Earthquake-induced landslides have always been a hot research topic in the field of geosciences.However,there have been few bibliometric analyses on this topic.To systematically understand the research status,this stu...Earthquake-induced landslides have always been a hot research topic in the field of geosciences.However,there have been few bibliometric analyses on this topic.To systematically understand the research status,this study is based on bibliometrics and extensively uses visualization analysis techniques.It combines quantitative and qualitative methods to conduct an in-depth analysis of 5016 papers collected from the Web of Science(www.webofscience.com).The results revealed that:(1)The number of papers on earthquake-induced landslides is steadily increasing,and is expected to continue to rise.(2)Countries prone to frequent earthquakes have made significant contributions to the research on earthquake-induced landslides,and the frequent and effective cooperation among these countries has had a very positive impact on promoting landslide study.(3)Research on earthquake-induced landslides is no longer limited to the field of geology,and the future direction is to integrate knowledge and technical methods from multiple disciplines.In the research methods of earthquake-induced landslides,there is a gradual shift from"experience,theory"to"data-driven".This study can provide researchers in this field with information on the core research forces,evolving hot topics,and future development trends of earthquake-induced landslides.展开更多
Dance video is an innovative form that integrates dance art with imaging technology,enriching the expression of dance through techniques such as photography,videography,and special effects.This paper explores the defi...Dance video is an innovative form that integrates dance art with imaging technology,enriching the expression of dance through techniques such as photography,videography,and special effects.This paper explores the definition,current development,artistic expression,social impact,and future trends of dance video.Through narrative construction,visual impact,emotional resonance,technological innovation,and cultural expression,dance video enhances the narrative and visual appeal of dance.In the future,dance video will focus more on the integration of virtual reality(VR)and augmented reality(AR)technologies.However,it also faces challenges such as rapid technological updates,maintaining artistic originality,and balancing commercial interests.展开更多
Modern hydrometallurgy has been developing for more than 100 years and the related articles keep piling up.Based on a bibliometric analysis of the articles in Hydrometallurgy,the most authoritative journal in the fiel...Modern hydrometallurgy has been developing for more than 100 years and the related articles keep piling up.Based on a bibliometric analysis of the articles in Hydrometallurgy,the most authoritative journal in the field of hydrometallurgy,we try to catch the research and development trends from a global perspective.Firstly,keywords burstness shows that rare earth,recycling,lithium,ionic liquid,and thorium are the hotspots in recent years,and the economic and technological reasons behind them were discussed in depth.Secondly,the proportion of biohydrometallurgy grows fast from 5%to 13%and the related articles are almost all about bioleaching.There are some new directions such as direct preparation of materials in hydrometallurgical processes and ion-imprinted techniques.Thirdly,the advanced instrument analysis methods such as XAFS(X-ray absorption fine structure),gene sequencing,and micro-CT promote the deep understanding of hydrometallurgy mechanism.Finally,the cooperation network and contribution of the main institutes were mapped.展开更多
Chinese steel industry has made significant progress on reducing fresh water consumption and CO_2/SO_2/COD（ chemical oxygen demand） /dust emissions,and improving comprehensive utilization of solid waste. Some steel ...Chinese steel industry has made significant progress on reducing fresh water consumption and CO_2/SO_2/COD（ chemical oxygen demand） /dust emissions,and improving comprehensive utilization of solid waste. Some steel companies have become topped worldwide. However,due to the large output quantity of crude steel,the whole steel industry is still a huge source of pollutants. At present,environmental protection standards are encountering challenges of lack of technical support,taxation policy and other issues. Steel industry is currently facing enormous environmental pressure. The development trends of environmental protection technologies were studied by summarizing different development stages. To realize the development targets,the industry needs to carry out its research with independent intellectual property rights,develop comprehensive management systems and establish ecological chain with other industries. This can not only raise the level of environmental protection in a broader range,but also improve the energy efficiency of iron and steel plants and increase added value of waste utilization. Finally,23 environmental protection technologies were proposed and 4 new environmental protection practices were studied.展开更多
We aim to present an overview of the status of adhesives in the wood industry, especially in the area of wood-based panels. The review summarizes the current state of research of two kinds of adhesives, i.e., syntheti...We aim to present an overview of the status of adhesives in the wood industry, especially in the area of wood-based panels. The review summarizes the current state of research of two kinds of adhesives, i.e., synthetic adhesives and natural adhesives. Synthetic adhesives, consisting of urea-formaldehyde resins （UF）, phenol-formaldehyde resins （PF）, polyvinyl acetate emulsion （PVAc） and isocyanates, are widely used. For UF, most investigations are concerned with the reduction of free formaldehyde; for PF, most studies focus on finding new chemicals to replace phenol. PVAc has poor properties, but these can be improved by a blending reactions and copolymerization with other chemicals. Isocyanate is an environmentally friendly synthetic adhesive, but also suffers from inadequate properties. Natural adhesives, such as protein/starch, lignin and tannins, have poor bonding effect that limits their level of use, but their main advantages are that they are environmentally friendly and a renewable resource. Studies of modification can improve the bonding performances and gradually cause natural adhesives to become applied in industrial production. Some proposals for future development and the importance of environmentally friendly adhesives are provided, which will be helpful in future theoretical and experimental research.展开更多
The continual growth of Chinese economy indicates that the oil demand in China will maintain a strongly rising tendency in the future. With increasing oil consumption, the contradiction between supply and demand will ...The continual growth of Chinese economy indicates that the oil demand in China will maintain a strongly rising tendency in the future. With increasing oil consumption, the contradiction between supply and demand will become more and more serious, which can be resolved by developing petroleum substitutes. This paper analyzes different influence factors, displays the development trend and probes into the strategy in developing petroleum substitutes in China.展开更多
Existing problems of sewage treatment plants in small towns were summarized firstly,and then the developing trend of construction of sewage treatment plants in small towns was discussed from the aspects of project dec...Existing problems of sewage treatment plants in small towns were summarized firstly,and then the developing trend of construction of sewage treatment plants in small towns was discussed from the aspects of project decision,site selection,design,processing technology and construction financing models. Finally,outlooks for its future development were proposed to provide reference for the construction of sewage treatment plants in small towns in future.展开更多
The major contemporary in road pavement engineering is related to the creation of green and sustainable infrastructures,e.g.,reduction of environmental impacts,increase in traffic safety,and transportation efficiency,...The major contemporary in road pavement engineering is related to the creation of green and sustainable infrastructures,e.g.,reduction of environmental impacts,increase in traffic safety,and transportation efficiency,etc.This review presents the recent trends in research and the technical solutions developed so far to address these challenges.After the analysis of research status in the past decades,a novel technology system of eco-friendly pavements is proposed considering two solutions,materials modification and structure improvement.The construction of an eco-friendly pavement can be achieved thanks to several different technologies ensuring permeable,noise-reducing,self-luminous,and exhaust-decomposing properties as well as apporting lower heat absorbing and enhanced anti-/de-icing characteristics.A systematic review of these technologies is presented pivoting on four main aspects:technical principle,material and structural composition,performance evaluation,and engineering application.The current trend in road engineering is combining the pavement infrastructure with various eco-friendly functions,e.g.,water permeability,noise reduction,low heat absorption,exhaust gas decomposition,and anti-/de-icing.Finally,the review lists the drawbacks of the existing technologies,including high cost,single function,etc.,and depicts the future developing direction and architecture of the next generation of eco-friendly pavements in which the road infrastructure should have more environmentally friendly functions than the existing technology.展开更多
This article is focused on the analysis of the international cooperation of the Russian petroleum industry and its development trend. Also discussed here are the patterns that the foreign oil companies used in acquiri...This article is focused on the analysis of the international cooperation of the Russian petroleum industry and its development trend. Also discussed here are the patterns that the foreign oil companies used in acquiring Russian petroleum assets, and the cooperation models of petroleum exploration and production in Russia. The Russian government encourages foreign oil companies to establish strategic alliances with domestic companies that keep good relations with the government. To achieve this goal, the government provides foreign companies with the space for cooperation in such aspects as advanced technology and management culture. International cooperation in petroleum industry will be further developed under the macro-control of the Russia State energy strategy. The energy cooperation between China and Russia will enter a new phase full of hopes and challenges after the past unfavorable situation is gradually overcome.展开更多
From the view point of tourist marketing, tourist features of popularity and mass, brand and sense, quality and comfort, level and difference, prevalence and society are studied, and the development trends of tourist ...From the view point of tourist marketing, tourist features of popularity and mass, brand and sense, quality and comfort, level and difference, prevalence and society are studied, and the development trends of tourist marketing policies in the 21st century are put forward in this paper. Such as combining sustainable strategies in tourist development with ecology in green marketing, combining information of tourist trends with network in knowledge marketing, combining innovation in tourist products with diversification in marketing objects, combining levels in marketing goals with integer in marketing decision, combining solid in marketing measures with flexibility in marketing policies, combining conformity in marketing channels with double directions in marketing communication and combining the systems of marketing service with culture in marketing activities.展开更多
Since its conceptualization and creation in the 1960 s, Geographic Information System(GIS) has considerably developed. As a combination of traditional and modern technology, GIS has become an important part of modern ...Since its conceptualization and creation in the 1960 s, Geographic Information System(GIS) has considerably developed. As a combination of traditional and modern technology, GIS has become an important part of modern management, decision-making, and command, contributing greatly to social progress and development. This article introduces the concepts of GIS, expounds on the GIS applications in China, and looks forward to developments in GIS technology in the future while reviewing the issues that GIS application development faces. GIS has evolved into an important branch of the information technology industry, with great vitality and broad development prospects.展开更多
A study about some physicochemical parameters of Egbe reservoir was carried out from September 2005 to December 2006. The parameters include mean temperature, pH, conductivity, alkalinity, TSS, TDS, DO and BOD which h...A study about some physicochemical parameters of Egbe reservoir was carried out from September 2005 to December 2006. The parameters include mean temperature, pH, conductivity, alkalinity, TSS, TDS, DO and BOD which have values of 28.7±0.9 ℃ ; 8.3±0.3; 831±172.5 μS/cm; 165.4±18.3 mg/L; 0.06±0.1 mg/L; 0.4±0.6 mg/L; 7.8±2.4 mg/L and 5.2±1.6mg/L, respectively. Temperature and pH were measured in the field using mercury-in-glass thermometer calibrated in degrees Celsius and pH meter, respectively. TSS and TDS were measured by grayimetric methods, while alkalinity was measured titrimetrically and DO and BOD were measured by Winkler＇s method. For the nutrients, nitrate was measured color±metrically, phosphate by Stannous Chloride method and sulphate by turbidimetric method. Mean concentration of nitrate, phosphate, and sulphate were 15.6±8.6 rag/L; 42.5±19.4 mg/L and 72.3±14.7 mg/L respectively. Nowadays, eutrophication of natural waters is one of the most significant causes of deterioration of water quality, and nitrates and phosphates are probably the key nutrients in controlling the growth of aquatic plants. Though the mean concentration of nitrates and phosphates in the reservoir water were within the acceptable limit, yet their concentrations in some locations of reservoir were high enough to encourage the growth of aquatic macrophytes which would increase productivities. Hence, it is necessary to check their further increase, and periodic monitoring and preventive measures must be adopted to save the reservoir from eutrophication.展开更多
Building skin plays an important role in reducing energy consumption,and low-carbon ecology has become the development goal of architecture all over the world.Through the dynamic control of variable components on the ...Building skin plays an important role in reducing energy consumption,and low-carbon ecology has become the development goal of architecture all over the world.Through the dynamic control of variable components on the surface,the building with dynamic adaptive building skin can better adapt to the climate,thus achieving better energy saving effects.By searching the articles in the web of science database and using CiteSpace software for visualization analysis,this paper analyzes the research process,research hotspot and research trend of dynamic adaptive building skin from the perspectives of time,quantity,distribution domain,representative experts and articles,institutions,keywords,co-citations and main research contents.It is concluded that the development trend of dynamic adaptive building skin includes the application of efficiency simulation,new materials,bionic technology,and the combination of solar photovoltaics.展开更多
From the perspective of public administration, China＇s government re tbrm coincides with China＇s 30 years of reform and opening-up. Therefore, government reform, in particular central government reform, provides us ...From the perspective of public administration, China＇s government re tbrm coincides with China＇s 30 years of reform and opening-up. Therefore, government reform, in particular central government reform, provides us another perspective to look at the past 30 years of reform and opening-up. Although China＇s central government has gone through six rounds of reform over the past three decades, goverument reforms still face major challenges. Approached from the relationship between the transformation of the social order and government reform, this paper tries to understand the basic logic behind China＇s government reform. By reviewing the history of institutional reform and analyzing current restrictions that confront China＇s government reform, this paper points out the trends of China＇s government reform. In this paper, the authors try to study the micro and macro motivations of China＇s governmental reform by using public choice theory, and briefly comment on the ＂super ministry system.＂ .展开更多
At the panel session of the 3rd Global Forum on the Development of Computer Science,attendees had an opportunity to deliberate recent issues affecting computer science departments as a result of the recent growth in t...At the panel session of the 3rd Global Forum on the Development of Computer Science,attendees had an opportunity to deliberate recent issues affecting computer science departments as a result of the recent growth in the field.6 heads of university computer science departments participated in the discussions,including the moderator,Professor Andrew Yao.The first issue was how universities are managing the growing number of applicants in addition to swelling class sizes.Several approaches were suggested,including increasing faculty hiring,implementing scalable teaching tools,and working closer with other departments through degree programs that integrate computer science with other fields.The second issue was about the position and role of computer science within broader science.Participants generally agreed that all fields are increasingly relying on computer science techniques,and that effectively disseminating these techniques to others is a key to unlocking broader scientific progress.展开更多
THE scorching weather in Beijing could not deter a group of young Africans from visiting the myriad of high-tech companies scattered across the city’s Zhongguancun Science Park(Z-Park)in late June.Tese youth represen...THE scorching weather in Beijing could not deter a group of young Africans from visiting the myriad of high-tech companies scattered across the city’s Zhongguancun Science Park(Z-Park)in late June.Tese youth representatives from 53 African countries and the African Union(AU)are also members of the Forum on China-Africa Cooperation(FOCAC).Since its establishment in 2000,FOCAC has become a vital platform to coordinate and strengthen cooperation between China and African countries.展开更多
With the globalization of the economy and the further development of the market, multinational companies are constantly stepping up the pace to catch up with the trend of the times. However, at the same time, the empl...With the globalization of the economy and the further development of the market, multinational companies are constantly stepping up the pace to catch up with the trend of the times. However, at the same time, the employee turnover rate of the enterprise is increasing with their respective development, namely job-hopping phenomenon that is quit common occurrences. How to stabilize the hearts of employees and cultivate their loyalty will naturally become a hot topic with a constant temperature of contemporary human resource management .This paper will use the analysis method that combines theoretical analysis and case-related to explore the importance of human resource management from the aspect of human resource recruitment, and the enterprise employee recruitment has a very important position in the whole process of business management and development even business survival and on the basis of it to analyze the future development trends of human resource management for the development of enterprise to enhance persistence and sustainability, so that the enterprises enable to compete successfully in the dynamic changes.展开更多
In the issue of January, 2002, the magazine "Relation Between Both Sides of the Taiwan Straits" published by the Association of the Relation Between the Both Sides of the Taiwan Straits, a signed essay was c...In the issue of January, 2002, the magazine "Relation Between Both Sides of the Taiwan Straits" published by the Association of the Relation Between the Both Sides of the Taiwan Straits, a signed essay was carried out, stating that the development of the relation between the both sides last year, anticipates the trends of such relation in the future.展开更多
Against the backdrop of profound readjustment of international political pattern as well as difficult recovery of global economy,the political situation in Latin America developed with an obvious feature of'left-w...Against the backdrop of profound readjustment of international political pattern as well as difficult recovery of global economy,the political situation in Latin America developed with an obvious feature of'left-wing declining and right-wing rising'in 2016.A series of events have taken place since the end of 2015.The left-wing political party that had ruled in Argentina for successive 12 years展开更多
基金supported by the National Natural Science Foundation of China(No.41931296)National Key R&D Program of China(No.2023YFC3007100)Tianfu Yongxing Laboratory Organized Research Project Funding(No.2023KJGG05)。
文摘Earthquake-induced landslides have always been a hot research topic in the field of geosciences.However,there have been few bibliometric analyses on this topic.To systematically understand the research status,this study is based on bibliometrics and extensively uses visualization analysis techniques.It combines quantitative and qualitative methods to conduct an in-depth analysis of 5016 papers collected from the Web of Science(www.webofscience.com).The results revealed that:(1)The number of papers on earthquake-induced landslides is steadily increasing,and is expected to continue to rise.(2)Countries prone to frequent earthquakes have made significant contributions to the research on earthquake-induced landslides,and the frequent and effective cooperation among these countries has had a very positive impact on promoting landslide study.(3)Research on earthquake-induced landslides is no longer limited to the field of geology,and the future direction is to integrate knowledge and technical methods from multiple disciplines.In the research methods of earthquake-induced landslides,there is a gradual shift from"experience,theory"to"data-driven".This study can provide researchers in this field with information on the core research forces,evolving hot topics,and future development trends of earthquake-induced landslides.
基金National Social Science Fund of the Chongqing,China(Grant No.2023PY86)。
文摘Dance video is an innovative form that integrates dance art with imaging technology,enriching the expression of dance through techniques such as photography,videography,and special effects.This paper explores the definition,current development,artistic expression,social impact,and future trends of dance video.Through narrative construction,visual impact,emotional resonance,technological innovation,and cultural expression,dance video enhances the narrative and visual appeal of dance.In the future,dance video will focus more on the integration of virtual reality(VR)and augmented reality(AR)technologies.However,it also faces challenges such as rapid technological updates,maintaining artistic originality,and balancing commercial interests.
基金Project(2019JJ40377)supported by the Natural Science Foundation of Hunan Province,ChinaProject(2020CX026)supported by the Innovation-Driven Project of Central South University,ChinaProject(51934010)supported by the Major Program of National Natural Science Foundation of China。
文摘Modern hydrometallurgy has been developing for more than 100 years and the related articles keep piling up.Based on a bibliometric analysis of the articles in Hydrometallurgy,the most authoritative journal in the field of hydrometallurgy,we try to catch the research and development trends from a global perspective.Firstly,keywords burstness shows that rare earth,recycling,lithium,ionic liquid,and thorium are the hotspots in recent years,and the economic and technological reasons behind them were discussed in depth.Secondly,the proportion of biohydrometallurgy grows fast from 5%to 13%and the related articles are almost all about bioleaching.There are some new directions such as direct preparation of materials in hydrometallurgical processes and ion-imprinted techniques.Thirdly,the advanced instrument analysis methods such as XAFS(X-ray absorption fine structure),gene sequencing,and micro-CT promote the deep understanding of hydrometallurgy mechanism.Finally,the cooperation network and contribution of the main institutes were mapped.
基金supported by National Natural Science Foundation of China(Grants No.51234003)
文摘Chinese steel industry has made significant progress on reducing fresh water consumption and CO_2/SO_2/COD（ chemical oxygen demand） /dust emissions,and improving comprehensive utilization of solid waste. Some steel companies have become topped worldwide. However,due to the large output quantity of crude steel,the whole steel industry is still a huge source of pollutants. At present,environmental protection standards are encountering challenges of lack of technical support,taxation policy and other issues. Steel industry is currently facing enormous environmental pressure. The development trends of environmental protection technologies were studied by summarizing different development stages. To realize the development targets,the industry needs to carry out its research with independent intellectual property rights,develop comprehensive management systems and establish ecological chain with other industries. This can not only raise the level of environmental protection in a broader range,but also improve the energy efficiency of iron and steel plants and increase added value of waste utilization. Finally,23 environmental protection technologies were proposed and 4 new environmental protection practices were studied.
基金supported by the Teaching Reform Key Research Project of Beijing Forestry University, China (No. BJFU2010JG014)
文摘We aim to present an overview of the status of adhesives in the wood industry, especially in the area of wood-based panels. The review summarizes the current state of research of two kinds of adhesives, i.e., synthetic adhesives and natural adhesives. Synthetic adhesives, consisting of urea-formaldehyde resins （UF）, phenol-formaldehyde resins （PF）, polyvinyl acetate emulsion （PVAc） and isocyanates, are widely used. For UF, most investigations are concerned with the reduction of free formaldehyde; for PF, most studies focus on finding new chemicals to replace phenol. PVAc has poor properties, but these can be improved by a blending reactions and copolymerization with other chemicals. Isocyanate is an environmentally friendly synthetic adhesive, but also suffers from inadequate properties. Natural adhesives, such as protein/starch, lignin and tannins, have poor bonding effect that limits their level of use, but their main advantages are that they are environmentally friendly and a renewable resource. Studies of modification can improve the bonding performances and gradually cause natural adhesives to become applied in industrial production. Some proposals for future development and the importance of environmentally friendly adhesives are provided, which will be helpful in future theoretical and experimental research.
文摘The continual growth of Chinese economy indicates that the oil demand in China will maintain a strongly rising tendency in the future. With increasing oil consumption, the contradiction between supply and demand will become more and more serious, which can be resolved by developing petroleum substitutes. This paper analyzes different influence factors, displays the development trend and probes into the strategy in developing petroleum substitutes in China.
文摘Existing problems of sewage treatment plants in small towns were summarized firstly,and then the developing trend of construction of sewage treatment plants in small towns was discussed from the aspects of project decision,site selection,design,processing technology and construction financing models. Finally,outlooks for its future development were proposed to provide reference for the construction of sewage treatment plants in small towns in future.
基金This paper was financially supported by the National Natural Science Foundation of China(52038001,52122809,51908058).
文摘The major contemporary in road pavement engineering is related to the creation of green and sustainable infrastructures,e.g.,reduction of environmental impacts,increase in traffic safety,and transportation efficiency,etc.This review presents the recent trends in research and the technical solutions developed so far to address these challenges.After the analysis of research status in the past decades,a novel technology system of eco-friendly pavements is proposed considering two solutions,materials modification and structure improvement.The construction of an eco-friendly pavement can be achieved thanks to several different technologies ensuring permeable,noise-reducing,self-luminous,and exhaust-decomposing properties as well as apporting lower heat absorbing and enhanced anti-/de-icing characteristics.A systematic review of these technologies is presented pivoting on four main aspects:technical principle,material and structural composition,performance evaluation,and engineering application.The current trend in road engineering is combining the pavement infrastructure with various eco-friendly functions,e.g.,water permeability,noise reduction,low heat absorption,exhaust gas decomposition,and anti-/de-icing.Finally,the review lists the drawbacks of the existing technologies,including high cost,single function,etc.,and depicts the future developing direction and architecture of the next generation of eco-friendly pavements in which the road infrastructure should have more environmentally friendly functions than the existing technology.
文摘This article is focused on the analysis of the international cooperation of the Russian petroleum industry and its development trend. Also discussed here are the patterns that the foreign oil companies used in acquiring Russian petroleum assets, and the cooperation models of petroleum exploration and production in Russia. The Russian government encourages foreign oil companies to establish strategic alliances with domestic companies that keep good relations with the government. To achieve this goal, the government provides foreign companies with the space for cooperation in such aspects as advanced technology and management culture. International cooperation in petroleum industry will be further developed under the macro-control of the Russia State energy strategy. The energy cooperation between China and Russia will enter a new phase full of hopes and challenges after the past unfavorable situation is gradually overcome.
基金Under the auspices of the key project of National Tourist Development Program of China for the nation's Tenth-Five Year Plan per
文摘From the view point of tourist marketing, tourist features of popularity and mass, brand and sense, quality and comfort, level and difference, prevalence and society are studied, and the development trends of tourist marketing policies in the 21st century are put forward in this paper. Such as combining sustainable strategies in tourist development with ecology in green marketing, combining information of tourist trends with network in knowledge marketing, combining innovation in tourist products with diversification in marketing objects, combining levels in marketing goals with integer in marketing decision, combining solid in marketing measures with flexibility in marketing policies, combining conformity in marketing channels with double directions in marketing communication and combining the systems of marketing service with culture in marketing activities.
基金Sponsored by National Natural Science Foundation of China(41401002)Jilin Province Funds of Social Science(2014B127)Project of Chengde Bureau of Finance(CZ2013011)
文摘Since its conceptualization and creation in the 1960 s, Geographic Information System(GIS) has considerably developed. As a combination of traditional and modern technology, GIS has become an important part of modern management, decision-making, and command, contributing greatly to social progress and development. This article introduces the concepts of GIS, expounds on the GIS applications in China, and looks forward to developments in GIS technology in the future while reviewing the issues that GIS application development faces. GIS has evolved into an important branch of the information technology industry, with great vitality and broad development prospects.
文摘A study about some physicochemical parameters of Egbe reservoir was carried out from September 2005 to December 2006. The parameters include mean temperature, pH, conductivity, alkalinity, TSS, TDS, DO and BOD which have values of 28.7±0.9 ℃ ; 8.3±0.3; 831±172.5 μS/cm; 165.4±18.3 mg/L; 0.06±0.1 mg/L; 0.4±0.6 mg/L; 7.8±2.4 mg/L and 5.2±1.6mg/L, respectively. Temperature and pH were measured in the field using mercury-in-glass thermometer calibrated in degrees Celsius and pH meter, respectively. TSS and TDS were measured by grayimetric methods, while alkalinity was measured titrimetrically and DO and BOD were measured by Winkler＇s method. For the nutrients, nitrate was measured color±metrically, phosphate by Stannous Chloride method and sulphate by turbidimetric method. Mean concentration of nitrate, phosphate, and sulphate were 15.6±8.6 rag/L; 42.5±19.4 mg/L and 72.3±14.7 mg/L respectively. Nowadays, eutrophication of natural waters is one of the most significant causes of deterioration of water quality, and nitrates and phosphates are probably the key nutrients in controlling the growth of aquatic plants. Though the mean concentration of nitrates and phosphates in the reservoir water were within the acceptable limit, yet their concentrations in some locations of reservoir were high enough to encourage the growth of aquatic macrophytes which would increase productivities. Hence, it is necessary to check their further increase, and periodic monitoring and preventive measures must be adopted to save the reservoir from eutrophication.
文摘Building skin plays an important role in reducing energy consumption,and low-carbon ecology has become the development goal of architecture all over the world.Through the dynamic control of variable components on the surface,the building with dynamic adaptive building skin can better adapt to the climate,thus achieving better energy saving effects.By searching the articles in the web of science database and using CiteSpace software for visualization analysis,this paper analyzes the research process,research hotspot and research trend of dynamic adaptive building skin from the perspectives of time,quantity,distribution domain,representative experts and articles,institutions,keywords,co-citations and main research contents.It is concluded that the development trend of dynamic adaptive building skin includes the application of efficiency simulation,new materials,bionic technology,and the combination of solar photovoltaics.
文摘From the perspective of public administration, China＇s government re tbrm coincides with China＇s 30 years of reform and opening-up. Therefore, government reform, in particular central government reform, provides us another perspective to look at the past 30 years of reform and opening-up. Although China＇s central government has gone through six rounds of reform over the past three decades, goverument reforms still face major challenges. Approached from the relationship between the transformation of the social order and government reform, this paper tries to understand the basic logic behind China＇s government reform. By reviewing the history of institutional reform and analyzing current restrictions that confront China＇s government reform, this paper points out the trends of China＇s government reform. In this paper, the authors try to study the micro and macro motivations of China＇s governmental reform by using public choice theory, and briefly comment on the ＂super ministry system.＂ .
文摘At the panel session of the 3rd Global Forum on the Development of Computer Science,attendees had an opportunity to deliberate recent issues affecting computer science departments as a result of the recent growth in the field.6 heads of university computer science departments participated in the discussions,including the moderator,Professor Andrew Yao.The first issue was how universities are managing the growing number of applicants in addition to swelling class sizes.Several approaches were suggested,including increasing faculty hiring,implementing scalable teaching tools,and working closer with other departments through degree programs that integrate computer science with other fields.The second issue was about the position and role of computer science within broader science.Participants generally agreed that all fields are increasingly relying on computer science techniques,and that effectively disseminating these techniques to others is a key to unlocking broader scientific progress.
文摘THE scorching weather in Beijing could not deter a group of young Africans from visiting the myriad of high-tech companies scattered across the city’s Zhongguancun Science Park(Z-Park)in late June.Tese youth representatives from 53 African countries and the African Union(AU)are also members of the Forum on China-Africa Cooperation(FOCAC).Since its establishment in 2000,FOCAC has become a vital platform to coordinate and strengthen cooperation between China and African countries.
文摘With the globalization of the economy and the further development of the market, multinational companies are constantly stepping up the pace to catch up with the trend of the times. However, at the same time, the employee turnover rate of the enterprise is increasing with their respective development, namely job-hopping phenomenon that is quit common occurrences. How to stabilize the hearts of employees and cultivate their loyalty will naturally become a hot topic with a constant temperature of contemporary human resource management .This paper will use the analysis method that combines theoretical analysis and case-related to explore the importance of human resource management from the aspect of human resource recruitment, and the enterprise employee recruitment has a very important position in the whole process of business management and development even business survival and on the basis of it to analyze the future development trends of human resource management for the development of enterprise to enhance persistence and sustainability, so that the enterprises enable to compete successfully in the dynamic changes.
文摘In the issue of January, 2002, the magazine "Relation Between Both Sides of the Taiwan Straits" published by the Association of the Relation Between the Both Sides of the Taiwan Straits, a signed essay was carried out, stating that the development of the relation between the both sides last year, anticipates the trends of such relation in the future.
文摘Against the backdrop of profound readjustment of international political pattern as well as difficult recovery of global economy,the political situation in Latin America developed with an obvious feature of'left-wing declining and right-wing rising'in 2016.A series of events have taken place since the end of 2015.The left-wing political party that had ruled in Argentina for successive 12 years
