Results 91 to 100 of about 13,991,990 (295)
Lost in aggregation? On the importance of local food price data for food poverty estimates
American Journal of Agricultural Economics, EarlyView.Abstract This paper explores within‐country variations in food price dynamics and food poverty estimates by employing local market price data and national consumer price index (CPI) data. Our results show that national CPI data may be useful for approximating national trends but they fail to detect and identify spatial variations in local trends, which
Stephan Dietrich +4 more
wiley +1 more source
Application of hydrologic forecast model
Water Science and Technology, 2012 In order to overcome the shortcoming of the solution may be trapped into the local minimization in the traditional TSK (Takagi-Sugeno-Kang) fuzzy inference training, this paper attempts to consider the TSK fuzzy system modeling approach based on the visual system principle and the Weber law.
Xu, Hua, Xue, Hengxin, Chen, Zhiguo
openaire +2 more sources
Long Term Runoff Analysis of the Lena River Basin using a Distributed Hydrological Model [PDF]
, 2009 本研究ではレナ川流域を対象に長期間の日単位河川流量を推定できる水文モデルの構築を目的とした．本研究で構築した水文モデルは，植生・積雪・土壌の熱・水交換を考慮できる陸面モデルと，河道網上の洪水追跡による流出モデルから構成され，陸面モデルで計算された土壌からの流出水が流出モデルの入力値となる．対象流域では，遅い流出成分と冬季間の河川氷が流出に大きな影響を与えている．このため，流出モデルでは，1）陸面モデルで計算された流出水の30 ％を遅い流出成分として，貯留関数を介して流出モデルの入力として与えること，2 ...
朴, 昊澤 +5 more
core +1 more source
Climate change and perennial crop production: Evidence of yield impact and adaptation in California
American Journal of Agricultural Economics, EarlyView.Abstract Perennial crops are economically important. They contribute to food security, providing essential nutrients that are often lacking in annual crops, and provide additional environmental benefits compared with annual crops. Despite their importance, empirical research on the impacts of climate change and adaptation on perennial crops remains ...
Yuanyuan Wen +2 more
wiley +1 more source
Deep Learning Prediction of Streamflow in Portugal
HydrologyThe transformative potential of deep learning models is felt in many research fields, including hydrology and water resources. This study investigates the effectiveness of the Temporal Fusion Transformer (TFT), a deep neural network architecture for ...
Rafael Francisco, José Pedro Matos
doaj +1 more source
Propagation of uncertainty from observing systems and NWP into hydrological models : COST-731 Working Group 2 [PDF]
, 2010 The COST-731 action is focused on uncertainty propagation in hydrometeorological forecasting chains. Goals and activities of the action Working Group 2 are presented.
Roulin, Emmanuel +19 more
core +1 more source
Food insecurity and unemployment among immigrants in the United States
American Journal of Agricultural Economics, EarlyView.Abstract Immigrants can be more vulnerable to economic downturns and, during periods of economic hardship, more likely to experience food insecurity compared to natives. This study examines the differential effect of the unemployment rate on the probability of being food insecure among diverse groups of immigrant households relative to natives in the ...
Siwen Zhou +3 more
wiley +1 more source
American Journal of Agricultural Economics, EarlyView.Abstract Discrete choice experiments are increasingly being used to estimate land managers' willingness to accept participation in incentive‐based environmental programs. This is a specific application of discrete choice experiments: the estimation of willingness to accept for a private good (program participation) where respondents have to make trade ...
Anastasio J. Villanueva +2 more
wiley +1 more source
Impact of Infiltration Process Modeling on Runoff Simulations: The Bonis River Basin
Proceedings, 2018 Integrated water resources management at the catchment scale, considering the full water cycle as manageable, is a primary approach to improve water use efficiency and promote sustainable water management solutions.
Giovanni Ravazzani +3 more
doaj +1 more source
Hydrological models are mediating models [PDF]
, 2013 Abstract. Despite the increasing role of models in hydrological research and decision-making processes, only few accounts of the nature and function of models exist in hydrology. Earlier considerations have traditionally been conducted while making a clear distinction between physically-based and conceptual models.
L. V. Babel, D. Karssenberg
openaire +4 more sources