Information society assessment of development level in Latvia

Maģistra darba tēma ir „Informācijas sabiedrības attīstības līmeņa novērtēšana Latvijā”. Maģistra darba mērķis ir, pamatojoties un teorētisko un praktisko materiālu apkopojumu, aprakstīt un novērtē informācijas un komunikāciju tehnoloģiju nozīmi, lai veiksmīgi novērtētu informācijas sabiedrību, kas sniedz ieskatu par valsts kopējo attīstības līmeni un konkurētspēju. Darba gaitā tika izdarīti secinājumi par Latvijas informācijas sabiedrības attīstību starp Eiropas Savienības valstīm pēc statistiskiem rādītājiem un aprakstošiem indeksiem, kas parāda, ka Latvija attīstības līmenis ir zemāks nekā Eiropas Savienības vidējais līmenis. Darbs ir sadalīts 3 nodaļās un 10 apakšnodaļās. Maģistra darba apjoms ir 64 lappuses, kas ietver 16 tabulas, 22 attēlus, 1 pielikumu un 28 informatīvais avots. Atslēgas vārdi: informācijas un komunikāciju tehnoloģijas, internets, e – pakalpojumi, informācijas sabiedrības indekssThe theme of the master’s thesis is „Information society assessment of development level in Latvia”. The purpose of the master's thesis, based on the theoretical and practical material collection, is to describe and evaluate the information and communication technologies in order to successfully evaluate the information society, which provides an insight into the country's overall development and competitiveness. The course of the work the conclusions were made about Latvian Information Society of the European Union countries by the descriptive statistical indicators and indices, showing that the level of development of Latvia is lower than the European Union average. The paper is divided into 3 chapters and 10 subchapters. The amount of the master’s thesis is 64 pages that include 16 tables, 22 images, 1 appendix and 28 information sources. Keywords: information and communication technologies, the Internet, e - services, Information Society Inde

Colour control and selectivity in TiAlN solar-thermal absorbers

Optical constants for simulations were obtained by R- and T-measurements on TiAlN thin films deposited on Corning 7059 glass. The model parameterized free carrier effects and an inter-band excitation. The calculations demonstrated that the colour effects are due to interference and inter-band absorption around 500 nm in a single layer coating. The peak shifts with the thickness of the thin film which gives a simple way to obtain different colours. Solar absorptance of 86 % can be reached already for a single TiAlN-film on an Al substrate.Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited

Direct characterization of focusing light by negative refraction in a photonic crystal flat lens

We report the experimental measurement of the field distribution of the spot light focused by a two-dimensional photonic crystal flat lens at wavelengths 1.51-1.58 μm. The photonic crystal slab is fabricated on a silicon-on-insulator substrate by the focused-ion-beam direct-milling strategy. We demonstrate the light focusing by the photonic crystal slab through direct observation of the light spot entering into free space at the end facet of the slab lens. The beam profiles as the function of lateral position are measured and the minimal full-width-half-maximum of the beam 1.2 μm (0.77λ) is obtained