Many economic theories depend on the presence or absence of a unit root for their validity, and econometric and statistical theory undergo considerable changes when unit roots are present. Thus, knowledge on unit roots has become so important, necessitating an extensive, compact, and nontechnical book on this subject. This book is rested on this motivation and introduces the literature on unit roots in a comprehensive manner to both empirical and theoretical researchers in economics and other areas. By providing a clear, complete, and critical discussion of unit root literature, In Choi covers a wide range of topics, including uniform confidence interval construction, unit root tests allowing structural breaks, mildly explosive processes, exuberance testing, fractionally integrated processes, seasonal unit roots and panel unit root testing. Extensive, up to date, and readily accessible, this book is a comprehensive reference source on unit roots for both students and applied workers.
This book is a superbly illustrated, comprehensive guide to the differential diagnosis of thyroid nodules by means of shear wave elastography. A wealth of representative clinical cases are used to demonstrate the value of the stiffness map in identifying the degree and pattern of fibrosis. The goal is to enable readers to identify the characteristic differential diagnostic features of nodular hyperplasia, thyroiditis, follicular adenoma, and the various types of thyroid cancer and to predict the final histopathology on the basis of the imaging findings. With this in mind, correlations between the appearances on shear wave elastography and conventional ultrasonography and the findings of fine-needle aspiration cytology, core needle biopsy, and surgical biopsy are highlighted. In addition, the fundamental principles of shear wave elastography are clearly explained and related to clinical practice in the field of thyroid disease. Both radiologists and clinicians will find the book to be an excellent asset that aids in correct preoperative diagnosis.
Roman om en mand, som flygter fra Korea under Koreakrigen. Undervejs tænker han over sit splittede liv, og mindes bl.a. de to kvinder, der har været i hans liv, én fra nord og én fra syd.
Roman om en mand, som flygter fra Korea under Koreakrigen. Undervejs tænker han over sit splittede liv, og mindes bl.a. de to kvinder, der har været i hans liv, én fra nord og én fra syd
A collection of stories that take us into the hear of turbulent twentieth-century Korean history, including colonization by the Japanese, the devastation of the Korean War, and a program of rapid industrialization that exacted the heaviest sacrifice from those already at the economic and political margins of society.
This concise introduction to the fundamentals of biological treatment of wastewater describes how to model and integrate biological steps into industrial processes. The book first covers the chemical, physical and biological basics, including wastewater characteristics, microbial metabolism, determining stoichiometric equations for catabolism and anabolism, measurements of mass transfer and respiration rates and the aerobic treatment of wastewater loaded with dissolved organics. It the moves on to deal with such applications and technologies as nitrogen and phosphorus removal, membrane technology, the assessment and selection of aeration systems, simple models for biofilm reactors and the modeling of activated sludge processes. A final section looks at the processing of water and the treatment of wastewater integrated into the production process. Essential reading for chemists, engineers, microbiologists, environmental officers, agencies and consultants, in both academia and industry.
An authoritative guide to one of the world's most important collections of African-American art, with works by artists from Romare Bearden to Kehinde Wiley. The artists featured in Black Refractions, including Kerry James Marshall, Faith Ringgold, Nari Ward, Norman Lewis, Wangechi Mutu, and Lorna Simpson, are drawn from the renowned collection of the Studio Museum in Harlem. Through exhibitions, public programs, artist residencies, and bold acquisitions, this pioneering institution has served as a nexus for artists of African descent locally, nationally, and internationally since its founding in 1968. Rather than aim to construct a single history of "black art," Black Refractions emphasizes a plurality of narratives and approaches, traced through 125 works in all media from the 1930s to the present. An essay by Connie Choi and entries by Eliza A. Butler, Akili Tommasino, Taylor Aldridge, Larry Ossei Mensah, Daniela Fifi , and other luminaries contextualize the works and provide detailed commentary. A dialogue between Thelma Golden, Connie Choi, and Kellie Jones draws out themes and challenges in collecting and exhibiting modern and contemporary art by artists of African descent. More than a document of a particular institution's trailblazing path, or catalytic role in the development of American appreciation for art of the African diaspora, this volume is a compendium of a vital art tradition.
El hombre gris relata la inquietante vida de un joven que sufre las consecuencias de la fragmentación de Corea, resultado de la división del país por una guerra fratricida, pero también interferida por la presencia de tropas internacionales. Nacido en la actual Corea del Norte, su protagonista, Doko Un, se fuga hacia el Sur en compañía de su padre. Como en otras obras del autor, Choi In-Hun, más allá de las diferencias políticas entre las dos Coreas, la novela fija la atención en seres concretos que han visto tronchada su existencia y se ven arrastrados a graves conflictos de conciencia, conducidos, a veces a la despersonalización y el vacío existencial. La novela se articula en una trama que sigue los pasos del niño Doko Un –testigo de la devastación de la guerra– y del joven que en Seúl se convertirá en un ser disociado inserto en una sociedad urgida por el consumo, las pugnas políticas y la corrupción moral, al tiempo que se generan extensas zonas discursivas sobre historia, religión y filosofía en un frustrado intento por comprender ¿qué le ha sucedido a la Corea tradicional y auténtica?
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