内蒙古四子王旗道老格磁异常特征解析

笔者总结了研究区的地质特征,并选择有效的物化探手段对5个新发现的地面高精度磁测异常进行剖析,随后运用钻探工程对各磁异常进行了深部验证,有效的阐明了各磁异常的起因,其中Ⅰ、Ⅱ、Ⅲ和Ⅳ磁异常与隐伏的地层或岩性有关,Ⅴ磁异常与矿化关系密切。本文的研究可为该地区的磁异常解析提供借鉴。

格物体道:宋瓷艺术的接受方式探析

宋代语境中的瓷器艺术接受具有复杂性和动态性的特征。格物体道是宋瓷艺术接受的重要方式,受到宋代器以载道的器物文化和格物穷理的儒学精神的影响。在格物体道的艺术接受过程中,宋瓷艺术的接受主体、接受动机、接受心境和接受路径都呈现出独特的表征。

清宫西洋樂师德理格

康熙年间,一位西洋传教士在宫中教授皇子乐理并参与编纂《律吕正义》,备受皇帝恩宠:旋即,触犯“龙颜”,被捕下狱。此人便是意大利人德理格。

《道连·葛雷的画像》隐含作者研究

从"隐含作者"的角度入手,分析小说《道连·葛雷的画像》,揭示作者在作品人物面具下隐藏的"第二自我",以及隐藏内心真实渴望的情节设置。透过面具可以看出隐藏作品之后的真实。

PbZr_(0.3)Ti_(0.7)O_3/PbTiO_3超晶格的热释电性研究

基于朗道-金兹堡格-德文希尔(Landau-Ginzburg-Devonshire)热力学理论,我们研究了由PbZr0.3Ti0.7O3(PZT)与PbTiO3(PT)两种组份组成的超晶格的热释电性,并且考虑了两组份之间的失配应变的影响.我们探讨了界面耦合强度、组分厚度比例以及失配应变等对超晶格的极化强度和热释电性的影响.计算结果表明,这种铁电超晶格材料具有巨大的热释电系数.因此,我们可以通过调节界面耦合强度、组份比例等方法达到调控热释电性的目的,为实验和应用研究提供一个可靠而有效的方法.

Fertilizer Overuse in China:Empirical Evidence from Farmers in Four Provinces

[Objective] This paper aims to empirically analyze the situation of fertilizer overuse in China, considering that fertilizer, important for China＇s crop production, has brought serious environmental pollution to China due to over application. [Method] Based on field survey data in four provinces of China, the magnitude of fertilizer overuse at farm level was empirically analyzed with Cobb-Douglas Produc- tion Function Method and profit optimization theory in the research. [Result] The resuits show that by average, 110.5 kg of chemical fertilizer were applied per mu of land, and 46.9 kg fertilizer was overused, occupying 42.5%. [Conclusion] There is large potential to reduce the overused amount and it is of great importance to re- duce fertilizer overuse effectively, which needs further intensive study.

水电站进水口排沙底孔的型式

在多沙河流上,无论是高坝大库的高水头电站,还是低水头河床式枢纽,电站进水口的取水排沙历来是一个倍受关注的问题。文中介绍了2个电站进水口排沙底孔的泥沙模型试验情况,提出了一种新的“格栅式排沙廊道+排沙底孔”的组合型式(简称格栅式排沙底孔),取得了理想的排沙效果,较好地解决了工程实际问题。格栅式排沙底孔对其他同类型工程具有一定的借鉴作用。

Simulation and comparison of several numerical algorithms for solving ballistic differential equations

Several numerical methods of differential equations and their applications in ballistic calculation are discussed for the purpose of simplification of the dynamic differential equations of projectile trajectory.Program simulations of Euler method,Heun method,lassic fourth-order Runge Kutta（RK4）method,ABM method and Hamming method are achieved based on Matlab.In addtion,the approximate solutions,local truncation errors and calculation time of the dynamic differential equations are obtained.By analyzing the simultaion results,the advantages and disadvantages of these methods are compared,which provides a basis for choice of ballistic calculation methods.

谈古镇摄影

古镇摄影不单纯是建筑风景摄影,还包含了人文摄影,古建筑结合人文,能赋予片子更深的精神内涵。人文,泛指人类社会各种文化现象,体现人精神上的东西,具有不同的地域性,人文摄影就是用镜头来记录和传达这些文化。如果从唯美角度的拍摄,你就要选择天时、地利、人和,这一组古镇图片,我分别选择了不同的时间段,不同的人文事件,不同的气候、不同的摄影理念进行创作,才会有于众不同的影像。

Rules Governing Pressure Distribution for a Traveling Charge Under the Condition of Lagrange Hypothesis

Aim To study the rules governing pressure distribution of traveling charge under the condition of Lagrange hypothesis. Methods\ The study is based on the laws of conservation of momentum and energy. Results\ The gas flow velocity distribution formula at the back of a projectile and the momentum equation of a traveling charge are deduced, and rules governing their pressure distribution under the Lagrange hypothesis conditions are established. The pressure distribution of a traveling charge is compared with that of a conventional charge. Conclusion\ The pressure distribution in the bore of a traveling charge can be accurately predicted. A parabolic pressure distribution type is revealed.

Study on the Price Design and Contract Stability of "Company + Farmer" Model with Time Preference under Double Moral Hazards

The double moral hazard of ＂company ＋ farmer＂ and the time preference cost of company and farmer was analyzed. According to static game model, it re-vealed that the reason for low compliance rate of ＂company ＋ farmer＂ model was the existence of market risk, namely, the fluctuation of market price, and the stable market price in contracts was actualy a kind of interval, instead of a specific value. Furthermore, the effect of default penalty, market transaction cost and time prefer-ence cost on the stability of contract was studied. The results showed that default penalty, market transaction cost and time preference cost had positive influence on the price interval range of a contract.

Projectively flat exponential Finsler metric

In this paper, we study a class of Finsler metric in the form F=αexp(β/α)+εβ, where α is a Riemannian metric and β is a 1-form, ε is a constant. We call F exponential Finsler metric. We proved that exponential Finsler metric F is locally projectively flat if and only if α is projectively flat and β is parallel with respect to α. Moreover, we proved that the Douglas tensor of expo-nential Finsler metric F vanishes if and only if β is parallel with respect to α. And from this fact, we get that if exponential Finsler metric F is the Douglas metric, then F is not only a Berwald metric, but also a Landsberg metric.

Fish gut microecosystem: a model for detecting spatial pattern of microorganisms

The spatial distribution pattern of organisms is a basic issue in understanding the mechanisms of community assembly. Although the spatial distributions of animals and plants have been well studied,those of microorganisms are still being debated. In this study, we used a fi sh gut microecosystem to detect the spatial pattern of microbes, because it can provide a relatively unifi ed and stable environment. Results suggest that the turnover of intestinal bacterial assemblages showed a weak but highly signifi cant negative correlation between similarity and distances in the microbial community, in respect of both grass carp intestinal loci distances and the geographical distance between fi sh sampling sites. Our results also suggest that intestinal bacterial assemblages responded to differences within the external environment and within different parts of the fi sh themselves. These results show that some, or possibly all, microbes are restricted in their distribution and that environmental factors are also important infl uences on the structure of intestinal bacterial assemblages. The fi sh gut microecosystem is useful in promoting study of the spatial distribution patterns of microorganisms.

Calculation grid and turbulence model for numerical simulating pressure fluctuations in high-speed train tunnel

Calculation grid and turbulence model for numerical simulating pressure fluctuations in a high-speed train tunnel are studied through the comparison analysis of numerical simulation and moving model test.Compared the waveforms and peak-peak values of pressure fluctuations between numerical simulation and moving model test,the structured grid and the SST k-ωturbulence model are selected for numerical simulating the process of high-speed train passing through the tunnel.The largest value of pressure wave amplitudes of numerical simulation and moving model test meet each other.And the locations of the largest value of the initial compression and expansion wave amplitude of numerical simulation are in agreement with that of moving model test.The calculated pressure at the measurement point fully conforms to the propagation law of compression and expansion waves in the tunnel.

Bitmap lattice index in road networks

A novel technique called the bitmap lattice index(BLI) is proposed, which combines the advantages of a wireless broadcasting environment with a road network. Existing road networks are based on the on-demand method: a server's workload increases as the query request increases when a server sends a client information. To solve this problem, we propose the BLI. The BLI denotes an object and a node as 0 and 1 in the Hilbert curve(HC) map. The BLI can identify the position of a node and an object through bit information; it can also reduce the broadcasting frequency of a server by reducing the size of the index, thereby decreasing the access latency and query processing times. Moreover, the BLI is highly effective for data filtering, as it can identify the positions of both an object and a node. In a road network, if filtering is done via the Euclidean distance, it may result in an error. To prevent this, we add another validation procedure. The experiment is conducted by applying the BLI to kNN query, and the technique is assessed by a performance evaluation experiment.

Quantum Tunneling of Two-Species Cold Bosonic Atoms in Optical Lattices

In this letter,we have studied quantum tunneling of two-species cold bosonic atoms in an optical lattices.When the optical lattice is not infinitely long and the spin excitations are not in the long-wavelength limit,quantumtunnelings are presented.

Road Centrality and Landscape Spatial Patterns in Wuhan Metropolitan Area,China

Road network is a corridor system that interacts with surrounding landscapes,and understanding their interaction helps to develop an optimal plan for sustainable transportation and land use.This study investigates the relationships between road centrality and landscape patterns in the Wuhan Metropolitan Area,China.The densities of centrality measures,including closeness,betweenness,and straightness,are calculated by kernel density estimation(KDE).The landscape patterns are characterized by four landscape metrics,including percentage of landscape(PLAND),Shannon′s diversity index(SHDI),mean patch size(MPS),and mean shape index(MSI).Spearman rank correlation analysis is then used to quantify their relationships at both landscape and class levels.The results show that the centrality measures can reflect the hierarchy of road network as they associate with road grade.Further analysis exhibit that as centrality densities increase,the whole landscape becomes more fragmented and regular.At the class level,the forest gradually decreases and becomes fragmented,while the construction land increases and turns to more compact.Therefore,these findings indicate that the ability and potential applications of centrality densities estimated by KDE in quantifying the relationships between roads and landscapes,can provide detailed information and valuable guidance for transportation and land-use planning as well as a new insight into ecological effects of roads.

Wigner Function for Klein-Gordon Landau Problem

First we calculate the Wigner phase-space distribution function for the Klein-Gordan Landau problem ona commmutative space.Then we study the modifications introduced by the coordinate-coordinate noncommuting andmomentum-momentum noncommuting, namely, by using a generalized Bopp’s shift method we construct the Wignerfunction for the Klein-Gordan Landau problem both on a noncommutative space (NCS) and a noncommutative phasespace (NCPS).

The Hegelian Tragedy, Negative Dialectic and Ethical Substance in Sophocles＇ Antigone

Breaking with Aristotle＇s theory of tragedy in which the grand magnitude of the spirit of the tragic hero somehow trapped and misguided by a certain tragic flaw arouses the audiences＇ emotional intensity of pity and fear for the functioning of catharsis, Hegel analyzes the structure of tragedy in terms of the social conflict, in the case of Sophocles＇ Antigone, between the ruler Creon and the rebel Antigone, the patriarchal state and the individual woman, the civil codes and the divine law. Rejecting Creon＇s dictatorship and performing civil disobedience, Antigone intentionally buries the dead body of her brother Polyneices at the cost of being sentenced to death. Through this sacrifice, Antigone exposes the structural fissure of the civil society embedded in decaying morality for realizing the higher ideal of divine law and ethics. Through Antigone＇s sacrifice, the paradox of self-denial and self-elevation manifests the inner principle of dialectic through which the very opposite forces of contradiction engender the dynamic facets of the formation of modern civil society. As Hegelian dialectic is driven by its inner principle of negativity or negation of negation, through self-denial, Antigone transcends the moral codes of the mundane world for reaching the higher divine will. Yet, this dialectical ascending does not indicate a transcendent hero beyond the human world; instead, through the means of self-denying sacrifice, Antigone accomplishes the purpose of the divine will and conveys the divine spirit incarnated in the human flesh. For Hegelian tragic hero, the external and internal conflicts lead to the realization of self-consciousness and the ultimate consummation of heroic identity. Instead of being conditioned by Aristotelian tragic flaw and unconquerable fate, for Hegel, Antigone explicates the modern rebellious spirit of free will, and this martyrdom, not in the sense of scapegoat as the passive substitute for the sin of collective human community, presents a modern sense of tragic hero, an incarnated flesh invested with politically radical spirit. The flesh figure of heroine Antigone exemplifies the immanent power of ethical substance and dialectically transforms the divine will into the earthly spirit. Thus, this paper aims to investigate into the shift from Aristotle＇s concept of tragic hero to Hegelian dialectic tragedy and further examines how Hegelian tragic hero engenders the historical move into Western modernity through negative dialectic and accomplishes the self-other positioning of ethical substance presented in Sophocles＇ Antigone.

Sensitive factors research for track-bridge interaction of Long-span X-style steel-box arch bridge on high-speed railway

X-style arch bridge on high-speed railways(HSR)is one kind of complicated long-span structure,and the track-bridge interaction is essential to ensure the safety and smoothness of HSR.Taking an X-style steel-box arch bridge with a main span of450 m on HSR under construction for example,a new integrative mechanic model of rail-stringer-cross beam-suspenderpier-foundation coupling system was established,adopting the nonlinear spring element simulating the longitudinal resistance between track and bridge.The transmission law of continuous welded rail(CWR)on the X-style arch bridge was researched,and comparative study was carried out to discuss the influence of several sensitive factors,such as the temperature load case,the longitudinal resistance model,the scheme of longitudinal restraint conditions,the introverted inclination of arch rib,the stiffness of pier and abutment and the location of the rail expansion device.Calculating results indicate that the longitudinal resistance has a significant impact upon the longitudinal forces of CWR on this kind of bridge,while the arch rib’s inclination has little effect.Besides,temperature variation of arch ribs and suspenders should be taken into account in the calculation.Selecting the restraint system without longitudinally-fixed bearing and setting the rail expansion devices on both ends are more reasonable.