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生产要素、FDI、环境消耗与中国经济增长源泉——基于biennial Malmquist生产率指数的分解

系统工程理论与实践 2016年第3期36卷 581-592页

作者：唐李伟胡宗义湖南大学金融与统计学院长沙410079 湖南师范大学数学与计算机科学学院高性能计算与随机信息处理省部共建教育部重点实验室长沙410006

论文将资本存量区分为国内资本存量和国外资本存量,基于biennial Malmquist生产率指数对考虑环境消耗的中国1998—2011年间的经济增长源泉进行分解.测算结果显示,整体来看,全要素生产率、劳动投入、国内资本、国外资本以及环境消耗对经... 详细信息

论文将资本存量区分为国内资本存量和国外资本存量,基于biennial Malmquist生产率指数对考虑环境消耗的中国1998—2011年间的经济增长源泉进行分解.测算结果显示,整体来看,全要素生产率、劳动投入、国内资本、国外资本以及环境消耗对经济增长的贡献率分别为4.33%、3.67%、48.1%、18%和25.9%.分地区统计发现,东部地区全要素生产率对经济增长的贡献率显著大于中西部地区,中部地区的经济增长对资本的依赖性最大,西部地区经济增长对国外资本的依赖性最大.当前中国经济增长对资本依赖度较大且存在地区差异,全要素生产率对经济增长的贡献率有限,经济在快速增长的同时,对环境产生了巨大消耗,这种经济增长模式是不可持续的,转变经济增长方式是必然选择.

关键词：生产要素国外资本环境消耗 biennial Malmquist生产率指数经济增长源泉

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Allelopathic potential of <i>Artemisia biennis</i>(biennial wormwood)

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Agricultural Sciences 2012年第4期3卷 582-587页

作者： George O. Kegode Mark G. Ciernia David B. Vlieger Department of Agricultural Sciences and Department of Mathematics Computer Science and Information Systems Northwest Missouri State University Maryville MO 64468 U.S.A. Department of Plant Sciences North Dakota State University Fargo ND 58105 U.S.A

In this study, Artemisia biennis was seeded in a greenhouse and raised to an average plant height of 100 cm. Aboveground plant portions were harvested and partitioned into leaves and stems, and dried;while roots were either removed from some soil (soil – roots) or left in soil (soil + roots). Greenhouse studies were conducted to evaluate the allelopathic potential of A. biennis leaves, roots, and stems;and soil – roots, and soil + roots on Solanum melanocerasum plant height and fresh weight plant–1. When 5 g of root and stem biomass were added to soil, S. melanocerasum plant height and fresh weight plant–1 was reduced by 75 and 88%, respectively. In contrast, 5 g of leaf biomass caused an increase in S. melanocerasum plant height and fresh weight plant–1 by 35% and 43%, respectively;whereas, 20 g of leaf biomass depressed both variables by 50% and 65%, also respectively. Plant height was more suppressed when S. melanocerasum grew in soil – roots as opposed to soil + roots, whereas fresh weight plant–1 was similar between soil treatments. S. melanocerasum plant height was reduced by 70 and 55% when grown in soil – roots and soil + roots, respectively. In contrast, S. melanocerasum fresh weight plant–1 was reduced by 76% in both soil treatments. The reduction in S. melanocerasum plant attributes in this study is indicative of the allelopathic potential of A. biennis. Furthermore, A. biennis allelopathy is differenttially expressed among plant parts, primarily in roots. This may explain how A. biennis is capable of dominating a habitat once it becomes established. The presence of extractable compounds with herbicidal activity could increase the potential usefulness of A. biennis.

关键词： Allelopathic Potential Artemisia Biennis biennial Wormwood Garden Huckleberry Solanum Melanocerasum

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Do Circulating RSV-Genotypes Affect Established biennial Epidemic Periodicity in Zagreb Region?

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Open Journal of Respiratory Diseases 2012年第4期2卷 91-94页

作者： Gordana Mlinaric-Galinovic Dubravko Forcic Jelena Ivancic-Jelecki Gordana Vojnovic Jadranka Bozikov Robert C. Welliver Department of Medical Statistics Epidemiology and Medical Informatics A. Stampar School of Public Health Medical School University of Zagreb Zagreb Croatia Department of Virology Croatian National Institute of Public Health and University Medical School of Zagreb Zagreb Croatia Department of Virology Croatian National Institute of Public Health Zagreb Croatia Division of Infectious Diseases Department of Pediatrics Children’s Hospital Oklahoma University Health Sciences Center Oklahoma City USA Institute of Immunology Zagreb Zagreb Croatia

Objective: The biennial epidemic pattern of respiratory syncytial virus (RSV) circulation in Croatia has been preserved and could not be related to climatic factors and the predominant RSV subtypes. The possibility that the circulation of different RSV genotypes affect the outbreak cycle in children in Croatia (Zagreb region) over a period of 3 consecutive years was explored in the paper. Methods: The study group consisted of inpatients, aged 0-10 years, who were hospi- talized with acute respiratory tract infections caused by RSV, in Zagreb, over the period from 1 January 2006 to 31 De- cember 2008. The virus was identified in the nasopharyngeal secretion using direct immunofluorescence method. The virus subtype and genotype was determined by real-time PCR and sequence analysis, respectively. Results: RSV infec- tions identified in 731 children. RSV subtype A caused 399 infections, and subtype B 332. Two subtype A genotypes (NA1 and GA5) and three subtype B genotypes (BA7, BA9 and BA10) were found. During persistent RSV biennial cycles namely four succeeding outbreaks, the new genotype from the previous smaller outbreak persevered into the up- coming larger outbreak. Conclusion: Our molecular-epidemiology study of RSV subtypes and genotypes during calen- dar months demonstrates that the biennial RSV cycle cannot be fully explained by the dynamic of the predominant cir- culating genotype of RSV. Other unknown factors account for the biennial cycle of RSV epidemics in Croatia.).

关键词： biennial Cycle Respiratory Syncytial Virus Types A and B Genotypes

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