标题： 搜寻s-过程增强的金属贫乏恒星 显示英文标题

标题： Searching For s-Process-Enhanced Metal-Poor Stars

摘要： 我们展示了使用中等分辨率光谱（1-2{\AA }）估算钡（[Ba/Fe]）和锶（[Sr/Fe]）丰度比的初步结果。 我们利用多元回归和人工神经网络技术，在丰度比和钡、锶的线指数之间建立了校准关系。 文中还比较了这两种技术（显示了后者的优点），并讨论了未来的工作。 显示英文摘要

摘要： We present preliminary results for estimation of barium ([Ba/Fe]) and strontium ([Sr/Fe]) abundances ratios using medium-resolution spectra (1-2 {\AA}). We established a calibration between the abundance ratios and line indices for Ba and Sr, using multiple regression and artificial neural network techniques. A comparison between the two techniques (showing the advantage of the latter), as well as a discussion of future work, is presented.