Length-based vehicle classification in multi-lane traffic flow

For the realtime classification of moving vehicles in the multi-lane traffic video sequences, a length-based method is proposed. To extract the moving regions of interest, the difference image between the updated background and current frame is obtained by using background subtraction, and then an edge-based shadow removal algorithm is implemented. Moreover, a thresholding segmentation method for the region detection of moving vehicle based on location search is developed. At the estimation stage, a registration line is set up in the detection area, then the vehicle length is estimated with the horizontal projection technique as soon as the vehicle leaves the registration line. Lastly, the vehicle is classified according to its length and the classification threshold. The proposed method is different from traditional methods that require complex camera calibrations. It calculates the pixel-based vehicle length by using uncalibrated traffic video sequences at lower computational cost. Furthermore, only one registration line is set up, which has high flexibility. Experimental results of three traffic video sequences show that the classification accuracies for the large and small vehicles are 97.1% and 96.7% respectively, which demonstrates the effectiveness of the proposed method.     

基于SuperMap的地形图图幅查询系统设计与实现

基于VB和SuperMap Objects 2008平台,设计实现地形图图幅查询系统.该系统可在1954年北京坐标系或1980年西安坐标系下,实现任意单点或批量坐标解算任意国家基本比例尺地形图新、旧图幅编号,并能根据任意新、旧图幅编号计算四角图廓坐标,并可视化输出.     

独立建设“创新实验室”的必要性质疑

高等院校所提倡的创新实验教学主要应定位在特定知识领域基础知识体系上的突破,而不应一味的追求创新.近年来国内掀起一股独立建设“创新实验室”的热潮,针对此“创新实验室”蓬勃兴起的现象,指出创新性是实验室的应有本质特征,传统实验室创新教育功能的不足是应有功能的缺失.对独立建设“创新实验室”的必要性提出质疑,主张传统实验室创新教育功能的本性“回归”.认为“传统”与“创新”不但不矛盾,而且是统一的,两者的组合才是一个真正实验室所应扮演的完整“角色”.补充传统实验室缺失的创新教育功能是我国高等院校实验室建设的一条可选道路.     

皎然诗歌批评标准和诗歌分类标准的矛盾性和统一性

皎然是中唐著名的诗人和诗论家,他的《诗式》是唐代诗论发展史上的一座丰碑,它不仅总结了唐诗由兴而盛的成功经验,也反映了“安史之乱”后唐诗由盛而衰的过程。在《诗式》中,他提出了“五格论诗”的诗论方法,这“五格论诗”的方法和皎然的文艺思想有着密切的联系,既表现出方法自身的矛盾,也表现出统一于文艺思想的倾向,既显出矛盾性,也显出统一性。本文拟就皎然诗评标准内在的矛盾性和统一性提出看法,以求教于方家。     

Characteristics of electricity consumption of different industry types considering atmospheric condition

Reducing greenhouse gases (RHG) is going on actively in the international movement. In the field of architecture, RHG is an inevitable work. To establish a plan for RHG, firstly we need to reduce energy consumption. Greenhouse gas generated by energy consumption is the main cause of global warming. For this we should know that how much electricity consumption we use. The research targets of this study are commercial buildings with various businesses. Their electricity consumption was analyzed by business units rather than buildings. Each business was divided into 13 sectors according to industrial classification and electricity consumption was analyzed for each industry. For commercial buildings, the electricity consumption is done by the private sector and construction management is an autonomy system in private instead of an integrated management system. In this study, we classified and analyzed the electricity consumption characteristics according to collected data, analyzed the relationship between the electricity consumption with atmospheric temperature through SPSS, and developed an electricity prediction model.     

由简表的变化看《中国图书馆分类法》（第五版）的修订

通过对比《中国图书馆分类法》第四版和第五版简表部分的变化,分析了第五版的修订背景和修订特色。     

基于多模态话语分析理论的网络课程发展研究

网络课程随着数字信息技术和网络技术的发展而发展,基于多模态话语分析理论与功能语言学理论,网络课程发展的理想模式是构建逼真的三维或四维学习情境,刺激学习者的多种感官,让学习者身临其境地参与学习活动,从而顺利地完成意义构建,实现学习目的。“虚拟现实”技术的发展为网络课程理想模式即多模态虚拟课程的出现带来了可能。通过对多模态虚拟课程内涵、分类和特性的阐述,可以对网络课程的发展进行展望和分析。     

核素分布的8×8核素区域

在氘氚结团图中说明了4个8×8核素的分布区,每区包含64核素坐标,其中包括1,2个放射核素.4个区域的中心为（352,4）（35,26）（33,23）（31,16）.区域中的5个放射核素联系有146 62 40Sm84 72与132 58 30Ce76 28处于对称位置,放射核素中的146 62 40Sm84 22与212 84 40Po128 44的坐标S值相同,坐标H倍增联系.     

Learning Acetabular Fracture Classification using a Three-Dimensional Interactive Software: A Randomized Controlled Trial

Acetabular fractures are a real challenge for junior doctors as well as experienced orthopedic surgeons. Correct fracture classification is crucial for appreciating the fracture type, surgical planning, and predicting prognosis. Although three-dimensional (3D) tutorial is believed to improve the understanding of the complex anatomy structure, there have been few applications and randomized controlled trials to confirm it in orthopedics. This study aims to develop a 3D interactive software system for teaching acetabular fracture classification and evaluate its efficacy. Participants were randomly but evenly allocated into either the experimental group (who learned the acetabular fracture classification using a 3D software) or the control group (who used a traditional two-dimensional [2D] tutorial). Both groups were then tasked to classify 10 acetabular fractures and complete a five-point Likert scale on their satisfaction of each learning modality. To calculate significance (P < 0.05), independent t-test was used for normally distributed data whereas Mann-Whitney U test for non-normally distributed data. The experimental group significantly outperformed the control group (t (28) = 2.526, P = 0.017) with identifying correct acetabular fracture classification. Moreover, Likert scale score in the experimental group was also significantly higher than in the control group (Z = 2.477, P = 0.013). This 3D classification software has objectively and subjectively showed an advantage over the traditional 2D tutorial, resulting in an improved classification accuracy and higher Likert scale score. The 3D software has the potential to improve both clinical knowledge as well as identifying correct patient management in orthopedics.     

环境学科概念与分类方案研究

文章在分析目前国内外已有典型环境概念及其含义特点的基础上,指出了已有环境概念的狭义性、时空不确定性及与自然发展史的不一致性,结合近几年人们对环境科学与可持续发展理论的新认识,对环境一词提出了全新的概念,同时对环境系统的分类依据、分类方法及命名规则也提出了相应的方案,为环境学科概念及分类命名的进一步完善提供了新的思路。