19684 research outputs found
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Capitalism and the state:A new materialist perspective
No full textThis article considers how the relational, post-anthropocentric and monist ontology of the new materialisms can inform a theory of the contemporary capitalist state, and how this perspective offers a distinctive resolution of some of the negative consequences of a capitalist mode of production. It summarises Deleuze and Guattari’s analysis of capitalism as an international/ecumenical social formation, founded upon a ‘capitalist axiomatic’: namely, the free flows of capital and labour required for the everyday workings of the capitalist market. The state is a material realisation of this capitalist axiomatic. The article then undertakes a more-than-human analysis of capitalist production and markets, supply and demand, in terms of affects and assemblages. The article invokes the metaphor of a ‘black hole’ to suggest that capitalism is not merely exploitative of workers, but a formation from which neither worker nor entrepreneur can escape once a participant. Furthermore, it is these more-than-human affects that produce undesirable consequences including uncertainty, waste and social inequalities. This second analysis further refines a monist understanding of the capitalist state and suggests immediate measures to counter the unintended consequences of a market economy
Operational envelope of a hybrid permanent magnet generator for wind applications
Get PDFThe evolution of technologies has led to the exploration of more efficient mechanisms in power generation systems. Currently, wind energy converters provide an efficient alternative for obtaining electrical energy; however, the location of the wind farms and the size and weight of the components are significant limitations. Implementing hybrid generators is an effective alternative for these systems since they could reduce the electrical and electronic elements. Hybrid generators have two fundamental parts: the permanent magnet and wound field rotor components. The terminal voltages of the generator can be adjusted by modifying the wound field current. However, it is essential to establish detailed studies in which the operating region of this generator is determined. This work provides a reference framework for establishing phase current and output power limits under different rotor speeds and DC-link voltages; this information could offer an operative region of the hybrid generator to ensure the lifetime and the implementation of these generators according to the availability of electronic devices
RAN Slicing with Joint Resource Allocation for a Multi-Tenant Multi-Service System
Get PDFIn Multi-Tenant Multi-Service (MTMS) systems, multiple Mobile Virtual Network Operators (MVNOs) share the same physical network infrastructure, with each tenant provisioning a variety of 5G network slices with distinct service needs. Efficient resource allocation enhances utilization. This paper analyses System Spectral Efficiency (SSE) of a downlink MTMS system with three types of network slices. The SSE maximization problem involves joint resource allocation (subcarrier and power) optimization, formulated as a combinatorial Mixed-Integer Non-linear Program (MINLP). Solving such NP-hard problems optimally within a reasonable time is challenging. This research improves SSE by meeting slice performance thresholds and reducing computation times. To address this, we propose Joint Power and Subcarrier Allocation (JPSA) using a population-based natural search algorithm with polynomial time complexity, which is compared with Bounded Exhaustive Search (BES) having exponential time complexity. Both schemes result in sub-optimal and nearly equivalent solutions, but JPSA outperforms BES with much reduced computation time. Additionally, we compare JPSA with Equal Power and Subcarrier Optimization (EPSO) and Equal Subcarrier and Power Optimization (ESPO), demonstrating a 5% and 6% SSE improvement compared to EPSO and ESPO, respectively. The JPSA model is analysed through simulations, considering BS transmit power, slice QoS thresholds, user count, and intra-slice interference threshold.</p
Fault diagnosis of wind turbine structures with a triaxial vibration dual-branch feature fusion network
No full textThe structural safety and fault diagnosis of wind turbines have emerged as key requirements for maintaining the power output performance and reliability of the large-scale wind power industry. Due to the unpredictable operating conditions and the diversity of fault varieties of wind turbines, accurate fault diagnosis poses significant challenges. This paper proposes a novel triaxial vibration-based dual-branch feature fusion network (TriVib-DBFFN) for structural health monitoring of wind turbines. The network is developed with a learnable Fast Fourier transform (FFT) layer by combining conventional signal processing methods with the adaptability of neural networks. Especially, it innovatively includes a dual-branch feature fusion network that is able to adaptively integrate meaningful features in both the time and frequency domains. This fusion method significantly improves diagnostic performance under diverse operating conditions. In addition, this study can reveal the specific signal directions and frequency components prioritized during feature extraction by analyzing the weighting outcomes obtained from the model training. Therefore, common faults in a wind turbine system including foundation looseness, tower tilt, and blade asymmetricity at different degrees can be diagnosed with high accuracy.</p
Slowly evolving proteins support the monophyly of Craspedida (Choanoflagellatea) and a marine origin of choanoflagellates
No full textChoanoflagellate species have been taxonomically divided upon the morphological and developmental basis of their extracellular coat (periplast). Species within the order Craspedida possess a purely organic periplast, whereas taxa of the order Acanthoecida have an additional silica based periplast termed the lorica. Whilst small-scale phylogenetic studies have recovered the two orders as monophyletic, recent phylogenomic analyses have rejected the monophyly of the craspedids. These analyses suggest that the freshwater craspedid Codosiga hollandica falls within the earliest branching choanoflagellate lineage; however, it has also been noted that phylogenomic studies result in inconsistent phylogenies, with unstable long-branched species being recovered as basal choanoflagellates. Presented here are phylogenetic analyses, based upon slowly evolving ribosomal proteins, which consistently recover both craspedid monophyly and a derived placement of C. hollandica. The addition of further, long-branched, ribosomal proteins to phylogenetic analyses are shown to generate longer terminal branches and a weakening of the support for Craspedida. The analyses highlight the requirement for an increase in data, in terms of both taxa and gene coverage, to successfully resolve the earliest craspedid branches. In addition, phylogenetically unstable species are identified that are recommended to be omitted from phylogenomic studies as they have the potential to disrupt recovered relationships
The Humanities, Creativity, and Intellectual Disability:Theory and Practice in Action
No full textThis piece provides a short overview of an inclusive and co-produced intellectual disability project, which included input from service users, support workers, heritage professionals and volunteers, and university staff and students. It is one of a series of intended publications that will arise out of the collaboration, but this one focuses on the contributions of two staff, one History and one English, and three final year undergraduate History students. Each co-author reflects on their motivations and rationales for being involved in the project, and their roles in contributing to Creative Health outcomes
Systematic Review of Pre-Clinical Systems Using Artificial Microenvironments and Anti-Migratory Drugs to Control Migration of Glioblastoma Cells
No full textBackgroundGlioblastoma multiforme (GBM) is the most prevalent primary brain tumour, with an incidence of 2 per 100,000. The standard clinical treatments do not sufficiently target cell migration and invasion, leading to recurrence after surgical resection and resistance after chemotherapy and radiotherapy. Pre-clinical studies are being conducted to construct artificial substrates that can mimic the tumour microenvironment (TME) to prevent GBM cells from migrating along their primary route through blood vessels and white matter tracts. Alongside, targeted therapies using anti-migratory or ‘migrastatic’ drugs are also being developed. This study aimed to review the therapeutic translational strategies emerging from the study of the GBM microenvironment and anti-migratory drugs.MethodsA systematic literature search was carried out using search key terms and synonyms. Full-paper screening was performed based on specific inclusion and exclusion criteria.ResultsFrom the systems interrogated, the ‘Nanofibre’ assay is suitable to simulate white matter tracts, while hydrogel-based invasion assays and GBM cerebral organoid (GLICO) mimic the brain extracellular matrix. Inhibitors with anti-migratory activity found in this study are active involving distinct molecular mechanisms and have been tested on cell migration assays.ConclusionOverall, we have analysed therapeutic strategies emerging from an artificial GBM TME approach and from the identification of anti-migratory inhibitors. Both carry potential to improve treatment options to prevent tumour dissemination and spread for GBM
Mondays at the Museum
No full textMondays at the Museum is a Creative Health initiative aimed at reducing health inequalities in underserved areas by providing accessible health and wellbeing activities at the Tolson Museum in Huddersfield. Museum staff collaborate withSocial Prescribers, Primary Care Networks (PCN) and Local Anchor organisations to expand access to mental and physical health support, outside clinical settings. The council-run Tolson is uniquely placed to provide a welcoming space, accessible without stigma. Activities provided include Big Drum, Wellbeing walks, Yoga, Tai Chi, Flex and Stretch and Crafts. Mondays at the Museum is a key example of the delivery of Kirklees Heritage Strategy approach to Heritage in Action
Research on the output characteristics and SOC estimation method of lithium-ion batteries over a wide range of operating temperature conditions
No full textWith the rapid growth of the EV market, the use of lithium-ion batteries (LIBs) has increased significantly. However, the safety of these battery systems remains a concern. Accurate estimation of the state of charge (SOC) is crucial to enhance battery safety and longevity. In this paper, the impact of temperature on LIB performance is investigated and it is found that temperature variations can lead to inaccurate SOC estimation. To address this issue, LIB performance and capacity degradation at different operating temperatures are experimentally studied, and Electrochemical impedance spectroscopy (EIS) characteristics are analyzed. Based on the analysis results, an SOC estimation method, combining recursive least squares with forgetting factor (FFRLS) and adaptive extended Kalman filtering (AEKF) with temperature compensation, is proposed in the study. This method is tested respectively at 0 °C, 25 °C and 45 °C, demonstrating the feasibility and higher prediction accuracy of the proposed method across a wide temperature range.</p
UK government communication:From evolution to revolution
No full textThis chapter takes an overview of the development of the UK Government Communication Service (GCS), touching briefly on its origins but mainly focusing on the changes that have taken place in the last 25 years. It argues that after a slow, revolutionary start, there is now revolutionary change, which has transformed the service from one characterised by well-intentioned amateurism to one of professional proficiency. The chapter chronicles the main events and political contexts that have shaped government communication over the last seven decades and contends that they can be categorised into six distinct periods, each with their own specific characteristics. There are a number of themes that remain constant throughout: a recurring battle to remain free from politicisation; steady progress towards closer coordination of communication activity by government departments and the ‘centre’ (Cabinet Office); a shift to a more marketing-based model of communication and the ongoing drive to professionalise the service through professional development, which has become increasingly structured over time. The result is that GCS is now recognised as a global leader in government communication and, rather than being seen to be lagging behind the private sector, now has much to teach it.</p
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