走航式ADCP技术在黄河下游水文测验中的应用探讨

虽然走航式ADCP技术在河流测验中的应用越来越广泛,但是在黄河上应用却基本上处于空白,由于黄河含沙量高、河床流沙严重,对精度影响十分明显。通过在高村、孙口、艾山水文站外接GPS的比测试验成果分析,探讨走航式ADCP技术在黄河下游水文测验中的应用情况,提出解决测验中遇到的技术问题。     

中日科技立法及公共研究开发评估之比较

本文通过对日本《科学技术基本法》和《中华人民共和国科学技术进步法》的比较;日本"关于国家研究开发评估的大纲指针"和"中国国家高技术研究发展计划(863计划)"项目评估、"国家重点基础研究发展计划(973计划)"项目评估等的比较,说明了:中日关于公共研究开发评估有很多类似的地方,起步相差不多,水平大致相当,在理念、方法、实践层面都需要不断探索,相互学习、相互借鉴。     

Predicting long-term earnings growth: Comparisons of expected return models,submartingales and value line analysts

This paper derives four–five year predictions of growth rates of accounting earnings per share implicit in four expected return models commonly used in financial research. A comparison of such growth rates with those produced and reported by Value Line analysts and those generated by a submartingale model revealed the following: two expected return models—the Sharpe–Lintner–Mossin model and the Black model—were significantly more accurate than the submartingale model, though not significantly more accurate than the other return models. However, the growth rate forecasts provided by Value Line significantly outperformed all the other models tested—none of which relied on the direct input of a security analyst.     

证券交易所股份化改革的国际比较

从20世纪90年代以来,世界各证券交易所纷纷实施股份化改革。本文试图从股份化改革的原因,股份化改革对交易权、所有权、监管和公司治理以及绩效的影响等方面,对目前已经进行股份化改革的证券交易所进行比较,从而初步探讨我国沪深交易所进行股份化改革的必要性和可能采取的改革措施。