Using an innovative workflow incorporating microseismic attributes and geomechanical well logs, we have defined major geomechanical drivers of microseismic expression to understand reservoir stimulation response in an engineering/geologic context. We sampled microseismic data from two hydraulically fractured Marcellus wells in the Appalachian Basin, West Virginia, vertically through the event cloud, crossing shale, limestone, sandstone, and chert. We focused our analysis on the Devonian organic shale and created pseudologs of moment magnitude Mw, b-value, and event count. The vertical moving-average sampling of (...) microseismic data was completed such that the sample interval matched that of the geophysical well log. This technique creates robust, high-resolution microseismic logs that indicate subtle changes in microseismic properties and allow direct crossplotting of microseismic versus geophysical logs. We chose five geomechanical properties to form the framework against which to interrogate the microseismic data: Young’s modulus, Poisson’s ratio, brittleness, lambda-rho, and mu-rho. In addition, we included gamma as a useful measure of organic content. Having defined this microseismic-geomechanical crossplot space, we derived insights into the response of these units during hydraulic fracturing. Observations include larger magnitude microseismicity occurs in high PR, high YM rocks; high event counts are found in low PR rocks, low b-value is consistent with the occurrence of larger magnitude events and low event counts, and YM and PR act as bounding conditions, creating “sweet spots” for high and low Mw, event count, and stress. In our crossplot space, there is a meaningful link between microseismicity and the elastic properties of the host rock. In light of this dependence of stimulation potential on elastic properties, the calculation of microseismic pseudologs at stimulation sites and application of our crossplot framework for microseismic-geomechanical analysis in unconventional shale will inform operators in planning and forecasting stimulation and production, respectively. (shrink)

The extensive development of unconventional reservoirs using horizontal drilling and multistage hydraulic fracturing has generated large volumes of reservoir characterization and production data. The analysis of this abundant data using statistical methods and advanced machine-learning techniques can provide data-driven insights into well performance. Most predictive modeling studies have focused on the impact that different well completion and stimulation strategies have on well production but have not fully exploited the available in situ rock property data to determine its role in reservoir (...) productivity. We have used machine-learning techniques to rank rock mechanical properties, microseismic attributes, and stimulation parameters in the order of their significance for predicting natural gas production from an unconventional reservoir. The data for this study came from a hydraulically fractured well in the Marcellus Shale in Monongalia County, West Virginia. The data classes included measurements aggregated by well completion stage that included gas production, well-log-derived measurements including bulk density, elastic moduli, shear impedance, compressional impedance, brittleness, and gamma measurements, microseismic attributes, long-period long-duration event counts, fracture counts, and stimulation parameters that included the fluid injection volume and average pumping pressure. To identify observable proxies for the drivers of gas production, we evaluated five commonly used ML approaches including multivariate adaptive regression spline, Gaussian mixture model, random forest, gradient boosting, and neural network. We selected five variables including LPLD event count, seismogenic b-value, hydraulic diffusivity, cumulative moment, and fluid volume as the features most likely to impact gas productivity at the stage level in the study area. The data-driven selection of these parameters for their importance in determining gas production can help reservoir engineers design more effective hydraulic-fracture treatments in the Marcellus Shale and other similar unconventional reservoirs. Plain language summary: We use machine-learning methods and data-driven selection of reservoir parameters to rank and better understand their importance in determining gas production, which can help reservoir engineers design more effective hydraulic-fracture treatments in the Marcellus Shale and other similar unconventional reservoirs. (shrink)

Contents:(I)On the Historical value of the Ancient Ceylonese Chronicles (II)The Original Beginning of the Vaisesika-Sutras (III)Navyanyayah; (IV) Navyanyah and Article for the Worterbuch der Philosophie .(V)History of Indian Philosophy,Vol.IV,Posthumous Sketches:(1)Epistemology and Logic of the Classical Period,(2)Tantrayuktah ,(3)Theory of Language,(4)Mimamsa, (5)[ Language Theory of the Vrttikara (6)Kumarila,(7)Dharmakirti.

The first of Erich Neumann's works to be translated into English, this eloquent book draws on a full range of world mythology to show that individual consciousness undergoes the same archetypal stages of development as has human consciousness as a whole. Neumann, one of Jung's most creative students and a renowned practitioner of analytical psychology in his own right, shows how the stages begin and end with the symbol of the Uroboros, or tail-eating serpent. The intermediate stages are projected (...) in the universal myths of the World Creation, Great Mother, Separation of the World Parents, Birth of the Hero, Slaying of the Dragon, Rescue of the Captive, and Transformation and Deification of the Hero. Throughout the sequence the Hero is the evolving ego consciousness. (shrink)

Can we still watch Woody Allen's movies? Can we still laugh at Bill Cosby's jokes? Woody Allen, Kevin Spacey, Dave Chappelle, Louis C. K., J.K. Rowling, Michael Jackson, Roseanne Barr. Recent years have proven rife with revelations about the misdeeds, objectional views, and, in some instances, crimes of popular artists. Spurred in part by the #metoo movement, and given more access than ever thanks to social media and the internet in general, the public has turned an alert and critical eye (...) upon the once-hidden lives of previously cherished entertainers. But what should we members of the public do, think, and feel in response to these artists' actions or statements? It's a predicament that many of us face: whether it's possible to disentangle the deeply unsettled feelings we have toward an artist from how we respond to the art they produced. As consumers of art, and especially as fans, we have a host of tricky moral question to navigate: do the moral lives of artists affect the aesthetic quality of their work? Is it morally permissible for us to engage with or enjoy that work? Should immoral artists and their work be "canceled"? Most of all, can we separate an artist from their art? In Drawing the Line, Erich Hatala Matthes employs the tools of philosophy to offer insight and clarity to the ethical questions that dog us. He argues that it doesn't matter whether we can separate the art from the artist, because we shouldn't. While some dismiss the lives of artists as if they are irrelevant to the artist's work, and others instrumentalize artwork, treating it as nothing more than a political tool, Matthes argues both that the lives of artists can play an important role in shaping our moral and aesthetic relationship to the artworks that we love and that these same artworks offer us powerful resources for grappling with the immorality of their creators. Rather than shunning art made by those who have been canceled, shamed, called out, or even arrested, we should engage with it all the more thoughtfully and learn from the complexity it forces us to confront. Recognizing the moral and aesthetic relationships between art and artist is crucial to determining when and where we should draw the line when good artists do bad things. (shrink)

Excerpt from Vom Zorne Gottes: Eine Studie Über den Einflusz der Griechischen Philosophie auf das Alte Christentum Zur Einleitung war es nötig, auch die Anschauungen des Neuen Testamentes uber den Zorn Gottes zu besprechen. N atür lich war es hier aber nicht meine Absicht, zu allen schwebenden Fragen Stellung zu nehmen oder gar mich auf Polemik, gegen abweichende Ansichten einzulassen. Es mußte genügen, die Punkte herauszuheben, die für das Verständnis der folgenden Entwicklung von Wichtigkeit sind. About the Publisher Forgotten (...) Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. (shrink)

We analyze Zorn's Lemma and some of its consequences for Boolean algebras in a constructive setting. We show that Zorn's Lemma is persistent in the sense that, if it holds in the underlying set theory, in a properly stated form it continues to hold in all intuitionistic type theories of a certain natural kind. (Observe that the axiom of choice cannot be persistent in this sense since it implies the law of excluded middle.) We also establish the persistence (...) of some familiar results in the theory of (complete) Boolean algebras--notably, the proposition that every complete Boolean algebra is an absolute subretract. This (almost) resolves a question of Banaschewski and Bhutani as to whether the Sikorski extension theorem for Boolean algebras is persistent. (shrink)

In this paper, I present an outline of the oppression account of cultural appropriation and argue that it offers the best explanation for the wrongfulness of the varied and complex cases of appropriation to which people often object. I then compare the oppression account with the intimacy account defended by C. Thi Nguyen and Matt Strohl. Though I believe that Nguyen and Strohl’s account offers important insight into an essential dimension of the cultural appropriation debate, I argue that justified objections (...) to cultural appropriation must ultimately be grounded in considerations of oppression as opposed to group intimacy. I present three primary objections to the intimacy account. First, I suggest that in its effort to explain expressive appropriation claims (those that purportedly lack an independent ground), the intimacy account doubles down on the boundary problem. Second, I question whether group intimacy possess the kind of bare normativity that Nguyen and Strohl claim for it. Finally, I argue that these objections give us reason to accept the importance of group intimacy to the cultural appropriation debate, but question the source of its significance as identified by Nguyen and Strohl. (shrink)

Is there something morally wrong with cultural appropriation in the arts? I argue that the little philosophical work on this topic has been overly dismissive of moral objections to cultural appropriation. Nevertheless, I argue that philosophers working on epistemic injustice have developed powerful conceptual tools that can aid in our understanding of objections that have been levied by other scholars and artists. I then consider the relationship between these objections and the harms of cultural essentialism. I argue that focusing on (...) the systematic nature of appropriative harms may allow us to sidestep the problem of essentialism, but not without cost. (shrink)

The book, with its emphasis on the interaction of microstructures with the entire biosphere, ecosystems etc., and on how micro- and macrocosmos mutually create the conditions for their further evolution, provides a comprehensive framework for a deeper understanding of human creativity in a time of transition.

Those who comment on modern scientific institutions are often quick to praise institutional structures that leave scientists to their own devices. These comments reveal an underlying presumption that scientists do best when left alone—when they operate in what we call the ‘scientific state of nature’. Through computer simulation, we challenge this presumption by illustrating an inefficiency that arises in the scientific state of nature. This inefficiency suggests that one cannot simply presume that science is most efficient when institutional control is (...) absent. In some situations, actively encouraging unpopular, risky science would improve scientific outcomes. 1 Introduction2 Scientists and Bandits3 Choosing an ϵ4 Structure of Communication5 Discussion. (shrink)

We analyze Zorn's Lemma and some of its consequences for Boolean algebras in a constructive setting. We show that Zorn's Lemma is persistent in the sense that, if it holds in the underlying set theory, in a properly stated form it continues to hold in all intuitionistic type theories of a certain natural kind. We also establish the persistence of some familiar results in the theory of Boolean algebras--notably, the proposition that every complete Boolean algebra is an absolute (...) subretract. This resolves a question of Banaschewski and Bhutani as to whether the Sikorski extension theorem for Boolean algebras is persistent. (shrink)

"O'Meara masterfully situates Pryzwara in relation to the traditional and contemporary theological, philosophical, ecclesial, cultural, and social contexts within which he wrote." --William P. Loewe, professor of religious studies, Catholic University of America Erich Przywara, S.J. is one of the important Catholic intellectuals of the twentieth century. Yet, in the English-speaking world Przywara remains largely unknown. Few of his sixty books or six hundred articles have been translated. In this engaging new book, Thomas O'Meara offers a comprehensive study of (...) the German Jesuit Erich Przywara and his philosophical theology. Przywara's scholarly contributions were remarkable. He was one of three theologians who introduced the writings of John Henry Cardinal Newman into Germany. From his position at the Jesuit journal in Munich, Stimmen der Zeit, he offered an open and broad Catholic perspective on the cultural, philosophical, and theological currents of his time. As one of the first Catholic intellectuals to employ the phenomenologies of Edmund Husserl and Max Scheler, he was also responsible for giving an influential, more theological interpretation of the Spiritual Exercises of Ignatius Loyola. Przywara was also deeply engaged in the ideas and authors of his times. He was the first Catholic dialogue partner of Karl Barth and Paul Tillich. Edmund Husserl was counted among Przywara's friends, and Edith Stein was a close personal and intellectual companion. Through his interactions with important figures of his age and his writings, ranging from speculative systems to liturgical hymns, Przywara was of marked importance in furthering a varied dialogue between German Catholicism and modern culture. Following a foreword by Michael Fahey, S.J., O'Meara presents a chapter on Pryzwara's life and a chronology of his writings. O'Meara then discusses Pryzwara's philosophical theology, his lecture-courses at German universities on Augustine and Aquinas, his philosophy of religion, and his influence on important intellectual contemporaries. O'Meara concludes with an in-depth analysis of Pryzwara's theology, focusing particularly on his Catholic views of person, liturgy, and church. (shrink)

This chapter offers an overview of issues posed by the problem of immoral artists, artists who in word or deed violate commonly held moral principles. I briefly consider the question of whether the immorality of an artist can render their work aesthetically worse (making connections to chapters in the Theory section of the handbook), and then turn to questions about what the audience should do and feel in response to knowledge of these moral failings. I discuss questions such as whether (...) audiences have reason not to purchase or consume work by these artists, whether their shows and exhibitions should be canceled, and how fans might grapple with the emotional turmoil they feel when artists whom they love act or speak in ways that are morally condemnable. (shrink)

We introduce an atomic formula ${\vec{y} \bot_{\vec{x}}\vec{z}}$ intuitively saying that the variables ${\vec{y}}$ are independent from the variables ${\vec{z}}$ if the variables ${\vec{x}}$ are kept constant. We contrast this with dependence logic ${\mathcal{D}}$ based on the atomic formula = ${(\vec{x}, \vec{y})}$ , actually equivalent to ${\vec{y} \bot_{\vec{x}}\vec{y}}$ , saying that the variables ${\vec{y}}$ are totally determined by the variables ${\vec{x}}$ . We show that ${\vec{y} \bot_{\vec{x}}\vec{z}}$ gives rise to a natural logic capable of formalizing basic intuitions about independence and dependence. (...) We show that ${\vec{y} \bot_{\vec{x}}\vec{z}}$ can be used to give partially ordered quantifiers and IF-logic an alternative interpretation without some of the shortcomings related to so called signaling that interpretations using = ${(\vec{x}, \vec{y})}$ have. (shrink)

It is often assumed that there is a necessary relationship between historical value and irreplaceability, and that this is an essential feature of historical value’s distinctive character. Contrary to this assumption, I argue that it is a merely contingent fact that some historically valuable things are irreplaceable, and that irreplaceability is not a distinctive feature of historical value at all. Rather, historically significant objects, from heirlooms to artifacts, offer us an otherwise impossible connection with the past, a value that persists (...) even in the face of suitable replacements. (shrink)

‘Heritage’ is a concept that often carries significant normative weight in moral and political argument. In this article, I present and critique a prevalent conception according to which heritage must have a positive valence. I argue that this view of heritage leads to two moral problems: Disowning Injustice and Embracing Injustice. In response, I argue for an alternative conception of heritage that promises superior moral and political consequences. In particular, this alternative jettisons the traditional focus on heritage as a primarily (...) positive relationship to the past, and thus offers resources for coming to terms with histories of injustice. (shrink)

This edited volume explores the previously underacknowledged 'pre-history' of mathematical structuralism, showing that structuralism has deep roots in the history of modern mathematics. The contributors explore this history along two distinct but interconnected dimensions. First, they reconsider the methodological contributions of major figures in the history of mathematics. Second, they re-examine a range of philosophical reflections from mathematically-inclinded philosophers like Russell, Carnap, and Quine, whose work led to profound conclusions about logical, epistemological, and metaphysic.

Philosophers have used the terms 'impersonal' and 'personal value' to refer to, among others things, whether something's value is universal or particular to an individual. In this paper, I propose an account of impersonal value that, I argue, better captures the intuitive distinction than potential alternatives, while providing conceptual resources for moving beyond the traditional stark dichotomy. I illustrate the practical importance of my theoretical account with reference to debate over the evaluative scope of cultural heritage.

First Published in 1999. Routledge is an imprint of Taylor & Francis, an informa company.

Wittgenstein at Work: Method in the Philosophical Investigations explores the least well-understood aspect of Wittgenstein's later work: his aims and methods. Specially-commissioned papers by twelve of the world's leading Wittgenstein scholars analyze the way he approached key topics such as rule-following and private language, and examine his remarks on clarification, nonsense and other central notions of his methodology. Many contributors touch on the therapeutic aspects Wittgenstein's approach, the focus of much current debate. Wittgenstein at Work provides both students and specialist (...) with a much-needed methodological companion to one of the greatest philosophical works of the twentieth century. (shrink)

The present paper attempts to show that a 1915 article by Erich Kretschmann must be credited not only for being the source of Einstein’s point-coincidence remark, but also for having anticipated the main lines of the logical-empiricist interpretation of general relativity. Whereas Kretschmann was inspired by the work of Mach and Poincaré, Einstein inserted Kretschmann’s point-coincidence parlance into the context of Ricci and Levi-Civita’s absolute differential calculus. Kretschmann himself realized this and turned the point-coincidence argument against Einstein in his (...) second and more famous 1918 paper. While Einstein had taken nothing from Kretschmann but the expression “point-coincidences”, the logical empiricists, however, instinctively dragged along with it the entire apparatus of Kretschmann’s conventionalism. Disappointingly, in their interpretation of general relativity, the logical empiricists unwittingly replicated some epistemological remarks Kretschmann had written before General Relativity even existed. (shrink)

In Man for Himself , Erich Fromm examines the confusion of modern women and men who, because they lack faith in any principle by which life ought to be guided, become the helpless prey forces both within and without. From the broad, interdisciplinary perspective that marks Fromm’s distinguished oeuvre, he shows that psychology cannot divorce itself from the problems of philosophy and ethics, and that human nature cannot be understood without understanding the values and moral conflicts that confront us (...) all. He shows that an ethical system can be based on human nature rather than on revelations or traditions. As Fromm asserts, “If man is to have confidence in values, he must know himself and the capacity of his nature for goodness and productiveness.”. (shrink)

Various contributors to recent philosophy of mathematics havetaken Richard Dedekind to be the founder of structuralismin mathematics. In this paper I examine whether Dedekind did, in fact, hold structuralist views and, insofar as that is the case, how they relate to the main contemporary variants. In addition, I argue that his writings contain philosophical insights that are worth reexamining and reviving. The discussion focusses on Dedekind''s classic essay Was sind und was sollen die Zahlen?, supplemented by evidence from Stetigkeit und (...) irrationale Zahlen, his scientific correspondence, and his Nachlaß. (shrink)

In this paper, I argue that norms of artistic and aesthetic authenticity that prioritize material origins foreclose on broader opportunities for aesthetic experience: particularly, for the aesthetic experience of history. I focus on Carolyn Korsmeyer’s recent articles in defense of the aesthetic value of genuineness and argue that her rejection of the aesthetic significance of historical value is mistaken. Rather, I argue that recognizing the aesthetic significance of historical value points the way towards rethinking the dominance of the very norms (...) of authenticity that Korsmeyer endeavors to defend and explain. (shrink)

In recent philosophy of mathematics avariety of writers have presented ``structuralist''views and arguments. There are, however, a number ofsubstantive differences in what their proponents take``structuralism'' to be. In this paper we make explicitthese differences, as well as some underlyingsimilarities and common roots. We thus identifysystematically and in detail, several main variants ofstructuralism, including some not often recognized assuch. As a result the relations between thesevariants, and between the respective problems theyface, become manifest. Throughout our focus is onsemantic and metaphysical issues, (...) including what is orcould be meant by ``structure'' in this connection. (shrink)

Nothing less than a manifesto for a new social and psychological revolution to save our threatened planet, this book is a summary of the penetrating thought of ...

This article draws together research from various sub-disciplines of philosophy to offer an overview of recent philosophical work on the ethics of historic preservation. I discuss how philosophers writing about art, culture, and the environment have appealed to historical significance in crafting arguments about the preservation of objects, practices, and places. By demonstrating how it relates to core themes in moral and political philosophy, I argue that historic preservation is essentially concerned with ethical issues.

Explores the acquisition and use of knowledge for human purposes and the extent of our ability to shape the future through the design, regulation, and restructuring of the lives of human systems at all levels.

Guarded fragments of first-order logic were recently introduced by Andreka, van Benthem and Nemeti; they consist of relational first-order formulae whose quantifiers are appropriately relativized by atoms. These fragments are interesting because they extend in a natural way many propositional modal logics, because they have useful model-theoretic properties and especially because they are decidable classes that avoid the usual syntactic restrictions (on the arity of relation symbols, the quantifier pattern or the number of variables) of almost all other known decidable (...) fragments of first-order logic. Here, we investigate the computational complexity of these fragments. We prove that the satisfiability problems for the guarded fragment (GF) and the loosely guarded fragment (LGF) of first-order logic are complete for deterministic double exponential time. For the subfragments that have only a bounded number of variables or only relation symbols of bounded arity, satisfiability is EXPTIME-complete. We further establish a tree model property for both the guarded fragment and the loosely guarded fragment, and give a proof of the finite model property of the guarded fragment. It is also shown that some natural, modest extensions of the guarded fragments are undecidable. (shrink)