Historically, credit market conditions have been shown to impact economic activity, at times severely. For instance, in the late 2000s, the United States experienced a financial crisis that seized domestic and foreign credit markets. The ensuing lack of access to credit brought about a steep decline in output and a sluggish recovery. Accordingly, policymakers commonly take steps to mitigate the effects of adverse credit market conditions and, at times, conduct unconventional monetary policy once traditional policy tools become ineffective. This dissertation is a collection of essays regarding monetary policy, the flow of credit, financial crises, and the macroeconomy. Specifically, I describe monetary policy’s impact on the allocation of credit in the U.S. and analyze the role of upstream and downstream credit conditions and financial crises on international trade in a global supply chain. The first chapter assesses the impact of monetary policy shocks on credit reallocation and evaluates the importance of theoretical transmission mechanisms. Compustat data covering 1974 through 2017 is used to compute quarterly measures of credit flows. I find that expansionary monetary policy is associated with positive long-term credit creation and credit reallocation. These impacts are larger for long-term credit and for credit of financially constrained firms and firms that are perceived as risky to the lender. This is predicted by the balance sheet channel of monetary policy and mechanisms that reduce lenders’ risk perceptions and increase the tendency to search for yield. Furthermore, I find that, on average, the largest increases in credit creation resulting from monetary expansion are to firms that exhibit relatively low investment efficiency. These estimation results suggest that expansionary monetary policy may have a negative impact on future economic growth. The second chapter evaluates the quantitative effects of unconventional monetary policy in the late 2000s and early 2010s. This was a period when the traditional monetary policy tool (the federal funds rate) was constrained by the zero lower bound. We compute credit flow measures using Compustat data, and we employ a factor augmented vector autoregression to analyze unconventional monetary policy’s impact on the allocation of credit during the zero lower bound period. By employing policy counterfactuals, we find that unconventional monetary policy has a positive and simultaneous impact on credit creation and credit destruction and these impacts are larger in long-term credit markets. Applying this technique to analyze the flows of financially constrained and non-financially constrained borrowing firms, we find that unconventional monetary policy operates through the easing of collateral constraints because these effects are larger for small firms or those with high default probabilities. During the zero lower bound period, we also find that unconventional monetary policy brings about increases in credit creation for firms of relatively high investment efficiency. The third chapter pertains to the global trade collapse of the late 2000s. This collapse was due, in part, to strained credit markets and the vulnerability of exporters to adverse credit market conditions. The chapter evaluates the impact of upstream and downstream credit conditions and the differential effects of financial crises on bilateral trade. I find that upstream and downstream sectors’ needs for external financing is negatively associated with trade flows when the exporting or importing country’s cost of credit is high. However, I find that this effect is dampened for downstream sectors. I also find that downstream sectors’ value of collateral is positively associated with trade when the cost of credit is high in the importing country. High downstream trade credit dependence coupled with high costs of credit in the importing country also cause declines in imports. There are amplifying effects of credit costs for sectors that are highly dependent on external financing when the importing or exporting country is in financial crisis. Further, the magnitude is larger when the exporting country is in financial crisis. Finally, I find that these effects on trade flows are large when the exporting country is a developed economy, but they are muted for developing economies.

More than a decade has passed since Agnew (2005) introduced his General Theory of Crime and Delinquency (GTCD). Despite this interval, GTCD remains a relatively untested theory. Drawing on previous testing efforts, the current research provides a systematic assessment of Agnew's theoretical propositions. It also provides only the second empirical examination of Cochran's (2015) extension of GTCD, which incorporates religion as a sixth distinct life domain. Nested negative binomial regression modeling and Poisson regression modeling are used to assess the effects of life domains on several diverse forms of self-reported criminal behavior at two distinct stages of development: adolescence and adulthood. Data are drawn from two waves of the second generation of the Kaplan Longitudinal and Multigenerational Study. Consistent with prior empirical tests, results provide mixed support for theoretical propositions, highlighting the complexity of Agnew’s initial theory. Specifically, general support is provided for the direct effects of both theories’ variables, indicating they are important to the explanation of crime. Also, in line with Cochran's findings, initial observed effects of religious variables on criminal behavior are reduced to non-significance when all other predictors are introduced in most regression models, hinting that the incorporation of such variables may be incongruous with Agnew's chosen method of theoretical integration. However, religious variables emerge as significant predictors of general crime during adulthood, suggesting that the relationship between these variables and crime is more complex than anticipated. Additionally, strong support is found for the proposition that the effects of life domains are primarily contemporaneous. Results offer weaker support, however, for the assertion that life domain effects are largely mediated by constraints against crime and motivations towards it. Policy implications for the creation of theoretically-informed crime prevention and intervention strategies tailored to specific developmental stage are discussed.

The first chapter evaluates the zero-leverage effect on firms' financial constraints. Moreover, using investment- and cash-to-cash-flow sensitivities as financial constraint indicators, the results suggest that unleveraged firms are expected to face lower constraints relative to leveraged firms. Lastly, the results indicate that the zero-leverage effect on firms’ financial constraints is more likely stronger for smaller firms, zero-dividend firms, firms with lower proportions of tangible assets, and growth firms. The second chapter develops a new quantitative measure that reflects the extent to which a firm complies to Shariah relative to the other firms located in a certain region at a certain time. This measure can be customized to be consistent with each investor’s objectives, constraints, and beliefs. We argue that the use of this measure is preferable to the existing use of ratio thresholds for the following two reasons. First, it is more Shariah-appropriate because it provides the Shariah-compliant investor with a clear understanding of the relative compliance status of each firm he wishes to invest in. Second, it can be incorporated into any portfolio optimization model to create a balance between improving Shariah compliance and not compromising investment returns.

Vibration-based structural health monitoring (SHM) seeks to detect, quantify, locate, and prognosticate damage by processing vibration signals measured while the structure is operational. The basic premise of vibration-based SHM is that damage will affect the stiffness, mass or energy dissipation properties of the structure and in turn alter its measured dynamic characteristics. In order to make SHM a practical technology it is necessary to perform damage assessment using only a minimum number of permanently installed sensors. Deducing damage at unmeasured regions of the structural domain requires solving an inverse problem that is underdetermined and(or) ill-conditioned. In addition, the effects of local damage on global vibration response may be overshadowed by the effects of modelling error, environmental changes, sensor noise, and unmeasured excitation. These theoretical and practical challenges render the damage identification inverse problem ill-posed, and in some cases unsolvable with conventional inverse methods. This dissertation proposes and tests a novel interpretation of the damage identification inverse problem. Since damage is inherently local and strictly reduces stiffness and(or) mass, the underdetermined inverse problem can be made uniquely solvable by either imposing sparsity or non-negativity on the solution space. The goal of this research is to leverage this concept in order to prove that damage identification can be performed in practical applications using significantly less measurements than conventional inverse methods require. This dissertation investigates two sparsity inducing methods, L1-norm optimization and the non-negative least squares, in their application to identifying damage from eigenvalues, a minimal sensor-based feature that results in an underdetermined inverse problem. This work presents necessary conditions for solution uniqueness and a method to quantify the bounds on the non-unique solution space. The proposed methods are investigated using a wide range of numerical simulations and validated using a four-story lab-scale frame and a full-scale 17 m long aluminum truss. The findings of this study suggest that leveraging the attributes of both L1-norm optimization and non-negative constrained least squares can provide significant improvement over their standalone applications and over other existing methods of damage detection.

The United States Congress mandated the Secretary of Defense develop a strategy to streamline the joint capabilities integrated development system (JCIDS). The purpose of this qualitative single case study was to explore strategies that senior U.S. Army Commanders might use to reduce the approval time for an acquisition category (ACAT) III need document in the JCIDS. Data came from historical documents and semistructured interviews of 30 ACAT III requirement writers and senior U.S. Army commanders with expertise in JCIDS. The conceptual framework was Goldratt's theory of constraints. Miles, Huberman, and Saldana's data analysis method was used to identify themes. Six themes emerged that yielded 6 possible strategies to reduce approval time: (a) define and implement an objective goal, (b) simplify the process and decrease redundancy by reducing or eliminating irrelevant levels of review, (c) determine the optimum number of reviews necessary for the desired outcome, (d) determine if the Chief of Staff of the Army should be the approving authority for an ACAT III need document, (e) determine the appropriate offices and individuals that should be consulted about the need document during the world wide review process, and (f) enhance training for JCIDS personnel participating in the ACAT III need approval process. The study findings may contribute to positive organizational and social change by potentially saving U.S. taxpayer funding and by enhancing the combat efficiency of the U.S. Army, thereby increasing the safety and security of the United States and its citizens.

Micro and small enterprise (MSE) owners in Kenya are faced with a myriad of constraints that affect their survival for longer than the first 5 years. Owners of MSEs who are unable to identify and implement strategies may not succeed in sustaining their businesses. The purpose of this multiple case study was to explore strategies owners of MSEs in Nairobi, Kenya, used to sustain their businesses for longer than 5 years. The conceptual framework for the study was the theory of constraints. Data were collected from 4 purposefully selected MSE owners in Nairobi, Kenya, through face-to-face, semistructured interviews, and review of field notes and company documents. Using thematic data analysis, the major themes that emerged were customer service, access to capital, and nearness to market. The implications of this study for positive social change include strategies for MSE owners to generate stable income for employees, new employment opportunities for job seekers, improved standards of healthcare and education for the community, and a positive lifestyle for the residents of Kenya.

Relations among job stressors, leadership style, emotional reactions to work,counterproductive work behavior (CWB), and autonomy were investigated. Participants representing a wide variety of jobs were surveyed. Results indicate that transactional leadership style is related to negative emotions and occurrence of CWB. Relationships between variables were mediated by emotions.

L’objectif de cette thèse consiste à cerner les enjeux, les contraintes et les normes qui régissent le sous-titrage cinématographique en tant qu’opération traduisante. Cette recherche se fonde sur un corpus constitué de films français, dont des comédies (romantiques) particulièrement, qui ont été tout récemment distribués dans les salles chinoises. Dans un premier temps, nous essayons de mettre en évidence, suivant l’évolution des échanges cinématographiques entre la Chine et d’autres pays, plus spécifiquement la France, les enjeux qu’un pays avec sa politique, son idéologie propre, son économie, sa société et son peuple pose à l’introduction des films étrangers ainsi qu’à leur transfert linguistique en général et à leur sous-titrage en particulier. Dans un second temps, nous tentons de démontrer, à la lumière de la théorie interprétative, qu’à l’instar de toute opération traduisante, le sous-titrage est soumis aux mêmes étapes, à savoir la compréhension du sens original, sa déverbalisation, sa réexpression dans la langue-cible, et l’analyse justificative de la solution retenue. En même temps, nous ne tardons pas à signaler les contraintes auxquelles devrait obéir le sous-titrage, qualifié de traduction contrainte ainsi que leur impact sur l’équivalence du sens. N’étant qu’une introduction à d’autres travaux de recherche sur le sous-titrage, qui reste jusque-là plutôt une activité empirique, cette étude vise à susciter plus d’intérêts de la part de la communauté scientifique, qui pourrait sortir de la marginalisation cet immense champ transdisciplinaire. / The purpose of this thesis is to identify the challenges, constraints and norms that govern film captioning as a translating operation. This research is based on a corpus of French films, including (romantic) comedies, which have recently been distributed in Chinese cinemas. At first, we try to highlight, following the evolution of the cinematographic exchanges between China and other countries, more specifically France, the challenges that a country with its politics, its own ideology, its economy, his society and his people, sets for the introduction of foreign films as well as their linguistic transfer in general and their subtitling in particular. Secondly, we try to demonstrate, in the light of the interpretative theory, that, like any translating operation, subtitling is subjected to the same stages, namely the understanding of the original meaning, its deverbalisation, its re-expression in the target language, and the justifying analysis of the chosen solution. Meanwhile, we will point out the constraints to which subtitling should be subjected, described as constrained translation, as well as their impact on the equivalence of meaning.As an introduction to other research on subtitling, which until now has been mostly an empirical activity, this study aims to generate more interest from the scientific community, which could change the marginal status of this immense transdisciplinary field.

[pt] Este trabalho identifica os fatores que impedem ou restringem o consumo de atividades de turismo por pessoas de mais idade. Investiga, também, a influência de variáveis demográficas, como idade, sexo, entre outras, na percepção destes fatores. Por meio de um questionário aplicado a pessoas com mais de 55 anos, obtém dados que possibilitaram o teste de várias hipóteses. Os resultados demonstram que os consumidores de mais idade não apresentam fortes restrições a viajar e que se sentem altamente estimulados para este tipo de lazer. Assim como em diversos estudos anteriores sobre restrições ao lazer, os principais fatores identificados foram tempo e recursos financeiros. / [en] This study identifies the factors that constrain senior consumers in their traveling consumption. It also investigates how demographic differences (age, gender, work status and companion at home) affect the perception of travel constraints. Through a sample of senior consumers (age 55+), several hypotheses were tested. Results show that most senior consumers are not likely to have a host of travel constraints and that they are actually enthusiastic towards this kind of leisure activity. As observed in earlier studies of leisure constraints, this study reaches the similar results, primarily that time and money seems the major constraints.

This thesis explores the role of comfort in adventure leisure and in recreational SCUBA diving in particular. In this chapter the study’s central elements of comfort, constraints and negotiation will be introduced. Human engagement with marine locations provides background to the evolution of SCUBA diving as a leisure activity. The concept of comfort is then introduced, with attention given to what comfort means from a range of disciplines. Following this, the use of the term comfort in adventure, leisure and tourism research is reviewed. Divers’ constraints to comfort are also briefly examined here in this introduction, to build understanding of how comfort can be experienced during adventure, and SCUBA diving. Leisure constraints-negotiation research is discussed briefly and linked to SCUBA diving experiences. The objectives of this study are then presented prior to introducing the qualitative research paradigm that guides the research, and the thesis outline.