The Use of 3D Scanning and 5-Axis Machining in Design and Fabrication of Dental Bridge

2016 ◽  
Vol 834 ◽  
pp. 28-33 ◽  
Author(s):  
Ján Milde ◽  
Ladislav Morovič

Dental restorations are currently produced mainly by conventional dental technology methods. The automation of the manufacturing process can be achieved by the use of CAD/CAM technology. Basic research on the most important aspects of CAD/CAM fixed dental restorations from the viewpoint of production, information technology, and dentistry/dental technology are the subject of a current article. The aim of this article is practical using of computer aided technologies such as 3D scanning and 5-axis machining for designing and fabrication of dental restorations. It further explains the detailed process of acquiring a digital description of tooth’s shape and its subsequent modification. Attention is drawn to a detailed analysis of dental restorations’ design obtained from a digital description of a tooth in Cercon Art software. The last part of this paper concentrates on the fabrication of dental restorations, which took place at CAD/CAM dental centre in Bratislava, Slovakia. The fabrication was accomplished by 5-axis kinematic structure of machine tools.

Author(s):  
Rodrigo Azocar González

RESUMENEl presente artículo es fruto de una investigación de largo alcance que busca generar discusión en torno a los desafíos contemporáneos del Trabajo Social en la construcción de alternativas de intervención social en contextos de diversidad sexual en Chile. La crisis de la norma heterosexual refleja una contemporaneidad marcada por la visibilidad de los grupos históricamente excluidos, reflejo de la sensibilización y cuestionamiento de una masculinidad dominante intrínsecamente exclusora e inalcanzable, como también de procesos de posicionamiento político y cultural de un colectivo presente, pero hasta hace poco invisibilizado, en nuestro país. A través de técnicas etnográficas y la incorporación del concepto de mercado como vehículo de visibilidad, el trabajo propone ideas coherentes con la construcción de una praxis transdisciplinar que responde a la nueva definición de Trabajo Social, en discusión a nivel mundial, como de los procesos de cuestionamiento y mudanza ciudadanos revitalizados en la última década.Palabras clave: Intervención social, diversidad sexual, trabajo social, desafíos. Diversidade sexual e intervenção social: reflexões a partir do Trabalho SocialRESUMOO presente artigo é o resultado de uma pesquisa de longo alcance que procura gerar discussão em relação aos desafios contemporâneos do Trabalho Social na construção de alternativas de intervenção social em contextos de diversidade sexual no Chile. A crise da norma heterossexual reflete uma contemporaneidade marcada pela visibilidade dos grupos historicamente excluídos, reflexo da conscientização e questionamento de uma masculinidade dominante intrinsecamente que exclui e que se apresenta como inatingível, bem como processos de posicionamento político e cultural de um coletivo presente, mas até recentemente invisível em nosso país. Através de técnicas etnográficas e incorporação do conceito de mercado como veículo de visibilidade, o trabalho propõe ideias coerentes com a construçãode uma prática transdisciplinar que respondam à nova definição de TrabalhoSocial, discutido mundialmente, como dos processos de questionamento emudança cidadã revitalizados na última década.Palavras-chave: intervenção social, diversidade sexual, trabalho social,desafios. Sexual diversity and social intervention: Reflections fromsocial workABSTRACTThe current article is the result of a wider research that seeks to generatediscussion about the actual challenges of social work in the constructionof alternatives of social intervention on sexual diversity contexts in Chile.The crisis of the heterosexual regulation reflects a contemporaneity markedby the visibility of the historically excluded groups, as a reflection of thesensitivity and questioning of a dominant manhood inherently excluder andunreachable, as political and positioning processes of a current group, butuntil recently hidden in our country. Through ethnographic technics and theincorporation of the concept of market as a vehicle of visibility, this worksproposes ideas coherent with the construction of a cross-curricular praxisthat responds to the new definition of social work, globally discussed, as wellas the questioning processes and citizen movements during last decade.Keywords: Social intervention, sexual diversity, social work, challenges


Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4213
Author(s):  
Dariusz Fuksa

The subject of the article is a new method that I have developed for calculating a multi-asset break-even for multi-assortment production, extended by a percentage threshold and a current sales ratio (which was missing in previously published methods). The percentage threshold provides unambiguous information about the economic health of a company. As a result, it became possible to use it in practice to evaluate the activities of economic entities (mines) and to perform modelling and optimisation of production plans based on different variants of customer demand scenarios. The publication addresses the complexity of the problem of determining the break-even in multi-assortment production. Moreover, it discusses the practical limitations of previous methods and demonstrates the usefulness of the proposed method on the example of hard coal mines.


KronoScope ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 7-27
Author(s):  
Carl Humphries

Abstract “Being is said in many ways,” claimed Aristotle, initiating a discussion about existential commitment that continues today. Might there not be reasons to say something similar about “having been,” or “having happened,” where these expressions denote something’s being located in the past? Moreover, if history – construed not only as an object of inquiry (actual events, etc.) but also as a way of casting light on certain matters – is primarily concerned with “things past,” then the question just posed also seems relevant to the question of what historical understanding amounts to. While the idea that ‘being’ may mean different things in different contexts has indisputable importance, the implications of other, past-temporal expressions are elusive. In what might any differences of substantive meaning encountered there consist? One starting point for responding – the one that provides the subject matter explored here – is furnished by the question of whether or not a certain way of addressing matters relating to the past permits or precludes forms of intelligibility that could be said to be ‘radically historical.’ After arguing that the existing options for addressing this issue remain unsatisfactory, I set out an alternative view of what it could mean to endorse or reject such an idea. This involves drawing distinctions and analogies connected with notions of temporal situatedness, human practicality and historicality, which are then linked to a further contrast between two ways of understanding the referential significance of what is involved when we self-ascribe a relation to a current situation in a manner construable as implying that we take ourselves to occupy a unique, yet circumstantially defined, perspective on that situation. As regards the latter, on one reading, the specific kind of indexically referring language we use – commonly labelled “de se” – is something whose rationale is exhausted by its practical utility as a communicative tool. On the other, it is viewed as capturing something of substantive importance about how we can be thought of as standing in relation to reality. I claim that this second reading, together with the line of thinking about self-identification and self-reference it helps foreground, can shed light on what it would mean to affirm or deny the possibility of radically historical forms of intelligibility – and thus also on what it could mean to ascribe a plurality of meanings to talk concerning things being ‘in the past.’


2018 ◽  
Vol 8 (3) ◽  
pp. 151 ◽  
Author(s):  
AMM Ullah ◽  
Khalifa Harib

This article addresses the issue of educating engineering students with the knowledge and skills of Computer-Aided Design and Manufacturing (CAD/CAM). In particular, three carefully designed tutorials—cutting tool offsetting, tool-path generation for freeform surfaces, and the integration of advanced machine tools (e.g., hexapod-based machine tools) with solid modeling—are described. The tutorials help students gain an in-depth understanding of how the CAD/CAM-relevant hardware devices and software packages work in real-life settings. At the same time, the tutorials help students achieve the following educational outcomes: (1) an ability to apply the knowledge of mathematics, science, and engineering; (2) an ability to design a system, component, or process to meet the desired needs, (3) an ability to identify, formulate, and solve engineering problems; and (4) an ability to use the techniques, skills, and modern engineering tools that are necessary for engineering practice. The tutorials can be modified for incorporating other contemporary issues (e.g., additive manufacturing, reverse engineering, and sustainable manufacturing), which can be delved into as a natural extension of this study.


2017 ◽  
Vol 10 (3) ◽  
pp. 1
Author(s):  
Khalil Sardarnia ◽  
Yalda Bahrampour

With the expansion of Islamism, a wave of Islam phobia was launched by western Orientalists and intensified subsequent to September 11 Attacks. Theoretically, the subject of adaptation and compatibility or contrast between Islam and democracy has drawn the attention of academic circles. Using a comparative and analytical research procedure, the current article seeks to provide an answer to this question: In the area of Adaptation and Contrast Theories, what is the nature of the relationship between Islam and democracy? The research’s hypothesis is that: from Contrast perspective, adaptation between democracy and Islam is not possible due to ontological and epistemological differences. In contrast, given the existing rational and democratic potentials within the framework of genuine Islamic fundamentals, democratic empirical examples such as democratic attitudes and demands in Islam world and democratic governance in the Middle East countries and Islam world, adaptation oriented parties believe in the existence of contextualized democracy within the framework of Islam. Using a critical reappraisal, it must be noted that, in spite of some deficits, Adaptation is more tenable, while Contrast and Essentialism are not sufficiently tenable due to some causes including failure to make a distinction between Islam’s basic fundamentals and history of Islam, the performance of authoritarian regimes and radical Islamists, universalization of liberal-secular democracy discourse and its combination with western ethnic chauvinism and propaganda of Islam phobia and defamation to Islam.


2019 ◽  
Vol 42 (1) ◽  
pp. 197-204
Author(s):  
Małgorzata Turczyk

SummaryThe article is preconceptual in its nature, as it is an introduction to a planned research project in the area of pedagogy and law. The author describes the research in current trends in modern childhood studies, choosing the protection of children’s rights in the event of their parents’ separation as the basic research category. This category will be analyzed in ontological, epistemological and methodological dimensions. In view of the growing scale of family breakdowns, it becomes justified to ask a question about the way of experiencing, understanding and constructing knowledge about the subject of pedagogical and legal interactions – the child themself. Building knowledge about a child whose parents separate is not only intended to expand and build interdisciplinary theoretical knowledge, but also to provide a basis for designing adequate tools and activities to protect the rights of a child experiencing their parents’ separation. This article provides an outline of a research concept aimed at protecting children’s rights. The article contains extensive justifications for the research topic and the framework of the methodological concept.


polemica ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Mariana Rodrigues Sapateiro ◽  
Lucas Koltun Sanvesso ◽  
Rafael Bianchi Silva

Resumo: Este artigo é um relato de experiência de um grupo de discussão online com o tema “Gênero e Docência”, fruto de uma intervenção de estágio do curso de Psicologia, no contexto da pandemia do Covid-19, no Brasil. A reflexão se volta para a questão do esvaziamento do grupo. Para tanto, discutem-se temas como os desafios de se estabelecer diálogo; a formação de vínculos e a constituição de grupo; a lógica produtivista de formação, no contexto atual; e as dificuldades do trabalho com grupo, em ambiente online. A partir desses norteadores, constatou-se que não houve consolidação efetiva de um grupo de trabalho. Mesmo assim, entende-se que as hipóteses levantadas para compreender o fenômeno do esvaziamento do grupo podem contribuir com futuros estudos acerca da temática, já que este tipo de modalidade se tornou um fenômeno atual que demanda melhor compreensão para a pesquisa, no campo das ciências humanas.Palavras-chave: Grupo online. Gênero. Docência. Pandemia. Abstract: This article is an experience report of an online discussion group with the theme “Gender and Teaching”, the result of an internship intervention form the Psychology degree, in the context of the Covid-19 pandemic in Brazil. The reflection turns to the discussion on the emptying of the group. For it, topics such as the challenges of establishing dialogue, the formation of bonds and the constitution of a group, the productive logic in academic formation in the current context and the difficulties of working with groups in an online environment are discussed. Based on these guidelines, it is stated that there was no effective consolidation of a work group. Even so, it is understood that the hypotheses raised to understand the phenomenon of group emptying can contribute to future studies on the subject, as this type of modality is a current phenomenon that demands better understanding for research in the field of human sciences.Keywords: Online group. Gender. Teaching. Pandemic. 


2016 ◽  
Vol 24 (5) ◽  
pp. 72-99 ◽  
Author(s):  
F.E. Vasilyuk

The task of constitutionalization of Christian psychology as a specific discipline pre- sumes methodological enumeration of its population: scientific, educational and practice-oriented projects. Current article presents a tryout of a tool, that allows to to- pographically link each project to certain coordinates on a map of Christian psychology subject field. Analyses revealed uncommon qualities of such a map. The main of these qualities is a topological plasticity, a capacity to adaptively change the metric of zones and fields in order to insert specific project unaltered. Such a procedure allows to describe an individual “methodological profile” of a project. The technology of analyses tested in current work opens up an opportunity for methodological arrange- ment of the subject-thematical field of Christian psychology, which is a necessary condition for its constitutionalization and entering a “critical” phase of its development.


2018 ◽  
Vol 28 (2) ◽  
pp. e587-e594 ◽  
Author(s):  
Arthur Furtado de Mendonca ◽  
Mahdi Shahmoradi ◽  
Cresus Vinicius Depes de Gouvêa ◽  
Grace M. De Souza ◽  
Ayman Ellakwa

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