We employ molecular dynamic simulation to investigate metabasin dynamics for supercooled polymer melt. We find that, in a small system, the α-relaxation process is composed of a few crossing events that the monomers ...We employ molecular dynamic simulation to investigate metabasin dynamics for supercooled polymer melt. We find that, in a small system, the α-relaxation process is composed of a few crossing events that the monomers hops from one metabasin to another. Each crossing event is very rapid and involves a democratic movement of many particles,whereas such collective motion is not string-like. Evaluation on the contributions of metabasin exploration and democratic movement shows that the structural relaxation is mostly governed by the latter. Our calculated results show that the metabasin–metabasin transitions are not the main reason of spatially dynamical heterogeneity. It is different from the binary Lennard–Jones mixture model in which the metabasin–metabasin transitions are relevant for the spatially dynamical heterogeneity.展开更多
In January 2011,a revolutionary movement fighting for political democracy broke out in Egypt,influenced by the Jasmine Revolution that had taken place in Tunisia.With the development of the January Revolution,the demo...In January 2011,a revolutionary movement fighting for political democracy broke out in Egypt,influenced by the Jasmine Revolution that had taken place in Tunisia.With the development of the January Revolution,the democratic movement gave way to an unexpected political Islamic movement,represented by the Muslim Brotherhood which has received broad civil support.In the most recent national presidential election on June 23rd-24th,Mursi,the chairman of The Freedom and Justice Party and Shafiq,the former Prime Minister,became the candidates for the second round of the presidential election.The failure of Ahbad Sabashi,head of Nasser’s side in this competition,shows that the democratization of Egypt still has a long way to go.展开更多
The continuously evolving political turbulences and upheavals of the Arab countries can be regarded as an endogenous Arab democratic movement.In this evolving process,“the Islamic Elements”once again become an impor...The continuously evolving political turbulences and upheavals of the Arab countries can be regarded as an endogenous Arab democratic movement.In this evolving process,“the Islamic Elements”once again become an important source of spiritual and ideological resources for its social transformation.Now as the situation becomes more and more obvious that various factions of Islamic forces are accelerating their proceedings of“realignment”and“differentiation”,an extremely intrigue complex of interconnections is emerging between different Islamic factions and between religious politics and geopolitics.This situational evolution is not only influencing the Middle East region,but also affecting the peace and development of the whole world.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.11804085)the Doctoral Foundation of Heze University,China(Grant No.XY18BS13)
文摘We employ molecular dynamic simulation to investigate metabasin dynamics for supercooled polymer melt. We find that, in a small system, the α-relaxation process is composed of a few crossing events that the monomers hops from one metabasin to another. Each crossing event is very rapid and involves a democratic movement of many particles,whereas such collective motion is not string-like. Evaluation on the contributions of metabasin exploration and democratic movement shows that the structural relaxation is mostly governed by the latter. Our calculated results show that the metabasin–metabasin transitions are not the main reason of spatially dynamical heterogeneity. It is different from the binary Lennard–Jones mixture model in which the metabasin–metabasin transitions are relevant for the spatially dynamical heterogeneity.
基金This research is the product of Chinese Educational Ministry program“China’s National Interest in the Middle East(West Asia and North Africa)”(2009JJD810010)Chinese Educational Ministry program“Islamic Middle East Region and the Transition of International System”(08JZD0039)it is also supported by the Shanghai International Studies University“211”program(Stage III)and Key Discipline of Shanghai(B702).
文摘In January 2011,a revolutionary movement fighting for political democracy broke out in Egypt,influenced by the Jasmine Revolution that had taken place in Tunisia.With the development of the January Revolution,the democratic movement gave way to an unexpected political Islamic movement,represented by the Muslim Brotherhood which has received broad civil support.In the most recent national presidential election on June 23rd-24th,Mursi,the chairman of The Freedom and Justice Party and Shafiq,the former Prime Minister,became the candidates for the second round of the presidential election.The failure of Ahbad Sabashi,head of Nasser’s side in this competition,shows that the democratization of Egypt still has a long way to go.
基金This article is an early stage achievement of the research work for“the Studies on New China’s Humane Diplomacy towards Middle East States”,a Key Research Program(10JJDGJW021)of the Key Research Bases of Chinese Education Ministryfor“the Studies of New China’s Humane Diplomacy&Strategies towards the Middle East&Islamic Countries”,a research program(11BGJ033)financed by China’s National Foundation for Social Sciences+1 种基金for Chinese Educational Ministry program“Islamic Middle East Region and the Transition of International System”(08JZD0039)it is also supported by the Shanghai International Studies University“211”program(Stage III).
文摘The continuously evolving political turbulences and upheavals of the Arab countries can be regarded as an endogenous Arab democratic movement.In this evolving process,“the Islamic Elements”once again become an important source of spiritual and ideological resources for its social transformation.Now as the situation becomes more and more obvious that various factions of Islamic forces are accelerating their proceedings of“realignment”and“differentiation”,an extremely intrigue complex of interconnections is emerging between different Islamic factions and between religious politics and geopolitics.This situational evolution is not only influencing the Middle East region,but also affecting the peace and development of the whole world.
