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Development of a framework to evaluate the practicality of 5G for intralogistics use cases in standalone non-public networks
Get PDFThesis (MEng) -- Stellenbosch University, 2022.ENGLISH ABSTRACT: In the context of Industry 4.0, intralogistics is exposed to an increasingly complex and dynamic
environment, driven by a high level of product customisation and complex manufacturing processes.
One approach to deal with these changing conditions is the decentralised and intelligent connectivity
of intralogistics systems. However, wireless connectivity presents a major challenge in the industry,
due to strict requirements such as safety, security and real-time data transmission and processing.
Furthermore, this is becoming increasingly important with the mass adoption of technologies used
for time-critical applications, such as autonomous mobile robots.
The fifth generation of mobile communications (5G) is a promising telecommunication technique to
fill this gap and meet the requirements of safety-critical and time-critical applications. In addition,
5G offers the possibility of establishing private 5G networks. Private 5G networks, referred to as
standalone non-public networks, provide exclusive coverage for private organisations and offer high
intrinsic network control and data security through isolation from public networks and the dedicated
use of pure 5G components. However, at the present time 5G is still in the development process and
is being gradually introduced in a continuous series of releases. In this context, the release process of
5G lacks transparency regarding the performance of 5G in individual releases, complicating the
successful adoption of 5G as an industrial communication technique. Additionally, the evaluation of
5G against the specified target performance is insufficient due to the impact of the environment and
external interfering factors on 5G in the industrial environment.
The proposed framework takes a holistic approach to evaluate the practicality of 5G for intralogistics
use cases by considering two fundamental perspectives. The first of these considers the use case and
analyses technical parameters and characteristics of the use case to evaluate the feasibility of 5G. The
second perspective investigates the application’s environment, which has a substantial impact on the
practicality of 5G, for instance, the influence of surrounding materials. By adopting both perspectives,
a holistic conclusion on the practicality of 5G can be drawn. A case study validates the proposed
framework, in which an autonomous mobile robot use case is evaluated for the practicality of 5G.
Subsequently, empirical measurements and the integration into the 5G standalone non-public network
are carried out.AFRIKAANS OPSOMMING: In die konteks van Industrie 4.0 word intralogistiek blootgestel aan ‘n toenemend komplekse en
dinamiese omgewing. Hierdie word gedryf deur ‘n hoë vlak van produkaanpassing en komplekse
vervaardigingsprosesse. Een benadering om hierdie veranderende toestande te hanteer, is die
gedesentraliseerde en intelligente konnektiwiteit van intralogistieke stelsels. Draadlose
konnektiwiteit bied egter ‘n groot uitdaging in industriële omgewings, as gevolg van die
wisselwerking van streng vereistes soos veiligheid, sekuriteit en intydse data-oordrag en -verwerking.
Verder word dit al hoe belangriker met die massa-opneming van tegnologieë wat vir tyd-kritiese
toepassings gebruik word, soos outonome mobiele robotte.
Die vyfde generasie van mobiele kommunikasie (5G) word gesien as ‘n belowende
telekommunikasietegniek om hierdie gaping te vul en aan die vereistes van tyd-kritiese toepassings
te voldoen. Boonop bied 5G ook die moontlikheid om private 5G netwerke te vestig. Private 5G
netwerke, waarna verwys word as selfstandige en nie-openbare netwerke, bied eksklusiewe dekking
vir private organisasies en bied hoë intrinsieke netwerkbeheer en datasekuriteit deur isolasie van
publieke netwerke. Op die oomblik is 5G egter steeds in die ontwikkelingsproses en word geleidelik
in vrystellings bekendgestel. In hierdie konteks het die vrystellingsproses van 5G nie deursigtigheid
oor die prestasie van 5G in individuele vrystellings nie, wat dus die suksesvolle aanvaarding van 5G
as ‘n industriële kommunikasie tegniek belemmer. Boonop is die evaluering van 5G teenoor die
gespesifiseerde teikenprestasie onvoldoende as gevolg van die impak van die omgewing en eksterne
steurende faktore op 5G.
Die voorgestelde raamwerk neem ‘n holistiese benadering om die praktiese toepassing van 5G vir
intralogistieke gebruiksgevalle te evalueer deur twee fundamentele perspektiewe te oorweeg. Die
eerste perspektief beskou die gebruiksgeval en analiseer tegniese parameters en kenmerke van die
gebruiksgeval om die praktiese toepassing van 5G te evalueer. Die tweede perspektief ondersoek die
omgewing van die toepassing, wat ‘n wesenlike impak kan hê op die praktiese toepassing van 5G,
byvoorbeeld soos deur materiale wat die kwaliteit van die sein belemmer. Deur beide perspektiewe
te ondersoek, kan ‘n holistiese gevolgtrekking oor die praktiese toepassing van 5G as ‘n draadlose
kommunikasie tegniek gemaak word. ‘n Outonome mobiele robotgevallestudie dien om die
voorgestelde raamwerk te valideer, waarin die outonome mobiele robotgebruiksgeval eers geëvalueer
word vir die praktiese toepassing van 5G, waarna empiriese metings en die integrasie in die 5Gselfstandige
nie-openbare netwerk uitgevoer word.Master
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Abschlussbericht (Sachbericht zum Verwendungsnachweis)
Get PDFDas Projekt „CERCLE“ (Circular Economy and Remanufacturing Collaboration for Europe) zielte darauf ab, die Forschungskompetenzen im Bereich der Circular Economy auf eine europäische Ebene auszuweiten und hierzu ein Antrag im europäischen Programm HORIZON zu stellen. Dies steht sowohl im Einklang mit den förderpolitischen Zielen des HAW-EuropaNetzwerke Programms, das die internationale Vernetzung und die Antragsstellung in europäischen und internationalen Programmen zur Forschungsförderung unterstützt sowie auch mit den strategischen Zielen der Hochschule Reutlingen. Der wissenschaftlich-technische Stand, an den angeknüpft wurde, umfasste bestehende Ansätze zur Wiederverwertung und Remanufacturing, die jedoch oft isoliert und ohne umfassende europäische Zusammenarbeit durchgeführt werden
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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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