Dynamic Power Research Articles

Dynamic Power Balancing Control Method for Energy Storage DC/DC Parallel Supply System With Low-Frequency Pulsed Load

Dynamic Power Balancing Control Method for Energy Storage DC/DC Parallel Supply System With Low-Frequency Pulsed Load

Epistemic justice and critical minerals–Towards a planetary just transition

Global transitions to low-carbon energy systems are heavily reliant on the large-scale extraction of critical minerals (e.g. cobalt, lithium, rare earth elements). These minerals are key components in green technological developments such as wind turbines, solar photovoltaics and electric vehicle motors. However, research has highlighted the multifaceted social and environmental costs of critical mineral extraction and processing across marginalised parts of the Global South, evidencing significant impacts on local people's health, livelihoods, human rights and land-based resources. This paper centres on epistemic justice in the critical mineral (CM) industry, an under-explored dimension of just energy transitions. Through the analysis, we identify two main forms of epistemic injustice in the CM industry: discriminatory epistemic injustice and distributive epistemic injustice. Building on Heffron's (2020) JUST framework on CM, we highlight the importance of epistemic injustice in the just transition to reveal the power dynamics, socio-environmental injustices, and exclusionary practices in the CM industry. Through bringing new insights on knowledge equity in the context of CM, we recommend creating participatory spaces for dialogue, decision-making, and knowledge sharing, which can facilitate more respectful and equitable interactions between all stakeholders, thereby contributing to more holistic understandings of a ‘planetary just transition’.

Delta voices of climate crisis: Community Digital Storytelling in Bangladesh and Vietnam

This article explores the audiovisual research method Community Digital Storytelling (CDST) as developed for a project documenting Indigenous delta voices in Bangladesh and Vietnam. Centred on the co-production and collection of community stories, this interdisciplinary method incorporates smartphone filmmaking, environmental storytelling, community-based participatory research, and Indigenous methodologies. Addressing community participation, power dynamics and fieldwork challenges, CDST is presented as an adaptable method capable of capturing eco-imaginaries, fostering dialogue on socioecological challenges, and amplifying the voices of marginalised communities. The article contributes a valuable guide to participatory media production with communities in various contexts, offering insights for scholars and practitioners seeking inclusive, respectful, and impactful research practices.

The role of data-driven methods in power system security assessment from aggregated grid data

Data-driven techniques have been considered as an enabling technology for reducing the computational burden of both static and dynamic power system security analysis. Anyway, the studies reported in the literature mainly focused on inferring from historical data the mapping between the bus variables before and after a certain contingencies set, while, to the best of the Author's knowledge, limited contributions have been devoted to try and classify the power system security state by processing aggregated grid data. This is a relevant issue to address for a Transmission System Operator since it could allow a sensible decrease in the computational burden and, considering that aggregated grid data can be reliably predicted from several hours to one day ahead, it may enable the evolution of security assessment to security forecasting. In trying and filling this research gap, this paper explores the role of machine learning and feature selection algorithms. A realistic case study involving 2 years of synthetic grid data simulated on the Italian power system model against future potential operational scenarios characterized by a high share of renewables is presented and discussed to identify the most promising computing paradigms, analyzing the criticality of tuning the feature selection and classifier algorithms.

Ultra‐Power‐Efficient, Electrically Programmable, Multi‐State Photonic Flash Memory on a Heterogeneous III‐V/Si Platform

AbstractNon‐volatile charge‐trap flash memory (CTM) co‐located with heterogeneous III‐V/Si photonics is demonstrated. The wafer‐bonded III‐V/Si CTM cell facilitates non‐volatile optical functionality for a variety of devices such as Mach–Zehnder Interferometers (MZIs), asymmetric MZI lattice filters, and ring resonator filters. The MZI CTM exhibits full write/erase operation (100 cycles with 500 states) with wavelength shifts of Δλnon‐volatile = 1.16 nm (Δneff,non‐volatile ≈ 2.5 × 10−4) and a dynamic power consumption <20 pW (limited by measurement). Multi‐bit write operation (2 bits) is also demonstrated and verified over a time duration of 24 h and most likely beyond. The cascaded second order ring resonator CTM filter exhibited an improved ER of ≈7.11 dB compared to the MZI and wavelength shifts of Δλnon‐volatile = 0.041 nm (Δneff, non‐volatile = 1.5 × 10−4) with similar pW‐level dynamic power consumption as the MZI CTM. The ability to co‐locate photonic computing elements and non‐volatile memory provides an attractive path toward eliminating the von‐Neumann bottleneck.

Power relations in the novel My Name is Alam by Leila S. Chudori

Exploring discursive formations in literary works allows researchers to analyze how language and discourse shape meaning, power dynamics, and cultural ideologies within a specific literary context. Understanding the discursive formations in literary works is crucial for comprehending the historical and social context in which these works were produced. This research aims to describe the forms and representations of power relations in the novel My Name is Alam by Leila S. Chudori. This is qualitative descriptive research where the data is interpreted using the genealogical and archaeological analysis methods promoted by Foucault. This method aims to uncover and understand hidden power dynamics in various aspects of human life. The research results prove that the author's statements were spread across various formations and became material for discussion. Two forms of power relations are being discussed; the first is the New Order government's practice of authoritarian power in its various policies, which limits human rights. Second, there is resistance from marginalized groups, namely political prisoners and their families. This form of resistance is an effort by marginalized groups to fight for equality and justice. The New Order government in Indonesia constructed a discourse to create a simulated space to legitimize its power within national memory politics. This simulated world is a blend of reality and fantasy constantly reproduced. As a result, the actual reality becomes obscured, and the symbols created are perceived as reality.

Parties, Power, and People: The Impact of Duma Participation on Political Parties in the Russian Empire

This article explores role of the State Duma in shaping the destinies of key political parties, particularly the Constitutional Democratic Party (Kadets) and the Bolsheviks, prior to the Russian Revolutions of 1917. Despite its failure to avert the revolutions, the State Duma was instrumental in shaping the future trajectories of the participating parties. Utilizing a framework that combines power dynamics and historical analysis, the essay scrutinizes the State Duma's role in Russian power dynamics and its impact on the future trajectories of Russian political parties. The essay provides an interpretation of the Kadets' and Bolsheviks' fates through their attitudes, idealism, and interactions with this experimental legislative body.

Black Sheep as Tragic Hero: How Disruptive Students Resist the Oppression and Why They Fail to Liberate?

Within the educational landscapes, there exists a prevailing dichotomy. On one side stand the obedient students, absorbing knowledge from their teachers unconditionally, and on the other side stand their non-compliant counterparts who are prone to disrupt the prescribed order, labeled as the black sheep of the academic flock. In education, obedience and conformity are celebrated, while noncompliance is stigmatized. Researchers often focus on strategies to control disruptive behavior, perpetuating teacher-centered approaches that maintain power imbalances. However, disruptive behavior is not just defiance. It's a response to an oppressive educational paradigm. This study delves into the narrative of these disruptive students, exploring their resistance to an educational system with intrinsic oppressive nature and the obstacles they encounter in their pursuit of liberation. The theoretical framework of this study is mainly constructed upon Freires critical pedagogy theory and literature on power dynamics to examine power dynamics in education settings and to understand students resistant behavior and why it fails to provoke change.

Coproduced, arts interventions for nurturing care (0-5 years) in low-income and middle-income countries (LMICs): a realist review.

Community-based arts interventions have the potential to support contextually relevant nurturing care programmes and policies that adapt to different settings. Understanding the distinctive features of using the arts in local, culturally specific ways in low/middle-income countries (LMICs); how this varies by context; and gaining a better understanding of the perspectives on desirable outcomes for communities is important evidence that this review generates. We conducted a realist review of papers that covered outcomes related to child health or development (0-5 years) AND arts-based approaches AND community-based, participatory approaches AND based in LMICs using a range of databases and other networks. A coding framework was developed covering context, intervention, outcomes, mechanisms, study, sustainability, transferability and scalability. The included papers reported 18 unique interventions. Interventions covered 14 countries, with evidence lacking for South America, Arab countries and parts of Africa. Lead authors came from mostly clinical science-based disciplines and from institutions in a different country to the country/countries studied. Intended outcomes from interventions included clinical, health systems/organisation, changes in practices/behaviours/knowledge/attitudes, and wider social and educational goals. We identified three demi-regularities (semi-predictable patterns or pathways of programme functioning): participatory design based on valuing different sources of expertise; dynamic adaptation of intervention to context; and community participation in arts-based approaches. Our findings suggest that arts-based, nurturing care interventions have greater potential when they include local knowledge, embed into existing infrastructures and there is a clear plan for ongoing resourcing of the intervention. Studies with better documentation of the lessons learnt, regarding the intervention delivery process and the power dynamics involved, are needed to better understand what works, for whom and in which contexts.

Women and Water: An Art-Based Academic-Community Partnership

Women constitute most volunteer water stewards in West Virginia. After having conducted participatory research on the motivations behind women’s engagement with water preservation and restoration work we carried out two participatory art-based activities. In this Practices and Curations, we reflect on these two art-based activities to facilitate networking between researchers and participants and to communicate to the wider public the role of women water stewards. Together with community partners we first organized an icebreaker for women to share a boundary object that signified their connection with water. These boundary objects were subsequently displayed in an art exhibit highlighting women’s connection to water, their reasons for care work and the consistent role they had played in environmental preservation in West Virginia. We conclude by providing incitements to our fellow academics to engage with art in participatory geographical research as a learning experience that can overturn the common researcher-researched power dynamics.

Power dynamics in couple relationships: A review and applications for systemic family therapists.

Power dynamics, generally defined as the patterns of partners enacting or resisting influence, are inherent in all relationships. Power structures and processes play a role in people's perceptions of themselves and others, their feelings and emotions, and both their implicit and explicit behaviors. As such, understanding power dynamics is crucial for fully conceptualizing and intervening within relationships. Although power was not always given high priority in many of the early systemic family therapy models, that has changed over the years, with scholars working to address how power is manifested in relationships, how power imbalances affect relationships, and how power can be addressed more explicitly in treatment. Nonetheless, there is much additional work needed to ensure that systemic therapists have an appropriate depth of understanding regarding power dynamics to fully recognize their manifestations in relationships and then intervene appropriately. To help in these efforts, this paper aims to synthesize relational power research into a more complete description of what power is and how it is enacted in couple relationships. To do this, we introduce relevant perspectives of power not fully integrated with family therapy theories. Overall, we provide a brief history of power-oriented research in the fields of family therapy, outline couple research regarding the sources of power that can inform therapeutic case conceptualizations and interventions, describe how power is addressed in specific couple therapy models, and highlight some important clinical applications that can help systemic therapists more fully address power.

Food porn 2.0? Definitions, challenges, and potentials of an elusive concept

ABSTRACT Food porn emerged in the 1970s as an academic concept and has since become integrated into everyday social media use. The aim of this article is to analyse the concept of food porn through a critical discussion of the existing literature in cultural and media studies focusing on the definitions of food porn, its uses as an analytical and theoretical lens to explore food aesthetics, and its current relevance. The authors show that the definitions and interpretations vary a great deal and argue that three overarching themes dominate the literature: 1) formal aesthetics; 2) gender, body, and sexuality; 3) excess and transgression. Finally, it is argued that future uses of the concept should either focus on a) an empirically founded approach focusing on the actual use of the concept; or b) a theoretically founded approach with a formal typology focusing on hierarchies and power dynamics.

A Multiple Controlled Toffoli Driven Adaptive Quantum Neural Network Model for Dynamic Workload Prediction in Cloud Environments.

The key challenges in cloud computing encompass dynamic resource scaling, load balancing, and power consumption. Accurate workload prediction is identified as a crucial strategy to address these challenges. Despite numerous methods proposed to tackle this issue, existing approaches fall short of capturing the high-variance nature of volatile and dynamic cloud workloads. Consequently, this paper introduces a novel model aimed at addressing this limitation. This paper presents a novel Multiple Controlled Toffoli-driven Adaptive Quantum Neural Network (MCT-AQNN) model to establish an empirical solution to complex, elastic as well as challenging workload prediction problems by optimizing the exploration, adaption, and exploitation proficiencies through quantum learning. The computational adaptability of quantum computing is ingrained with machine learning algorithms to derive more precise correlations from dynamic and complex workloads. The furnished input data point and hatched neural weights are refitted in the form of qubits while the controlling effects of Multiple Controlled Toffoli (MCT) gates are operated at the hidden and output layers of Quantum Neural Network (QNN) for enhancing learning capabilities. Complimentarily, a Uniformly Adaptive Quantum Machine Learning (UAQL) algorithm has evolved to functionally and effectually train the QNN. The extensive experiments are conducted and the comparisons are performed with state-of-the-art methods using four real-world benchmark datasets. Experimental results evince that MCT-AQNN has up to 32%-96% higher accuracy than the existing approaches.

Menstrual cycle and strength levels in women: a pilot study

It is speculated that hormonal fluctuations during the different menstrual cycle (MC) phases can influence physiological systems, such as musculoskeletal, and can also impact physical performance and quality of life. The aimed to check and compare the effects of MC on women's strength levels. The sample was made up of 18-30 years old women, who were using (G1) or not (G2) Oral Contraceptives (OC). Hormonal concentrations were determined using blood extraction, while muscle strength (FM) was assessed through the maximal dynamic strength (1RM) and muscle power tests at 40%, 60%, and 80%. The data were processed using two-factor ANCOVA (group and time), at a significance level of p < 0.05. Hormonal values showed greater significant differences in almost all hormones and G1 phases. The results of the FM tests showed a significant reduction of 1 RM (day 21) in G1, with a moderate effect size on days 21 and 11. In the G1 muscle power (MP) test, on day 01 there was a significant increase in 60% concerning day 11 and day 21. It can be considered that the hormonal behavior of both groups was maintained throughout the evaluations. Regarding FM manifestations, it is suggested that regular MC, without the use of OC, induces a reduction in FM levels during days 11 and 21 in women. However, the group that used OC had a larger effect size on 40% on day 01 and 40% on day 21.

Intercultural and Deliberative Disaster Ethics in Volcanic Eruptions

The objectives of this article are (i) to identify the most challenging ethical dilemmas and questions arising from the experiences of communities and professionals affected by or involved in volcanic eruptions, including risk management, the dissemination of information, and tourism; and (ii) to provide arguments for intercultural ethics to address these dilemmas. Intercultural ethics provide invaluable resources to disaster ethics across all three phases of the complete disaster management cycle. In this article, intercultural ethics is viewed as an ethics grounded in ongoing dialogue, facilitating the examination and establishment of norms and a critical reflection on values and their evolution. This approach recognizes power dynamics that may influence fair participation in dialogues and aims to address them, while also integrating elements of deliberative ethics to ensure that dialogues genuinely contribute to legitimizing decisions. Intercultural sensibility helps bridge the gap between experts and non-experts in both directions (a) by emphasizing the duty of transferring scientific knowledge (for experts) and the responsibility of acquiring scientific literacy (for citizens); and (b) by highlighting the importance of a ‘knowledge dialogue’ that acknowledges the non-scientific knowledge of citizens, rooted in their cultural background and experiences of dealing with past disasters, and shaping life in volcanic territories.

(Re)claiming subversive spaces on TikTok: the complexities of body activisms within physical activity cultures

ABSTRACT Feminist organising in digital spaces, such as social media, has the potential for activism, resistance, and visibility; yet these spaces continue to be dominated by narrow body representations and shaped by unequal power dynamics. We propose that bodies of difference may find vibrant and difference-affirming homes within their digital communities via innovative algorithm-based social media spheres, such as TikTok. Using a creative methodological mashup that we call a ‘collaborative digital autoethnography’, we explored our experiences of difference-affirming hashtags (e.g. #CurvyGym, #DisabledFitness, #QueerFitness) and creators who shared explicitly inclusive and/or subversive content (e.g. #ThickTocker). Using reflexive thematic analysis and thinking with/through Safiya Noble’s work on algorithms of oppression, we developed four themes: #TheFringe, #(Re)claimingFlesh, #CircleOfSurveillance, and #TheWrongSideOfTikTok. In #TheFringe, we found normatively embodied creators who used TikTok as a space to question normative fitness trends – content that helped build our difference-affirming algorithmic space. In #(Re)claimingFlesh, fat-positive creators used TikTok to unapologetically reveal or grab body fat/flesh, and TikTokkers re-storied their body-related journeys by flipping the script of harmful body surveillance (i.e. #CircleOfSurveillance). Lastly, some creators shared grievances about the (oppressive) algorithms of TikTok that banished them to #TheWrongSideOfTikTok. We provide reflexive accounts of our own embodied differences while exploring the TikTok platform, searching for spaces that affirm our bodies while contending with algorithmic oppression. We conclude by discussing TikTok as a platform where powerful collective activism and revolution can form, yet always in contention with trolling, hate, and harmful algorithms that constrain activist movements within sport, exercise, and health contexts.

Australia–Japan energy partnerships for regional security and decarbonisation

Australia and Japan stand at a pivotal juncture in their energy futures, with shared imperatives of ensuring energy security, affordability, and sustainability. As key players in the global energy landscape, their collaboration holds the potential to shape the trajectory of the Indo-Pacific’s energy transition, as outlined in Japan’s ‘New Plan for a Free and Open Indo-Pacific’ (FOIP). A central aspect of this collaboration involves securing liquefied natural gas (LNG) supplies from Australia to Japan and the region while simultaneously decarbonising the supply chain through carbon capture and storage (CCS) and advancing hydrogen technologies. Both nations recognise the significance of natural gas in ensuring regional energy security and affordability. Japan, heavily reliant on energy imports, particularly LNG, is motivated by past crises and geopolitical tensions to diversify its energy sources. The partnership between Australia and Japan not only addresses Japan’s energy needs but also influences the power dynamics within the Indo-Pacific. Challenges such as regulatory uncertainties and policy shifts dampen confidence for Japanese investors in Australia’s energy sector. Despite this, CCS technology offers a promising pathway to reduce emissions from natural gas production, with infrastructure facilitating low-emission hydrogen production. Policy coherence and streamlined regulations are essential to fostering innovation and scaling up these technologies. Collaboration on CCS and hydrogen commercialisation presents opportunities for both nations to lead the energy transition. Japan’s ambitious plans to increase its domestic hydrogen supply highlight the potential for joint efforts.

Analysis of the ethical issues in authorship of collaborative research. Observations inspired by the historical case study of Gerard L. Blaes' (Blasius) claim to sole authorship of 'Anatome medullae spinalis'.

This paper discusses the historical context of collaborative research and authorship disputes, exemplified by the complex relationship between Dutch anatomist and physician Gerard L. Blaes and his East-Central European mentee, Daniel Gödtke, during the study of medulla spinalis. The study employs historical analysis to unravel the dynamics of scholarly collaboration, emphasizing the significance of mentorship in scientific progress and the communal nature of knowledge exchange. This historical analysis is based on primary sources and historical records. It underscores Blaes's strategy to circumvent public confrontations regarding the authorship of the seminal work 'Anatome medullae spinalis, et nervorum inde provenientium' (1666). As a teacher, he facilitated his student's participation in a public disputation to avert public authorship conflicts over the book. This ultimately led to the publication of two distinct versions of 'Anatome medullae spinalis.' The first one was co-authored by the mentor and his mentee, while the latter was solely attributed to the mentor. This historical narrative raises essential questions about attributing individual contributions in medical sciences, echoing concerns still pertinent in contemporary academia. Additionally, it makes visible the power dynamics inherent in faculty-students relationships and the potential repercussions of authorship disputes on scholars' reputations. By drawing parallels between historical and modern authorship dilemmas, this study contributes to ongoing discussions on equitable authorship in scientific research and publishing. It not only highlights a historical precedent for the complex dynamics of mentor-mentee collaborations and authorship disputes but also illuminates how these practices continue to influence contemporary academic and publishing customs.

The Question of Identity in Selected Writings of Sukumar Ray in Sandesh

This paper examines how identity formation in an age of change and uncertainty influenced Sukumar Ray’s writings in the children’s periodical Sandesh. Ray's exploration of individual, cultural, and national identities reveal the complexities of navigating through a colonised society with conflicting power dynamics.

Care Relationships Between Support Staff and Adults With a Learning Disability in Long-Term Social Care Residential Settings in the United Kingdom: A Systematic Literature Review

Context: Research exploring care relationships between support staff (e.g., support workers) and adults with a learning disability in long-term social care residential settings in the United Kingdom is relatively neglected. This has potential theoretical and care practice implications. Objectives: This study sought to synthesise relevant literature, expand knowledge, and identify directions for future research. We investigated five questions about care relationships and what makes them positive, exploring definitions of care relationships, relational practices and processes, barriers and facilitators to good care relationships, the impact of relationships, and restoration of disrupted relationships. Methods: Following protocol registration in PROSPERO, a systematic literature review was conducted in June–July 2021. The review was informed by official guidelines and focused on the United Kingdom, covering 41 years of relevant work. Twelve databases and five websites were searched, and experts were contacted. Forty-five reports were included and synthesised using the narrative synthesis framework. Findings: Definitions of care relationships revolved around friendship, equality, professionalism, and power. Practices and processes underlying positive relationships included knowing the person, setting boundaries, and shifting power dynamics. Barriers to positive care relationships included staff interactional patterns, attributions, and staff dilemmas, whilst facilitators included receiving training and using communication tools. Good care relationships were key to effective support and ways to restore disrupted relationships included receiving input from systemic therapy. Limitations: Literature was limited for certain review questions and more extensive for others. Only a few reports addressed care relationships as such with the rest focusing on communication or interactions. Time constraints prevented us from including more kinds of reports. The voice of residents was limited. Implications: We hope that this review contributes to and expands knowledge around care relationships and shapes directions for future research. Findings can be used by support staff, service managers, residents, trainers, advocates, regulators, and researchers.