无底柱加大间距采矿地压状况分析

通过对使用大间柱采矿法的矿山地压进行监测 ,发现采用大间柱采矿法是安全的、可行的 ,它改善了矿山地压状况 ,减少了采矿成本 ,有着巨大的经济效益和社会效益。

大间距无底柱分段崩落法采矿地压分析

通过对使用大间柱采矿法的矿山地压进行监测,发现采用大间柱采矿法是安全的、可行的,它改善了矿山地压状况,减少了采矿成本,有着巨大的经济效益和社会效益。

日本青森县大间町“天妃样行列”的调查研究

本文根据笔者对青森县大间町举行的"大渔祈愿祭"及"天妃样行列"的最新实地调查资料,在先行研究的基础上,探讨神道教与妈祖信仰的融合,以及在日本作为海神所具有的原本特性的妈祖信仰的实际状况,并分析妈祖信仰文化对大间妈祖信仰传承和振兴当地经济发展促进作用,进而,本文指出要继续深入开展中国民间信仰与日本民间信仰的调查、研究十分重要。

米槐大换头、大间伐、大改形技术

米槐是一个新兴的旱垣特色经济林品种。目前槐园初植密度过大,槐米芦丁含量偏低,是困扰米槐产业的发展的重要原因,从槐米特性和改造技术方面介绍了米槐大间伐、大改形、大换头技术。

Vehicle routing optimization algorithm based on time windows and dynamic demand

To provide the supplier with the minimizum vehicle travel distance in the distribution process of goods in three situations of new customer demand,customer cancellation service,and change of customer delivery address,based on the ideas of pre-optimization and real-time optimization,a two-stage planning model of dynamic demand based vehicle routing problem with time windows was established.At the pre-optimization stage,an improved genetic algorithm was used to obtain the pre-optimized distribution route,a large-scale neighborhood search method was integrated into the mutation operation to improve the local optimization performance of the genetic algorithm,and a variety of operators were introduced to expand the search space of neighborhood solutions;At the real-time optimization stage,a periodic optimization strategy was adopted to transform a complex dynamic problem into several static problems,and four neighborhood search operators were used to quickly adjust the route.Two different scale examples were designed for experiments.It is proved that the algorithm can plan the better route,and adjust the distribution route in time under the real-time constraints.Therefore,the proposed algorithm can provide theoretical guidance for suppliers to solve the dynamic demand based vehicle routing problem.

单层大空间建筑内防火隔离带设计与计算

独立的可燃物岛是在建筑内部将可燃物集中布置。本文基于科学设置相邻可燃物岛的间距以阻止火灾蔓延的思想,建立了单层大空间建筑内防火隔离带理论模型,并利用FDS场模型对热烟气层温度变化进行了模拟计算,得到了热烟气层最高温度Ts,进而计算得到防火隔离带的宽度。研究结果表明:火源功率是影响防火隔离带的主要因素,对于单层大空间建筑火灾(最大功率为25MW),10.2m宽的防火隔离带可以有效地阻止火灾蔓延;在火源功率确定的前提下,热烟气层对可燃物的热辐射远小于火焰对可燃物的直接热辐射。

基于双鸟群混沌优化的otsu图像分割算法

为了提高鸟群图像分割算法在求取图像最佳阈值时的准确性与稳定性,提出了一种双鸟群混沌优化图像分割算法.在求取图像二维otsu阈值时对两个种群求得的二维解进行交叉互换,并加入混沌扰动,加强了搜索能力.为了减少噪声对图像分割结果的影响,使用一种改进的自适应选择中值-均值滤波法对图像进行预处理,增强了图像分割时对噪声的鲁棒性.实验结果表明双鸟群混沌优化图像分割算法在求取一维、二维otsu阈值时的准确度和稳定性要优于其他算法,且无论在低噪声污染还是高噪声污染下都能对图像进行较为准确的分割.

基于遗传变异的鸟群图像分割算法

为避免鸟群算法在求取阈值时陷入早熟和局部优化,提出一种基于遗传变异的鸟群图像分割算法。在鸟群算法每一次迭代后加入遗传算法中的选择与变异,使算法加强在当前最优解附近的局部搜索能力,有效避免陷入局部最优解;针对噪声污染提出了"定位-中值-高斯平滑"滤波器对噪声污染图像进行预处理;将遗传算法、双种群遗传的算法、鸟群算法、遗传变异鸟群算法对图像进行分割的结果进行对比,以最大间类方差法(otsu)作为适合度函数。实验结果表明,遗传变异鸟群算法在寻找最优的解时的准确性和稳定性优于其它算法,对噪声有较强的鲁棒性。

基于云遗传算法的阈值图像分割法

提出了一种基于云遗传算法的阈值图像分割法.该算法将图像分割最佳阈值选取问题转化为遗传算法的寻优问题,根据正态隶属云期望曲线方程的特点将云模型引入遗传算法中,采用X条件云发生器算法产生交叉概率和变异概率,避免在寻找最佳阈值的过程中陷入局部最优解.实验结果表明,该算法在收敛速度有很大提高,且得到的阈值范围相比于传统遗传算法更加稳定.

Analysis on Waxy Corn/Soybean Intercropping Pattern and Economic Benefit

The research mainly analyzed effects of waxy corn/soybean intercropping on yields of the two crops, as well as agronomic characters, and the economic benefits of the mode. The results showed that although yields of waxy corn and soybean went down by 21.19% and 31.04% per unit area, land equivalent ratio（1.48） kept higher than 1, suggesting the intercropping improves land use rate. Besides, due to the practice of intercropping, many characters of waxy corn grew, but of soybean declined. The economic benefits from high to low were waxy corn/soybean intercropping, monoculture of waxy corn, and monoculture of soybean.

QTL Analysis of Agronomic Traits in Soybean

[Objective]The aim was to analyze QTL of agronomic traits in soybean and provide reference for a discussion on soybean genetic mechanism and genetic breeding. [Method]The composite interval mapping method was used for QTL location and genetic effects analysis on 5 quantitative traits including protein content,fat content,yield,100-grain weight and growth period. [Result]The control of these traits 4,4,1,2,5,a total of 16 QTL loci was detected. The genetic contribution rate was in 7.4%-33.7%,among which,a large main-effect QTL of the genetic contribution rate were located in linkage group I Satt562-Sat_219,Sat_219-Satt496,Sat_219-Satt496 interval of the three control protein content QTL sites,their genetic contribution rates were 29.15%,33.7 % and 31.67% respectively,all from the female parent Hefeng 25 plus minor gene; still in O linkage group Satt477-Satt331,Satt331-Satt153 interval of two control growing period QTL loci,their genetic contribution rates were up to 24.69% and 24.96%,also from the female parent Hefeng 25 plus minor gene. In addition,six QTL sites from M linkage group Satt175 （protein）,A1 linkage group Satt684 （oil）,F linkage group Satt348 （oil）,J linkage group Sat_412 （oil）,C1 linkage group Sat_416 （100-grain weight） and C1 linkage group Sat_416 （growth period） marks only 0.01 cm were detected. [Conclusion]QTL sites which had effects on the 5 important agronomic traits in soybean were located.

基于自适应几何阈值的SUSAN算法改进

传统的SUSAN算法用于边缘检测时采用固定几何阈值来计算边缘响应,得到的边缘线会较粗,也会出现漏检的情况。为此,在传统SUSAN算法的基础上研究改进,提出结合最大间类方差法来获得自适应几何阈值,从而对原SUSAN边缘检测算法进行改进。每幅图片根据最大间类方差法自适应获得3个几何阈值,多重阈值将图像分割成若干区域,再对各区域点进行分类和合并来获取边缘点集。实验结果表明,该边缘检测算法能够提高原来SUSAN边缘检测的精度,检测到的边缘细窄平滑,并具有更好的抗噪性。

Novel operating theatre scheduling method based on estimation of distribution algorithm

In order to improve the efficiency of operating rooms,reduce the costs for hospitals and improve the level of service qualities, a scheduling method was developed based on an estimation of distribution algorithm（ EDA）. First, a scheduling problem domain is described. Based on assignment constraints and resource capacity constraints, the mathematical programming models are set up with an objective function to minimize the system makespan. On the basis of the descriptions mentioned above, a solution policy of generating feasible scheduling solutions is established. Combined with the specific constraints of operating theatres, the EDA-based algorithm is put forward to solve scheduling problems. Finally, simulation experiments are designed to evaluate the scheduling method. The orthogonal table is chosen to determine the parameters in the proposed method. Then the genetic algorithm and the particle swarm optimization algorithm are chosen for comparison with the EDA-based algorithm, and the results indicate that the proposed method can decrease the makespan of the surgical system regardless of the size of operations. Moreover, the computation time of the EDA-based algorithm is only approximately 5 s when solving the large scale problems, which means that the proposed algorithm is suitable for carrying out an on-line scheduling optimization of the patients.

Three-dimensional conjugate gradient inversion of magnetotelluric sounding data

Based on the analysis of the conjugate gradient algorithm, we implement a threedimensional （3D） conjugate gradient inversion algorithm with magnetotelluric impedance data. During the inversion process, the 3D conjugate gradient inversion algorithm doesn＇ t need to compute and store the Jacobian matrix but directly updates the model from the computation of the Jacobian matrix. Requiring only one forward and four pseudo-forward modeling applications per frequency to produce the model update at each iteration, this algorithm efficiently reduces the computation of the inversion. From a trial inversion with synthetic magnetotelluric data, the validity and stability of the 3D conjugate gradient inversion algorithm is verified.

Identification of Molecular Markers for the Thinopyrum intermedium Chromosome 2Ai-2 with Resistance to Barley Yellow Dwarf Virus

The wheat_ Thinopyrum intermedium addition lines Z1,Z2 contain a pair of Th. intermedium chromosomes 2Ai_2 carrying the gene with resistance to barley yellow dwarf virus (BYDV). Genomic in situ hybridization (GISH) was used to analyze the chromosome constitution of Z1,Z2 by using genomic DNA probes from Th. intermedium and Pseudoroegneria strigosa . The results showed that the chromosome constitution of either Z1 or Z2 composes of 42 wheat chromosomes and two Th. intermedium chromosomes (2Ai_2). The 2Ai_2 chromosome is St_E intercalary translocation, in which the E genomic chromosome segment translocated into the middle region of the long arm of chromosome belonging to St genome. With the genomic DNA probe of Ps. strigosa , the GISH pattern specific to the 2Ai_2 chromosome may be used as a molecular cytogenetic marker. A detailed RFLP analysis on Z1, Z2 and their parents was carried out by using 12 probes on the wheat group 2 chromosomes. Twenty RFLP markers specific to the 2Ai_2 chromosome were identified. Two RAPD markers of OPR16 -350 and OPH09 -1580 , specific to the 2Ai_2 chromosome, were identified from 280 RAPD primers. These molecular markers could be used to assisted_select translocation lines with small segment of the 2Ai_2 chromosome and provide tools to localize the BYDV resistance.

Experimental study on thermal environment in large-space building with low sidewall air supply

The thermal environmental characteristics are experim-entally studied in terms of different air supply volumes and outdoor meteorological parameters in a large-space building which is air conditioned with a low sidewall air supply.The experimental results show that the indoor vertical temperature distributions under different condition are similar.The maximum vertical temperature difference（MVTD）is up to about 20 ℃,and it linearly changes with the sol-air temperature.The indoor vertical temperature gradients（VTGs）in the upper,central and lower zones are different.The influence of the sol-air temperature on the VTGs in the upper and the lower zones is greater than that in the central zone.The characteristics of the VTGs in the three zones affected by the air supply volume are the same as those affected by the sol-air temperature.Besides,because of the small air velocity,the predicted mean vote（PMV）on comfort in the occupied zone is slightly high and the air temperature difference between the head and the ankle is usually more than 3 ℃.

Optimization of Field Arrangement of Doublecropping Glutinous Sorghum and Soybean Intercropping Pattern

In order to reduce successive cropping obstacles, optimize field arrange-ment of double-cropping of sorghum and soybean and improve yields, the research used Guojiaohong No.1 and Nandou No.12 as raw materials to explore the effects of different field arrangements on yield and benefits of double-cropping. The results indicated that with the double-cropping, both of gross yield and output value were higher compared with single-cropping treatments; yield, thousand-grain weight, the weight of grain per ear, and ear length of the 1st-season glutinous sorghum de-creased as compartment width grew, and of regenerated sorghum and soybean changed from increasing to decreasing. Specifical y, with double-cropping system, gross yield of glutinous sorghum reached the highest at 8 352.9 kg/hm2 with com-partment width of 1.7 m and soybean yield the highest at 1 888.95 kg/hm2 with compartment width of 1.8 m. Additional y, gross output value and net incomes achieved the highest at 47 293.92 yuan/hm2 and 29 976.42 kg/hm2 for the two crops, with compartment width of 1.7 m, fol owed by the treatment with compart-ment width of 1.8 m. In general, the treatments with compartment widths of 1.7 and 1.8 m are optimal field arrangement. Additional y, output-to-input ratio was the high-est in the treatment with single-cropping glutinous sorghum and the least in the treatment with single-cropping soybeans.

在传统与现代之间的哈萨克民族——评哈依霞·塔巴热克的中篇《魂在人间》

《魂在人间》以其鲜明的时代感，独特的表现视角和汉语言形式，揭示了改革开放时代生活在传统与现代之间的哈萨克民族的情感与历史运命，力求一种现代意识与民族传统文化中真善美的融合。

Horizontal Distribution and Annual Variations of Fecal Coliform Bacteria in Luoyuan Bay

Fecal Coliform Bacteria （FCB） of marine waters was monitored in Luoyuan Bay from January, 2003 to December, 2005. The results showed that number of FCB in marine water samples ranged from no detection （ 〈2 cfu/100 mL） to 540 cfu/100 mL in Luoyuan Bay. Values of FCB during August to October were significantly higher than those during January to April during three year period. Monthly changes of FCB values at each year period were mainly due to monthly precipitation. In addition, compared with FCB values in difference sample sites, values of FCB in Bay-heed were significantly higher than those in middle of bay and Bay-mouth, Luoyuan Bay. However, values of FCB in Bay-mouth were significantly less than those in middle of bay. The ratios to the par of FCB in 2003, 2004, and 2005 years were 100%, 98.0%, and 97.9%, respectively. Therefore, we considered that the pollution of FCB of surface marine water in Luoyuan Bay was not serious.