Mapping customer needs to engineering characteristics: an aerospace perspective for conceptual design

Designing complex engineering systems, such as an aircraft or an aero-engine, is immensely challenging. Formal Systems Engineering (SE) practices are widely used in the aerospace industry throughout the overall design process to minimise the overall design effort, corrective re-work, and ultimately overall development and manufacturing costs. Incorporating the needs and requirements from customers and other stakeholders into the conceptual and early design process is vital for the success and viability of any development programme. This paper presents a formal methodology, the Value-Driven Design (VDD) methodology that has been developed for collaborative and iterative use in the Extended Enterprise (EE) within the aerospace industry, and that has been applied using the Concept Design Analysis (CODA) method to map captured Customer Needs (CNs) into Engineering Characteristics (ECs) and to model an overall ‘design merit’ metric to be used in design assessments, sensitivity analyses, and engineering design optimisation studies. Two different case studies with increasing complexity are presented to elucidate the application areas of the CODA method in the context of the VDD methodology for the EE within the aerospace secto

The environmental effect of car-free housing: A case in Vienna

A case-control study of the car-free model housing project in Vienna was conducted to evaluate whether people living in this settlement have more [`]sustainable lifestyles' than people living in comparable buildings in Vienna. Another aim was to identify the lifestyle characteristics and household activities which significantly influence the environmental impact of the residents of the car-free housing project and a control group. The control group, referred to as the reference settlement, was chosen from a nearby building complex, with similar characteristics, but without the car-free feature. Household consumption patterns were estimated based on interviews in combination with data from the Austrian consumer expenditure survey and the national accounts. The evaluation of household environmental impacts uses emissions estimates from the Austrian national accounting matrices including environmental accounts and data from life-cycle assessments. Households from the car-free settlement have substantially lower environmental impacts in the categories of ground transportation and energy use; their CO2 emissions of these two categories are less than 50% of those living in the reference settlement. The households in the car-free settlement have somewhat higher emissions in the categories air transport, nutrition, and [`]other' consumption, reflecting the higher income per-capita. As a result, the CO2 emissions are only slightly lower than in the reference settlement, but the emissions intensity is 20% lower. Both household groups have significantly lower environmental impacts than the Austrian average reflecting less car use and cleaner heating energy in Vienna

A Framework for Integrating Transportation Into Smart Cities

In recent years, economic, environmental, and political forces have quickly given rise to “Smart Cities” -- an array of strategies that can transform transportation in cities. Using a multi-method approach to research and develop a framework for smart cities, this study provides a framework that can be employed to: Understand what a smart city is and how to replicate smart city successes; The role of pilot projects, metrics, and evaluations to test, implement, and replicate strategies; and Understand the role of shared micromobility, big data, and other key issues impacting communities. This research provides recommendations for policy and professional practice as it relates to integrating transportation into smart cities

Using ClassCraft to Improve Primary School Students´ Knowledge and Interest in Sustainable Mobility

ABSTARCT: Teaching students awareness about sustainable mobility has been lacking to date. There is a need to expand the themes being addressed in order to achieve a change in attitude. Society needs to design a curriculum that teaches about sustainable mobility to guarantee a better environment for future generations. This article presents the most important results of an experiment based on gamification to promote the education of sustainable mobility in primary school classrooms. This new teaching method, aimed at children aged 10?12 years old, applies non-gambling play metaphors to real-life tasks to motivate a change in attitude. The didactic approach was developed using the ClassCraft platform to create specific activities that consider the environmental, economic, and social aspects of sustainable mobility. The initial analysis revealed a perception about sustainable mobility that focused on environmental problems with very little input on the economic and social aspects. The experience has shown that by using the gamified ClassCraft tool applying structured activities about all aspects of sustainable mobility, the pupils acquired new concepts that clarified the social and economic components and began to develop a conscience about how to become an active part in behavioural change

Sustainability Factors for PSS Business Models

AbstractA fundamental change in how businesses are conducted and operated is an essential factor to reach more sustainable solutions not only on the industry level but also for the entire society. In this sense, the importance of developing and implementing sustainable product service system (S-PSS) business models is increasing as the number of studies are presenting it. A S-PSS business model is an approach to achieve benefits in the three dimensions of sustainability. Through efficient resource utilization and dematerialization, this type of sustainable business model helps to embed environmental and social aspects into strategic business goals and processes while increases competitive advantage. However, most of the studies that treats PSS business models do not mention their relation to sustainability. In addition, different studies take for granted that implementing PSS leads to benefits in the three sustainability dimensions. Nonetheless, PSS business models can even have a negative effect on the environment while maintaining only economic benefits. Such contradictions and incoherencies hinder the potential of PSS business models to provide sustainability benefits and might be a barrier for its adoption. Therefore, the question this study pursues is: What are the factors that make a PSS a sustainable business model? Through literature analysis, this paper proposes the identification of a set of factors that contributes to the sustainability of PSS business models. The factors identified are investigated in an exemplary case of a bike sharing system

Influential factors of continuing usage of bicycle sharing system among UUM students

With the development of the Internet economy, the concept of green environmental protection, low-carbon travel at home and abroad and the sharing of bicycles for timesharing projects is booming. The shared bicycle is characterized by convenience, environmental protection, affordable and suitable for short-distance travel. It is an important way to solve the “last mile” travel. However, with the rapid development of shared bicycles system, a series of problems have arisen. The phenomenon of random and uninterrupted parking can be seen everywhere. The damage of shared bicycles is serious. Some bicycle companies are facing bankruptcy, resulting in the user's deposit being unable to be returned. Therefore, whether users will continue to use shared bicycles is a realistic issue worth exploring. Based on the expectation confirmation theory of information system continuous use, combined with the characteristics of the sharing bicycle system, factors such as perceived usefulness, satisfaction, expectation confirmation, user commitment, habits, and external environment are included in the model to study the effect of various factors on the user's willingness to continue to use. The study conducted a questionnaire survey through online methods, and collected 128 valid sample data, and mainly used SPSS20.0 and Smart PLS 3.0 software to perform descriptive statistical analysis, reliability and validity test and correlation analysis to verify the theoretical model proposed in this study. Through empirical research, it is found that habit, perceived usefulness, external environment, user commitment, and satisfaction have a significant positive impact on the willingness of shared bicycle users to continue to use