《地质学基础》图解化案例教学研究

图解化案例教学是通过将平面化的教材知识转变为立体可视、可信、直观的东西,充分调动视觉认知在学习中的作用.有助于将抽象的书本知识形象化,帮助学生更好地理解课堂教学内容,在一定程度上弥补传统教学模式中视觉认知作用的不足.通过将地质知识静态化和动态化的表达,使学生直观的理解地质学的基本原理和基本技能.实践证明,教学效果有较大的提升.

经济理论图解化教学研究

无论是进行基础理论教学还是专业理论教学都存在共同的难题 ,即内容枯燥 ,学生理解有一定困难 ,学习效果欠佳。经济理论图解化教学法研究强调把理论变为图解 ,深入浅出 ,使其具有直观化 ,浅显易懂的特点。

地理图解化课堂教学艺术初探

本文结合教学实际,初步探讨了地理图解化课堂教学中,通过新课导入,语言表达,图像板书,课堂提问,课堂总结等手段,改进教学方法,提高教学质量的图解化课堂教学艺术。

论当下合唱的哲理化属性

当科技的因素成为作用于当代社会文化语境的主导力量时,传统思维上原有的合唱审美活动被科学思维所动摇,技法作为一种价值观念的强化而渗透到合唱艺术中,创作的图解化、"形象"塑造的忽略化,使合唱呈现出哲理化日益增强的趋势。当代合唱发展形态已由审美活动的精神层面嬗变成哲学活动的解析行为。对"观念"的追求替代了以往对人格理念的寄托以及精神气韵的传递。

微积分图解教学创新方法研究

随着我国微积分教育课程创新改革的不断深人,微积分图解教学日益受到我国教育工作者的重点关注,为此进行微积分图解教学创新方法方面的研究。首先对微积分图解教学相关的方法策略进行了阐述,重点讲述了授课设计等三个方面;随后采用背景可视化图解法来实现微积分图解教学的方法创新;最后采用实验论证的方法对背景可视化图解法的有效性进行验证,主要采用的评价指标是图解正确率。

“偷菜游戏”的大众文化解读

作为网络游戏的农场游戏中的"偷菜游戏"近年来风靡网络,制造了网络游戏的新奇观,成为社会中瞩目的焦点,也成为大众文化的经典的案例,虽然偷菜游戏收到的评价褒贬不一,但是游戏上体现出来的大众文化的特性却是极其明显的,且具有代表性,成为互联网大众文化历史上的标志性对象。

Coherence cube enhancement based on local histogram specification

Coherence analysis is a powerful tool in seismic interpretation for imaging geological discontinuities such as faults and fractures. However, subtle faults or fractures of one stratum are difficult to be distinguished on coherence sections （time slices or profiles） due to interferences from adjacent strata, especially these with strong reflectivity. In this paper, we propose a coherence enhancement method which applies local histogram specification （LHS） techniques to enhance subtle faults or fractures in the coherence cubes. Unlike the traditional histogram specification （HS） algorithm, our method processes 3D coherence data without discretization. This method partitions a coherence cube into many sub-blocks and self-adaptively specifies the target distribution in each block based on the whole distribution of the coherence cube. Furthermore, the neighboring blocks are partially overlapped to reduce the edge effect. Applications to real datasets show that the new method enhances the details of subtle faults and fractures noticeably.

Solubility and phase diagrams of hydroxyl manganese chloride

In the course of the basic research on the ammonia-evaporation reaction of manganese monoxide （MnO）, hydroxyl manganese chloride （Mn2（OH）3Cl） was found. The solubility and phase diagrams of the hydroxyl manganese chloride were investigated. The aqueous thermostat and vibrating bed were used to determine the solubility of hydroxyl manganese chloride in water, ammonium chloride and manganese chloride system, and the phase diagrams of multicomponent system were drawn. The research results indicate that hydroxyl manganese chloride has been produced in laboratory and is in favor of the solid-liquid separation at high temperature.

Automatic Road Extraction Using Particle Filters from High Resolution Images

Road extraction plays an important role in many applications such as car navigation, but the manual extraction of roads is a laborious, tedious task. To speed the extraction of roads, an approach based on particle filtering to extract automatically roads from high resolution imagery is proposed. Particle filtering provides a statistical framework for propagating sample-based approximations of posterior distributions and has almost no restriction on the ingredients of the model. We integrate the similarity of grey value and the edge point distribution of roads into particle filtering to deal with complex scenes. To handle road appearance changes the tracking algorithm is allowed to update the road model during temporally stable image observations. A fully automatic initialization strategy is used. Experimental results show that the proposed approach is a promising and fully automatic method for extracting roads from images, even in the presence of occlusions.

A unified graphical method for integration of hydrogen networks with purification reuse

Introducing purifiers into hydrogen network can enhance the recovery and reuse of hydrogen in refineries, further reducing the consumption of fresh hydrogen. Based on previous graphical methods, this work proposes a simple and unified graphical method for integration of hydrogen networks with purification processes. Scenarios with different hydrogen concentrations of purified product can be analyzed by the unified procedure. As a result, the maximum hydrogen saved by purification reuse can he identified and the corresponding purification process can be optimized, The proposed method is easy and non-iterative, and it is valid to purification processes with any feed concentration. A conventional hydrogen network is analyzed to test the effectiveness of the proposed method.

Multiresolution Fusion of Remote Sensing Images Based on Resolution Degradation Model

A new method based on resolution degradation model is proposed to improve both spatial and spectral quality of the synthetic images. Some ETM+ panchromatic and multispectral images are used to assess the new method. Its spatial and spectral effects are evaluated by qualitative and quantitative measures and the results are compared with those of IHS, PCA, Brovey, OWT(Orthogonal Wavelet Transform) and RWT(Redundant Wavelet Transform). The results show that the new method can keep almost the same spatial resolution as the panchromatic images, and the spectral effect of the new method is as good as those of wavelet-based methods.

The Structure of the Optimal Solution Set on the Shortest Paths for Networks

Abstract： The shortest path problem in a network G is to find shortest paths between some specified source vertices and terminal vertices when the lengths of edges are given. The structure of the optimal solutions set on the shortest paths is studied in this paper. First, the conditions of having unique shortest path between two distinguished vertices 8 and t in a network G are discussed; Second, the structural properties of 2-transformation ^-G graph G on the shortest-paths for G are presented heavily.

Improving signal to noise ratio of seismic profiles using an image processing technique

This paper introduces an image processing technique into seismic data processing as a noise attenuation technology. The image separation of the seismic profile is obtained by using grating operators based on different time dips and a set of relative single dip profiles is obtained. A high signal to noise ratio profile can be obtained during reconstruction by statistical weighting. With further processing analysis and geological study, a high signal to noise profile that can meet geological requirements can be produced. The real data examples show that the signal to noise ratio of the profile is greatly improved, the resolution of the profile is maintained, and the fault terminations are much clearer after using the image processing method.

Primary stage of solar energy use in architecture-Shadow control

In architecture and urban design,solar energy plays an important role to save fossil energy and preserve environment.Passive or active use of this energy needs especial consideration in the preliminary stage of design to the probable shadows.This work will answer two questions:1) How is it possible to distinguish shadow need periods during a year in a specific climate-2) How is it possible to produce shadow in hot periods without being deprived of pleasant sunshine in cold periods-In this regard,it will introduce the usage process and opportunities of "shading mask" of Olgyay as an easy and useful graphical method in six steps.At the end,different ways of using this method in design will be discussed.Several research projects that have been done in past 30 years will support the argument as examples of this method.

Research of the Late Quaternary Recent Activity of the Middle Segment of Kouquan Fault

Systematic research of the characteristics of late Quaternary activity of the middle part of Kouquan fault has been done through conducting 1∶50000 geologic mapping combining with remote sensing interpretation of spot imaging, field validating and chronology research of the research area. Studies suggest that the middle part of Kouquan fault has had strong activity since the late Quaternary which controls the tectonic evolvement of the nearby mountains and Datong basin. The recent activity of this fault has faulted the sandy gravel layers of T1 terrace and the lower part of dark loessial soils over the terrace on the north of Chanfang village. The maximum vertical displacement is over 3m in the area between Xiaoyukou village and Louzikou village, and to the south of Dayukou village and the north of Emaokou village, the displacement decreases to 0.5m and 0.25m respectively. Based on the recent faulted landforms and combined with dating, we determined the age of recent activity of the fault in the research area to be between 7.71ka B.P. to 3.00 ka B.P. Discussions are made on this in combination with previous research.

Challenges in Forensic DNA Profiling and Critical Issues in Interpretation of STR Profiles

Rapid advancements in forensic DNA technology has resulted in its increasing use to resolve crime cases, particularly in the detection of low-level DNA traces. This has been made possible by the increasing sensitivity of STR typing kits. Low-template DNA analysis requires careful consideration of the derived stochastic variations that lead to heterozygote imbalance, allele drop-out and increased detection of background contamination. The relevance of the evidence and the probative value of the DNA profile are important issues in the evaluation of forensic evidence.

Study on Technology for Quenching Catalytic Pyrolysis Gas

This article describes the application of technology for quenching catalytic pyrolysis gas at the Daqing commercial CPP test unit and the Shenyang commercial CPP production unit.On the basis of results for application of the Shenyang CPP unit this paper puts forward an improved process flow scheme for quenching the pyrolysis gas and made calculations using the process flowsheet software.Case Ⅰ of the process flow scheme,which is designed for full circulation of slurry,intends to use the pyrolysis light oil and fresh feed oil as the quenching media with the product slurry oil and fresh feedstock being discharged from the quench cooler bottom and routed directly to the reactor so that the fresh feed oil can be preheated prior to pyrolysis.Case Ⅱ of the process flow scheme intends to adopt recycle oil as the quenching medium with the product slurry and recycle oil being discharged from the quench cooler bottom to the fractionator,which then delivers the slurry from the bottom.These two cases for improving the process flow diagram can all effectively control the density and viscosity of the quenching medium to secure the smooth operation of quench cooler.

基于数字化技术的规划设计思维模式与表达

传统的图示设计思维表达方式及单项线性设计方法,多年来在规划设计领域发挥了及其重要的作用。但随着数字化技术的发展,其在科学性、精确性、真实性、效率性、细节表达等方面都存在一定欠缺与局限性,因此以动态、优化、计算机为核心的参数化表达方式及现代设计方法,带来了规划设计领域的革新。

基于产品族表的曲柄摇杆机构设计与分析

本文将参数化技术和产品族表技术应用于曲柄摇杆机构急回运动的图解设计法中,提出了一种按急回运动要求设计曲柄摇杆机构的参数化图解法。将最小传动角与急回运动设计图解相结合,建立了用参数化图解法进行曲柄摇杆机构急回运动设计的几何模型。通过约束的施加、变量的定义和实例化赋值,自动获得了在不同设计参数驱动下,曲柄摇杆机构的设计方案简图。最后通过多组数据的对比分析,阐述了影响机构最小传动角变化的相关因素以及机构在何时将获得最佳传力性能。