According to still existing problem of Quantum-behaved Particle Swarm Optimization(QPSO),a new QPSO with two Particle Swarms based on public history researching side-by-side(TPHQPSO)is presented.

Tuntian(having garrison troops or newly settled peasants open up wasteland and grow food grain)in Xinjiang during the Qing Dynasty Examined from a Perspective of Environmental History;

Environmental History:A New Field for the Studies of American West;

By analysis of historical environment, site layout, design of facades, materials and colors of the Max Planck Haus, the article tries to reveal how the architects succeeded in keeping the balance between modernity and history.

The historical environment , discussed by Karl Marx , played an outstanding role in the 20 th century when the unbalanced world history was developing jointly.

The relationship between the Great Wall and its natural environment is researched in the article intending to provide useful reference for environment protecting and historic environment reappearing in different parts of the Great Wall.

It discusses the relation between the architectural style and the natural environment,historic environment and social environment,points out the architectural productions is the unification among the three elements,the three elements are equal and are the basic elements to the success of architectural productions,which will supply ideas to create successful architectural productions.

From the historic environment and cultural economy perspectives, this paper discusses the basis and countermeasures of the historic cities development in China.