Search results for " Background"

All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems

2021

Rapidly spinning neutron stars are promising sources of continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter under extreme conditions. A significant fraction of the known pulsar population belongs to binary systems. Searching for unknown neutron stars in binary systems requires specialized algorithms to address unknown orbital frequency modulations. We present a search for continuous gravitational waves emitted by neutron stars in binary systems in early data from the third observing run of the Advanced LIGO and Advanced Virgo detectors using the semicoherent, GPU-accelerated, binaryskyhough pipeline. The search analyzes the most s…

Prawo dziecka do wiadomości o swoim pochodzeniu

2017

Upper limits on the isotropic gravitational-wave background from Advanced LIGO and Advanced Virgo's third observing run

2021

We report results of a search for an isotropic gravitational-wave background (GWB) using data from Advanced LIGO's and Advanced Virgo's third observing run (O3) combined with upper limits from the earlier O1 and O2 runs. Unlike in previous observing runs in the advanced detector era, we include Virgo in the search for the GWB. The results are consistent with uncorrelated noise, and therefore we place upper limits on the strength of the GWB. We find that the dimensionless energy density $\Omega_{\rm GW}\leq 5.8\times 10^{-9}$ at the 95% credible level for a flat (frequency-independent) GWB, using a prior which is uniform in the log of the strength of the GWB, with 99% of the sensitivity comi…

Thermoelectric Radiation Detector Based on Superconductor-Ferromagnet Systems

2017

We suggest an ultrasensitive detector of electromagnetic fields exploiting the giant thermoelectric effect recently found in superconductor-ferromagnet hybrid structures. Compared with other types of superconducting detectors where the detected signal is based on variations of the detector impedance, the thermoelectric detector has the advantage of requiring no external driving fields. This is especially relevant in multipixel detectors, where the number of bias lines and the heating induced by them are an issue. We propose different material combinations to implement the detector and provide a detailed analysis of its sensitivity and speed. In particular, we perform a proper noise analysis…

Simulation Study of a Space-Based detector for UHECR observation.

2005

The next generation of experiments devoted to the study of the cosmic rays spectrum above 10(20) eV will be most likely done by means of space based detectors. In order to detect the fluorescence and Cerenkov signal generated by an EAS in atmosphere, severe requirements on the photon collection efficiency and on the triggering capability need to be met. In this paper we report about of preliminary studies of the triggering efficiency of a space based detector as a function of the main detector parameters. All results are obtained by means of a detailed simulation of the shower development, atmospheric response, detector geometry and electronics and trigger behavior in realistic conditions b…

Culture, Cultural Distance and Cultural Intelligence : A Multilevel Hierarchical Linear Model Analysis of Contextual Business Cultural Intelligence Q…

2019

Master's thesis Business Administration BE501 - University of Agder 2019 Purpose –The purpose of our master thesis is to investigate contextual antecedents to Cultural Intelligence development. Particularly, we assess the ability of cultural distance to predict Business Cultural Intelligence Quotient scores.Design / methodology / approach–Given our literature review, we hypothesize that cultural distance significantly affects BCIQ in a positive way. For this matter, we split our hypothesis into three sub-hypothesis and measured cultural distance in three ways: having at least one foreign parent, the Mahalanobis cultural distance, and the delta of each GLOBE’s practices dimensions expressed …

Kouluvalintapolitiikka perusopetuksessa: suomalaiskaupunkien koulumarkkinat kansainvälisessä valossa

2006

Tutkimuksessa tarkastellaan kouluvalintapolitiikan käyttöä lasten sijoittamisessa oppivelvollisuuskouluihin. Kyse on ylikansallisesta toimintapolitiikasta, jonka mukaan vanhemmat voivat hakea lapselle koulupaikkaa haluamaansa kouluun ja koulut voivat (osittain) valita oppilaansa. Kouluvalintapolitiikkaa on toteutettu Suomen yhtenäiskoulujärjestelmässä 1990-luvun puolivälistä alkaen. Kouluvalintapolitiikan tapahtumapaikka käsitteellistetään koulumarkkinoiksi. Käsitteen koulumarkkinat päällekkäisiä merkityksiä eritellään ideologiseksi malliksi (koulumarkkinat, hallinnolliseksi malliksi (kvasimarkkinat), alueelliseksi malliksi (paikalliset koulumarkkinat ja empiiriseksi tutkimuskohteeksi (elet…

From academic to social success? The case of teachers' children in France

2015

International audience; Our presentation takes an interest into the explanation of inequalities in education and more particularly tackles the resources provided by privileged familial backgrounds in order to facilitate educational and social achievement of their children. Our presentation will focus on teachers as parents.For the primary and secondary school level, educational success of teachers' children has been recently demonstrated for the case of France. However the conversion of this academic success into professional or social achievement has not been particularly investigated. Do teachers, as parents, provide their children with all conditions for social achievement? If they suppl…

Lifespan and skeletal muscle properties the effects of genetic background, physical activity and aging

2016

Obesity and metabolic disorders have become a notable world-wide epidemic. The pathogenesis of metabolic diseases, such as metabolic syndrome and type 2 diabetes, has begun to negatively affect life expectancy of current generations. Low aerobic capacity has shown to be a strong predictor of mortality both in rodents and humans. Exercise is known to increase an individual’s aerobic capacity; interestingly, recent studies have suggested that genetic background may play a significant role in the physical activity level of an individual. The purpose of this study was to investigate the role of genetic background and physical activity on skeletal muscle properties, metabolism and lifespan. The …

Evaluación docente vs. evaluación de la calidad

2014

Resumen basado en el de la publicación Título, resumen y palabras clave en inglés y español Artículo originalmente presentado como ponencia en el III Congreso Virtual de AIDIPE Se presenta una revisión sobre los instrumentos y dimensiones que utilizan las distintas universidades españolas para evaluar a los profesores a partir, fundamentalmente, de encuestas a los alumnos. A partir de los items que se repiten en las pruebas utilizadas en cuatro o más universidades, se ha creado un nuevo instrumento que se ha validado con 334 alumnos de la Universidad de A Coruña. A raíz de los resultados obtenidos, este instrumento podría servir tanto para la evaluación del profesorado desde la autoridad ac…