Construction of periodic and solitary wave solutions for the complex nonlinear evolution equations

In this paper, we present a functional variable method for finding periodic wave and solitary wave solutions of complex nonlinear evolution equations in mathematical physics and engineering sciences. The proposed technique is tested on the generalized Zakharov equation and higher-order nonlinear Schrödinger equations. The method is straightforward and concise, and it can also be applied to other nonlinear evolution equations in applied mathematics.     

A collocation method using Hermite polynomials for approximate solution of pantograph equations

In this paper, a numerical method based on polynomial approximation, using Hermite polynomial basis, to obtain the approximate solution of generalized pantograph equations with variable coefficients is presented. The technique we have used is an improved collocation method. Some numerical examples, which consist of initial conditions, are given to illustrate the reality and efficiency of the method. In addition, some numerical examples are presented to show the properties of the given method; the present method has been compared with other methods and the results are discussed.     

Method for Computing Time Response of Systems Described by Transfer Functions

A simple numerical method for computing the time domain response of linear time invariant systems described by their transfer functions is presented. The method does not require computation of transfer function poles or residues; it is not influenced by the multiplicity of poles or zeroes, nor does it require computation of the matrix exponential. Rather, it is based on a numerical method for inverting Laplace transforms. It is equivalent to very high order, absolutely stable numerical integration. Stiff systems present no problems.     

Strong similarity measures for ordered sets of documents in information retrieval

A general method is presented to construct ordered similarity measures (OS-measures), i.e., similarity measures for ordered sets of documents (as, e.g., being the result of an IR-process), based on classical, well-known similarity measures for ordinary sets (measures such as Jaccard, Dice, Cosine or overlap measures). To this extent, we first present a review of these measures and their relationships.The method given here to construct OS-measures extends the one given by Michel in a previous paper so that it becomes applicable on any pair of ordered sets. Concrete expressions of this method, applied to the classical similarity measures, are given.Some of these measures are then tested in the IR-system Profil-Doc. The engine SPIRIT^© extracts ranked document sets in three different contexts, each for 550 requests. The practical usability of the OS-measures is then discussed based on these experiments.     

Quantification of urinary urate with alkylamine glass-bound uricase and arylamine glass-bound peroxidase

Uric acid in urine was analyzed using porcine liver uricase and horseradish peroxidase immobilized on alkylamine and arylamine glass beads (pore diameter 55nm) respectively. The minimum detection limit was 5.0mg/0.1 ml urine. The recovery of added uric acid was 92%. Within and between assay CVS were <1.3% and <5.3% respectively. A good correlation (r=0.93) was found between urinary urate values obtained by a commercial kit method and the present method. The uric acid in 24hr urine of apparently healthy adults and person sufering from various diseases was found to be 450 to 900mg/24hr, 659mg/24hr (range, mean) and 910–1400mg/24hr, 1145 mg/24hr (range, mean) respectively with the present method.     

Recurrent neural dynamics for handling linear equation system with rank-deficient coefficient and disturbance existence

In this paper, for handling discrete-form time-variant linear equation system (DF-TV-LES) with rank-deficient coefficient and disturbance existence, a luminous discrete-time recurrent neural dynamics (DTRND) method is presented. Firstly, the continuous-time recurrent neural dynamics (CTRND) method can be discretized to the DTRND method by using recently-developed 5-instant discretization formula. Secondly, aiming at the situations of rank-deficient coefficient and disturbance existence, corresponding handling methods are presented, respectively. Specifically, on the one hand, under the situation of rank-deficient coefficient, we present an effective method to compute the least-squares solution of DF-TV-LES; on the other hand, under the situation of disturbance existence, integral state of error function is introduced, and then the presented DTRND method possesses a certain performance for restraining different types of disturbances. Finally, comparative numerical experiment substantiates the superiority of the presented DTRND method for handling DF-TV-LES.     

高校突发事件应急管理执行能力的评价

突发事件应急管理是当前高校管理的一个重要方面,为进一步提高和完善高校应急管理的水平,对高校应急管理执行能力的量化评价就显得非常重要。首先分析了高校突发事件应急管理执行能力评价的重要性;然后在模糊评价方法的基础上,提出了基于专家群评价的模糊综合评价方法,通过校正一补偿评价法把专家对高校突发事件应急管理执行能力的评价和对专家评价水平的评价综合起来,最后通过实例说明了这种方法在高校突发事件应急管理执行能力中的具体应用,并对结果进行了分析和讨论。为量化评价高校突发事件应急管理能力提供了一种思路和方法。     

组合预测模型及应用

通过主成分分析的方法，将非线性预测中的二次多项式预测、指数预测及灰色预测等3种不同的预测方法组合在一起．提出了一种新的组合预测方法，并利用该方法对江西省的国民生产总值进行了预测。     

Modification of Jaffe’s kinetic method decreases bilirubin interference: A preliminary report

The negative interference of bilirubin on serum creatinine determined by the kinetic alkaline picrate (Jaffe) reaction is the unresolved problem. Though high performance liquid chromatography and gas chromatography with mass spectroscopy have been proposed to be gold standards for creatinine estimation but they are not readily available in most of the clinical chemistry laboratories due to economic and technical constraints. Most of the present day analyzers use Jaffe’s kinetic method without deproteinization. Though enzymatic methods are now routinely used as most accurate method but they are not acceptable due to cost constraints. Hence this study was planned to find out a possible solution to the problem of bilirubin interference by a minor modification in the commonly used Jaffe method so that it is amenable for use on the currently used analyzers.     

城市宗地集约利用潜力评价方法研究

城市土地集约利用潜力评价的目的是在城市存量土地的基础上,对现状土地利用状况进行综合分析和评价,测算城市土地利用的潜在增加面积.城市土地利用宗地集约利用潜力评价属城市土地集约利用潜力评价的微观评价.本文在济南市城区研究实践的基础上,提出了宗地集约利用潜力评价的"理想值修正模型".该模型以土地集约利用的标准值(合理值)为判定依据,选择土地用途、建筑密度、建筑容积率和其他因素对标准值进行修正,分析具体宗地的现状和理想值(合理值)之间的关系,计算宗地集约利用潜力等级.该方法计算的结果与用地功能区评价的结果进行了对比:工业区的评价结果出入较大,大部分宗地评价结果修正后提高,即其潜力增加;商业区的结果大部分降低,即潜力减少;住宅区处于二者之间,但潜力增加的量大于商业.基本结论是:城市建成区宗地集约利用潜力评价模型,简便、实用、科学,是不同用地功能区集约利用潜力评价的具体化;可作为城市规划、盘活存量土地、提高城市土地利用效率等的主要技术支持.     

基于熵权物元分析的科技成果评价模型及应用

通过总结与比较现有科技成果评价方法,提出一种将熵权与物元分析模型相结合的科技成果评价模型。该模型采用熵权法对评价指标进行客观赋权,避免了主观因素的影响;此外,采用物元分析法构建科技成果评价模型,解决了科技成果专家评议模糊性结果的合成问题。实证分析表明,该模型应用于科技成果评价具有实用性和可操作性。     

基于改进灰关联分析的多层次综合风险评价模型研究

针对现有指标权重确定过程中很少考虑指标之间相互关联性这一不足,利用灰色系统理论给出了一种确定各指标权重的新方法,建立了一种新的基于改进灰色关联分析的多层次综合评价模型。将此模型应用于风险投资项目综合评价的结果表明,该模型具有一定可操作性和实用性。     

1951年至2010年北京市降水和气温的变化特征

根据北京市1951年-2010年的降水和气温数据资料,综合运用滑动平均法、Mann-Kendall检验、Hurst指数法、GM（1,1）模型等方法,从不同时间尺度和层面上分析北京市降水和气温变化的规律以及未来的趋势特征。结果表明：北京市降水的72.5%集中在夏季,7月份的降水最多,12月份最少;极端降水指标中的1日最大降水量、极端强降水日数、极端强降水比率、最长连续无降水天数呈不同程度的递减趋势,零降水日数以2d/10a的速率递增;北京市历年的降水量以44.3mm/10a的速率递减,1994年为降水的突变年份,未来的降水整体上呈增加趋势,北京市下一次旱灾大致指向2028年-2029年左右;北京市历年的平均气温、平均最高气温和平均最低气温呈不同程度的增加趋势,平均最低气温的增加趋势最为显著,平均气温和平均最低气温的突变年份都是1989年,而平均最高气温的突变年份为1993年-1994年和1996年,三者未来整体上都呈增加趋势,而平均最低气温的增加趋势最为显著。     

A deterministic resampling method using overlapping document clusters for pseudo-relevance feedback

Typical pseudo-relevance feedback methods assume the top-retrieved documents are relevant and use these pseudo-relevant documents to expand terms. The initial retrieval set can, however, contain a great deal of noise. In this paper, we present a cluster-based resampling method to select novel pseudo-relevant documents based on Lavrenko’s relevance model approach. The main idea is to use overlapping clusters to find dominant documents for the initial retrieval set, and to repeatedly use these documents to emphasize the core topics of a query.     

Evidential fine-grained event localization using Twitter

The widespread popularity and worldwide application of social networks have raised interest in the analysis of content created on the networks. One such analytical application and aspect of social networks, including Twitter, is identifying the location of various political and social events, natural disasters and so on. The present study focuses on the localization of traffic accidents. Outdated and inaccurate information in user profiles, the absence of location data in tweet texts, and the limited number of geotagged posts are among the challenges tackled by location estimation. Adopting the Dempster–Shafer Evidence Theory, the present study estimates the location of accidents using a combination of user profiles, tweet texts, and the place attachments in tweets. The results indicate improved performance regarding error distance and average error distance compared to previously developed methods. The proposed method in this study resulted in a reduced error distance of 26%.     

“卫生管理运筹学”教学改革研究

“卫生管理运筹学”是卫生事业管理专业的一门重要课程,目前其教学过程以理论教学为主,忽略了其重要的应用特色。该文以提高学生运用运筹学知识解决现实问题的能力为目的,从教学引导、教学方法、考核方式及教学团队建设等方面提出了以下具体的教学改革措施:(1)以现实问题为导向,激发学生的学习兴趣。(2)学用结合,培养学生使用运筹学软件解决问题的能力。(3)优化教学内容,提升教学效果。(4)完善考核方式,提高学生分析问题和解决问题的能力。(5)加强教学团队建设,形成教学合力。     

A new method for performance evaluation of bit decoding algorithms using statistics of the log likelihood ratio

This paper presents a new method for the performance evaluation of bit decoding algorithms. The method is based on estimating the probability density function (pdf) of the bit log likelihood ratio (LLR) by using an exponential model. It is widely known that the pdf of the bit LLR is close to the normal density. The proposed approach takes advantage of this property to present an efficient algorithm for the pdf estimation. The moment matching method is combined with the maximum entropy principle to estimate the underlying parameters. We present a simple method for computing the probabilities of the point estimates for the estimated parameters, as well as for the bit error rate. The corresponding results are used to compute the number of samples that are required for a given precision of the estimated values. It is demonstrated that this method requires significantly fewer samples as compared to the conventional Monte-Carlo simulation.     

An atmospheric dust recorder

An apparatus is described for recording general atmospheric dust. The full-scale range of the present model of approximately 120 × 10⁶ particles per cubic foot of air may be increased or decreased as desired. The dust concentrations measured are far below smoke concentrations. The method is to impinge dust on a slowly moving strip of transparent film, and to measure the deposit by a comparison of two beams of light, one passing through the dusty film, the other through clean film. The decrease in transmitted light due to the dust is balanced automatically by a motor-driven optical wedge in the unobstructed beam. The position of this wedge is recorded on a chart. Dusty air is sampled continuously for long periods. Rapid fluctuations of a few minutes in length are registered. In this, and in the fact that it is direct-reading, without tedious laboratory quantitation, the recorder offers distinct advantages over the present dust determinators, almost all of which take momentary samples. A different calibration is needed for different dusts. The machine may be adapted to laboratory or field use. In factories, auxiliary blowers may be operated through relays, when the dustiness exceeds a specified level.     

基于TRIZ理论的创造性辅助判断法——“矛盾法”探析

针对现有创造性判断的局限性,基于TRIZ理论提出一种新的创造性辅助判断法——"矛盾法"。该方法首先确定最接近现有技术,之后基于与最接近现有技术的区别来确定发明解决的技术矛盾,然后通过TRIZ工具来分析本发明解决该技术矛盾所用到的发明原理,最后根据所确定的发明原理、技术矛盾和技术手段判断本申请是否具有创造性。通过理论分析和实际案例论述"矛盾法"的可行性以及优缺点。认为"矛盾法"可在一定程度上增强创造性判断的客观性,其可作为现有创造性判断方法的补充。     

Solution of the two-dimensional heat equation for a square in terms of elliptic functions

In this study, an alternative method is presented for the solution of two-dimensional heat equation in a square region. In this method, the solution function of the problem is based on the Green function, and therefore on elliptic functions. The numerical results have been computed for an application example and compared with the results of the well-known method of separation of variables and the finite elements method. The comparison study shows that the present method gives better results than those of the other methods.