The current air traffic concept of operations relies on a centralized process in which ground controllers are responsible for determining conflict-free trajectories. However, with new technologies such as ADS-B and GPS, aircraft could directly interact together to resolve their own conflicts in a decentralized manner. The challenge is to guarantee aircraft separation while converging to reasonably fair resolutions for all aircraft. The difficulty is that aircraft have only limited information about how the other aircraft evaluate the cost of conflict resolutions. Thus, this thesis proposes to frame decentralized conflict resolution using game theory. A collaborative decentralized conflict resolution is developed as a sequential bargaining process between the different aircraft. The goal of each aircraft is to minimize the cost associated with the conflict resolution. However, each aircraft doesn’t know the cost function and performance constraints of the other involved aircraft. In the sequential bargaining process developed, aircraft propose at each step personal trajectories to the other aircraft, corresponding to trajectories they would be ready to fly. Then they compute response trajectories, corresponding to trajectories they would have to fly to avoid the conflict if the personal trajectories were flown. If some response trajectories are cheaper than the offered personal trajectories, an agreement is reached; otherwise compromises have to be made by the aircraft by offering more expensive personal trajectories at the next step. Several pairwise conflict experiments, corresponding to different conflict geometries, were conducted to explore different ways of handling performance constraints and different ways of searching trajectories in the resolution space. Ultimately, the algorithm was demonstrated in a large scale simulation with more than a thousand aircraft flying over the Indianapolis Center, incurring more than five hundred conflicts. The traffic sets were taken from real ETMS data over five hours, to represent ‘real’ conditions. 93% of the conflicts were successfully solved by the bargaining process.

This thesis addresses the problem of toponym resolution. Given an ambiguous placename like Springfield in some natural language context, the task is to automatically predict the location on the earth's surface the author is referring to. Many previous efforts use hand-built heuristics to attempt to solve this problem, looking for specific words in close proximity such as Springfield, Illinois, and disambiguating any remaining toponyms to possible locations close to those already resolved. Such approaches require the data to take a fairly specific form in order to perform well, thus they often have low coverage. Some have applied machine learning to this task in an attempt to build more general resolvers, but acquiring large amounts of high quality hand-labeled training material is difficult. I discuss these and other approaches found in previous work before presenting several new toponym resolvers that rely neither on hand-labeled training material prepared explicitly for this task nor on particular co-occurrences of toponyms in close proximity in the data to be disambiguated. Some of the resolvers I develop reflect the intuition of many heuristic resolvers that toponyms nearby in text tend to (but do not always) refer to locations nearby on Earth, but do not require toponyms to occur in direct sequence with one another. I also introduce several resolvers that use the predictions of a document geolocation system (i.e. one that predicts a location for a piece of text of arbitrary length) to inform toponym disambiguation. Another resolver takes into account these document-level location predictions, knowledge of different administrative levels (country, state, city, etc.), and predictions from a logistic regression classifier trained on automatically extracted training instances from Wikipedia in a probabilistic way. It takes advantage of all content words in each toponym's context (both local window and whole document) rather than only toponyms. One resolver I build that extracts training material for a machine learned classifier from Wikipedia, taking advantage of link structure and geographic coordinates on articles, resolves 83% of toponyms in a previously introduced corpus of news articles correctly, beating the strong but simplistic population baseline. I introduce a corpus of Civil War related writings not previously used for this task on which the population baseline does poorly; combining a Wikipedia informed resolver with an algorithm that seeks to minimize the geographic scope of all predicted locations in a document achieves 86% blind test set accuracy on this dataset. After providing these high performing resolvers, I form the groundwork for more flexible and complex approaches by transforming the problem of toponym resolution into the traveling purchaser problem, modeling the probability of a location given its toponym's textual context and the geographic distribution of all locations mentioned in a document as two components of an objective function to be minimized. As one solution to this incarnation of the traveling purchaser problem, I simulate properties of ants traveling the globe and disambiguating toponyms. The ants' preferences for various kinds of behavior evolves over time, revealing underlying patterns in the corpora that other disambiguation methods do not account for. I also introduce several automated visualizations of texts that have had their toponyms resolved. Given a resolved corpus, these visualizations summarize the areas of the globe mentioned and allow the user to refer back to specific passages in the text that mention a location of interest. One visualization presented automatically generates a dynamic tour of the corpus, showing changes in the area referred to by the text as it progresses. Such visualizations are an example of a practical application of work in toponym resolution, and could be used by scholars interested in the geographic connections in any collection of text on both broad and fine-grained levels. / text

This thesis reports the study of the molecular and electronic structure of scandium monohalides using the technique of laser ablation/reaction with supersonic free jet expansion used for producing the target molecules and laser induced fluorescence (LIF) spectroscopy for recording their electronic transition spectrum. The scandium diatomic molecules studied in this work were scandium monoiodide (ScI) and scandium monobromide (ScBr), which were produced by the reaction of Sc atoms with 2% CH3I and 2% C2H5Br gases seeded in Ar carrier gas, respectively. The LIF spectrum of the electronic transition of ScI and ScBr were recorded in the visible and near infrared spectral region between 613 and 854 nm. The analysis of the high resolution electronic spectra of ScI and ScBr yielded molecular constants and information of electronic structures. For all the transition bands observed, rotationally-resolved transition lines were fit to a theoretical model to retrieve molecular constants for both upper and lower electronic states. For the ScI molecule, seven vibrational bands of the D1П –X^1 Σ^+ system were recorded and analyzed. Accurate molecular constants for the v = 0 – 2 levels of the D^1П state and the v = 0 – 3 levels of the X^1 Σ^+ state were obtained. The equilibrium bond lengths, re (Å), for the electronic states of ScI were determined as follows: ScI X^1 Σ^+ D^1П r_e(Å) 2.6078 2.7146 For the ScBr molecule, three electronic transition systems were recorded and analyzed, which include six vibrational bands of the C^1 Σ^+– X^1 Σ^+ system, seven vibrational bands of the e^3Δ–a^3Δsystem and two vibrational bands of the d3Φ – a3Δ system. Rotationally resolved transition lines of both Sc79Br and Sc81Br isotopes were observed and analyzed. Least-squares fitting of the measured line positions yielded accurate molecular constants for the v = 0 – 2 levels of the X^1 Σ^+ state, the v = 0 – 3 levels of the C^1 Σ^+ state, the v = 0 and 1 levels of the d3Φ state and the v = 0 – 2 levels of both e3Δ and a3Δ states, respectively. The equilibrium bond lengths, re (Å), determined for electronic states of ScBr are given as follows: ScBr X^1 Σ^+ a^3Δ C^1 Σ^+ r_e(Å) 2.3806 2.4767 2.4776 A molecular orbital (MO) energy level diagram has been used to examine the electronic configurations giving rise to the different observed electronic states of ScI and ScBr. An attempt has been made to put the MOs of all the scandium monohalides under a single picture. A comparison of the molecular constants for the different electronic states of scandium monohalides indicates a weakening of the chemical bonding between the scandium atom and the halogen atoms down the group. / published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy

Ambiguous loss refers to a loss that is unknown or undefined, making it difficult to cope with and resolve. Using a life course perspective that asserts that humans have agency to affect change in their own lives, this study focuses on an adoptee’s perceived ability to enact change in the situation surrounding the ambiguous loss that they may have experienced as a result of their adoption. Life course perspective also incorporates the concept of life trajectories, which explain how an early life experience can affect an individual over the course of his or her life. This study describes the essence of coping with adoption-related ambiguous loss from the viewpoint of adult adoptees.

<p> This study analyzes the connection between U.S. foreign policy and its mechanisms for either the resolution or protraction of conflict using the case of North Korea. This case is particularly ripe for resolution with regard to the United States&rsquo; recent &ldquo;Pivot to Asia.&rdquo; Moreover, now that North Korea is under the new leadership of the young, relatively unknown leader Kim Jong-un, this may be an essential the time to explore and implement alternative methods for ending this conflict. The purpose of this study is to enquire whether combining conflict analysis and resolution (CAR) tools and practices with alternative and dynamic soft foreign policy efforts might play a positive role in resolving this conflict. This study was conducted by analyzing current and historical documents on U.S. foreign policy, studying its desired or stated effects and comparing them to the known actual effects on the North Korean regime and its people. To help understand these effects, this study also sought the unique foreign policy perspectives, opinions, needs and desires of former North Korea refugees. The significance of this is in understanding and evaluating where CAR opportunities surface by promoting the participation of stakeholders as catalysts for change from the group of people directly affected by foreign policy: North Koreans themselves. The findings show that the U.S. foreign policy approach towards North Korea has not significantly evolved over the past 60 years. Moreover, even those North Koreans interviewed who steadfastly support a continued U.S. hard policy approach toward their former homeland conceded that positive change would also require alternative approaches that promote direct and indirect high quality contact. The findings also show even in a controlled interview environment, North Korean Refugees can change how they think, interact, and receive information, based on direct HQC and the positive repositioning of self and other. Many also had sustained contact with their loved ones still living in the North, and provide them with aid. Most North Koreans interviewed had received indirect and or direct information about the outside world when they had lived in North Korea including such things as listening to radio, watching movies or drama and receiving aid, which had a positive effect on them. While most North Koreans (still in the north) do not believe in religion, it can be an effective tool for change. The regime has continued for so long due to the structural violence and deprivation it has over society. Finally, local markets in North Korea play a key role in changing the lives of North Koreans and that North Korean diaspora can help change North Korea. The analysis provides innovative conflict resolution methods and offers potential tools and recommendations for a multi-dimensional foreign policy approach, which may affect and alter foreign policy discussions and decisions. This study, the results and recommendations are intended to be an initial step toward rethinking U.S. foreign policy for purposes of &ldquo;provention.&rdquo; </p>

Most studies on the role of international actors in peace processes tend to focus on mediation and applications of incentives and sanctions. This study deviates from these general trends and focuses on how the interests and fears of the international actors affect the progress and outcomes of a peace process and subsequently conflict transformation. Using post-2001 peace processes in Somalia as the study case, the dissertation notes that international actors‟ interventions, particularly in collapsed states, are inspired by concerns over the trans-border implications of the conflict, moral imperative or third party intervention interests. Thus, mapping the interests of the main international actors who were involved in these peace processes and analysing their impact on these peace processes‟ outcomes are the core objectives of this study. The central thesis is that assessing the impact of these interests on the progress and outcomes of the peace processes entails evaluating their effects on the transformation of the Somali actors, their relationships, their socio-political and economic institutions and the narratives and discourses that premise their interactions and social identities. The key finding of the research is that all international actors pledged their commitment to conflict resolution, peace and reconstruction in Somalia, but their competing interests and contending priorities undermined actor transformation, frustrated relationship transformation, hampered re-building of institutions and stymied transformation of conflict narratives. As a result, conflict and violence escalated. The dissertation concludes with a brief peace studies understanding of the conflict in Somalia, lessons learned from international interventions in post-2001 peace processes and some policy recommendations. Among the recommendations are harmonisation of regional interests, phased approach to resolution of the conflict, reframing of narratives and de-linking of Somali conflict issues from global discourses on terrorism. / Thesis (M.Comm)-University of KwaZulu-Natal, 2011.

This thesis focuses on the current court mediation institution in China against the worldwide movement of alternative dispute resolution in searching for more consensual and more efficient ways of resolving disputes. When the West is seeking more informality-oriented forms of dispute resolution, China, on the other side of the world, is making great efforts to improve its formal justice system rather than conventional means of dispute resolution like mediation. This thesis attempts to identify the role court mediation has played in Chinese legal history, to explore its current functions, to examine the rationale underlying the system, and to suggest its future reform. The economic analysis of law, particularly Posner's economic analysis of civil procedure and the Coase Theorem, and the ideas of Rawls' theory of justice provide theoretical underpinnings for this study. A review of these classical theories is conducted from the perspectives of efficiency and fairness. Although it is generally understood that both efficiency and fairness cannot be equally achieved by a legal policy, a good one should be concerned with both efficiency and fairness. The article concludes that the balance between efficiency and fairness should be presented in an optimal court mediation form. China's court mediation has remained an important means of dispute resolution, but left much to be improved. The author argues that the current court mediation is not as successful as it declares; it is, in fact, neither efficient nor just. The existing law governing court mediation does not provide a clear function and purpose for court mediation, nor does it consider the efficiency and fairness of court mediation. In practice, although it remains the dominant position in resolving disputes, it is merely a substitute for adjudication rather than a substantive alternative dispute resolution. By analyzing the current allocation of cases for different dispute resolutions, the author suggests that considering the overloaded court caseloads and the lack of a variety of alternative dispute resolutions in today's China, court mediation should be preserved, but thoroughly reformed, as a more acceptable and efficient means of resolving disputes. Upon its reform, this conventional means of dispute resolution with Chinese characteristics will play a positive role in the future.

This thesis examines the promises and challenges of internal dispute resolution (IDR) in the corporate workplace of Canada and the United States. The focus of inquiry is twofold: a theoretical and socio-historical study of the corporation followed by a practical analysis of dispute resolution of human or civil rights. The examination of the role of the corporation begins with a review of the statutory and jurisprudential underpinnings of the "corporate person," which have legitimized the corporation and its powerful place in society. Such power, sanctified by the law, impacts not only society at large but also employees of the corporation. Internalization of legal systems into the corporate workplace has shifted some dispute resolution responsibilities from the public to the private domain, relegating further power to the corporation. This public to private shift has deputized the corporation as an enforcer of its employees' civil rights. Two predominant theories of the corporation - the Contractarian and Communitarian - provide understanding about power relationships among the corporation and its constituents. U.S. and Canadian courts and legislatures have demonstrated a preference for the Contractarian theory, which holds that the corporation is a nexus of contracts, and that firm managers should prioritize its contract with its shareholders, governing the corporation so as to maximize shareholder wealth. A careful examination of corporate theory and governance illustrates the corporation's conflict of interest in holding shareholder interests primary while resolving employment disputes. The power differential between the corporation, as agents of its shareholder principals, and employees presents the greatest challenge in equitably resolving employment disputes. The practical aspects of internal dispute resolution in the corporate workplace focus on the potential benefits and risks to employees. In-house mediation, with certain procedural safeguards, has potential for benefits that outweigh risks to individual employees. Building on principles and structures of formal procedural fairness found in courts of law and administrative tribunals, five essential features can best guarantee fairness in IDR: voluntary participation, retention of employees' right to judicial review, prohibition against reprisal for raising the dispute, use of an external mediator, and oversight of the corporation's IDR program by a neutral, external body.

Bioactive food components containing n-3 polyunsaturated fatty acids (PUFA) and curcumin modulate multiple determinants that link inflammation to cancer initiation and progression. In this dissertation, both transgenic and dietary mouse models were used to elucidate the effect of n-3 PUFA and curcumin treatment on murine intestinal inflammation. Specifically, fat-1 transgenic mice, which convert endogenous n-6 PUFA to n-3 PUFA in multiple tissues, exhibited a reduced number of colonic adenocarcinomas per mouse (1.05 plus/minus 0.29 versus 2.12 plus/minus 0.51, P = 0.033), elevated apoptosis (P = 0.03), and a decrease in n-6 PUFA–derived eicosanoids compared with wild-type (wt) mice in an azoxymethane (AOM) - dextran sodium sulfate (DSS) model. Following a 2-week recovery period after 5 days of DSS exposure, colonic inflammation and ulceration scores returned to pretreatment levels only in fat-1 mice. In addition, fat-1 vs wt mice exhibited decreased (P < 0.05) levels of CD3 , CD4 T helper, and macrophage cell numbers in the colon. The ability of n-3 PUFA to favorably modulate the resolution of intestinal inflammation in fat-1 mice was linked to an enhancement (P < 0.05) in the percentage of colonic lamina propria (cLP) CD4 FoxP3 cells and a decrease in both splenic and cLP Th17 cells (0.8 vs 1.2 percent in spleen, 1.4 vs 1.7 percent in colon) (P < 0.05) in fat-1 mice compared to wt. These results suggest that the antitumorigenic effect of n-3 PUFA may be mediated via its anti-inflammatory properties. The combined effect of n-3 PUFA and curcumin on DSS induced colitis was assessed in C57BL/6 mice. Addition of fish oil (FO) and/or curcumin to a corn oil (CO) based diet increased animal mortality compared to CO alone (P < 0.05). Consistently, following 1 or 2 cycles of DSS treatment, both dietary FO and curcumin promoted mucosal injury/ulceration compared to CO. However, compared to other diets, FO and curcumin combined feeding enhanced the resolution of chronic inflammation and suppressed (p < 0.05) a key inflammatory mediator, NF-kB, in colon mucosa. Mucosal microarray analysis revealed that dietary FO and curcumin differentially modulated the expression of genes induced by DSS treatment. These results suggest that dietary lipids and curcumin interact to regulate mucosal homeostasis and the resolution of chronic inflammation in the colon.

The aim of this study was to investigate the cadmium (Cd) exposure level from traditional food in Fort Resolution, Northwest Territories. Cd concentration in the liver and kidney of caribou and moose exceeded the action level (1 $ mu$g/g) established by Agriculture Canada, but the frequencies of consumption of these foods were relatively low. Cd intakes from traditional food ranged from 0.01 to 1713 $ mu$g/day/person. Average Cd intakes from traditional food were estimated to be 10% and 6% of the Provisional Tolerable Weekly Intake (PTWI), 7 $ mu$g/kg body weight/person, for women and men, respectively. The major contributors to the total Cd intake on a population basis were moose liver for women, and flesh of moose and caribou for men. The average Cd inhaled from cigarette smoking was 21.1 $ pm$ 9.1 $ mu$g/day/person. Total Cd intakes from traditional food and smoking were estimated to be 24% and 20% of the PTWI for women and men, respectively. The total Cd intakes of smokers and nonsmokers were significantly different (p $<$ 0.001). The total Cd intake via market and traditional food, and cigarette smoking was 246.4 $ mu$g/week which was lower than the PTWI, 500 $ mu$g/week. Another objective of this study was to investigate an effect of food preparation on Cd speciation in food. (Abstract shortened by UMI.)