Results 161 to 170 of about 5,601 (284)

Global agricultural value chains and food prices

American Journal of Agricultural Economics, EarlyView.
Abstract We study the relationship between the extent of participation in global agricultural value chains (GAVCs) and food prices at the country level. Using longitudinal data on a sample of 138 countries for the period 2000–2015 and a shift‐share instrumental variable design, we study how the extent of a country's participation in GAVCs in a given ...
Bernhard Dalheimer, Marc F. Bellemare
wiley   +1 more source

Real-time rotational speed control and EEDI reduction research of rotor sail via high-Re aerodynamics and power Rose graph. [PDF]

Sci Rep
Lin H, Sun C, Li J, Li X.
europepmc   +1 more source

Evaluating synthetic substitutes to reduce illegal harvesting and support species recovery

Conservation Biology, EarlyView.
Abstract Providing synthetic substitutes is a widely promoted strategy to shift consumer demand away from wildlife products derived from threatened species. Yet, there is little evidence on whether product substitution prevents illegal or unsustainable harvesting and contributes to the recovery of threatened populations.
Aditya Shekhar Malgaonkar, Gareth Whittington‐Jones, Tristan Dickerson, Maswabi Lishandu, Sarah Davies, Zoe Woodgate, Xia Stevens, Choolwe Mulenga, Gift Mulenga, Mathew Phiri, Lucky Mulenga, Manyando Mukela, Gryton Kasamu, Willem A. Nieman, Gareth Mann, Abishek Harihar, Diogo Veríssimo, Rob Pickles   +17 more
wiley   +1 more source

Topology modeling and energy efficiency prediction of parallel chillers based on deep learning. [PDF]

Sci Rep
Liu Y, Yang X, Zhang L, Tian Y.
europepmc   +1 more source

Informal supply chains of wild meat from rural Amazonia and food security in an urban center

Conservation Biology, EarlyView.
Abstract Iquitos, the most populated city in the Peruvian Amazon, is a hub in the regional supply chain of wild meat and supplies urban consumers. Studies on wild meat consumption have focused primarily on markets, limiting the scope of species considered to those that are economically valuable and potential inferences from those data.
Fiorella Briceño Huerta, Michael P. Gilmore, Mark Bowler, Brian M. Griffiths   +3 more
wiley   +1 more source

Real-time emission prediction for ship engine using stacked time-series learning: a transformer-XGBoost hybrid framework. [PDF]

Sci Rep
Lim S, Oh J.
europepmc   +1 more source

Optimization of the Spatial Position of the Vibration Acceleration Sensor and the Method of Determining Limit Values in the Diagnostics of Combustion Engine Injection System. [PDF]

Sensors (Basel)
Monieta J, Kasyk LW.
europepmc   +1 more source

Comparison between Full-scale Measurements and Theoretical Fuel Consumption Model in a Real Arctic Ship Navigation

, 2019
Due to the global warming and the continuous decline of Arctic sea ice, maritime transport in the Arctic region has been increased dramatically. While operating in the Arctic area, ships face regular environment loads and ice loads synchronously, the ...
Lang, Xiao, Jonasson, Lars, Eriksson, Leif, Zhang, Chi, Mao, Wengang, Zhang, Di   +5 more
core  

Golden weapons and golden fetters: From the gold standard to the new geopolitics

The Economic History Review, EarlyView.
Abstract This paper explores the historical relationship between monetary regimes, security concerns, and geopolitical tensions, particularly focusing on the role of gold. Throughout history, monetary systems have been deeply intertwined with international state systems and security provisions.
Harold James
wiley   +1 more source

Optimal design of a hybrid ship energy management system under various sea conditions using Model Predictive Control. [PDF]

PLoS One
Mushtaq R, Iqbal M, Khaliq A, Iqbal J.
europepmc   +1 more source