Search results for "343"
showing 10 items of 32 documents
SEA LEVEL VARIATIONS AT THE LATVIAN COASTAL HYDROLOGIC STATIONS
2016
The objective of this paper is to analyse water level variations of the Baltic Sea on the Latvian coast. This is important because the Baltic Sea exhibits a number of remarkable phenomena. One of them is the sea level variations due to winds, complicated by the shape of the gulfs and islands. Under this influence the range of the sea level variations can reach 3 m on the coasts of gulfs. However, the tidal variations of the Baltic Sea range in the order of centimetres only. In the frame of this study, using hourly time series of the sea level records from 7 Latvian coastal hydrologic stations and employing spectral analysis, it has become feasible to identify diurnal and semi-diurnal tide e…
CHANGING THE NATIONAL HEIGHT SYSTEM AND GEOID MODEL IN LATVIA
2016
According to the decision of IAG Reference Frame Sub-commission for Europe (EUREF) the EVRF2007 solution as the vertical reference has to be deployed in EU countries.The new height system LAS-2000,5 had been enacted as the European Vertical Reference System‘s EVRF2007 realization in Latvia and the new geoid model LV‘14 had been introduced by Latvian authority Latvian Geospatial Information Agency. However, the appreciation of the quality of quasi-geoid model LV‘14 is rather contradictious among the users in Latvia. The independent estimate and comparison of the two Latvian geoid models developed till now has been performed by the Institute of Geodesy and Geoinformatics. Previous geoid model…
Field tests of astrometric subsystem
2016
The paper presents results of astrometric subsystem’s functionality tests for space object laser ranging and astrometric position determination device, which is under construction in the Institute of Geodesy and Geoinformatics (GGI) of the University of Latvia. Properties of hardware performance for astrometric image acquisition were evaluated and optimal parameters have been selected. Software for image processing and calculation of instrument orientation was tested and adjustments have been made for real-time operation support. Object tracking properties were evaluated, and mount error model parameters were calculated, using test measurements.
Digital zenith camera of the University of Latvia
2016
Design of digital zenith camera in Institute of Geodesy and Geoinformatics of the University of Latvia started in 2009. Now, after tests of a prototype, improvements of design and manufacturing of the second version, it has reached operational status. The paper describes construction of camera, features of it‘s control software. Vertical deflection determination results are discussed.
Traffic Flow Variables Estimation: An Automated Procedure Based on Moving Observer Method. Potential Application for Autonomous Vehicles
2019
Abstract The estimation of traffic flow variables (flow, space mean speed and density) plays a fundamental role in highways planning and designing, as well as in traffic control strategies. Moving Observer Method (MOM) allows traffic surveys in a road, or in a road network. This paper proposes a novel automated procedure, called MOM-AP based on Moving Observer Method and Digital Image Processing (DIP) Technique able to automatically detect (without human observers) and calculate flow q, space mean speed vs and density k in case of stationary and homogeneous traffic conditions. In order to evaluate how reliable is the MOM-AP, an experiment has been carried out in a segment of one two-lane si…
Rapportering av samfunnsansvar : har innføringen av regnskapsloven § 3-3 c ført til økt kvalitet på samfunnsansvarsrapporteringen?
2016
Masteroppgave økonomi og administrasjon - Universitetet i Agder 2016 I 2012 la regjeringen fram et lovforslag til et nytt krav om at store foretak skal rapportere om hvordan de følger opp sitt samfunnsansvar. Regjeringen ønsket med dette at et lovfestet rapporteringskrav ville bidra til økt åpenhet og at det skal motivere flere foretak til å integrere og tenke samfunnsansvar i virksomheten. Fra og med regnskapsåret 2013 ble regnskapsloven § 3-3c innført, og store foretak har vært pliktige til å gi en årlig rapportering om deres ikke-finansielle resultater. Rapporteringen er knyttet til begrepet samfunnsansvar, og omfatter i følge loven opplysninger ved hensyn til fire områder: menneskeretti…
El testigo ante el tribunal penal internacional
2010
Las graves vulneraciones de los Derechos humanos durante el siglo XX y sus consecuencias han llevado a una concienciación de una parte de los responsables políticos y de la opinión pública, sobre la necesidad de avanzar en la configuración y protección efectiva de los Derechos humanos. En este camino destacan, sin lugar a dudas, dos iniciativas: la Declaración Universal de los Derechos humanos de 1948 y la creación de un Tribunal Penal Internacional de carácter permanente en 1998, ambas auspiciadas por la Organización de las Naciones Unidas. Este tribunal, por contraste con los de Nüremberg y Tokio, resultantes de la Segunda Guerra Mundial, no se le puede criticar por no respetar los princi…
Stolen innocence? Observance of the EU Directive on presumption of innocence by Spanish crime reporting
2021
This paper examines the compliance of Spanish crime reporting with the principles of the 2016 EU Directive on presumption of innocence, which aims at preventing the publication of information that might bias the public and the jurors against the suspect. A content analysis applied to a sample of 200 crime news stories published by eleven of the most popular print and online news platforms in 2018 reveals that the Spanish press coverage of crime is centered around the pre-trial and sentence stages, with little attention to the oral trial. The full name and the face portrait of the suspect appear in roughly one-third of the stories, but this overwhelmingly happens in news stories reporting on…
Polar motion prediction using the combination of SSA and Copula-based analysis
2018
The real-time estimation of polar motion (PM) is needed for the navigation of Earth satellite and interplanetary spacecraft. However, it is impossible to have real-time information due to the complexity of the measurement model and data processing. Various prediction methods have been developed. However, the accuracy of PM prediction is still not satisfactory even for a few days in the future. Therefore, new techniques or a combination of the existing methods need to be investigated for improving the accuracy of the predicted PM. There is a well-introduced method called Copula, and we want to combine it with singular spectrum analysis (SSA) method for PM prediction. In this study, first, we…
Mechanisms of covalent dimerization on a bulk insulating surface
2017
Combining density functional theory and high resolution NC-AFM experiments, we have studied the on surface reaction mechanisms' responsible for the covalent dimerization of 4-iodobenzoic acid (IBA) organic molecules on the calcite (10.4), insulating surface. When annealed at 580 K, the Molecules assemble in one-dimensional chains of covalently bound dimers: The chains have a unique orientation and result from a complex set of processes, including a nominally rather. costly double dehalogenation reaction followed by dimerization. First, focusing on the latter two processes and using the nudged elastic band method, we analyze a number of possible mechanisms involving one and two molecules, an…