As the title of this paper suggests, I intend to draw attention to what, in my opinion, lies at the core of the shared notion in both Kant and Habermas. This will be the concern of the first part of my paper. My focus...As the title of this paper suggests, I intend to draw attention to what, in my opinion, lies at the core of the shared notion in both Kant and Habermas. This will be the concern of the first part of my paper. My focus will then shift, in the second part, to Habermas's views on freedom. In due time, however, as the provocative question mark in the title suggests, the notion of freedom becomes questionable. I will conclude by examining Frankfurt's notion of coercion in order to show that Habermas's notion of freedom is not only questionable but can, at times, be coercive. Throughout this paper, the reader shall be encouraged to see and possibly appreciate that there is a degree of similarity between the two thinkers. Shall the reader be hard put to gauge this similarity or shall the reader promptly appreciate it and take it into consideration? I will argue--and demonstrate--that a certain amount of similarity can readily be drawn between the two. I will leave it up to the reader to decide whether this similarity is a forced similarity or whether this is a similarity that one perceives at a first glance and thus ought to consider. This paper could better be appreciated if the reader has reasonable knowledge of the Hegelian critique of Kant's Categorical Imperative.展开更多
The author's research topics include economic and legal questions concerning prostitution and drug use. There are two extreme models in these two areas, one represented by Sweden and the other by the Netherlands. Swe...The author's research topics include economic and legal questions concerning prostitution and drug use. There are two extreme models in these two areas, one represented by Sweden and the other by the Netherlands. Sweden votes for the model of a "prostitution and drug free society", while the latter represents a looser, more liberal view. This presentation aims to answer the question whether the statistics support the presumptions of either model. To shed light on these issues, facts and figures published by the Swedish and Dutch statistics offices as well as other studies on the subject were analyzed. During the course of the past few decades. the income from the prostitution and drug markets in Sweden was virtually unchanged. This may be considered as a failure: prostitution and drug use could not be decreased further. It may also be considered as an achievement: while these two markets were growing in many countries, at least in the case of Sweden the situation did not become worse. It seems that the liberal regulation of drugs and prostitution in the Netherlands has not been a successful venture. It is no wonder that there are plans for changes and limitations to the prostitution sector with new regulations, although complete prohibition has not been raised as an issue. The consumption of drugs has been increasing. In this respect, alongside the liberal stance on the issue, increasing emphasis is placed on deterrence from light drugs.展开更多
With the increasing interest on natural products discovery, utilization of plant parts which are commonly disregarded is another breakthrough. This study sought to determine the secondary metabolites present, phenolic...With the increasing interest on natural products discovery, utilization of plant parts which are commonly disregarded is another breakthrough. This study sought to determine the secondary metabolites present, phenolic contents, radical scavenging activities and antibacterial properties of 10 selected ornamental flowers which were Adenium obesum, Allamanda cathartica, Bougainvillea glabra, Catharanthus roseus, Caesalpinia pulcherrima, Heliconia subulata, Ixora coccinea, Mussaenda philippica, Tecoma stans and Torenia fournieri, from Nueva Vizcaya, Philippines. The ethanolic crude extracts were subjected to thin layer chromatography (TLC) phytochemical screening. Total phenolics expressed as mg AAE/g sample were determined through Folin-Ciocalteu method. Radical scavenging activities were measured using DPPH assay. Antibacterial activities were assessed through TLC bioautography. To quantify bacterial susceptibility of C. pulcherrima, MIC and MBC were employed in the ethyl acetate sub-fraction. TLC showed different types of phenolics, alkaloids, essential oils and terpenes. T. fournieri showed the highest total phenolics with 155 mg AAE/g while H. subulatahad showed the lowest with 3.50 mg AAE/g. Measurement of IC59 showed that H. subulata had the highest antioxidant activity followed by T. fournieri with 303 ppm and 320 ppm, respectively. H. subulata having the least amount of total phenolics had greatest radical scavenging activity. This indicates that other than phenolics, other metabolites can pose great antioxidant activities. The antibacterial testing showed that M. philippica, 1. coccinea, 1-1. subulata, C. pulcherrima and A. cathartica were bioactive against Staphylococcus aureus and Escherichia coll. MIC and MBC of C. pulcherrima ethyl acetate sub-fraction is within the range of 2.5-10 mg/mL.展开更多
The determination of initial equilibrium shapes is a common problem in research work and engineering applications related to membrane structures. Using a general structural analysis framework of the finite particle me...The determination of initial equilibrium shapes is a common problem in research work and engineering applications related to membrane structures. Using a general structural analysis framework of the finite particle method (FPM), this paper presents the first application of the FPM and a recently-developed membrane model to the shape analysis of light weight mem- branes. The FPM is rooted in vector mechanics and physical viewpoints. It discretizes the analyzed domain into a group of parti- cles linked by elements, and the motion of the free particles is directly described by Newton's second law while the constrained ones follow the prescribed paths. An efficient physical modeling procedure of handling geometric nonlinearity has been developed to evaluate the particle interaction forces. To achieve the equilibrium shape as fast as possible, an integral-form, explicit time integration scheme has been proposed for solving the equation of motion. The equilibrium shape can be obtained naturally without nonlinear iterative correction and global stiffness matrix integration. Two classical curved surfaces of tension membranes pro- duced under the uniform-stress condition are presented to verify the accuracy and efficiency of the proposed method.展开更多
The authors study the asymptotic behavior of the incompressible Navier-Stokes fluid with degree of freedom in the porous medium in R^n with n = 2 or 3. They derive the Darcy law as ε, the character size of the hole, ...The authors study the asymptotic behavior of the incompressible Navier-Stokes fluid with degree of freedom in the porous medium in R^n with n = 2 or 3. They derive the Darcy law as ε, the character size of the hole, tends to zero. Moreover, the authors obtain the expression of the degree of freedom from the homogenized model.展开更多
Dynamic modeling and active control of a strap-on launch vehicle are studied in this paper. In the dynamic modeling, the double-compatible free-interface modal synthesis method is used to establish dynamic model of th...Dynamic modeling and active control of a strap-on launch vehicle are studied in this paper. In the dynamic modeling, the double-compatible free-interface modal synthesis method is used to establish dynamic model of the system, and its model precision is compared with those of finite element method(FEM), fixedinterface modal synthesis method and free-interface modal synthesis method. In the active control, the swing angle of rocket motor is used as design variable, and the control law design based on the model of mass center motion is adopted to validate the system. Simulation results indicate that the double-compatible model synthesis method can properly approximate the FEM which is used as the benchmark solution, and the model precision of the double-compatible modal synthesis method is obviously higher than those of the fixed-interface and freeinterface modal synthesis methods. Based on the control law design, the deflection of mass center of the launch vehicle is very small.展开更多
Implicit smoothed particle hydrodynamics method has been proposed to overcome the problem that only very small time steps can be used for high viscosity fluids(such as power law fluids)in order to obtain a stable simu...Implicit smoothed particle hydrodynamics method has been proposed to overcome the problem that only very small time steps can be used for high viscosity fluids(such as power law fluids)in order to obtain a stable simulation.However,the pressure field is difficult to simulate correctly with this method because the numerical high-frequency noise on the pressure field cannot be removed.In this study,several improvements,which are the diffusive term in the continuity equation,the artificial viscosity and a simplified physical viscosity term in the momentum equation,are introduced,and a new boundary treatment is also proposed.The linear equations derived from the momentum equation are large-scale,sparse and positive definite but unsymmetrical,therefore,Conjugate Gradient Squared(CGS)is used to solve them.For the purpose of verifying the validity of the proposed method,Poiseuille flows with Newtonian and power law fluids are solved and compared with exact solution and traditional SPH.Drops of different fluid properties impacting a rigid wall are also simulated and compared with VOF solution.All the numerical results obtained by the proposed method agree well with available data.The proposed method shows the higher efficiency than traditional SPH and the less numerical noise on the pressure field and better stability than implicit SPH.展开更多
文摘As the title of this paper suggests, I intend to draw attention to what, in my opinion, lies at the core of the shared notion in both Kant and Habermas. This will be the concern of the first part of my paper. My focus will then shift, in the second part, to Habermas's views on freedom. In due time, however, as the provocative question mark in the title suggests, the notion of freedom becomes questionable. I will conclude by examining Frankfurt's notion of coercion in order to show that Habermas's notion of freedom is not only questionable but can, at times, be coercive. Throughout this paper, the reader shall be encouraged to see and possibly appreciate that there is a degree of similarity between the two thinkers. Shall the reader be hard put to gauge this similarity or shall the reader promptly appreciate it and take it into consideration? I will argue--and demonstrate--that a certain amount of similarity can readily be drawn between the two. I will leave it up to the reader to decide whether this similarity is a forced similarity or whether this is a similarity that one perceives at a first glance and thus ought to consider. This paper could better be appreciated if the reader has reasonable knowledge of the Hegelian critique of Kant's Categorical Imperative.
文摘The author's research topics include economic and legal questions concerning prostitution and drug use. There are two extreme models in these two areas, one represented by Sweden and the other by the Netherlands. Sweden votes for the model of a "prostitution and drug free society", while the latter represents a looser, more liberal view. This presentation aims to answer the question whether the statistics support the presumptions of either model. To shed light on these issues, facts and figures published by the Swedish and Dutch statistics offices as well as other studies on the subject were analyzed. During the course of the past few decades. the income from the prostitution and drug markets in Sweden was virtually unchanged. This may be considered as a failure: prostitution and drug use could not be decreased further. It may also be considered as an achievement: while these two markets were growing in many countries, at least in the case of Sweden the situation did not become worse. It seems that the liberal regulation of drugs and prostitution in the Netherlands has not been a successful venture. It is no wonder that there are plans for changes and limitations to the prostitution sector with new regulations, although complete prohibition has not been raised as an issue. The consumption of drugs has been increasing. In this respect, alongside the liberal stance on the issue, increasing emphasis is placed on deterrence from light drugs.
文摘With the increasing interest on natural products discovery, utilization of plant parts which are commonly disregarded is another breakthrough. This study sought to determine the secondary metabolites present, phenolic contents, radical scavenging activities and antibacterial properties of 10 selected ornamental flowers which were Adenium obesum, Allamanda cathartica, Bougainvillea glabra, Catharanthus roseus, Caesalpinia pulcherrima, Heliconia subulata, Ixora coccinea, Mussaenda philippica, Tecoma stans and Torenia fournieri, from Nueva Vizcaya, Philippines. The ethanolic crude extracts were subjected to thin layer chromatography (TLC) phytochemical screening. Total phenolics expressed as mg AAE/g sample were determined through Folin-Ciocalteu method. Radical scavenging activities were measured using DPPH assay. Antibacterial activities were assessed through TLC bioautography. To quantify bacterial susceptibility of C. pulcherrima, MIC and MBC were employed in the ethyl acetate sub-fraction. TLC showed different types of phenolics, alkaloids, essential oils and terpenes. T. fournieri showed the highest total phenolics with 155 mg AAE/g while H. subulatahad showed the lowest with 3.50 mg AAE/g. Measurement of IC59 showed that H. subulata had the highest antioxidant activity followed by T. fournieri with 303 ppm and 320 ppm, respectively. H. subulata having the least amount of total phenolics had greatest radical scavenging activity. This indicates that other than phenolics, other metabolites can pose great antioxidant activities. The antibacterial testing showed that M. philippica, 1. coccinea, 1-1. subulata, C. pulcherrima and A. cathartica were bioactive against Staphylococcus aureus and Escherichia coll. MIC and MBC of C. pulcherrima ethyl acetate sub-fraction is within the range of 2.5-10 mg/mL.
基金Project supported by the National Natural Science Foundation of China (Nos. 51025858 and 51178415)
文摘The determination of initial equilibrium shapes is a common problem in research work and engineering applications related to membrane structures. Using a general structural analysis framework of the finite particle method (FPM), this paper presents the first application of the FPM and a recently-developed membrane model to the shape analysis of light weight mem- branes. The FPM is rooted in vector mechanics and physical viewpoints. It discretizes the analyzed domain into a group of parti- cles linked by elements, and the motion of the free particles is directly described by Newton's second law while the constrained ones follow the prescribed paths. An efficient physical modeling procedure of handling geometric nonlinearity has been developed to evaluate the particle interaction forces. To achieve the equilibrium shape as fast as possible, an integral-form, explicit time integration scheme has been proposed for solving the equation of motion. The equilibrium shape can be obtained naturally without nonlinear iterative correction and global stiffness matrix integration. Two classical curved surfaces of tension membranes pro- duced under the uniform-stress condition are presented to verify the accuracy and efficiency of the proposed method.
基金supported by the Research of High Schools of Guangzhou(No.1201420925)Guangdong Natural Science Foundation(No.2014A030313526)
文摘The authors study the asymptotic behavior of the incompressible Navier-Stokes fluid with degree of freedom in the porous medium in R^n with n = 2 or 3. They derive the Darcy law as ε, the character size of the hole, tends to zero. Moreover, the authors obtain the expression of the degree of freedom from the homogenized model.
基金the National Natural Science Foundation of China(Nos.11132001,11272202 and 11472171)the Key Scientific Project of Shanghai Municipal Education Commission(No.14ZZ021)the Natural Science Foundation of Shanghai(No.14ZR1421000)
文摘Dynamic modeling and active control of a strap-on launch vehicle are studied in this paper. In the dynamic modeling, the double-compatible free-interface modal synthesis method is used to establish dynamic model of the system, and its model precision is compared with those of finite element method(FEM), fixedinterface modal synthesis method and free-interface modal synthesis method. In the active control, the swing angle of rocket motor is used as design variable, and the control law design based on the model of mass center motion is adopted to validate the system. Simulation results indicate that the double-compatible model synthesis method can properly approximate the FEM which is used as the benchmark solution, and the model precision of the double-compatible modal synthesis method is obviously higher than those of the fixed-interface and freeinterface modal synthesis methods. Based on the control law design, the deflection of mass center of the launch vehicle is very small.
基金supported by the National Natural Science Foundation of China(Grant No.51276192)
文摘Implicit smoothed particle hydrodynamics method has been proposed to overcome the problem that only very small time steps can be used for high viscosity fluids(such as power law fluids)in order to obtain a stable simulation.However,the pressure field is difficult to simulate correctly with this method because the numerical high-frequency noise on the pressure field cannot be removed.In this study,several improvements,which are the diffusive term in the continuity equation,the artificial viscosity and a simplified physical viscosity term in the momentum equation,are introduced,and a new boundary treatment is also proposed.The linear equations derived from the momentum equation are large-scale,sparse and positive definite but unsymmetrical,therefore,Conjugate Gradient Squared(CGS)is used to solve them.For the purpose of verifying the validity of the proposed method,Poiseuille flows with Newtonian and power law fluids are solved and compared with exact solution and traditional SPH.Drops of different fluid properties impacting a rigid wall are also simulated and compared with VOF solution.All the numerical results obtained by the proposed method agree well with available data.The proposed method shows the higher efficiency than traditional SPH and the less numerical noise on the pressure field and better stability than implicit SPH.