This paper covers the safely requirements and inspection methods for insulating components used in electrical accessories by an analyzing the properties of the insulating components used in electrical accessories base...This paper covers the safely requirements and inspection methods for insulating components used in electrical accessories by an analyzing the properties of the insulating components used in electrical accessories based on the standard of IEC 60884.展开更多
This paper based on Benford＇s Law （Benford Law）, the Shanghai stock exchange 15 listed bank balance sheets for the past 5 years data for the study sample, results show that the model in the inspection report can qu...This paper based on Benford＇s Law （Benford Law）, the Shanghai stock exchange 15 listed bank balance sheets for the past 5 years data for the study sample, results show that the model in the inspection report can quantify the quality in the process of accounting information quality comparison and has the outstanding advantages of simple, clear, this paper focuses on the Benford＇s law of balance sheet quality inspection method based on in our country and how to test the quality of balance sheets in the introduction and promotion.展开更多
With the continuous development of peoples life, the requirements for the quality of life are getting better and better, especially for the living environment and green development. In order to protect the environment...With the continuous development of peoples life, the requirements for the quality of life are getting better and better, especially for the living environment and green development. In order to protect the environment and take the path of green development, it is necessary to change the source of energy. Hydropower is favored by people with its advantages of environmental protection. The wide application of hydropower also promotes the increasing number of hydropower stations. The number of hydropower stations in China is large, but the service time of hydropower stations is relatively short, and there are still some problems in many aspects. Governor is an indispensable device for hydropower generation, which plays an irreplaceable role in hydropower generation. Once there is a problem with the governor of hydropower station, it will affect the whole power station. In order to reduce the impact of the governor failure of hydropower station, we must analyze the common faults of the governor of hydropower station, and prepare the corresponding maintenance plan for these common faults, which can be repaired quickly in case of failure, so as to minimize the impact on the hydropower station as far as possible. This paper briefly analyzes the common faults and maintenance methods of the governor of hydropower station.展开更多
The central environmental protection inspection (CEPI) system in China is a significant institutional innova‐tion in national environmental governance. The CEPI applies a joint supervision strategy to address salient...The central environmental protection inspection (CEPI) system in China is a significant institutional innova‐tion in national environmental governance. The CEPI applies a joint supervision strategy to address salient en‐vironmental issues and strictly enforce the environmental responsibilities of local governments. This study col‐lects and organizes CEPI inspection reports covering three stages that encompass the first round, the “look back”, and the second round, applying text analysis to obtain sample data and conduct statistical quantifica‐tion of word frequency in inspection reports and identify notable changes. The study explores the allocation of CEPI attention between policy objectives and the intensity of policy instruments. We determine that in con‐junction with public opinion feedback, the CEPI conducts targeted inspections and focuses more on pollutant governance, which has high severity and can be addressed quickly. The CEPI fills the gap of normalized gover‐nance with a campaign-style governance approach. Regarding the intensity of policy measures, the CEPI pri‐marily uses economic incentive policy instruments, supplemented by command-and-control and public guid‐ance approaches, advancing the sustainability of regulatory effectiveness through economic, social, and politi‐cal activities. This study extends knowledge in the field of CEPI policy priorities and implementation, expand‐ing the literature related to outcomes of environmental policy in developing countries.展开更多
The paper addresses the first eddy current benchmark problem proposed by the World Federation of Nondestructive Evaluation Centers (WFNDEC). The problem simulates the eddy current response to the presence of an axisym...The paper addresses the first eddy current benchmark problem proposed by the World Federation of Nondestructive Evaluation Centers (WFNDEC). The problem simulates the eddy current response to the presence of an axisymmetric circumferential defect in an Inconel-600 tube. All simulations employ the axisymmetric code of the electromagnetic field simulator Finite Element Method Magnetics. For three different frequencies of excitation, it is explained how the displacement of the detecting coil inside the tube leads to a variation in the impedance of the eddy current coil. Variations of the resistive and inductive components of the impedance with distance from the defect region are used to build the impedance trajectory for each frequency of analysis.展开更多
Pressure vessel is a kind of commonly used equipment in petrochemical industry. Its structure is relatively complex. It works in high-temperature, high-pressure, toxic and harmful environment, causing great harm. In p...Pressure vessel is a kind of commonly used equipment in petrochemical industry. Its structure is relatively complex. It works in high-temperature, high-pressure, toxic and harmful environment, causing great harm. In practical application, due to the limitation of various conditions, pressure vessels often have many problems, such as cracking and deformation after long-term use. In order to ensure the safe use of pressure vessels for a long time, scientific prediction and repair must be carried out before failure occurs. This paper studies various defects and tests their characteristics, so as to improve the detection rate and ensure the safe use of pressure vessels.展开更多
For costly and/or destructive inspections for a complex population, the sum of observations, the test statistic in common use, is shown to be inefficient in risk control. For the complex population consisting of Berno...For costly and/or destructive inspections for a complex population, the sum of observations, the test statistic in common use, is shown to be inefficient in risk control. For the complex population consisting of Bernoulli distributions, the method of combined inspection is proposed in this paper, Evaluation based on examples and simulation results is conducted according to the method of limited classification. It is concluded that the new method is efficient and applicable.展开更多
文摘This paper covers the safely requirements and inspection methods for insulating components used in electrical accessories by an analyzing the properties of the insulating components used in electrical accessories based on the standard of IEC 60884.
文摘This paper based on Benford＇s Law （Benford Law）, the Shanghai stock exchange 15 listed bank balance sheets for the past 5 years data for the study sample, results show that the model in the inspection report can quantify the quality in the process of accounting information quality comparison and has the outstanding advantages of simple, clear, this paper focuses on the Benford＇s law of balance sheet quality inspection method based on in our country and how to test the quality of balance sheets in the introduction and promotion.
文摘With the continuous development of peoples life, the requirements for the quality of life are getting better and better, especially for the living environment and green development. In order to protect the environment and take the path of green development, it is necessary to change the source of energy. Hydropower is favored by people with its advantages of environmental protection. The wide application of hydropower also promotes the increasing number of hydropower stations. The number of hydropower stations in China is large, but the service time of hydropower stations is relatively short, and there are still some problems in many aspects. Governor is an indispensable device for hydropower generation, which plays an irreplaceable role in hydropower generation. Once there is a problem with the governor of hydropower station, it will affect the whole power station. In order to reduce the impact of the governor failure of hydropower station, we must analyze the common faults of the governor of hydropower station, and prepare the corresponding maintenance plan for these common faults, which can be repaired quickly in case of failure, so as to minimize the impact on the hydropower station as far as possible. This paper briefly analyzes the common faults and maintenance methods of the governor of hydropower station.
基金supported by National Natural Science Foundation of China[Grant No.72304124]Spring Sunshine Collaborative Re‐search Project of the Ministry of Education in China[Grant No.202201660]+2 种基金Youth Project of Gansu Natural Science Foundation[Grant No.22JR5RA542]General Project of Gansu Philosophy and Social Science Foundation[Grant No.2022YB014]Fundamental Re‐search Funds for the Central Universities[Grant No.2023lzdxjb‐kyzx008].
文摘The central environmental protection inspection (CEPI) system in China is a significant institutional innova‐tion in national environmental governance. The CEPI applies a joint supervision strategy to address salient en‐vironmental issues and strictly enforce the environmental responsibilities of local governments. This study col‐lects and organizes CEPI inspection reports covering three stages that encompass the first round, the “look back”, and the second round, applying text analysis to obtain sample data and conduct statistical quantifica‐tion of word frequency in inspection reports and identify notable changes. The study explores the allocation of CEPI attention between policy objectives and the intensity of policy instruments. We determine that in con‐junction with public opinion feedback, the CEPI conducts targeted inspections and focuses more on pollutant governance, which has high severity and can be addressed quickly. The CEPI fills the gap of normalized gover‐nance with a campaign-style governance approach. Regarding the intensity of policy measures, the CEPI pri‐marily uses economic incentive policy instruments, supplemented by command-and-control and public guid‐ance approaches, advancing the sustainability of regulatory effectiveness through economic, social, and politi‐cal activities. This study extends knowledge in the field of CEPI policy priorities and implementation, expand‐ing the literature related to outcomes of environmental policy in developing countries.
文摘The paper addresses the first eddy current benchmark problem proposed by the World Federation of Nondestructive Evaluation Centers (WFNDEC). The problem simulates the eddy current response to the presence of an axisymmetric circumferential defect in an Inconel-600 tube. All simulations employ the axisymmetric code of the electromagnetic field simulator Finite Element Method Magnetics. For three different frequencies of excitation, it is explained how the displacement of the detecting coil inside the tube leads to a variation in the impedance of the eddy current coil. Variations of the resistive and inductive components of the impedance with distance from the defect region are used to build the impedance trajectory for each frequency of analysis.
文摘Pressure vessel is a kind of commonly used equipment in petrochemical industry. Its structure is relatively complex. It works in high-temperature, high-pressure, toxic and harmful environment, causing great harm. In practical application, due to the limitation of various conditions, pressure vessels often have many problems, such as cracking and deformation after long-term use. In order to ensure the safe use of pressure vessels for a long time, scientific prediction and repair must be carried out before failure occurs. This paper studies various defects and tests their characteristics, so as to improve the detection rate and ensure the safe use of pressure vessels.
文摘For costly and/or destructive inspections for a complex population, the sum of observations, the test statistic in common use, is shown to be inefficient in risk control. For the complex population consisting of Bernoulli distributions, the method of combined inspection is proposed in this paper, Evaluation based on examples and simulation results is conducted according to the method of limited classification. It is concluded that the new method is efficient and applicable.
