Improving DPA and DFA resistance of circuits using asynchronous logic

International audience

Fashion design research : research methodologies for emerging researchers [Abstract]

This paper attempts to address some fundamental issues faced by new and emerging researchers in the discipline of Fashion design. A culture of patchwork research methodology appears to have become the norm in an attempt to ‘fit’ fashion design research into an academic paradigm for the examination of readers from more traditional research fields such as Arts, Humanities, Science and Philosophy. Two key questions are discussed here; is it appropriate for fashion researchers to adopt and adapt existing research methodologies to find a scholarly, academic voice? Secondly; do these methodologies enable fashion design research to be effectively disseminated to professionals and fellow researchers within the discipline of fashion design?

Manufacturing System Simulation & Human Robot Interaction in VR:Manufacturing system simulation: Methodologies, software tools, case study in transportation design

Virtual Reality techniques are relatively new, having experienced significant development only during the last few years, in accordance with the progress achieved by computer science and hardware and software technologies. The study of such advanced design systems has led to the realization of an immersive environment in which new procedures for the evaluation of product prototypes, ergonomics and manufacturing operations have been simulated. The application of the environment realized to robotics, ergonomics, plant simulations and maintainability verifications has allowed us to highlight the advantages offered by a design methodology: the possibility of working on the industrial product in the first phase of conception; of placing the designer in front of the virtual reproduction of the product in a realistic way; and of interacting with the same concept. The aim of this book is to present an updated vision of VM through different aspects. We will describe the trends and results achieved in the automotive, aerospace and railway fields, in terms of the Digital Product Creation Process to design the product and the manufacturing process.

Methodologies for the generation of design summer years for building energy simulation using UKCP09 probabilitic climate projections

Design summer years representing near-extreme hot summers have been used in the United Kingdom for the evaluation of thermal comfort and overheating risk. The years have been selected from measured weather data basically representative of an assumed stationary climate. Recent developments have made available ‘morphed’ equivalents of these years by shifting and stretching the measured variables using change factors produced by the UKCIP02 climate projections. The release of the latest, probabilistic, climate projections of UKCP09 together with the availability of a weather generator that can produce plausible daily or hourly sequences of weather variables has opened up the opportunity for generating new design summer years which can be used in risk-based decision-making. There are many possible methods for the production of design summer years from UKCP09 output: in this article, the original concept of the design summer year is largely retained, but a number of alternative methodologies for generating the years are explored. An alternative, more robust measure of warmth (weighted cooling degree hours) is also employed. It is demonstrated that the UKCP09 weather generator is capable of producing years for the baseline period, which are comparable with those in current use. Four methodologies for the generation of future years are described, and their output related to the future (deterministic) years that are currently available. It is concluded that, in general, years produced from the UKCP09 projections are warmer than those generated previously. Practical applications: The methodologies described in this article will facilitate designers who have access to the output of the UKCP09 weather generator (WG) to generate Design Summer Year hourly files tailored to their needs. The files produced will differ according to the methodology selected, in addition to location, emissions scenario and timeslice.

Design and development of new green catalytic methodologies for the synthesis of enantiomerically enriched molecules

The following Ph.D work was mainly focused on catalysis, as a key technology, to achieve the objectives of sustainable (green) chemistry. After introducing the concepts of sustainable (green) chemistry and an assessment of new sustainable chemical technologies, the relationship between catalysis and sustainable (green) chemistry was briefly discussed and illustrated via an analysis of some selected and relevant examples. Afterwards, as a continuation of the ongoing interest in Dr. Marco Bandini’s group on organometallic and organocatalytic processes, I addressed my efforts to the design and development of novel catalytic green methodologies for the synthesis of enantiomerically enriched molecules. In the first two projects the attention was focused on the employment of solid supports to carry out reactions that still remain a prerogative of omogeneous catalysis. Firstly, particular emphasis was addressed to the discovery of catalytic enantioselective variants of nitroaldol condensation (commonly termed Henry reaction), using a complex consisting in a polyethylene supported diamino thiopene (DATx) ligands and copper as active species. In the second project, a new class of electrochemically modified surfaces with DATx palladium complexes was presented. The DATx-graphite system proved to be efficient in promoting the Suzuki reaction. Moreover, in collaboration with Prof. Wolf at the University of British Columbia (Vancouver), cyclic voltammetry studies were reported. This study disclosed new opportunities for carbon–carbon forming processes by using heterogeneous, electrodeposited catalyst films. A straightforward metal-free catalysis allowed the exploration around the world of organocatalysis. In fact, three different and novel methodologies, using Cinchona, Guanidine and Phosphine derivatives, were envisioned in the three following projects. An interesting variant of nitroaldol condensation with simple trifluoromethyl ketones and also their application in a non-conventional activation of indolyl cores by Friedel-Crafts-functionalization, led to two novel synthetic protocols. These approaches allowed the preparation of synthetically useful trifluoromethyl derivatives bearing quaternary stereocenters. Lastly, in the sixth project the first γ-alkylation of allenoates with conjugated carbonyl compounds was envisioned. In the last part of this Ph.D thesis bases on an extra-ordinary collaboration with Prof. Balzani and Prof. Gigli, I was involved in the synthesis and characterization of a new type of heteroleptic cyclometaled-Ir(III) complexes, bearing bis-oxazolines (BOXs) as ancillary ligands. The new heteroleptic complexes were fully characterized and in order to examine the electroluminescent properties of FIrBOX(CH2), an Organic Light Emitting Device was realized.

A discussion of weather normalization methodologies in utility rate design /

"July 1984."

Methodologies for investigating relationships between concept development and the development of problem solving abilities

This paper is the second in a pair that Lesh, English, and Fennewald will be presenting at ICME TSG 19 on Problem Solving in Mathematics Education. The first paper describes three shortcomings of past research on mathematical problem solving. The first shortcoming can be seen in the fact that knowledge has not accumulated – in fact it has atrophied significantly during the past decade. Unsuccessful theories continue to be recycled and embellished. One reason for this is that researchers generally have failed to develop research tools needed to reliably observe, document, and assess the development of concepts and abilities that they claim to be important. The second shortcoming is that existing theories and research have failed to make it clear how concept development (or the development of basic skills) is related to the development of problem solving abilities – especially when attention is shifted beyond word problems found in school to the kind of problems found outside of school, where the requisite skills and even the questions to be asked might not be known in advance. The third shortcoming has to do with inherent weaknesses in observational studies and teaching experiments – and the assumption that a single grand theory should be able to describe all of the conceptual systems, instructional systems, and assessment systems that strongly molded and shaped by the same theoretical perspectives that are being used to develop them. Therefore, this paper will describe theoretical perspectives and methodological tools that are proving to be effective to combat the preceding kinds or shortcomings. We refer to our theoretical framework as models & modeling perspectives (MMP) on problem solving (Lesh & Doerr, 2003), learning, and teaching. One of the main methodologies of MMP is called multi-tier design studies (MTD).

Fast reconstruction of aerodynamic shapes using evolutionary algorithms and virtual Nash strategies in a CFD design environment

This paper compares the performances of two different optimisation techniques for solving inverse problems; the first one deals with the Hierarchical Asynchronous Parallel Evolutionary Algorithms software (HAPEA) and the second is implemented with a game strategy named Nash-EA. The HAPEA software is based on a hierarchical topology and asynchronous parallel computation. The Nash-EA methodology is introduced as a distributed virtual game and consists of splitting the wing design variables - aerofoil sections - supervised by players optimising their own strategy. The HAPEA and Nash-EA software methodologies are applied to a single objective aerodynamic ONERA M6 wing reconstruction. Numerical results from the two approaches are compared in terms of the quality of model and computational expense and demonstrate the superiority of the distributed Nash-EA methodology in a parallel environment for a similar design quality.

The carrying capacity imperative : assessing regional carrying capacity methodologies for sustainable land-use planning

The global impact of an ever-increasing population-base combined with dangerously depleted natural resources highlights the urgent need for changes in human lifestyles and land-use patterns. To achieve more equitable and sustainable land use, it is imperative that populations live within the carrying capacity of their natural assets in a manner more accountable to and ethically responsible for the land which sustains them. Our society’s very survival may well depend on worldwide acceptance of the carrying capacity imperative as a principle of personal, political, economic, educational and planning responsibility. This theoretically-focused research identifies, examines and compares a range of methodological approaches to carrying capacity assessment and considers their relevance to future spatial planning. It also addresses existing gaps in current methodologies and suggests avenues for improvement. A set of eleven key criteria are employed to compare various existing carrying capacity assessment models. These criteria include whole-systems analysis, dynamic responses, levels of impact and risk, systemic constraints, applicability to future planning and the consideration of regional and local boundary delineation. This research finds that while some existing methodologies offer significant insights into the assessment of population carrying capacities, a comprehensive model is yet to be developed. However, it is suggested that by combining successful components from various authors, and collecting a range of interconnected data, a practical and workable systems-based model may be achievable in the future.

Using a design led disruptive innovation approach to develop new services : practising innovation in times of discontinuity

Organisations face increasing competition from new firms in emerging markets and their past superior products may no longer provide competitive advantage in markets based on different cost and value differentials. A shift in design practices from product solutions to health services which are accessible and affordable by all is required. This paper explores a design led approach to innovation to assist medical device companies develop new services and experiences and reshape their notions of the nature, development and deployment of health care services. This approach uses design tools and methodologies that are grounded in the authentic understandings of stakeholder experiences, to assist an organisation create a vision of likely future health care scenarios. Through this process, organisations can explore the complexities in the delivery of future health care services in new and emerging markets allowing them to tailor product and service solutions which focus on being accessible and affordable by all. The industry based case study for the design of health services in carried out in emerging economies. The contribution of this work in advancing research into design innovation and future research directions are also presented.

The comparison of international and local sustainable assessment tools of landscape design for housing estate developments : case of Bangkok Metropolitan Region, Thailand

Various countries have been introducing sustainable assessment tools for real estate design to produce integrated sustainability components not just for the building, but also the landscape component of the development. This paper aims to present the comparison between international and local assessment tools of landscape design for housing estate developments in Bangkok Metropolitan Region (BMR), Thailand. The methodologies used are to review, then compare and identify discrepancy indicators among the tools. This paper will examine four international tools; LEED for Neighbourhood Development (LEED – ND) of United State of America (USA), EnviroDevelopment standards of Australia, Residential Landscape Sustainability of United Kingdom (UK) and Green Mark for Infrastructure of Singapore; and three BMR’s existing tools; Land Subdivision Act B.E. 2543, Environmental Impact Assessment Monitoring Awards (EIA-MA) and Thai’s Rating for Energy and Environmental Sustainability of New construction and major renovation (TREES-NC). The findings show that there are twenty two elements of three categories which are neighbourhood design, community management, and environmental condition. Moreover, only one element in neighbourhood designs different between the international and local tools. The sustainable assessment tools have existed in BMR but they are not complete in only one assessment tool. Thus, the development of new comprehensive assessment tool will be necessary in BMR; however, it should meet the specific environment and climate condition for housing estate development at BMR.

Ways of telling : research methodology for fashion textiles design

Research methodology in the discipline of Art & Design has been a topic for much debate in the academic community. The result of such avid and ongoing discussion appears to be a disciplinary obsession with research methodologies and a culture of adopting and adapting existing methodologies from more established disciplines. This has eventuated as a means of coping with academic criticism and as an attempt to elevate Art & Design to a ‘real academic status’. Whilst this adoption has had some effect in tempering the opinion of Art & Design research from more ‘serious’ academics the practice may be concealing a deeper problem for this discipline. Namely, that knowledge transfer within creative practice, particularly in fashion textiles design practice, is largely tacit in nature and not best suited to dissemination through traditional means of academic writing and publication. ----- ----- There is an opportunity to shift the academic debate away from appropriate (or inappropriate) use of methodologies and theories to demonstrate the existence (or absence) of rigor in creative practice research. In particular, the changing paradigms for the definitions of research to support new models for research quality assessment (such as the RAE in the United Kingdom and ERA in Australia) require a re-examination of the traditions of academic writing and publication in relation to this form of research. It is now appropriate to test the limits of tacit knowledge. It has been almost half a century since Michael Polanyi wrote “we know more than we can tell” (Polanyi, 1967 p.4) at a time when the only means of ‘telling’ was through academic writing and publishing in hardcopy format. ----- ----- This paper examines the academic debate surrounding research methodologies for fashion textiles design through auto-ethnographic case study and object analysis. The author argues that, while this debate is interesting, the focus should be to ask: are there more effective ways for creative practitioner researchers to disseminate their research? The aim of this research is to examine the possibilities of developing different, more effective methods of ‘telling’ to support the transfer of tacit knowledge inherent in the discipline of Fashion Textiles Design.