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Įvadas

Vykintas Vaitkevičius

https://doi.org/10.15181/ahuk.v40i0.2128

Pub. online: 15 Jun 2020 Type: Introduction

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 40 (2020): The Anti-Soviet Resistance: New Approaches to the Lithuanian Partisan War = Antisovietinė rezistencija Lietuvoje: partizaninio karo tyrimų naujos prieigos, pp. 15–21

Introduction

Vykintas Vaitkevičius

https://doi.org/10.15181/ahuk.v40i0.2127

Pub. online: 15 Jun 2020 Type: Introduction

Open Access

Editor’s note | Redaktoriaus žodis

Vasilijus Safronovas

Pub. online: 15 Jun 2020 Type: Editorial Note

Open Access

A One-Particle Generalized Coefficients of Fractional Parentage Calculation Method for Atomic Nucleus Harmonic Oscillator Shell Model

Algirdas Deveikis

https://doi.org/10.15181/csat.v7i0.1763

Pub. online: 16 Apr 2020 Type: Article

Open Access

Journal: Computational Science and Techniques Volume 7 (2020), pp. 592–604

Abstract

A method for the calculation of the one-particle generalized coefficients of fractional parentage for an arbitrary number of j-orbits with isospin and an arbitrary number of oscillator quanta (generalized CFPs or GCFPs) is presented. The approach is based on a simple enumeration scheme for antisymmetric many-particle states, an efficient algorithm for the calculation of the CFPs for a single j-orbit with isospin, and a general procedure for the computation of the angular momentum (isospin) coupling coefficients describing the transformation between different momentum-coupling schemes. The method provides fast calculation of GCFPs for a given particle number and produces results possessing small numerical uncertainties. The introduced GCFPs make it feasible calculation of expectation values of one-particle nuclear shell-model operators within the isospin formalism.

New Bayesian Method for Multiextremal Optimization

Natalija Pozniak Leonidas Sakalauskas

https://doi.org/10.15181/csat.v7i0.1956

Pub. online: 23 Jan 2020 Type: Article

Open Access

Journal: Computational Science and Techniques Volume 7 (2020), pp. 581–591

Abstract

This paper is focused on the Bayes approach to multiextremal optimization problems, based on modelling the objective function by Gaussian random field (GRF) and using the Euclidean distance matrices with fractional degrees for presenting GRF covariances. A recursive optimization algorithm has been developed aimed at maximizing the expected improvement of the objective function at each step, using the results of the optimization steps already performed. Conditional mean and conditional variance expressions, derived by modelling GRF with covariances expressed by fractional Euclidean distance matrices, are used to calculate the expected improvement in the objective function. The efficiency of the developed algorithm was investigated by computer modelling, solving the test tasks, and comparing the developed algorithm with the known heuristic multi-extremal optimization algorithms.

Nauja knyga Lietuvos šaulių sąjungos šimtmečiui istoriografijos kontekste | Rec. kn.: NEFAS, Mindaugas. Dvasios aristokratai: Lietuvos šaulių sąjungos siekiai ir realybė 1919–1940 m. Vilnius: Versus, 2019. – 495 p. ISBN 978-9955-829-22-5

Vytautas Jokubauskas

https://doi.org/10.15181/ahuk.v38i0.2085

Pub. online: 18 Dec 2019 Type: Book Review

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 38 (2019): Creating Modern Nation-States in the Eastern Baltic = Šiuolaikinių tautinių valstybių kūrimas rytiniame Baltijos jūros regione, pp. 243–253

Ne „pertirti“, bet permąstyti: pastabos Vytauto Jokubausko knygos paraštėse | Rec. kn.: JOKUBAUSKAS, Vytautas. Netiesioginis poveikis ir Lietuvos karinis saugumas 1919–1940 m. Klaipėda, 2019. – 368 p. ISBN 978-609-404-277-5

Manvydas Vitkūnas

https://doi.org/10.15181/ahuk.v38i0.2084

Pub. online: 18 Dec 2019 Type: Book Review

Open Access

Atneštiniai herbai Žemaitijos bajorų heraldikos tradicijoje XVI–XVIII amžiais | ‘Imported’ Coats of Arms in the Heraldic Tradition of the Žemaitijan Nobility of the 16th to 18th Centuries

Gabrielė Jasiūnienė

https://doi.org/10.15181/ahuk.v39i0.2123

Pub. online: 18 Dec 2019 Type: Article

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 39 (2019): The Unknown Land of Žemaitija: The 13th to the 18th Centuries = Žemaitija – nežinoma žemė: XIII–XVIII amžiai, pp. 219–233

Abstract

The Žemaitijan nobility of the 15th to the 18th centuries included several heraldic groups: a group of local origin; Polish coats of arms; personalised Polish coats of arms; and coats of arms that were imported/adopted from other countries. This article focuses on the second and fourth groups, which include coats of arms that could be described as ‘imported’, ‘foreign’ or ‘alien’. The article aims to discuss the prevalence and use of these coats of arms in the heraldic tradition of the Žemaitijan nobility of the 16th to the 18th centuries. The adoption of Polish heraldry was already evident in the first half of the 16th century. The Horodło coats of arms entered the heraldry of the Žemaitijan nobility. Also, Polish coats of arms were brought to the country by Polish noble families. The number of those who came to Žemaitija from Germanspeaking lands was very small, and this meant that their heraldic sources were not abundant. On the other hand, surviving heraldic sources indicate that these newcomer families usually only used their own coats of arms.

Vietos bendruomenės ir valdžios komunikacijos problemos XVII a. antrojoje pusėje (pagal Šiaulių ekonomijos pavyzdį) | Communication Problems between the Local Community and the Government in the Second Half of the 17th Century …

Rita Regina Trimonienė

https://doi.org/10.15181/ahuk.v39i0.2122

Pub. online: 18 Dec 2019 Type: Article

Open Access

Abstract

In 1589, the Sejm of the Commonwealth of the Two Nations established the royal holdings (Crown lands), called Economijas, of Šiauliai, Hrodna, Alytus, Brest, Kobrin and Mahilioŭ in the Grand Duchy of Lithuania. However, Šiauliai started to function as a royal Economija only in 1619. At this time, it was the largest and richest royal holding in the grand duchy. The article deals with the relatively closed community of the Šiauliai Economija in the second half of the 17th century. Its unusual administrative system, with its relatively abundant community records, makes it possible to trace and discuss the following issues: how the local government had functioned and how it maintained relations with the community; how the local community and individual members used and dealt with decisions by the Lithuanian central government; what rules of communication applied between different actors, the Lithuanian central government, the Šiauliai Economija government, and the local community.

Vokietijos pavojus ir karo dviem frontais katastrofa (Lietuvos kariuomenės 1936–1937 m. operacijų planai nr. 1 „V“ ir nr. 2 „V+L“) | The German Threat and the Catastrophe of the War on Two Fronts: The Lithuanian Army’s Operational Plans…

Vytautas Jokubauskas

Samanta Zuberniūtė

https://doi.org/10.15181/ahuk.v38i0.2083

Pub. online: 18 Dec 2019 Type: Source Publication

Open Access

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