bluuebunny/crossref_metadata_2025 huggingface dataset:
Red-figured vases at the Benaki Museum: reassembling fragmenta disjecta
Authors: Sabetai Victoria
Published: August 2018

Στο άρθρο αυτό παρουσιάζονται θραύσματα ερυθρόμορφων αγγείων του Μουσείου Μπενάκη, τα οποία αναγνωρίστηκε ότι συνανήκουν —τα μεν με λουτροφόρο στην Αρχαιολογική Συλλογή του Μονάχου (Staatliche Antikensammlungen), τα δε με θραύσμα υδρίας στο Εθνικό Αρχαιολογικό Μουσείο στην Αθήνα— και συζητούνται θέματα σχετικά με την εικονογραφία τους και τους αγγειογράφους που τα διακόσμησαν. Συγκεκριμένα, μέρος του λαιμού, οι οριζόντιες λαβές και το πόδι λουτροφόρου-υδρίας του Ζωγράφου της Νεαπόλεως συνανήκουν με το υπόλοιπο σώμα του αγγείου, σήμερα στο Μόναχο- επιπλέον, το μεγαλύτερο μέρος υδρίας "με τον τρόπο" του Ζωγράφου του Λουτρού συνενώνεται με θραύσμα, σήμερα στο Εθνικό Μουσείο, το οποίο διασώζει περίπου τα 2/3 της διακοσμημένης επιφάνειας του αγγείου. Το σχήμα της λουτροφόρου-υδρίας σχετίζεται κυρίως με το λουτρό της μελλόνυμφης κόρης το οποίο σημειοθετεί τον βασικότερο σταθμό στη ζωή της Αθηναίας αστής, δηλαδή τον γάμο, και συνήθως διακοσμείται με σκηνές από τον νυφιάτικο στολισμό της' ωστόσο, το αγγείο των Μουσείων Μπενάκη-Μονάχου απεικονίζει αντί αυτού το συζυγικό ζεύγος στο εμβληματικό της ένωσης τους μοτίβο "χείρ επί καρπώ", θέμα το οποίο ουνήθως απαντά σε λουτροφόρους-αμφορείς. Πρόκειται για ένα από τα καλύτερα σωζόμενα έργα του Ζωγράφου της Νεαπόλεως (440-430 π.Χ.). Η υδρία του εργαστηρίου του Ζωγράφου του Λουτρού φέρει εξίσου ασυνήθιστο για το σχήμα αυτό εικονογραφικό θέμα. Η "επίσκεψη στον τάφο" δανείζεται εικονογραφικά στοιχεία από το θεματολόγιο των λευκών ληκύθων, και προσδίδει στην υδρία εμφανή ταφικό χαρακτήρα, ενώ μαρτυρεί αλληλεπίδραση ανάμεσα στις δύο αυτές κατηγορίες σχημάτων. Η στυλιστική και εικονογραφική ανάλυση επιβεβαιώνουν την κατάταξη της υδρίας στην κατηγορία "με τον τρόπο" του Ζωγράφου του Λουτρού (περ. 430-420 π.Χ.). Και τα δύο αγγεία θα πρέπει να προέρχονται από τάφο, μάλλον γυναικείο.
Zur Überlieferung eines bärtigen griechischen Porträts
Authors: Voutiras Emmanuel
Published: August 2018

Το Μουσείο Μπενάκη απέκτησε πρόσφατα με δωρεά ένα μαρμάρινο κεφάλι που προσφέρει νέα και χρήσιμα στοιχεία για τη μελέτη του αρχαίου ελληνικού πορτραίτου. Ο εικονιζόμενος είναι ένας ηλικιωμένος άνδρας με πλούσια κόμη, της οποίας οι κυματιστοί βόστρυχοι περιβάλλουν το μέτωπο και τους κροτάφους, και εντυπωσιακά μακριά γενειάδα. Η κατεργασία της κάτω επιφάνειας δείχνει ότι το κεφάλι ήταν πιθανότατα ένθετο σε ερμαϊκή στήλη. Η διατήρηση δεν είναι καλή, καθώς το έργο εκτός από έντονη διάβρωση παρουσιάζει και ίχνη καταστροφής από φωτιά ιδιαίτερα στη δεξιά πλευρά, όπου το μάρμαρο έχει απολεπισθεί. Το γλυπτό μπορεί να χρονολογηθεί περί τα μέσα του 2ου αι. μ.Χ. και είναι πιθανότατα έργο Αθηναίου γλύπτη, κάτι για το οποίο συνηγορεί και το υλικό του που είναι πεντελικό μάρμαρο. Η σττ\\ιασία του νέου κεφαλιού οφείλεται στο γεγονός ότι παραδίδει έναν τύπο γνωστό από δύο άλλα αντίγραφα στο Μουσείο του Βατικανού και στο J. Paul Getty Museum στο Malibu (Καλιφόρνια) που μελέτησε το 1987 ο J. Raeder. Τα δύο αυτά αντίγραφα έχουν ξαναδουλευτεί (το πρώτο στα νεότερα χρόνια, ενώ το δεύτερο ήδη στην όψιμη αρχαιότητα) και έτσι το αντίγραφο του Μουσείου Μπενάκη είναι το πιο αξιόπιστο στήριγμα μας για την αναπαράσταση του πρωτοτύπου. Η σύγκριση του με κεφάλια ηλικιωμένων ανδρών από αττικά επιτύμβια ανάγλυφα του 4ου αι. π.Χ. μας επιτρέπει να προτείνουμε για το πρωτότυπο μια χρονολόγηση περί το 330 π.Χ. Η πλούσια κόμη και η μακριά γενειάδα είναι χαρακτηριστικά που στην τέχνη του δεύτερου μισού του 4ου αιώνα δεν συνδέονται απαραίτητα με την ιδιότητα του φιλοσόφου ή του πνευματικού ανθρώπου, όπως συμβαίνει σε μεταγενέστερες περιόδους. Ωστόσο, από το γεγονός ότι το αντίγραφο του Μουσείου Μπενάκη είναι αττικό έργο μπορούμε να συμπεράνουμε ότι το πρωτότυπο ήταν στημένο στην Αθήνα. Το συμπέρασμα αυτό ενσχύεται και από την προέλευση του αντιγράφου του Βατικανού από τη βίλα του Αδριανού στο Tivoli: είναι γνωστή η στενή σχέση του αυτοκράτορα αυτού με την Αθήνα. Είναι συνεπώς εύλογο να δεχθούμε ότι ο εικονιζόμενος ήταν ένας διάσημος Αθηναίος, ίσως μάλιστα όχι του 4ου αι. π.Χ., αλλά του απώτερου παρελθόντος. Δεν αποκλείεται να πρόκειται για τον γνωστό νομοθέτη Σόλωνα, του οποίου γνωρίζουμε ότι οι Αθηναίοι είχαν στήσει ανδριάντα στην Αγορά της πόλης μπροστά στην Ποικίλη Στοά. Πρέπει πάντως να τονίσουμε ότι η ταύτιση αυτή είναι προς το παρόν εντελώς υποθετική.
Μια αναθηματική στήλη στην Εννοδία Κορουτάρρα. Συμβολή στη μελέτη της θεσσαλικής θεάς Εννοδίας ή Φεραίας
Authors: Χρυσοστόμου Παύλος
Published: August 2018

Δεν διατίθεται περίληψη.
Εικόνα Παναγίας Βρεφοκρατονσας με προτομές αγίων. Τεχνική εξέταση
Authors: Μιλάνου Καλυψώ
Published: August 2018

Δεν διατίθεται περίληψη.
Actual problems of history of political and legal doctrines
Authors: Желдыбина Татьяна , Zheldybina Tatiana
Published: August 2018

The manual is devoted to the main schools of law - natural-legal, positivistic, historical and «revived» natural law. This manual is written taking into account the development and achievements of modern political and legal thought. The publication is provided with a list of questions, a list of additional literature, the topics of abstracts and the tests necessary to prepare for the seminar classes, as well as to the exam. In addition, the allowance can be used to pass the examinations of the candidate minimum, in the preparation of candidate and doctoral dissertations of legal and philosophical profiles.
Adapting the Bridges stroke self-management programme for use in Australia
Authors: Singer Barbara , Jones Fiona , Lennon Sheila
Published: August 2018

Background/Aims:

This study explored the applicability of the UK Bridges stroke self-management programme for use in an Australian health care context, and specifically, the need for any modification to the workbook tool.

Methods:

Data were collected via survey from Australian stroke professionals who had attended a 2-day Bridges training workshop and from focus groups with community-based stroke survivors across three different states.

Findings:

A total of 18 out of 30 workshop attendees (60%) completed the electronic survey. Most (94%) agreed that the training had advanced their practice with a stronger focus on self-management principles and that they would recommend the training to colleagues. The majority (71%) had incorporated some Bridges stroke self-management programme principles or strategies into their practice; although 81% reported a range of barriers to doing so. A total of 26 stroke survivors attended focus groups. The workbook was considered to be a useful tool to support self-management. Suggestions for change included the addition of some culturally contextualised patient stories and locally relevant stroke support resources.

Conclusions:

Stroke survivors and health professionals recognised the need for structured training, such as the Bridges stroke self-management programme, to develop self-management skills and knowledge post stroke. The Bridges stroke self-management programme workbook would be able to be used in Australia with minor modification.
Using Machine Learning to Aid the Interpretation of Urine Steroid Profiles
Authors: Wilkes Edmund H , Rumsby Gill , Woodward Gary M
Published: August 2018

BACKGROUND

Urine steroid profiles are used in clinical practice for the diagnosis and monitoring of disorders of steroidogenesis and adrenal pathologies. Machine learning (ML) algorithms are powerful computational tools used extensively for the recognition of patterns in large data sets. Here, we investigated the utility of various ML algorithms for the automated biochemical interpretation of urine steroid profiles to support current clinical practices.

METHODS

Data from 4619 urine steroid profiles processed between June 2012 and October 2016 were retrospectively collected. Of these, 1314 profiles were used to train and test various ML classifiers' abilities to differentiate between “No significant abnormality” and “?Abnormal” profiles. Further classifiers were trained and tested for their ability to predict the specific biochemical interpretation of the profiles.

RESULTS

The best performing binary classifier could predict the interpretation of No significant abnormality and ?Abnormal profiles with a mean area under the ROC curve of 0.955 (95% CI, 0.949–0.961). In addition, the best performing multiclass classifier could predict the individual abnormal profile interpretation with a mean balanced accuracy of 0.873 (0.865–0.880).

CONCLUSIONS

Here we have described the application of ML algorithms to the automated interpretation of urine steroid profiles. This provides a proof-of-concept application of ML algorithms to complex clinical laboratory data that has the potential to improve laboratory efficiency in a setting of limited staff resources.
Wardrobe Hack and Uncatwalk: Design interventions to encourage more fulfilling relationships with our clothing
Authors: Whitty Jennifer
Published: August 2018

Fashion is now fast and disposable. The current product–service system for fashion ensures that unwanted items are quickly abandoned in favour of the next shiny new thing. Leaving little time or motivation for consumers to engage, appreciate and articulate oneself through fashion. This activity is destroying the value of clothing both figuratively and literally and is having a huge negative impact on people and planet. This research asks can designers create systems and services that improve and extend the use phase of the person–product relationship and ensure ongoing contentment and fulfilment for the user? The practice-led research projects, Wardrobe Hack and Uncatwalk, encourage everyday user autonomy of clothing from the site of their fashion experience, their own wardrobe. The aim of these projects is to enable the development of alternate ecologies of practice or behaviour for fashion users in the use phase of a garment’s life in order to encourage more fulfilling relationships with clothing to address the environmental impact of overconsumption. This practice-based fashion research project and its associated design intervention occur during the ‘use’ phase of clothing. This is a means of encouraging more sustainable consumer activity through longer-term consideration and connectivity with existing clothing. This is an under-researched stage of the conventional person-product-service relationship, and can be a means of encouraging more sustainable consumer activity.. This is achieved by exploring the viability and potential of a Wardrobe Hack service or courses of actions that enable ‘wearers’ to share their everyday practices, build competencies and create a space for sustainable fashion product–services and practices to emerge. This research builds on Fletcher’s work in the Local Wisdom (2013) project, exploring the emerging field of enriching the fashion user experience in the post-production and post-retail environment. It seeks to create a better integration of clothing and material culture in our lives by proposing alternative roles for designers and consumer to design services for longevity of use practices. These models demonstrate how digital and social media can provide a vehicle for fashion designers to facilitate participatory experiences amongst fashion users. Future research requires a longitudinal study to evaluate the impact from the consumer’s perspective.
Case study: Swat Valley Guild peace-building initiative and Artisan enterprise for community empowerment and sustainable development
Authors: Deo Zulfiqar
Published: August 2018

The Swat Valley Guild (SVG) is engaging local artisans in the Swat Valley region of Northern Pakistan with the global fashion community. The local artisan heritage is centuries old and is under threat from conflict, climate change and industrialization. The SVG is organizing a demand-centric approach, which allows the artisans to engage with the global community and ensures it solves some key challenges of the fashion industry as well, focusing on waste, sustainability and people development. There is a unique form of embroidery (Panjara) indigenous to the Swat Valley being preserved by this project. Artisans from the Guild are changing the face of the fashion industry. The local artisan ecosystems allow for flexible bespoke production, enabling the fashion industry to solve some of its key challenges. These being waste, pollution and people insensitivity. Fashion as a discipline helps the individual to find him/herself through self-expression. It supports new and original form, which in time finds its function. When the founders of the SVG first decided to set up the Guild in 2016 in the Swat Valley Region, Northern Pakistan, they had to decide how to position this high social impact business in the open market to support the fashion industry with its key challenges. They felt the openness, innovativeness and the global presence of the fashion industry would be the best place to start.
Perceived class mobility and veiled stratification of contemporary fashion: A comparison with proletariat and bourgeois class structure in the nineteenth century
Authors: Cha Hana
Published: August 2018

It is important to bear in mind as to what extent this distinction exists, or whether we can confidently say it does not exist at all. As a matter of fact, we find that with higher income, individuals spend more of their capital income on clothing. There is still an intangible class division and stratification on the street, even though it is representative. Therefore, it is important to examine the historical role played by clothing as a symbol or a form of self-expression within the social hierarchy, and to identify its antithetic aspects during post-industrial Britain and France, and from the twentieth century to present day. In this article, the principal plan is to outline the contrast between the past and the present examining two antithetic aspects of clothing within the social structure for those periods; the first era is post-Industrial Revolution in Britain and France. The intention is to explain the intensive opposition between the bourgeois, which represents the upper class, and the proletariat, which is the lower class in the mid-eighteenth century to the end of nineteenth century. The second period is the twentieth century to the present and democracy and equilibrium in fashion will be examined. Finally, class mobility through ether existing hierarchy or reduced representation (i.e. ambivalence to Democracy in fashion) as the main debate of multifaceted stratification in fashion will be elaborated and the class boundaries are increasingly blurred, yet whether we accept it or not, class distinctions still exist.
Guardian: Made in Cambodia: Experimental textile design responding to Cambodian factory conditions, unionism and the phenomenon of Neak Ta possession
Authors: Adams Cynden , Keulemans Guy
Published: August 2018

Guardian: Made in Cambodia is an ethical textiles project undertaken in response to the low-income and hazardous working conditions of garment factory workers in Cambodia. The project critically designs a range of garments that acknowledge and raise awareness of cultural manifestations of unionism in Cambodia, specifically the Neak Ta phenomenon. The garments are speculatively imagined as capable of ethical production by a small community of workers from Cambodia’s garment factories in order to (capacitate) provide a mode of production and sustainable source of income alternative to industrial factory employment. The Neak Ta phenomenon refers to mass fainting associated with land guardian spirits unique to Cambodian Animist belief. The phenomenon is regarded as a culturally appropriate form of rebellion occurring in a country where unionism is discouraged and labour protests can become violent. Guardian: Made in Cambodia applies a methodology of experimental material and processes research through textile-focused studio practice, as a means to better understand the conditions of Cambodian garment workers and the Neak Ta phenomenon. This process corresponds to a critical design approach that engages with the topic interrogatively through experimental making, in order to challenge paradigms of design and production. The resulting textile and apparel products visualize the repetitive piecework of garment factory work and the disruption caused to it by the Neak Ta phenomenon. Open and closed seams, darts and hems recall the repetitive qualities of piecework labour, disrupted by dark-toned natural dyeing techniques intended to capture and convey expressions of fainting and possession.
Digital tools to support motivation of music students for instrumental practice
Authors: Wan Lydia A. , Gregory Sue
Published: August 2018

Instrumental practice is fundamental to the development of musical expertise, and motivation plays a vital role. Music practice can be challenging for many children as it demands significant effort, resilience and perseverance. Motivation is also essential in applying appropriate strategies necessary for effective practice and musical attainment. Founded on multiple motivational theories, motivational design models aim to provide a comprehensive framework to address motivational issues in learning environments. This case study analysed digital tools to determine their potential to facilitate motivational strategies to increase children’s engagement and motivation for music practice. Five such categories of tools were identified: practice logs, note feedback tools, portfolios, music stand software and accompaniment tools. Using the attention, relevance, confidence and satisfaction (ARCS) motivational framework, this research found that most tools potentially facilitated motivational strategies to a restricted extent and suggests that a limited range of digital tools may currently be available to fully support children’s motivation for instrumental practice.
Overcoming barriers: Towards a framework for continuing professional development to foster teaching sound-based music
Authors: Wolf Motje , Younie Sarah
Published: August 2018

This article presents a theoretical discussion emerging from a pilot study within the EARS 2 teacher’s pack study, in which the suitability of the teacher’s packs that accompany an online sound-based music resource (EARS 2, www.ears2.dmu.ac.uk) was tested. The study investigated if the teacher’s packs could bridge the gap between the teacher’s current knowledge and the knowledge that was provided in the resources on sound-based music given to the teacher. During the study a minor technical glitch appeared, which caused the teacher to discontinue with the teaching trial. This was seen as a critical incident and was analysed using the critical incident technique. During the analysis, three different theoretical concepts were applied to the critical incident: cognitive prototype theory, the threshold concept theory and the concept of metacognitive knowledge. The article concludes by suggesting a theoretical framework for teacher Continuing Professional Development (CPD) in sound-based music. The results presented in this article cannot be generalized due to the sample size; however, this is currently followed up in further research.
Minimal cost service rate in priority queuing models for emergency cases in hospitals
Authors: S. Udoh Nse , A. Etukudo Idorenyin
Published: August 2018

Performance measures and waiting time cost for higher priority patients with severe cases over lower priority patients with stable cases using preemptive priority queuing model were obtained. Also, a total expected waiting time cost per unit time for service and the expected service cost per unit time for priority queuing models: M/M/2: âˆž/NPP and M/M/2: âˆž/PP were respectively formulated and optimized to obtain optimum cost service rate that minimizes the total cost. The results were applied to obtain optimum service rate that minimizes the total cost of providing and waiting for service at the emergency consulting unit of hospital.Â Â Â Â
3D Technology in Collaborative Heritage Preservation
Authors: Csoba DeHass Medeia Krisztina , Taitt Alexandra
Published: August 2018

Digital repatriation is one aspect of heritage preservation work that has been increasingly gaining popularity due to its effectiveness in assisting Indigenous communities in connecting with museum collections located at various institutions around the world. It is not simply an alternative for physical repatriation; rather, the two can be used in conjunction, particularly with the incorporation of 3D technology. While digital repatriation can provide new opportunities, it is also a contested concept (Boast and Enote 2013) that is still in the process of shaping future collaborative practices while being shaped by ongoing projects and their outcomes. In this paper, we explore how this technology, structure from motion (SFM) 3D modeling and scanning, provides innovative methods that are especially well suited for successfully contributing to a wide array of heritage preservation objectives. Three-dimensional technology is effective in providing alternative ways to connect with collection pieces and providing origin communities access to museum collections. It can alleviate concerns of chemical exposure from contamination, concerns for the fragility of items, the expense of insurance and transportation, or the need to remove pieces from origin communities. As artifacts transform in the repatriation process by gaining new life and meaning when they enter the contemporary reality of the origin community, the use of 3D technology, as part of this collaboration, can assist Indigenous communities in fulfilling their own visions of heritage preservation.
Intimate Clips: Sealskin Sewing, Digital Archives and the Mittimatalik Arnait Miqsuqtuit Collective
Authors: Wachowich Nancy
Published: August 2018

This article reflects upon the interplay of digital, material, and social relations in the context of a small-scale digital archiving project currently being undertaken by a group of women ethnographers, videographers, and sealskin seamstresses in the Canadian Eastern High Arctic Inuit settlement of Mittimatalik (Pond Inlet). I illustrate the documentation work of our Mittimatalik Arnait Miqsuqtuit Collective, situating it in the new media landscapes that have developed in the Canadian Arctic, and draw on case studies to challenge claims that new communications technology has led to the breakdown of social and environmental relationships. Clips from our digitizing work in progress offer insight into the relational ecologies emergent the making of this archive: illustrating how the unique materiality of sealskin and digital archives, the politics of Inuit hunting, the sensibilities of family and friends, and the challenges of broadband connectivity in Arctic settlements shape this initiative. Technology also emerges here as a key agent, enabling new collaborative relationships, political voice, and forms of knowledge production, but also denying others.
Another India: Explorations and Expressions of Indigenous South Asia
Authors: Müller Katja
Published: August 2018

This work is an exhibition review considering Another India: Explorations and Expressions of Indigenous South Asia, a project of the Museum of Archaeology and Anthropology, University of Cambridge.
Digital Representation of Indigenous Peoples through Sharing, Collaboration, and Negotiation: An Introduction
Authors: Gish Hill Christina , DeHass Medeia Csoba
Published: August 2018

In the past decade, digital media have been increasingly employed in museums in a variety of ways. This practice capitalized on the new medium’s effectiveness in connecting a variety of stakeholders across multiple key issues. Projects representing Indigenous communities are not an exception to this trend. This special issue critically reflects on the politics of representation in the process of reframing culturally specific concepts in a digital environment. In addition to discussing potential benefits of digital media to working with Indigenous communities, papers in the special issue also carefully weigh the benefits and shortcomings virtual environments may bring to digital collaborations with Indigenous communities.
Genetic morphometry in Nigerian and South African Kalahari Red goat breeds
Authors: Sanni Muyideen Timothy , Okpeku Moses , Onasanya Gbolabo Olaitan , Adeleke Matthew Adekunle , Wheto Mathew , Adenaike Adeyemi Sunday , Oluwatosin Bamidele Omonuwa , Adebambo Oluwafunmilayo Ayoka , Ikeobi Christian Obiora Ndubuisi
Published: August 2018

Genetic improvement of goat breeds in growth and other traits (e.g. milk production) is limited by the demographics of the goat herds, extensive production system and the seemingly long-term nature of improvement through traditional genetics and breeding methods. We studied the genetic morphometry in Nigerian goats and South African Kalahari Red goat breeds. A total of 192 goats belonging to three Nigerian breeds (Red Sokoto (RS), Sahel (SH) and West African Dwarf (WAD)) and one South African Kalahari Red (KR) goat breed were analysed. Animals were classified into four age groups: A group – less than 1 year, B group – between 1 and 2 years, C group – between 2 and 3 years and C group – older than 3 years based on dentition. Analysis of variance, correlation matrix, regression and discriminant analyses were used to evaluate morphological variability. Results revealed that the effect of breed on the measured morphometric traits was significant (P < 0.05). The best prediction equation for body weight (BW) with R2 = 0.84 was obtained when body length (BL), withers height (WH) and chest depth (CD) were included in the model for KR goat. Growth traits were positively correlated with each other with the highest correlation coefficients found between BL and BW (r = 0.877, P < 0.01), WH and BW (r = 0.541, P < 0.01), WH and BW (0.661, P < 0.01) and CD and BW (0.738, P < 0.01) in KR, RS, SH and WAD goats, respectively, which are important for a conscious selection and breeding programme for desired traits. Stepwise discriminant procedure showed that WH, CD and BL were the most discriminating variables to separate KR, RS, SH and WAD goats. In accessing morphological diversity, efforts should be made to include phenotypic variables of at least ≥ 3 in order to minimize ambiguity in classification. Based on the pair-wise distances from the Discriminant function, the study provided informed decision, reference information on goat breeding and conservation strategy.
Ein Ansatz zur vernetzten Steuerung ereignisdiskreter Systeme
Authors: Zgorzelski Markus , Lunze Jan
Published: August 2018

Unter vernetzten ereignisdiskreten Systemen werden in diesem Beitrag geregelte Teilsysteme verstanden, die über ein Kommunikationsnetz situationsabhängig miteinander in Verbindung treten. Die Teilsysteme arbeiten weitgehend autonom und können bei Bedarf ihre Aktivitäten koordinieren, so dass sie flexibel auf äußere Anforderungen reagieren. Dieses Verhalten wird an einem Roboterbeispiel illustriert. Für die Formalisierung der autonomen und der kooperativen Arbeitsweise werden die geregelten Teilsysteme durch Eingang/Ausgangs-Automaten beschrieben. Um den kooperativen Modus ohne einen Koordinator zu realisieren, werden die Teilsysteme um Netzwerkeinheiten erweitert, die situationsabhängig eine Kooperation erkennen und diese herbeiführen. Ein Beispiel zeigt, wie auf diese Weise aus zwei autonomen Teilsystemen ein flexibles Fertigungssystem entstehen kann.
Intervallmethoden für Identifikation, Beobachter- und Reglersynthese von Finite-Volumen-Modellen thermischer Prozesse
Authors: Rauh Andreas , Kersten Julia , Aschemann Harald
Published: August 2018

Sowohl die Offline-Parameteridentifikation als auch die echtzeitfähige Online-Zustandsschätzung sind im Rahmen regelungstechnischer Anwendungen weit verbreitete Fragestellungen. Die Lösung dieser Fragestellungen ist insbesondere dann anspruchsvoll, wenn gemessene Größen und Parameter nicht mit absoluter Genauigkeit bekannt sind. In solchen Fällen lassen sich intervallbasierte Repräsentationen nutzen, um einerseits gesicherte Wertebereichsschranken unsicherer Parameter zu beschreiben und andererseits garantierte Einschlüsse aller möglichen Zustandstrajektorien zu berechnen. In diesem Artikel wird hierauf aufbauend ein intervallbasierter Ansatz zur verifizierten Parameteridentifikation und Beobachtersynthese vorgestellt. Dieser Ansatz wird darüber hinaus anhand eines Finite-Volumen-Modells eines örtlich verteilten Wärmeleitungsprozesses validiert. Für die effiziente Implementierung des Schätzverfahrens wird dabei die strukturelle Systemeigenschaft der Kooperativität ausgenutzt. Diese erlaubt es, zwei voneinander unabhängige Schrankensysteme zu definieren, aus welchen sich garantierte Unter- und Obergrenzen aller Zustände des unsicherheitsbehafteten Systemmodells berechnen lassen.
Who Cares What We Speak: A Case Study at Kgoši Mampuru Correctional Facility
Authors: Mabule Dorah Riah
Published: August 2018

The aim of this article is to explore the dynamic of language choice and language use as well as to examine the effect of language policy on language attitudes in the Department of Correctional Services (DCS) with special reference to Pretoria Central Prison, now called Kgoši Mampuru Correctional facility where there is some resistance to the use of English as the only official language of business.

A case study was conducted at this facility to find out the language attitudes of the participants towards English as the only official language of business. A questionnaire was used to evoke the participants’ attitudes and beliefs regarding the importance of the use of other official languages (indigenous languages which, like English, also have official status) in their daily lives. A total of 60 correctional services staff and 280 offenders took part in this research study. Interviews and observations were mainly carried out at the research site to triangulate the data. Only the findings from the 280 offenders will be reported in this article.

The findings of this research study show that the participants were keen to use their languages of choice and favoured the language functions of their indigenous languages. The findings suggest that the prevailing language attitudes were in contrast with the aims of language policy at DCS thus making the effect of language planning not to be realized.
Devolved Ethnicity in the Kenya: Social, Economic and Political Perspective
Authors: Nyaura Jasper Edward
Published: August 2018

This paper examines the ethnicity as an issue prevailing upon the Kenyan society and its implication on the social, economic and political dimensions in Kenya. Devolved ethnicity has been seen to be on the arise since the county’s independence (1963) to date and therefore the distrust among communities is seen as an impediment to the socio-economic and political developments in Kenya. Moreover, the issues that arise include marginalization of minority ethnic communities towards accessing resources. Uneven distribution of national resources has led to underdevelopment of regions in Kenya thereby bring about regional imbalance in terms of distribution of national resources, which has negatively affected socio-economic development of the country. Negative ethnicity brings about marginalization, distrust and heightens ethnic tensions and this eventually leads to conflict, for example, the 1992, 1997 and the 2007/2008 post-election violence over the sharing and allocation of power and national resources. This paper examines ways in which ethnic problems in Kenya have been attributed to the social, economic and political perspectives and therefore provides the solution/medicine towards negative ethnicity.
Calibration of the Ductile Failure Criterion for Nickel-Based Superalloys taking into Account the Localization of the Strain
Authors: Madejski Bartosz , Socha Grzegorz
Published: August 2018

Static tension test allows characterization of material strength properties. This simple test provides input data for numerical calculation of structural components made of the tested alloy. Elastic, plastic and failure behavior of the structural component in question is simulated, using, for example, the FEM package, based on parameters obtained as the result of tensile testing. When using the results of the tensile test for modeling the material failure it is important to estimate correctly plastic strain corresponding to failure. It is common practice to use elongation of the specimen gage part for the calculation of failure strain. On the other side, the most popular ductile failure criterion used by engineers performing numerical simulation of the material’s behavior relies on the equivalent plastic strain as the criterial quantity. Those two parameters can differ significantly. In order to calculate the equivalent plastic strain correctly, we have to remember about strain localization (necking) appearing during tensile tests and take into account the fact that during tensile testing we have three non-zero strain tensor components. Ignoring this fact, and using only elongation as the criterial quantity can lead to enormous simulation error. This error is analyzed in this paper for nickel based superalloy tested at elevated temperatures.
Introduction of an Individual Aircraft Tracking Program for the Polish SU-22
Authors: Reymer Piotr , Kurdelski Marcin , Leski Andrzej , Leśniczak Andrzej , Dziendzikowski Michał
Published: August 2018

The Su-22 fighter-bomber is a military aircraft used in the Polish Air Force (PLAF) since the mid 1980’s. By decision of the Ministry of National Defence Republic of Poland, the assumed service life for this type of aircraft was prolonged up to 3200 flight hours based on the Full Scale Fatigue Test (FSFT) results. The FSFT was conducted using the real load profile defined during the Operational Load Monitoring Program (OLM) and the 3200 hour service life was also based on this load profile.

In order to assure safe operation of all the 18 Su-22 aircraft, the Individual Aircraft Tracking program was introduced. The program was based on the results of the FSFT as well as the analysis of the flight parameters recorded by the THETYS onboard flight recorder.

In this paper, the authors present the methodology, assumed fatigue hypothesis and preliminary results of the IAT program for the Polish Su-22.
The Effect of Anodizing Process Parameters on the Fatigue Life of 2024-T-351-Aluminium Alloy
Authors: Kudari Shashidhar K , Sharanaprabhu C. M.
Published: August 2018

The effect of an anticorrosive layer on the fatigue life of 2024-T-351-aluminium alloy has been studied in the present investigation. The fatigue tests were conducted on the aluminium alloy with and without anodizing to evaluate the fatigue life. The results indicate that the fatigue life of the anodized specimens is significantly shorter than that of untreated specimens. Further, experiments were conducted to evaluate the effect of the anodizing process parameters on the fatigue life of anodized specimens. These results show that the fatigue life of anodized aluminium alloy can be improved by controlling the anodizing process parameters such as process temperature, voltage, and time of immersion.
Experimental and Numerical Study of NACA and Conventional Riveting Procedure
Authors: Wronicz Wojciech , Kaniowski Jerzy , Malicki Maciej , Kucio Paweł , Klewicki Robert
Published: August 2018

Fatigue behaviour is one of the most important properties of modern airplanes and rivets influence it strongly. According to the literature, the NACA riveting offers a multiple increase in the fatigue life of joints.

The aim of this paper is to investigate the benefits offered by the NACA riveting procedure with respect to the residual stress and strain distribution after riveting as well as rivet hole expansion. Experimental and numerical approaches were adopted. The conventional riveting with both the universal and countersunk rivets was compared with the NACA riveting. The countersunk angle and depth in the case of the NACA riveting was modified somewhat relative to the values met in the literature. For these three cases, strain gauge measurements during riveting, hole expansion measurements and FE calculations were performed. The hole expansion measurement with the use of Computer Tomography(CT) was proposed.

Only the FE calculations unambiguously indicate better fatigue properties of the NACA riveting. The proposed method of hole expansion measurement requires further research to increase its accuracy.
Durational contrast in gemination and informativity
Authors: Sano Shin-Ichiro
Published: August 2018

Recent studies in Message Oriented Phonology (MOP) have provided increasing evidence that informativity plays a non-trivial role in linguistic behavior. This paper provides a case study of MOP focusing on the durational contrast of singleton and geminate consonants in spoken Japanese. In modern Japanese, short consonants (singletons) and long consonants (geminates) are lexically contrastive, and the durational properties of these consonants are affected by a variety of factors. This provides a useful test of the assumptions of MOP. Based on the assumption that the higher the informativity, the more robustly the contrast is phonetically implemented, this study examines the hypothesis that the durations of singletons and geminates increase or decrease according to the informativity of their durational contrast. The study confirms that (i) the distribution of singletons and geminates is affected by the manner of articulation and positional differences (morpheme-initial, medial, and final); (ii) the distributional differences follow from the informativity of contrasts as represented by Shannon’s entropy; and (iii) the durational contrast is enhanced by the presence or absence of a minimal pair.
A note on the three-way generalization of the Jordan canonical form
Authors: Cui Lu-Bin , Li Ming-Hui
Published: August 2018

The limit point 𝓧 of an approximating rank-R sequence of a tensor
Ƶ
can be obtained by fitting a decomposition (S, T, U) ⋅ 𝓖 to
Ƶ
. The decomposition of the limit point 𝓧 = (S, T, U) ⋅ 𝓖 with 𝓖 = blockdiag(𝓖1, … , 𝓖
m
) can be seen as a three order generalization of the real Jordan canonical form. The main aim of this paper is to study under what conditions we can turn 𝓖
j
into canonical form if some of the upper triangular entries of the last three slices of 𝓖
j
are zeros. In addition, we show how to turn 𝓖
j
into canonical form under these conditions.
Magnetohydrodynamic(MHD) Boundary Layer Flow of Eyring-Powell Nanofluid Past Stretching Cylinder With Cattaneo-Christov Heat Flux Model
Authors: Ibrahim Wubshet , Hindebu Bullo
Published: August 2018

This study analyzed the MHD boundary layer flow of Eyring-Powell nanofluid past stretching cylinder with Cattaneo-Christov heat flux model. The governing non-linear partial differential equations corresponding to the momentum, energy and concentration have been formulated and transformed into a set of non-linear ordinary differential equations by using similarity transformations. Then the resulting non-linear high order ordinary differential equations of momentum, energy and concentration, subjected to boundary conditions were solved numerically by utilizing the second-order accurate implicit finite difference method known as Keller-Box which is programmed in the MATLABR2017b software. The results indicated that the velocity profile increases as the Eyring-Powell fluid parameterMand the curvature parameterγincrease but it decreases as the magnetic parameterHaincreases. Both the temperature and the concentration profiles have revealed an increment pattern for large values of the magnetic parameterHaand the thermophoresis parameterNtbut a decrement manner with increasing values of the Eyring-Powell fluid parameterM. The Brownian motion parameterNbhas shown an opposite influence on the temperature and the concentration profiles. The results also depicted that the local skin friction coefficient increases with increasing in Eyring-Powell fluid parameterM, magnetic parameterHa. Besides, it is found that both the local Nusselt numberNuxand the local Sherwood numberShxare higher for large vales of Eyring-Powell fluid parameterMand curvature parameterγ. Furthermore, the present results for the local skin friction coefficient, the local Nusselt number and the local Sherwood number are validated with the data of previously published literature for various limiting conditions where a very sound agreement has been attained.
On the connection coefficients and recurrence relations arising from expansions in series of modified generalized Laguerre polynomials: Applications on a semi-infinite domain
Authors: Doha E.H. , Youssri Y.H.
Published: August 2018

Herein, three important theorems were stated and proved. The first relates the modified generalized Laguerre expansion coefficients of the derivatives of a function in terms of its original expansion coefficients; and an explicit expression for the derivatives of modified generalized Laguerre polynomials of any degree and for any order as a linear combination of modified generalized Laguerre polynomials themselves is also deduced. The second theorem gives new modified generalized Laguerre coefficients of the moments of one single modified generalized Laguerre polynomials of any degree. Finally, the third theorem expresses explicitly the modified generalized Laguerre coefficients of the moments of a general-order derivative of an infinitely differentiable function in terms of its modified generalized Laguerre coefficients. Some spectral applications of these theorems for solving ordinary differential equations with varying coefficients and some specific applied differential problems, by reducing them to recurrence relations in their expansion coefficients of the solution are considered.
Oral Contraceptives and Cardiovascular Disease: Emerging Evidence on Potential Associations with Angina, Myocardial Infarction and Stroke
Authors: Victory Rahi , Diamond Michael P
Published: August 2018

Associations between combined estrogen/progestin oral contraceptives (OCs) and cardiovascular disease (CVD) have long been the focus of considerable concern. Initial, epidemiologic studies demonstrated increased risks of potential complications including deep venous thrombosis/pulmonary embolism, myocardial infarction and stroke. While the studies regarding venous thromboembolism consistently demonstrate at least some degree of risk associated with OC use, recent studies of both current and past OC users indicate that the association with arterial disease is dynamic, changing rapidly as OC formulations and OC-user populations change. As physicians increase selection, screening and monitoring of OC users, a healthier OC-user population is developing. Thus, many newer studies are demonstrating rates of angina and myocardial infarction that are either lower or the same as that of non-users, unless pre-existing risk factors are present leading to potential increases in risk of CVD. The evidence with regards to strokes is more complicated and controversial. While further study is necessary, current evidence suggests that OC use provides significant contraceptive benefits with minimal potential adverse effects in healthy users. The potential for CVD reduction in selected OC users merits the highest priority for further investigation.
Modern Antiplatelet Therapy: When Is Clopidogrel the Right Choice?
Authors: Divanji Punag , Shunk Kendrick
Published: August 2018

Platelet inhibition with aspirin is the cornerstone of medical therapy for coronary artery disease. In the era of percutaneous coronary intervention with drug-eluting stents, dual anti-platelet therapy with the addition of clopidogrel (Plavix©, Bristol-Myers Squibb, New York, NY) became the mainstay of therapy. However, with the advent of newer oral antiplatelet medications, including prasugrel (Effient©, Eli Lilly, Indianapolis, Indiana) and ticagrelor (Brilinta©, Astra-Zeneca, Cambridge, United Kingdom), choosing the appropriate platelet inhibitor has become more nuanced. The optimal regimen differs based on patient characteristics, clinical situation, and the condition being treated, with differing risk and safety profiles for these medications. This review explores the appropriate use of antiplatelet therapy for stable ischemic heart disease, acute coronary syndrome, stroke, and peripheral vascular disease. Furthermore, we evaluate the data behind the use of antiplatelet therapy in patients on oral anticoagulation. By understanding the biochemistry of platelet aggregation, the pharmacology of platelet inhibitors, and the extensive clinical trial data that informs current guideline recommendations we aim to better understand the role of clopidogrel in patients with cardiovascular disease.
Records of the Ornate Hawk-eagle, Spizaetus ornatus (Daudin, 1800) (Accipitridae), from the state of São Paulo, southeastern Brazil
Authors: Cavarzere Vagner , Muniz Gustavo , Antonio Silva Paulo , Felipe Teixeira Wilton
Published: August 2018

We review the distribution of the Ornate Hawk-eagle, Spizaetus ornatus (Daudin, 1800), in the state of São Paulo, reporting localities with records of the species. Most locations where the species has been historically documented have no recent records, especially to the west of the large remnants of forest in the coastal mountain ranges. Most current records come from Serra de Paranapiacaba, southwestern São Paulo, whereas no records exist within the Cerrado domain. Unlike the neighboring state of Minas Gerais, where it is found in fragmented landscapes, in São Paulo, the species occurs exclusively within protected areas in large blocks of Atlantic Forest.
THE EFFECTS OF AN ARTIFICIAL COMMERCIAL FEED SUPPLEMENTATION ON LARVAL REARING AND CRABLET PRODUCTION OF MUD CRAB Scylla tranquebarica
Authors: Gunarto Gunarto , Syafaat Muhammad Nur , Herlinah Herlinah , Sulaeman Sulaeman , Muliani Muliani
Published: August 2018

The effects of an artificial commercial feed supplementation on larval rearing and crablet production of mud crab Scylla tranquebarica. In mass production of mud crab seeds, only rotifer and Artemia nauplii are usually fed to mud crab larvae rearing until the larvae develop to crablet stage. The supplementation of artificial commercial feed from zoea-3 stage is expected to supply an essential nutrient required for an optimum larval development. The research was aimed to determine the optimum dosage of commercial feed supplementation for a successful larval rearing to produce crablet in hatchery. Newly hatched larvae of mud crab were stocked at a density of 100 ind./L. The larvae were fed with rotifer and Artemia nauplii. Microbound artificial commercial feed sized <100 microns (protein 52%, fat 14,5%, fiber 3% and water content 10%) was supplemented to the larvae from zoea-3 to megalopa stage at different dosages namely: a). 0.5 mg/L/2 days; b). 0.75 mg/L/2 days; c). 1.0 mg/L/2 days; d). 1.25 mg/L/2 days. Larval population, larval development indices (LDI), megalopa occurrence index (MOI) and crablet production were observed and measured. Water quality (ammonium, nitrite, Total Organic Matter (TOM), and total Vibrio sp. count were also monitored. The LDI, MOI, and crablet production from each treatment were compared and tested using one way-ANOVA. The results showed that the survival rate of larvae at zoea-5 ranged between 29-33%. The LDI was not significantly different (P>0.05) among treatments. However, the MOI of treatment A and B at day 21 ph was significantly higher (P<0.05) compared with treatment C and D. In addition, the crablet production in treatment B, C and D were significantly higher (P<0.05) compared with treatment A. It was concluded that the supplementation of artificial commercial feed in larval rearing of S. tranquebarica could be applied at the dosage range of 0.75-1.25 mg/L/2-days from zoea-3 until crablet (C-7) stage.