Based upon research over the past half century, there has been a growing recognition that a number of mathematical models used by Copernicus had originally been developed by Islamic astronomers. This has led to speculation about how Copernicus may have learned of these models and the role they played in the development of his revolutionary, heliocentric cosmology. Most discussion of this connection has thus far been confined to fairly technical issues related to these models; recently, though, it has been argued (...) that the connections may go deeper, extending into the physics of a moving Earth and the way in which astronomy itself was conceived. The purpose of this article is to give an overview of these possible connections between Copernicus and his Islamic predecessors and to discuss some of their implications for Copernican studies. (shrink)

Duhem has generally been understood to have maintained that the major Greek astronomers were instrumentalists. This view has emerged mainly from a reading of his 1908 publication To Save the Phenomena. In it he sharply contrasted a sophisticated Greek interpretation of astronomical models (for Duhem this was that they were mathematical contrivances) with a naive insistence of the Arabs on their concrete reality. But in Le Système du monde, which began to appear in 1913, Duhem modified his views on Greek (...) astronomy considerably; his more subtle understanding included the recognition that many Greeks subordinated mathematical astronomy to physical theory. But he could not completely repudiate his earlier views about Greek astronomy in part because his extreme nineteenth century prejudices led him to continue to insist on a clear-cut demarcation between Greek and Arabic astronomy. The inevitable result is a certain unevenness in the Système and some glaring inconsistencies. (shrink)

If one is allowed to speak of progress in historical research, one may note with satisfaction the growing sophistication with which the relationship between science and religion has been examined in recent years. The "warfare" model, the "separation" paradigm, and the "partnership" ideal have been subjected to critical scrutiny and the glaring light of historical evidence. As John Hedley Brooke has so astutely noted, "Serious scholarship in the history of science has revealed so extraordinarily rich and complex a relationship between (...) science and religion in the past that general theses are difficult to sustain. Unfortunately, this more nuanced approach has not been as evident in studies of Islam and science. Though there has been some serious scholarship on the relation between science and religion in Islam, such work has made barely a dent in either the general accounts or the general perceptions of that relationship. These latter continue to be characterized by reductionism, essentialism, apologetics, and barely masked agendas. (shrink)

A passage in Copernicus's De Revolutionibus regarding the rotation of the Earth provides evidence that he was aware, whether directly or indirectly, of an Islamic tradition dealing with this problem that goes back to Na[sdotu]īr al-Dīn al-[Tdotu]ūsī. The most striking similarity is the use of comets by both astronomers to discredit Ptolemy's “proofs” in the Almagest that depended upon observational evidence. The manner in which this question was dealt with by Copernicus, as an astronomical rather than natural philosophical matter, also (...) argues for his being within the tradition of late medieval Islamic astronomy, more so than that of medieval Latin scholasticism. This of course is bolstered by his use of non-Ptolemaic models, such as the [Tdotu]ūsī couple, that have a long history in Islam but virtually none in medieval Europe. Finally, al-Qūshjī, who was in Istanbul just before Copernicus was born, entertained the possibility of the Earth's rotation; this also opens up the possibility of non-textual transmission. (shrink)

RésuméLe modèle complexe de Mercure dans le De revolutionibus de Copernic est virtuellement identique, géométriquement, à celui d'Ibn al-Šāṭir. Cependant, le modèle, antérieur, du Commentariolus est différent et il fonctionne mal. Certains en ont déduit que le jeune Copernic n'avait pas compris le modèle de son pré- décesseur; d'autres ont affirmé que l'œuvre de Copernic était totallement indépendante d'Ibn al-Šāṭir. Nous soutenons que Copernic avait les modèles d'Ibn al-Šāṭir mais qu'il a dû les modifier pour les rendre “quasi-homocentriques” dans le (...) Commentariolus. Cette modification et le passage d'une cosmologie géocentrique à une cosmologie héliocentrique étaient rendus aisés par le “biais héliocentrique” des modèles d'Ibn al-Šāṭir, pour qui la Terre était le centre effectif du mouvement moyen, contrairement à Ptolémée et à la plupart des astronomes islamiques. Nous montrons que : 1) Ibn al-Šāṭir a cherché à reproduire les élongations critiques à ±120° de l'apogée, mais il a changé les valeurs ptoléméennes à 0, ±90 et 180° ; 2) dans le Commentariolus, Copernic n'essaie pas de reproduire des élongations viables pour Mercure;et 3) au moment de la rédaction du De revolutionibus, Copernic contrôle pleinement le modèle de Mercure et il est capable de reproduire les élongations de Ptolémée aux points critiques. Nous soutenons aussi que les arguments concernant des solutions “naturelles” qui excluent la transmission sont niés par l’évidence historique. (shrink)

The history of science of the premodern Islamic world was traditionally focused on what has been called the ‘golden age’, which fortuitously occurred before the.

In this volume of conference papers originally presented at the University of Oklahoma, a distinguished group of scholars examines episodes in the transmission of premodern science and provides new insights into its cultural, philosophical and historical significance.

Nazariyat, Journal for the History of Islamic Philosophy and Sciences, issued twice a year in English and Turkish (Nazariyat İslam Felsefe ve Bilim Tarihi Araştırmaları Dergisi), is a refereed international journal. It publishes original studies, critical editions of classical texts and book reviews on Islamic philosophy, kalām, theoretical aspects of Sufism and the history of sciences. The goal of Nazariyat is to contribute to the discovery, examination and reinterpretation of the theoretical traditions in the history of Islamic thought, by giving (...) special attention to the post-classical period of it. **ISSN: 2148-8088 E-ISBN: 2547-9415**. (shrink)

The Epistles of the Brethren of Purity' is an encyclopedic compendium, probably composed in tenth-century Iraq by a society of adepts with Platonic, Pythagorean, and Shi'i tendencies. Its 52 sections ('epistles') are divided into four parts (Mathematics, Natural Philosophy, Sciences of the Soul and Intellect, and Theology). The current volume provides an edition, translation, and notes to Epistle 3 ('On Astronomia'), which forms one of the 14 sections on Mathematics. The content is a mixture of elementary astronomy and astrology, but (...) it is not a beginner's textbook. Rather, the purpose is to use examples from those disciplines to provide spiritual, moral, and soteriological guidance. Thus the Epistle uses the argument from design to show the necessity for a Creator who made the harmonious universe; this wondrous design is then employed by the authors as a model, providing humans with a paradigm for proper ethical, political, and even economic conduct; and the study of Astronomia helps the soul achieve ultimate happiness as it seeks to throw off the shackles of this mundane world and oppressive body in favour of the purity of the celestial realm.0Although by no means typical of Islamic astronomical literature, Epistle 3 of the Brethren of Purity gives a window into a fascinating and intriguing group operating during the early period of Islam who sought to continue and adopt one of the esoteric strands of Hellenistic philosophy within an Islamic context, meshing astronomy, astrology, Platonic-Pythagorean philosophy, Quranic and Biblical quotations, and anecdotes from the lives of the Abrahamic prophets. (shrink)

Background The use of lengthy, detailed, and complex informed consent forms is of paramount concern in biomedical research as it may not truly promote the rights and interests of research participants. The extent of information in ICFs has been the subject of debates for decades; however, no clear guidance is given. Thus, the objective of this study was to determine the perspectives of research participants about the type and extent of information they need when they are invited to participate in (...) biomedical research. Methods This multi-center, cross-sectional, descriptive survey was conducted at 54 study sites in seven Asia-Pacific countries. A modified Likert-scale questionnaire was used to determine the importance of each element in the ICF among research participants of a biomedical study, with an anchored rating scale from 1 to 5. Results Of the 2484 questionnaires distributed, 2113 were returned. The majority of respondents considered most elements required in the ICF to be ‘moderately important’ to ‘very important’ for their decision making. Major foreseeable risk, direct benefit, and common adverse effects of the intervention were considered to be of most concerned elements in the ICF. Conclusions Research participants would like to be informed of the ICF elements required by ethical guidelines and regulations; however, the importance of each element varied, e.g., risk and benefit associated with research participants were considered to be more important than the general nature or technical details of research. Using a participant-oriented approach by providing more details of the participant-interested elements while avoiding unnecessarily lengthy details of other less important elements would enhance the quality of the ICF. (shrink)

The Wiener index WI is one of the connectivity parameters used to know the biochemical and physicochemical properties of compounds depending upon their molecular structures. Intuitionistic fuzzy graphs IFG s are a convenient tool to represent the objects and relations between them with two types of information using truth membership degree and falsity membership degree. This research work presents the concept of WI under the structure IFG s, I F trees, and I F cycles. Some bounds on WI are investigated. (...) The relationship between WI and connectivity index CI is also studied. In the end of this study, an application of the WI in transport network flow is proposed. (shrink)

In an influential article, A. I. Sabra identified an intellectual trend from twelfth and thirteenth-century Andalusia which he described as the ‘‘Andalusian revolt against Ptolemaic astronomy.” Philosophers such as Ibn Rushd , Ibn Tufayl , and Maimonides objected to Ptolemy’s theories on philosophic grounds, not because of shortcomings in the theories' predictive accuracy. Sabra showed how al-Bitrūjī's Kitāb al-Hay'a attempted to account for observed planetary motions in a way that met the philosophic standards of those philosophers and others. In Nūr (...) al-‘ālam , the subject of this article, Joseph ibn Joseph ibn Nahmias endeavoured to improve upon al-Bitrūjī’s models. Levi Ben Gerson's Hebrew writings on astronomy criticized al-Bitrūjī, but Ibn Nahmias did not mention them. Nūr al-‘ālam deserves attention, too, because it is the first Arabic text on theoretical astronomy by a Jewish author to come to light. In the body of this article, I will describe and analyze Ibn Nahmias’ theory, from Nūr al-‘ālam , for the motion of the sun. (shrink)

On ethics and conduct of life in Islam; collected articles.

ABSTRACT Malaysia’s 13th general election in 2013 was the final election where the longest-serving elected government in the world, Barisan Nasional, regained power, before it was ousted after over six decades of authoritarian rule in 2018. In a country that practises parliamentary democracy but simultaneously observed close cooperation between the then ruling coalition and the mainstream press, this paper shows the micro-politics of the driving force of the coalition, United Malays National Organisation – specifically, how anxiety regarding the maintenance of (...) their privileged and empowered Malay position dominated the national narrative during the GE13 campaign. Focusing on editorial journalistic genres in four paid-for Malay-language newspapers, I illustrate the typical politics of fear that characterises much of Malaysian right-wing rhetoric – the ways in which racial and religion issues are provoked. The in-depth representational analysis, via the Discourse-historical Approach’s nomination and predication strategies, also suggests the normalisation of nationalistic and racist rhetoric, which primarily works with ‘fear’: fear of change, of loss of privilege, of the future, of other races; in principle, almost anything can be constructed as a threat to ‘Us’, an imagined homogenous people inside a well-protected territory through the discursive construction of such in-groups and out-groups. (shrink)

The aim of this study is to explore social media marketing activities and their impact on consumer intentions. This study also analyzes the mediating roles of social identification and satisfaction. The participants in this study were experienced users of two social media platforms Facebook and Instagram in Pakistan. A self-administered questionnaire was used to collect data from respondents. We used an online community to invite Facebook and Instagram users to complete the questionnaire in the designated online questionnaire system. Data were (...) collected from 353 respondents, and structural equation modeling was used to analyze the data. Results show that SMMAs have a significant impact on the intentions of users. Furthermore, social identification mediates the relationship between social media activities and satisfaction, and satisfaction mediates the relationship between social media activities and the intentions of users. This will help marketers how to attract customers to develop their intentions. This is the first novel study that used SMMAs to address the user intentions with the role of social identification and satisfaction in the context of Pakistan. (shrink)

L'Etat est généralement considéré, à tort comme une création des société occidentale. L'œuvre de Ibn Khaldoun, dans sa contribution innovante à la théorie de l'Etat montre au contraire combien essentiel est la nouveauté du rôle qu'il accorde au contrat social. C'est dans l'Etat que l'individu connaît son plus entier développement, le rôle du souverain n'étant pas de créer ou de promouvoir en l'homme une vie vertueuse, mais de le protéger de son propre égoïsme. Une telle mutation a eu aussitôt d'incalculables (...) répercussions dans le domaine du droit, comme celui du pouvoir. " L'Etat est à lui seul l'origine du Droit et de l'Autorité ". Cette conclusion a amené Ibn Khaldoun à envisager autrement le rapport du spirituel et du temporel. On mesure aujourd'hui l'importance de cette affirmation, qui malgré les événements qui défrayent les fragiles équilibres politiques à travers le monde, a grandement influencé le courant rationaliste arabe. L'auteur, s'appuyant sur l'œuvre d'Ibn Khaldoun, pose la question dans cet ouvrage, de l'évolution de la crise de l'Etat dans le monde arabo-musulman. (shrink)

In this article, I examine the axiology of techniques in the environmentalist discourses of degrowth through the lens of French philosopher Gilbert Simondon. This fertile articulation shows, first, that degrowth discourses evaluate techniques only based on their uses; second, it explains why such an axiology, praxeological rather than technological, is unable to influence technical progress. Beginning with Simondon, I show in particular that degrowth thinking ignores the distinction between information and energy within technical realities. Yet, this distinction is necessary if (...) we wish to link the study of techniques and ecology in a constructive way. (shrink)