基于PCNN的RLNSW-NSCT卫星云图融合算法研究

提出了一种基于PCNN的RLNSW-NSCT卫星云图融合新方法。首先采用基于冗余提升不可分离小波的NSCT变换对卫星云图进行变换。对带通方向子带系数的融合设计了基于PCNN的融合规则,而低通子带系数的融合则采用基于图像区域信息熵的系数加权融合规则。为验证算法的有效性,对不同多尺度变换算法和不同融合规则分别进行了融合实验。结果表明该方法在较多地保留云图红外信息的同时,具有更好图像细节表达能力,融合云图的云层特征更为分明。     

Finding finer functions for partially characterized proteins by protein-protein interaction networks

Based on high-throughput data, numerous algorithms have been designed to find functions of novel proteins. However, the effectiveness of such algorithms is currently limited by some fundamental factors, including (1) the low a-priori probability of novel proteins participating in a detailed function; (2) the huge false data present in high-throughput datasets; (3) the incomplete data coverage of functional classes; (4) the abundant but heterogeneous negative samples for training the algorithms; and (5) the lack of detailed functional knowledge for training algorithms. Here, for partially characterized proteins, we suggest an approach to finding their finer functions based on protein interaction sub-networks or gene expression patterns, defined in function-specific subspaces. The proposed approach can lessen the above-mentioned problems by properly defining the prediction range and functionally filtering the noisy data, and thus can efficiently find proteins’ novel functions. For thousands of yeast and human proteins partially characterized, it is able to reliably find their finer functions (e.g., the translational functions) with more than 90% precision. The predicted finer functions are highly valuable both for guiding the follow-up wet-lab validation and for providing the necessary data for training algorithms to learn other proteins.     

最小二乘法在直线矢量化技术中的应用

由于在计算机中图象的存储和显示常常都是以离散的点阵方式进行的，因而给直线的识别带来了很大的困难。本文采用最小二乘法进行参数估计，以提取模式的特征，得到了比较简单的直线矢量化算法，该算法较好的克服了矢量化算法中存在的短线和畸变的缺陷。     

现阶段我国投资率与投资效率关系分析

本文在对我国投资率和投资效率进行历史走势分析和国际比较分析的基础上,通过建立非线性回归模型,实证分析了我国投资率与投资效率的关系。结果表明,我国投资率与投资效率在过去较长时期里表现出一定的正相关性,但近期二者关系出现负相关迹象;与样本国家相比,1978—2012 年间,我国投资率一直最高,投资效率高于发达国家但低于新兴市场国家;实证结果表明,我国投资率与投资效率具有先升后降的“倒U 型”关系,投资率是投资效率的格兰杰成因。目前我国的投资率水平已经超过了使投资效率处于最优的值,投资率升高会使投资效率下降。因此,我国应该通过合理调控投资率,来促进投资效率提升。     

蓄盐类抗凝冰沥青混合料长效性评价

冰雪灾害是影响道路运输效率和生命财产安全的主要因素,主动解决此问题的蓄盐类抗凝冰路面技术应用十分广泛,但又鲜有长效性评价相关研究.从力学角度探究凝冰与蓄盐抗凝冰沥青混合料界面黏结力,提出蓄盐抗凝冰沥青混合料除冰雪性能失效的临界有效氯离子浓度;通过全环境箱模拟车辆荷载和降雨条件下氯离子的释放特性,采用离子选择电极法(io...     

城市居住区空气中苯系物的测定

研究了城市居住区空气中苯、甲苯、二甲苯的采集和测量方法．分别在受污染居住区和未受污染居住区用活性炭吸收法采集空气，用气相色谱法测定苯系物．讨论了活性炭的吸收效率，苯系物的分离、测定方法的准确度和精密度．测得某城市居住区空气中苯、甲苯、二甲苯的日均值分别为０．０３２，０．０４８，０．０４０ｍｇ／ｍ３．     

One-step disposal of Cr (Ⅵ)-bearing wastewater by natural pyrrhotite

Cr(VI)-bearing wastewater can be treated by natural pyrrhotite which is used for reductant to reduce Cr(VI) and precipitant to precipitate Cr(III) simultaneously. The disposal products can be divided into three parts in the beakers, namely supernatant in the upper part, the yellowish colloidal precipitates in the middle part and the pyrrhotite in the lower part. The content of total Cr=Cr(VI)+Cr(III) in the supernatant liquid is 0.06 mg/L, which is lower than 1.5 mg/L of the discharge standard of China and near to 0.05 mg/L of the standard of potable water. This one-step disposal composing of both reduction and precipitation which is traditionally divided into two independent steps called reducing technology and precipitating technology respectively. The new method is of obvious economic advantage and favourable to decreasing surplus mud derived from adding Ca(OH)₂ to precipitate Cr(III) traditionally so as to avoid recontamination. In fact, sodium sulfite (Na₂SO₃) used in disposal of Cr(VI) was traditionally produced from natural mineral of pyrrhotite (FeS). One molecule of FeS is 4 times more than that of Na₂SO₃ from a view point of rational use of mineral resources. Therefore the prospective of application of the one-step disposal of Cr(VI) method is full of promise.     

后现代主义文化语境下李白文化的尴尬处境

李白文化的地位是崇高的、影响是深远的,不过,李白文化当前正面临着前所未有的挑战。本文运用后现代主义文化理论对李白文化的现实处境进行研究,剖析当前李白文化所处的尴尬处境,分析其原因,并尝试提出解决问题的思路,进而探讨李白文化在后现代主义思潮下的走向。     

浅谈建筑外墙涂料的质量控制

任何不符合质量要求的产品，都势必影响整个建筑物的质量。为此，从最基础的原材料把关入手，注重操作工序质量的改进和提高，是文章阐述的特征。对施工过程中容易出现的质量问题和一些不正确的做法及表现做简要分析，并按照现行标准及规范，结合本地区的特点，提出预防及改进措施。     

浅谈寒冷地区大体积砼冬季施工技术

文章重点介绍了寒冷地区侯家沟大桥承台大体积砼施工技术方案及实施工艺。