-Wave refraction-diffraction due to a large ocean structure and topography in the presence of a 'current are studied numerically. The mathematical model is the mild-slope equation developed by Kirby (1984). This e...-Wave refraction-diffraction due to a large ocean structure and topography in the presence of a 'current are studied numerically. The mathematical model is the mild-slope equation developed by Kirby (1984). This equation is solved using a finite and boundary element method. The physical domain is devid-ed into two regions: a slowly varying topography region and a constant water depth region. For waves propagating in the constant water depth region, without current interfering, the mild- slope equation is then reduced to the Helmholtz equation which is solved by boundary element method. In varying topography region, this equation will be solved by finite element method. Conservation of mass and energy flux of the fluid between these two regions is required for composition of these two numerical methods. The numerical scheme proposed here is capable of dealing with water wave problems of different water depths with the main characters of these two methods.展开更多
This paper revisits the Coca-Cola/Huiyuan case, using quantitative methods. We first estimate the demand system of carbonated soft drinks and juices, using the data of the 4-digit code Chinese soft drink industry. We ...This paper revisits the Coca-Cola/Huiyuan case, using quantitative methods. We first estimate the demand system of carbonated soft drinks and juices, using the data of the 4-digit code Chinese soft drink industry. We then define the relevant market by implementing the SSNIP test （a.k.a. the hypothetical monopolist test）. Finally, we evaluate the unilateral effect on the juices market with merger simulation. Our results show that carbonated soft drinks and juicess are in two separate relevant markets. More importantly, there may, be a significant unilateral effect on the juices market based on scenario analysis. 7his result confirms the MOFCOM decision itself, but highlights that competition damage comes more from unilateral efect than from the dubious portfolio effect.展开更多
文摘-Wave refraction-diffraction due to a large ocean structure and topography in the presence of a 'current are studied numerically. The mathematical model is the mild-slope equation developed by Kirby (1984). This equation is solved using a finite and boundary element method. The physical domain is devid-ed into two regions: a slowly varying topography region and a constant water depth region. For waves propagating in the constant water depth region, without current interfering, the mild- slope equation is then reduced to the Helmholtz equation which is solved by boundary element method. In varying topography region, this equation will be solved by finite element method. Conservation of mass and energy flux of the fluid between these two regions is required for composition of these two numerical methods. The numerical scheme proposed here is capable of dealing with water wave problems of different water depths with the main characters of these two methods.
文摘This paper revisits the Coca-Cola/Huiyuan case, using quantitative methods. We first estimate the demand system of carbonated soft drinks and juices, using the data of the 4-digit code Chinese soft drink industry. We then define the relevant market by implementing the SSNIP test （a.k.a. the hypothetical monopolist test）. Finally, we evaluate the unilateral effect on the juices market with merger simulation. Our results show that carbonated soft drinks and juicess are in two separate relevant markets. More importantly, there may, be a significant unilateral effect on the juices market based on scenario analysis. 7his result confirms the MOFCOM decision itself, but highlights that competition damage comes more from unilateral efect than from the dubious portfolio effect.
