Over the past 25 years, the machine–part cell formation problem (CFP) has been the subject of numerous studies. The CFP consists of constructing a set of machine cells and their corresponding product families with the objective of minimising the inter-cell movement of parts while maximising the machine utilisation. This article presents a grouping genetic algorithm for the CFP that uses the grouping efficacy measure. We solve the CFP without pre-determining the number of cells. We also make some effort to improve the efficiency of our algorithm with respect to initialisation of the population, keeping a crossover operator from cloning. The computational results using the grouping efficacy measure for a set of CFPs from the literature are presented. The proposed algorithm performs well on all the test problems, exceeding or matching the solution quality of the results presented in the previous literature for most problems.
- Inderscience Publishers
- A genetic algorithm-based grouping method for a cell formation ...
Using FTIR spectroscopy to measure hydrocarbon pollution in water
According to the World Health Organization (WHO) and UNICEF’s 2015 Progress on Sanitation and Drinking Water report almost 700 million people around the world don’t have access to clean drinking water . Poor water quality is beginning to return to the developed world too. The strain of population growth, intensified agricultural practices and continued industrial expansion have are all contributing to rising contamination levels in water supplies. Chlorinated Aromatic Hydrocarbons (CHCs) Pollute...
New from Lufft: The laser-based snow depth sensor SHM31
In future, one of our new products will support weather services, road operators, operators of winter sport areas and energy producers in the field of environmental monitoring: The SHM31 is able to deliver snow depths of up to 15 meters. It represents an advancement of the SHM30, which came onto the market in mid-2009.New snow height sensor SHM31 compared to its predecessor SHM30In contrast to the SHM30, which has one interface only, the new SHM31 snow depth sensor is equipped with the three communication interface...
Why choose Sialex over traditional salt based Ion Exchanger
We are regularly asked to compare our product with that of competitors. The market place for "Scale and Corrosion" control devices is large and there ae many different offerings. Customers select products based upon many parameters. Some parameters are emotional others purely objective. Most products for sale have positives to offer. Sometimes the message presented to the potential customer can be ambiguous and in some cases simply misleading. We do not claim to have the best solution for everyone. We do,...
Comparing RGB-based vegetation indices with NDVI for agricultural drone imagery
AbstractAgribotix conducted a post hoc test of two vegetation indices, VARI and TGI, that used only the three visible-band signals from an unmodified CMOS camera. The results were compared to NDVI, which is generally considered to be a reliable measure of field health and the underlying RGB image. While the results are somewhat encouraging in limited cases, it is clear that neither VARI nor TGI are applicable as general-purposes measures of field health.1. IntroductionA vegetation index is used to combine or...
Flood modeling and mitigation measures in an Urban Environment –Victoria, Australia - Case Study
AbstractAccurate prediction of flood extents in urban catchments is extremely difficult without having a 1d/2d integrated modeling approach. The integrated flood modeling is becoming popular and a new benchmark for urban flood risk management studies.City of Glen Eira in Victoria, Australia is a developed metropolitan municipality. The council is responsible for the management of 535km of drains servicing roads, properties and parks. Most of the drains were built before 1960, at a time when there were less...