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A modified version of the point coordination function (PCF) in the IEEE 802.11 standard called Modified PCF has been introduced as an approach to improve channel utilization over the standard. It has been shown in our previous work that the utilization of the wireless channel can be significantly improved. In this paper, we investigate the performance of the Modified PCF when it is applied with a
Transformative change of energy systems towards distributed renewable technologies requires not only technological but also organisational innovation in order to engage broad segments of the private consumer group. Using the business model concept as an analytical tool, this comparative study investigates organisational configurations related to the deployment of customer-sited photovoltaic (PV) s
In the present contribution we review some recent work on scattering of electromagnetic waves from various geophysical targets, by means of P. C. Waterman's approach. As an introduction to the specific applications to be described, a general outline is given of the basic features of this approach, as applied to electromagnetic waves. The algebraic structure of the resulting equations for single an
This article deals with excited-state properties and spectroscopies which probe them. We argue that the orbitals obtained in local density theory form an excellent basis for discussing excited states and that the self-energy operator (or optical potential) associated with one-electron-type excited states is closely diagonal in such a basis. This diagonality often leads to considerable simplificati
A prevailing hypothesis is that neurogenesis is reduced in depression and that the common mechanism for antidepressant treatments is to increase it in adult hippocampus. Reduced neurogenesis has been shown in healthy rats exposed to stress, but it has not yet been demonstrated in depressed patients. Emerging studies now indicate that selective serotonin reuptake inhibitors can, exert behavioral ef
Three theoretical atomic structure projects of interest for the astrophysical community and the lightning industry which are partially finished will be presented. Extensive ab initio calculations of properties of astrophysical interest has been done or are under its way for Ga I, Ga II, Ga III, In II and In III. The aim of the project is to also make calculations for In I, Tl I, Tl II and Tl III.
This thesis concerns the activity of expressing understanding with words. The overall aim is to explore, analyse and describe how 64 children aged 6, 10 and 14 expressed their understanding of certain physical phenomena in reflective dialogues. In the dialogues, the children were asked to reflect over expressions which they had used to explain their conception of the problem. Four studies were con
A simple computationally effective method is developed for solving the Ben Daniel - Duke equations for nanowire semiconductor heterostructures. The method allows eigenstates and associated energy levels of nanowires with varying cross- sectional shape and/ or varying composition to be obtained, and is based on expanding the envelope function eigenstates on local eigenstates of the corresponding cr
In this article we describe and discuss implementation of a weighted simulation procedure, importance sampling, in the context of nonparametric linkage analysis. The objective is to estimate genome-wide p-values, i.e. the probability that the maximal linkage score exceeds a given threshold under the null hypothesis of no linkage. In order to reduce variance of the p-value estimate for large thresh
Electrostrictive polyurethane (PU) elastomers belong to the class of materials commonly referred to as electroactive polymers (EAP). These materials have their use in a variety of applications, including biomimetics and microrobotics where traditional engineering components may fall short. PU is one of the materials considered for so called dielectric actuators, where the electromechanical respons
Manipulation of specific binding and recycling of materials are two important aspects for practical applications of molecularly imprinted polymers. In this work, we developed a new approach to control the dynamic assembly of molecularly imprinted nanoparticles by surface functionalization. Molecularly imprinted polymer nanoparticles with a well-controlled core-shell structure were synthesized usin
In this work we present a practical thermogravimetric method for quantifying the IEC (ion exchange capacity) decrease of hydroxide exchange membranes (HEMs) during intrinsic degradation mainly occurring through nucleophilic attack of the anion exchanging group by hydroxide ions. The method involves measuring weight changes under controlled temperature and relative humidity. These conditions are cl
Measurements of the anisotropic flow coefficients v2{Ψ2},v3{Ψ3},v4{Ψ4}, and v4{Ψ2} for identified particles (π±,K±, and p+p) at midrapidity, obtained relative to the event planes Ψm at forward rapidities in Au + Au collisions at sNN=200GeV, are presented as a function of collision centrality and particle transverse momenta pT. The vn coefficients show characteristic patterns consistent with hydrod
