Assessing the role of triple helix system intermediaries in nurturing an industrial biotechnology innovation network

The rate of transition to a circular economy would largely be influenced by how successfully sustainable niche innovation can be developed and adopted. This paper measures and evaluates the effectiveness of employing a triple helix-based system intermediary as a policy tool for nurturing a niche innovation network in line with circular economy transition. This was achieved through a complete social network analysis of a national industrial biotechnology innovation network, in which the organization functioning as network manager was innovatively structured as a triple helix-based system intermediary. Through unique access to the entire national industrial biotechnology niche network, a large set of primary data was collected on 13 types of relational ties related to innovation between all 64 public sector, industry and academic niche network member organizations. The impact of the triple helix-based system intermediary on the level of cohesion, presence of cohesive subgroups and centralisation of the niche network was empirically measured. As such, the effectiveness of the intermediary in undertaking key nurturing activities of building the network, facilitating shared learning and raising expectations were evaluated. This allowed for the most comprehensive empirical study to date on a niche innovation network and the role of system intermediaries in circular economy transition. The results of the analysis demonstrate the profound nurturing effect that the introduction of a triple helix-based system intermediary has had on the network. In particular, the results appear to confirm the effectiveness of the intermediary with regards to increasing knowledge and resource flows amongst triple helix institutions as well as between regime and niche actors

Estimation of stratospheric input to the Arctic troposphere: 7Be and 10Be in aerosols at Alert, Canada

Concentrations of 7Be and 210Pb in 2 years of weekly high-volume aerosol samples collected at Alert, Northwest Territories, Canada, showed pronounced seasonal variations. We observed a broad winter peak in 210Pb concentration and a spring peak in 7Be. These peaks were similar in magnitude and duration to previously reported results for a number of stations in the Arctic Basin. Beryllium 10 concentrations (determined only during the first year of this study) were well correlated with those of 7Be; the atom ratio 10Be/7Be was nearly constant at 2.2 throughout the year. This relatively high value of 10Be/7Be indicates that the stratosphere must constitute an important source of both Be isotopes in the Arctic troposphere throughout the year. A simple mixing model based on the small seasonal variations of 10Be/7Be indicates an approximately twofold increase of stratospheric influence in the free troposphere in late summer. The spring maxima in concentrations of both Be isotopes at the surface apparently reflect vertical mixing in rather than stratospheric injections into the troposphere. We have merged the results of the Be-based mixing model with weekly O3 soundings to assess Arctic stratospheric impact on the surface O3 budget at Alert. The resulting estimates indicate that stratospheric inputs can account for a maximum of 10-15% of the 03 at the surface in spring and for less during the rest of the year. These estimates are most uncertain during the winter. The combination of Be isotopic measurements and O3 vertical profiles could allow quantification of the contributions of O3 from the Arctic stratosphere and lower latitude regions to the O3 budget in the Arctic troposphere. Although at present the lack of a quantitative understanding of the temporal variation of O3 lifetime in the Arctic troposphere precludes making definitive calculations, qualitative examples of the power of this approach are given

Is going circular just? Environmental justice and just transition – key elements for an inclusive circular economy

A successful circular economy transition relies on inclusiveness and social justice. Two main equity dimensions should be considered for the circular economy transition to be inclusive: rectifying existing injustices of mismanaged waste and pollution that affects hundreds of millions of people worldwide on the one hand, whilst anticipating and addressing the negative future impacts on workers and industries that the transition from a linear to circular economy will create, on the other hand. To do so, understanding the impacts of national transitions in Europe on workers and communities in developing countries will be key, notably how to improve economic diversification and retrain workers in producer countries, and how to increase stakeholder engagement

Shedding light on the last mile : a study on the diffusion of pay as you go solar home systems in Central East Africa

Approximately 1.2 billion people lack basic access to electricity. The United Nations 'Sustainable Energy for All' initiative exemplifies the urgent need to address this issue. Recent advancements in photovoltaic, light emitting diode and battery technology have resulted in the rise of affordable and innovative household electricity technologies, however penetration rates remain low due to complexity surrounding ‘last mile’ distribution. This paper applies the diffusion of innovations theory as a framework to investigate the ‘last mile’ challenges encountered when launching a Pay As You Go Solar Home System in a region of Central East Africa. The results indicate that Pay As You Go offers the potential to deliver a disruptive positive impact with regard to increasing access to clean affordable energy for the poor, however, both the technology and business model are more complex than current alternatives and therefore require a much more developed go-to-market strategy. The cost of achieving widespread diffusion is therefore higher than similar products sold at retail, yet this is balanced by potential for a much faster rate of adoption. Finally, this paper demonstrates the applicability of the diffusion of innovations theory as a viable framework for analysing last mile challenges associated with Solar Home Systems

A multilevel perspective of transition to a circular economy with particular reference to a community renewable energy niche

This article is an attempt to look into the processes involved in achieving full system transition to a circular economy (CE) through the development of niche activities. Based on a case study relating to a community renewable energy (CRE) niche, the article argues that for transition to take hold and make progress, the socio-technical regimes underpinning the system of a linear economy would need to be disrupted through the agency of niches that bring forth radical innovations across a spectrum of activities. This argument is explored through a case study from the energy sector in Scotland. A Delphi study is conducted to assess the success of the Scottish Government in progressing CRE as a niche aimed at disrupting the incumbent fossil-based energy regime. The study finds that despite the commitment of the Scottish Government to empower, nurture and shield CRE as a niche, there is no clear evidence as yet to show whether these actions have achieved their desired effect of enabling the CRE niche to play a disruptive role. The article also underscores the need for methodological refinement to enhance the robustness of the data used in the evaluation of policy efforts in niche development as a strategy for transition to CE

Leveraging triple helix and system intermediaries to enhance effectiveness of protected spaces and strategic niche management for transitioning to circular economy

The transition to circular economy has been heralded as a vision to overcome the challenges of rapid population growth, economic stagnation and environmental degradation. A promising policy tool for accelerating such a transition is Strategic Niche Management (SNM), the central tenet of which is the formation of ‘protected spaces’ to support the growth of sustainable innovation. Studies have demonstrated that current top-down policy approaches to governing protected spaces have led to the unintended consequences of network tensions, low quality learning processes and low innovation adoption rates outside protected spaces. This limits the impact of SNM as a transition tool. Through a detailed literature review, this paper looks into a novel devolved governance framework for protected spaces in the context of transition to circular economy. The framework addresses current limitations of SNM by acknowledging the synergistic relationship with the triple helix innovation system; and innovation intermediation. Transition to circular economy turns on the achievement of ‘triple helix consensus’ across ‘protected spaces’ to provide the requisite platform for sustained innovation and for the recurrent choice of knowledge and market systems that are consistent with the circular economy growth trajectory

Major Effects of Nonmetallic Inclusions on the Fatigue Life of Disk Superalloy Demonstrated

The fatigue properties of modern powder metallurgy disk alloys can vary because of the different steps of materials and component processing and machining. Among these variables, the effects of nonmetallic inclusions introduced during the powder atomization and handling processes have been shown to significantly degrade low-cycle fatigue life. The levels of inclusion contamination have, therefore, been reduced to less than 1 part per million in state-of-the-art nickel disk powder-processing facilities. Yet the large quantities of compressor and turbine disks weighing from 100 to over 1000 lb have enough total volume and surface area for these rare inclusions to still be present and limit fatigue life. The objective of this study was to investigate the effects on fatigue life of these inclusions, as part of the Crack Resistant Disk Materials task within the Ultra Safe Propulsion Project. Inclusions were carefully introduced at elevated levels in a nickel-base disk superalloy, U720, produced using powder metallurgy processing. Multiple strain-controlled fatigue tests were then performed on extracted test specimens at 650 C. Analyses were performed to compare the low-cycle fatigue lives and failure initiation sites as functions of inclusion content and fatigue conditions. Powder of the nickel-base superalloy U720 was atomized in argon at Special Metals Corporation, Inc., using production-scale high-cleanliness powder-processing facilities and handling practices. The powder was then passed through a 270-mesh screen. One portion of this powder was set aside for subsequent consolidation without introduced inclusions. Two other portions of this powder were seeded with alumina inclusions. Small, polycrystalline soft (Type 2) inclusions of about 50 mm diameter were carefully prepared and blended into one powder lot, and larger hard (Type 1) inclusions of about 150 mm mean diameter were introduced into the other seeded portion of powder. All three portions of powder were then sealed in separate containers, hot isostatically pressurized, extruded, forged into subscale disks, and heat treated. Low-cycle-fatigue specimens were then extracted, machined, and tested. Fatigue tests were performed at 650 C in closed-loop servohydraulic testing machines using induction heating and axial extensometers. All tests were continued to failure, and fractographic evaluations were performed on all specimens to determine the crack initiation sites. A large majority of the failures in specimens with introduced inclusions occurred at cracks initiating from inclusions at the specimen surface, as shown for each type of inclusion in the following bar chart. The inclusions significantly reduced fatigue life from unseeded material levels, as shown in the bar chart. These effects were found to depend on the strain range, strain ratio, and inclusion size. Tests at lower strain ranges and higher strain ratios resulted in larger effects of inclusions on life. Inclusion effects on life were thereby maximized in tests at the lowest strain range of 0.6 percent and the most positive strain ratio of 0.5. Under these conditions, small Type 2 inclusions reduced life substantially-- about 20 times, whereas large Type 1 inclusions dramatically reduced life 100 times. These results clearly demonstrate that it is essential to include the effects of inclusions for realistic predictions of disk fatigue life. Important issues, including temperature dependence, crack initiation versus propagation, surface treatments, realistic disk features and machining, and realistic disk spin testing will be addressed to accurately model inclusion effects on disk fatigue life. Fatigue life varied from well over 105 cycles for no inclusions to a little over 103 cycles for 100-micrometer inclusions. A single crack initiating at a surface-connected seeded inclusion caused failure in each case