By the contingent value method, we studied the non-use value of wetland ecosystem service of Hongxing National Nature Reserve （HNNR） in Heilongjiang Pro- vince, northeast China. The proportion of respondents willing...By the contingent value method, we studied the non-use value of wetland ecosystem service of Hongxing National Nature Reserve （HNNR） in Heilongjiang Pro- vince, northeast China. The proportion of respondents willing to pay （WTP） for protection of HNNR was 63 %. The WTP ratio was affected by geographical area, contact nature, personal preferences, and familiar degree of the respondents. The WTP value was affected by age, education level and career of the respondents. The mainly reasons for people rejecting to pay for protecting HNNR were ＂I am not familiar to HNNR＂ and ＂I had no capacity for additional spending because of low income＂. Weighted average individual WTP value was CNY 59.26 Yuan ind.^-1 year^-1 for all the respondents with WTP. The total non-use ecosystem service value of HNNR was CNY 1430 million Yuan in 2013. The heritage value was highest followed by existence value and option value. From the high ecosystem service value in HNNR, it is very important to construct nature reserve for protecting natural ecosystems and human sustainable use of natural resources.展开更多
In this paper,a compact difference scheme is established for the heat equations with multi-point boundary value conditions.The truncation error of the difference scheme is O(τ2+h^4),where t and h are the temporal ste...In this paper,a compact difference scheme is established for the heat equations with multi-point boundary value conditions.The truncation error of the difference scheme is O(τ2+h^4),where t and h are the temporal step size and the spatial step size.A prior estimate of the difference solution in a weighted norm is obtained.The unique solvability,stability and convergence of the difference scheme are proved by the energy method.The theoretical statements for the solution of the difference scheme are supported by numerical examples.展开更多
Generalized Jacobi polynomials with indexes α,β∈ R are introduced and some basic properties are established. As examples of applications,the second- and fourth-order elliptic boundary value problems with Dirichlet ...Generalized Jacobi polynomials with indexes α,β∈ R are introduced and some basic properties are established. As examples of applications,the second- and fourth-order elliptic boundary value problems with Dirichlet or Robin boundary conditions are considered,and the generalized Jacobi spectral schemes are proposed. For the diagonalization of discrete systems,the Jacobi-Sobolev orthogonal basis functions are constructed,which allow the exact solutions and the approximate solutions to be represented in the forms of infinite and truncated Jacobi series. Error estimates are obtained and numerical results are provided to illustrate the effectiveness and the spectral accuracy.展开更多
This study deals with the values and orientation of Georgian social and political publications in the times of the Georgian Democratic Republic （1918-1921）. It also shows how the press of that time reflected the ide...This study deals with the values and orientation of Georgian social and political publications in the times of the Georgian Democratic Republic （1918-1921）. It also shows how the press of that time reflected the idea of ＂Georgian Europeanism＂ based on liberal values that took shape as an anti-colonial concept in the journalism of the late 19th century. The opposed dominant ideological projects of that era comprised on the one hand, National Democratic and Socialist Federalist parties that aspired to preserve national identity and carry out changes and on the other hand, ruling Social Democrats （who initially neglected national identity, but later shared the idea）. This opposition was clearly reflected in the media discourse of that time, which implied the following rights based on the principles of classical liberalism： freedom of conscience and expression, rule of law, personal independence, and individual rights. Other elements were added to this list later. The issue of religious tolerance also became topical. Journalist texts of the period reflected and rationalised the values recognised in today＇s democratic and liberal communities. The research was carried out in the archives of the periodicals of the aforementioned period （newspapers Sakhalkho Sakme, Sakartvelo, Ertoba, and Sakartvelos Respublika） by means of systematising and classifying retrieved materials and making a substantive and varietal analysis of individual media texts.展开更多
基金supported by the Fundamental Research Funds for the Central Universities(DL13BAX10)the Natural Science Foundation of Heilongjiang Province of China(QC2013C037)the assisted project by Heilongjiang Postdoctoral Funds for Scientific Research Initiation(LBH-Q13006)
文摘By the contingent value method, we studied the non-use value of wetland ecosystem service of Hongxing National Nature Reserve （HNNR） in Heilongjiang Pro- vince, northeast China. The proportion of respondents willing to pay （WTP） for protection of HNNR was 63 %. The WTP ratio was affected by geographical area, contact nature, personal preferences, and familiar degree of the respondents. The WTP value was affected by age, education level and career of the respondents. The mainly reasons for people rejecting to pay for protecting HNNR were ＂I am not familiar to HNNR＂ and ＂I had no capacity for additional spending because of low income＂. Weighted average individual WTP value was CNY 59.26 Yuan ind.^-1 year^-1 for all the respondents with WTP. The total non-use ecosystem service value of HNNR was CNY 1430 million Yuan in 2013. The heritage value was highest followed by existence value and option value. From the high ecosystem service value in HNNR, it is very important to construct nature reserve for protecting natural ecosystems and human sustainable use of natural resources.
基金The research is supported by the National Natural Science Foundation of China(No.11671081)the Fundamental Research Funds for the Central Universities(No.242017K41044).
文摘In this paper,a compact difference scheme is established for the heat equations with multi-point boundary value conditions.The truncation error of the difference scheme is O(τ2+h^4),where t and h are the temporal step size and the spatial step size.A prior estimate of the difference solution in a weighted norm is obtained.The unique solvability,stability and convergence of the difference scheme are proved by the energy method.The theoretical statements for the solution of the difference scheme are supported by numerical examples.
基金the National Natural Science Foundation of China (Nos.11571238,11601332,91130014,11471312 and 91430216).
文摘Generalized Jacobi polynomials with indexes α,β∈ R are introduced and some basic properties are established. As examples of applications,the second- and fourth-order elliptic boundary value problems with Dirichlet or Robin boundary conditions are considered,and the generalized Jacobi spectral schemes are proposed. For the diagonalization of discrete systems,the Jacobi-Sobolev orthogonal basis functions are constructed,which allow the exact solutions and the approximate solutions to be represented in the forms of infinite and truncated Jacobi series. Error estimates are obtained and numerical results are provided to illustrate the effectiveness and the spectral accuracy.
文摘This study deals with the values and orientation of Georgian social and political publications in the times of the Georgian Democratic Republic （1918-1921）. It also shows how the press of that time reflected the idea of ＂Georgian Europeanism＂ based on liberal values that took shape as an anti-colonial concept in the journalism of the late 19th century. The opposed dominant ideological projects of that era comprised on the one hand, National Democratic and Socialist Federalist parties that aspired to preserve national identity and carry out changes and on the other hand, ruling Social Democrats （who initially neglected national identity, but later shared the idea）. This opposition was clearly reflected in the media discourse of that time, which implied the following rights based on the principles of classical liberalism： freedom of conscience and expression, rule of law, personal independence, and individual rights. Other elements were added to this list later. The issue of religious tolerance also became topical. Journalist texts of the period reflected and rationalised the values recognised in today＇s democratic and liberal communities. The research was carried out in the archives of the periodicals of the aforementioned period （newspapers Sakhalkho Sakme, Sakartvelo, Ertoba, and Sakartvelos Respublika） by means of systematising and classifying retrieved materials and making a substantive and varietal analysis of individual media texts.
