关于L-Fuzzy子集层仿紧性的注记

文[2]曾指出L－Fuzzy拓扑学中关于L－Fuzzy子集的几种仿紧性不是一般拓扑学中子集仿紧性的真正推广,即它们不以分明子集仿紧性为特款,进一步修正了几个定义并重新证明了有关的几个定理,在这篇文章中,我们拟对层仿紧性进行修正并重证相关的几个定理。     

Common loss-of-function variants of the epidermal barrier protein filaggrin are a major predisposing factor for atopic dermatitis

Atopic disease, including atopic dermatitis (eczema), allergy and asthma, has increased in frequency in recent decades and now affects approximately 20% of the population in the developed world. Twin and family studies have shown that predisposition to atopic disease is highly heritable. Although most genetic studies have focused on immunological mechanisms, a primary epithelial barrier defect has been anticipated. Filaggrin is a key protein that facilitates terminal differentiation of the epidermis and formation of the skin barrier. Here we show that two independent loss-of-function genetic variants (R510X and 2282del4) in the gene encoding filaggrin (FLG) are very strong predisposing factors for atopic dermatitis. These variants are carried by approximately 9% of people of European origin. These variants also show highly significant association with asthma occurring in the context of atopic dermatitis. This work establishes a key role for impaired skin barrier function in the development of atopic disease.     

玉米不同垅作及群体结构对产量影响初报

以玉米三种垅作形式为主要内容,研究不同垅作的增产机制及相应的群体结构,提高玉米大面积连片种植的单产水平。试验表明大垅和大小垅种植方式具有保持和提高土壤温度、水分、抗旱抗涝的作用,同时适于密植,光能利用率高等老年,吡常规小垅玉米增产１４．０％－２２．８５。适宜密度６－７万株／hm^2。图３,表２。     

交通荷载作用下低路堤动力特性试验研究

结合连盐高速低路堤,对路堤进行了动应力、振动响应等现场测试,分析了路基中附加动应力及振动位移的变化规律.并且通过应力控制的室内动三轴试验,采用一定的动应力频率、不同的循环应力比来模拟交通荷载,研究了在循环荷载作用下,连盐高速公路饱和软粘土的轴向累计应变、孔隙水压力和轴向周期应变软化的变化规律.实验结果表明:路堤中动应力和振动位移随行车速度和车重的增加而增加,随深度的增加而降低,有效影响深度达2.5 m;原状土的临界循环应力比远大于重塑土,承受循环应力能力高于重塑土.因此,要加强浅层路基强度,同时要减少对底部下卧层软粘土的扰动.其结果可为在软土地基上设计和施工低路堤高速公路提供有益的参考.     

煤粉高压密相气力输送特性

在输送压力可达4.0MPa,固体输送流率达840kg/h的仓式泵高压气力输送试验装置上进行粉煤高压浓相气力输送试验研究.考察了流化风量、充压风量、输送总差压对煤粉输送量、固气比的影响.研究表明:随着流化风量的增大,煤粉输送量逐渐增大,固气体积比先增大然后减小;当煤粉在发料罐内被充分流化后,再加大充压风量,固气体积比逐渐减小,而煤粉输送量略有增加;输送总压差对煤粉输送量有显著影响,随着总压差的增加,煤粉输送量呈线性增加.研究结果对高压超浓相气力输送系统的设计、运行和控制具有指导作用.     

Impact of the RMB Joining in the SDR Basket on Its Internationalization from the Perspective of Risk Spillover

For evaluating the influence of the Chinese renminbi(RMB) joining in the special drawing right(SDR) basket on RMB's internationalization, the authors systemically study the risk spillover networks and examine the dynamic relationship of exchange rates among the SDR currencies including the US dollar(USD), European Union euro(EUR), Japanese yen(JPY) and British pound(GBP).The empirical results demonstrate that the USD takes a dominant position and holds the biggest risk spillover to other currencies, and the RMB's inclusion to the SDR basket makes the risk spillover to get average, giving rise to the SDR currency system more stable to a certain degree. The inclusion of the RMB in the SDR not only can reduce the systematic risk of the SDR, but also has a certain impact on the international exchange rate markets. Nowadays, in front of the growing trade friction, more such researches could help to effectively deal with the currency disputes.     

Behavior Model Construction for Client Side of Modern Web Applications

Most of the behavior models with respect to Web applications focus on sequencing of events,without regard for the changes of parameters or elements and the relationship between trigger conditions of events and Web pages.As a result,these models are not sufficient to effectively represent the dynamic behavior of the Web2.0 application.Therefore,in this paper,to appropriately describe the dynamic behavior of the client side of Web applications,we define a novel Client-side Behavior Model(CBM) for Web applications and present a user behavior trace-based modeling method to automatically generate and optimize CBMs.To verify the effectiveness of our method,we conduct a series of experiments on six Web applications according to three types of user behavior traces.The experimental results show that our modeling method can construct CBMs automatically and effectively,and the CBMs built are more precise to represent the dynamic behavior of Web applications.     

Connecting informal networks to management of tacit knowledge

The relationship between tacit knowledge and informal networks has not been fully explored.Tacit knowledge cannot be well managed directly,because it is deeply embedded in individual actions and experiences.This study proposes an approach to managing informal networks as a new middle way to facilitate the sharing and transferring of tacit knowledge,owing to the fact that tacit knowledge is mostly shared and transferred through informal networks.To support the idea of the approach,an empirical case study of applying the approach to management of a large scientific project is also included.Our findings suggest that informal networks play essential roles for management of tacit knowledge,and thus good management of informal networks can lead to efficient sharing and transferring of tacit knowledge.     

Optimal control of multisolution ordinary differential equations in the absence of convexity

<正> In this paper,the authors study an optimal control problem governed by a class of multistateordinary differential equations in the absence of convexity.To overcome the difficulty that thecorresponding approximate optimal control problem may have no solution,relaxed controls are introduced.With the help of relaxation theory,Pontryagin's maximum principle for the optimal pairs ofthe original control problem is obtained.In the end of this paper,the authors discuss the applicationof the maximum principle by an example.     

Solving the perspective-three-point problem using comprehensive Gröbner systems

A complete solution classification of the perspective-three-point (P3P) problem is given by using the Gröbner basis method. The structure of the solution space of the polynomial system deduced by the P3P problem can be obtained by computing a comprehensive Gröbner system. Combining with properties of the generalized discriminant sequences, the authors give the explicit conditions to determine the number of distinct real positive solutions of the P3P problem. Several examples are provided to illustrate the effectiveness of the proposed conditions.