考虑地下水浸没作用的预压荷载变化规律与沉降计算研究

研究了堆载预压法加固软土地基的过程中地下水浸没作用对预压荷载的减小情况,给出了深圳蛇口地区堆载预压加固地基过程中荷载的变化规律,利用大、小应变条件下的固结沉降计算公式对几种工况下的计算结果进行了对比分析.结果说明,考虑地下水浸没作用对地基固结沉降的影响随荷载和土压缩性以及土层厚度的增加而增大.通过与传统计算方法的比较,表明进行大变形分析时预压荷载的变化对最终沉降量有显著影响.     

衰减荷载作用下饱和软土的固结分析

研究了衰减荷栽作用下软土一维固结问题,建立了小变形固结模型,探讨了荷载衰减规律,分别求解了相应的小变形和大变形固结边值问题;通过理论解答与6块场地实测沉降的比较,表明用考虑荷载衰减的大变形固结理论计算软土一维固结的沉降值与实测结果接近。     

Parallel machine scheduling with eligibility constraints: A composite dispatching rule to minimize total weighted tardiness

We study a parallel machine scheduling problem, where a job j can only be processed on a specific subset of machines M_j, and the M_j subsets of the n jobs are nested. We develop a two‐phase heuristic for minimizing the total weighted tardiness subject to the machine eligibility constraints. In the first phase, we compute the factors and statistics that characterize a problem instance. In the second phase, we propose a new composite dispatching rule, the Apparent Tardiness Cost with Flexibility considerations (ATCF) rule, which is governed by several scaling parameters of which the values are determined by the factors obtained in the first phase. The ATCF rule is a generalization of the well‐known ATC rule which is very widely used in practice. We further discuss how to improve the dispatching rule using some simple but powerful properties without requiring additional computation time, and the improvement is quite satisfactory. We apply the Sequential Uniform Design Method to design our experiments and conduct an extensive computational study, and we perform tests on the performance of the ATCF rule using a real data set from a large hospital in China. We further compare its performance with that of the classical ATC rule. We also compare the schedules improved by the ATCF rule with what we believe are Near Optimal schedules generated by a general search procedure. The computational results show that especially with a low due date tightness, the ATCF rule performs significantly better than the well‐known ATC rule generating much improved schedules that are close to the Near Optimal schedules. © 2017 Wiley Periodicals, Inc. Naval Research Logistics 64: 249–267, 2017     

TIME-VARYING CHARACTERISTICS OF SOUTH KOREA-UNITED STATES AND JAPAN-UNITED STATES MILITARY ALLIANCES UNDER CHINESE THREAT: A PUBLIC GOOD APPROACH

This paper investigates the nature of two military alliances under Chinese threat. The findings are as follows: First, South Korea does not consider China a significant threat while Japan and the United States have recognized China as a serious threat since the 1990s and the 2000s, respectively. Second, the relationship between South Korea and the United States is a true military alliance for all time periods, but the nature of the alliance has changed since the 1970s. Third, although Japan began to form an alliance relationship with the United States in the 1990s, Japan is considered a more significant ally by the United States. This paper implies that, should China provoke a military confrontation, it might be difficult to deduce a common solution among the three countries because of the different response to military threats from China.     

一种信号检测模糊技术及其应用

本文基于模糊理论,建立一种信号检测的模糊模型,并实际运用于连续波多普勒测速雷达目标速度的提取,取得了满意的结果     

应用参数微分法从弹丸试验数据获取阻力系数

本文在介绍弹道模型的基础上,讨论了应用参数微分法获取弹丸阻力系数的过程,并给出了计算机仿真实验结果。此方法已应用于靶场。     

一种用于创作艺术画面的梯度着色方法

本文介绍一种创作生动画面的新型着色方法。它不同于以往的单一色彩(或模式)的填充,而是以一种颜色渐变的方式进行填充。利用该算法产生的计算机艺术图片,生动而且逼真,已经应用于电脑动画的创作。文中给出了C语言实现的程序:     

流动粉浆输送装置的研究

为减轻环卫工和建筑工人劳动强度和提高工作效率,在已有螺旋输送机的工作原理基础上,进行创新。将螺旋片由刚性连接改为柔性连接,将硬管改为软管。经过试验,在选择了一定的工艺参数后,使刚性的螺旋片和柔性的胶管之间,有较好的配合效果,从而实现了螺旋输送机械,可以在输送管道有一定弯曲的条件下,运送砂浆的功能。该研究有一定的实用价值和社会意义。加工制造工艺不复杂,有利于普及。     

新民主主义革命时期我军军事行政法制建设的历史演进之考察

我军军事行政法制建设是和人民军队的建立和发展紧密联系在一起的。新民主主义革命时期,我军的军事行政法制建设随着革命形势的发展而不断变化调整,为新民主主义和社会主义军事行政法制建设奠定了基础,开辟了道路,在中国军事行政法制史上占有重要的地位,在我军乃至我国的法制建设史上留下了光辉的一页。     

大型水陆两栖飞机在反潜战中的运用

大型岸基固定翼反潜飞机虽然具有航程、航时、速度等多方面的优势,但由于其大部分的时间都花费在了巡逻飞行和盘旋等待上面,实际作战能力的发挥有限,且效费比也较低。若发展一型速度和岸基涡扇动力固定翼飞机相当,作战半径大、抗浪性能好、且具备水面持久驻留和低速巡航功能的大型水陆两栖反潜飞机,则可以较好的解决上述问题。文章分析了大型水陆两栖反潜飞机的特点和发展现状,并对其在应召反潜、检查反潜、巡逻反潜和持久威胁组网式反潜中的运用和优势进行了分析和探讨。研究发现,通过利用可在水面起降和长时间驻留停泊的特点,以大型水陆两栖为平台的反潜飞机不仅可以大大提高航空反潜作战的有效性,还能极大的降低运行成本,对增强海军中远海作战能力和体系化作战能力具有重要的意义。