Modern color science finds its birth in the middle of the nineteenth century. Among the chief architects of the new color theory, the name of the polymath Hermann von Helmholtz stands out. A keen experimenter and profound expert of the latest developments of the fields of physiological optics, psychophysics, and geometry, he exploited his transdisciplinary knowledge to define the first non-Euclidean line element in color space, i.e., a three-dimensional mathematical model used to describe color differences in terms of color distances. (...) Considered as the first step toward a metrically significant model of color space, his work inaugurated researches on higher color metrics, which describes how distance in the color space translates into perceptual difference. This paper focuses on the development of Helmholtz’s mathematical derivation of the line element. Starting from the first experimental evidence which opened the door to his reflections about the geometry of color space, it will be highlighted the pivotal role played by the studies conducted by his assistants in Berlin, which provided precious material for the elaboration of the final model proposed by Helmholtz in three papers published between 1891 and 1892. Although fallen into oblivion for about three decades, Helmholtz’s masterful work was rediscovered by Schrödinger and, since the 1920s, it has provided the basis for all subsequent studies on the geometry of color spaces up to the present time. (shrink)

Avant-propos.--Les principes de la morale positiviste et la conscience contemporaine, par G. Belot.--La morale de Renouvier, par A. Darlu.--La morale de Bastiat, par Ch. Gide.--La morale de Proudhon, par M. Bernès.--Karl Marx, par A. Landry.--Les idées morales de Vinet, par J.-E. Roberty.--La morale et la politique de Renan, par R. Allier.--Frédéric Nietzsche, par H. Lichtenberger.--Maurice Mæterlinck, par L. Brunschvicg.

In lieu of an abstract, here is a brief excerpt of the content:Introduction VIOLENCE AND INSTITUTION IN CHRISTIANITY Robert J. Daly, SJ. Boston College We need both to define our terms and to indicate whether we are using them in a normative or descriptive sense. Thus the question: "Is Christianity"—or, if you will—"Are the institutions of Christianity violent or nonviolent?" can be answered with either a Yes, or a No, or with anything in between, depending on the meaning we attach (...) to theterms "violence," "institution," and "Christianity" (Daly 1997, 321-43). When we speak normatively, or take Christianity and its institutions accordingto its best ideals, Christianity isessentially nonviolent. But when we speak descriptively, i.e., take Christianity according to what the institutions ofChristianity have actually done, and according to how those who call themselves Christian have actually acted, we can make the argument that Christianity is violent, ffanalogous distinctions can be made from within the other four traditions, this might offer a good starting point for discussion. Adapting to my purpose standard dictionary definitions, I understand violence to include in a broad way the justified or unjustified human exertion of internal or external power or force in order to achieve an injurious or abusive end, i.e., an end that is against the will, the good, or the interests of those who suffer it. (This includes all war and avoids, at least at the outset, arguments about whether a war is or can be a "just war.") I understand institution in its ordinary meaning of: any significant or established practice, relationship, structure, system, or organization in a society or culture. I understand Christianity also in its ordinary sense: the Roberti. Daly, SJ.5 religion which, derived from Jesus Christ, and based on the Bible, is professed by Eastern, Roman Catholic, and Protestant bodies. Now, to help set the background for our discussion, I will try to list and briefly describe, relative to this theme, some of the major aspects or "moments" of Christianity (or Christian History), and do this in an approximately diachronic or chronological order. Much of this will be descriptive, but I will not go out of my way to dissociate the descriptions from the effects of all normative claims. I.Violence and Institution in the History of Christianity [1] The biblical foundation of Christianity in the Hebrew Scriptures. [2]The pervasiveness of violence in the Bible. [3]The Christian Scriptures present themselves as a gospel of peace. [4]Jesus and nonviolence. [5]Early Christians and nonviolence. [6]The early Christians and the military. [7]The "Constantinian turn." [8]Caesaro-papism. [9]The relegation ofChristian pacifism to religious and monastic life. [10]The just war theory. [11]The medieval Christian taken-for-grantedness of violence. [12]The Crusades. [13]Medieval Christian peace movements [14]Christians and heretics. The Inquisition. See [11] above. [1 5]Christianity and the witches. See [U] above. [16]The Reformation. [17]The Radical Reformation and the Peace Churches. [18]St. Bartholomew's Day Massacre (August 1572). [19]The religious wars. [20]Absolutism. [21]Modernity. [22]The Quakers—Religious Society of Friends. [23]The Enlightenment and Modernity. [24]Christianity and world mission; Christianity and colonialism. [25]Slavery. [26]Christianity and the "war" against native cultures. [27]Christianity and the First World War. [28]The Second World War. [29]The Holocaust. 6 Violence and Institution in Christianity [30]Christianity and the modern peace movement. [31]Christians and the "seamless ethic of life." [32]Christianity and International Communism. [33]Liberation theology. [34]The liberation of women. [35]Christianity and the resurgence of tribal and nationalist violence. [36]Christianity and human rights. [1] The biblical foundation of Christianity in the Hebrew Scriptures. Christians and Jews have the same family origins. Since believing Christians no less than believing Jews accept and revere the Hebrew Scriptures as the inspired word of God, Christians and Jews are indeed, to paraphrase Pope John XXIII, siblings. There is, beyond this, fromJudaism to Christianity, a significant parent-child relationship. In recent years (but not early enough to have prevented the Holocaust), the main line churches ofChristianity have rejected the supersessionism (the doctrine that the Old Testament has been abrogated by the New Testament) that used to characterize Christian attitudes towards the Jews and that... (shrink)

The sudden emergence of the COVID-19 pandemic brought global disruption to every aspect of society including healthcare, supply chain, the economy, and social interaction. Among the many emergent considerations were the safety and public health of the public, patients, essential workers, and healthcare professionals. In certain locations, clinical research was halted—or terminated—in deference to the immediate needs of patient care, and clinical trials focusing on the treatment and prevention of coronavirus infection were prioritized over studies focusing on other diseases. Difficult (...) decisions were made rapidly; flexibility and reconsideration were necessary not only because the intensity and severity of infection varied over time and by locale but also because knowledge of the disease and understanding of its treatment grew. Here we discuss the ethical challenges in decision-making and competing ethical tensions during the pandemic in an effort to advance future preparedness. (shrink)

Linguistic study of Mongolian traditional classical translation.