Search results for "K-L"

Selecting the tuning parameter in penalized Gaussian graphical models

2019

Penalized inference of Gaussian graphical models is a way to assess the conditional independence structure in multivariate problems. In this setting, the conditional independence structure, corresponding to a graph, is related to the choice of the tuning parameter, which determines the model complexity or degrees of freedom. There has been little research on the degrees of freedom for penalized Gaussian graphical models. In this paper, we propose an estimator of the degrees of freedom in $$\ell _1$$ -penalized Gaussian graphical models. Specifically, we derive an estimator inspired by the generalized information criterion and propose to use this estimator as the bias term for two informatio…

Gli Ortotteri di Sicilia: check-list commentata.

2011

Biogeographia I./qO'I.A)O'O( - 2011 (Pubblicato il 23 dicembre 2011) La Biogeografia della Sicilia Gli Ortotteri di Sicilia: check—list commentata BRUNO MASSA Dipartimerzto DEMETRA (Sezione Entomologizz, Acarologia, Zoologia) Ea’. 4, Vle della Scienze, 90128 Palermo e—maz'[: brzmo. mam: @um'pzz. it Key words: grasshoppers, annotated check-list, endemisms, species richness, Sicily SUMMARY The author analyses all the bibliographic references on Sicilian Orthoptera and many unpublished data, with which he carries out an annotated check—list of species so Far known in the island. On the whole, 127 species of Or- thoptera are currently known in Sicily (including small islands surr…

An efficient grid-based RF fingerprint positioning algorithm for user location estimation in heterogeneous small cell networks

2014

This paper proposes a novel technique to enhance the performance of grid-based Radio Frequency (RF) fingerprint position estimation framework. First enhancement is an introduction of two overlapping grids of training signatures. As the second enhancement, the location of the testing signature is estimated to be a weighted geometric center of a set of nearest grid units whereas in a traditional grid-based RF fingerprinting only the center point of the nearest grid unit is used for determining the user location. By using the weighting-based location estimation, the accuracy of the location estimation can be improved. The performance evaluation of the enhanced RF fingerprinting algorithm was c…

Tieto- ja viestintätekniikka Keski-Suomen peruskouluissa vuonna 2016

2017

Like ships passing in the night? Nonstandard work schedules and spousal satisfaction in Finland, the Netherlands and the United Kingdom

2020

This study examined the associations of work schedules and spousal satisfaction among Finnish (n = 347), Dutch (n = 304) and British (n = 337) parents. In addition to comparing parents with nonstandard schedule with parents in regular day work, the study examined separately the roles played in spousal satisfaction of morning, evening, night and weekend work and other working time-related variables (working hours, changes in and influence over one’s work schedules and spouse’s work schedule). The three-country data were analyzed using structural equation modeling with a multigroup procedure in Mplus. Little evidence for negative associations of work schedules and related factors with spousal…

Check-list of Italian Birds, updated to the end of 2014

2015

We provide a check-list of Italian birds with major emphasis on the phenological categorization of each taxon, following the approach and updating the results of an analogous list previously published (Brichetti & Massa, 1998). In this list we based on the IOC World Bird List (Gill & Donsker, 2015) for nomenclature, species sequence and higher level taxonomy (from genus to order). This compilation takes into account the decisions made by the Italian Ornithological Commission (COI) and includes 548 species, recorded in Italy until the end of 2014.

Multiskilled in many ways : Ghanaian Female Journalists Between Job and Home

2020

In Ghana, feminisation of journalism profession has become a fact: more girls are entering journalism programmes in the Universities, and the number of women employees are growing in the newsrooms. The problem of balancing worktime arrangements (e.g. irregular and unpredictable work schedules, weekend work and long working hours) with equally important domestic obligations are familiar to most female journalists around the globe. Even in countries with well-developed social support structures, and well-defined labour laws, the current nature of journalism worktime arrangements impedes many female journalists to achieve work–life balance. For most Ghanaian female journalists, the culturally …

Work-life balance during the COVID-19 outbreak: the case of Latvia

2020

This paper aims to shed light on work-life balance in Latvia during the state of emergency The COVID-19 outbreak has led many governments to introduce lockdowns While imposed restrictions may help to contain the spread of the virus, they may also result in substantial damage to population well-being The COVID-19 outbreak in Latvia demonstrates the extent and ways in which socio-demographics factors have determined different patterns of behaviour, attitudes, employment changes and harmonised work and life balance The study describes the chronological development of COVID-19 in the country It describes labour migration to and from Latvia before the COVID-19 outbreak It provides geographical f…

Redox signaling in acute pancreatitis

2015

Acute pancreatitis is an inflammatory process of the pancreatic gland that eventually may lead to a severe systemic inflammatory response. A key event in pancreatic damage is the intracellular activation of NF-κB and zymogens, involving also calcium, cathepsins, pH disorders, autophagy, and cell death, particularly necrosis. This review focuses on the new role of redox signaling in acute pancreatitis. Oxidative stress and redox status are involved in the onset of acute pancreatitis and also in the development of the systemic inflammatory response, being glutathione depletion, xanthine oxidase activation, and thiol oxidation in proteins critical features of the disease in the pancreas. On th…

Mental disorders and long-term labour market outcomes : nationwide cohort study of 2 055 720 individuals

2019

Objective: To examine the associations between an onset of serious mental disorders before the age of 25 with subsequent employment, income, and education outcomes. Methods: Nationwide cohort study including individuals (n=2 055 720) living in Finland between 1963 and 1990, who were alive at the end of the year they turned 25. Mental disorder diagnosis between ages 15 and 25 was used as the exposure. The level of education, employment status, annual wage or self‐employment earnings, and annual total income between ages 25 and 52 (measurement years 1988‐2015) were used as the outcomes. Results: All serious mental disorders were associated with increased risk of not being employed and not hav…