Search results for "SELE"
showing 10 items of 4721 documents
Microstructuration des dépôts imprimés par jet d'encre de la coalescence des nanoparticules d'argent vers la réalisation d'interconnexions de composa…
2012
Several challenges are still holding back the technological transfer of printed electronics to industry in spite of recent progresses. In this thesis work, the printing method of inks based on silver nanoparticles (=25 nm) was optimized according to its rheology and to the fluid/substrate interactions for the fabrication of electrical interconnections with a thickness of 500 nm. These lines were printed on silicon or flexible substrates and annealed either by conventional (oven or infrared) or selective methods (microwave) at temperatures comprised between 100 and 300 °C.A better understanding of the relationship between process and microstructure of these printed thin films, based on sever…
Improving IoT Communications Based on Smart Routing Algorithms
2018
International audience; Due to the recorded success by Internet of Things (IoT) technology, more and more domains use it as a communications and exchange network such as e-health, smart cities, vehicles, etc. IoT don’t stop integrating an important number of components and objects that are characterized by their complexity and heterogeneity. Such constraints make the existing routings protocols unsuitable for IoT communications. To accomplish all the expected tasks and satisfy the user services, it is important to guarantee a quality of communication that answers to the requirements of the various applications in terms of data and processing (availability, integrity, efficiency, etc.). The …
On improving the accuracy of Visible Light Positioning system using deep autoencoder
2020
International audience; DC-biased optical Orthogonal Frequency DivisionMultiplexing (DCO-OFDM)-based visible light positioning (VLP)technology along with the Received Signal Strength(RSS) po-sitioning algorithm is widely used to achieve centimeter levelpositioning accuracy for incoming 5G era, especially indoorenvironment. However, the DCO-OFDM has the peak-to-averagepower ratio (PAPR) issue which imposes the nonlinear distortionand it will directly affect the positioning accuracy in the VLPsystem. The PAPR reduction scheme is urgently needed. There-fore, in this paper, the impact of PAPR reduction scheme onpositioning accuracy is investigated. The positioning accuracywith and without the s…
The selective advantage of cystic fibrosis heterozygotes tested by aDNA analysis: A preliminary investigation
2000
Recently a heterozygote advantage was suggested to explain the high incidence (1:25 carrier individuals in Europeans) of the cystic fibrosis gene. This selective advantage was speculated to be due to a high resistance to chloride-secreting diarrhea, including cholera. Up to now the major efforts to test directly this hypothesis have been limited to animal models.
Parental and professional agency in terminations for fetal anomalies: analysis of Finnish women's accounts
2013
This study explores the construction of parental and professional agency in the written accounts by women who have undergone selective abortion (N=8). The analysis of the data was based on qualitative, linguistic discourse analysis. The accounts indicate that the mothers themselves exhibited both strong and weak agency during the process of prenatal diagnosis. The role of the professionals was usually discussed in these accounts concerning only the phases of pregnancy when something out of ordinary had been detected. After the termination, the mothers expressed that they were forced to exhibit strong agency and find ways to cope with their distress unaided due to a lack of professional supp…
Runs of homozygosity in the Italian goat breeds: impact of management practices in low-input systems
2021
Abstract Background Climate and farming systems, several of which are considered as low-input agricultural systems, vary between goat populations from Northern and Southern Italy and have led to different management practices. These processes have impacted genome shaping in terms of inbreeding and regions under selection and resulted in differences between the northern and southern populations. Both inbreeding and signatures of selection can be pinpointed by the analysis of runs of homozygosity (ROH), which provides useful information to assist the management of this species in different rural areas. Results We analyzed the ROH distribution and inbreeding (FROH) in 902 goats from the Italia…
Joint Optimization of Sensor Selection and Routing for Distributed Estimation in Wireless Sensor Networks
2014
Avances recientes en redes inalámbricos de sensores (WSNs, Wireless Sensor Networks) han posibilitado que pequeños sensores, baratos y con recursos limitados tanto en sensado, comunicación, como en computación, sean desplegados a gran escala. En consecuencia, las WSNs pueden ofrecer diversos servicios en importantes aplicaciones para la sociedad. Entre las varias restricciones que aparecen en el diseño de WSNs, tales como la limitación en energía disponible, procesamiento y memoria, la limitación en energía es muy importante ya que en muchas aplicaciones (ej., monitorización remota de diferentes entornos, edificios administrativos, monitoreo del hábitat, los incendios forestales, la atenció…
Reacciones de ciclación de compuestos quirales poliinsaturados fluorados catalizadas por metales de transición
2022
En el presente trabajo de Tesis se ha llevado a cabo la síntesis de compuestos nitrogenados quirales cíclicos de estructura compleja mediante reacciones de cicloadición catalizadas por metales de transición empleando como sustratos de partida 4-aza-1,7-eninos y 5,10-diaza-1,7,13-triinos quirales que, en la mayor parte de los casos, contienen átomos de flúor o agrupaciones fluoradas en su estructura molecular. La preparación de estos compuestos se basa en la utilización de homopropargilamidas quirales como sustrato común en la estructura de todos ellos. Los elementos de quiralidad y la presencia de átomos de nitrógeno y agrupaciones fluoradas en los sustratos de partida son importantes en cu…
Empirical analyses of European intellectual property rights institutions
2018
This dissertation consists of introduction chapter and five empirical studies on European intellectual property rights institutions. Chapters 2, 3 and 4 are micro-level studies and the perspective shifts to macro-level in Chapters 5 and 6. Chapters 2, 3, 5 and 6 analyze two-tiered patent systems and Chapter 4 focuses on design rights. Chapter 2 analyzes the choice between patent and utility model protection among German firms. The results indicate that larger firms are more likely to use both protection methods and that a short life cycle of products and services is associated with an increased likelihood to use utility models. Chapter 3 analyzes the role of utility models in patent filing …
Desarrollo de sistemas mesoporosos con puertas moleculares para el transporte y la liberación selectiva y controlada de fármacos
2019
La presente tesis doctoral titulada “Desarrollo de sistemas mesoporosos con puertas moleculares para el transporte y la liberación selectiva y controlada de fármacos” se centra en la síntesis de materiales híbridos orgánico-inorgánicos. Estos materiales están compuestos por un material mesoporoso inorgánico que actúa como reservorio (en el cual introducir un colorante o un fármaco) y por una puerta molecular, que es una estructura química de naturaleza orgánica que permite la liberación selectiva y controlada de las moléculas presentes en el interior de las partículas porosas, y que puede adoptar dos posiciones, abierta o cerrada, siendo el cambio de estado inducido por un estímulo externo.…