Results 221 to 230 of about 16,074,262 (296)

Integrating 72-h BUN/Cr trajectories with interpretable machine learning for 28-day mortality after acute stroke: a dual-center landmark study. [PDF]

Front Neurol
Cheng Z, Lu Z, Wang S, He M, Lv Y, Duoji Z, Jin X, Fan W, Han P, Zhang Q.   +9 more
europepmc   +1 more source

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning

American Journal of Agricultural Economics, EarlyView.
Abstract Preferential trade agreements (PTAs) contain various non‐tariff provisions, yet identifying their trade effects remains challenging because these commitments are high‐dimensional and strongly correlated within agreements. We estimated a theory‐consistent structural gravity model with domestic flows for 26 agricultural subsectors over 1988–2017
Dongin Kim, Sandro Steinbach
wiley   +1 more source

Freespace "twistronics": moiré structured light for optical supertopologies. [PDF]

Light Sci Appl
Dev V, Shen Y.
europepmc   +1 more source

Farm labor scarcity and its uneven impacts on crop producers in the United States

American Journal of Agricultural Economics, EarlyView.
Abstract This study is the first to evaluate the impacts of farm labor scarcity on producers in the United States across different crop production systems. Between 2002 and 2017, we disentangle the effects of labor scarcity from the impacts of rising commodity demand, technological change, and supply of other inputs on labor market outcomes.
Srabashi Ray, Alexandra E. Hill, Iman Haqiqi, J. Edward Taylor, Thomas W. Hertel   +4 more
wiley   +1 more source

Development and internal validation of preoperative clinical and ultrasonographic models for cervical lymph node metastasis in papillary thyroid carcinoma. [PDF]

Gland Surg
Tan W, Wang J, Luo H, Zhou M, Tang Q.
europepmc   +1 more source

Using pre‐ and post‐entry data to identify the effect of ethanol plant entry on the spatial pattern of corn prices: A study in Indiana

American Journal of Agricultural Economics, EarlyView.
Abstract We estimate the long‐run effect of ethanol plant entry on local corn prices using a long‐horizon difference‐in‐differences framework that combines matching with fixed effects while explicitly accounting for treatment intensity and spatial heterogeneity.
Jinho Jung, Juan P. Sesmero, Ralph Siebert   +2 more
wiley   +1 more source

Are dairy cows replaced too early? Evidence from a structural model and cow‐level data

American Journal of Agricultural Economics, EarlyView.
Abstract In past analyses of animal replacement decisions, studies have claimed that dairy farms often replace dairy cows too early to be maximizing profits. I estimate a structural model of asset replacement to determine the motives behind early replacement of dairy cows.
Jared P. Hutchins
wiley   +1 more source

Clinical Performance Evaluation of Demographic-Based Liver Volumetry. [PDF]

Life (Basel)
Anbari Y, Lopez BP, Mahvash A, Yousefi A, Kappadath SC.   +4 more
europepmc   +1 more source

Two years and counting: The dynamics of long‐term youth mentoring and association with parent and peer relationships

American Journal of Community Psychology, EarlyView.
Abstract The current study seeks to explore the reciprocal associations between mentor–mentee relationship strength and relationships with parents and peers across 2 years of mentoring. It is a secondary analysis of data collected by a national mentoring organization from youth (N = 1368; M age = 11.5 years; 59% female; White [n = 629], 30% Black [n ...
Westley L. Fallavollita, Michael D. Lyons   +1 more
wiley   +1 more source