This paper presents our recent work with the Generalized Intelligent Framework for Tutoring (GIFT) for authoring tutors and training systems in concert with already developed external applications that provide a wide variety of educational experiences. In this paper, we describe our efforts to extend the GIFT system to develop metacognitive tutoring support for UrbanSim, a turnbased simulation ...

Fairness is a strong concern as shown by dictator and ultimatum experiments. Efficiency, measured by the sum of individual payoffs, is a potentially competing concern in games such as the prisoners’ dilemma. In our experiment participants can increase efficiency by gift giving. In the one-sided treatment this is only possible for one of the two partners. The two-sided treatment allows for mutua...

In the past, gift-giving has interested mainly anthropologists because it was taken to be a primitive mode of exchange. Recent contributions of economists acknowledge however that gift-giving is still present in modern exchange economies. In this paper gifts are characterized by motivations. Two main features of gift giving are to be explained: (in-)adequacy and (non-)reciprocity. It is argued ...

The aim of this paper to explain gift-giving by means of social approval. In a simple framework we are able to account for a number of stylized facts. These are that gift-giving is often reciprocal, that gifts tend to be inadequate, and that gift-giving is sometimes reduced after a monetary compensation is o¤ered. The implication for the interaction between gift-giving and the market institutio...

Various techniques constitute assisted reproduction, one of which is gamete intra-fallopian transfer (GIFT). The first example of GIFT involved primates during the 1970s, however, the technology was unsuccessful until 1984 when an effective GIFT method was invented by Ricardo Asch [4] at the University of Texas Health Sciences Center [5] and the procedure resulted in the first human pregnancy [...

CRITICALCARENURSE Vol 26, No. 2, APRIL 2006 101 John Edwards is the clinical administrator for Gift of Life Donor Program in Philadelphia, Pa, overseeing all clinical aspects of organ and tissue recovery, and a faculty member for the Gift of Life Institute, Philadelphia, providing training and mentoring for healthcare organizations nationally. Patti Mulvania oversees the clinical education prog...

CONTEXT Throughout the last decade a number of studies have been conducted to examine academic-industry research relationships. However, to our knowledge, no studies to date have empirically examined academic scientists' experience with research-related gifts from companies. OBJECTIVE To examine the frequency, importance, and potential implications of research-related gifts from companies to ...

Two experiments examine the process by which free gift promotions serve as a source of information about the underlying value of the product offered as a free gift. The value-discounting hypothesis argues that by virtue of being offered as a free gift, products will be valued less as evinced by lower purchase intentions and a lower price that consumers are willing to pay for them. Conditions th...

Recommender systems try to facilitate the decision making process of users, by recommending products such as movies, music and news articles. This work uses a user based recommender system to predict redemption probabilities of different gift cards. That is, the probability that a user redeems a gift card in a store, given that he or she receives it. This work is a base for ranking gift cards i...

An experiment was conducted to determine the effectiveness of three invitation and incentive combinations in a web-based survey. A stratified convenience sample of 434 researchers who were target users of a collaboratory for earthquake engineering was randomly divided into three experimental conditions: (a) a $5 bill sent with the survey instructions via first class mail, (b) a $5 gift certific...