Search results for "illumina"

Fast and robust phase-shift estimation in two-dimensional structured illumination microscopy.

2019

A method of determining unknown phase-shifts between elementary images in two-dimensional Structured Illumination Microscopy (2D-SIM) is presented. The proposed method is based on the comparison of the peak intensity of spectral components. These components correspond to the inherent structured illumination spectral content and the residual compo- nent that appears from wrongly estimated phase-shifts. The estimation of the phase-shifts is carried out by finding the absolute maximum of a function defined as the normalized peak intensity difference in the Fourier domain. This task is performed by an optimization method providing a fast estimation of the phase-shift. The algorithm stability an…

Melanomas eksomu sekvenēšana ģenētisko marķieru identificēšanai

2017

Melanoma ir ļaundabīgs audzējs, kas attīstās melanocītu nekontrolētas dalīšanās rezultātā. Melanomas attīstībā liela loma ir gan indivīda ģenētiskajiem un fenotipiskajiem, gan apkārtējās vides faktoriem. Tieši pēdējos gados, pateicoties jaunākas paaudzes sekvenēšanas attīstībai, atklāti daudzi jauni melanomas attīstībā iesaistīti gēni, kas nodrošinājis ievērojami detalizētāku ieskatu melanomas ģenētikā un tās veidošanās procesos. Bakalaura darba mērķis bija identificēt jaunus ar melanomas attīstību saistītus ģenētiskos marķierus. Mērķa realizēšanai 11 melanomas pacientu asiņu un audzēju audu DNS paraugiem tika veikta eksomu sekvenēšana, izmantojot Illumina sekvenēšanas metodi. Tika veikta n…

Sizing analysis of interior lighting using tubular daylighting devices

2017

Abstract Daylight access and indoor thermal comfort are key issues for high design level of sustainable buildings. In fact, daylight provides energy savings and visual comfort condition that can foster higher productivity and performance. This paper proposes a case study of sizing of daylight devices for zenith light. It enables the decision-making process of the designer to reach high levels of daylight factor. The proposed method is shown with an example of application. For the case study, a room in south of Italy, 24 different solar tunnels configurations and 12 cases with different number of skylights have been evaluated.

Le paon et la rhétorique des couleurs au sein du manuscrit : Rythme, unité et équilibre dans les Évangiles de Gundohinus

2013

Questionnaires and simulations to assess daylighting in Italian university classrooms for IEQ and energy issues

2021

Abstract Results from the DAYKE-Italy project are presented. An investigation on daylighting in eight classrooms in five Italian universities was carried out through a combined approach: an ad-hoc survey administered to students to investigate how they perceive daylight in classroom, and numerical simulations (DIVA + ALFA) to calculate a set of objective metrics (daylight, circadian, and energy-related). A sample of 542 questionnaires was collected through two sessions and the subjective judgments were correlated to objective metrics. Results from descriptive and statistical analyses showed: (i) the correlation was significant for all daylight metrics: among them, average daylight factor an…

Nonlinearities and Adaptation of Color Vision from Sequential Principal Curves Analysis

2016

Mechanisms of human color vision are characterized by two phenomenological aspects: the system is nonlinear and adaptive to changing environments. Conventional attempts to derive these features from statistics use separate arguments for each aspect. The few statistical explanations that do consider both phenomena simultaneously follow parametric formulations based on empirical models. Therefore, it may be argued that the behavior does not come directly from the color statistics but from the convenient functional form adopted. In addition, many times the whole statistical analysis is based on simplified databases that disregard relevant physical effects in the input signal, as, for instance…

Multispectral image denoising with optimized vector non-local mean filter

2016

Nowadays, many applications rely on images of high quality to ensure good performance in conducting their tasks. However, noise goes against this objective as it is an unavoidable issue in most applications. Therefore, it is essential to develop techniques to attenuate the impact of noise, while maintaining the integrity of relevant information in images. We propose in this work to extend the application of the Non-Local Means filter (NLM) to the vector case and apply it for denoising multispectral images. The objective is to benefit from the additional information brought by multispectral imaging systems. The NLM filter exploits the redundancy of information in an image to remove noise. A …

Deux plaidoyers mystiques en faveur du « no pensar nada » : le Troisième Abécédaire spirituel (1527) et la Loi d'amour (1530) de Francisco de Osuna

2017

Two mystical pleas for the «no pensar nada»: the Third Spiritual alphabet (1527) and the Law of love (1530) by Francisco de Osuna A mystic principle rooted in negative theology (from Pseudo-Dionysius the Areopagite to Saint John of the Cross), the « no pensar nada » ("thinking-nothing") was strongly defended by Franciscan preacher and spiritual guide of the « Recollection », Francisco de Osuna, in a context of spiritual polemics marked by the condemnation of Toledo's « Alumbrados » ("the Illuminated") in 1525. Despite the Holy Office's strong pressure, and the threat of censorship, Osuna openly advocated the « thinking-nothing » principle in a chapter of the Third Spiritual Alphabet (1527),…

Determining the efficiency of optical sources using a smartphone's ambient light sensor

2017

This work reports the use of a smartphone’s ambient light sensor as a valuable tool to study and characterize the efficiency of an optical source. Here, we have measured both luminous efficacy and efficiency of several optical sources (incandescent bulb and halogen lamp) as a function of the electric power consumed and the distance to the optical detector. The illuminance of LEDs as a function of the distance to the optical detector is characterized for different wavelength emissions. Analysis of the results confirms an inverse-square law of the illuminance with the detector–source distance and shows good agreement with values obtained by classical experiments. This experience will trigger …

Microbiological analysis and metagenomic profiling of the bacterial community of an anthropogenic soil modified from typic haploxererts

2022

This work aimed to characterize the microbial communities of an anthropogenic soil originating from application of pedotechniques to Vertisols in a Mediterranean environment. Bare soil profiles were sampled at three depths (0–10 cm, 10–30 cm, and 30–50 cm) and compared with the original soil not transformed at the same depths. The anthropogenic soils were characterized by a higher CaCO3 concentration (360–640 g/kg) than control soil (190–200 g/kg), while an opposite trend was registered for clay, where control soil showed a higher concentration (465 g/kg on average) than anthropogenic soil (355 g/kg on average). Organic carbon content was much higher in the unt…