Results 101 to 110 of about 15,943 (261)
Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions
Advanced Materials, EarlyView.Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng +4 more
wiley +1 more source
International Trade without CES: Estimating Translog Gravity [PDF]
This paper derives a micro-founded gravity equation in general equilibrium based on a translog demand system that allows for endogenous markups and substitution patterns across goods.
Dennis Novy
core
History, Culture, and Trade: A Dynamic Gravity Approach [PDF]
What determines trade patterns? Habit persistence in consumer tastes and learning-by-doing in production imply that history and culture matter. Deriving a dynamic gravity equation from a simple model, it is shown that cultural similarity is a product of ...
Douglas L. Campbell
core +2 more sources
Gravity with Intermediate Goods Trade
East Asian Economic Review, 2017 This paper derives the gravity equation with intermediate goods trade. We extend a standard monopolistic competition model to incorporate intermediate goods trade, and show that the gravity equation with intermediates trade is identical to the one ...
Sujin Jang , E. Young Song
doaj +1 more source
Ocean dynamic equations with the real gravity.
Scientific reports, 2021 The article of record as published may be found at https://doi.org/10.1038/s41598-021-82882 ...
openaire +3 more sources
Field Equations for Lovelock Gravity: An Alternative Route [PDF]
Advances in High Energy Physics, 2018 We present an alternative derivation of the gravitational field equations for Lovelock gravity starting from Newton’s law, which is closer in spirit to the thermodynamic description of gravity. As a warm up exercise, we have explicitly demonstrated that, projecting the Riemann curvature tensor appropriately and taking a cue from Poisson’s equation ...
openaire +4 more sources
Advanced 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
Accounting for Pairwise Heterogeneity in Bilateral Trade Flows: A Stochastic Varying Coefficient Gravity Model [PDF]
This paper suggests an alternative way for estimating the gravity equation that takes into consideration country-pair heterogeneity in bilateral trade flows. Specifically, a stochastic varying coefficient gravity model based on Hildreth and Houck’s (1968)
Vangelis Tzouvelekas
core
This paper provides the mechanism behind gravity. We introduce a suppression function based on 4-simplex connectivity, naturally reproducing Newtonian gravity behavior. Computational tests confirm alignment with galaxy rotation curves, cosmic expansion, and large-scale structure growth.
openaire +2 more sources
Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization
Advanced Materials, EarlyView.A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab +8 more
wiley +1 more source