806 research outputs found

    Constructing regional advantage: Platform policies based on related variety and differentiated knowledge bases

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    The article presents a regional innovation policy model, based on the idea of constructing regional advantage. This policy model brings together concepts like related variety, knowledge bases and policy platforms. Related variety attaches great importance to knowledge spillovers across complementary sectors, possibly in a region. Then, the paper categorises knowledge into ‘analytical’ (science based), ‘synthetic’ (engineering based) and ‘symbolic’ (artistic based) in nature, with different ‘virtual’ and real proximity mixes. Finally, the implications of this are traced for evolving ‘platform policies’ that facilitate economic development within and between regions in action lines appropriate to related variety and differentiated knowledge bases.Related variety; Differentiated knowledge bases; Platform policy, Regional innovation policy

    Stochastic Optimization: An Application to Sub-Arctic Dairy Farming

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    The paper demonstrates how a deterministic farm linear programming (LP) model can be made stochastic and simulated using Solver and Simetar© in Excel©. The demonstration is conducted with an LP-model for a dairy farm for a sub arctic region of Norway. The income risks arising from variation in milk and crop yields due to winter damage in leys and pastures have been quantified for farms demonstrating low, medium and high forage yield risk. The estimated distribution of farm profit will be skewed to the left, indicating a downside risk. In the presence of risks, farmers maximize income by producing the milk quota with using surplus forage for meat production. The analysis demonstrated here may assist farmers and farm managers in improving sensitivity analysis for risky variables in farm LP models.dairy production, Northern Norway, stochastic optimization, stochastic simulation, yield risks, Livestock Production/Industries,

    Constant Savings Rates and Quasi-Arithmetic Population Growth under Exhaustible Resource Constraints

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    In the Dasgupta-Heal-Solow-Stiglitz model of capital accumulation and resource depletion we show the following equivalence: If an efficient path has constant (gross and net of population growth) savings rates, then population growth must be quasi-arithmetic and the path is a maximin or a classical utilitarian optimum. Conversely, if a path is optimal according to maximin or classical utilitarianism (with constant elasticity of marginal utility) under quasiarithmetic population growth, then the (gross and net of population growth) savings rates converge asymptotically to constants.constant savings rate, quasi-arithmetic population growth

    Some studies on the deformation of the membrane in an RF MEMS switch

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    Radio Frequency (RF) switches of Micro Electro Mechanical Systems (MEMS) are appealing to the mobile industry because of their energy efficiency and ability to accommodate more frequency bands. However, the electromechanical coupling of the electrical circuit to the mechanical components in RF MEMS switches is not fully understood. In this paper, we consider the problem of mechanical deformation of electrodes in RF MEMS switch due to the electrostatic forces caused by the difference in voltage between the electrodes. It is known from previous studies of this problem, that the solution exhibits multiple deformation states for a given electrostatic force. Subsequently, the capacity of the switch that depends on the deformation of electrodes displays a hysteresis behaviour against the voltage in the switch. We investigate the present problem along two lines of attack. First, we solve for the deformation states of electrodes using numerical methods such as finite difference and shooting methods. Subsequently, a relationship between capacity and voltage of the RF MEMS switch is constructed. The solutions obtained are exemplified using the continuation and bifurcation package AUTO. Second, we focus on the analytical methods for a simplified version of the problem and on the stability analysis for the solutions of deformation states. The stability analysis shows that there exists a continuous path of equilibrium deformation states between the open and closed state

    Prediction of Low-Voltage Tetrafluoromethane Emissions Based on the Operating Conditions of an Aluminium Electrolysis Cell

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    Greenhouse gas (GHG) generation is inherent in the production of aluminium by a technology that uses carbon anodes. Most of those GHG are composed of CO2 produced by redox reaction that occurs in the cell. However, a significant fraction of the annual GHG production is composed of perfluorocarbons (PFC) resulting from anode effects (AE). Multiple investigations have shown that tetrafluoromethane (CF4) can be generated under low-voltage conditions in the electrolysis cells, without global anode effect. The aim of this paper is to find a quantitative relationship between monitored cell parameters and the emissions of CF4. To achieve this goal, a predictive algorithm has been developed using seven cell indicators. These indicators are based on the cell voltage, the noise level and other parameters calculated from individual anode current monitoring. The predictive algorithm is structured into three different steps. The first two steps give qualitative information while the third one quantitatively describes the expected CF4 concentration at the duct end of the electrolysis cells. Validations after each step are presented and discussed. Finally, a sensitivity analysis was performed to understand the effect of each indicator on the onset of low-voltage PFC emissions. The standard deviation of individual anode currents was found to be the dominant variable. Cell voltage, noise level, and maximum individual anode current also showed a significant correlation with the presence of CF4 in the output gas of an electrolysis cell

    Varieties of capitalism and resilience clusters: an exploratory approach to European regions

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    Regions around the world suffered asymmetric effects with the global economic crisis of the last decade. European regions were not different, and a myriad of impacts with varied magnitudes was felt. This article, inspired by the literature of varieties of capitalism (VoC), presents statistical and econometric evidence about the differences of regional resilience, measured by the variation of economic product, unemployment and R&D across regions in European Union during the economic downturn. An exploratory approach analyses the socio‐economic resilience between different member states, and VoC ideal‐types (liberal market economies, the continental capitalism, the social‐democrat economies, the Mediterranean capitalism, and the Eastern economies). The study presents a typology of resilience clusters in European regions. There were found six types of profiles concerning resilience: great performers, fast growth, intermediate position, R&D reduction, regions in divergence, and Mediterranean regions in big trouble. The study identifies key aspects for resilience, providing policy implications for regional economic policies. The comparison of the resilience clusters and the original VoC categorization has implications for this branch of literature as it does not completely address the variety of regional answers to the shocks.info:eu-repo/semantics/acceptedVersio

    Economic crisis and the construction of a neo-liberal regulatory regime in Korea

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    A consistent theme of the literature on the ontology of the 1997 South Korean crisis is the key role played by regulatory failures and the growing weakness of the state. This paper seeks to briefly highlight both the insights and the limitations of this approach to understanding the crisis. Having done so, we shall set out the argument that the crisis created an opportunity for reformist Korean élites to advance their longstanding, but previously frustrated, project to create a comprehensive unambiguously neo-liberal regulatory regime. This paper will also seek to highlight the implications of our reading of the development of the Korean political economy for broader debates on economic liberalisation, crisis and the future of the developmental state

    Entrepreneurial academics and regional innovation systems: the case of spin-offs from London's universities

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    In this paper we explore the spin-off process from London’s universities using a regional innovation systems (RIS) framework. We examine the pattern of spin-offs in the context of changes in institutional support systems, both within the universities and in the London region. The majority of the university-related spin-offs are small and medium-sized enterprises concentrated in biomedical sectors, as elsewhere. However, over a third have left London. We explore these patterns, the implications for understanding the role of universities in RIS, and consequent policy implications

    Policies for new path development: the case of Oxfordshire

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    This chapter reflects on how evolutionary economic geography (EEG) can be extended to incorporate public policy in its explanations of path development. A weakness of EEG is the poor conceptualisation of the role of the state (central, regional, local) in regional path development. It is therefore argued that a multi-scalar perspective of policy is required and that a large set of policies deserve attention. Oxfordshire in the UK is used to explore the link between public policy and path development
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