“多元信息供水勘察理论”的研究与应用——以镇江市缺水丘陵山区为例

以数学中的集合理论 (交集 )为基础 ,采用“多元信息供水勘查理论”逐步逼近 ,建立镇江地区缺水丘陵山区供水勘查的逻辑推理模式 ,利用遥感地质调查、水文地质与构造地质勘查以及地球物理综合勘察技术 ,由区域→块段→点的逐步“聚焦”获取富水块段、贮水地质体和贮水构造、布井具体位置的信息 .通过供水勘查实践 ,验证了“多元信息理论”在构造复杂的缺水丘陵山区供水勘查中的优越性 ,同时也指出了“多元信息理论”

“多元信息供水勘查模式”的研究与应用

以数学中的集合理论 (交集 )为基础 ,采用“多元信息理论”逐步逼近 ,建立镇江地区缺水丘陵山区找水的逻辑推理模式。利用遥感、水文地质与构造地质勘查以及地球物理综合勘察技术 ,由区域→块段→点的逐步“聚焦”获取富水块段、贮水地质体和贮水构造、布井具体位置的信息 ,此即为“多元信息供水勘查模式”。通过供水勘查实践 ,验证了该模式在构造复杂的缺水山区供水勘查中的优越性 ,同时也指出了其应用过程中应注意的具体问题。

Determinants of Capital Structure in the Nigerian Listed Insurance Firms

The paper investigates the determinants of capital structure in Nigerian listed insurance firms using data obtained from annual report of the sampled firms for the period of 2001-2010. It used five explanatory variables to measure their effects on debt ratio. Multiple regression is employed as a tool of analysis. The result reveals that all the explanatory variables have statistically and significantly influenced the explained variable. The results approve the prediction of pecking order theory in the case of profitability and trade-off theory in case of tangibility variables. The growth variable supports the agency theory hypothesis whereas size variable confirms to the asymmetry of information theory. It is therefore recommended that the management of listed insurance firms in Nigeria should always consider their positions using these capital structure determinants as important inputs before embarking on debt financing decision.