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Articles de revues sur le sujet « Environmental geometry »

Pour voir les autres types de publications sur ce sujet consultez le lien suivant : Environmental geometry.
Auteur : Grafiati
Publié le 11 mars 2023

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1

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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Anissa, Donna, Citra Utami et Rika Wahyuni. « Hubungan Kemampuan Spasial Matematis dengan Minat Belajar Siswa pada Materi Geometri ». Variabel 5, no 2 (31 octobre 2022) : 125. http://dx.doi.org/10.26737/var.v5i2.1933.

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<p><em>Tujuan penelitian ini adalah untuk mengetahui hubungan kemampuan spasial matematis dengan minat belajar siswa dalam belajar materi geometri. Metode penelitian ini merupakan penelitian korelasi dan ex post facto dengan pendekatan kuantitatif. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 4 Singkawang. Teknik pengambilan sampel dalam penelitian ini adalah purposive sampling. Sampel dalam penelitian ini adalah siswa kelas VIII H yang berjumlah</em><em> 26 siswa. </em><em>Teknik pengumpulan data dalam penelitian ini berdasarkan teknik pengukuran dan teknik komunikasi tidak langsung, yaitu menggunakan tes kemampuan spasial matematis pada materi geometri yang berbentuk uraian dan angket minat belajar. Teknik analisis data yang digunakan adalah Korelasi Pearson Product Momen (PPM). Hasil penelitian menunjukkan bahwa</em> <em>(</em><em>1</em><em>) tingkat kemampuan spasial matematis pada materi geometri tergolong tinggi dengan nilai rata-rata keseluruhan 60,</em><em> (</em><em>2) minat belajar siswa pada materi geometri tergolong tinggi dengan nilai rata-rata keseluruhan 82, (3)</em><em> </em><em>terdapat hubungan kemampuan spasial matematis dengan minat belajar siswa pada materi geometri dengan kontribusi sebesar 69%. Jadi dapat disimpulkan bahwa terdapat hubungan antara kemampuan spasial matematis dengan minat belajar siswa pada materi geometri.</em></p><p><strong><em>Kata Kunc</em></strong><strong><em>i</em></strong><strong><em>:</em></strong><em></em></p><p>Kemampuan Spasial Matematis; Minat Belajar; Geometri</p><p> </p><p><strong>The Relationship of Mathematical Spatial Ability with Students' Learning Interest on Geometry</strong></p><p><strong><em>ABSTRACT</em></strong></p><p><em>The purpose of this study is to determine the relationship of mathematical spatial ability with students' interest in learning geometry. This research method was a correlation and ex post facto research with a quantitative approach. The population in this study was all grade VIII students of SMP Negeri 4 Singkawang. The sampling technique in this study was purposive sampling. The sample in this study was class VIII H students totaling 26 students. The data collection technique in this study was based on measurement techniques and indirect communication techniques, namely using mathematical spatial ability tests on geometric in the form of descriptions and questionnaires of interest in learning. The data analysis technique used was </em><em>analysis of the average value </em><em>and Pearson Product Moment Correlation (PPM). The results showed that (1) the level of mathematical spatial ability in geometry was relatively high with an overall average score of 60, (2) students' interest in learning geometry was relatively high with an overall average score of 82, (3) there was a relationship between mathematical spatial ability and students' interest in learning geometry with a contribution of 69%. So it can be concluded that there was a relationship between mathematical spatial ability and students' interest in learning geometry.</em><em></em></p>
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Ji, Huimin, Yunlong Peng et Wowo Ding. « A Quantitative Study of Geometric Characteristics of Urban Space Based on the Correlation with Microclimate ». Sustainability 11, no 18 (11 septembre 2019) : 4951. http://dx.doi.org/10.3390/su11184951.

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With the sustainability of contemporary cities gaining more and more attention, interest in the correlation between urban geometry and urban microclimate is increasing. On this basis, this paper aims to investigate the quantification of geometric characteristics of urban space. Based on a combination of easily accessible software packages, a quantitative method composed of spatial partition, spatial characteristic indices (area, shape, and openness), and a spatial classification chart is proposed for the study of the correlation between urban spatial geometry and urban microclimate. Two blocks with different spatial geometric characteristics of the Xinjiekou central area in Nanjing are selected as the cases to verify the operability and effectiveness of this method. The results reveal that complex real urban space can be quantitatively described and classified by this spatial quantification method. In addition, a possible correlation between urban spatial geometry and urban wind environment is demonstrated by using the method, which may also be applicable to the correlation study between urban spatial geometry and other environmental issues.
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Aini, Nurul, et Eny Suryowati. « Mengeksplor Penalaran Spasial Siswa dalam Menyelesaikan Soal Geometri Berdasarkan Gender ». Mosharafa : Jurnal Pendidikan Matematika 11, no 1 (31 janvier 2022) : 61–72. http://dx.doi.org/10.31980/mosharafa.v11i1.1183.

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AbstrakPenalaran spasial penting untuk dibangun dan dikembangkan karena membantu siswa dalam memahami suatu konsep geometri. Namun, penalaran spasial siswa tahap operasional konkret masih jarang diteliti, sedangkan ditahap tersebut merupakan awal anak dalam memahami geometri. Tujuan penelitian adalah mengeksplor penalaran spasial siswa dalam menyelesaikan soal geometri berdasarkan gender. Jenis penelitian kualitatif deskriptif. Instrumen pendukung yaitu lembar tugas penalaran spasial dan pedoman wawancara. Metode pengumpulan data dengan menggunakan tes dan wawancara. Responden dari siswa kelas 5 MI AL-ASY’ARI Keras Diwek Jombang sejumlah 28 siswa, lalu subjek penelitian diambil 1 laki-laki dan 1 perempuan berdasarkan purposive sampling. Hasil penelitian menunjukkan siswa laki-laki lebih dominan dalam visualisasi spasial, siswa perempuan lebih dominan dalam orientasi spasial. Namun, pada rotasi spasial memiliki kemampuan penalaran spasial yang sama. Exploring Students' Spatial Reasoning in Solving Geometry Problems Based on Gender AbstractSpatial reasoning is important to build and develop because it helps students understand a geometric concept. However, the spatial reasoning of students in the concrete operational stage is still rarely studied, while at this stage is the beginning of children in understanding geometry. The purpose of the study was to explore students' spatial reasoning in solving geometry problems based on gender. This type of descriptive qualitative research. Supporting instruments are spatial reasoning task sheets and interview guidelines. Data collection methods using tests and interviews. Respondents from class 5 students at MI AL-ASY'ARI Keras Diwek Jombang were 28 students, then the research subjects were 1 male and 1 female based on purposive sampling. The results showed that male students were more dominant in spatial visualization, female students were more dominant in spatial orientation. However, the spatial rotation has the same spatial reasoning ability.
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Ordiz, Joshua Edson Gorme, et Ghanine Rhea Mecate. « CLUSTERS OF PREVALENT PATTERNS OF GEOMETRIC THINKING LEVELS AMONG MATHEMATICS STUDENTS ». Infinity Journal 11, no 1 (12 janvier 2022) : 77. http://dx.doi.org/10.22460/infinity.v11i1.p77-86.

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Geometric thinking skills are the perceived abilities of an individual to think and reason in geometric contexts. These skills acquired by students in geometry remain poor and unsettling because of the misconceptions that hinder the students in learning the components of geometry. The study described the common unplaceable patterns in geometric thinking of 153 mathematics education students in a state university in Eastern Visayas, Philippines. Frequency Analysis was employed in the study to determine the number of occurrences of the patterns stressing the cause for students placed under level 0 or unplaceable. Van Hiele Achievement Test was used to gather the students’ performance in geometry at all levels, namely: visualization, analysis, informal deduction, deduction, and rigor. The findings attested that only 13.1% of the students managed the third level of the Van Hiele Levels while 43.1% of them were unplaceable. Common patterns were drawn and describe to understand the consequences in geometric thinking ability at level 0. These observable patterns were grouped into core-remedial, topical-corrective, and close-corrective groups. The clusters will enable educational institutions to address the individual gaps in geometry.
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Keinath, Alex T., Joshua B. Julian, Russell A. Epstein et Isabel A. Muzzio. « Environmental Geometry Aligns the Hippocampal Map during Spatial Reorientation ». Current Biology 27, no 3 (février 2017) : 309–17. http://dx.doi.org/10.1016/j.cub.2016.11.046.

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Kujawski, Daniel. « Environmental Crack Growth Behavior Affected by Thickness/Geometry Constraint ». Metallurgical and Materials Transactions A 44, no 3 (13 novembre 2012) : 1340–52. http://dx.doi.org/10.1007/s11661-012-1507-8.

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Gutman, Ivan. « Sombor indices–back to geometry ». Open Journal of Discrete Applied Mathematics 5, no 2 (23 juillet 2022) : 1–5. http://dx.doi.org/10.30538/psrp-odam2022.0072.

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The Sombor index (\(SO\)) is a vertex-degree-based graph invariant, defined as the sum over all pairs of adjacent vertices of \(\sqrt{d_i^2+d_j^2}\), where \(d_i\) is the degree of the \(i\)-th vertex. It has been conceived using geometric considerations. Numerous researches of \(SO\) that followed, ignored its geometric origin. We now show that geometry-based reasonings reveal the geometric background of several classical topological indices (Zagreb, Albertson) and lead to a series of new \(SO\)-like degree-based graph invariants.
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Chandrashekara A C. « System Hypothesis Implications of Algebraic Geometry ». international journal of engineering technology and management sciences 7, no 1 (28 février 2023) : 105–8. http://dx.doi.org/10.46647/ijetms.2023.v07i01.018.

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Certain pole-placement concepts, such as an enhanced form of pole location with output response, are proven using fundamental algebraic geometry equations. Illustrations that highlight the algebra-geometric equations drawbacks and its possible application to systems analysis are shown. This study and ones that may come after it may help to make the potent theorems of current algebraic geometry comprehensible and useful for solving technical hurdles.
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Muslim, Siska Ryane, et Mega Nur Prabawati. « Studi Etnomatematika terhadap Para Pengrajin Payung Geulis Tasikmalaya Jawa Barat ». Mosharafa : Jurnal Pendidikan Matematika 9, no 1 (16 février 2020) : 59–70. http://dx.doi.org/10.31980/mosharafa.v9i1.628.

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AbstrakPenelitian dilatarbelakangi pertentangan opini mengenai hubungan matematika dengan budaya, yang mengarah pada ethnomathematics. Tujuan penelitian untuk mengetahui serta mendeskripsikan etnomatematika pada pembuatan Payung Geulis Tasikmalaya. Metode penelitian yaitu kualitatif dengan metode etnografi. Subjek penelitian dipilih melalui metode purposive sampling, yaitu tiga orang pengrajin Payung Geulis yang berada di Panyingkiran, Indihiang, Kota Tasikmalaya serta telah menjadi pengrajin selama lebih dari 10 tahun. Teknik pengumpulan data yaitu dengan observasi, wawancara dan dokumentasi. Instrumen penelitian yaitu peneliti sendiri dengan didukung beberapa instrumen lainnya yaitu pedoman observasi, pedoman wawancara, alat rekam dan kamera. Teknik analisis data yang digunakan dalam penelitian ini yaitu reduksi data, penyajian data dan menarik kesimpulan atau verifikasi. Berdasarkan hasil analisis data, disimpulkan bahwa terdapat kaitan antara Payung Geulis dengan matematika yang ditunjukkan dengan adanya unsur-unsur matematika berdasarkan konsep geometri. Konsep geometri tersebut diantaranya berupa geometri bangun datar, geometri bangun ruang, simetri, geometri transformasi (refleksi, translasi, dan rotasi) serta kekongruenan. Ethnomathematics Study of Payung Geulis Craftmans Tasikmalaya AbstractResearch is motivated by conflicting opinions about the relationship between mathematics and culture, which leads to ethnomathematics. This research aims to determine and describe ethnomathematics in the manufacture of Tasikmalaya Geulis Umbrellas. The research method is qualitative with ethnographic methods. The subjects in this study were selected using a purposive sampling method where the subject was a Payulis Geulis craftsman in Panyingkiran, Indihiang, Tasikmalaya City and had been a craftsman for more than 10 years. Data collection techniques used are observation, interview, and documentation. The research instrument was the researcher himself, supported by several other instruments, namely observation guidelines, interview guidelines, recording equipment, and cameras. Data analysis techniques used in this study are data reduction, data presentation and drawing conclusions or verification. Based on the results of data analysis, it was concluded that there is a relationship between Umbrella Geulis with mathematics which is indicated by the existence of mathematical elements based on the concept of geometry. The geometrical concepts include the geometry of the flat structure, geometry of geometry, symmetry, the geometry of transformation (reflection, translation, and rotation) and concordance.
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Lee, Sang Ah, Elizabeth S. Spelke et Giorgio Vallortigara. « Chicks, like children, spontaneously reorient by three-dimensional environmental geometry, not by image matching ». Biology Letters 8, no 4 (14 mars 2012) : 492–94. http://dx.doi.org/10.1098/rsbl.2012.0067.

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Spatial reorientation by layout geometry occurs in numerous species, but its underlying mechanisms are debated. While some argue that navigating animals' sense of place is based on geometric computations over three-dimensional representations, others claim it depends on panoramic image-matching processes. Because children reorient by subtle three-dimensional perturbations of the terrain and not by salient two-dimensional brightness contours on surfaces or freestanding columns, children's sense of place cannot be explained by image matching. To test image-matching theories in a different species, the present experiment investigates the reorientation performance of domestic chicks ( Gallus gallus ) in environments similar to those used with children. Chicks, like children, spontaneously reoriented by geometric relationships of subtle three-dimensional terrains, and not by salient two-dimensional brightness contours on surfaces or columns. These findings add to the evidence for homologous navigation systems in humans and other vertebrates, and they cast doubt on image-matching theories of reorientation in these species.
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Istikomah, Endang, et Dadang Juandi. « DGS-Based Modules : Difficulty Aspects of Studying Geometry at University Level ». Kreano, Jurnal Matematika Kreatif-Inovatif 13, no 2 (9 octobre 2022) : 186–98. http://dx.doi.org/10.15294/kreano.v13i2.34541.

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This study aims to ensure that geometry is the most difficult subject to understand, aspects of the difficulty of learning geometry for students, and suggestions for reducing difficulties. This study uses an exploratory mixed methods design. Students of mathematics education teacher candidates in semesters 3-7 as research subjects were selected by purposive sampling. The data collected in this study used a questionnaire technique, interviews, and the value of learning outcomes for the last 4 years. The results showed that geometry is the most difficult subject, the external learning difficulties factor is dominated by the aspects of the material and learning methods. In addition, references, media, and online learning are also discussed factors. Meanwhile, students' learning difficulties internally from the aspect of motivation and intelligence. One solution suggested to educators is to take advantage of the collaboration of DGS with the Geometry module in learning in dealing with learning difficulties.Tujuan penelitian ini adalah untuk memastikan bahwa geometri merupakan matakuliah yang paling sulit dipahami, aspek kesulitan belajar geometri pada mahasiswa dan saran untuk mengurangi kesulitan. Penelitian ini menggunakan Eksploratory mixed methods design. Mahasiswa calon guru pendidikan matematika semester 3-7 sebagai subjek penelitian dipilih dengan teknik purposive sampling. Teknik pengumpulan data menggunakan teknik angket, wawancara dan nilai hasil belajar selama 4 tahun terakhir. Hasil penelitian menunjukkan bahwa geometri merupakan matakuliah paling sulit, faktor kesulitan belajar secara eksternal didominasi dari aspek materi dan metode pembelajaran. Selain itu, referensi atau bahan ajar, media dan pembelajaran secara daring juga menjadi factor yang dibahas. Sedangkan kesulitan belajar mahasiswa secara internal dari aspek motivasi dan intelegensi atau kemampuan keruangan. Salah satu solusi yang disarankan kepada pendidik adalah memanfaatkan DGS yang dikolaborasikan dengan Modul Geometri dalam pembelajaran untuk menangani masalah kesulitan belajar.
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Poulter, Steven L., Yutaka Kosaki, David J. Sanderson et Anthony McGregor. « Spontaneous object-location memory based on environmental geometry is impaired by both hippocampal and dorsolateral striatal lesions ». Brain and Neuroscience Advances 4 (janvier 2020) : 239821282097259. http://dx.doi.org/10.1177/2398212820972599.

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We examined the role of the hippocampus and the dorsolateral striatum in the representation of environmental geometry using a spontaneous object recognition procedure. Rats were placed in a kite-shaped arena and allowed to explore two distinctive objects in each of the right-angled corners. In a different room, rats were then placed into a rectangular arena with two identical copies of one of the two objects from the exploration phase, one in each of the two adjacent right-angled corners that were separated by a long wall. Time spent exploring these two objects was recorded as a measure of recognition memory. Since both objects were in different locations with respect to the room (different between exploration and test phases) and the global geometry (also different between exploration and test phases), differential exploration of the objects must be a result of initial habituation to the object relative to its local geometric context. The results indicated an impairment in processing the local geometric features of the environment for both hippocampus and dorsolateral striatum lesioned rats compared with sham-operated controls, though a control experiment showed these rats were unimpaired in a standard object recognition task. The dorsolateral striatum has previously been implicated in egocentric route-learning, but the results indicate an unexpected role for the dorsolateral striatum in processing the spatial layout of the environment. The results provide the first evidence that lesions to the hippocampus and dorsolateral striatum impair spontaneous encoding of local environmental geometric features.
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Baratti, Greta, Davide Potrich et Valeria Anna Sovrano. « The Environmental Geometry in Spatial Learning by Zebrafish (Danio rerio) ». Zebrafish 17, no 2 (1 avril 2020) : 131–38. http://dx.doi.org/10.1089/zeb.2019.1845.

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Medvedev, N. N., V. P. Voloshin et Yu I. Naberukhin. « Local environmental geometry of atoms in the Lennard-Jones systems ». Materials Chemistry and Physics 14, no 6 (juin 1986) : 533–48. http://dx.doi.org/10.1016/0254-0584(86)90097-0.

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Yunianta, Tri Nova Hasti, et Lusiyati Lusiyati. « IDENTIFIKASI KETERAMPILAN GEOMETRI SISWA LAKI-LAKI DAN PEREMPUAN SMP BERDASARKAN TINGKATAN VAN HIELE DALAM MENYELESAIKAN SOAL BANGUN DATAR ». Satya Widya 36, no 1 (20 janvier 2021) : 45–55. http://dx.doi.org/10.24246/j.sw.2020.v36.i1.p45-55.

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This qualitative descriptive study aims to identify the geometry skills of both male and female secondary school (SMP) students based on Van Hiele level in solving a flat wake up problem. The selection of the subject using purposive sampling technique consisting of 2 students (1 male and 1 female) of 35 students in class VIII A SMP Negeri 2 Sumowono who have been working on a test adapted from the project CDASSG Usiskin ie VHGT test and the result has a level of geometry thinking van Hiele. This study will identify differences in geometry skills that exist in female and male students who have geometric thought levels of van Hiele. Data collection techniques using test methods, interviews and documentation. The results showed that both subjects had a level of geometric thinking van Hiele and both had visual, verbal, drawing, logic and applied skills differentiating in solving the problem.
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Rathore, Sanjay Singh, Subhash Babu, Kapila Shekhawat, Vinod K. Singh, Pravin Kumar Upadhyay, Rajiv Kumar Singh, Rishi Raj, Harveer Singh et Fida Mohammad Zaki. « Oilseed Brassica Species Diversification and Crop Geometry Influence the Productivity, Economics, and Environmental Footprints under Semi-Arid Regions ». Sustainability 14, no 4 (16 février 2022) : 2230. http://dx.doi.org/10.3390/su14042230.

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The article presents the findings of three-year field experiments conducted during 2017–2020 on the productivity, economics, and environmental footprints of the oilseed Brassica (OSB) with species diversification and crop geometry alterations in semi-arid regions of India. The objectives of the field experimentation was to assess the system of mustard intensification (SMI) in enhancing productivity and profitability with ensuring fewer environmental footprints. The results revealed that Brassica carinata gave a maximum seed productivity (3173.8 kg ha−1) and net returns (US$ 1141.72 ha−1) under a crop geometry of 60 cm × 60 cm. Further, an increase of 38% and 54% in seed yield and net returns from B. carinata was observed over the existing traditional Brassica juncea with conventional crop geometry. The maximum energy output was also recorded from B. carinata (246,445 MJ ha−1). The broader crop geometry (60 cm × 60 cm) also resulted in maximum energy output. The environmental footprint was lesser due to increased carbon gain (CG), carbon output (CO), and carbon production efficiency (CPE) and lower greenhouse gas intensity (GHGi) in B. carinata. However, the maximum water-use efficiency (WUE) was recorded in B. juncea (19.15 kg per ha-mm), with a minimum water footprint (WFP), whereas, greater crop geometry (60 cm × 60 cm) resulted in lower WFPs and better irrigation water use. Enhanced seed yield, economics, and fewer environmental footprints were observed at broader crop geometry in B. carinata over remaining OSBs.
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Debarre, Olivier, David Eisenbud, Gavril Farkas et Ravi Vakil. « Classical Algebraic Geometry ». Oberwolfach Reports 18, no 2 (24 août 2022) : 1519–77. http://dx.doi.org/10.4171/owr/2021/29.

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Hodiyanto, Hodiyanto, et Danar Santoso. « How Geometer’s Sketchpad (GSP) Develops Geometry Concept Understanding ». International Journal of Trends in Mathematics Education Research 3, no 1 (30 mars 2020) : 31–35. http://dx.doi.org/10.33122/ijtmer.v3i1.169.

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The purpose of this study is to show that the development of analytical geometric practicum module based on the application of Geometer Sketpched (GSP) is effective and practical in developing Geometry Concept Understanding. The research method used in this research is research and development. The research subjects in this study consisted of the subject of development and the subject of trials, students of the Mathematics Education Study Program IKIP PGRI Pontianak. Research Procedure: define, design, and development. Data collection tools used in the form of: (1) Validation sheets (2) Questionnaire responses (3) Tests (posttest). The data analysis technique used in this study uses descriptive statistics. Based on the results of research and discussion, in this study it can be concluded that: (1) the practicum module developed is classified as very valid, (2) the practicum module developed is very practical, and (3) the practicum module developed is effective in increasing students' understanding of concepts.
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Nurapriani, Reni, Aldila Rahma et Rini Alfiyah. « Cooking Class To Improve Geometry Recognition Ability In Early Children ». Indonesian Journal of Islamic Early Childhood Education 6, no 1 (5 juillet 2021) : 98–107. http://dx.doi.org/10.51529/ijiece.v6i1.241.

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Abstract Geometry is one of the basic math concepts that are crucial for early childhood development because it relates to objects in the environment around children. Cooking class activity is one way to improve the ability to recognize geometry in children, through food processing activities. This study aims to determine the effect of cooking class activities on improving the ability to recognize geometric shapes in early childhood. This research uses a quantitative approach with the Pre-Experimental method, one group pretest-posttest type. The study population was students aged 5-6 years (group B) consist of 15 children from Paud Al-Manshurin, Bandung. Data collection was carried out through observation, interviews including documentation. From the research results, it was obtained that the pre-test average score was 2.1 and the post-test score was 3.3. The t-test shows t value > t table (17.429> 1.761) with a significance level of 5%. These results indicate that cooking class activity significantly influences the child's ability to recognize geometric shape. Keywords: geometry, cooking class, early childhood, pre experimental
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Smith, Tyler W., et Jeremy T. Lundholm. « Environmental geometry and heterogeneity-diversity relationships in spatially explicit simulated communities ». Journal of Vegetation Science 23, no 4 (13 janvier 2012) : 732–44. http://dx.doi.org/10.1111/j.1654-1103.2011.01380.x.

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Gross, Kevin, et Andrew Snyder-Beattie. « A General, Synthetic Model for Predicting Biodiversity Gradients from Environmental Geometry ». American Naturalist 188, no 4 (octobre 2016) : E85—E97. http://dx.doi.org/10.1086/688171.

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Lee, S. A., G. Vallortigara, M. Flore, E. S. Spelke et V. A. Sovrano. « Navigation by environmental geometry : the use of zebrafish as a model ». Journal of Experimental Biology 216, no 19 (20 juin 2013) : 3693–99. http://dx.doi.org/10.1242/jeb.088625.

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Lever, Colin, Tom Wills, Francesca Cacucci, Neil Burgess et John O'Keefe. « Long-term plasticity in hippocampal place-cell representation of environmental geometry ». Nature 416, no 6876 (mars 2002) : 90–94. http://dx.doi.org/10.1038/416090a.

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Stienen, Jonas, et Michael Vorlaender. « Geometry-based diffraction auralization for real-time applications in environmental noise ». Journal of the Acoustical Society of America 141, no 5 (mai 2017) : 3536. http://dx.doi.org/10.1121/1.4987468.

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Shipworth, David, et Russell Kenley. « Fitness Landscapes and the Precautionary Principle : The Geometry of Environmental Risk ». Environmental Management 24, no 1 (1 juillet 1999) : 121–31. http://dx.doi.org/10.1007/s002679900220.

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Zukhrufurrohmah, Zukhrufurrohmah, et Mayang Dintarini. « Microsoft Form as a Scaffolding-Based Geometry Learning Media in Online Learning ». Kreano, Jurnal Matematika Kreatif-Inovatif 12, no 2 (30 novembre 2021) : 252–63. http://dx.doi.org/10.15294/kreano.v12i2.30542.

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Geometry learning outcomes are lower than other mathematical fields, so media are needed to overcome students' difficulties solving geometry problems. This study aims to produce a product in online learning media for scaffolding-based geometry materials using Microsoft Form. There are three stages of Research and Development research, namely preliminary research, prototyping, and assessment. The validation results show that the scaffolding-based media developed is valid with a percentage of 76%. Field notes show that the scaffolding-based media developed can be used easily and practically by lecturers and students. A positive response was also given by 30 third semester students who used media in learning circle material. The test results showed that 73% of the total number of students scored no less than 70. Therefore, the scaffolding-based media developed was declared valid, practical, and effective in learning circle material.Hasil belajar geometri lebih rendah dibandingkan bidang matematika lainnya, sehingga diperlukan media untuk mengatasi berbagai kesulitan siswa dalam menyelesaikan permasalahan geometri. Penelitian ini bertujuan untuk menghasilkan produk berupa media pembelajaran online materi geometri berbasis scaffolding menggunakan Microsoft Form. Tiga tahapan penelitian Research and Development penelitian ini yaitu penelitian pendahuluan, pembuatan prototipe, dan asesmen. Hasil validasi menunjukkna bahwa media berbasis scaffolding yang dikembangkan valid dengan persentase 76%. Catatan lapangan menunjukkan media berbasis scaffolding yang dikembangkan dapat digunakan dengan mudah dan praktis oleh dosen maupun mahasiswa. Respon positif juga diberikan oleh 30 mahasiswa semester 3 yang menggunakan media pada pembelajaran materi lingkaran. Hasil tes menunjukkan bahwa 73% dari jumlah mahasiswa mendapatkan nilai tidak kurang dari 70. Oleh karena itu media berbasis scaffolding yang dikembangkan dinyatakan valid, praktis dan efektif dalam pembelajaran materi lingkaran.
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Liu, Sijing, Qile Zhao, Gang Chen, Zhigang Hu et Nengfang Chao. « Comparison of Single-Site Ionospheric Delays Derived from Geometry-Free and Geometry-Based Approaches with an Analysis of Orbit and Clock Error Effects ». Atmosphere 12, no 6 (30 mai 2021) : 703. http://dx.doi.org/10.3390/atmos12060703.

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The reparameterization of the geometry-free and geometry-based approaches to derive single-site ionospheric delays using Global Navigation Satellite System (GNSS) measurements is described. Kalman filtering is used to compute the geometry-free and geometry-based ionospheric delays in a forward computation procedure, aiming for a real-time application case. The numerical similarity and differences between the geometry-free and geometry-based ionospheric delays are assessed in terms of both formal and experimental errors (precision). The differences between geometry-free and geometry-based ionospheric delays are derived using two types of precise orbit and clock products. The effects of the precise orbit and clock residual errors are analyzed. The correlation coefficients between the L1 and L2 wide-lane ambiguities with the ionospheric delay are derived and analyzed. It is discovered that the geometry-based ionospheric delay is negatively correlated with geometry-based wide-lane ambiguities, while the geometry-free ionospheric delay and wide-lane ambiguities are much less correlated. A simulation analysis indicates that the impacts on geometry-based ionospheric delay estimates are partly coincided with the actual time-variant errors of the used orbit and clock in the line-of-sight direction.
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Ghotbi, S., B. Pirzadeh, Davod Mohebbi-Kalhori et A. Abdollahi. « Numerical investigation of UF membrane to reduce energy consumption using double porosity approach ». Water Science and Technology 77, no 12 (26 juin 2018) : 2907–16. http://dx.doi.org/10.2166/wst.2018.280.

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Abstract Hollow fiber (HF) membranes with circular geometry, are used in many separation processes such as water and wastewater treatment. Since optimization of energy efficiency is important for wastewater treatment, the aim of this study was to investigate the effect of non-circular geometry of the inner surface of the HF on the separation performance. To this purpose, the HF bundle has been assumed as a double porous media having two porosities and permeabilities. Since these two parameters are defined by the geometry of the porous medium, any change in the geometry affects their values and the media performance. Therefore, in this study a mathematical modeling has been divided into five categories, including circular, oval, square, rectangular and triangular geometries, and their geometric properties have been calculated based on three different strategies. The results have been compared with the data obtained from literature and showed that the membrane inner surface to cross-section area ratio (a), axial permeability, and porosity in the inner region for the non-circular HF are larger than that of the circular HF and a increased 16%, 27%, 35% and 65% in ellipse, square, rectangle and triangle geometry, respectively, in comparison with the circle. Axial permeability increased 98%, 68%, 63%, and 26% for a triangle, rectangle, ellipse, and square respectively in the third strategy when compared to the circle. Due to 50% feed flow rate reduction, maximum transmembrane pressure (TMP) reduction was 85% related to the rectangular geometry in the first strategy and minimum was 55% corresponding to the triangle in the third strategy. As a increased up to 65%, TMP reduced by up to 200% and consequently energy consumption and operating costs of the system are decreased.
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Wang, Zhongying, Wenpeng Zhu, Yang Qiu, Xin Yi, Annette von dem Bussche, Agnes Kane, Huajian Gao, Kristie Koski et Robert Hurt. « Biological and environmental interactions of emerging two-dimensional nanomaterials ». Chemical Society Reviews 45, no 6 (2016) : 1750–80. http://dx.doi.org/10.1039/c5cs00914f.

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Two-dimensional materials interact with biological systems and the natural environment in unique ways determined by their atomically thin geometry and enormous chemical diversity. This review focused on the basic interaction mechanisms and their implications for technology development and safe material design.
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Whitaker, R. T. « Geometry-Limited Diffusion in the Characterization of Geometric Patches in Images ». CVGIP : Image Understanding 57, no 1 (janvier 1993) : 111–20. http://dx.doi.org/10.1006/ciun.1993.1007.

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Fulara, Szymon, Maciej Chmielewski et Marian Gieras. « Variable Geometry in Miniature Gas Turbine for Improved Performance and Reduced Environmental Impact ». Energies 13, no 19 (8 octobre 2020) : 5230. http://dx.doi.org/10.3390/en13195230.

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A miniature gas turbine (MGT) is proposed as a promising future energy source. Increasingly stringent requirements related to harmful combustible gas emissions and a trend towards improved energy generation efficiency drive the quest for new MGT technologies. Variable geometry systems are promising due to enhanced heat management and flow control. Variable combustor cooling and dilution holes together with the variable area nozzle (VAN) system allow for the improvement of gas turbine performance and reduction in pollutant emissions. The proposed systems are based on hot-section geometry changes, in which the size of the combustion chamber holes and turbine nozzle angle can be adjusted. Component and module experimental research were performed at the Warsaw University of Technology, on an MGT test stand. A significant decrease in fuel consumption (up to 47% reduction) and harmful nitrogen oxide emission reduction (NO–by 78% and NO2–by 82%) were achieved. These results are related to combustor turbine inlet temperature (TIT) increase up to 1230 K. The tests of the variable geometry systems have also shown an impact on gas turbine power and specific fuel consumption.
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Braithwaite, C. J. R., et Giancarlo Rizzi. « The Geometry of Diagenesis ». Journal of Geological Education 42, no 2 (mars 1994) : 143–46. http://dx.doi.org/10.5408/0022-1368-42.2.143.

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Borot, Gaëtan, Samuel Grushevsky et Martin Möller. « Enumerative Geometry of Surfaces ». Oberwolfach Reports 18, no 2 (24 août 2022) : 1463–518. http://dx.doi.org/10.4171/owr/2021/28.

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Yakupov, Samat N., et Guzial Kh Nizamova. « Surface parameterization complex geometry ». Structural Mechanics of Engineering Constructions and Buildings 18, no 5 (15 décembre 2022) : 467–74. http://dx.doi.org/10.22363/1815-5235-2022-18-5-467-474.

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Among thin-walled structures, including building structures and constructions, shells of complex geometry are effective in their rigidity and strength characteristics, which are also distinguished by architectural harmony. For a wider application of shells of complex geometry, it is necessary to reliably assess their stress-strain state. In this case, an integral part of the calculation is the parametrization stage of the median surface of shells of complex geometry. There are shells of complex geometry of canonical and non-canonical forms. For shells of non-canonical shape, the median surface cannot be defined by analytical formulas. At the same time, difficulties arise at the stage of specifying (parameterizing) the shape of the median surface. The task becomes more complicated when the shell fragment has a complex contour and one or more surface points have fixed coordinates. For building structures, this is, for example, the presence of additional internal supports. Information about the spline version of the FEM is presented. Some well-known parametrization methods are noted. The approach of parametrization of a minimal surface of a complex shape bounded by four curved contours and a given (fixed) coordinate of one inner point of the surface is considered. An algorithm for constructing a spatial network, as well as determining coordinates, metric tensor components and Christoffel symbols necessary for solving parametrization problems in the spline version of the finite element method is described.
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E. Arif, Ghassan. « Intuitionistic fuzzy projective geometry ». Journal of University of Anbar for Pure Science 3, no 1 (1 avril 2009) : 143–47. http://dx.doi.org/10.37652/juaps.2009.15413.

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Favretto, Ana Paula Oliveira, et Léa Cristina Lucas Souza. « A meta-analysis over geometric modeling simplifications in ENVI-met urban climate simulation ». Ambiente Construído 19, no 1 (mars 2019) : 143–60. http://dx.doi.org/10.1590/s1678-86212019000100298.

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Abstract Environmental modelling requires, among other aspects, a description of the built geometry. However, the complexity of the urban tissue draws uncertainties about the building form and locations. Therefore, during the planning process generic simplified geometry models may be more appropriate than the detailed ones. This research shows a meta-analysis performed by comparing the results of detailed and simplified geometric models. The prediction deviations that may arise from using geometric simplifications on ENVI-met modelling were evaluated, considering the output data from different building typologies (one and ten-storey buildings) and urban scenarios (with and without internal squares). Three metrics were analysed: air temperature, wind speed, and sky view factor (SVF). These metrics were normalized between 0 and 1 for comparison and performance assessment. The results indicated that the most adequate simplification models are those that that have kept the building perimeter of the blocks unchanged in relation to the corresponding detailed models.
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Novopashin, S. A. « Magic pipe geometry ». Journal of Engineering Thermophysics 18, no 1 (mars 2009) : 57–64. http://dx.doi.org/10.1134/s181023280901007x.

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McParland, Daniel, Brett Eaton et Jordan Rosenfeld. « At-A-Station Hydraulic Geometry Simulator ». River Research and Applications 32, no 3 (23 octobre 2014) : 399–410. http://dx.doi.org/10.1002/rra.2851.

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Jang, Hyeonjoong, Andréas Meuleman, Dahyun Kang, Donggun Kim, Christian Richardt et Min H. Kim. « Egocentric scene reconstruction from an omnidirectional video ». ACM Transactions on Graphics 41, no 4 (juillet 2022) : 1–12. http://dx.doi.org/10.1145/3528223.3530074.

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Omnidirectional videos capture environmental scenes effectively, but they have rarely been used for geometry reconstruction. In this work, we propose an egocentric 3D reconstruction method that can acquire scene geometry with high accuracy from a short egocentric omnidirectional video. To this end, we first estimate per-frame depth using a spherical disparity network. We then fuse per-frame depth estimates into a novel spherical binoctree data structure that is specifically designed to tolerate spherical depth estimation errors. By subdividing the spherical space into binary tree and octree nodes that represent spherical frustums adaptively, the spherical binoctree effectively enables egocentric surface geometry reconstruction for environmental scenes while simultaneously assigning high-resolution nodes for closely observed surfaces. This allows to reconstruct an entire scene from a short video captured with a small camera trajectory. Experimental results validate the effectiveness and accuracy of our approach for reconstructing the 3D geometry of environmental scenes from short egocentric omnidirectional video inputs. We further demonstrate various applications using a conventional omnidirectional camera, including novel-view synthesis, object insertion, and relighting of scenes using reconstructed 3D models with texture.
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Ebrahim, Hesham, et Robert Dominy. « The Effect of Afterbody Geometry on Passenger Vehicles in Platoon ». Energies 14, no 22 (12 novembre 2021) : 7553. http://dx.doi.org/10.3390/en14227553.

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It is well known that platoons of closely spaced passenger cars can reduce their aerodynamic drag yielding substantial savings in energy consumption and reduced emissions as a system. Most published research has focused on platoons of identical vehicles which can arguably be justified by some evidence that geometric variety has little to no effect on the overall flow characteristics in platoons of three vehicles or more. It is known that much of the aerodynamic benefit from platooning is gained by the leading two cars, so operating as vehicle pairs could potentially achieve similar environmental benefits whilst addressing many of the practical challenges associated with the safe operation of long platoons on public roads. However, it has been reported that unlike long platoons, the effect of geometry and arrangement is critical if the drag reduction of a pair is to be optimised. This paper describes a parametric study based on three geometric variants of the popular DrivAer model with different combinations and spacings. It is confirmed that vehicle geometry crucially affects the results with the best combinations matching those of long platoons and others creating a net drag increase.
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