传统教育理念与当代公民道德建设

弘扬中国优良传统道德，是当代公民道德建设中的重要内容，而传统教育理念是传承中华优良传统道德的桥梁。如何把传统教育理念与当代公民道德建设行之有效地结合起来，本文进行了简要地论述。     

Sonoanatomy of female reproductive organ of Sunda porcupine (Hystrix javanica)

The conventional anatomical study of specimens requires cutting processes which destruct the limited specimens. A non-destructive method, namely an ultrasonography, can be used to assess the anatomical organ information of those specimens. The aim of this research is to analyse the macroanatomy of the female reproductive organ in the Sunda porcupine (Hystrix javanica), using ultrasonographical imaging. In this study, four formaldehyde-fixed reproductive organ specimens of the Sunda porcupine were used. A 10–12 MHz linear ultrasound transducer was utilized to provide an imaging format of both longitudinal and transversal views. Photographic images were then used as comparison with a sonographic image. The results show that the ultrasound image of the Sunda porcupine reproductive organ soft tissue was hypoechoic, the lumen and antrum follicles were anechoic, while atretic follicles and the mons pubis were hyperechoic. Generally, the size of the organ was not significantly different between photographical and ultrasonographical imaging (p > .05). In conclusion, ultrasound images can be utilized for anatomical studies of the Sunda porcupine reproductive organs without destructing the specimen.     

基于无人机倾斜摄影的黄土滑坡调查与危险性评价

[目的]利用机动灵活的小型旋翼无人机对单体滑坡进行倾斜摄影测量,旨在探索一种能够满足复杂地形条件下黄土区地质灾害调查和评估需求的方法。[方法]以陕西省延安市赵家岸滑坡为例,利用无人机倾斜摄影测量技术获取了多视角、高重叠率、高分辨率滑坡影像,生成了数字高程模型(DEM)、数字正射影像图(DOM)和实景三维模型,获得了滑坡体空间几何数据,并结合层次分析和危险度计算方法评价了赵家岸滑坡的危险性。[结果](1)通过解译高分辨率的DEM,DOM和多层次的实景三维模型,可以提取滑坡的精细地形和微地貌特征,提高了地质灾害解译的准确度,有效降低了人工现场调查的劳动强度、时间成本和作业风险;(2)赵家岸滑坡的危险度值R为0.635,为较高危险性斜坡,需要加强滑坡的专业监测工作。[结论]以无人机倾斜摄影测量技术为基础的滑坡调查与危险性评价方法,尤其适合谷坡陡峭、河谷深切、植被稀疏的黄土区滑坡调查。该技术可为黄土区单体滑坡灾害的危险性评价提供一种新的研究方法。     

Anterior and posterior segment photography. An alternative approach using a dSLR camera adaptor

Purpose To describe a novel digital single lens reflex (dSLR) camera adaptor for anterior and posterior segment photography. Methods The adaptor was used to evaluate canine, feline, and equine patients presenting to Tufts Ophthalmology service. Anterior segment imaging was conducted with the adaptor mounted between a dSLR camera body (Canon 7D) and a macro lens (Canon EF‐S 60mm/f2.8). Posterior segment imaging was performed with the aid of an indirect ophthalmic lens mounted in front of the macro lens. Coaxial illumination during viewing was provided by a single white light‐emitting diode (LED) within the adaptor, while illumination during exposure was provided by the pop‐up flash or an accessory flash. Corneal and/or lens reflections were eliminated using a pair of linear polarizers, having their azimuths at right angles to one another. Results This dSLR camera adaptor provides quality high‐resolution, reflection‐free, images of both the anterior and posterior segments. It was easy to transport, assemble, and handle. The necessary adjustments, positioning, and focusing required for quality images were easily performed. Conclusion The described dSLR camera adaptor provides an alternative to existing imaging systems. High‐resolution image acquisition occurred at a fraction of the cost of established imaging system, particularly those devoted to the posterior segment.     

基于地表数码照相的林地总体植被覆盖度计算模型

Vegetation fractional coverage (VFC) is one of the key indicators of vegetation distribution. In the work a measurement-based model was developed to derive total forest VFC (TG) as well as the VFC of trees (T) and shrub-grasses (G) separately in a subtropical forest area in Nanjing, China. Both upward and downward photographs were taken with a digital camera in 72 quadrats (10 m × 10 m each). Fifteen models were established and validated. Models jointly using both T and G performed better than those using the T and G separately. The best model, TG = T + G- 1.134 × T × G- 0.025 (R2 = 0.9115, P 0.01, root mean squared error = 0.0789), is recommended for application. This model provides a good way to obtain total forest VFC values through taking tree and shrub-grass photos on ground below tree canopy rather than above tree canopy.     

释义与还原——马克思主义哲学当代性的释义学探讨

本文从释义与还原的角度对马克思主义哲学当代形态的建构进行了探讨。明确了只有站在意识形态和历史哲学两个维度上,我们才能够正确的获得马克思主义哲学当代性释义的"前结构"。提出应在思维和存在的现实关系中还原马克思主义哲学在实践基础上的批判的本真精神。认为只有将二者统一起来才能正确言说马克思主义哲学的当代性,据斥对当代性的无根言说。     

论"中国特色社会主义事业的建设者"的内涵及意义

从当代中国社会阶层分化这一动态过程中分析了"中国特色社会主义事业的建设者"概念的提出依据、科学内涵及现实意义。     

气泡在横流中的几何及动力学特性

为研究横流中气泡的几何特征和动力学特征,采用向循环水洞中通气的方法形成气泡,利用高速摄像技术对气泡的形态及演化过程进行采集,并基于MATLAB软件编写特定算法,对获得图像中的气泡特征参数进行提取.对气泡的初生形态、受力分析、运动轨迹、上升角度、尺寸与脱离频率进行分析,并获得了气泡终速度和当量直径的线性关系,通过量纲一数的分析,将气泡纵横比与韦伯数相关联,得到以下结论:随着雷诺数的增加,气泡脱离尺寸减小,脱离角度增加并且脱离频率呈线性增加趋势;气泡运动轨迹与静水环境中相似,分为直线段和振荡段,上升角度变化呈正弦规律且随雷诺数增加而逐渐稳定.轨迹随着水流速度的上升逐渐倾斜接近于直线,振荡段摆幅降低;气泡的终速度随着当量直径的增加迅速减小,小气泡的速度上升速度较快;高雷诺数下气泡形变与表面张力的关联可以忽略.     

PY_130型摇臂式喷头摇臂运动规律试验研究

采用先进的高速摄影技术,对PY130摇臂式喷头的导流器受水射流冲击进行了试验研究,得到了摇臂运动规律,并与摇臂解析公式进行了对比分析。结果表明正转撞击周期随着进口工作压力增大而增大,反转撞击周期和正、反转过程的非自由运动时间随着进口工作压力的增大而减少。正转过程的自由运动时间要远大于非自由运动时间,反转过程的非自由运动时间约占撞击周期的25%。在正转过程的自由运动阶段,摇臂角位移变化呈正弦曲线;在正、反转运动过程的非自由运动阶段,角速度变化无明显规律。角位移和角速度的试验值与计算值在数量级上是一致的,试验值高于计算值。     

城市绿地生态系统及其研究

在概述城市绿地系统概念、构成、分类、特征及功能的基础上，总结了现代城市绿地效益研究、景观评价、景观生态学、信息技术应用、城市植被培育等领域的研究现状，提出了城市绿地系统的发展、规划及研究趋势。