150 research outputs found

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    Insights on the large-scale deployment of a curated Web-of-Trust: the Debian project’s cryptographic keyring

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    The Debian project is one of the largest free software undertakings worldwide. It is geographically distributed, and participation in the project is done on a voluntary basis, without a single formal employee or directly funded person. As we will explain, due to the nature of the project, its authentication needs are very strict - User/password schemes are way surpassed, and centralized trust management schemes such as PKI are not compatible with its distributed and flat organization; fully decentralized schemes such as the OpenPGP Web of Trust are insufficient by themselves. The Debian project has solved this need by using what we termed a “curated Web of Trust”. We will explain some lessons learned from a massive key migration process that was triggered in 2014. We will present the social insight we have found from examining the relationships expressed as signatures in this curated Web of Trust, as well as a statistical study and forecast on aging, refreshment and survival of project participants stemming from an analysis on their key’s activity within the keyring

    Security Proofs for Participation Privacy and Stronger Verifiability for Helios

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    The Helios voting scheme is well studied including formal proofs for verifiability and ballot privacy, but it does not provide participation privacy (i.e. it reveals who participated in the election). Kulyk, Teague and Volkamer proposed an extension to Helios that is claimed to provide ballot privacy as well as participation privacy while providing stronger verifiability than Helios. However, the authors did not prove their claims. Our contribution is to provide a formal definition for participation privacy and to prove that their claims hold

    The Diamond, November 8, 2019

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    Front Page: Dordt Student Selected as National FFA Representative; Entomology Class Inspects and Identifies Insects; Students Dedicate Senior Design Project to Haitian Orphanage News: California Wildfires Run Rampant Again; Cheating and Academic Dishonesty at Dordt; Humans vs. Zombies Returns to Dordt; Kielstra Research and Scholarship Center; Planning for PLIA; Opinion: the Prodigal Son Returns: Kanye West and Jesus Is King; Practice Pays Off: Music Departmental Recital; The Price Is Fright on Saturday Night Feature: Kill the Conversation? Chapel Series on Sexuality Creates Controversy; Dordt Professor Selected for NASA Research; Midwest Miseries to A-maize-ing Memories: The Kernel Journal; The Sneaker Obsession; Food Insecurity: Are You Hungry?; A Fishy Roommate; CORE 160 Art Trip Provides New Perspective on Art Sports: Dordt Football Keeps on Moving; Dordt Basketball Teams Jump Into New Season Arts & Entertainment: Maleficent 2: Transformed by Love; Fall/Winter 2019 Movie Preview; A Capella Group Tonic Sol-Fa Takes the Stage at B.J. Haan; 2019 Addams Family Resurrects Beloved Characters (In More Ways Than One) The Back Page: Jesus Is King Album Review; Editor\u27s Corner: Anticipating the Zirconhttps://digitalcollections.dordt.edu/dordt_diamond/1818/thumbnail.jp

    Little Village November 1 - November 14, 2017

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    https://ir.uiowa.edu/littlevillage/1230/thumbnail.jp

    How Is Energy Justice Built Into Community Choice Aggregation? A Comparative Case Study of the Lowell Community Choice Power Supply Program and Cape Light Compact, Massachusetts

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    Community Choice Aggregation represents a potential opportunity to meet climate change mitigation aims through bulk buying renewable energy, but there remain challenges to deliver energy justice for low income communities. This thesis researched how two CCA programs - the Lowell Community Choice Power Supply Program and the Cape Light Compact - are building energy justice into their mission and activities. Archival research was conducted and eleven in-person interviews took place with experts, advocates and practitioners across the two CCA programs. Questions centered around five energy justice themes - community control, community ownership, local green jobs, low income assistance, and the tension between 100% renewable energy and energy justice - corresponding to the three tenets of energy justice: 1) procedural justice; 2) distributive justice and 3) recognition justice. Research findings highlighted key structural differences between the two programs that enabled differing levels of support for low income communities. While the Lowell program was able to negotiate much lower prices for customers, there remains little in the way of low income support, and the decision-making process seemingly lacked inclusion and authentic participation. The Cape program in contrast has taken the Mass Save energy efficiency program in-house, creating a comprehensive entity that arguably goes further in meeting the needs of the community. These research findings highlight the tools available for other future CCAs in Massachusetts looking to further energy justice

    Hope as Strategy: The Effectiveness of an Innovation of the Mind.

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    abstract: Students may be situated within complex systems that are nested within each other. This complexity may also envelope institutional structures that lead to the socio-economic reification of student post-secondary opportunities by obscuring positive goals. This may be confounded by community misunderstandings about the changed world that students are entering. These changes include social and economic factors that impact personal and economic freedoms, our ability to live at peace, and the continuing trend of students graduating high school underprepared. Building on previous cycles of action research, this multi-strand mixed-methods study examined the effects of the innovation of the I am College and Career Ready Student Support Program (iCCR). The innovation was collaboratively developed and implemented over a 16-week period using a participatory action research approach. The situated context of this study was a new high school in the urban center of San Diego, California. The innovation included a student program administered during an advisory period and a parent education program. Qualitative research used a critical ethnographic design that analyzed data from artifacts, journals, notes, and the interviews of students (*n* = 8), parents (*n* = 6), and teachers (*n* = 5). Quantitative research included the analysis of data from surveys administered to inform the development of the innovation (*n* = 112), to measure learning of parent workshop participants (*n =* 10), and to measure learning, hope, and attitudinal disposition of student participants (*n* = 49). Triangulation was used to answer the studies’ four research questions. Triangulated findings were subjected to the method of crystallization to search for hidden meanings and multiple truths. Findings included the importance of parent involvement, the influence of positive goals, relational implications of goal setting and pathway knowledge on agentic thinking, and that teacher implementation of the innovation may have influenced student hope levels. This study argued for a grounded theory situated within a theoretical framework based upon Snyder’s Hope Theory and Bronfenbrenner’s Ecological System Theory. This argument asserted that influence on pathway and agency occurred at levels of high proximal process with the influence of goal setting occurring at levels of lower proximal process.Dissertation/ThesisDoctoral Dissertation Educational Leadership and Policy Studies 201

    The Post-1960s Development Of Urban Institutions And The Production Of Racial Justice Activism

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    This dissertation traces the historical development of neighborhood-level civic, economic, and political institutions since the 1960s, and shows that these institutions limit possibilities for contemporary grassroots organizing around economic issues. Using secondary and archival data, the first section of the project examines sequences of institutional development in urban neighborhoods, showing that interactions between racial justice movements, local and federal programs, philanthropy, and changing economic conditions, produced a field of neighborhood-based organizations committed to pro-capitalist—and later distinctively neoliberal—forms of development, and which construct these projects in militant discourses on racial empowerment and identity. Using ethnographic, social network, and textual analysis, the second section of the dissertation shows how 1) these institutions encourage neighborhood residents to develop ideological commitments to and material investments in neoliberal modes of economic and social practice in distressed urban neighborhoods; 2) that the wide diffusion of these commitments and investments impedes efforts to organize residents around progressive economic projects. The project also shows that, in neighborhoods with large concentrations of recently arrived immigrants, neighborhood institutions are less likely to be incorporated into neoliberal regimes, and more likely to be shaped by alternative ideologies, imported through transnational activist networks. These findings elucidate the politics of economic policy, suggesting that neighborhood-based institutions reproduce commitments to neoliberalism, supporting the political resilience of neoliberal regimes. On the other hand, the findings also suggest oppositional cultures may flourish at the neighborhood level, insofar as neighborhood institutions are incompletely incorporated into neoliberal regimes. Finally, the findings support the theoretical arguments that the urban neighborhood is a crucial site of identity and interest formation, and that neighborhood-level community development organizations are key sites of neoliberal subject formation
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