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Latvijas Vēstures Institūta Žurnāls. 2012, Nr. 2 (83)

2012

Valsts pētījuma programma "Nacionālā identitāte: valoda, Latvijas vēsture, kultūra un cilvēkdrošība"

Aspazijas personības un daiļrades apguve 11. klasē

2019

Diplomdarba „Aspazijas personības un daiļrades apguve 11. klasē” mērķis ir izveidot metodiskās sistēmas variantu, kas veicinātu skolēnu interesi par literatūru un rosinātu pētīt Aspazijas daiļradē rodamās idejas. Darbam ir piecas nodaļas ar apakšnodaļām, ievads, secinājumi un pielikumi. Pirmajā nodaļā iepazīta Aspazijas personība un tās ietekme uz dzejnieces daiļradi, kā arī Aspazijas dzejas un drāmas specifika, uzsverot skolēniem noderīgo informāciju. Otrajā nodaļā ir apzināta teorētiskā literatūra par literatūru kā mācību priekšmetu un tā specifiku. Trešajā nodaļā ir aprakstīta skolotāja sagatavošanās darbam klasē, iekļaujot skolēnu vecumposma īpatnības, pētījumā iesaistīto skolēnu rakstu…

BADIOLA, Txomin; MARTÍNEZ SUÁREZ, David. Oteiza. "Catálogo razonado de escultura". OTEIZA, Jorge. "Ejercicios espirituales en un túnel. En busca y en…

2016

The influence of decision-making in tree ring-based climate reconstructions.

2021

Tree-ring chronologies underpin the majority of annually-resolved reconstructions of Common Era climate. However, they are derived using different datasets and techniques, the ramifications of which have hitherto been little explored. Here, we report the results of a double-blind experiment that yielded 15 Northern Hemisphere summer temperature reconstructions from a common network of regional tree-ring width datasets. Taken together as an ensemble, the Common Era reconstruction mean correlates with instrumental temperatures from 1794–2016 CE at 0.79 (p < 0.001), reveals summer cooling in the years following large volcanic eruptions, and exhibits strong warming since the 1980s. Differing in…

Cave bear occupation in Schwabenreith Cave, Austria, during the early last glacial: constraints from 230 Th/U‐dated speleothems

2019

The cave bear was a prominent member of the Upper Pleistocene fauna in Eurasia. While breakthroughs were recently achieved with respect to its phylogeny using ancient DNA techniques, it is still challenging to date cave bear fossils beyond the radiocarbon age range. Without an accurate and precise chronological framework, however, key questions regarding the palaeoecology cannot be addressed, such as the extent to which large climate swings during the last glacial affected the habitat and possibly even conditioned the final extinction of this mammal. Key to constraining the age of cave bear fossils older than the lower limit of radiocarbon dating is to date interlayered speleothems using 23…

NightShift: NMR shift inference by general hybrid model training - a framework for NMR chemical shift prediction

2013

Statistics-preserving bijections between classical and cyclic permutations

2012

Recently, Elizalde (2011) [2] has presented a bijection between the set C"n"+"1 of cyclic permutations on {1,2,...,n+1} and the set of permutations on {1,2,...,n} that preserves the descent set of the first n entries and the set of weak excedances. In this paper, we construct a bijection from C"n"+"1 to S"n that preserves the weak excedance set and that transfers quasi-fixed points into fixed points and left-to-right maxima into themselves. This induces a bijection from the set D"n of derangements to the set C"n"+"1^q of cycles without quasi-fixed points that preserves the weak excedance set. Moreover, we exhibit a kind of discrete continuity between C"n"+"1 and S"n that preserves at each s…

Dynamic Consensus: Increasing Blockchain Adaptability to Enterprise Applications

2020

Decentralization powered by blockchain is validated for its capability to build trust like no other computational system before. The evolution of blockchain models has opened new use-cases that are becoming operational in many industry fields such as: energy, healthcare, banking, cross-border trade, aerospace, supply chain, and others. The core component of a decentralized architecture is the consensus algorithm - the set of rules that ensures an automated and fair agreement between the actors in the same network. Classic consensus algorithms are tailored to solve specific problems, but in an open ecosystem, each business case is unique and needs a certain level of customization. This paper…

An insulating doped antiferromagnet with low magnetic symmetry as a room temperature spin conduit

2020

We report room temperature long-distance spin transport of magnons in antiferromagnetic thin film hematite doped with Zn. The additional dopants significantly alter the magnetic anisotropies, resulting in a complex equilibrium spin structure that is capable of efficiently transporting spin angular momentum at room temperature without the need for a well-defined, pure easy-axis or easy-plane anisotropy. We find intrinsic magnon spin-diffusion lengths of up to 1.5 {\mu}m, and magnetic domain governed decay lengths of 175 nm for the low frequency magnons, through electrical transport measurements demonstrating that the introduction of non-magnetic dopants does not strongly reduce the transport…

Early detection and classification of bearing faults using support vector machine algorithm

2017

Bearings are one of the most critical elements in rotating machinery systems. Bearing faults are the main reason for failures in electrical motors and generators. Therefore, early bearing fault detection is very important to prevent critical system failures in the industry. In this paper, the support vector machine algorithm is used for early detection and classification of bearing faults. Both time and frequency domain features are used for training the support vector machine learning algorithm. The trained classier can be employed for real-time bearing fault detection and classification. By using the proposed method, the bearing faults can be detected at early stages, and the machine oper…