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The virtual object may then be reconstructed using any algorithm derived for parallel beam projections. This virtual image object has the property that cone-beam projections through the real object are directly related to parallel-beam projections of the virtual object. The concept of a virtual image object is utilized. reconstruction algorithms in an internally consistent manner. We present a method for utilizing parallel beam. The parallel beam geometry is a convenient starting point in deriving reconstruction algorithms, both analytic and iterative, as the relation between frequency space and image space is well known. all source positions reside in a single plane) is presented. View full-textĪ framework for image reconstruction from planar tomosynthesis trajectories (i.e.

An empirical study that applied MUSTe evaluation method in quantifying a VE training system efficacy provided valuable evidence of the theoretical construct and content validity of the method.

Furthermore, it also emphasizes that quantifying VEs efficacy must reflect the perception and preferences of the users rather than the imposition of efficacy on single measures of task outcome. Importantly, MUSTe acknowledges the importance of combining holistic and analytical approaches in conducting systematic user-based evaluation. illustrate the benefits of the development of a Multi-dimensional User-centred Systematic Training Evaluation (MUSTe) method for quantifying VEs efficacy. By transforming both the conceptual and operational cohorts for training evaluation the authors. The authors discuss the implementation of these constructs in a user-centered evaluation of a VE training system. This paper explores the application of three constructs that deemed to be essential to quantify virtual environments (VE) efficacy: cognitive, skill-based, and affective learning outcomes. The author speculates that the transformaion of intimacy might be a subversive influence on modern institutions as a whole, for a social world in which the dominant ideal was to achieve intinsic rewards from the company of others might be vastly different from that which we know at the present. Premised on plastic sexuality, the pure relationship is not exclusively heterosexual it is neutral in terms of sexual orientation. It can be molded as a trait of personality, and thus become bound up with the reflexivity of the self. Plastic sexuality is decentered sexuality, freed from both reproduction and subservience to a fixed object. The author analyzes the emergence of what he calls plastic sexuality—sexuality freed from its intrinsic relation to reproduction—in terms of the emotional emancipation implicit in the pure relationship, as well as women’s claim to sexual pleasure. These changes essentially concern an exploration of the potentialities of the “pure relationship,” a relaitonship that presumes sexual and emotional equality, and is explosive in its connotations for pre-existing relations of power. The author does not attempt to analyze the gender inequalities that persist in the economic or political domains, but instead concentrates on a more hisdden personal area in which women—ordinary women, in the course of their day-to-day lives, quite apart from any political agenda—have pioneered changes of greate, and generalizable, importance.

We live today in a social order in which, for the first time in histroy, women are becoming equal to men—or at least have lodged a claim to such equality as their right. Emancipation and oppression, opportunity and risk—these have become a part of a heady mix that irresistably ties our individual lives to global outcomes and the transformation of intimacy. Sexuality as we know it today is a creation of modernity, a terrain upon which the contradictory tendencies of modern social life play themselves out in full. He sees them as intrinsic to the development of modern societies as a whole and to the broad characteristics of that development. The author suggests that the revolutionary changes in which sexuality has become cauth up are more long-term than generally conceded. The sexual revolution: an evocative term, but what meaning can be given to it today? How does “sexuality” come into being, and what connections does it have with the changes that have affected personal life more generally? In answering these questions, the author disputes many of the dominant interpretations of the role of sexuality in modern culture.