Sökning: "modes of translation"

Visar resultat 21 - 25 av 26 avhandlingar innehållade orden modes of translation.

1. 21. Twist-Symmetric Periodic Structures : Properties and Applications

   Författare :Oskar Zetterström; Oscar Quevedo-Teruel; Martin Norgren; Nelson Fonseca; Jorge Ruiz-Cruz; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : In this thesis, periodic structures with higher symmetries symmetries are discussed. The main focus of the thesis is on twist symmetries. Importantly, the attractive properties of twist symmetries for the control of electromagnetic wave propagation are demonstrated. LÄS MER

3. 22. The Multimodal Transfer Matrix Method : And its application to higher-symmetric periodic structures

   Författare :Pilar Castillo-Tapia; Oscar Quevedo-Teruel; Paolo Bacarelli; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : This thesis focuses on the understanding and computation of the dispersion properties of periodic structures possessing higher symmetries with the multimodal transfer matrix method (MMTMM). Periodic structures with higher symmetries are invariant after additional symmetry operations over the translation operation. LÄS MER

4. 23. Periodic Structures with Higher Symmetries: Analysis and Applications

   Författare :Fatemeh Ghasemifard; Martin Norgren; Oscar Quevedo-Teruel; Guido Valerio; Stefano Maci; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; periodic structures; higher symmetries; dispersion analysis; mode matching; generalized Floquet theorem; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : In this thesis, periodic structures with higher symmetries are studied. Their wave propagation characteristics are investigated and their potential applications are discussed. Higher-symmetric periodic structures are described with an additional geometrical operation beyond a translation operator. LÄS MER

5. 24. Form & Formlessness : Questioning aesthetic abstractions through art projects, cross-disciplinary studies and product design education

   Författare :Cheryl Akner Koler; Edith Ackermann; Konstfack; []
   Nyckelord :HUMANIORA; HUMANITIES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aesthetics; Abstractions; Form; Design; Formgiving; Formlessness; Gestalt; Complexity; cross-disciplinary; Design; Design; Konst; Arts; Designdriven och gestaltande kunskapsproduktion; Designdriven och gestaltande kunskapsproduktion; Sensorium; rumsliga perceptioner; Sensorium; rumsliga perceptioner; Materiella kulturer; Materiella kulturer;

   Sammanfattning : This research is based on empirical, embodied studies aimed to generate and regenerate aesthetic reasoning through three approaches:an educational approach concerned with developing an aesthetic discipline, supporting a formgiving process aimed to create tangible artifacts.an art-based approach supporting an open exploration of distortion and formlessnessa multi-disciplinary exploratory approach concerned with aesthetic experiences shared in laborations demonstrating complexity and transformation. LÄS MER

7. 25. MINISTOP 2.0 : a smartphone app integrated in primary child health care to promote healthy diet and physical activity behaviors and prevent obesity in preschool-aged children

   Författare :Christina Alexandrou; Marie Löf; Hanna Henriksson; Ulrika Müssener; Nina Cecilie Øverby; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MHealth; Primary child health care; Early prevention; Preschool; Diet; Physical activity; Childhood overweight and obesity; Smartphone app; Randomized controlled trial;

   Sammanfattning : BackgroundChildhood overweight and obesity is currently estimated to affect 39 million children under the age of five worldwide. After the COVID-19 pandemic, further increases have been observed in several countries including Sweden, where an increased incidence was observed in 3- and 4-year-old children, especially in disadvantaged areas. LÄS MER