we report on the synthesis, morphology, chemically and structurally of la2o3-co3o4-zro2 nanostructure. the la2o3-co3o4-zro2 nanostructure was synthesized by a method based on the co-precipitation. composite powders have been characterized by xrd (x-ray diffraction), sem (scanning electron microscopy) and bet (brunauer-emmett-teller). x-ray diffraction showed the formation of nano crystalline, l...

The data envelopment analysis (DEA) methodology is a benchmarking tool where it is generally assumed that decision making units (DMUs) constitute a homogeneous set; specifically, it is assumed that all DMUs have a common (input, output) bundle. In earlier work by the authors the issue of non-homogeneity on the output side was investigated. There we examined a set of steel fabrication plants whe...

∗ Corresponding authors. E-mails: [email protected] (M. Cristobal), [email protected] (D. San-Martin), [email protected] (C. Capdevila), [email protected] (J.A. Jiménez), [email protected] (S. Milenkovic). https://doi.org/10.1016/j.jmrt.2017.12.001 2238-7854/© 2017 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda. This is an op...

This study divides a production system into three components: production design, demand support, and operations. Efficiency is then decomposed via network data envelopment analysis and integrated into the Malmquist Productivity Index framework to develop a more detailed decomposition of productivity change. The proposed model can identify the demand effect and the identity of the root cause of ...

An inertial vibration scavenging micro-generator is described which is suitable for biomedical applications. MEMS fabrication techniques have been used to construct a variable capacitor having one moving plate on which a proof mass is attached. Energy is extracted when the plates separate at constant charge. This device is non-resonant, so can operate over a wide range of excitation frequencies...

Batch-wise production is found in many industries. A good example of production systems which process products batch-wise are the ovens found in aircraft industry and in semiconductor manufacturing. These systems mostly consist of multiple machines of different types, given the range and volumes of products which have to be handled. Building on earlier research in aircraft industry, where the p...

This extended abstract defines a class of architectures for pipeline reconfigurable FPGAs by parameterizing a generic model. This class of architectures is sufficiently general to allow exploration of the most important design trade-offs. The parameters include the word size and LUT size, the number of global busses and registers associated with each logic block, and the horizontal interconnect...

A cluster tool is an integrated manufacturing system consisting of process, transport, and cassette modules, mechanically linked together, that is used in manufacturing of semiconductor chips. Because of high throughput requirements, cluster tools perform a number of activities concurrently. Petri nets are formal models developed specifically for representation of concurrent activities and for ...