The invariator Design: An update

The invariator is a method to generate a test line within an isotropically oriented plane through a fixed point, in such a way that the test line is effectively motion invariant in three dimensional space. Generalizations exist for non Euclidean spaces. The invariator design is convenient to estimate surface area and volume simultaneously. In recent years a number of new results have appeared which call for an updated survey. We include two new estimators, namely the a posteriori weighting estimator for surface area and volume, and the peak-and-valley formula for surface area

New rotational integrals in space forms, with an application to surface area estimation

A surface area estimator for three-dimensional convex sets, based on the invariator principle of local stereology, has recently motivated its generalization by means of new rotational Crofton-type formulae using Morse theory. We follow a different route to obtain related formulae which are more manageable and valid for submanifolds in constant curvature spaces. As an application, we obtain a simplified version of the mentioned surface area estimator for non-convex sets of smooth boundary.Work was supported by the UJI project P11B2012-24 and the PROMETEOII/2014/062 project

Stereology with cylinder probes

Intersection formulae of Croton type for general geometric probes are well known in integral geometry. For the special case of cylinders with non necessarily convex direktrix, however, no equivalent formula seems to exist in the literature. We derive such formula resorting to motion invariant probability elements associated with test systems, instead of using a traditional approach. Because cylinders are seldom used as probes in stereological practice, however, this note is mainly of a theoretical nature

Attracted to feed, not to be fed upon – on the biology of Toxomerus basalis (Walker, 1836), the kleptoparasitic ‘sundew flower fly’ (Diptera: Syrphidae)

The complete life history of the kleptoparasitic ‘sundew flower fly’, Toxomerus basalis, is presented and illustrated. Adults of this species are photographed alive for the first time, including video recordings of larval and adult behaviour. Adult flies of both sexes visit Drosera (sundews) and show territorial behaviour around the plants, avoiding the dangerous sticky traps and demonstrating recognition of their larval host plant. Females lay eggs directly on non-sticky parts of the Drosera host plants, such as on the lower surface of the leaves and flower stalks, but apparently also on other plants growing in close proximity with the sundews.2018 fieldwork in Minas Gerais by AF and PMG was supported by travel funding from the project ‘SNSB-Innovativ 2018’ by the SNSB – Staatliche Naturwissenschaftliche Sammlungen Bayerns (Bavarian Natural History Collections, Germany) to AF. PMG thanks The Mohamed bin Zayed Species Conservation Fund for financial support for field work at Serra do Padre Ângelo (grant 192522325). Fieldwork was conducted under research permit granted by the Authorization and Information System in Biodiversity (SisBio), from the Chico Mendes Institute for Biodiversity Conservation (ICMBio) (#67026-1) to PMG

AVALIA??O DE DESEMPENHO FINANCEIRO ORGANIZACIONAL: UMA AN?LISE DE INDICADORES FINANCEIROS TRADICIONAIS SEGUNDO O MODELO FLEURIET

A administra??o do capital de giro encontra-se inserida no contexto decis?rio das finan?as empresariais devido a sua capacidade de promover melhor entendimento sobre como as organiza??es geram, aplicam e gerenciam seus recursos financeiros, tendo em vista o equil?brio ou a sustentabilidade do neg?cio. Nesse sentido, o presente estudo teve como objetivo avaliar o desempenho financeiro de uma empresa do ramo de perfumaria e cosm?ticos, em Jo?o Pessoa-PB, a partir dos seus indicadores de capital de giro e de uma an?lise econ?mico-financeira. Para tanto, foram utilizados os indicadores de endividamento, rentabilidade e liquidez, combinados ?s an?lises Horizontais e Verticais embasadas pelo modelo proposto por Fleuriet (2003). Assim, o trabalho se caracteriza como um estudo de caso, aplicado com abordagem qualitativa, e apoio da t?cnica documental de pesquisa para consulta de fontes externas sobre a tem?tica e documentos internos para levantamento dos dados financeiros reais. Com esse intuito, foram analisados os demonstrativos cont?beis, como DRE e Balan?o Patrimonial dos anos de 2011, 2012, 2013 e 2014. De modo geral, ao analisar os Capitais Circulantes com base no modelo de Fleuriet, nota-se que a empresa trabalha com certa folga financeira, possuindo uma situa??o s?lida. Por?m, ? necess?rio se aprofundar ainda mais para saber o porqu? do alto ?ndice de endividamento em curto prazo, tendo em vista o que foi analisado pelo pr?prio modelo aplicado

Integrative taxonomy of Iberian Merodon species (Diptera, Syrphidae)

The genus Merodon Meigen, 1803 (Syrphidae, Diptera), with more than 50 European species, is primarily distributed in the Mediterranean region, there being 34 species that occur in the Iberian Peninsula. The morphological variation found within some species from the Iberian Peninsula prompted us to test their taxonomic status by integrating morphological and molecular data. We generated partial sequences of the mitochondrial, protein-coding gene cytochrome c oxidase subunit I (COI), the nuclear, internal transcribed spacer (ITS2) region, and the D2 region of thenuclear 28S rRNA gene. COI and ITS2 sequences were obtained for most included taxa. The variability of the COI sequences showed great differences between the studied species groups, exhibiting an interspecific range from 0.29% to 12.5% between ingroup taxa. Closely related taxa of the aureus complex (e.g. M. quercetorum and M. legionensis) presented identical COI sequences. The obtained ITS2 sequences showed low intraspecific variability, and only a few taxa presented more than one genotype. Species status and delimitation were discussed for all taxa in the light of available morphological and molecular character information. Using the obtained sequence data for COI and 28S we inferred the phylogenetic relationships of the included taxa, using parsimony analysis. Separate analysis of the COI sequences identified four, quite well supportedclades within Merodon, the desuturinus, albifrons, nigritarsis and aureus groups. Combined analysis of the COI and 28S genes produced a topology similar to the COI topology.Ministry of Science and Environmental Protection of Serbia (Grant Number 143037), the Provincial Secretariat for Science and Technological Development (Maintenance of biodiversity–“Hot spots” on the Balkan and Iberian Peninsula), the Spanish Ministerio de Medio Ambiente (MMA-040/2002), the Spanish Ministerio de Educación y Ciencia (CGL2005-0713/BOS and grant number AP2003-3998) and Generalitat Valenciana (ACOMP06/063)

Comparison of Transcritical and Subcritical Heat Pump Systems for Domestic Hot Water Production in Energy Recovery Applications

Water-to-Water heat pump (WtWHP) is an efficient alternative to the current technologies used in Domestic Hot Water (DHW) production. However, this application is characterized by high secondary temperature lifts and irregular demands that define critically its design. In order to maximize the efficiency, transcritical cycles coupled to stratified storage tank has been the preferred solution. Nevertheless, recently subcritical cycles with a subcooling control system has been also considered also as a promising alternative because of the cost with the right desing the efficiencies could be in the range of transcritical system. The objective of this work is to compare the performance of both heat pump systems for DHW production in a heat recovery application where there is no restriction in the low temperature energy source availability. This situation could correspond to a source coming from sewage water or a system of low temperature district heating. The comparison has been made for the optimum configuration of both system which has implied the definition of the proper control strategy, proper sizing of the WtWHP and the tank and incorporation of a primary recovery heat exchanger in order to compare both systems in what is considered as the optimum working conditions. Results show that while both systems are able to operate with similar SCOPs, the CO2 system is more sensitive to water temperature lifts variations and temperature of the heat source than the propane WtWHP resulting in lower performances

Unidade de Ensino Potencialmente Significativa no ensino de Eletrodin?mica na Educa??o B?sica

A presente disserta??o e o seu produto oferecem ao professor de F?sica da Educa??o B?sica uma Unidade de Ensino Potencialmente Significativa (UEPS) com o intuito de tornar significativa a aprendizagem de conte?dos e conceitos relacionados ? Eletrodin?mica. Para tanto, faz-se necess?rio ousar-se no fazer pedag?gico, inserindo recursos did?ticos que oportunizem aos estudantes obter criticidade perante os conhecimentos inclusos em sua estrutura cognitiva. Partindo dessa premissa, esta pesquisa, de vi?s qualitativo, tem como objetivo investigar as percep??es e habilidades dos estudantes do Ensino M?dio por meio de uma Unidade de Ensino Potencialmente Significativa (UEPS) com apoio das simula??es computacionais (SC), para aprendizagem significativa dos conte?dos de eletrodin?mica, na disciplina de F?sica. A UEPS ocorreu seguindo os aspectos sequenciais de Moreira e foi aplicada em duas turmas do 3? ano do Ensino M?dio dos cursos T?cnicos Integrados em Inform?tica do Instituto Federal do Norte de Minas Gerais ? campus Salinas, representado por 54 estudantes. A interven??o pedag?gica procedeu-se ao desenvolvimento da UEPS compota das suas atividades - Sequ?ncias Did?ticas (SD) com aporte ferramental de Simula??es Computacionais, Kits de Experimentos com componentes eletr?nicos e v?deos tutoriais -, que se constitu?ram nos instrumentos de coleta de dados da pesquisa. O tratamento dos dados foi analisado ? luz dos referenciais te?ricos e revelaram que a UEPS tem potencialidades e se demonstrou cujo resultados obtidos por interm?dio da aplica??o da proposta, permitiram concluir que houve ind?cios de uma aprendizagem significativa. Como fruto desta pesquisa, apresenta-se a UEPS de Eletrodin?mica como produto educacional da pesquisa como Unidade de Ensino Potencialmente Significativa de apoio, oportunizando ao professor o acompanhamento do aprendizado dos estudantes.Disserta??o (Mestrado Profissional) ? Programa de P?s-gradua??o em Educa??o em Ci?ncias, Matem?tica e Tecnologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2022.This dissertation and its product offer the Basic Education Physics teacher a Potentially Significant Didactic Unit (UEPS) in order to make the learning of contents and concepts related to Electrodynamics meaningful. Therefore, it is necessary to dare in the pedagogical practice, inserting didactic resources that give students the opportunity to obtain criticality in the face of the knowledge included in their cognitive structure. Based on this premise, this qualitative research aims to investigate the perceptions and abilities of high school students through a Potentially Significant Teaching Unit (UEPS) with the support of computer simulations (CS), for the meaningful learning of the contents of electrodynamics, in the discipline of Physics. The UEPS was carried out following the sequential aspects of Moreira and was applied in two classes of the 3rd year of High School of the Integrated Technical courses in Computer Science of the Federal Institute of North Minas Gerais - Salinas campus, represented by 54 students. The pedagogical intervention proceeded to the development of the compote of UEPS activities - Didactic Sequences (SD) with the contribution of Computer Simulations tools, Experiment Kits with electronic components and tutorial v?deos, which constituted the data collection instruments for the investigation. The treatment of the data was analyzed in light of the theoretical references and revealed that the UEPS has potential and it was shown that the results obtained through the application of the proposal, allowed to conclude that there were signs of significant learning. As a result of this research, the UEPS of Electrodynamics is presented as an educational product of research as a Potentially Significant Didactic Support Unit, providing the teacher with the opportunity to monitor student learning

PORTFOLIO

Este trabalho consiste no portf?lio pessoal do aluno Bruno Henrique Raposo M?ximo. Tendo como objetivo principal reunir e compilar uma sele??o representativa de projetos de design gr?fico desenvolvidos pelo autor, apresentando as diferentes etapas de desenvolvimento de cada projeto utilizando as metodologias adaptadas de Maria Lu?sa Pe?n (2003) e Alina Wheeler (2019). O portf?lio inclui dez diferentes projetos, as ?reas de ilustra??o, design de personagem, identidade visual e branding. Cada projeto foi desenvolvido seguindo etapas das metodologias mencionadas, proporcionando uma vis?o abrangente de cada processo, desde a an?lise do problema at? o conceito final alcan?ado. A sele??o dos projetos considerou a ?rea de atua??o atual do autor, exemplificando a aplica??o do processo metodol?gico em diversos cen?rios e necessidades. Ao final do trabalho, o autor examina o contexto geral do Portf?lio, os aprendizados obtidos ao longo da sua trajet?ria acad?mica e profissional, assim como sua perspectiva em rela??o a projetos futuros