosynthesis and growth of P.bournei seedlings,and a reduction increased light absorption and use capacity and height:diameter ratios.The growth advantage transformed from diameter to height,enabling seedlings to access more light.Our findings suggest that the regeneration of shade-tolerant species such as P.bournei could be enhanced if a targeted approach to thinning based on stand type was adopted.
