In this paper, the authors give some applications of F-uniformly distributedsequences, which are suggested in their previous paper under the same title, in experimen-tal design, experiments with mixtures, geometric pr...In this paper, the authors give some applications of F-uniformly distributedsequences, which are suggested in their previous paper under the same title, in experimen-tal design, experiments with mixtures, geometric probability and simulation.展开更多
Let G(V, E) be a simple graph, A_T(?)VUE. A_T is called a total covering of G, if (?)x∈VUE, it holds that x∈A_T or xy∈A_T(y∈V\A_T) or x∈E, u∈A_T, v∈V\A_T, uv=x; A_T is called a minimum total covering, if|A_T~′...Let G(V, E) be a simple graph, A_T(?)VUE. A_T is called a total covering of G, if (?)x∈VUE, it holds that x∈A_T or xy∈A_T(y∈V\A_T) or x∈E, u∈A_T, v∈V\A_T, uv=x; A_T is called a minimum total covering, if|A_T~′|≥|A_T| for any total covering A_T~′; furthermore, |A_T| is called the total covering number of G,展开更多
本文基于《中国工业企业数据库》(1999-2007年)的相关数据,选定企业固定电话号码中的8为吉祥数字,研究了吉祥数字对企业绩效的影响。文章首先分析了带有8的吉祥电话号码的地域和行业分布特征。然后运用随机效应模型对吉祥号码和企业利...本文基于《中国工业企业数据库》(1999-2007年)的相关数据,选定企业固定电话号码中的8为吉祥数字,研究了吉祥数字对企业绩效的影响。文章首先分析了带有8的吉祥电话号码的地域和行业分布特征。然后运用随机效应模型对吉祥号码和企业利润进行了实证分析,进而用广义矩估计方法(Generalized Method of Moments,GMM)克服内生性,结果表明吉祥的数字的确会给企业利润带来正向影响。然后对数字4进行对照分析,结果从侧面验证了数字8的吉祥功能。进一步对号码进行分级研究发现电话后四位带有8的个数越多,对企业利润促进作用越大,但是这种"吉祥溢价"对企业利润的促进作用随着时间逐渐减弱并有趋同的倾向。故吉祥数字并不能给企业带来持久优势,加大企业的实力和产品优势才真正有利于企业长期发展。展开更多
Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operat...Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operating conditions on holdup and characteristic velocity were studied.By using the methodof dimensional analysis,the authors obtained two experimental correlations for estimating holdup and characteristic velocity respectively.Drop size distribution was studied photographically.The experimental results showedthat drop size distribuiion could be described by upper-limit log-normal distribution.展开更多
1. Contributions concerned with all aspects of acupuncture and tnoxibustion as f0llows are wel-come:(1) Clinical reports and observations; (2) Experimental researches; (3) Acupuncture anesthesiaand its principle; (4) ...1. Contributions concerned with all aspects of acupuncture and tnoxibustion as f0llows are wel-come:(1) Clinical reports and observations; (2) Experimental researches; (3) Acupuncture anesthesiaand its principle; (4) Education and academic lectures; (5) History and ancient literatures; (6) Re-view; (7) Information and news; (8) Acupuncture Instruments.展开更多
During two years odd period from Dec.1987 to Feb.1990,there had been repeatedly pollution-flashoverfailures on our 500 kV transmission lines,resulting in a wide scopeblackout.There were eleven 500 kV lines altogether ...During two years odd period from Dec.1987 to Feb.1990,there had been repeatedly pollution-flashoverfailures on our 500 kV transmission lines,resulting in a wide scopeblackout.There were eleven 500 kV lines altogether in North-east,East and North China power grids,where pollution-flashover failureshappened one after another on 36 transmission line towers (poles).Since 500 kV transmission lines are the main trunks of high展开更多
基金This work was supported by The Chinesse National Science Fund and Academia Sinics.
文摘In this paper, the authors give some applications of F-uniformly distributedsequences, which are suggested in their previous paper under the same title, in experimen-tal design, experiments with mixtures, geometric probability and simulation.
文摘Let G(V, E) be a simple graph, A_T(?)VUE. A_T is called a total covering of G, if (?)x∈VUE, it holds that x∈A_T or xy∈A_T(y∈V\A_T) or x∈E, u∈A_T, v∈V\A_T, uv=x; A_T is called a minimum total covering, if|A_T~′|≥|A_T| for any total covering A_T~′; furthermore, |A_T| is called the total covering number of G,
文摘本文基于《中国工业企业数据库》(1999-2007年)的相关数据,选定企业固定电话号码中的8为吉祥数字,研究了吉祥数字对企业绩效的影响。文章首先分析了带有8的吉祥电话号码的地域和行业分布特征。然后运用随机效应模型对吉祥号码和企业利润进行了实证分析,进而用广义矩估计方法(Generalized Method of Moments,GMM)克服内生性,结果表明吉祥的数字的确会给企业利润带来正向影响。然后对数字4进行对照分析,结果从侧面验证了数字8的吉祥功能。进一步对号码进行分级研究发现电话后四位带有8的个数越多,对企业利润促进作用越大,但是这种"吉祥溢价"对企业利润的促进作用随着时间逐渐减弱并有趋同的倾向。故吉祥数字并不能给企业带来持久优势,加大企业的实力和产品优势才真正有利于企业长期发展。
文摘Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operating conditions on holdup and characteristic velocity were studied.By using the methodof dimensional analysis,the authors obtained two experimental correlations for estimating holdup and characteristic velocity respectively.Drop size distribution was studied photographically.The experimental results showedthat drop size distribuiion could be described by upper-limit log-normal distribution.
文摘1. Contributions concerned with all aspects of acupuncture and tnoxibustion as f0llows are wel-come:(1) Clinical reports and observations; (2) Experimental researches; (3) Acupuncture anesthesiaand its principle; (4) Education and academic lectures; (5) History and ancient literatures; (6) Re-view; (7) Information and news; (8) Acupuncture Instruments.
文摘During two years odd period from Dec.1987 to Feb.1990,there had been repeatedly pollution-flashoverfailures on our 500 kV transmission lines,resulting in a wide scopeblackout.There were eleven 500 kV lines altogether in North-east,East and North China power grids,where pollution-flashover failureshappened one after another on 36 transmission line towers (poles).Since 500 kV transmission lines are the main trunks of high
