A record from Wanxiang Cave, China, characterizes Asian Monsoon (AM) history over the past 1810 years. The summer monsoon correlates with solar variability, Northern Hemisphere and Chinese temperature, Alpine glacial retreat, and Chinese cultural changes. It was generally strong during Europe's Medieval Warm Period and weak during Europe's Little Ice Age, as well as during the final decades of the Tang, Yuan, and Ming Dynasties, all times that were characterized by popular unrest. It was strong during the first several decades of the Northern Song Dynasty, a period of increased rice cultivation and dramatic population increase. The sign of the correlation between the AM and temperature switches around 1960, suggesting that anthropogenic forcing superseded natural forcing as the major driver of AM changes in the late 20th century.
This part of the section History of Ontology includes of the following pages: Pseudo-Aristotle in the Middle Ages: the Theology of Aristotle (under construction) Al-Kindi's Metaphysics: First Philosophy as the Study of God (under construction) Al-Farabi on the Scopes of the Aristotelian Metaphysics (under construction) Ibn Sina (Avicenna) on the Subject and the Object of Metaphysics Translations of the Philosophical Works of Avicenna (Current page) Selected bibliography on Avicenna's Logic and Metaphysics: Avicenna A G Avicenna H Z Averroes (Ibn Rushd) on the Divine as the Subject of Metaphysics (under construction) Index of the Pages on Medieval Philosophy
Continuing the contribution to medieval Jewish intellectual history, this book's author focuses here on the radical pietist movement of Ḥasidei Ashkenaz and its main literary work, Sefer Ḥasidim, and on the writings and personality of the Provençal commentator Ravad of Posquières. In both areas the author challenges mainstream views to provide a new understanding of medieval Jewish thought. Some of the essays are revised and updated versions of work previously published, and some are entirely new, but in all of them the author challenges reigning views to provide a new understanding of medieval Jewish thought. The section on Sefer Ḥasidim brings together over half a century of the author's writings on German Pietism, many of which originally appeared in obscure publications, and adds two new essays. The first of these is a methodological study of how to read this challenging work and an exposition of what constitutes a valid historical inference, while the second reviews the validity of the sociological and anthropological inferences presented in contemporary historiography. In discussing Ravad's oeuvre, the author questions the widespread notion that Ravad's chief accomplishment was his commentary on Maimonides' Mishneh Torah; his Talmud commentary, he claims, was of far greater importance and was his true masterpiece. He also adds a new study that focuses on the acrimony between Ravad, as the low-born genius of Posquières, and R. Zeraḥyah ha-Levi of Lunel, who belonged to the Jewish aristocracy of Languedoc, and considers the implications of that relationship.
This article aims to improve our understanding of the boundaries of places of worship during the Second Iron Age in Iberia, particularly along the Mediterranean coast. The latter is one of the key elements in comprehending these sacred spaces as a whole. Throughout the Mediterranean, various separation systems can clearly be observed: moated enclosures, palisade fences and more or less monumental masonry walls. The absence of such systems during archaeological excavations does not necessarily mean that they were completely absent. Indeed, these boundaries are not always materialized by an architectural structure whether monumental or not. These considerations, which form part of the study of sanctuaries, are rarely discussed in relation to understanding Iberian sacred spaces. Thus, even if some examples suggest the existence of built structures, it seems that isolation is the most common means of delimiting sacred space, whether in urban areas or sites in the countryside.
Science is about facts and truth. Yet sometimes the truth and facts are not obvious. For example, in the field of MRI (Magnetic Resonance Imaging), there has been a long-lasting debate about who were the major contributors in its development. Particularly, there was a strong dispute between the followers of two scientists, R. Damadian and P. Lauterbur. In this review, we carefully trace the major developments in applying NMR for cancer detection starting almost 50 years ago. The research records show that the truth was beyond the claims of either research camps. The development of NMR for cancer detection involved multiple research groups, who made critical contributions at different junctures.
In the theoretical study of distributed communication networks, "history trees" are a discrete structure that naturally models the concept that anonymous agents become distinguishable upon receiving different sets of messages from neighboring agents. By conveniently organizing temporal information in a systematic manner, history trees have been instrumental in the development of optimal deterministic algorithms for networks that are both anonymous and dynamically evolving. This note provides an accessible introduction to history trees, drawing comparisons with more traditional structures found in existing literature and reviewing the latest advancements in the applications of history trees, especially within dynamic networks. Furthermore, it expands the theoretical framework of history trees in new directions, also highlighting several open problems for further investigation.
The aim of this paper is to propose a state of knowledge on the castral architecture and protection of the religious establishments founded by the Hospitallers of St. John of Jerusalem in southwestern France from the twelfth to the end of the fifteenth century. The archaeological traces of a fortification implemented from the foundation of the houses in the twelfth and thirteenth centuries are rare. Only the written sources provide a few clues as to the presence of a castral architecture within the commanderies, without it being possible to determine whether it was an architectural legacy linked to the founding of the religious establishment through donations, or whether it was a real desire on the part of the religious community to build, ex nihilo, a castral complex intended to house it. At the end of the Middle Ages, during the Hundred Years' War, the hospital commanderies were the object of an important defense. This fortification of religious houses in a context of insecurity resulted in the construction of towers and enclosures, as well as the defense of churches, barns and agricultural domains. This generalized fortification also concerns the habitat that was agglomerated near the hospital domus.
The history of the Institute of Physics at the University of Florence is traced from the beginning of the 20th century, with the arrival of Antonio Garbasso as Director (1913), to the 1960s. Thanks to Garbasso's expertise, not only did the Institute gain new premises on Arcetri hill, where the Astronomical Observatory was already located, but it also formed a brilliant group of young physicists made up of Enrico Fermi, Franco Rasetti, Enrico Persico, Bruno Rossi, Gilberto Bernardini, Daria Bocciarelli, Lorenzo Emo Capodilista, Giuseppe Occhialini and Giulio Racah, who were engaged in the emerging fields of Quantum Mechanics and Cosmic Rays. This Arcetri School disintegrated in the late 1930s for the transfer of its protagonists to chairs in other universities, for the environment created by the fascist regime and, to some extent, for the racial laws. After the war, the legacy was taken up by some students of this school who formed research groups in the field of nuclear physics and elementary particle physics. As far as theoretical physics was concerned, after the Fermi and Persico periods these studies enjoyed a new expansion towards the end of the 1950s, with the arrival of Giacomo Morpurgo and above all, that of Raoul Gatto, who created the first real Italian school of Theoretical Physics at Arcetri.
Niels C. M. Martens, Miguel Ángel Carretero Sahuquillo, Erhard Scholz
et al.
Editorial of a special issue on dark matter & modified gravity, distributed across the journals Studies in History and Philosophy of Modern Physics and Studies in History and Philosophy of Science. Published version of the open access editorial (in SHPS) available here: https://doi.org/10.1016/j.shpsa.2021.08.015. The six papers are collected here: https://www.sciencedirect.com/journal/studies-in-history-and-philosophy-of-science-part-b-studies-in-history-and-philosophy-of-modern-physics/special-issue/10CR71RJLWM.
With Cyrano, Voltaire, and Verne, France provided important milestones in the history of early science fiction. However, even if the genre was not very common a few centuries ago, there were numerous additional contributions by French-speaking writers. In this paper, we review two cases of interplanetary novels written in the second half of the eighteenth century and sharing a rare particularity: their authors were female. Voyages de Milord Ceton was imagined by Marie-Anne de Roumier-Robert whereas Cornelie Wouters de Wasse conceived Le Char Volant. While their personal lives were very different, and their writing style too, both authors share in these novels a common philosophy in which equality -- between ranks but also between genders -- takes an important place. Their works thus clearly fit into the context of the Enlightenment.
The prehistory of African trypanosomiasis indicates that the disease may have been an important selective factor in the evolution of hominids. Ancient history and medieval history reveal that African trypanosomiasis affected the lives of people living in sub-Saharan African at all times. Modern history of African trypanosomiasis revolves around the identification of the causative agents and the mode of transmission of the infection, and the development of drugs for treatment and methods for control of the disease. From the recent history of sleeping sickness we can learn that the disease can be controlled but probably not be eradicated. Current history of human African trypanosomiasis has shown that the production of anti-sleeping sickness drugs is not always guaranteed, and therefore, new, better and cheaper drugs are urgently required.
We start by surveying the history of the idea of a fundamental conservation law and briefly examine the role conservation laws play in different classical contexts. In such contexts we find conservation laws to be useful, but often not essential. Next we consider the quantum setting, where the conceptual problems of the standard formalism obstruct a rigorous analysis of the issue. We then analyze the fate of energy conservation within the various viable paths to address such conceptual problems; in all cases we find no satisfactory way to define a (useful) notion of energy that is generically conserved. Finally, we focus on the implications of this for the semiclassical gravity program and conclude that Einstein's equations cannot be said to always hold.