Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Eugénio M. Rocha"'
Autor:
Jianqing Chen, Eugénio M. Rocha
Publikováno v:
Opuscula Mathematica, Vol 33, Iss 2, Pp 237-354 (2013)
For a class of sub-elliptic equations on Heisenberg group \(\mathbb{H}^N\) with Hardy type singularity and critical nonlinear growth, we prove the existence of least energy solutions by developing new techniques based on the Nehari constraint. This r
Externí odkaz:
https://doaj.org/article/9d225afa36094ac0915231e9e0298e40
Publikováno v:
Procedia Computer Science. 217:1127-1136
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7de1f9c732d5c42b00fbec3fd5abf844
https://doi.org/10.1016/j.procs.2022.12.311
https://doi.org/10.1016/j.procs.2022.12.311
Publikováno v:
Procedia Computer Science. 200:1184-1193
Sheet metal forming tools, like stamping presses, play an ubiquitous role in the manufacture of several products. With increasing requirements of quality and efficiency, ensuring maximum uptime of these tools is fundamental to marketplace competitive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c613832334872194aebf2841feacce8
https://doi.org/10.1016/j.procs.2022.01.318
https://doi.org/10.1016/j.procs.2022.01.318
Publikováno v:
Set-Valued and Variational Analysis. 30:207-231
In this paper we establish a multiplicity result for a class of unilateral, nonlinear, nonlocal problems with nonsmooth potential (variational-hemivariational inequalities), using the degree map of multivalued perturbations of fractional nonlinear op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a9ef7b5030f11cc6f6b14118032338d
https://doi.org/10.1007/s11228-020-00562-0
https://doi.org/10.1007/s11228-020-00562-0
The human factor plays a relevant role in all manual or partially automatic production systems, specially, the ones showing reliable and balanced dynamics. In the literature, parametric or survey-based models are quite common for performance evaluati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a4f4cac919f1c3b758869ed751d73b3
http://hdl.handle.net/10773/35460
http://hdl.handle.net/10773/35460
Publikováno v:
Communications in Computer and Information Science ISBN: 9783031203183
Leak testing is a fundamental stage in the manufacturing process of leak-tight products providing a non-destructive quality measurement. However, leak tests are often influenced by environmental and external factors that increase the risk of test ina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c948da614e08a214f7fdf00a6e0f2e14
https://doi.org/10.1007/978-3-031-20319-0_32
https://doi.org/10.1007/978-3-031-20319-0_32
Publikováno v:
Communications in Computer and Information Science ISBN: 9783031203183
In manufacturing processes, root cause analysis of tools’ failures is crucial to determine the system reliability and to derive cost minimizing strategies. Condition-based maintenance (CBM) is one of the relevant policies to reduce costs of tools u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f00dfda4fc89e9c6d5957d34dbc86423
http://hdl.handle.net/10773/35459
http://hdl.handle.net/10773/35459
Autor:
Eugénio M. Rocha, Maria J. Lopes
Bottleneck identification is a relevant tool for continuous optimization of production lines. In this work, we implement a data-driven discrete-event simulator (DDS) based on experimental distributions, obtained from real historical data. The DDS all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6a980d59de82ac2d607fc83467271c9
http://hdl.handle.net/10773/35452
http://hdl.handle.net/10773/35452
Publikováno v:
Advances in Business Information Systems and Analytics
In this chapter, a comprehensive description of a generic framework aimed at solving various predictive data-driven related use cases, occurring in the manufacturing industry, is provided. The framework is rooted in a general mathematical model so ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aa4f75f327dab1fa10d8744e06c9967
https://doi.org/10.4018/978-1-7998-6985-6.ch012
https://doi.org/10.4018/978-1-7998-6985-6.ch012
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Purpose The purpose of this paper is to measure and compare the technical efficiency of construction companies in seven European countries: Austria, Germany, Hungary, Italy, Poland, Portugal and Spain, during the 2008–2015 period. The analysis invo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd2aa0dc305b315e0a523dfcc9ed9f32
https://doi.org/10.1108/ecam-07-2018-0287
https://doi.org/10.1108/ecam-07-2018-0287