bluuebunny/crossref_metadata_2025 huggingface dataset:
»Dieser Fehler ist einzig und allein mein Fehler« – Politische Kommunikation im Zeichen der Corona-Pandemie
Authors: Spieß Constanze
Published: August 2021

In der aktuellen Corona-Pandemie stellt die Kommunikation politischer Akteur:innen an die Bevölkerung eine wichtige Maßnahme dar, um die politischen Entscheidungen zu begründen und zu legitimieren. Der vorliegende Beitrag untersucht die politische Kommunikation an die Bevölkerung am Beispiel der Ansprachen und Regierungserklärungen des österreichischen Bundeskanzlers Sebastian Kurz und der deutschen Bundeskanzlerin Angela Merkel im Zeitraum von März 2020 bis März 2021. Sind der Redeanlass und das intendierte Ziel der Ansprachen und Erklärungen der Akteur:innen typologisch gleich, zeigen sich in der konkreten sprachlichen Realisierung der Ansprachen und Erklärungen deutliche Unterschiede, aber auch Gemeinsamkeiten. Der Beitrag nimmt insbesondere die argumentative Struktur, die Redehandlungen, die damit verbundenen Positionierungs- und Adressierungsverfahren sowie die kommunikativen Strategien in den Blick und arbeitet sowohl Gemeinsamkeiten als auch Unterschiede der Reden heraus.
Early Medieval Britain, c. 500–1000
Authors: Naismith Rory
Published: August 2021

Early medieval Britain saw the birth of England, Scotland and of the Welsh kingdoms. Naismith's introductory textbook explores the period between the end of Roman rule and the eve of the Norman Conquest, blending an engaging narrative with clear explanations of key themes and sources. Using extensive illustrations, maps and selections from primary sources, students will examine the island as a collective entity, comparing political histories and institutions as well as societies, beliefs and economies. Each chapter foregrounds questions of identity and the meaning of 'Britain' in this period, encouraging interrogation and contextualisation of sources within the framework of the latest debates and problems. Featuring online resources including timelines, a glossary, end-of-chapter questions and suggestions for further reading, students can drive their own understanding of how the polities and societies of early medieval Britain fitted together and into the wider world, and firmly grasp the formative stages of British history.
Singularities, Bifurcations and Catastrophes
Authors: Montaldi James
Published: August 2021

Suitable for advanced undergraduates, postgraduates and researchers, this self-contained textbook provides an introduction to the mathematics lying at the foundations of bifurcation theory. The theory is built up gradually, beginning with the well-developed approach to singularity theory through right-equivalence. The text proceeds with contact equivalence of map-germs and finally presents the path formulation of bifurcation theory. This formulation, developed partly by the author, is more general and more flexible than the original one dating from the 1980s. A series of appendices discuss standard background material, such as calculus of several variables, existence and uniqueness theorems for ODEs, and some basic material on rings and modules. Based on the author's own teaching experience, the book contains numerous examples and illustrations. The wealth of end-of-chapter problems develop and reinforce understanding of the key ideas and techniques: solutions to a selection are provided.
Vaccine Hesitancy of Health-Care Workers: Another Challenge in the Fight Against COVID-19 in Istanbul
Authors: Yilmaz Sarper , Çolak Figen Ünal , Yilmaz Erdal , Ak Rohat , Hökenek Nihat Müjdat , Altıntaş Mehmet Mustafa
Published: August 2021

Objective:

Health-care workers (HCWs) are often seen as the most reliable source of vaccine-related information for their patients; nevertheless, various studies show that HCWs experience vaccine hesitation. In this study, the aim was to determine the reasons for vaccine hesitation among HCWs working in a large public hospital and its affiliated units in Istanbul.

Methods:

A descriptive method for collecting qualitative data was designed for this study. The data of the HCWs were analyzed in line with the vaccine hesitancy factors put forward by the World Health Organization (WHO).

Results:

The most important vaccine hesitancy theme that emerged was the fear and lack of confidence in the vaccines, which was expressed at a higher rate than any other theme in all HCWs. The most cited reason for fear/lack of confidence in the vaccine was the fear of its side effects. It was observed that the HCWs who reported hesitation about vaccination due to pregnancy and breastfeeding consisted of women. The second most common theme for vaccine hesitation was reported as an inconvenience in accessing the vaccines. Although HCWs have priority, they stated that their reason for vaccine hesitancy was due to heavy personal issues or workloads. The final theme was about complacency, or thinking they do not need the vaccine.

Conclusions:

Vaccine hesitation is a challenge that can be overcome with detailed monitoring and policy-making. Although the vaccine seems to be more significant, we do not want to see vaccine hesitancy grow more than the vaccine itself.
3D SKETCHES IN VIRTUAL REALITY AND THEIR EFFECT ON DEVELOPMENT TIMES
Authors: Seybold Carsten , Mantwill Frank
Published: August 2021

In the product development process, digital support continues to advance. Some work steps during product development are still carried out without assistance. Sketch creation is one of these. Therefore, the content created here is rarely documented due to the effort required for digital transformation. An alternative can be sketching in virtual reality. This article explores whether 3D sketching in VR enables faster sketching and can offer the basic features of hand-drawn sketches. To verify this, a tool for 3D sketching was developed. 27 test subjects were asked to solve one out of two different design tasks using this tool. The experiments were evaluated using video coding to identify the subjects actions. The created solutions have been analyzed about quality. The study showed initial indications that sketching in VR generally enables faster processing while maintaining the same solution quality.
DESIGN FOR LONGEVITY - A FRAMEWORK TO SUPPORT THE DESIGNING OF A PRODUCT'S OPTIMAL LIFETIME
Authors: Carlsson Simon , Mallalieu Adam , Almefelt Lars , Malmqvist Johan
Published: August 2021

Extending the lifespan of products and parts is seen as a solution in the transition towards a circular economy. There are many proposed design approaches argued to facilitate this. However, extending the lifespan of products and parts is not always desirable, and product developers should instead strive to design for a specific longevity; the product's optimal lifetime. The latter in turn depends on many various contextual factors, and this paper has identified the three main contextual factors as; the user, the business, and the resource efficiency. Considering these three appropriately can help product developers to define their product's optimal lifetime. Altogether, these components promote the mindset of Design for Longevity. Specifically, as extracted from this paper: “Design for Longevity aims at designing products with an optimal lifetime, where optimal means taking the user, the business and the resource efficiency perspectives into account when designing the life of a product”. A Design for Longevity framework is proposed and evaluated in this paper, and it is concluded that the proposed Design for Longevity framework can support product developers to implement the Design for Longevity mindset.
DESIGN STUDENTS’ TAKE ON CO-DESIGN IN HEALTH: REFLECTIONS FROM LEARNING AND EDUCATION PERSPECTIVES
Authors: Høiseth Marikken , Forshaug Ann Kristin
Published: August 2021

Using three projects as a showcase, the aim of this article is to report on design students’ take on co-design in health, in terms of both outcomes and processes. It builds on project work conducted in a master’s course called ‘Design for Society’, reserved for 4th-year industrial design students in the Department of Design at the Norwegian University of Science and Technology. The students were encouraged to explore how healthcare services could facilitate active, informed and involved patients. The overall theme was provided by a cluster funded by the Norwegian Research Council addressing co-creative service design and innovation in health. Based on initial research, the students, organised in groups, identified a chronic illness that has a lifelong impact on everyday life, such as cystic fibrosis, fibromyalgia, and Alzheimer’s disease. We give an account of three selected projects by showcasing developed concepts, central methods and tools, and we share key reflections from the students and the course educators on their experiences of working with co-design in health in an academic environment.
DESIGNING A SHAPED SEAT-PAN CUSHION TO IMPROVE POSTURAL (DIS)COMFORT REDUCING PRESSURE DISTRIBUTION AND INCREASING CONTACT AREA AT THE INTERFACE
Authors: Fiorillo Iolanda , Song Yu , Vink Peter , Naddeo Alessandro
Published: August 2021

Remaining seated for extended periods increases the risk health issues and discomfort perception. Consequently, the seat-pan design is crucial and could be mainly influenced by two factors: pressure distribution and seat contour. For seat pan discomfort, the lower average pressure is accompanied by less discomfort. Moreover, a seat contour with a large contact area is correlated with more comfort. Thus, a shaped cushion had been accurately designed (Virtual Prototype) and realized (Physical Prototype) aiming to translate the pressure distribution due to interaction between seat and buttock in a geometric shape, suitable for the international population (including P5 females and P95 males). With this shape, the pressure should be more uniform and lower, the contact area at interface bigger, and the perceived comfort higher. Both Virtual and Physical Prototype design had been described in this paper through a repeatable and straightforward approach. Also, experiments had been performed to validate the hypothesis through a comparison with a standard flat cushion. Results showed the goal of the design had been reached: the shaped cushion scored less pressure distribution and higher contact area than the flat cushion.
DESIGNING A TEMPORARY COLD PROTECTIVE GEAR CONSTRUCTED BY FOLDING NEWSPRINT PAPER CONSIDERING HEAT-RETAINING PROPERTY AND RIGIDITY
Authors: Oda Tatsuya , Wesugi Shigeru
Published: August 2021

During the cold season, the cold protective products are often short during evacuation life after a natural disaster. If evacuees can make and wear simple cold protective gears by using materials obtainable on site, it will reduce the burden on the evacuees in emergent situation. Therefore, we investigated the structure constructed by folding newsprint paper, which can improve the heat retention effect and be applied to various body shapes. Focusing on the glide reflection structure repeating a smaller chamber, the basic size was determined by experiments with reference to the accordion shape, and the experimental results indicated that the heat retention effect was significantly greater than that of a mere air layer and those of ordinary fabrics. Next, it was found that the apex angle of structure had no significant difference in the heat retention effect. Then, the dimensions of the structure were determined to maintain the air layer under the pressure of the clothes by simulation of structural analyses. Finally, we made a temporary cold protective gear that can practically cover the trunk of the body and found that the heat retention effect was significantly higher than that of unprocessed newsprint and that of accordion shape.
DEVELOPMENT OF OPEN ABDOMEN DEVICE BASED ON BIODESIGN METHODOLOGY
Authors: Sierra Manuela , Pereira Salín , Isaza Juan Felipe , Montoya Iván Darío , Diaz Christian Andrés , Velásquez Diego , Londoño Carolina
Published: August 2021

Open Abdomen (OA) therapy, is purposely leaving the fascial edges of the abdomen un-approximated after a laparotomy. During the OA therapy, there must be a temporary abdominal closure (TAC) device installed in the patient to achieve abdominal closure gradually without affecting its safety. However, the actual TAC devices have some gaps in terms of functionality or usability, therefore a new device is proposed. Intending to design a usable and functional technique for patients all over the world, the BioDesign Innovation Process was used. This iterative methodology focuses on healthcare needs, invention, and concept development with three main phases: Identify, Invent and Implement. At the end of these phases, the team successfully developed two new abdominal closure techniques that fill in the gaps of functionality and usability, using a simulator that realistically mimicked the physical and mechanical properties of an open abdomen. In terms of functionality, the novel techniques showed safe installation, operational security, secure grip, low invasiveness and control of intra-abdominal pressure. In terms of usability, the devices showed better results in efficiency, effectiveness and easy re-exploration than the control group.
ELICITING CHILDREN'S EXPECTATIONS FOR HAND PROSTHESES THROUGH GENERATIVE DESIGN TOOLS
Authors: Dursun Melis , Şener Pedgley Bahar
Published: August 2021

When designing assistive devices for children with disabilities, designers mostly consider technical and functional aspects and overlook factors that affect their usage from children’s perspective. Therefore, in most cases, assistive devices do not fully meet the needs of the children and may create a negative effect on children’s well-being. To explore the opinion’s of children using 3D printed hand prosthetics in Country-Xx, individual generative sessions were conducted with four children with limb deficiency. Generative tools are used to engage children and encourage them to express themselves in relation to prosthesis use. The main aim was to investigate how children provide design relevant information that may help designers to achieve improved assistive devices that support children’s physical, emotional and social wellbeing. Children’s feedback related to prosthetic usage categorized under two topics; expectations of children for prosthesis use and children’s priority expectation for the prosthesis. The findings are argued to be useful and usable by NGOs, product designers and design researchers who work with children with disabilities.
ENGINEERING STUDENT ATTAINMENT AND ENGAGEMENT THROUGHOUT THE DESIGN PROCESS
Authors: Thomson Avril , Grierson Hilary
Published: August 2021

The paper reports on a study that aims to gain an understanding of how senior engineering design students engage and attain throughout the various stages of the design process during a major design project. Following a literature review it sets out to answer 3 main research questions

Q1. Do students engage more with certain stages of the design process during major project work?;

Q2. Do students attain better during certain phases of the design process during major project ?

Q3. Is there a difference in this attainment between year groups of the same degree programme ?

The methodology adopted employs an analysis of marks and an online questionnaire to collect data. Patterns and trends in how senior BEng and MEng Product Design Engineering students engage and attain within the design process are presented, identified and discussed and in turn used to inform reflection on the research questions set.
EVALUATING PROTOTYPING SUPPORT IN EARLY TRANSFORMATIVE PSS DESIGN
Authors: Ruvald Ryan Michael , Larsson Andreas , Johansson Askling Christian , Bertoni Alessandro , Larsson Tobias
Published: August 2021

Prototypes are an established tool for rapidly increasing learning, communication and decision making rationale for design projects. The proven success has spawned a litany of approaches and methods for building and planning the efficient planning and construction of prototypes. Translating these methods into simple usable tools to assist novice designers has generated broadly applicable canvases to support prototyping across the design process. Product Service System design has similarly introduced prototyping methods and tools into the process. Presently there is a lack of support for generating early phase tangible prototypes for functional PSS design aimed at more radically innovative solutions instead of currently dominant traditional products with traditional add-on services. This work explores the viability of utilizing existing prototyping support tools in the context of early PSS design through workshops with student designers and practitioners. The data from these workshops illuminates the alignments and misalignment gaps presented as guidelines to enable better support for early PSS designers.
A MULTI-AGENT REINFORCEMENT LEARNING FRAMEWORK FOR INTELLIGENT MANUFACTURING WITH AUTONOMOUS MOBILE ROBOTS
Authors: Agrawal Akash , Won Sung Jun , Sharma Tushar , Deshpande Mayuri , McComb Christopher
Published: August 2021

Intelligent manufacturing (IM) embraces Industry 4.0 design principles to advance autonomy and increase manufacturing efficiency. However, many IM systems are created ad hoc, which limits the potential for generalizable design principles and operational guidelines. This work offers a standardizing framework for integrated job scheduling and navigation control in an autonomous mobile robot driven shop floor, an increasingly common IM paradigm. We specifically propose a multi-agent framework involving mobile robots, machines, humans. Like any cyberphysical system, the performance of IM systems is influenced by the construction of the underlying software platforms and the choice of the constituent algorithms. In this work, we demonstrate the use of reinforcement learning on a sub-system of the proposed framework and test its effectiveness in a dynamic scenario. The case study demonstrates collaboration amongst robots to maximize throughput and safety on the shop floor. Moreover, we observe nuanced behavior, including the ability to autonomously compensate for processing delays, and machine and robot failures in real time.
A REVIEW OF DESIGN RESEARCH IN ENGINEERING PRODUCTIVITY IN THE ARCHITECTURE, ENGINEERING AND CONSTRUCTION (AEC) INDUSTRY
Authors: Wong Yvonne Yu Bing , Joyce Sam Conrad , Blessing Lucienne
Published: August 2021

Productivity studies in the AEC industry has gained significant attention in the past decade, however the impact from actual industry application has not kept up. This could be attributed to the focus on construction productivity instead of engineering productivity. This paper presents a systematic literature review on engineering design productivity in AEC industry focusing on design research method applications.
A TOPOLOGICAL FORMALISM FOR QUANTITATIVE ANALYSIS OF DESIGN SPACES
Authors: Ortiz Joshua , Summers Joshua , Coykendall James , Roberts Travis , Rai Rahul
Published: August 2021

The objective of this paper is to present a mathematically grounded description of the two topological spaces for the design problem and the design solution. These spaces are derived in a generalized form such that they can be applied by researchers studying engineering design and developing new methods or engineers seeking to understand the influence that changes in the problem space have on the solution space. In addition to the formal definitions of the spaces, including assumptions and limitations, three types of supported reasoning are presented to demonstrate the potential uses. These include similarity analysis to compare spaces, an approach to sensitivity analysis of the solution space to changes in the problem space, and finally a distance measure to determine how far a current proposal is to the feasible solution space. This paper is presented to establish a common vocabulary for researchers when discussing, studying, and supporting the dyadic nature of engineering design (problem-solution co-evolution).
ACCELERATED PARAMETERIZED COMPUTATION OF THE THERMAL BEHAVIOUR OF DUAL PURPOSE CASKS
Authors: Roppel Matthias , Lange Christopher , Roith Bernd , Rieg Frank
Published: August 2021

One of the fundamental requirements for dual purpose casks, which are used for the transport and interim storage of spent fuel assemblies, is the safe removal of the resulting decay heat. To ensure this the temperature fields are determined using numerical methods. However, their modelling is complex and the computation time-consuming.

In order to accelerate this thermal assessment, we have developed z88ENSI, an independent simulation tool based on finite element analysis. With regard to the modelling, various parameters can be varied quickly with our newly designed mesh manipulation procedure. Concerning the computation time, we developed and implemented an approach for calculating three-dimensional temperature fields, based on an already existing two-dimensional method which lacked precision. We accelerate the calculation by using extended thermal gap constraints, which depict the thermal behaviour of the non-meshed, gas-filled gaps inside the cask. We validate the results of our calculation tool by comparing them with those generated with Ansys. The results of the comparison temperatures differ between −0.8% and 3.7%. The speedup of z88ENSI for the specific validation setting is between 6.9 and 15.0.
ADOPTION OF MODULAR DESIGN BY MAKERS AND PROSUMERS. A SURVEY
Authors: Asión-Suñer Laura , López-Forniés Ignacio
Published: August 2021

The growing tendency for end users to get involved in the design and manufacturing phase of their own products has led to the proliferation of makers and prosumers. The tools available for this have been adapted to be used by non-specialized users who seek to meet their own needs and wants. Modular design offers a series of advantages directly related to the needs of current users, but which has hardly been used to benefit them. Instead, its development has geared towards aspects that are hidden to the consumer, such as flexible production.

This work presents a survey, part of a wider research, whose objective is to develop a methodological model for the prosumer to benefit from modular design. The survey was open for several months and was only aimed at makers, prosumers and designers. A dissemination plan was drawn up where the current communication channels of these users were taken into account. The results show what the current prosumer is like, what their needs are and how they relate to modular design. Finally, the conclusions provide information on how to develop a model proposal to ensure its correct usability and acceptance.
AN ADAPTED METHOD FOR DESIGN PROCESS CAPTURING TO MEET THE CHALLENGES OF DIGITAL PRODUCT DEVELOPMENT
Authors: Gerschütz Benjamin , Spießl Bettina Vanessa Martina , Benjamin Schleich , Wartzack Sandro
Published: August 2021

In our modern, interconnected and globalized world, design is in motion, to adapt to new situations. But successful Design in Motion must be based on Processes in Motion. For a target-oriented adaptation of the processes to the new, challenging conditions, the as-is procedures must be captured and analysed. For this analysis, established capturing procedures from production or administration cannot be used due to some special features of design processes and workflows, which will be discussed in this contribution. To compensate for the weaknesses of existing methods, we propose an adapted method for holistic design process capturing. With the procedure, we want to enable an economic process analysis, which is crucial for small and medium-size companies in particular. To give an insight into the practical application of the method, we exemplarily analyse the process of a shaft construction and FEM-evaluation by two different employees. Based on this analysis and to verify the relevance of the presented approach, an evaluation with respect to the requirements is done.
AN APPROACH TO ENHANCE PRODUCT UNIVERSALITY USING VAGUE NUMBERS DURING INITIAL DESIGN PHASE
Authors: Singh Ravindra , Tandon Puneet
Published: August 2021

Universal design facilitates all user, a convenient interaction with the environment, product and services without the need for any adaptation and specialized designs. Recent studies have shown that designers and manufacturers are focusing only on a limited group of users during product development. Current design process or methodology cannot cater to all set of users i.e. Fully Abled People (FAP), Specially Abled People (SAP), and Differently Abled People (DAP) due to complexity in need interpretation. Identification and extraction of needs of diverse user set is a complex problem. Generally, information gathered from the users is linguistic in nature and comprises of uncertainties and ambiguities, which hamper conversion of users’ requirements into product attributes to deliver universal solutions. The aim of this work is to eliminate these uncertainties and extract the actual needs of all users. This work proposes the integration of Universal Product Design model with generic design process to improve universal product design practice. Linguistic preferences of the users are captured and converted into vague numbers to identify the important product attributes and provides a systematic framework of need prioritization.
EXAMINING THE QUALITY OF KNOWLEDGE TRANSFERS – THE DRAFT OF AN EMPIRICAL RESEARCH
Authors: Grum Marcus , Klippert Monika , Albers Albert , Gronau Norbert , Thim Christof
Published: August 2021

Already successfully used products or designs, past projects or our own experiences can be the basis for the development of new products. As reference products or existing knowledge, it is reused in the development process and across generations of products. Since further, products are developed in cooperation, the development of new product generations is characterized by knowledge-intensive processes in which information and knowledge are exchanged between different kinds of knowledge carriers. The particular knowledge transfer here describes the identification of knowledge, its transmission from the knowledge carrier to the knowledge receiver, and its application by the knowledge receiver, which includes embodied knowledge of physical products. Initial empirical findings of the quantitative effects regarding the speed of knowledge transfers already have been examined. However, the factors influencing the quality of knowledge transfer to increase the efficiency and effectiveness of knowledge transfer in product development have not yet been examined empirically. Therefore, this paper prepares an experimental setting for the empirical investigation of the quality of knowledge transfers.
EXAMINING THE USER EXPERIENCE OF LIFE CYCLE ASSESSMENT TOOLS AND THEIR ABILITY TO CATER TO ECODESIGN IN EARLY-STAGE PRODUCT DEVELOPMENT PRACTICE
Authors: Chatty Tejaswini , Qu Yingkun , Ba-Sabaa Hana H. , Murnane Elizabeth L.
Published: August 2021

With the topic of sustainability steadily gaining importance and public awareness, there is growing consensus about the need to incorporate environmental considerations in early stage product development (PD). This makes it imperative for PD practitioners to have access to methods and tools, including life cycle assessment (LCA), that support sustainability integration. This paper evaluates existing LCA tools on their ability to cater to the early-stage PD context, by having users apply the tools in practice and exploring their experiences. We find that the challenges to applying LCA in this context emanate primarily from the shortcomings of the tools themselves. Our evaluation metrics for tool critique are derived from a thematic analysis of user interviews we conducted, refined according to information and interaction design principles from human-computer interaction (HCI). This unique approach helps triangulate insights from users with literature, to produce design recommendations for the development of novel LCA tools tailored to the early PD context.
EXPERIENCES OF DESIGN AT HACKATHONS: INITIAL FINDINGS FROM AN INTERVIEW STUDY
Authors: Flus Meagan , Hurst Ada
Published: August 2021

Hackathons are short design events at which participants collaboratively progress through the entire design process. They pose opportunities for design research, but the existing research is limited, as is the understanding of design activity at hackathons. In our study, we summarize the hackathon design process of 10 interview participants from varying disciplines, levels of experience, and hackathon events. The summarized account reveals a decreased emphasis on the beginning phases of the design process, mainly problem definition, but an increased emphasis on the end, specifically the pitch portion of the event. These differences are mainly due to the limited time frame. We further assess the effect of time limitations at hackathons by comparing hackathons to other instances of design, emphasizing the impact of time constraints on iteration. We conclude our discussion with an exploration of the role expertise has on the design process by comparing the accounts of designers and developers.
EXPLORATORY RESEARCH ON CULTURAL COMPUTING FOR HUMAN-COMPUTER INTERACTION. THE CASE OF SUSTAINABILITY.
Authors: Grimal Lou , di Loreto Inès , Troussier Nadège
Published: August 2021

The digital transition refers to the fact that information technology (IT) tools are used in all our activities on a daily basis. In this article, we will study the use of IT tools in engineering activities. It is possible to say that today IT tools accompany engineers in their professional practices. This presence of computing has also enabled the development and considerable changes in human-technologies interactions. Moreover, the socio-economic context has evolved considerably, and environmental issues have taken on an important role in engineering. We ask whether and to what extent these two contexts (digital and ecological) have changed the expectations of design professionals with regard to IT tools. Should the way of addressing the type of human-machine interaction in engineering tools be modified in depth? The objective of this paper is to understand what types of human-computer interaction would allow a more satisfying user experience for those future engineers who are using new technologies and marked by the ecological urgency. To do so, we will focus on a particular engineering context (design for sustainability) and a particular engineering practice (LCA practice).
EXTRACTING DESIGN RECOMMENDATIONS FROM INTERACTIVE GENETIC ALGORITHM EXPERIMENTS: APPLICATION TO THE DESIGN OF SOUNDS FOR ELECTRIC VEHICLES
Authors: Souaille Tom , Petiot Jean-François , Lagrange Mathieu , Misdariis Nicolas
Published: August 2021

The integration of users' perception in the design process is and important challenge for the optimization of products. This study describes how design recommendations can be drawn, from a perceptual experiment with a panel of subjects using a multi-objective interactive genetic algorithm (IGA). The application concerns the bi-objective optimization of the unpleasantness and the detectability of sounds for electric vehicles (EV). After a description of the experimental protocol for the assessment of the detectability and the unpleasantness of EV sounds (listening test), a set of optimal sounds (Pareto efficient) is defined with an IGA experiment. The analysis of these sounds, based on a probabilistic analysis of the selection process, leads to the definition of design recommendations. A second listening test, involving recommended sounds but also other design proposals, allows an evaluation of the validity of the approach. Results show that the sounds recommended obtain interesting performance, in particular to improve the detectability of EV sounds.
AN AUTOMATED METHOD TO CONDUCT IMPORTANCE-PERFORMANCE ANALYSIS OF PRODUCT ATTRIBUTES FROM ONLINE REVIEWS - AN EXTENSION WITH A CASE STUDY
Authors: Lin Kangcheng , Kim Harrison
Published: August 2021

With the growth of online marketplaces and social media, product designers have been seeing an exponential growth of data available, which can serve as an extremely valuable source of information communicated from customers without geographical limitations. The data will reveal customers’ preferences, which can be expensive and slow to obtain via traditional methods such as survey and questionnaires. While existing methods in the literature have been proposed to extract product information and make inference from online data, they have limitations, especially in providing reliable results and in dealing with data sparsity. Therefore, this paper proposes a method to conduct an Important-performance analysis from online reviews. The major steps of this method involve using latent Dirichlet allocation (LDA) to identify product attributes, using IBM Watson Natural Language Understanding tool to perform aspect-based sentiment analysis, and using XGBoost model to infer product attribute importance from the collected dataset. In our case study, we have collected over 150,000 text reviews of more than 3,000 laptops from Amazon.
GAMIFICATION AND NUDGING TECHNIQUES FOR IMPROVING USER ENGAGEMENT IN MENTAL HEALTH AND WELL-BEING APPS
Authors: Auf Hassan , Dagman Jessica , Renström Sara , Chaplin John
Published: August 2021

In the last decades, mental health disorders have been a growing source of the global burden of disease. Thousands of mental health apps are available nowadays addressing this problem, but studies show that the effectiveness of these apps is jeopardized by the low user engagement.

This study investigates the most potentially effective gamification and nudging techniques in design for improving engagement in mental health apps for young people, by carrying out app-reviews for top installed mental health apps on Google play store and connecting it with engagement data, in addition to conducting expert-interviews with professionals from gamification and design background.

From the findings, techniques that participated in improving retention rates included using app character for creating app narrative and user interaction, in addition to adopting a non-forcible language. While to improve app daily duration of use, simplification nudge, and stating the recommended minutes of use found to be useful. Personalization and social interaction techniques were potentially effective for improving the frequency of app daily use. For the young age group, using juicy feedback and high-quality gamification were recommended
INTRODUCING A FRAMEWORK TO GENERATE AND EVALUATE THE COST EFFECTS OF PRODUCT (FAMILY) CONCEPTS
Authors: Mertens Kai G. , Schmidt Mark , Yildiz Tugba , Meyer Matthias
Published: August 2021

Product concept generation and evaluation are critical for the success of new product developments (NPD) because managers need to select the most profitable product concepts. However, current approaches can be restricted to single products and do not cover product families' effects. Similarly, they do not necessarily capture all requirements and usually lack extensive cost analyses. Thus, this paper proposes a framework supporting product concept generation and evaluation by providing an accessible conceptualization to overcome the limitations. Using the so-called Extended Axiomatic Design (EAD) supports designers and managers to configure the requirements across product concepts' various domains while concurrently evaluating their economic consequences. The study applies the framework on a simplified case of a bottle manufacturer to conceptualize four product concepts. The case illustrates how the EAD can be used as a virtual testbed to generate and evaluate new product concepts. Finally, designers and managers can make more informed decisions about product concepts by considering their economic and engineering selection criteria to select the most profitable NPD project configuration.
INVESTIGATING PERCEIVED MEANINGS AND SCOPES OF DESIGN FOR ADDITIVE MANUFACTURING
Authors: Berni Aurora , Borgianni Yuri , Obi Martins , Pradel Patrick , Bibb Richard
Published: August 2021

The concept of Design for Additive Manufacturing (DfAM) is gaining popularity along with AM, despite its scopes are not well established. In particular, in the last few years, DfAM methods have been intuitively subdivided into opportunistic and restrictive. This distinction is gaining traction despite a lack of formalization. In this context, the paper investigates experts' understanding of DfAM. In particular, the authors have targeted educators, as the perception of DfAM scopes in the future will likely depend on teachers' view. A bespoke survey has been launched, which has been answer by 100 worldwide-distributed respondents. The gathered data has undergone several analyses, markedly answers to open questions asking for individual definitions of DfAM, and evaluations of the pertinence of meanings and acceptations from the literature. The results show that the main DfAM aspects focused on by first standardization attempts have been targeted, especially products, processes, opportunities and constraints. Beyond opportunistic and restrictive nuances, DfAM different understandings are characterized by different extents of cognitive endeavor, convergence vs. divergence in the design process, theoretical vs. hands on approaches.
MAINTAINING CONSISTENCY ACROSS DESIGN DESCRIPTIONS IN ENGINEERING PRODUCT DEVELOPMENT
Authors: McKay Alison , Rice Hugh P. , Chau Hau Hing , de Pennington Alan
Published: August 2021

The success of engineering product development depends on the effective communication of design descriptions in formats that suit the needs and capabilities of all stakeholders involved in the delivery to market and through-life support of products. Configuration management is a core design process to ensure the consistency of the technical data package, i.e., the collection of design descriptions needed to support the development, manufacture and operation of a given product. Bills of Materials (BoMs) are critical parts of the technical data package because they act as integrators: adapting detailed design descriptions to suit the needs of particular downstream processes. The ability to reconfigure BoMs while maintaining internal consistency of the technical data package (where all BoM configurations are complete and compatible with each other) is a major challenge. In this paper, we introduce research exploring computational tools that could support engineers in manipulating BoMs while also maintaining the internal consistency of the technical data package.
MATERIAL SELECTION AS COOPERATIVE PROCESS: A FRAMEWORK PROPOSAL FOR A CHANGING ECONOMY
Authors: Papile Flavia , Del Curto Barbara , Coccia Andrea
Published: August 2021

In current era of Anthropocene, human activities and their consequences on Earth ecosystems are under the lens of scientific research. Researchers in every field of study are trying to find alternatives to promote sustainable development. So it is for design, where researchers exploiting the problem-framing and problem-solving nature of the design discipline itself, trying to find new methodologies and tools to enhance sustainable development.

One of the most important tasks in the design for a sustainable production is focused on material selection. In this paper, authors will present a reflection upon material selection methods and an overview of existing material repositories. Traditionally, material selection is usually attributed to designers or technical professionals but nowadays information concurring in materials selection became a complex task to manage. Therefore, authors propose a case study concerning information management upon materials and their selection presented in a new possible approach: material selection as a collaborative task between several departments of an industrial company, to promote an aware information management activity upon materials.
METHOD TO DEFINE MEASUREMENT UNCERTAINTY FOR DESIGN SPACE EXPLORATION IN ADDITIVE MANUFACTURING
Authors: Cazaubon Valentine , Abi Akle Audrey , Fischer Xavier
Published: August 2021

Additive manufacturing is a process used for quick prototyping in industries. Geometrical defects are observed on printed parts. The aim of the paper is to propose a design method to implement measurements uncertainties into a Design Space for Additive Manufacturing parameters selection. To do so, two tests have been realized. The first test consists in determining the instrument’s uncertainty by measuring a standard length several times by an operator. The second test aim to determine the uncertainty within operators mesurement of geometric outputs (clad’s height, clad’s width, dilution’s height, dilution’s width and contact angle). Based on the results of our tests, uncertainties have been applied in our Design Space populated with 31 real printed clads. The uncertainties display with error bars on scatterplots allow to capitalize the knowledge for his/her exploration of the Design Space for future prints. The given information provides to ease the engineer to select the optimal solution (laser power, tool speed and wire feed speed) for his/her given Additive Manufacturing problematic among candidate points
NEED FOR ACTION FOR A COMPANY-WIDE INTRODUCTION OF SYSTEMS ENGINEERING IN MACHINERY AND PLANT ENGINEERING
Authors: Wilke Daria , Schierbaum Anja , Kaiser Lydia , Dumitrescu Roman
Published: August 2021

Machinery and plant engineering in Germany is characterized by small and medium-sized enterprises. The so-called backbone of German industry is in transition towards Industry 4.0, with systems becoming more complex and the development task becoming an interdisciplinary task. Systems Engineering is a proven approach to realize these systems. Projects with SE approaches were accompanied and potentials of SE were structured. In this paper, we discuss the need for action for the company-wide introduction and present a solution concept.
NEW DESIGN FOR INSTALLATION (DFI) METHODOLOGY FOR LARGE SIZE AND LONG LIFE CYCLE PRODUCTS: APPLICATION TO AN ELEVATOR
Authors: Retolaza Iban , Zulaika Izaro , Remirez Adrian , Cabello Mario Javier , Campos Mikel Alberto , Ramos Ainara
Published: August 2021

This paper presents a new design methodology for improving the installation of large size and long life cycle goods that need to be assembled in the field. The approach integrates a modified design for assembly (DfA) methodology. A new approach is proposed for integrating different DfA methodologies and tested in a real case study of a machine room-less (MRL) elevator. A tool for analyzing and quantifying the proposed solutions is developed. Improvements of approximately 20 pp are achieved during the elevator installation and on-site assembly process, which could mean a potential reduction in assembly time of 11 h or 6%. Additional extensions and guidelines are recommended to improve the methodology and the tool.
NODAL COSINE SINE MATERIAL INTERPOLATION IN MULTI OBJECTIVE TOPOLOGY OPTIMIZATION WITH THE GLOBAL CRITERIA METHOD FOR LINEAR ELASTO STATIC, HEAT TRANSFER, POTENTIAL FLOW AND BINARY CROSS ENTROPY SHARPENING
Authors: Denk Martin , Rother Klemens , Zinßer Mario , Petroll Christoph , Paetzold Kristin
Published: August 2021

Topology optimization is typically used for suitable design suggestions for objectives like mean compliance, mean temperature, or model analysis. Some modern modeling technics in topology optimization require a nodal based material interpolation. Therefore this article is referred to a continuous material interpolation in topology optimization. To cover a smooth and differentiable density field, we address trigonometric shape functions which are infinitely differentiable. Furthermore, we extend a so-known global criteria method with a sharpening function based on binary cross-entropy, so that sharper solutions results. The proposed material interpolation is applied to different applications such as heat transfer, elasto static, and potential flow. Furthermore, these different objectives are together optimized using a multi-objective criterion.
OPERATIONAL EXCELLENCE FOR SYSTEMS ENGINEERING (OESE): STATE OF ART
Authors: Kokolo Joseph , Eynard Benoit
Published: August 2021

Operational Excellence (EO) is increasingly present in scientific and managerial news. Increasing competition, increasingly uncertain events, demands customers and society increasingly pressing, the evolution of systems towards cyber physics systems, push organizations to adapt their engineering methodologies. Excellence operational (EO) is one of the answers proposed by the scientific literature to make engineering organizations more flexible, more responsive, more efficient and therefore more competitive. In this article, we share a state of the art of operational excellence (EO) in system engineering (IS) through its most modern methodologies: the Lean Six Sigma (LSS), Theory of Constraints (TOC) and Agility (A) with an operational approach including social and societal responsibility via the Quality-Cost-Delay-Security-Environment (QCDSE). We finish by sharing four assumptions that will serve as a basis, in our future contribution, to propose a synergy solution to implement an Operational Excellence approach in systems engineering organizations.
ORGANIZATION DESIGN IN MOTION: DESIGNING AN ORGANIZATION FOR AGILITY
Authors: Shafiee Kristensen Saeedeh , Shafiee Mitra , Shafiee Sara
Published: August 2021

Increasingly competitive and multifaceted business landscapes and the accelerating pace of innovation require organizations to build in-house capability to evaluate the effectiveness of their design and redesign their organizational structure to drive agile product development. The purpose of this research is to examine how the ability of an organization to implement agile is affected by the organization design. A case study based on 35 semi-structured interviews and field observations at a leading, large-size, Danish software development company was carried out. Adopting the contingency perspective, this paper presents the relevant organizational elements that can increase organizational agility and how the companies can leverage the advantages of the design. Accordingly, it provides a framework that compromises eighteen core organizational practices grouped into four categories (organizational structure and governance, culture and people, IT tools and data infrastructure, and processes) to understand the effect of organization design on agile product development.
PACKAGE PLANNING OF AUTONOMOUS VEHICLE CONCEPTS
Authors: König Adrian , Telschow Daniel , Nicoletti Lorenzo , Lienkamp Markus
Published: August 2021

Autonomous driving will not just change vehicles themselves, but also the entire concept of mobility. New business models and the expansion of individual mobility to new groups of society are merely examples of possible impact. In order to create optimal vehicles for new technologies right from the start, vehicle concept optimization helps to find suitable solutions from numerous possible variations. The package as part of a vehicle concept is currently focused on passenger cars with steering wheels and pedals. Therefore, a new method is needed to plan the package of driverless and autonomous vehicles. In this paper, we present a possible method that separates the vehicle into the interior and the front and rear wagon. This way, different seating layouts can be considered and evaluated in terms of package efficiency. In the results, we check the plausibility by rebuilding a current battery electric vehicle (BEV) and, by way of example, show the variation of the gear angle and different seating layouts, and the resulting package efficiency.