This paper, by introducing the principal-agent relations between a firm owner and its manager into AJ model, discusses the impact of the quantity incentive in production of the firm owner set on R＆D decision and the ...This paper, by introducing the principal-agent relations between a firm owner and its manager into AJ model, discusses the impact of the quantity incentive in production of the firm owner set on R＆D decision and the equilibriums of R＆D input and quantity output of duopoly enterprises in the reality of the departure of ownership and firm controlling capacity. With the help of the tradeoff between the firm owner＇s profit and the manager＇s revenue, the owner of the firm can thereby selects an optimal incentive on manager to optimize its profit. And finally the paper also demonstrates the improved P＆D performance and the output equilibriums in Cournot game.展开更多
初学复变函数时,对确定某些初等函数的支点,往往感到困难,下面仅就自己的学习情况谈点体会。 第一、z=∞为f（z）=multiply from j=1 to K（z-z（j0））αi支点的充要条件是sum from j=1 to k αj≠N（整数） 证明:在z=∞的充分小邻域...初学复变函数时,对确定某些初等函数的支点,往往感到困难,下面仅就自己的学习情况谈点体会。 第一、z=∞为f（z）=multiply from j=1 to K（z-z（j0））αi支点的充要条件是sum from j=1 to k αj≠N（整数） 证明:在z=∞的充分小邻域内作一简单闭曲线C,使z10,z20……zK0落于C的内域内,在C上任取一点Z0。展开更多
一、引言超细纤维以其极好的尺寸稳定性和通常合成纤维所不具备的柔软丰满的手感而越趋流行,什对超细纤维独特的染色要求,立信染整机械有限公司与丹麦汉力逊公司共同研制开发了特别适宜轻薄型超细纤维织物染色的立信AJ气流喷射染色机(F...一、引言超细纤维以其极好的尺寸稳定性和通常合成纤维所不具备的柔软丰满的手感而越趋流行,什对超细纤维独特的染色要求,立信染整机械有限公司与丹麦汉力逊公司共同研制开发了特别适宜轻薄型超细纤维织物染色的立信AJ气流喷射染色机(Fong’s Air Jet)。展开更多
Analyzing Hipparcos proper motions of 1352 O B5 stars, we have found a clear stellar warping motion that is a systematic rotation +3 8±1 1 kms -1 kpc -1 of stars about the axis pointing to the galactic center in ...Analyzing Hipparcos proper motions of 1352 O B5 stars, we have found a clear stellar warping motion that is a systematic rotation +3 8±1 1 kms -1 kpc -1 of stars about the axis pointing to the galactic center in the sense of increasing the inclination of the HI warp, and a remarkably large galactic rotation of (V 0) O-B5 = 268 7 ± 11 9kms -1 , compared with the IAU recommendation (V 0 = 220 ± 20kms -1 ), given the galactocentric distance of the sun R 0 = 8 5kpc. Combining Hipparcos proper motions and the radial velocity data, we have then studied the kinematics for 151 classical cepheids. The results show a contracting motion of the Galaxy in the solar neibourhood, V θ/θ/R =-2 60 ± 1 07kms -1 kps -1 , which is along the solar circle. In the present paper, we have also analyzed proper motions of 21000 K-M giants, and again we found a large galactic rotation (V 0) K-M = 252 6±9 5kms -1 .展开更多
Blue stragglers are a common observational fact for the Galactic clusters. Single Stellar Populations (SSPs) are basic to the studies of galaxy structre and evolution. SSPs are mainly based either on the observation o...Blue stragglers are a common observational fact for the Galactic clusters. Single Stellar Populations (SSPs) are basic to the studies of galaxy structre and evolution. SSPs are mainly based either on the observation of the integrated properties of star clusters, or on the theoretical understandings of single star evolution. Both of the two ways of making SSPs suffer from either observational uncertainties concerning field contaminations or lack of good models for close binary systems. Based on the photometry of the classical open cluster M67 and the thorough membership survey, we made a color-magnitude diagram (CMD) of high membership stars for the cluster. We will show that by including the contributions of the bright blue stragglers that is common to open clusters, the integrated properties of the clusters are quite different from tranditional SSP models. We further conclude that these blue light contributors are very important to SSP models, and may cast new lights on its applications in the studies of galaxies.展开更多
文摘This paper, by introducing the principal-agent relations between a firm owner and its manager into AJ model, discusses the impact of the quantity incentive in production of the firm owner set on R＆D decision and the equilibriums of R＆D input and quantity output of duopoly enterprises in the reality of the departure of ownership and firm controlling capacity. With the help of the tradeoff between the firm owner＇s profit and the manager＇s revenue, the owner of the firm can thereby selects an optimal incentive on manager to optimize its profit. And finally the paper also demonstrates the improved P＆D performance and the output equilibriums in Cournot game.
文摘初学复变函数时,对确定某些初等函数的支点,往往感到困难,下面仅就自己的学习情况谈点体会。 第一、z=∞为f（z）=multiply from j=1 to K（z-z（j0））αi支点的充要条件是sum from j=1 to k αj≠N（整数） 证明:在z=∞的充分小邻域内作一简单闭曲线C,使z10,z20……zK0落于C的内域内,在C上任取一点Z0。
文摘Analyzing Hipparcos proper motions of 1352 O B5 stars, we have found a clear stellar warping motion that is a systematic rotation +3 8±1 1 kms -1 kpc -1 of stars about the axis pointing to the galactic center in the sense of increasing the inclination of the HI warp, and a remarkably large galactic rotation of (V 0) O-B5 = 268 7 ± 11 9kms -1 , compared with the IAU recommendation (V 0 = 220 ± 20kms -1 ), given the galactocentric distance of the sun R 0 = 8 5kpc. Combining Hipparcos proper motions and the radial velocity data, we have then studied the kinematics for 151 classical cepheids. The results show a contracting motion of the Galaxy in the solar neibourhood, V θ/θ/R =-2 60 ± 1 07kms -1 kps -1 , which is along the solar circle. In the present paper, we have also analyzed proper motions of 21000 K-M giants, and again we found a large galactic rotation (V 0) K-M = 252 6±9 5kms -1 .
文摘Blue stragglers are a common observational fact for the Galactic clusters. Single Stellar Populations (SSPs) are basic to the studies of galaxy structre and evolution. SSPs are mainly based either on the observation of the integrated properties of star clusters, or on the theoretical understandings of single star evolution. Both of the two ways of making SSPs suffer from either observational uncertainties concerning field contaminations or lack of good models for close binary systems. Based on the photometry of the classical open cluster M67 and the thorough membership survey, we made a color-magnitude diagram (CMD) of high membership stars for the cluster. We will show that by including the contributions of the bright blue stragglers that is common to open clusters, the integrated properties of the clusters are quite different from tranditional SSP models. We further conclude that these blue light contributors are very important to SSP models, and may cast new lights on its applications in the studies of galaxies.
