877 research outputs found

    Trust and the Decision to Outsource: Affective Responses and Cognitive Processes

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    Many of the various forms of cooperative strategy that firms are pursuing in today's economy entail the placing of important business functions in the hands of a partner. This paper examines the role of trust in the decision by a producer to place the marketing function in the hands of another entity, namely a cooperative. Although others have studied the effect of what may be termed general trust on inter-organizational relationships, few have examined the antecedents of that trust. We propose a model in which affective responses and cognitive processes are precursors to a sense of general trust, which, in turn, influences the outsourcing decision. These affective responses and cognitive processes have both direct and indirect (mediated) effects on the decision to place an important function in the hands of another entity. Perceptions of partner expertise in the business function at hand and the perceived need for the focal firm to maintain control over that function are also considered in the model. The model is tested in a somewhat novel context: the decision of cotton producers to outsource the marketing of their cotton fiber. Using survey data gathered from the actual decision-maker, and structural equations modeling, we find that the inclusion of affective responses and cognitive processes in our model produces a richer explanation of the outsourcing decision. The differences between the effects of affective responses and cognitive processes have potentially important implications for managers engaged in cooperative strategies and for the scholars who study them.Agribusiness,

    Discrimination of buried objects using time-frequency analysis and waveform norms

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    Ground Penetrating Radar (GPR) are widely used to probe the sub-surface. Recently, various time-frequency analyses has been proposed to discriminate buried land mines from other clutter objects and thus reduce GPR false alarm rates. This paper examines the possibility for discrimination and assesses it experimentally. The approach uses the Choi-Williams time-frequency transform to analyse ultra-wideband signal returns from a range of shallow buried objects. Single Value Decomposition is performed on isolated object time-frequency signatures. The signatures are evaluated using a set of waveform norms that discriminate in time, frequency and energy content. The results indicate that this approach could improve land mine detection rates and reduce false alarms

    Klipsun Magazine, 1971, Volume 02, Issue 01 - December

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    https://cedar.wwu.edu/klipsun_magazine/1006/thumbnail.jp

    Enhanced hydrogen storage in Ni/Ce composite oxides

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    The properties of dried (but not calcined) coprecipitated nickel ceria systems have been investigated in terms of their hydrogen emission characteristics following activation in hydrogen. XRD and BET data obtained on the powders show similarities to calcined ceria but it is likely that the majority of the material produced by the coprecipitation process is largely of an amorphous nature. XPS data indicate very little nickel is present on the outermost surface of the particles. Nevertheless, the thermal analytical techniques (TGA, DSC and TPD-MS) indicate that the hydrogen has access to the catalyst present and the nickel is able to generate hydrogen species capable of interacting with the support. Both unactivated and activated materials show two hydrogen emission features, viz. low temperature and high temperature emissions (LTE and HTE, respectively) over the temperature range 50 and 500 °C. A clear effect of hydrogen interaction with the material is that the activated sample not only emits much more hydrogen than the corresponding unactivated one but also at lower temperatures. H2 dissociation occurs on the reduced catalyst surface and the spillover mechanism transfers this active hydrogen into the ceria, possibly via the formation and migration of OH− species. The amount of hydrogen obtained (0.24 wt%) is 10× higher than those observed for calcined materials and would suggest that the amorphous phase plays a critical role in this process. The affiliated emissions of CO and CO2 with that of the HTE hydrogen (and consumption of water) strongly suggests a proportion of the hydrogen emission at this point arises from the water gas shift type reaction. It has not been possible from the present data to delineate between the various hydrogen storage mechanisms reported for ceria

    A systematic review of the cardiovascular risk of inhaled anticholinergics in patients with COPD

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    The long-term use of inhaled anticholinergic agents has recently been suggested to be associated with an excess risk of adverse cardiovascular (CV) outcomes in patients with COPD. We identified 15 published studies that reported on the association between long-term inhaled anticholinergic use and adverse CV outcomes. Only 3 of the studies were adequately designed randomized controlled trials (RCTs). The first RCT that suggested that anticholinergic agents increased the risk of adverse CV outcomes was the Lung Health Study (LHS). Smokers randomized to inhaled ipratropium had a significantly increased risk of CV death than smokers receiving placebo. The LHS results have been questioned as the statistical tests used in the study were not adjusted for multiple tests and endpoints, a convincing dose-effect relationship between ipratropium use and the adverse CV outcomes was not established, and most of the CV deaths in the ipratropium group occurred in patients who were non-compliant to ipratropium. The Investigating New Standards for Prophylaxis in Reducing Exacerbations (INSPIRE) was a RCT that compared the combination of salmeterol plus fluticasone against tiotropium in patients with COPD. All-cause mortality was significantly lower in the salmeterol plus fluticasone group (3%) compared to the tiotropium group (6%). Fatal CV events occurred in 1% of the salmeterol plus fluticasone group compared to 3% in the tiotropium group. The INSPIRE trial was not designed to be a mortality trial, lacked adequate adjudication of fatal outcomes, and lacked a full intention-to-treat analysis of the data. The Understanding Potential Long-Term Impacts on Function with Tiotropium (UPLIFT) trial was a RCT comparing tiotropium and placebo in patients with COPD. Follow-up in UPLIFT was planned for 1440 days (4 years) plus 30 days (1470 days) of post-treatment follow-up. At 1440 days with 95% of patient outcome accounted for, tiotropium was associated with a significant 13% reduction in all-cause mortality compared to placebo. However, at 1470 days with only 75% of patient outcome accounted for, tiotropium was associated with a non-significant 11% reduction in all-cause mortality compared to placebo. The relative risks for serious CV events, heart failure, and myocardial infarction were all significantly lower with tiotropium than placebo. It is not certain why such a wide disparity in findings exists among the published studies evaluating the CV risks of inhaled anticholinergic agents. Prospective, adequately powered RCTs are needed to provide more evidence for the CV safety of tiotropium

    Network security and data integrity in academia: an assessment and a proposal for large-scale archiving

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    A direct impediment to the optimal use of online databases is the increasing prevalence, severity, and toll of computer and network security incidents. Funding agencies should set up working groups that can provide essential services such as universal backup, archival storage, and mirroring of community resources, consistent with the key goal of security in academia: to preserve data and results for posterity

    Imaging SAR phenomenology of concealed vibrating targets

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    This paper describes the novel imaging of SAR phenomena produced from vibrating targets with multipath effects. It has been established, through numerical SAR experiments, that different physical mechanisms interact to produce new artefacts. The computations demonstrated that the edges of a dielectric medium can act as a source for multipath effects to emanate from, leading to the hypothesis that SAR artefacts can arise from through-wall SAR imagery. This deduction and mechanism of origin were validated through several experimental measurements, undertaken at Cranfield University’s Antennas and Ground-based SAR laboratory, yielding results that closely match those predicted
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