Twitter is a virtual social network where people share their posts and opinions about the current situation, such as the coronavirus pandemic. It is considered the most significant streaming data source for machine learning research in terms of analysis, prediction, knowledge extraction, and opinions. Sentiment analysis is a text analysis method that has gained further significance due to social networks’ emergence. Therefore, this paper introduces a real-time system for sentiment prediction on Twitter streaming data for tweets about the coronavirus pandemic. (...) The proposed system aims to find the optimal machine learning model that obtains the best performance for coronavirus sentiment analysis prediction and then uses it in real-time. The proposed system has been developed into two components: developing an offline sentiment analysis and modeling an online prediction pipeline. The system has two components: the offline and the online components. For the offline component of the system, the historical tweets’ dataset was collected in duration 23/01/2020 and 01/06/2020 and filtered by #COVID-19 and #Coronavirus hashtags. Two feature extraction methods of textual data analysis were used, n-gram and TF-ID, to extract the dataset’s essential features, collected using coronavirus hashtags. Then, five regular machine learning algorithms were performed and compared: decision tree, logistic regression, k-nearest neighbors, random forest, and support vector machine to select the best model for the online prediction component. The online prediction pipeline was developed using Twitter Streaming API, Apache Kafka, and Apache Spark. The experimental results indicate that the RF model using the unigram feature extraction method has achieved the best performance, and it is used for sentiment prediction on Twitter streaming data for coronavirus. (shrink)

Trump’s foreign policy outlook and his rhetorical predispositions suggest that the American foreign policy is about to undergo drastic changes in terms of substance matter of policy. The arrival of Trump at the helm of affairs has built a conventional perception of gradual American retreat from the Obama’s rebalancing policy and its pacific-centric outlook. Any abrupt change in this policy of rebalancing will have serious repercussions for the regional economic, political and security architecture designed by America since world-war II. In (...) this context, Offensive Realism, that takes system level variables as the primary determinants of foreign policy of great powers, offers a valuable framework to understand and explain the future course of Obama’s policy of rebalancing under the incumbent administration. To this end, this article is aimed at delving into the theoretical and historical reservoirs related to the US foreign policy along with the current practices of Trump administration to test the claims of continuity or transformation in the US foreign policy of rebalancing in the Asia Pacific region. This article asserts that Obama’s rebalancing policy would continue in the future with certain tactical adjustments related to the implementation of policy. (shrink)

En el presente artículo se afirma que la humanidad enfrenta dos grandes desafíos: reconciliar nuestro ser material con el ser espiritual y reconciliar las necesidades individuales con las necesidades colectivas. Al no haber reconciliado estas dos dimensiones de la vida humana, nos encontramos en guerra, exclusión social, sufrimiento, desilusión, ira, incapacidad de avanzar, y muchos otros males. Tras aportar un marco de referencia de la sociedad globalizada, el autor el autor plantea algunos aspectos del desafío, tales como el contraste entre (...) una sociedad materialmente rica y espiritualmente pobre y la necesidad de la integración de valores humanistas y espirituales en la economía que derivarían en una “economía espiritual”. (shrink)

The question of the ethical life is arguably one of the most compelling, and urgent, questions of our time. As Peter Singer, among others, has pointed out, almost 10 million children die each year due to poverty, some of whom would not die if the amount of aid that we now offer increases significantly. As Singer has also pointed out, the exploitation of human beings and other animals is a major ethical and practical concern. There can be little reasonable doubt (...) that pain and suffering abound, in the world today, due to many causes such as poverty, disease, environmental degradation and destruction and anthropocentrism among others, just as there can be little reasonable doubt that some of the pain and suffering is preventable. So, what does it mean to live ethically today? Does it mean taking the point of view of the universe, as Sidgwick put it, memorably, rather than a narrow anthropocentric or speciesist view? Does it mean living in accordance with duties or obligations, or in light of recognised virtues, or with the minimisation of pain and suffering primarily in mind? Does it entail a consideration of the interests of other species and a rejection of the principle of the sanctity of human life? Does it mean not eating animals when other healthy alternatives are available, especially when those animals have been treated in ways that are inconsistent with their interests, whatever they may be? Does it mean taking active steps to reduce poverty on our part on a day to day basis? Is ethics exhausted in some sense today? And if we could reach some consensus on these questions, what difference would the ethical life make? Some argue that speciesism and the exploitation of human beings and other animals might diminish; that pain and suffering, especially gratuitous pain and suffering, would decrease, or at the very least, not increase; or that we will become more aware of the limitations of things such as "the traditional ethic of the sanctity of life", as Singer calls it. Some argue that the ethical life is closely related to a life of relationships, reflection and deliberation, all of which deepen our understanding and enrich us personally. Others argue that the ethical life is closely related to our search for a meaningful life - that the ethical life can help us to find meaning in a world in which "meaning", defined broadly, can seem elusive, enigmatic or unsubstantial. These and related issues and questions are explored in this collection, which illustrates the relevance, vitality and dynamism of ethics today. (shrink)

This study described the relationships between academic class and student moral sensitivity and reasoning and between curriculum design components for ethics education and student moral sensitivity and reasoning. The data were collected from freshman (n = 506) and senior students (n = 440) in eight baccalaureate nursing programs in South Korea by survey; the survey consisted of the Korean Moral Sensitivity Questionnaire and the Korean Defining Issues Test. The results showed that moral sensitivity scores in patient-oriented care and conflict were (...) higher in senior students than in freshman students. Furthermore, more hours of ethics content were associated with higher principled thinking scores of senior students. Nursing education in South Korea may have an impact on developing student moral sensitivity. Planned ethics content in nursing curricula is necessary to improve moral sensitivity and moral reasoning of students. (shrink)

This paper is an update of the documents we have concerning the Acts of the Christian martyrs, focused on three main aspects: 1) the kind of acts we know of and their classification from the point of view of their historic value; 2) the versions or editions of the texts that are most accepted by scholars; 3) the relevance of the different parts that make up these documents in order to discern the original text from passages that were rewritten or (...) underwent later variations. In this way, the article offers an exhaustive list of the documents for use in researching Christian martyrs in the Roman period. (shrink)

In this study, we investigate the effectiveness of a robust sampled-data H ∞ load frequency control scheme for power systems with randomly occurring time-varying delays. By using the input-delay technique, the sampled-data LFC model is reformulated as a continuous time-delay representation. Then, Bernoulli-distributed white noise sequences are used to describe randomly occurring time-varying delays in the sampled-data LFC model. Some less conservative conditions are achieved by utilizing the Lyapunov–Krasovskii functional and employing Jensen inequality and reciprocal convex combination lemma to ensure (...) the considered power system has mean-square asymptotic stability under the designed control scheme. The derived results are based on linear matrix inequalities that can readily be solved using the MATLAB LMI toolbox. The criteria obtained are used to analyze the upper bounds for time delays, and a comparison study to validate the efficacy of the presented method is presented. (shrink)

This is a welcome reprint of a book that continues to grow in importance.

In recent literature, panpsychism has been defended by appeal to two main arguments: first, an argument from philosophy of mind, according to which panpsychism is the only view which successfully integrates consciousness into the physical world (Strawson 2006; Chalmers 2013); second, an argument from categorical properties, according to which panpsychism offers the only positive account of the categorical or intrinsic nature of physical reality (Seager 2006; Adams 2007; Alter and Nagasawa 2012). Historically, however, panpsychism has also been defended by appeal (...) to a third argument based on considerations about the nature and observability of causation. This argument has not been much discussed in recent times. Here is a concise version from William James: "… the concrete perceptual flux, taken just as it comes, offers in our own activity-situations perfectly comprehensible instances of causal agency … If we took these experiences as the type of what actual causation is, we should have to ascribe to cases of causation outside of our life, to physical cases also, an inwardly experiential nature. In other words, we should have to espouse a so-called “pan-psychic” philosophy" (James 1911: 218). James here suggests that we have direct experience of causation in our own agency. He thereby directly contradicts David Hume, who famously denied that we have any experience of causation. James goes on to claim that if this experience is representative of causation in general, it follows that all causation is mental, and that panpsychism is true. This kind of argument for panpsychism can be called the argument from (experience of) causation. This chapter offers, first, a history of this argument and arguments closely related to it, and second, an analysis of the argument – is it valid, are its premises in any way defensible, and how does it relate to the other, more popular arguments for panpsychism from philosophy of mind and categorical properties? (shrink)

The author presents and defends three theses: (1) "the first is that it is not profitable for us at present to do moral philosophy; that should be laid aside at any rate until we have an adequate philosophy of psychology." (2) "the second is that the concepts of obligation, And duty... And of what is morally right and wrong, And of the moral sense of 'ought', Ought to be jettisoned if this is psychologically possible...." (3) "the third thesis is that (...) the differences between the well-Known english writers on moral philosophy from sidgwick to the present day are of little importance." (staff). (shrink)

This is the first comprehensive study of Nietzsche's earliest (and extraordinary) book, The Birth of Tragedy (1872). When he wrote it, Nietzsche was a Greek scholar, a friend and champion of Wagner, and a philosopher in the making. His book has been very influential and widely read, but has always posed great difficulties for readers because of the particular way Nietzsche brings his ancient and modern interests together. The proper appreciation of such a work requires access to ideas that cross (...) the boundaries of conventional specialisms. This is now provided by M. S. Silk and J. P. Stern in their joint study of Nietzsche's book. They examine in detail its content, style and form; its strange genesis and hybrid status; its biographical background and the controversy engendered by its publication; its value as an account of ancient Greek culture and as a theory of tragedy and music; its relation to other theories of tragedy; and its place in the history of German ideas and in Nietzsche's own philosophical career. (shrink)

Background. The COVID-19 pandemic necessitated drastic changes to undergraduate medical training at the University of Botswana (UB). To save the academic year when campus was locked down, the Department of Medical Education conducted a needs assessment to determine the readiness for emergency remote teaching (ERT) of the Faculty of Medicine, UB. Objectives. To report on the findings of needs assessment surveys to assess learner and teaching staff preparedness for fair and just ERT, as defined by philosopher John Rawls. Methods. Needs (...) assessment surveys were conducted using Office 365 Forms distributed via WhatsApp, targeting medical students and teaching staff during the 5 undergraduate years. Data were analysed quantitatively and qualitatively. Results. Ninety-two percent (266/289) of students and 73.5% (62/84) of teaching staff responded. Surveys revealed a high penetration of smartphones among students, but poor internet accessibility and affordability in homes. Some teaching staff also reported internet and device insufficiencies. Only WhatsApp was accessible to students and teaching staff. Conclusions. For equitable access to ERT in the future, the surveys revealed infrastructural improvement needs, including wider, stronger, affordable WiFi coverage within Botswana and enhanced digital infrastructures in educational institutions, with increased support for students. (shrink)

Greek text, english translation and commentary on the surviving fragments of Empedocles (fragments as known in 1981, does not include more recent finds).

Bioethics needs an expanded moral vision. It is now time for bioethics to take full account of the problems of health disparities and structural injustice that are made newly urgent by the COVID-19 pandemic and the effects of climate change. Nancy M. P. King, Gail E. Henderson, and Larry R. Churchill make the case for a more social understanding and application of justice, a deeper humility in assessing expertise in bioethics consulting, a broader and more relevant research agenda, and greater (...) appreciation of the profound health implications of global warming. (shrink)

Kurt Godel, the greatest logician of our time, startled the world of mathematics in 1931 with his Theorem of Undecidability, which showed that some statements in mathematics are inherently "undecidable." His work on the completeness of logic, the incompleteness of number theory, and the consistency of the axiom of choice and the continuum theory brought him further worldwide fame. In this introductory volume, Raymond Smullyan, himself a well-known logician, guides the reader through the fascinating world of Godel's incompleteness theorems. The (...) level of presentation is suitable for anyone with a basic acquaintance with mathematical logic. As a clear, concise introduction to a difficult but essential subject, the book will appeal to mathematicians, philosophers, and computer scientists. (shrink)

Ibn al-ʻArabī, 1165-1240; views on freedom; Sufism; Islamic philosophy.

Contrary to Vaesen's argument that humans are unique with respect to nine cognitive capacities essential for tool use, we suggest that although such cognitive processes contribute to variation in tool use, it does not follow that these capacities arenecessaryfor tool use, nor that tool use shaped cognition per se, given the available data in cognitive neuroscience and behavioral biology.

There has been much debate recently about the meaning, place and function of “character” and “character traits” in Virtue Ethics. For example, a number of philosophers have argued recently that Virtue Ethics would be strengthened as a theory by the omission of talk of character traits; recent neuroscientific studies have suggested that there is scope for scepticism about the existence of such traits. I will argue that both approaches are flawed and unconvincing: in brief, the first approach tends to be (...) predicated on a narrow or insufficient conception of “character” and “character traits”; the second approach tends to go well beyond the available (empirical) evidence. Finally, I will argue that it is possible to point to a philosophy of education that is deeply informed by an understanding of virtue and ethics in which the concept of character has a coherent and meaningful role. (shrink)

The concept of the receptive field, first articulated by Hartline, is central to visual neuroscience. The receptive field of a neuron encompasses the spatial and temporal properties of stimuli that activate the neuron, and, as Hubel and Wiesel conceived of it, a neuron’s receptive field is static. This makes it possible to build models of neural circuits and to build up more complex receptive fields out of simpler ones. Recent work in visual neurophysiology is providing evidence that the classical receptive (...) field is an inaccurate picture. The receptive field seems to be a dynamic feature of the neuron. In particular, the receptive field of neurons in V1 seems to be dependent on the properties of the stimulus. In this paper, we review the history of the concept of the receptive field and the problematic data. We then consider a number of possible theoretical responses to these data. (shrink)

A critical account of Russell's understanding of the relationship between science and religion.

A critical account of "Humanism" and some of its extreme forms and manifestations; reflection on some of the important challenges these raise in relation to higher education in the 21st century.

This article expands Kandiyoti's concept of patriarchal bargaining to include men's negotiations. It analyzes how marginalized groups within a dominant sociocultural knowledge regime strategize to advance change while trying to maximize security and optimize their life options. The case study analyzes primaries held within kin-based groupings— hamulas among Palestinian Arabs in Israel—to determine the candidates for municipal elections. Based on interviews and analysis of newspaper articles, the authors claim that the turn to primaries by hamulas was an attempt to resolve (...) disputes that were undermining the patriarchal system. The primaries provided entry to those of lower ranking in the hierarchy of hamula political leadership, while retaining the exclusion of women from the political sphere. Thus, while bargaining with patriarchy, gender identities and hierarchies are contested, re/produced, and negotiated as both a political means and an anchor for social identities. (shrink)

Though there is much interest nowadays in "aporias" there is relatively little research on the relation between these aporias and deconstruction, and further, between these two and the philosophy of education. First, it will be argued here that a sufficient understanding of the aporias must preserve the complexity of Aristotle’s own understanding and explications, or in other words, must avoid the reductive approaches one sometimes finds in some recent commentaries on studies of Aristotle’s aporias. Second, it will be argued that (...) some critiques of Aristotelian aporias, such as a deconstructive critique, require careful scrutiny. Third it will be argued that the complex Aristotelian understanding of aporias is by no means a tired or exhausted paradigm - far from it; it has rather some significant implications for educators and in relation to educational thinking in the twenty first century, especially when understood in relation to Wittgenstein’s work on some questions, some language games, as knots in our understanding (significantly, Aristotle used just the same kind of metaphor in relation to aporias). (shrink)