水资源永续支持区域经济发展的理论与实践

从基本概念入手，界定了水资源、区域经济可持续发展、水资源永续支持的新内涵，提出了水资源永续支持区域经济发展的理论，包括区域经济可持续发展理论、水资源永续利用理论、水资源支持经济发展理论和水资源永续支持协调决策理论。在此基础上构建了水资源永续支持区域经济发展模型，并以陕北能源基地为实例，对理论和模型进行了验证。     

Convergence of Appell Polynomials of Long Range Dependent Moving Averages in Martingale Differences

We study limit distribution of partial sums S_N,k(t) = _{s = 1} ^{[N t]} A_k(X_s) of Appell polynomials of the long-range dependent moving average process X_t> = _{i t} b_{t - i i}, where {_i} is a strictly stationary and weakly dependent martingale difference sequence, and b_i i^{d - 1} (0 < d < 1/2). We show that if k(1-2 d)<1, then suitably normalized partial sums S_N,k(t) converge in distribution to the kth order Hermite process. This result generalizes the corresponding results of Surgailis, and Avram and Taqqu obtained in the case of the i.i.d. sequence { _i}.     

刍议德育与心理健康教育之异同

德育与心理健康教育有着不同的界定功能,在育人任务、目标、方式等方面既有差异性又有一致性。文章阐述了在育人功能方面德育与心理健康教育所发挥的不同作用,从而避免把德育与心理健康教育相互混淆或者顾此失彼。阐述了在更好地发挥各自的优势前提下,如何使之取长补短、互相渗透,实现二者的有效结合。     

论地方政府在区域经济协调发展中的作用

在经济转轨时期,地方政府在区域经济发展中的作用显得异常重要。为了引导、扶持当地经济健康、持续、快速发展,地方政府必须根据市场经济的发展规律和当地经济发展的现状,适时而有效地进行职能转变。     

论区域高校社会服务观念转变

区域高校必须及时转变社会服务观念以适应社会发展的要求.区域高校社会服务观念的转变,首先要进一步深化对社会服务的认识:区域高校开展社会服务,是高等教育发展的必然趋势,是区域社会经济发展的客观要求,是区域高校自身生存和发展的需要;其次,破除社会服务的观念性障碍,封闭保守思想,盲目自大思想,畏难情绪和等、靠、要思想.     

关于构建和谐社会背景下的教育公平的思考

教育公平与和谐社会是非此无彼、由此及彼的关系。为此,教育不公平问题必然对构建和谐社会产生一定的影响。解决当前教育不公平问题应是全社会共同努力,采取的对策包括:第一,政府应加大教育投入并采取相应的倾斜政策教育;第二,实施教师岗位交流;第三,建立中央垂直拨款的教育经费投入体制;第四,改革现有的教育评价体系;第五,落实科学发展观,实现均衡教育;第六,坚持以人为本,切实做到公平、公正。     

原平市国土开发利用的内外环境分析

本文根据笔者编制《原平市国土综合规划》的成果,从原平市的市情特点出发,探讨原平市的战略地位、国土资源优劣势,以及外部环境与市场分析等问题,并在此基础上提出原平市宏观调控、重点倾斜和总体协调的战略模式.     

关于省际国民收入差异度的衡量

目前，区域间发展差异是区域经济研究的一个热点问题．本文研究了省与省之间国民收入差异的衡量，并得出了与众不同的结论．笔者认为：差距先是缩小，后是扩大．     

Nonparametric tests for bounds on the derivative of a regression function

We consider two tests of the null hypothesis that the k-th derivative of a regression function is uniformly bounded by a specified constant. These tests can be used to study the shape of the regression function. For instance, we can test for convexity of the regression function by setting k=2 and the constant equal to zero. Our tests are based on k-th order divided difference of the observations. The asymptotic distribution and efficacies of these tests are computed and simulation results presented.Research supported by Natural Sciences and Engineering Research Council of Canada Grant OGP0007969.Research supported by National Science Foundation Grant DMS-9306738.     

Correspondence between spin-dynamic phases and pulse program phases of NMR spectrometers

Spin state selective experiments have become very useful tools in solution NMR spectroscopy, particularly in the context of TROSY line narrowing. However, the practical implementation of such pulse sequences is frequently complicated by unexpected instrument behavior. Furthermore, a literal theoretical analysis of sequences published with specific phase settings can fail to rationalize such experiments and can seemingly contradict experimental findings. In this communication, we develop a practical approach to this ostensible paradox. Spin-dynamic design, rationalization, and simulation of NMR pulse sequences, as well as their confident and reliable implementation across current spectrometer hardware platforms, require precise understanding of the underlying nutation axis conventions. While currently often approached empirically, we demonstrate with a simple but general pulse program how to uncover these correspondences a priori in the general case. From this, we deduce a correspondence table between the spin-dynamic phases used in NMR theory and simulation on the one hand and pulse program phases of current commercial spectrometers on the other. As a practical application of these results, we analyze implementations of the original (1)H-(15)N TROSY experiment and illustrate how steady-state magnetization can be predictably, rather than empirically, added to a desired component. We show why and under which circumstances a literal adoption of phases from published sequences can lead to incorrect results. We suggest that pulse sequences should be consistently given with spin-dynamically correct (physical) phases, rather than in spectrometer-specific (software) syntax.