Artificial Neural Network for Combining Forecasts

ＡｒｔｉｆｉｃｉａｌＮｅｕｒａｌＮｅｔｗｏｒｋｆｏｒＣｏｍｂｉｎｉｎｇＦｏｒｅｃａｓｔｓ￥ＳｈａｎｍｉｎｇＳｈｉ，ＬｉＤ．Ｘｕ＆ＢａｏＬｉｕ（ＤｅｐａｒｔｍｅｎｔｏｆＣｏｍｐｕｔｅｒＳｃｉｅｎｃｅ，ＵｎｉｖｅｒｓｉｔｙｏｆＣｏｌｏｒａｄｏａｔＢｏｕｌ...     

提高学生科技能力,培养信息技术创新人才

培养计算机与电子信息技术的创新人才是信息产业发展的需要．本文介绍我们在培养学生的创新精神 和科技能力,提高学生分析问题和实际解决问题能力等方面的一些思考和具体的做法．     

第二语言习得理论对我国英语教学产生的影响

第二语言习得理论的研究，加深了我们对语言学习过程的理解，也对我国英语教学产生了深远的影响。本文概述了第二语言习得理论研究成果对我国英语教学所产生的影响。     

耦合拟不动点定理

根据耦合拟不动点和上半连续算子的定义，讨论了在一定连续条件下集值混合单调算子的耦合拟不动点存在性问题，证明了，若A是非空弱闭值上半连续增算子，则A存在不动点以及若A是非空弱闭值上半连续混合单调算子，则A存在偶合拟不动点等结论．     

二阶非线性微分方程解的振动性与渐近性

讨论了一类二阶非线性微分方程解的振动性与渐近性,得到了该方程有界解的振动性与渐近性的新的充分条件,改进并推广了已有的结果。     

伸缩方程Lpc解的讨论

研究一般扩张矩阵伸缩方程L^pc解的性质，相同分形中的选代函数系统构造tile和tiling性质，克服了通用方法中的不足，得到了这类方程存在紧支撑解的充要条件，从而推广了有关的结果．     

渐近线性二阶Hamilton系统的非平凡周期解

利用极小极大方法得到了一类渐近线性二阶Hamilton系统的非平凡周期解的存在性结果。     

森林面积分布系统的最优控制存在性问题

本文研究森林面积分布系统的最优控制问题。本文将林木总和长消率作为控制变量，以“范数最小”来衡量其最优性，利用空间Ｌ＾２（０，Ｔ）Ｔ〉０的自反、光滑和严格凸性，给出了森林面积分布系统最优控制的一个存在性定理。     

一种高阶有理H-F插值逼近算子(Ⅲ)

本文构造了一类有理Hermite-Fejer插值算子,并给出了该算子和逼近阶。     

Methodological foundations of systems methodologies

In social systems science generally, and in management science particularly, recent developments in the variety of types of specific problem-solving methodologies (under the rubric of hard and soft systems approaches) have given an impetus to a line of inquiry, as well as debate on the nature of those methodologies. On the one hand, there has been the view that what we are witnessing is a form of Kuhnian crisis. On the other hand, a complementarist view of developments has been argued and a contingency approach proposed. But one thing has been common among the competing views: a belief that the prospects for further advances in the design and application of those methodologies, and in resolving the current controversies, lie in serious attempts to reconsider and clarify the underlying metatheoretical assumptions and concerns. This paper is an attempt to contribute to such an endeavor. A brief exposition of three methodological foundations (namely, empiricism, hermeneutics, and critique) is made, not only with the purpose of highlighting the nature as well as the limits of their epistemological and ethical claims, but also as a basis for illuminating both the nature of contemporary work on systems inquiry, design, and problem solving and the ongoing debate on what constitutes appropriate criteria for choice of specific methodologies.