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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

On the compactness of nonmonotonic logics

Dietrich, Jens 12 July 2019 (has links)
A weak concept of compactness for nonmonotonic logics is proposed, which is suitable for several nonmonotonic logics, for which Makinsons smallest cumulative extension as well as Freund/Lehmanns canonical extension fail.
62

Logics of Collaboration: An Ethnography of Codesign in the Brazilian Amazon

Wixom, Jacob Hartt 04 August 2020 (has links)
Engineers working internationally are increasingly concerned with the social impacts of their work. New frontiers in design show promise in helping practitioners address these concerns. One of these is codesign, a practice of making stakeholders co-decision-makers in the design process. Codesign has the potential to greatly improve the social sustainability of engineered products, but some concerns remain surrounding codesign’s practicability in engineering. I explore three such concerns: that conflicting institutional logics may undermine codesign’s collaborative aspirations, that codesign can perpetuate developmental idealism, and that codesign may insufficiently account for the needs and perspectives of marginalized populations. Through more than a year of ethnographic research, including dozens of interviews and hundreds of hours of observation, I examine the realities of codesign as it is carried out by a team of engineers in the Brazilian Amazon. I find that conflicting logics do undermine codesign at times, but that the engineers are still able to explore new tools and practices for socially sustainable engineering, even in times of codesign failure. I also find that the engineers are better equipped to respond to modernizing stakeholders than they are traditional ones. This may lead to the spread of developmental idealism and the further marginalization of disadvantaged groups.
63

Suggestions for Deontic Logicians

Johnson, Cory 23 January 2013 (has links)
The purpose of this paper is to make a suggestion to deontic logic: Respect Hume\'s Law, the answer to the is-ought problem that says that all ought-talk is completely cut off from is-talk. Most deontic logicians have sought another solution: Namely, the solution that says that we can bridge the is-ought gap. Thus, a century\'s worth of research into these normative systems of logic has lead to many attempts at doing just that. At the same time, the field of deontic logic has come to be plagued with paradox. My argument essentially depends upon there being a substantive relation between this betrayal of Hume and the plethora of paradoxes that have appeared in two-adic (binary normative operator), one-adic (unary normative operator), and zero-adic (constant normative operator) deontic systems, expressed in the traditions of von Wright, Kripke, and Anderson, respectively. My suggestion has two motivations: First, to rid the philosophical literature of its puzzles and second, to give Hume\'s Law a proper formalization. Exploring the issues related to this project also points to the idea that maybe we should re-engineer (e.g., further generalize) our classical calculus, which might involve the adoption of many-valued logics somewhere down the line. / Master of Arts
64

Towards Light-Weight Probabilistic Model Checking

Konur, Savas 03 June 2014 (has links)
Yes / Model checking has been extensively used to verify various systems. However, this usually has been done by experts who have a good understanding of model checking and who are familiar with the syntax of both modelling and property specification languages. Unfortunately, this is not an easy task for nonexperts to learn description languages for modelling and formal logics/languages for property specification. In particular, property specification is very daunting and error-prone for nonexperts. In this paper, we present a methodology to facilitate probabilistic model checking for nonexperts. The methodology helps nonexpert users model their systems and express their requirements without any knowledge of the modelling and property specification languages.
65

Deontic Action Logics for Specification and Analysis of Fault-Tolerance

Castro, Pablo F. January 2009 (has links)
<p> In this thesis we develop a mathematical framework to express and reason about properties of fault-tolerant computing systems. The main idea behind this mathematical framework is to use axiomatic theories to specify systems. The standard logical operators allow us to describe the basic behavior of the system, while we use deontic predicates on actions to express prescriptions about the system's behavior. Deontic logics have proved to be useful for reasoning about legal and moral systems, where the situation is more or less similar to fault-tolerance: there exists a set of rules that states what the normal behaviours or scenarios are. Violations arise when these rules are not followed and, as a consequence, some actions must be performed to return to a normal or desirable state. We develop our own deontic logic, keeping in mind that we want to use it for specifying fault-tolerant systems. We investigate the properties of this logic, commenting on those that are relevant to the use of the logic in practice. We provide two different deductive systems; one of them is a standard (Hilbert style) deductive system, while the other one is a tableaux system, which can be applied automatically to prove properties of specifications.</p> <p> In any specification language, it is important to have at hand mechanisms which enable designers to modularize the system description; we investigate how to apply these mechanisms to the logics proposed in this thesis, and, in particular, we focus on how the modularization of specifications affects the local prescriptions of a module (or component). We study the problems that arise from the interaction between components. We show that, in some cases, we can guarantee that the locality of violations in a particular component is preserved. Some examples are provided throughout this thesis to illustrate how the ideas described below can be applied in practice. </p> / Thesis / Doctor of Philosophy (PhD)
66

Institutional Pluralism and the Organization's Response: A Case Study of Chinese Women's Ice Hockey

Li, Hongxin 05 1900 (has links)
In recent years, the sport of women's ice hockey is growing fast worldwide. Upon winning the bid to host the 2022 Winter Olympics, women's ice hockey in China started to develop rapidly. However, the development of women's ice hockey in China has encountered numerous challenges. These challenges include addressing traditional Chinese culture, gender norms, and the process of sport reform. This study used a qualitative case study methodology to examine the perspectives of Chinese women ice hockey players, coaches, club administrators, government administrators, and the parents of youth hockey players to understand how women's ice hockey navigated itself within the institutional complexity to gain legitimacy, and how the different institutional logics impacted the identities of organizations within women's ice hockey in China. An abductive grounded theory approach was used to analyze the transcriptions and archived documents. Findings indicated that there were challenges for the development of women's ice hockey in China at macro level, meso level, and micro level. Actors such as hockey administrations, professional clubs, and ice hockey coaches and players at different levels adopted multiple forms of institutional work to find out ways to incorporate institutional structures that mitigated the fact that there were multiple logics. In addition, influenced by competing logics, the organizations created collective identities to balance those logics. This study provides insights into how the actors within sport organizations create a more satisfactory environment to gain legitimacy.
67

University Knowledge Commercialisation through an Institutional Logics Perspective: The case of Oman

Awlad-Thani, Faiza S.S. January 2018 (has links)
University Knowledge Commercialisation‘ (UKC) has come to be seen as a stimulant for developing economic performance. Regardless of the increasing body of literature in the UKC, it is revealed to be undertheorized, whilst existing theories are the result of inductive theorizing based on successful KC stories within the western context. Moreover, the literature provides modest practical directions and pay insufficient attention to the role of mechanisms, such as power, mimetic isomorphism, and intermediation, in bridging differences in institutional logics between actors. These gaps inspired the study aim, which is to explore the implication of such mechanisms in bridging differences in logics within UKC institutionally emerging context, Oman. Through a qualitative, multiple case-study approach, data was collected from four contract research projects through semi-structured interviews. The first three interviews served as a pilot study, the results of which were then used to formulate the second stage which was interviews with participants from academia, industry, and government. This approach improves the internal validity of the research, and provides a rich picture of the Omani UKC emerging institutional environment. The findings suggest that the influences of power, mimetic isomorphism, and intermediation have significantly shaped bridging, though not always positively, in logics in the Omani UKC context. The findings show that adverse influences in this process included: asymmetric power relationships, mimetic isomorphism‘s simplistic view of logics convergence and negligence of institutional fragmentation, and insufficient intermediation activities. The novelty of introducing the concept of power adds a new theoretical dimension into the UKC and ILP theories. Additionally, the novelty of using case of Oman as an empirical study added new contribution into the field. In addition, this study contributes to a better understanding of the Omani policy actions with regard to shift to an effective UKC approach.
68

Efficient Reasoning Algorithms for Fragments of Horn Description Logics

Carral, David 09 May 2017 (has links)
No description available.
69

Organizing Freedom: Collaboration Between the Freedmen's Bureau and Church-Supported Charitable Organizations in the Early Years of Reconstruction

Lee, Kimberly Taylor 18 July 2019 (has links)
This case study examines why the Freedmen's Bureau, a Federal agency that existed within the War Department between 1865 and 1872, formed collaborative relationships with church-supported charitable organizations to establish schools during the Civil War Reconstruction Period in Virginia. This project examines the relationships between Freedmen's Bureau officials and the leadership of church-supported charitable organizations. Specifically, this project examines the formation of these relationships, the nature of the relationships that formed, the norms and values that shaped the relationships, and the impact those relationships had on education policy in the South. The examination of a historical federal agency through archival research methods generated findings that were consistent with current knowledge of the collaborative process. Preexisting relationships formed during the Civil War served as the foundation for collaborative relationships that formed between the Bureau and church-supported charitable organizations. These relationships were integral to the formation of schools that served formerly enslaved persons as well as other war refugees. Ultimately, political and social pressure facilitated the closing of the Bureau, but the schools remained, forming the foundation for public school systems throughout the South. Examining an extinct agency which worked alongside church-supported charitable organizations, shows that facets of collaborative governance occurred much earlier than presently identified, especially as it pertains to discrete steps in the collaboration process, specifically antecedent and initial conditions of collaboration, pre-existing relationships, and impacts of collaboration. The project also adds to the study of public administration as a field by extending the timeline of the practice of public administration. This dissertation also adds to the scholarship on the impact of race on policy implementation and administrative practice. / Doctor of Philosophy / This case study examines why the Bureau of Refugees, Freedmen, and Abandoned Lands (the Freedmen’s Bureau), a controversial federal agency that existed within the War Department between 1865 and 1872, formed collaborative relationships with church-supported charitable organizations to establish schools during the Civil War Reconstruction Period in Virginia. This project will examine the relationships between Freedmen’s Bureau officials and the leaders of various church-supported charitable organizations. Specifically, this project will examine the types of relationships that formed, the customs and values that shaped those relationships and the impact of those relationships had on education policy in Virginia. Relationships between charitable organizations and army officials formed during the Civil War and served as the foundation for relationships that formed between the Bureau and charitable aid organization. Although not unique for its time the Freedmen’s Bureau relied upon nongovernmental actors and entities in performing its functions, especially education. The schools that were established, served formerly enslaved persons as well as other war refugees and served as the foundation for the public school system across the South. Although the Freedmen’s Bureau would be abolished in 1872, the schools that were established with the help of the Bureau, remained. The fact that organizations were involved in Reconstruction-era schooling is known. That the Freedmen’s Bureau helped organizations establish schools throughout the South is known. Less is known about the extent of those relationships, however. Examining a historical and extinct agency which developed relationships with a number of church-supported charitable organizations shows that collaborative relationships occurred much earlier than we once thought.
70

From harmony to conflict: MacIntyrean virtue ethics in a Confucian tradition

Chu, Irene, Moore, G. 24 October 2019 (has links)
Yes / This paper explores whether MacIntyrean virtue ethics concepts are applicable in non-Western business contexts, specifically in SMEs in Taiwan a country strongly influenced by the Confucian tradition. It also explores what differences exist between different polities in this respect, and specifically interprets observed differences between the Taiwanese study and previous studies conducted in Europe and Asia. Based on case study research, the findings support the generalizability of the MacIntyrean framework. Drawing on the institutional logics perspective and synthesizing this with MacIntyrean concepts, the paper explains the differences between the studies largely by reference to the Confucian tradition operating at both the micro-level within firms and at the macro-level as a means of harmonizing the potentially competing institutional logics to which firms are subject. The recent weakening of this tradition, however, suggests that increased conflict may characterize the future.

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