Elemental analysis of pottery sherds provided insights on the ceramic production in the Huancabamba Valley (northern highland-Peru) and the way in which the Incas administrate the provinces. The pottery sherds from six archaeological sites selected for elemental analysis indicated the use of similar clay sources in the manufacture of pottery. The production of ceramic vessels took place at the local level without the strict control of the Inca state. The Incas built administrative structures in the Huancabamba Valley in order to maintain control of their road system, which connected the north area of Peru to Ecuador. The ceramic assemblage recovered from Inca sites does not illustrate typical Inca pottery style or decoration from the heartland. The administrative centers built by the Incas throughout the Empire provided the means to support state activities such as pottery production of local wares. In addition, ethno-historic evidence suggests that during the Inca period coastal communities were relocated to highland settlements in order to serve as officers in state facilities, or to maintain the Inca road system. These coastal communities continue producing pottery following the traditional techniques from their homeland.

Scheduling refinery operation promises a big cut in logistics cost, maximizes efficiency, organizes allocation of material and resources, and ensures that production meets targets set by planning team. Obtaining accurate and reliable schedules for execution in refinery plants under different scenarios has been a serious challenge. This research was undertaken with the aim to develop robust methodologies and solution procedures to address refinery scheduling problems with uncertainties in process parameters. The research goal was achieved by first developing a methodology for short-term crude oil unloading and transfer, as an extension to a scheduling model reported by Lee et al. (1996). The extended model considers real life technical issues not captured in the original model and has shown to be more reliable through case studies. Uncertainties due to disruptive events and low inventory at the end of scheduling horizon were addressed. With the extended model, crude oil scheduling problem was formulated under receding horizon control framework to address demand uncertainty. This work proposed a strategy called fixed end horizon whose efficiency in terms of performance was investigated and found out to be better in comparison with an existing approach. In the main refinery production area, a novel scheduling model was developed. A large scale refinery problem was used as a case study to test the model with scheduling horizon discretized into a number of time periods of variable length. An equivalent formulation with equal interval lengths was also presented and compared with the variable length formulation. The results obtained clearly show the advantage of using variable timing. A methodology under self-optimizing control (SOC) framework was then developed to address uncertainty in problems involving mixed integer formulation. Through case study and scenarios, the approach has proven to be efficient in dealing with uncertainty in crude oil composition.

This dissertation consists of three essays related to revision games. The first essay proposes and analyzes a new model that we call “revision games,” which captures a situation where players in advance prepare their actions in a game. After the initial preparation, they have some opportunities to revise their actions, which arrive stochastically. Prepared actions are assumed to be mutually observable. We show that players can achieve a certain level of cooperation. The optimal behavior of players can be described by a simple differential equation. The second essay studies a version of revision games in which revision opportunities are asynchronous across players. In 2-player “common interest” games where there exists a best action profile for all players, this best action profile is the only equilibrium outcome of the revision game. In “opposing interest” games which are 2 x 2 games with Pareto-unranked strict Nash equilibria, the equilibrium outcome of the revision game is generically unique and corresponds to one of the stage-game Nash equilibria. Which equilibrium prevails depends on the payoff structure and on the relative frequency of the arrivals of revision opportunities for each of the players. The third essay studies a multi-agent search problem with a deadline: for instance, the situation that arises when a husband and a wife need to find an apartment by September 1. We provide an understanding of the factors that determine the positive search duration in reality. Specifically, we show that the expected search duration does not shrink to zero even in the limit as the search friction vanishes. Additionally, we find that the limit duration increases as more agents are involved, for two reasons: the ascending acceptability effect and the preference heterogeneity effect. The convergence speed is high, suggesting that the mere existence of some search friction is the main driving force of the positive duration in reality. Welfare implications and a number of discussions are provided. Results and proof techniques developed in the first two essays are useful in proving and understanding the results in the third essay. / Economics

Green marketing has been a main topic of discussion for several years. Most studies conducted in this area have focused on the benefits of green marketing for a normal company. However, no studies have considered the effectiveness of green marketing by a negative brand like BP. This study aims to reveal the effectiveness of green marketing after pollution. An experiment was conducted to evaluate participants’ attitudes toward the marketing strategy. Although the results were not significant, some interesting findings were revealed and are addressed at the end of the paper. They imply that individuals with green awareness are less influenced by both green marketing and an economic-assistance strategy in BP’s case, compared to individuals with lower green awareness. Overall, all participants in this study preferred the economic-assistance strategy, which means that green marketing is not effective for a corporation involved in pollution issues. / text

In this dissertation, I investigate the impact of institutional investors on security prices and corporate policies, and offer a new perspective on the vital role that institutional investors play in the modern capital market. Specifically, on the impact on security price movements, I design a new measure of stock-level sentiment based on mutual fund publically disclosed portfolio information and provide a new dimension to better predict stock returns. A trading strategy based on the new sentiment metrics can generate an annualized alpha of 21.27%. The abnormal returns cannot be explained by the time-varying expected returns and transaction costs, and can be best explained by mutual fund overreactions. Hence, my findings can be interpreted as a new anomaly in a new era-when institutional investors are the marginal traders. On the impact on corporate policy side, I document two pieces of new empirical evidence on the importance of long-term institutional holdings: the entrenchment effect of long-term institutional holdings in the context of corporate financing decisions and the active monitoring role of long-term institutional investors in the context of international firms’ accounting qualities. Combined with previous studies which favour a long-term institutional investor, the evidence on the cost side of long-term holding I document here can serve as the first call for an optimal investment horizon for firms operating in the U.S. / Thesis (Ph.D, Management) -- Queen's University, 2012-04-11 22:22:17.627

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This thesis investigates the two major conflicting modes of interpretation applied to Mo Yan’s literary texts diachronically and synchronically in order to reveal both the aesthetic imperative and the liberating force of the British and North American literary centers in receiving literature from the periphery. After an introduction to the centers’ disparate responses to the paradigmatic shift of the local Chinese literary trend in the 1980s, the thesis continues with a theoretical discussion on reader-response theory and the uneven power relations between the literary center and the periphery. Jauss’s concept of horizon of expectation and Fish’s interpretive community are adopted to stress openness in interpretation while Casanova’s conceptualization of the world republic of letters provides the framework to study the competition among interpretive communities for the legitimacy of their respective interpretation. The study of the press reception of Mo Yan focuses on the ongoing shift of horizon of expectation from the dominating political and representational mode of interpretation to one that stresses the literary and fictional nature of literature. The study shows that the imperative in the reception of Mo Yan is the extension of the Western cultural hegemony sustained by an Orientalist dichotomy. The academic promotion in the public sphere, however, shows critics’ effort to subvert such domination by suggesting an alternative mode that brings the Chinese literary context to bear on the interpretation. In addition to this, Mo Yan’s strategic negotiation with the dominating mode of reception is analysed in my close reading of POW!. At the end of the thesis, I call for general readers to raise the awareness of the hegemonic tendency of any prevailing mode of interpretation. By asserting a certain distance, readers enable the openness in interpretation and hence possible communication among different communities.

Following the 2010 Deepwater Horizon (DWH) spill, sediment cores were analyzed from marshes at various levels of oiling to determine how deeply oil penetrated sediment in these marsh environments, and if at these sites it had quantifiably affected benthic ecosystems. Minimum mixing depths were determined from penetration of the lithogenic radionuclide 234Th, which ranged from 0.25 to 4.5 cm. Sediment accumulation rates were determined using 210Pb, with verification from 137Cs in selected cores. Lead-210 profiles revealed long-term (decadal) mixing. Bay Jimmy, Louisiana was significantly affected by the DWH oil spill, as indicated by total polycyclic aromatic hydrocarbon concentrations of up to 21,913 ppb. This is far above the level at which adverse biological effects occur (4,022 ppb). Benthic foraminifera responded to the heavy oiling by decreases to standing stock and depth of habitation relative to unoiled sites, as well as exhibiting deformities. These data clearly show that oil can be quickly mixed into salt marsh sediments, with demonstrable impacts on indigenous benthos. Further, radioisotope inventories indicated that most of the sampled sites are in a net erosional state. Should marshes containing trapped DWH oil be submerged by rising sea level, there is a great potential for the remobilization of oil.

The long-term fate of hydrocarbons in the Gulf of Mexico (GOMx) following the 2010 Deepwater Horizon oil spill has yet to be fully characterized. Elemental (% C and % N), stable isotopes (δ13Corganic), and polycyclic aromatic hydrocarbon (PAH) molecular signatures were investigated in shelf and slope sediments collected in October 2010 and 2011 to gain insight into processes affecting the distribution and fate of spilled Macondo oil. Particulate organic carbon (POC) ranged between 1.55 and 2.22 wt. % in 2010 and 0.55 and 2.06 % in 2011 while the corresponding δ13Corganic ranges were from -23.37 to -20.77 ‰ (vs. PDB) in 2010, and -22.68 to -20.75 ‰ (vs. PDB) in 2011. Ranges of total polycyclic aromatic hydrocarbon (TPAH) concentrations were from 72.57 to 7,543.53 ng/g in 2010 and 25.55 to 16,582.77 ng/g in 2011. The range of measured values represented significant deviations from previous background measurements. This provided the basis for concluding that the Macondo spill altered the “background” organic carbon and hydrocarbon signature, that Macondo oil has weathered and/or biodegraded in the year following the spill, and that a significant spatial trend of hydrocarbons extended from the Macondo well across the northern GOMx in October 2010 and 2011.

This thesis consists of four essays in resource and behavioral economics. Resource Extraction, Capital Accumulation and Time Horizon The paper shows that relaxing the standard infinite horizon assumption can explain the patterns of exhaustible resource extraction and prices for the last century. An empirical test proposes a time horizon of roughly 28 years to be most likely. Model calibration yields an oil price which fits the falling price after WWII and suggests that the sharply increasing price after 1998 is due to scarcity. Optimal Forest Rotation under Climate Change    The scenario of forests growing faster over time, due to climate change, is analyzed. It is shown numerically that ignoring future changes is highly likely to be accurate in terms of harvesting and will cause insignificant profit losses. Tragedy of the Commons versus the Love of Variety    The opposing effects of overharvesting of renewable resources when property rights are missing and increased consumption variety, both due to trade, are analyzed. Trade increases welfare if the resource has strong regenerative power. If, instead, the resource regenerates slowly, then sufficient increases in the number of trade partners harms welfare and the stock may even collapse. Correcting policies may be very harsh and still improve upon laissez faire. The Distribution of Revealed Preferences under Social Pressure    Stated preferences, such as declared political opinions, are studied when individuals make the trade off between being true to their real opinions and conforming to a social norm. In orthodox societies, individuals will tend to either conform fully or ignore the social norm while individuals in liberal societies will tend to compromise between the two extremes. The model sheds light on phenomena such as polarization, alienation and hypocrisy. Furthermore, it suggests that orthodoxy cannot be maintained under pluralism.