Search results for "dab"
showing 10 items of 1280 documents
In memory of the celebration of the 50th Jubilee of the Riga Natural Sciences Association
1895
Speise - Karte zur Erinnerung an die Feier des 50jr. Jubiläums des Naturforscher-Verein zu Riga mit mit Elementen der Paläontologie und Cartoons. Rīgas Dabaspētnieku biedrības 50 gadu jubilejas piemiņas ēdienkarte ar paleontoloģijas elementiem un karikatūrām. (BOT15515)
Jaunākā pirmsskolas vecuma bērna intereses par dabu rosināšana rotaļās un spēlēs
2018
Bakalaura darba -„Jaunākā pirmsskolas vecuma bērna intereses par dabu rosināšana rotaļās un spēlēs” - pētījuma mērķis ir teorētiski un praktiski izzināt un pamatot rotaļas, spēles izmantošanas iespējas jaunākā pirmsskolas vecuma bērnu intereses par dabu rosināšanai. Šis darbs ir Latvijas Universitātes pedagoģijas fakultātes nepilna laika klātienes otrā līmeņa profesionālās izglītības studiju programmas „Pirmsskolas un sākumsskolas izglītības skolotājs” studentes Agneses Frīdvaldes bakalaura darbs. Darba vadītāja ir mag. paed., lektore L.Priede. Bakalaura darbs sastāv no divām galvenajām daļām: teorētiskās un praktiskās. Bakalaura darba Teorētiskā daļa, galvenokārt, balstīta uz dažādu pedago…
Vides piesārņojuma krimināltiesiskais regulējums
2018
Cilvēks. Dzīvnieks. Daba. Visi minētie aspekti, savstarpēji mijiedarbojieties, veido mūsu pasaules, katrs tai sniedzot savu ieguldījumu un jēgu. Vide ir visu šo faktoru kopums – nodarot kaitējumu videi, mēs nodarām kaitējumu arī sev. Bieži vien cilvēki aizmirst par visu, ko mums sniedz daba, kas mūs ieskauj, un ka bez tās cilvēce iznīktu. Tīra vide un pietiekams resursu daudzums ir nepieciešams mūsu sabiedrības pastāvēšanai, jo no katra elementa, katras sugas ir atkarīga citu pastāvēšana. Vides piesārņojums mūsdienās ir aktuāla tēma, jo šis ir pēdējais brīdis, kad cilvēkiem ir iespēja mainīt pastāvošo nolaidību attiecībā uz apkārtējo dabu. Šī ir sabiedrības pēdējā iespēja pievērsties dzīvni…
Calibrating a microscopic traffic simulation model for roundabouts using genetic algorithms
2018
The paper introduces a methodological approach based on genetic algorithms to calibrate microscopic traffic simulation models. The specific objective is to test an automated procedure utilizing genetic algorithms for assigning the most appropriate values to driver and vehicle parameters in AIMSUN. The genetic algorithm tool in MATLAB® and AIMSUN micro-simulation software were used. A subroutine in Python implemented the automatic interaction of AIMSUN with MATLAB®. Focus was made on two roundabouts selected as case studies. Empirical capacity functions based on summary random-effects estimates of critical headway and follow up headway derived from meta-analysis were used as reference for ca…
A computationally fast alternative to cross-validation in penalized Gaussian graphical models
2015
We study the problem of selection of regularization parameter in penalized Gaussian graphical models. When the goal is to obtain the model with good predicting power, cross validation is the gold standard. We present a new estimator of Kullback-Leibler loss in Gaussian Graphical model which provides a computationally fast alternative to cross-validation. The estimator is obtained by approximating leave-one-out-cross validation. Our approach is demonstrated on simulated data sets for various types of graphs. The proposed formula exhibits superior performance, especially in the typical small sample size scenario, compared to other available alternatives to cross validation, such as Akaike's i…
A paradigm of extreme rainfall pluvial floods in complex urban areas: the flood event of 15 July 2020 in Palermo (Italy)
2021
Abstract. In the last few years, some regions of the Mediterranean area have witnessed a progressive increase in extreme events, such as urban and flash floods, as a response to the increasingly frequent and severe extreme rainfall events, which are often exacerbated by the ever-growing urbanization. In such a context, the urban drainage systems may not be sufficient to convey the rainwater, thus increasing the risk deriving from the occurrence of such events. This study focuses on a particularly intense urban flood that occurred in Palermo (Italy) on 15 July 2020; it represents a typical pluvial flood due to extreme rainfall on a complex urban area that many cities have experienced in rece…
"Table 10" of "A study of strange particle production in nu/mu charged current interactions in the NOMAD experiment."
2002
Ratios of measured yields for K0S/LAMBDA and LAMBDABAR/LAMBDA as a functionof the Bjorken X variable.
"Table 2" of "A study of strange particle production in nu/mu charged current interactions in the NOMAD experiment."
2002
Measured yields as a function of E, the neutrino energy.
"Table 7" of "A study of strange particle production in nu/mu charged current interactions in the NOMAD experiment."
2002
Ratios of measured yields for K0S/LAMBDA and LAMBDA/LAMBDABAR as a functionof E, the neutrino energy.
Solving the Problems of Inspection Planning under Parametric Uncertainty of Underlying Models
2013
Certain fatigued structures must be inspected in order to detect fatigue damages that would otherwise not be apparent. A technique for obtaining optimal inspection strategies is proposed for situations where it is difficult to quantify the costs associated with inspections and undetected failure. For fatigued structures for which failures (fatigue damages) are only detected at the time of inspection, it is important to be able to determine the optimal times of inspection. Fewer inspections will lead to lower fatigue reliability of the structure upon demand, and frequent inspection will lead to higher cost. When there is a fatigue reliability requirement, the problem is usually to develop an…