Peering into the dark (ages) with low-frequency space interferometers: Using the 21-cm signal of neutral hydrogen from the infant universe to probe fundamental (Astro)physics

The Dark Ages and Cosmic Dawn are largely unexplored windows on the infant Universe (z ~ 200–10). Observations of the redshifted 21-cm line of neutral hydrogen can provide valuable new insight into fundamental physics and astrophysics during these eras that no other probe can provide, and drives the design of many future ground-based...

The methodologies, geographies, and technologies of energy justice: A systematic and comprehensive review

The energy justice literature has seen a rapid surge in both academic and practical popularity. However, there has been less systematic reflection on the research conducted so far, its scope or contribution, nor what it might mean for the future of the concept. To provide insights, this paper presents the results of a systematic and...

Actuated wound sensing, closing and healing in flexible sheets using functional macro cells

This paper describes an examination and demonstration of a flexible sheet system based on a functional macro-scale architecture that detects and localizes cutting damage, closes the wound through mechanical actuation, repairs the cut with healing liquids that solidify in the cut. Following sensing of successful healing, the system deactivates...

Biogeochemical processes and geotechnical applications: Progress, opportunities and challenges

Consideration of soil as a living ecosystem offers the potential for innovative and sustainable solutions to geotechnical problems. This is a new paradigm for many in geotechnical engineering. Realising the potential of this paradigm requires a multidisciplinary approach that embraces biology and geochemistry to develop techniques for beneficial...

Methods for monitoring the detection of multi-temporal land use change trhough the classification of urban areas

Urban areas are complicated due to the mix of man-made features and natural features. A higher level of structural information plays an important role in land cover/use classification of urban areas. Additional spatial indicators have to be extracted based on structural analysis in order to understand and identify spatial patterns or the spatial...

First experiences with High Resolution Imagery Based Adjudication Approach for Social Tenure Domain Model in Ethiopia

Since the start of the 21st century, great progress has been made with rural land certification in Ethiopia. This process, however, has been mainly confined to the so called first phase certificates. These certificates do identify the land holding households (with name etc. and photographs), but limit the geo-referencing to indicating the size ...

Potential model for tetrathiafulvalene based on inelastic neutron scattering and Raman spectra

Tetrathiafulvalene (TTF) is a key molecule in the family of charge-transfer salts of interest for their novel transport properties. The correspondence between transport property and electron-molecular vibration coupling requires that we understand the phonon density of states for these materials. Here we report the results of a low temperature...

Continuing concept design of high speed SWATH Ferry VALKERIE

Failure mode and effect analysis of a subsea production system

Power spectral measurements of clear air turbulence associated with jet streams

Power spectra of the vertical component of atmospheric turbulence obtained from concurrent measurements on an aircraft and at fixed points

Power spectra of the vertical component of turbulence obtained from concurrent measurements at fixed points on a captive balloon cable and on an aircraft flown in the vicinity of the balloon are compared. The comparison is restricted to a single flight in which runs were made at three heights, corresponding to the heights of observation on the...