“看我72变”之第三变 金箍棒，长!长!长!

“我只用双节棍，哼哼哈兮；快使用双节棍，哼哼哈兮……”这段歌词不陌生吧，周杰伦把双节棍耍得风生水起。不过，这根两节的棍子再威风也威风不过一根一节的棍子。那根棍子上天入地，打人降妖，无所不能。猜猜它的名字!呵呵，稍稍用心的孩子就能从题目中发现，它就是孙悟空的金箍棒。

Influence of main site factors on Fraxinus mandshurica (Oleaceae) plantation

the investigation was carried out on 10-year-old plantation of Fraxinus mandshurica in Mao抏r Mountain Experimental Station of Northeast Forest University. Tree height (H), diameter at breast height (D1.3) and the increment of tree height in 5 years (H5), the thickness of humus layer, as well as the soil moisture were measured for the plantation and the growth indexes (H, D1.3, H5) for different site conditions were analyzed. The results showed that main site factors influencing the growth of Fraxinus mandshurica were soil moisture, gradient and location of slope in order. The growth of Fraxinus mandshurica was better on the middle- or up-slope site than on the down-slope site. Soil moisture and late frost caused by terrain are the main reasons that limit the growth of Fraxinus mandshurica plantation.

The generalized Chapman-Richards function and applications to tree and stand growth

The generalized Chapman-Richards model was derived from the Chapman-Richards function in which parameters h, k and m were unconstrained. Based on the structure of solutions and biological interpretations, the model could be classified into eight cases (three categories) at all and among them only 4 kinds of cases are suitable in forestry that represent four typical growth patterns of trees and stands. For each of 4 equations, the model properties and biological interpretations for parameters were discussed in detail. The generalized Chapman-Richards model was capable of describing a wide range of growth curves that was asymptotic or nonasymptotic, with or without inflection point. In order to illustrate the versatility of the model, it was fitted to a group of data sets concerning the DBH growth of cryptomeria plantations with 4 initial densities and the DBH and height growth of natural Korean pine tree. Comparing the generalized Chapman-Richards function and the Schnute model, it was found that the parameters and expressions of the two models were interchangeable in theory, and the fitting results were explicitly identical in empirical applications.

Factor-structure of economic growth in E-commerce

In order to analyze the factors having effect on economic growth of E commerce, the economic growth process of E commerce is divided into three stages; growth stage, stabilization stage and re growth stage. These three different stages are analysed using several economic growth theories, a set of factor structure is proposed for each stage of the economic growth process of E commerce.

A new synonym of Acompus rufipes(Wolff)(Heteroptera:Lygaeoidea:Rhyparochromidae)

The following new synonymy is proposed： Acompus rufipes （Wolff, 1804） = Heterogaster minimus Zou ＆ Zheng, 1981, syn. nov. Habitus photos and male genitalia illustrations of this species are presented.

Post-Crisis Remodeling of the Economy for the Sustainable Growth of South Eastern European （SEE） Countries

Every bigger economic crisis, as the current one, to separate national economies as well. However, leaves behind a huge material damage to the world economy and such crises remind national authorities of the mistakes done in the past while creating and running macroeconomic policy and teach them how they should overcome these crises in the upcoming period. The economic growth model of the selected South Eastern European （SEE） economies （Albania, Bosnia, Macedonia, Serbia, Slovenia, Croatia, Bulgaria, and Montenegro） during pre-global economic crisis was based mainly on foreign demand and capital inflows which created big external imbalances in those countries. It was the main reason why those countries were exposed to big vulnerability of external shocks. But, the crisis reshapes the world economic map. Competition on world markets gets new forms and players. The lessons learnt from economic crisis say that there is a need for revising the pre-crisis economic growth model in the selected countries as they are less vulnerable to external shocks. New economic model will enable their long-lasting and more sustainable economic growth in the future. One approach of remodeling their economy is presented in this paper. The main finding of this research is that instead of experiencing external ＂push＂ factors for economic growth by the governments, a promotion of internal resources is needed in order to enable ＂the catching up＂ process of these countries to continue. But, all those countries are members or candidates for becoming European Union （EU） members. That means there is no room for application on entirely new economy growth model, since those countries have to create economic model which has to be convergent to the EU one. There must be different approaches by individual countries in remodeling their economies. The findings of this survey are intended to remind the policy makers of the selected SEE countries of the mistakes they made before and during the economic crisis and the need and directions for remodeling their economies in the post-crises period that will enable their long-lasting and more sustainable economic growth in the future. The position assumed for this research is interpretative using qualitative methods of research. In order to ensure comparability among results, the proposed methodological design will be multiple-case study research on the selected SEE economies.

Queue Size Distribution of Geo/G/1 Queue Under the Min(N,D)-Policy

This paper considers a discrete-time Geo/G/1 queue under the Min（N, D）-policy in which the idle server resumes its service if either N customers accumulate in the system or the total backlog of the service times of the waiting customers exceeds D, whichever occurs first （Min（N, D）-policy）. By using renewal process theory and total probability decomposition technique, the authors study the transient and equilibrium properties of the queue length from the beginning of the arbitrary initial state, and obtain both the recursive expression of the z-transformation of tile transient queue length distribution and the recursive formula for calculating the steady state queue length at arbitrary time epoch n＋. Meanwhile, the authors obtain the explicit expressions of the additional queue length distribution, l^trthermore, the important relations between the steady state queue length distributions at different time epochs n , n and n＋ are also reported. Finally, the authors give numerical examples to illustrate the effect of system parameters on the steady state queue length distribution, and also show from numerical results that the expressions of the steady state queue length distribution is important in the system capacity design.

Development and test of a multifactorial parameterization scheme of land surface aerodynamic roughness length for flat land surfaces with short vegetation

Aerodynamic roughness length is an important physical parameter in atmospheric numerical models and microme- teorological calculations, the accuracy of which can affect numerical model performance and the level of micrometeorological computations. Many factors influence the aerodynamic roughness length, but formulas for its parameterization often only con- sider the action of a single factor. This limits their adaptive capacity and often introduces considerable errors in the estimation of land surface momentum flux （friction velocity）. In this study, based on research into the parameterization relations between aerodynamic roughness length and influencing factors such as windrow conditions, thermodynamic characteristics of the sur- face layer, natural rhythm of vegetation growth, ecological effects of interannual fluctuations of precipitation, and vegetation type, an aerodynamic roughness length parameterization scheme was established. This considers almost all the factors that af- fect aerodynamic roughness length on flat land surfaces with short vegetation. Furthermore, using many years＇ data recorded at the Semi-Arid Climate and Environment Observatory of Lanzhou University, a comparative analysis of the application of the proposed parameterization scheme and other experimental schemes was performed. It was found that the error in the friction velocity estimated by the proposed parameterization scheme was considerably less than that estimated using a constant aero- dynamic roughness length and by the other parameterization schemes. Compared with the friction velocity estimated using a constant aerodynamic roughness length, the correlation coefficient with the observed friction velocity increased from 0.752 to 0.937, and the standard deviation and deviation decreased by about 20% and 80%, respectively. Its mean value differed from the observed value by only 0.004 m s-l and the relative error was only about 1.6%, which indicates a significant decrease in the estimation error of surface-layer momentum flux. The test results show that the multifactorial universal parameterization scheme of aerodynamic roughness length for flat land surfaces with short vegetation can offer a more scientific parameteriza- tion scheme for numerical atmospheric models.

Bipartite Graphs K_(n,n+r)-A(|A|≤3) Determined by Their Cycle Length Distributions

The cycle length distribution of a graph G of order n is a sequence （c1 （G）,…, cn （G））, where ci （G） is the number of cycles of length i in G. In general, the graphs with cycle length distribution （c1（G） ,…,cn（G）） are not unique. A graph G is determined by its cycle length distribution if the graph with cycle length distribution （c1 （G）,…, cn （G）） is unique. Let Kn,n＋r be a complete bipartite graph and A lohtaib in E（Kn,n＋r）. In this paper, we obtain： Let s 〉 1 be an integer. （1） If r = 2s, n 〉 s（s - 1） ＋ 2｜A｜, then Kn,n＋r - A （A lohtain in E（Kn,n＋r）,｜A｜ ≤ 3） is determined by its cycle length distribution; （2） If r = 2s ＋ 1,n 〉 s^2 ＋ 2｜A｜, Kn,n＋r - A （A lohtain in E（Kn,n＋r）, ｜A｜ ≤3） is determined by its cycle length distribution.