538 research outputs found
Exploring the WISP Industry - Swiss Case Study
Wireless Local Area Networks (WLAN) are receiving considerable attention in the industry and are perceived as a possible disruptive technology, capable of posing a credible threat to the dominance of mobile network operators and their 3G networks. In spite of this, the business aspects of public WLANs have been neglected by the research community. The objective of this paper is thus to investigate the use of WLAN to offer wireless services from a business point of view. The study is based on the example of current supply of WLAN services in Switzerland. By investigating different kinds of WLAN service providers and analyzing their business models through mini case studies, the paper provides a deeper insight into business aspects of public WLANs. 1
Multidimensional Participation in Hybrid Wireless Communities
Wireless communities have been long considered an interesting approach to provide mobile Internet, but the key issue is whether they are able to attract and retain a critical mass of active members. It is therefore crucial to understand what motivates and dissuades people from joining and participating in them, especially with the development of mainstream 3G technologies, in order to evaluate their potential development. This paper analyzes motivations and barriers influencing participation in a large wireless community – Fon – based on a survey of 268 members. Two distinct forms of participation driven by different motivations emerge: a ‘participation by sharing’ driven by idealistic motivation and a ‘social participation’ driven by social motives and technical interest. Utilitarian motivations do not play a major role for active participation despite being crucial in attracting members to the community. Accordingly, the way hybrid wireless communities are currently designed (hardly offering occasions for a social usage experience, experimentation and with decreasing utilitarian benefits due the development of 3G technologies) is casting serious doubts about a possible potential development above the status of a niche complement to the dominant cellular technologies
Circular economy design visioning: exploring industrial and urban symbiosis in South African cities.
Doctoral Degree. University of KwaZulu-Natal, Durban.Cities of tomorrow will be at the coalface of the complex challenges posed by climate change,
e.g. resource scarcity. Climate change adaptation strategies will include circular economy (CE)
practices (e.g. industrial and urban symbiosis) to increase the rate of recycling technical nutrients,
in turn improving the resource efficiency of cities. The study investigates industrial and urban
symbiosis in South Africa. In doing so, exploring technology enabled (i.e. cyber-physical-social
ecosystems) CE solutions to designing out waste in South African cities.
One of the key contributions of the research is the comprehensive synthesis and testing of an
iterative problem structuring, theory building and design visioning (problem-theory-design)
continuum to inform CE experimentation. A mixed methods design visioning approach is
developed through an experiential and iterative design practice nested in a network of
interdisciplinary theoretical constructs: 1) philosophical construct – Ecological Literacy (systems
thinking), 2) techno-economic construct – Third Industrial Revolution (internet-of-things enabled
general purpose technology platform), and Circular Economy (industrial and urban symbiosis),
and 3) design construct – properties of Ecodesign derived from the dynamic renewable design of
natural ecosystems. The research argues that to construct a meaningful CE transition experiment,
a logical starting point is to distil key findings from a theoretically embedded case study to inform
the design of a virtual experiment and simulation sketch.
Through an embedded multiple case study approach the research investigates complex resource
recovery dynamics in two key waste economy sub-sectors; industrial waste management and
urban informal recycling sectors in the province of KwaZulu-Natal (KZN). The case studies
provide an integrated method (i.e. synthesising quantitative and qualitative knowledge) for
holistic and high-resolution problem structuring. From a systems thinking perspective, key
leverage points (i.e. data, information sharing and infrastructure) are identified for potential policy
and technology intervention. Learnings from the case studies inform policy recommendations and
CE innovation.
The findings from the industrial symbiosis (IS) case study illustrate that firms and supply chain
networks recognise the environmental importance of improving industrial waste management
practices, however they are locked-in to end-of-pipe solutions. Firms highlighted regulation, price
sensitivity, customer pressure and top management as key drivers of pro-environmental behaviour
change (e.g. waste beneficiation). The findings highlight the unrealised IS potential in the South
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Durban Basin. In addition, revealing significant barriers to IS, i.e. lack of information sharing
between firms and a weak regulatory environment. To increase the detection, matching and
emergence of IS relationships will command the dynamic co-production of codified resource flow
data; herein a big data analytics approach can be employed to construct open source platforms for
interfirm information (e.g. residual resource flows) sharing and knowledge production – an
industrial commons internet.
The urban symbiosis case study explores the informal recycling sector in KZN analysing the
instrumental role of waste pickers as primary looping agents in recovering recyclable materials
from post-consumer waste and increasing the supply of recyclable materials (e.g. cardboard,
paper, plastic and metal) in the secondary resources economy. Waste pickers are an important
link in recycling value chains; sorting, gathering and manually transporting recyclable materials
to buy-back-centres and informal collection pick up points. The case study investigates how their
efficiency can be improved to stimulate greater positive environmental impacts, create decent
employment opportunities, and reduce waste management costs for municipalities.
The findings from the case study on waste pickers are extrapolated in a CE design visioning
exercise. From a systems level perspective, the research culminates in the sketch of a virtual
circular city experiment; a cyber-physical social ecosystem (CPSE) designed to increase recycling
rates in cities by addressing the infrastructural needs of waste pickers. The hardware, software
and social ecosystem is built out of an internet-of-things (IoT) platform. Firstly, the IoT enabled
infrastructural system improves material recovery efficiencies (of post-consumer recyclable
materials) by increasing connectivity between waste pickers and waste collectors. Increased
connectivity allows for looping and aggregating material stock and flow data. Secondly, the
integrated hardware and software infrastructure provides an automated, digitised and
decentralised buy-back-transfer service – delivered through connected and solar-powered
collection nodes strategically distributed throughout the city in a mesh network configuration.
Thirdly, the digital platform aggregates big data and employs advanced analytics to generate
actionable residual resource intelligence, consequently enabling evidence-based decision making
by key stakeholders, e.g. government agencies, industry associations, recyclers and material
reprocessors. To further the research agenda, the next step is structuring a real-world transition
experiment based on the virtual circular city design experiment, defined as, the internet-of-waste
pickers (IoWP)
Exploring the potential for local end-processing of e-waste in South Africa
E-waste is one of the fastest-growing waste streams in the world, and South Africa (SA) is no exception. This is driven by increased consumer demand and access to electrical and electronic equipment, in addition to perceived equipment obsolescence, and rapid advancements in technology. E-waste recycling presents an opportunity in providing a source of secondary resources such as metals, plastics and glass, as well as employment and economic opportunities in both developed and developing countries. Furthermore, the diversion of this waste stream from landfills or dumps prevents additional land use and the potential negative impacts on human health and the environment. E-waste collection and upgrading is a relatively small-scale but growing industry in SA. Only 12% of e-waste generated was estimated to be recycled in 2015. Most of SA’s ewaste volumes are inaccessible due to lack of formal take-back schemes, lack of consumer awareness, as well as e-waste being kept in storage or disposed of in landfills. E-waste recyclers in SA generally carry out collection, dismantling and sorting, refurbishing, as well as pre-processing of value fractions. There is currently limited local end-processing capacity, therefore partially upgraded value fractions are prepared for export, while non-viable fractions are stockpiled or disposed of in local landfills. The business case for local end-processing of e-waste value fractions, particularly metals, does not seem feasible due to the inconsistent and insufficient volumes available. Furthermore, SA faces unique socio-economic challenges such as an unregulated yet well-established informal sector. Additionally, the legal framework presents many inhibitors for e-waste recyclers. This research study builds upon the knowledge that there is a limited understanding of the feasibility of existing e-waste end-processing technologies for implementation in the South African socio-economic and legislative context. Therefore, this research intends to find out what are the key barriers and enablers to implementing e-waste end-processing technologies in SA. Qualitative research methods were used to uncover the current challenges faced by local recyclers and other stakeholders in the value chain. The data collection thus took the form of interviews, site visits and desktop research. The findings show that the e-waste recycling industry in SA is undergoing many new developments in terms of research and investment interest, as well as the anticipated outcomes from the recent submissions of Industry Waste Management Plans (IndWMP). The industry shows potential as an emerging secondary resource economy, however, the extent to which it will mature is dependent on the organisation of its collection network as well as the development of local end-processing and manufacturing capacity. The collection network and infrastructure are currently supported by both informal and formal recyclers who provide a diversity of collection strategies and a wide network of ewaste sources. However, efforts to increase recycling rates by accessing volumes in storage and increasing consumer awareness and engagement is necessary. Besides the economies of scale required to support the development of local end-processing, alternative technologies to large-scale smelting should be considered for the SA context. While this is seen through initiatives by SA Precious Metals, end-processing technologies is still inaccessible to small and medium recyclers due to cash flow issues as well as cherry-picking of high-grade materials. Therefore, recyclers require further support in terms of dealing with non-viable fractions. This includes research and investments into technologies and business models for the recycling of low-value materials including plastics, as well as subsidies for the cost of safe disposal or treatment of these fractions. Additionally, acquisition of product markets and an increase in manufacturing capacity is necessary to accelerate industry development. The legislative framework also poses limitations on recyclers in the e-waste value chain, stemming from the legal definition of e-waste as a liability as opposed to a resource. While the legislation is unlikely to change, provisions to relieve any legal barriers should be implemented. This includes permissions for pilot projects to test new technologies, as well as legal support for smaller recyclers in the form of consultancy as well as guidelines for sustainable waste management practices should be provided. Finally, while there are many challenges present in the e-waste recycling industry today, the IndWMP offers an opportunity for collaboration between key stakeholders, including the relevant government bodies. Plans have been submitted and the outcomes of approved plans will be revealed at the beginning of 2019. The plans offer solutions for recycling subsidies, increasing the collection and recycling rates, as well as investment into technology, research and enterprise development. However, successful implementation of these plans will only occur if integration and collaboration of the local e-waste community prevail over greed and the struggle for power
Hellmut O Pappe(unpublished) Sismondi, Constant and Tocqueville
Hellmut Pappe died in 1998. Since the publication of Sismondi’s Weggenossen (Geneva, 1956), he had been planning a new biography of Sismondi intended both to replace J. R. Salis’s Sismondi, 1775-1842: la vie et l'oeuvre d'un cosmopolite philosophe (1932) and to give a fuller view of Sismondi’s influence, particularly over significant luminaries of nineteenth century European thought. Although Hellmut Pappe continued working until his death, his published work in this field was limited to a number of articles on Sismondi and editions of such works as the ‘Statitique du Departement du Leman’. Among the papers he left to the University of Sussex, however, were transcriptions of Sismondi’s mother and sister’s diaries, three chapters of the biography describing Sismondi’s life up to 1800, and some miscellaneous papers, destined for the second volume of the biography, describing Sismondi’s relationships with his contemporaries. The paper published here comes from the latter collection and appears to have been one of the last papers that Hellmutt Pappe completed. For reasons of brevity, the version of the paper published here omits the final section of the manuscript version, dealing with Sismondi’s view of North America, in addition to several of the more extensive notes. The paper underlines Pappe’s concern to restore Sismondi to the first rank of European political economists and historians
An Analysis of ICMB 2006
This paper analyzes the 44 papers included in the proceedings of the 5th ICMB conference in
Copenhagen 2006. The purpose of the paper was to investigate to what extent the conference
fulfilled its objectives which was to compare previous expectations with present realities along
the following four areas: (1) business models, (2) the influence of m-business on private and
work life, (3) the impact of regulation, and (4) the re-composition of the value network. In the
analysis we apply the well-known framework by Lyytinen and Yoo for studying nomadic
computing. In addition to this we also classify the papers in relation to type of artifact
investigated, application area, and research methodology. The analysis show that the main focus
lay on the use and adoption of mobile services – over 60% of the papers address. Few papers
address the impact of service on any level of analysis. Business model is a recurring topic in 17
of the papers. There is lack in theorizing of the artifact, e.g. many just study mobile devices, but
do not describe what type they study
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