39 research outputs found
Supporting Data Collection in Complex Scenarios with Dynamic Data Collection Processes
Nowadays, companies have to report a large number of data
sets (e.g., sustainability data) regarding their products to different legal authorities. However, in today's complex supply chains products are the outcome of the collaboration of many companies. To gather the needed data sets, companies have to employ cross-organizational and long-running data collection processes that imply great variability. To support such scenarios, we have designed a lightweight, automated approach for contextual process configuration. That approach can capture the contextual properties of the respective situations and, based on them,
automatically configure a process instance accordingly, even without human involvement. Finally, we implemented our approach and started an industrial evaluation
Identifying Variability in Process Performance Indicators
The performance perspective of business processes is concerned
with the definition of performance requirements usually specified
as a set of Process Performance Indicators (PPIs). Like other business
process perspectives such as control-flow or data, there are cases in which
PPIs are subject to variability. However, although the modelling of business
process variability (BPV) has evolved significantly, there are very
few contributions addressing the variability in the performance perspective
of business processes. Modelling PPI variants with tools and techniques
non-suitable for variability may generate redundant models, thus
making it difficult its maintenance and future adaptations, also increasing
possibility of errors in its managing. In this paper we present different
cases of PPI variability detected as result of the analysis of several
processes where BPV is present. Based on an existent metamodel used
for defining PPIs over BPs, we propose its formal extension that allows
the definition of PPI variability according to the cases identified.Ministerio de Economía y Competitividad TIN2015-70560-RJunta de Andalucía P12-TIC-1867Junta de Andalucía P10-TIC-590
Efficiency of five scale inhibitors on calcium carbonate precipitation from hard water: Effect of temperature and concentration
International audienc
Effect of Temperature on the Performance of CGS/CIGS Tandem Solar Cell
The CGS and CIGS being promising materials for large scale photovoltaic applications, the effect of
temperature on the electrical parameters of a CGS/CIGS tandem solar cell has been investigated in this
work. The copper gallium diselenide (CGS) and copper indium gallium diselenide (CIGS) structures as topcell and bottom-cell respectively, were numerically simulated under AM1.5G spectral illumination using
the two-dimensional device simulator Silvaco-Atlas. The temperature dependency of the solar cell’s characteristics was investigated in the temperature range from 300 to 400 K at intervals of 20 K. The simulation
results show the density current (Jsc) slightly increases whereas the open-circuit voltage (Voc) and fill factor
(FF), conversion efficiency (ƞ) decreases with the increase in temperature. The tandem cell operating temperature efficiency was found to be (– 0.34 %/K), which is slightly higher than that of CGS solar cell
(– 0.29 %/K), but markedly better than that of CIGS solar cell (– 0.41 %/K)