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广义B样条曲线及其节点插入算法
伟松,
华东理工大学学报 , 2007,
Abstract: 通过二阶常系数微分算子的零空间及其初值问题解的唯一性,引入了广义B样条曲线的概念,给出了B样条曲线的一种统一表示形式,介绍了该样条的求值算法及节点插入算法,并对其凸包性质和变差缩减性质作了分析,最后给出了相应算例。数值实验表明:该算法对任意样条都适用,且结果准确、有效。
洪湖新堤干渠水质及污染源调查与分析
Questionnaire Survey about the Water Quality and Source of Pollution in Xindi Canal of Honghu Lake
 [PDF]

许巍,, 封瑛, 李兆华, 张雅钦, 李珍, 杨伊默, 周亮, 冬冬
Advances in Environmental Protection (AEP) , 2014, DOI: 10.12677/AEP.2014.45025
Abstract:
针对洪湖新堤干渠的水质调查实验,我们主要采用国标法测量水体中氨氮,总氮,总磷,COD这四个指标,并在后期的数据分析中采用单因子分析法,结合水质综合评价标准对上述四个指标逐个分析,发现洪湖新堤干渠水质为III类,而且总氮和总磷含量明显偏高,通过实地调查我们发现水体污染和当地支柱产业——水产养殖有着密切的联系。基于各项调查及实验,提出了治理水污染的相关建议。
Due to the survey of water quality in Xindi Canal of Honghu Lake, we used the GB method to meas-ure four types of data which were NH3-N, TN, TP, COD, and single factor analysis method was used in the later data analysis. Combining with the GB3838-2002, we analyzed the four types of data and found that the level of water quality in Xindi Canal of Honghu Lake is Class III. By the local investiga-tion, we found that the reason of water pollution is related to aquaculture which is the local pillar industry. The water protected advices were proposed based on the survey and the experiments data.
新堤干渠水污染防治调查分析
Questionnaire Survey about the Prevention and Control of Water Pollution in Xindi Canal
 [PDF]

张雅钦, 李珍, 封瑛, 许巍,, 杨伊默, 周亮, 冬冬
Advances in Environmental Protection (AEP) , 2014, DOI: 10.12677/AEP.2014.45024
Abstract:
本文结合当地问卷调查的结果及相关调查资料分析了造成干渠水质污染的主要原因,并在此基础上提出改善干渠水环境的相关建议。分析结果表明,污染原因主要为以下几点:过度围网养殖,大量化肥未经农作物利用直接随地表径流进入干渠中,旅游产业带来垃圾污染以及居民环保意识薄弱。新堤干渠作为连接长江与洪湖的重要水渠,所以干渠的水污染防治对长江水污染治理有重要意义。
In this paper, combining with the local questionnaire results and related survey data, the main causes of water pollution of the canal were analyzed, and we proposed some suggestions about the improvement of water quality based on them. The results showed that the reasons of pollution in-clude: excessive barrier net aquiculture; a large amount of chemical fertilizers without being used by crops flowing into the canal along with surface runoff; garbage pollution brought by the tourism industry and the lack of environmental protection awareness of residents. Xindi Canal is an important canal that connects the Yangtze River and Honghu Lake, so the water pollution control of the canal water has important implications for water pollution control of Yangtze River.
高校网络外语教育的系统论研究
On Systematic Study of Online Foreign Language Education in Universities
 [PDF]


Creative Education Studies (CES) , 2015, DOI: 10.12677/CES.2015.32006
Abstract:
实现高校教育的网络科学化和系统化在于能够考虑一切可能的教育资源,特别是学习者的全部经验、目前心理发生和发展逻辑。作为网络教育科学化和系统化的关键一环,外语教育所进行的试点研究从理论到实践上均已朝着该教育发展方向迈出了重要的一步并成为一项立体的系统工程。
To realize the scientification and systematization of university online education, considering all possible education resources is the key, especially the total experience of learners as well as the logic occurrence and development of mentality at present. As a key link of scientific and systematic online education, foreign language education is developing from theory to practice in the pers-pective of systematic education, which has been an important step in the direction of systematic education development and becomes a three-dimensional systematic project.
林氏果蝇线粒体DNA分析
,,彭统序
昆虫学报 , 1997,
Abstract: 本文对Tamura(1988)提纯mtDNA的方法进行改进,建立了林氏果蝇Drosophilalini线粒体DNA大量制备的方法;对采自原产地台湾省的单雌晶系TAW3146.1的线粒体DNA用10种限制性内切酶进行了酶切,得出了林氏果蝇mtDNA的分子量大小为16.3kb;用双酶切法制作了林氏果蝇线粒体DNA酶切图谱,并与属于同一复合种组的D.Kikkawai的酶切图谱进行比较。所用的内切酶有XbaI、AvaI、EcoRV、ScaI、SacI、EcoRI、HindIII、PvuⅡ、BamHI、PstⅡ。
取碎屑状煤芯时的煤层瓦斯含量直接测定方法研究
王刚,,段毅,
采矿与安全工程学报 , 2013,
Abstract: 针对直接法测定煤层瓦斯含量时难以取得完整煤芯的难题,提出了取碎屑状煤芯时的瓦斯损失量数学模型,依据该模型采用分步拟合的方法确定和值,并形成了快速取碎屑状煤芯时的煤层瓦斯含量快速测定方法。现场试验结果表明:采用分步拟合确定瓦斯损失量时,实验测定解吸的瓦斯体积和的相关因子基本在0.99以上,并结合煤层瓦斯含量直接测定工艺测得桐梓煤矿7#,9#和10#煤层瓦斯含量及瓦斯压力,测得结果符合该煤层多次发生突出的情况。表明运用该方法能够准确地计算煤层瓦斯含量,为煤层瓦斯含量作为区域预测煤与瓦斯突出的指标奠定了基础。
全球六边形离散格网的几何最优化设计与空间度量
童晓冲,贲进,金华,
地球信息科学学报 , 2015, DOI: 10.3724/SP.J.1047.2015.00774
Abstract: 全球离散格网系统(DiscreteGlobalGridSystem,DGGS)是一种新型的空间数据模型。它采用特定的方法进行地球表面的同构离散化,提供了一种无缝无叠的多尺度的全球格网结构。DGGS使用格网的地址编码运算代替传统的坐标计算来处理各种空间操作。本文以六边形DGGS为研究对象,提出了一种用于评价格网几何均匀性的新型最优化目标函数,设计了以启发式全局优化方法为核心,结合数值投影变换方法,构建六边形的DGGS。另外,针对DGGS目前的短板问题——空间度量,研究了DGGS上基于格网方法的面积度量、长度度量和角度度量,旨在发展一套全球六边形离散格网上的空间度量体系。
济南市城镇化与工业化耦合关系评价与分析
朱艳,代合治,菲菲
地域研究与开发 , 2012,
Abstract: 以济南市为样本,基于该市改革开放后历年的统计数据,采用国际上常用的IU、NU标准值法判断其城镇化与工业化的关系并进行分析。研究发现,济南市城镇化的发展由过去的严重滞后于工业化逐步趋向于与工业化发展相协调的状态;不同城市的自然环境和区位条件有差别,城镇化和工业化的发展又具有一定的地域性和时序性。因此,以城市为对象,探讨其城镇化与工业化的关系,既能丰富这一领域的理论研究,又能为城市的城镇化和工业化进程提供实践参考。
基于反汇编的智能电表软件功能检测模型
刘金,,陈鑫,邓娟
计算机应用 , 2015,
Abstract: ?电力企业在智能电表的生产过程中发现制造商用于招标展示的样品表和竞标成功后大量投产的批量表存在显著差异。由于检测不足,许多投入实际使用的批量表出现工作状态异常、质量不合格的情况,对这些电表的维护造成了不必要的花费。针对此问题制定了一种智能电表软件功能检测方案,设计了一种嵌入式智能电表代码逆向模型。模型以分析智能电表核心程序从而获取系统运行特征为思路,以反汇编算法分析电表固件代码功能为手段,对嵌入式智能电表进行软件功能差异测试。模型包括固件代码提取、固件代码反汇编和软件功能比较三大模块,在反汇编模块中基于现有的线性扫描和递归遍历算法使用了一种改进的单步扫描算法(sda)。实际应用时对智能电表批量产品和样品进行比较鉴别,对系统功能的差异测量效果明显;同时使用该模型在维护电力企业已使用电表时可控制拟投产电表与已使用电表功能和质量误差在±20%范围内。
大型矩阵相乘并行计算的特性分析
Performance Analysis of Large Scale Parallel Matrix Multiplication
 [PDF]

尚智,
Software Engineering and Applications (SEA) , 2013, DOI: 10.12677/SEA.2013.21003
Abstract:

随着科学研究和工程计算的发展,大规模计算和模拟已经无法避免。这些大规模计算往往涉及海量数据的运算和处理,因此并行计算被用来一方面解决大规模的快速计算,另一方面解决海量数据的处理。基于MPI的并行计算可以方便地进行分布式运算,把海量数据分散在集群超级计算机上,使得每单个处理器(CPU)处理一小部分数据,从而实现快速运算和大规模计算。本文基于MPI的并行编程,实现了大规模矩阵的相乘运算,并且测试了点对点通信下的不通信机制(阻塞通信、非阻塞通信及其混合通信)的标准通信的并行性能。针对大型矩阵相乘计算,组建了完整的快速标准通信方法,并且防止死锁的发生。为今后的进一步实际应用奠定基础,提供有用的参考。
The large scale computing is difficult to be avoided following the requirement of modern scientific re- searches and practical engineering applications. The computing and processing of massive data have to be involved in these large scale computing. The parallel computing therefore is employed to solve these issues of large scale comput- ing not only on fast computing but also on data processing. MPI-based parallel computing can easily realize distributed computing and massive data scattered in the cluster supercomputer, making each a single processor to handle a small portion of data in order to achieve fast computing and large scale computing. Based on MPI parallel programming a large-scale matrix multiplication operation was developed. Through the testes on the parallel performance of the point to point communications with the blocking communication, non-blocking communication and mixed communication, a complete set of rapid communication to prevent the occurrence of deadlock was established. The results were significant for the future practical applications.

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