Search results for "Drift"

The effect of inbreeding rate on fitness, inbreeding depression and heterosis over a range of inbreeding coefficients

2014

Understanding the effects of inbreeding and genetic drift within populations and hybridization between genetically differentiated populations is important for many basic and applied questions in ecology and evolutionary biology. The magnitudes and even the directions of these effects can be influenced by various factors, especially by the current and historical population size (i.e. inbreeding rate). Using Drosophila littoralis as a model species, we studied the effect of inbreeding rate over a range of inbreeding levels on (i) mean fitness of a population (relative to that of an outbred control population), (ii) within‐population inbreeding depression (reduction in fitness of offspring fro…

Samfunnsansvar, veldedighet og omdømme : en studie av samfunnsansvar som veldedighet i Capgemini Norge

2016

Masteroppgave samfunnskommunikasjon- Universitetet i Agder, 2016 I denne studien undersøkes det hva bedriftens samfunnsansvar er, og hvorfor Capgemini Norge engasjerer seg i bedriftens samfunnsansvar. Som teoretisk rammeverk har jeg benyttet meg av sentral litteratur på fagområdene samfunnsansvar, veldedighet, strategisk samfunnsansvar og omdømme. Spesielt sentral i samfunnsansvarsdebatten står økonomen Archie B. Carroll og hans forklaring på hva bedrifters samfunnsansvar innebærer. Om samfunnsansvar i Norge baserer oppgaven seg i stor grad på perspektivene til Ditlev- Simonsen og Midttun (2010). Teoriene som presenteres er ment å brukes til å få i gang en fruktbar diskusjon av problemstill…

Fitness and viability of small populations : the effects of genetic drift, inbreeding, and interpopulation hybridization

2012

Development of 2D & 3D cadmium–zinc–telluride spectroscopic imagers for X-ray and gamma ray applications

2021

Strategisk kommunikasjon i sosiale medier : en studie av NSBs dialogiske kommunikasjon på Facebook

2016

Masteroppgave samfunnskommunikasjon- Universitetet i Agder, 2016 I denne oppgaven undersøkes det hvordan virksomheter kan bruke sosiale medier i sitt arbeid med strategisk kommunikasjon. For å finne ut av dette vil jeg se på hvordan NSB bruker dialogisk kommunikasjon på Facebook for å bygge og vedlikeholde gode relasjoner til sine kunder. Til grunn for oppgaven ligger teorier om sosiale medier, strategisk kommunikasjon og samtaleanalyse. Studien er delt inn i to analysedeler: én tekstanalyse og én kontekstanalyse. I tekstanalysen rettes fokuset mot hvordan NSB kommuniserer på Facebook. Analysen innledes med et kvantitativ kartleggende studie som skal gi en oversikt over NSBs Facebookside. D…

Past, present, and future of green product innovation

2021

Firms are under constant pressure from various governmental and nongovernmental agencies to switch from conventional environmentally polluting products to green product innovations (GPIs). However, the relevant research pertaining to GPI has been published in a diverse set of journals that vary in their scope and readership and, therefore, the scholarly contribution to the topic remains largely fragmented. This study has utilised a systematic literature review approach to examine the literary corpus on GPI to paint a holistic picture of its different aspects. The content and thematic analysis of 85 studies resulted in the extraction of seven key research themes: organisational capabilities,…

Durability is improved by both low and high intensity endurance training

2023

Introduction: This is one of the first intervention studies to examine how low- (LIT) and high-intensity endurance training (HIT) affect durability, defined as ‘time of onset and magnitude of deterioration in physiological-profiling characteristics over time during prolonged exercise’.Methods: Sedentary and recreationally active men (n = 16) and women (n = 19) completed either LIT (average weekly training time 6.8 ± 0.7 h) or HIT (1.6 ± 0.2 h) cycling for 10 weeks. Durability was analyzed before and after the training period from three factors during 3-h cycling at 48% of pretraining maximal oxygen uptake (VO2max): 1) by the magnitude and 2) onset of drifts (i.e. gradual change in energy ex…

A Network-Based Framework for Mobile Threat Detection

2018

Mobile malware attacks increased three folds in the past few years and continued to expand with the growing number of mobile users. Adversary uses a variety of evasion techniques to avoid detection by traditional systems, which increase the diversity of malicious applications. Thus, there is a need for an intelligent system that copes with this issue. This paper proposes a machine learning (ML) based framework to counter rapid evolution of mobile threats. This model is based on flow-based features, that will work on the network side. This model is designed with adversarial input in mind. The model uses 40 timebased network flow features, extracted from the real-time traffic of malicious and…

DOBRO : a prediction error correcting robot under drifts

2016

We propose DOBRO, a light online learning module, which is equipped with a smart correction policy helping making decision to correct or not the given prediction depending on how likely the correction will lead to a better prediction performance. DOBRO is a standalone module requiring nothing more than a time series of prediction errors and it is flexible to be integrated into any black-box model to improve its performance under drifts. We performed evaluation in a real-world application with bus arrival time prediction problem. The obtained results show that DOBRO improved prediction performance significantly meanwhile it did not hurt the accuracy when drift does not happen.

The OLYMPUS Experiment

2014

Nuclear instruments & methods in physics research / A 741, 1 - 17 (2014). doi:10.1016/j.nima.2013.12.035