Results 11 to 20 of about 4,908 (211)

Wick calculus [PDF]

open access: yesAmerican Journal of Physics, 2008
In quantum field theory the “normal ordering” of operators is routinely used, which amounts to shuffling all creation operators to the left. Potentially confusing is the occurrence in the literature of normal-ordered functions, sometimes called “Wick transforms.” In this paper, we introduce the reader to some basic results, ideas, and mathematical ...
Wurm, A., Berg, M.
openaire   +3 more sources

Wicked problems and a ‘wicked’ solution [PDF]

open access: yesGlobalization and Health, 2018
'Wicked' is the term used to describe some of the most challenging and complex issues of our time, many of which threaten human health. Climate change, biodiversity loss, persisting poverty, the advancing obesity epidemic, and food insecurity are all examples of such wicked problems.
openaire   +4 more sources

Wicking in a Powder

open access: yesLangmuir, 2013
21 pages, 13 ...
Raux, P. S.   +4 more
openaire   +6 more sources

Wicked problems, wicked play

open access: yesFormAkademisk - forskningstidsskrift for design og designdidaktikk, 2020
Design methods need to reconsider ways to avoid othering messiness (or what appears to be contradictory or nonsensical) within wicked problem situations, particularly crisis sites. As such, this paper suggests that play frames (defined as Fun Machines) can be utilised as situated strategies that designers can apply to address paradoxes and ...
openaire   +4 more sources

Training wicked scientists for a world of wicked problems [PDF]

open access: yesHumanities and Social Sciences Communications, 2021
AbstractHumanity faces a number of wicked problems, from global climate change and the coronavirus pandemic to systemic racism and widening economic inequality. Since such complex and dynamic problems are plagued by disagreement among stakeholders over their nature and cause, they are notoriously difficult to solve.
Nicholas C. Kawa   +13 more
openaire   +2 more sources

3D Printing Innovations in Polymeric Porous and Patterned Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil   +13 more
wiley   +1 more source

Blood Biomarkers and Surface‐Enhanced Raman Spectroscopy for Gout: A Comprehensive Review

open access: yesAdvanced Functional Materials, EarlyView.
Schematic illustrating gout disease progression from asymptomatic hyperuricemia to chronic tophaceous disease, highlighting the limitations of conventional imaging and biochemical diagnostics and the potential of engineered SERS platforms for ultrasensitive blood‐based detection of urate‐related biomarkers across disease stages, with the color gradient
Isuri Perera   +6 more
wiley   +1 more source

Co‐Electrospinning Extracellular Matrix with Polycaprolactone Enables a Modular Approach to Balance Bioactivity and Mechanics of a Multifunctional Bone Wrap

open access: yesAdvanced Healthcare Materials, EarlyView.
The incorporation of nondigested ECM and synthetic polymers into a co‐electrospinning system enables the decoupling of bioactivity and mechanical properties within a single wrap. This technique is used to develop a multifunctional bone wrap that achieves augmented membrane durability, sustained infection control, and enhanced vascularity for use in ...
Sarah Jones   +14 more
wiley   +1 more source

Wicked Solutions for Wicked Problems

open access: yesJournal of Systems Thinking
“Wicked problems” are often thought of as a situation that should not exist or an inescapable consequence of complex systems. This paper argues for a paradigm shift in instead understanding wicked problems as feedback from the system (i.e., the real world), resulting from a misalignment between our mental model of the system and the system itself ...
Natasha Steinhall   +7 more
openaire   +1 more source

Elephant‐Skin‐Inspired Porous Cementitious Tiles with Programmable Crack Networks for Passive Cooling

open access: yesAdvanced Materials, EarlyView.
Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang   +5 more
wiley   +1 more source

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