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学者姓名：彭锐
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Abstract ：
The parallel structure in the reliability engineering is widely used in many industrial systems such as power generation systems, pump systems, production systems and computing systems. Designing the optimal maintenance policies for these parallel systems can minimize the operation cost while achieving a satisfying system availability. Previous studies have studied various maintenance optimization for parallel systems. However, little research has considered the multiple failure modes that widely exist in many real industrial systems. This research considers a parallel system that consists of heterogeneous components subject to two types of competing failures: a one-stage catastrophic failure and a two-stage delay-time failure. Inspections are conducted periodically to identify the state of each component. Three maintenance policies are proposed in this research. To find the optimal inspection interval, we analyze the renewal process of the system to minimize the long-term expected cost per unit time. A simulation procedure is proposed to evaluate the long-term expected cost per unit time. Numerical experiments are carried out to illustrate the applications of the proposed maintenance policies. The discussion provides useful insights on choosing the best policy under different system performance requirements.
Keyword ：
Parallel system Parallel system Delay-time concept Delay-time concept Multiple failure modes Multiple failure modes Maintenance Maintenance Inspection Inspection
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| GB/T 7714 | Peng, Rui , He, Xiaofeng , Zhong, Chao et al. Preventive maintenance for heterogeneous parallel systems with two failure modes [J]. | RELIABILITY ENGINEERING & SYSTEM SAFETY , 2022 , 220 . |
| MLA | Peng, Rui et al. "Preventive maintenance for heterogeneous parallel systems with two failure modes" . | RELIABILITY ENGINEERING & SYSTEM SAFETY 220 (2022) . |
| APA | Peng, Rui , He, Xiaofeng , Zhong, Chao , Kou, Gang , Xiao, Hui . Preventive maintenance for heterogeneous parallel systems with two failure modes . | RELIABILITY ENGINEERING & SYSTEM SAFETY , 2022 , 220 . |
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Abstract ：
With the emergence of the industrial internet of things, distributed data storage systems have become widely used to store the monitoring data of power generation systems. Malicious hackers often try to destroy or steal these confidential data by illegally invading the systems. In addition to hackers' illegal intrusions, the availability of the data stored is also affected by the internal failures of the system. In this research, two reliability models are formulated to study the reliability of a phased-mission distributed data storage system considering internal failures and illegal intrusion. The first model considers internal failures and data destruction, whereas the second model further considers data theft. Furthermore, the allocation of the data partitions is optimized so that system reliability can be maximized. Numerical experiments demonstrate the effectiveness of the proposed models and algorithms.
Keyword ：
Buffer storage Buffer storage Computer hacking Computer hacking Computer security Computer security Reliability Reliability dynamic reliability assessment dynamic reliability assessment multistate system multistate system phased-mission system (PMS) phased-mission system (PMS) external impacts external impacts Data security Data security Computational modeling Computational modeling Numerical models Numerical models Distributed databases Distributed databases
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| GB/T 7714 | Kou, Gang , Yi, Kunxiang , Xiao, Hui et al. Reliability of a Distributed Data Storage System Considering the External Impacts [J]. | IEEE TRANSACTIONS ON RELIABILITY , 2022 , 72 (1) : 3-14 . |
| MLA | Kou, Gang et al. "Reliability of a Distributed Data Storage System Considering the External Impacts" . | IEEE TRANSACTIONS ON RELIABILITY 72 . 1 (2022) : 3-14 . |
| APA | Kou, Gang , Yi, Kunxiang , Xiao, Hui , Peng, Rui . Reliability of a Distributed Data Storage System Considering the External Impacts . | IEEE TRANSACTIONS ON RELIABILITY , 2022 , 72 (1) , 3-14 . |
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Abstract ：
As the world's largest coal consumer, China's coal consumption in 2021 was 2934.4 million tons of standard coal. Thermal coal occupies an important position in the coal market and industry system, as an important raw material in the power industry, steel industry and other industries. The price of thermal coal in 2021 was at its highest level in a decade, and reached a historical level of about 2587.5 yuan per ton in October 2021. In the same month, the government intervened in the thermal coal price, which fell 51.9% by the end of the year under the influence of the policy. In previous studies, there has been little research on thermal coal and the impact of the variable "policy" on the thermal coal price. Thus, this paper analyzed the factors that affect the price fluctuation of thermal coal, and the impact of economic policy uncertainty on the thermal coal price. The cointegration test and forecast-error variance decomposition (FEVD) are adopted in this study. Our results show that the impact of policy uncertainty on the thermal coal price gradually increases over time, but the impact of policy uncertainty on price is negative and not as strong as expected. On the contrary, inventory and other energy prices have a greater positive impact on the price of thermal coal. The results of this study are of significance for the prediction of thermal coal prices in the future.
Keyword ：
variance decomposition variance decomposition cointegration test cointegration test thermal coal price thermal coal price
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| GB/T 7714 | Zhu, Shiqiu , Chi, Yuanying , Gao, Kaiye et al. Analysis of Influencing Factors of Thermal Coal Price [J]. | ENERGIES , 2022 , 15 (15) . |
| MLA | Zhu, Shiqiu et al. "Analysis of Influencing Factors of Thermal Coal Price" . | ENERGIES 15 . 15 (2022) . |
| APA | Zhu, Shiqiu , Chi, Yuanying , Gao, Kaiye , Chen, Yahui , Peng, Rui . Analysis of Influencing Factors of Thermal Coal Price . | ENERGIES , 2022 , 15 (15) . |
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Abstract ：
Inspection is usually carried out periodically to update a system state such that the optimal maintenance policy can be determined. In order to obtain the best inspection and maintenance policy, existing research is focused on improving the modeling accuracy of the system failure process. Little work has been devoted to making full use of the system idle time, which is known as the production wait in production systems. In this research, the failure process of a single-unit system is modeled in three stages with consideration of its production wait time. The objective of minimizing the long-run average maintenance cost per unit time is achieved by finding the optimal length of the periodic inspection interval and renewal age for this single-unit system. By comparing this model with two two-stage inspection models, the numerical study of a real steelmaking converter confirms both the accuracy and effectiveness of the proposed inspection and maintenance model. Furthermore, the sensitivity analysis of different parameters is conducted to explore the optimal choice of maintenance strategy for different cost parameters and degradation parameters. The analysis provides useful management insights for decision-makers.
Keyword ：
inspection inspection production wait production wait Maintenance engineering Maintenance engineering Delay-time concept Delay-time concept Degradation Degradation Inspection Inspection Sensitivity analysis Sensitivity analysis Costs Costs preventive maintenance (PM) preventive maintenance (PM) Numerical models Numerical models Production systems Production systems
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| GB/T 7714 | Kou, Gang , Liu, Yaying , Xiao, Hui et al. Optimal Inspection Policy for a Three-Stage System Considering the Production Wait Time [J]. | IEEE TRANSACTIONS ON RELIABILITY , 2022 , 72 (3) : 934-949 . |
| MLA | Kou, Gang et al. "Optimal Inspection Policy for a Three-Stage System Considering the Production Wait Time" . | IEEE TRANSACTIONS ON RELIABILITY 72 . 3 (2022) : 934-949 . |
| APA | Kou, Gang , Liu, Yaying , Xiao, Hui , Peng, Rui . Optimal Inspection Policy for a Three-Stage System Considering the Production Wait Time . | IEEE TRANSACTIONS ON RELIABILITY , 2022 , 72 (3) , 934-949 . |
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Abstract ：
具有多阶段任务需求的温备份系统可靠性分析
Keyword ：
多值决策图 多值决策图 温备份元件 温备份元件 系统可靠性 系统可靠性 多阶段任务系统(PMS) 多阶段任务系统(PMS)
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| GB/T 7714 | 邱慧 , 闫相斌 , 翟庆庆 et al. 具有多阶段任务需求的温备份系统可靠性分析 [J]. | 邱慧 , 2021 , 29 (2) : 99-107 . |
| MLA | 邱慧 et al. "具有多阶段任务需求的温备份系统可靠性分析" . | 邱慧 29 . 2 (2021) : 99-107 . |
| APA | 邱慧 , 闫相斌 , 翟庆庆 , 彭锐 , 中国管理科学 . 具有多阶段任务需求的温备份系统可靠性分析 . | 邱慧 , 2021 , 29 (2) , 99-107 . |
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Abstract ：
Existing research has been concentrated on improving the reliability of a distributed computing system through optimizing tasks allocation, providing software redundancy and providing hardware redundancy. None of these works considered the performance sharing mechanism in a distributed computing system. Different from other performance sharing systems whose reliability can be calculated directly, the reliability evaluation of a distributed computing system with performance sharing is more challenging since the reliability depends on the task execution time of each processor after performance sharing. This research considers a distributed computing system with performance sharing mechanism such that the computing power can be redistributed among different processors in the system. A reliability model is proposed to evaluate the distributed computing system with performance sharing. An optimization model is formulated to derive the optimal performance sharing policy such that the system reliability can be maximized. Both analytic examples and numerical examples are carried out to illustrate the proposed model and algorithm.
Keyword ：
Task analysis Task analysis Reliability Reliability Common bus performance sharing Common bus performance sharing optimization optimization Resource management Resource management system reliability system reliability Computers Computers distributed computing systems distributed computing systems universal generating function (UGF) universal generating function (UGF) Computational modeling Computational modeling Distributed computing Distributed computing Optimization Optimization
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| GB/T 7714 | Xiao, Hui , Yi, Kunxiang , Peng, Rui et al. Reliability of a Distributed Computing System With Performance Sharing [J]. | IEEE TRANSACTIONS ON RELIABILITY , 2021 , 71 (4) : 1555-1566 . |
| MLA | Xiao, Hui et al. "Reliability of a Distributed Computing System With Performance Sharing" . | IEEE TRANSACTIONS ON RELIABILITY 71 . 4 (2021) : 1555-1566 . |
| APA | Xiao, Hui , Yi, Kunxiang , Peng, Rui , Kou, Gang . Reliability of a Distributed Computing System With Performance Sharing . | IEEE TRANSACTIONS ON RELIABILITY , 2021 , 71 (4) , 1555-1566 . |
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| GB/T 7714 | Peng, Rui . Cutting edge researches on reliability evaluation and risk management [J]. | Recent Patents on Engineering , 2021 , 15 (1) : 2 . |
| MLA | Peng, Rui . "Cutting edge researches on reliability evaluation and risk management" . | Recent Patents on Engineering 15 . 1 (2021) : 2 . |
| APA | Peng, Rui . Cutting edge researches on reliability evaluation and risk management . | Recent Patents on Engineering , 2021 , 15 (1) , 2 . |
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Abstract ：
A cellular network is widely used for transmitting text (i.e., alphanumeric) messages between subscribers from different geographical locations. The geographic area of a cellular network is divided into a large number of cells, which are served by at least one facilities from base stations among predetermined positions. Both reliability and cost of a cellular network depend on the number, location and failure rate of facilities in the base stations. Thus, the joint optimization of facility allocation and maintenance strategy in a cellular network is relevant and significant for guiding optimal decisions on cellular network planning. This paper models a cellular network with repairable facilities characterized by a two-parameter Weibull distribution.The objective is to jointly optimize the facility allocation among predetermined positions and the facilities maintenance strategy in order to minimize the expected life cycle cost of the cellular network. An optimization algorithm for the proposed model is given based on heuristic algorithm and simulation. A case study is presented to illustrate the application of the proposed model, and sensitivity analysis shows the relationship between the optimal preventive replacement interval and the ratio of the preventive replacement cost to the minimal repair cost.
Keyword ：
Performance reliability Performance reliability Optimization algorithm Optimization algorithm Cellular network Cellular network Sensitivity analysis Sensitivity analysis Life cycle cost Life cycle cost
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| GB/T 7714 | Wu, Shengna , Yang, Jun , Peng, Rui et al. Optimal design of facility allocation and maintenance strategy for a cellular network [J]. | RELIABILITY ENGINEERING & SYSTEM SAFETY , 2021 , 205 . |
| MLA | Wu, Shengna et al. "Optimal design of facility allocation and maintenance strategy for a cellular network" . | RELIABILITY ENGINEERING & SYSTEM SAFETY 205 (2021) . |
| APA | Wu, Shengna , Yang, Jun , Peng, Rui , Zhai, Qingqing . Optimal design of facility allocation and maintenance strategy for a cellular network . | RELIABILITY ENGINEERING & SYSTEM SAFETY , 2021 , 205 . |
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Abstract ：
Background: With the rapid development of computer and Internet technologies, the measurement of software reliability has become a key point. Software reliability modeling is an important way to measure software reliability. However, there are many disadvantages in the classic model. Therefore, this paper reviews current researches in software reliability and discusses ways to improve the model from a new perspective. Objective: This paper reviews the current researches on software reliability, analyzes the existing patented technology, and points out some future directions to improve the current models to provide a more accurate and efficient way for software reliability measurement. Methods: This study introduces the general methods of software reliability evaluation, analyzes the disadvantages of these methods in practical application, draws lessons from the patent, and puts forward some new ideas to solve the problems. Results: Disadvantages of current researches are identified based on literature review. In addition, two suggestions are given to improve the current models. Conclusion: Although the software reliability has made great progress, there are still many things to be studied in the future. The problems of software reliability in real life should be gradually solved. © 2021 Bentham Science Publishers.
Keyword ：
Application programs Application programs Software reliability Software reliability Patents and inventions Patents and inventions
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| GB/T 7714 | Li, Yingchun , Gao, Kaiye , Peng, Rui . Recent researches and technologies on software reliability evaluation [J]. | Recent Patents on Engineering , 2021 , 15 (1) : 92-100 . |
| MLA | Li, Yingchun et al. "Recent researches and technologies on software reliability evaluation" . | Recent Patents on Engineering 15 . 1 (2021) : 92-100 . |
| APA | Li, Yingchun , Gao, Kaiye , Peng, Rui . Recent researches and technologies on software reliability evaluation . | Recent Patents on Engineering , 2021 , 15 (1) , 92-100 . |
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Abstract ：
Linear multistate consecutively connected systems (LMCCSs) have been widely applied in telecommunications. An LMCCS usually has several nodes arranged in sequence along a line, where connecting elements (CEs) are deployed at each node to provide connections to the following nodes. Many researchers have studied the reliability modeling and optimization of LMCCSs. However, most of the existing works on LMCCSs have focused on the uncertainty in connection ranges of CEs; none of them have considered signal loss during the transmission. In practice, a signal emitted from a node may neither completely reach nor completely not reach the destination node. In other words, only a fraction of the signal may reach the destination node whereas the rest is lost. This article makes new contributions by proposing a model that evaluates the expected signal fraction receivable by the sink node in an LMCCS subject to signal loss. Moreover, we solve the optimal design policy problem, which co-determines CEs allocation and nodes building to minimize the system cost while meeting certain constraints on system reliability and expected receivable signal fraction. Three examples are provided to illustrate the proposed model.
Keyword ：
Silicon Silicon universal generating function (UGF) universal generating function (UGF) Telecommunications Telecommunications expected receivable signal fraction expected receivable signal fraction linear multistate consecutively connected system (LMCCS) linear multistate consecutively connected system (LMCCS) signal loss signal loss Random variables Random variables reliability reliability Reliability Reliability Propagation losses Propagation losses Costs Costs Resource management Resource management Economics Economics
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| GB/T 7714 | Gao, Kaiye , Yan, Xiangbin , Peng, Rui et al. Economic Design of a Linear Consecutively Connected System Considering Cost and Signal Loss [J]. | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2021 , 51 (8) : 5116-5128 . |
| MLA | Gao, Kaiye et al. "Economic Design of a Linear Consecutively Connected System Considering Cost and Signal Loss" . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS 51 . 8 (2021) : 5116-5128 . |
| APA | Gao, Kaiye , Yan, Xiangbin , Peng, Rui , Xing, Liudong . Economic Design of a Linear Consecutively Connected System Considering Cost and Signal Loss . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2021 , 51 (8) , 5116-5128 . |
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