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Case study: EMP
(2018)
The purpose of this research paper is to investigate the business model of the retailer EMP. The in-depth literature review develops the relevance of merchandising for the rock and heavy metal scene and the relevance of EMP within that market. Literature about existing approaches of multi-channelling has been reviewed. Based on this theoretical framework, a case study of EMP has been drafted. Findings are discussed, focusing on the performance of EMP as a multi-channel and lifestyle retailer and additionally provide valuable managerial implications for fashion retailers. Implications for further research address lifestyle retailers to contribute to the findings or validate them with different examples. The research is clearly limited by the amount of scholar literature concerning EMP in particular. Hence, magazines, journals and information provided by the company serve as reference. Even though EMP provided some information, gathering any information about how EMP manages multi channelling operationally was not possible.
This article aims to point out main changes of the music industry since the advent of the Internet and how the fashion industry can learn from it. Different factors are researched with a birds-eye perspective by conducting a literature review. The results are limited by the availability of sources and the implications are based on a theoretical foundation. For further research the conclusions drawn for the fashion industry have to be proven empirically. After reading the paper, the reader has rather an overview of the changed circumstances and how the music industry reacted than deep knowledge in each field. More specifically, this paper gives an overview of the changed circumstances due to digitalisation and how the music industry reacted within. As both the fashion and music industry have their similarities, they are limited in their comparability, since fashion products cannot be fully digitalized like a music record. The fact that the music industry had to reinvent itself rapidly to adopt new possibilities and chances results from the article. To make use of the sustainability trend and to build communities in order to include them in the creation process are the major suggestions for the fashion industry.
Die Digitalisierung von Arbeitswelt und Führung ist eine der aktuell zentralen Herausforderungen für Organisationen. Ein Resultat der Beschäftigung des AK Unternehmensführung mit diesem Thema war die Erkenntnis, dass eine holistische und integrative Perspektive auf das Thema erforderlich ist. Mit dem in diesem Beitrag vorgeschlagenen konfigurationstheoretischen Ansatz kann es künftig besser gelingen, die Zusammenhänge und Wechselwirkungen verschiedener Dimensionen und Elemente der digitalen Organisation und deren Auswirkungen auf Arbeit und Führung zu verstehen.
Vom 3D-Druck über Tumorzellen bis hin zur Energieversorgung - die erste Ausgabe des Forschungsmagazins re:search gibt einen Überblick über die Forschungsthemen der Hochschule Reutlingen. Ein Schwerpunkt der Ausgabe ist die Energiewende, an der die Mitglieder des Reutlinger Energiezentrums mit Hochdruck forschen. Über die Herausforderungen für Netzbetreiber und die Zukunft der Energiemärkte haben wir mit Klaus Saiger gesprochen, Geschäftsführer der Reutlinger FairNetz GmbH. Professor Alexander Sauer, Leiter des Instituts für Energieeffizienz in der Produktion an der Universität Stuttgart und Professor Stefan Tenbohlen, Leiter des Instituts für Energieübertragung und Hochspannungstechnik, haben mögliche Lösungswege für uns skizziert.
Fashion & music
(2018)
This book will broaden readers’ understanding of the links between the music and fashion industries. It highlights the challenges currently facing the fashion industry in terms of hyper-competition, definition of ever faster trends, changing consumer demands etc. In fact, the fashion industry is heavily influenced by the digital revolution in the music industry, which has changed the face of individual music consumption and social reference, and therefore, also has impacts on fashion consumption and social reference. This understanding is crucial in order to realign any fashion company’s strategies to the demands of modern fashion consumers. In terms of content, the book first discusses the social perspective of fashion and music. This includes an analysis of music as a key influencer of fashion trends, both theoretically and on the basis of a case study on grunge music. Then the role of music in the fashion business is addressed, and covers in-store music and the role of music in fashion communication. Following up, the role of fashion in the music business is analyzed. This includes the trend of co-design of fashion collections, music artists’ role of differentiation by style, and the market for music fashion merchandise articles (both theoretically and drawing on a case study). In closing, potential lessons learned from the music industry are developed for the fashion industry. This includes an analysis of the digital revolution and the advent of the crowdfunding idea (both theoretically and in a case study).
The purpose of this paper is to give an overview about the links between the fashion and music industry. It focuses on the idea that digitalization has broken the rules of the traditional music industry value chain. This touches both the production and the consumption side of music. This change finally also has an intense impact on the fashion industry, as the music industry has been big supplier of fashion trends itself. The absence of this supplier plus the changes within the fashion industry itself by the fast-fashion development are considered as a reason for more competition and therefore price pressure. An in-depth future research about the fashion and music system is therefore required to develop answers for the current situation. This article should be interpreted more as a personal viewpoint of the author to this topic rather than a research paper based on the usual methodological criteria.
Purpose of the present research paper is to examine the current state of research, define dimensions of research and reveal gaps in research on the topic of ‘Fashion and music’. To do so, the methodology of a scientific literature review was applied. The literature review revealed that music and its business mainly serve the fashion industry as influencer on trends, image building marketing tool, support of fashion processes and contributor to the development of innovative fashion products. Both industries provide identify-forming features, unify their mutual target groups in a certain lifestyle and thus enlarge their own target market. This results in increased brand awareness, image and credibility, emotionalized brand experience, differentiation and sophisticated brand identity. The present paper can serve as the basis for further research. It is limited by the time, depth and availability of data collection, the predominance of grey literature and its focus on the modern relationship of fashion and music.
Aim of this paper is to provide an understanding to which extent music and fashion interdepend and interact referring to the music and fashion trend development, focusing the period from 1950 till today. It further helps the reader to gain an insight if the technology provided influences the development and the access of music and fashion in future. The research for this paper required the use of secondary sources including library and online research. The goal was to gather information about the former and current development of music and fashion. These methods were the best alternatives of secondary sources as they provided trusted results thus enhancing the accuracy of the data being collected. But however they were also limited since mainly data for the fashion and music development of the noughties were limited. This is explainable by the key finding that the development of this time is not as distinct as the one of the former times, when a fashion trend came along with a new music genre or hit, which implies that fashion and music correlate to a certain extent, but characterized by a reactivation of the music and fashion trends of previous times without any new inventions.
This paper is purposed to examine the impact of grunge music on fashion and to explain how grunge music is reflected in grunge style. The research methodology applied is a case study on grunge music and grunge style. Key findings suggest that different elements of grunge music had a great impact on the evolution of grunge style: Mentality and philosophy of the movement, musical style and sound as well as lyrical concerns are incorporated by grunge style. Commercial exploitation of grunge partly led to its downfall. Moreover, the original spirit of the movement is not commonly shared by all sub-genres’ respective contemporary styles. Musicians had great impact on the evolution of grunge style and unintentional rose to style icons. The research is limited by the amount of academic literature concerning the connection between grunge music and grunge style. Therefore, journal entries and blogs are used as reference as well.
The purpose of this paper is to identify the role of in-store music in the fashion retail environment and to describe music as an atmospheric building tool in order to influence customer behaviour with emotions created by musical compositions. As offline retailer try to differentiate their stores through shopping experiences, atmospherics like visuals, scent and sound are appropriate tools to reinforce brand image and therefore customers’ willingness to enter, explore and purchase. Music can be a powerful primary element in creating or enhancing sensory experiences of shoppers and serves as a powerful connection to emotions. Focus of the literature review lies on the emotions which are triggered though different musical characteristics and then affect the customer behaviour. The paper offers a concisely presented review and highlights crucial aspects on what role in-store music has on customers’ perception of atmosphere, emotions and behaviour.
Music is omnipresent and an important factor for cultural and social development. Thus, the connection between music and fashion has rarely been contemplated yet. In particular, this research paper is concerned with the connection between music and fashion communication, with special interest to its emotional background in the context of neuromarketing. The research question of how music affects the perception of a fashion brand, when regarded as emotional stimulus in the context of neuromarketing, has been investigated by researching existing literature. Without attempting to explain neurological processes to their core, this paper tries to give an overview of how music generates emotion and how this can be used for branding activities. This led to the result that music causes positive emotional response of the consumer, when used in marketing actions. Through emotional response, the perception, identity, and recall of a brand are strongly influenced.
Co-design and endorsement
(2018)
The purpose of this paper is to determine the success factors regarding celebrities of the music business involved in fashion advertising. That famous people have the power to help brands and products to stand out among others is proven and popular. This paper is concentrating on successful musicians and their endorsements of fashion brands and examines the benefits for both, the brand and the artist. It investigates how consumer perceives brand and artist collaboration and what factors enhance the purchase intention and increase sales. This paper is structured in the following manner: The introduction presents the research question and sets the aim for the paper, followed by the analysis of the existing literature. The paper ends with conclusions, limitations and suggestions for further research.
The purpose of this paper is to find out how musicians are able to differentiate themselves from their competitors by using their style. Casting shows and the evolution of the contestants’ style during and after the show serve as a paradigm for creating differentiation by style. The method of research was diverse but largely drawn from research papers as well as online magazines and newspapers. Within the scope of the research, it was feasible to draw on a varied range of sources to answer the research question. In the course of this research paper, it was possible to define key factors for a musician to create differentiation by style in modern times. By examining the style of casting show contestants, it was explored to which extent they transform from rather normal people to pop stars. In reducing the detailed analysis of casting shows to three shows and contestants, only a broad overview was provided. The paper is of interest to those working for casting shows in order to develop those.
The purpose of this research paper is to find out to which extent rap music merchandise is influencing the fashion world of today. The research design is mainly created through analysing Internet sources. The key findings of this paper describe the way rap merchandise is created and distributed nowadays. Furthermore, is explained how an idea becomes trend and how rap artists influence trend creation, especially through social media channels. The topic around rap merchandising products and strategies is a very new one, thus there is barely any literature to find. Nevertheless, trend leading online music platforms and blogs offer a lot of grey literature about the research topic. In this paper, the analysis of rap merchandise and fashion is focused on clothing items to create a better understanding in which dimension the influence of rap merchandise on the fashion world is given.
The purpose of this paper is to identify key success factors of Crowdfunding in the Music Business in order to discuss their applicability to the Fashion Industry. The research methodology applied is a literature review examining academic and non-academic references. Key research findings include four main success factors. First explains the innovative and adaptive nature of the music industry caused by historical evolution. Second strong commitment and connection to the fan base is identified as success factor. Third manageable effort for the realisation on a large scale reduces the risk of a failure. And, last success factor describes the successful implementation of campaign specific aspects. The discussion finally shows that three of four success factors can be adapted to the Fashion Business. Due to little scientific research in the field of Crowdfunding in the Music Business, the success factors are worked out independently, based on general literature. Accordingly, quantitative testing and further analysis is recommended.
Case study: Marillion
(2018)
The purpose of this paper is to highlight the use of crowdfunding,
demonstrated by a case study about the rock band Marillion. The research
methodology applied is a literature review examining academic references. On this basis, a case study by exemplary illustrating the rock band Marillion and how they invented crowdfunding has been drafted. Findings suggest that the crowdfunding concept is no new phenomenon, since the rock band Marillion has investigated the business model. Recently, the funding method is applied to the fashion industry; hence it is efficient and engaging to finance projects by that specific business model. A limitation of this paper is that the topic of crowdfunding is new to the fashion business and needs further research and tests until they are practicable to interpret. Results show that there is a high potential for using crowdfunding in fashion by reaching a long-term change in this industry.
Empirical software engineering experts on the use of students and professionals in experiments
(2018)
Using students as participants remains a valid simplification of reality needed in laboratory contexts. It is an effective way to advance software engineering theories and technologies but, like any other aspect of study settings, should be carefully considered during the design, execution, interpretation, and reporting of an experiment. The key is to understand which developer population portion is being represented by the participants in an experiment. Thus, a proposal for describing experimental participants is put forward.
Rational strain engineering requires solid testing of phenotypes including productivity and ideally contributes thereby directly to our understanding of the genotype-phenotype relationship. Actually, the test step of the strain engineering cycle becomes the limiting step, as ever advancing tools for generating genetic diversity exist. Here, we briefly define the challenge one faces in quantifiying phenotypes and summarize existing analytical techniques that partially overcome this challenge. We argue that the evolution of volatile metabolites can be used as proxy for cellular metabolism. In the simplest case, the product of interest is a volatile (e.g., from bulk alcohols to special fragrances) that is directly quantified over time. But also nonvolatile products (e.g., from bulk long-chain fatty acids to natural products) require major flux rerouting that result potentially in altered volatile production. While alternative techniques for volatile determination exist, rather few can be envisaged for medium to high-throughput analysis required for phenotype testing. Here, we contribute a detailed protocol for an ion mobility spectrometry (IMS) analysis that allows volatile metabolite quantification down to the ppb range. The sensivity can be exploited for small-scale fermentation monitoring. The insights shared might contribute to a more frequent use of IMS in biotechnology, while the experimented aspects are of general use for researchers interested in volatile monitoring.
Kleider machen Drummer
(2018)
Nicht nur Songs machen Musiker bekannt, sondern auch ihr Look: David Bowie, Kurt Cobain, Madonna, Elvis Presley haben durch ihre Musik und ihren Kleidungsstil ganze Generationen geprägt. Viele Drummer legen sehr viel Wert auf Technik - doch wenn man in der Musikbranche erfolgreich sein will, sollte man sich auch seiner Wirkungsweis bewusst sein.
A case study with four German fashion retail brands was conducted in order to measure the performance of their Omnichannel services. In detail, their Click & Collect service was analyzed. Click & Collect is one of the first introduced Omnichannel services in fashion retailing. Omnichannel services integrate different sales and communication channels providing a seamless customer journey experience. Offline, online, and mobile app customer experiences should provide a seamless customer experience. Omnichannel performance of the four retailers Decathlon, Hunkemöller, Massimo Dutti and Galeria Kaufhof was measured via mystery shopping. A seamless customer journey experience is not yet a standard in German fashion retailing. The four companies differ in many process details. The biggest market potential and the recommendation for further research emerges in deficits of the offline store Omnichannel customer experience. Here, all four case companies have room to improve. Best overall results regarding the integration of offline, online and mobile shops were found with Hunkemöller, followed by Decathlon, Massimo Dutti, and Galeria Kaufhof.
Radiofrequency ablation is an ablation technique to treat tumors with focused heat. Computer tomography, ultrasound and magnetic resonance imaging (MRI) are imaging modalities which can be used for image-guided procedures. MRI offers several advantages in comparison to the other imaging modalities, such as radiation-free fluoroscopic imaging, temperature mapping, a high-soft-tissue contrast and free selection of imaging planes. This work addresses the application of 3Dcontrollers for controlling interventional, fluoroscopic MR sequences at the scenario of MR guided radiofrequency ablation of hepatic malignancies. During this procedure, the interventionalist can monitor the targeting of the tumor with near-real time fluoroscopic sequences. In general, adjustments of the imaging planes are necessary during tumor targeting, which is performed by an assistant in the control room. Therefore, communication between the interventionalist in the scanner room and the assistant in the control room is essential. However, verbal communication is impaired due to the loud scanning noises. Alternatively, non-verbal communication between the two persons is possible, however limited to a few gestures and susceptible to misunderstandings. This work is analyzing different 3D-controllers to enable control of interventional MR sequences during MR-guided procedures directly by the interventionalist. Leap Motion, Wii Remote, SpaceNavigator, Phantom Omni and Foot Switch were selected. For that a simulation was built in C++ with VTK to feign the real scenario for test purposes. Previous results showed that Leap Motion is not suitable for the application while Wii Remote and Foot Switch are possible input devices. Final evaluation showed a generally time reduction with the use of 3D-controllers. Best results were reached with Wii Remote in 34 seconds. Handholding input devices like Wii Remote have further potential to integrate them in real environment to reduce intervention time.
Marketing ist allgegenwärtig! Es begegnet Ihnen im Supermarkt, in Onlineshops und in sozialen Medien. Doch was steckt konkret hinter dem Marketing und wie gestalten Unternehmen es erfolgreich? Auf diese und weitere Fragen geht das Buch im Detail ein. Zu Beginn vermittelt es Grundlagen zum Konsumentenverhalten, zum Kaufprozess und zur persönlichen Kaufentscheidung. Vor diesem Hintergrund erläutert es Ziele und Maßnahmen der strategischen Marketingplanung. Darauf aufbauend präsentiert es Aspekte einer operativen Marketingplanung und diskutiert die Marken-, Produkt-, Distributions-, Kommunikations- sowie Preispolitik ausführlich. Marketingprofis geben Einblicke in die Praxis. Ein Best Practice-Beispiel macht das Gelernte schnell (be)greifbar.
Nachdem Unternehmen Klarheit über das Kundenverhalten und die damit zusammenhängenden Determinanten haben, gilt es, in einem zweiten Schritt eine Strategie auszuarbeiten, die die bestmögliche Befriedigung der Kundenbedürfnisse in den Mittelpunkt des Handelns setzt. Je besser dieses den Unternehmen gelingt, umso besser lassen sich damit deren eigene Ziele verwirklichen. Dabei gilt es zunächst, einen Marketingplan zu entwickeln.
Das vorliegende Buch ist als eine zusammenfassende Bearbeitung der über viele Jahre gesammelten Erkenntnisse im Bereich der Schussfadenzugkraftmessung entstanden. Für die Schusseintragstechniken mit Greifern, Projektilen und Luftstrahl ist es gelungen, Formeln zur Berechnung der Schussfadenzugkräfte zu erarbeiten, die es auch dem Weberei-Praktiker ermöglichen, die maximalen Schussfadenzugkräfte mit guter Genauigkeit voraus zu berechnen. Ausgehend von diesen Ergebnissen kann über einen Vergleich mit dem Schwachstellenniveau des Schussgarns die Entscheidung über die Einsatzfähigkeit des Schussgarns auf der vorgesehenen Webmaschine oder über die Einsatzfähigkeit der vorgesehenen Webmaschine selbst bei der gewünschten Drehzahl herbeigeführt werden.
Es wird eine Möglichkeit zur Quantifizierung der Schädigung von Geweben bei der Martindale-Flachscheuerung vorgestellt, die eine interessante Möglichkeit darstellt, vergleichende Untersuchungen durchzuführen, auch wenn die Gewebe nicht bis zu einem Fadenbruch gescheuert werden. Die Untersuchungen deuten außerdem eine Skalierbarkeit der Scheuerversuche bei unterschiedlichen Anpressdrücken an. Sollte sich diese Beobachtung in weiteren Untersuchungen bestätigen, würde dies eine grundlegende Vereinfachung der Scheuerprüfung für verschiedene Anwendungen bedeuten.
Im Zuge von REACH wurden gängige hocheffektive halogenierte Flammschutzmittel verboten, da diese unter dem Verdach stehen, kanzerogen, mutagen und teratogen zu sein. Zur Zeit fehlen entsprechende Alternativen. Daher werden am DTNW neue umweltfreundliche und halogenfreie Flammschutzmittel auf der Basis von Phosphor- und Stickstoffverbindungen entwickelt, um einen entsprechenden Flammschutz zu gewährleisten. Neue Möglichkeiten werden im Rahmen dieses Artikels vorgestellt.
Perceptual integration of kinematic components in the recognition of emotional facial expressions
(2018)
According to a long-standing hypothesis in motor control, complex body motion is organized in terms of movement primitives, reducing massively the dimensionality of the underlying control problems. For body movements, this low dimensional organization has been convincingly demonstrated by the learning of low-dimensional representations from kinematic and EMG data. In contrast, the effective dimensionality of dynamic facial expressions is unknown, and dominant analysis approaches have been based on heuristically defined facial ‘‘action units,’’ which reflect contributions of individual face muscles. We determined the effective dimensionality of dynamic facial expressions by learning of a low dimensional model from 11 facial expressions. We found an amazingly low dimensionality with only two movement primitives being sufficient to simulate these dynamic expressions with high accuracy. This low dimensionality is confirmed statistically, by Bayesian model comparison of models with different numbers of primitives, and by a psychophysical experiment that demonstrates that expressions, simulated with only two primitives, are indistinguishable from natural ones.
In addition, we find statistically optimal integration of the emotion information specified by these primitives in visual perception. Taken together, our results indicate that facial expressions might be controlled by a very small number of independent control units, permitting very low dimensional parametrization of the associated facial expression.
Makerspaces sind ein Element einer Open Innovation und bieten die Möglichkeit, den „klassischen Erfinder“ und „Tüftler“ aus seiner Garage, seinem Keller oder seiner Werkstatt herauszuholen. Ziel dabei ist es, ihm ein professionelles und leistungsfähiges Umfeld zur Realisierung seiner Ideen zu bieten, ihn in den Austausch mit Gleichgesinnten zu bringen und eine Verwertungsplattform für die entwickelten Ideen und Prototypen aufzubauen. Diese Optionen sind auch kleinen und mittelständischen Unternehmen zugänglich zu machen, um ihnen darüber die Möglichkeit zu geben, mit ihren zur Verfügung stehenden Mitteln, ähnlich wie Großunternehmen in Sachen Innovation und Kooperation vorzugehen.
Genau hier setzt die vorliegende Studie an und geht der Frage nach den Anforderungen kleiner und mittelständischer Unternehmen an Makerspaces auf den Grund.
In a corporation’s financial life “going public” by means of an IPO is probably the single most important decision. It turns a private company into a public one. Our book will provide an inside view of the IPO process. On the one hand, it draws on the insights of an experienced investment banker, who has gone through numerous IPO transactions. On the other hand, it relates the story of an actual IPO through the eyes of a Chief Executive Officer who has taken two of his companies public. This unique double perspective is our book’s defining feature. We do not discuss initial public offerings in a textbook style fashion. What we would like to bring out is a more comprehensive portrayal of a “once-in-a-lifetime” event for most companies and their management, alike.
Das Ziel dieses Beitrags ist es, einen Überblick zum Thema Kundenbewertung im Sport zu geben. Unter Berücksichtigung der Besonderheiten des Sports aus Marketing-Sicht sowie der wesentlichen Grundlagen des Relationship Marketing im Sport werden der Begriff Kundenwert definiert sowie die Ziele der Kundenbewertung vorgestellt. Vor diesem Hintergrund werden etablierte Methoden der Kundenbewertung aus der Unternehmenspraxis präsentiert. Hierzu gehören die ABC-Analyse, die Kundenerfolgsrechnung, die Customer-Lifetime-Analyse, Scoring-Modelle und Portfolio-Analysen. Diese Verfahren werden insbesondere auf ihre Eignung zur Kundenbewertung im Rahmen des CRM in Sportvereinen analysiert und kritisch gewürdigt.
Der erweiterte Marketing-Mix eröffnet neue Perspektiven für das Sportmarketing. Menschen werden als die wichtigsten Bestandteile einer Sportorganisation betrachtet. Ziel ist es, tragfähige Strategien zu entwickeln, um die Kundenbedürfnisse zu erfüllen. Im Folgenden wird der erweiterte Marketing-Mix des Relationship Marketing im Sport ausführlich vorgestellt.
Ein zukunfts- und innovationsfähiges Personalmanagement stellt sicher, dass der Organisation in qualitativer und quantitativer Hinsicht das erforderliche Personal zur Verfügung steht, um die organisationalen Ziele zu erreichen. Vor dem Hintergrund zunehmend dynamischer Umfelder gelingt dies mit den bislang etablierten Arbeitsweisen, Praktken und Instrumenten des Personalmanagements künftig nicht mehr. Daher muss das Personalmanagement permanent neue Arbeitsweisen, innovative Praktiken und neue Instrumente entwickeln (Exploration). Gleichzeitig hat es jedoch auch die bisherigen "Routineaufgaben" zunehmend effizienter zu erledigen (Exploitation). Diese Herausforderung des beidhändigen Agierens zwischen Exploration und Exploitation verlangt nach dezidierten Innovationsstrukturen, Praktiken und Fähigkeiten im Personalmanagement. Der vorliegende Beitrag plädiert daher für eine organisatorisch aufgehängte "Forschung und Entwicklung" im Personalbereich, die neue Themen innerhalb und außerhalb der Organisation aufgreift, um daraus innovative Personalpraktiken zu generieren.
§ 303 Schuldenkonsolidierung
(2018)
So far, only few authors addressed the serum-free, defined differentiation of adipocytes. And there are hardly any trials available on the defined maintenance of adipocytes. In this study, the development of a defined culture medium for the adipogenic differentiation of primary human adipose-derived stem cells (ASCs) was aimed. Based on the addition of specific factors for the replacement of serum, ASCs were differentiated to viable and characteristic adipocytes for 14 days, which was proven through the accumulation of lipids, the expression of perilipin A and by the release of leptin and glycerol. Furthermore, a defined maintenance medium was developed, which supported the maturation and stability of cells for a long-term period of additional 42 days until day 56.
A series of novel biomedical TPCUs with different percentages of hard segment and a silicone component in the soft segment were synthesized in a multi stage one-pot method. The kinetic profiles of the urethane formation in TPCU-based copolymer systems were monitored by rheological, in line FTIR spectroscopic (React IR) and real-time calorimetric (RC1) methods. This process-analytically monitored multi step synthesis was successfully used to optimize the production of medical-grade TPCU elastomers on preparative scale (in lots of several kg) with controlled molecular structure and mechanical properties. Various surface and bulk analytical methods as well as systematic studies of the mechanic response of the elastomer end-products towards compression and tensile loading were used to estimate the bio-stability of the prepared TPCUs in vitro after 3 months. The tests suggested that high bio-stability of all polyurethane formulations using accelerating in vitro test can be attributed to the synthetic design as well as to the specific techniques used for specimen preparation, namely: (1) the annealing for reducing residual polymer surface stress and preventing IES, (2) stabilization of the morphology by long time storage of the specimens after processing before being immersed in the test liquids, (3) purification by extraction to remove the shot chain oligomers which are the most susceptible to degradation. All mechanical tests were performed on cylindrical and circular disc specimens for modelling the thickness of the meniscus implants under application-relevant stress conditions.
Workshops and tutorials
(2018)
The 19th International Conference on Product-Focused Software Process Improvement (PROFES 2018) hosted two workshops and three tutorials. The workshops and tutorials complemented and enhanced the main conference program, offering a wider knowledge perspective around the conference topics. The topics of the two workshops were Hybrid Development Approaches in Software Systems Development (HELENA) and Managing Quality in Agile & Rapid Software Development Processes (QUaSD). The topics of the tutorials were The human factor in agile transitions – using the personas concept in agile oaching, Process Management 4.0 – Best Practices, and Domain-specific languages for specification, development, and testing of autonomous systems.
Lots of movies are produced every year, too many to watch all of them and in particular, to get an overview about the evolution of typical movie genres and actors playing in them. Moreover, it is a challenging problem to detect correlations among the movies and the actors in those movies, in particular, if we are interested in time-varying data patterns like trends, countertrends, or anomalies and outliers. Those correlations are specifically interesting if they can be inspected on different levels of granularity, e.g., temporal, but also hierarchical in form of country- or continent-based correlations. In this paper we describe the IMDb Explorer, a webbased visualization tool that consists of two major views denoted by the movie cosmos and the career lines. Both views are linked and interactively manipulable while a list of user-defined metrics are explorable. We illustrate the usefulness of the visualization tool by applying it to the entire movie database provided by IMDb.
Zur Entwicklung einer Sofortpreiskalkulation für CNC-Drehteile werden Machine-Learning-Ansätze sowie ein deterministischer Algorithmus untersucht. Der deterministische Algorithmus funktioniert ausschließlich für Drehteile mit geringer Komplexität. Die Machine Learning Modelle hingegen sind zukunftsfähiger, da die ersten Ergebnisse bereits sehr geringe Abweichungswerte zu den festgelegten Referenzpreisen erreichen können. Mit steigendem Datenaufkommen können beide Machine-Learning-Modelle mit geringem Aufwand weiter verbessert werden.
The current paper studies the influence of geometrical parameters of the fused deposition modeling (FDM) - fused filament fabrication (FFF) 3D printing process on printed part strength for open source desktop 3D printers and the most popular material used for that purpose - i.e., polylactic acid (PLA). The study was conducted using a set of different nozzles (0.4, 0.6, and 0.8 mm) and a range of layer heights from the minimum to maximum physical limits of the machine. To assess print strength, a novel assessment method is proposed. A tubular sample is loaded in the weakest direction (across layers) in a three point bending fixture. Mesostructure evaluation through scanning electronic microscopy (SEM) scans of the samples was used to explain the obtained results. We detected a significant influence of geometric process parameters on sample mesostructure, and consequently, on sample strength.
Properties data of phenolic resins synthetized for the impregnation of saturating Kraft paper
(2018)
The quality of decorative laminates boards depends on the impregnation process of Kraft papers with a phenolic resin,which constitute the raw materials for the manufacture of the cores of such boards.In the laminates industries,the properties of resins are adapted via their syntheses,usually by mixing phenol and formaldehyde in a batch,where additives,temperature and stirring parameters can be controlled. Therefore, many possibilities of preparation and phenolic resins exist, that leads to different combinations of physico chemical properties. In this article, the properties data of eight phenolic resins synthetized with different parameters of pH and reaction times at 60 °C and 90 °C are presented: the losses of pH after synthesis and the dynamic viscosities measured after synthesis and one the solid content is adjusted to 45%w/w in methanol. Data aquired by Differential Scanning Calorimetry (DSC) of the resins and Inverse Gas Chromatography (IGC) of cured solids are given as well.
This article contains data on the synthesis and mechanical characterization of polysiloxane-based urea-elastomers (PSUs) and is related to the research article entitled “Influence of PDMS molecular weight on transparency and mechanical properties of soft polysiloxane-urea-elastomers for intraocular lens application” (Riehle et al., 2018) [1]. These elastomers were prepared by a two-step polyaddition using the aliphatic diisocyanate 4,4′-Methylenbis(cyclohexylisocyanate) (H12MDI), a siloxane-based chain extender 1,3-Bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane (APTMDS) and amino-terminated polydimethylsiloxanes (PDMS) or polydimethyl-methyl-phenyl-siloxane-copolymers (PDMS-Me,Ph), respectively. (More details about the synthesis procedure and the reaction scheme can be found in the related research article (Riehle et al., 2018) [1]).
Amino-terminated polydimethylsiloxanes with varying molecular weights and PDMS-Me,Ph-copolymers were prepared prior by a base-catalyzed ring-chain equilibration of a cyclic siloxane and the endblocker APTMDS. This DiB article contains a procedure for the synthesis of the base catalyst tetramethylammonium-3-aminopropyl-dimethylsilanolate and a generic synthesis procedure for the preparation of a PDMS having a targeted number average molecular weight of 3000 g mol−1. Molecular weights and the amount of methyl-phenyl-siloxane within the polysiloxane-copolymers were determined by 1H NMR and 29Si NMR spectroscopy. The corresponding NMR spectra and data are described in this article.
Additionally, this DiB article contains processed data on in line and off line FTIR-ATR spectroscopy, which was used to follow the reaction progress of the polyaddition by showing the conversion of the diisocyanate. All relevant IR band assignments of a polydimethylsiloxane-urea spectrum are described in this article.
Finally, data on the tensile properties and the mechanical hysteresis-behaviour at 100% elongation of PDMS-based polyurea-elastomers are shown in dependence to the PDMS molecular weight.
Rattern unerwünscht
(2018)
Die Mesago Messe Frankfurt als Veranstalter der Formnext 2018 haben von Prof. Dr.-Ing. Steffen Ritter von der Hochschule Reutlingen eine anschauliche Übersicht erstellen lassen, welche die Vielfalt der unterschiedlichen Verfahren zur additiven Fertigung verständlich erklärt. Die kleine, zweisprachige Broschüre mit dem Titel „AM Field Guide“ bietet auf 12 Seiten strukturierte Vergleichsdarstellungen von insgesamt 19 gängigen 3-D-Druck Technologien für Kunststoffe, Metalle sowie andere Werkstoffe und dazu noch einen Überblick über die Phasen und Prozessschritte in Projekten für Bauteile, die additiv hergestellt werden.
Nowadays robust, energy-efficient multisensor microsystems often come with heavily restricted power budgets and the characteristic of remaining in certain states for a longer period of time. During this time frame there is no continuous clock signal required which gives the opportunity to suspend the clock until a new transition is requested. In this paper, we present a new topology for on-demand locally clocked finite state machines. The architecture combines a local adaptive clocking approach with synchronous and asynchronous components forming a quasi synchronous system. Using adaptive and local clocking comes with the advantages of reducing the power consumption while saving design effort when no global clock tree is needed. Combining synchronous and asynchronous components is beneficial compared to previous fully asynchronous approaches concerning the design restrictions. The developed topology is verified by the implementation and simulation of a temperature-ADC sensor system realized in a 180 nm process.
Functionalised particles are highly requested in materials research, as they can be used as vital components in many advanced applications such as smart materials, functional coatings, drug carrier systems or adsorption materials. In this study, furan-functionalised melamine-formaldehyde (MF) particles were successfully prepared for the first time using an organic sol-gel process. Commercially available 2-Aminomethylfuran (AMF) and 2-Aminomethyl-5-methylfuran (AMMF) were used as modifying agents. In the isolated polymer particles, a melamine (M) to modifying agent ratio of M:AMF mol/mol 2.04:1 and M:AMMF ratio of mol/mol 1.25:1 was used. The obtained particles were isolated in various centrifugation and re-dispersion cycles and analysed using ATR-FT-IR, Raman and solid state 13C NMR spectroscopy, TGA, SEM and DSC measurements. Upon functionalisation the size of the MF particles increased (MF 1.59 µm, 27% CV (coefficient of variation); MF-AMF 2.56 µm, 25% CV; MF-AMMF 2.20 µm, 35% CV). DSC measurements showed that another type of exothermic residual reactivity besides condensation-based curing takes place with the furan-modified particles that is not related to the liberation of volatile compounds. The newly obtained particles are able to undergo Diels-Alder reactions with maleimide groups. The characteristic IR and Raman absorbance bands of the reaction products after the particles were reacted with 4,4′-Diphenylmethanebismaleimide reagent confirm the formation of a Diels-Alder adduct.
Impact of phenolic resin preparation on its properties and its penetration behavior in Kraft paper
(2018)
The core of decorative laminates is generally made of stacked Kraft paper sheets impregnated with a phenolic resin. As the impregnation process in industry is relatively fast, new methods need to be developed to characterize it for different paper-resin systems. Several phenolic resins were synthesized with the same Phenol:Formaldehyde ratio of 1:1.8 and characterized by Fourier Transform Infrared Spectrometry (FTIR) as well as Size-Exclusion Chromatography (SEC). In addition, their viscosities and surface tensions when diluted in methanol to 45% of solid content were measured. The capacity of each resin to penetrate a Kraft paper sheet was characterized using a new method, which measures the conductivities induced by the liquid resin crossing the paper substrate. With this method, crossing times could be measured with a good accuracy. Surprisingly, the results showed that the penetration time of the resin samples is not correlated to the viscosity values, but rather to the surface tension characteristics and the chemical characteristics of paper. Furthermore, some resins had a higher swelling effect on the fibers that delayed the crossing of the liquid through the paper.
Im Vergleich zum digitalen Layoutentwurf weist der analoge Layoutentwurf einen wesentlich geringeren Automatisierungsgrad auf. Dies gilt insbesondere für den Layoutentwurf von Hochfrequenzschaltungen, wo Einflüsse der lokalen Layoutumgebung besonders zu berücksichtigen sind. Bei dieser sog. Kontextabhängigkeit geraten sowohl Optimierungsalgorithmen als auch herkömmliche Generatoransätze schnell an Grenzen. In dieser Arbeit wird eine funktionale Erweiterung des bekannten Generatorprinzips eingesetzt, die es erlaubt, Informationen aus der Layoutumgebung der Instanz in die Layoutgenerierung einzubeziehen. Mit dieser sog. kontextbasierten PCell gelingt die Automatisierung konkreter, bisher nur manuell lösbarer Probleme des Layoutentwurfs von Hochfrequenzschaltungen. Die Arbeit zeigt das Potential kontextbasierter PCells für die weitere Steigerung des Automatisierungsgrades im analogen Layoutentwurf.