AGT/Z2_2

We relate Liouville/Toda CFT correlators on Riemann surfaces with boundaries and cross-cap states to supersymmetric observables in four-dimensional N=2 gauge theories. Our construction naturally involves four-dimensional theories with fields defined on different Z$_2$ quotients of the sphere (hemisphere and projective space) but nevertheless interacting with each other. The six-dimensional origin is a Z$_2$ quotient of the setup giving rise to the usual AGT correspondence. To test the correspondence, we work out the RP$^4$ partition function of four-dimensional N=2 theories by combining a 3d lens space and a 4d hemisphere partition functions. The same technique reproduces known RP$^2$ partition functions in a form that lets us easily check two-dimensional Seiberg-like dualities on this nonorientable space. As a bonus we work out boundary and cross-cap wavefunctions in Toda CFT.Comment: 56 pages. v2: Clarify discrete theta angle. v3: Published in JHEP; extra references. v4: Minor sign fix; extra reference

“Statistics? Forget those old ladies!!” Exploring the nonsense of Mathematics Education

The objective of this chapter is to develop a reflection on mathematics education (ME) from a socio-political perspective, through the exploration of a parody of ME using episodes from a Mexican sitcom. Different vignettes from the sitcom, consisting of absurd, nonsensical dialogues and situations of a fictional mathematics classroom, will be described, analyzed and used as illustrations of socio-political issues previously explored in ME research (MER). These illustrations allow for a reflection on the public perception of ME as a social practice. Elements from Deleuze’s The Logic of Sense will be used to analyze the scenes. One of the conclusions is that this farcical depiction of the mathematics classroom constitutes both a critique and an acceptance of established ME practices, pointing towards an ambivalence in the way the general public perceives this school subject/social practice. Throughout the text, the value that this depiction of ME could have for suggesting new questions and insights for future research will be explored

Low-cost solution for registration and identification of rural properties: technical and financial feasibility analysis

Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do ParanáThe private property present great importance in the life of people in a society, in this manner it becomes important to know the characteristics and limitations that they present in order to ensure the organization and respect of the laws. With this, the difficulties and inconsistencies in the process of registration of properties currently used, mainly in the rustic context of Portugal are presented. Also, the issues and the high bureaucracy for the identification and collection of property data is also discussed. The objective of the work is to develop a low-cost solution to solve the problems of registration and identification of properties. For this, it was opted for the development of a mobile application, since the devices currently present technologies such as GPS and Camera, that if compared with specific equipment, present a great difference of cost. In addition, the paper also proposes a business model that aims to ensure the commercial viability of the solution. For the development of the solution, it was decided to use current technologies such as Ionic and Apache Cordova that aim at friendly user experience and also enable cross-platform. In addition, it was also developed a web server and its communication between application and database. Finally, it is concluded that the work done in this dissertation proves the viability of creating a solution that fulfills the defined requirements. It presents a viable business model and presents a tool that can geographically demarcate in order to maintain a persistent and accurate record. Besides, it presents the results of the record in a simple way for different types of users.A propriedade privada apresenta grande importância na vida das pessoas em uma sociedade, desta forma torna-se importante conhecer as características e limitações que elas apresentam para garantir a organização e o respeito às leis. Com isso, são apresentadas as dificuldades e inconsistências no processo de cadastramento dos imóveis atualmente utilizados, principalmente no contexto rústico de Portugal. Além disso, as problemas e a alta burocracia para a identificação e coleta de dados de propriedade também são discutidas. O objetivo do trabalho é desenvolver uma solução de baixo custo para resolver os problemas de registro e identificação de propriedades. Para isso, optou-se pelo desenvolvimento de uma aplicação móvel, uma vez que os dispositivos atualmente apresentam tecnologias como GPS e Câmera, que se comparadas a equipamentos específicos, apresentam uma grande diferença de custo. Além disso, o trabalho também propõe um modelo de negócios que visa garantir a viabilidade comercial da solução. Para o desenvolvimento da solução, decidiu-se usar tecnologias atuais, como Ionic e Apache Cordova, que visam uma experiência agradável para o usuário e também permitem o desenvolvimento multiplataforma. Além disso, também foi desenvolvido um servidor web e sua comunicação entre aplicativo e banco de dados. Finalmente, conclui-se que o trabalho realizado nessa dissertação de mestrado prova a viabilidade de contrução de uma solução que cumpre os requisitos definidos, apresentando um modelo de negócio viável e uma ferramenta que pode demarcar uma propriedade geograficamente para manter um registro persistente e preciso. Além disso, a ferramenta apresenta os resultados do registro de maneira simples para diferentes tipos de usuários

Estudo sobre o uso de inoculante no cultivo de feijão em Curitibanos

Projeto acadêmico (graduação) - Universidade Federal de Santa Catarina. Campus Curitibanos. Ciências Rurais.Serão avaliadas as respostas do feijoeiro-comum (Phaseolus vulgaris L), a aplicação de inoculante e adubo nitrogenado, com e sem palhada de aveia. Para esse experimento será utilizado o delineamento em blocos ao acaso, com 3 repetições, compostos cada um por 7 tratamentos sendo um testemunha, a área utilizada será de 252m² disponibilizada pela UFSC, todos os processos serão acompanhados por professores, alunos e um técnico devidamente preparado, vários padrões de medidas serão utilizadas para a tomada de conclusões, tais como o número médio de vagens por planta, número médio de grãos por vagem, diâmetro médio dos grãos e o peso do grã

PRODUÇÃO DE TRITICALE FORRAGEIRO EM CULTIVO SOLTEIRO E CONSORCIADO COM AVEIAS

TCC (graduação)- Universidade Federal de Santa Catarina. Campus Curitibanos. Agronomia.O consórcio entre forrageiras visa aumentar o tempo de utilização das pastagens, a qualidade, quantidade e a uniformidade ao longo do maior período possível, sendo assim uma espécie não deve afetar negativamente a outra em termos de competição. Sabe-se que o consórcio mais utilizado na região sul é o de aveia preta (Avena strigosa Schreb) + azevém (Lolium multiflorum Lam.), porém a diversificação torna-se necessária, com isso estudos direcionados para atender a demanda de consórcio de forrageiras vem ganhando força no cenário nacional. Portanto o objetivo deste trabalho foi avaliar diferentes alternativas de consórcio e também a produção do triticale forrageiro na região do planalto Catarinense, o experimento foi realizado durante o período de junho a outubro de 2014 na Fazenda Experimental Agropecuária da UFSC Campus Curitibanos, avaliou-se o acúmulo de forragem e a produção de triticale manejado em diferentes consórcios com aveia e em cultivo solteiro, conforme os tratamentos Triticale + aveia Esmeralda (TE), Triticale + aveia Cabocla (TC) e Triticale Solteiro (TS) manejados na altura de 35 cm de entrada e 10 cm resíduo, simulando o pré e pós-pastejo. O delineamento experimental utilizado foi de blocos ao acaso, com três repetições em esquema fatorial 3x3. Foi utilizado o Triticale forrageiro Tpolo981 em cultivo solteiro e em consórcio com a cultivar de aveia preta IPR Cabocla e a cultivar de aveia branca IPR Esmeralda. Houve diferença na produção entre os consórcios e nas porcentagens dos componentes morfológicos no corte de simulação de pré e pós pastejo. A produção de forragem total nas parcelas foi de TC 8.029,90 kg de MS.ha-1, TE 6.548,40 kg de MS.ha-1 e TS 5.930,21 kg de MS.ha-1. No corte do resíduo a mesma tendência foi observada. O consórcio TC foi responsável pela maior taxa de acumulo diário (TAcT) e taxa de acúmulo de colmos (TAcC) que foi de 57 e 26,69 kg de MS.ha-1.dia-1 respectivamente, não houve diferença na taxa de acumulo de folhas (TAcF). Os consórcios apresentaram elevado potencial para produção forrageira possibilitando sua recomendação para uso na região de Curitibanos-SC.The consortium of forage aims to increase the usage time of the pastures, the quality, quantity and consistency over long as possible, making it a species should not adversely affect the other in terms of competition. It is known that the most commonly used consortium in the southern region is the black oat (Avena strigosa Schreb) plus ryegrass (Lolium multiflorum Lam.), But diversification becomes necessary, therefore targeted studies to meet the demand for forage consortium has been gaining momentum on the national scene. Therefore the aim of this study was to evaluate different consortium alternatives and also the production of forage triticale in Santa Catarina plateau region, the experiment was conducted during the period June to October 2014 at the Experimental Farm Agricultural UFSC Campus Curitibanos, we assessed the forage accumulation and triticale production handled in different consortia with oats and cropping, as the Triticale + oats Esmeralda (TE) treatments, Triticale + Cabocla oats (TC) and Triticale Single (TS) managed at the height of 35 cm entrance and 10 cm residue, simulating pre and post-grazing. The experimental design was a randomized block design with three replications in a factorial 3x3. We used the feed Triticale Tpolo981 in monocrop and intercropped with oat cultivar IPR Cabocla and oat cultivar IPR Esmeralda. Was no difference in production between the consortia and the percentages of the morphological components in the cutting of pre and post grazing simulation. The production of total forage in the plots was of TC 8029.90 kg of MS.ha-1, TE 6548.40 kg of MS.ha-1 and TS 5930.21 kg of MS.ha-1. In the analysis of the residue the same trend was observed. The TC consortium was responsible for the higher rate of daily accumulation (TAcT) and stems accumulation rate (TAcC) who was 57 and 26.69 kg of MS.ha-1.day-1 respectively, there was no difference in the rate of leaf accumulation (TAcF). Consortia showed high potential for forage production enabling its recommendation for use in Curitibanos-SC region

Performance-Sensitive Debt

This paper studies performance-sensitive debt (PSD), the class of debt obligations whose interest payments depend on some measure of the borrower’s performance. For example, step-up bonds compensate credit rating downgrades with higher interest rates, and reward credit rating upgrades with lower interest rates. In an endogenous default setting, we develop an algorithm to value PSD obligations allowing for general payment profiles, and obtain closed-form pricing formulas in important special cases, including step-up bonds. Moreover, we provide a criterion to compare different PSD obligations in terms of their efficiency. In particular, we find that step-up bonds lead to earlier default and lower the market value of the issuing firm’s equity, compared to fixed-coupon bonds of the same market value. Lastly, we analyze the implications of our results for the policy of credit-rating agencies

Performance-Sensitive Debt

This paper studies performance-sensitive debt (PSD), the class of debt obligations whose interest payments depend on some measure of the borrower’s performance. For example, step-up bonds compensate credit rating downgrades with higher interest rates, and reward credit rating upgrades with lower interest rates. In an endogenous default setting, we develop an algorithm to value PSD obligations allowing for general payment profiles, and obtain closed-form pricing formulas in important special cases, including step-up bonds. Moreover, we provide a criterion to compare different PSD obligations in terms of their efficiency. In particular, we find that step-up bonds lead to earlier default and lower the market value of the issuing firm’s equity, compared to fixed-coupon bonds of the same market value. Lastly, we analyze the implications of our results for the policy of credit-rating agencies

ECONOMICS OF HAPPINESS: A STUDY ON HAPPINESS INDICATORS IN UNIVERSITY PROFESSORS

The pursuit of happiness is a desire that everyone has in life. The behavioral economics can help to identify constraints to achieve the true happiness. This study made an attempt to identify some possible determinants to explain the happiness of university professors in higher education institutions in the city of Passo Fundo/RS. Data were collected through questionnaires and analyzed using multiple regression models in seven different groups, classified into happiness by sex; happiness by marital status; happiness by age; happiness and money; happiness, sports and health; happiness, friendship, love relationships and sex life; and happiness, creativity and organization. The results show that money is not one of the major constraints to achieve happiness in this analysis group, that love relationships significantly increase the happiness of this study group, once sexual relationships don’t represent happiness increasing. It was also found that emotional / mental health of the participants has significance to turn them happier as creative tasks and planning actions to the future to reach the dreams and goals demonstrate to increase the happiness of this sample of university teachers

Efecto de las condiciones de almacenamiento refrigerado sobre el estrés oxidativo en raquis de uva de mesa, cv. Red Globe

Indexación: Web of Science; ScieloTable grape (Vitis vinifera L.) quality includes the condition of both the berries and the rachis. In the present report, physiological parameters of Red Globe rachises from fully elongated inflorescences (RFEI) and from mature clusters were studied after storage at 0 or 20 °C for different durations. To understand changes in rachis physiology as a result of changes in temperature conditions and storage time, the activities of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) were measured. In addition, hydrogen peroxide content, membrane lipoperoxidation (TBARS), total phenolic compounds and antioxidant capacity (FRAP) were assayed. TBARS was higher in mature rachises than in RFEI. This parameter remained constant throughout storage, indicating a change presumably associated with ontogeny or senescence processes. Short-term storage (096 h) increased SOD, CAT and APX activities in RFEI, while in mature rachises, no changes were observed in enzyme activities or in hydrogen peroxide content. Longer cold storage (25 or 53 days at 0 °C) of mature rachises reduced CAT activity, but SOD and APX activities did not change under these conditions. At 0 h, the FRAP and total phenolic contents of mature rachises were three and 20 times higher than in immature rachises, respectively.La calidad de uva de mesa (Vitis vinifera L.) involucra tanto la condición de bayas y el raquis. En el presente trabajo, los parámetros fisiológicos de raquis de 'Red Globe' de inflorescencias completamente elongadas (RFEI) y de racimos maduros fueron estudiados después de almacenamientos por diferentes tiempos a 0 ó 20 °C. Para entender los cambios en la fisiología del raquis debido a variaciones de temperatura y condiciones de almacenamiento, se midieron las actividades de superoxido dismutasa (SOD), catalasa (CAT), ascorbato peroxidasa (APX). Además fueron analizados el contenido de peróxido de hidrógeno, lipoperoxidación de membranas (TBARS), compuestos fenólicos totales y capacidad antioxidante (FRAP). TBARS de los raquis maduros a la cosecha fue mayor que el de inflorescencias completamente elongadas (RFEI). Este parámetro permaneció constante a través del almacenamiento, indicando cambios presuntamente asociados a ontogenia o procesos de senescencia. Almacenamiento cortos (0-96h) incrementaron la actividad de SOD, CAT y APX en RFEI, sin embargo no se observaron cambios en la actividad de estas enzimas o contenido de peróxido de hidrogeno en raquis maduros. Almacenamiento refrigerado prolongado (25 ó 30 días 0 °C) de raquis maduros redujo la actividad de CAT, pero SOD y APX no mostraron cambios bajo estas condiciones. A 0 h el contenido de FRAP y fenólicos totales de raquis maduros fueron tres y 20 veces mayores que en raquis inmaduro respectivamente.http://ref.scielo.org/m3mg4