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Autonomic computing is the practice to reduce complexity involved in integrated systems across an enterprise. It is the term associated with a system capable of operating and managing on its own. A business establishment is composed of a variety of legacy and contemporary systems. The operation and maintenance of such systems can be eased if we integrate them and develop a temperate system. An enterprise...
The inventory management in spare part support operation receives new attentions due to the rapid growth of critical information systems and the express logistics industry. Contrary to the traditional spare part inventory management which is focused on the inventory policy of spare parts in the customer site for system maintenance, in the new context of spare part support operation, customers would...
This study investigates the replacement schedule for a production system with a non-repairable key module that deteriorates over time, and is subject to random failure. We examine the case where replacing the key module requires lead time for preparing such replacement. Our aim is to determine the cost-minimizing schedule point that signals the point in time when the preparation of key module replacement...
A Linux operating system is composed of a large number of software packages. Among packages there exist a variety of complex dependency relations, and their management is the foundation of building and maintaining Linux operating system. And the premise of the management is the dependency relations' extraction. Based on the analysis of several different formats of Linux software packages, a unified...
PKI-based CA system scalability and system maintenance is a research hotspot, the main line of business processes, combined with modern software engineering methods, the traditional architecture of the CA system are analyzed to identify the CA system in the expansion of and maintenance deficiencies, separation of the business to break the traditional way, using the idea of hierarchical tasks, By SSH...
In this paper, we study a repairable linear consecutive-2-out-of-3:F system. One repairman carries out the maintenance of the system. It is assumed that the working time and the repair time of each component in the system are both exponentially distributed and every component after repair is not as good as new. Each component is classified as either a key component or an ordinary one according to...
Legacy systems are usually made of two kind of artifacts: source code and databases. Typically, the maintenance of those systems is carried out through re-engineering processes. Although both artifacts can be independently maintained, for a more effective re-engineering of the whole system both should be analyzed and evolved jointly. This is mainly due to the fact that the knowledge expected to be...
Understanding business processes is an important step for software maintenance. The approaches for recovering business processes are mostly based on source code analysis, including static analysis and dynamic analysis. All these methods are proved to be effective in some specific situations. However, they are challenged when facing enterprise legacy systems which implement complex business processes...
This paper presents an UAV fault and state prediction approach which is based on particle filter. In the UAV system, on account of its dynamic environment, mechanical complexity and other factors, it is difficult to avoid all potential faults. So, in order to early detect the potential fault, fault forecast is necessary so as to avoid enormous losses. As the input and output response model of UAV...
RFID technology has advanced a lot in recent years. In order for enterprises to be competitive, an increasing number have integrated the technology into their operations. Most RFID middleware providers focus on how to shield the bottom device-level heterogeneity to accelerate the application and deployment of this technology. They always concentrate on collecting RFID events to generate standard application-level...
In order to find and treat fault or abnormal occurrences in numerically controlled machine tool of flexible manufacturing system in real-time, a study for computer numerically controlled (CNC) on-line fault diagnostics system has been carried out. The system can look up one or more sticking points of numerically controlled machine tool fault simply, locate CNC faults rapidly and accurately, but solve...
This paper presents an UAV engine fault prediction approach which is based on particle filtering framework. As the UAV input and output response model is nonlinear and multi-parameters, it is needed to find an appropriate method of fault prediction for system maintenance and real-time command. Particle filters are sequential Monte Carlo methods based on point mass (or `particle') representations of...
Precise identification of current system requirements is crucial for successful legacy system maintenance and re-engineering. Failure to understand the requirements of legacy system indicates that rational choices about how to adapt the software cannot be made. Therefore, a new approach to utilize business process models in evolving legacy systems is proposed in this paper. The proposed approach adopted...
Checkpoint/restart has been widely used in computing systems for fault tolerance, job scheduling and system maintenance purposes. However, the lack of transparency has hindered adoptions of many implementations of it. In this paper, we present a fully transparent parallel checkpoint/restart framework, DCR, which takes the advantages of kernel-level checkpointing method and TCP session preservation...
Live migration of virtual machines has been a powerful tool to facilitate system maintenance, load balancing, fault tolerance, and power-saving, especially in clusters or data centers. Although pre-copy is a predominantly used approach in the state of the art, it is difficult to provide quick migration with low network overhead, due to a great amount of transferred data during migration, leading to...
Today, the B2B E-business systems in most enterprises usually have multiple heterogeneous and independent systems which are based on different platforms and operate in different functional departments. To deal with the increased services in future, an enterprise needs to expand its system continuously. This, however, will cause great inconvenience to the future system maintenance. To implement E-business...
The risk management and quality control are important contents of the information system project surveillance. On the basis of analyzing the workbench of information system project surveillance, which include information, surveillance, adjusting and communicating and adjusting and communicating sub-system, this paper set up the function model of risk management system which include risk identify,...
Currently existing data access object (DAO) patterns have several limitations. First, the interface of the patterns and business objects is tightly-coupled, which affects seriously the dynamic extensibility of software systems. Second, the patterns have duplicated implementation codes, which add to difficulties of system maintenance. To solve these problems, a new DAO pattern with stronger independency...
Co-operative Air Traffic Flow Management (C-ATFM) is a research project for the air transport industry which will be deployed in the East China ATC center in 2009. The prime objectives are to contribute to improving safety, creating additional capacity, better management of uncertainty, and enhancing the efficiency of Air Traffic Flow Management processes. Flight Monitor System (FMS) is one of subsystems...
In heating measuring system, the water supply temperature of the heat source is requested invariable, it adopts the mode of changeable flow adjustment to change the capacity of heat supply, but in the actual operation it relates to the maintenance of the system and the sewage discharge, especially to the heating system of the boiler room. Furthermore, the heating measurement system unsurely employed...
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