536 research outputs found
Applying Event Sourcing to Occasionally Connected Systems
Get PDFAs an information storing technique, event sourcing provides some useful properties over more traditional techniques. There is value for both application developers and end-users to be able to inspect the whole history of the application states.
Event sourcing is usually used in environments with a constant network connection and a centralized database. This thesis aimed to provide necessary means to allow use of event sourcing in occasionally connected systems.
This thesis started off the research by assuming an occasionally connected, event sourced system with a distributed multi-leader database. Problems emerging from this approach were first identified, and then solved on a conceptual level by using methods from existing literature and research. At last, a fictional case study was conducted to produce a system showcasing that the concepts introduced can be applied in practice.
There were a total of three primary problems that were identified. By making event sourcing data model bi-temporal, retroactive sharing of events proved to be achievable without violating the immutability and append-only principle of event sourcing. Conflict and concurrency detection and handling emerging from moving from single leader to multi-leader replication revealed to be a well-known problem in distributed system research around data replication. Last problem was how the system can give guarantees that information it provides to external systems will not change. This proved to be solvable by applying stability properties of distributed systems to the event sourced data model, which allowed to identify a point in the event log dividing the log into stable and unstable parts. These results together provide a foundation for building occasionally connected event sourced systems
FRAMING THREATS TO HOMELAND SECURITY
Get PDFState and non-state actors like Russia and the Alt-Right use disinformation campaigns to target social and political fractures and polarize society on sensitive issues. U.S. agencies have continued to utilize variations of the same counter disinformation measures for the last 50 years. These measures have failed to keep pace with innovations by disinformation actors due to changes in the information environment and the speed of information diffusion. This thesis examines how framing theory can assist U.S. counter disinformation efforts. Framing theory proposes that the context, or frame, in which information is presented influences how individuals process the received information. In the context of this thesis, development of a strong frame consists of three elements: volume, credibility, and resonance. These elements are applied to three disinformation campaigns—Operation Denver, a Soviet campaign attributing HIV to the U.S.; #Pizzagate, a 2016 election interference campaign; and Plandemic, a non-state actor campaign targeting U.S. COVID-19 policy makers—and the countermeasures employed by U.S. agencies to each. This thesis contrasts disinformation campaigns and countermeasures using framing to demonstrate elements employed by disinformation actors and U.S. agencies to determine key differences that contribute to the successes and failures of disinformation countermeasures. This thesis proposes incorporating framing analysis into countermeasure planning and execution.Lieutenant, United States NavyApproved for public release. Distribution is unlimited
On the Untapped Value of e-HRM: A Literature Review
Get PDFThe “war for talent” is still on. Annually conducted surveys have indicated for years that one third of all organizations are unable to fill vacant job positions with suitable candidates. Responding to these and other challenges, human resource management (HRM) is expected to transform itself. General opinion holds that the HRM transformation has just begun and that the potential of IT in HRM is not yet fully exploited. Examining the value potential of IT in HRM, existing IS research predominately studies the impact of IT on HRM. We contribute by examining the reverse impact in three steps. First, we use Thompson\u27s theory of organizations in action to examine the expected impact of the HRM transformation on IT ( to-be situation). Second, we use Kohli and Grover\u27s IT value typology and review 20 years of the publication history ( as-is situation). Finally, we relate expectations to actual review findings. We find that the HRM transformation should lead to a major shift in technology type used in organizations. However, this shift is not recognized yet, which is why our literature review reveals considerable unaddressed value potential of IT in HRM. We finish the paper by outlining IS research avenues in the context of HRM
High-level Architecture and Compelling Technologies for an Advanced Web-based Vehicle Routing and Scheduling System for Urban Freight Transportation
Get PDFThe search for a more efficient routing and scheduling, the improvement of service’s level and the increasing complexity of real-world distributive contexts are contingent variables that generate the need for a system’s architecture that may be holistic, innovative, scalable and reliable. Hence, new technologies and a lucid awareness of involved actors and infrastructures, provide the basis to create a more efficient routing and scheduling architecture for enterprises
Supporting Climate Risk Management at Scale. Insights from the Zurich Flood Resilience Alliance Partnership Model Applied in Peru & Nepal
Get PDFThere has been increasing interest in the potential of effective science-society partnership models for identifying and implementing options that manage critical disaster risks “on the ground.” This particularly holds true for debate around Loss and Damage. Few documented precedents and little documented experience exists, however, for such models of engagement. How to organise such partnerships? What are learnings from existing activities and how can these be upscaled? We report on one such partnership, the Zurich Flood Resilience Alliance, a multi-actor partnership launched in 2013 to enhance communities’ resilience to flooding at local to global scales. The program brings together the skills and expertise of NGOs, the private sector and research institutions in order to induce transformational change for managing flood risks. Working in a number of countries facing different challenges and opportunities the program uses a participatory and iterative approach to develop sustainable portfolios of interventions that tackle both flood risk and development objectives in synergy. We focus our examination on two cases of Alliance engagement, where livelihoods are particularly being eroded by flood risk, including actual and potential contributions by climate change: (i) in the Karnali river basin in West Nepal, communities are facing rapid on-set flash floods during the monsoon season; (ii) in the Rimac basin in Central Peru communities are exposed to riverine flooding amplified by El Niño episodes. We show how different tools and methods can be co-generated and used at different learning stages and across temporal and agency scales by researchers and practitioners. Seamless integration is neither possible, nor desirable, and in many instances, an adaptive management approach through, what we call, a Shared Resilience Learning Dialogue, can provide the boundary process that connects the different analytical elements developed and particularly links those up with community-led processes. Our critical examination of the experience from the Alliance leads into suggestions for identifying novel funding and support models involving NGOs, researchers and the private sector working side by side with public sector institutions to deliver community level support for managing risks that may go “beyond adaptation.
Influencing Legislation for Juveniles in the Adult Judicial System: A Phenomenological Examination of Legal Advocates
Get PDFINFLUENCING LEGISLATION FOR JUVENILES IN THE ADULT JUDICIAL SYSTEM: A PHENOMENOLOGICAL EXAMINATION OF LEGAL ADVOCATES Krista Franklin Antioch University Seattle Seattle, WA This phenomenological study explores the lived experience of Washington State lawmakers and legal activists regarding their involvement in passing Washington State Senate Bill 5064 in February 2014. In response to the 2012 landmark federal Supreme Court decision, Miller v. Alabama, Senate Bill 5064 reduced the number of crimes for which juveniles could be sentenced as adults to life without parole. Six interviewees were selected from those who testified in Olympia, WA. Individual interviews were conducted in an open-ended style. Participants were asked questions about their motivation for getting involved in this bill, and asked to describe their experience. The purpose of the study is to inform those in the fields of psychology and law in order to advocate and support young offenders who are being underserved by the court system. This dissertation is available in open access at AURA, http://aura.antioch.edu/ and Ohio Link ETD Center, https://etd.ohiolink.edu/etd. Keywords: juveniles, sentencing, culpability, qualitativ
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