Maximal inequalities for fractional L\'evy and related processes

In this paper we study processes which are constructed by a convolution of a deterministic kernel with a martingale. A special emphasis is put on the case where the driving martingale is a centred L\'evy process, which covers the popular class of fractional L\'evy processes. As a main result we show that, under appropriate assumptions on the kernel and the martingale, the maximum process of the corresponding `convoluted martingale' is $p$-integrable and we derive maximal inequalities in terms of the kernel and of the moments of the driving martingale

Forward simulation of backward SDEs

We introduce a forward scheme to simulate backward SDEs and analyze the error of the scheme. Finally, we demonstrate the strength of the new algorithm by solving some financial problems numerically

Research Study: Space Shuttle Main Engine Plume Flowfield Model

The initial research effort was an in-depth analysis of the shuttle main engine plumes in an effort to improve the flowfield model and to enhance shuttle base heating equipment predictions during ascent. A prediction methodology code was developed incorporating the improved plume model into a predictive tool which could consider different trajectoreis and engine perfromance variables. Various plume flow model improvement studies were ongoing at the time of the 51-L accident. Since that time, base heating and plume methodology improvements have continued as part of the overall emphasis on Shuttle design assurance before resuming flight schedule

Contaminant Effects on Chesapeake Bay Shellfish

The paper reviews contaminant effects on Chesapeake Bay shellfish from two avenues (1) adverse biological effects on the organisms and (2) fisheries closures due to bacterial and chemical contamination. The use of shellfish to monitor anthropogenic inputs of chemical contaminants is also discussed. Fisheries closures due to bacterial contamination account for the greatest economic loss due to man\u27s activities. Kepone contamination in the James River, Virginia caused fisheries closures but has not appeared to cause biological damage to the resources. Organotin compounds from antifouling paints appear to pose a threat to Chesapeake Bay shellfish.https://scholarworks.wm.edu/vimsbooks/1056/thumbnail.jp

A program to monitor the environmental effects of shipyard expansion : A final report

Dredging and land reclamation are two of the potentially most damaging activities that man undertakes in estuarine areas. Hampton Roads, the world\u27s largest natural harbor, is a multiple use port, being a major center for fishing and shellfishing, transportation, recreation and industrial sitings. Dredging which is a necessary perpetuation for some of these activities, could be directly or indirectly detrimental to others. It is in such a multiple use situation that environmental alterations, real or potential, must be carefully planned and closely monitored. Projects of the type underway can cause changes in circulation, water depth, turbidity, and patterns qf siltation, all of which can be damaging to the living components of the estuarine system. (more ....

The Effects of Tropical Storm Agnes on the Copper and Zinc Budgets of the Rappahannock River

The metals copper and zinc were analyzed in bottom sediments (top 1 cm) from the Rappahannock River before and after Tropical Storm Agnes. By extracting the sediments with various techniques (HN03, HCl) the nature of the metal speciation can be estimated. Data show that the inorganic copper was increased by a factor of 2 to 3 in the normally saline portion of the river as a result of Agnes but returned to before-Agnes levels within one year. Metal analyses of suspended sediments collected during the Agnes flooding allows an estimate of sedimentation indicating at least 7.5 mm of new sediments at mile 40, decreasing nearly linearly to 1 mm at mile 15.https://scholarworks.wm.edu/vimsbooks/1067/thumbnail.jp

An in situ evaluation of nutrient effects in lakes

A method for performing in situ nutrient enrichment experiments on natural likeJ)liytoplankton ccmmunities was developed and evaluated. One set of experiments in which it was employed was designed to detect limiting nutrients and to provide a basis for predicting future experiment results. Productivity increased in response to all three of the treatment variables used, N, P, and EDTA, but response patterns varied from experiment to experiment. Individual species responded differently to different treatments, and interactions among the treatment variables were important in shaping the community responses to mixtures of two or three variables. The most consistent features of the productivity results were incorporated into a most probable response pattern, which was partially validated by a second series of experiments

Interdisciplinary Curricular Conversations Examining Arts and Academics: Teacher Implementation and Student Outcomes

This qualitative study examined the integration of arts and academic curricula at a performing arts school by focusing on the curriculum as it is understood and perceived by the students. The study centered on five students at a performing arts magnet school who were chosen based upon contrasts in their arts classes in order to represent a range of participation in the various performing arts. Findings indicated that students were unable to recognize the integration of arts in the teaching materials, strategies, and interaction in academic courses. Results also indicated that the more teacher-centered instructional materials and pedagogical strategies utilized in the arts courses, although less cohesive to the students, allowed the students to perceive the integration of more academic activities and behaviors in those art classes. The authors argue that the students’ familiarity with scholastic behaviors, understood by students as doing school, impacted the students’ capacity to perceive the cohesiveness of the academic curricula and recognize the integration of these behaviors and activities in the arts courses