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In view of the fact that there is no comprehensive evaluation parameter of support equipment allocation efficiency, in this paper, we had a comprehensive consideration of the mean logistic delay time and the annual consumption cost of support equipment, and analyzed and constructed the optimization model of allocation efficiency from the perspective of cost-effectiveness with the constraint of satisfaction...
Aiming at the inventory management problem of metro vehicle repairable spare parts, a two-echelon inventory model based on METRIC (Multi-Echelon Technique for Recoverable Item Control) theory is proposed. Firstly, analyze the state transition process of metro vehicle repairable spare parts. Secondly, establish the two-echelon inventory management model according to the inventory characteristics of...
Aiming at the problems of redundant construction, decentralized investment and extravagance in the current military resource allocation, this paper proposes a new combination evaluation model based on Analytic Hierarchy Process (AHP) and matter-element analysis. The model integrates the merits of AHP and matter-element analysis, and solves the common incompatibility problem of multi-index evaluation...
The paper demonstrates the use of a Discrete Event Simulation tool to reduce the negative impact of machine failures on the performance of a filling line. The buffer allocation problem has received a lot of attention, but still there are examples of unreliable production systems for which a buffer can be allocated in order to increase their productivity. The subject of the study is a filling and packaging...
In equipment joint support, support tasks generated by different equipment share the resource of the support sites. Compared to conventional support system, more categories of support objects leads to a sharp increase in the number and randomness of support tasks. This makes the progress of some support activities affected by the resource occupation of other activities. In other words, the availability...
Multi-level analytic-imitational method is proposed to find the optimal allocation of the financial resource dedicated to road surface quality improvement for traffic network sectors (roads). Using the proposed method aims to reduce the average time of travel through the network. The test results of the method of optimization allow us to conclude the feasibility of further development.
Testability allocation is an important process in design for testability, which allocates system-hierarchy testability index hierarchy by hierarchy down to every part of the system. Aiming at the shortage of the existing testability allocation methods, an unconventional allocation method based on Analytic Hierarchy Process (AHP) and comprehensive weighted method is proposed in this paper. On the basis...
In view of the problem of two-Echelon stock between Depot and bases by the system methods, put forward to use the least shortage as the objective function, the total prices not greater than the total support cost as the constraint condition, established the two-Echelon stock optimization model of the lifeless Recoverable parts. Solved it with the marginal analysis method, analyzed the application...
This paper develops a METRIC-like model to optimize inventory allocation of repairable spares in a three-echelon supply system. Supply availability is selected as the optimizing object of the model, and the total ordering cost of repairable spares is taken as the constraint condition. The optimal allocation of repairable spares is reached by the marginal analysis algorithm. Then the established model...
This paper aims to analyze the factors that influence customer profit contribution for a food ingredient supplier by using a case study. A total of 644 corporate clients of this supplier are sampled from January 2007 to December 2009. By running a multiple regression model, this paper conducts an empirical analysis in order to understand the factors that influence the customer profit contribution...
In recently years, the number of sewage treatment plants and the ability of sewage treatment in China have increased, but the problem of low operating efficiency still exists. This paper, by using New-Cost-DEA model to construct the operating cost efficiency model of sewage treatment plants, calculated the operating cost efficiency of 13 sewage treatment plants in Henan Province of China, trying to...
The additional task allocation model of equipment maintenance can not realize the dynamic comprehensive balance of maintenance task and maintenance personnel. So on the basis of determining the influencing factors of maintenance task allocation, a dynamic allocation model was proposed to solve this problem in this paper. To realize the numerical operation and analysis of this allocation model, the...
Sortie generation rate (SGR) is a key factor of military aircraft's combat effectiveness. An approximate analytical method is presented to analyzing aircraft sortie generation process by modeling the process as a closed queuing network (CQN). Each station in the CQN provides a kind of service to aircraft. The service time of servers in a same station can be unequal. A modified mean value analysis...
In this paper a BISR architecture for embedded memories is presented. The proposed scheme utilises a multiple bank cache-like memory for repairs. Statistical analysis is used for minimisation of the total resources required to achieve a very high fault coverage. Simulation results show that the proposed BISR scheme is characterised by high efficiency and low area overhead, even for high defect densities...
Wireless network coding has the potential to enhance the capacity of wireless mesh networks (WMNs). However, most of the work considering the practical deployment of network coding in WMNs considers only IEEE 802.11 based medium access control (MAC) layers. The recent emergence of sophisticated MAC standards supporting WMNs (e.g. IEEE 802.16) make it necessary to view the deployment issues for network...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
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