his paper deals with the phase trans formation of austenite to ferrite within the critical temperature region(between Ac1 and Ac3).The results show that the volume fraction of trans formation of ferrite formed isother...his paper deals with the phase trans formation of austenite to ferrite within the critical temperature region(between Ac1 and Ac3).The results show that the volume fraction of trans formation of ferrite formed isothermally from austenite is mainly varied with the austenitizing temperature.The higher the austenitizing temperature,the more volume fraction of the ferrite formed isothermally from austenite.Besides,the phase trans formation of austenite to ferrite within the critical temperature region was checked by austenitizing isothermal time.The volume fraction of ferrite formed isothermally from austenite within the critical temperature region for different isothermal time has heen examined experimen tally.The lglg(l-fv)-1 vs lgt relation does not follow the Avrami equation strictly and consists of two straight lines.展开更多
The blending of Eastern and Western cultures brought about by colonization was an important reason for the changes in Asian architecture in the 20th century.The passive input of Western design concepts into the local ...The blending of Eastern and Western cultures brought about by colonization was an important reason for the changes in Asian architecture in the 20th century.The passive input of Western design concepts into the local tradition caused a long swing in the design direction.The process of regionalism and global modernism from opposition to gradual integration can be found in the development of a series of Asian architectures.Based on the two architectural works of Geoffrey Bawa and Ge Ruliang,this paper discusses how Asian architects make in-depth regional expressions through garden space.展开更多
The rules such as process parameters affecting joint properties and theevolution principle of weld's microstructure have been researched by adopting diffusion weldingprocess to connect SiC_w/6061Al composite. Expe...The rules such as process parameters affecting joint properties and theevolution principle of weld's microstructure have been researched by adopting diffusion weldingprocess to connect SiC_w/6061Al composite. Experimental results show that there exists a criticaltemperature region between solid and liquid phase line of SiC_w/6061Al composite, and the regionwill shrink with the increasing of welding pressure. When diffusion welding occurred under thecritical temperature region, welding joint exhibits bad property of bonding, and the matrix and thereinforcement can't bond effectively. When diffusion welding occurred in the critical temperatureregion, the strength of welding joint changes widely with the variation of welding temperature. Whenwelding temperature varies in 10 deg C, the strength of welding joint will change obviously. Onlywhen welding temperature is higher than the critical temperature region, stable joint properties canbe obtained. Simultaneously the matrix and the reinforcement has better interfacial bonded indiffusion welding interface, and no obvious interface reaction occurred, and thus diffusion weldingof SiC_w/6061 Al composite can be successfully realized.展开更多
This paper presents the results and analysis from an interview study conducted with practitioners of architectural regionalism in India.The interviews sought to gain indepth understanding of the strategies,mechanisms,...This paper presents the results and analysis from an interview study conducted with practitioners of architectural regionalism in India.The interviews sought to gain indepth understanding of the strategies,mechanisms,and tools they employ to realize contextualized architecture that responds to local needs and potential.A sample composed of nine eminent Indian architects who regularly integrate the ideas of critical regionalism in their designs is selected and subsequently interviewed with regard to the varied aspects of their architectural practice.Findings are useful for practitioners and scholars of contemporary architecture in India for understanding the means employed by leading regionalist architects,while placing their work in the context of local building traditions,urban landscape,sociocultural conditions,technology,and climate.展开更多
An equation of state （EOS） applicable for both the uniform and non-uniform fluids was established by using the density-gradient expansion, in which the influence parameter x[ρ（r）,T] was obtained by the use of dir...An equation of state （EOS） applicable for both the uniform and non-uniform fluids was established by using the density-gradient expansion, in which the influence parameter x[ρ（r）,T] was obtained by the use of direct correlation function. The density functional theory （DFT） provides a framework under which both the phase equilibria and interfacial properties can be investigated within a single set of molecular parameters. The phase equilibria inside the critical region can be improved by the renormalization group theory （RGT）. However, the correction of interfacial properties by DFT and RGT is computationally difficult. In the present work, the density gradient theory （DGT） in which κ[ρ（r）,T] is treated as a constant is used to combine with the RGT for interfacial properties inside the critical region.展开更多
Two key issues exist during virtual machine （VM） migration in cloud computing. One is when to start migration, and the other is how to determine a reliable target, both of which totally depend on whether the source ...Two key issues exist during virtual machine （VM） migration in cloud computing. One is when to start migration, and the other is how to determine a reliable target, both of which totally depend on whether the source hypervisor is trusted or not in previous studies. However, once the source hypervisor is not trusted any more, migration will be facing unprecedented challenges. To address the problems, we propose a secure architecture SMIG （secure migration）, which defines a new concept of Region Critical TCB and leverages an innovative adjacent integrity measurement （AIM） mechanism. AIM dynamically monitors the integrity of its adjacent hypervisor, and passes the results to the Re- gion Critical TCB, which then determines whether to start migration and where to migrate according to a table named integrity validation table. We have implemented a prototype of SMIG based on the Xen hypervisor. Experimental evaluation result shows that SMIG could detect a malicious hypervisor and start migration to a trusted one rapidly, only incurring a moderate overhead for computing intensive and I/O intensive tasks, and small for others.展开更多
文摘his paper deals with the phase trans formation of austenite to ferrite within the critical temperature region(between Ac1 and Ac3).The results show that the volume fraction of trans formation of ferrite formed isothermally from austenite is mainly varied with the austenitizing temperature.The higher the austenitizing temperature,the more volume fraction of the ferrite formed isothermally from austenite.Besides,the phase trans formation of austenite to ferrite within the critical temperature region was checked by austenitizing isothermal time.The volume fraction of ferrite formed isothermally from austenite within the critical temperature region for different isothermal time has heen examined experimen tally.The lglg(l-fv)-1 vs lgt relation does not follow the Avrami equation strictly and consists of two straight lines.
文摘The blending of Eastern and Western cultures brought about by colonization was an important reason for the changes in Asian architecture in the 20th century.The passive input of Western design concepts into the local tradition caused a long swing in the design direction.The process of regionalism and global modernism from opposition to gradual integration can be found in the development of a series of Asian architectures.Based on the two architectural works of Geoffrey Bawa and Ge Ruliang,this paper discusses how Asian architects make in-depth regional expressions through garden space.
文摘The rules such as process parameters affecting joint properties and theevolution principle of weld's microstructure have been researched by adopting diffusion weldingprocess to connect SiC_w/6061Al composite. Experimental results show that there exists a criticaltemperature region between solid and liquid phase line of SiC_w/6061Al composite, and the regionwill shrink with the increasing of welding pressure. When diffusion welding occurred under thecritical temperature region, welding joint exhibits bad property of bonding, and the matrix and thereinforcement can't bond effectively. When diffusion welding occurred in the critical temperatureregion, the strength of welding joint changes widely with the variation of welding temperature. Whenwelding temperature varies in 10 deg C, the strength of welding joint will change obviously. Onlywhen welding temperature is higher than the critical temperature region, stable joint properties canbe obtained. Simultaneously the matrix and the reinforcement has better interfacial bonded indiffusion welding interface, and no obvious interface reaction occurred, and thus diffusion weldingof SiC_w/6061 Al composite can be successfully realized.
基金The authors would like to thank the Government of Indian Ministry of Human Resource Development for funding this manuscript through the IIT-Roorkee Doctoral Scholarship to the main author,grant number 14902005.We sincerely thank the architects who patiently and articulately answered our questions on regionalism and their buildings:Ashok B Lall,Meghal Arya,MN Ashish Ganju,Namita Singh,Pankaj Vir Gupta,Rahoul Singh,Sanjay Mohe,Sourabh Gupta,and Vinod Gupta.Lastly,the authors would like to thank the two anonymous reviewers of the FOAR journal for their time and effort in providing constructive comments that helped improve the quality of this paper.
文摘This paper presents the results and analysis from an interview study conducted with practitioners of architectural regionalism in India.The interviews sought to gain indepth understanding of the strategies,mechanisms,and tools they employ to realize contextualized architecture that responds to local needs and potential.A sample composed of nine eminent Indian architects who regularly integrate the ideas of critical regionalism in their designs is selected and subsequently interviewed with regard to the varied aspects of their architectural practice.Findings are useful for practitioners and scholars of contemporary architecture in India for understanding the means employed by leading regionalist architects,while placing their work in the context of local building traditions,urban landscape,sociocultural conditions,technology,and climate.
基金Project Supported by the National Naturai Science Foundation of＇C-hina （No. 20576030） and the Key Program Foundation from the North China Electric Power University.
文摘An equation of state （EOS） applicable for both the uniform and non-uniform fluids was established by using the density-gradient expansion, in which the influence parameter x[ρ（r）,T] was obtained by the use of direct correlation function. The density functional theory （DFT） provides a framework under which both the phase equilibria and interfacial properties can be investigated within a single set of molecular parameters. The phase equilibria inside the critical region can be improved by the renormalization group theory （RGT）. However, the correction of interfacial properties by DFT and RGT is computationally difficult. In the present work, the density gradient theory （DGT） in which κ[ρ（r）,T] is treated as a constant is used to combine with the RGT for interfacial properties inside the critical region.
基金Acknowledgements The subject was sponsored by the National Science and Technology Major Project （2012ZX01039-004） and the National Natural Science Foundation of China （Grant No. 61305054）
文摘Two key issues exist during virtual machine （VM） migration in cloud computing. One is when to start migration, and the other is how to determine a reliable target, both of which totally depend on whether the source hypervisor is trusted or not in previous studies. However, once the source hypervisor is not trusted any more, migration will be facing unprecedented challenges. To address the problems, we propose a secure architecture SMIG （secure migration）, which defines a new concept of Region Critical TCB and leverages an innovative adjacent integrity measurement （AIM） mechanism. AIM dynamically monitors the integrity of its adjacent hypervisor, and passes the results to the Re- gion Critical TCB, which then determines whether to start migration and where to migrate according to a table named integrity validation table. We have implemented a prototype of SMIG based on the Xen hypervisor. Experimental evaluation result shows that SMIG could detect a malicious hypervisor and start migration to a trusted one rapidly, only incurring a moderate overhead for computing intensive and I/O intensive tasks, and small for others.
