黄河灌区水热通量的观测与分析

为解决农田节水问题,进行了田间水热通量观测和水热耦合循环过程机理分析。观测系统主要包括:常规气象、辐射、涡度相关法观测系统以及土壤水分观测剖面。该系统能够连续和稳定地观测土壤-植物-大气连续体中的水热循环过程,涡度相关法观测数据具有与国际同类观测一致的精度。对2005年山东省位山引黄灌区冬小麦和夏玉米生长期内水热平衡的分析表明:当叶面积指数较大时潜热是农田能量消耗的主要方式;在冬小麦返青至收割期内作物耗水略小于供水,而在玉米生长期内供水远大于作物耗水,灌区供水充分。     

政治视角制约下文学书写的意义与限度——从陆地《美丽的南方》说开去

以壮族作家陆地的小说《美丽的南方》为批评对象。通过对作品中规范写作与潜在写作内在矛盾的分析,指出其站在民间立场上对乡村文化的生动书写和对人性合理欲望的肯定,在当代少数民族文学史上具有不可忽视的重要意义,并对这一意义可能达到的限度作出合理阐述。     

Analysis of Petri net model and task planning heuristic algorithms for product reconfiguration

Reconfiguration planning is recognized as an important factor for reducing the cost of manufacturing reconfigurable products, and the associated main task is to generate a set of optimal or near-optimal reconfiguration sequences using some effect algorithms. A method is developed to generate a Petri net as the reconfiguration tree to represent two-state-transit of product, which solved the representation problem of reconfiguring interfaces replacement. Relating with this method, two heuristic algorithms are proposed to generate task sequences which considering economics to search reconfiguration paths effectively. At last, an objective evaluation is applied to compare these two heuristic algorithms to other ones. The developed reconfiguration task planning heuristic algorithms can generate better strategies and plans for reconfiguration. The research finds are exemplified with struts reconfiguration of reconfigurable parallel kinematics machine （RPKM）.     

一类装配式流水作业排序问题的启发式算法及其性能比研究

根据Ｆ′２｜ｍ１≥２，ｍ２＝１｜Ｃｍａｘ排序问题是ＮＰ完全问题的论断，提出了ＡＦＳ问题的两个启发式算法，分别给出了应用启发式算法的实例，并证明了该启发式算法在最坏情况下的品性是２的结论     

注重能力培养创新教学方法：改进会计实务教学的几点思考

市场经济条件下，会计实务教学应体现先进性、实用性和高效性，大力提倡启发式教学，建立统计模拟实习考核体系，促进实践性教学由“弹缍”变“刚性”。     

液相色谱智能化——多段梯度洗脱满意分离条件之启发式自动搜索

本文为高性能液相色谱作定量分析,提供一种新颍方法,自动求得峰形分离良好的色谱图,并由此对于仪表之智能化前景作一展望。利用多段梯度洗脱法来改进分离,会引起搜索该条件之复杂化。为此,启发微机来搜索满意的分离条件,而不去搜索最优分离条件,较为合理而且方便。用本法分析人体血液中21种主要氨基酸组分,获得成功。     

实Hilbert空间之闭子空间对闭区间的最佳同时逼近

本文得到实Hilbert空间之闭子空间对闭区间的最佳同时逼近公式。     

Advances in SVM-Based System Using GMM Super Vectors for Text-Independent Speaker Verification

For text-independent speaker verification, the Gaussian mixture model （GMM） using a universal background model strategy and the GMM using support vector machines are the two most commonly used methodologies. Recently, a new SVM-based speaker verification method using GMM super vectors has been proposed. This paper describes the construction of a new speaker verification system and investigates the use of nuisance attribute projection and test normalization to further enhance performance. Experiments were conducted on the core test of the 2006 NIST speaker recognition evaluation corpus. The experimental results indicate that an SVM-based speaker verification system using GMM super vectors can achieve appealing performance. With the use of nuisance attribute projection and test normalization, the system performance can be significantly improved, with improvements in the equal error rate from 7.78% to 4.92% and detection cost function from 0.0376 to 0.0251.     

现存最完整的一份唐代地理全图数据集

中国传统测绘学研究中存在着一个重要问题，就是虽然历史上流传下来大量较高水平的地理全图，但迄今尚未找到一份具体用来绘制这些地图的原始数据集，也不清楚古人如何绘制成这些地图。笔者通过认真分析唐代李吉甫的《元和郡县图志》，发现其中的方向和里程数据就是用来绘制地图的，结合其它文献分析推断：《元和郡县图志》现存最完整的一份唐代地理全图数据集。     

分装式流水作业加工模型的算法研究

分装式流水作业加工模型是从生产实践中提炼出来的一种新的加工模型,是流水作业与复合并行机加工方式的组合.在已证明该问题一般情况下是NP-完全问题,没有多项式算法的基础上,进一步研究了TMF排序问题在特殊情况下的多项式时间算法和一般情况下的启发式算法.