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In order to utilize manufacturing resources reasonably, improve production efficiency, lower the production cost, reduce the waste of resources and environment in the process of production, and reduce the difference between process design phase and production scheduling stage, the multi-objective flexible process planning of multi-part in discrete manufacturing is studied in this paper. On the basis...
We study the dynamic service migration problem in mobile edge-clouds that host cloud-based services at the network edge. This offers the benefits of reduction in network overhead and latency but requires service migrations as user locations change over time. It is challenging to make these decisions in an optimal manner because of the uncertainty in node mobility as well as possible non-linearity...
Mobile micro-cloud is an emerging technology in distributed computing, which is aimed at providing seamless computing/data access to the edge of the network when a centralized service may suffer from poor connectivity and long latency. Different from the traditional cloud, a mobile micro-cloud is smaller and deployed closer to users, typically attached to a cellular base station or wireless network...
We consider the problem of opportunistically scheduling low-priority tasks onto underutilized computation resources in the cloud left by high-priority tasks. To avoid conflicts with high-priority tasks, the scheduler must suspend the low-priority tasks (causing \imp{waiting}), or move them to other underutilized servers (causing \imp{migration}), if the high-priority tasks resume. The goal of opportunistic...
We consider the problem of tracking the topology of a large-scale dynamic network with limited monitoring resources. By modeling the dynamics of links as independent ON-OFF Markov chains, we formulate the problem as that of maximizing the overall accuracy of tracking link states when only a limited number of network elements can be monitored at each time step. We consider two forms of sampling policies:...
In order to hedge the longevity risk, longevity bonds are designed, whose payoff structure depends on the changes in mortality. To forecast the mortality more precisely, we use a time-dynamic stochastic model by utilizing a panel data approach to forecast the mortality rates and get a survival index. Empirical study is conducted with the data in China. Then we apply these forecasting mortality rates...
Land degradation is a major problem world-wide. Soil degradation is the core of land degradation. Soil degradation at regional scale is related to susceptibility to erosion, soil suitability, and soil characteristics. There is a pressing need for an objective measure on land degradation at regional scale. The study area is in Hengshan county in ShanXi province, where is in the agriculture-pasture...
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