Collective Mobilization Research Articles

Nanozyme-Shelled Microcapsules for Targeting Biofilm Infections in Confined Spaces.

Bacterial infections in irregular and branched confinements pose significant therapeutic challenges. Despite their high antimicrobial efficacy, enzyme-mimicking nanoparticles (nanozymes) face difficulties in achieving localized catalysis at distant infection sites within confined spaces. Incorporating nanozymes into microrobots enables the delivery of catalytic agents to hard-to-reach areas, but poor nanoparticle dispersibility and distribution during fabrication hinder their catalytic performance. To address these challenges, a nanozyme-shelled microrobotic platform is introduced using magnetic microcapsules with collective and adaptive mobility for automated navigation and localized catalysis within complex confinements. Using double emulsions produced from microfluidics as templates, iron oxide and silica nanoparticles are assembled into 100-µm microcapsules, which self-organize into multi-unit, millimeter-size assemblies under rotating magnetic fields. These microcapsules exhibit high peroxidase-like activity, efficiently catalyzing hydrogen peroxide to generate reactive oxygen species (ROS). Notably, microcapsule assemblies display remarkable collective navigation within arched and branched confinements, reaching the targeted apical regions of the tooth canal with high accuracy. Furthermore, these nanozyme-shelled microrobots perform rapid catalysis in situ and effectively kill biofilms on contact via ROS generation, enabling localized antibiofilm action. This study demonstrates a facile method of integrating nanozymes onto a versatile microrobotic platform to address current needs for targeted therapeutic catalysis in complex and confined microenvironments.

Mobilizing Literature: Social Movements and Post-1945 US Literary Studies

Abstract: This essay proposes a movements-based method for studying the development of US literature after World War II. It argues that the cultural materialist and institutionalist frameworks that have dominated post-1945 US literary studies in recent years have systematically overlooked the role of social movements as catalysts for cultural change. Through readings of the literary magazine n+1, the archival materials of Octavia Butler, and novels by a range of other major postwar US authors, it offers an account of how the collective mobilizations of the past sixty years—from Civil Rights, the New Left, and the Women's Movement to Occupy Wall Street, Black Lives Matter, and #MeToo—have decisively shifted the contours of the US literary field.

Legal mobilization dilemmas in the Nordics - an autoethnographic reflection on the role of scholars in the asylum commission.

The present article investigates key dilemmas in collective legal mobilization initiatives in the field of asylum and migrants' rights. Focusing on my own experiences from working in the Asylum Commission - a trans-sectional mobilization initiative that ran in Sweden from 2019 to 2022, involving researchers, civil society representatives, and professionals - I analyze two central dilemmas that characterized our work. First, I consider how we collectively struggled for the legal right to asylum and through this struggle also reproduced injustices and potential border control harms which are embedded in asylum regulations. Second, I analyze how the Commission strived to provide a knowledge-based account of the consequences of legislative changes post the long summer of migration in 2015 that would have an impact on future legislation, while simultaneously taking an open stand in solidarity with people who were excluded from the legislative process; i.e., asylum seekers. The article underlines the need for sociolegal research that highlights ways to address dilemmas in legal mobilization work and offers empirical insights from collective mobilization for migrants' rights in a Northern European country.

Woman/life/freedom: The social semiotics behind the 2022 Iranian protest movement

Modern day protest movements consist of demands for social action to address entrenched issues such as government leadership and long-standing traditions and values. Driven by an initiating event that incites a collective societal outburst and mobilisation, protestors engage a range of linguistic and semiotic expressions to challenge existing discourses, increasingly platforming these messages globally through the intersection of digital technology and online social networks. The 2022 demonstrations in Iran under the protest banner Woman, Life, Freedom emerged as characteristic of modern social and political movements. Sparked by a widely circulated video showing 22-year-old Mahsa Amini collapsing in a Tehran classroom after being arrested for “improper” hijab wearing, these protests utilised social media to swiftly disseminate related content. This study examines a diverse range of protest signage shared on social media that conveys these protestors’ messages. We employ the concept of “mediational means” from mediated discourse analysis to explore the linguistic and semiotic resources employed during these protests. Our analysis draws from a corpus of protest images and digital ethnographic accounts, investigating how these resources were harnessed to challenge prevailing societal norms, particularly regarding gender and its intersections with ethnicity. We assert that the semiotic processes involved in creating and disseminating protest signage not only galvanised participants during the protests but also contributed to the formation and reinforcement of a “new” identity among the demonstrators. This newly forged identity carries profound implications not only for gender dynamics but also for broader aspects of identity within Iranian society and potentially on a global scale.

Spatial politics and struggle for hegemony: The role of Komala in the revolutionary movement of Iranian Kurdistan

The question of Kurds in Iran is a political as well as a regional issue. By applying the Gramscian spatial perspective, this paper examines how the socialist movement in Iranian Kurdistan has rethought and reshaped the collective identities of the Kurds through spatially collective mobilization. While “private spaces” were central for Komala as sites of group formation and political underground activities, after the fall of the Shah in 1979, the opening up of public spaces was of crucial importance for Komala to transform from a small organization to a social and influential current. The production and use of the public spaces enabled Komala to establish associational ties among subordinate social groups through strengthening a collective identity and political ideology. For Komala, the territoriality of the Kurdish region has been historically formed by class conflicts and class-relevant social relations in conjunction with the national question (self-determination for Kurdistan), and in relation to a specific spatial location in place, space, and scale.

Why did Taiwanese Youth Protest in 2014? Emergence of protests from the Perspective of Mobilization Structures and Shared Grievances

The purpose of the paper is to restudy the reasons for youth activism in Taiwan in 2014, which led to the so-called Sunflower Movement. The study is based on desk research and semi-structured interviews and expert interviews conducted by the authors, and in the framework of the Daybreak Project. Additionally the analysis on the social media posts during the movement was conducted. Data were analyzed through the Bert Klandermans’ model on reasons for collective mobilization. The supply side of mobilization was divided into the role of mobilizing structures and the appeal. The demand side was analyzed through: sociopolitical characteristics of the participants; social embeddedness; shared grievances and shared emotions; group identification. The paper assumes that participation in the protests was a result of mobilizational structures – student discussion groups and the sense that the authorities were violating procedural justice principles – mainly in connection with the processing of the CSSTA.

“Imagine Growing Up Thinking the US is the Best Opportunity”: Immigrant Origin Youth of Color Supporting the Black Lives Matter Movement on Twitter

Immigrant origin youth are among the largest growing population in the United States of America (U.S.), and are important political agents for social change. This study examines how these youth engage in interracial solidarity, particularly in digital spaces. This study used reflexive thematic analysis to analyze the Twitter posts of 36 immigrant origin youth (ages 18–23; 62.5% women) from African/Afro-Latine, Latine, and Asian origins. We examined their posts about the Black Lives Matter (BLM) movement and racial justice for Black Americans in 2020. We found that immigrant origin youths’ identities as racial-ethnic minorities informed their support of BLM. Further, we found racial differences in digital action such that African-origin youth focused on celebrating Blackness and calling in peers of all races, while non-African origin youth strategically amplified the work of U.S.-origin Black Americans and called in allyship in their racial-ethnic communities. Lastly, we found that African-origin youth viewed their positionality within the BLM movement differently compared to their U.S.-born Black peers due to their different relationship to chattel slavery and anti-Blackness. This study suggests that scholars and practitioners can support immigrant origin youths’ sociopolitical development by incorporating an intersectional analysis of inequities to promote collective identification and mass mobilization.

Unveiling the Legacy of Pandit Karuppan: A Critical Analysis of Jathikkummi and Balakalesam in Kerala’s Social Reform Movement

The paper entitled Unveiling the Legacy of Pandit Karuppan: A Critical Analysis of Jathikkummi and Balakalesam in Kerala’s Social Reform Movement delves into the profound impact of two seminal works, Jathikummi and Balakalesam, in catalyzing a transformative shift within the social fabric of Kerala. Emerging as responses to the entrenched caste system prevalent in Kerala society, these works served as significant milestones in the broader context of social reform movements in the region. Jathikummi and Balakalesam, attributed to Pandit Karuppan, epitomize the spirit of resistance against caste-based oppression, advocating for the rights and dignity of marginalized communities. Through a comprehensive examination of historical records, literary analyses, and socio-political contexts, this paper elucidates the multifaceted dimensions of these revolutionary texts. It explores the socio-cultural landscape of Kerala during the time of their inception, highlighting the pervasive influence of caste hierarchy on various aspects of life. Furthermore, it investigates the strategies employed Pandit Karuppan to challenge existing norms and ignite conversations around social equality and justice. Central to the discussion are the themes of education, empowerment, and collective mobilization elucidated in Jathikummi and Balakalesam. These works not only served as instruments of consciousness-raising but also as blueprints for practical activism aimed at dismantling caste-based discrimination and oppression. By critically engaging with these works, we gain valuable insights into the complexities of caste dynamics and the ongoing struggle for inclusive and egalitarian societies.

A visit generation process for human mobility random graphs with location-specific latent-variables: From land use to travel demand

This research introduces a novel mathematical framework for understanding collective human mobility patterns, integrating mathematical modeling and data analysis. It focuses on latent-variable networks to investigate the dynamics of human mobility using stochastic models. By analyzing origin–destination data, the study uncovers scaling relations and explores the economic implications of mobility patterns, particularly regarding the income elasticity of travel demand. The mathematical analysis begins with the development of a stochastic model based on inhomogeneous random graphs, constructing a visitation model with multipurpose drivers for travel demand. Through this model, the study gains insights into the structural properties and dynamic correlations of human mobility networks, deriving analytical solutions for key network metrics: visit distribution, assortativity behavior and clustering coefficient. Empirically, the study validates the model’s assumptions and reveals scaling behaviors in origin–destination flows within a region, reproducing statistical regularities observed in real-world cases. Notably, the model’s application to estimating income elasticity of travel demand provides significant implications for urban and transport economics. Overall, this research contributes to a deeper understanding of the interplay between human mobility and regional demographics and economics. It sheds light on critical scaling relations across various aspects of collective human mobility and underscores the importance of incorporating latent-variable structures into mobility modeling for accurate economic analysis and decision-making in urban and transportation planning.

Indigenous People Struggle for Damage Repair: Assessing Shadow Networks Resistance and Pursuit of Resilience in the Context of an Industrial Disaster

This study aims to understand the emergence of bottom-up social practices in shadow networks in the context of an industrial disaster. The empirical focus involves the Guarani and Tupinikim indigenous people, victims of the Fundão tailing dam rupture, one of the world’s greatest socio-environmental disasters. We adopted a qualitative approach to identify the indigenous shadow network’s agency, resistance mechanisms, and resilience activation. We interpret indigenous resistance as a way of fighting for their existence, with mechanisms crafted by collective deliberation and community mobilization. We identified the mining industry’s efforts to divide resistance and how the indigenous shadow network rebuilt resistance mechanisms through activating resilience based on indigenous values, interconnected leaderships, and social memory from their ancestral land. We thereby advance in understanding the indigenous shadow network’s agency that allows managers to intervene with on-ground actions to maintain or enhance resistance and resilience in the context of organizational studies.

Making Sense of Change: Emotive-Cognitive Reframing of Young People in Post-crisis Spain

This article explores how people interpret deep transformations, how they integrate them into their everyday meaning-making and what role emotion work plays therein. To do so, the article draws on the experiences of young people (n=68) in post-crisis Spain and their narratives of change. In the wake of the severe economic crisis of 2008, many of them had lost their jobs as well as their future prospects. They experienced a mismatch between their expectations of their (working) life and the actual opportunities on the precarious labour market. Disappointed expectations and crumbling future prospects made it necessary for them to search for explanations and coping strategies. The article proposes the concept of emotive-cognitive reframing to capture the ways in which the young people adapted their emotions, ideas and expectations and the different forms and directions this could take. It shows that emotive-cognitive reframing was a complex and embodied process of emotional and cognitive work in which existing patterns of explanation were questioned and partly replaced by new ones. If these explanations were individualistic in nature, people considered their emotions and how they dealt with them to be a personal matter. In this case, emotion work was more about appeasing and suppressing emotions rather than channelling them into action. If the explanations were systemic, though, emotion work consisted primarily of turning emotions inside out and redirecting them from the individual towards external actors and structural conditions laying the seeds for collective mobilisation.

The Nexus Between Sources of Workers’ Power in the Garment Manufacturing Industries of Lesotho and Eswatini

AbstractWorkers in the garment manufacturing industry are often subjected to violations of their rights and are exposed to low wages and difficult working conditions. In response to the exposure of these violations in the media, major fashion brands and retailers subject their suppliers to labour codes of conduct. Despite these codes of conduct being largely ineffective, this comparative case study of garment manufacturers operating from Lesotho and Eswatini illustrates that such codes provide workers and trade unions with access to bargaining leverage that they would otherwise not have. A framework with a synthesis of potential sources of workers’ power is developed and related to global production networks, collective mobilisation, the nature of the state, as well as national and transnational scales of organising. Based on historical case studies of the two countries, this paper illustrates how unions in the two countries followed different approaches to using this source of power in relation to other sources of power. These approaches were shaped by their contexts and strategic choices. Theoretically, it is argued that sources of workers’ power are analytically distinct, but are relational and operate best when seen as mutually reinforcing. The term ‘power resource nexus’ is used to frame this potential mutual reinforcement of sources of power.

Large-scale disruptive activism strengthened environmental attitudes in the United Kingdom

The 2019 London Extinction Rebellion was the first attempt by environmental protesters to create prolonged large-scale disruption in a Western capital city. The effects on public opinion were difficult to predict because protests seen as extreme can reduce support, but protests seen as justified can increase support. We studied longitudinal opinion changes in a nationally representative sample (n = 832) before, during, and after the rebellion, in conjunction with experimental analysis of the causal effects of media reports (n = 1441). The rebellion was longitudinally associated with national increases in environmental concern, and activist media increased dissatisfaction with current government action. Reports from different media sources caused activism intentions and support to move in different directions, contributing to longitudinally increased polarisation in attitudes to activism. The rebellion had minimal effects on belief in whether ordinary people can produce relevant change (based on collective efficacy and support for a Citizens’ Assembly). The rebellion thus apparently succeeded in strengthening general environmental attitudes without polarising them, and probably somewhat grew the pool of engaged activists, but did not lead to major growth in collective mobilisation or improved environmental policy.

Particle swarm optimization of electric power generation via green hydrogen considering the performance of the electrolyzer cell

The replacement of energy generation models, from fossil fuels to carbon neutral ones, requires a significant transformation in the generation and consumption of electricity. This work highlights Green Hydrogen as an essential potential to intensify the energy generation process based on renewable sources. The article presents two studies on energy generation models, via Green Hydrogen: Case (i), study of the behavior of the Electric Activation Voltage with ohmic loss influenced by the control variables Electric Current and Operating Temperature. Case (ii), study of the behavior of the Electric Activation Voltage with ohmic loss influenced by the control variables Electric Current and Operating Pressure. For both cases, a computational model stands out, the Proton Exchange Membrane electrolyzer cells, indicated for the generation of renewable energy, from Green Hydrogen. For both cases, a Bioinspired Computing methodology was applied in order to optimize the process. The Optimization technique means, among the various definitions, determining the best set of results, considering the restrictions of the studied phenomenon. Studies indicate that this strategy is increasingly intrinsic to our reality. This paper advocates Particle Swarm Optimization as a mechanism capable of finding the best set of solutions for mathematical models related to Energy Systems. The Swarm Algorithm can be represented as a set of particles that navigate through a space of solutions, where the main element of this method is the exchange of information between the particles of the population, which allows collective mobilization towards the optimal solution. In this case specifically, the values of Electrical Voltage, Electrical Current, Operating Temperature and Pressure form the Particle Examination. The results were exceptional for the Green Hydrogen energy generation system studied. The Particle Swarm Optimization Algorithm was applied to the objective function of multiple variables and satisfactorily incorporated the restrictions and conditions of the electrolysis system. The measurements obtained highlight that the Optimal Values are lower than the Average Values, for each variable analyzed in energy generation, in an electrolyzer. The solution achieved will be of great applicability in the study of energy efficiency in structures linked to this relevant category of renewable energy generation.

Climate neutrality in European heavy-duty road transport: How to decarbonise trucks and buses in less than 30 years?

The decarbonisation of heavy-duty road transport is subject to many uncertainties regarding fuel choices and the role of efficiency and demand-side measures. Moreover, the various segments of heavy-duty road transport exhibit distinctive characteristics, posing challenges in identifying a one-size-fits-all solution. In a scenario-based analysis with coupled modelling of the European energy system and its endogenous transport demand (driver training, improved logistics and collective mobility) we study the decarbonisation of European heavy-duty road transport through 2050, with a granular representation of its segments in the modelling exercise. Our modelling results show that battery electric vehicles are the key enablers of climate neutrality, representing 60 %–89 % of trucks and 79 %–96 % of buses by 2050. Yet, this important level of electrification, in a climate-neutral Europe, represent at most 4 % (320 TWh) of final electricity consumption. While shifting to electric and hydrogen vehicles brings significant fuel savings (41 %–66 %) and emission reductions (33 %–60 % cumulatively), demand-side operational measures can quickly and cost-effectively complement fuel switching, bringing up to 50 % of cumulative emission savings. The modelling results are highly sensitive to policy assumptions, especially regarding those related to the role of clean hydrogen. This calls for long-term planning with stable and clear signalling of technology choices.

Time-dependent properties of run-and-tumble particles. II. Current fluctuations.

We investigate steady-state current fluctuations in two models of hardcore run-and-tumble particles (RTPs) on a periodic one-dimensional lattice of L sites, for arbitrary tumbling rate γ=τ_{p}^{-1} and density ρ; model I consists of standard hardcore RTPs, while model II is an analytically tractable variant of model I, called a long-ranged lattice gas (LLG). We show that, in the limit of L large, the fluctuation of cumulative current Q_{i}(T,L) across the ith bond in a time interval T≫1/D grows first subdiffusively and then diffusively (linearly) with T: 〈Q_{i}^{2}〉∼T^{α} with α=1/2 for 1/D≪T≪L^{2}/D and α=1 for T≫L^{2}/D, where D(ρ,γ) is the collective- or bulk-diffusion coefficient; at small times T≪1/D, exponent α depends on the details. Remarkably, regardless of the model details, the scaled bond-current fluctuations D〈Q_{i}^{2}(T,L)〉/2χL≡W(y) as a function of scaled variable y=DT/L^{2} collapse onto a universal scaling curve W(y), where χ(ρ,γ) is the collective particle mobility. In the limit of small density and tumbling rate, ρ,γ→0, with ψ=ρ/γ fixed, there exists a scaling law: The scaled mobility γ^{a}χ(ρ,γ)/χ^{(0)}≡H(ψ) as a function of ψ collapses onto a scaling curve H(ψ), where a=1 and 2 in models I and II, respectively, and χ^{(0)} is the mobility in the limiting case of a symmetric simple exclusion process; notably, the scaling function H(ψ) is model dependent. For model II (LLG), we calculate exactly, within a truncation scheme, both the scaling functions, W(y) and H(ψ). We also calculate spatial correlation functions for the current and compare our theory with simulation results of model I; for both models, the correlation functions decay exponentially, with correlation length ξ∼τ_{p}^{1/2} diverging with persistence time τ_{p}≫1. Overall, our theory is in excellent agreement with simulations and complements the prior findings [T. Chakraborty and P. Pradhan, Phys. Rev. E 109, 024124 (2024)1539-375510.1103/PhysRevE.109.024124].

Paying for Freedom: Community Payment of Fines as Collective Resistance to Australia’s Criminalisation of Race and Class

Since colonisation, Australia’s criminal apparatus has targeted people on the basis of race and class through changing modes of legal control. This article explores two examples of collective resistance to this. In 2019, Sisters Inside’s FreeHer campaign enlisted community members to pay for the freedom of Aboriginal women imprisoned for non-payment of fines in Western Australia. Simultaneously, in the United States, bail funds enabled people to free those imprisoned due to inability to afford cash bail. In both examples, by paying for the freedom of strangers, the community inserts itself into otherwise opaque criminal processes, challenging the very reason for a person’s incarceration and disrupting the rhetorical divide between the community and the criminalised. Through the framework of demosprudence (ie, collective citizen mobilisations which are democracy-enhancing) and prison abolition, this article demonstrates the capacity for these forms of participatory resistance to contribute to transformative social and legal change.

Quantifying the relationship between mobility patterns and socioeconomic status of dockless bike-sharing users

Cycling is among the healthiest, greenest, and most affordable means of transportation for a better future city, but mobility patterns of cyclists with different income have rarely been studied due to the limitation of data availability. Newly emergent dockless bike-sharing platforms that record detailed trip information provide us a unique opportunity. Attributing to its better usage flexibility and accessibility, dockless bike-sharing is booming over the past few years worldwide and reviving the cycling fashion in cities. In this work, by exploiting massive platform-collected trip records in four diversified Chinese cities, we reveal that individual mobility patterns, including radius of gyration and average travel distance, are similar among the users with different income, indicating that human beings all follow similar physical rules. However, collective mobility patterns, in terms of average range and diversity of visitation, and commuting direction, exhibit different behaviors and spatial patterns across income categories. Hotspot locations that attract a high volume of cycling activities are quite different over groups, and locations with either a lower or higher income level have a relatively low user ratio. Cyclists from lower income groups are inclined to visit less flourishing locations across all four cities, and have a higher fraction to commute toward the city center in larger cities and away from the city center in smaller cities. Middle income groups of cyclists generally have a higher visitation diversity except in Shanghai. Our findings would be helpful on designing better promotion strategies for dockless bike-sharing platforms and toward the transition to a more inclusive and sustainable transportation.

Shortcuts and detours of environmental collective legal mobilizations: the cases of the Atrato River and the Amazon region in Colombia

AbstractColombia's Atrato River and Amazon region were declared legal entities by Colombian judges in 2016 and 2018 respectively. This set the stage for a new era of environmental litigation in Colombia, in which a number of natural entities have been granted this status. In both contrasting cases, non‐governmental organizations (NGOs) brought dramatic environmental harms to court through the special acción de tutela procedure, but did not claim a new ecocentric legal status for nature. This article asks how rights were collectively mobilized in the Atrato and Amazon cases and led to ecocentric judgments. Semi‐structured interviews were conducted in 2020 with members of NGOs and grassroots organizations involved in these two cases, revealing the emergence of grievance collectives. Through the analysis of these qualitative data, we argue for a perspective that considers the interdependence of legal mobilization and the collective as a social relationship. Collective support led to the choice of an unconventional process. However, this supported the litigation collectives and resulted in ecocentric judgments that generated challenges for the associated collectives in the post‐litigation phase. Thus, the analysis of legal mobilization and social relations in the collectives as interdependent improves the understanding of the shortcuts and detours through which complex conflicts have been presented in cases of environmental litigation, and helps to strengthen the scope and concepts of collective legal mobilization.

When Does Lethal Repression Fail? Unarmed Militancy and Backfire in Bolivia, 1982–2021

AbstractRepressive state violence, intended to tamp down collective mobilisation, sometimes inspires greater participation by protesters. When popular and/or elite reactions cause the repressing party to concede, civil resistance scholars define the failure of state repression as ‘backfire’. Some have proposed that movements’ nonviolent discipline is essential to backfire. This article demonstrates that movements that practise ‘unarmed militancy’ – forceful, combative tactics less damaging than armed violence – can also succeed through backfire, achieving policy concessions and even presidential resignations, and presents a qualitative comparative analysis of the outcomes of 48 protest events with multiple deaths in Bolivia between 1982 and 2019, and a case-based analysis of how either movements or repressors prevailed. Movements that confronted deadly repression succeeded in 57–8 per cent of cases. Whether or not protesters engaged in lethal defensive violence did not affect their likelihood of success. However, state repression of guerrillas and paramilitary groups, and during polarised partisan conflicts, was consistently successful. Current understandings of backfire need to be reconsidered in light of successful unarmed militant protest in Bolivia and numerous other locations worldwide.