In China, community tourism is still a relatively new phenomenon, but the villagers of a small Qiang village in the Qiang Autonomous County of Beichuan in Southwestern Sichuan have initiated tourism in a way which con...In China, community tourism is still a relatively new phenomenon, but the villagers of a small Qiang village in the Qiang Autonomous County of Beichuan in Southwestern Sichuan have initiated tourism in a way which conforms to the basic theory of community tourism development. This demonstrates that community tourism possesses a strength and vitality that can promote the development of tourism in the rural and mountainous areas. In the district of Zhenghe Village, the tourism industry, based on the community tourism model, is the mainstay of its economy. The practice of community tourism in the village not only promotes the economic development of the village community, but also leads to the protection of the mountainous natural environment and of the culture of the Qiang people. This paper investigates the development process of community tourism in Zhenghe and shows how the local residents participate in this process. It also looks at how profits have been distributed within the community. It demonstrates that community tourism is a correct choice by the Zhenghe people as they have dearly been moving from poverty to prosperity, while the local ecology and environment have been simultaneously protected. The authors hope that other minority villages with similar local conditions and natural resources will be able to use this example to develop their own community tourism.展开更多
The effects of the nonadiabatic phonon behaviours on the ground state of the system and the quantum modifications of the polaron characteristics and the modification form of the uncertainty relation between the phonon...The effects of the nonadiabatic phonon behaviours on the ground state of the system and the quantum modifications of the polaron characteristics and the modification form of the uncertainty relation between the phonon coordinate and momentum due to fluctuations of the electron density in the coupled electron-phonon systems have been studied by using a new variational ansatz for coherent phonons with correlated displacement and squeezing including internations with electrons.The correlated effect results in the following effect:(1)the energy of the ground state of the system is found to be lower than that for the phonons with uncorrelated displacement and squeezing;(2)the binding energy of the polaron was found to be increased;(3)the nonadiabatic coupling with electrons enhances the quantum uncertainty for the phonon coordinate and momentum when compared with the adiabatic and uncorrelated case.展开更多
This paper discusses the dynamic behavior of the Kelvin-Stuart cat's eye flow under periodic perturbations. By means of the Melnikov method the conditions to have bifurcations to subharmonics of even order for the...This paper discusses the dynamic behavior of the Kelvin-Stuart cat's eye flow under periodic perturbations. By means of the Melnikov method the conditions to have bifurcations to subharmonics of even order for the oscillating orbits and to have bifurcations to subharmonics of any order for the rotating orbits are given, and further, the coexistence phenomena of the chaotic motions and periodic solutions are presented.展开更多
This paper discusses the chaos and bifurcation for equation x+cosxx+asinx =ebsint. By use of the Melnikov method the conditions to have the chaotic behavior and to have subharmonic oscillations are given.
How to transport the energy released in ATP hydrolysis in the biology or protein is a very interesting and important problem. In the 1970s Davydov proposed a soliton mode for it, considering that the Davydov soliton a...How to transport the energy released in ATP hydrolysis in the biology or protein is a very interesting and important problem. In the 1970s Davydov proposed a soliton mode for it, considering that the Davydov soliton arising in protein is due to the vibrational energy of amide-I vibration or the quanta of the intramolecular excitation resulting from the local fluctuation, and deformation of structure caused by the energy released in ATP hydrolysis becomes self-trapped through a coupling between展开更多
It is known that our theory is preferable and more justifiable to the protein compared with the Davydov theory. For example, the soliton energy （about 13—36cm）, the soliton lifetime at 310K (about 10<sup>-9&l...It is known that our theory is preferable and more justifiable to the protein compared with the Davydov theory. For example, the soliton energy （about 13—36cm）, the soliton lifetime at 310K (about 10<sup>-9</sup>—10<sup>-8</sup>s) and the specific heat resulting from the soliton （C<sub>v</sub>=A+BT and C<sub>1</sub>=10<sup>4</sup> erg/gK<sup>2</sup>） in our theory are basically consistent with the infrared and Raman spectral experimental datum (15cm<sup>-1</sup>), Auston’s picosecond freeelectron laser experimental value (about 10<sup>-10</sup>s) and Mrevishvil and Goldanskii’s measurement results （C<sub>v</sub>=a+rT and C<sub>1</sub>=10<sup>4</sup> erg/gK<sup>2</sup>）, respectively. These show that our theory for bio-energy transport by the soliton is correct and credible. The very reason is展开更多
Ⅰ. EQUIVALENT RADIUS OF POLYWIRE CONDUCTOR The cross-section of the commonly conductive polywire transmission line with rectangular outer conductor and
文摘In China, community tourism is still a relatively new phenomenon, but the villagers of a small Qiang village in the Qiang Autonomous County of Beichuan in Southwestern Sichuan have initiated tourism in a way which conforms to the basic theory of community tourism development. This demonstrates that community tourism possesses a strength and vitality that can promote the development of tourism in the rural and mountainous areas. In the district of Zhenghe Village, the tourism industry, based on the community tourism model, is the mainstay of its economy. The practice of community tourism in the village not only promotes the economic development of the village community, but also leads to the protection of the mountainous natural environment and of the culture of the Qiang people. This paper investigates the development process of community tourism in Zhenghe and shows how the local residents participate in this process. It also looks at how profits have been distributed within the community. It demonstrates that community tourism is a correct choice by the Zhenghe people as they have dearly been moving from poverty to prosperity, while the local ecology and environment have been simultaneously protected. The authors hope that other minority villages with similar local conditions and natural resources will be able to use this example to develop their own community tourism.
基金Supported by the State Science and Technology Commission of China under Grant No.SSTC-96-10.
文摘The effects of the nonadiabatic phonon behaviours on the ground state of the system and the quantum modifications of the polaron characteristics and the modification form of the uncertainty relation between the phonon coordinate and momentum due to fluctuations of the electron density in the coupled electron-phonon systems have been studied by using a new variational ansatz for coherent phonons with correlated displacement and squeezing including internations with electrons.The correlated effect results in the following effect:(1)the energy of the ground state of the system is found to be lower than that for the phonons with uncorrelated displacement and squeezing;(2)the binding energy of the polaron was found to be increased;(3)the nonadiabatic coupling with electrons enhances the quantum uncertainty for the phonon coordinate and momentum when compared with the adiabatic and uncorrelated case.
文摘This paper discusses the dynamic behavior of the Kelvin-Stuart cat's eye flow under periodic perturbations. By means of the Melnikov method the conditions to have bifurcations to subharmonics of even order for the oscillating orbits and to have bifurcations to subharmonics of any order for the rotating orbits are given, and further, the coexistence phenomena of the chaotic motions and periodic solutions are presented.
基金Project Supported by the National Natural Science Foundation of China
文摘This paper discusses the chaos and bifurcation for equation x+cosxx+asinx =ebsint. By use of the Melnikov method the conditions to have the chaotic behavior and to have subharmonic oscillations are given.
文摘How to transport the energy released in ATP hydrolysis in the biology or protein is a very interesting and important problem. In the 1970s Davydov proposed a soliton mode for it, considering that the Davydov soliton arising in protein is due to the vibrational energy of amide-I vibration or the quanta of the intramolecular excitation resulting from the local fluctuation, and deformation of structure caused by the energy released in ATP hydrolysis becomes self-trapped through a coupling between
文摘It is known that our theory is preferable and more justifiable to the protein compared with the Davydov theory. For example, the soliton energy （about 13—36cm）, the soliton lifetime at 310K (about 10<sup>-9</sup>—10<sup>-8</sup>s) and the specific heat resulting from the soliton （C<sub>v</sub>=A+BT and C<sub>1</sub>=10<sup>4</sup> erg/gK<sup>2</sup>） in our theory are basically consistent with the infrared and Raman spectral experimental datum (15cm<sup>-1</sup>), Auston’s picosecond freeelectron laser experimental value (about 10<sup>-10</sup>s) and Mrevishvil and Goldanskii’s measurement results （C<sub>v</sub>=a+rT and C<sub>1</sub>=10<sup>4</sup> erg/gK<sup>2</sup>）, respectively. These show that our theory for bio-energy transport by the soliton is correct and credible. The very reason is
文摘Ⅰ. EQUIVALENT RADIUS OF POLYWIRE CONDUCTOR The cross-section of the commonly conductive polywire transmission line with rectangular outer conductor and
