In order to investigate the existence of a stable long-run equilibrium relationship between economic growth and consumption in China, the relationship between the gross domestic product （GDP） and consumption in Chin...In order to investigate the existence of a stable long-run equilibrium relationship between economic growth and consumption in China, the relationship between the gross domestic product （GDP） and consumption in China was investigated by the cointegration analysis method. Using the Engle-Granger （EG） test and considering the possibility of structural changes, the impact of external economic shocks on the long-run equilibrium relationship between economic growth and consumption in China was analyzed. Analysis results show that without considering structural changes, the EG test cannot detect cointegration in the series subjected to structural changes; in considering structural changes, cointegration is successfully detected by specifying the dummy variable. In addition, the error correction models were constructed in different periods. This study verifies the existence of a long-run equilibrium relationship between economic growth and consumption in China, and this relationship has significantly changed in 1989 and 1997, respectively.展开更多
Contributions of fermions to the mass of the scalar glueball 0++are calculated at two-loop level in theframework of QCD sum rules.It slightly changes the coefficients in the operator product expansion （OPE） and shif...Contributions of fermions to the mass of the scalar glueball 0++are calculated at two-loop level in theframework of QCD sum rules.It slightly changes the coefficients in the operator product expansion （OPE） and shiftsthe mass of glueball to 1.72 ± 0.07 GeV.展开更多
We investigate the behavior of the vacuum polarization of the gauge-boson Ⅱ and the wave-function renormalization factor of the fermion A in QEDs, using the coupled Dyson-Schwinger equations for the gauge-boson and f...We investigate the behavior of the vacuum polarization of the gauge-boson Ⅱ and the wave-function renormalization factor of the fermion A in QEDs, using the coupled Dyson-Schwinger equations for the gauge-boson and fermion propagator. Using several different ansatze for the fermion-gauge-boson vertex, we find that the wave-function renormalization factor .4 and especially the vacuum polarization Ⅱ have different behaviors in the dynamical chiral symmetry breaking phase and in the chiral symmetric phase and hence in the phenomenological applications of QED3 one should choose different forms of gauge-boson propagator for these two phases. We also find that when adopting a specific ansatze of the fermion-gauge-boson vertex （ansatze （3）） the vacuum polarization function equals its one-loop perturbative result in the chiral symmetric phase. This fact suggests that in QEDs the Wigner vacuum corresponds to the perturbative vacuum.展开更多
This research intends to study the relationship between faith, media exposure, and national identity construction of youth in Pakistan. The purpose is to ascertain the level of influence of foreign and local media con...This research intends to study the relationship between faith, media exposure, and national identity construction of youth in Pakistan. The purpose is to ascertain the level of influence of foreign and local media consumption on national identity formation in terms of collective self-esteem and self-image of youth with high and low level of religiosity. A survey has been conducted from students （n = 321） between the age group of 16-19 living in Lahore. The results of this study revealed that respondents with high religiosity did not prefer to consume foreign media （r = -0.435＊＊ p 〈 0.01） whereas they did not show much preference to consume Pakistani media, either （r = 0.138＊, p 〈 0.05）. The level of religiosity and positive national identity had a strong and significant positive correlation （r = 0.619＊＊, p 〈 0.01）. This study also found that those respondents who preferred to consume foreign media texts demonstrated lower self-esteem and negative self-image as Pakistanis as compared to those who did not prefer foreign media consumption （r = -0.427＊＊, p 〈 0.01）. The researcher assumed that being Pakistani, a respondent would prefer to consume more national media texts over foreign and would have more positive national identity. However, results did not support this premise （r = 0.159＊＊, p 〈 0.01） due to the fact that the respondents did not show preference to consume Pakistani media at first hand. The study also connects theoretical understanding of faith and identity in Pakistani perspective along with an additional factor of media consumption. Thus, it strengthens the argument that strong faith positively contributes towards consolidating an individual＇s identity construction process. However, the results demonstrate that media tend to play a limited role in the process of identity construction compared to family and peers among Pakistani youth.展开更多
文摘In order to investigate the existence of a stable long-run equilibrium relationship between economic growth and consumption in China, the relationship between the gross domestic product （GDP） and consumption in China was investigated by the cointegration analysis method. Using the Engle-Granger （EG） test and considering the possibility of structural changes, the impact of external economic shocks on the long-run equilibrium relationship between economic growth and consumption in China was analyzed. Analysis results show that without considering structural changes, the EG test cannot detect cointegration in the series subjected to structural changes; in considering structural changes, cointegration is successfully detected by specifying the dummy variable. In addition, the error correction models were constructed in different periods. This study verifies the existence of a long-run equilibrium relationship between economic growth and consumption in China, and this relationship has significantly changed in 1989 and 1997, respectively.
基金Supported by the National Natural Science Foundation of China under Grant No.10775073the Special Grant for the Ph.D.Program of the Education Ministry of China under Grant No.20070055037
文摘Contributions of fermions to the mass of the scalar glueball 0++are calculated at two-loop level in theframework of QCD sum rules.It slightly changes the coefficients in the operator product expansion （OPE） and shiftsthe mass of glueball to 1.72 ± 0.07 GeV.
基金The project supported in part by National Natural Science Foundation of China under Grant Nos, 10175033 and 10135030 and the Research Fund for the Doctoral Program of Higher Education under Grant No. 20030284009
文摘We investigate the behavior of the vacuum polarization of the gauge-boson Ⅱ and the wave-function renormalization factor of the fermion A in QEDs, using the coupled Dyson-Schwinger equations for the gauge-boson and fermion propagator. Using several different ansatze for the fermion-gauge-boson vertex, we find that the wave-function renormalization factor .4 and especially the vacuum polarization Ⅱ have different behaviors in the dynamical chiral symmetry breaking phase and in the chiral symmetric phase and hence in the phenomenological applications of QED3 one should choose different forms of gauge-boson propagator for these two phases. We also find that when adopting a specific ansatze of the fermion-gauge-boson vertex （ansatze （3）） the vacuum polarization function equals its one-loop perturbative result in the chiral symmetric phase. This fact suggests that in QEDs the Wigner vacuum corresponds to the perturbative vacuum.
文摘This research intends to study the relationship between faith, media exposure, and national identity construction of youth in Pakistan. The purpose is to ascertain the level of influence of foreign and local media consumption on national identity formation in terms of collective self-esteem and self-image of youth with high and low level of religiosity. A survey has been conducted from students （n = 321） between the age group of 16-19 living in Lahore. The results of this study revealed that respondents with high religiosity did not prefer to consume foreign media （r = -0.435＊＊ p 〈 0.01） whereas they did not show much preference to consume Pakistani media, either （r = 0.138＊, p 〈 0.05）. The level of religiosity and positive national identity had a strong and significant positive correlation （r = 0.619＊＊, p 〈 0.01）. This study also found that those respondents who preferred to consume foreign media texts demonstrated lower self-esteem and negative self-image as Pakistanis as compared to those who did not prefer foreign media consumption （r = -0.427＊＊, p 〈 0.01）. The researcher assumed that being Pakistani, a respondent would prefer to consume more national media texts over foreign and would have more positive national identity. However, results did not support this premise （r = 0.159＊＊, p 〈 0.01） due to the fact that the respondents did not show preference to consume Pakistani media at first hand. The study also connects theoretical understanding of faith and identity in Pakistani perspective along with an additional factor of media consumption. Thus, it strengthens the argument that strong faith positively contributes towards consolidating an individual＇s identity construction process. However, the results demonstrate that media tend to play a limited role in the process of identity construction compared to family and peers among Pakistani youth.
