Search results for "sporta"
showing 10 items of 1176 documents
Ilgtspējīgas transporta sistēmas izveides iespējas Rīgā
2019
Transporta infrastruktūra ir viens no galvenajiem pilsētas ekonomiskas dzinējspēkiem, tomēr, lai transporta sistēma būtu ilgtspējīga tai ir jāatbilst gan pašreizējām nepieciešamībām, gan nākotnes civilizāciju vajadzībām. Ir jāsabalansē ekonomiskie, sociālie un ekoloģiskie aspekti, reizē samazinot CSNg skaitu, siltumnīcas gāzu emisijas, nodrošinot sasniedzamību, mobilitāti. Maģistra darba mērķis ir izstrādāt priekšlikumus ilgtspējīgas transporta sistēmas izveidei Rīgā. Darbā ir veikta analīze par pašreizējo transporta sistēmu Rīgā un Pierīgā, kā arī izstrādāta transporta infrastruktūras attīstības prognoze līdz 2030. gadam, kas balstīta politikās un konkrētos datos. Uz tā pamata ir izstrādāt…
Cost that is Directly Incurred as a Result of Operating the Train Service on the 1520 mm Rail with Primarily Freight Transportation
2016
AbstractUnder the Directive 2012/34/EU (21 November 2012) “the charges for … [rail] infrastructure … shall be set at the cost that is directly incurred as a result of operating the train service”. This charging rule is new for Baltic States’ railways, where due to the favorable geographic position a full cost application without detalization was possible. Although, a big number of relevant studies on the issue was made in EU, all of them covered only 1435mm railways with primarily passenger transportation. This study has been made in order to understand the impact of train operating on 1520mm rail infrastructure with primarily freight transportation.A gradual model of infrastructure chargin…
Automated Railway Signs Detection. Preliminary Results
2019
Abstract Nowadays safety in railways is mostly achieved by automated system technologies such as ERTMS/ETCS. Nevertheless, on local railways (suburban and regional lines) several tasks still depend on the choices and actions of a human crew. With the aim to improve safety in such type of railways, this research proposes a system for the automatic detection and recognition of railway signs by means of the digital image processing technique. First field applications, carried out on the Italian railway network, show that the proposed system is very accurate (the percentage of correctly detected railway signs is about 97%), even at high train speeds.
On the degree of binder activity of reclaimed asphalt and degree of blending with recycling agents
2020
It is common practice to assume full blending of the aged binder of reclaimed asphalt (RA) within the design of new asphalt mixtures. Although being practical, this assumption has often led designers to asphalt mixtures lacking binder. Hence, going towards recycled asphalt mixtures (RAM) there is a need to have a better understanding of the blending phenomena, to have a general agreement on terminology and finally adapting RA classification and mix design procedures accordingly. This manuscript aims at being both a reference and stimulus for the scientific community to work in this direction and on this basis provides a nomenclature and a theoretical framework of the blending phenomena. The…
Glicerīna transportsistēmas un Hog1 loma raugu šūnu dzīvotspējas saglabāšanā anhidrobiozes stāvoklī
2015
Šī darba mērķis bija izpētīt glicerīna transportsistēmu un Hog1p iespējamo lomu raugu šūnu dzīvotspējas saglabāšanā anhidrobiozes stāvoklī. Lai sasniegtu šo mērķi, izmantoja raugu Saccharomyces cerevisiae BY4741 un tā izogēnos celmus, kuriem trūka viens vai vairāki gēni, kuri ir atbildīgi par glicerīna transportiera Stl1p, glicerīna eksporta kanāla Fps1p un regulatorās Hog1p MAP kināzes ekspresiju raugu šūnās. Darbam bija izvirzīti sekojošie uzdevumi: izpētīt S. cerevisiae BY4741 spējas pāriet anhidrobiozes stāvoklī; novērtēt glicerīna transportsistēmu Stl1p un Fps1p, ka arī Hog1p ietekmi uz raugu šūnu rezistenci pret dehidratāciju; izpētīt raugu spējas pārdzīvot osmotisko stresu un šīs ied…
Standardization of Road Danger Signs in the European Union
2015
The aim of this research is to find a solution for the standardization of road signs in the EU zone by a comparative analysis of different national sign systems to establish a common set from a single country. This work is based on the idea that road sign standardization might increase the safety level of transnational journeys and foster the relationships among the various members of the EU Community. This paper presents the outcome of the first step of the research, which focuses on the harmonization of danger signs. In more detail, a multicriteria approach is applied to rank 19 EU Member States on the basis of three main aspects: the installation cost of new signs, new sign learning issu…
Latvijas Olimpiskās komandas kandidātu emociju dinamika
2021
Maģistra darba mērķis bija pētīt Latvijas Olimpiskās komandas sportistu–kandidātu emociju dinamiku treniņos un sacensībās, kā arī analizēt to iespējamās atšķirības, gatavojoties Olimpiskajām spēlēm “Tokija 2020”. Pētījumā piedalījās 50 Latvijas labākie atlēti (18 sievietes un 32 vīrieši) vecumā no 17 līdz 35 gadiem, kuri pārstāvēja 16 sporta veidus. No 2020.gada janvāra līdz novembrim atlēti ziņoja par piedzīvotajām emocijām treniņos un sacensībās. Datu ieguvei tika izmantota adaptēta un lietošanai viedtālruņos pielāgota Ženēvas emociju apļa 3.0 versija. Pētījumā tika noskaidrots, ka emocijas, ko sportisti piedzīvo pirms treniņiem un sacensībām ir relatīvi līdzīgas, taču pēc treniņiem pieau…
A sustainable city environment through child safety and mobility:A challenge based on ITS?
2012
Our cities should be designed to accommodate everybody, including children. We will not move toward a more sustainable society unless we accept that children are people with transportation needs, and ‘bussing’ them around, or providing parental limousine services at all times, will not lead to sustainability. Rather, we will need to make our cities walkable for children, at least those above a certain age. Safety has two main aspects, traffic safety and personal safety (risk of assault). Besides being safe, children will also need an urban environment with reasonable mobility, where they themselves can reach destinations with reasonable effort; else they will still need to be driven. This p…
Beliefs and attitudes of Australian learner drivers toward driving and avoiding driving through floodwater
2023
Driving through floodwater is a significant cause of flood-related injury and mortality, and opportunities exist to embed safe driving messages regarding floodwaters to novice drivers in graduated driver licensing schemes. To inform future educational efforts, we investigated the beliefs and attitudes of Australian learner drivers about driving and avoiding driving through floodwaters. Methods: The study adopted a cross-sectional correlational design with measures drawn from the theory of planned behaviour and administered within an online survey. Phase 1 (N = 44 learner drivers) aimed to identify the core beliefs associated with driving through floodwater. Phase 2 (N = 250 learner drivers)…
Kustību rotaļas kā saskarsmes veidošanas līdzeklis sporta nodarbībās sākumskolā
2018
Bakalaura darba autore: Nadežda Girko. Bakalaura darba nosaukums: „Kustību rotaļas kā saskarsmes prasmju veidošanās līdzeklis sporta nodarbībās sākumskolā”. Darba mērķis: izzināt saskarsmes prasmju attīstību veicinošus faktorus kustību rotaļās sporta nodarbībās sākumskolā. Darba uzdevumi: 1.Izzināt un analizēt pedagoģisko un psiholoģisko literatūru par pētāmo problēmu; 2.Noskaidrot saskarsmes jēdziena būtību; 3.Analizēt saskarsmes prasmes un izpētīt saskarsmes struktūru; 4.Veikt empīrisko pētījumu sākumskolā. Darba pirmajā nodaļā ir apkopota literatūra par saskarsmes būtību, saskarsmes jēdzienu, saskarsmes veidiem, saskarsmes prasmēm un saskarsmes struktūru dažādu autoru teorijās. Otrajā no…