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Survey of Autonomic Computing and Experiments on JMX-based Autonomic Features
Get PDFAutonomic Computing (AC) aims at solving the problem of managing the rapidly-growing complexity of Information Technology systems, by creating self-managing systems. In this thesis, we have surveyed the progress of the AC field, and studied the requirements, models and architectures of AC. The commonly recognized AC requirements are four properties - self-configuring, self-healing, self-optimizing, and self-protecting. The recommended software architecture is the MAPE-K model containing four modules, namely - monitor, analyze, plan and execute, as well as the knowledge repository.
In the modern software marketplace, Java Management Extensions (JMX) has facilitated one function of the AC requirements - monitoring. Using JMX, we implemented a package that attempts to assist programming for AC features including socket management, logging, and recovery of distributed computation. In the experiments, we have not only realized the powerful Java capabilities that are unknown to many educators, we also illustrated the feasibility of learning AC in senior computer science courses
Fighting for Survival: USS Yorktown (CV5) Damage Control Experiences in 1942
Get PDFThis study reveals how the Pacific war changed at Coral Sea and Midway due to a little known but important cadre of sailors on USS Yorktown (CV5). Those US victories resulted from not only clever code breakers and courageous airmen but equally from the determined Damage Control (DC) crews aboard Yorktown. DC crews were the ship’s first responders. They fought fires, kept power and propulsion operable, controlled the ship’s stability, and patched her flight deck to keep aircraft flying. DC teams saved Yorktown multiple times, and their story is memorable for their contributions at Coral Sea and Midway. Without DC efforts, CV5 would not have participated in the battle of Midway. Without Yorktown, the commitment of only two American carriers (with one being virtually inexperienced) against four Japanese carriers with their skilled airmen would have yielded disaster for the United States at Midway instead of victory
Overcoming Sin: Comparing Dante’s Inferno and the New Testament to Cormac McCarthy’s Outer Dark and Child of God
Get PDFThere are many textual and thematic similarities between Dante’s Inferno and Cormac McCarthy’s Outer Dark. There are also significant textual similarities between the New Testament and McCarthy’s third novel, Child of God. Juxtaposing Outer Dark and Child of God to Inferno and the New Testament, respectively, suggests a common trope that redemption requires characters’ name and repent of sin
It\u27s All Greek To Me: Orestes 2.0
Get PDF“It’s a nightmare, really.” Orestes returns from exile to take revenge for his father’s death. From there begins a dizzying exploration into what it means to take revenge, what familial ties really mean, and what happens to a country after the long, drawn out war is finally over. Orestes 2.0 takes a bold look into these ideas and more, using Euripides’ ancient play as a touchstone and putting a contemporary spin on it by borrowing from many, many different sources. The award‐winning University of New Orleans’ production of Orestes 2.0 strives to open the world of ancient Greek to a modern audience and make them realize that there are no new problems and we have been dealing with these basic issues since time immemorial
Two Essays in Corporate Finance
Get PDFFor more than a decade, to reduce the agency problem, various ways have been examined on how to align the interest of manager with shareholders. Evidence and empirical findings are conflicting on the agency problem. Recently, deferred compensation as one incentive compensation draws the attention as a means to incentivize CEOs to make them work for the firm. However, it is still not evident if deferred compensation has effect on aligning CEOs with the firm’s goal possibly due to the issue on data. Therefore, the first essay investigates if deferred compensation has the effect on the agency problem and on the firm performance improvement after dealing with the data issue. This paper mainly aims to investigate if there is the non-linear relationship between the investment choice problem and the deferred compensation as Jensen and Meckling (1976) claim. This paper concludes that deferred compensation from NQDC table has positive and significant effect on the firm performance and the investment choice problem. More importantly, following McConnell and Servaes (1990), this paper finds the curvilinear relationship between Tobin’s Q and the deferred compensation and can confirm Jensen and Meckling (1976) theoretical application.
The second essay aims to clarify the understanding on the relationship between the firm’s cash holdings and its causes by introducing the more detailed relationship between cash holdings and macroeconomic uncertainty. While previous literature tries to explain the level of cash holdings mainly by the firm-level variables, this study considers the full impact of the macroeconomic uncertainty on the level of cash holdings by introducing the firm’s heterogeneous exposure to macroeconomic uncertainty to see if the heterogeneity can tell the difference in the change in the level of cash holdings. This paper finds that macroeconomic uncertainties measured by difference macroeconomic condition variables are significant and contribute to the change in cash holdings. Additionally, this paper shows that the firms’ different level of exposure to macroeconomic uncertainty can cause the different degree of cash holdings and that firms with the higher level of exposure have the higher level of cash holdings
It\u27s Always Better With A Good DM
Get PDFIt’s Always Better With A Good DM is about our relationship with objects and maps as a vector for fantasy. Beginning from the premise that humans understand the world via narrative, I am concerned with the loss of imagination in adulthood in lieu of ideology, which is no more real than stories of future and fantastic places
Synthesis and Topochemical Manipulation of New Layered Perovskites
Get PDFMetastable layered perovskites containing interlayer transition metals can readily be obtained by simple ion exchange reactions on receptive hosts, such as those of the Dion-Jacobson and Ruddlesden-Popper structure types. In this work, we focused on adding to the library of layered perovskites by not only creating new compounds, but by also showing their ability to be further manipulated, and by studying the stability of the series through thermal behavior studies.
The reactions with transition metal halides are particularly interesting since they often lead to novel architectures and magnetic behavior. On subsequent heat treatment, these exchange products typically decompose to thermodynamically more stable phases. The newly synthesized spin glass-like material, FeLa2Ti3O10, obtained by ion exchange of Li2La2Ti3O10 with FeCl2 at 350 °C, behaves differently. When heated to 700 °C, the compound undergoes a significant cell contraction (Δc ≈ -2.7 Å) with an increase in the oxidation state of iron present in the interlayer that not been observed before in such compounds. Efforts were also made to synthesize new series of compounds, here MSrTa2O7 (M= Co and Zn), with vacancies in the interlayer that could lead to future topochemical manipulations.
The ability to vary the composition of different phases to form solid-solutions through atomic substitution at the A or B sites with ions of similar or different charge can lead to new structures as well an enhancement of the properties of the original compound or new ones. The synthesis and characterization of the new mixed A-cation containing layered perovskite RbLaNaNb3O10, where La3+ and Na+ share the same site in the perovskite slab and RbLaCaNb2MnO10 that exhibits an ordering of the B site with Mn in the center of the perovskite slab will be presented. Further topochemical manipulation of these phases via ion exchange reactions at low temperatures (\u3c 500 °C), lead to the new series A’LaNaNb3O10 and A’LaCaNb2MnO10 where A’= H, Li, Na, K and CuCl
An Alternate Trawling Method: Reduced Bycatch and Benthic Disturbance Achieved with the Wing Trawling System
Get PDFThe Wing Trawling System (WTS) was tested as an alternative to traditional shrimp capture methods in the Gulf. Compared to an otter trawl, this trawl was conceived to reduce bycatch, retain shrimp catch, and minimize seafloor disturbance. Through seventy-one paired tows, the WTS was assessed against a standard otter trawl. The WTS was found to reduce bycatch by 63-65% and reduce shrimp catch by 30-35%. Additionally, I measured the depth of the scars produced by both trawls and quantified the turbidity of the plumes behind them. The scars left by the WTS and the otter trawl were between 9.9 cm-13.6 cm. The turbidity behind the WTS was 18.6 NTU, while the turbidity behind the otter trawl was 206.8 NTU. In conclusion, the WTS offers an alternative to an otter trawl that reduces bycatch and the impact trawling has on the seafloor but results in a significant amount of shrimp loss
Sustainable Ambient Air Quality Monitoring System
Get PDFDeterioration of air quality is a growing concern in the world. Air pollution causes serious health problems and also can sometimes result in death. In order to assess air quality, long term and continuous monitoring of pollutant levels in ambient air are needed, such monitoring is often expensive, cumbersome, and resource intensive and so the monitoring programs often fail to succeed.
This research focused on designing an ambient air monitoring system by integrating (1) low-cost sensor with a battery, (2) repurposed materials to fabricate all-weather housing for air monitors, and (3) electronics needed to download the data to an on-site secure digital (SD) card, and to push the data wirelessly to the server. This monitoring system was tested at the selected locations in Harvey and Marrero Wastewater treatment plants (WWTPs) by monitoring hydrogen sulfide (H2S) levels. Preliminary analysis was done for few days and also, the results were analyzed