Search results for "kLa"
showing 10 items of 787 documents
"Jaunā Sieviete" literatūrā Veimāras Republikas laikā
2018
Šajā darbā es plaši strādāju ar terminiem „Sieviete“ un „Jaunā Sieviete“ . Šī bakalaura darba mērķis ir izpētīt periodu starp "Zelta divdesmitajiem", un no tā izrietošo ekonomisko krīzi un līdz 20. gds trīsdesmitajiem gadiem. Šajā darbā tiek stāstīts par Veimāras Republiku laika posmā no 1918. līdz 1933. gadam (tas ir, starp novembrī revolūcijas Vācijā un nacistu varas sagrābšanu). Kā arī daudz laika būs veltīts „Jaunam Sievietes“ tēlam , "jaunu sieviešu" uzvedību Veimāras Republikā un sieviešu lineāru attīstību dažiem gadsimtiem. Apkopojot tā laika notikumus (pirmā Parlamenta proklamēšana, ārpolitikas satraukumi, pirmā demokrātiskā konstitūcija), būs vieglāk saprast „Jauno sieviešu“ domāša…
N-attiecības ietekme uz izdzīvotību pacientiem ar kuņģa vēzi pēc gastrektomijām ar paplašinātām limfadenektomijām
2021
Ievads: N-attiecība ir prognostisks rīks, kas spēj samazināt TNM stadijas uzliktās stadijas migrāciju. Atbilstoši N-attiecība spētu papildināt esošo TNM klasifikācijas sistēmu tādējādi būtu iespējams samazināt nepareizas stadijas uzlikšanu. Darba mērķis: Izpētīt limfmezglu attiecības ietekmi uz izdzīvotību pacientiem ar kuņģa vēzi pēc gastrektomijām ar paplašinātām limfadenektomijām. Darba uzdevumi: Iepazīties ar jaunāko literatūtu, ievākt pacientu datus no 2014 - 2015 gada, apkopot klīniski-patoloģiskos faktorus veikt šo faktoru analīzi un veikt secinājumus. Rezultāti: Pētījums rāda, ka N-attiecības un pN rādītāja 5 gadu izdzīvotība ir līdzvērtīga. Tika konstatēts, ka N-attiecība ir progno…
Piecewise Affine (PWA) Modeling and Switched Damping Control of Two-Inertia Systems with Backlash
2018
Backlash degrades positioning accuracy and can induce mechanical wear and breakage by collisions. Therefore, a lot of studies have been conducted on backlash compensation. The simplest control method for the impact attenuation is torsional damping addition by feedback of torsional velocity. This paper reveals the advantages and disadvantages of the torsional damping addition. Based on the analyses, a novel switched damping control is proposed to realize the responses with smaller overshoot while attenuating the impact. The mechanical system and the proposed controller are described as piecewise affine systems for analyses. The performance of the proposed method is compared with a linear dam…
Model-Free Sliding-Mode-Based Detection and Estimation of Backlash in Drives With Single Encoder
2021
Backlash is a frequently encountered problem for various drives, especially those equipped with a single encoder onside of the controlled actuator. This brief proposes a sliding-mode differentiator-based estimation of unknown backlash size while measuring the actuator displacement only. Neither actuator nor load dynamics are explicitly known, while a principal second-order actuator behavior is assumed. We make use of the different perturbation dynamics distinctive for different backlash modes and an unbounded impulse-type perturbation at impact. The latter leads to transient loss of the sliding-mode and allows for detecting an isolated time instant of the backlash occurrence. The proposed m…
Backlash Identification in Two-Mass Systems by Delayed Relay Feedback
2019
Backlash, also known as mechanical play, is a piecewise differentiable nonlinearity which exists in several actuated systems, comprising, e.g., rack-and-pinion drives, shaft couplings, toothed gears, and other machine elements. Generally, the backlash is nested between the moving parts of a complex dynamic system, which handicaps its proper detection and identification. A classical example is the two-mass system which can approximate numerous mechanisms connected by a shaft (or link) with relatively high stiffness and backlash in series. Information about the presence and extent of the backlash is seldom exactly known and is rather conditional upon factors such as wear, fatigue and incipien…
Backlash against the procedural consensus
2020
While the politics of backlash is typically described as a reaction to policy decisions in favour of minority rights, immigration or globalisation, this essay focuses on the fact that backlash typically also involves a reaction against the procedural consensus liberal democracy is based upon. This challenge to democratic procedures and institutions may be even more dangerous in its effects than the substantial objectives of backlash. I use the composite definition of backlash suggested by Alter and Zürn to assess in how far the attacks on the institutions of liberal democracy have retrograde objectives in themselves or in how far they are merely instrumental to the pursuit of other retrogr…
The effectiveness of influenza vaccination in preventing hospitalisations of elderly individuals in two influenza seasons: a multicentre case-control…
2017
Influenza vaccination may limit the impact of influenza in the community. The aim of this study was to assess the effectiveness of influenza vaccination in preventing hospitalisation in individuals aged ≥ 65 years in Spain. A multicentre case–control study was conducted in 20 Spanish hospitals during 2013/14 and 2014/15. Patients aged ≥ 65 years who were hospitalised with laboratory-confirmed influenza were matched with controls according to sex, age and date of hospitalisation. Adjusted vaccine effectiveness (VE) was calculated by multivariate conditional logistic regression. A total of 728 cases and 1,826 matched controls were included in the study. Overall VE was 36% (95% confidence inte…
Parasites in the changing world – Ten timely examples from the Nordic-Baltic region
2020
Publisher's version (útgefin grein)
Cosavirus, Salivirus and Bufavirus in Diarrheal Tunisian Infants
2016
International audience; Three newly discovered viruses have been recently described in diarrheal patients: Cosa-virus (CosV) and Salivirus (SalV), two picornaviruses, and Bufavirus (BuV), a parvovirus. The detection rate and the role of these viruses remain to be established in acute gastroen-teritis (AGE) in diarrheal Tunisian infants. From October 2010 through March 2012, stool samples were collected from 203 children <5 years-old suffering from AGE and attending the Children's Hospital in Monastir, Tunisia. All samples were screened for CosV, SalV and BuV as well as for norovirus (NoV) and group A rotavirus (RVA) by molecular biology. Positive samples for the three screened viruses were …
1. - 3. klašu skolēnu sociālo kompetenču veidošanās
2018
Elīnas Freibergas maģistra darbam „1. – 3. klašu skolēnu sociālo kompetenču veidošanās.” Maģistra darba mērķis – izpētīt 1. – 3. klašu skolēnu sociālo kompetenču veidošanos un tās veicināšanas iespējas. Teorētiskajā daļā aprakstīts kompetenču jēdziens, analizējot sociālās kompetences un to specifiku sākumskolā. Pētījums veikts Rīgas X vidusskolā par 1. – 3. klašu skolēnu sociālo kompetenču veidošanos, kurā tika izmantotas tādas pētījuma metodes kā anketēšana, novērošana, fokusgrupas intervēšana un ekspertatzinuma metode. Tajā piedalījās Rīgas X vidusskolas 1. – 3. klašu skolēni, viņu vecāki, sākumskolas pedagogi un skolas administrācija. Pētījumā secināts, ka sociālās kompetences skolēniem …