Search results for "Paz"
showing 10 items of 1302 documents
Layer-Wise Discontinuous Galerkin Methods for Piezoelectric Laminates
2020
In this work, a novel high-order formulation for multilayered piezoelectric plates based on the combination of variable-order interior penalty discontinuous Galerkin methods and general layer-wise plate theories is presented, implemented and tested. The key feature of the formulation is the possibility to tune the order of the basis functions in both the in-plane approximation and the through-the-thickness expansion of the primary variables, namely displacements and electric potential. The results obtained from the application to the considered test cases show accuracy and robustness, thus confirming the developed technique as a supplementary computational tool for the analysis and design o…
Nonlinear free vibrations of composite structures via the X-Ritz method
2020
The analysis of large amplitude vibrations of thin-walled cracked structures build as plate assembly is considered in this study. The problem is addressed via a Ritz approach, called X-Ritz, based on the first order shear deformation theory and von K´arm´an’s geometric nonlinearity assumptions. The trial functions are expressed as series of regular orthogonal polynomial products supplemented with special functions able to represent the crack behaviour; boundary functions are used to guarantee the fulfillment of the kinematic boundary conditions. Results are presented, which illustrate the influence of cracks on the stiffening effect due to large amplitude vibrations.
Nonlinear free vibrations analysis of cracked composite stiffened plates via X-Ritz approach
2019
Thin and moderately thick composite multi-layered plates are widely employed in naval and aerospace structures. They can experience the presence of cracks, generated for example by corrosion, fatigue or accidental external causes, which aect their static and dynamic behaviour. As regard the dynamic characteristics of plates, many studies have focused on the linear vibration analysis of both isotropic and composite thin and thick plates, providing for a comprehensive knowledge of the plate dynamic behaviour. However, for an accurate appraisal of the plate dynamics, in some applications it is needed to investigate the nonlinear free vibration problem; a literature survey evidences that the la…
Lietišķi ģeoloģiskie pētījumi, jaunas tehnoloģijas, materiāli un produkti
2016
Izdevums sagatavots un izdots par Valsts pētījumu programmas 2014.104/VPP6/6 “Meža un zemes dzīļu resursu izpēte, ilgtspējīga izmantošana – jauni produkti un tehnoloģijas” ResProd 4. projekta ZEME līdzekļiem.
Lo sviluppo economico è/e lo sviluppo della qualità: un parco dell'innovazione a Catania
2022
Il tema delle periferie produttive (o ex produttive) negli ultimi anni ha assunto un ruolo predominante nella pianificazione delle città al fine di rivalutare le aree industriali dismesse come serbatoi per la riqualificazione urbana ed economica delle nostre città. Sicurezza, degrado sociale e ambientale, abbandono, consumo di suolo sono le principali problematiche di queste aree e investire nella loro riqualificazione può essere un’occasione centrale per la “ripartenza” economica delle nostre città. Per tale motivo, la Regione Siciliana ha recentemente designato una vasta area della città di Catania come “Zona Economica Speciale” (ZES) per il rilancio delle filiere economiche della città. …
Somu zīmolu atpazīstamība Latvijas iedzīvotāju vidū
2021
Bakalaura darba tēma ir “Somu zīmolu atpazīstamība Latvijas iedzīvotāju vidū”. Pētījuma mērķis ir noskaidrot patērētāju viedokli par zīmoliem Fazer un Lumene un novērtēt to atpazīstamību Lavijas iedzīvotāju vidū. Bakalaura darbs sastāv no trīs daļām: teorētiskās daļas, metodoloģiskās daļas un empīriskās daļas. Teorētiskā daļa sastāv no divām galvenajām nodaļām: zīmols un tā atpazīstamība, somu zīmoli Fazer un Lumene. Kā pētniecības metode tiek izmantota aptauja interneta vidē. Apkopotie empīriskās daļas rezultāti sniedz informāciju par patērētāja attieksmi pret somu zīmoliem Fazer un Lumene un sniedz informāciju par šo zīmolu atpazīstamību Latvijas iedzīvotāju vidū. Galvenais pētījuma rezul…
Fazer maizes zīmola komunikācija: zīmola atpazīstamība maizes lietotāju auditorijā
2016
Darba tēma ir “Fazer” maizes zīmola komunikācija: zīmola atpazīstamība maizes lietotāju auditorijā. Šī darba mērķis ir noskaidrot uzņēmuma “Fazer” maizes zīmola atpazīstamību maizes lietotāju vidū un izpētīt kas to ietekmē. Bakalaura darbs sastāv no trīs daļām - teorētiskās, metodoloģiskās un empīriskās daļas, kā arī secinājumiem. Darba teorētiskais pamatojums balstīts uz literatūru par zīmolvedību, zīmola dzīves ciklu un mārketinga komunikācijām. Pētījuma metodoloģija iekļauj patērētāju aptauju un strukturētu interviju. Pētījuma rezultātā secināts, ka “Fazer” maizes zīmols ieguvis plašu atpazīstamību maizes lietotāju vidū, pateicoties augstajai kvalitātei un plašajam maizes sortimentam, ta…
Fracture of Honeycombs Produced by Additive Manufacturing
2022
Publisher Copyright: © 2021 World Scientific Publishing Europe Ltd. Lattice materials, such as honeycombs, are remarkable in their ability to combine high stiffness, strength and toughness at low density. In addition, the recent and pervasive development of additive manufacturing technologies makes it easier to produce these cellular materials and opens new possibilities to improve their properties by implementing small modifications to their microstructure. Such developments open new opportunities towards the design of new classes of architectured materials. For example, recent computational studies have shown that honeycombs with lattice density gradients have a fracture energy under tens…