Instruction

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    Submission Guidelines
     
    Submission declaration
    Submission of an article implies that the work described has not been published previously, that it is not under consideration for publication elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, it will not be published elsewhere including electronically in the same form, in English or in any other language, without the written consent of the copyright-holder.
     
    Format
     
    General rule: Submitted manuscripts should be double-spaced texts in 10.5 point font, and formatted for paper of standard size with margins of at least 20mm on all sides. Pages should be numbered, and an abstract (of no more than 200 words), as well as keywords and complete author affiliations, should be included in the paper in the title page.
     
    Mathematics: Equations must be identified by consecutive Arabic numbers in parentheses on the right. Expressions should be aligned and compound subscripts and superscripts clearly marked if there is any potential for confusion.
     
    Figures: Figures must be of professional quality and ready for reproduction. They should be numbered consecutively. Black-and-white versions of figures are required for printing purposes, but color figures can also be supplied for online dissemination.
     
    Tables: Tables should be numbered consecutively throughout the article. Each table must include a descriptive title and headings to columns. Gather general footnotes to tables as “Note:” or “Notes:”, and use a, b, c, etc., for specific footnotes. Asterisks * and/or ** indicate significance at the 5 percent and 1 percent levels, respectively, if used.
     
    Further considerations
    ? Manuscript has been spell-checked and grammar-checked
    ? References are in the correct format for this journal
    ? All references mentioned in the reference list are cited in the text, and vice versa
    ? Permission has been obtained for use of copyrighted material from other sources
     
    It is a condition of publication in Population Researchthat copyright of any published articles be transferred to the Population Research. Therefore, submission of a paper will be taken to imply that the author agrees that copyright of the material will be transferred to the Population Research if and when the article is accepted for publication, and that the contents of the paper represent original and unpublished work that has not been submitted for publication elsewhere. Authors may post accepted work on their personal or institutional websites. Population Research has licensed China Academic Journals (CD Edition) Electronic Publishing House to reproduce, compile, publish and disseminate the complete text of Population Research in digital formats on the website and in the various databases of China National Knowledge Internet (CNKI). Any royalties arising from the above usage of copyrights are included in the lump sum payments by Population Research to the author(s) for publishing their works and will not be paid separately. By submitting to Population Research, the author(s) acknowledges the above announcement.
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