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Comparing the run_time between insertion sort and quicksort shows insertion sort gives better performance when the given data sequence is in ascending order. For the nearly sorted list, whether insertion sort performs better than quicksort depends on the size of the list and the number of randomly ordered items. Compared to the insertion sort, the results show quicksort yields shorter run_time if the list is in descending or random order. The main drawback of quicksort is the worst case behavior of O(n2) comparisons when the list is in ascending or descending order. It has been shown that quicksort also performs poorly for nearly sorted list.

通过插入排序和快速排序执行时间比较显示:当序列以递增次序排列时,插入排序的表现比快速排序好;对于基本有序序列,插入排序算法是否比快速排序算法好取决于序列的大小和基本有序序列中随机分布元素的多少;对于递减和随机序列,快速排序的运行时间比插入排序好。

The boundary value problem for first-order differential equations with a parameter refers to the finite solution condition of equation which includes unknown quantity and its first-order derivative that not only relies on interval value but also relies on the parameter of the equation,which is always settled by fixed point theory or successive approximation method.

含一个参数的一阶微分方程边值问题是指:含有未知量及它的一阶导数的方程的定解条件不仅依赖于在区间端点的取值,而且依赖于方程中的参数。通常它用不动点定理或逐步逼近法来解决。

The main results of the study are obtained as follows:1 In order to analyze and study the physical and mechanical characteristics of Lianyungang marine soft clay deeply, large numbers of basic mechanical characteristics tests and tri-axial shear tests are completed.2 In order to investigate the loaded and failure characteristics of the cement-soil, the cement-soils for the different ratio and different cure time are studied in the laboratory, and their unconfined compression tests and tri-axial shear tests are performed.3 Based on the solution of one-dimension consolidation, the one-dimension consolidation of the double-layered foundation is solved for two-grade loading in virtue of transcendental equation; Simultaneously, the one-dimension consolidation of the double-layered foundation is solved by means of Laplace transform for two-grade loading, and Stehfest numerical transform is applied in Laplace's inverse transformation; Furthermore, according to the practical foundation shapes, the consolidation models of the soil between piles and the substratum are built and solved respectively.4 The effect of each parameters on the consolidation of the double-layered foundation is discussed, and the solution of load transfer method for double-layered foundation is applied in A1-A4 section of Lian-Xu expressway. The results of calculating settlement of the double-layered consolidation theory are basic agreement with the measuring settlement results.

取得了以下几方面的研究成果:1针对连云港海相软土进行一维固结和三轴剪切试验,深入分析连云港海相软土的物理力学特性。2模拟水泥土搅拌桩施工,在室内制备不同配比、不同龄期的水泥土试样,并进行无侧限抗压试验和三轴剪切试验,揭示水泥土的受力特性及破坏特性。3运用超越方程,以双层地基一维固结解析解为基础,推导出二级加荷条件下双层地基的固结解析解;同时,通过荷载传递法并借助Laplace变换对双层地基的固结问题进行了数值求解;此外,根据实际的地基结构,建立了桩间土和下卧层的固结模型并分别进行求解分析。4分析探讨了双层地基中各参数对双层地基固结的影响程度,并运用荷载传递法的解答计算了连-徐高速公路A1-A4标水泥土搅拌桩处理段的六个断面,计算结果与实测数据有较好的一致性。

Each of the other third-order sequences can be further divided into three system tracts. Based on the identification and correlation of sequence stratigraphic units, and researches on the history of structural evolution, the thickness of sequences and the paleotopography of the area, we proposed the sequence stratigraphical mode of the studied area, and discussed the relations between the sequence stratigraphic model and the oil-gas potentials and estimated the oil-gas potentials of each of the third-order sequences.

针对研究区目的层段所划层序发育的特点,在层序地层单元划分和对比的基础上,结合构造发育史和地层厚度的变化反映出古地形特征,建立了该区的层序地层学模式,并初步探讨了层序地层学模式与含油气性的关系,对各三级层序的含油性做出了初步预测。

In this thesis,the AM1,MNDO,MINDO/3(mainly AM1)and INDO/S-CI semiempirical MO methods were used toinvestigate the excited-state intramolecular protontransfer reactions of salicylic acid derivatives—salicylic acid,methyl salicylate,salicylaldehyde,o-hydroxyaceto-phenone,salicylamide and 3-hydroxy-picolinamide (6 conformers and 2-3 anion species);2-(2'-hydroxy-5' methylphenyl) benzotriazole(4 conformers),2-(2' hydroxyphenyl) benzimidazole (3 conformers and 3anion species),Bis-2,5-(2-benzoxazolyl)hydroquinone(3 conformers),2-(2'-hydroxyphenyl)benzothiazole(2conformers) and 7-azaindole dimer (2 conformers).Theinvestigations were described as follows.Geometry optimization,relative stability andhydrogen bonding energy First,for sylicylic acid derivative molecules,the AM1,MNDO and MINDO/3 methods were used toinvestigate ground-state geometry optimization,energies,relative stabilities and hydrogen-bondingenergies on the five kinds of the molecules(designing 6 conformers and 2-3 anion species).Comparing with experimental data,the optimizedgeometry,the order of stability,the hydrogen-bonding energies and the distances between O-O in O-H..O hydrogen bonds by AM1 method were in agreementwith the experimental data,however,the C-C bondlengths optimized by MNDO and MINDO/3 were longer,C-O and O-H bond lengths were shorter;for C-N bondlengths,the results opitimized by MNDO method werethe same as those by AM1 method,nevertheless the C-Nbond lengths given by MINDO/3 method were muchshorter.For some sylicylic acid derivatives(e.g.methyl salicylate,salicylamide),the order ofstabilities on the conformers given by MNDO andMINDO/3 methods were not in agreement with theexisting conformers deduced by experimental methods,and the hydrogen bonding energies calculated by MNDO.and MINDO/3 methods were smaller.Second,the studyon the other systems found that the optimizedgeometry of the proton-transfered product with INDOmethod could not be obtained,only could theoptimized geometry of reactant be obtained,and thecalculated hydrogen bonding energies were greater.Many results of calculation indicated that the studyon the excited-state intramolecular proton transferreaction system using AM1 method was suitable andreliable.

本论文用AM1、MNDO、MINDO/3(主要是AM1)和INDO/S-CI半经验分子轨道方法对水杨酸衍生物系列——水杨酸、水杨酸甲酯、水杨醛、O-羟基乙酰苯酮、水杨酰胺和3-羟基吡啶酰胺(6种异构体和2-3种阴离子);2-(2'-羟基-5'-甲基苯基)苯并三〓唑(4种异构体);2-(2'-羟基苯基)苯并咪唑(3种异构体和3种阴离子);2,5-二间氮杂氧茚氢醌(3种异构体);2-(2'-羟基苯基)间〓杂硫茚(2种异构体)和7-〓吲哚二体(2种异构体)的激发态分子内质子转移反应在以下几个方面进行了较系统的理论研究:几何构型优化和相对稳定性及氢键能首先以水杨酸衍生物系列分子为例,用AM1、MNDO和MINDO/3方法考察了5种分子(每种分子设计6种异构体和2-3种阴离子)的基态几何构型优化,能量、相对稳定性和氢键能计算,通过和实验数据进行比较,AM1方法给出的优化几何构型、稳定性次序、氢键能和O—H。。。O氢键的0—0距离与实验数据吻合最好,MNDO和MINDO/3方法优化的C-C键长偏长,C-O键和O-H键长偏短;对于C-N键长,MNDO和AM1优化结果差别不大,而MINDO/3给出了过短的C-N键长,MNDO和MINDO/3方法给出的有些水杨酸衍生物分子(如水杨酸甲酯和水杨酰胺)异构体的稳定性次序和实验上推测的可存在异构体结果不一致,MNDO和MINDO/3方法给出的氢键能偏低,对其他体系的研究发现INDO方法常常不能得到质子转移产物的优化几何构型,只能得到反应物的优化构型,并且估算的氢键能偏高,大量的计算结果表明AM1方法对本论文研究的激发态分子内质子转移反应体系是适宜和可靠的。

The study showed that the biosorption process could be described well by pseudo-second-order kinetic model and Freundlich isotherm model.Higher cell concentration was favorable to the biosorption.Temperature's effect on the biosorption was not obvious.The oxygenous and nitrogenous functional groups on the cell wall played a very important role in the process of biosorption.Microdeposits were formed by int...

结果表明,菌体对银的吸附量可达91.75 mg/g,吸附过程符合Pseudo-second Order吸附动力学模型,相关系数高达0.999 9;吸附热力学很好地符合Freundlich吸附等温模型,相关系数为0.99;考察菌体浓度和温度对吸附的影响发现,菌体浓度增加有利于对银离子的吸附,温度对吸附影响较小;FTIR、SEM及EDAX实验结果表明吸附存在2种吸附机理,一为菌体表面一些含氮氧的基团对Ag+的络合作用,二为菌体分泌的胞外多糖等物质对Ag+的微沉淀成晶作用。

In my opinion,there exist two problems in the current study on the order:first,the order iscomprehended parochially;second,the reason is interrogated unfairly andeven the positive function of the reason in the order is denied unreasonably.

在当前的秩序研究中存在着两个问题:一是对秩序的狭隘理解;二是以追求自由秩序的名义诘难&理性&,甚至否定理性在秩序中的积极作用。

On the basis of the summarization and review on the researches and developments of the third-order optical nonlinear materials, the third-order optical nonlinearities of poly(l,4-phenylene vinylene) derivatives and metalloorganic compounds as well as the optical switching effects of poly(l,4-phenylene vinylene) derivatives are investigated.

在总结和回顾前人对三阶非线性光学材料研究的基础上,合成并研究了聚(1,4-苯亚乙烯)及其衍生物以及金属有机化合物的三阶光学非线性,同时对PPV及其衍生物的光开关特性进行了初步研究。

Asked about the specific schedules and prices of freight forwarding, according to the completion of goods, decide on the specific schedules, fill in the consignment note (BOOKING ORDER, also called the booking) to the freight forwarding, and then, and freight forwarding to confirm whether receive the consignment note, if it is consolidation, freight forwarding after receipt of booking Jincang fax you a notice, you can put the above information on time shipping to the warehouse; if it is the entire cabinet, and other freight to get Class and you will be confirmed after the loading time and address.

询问货代具体的船期和价格,根据货物的完成时间决定具体船期,填写托运单(BOOKING ORDER,也叫订舱单给货代,然后和货代确认是否收到托运单,如果是拼箱,货代收到订舱单后会传真你一份进仓通知书,你可以根据上面的信息按时把货运到仓库;如果是整柜,等货代拿到舱位后会和你确认装货时间,地址等。

Adaptive Vold-Kalman order tracking was carried out based on the algorithm of STFT_VA. In contrast with traditional method of Vold-Kalman order tracking, the method includes some advantages, for example, tacho and other hardwares are not necessary to be employed to do order tracking.

实现了基于STFT-VA算法的自适应Vold-Kalman阶比跟踪,和传统的以硬件实现的Vold-Kalman阶比跟踪相比,此方法具有无需转速计等硬件、用纯软件的方法实现。

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