48 research outputs found

    RFID together with multi-agent systems to control global value chains

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    Nowadays, the cooperative intelligent transport systems are part of a largest system. Transportations are modal operations integrated in logistics and, logistics is the main process of the supply chain management. The supply chain strategic management as a simultaneous local and global value chain is a collaborative/cooperative organization of stakeholders, many times in co-opetition, to perform a service to the customers respecting the time, place, price and quality levels. The transportation, like other logistics operations must add value, which is achieved in this case through compression lead times and order fulfillments. The complex supplier's network and the distribution channels must be efficient and the integral visibility (monitoring and tracing) of supply chain is a significant source of competitive advantage. Nowadays, the competition is not discussed between companies but among supply chains. This paper aims to evidence the current and emerging manufacturing and logistics system challenges as a new field of opportunities for the automation and control systems research community. Furthermore, the paper forecasts the use of radio frequency identification (RFID) technologies integrated into an information and communication technologies (ICT) framework based on distributed artificial intelligence (DAI) supported by a multi-agent system (MAS), as the most value advantage of supply chain management (SCM) in a cooperative intelligent logistics systems. Logistical platforms (production or distribution) as nodes of added value of supplying and distribution networks are proposed as critical points of the visibility of the inventory, where these technological needs are more evident

    [Accepted Manuscript] The ACTA PORT-score for predicting perioperative risk of blood transfusion for adult cardiac surgery.

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    : A simple and accurate scoring system to predict risk of transfusion for patients undergoing cardiac surgery is lacking. : We identified independent risk factors associated with transfusion by performing univariate analysis, followed by logistic regression. We then simplified the score to an integer-based system and tested it using the area under the receiver operator characteristic (AUC) statistic with a Hosmer-Lemeshow goodness-of-fit test. Finally, the scoring system was applied to the external validation dataset and the same statistical methods applied to test the accuracy of the ACTA-PORT score. : Several factors were independently associated with risk of transfusion, including age, sex, body surface area, logistic EuroSCORE, preoperative haemoglobin and creatinine, and type of surgery. In our primary dataset, the score accurately predicted risk of perioperative transfusion in cardiac surgery patients with an AUC of 0.76. The external validation confirmed accuracy of the scoring method with an AUC of 0.84 and good agreement across all scores, with a minor tendency to under-estimate transfusion risk in very high-risk patients. : The ACTA-PORT score is a reliable, validated tool for predicting risk of transfusion for patients undergoing cardiac surgery. This and other scores can be used in research studies for risk adjustment when assessing outcomes, and might also be incorporated into a Patient Blood Management programme.<br/

    Images of academic leadership in New Zealand Institutes of Technology / Polytechnics.

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    As accountability stakes continue to be raised in all education sectors, leadership as a factor that can have an impact on improved student outcomes is being studied with heightened interest. This study was conducted from 2011 to 2012 in New Zealand's large urban polytechnics with the aim of investigating the nature and expectations of academic leadership. The conceptualisation of academic leadership in the theory base is fraught with both complexity and paradox and is often presented in contradictory terms. The study identifies images of academic leadership practised by directors of an academic front line, by actors in the front line and supporters on the side line. In relation to polytechnic settings it is concluded that new and varied forms of academic leadership are provided by spreading the role that encompasses both leadership and management
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