Coevolution of Information Processing and Topology in Hierarchical Adaptive Random Boolean Networks

Random Boolean networks (RBNs) are frequently employed for modelling complex systems driven by information processing, e.g. for gene regulatory networks (GRNs). Here we propose a hierarchical adaptive RBN (HARBN) as a system consisting of distinct adaptive RBNs - subnetworks - connected by a set of permanent interlinks. Information measures and internal subnetworks topology of HARBN coevolve and reach steady-states that are specific for a given network structure. We investigate mean node information, mean edge information as well as a mean node degree as functions of model parameters and demonstrate HARBN's ability to describe complex hierarchical systems.Comment: 9 pages, 6 figure

Construction Management of Randselva bridge - Assessment between two construction methods: cantilever concrete and steel-box method.

Purpose of the master thesis is to perform a construction and cost analysis of two proposed solutions for the Randselva bridge on E16 roadway. Project data is based on information data given from Statens Vegvesen , Trondheim along with MultiConsult construction company. Information data consist of all aspects of construction: from geotechnical surveys and geological inspections to final construction solutions with drawings, stated in further tables of contents. Construction analysis will be performed as static system analysis with given cross-sections and materials, without designing the sections. Optimization process will be performed in order to update the further cost estimates. All calculation data will be processed and analyzed in software SoFiSTiK AG . Profitability and cost analysis will consist of uncertainty analysis in the Projection method along with the Successive calculation method . Both methods are popular in project management and financial analysis of construction enterprises and are based on risk factors and uncertainties values used in cost estimation. The analysis will be performed for both concrete and steel solutions. Results will be presented in tables and charts. All data will be then analyzed in the computer program ANSLAG provided by the supervisor and NTNU University. Computer analysis will conclude in final uncertainty projection and cost estimations for both construction solutions. Report will conclude then on results comparison with adequate comments

Construction Management of Randselva bridge - Assessment between two construction methods: cantilever concrete and steel-box method.

Purpose of the master thesis is to perform a construction and cost analysis of two proposed solutions for the Randselva bridge on E16 roadway. Project data is based on information data given from Statens Vegvesen , Trondheim along with MultiConsult construction company. Information data consist of all aspects of construction: from geotechnical surveys and geological inspections to final construction solutions with drawings, stated in further tables of contents. Construction analysis will be performed as static system analysis with given cross-sections and materials, without designing the sections. Optimization process will be performed in order to update the further cost estimates. All calculation data will be processed and analyzed in software SoFiSTiK AG . Profitability and cost analysis will consist of uncertainty analysis in the Projection method along with the Successive calculation method . Both methods are popular in project management and financial analysis of construction enterprises and are based on risk factors and uncertainties values used in cost estimation. The analysis will be performed for both concrete and steel solutions. Results will be presented in tables and charts. All data will be then analyzed in the computer program ANSLAG provided by the supervisor and NTNU University. Computer analysis will conclude in final uncertainty projection and cost estimations for both construction solutions. Report will conclude then on results comparison with adequate comments

Period-Luminosity Relations for Galactic classical Cepheids in the Sloan bands

We present the first period-luminosity (PL) and period-Wesenheit (PW) relations in the Sloan-Pans-STARRS gP1rP1iP1 bands for classical fundamental mode Cepheids in the Milky Way. We used a relatively modest number of 76 stars for the PL and 84-85 stars for the PW relations calibration. The data for the project were collected with the network of 40-cm telescopes of Las Cumbres Observatory, and Gaia Data Release 3 parallaxes were used for the calculations. These gri-band PL and PW relations calibrations will be a useful tool for distance determinations in the era of large sky surveys using the Sloan photometric system, especially with the near-future start of the Large Synoptic Survey of Space and Time (LSST).Comment: 31 pages, 7 figures, 3 tables, Accepted for publication in Ap

To what extent are bryophytes efficient dispersers?

1. Bryophytes are typically seen as extremely efficient dispersers. Experimental evidence suggests that efficient short-distance dispersal coupled with random long-distance dispersal (LDD) leads to an inverse isolation effect. Under the latter, a higher genetic diversity of colonizing propagules is expected with increasing isolation, counteracting differentiation beyond the range of short-distance dispersal. 2. This expectation is tested from a review of evidence on spatial genetic structure and analyses of isolation-by-distance (IBD) at different scales. 3. A decay of the IBD signal, characterized by non-significant slopes between kinship coefficients and geographic distance was observed beyond 100 m. A second slope shift was observed at distances larger than 1 km, with a proportion of significant slopes in more than one third of the datasets. 4. The decay of the IBD signal beyond 100 m, which reflects efficient LDD, is consistent with the inverse isolation hypothesis. Persistence of a significant IBD signal at medium ranges in one third of the analysed cases suggests, however, that the inverse isolation effect is not a rule in bryophyte spore dispersal. Furthermore, the higher proportion of significant IBD patterns observed at scales over 100 km likely marks the limits of regional dispersal, beyond which an increasingly smaller proportion of spores travel. 5. Synthesis. We discuss the differences between experimental and genetic estimates of spore dispersal and conclude that geographic distance remains a significant proxy of spore colonization rates, with major consequences for our understanding of actual migration capacities in bryophytes, and hence, our capacity to model range shifts in a changing world.Peer reviewe

The Araucaria Project: A study of the classical Cepheid in the eclipsing binary system OGLE LMC562.05.9009 in the Large Magellanic Cloud

We present a detailed study of the classical Cepheid in the double-lined, highly eccentric eclipsing binary system OGLE-LMC562.05.9009. The Cepheid is a fundamental mode pulsator with a period of 2.988 days. The orbital period of the system is 1550 days. Using spectroscopic data from three 4-8-m telescopes and photometry spanning 22 years, we were able to derive the dynamical masses and radii of both stars with exquisite accuracy. Both stars in the system are very similar in mass, radius and color, but the companion is a stable, non-pulsating star. The Cepheid is slightly more massive and bigger (M_1 = 3.70 +/- 0.03M_sun, R_1 = 28.6 +/- 0.2R_sun) than its companion (M_2 = 3.60 +/- 0.03M_sun, R_2 = 26.6 +/- 0.2R_sun). Within the observational uncertainties both stars have the same effective temperature of 6030 +/- 150K. Evolutionary tracks place both stars inside the classical Cepheid instability strip, but it is likely that future improved temperature estimates will move the stable giant companion just beyond the red edge of the instability strip. Within current observational and theoretical uncertainties, both stars fit on a 205 Myr isochrone arguing for their common age. From our model, we determine a value of the projection factor of p = 1.37 +/- 0.07 for the Cepheid in the OGLE-LMC562.05.9009 system. This is the second Cepheid for which we could measure its p-factor with high precision directly from the analysis of an eclipsing binary system, which represents an important contribution towards a better calibration of Baade-Wesselink methods of distance determination for Cepheids.Comment: Accepted to be published in Ap