Based on the framework of method of successive averages(MSA), a modified stochastic user-equilibrium assignment algorithm was proposed, which can be used to calculate the passenger flow distribution of urban rail tran...Based on the framework of method of successive averages(MSA), a modified stochastic user-equilibrium assignment algorithm was proposed, which can be used to calculate the passenger flow distribution of urban rail transit(URT) under network operation. In order to describe the congestion's impact to passengers' route choices, a generalized cost function with in-vehicle congestion was set up. Building on the k-th shortest path algorithm, a method for generating choice set with time constraint was embedded, considering the characteristics of network operation. A simple but efficient route choice model, which was derived from travel surveys for URT passengers in China, was introduced to perform the stochastic network loading at each iteration in the algorithm. Initial tests on the URT network in Shanghai City show that the methodology, with rational calculation time, promises to compute more precisely the passenger flow distribution of URT under network operation, compared with those practical algorithms used in today's China.展开更多
For the super user privilege control problem in system services, a user permission isolation method is proposed. Based on virtualization technology, the permission limited environments are constructed for different us...For the super user privilege control problem in system services, a user permission isolation method is proposed. Based on virtualization technology, the permission limited environments are constructed for different users. According to privilege sets, the users, mapping relations are built among users, isolated domains and program modules. Besides, we give an algorithm for division of program permissions based on Concept Lattices. And the security strategies are designed for different isolated domains. Finally, we propose the implications of least privilege, and prove that the method eliminates the potential privileged users in system services.展开更多
This thesis paper is a brief summary of user centered design, (particularly in the situation of under the battlefield), which incorporates the related information after reviewing many other papers. A display screen us...This thesis paper is a brief summary of user centered design, (particularly in the situation of under the battlefield), which incorporates the related information after reviewing many other papers. A display screen user requires an ability to provide proper information while considering a variety of information in a short period. While operating the display screen, the user is heavily pressed for time as the missions are allocated through many different steps of orders. In addition, since a failure would cause fatal damage or cause further defeat, this increases the pressure of time. The right environment for operating a display screen is most useful when the user is in the most vulnerable time period or long-term continuous operation of the display screen. In that kind of sterile environment, the operating display screen is there to help the user’s decisions for the matter at hand, in this it should follow the user centered design and improve the user’s handiness and use. Furthermore, the information should be provided in accordance with the user's informational and perceptional process, and the capacity of the information process should be improved with the movement through each process and step. This thesis paper can be used as a reference material when designing the display screen in order to apply a user’s experiences.展开更多
为了解决区域综合能源系统(regional integrated energy system,RIES)中由于新能源出力不确定性和多能负荷波动所导致的灵活性不足问题,该文提出了一种考虑多能互补灵活性和用户低碳意愿的鲁棒优化方法。首先,计及新能源出力与负荷的共...为了解决区域综合能源系统(regional integrated energy system,RIES)中由于新能源出力不确定性和多能负荷波动所导致的灵活性不足问题,该文提出了一种考虑多能互补灵活性和用户低碳意愿的鲁棒优化方法。首先,计及新能源出力与负荷的共同影响,通过净负荷波动来刻画RIES电力子系统灵活性需求。为了计及用户低碳意愿对新能源消纳的影响,分别构建用户购买普通和零碳电能的效用函数。考虑多能耦合设备的灵活备用容量,建立包含多能灵活性供需平衡约束的目标为RIES总运行成本最小及用户总效用最大的三层鲁棒优化调度模型。引入设备最优运行区间对模型内时间耦合约束进行解耦,并采用KKT(Karush-Kuhn-Tucker)条件和嵌套列与约束生成(nested column and constraints generation,NC&CG)算法进行求解。算例分析表明,所提模型可提升RIES运行的灵活性,促进新能源消纳,实现了RIES的低碳经济运行。展开更多
Organizations may increase data security and operational efficiency by connecting Salesforce with Identity and Access Management (IAM) systems like Saviynt. This study delves deeply into the details of this revolution...Organizations may increase data security and operational efficiency by connecting Salesforce with Identity and Access Management (IAM) systems like Saviynt. This study delves deeply into the details of this revolution that is being encouraged to shift towards IAM software and potential drawbacks such as excessive provisioning and implementation issues. The study illuminated excellent practices and emphasized the importance of constant monitoring by using secondary theme analysis and qualitative research as proof. The findings indicate Saviynt as a viable solution and provide detailed information for firms seeking a smooth and secure integration path.展开更多
The Google Cloud Platform (GCP) is a popular choice for companies seeking a comprehensive cloud computing solution because it provides everything from essential computing resources to powerful data analytics and machi...The Google Cloud Platform (GCP) is a popular choice for companies seeking a comprehensive cloud computing solution because it provides everything from essential computing resources to powerful data analytics and machine learning capabilities. Saviynt is a cloud-based Identity and Access Management (IAM) system that integrates with Google Cloud Platform (GCP) and other services for additional functionality. However, other problems are associated with the transition, such as the requirement to correctly integrate IAM Saviynt into current IT infrastructures and provide comprehensive training to users on the new system. The paper will give a detailed review of the advantages, disadvantages, and best practices related to this transition.展开更多
基金Project(2007AA11Z236) supported by the National High Technology Research and Development Program of ChinaProject(2012M5209O1) supported by China Postdoctoral Science Foundation
文摘Based on the framework of method of successive averages(MSA), a modified stochastic user-equilibrium assignment algorithm was proposed, which can be used to calculate the passenger flow distribution of urban rail transit(URT) under network operation. In order to describe the congestion's impact to passengers' route choices, a generalized cost function with in-vehicle congestion was set up. Building on the k-th shortest path algorithm, a method for generating choice set with time constraint was embedded, considering the characteristics of network operation. A simple but efficient route choice model, which was derived from travel surveys for URT passengers in China, was introduced to perform the stochastic network loading at each iteration in the algorithm. Initial tests on the URT network in Shanghai City show that the methodology, with rational calculation time, promises to compute more precisely the passenger flow distribution of URT under network operation, compared with those practical algorithms used in today's China.
文摘For the super user privilege control problem in system services, a user permission isolation method is proposed. Based on virtualization technology, the permission limited environments are constructed for different users. According to privilege sets, the users, mapping relations are built among users, isolated domains and program modules. Besides, we give an algorithm for division of program permissions based on Concept Lattices. And the security strategies are designed for different isolated domains. Finally, we propose the implications of least privilege, and prove that the method eliminates the potential privileged users in system services.
文摘This thesis paper is a brief summary of user centered design, (particularly in the situation of under the battlefield), which incorporates the related information after reviewing many other papers. A display screen user requires an ability to provide proper information while considering a variety of information in a short period. While operating the display screen, the user is heavily pressed for time as the missions are allocated through many different steps of orders. In addition, since a failure would cause fatal damage or cause further defeat, this increases the pressure of time. The right environment for operating a display screen is most useful when the user is in the most vulnerable time period or long-term continuous operation of the display screen. In that kind of sterile environment, the operating display screen is there to help the user’s decisions for the matter at hand, in this it should follow the user centered design and improve the user’s handiness and use. Furthermore, the information should be provided in accordance with the user's informational and perceptional process, and the capacity of the information process should be improved with the movement through each process and step. This thesis paper can be used as a reference material when designing the display screen in order to apply a user’s experiences.
文摘为了解决区域综合能源系统(regional integrated energy system,RIES)中由于新能源出力不确定性和多能负荷波动所导致的灵活性不足问题,该文提出了一种考虑多能互补灵活性和用户低碳意愿的鲁棒优化方法。首先,计及新能源出力与负荷的共同影响,通过净负荷波动来刻画RIES电力子系统灵活性需求。为了计及用户低碳意愿对新能源消纳的影响,分别构建用户购买普通和零碳电能的效用函数。考虑多能耦合设备的灵活备用容量,建立包含多能灵活性供需平衡约束的目标为RIES总运行成本最小及用户总效用最大的三层鲁棒优化调度模型。引入设备最优运行区间对模型内时间耦合约束进行解耦,并采用KKT(Karush-Kuhn-Tucker)条件和嵌套列与约束生成(nested column and constraints generation,NC&CG)算法进行求解。算例分析表明,所提模型可提升RIES运行的灵活性,促进新能源消纳,实现了RIES的低碳经济运行。
文摘Organizations may increase data security and operational efficiency by connecting Salesforce with Identity and Access Management (IAM) systems like Saviynt. This study delves deeply into the details of this revolution that is being encouraged to shift towards IAM software and potential drawbacks such as excessive provisioning and implementation issues. The study illuminated excellent practices and emphasized the importance of constant monitoring by using secondary theme analysis and qualitative research as proof. The findings indicate Saviynt as a viable solution and provide detailed information for firms seeking a smooth and secure integration path.
文摘The Google Cloud Platform (GCP) is a popular choice for companies seeking a comprehensive cloud computing solution because it provides everything from essential computing resources to powerful data analytics and machine learning capabilities. Saviynt is a cloud-based Identity and Access Management (IAM) system that integrates with Google Cloud Platform (GCP) and other services for additional functionality. However, other problems are associated with the transition, such as the requirement to correctly integrate IAM Saviynt into current IT infrastructures and provide comprehensive training to users on the new system. The paper will give a detailed review of the advantages, disadvantages, and best practices related to this transition.