523 research outputs found

    TAM and the World Wide Web

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    The purpose of this research-in-progress is to test the Technology Acceptance Model (TAM) with the World Wide Web as the users\u27 application. The investigation will validate, extend, or refute TAM. It will thus help identify guidelines for developing and using Web site

    Actin filament destruction by osmium tetroxide

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    Bibliometric Analysis of Female Authorship Trends and Collaboration Dynamics Over JBMR's 30-Year History

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    In academia, authorship is considered a currency and is important for career advancement. As the Journal of Bone and Mineral Research (JBMR) is the highest-ranked journal in the field of bone, muscle, and mineral metabolism and is the official publication of the American Society for Bone and Mineral Research, we sought to examine authorship changes over JBMR's 30-year history. Two bibliometric methods were used to collect the data. The “decade method” included all published manuscripts throughout 1 year in each decade over the past 30 years starting with the inaugural year, yielding 746 manuscripts for analysis. The “random method” examined 10% of published manuscripts from each of the 30 years, yielding 652 manuscripts for analysis. Using both methods, the average number of authors per manuscript, numerical location of the corresponding author, number of collaborating institutions, number of collaborating countries, number of printed manuscript pages, and the number of times each manuscript was cited all significantly increased between 1986 and 2015 (p < 10−4). Using the decade method, there was a significant increase in the percentage of female first authors over time from 35.8% in 1986 to 47.7% in 2015 (p = 0.02), and this trend was confirmed using the random method. The highest percentage of female first authors in 2015 was in Europe (60.0%), and Europe also had the most dramatic increase in female first authors over time (more than double in 2015 compared with 1986). Likewise, the overall number of female corresponding authors significantly increased during the past 30 years. With the increasing demands of publishing in academic medicine, understanding changes in publishing characteristics over time and by geographical region is important. These findings highlight JBMR's authorship trends over the past 30 years and demonstrate those countries having the most changes and where challenges still exist

    Directive 02-14: Tax Obligations of Persons Purchasing Cigarettes in Interstate Commerce for which the Massachusetts Cigarette Excise Has Not Been Paid

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    The development of accurate clinical biomarkers has been challenging in part due to the diversity between patients and diseases. One approach to account for the diversity is to use multiple markers to classify patients, based on the concept that each individual marker contributes information from its respective subclass of patients. Here we present a new strategy for developing biomarker panels that accounts for completely distinct patient subclasses. Marker State Space (MSS) defines "marker states" based on all possible patterns of high and low values among a panel of markers. Each marker state is defined as either a case state or a control state, and a sample is classified as case or control based on the state it occupies. MSS was used to define multi-marker panels that were robust in cross validation and training-set/test-set analyses and that yielded similar classification accuracy to several other classification algorithms. A three-marker panel for discriminating pancreatic cancer patients from control subjects revealed subclasses of patients based on distinct marker states. MSS provides a straightforward approach for modeling highly divergent subclasses of patients, which may be adaptable for diverse applications.</p

    The European Plate Observing System and the Arctic

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    The European Plate Observing System (EPOS) aims to integrate existing infrastructures in the solid earth sciences into a single infrastructure, enabling earth scientists across Europe to combine, model, and interpret multidisciplinary datasets at different time and length scales. In particular, a primary objective is to integrate existing research infrastructures within the fields of seismology, geodesy, geophysics, geology, rock physics, and volcanology at a pan-European level. The added value of such integration is not visible through individual analyses of data from each research infrastructure; it needs to be understood in a long-term perspective that includes the time when changes implied by current scientific research results are fully realized and their societal impacts have become clear. EPOS is now entering its implementation phase following a four-year preparatory phase during which 18 member countries in Europe contributed more than 250 research infrastructures to the building of this pan-European vision. The Arctic covers a significant portion of the European plate and therefore plays an important part in research on the solid earth in Europe. However, the work environment in the Arctic is challenging. First, most of the European Plate boundary in the Arctic is offshore, and hence, sub-sea networks must be built for solid earth observation. Second, ice covers the Arctic Ocean where the European Plate boundary crosses through the Gakkel Ridge, so innovative technologies are needed to monitor solid earth deformation. Therefore, research collaboration with other disciplines such as physical oceanography, marine acoustics, and geo-biology is necessary. The establishment of efficient research infrastructures suitable for these challenging conditions is essential both to reduce costs and to stimulate multidisciplinary research.Le systĂšme European Plate Observing System (EPOS) vise l’intĂ©gration des infrastructures actuelles en sciences de la croĂ»te terrestre afin de ne former qu’une seule infrastructure pour que les spĂ©cialistes des sciences de la Terre des quatre coins de l’Europe puissent combiner, modĂ©liser et interprĂ©ter des ensembles de donnĂ©es multidisciplinaires moyennant diverses Ă©chelles de temps et de longueur. Un des principaux objectifs consiste plus particuliĂšrement Ă  intĂ©grer les infrastructures de recherche existantes se rapportant aux domaines de la sismologie, de la gĂ©odĂ©sie, de la gĂ©ophysique, de la gĂ©ologie, de la physique des roches et de la volcanologie Ă  l’échelle paneuropĂ©enne. La valeur ajoutĂ©e de cette intĂ©gration n’est pas visible au moyen des analyses individuelles des donnĂ©es Ă©manant de chaque infrastructure de recherche. Elle doit plutĂŽt ĂȘtre considĂ©rĂ©e Ă  la lumiĂšre d’une perspective Ă  long terme, lorsque les changements qu’impliquent les rĂ©sultats de recherche scientifique actuels auront Ă©tĂ© entiĂšrement rĂ©alisĂ©s et que les incidences sur la sociĂ©tĂ© seront claires. Le systĂšme EPOS est en train d’amorcer sa phase de mise en oeuvre. Cette phase succĂšde Ă  la phase prĂ©paratoire de quatre ans pendant laquelle 18 pays membres de l’Europe ont soumis plus de 250 infrastructures de recherche en vue de l’édification de cette vision paneuropĂ©enne. L’Arctique couvre une grande partie de la plaque europĂ©enne et par consĂ©quent, il joue un rĂŽle important dans les travaux de recherche portant sur la croĂ»te terrestre en Europe. Cependant, le milieu de travail de l’Arctique n’est pas sans dĂ©fis. PremiĂšrement, la majoritĂ© de la limite de la plaque europĂ©enne se trouvant dans l’Arctique est situĂ©e au large, ce qui signifie que des rĂ©seaux marins doivent ĂȘtre amĂ©nagĂ©s pour permettre l’observation de la croĂ»te terrestre. DeuxiĂšmement, de la glace recouvre l’ocĂ©an Arctique, lĂ  oĂč la limite de la plaque europĂ©enne traverse la dorsale de Gakkel, ce qui signifie qu’il faut recourir Ă  des technologies innovatrices pour surveiller la dĂ©formation de la croĂ»te terrestre. C’est pourquoi les travaux de recherche doivent nĂ©cessairement se faire en collaboration avec d’autres disciplines comme l’ocĂ©anographie physique, l’acoustique marine et la gĂ©obiologie. L’établissement d’infrastructures de recherche efficaces capables de faire face Ă  ces conditions rigoureuses s’avĂšre essentiel, tant pour rĂ©duire les coĂ»ts que pour stimuler la recherche multidisciplinaire

    FIBCD1 Deficiency Decreases Disease Severity in a Murine Model of Invasive Pulmonary Aspergillosis

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    Aspergillus fumigatus is a ubiquitous mold associated with the development of pulmonary diseases that include invasive pulmonary aspergillosis (IPA), an often fatal opportunistic infection. FIBCD1 is a transmembrane endocytic membrane receptor widely expressed on human epithelium. Although FIBCD1 was previously shown to bind chitin, modulate fungal colonization of the gut, and inhibit intestinal inflammation, the role of FIBCD1 in the context of lung fungal infection remains unknown. In this study, we observed that mortality, fungal burden, and tissue histopathology were decreased in the absence of FIBCD1 in murine IPA. Quantitative RT-PCR analyses demonstrated decreased inflammatory cytokines in the lungs of neutrophil-depleted FIBCD1−/− mice with IPA, when compared with wild-type controls. In contrast, inflammatory cytokines were increased in immune-competent FIBCD1−/− mice after fungal aspiration, suggesting that the presence of neutrophils is associated with cytokine modulation. In contrast to the clear IPA phenotype, FIBCD1−/− mice with systemic infection or bleomycin-induced lung injury exhibited similar morbidity and mortality when compared with their wild-type counterparts. Thus, our study identifies a detrimental role of FIBCD1 in IPA
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