Demonstration of how the zeta function method for effective potential removes the divergences

The calculation of the minimum of the effective potential using the zeta function method is extremely advantagous, because the zeta function is regular at $s=0$ and we gain immediately a finite result for the effective potential without the necessity of subtratction of any pole or the addition of infinite counter-terms. The purpose of this paper is to explicitly point out how the cancellation of the divergences occurs and that the zeta function method implicitly uses the same procedure used by Bollini-Giambiagi and Salam-Strathdee in order to gain finite part of functions with a simple pole.Comment: 9 page

Is Seniority-Based Pay Used as a Motivation Device? Evidence from Plant Level Data

In this paper we use data from industrial plants to investigate if seniority-based pay is used asa motivational device for production workers. Alternatively, seniority-based pay could simplybe a wage setting rule not necessarily related to the provision of incentives. Unlike previouspapers, we use a direct measure of seniority-based pay as well as measures of monitoringdevices and piece-rates. We find that firms that offer seniority-based pay are less likely tooffer explicit incentives. They are also less likely to invest in monitoring devices. We alsofind that firms that offer seniority-based pay are more likely to engage in other humanresource management policies that result in long employment relationships. Overall theseresults suggest that seniority-based pay is indeed used as a motivation device.Human resource management practices, incentives, monitoring

Studies of the co-ordination chemistry of guanidines with transition metals

This work involves the characterisation of reaction products of transition metals from the 1st, 2nd and 3rd rows of the Periodic Table with guanidines and their lithiated derivatives. Physical methods such as infrared spectroscopy, (^1)H, (^13)C and (^19)F nuclear magnetic resonance spectroscopy, microanalysis, and conductivity measurements have been used to characterise the materials. The transition metal compounds used in this work can be divided into two groups: (i) metal carbonyls and (ii) metal halides. The metal carbonyls group consists of [M(CO)(_5)L] (M = Mn, L = Br; M = Cr, Mo, W, L = CO), [Mo(Cl)L(CO)(_3)] (L = Ƞ-C(_5)H(_5)) and [MoL(CO)(_3)][BF(_4)] (L = Ƞ-C(_7)H(_7) ), and the metal halide group consists of MCl(_2) (M = Pd, Pt), MLCl(_2) (M = Pd and L = C(_8)H(_12)), K(_2)MCl(_4) (M = Pd, Pt) and WCl(_4). Studies have involved two substituted guanidines, 1,2,3-triphenylguanidine and syn-1,2- diphenylguanidine and the Uthiated derivative of 1,2,3-triphenylguanidine.The reactions were undertaken using a variety of conditions. The type of solvent, temperature and molar ratio are important parameters, particularly for the complexes of manganese. Similar conditions were explored for the complexes of palladium, platinum, chromium, molybdenum, tungsten and arylmolybdenum derivatives. Carbonyl complexes of the type [Mn(Br)(CO)(_3)L(_2)] (L = 1,2,3- triphenylguanidine), [Mn(Br)(CO)(_4)L] (L = 1,2,3-triphenylguanidine), [Mo(Ƞ-C(_5)H(_5))L(CO)(_2)] (L = 1,2,3-triphenylguanidino) and complexes of the type [M2CI4L2] (M = Pd, Pt; L = 1,2,3-triphenylguanidine, 1,2-diphenylguanidine), [Pt(_2)Cl(_4)L(_3)] (L = syn-1,2-diphenylguanidine), [Pt(_2)Cl(_4)L(_2)L'] (L = syn-1,2-diphenylguanidine, L' = N,N'-diphenylurea), [Pt(_2)Cl(_2)L(_2)L'(_2)] (L = syn-l,2-diphenylguanidino, L(^1) = syn-l,2- diphenylguanidine ), [PtCl(_2)L] (L = HNC(Me)NHC(Me)NH) and [PdCl(_2)(C(_8)H(_12))L] (L = 1,2,3-triphenylguanidine, syn-1,2-diphenylguanidine), were isolated. A product containing BF(_3) was isolated, and the bonding of the BF(_3) studied. The guanidine ligand adopts various bonding modes towards transition metals, and studies have been directed towards determining the mode adopted in each of the new complexes synthesised. Guanidines are found to act as strong o- bonding ligands, having consequences on the remaining ligands. Comparison is made throughout with the related amidine ligands. Mechanisms of reactions, consistent with experimental data, are discussed throughout the thesis

On the influence of metastable states and the behavior of the EEDF in the characterization of the negative glow of a N2-Ar discharge by OES

Optical emission spectroscopy (OES) is an essential diagnostic technique in many plasma systems, such as those used for surface treatments or fabrication of thin films. Despite the simplicity of application of OES, its interpretation is not straightforward. In particular, it requires the use of models, which due to the complexity and variety of discharge conditions, have not yet been fully understood [1]–[3]. In addition, Langmuir probes have been widely used to characterize plasmas. They allow the measurement of several parameters of interest, such as the electron density and temperature, as well as the determination of the electron energy distribution function (EEDF) by numerical derivation of the characteristic V − I [4] or by probe-current modulation [5]. In this work, some second positive system bands in the negative glow of an Ar-N2 plasma at a pressure of 2.5 Torr were investigated both by OES and Langmuir probes, for different mixture concentrations. The main purpose of this study was to verify how metastable states and the behavior of the EEDF may influence the interpretation of OES dataFil: Isola, Lucio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: López, Maia Melina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Gomez, Bernardo Jose Armando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Guerra, Vasco. Instituto Superior Tecnico; Portuga

Leishmania infection and host-blood feeding preferences of phlebotomine sandflies and canine leishmaniasis in an endemic European area, the Algarve Region in Portugal

The Algarve Region (AR) in southern Portugal, which is an international tourist destination, has been considered an endemic region of zoonotic leishmaniasis caused by Leishmania infantum since the 1980s. In the present study, phlebotomine and canine surveys were conducted to identify sandfly blood meal sources and to update the occurrence of Leishmania infection in vectors and dogs. Four sandfly species were captured: Phlebotomus perniciosus, Phlebotomus ariasi, Phlebotomus sergenti and Sergentomyia minuta. In one P. perniciosus female, L. infantum DNA was detected. Blood meal tests showed that this species had no host preferences and was an opportunistic feeder. An overall canine leishmaniasis (CanL) seroprevalence of 16.06% was found; the seroprevalence was 3.88% in dogs housed in kennels and 40.63% in dogs that attended veterinary clinics. The simultaneous occurrence of dogs and P. perniciosus infected with L. infantum in the AR indicates that the region continues to be an endemic area for CanL. Our results reinforce the need for the systematic spatial distribution of phlebotomine populations and their Leishmania infection rates and the need to simultaneously perform pathogen monitoring in both invertebrate and vertebrate hosts to investigate the transmission, distribution and spreading of Leishmania infection.EU/FEDER/FCT [POCI/CVT/56357/2004]; EU [FP7-261504 EDENext (091)]; FCT fellowship [SFRH/BPD/44082/2008]info:eu-repo/semantics/publishedVersio

TIPOLOGIA MUNICIPAL DE CLASSES SÓCIO-OCUPACIONAIS: UMA NOVA DIMENSÃO PARA ANÁLISE DAS DESIGUALDADES TERRITORIAIS NO BRASIL

O objetivo principal deste trabalho é propor uma nova configuração para o território brasileiro, fornecendo uma relevante dimensão para análise das desigualdades sociais brasileiras. A hipótese central é que a estrutura social, uma conjugação entre inserção no mercado de trabalho (classe ocupacional) e faixa de renda per capita (estrato social) das famílias brasileiras, é capaz de identificar padrões sociais que cumprem papel essencial nas análises sobre as condições de vida da população. Para cumprir tal objetivo, este trabalho foi estruturado em três partes principais: i) descrição da metodologia de estratificação social; ii) identificação dos grupos de municípios relativamente homogêneos de desenvolvimento da estrutura social (perfis sociais) e análise espacial desta configuração; iii) análise das desigualdades territoriais brasileiras utilizando o perfil social como variável de controle.---------------------------------------------The main purpose of this work is to propose a new configuration of Brazilian territory, providing a relevant dimension to the analysis of Brazilian social inequalities. The central hypothesis is that the social structure, which consists of a combination between job market (socio-occupational class) and per capita income band (socioeconomic segment) of Brazilian families, is capable of identifying social patterns which has an essential role in analysis of the life conditions of population. To reach such purpose, this work is structured in tree mains divisions: i) a description of the social stratification methodology; ii) identifying groups of relative homogeneity of social structure development (socials profiles) and spatial analysis of this configuration; iii) analysis of Brazilian territory inequalities using the social profile as control variable.estratificação social, renda - distribuição, disparidades regionais, social stratification, income distribution, regional disparities, Community/Rural/Urban Development, J82, R12, R23,

Tipologia municipal de classes sociocupacionais: uma nova dimensão para análise das desigualdades territoriais no Brasil

The main purpose of this work is to propose a new configuration for the Brazilian territory, providing a relevant dimension to analyze Brazilian social inequalities. The central hypothesis is that the social structure, which consists of a combination between labor market position (occupational class) and per capita income level (social stratum) of Brazilian families, is able to identify social patterns which play an import role in analyzing the huge inequalities of living condition in Brazil.social stratification, income distribution, regional disparities, Agricultural Finance, Public Economics, J82, R12, R23.,

Sistema de gestão integrada : qualidade, saude e segurança e meio ambiente

Orientador: Ademir Jose PetenateDissertação (mestrado profissional) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação CientificaResumo: Este trabalho propõe uma metodologia de gestão empresarial que tem por objetivo satisfazer ao mesmo tempo e de forma integrada os requisitos de qualidade do produto, meio ambiente e segurança e saúde no trabalho. Para desenvolvimento deste modelo foram comparadas as normas internacionalmente aplicadas na certificação dos sistemas isolados: Sistema de Gestão Pela Qualidade (ISO 9000), Sistema de Gestão Ambiental (1S014000) e Sistema de Gestão de Segurança e Saúde Ocupacional (BS8800). O modelo proposto, denominado de Sistema de Gestão Integrada, foi implantado na Cia. Cimento Portland ltaú, inicialmente na área de mineração da fábrica de Itaú de Minas, e posteriormente estendido às demais áreas e fábricasAbstract: This work presents methodology to integrate the requirements of the quality, health and safety and enviromental systems into only one system of management. In order to develop this model, the standarts of Quality System (ISO 9000), Health and Safety System (BS 8800), and Enviromental System (ISO 14000) were analised and compared to design the Integrated Management System. The designed model was flfSt1y stablished in the raw material cell of ltaú de Minas cement plant, a unit of the Cia. Cimento Portland Itaú. Afterwards, this system was extended to the whole companyMestradoMestre em Qualidad

ÍNDICE DE INVESTIMENTO EM QUALIDADE AMBIENTAL DOS ESTADOS BRASILEIROS: UMA APLICAÇÃO DO METODO DE ANÁLISE FATORIAL

Este trabalho objetivou construir o Índice de Investimento na Qualidade Ambiental (IIQA) para os Estados Brasileiros, utilizando a metodologia de análise fatorial através do método de componentes principais. Os resultados apontaram que os Estados das regiões Sul e Sudeste apresentam os maiores índices de investimentos na qualidade ambiental, com destaque para o Estado de São Paulo. A região centro-oeste demonstrou índices intermediários, porém nesta região está localizado o 2° maior índice de investimento em qualidade do meio ambiente que pertence ao Distrito Federal. Em contrapartida os Estados das regiões Nordeste e Norte possuem os piores índices, sendo os Estados de Amapá e Rondônia, os que menos investem na melhoria da qualidade ambiental.-------------------------------This work objectified to construct the Index of Investment in ambient quality (IIAQ) for the Brazilian States, using the methodology of factorial analysis through the method of main components. The results had pointed that the States of the regions South and Southeastern present the biggest index of investments in the ambient quality, with prominence with respect to the State of São Paulo. The region center-west demonstrated intermediate indices, however in this region bigger index of investment in quality of the environment is located 2° that belongs to the Distrito Federal. On the other hand the States of the Northeast region and North possess the worse indices, being the States of Amapá and Rondônia, the ones that less they invest in the improvement of the ambient quality.qualidade ambiental, estatística multivariada, análise fatorial, estados brasileiros, ambient quality, multivaried statistics, factorial analysis, Brazilian states, Environmental Economics and Policy,