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Your search for "2025" yielded 29437 hits

Kommersialisering och outsourcing av hushållsarbete : RUT-avdrag, migrantarbete och exploatering inom den svenska städindustrin

Privat städhjälp var tidigare ett marginellt fenomen på svensk arbetsmarknad. Precis som den kommersiella städningen så utfördes den framförallt av kvinnor och i synnerhet av invandrarkvinnor. Ersättningen var låg och utbetalades ofta svart och de som använde sig av privat städhjälp var i första hand välbärgade svenska familjer. För majoriteten av svenska hushåll var däremot städning och annat hus

LES of Supersonic Combustion in a Mach 2 Cavity-Based Model Scramjet Combustor with Conjugate Heat Transfer and Radiative Heat Transfer

Here we report on reactive Large Eddy Simulations (LES) of flow and combustion in the US Air Force Research Laboratory Research Cell 19 cavity-based scramjet combustor. This case involves combustion of ethylene (C2H4) injected into a cavity from its slanted trailing edge. It has previously been studied experimentally with multiple techniques including particle image velocimetry, shadowgrapy, OH pl

Experiments and Large Eddy Simulation of Supersonic Combustion in the Small-Scale Flight Experiment

Supersonic combustion is a critical area of research for advancing high-speed flight technologies, particularly for the development of scramjet engines for hypersonic vehicles. This study employs Finite Rate Chemistry (FRC) Large Eddy Simulation (LES) together with different experimental techniques to study the supersonic flow and thermochemical processes in the Small Scale Flight Experiment (SSFE

Improving neural network efficiency with multifidelity and dimensionality reduction techniques

Design problems in aerospace engineering often require numerous evaluations of expensive-to-evaluate high-fidelity models, resulting in prohibitive computational costs. One way to address the computational cost is through building surrogates, such as deep neural networks (DNNs). However, DNNs may only be an effective surrogate when sufficient evaluations of the high-fidelity model are required suc

IEA SHC Task 70 / EBC Annex 90 “Low Carbon, High Comfort Integrated Lighting” -Updates of Subtask D

Achieving the dual goals of increasing visual comfort and well-being in the built environment while minimizing resource demand is a significant challenge. Since 2023, Subtask D “Case Studies” of IEA SHC Task 70 / EBC Annex 90 “Low Carbon, High Comfort Integrated Lighting,” has been addressing this challenge head-on. Subtask D aims to advance the wide-scale adoption of environmentally performing da

Characterization of Non-Wide-Sense Stationarity for Distributed Massive MIMO Channels

Distributed massive multiple-input multiple-output (MIMO) communication is envisioned as one of the key paradigms of future MIMO systems. To investigate non-wide-sense stationarities (non-WSSs) in distributed massive MIMO channels, this paper first presents an indoor channel measurement campaign, where distributed arrays with a total of 128 elements were implemented. Then relying on the correlatio

Staging, Accommodating or Caring : Reviewing the Human Labor Involved in Shaping Robots into Agents

This review examines the hidden and invisible labor humans perform to enable robots to function as agents within Human-Robot Interaction (HRI). While robot agency is often framed as internal and autonomous, this perspective overlooks the relational dynamics that sustain robot functionality in real-world settings. Drawing on feminist theory, the review highlights how humans frequently share the res

Ray-tracing-assisted High-Resolution Parameter Estimation for Dynamic Millimeter-Wave Channels

An accurate description of the wireless channel is essential to the development of modern wireless systems. In order to mathematically model the propagation channel, one important prior step often done is high-resolution parameter estimation. The estimation accuracy of this step has a significant impact on how well the channel models can represent reality. In this paper, we address this by improvi