Many Concepts and Two Logics of Algorithmic Reduction

Within the program of finding axiomatizations for various parts of computability logic, it was proven earlier that the logic of interactive Turing reduction is exactly the implicative fragment of Heyting’s intuitionistic calculus. That sort of reduction permits unlimited reusage of the computational resource represented by the antecedent. An at least equally basic and natural sort of algorithmic reduction, however, is the one that does not allow such reusage. The present article shows that turning the logic of the first sort of reduction into the logic of the second sort of reduction takes nothing more than just deleting the contraction rule from its Gentzen-style axiomatization. The first (Turing) sort of interactive reduction is also shown to come in three natural versions. While those three versions are very different from each other, their logical behaviors (in isolation) turn out to be indistinguishable, with that common behavior being precisely captured by implicative intuitionistic logic. Among the other contributions of the present article is an informal introduction of a series of new — finite and bounded — versions of recurrence operations and the associated reduction operations. Presented by Robert Goldblatt     

‘Ndrangheta in Lombardy: Culture and Organizational Structure

This work aims at thoroughly studying a phenomenon that today is still not really discussed (i.e., the criminal organization called ‘Ndrangheta). We will particularly deal with the culture and organizational structure of this Mafia phenomenon and analyze its new territories of infiltration and domination (the region of Lombardy, in Northern Italy) after its migration from its original territory (the region of Calabria in Southern Italy). From the review of the existing literature on ‘Ndrangheta, we can actually point out that the contributions on the theme deal with the Mafia phenomenon, circumscribing it in its original territory, therefore mostly adopting a sociological and historical viewpoint. Up to today, nobody addressed ‘Ndrangheta outside these territorial boundaries and adopting a psychological viewpoint, which is the one this contribution starts from. In more specific terms, a text is analyzed, which is composed by the reports of the pre-trial detention order called Crimine-Infinito [Endless Crime], promoted by investigators in 2010 and so far one of the most relevant actions to fight against ‘Ndrangheta.     

The idea of human science

Abstract

Difficulties in the attempt to apply the natural science approach to human beings are exemplified through the history of psychology. Then, the genuine scientific problems that gave rise to the research setting of the laboratory, the concept of causality, and the procedure of measurement are addressed freshly in light of the characteristics of human subject matter. The logical grounds of a uniquely “human” science are thereby elaborated.     

Communion and Liberation: a Catholic movement in a multilevel governance perspective

In this article we focus on how changes in political structure influence religion. Communion and Liberation (CL) is widely known in Italy as a very important Catholic movement whose political power has been significantly increasing in the last 15 years. It is an example of a movement deeply rooted at the local level, where its activities range from grassroots meetings to business activities and service provision. In the sociological literature, CL has been studied either by focusing on its political ideology, or as a religious movement. Introducing a specific focus on the political system allows us to highlight the close relationships between the recent changes in the Italian political system and the reasons for the local success of CL. Indeed, it has been a process of mutual adaptation and influence. The political success of a Catholic movement in a Western democracy is relevant to understanding the changing role of religion in the political arena. Christian movements can play a role of substitution for traditional political movements in countries where traditional parties have become particularly weak and not capable of inspiring enthusiasm among citizens. But the story of CL in Lombardy suggests also that something is changing in the relationship between national and local politics. CL is able to play on different territorial horizons by using local, regional and national political spheres to promote its policies, mainly in the welfare sector. This is an important signal of a capacity both to adapt to a changing political system and to influence these changes. In this paper we focus on the relationships between CL and Italian politics in the Second Republic (1993 to the present day) by analysing CL representation of its political role as well as by pointing out the political opportunity structure in which its success has taken place.     

The Continuous Model of Culture: Modernity Decline—a Eurocentric Bias? An Attempt to Introduce an Absolute Value into a Model of Culture

This paper means to demonstrate the theoretical-and-methodological potential of a particular pattern of thought about culture. Employing an end-means and absolute value plus concept of reality approach, the continuous model of culture aims to embrace from one holistic standpoint various concepts and debates of the modern human, social, and political sciences. The paper revisits the fact versus value, nature versus culture, culture versus structure, agency versus structure, and economics versus politics debates and offers the concepts of the rule of law, state capitalism, a dialectical model of progress, and interpretative qualitative research, as well as of cultural diffusion, autonomy, alienation, and individuality. This model distinguishes between the ideal-symbolical and the instrumental functions of culture, sees culture as being sewn from universal binaries, and provides a certain understanding of the cognitive function of a value judgment, with positivism so far vague about the topic. It, too, suggests an extra method for investigating culture(s): the comparative literature study of culture(s) enables social science to view literature as its potential in-depth interviewee—a case for arguing for a certain conception of interdisciplinarity as well. In addition, it predicts that cultural particularism or individuality remains an essential factor of human existence. Analyzing the issue of Eurocentrism in social science, the model finds modernity’s concept of reality to be involved in “methodological” intellectualistic reductionism, characterizing it since the empiricism/rationalism origination. Systematically confusing the universal oppositions in a Eurocentric manner, intellectualism becomes a contributing factor in unfolding post-modernity.     

Tracking the line of primary gaze in a walking simulator: Modeling and calibration

This article describes a system for tracking the line of primary gaze (LoPG) of participants as they view a large projection screen. Using a magnetic head tracker and a tracking algorithm, we find the onscreen location at which a participant is pointing a head-mounted crosshair. The algorithm presented for tracking the LoPG uses a polynomial function to correct for distortion in magnetic tracker readings, a geometric model for computing LoPG from corrected tracker measurements, and a method for finding the intersection of the LoPG with the screen. Calibration techniques for the above methods are presented. The results of two experiments validating the algorithm and calibration methods are also reported. Experiments showed an improvement in accuracy of LoPG tracking provided by each of the two presented calibration steps, yielding errors in LoPG measurements of less than 2° over a wide range of head positions. Source code for the described algorithms can be downloaded from the Psychonomic Society Web archive,http://www.psychonomic.org/archive/.