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排序方式: 共有818条查询结果,搜索用时 15 毫秒
811.
We empirically compare the contributions of venture capital (VC) and private equity backed firms, including those backed by government subsidized innovation investment funds (IIFs), in the Australian economy by analyzing employment, R&D, patents, time to IPO, and market capitalization from market inception to August 2012. Overall, the data highlight a central role for VC and IIF investment in facilitating R&D, innovation, and economic growth. Our IIF findings highlight the success of government sponsorship of VC under the Australian program design, which is sharply in contrast with the lack of success of government venture programs in other countries. 相似文献
812.
Vernet Lasrado Stephen Sivo Cameron Ford Thomas O’Neal Ivan Garibay 《The Journal of Technology Transfer》2016,41(2):205-219
Business incubators have become a popular policy option and economic development intervention tool. However, recent research shows that incubated firms may not benefit significantly from their incubator relationships, and may even be more vulnerable to failure post departure (graduation) from an incubator. These findings suggest that the impact of business incubation on new venture viability may be contingent on the type of support offered by an incubator and attributes of business environments within which incubation services are provided. Incubation services that protect and isolate ventures from key resource dependencies may hinder venture development and increase subsequent vulnerability to environmental demands. Alternatively, incubation services that help ventures connect and align with key resource dependencies are likely to promote firm survival. We propose that incubators vary in the services and resources they offer, and that university incubators typically provide greater connectivity and legitimacy with respect to important contingencies associated with key industry and community stakeholders. This leads us to propose that university affiliation is an important contingency that affects the relationship between firms’ participation in incubators and their subsequent performance. The purpose of this study is to evaluate this contingency by examining whether firms graduating from university incubators attain higher levels of post-incubation performance than firms participating in non-university affiliated incubators. We test this by evaluating the performance of a sample of graduated firms associated with the population of university-based incubators in the US contrasted against the performance of a matched cohort of non-incubated firms. The analysis uses an enhanced dataset that tracks the number of employees, sales, and the entry and graduation (departure) points of incubated firms from a university incubation program, so as to delineate the scope of influence of the incubator. 相似文献
813.
Law and Philosophy - Lately it has become a commonplace to complain about the injustice of mass incarceration. I share the sentiment that this phenomenon has been an injustice. But it also has... 相似文献
814.
Adolescent Children of Adolescent Mothers: The Impact of Family Functioning on Trajectories of Development 总被引:1,自引:1,他引:0
V. Susan Dahinten Jennifer D. Shapka J. Douglas Willms 《Journal of youth and adolescence》2007,36(2):195-212
This study drew on four cycles of longitudinal data from the Canadian National Longitudinal Survey of Children and Youth to
examine the academic and behavioural trajectories of youth between 10 and 15 years of age as a function of maternal age at
childbearing. The analyses controlled for several family characteristics and examined the mediating effects of three family
functioning variables (maternal depression, and nurturing and rejecting parenting behaviours). Maternal age was related to
academic competency in math (standardized Math scores), externalizing disorders (Property Offences, Hyperactivity-Inattention),
and internalizing disorders (Anxiety-Emotional Disorder). After accounting for family characteristics, the children of the
young and older teen mothers retained their disadvantage in Math scores and Property Offences, respectively, whereas the children
of older mothers lost the advantages that they had exhibited at age 10 (for Property Offences, the benefits were mediated
through family functioning). These results have implications for future research and for the development of policy and programming
targeting the healthy development of youth.
相似文献
V. Susan DahintenEmail: |
815.
Effect of Sterilants on Amplification and Detection of Target DNA from Bacillus cereus Spores 下载免费PDF全文
James M. Robertson Ph.D. Douglas L. Anders Ph.D. Francene Basalyga M.D. Julie Millar M.F.S. Donia Palomo Slack M.S. Robert Bever Ph.D. 《Journal of forensic sciences》2018,63(3):699-707
To conceal criminal activity of a bioterrorist or agroterrorist, the site of pathogen generation is often treated with sterilants to kill the organisms and remove evidence. As dead organisms cannot be analyzed by culture, this study examined whether DNA from sterilant‐treated Bacillus cereus spores was viable for amplification. The spores were exposed to five common sterilants: bleach, Sterilox®, oxidizer foam (L‐Gel), a peroxyacid (Actril®), and formaldehyde vapor. The spores were inoculated on typical surfaces found in offices and laboratories to test for environmental effects. It was found that the surface influenced the efficiency of recovery of the organisms. The DNA isolated from the recovered spores was successfully detected using RT‐qPCR for all treatments except for formaldehyde, by amplifying the phosphatidylinositol phospholipase C and sphingomyelinase genes. The results demonstrated that evidence from sites treated with sterilants can still provide information on the uncultured organism, using DNA amplification. 相似文献
816.
Michael R. Ford 《Journal of Public Affairs (14723891)》2023,23(2):e2852
This article uses a perceptions-based framework to study how local governing actors define local control, and, to identify the determinants of definition alignment among local officials. A mix of survey and administrative data from Wisconsin officials is used to test nine hypotheses. The results indicate there is wide variation in how local government leaders define local control, and that alignment on the concept's meaning is predicted by ideology, perceived erosion of local control, and positional characteristics. The study concludes that local governments should incorporate a working definition of local control in planning and on-boarding processes in order to provide governing relevance to the concept. 相似文献
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