Dissertations / Theses on the topic 'Prices, spain'
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Cousido, Cores Carlos, and Cores Carlos Cousido. "Empirical Evidence of Factors Affecting Fine Wine Prices Using Hedonic Price Model The Case of Spain, France and Italy." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/624136.
Full textPérez, Zúñiga José María. "The Tax Categories in Spain and Latin America: Special Consideration of Social Contributions." Derecho & Sociedad, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/117265.
Full textEl concepto de tributo no es una cuestión pacífica, como demuestra un análisis de las constituciones y la normativa tributaria de España y los países de América Latina. Tampoco lo es el concepto de cotizaciones sociales, consideradas como una categoría tributaria (las contribuciones especiales) por el Modelo de Código Tributario para América Latina, pero no por la doctrina científica.
Ruano, Lorena. "Institutions, the Common Agricultural Policy, and the European Community's enlargement to Spain, 1977-1986." Thesis, University of Oxford, 2001. http://ora.ox.ac.uk/objects/uuid:373a1b83-4ec7-4e81-b270-898729a5bafc.
Full textSchröder, Christian Philipp [Verfasser], and Peter [Akademischer Betreuer] Spahn. "A monetary-fiscal theory of prices in modern DSGE models / Christian Philipp Schröder ; Betreuer: Peter Spahn." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2019. http://d-nb.info/1177881454/34.
Full textNavas, Fernández Miguel. "Spanish scientific journals in Web of Science and Scopus Adoption of Open Access, relationship between price and impact, and internationality." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/401332.
Full textAquesta tesi doctoral estudia les revistes científiques espanyoles actives i amb un nivell de qualitat reconegut internacionalment, per tal d’analitzar les seves característiques principals, el grau d’adopció d’Accés Obert, la relació entre el preu i l’impacte bibliomètric, i els seus elements d’internacionalitat. Web of Science (WoS) y Scopus van ser seleccionades com a les fonts adequades per identificar la població objecte d’estudi. Després de depurar els errors detectats a les llistes de revistes extretes, es va obtenir una llista definitiva de 445 revistes. Es va definir un conjunt d’indicadors i es van recollir totes les dades de la font d’informació principal (el lloc web o la versió impresa de cada revista). Finalment, es van realitzar proves de correlació i associació per explorar relacions entre variables. S’ha posat de manifest que la població de revistes espanyoles indexades a WoS y Scopus ha crescut de manera sostinguda durant els darrers anys: hi havia 300 títols al 2012, 406 al 2013, i 445 al 2015. El 69,7% dels darrers van ser creats després de 1980 i la seva edat mitjana és de 30 anys. Aquesta selecció de 445 revistes suposa el 25% dels títols publicats a Espanya, tot i que les àrees temàtiques no hi estan reflectides de manera proporcional: la ciència, tecnologia i medicina i estan sobre-representades, mentre es recull un baix percentatge sobre ciències socials i humanes. Tot i així, el 84% de les revistes es concentren en només tres dels set camps considerats en aquest estudi: 35% en ciències socials, 32% en ciències de la salut, i 18% en arts i humanitats. Les universitats i els centres d’investigació publiquen el 43% de les revistes estudiades, amb especial menció del CSIC (Centre Superior d’Investigacions Científiques). La majoria d’aquestes revistes usen Open Journal Systems (OJS), plataforma on es recolza el 34% del total. Les institucions acadèmiques també publiquen principalment revistes sobre arts i humanitats (en castellà) i sobre ciències socials. Aquests títols solen estar disponibles en línia, sense versió impresa, i en Accés Obert. Les editorials comercials són les segones en importància, ocupant-se del 32% de les revistes, la majoria de les quals tracten sobre ciències de la salut. Aquestes entitats són responsables de moltes de les escasses revistes que inclouen càrrecs per publicació (“Article Processing Charges”, APC), tant en Accés Obert com híbrides (aquestes últimes, principalment en anglès). Elsevier és l’editorial amb més títols, publicant el 17% de les revistes d’aquest estudi. Les societats científiques, associacions professionals i altres institucions privades sense ànim de lucre publiquen el 21% de les revistes, i a més a més col·laboren en un altre 24%, del qual s’ocupa principalment Elsevier. La participació d’aquest tipus d’institucions és crucial, ja que en total arriba al 45% de totes les revistes de la població analitzada. Finalment, els ens governamentals responen només del 4% dels títols Quant als idiomes, quasi la meitat de les revistes (47%) estan publicades només en castellà. No obstant, el 26% està publicat en castellà i anglès, i el 18% exclusivament en anglès. La presència de la resta d’idiomes és residual. L’accés lliure és el tipus d’accés més comú (64,5%), seguit pel restringit (16,6%), embargat (14,4%) i híbrid (4,5%). És freqüent a les editorials acadèmiques i a les ciències socials, mentre que l’accés restringit i híbrid és més comú entre les comercials i normalment es troba als àmbits de la ciència, tecnologia i medicina. Les revistes en Accés Obert, considerades com aquelles disponibles en accés lliure i amb permisos d’auto-arxiu, suposen el 56,9% d’aquesta població. Segons estudis anteriors, aquesta dada indica un augment sostenible del grau d’adopció de l’Accés Obert. Els càrrecs per publicació s’estan començant a introduir a Espanya, però de moment només estan presents al 7% d’aquests títols. Tant les revistes en accés lliure amb APC com les híbrides es publiquen per editorials comercials, en anglès i amb alts indicadors d’impacte bibliomètric. Els preus de subscripció anual són molt més alts a revistes sobre ciència, tecnologia i medicina. També ho són als títols publicats per editorials comercials i a revistes en anglès. No obstant, la diferència de preu disminueix si es considera el preu per article, perquè les revistes més cares solen aportar més contingut científic. Els preus dels APC són, de mitjana, deu vegades més cars a les revistes híbrides que a les d’accés lliure. El Factor d’Impacte (IF, que només està disponible per al 27% de les revistes estudiades), el Scimago Journal Rank (SJR) i el Source-Normalized Impact per Paper (SNIP), tenen en general valors més alts per a les revistes sobre ciència, tecnologia i medicina, amb APC i en anglès. Mentre que els valors més elevats d’IF apareixen a les revistes publicades per editorials comercials, els SNIP més alts estan relacionats amb associacions i societats. Els preus de subscripció no guarden relació amb cap indicador d’impacte, ni a nivell de volum anual ni a nivell d’article. Pel contrari, els preus dels APC correlacionen moderadament amb indicadors d’impacte, però només amb SJR i SNIP, no pas amb IF. L’anglès, els articles escrits per autors estrangers, les col·laboracions internacionals i els experts estrangers dels equips editorials han estat considerats com a elements d’internacionalitat mesurables. Excepte les col·laboracions internacionals, amb molt poca incidència (especialment baixa en arts i humanitats), tots els elements tenen una mitjana general aproximada del 33%, tot i que depenen molt de l’àrea temàtica i del tipus d’accés. La llengua anglesa és la més comú en ciència, tecnologia i medicina, així com a les revistes publicades per editorials comercials i també en publicacions amb APC. Els autors d’altres països tenen major presència a ciències de la salut, matemàtiques i física, i també a revistes amb APC. La proporció d’estrangeria és similar entre autors i equip editorial, però amb diferències menys notables entre categories. La proporció d’experts forans és també inferior a ciències de la salut, i superior a enginyeries. Les revistes publicades per institucions acadèmiques solen incloure més investigadors amb filiació estrangera als seus equips editorials que la resta de revistes. En general, els elements d’internacionalitat presenten patrons de distribució similars, especialment quant a autors i experts estrangers. Finalment, es descriuen les limitacions d’aquest estudi, possibles línies futures d’investigació, i conclusions globals.
Lloret, Sylvain. "Entre princes et marchands : les agents généraux de France à Madrid dans les interstices de la diplomatie (1702-1793)." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUL069.
Full textBetween 1702 and 1793, eleven men held the position of general agent of the Navy and Trade of France in Madrid. Acting without any official status, these envoys of the Secretary of State of the Navy were the centerpiece of a French informative network in Spain. Created after the advent of the Bourbon Philip V to the Spanish throne, these experts, keystone of the French consular network in the Peninsula, put their economic competence at the service of a commercial alliance between both monarchies. Their action, social surface, knowledge of Spain and discourse, helped these intermediaries seize a function with blurry outlines. Men of the shadow under the orders of the French ambassador, they acquired such a dimension that they became the true artisans of a Franco-Spanish commercial diplomacy in the eighteenth century. These go-between rise the matter of the growing interactions between trade and diplomacy. The study tends to show how these hybrid figures were perfectly in between several worlds : France and Spain on the one hand, trading and the political sphere on the other. Informants, negotiators and mediators, these agents encourage us to question the path that led from information to negotiation. Thus, what is at stake in this study is to show how these men, actors of the interconnection of the two monarchies, drew the frame for a specific dialogue which aimed to fill the interstices between the realities of the field and the more political debate between governments
Oyedotun, Ibukun. "The Impact Of Divestitures (Spin-offs And Sell-offs) Announcements On The Share Price Performance Of Parent’s Companies: South African Listed Companies." Master's thesis, Faculty of Commerce, 2019. http://hdl.handle.net/11427/31184.
Full textLišková, Klára. "Finanční a ekonomická krize ve Španělsku." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-71831.
Full textPark, Chunsoo S. M. Massachusetts Institute of Technology. "An empirical test of the relationship between gains/losses on disposal of discontinued operations arising from spin-offs and stock prices based on the extended functional fixation hypothesis." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98996.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (page 20).
Under the Korean equivalents of International Financial Reporting Standards (K-IFRS), which was adopted in 2011, companies are allowed to recognize gains/losses on disposal of discontinued operations (GDDO) when they spin off part of their operations. GDDO reflects the gap between the fair value and the book value of the spun-off operations. However, the fair value is not based on the fair value of the assets classified as held for sale but based on the valuation of the operation by using the Free Cash Flow to the Firm (FCFF) method. Since the FCFF method estimates the value of the operation by discounting all future free cash flows from the operation, it is not accurate but varies remarkably with a small change in the discount factor. Furthermore, only spun-off operations are evaluated, but sustained operations are not. Lastly, shareholders of the parent company receive equivalent shares in the new company in order to compensate for the loss of equity in the original stocks. This implies that there should be no gains/losses from the division of the company unless there is a huge quantifiable impact from spinning off. For these reasons, it is improper to see GDDO as a real gain; rather, it is proper to see it as a paper gain. According to the extended functional fixation view, unsophisticated investors improperly implement a wrong analysis of such complicated accounting information into their investment decision making. Herein I attempt to test whether unsophisticated investors are affected by GDDO with an assumption that there are some unsophisticated marginal investors who see GDDO as a real gain and they impound this information in price. My hypothesis is tested by examining the stock price reaction to quarterly earnings announcements of firms which have undergone spin-offs since K-IFRS was adopted. On the financial performance announcement date, the firm's stock price is theoretically affected by the difference between the real earnings and the expected earnings (earnings surprise: ES). In a case in which the firm announced earnings including GDDO, only the real earnings, excluding GDDO, less the expected earnings should be reflected in the stock price movement-if all investors are sophisticated enough not to regard GDDO as real earnings. However, I test whether GDDO also affects the stock price movement in this situation separately from the impact from the earnings surprise, which implies that there are unsophisticated investors and the extended functional fixation hypothesis holds in the GDDO case. Eleven Korean companies that are traded on the Korean stock market and listed on the Korea Composite Stock Price Index (KOSPI) were subjected to the test. These companies meet the following constraints: (1) They have undergone spin-offs, and (2) They recognized GDDO on their income statement but do not directly add or deduct the amount from equity items on the balance sheet. I run a regression test on the excess stock return which is calculated by using historical two-day return, historical beta, the impact from earning surprise (ES), and the impact from GDDO. The result shows higher R² and lower p-value for the case when both the ES and GDDO are chosen as x-variables than the case when the earnings surprise is solely chosen as an x-variable. The p-values for x-variables in both cases were smaller than 0.01. The test result implies that the extended functional fixation hypothesis might hold in this case. I conclude that including GDDO as an item on the income statement can affect some investors' decision making and demand for the stock.
by Chunsoo Park.
S.M. in Management Research
Příhoda, Pavel. "Ekonomická krize ve vybraných zemích EU: Španělsko a Irsko." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-74202.
Full textRamón, Solans Francisco Javier. "Usos públicos de la virgen del pilar : de la guerra de la independencia al primer franquismo." Paris 8, 2012. http://www.theses.fr/2012PA084155.
Full textThe public dimension of the cult to the Virgin of Pilar is the research’s aim of this thesis. Two aspects emerge from this subject: the study of the successful traditionalization of this devotion; and, based on this analysis, observe the political, social and cultural changes in Catholicism at the local, national and global level. The assumption is that the Virgin of Pilar play an important role as a mobilizing element, a rallying point where people can be recognized as a symbol with which one identifies. The depth of its social and cultural anchoring, but its popularity has transformed the Virgin of Pilar into a distribution’s vector of certain worldviews and national policies. In the first part, we saw the process of traditionalization of the Virgin of Pilar as the sacred center of Zaragoza, which helps to explain the important role that played her cult in the crisis of the Old Regime, as a legitimation’s factor and also as an instrument of mobilization and reassuring of the public. By the mid-nineteenth century, the political, social and cultural changes have led to the development of Marian devotion and the appearance in Spain of a nationalcatholic political culture which defends the confessionalisation of the state face the challenge of secularization. This political culture has benefited from the fruitful cultural substrate of Catholicism, including such powerful symbols like the Virgin of Pilar, to strengthen. Through this Marian cult, we saw the development of National Catholicism and his came to power in Spain with the two dictatorial regimes of Primo de Rivera and Franco
Tudela, Vázquez Enrique. "Marcharse lejos. Migraciones granadinas a Barcelona durante el primer franquismo (1940-1960)." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/668226.
Full textThis thesis is a study of internal Spanish migration in the mid-twentieth century, focusing on the causes and also about specific aspects of the multiple forms of community integration and job placement that migrants developed in postwar Barcelona. The geographical areas chosen are mainly numerous rural towns in the Andalusian province of Granada, distributed throughout almost the entire province and the city of Barcelona, including various industrial cities in its metropolitan area. The period under investigation covers the first two decades of the Franco dictatorship, 1940 and 1950, although the first chapter incorporates a more far-reaching historical perspective. The first chapter analyses the economic development of Granada prior to the civil war and the development of the local labour movement until the end of the conflict. The second chapter deals with the study of the causes of migration in the post-war period. To this end, we reconstruct the various forms of repression linked to the establishment of the Franco dictatorship and the relationship between the repression and the emigration of Granada’s workers. The third chapter is intended to analyze the causes of the emigration of the rural population of Granada, in this case through an analysis of agricultural crises and its effect on the stratified society of rural Granada. The fourth chapter recounts the experiences of travel and integration of immigrants from Granada to Barcelona. This section points out the difficulties for relocation faced by immigrants from Granada and what they could expect in terms of finding a home. Finally, the fifth chapter explores the dynamics of labour market insertion for immigrants in Barcelona, analyzing the sector's opportunities and conditions as well as the pressures and motives underlying migrant labour insertion.
Guster, Ionel Bogdan. "A bird’s-eye view of charge and spin density waves from first principles calculations." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667870.
Full textThis thesis deals with the electronic structure of low dimensional metals in the form of either single layers or bulk. Low dimensional metals often exhibit electronic instabilities like charge or spin density waves. A central role in most of the theoretical approaches to understand these instabilities is played by the notion of Fermi surface nesting. Very often this is considered to be the driving force of these instabilities. Yet a careful examination of the experimental information casts strong doubts about the appropriateness of such notion for a considerable number of these conductors. The object of the present thesis is an appraisal of this situation based on the calculation of the Lidhard response function as well as the phonon band structure for a series of low dimensional conductors based on accurate first-principles DFT calculations. Altogether we have studied from the first principles calculations standpoint the following classes of materials: transition metal dichalcogenides (TiSe2, TiTe2 and NbSe2), oxides (blue bronze, monophosphate tungsten bronzes, layered perovskite-related AnBnO3n+2 niobates and titanates, Magnèli phases Mo4O11 and Mo8O23), transition metal trichalcogenides (NbS3, NbSe3, TaS3, ZrTe3) and tetrachalcogenides (TaTe4, (TaSe2)4I), Bechgaards salts ( (TMTSF)2X with X = ClO4, NO3, PF6) and rare earth intermetallics (LaAgSb2) . In this document we report the results for six of these materials: TiSe2, TiTe2, NbSe2, the potassium blue bronze, the Bechgaard salts and TaTe4. As a result of this work, we have been able to show that: 1) The CDW mechanism in TiSe2, TiTe2, NbSe2 and TaTe4 is a phonon mediated mechanism and completely unrelated to the Fermi surface nesting mechanism; 2) 6 different structure can coexist in the CDW state of NbSe2; 3) in the blue bronze the Peierls transition can be well accounted for by the weak electron-phonon coupling theory in the adiabatic approximation. 4) that in the Bechgaard salts the Lindhard response is found to change considerably with temperature and these changes are clearly associated with dimensional crossovers.
Andersson, Ann-Charlotte, and Charlotte Magnusson. "Budgivningsprocessen vid ett fastighetsköp : lockpriser kontra accepterat pris." Thesis, Högskolan i Gävle, Avdelningen för ekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-11419.
Full textThis is a survey where we compare the pricing of properties that are for sale in Sweden and Spain. To make delimitation, we have chosen to compare the pricing in the inner city of Stockholm of Sweden with the pricing in Palma in Mallorca, Spain. The cap rates phenomenon has been very criticized in the Swedish media in the latest couple of years. Because of this criticism, many real estate agents in the inner city of Stockholm are working to avoid cap rates and introduced the concept of using acceptable prices. However, acceptable price rates are perceived as a replacement name for the cap prices. Although the Mäklarsamfundet, of Sweden, disagrees with the use of cap rates, we have trough our interviews with real estate agents in the inner city of Stockholm received that this concept is still used in the pricing of properties. We have, through our interviews with property owners in Stockholm and Palma, met several property owners who have felt cheated when they bought a property at a significantly higher final price than the asking price. We have as well met several property owners who are satisfied with the Swedish pricing. But most people prefer to buy or sell a property at fair agreed price, using acceptable pricing. Many of the Spanish property buyers who we have interviewed are critical to the Spanish pricing, where the bidding goes down. This despite that most of them, managed to negotiate down the final price. Most of the criticism is based on that the prices are not related to market price, which, despite the cap rates, is in Sweden.
Le, Corre-Carrasco Marion. "Le sacré espagnol aux prises avec la Modernité (1868-1923) : étude d'un motif iconographique et littéraire, au carrefour de l'identité nationale et de la création artistique." Thesis, Paris 10, 2010. http://www.theses.fr/2010PA100143/document.
Full textDuring the transitional period between the 19th and the 20th century, Spain experienced an unprecedented revolution, both religious and cultural. The issue of the sacred enabled to crystallize what is at stake during this crisis. A thoroughly cross-conceptual approach shows the sacred as a keystone for the mayhem that Spanish people underwent. The role of the church in Spanish society kept being questioned, due to the underlying conflict between those who supported the church and the others who were opposed to it. This questioning was fundamental in the difficult idiosyncratic quest which shook the nation. Artists, who were both witnesses and actors of their time, unveiled and showed this political and social tension. Firstly, the analysis of the pattern of the sacred through novels and paintings underlines the evidence of the secularization that took place. Likewise, it discloses the pregnancy of a religious culture established on a permanent basis in Spanish society. Secondly, the intrinsic polymorphous aspect of this pre-modern sacred is revealed by a typology which develops the representation of the sacred, from the most obvious to the least tangible one. This dilution of the sacred is characteristic of Modernity. Finally, beyond the study of the iconographic and novelistic pattern, an analysis of the process of the sacred enhances how the artists of this era took soundings and questioned sacrality in their works of art. It also shows how sacrality, constantly changing, could not be mastered by the artists, digging the roots of a cult for art
Serra, Armengol Maria de Lluc. "Els museus catalans en els primers anys del franquisme. Anàlisi de la utilització dels centres museístics catalans en el període 1939-1947." Doctoral thesis, Universitat de Girona, 2014. http://hdl.handle.net/10803/289569.
Full textThis thesis has as its main objective the analysis of what happened to the museums of Catalonia during the first years of the Francoist dictatorship. In order to understand this period it is necessary to analyze the role that the Servicio de Defensa del Patrimonio Artístico Nacional played in relation to the museums, and as such the impact that this institution had on the museums. This has been possible thanks to the analysis of more than 4.000 documents unknown until now.Using this historical framework we present a study of the Catalan museums at the moment that they were reopened again just after the civil war. This is also compared to the functioning of museums before the war and what happened with them during the conflict. As such, an analysis is made of the main activities that took place in the museums at this period, how the museums boards worked, as well as the institutions that existed in that moment that contributed to restart the activity in the museums as early as 1939.
Ferrer, Cayón Jesús. "La instrumentalización política de la cultura durante el primer franquismo: la Universidad Internacional Menéndez Pelayo (UIMP) y el Festival Internacional de Santander (FIS), 1945-1957." Doctoral thesis, Universidad de Cantabria, 2012. http://hdl.handle.net/10803/80772.
Full textFrom the analysis of the origins and creation of the International University Menéndez Pelayo (UIMP) and the International Festival of Santander (FIS), it delves into the knowledge of the history of both institutions during the early Franco and the relationship that they were between politics, science, culture and national identity, as well as demonstrated the essential role of international political legitimacy to the dictatorship of General Franco assigned to culture in order to combat the diplomatic isolation of Spain weighed between equators decades of the forties and fifties of last century. Also, other issues addressed in this paper are those related to the history of Spanish courses for foreigners and the history of music festivals, both concerning our country, and the historical approach to the cultural life of Santander in the immediate post-Civil War.
Barchánková, Vendula. "Analýza nákladů stavebního objektu a jejich pokrytí." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240343.
Full textHůlková, Michaela. "Cena stavby v průběhu životního cyklu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-227031.
Full textWang, Chao-Chih, and 王昭智. "Transaction Price of The Option To Adjust The SPAN Intraday Margin." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/98470821569821415332.
Full text淡江大學
財務金融學系碩士在職專班
101
Taiwan Futures Exchange has planned entire household risk margin system since 2007, the main target is for the futures commission merchants and other corporate-based. The initial implementation is that the exchange sends five times daily from SPAN parameter file, in which each of a file premarket after-hours, after only third gear. In 2008, to promote the implementation of traders end risk margin entire household total income system, the system will collect SPAN margin traders .As of this writing, the dish at least once every half hour to send parameter file. In this study, the option intraday transaction price, instant adjustment parameter file between two adjacent SPAN margin calculations. In order to understand their relevance, the research also detects the underlying commodity prices and the volatility data. In this study, using basic statistical analysis test that use the option transaction price to adjust SPAN margin is appropriate. The results showed that use the option to adjust the SPAN margin transaction prices have representation. That proposal futures commission merchant shall use the option price adjustment SPAN margin calculation, to ensure SPAN margin can always reflect the current risk profile.
Chang, Shuen-Yau, and 張順堯. "Using KeyGraph to Discover Patterns over a Span of Stock Price Rise Substantially — An Empirical Case Study on Taiwan Stock Market." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/76814524115672279652.
Full text真理大學
管理科學研究所
94
Recent studies focus on calculating intelligence to forecasting on stock market , such as Neural Networks ,Genetic algorithms etc., There are two strategies worth putting aside. First study some among the materials to show the rule from the historical data. Due to study technology progress to find that the rule of showing among the historical data is not more and more difficult, after it is enough to find the rule of showing that majority investors' analytical technology all progress to, such Investment Strategies will be difficult to obtain the competition advantage at last. Second the rules of supposing the personal share (or portfolio) of some research will be checked and presented on the same personal share (or portfolio) in different time. Neglect a bit regular to can order and reappear among the different personal share (or portfolio) in different time. KeyGraph is a tool of information visualization, it can extract patterns and links from data set, the more important thing is that it utilizes the network diagrams to present the relation of context of the data set, on the other word﹐user can get a lot of information was showing the rule, can also see that the rule presents the context with the network diagrams at the same time , It can help analyst to make reasonable scenarios and to obtain more abundant information. The hypothesis of this research is that「 personal share rise sharply , may reappear in different time and among the different personal share (or portfolio )」. KeyGraph used in conjunction with Moving Averages(MA)to find a pattern of rise sharply﹐analysis samples consists of the top 10 rate of returns in season of listed stocks. According to this design finally we can create investment strategies for stock selection and timing selection. Via the rule stock select contained in the database. there are 55 stocks in the portfolio that is selected, 4 stocks among them are chosen 2 times, It has produced 59 predictions , 32 predictions are successful with a correct prediction rate of 54.24%, make the hypothesis of this research be supported. In addition, propose 2 fund allocation strategy with portfolio in the test period, the rate of return is up to 2.96% and 12.58% separately.
Ferrero, Eduardo Ezequiel. "Dinámica de relajación del modelo de Potts de q estados bidimensional: una contribución a la descripción de propiedades de no-equilibrio en transiciones de fase de primer orden." Doctoral thesis, 2011. http://hdl.handle.net/11086/163.
Full textEstudiamos el modelo de Potts de q estados bidimensional, que presenta transiciones de fase magnéticas con temperatura de primer (q > 4) y segundo orden (q = 4). Trabajamos con simulaciones tipo Monte Carlo para las cuales implementamos distintas técnicas algorítmicas, incluyendo una implementación en GPUs. No obstante, presentamos también algunos resultados analíticos. Analizamos la Dinámica de Tiempos Cortos en la aproximación de Campo Medio del modelo de Potts con q=2 resolviendo exactamente la ecuación de Fokker-Planck asociada a la dinámica de Glauber. Confirmamos la validez de la hipótesis de escala de la Dinámica de Tiempos Cortos tanto cerca del punto crítico como de puntos spinodales. Mostramos que es posible definir el punto spinodal a partir del comportamiento dinámico del sistema a tiempos cortos. Estudiamos la metaestabilidad asociada a la transición de fase de primer orden para el modelo de Potts de q estados con q > 4. Realizamos un estudio sistemático de la dinámica del modelo de Potts luego de un enfriamiento brusco a temperaturas subcríticas. Para q > 4 advertimos la existencia de diferentes regímenes dinámicos, de acuerdo al rango de temperaturas. Caracterizamos estos regímenes y los correspondientes estados del sistema.
We analyze the bidimensional q-state Potts model, a paradigmatic model in the study of Statistical Mechanics of Critical Phenomena and Phase Transitions, which presents first (q > 4) and second order (q ≤ 4) temperature driven magnetic phase transitions and has shown a very rich dynamic phenomenology. We mostly work on Monte Carlo numerical simulations, for which we have implemented different algorithm techniques, both traditional and original, including an implementation to run code on graphics cards. Nevertheless, we also present analytic results for some cases where this approach was possible. We study the Short Time Dynamics in the Mean-Field approximation for the 2-states Potts model (the Curie-Weiss model) solving the Fockker-Planck equation associated to the Glauber dynamics for this model. We obtain closed-form expressions for the first moments of the order parameter, near to both the critical and spinodal points, starting from different initial conditions. We confirm the validity of the short-time dynamical scaling hypothesis in both cases. We show that it is possible to define the spinodal point through the short time dynamical behaviour of the system; our definition works both for meanfield and short-range interactions systems. We study the the first order phase transition associated metastability for the q-state Potts model with q >4. We show that the spinodal point is clearly separated from the transition point for all q > 4, delimiting an interval of temperatures capable to hold metastable states. We provide numerical evidence for the existence of metastable states associated to the first order phase transition. We analyze the relaxation mechanism from these states to equilibrium. We perform a systematic study about the nonequilibrium dynamics of the Potts model on the square lattice after a quench from infinite to subcritical temperatures. We analyze the long term behaviour of the energy and relaxation time for a wide range of quench temperatures and system sizes. For q > 4 we found the existence of different dynamical regimes, according to quench temperature range. We characterize those regimes and the system’s corresponding states. We analyze in detail the finite size scaling properties of different relaxation times involved, as well as their temperature dependency.
Sousa, Mafalda Oliveira Miranda de. "O paradoxo das energias renováveis na produção de electricidade: mercado ibérico." Master's thesis, 2018. http://hdl.handle.net/10071/17554.
Full textThe global economic and industrial environment has been changing, in recent years. There is a growing focus on the processes of globalization and industrialization and the environmental and climate concerns that they impact. In order to prevent and reverse those impacts, the economies are now adopting a new process, the decarbonization, which is characterized by the replacement of polluting energy sources by renewable energy sources. However, as it will be tested in this study, this type of strategy does not always promote the structure of a liberalized market, especially when considering the electricity market. Since this market is very similar to a competitive one, the renewable energies strategy could bring undesirable effects to this type of market. By using the econometric methodology with Time Series Data, this study will analyze the electricity prices behavior in Portugal and Spain after the liberalization and the MIBEL process. This methodology will also be used to study how renewable energy sources used for electricity generation affect electricity prices. Variables that represent the behavior of the market after the liberalization process will also be will be included in the model to measure their impact on the electricity prices. This study concludes that there is, in fact, a paradox between the ideals of a liberalized market and the environmental scenario that leads to the use of less polluting sources in the electricity generation.