安徽省区域经济物流弹性研究

对安徽省1990—2011年的物流能力和GDP数据进行了统计分析和回归分析,建立了物流能力与时间、GDP之间的数学模型,进而对安徽省区域经济物流弹性进行分析。研究结果表明安徽省物流能力和区域经济发展之间存在互动关系,并对安徽省2012-2021年区域经济物流弹性进行了预测。基于分析的结论提出相关政策建议,对安徽省制定物流产业和经济发展规划提供参考。     

电感器的现状和发展趋势

简要介绍了插装式电感器和片式电感器的现状和特点及向小型化、高频化、高精度化和集成化的方向发展。     

地铁与国铁视频监控系统对比分析

本文主要从地铁及国铁视频监控系统的传输方式,系统硬件组成和系统的功能等方面分析了两者的不同点,为相关铁路的的设计提供了参考价值。     

从B~α空间到Q_p空间的一个积分型算子

设φ是单位圆盘D上的解析自映射,g∈H(D).利用符号函数φ和映射g的函数论性质,给出从Bα空间到Qp空间的积分型算子Cnφ,g的有界性和紧性的特征.     

Emerged fossil corals on the coast of northwestern Hainan Island, China: Implications for mid-Holocene sea level change and tectonic uplift

Fossil corals are widespread on the coast of northwestern Hainan Island, China. Most of these corals are exposed during low tide levels, indicating that a higher sea level may have existed during their life time. The radiocarbon data introduced by this paper in combination with those from other sources show that the corals were alive mainly during the midto late-Holocene. Mid-Holocene sea levels 1-3 m higher than the present level were confirmed for adjacent coasts; however, the emerged corals on the investigated coast are not necessarily indicators of a higher eustatic sea level. They do predict relative sea levels of 1.5-3.4 m when using 1 m below the tidal datum as the upper limit of coral growth. However, using the Mean Lower Low Water as the coral’s upper growth limit, the relative sea level on the non-volcanic coast was almost as high as the present level, whereas that on the volcanic coast was 0.4-2.0 m higher than present. Therefore, the exposure of these dead coral heads and their discrepancy in elevation may be the result of tectonic uplift caused by volcanic activities. From these results, the highest sea level of upward coral growth must be defined first when using fossil corals to reconstruct past sea levels. Meanwhile, vertical tectonics have to be taken into account as a significant factor when conducting high-resolution sea level reconstruction, although the South China coast is located in a "tectonically stable" region.     

Optical turbulence profiling with single star SCIDAR technique

In order to characterize optical turbulence, we have developed a single star SCIDAR （SSS） for measurement of the distribution of Cn^2 with height. The SSS consists of a 40 cm telescope and a CCD camera for fast sampling of stellar scintillation pattern. Spatio- temporal auto and cross-correlation functions of the single star images are computed, providing vertical profiles of optical turbulence intensity C2（h） and wind speed V（h）. Using this new SSS experiment, profiles of turbulence can be obtained from the ground to the top of atmosphere, allowing the determination of seeing, isoplanatic angle and coherence time. Detailed characteristics of atmospheric optical turbulence are important for active and passive imaging, astronomical site testing, adaptive optics, laser communications, target tracking and designation, and laser beam control. We plan to improve the robotization of the SSS to be able to use it routinely even under harsh weather and altitude conditions that we expect to encounter on the high Tibetan plateau or at Dome A in Antarctica. SSS will also be applied for the site testing campaign of the future Chinese extremely large telescope.     

Dehydration melting of UHP eclogite and paragneiss in the Dabie orogen: Evidence from laboratory experiment to natural observation

Dehydration melting of subducted continental crust is significant during exhumation, and its study from both experimental and petrological observations is of great importance to our understanding of continental geodynamics. Dehydration melting experi- ments were carried out on ultrahigh-pressure （UHP） eclogite from Bixiling in the Dabie orogen using a piston cylinder at 1.5-3.0 GPa and 800-950℃ to investigate partial melting of eclogite induced by phengite breakdown. The phengite-bearing eclogite started to melt at T≤800-850℃ and P=1.5-2.0 GPa and produced about 3% granitic melt. The products of dehydration melting vary with temperature and pressure. Such results provide valuable constraints on the micro-texture related to partial melting of UHP rocks in the Dabie-Sulu orogenic belt. Three types of polyphase inclusions were identified in garnet from the Shuanghe UHP eclogite. K-feldspar and quartz inclusions are interpreted to represent the products of segregation and crystallization of minor amounts of melt that formed during dehydration melting of phengite by the inferred reaction Phengite＋Omphacite＋Quartz Amphibole_＋Garnet＋Melt （K-feldspar＋Quartz＋Plagioclase）. Polyphase inclusions of phengite and K-feldspar＋Quartz inclusions were also found in zoisite/clinozoisite and garnet from the Shuanghe garnet-bearing paragneiss. These polyphase inclusions pro- vide evidence for a continuous process from sub-solidus dehydration to partial melting within the UHP gneissic rocks. The com- positional variation of garnets demonstrates that breakdown of epidote-group minerals may have played a crucial role during de- hydration melting reaction of phengite. The Ti-in-zircon thermometry and Si content of phengite in zircon suggest that partial melting would occur at 783-839℃ and 2.0-2.5 GPa. Therefore, both experimental results and petrological observations indicate that dehydration melting and fluid activity within the Dabie UHP rocks at micro-scale are controlled by the breakdown of phengite.     

有序含氮介孔碳对金属离子的吸附性能

以SBA-15为硬模板,吡咯为含氮碳源,通过硬模板法合成了有序含氮介孔碳(NMC).该材料具有高度有序开放的介孔结构,比表面积和孔容分别为647m2/g和0.8cm3/g,最可几孔径为3.5nm,碳氮比为11.3,其表面具有多种含孤对电子或带正、负电子的官能团,且具有良好的热稳定性.对Cu(Ⅱ)、Zn(Ⅱ)、Ni(Ⅱ)、Cr(Ⅵ)和Mn(Ⅶ)等离子的吸附研究表明:在50ml/L稀溶液中,该材料对各金属离子的平衡吸附量依次为Cu(Ⅱ)>Cr(Ⅵ)>>Ni(Ⅱ)～Zn(Ⅱ)>>Mn(Ⅶ),对Cu(Ⅱ)离子表现出选择性吸附,溶液中98%以上Cu(Ⅱ)离子可被吸附.NMC对Cu(Ⅱ)、Cr(Ⅵ)离子的吸附行为遵循Langmuir等温吸附方程,且有高饱和吸附容量,分别高达120.7mg/g和322.6mg/g,为有序介孔碳(CMK-3)的1.4和2.1倍.该材料循环使用3次后,依然保持很好的吸附性能.     

面向人脸光照合成的光照参数精确估计算法

为提高人脸图像光照合成的精度,提出了一种基于商图像的光照参数估计新算法.首先分析并指出传统商图像算法中存在恒定反射系数假设难以严格成立这一缺陷,它给光照参数估计引入了固有误差;然后在参数化光照子空间框架下设计了一个改进的目标函数,用商图像本身去替代原算法中的反射系数比,从而弱化了假设条件的限制,允许人脸各像素点拥有独立的反射系数;设计了一个迭代算法,通过线性系统来求解目标函数,能够实现对光照参数的高精度估计.在OFD人脸库和AI&R人脸库上的实验结果表明,所提光照参数估计算法具有良好的收敛性,光照参数估计精度的迹商指标可以获得25.49～43.09 dB的提升,光照合成图像中的峰值信噪比可以获得4.51～9.24 dB的提升.     

大陆与台湾高校学前特殊教育人才培养模式比较

本文对大陆与台湾地区高校学前特殊教育人才培养模式进行分析,论述了两地学前特殊教育课程设置的特点,在此基础上进行比较,并提出台湾地区高校学前特殊教育人才培养模式的可借鉴之处。