An L3-type silicon photonic crystal cavity with a quality factor exceeding 20 million
ABSTRACT: We present an L3-type photonic crystal cavity in silicon with a theoretical quality factor of 20.9 million. This highly-optimized design is made by shifting the positions of the holes surrounding the cavity, and was obtained through an automated global optimization procedure.
Numerical Flow Simulation
This initial report serves as a background structure for the later final report. It does not claim to be complete, as it only demonstrate that the chosen mesh and physical models are verified, and just need to be refined before the post-processing.
Former, partager, collaborer en bibliothèques
PRÉAMBULE Cet article est destiné à ouvrir une discussion autour de nos pratiques actuelles en terme de partage et de collaboration. Les exemples donnés dans cet article sont tirés de ce que je connais. Cela fait pencher la balance du côté des bibliothèques académiques. De même, le titre laisse penser que seules les bibliothèques sont concernées. Ce n'est pas le cas. Mais là encore, il s'agit de ce que je vois de mon point de vue. Ainsi, si vous avez des exemples et des idées provenant ou destinées aux bibliothèques de lecture publique, scolaires ou d'entreprise, aux centres de documentation, archives ou autres types d'institutions que j'ai oubliées de lister ici, partagez-les ! Cet article a été rédigé sur Authorea et peut être commenté directement en ligne: cest.la/hors-texte (pour plus de précisions, rendez-vous à la fin de l'article).
GNU/Linux EFI boot for Lenovo ThinkPad x230
GET THE SYSTEM TO BOOT The EFI file should be located in /EFI/boot/bootx64.efi, so copy the EFI file installed by the GNU/Linux distribution (for exemple, /EFI/ubuntu/grubx64.efi in Ubuntu 16.04) to the proper location, and your system will boot.
Calibrate your display in GNU/Linux with Gnome 3 + Argyll and a ColorVision/DataColor Spyder2
The Spyder2 from ColorVision/DataColor is a display calibration device which aims at being used with Microsoft Windows or Apple MacOS X operation systems. I had bought it a long time ago to calibrate my display on my computer under Windows, at the time.
On the use of CO2 for the integration of Renewable energy in the energy system.
In the context of the energy transition, efficiency and renewable energy integration are identified as having the highest potential for mitigating the CO₂ emissions . From the energy system engineering point of view, this means that not only one has to convert renewable energy resources into distributed energy but also to make it available to supply the energy services when they are needed. In this paper, we demonstrate the role of process system engineering for designing the future energy systems and we explore the possible role that CO₂ could play as a material to help the energy transition. Considering CO₂ as a carbon support, we show on the one hand the possible role of CO₂ in the energy system : as an energy carrier in district energy systems or as a possible carbon source for long term renewable energy storage when considering power to gas concept. We also highlight the importance of understanding the carbon cycle, considering the CO₂ in the atmosphere and the possible ways to replace fossil fuel produced CO₂ by the one harvested in the atmosphere.
A reconstruction of the phase dynamics of interacting cell cycle and circadian clock
Going Full Circle: reconstructing the phase dynamics of interacting cell and circadian cycles.
Closing the loop: a reconstruction of the phase dynamics of interacting cell cycle and circadian clock
A cell portait: reconstructing the dynamics of two coupled oscillators
ABSTRACT “Coupled oscillators are not only of great biological importance, but also very interesting from a dynamical systems point of view. In a systems biology context, the interconnection between two periodic processes such the circadian rhythm and the cell cycle represents an ideal analyzable system at the single-cell level. The analysis of a large dataset from time-lapse imaging of single mouse fibroblast showed, in our previous study, that circadian and cell cycle are robustly synchronized. This synchronization state is observed over a wide range of conditions resulting from a predominant influence of the cell cycle on the circadian cycle. Moreover, parameters of the coupling functions has been identified with stochastic modeling of two interacting phase oscillators. Here, we reconstruct a non-parametric model of the phase dynamics, identifying new potential interactions between the two processes. This allows us to make more specific predictions on precise cell cycle events that could influence the circadian clock, such the condensation of chromosomes coinciding with transcriptional shutdown, and subsequently testing those prediction using different markers of cell cycle events. By analyzing several conditions we found that the phase relationship of the two systems presents shifts characteristic of resonating oscillators. In conclusion, we highlight how the use of a statistical model allows the understanding of the interaction between two important cellular processes by reducing the complex dynamics to a low dimensional phase model. ”