⎯This paper investigates the case where a failed product can be detected only through inspections. During the lifetime of the product, it is inspected once and then must be replaced by either corrective or preventive replacement depending on the result of the inspection. By incorporating a discount factor, a mathematical model is established to take the time value of costs into account. Based o...

Abstract. Aeolus carries the Atmospheric LAser Doppler INstrument (ALADIN), first high-spectral-resolution lidar (HSRL) in space. Although ALADIN is optimized to measure winds, its two measurement channels can also be used derive optical properties of atmospheric particles, including a direct retrieval ratio. This paper presents standard correct algorithm and Mie algorithm, main algorithms prod...

As streaming media over the Internet becomes popular, caching proxy has become increasingly important. Nowadays, caching proxy has turned into a standard technique, which is widely deployed on the Internet to reduce client-perceived delay and network traffic. In this paper, we propose a cluster-based streaming caching proxy architecture in which the local network has a number of independent cac...

with the rapid expansion of the information on the internet, recommender systems play an important role in terms of trade and research. recommender systems try to guess the user's way of thinking, using the in-formation of user's behavior or similar users and their views, to discover and then propose a product which is the most appropriate and closest product of user's interest. ...

Due to high latency of the Internet, it becomes a challenge to access large and widely distributed data quickly and efficiently on data grids. Replication is a process to address this issue, by storing data in different locations to reduce access latency and improve data locality. However, because of the limited storage capacity, a good replica replacement algorithm is needed to improve the eff...

A considerable problem in competitive trade world is choosing the best supply chain. As a result in much more serious circumstances of competitions looking for the best supplier for manufacturing, for preparing raw material, is very significant. Meantime suppliers have different scenarios to be fulfilled, such as changing selection variables like lead-time, transportation cost and transportatio...