This thesis examines the establishment and development of the worship of the emperor and his family members in the Latin West, tracing specifically the cult of those who were officially deified at Rome and received the title of divus or diva. It seeks to answer three questions: 1. Does uniformity of cult practices and priestly titles increase or decrease over time 2. What prompted change in cult practice (reflected in priestly titles) and how was this change managed? 3. What factors influenced the choices made by communities throughout the Latin West concerning these cults? It addresses these questions through a number of specific case studies. It begins with a study of how the practice of deification (consecratio) was established and how it developed within the city of Rome. It then examines priestly titles associated with the cult of the divi/divae in three groups of provinces: the Gauls, the Spains, and the provinces of North Africa. Finally, it discusses the spread of the worship of the divi/divae throughout the empire by examining the Augustales (and other variations on this title) and the priests responsible for overseeing cult to individual divi/divae. The evidence discussed is primarily epigraphical but is supplemented with numismatic, archaeological and literary evidence where it is available. This thesis addresses a number of hypotheses concerning Rome’s role in the development of cult in the Latin West, principally, that cult was imposed on communities in the provinces by the centre, that the establishment of cult was based on a series of models and adopted in similar ways throughout the provinces, and that the coloniae were responsible for bringing Roman culture and religion to the peregrine communities. It argues that even though some provincial cults were established through direct intervention from members of the imperial family, it was still up to the communities themselves to oversee cult practice and finance the cult. In the case of civic cult, there is little to no evidence of involvement from the centre. Civic cult was established by local initiative and did not originate in the coloniae and spread to other communities. Instead, it tended to arise in peregrine communities (and municipia) from the earliest development of this cult (as well as some coloniae) as individual communities sought to forge a connection with the imperial family and find their place within, and in connection to, the Roman Empire.

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Thesis (DTh)--Stellenbosch University, 2002 / ENGLISH ABSTRACT: This dissertation examines the relationship of ontology and soteriology - the classic problem of nature and grace. Paul Tillich and Arnold van Ruler have been chosen as the best representatives of the classical tradition of the reformation. It is seen that although there is a significant formal difference between the theologies of these two theologians, there is a material identity. The combination of these two perspectives, Tillich's philosophical theology with Van Ruler's more traditional Calvinistic theology, helps to shed more light on the subject. The first subject to be considered is the ontological background for understanding reality as a whole. This is discussed as the trinitarian-predestinarian-eschatological framework of ontology. Everything finds its possibility in the trinitarian being of God, its reality in the eternal decrees and its purpose in the eschatological will of God. Creation has become (morally, not ontologically) separated from God in the fall and therefore salvation is needed. Christology is a function of soteriology and is to be understood in terms of substitution. This salvation, gained in Christ, is expressed in us by the outpoured Holy Spirit according to the eschatological will of God. Pneumatology is to be related to, and distinguished from christology. We are not replaced by the Spirit, but taken into a relationship with God. This is to be understood in terms of the struggle of the Spirit with the flesh. The presence of the Spirit is kerygmatic, paradoxical, anticipatory and miraculous. There is an ambiguous and fragmentary realization of salvation in the Spirit. Proto logically and eschatologically there is an identity between culture (i.e. creation and history) and the kingdom of God. But in time and space there is a duality (not a dualism). This finds expression in the duality of church and state. The state is the kernel of culture and the church is the representative of the kingdom. The state is essentially the servant of God, and insofar as it orders life it is serving God. But it is separated from God and needs the church to call it back to its proper function. Where there is the duality of church and state in a nation, there is a theocratic situation. This leads to the Bible. That is a state where the Word is proclaimed and the state, because of its essential relationship to God, can understand this proclamation. In a theocracy there is a partial union of creation and salvation. Theocracy is a Spiritual reality. It is kerygmatic and paradoxical. It is not an ideal or an ethical system imposed on life. It has a conservative character as it stands in opposition to the demonic. As the document of God's struggle with the religious nationalism oflsrael, the Old Testament provides the paradigm for a theocracy. In this sense a christianized state is an incidental repetition - mutatis mutandis - of the nation ofIsrael. Eschatologically, the particularity of salvation is completely done away with. The incarnation and the outpouring are undone. Then there is only the triune God and the naked existence of creation. / AFRIKAANSE OPSOMMING: In hierdie proefskrif word ondersoek ingestel na die relasie tussen ontologie en soteriologie (respektiewelik: natuur en genade) met behulp van Paul Tillich en Arnold van Ruler as verteenwoordigers van die klassieke Reformatoriese tradisie. Dit blyk dat ten spyte van fonnele verskille tussen die teologiee van hierdie twee teolce, daar materieel groot ooreenstemming bestaan. 'n Kombinasie van Tillich se filosofiese teologie met Van Ruler se meer tradisioneel Calvinistiese benadering, werk verhelderend ten opsigte van die betrokke problematiek. Eers word die ontologiese agtergrond van die werklikheid as sodanig ondersoek. Dit word bestempel as die trinitaries-predestiaans-eskatologiese raamwerk van die ontologie. Die moontlikheid van alle bestaan rus in die trinitariese wese, die werklikheid daarvan in die ewige raad, en die doel daarvan in die eskatologiese wil van God. Die skepping het as gevolg van die val (moreel, nie ontologies nie) verwyder geraak van God en gevolglik is redding noodsaaklik. Christologie is 'n funksie van soteriologie en moet verstaan word in terme van plaasbekleding. Hierdie heil wat Christus bewerk het, kom tot gestalte in ons deur die uitstorting van die Heilige Gees in ooreenstemming met die eskatologiese wil van God. Pneumatologie staan in relasie tot christologie, maar moet terselfdertyd onderskei word van laasgenoemde. Ons word nie deur die Gees vervang nie, maar opgeneem in 'n verhouding met God. Dit moet verstaan word in terme van die stryd van die Gees teen die vlees. Die teenwoordigheid van die Gees is kerugmaties, paradoksaal, antisiperend en wonderbaar. Daar is 'n dubbelsinnige en fragmentariese realisering van die heil in die Gees. Hoewel protologies en eskatologies 'n identiteit bestaan tussen kultuur (d w s skepping en geskiedenis) en die koninkryk van God, vorm dit binne ruimte en tyd 'n dualiteit (nie dualisme nie). Dit kom tot uitdrukking in die dualiteit van kerk en staat. Die staat is die kern van die kultuur en die kerk die verteenwoordiger van die koninkryk. In wese is die staat die dienskneg van God en in soverre dit die lewe orden, staan dit in diens van God. Dit is egter vervreem van God en het die kerk nodig om dit terug te roep tot sy eintlike funksie. Waar daar 'n dualiteit bestaan van kerk en staat in 'n nasie, vind ons 'n teokratiese situasie. Dit is 'n staat met die Bybel, waar die Woord verkondig word en die staat a g v sy wesenlike verbouding tot God, die verkondiging kan verstaan. 'n Teokrasie is 'n Geestelike realiteit waarin daar reeds 'n gedeeltelike vereniging van skepping en heil plaasvind. Dit is kerugmaties en paradoksaal. Dit is nie 'n ideaal of 'n etiese sisteem wat die lewe opgele word nie. Dit het 'n konserverende karakter wat staan in opposisie tot die demoniese. Synde die dokument van God se worsteling met die religieuse nasionalisme van Israel, bied die Ou Testament die paradigma vir 'n teokrasie. In hierdie sin is die gekerstende staat 'n insidentele herhaling - mutatis mutandis - van Israel as nasie. Eskatologies verdwyn die besonderheid van die verlossing. Die inkamasie en die uitstorting van die Gees word ongedaan gemaak. Dan is daar aileen maar die drie-enige God en die naakte eksistensie.

The subject of the thesis is to analyse the image of the Merovingian ruler in hagiographical sources concentrating on the period from the accession of Chlotar II. to the Frankish thrones in 613 until the fall of the dynasty in 751. While based on the texts, its task is to evaluate the nature of the Merovingian power, which underwent a process of Christianization by Church after baptism of Clovis I. The analysis reveals to what extent the inherited patristic ideas about political power were applied, and at the same time it comments on the issue of pagan and Christian sacrality. The study also deals with the relationship between royal power and ecclesiastical institutions in terms of administrative and spiritual, while referring to its important role in the change of dynasties. Key words: image of the ruler, hagiographical texts, Merovingians, pagan sacrality, Christian sacrality, cult of saints

Le transfert d'énergie par résonance de type Förster (FRET) est un transfert d'énergie non radiatif d'un donneur à un accepteur à proximité. En raison de sa dépendance de la distance extrêmement sensible entre env. 1 et 20 nm, FRET joue un rôle important dans la nanobiotechnologie. Ainsi FRET peut être utilisé comme système de transduction du signal, mais aussi pour l'estimation de la distance entre le donneur et l'accepteur.Les accepteurs de FRET utilisés dans ce travail étaient des nanocristaux semi-conducteurs (quantum dots, QD). Ce type de luminophore est bien connu pour ses propriétés photophysiques supérieures. Leur absorption forte et spectralement large, et leur photoluminescence (PL) brillante et spectralement fine et de l'accordabilité spectrale de la PL sont idéalement adaptés aux applications de FRET. La combinaison des QDs comme accepteurs de FRET avec des complexes luminescents de terbium (CLT) comme donneurs permet des grandes distances de FRET (> 10 nm). La distance de FRET est caractéristique d'une paire FRET et décrit la distance à laquelle l'efficacité de FRET est égale à 50%. CLT sont idéal comme donneurs de FRET parce qu'ils fournissent des longues durées de vie des états excités à l'ordre de la milliseconde. Cette longue période de décroissance de PL permet de mesurer en temps décalé pour une répression d’autofluorescence et la PL des QDs directement excités, ce qui augmente fortement la sensibilité de détection. Les bandes d'émission de PL structurés de CLT et la PL accordable de QDs sont idéales pour l'application dans le diagnostic multiplexé.La thèse se compose de deux parties. Dans la première le couple FRET CLT-QD a été utilisé dans des immunodosages de FRET homogènes pour la détection de marqueurs biologiques antigène prostatique spécifique (TPSA), énolase specifique des neurones (NSE), antigène carcino-embryonnaire (CEA), et le récepteur du facteur de croissance épidermique (EGFR). La sensibilité du dosage immunologique a été optimisé en utilisant des différents types d'anticorps IgG, F (ab')2, F (ab), et pour EGFR un anticorps de chaîne lourde unique. Des limites de détection picomolaires étaient réalisées en utilisant des échantillons de sérum de petit volume et des mesures sur des lecteurs de microplaques cliniques. Une étude détaillée des différents systèmes de FRET en utilisant la spectroscopie résolue en temps a été réalisée pour étudier l'influence des différents anticorps sur la distance, la fonctionnalité, et la sensibilité des immunodosages. L'étude a été complétée par la mesure de NSE et CEA dans un format duplexé et des échantillons réels de patients.Dans la deuxième partie le FRET pour des mesures de distance nanométriques (réglette moléculaire ou spectroscopique) étaient étudiés. FRET en résolution temporelle a permis de calculer la distance entre le donneur et l’accepteur. Par conséquent, deux stratégies de liaisons différentes ont été étudiées pour établir une proximité entre le CLT et le QD : la reconnaissance biotine-streptavidine et l’auto-assemblage médié par polyhistidine. Une étude en résolution temporelle détaillée a été effectuée avec des QDs de différentes tailles, formes et revêtements de surface combiné avec des CLT liés à trois différentes biomolécules. L'analyse des courbes de décroissance multiexponentielle des donneurs et accepteurs permettait à obtenir des informations sur la taille, la forme et la biofonctionnalité des bioconjugués CLT-QD. Les résultats étaient en accord avec d'autres méthodes d'analyse de structure, telles que la microscopie électronique à transmission (MET) ou la diffusion de lumière dynamique (DLS), mais avec l'avantage d'une mesure homogène à la résolution 3-dimensionelle (impossible pour le MET), sans l'inclusion d'une couche d'hydratation (l’inconvénient de DLS) et en faible concentration dans le même environnement que celui utilisé pour l'application biologique. / Förster resonance energy transfer (FRET) is a non-radiative energy transfer from a donor to an acceptor in close proximity. Due to its extremely sensitive distance dependence in the 1 – 20 nm range, FRET plays an important role in nanobiotechnology. Thereby FRET can be used as signal transduction system but also for the distance estimation between donor and acceptor. The selected FRET acceptors in this work were semiconductor nanocrystals (quantum dots, QDs). This type of luminophore is well known for its superior photophysical properties. Their strong and broad absorption and their bright, narrow-band, and size-tunable photoluminescence (PL) emission make QDs ideally suited for FRET application. Combing QDs as FRET acceptors with luminescent terbium complexes (LTC) as FRET donors offers exceptionally large Förster distances of more than 10 nm. The Förster distance is characteristic of a FRET pair and is the distance at which the FRET efficiency equals 50 %. A large Förster distance is desirable as it offers the detection of biological interactions over large distances. LTC are suitable FRET donors for QDs because they provide long excited-state lifetimes in the millisecond range. This long PL decay time enables time-gated measurements for the suppression of autofluorescence and PL of directly excited QDs, which strongly increases the detection sensitivity. Additionally, the structured PL emission bands of LTCs together with the size-tunable PL emission bands of QDs make this FRET pair ideal for the application in multiplexed diagnostics, which is the measurement of multiple biomarkers in a single sample.The PhD thesis consists of two parts. In the first part the LTC-QD FRET pair was used within homogeneous FRET immunoassays for the detection of the biomarkers prostate specific antigen (TPSA), neuron-specific enolase (NSE), carcinoembryonic antigen (CEA), and epidermal growth factor receptor (EGFR). The immunoassay sensitivity was optimized using different types of antibodies IgG, F(ab’)2,F(ab), and for EGFR single heavy chain antibodies, which differ largely in their size. The use of small-volume serum samples and measurements on clinical as well customized fluorescence plate readers result in picomolar detection limits for all measured biomarkers. In addition to these QD-based in vitro diagnostic tests, a detailed study of the different FRET-systems using time-resolved spectroscopy was performed. The investigation revealed the influence of the different antibodies on distance, functionality, and sensitivity of the FRET immunoassays. The study was completed by the measurement of NSE and CEA in a duplexed format and real patient samples were investigated.The second part was to use FRET for nanometric distance measurements as molecular or spectroscopic ruler. Time-resolved FRET measurements enabled the calculation of the distance between donor and acceptor. Therefore two different binding strategies were investigated to establish a close proximity between the LTC-donor to the QD-acceptor, namely biotin-streptavidin recognition and polyhistidine mediated self-assembly. A detailed time-resolved study was performed of QDs with different sizes, shapes, and surface coatings in combination with LTC bound to three different host biomolecules, which also possessed different sizes, shapes, orientations, and binding conditions. The analysis of the multi-exponential decay curves of donor and acceptor allowed to obtain information about the size, shape, and biofunctionality of the investigated QD bioconjugates. The results were in agreement with other structural analysis methods, such as transmission electron microscopy (TEM) or dynamic light scattering (DLS), but with the advantage of a homogeneous measurement with three-dimensional resolution (not possible for TEM), without the inclusion of a hydration shell (drawback for DLS), and at low concentration in the same environment as used for the biological application.

Made available in DSpace on 2016-04-28T14:16:12Z (GMT). No. of bitstreams: 1 Magali Conceicao de Barros de Marchi.pdf: 2083221 bytes, checksum: 4cf0513b9fba9944184b6431a6af9410 (MD5) Previous issue date: 2011-05-13 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / This study has to focus on analysis of period-luminosity relationship for variable stars discovered by Henrietta Swan Leavitt in the early twentieth century. In it we present, through the analysis of documents published at that time, the path taken by Leavitt to find such a relationship as well as presenting the context in which research is embedded Leavitt. The relationship found by Leavitt had an important use in astronomy, since through it was possible to estimate the distance between stars and galaxies / Este estudo tem como foco de análise a relação período-luminosidade para estrelas variáveis encontrada por Henrietta Swan Leavitt no início do século XX. Nele buscamos apresentar, por meio da análise de documentos publicados naquela época, o caminho percorrido por Leavitt para encontrar a tal relação, bem como apresentar o contexto em que a investigação Leavitt está inserida. A relação encontrada por Leavitt teve importante uso na Astronomia, visto que por meio dela era possível estimar a distância entre estrelas e galáxias

Orientador: Prof. Dr. Sinuê Dayan Barbero Lodovici / Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Mestrado Profissional em Matemática em Rede Nacional, 2016. / Geometry is present in many of our contemporary activities, which allows us to search for more contextualized teaching strategies in order to make the learning process more meaningful to the student. Folding square papers to create origami, seems, to some extent, something simple, seeing that since our childhood, we play folding paper, making boats, balloons or even aircrafts. However, much more than just folding randomly, Origami is based on basic geometry and without realizing it, we work with angles, planes, lines and points, enabling several ways to work with Geometry with this technique inside the classroom, in a playful and interesting way, arising the students¿ curiosity. Thus this thesis aims to present a proposal to approach in a more playful way the fundamental knowledge of Euclidean Geometry through Origami. In this work we broach two of the three classic and insolvable problems of Euclidean geometry using the ruler and the ideal compass, showing some possible elementary frames with only these two instruments. We also mention the constructability of certain numbers using the ruler and the ideal compass. Finally, we discourse about the Japanese technique of Origami, the axioms that substantiate its geometry as well as demonstrate the resolution for two of these insolvable problems: the angle trisection and the duplication of a cube. / A Geometria faz-se presente em várias de nossas atividades contemporâneas, o que nos permite buscar estratégias de ensino mais contextualizadas, de maneira que a aprendizagem seja mais significativa ao aluno. Fazer dobraduras em papel parece, até certo ponto, algo simples, visto que, desde a nossa infância brincamos com a dobradura em papel, seja fazendo barcos, balões ou aviões. Porém, muito além do ato de apenas dobrar de maneira qualquer, o Origami é fundamentado em conhecimentos básicos da Geometria e sem percebermos, trabalhamos com ângulos, planos, retas e pontos, possibilitando diversas formas de se trabalhar a Geometria com esta técnica em sala de aula, de maneira lúdica e interessante, despertando a curiosidade do aluno. Desta forma, esta dissertação busca apresentar uma proposta para abordar de maneira mais lúdica os conhecimentos fundamentais da Geometria Euclidiana através do Origami. Neste presente trabalho abordamos sobre dois dos três problemas clássicos e insolúveis da Geometria Euclidiana utilizando a régua e o compasso ideais, abordando algumas construções elementares possíveis com apenas esses dois intrumentos. Abordamos também sobre a construtibilidade de determinados números utilizando a régua e o compasso ideais. Por fim, discorremos sobre a técnica japonesa do Origami, os axiomas que fundamentam sua geometria, bem como a demonstração da resolução de dois desses problemas insolúveis: a trissecção do ângulo e a duplicação do cubo.

Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-01-27T14:46:39Z No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertação - Emerson José da Silva - 2014.pdf: 7690015 bytes, checksum: 913769b0dd5913e4688da0ec1491b760 (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-01-28T12:58:40Z (GMT) No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertação - Emerson José da Silva - 2014.pdf: 7690015 bytes, checksum: 913769b0dd5913e4688da0ec1491b760 (MD5) / Made available in DSpace on 2015-01-28T12:58:40Z (GMT). No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertação - Emerson José da Silva - 2014.pdf: 7690015 bytes, checksum: 913769b0dd5913e4688da0ec1491b760 (MD5) Previous issue date: 2014-08-21 / In this work we revisit the subject Geometric Constructions into ruler and compass, using the dynamic geometry software 'Ruler and Compass' as an auxiliary tool in the teaching and learning of geometry, building examples and suggestions for activities with the software. Brought to the fore the possibility of building into ruler and compass, solutions to several problems that can be presented as algebraic expressions. Yet addressed the possibility of constructing a number, using only ruler and compass and discuss the famous and historical problems of geometrical construction: doubling the cube, squaring the circle and the trisection of the angle. We add appendices which present other possible constructions and also bring suggestions for activities with ruler and compass software. Keywords / Neste trabalho revisitamos o assunto Construções Geométricas via régua e compasso, utilizando o software de Geometria Dinâmica ‘Régua e Compasso’ como uma ferramenta auxiliar no ensino e aprendizagem de Geometria, construindo exemplos e sugestões de atividades com o software. Trouxemos à tona a possibilidade da construção, via régua e compasso, de soluções para vários problemas que podem ser apresentados por expressões algébricas. Abordamos ainda a possibilidade da construção de um número, utilizando-se apenas a régua e o compasso e discutimos os célebres e históricos problemas de construção geométrica: duplicação do cubo, quadratura do círculo e trissecção do ângulo. Acrescemos ainda apêndices onde apresentamos outros tipos de construções possíveis e também trazemos sugestões de atividades com o software ‘Régua e Compasso’.

[pt] Esta pesquisa buscou analisar o chamado de Jesus ao rico notável, conforme o relato do Evangelho segundo Lucas, e perceber em que medida tal convite não se destina somente ao personagem em questão, mas pode ser estendido a todos aqueles que se aproximem de Jesus reconhecendo nele o caminho para a vida eterna. Concluiu-se que o núcleo do chamado não é o cumprimento dos mandamentos e nem mesmo a distribuição dos bens aos pobres, mas o seguimento de Jesus. Como decorrência, esta adesão a Cristo se traduz na acolhida da vida eterna como graça, e não conquista pessoal; além disso, aquele que acolhe tal chamado é incorporado à Igreja, à comunidade dos seguidores de Jesus. Em oposição à frustrante hesitação do rico notável, outros casos de vocação e discipulado em Lc e At mostram como a acolhida do chamado de Jesus era possível, e seria fonte de alegria duradoura. A pesquisa combinou o método histórico-crítico com métodos de caráter sincrônico, como a análise retórica. / [en] This survey sought to analyze the call of Jesus to the rich young ruler, as narrated in the Gospel according to Luke, and realize to what extent such an invite is not destinated only to the character in case, but can be extended to all those who approach Jesus recognizing in him the path to eternal life. It was concluded that the center of the call is not the accomplishment of the Commandments, and not even the distribution of the goods to the poor, but the follow of Jesus. As a consequence, this adhesion to Christ signifies the reception of eternal life as grace, and not as self achievement; besides, the one who accepts such call is incorporated to the church, the community of Jesus followers. In opposition to the frustrating hesitation of the rich young ruler, other cases of vocation and discipleship in Luke and Acts show how the acceptance of the call of Jesus was possible, and would be a source of lasting joy. The survey combined the historical-critical method with synchronic character methods, such as the rhetorical analysis.

[pt] O objetivo deste trabalho é trazer à tona conceitos importantes da geometria no plano euclidiano sob o título de construções geométricas, cada vez mais esquecidos nos currículos escolares brasileiros. Nossa primeira ideia é mostrar a dificuldade que professores do ensino médio poderão encontrar ao tentar descobrir quais conceitos validam suas práticas já que os argumentos que validam a possibilidade ou a impossibilidade de algumas construções geométricas residem numa álgebra abstrata de difícil compreensão e domínio por parte dos professores, sobretudo aqueles que não cursaram disciplinas mais avançadas em matemática. Vamos comentar sobre os principais problemas da antiguidade que motivaram os matemáticos às descobertas de novas propriedades, apresentar tais construções geométricas e apresentar uma descrição algébrica das construções geométricas. A ideia é que através da álgebra abstrata podemos obter argumentos que validem a possibilidade e impossibilidade de tais construções e assim aumentar a cultura matemática do professor do ensino médio e não transformá-lo num expert no assunto. / [en] The main purpose of this work is to rescue the important concepts in geometric constructions. Concepts that are being progressively forgotten by Brazilian curriculums in schools. First, we want to present the difficulties that high school teachers might face when they will try to formalize concepts like the possibility or not to construct some figures in the Euclidean plane, especially those who have not studied advanced math courses at undergraduation. We comment on the main problems of antiquity that led mathematicians to new discoveries properties, we present geometric constructions as well as an algebraic description of these geometric constructions. The idea is that through abstract algebra we can present arguments about the possibility or impossibility of such constructions. In this work, we will comment that abstract algebra will help teachers to validate some arguments that involves the possibility or not to construct some figures as well as to enlarge high schools teachers culture, not trying to make them experts in the subject.