1,579 research outputs found
Positioning, Articulating, and Crafting Conceptual Articles on Entrepreneurship
Conceptual Articles Are Important for Theory Building but the Special Challenges of Developing Conceptual Articles on Entrepreneurship Has Not Been Fully Considered. We Begin to Fill This Gap by Discussing the Nature of Conceptual Articles on Entrepreneurship, Particularly Those Geared for Publication in Entrepreneurship Theory and Practice. We Introduce Three Dimensions of the Entrepreneurship Discipline—uniqueness, Relevance, and Multiplicity—and Discuss How They Can Affect the Positioning of Conceptual Articles and the Articulation of their Contribution. We Also Enumerate Some Basic Principles for Crafting Good Conceptual Articles and Present Guidelines based on Our Discussion
A note on family influence and the adoption of discontinuous technologies in family firms
The 4Cs model of command, continuity, community, and connections is useful for examining the effect of family influence on the adoption of discontinuous technologies. However, assuming that family influence differs only in degree rather than kind is naive because such an assumption ignores the likelihood of heterogeneous behaviors among family firms. In this conceptual note, we extend prior work and explain how heterogeneity in the family’s relative emphasis on command, continuity, community, and connections requires that the multifaceted and potentially nonlinear nature of family influence be considered when analyzing strategic decisions concerning family firm innovation
Transaction Costs and Outsourcing Decisions in Small and Medium-Sized Family Firms
An important difference between family and nonfamily firms, and among different types of family firms, is in the way they make outsourcing decisions and thereby define the boundaries of the firm. The authors propose that transaction costs arising from human asset specificity, threats of opportunism, and risk aversion will make small-and medium-sized family firms operating with technologies of low to medium complexity less likely to outsource than comparable nonfamily firms. The authors also argue that the limiting influence of transaction costs on the outsourcing decisions of family firms may be mitigated by variations in available suppliers, goals, and ownership structures
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A roadmap for China to peak carbon dioxide emissions and achieve a 20% share of non-fossil fuels in primary energy by 2030
As part of its Paris Agreement commitment, China pledged to peak carbon dioxide (CO2) emissions around 2030, striving to peak earlier, and to increase the non-fossil share of primary energy to 20% by 2030. Yet by the end of 2017, China emitted 28% of the world's energy-related CO2 emissions, 76% of which were from coal use. How China can reinvent its energy economy cost-effectively while still achieving its commitments was the focus of a three-year joint research project completed in September 2016. Overall, this analysis found that if China follows a pathway in which it aggressively adopts all cost-effective energy efficiency and CO2 emission reduction technologies while also aggressively moving away from fossil fuels to renewable and other non-fossil resources, it is possible to not only meet its Paris Agreement Nationally Determined Contribution (NDC) commitments, but also to reduce its 2050 CO2 emissions to a level that is 42% below the country's 2010 CO2 emissions. While numerous barriers exist that will need to be addressed through effective policies and programs in order to realize these potential energy use and emissions reductions, there are also significant local environmental (e.g., air quality), national and global environmental (e.g., mitigation of climate change), human health, and other unquantified benefits that will be realized if this pathway is pursued in China
Physical Acoustics
Contains reports on four research projects.U. S. Navy (Office of Naval Research) under Contract Nonr- 1841(42
Capsule enlargement in Cryptococcus neoformans confers resistance to oxidative stress suggesting a mechanism for intracellular survival
Cryptococcus neoformans is a facultative intracellular pathogen. The most distinctive feature of C. neoformans is a polysaccharide capsule that enlarges depending on environmental stimuli. The mechanism by which C. neoformans avoids killing during phagocytosis is unknown. We hypothesized that capsule growth conferred resistance to microbicidal molecules produced by the host during infection, particularly during phagocytosis. We observed that capsule enlargement conferred resistance to reactive oxygen species produced by H(2)O(2) that was not associated with a higher catalase activity, suggesting a new function for the capsule as a scavenger of reactive oxidative intermediates. Soluble capsular polysaccharide protected C. neoformans and Saccharomyces cerevisiae from killing by H(2)O(2). Acapsular mutants had higher susceptibility to free radicals. Capsular polysaccharide acted as an antioxidant in the nitroblue tetrazolium (NBT) reduction coupled to beta-nicotinamide adenine dinucleotide (NADH)/phenazine methosulfate (PMS) assay. Capsule enlargement conferred resistance to antimicrobial peptides and the antifungal drug Amphotericin B. Interestingly, the capsule had no effect on susceptibility to azoles and increased susceptibility to fluconazole. Capsule enlargement reduced phagocytosis by environmental predators, although we also noticed that in this system, starvation of C. neoformans cells produced resistance to phagocytosis. Our results suggest that capsular enlargement is a mechanism that enhances C. neoformans survival when ingested by phagocytic cells.We thank Dr J.D. Nosanchuk for the use of defensins and Dr Steinman for the kind gift of A. castellanii strains. We thank Dr J.C. Arguelles and Pilar González (Universidad de Murcia, Spain) for providing protocols to measure catalase activity, and Drs Carlos and Juana Maria Gancedo (CSIC, Spain) for the permission to use their technical resources and for their helpful discussions. We are indebted to Dr F. Usera and Rosa Hidalgo for their collaboration, help and technical support in the use of the γ-irradiator from the animal facility from the National Center for Biotechnology (CSIC, Spain). We warmly thank Josefa Casas for her technical support, and all the members from the Mycology Service from the National Center for Microbiology (Instituto de Salud Carlos III) for their helpful discussions. M.V.C. is funded by a research contract from the Agencia Española de Cooperación Internacional (AECI). O.Z. is a ‘Ramón y Cajal’ fellow from the Ministerio Español de Educación y Ciencia (MEC) and is funded by Grants MPY1025/06 from the MEC and 1181/06 from el Instituto de Salud Carlos III.S
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