Augmenting your own reality: student authoring of science-based augmented reality games

Augmented Reality (AR) simulations superimpose a virtual overlay of data and interactions onto a real-world context. The simulation engine at the heart of this technology is built to afford elements of game play that support explorations and learning in students' natural context--their own community and surroundings. In one of the more recent games, TimeLab 2100, players role-play citizens of the early 22nd century when global climate change is out of control. Through AR, they see their community as it might be nearly one hundred years in the future. TimeLab and other similar AR games balance location specificity and portability--they are games that are tied to a location and games that are movable from place to place. Focusing students on developing their own AR games provides the best of both virtual and physical worlds: a more portable solution that deeply connects young people to their own surroundings. A series of initiatives has focused on technical and pedagogical solutions to supporting students authoring their own games.     

The Profession: Comments from an Interactionist's Perspective

Abstract

The paper focuses on the structure and process of the public and private institutional regulation of race relations. This theoretical analysis posits that the public and private sectors are governed by public and private governments. The analysis reveals that the governance of race relations has shifted from the public to the private corporate bureaucracies. In that shift from the public to private governance, blacks continue to be discriminated against as a political class and for that reason they continue to make group claims and seek group remedies through enabling legislation and Affirmative Action programs.     

Ignorance as an under-identified social problem

This paper examines the persistence and intensification of ignorance in the ostensible knowledge society. Given the ubiquity of ignorance, it focuses on research and observations dealing with functional knowledge deficits that challenge the ideal of the well-informed citizen. These developments are traced back to the contradictory dynamics of the knowledge society, specifically information explosions in the knowledge economy and the resultant knowledge-ignorance paradox. The theoretical unfolding of this paradox in terms of entry and speech barriers suggests that pockets of observed public knowledge - rather than ignorance - are exceptional and require specific explanation. While ignorance among individuals, as well as experts and organizations, is a serious social problem with potentially deadly consequences, ignorance remains relatively unrecognized since it has major liabilities as a marketable issue. The conclusion points to the importance of future research on the cultural and institutional production of ignorance.     

Bayesians Should Not Resample a Prior Sample to Learn about the Posterior

It is argued in a Bayesian context in which a set of parameter values is simulated from a prior distribution, that the sampling importance resampling algorithm should not be used to resample these values so as to obtain an approximate sample from the posterior. Rather, the whole set of prior values, along with their appropriate weights, can be more gainfully employed.     

SUBSTANCE AND STYLE: AN APPRAISAL OF THE SOCIOLOGICAL LEGACY OF HERBERT BLUMER

The substance and the style of Herbert Blumer's legacy to sociology are examined. Examining the former proceeds by specifying essentials and nonessentials of a symbolic interactionist framework, and by distinguishing between Blumer's ideas that do and do not contribute toward the objective of general explanatory theory premised on the framework together with rigorous tests of such theory using a full arsenal of research methods and techniques. Examining the latter proceeds by suggesting that Blumer's style of combative and oppositional argumentation, while not without its utility, has contributed to a present-day scholasticism within symbolic interactionism that inhibits the development of the framework.     

Analyzing the Cost of Screening Selectee and Non-Selectee Baggage

Determining how to effectively operate security devices is as important to overall system performance as developing more sensitive security devices. In light of recent federal mandates for 100% screening of all checked baggage, this research studies the trade-offs between screening only selectee checked baggage and screening both selectee and non-selectee checked baggage for a single baggage screening security device deployed at an airport. This trade-off is represented using a cost model that incorporates the cost of the baggage screening security device, the volume of checked baggage processed through the device, and the outcomes that occur when the device is used. The cost model captures the cost of deploying, maintaining, and operating a single baggage screening security device over a one-year period. The study concludes that as excess baggage screening capacity is used to screen non-selectee checked bags, the expected annual cost increases, the expected annual cost per checked bag screened decreases, and the expected annual cost per expected number of threats detected in the checked bags screened increases. These results indicate that the marginal increase in security per dollar spent is significantly lower when non-selectee checked bags are screened than when only selectee checked bags are screened.