Mechanism Investigation of three-dimensional porous A-site substituted La1-xCoxFeO3 catalysts for simultaneous oxidation of NO and toluene with H2O

The main objective of site characterization is the prediction of in situ soil properties at any half-space point at a site based on limited tests. In this study, the Support Vector Machine (SVM) has been used to develop a three dimensional site characterization model for Bangalore, India based on large amount of Standard Penetration Test. SVM is a novel type of learning machine based on statistical learning theory, uses regression technique by introducing ε-insensitive loss function. The database consists of 766 boreholes, with more than 2700 field SPT values () spread over 220 sq km area of Bangalore. The model is applied for corrected () values. The three input variables (, , and , where , , and are the coordinates of the Bangalore) were used for the SVM model. The output of SVM was the data. The results presented in this paper clearly highlight that the SVM is a robust tool for site characterization. In this study, a sensitivity analysis of SVM parameters (σ, , and ε) has been also presented.

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Understanding and Conserving Fortified and Difficult to Access Architectures through Digital Survey

Advances in Geospatial Technologies - Handbook of Research on Emerging Digital Tools for Architectural Surveying, Modeling, and Representation ◽

10.4018/978-1-4666-8379-2.ch022 ◽

2015 ◽

pp. 654-685 ◽

Cited By ~ 1

Author(s):

Mariateresa Galizia ◽

Alessandro Lo Faro ◽

Cettina Santagati

Keyword(s):

Geometric Analysis ◽

Three Dimensional ◽

Second Step ◽

Cylindrical Shape ◽

Dimensional Model ◽

Three Dimensional Model ◽

Unique Case ◽

Virtual Reconstruction ◽

A Site ◽

Digital Survey

In this paper we propose a multidisciplinary approach concerning the tower of Mongialino in Mineo (Sicily), which is a unique case in Sicily of a cylindrical tower with an inner cylindrical nucleus. The vestiges of the dungeon rise on a rock promontory that dominates the valley of Margi, a site that has great landscape and territorial value. The building is affected by important collapses and lesions, and urgently requires a safeguard intervention that requires a deep knowledge and understanding of the construction. The first step of this process is a suitable documentation and representation of the cylindrical shape and its towering position. The peculiarity of the object requires the integrated use of current technologies of surveying able to provide a metrically-accurate three-dimensional model. The second step is the critic reading of the technological, typological and material elements that constitutes the constructive apparatus of the building (masonry, ribs, ring-like vault), and the geometric analysis addressed at the virtual reconstruction of the original shape.

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A Permutation Technique for the Spatial Analysis of the Distribution of Artifacts into Classes

American Antiquity ◽

10.2307/279656 ◽

1980 ◽

Vol 45 (1) ◽

pp. 55-59 ◽

Cited By ~ 9

Author(s):

Kenneth J. Berry ◽

Kenneth L. Kvamme ◽

Paul W. Mielke

Keyword(s):

Spatial Analysis ◽

Permutation Test ◽

Dimensional Space ◽

Three Dimensional ◽

Exact Method ◽

Grid Data ◽

Permutation Technique ◽

A Site ◽

Three Dimensional Space

A permutation test for assessing intrasite patterning of artifact distributions in archaeological space is presented. This test requires none of the usual assumptions about the data; permits either exact locational or counts/grid data in one-, two-, or three-dimensional space; and provides an exact method for testing any hypothesis concerning the nonrandom allocation of artifacts into classes within a site.

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Three-Dimensional Ocular Kinematics During Eccentric Rotations: Evidence for Functional Rather Than Mechanical Constraints

Journal of Neurophysiology ◽

10.1152/jn.01137.2002 ◽

2003 ◽

Vol 89 (5) ◽

pp. 2685-2696 ◽

Cited By ~ 16

Author(s):

Dora E. Angelaki

Keyword(s):

Extraocular Muscle ◽

Three Dimensional ◽

Peripheral Retina ◽

Eye Position ◽

Image Stabilization ◽

3D Kinematics ◽

Mechanical Constraints ◽

Rotation Axes ◽

A Site ◽

Eye Velocity

Previous studies have reported that the translational vestibuloocular reflex (TVOR) follows a three-dimensional (3D) kinematic behavior that is more similar to visually guided eye movements, like pursuit, rather than the rotational VOR (RVOR). Accordingly, TVOR rotation axes tilted with eye position toward an eye-fixed reference frame rather than staying relatively fixed in the head like in the RVOR. This difference arises because, contrary to the RVOR where peripheral image stability is functionally important, the TVOR like pursuit and saccades cares to stabilize images on the fovea. During most natural head and body movements, both VORs are simultaneously activated. In the present study, we have investigated in rhesus monkeys the 3D kinematics of the combined VOR during yaw rotation about eccentric axes. The experiments were motivated by and quantitatively compared with the predictions of two distinct hypotheses. According to the first (fixed-rule) hypothesis, an eye-position-dependent torsion is computed downstream of a site for RVOR/TVOR convergence, and the combined VOR axis would tilt through an angle that is proportional to gaze angle and independent of the relative RVOR/TVOR contributions to the total eye movement. This hypothesis would be consistent with the recently postulated mechanical constraints imposed by extraocular muscle pulleys. According to the second (image-stabilization) hypothesis, an eye-position-dependent torsion is computed separately for the RVOR and the TVOR components, implying a processing that takes place upstream of a site for RVOR/TVOR convergence. The latter hypothesis is based on the functional requirement that the 3D kinematics of the combined VOR should be governed by the need to keep images stable on the fovea with slip on the peripheral retina being dependent on the different functional goals of the two VORs. In contrast to the fixed-rule hypothesis, the data demonstrated a variable eye-position-dependent torsion for the combined VOR that was different for synergistic versus antagonistic RVOR/TVOR interactions. Furthermore, not only were the eye-velocity tilt slopes of the combined VOR as much as 10 times larger than what would be expected based on extraocular muscle pulley location, but also eye velocity during antagonistic RVOR/TVOR combinations often tilted opposite to gaze. These results are qualitatively and quantitatively consistent with the image-stabilization hypothesis, suggesting that the eye-position-dependent torsion is computed separately for the RVOR and the TVOR and that the 3D kinematics of the combined VOR are dependent on functional rather than mechanical constraints.

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Integrating Virtual Reality and GIS Tools for Geological Mapping, Data Collection and Analysis: An Example from the Metaxa Mine, Santorini (Greece)

Applied Sciences ◽

10.3390/app10238317 ◽

2020 ◽

Vol 10 (23) ◽

pp. 8317

Author(s):

Varvara Antoniou ◽

Fabio Luca Bonali ◽

Paraskevi Nomikou ◽

Alessandro Tibaldi ◽

Paraskevas Melissinos ◽

...

Keyword(s):

Virtual Reality ◽

Data Collection ◽

Industrial Development ◽

Three Dimensional ◽

Geological Mapping ◽

Gis Tools ◽

Data Collection And Analysis ◽

Volcanic Processes ◽

Gis Environment ◽

A Site

In the present work we highlight the effectiveness of integrating different techniques and tools for better surveying, mapping and collecting data in volcanic areas. We use an Immersive Virtual Reality (IVR) approach for data collection, integrated with Geographic Information System (GIS) analysis in a well-known volcanological site in Santorini (Metaxa mine), a site where volcanic processes influenced the island’s industrial development, especially with regard to pumice mining. Specifically, we have focused on: (i) three-dimensional (3D) high-resolution IVR scenario building, based on Structure from Motion photogrammetry (SfM) modeling; (ii) subsequent geological survey, mapping and data collection using IVR; (iii) data analysis, e.g., calculation of extracted volumes, as well as production of new maps in a GIS environment using input data directly from the IVR survey; and finally, (iv) presentation of new outcomes that highlight the importance of the Metaxa Mine as a key geological and volcanological geosite.

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Flow in the Stenotic Carotid Bifurcation

Advances in Bioengineering ◽

10.1115/imece2002-32525 ◽

2002 ◽

Cited By ~ 1

Author(s):

Stanley A. Berger ◽

Vitaliy L. Rayz

Keyword(s):

Plaque Rupture ◽

Three Dimensional ◽

Carotid Bifurcation ◽

Atherosclerotic Plaques ◽

Flow Conditions ◽

Artery Wall ◽

Plaque Development ◽

Irregular Geometries ◽

A Site ◽

Realistic Geometries

The carotid artery bifurcation is prone to the development of atherosclerotic plaques, and is a site where the consequences of this development can be severe. The most immediate effects are changes in lumenal cross-section, volumetric blood flow, and forces on the wall. The end result may be plaque rupture, possibly resulting in a stroke. Plaque development, and plaque rupture, are likely both strongly influenced by the changes of the shear stress, and possibly normal stress, at the artery wall [1]. Numerical simulations of the flow in the carotid bifurcation can elucidate the influence of the flow on the plaque and vice versa. The irregular geometries of severely stenotic vessels make numerical modeling of these flows particularly challenging [2, 3]. We describe simulations in fully three-dimensional, realistic geometries under steady and pulsatile flow conditions.

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trans-Tetraaquabis(pyridine-3-carboxylate-κN)nickel(II)

Acta Crystallographica Section E Structure Reports Online ◽

10.1107/s1600536800018742 ◽

2000 ◽

Vol 57 (1) ◽

pp. m9-m11 ◽

Cited By ~ 7

Author(s):

Stuart R. Batten ◽

Alexander R. Harris

Keyword(s):

Hydrogen Bonding ◽

Three Dimensional ◽

Title Complex ◽

Mirror Plane ◽

Carboxylate Groups ◽

Dimensional Network ◽

A Site ◽

Water Ligands

The title complex, [Ni(C6H4NO2)2(H2O)4], consists of an Ni atom coordinated to twotranspyridinecarboxylate ligands, coordinated through the N atoms, and four water ligands. The Ni atom lies on a site of 2/msymmetry, and the pyridinecarboxylate ligand lies on a mirror plane. Extensive inter-complex hydrogen bonding occurs between the water ligands and the carboxylate groups, resulting in a three-dimensional network.

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The crystal and molecular stucture of μ-Bis(diphenylarsino)methanehexacarbonyldi-μ-chloro-dirhenium(I)-n-hexane (4/1)

Australian Journal of Chemistry ◽

10.1071/ch9751201 ◽

1975 ◽

Vol 28 (6) ◽

pp. 1201 ◽

Cited By ~ 10

Author(s):

CJ Commons ◽

BF Hoskins

Keyword(s):

Least Squares Method ◽

Crystal And Molecular Structure ◽

Three Dimensional ◽

X Ray Diffraction ◽

Rhenium Atom ◽

X Ray ◽

Carbonyl Ligands ◽

Rhenium Complex ◽

Metal Atoms ◽

A Site

The crystal and molecular structure of the n-hexane solvate of μ- bis(diphenylarsino)methane-hexacarbonyldi-μ-chloro-dirhenium(I), Re2(CO)6(Ph2AsCH2AsPh2)Cl2, has been determined by three-dimensional X-ray diffraction methods. The complex crystallizes in the space group Pī with a 15.763(1), b 19.077(1), c 12.233(1) Ǻ and α 88.745(10), β 110.506(5), γ 92.900(6)�. The structure was solved by conventional Patterson and Fourier methods and refined by a block-diagonal least- squares method to R and Rw of 0.045 and 0.054, respectively, for 7061 independent statistically significant reflections collected by counter methods. The crystal consists of discrete molecules of the complex and n-hexane held together by van der Waals forces. There are two molecules of the dirhenium complex in the crystallographic asymmetric unit with the n-hexane molecule situated about a site of symmetry ī. The binuclear rhenium complex contains bridging halogen atoms and a bridging diarsine ligand. Three carbonyl ligands are also bonded to each rhenium atom, giving the metal atoms approximately octahedral environments. The average Re-As, Re-Cl, and Re-C bond lengths are 2.58, 2.52, and 1.89 Ǻ respectively.

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The first uranyl complexes with valerate ions

Acta Crystallographica Section C Crystal Structure Communications ◽

10.1107/s0108270113014832 ◽

2013 ◽

Vol 69 (7) ◽

pp. 721-726 ◽

Cited By ~ 16

Author(s):

Anton V. Savchenkov ◽

Anna V. Vologzhanina ◽

Larisa B. Serezhkina ◽

Denis V. Pushkin ◽

Viktor N. Serezhkin

Keyword(s):

Three Dimensional ◽

Uranyl Complexes ◽

X Ray ◽

Alkyl Groups ◽

Neutral Compound ◽

Homologous Compounds ◽

Composition And Structure ◽

Ft Ir ◽

A Site ◽

Ir Spectroscopic

FT–IR spectroscopy and single-crystal X-ray structure analysis were used to characterize the discrete neutral compound diaquadioxidobis(n-valerato-κ2O,O′)uranium(VI), [UO2(C4H9COO)2(H2O)2], (I), and the ionic compound potassium dioxidotris(n-valerato-κ2O,O′)uranium(VI), K[UO2(C4H9COO)3], (II). The UVIcation in neutral (I) is at a site of 2/msymmetry. Potassium salt (II) has two U centres and two K+cations residing on twofold axes, while a third independent formula unit is on a general position. The ligands in both compounds were found to suffer severe disorder. The FT–IR spectroscopic results agree with the X-ray data. The composition and structure of the ionic potassium uranyl valerate are similar to those of previously reported potassium uranyl complexes with acetate, propionate and butyrate ligands. Progressive lengthening of the alkyl groups in these otherwise similar compounds was found to have an impact on their structures, including on the number of independent U and K+sites, on the coordination modes of some of the K+centres and on the minimum distances between U atoms. The evolution of the KUO6frameworks in the four homologous compounds is analysed in detail, revealing a new example of three-dimensional topological isomerism in coordination compounds of UVI.

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