Bibliographies thématiques / Environmental geometry

Littérature scientifique sur le sujet « Environmental geometry »

Auteur : Grafiati
Publié le 11 mars 2023

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Articles de revues sur le sujet "Environmental geometry"

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Weiss, Gunter. « GEOMETRY. WHAT ELSE ! ? - MORE OF “ENVIRONMENTAL GEOMETRY” ». Boletim da Aproged, no 34 (décembre 2018) : 9–20. http://dx.doi.org/10.24840/2184-4933_2018-0034_0001.

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This paper is an addendum to a previous article [01] in which several examples demonstrate that “all natural or artificial objects have a shape or form resulting from a natural (bio-physical) or technical (design) process, and therefore have an intrinsic (immanent) geometric constituent”, focusing on the fact that “reality reveals geometry and geometry creates reality”. Since many objects are metaphors for geometric and mathematical content and the starting point for mathematical abstraction, one can conclude that geometry is simply everywhere. This sort of “Appendix” focuses on the symbiotic terms “grasping via senses” and “meaning” in connection with geometry and its visualisation and interpretation, from objects found in our usual environment. A real object that we see or recognize may even gain spiritual meaning, because it is extraordinary and rare and has, therefore, besides its somehow practical purpose, a symbolic one. Here, simplicity, symmetry, smoothness and regularity play an essential role beyond simple aesthetics. In our mainly secular culture, the aesthetic point of view stands in the foreground. KEYWORDS: elementary geometry, intuitive geometry, right angle, cross and square, proofs without words.
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Munn, Robert G. K., Caitlin S. Mallory, Kiah Hardcastle, Dane M. Chetkovich et Lisa M. Giocomo. « Entorhinal velocity signals reflect environmental geometry ». Nature Neuroscience 23, no 2 (13 janvier 2020) : 239–51. http://dx.doi.org/10.1038/s41593-019-0562-5.

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Schmidt, Thomas, et Eun Young Lee. « Spatial Memory Organized by Environmental Geometry ». Spatial Cognition & ; Computation 6, no 4 (décembre 2006) : 347–69. http://dx.doi.org/10.1207/s15427633scc0604_4.

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Miller, Noam Y., et Sara J. Shettleworth. « Learning about environmental geometry : An associative model. » Journal of Experimental Psychology : Animal Behavior Processes 33, no 3 (2007) : 191–212. http://dx.doi.org/10.1037/0097-7403.33.3.191.

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Wang, Yupeng, Hashem Akbari et Bo Chen. « Urban Geometry and Environmental Urban Policy Development ». Procedia Engineering 169 (2016) : 308–15. http://dx.doi.org/10.1016/j.proeng.2016.10.038.

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Kim, Hyun Jeong, et Minshik Cho. « On the Exploration and Problem Solving Related to Tangent Lines of Quadratic Curves via Dynamic Geometry ». Korean Association For Learner-Centered Curriculum And Instruction 23, no 1 (15 janvier 2023) : 573–93. http://dx.doi.org/10.22251/jlcci.2023.23.1.573.

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Objectives The purpose of this study is to explore methods of effective teaching the tangent line of quadratic curves in a dynamic geometric environment. Methods The exploratory software GeoGebra was used as a dynamic geometric environment, and the activity worksheets for exploring the geometric properties of the tangent line to quadratic curves were developed. The changes in students’ perspective of geometry appeared were examined and their influences were analyzed. Results The results show that the dynamic geometric environment is significant as a means for students to think geometrically by intuitive observation and explore the inherent properties of the tangent line to quadratic curves. Teaching from the perspective of geometry made students change their views that they need to memorize formulas and be familiar with the types of problems to learn quadratic curves. There is a positive response about changes in students understanding the problem situations and leading the solving process. Conclusions The result of this study provides some useful implications to geometry education that harmonize perspectives of analytic geometry and synthetic geometry.
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Krupic, Julija, Marius Bauza, Stephen Burton, Caswell Barry et John O’Keefe. « Grid cell symmetry is shaped by environmental geometry ». Nature 518, no 7538 (février 2015) : 232–35. http://dx.doi.org/10.1038/nature14153.

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Astuti, Reni, Yadi Ardiawan et Nurmaningsih Nurmaningsih. « PENGEMBANGAN MODUL PRAKTIKUM GEOMETRI DASAR BERBASIS WINDOWS GEOMETRY (WINGEOM) ». AKSIOMA : Jurnal Program Studi Pendidikan Matematika 10, no 4 (31 décembre 2021) : 2068. http://dx.doi.org/10.24127/ajpm.v10i4.3435.

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Mariyati, Yuni, et Intan Dwi Hastuti. « PENGEMBANGAN E-MODUL GEOMETRI BERBASIS BUDAYA SASAK SEBAGAI SUMBER BELAJAR DARING SISWA SEKOLAH DASAR ». Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan 13, no 2 (4 septembre 2022) : 175. http://dx.doi.org/10.31764/paedagoria.v13i2.9707.

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Abstrak: Tujuan penelitian secara umum adalah untuk mendapatkan e-modul Geometri Berbasis Budaya Sasak. Sedangkan tujuan khususnya untuk mengetahui Bagaimana kevalidan media tersebut digunakan sebagai Sumber Belajar Daring Siswa SD. Desain penelitian ini menggunakan Borg and Gall. Adapun bentuk data yang digunakan merupakan bentuk data kuantitatif yang dilakukan dengan lembar angket validasi. Hasil penelitian menunjukan bahwa: (1) e-modul yang dibuat berupa link berbentuk online mencangkup materi geometri khusus bangun datar persegi, persegi panjang dan segitiga dengan mengeksplorasi unsur geometri pada bangunan adat di desa sade Lombok Tengah (2) e-modul berbasis budaya sasak yang dikembangkan memperoleh data kevalidan dari validator ahli media dan materi, serta praktisi, dengan rata-rata nlai 94%, sehingga dapat disimpulkan bahwa e-modul geometri berbasis budaya sasak yang telah didikembangkan sudah valid dan dapat digunakan siswa sebagai sumber belajar daring.Abstract:The general objective of the research is to obtain an e-module on Geometry Based on Sasak Culture. While the specific purpose is to find out how the validity of the media is used as an online learning resource for elementary school students. This research design uses Borg and Gall. The form of data used is a form of quantitative data which is carried out with a validation questionnaire sheet. The results of the study show that: (1) the e-module made in the form of an online link includes special geometry material for square, rectangular and triangular shapes by exploring the elements of geometric in traditional buildings in the village of Sade, Central Lombok (2) e-modules based on Sasak culture The developed data obtained validity data from media and materials expert validators, as well as practitioners, with an average value of 94%, so it can be concluded that the Sasak culture-based geometry e-module that has been developed is valid and can be used by students as online learning resources.
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Bechelany, Mikhael, Sebastien Balme et Philippe Miele. « Atomic layer deposition of biobased nanostructured interfaces for energy, environmental and health applications ». Pure and Applied Chemistry 87, no 8 (1 août 2015) : 751–58. http://dx.doi.org/10.1515/pac-2015-0102.

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AbstractThe most fundamental phenomena in the immobilising of biomolecules on the nanostructured materials for energy, environmental and health applications are the control of interfaces between the nanostructures/nanopores and the immobilized biomaterials. Thus, the throughput of all those biobased nanostructured materials and devices can be improved or controlled by the enhanced geometric area of the nanostructured interfaces if an efficient immobilization of the biomolecules is warranted. In this respect, an accurate control of the geometry (size, porosity, etc.) and interfaces is primordial to finding the delicate balance between large/control interface areas and good immobilization conditions. Here, we will show how the atomic layer deposition (ALD) can be used as a tool for the creation of controlled nanostructured interfaces in which the geometry can be tuned accurately and the dependence of the physical-chemical properties on the geometric parameters can be studied systematically in order to immobilize biomolecules. We will show mainly examples of how these methods can be used to create single nanopores for mass spectroscopy and DNA sequencing, and membrane for gas separation and water treatment in which the performance varies with the nanostructure morphologies/interfaces and the immobilization conditions.
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Thèses sur le sujet "Environmental geometry"

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Yu, Xiaomeng. « Stochastic modeling of rock fracture geometry ». Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12176.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
Includes bibliographical references (second sequence, leaves 1-3).
by Xiaomeng Yu.
M.S.
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Lee, Jun-Suk. « Stochastic and topological fracture geometry model ». Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13598.

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Chatzipoulka, Christodouli. « Urban geometry and environmental performance in real urban forms ». Thesis, University of Kent, 2017. https://kar.kent.ac.uk/64332/.

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Solar radiation is energy, a natural and inexhaustible source of heat and light, and as such a major factor to be considered for enhancing urban environmental sustainability. Solar availability on buildings determines to a large degree their active and passive solar potential; whereas, the insolation of open spaces affects their microclimate and in turn, their use and liveability. Solar objectives are thus multiple and may also be conflicting in time and space, especially in temperate climates, where thermal comfort needs vary in seasons. The subject of the thesis is the relationship between urban geometry and environmental performance of urban forms, explored at the neighbourhood scale and in real urban areas. Specifically, the research investigates statistically casual relationships of urban geometry with environmental phenomena related, directly or indirectly, to the availability of solar radiation. Full consideration is given to the varying solar geometry as a major parameter affecting the interaction between urban geometry and solar radiation, lending it a temporal and geographical -related to latitude- character. The research subject is explored through three distinct studies, which share the same methodology investigating particular topics under the same thematic umbrella. The first and the third study, in the order of these being presented, investigate phenomena occurring in open spaces, namely insolation and thermal diversity; whereas, the second study examines solar availability in open spaces and on building façades. In the methodology, urban geometry is distinguished into built density, which is associated negatively with solar availability but positively with sustainability at the city-scale, and urban layout. The former expresses total built volume in a site, and the latter is represented by a set of quantified geometric parameters which characterise the way in which the built volume is allocated and distributed within the site. This distinction aims to provide evidence for the significance of urban layout in modifying the solar urban environment as well as addressing conflicting solar design objectives. The performance of the urban forms is examined through a series of performance indicators, namely sky view factor, insolation, solar irradiance and thermal diversity values. Both urban geometry variables and performance indicators are calculated on average in each urban form. The great size of the sample analysed allows their relationships to be investigated in statistical means. The research belongs to the new era of urban environmental studies which make use of digital 3D models of cities to study spatially expressed phenomena in the built environment. It is based entirely on the analysis of existing urban forms, of 500x500m area, found in two European cities, London and Paris. London constitutes the main case study city, whereas Paris is examined for comparison purposes. The two cities are located at similar geographical latitudes and within the same climatic context, but their urban fabrics exemplify very different geometries. The geometric and environmental analysis of the urban forms as well as the elaboration and processing of the output data are performed using computer-based tools and methods, such as MATLAB software and image processing techniques applied in urban digital elevation models (DEMs) and, SOLWEIG and the RADIANCE-based software, PPF, for SVF and solar simulations. The research findings contribute to the field of urban environmental studies and design at multiple levels, presenting a significant theoretical, practical, and methodological value. First, they produce a critical insight about the factors affecting the relationship of urban geometry and sun-related phenomena occurring in the urban environment and lending it a dynamic character. In addition, they provide solid evidence about the enormous potential of urban geometry for promoting multiple -and sometimes conflicting- solar and urban design objectives, informing the relevant on-going discourse. Third, having as case studies real forms in London and Paris, a part of the findings is interpreted into urban design guidelines for enhancing the environmental performance of new and existing areas in the two cities. Last, as the research employs new methods and techniques to explore diverse topics, some of which are relatively new in the literature, it constitutes an important, methodological precedent for future research works.
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Heckel, Ayse Y. « Spider web geometry inspires long span roof trusses ». Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127288.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, May, 2020
Cataloged from the official PDF of thesis.
Includes bibliographical references (pages 16-18).
This research explores the methods and results used to learn from spider web geometries and implement them into a practical long span roof truss structure. Specifically, utilizing data and properties of spider webs found in research from Su et al. (Su I. a., 2016). The research uses and implements spider's web design blueprints in present day structural systems. Initially, the size of long span roof truss is determined by the finding the gravity and lateral loads applied an ordinary building structure based on the current building code. Then, the web geometry of a Crytophora citricola's, or tent web spider's web is analyzed and optimized for structural efficiency under loading. The performance of this spider-inspired truss geometry is then compared to a typical truss seen in construction today. This research demonstrates that many web geometries are optimal, or close to it, and are comparable in structural efficiency to the trusses currently used in structures. Therefore, architects and structural engineers can use building code to design irregular spider web-shaped trusses in many instances, for example, in architecturally aesthetic purposes or in reusing old structural materials.
by Ayse Y. Heckel.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Civil and Environmental Engineering
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Wathugala, Deepa Nelumkanthi. « Stochastic three dimensional joint geometry : Modeling and verification ». Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185485.

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Eight 3D (three dimensional) rock joint geometry modeling schemes which investigate statistical homogeneity, and incorporate corrections for sampling biases and applications of stereology are presented. A procedure for verification of the developed models also is presented. In this study, shape of the joints was assumed as circular. The models provide the number of joint sets, and for each joint set, the intensity, orientation, spacing, location and diameter distributions. Miller's method (1983) with new interpretations (Kulatilake et al., 1990b) and equal area polar plots were used together to identify the largest statistically homogenous region around the ventilation drift, Stripa mine, data of which were used for both modeling and verification. Four joint sets were found in this region. A general vector approach to correct sampling bias on joint orientation is presented. Corrected data as well as raw data were subjected to chi-square goodness-of-fit tests to check the suitability of hemispherical normal and Bingham distributions in representing orientation of joint sets. Only raw data of joint set 4 followed Bingham distribution. Therefore, joint set orientations were best represented as empirical distributions. Two methods are presented for the modeling of joint spacing, linear intensity and location. In each method, spacing distributions of joint sets were best represented by exponential distributions. Then, joint intensity and location distributions are represented by Poisson and uniform distributions respectively. Correction of sampling bias on joint spacing also is presented. Joint size modeling was carried out using two methods: area sampling survey method and scanline sampling survey method. In these two methods, corrections of sampling biases associated with joint size modeling are presented. 3D joint sizes were inferred from 2D trace length measurements using geometrical probability and conditional probability concepts. In both methods diameter distributions are represented by gamma distributions. For verification, joints were generated in a volume according to the statistical models, using Monte-Carlo simulation. This volume was intersected by planes to obtain joint traces on exposures of size and shape similar to the ones used to obtain field data. Characteristics of these predicted joint traces were compared with the field data in a statistical sense. For the rock mass under this study, the modeling scheme 3 was found to be the most suitable scheme.
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He, Li-Xing. « A non-manifold geometry modeler : an object oriented approach ». Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/88810.

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Malek, Samar R. (Samar Rula). « The effect of geometry and topology on the mechanics of grid shells ». Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74425.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 128-131).
The use of grid shell structures in architecture and structural engineering has risen in the past decade, yet fundamental research on the mechanics of such structures is lacking. Grid shells are long span structures comprised of a lattice of single layer members forming a curved surface. Grid shells can be made of a wide range of materials from steel to wood. They have potential to be used in readapting existing spaces or in new aesthetically pleasing structures. By studying their mechanics, engineers can be more effective at the schematic phase of design so that the potential of grid shells can be maximized. This research conducts a parametric study that varies the topology and topography of grid shells. The parametric space is framed around real-world design constraints including the grid spacing, panel shape, span-to-height ratio and the use of double curvature. In this thesis, the buckling capacity is evaluated using finite element analysis for two typical grid shell geometries: the spherical cap and the corrugated vault. First, a spherical cap is considered for which an analytical solution exists and therefore the accuracy of the numerical procedure is validated. Simple closed-form solutions are derived using the concept of the equivalent continuum and compared to the numerical models. Then, the parametric study of the spherical cap is performed including variations of the grid spacing, the span to height ratio and the panel shape (triangles and quadrilaterals). Having determined the efficiency of the computational tool the study is extended to the barrel vault. Here the new features of the analysis are the use of double curvature by introducing corrugation along the edge and the crown. By understanding the fundamental mechanical behavior of grid shells, design guidelines aimed to maximize their capacity and efficiency and intended to facilitate the discussion between architect and engineer are proposed.
by Samar Rula Malek.
Ph.D.
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Parry, Scott R. « Free-Form Deformations in a Constructive Solid Geometry Modeling System ». BYU ScholarsArchive, 1986. https://scholarsarchive.byu.edu/etd/4255.

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No one will question that computers are revolutionizing the design industry. It is pointed out in [Bezier84] that before CAD/CAM, a surface was defined by tracing cross sections on a drawing and then carving these sections in wood, plastic or metal. The final model was determined by someone interpolating between the sections. This labor intensive art is being replaced by techniques of computer aided geometric design.
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Schwarz, Brandon A. (Brandon Alexander). « Evaluation of a methodology for detecting railroad track geometry anomalies and determining rail vehicle fatigue loads ». Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12401.

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Baratti, Greta. « ENVIRONMENTAL GEOMETRY IN FISHES AND TORTOISES : EFFECT OF LANDMARKS, BEHAVIOURAL METHODOLOGIES, AND SENSORY CHANNELS ON SPATIAL REORIENTATION ». Doctoral thesis, Università degli studi di Trento, 2022. https://hdl.handle.net/11572/356341.

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The present Thesis explored spatial reorientation behaviour of three species of fish (the zebrafish Danio rerio, the redtail splitfin fish Xenotoca eiseni, the goldfish Carassius auratus) and one species of reptiles (the Hermann tortoise Testudo hermanni) to widely assess three issues: 1) the use of environmental geometry with and without landmarks; 2) the role of two geometric tasks, one driven by spontaneous behaviour (“social-cued memory task”) and the other by learning processes (“rewarded exit task”); 3) the involvement of extra-visual sensory channels in visual transparency conditions, and motion patterns. The present Thesis applied behavioural assessments and analyses to pursue a line of comparison, across species, methodologies, and sensory systems. As regards environmental geometry and landmarks in fish and tortoises (Chapter 2), the studies were carried out within several apparatuses, that is, a rectangular opaque arena or two different sized square opaque arenas or a transparent square arena, with conspicuous or local landmarks: Study 1, Conspicuous landmark (blue wall) in zebrafish; Study 2: Local landmarks (corner panels) in zebrafish; Study 3, Environmental geometry in tortoises; Study 4, Conspicuous landmark (blue wall) in tortoises. As regards spontaneous vs. acquired geometric spatial reorientation in fishes (Chapter 3), the studies were carried out within a rectangular or square transparent arena, with or without geometric cues or a 3D landmark: Study 5, Nonvisual environmental geometry in zebrafish, redtail splitfin fish, and goldfish; Study 6, Isolated environmental geometric cues in zebrafish; Study 7, 3D outside landmark (blue cylinder) in zebrafish. As regards extra-visual sensory systems and motion patterns in fish (Chapter 4), one study was carried out within a rectangular transparent arena: Study 8, Lateral line pharmacological ablation in zebrafish. In respect of comparisons among species, overall results suggested that zebrafish, redtail splitfin fish, and goldfish reoriented similarly through transparent surfaces, which defined a distinctive global shape, supporting spatial reorientation under undefined situations (e.g., seek out food within a visually lacking and unenriched environment) as a shared skill among teleosts, despite ecological specificities. Likewise, the Hermann tortoise reoriented within a geometric environment with precision to meet a survival need, suggesting that even non-nomadic species that hibernate for long can benefit from orientation by extended terrain surfaces. In respect of memory tests (“working” vs. “reference”, spontaneous vs. acquired), overall results indicated that the rewarded exit task designed to train fish and tortoise to reorient required learning processes allowing them to overcome natural predispositions to improve other related abilities, such as landmark-use. The dissociation between working and reference memory in spatial domain must be considered highly dependent on task’s demands where attentional factors determine short-term memories and motivational states long-term ones. In respect of sensory channels and motion patterns, overall results revealed that fish and tortoises used modalities driven by touch, in synch with sight, to determine geometric parameters during spatial reorientation. Therefore, a promising link between other vertebrates and humans takes place, in consideration of orientation mechanisms used to face situations of visual deprivation or impairments. The present Thesis may even contribute to a general understanding of reorientation behaviour in phylogenetically remote vertebrate species, thus supporting the widespread use of geometry-grounded tools in everyday activities. This also provides comparative support among species that inhabit on Earth and share cognitive adaptations to deal with similar requests.
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Livres sur le sujet "Environmental geometry"

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Sal'kov, Nikolay. Geometry in education and science. ru : INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1158751.

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This monograph consists of the author's articles on geometry, geometric education, and the formation of the teaching staff. Various problems concerning the development of geometric science itself, as well as those that periodically arise in the pedagogical environment of universities, are considered. It is intended for a wide range of readers: not only geometers and those interested in geometry, but also those related to pedagogy and science.
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Laborde, Jean-Marie, dir. Intelligent Learning Environments : The Case of Geometry. Berlin, Heidelberg : Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-60927-5.

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Laborde, Jean-Marie. Intelligent Learning Environments : The Case of Geometry. Berlin, Heidelberg : Springer Berlin Heidelberg, 1996.

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Jean-Marie, Laborde, North Atantic Treaty Organization. Scientific Affairs Division. et NATO Advanced Research Workshop on Intelligent Learning Environments : the Case of Geometry (1989 : Grenoble, France), dir. Intelligent learning environments : The case of geometry. Berlin : Springer, 1996.

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Sal'kov, Nikolay. Descriptive geometry : Designing surfaces. ru : INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1196545.

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In the textbook, in addition to the geometric design of surfaces, the elements of analytical and parametric geometries are proposed that contribute to the design and bring the result to a higher level of knowledge, as well as a frame method for designing surfaces. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of the specialties "Architect" and " Designer of the architectural environment "(qualifications "bachelor", "specialist", "master"). It may be useful for students of other fields of study.
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Richard, Lehrer, et Chazan Daniel, dir. Designing learning environments for developing understanding of geometry and space. Mahwah, N.J : Lawrence Erlbaum, 1998.

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Irene, Hwang, Brotons Guillermo, Galán Carmen et Soriano Dolors, dir. Verb natures. Barcelona : Actar, 2006.

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Irene, Hwang, Brotons Guillermo, Galán Carmen et Soriano Dolors, dir. Verb natures. Barcelona : Actar, 2006.

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Sal'kov, Nikolay. Descriptive geometry : tasks for term papers. ru : INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1200606.

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The tutorial includes tasks in all sections of the descriptive geometry course for completing coursework. It is intended for students studying in the areas of "architecture" and "design of the architectural environment". It can be useful for students of other areas of higher education.
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Sallmen, Joseph P. A real-time computer control and trajectory generation environment for Trussarm. [Downsview, Ont.] : University of Toronto, [Institute for Aerospace Studies], 1993.

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Chapitres de livres sur le sujet "Environmental geometry"

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Andresen, Martin A. « Geometry of crime ». Dans Environmental Criminology, 49–70. Second edition. | Abingdon, Oxon ; New York, NY : Routledge, 2020. : Routledge, 2019. http://dx.doi.org/10.4324/9780429455391-6.

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Montello, Daniel R. « The geometry of environmental knowledge ». Dans Theories and Methods of Spatio-Temporal Reasoning in Geographic Space, 136–52. Berlin, Heidelberg : Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/3-540-55966-3_8.

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Fujisada, Hiroyuki. « Terra ASTER Instrument Design and Geometry ». Dans Land Remote Sensing and Global Environmental Change, 59–82. New York, NY : Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-6749-7_4.

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Imbert, Frédéric, Kathryn Stutts Frost, Al Fisher, Andrew Witt, Vincent Tourre et Benjamin Koren. « Concurrent Geometric, Structural and Environmental Design : Louvre Abu Dhabi ». Dans Advances in Architectural Geometry 2012, 77–90. Vienna : Springer Vienna, 2013. http://dx.doi.org/10.1007/978-3-7091-1251-9_6.

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Colbeck, Ian. « Fractal Geometry of Aerosol Particles ». Dans Biophysical Chemistry of Fractal Structures and Processes in Environmental Systems, 273–315. Chichester, UK : John Wiley & Sons, Ltd, 2008. http://dx.doi.org/10.1002/9780470511206.ch9.

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Boddy, Lynne, et Damian P. Donnelly. « Fractal Geometry and Microorganisms in the Environment ». Dans Biophysical Chemistry of Fractal Structures and Processes in Environmental Systems, 239–72. Chichester, UK : John Wiley & Sons, Ltd, 2008. http://dx.doi.org/10.1002/9780470511206.ch8.

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Liu, Kuixing, Wenyu Liu, Tingting Gan, Dayi Lai et Gang Liu. « Effects of Space Geometry, Season and Weather Condition on Different Components of Outdoor Thermal Radiation ». Dans Environmental Science and Engineering, 777–86. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-9520-8_80.

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Honti, Richard, Ján Erdélyi, Gabriela Bariczová, Alojz Kopáčik et Peter Kyrinovič. « Possibility of Use of BIM in Automated Geometry Check of Structures ». Dans Springer Proceedings in Earth and Environmental Sciences, 27–37. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-51953-7_3.

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Kennedy, Emma, et Dunbar P. Birnie. « Conduction Plane Geometry Factors for the β″-Alumina Structure ». Dans Advances in Materials Science for Environmental and Energy Technologies II, 199–208. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118751176.ch20.

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Xiong, Xiaoxiong, Robert Wolfe, William Barnes, Bruce Guenther, Eric Vermote, Nazmi Saleous et Vincent Salomonson. « Terra and Aqua MODIS Design, Radiometry, and Geometry in Support of Land Remote Sensing ». Dans Land Remote Sensing and Global Environmental Change, 133–64. New York, NY : Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-6749-7_7.

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Actes de conférences sur le sujet "Environmental geometry"

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Tripathi, R. K., L. C. Simonsen, J. E. Nealy, P. A. Troutman et J. W. Wilson. « Shield Optimization in Simple Geometry for the Gateway Concept ». Dans International Conference On Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2002. http://dx.doi.org/10.4271/2002-01-2332.

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Bonaventura, Luca. « Exponential Rosenbrock Integrators for Accurate Simulation of Environmental Flows ». Dans Annual International Conference on Computational Mathematics, Computational Geometry & Statistics. Global Science and Technology Forum (GSTF), 2012. http://dx.doi.org/10.5176/2251-1911_cmcgs37.

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Gong, Yanjun, XiChang Wang, Hongxing Qi et BingXi Yu. « Convex geometry analysis method of hyperspectral data ». Dans Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, sous la direction de Allen M. Larar, Qingxi Tong et Makoto Suzuki. SPIE, 2003. http://dx.doi.org/10.1117/12.467739.

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Jha, Nand K. « Study of Tool Geometry Effect on Environmental Impact ». Dans ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65926.

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The effect of tool geometry on the quality of the machined part has been an important consideration. Here the effect of tool geometry from energy minimization angle has been studied for sustainable manufacturing. The greenhouse gas (GHG) emission has been analyzed in terms of rake angle (α) and shear plane angle (φ). A numerical study of tool geometry and its effect on eco-indicators has been presented. The shear force (Fs) decreases as rake angle increases. The reduction in horse power requirement will affect the GHG emissions. It has been quantified how much CO2 is emitted in air during machining. The other toxic gases like NOx, SO2, CH4, and mercury (Hg) emissions have also been quantified. The friction force (F) declines very rapidly as rake angle (α) increases and reduce the lubricant requirement. The total specific energy (TSE) is summation of specific process energy (SPE) and specific constant energy (SCE).
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Zhang, Dianwen, XiaoCong Yuan, Swee Chuan Tjin, B. K. Ng, C. Y. Fu et R. Irawan. « Surface plasma resonance biosensor based on prism geometry ». Dans Optical Technologies for Industrial, Environmental, and Biological Sensing, sous la direction de Tuan Vo-Dinh, Guenter Gauglitz, Robert A. Lieberman, Klaus P. Schaefer et Dennis K. Killinger. SPIE, 2004. http://dx.doi.org/10.1117/12.524493.

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Etter, Rebecca G., Emilie R. Vanness et Richard O. Mines. « Impact of Bioreactor Geometry on K L a Coefficient ». Dans World Environmental and Water Resources Congress 2021. Reston, VA : American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483466.039.

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Nasseri‐Moghaddam, Ali, et Choon B. Park. « Multi Geometry Approach for MASW Survey ». Dans Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010. Environment and Engineering Geophysical Society, 2010. http://dx.doi.org/10.4133/1.3445491.

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Ripp, B. J., R. D. Prager et E. Ubben. « Meander Geometry Trends of Urbanized Beal Slough in Lincoln, Nebraska ». Dans World Water and Environmental Resources Congress 2004. Reston, VA : American Society of Civil Engineers, 2004. http://dx.doi.org/10.1061/40737(2004)414.

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Nasseri-Moghaddam, Ali, et Choon B. Park. « Multi Geometry Approach For Masw Survey ». Dans 23rd EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2010. http://dx.doi.org/10.3997/2214-4609-pdb.175.sageep074.

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Akbıyık, Hürrem, Hakan Yavuz et Yahya Erkan Akansu. « Investigation of the Electrode Geometry Configurations of Plasma Actuators ». Dans 10TH International Conference on Sustainable Energy and Environmental Protection. University of Maribor Press, 2017. http://dx.doi.org/10.18690/978-961-286-057-8.2.

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Rapports d'organisations sur le sujet "Environmental geometry"

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Moorehead, Stewart. Unsettled Topics in Obstacle Detection for Autonomous Agricultural Vehicles. SAE International, décembre 2021. http://dx.doi.org/10.4271/epr2021029.

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Agricultural vehicles often drive along the same terrain day after day or year after year. Yet, they still must detect if a moveable object, such as another vehicle or an animal, happens to be on their path or if environmental conditions have caused muddy spots or washouts. Obstacle detection is one of the major missing pieces that can remove humans from highly automated agricultural machines today and enable the autonomous vehicles of the future. Unsettled Topics in Obstacle Detection for Autonomous Agricultural Vehicles examines the challenges of environmental object detection and collision prevention, including air obscurants, holes and soft spots, prior maps, vehicle geometry, standards, and close contact with large objects.
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Roesler, Jeffery, Roberto Montemayor, John DeSantis et Prakhar Gupta. Evaluation of Premature Cracking in Urban Concrete Pavement. Illinois Center for Transportation, janvier 2021. http://dx.doi.org/10.36501/0197-9191/21-001.

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This study investigated the causes for premature, transverse cracking on urban jointed plain concrete pavements in Illinois. A field survey of 67 sections throughout Illinois coupled with ultrasonic evaluation was completed to synthesize the extent of premature cracking on urban JPCP. The visual survey showed some transverse and longitudinal cracks were a result of improper slab geometry (excessive slab length and width). Ultrasonic tests over the contraction joints determined some notched joints had not activated and adjacent transverse cracks were likely formed as a result. Three-dimensional finite-element analyses confirmed that cracking would not develop as a result of normal environmental factors and slab-base frictional restraint. The concrete mixture also did not appear to be a contributing factor to the premature cracks. Finally, the lack of lubrication on dowel bars was determined to potentially be a primary mechanism that could restrain the transverse contraction joints, produce excessive tensile stresses in the slab, and cause premature transverse cracks to develop.
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Crowe, Cheryll E. Exploring Geometric Transformations in a Dynamic Environment. Washington, DC : The MAA Mathematical Sciences Digital Library, juin 2010. http://dx.doi.org/10.4169/loci003506.

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Fennell, Joseph F., et Phillip C. Anderson. LEO Orbit Surface Charging and Its Relationship to Environment, Vehicle Geometry, and Ionospheric Conditions. Fort Belvoir, VA : Defense Technical Information Center, juin 2008. http://dx.doi.org/10.21236/ada483168.

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Moser, Robert, Preet Singh, Lawrence Kahn, Kimberly Kurtis, David González Niño et Zackery McClelland. Crevice corrosion and environmentally assisted cracking of high-strength duplex stainless steels in simulated concrete pore solutions. Engineer Research and Development Center (U.S.), août 2021. http://dx.doi.org/10.21079/11681/41620.

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This paper presents a study of crevice corrosion and environmentally assisted cracking (EAC) mechanisms in UNS S32205 and S32304 which were cold drawn to tensile strengths of approximately 1300 MPa. The study utilized a combination of electrochemical methods and slow strain rate testing to evaluate EAC susceptibility. UNS S32205 was not susceptible to crevice corrosion in stranded geometries at Cl⁻ concentrations up to 1.0 M in alkaline and carbonated simulated concrete pore solutions. UNS S32304 did exhibit a reduction in corrosion resistance when tested in a stranded geometry. UNS S32205 and S32304 were not susceptible to stress corrosion cracking at Cl⁻ concentrations up to 0.5 M in alkaline and carbonated solutions but were susceptible to hydrogen embrittlement with cathodic overprotection.
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Lee, D. T. Final Project Report on An Environment for Geometric Object Manipulation and Monitoring. Fort Belvoir, VA : Defense Technical Information Center, janvier 1997. http://dx.doi.org/10.21236/ada327653.

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Saltus, Christina, Todd Swannack et S. McKay. Geospatial Suitability Indices Toolbox (GSI Toolbox). Engineer Research and Development Center (U.S.), septembre 2021. http://dx.doi.org/10.21079/11681/41881.

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Habitat suitability models are widely adopted in ecosystem management and restoration, where these index models are used to assess environmental impacts and benefits based on the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). Here, we present a geospatial toolbox for assessing habitat suitability. The Geospatial Suitability Indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python® 3.7 programming language and is available for use on the local desktop in the Windows 10 environment. Two main tools comprise the GSI toolbox. First, the Suitability Index Calculator tool uses thematic or continuous geospatial raster layers to calculate parameter suitability indices based on user-specified habitat relationships. Second, the Overall Suitability Index Calculator combines multiple parameter suitability indices into one overarching index using one or more options, including: arithmetic mean, weighted arithmetic mean, geometric mean, and minimum limiting factor. The resultant output is a raster layer representing habitat suitability values from 0.0 to 1.0, where zero is unsuitable habitat and one is ideal suitability. This report documents the model purpose and development as well as provides a user’s guide for the GSI toolbox.
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Saltus, Christina, S. McKay et Todd Swannack. Geospatial suitability indices (GSI) toolbox : user's guide. Engineer Research and Development Center (U.S.), août 2022. http://dx.doi.org/10.21079/11681/45128.

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Habitat suitability models have been widely adopted in ecosystem management and restoration to assess environmental impacts and benefits according to the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). This technical report presents a geospatial toolbox for assessing habitat suitability. The geospatial suitability indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python 3.7 programming language and is available for use on the local desktop in the Windows 10 environment. Two main tools comprise the GSI toolbox. First, the suitability index (SIC) calculator tool uses thematic or continuous geospatial raster layers to calculate parameter suitability indices using user-specified habitat relationships. Second, the overall suitability index calculator (OSIC) combines multiple parameter suitability indices into one overarching index using one or more options, including arithmetic mean, weighted arithmetic mean, geometric mean, and minimum limiting factor. The result is a raster layer representing habitat suitability values from 0.0–1.0, where zero (0) is unsuitable habitat and one (1) is ideal suitability. This report documents the model purpose and development and provides a user’s guide for the GSI toolbox.
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Ukkusuri, Satish, Lu Ling, Tho V. Le et Wenbo Zhang. Performance of Right-Turn Lane Designs at Intersections. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317277.

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Right-turn lane (RTL) crashes are among the most key contributors to intersection crashes in the US. Different right turn lanes based on their design, traffic volume, and location have varying levels of crash risk. Therefore, engineers and researchers have been looking for alternative ways to improve the safety and operations for right-turn traffic. This study investigates the traffic safety performance of the RTL in Indiana state based on multi-sources, including official crash reports, official database, and field study. To understand the RTL crashes' influencing factors, we introduce a random effect negative binomial model and log-linear model to estimate the impact of influencing factors on the crash frequency and severity and adopt the robustness test to verify the reliability of estimations. In addition to the environmental factors, spatial and temporal factors, intersection, and RTL geometric factors, we propose build environment factors such as the RTL geometrics and intersection characteristics to address the endogeneity issues, which is rarely addressed in the accident-related research literature. Last, we develop a case study with the help of the Indiana Department of Transportation (INDOT). The empirical analyses indicate that RTL crash frequency and severity is mainly influenced by turn radius, traffic control, and other intersection related factors such as right-turn type and speed limit, channelized type, and AADT, acceleration lane and AADT. In particular, the effects of these factors are different among counties and right turn lane roadway types.
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Bradley, Jonathan L. Changing the Battlefield Geometry of the JOPP : Accounting for Local Populations as the Third Force in the Operational Environment through the Institution of the Green Cell. Fort Belvoir, VA : Defense Technical Information Center, mai 2011. http://dx.doi.org/10.21236/ada545964.

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