Joiner, T. E., Pettit, J. W., Walker, R. L., Voelz, Z. R., Cruz, J., Rudd, M. D., & Lester, D. (2002). Perceived burdensomeness and suicidality: Two studies on the suicide notes of those attempting and those completing suicide. Journal of Social and Clinical Psychology, 21, 531-545.

国外自杀遗书研究现状述评
Latest Introduction of Suicide Notes Research in the West

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心理学进展Vol.5 No.5, 全文下载: PDF HTML XML DOI:10.12677/AP.2015.55041, May 27 2015

r-一致D-超图的最大边数
The Maximum Number of Hyperedges of An r-Uniform D-Hypergraph

朱义坪, 熊亚萍   

应用数学进展Vol.9 No.1, 全文下载: PDF HTML XML DOI:10.12677/AAM.2020.91013, January 15 2020

研发投入与企业绩效的关系研究——以科创板上市公司为例
Research on the Relationship between R & D Investment and Enterprise Performance—Taking the Listed Companies on Kechuang Board as an Example

李 芸   

社会科学前沿Vol.10 No.9, 全文下载: PDF HTML XML DOI:10.12677/ASS.2021.109369, September 29 2021

政府R & D资助对企业自主科技创新的影响——基于门槛回归分析
Influence of Government R & D Funding on Independent Scientific and Technological Innovation of Enterprises—Based on Threshold Regression Analysis

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社会科学前沿Vol.8 No.7, 全文下载: PDF HTML XML DOI:10.12677/ASS.2019.87155, July 9 2019