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| 1 | Investigating approaches to improving rendering performance of 3D city models on mobile devices显示文摘Three-dimensional(3D)city models have uses including on-site validation of utility infrastructure,support for augmented reality,personalized tourist information,real estate sales,and 3D pedestrian navigation.Increasingly,such applications are deployed on mobile devices,whose use is becoming more prevalent.Tablet devices are used for more professional use requiring larger screens,mobile phones for more casual users.However,many 3D city models contain hundreds of buildings,which in turn results in performance issues when attempting to visualize such models on these devices.Two issues can be identified as contributory factors-the lower specification of the mobile device itself when compared with desktop machines and the lower bandwidth network between the device and the server(3G mobile or Wi-Fi).Both of these can be addressed by reducing the volume of data in the model.To achieve this,we generalize a 2D data-set(using aggregation and simplification)and then extrude the generalized 2D maps to 3D.This minimizes the number of buildings to be transmitted over the network and processed by the on-board graphics engine.To additionally address the bandwidth issue,we make use of topological data structuring to build and transmit a minimal description for each building.Combining these approaches,we compare the results obtained for generalized and un-generalized data-sets,on a tablet and mobile device.A performance increase of between 7 and 9 times is observed. | Claire ELLUL Julia ALTENBUCHNER | 2014 | Geo-Spatial Information Science2014，17，2： | 2 |
| 2 | Directed evolution of an esterase: Screening of enzyme libraries based on pH-indicators and a growth assay显示文摘 | Bornscheuer U T Altenbuchner J Meyer H H | 1999 | Bioorganic & Medicinal Chemistry1999，7，： | 1 |
| 3 | Directed evolution of an esterase:screening of enzyme libraries based on pH-indicators and a growth assay显示文摘 | Altenbuchner J Meyer HH | 1999 | Bioorganic & Medicinal Chemistry1999，7，： | 1 |
| 4 | Directed evolution of an esterase:screening of enzyme libraries based on pH-indicators and a growth assay显示文摘 | Altenbuchner J Meyer HH | 1999 | Bioorganic & Medicinal Chemistry1999，7，： | 1 |
| 5 | Isolation and identification of Streptomyces fradiae SU-1 from Thailand and protoplast transformation with the chitinase B gene from Nocardiopsis prasina OPC-131显示文摘 | Apichaisataienchote B Altenbuchner J Buchenauer H | 2005 | Curr Microbiol2005，51，： | 1 |
| 6 | Genetic instability of the Streptomyces chromosome 显示文摘 | VOLFF J N ALTENBUCHNER J | 1998 | Molecular Microbiology1998，27，： | 1 |
| 7 | Development of a method for markerless gene deletion in pseudomonas putida显示文摘 | Graf N Altenbuchner J | 2011 | Appl Environ Microbiol2011，15，77： | 1 |
| 8 | Microbial hydantoinases-industrial enzymes from the origin of life 显示文摘 | Syldatk C May O Altenbuchner J Mattes R Siemann M | 1991 | Appl Microbiol Biotechnol1991，51，： | 1 |
| 9 | Hydantoinases and related enzymes as biocatalysts for the synthesis of unnatural chiral amino acids显示文摘 | Altenbuchner J Siemann M H Syldatk C | 2001 | Current Opinion in Biotechnology2001，12，： | 1 |
| 10 | In?vivo and in?vitro studies on the carotenoid cleavage oxygenases from S phingopyxis?alaskensis ?? RB 2256 and P lesiocystis?pacifica ? SIR ‐1 revealed their substrate specificities and non‐retinal‐forming cleavage activities显示文摘 | Jana Hoffmann Judit Bóna‐Lovász Holger Beuttler Josef Altenbuchner | 2012 | FEBS J2012，，20： | 1 |
| 11 | 显示文摘 | Syldatk C May O Altenbuchner J | 1999 | Appl Microbiol Biotechnol1999，51，3： | 1 |
| 12 | Directed evolution of an esterase: screening of enzyme libraries based on pH-indicators and a growth assay 显示文摘 | Bornscheuer U T Altenbuchner J Meyer H H | 1999 | Bioorg Med Chem1999，7，10： | 1 |
| 13 | Nuclei acid and protein elimination during the sugar manufacturing process of conventional and transgenic sugar beets显示文摘 | Klien J Altenbuchner J Mattes R | 1998 | Journal of Biotechnology1998，60，： | 1 |
| 14 | Positive selection vectors based on palindromic DNA sequences显示文摘 | Altenbuchner J Viell P Pelletier I | 1992 | Methods Enzymol1992，216，： | 1 |
| 15 | DNA amplification and an unstable arginine gene in Streptomyces lividans 66显示文摘 | Altenbuchner J Cullum J | 1984 | Mol Gen Genet1984，195，12： | 1 |
| 16 | Directed evolution of an esterase:screening of enzyme libraries based on pH-indicators and a growth assay显示文摘 | Bornscheuer UT Altenbuchner J Meyer HH | 1999 | Bioorganic and Medicinal Chemistry1999，7，10： | 1 |
| 17 | Microbial Hydantoinases-Industrial Enzymes from the Origin of Life?显示文摘 | Syltatk C May O Altenbuchner J | 1999 | Appl Microbiol Biotechnol1999，51，： | 1 |
| 18 | Nucleic acid and protein elimination during the sugar manufacturing process of conventional and transgenic sugar beets 显示文摘 | Klein J Altenbuchner J Mattes R | 1998 | Journal of Biotechnology1998，60，： | 1 |
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