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Showing 11 to 20 of 21 (0.027 seconds)| 11 |
A Proposal For The Structure Of Production Drawings OfCal, Nazli Naz 01 August 2007 (has links) (PDF)
Documentation is an important aspect in the construction industry since there are many types and number of documents that have to be controlled for the success of a given project. In design/build projects, site technical groups of the contractor upgrade the tender drawings by preparing shop drawings to be sent to the consultant for checking purpose. Especially in large projects a great many shop drawings are produced, causing a need of a system to keep track of and to understand the status of the drawings. These all can be achieved with a proper documentation system to be used within the company.
The main aim of this study was to make a proposal for the structure of production drawings of &ldquo / design/build&rdquo / construction projects in computer environment to maintain control of the drawings in the construction sites while documenting them for project completion. This system should base on CADD Standards. In this, first, the architectural production drawings were identified. These were then arranged according to the model file-naming convention of the selected CADD Standard. Following, the main folders of the proposed documentation structure were created and, finally, the working principles of the structure were introduced. The system was applied to a real construction project for a period of two weeks and tested by usability evaluation.
The results of the usability evaluations revealed that the system provides advantages in terms of the control of shop drawings and documentation for project completion. Conversely, the system did not maintain ease of communication.
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Modelagem molecular aplicada à cosmetologia: planejamento de compostos antienvelhecimento / Molecular modeling applied to cosmetology: planning antiaging compoundsScotti, Luciana 05 December 2006 (has links)
Nesta pesquisa, calculou-se, por meio da modelagem molecular, parâmetros físico-químicos importantes à capacidade anti-radicalar de compostos fenólicos extraídos de plantas da flora nacional, Chimarrhis turbinata e Arrabidaea samydoides. As propriedades eletrônicas também podem ser analisadas por meio de superfícies representadas por legendas de cores no campo 3D. Mapa de potencial eletrostático, distribuição orbitalar de HOMO e de LUMO e densidade de spin foram superfícies avaliadas neste trabalho. Em adição, estudos de QSAR (Quantitative Structure-Activity Relationships), cálculos de descritores moleculares holísticos por meio dos programas DRAGON e VOLSURF, cálculos estatísticos incluindo algoritmo genético e PLS (Partial Least Squares), demonstraram a influência de determinadas características moleculares como fundamentais à atividade biológica. A pesquisa concluiu que o grupo farmacofórico favorável à atividade antioxidante é estrutura que apresenta predominantemente características hidrofílicas, grupos hidroxila como substituintes, características eletrônicas favoráveis à doação de elétron e à estabilização do radical fenóxi formado, além de reduzido comprometimento estérico. Consideramos que os métodos empregados no trabalho podem ser considerados como abordagem inovadora para a Ciência Cosmética, indicando potencial ação antioxidante, que poderá ser utilizada em formulações antienvelhecimento. / In this research, the calculated physico-chemical parameters, by molecular modelling, have been reported in the literature for supplying important information about the antiradicalar behavior of phenolic compounds, as the studied herein from Chimarrhis turbinata sp. and Arrabidaea samydoides sp. The electronic properties also can be analyzed by means of surfaces represented by legends of colors in the 3D field. Map of electrostatic potential, HOMO and LUMO distribution orbitalar and spin density have been used in this work. In addition, QSAR studies (Quantitative Structure-Activity Relationships), calculations of holistic molecular descriptors by softwares DRAGON and VOLSURF, statistical analysis including genetic algorithm and PLS (Partial Least Squares), demonstrate the influence of the molecular structure in the biological activity. Therefore, pharmacofor favorable to the antioxidant activity structure that presents predominantly characteristic hydrophilic, groups hydroxyl as substituintes, electronic characteristics favorable to the donation of electron and the stabilization of the radical formed, besides reduced inibition esteric. These recent methods can be considered as an innovative approach for Cosmetic Science toward antioxidant action that could be used in antiaging products.
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Estudos de identificação de possíveis alvos para nitro-compostos azometínicos ou oxadiazolínicos com atividade antifúngica e anti-T. cruzi / Identification studies of possible targets for azomethinic or oxadiazolinic nitrocompounds with antifungal and anti-T. cruzi activityIeda Yuriko Sonehara 17 December 2009 (has links)
Este trabalho teve como objetivo a realização de estudos de Relações Quantitativas Tridimensionais Estrutura-Atividade, QSAR 3D, com identificação de alvos potenciais para compostos 5-nitro-heterocíclicos com estruturas azometínica ou oxadiazolínica com bioatividade dual, antifúngica e anti-T. cruzi, visando à identificação de novos compostos que possam ser aproveitados como possíveis candidatos a fármaco ou como compostos-líderes para novos estudos de modificação molecular. Os compostos estudados pertencem a quatro séries intimamente relacionadas, a saber: Série AzoO: 5-nitro-2-furfurilideno benzidrazidas 4-substituídas; Série AzoS: 5-nitro-2-tiofilideno benzidrazidas 4-substituídas; Série OxaO: 3-acetil-oxadiazolina 2,5-furfurilideno benzidrazidas 4-substituídas e Série OxaS: 3-acetil-oxadiazolina 2,5-tiofilideno benzidrazidas 4-substituídas. A utilização de forma integrada de ferramentas pertencentes às áreas de química farmacêutica, quimioinformática e bioinformática permite a caracterização de cavidades catalíticas de proteínas e a identificação das propriedades físico-químicas consideradas essenciais para a interação adequada entre ligante e biomacromolécula-alvo. Por outro lado, permitem também a identificação de alvos a partir da comparação de estruturas químicas, com as propriedades físico-químicas associadas, entre ligantes conhecidos e possíveis alvos; este procedimento de comparação de perfis moleculares, conhecido como virtual profiling, parte do princípio de que moléculas semelhantes a ligantes conhecidos de proteínas têm o potencial de interagir com essa mesma proteína, onde o grau de semelhança é determinado não somente pela estrutura química, mas também pela distribuição de características físico-químicas. As ferramentas utilizadas em estudos in silico incluem também análise de descritores topológicos que permitem a caracterização de propriedades físico-químicas considerando sua distribuição espacial em relação à estrutura química de uma dada molécula. O uso destes descritores permite a determinação do grau de semelhança entre moléculas ou partes de moléculas (fragmentos moleculares), e encontra-se na base das metodologias de triagem e de caracterização de sítios catalíticos de proteínas. Dentro da proposta de trabalho foram realizados estudos envolvendo virtual profiling, análise de fragmentos moleculares com base em descritores físico-químicos capazes de caracterizar superfícies de proteínas e ligantes, caracterização de cavidade catalítica de possível alvo e docking dos compostos a alvos putativos. Foi também realizada a determinação de atividade antifúngica e análise de resultados de QSAR 3D, levando finalmente à construção de uma hipótese quanto ao possível alvo biológico para os compostos azometínicos e oxadiazolínicos. O procedimento de virtual profiling apontou como possíveis alvos as enzimas CYP19A (aromatase), CYP3A4, CYP3A5 e CYP3A7. Embora estas enzimas não estejam diretamente envolvidas com as atividades biológicas testadas para os compostos até o momento, existem estudos que demonstram a interação de compostos azólicos de ação antifúngica, cujo alvo é CYP51 (14α-desmetilase), também com CYP19A e CYP3A4. Em conjunto com a análise da caracterização das propriedades físico-químicas com uso de descritores topológicos e a própria dualidade da atividade biológica, concluiu-se que seria possível a interação dos compostos das séries estudadas com CYP51, sendo esta enzima alvo não somente de antifúngicos azólicos, como também de compostos com ação anti-T. cruzi. A caracterização da cavidade catalítica de CYP51, tanto em termos de descritores de propriedades físico-químicas como de características estereoquímicas, associada ao estudos de QSAR 3D, confirmaram a possibilidade de interação da série oxadiazolínica com a CYP51, em orientação semelhante à dos antifúngicos azólicos. A série azometínica, que apresenta a mesma atividade dual da série oxadiazolínica, embora com potências diferentes, não possui conformação adequada para a interação da forma proposta. Existem, no entanto, dados que indicam a possibilidade de interação de compostos no sítio catalítico da enzima de forma diferente em relação a compostos oxadiazolínicos e antifúngicos azólicos. / This study had as objective the study of Tridimensional Quantitative Structure-Activity Relationships, 3D QSAR, and the identification of potential targets for 5-nitro-heterocyclic compounds with azomethynic or oxadiazolynic structures presenting dual antifungal and anti-T. cruzi bioactivity, aiming the discovery of new compounds to be used as possible drug candidates or lead compounds. The studied compounds belong to four closely related series: AzoO series: 4-substituted 5-nitro-2-furfurylidene benzhydrazides; AzoS Series: 4-substituted 5-nitro-2-thiophylidene benzhydrazides; OxaO Series: 4-substituted 3-acetyl-oxadiazolyne 2,5-furfurylidene benzhydrazides; and OxaS Series: 4-substituted 3-acetyl-oxadiazolyne 2,5-thiophilydene benzhydrazides. The integrated use of tools belonging to the areas of medicinal chemistry, chemoinformatics, and bioinformatics allow for the characterization of catalytic cavities of proteins and the identification of physicochemical properties considered essential for the adequate interaction between ligand and target biomacromolecule. In addition to this, they also make possible the identification of targets through the comparison of chemical structures, with their associated physicochemical properties, of known ligands and their possible targets; this approach, known as virtual profiling, is based on the principle that molecules similar to known ligands of proteins can potentially interact with this same protein, with the similarity degree being determined not only by chemical structure but also through the distribution of physicochemical characteristics. The tools used in studies in silico also include the analysis of topological descriptors that can be used to analyse physicochemical characteristics considering their spacial distribution in relation to the chemical structure of a given molecule. The use of these descriptors makes possible the determination of the similarity degree between molecules or part of molecules (molecular fragments), and is the basis for methodologies of screening and characterization of the catalytic sites or proteins. Considering the proposed objective, studies were carried involving virtual profiling, analysis of molecular fragments based on physicochemical descriptors able to characterize the surface of ligands and proteins, characterization of the catalytic site of a possible target, and docking of the compounds to putative targets. The antifungal activity of compounds was determined and 3D QSAR results analysed, leading to the formulation of a hypothesis for the possible biological target for the azomethynic and oxadiazolynic compounds. Virtual profiling results pointed as possible targets the P450 enzymes CYP19A (aromatase), CYP3A4, CYP3A5, and CYP3A7. Although these enzymes are not directly involved with the currently tested biological activities for these compounds, there are studies reporting the interaction of azole antifungal compounds, whose target is CYP51 (14α-demethylase), with CYP19A and CYP3A4. Taken together with the analysis of physicochemical characteristics based on topological descriptors, and considering the duality of determined biological activities, it was concluded that the interaction of the studied compounds with CYP51 was possible since this enzyme is the target nor only for azole antifungals, but also for anti-T. cruzi compounds. Characterization studies of CYP51 catalytic cavity considering not only physicochemical properties descriptors but also stereochemical characteristics, associated to the results of 3D QSAR, confirmed the possibility of interaction of compounds from the oxadiazolynic series with CYP51, in an orientation similar to azole antifungals. The azomethynic series, that also presents the same dual biological activity though with different potency, does not present an adequate conformation for the ineraction proposed for the oxadiazolynic series; however, there are reports indicating the possibility of interaction of compounds in the catalytic site of the enzyme in a different way from that of antifungal azoles and the proposed interaction of oxadiazolynic compounds.
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Estudos de identificação de possíveis alvos para nitro-compostos azometínicos ou oxadiazolínicos com atividade antifúngica e anti-T. cruzi / Identification studies of possible targets for azomethinic or oxadiazolinic nitrocompounds with antifungal and anti-T. cruzi activitySonehara, Ieda Yuriko 17 December 2009 (has links)
Este trabalho teve como objetivo a realização de estudos de Relações Quantitativas Tridimensionais Estrutura-Atividade, QSAR 3D, com identificação de alvos potenciais para compostos 5-nitro-heterocíclicos com estruturas azometínica ou oxadiazolínica com bioatividade dual, antifúngica e anti-T. cruzi, visando à identificação de novos compostos que possam ser aproveitados como possíveis candidatos a fármaco ou como compostos-líderes para novos estudos de modificação molecular. Os compostos estudados pertencem a quatro séries intimamente relacionadas, a saber: Série AzoO: 5-nitro-2-furfurilideno benzidrazidas 4-substituídas; Série AzoS: 5-nitro-2-tiofilideno benzidrazidas 4-substituídas; Série OxaO: 3-acetil-oxadiazolina 2,5-furfurilideno benzidrazidas 4-substituídas e Série OxaS: 3-acetil-oxadiazolina 2,5-tiofilideno benzidrazidas 4-substituídas. A utilização de forma integrada de ferramentas pertencentes às áreas de química farmacêutica, quimioinformática e bioinformática permite a caracterização de cavidades catalíticas de proteínas e a identificação das propriedades físico-químicas consideradas essenciais para a interação adequada entre ligante e biomacromolécula-alvo. Por outro lado, permitem também a identificação de alvos a partir da comparação de estruturas químicas, com as propriedades físico-químicas associadas, entre ligantes conhecidos e possíveis alvos; este procedimento de comparação de perfis moleculares, conhecido como virtual profiling, parte do princípio de que moléculas semelhantes a ligantes conhecidos de proteínas têm o potencial de interagir com essa mesma proteína, onde o grau de semelhança é determinado não somente pela estrutura química, mas também pela distribuição de características físico-químicas. As ferramentas utilizadas em estudos in silico incluem também análise de descritores topológicos que permitem a caracterização de propriedades físico-químicas considerando sua distribuição espacial em relação à estrutura química de uma dada molécula. O uso destes descritores permite a determinação do grau de semelhança entre moléculas ou partes de moléculas (fragmentos moleculares), e encontra-se na base das metodologias de triagem e de caracterização de sítios catalíticos de proteínas. Dentro da proposta de trabalho foram realizados estudos envolvendo virtual profiling, análise de fragmentos moleculares com base em descritores físico-químicos capazes de caracterizar superfícies de proteínas e ligantes, caracterização de cavidade catalítica de possível alvo e docking dos compostos a alvos putativos. Foi também realizada a determinação de atividade antifúngica e análise de resultados de QSAR 3D, levando finalmente à construção de uma hipótese quanto ao possível alvo biológico para os compostos azometínicos e oxadiazolínicos. O procedimento de virtual profiling apontou como possíveis alvos as enzimas CYP19A (aromatase), CYP3A4, CYP3A5 e CYP3A7. Embora estas enzimas não estejam diretamente envolvidas com as atividades biológicas testadas para os compostos até o momento, existem estudos que demonstram a interação de compostos azólicos de ação antifúngica, cujo alvo é CYP51 (14α-desmetilase), também com CYP19A e CYP3A4. Em conjunto com a análise da caracterização das propriedades físico-químicas com uso de descritores topológicos e a própria dualidade da atividade biológica, concluiu-se que seria possível a interação dos compostos das séries estudadas com CYP51, sendo esta enzima alvo não somente de antifúngicos azólicos, como também de compostos com ação anti-T. cruzi. A caracterização da cavidade catalítica de CYP51, tanto em termos de descritores de propriedades físico-químicas como de características estereoquímicas, associada ao estudos de QSAR 3D, confirmaram a possibilidade de interação da série oxadiazolínica com a CYP51, em orientação semelhante à dos antifúngicos azólicos. A série azometínica, que apresenta a mesma atividade dual da série oxadiazolínica, embora com potências diferentes, não possui conformação adequada para a interação da forma proposta. Existem, no entanto, dados que indicam a possibilidade de interação de compostos no sítio catalítico da enzima de forma diferente em relação a compostos oxadiazolínicos e antifúngicos azólicos. / This study had as objective the study of Tridimensional Quantitative Structure-Activity Relationships, 3D QSAR, and the identification of potential targets for 5-nitro-heterocyclic compounds with azomethynic or oxadiazolynic structures presenting dual antifungal and anti-T. cruzi bioactivity, aiming the discovery of new compounds to be used as possible drug candidates or lead compounds. The studied compounds belong to four closely related series: AzoO series: 4-substituted 5-nitro-2-furfurylidene benzhydrazides; AzoS Series: 4-substituted 5-nitro-2-thiophylidene benzhydrazides; OxaO Series: 4-substituted 3-acetyl-oxadiazolyne 2,5-furfurylidene benzhydrazides; and OxaS Series: 4-substituted 3-acetyl-oxadiazolyne 2,5-thiophilydene benzhydrazides. The integrated use of tools belonging to the areas of medicinal chemistry, chemoinformatics, and bioinformatics allow for the characterization of catalytic cavities of proteins and the identification of physicochemical properties considered essential for the adequate interaction between ligand and target biomacromolecule. In addition to this, they also make possible the identification of targets through the comparison of chemical structures, with their associated physicochemical properties, of known ligands and their possible targets; this approach, known as virtual profiling, is based on the principle that molecules similar to known ligands of proteins can potentially interact with this same protein, with the similarity degree being determined not only by chemical structure but also through the distribution of physicochemical characteristics. The tools used in studies in silico also include the analysis of topological descriptors that can be used to analyse physicochemical characteristics considering their spacial distribution in relation to the chemical structure of a given molecule. The use of these descriptors makes possible the determination of the similarity degree between molecules or part of molecules (molecular fragments), and is the basis for methodologies of screening and characterization of the catalytic sites or proteins. Considering the proposed objective, studies were carried involving virtual profiling, analysis of molecular fragments based on physicochemical descriptors able to characterize the surface of ligands and proteins, characterization of the catalytic site of a possible target, and docking of the compounds to putative targets. The antifungal activity of compounds was determined and 3D QSAR results analysed, leading to the formulation of a hypothesis for the possible biological target for the azomethynic and oxadiazolynic compounds. Virtual profiling results pointed as possible targets the P450 enzymes CYP19A (aromatase), CYP3A4, CYP3A5, and CYP3A7. Although these enzymes are not directly involved with the currently tested biological activities for these compounds, there are studies reporting the interaction of azole antifungal compounds, whose target is CYP51 (14α-demethylase), with CYP19A and CYP3A4. Taken together with the analysis of physicochemical characteristics based on topological descriptors, and considering the duality of determined biological activities, it was concluded that the interaction of the studied compounds with CYP51 was possible since this enzyme is the target nor only for azole antifungals, but also for anti-T. cruzi compounds. Characterization studies of CYP51 catalytic cavity considering not only physicochemical properties descriptors but also stereochemical characteristics, associated to the results of 3D QSAR, confirmed the possibility of interaction of compounds from the oxadiazolynic series with CYP51, in an orientation similar to azole antifungals. The azomethynic series, that also presents the same dual biological activity though with different potency, does not present an adequate conformation for the ineraction proposed for the oxadiazolynic series; however, there are reports indicating the possibility of interaction of compounds in the catalytic site of the enzyme in a different way from that of antifungal azoles and the proposed interaction of oxadiazolynic compounds.
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Modelagem molecular aplicada à cosmetologia: planejamento de compostos antienvelhecimento / Molecular modeling applied to cosmetology: planning antiaging compoundsLuciana Scotti 05 December 2006 (has links)
Nesta pesquisa, calculou-se, por meio da modelagem molecular, parâmetros físico-químicos importantes à capacidade anti-radicalar de compostos fenólicos extraídos de plantas da flora nacional, Chimarrhis turbinata e Arrabidaea samydoides. As propriedades eletrônicas também podem ser analisadas por meio de superfícies representadas por legendas de cores no campo 3D. Mapa de potencial eletrostático, distribuição orbitalar de HOMO e de LUMO e densidade de spin foram superfícies avaliadas neste trabalho. Em adição, estudos de QSAR (Quantitative Structure-Activity Relationships), cálculos de descritores moleculares holísticos por meio dos programas DRAGON e VOLSURF, cálculos estatísticos incluindo algoritmo genético e PLS (Partial Least Squares), demonstraram a influência de determinadas características moleculares como fundamentais à atividade biológica. A pesquisa concluiu que o grupo farmacofórico favorável à atividade antioxidante é estrutura que apresenta predominantemente características hidrofílicas, grupos hidroxila como substituintes, características eletrônicas favoráveis à doação de elétron e à estabilização do radical fenóxi formado, além de reduzido comprometimento estérico. Consideramos que os métodos empregados no trabalho podem ser considerados como abordagem inovadora para a Ciência Cosmética, indicando potencial ação antioxidante, que poderá ser utilizada em formulações antienvelhecimento. / In this research, the calculated physico-chemical parameters, by molecular modelling, have been reported in the literature for supplying important information about the antiradicalar behavior of phenolic compounds, as the studied herein from Chimarrhis turbinata sp. and Arrabidaea samydoides sp. The electronic properties also can be analyzed by means of surfaces represented by legends of colors in the 3D field. Map of electrostatic potential, HOMO and LUMO distribution orbitalar and spin density have been used in this work. In addition, QSAR studies (Quantitative Structure-Activity Relationships), calculations of holistic molecular descriptors by softwares DRAGON and VOLSURF, statistical analysis including genetic algorithm and PLS (Partial Least Squares), demonstrate the influence of the molecular structure in the biological activity. Therefore, pharmacofor favorable to the antioxidant activity structure that presents predominantly characteristic hydrophilic, groups hydroxyl as substituintes, electronic characteristics favorable to the donation of electron and the stabilization of the radical formed, besides reduced inibition esteric. These recent methods can be considered as an innovative approach for Cosmetic Science toward antioxidant action that could be used in antiaging products.
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Computer Technologyin The Design ProcessMontague, Gregory 01 January 2010 (has links)
This is a study of computer technology's impact on the theatrical design process. The tools of communication provided by technology were studied, and an analysis was conducted in the classroom of Digital Rendering, Digital Rendering Videos, and 3d CADD. After-wards, these tools were applied to an actual production of West Side Story where, with the addition of 3d light simulation software, the tools were used to communicate the design ideas from the lighting designer to the director. The goal of this process was to provide a 'real to life' virtual representation of the show to the director with the least amount of confusion. An additional goal was to test the limits and functions of the software; trying to learn all the benefits that could be provided to the process of mounting a theatrical production.
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Modeling and Analysis of Ligand Docking to Norovirus Capsid Protein for the Computer-Aided Drug DesignCHHABRA, MONICA 28 August 2008 (has links)
No description available.
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BBT Side Mold AssyHemphill, Bill 07 June 2022 (has links)
This electronic document file set covers the design and fabrication information of the ETSU Guitar Building Project’s BBT (OM-sized) Side Mold Assy for use with the STEM Guitar Project’s standard acoustic guitar kit. The extended 'as built' data set contains an overview file and companion video, the 'parent' CADD drawing, CADD data for laser etching and cutting a drill &/or layout template, CADD drawings in AutoCAD .DWG and .DXF R12 formats of the centerline tool paths for creating the mold assembly pieces on an AXYZ CNC router, and support documentation for CAM applications including router bit specifications, feeds, speed, multi-pass data, and layer names (formatted for AXYZ's ToolPath CAM software).
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Development of high-performance algorithms for a new generation of versatile molecular descriptors. The Pentacle softwareDurán Alcaide, Ángel 04 March 2010 (has links)
The work of this thesis was focused on the development of high-performance algorithms for a new generation of molecular descriptors, with many advantages with respect to its predecessors, suitable for diverse applications in the field of drug design, as well as its implementation in commercial grade scientific software (Pentacle). As a first step, we developed a new algorithm (AMANDA) for discretizing molecular interaction fields which allows extracting from them the most interesting regions in an efficient way. This algorithm was incorporated into a new generation of alignmentindependent molecular descriptors, named GRIND-2. The computing speed and efficiency of the new algorithm allow the application of these descriptors in virtual screening. In addition, we developed a new alignment-independent encoding algorithm (CLACC) producing quantitative structure-activity relationship models which have better predictive ability and are easier to interpret than those obtained with other methods. / El trabajo que se presenta en esta tesis se ha centrado en el desarrollo de algoritmos de altas prestaciones para la obtención de una nueva generación de descriptores moleculares, con numerosas ventajas con respecto a sus predecesores, adecuados para diversas aplicaciones en el área del diseño de fármacos, y en su implementación en un programa científico de calidad comercial (Pentacle). Inicialmente se desarrolló un nuevo algoritmo de discretización de campos de interacción molecular (AMANDA) que permite extraer eficientemente las regiones de máximo interés. Este algoritmo fue incorporado en una nueva generación de descriptores moleculares independientes del alineamiento, denominados GRIND-2. La rapidez y eficiencia del nuevo algoritmo permitieron aplicar estos descriptores en cribados virtuales. Por último, se puso a punto un nuevo algoritmo de codificación independiente de alineamiento (CLACC) que permite obtener modelos cuantitativos de relación estructura-actividad con mejor capacidad predictiva y mucho más fáciles de interpretar que los obtenidos con otros métodos.
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BBT Acoustic Alternative Top Bracing CADD Data Set-NoRev-2022Jun28Hemphill, Bill 22 July 2022 (has links)
This electronic document file set consists of an overview presentation (PDF-formatted) file and companion video (MP4) and CADD files (DWG & DXF) for laser cutting the ETSU-developed alternate top bracing designs and marking templates for the STEM Guitar Project’s BBT (OM-sized) standard acoustic guitar kit. The three (3) alternative BBT top bracing designs in this release are (a) a one-piece base for the standard kit's (Martin-style) bracing, (b) 277 Ladder-style bracing, and (c) an X-braced fan-style bracing similar to traditional European or so-called 'classical' acoustic guitars.
The CADD data set for each of the three (3) top bracing designs includes (a) a nominal 24" x 18" x 3mm (0.118") Baltic birch plywood laser layout of (1) the one-piece base with slots, (2) pre-radiused and pre-scalloped vertical braces with tabs to ensure proper orientation and alignment, and (3) various gages and jigs and (b) a nominal 15" x 20" marking template.
The 'provided as is" CADD data is formatted for use on a Universal Laser Systems (ULS) laser cutter digital (CNC) device. Each CADD drawing is also provided in two (2) formats: Autodesk AutoCAD 2007 .DWG and .DXF R12. Users should modify and adapt the CADD data as required to fit their equipment. This CADD data set is released and distributed under a Creative Commons license; users are also encouraged to make changes o the data and share (with attribution) their designs with the worldwide acoustic guitar building community.
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