施桥运河大桥水上支架施工控制研究

文章以施桥运河大桥为依托工程,介绍了水上支架施工控制的基本原则与方法,并针对施桥运河大桥水上支架的构造特点,以有限元仿真分析为基础,从结构计算、内力监控变形监控、钢托架支点处锚固螺栓、钢垫片外观检查等方面对其施工控制方案进行计算分析。结果表明：施桥运河大桥施工过程支架结构安全,成桥各指标均满足设计要求。     

巴东红层路堑边坡失稳机理分析及治理措施

巴东组红层是中国红层的典型代表。以湖北宜巴高速公路红层路堑边坡为例,采用定性分析与定量分析相结合的方法,对其失稳机理进行分析。结果表明:降雨作用是诱发滑坡的主要原因,并对路堑边坡治理,提出以抗滑挡墙与锚杆框架梁等相结合的加固措施,达到了较好的治理效果。     

政治与消费在文学类像中的合谋——《猎杀“红十月”号》的畅销元素探析

文章以美国当代著名小说家汤姆·克兰西的代表作《猎杀"红十月"号》为研究对象,从畅销背后的政治内驱力和畅销背后的商业助推力两个方面探寻小说畅销的原因,展现了政治与消费在文学类像中的巨大合力。     

复杂电力系统的鲁棒降阶方法研究

针对当前复杂电力系统的数学模型的多变量、高阶次、强耦合,把H∞控制中的模型匹配问题与高阶系统平衡截断降阶方法相结合,提出了鲁棒降阶控制方法．应用这种方法对两区域间互联电力系统进行降阶,并与改进平衡法的降阶系统进行仿真比较,然后对鲁棒降阶系统进行解耦．通过仿真结果可以看出鲁棒降阶方法具有更好的降阶效果,降阶系统可以达到所希望的性能要求．     

交叉口单点公共汽车交通优先控制方法研究

开发ITS背景下的公共汽车交通优先控制方法是从根本上改善公交车辆运行情况的需要。满足车辆固有的行驶时刻表是实施公交优先通行申请的重要依据,在本文控制策略中运用绿灯时间延长和相位提前激活两种方法,在兼顾其它车辆运行情况的前提下,给予晚点公交车优先的通行信号。论文最后以厦门市湖滨南路实际交通流量为依托,运用交通仿真方法验证了优先控制策略的实际效果。     

富水半成岩砂岩地层地铁车站深基坑变形监测与数值模拟分析

以兰州市某地铁车站深基坑为例,研究第三系富水半成岩砂岩地层条件下桩撑支护结构深基坑的变形规律。通过对围护桩体水平位移、钢支撑轴力、地表沉降等实测结果进行分析,对基坑开挖过程进行数值模拟,将数值计算结果与实测结果进行对比研究基坑的变形规律。监测结果与数值分析表明:桩体变形呈现出两头小中间大的"弓型"变形特征,围护桩水平位移最大值发生在开挖面附近;正常施工下地表沉降形态为凹槽形,若围护桩间出现明显漏水、漏砂现象时为三角形;钢支撑轴力跳跃上升并在其下一道支撑架设后受力达到最大;深大基坑工程采用钻孔咬合灌注桩作为围护及止水结构时,必须确保桩体垂直度,保证桩体施工质量达到设计要求;数值计算结果与实测结果基本一致,数值模拟可为基坑的设计和施工提供依据。     

必然还是巧合:中原文化与印第安文化的异同--中国与印第安人的太阳神话之比较研究

关于中国与印第安民族宗教信仰丈化方面的比较，我们是把中国国内的一切民族(汉民族和古今所有的少数民族)都包括在内的，同时把美洲地区所有的印第安人诸部落均包含在内。从时间上看，远古时期至今的关于日神信仰和神话的内容均可纳入；从内容上看，在我国主要是指自新石器时代文化遗迹的内容到今日华夏各民族的神话传说等所有内容，在美洲印第安人的相关内容中，我们所述及的范围也包括从印第安文明遗址被发现的历史时期一直持续到近现代。     

浅析《红楼梦》中手帕的作用

本文由红楼梦中的小道具——手帕入手,通过对摔帕、赠帕、题帕、忆帕、焚帕等细节及丢帕、找帕、梦帕、还帕等情节的梳理,浅析它在宝黛爱情、红芸之恋中的示情、释情及传情作用。在红楼梦中,手帕不只是宝黛爱情、红芸之恋故事中的两大线索,与手帕相关的某些情节还起到了丰满作品人物形象、从旁暗示整部作品主题的作用。     

Relationship between condition and recruitment success of red shrimp (Aristeus antennatus) in the Balearic Sea (Northwestern Mediterranean)

This study evaluates the reproductive potential and condition of the red shrimp (Aristeus antennatus) population inhabiting the waters around the Balearic Islands (Northwestern Mediterranean Sea), between 1991 and 2004. Red shrimp is one of the most valuable exploited demersal fishery resources in the western Mediterranean. To assess the condition of this species, we use two indices based on weight and length data, one including the gonad weight and another excluding it. Different biological parameters of the population dynamics and reproductive biology, such as sex-ratio, maturity, gonadosomatic index and presence of the spermatophore in females have also been analysed. A negative relationship was found between the gonadosomatic index and the condition of red shrimp, indicating that energy reserves are transferred from the body to the gonad during the reproductive period. The condition of adults reached minimum values during the maturation and spawning period after mating, when the gonadosomatic index, the spermatophore presence in females and the proportion of females in the population were highest. The relationship between the condition of adults during the months prior to spawning and the number of recruits in the following year was significant and positive. This relationship was stronger when only male condition was considered, suggesting that males have an important role on the reproductive potential of this species. Overall, our results suggest that condition of red shrimp, particularly males, is an important aspect for the reproductive and recruitment success of this species. The observed decreasing trend in male condition over years may raise concern on the future reproductive potential of that population.     

Remotely-sensed chlorophyll a observations of the northern Red Sea indicate seasonal variability and influence of coastal reefs

The biological dynamics of the open northern Red Sea (21.5°–27.5° N, 33.5°–40° E) have not been studied extensively, due in part to both the inaccessibility of this desert region and political considerations. Remotely-sensed chlorophyll a data therefore provide a framework to investigate the primary patterns of biological activity in this oceanic basin. Monthly chlorophyll a data from the 8-year Sea-viewing Wide Field-of-View sensor (SeaWiFS) mission, and data from the Moderate Resolution Imaging Spectroradiometer (MODIS), were analyzed with the Goddard Earth Sciences Data and Information Services Center (GES DISC) online data analysis system “Giovanni”. The data indicate that despite the normal low chlorophyll a concentrations (0.1–0.2 mg m^− 3) in these oligotrophic waters, there is a characteristic seasonal bloom in March–April in the northernmost open Red Sea (24° to 27.5° N) concurrent with minimum sea surface temperature. The location of the highest chlorophyll concentrations is consistent with a linear box model [Eshel, G., and Naik, N.H., 1997. Climatological coastal jet collision, intermediate water formation, and the general circulation of the Red Sea. J. Phys. Oceanogr. 27(7), 1233–1257.] of Red Sea circulation. Two years in the data set exhibited a different seasonal cycle consisting of a relatively weak northern spring bloom and elevated chlorophyll concentrations to the south (21.5° to 24° N).The data also indicate that large coral reef complexes may be sources of either nutrients or chlorophyll-rich detritus and sediment, enhancing chlorophyll a concentration in waters adjacent to the reefs.