Search results for "K-L"
showing 10 items of 76 documents
Variance estimation and asymptotic confidence bands for the mean estimator of sampled functional data with high entropy unequal probability sampling …
2013
For fixed size sampling designs with high entropy it is well known that the variance of the Horvitz-Thompson estimator can be approximated by the H\'ajek formula. The interest of this asymptotic variance approximation is that it only involves the first order inclusion probabilities of the statistical units. We extend this variance formula when the variable under study is functional and we prove, under general conditions on the regularity of the individual trajectories and the sampling design, that we can get a uniformly convergent estimator of the variance function of the Horvitz-Thompson estimator of the mean function. Rates of convergence to the true variance function are given for the re…
Radio frequency fingerprinting for outdoor user equipment localization
2017
The recent advancements in cellular mobile technology and smart phone usage have opened opportunities for researchers and commercial companies to develop ubiquitous low cost localization systems. Radio frequency (RF) fingerprinting is a popular positioning technique which uses radio signal strength (RSS) values from already existing infrastructures to provide satisfactory user positioning accuracy in indoor and densely built outdoor urban areas where Global Navigation Satellite System (GNSS) signal is poor and hard to reach. However a major requirement for the RF fingerprinting to maintain good localization accuracy is the collection and updating of large training database. The Minimization…
Interventions for improving psychological detachment from work: A meta-analysis.
2021
Psychological detachment from work during off-job time is crucial to sustaining employee health and well-being. However, this can be difficult to achieve, particularly when job stress is high and recovery is most needed. Boosting detachment from work is therefore of interest to many employees and organizations, and over the last decade numerous interventions have been developed and evaluated. The aim of this meta-analysis was to review and statistically synthesize the state of research on interventions designed to improve detachment both at work and outside of it. After a systematic search (covering the period 1998-2020) of the published and unpublished literature, 30 studies with 34 interv…
A TEST of the NATURE of the FE K LINE in the NEUTRON STAR LOW-MASS X-RAY BINARY SERPENS X-1
2015
Broad Fe K emission lines have been widely observed in the X-ray spectra of black hole systems, and in neutron star systems as well. The intrinsically narrow Fe K fluorescent line is generally believed to be part of the reflection spectrum originating in an illuminated accretion disk, and broadened by strong relativistic effects. However, the nature of the lines in neutron star LMXBs has been under debate. We therefore obtained the longest, high-resolution X-ray spectrum of a neutron star LMXB to date with a 300 ks Chandra HETGS observation of Serpens X-1. The observation was taken under the "continuous clocking" mode and thus free of photon pile-up effects. We carry out a systematic analys…
Wpływ pracy zdalnej w warunkach podwyższonego ryzyka na bezpieczeństwo i higienę pracy nauczycieli akademickich w myśl koncepcji work-life balance
2022
W ostatnim czasie praca zdalna zdominowała zadania pracownicze wielu zawodów. Dużym wyzwaniem była dla pracowników, którzy do tej pory nie mieli z nią żadnej styczności. W świetle raportów i dostępnych doniesień pracownicy w różny sposób radzili sobie z sytuacją i warunkami narzuconymi z góry, a wymuszonymi pandemią COVID-19. Również nauczyciele akademiccy byli zmuszeni do dużych zmian, zwłaszcza w aspekcie warunków pracy dydaktycznej. Niniejszy rozdział przedstawia wpływ pracy zdalnej w czasach pandemicznych na szeroko pojęte bezpieczeństwo i higienę pracy nauczycieli akademickich w myśl zasady work-life-balance. Badania wykonano przy pomocy autorskiego kwestionariusza ankietowego wśród lo…
Working-Time Regimes and Work-Life Balance in Europe
2015
The organization of times and places of work are key elements of working conditions, and define employees’ possibilities for balancing work and other life spheres. This study analyses several aspects of temporal and spatial flexibility, and their associations with employees’ work-life balance. This study separates four dimensions of temporal flexibility and one indicator of spatial flexibility. The dimensions of temporal flexibility are the number of hours worked, when the hours are worked, work-time intensity, and the degree of working-time autonomy. The workplace flexibility indicator is an index of work locations. Work-life balance is analysed with work-hour fit. The analyses were based …
Work and life balance – the new age management matter
2019
Even apart from the dramatic statistical data about sicknesses caused by imbalance and burnout, surveys make it clear that individuals are struggling to enjoy living because of the growing workload and the persistent presence of technologies around us (EQLS, 2016). Work-life imbalance causes loss for companies for several reasons - intentional or unintentional absence at work, high employee turnover, low productivity, insurance costs etc. The scientific question arises from the fact that until now there have not been clear researches which indicate the model of how the work and life balance (WLB) or imbalance is being created. Particularly, author is interested in how the interaction betwee…
Is fatherhood allowed? : Media discourses of fatherhood in organizational life
2019
It has been claimed that in the context of organizations and management, fathers are invisible. One source of tension for fathers who work and who want to participate in family life is that even though involved fatherhood is emerging in many western societies, a family-oriented male identity is likely to be problematic for men in organizations. This article aims to contribute to a better understanding of a professional and managerial men's work-family relationship using discourse analysis on data from three different media sources in Finland, published during 1990-2015. We identified two competing discourses: one of stasis, the other of change. The stasis discourse is constructed around tra…
The check-list of fungi in Sicily (southern Italy): current survey status
2011
A number of checklists are currently available in several continents, European and extra European countries (Holland, Switzerland, France, United Kingdom, North America, Argentina, Brazil, Uruguay, Venezuela, Bulgaria, Greece, Italy, Norway, Poland, Portugal, Spain, Romania, Russia, Africa, Iran, Oman, Turkey, Asia). The checklists are modern tools for evaluation of fungal biodiversity and precious documents to obtain ecological data and information for management and exploitation of protected areas, agro- and forest ecosystems. A checklist of Sicilian fungi was edited by Venturella (1991), followed, in 2009, by a new report (Gargano et al., 2009). At that time the number of macrofungi from…