Ballistic impact and sealed chamber tests were performed on the steel-encased reactive material projectile(SERMP)to understand its behind-plate overpressure effect when impacting the thin aluminum plates.The reactive ...Ballistic impact and sealed chamber tests were performed on the steel-encased reactive material projectile(SERMP)to understand its behind-plate overpressure effect when impacting the thin aluminum plates.The reactive material encased with a 1.5 mm thick 30CrMnSiNi2A steel shell was launched onto the initially sealed test chamber with a 3 mm thick 2024-T3 thin aluminum cover plate.Moreover,the overpressure signals in the test chamber were recorded by pressure sensors.The experimental results indicate an unusual behind-plate overpressure effect:as the density of the projectile increases from 6.43 g/cm^(3) to 7.58 g/cm^(3) by increasing the content of tungsten powder,although its total chemical energy decreases,it produces a higher behind-target overpressure at a lower impact velocity.A theoretical model is proposed to predict the reaction length of reactive material inside the projectile based on one-dimensional shock wave theory to understand this unexpected result.In addition,the deviation between the actual energy release and the theoretical calculation results,also the variation of overpressure rise time are analyzed and discussed.As the analyses show,when the SERMP successfully penetrates the cover plate,an increasing density of the reactive material inside the projectile always means that the delaying rarefaction wave effect,an increase of its internal pressure and strain rate levels.These factors lead to the increase of the overpressure limit velocity and reaction extent of the reactive material,while the overpressure rise time decreases.展开更多
According to the multi-project and program management theory, this paper analyzes the program generation principle and establishes a program based on progress goals. On the basis of the present situation of calculatio...According to the multi-project and program management theory, this paper analyzes the program generation principle and establishes a program based on progress goals. On the basis of the present situation of calculation of penalty for delay of the bidding section construction period with the critical path method, we studied the effects of contractor-induced delay of the bidding section construction period in detail, including the effects on the construction period of the bidding section itself, the earliest start times of the next bidding section and other subsequent bidding sections, and the construction period of the program, and then constructed a penalty model for delay of the bidding section construction period from the perspective of programs. Using the penalty model, we conducted a practical analysis of penalty for delay of the construction period of the Baoying station program in the South-to-North Water Diversion Project. The model can help determine the amount of penalty for delay of the construction period in bidding sections scientifically and reasonably,展开更多
Risk management in Botswana has been very ineffective at assisting projects to be on time, on budget, and meeting client＇s/buyer＇s expectations. Traditional risk management attempts to manage, control, and direct a ...Risk management in Botswana has been very ineffective at assisting projects to be on time, on budget, and meeting client＇s/buyer＇s expectations. Traditional risk management attempts to manage, control, and direct a project through various phases, from planning and design, through procurement, and to construction. However, the risk management in Botswana seems to be either not implemented or not successful. The project performance in Botswana has a poor performance record. The researchers are attempting to identify why the traditional project/risk management is not working. In analyzing the problem in Botswana, the researchers discovered that the traditional risk management model was theoretically unsound, and designed a new project and risk model, with an entirely different approach to risk. The new model is an outgrowth of the highly successful Performance Information Procurement System （PIPS） and the Information Measurement Theory （IMT）/Kashiwagi Solution Model （KSM） concepts. The approach has been presented to some Botswana clients and academics and has received a favorable response. The development of the new risk model will lead to a huge change in the paradigm for delivering projects in Botswana. The theoretical development of the new risk model is ongoing at the University of Botswana as a part of a doctoral dissertation.展开更多
The Hong Kong-Zhuhai-Macao （HZM） Bridge is located at the Pearl River estuary and has a total length of 55 km. The HZM Bridge＇s main navigational crossing is by way of two 100 000 m2 artificial islands and a 6.7 km...The Hong Kong-Zhuhai-Macao （HZM） Bridge is located at the Pearl River estuary and has a total length of 55 km. The HZM Bridge＇s main navigational crossing is by way of two 100 000 m2 artificial islands and a 6.7 km long undersea tunnel, which are the link＇s most critical parts.展开更多
At 09:15 local time on May 13,2018 in the Republic of Mozambique,Li Zhanshu,a member of the Standing Committee of the Political Bureau of the CPC Central Committee and Chairman of the Standing Committee of the Nationa...At 09:15 local time on May 13,2018 in the Republic of Mozambique,Li Zhanshu,a member of the Standing Committee of the Political Bureau of the CPC Central Committee and Chairman of the Standing Committee of the National People's Congress (NPC),and Veronica Macamo,Speaker of the Republic of Mozambique,attended the founding ceremony of the Chinese aid project for the Confucius Institute and Media Arts Institute in Mozambique.展开更多
A research group at the University of Botswana has been investigating how culture and construction delivery system stability affect the Botswana construction industry performance. The government of Botswana is attempt...A research group at the University of Botswana has been investigating how culture and construction delivery system stability affect the Botswana construction industry performance. The government of Botswana is attempting to increase the construction performance and sustainability of the Botswana construction industry in an environment of local contractors who do not seem to have the expertise and experience. Currently, the Botswana industry is heavily dependent on foreign contractors. The researchers are trying to identify if the problem is the underdeveloped industry and Botswana culture, or potentially the combination of culture and unstable delivery system, and can a stable delivery system raise the performance of Botswana contractors. The two potential areas of interest are the country culture, and the project delivery/management model. The authors are using deductive logic, logical and simplistic models, and dominant or extreme information to minimizing the need to get into a long drawn out study of details which may be difficult to obtain and not necessarily solve the issue. The objective of the paper is to identify the best method to increase the performance of the construction industry, addressing both the cultural and delivery system problems. The preliminary measurement of the success of the solution is the acceptance of the concepts by major users in Botswana. This paper will propose the potential solution, which will be tested starting January 2011. If this solution is valid, it has a tremendous potential in underdeveloped countries.展开更多
The construction of water conservancy projects should commence during optimal atmospheric conditions and non-flood period to ensure completion before the flood season begin in summer.In most areas of Northern China,th...The construction of water conservancy projects should commence during optimal atmospheric conditions and non-flood period to ensure completion before the flood season begin in summer.In most areas of Northern China,the temperature during winter remain at lower level,in which environmental factors play the most important role in the construction of water conservancy projects.In particular,low temperature directly affects the strength of concrete and delays its solidification,this highly affects the quality and progress of concrete construction.In order to overcome this barrier,better planning,for reasonable and effective construction techniques and targeted control measures should be adopted to reduce the adverse effects of low temperature to assure a strong and safe architecture.展开更多
This paper addresses the integrated processes of planning and scheduling of projects using technologies advanced tools as means for managing change in the era of the 4IR.The paper explores the traditional project mana...This paper addresses the integrated processes of planning and scheduling of projects using technologies advanced tools as means for managing change in the era of the 4IR.The paper explores the traditional project management planning and scheduling tools in conjunction with what technology has to offer,to bridge the gap between the traditional project management planning and scheduling tools and what the modern-day business market demands.An analysis of literature covering a wide range of theoretic and empirical studies was performed.The theories underlying various planning and scheduling methods were analysed in relation to the design of projects.A descriptive quantitative secondary data was used as a tool to assess the impact of technology on project planning for scheduling.The analysis of the study’s data was conducted using the principles of cross-tabulation.Inferences were drawn on the significant impact of the use of advanced technological tools on project planning for scheduling in current business time.Organisations can make use of the findings of this study to correctly apply the available advanced technological tools for more efficient schedule management planning to enhance the successful delivery of their projects.Further,this research can be used to provide learning opportunities for new and inexperienced planners and schedulers,and as a basis for further research in this field of knowledge.展开更多
At present, China's economic development is very rapid, the development of construction projects have been significantly improved. The rapid development of social economy has promoted the rapid development of the ...At present, China's economic development is very rapid, the development of construction projects have been significantly improved. The rapid development of social economy has promoted the rapid development of the construction industry. At the same time, the construction of engineering projects has also brought new challenges, among which the most serious challenge is how to manage the whole process of cost consultation, which has a significant impact on the social economy, enterprise development and individuals. The project consulting management process in the whole project construction not only has a direct impact on the profit of the enterprise, but also has an impact on the effective management of the company's resources. In this respect, it is important and beneficial to study and analyze the consulting management and cost management in the whole construction process of engineering projects.展开更多
With the continuous expansion of the production scale of water conservancy and hydropower projects, the complexity of engineering structure and construction technology is getting higher and higher, which brings great ...With the continuous expansion of the production scale of water conservancy and hydropower projects, the complexity of engineering structure and construction technology is getting higher and higher, which brings great challenges to the water conservancy and hydropower construction management and the safety management of the construction site. Therefore, in the future development process of water conservancy and hydropower projects, we should pay more attention to safety management, strengthen the identification, analysis and evaluation of hazard sources on the construction site, and formulate corresponding control measures according to the specific situation of hazard sources, so as to reduce the loss of life and property, and ensure the stable development of the whole water conservancy and hydropower industry.展开更多
The construction quality of the initial support of the tunnel excavation is directly related to the construction safety of the tunnel excavation. The project quality supervision agency shall check the initial support ...The construction quality of the initial support of the tunnel excavation is directly related to the construction safety of the tunnel excavation. The project quality supervision agency shall check the initial support quality inspection and evaluation standards, so as to provide a basis for the quality assessment of the initial support construction.Based on the initial support of the diversion water discharge tunnel excavation, the process and unit engineering division involved in construction quality assessment, inspection items, quality requirements, inspection method, and inspection quantity, mandatory construction quality inspection, technical requirements for the reference of the participating units and quality supervisors.展开更多
The main purpose of this literature review is to understand the effectiveness and impacts of Robotics Process Automation (RPA) on the practices of Project Management (PM). For attaining the purposes of the research st...The main purpose of this literature review is to understand the effectiveness and impacts of Robotics Process Automation (RPA) on the practices of Project Management (PM). For attaining the purposes of the research study, an extensive literature review was conducted, which helped in gaining a theoretical understanding. These findings were then justified with the help of current and relevant secondary sources in the analysis section. The findings suggested that RPA is quite advantageous for implementing in varied aspects of a business, especially in the field of project management. However, it can pose several challenges, which need to be taken into due consideration by the organizations during execution such as the capabilities of the employees and the abilities of the existing systems to incorporate automation, among others. It was ultimately concluded that RPA is highly advantageous for project management teams but its effective implementation is the key to success.展开更多
In the management of engineering projects, cost control must be effectively implemented and it should be implemented in the whole process of project management. Of course, the cost control of engineering projects pres...In the management of engineering projects, cost control must be effectively implemented and it should be implemented in the whole process of project management. Of course, the cost control of engineering projects presents a strong technical, professional, which requires engineering consulting units to sum up the work experience, so as to ensure that the project cost control is more effective. Therefore, the whole process cost control of the project is mainly discussed in order to realize the fairness and fairness of the cost and to ensure the benefit of the project investment.展开更多
China's economic development has reached an unprecedented level, the level of urbanization is also rising rapidly, and the number of construction projects is increasing. With the continuous development and improve...China's economic development has reached an unprecedented level, the level of urbanization is also rising rapidly, and the number of construction projects is increasing. With the continuous development and improvement of China's socialist market economic system, the construction market has been standardized to a certain extent, and the construction project bidding system is developing towards legalization, which creates development opportunities for the construction project bidding agency service industry. The bidding agency service industry can provide professional services for construction units, which can play a very important role in project construction and promote the healthy development of the construction market and bidding towards standardization. Therefore, strengthening the quality management of construction project bidding agency has become the key work of the current construction industry. Next, the article discusses the quality management strategy of construction project bidding agency.展开更多
Based on a series of investigation and Research on the current situation of water conservancy project operation and management, this paper will point out some problems existing in the current management work for the r...Based on a series of investigation and Research on the current situation of water conservancy project operation and management, this paper will point out some problems existing in the current management work for the relevant industry. This paper expounds the actual situation of water conservancy project operation and management in the current society, and analyzes some problems that should be paid attention to in the operation and management of water conservancy projects.展开更多
Water conservancy and hydropower project and the development of our country and people's livelihood has a close connection, but through the actual investigation can be found that there are many problems in the con...Water conservancy and hydropower project and the development of our country and people's livelihood has a close connection, but through the actual investigation can be found that there are many problems in the construction management of the project, the point is extremely unfavorable to ensure the quality of the project. Therefore, in order to improve the construction quality of water conservancy and hydropower projects and fully reflect their social benefits, this paper analyzes the problems existing in the construction management of water conservancy and hydropower projects through the analysis of actual cases and investigations, and focuses on the study of countermeasures, in order to provide a reliable basis for staff to carry out their work.展开更多
Traffic forecasting with high precision aids Intelligent Transport Systems(ITS)in formulating and optimizing traffic management strategies.The algorithms used for tuning the hyperparameters of the deep learning models...Traffic forecasting with high precision aids Intelligent Transport Systems(ITS)in formulating and optimizing traffic management strategies.The algorithms used for tuning the hyperparameters of the deep learning models often have accurate results at the expense of high computational complexity.To address this problem,this paper uses the Tree-structured Parzen Estimator(TPE)to tune the hyperparameters of the Long Short-term Memory(LSTM)deep learning framework.The Tree-structured Parzen Estimator(TPE)uses a probabilistic approach with an adaptive searching mechanism by classifying the objective function values into good and bad samples.This ensures fast convergence in tuning the hyperparameter values in the deep learning model for performing prediction while still maintaining a certain degree of accuracy.It also overcomes the problem of converging to local optima and avoids timeconsuming random search and,therefore,avoids high computational complexity in prediction accuracy.The proposed scheme first performs data smoothing and normalization on the input data,which is then fed to the input of the TPE for tuning the hyperparameters.The traffic data is then input to the LSTM model with tuned parameters to perform the traffic prediction.The three optimizers:Adaptive Moment Estimation(Adam),Root Mean Square Propagation(RMSProp),and Stochastic Gradient Descend with Momentum(SGDM)are also evaluated for accuracy prediction and the best optimizer is then chosen for final traffic prediction in TPE-LSTM model.Simulation results verify the effectiveness of the proposed model in terms of accuracy of prediction over the benchmark schemes.展开更多
Public-and private-sector organizations have adopted artificial intelligence(AI)to meet the challenges of the Fourth Industrial Revolution.The successful implementation of AI is a challenging task,and previous researc...Public-and private-sector organizations have adopted artificial intelligence(AI)to meet the challenges of the Fourth Industrial Revolution.The successful implementation of AI is a challenging task,and previous research has advocated the need to explore key readiness before AI implementation.The objective of this study is to identify the AI readiness factors explored by different authors in past research.To achieve this,we conducted a rigorous literature review.The approach used in the systematic literature review is also discussed.A rigorous review of 52 studies from various journals and databases(Science Direct,Springer Link,Institute of Electrical and Electronics Engineers,Emerald,and Google Scholar)identified 23 AI readiness factors.The key factors identified were mainly related to organizational information technology infrastructure,top management support,resource availability,collaborative culture,organizational size,organizational capability,compatibility,data quality,and financial budget,whereas the other 15 were potential factors in AI readiness.All of these factors should be considered before the implementation of AI in any organization.The findings also reflect a high failure rate,including AI readiness factors,which are intended to facilitate AI adoption in organizations and reduce the frequency of failures.These factors will aid management in developing an effective strategy for AI implementation in organizations.展开更多
River ethics,a significant advancement inspired by Chinese President XI Jinping's ecological civilization thought,embodies the philosophical essence of river governance and represents a legacy of innovation by gen...River ethics,a significant advancement inspired by Chinese President XI Jinping's ecological civilization thought,embodies the philosophical essence of river governance and represents a legacy of innovation by generations of water resources professionals.Rooted in river ecology,it offers a framework for advancing modern water governance systems and capabilities.This paper examines eight dimensions of river ethics to provide actionable recommendations:enhancing knowledge systems on water,rivers,and lakes;addressing critical challenges in water governance to strengthen the foundational role of water authorities in ensuring water security,resource management,ecological sustainability and environmental protection;optimizing water project planning to mitigate ecological impacts;ensuring high standards in the lifecycle management of water projects;refining water diversion strategies for precise scheduling;utilizing ecosystem complexity for river and lake restoration;implementing tiered management of water-related disasters;and driving reforms to modernize water governance systems and mechanisms.展开更多
Chloride ions(Cl^(-))have been shown to impact the long-lasting nature of reinforced concrete.However,Cl^(-)that are already bound inside the concrete will not lead to the deterioration of the concrete’s characterist...Chloride ions(Cl^(-))have been shown to impact the long-lasting nature of reinforced concrete.However,Cl^(-)that are already bound inside the concrete will not lead to the deterioration of the concrete’s characteristics.The composition of the cement-based material,including the type of cement and auxiliary materials,greatly influences the ability of the material to bind Cl^(-),and varied components result in varying binding beha-vior of the Cl^(-).Simultaneously,the Cl^(-)binding process in concrete is influenced by both the internal and exterior surroundings,as well as the curing practices.These factors impact the hydration process of the cement and the internal pore structure of the concrete.Currently,mathematical theories and molecular dynamics simulations have increasingly been employed as the prevalent methods for examining the binding behaviors of Cl^(-)in concrete.These techniques are extensively utilized for predicting the lifespan and conducting microscopic studies of reinforced concrete in Cl^(-)settings.This work proposes recommendations for future research based on a summary of experimental and simulation investigations on Cl^(-)binding.Which will offer theoretical guidance for studying the binding of Cl^(-)in cement-based materials.展开更多
基金supported by National Natural Science Founda-tion of China,grant number U1730112.
文摘Ballistic impact and sealed chamber tests were performed on the steel-encased reactive material projectile(SERMP)to understand its behind-plate overpressure effect when impacting the thin aluminum plates.The reactive material encased with a 1.5 mm thick 30CrMnSiNi2A steel shell was launched onto the initially sealed test chamber with a 3 mm thick 2024-T3 thin aluminum cover plate.Moreover,the overpressure signals in the test chamber were recorded by pressure sensors.The experimental results indicate an unusual behind-plate overpressure effect:as the density of the projectile increases from 6.43 g/cm^(3) to 7.58 g/cm^(3) by increasing the content of tungsten powder,although its total chemical energy decreases,it produces a higher behind-target overpressure at a lower impact velocity.A theoretical model is proposed to predict the reaction length of reactive material inside the projectile based on one-dimensional shock wave theory to understand this unexpected result.In addition,the deviation between the actual energy release and the theoretical calculation results,also the variation of overpressure rise time are analyzed and discussed.As the analyses show,when the SERMP successfully penetrates the cover plate,an increasing density of the reactive material inside the projectile always means that the delaying rarefaction wave effect,an increase of its internal pressure and strain rate levels.These factors lead to the increase of the overpressure limit velocity and reaction extent of the reactive material,while the overpressure rise time decreases.
基金supported by the National Science and Technology Plan of China (Major Project of the Eleventh Five-Year Plan, Grant No. 2006BAB04A13)the Philosophy and Social Science Fund of Education Department of Jiangsu Province (Grant No. 07SJD630006)+1 种基金the Third Key Discipline (Techno-Economics and Management) of the Project 211the Key Disciplines of Jiangsu Province (Engineering and Project Management)
文摘According to the multi-project and program management theory, this paper analyzes the program generation principle and establishes a program based on progress goals. On the basis of the present situation of calculation of penalty for delay of the bidding section construction period with the critical path method, we studied the effects of contractor-induced delay of the bidding section construction period in detail, including the effects on the construction period of the bidding section itself, the earliest start times of the next bidding section and other subsequent bidding sections, and the construction period of the program, and then constructed a penalty model for delay of the bidding section construction period from the perspective of programs. Using the penalty model, we conducted a practical analysis of penalty for delay of the construction period of the Baoying station program in the South-to-North Water Diversion Project. The model can help determine the amount of penalty for delay of the construction period in bidding sections scientifically and reasonably,
文摘Risk management in Botswana has been very ineffective at assisting projects to be on time, on budget, and meeting client＇s/buyer＇s expectations. Traditional risk management attempts to manage, control, and direct a project through various phases, from planning and design, through procurement, and to construction. However, the risk management in Botswana seems to be either not implemented or not successful. The project performance in Botswana has a poor performance record. The researchers are attempting to identify why the traditional project/risk management is not working. In analyzing the problem in Botswana, the researchers discovered that the traditional risk management model was theoretically unsound, and designed a new project and risk model, with an entirely different approach to risk. The new model is an outgrowth of the highly successful Performance Information Procurement System （PIPS） and the Information Measurement Theory （IMT）/Kashiwagi Solution Model （KSM） concepts. The approach has been presented to some Botswana clients and academics and has received a favorable response. The development of the new risk model will lead to a huge change in the paradigm for delivering projects in Botswana. The theoretical development of the new risk model is ongoing at the University of Botswana as a part of a doctoral dissertation.
文摘The Hong Kong-Zhuhai-Macao （HZM） Bridge is located at the Pearl River estuary and has a total length of 55 km. The HZM Bridge＇s main navigational crossing is by way of two 100 000 m2 artificial islands and a 6.7 km long undersea tunnel, which are the link＇s most critical parts.
文摘At 09:15 local time on May 13,2018 in the Republic of Mozambique,Li Zhanshu,a member of the Standing Committee of the Political Bureau of the CPC Central Committee and Chairman of the Standing Committee of the National People's Congress (NPC),and Veronica Macamo,Speaker of the Republic of Mozambique,attended the founding ceremony of the Chinese aid project for the Confucius Institute and Media Arts Institute in Mozambique.
文摘A research group at the University of Botswana has been investigating how culture and construction delivery system stability affect the Botswana construction industry performance. The government of Botswana is attempting to increase the construction performance and sustainability of the Botswana construction industry in an environment of local contractors who do not seem to have the expertise and experience. Currently, the Botswana industry is heavily dependent on foreign contractors. The researchers are trying to identify if the problem is the underdeveloped industry and Botswana culture, or potentially the combination of culture and unstable delivery system, and can a stable delivery system raise the performance of Botswana contractors. The two potential areas of interest are the country culture, and the project delivery/management model. The authors are using deductive logic, logical and simplistic models, and dominant or extreme information to minimizing the need to get into a long drawn out study of details which may be difficult to obtain and not necessarily solve the issue. The objective of the paper is to identify the best method to increase the performance of the construction industry, addressing both the cultural and delivery system problems. The preliminary measurement of the success of the solution is the acceptance of the concepts by major users in Botswana. This paper will propose the potential solution, which will be tested starting January 2011. If this solution is valid, it has a tremendous potential in underdeveloped countries.
文摘The construction of water conservancy projects should commence during optimal atmospheric conditions and non-flood period to ensure completion before the flood season begin in summer.In most areas of Northern China,the temperature during winter remain at lower level,in which environmental factors play the most important role in the construction of water conservancy projects.In particular,low temperature directly affects the strength of concrete and delays its solidification,this highly affects the quality and progress of concrete construction.In order to overcome this barrier,better planning,for reasonable and effective construction techniques and targeted control measures should be adopted to reduce the adverse effects of low temperature to assure a strong and safe architecture.
文摘This paper addresses the integrated processes of planning and scheduling of projects using technologies advanced tools as means for managing change in the era of the 4IR.The paper explores the traditional project management planning and scheduling tools in conjunction with what technology has to offer,to bridge the gap between the traditional project management planning and scheduling tools and what the modern-day business market demands.An analysis of literature covering a wide range of theoretic and empirical studies was performed.The theories underlying various planning and scheduling methods were analysed in relation to the design of projects.A descriptive quantitative secondary data was used as a tool to assess the impact of technology on project planning for scheduling.The analysis of the study’s data was conducted using the principles of cross-tabulation.Inferences were drawn on the significant impact of the use of advanced technological tools on project planning for scheduling in current business time.Organisations can make use of the findings of this study to correctly apply the available advanced technological tools for more efficient schedule management planning to enhance the successful delivery of their projects.Further,this research can be used to provide learning opportunities for new and inexperienced planners and schedulers,and as a basis for further research in this field of knowledge.
文摘At present, China's economic development is very rapid, the development of construction projects have been significantly improved. The rapid development of social economy has promoted the rapid development of the construction industry. At the same time, the construction of engineering projects has also brought new challenges, among which the most serious challenge is how to manage the whole process of cost consultation, which has a significant impact on the social economy, enterprise development and individuals. The project consulting management process in the whole project construction not only has a direct impact on the profit of the enterprise, but also has an impact on the effective management of the company's resources. In this respect, it is important and beneficial to study and analyze the consulting management and cost management in the whole construction process of engineering projects.
文摘With the continuous expansion of the production scale of water conservancy and hydropower projects, the complexity of engineering structure and construction technology is getting higher and higher, which brings great challenges to the water conservancy and hydropower construction management and the safety management of the construction site. Therefore, in the future development process of water conservancy and hydropower projects, we should pay more attention to safety management, strengthen the identification, analysis and evaluation of hazard sources on the construction site, and formulate corresponding control measures according to the specific situation of hazard sources, so as to reduce the loss of life and property, and ensure the stable development of the whole water conservancy and hydropower industry.
文摘The construction quality of the initial support of the tunnel excavation is directly related to the construction safety of the tunnel excavation. The project quality supervision agency shall check the initial support quality inspection and evaluation standards, so as to provide a basis for the quality assessment of the initial support construction.Based on the initial support of the diversion water discharge tunnel excavation, the process and unit engineering division involved in construction quality assessment, inspection items, quality requirements, inspection method, and inspection quantity, mandatory construction quality inspection, technical requirements for the reference of the participating units and quality supervisors.
文摘The main purpose of this literature review is to understand the effectiveness and impacts of Robotics Process Automation (RPA) on the practices of Project Management (PM). For attaining the purposes of the research study, an extensive literature review was conducted, which helped in gaining a theoretical understanding. These findings were then justified with the help of current and relevant secondary sources in the analysis section. The findings suggested that RPA is quite advantageous for implementing in varied aspects of a business, especially in the field of project management. However, it can pose several challenges, which need to be taken into due consideration by the organizations during execution such as the capabilities of the employees and the abilities of the existing systems to incorporate automation, among others. It was ultimately concluded that RPA is highly advantageous for project management teams but its effective implementation is the key to success.
文摘In the management of engineering projects, cost control must be effectively implemented and it should be implemented in the whole process of project management. Of course, the cost control of engineering projects presents a strong technical, professional, which requires engineering consulting units to sum up the work experience, so as to ensure that the project cost control is more effective. Therefore, the whole process cost control of the project is mainly discussed in order to realize the fairness and fairness of the cost and to ensure the benefit of the project investment.
文摘China's economic development has reached an unprecedented level, the level of urbanization is also rising rapidly, and the number of construction projects is increasing. With the continuous development and improvement of China's socialist market economic system, the construction market has been standardized to a certain extent, and the construction project bidding system is developing towards legalization, which creates development opportunities for the construction project bidding agency service industry. The bidding agency service industry can provide professional services for construction units, which can play a very important role in project construction and promote the healthy development of the construction market and bidding towards standardization. Therefore, strengthening the quality management of construction project bidding agency has become the key work of the current construction industry. Next, the article discusses the quality management strategy of construction project bidding agency.
文摘Based on a series of investigation and Research on the current situation of water conservancy project operation and management, this paper will point out some problems existing in the current management work for the relevant industry. This paper expounds the actual situation of water conservancy project operation and management in the current society, and analyzes some problems that should be paid attention to in the operation and management of water conservancy projects.
文摘Water conservancy and hydropower project and the development of our country and people's livelihood has a close connection, but through the actual investigation can be found that there are many problems in the construction management of the project, the point is extremely unfavorable to ensure the quality of the project. Therefore, in order to improve the construction quality of water conservancy and hydropower projects and fully reflect their social benefits, this paper analyzes the problems existing in the construction management of water conservancy and hydropower projects through the analysis of actual cases and investigations, and focuses on the study of countermeasures, in order to provide a reliable basis for staff to carry out their work.
文摘Traffic forecasting with high precision aids Intelligent Transport Systems(ITS)in formulating and optimizing traffic management strategies.The algorithms used for tuning the hyperparameters of the deep learning models often have accurate results at the expense of high computational complexity.To address this problem,this paper uses the Tree-structured Parzen Estimator(TPE)to tune the hyperparameters of the Long Short-term Memory(LSTM)deep learning framework.The Tree-structured Parzen Estimator(TPE)uses a probabilistic approach with an adaptive searching mechanism by classifying the objective function values into good and bad samples.This ensures fast convergence in tuning the hyperparameter values in the deep learning model for performing prediction while still maintaining a certain degree of accuracy.It also overcomes the problem of converging to local optima and avoids timeconsuming random search and,therefore,avoids high computational complexity in prediction accuracy.The proposed scheme first performs data smoothing and normalization on the input data,which is then fed to the input of the TPE for tuning the hyperparameters.The traffic data is then input to the LSTM model with tuned parameters to perform the traffic prediction.The three optimizers:Adaptive Moment Estimation(Adam),Root Mean Square Propagation(RMSProp),and Stochastic Gradient Descend with Momentum(SGDM)are also evaluated for accuracy prediction and the best optimizer is then chosen for final traffic prediction in TPE-LSTM model.Simulation results verify the effectiveness of the proposed model in terms of accuracy of prediction over the benchmark schemes.
文摘Public-and private-sector organizations have adopted artificial intelligence(AI)to meet the challenges of the Fourth Industrial Revolution.The successful implementation of AI is a challenging task,and previous research has advocated the need to explore key readiness before AI implementation.The objective of this study is to identify the AI readiness factors explored by different authors in past research.To achieve this,we conducted a rigorous literature review.The approach used in the systematic literature review is also discussed.A rigorous review of 52 studies from various journals and databases(Science Direct,Springer Link,Institute of Electrical and Electronics Engineers,Emerald,and Google Scholar)identified 23 AI readiness factors.The key factors identified were mainly related to organizational information technology infrastructure,top management support,resource availability,collaborative culture,organizational size,organizational capability,compatibility,data quality,and financial budget,whereas the other 15 were potential factors in AI readiness.All of these factors should be considered before the implementation of AI in any organization.The findings also reflect a high failure rate,including AI readiness factors,which are intended to facilitate AI adoption in organizations and reduce the frequency of failures.These factors will aid management in developing an effective strategy for AI implementation in organizations.
基金Three Gorges Follow-up Work Fund,Grant/Award Number:WE0161A042024National Key Research Program of China,Grant/Award Number:2024YFC3210900。
文摘River ethics,a significant advancement inspired by Chinese President XI Jinping's ecological civilization thought,embodies the philosophical essence of river governance and represents a legacy of innovation by generations of water resources professionals.Rooted in river ecology,it offers a framework for advancing modern water governance systems and capabilities.This paper examines eight dimensions of river ethics to provide actionable recommendations:enhancing knowledge systems on water,rivers,and lakes;addressing critical challenges in water governance to strengthen the foundational role of water authorities in ensuring water security,resource management,ecological sustainability and environmental protection;optimizing water project planning to mitigate ecological impacts;ensuring high standards in the lifecycle management of water projects;refining water diversion strategies for precise scheduling;utilizing ecosystem complexity for river and lake restoration;implementing tiered management of water-related disasters;and driving reforms to modernize water governance systems and mechanisms.
文摘Chloride ions(Cl^(-))have been shown to impact the long-lasting nature of reinforced concrete.However,Cl^(-)that are already bound inside the concrete will not lead to the deterioration of the concrete’s characteristics.The composition of the cement-based material,including the type of cement and auxiliary materials,greatly influences the ability of the material to bind Cl^(-),and varied components result in varying binding beha-vior of the Cl^(-).Simultaneously,the Cl^(-)binding process in concrete is influenced by both the internal and exterior surroundings,as well as the curing practices.These factors impact the hydration process of the cement and the internal pore structure of the concrete.Currently,mathematical theories and molecular dynamics simulations have increasingly been employed as the prevalent methods for examining the binding behaviors of Cl^(-)in concrete.These techniques are extensively utilized for predicting the lifespan and conducting microscopic studies of reinforced concrete in Cl^(-)settings.This work proposes recommendations for future research based on a summary of experimental and simulation investigations on Cl^(-)binding.Which will offer theoretical guidance for studying the binding of Cl^(-)in cement-based materials.
