This paper presents a pedagogical agent designed to support students in an embodied, discovery-based learning environment. Discovery-based learning guides students through a set of activities designed to foster particular insights. In this case, the animated agent explains how to use the Mathematical Imagery Trainer for Proportionality, provides performance feedback, leads students to have diff...

American college students’ and children’s scores on two measures of the need for social approval closely follow changes in the state of the larger society, decreasing signiWcantly from 1958 to 1980 and leveling oV between 1980 and 2001 (total nD 36,004 across 203 samples of college students responding to the Marlowe–Crowne Social Desirability scale; total nD 4741 across 38 samples of children r...

This document defines new Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) options that contain a list of IP addresses and a list of domain names that can be mapped to servers providing IEEE 802.21 type of Mobility Service (MoS) (see RFC 5677). These Mobility Services are used to assist a mobile node (MN) in handover preparation (network discovery) and handover decision (network selectio...

This paper deals with the representation and solution of asymmetric Bayesian decision problems. We present a formal framework, termed asymmetric influence diagrams, that is based on the influence diagram and al­ lows an efficient representation of asymmet­ ric decision problems. As opposed to exist­ ing frameworks, the asymmetric influence di­ agram primarily encodes asymmetry at the qualitativ...

BACKGROUND/AIMS The commonly used kidney function tests have limitations, especially in thyroid dysfunction. Therefore, we studied the most commonly used kidney function tests in patients with hypo- and hyperthyroidism and after reaching euthyroidism. METHODS Prospective case series in 16 patients with thyroid dysfunction. Serum creatinine, 24-hour creatinine clearance, calculated glomerular ...

Even though the interaction of intrinsic motivation and concerns for social approval has important implications both for crowding out of intrinsic motivation through incentives and for producer choices, little is known about this interaction empirically. We present a laboratory experiment that provides evidence of a relevant interaction effect in the context of ethical consumption. We elicit a ...

We present a probabilistic model to monitor a user’s emotions and engagement during the interaction with educational games. We illustrate how our probabilistic model assesses affect by integrating evidence on both possible causes of the user’s emotional arousal (i.e., the state of the interaction) and its effects (i.e., bodily expressions that are known to be influenced by emotional reactions)....

One says that Veldkamp lines exist for a point-line geometry Γ if, for any three distinct (geometric) hyperplanes A, B and C (i) A is not properly contained in B and (ii) A ∩ B ⊆ C implies A ⊂ C or A ∩ B = A ∩ C. Under this condition, the set V of all hyperplanes of Γ acquires the structure of a linear space – the Veldkamp space – with intersections of distinct hyperplanes playing the role of l...

Cardiovascular conditions account for more medical costs than any other diagnostic category in the United States. Increasingly, economic constraints will shape policy related to health care and research. Hypertension is the most common cardiovascular condition, and despite low unit health care costs, the aggregate costs are considerable. However, the unit and aggregate costs of the complication...

In the original formulation of influence diagrams, each model contained exacly one utility node. Tatman and Shachter (1990) introduced the possibility of having super-value nodes that represent the sum or the product of their parents’ utility functions. However the algorithm they proposed for dealing with super-value nodes has two shortcomings: it requires dividing potentials when reversing arc...