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Evolutionary generation of test data for many paths coverage

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Evolutionary generation of test data for many paths coverage

2.10 Chinese Control and Decision Conference

作者： Wan-qiu Zhang~1,Dun-wei Gong~1,Xiang-juan Yao~(1,2.,Yan Zhang~(1,3) 1.school of Information and Electrical engineering,{2. university of Mining and Technology,Xuzhou,2.1116,{2. 2.College of sciences,{2. university of Mining and Technology,Xuzhou,2.1116,{2. 3.Department of Computer science and Technology,Mudanjiang Normal university,Mudanjiang,Heilongjiang 157012.{2.

＜正＞Generation of test data for path coverage is an important issue of software testing,but previous methods are only suitable for the case that a program only has a small number of *** focus on the problem of generating test data for many paths coverage in this paper,and present a method of evolutionary generation of test data for many paths ***,target paths are divided into several groups based on their similarity,and each group forms a sub-optimization problem,which transforms a complicated optimization problem into several simpler sub-optimization problems;then a domain-based fitness is designed when genetic algorithms are employed to solve these problems;finally,these sub-optimization problems are simplified along with the process of generating test data,hence improving the efficiency of generating test *** method is applied in 2.benchmark programs,and compared with some previous *** experimental results show that our method has advantage in time-consumption and the number of uncovered target paths. Our achievement provides an efficient way for generating test data of complicated software.

关键词： software testing many paths coverage test data genetic algorithms grouping

Leakage Detection of Pipelines Underground by Using Infrared Detector

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Leakage Detection of Pipelines Underground by Using Infrared...

2.04安全科学与技术国际会议

作者： CHEN Shuwang1 2.& WANG Mingshi1 (1 school of Precision Instruments and Optic-electronics engineering Tianjin {2. Tianjin 300072.china) (2.Department of Information Sci & Tech Hebei {2. of science & Technology Shijiazhuang 050054 Hebei china)

It is difficult to examine the situation of the oil pipelines underground. Once the leakage of the oil pipelines occurs, it will be dangerous to the environment. In order to ensure the quick detection

关键词： pipeline underground infrared leakage detection oil safety

Adaptive Control for Real-time Computing System

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Adaptive Control for Real-time Computing System

第二十六届中国控制会议

作者： Chen Yi1,2.Gao Ge1,Liu Hao3 1.National engineering Research Center for Multimedia Software,Wuhan university,Wuhan,Hubei 430072.P.R.{2.2.Department of Computer science,Central china Normal university,Wuhan,Hubei 430079,P.R.{2.3.school of Info science.& Tech.,Southwest Jiaotong university,Chengdu 610031,P.R.{2.

There may be great degradation in service level management（e.g.,an email server）due to dynamical variants of real systems and measured disturbance in the *** adaptive predictive congestion control is presented for service sys-tems to prevent oscillation and delay induced by highly stochastic behaviors of computing system which can not be got rid of by conventional *** analyze the controller in detail and prove the error can be reduced to zero in steady *** ef-fectiveness of the proposed methods is demonstrated by the simulation results.

关键词： Admission control Adaptive control Computing systems

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计量逻辑学中的收敛理论

计算机工程与应用 2009年第30期45卷 4-5,12页

作者：韩邦合李永明陕西师范大学数学与信息科学学院西安710062 西安电子科技大学理学院数科系西安710126 陕西师范大学计算机科学学院西安710062

初步给出了计量逻辑学中的收敛理论。提出了逻辑度量空间中的度量收敛,赋值收敛和网收敛概念,对它们做出刻画并初步论证了它们之间的关系。

关键词：真度相似度伪度量度量收敛赋值收敛网收敛计量逻辑学近似推理

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内P-集合与数据外-恢复

山东大学学报（理学版） 2009年第4期44卷 8-14页

作者：史开泉张丽山东大学数学学院山东济南250100

内P-集合是P-集合的一个部分,它是P-集合的一个概念。利用内P-集合,提出-F-数据与-F-数据外-恢复概念,给出-F-数据外-恢复定理,外-恢复的属性补充冗余原理,利用这些结果给出应用。

关键词：内P-集合 F-正数据数据外-恢复外-恢复定理属性补充冗余原理

Spatial Variability of Soil Saturated Hydraulic Conductivity in a Small Watershed of Loess Hilly Region,china

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Chinese Forestry science and Technology 2008年第2期7卷 41-48页

作者： SHI Hui1 WANG Feng2.1. school of Environmental and Municipal engineering, Xi’an {2. of Architecture and Technology Xi’an 710055, P. R. china 2. Sichuan Forestry Institute of Surveying and Planning, Chengdu 610081, P. R. china

Saturated hydraulic conductivity (Ks) is an important soil hydraulic parameter for charactering the rate of water flow across the soils and is mainly related to its high spatial variability. In a small watershed with the area of 0.2. km2.in the Loess Plateau, Ks of 197 soil samples under different vegetations and landforms were measured. Ks had a moderate variability for total samples. The forestland had high Ks with low coefficient of variation (CV), but the grassland in the watershed bottom had low Ks with big CV. Ks had moderate correlation in space distribution and combined both structural and random factors. At the N-S and E-W directions of watershed being parallel and normal to the stream valley, Ks had relatively weak correlation, indicating that the random factor was the dominate reason causing spatial variance. At the NE-SW and SE-NW directions, Ks had relatively strong correlation due to structural factors such as geomorphology and vegetation distribution patterns. Kriging optimal estimation method was used to produce Ks contour map. The Kriging standard deviation (SD) was the lowest near the sampling points, and increased along with the distance to sampling points. In the Loess Plateau region, soil texture is relatively even, and the vegetation distribution pattern was the key factor affecting spatial variability of Ks.

关键词： saturated hydraulic conductivity (Ks) spatial variability vegetation distribution pattern

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CAS密封吹氩精炼终点钢水温度的预报模型

特殊钢 2005年第1期26卷 19-20页

作者：田建国江苏大学材料科学与工程学院镇江212013

采用多元回归分析建立了 30 0tCAS精炼 (密封吹氩调整成分 )终点钢水温度 T钢包 ℃的预测模型 :T钢包 =t - (- 92.0 6 4 +0 .0 6 4 36 2.5x1 +0 .18716 2.2.+0 .5 812.93t +0 .0 0 36 6 2.3) ,式中x1 钢水搁置时间 min ;x2. 精炼处... 详细信息

采用多元回归分析建立了 30 0tCAS精炼 (密封吹氩调整成分 )终点钢水温度 T钢包 ℃的预测模型 :T钢包 =t - (- 92.0 6 4 +0 .0 6 4 36 2.5x1 +0 .18716 2.2.+0 .5 812.93t +0 .0 0 36 6 2.3) ,式中x1 钢水搁置时间 min ;x2. 精炼处理时间 min ;x3 合金加入量 kg ,t 处理开始钢水温度 ℃。对预测温度统计分析结果表明 ,该模型对CAS精炼终点温度的预测误差在± 5℃和± 10℃时的命中率分别为 87%和 95 %。

关键词：钢水温度吹氩精炼处理钢包终点测温加入量合金预报模型密封

The Scheme and Key Components Design of W-band Coherent Doppler Velocity Radar Front-end

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The Scheme and Key Components Design of W-band Coherent Dopp...

2.07 7th International Conference on ASIC Electronic Version(ASICON 2.07)

作者： Fan Yang Xiao-Hong Tang Tao Wu school of Electronic engineering {2. of Electronic science and Technology of china Chengdu 610054

This paper presents a scheme of W-band coherent Doppler velocity radar front-end,which can be used to measure the velocity of target ranging from 10m/s to 2.00m/*** the comparison of the advantage and disadvantage of several schemes,the scheme using the phase-locked dielectric resonator oscillator（PLDRO） and direct digital synthesis（DDS） is *** two coherent X-band signals are produced by mixer and power-divider mechanism of the PLDRO and ***,transmitting signal and receiver LO is obtained by the 8th-order multiplier from the two X-band *** superheterodyne receiver is adopted to increase the system signal-to-noise ratio（SNR）.The finished key components have good performance,indicating that the scheme increases the sensitivity and the resolution of the radar.

关键词： millimeter-wave front-end Doppler frequency coherent transceiver superheterodyne receiver PLDRO DDS

An Indexed Non-Equijoin Algorithm Based on Sliding Windows over Data Streams

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Wuhan university Journal of Natural sciences 2006年第1期11卷 294-298页

作者： YU Ya-xin YANG Xing-hua YU Ge WU Shan-shan school of Computer science and {2. Northeastern University Shenyang 110004 Liaoning China

Processing a join over unbounded input streams requires unbounded memory, since every tuple in one infinite stream must be compared with every tuple in the other. In fact, most join queries over unbounded input streams are restricted to finite memory due to sliding window constraints. So far, non-indexed and indexed stream equijoin algorithms based on sliding windows have been proposed in many literatures. However, none of them takes non-equijoin into consideration. In many eases, non-equijoin queries occur frequently. Hence, it is worth to discuss how to process non-equijoin queries effectively and efficiently. In this paper, we propose an indexed join algorithm for supporting non-equijoin queries. The experimental results show that our indexed non-equijoin techniques are more efficient than those without index.

关键词： non-equijoin data stream sliding window red-black indexing tree