黎族高中生个性心理特征及阳光体育干预研究

在海南五指山市和海口市各3所中学随机选取65名黎族和99名汉族高中学生作为研究对象,用SCL-90对他们的个性心理特征进行了测试,通过对数据的统计推断和分析,提出了阳光体育干预措施.     

地磅销售智能卡网络管理系统

针对单机版的地磅销售系统已不再适用多磅联合销售的状况,开发了网络版地磅销售系统,引进现代化的智能红外线车辆监控报警系统,应用计算机网络技术、IC卡刷卡技术、红外线扫描技术、起落杆控制技术,实现了对出入门口的车辆的监控,不仅有效利用地磅销售资源,而且防止了过去大量丢失煤炭的现象,保证了企业的经济效益。     

Calculation of the wide-angle neutron spectra from the ~9Be(d,xn) reaction in a thick beryllium target

The multi-layer computing model is developed to calculate wide-angle neutron spectra, in the range from0° to 180° with a 5° step, produced by bombarding a thick beryllium target with deuterons. The double-differential cross-sections(DDCSs) for the ~9 Be(d, xn) reaction are calculated using the TALYS-1.8 code. They are in agreement with the experimental data, and are much better than the PHITS-JQMD/GEM results at 15°, 30°, 45° and 60° neutron emission angles for deuteron energy of 10.0 MeV. In the TALYS-1.8 code, neutron contributions from direct reactions(break-up, stripping and knock-out reactions) are controlled by adjustable parameters, which describe the basic characteristics of typical direct reactions and control the relative intensity and the position of the ridgy hillock at the tail of DDCSs. It is found that the typical calculated wide-angle neutron spectra for different neutron emission angles and neutron angular distributions agree quite well with the experimental data for 13.5 MeV deuterons. The multi-layer computing model can reproduce the experimental data reasonably well by optimizing the adjustable parameters in the TALYS-1.8 code. Given the good agreement with the experimental data, the multi-layer computing model could provide better predictions of wide-angle neutron energy spectra, neutron angular distributions and neutron yields for the ~9 Be(d, xn) reaction neutron source.     

MPI在蒙特卡罗程序GMT中的应用和发展

针对ADS颗粒靶概念的研究和设计,中国科学院近代物理研究所自主研发了蒙特卡罗模拟软件GMT。为了提高GMT程序的计算效率,研究了MPI在GMT中的应用和发展,实现了大规模随机数在进程中的随机分配,并采用快速读写文件的方式替代了MPI相关数据通信函数,极大地提高了计算效率。并研究了不同规模计算实例进程数、加速比、效率之间的关系,确定了最大加速进程数及并行效率最高时的进程数,为科研工作者在计算资源和计算效率之间选择最优计算方案提供了科学依据。MPI在GMT中的成功应用使计算资源得到了充分、高效的利用,极大地提高了计算效率,解决了蒙特卡罗方法中大规模事件模拟计算时间长、计算不稳定等问题,在散裂靶大规模扫描计算中发挥了重要的作用。For the research and design of the ADS granular-flow target concept, the Institute of Modern Physics, CAS has developed a Monte Carlo simulation software (GPU-accelerated Monte Carlo Transport program, GMT). In order to improve the computational efficiency of the GMT program, development and application of MPI in GMT were studied, to realize random distribution of the large-scale random number in the sub processes. Rapid reading and writing files were employed instead of the MPI data communication function, which greatly improves the computational efficiency. Different scale calculations were performed to study the relationship of process instance number, speedup to find the maximum acceleration process number and the number of processes when parallel efficiency is highest, which provides a scientific basis for researchers to optimize the computational program between computational resources and computation efficiency. The successful application of MPI in GMT, utilizes the computing resources fully and efficiently, improves the computational efficiency, solve the long time cost and unstable problem of Monte Carlo method in large-scale event simulations, plays an important role in the large-scale scanning calculation of the spallation target.     

罗1井区压裂水平井裂缝系统优化

 为了提高水平井压裂效果的成功率和有效率,在压前的施工设计中要充分考虑裂缝参数的优化。针对水平井压裂特点,在非均质低渗透油藏模型的基础上,以数值模拟软件Eclipse为技术手段,对影响水平井压裂后产量的裂缝参数包括裂缝方位、裂缝位置、裂缝条数和非均匀裂缝长度等进行了优化研究。研究结果表明,水平井产量随着裂缝条数、裂缝长度和裂缝导流能力的增加而增加;对于不同裂缝布局,根部和端部裂缝的间距小于内部裂缝的间距;由于裂缝的干扰作用,不同位置的裂缝产量不同,处在中间位置的裂缝产量最低。     

MCADS程序的开发和ADS基准题计算

由于加速器驱动次临界堆存在外中子源,堆芯结构复杂,中子注量的各向异性严重,所以相关燃耗计算在次临界系统设计中起着重要作用。为实现次临界系统的燃耗计算,结合粒子输运程序MCNP处理复杂几何和燃耗程序LITAC处理核素全面的特点,开发了接口程序MCADS耦合MCNP和LITAC。然后选取IAEA-ADS基准题对耦合程序进行了验证计算。结果表明,燃耗、外源强度、空泡效应、初始功率分布等方面的计算结果和其他国家的计算结果相比有很好的一致性,证实了MCADS在次临界模式计算中的可靠性。     

基于可能性分布联合落影的红外图像融合算法选取

针对双模态红外图像实际融合需求中常涉及到异类差异特征协同优化融合,且现有差异特征属性无法针对性地调整融合算法进行有效驱动,导致融合效果差等问题,提出了基于可能性分布联合落影的双模态红外图像融合算法选取的方法。首先计算双模态红外图像差异特征幅值的融合有效度,利用K最近邻法得到差异特征幅值的概率密度分布,得到差异特征频次属性的分布;然后通过差异特征幅值属性与频次属性构造差异特征权重函数,建立异类差异特征权重函数与多融合算法间的可能性分布合成,得到异类差异特征权重函数多融合算法融合有效度的联合落影;最后构建融合性能指标动态选取最优融合算法。实验结果表明,本文方法所选出的最优融合算法在等级得分指标上明显优于其他算法,验证了本文将可能性分布联合落影运用于双模态红外图像最优融合算法选取中具有可行性。     

提高学生体育兴趣,打造高品质的体育课堂

为提高学生的体育兴趣,打造高品质的体育课堂,本文依据具体问题具体分析的原则,对学生的身心特点,体育教师的职业特点、体育教学的基本规律等进行了系统的分析与研究,并在此基础上提出了一系列切实可行的方法与措施.     

关于药物的脑血分布计算方法的研究

应用Heperchem 7.0,amsol 6.8等多种计算工具和方法对一个含有59种化合物分子的体系进行了计算, 并对所得数据进行多元线性回归分析, 得到了一个简单的双参数回归方程:lg(cbr/cbl)=0.028(±0.005)ΔG 0.131(±0.038)lgP 0.163(±0.123).这个方程具有较强的预测血脑屏障渗透值的能力.     

15N（p,n)15O反应中子源0°角激发函数测量

利用中国原子能科学研究院HI-13串列加速器上的多探测器快中子飞行时间谱仪, 测量了38个不同入射质子能量点下15N（p, n)15O反应0°角方向的激发函数。 测量数据用蒙特卡罗方法进行了模拟, 以进行中子注量衰减和入射窗厚度的不确定度修正。 实验在入射质子能量位于6.029—8.056 MeV之间时发现了3个共振峰, 这一点与DROSG 2000评价数据及PTB数据相符合, 但三家的截面数值存在差异, 对这些差异需要作进一步深入探讨。 The excitation function of 15N（p, n)15O reaction at 0 degree was measured at 38 energy points using the fast neutron Time of Flight (TOF) spectrometer at the HI 13 Tandem Accelerator in the China Institute of Atomic Energy（CIAE）. The measured data were analyzed by Monte Carlo simulation for the corrections of neutron flux attenuation and uncertainty of the thickness of the entrance foil. Three resonance peaks were observed in this experiment in the energy range from 6.029 to 8.056 MeV,which is comparable with the DROSG 2000 evaluated data and the PTB data. However,more experimental studies are needed since the cross sections deviate with each other.