264,795 research outputs found
Speculation and Risk Sharing with New Financial Assets
No full textI investigate the effect of financial innovation on portfolio risks when traders have belief disagreements. I decompose traders’ average portfolio risks into two components: the uninsurable variance, defined as portfolio risks that would obtain without belief disagreements, and the speculative variance, defined as portfolio risks that result from speculation. My main result shows that financial innovation always increases the speculative variance through two distinct channels: by generating new bets and by amplifying traders’ existing bets. When disagreements are large, these effects are sufficiently strong that financial innovation increases average portfolio risks, decreases average portfolio comovements, and generates greater speculative trading volume relative to risk-sharing volume. Moreover, a profit-seeking market maker endogenously introduces speculative assets that increase average portfolio risks
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Financial Innovation and Portfolio Risks
No full textI illustrate the effect of financial innovation on portfolio risks by using an example with risk-sharing needs and belief disagreements. I consider two types of innovation: product innovation, formalized as an expansion of new financial assets; and process innovation, formalized as a reduction in transaction costs. When belief disagreements are large, both types of innovation increase portfolio risks. Moreover, endogenous financial innovation is directed towards speculative assets that increase portfolio risks
On the generating functions and special functions associated with superoscillations
No full textThe aim of this paper is to study generating functions for the coefficients of the classical superoscillatory function associated with weak measurements. We also establish some new relations between the superoscillatory coefficients and many well-known families of special polynomials, numbers, and functions such as Bernstein basis functions, the Hermite polynomials, the Stirling numbers of second kind, and also the confluent hypergeometric functions. Moreover, by using generating functions, we are able to develop a recurrence relation and a derivative formula for the superoscillatory coefficients
pXRF study of pottery : State of the art and perspectives
No full textInternational audienceAlthough portable/handheld X-ray Fluorescence instruments are available from decades, the number of publications reporting on-site analyses of pottery remain very limited. Most of them present the paste composition and not the (glazed) décor. After a brief review of the published works about the studies of pottery and glass, we will discuss the advantages (on-site analysis and selection of artefacts, higher number of objects, better statistics …) and drawbacks (light elements and some traces not measured, difficulty to determine the analyzed volume, low quantity of informative elements…). We will take examples on three important series previously analyzed, 18th- century stonewares (from Meissen [1], Delft, China, England, France… belonging mainly to Sèvres collection, France), “Iznik” style tiles covering walls of Edirne mosques (Turkey World Unesco Heritage, Fig. 1 [2]) and Chinese and Vietnamese shards excavated from a medieval harbor (Qalhat, Oman Sultanate [3]) and discuss the two possible ways to extract information: i) the blind eyes approach using PCA and cluster variation statistical analysis, and ii) the comparison of particular element ratios or contents related to the raw materials used for the paste and the glaze (alkalis and earth alkalis, iron and titanium, lead, …) and the coloring and opacifying agents (tin, cobalt, copper, arsenic, nickel, manganese, …). Expected further developments will be discussed. [1] G. Simsek, F. Casadio, Ph. Colomban, K. Faber, L. Bellot-Gurlet, G. Zelleke, V. Milande, E. Moinet, Journal of The American Ceramic Society 97 (2014) 2745-2754.[2] G. Simsek, O. Uunsalan, K. Bayraktar, Ph. Colomban, Ceramics International 45 (2019) 595-605.[3] G. Simsek, Ph. Colomban, S. Wong, B. Zhao, A. Rougeulle, N.Q. Liem, Journal of Cultural Heritage 16 (2015) 159-172
pXRF study of pottery : State of the art and perspectives
No full textInternational audienceAlthough portable/handheld X-ray Fluorescence instruments are available from decades, the number of publications reporting on-site analyses of pottery remain very limited. Most of them present the paste composition and not the (glazed) décor. After a brief review of the published works about the studies of pottery and glass, we will discuss the advantages (on-site analysis and selection of artefacts, higher number of objects, better statistics …) and drawbacks (light elements and some traces not measured, difficulty to determine the analyzed volume, low quantity of informative elements…). We will take examples on three important series previously analyzed, 18th- century stonewares (from Meissen [1], Delft, China, England, France… belonging mainly to Sèvres collection, France), “Iznik” style tiles covering walls of Edirne mosques (Turkey World Unesco Heritage, Fig. 1 [2]) and Chinese and Vietnamese shards excavated from a medieval harbor (Qalhat, Oman Sultanate [3]) and discuss the two possible ways to extract information: i) the blind eyes approach using PCA and cluster variation statistical analysis, and ii) the comparison of particular element ratios or contents related to the raw materials used for the paste and the glaze (alkalis and earth alkalis, iron and titanium, lead, …) and the coloring and opacifying agents (tin, cobalt, copper, arsenic, nickel, manganese, …). Expected further developments will be discussed. [1] G. Simsek, F. Casadio, Ph. Colomban, K. Faber, L. Bellot-Gurlet, G. Zelleke, V. Milande, E. Moinet, Journal of The American Ceramic Society 97 (2014) 2745-2754.[2] G. Simsek, O. Uunsalan, K. Bayraktar, Ph. Colomban, Ceramics International 45 (2019) 595-605.[3] G. Simsek, Ph. Colomban, S. Wong, B. Zhao, A. Rougeulle, N.Q. Liem, Journal of Cultural Heritage 16 (2015) 159-172
Protecting Animals 36: Author Witi Ihimaera
No full textIn this very special episode of Knowing Animals I am joined by beloved New Zealand author Witi Ihimaera. Witi has written many books featuring nonhuman animals. He offers us a non-colonial lens through which to think about the human/nonhuman relationship
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Osmanlı Devleti’nde Okutulan İlk Fizik Ders Kitabı: Usûl-i Hikmet-i Tabiiye (Doğa Felsefesine Giriş)
No full textBu makalede modernleşmenin eğitim üstündeki etki ve sonuçları paralelinde Osmanlı Devleti’nde modern bilimlere ve fizik eğitimine nasıl bakıldığı, dönemin ilk fizik ders kitabı olan Usûl-ü Hikmet-i Tabiiye (Doğa Felsefesine Giriş) aracılığıyla açıklanmaya çalışılmıştır. Modernleşmenin anahtarı olan eğitsel gelişmeler, ülkede eski eğitim kurumlarının yanı sıra yeni eğitim kurumlarının açılmasına da öncülük etmiştir. Söz konusu yeni eğitim kurumlarının materyal ihtiyacı yeni ders kitaplarını bir zorunluluk haline getirmiştir. Usûl-ü Hikmet-i Tabiiye bu ders kitaplarından birisidir. 1885 yılında ilk baskısı yapılan kitabın yazarı Mehmet Emin Derviş Paşa’dır. Mühendishanelerde okutulmak için hazırlanan eser, yalın anlatımı ve ele aldığı konuların çeşitliliği, fotoğraflarla zenginleştirilmiş içeriği bakımından da değerlidir. Anahtar Kelimeler: Modernleşme, Eğitim, Felsefe, Doğa Felsefesi, Fizik The First Physics Textbook in Ottoman State: Usûl-ü Hikmet-i Tabiiye (Introduction to the Philosophy of Nature)Abstract: In this article how modern sciences and physics education was perceived in the Ottoman Empire in parallel with the effects and results of modernization on education is tried to be explained through the era’s the first physics textbook called Usûl-ü Hikmet-i Tabiiye (Introduction to the Philosophy of Nature). “Education”, being the key to the modernization, pioneered to the foundation of new educational institutions as well as the older educational institutions. The material need of the new educational institutions in question necessitated the use of new textbooks. In this respect, Usûl-ü Hikmet-i Tabiiye is one of these textbooks. The author of the book, whose first publication was in 1885, is Mehmet Emin Derviş Paşa. This work, prepared to be taught in engineer schools, is valuable for its plain expression, variety of subjects it deals with and its content enriched with photographs. Keywords: Modernization, Education, Philosophy, Nature Philosophy, Physic
Author in Essay by I. A. Goncharov “Pepiniere”
No full textFeatures of the embodiment of the author’s position in the essay by I. A. Goncharov “Pepiniere” are considered. The relevance of the study is due to the poorly studied poetics of this work. A review of the scientific literature on relevant topics is performed. Methodological and theoretical definitions are given. The scientific novelty of the article is in the fact that for the first time attention is paid to artistic techniques that allow to identify the author's position in the specified literary text. The author of the article grounds her opinion from the fact that, despite the dominance of the subjective point of view, other characters’ views stand out in the work. It is concluded in the study that the text of the work represents a biographical author and author-creator. It was established that the position of the author-creator is expressed through the title, epigraphs, which are quotes, as well as through different points of view, including the author-character, the author-narrator, the characters of the work. The author of the article dwells in detail on different ways of expressing the points of view of the author-character and the author-narrator. It is proved that the point of view of the author-character and the author-narrator can intersect, they are interchanged. The author's development of the term comic “point of view” is presented in the article
- …
