bluuebunny/crossref_metadata_2025 huggingface dataset:
An Approach for Choosing the Cost Effective Design for a Product-Service System While Maintaining its Desired Reliability
Authors: Schneider Jannik Alexander , Mozgova Iryna , Lachmayer Roland
Published: July 2019

With the spread of product-service systems as business models the life cycle costs are of increasing importance as a measurement of product cost. A key factor that drives these costs is the desired reliability of the products used to provide the service. Since the customer usually expects as uninterrupted service availability, it is imperative to achieve the the required reliability. Therefore a large variety of methods has been developed to maximize the reliability of a product. But these approaches focus on the maximization of the reliability and disregard the resulting product costs. This can lead to designs that over perform concerning their reliability requirements but also exceed their target costs. Which will result in the product-service system not being competitive in the marketplace or lowering the company's profit. This paper shows an approach on how to use markov chains to enable a quick comparison of life cycle costs from different product-service system designs With this it will be possible to make better informed decisions about the costs of a system while still meeting the reliability targets.
Ecodesign from High School to Bachelor Level: A French Case Study
Authors: Perpignan Catherine , Robin Vincent , Baouch Yacine , Eynard Benoit
Published: July 2019

Nowadays, our society needs that an awareness be made about our impact on the planet. Many more or less alarmist reports tell us that there is a need to change our consumption patterns, production and energy consumption … One of the main axes to achieve these goals is education. Thus integrating sustainable development into the skills of future engineers is an essential challenge but above all a necessity to modify and reduce our impact on the environment and to allow a global understanding of the complexity of our society. For this, companies must also evolve. Some will do so in a strategy of greening their image, others will have to comply with the various regulations of their sector of activity and a final category of these companies will use this opportunity as a vector of innovation. Each at their level will make a contribution, the integration over time of new sustainability skills within their staff will expand their action. In this article, we will focus our study on the integration of ecodesign in the industry and the impact that this generates in terms of skills to acquire, values to evolve and knowledge to master.
Eco-Innovation by Anticipatory Failure Determination (AFD) Method
Authors: Chen Jahau Lewis , Hung Chuan
Published: July 2019

This paper presents an eco-innovation method by revised the “Anticipatory Failure Determination (AFD)” method which is the failure analysis tools in TRIZ theory. Using the functional analysis to list the system process and make the functional analysis model. Based on the environmental efficiency factors and functional analysis model, Substance-Field inverse analysis can find a lot of failure modes in the system. In order to assess the priority of risk improvement, the designer can calculate the environmental risk priority number including controlling documents, public image and environmental consequences. Designer can quickly find out the potential failure mode in the complex engineering system with the systematic steps. The TRIZ methods are used for finding eco-innovation idea to solve failure problem. The capability of the whole eco-innovative design process was illustrated by the electrical motorcycle case.
Promoting Eco-Innovation in Academic Eco-Systems
Authors: Yannou-Le Bris Gwenola , Jubera Romane , Olsson Annika , Cerf Marianne
Published: July 2019

University incubators are an opportunity to promote the dissemination of research, change teaching practices and contribute to territorial economic development. In this article we present a structural and dynamic analysis of such an innovation system of a Swedish eco-innovation system by proposing elements for analysing the success of such innovation systems.
Sustainability Research Implementation in Product Development - Learnings from a Longitudinal Study
Authors: Hallstedt Sophie I. , Nylander Johanna W.
Published: July 2019

Industry is a main stakeholder when it comes to realising the transition towards a sustainable future. Academia, with its, knowledge and methods, needs to support the industry on this journey. This paper, focuses on the practical learnings on how to implement sustainability research from an industrial perspective. It aims to share some lessons learnt from a longitudinal case study and a development journey in implementing sustainability research in the product innovation process at GKN Aerospace Engine System. The paper gives an overview, based on a literature study, of what is required to successfully implement sustainability in product development. It also provides a summary of the different research projects at the company with learnings from practical and academic perspectives, and the main learnings and changes in relation to different development phases in the sustainability journey. Although, this journey began over ten years ago, and shows the importance of long-term collaboration, it provides key-factors that can be applied also in short term collaborations and for faster implementation of research in general and sustainable product development research in particular.
Implementation of Parameterized Work Piece Deviations and Measurement Uncertainties into Performant Meta-models for an Improved Tolerance Specification
Authors: Müller Andreas Michael , Oberleiter Thomas , Willner Kai , Hausotte Tino
Published: July 2019

Geometrical work piece deviations are unavoidable and directly affect the function and quality of technological products. Tolerance management is regarded as a crucial subtask of the development of technological products, because it ensures the function as well as a sufficient product quality while maintaining reasonable production costs. That means, that geometric tolerances as an essential part of the product description greatly affect the functional capability, manufacturability, mountability, verifiability and the costs of the final product. The research group FOR 2271 was founded to enable the computer-aided specification of tolerances, which meet the requirements of production, assembly, verification and function by close cooperation between the departments responsible for product design, assembly and metrology. The aim of this contribution is to determine the manufacturing process scatter as well as the measurement uncertainty and establish ways and means to include that information into efficient meta-models, ultimately enabling improved and accurate tolerance analyses.
Sequential Updating of Quantitative Requirements for Increased Flexibility in Robust Systems Design
Authors: Funk Matthias , Jautze Marcus , Strohe Manfred , Zimmermann Markus
Published: July 2019

In early development stages of complex systems, interacting subsystems (including components) are often designed simultaneously by distributed teams with limited information exchange. Distributed development becomes possible by assigning teams independent design goals expressed as quantitative requirements equipped with tolerances to provide flexibility for design: so-called solution-spaces are high-dimensional sets of permissible subsystem properties on which requirements on the system performance are satisfied. Edges of box-shaped solution spaces are permissible intervals serving as decoupled (mutually independent) requirements for subsystem design variables. Unfortunately, decoupling often leads to prohibitively small intervals. In so-called solution-compensation spaces, permissible intervals for early-decision variables are increased by a compensation mechanism using late-decision variables. This paper presents a multi-step development process where groups of design variables successively change role from early-decision to late-decision type in order to maximize flexibility. Applying this to a vehicle chassis design problem demonstrates the effectiveness of the approach.
A Critical Review of the Integrated Logistics Support Suite for Aerospace and Defence Programmes
Authors: Vaskic Ljubisa , Paetzold Kristin
Published: July 2019

The Integrated Logistics Support (ILS) can be described as an approach for optimisation of in-service (logistics) activities and minimisation of the life cycle costs of a system. ILS is an integral part of systems engineering in aerospace and defence programmes.

More recently, the Aerospace and Defence Industries Association of Europe (ASD) has released a broad set of specifications for ILS, the so-called ASD ILS Suite. Most of these specifications are published in cooperation with the Aerospace Industries Association of America (AIA) and one specification with AIA and the Airlines for America (A4A). Thus, the ASD ILS Suite is recognised and used in the largest aerospace and defence markets.

The aim of this paper is to present the results of a critical review on the readiness of the ASD ILS Suite for its applicability in aerospace and defence programmes.
Ai Motion Control – A Generic Approach to Develop Control Policies for Robotic Manipulation Tasks
Authors: Kurrek Philip , Jocas Mark , Zoghlami Firas , Stoelen Martin , Salehi Vahid
Published: July 2019

Current robotic solutions are able to manage specialized tasks, but they cannot perform intelligent actions which are based on experience. Autonomous robots that are able to succeed in complex environments like production plants need the ability to customize their capabilities. With the usage of artificial intelligence (AI) it is possible to train robot control policies without explicitly programming how to achieve desired goals. We introduce AI Motion Control (AIMC) a generic approach to develop control policies for diverse robots, environments and manipulation tasks. For safety reasons, but also to save investments and development time, motion control policies can first be trained in simulation and then transferred to real applications. This work uses the descriptive study I according to Blessing and Chakrabarti and is about the identification of this research gap. We combine latest motion control and reinforcement learning results and show the potential of AIMC for robotic technologies with industrial use cases.
Combining Unmergeables: A Methodological Framework for Axiomatic Fusion of Qualitative Design Theories
Authors: Horvath Imre
Published: July 2019

The proposed methodological framework concerns axiomatic theory fusion (ATF) of non-additive engineering design theories. ATF includes seven steps: (i) semantic discretization of the composite theories, (ii) deriving epistemological entities by logical/semantic analysis, (iii) establishing and representation of relations among all relevant epistemological entities, (iv) combining the inter- theoretical epistemological entities of the component theories, (v) deriving propositions based on the combined set of epistemological entities, (vi) transcription of the epistemological entities and propositions into a textual/visual theory description, and (vii) validation of the resultant theory in application contexts. The proposed framework makes ATF an effective, content independent methodology for fusing component theories, no matter if they are descriptive, explanatory, predictive or controlling in nature. ATF methodology requires professional comprehension and rigor from the researchers. It is necessary to justify the logical correctness and practical validity of the target theory in the specific application context.
Consistent Modelling of the Impact Model of Modular Product Structures with Linking Boundary Conditions in SysML
Authors: Schwede Lea-Nadine , Hanna Michael , Wortmann Nadine , Krause Dieter
Published: July 2019

The challenges related to product structures, which go hand in hand with megatrends such as individualization, can be met with the modularity of product structures. With the help of various modularization methods, modular product structures are created with regard to different goals. There are many references to the effects of modular product structures on life phases and economic targets in the literature. These effects were collected in previous research in a generic impact model. Since there is a lot of information about the effects, such models become very comprehensive and thereby difficult to handle. For this reason, the impact model is consistently generated using SysML. The adaptation to company scenarios is possible through the use of simulations with which, for example, company-related and product-related boundary conditions can be controlled by means of a User Interface.
Early Stage Model Based System Design under Uncertainties
Authors: Oizumi Kazuya , Ito Akio , Aoyama Kazuhiro
Published: July 2019

System design at the early stage of design plays an important role in design process. Model based systems engineering is seen as a prominent approach for this challenge. System design can be explored by means of system simulation. However, as the system is a complex system, system model tends to have high level of abstraction. Therefore, the models cannot depict every details of the system, which makes optimization unreasonable.

Furthermore, at the early stage of design, there are many uncertainties such as success of technological developments. By properly incorporating uncertain factors in system design, the system can be tolerant. Currently system design is conducted by experienced experts. However, for more complex system, it would be difficult to continue the current practice. Therefore, a method to support design team to make decision in system design is needed.

This paper proposes a computational support for the system design. Design constraints, which seems the core information that design team wants at system design, are modeled. By visualizing constraints quantitatively and intuitively, the proposed method can support design team to conduct system design and design study.
Future-oriented PGE-product Generation Engineering: An Attempt to Increase the Future User Acceptance through Foresight in Product Engineering Using the Example of the iPhone User Interface
Authors: Marthaler Florian , Stahl Sven , Siebe Andreas , Bursac Nikola , Spadinger Markus , Albers Albert
Published: July 2019

During the process of product engineering, decisions with uncertain consequences have to be made about future development (Albers et al., 2017a). Customer, user and vendor requirements that are already known and those who are relevant for the future have to be recognized and transferred into consistent projects. Classical approaches like customer surveys or market analyses are only partially useful for anticipating or validating future product requirements since they rather evaluate todays situation. Methods of foresight are preferably applied to make decisions under circumstances of uncertainty and to generate future knowledge. The following work treats thus a system that enables the user to deduce future requirements based on trend analyses. The system which was first mentioned in Albers et al. and further developed in Marthaler et al. will serve as the basis. (Albers et al., 2018a; Marthaler et al., 2019). The goal is to present and evaluate a system based on the analysis and identification of trends that allows to identify robust requirements for future product generations and to transfer them into concrete development agreements in the form of a development road map.
Towards Model-based Process Engineering
Authors: Inkermann David
Published: July 2019

The high interaction between process and product models in product development and systems engineering (SE) is common sense. However, most research in the field of model based systems engineering (MBSE) focusses of physical systems (hardware and software). The authors claim that this focus is a main reason for the low acceptance and high effort for implementation of SE and MBSE in industrial practice. Thus, this contribution aims at supporting an integrative analysis and synthesis of process and product models by introducing the concept and framework of Model-based Process Engineering. Based on established research this framework introduces three main systems, namely the system of processes, system of product models, and system of tools to describe complex product development. The main contribution of this work is a preliminary concept to structure and link the systems of processes and product models. Besides form the description of the main relations between the systems an integrated modelling concept to represent links between the process and product model system is proposed.
Definition of a “Sport-Health” Semantic Space
Authors: Millet Antoine , Abi Akle Audrey , Masson Dimitri , Legardeur Jérémy
Published: July 2019

Product success depends on its capacity to meet users’ expectations. Human Centred Design approach helps to reach this success by focussing on users’ needs in the design process. These needs are as well functional as hedonic. Designing products requires then to design hedonic properties affecting users’ perception. For sport products, people wants to improve their performances while maintaining their health. Sport products are then considered not only “sporty” but also “healthy”. Thus, integrating both health and sport expectations into the design process are necessary.

Last decades, Affective Engineering was developed to integrate perception into the design process. Applying this approach for sport products may allow defining and mixing sport and health perceptual characteristics all along the design process. However, defining these characterisitics into requirements implies to translate them into semantic terms. If we observe semantic descriptors for sport products and for health products, they seem opposite. In this paper, we aim defining a semantic space representative and respectful of both domains, sport and health, while they oppose.
Explore User Behaviour in Semi-autonomous Driving
Authors: Shi Yuan , Maskani Jeyhoon , Caruso Giandomenico , Bordegoni Monica
Published: July 2019

The control shifting between a human driver and a semi-autonomous vehicle is one of the most critical scenarios in the road-map of autonomous vehicle development. This paper proposes a methodology to study driver's behaviour in semi-autonomous driving with physiological-sensors-integrated driving simulators. A virtual scenario simulating take-over tasks has been implemented. The behavioural profile of the driver has been defined analysing key metrics collected by the simulator namely lateral position, steering wheel angle, throttle time, brake time, speed, and the take-over time. In addition, heart rate and skin conductance changes have been considered as physiological indicators to assess cognitive workload and reactivity. The methodology has been applied in an experimental study which results are crucial for taking insights on users’ behaviour. Results show that individual different driving styles and performance are able to be distinguished by calculating and elaborating the data collected by the system. This research provides potential directions for establishing a method to characterize a driver's behaviour in a semi-autonomous vehicle.
Optimization of the Sound of Electric Vehicles According to Unpleasantness and Detectability
Authors: Petiot Jean-François , Legeay Killian , Lagrange Mathieu
Published: July 2019

Electric Vehicles (EVs) are very quite at low speed, which can be hazardous for pedestrians. It is necessary to add warning sounds but this can represent an annoyance if they are poorly designed. On the other hand, they can be not enough detectable because of the masking effect due to the background noise. In this paper, we propose a method for the design of EV sounds that takes into account in the same time detectability and unpleasantness. It is based on user tests and implements Interactive Genetic Algorithms (IGA) for the optimization of the sounds. Synthesized EV sounds, based on additive synthesis and filtering, are proposed to a set of participants during a hearing test. An experimental protocol is proposed for the assessment of the detectability and the unpleasantness of the EV sounds. After the convergence of the method, sounds obtained with the IGA are compared to different sound design proposals. Results show that the quality of the sounds designed by the IGA method is significantly higher than the design proposals, validating the relevance of the approach.
Educate for Technological Innovation
Authors: Smulders Frido , Broekhans Bertien , Kamp Aldert , Hellendoorn Hans , Welleman Hans
Published: July 2019

At Polytechnics design & engineering students are taught about state-of-the-art technical knowledge. Students become qualified engineers and learn to innovate artifacts related to their domain.

Not taught is how to develop new engineering knowledge within a multidisciplinary context of stakeholders, companies and regulations. In short, students don't learn to innovate technology. What is taught today is the result of a technological innovation of yesterday. This is not sufficient for industry to innovatively deal with society's grand challenges.

The paper describes a project that aims to educate all TU Delft graduate students in the verb of innovating technology, that is, the development of new technologies from inventions in the labs to full- fledged application in business. Such along three dimensions: technical, human and business.

The educational portfolio consists of three modules in line with growth along Bloom's taxonomy and online materials on theoretical backbones. All modules apply the notion of technological innovation journeys (Tijo's). Tijo's are rich descriptions of the developmental journey of new technology and are based on inventions from the university's own labs.
The ‘Responsibility’ Factor in Imagining the Future of Education in China
Authors: De Vos Ellen , Xin Xin , De Marez Lieven , Emmanouil Marina
Published: July 2019

Design and creativity have been a considerable force for improving life conditions. A lot of effort has been invested in explaining the design process and creativity mainly through the design thinking methodology, but design accountability and responsible actions in the design process are, yet, to be fully explored. The concept of design ethics is now increasingly scrutinized on both the level of business organization and of the individual designer. A 4-day design workshop that involved creativity techniques provided the base to explore responsibility in the fuzzy front end of the design process. The future of education in 2030 was defined as the workshop's theme and fifty-six students from China were asked to create detailed alternative scenarios. A number of imagination exercises, implementation of technological innovations and macro-environment evolutions employed in the workshop are discussed. The aim was to incite moral and responsible actions among students less familiar with creative educational contexts of student-led discovery and collaborative learning. This paper reflects on the use of creativity methods to stimulate anticipation in (non)design students.
Understanding Inclusive Design Education
Authors: Wilson Nicky , Thomson Avril , Thomson Angus , Holliman Alexander Freddie
Published: July 2019

There is a need for responsible engineering design to accommodate the diverse user requirements that come with the global phenomenon of population ageing. Inclusive design can address these diverse requirements through the consideration of a wide diversity of user needs within the design process. However, uptake of inclusive design in industry is limited, with designer awareness of the approach and its associated methods and tools noted as barriers to its uptake. This research aims to understand the current approach to inclusive design education within UK Higher Education Institutions, utilising interviews with design educators and a student survey. The study concluded that teaching of inclusive design varied between institutions with conflicting responses from academics and students relating to the methodologies taught. This study recommends that greater transparency should be encouraged between institutions to encourage the development of a cohesive inclusive design education strategy, in addition to the development of a framework to aid the implementation of appropriate inclusive methods and tools within the design process.
University Education in Additive Manufacturing and the Need to Boost Design Aspects
Authors: Borgianni Yuri , Maccioni Lorenzo , Russo Spena Pasquale , Shunmugavel Manikanda Kumar
Published: July 2019

Additive Manufacturing (AM) is a potentially revolutionary technique in industry with claims of high skills shortage in the recent days. It is assumed that full exploitation of AM capabilities can be made possible by a paradigm shift steered by engineering design. Future generations of engineers might benefit from Design for Additive Manufacturing (DfAM), which targets AM potential and enables design freedoms. In this context, the paper investigates AM education for a better understanding of the main AM-related subjects taught in universities. To this scope, the authors gathered 52 syllabi of courses taught in highly-ranked technical universities worldwide that relate to AM. From the investigation, it emerges that AM is the core discipline of the course in 42 out of 52 cases and considered widely as an independent domain to date. As for taught subjects, it was found that design aspects in AM and DfAM are poorly focused on, while manufacturing and process areas are the most popular. This poses a challenge especially to the design community, as the current situation might limit the exploitation of AM capabilities.
A Method for Analyzing the Influence of Process and Design Parameters on the Build Time of Additively Manufactured Components
Authors: Hallmann Martin , Schleich Benjamin , Wartzack Sandro
Published: July 2019

When using additive manufacturing processes, the choice of the numerous settings for the process and design parameters significantly influences the build and production time. To reduce the required build time, it is useful to adapt the parameters with the greatest influence. However, since the contribution of the individual parameters is not readily apparent, a sensible choice of process and design parameters can become a challenging task.

Thus, the following article presents a method, that enables the product developer to determine the main contributors to the required build time of additively manufactured products. By using this sensitivity analysis method, the contributors of the individual parameters can be analyzed for a given parametrized CAD model with the help of an analysis-based build time estimation approach. The novelty of the contribution can be found in providing a method that allows studying both design and process parameters simultaneously, taking the machine to be used into account. The exemplary application of the presented method to a sample part manufactured by Fused Deposition Modeling demonstrates its benefits and applicability.
Additive Manufacturing of Heterogeneous Lattice Structures: An Experimental Exploration
Authors: Leonardi Francesco , Graziosi Serena , Casati Riccardo , Tamburrino Francesco , Bordegoni Monica
Published: July 2019

3D printed heterogeneous lattice structures are beam-and-node based structures characterised by a variable geometry. This variability is obtained starting from a periodic structure and modifying the relative density of the unit cells or by combining unit cells having different shapes. While several consolidated design approaches are described to implement the first approach, there are still computational issues to be addressed to combine different cells properly. In this paper, we describe a preliminary experimental study focused on exploring the design issues to be addressed as well as the advantages that this second type of heterogeneous structures could provide. The Three-Point-Bending test was used to compare the behaviour of different types of heterogeneous structures printed using the Fused Deposition Modeling (FDM) technology. Results demonstrated that the possibility of combining multiple unit cells represents a valid strategy for performing a more effective tuning of the material distribution within the design space. However, further studies are necessary to explore the behaviour of these structures and develop guidelines for helping designers in exploiting their potential.
Decision Support for Re-Designed Medicinal Products - Assessing Consequences of a Customizable Product Design on the Value Chain from a Sustainability Perspective
Authors: Siiskonen Maria , Watz Matilda , Malmqvist Johan , Folestad Staffan
Published: July 2019

Despite advances in pharmacological research providing means for individually customized patient attribute treatments, the 'one-size-fits-all' paradigm remains. Customization is associated with cost increases and the value assessment of customized medicinal products shows upon a narrow economic focus. Inspired by value models, emerging in manufacturing industry research, this study suggests a novel methodology encompassing a full sustainability perspective, including the social, economic and ecological dimension, for design decision support for medicinal products. A concept screening matrix is adapted, using sustainability criteria as value indicators. The focus is to create value for the whole pharmaceutical value chain whilst keeping the core purpose of medicinal products, i.e. to bring societal benefits. An illustrative case study presents an application of the methodology on a commercial product for curing hypertension. The traditional product design for hypertension treatment is compared to a customized product design. Results indicate that a customized product design is preferable if value is to be created from a social or/and an ecological sustainability perspective.
Design Supporting a ‘Customer-Perceived Intimacy’-Strategy in Healthcare Services
Authors: Martens Carmen , Herssens Jasmien , Delcourt Cécile
Published: July 2019

Given that we live in a time within a growing competitive healthcare market, the customer experience and healing opportunities are on top of the priority list. However, little attention has been dedicated on how to merge the disciplines of architecture, healthcare and management to create healthcare environments to enhance the customer experience and the healing process. The goal of this paper is to explore how design can foster customer-perceived intimacy within a healthcare context to achieve enhanced customer outcomes, such as customer well-being. Understanding the importance of customer- perceived intimacy is paramount, as customers are constantly exposed to intimate situations. The study suggest that there is potential for such situations to be wrought with problems involving complexities associated with human cognition, emotions, physiological responses, and behaviors. A literature review is undertaken to highlight the antecedents and the short-term and long-term outcomes of customer- perceived intimacy. As a result, the paper provides a conceptual framework that raises many questions that need to be answered. In doing so, a solid foundation for future inquiry has been laid.
Designing for Better Healthcare: A Systemic Approach Utilising Behavioural Theory, Technology and an Understanding of Healthcare Delivery Systems
Authors: Ciccone Nicholas W , Patou François , Maier Anja M
Published: July 2019

An ageing population leading to more chronic disease is straining healthcare systems. This paper makes two core contributions to healthcare systems design research: Firstly, a systemic techno-behavioural approach is presented to support intervention design with value-effective health outcomes. The systemic techno-behavioural perspective takes into consideration the interaction between three angles: The current healthcare system in place, the technological opportunities for addressing an issue and a broader and deeper understanding of the behaviour of those involved. The purpose of considering these three angels is to create interventions that are more robust. This will help inform healthcare systems design researchers and other stakeholders. Secondly, it is proposed that interventions should be grounded in behavioural theory, a collection of theories are presented to be incorporated in the design process of interventions. The systemic techno-behavioural approach is applied to dementia care highlighting the need to understand the dynamic relationship between the context of the current healthcare delivery system, technology, and behaviour to improve quality of care during the progression of the disease.
Female Merchants? Women, Debt, and Trade in Later Medieval England, 1266–1532
Authors: Goddard Richard
Published: July 2019

This article examines English women who were engaged in wholesale long-distance or international trade in the later Middle Ages. These women made up only a small proportion of English merchants, averaging about 3 to 4 percent of the mercantile population, often working in partnership with their husbands. The article systematically quantifies, for the first time, women's penetration into this male-dominated trade and adds new perspectives to our understanding of women and trade in the Middle Ages by using both debt and customs records. It poses important questions about women's economic roles, the nature or distinctiveness of their businesses, and the ways that their actions fitted within mercantile activity more broadly. It examines the extent to which wives acted as equal economic partners with their husbands and also assesses the extent to which women's economic potential or agency in wholesale trade was shaped, or indeed constrained, by economic and patriarchal forces. It concludes by arguing that patriarchy certainly limited female access to wholesale markets, particularly after 1300, along with other linked features that also shaped women's economic trading endeavors. These features included status, access to capital, and the advantages to working within dynamic, extensive, and busy markets such as those found in later medieval London.
A Nova Scotia Scheme and the Imperial Politics of Ulster Emigration
Authors: Dunagin Amy
Published: July 2019

Early in 1761, a land promoter of Ulster origin named Alexander McNutt brought before the British Board of Trade a proposal to settle several thousand Ulster Scots in Nova Scotia. The board enthusiastically approved, but when McNutt returned the following year with promising news, the board forbade him from continuing the scheme, citing fears of losing Protestants in Ireland. This episode has generally been explained as evidence of the British government's ambivalence about Ulster emigration. However, rather than expressing merely a tension between two equally desirable but conflicting goals—peopling the American colonies with Irish Protestants and protecting the Ascendancy by preventing their emigration—the board's change of mind reflected the changing political environment. The board that approved McNutt's scheme strongly favored settling Nova Scotia quickly; the board that shut it down a year later included new members who viewed settling Nova Scotia as a waste of precious funds. The case of Alexander McNutt demonstrates the profound ramifications of party politics for Ulster migration during the imperial crisis of the 1760s and 1770s. It further affirms that studies of Ulster migration must be imperial in scope.
Landscapes of Internment: British Prisoner of War Camps and the Memory of the First World War
Authors: Grady Tim
Published: July 2019

During the First World War, all of the belligerent powers interned both civilian and military prisoners. In Britain alone, over one hundred thousand people were held behind barbed wire. Despite the scale of this enterprise, interment barely features in Britain's First World War memory culture. By exploring the place of prisoner-of-war camps within the “militarized environment” of the home front, this article demonstrates the centrality of internment to local wartime experiences. Forced to share the same environment, British civilians and German prisoners clashed over access to resources, roads, and the surrounding landscape. As this article contends, it was only when the British started to employ prisoners on environmental-improvement measures, such as land drainage or river clearance projects, that relations gradually improved. With the end of the war and closure of the camps, however, these deep entanglements were quickly forgotten. Instead of commemorating the complexities of the conflict, Britain's memory culture focused on more comfortable narratives; British military “sacrifice” on the Western Front quickly replaced any discussion of the internment of the “enemy” at home.
Wake behind a three-dimensional dry transom stern. Part 1. Flow structure and large-scale air entrainment
Authors: Hendrickson Kelli , Weymouth Gabriel D. , Yu Xiangming , Yue Dick K.-P.
Published: July 2019

We present high-resolution implicit large eddy simulation (iLES) of the turbulent air-entraining flow in the wake of three-dimensional rectangular dry transom sterns with varying speeds and half-beam-to-draft ratios $B/D$. We employ two-phase (air/water), time-dependent simulations utilizing conservative volume-of-fluid (cVOF) and boundary data immersion (BDIM) methods to obtain the flow structure and large-scale air entrainment in the wake. We confirm that the convergent-corner-wave region that forms immediately aft of the stern wake is ballistic, thus predictable only by the speed and (rectangular) geometry of the ship. We show that the flow structure in the air–water mixed region contains a shear layer with a streamwise jet and secondary vortex structures due to the presence of the quasi-steady, three-dimensional breaking waves. We apply a Lagrangian cavity identification technique to quantify the air entrainment in the wake and show that the strongest entrainment is where wave breaking occurs. We identify an inverse dependence of the maximum average void fraction and total volume entrained with $B/D$. We determine that the average surface entrainment rate initially peaks at a location that scales with draft Froude number and that the normalized average air cavity density spectrum has a consistent value providing there is active air entrainment. A small parametric study of the rectangular geometry and stern speed establishes and confirms the scaling of the interface characteristics with draft Froude number and geometry. In Part 2 (Hendrikson & Yue, J. Fluid Mech., vol. 875, 2019, pp. 884–913) we examine the incompressible highly variable density turbulence characteristics and turbulence closure modelling.
A Viscoelastic-Plastic Constitutive Model of Shape Memory Polymer
Authors: Zheng Xueyao , Zhou Bo , Xue Shifeng
Published: July 2019

It is of practical significance to develop a constitutive model which is able to predict the thermomechanical behaviors of the shape memory effect occurring in a shape memory polymer (SMP) accurately. The mechanism of shape memory effect of SMP is explained based on the assumption that SMP is composed by two phases, reversible phase and stationary phase. Especially the different flow elements are respectively added to the reversible phase and stationary phase in order to express the plastic behavior of SMP. There are two springs in series, one dashpot and one flow element in the reversible phase. There are two springs in parallel, one dashpot and one flow element in the stationary phase. A constitutive equation is developed to express the thermo-mechanical behaviors of shape memory effect in the SMP based on viscous-elastic mechanics and plastic theory. An internal variable, frozen ratio, is defined to follow the shape memory process in SMP, and the material properties are described as the functions of frozen ratio based on phase transition theorem. The developed constitutive model, which includes above constitutive equation and material parameter functions, is used to numerically simulate the thermo-mechanical behaviors of SMP under various load cycles. Results show that the developed constitutive model can not only predict the shape memory process of SMP accurately, but also express the rate-dependent behaviors of SMP effectively.
La morphologie du conservatisme américain à l’ère Trump
Authors: Fournier Philippe
Published: July 2019

Cet article vise à identifier et analyser les idées qui ont accompagné l’émergence et la victoire de Donald Trump. Nous nous intéressons tout particulièrement au paléoconservatisme, un courant idéologique jusque-là méconnu, qui a néanmoins su articuler les frustrations et aspirations d'une partie importante de l’électorat américain. Critique des élites économiques et politiques associées aux deux grands partis, le paléoconservatisme prône un nationalisme identitaire qui menace de bouleverser l’équilibre déjà fragile entre les variantes libertarienne et socialement conservatrice qui dominent au Parti républicain depuis quelques décennies.
Pre-training with non-expert human demonstration for deep reinforcement learning
Authors: de la Cruz Gabriel V. , Du Yunshu , Taylor Matthew E.
Published: July 2019

Deep reinforcement learning (deep RL) has achieved superior performance in complex sequential tasks by using deep neural networks as function approximators to learn directly from raw input images. However, learning directly from raw images is data inefficient. The agent must learn feature representation of complex states in addition to learning a policy. As a result, deep RL typically suffers from slow learning speeds and often requires a prohibitively large amount of training time and data to reach reasonable performance, making it inapplicable to real-world settings where data are expensive. In this work, we improve data efficiency in deep RL by addressing one of the two learning goals, feature learning. We leverage supervised learning to pre-train on a small set of non-expert human demonstrations and empirically evaluate our approach using the asynchronous advantage actor-critic algorithms in the Atari domain. Our results show significant improvements in learning speed, even when the provided demonstration is noisy and of low quality.
Pathways to social-emotional functioning in the preschool period: The role of child temperament and maternal anxiety in boys and girls
Authors: Behrendt Hannah F. , Wade Mark , Bayet Laurie , Nelson Charles A. , Bosquet Enlow Michelle
Published: July 2019

Individual differences in social-emotional functioning emerge early and have long-term implications for developmental adaptation and competency. Research is needed that specifies multiple early risk factors and outcomes simultaneously to demonstrate specificity. Using multigroup longitudinal path analysis in a sample of typically developing children (N= 541), we examined child temperament dimensions (surgency, negative affectivity, and regulation/effortful control) and maternal anxiety in infancy and age 2 as predictors of child externalizing, internalizing, dysregulation, and competence behaviors at age 3. Four primary patterns emerged. First, there was stability in temperament dimensions and maternal anxiety from infancy to age 3. Second, negative affectivity was implicated in internalizing problems and surgency in externalizing problems. Third, effortful control at age 2 was a potent mediator of maternal anxiety in infancy on age 3 outcomes. Fourth, there was suggestive evidence for transactional effects between maternal anxiety and child effortful control. Most pathways operated similarly for boys and girls, with some differences, particularly for surgency. These findings expand our understanding of the roles of specific temperamental domains and postnatal maternal anxiety in a range of social-emotional outcomes in the preschool period, and have implications for efforts to enhance the development of young children's social-emotional functioning and reduce risk for later psychopathology.
Methods for overcoming barriers in palliative care for ethnic/racial minorities: a systematic review
Authors: Mayeda Donna P. , Ward Katherine T.
Published: July 2019

Objectives

Ethnic/racial minority groups are less likely to discuss issues involving end-of-life treatment preferences and utilize palliative care or hospice services. Some barriers may be differences in language, religion, lower levels of health literacy, or less access to healthcare services and information. The purpose of this article is to conduct a systematic review on interventional studies that investigated methods to overcome the barriers faced by ethnic/racial minorities when accessing end-of-life services, including completing advanced directives, accepting palliative care, and enrolling in hospice.

Methods

Literature searches using four standard scientific search engines were conducted to retrieve articles detailing original research in an interventional trial design. All studies were conducted in an outpatient setting, including primary care visits, home visits, and dialysis centers. Target populations were those identified from ethnic or racial minorities.

Results

Nine articles were selected to be included in the final review. All were full-text English language articles, with target populations including African Americans, Hispanic or Latinos, and Asian or Pacific Islanders. Measured outcomes involved level of comfort in discussing and knowledge of palliative care services, desire for aggressive care at the end-of-life, completion of advance directives, and rate of enrollment in hospice.

Significance of Results

Three main avenues of interventions included methods to enhance patient education, increase access to healthcare, or improve communication to establish better rapport with target population. Studies indicate that traditional delivery of healthcare services may be insufficient to recruit patients from ethnic/racial minorities, and outcomes can be improved by implementing tailored interventions to overcome barriers.
From norms to normative configurations: a pragmatist and relational approach to theorizing normativity in IR
Authors: Pratt Simon Frankel
Published: July 2019

Normativity matters in international politics, but IR scholarship will benefit from de-reifying ‘norms’ as units into a relational, configurational alternative. The alternative I propose here is the ‘normative configuration’: an arrangement of ongoing, interacting practices establishing action-specific regulation, value-orientation, and avenues of contestation. This responds to recent constructivist scholarship, particularly from relational sociology and practice theory, that implies the need for ontological and analytical alternatives to ‘norms’ as central concepts responsible for establishing rules, institutions, and values in social life. I offer a way of conceptualizing and analyzing normativity consistent with these alternative approaches. Namely, I have brought together a pragmatist theory of action with the social theories of a number of key relational social theorists and philosophers, oriented around a reading of what norms-talk actually does for social enquiry. I then outline a three stage process – de-reification, attributing agency, and tracing transactions – that allows scholars to study transformations in normative configurations. Finally, I discuss what this contributes to the recent turns toward practices and relations, as the latest direction in constructivist scholarship within the discipline.
Treating Colloids as Clusters Better Predicts Their Behavior
Authors: Cook Terri
Published: July 2019

New research suggests that an accurate prediction of colloidal particle mobilization in the environment should account for the effect of clustering.