Search results for "TLA"
showing 10 items of 1764 documents
Linear relationship between effective radius and precipitation water content near the top of convective clouds: measurement results from ACRIDICON–CH…
2021
Quantifying the precipitation within clouds is a crucial challenge to improve our current understanding of the Earth's hydrological cycle. We have investigated the relationship between the effective radius of droplets and ice particles (re) and precipitation water content (PWC) measured by cloud probes near the top of growing convective cumuli. The data for this study were collected during the ACRIDICON–CHUVA campaign on the HALO research aircraft in clean and polluted conditions over the Amazon Basin and over the western tropical Atlantic in September 2014. Our results indicate a threshold of re∼13 µm for warm rain initiation in convective clouds, which is in agreement with previous studie…
Das Eherecht Lettlands
1933
Izvilkums no: Rechtsverfolgung im internationaler Verkehr / Leske-Loewenfeld. - 2. Aufl. - Bd. 4 : Das Eherecht der europaischen Staaten und ihrer Kolonien, T. 1, Lfg. 2., S. 526-578.
Wasserstand und Eisbedeckung der Düna bei Riga
1887
Atsevišķs novilkums no: "Bericht über die Vorarbeiten für die systematische Entwässerung und Reinigung der Stadt Riga".
Starptautisko organizāciju loma Latvijas valsts ekonomiskajā drošībā
2016
Bakalaura darba mērķis ir noteikt, kādi ir nozīmīgākie ekonomiskās drošības rādītāji, ko ietekmējusi Latvijas dalība starptautiskajās organizācijās. Darba mērķa sasniegšanai izvirzīti sekojoši uzdevumi: 1.Iepazīties ar nacionālās drošības koncepcijām; 2.Pētīt Latvijas valsts būtiskākos ekonomiskās drošības indikatorus; 3.Analizēt Latvijas aktuālo ekonomisko situāciju; 4.Pētīt galveno starptautisko organizāciju lomu Latvijas ekonomiskajā drošībā; 5.Izvērtēt Latvijas ieguvumus un ieguldījumus starptautiskajās organizācijās. Darbā tiek aplūkota šā brīža Latvijas ekonomiskā situācija atrodoties starptautisko organizāciju (ANO, NATO) dalībvalstu lokā. Starptautisko organizāciju prasības paredz z…
Beam test results of IHEP-NDL Low Gain Avalanche Detectors(LGAD)
2020
A High-Granularity Timing Detector (HGTD) is proposed based on the Low-Gain Avalanche Detector (LGAD) for the ATLAS experiment to satisfy the time resolution requirement for the up-coming High Luminosity at LHC (HL-LHC). We report on beam test results for two proto-types LGADs (BV60 and BV170) developed for the HGTD. Such modules were manufactured by the Institute of High Energy Physics (IHEP) of Chinese Academy of Sciences (CAS) collaborated with Novel Device Laboratory (NDL) of the Beijing Normal University. The beam tests were performed with 5 GeV electron beam at DESY. The timing performance of the LGADs was compared to a trigger counter consisting of a quartz bar coupled to a SiPM read…
Konferenz der Nationalen Komitees der Weltkraftkonferenz Lettlands, Estlands und Litauens: [Vorträge]
1939
Kopsavilkumi angļu valodā
Going standalone and platform-independent, an example from recent work on the ATLAS Detector Description and interactive data visualization
2019
Until recently, the direct visualization of the complete ATLAS experiment geometry and final analysis data was confined within the software framework of the experiment. To provide a detailed interactive data visualization capability to users, as well as easy access to geometry data, and to ensure platform independence and portability, great effort has been recently put into the modernization of both the core kernel of the detector description and the visualization tools. In this proceedings we will present the new tools, as well as the lessons learned while modernizing the experiment’s code for an efficient use of the detector description and for user-friendly data visualization. Until rece…
Ophthalmic: Laboratorio virtual para el diseño de nuevas lentes oftálmicas
2013
This work presents a new virtual laboratory, OPHTALMIC, developed with MATLAB GUI for using in Optics and Optometry courses as a computer tool for studying the focusing properties of multifocal diffractive both on unconventional structures both periodic and aperiodic. This virtual laboratory enables students to quickly and easily analyze the influence of the different parameters of construction and find the best solution for a user.
Online optimization of a multi-conversion-level DC home microgrid for system efficiency enhancement
2017
In this paper, an on-line management system for the optimal efficiency operation of a multi-bus DC home distribution system is proposed. The operation of the system is discussed with reference to a distribution system with two conversion stages and three voltage levels. In each of the conversion stages, three paralleled DC/DC converters are implemented. A Genetic Algorithm performs the on-line optimization of the DC network’s global efficiency, generating the optimal current sharing ratios of the concurrent power converters. The overall DC/DC conversion system including the optimization section is modelled using MATLAB/Simulink. Thanks to the implemented online algorithm, considering …
Observer-Based Robust Control for Hydraulic Velocity Control System
2013
Published version of an article in the journal: Mathematical Problems in Engineering. Also available from the publisher at: http://dx.doi.org/10.1155/2013/689132 Open access This paper investigates the problems of robust stabilization and robust control for the secondary component speed control system with parameters uncertainty and load disturbance. The aim is to enhance the control performance of hydraulic system based on Common Pressure Rail (CPR). Firstly, a mathematical model is presented to describe the hydraulic control system. Then a novel observer is proposed, and an observed-based control strategy is designed such that the closed-loop system is asymptotically stable and satisfies …