Xu Yang, Junfeng Yang, Yupeng Jin, Zhongchao Liu
A New Method for Bearing Fault Diagnosis across Machines Based on Envelope Spectrum and Conditional Metric Learning
Sensors (Basel, Switzerland)
research shows social capital important explaining crime heterogeneous across space social capital considered latent construct composed variety indicators blood donations voter turnout voluntary contributions community wellbeing trust isolate exogenous variation social capital three historical variables used instruments fraction foreigners number schools fraction protestants 1859 historical information provides heterogeneity across municipalities three variables application dutch municipalities 2sls estimates suggest exogenous component social capital significantly negatively correlated current crime rates controlling range contemporaneous socioeconomic indicators next robustness analysis shows social capital indicators useful others applied economic research