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  • 1
    Call number: S 99.0139(377)
    In: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover, Nr. 377
    Type of Medium: Series available for loan
    Pages: XVI, 146 Seiten , Diagramme, Illustrationen, Karten
    ISBN: 978-3-7696-5295-6 , 9783769652956
    ISSN: 0065-5325
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Leibniz Universität Hannover Nr. 377
    Language: English , German
    Note: Dissertation, Gottfried Wilhelm Leibniz Universität Hannover, 2021 , Contents 1. Introduction 1.1. Motivation 1.2. Goal and Contributions 1.3. Structure of this Thesis 2. Fundamentals 2.1. Classification 2.2. Artificial Neural Network 2.2.1. Perceptron 2.2.2. Multilayer Percptrons 2.2.3. Training 2.2.3.1. Loss Function 2.2.3.2. Gradient Descent Optimization 2.2.3.3. Step Learning Policy 2.3. Convolution Neural Networks 2.3.1. Components 2.3.1.1. Convolution 2.3.1.2. Pooling 2.3.1.3. Batch Normalization 2.3.2. CNN for Image Classification 2.3.3. CNN for Semantic Segmentation 2.3.3.1. Fully Convolution Networks 2.3.3.2. U-Net 2.3.4. Training 2.3.5. Data Augmentation 3. Related Work 3.1. CNN in general 3.1.1. Image Classification 3.1.2. Semantic Segmentation 3.2. Land Cover Classification 3.3. Land Use Classification 3.3.1. Methods not based on CNN 3.3.2. CNN-based Methods 3.4. Discussion 3.4.1. Land Cover Classification 3.4.2. Land Use Classification 4. Methodology 4.1. Overview 4.2. Land Cover Classification 4.2.1. Network Architecture 4.2.2. Network Variants 4.2.2.1. Network without skip-connections 4.2.2.2. Network with elementwise addition skip-connections 4.2.2.3. Network with learnable skip-connections 4.2.3. Training 4.3. Hierarchical Land Use Classification 4.3.1. Polygon Shape Representation 4.3.2. Patch Preparation 4.3.2.1. Tiling 4.3.2.2. Scaling 4.3.2.3. Combination of tiling and scaling 4.3.3. Network Architecture 4.3.3.1. Base Network for Mask Representation: LuNet-lite 4.3.3.2. LuNet-lite with Multi-Task Learning 4.3.3.3. Achieving Consistency with the Class Hierarchy 4.3.3.4. Network Architecture for Implicit Representation 4.3.4. Training 4.3.4.1. LuNet-lite 4.3.4.2. LuNet-lite-MT 4.3.4.3. LuNet-lite-JO and LuNet-lite-BG-JO 4.3.5. Inference at Object Level 5. Datasets and Test Setup 5.1. Datasets 5.1.1. Hameln 5.1.2. Schleswig 5.1.3. Mecklenburg-Vorpommern (MV) 5.1.4. Vaihingen and Potsdam 5.2. Evaluation Metrics 5.3. Experimental Setup 5.3.1. Land Cover Classification 5.3.1.1. Test Setup 5.3.1.2. Overview of all Experiments 5.3.1.3. Prediction Variability of FuseNet-lite 5.3.1.4. Impact of the Hyperparameter Settings 5.3.1.5. Effectiveness of the learnable Skip-Connections 5.3.1.6. Performance of FuseNet-lite 5.3.1.7. Combining Datasets 5.3.2. Land Use Classification 5.3.2.1. Input Configurations 5.3.2.2. Test Setup 5.3.2.3. Overview of all Experiments 5.3.2.4. Prediction Variability of LuNet-lite-JO 5.3.2.5. Impact of the Hyperparameter Settings 5.3.2.6. Impact of Joint Optimization 5.3.2.7. Impact of the Polygon Representation 5.3.2.8. Impact of Land Cover Information 5.3.2.9. Impact of the Patch Generation 5.3.2.10. Evaluation on all Datasets 5.3.2.11. Combining Datasets 6. Experiments 6.1. Evaluation of Land Cover Classification 6.1.1. Prediction Variability of FuseNet-lite 6.1.2. Investigations of the Hyperparameter Settings 6.1.2.1. Base Learning Rate 6.1.2.2. Mini Batch Size 6.1.2.3. The Weight of the Penalty Term in the Focal Loss 6.1.3. Effectiveness of the learnable Skip-Connections 6.1.4. Evaluation on the individual Datasets 6.1.4.1. Hameln, Schleswig and MV 6.1.4.2. Vaihingen and Potsdam 6.1.4.3. Answers to the Questions raised in Section 5.3.1.6 6.1.5. Training on the combined Datasets 6.1.6. Discussion 6.2. Evaluation of Land Use Classification 6.2.1. Prediction Variability of LuNet-lite-JO 6.2.2. Investigations of the Hyperparameter Settings 6.2.2.1. Base Learning Rate 6.2.2.2. Mini Batch Size 6.2.2.3. The Weight of the Penalty Term in the Focal Loss 6.2.3. Impact of Joint Optimization 6.2.4. Impact of the Polygon Representation 6.2.5. Impact of Land Cover Information 6.2.6. Impact of the Patch Generation Approach 6.2.7. Evaluation on all Datasets 6.2.8. Training on combined Datasets 6.2.9. Discussion 7. Conclusion and Outlook 7.1. Conclusion 7.2. Outlook References , Sprache der Kurzfassungen: Englisch, Deutsch
    Location: Lower compact magazine
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  • 2
    Call number: PIK N 071-07-0233
    Type of Medium: Monograph available for loan
    Pages: 142 S. , graph. Darst.
    ISBN: 9789264030145
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 3
    Call number: PIK B 160-07-0342
    Type of Medium: Monograph available for loan
    Pages: 192 S.
    Edition: 1. Aufl.
    ISBN: 9783899652437 , 3-89965-243-6
    Location: A 18 - must be ordered
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  • 4
    Monograph available for loan
    Monograph available for loan
    Dordrecht : Kluwer Academic Publishers
    Associated volumes
    Call number: PIK M 490-01-0627
    In: nonconvex optimization and its applications
    Type of Medium: Monograph available for loan
    Pages: 454 p.
    ISBN: 0792361458
    Series Statement: nonconvex optimization and its applications
    Location: A 18 - must be ordered
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  • 5
    Monograph available for loan
    Monograph available for loan
    Cham : Springer Nature
    Call number: AWI G3-21-94155
    Description / Table of Contents: This book provides a comprehensive, up-to-date assessment of the key terrestrial components of the Arctic system, i.e., its hydrology, permafrost, and ecology, drawing on the latest research results from across the circumpolar regions. The Arctic is an integrated system, the elements of which are closely linked by the atmosphere, ocean, and land. Using an integrated system approach, the book’s 30 chapters, written by a diverse team of leading scholars, carefully examine Arctic climate variability/change, large river hydrology, lakes and wetlands, snow cover and ice processes, permafrost characteristics, vegetation/landscape changes, and the future trajectory of Arctic system evolution. The discussions cover the fundamental features of and processes in the Arctic system, with a special focus on critical knowledge gaps, i.e., the interactions and feedbacks between water, permafrost, and ecosystem, such as snow pack and permafrost changes and their impacts on basin hydrology and ecology, river flow, geochemistry, and energy fluxes to the Arctic Ocean, and the structure and function of the Arctic ecosystem in response to past/future changes in climate, hydrology, and permafrost conditions. Given its scope, the book offers a valuable resource for researchers, graduate students, environmentalists, managers, and administrators who are concerned with the northern environment and resources.
    Type of Medium: Monograph available for loan
    Pages: XV, 914, C1 Seiten , Illustrationen, Fotogafien (farbig), Karten (farbig), Diagramme (farbig)
    Edition: corrected publication 2021
    ISBN: 9783030509309
    Language: English
    Note: Contents Part I Arctic Climate and Greenland 1 Arctic Climate Change, Variability, and Extremes / John E. Walsh 2 Precipitation Characteristics and Changes / Hengchun Ye, Daqing Yang, Ali Behrangi, Svetlana L. Stuefer, Xicai Pan, Eva Mekis, Yonas Dibike, and John E. Walsh 3 Snow Cover - Observations, Processes, Changes, and Impacts on Northern Hydrology / Ross Brown, Philip Marsh, Stephen Déry, and Daqing Yang 4 Evaporation Processes and Changes Over the Northern Regions / Yinsheng Zhang, Ning Ma, Hotaek Park, John E. Walsh, and Ke Zhang 5 Greenland Ice Sheet and Arctic Mountain Glaciers / Sebastian H. Mernild, Glen E. Liston, and Daqing Yang Part II Hydrology and Biogeochemistry 6 Regional and Basin Streamflow Regimes and Changes: Climate Impact and Human Effect / Michael Rawlins, Daqing Yang, and Shaoqing Ge 7 Hydrologic Extremes in Arctic Rivers and Regions: Historical Variability and Future Perspectives / Rajesh R. Shrestha, Katrina E. Bennett, Daniel L. Peters, and Daqing Yang 8 Overview of Environmental Flows in Permafrost Regions / Daniel L, Peters, Donald J. Baird, Joseph Culp, Jennifer Lento, Wendy A. Monk, and Rajesh R. Shrestha 9 Yukon River Discharge Response to Seasonal Snow Cover Change / Daqing Yang, Yuanyuan Zhao, Richard Armstrong, Mary J. Brodzik, and David Robinson 10 Arctic River Water Temperatures and Thermal Regimes / Daqing Yang, Hoteak Park, Amber Peterson, and Baozhong Liu 11 Changing Biogeochemical Cycles of Organic Carbon, Nitrogen, Phosphorus, and Trace Elements in Arctic Rivers / Jonathan O'Donnell, Thomas Douglas, Amanda Barker, and Laodong Guo 12 Arctic Wetlands and Lakes-Dynamics and Linkages / Kathy L. Young, Laura Brown, and Yonas Dibike 13 River Ice Processes and Changes Across the Northern Regions / Daqing Yang, Hotaek Park, Terry Prowse, Alexander Shiklomanov, and Ellie McLeod Part III Permafrost and Frozen Ground 14 Permafrost Features and Talik Geometry in Hydrologic System / Kenji Yoshikawa and Douglas L. Kane 15 Ground Temperature and Active Layer Regimes and Changes / Lin Zhao, Cangwei Xie, Daqing Yang, and Tingjun Zhang 16 Permafrost Hydrology: Linkages and Feedbacks / Tetsuya Hiyama, Daqing Yang, and Douglas L. Kane 17 Permafrost Hydrogeology / Barret L. Kurylyk and Michelle A. Walvoord Part IV Ecosystem Change and Impact 18 Greenhouse Gases and Energy Fluxes at Permafrost Zone / Masahito Ueyama, Hiroki Iwata, Hideki Kobayashi, Eugénie Euskirchen, Lutz Merbold, Takeshi Ohta, Takashi Machimura, Donatella Zona, Walter C. Oechel, and Edward A. G. Schuur 19 Spring Phenology of the Boreal Ecosystems / Nicolas Delbart 20 Diagnosing Environmental Controls on Vegetation Greening and Browning Trends Over Alaska and Northwest Canada Using Complementary Satellite Observations / Youngwook Kim, John S. Kimball, Nicholas Parazoo, and Peter Kirchner 21 Boreal Forest and Forest Fires / Yongwon Kim, Hideki Kobayashi, Shin Nagai, Masahito Ueyama, Bang-Yong Lee, and Rikie Suzuki 22 Northern Ecohydrology of Interior Alaska Subarctic / Jessica M. Young-Robertson, W. Robert Bolton, and Ryan Toohey 23 Yukon River Discharge-NDVI Relationship / Weixin Xu and Daqing Yang Part V Cross-System Linkage and Integration 24 River Freshwater Flux to the Arctic Ocean / Alexander Shiklomanov, Stephen Déry, Mikhail Tretiakov, Daqing Yang, Dmitry Magritsky, Alex Georgiadi, and Wenqing Tang 25 River Heat Flux into the Arctic Ocean / Daqing Yang, Shaoqing Ge, Hotaek Park, and Richard L. Lammers 26 Cold Region Hydrologic Models and Applications / Hotaek Park, Yonas Dibike, Fengge Su, and John Xiaogang Shi 27 Regional Climate Modeling in the Northern Regions / Zhenhua Li, Yanping Li, Daqing Yang, and Rajesh R. Shrestha 28 High-Resolution Weather Research Forecasting (WRF) Modeling and Projection Over Western Canada, Including Mackenzie Watershed / Yanping Li and Zhenhua Li 29 Responses of Boreal Forest Ecosystems and Permafrost to Climate Change and Disturbances: A Modeling Perspective / Shuhua Yi and Fengming Yuan 30 Future Trajectory of Arctic System Evolution / Kazuyuki Saito, John E. Walsh, Arvid Bring, Ross Brown, Alexander Shiklomanov, and Daqing Yang Correction to: Arctic Hydrology, Permafrost and Ecosystems / Daqing Yang, and Douglas L. Kane
    Location: AWI Reading room
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  • 6
    Call number: S 90.0081(431)
    In: Reports of the Department of Geodetic Science and Surveying
    Type of Medium: Series available for loan
    Pages: XII, 150 S.
    Series Statement: Report / Department of Geodetic Science and Surveying, the Ohio State University 431
    Language: English
    Location: Lower compact magazine
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  • 7
    Monograph available for loan
    Monograph available for loan
    New Jersey : World Scientific
    Call number: IASS 16.90548
    Description / Table of Contents: "Over the last few years Asian governments have taken a stronger approach to the Arctic, culminating with permanent-observer status to the Arctic Council for China, India, Japan, Singapore and South-Korea in May 2013. This groundbreaking book brings together the latest research in emerging Asian interests for the Arctic region, and the implications thereof this change has for the future. This book covers Arctic shipping, fisheries and mineral extraction. It analyzes key Asian countries' policies, positions and activities. The book also demonstrates that there are common aspects which attract Asian countries to the Arctic, such as a concern for climate change, but there are also important national differences. From the Arctic Council to UNCLOS, Arctic governance mechanisms are thoroughly presented and analyzed"--
    Type of Medium: Monograph available for loan
    Pages: xx, 290 Seiten , Illustrationen
    ISBN: 9789814644174
    Language: English
    Branch Library: IASS Library
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  • 8
    Monograph available for loan
    Monograph available for loan
    New York : Oxford Univ. Press [u.a.]
    Associated volumes
    Call number: 17/M 04.0599
    In: International series of monographs on chemistry
    Type of Medium: Monograph available for loan
    Pages: IX, 333 S. , graph. Darst.
    ISBN: 0195092767
    Series Statement: International series of monographs on chemistry 16
    Classification:
    Meteorology and Climatology
    Location: Upper compact magazine
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  • 9
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : MIT Press
    Call number: PIK N 076-09-0146
    Description / Table of Contents: Contents: 1 Introduction ; 1.1 Integrated Assessment of Climate Change ; 1.2 Game-Theoretic Analysis of Environmental Issues ; 1.3 Motivation and Scope of This Research ; 2 Modeling Global Environmental Issues as a Cooperative Game of Stock Externality Provisions ; 2.1 Introduction ; 2.2 Efficient Provision of Detrimental Externality and the Incentives ; 2.3 The Game of Stock Externality Provisions ; 2.4 The Solution Concepts of the Cooperative Game ; 2.5 Efficiency and Game-Theoretic Solutions ; 3 The RICE Model ; 3.1 An Overview ; 3.2 Model Description and Calibration ; 3.3 Solution Concepts in the RICE Model ; 3.4 Solution Algorithms ; 4 Cooperative Game Solutions and Other Solutions in the RICE Model ; 4.1 Two Benchmarks: BaU and Open-Loop Nash Equilibrium Scenarios ; 4.2 Why Conventional Solutions Are Unfit for Analyzing International Cooperation ; 4.3 Cooperative Game Solutions of the RICE Model ; 4.4 Synthesis ; 4.5 Side Payments toward Equalization of Mitigation Costs ; 5 Analysis of Game-Theoretic Solutions in RICE ; 5.1 Stability of the Grand Coalition ; 5.2 Sensitivity Analysis from a Strategic Perspective ; 6 Policy Applications of Game-Theoretic Solutions in RICE ; 6.1 Incentive Compatibilities of Unilateral Actions ; 6.2 Renegotiation of International Environmental Agreements (IEAs) ; 6.3 Distribution Analysis of GHG Mitigation Policies from Strategic Perspectives ; 6.4 The Second-Best Subcoalitions of GHG Mitigations ; Epilogue: Further Research Directions ; Appendixes ; 1. The Description of the RICE Model ; 2. GAMS Code of the Example in Section 2.1 ; 3. GAMS Codes of the RICE Model (Core Part) ; Notes ; References ; Index
    Type of Medium: Monograph available for loan
    Pages: X, 191 S. : graph. Darst.
    ISBN: 9780262240543
    Location: A 18 - must be ordered
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  • 10
    Monograph available for loan
    Monograph available for loan
    Berlin [u.a.] : Springer
    Call number: PIK M 390-12-0014
    Description / Table of Contents: Contents: Introduction and Mathematical Preliminaries ; Vector Optimization Problems ; Vector Variational Inequalities ; Vector Variational Principles ; Vector Minimay Inequalities ; Vector Network Equilibrium Problems
    Type of Medium: Monograph available for loan
    Pages: X, 306 S.
    ISBN: 3540212892 , 978-3-540-21289-8
    Series Statement: Lecture notes in economics and mathematical systems 541
    Location: A 18 - must be ordered
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