Temperature variations on the Tibetan Plateau over the last two millennia

The paleoclimate data recovered from ice cores,tree rings and lake sediments indicate regional features of cfimatic change on the Tibeta n Plateau (TP) during the last 2000 years. The composite temperature reconstructions in-dicate that several main climatic episodes, such as the “LittleIce Age“ between 1400 and 1900, the “Medieval Warm Pe-riod“ in 1150-1400, a less warm period in 800-1100, and an earlier cold period between the 3rd and 5th centuries,occurred in the TP. In addition, temperature varied from region to region. The period from AD 800 to 1100, which waswarm in northeastern TP, was contemporaneous with cool-ing in the western and southern TP. The southern TP ex-perienced warming between 1150 and 1400. For western TP,the δ^18O records of the Guliya ice core indicate that the pe-Hod 1250-1500 witnessed a clear warming. Large-scaletrends in the temperature history from northeastern TP aremore similar to those in eastern China than are the trendsfrom the Guliya ice cap far to the west and southern TP. The most prominent similarities between the temperature varia-tions of the TP and eastern China are such cold phases as 1100-1150, 1500-1550, 1650-1700 and 1800-1850, andthe latter three cold events match with three widespreadg lacial advances which occurred on the TP during the Little Ice A2e.     

Time-division phase modulated single-photon interference in a Sagnac interferometer

We introduce a stable, long-distance singlephoton Sagnac interferometer, which has a balanced configuration to efficiently compensate phase drift caused by change of the fiber-optic path. By using time-division phase modulation, single-photon interference was realized at 1550nm in a 5-km-long as well as 27-km-long Sagnac fiber loops,with a fringe visibility higher than 90% and long-term stability. The stable performance of the single-photon interference indicated that the time-division phase-modulated Sagnac interferometer might readily lead to practical applications in single-photon routing and quantum cryptography.     

基于数据挖掘技术的网络入侵检测系统

提出了一种基于数据挖掘技术建立入侵检测系统的方法。研究了如何在入侵检测中对审计数据进行数据挖掘，从系统审计数据中提取出描述正常和异常行为的特征和规则，从而建立攻击检测模型，并提出了全套步骤。     

电化学方法合成有机物综合实验设计与评价

本文提出在现有仪器设备基础上,改革传统实验教学模式,在化学专业高年级开设综合性实验,以便培养具有创新精神、创新意识、创新能力的适应素质教育需要的高质量人才。文章给出了综合实验设计方案并对其进行了分析、评价。     

舰船装备视情维修间隔模型研究

针对定期维修的缺陷，提出了基于可靠度和费用的舰船维修间隔模型，具有维修针对性强的特点，能充分利用舰船装备系统的工作寿命，从而减少维修工作量和维修经费开支，提高舰船的在航率．实践证明，该舰船装备视情维修间隔模型是有效的．     

日本语全角代码的识别及编辑

本文给出了日本语DOS下全用代码的识别及编辑方法。该方法同样适用于汉字操作系统下全用代码的录入及编辑。     

金融网络协议的网络管理功能

在简述ＦＮＰ（金融网络协议）的基础上，结合某地国际金融网络跨行ＡＴＭ（自动柜员机）系统的网络结构，探讨了金融网络系统ＦＮＰ的网络管理功能、网络管理信元及其特点     

核内核子的胶子分布函数

利用推广ｘ重新标度模型，考查了原子核内核子的胶子分布函数。计算了Ｓｎ核和Ｃ核胶子分布函数之比值，所得结果与实验数据相符合。     

二组分气体在固体上吸附的研究(Ⅶ)─—在不同复盖度下二组分气体在氧化铝上的吸附规律

测定了不同复盖度下的苯－正己烷和正庚烷－正己烷两个二组分气体在氧化铝上的组成吸附等温度，以及单组分气体在氧化铝上吸附的ＢＥＴ常数．结果表明，随着复盖度的增加，两个体系的组成吸附等温线都向下靠近它们各自的气液平衡曲线，可以近似地将二组分气相与吸附相的平衡看成二组分的气液两相平衡，两个体系的组成吸附等温线基本上都可以通过理想溶液的相对挥发度方程式模拟得到