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Does the applied gauge-wheel loads have influence on seeding depth and soil structure?
(2021-01-01)
The inadequate use of farming machinery could have negative impacts on soil structure and crop growth. During planting, a row-unit downforce system is used to reach and maintain a target seeding depth by applying downward ...
Application of Taguchi arrays using DOE for optimizing processing and understanding sputtered coated ZnO TFTs
(2021-01-01)
This study applies the Taguchi orthogonal array (OA) to improve and optimize the performance of ZnO thin-film transistors (TFT). Radiofrequency (RF) sputtering method was used to deposit the active layer of TFTs. The ...
When External Knowledge Does Not Aggregate in Named Entity Recognition
(2021-01-01)
In the different areas of knowledge, textual data are important sources of information. This way, Information Extraction methods have been developed to identify and structure information present in textual documents. In ...
Does the spatiotemporal distribution of tweets match the spatiotemporal distribution of flood phenomena? A study about the River Elbe Flood in June 2013
(The Pennsylvania State UniversityUniversity ParkPennsylvania, 2014-05-18)
In this paper we present a new approach to enhance information extraction from social media that relies upon
the geographical relations between twitter data and flood phenomena. We use specific geographical features like ...
A statistical approach for the fine-tuning of metaheuristics: A case study combining design of experiments and racing algorithms
(2015-01-01)
The fine-tuning of heuristics and metaheuristics exercises a great influence in both the solution process, as well as in the quality of results of optimization problems. The search for the best fit of these algorithms is ...
Process and parameter optimisation for micro structuring of 3D freeform metallic surfaces: A comparative study of short-pulse (nanosecond) and ultrafast (picosecond, femtosecond) laser ablation
(2017-01-01)
Layer-based laser ablation of three dimensional micro structured freeform surfaces has become of significant importance for technical applications such as biomimetic surfaces in recent years. In order to identify the optimum ...
Exploring Russian tap-code text entry adaptions for users with reduced target hitting accuracy
(2016-12-01)
Text is still the dominant form of human-computer-human communication. Users with certain motor or visual impairments may be unable to use certain text entry interfaces such as the small virtual keyboards on mobile phones ...
Non linear sigma point kalman filter applied to orbit determination using GPS measurements
(2009-01-01)
The purpose of this paper is to present a development of a non linear Kalman filter, based on the sigma point unscented transformation, aiming at real time satellite orbit determination using actual GPS measurements. If ...