Search for dissertations about: "Wolter Arnberg"

Found 3 swedish dissertations containing the words Wolter Arnberg.

2. 1. Multispectral reflectance measurements and signature analysis

   Author : Wolter Arnberg; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : The use of aerial photographs and satellite images may be.facilitated by a deeper knowledge of the reflection properties of natural features. This thesis, which includes a concluding essay and three more papers, is a study of two methods of multispectral reflectance measurements. READ MORE

4. 2. Artificial neural networks : applications in morphometric and landscape features analysis

   Author : Amir Houshang Ehsani; Fredrich Quiel; Wolter Arnberg; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental engineering; Miljöteknik;

   Abstract : In this thesis a semi-automatic method is developed to analyze morphometric features and landscape elements based on Self Organizing Map (SOM) as a unsupervised Artificial Neural Network algorithm. Analysis and parameterization of topography into simple and homogenous land elements (landform) can play an important role as basic information in planning processes and environmental modeling. READ MORE

5. 3. More Water, Less Grass? : An assessment of resource degradation and stakeholders’ perceptions of environmental change in Ombuga Grassland, Northern Namibia

   Author : Patrik Klintenberg; Carl Christiansson; Wolter Arnberg; Peter Schlyter; Stein W. Bie; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Environmental monitoring; semi-arid; pastoralism; rural water supply; indicators; local knowledge; vegetation survey; satellite remote sensing; Physical geography; Naturgeografi; geografi med naturgeografisk inriktning; Physical Geography;

   Abstract : The objectives of this thesis are to assess: to what degree have natural resources deteriorated in a grazing area in northern Namibia, how do perceptions of environmental change held by local stakeholders there, correspond to scientific assessments, and how do these relate to national estimates? Analysis of the process of developing national indicators for monitoring of land degradation concluded that specific indicators should be developed on national level, and in some instances even on local level as there are no universal causes of land degradation. According to farmers overgrazing and low rainfall since the early 1990s cause negative environmental changes in the study area, partly confirming findings from national monitoring. READ MORE