1,720,966 research outputs found
the role of performance measurement systems to support quality improvement initiatives at supply chain level
No full textVirtual Organizations, Flexibility and Knowledge Sharing: The VDO Newtork Model Applied to Academy
No full textProduction planning of mixed model assembly lines: a heuristic mixed integer programming based approach
No full textProcess technology capabilities are becoming increasingly important as flexible manufacturing continues to be more prevalent, and as competition compels companies to provide expanded variety, at ever lower cost, so introducing plant and processes technological constraints. Model flexibility can also benefit from an appropriate production planning process, especially concerning mixed-model assembly lines, since it can facilitate master scheduling and line balancing activities, which are essential aspects of flexibility. Robust and practical planning approaches have to take into account two different aspects: the first consists in ensuring that the elaborated aggregate plan can be disaggregated into at least one detailed feasible plan for the realised demand, whereas the second in ensuring that this detailed plan is feasible at the operational level. This article faces the model flexibility challenge, reviewing and discussing the planning problem of a real world assembly manufacturing system, producing high volume and a variety of agricultural tractors and machines, analysing and resolving some important issues related to technological, organisational and managerial constraints. This article illustrates the implementation of an Advanced Planning System integrated with a mixed integer-programming model, which is solved by a new iterative heuristic approach capable of achieving interesting planning improvements for model-flexibility management
Analyzing enterprise networks needs: Action research from the mechatronics sector
No full textNew business models and theories are developing nowadays towards collaborative environments direction, and many new tools in sustaining companies involved in these organizations are emerging. Among them, a plethora of methodologies to analyze their needs are already developed for single companies. Few academic works are available about Enterprise Networks (ENs) need analysis. This paper presents the learning from an action research (AR) in the mechatronics sector: AR has been used in order to experience the issue of evaluating network needs and therefore define, develop, and test a complete framework for network evaluation. Reflection on the story in the light of the experience and the theory is presented, as well as extrapolation to a broader context and articulation of usable knowledge. © 2009 IFIP
Sviluppo di un Materiale Innovativo da Granuli di Pneumatici Usati per Applicazioni Acustiche
No full textIl lavoro si pone l’obiettivo di studiare una possibile forma di valorizzazione dei pneumatici fuori uso, favorendo il recupero di materia.
Oggetto del presente lavoro è infatti lo studio di nuovi materiali fonoisolanti, prodotti con granuli di pneumatici usati (in seguito abbreviati con “PG”); si sono in particolare investigate le proprietà acustiche e meccaniche di questi materiali, al fine di valutare le effettive prestazioni raggiungibili.
L’interesse per questo tipo di materiali è dimostrato in letteratura da numerosi Autori, unitamente alla fattibilità tecnica di validi processi industriali per questi materiali, e alla loro commerciabilità
An Agent Based Tool to Support Tactical Dialogues in Industrial Enterprise Networks: model and experimental campaign
No full textThe globalization of competition has entailed that organizations of developed countries have to face new kind of competitors with low labour cost, and often-advantageous exchange rates (resulting in favourable export selling prices). In such a scenario, innovation and organizational flexibility are becoming fundamental levers to enable enterprises to increase their competitiveness. For this reason, the need arises of a formalized methodology that enables organizational flexibility and capacity of performing innovation. This work originates from the analysis of a case study which highlighted that enterprise networks can enable organizational flexibility, and defined the formalization of the VDO concept – Virtual Development Office – a network organizational model based on an independent subject which has the role of enabling innovation in a collaborative environment to reach world class manufacturing capabilities. A multi-agents system based architecture is proposed to model and support tactical dialogues inside the network. The VDO has been modelled as a supervisor and coordinator agent able to perform a selection process in order to create the best coalition for managing emerging business opportunities. The context analyzed in this research work assumes a virtual market place where enterprises, represented by agents, can „„meet each other‟‟ and cooperate in order to achieve a common business goal given by a collaboration opportunity
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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