3/26/2023 0 Comments Antique map cartographica![]() ![]() ETHNOGRAPHY AND ETHNOLOGY XXV.a General studies on ethnology and ethnic group relations XXV.b Studies on the various groups and nationalities 1. CHRISTIAN AND HAGIOGRAPHICAL LITERATURE XXIV. XXII FOLKLORE, MAGIC, ORAL TRADITIONS MUSIC MATERIAL CULTURE, ARCHITECTURE, ARTS AND CRAFTS XXII.a Religieus art and architecture XXII.b 'Secular' and modern art XXn.c Material culture and crafts XXn.d Literature XXIII. ETHNOMEDICINE, TRADITIONAL HEALING, DISEASE HISTORY 249 lĥ X X. INTERNATIONAL RELATIONS 204 XV.a Before XV.b After XVI. DROUGHT AND FAMINE REFUGEES AND RESETTLEMENT 195 XV. SOCIAL STRUCTURE AND SOCIAL CHANCE 188 XIV. MODERNIZATION, COMMUNICATIONS, INDUSTRY AND ECONOMIC DEVELOPMENT 173 XIII. POLITICS, LAW AND REVOLUTIONARY DEVELOPMENT AFTER IX. CULTURAL GEOGRAPHY AND DEMOGRAPHY 111 VII. ![]() l General works on society and history 40 V.2 Prehistory Antiquity Aksum 52 V.3 MiddleAges,uptol V V.5 Italo-Ethiopian war and Italian occupation, V present 106 VI. l Primary sources 28 IV.2 Works about travellers and foreigners 33 V fflstory 40 V. STUDIES ON MANUSCRIPTS, DOCUMENTS, ARCHIVES AND LIBRARY RESOURCES 18 IV. 45) ISBN Trefw.: Ethiopië Sociale Geschiedenis ISBN ISBNĤ CONTENTS ******** Page PREFACE 3 I. Abbink, J Ethiopian society and history : a bibliography of Ethiopian studies / J.Abbink - Leiden : African Studies Centre - (Research Reports / African Studies Centre No. Copies inay be ordered firom the African Studies Centre, P.O.Box 9555, 2300 RB Leiden, Thfc Netherlands. r l" r, i"\ģ ETHIOPIAN SOCIETY AND HISTORY: A BIBLIOGRAPHY OF ETHIOPIAN STUDIES CIP-GEGEVENS KONINKLIJKE BIBLIOTHEEK, DEN HAAG The copyright of the separate contrihutions in this series remains with the authors. Abbink AFRICAN STUDIES CENTRE LEIDEN, THE NETHERLANDS Research Reports 1991/45Ģ ( Afrika-Studiecentrum ETHIOPIAN SOCIETY AND HISTORY: A BIBLIOGRAPHY OF ETHIOPIAN STUDIES J. Other possible other usages of the method are also discussed.1 J. This paper introduces the calculation mechanism and examples of the usage. The minimum search can be refined by using the previous result parameter set as new initial values. The algorithm runs until the change of the parameters sinks below a pre-defined limit. The initial values of the geographical coordinates of the projection centre are calculated as the average of the control points, while the other parameters are set to experimental values which represent the most common circumstances of taking a globe photograph. The program reads the Global Mappers Ground Control Point (.GCP) file format as input and creates projection description files (.PRJ) for the same software. The parameters are the geographical coordinates of the projection centre, the image coordinates of the same point, the rotation of the projection, the height of the perspective point and the scale of the photo (calculated in pixels/km). ![]() The function in the present application is the average error of the control points calculated from the actual values of parameters. The Nelder-Mead method is a numerical algorithm for minimizing a function in a many-dimensional space. The author developed a program for this task which uses the Nelder-Mead Method in order to find the optimum parameters when a set of control points are given as input. ![]() Several hundreds of globe photos had to be georeferenced during the Virtual Globes Museum project, which made necessary to automatize the calculation of the projection parameters. These parameters depend on the position of the viewpoint of the camera. When georeferencing such a photo, the exact parameters of the projections are also needed. The only hard issue is its projection: the so-called Tilted Perspective Projection which, if the optical axis of the photo intersects the globe's centre, is simplified to the Vertical Near-Side Perspective Projection. A photo of a terrestrial or celestial globe can be handled as a map. ![]()
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