610 research outputs found

    Movilidad por sliding de Mycobacterium chubuense

    Get PDF

    Does Co-Location Accelerate Knowledge Outflows from FDI? The Role of MMC Subsidiaries' Technology Sourcing Strategies

    Get PDF
    Despite the strategic importance of the knowledge outflows from FDI for local firms’ competitiveness, no study has focused on the speed at which this phenomenon takes place. However, this issue is crucial since the speed at which firms absorb external knowledge influences the time they need to carry out subsequent innovations, their ability to adapt to external changes and enter new markets, thus ultimately affecting their chances to achieve a competitive advantage. This paper tries to fill this gap, by investigating the temporal patterns of knowledge outflows between foreign subsidiaries and firms located in host-regions. Combining International Business literature with insights on Innovation Strategy, we provide evidence on the timing of this phenomenon, and discuss the role played by multinational firms’ technology sourcing strategies

    Elementary art education : an expendable curriculum?

    Get PDF
    This ethnographic study was initiated by the concern that elementary art education is an endangered subject, not only marginalised but expendable. This concern was based on informal conversations with pre- and in-service teachers and observations during pre-service teacher evaluations in elementary schools in Ontario, Canada. From these conversations and observations, it seemed that the emphasis in elementary schools is on core subjects with anything else deemed to provide balance alongside initiatives to improve literacy, numeracy, character, and inclusion. The school day is teeming with subjects and initiatives and the resulting crowded curriculum may be affecting teaching and learning in non-core subjects, such as art, negatively. In addition to such external issues are individual challenges faced by generalist teachers with little or no background in visual arts. These teachers’ lack of comfort with art might, I surmised at the start of this study, impede the effective planning, implementation, and assessment of art education. To understand what impacts art education, specifically visual arts instruction, I used a variety of interpretive enquiry methods to interrogate what makes art in elementary schools a vulnerable if not an expendable subject. Initially seeking to find out if art was expendable, I went beyond this to explore perceptions of teachers on teaching art through a localised small-scale study involving 19 elementary teachers in two school boards in north-eastern Ontario. I conducted interviews, recorded observations, and read related documents to answer my research questions, which were as follows: Why is art education important, or not, for students, educators, parents, and other stakeholders? Is art jettisoned in favour of implementing other policies and curricular subjects? Do teachers use other programmes and initiatives as an excuse not to teach art? How do teachers feel about teaching art? Is art expendable? Nussbaum’s (1997) capacities (critical self-examination, connectedness with the world, narrative imagination, scientific understanding) provide the theoretical framework for the study, support the analysis of the state of art education, and help defend its importance at the elementary level. Possible barriers to effective art education (history, policy, practice, economics, geography) and how they may affect learners’ ability to connect with the capacities through visual arts instruction are also analysed and discussed. Through this study, I found that elementary art education is threatened in the participants’ schools for a number of reasons including external issues (minimal attention to, inconsistent delivery of, and poor funding for the mandated art curriculum; a high focus on literacy, numeracy, and other initiatives) and internal issues (discomfort with teaching art; wide range of concepts of art). The study concludes with concerns regarding overall problems with miscommunication and disconnection that threaten effective elementary art education. Recommendations for addressing external and internal issues, and these overall problems are outlined, along with plans to improve art education in pre-service teacher education, in-service practice, and the world beyond the classroom.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

    When does crowdsourcing benefit firm stock market performance?

    Get PDF
    Crowdsourcing is a particular form of open innovation (OI) that aims to boost idea-generation in innovation processes. The underlying rationale is that the collective intelligence of a large number of contributors outside the firm’s boundaries increases the likelihood of achieving ‘extreme outcomes’, i.e., high quality ideas with exceptional business potential. Due to the idiosyncrasies that differentiate crowdsourcing from other forms of OI, the findings from prior research on the performance implications of OI cannot be directly extended to crowdsourcing. Similarly, the findings on the effect of internal R&D on firm performance cannot be directly applied to crowdsourcing due to the greater uncertainty in dealing with a crowd of unknown individuals outside the organization whose ideas have to be evaluated and ultimately processed internally. Thus, while crowdsourcing research has recently burgeoned, it is ambiguous as to whether and when crowdsourcing is beneficial for firms. In fact, the overall effect of crowdsourcing on a firm’s future profits has not been thoroughly investigated. To fill this gap, we conducted an event study analyzing stock market reactions to crowdsourcing announcements, a forward-looking market-based measure able to isolate the effect of crowdsourcing on a firm’s future profits, which we refer to as firm stock market performance. Drawing on the resource-based view, we argue that an external crowd can become a valuable resource if the firm is able to extract value from it. Our findings show that two key contingency factors, i.e., brand value and investment opportunities, determine the boundary conditions that enable firms to extract value from the crowd, resulting in a positive stock market reaction to the announcement of a crowdsourcing campaign. In addition to advancing scholarly knowledge on crowdsourcing, our results provide practitioners with relevant indications for profitable crowdsourcing campaigns

    Six novel mutations in the proopiomelanocortin and melanocortin receptor 4 genes in severely obese adults living in southern Italy.

    Get PDF
    BACKGROUND: The genetic characterization of obese individuals could clarify the molecular mechanisms underlying body weight regulation and lead to targeted therapy. Here we report variants of the proopiomelanocortin (POMC) and melanocortin receptor 4 (MC4R) genes detected in severely obese adults living in southern Italy. METHODS: A total of 196 unrelated nondiabetic severely obese individuals [111 females and 85 males; mean (SD) age, 32.2 (11.5) years; mean body mass index, 48.8 (8.1) kg/m(2)] and 100 normal-weight healthy volunteers (34 males and 66 females) entered the study. POMC and MC4R were genotyped by sequencing analysis. Leptin, insulin, glucose, and the lipid profile were measured in fasting serum samples. We used the protein truncation test to verify the stop-codon mutation. Anthropometric measurements, sitting blood pressure, and heart rate were also recorded. RESULTS: Of the obese participants, 1.5% had mutations in POMC exon 3 (new mutations, P231L and E244X; known, R236G) and 2.5% had MC4R mutations (new mutations, W174C, Q43X, S19fsX51, and I317V; known, A175T). These mutations were not present in the controls. Gene polymorphisms were identified in similar percentages of severely obese and nonobese individuals, i.e., respectively, 52.5% and 51% (POMC) and 1% and 2% (MC4R). CONCLUSIONS: We detected 2 new POMC mutations and 4 new MC4R mutations in a large number of severely obese adults living in southern Italy. These mutations, not present in normal-weight individuals, are further evidence that defects in the melanocortin pathway are related to severe obesity

    Ab initio study of the modification of elastic properties of alpha-iron by hydrostatic strain and by hydrogen interstitials

    Full text link
    The effect of hydrostatic strain and of interstitial hydrogen on the elastic properties of α\alpha-iron is investigated using \textit{ab initio} density-functional theory calculations. We find that the cubic elastic constants and the polycrystalline elastic moduli to a good approximation decrease linearly with increasing hydrogen concentration. This net strength reduction can be partitioned into a strengthening electronic effect which is overcome by a softening volumetric effect. The calculated hydrogen-dependent elastic constants are used to determine the polycrystalline elastic moduli and anisotropic elastic shear moduli. For the key slip planes in α\alpha-iron, [11ˉ0][1\bar{1}0] and [112ˉ][11\bar{2}], we find a shear modulus reduction of approximately 1.6% per at.% H.Comment: Updated first part of 1009.378

    A bibliometric review of financial market integration literature

    Get PDF
    We undertake a meta-literature review on the topic of financial market integration (FMI), covering 260 articles from 1981 to 2021. Our review consists of quantitative analysis of bibliometric citations concomitant with qualitative analysis of content, towards a goal of identifying primary research streams and proposing directions for future research. We identify five research groups: (1) portfolio diversification with financial market integration; (2) general equity market integration; (3) financial market linkage with respect to crises and events; (4) time-varying financial market integration; and (5) co-movements and spillovers between commodities and financial markets; as well as present a wide array of future research directions. We conduct an extensive review of FMI literature, answering several questions: (1) What is the domain of FMI research?; (2) What are the influential aspects of top journals and authors, and the characteristics of the most studied topics?; (3) What are the past and current key research streams in FMI literature?; and (4) What are the substantial future relevant research questions to explore regarding FMI? Given the ongoing attention on financial market integration by both academicians and policy makers, our results should be of great interest

    Hydrogen charging in nickel and iron and its effect on their magnetic properties

    Get PDF
    The current study was undertaken to explore the possibility of detecting hydrogen cavitation in magnetic materials through magnetic propertymeasurements. It is known that dissolved hydrogen in a material causes microvoids. These voids may affect the structure‐sensitive magnetic properties such as coercivity and remanence. In this study, hydrogen was introduced into nickel and iron by two processes, namely thermal charging and cathodic charging. The effect on the magnetic properties was measured. In addition, the variation of the magnetic properties with porosity was studied
    • 

    corecore