PROPERTIES OF TWO U.S. INFLATION MEASURES (1985-2005)

Analyses are presented of 84 quarterly observations 1/85-4/05 on two U.S. index numbers of nominal prices often employed to measure inflation. Analyses are designed to answer two key questions of interest to macroeconomists. Is inflation stationary (I(0)) or stochastically non-stationary (I(1))? If it is I(1), is it scalar or multivariate? Both measures of inflation are found clearly to be I(1) and, for these measures, inflation is found clearly to be scalar. The paper also illustrates univariate analysis procedures (and report standards) considered to be more effective and convincing than those found in the existing literature on inflation measures.

Confronting the Cañada: Tackling Real-World Problems Through Service Learning

Latin American Studie

MODELING THE BIOECONOMICS IMPACTS OF CO-MANAGEMENT IN CHILEAN ARTISANAL FISHERIES

The failure of the centralized management system and the intense over-exploitation of benthonic resources along the Chilean coast motivated the design and implementation of an innovative co-management policy in 1999. Although its positive effects have already been recognized at biological and organizational level, doubts have been posed with regards to its economic sustainability. In this paper, we present a bio-economic evaluation at national level for one of the most important and valuable benthonic resources, the Loco ecosystem. A dynamic simulation model is developed in order to compare and evaluate the effectiveness of the traditional centralized management and the co-management system recently implemented in Chile. The results show that the amount of captures and effort devoted during the centralized management period were significantly underestimated due to the existence of illegal captures. On the other side, the results reveal that, after a fearful beginning, the values for revenues, capture and stock were larger than those that would have been obtained in case the former centralized system had persisted.natural resource modeling, marine policy, co-management policy, artisanal fisheries management, Territorial Use Right Fisheries, Industrial Organization, Resource /Energy Economics and Policy,

Mutant-based model of two independent pathways for carotenoid-mediated chloroplast biogenesis in Arabidopsis embryos

Chloroplasts are essential for autonomous plant growth, and their biogenesis is a complex process requiring both plastid and nuclear genome. One of the essential factors required for chloroplast biogenesis are carotenoids. Carotenoids are synthesized in plastids, and it was shown that plastid localized methylerythritol 4-phosphate (MEP) pathway provides substrates for their biosynthesis. Here, we propose a model, using results of our own mutant analysis combined with the results of others, that a MEP-independent pathway, likely a mevalonate (MVA)-dependent pathway, provides intermediates for chloroplast biogenesis in Arabidopsis embryos. The pattern of this chloroplast biogenesis differs from the MEP-dependent chloroplast biogenesis. In MEP-dependent chloroplast biogenesis, chloroplasts are formed rather uniformly in the whole embryo, with stronger chlorophyll accumulation in cotyledons. In a MEP-independent pathway, chloroplasts are formed predominantly in the hypocotyl and in the embryonic root. We also show that this pattern of chlorophyll accumulation is common to MEP pathway mutants as well as to the mutant lacking geranylgeranyl diphosphate synthase 11 (GGPPS11) activity in plastids but expressing it in the cytosol (GGPPS11cyt). It was recently described that shorter GGPPS11 transcripts are present in Arabidopsis, and they can be translated into active cytosolic proteins. We therefore propose that the MEP-independent pathway for chloroplast biogenesis in Arabidopsis embryos is an MVA pathway that provides substrates for the synthesis of GGPP via GGPPS11cyt and this is then transported to plastids, where it is used for carotenoid biosynthesis and subsequently for chloroplast biogenesis mainly in the hypocotyl and in the embryonic root

L'impacte de les noves tecnologies en l'àmbit educatiu

Treball Final de Grau en Mestre o Mestra d'Educació Primària. Codi: MP1040. Curs acadèmic 2015-2016Actualment, les noves tecnologies de la informació i la comunicació (TIC), són imprescindibles; i per tant és de vital importància usar-les dins l’aula i que els xiquets tinguen un contacte amb elles el més prompte possible. Mitjançant les TIC, les matemàtiques poden deixar de veure's com una assignatura avorrida baix la influència de les classes tradicionals, i convertir-se en classes dinàmiques, participatives i motivadores per als alumnes. En aquest Treball de Fi de Grau (TFG), s’han elaborat 3 projectes de matemàtiques per a ser emprats en l’aula de 5é curs d’Educació Primària del CEIP Castàlia, mitjançant la Pissarra Digital Interactiva (PDI), però concretament amb el software Smart Notebook. Aquest software permet utilitzar una gran quantitat de ferramentes virtuals, recursos i, a més a més, comporta un altre tipus de metodologia que no es realitza durant les classes magistrals. Es pot veure així que es fomenta l’aprenentatge col·laboratiu i al mateix temps la integració de tot tipus d’alumnat, és a dir, s’educa en igualtat. En conclusió, la PDI serveix per a desenvolupar qualsevol assignatura d’una manera diferent en la que predomina l'interès per aprendre i la col·laboració entre tots per poder aconseguir els objectius establerts, però en aquest treball queda reflectit mitjançant l’assignatura de matemàtiques

A Grounded Theory on Becoming a Revolutionary Latinx Student Leader

Research on the leadership experiences of Latinx college students and diverse populations suggests differences in the way these populations experience leadership on the college campus when compared to their White counterparts. These differences put Latinx students and other diverse student populations at a disadvantage and on the margins of leadership education. This qualitative, grounded theory study explored the leadership experiences of 11 undergraduate Latinx college students in the United States. The theory inducted from the data, and the three-stage model, brought to light three themes and 19 processes that explain how Latinx students become “revolutionary leaders” in college. A revolutionary Latinx student leader is a change agent on the college campus, taking purposeful action toward equity, inclusion, and justice. By engaging in the struggle for change (stage one), Latinx students become revolutionary leaders (stage two) who engage in positional leadership roles on the college campus (stage three) to make a difference. Latinx students must progress through the stages with determination, commitment, strength, resilience, courage, persistence, drive, and a selfless mindset. Latinx students develop into revolutionary leaders by challenging negative stereotypes, engaging in student activism, navigating White spaces effectively, and embracing Latinx culture/identity. Students committed to fundamental change and advancing the Latinx community develop critical skills and abilities to trailblaze as first-generation bilingual, bicultural students. Family members, role models, and communities influence Latinx students positively as ecosystems of support. Latinx students counteract negative influences, such as the lack of Latinx representation and mainstream societal expectations, by persisting through the struggles, building resiliency, and practicing leadership. As formal Latinx student organization leaders, students work toward positive social change and equity for all Latinx students. As revolutionary leaders, Latinx students make a difference on the college campus, find fulfillment in the struggle, and aspire to graduate from college despite the struggle. Engaging in formal leadership roles during college is one of the highest expressions of leadership for students in the study. The discussion of the findings, conclusions, and recommendations provide a framework for Latinx student leadership development and suggestions for practice and research

Optical Absorption Spectra of Ag11 Isomers by First-Principles Theoretical Spectroscopy with Time-dependent Density Functional Theory

The optical absorption spectrum of the three most stable isomers of the Ag11 system was calculated using the time-dependent density functional theory, with the generalized gradient approximation for the exchange and correlation potential, and a relativistic pseudopotential parametrization for the modelling of the ion-electron interaction. The computational scheme is based on a real space code, where the photoabsorption spectrum is calculated by using the formalism developed by Casida. The significantly different spectra of the three isomers permit the identification of the ground-state configuration predominantly present in the laboratory beams in base to a comparison between the calculated photoabsorption spectrum of the most stable configuration of Ag11 and the measured spectra of medium-size silver clusters trapped in noble gas Ar and Ne matrices at different temperatures. This assignment is confirmed by the fact that this isomer has the lowest calculated energy.Comment: 6 pages, 3 color figures, submitted to Chem. Phys. Let

Learning Bayesian Networks for Student Modeling

In the last decade, there has been a growing interest in using Bayesian Networks (BN) in the student modelling problem. This increased interest is probably due to the fact that BNs provide a sound methodology for this difficult task. In order to develop a Bayesian student model, it is necessary to define the structure (nodes and links) and the parameters. Usually the structure can be elicited with the help of human experts (teachers), but the difficulty of the problem of parameter specification is widely recognized in this and other domains. In the work presented here we have performed a set of experiments to compare the performance of two Bayesian Student Models, whose parameters have been specified by experts and learnt from data respectively. Results show that both models are able to provide reasonable estimations for knowledge variables in the student model, in spite of the small size of the dataset available for learning the parametersUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Performance of Gradient-Based Solutions versus Genetic Algorithms in the Correlation of Thermal Mathematical Models of Spacecrafts

The correlation of the thermal mathematical models (TMMs) of spacecrafts with the results of the thermal test is a demanding task in terms of time and effort. Theoretically, it can be automatized by means of optimization techniques, although this is a challenging task. Previous studies have shown the ability of genetic algorithms to perform this task in several cases, although some limitations have been detected. In addition, gradient-based methods, although also presenting some limitations, have provided good solutions in other technical fields. For this reason, the performance of genetic algorithms and gradient-based methods in the correlation of TMMs is discussed in this paper to compare the pros and cons of them. The case of study used in the comparison is a real space instrument flown on board the International Space Station