Search results for "PIE"
showing 10 items of 4404 documents
Corpus iuris civilis
1509
Corpus iuris civilis
1509
Corpus iuris civilis
1509
Latvijas Universitātes Raksti. 755. sēj.
2010
Gustavs Vanags un viņa mantojums
2021
Par godu ķīmiķa organiķa Gustava Vanaga (1891-1965) 130. dzimšanas gada dienai apkopota profesora Vanaga biogrāfija, kurā iekļauta informācija no Gustavam Vanagam veltītajām biogrāfijas grāmatām un Latvijas ķīmijas vēstures muzeja krājumā esošajiem memoriālajiem materiāliem.
Psiholoģija (Latvijas Universitātes Raksti, 801. sēj.)
2014
Influence de la symétrie et de la taille de la molécule adsorbée sur le processus d'adsorption des composés éthyléniques sur une zéolithe de topologi…
2005
This manuscript lies within the scope of the understanding of the stepped isotherm observed during adsorption, on MFI zeolites, of some organic compounds which have a similar size to that of the pore opening of zeolite. During this work, the process of adsorption of ethylene and tetramethylethylene is initially studied by gravimetry and then by in situ infrared spectroscopy. This last technique enables to follow simultaneously the modifications of the adsorbent and the adsorbate. The analysis of these data lets suppose that the step in adsorption isotherm can be explained by taking account simultaneously of the symmetry and the size of the admolecule. In addition to the infrared bands chara…
Limit on the diffuse flux of ultrahigh energy tau neutrinos with the surface detector of the Pierre Auger Observatory
2009
Data collected at the Pierre Auger Observatory are used to establish an upper limit on the diffuse flux of tau neutrinos in the cosmic radiation. Earth-skimming ντ may interact in the Earth's crust and produce a τ lepton by means of charged-current interactions. The τ lepton may emerge from the Earth and decay in the atmosphere to produce a nearly horizontal shower with a typical signature, a persistent electromagnetic component even at very large atmospheric depths. The search procedure to select events induced by τ decays against the background of normal showers induced by cosmic rays is described. The method used to compute the exposure for a detector continuously growing with time is de…
Anisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory
2011
The Pierre Auger Collaboration has reported evidence for anisotropy in the distribution of arrival directions of the cosmic rays with energies $E>E_{th}=5.5\times 10^{19}$ eV. These show a correlation with the distribution of nearby extragalactic objects, including an apparent excess around the direction of Centaurus A. If the particles responsible for these excesses at $E>E_{th}$ are heavy nuclei with charge $Z$, the proton component of the sources should lead to excesses in the same regions at energies $E/Z$. We here report the lack of anisotropies in these directions at energies above $E_{th}/Z$ (for illustrative values of $Z=6,\ 13,\ 26$). If the anisotropies above $E_{th}$ are du…
ADO.NET objektu-relāciju kartēšanas modernizācija esošai sistēmai
2019
Industrijā joprojām tiek uzturētas .NET ietvarā veidotas sistēmas, kuru izstrāde tika uzsākta pirms vairāk kā 15 gadiem, kad vēl nebija pieejami dažādi ORM ietvaru risinājumi. Līdz ar to, izstrādātāji saskaras ar dažādām datu piekļuves slāņa problēmām - ierobežotu funkcionalitāti, apgrūtinātu sistēmas migrāciju uz jaunākiem ietvariem, drošības riskiem. u.c. Esošo risinājumu aizstāšana ar modernu ORM, ļautu šīs problēmas risināt. Bakalaura darba mērķis ir identificēt problēmas, kas rodas, aizstājot uz Microsoft ADO.NET bāzētu sistēmas datu piekļuves slāni ar Entity Framework ORM ietvaru, kā arī izpētīt migrācijas ieguvumus un trūkumus. Pētījuma rezultātā tika izstrādāta jauna datu piekļuves …