Adaptive integral assessment package for the A2UN@ project

This paper presents a first approach of Evaluation Engine Architecture (EEA) as proposal to support adaptive integral assessment, in the context of a virtual learning environment. The goal of our research is design an evaluation engine tool to assist in the whole assessment process within the A2UN@ project, linking that tool with the other key elements of a learning design (learning task, learning resources and learning support). The teachers would define the relation between knowledge, competencies, activities, resources and type of assessment. Providing this relation is possible obtain more accurate estimations of student's knowledge for adaptive evaluations and future recommendations. The process is supported by usage of educational standards and specifications and for an integral user modelling

Multiuser detection in a dynamic environment — Part II: Joint user identification and parameter estimation

The problem of jointly estimating the number, the identities, and the data of active users in a time-varying multiuser environment was examined in a companion paper (IEEE Trans. Information Theory, vol. 53, no. 9, September 2007), at whose core was the use of the theory of finite random sets on countable spaces. Here we extend that theory to encompass the more general problem of estimating unknown continuous parameters of the active-user signals. This problem is solved here by applying the theory of random finite sets constructed on hybrid spaces. We doso deriving Bayesian recursions that describe the evolution withtime of a posteriori densities of the unknown parameters and data.Unlike in the above cited paper, wherein one could evaluate theexact multiuser set posterior density, here the continuous-parameter Bayesian recursions do not admit closed-form expressions. To circumvent this difficulty, we develop numerical approximationsfor the receivers that are based on Sequential Monte Carlo (SMC)methods (“particle filtering”). Simulation results, referring to acode-divisin multiple-access (CDMA) system, are presented toillustrate the theory.

Project AWARE Scrapbook, 2005-7

Iowa has nearly 72,000 miles of streams. With one week of camping, miles of paddling, on-going educational opportunities, and hundreds of dedicated and hard-working Iowans, Project AWARE can make a difference – one stretch of river, one week a year, one piece of trash at a time. If it seems like a vacation to the participants…it is. They just learn and improve the river as they go.

Cedar Lake Watershed Project, 2004

For years, Cedar Lake has been there for the Winterset community, providing drinking water, offering recreational opportunities, teaching students outdoors lessons and giving wildlife a home. With water quality a serious concern, it is now our turn to be there for the lake.

Project AWARE 2006 Iowa River, 2007

This monthly report from the Iowa Department of Transportation is about the water quality management of Iowa's rivers, streams and lakes.

Project AWARE Scrapbook, 2005

Iowa has nearly 72,000 miles of streams. With one week of camping, miles of paddling, on-going educational opportunities, and hundreds of dedicated and hard-working Iowans, Project AWARE can make a difference – one stretch of river, one week a year, one piece of trash at a time. If it seems like a vacation to the participants…it is. They just learn and improve the river as they go.

Cooperative Lakes Area Monitoring Project-Little Spirit Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Project Overview, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Silver Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Center Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-West Okoboji Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Lower Gar Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Lake Minnewashta, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Upper Gar Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-East Okoboji Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.