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2D-3D fusion for layer decomposition of urban facades
2011
2011 International Conference on Computer Vision
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We present a method for fusing two acquisition modes, 2D photographs and 3D LiDAR scans, for depth-layer decomposition of urban facades. ...
We decompose the input photographs into rectangular planar fragments and diffuse depth information from the corresponding 3D scan onto the fragments by solving a multi-label assignment problem. ...
We would like to thank Guowei Wan for initial experiments on this project and Dror Aiger for inspiring discussions. This work was supported in part by NSFC (60902104, 61025012, 61003190 ...
doi:10.1109/iccv.2011.6126329
dblp:conf/iccv/LiZSCCM11
fatcat:nn7hwjrpcrcqxcvxmzqhkbs56a
Transit Frequency Setting Problem with Demand Uncertainty
[article]
2022
arXiv
pre-print
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To address the computation complexity in both extended models under large-scale demand matrices, a Bender decomposition algorithm and two dimension reduction techniques are designed. ...
Public transit systems are the backbone of efficient and sustainable urban mobility systems in the era of urbanization. ...
There are several applications for applying SP or RO techniques to solving urban mobility problems. For transit systems, Yan et al. ...
arXiv:2204.12666v1
fatcat:orfjafiw2nhunpwwmaq6zcblty
Grammar-based 3D facade segmentation and reconstruction
2012
Computers & graphics
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We present an algorithm for reconstruction of 3D polygonal models from scanned urban facades. ...
Recent advances in scanning technologies allow large-scale scanning of urban scenes. ...
modeling techniques. ...
doi:10.1016/j.cag.2012.02.003
fatcat:hsptrymrgzdq3ip27pvmfsanhq
Determinant of Income Inequality in Ethiopia: Regression Based Inequality Decomposition
2019
European Business & Management
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The employment, the occupation and the race are also having a great contribution for the inequality of income. ...
This studies focusing on investigating the determinant of inequality in Ethiopia by using the raw data collected from central Stastical authority based on the regression decomposition of field's methodology ...
On the other hand, for the other urban category, a three stage stratified sampling technique was carried out. ...
doi:10.11648/j.ebm.20190503.12
fatcat:mdii2ppml5ht5bqohxsttasej4
The cityseer Python package for pedestrian-scale network-based urban analysis
[article]
2021
arXiv
pre-print
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It is underpinned by network-based methods developed from the ground-up for localised urban analysis at the pedestrian scale to provide contextually specific metrics for any given street-front location ...
Aggregations are computed dynamically -- directly over the street network while taking the direction of approach into account -- and can optionally incorporate spatial impedances and network decomposition ...
Summary The cityseer-api Python package addresses a range of issues specific to computational workflows for urban analytics from an urbanist's point of view and contributes a combination of techniques ...
arXiv:2106.15314v2
fatcat:xq5my2er2zfwtk5rqmuhxd26ci
Upgrading Wastewater Treatment Plant to Obtain Drinking Water
2019
OALib
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Evidently, there is an additional cost for these sophisticated techniques to pay for the better future of the humankind. ...
only considered as the final issue in the case of hard shortage situations for security reasons. ...
Most importantly, these comparative examinations concluded that:
1) Consolidated advanced urban wastewater treatment techniques, to be spe-
cific AC adsorption, ozonation, and filtration by nanofiltration ...
doi:10.4236/oalib.1105959
fatcat:bnfdubvpdjbqnl77d5s5utfmii
Monitoring tropical peat related settlement using ISBAS InSAR, Kuala Lumpur International Airport (KLIA)
2018
Engineering Geology
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This pressure has led to sites on tropical peatland previously considered unsuitable for development to be revisited. ...
One such site, the KLIA2 terminal and runway, Kuala Lumpur International Airport which opened in May 2014 at a cost of 3.6 billion MYR has been beset by well documented subsidence problems. ...
Thanks are also due to Henk Pieter Sterk, Martha Ledger and Geomatic Ventures Ltd. for assistance in preparing Sentinel I data for ISBAS processing and analysis. ...
doi:10.1016/j.enggeo.2018.07.015
fatcat:l2y4ntq3c5dlvjxl2ramvuoe4u
Accounting for Inequality in India: Evidence from Household Expenditures
2010
World Development
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It is crucial to point out that decomposition techniques provide a description of how various household characteristics are related to inequality. Decomposition results do not imply causation. ...
This problem can be alleviated by keeping the analysis poverty and inequality of urban and rural areas separate. ...
Its main instruments for helping its developing member countries are policy dialogue, loans, equity investments, guarantees, grants, and technical assistance. ...
doi:10.1016/j.worlddev.2009.11.014
fatcat:tkn3ddh3tnffvc6tjecrsu2cxe
How Does Environmental Regulation Affect Carbon Emissions? —Evidence from China
2019
Journal of Geoscience and Environment Protection
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Based on the decomposition results, the effects of different environmental regulation on carbon emission increment and its decomposition effect were studied by using multiple regression methods. ...
In this paper, the increment of CO 2 emissions from 285 prefecture-level cities in China from 2004 to 2013 is decomposed into scale effect, composition effect and technique effect. ...
Third, in terms of technique effects, environmental regulations for CO 2 have significantly reduced urban carbon emissions, while environmental regulations for SO 2 have increased urban carbon emissions ...
doi:10.4236/gep.2019.711012
fatcat:dgg7sx6zpzecteto32puhjlp6m
Shrinking Large-Scale Population-Projection Models by Aggregation and Decomposition
1976
Environment and planning A
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In such instances, a more efficient and effective shrinking technique often can be developed using decomposition methods. ...
Decompositions of large-scale problems generally proceed in two stages. ...
doi:10.1068/a080515
fatcat:emgqt64pjjfhxi2dd5yudlv5k4
Some geotechnical aspects of bioreactor landfills
2011
Periodica polytechnica. Civil engineering
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Our model divided the waste body into five layers according to the degree of decomposition. Three different geometries were simulated. ...
degradation · factor of safety · slope stability · Plaxis · Geoslope Acknowledgement The support of the National Research Fund Jedlik Ányos NKFP B1 2006 08 and the Norwegian research fund HU-0121 was used for ...
In bioreactor landfills the time needed for total consolidation decreases while the amount and the quality of biogas increases. ...
doi:10.3311/pp.ci.2011-1.05
fatcat:ae4fgh3e4ra7fbakwylhvcmnae
Identifying Population Movements with Non-Negative Matrix Factorization from Wi-Fi User Counts in Smart and Connected Cities
[article]
2021
arXiv
pre-print
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Non-Negative Matrix Factorization (NMF) is a valuable matrix factorization technique which produces a "parts-based" decomposition of data sets. ...
Wi-Fi user counts are a privacy-preserving indicator of population movements in smart and connected urban environments. ...
CONCLUSION NMF was chosen as a decomposition for this data due to its high interpretability. ...
arXiv:2111.10459v1
fatcat:ynjwl3swzfbydjz4wpsoaletqy
Modelling city logistics using recent innovative technologies
2020
Transportation Research Procedia
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Advances in autonomous and electric freight vehicles have good potential for improving the efficiency and sustainability of urban freight systems. ...
Advances in autonomous and electric freight vehicles have good potential for improving the efficiency and sustainability of urban freight systems. ...
They proposed a large neighbourhood search-based metaheuristic to solve the E2EVRP and an exact mathematical programming algorithm, which uses a decomposition technique and problem-tailored pricing algorithms ...
doi:10.1016/j.trpro.2020.03.157
fatcat:a6xf7wtzszbclfzmeorv3aqrx4
Adaptive partitioning of urban facades
2011
Proceedings of the 2011 SIGGRAPH Asia Conference on - SA '11
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Abstract Automatically discovering high-level facade structures in unorganized 3D point clouds of urban scenes is crucial for applications like digitalization of real cities. ...
However, this problem is challenging due to poor-quality input data, contaminated with severe missing areas, noise and outliers. ...
Acknowledgements We thank the anonymous reviewers for their constructive comments. The LiDAR scans in Figure 1 ...
doi:10.1145/2070752.2024218
fatcat:dhkwodpnyncardpwxnlagds74e
Adaptive partitioning of urban facades
2011
Proceedings of the 2011 SIGGRAPH Asia Conference on - SA '11
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Abstract Automatically discovering high-level facade structures in unorganized 3D point clouds of urban scenes is crucial for applications like digitalization of real cities. ...
However, this problem is challenging due to poor-quality input data, contaminated with severe missing areas, noise and outliers. ...
Acknowledgements We thank the anonymous reviewers for their constructive comments. The LiDAR scans in Figure 1 ...
doi:10.1145/2024156.2024218
fatcat:dq65yvgdyvg3nfgvg6ajyz5ghu
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