Distributed acoustic sensing can revolutionize the seismic industry by using fiber-optic cables installed permanently to acquire on-demand vertical seismic profile data at fine spatial sampling. With this, DAS can solve some of the issues associated with conventional seismic sensors. Studies have successfully demonstrated the use of DAS on cemented fibers for monitoring applications; however, such applications on tubing-deployed fibers are relatively uncommon. Application of tubing-deployed fibers is especially useful for preexisting wells, where there is no opportunity to install a fiber (...) behind the casing. In the CO2CRC Otway Project, we acquired a 3D DAS VSP using a standard fiber-optic cable installed on the production tubing of the injector well. We aim to analyze the quality of the 3D DAS VSP on tubing, as well as discuss lessons learned from the current DAS deployment. We find the limitations associated with the DAS on tubing, as well as ways to improve the quality of the data sets for future surveys at Otway. Due to the reduced coupling and the long fiber length, the raw DAS records indicate a high level of noise relative to the signal. Despite the limitations, the migrated 3D DAS VSP data recorded by cable installed on tubing are able to image interfaces beyond the injection depth. Furthermore, we determine that the signal-to-noise ratio might be improved by reducing the fiber length. (shrink)
The most important figure among Russia's radical Marxists was A.A. Bogdanov (the pseudonym of Aleksandr Aleksandrovich Malinovskii). Not only was he the prime exponent of a proletarian cultural revolution; it was Bogdanov's ideas which provided justification for concern for the environment. And his ideas are not only important to environmentalists because they were associated with this conservation movement; more significantly they are of continuing relevance because they confront the root causes of environmental destruction in the present, and offer what (...) is perhaps the only way to overcome these causes. (shrink)
The spiritual geography of Russian cosmism. General characteristics ; Recent definitions of cosmism -- Forerunners of Russian cosmism. Vasily Nazarovich Karazin (1773-1842) ; Alexander Nikolaevich Radishchev (1749-1802) ; Poets: Mikhail Vasilyevich Lomonosov, (1711-1765) and Gavriila Romanovich Derzhavin (1743-1816) ; Prince Vladimir Fedorovich Odoevsky (1803-1869) ; Aleksander Vasilyevich Sukhovo-Kobylin (1817-1903) -- The Russian philosophical context. Philosophy as a passion ; The destiny of Russia ; Thought as a call for action ; The totalitarian cast of mind -- The religious and spiritual (...) context. The kingdom of god on earth ; Hesychasm: two great Russian saints ; The Third Rome ; Pre-Christian antecedents -- The Russian esoteric context. Early searches for "deep wisdom" ; Popular magic ; Higher magic in the time of Peter the Great ; Esotericism after Peter the Great ; Theosophy and anthroposophy -- Nikolai Fedorovich Fedorov (1829-1903), the philosopher of the common task ; The one idea ; The unacknowledged prince ; The village teacher ; First disciple: Dostoevsky and Tolstoy ; The Moscow librarian ; Last years: Askhabad: the only portrait -- The "common task" ; Esoteric dimensions of the "common task" ; Fedorov's legacy: projectivism, delo, regulation -- The religious cosmists. Vladimir Sergeevich Solovyov (1853-1900) ; Sergei Nikolaevich Bulgakov (1871-1944) ; Pavel Aleksandrovich Florensky (1882-1937) ; Nikolai Aleksandrovich Berdyaev (1874-1948) -- The scientific cosmists. Konstantin Edouardovich Tsiolkovsky (1857-1935) ; Vladimir Ivanovich Vernadsky (1863-1945) ; Alexander Leonidovich Chizhevsky (1897-1964) ; Vasily Feofilovich Kuprevich (1897-1969) -- Promethean theurgy. Life-creation ; Cultural immortalism ; God-building ; Re-aiming the arrows of Eros ; Technological utopianism ; Occultism -- Fedorov's twentieth century followers. Nikolai Pavlovich Peterson (1844-1919) and Vladimir Aleksandrovich Kozhevnikov (1852-1917) ; Svyatogor and the biocosmists ; New wine and the universal task ; Alexander Konstantinovich Gorsky (1886-1943) and Nikolai Alexandrovich Setnitsky (1888-1937) ; Valerian Nikolaevich Muravyov (1885-1932) ; Vasily Nikolaevich Chekrygin (1897-1922) -- Cosmism and its offshoots today. The N.F. Fedorov museum-library ; The Tsiolkovsky museum and Chizhevsky center ; ISRICA - Institute for Scientific Research in Cosmic Anthropoecology ; Lev Nikolaevich Gumilev (1912-1992) and neo-eurasianism ; The hyperboreans ; Scientific immortalism: Igor Vishev, Danila Medvedev ; Conclusions about the Russian cosmists. (shrink)
Among the principal manifestations of glasnost' in Soviet intellectual life today is the publication of writers who earlier were denied a broad forum for the expression of their views. In the sphere of philosophy, one such writer is Iakov Mil'ner-Irinin, with whose article on the concept of human nature in ethics the present issue begins. Mil'ner-Irinin, a philosopher who has worked as an editor at the publishing house of the Soviet Academy of Sciences, has long advocated an approach to (...) ethics that is heretical by orthodox Marxist-Leninist standards—a Kantian treatment of the field as a purely normative science that elaborates the universally necessary, prescriptive laws of conscience. In 1963 the Academy considered publishing a book on the subject by Mil 'ner-Irinin, but the project was dropped after heated debate, and when some of Mil 'ner-Irinin's views did find an outlet in an article he published in the Georgian republic, they were criticized severely by the Soviet philosophical establishment. (shrink)
Nikolai Aleksandrovich Berdiaev is the twentieth-century Russian philosopher best known in the West. Upon his expulsion from Russia in 1922, he lived briefly in Berlin and then in Clamart, at the outskirts of Paris. He was personally acquainted not only with the leading Russian thinkers of his generation such as Lev Shestov, Petr Stuve, and Sergei Bulgakov, but also some important German and French philosophers such as Max Scheler, Gabriel Marcel, and Jacques Maritain. The works he considered to be (...) his most important ones were written in France in the interwar period. He published forty-three books and about 380 articles. Thirty-five of his books were monographs of varying length, the rest were collections of his articles. Twenty-seven of his monographs have been translated into over twenty languages: twenty of them into English. In Russia his first book, a collection of articles, appeared in 1901. After his banishment his works were banned in Russia for almost seventy years. They began to appear only in 1989 and by now twenty of his major works are available to the Russian reader. (shrink)
This translation from Russian of The Philosophy of Hegel as a Doctrine of the Concreteness of God and Humanity marks the first appearance in English of any of the works of Russian philosopher Ivan Aleksandrovich Il’in. Originally published in 1918, on the eve of the Russian civil war, this two- volume commentary on Hegel marked both an apogee of Russian Silver Age philosophy and a significant manifestation of the resurgence of interest in Hegel that began in the early twentieth (...) century. Il’in’s colleague A. F. Losev accurately observed in the same year it appeared: “Neither the study of Hegel nor the study of contemporary Russian philosophical thought is any longer thinkable without this book of I. A. Il’in’s.” Some Hegel scholars may know this work through the abridged translation into German that Il’in produced himself in 1946. However, that edition omitted most of the original volume two. Noted Hegel scholar Philip T. Grier’s edition—with an introduction setting Il’in’s work in its proper historical, cultural, and philosophical contexts and annotation throughout—represents the first opportunity for non-Russian-speaking readers to acquaint themselves with the full scope of Il’in’s still provocative interpretation of Hegel. (shrink)
In publishing this article the Editorial Board considers it necessary to mention that it does not share a number of the author's positions, and above all his treatment of ethics as a strictly normative science.