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Din sökning på "polarization of sound" gav 704 sökträffar

“Not a Sight, but a Sound” : Listening in E. M. Forster’s A Passage to India

This article examines what happens when we listen to E. M. Forster’s A Passage to India (1924), suggesting that sound has several important functions in the novel, which relate both to the conflicts between the different cultural groupings and to the existential questions that underpin the plot. In making a distinction both between eye and ear, and then between hearing and listening, the article a

Honeybee navigation: critically examining the role of the polarization compass

Although it is widely accepted that honeybees use the polarized-light pattern of the sky as a compass for navigation, there is little direct evidence that this information is actually sensed during flight. Here, we ask whether flying bees can obtain compass cues derived purely from polarized light, and communicate this information to their nest-mates through the 'waggle dance'. Bees, from an obser

Sound propagation over inhomogeneous ground including a sound velocity profile

The atmospheric profile whose sound speed varies linearly with height is simple in concept, but leads to complications when solving for the sound pressure. Its effects are commonly approximated by a similar profile whose squared refractive index is a linear function of height. In this paper, the validity of the approximation has been examined for sound propagation above an impedance ground and a c

Challenges and some new directions in channel coding

Three areas of ongoing research in channel coding are surveyed, and recent developments are presented in each area: spatially coupled Low-Density Parity-Check (LDPC) codes, non-binary LDPC codes, and polar coding.

Two-photon excitation in fluorescence polarization receptor-ligand binding assay

Fluorescence polarization is one of the most commonly used homogeneous assay principles in drug discovery for screening of potential lead compounds. In this article, the fluorescence polarization technique is combined with 2-photon excitation of fluorescence. Theoretically, the use of 2-photon excitation of fluorescence increases the volumetric sensitivity and polarization contrast of fluorescence

An unexpected advantage of whiteness in horses: the most horsefly-proof horse has a depolarizing white coat

White horses frequently suffer from malign skin cancer and visual deficiencies owing to their high sensitivity to the ultraviolet solar radiation. Furthermore, in the wild, white horses suffer a larger predation risk than dark individuals because they can more easily be detected. In spite of their greater vulnerability, white horses have been highly appreciated for centuries owing to their natural

Beyond Additivity : A mixture of glucose and NaCl can influence skin hydration more than the individual compounds

The barrier function of the skin mainly relies on its outermost layer, the stratum corneum (SC), which is a lipid-protein composite biomaterial. In addition, SC contains a mixture of small polar compounds, the natural moisturizing factor (NMF). Most of the NMF components are solid at ambient relative humidities (RHs). We herein raise the question of what the effects of adding a mixture of chemical

Polarization effects in Raman spectroscopy of light-absorbing carbon

Raman spectroscopy is widely used for characterization of carbon-based mate- rials including light-absorbing carbonaceous (LAC) matter. However, informa- tion on polarization properties of these materials are generally lacking, and often the polarization characteristics of experiments are not presented in the literature thereby giving uncertainty to presented data. In this work, the polari- zation

Modular Polarization-Engineered Optical Phased Arrays for Optical Wireless Indoor Networks

The growing passion for indoor optical wireless networks reflects their immense capability to deliver consistent high-quality data connectivity across diverse indoor environments. This study examines how polarization can be engineered to enhance near-field beam focusing in optical wireless indoor networks using a modular clustered optical phased array aperture. The aperture follows a ceiling-mount

Impact of SM parameters and of the vacua of the Higgs potential in gravitational waves detection

In this work we discuss two different phases of a complex singlet extension of the Standard Model (SM) together with an extension that also includes new fermion fields, in particular, a Majoron model equipped with an inverse seesaw mechanism. All considered scenarios contain a global U(1) symmetry and allow for first-order phase transitions while only two of them are strong enough to favour the de

Multidisciplinary monitoring of an in-situ remediation test of chlorinated solvents

Pollutions on and within the underground poses risks for groundwater contamination and is a widespread global problem. Common remediation methods based on digging and removal can be expensive and have limitations, while in-situ remediation is an attractive alternative. However, there is a need to develop tools to monitor the effectiveness both in terms of the successful injection of remediation fl

Sound of democracy : Towards the democratisation of standards for soundscapes​

With this audio paper, our aim is to explore the connection between sound and democracy. Recognizing the multifaceted nature of this field, we approach it through the notion of care and an empirical analysis of the democratic implications of trying to regulate sound in public spaces. We examine ISO standards as one example of the many attempts to control sound in both public and private spaces. St

Observations on speech characteristics associated with childhood apraxia of speech in a dynamic motor speech assessment

Bedömning av ett barns talsvårigheter behöver baseras på flera uppgifter och testmetoder för att möjliggöra identifiering av den eller de talproduktionsnivåer som är inblandade. Syftet med studien var att undersöka hur ett benämningstest och ett dynamiskt motoriskt taltest bidrog till observationer av talbeteenden förenliga med brister i talmotorisk planering. Deltagarna var 28 barn mellan tre ochThe assessment of a child’s speech problem should incorporate several tasks and sampling methods to identify the difficulties appointing the speech production level/s involved. This study aimed to investigate how a dynamic motor speech test contributed to a naming test in observing speech characteristics consistent with deficits of speech motor planning. Participants were 28 children, 3 to 9 years

Visualization and understanding of combustion processes using spatially and temporally resolved laser diagnostic techniques

Laser diagnostic techniques have for more than 30 years added very valuable input for a deepened understanding of combustion processes. The present paper will focus on techniques developed for visualization of important parameters with the ability to get detailed information in space and time. The paper is not meant to be a complete review of the entire research field but rather a survey with a ma

Towards Comprehensive Protection of the Marine Environment: Testing the Boundaries of the MARPOL and BASEL Regimes

This thesis discusses the potential conflicts between the MARPOL and BASEL regimes in relation with management of wastes derived from operations of ships. The analysis whether the BASEL Convention provides an overarching regime to deal with waste cycle from generation to disposal is also addressed for determining if MARPOL has to complement this regime. To this end, a holistic view regarding the e

Perspectives on soundscapes : Verb constructions in descriptions of everyday sounds

This study explores how listeners use verb constructions to describe everyday sounds. It considers (i) how the verb constructions provide Gestalt to events in the form of activities, processes and states, and (ii) how the constructions correspond to different aspects of a soundscape (sound sources, acoustic properties, and listener reactions). We found that verb constructions primarily describe so

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Dnr: STYR 2019/878 LUNDS UNIVERSITET PROTOKOLL Sammanträde 16 maj 2019 kl. 9.15 - 10.35 Sal B538 Filosofiska institutionen I nstitutionsstyrelsen Närvarande: Ledamöter: Mattias Gunnemyr Jana Holsanova Tobias Hansson Wahlberg Erik Olsson Tomas Persson Björn Petersson Toni Rennow-Rasmussen Saber Malmberg Samuel Carlsson Eva Sjöstrand Matthew Tallbert studerande, forskarutbildning suppleant, lärare,

https://www.fil.lu.se/fileadmin/user_upload/fil/dokument/Protokoll_styrelsemoete/2019/Protokoll_190516.pdf - 2026-06-15