default search action
Yadong Dong
Person information
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
Journal Articles
- 2024
- [j38]Xiaohan Wang, Jing Li, Hu Zhang, Qinhuo Liu, Liangyun Liu, Chenpeng Gu, Faisal Mumtaz, Jing Zhao, Yadong Dong, Junhua Bai, Tianjia Chu, Chang Liu, Li Guan, Wenjiang Huang:
Intercomparison and validation of five existing leaf chlorophyll content products over China. Int. J. Appl. Earth Obs. Geoinformation 130: 103930 (2024) - [j37]Tianjia Chu, Jing Li, Jing Zhao, Chenpeng Gu, Faisal Mumtaz, Yadong Dong, Hu Zhang, Qinhuo Liu:
Regional Analysis of Dominant Factors Influencing Leaf Chlorophyll Content in Complex Terrain Regions Using a Geographic Statistical Model. Remote. Sens. 16(3): 479 (2024) - [j36]Hu Zhang, Qianrui Xi, Junqin Xie, Xiaoning Zhang, Lei Chen, Yi Lian, Hongtao Cao, Yan Liu, Lei Cui, Yadong Dong:
Directional Applicability Analysis of Albedo Retrieval Using Prior BRDF Knowledge. Remote. Sens. 16(15): 2744 (2024) - 2023
- [j35]Chenpeng Gu, Jing Li, Qinhuo Liu, Hu Zhang, Liangyun Liu, Faisal Mumtaz, Yadong Dong, Jing Zhao, Xiaohan Wang, Chang Liu:
Retrieving decametric-resolution leaf chlorophyll content from GF-6 WFV by assessing the applicability of red-edge vegetation indices. Comput. Electron. Agric. 215: 108455 (2023) - [j34]Jing Zhao, Jing Li, Qinhuo Liu, Baodong Xu, Xihan Mu, Yadong Dong:
Generation of a 16 m/10-day fractional vegetation cover product over China based on Chinese GaoFen-1 observations: method and validation. Int. J. Digit. Earth 16(2): 4229-4246 (2023) - [j33]Faisal Mumtaz, Jing Li, Qinhuo Liu, Aqil Tariq, Arfan Arshad, Yadong Dong, Jing Zhao, Barjeece Bashir, Hu Zhang, Chenpeng Gu, Chang Liu:
Impacts of Green Fraction Changes on Surface Temperature and Carbon Emissions: Comparison under Forestation and Urbanization Reshaping Scenarios. Remote. Sens. 15(3): 859 (2023) - [j32]Chang Liu, Jing Li, Qinhuo Liu, Baodong Xu, Yadong Dong, Jing Zhao, Faisal Mumtaz, Chenpeng Gu, Hu Zhang:
Global Comparison of Leaf Area Index Products over Water-Vegetation Mixed Heterogeneous Surface Network (HESNet-WV). Remote. Sens. 15(5): 1337 (2023) - [j31]Hu Zhang, Xiaoning Zhang, Lei Cui, Yadong Dong, Yan Liu, Qianrui Xi, Hongtao Cao, Lei Chen, Yi Lian:
Enhancing Leaf Area Index Estimation with MODIS BRDF Data by Optimizing Directional Observations and Integrating PROSAIL and Ross-Li Models. Remote. Sens. 15(23): 5609 (2023) - [j30]Jing Zhao, Jing Li, Qinhuo Liu, Yadong Dong, Li Li, Hu Zhang:
Assessment of Forest Ecosystem Variations in the Lancang-Mekong Region by Remote Sensing from 2010 to 2020. Sensors 23(22): 9038 (2023) - [j29]Yadong Dong, Jing Li, Ziti Jiao, Qinhuo Liu, Jing Zhao, Baodong Xu, Hu Zhang, Zhaoxing Zhang, Chang Liu, Yuri Knyazikhin, Ranga B. Myneni:
A Method for Retrieving Coarse-Resolution Leaf Area Index for Mixed Biomes Using a Mixed-Pixel Correction Factor. IEEE Trans. Geosci. Remote. Sens. 61: 1-17 (2023) - 2022
- [j28]Wentao Yu, Jing Li, Qinhuo Liu, Jing Zhao, Yadong Dong, Cong Wang, Shangrong Lin, Xinran Zhu, Hu Zhang:
Spatial-Temporal Prediction of Vegetation Index With Deep Recurrent Neural Networks. IEEE Geosci. Remote. Sens. Lett. 19: 1-5 (2022) - [j27]Jing Zhao, Jing Li, Qinhuo Liu, Zhaoxing Zhang, Yadong Dong:
Comparative Study of Fractional Vegetation Cover Estimation Methods Based on Fine Spatial Resolution Images for Three Vegetation Types. IEEE Geosci. Remote. Sens. Lett. 19: 1-5 (2022) - [j26]Xiaoning Zhang, Ziti Jiao, Changsen Zhao, Jing Guo, Zidong Zhu, Zhigang Liu, Yadong Dong, Siyang Yin, Hu Zhang, Lei Cui, Sijie Li, Yidong Tong, Chenxia Wang:
Evaluation of BRDF Information Retrieved from Time-Series Multiangle Data of the Himawari-8 AHI. Remote. Sens. 14(1): 139 (2022) - [j25]Hu Zhang, Mengzhuo Zhao, Ziti Jiao, Yi Lian, Lei Chen, Lei Cui, Xiaoning Zhang, Yan Liu, Yadong Dong, Da Qian, Yiting Wang, Juan Li, Tiejun Cui:
Reflectance Anisotropy from MODIS for Albedo Retrieval from a Single Directional Reflectance. Remote. Sens. 14(15): 3627 (2022) - [j24]Siyang Yin, Ziti Jiao, Yadong Dong, Xiaoning Zhang, Lei Cui, Rui Xie, Jing Guo, Sijie Li, Zidong Zhu, Yidong Tong, Chenxia Wang:
Evaluation of the Consistency of the Vegetation Clumping Index Retrieved from Updated MODIS BRDF Data. Remote. Sens. 14(16): 3997 (2022) - [j23]Lei Cui, Mei Sun, Ziti Jiao, Jongmin Park, Muge Agca, Hu Zhang, Long He, Yiqun Dai, Yadong Dong, Xiaoning Zhang, Yi Lian, Lei Chen, Kaiguang Zhao:
Effectiveness of the Reconstructed MODIS Typical-Angle Reflectances on Forest Biomass Estimation. Remote. Sens. 14(21): 5475 (2022) - [j22]Xinran Zhu, Jing Li, Qinhuo Liu, Wentao Yu, Songze Li, Jing Zhao, Yadong Dong, Zhaoxing Zhang, Hu Zhang, Shangrong Lin:
Use of a BP Neural Network and Meteorological Data for Generating Spatiotemporally Continuous LAI Time Series. IEEE Trans. Geosci. Remote. Sens. 60: 1-14 (2022) - 2021
- [j21]Wentao Yu, Jing Li, Qinhuo Liu, Jing Zhao, Yadong Dong, Xinran Zhu, Shangrong Lin, Hu Zhang, Zhaoxing Zhang:
Gap Filling for Historical Landsat NDVI Time Series by Integrating Climate Data. Remote. Sens. 13(3): 484 (2021) - [j20]Lei Cui, Ziti Jiao, Kaiguang Zhao, Mei Sun, Yadong Dong, Siyang Yin, Xiaoning Zhang, Jing Guo, Rui Xie, Zidong Zhu, Sijie Li, Yidong Tong:
Retrieving Forest Canopy Elements Clumping Index Using ICESat GLAS Lidar Data. Remote. Sens. 13(5): 948 (2021) - [j19]Yang Li, Ziti Jiao, Kaiguang Zhao, Yadong Dong, Yuyu Zhou, Yelu Zeng, Haiqing Xu, Xiaoning Zhang, Tongxi Hu, Lei Cui:
Influence of Varying Solar Zenith Angles on Land Surface Phenology Derived from Vegetation Indices: A Case Study in the Harvard Forest. Remote. Sens. 13(20): 4126 (2021) - [j18]Hu Zhang, Jing Li, Qinhuo Liu, Yadong Dong, Songze Li, Zhaoxing Zhang, Xinran Zhu, Liangyun Liu, Jing Zhao:
Estimating Leaf Area Index with Dynamic Leaf Optical Properties. Remote. Sens. 13(23): 4898 (2021) - [j17]Xiaoning Zhang, Ziti Jiao, Changsen Zhao, Siyang Yin, Lei Cui, Yadong Dong, Hu Zhang, Jing Guo, Rui Xie, Sijie Li, Zidong Zhu, Yidong Tong:
Retrieval of Leaf Area Index by Linking the PROSAIL and Ross-Li BRDF Models Using MODIS BRDF Data. Remote. Sens. 13(23): 4911 (2021) - [j16]Yaxuan Chang, Ziti Jiao, Xiaoning Zhang, Linlu Mei, Yadong Dong, Siyang Yin, Lei Cui, Anxin Ding, Jing Guo, Rui Xie, Zidong Zhu, Sijie Li:
Assessment of Improved Ross-Li BRDF Models Emphasizing Albedo Estimates at Large Solar Angles Using POLDER Data. IEEE Trans. Geosci. Remote. Sens. 59(12): 9968-9986 (2021) - 2020
- [j15]Lei Cui, Ziti Jiao, Kaiguang Zhao, Mei Sun, Yadong Dong, Siyang Yin, Yang Li, Yaxuan Chang, Jing Guo, Rui Xie, Zidong Zhu, Sijie Li:
Retrieval of Vertical Foliage Profile and Leaf Area Index Using Transmitted Energy Information Derived from ICESat GLAS Data. Remote. Sens. 12(15): 2457 (2020) - [j14]Yadong Dong, Yongqi Sun, Chao Qin, Weiguo Zhu:
EPMDA: Edge Perturbation Based Method for miRNA-Disease Association Prediction. IEEE ACM Trans. Comput. Biol. Bioinform. 17(6): 2170-2175 (2020) - [j13]Xiaoning Zhang, Jing Guo, Rui Xie, Ziti Jiao, Yadong Dong, Tao He, Anxin Ding, Siyang Yin, Hu Zhang, Lei Cui, Yaxuan Chang:
Development of the Direct-Estimation Albedo Algorithm for Snow-Free Landsat TM Albedo Retrievals Using Field Flux Measurements. IEEE Trans. Geosci. Remote. Sens. 58(3): 1550-1567 (2020) - 2019
- [j12]Anxin Ding, Ziti Jiao, Yadong Dong, Xiaoning Zhang, Jouni I. Peltoniemi, Linlu Mei, Jing Guo, Siyang Yin, Lei Cui, Yaxuan Chang, Rui Xie:
Evaluation of the Snow Albedo Retrieved from the Snow Kernel Improved the Ross-Roujean BRDF Model. Remote. Sens. 11(13): 1611 (2019) - [j11]Lei Cui, Ziti Jiao, Yadong Dong, Mei Sun, Xiaoning Zhang, Siyang Yin, Anxin Ding, Yaxuan Chang, Jing Guo, Rui Xie:
Estimating Forest Canopy Height Using MODIS BRDF Data Emphasizing Typical-Angle Reflectances. Remote. Sens. 11(19): 2239 (2019) - [j10]Yadong Dong, Ziti Jiao, Lei Cui, Hu Zhang, Xiaoning Zhang, Siyang Yin, Anxin Ding, Yaxuan Chang, Rui Xie, Jing Guo:
Assessment of the Hotspot Effect for the PROSAIL Model With POLDER Hotspot Observations Based on the Hotspot-Enhanced Kernel-Driven BRDF Model. IEEE Trans. Geosci. Remote. Sens. 57(10): 8048-8064 (2019) - 2018
- [j9]Xiaoning Zhang, Ziti Jiao, Yadong Dong, Hu Zhang, Yang Li, Dandan He, Anxin Ding, Siyang Yin, Lei Cui, Yaxuan Chang:
Potential Investigation of Linking PROSAIL with the Ross-Li BRDF Model for Vegetation Characterization. Remote. Sens. 10(3): 437 (2018) - [j8]Yadong Dong, Ziti Jiao, Siyang Yin, Hu Zhang, Xiaoning Zhang, Lei Cui, Dandan He, Anxin Ding, Yaxuan Chang, Shengtian Yang:
Influence of Snow on the Magnitude and Seasonal Variation of the Clumping Index Retrieved from MODIS BRDF Products. Remote. Sens. 10(8): 1194 (2018) - [j7]Hu Zhang, Ziti Jiao, Lei Chen, Yadong Dong, Xiaoning Zhang, Yi Lian, Da Qian, Tiejun Cui:
Quantifying the Reflectance Anisotropy Effect on Albedo Retrieval from Remotely Sensed Observations Using Archetypal BRDFs. Remote. Sens. 10(10): 1628 (2018) - 2017
- [j6]Jian-Hua Huang, Ziming Zhao, Yubo Yuan, Yadong Dong:
Multi-factor and Distributed Clustering Routing Protocol in Wireless Sensor Networks. Wirel. Pers. Commun. 95(3): 2127-2142 (2017) - 2016
- [j5]Yadong Dong, Ziti Jiao, Hu Zhang, Dongni Bai, Xiaoning Zhang, Yang Li, Dandan He:
A visualization tool for the kernel-driven model with improved ability in data analysis and kernel assessment. Comput. Geosci. 95: 1-10 (2016) - [j4]Hu Zhang, Ziti Jiao, Yadong Dong, Peng Du, Yang Li, Yi Lian, Tiejun Cui:
Analysis of Extracting Prior BRDF from MODIS BRDF Data. Remote. Sens. 8(12): 1004 (2016) - 2015
- [j3]Hu Zhang, Ziti Jiao, Yadong Dong, Xiaowen Li:
Evaluation of BRDF Archetypes for Representing Surface Reflectance Anisotropy Using MODIS BRDF Data. Remote. Sens. 7(6): 7826-7845 (2015) - [j2]Ziti Jiao, Hu Zhang, Yadong Dong, Qiang Liu, Qing Xiao, Xiaowen Li:
An Algorithm for Retrieval of Surface Albedo From Small View-Angle Airborne Observations Through the Use of BRDF Archetypes as Prior Knowledge. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 8(7): 3279-3293 (2015) - 2013
- [j1]Xingying Huang, Ziti Jiao, Yadong Dong, Hu Zhang, Xiaowen Li:
Analysis of BRDF and Albedo Retrieved by Kernel-Driven Models Using Field Measurements. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 6(1): 149-161 (2013)
Conference and Workshop Papers
- 2021
- [c29]Rui Xie, Ziti Jiao, Yadong Dong, Xiaoning Zhang, Siyang Yin, Lei Cui, Jing Guo, Sijie Li, Zidong Zhu, Yidong Tong:
Estimation of Mixed Forests Clumping Index and Its Spatial Heterogeneity Study. IGARSS 2021: 3701-3704 - [c28]Xiaoning Zhang, Ziti Jiao, Changsen Zhao, Sijie Li, Zidong Zhu, Yidong Tong, Jing Guo, Rui Xie, Siyang Yin, Lei Cui, Yadong Dong, Hu Zhang:
Evaluation of BRDF Information from Himawari-8 AHI Time-Series Multi-Angle Observations. IGARSS 2021: 4492-4495 - [c27]Siyang Yin, Ziti Jiao, Xiaoning Zhang, Lei Cui, Rui Xie, Jing Guo, Zidong Zhu, Sijie Li, Yadong Dong, Yidong Tong:
The Influence of Spatial Resolution on the Retrieval of Clumping Index Based on Polder and Modis Data. IGARSS 2021: 6754-6756 - 2020
- [c26]Yadong Dong, Jing Li, Ziti Jiao, Qinhuo Liu, Jing Zhao, Hu Zhang:
A Method for Improving the Accuracy of the Moderate Resolution LAI Product Based on the Mixed-Pixel Clumping Index. IGARSS 2020: 4303-4306 - [c25]Hu Zhang, Jing Li, Qinhuo Liu, Jing Zhao, Yadong Dong:
A highly chlorophyll-sensitive and LAI-insensitive index based on the red-edge band: CSI. IGARSS 2020: 5014-5017 - 2019
- [c24]Ziti Jiao, Anxin Ding, Alexander A. Kokhanovsky, Yadong Dong:
Modeling the Anisotropic Reflectance of Snow in a Kernel-Driven BRDF Model Framework Using a Snow Kernel. IGARSS 2019: 740-743 - [c23]Anxin Ding, Ziti Jiao, Yadong Dong, Xiaoning Zhang, Lei Cui, Siyang Yin, Yaxuan Chang, Jing Guo, Rui Xie:
Assessing Performance of the Kernel-Driven BRDF Models in Retrieving Snow Albedo Based on the bic-PT Model. IGARSS 2019: 4052-4055 - [c22]Hu Zhang, Lei Chen, Yi Lian, Pengfei Liu, Yadong Dong, Da Qian:
A Rapid Albedo Inversion Method from NADIR Reflectance Based on MODIS BRDF Product. IGARSS 2019: 4344-4347 - [c21]Siyang Yin, Ziti Jiao, Yadong Dong, Lei Cui, Anxin Ding, Xiaoning Zhang, Yaxuan Chang, Rui Xie, Jing Guo:
Modeling Landsat Clumping Index Basing On MODIS and Field Data: A Machine Learning Approach. IGARSS 2019: 6570-6573 - [c20]Yadong Dong, Jing Guo, Ziti Jiao, Hu Zhang, Xiaoning Zhang, Lei Cui, Siyang Yin, Anxin Ding, Yaxuan Chang, Rui Xie:
A Software Tool for Retrieving The Clumping Index Product From The MODIS Products. IGARSS 2019: 6574-6577 - [c19]Xiaoning Zhang, Jing Guo, Ziti Jiao, Yadong Dong, Siyang Yin, Lei Cui, Hu Zhang, Anxin Ding, Yaxuan Chang, Rui Xie:
Sensitivity of BRDF Sampling to Albedo and Angle Index Based on Airborne Multiangle Data. IGARSS 2019: 6696-6699 - [c18]Yaxuan Chang, Ziti Jiao, Xiaoning Zhang, Yadong Dong, Siyang Yin, Lei Cui, Anxin Ding, Jing Guo, Rui Xie:
An Analysis of Improved Ross-Li Models on the Ability of Estimationg Albedo Under Large Solar Zenith Angle by Polder Datasets. IGARSS 2019: 6708-6711 - [c17]Lei Cui, Jing Guo, Ziti Jiao, Mei Sun, Yadong Dong, Xiaoning Zhang, Siyang Yin, Yaxuan Chang, Anxing Ding, Rui Xie:
Retrieval of the Forest Leaf Area Index Based on the Laser Penetration Ratio from the GLAS Waveform Lidar Data. IGARSS 2019: 8972-8975 - 2018
- [c16]Ziti Jiao, Yadong Dong:
A Method to Enhance the Geometric-Optical Kernel for Further Improving Hotspot Effect in Modis Brdf Model. IGARSS 2018: 1715-1718 - [c15]Yadong Dong, Ziti Jiao, Lei Cui, Siyang Yin, Yaxuan Chang, Xiaoning Zhang, Dandan He, Anxin Ding:
The Influence of Snow Cover on the Seasonal Variation of Global Clumping Index Products. IGARSS 2018: 5406-5409 - [c14]Lei Cui, Ziti Jiao, Yadong Dong, Xiaoning Zhang, Mei Sun, Siyang Yin, Yaxuan Chang, Dandan He, Anxing Ding:
Forest Vertical Structure from MODIS BRDF Shape Indicators. IGARSS 2018: 5911-5914 - 2016
- [c13]Hu Zhang, Ziti Jiao, Pengfei Liu, Yadong Dong, Yi Lian, Hongyuan Huo, Tiejun Cui:
Assessment of the correlation between reflectance anisotropy and NDVI using MODIS BRDF product. IGARSS 2016: 1284-1287 - [c12]Ziti Jiao, Yadong Dong, Hu Zhang:
To reconstruct hotspot effect for MODIS BRDF archetypes using a hotspot-corrected kernel-driven BRDF model. IGARSS 2016: 2654-2656 - [c11]Yadong Dong, Ziti Jiao, Dandan He, Yang Li, Xiaoning Zhang:
A method for kernel-driven model to correct the blended hemispherical diffuse irradiance in multi-angle measurements. IGARSS 2016: 3504-3507 - [c10]Xiaoning Zhang, Ziti Jiao, Yadong Dong, Dongni Bai, Yang Li, Dandan He:
Analysis of anisotropy variance between the kernel-driven model and the PROSAIL model. IGARSS 2016: 5506-5509 - 2015
- [c9]Xiaoning Zhang, Ziti Jiao, Yang Li, Yadong Dong, Dongni Bai:
Preliminary validation and application of the angle products of MODIS AFX based on kernel-driven model. IGARSS 2015: 1945-1948 - [c8]Yang Li, Ziti Jiao, Xiaoning Zhang, Hu Zhang, Yadong Dong:
Research about the bidirectional NDVI based on kernel-driven models. IGARSS 2015: 1949-1952 - 2014
- [c7]Yadong Dong, Huaping Guo, Weimei Zhi, Ming Fan:
Class Imbalance Oriented Logistic Regression. CyberC 2014: 187-192 - [c6]Ziti Jiao, Yadong Dong, Hu Zhang, Xiaowen Li:
To derive BRDF archetypes from POLDER-3 BRDF database. IGARSS 2014: 3586-3589 - [c5]Hu Zhang, Ziti Jiao, Yadong Dong, Xiaowen Li:
Evaluation of BRDF archetypes from MODIS multi-angular observations. IGARSS 2014: 4738-4741 - 2013
- [c4]Ziti Jiao, Yadong Dong, Xiaowen Li:
An approach to improve hot spot effect for the MODIS BRDF/Albedo algorithm. IGARSS 2013: 3037-3039 - [c3]Hu Zhang, Ziti Jiao, Yadong Dong, Xingying Huang, Jiayue Li, Xiaowen Li:
An algorithm for the retrieval of albedo form nadir reflectance using prior knowledge. IGARSS 2013: 3040-3043 - 2012
- [c2]Xingying Huang, Ziti Jiao, Yadong Dong, Xiaowen Li, Hu Zhang:
BRDF modeling comparison in hotspot effect with modified kernel-driven models. IGARSS 2012: 4248-4251 - 2011
- [c1]Xingying Huang, Ziti Jiao, Yadong Dong, Hu Zhang, Xiaowen Li:
Introduction of a tool for BRDF modeling and visualization named V_AMBRALS. IGARSS 2011: 3460-3463
Coauthor Index
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.
Unpaywalled article links
Add open access links from to the list of external document links (if available).
Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.
Archived links via Wayback Machine
For web page which are no longer available, try to retrieve content from the of the Internet Archive (if available).
Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.
Reference lists
Add a list of references from , , and to record detail pages.
load references from crossref.org and opencitations.net
Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.
Citation data
Add a list of citing articles from and to record detail pages.
load citations from opencitations.net
Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.
OpenAlex data
Load additional information about publications from .
Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.
last updated on 2024-10-07 22:16 CEST by the dblp team
all metadata released as open data under CC0 1.0 license
see also: Terms of Use | Privacy Policy | Imprint