Large-scale complex systems are integral to the functioning of various organizations within the national economy.Despite their significance,the lengthy construction cycles and the involvement of multiple entities ofte...Large-scale complex systems are integral to the functioning of various organizations within the national economy.Despite their significance,the lengthy construction cycles and the involvement of multiple entities often result in the deprioritization of standardized management practices,as they do not yield immediate benefits.The implementation of such systems typically encompasses the integrated phases of "development,construction,utiliz ation,and operation and maintenance".To enhance the overall delivery quality of these systems,it is imperative to dismantle the management barriers among these phases and adopt a holistic approach to standardized management.This paper takes a specific system project as a research object to identify common challenges,and proposes improvement strategies in the implementation of standar dized management.Empirical results indicate a substantial reduction in the system s full-lifecycle costs.展开更多
The current research on the manufacturing of large-scale and complex components focuses mainly on the casting processes.Compared with casting,plastic forming has significant advantages in terms of performance.However,...The current research on the manufacturing of large-scale and complex components focuses mainly on the casting processes.Compared with casting,plastic forming has significant advantages in terms of performance.However,effectively controlling the material flow to achieve a reduced loading force and near-uniformity in the isothermal plastic forming process of large-scale asymmetric magnesium alloy complex housings(LSMACHs)is challenging.This study proposes a material flow control method based on the diffluence upsetting-extrusion forming(DUEF)process by dividing different forging deformation regions,combining these with the principal stress method,and establishing an efficient and accurate design procedure.A rational preformed billet was designed successfully using this method.Subsequently,a finite element simulation was employed to analyze the multiphysics fields of the DUEF process.The results indicated that compared with the traditional closed-die forging(TCDF)process,the DUEF process could control the orderly flow of materials,achieve short-distance filling of materials,and reduce hydrostatic stress.Simultaneously,it improved the deformation uniformity by 20.3%and reduced the loading force by 22.6%.Finally,the rationality of the proposed method was validated through physical experiments.Compared with the TCDF process,the DUEF process exhibited a low loading force and uniform mechanical properties.The proposed material flow control method based on the DUEF process provides a new technological approach for the plastic formation of LSMACH and similar components.展开更多
With the rapid development of China's urbanization process,people put forward higher requirements for the efficient use of limited land resources.Facing the huge pressure brought by factors such as land,transporta...With the rapid development of China's urbanization process,people put forward higher requirements for the efficient use of limited land resources.Facing the huge pressure brought by factors such as land,transportation and environment,the means of transportation on the ground have long been unable to meet the needs of people in modern cities.Metro is favored by people because of its high speed,stability and large capacity,and has become the best choice to relieve congestion in the public transportation system.How to efficiently use land resources while constructing urban metro systems?This article sorts out the current status of commercial construction in Nanchang metros to study the application value of commercial complex in the metro stations of Nanchang,so as to provide some useful references for related theoretical research.展开更多
Large commercial complexes are large in scale, complex in function, and located in densely populated areas that are prone to casualties due to unfavorable evacuation. To comprehend the safety evacuation of large comme...Large commercial complexes are large in scale, complex in function, and located in densely populated areas that are prone to casualties due to unfavorable evacuation. To comprehend the safety evacuation of large commercial complex buildings in China, investigate the safety evacuation problems encountered during the evacuation process and the evacuation optimization design strategy, the paper uses Pathfinder to build a simulation model based on literature research and study to simulate the evacuation of personnel in a large commercial complex in Dalian and explore its problems during the evacuation process. The results show that the type of personnel has an effect on the large commercial complex’s evacuation simulation results;the total number of evacuees is non-linearly correlated with the time change curve;some staircases take a long time to evacuate and have a low utilization rate. To improve evacuation efficiency, optimization suggestions for safety exits, evacuation stairs, and evacuation channels are made based on the results.展开更多
The level of personnel operation ability determines the expected effectiveness of large-scale complex equipment. Firstly, this paper constructs the personnel operational ability evaluation index system and analyzes th...The level of personnel operation ability determines the expected effectiveness of large-scale complex equipment. Firstly, this paper constructs the personnel operational ability evaluation index system and analyzes the data source of index. Secondly, the weight of index is determined and the fuzzy comprehensive evaluation model is proposed. Finally, results of instance analysis show that the evaluation model is feasible and effective.展开更多
HVAC design has become an important index to measure people's living comfort and an important system in the process of urban development. Therefore, the overall planning of the system should be better completed on...HVAC design has become an important index to measure people's living comfort and an important system in the process of urban development. Therefore, the overall planning of the system should be better completed on the basis of overall construction. For the construction of relevant commercial complexes, attention should be paid to the design requirements of HVAC in the actual development process, and comprehensive arrangements should be made for the design systems of different blocks. For better development, comprehensive planning is carried out according to the actual development requirements, so as to meet the actual development requirements of HVAC design to the maximum extent and improve the related construction effect to the maximum extent.展开更多
In the process of Chinas economic development, peoples living standards are constantly improving, and peoples work and lifestyle have changed greatly. The traditional architectural design of commercial complex cant me...In the process of Chinas economic development, peoples living standards are constantly improving, and peoples work and lifestyle have changed greatly. The traditional architectural design of commercial complex cant meet peoples daily needs, and it is necessary to gradually change the architectural design, so as to better meet peoples living and entertainment needs. Through diversified construction, commercial complexes can better meet the production and living needs of urban residents. Based on this, this paper makes an in-depth analysis of the development trend of commercial complex architectural design.展开更多
Commercial complex can be simply understood as a collection of some large commercial centers or high-grade hotels, including office buildings, residences, apartments and public spaces, which contain a variety of build...Commercial complex can be simply understood as a collection of some large commercial centers or high-grade hotels, including office buildings, residences, apartments and public spaces, which contain a variety of building functions. Commercial complex is very important for our country's urbanization construction, so when carrying out such projects, the staff must attach great importance to strengthening the quality of project management, only in this way can we better ensure the overall level of commercial complex construction projects, so as to promote the development of our country and society.展开更多
With the development of urban construction in China and the improvement of living standards among urban residents,people today have higher requirements for space quality,and the development of urban commercial complex...With the development of urban construction in China and the improvement of living standards among urban residents,people today have higher requirements for space quality,and the development of urban commercial complexes has also become an important part of urban development.In this process,the functions of urban commercial complexes,in terms of culture,leisure,commerce,tourism,and office work,are gradually compounded.The integration of the commercial complex landscape with the urban environment shapes a place that provides more humanized services to the urban population.The landscape facilities in the commercial complex square are no longer just a foil,but they are constantly improved and optimized for the benefit of the crowd.Beginning from the exterior space of commercial complexes,this study investigates and analyzes the landscape design,and based on the external landscape distribution of Happy Harbor and the environment created by the landscape,this paper expounds the commercial landscape design and development of a more comprehensive and humanized commercial urban complex space landscape.展开更多
With an increasing urgent demand for fast recovery routing mechanisms in large-scale networks,minimizing network disruption caused by network failure has become critical.However,a large number of relevant studies have...With an increasing urgent demand for fast recovery routing mechanisms in large-scale networks,minimizing network disruption caused by network failure has become critical.However,a large number of relevant studies have shown that network failures occur on the Internet inevitably and frequently.The current routing protocols deployed on the Internet adopt the reconvergence mechanism to cope with network failures.During the reconvergence process,the packets may be lost because of inconsistent routing information,which reduces the network’s availability greatly and affects the Internet service provider’s(ISP’s)service quality and reputation seriously.Therefore,improving network availability has become an urgent problem.As such,the Internet Engineering Task Force suggests the use of downstream path criterion(DC)to address all single-link failure scenarios.However,existing methods for implementing DC schemes are time consuming,require a large amount of router CPU resources,and may deteriorate router capability.Thus,the computation overhead introduced by existing DC schemes is significant,especially in large-scale networks.Therefore,this study proposes an efficient intra-domain routing protection algorithm(ERPA)in large-scale networks.Theoretical analysis indicates that the time complexity of ERPA is less than that of constructing a shortest path tree.Experimental results show that ERPA can reduce the computation overhead significantly compared with the existing algorithms while offering the same network availability as DC.展开更多
This paper introduced basic situation and challenges of Block 9, Dongdajie, Chengdu City, expounded basic definition and design concept of "place making", briefed the design scheme from three aspects, namely...This paper introduced basic situation and challenges of Block 9, Dongdajie, Chengdu City, expounded basic definition and design concept of "place making", briefed the design scheme from three aspects, namely planning layout, space environment and architectural style, and concluded the application of the idea of "place making" in Block 9 design scheme in view of the multi-functional urban complex with high plot ratio.展开更多
This study examines the design of a commercial and office center near the Abali ski resort, developed by a specialized team to meet the needs of athletes at the site. Given the cold and mountainous climate, the design...This study examines the design of a commercial and office center near the Abali ski resort, developed by a specialized team to meet the needs of athletes at the site. Given the cold and mountainous climate, the design emphasizes energy efficiency by incorporating a significant amount of glass in the facade to maximize the view. To regulate light and temperature, shading devices were considered. The design was analyzed for energy efficiency using Ladybug and Honeybee software, with simulations conducted to determine the optimal orientation of the shading devices. This research introduces a novel approach to optimizing shading devices using advanced simulation tools, tailored to the specific climatic conditions of the Abali resort.展开更多
The vigorous development of urban commerce and the synergistic development of urban buildings promote the emergence and replication of urban business parks. In the long course of development, China's urban shoppin...The vigorous development of urban commerce and the synergistic development of urban buildings promote the emergence and replication of urban business parks. In the long course of development, China's urban shopping centers relied on regional centers and were dominated by a variety of industries, such as retail, catering, entertainment, entertainment, commerce, medical, visitor gathering, operating businesses through venues and facilities, and equipment leasing. Business park is a kind of urban management form which can efficiently use land resources and save space cost. The concept of green ecological design must be introduced into the teaching of architecture and environment design. In the beginning of the design of a specific architectural design and the effective design and construction process, we first learned that the building is external and internal characteristics, which are identified in the whole design process, so as to provide and optimize these structures for the subsequent subsequent architectural activities.展开更多
文摘Large-scale complex systems are integral to the functioning of various organizations within the national economy.Despite their significance,the lengthy construction cycles and the involvement of multiple entities often result in the deprioritization of standardized management practices,as they do not yield immediate benefits.The implementation of such systems typically encompasses the integrated phases of "development,construction,utiliz ation,and operation and maintenance".To enhance the overall delivery quality of these systems,it is imperative to dismantle the management barriers among these phases and adopt a holistic approach to standardized management.This paper takes a specific system project as a research object to identify common challenges,and proposes improvement strategies in the implementation of standar dized management.Empirical results indicate a substantial reduction in the system s full-lifecycle costs.
基金Supported by National Natural Science Foundation of China(Grant No.52075501).
文摘The current research on the manufacturing of large-scale and complex components focuses mainly on the casting processes.Compared with casting,plastic forming has significant advantages in terms of performance.However,effectively controlling the material flow to achieve a reduced loading force and near-uniformity in the isothermal plastic forming process of large-scale asymmetric magnesium alloy complex housings(LSMACHs)is challenging.This study proposes a material flow control method based on the diffluence upsetting-extrusion forming(DUEF)process by dividing different forging deformation regions,combining these with the principal stress method,and establishing an efficient and accurate design procedure.A rational preformed billet was designed successfully using this method.Subsequently,a finite element simulation was employed to analyze the multiphysics fields of the DUEF process.The results indicated that compared with the traditional closed-die forging(TCDF)process,the DUEF process could control the orderly flow of materials,achieve short-distance filling of materials,and reduce hydrostatic stress.Simultaneously,it improved the deformation uniformity by 20.3%and reduced the loading force by 22.6%.Finally,the rationality of the proposed method was validated through physical experiments.Compared with the TCDF process,the DUEF process exhibited a low loading force and uniform mechanical properties.The proposed material flow control method based on the DUEF process provides a new technological approach for the plastic formation of LSMACH and similar components.
基金Culture&Arts Science Planning Project of Jiangxi Province(YG2018130)Humanities and Social Science Research Project for Universities in Jiangxi Province(JC19225)Teaching Reform Research Project for Universities in Jiangxi Province(JXJG-18-2-42).
文摘With the rapid development of China's urbanization process,people put forward higher requirements for the efficient use of limited land resources.Facing the huge pressure brought by factors such as land,transportation and environment,the means of transportation on the ground have long been unable to meet the needs of people in modern cities.Metro is favored by people because of its high speed,stability and large capacity,and has become the best choice to relieve congestion in the public transportation system.How to efficiently use land resources while constructing urban metro systems?This article sorts out the current status of commercial construction in Nanchang metros to study the application value of commercial complex in the metro stations of Nanchang,so as to provide some useful references for related theoretical research.
文摘Large commercial complexes are large in scale, complex in function, and located in densely populated areas that are prone to casualties due to unfavorable evacuation. To comprehend the safety evacuation of large commercial complex buildings in China, investigate the safety evacuation problems encountered during the evacuation process and the evacuation optimization design strategy, the paper uses Pathfinder to build a simulation model based on literature research and study to simulate the evacuation of personnel in a large commercial complex in Dalian and explore its problems during the evacuation process. The results show that the type of personnel has an effect on the large commercial complex’s evacuation simulation results;the total number of evacuees is non-linearly correlated with the time change curve;some staircases take a long time to evacuate and have a low utilization rate. To improve evacuation efficiency, optimization suggestions for safety exits, evacuation stairs, and evacuation channels are made based on the results.
基金supported by the Natural Science Foundation of China(71704184)Projects of the of the National Social Science Foundation of China(15GJ003-245)Science Foundation of Equipment Research(JJ20172A05095)
文摘The level of personnel operation ability determines the expected effectiveness of large-scale complex equipment. Firstly, this paper constructs the personnel operational ability evaluation index system and analyzes the data source of index. Secondly, the weight of index is determined and the fuzzy comprehensive evaluation model is proposed. Finally, results of instance analysis show that the evaluation model is feasible and effective.
文摘HVAC design has become an important index to measure people's living comfort and an important system in the process of urban development. Therefore, the overall planning of the system should be better completed on the basis of overall construction. For the construction of relevant commercial complexes, attention should be paid to the design requirements of HVAC in the actual development process, and comprehensive arrangements should be made for the design systems of different blocks. For better development, comprehensive planning is carried out according to the actual development requirements, so as to meet the actual development requirements of HVAC design to the maximum extent and improve the related construction effect to the maximum extent.
文摘In the process of Chinas economic development, peoples living standards are constantly improving, and peoples work and lifestyle have changed greatly. The traditional architectural design of commercial complex cant meet peoples daily needs, and it is necessary to gradually change the architectural design, so as to better meet peoples living and entertainment needs. Through diversified construction, commercial complexes can better meet the production and living needs of urban residents. Based on this, this paper makes an in-depth analysis of the development trend of commercial complex architectural design.
文摘Commercial complex can be simply understood as a collection of some large commercial centers or high-grade hotels, including office buildings, residences, apartments and public spaces, which contain a variety of building functions. Commercial complex is very important for our country's urbanization construction, so when carrying out such projects, the staff must attach great importance to strengthening the quality of project management, only in this way can we better ensure the overall level of commercial complex construction projects, so as to promote the development of our country and society.
文摘With the development of urban construction in China and the improvement of living standards among urban residents,people today have higher requirements for space quality,and the development of urban commercial complexes has also become an important part of urban development.In this process,the functions of urban commercial complexes,in terms of culture,leisure,commerce,tourism,and office work,are gradually compounded.The integration of the commercial complex landscape with the urban environment shapes a place that provides more humanized services to the urban population.The landscape facilities in the commercial complex square are no longer just a foil,but they are constantly improved and optimized for the benefit of the crowd.Beginning from the exterior space of commercial complexes,this study investigates and analyzes the landscape design,and based on the external landscape distribution of Happy Harbor and the environment created by the landscape,this paper expounds the commercial landscape design and development of a more comprehensive and humanized commercial urban complex space landscape.
基金the National Natural Science Foundation of China(No.61702315)the Key R&D program(international science and technology cooperation project)of Shanxi Province China(No.201903D421003)the National Key Research and Development Program of China(No.2018YFB1800401).
文摘With an increasing urgent demand for fast recovery routing mechanisms in large-scale networks,minimizing network disruption caused by network failure has become critical.However,a large number of relevant studies have shown that network failures occur on the Internet inevitably and frequently.The current routing protocols deployed on the Internet adopt the reconvergence mechanism to cope with network failures.During the reconvergence process,the packets may be lost because of inconsistent routing information,which reduces the network’s availability greatly and affects the Internet service provider’s(ISP’s)service quality and reputation seriously.Therefore,improving network availability has become an urgent problem.As such,the Internet Engineering Task Force suggests the use of downstream path criterion(DC)to address all single-link failure scenarios.However,existing methods for implementing DC schemes are time consuming,require a large amount of router CPU resources,and may deteriorate router capability.Thus,the computation overhead introduced by existing DC schemes is significant,especially in large-scale networks.Therefore,this study proposes an efficient intra-domain routing protection algorithm(ERPA)in large-scale networks.Theoretical analysis indicates that the time complexity of ERPA is less than that of constructing a shortest path tree.Experimental results show that ERPA can reduce the computation overhead significantly compared with the existing algorithms while offering the same network availability as DC.
文摘This paper introduced basic situation and challenges of Block 9, Dongdajie, Chengdu City, expounded basic definition and design concept of "place making", briefed the design scheme from three aspects, namely planning layout, space environment and architectural style, and concluded the application of the idea of "place making" in Block 9 design scheme in view of the multi-functional urban complex with high plot ratio.
文摘This study examines the design of a commercial and office center near the Abali ski resort, developed by a specialized team to meet the needs of athletes at the site. Given the cold and mountainous climate, the design emphasizes energy efficiency by incorporating a significant amount of glass in the facade to maximize the view. To regulate light and temperature, shading devices were considered. The design was analyzed for energy efficiency using Ladybug and Honeybee software, with simulations conducted to determine the optimal orientation of the shading devices. This research introduces a novel approach to optimizing shading devices using advanced simulation tools, tailored to the specific climatic conditions of the Abali resort.
文摘The vigorous development of urban commerce and the synergistic development of urban buildings promote the emergence and replication of urban business parks. In the long course of development, China's urban shopping centers relied on regional centers and were dominated by a variety of industries, such as retail, catering, entertainment, entertainment, commerce, medical, visitor gathering, operating businesses through venues and facilities, and equipment leasing. Business park is a kind of urban management form which can efficiently use land resources and save space cost. The concept of green ecological design must be introduced into the teaching of architecture and environment design. In the beginning of the design of a specific architectural design and the effective design and construction process, we first learned that the building is external and internal characteristics, which are identified in the whole design process, so as to provide and optimize these structures for the subsequent subsequent architectural activities.
