Search results for "init"
showing 10 items of 6629 documents
Asignatura química computacional: sesiones prácticas en inglés
2020
El document forma part dels materials docents programats mitjançant l'ajut del Servei de Política Lingüística (SPL) de la Universitat de València. Ens agradaria agrair expressament el suport del SPL per incentivar la elaboració de material docent en altres llengües. En este documento hemos incluido todas las sesiones prácticas que se imparten en la asignatura de química computacional, optativa de cuarto curso dentro del grado de químicas. Esta asignatura consta de una parte teórica y después sesiones prácticas donde se realizan ejercicios correspondientes a la parte conceptual estudiada. En este documento se expone el material necesario para las sesiones prácticas referente a los temas: quí…
Asignatura química computacional: seminarios de teoría en inglés
2020
El document forma part dels materials docents programats mitjançant l'ajut del Servei de Política Lingüística (SPL) de la Universitat de València. En este documento hemos incluído todos los seminarios teóricos que se imparten en la asignatura de química computacional, optativa de cuarto curso dentro del grado de químicas. Esta asignatura consta de una parte teórica y después sesiones prácticas donde se realizan ejercicios correspondientes a la parte conceptual estudiada. En este documento se expone el material teórico impartido: química computacional, métodos ab-initio, métodos basados en el funcional de la densidad (DFT), métodos semiempíricos, métodos post-Hartree-Fock, efectos del solven…
Double role of music criticism : a model of the inner structure of the funding of music
2008
Tarkoituksena on tarkastella, kuinka musiikkikritiikki vaikuttaa musiikin rahoitukseen. Aineistoni muodostuu eri osa-alueiden teksteistä. Tutkimukseni näkökulma perustuu Bourdieu´n, Beckerin ja Maussin määrittelemään kenttään ja sen dynamiikkaan. Kentän asiantuntijaosan muodostavat koulutus, kulttuuripolitiikka, ja muusikko (imagon saajan osana). Kaiken keskiössä on kriitikko, taiteellista tasoa evaluoimassa. Näin muodostuvassa sisäpiirissä voi liikkua päätöksiin vaikuttavaa tietoa. Tämä muodostaa rahoituksen yhden haaran. Toinen haara syntyy lipputuloista. Innovaattoreitta on tutkimusten mukaan 10-15% yleisöstä (, ja sillä saattaa olla sija sisäpiireissäkin), suurin osa yleisöä seuraa inno…
Generalized wave propagation problems and discrete exterior calculus
2018
We introduce a general class of second-order boundary value problems unifying application areas such as acoustics, electromagnetism, elastodynamics, quantum mechanics, and so on, into a single framework. This also enables us to solve wave propagation problems very efficiently with a single software system. The solution method precisely follows the conservation laws in finite-dimensional systems, whereas the constitutive relations are imposed approximately. We employ discrete exterior calculus for the spatial discretization, use natural crystal structures for three-dimensional meshing, and derive a “discrete Hodge” adapted to harmonic wave. The numerical experiments indicate that the cumulat…
Strongly Coupled Coherent Phonons in Single-Layer MoS 2
2019
We present a transient absorption setup combining broadband detection over the visible-UV range with high temporal resolution ($\sim$20fs) which is ideally suited to trigger and detect vibrational coherences in different classes of materials. We generate and detect coherent phonons (CPs) in single layer (1L) MoS$_2$, as a representative semiconducting 1L-transition metal dichalcogenide (TMD), where the confined dynamical interaction between excitons and phonons is unexplored. The coherent oscillatory motion of the out-of-plane $A'_{1}$ phonons, triggered by the ultrashort laser pulses, dynamically modulates the excitonic resonances on a timescale of few tens fs. We observe an enhancement by…
Improving Scalable K-Means++
2021
Two new initialization methods for K-means clustering are proposed. Both proposals are based on applying a divide-and-conquer approach for the K-means‖ type of an initialization strategy. The second proposal also uses multiple lower-dimensional subspaces produced by the random projection method for the initialization. The proposed methods are scalable and can be run in parallel, which make them suitable for initializing large-scale problems. In the experiments, comparison of the proposed methods to the K-means++ and K-means‖ methods is conducted using an extensive set of reference and synthetic large-scale datasets. Concerning the latter, a novel high-dimensional clustering data generation …
Improvements and applications of the elements of prototype-based clustering
2018
Clustering or cluster analysis is an essential part of data mining, machine learning, and pattern recognition. The most popularly applied clustering methods are partitioning-based or prototype-based methods. Prototype-based clustering methods usually have easy implementability and good scalability. These methods, such as K-means clustering, have been used for different applications in various fields. On the other hand, prototype-based clustering methods are typically sensitive to initialization, and the selection of the number of clusters for knowledge discovery purposes is not straightforward. In the era of big data, in high-velocity, ever-growing datasets, which can also be erroneous, outl…
Crystal field and magnetism with Wannier functions: Rare-earth doped aluminum garnets
2015
Using the recently developed method we calculate the crystal field parameters in yttrium and lutetium aluminum garnets doped with seven trivalent Kramers rare-earth ions. We then insert calculated parameters into the atomic-like Hamiltonian taking into account the electron-electron, spin-orbit and Zeeman interactions and determine the multiplet splitting by the crystal field as well as magnetic $\hat{g}$ tensors. We compare calculated results with available experimental data.
Hera- ja proteiinijuomadieettien ja liikunnan vaikutukset aineenvaihduntaan ja kehonkoostumukseen rotilla
2015
Niina Karstunen (2015). Hera- ja proteiinijuomadieettien ja liikunnan vaikutukset aineenvaihduntaan ja kehonkoostumukseen rotilla. Liikuntabiologian laitos, Jyväskylän yliopisto, Liikuntafysiologian pro gradu-tutkielma, 43 s. Elimistön liiallinen rasvamassa aiheuttaa häiriöitä glukoosi- ja rasva-aineenvaihdunnassa. Proteiinipitoisella ruokavaliolla ja liikunnalla on todettu olevan suotuisia vaikutuksia kehonkoostumukseen sekä glukoosi- ja rasva-aineenvaihduntaan. Proteiineista heraproteiinilla on saavutettu parhaat tulokset tutkimuksissa, jotka koskevat lihavuudesta johtuvien sairauksien ja niiden riskitekijöiden ehkäisemistä. Tutkimuksessa tutkittiin hera- ja proteiinijuomadieettien ja lii…
Game Definitions: A Wittgensteinian Approach
2014
Games have been defined and redefined many times over, and there seems to be no end to this continual process or any agreement about the definitions. This article argues that such an agreement is not necessary, and presents a Wittgensteinian approach to discussing game definitions. Instead of the common core approach used in most definitions, this article argues for an approach based on language-games. The common core approach is based on a limited number of shared core attributes, while the language-game approach is based on the idea of family resemblances. The language-game approach sees the cycle of redefinition as a hermeneutic circle that advances our understanding of games. This artic…