Results 161 to 170 of about 1,090,311 (343)

Inverse‐L Shaped Evaporator Based on La1−xSrxMnO3 Perovskite with Efficient Salt Collection via Localized Salt Gradient

open access: yesAdvanced Energy Materials, EarlyView.
Solar desalination offers a sustainable route to freshwater but is often hindered by low evaporation rates and salt fouling. Here, it is demonstrated that La0.7Sr0.3MnO3 enables efficient photothermal conversion via intra‐band trap states, achieving a high evaporation rate of 3.40 kg m−2 h under one sun.
Sourav Chaule   +4 more
wiley   +1 more source

Developments in the status and content of geography teaching in the secondary schools of Finland in 1770-1888

open access: yesFennia: International Journal of Geography, 1982
Geography became established in the school curriculum in Finland at the turn of the 19th century. It was regarded as a sister discipline to history, and both were considered important elements in a general education. Geog­raphy was thought to provide the
Hannele Rikkinen
doaj  

Incorporating economic multipliers in a bid adjustment algorithm for public food procurement decision making

open access: yesApplied Economic Perspectives and Policy, EarlyView.
Abstract We present an adjusted bid price mechanism that incorporates economic multiplier effects in public food procurement decision making. Under Input–Output model assumptions, the algorithm estimates enhanced tax revenues to state governments through multiplier effects associated with in‐state supplier purchasing.
Todd M. Schmit, Xiaoyan Liu
wiley   +1 more source

Towards a general theory of geographic representation in GIS [PDF]

open access: bronze, 2006
Michael F. Goodchild   +2 more
openalex   +1 more source

Dynamic changes in the structure and concentration of the international grain and oilseed trading industry

open access: yesApplied Economic Perspectives and Policy, EarlyView.
Abstract This paper aims to describe the evolution of firm and industry strategies and to analyze detailed transaction data on the structure of the international grain trading industry. Specifically, data are developed from vessel nominations, and these were used to derive measures of concentration and determine how these change across selected ...
William W. Wilson   +2 more
wiley   +1 more source

Places and spaces in the weightless economy

open access: yes, 2016
Proposition of the 'end of geography' based on globalization and digitalization has been heavily criticized by different geographers in the last decades.
Gong, Huiwen
core  

What matters for agricultural trade? Assessing the role of trade deal provisions using machine learning

open access: yesApplied Economic Perspectives and Policy, EarlyView.
Abstract This paper employs machine learning to determine which preferential trade agreement (PTA) provisions are relevant to agricultural trade patterns and the factors that may influence their adoption. Utilizing the three‐way gravity model, we apply plug‐in Lasso regularized regression to pinpoint predictive PTA provisions for agricultural trade ...
Stepan Gordeev   +3 more
wiley   +1 more source

Quantifying the land‐use change due to soybean‐based biodiesel in the United States

open access: yesApplied Economic Perspectives and Policy, EarlyView.
Abstract We quantify the impact of soybean oil‐based biodiesel production on US cropland, using a method that accounts for the intermediate effect of soybean crushing facilities. Based on U.S. Environmental Protection Agency data for biodiesel production and proprietary data for soybean crushing facilities over 2011–2020, we find that the elasticities ...
Ruiqing Miao   +5 more
wiley   +1 more source

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