Search results for "medium"

Rebuilding a Cluster while protecting knowledge within Low-medium-tech supplier SMEs: A Spanish and French comparison

2021

International audience; Most of SMEs are engaged in open innovation practices, but they do not benefit from open innovation or from patenting in the same way as larger firms do. At the same time SMEs, as territorialized suppliers, play a crucial role within evolving regional specialization. In this context the purpose of our study is to examine how low and medium technology supplier SMEs learn and organize themselves at a territorial level to address the challenge of IP protection in an open innovation paradigm. We used a qualitative method with a longitudinal multi-case study involving 27 companies with a historical lance to compare the territorial dynamics of knowledge protection within c…

Acoustical properties of air-saturated porous material with periodically distributed dead-end pores

2015

International audience; A theoretical and numerical study of the sound propagation in air-saturated porous media with straight main pores bearing lateral cavities (dead-ends) is presented. The lateral cavities are located at " nodes " periodically spaced along each main pore. The effect of periodicity in the distribution of the lateral cavities is studied, and the low frequency limit valid for the closely spaced dead-ends is considered separately. It is shown that the absorption coefficient and transmission loss are influenced by the viscous and thermal losses in the main pores as well as their perforation rate. The presence of long or short dead-ends significantly alters the acoustical pro…

Students at the core of English-medium instruction : research on the study paths of international master's degree students and the role of academic E…

2018

The present study focuses on the International Master’s Degree Programs (IMDP) of the University of Jyväskylä and issues related to English-medium instruction (EMI). At the core of the present study are the IMDP students’ conceptualizations of, and reflections on, academic English. Furthermore, the study examines the IMDP students’ reported language gains in academic English as well as the internal and external factors to which the students’ attribute these gains, or the lack of them. In order to map out these aspects, 15 IMDP students were interviewed at the end of their two-year program. These interviews were then analyzed inductively with the help of Atlas.ti software and by adhering to …

Development of Removable Visual Impact Indicator or Polymer Composite Materials

2021

The prototype of removable visual impact indicator for thermoset polymer composite materials is developed, and its characteristics are experimentally determined. The indicator is a fabric tape glued by epoxy to the surface of the polymer composite. The tape is impregnated with a composition that provides a visual response at the place of an impact on the composite surface. Ball-drop tests demonstrated the increase of the magnitude of the visual response with the impact energy at different substrate hardnesses. The shelf-life and mode of the tape storage until commissioning are determined. Peel tests showed the ability to remove a used indicator without damaging the surface of the composite.

A novel linear friction welding based approach for sheet-bulk joining

2019

In the last decades, the development of new, flexible manufacturing processes caused the increase of the demands for highly customized complex functional parts in many industrial fields. The peculiar design of these components often overcome conventional sheet metal and bulk metal forming processes capabilities. In order to face this issue, new hybrid techniques, capable of exploit key advantages of different processes, have to be developed. In this paper, a novel approach based on the Linear Friction Welding process is proposed to obtain sheet-bulk joints. The feasibility of the technique on high specific strength alloys is investigated through an experimental campaign.In the last decades,…

In vitro rescue of zygotic embryos of sour orange, Citrus aurantium L., and their detection based on RFLP analysis

1998

Embryo development in vivo has been studied in four Citrus aurantium L. polyembryonic genotypes. Seeds were collected 65, 85, 105, 125 and 220 days after pollination (DAP). None of the immature seeds harvested 65 and 85 DAP contained visible embryos. A single embryo at a more advanced developmental stage was observed in the central position at the micropylar apex of the embryo sac in about 74% of seeds harvested at 105 DAP, while at 125 and 220 DAP the majority of seeds had two or more embryos at the same developmental stage crowded together. Restriction fragment length polymorphism (RFLP) analysis of low- and high-copy-number nuclear DNA was used to distinguish zygotic from nucellar seedli…

AN EFFICIENT SOLUTION OF HETEROGENEOUS ANISOTROPIC CONVECTION/DIFFUSION TRANSPORT PROBLEMS

2012

EFFICIENT SOLUTION OF HETEROGENEOUS ANISOTROPIC DIFFUSION PROBLEMS

2012

The Gaia-ESO Survey: evidence of atomic diffusion in M67?

2018

Investigating the chemical homogeneity of stars born from the same molecular cloud at virtually the same time is very important for our understanding of the chemical enrichment of the interstellar medium and with it the chemical evolution of the Galaxy. One major cause of inhomogeneities in the abundances of open clusters is stellar evolution of the cluster members. In this work, we investigate variations in the surface chemical composition of member stars of the old open clusterM67 as a possible consequence of atomic diffusion effects taking place during the main-sequence phase. The abundances used are obtained from high-resolution UVES/FLAMES spectra within the framework of the Gaia-ESO S…

Corispermum intermedium, C. hyssopifolium un C. leptopterum augu sabiedrības, to ietekmējošie faktori un taksonu radniecība

2015

Latvijas endēmam Corispermum intermedium un svešzemju sugām C. hyssopifolium ar C. leptopterum ir ļoti līdzīga gan morfoloģija, gan ekoloģiskie apstākļi. Literatūrā trūkst datu par Corispermum augu sabiedrībām un to sastopamības noteicošajiem ekoloģiskajiem faktoriem. Maģistra darba mērķis – noteikt jūras piekrastes smiltājos sastopamo kamieļzāļu augu sabiedrību piederību un to ietekmējošos faktorus, kā arī C. intermedium, C. hyssopifolium un C. leptopterum radniecību. Corispermum augu sabiedrībām Latvijas smiltājos konstatēta līdzība ar Centrāleiropā sastopamo Bromo tectorum-Corispermetum leptopteri un Corispermum-Ammophila sabiedrību. Augu sabiedrību noteicošais faktors ir nabadzīgs subst…