Essays about: "first wave"

Showing result 1 - 5 of 274 essays containing the words first wave.

  1. 1. Quantum Optical Description of High-order Harmonic Generation

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Isabel Moreno; [2024]
    Keywords : Physics and Astronomy;

    Abstract : High-order Harmonic Generation (HHG) is a highly non-linear process in which an atom interacts with a strong laser field. The laser field lowers the atomic potential barrier allowing bound electrons to escape into the continuum through tunnel ionization, propagate, and, with some probability, recombine with the parent ion. READ MORE

  3. 2. Effectiveness of Iterative Algorithms for Recovering Phase in the Presence of Noise for Coherent Diffractive Imaging

    University essay from Göteborgs universitet / Institutionen för fysik

    Author : Henry Wittler; [2023-11-29]
    Keywords : ;

    Abstract : Methods of coherent diffractive imaging (CDI) rely on iterative algorithms to reconstruct the complex exit-surface wave (ESW) of the object being imaged from the measured diffraction intensity only. In this thesis we investigate by simulation the artifacts on reconstruction when noise are present in the measurement. READ MORE

  4. 3. Confident in my class: A secondary data study of maths motivation and students’ sociodemographic factors in grade three and four in Sweden.

    University essay from Göteborgs universitet/Institutionen för pedagogik och specialpedagogik

    Author : Karin Johansson; [2023-10-31]
    Keywords : gender; ethnicity; SES; Mathematics Achievement; Maths Motivation;

    Abstract : Aim: This thesis aims to point to how motivation as well as achievement in maths and students’ sociodemographic factors can correlate for grade three and four in Swedish schools. Theory: The two theories used in the thesis are Expectancy-value Theory by Eccles and Cultural Capital by Bourdieu. READ MORE

  5. 4. The impact of "loose " restrictions in Sweden during the COVID-19 virus , compared to the neighbouring Scandinavian countries.

    University essay from Lunds universitet/Matematisk statistik

    Author : Anie Kdlian; [2023]
    Keywords : Covid-19; Corona virus pandemic; Sweden; Scandinavian countries; Coronavirus; coronaviruspandemin; skandinaviskaländer; Sverige; Data Analysis; Dataanalys; Denmark; Finland; Norway; variants; excess mortality; vaccination; waves of covid; covid cases; stringency index; first wave; second wave; third wave; fourth wave; milda restriktioner.; Mathematics and Statistics;

    Abstract : Covid-19 is the first type of coronavirus that was characterized as a pandemic, year 2020. The prevention methods to minimize the spread of the corona virus did vary somehow between the countries. READ MORE

  6. 5. Comparison of psychedelic therapies versus placebo in the treatment of psychiatric illnesses: a systematic review of randomized trials including placebo controls

    University essay from Lunds universitet/Institutionen för psykologi

    Author : Aleksandra Barbara Barstowe; [2023]
    Keywords : psychedelic-assisted therapy; placebo; psychiatric illness; psykedelisk-assisterad terapi; psykiatrisk sjukdom; Social Sciences; Medicine and Health Sciences;

    Abstract : Psychedelics have long been recognized for their powerful effects on the human psyche and psychedelic-assisted therapy is becoming increasingly acknowledged as an effective therapeutic intervention. Placebos are used in clinical research to validate the efficacy of a therapy or treatment. READ MORE