Multiple Choice Questions or MCQs are very important for e-learning. Many MCQ Tools allow us to generate MCQs very easily. However, in most of the cases they are not portable. That means MCQs generated for one system cannot be used for other unless a common format is used. So, collaboration and/or up gradation becomes a time consuming tedious task. In this paper, we will examine how a tool coul...

Why do people volunteer? What makes people give their time for others? Is volunteering really for those who are in need or volunteers themselves? While the idea of the gift and gift exchange is often used by practitioners of volunteering, it is also one of the research areas to which anthropology has largely contributed over decades. Gift exchange is a significant social phenomenon which reflec...

What are the characteristics of a good courtship gift? We address this question by modelling courtship as a sequential game. This is structured as follows: the male offers a gift to a female; after observing the gift, the female decides whether or not to accept it; she then chooses whether or not to mate with the male. In one version of the game, based on human courtship, the female is uncertai...

In vast markets of developing economies, especially in South Asia, both seasonal rural migrants and threatened urban workers constitute a bulk of the new class of working poor and are truly marginal in terms of their socio-economic status. We argue that gift-giving and gift exchanges in labour markets can perpetuate both rural and urban poverty among the working poor. In the context of working ...

Cryptography the art of secure communications, has been developed at least over 2500 years. Still at present, no perfectly secure as well as practically suitable classical or quantum cryptosystems exist. Statistically encoding the individual bit, here we present a practical key distribution technique which is absolutely secure both for classical and quantum keys. To achieve perfect security, no...

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...

Research has shown that extrinsic incentives can crowd out intrinsic motivation in many contexts. Despite this, many nonprofits offer conditional thank-you gifts, such as mugs or tote bags, in exchange for donations. In collaboration with a nonprofit, this study implements a direct mail field experiment and demonstrates that thank-you gifts reduced donation rates in a fundraising campaign. Atte...