434 research outputs found

    Evaluating universities Twitter web pages responding to the Black Lives Matter movement

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    In the wake of the Black Lives Matter (BLM) movement in May 2020, many colleges and universities responded by making statements on their website and social media channels condemning racism. Higher education institutions began initiatives for diversity, equity, and inclusion (DEI) for faculty, staff, administrators, and students on campus. Three years later, this study investigates whether universities are still offering and promoting workshops, classes, events, and activities related to DEI to campus communities. To do so, the researchers conducted a content analysis on Twitter categorizing tweets over a one-month period, then they classified the Tweets using the top 10 colleges in the U.S. News & World Report published in 2021. Tweets were categorized by the authors with the following classifications: equality and diversity, academics, campus life, faculty and student research, campus upgrades, administrative information, community service, and others. The researchers discovered that all categories were utilized to engage current students and to attract potential new students. The faculty and student research category was tweeted the most by universities over the one month of Twitter classification. Even though the category of “diversity, equality and inclusion” was not the most tweeted category, it was still frequently utilized as higher education institutions strongly highlighted content and information related to DEI initiatives

    Ultrasonic locating devices for central venous cannulation: meta-analysis

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    OBJECTIVES: To assess the evidence for the clinical effectiveness of ultrasound guided central venous cannulation. DATA SOURCES: 15 electronic bibliographic databases, covering biomedical, science, social science, health economics, and grey literature. DESIGN: Systematic review and meta-analysis of randomised controlled trials. POPULATIONS: Patients scheduled for central venous access. INTERVENTION REVIEWED: Guidance using real time two dimensional ultrasonography or Doppler needles and probes compared with the anatomical landmark method of cannulation. DATA EXTRACTION: Risk of failed catheter placement (primary outcome), risk of complications from placement, risk of failure on first attempt at placement, number of attempts to successful catheterisation, and time (seconds) to successful catheterisation. DATA SYNTHESIS: 18 trials (1646 participants) were identified. Compared with the landmark method, real time two dimensional ultrasound guidance for cannulating the internal jugular vein in adults was associated with a significantly lower failure rate both overall (relative risk 0.14, 95% confidence interval 0.06 to 0.33) and on the first attempt (0.59, 0.39 to 0.88). Limited evidence favoured two dimensional ultrasound guidance for subclavian vein and femoral vein procedures in adults (0.14, 0.04 to 0.57 and 0.29, 0.07 to 1.21, respectively). Three studies in infants confirmed a higher success rate with two dimensional ultrasonography for internal jugular procedures (0.15, 0.03 to 0.64). Doppler guided cannulation of the internal jugular vein in adults was more successful than the landmark method (0.39, 0.17 to 0.92), but the landmark method was more successful for subclavian vein procedures (1.48, 1.03 to 2.14). No significant difference was found between these techniques for cannulation of the internal jugular vein in infants. An indirect comparison of relative risks suggested that two dimensional ultrasonography would be more successful than Doppler guidance for subclavian vein procedures in adults (0.09, 0.02 to 0.38). CONCLUSIONS: Evidence supports the use of two dimensional ultrasonography for central venous cannulation

    Toward digital twins for sawmill production planning and control : benefits, opportunities and challenges

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    Sawmills are key elements of the forest product industry supply chain, and they play important economic, social, and environmental roles. Sawmill production planning and control are, however, challenging owing to severalfactors, including, but not limited to, the heterogeneity of the raw material. The emerging concept of digital twins introduced in the context of Industry 4.0 has generated high interest and has been studied in a variety of domains, including production planning and control. In this paper, we investigate the benefits digital twins would bring to the sawmill industry via a literature review on the wider subject of sawmill production planning and control. Opportunities facilitating their implementation, as well as ongoing challenges from both academic and industrial perspectives, are also studied

    Simulation for Product Driven Systems

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    Due to globalisation, companies have to become more and more agile in order to face demand fluctuations and growing customisation needs. Indeed, the mass production market moves to a mass customization one, which could be defined as the production of a wide variety of end products at a low unit cost. During last years, many efforts have been done in order to improve operating system reactivity (with the Flexible Manufacturing initiative for example), but the manufacturing decision process did not really change, and then doesn't enable to fully make the most of these new operating system skills. Facing these new trends, a lot of new research works are focusing on identification technologies, like Auto-ID, biometry or vision ones. Radio Frequency Identification technology (RFID) represents a quick and safe way to track products, opening the way of linking informational and physical flows, and providing an accurate, real time vision of the shop floor. These new technologies appear like a catalyst to change the fifty years old way of controlling production through traditional MRP² systems

    Offersøy camping. Konsekvensutredning for naturmiljø

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    Foreliggende konsekvensutreding knyttet til naturmiljø for planlagt utvidelse av Offersøy camping i Alstahaug kommune, er gjort på oppdrag fra tiltakshaver Offersøy camping. Med bakgrunn i registrerte vegetasjonstyper og vilt, primært fugl, har naturmiljøet i planområdet blitt vurdert å ha liten verdi (1,0) og influensområdet å ha middels verdi (2,0). Omfanget av tiltakene vurderes til middels negativt (-1,0) for planområdet og lite negativt (-0,5) for influensområdet. Tiltakets samlede konsekvens blir dermed lite negativt (-) for naturmiljøet i planområdet. Ingen avbøtende tiltak er foreslått.publishedVersio

    Multi-agent systems negotiation to deal with dynamic scheduling in disturbed industrial context

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    International audienceIt is now accepted that using multi-agent systems (MAS) improve the reactivity to treat perturbation(s) within flexible manufacturing system. Intelligent algorithms shall be used to address these perturbation(s) and all smart decision entities within their environment have to continuously negotiate until their common and final goal is achieved. This paper proposes a negotiation-based control approach to deal with variability on a manufacturing system. It has initially formulated and modeled an environment in which all contributing entities or agents operate, communicate, and interact with each other productively. Then after, simulation and applicability implementation experiments on the basis of full-sized academic experimental platform have been conducted to validate the proposed control approach. Product and resource entities negotiate considering different key performance measures in order to set best priority-based product sequencing. This has been done with expectations that the applicability of the negotiation-based decision-making will be more adaptable to deal with perturbation(s) than another alternative decision-making approach called pure reactive control approach. The result showed that negotiation among the decisional entities has brought significant improvement in reducing makespan and hence conveyed better global performance of a manufacturing system
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