The system GLS, which is a modal sequent calculus system for the provability logic GL, was introduced by G. Sambin and S. Valentini in Journal of Philosophical Logic, 11, 311–342,, and in 12, 471–476,, the second author presented a syntactic cut-elimination proof for GLS. In this paper, we will use regress trees in order to present a simpler and more intuitive syntactic cut derivability proof for GLS1, which is a variant of GLS without the cut rule.

Jude Edeh ABSTRACT: The challenge faced with the proliferation of various kinds of cognitivism is the difficulty of providing a straightforward characterization of moral realism and antirealism. In light of this tension, I identified a problem in Sayre-McCord’s way of specifying the criteria of moral realism. Furthermore, I provided a framework that characterized the moral ….

Collaborative Virtual Environments (CVEs) are unique spaces that defy materialist interpretations of space and place. In drawing upon Edward Soja’s work of spatiality, CVEs can be considered as thirdspace, a space that has as much relevance as that typified by our physical, or ‘real,’ existence. Virtual space undermines the rigid polemic of the ‘real’ and ‘imaginary’ by revealing lived experience as a combination of both real and imagined experience. The virtual illuminates experience as a relativist combination of perception and interpretation (...) that inhabits both the corporeal and the virtual realms. Using the example of Second Life’s Lost Gardens of Apollo this article will illuminate the fluidity of real and imagined place through an environment of rich visual experience. Inaddition, such spaces will be discussed as places of potential social and political reconfiguration by challenging the traditional socio-cultural and historical aspects of space. (shrink)

Publication date: 11 June 2018 Source: Author: Jude Nwafor Eze, Umar Aliyu, Abdulmalik Alhaji-Baba, Muhammad Alfa This research evaluates the farmers’ vulnerability to climate change in Niger State. Strategies for reducing the effect of climate change have regularly been made without experimental foundations and adequate information on farmers’ vulnerability to climate change in the study area. Thus, integrated farmers’ vulnerability assessment approach was employed by classifying socioeconomic and biophysical indicators of vulnerability into adaptive capacity, sensitivity and exposure to determine (...) the farmers’ vulnerability to climate change. This is based on the Intergovernmental Panel on Climate Change’s definition of vulnerability. The study adopted a survey design and the method utilized for the study was questionnaire administered to 400 households in the study area. The results indicate that the farmers’ vulnerability was low in zone A with a mean index of 2.86, very low in zone B with a mean index of 3.74, and high in zone C with a mean index of 1.95. It is recommended that measures should be taken to integrate climate change adaptation into Niger State development process. These measures should include improvement in adoption of good agricultural practices. (shrink)

Cognitive control of physical activity and sedentary behavior is receiving increased attention in the neuroscientific and behavioral medicine literature as a means of better understanding and improving the self-regulation of physical activity. Enhancing individuals’ cognitive control capacities may provide a resilient means to increase physical activity and reduce sedentary behavior. First, this paper reviews emerging evidence of the antecedence of cognitive control abilities in successful self-regulation of physical activity, and in precipitating self-regulation failure that predisposes to sedentary behavior. We then (...) highlight the brain networks that may underpin the cognitive control and self-regulation of physical activity, including the default mode network, prefrontal cortical networks and brain regions and pathways associated with reward. We then discuss research on cognitive training interventions that document improved cognitive control and that suggest promise of influencing physical activity regulation. Key cognitive training components likely to be the most effective at improving self-regulation are also highlighted. The review concludes with suggestions for future research. (shrink)

Publication date: 15 October 2018 Source: Author: Jude Nwafor Eze, Coleen Vogel, Philip Audu Ibrahim Flood is known to cause devastating livelihood impacts, suffering and economic damages. To reduce the impact of floods, it is very important to identify and understand the socio-economic factors that determine people’s ability to cope with stress or change. Consequently, the study assesses the social vulnerability of the households to floods in Niger State, in order to provide the empirical evidence necessary for flood adaptation (...) policies and strategies in the state. The data for the research were obtained from the household survey and Dartmouth Flood Observatory. The data obtained were analysed using descriptive and statistical analysis. The results show that flood events in the study area were caused by heavy rainfall, compounded by the opening of the Shiroro dam gate to release the excess flood in the reservoir. Moreover, results of Student “t” test and One-Way Analysis of Variance on socio-economic characteristics show that households’ major economic activities, educational status, household size, income distribution, and membership of cooperative society were significant at p 10, do not belong to cooperative society and earn less that N21000 per month have higher mean frequency, thus, the predominant households were, therefore, farmers, illiterate, have large family size, poor, and have no access to loan. Thus, the socio-economic characteristics of the households in the study area contribute to their vulnerability to floods by reducing their coping capacity. Based on the results of the assessment, it is recommended that measures are taken to mainstream flood adaptation into the development process. (shrink)

By examining selected works by Stephen Gaukroger, Alfred North Whitehead, Lynn White, Jr., Benjamin Farrington, and Paul Gans, the author discusses the formation of Western culture and the intellectual tools and the social conditions that contributed (and still contribute) to its being. He concludes that a metaphysics and a realistic epistemology—based on an ancient Greek confidence in the human intellect, in its ability to reason to truths that acknowledge the immaterial character of human intellection—is required for the West to retain (...) its identity and develop its own culture. (shrink)

Structural Injustice has become a hugely important concept in the field of political theory with the work of Iris Marion Young central to debates on what it is, what motivates it and how it should be addressed. In this article, I focus on a particular thread in Young’s account of structural injustice which I argue is all too often overlooked - the untraceability of structural injustice. This is not only a constant theme in Young’s account of structural injustice, it is, (...) in fact, a defining feature. By ‘untraceable’, Young means that structural injustice is distinct from other sorts of injustices for which there is a traceable agent at fault – these sorts of faut-based injustices fall under what Young calls the ‘liability model of injustice’. For the purposes of exploring the concept of structural injustice, I follow the logic of the claim that structural injustice is untraceable to see where it takes us in conversation with Young’s critics. I conclude that Young’s account is not only defensible with some clarification and development but vital politically. That said, I also find Young’s account of political responsibility for structural injustice wanting and accordingly I propose a way of understanding what I see as a dynamic transition from structural to fault-based injustices which I argue Young’s more ‘static’ account fails to accommodate. This is important, I suggest, for thinking about the ways in which responsibility for different forms of injustice operate and change. _Contemporary Political Theory_ (2023). https://doi.org/10.1057/s41296-023-00634-4. (shrink)

How holographic patterns of information underlie our physical reality.

This paper defends a normative basis for entrepreneurial ventures, and draws the conclusion that any enterprise, insofar as it is reasonable, has in final analysis to be a (free) gift to promote good. Building on Herbert Simon's idea of "satisficing" and developing it in line with axiological insights of the new classical natural law theory, this paper makes the argument that a choice to proceed reasonably in any entrepreneurial venture will be guided by rationality that is bounded. Bounded rationality entails (...) that the various end-values or goals of the venture will be incommensurable, and this implies that (1) the enterprise need not be locked in on promoting merely one value, such as profits, and (2) a choice to aim at one or more goals will be a personal (free) gift, which is ethically valuable. This paper has appeared in Spanish translation as El don personal en las empresas sanas: racionalidad limitada, valores incommensurables y agencia economica in Revista Empresa y Humanismo, Vol. XI no. 1 (2008), pp. 67-88, published by the Institute for Business and Humanism, University of Navarra, Spain. Permission granted to reproduce/publish the original English version here and elsewhere. (shrink)

Interpretations -- Interpreting the Middle Ages -- Interpreting modernity -- Interpreting Islam -- The prophetic voice of Von Hayek -- Benedict XVI -- The future Benedict XVI at Subiaco -- The jurisprudence of Benedict XVI -- Benedict on the nature of scientific enquiry -- Benedict on cultural identity -- Benedict XVI: an intellectual profile -- The philosophical enterprise -- One hundred years of philosophy -- The Catholic philosopher and the Catholic university in North America -- Aristotle in North America -- (...) Escaping the Cartesian trap: retrieving realism with Dreyfus, Taylor, and Yves Simon -- The present and the future -- The impact of Vatican II -- Socialist man -- The natural basis of the theological virtue of hope. (shrink)

This paper is a review of the book: James V. Schall, The Universe We Think In (Washington, D.C.: The Catholic University of America Press, 2019). The author discusses the reasons and consequences of modern philosophy’s propensity to neglect the innate or purposeful direction of human life.

Nonverbal signals color the meanings of interpersonal relationships. Humans rely on facial, head, postural, and vocal signals to express relational messages along continua. Three of relevance are dominance-submission, composure-nervousness and trust-distrust. Machine learning and new automated analysis tools are making possible a deeper understanding of the dynamics of relational communication. These are explored in the context of group interactions during a game entailing deception. The “messiness” of studying communication under naturalistic conditions creates many measurement and design obstacles that are discussed (...) here. Possibilities for their mitigation are considered. (shrink)

This paper addresses the past, present and future aspects of African leadership and organizational ethics that have, are and will be key for any organization to sustain its systems and structures. Organizational ethics revolves around written and/or unwritten guidelines, ethical values, principles, rules and standards, that are drawn from the harmonious coexistence with the biosphere and it is how these elements are applied that dictates the style of leadership and the ethical thinking of the leaders. Africa has a wide range (...) of complexities which are compounded by, inter alia, tribal divisiveness, selfish leadership, wealth inequality, and massive unemployment. Africans tend to draw their leadership and ethical practices and reflections from the events in the environment with which they have interacted for many years. However, in order to fully address and understand the African perspective in leadership and organizational ethics, a broad comprehension of the African diverse and complex landscape is needed through unravelling of the three dimensional existence of the people. African ethics, developed over time, unifies organizations and leadership since it is part of life and is practised, sub-consciously or unconsciously, by the people as they transform from one practice to the other, and during intergenerational transitions. Globalization, liberalization, technological changes and advancement, and market changes are rapidly transforming the environment in which organizations operate. In such a situation, an effective and true leader cannot be rigid but should be flexible, with the ability to use different leadership styles whenever the situation calls for it. Only those leaders with a three-dimensional perspective live inspiring lives, live with a cause and adopt organizational ethics and leadership styles that will stand the test of time. Despite Africa being the cradle of humankind, leadership and organizational ethics is still in its infancy and wanting, even with the new generation of young leaders. The future outlook of African organizational ethics and leadership is to be found in the intersection of changes in technology, life style, demographics and geopolitics with new trends emerging in global polity and economy. (shrink)

The thesis to be entertained here can be set forth simply. To address the question, “Is there Christian philosophy?”, it is necessary, first, to acknowledge that there is no such thing as “Christiainity.” As a sociological category “Christianity” may have some content. People the world over profess to be Christian. But, when we look to the content of belief we find so little in common between professed Christians that the designation becomes almost meaningless. Professed Christians subscribe to a multiplicity of (...) faiths with varying degrees of sophistication; they adhere to tenets many of which are contradictory, many irrational, many unexamined. Orthodox Christianity is difficult to define even within the Roman Catholic community where a premium is placed on universality, unity, and apostolic mandate. That is my first observation: the lack of unity in Christianity that might give meaning to the term ‘Christian philosophy’. (shrink)

This paper is a review of the book: John J. Mearsheimer, The Great Delusion: Liberal Dreams and International Realities (New Haven, Conn.: Yale University Press, 2018). Mearsheimer observes that in the aftermath of the Cold War, the U.S. adopted a profoundly liberal foreign policy dedicated to turning as many countries as possible into liberal democracies. Mearsheimer concludes that the liberal hegemony of the past twenty-five years does not work: it has left a legacy of futile wars, failed diplomacy, and diminished (...) prestige for the United States. (shrink)