Search results for "maska"
showing 10 items of 138 documents
Spatio-temporal dynamics of density-dependent dispersal during a population colonisation
2019
Predicting population colonisations requires understanding how spatio‐temporal changes in density affect dispersal. Density can inform on fitness prospects, acting as a cue for either habitat quality, or competition over resources. However, when escaping competition, high local density should only increase emigration if lower‐density patches are available elsewhere. Few empirical studies on dispersal have considered the effects of density at the local and landscape scale simultaneously. To explore this, we analyze 5 years of individual‐based data from an experimental introduction of wild guppies Poecilia reticulata. Natal dispersal showed a decrease in local density dependence as density at…
Latvijas Vēstures Institūta Žurnāls. 2011, Nr. 4 (81)
2011
Valsts kultūrkapitāla fonds; Valsts pētījuma programma "Nacionālā identitāte: valoda, Latvijas vēsture, kultūra un cilvēkdrošība"
Trap-assisted spectroscopy with REXTRAP
2007
International audience; As one of the fashionable techniques for nuclear spectroscopy experiments, the beam manipulation in gas-filled Penning traps permits the accurate measurement of some of the ground state properties of exotic nuclides. It was recently applied using REXTRAP for the measurement of the half-life of 38Ca, one of the 0+ → 0+ β-decaying nuclide of interest for the determination of the Ft value for super-allowed transitions, and the test of the unitarity of the CKM matrix. The experimental setup and the original method of beam purification adopted for this measurement is presented.
Measurement of CP asymmetry in Bs0 → Ds ∓K± decays
2014
Journal of high energy physics 2018(3), 59 (2018). doi:10.1007/JHEP03(2018)059
New physics in $B$ meson mixing: future sensitivity and limitations
2020
The mixing of neutral mesons is sensitive to some of the highest scales probed in laboratory experiments. In light of the planned LHCb Upgrade II, a possible upgrade of Belle II, and the broad interest in flavor physics in the tera-Z phase of the proposed FCC-ee program, we study constraints on new physics contributions to Bd and Bs mixings which can be obtained in these benchmark scenarios. We explore the limitations of this program, and identify the measurement of |Vcb| as one of the key ingredients in which progress beyond current expectations is necessary to maximize future sensitivity. We speculate on possible solutions to this bottleneck. Given the current tension with the standard mo…
Zvaigžņotā Debess: 2010/11, Ziema (210)
2010
Contents: “ZVAIGŅOTĀ DEBESS” FORTY YEARS AGO: Bursting Stars. J. Francman (abridged). Geodesists Help Renew the Spire of St. Peter’s Church. J. Klētnieks (abridged). DEVELOPMENTS in SCIENCE: The Solar Neutrino Problem. O. Smirnova. NEWS: At Last the Planet at the Star β Pictoris Is Imaged. A. Alksnis, Z. Alksne. SPACE RESEARCH and EXPLORATION: The Trail of an Asteroid Reveals a Recent Collision. A. Alksnis. INTERNATIONAL YEAR of ASTRONOMY 2009: International Year of Astronomy 2009 in Philately. The Rest of the World except Series EUROPA (concluded). J. Limansky. ACADEMIC STAFF of the UNIVERSITY of LATVIA: Assistant Professor in Physics Ojārs Šmits (24.04.1930.-14.03.1993.) of the Latvian Un…
Weak decay ofΛc+for the study ofΛ(1405)andΛ(1670)
2015
We study the ${\mathrm{\ensuremath{\Lambda}}}_{c}$ decay process to ${\ensuremath{\pi}}^{+}$ and the meson-baryon final state for the analysis of $\mathrm{\ensuremath{\Lambda}}$ resonances. Considering the Cabibbo-Kobayashi-Maskawa matrix, color suppression, diquark correlation, and the kinematical condition, we show that the final meson-baryon state should be in a pure $I=0$ combination, when the meson-baryon invariant mass is small. Because the $I=1$ contamination usually makes it difficult to analyze $\mathrm{\ensuremath{\Lambda}}$ resonances directly from experiments, the ${\mathrm{\ensuremath{\Lambda}}}_{c}$ decay is an ideal process to study $\mathrm{\ensuremath{\Lambda}}$ resonances.…
Pētera Šmita sarakste ar Jāni Misiņu sakarā ar lūgumu atsūtīt lugas Vladivostokas Latviešu biedrības teātrim
1916
P. Šmits lūdz J. Misiņu atsūtīt Vladisvotokas Latviešu biedrības teātrim dažādu autoru - gan latviesu, gan cittautu autoru kopumā 40 lugas, Dziesmu lugām vēlētos arī notis. Ja nu gadījuma pats nevarot, tad lai lūgumu nododot citam grāmatu veikalam.
Bezpajumtnieku dzīves telpa un ikdienas prakses Maskavas forštatē
2016
Bezpajumtnieki ir mūsdienu pilsētu sastāvdaļa, kur viņu darbības un dzīvesveids iespaido pilsētu ainavu, tāpēc ir nepieciešams izvērtēt viņu dzīves telpu un ikdienas prakses, lai spētu novērtēt šo ietekmi. Kā pētījuma vieta tika izvēlēta Rīgas pilsētas Maskavas forštates apkaime, kur ikdienā bieži var sastapt bezpajumtniekus. Lai sasniegtu izvirzīto mērķi, tika uzstādīti 4 uzdevumi un 3 jautājumi uz, kuriem pētījuma laikā tika rasta atbilde. Darbā tika pielietotas sekojošās metodes: (1) zinātniskās literatūras apkopošana; (2) plašsaziņas līdzekļu satura analīze; (3) novērojumi; (4) daļēji strukturētas intervijas un (5) līdziešanas metode. Pielietojot pētījuma metodes, tika iegūti rezultāti,…
Discrete Symmetries CP, T, CPT
2016
The role of Symmetry Breaking mechanisms to search for New Physics is of highest importance. We discuss the status and prospects of the Discrete Symmetries CP, T, CPT looking for their separate Violation in LHC experiments and meson factories.