Improved robust control of nonlinear stochastic systems using uncertain models

We introduce a technique for quantifying and then exploiting uncertainty in nonlinear stochastic control systems. The approach is suboptimal though robust and relies upon the approximation of the forward and inverse plant models by neural networks, which also estimate the intrinsic uncertainty. Sampling from the resulting Gaussian distributions of the inversion based neurocontroller allows us to introduce a control law which is demonstrably more robust than traditional adaptive controllers.

A variational conjugate gradient method for determining the fluid velocity of a slow viscous flow

The problem considered is that of determining the fluid velocity for linear hydrostatics Stokes flow of slow viscous fluids from measured velocity and fluid stress force on a part of the boundary of a bounded domain. A variational conjugate gradient iterative procedure is proposed based on solving a series of mixed well-posed boundary value problems for the Stokes operator and its adjoint. In order to stabilize the Cauchy problem, the iterations are ceased according to an optimal order discrepancy principle stopping criterion. Numerical results obtained using the boundary element method confirm that the procedure produces a convergent and stable numerical solution.

Organization and Security of the Audio and Video Archive for Unique Bulgarian Bells

AMS Subj. Classification: H.3.7 Digital Libraries, K.6.5 Security and Protection

Controversy over generic substitution

Substitution of branded medicine with a generic equivalent is already common. Robin Ferner, Warren Lenney, and John Marriott argue that concerns about UK plans to let pharmacists make the decision are unwarranted.

Vertikális korlátozások - növelik vagy csökkentik a jólétet? Érvek az irodalomból = Vertical constraints - do they increase or reduce welfare? Arguments in the literature

A vertikális korlátozások témaköre a versenypolitika és -szabályozás egyik legfontosabb, de mindenképpen legtöbb vitát generáló területe. A téma magyar irodalma elsősorban elméleti kérdésekkel foglalkozik, mellőzve a konkrét iránymutatásokat a probléma kezelésére. Először röviden bemutatjuk a vertikális korlátozások indokait és hatásmechanizmusát magyarázó teoretikus irodalmat, felsorolva azok hatékonyságnövelő hatását hangsúlyozó érvrendszereket, illetve a versenykorlátozás lehetőségét tárgyaló modelleket is. Ezután bemutatjuk, hogy milyen fontos empirikus vizsgálatokat végeztek ezen elméletek vizsgálatára, és milyen következtetések vonhatóak le a tapasztalatokból. _________ The field of vertical constraints is one of the most important in competition policy and regulation, but one that generates the most debate. Hungarian literature on the subject deals primarily with theoretical questions, refraining from offering specific guidelines for handling the problem. The paper first covers briefly the causes of the vertical constraints and the Hungarian theoretical literature on its effective mechanism, listing the system of arguments that point to its effect of increasing efficiency and the models that discuss the possibility of limiting competition. The paper then presents the major empirical examinations made of these theories and the conclusions drawn from that experience.

In My Opinion.. Legend in his Time: Lendal H. Kotschevar

Lednal H. Kotschevar is a pioneer in the food service industry. His life spans that of the 20th century and his influence in the hospitality discipline molded its growth and its directions.

The Beacon, August 28, 2009

Vol. 22, Issue 9, 12 pages

Florida International University Fall December 12,2011 Commencement Ceremony Session 1

Florida International University Commencement Ceremony December 12,2011 at US Century Bank Arena ( Session 1) Colleges graduated: College of Education College of Engineering &Computing

Workplace accommodations : potential moderators of perceived fairness

This study examined variables that may influence coworkers' acceptance of accommodations made for employees with disabilities. Agreeableness, conscientiousness, emotional stability, self-esteem, and emotional intelligence were predicted to affect the relationship between procedural justice and fairness perceptions of accommodations made for disabled workers. Approximately 400 university students read one of four accommodation scenarios and provided fairness ratings in order to test eight hypotheses. Results provided evidence that the presence of procedural justice had a direct influence on participants' fairness perceptions of implemented accommodations. Participants' individual characteristics were also directly related to fairness perceptions. Additionally, conscientiousness was found to moderate the relationship between the presence of procedural justice and fairness perceptions. Findings from this study suggest that organizations should use clear and consistent guidelines and procedures to determine and implement accommodations. Additionally, findings reinforce the importance of keeping individuals informed of the ways in which decisions are made within an organization.

Global compilation of benthic data sets I

Approaches to quantify the organic carbon accumulation on a global scale generally do not consider the small-scale variability of sedimentary and oceanographic boundary conditions along continental margins. In this study, we present a new approach to regionalize the total organic carbon (TOC) content in surface sediments (<5 cm sediment depth). It is based on a compilation of more than 5500 single measurements from various sources. Global TOC distribution was determined by the application of a combined qualitative and quantitative-geostatistical method. Overall, 33 benthic TOC-based provinces were defined and used to process the global distribution pattern of the TOC content in surface sediments in a 1°x1° grid resolution. Regional dependencies of data points within each single province are expressed by modeled semi-variograms. Measured and estimated TOC values show good correlation, emphasizing the reasonable applicability of the method. The accumulation of organic carbon in marine surface sediments is a key parameter in the control of mineralization processes and the material exchange between the sediment and the ocean water. Our approach will help to improve global budgets of nutrient and carbon cycles.

FCE LTER Mid-term Review field trip to SRS-6

http://digitalcommons.fiu.edu/fce_lter_photos/1341/thumbnail.jpg

Final Report: 1988 Iowa Department of Transportation Organizational Survey, 1988

In June 1988, 1341 employees of the Iowa State Department of Transportation (DOT) were surveyed via a mailed questionnaire. The sample was selected such that conclusions about all DOT employees, male employees, female employees, majority employees; minority employees, employees under age 40, and employees 40 years of age or older could be made. These sampling characteristics were chosen in order to facilitate comparisons between current DOT employee attitudes and employee attitudes evaluated in 1984. In addition, the sample size and response rates were sufficiently high that conclusions could be made about each of the six districts, the Ames Highway Division, and the Ames complex, excluding the Highway Division. Altogether fifty-five percent (or 739) questionnaires were· returned. Thirty additional employees voluntarily completed the survey, resulting in a final sample size of 769. The survey covered topics related to job satisfaction, work environment or climate, skill utilization, sexual harassment, communication and information adequacy, and morale. The first four topics were evaluated in 198- while the last two were unique to this survey.