1,721,446 research outputs found
Maintenance in the Era of Industry 4.0: Issues and Challenges
No full textThe fourth generation of industrial activity enabled by smart systems and Internet-based solutions is known as Industry 4.0. Two most important characteristic features of Industry 4.0 are computerization using cyber-physical systems and the concept of “Internet of Things” adopted to produce intelligent factories. As more and more devices are instrumented, interconnected and automated to meet this vision, the strategic thinking of modern-day industry has been focused on deployment of maintenance technologies to ensure failure-free operation and delivery of services as planned.Maintenance is one of the application areas, referred to as Maintenance 4.0, in the form of self-learning and smart system that predicts failure, makes diagnosis and triggers maintenance. The paper addresses the new trends in manufacturing technology based on the capability of instrumentation, interconnection and intelligence together with the associated maintenance challenges in the era of collaborative machine community and big data environment.The paper briefly introduces the concept of Industry 4.0 and presents maintenance solutions aligned to the need of the next generation of manufacturing technologies and processes being deployed to realize the vision of Industry 4.0.The suggested maintenance approach to deal with new challenges due to the implementation of industry 4.0 is captured within the framework of eMaintenance solutions developed using maintenance analytics. The paper is exploratory in nature and is based on literature review and study of the current development in maintenance practices aligned to industry 4.0.</p
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
Dimensioning of Product Support : Issues, Challenges, and Opportunities
Full text linkPhD thesis in Offshore TechnologyThe research study examines issues related to dimensioning of product support strategies for
advanced industrial products on the basis of a case study conducted in a manufacturing company that
produces automated production line systems. The focus is mainly on investigating engineering
factors/parameters that influence product support.
Product support can be defined as any form of assistance that companies offer their customers to
gain maximum value from manufactured products. In general, it creates additional value/profit for
the product owner as well as for the manufacturer. It can be broadly classified into two, namely,
services to support product and services to support customers. Services to support the product are
mainly dependent on the product’s designed-in characteristics, operational environment, as well as
on owner’s operational, maintenance, and support strategies. Services to support the customer are
influenced by customer characteristics related to operational and maintenance skills and
capabilities. Dimensioning of product support is influenced by the product’s designed-in
characteristics – especially those characteristics related to RAMS (Reliability, Availability,
Maintainability and Supportability).
Within the scope of the case study, various approaches and methods to integrate RAMS in combination
with LCC (Life Cycle Costs) in design work processes to arrive at the most cost effective product
support strategy for industrial systems and components is examined. Often a considerable amount of
information and data about product failures/weaknesses and product RAMS characteristics is
available in various databases. Unfortunately, these information sources/databases are not usually
integrated with work processes in design, and thus these cannot be used for dimensioning of product
support effectively. An approach for integrating RAMS information into design processes is
suggested.
Furthermore, various aspects of product support strategies for functional products where the
customer buys only the performance, not the physical product is studied and analyzed. In the
conventional product scenario, the manufacturer benefits from
selling support services, whilst this profit generating process becomes a cost and liability in the
functional product scenario. Based on this study it is concluded that the product support strategy
for functional products will differ considerably compared to that for the conventional product.
Moreover, it is shown that the service delivery strategy of the manufacturer or service provider
must be in line with the service reception strategy of users/customers. The study also provides a
critical view on the role of the negotiation process in the development of cost effective and
competitive service delivery strategies. In addition, there exists a need to involve personnel who
are involved in the support services as well as in manufacturing, assembly, and quality assurance,
etc. processes in the design process to arrive at the best strategy for product support.
The scope of the thesis is limited to studying the relationship between a manufacturer of advanced
industrial products and customers using those products in production lines. Furthermore, this
thesis is limited to investigating engineering aspects of support services. Implications of the
research open up research areas related to product support strategies, functional products, as
well as to development of
methods for integrating RAMS information in design work processes
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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