FEASIBILITY STUDY OF THE USE OF UAM FOR PASSENGER AND CARGO TRANSPORTATION IN THE PERUVIAN MARKET

Victor Carlos Leyva Silva The Graduate School Korea Aerospace University 2022 국내석사

Urban Air Mobility (UAM) is a new travel concept, which may greatly change the commonly understood urban travel mode and greatly affect the current mode of travel. 2030 is just around the corner, that is the year chosen to launch this revolution of new technologies and terms to the market, therefore, we need to have a solid foundation to support this revolution in air transport for people and cargo. Considering environmental issues and serious air pollution in cities, it is necessary to conduct an environmental assessment of new transportation solutions before launching them, it is also necessary to create local regulations and involve all local governments in the region in the development of this new economic activity. Keywords; Pollution enviromental, urban, Safety management system, work experience, family size, educational level, job satisfaction, Revolution.

Comparison of the Original Operetta Arizona Lady, by Emmerich Kalman, with its 2015 Adaptation Performed by Arizona Opera

Leyva, Elizabeth Lynette ProQuest Dissertations & Theses Arizona State Univ 2019 해외박사(DDOD)

Emmerich Kalman (1882-1953) was a leading composer during the Silver Age of Viennese operetta. His final work, Arizona Lady (1954), premiered posthumously, on Bavarian Radio, January 1, 1954. The stage premiere followed on February 14, 1954, at the Stadttheater in Bern, Switzerland. It is his only operetta that is set entirely in the United States, in Tucson, Arizona. Arizona Opera commissioned and produced a new adaptation of Arizona Lady, which was performed in October 2015, in both Tucson, Arizona, and Phoenix, Arizona. The libretto was heavily revised, as well as translated, primarily into English with some sections in Spanish and German. Through comparison of the original and adaptation, this study examines the artistic decisions regarding which materials, both musical and dramatic, were kept, removed, or added, as well as the rationale behind those decisions. The changes reflect differences between an Arizonan audience in 2015 and the European audience of the early 1950s. These differences include ideas of geographical identity from a native versus a foreign perspective; tolerance for nationalistic or racial stereotypes; cultural norms for gender and multiculturalism; and cultural or political agendas. Comparisons are made using the published piano/vocal score for the original version, the unpublished piano/vocal score for the adaptation, archival performance video of the Arizona Opera performance, and the compact disc recording of the 1954 radio broadcast premiere.

Carlos Chavez: An examination of his compositional style with a conductor's analysis of "Sinfonia India" as arranged for concert band by Frank Erickson

Leyva, Jesse Arizona State University 2010 해외박사(DDOD)

Carlos Chavez is widely regarded as the most influential Mexican composer of the 20th century. Often referred to as a leader of the so-called "Aztec Renaissance" that occurred from the 1920's through 1940's, Chavez composed over 200 works. Nationalism, modernism, and universalism were the primary characteristics of his compositional style. Chavez composed Sinfonia India in 1935 and it remains his most well-known and celebrated composition. In 1971, G. Schirmer, Inc. published Frank Erickson's arrangement of Sinfonia India for concert band. Although a fair amount of research has been devoted to Carlos Chavez and the original orchestral version of Sinfonia India, information about Erickson's concert band arrangement is very scarce. The aim of this research paper is to fill this void and provide wind band conductors a resource on the composer, the composition, and the arrangement. It is the author's hope that this dissertation will generate new interest within the wind band community not only in Sinfonia India, but also in his other works of Carlos Chavez for concert band and chamber wind ensemble.

Economic growth in Mexico: A regional approach

Leyva, Gerardo Parra Cornell University 2000 해외박사(DDOD)

This piece of research constitutes one of the very few efforts to date that explicitly deal with the largely neglected question of what determines the differences in economic growth among the different regions of Mexico. It consists of three independent papers that use information for the 32 Federal Entities and the main 106 cities of the country to develop a series of econometric tests aimed to shed some light in the solution of this question. The results of the three papers show evince of conditional convergence among Federal Entities at a rate consistent with the Iron Law of Convergence, which says that laggard economies tend to shorten the distance that separates them from the advanced ones at a rate of roughly 2% per year. Additionally, economic structure, in special “diversity” has a very important influence in the rate of growth of manufacturing activities across Federal Entities. Infrastructure, in turn, has some relevance in the explanation of the accumulation of industrial mass but not in the rate of growth of productivity. In contrast, human capital plays a more important role in growth in productivity than in growth in mass. Even tough good evidence in favor endogenous growth was encountered, the differences in human capital do not always play an important role in determining the differences in growth among Federal Entities. Also, the influence of human capital is different from sector to sector and in some cases it can even be negative. Additionally, the density of firms per unit of product and the degree of industrial concentration as well as the stocks of infrastructure, seem not to be particularly relevant to improve productivity.

"?QUE SON LOS NINOS?": MEXICAN CHILDREN ALONG THE UNITED STATES-MEXICO BORDER, 1880-1930 (UNITED STATES-MEXICO)

LEYVA, YOLANDA CHAVEZ THE UNIVERSITY OF ARIZONA 1999 해외박사(DDOD)

This dissertation is a study of Mexican children along the U.S. border from 1880 to 1930. The study explores the ways in which Mexican children were incorporated into the growing capitalist border society of the late nineteenth and early twentieth centuries. During this period, there were demographic changes in both the United States and Mexico as children comprised an increasingly significant portion of the population. As a result of this growth, and the heightened visibility of children, both nations focused on the implications, both positive and negative, of being “nations of youth.”. Along the border, the fears and hopes associated with children were accentuated as a result of the already difficult ethnic relations between Mexicans and Anglo Americans and shifting international relations between Mexico and the United States. Mexican children became symbols of the tremendous socio-economic changes taking place along the border. Issues of control, which expressed themselves in the creation of institutions to monitor immigration, expanding educational and social service systems, and the rapid incorporation of Mexican children into the labor force, were hotly contested. On the U.S. side of the border Mexican children entered a highly racialized society in which Mexicans were considered inferior and useful only as low-paid workers. Yet at the precise time that the population of Mexican children was growing along the border, American society advocated a more protective stance towards children. As a consequence of these two circumstances, Mexican children played a unique role in this region. Mexican children were recruited as workers, and expected to act as adults by both employers and family. Schools sought to educate them yet the education was limited by ethnic stereotypes which dictated that Mexican children would become nothing more than low-paid, menial laborers. Mexican parents attempted to control their children, particularly in maintaining a Mexican identity and values while Americanization efforts undermined their parental authority. American nationalists viewed them with alarm, fearful that the growing numbers of Mexican children would overwhelm that Anglo American population. The Mexican government, in turn, viewed the emigration of Mexican children as a cultural and economic loss to the nation.

Sterilization of capital inflows: Its impact on market liquidity and currency crises

Hernandez Leyva, Liliana Noelia The University of Chicago 2001 해외박사(DDOD)

During the first part of the 90's most of the emerging economies experienced strong capital inflows, as a result of various external and internal factors. Most of these economies operated at the time under fixed exchange regimes, and the capital inflows raised the concerns that these flows could generate inflationary pressure, and the potential destabilization of the fixed exchange regime. In order to control for this effect, numerous countries adopted sterilization policies, mainly in the form of open market operation. The present work aims to develop a theoretical analysis to evaluate the effectiveness and market impact of this type of monetary policies, using a portfolio allocation model that incorporates an innovative liquidity-in-advance restriction to derive the demand for assets of different maturity structure. The analysis developed up to now raises the concern that this kind of intervention, under certain circumstances, might have a negative impact on the stability of a fixed currency regime. The general conjecture of the model is that, by issuing short-term public bonds to absorb domestic credit and to sterilize capital inflows, the monetary authorities affect not just the currency composition, but also the maturity structure of private agent's portfolio. This portfolio effect implies the possible increase in the liquidity of the market, and the consequent increase in the vulnerability of the system to speculative attacks. The model derives the policy implication that under certain circumstances, sterilization operations realized through highly liquid instruments, although conceived as a mechanism oriented to stabilize the market, might turn out to be a self-defeating policy.

Dance Literacy in the Studio: Partnering Movement Texts and Residual Texts

Riggs Leyva, Rachael The Ohio State University 2015 해외박사(DDOD)

In this series of qualitative case studies, I study current conceptions of "dance literacy," and explore dance literacy as contextualized within various studio practices. Literacy has traditionally meant reading and writing alphabetic texts, but more recently has stood in for knowledge about a particular field or meaning-making processes. I ask "how are dancers literate" across several different kinds of studio activities (teaching and learning technique, making choreographic work, re-staging repertory, documenting artistic process) and how these dance literacies contribute to creating dance specific knowledge. I examine dance literacy in three areas: reading, writing, and uses of written scripts. Through multimodality --- visual, kinesthetic, aural/oral, tactile, verbal/linguistic, alphabetic/textual modes of communication --- dancers process sensate information about what they see, feel, hear, and sense. I also examine how dancers produce notational and alphabetic residual texts in support of their movement texts. I explore both dance literacy and interactions between dance and literacy. Dance literacy scholarship has typically fallen on two sides of a literacy/orality binary, defining dance literacy either as multimodal processes of dance-making or the use of and fluency in written dance notation systems. Rarely have dancers or dance scholars considered these two seemingly opposing definitions in relation to one another. By drawing connections between traditionally defined literacies and multimodal literacies to examine how they produce dance-specific knowledge and affect meaning-making in the studio, I problematize the conception of dance as an "oral-only" enterprise and reveal an oral-literate continuum that subverts the literacy/orality divide.

Rapid and Durable Integration of Articular Cartilage Via Photochemical Bonding: Benchtop Optimization, In-Vitro Analysis & Preclinical Model

Arvayo, Alberto Leyva ProQuest Dissertations & Theses Stanford Universit 2018 해외박사(DDOD)

Essays on Unemployment and Job Search

Jimenez, Gustavo Antonio Leyva University of Minnesota 2016 해외박사(DDOD)

This thesis consists of two chapters. In Chapter 1 I show evidence of job search behavior for the unemployed in the U.S. By using the American Time Use Survey (ATUS) between 2003 and 2014, I document that the unemployed in the U.S. appear to allocate their time to job search regardless of the state of the economy. They increase search intensity only slightly if at all during recessions. While their search intensity depends on a number of factors that change over the business cycle, I primarily argue that a countercyclical value of a job is the most promising explanation to reconcile the evidence with the theory. I show this by providing estimates of the cyclicality of the value of a job in the U.S. To infer the cyclicality of the value of a job, I build on Chodorow-Reich and Karabarbounis (2015), who construct estimates for the opportunity cost of employment. I develop a strategy to gauge an upper bound for the size of job search costs based on the size of the value of non-working time. I discipline these estimates by using an expression for the value of a job that emerges from a search model. In Chapter 2, I address the role of risk aversion in shaping the job search behavior over the business cycle. I first show that a sufficiently high degree of risk aversion could make the unemployed look for work in a countercyclical fashion, as the data suggests: more intensely in recessions and less intensely in booms. Empirically, I show that such a behavior is inconsistent with the degree of risk aversion used pervasively in the business cycle literature. With the aim of assessing to what extent risk aversion could still play a role, I introduce consumption commitments into an otherwise job search model. As shown by Chetty and Szeidl (2007), commitments in consumption could amplify the degree of risk aversion, the reason being an uneven adjustment in consumption along different spending categories in response to wealth shocks. Empirically, I find partial support to the insights stemming from the theoretical framework. The results show that the amplification is sensitive to the classification of small and large shocks. I discuss theoretical avenues to improve our understanding on the role of commitments in shaping the job search behavior.