432 research outputs found
QCD Scales and Chiral Symmetry in Finite Nuclei
We report on our progress in the calculation of nuclear ground-state
properties using effective Lagrangians whose construction is constrained by QCD
scales and chiral symmetry. Good evidence is found that QCD and chiral symmetry
apply to finite nuclei.Comment: Presentation at the International Conference on Nuclear Data for
Science and Technology, Trieste, Italy, May 19-24, 1997. LaTeX file (7 pages,
4 tables). To be published in the Conference Series of the Italian Physical
Societ
Total Prompt Energy Release in the Neutron-Induced Fission of 235-U, 238-U, and 239-Pu
This study addresses, for the first time, the total prompt energy release and
its components for the fission of 235-U, 238-U, and 239-Pu as a function of the
kinetic energy of the neutron inducing the fission. The components are
extracted from experimental measurements, where they exist, together with
model-dependent calculation, interpolation, and extrapolation. While the
components display clear dependencies upon the incident neutron energy, their
sums display only weak, yet definite, energy dependencies. Also addressed is
the total prompt energy deposition in fission for the same three systems.
Results are presented in equation form. New measurements are recommended as a
consequence of this study.Comment: Accepted for publication in Nuclear Physics
A nucleonic NJL model for finite nuclei: dynamic mass generation and ground-state observables
We test the compatibility of chiral symmetry, dynamic mass generation of the
nucleon due to spontaneous breaking of chiral symmetry, and the description of
finite nuclear systems by employing an NJL model understood as a chiral
invariant effective theory for nucleons. We apply the model to nuclear matter
as well as to finite nuclei. In the latter case, the model is adjusted to
nuclear ground-state observables. We treat the case of a pure chiral theory and
the physically more realistic case where a portion of the nucleon mass (160
MeV) explicitly breaks chiral symmetry. The best version of this current model
is found to deliver reasonably good results simultaneously for both finite
nuclei and the nucleon mass, which supports our motivation of probing a link
between low-momentum QCD and the nuclear many-body problem. However, the
observables calculated for finite nuclei are not as good as those coming from
existing relativistic mean field models without explicit chiral symmetry.Comment: 19 pages, 3 eps figures, accepted for publication in Nucl. Phys.
Paranoia
For people who want to play elimination-based live-action games, the Paranoia App is a mobile application that uses the Elimination Framework to host, join, and play in elimination-based games as well as updated their profile and view stats. Using image recognition, players will snap pictures of their targets which will be sent to the Elimination Framework for verification and new target assignment. Unlike current methods of playing elimination-based live-action games, Paranoia will remove the subjectivity that comes from a human moderator and human players determining a successful elimination as well as the need to carry around projectiles or physically tag your target
Paranoia
For people who want to play elimination-based live-action games, the Paranoia App is a mobile application that uses the Elimination Framework to host, join, and play in elimination-based games as well as updated their profile and view stats. Using image recognition, players will snap pictures of their targets which will be sent to the Elimination Framework for verification and new target assignment. Unlike current methods of playing elimination-based live-action games, Paranoia will remove the subjectivity that comes from a human moderator and human players determining a successful elimination as well as the need to carry around projectiles or physically tag your target
The Wonderful World of Accents: Accent Use in Disneyâs Animated Television Series 1985-2020
Denne oppgaven har hatt som formĂ„l Ă„ se pĂ„ bruken av engelske uttalevarianter (âaccentsâ) i animerte tv-serier fra Disney, utgitt mellom 1985 og 2020. Totalt har 490 karakterer fra 14 ulike serier blitt analysert og kategorisert for Ă„ undersĂžke hvorvidt det finnes systematiske korrelasjoner mellom bestemte karaktertrekk og spesifikke uttalevarianter. I tillegg har et viktig mĂ„l for oppgaven vĂŠrt Ă„ avdekke potensielle diakroniske endringer mellom de gamle og de nye tv-seriene, og om dette eventuelt kan knyttes til endringer og utvikling i samfunnet. Et grunnleggende premiss for oppgaven er at sprĂ„kbruk i media reflekterer sprĂ„kholdninger og stereotypiske oppfatninger som eksisterer i samfunnet. Tidligere forskning pĂ„ sprĂ„kholdninger har vist at folk typisk assosierer ulike varianter av engelsk med spesifikke personlige egenskaper og sosiale bakgrunner. Det Ă„ bruke ulike uttalevarianter i film og tv-serier kan dermed vĂŠre et effektivt virkemiddel for bygge karakterer. Resultatene fra denne oppgaven blir sammenlignet med funn fra tidligere studier som har sett pĂ„ bruk av engelske uttalevarianter i film og tv. Noen av studiene har fokusert pĂ„ tv-serier rettet mot enten barn eller mot et litt eldre publikum. Andre har sett pĂ„ ulike typer filmer, f.eks. fantasy-filmer, filmer i Harry Potter-serien eller filmer fra Disney. Samtlige studier har funnet systematiske sammenhenger mellom ulike karaktertrekk og varianter av engelsk, og det er disse korrelasjonene som har dannet grunnlaget for hypotesene i denne oppgaven. I forhold til de underliggende hypotesene var det forventet Ă„ finne systematiske sammenhenger mellom uttalevarianter og karaktertrekk, som alder, kjĂžnn, karakterrolle i serien, om karakterene var onde eller gode, om de var sympatiske eller ikke, om de var mennesker eller ikke, samt hvor sofistikerte de var. Forventingen var ogsĂ„ Ă„ finne forskjeller mellom de gamle og de nyere seriene. Siden samfunnet har utviklet seg mye over de siste tiĂ„rene, var forventningen Ă„ finne mer stereotypisk sprĂ„kbruk i de gamle seriene, og mindre av dette i de nye seriene. Resultatene viser at det er korrelasjoner mellom uttalevarianter og karaktertrekk i Disneys tv-serier, men at noen endringer har skjedd over de siste Ă„rene. Den meste brukte uttalevarianten i alle seriene var standard amerikansk, og andelen karakterer som snakket denne varianten av engelsk var enda stĂžrre i de nye enn i de gamle seriene. I analysen av sprĂ„kbruk i seriene ble det funnet forskjeller mellom barn og voksne, kvinner og menn, gode og onde, sympatiske og usympatiske, mennesker og ikke-mennesker, sofistikerte og usofistikerte. Selv om forskjellene er mindre i de nye seriene, viser resultatene i denne oppgaven at det fremdeles finnes stereotypisk sprĂ„kbruk i Disneys animerte tv-serier.Engelsk mastergradsoppgaveENG350MAHF-ENGMAHF-LĂF
Calculating the Fierz Transformation for Higher Orders
We consider the higher-order Fierz transformation, which corresponds to
expanding a product of terms into a sum of products of
Dirac densities and currents. It is shown that the Fierz transformation can be
obtained by solving a large system of linear equations with fractional complex
coefficients, which is practical at least up to fourth power.Comment: 6 pages, 3 table
- âŠ