@inproceedings{HartmannLieberumPlewkaetal.2005, author = {Hartmann, Michael and Lieberum, Uta and Plewka, Tomas and Sauer, Petra and Schweikart, Joachim and Yossa Nou b ikou, Jean-Jacques and Schleusener, Heinz}, title = {Development of Geo-Based interactive Web Portals for Joint Ventures-Problems and Challenges}, series = {Informatika a felsőoktat{\´a}sban, Debrecen}, booktitle = {Informatika a felsőoktat{\´a}sban, Debrecen}, year = {2005}, abstract = {Keine Angabe No details}, language = {en} } @inproceedings{HartmannPeukerNjinkeu2006, author = {Hartmann, Michael and Peuker, Sigrid and Njinkeu, Jules}, title = {Erneuerbare Energien f{\"u}r die Infrastrukturentwicklung l{\"a}ndlicher Regionen in Mosambik}, series = {Armutsbek{\"a}mpfung und Infrastrukturentwicklung in Mosambik, Bad Honnef}, booktitle = {Armutsbek{\"a}mpfung und Infrastrukturentwicklung in Mosambik, Bad Honnef}, year = {2006}, abstract = {Das Potential erneuerbarer Energien f{\"u}r die Infrastrukturentwicklung insbesondere der l{\"a}ndlichen Region.}, language = {de} } @article{GocekHartmannSchleusener2006, author = {Gocek, Pawel and Hartmann, Michael and Schleusener, Heinz}, title = {Modern Technologies in Client-Server Architecture for Geo-based Interactive Web Portals}, series = {Journal of Universal Computer Science}, volume = {12}, journal = {Journal of Universal Computer Science}, number = {9}, url = {http://nbn-resolving.de/urn:nbn:de:0298-opus4-5335}, pages = {1208 -- 1214}, year = {2006}, abstract = {The internet is an unlimited growing and most comfortable information and communication base. In this context, web portals on the internet play an important role created for combining communication facilities and information data bases. An increasing number of portals involve web-based map applications to integrate geographic information for the representation of economical and other records. Web-based map applications are typically designed in a client-server architecture. Different solutions exist using especially HTML and JavaScript, Flash or Java applets. We discuss these possibilities and point out an alternative solution. Particularly, we show how to use Java Applet Technology and Asynchronous JavaScript and XML (Ajax) in this field. Finally, we report about our results as a complete, flexible map service solution which is available on the internet. An adapted kind of solution will be used by a geo-based marketing portal for offering information about the economic situation, social and cultural aspects and natural facts of regions to support joint-ventures inside the European Union.}, language = {en} } @inproceedings{GocekHartmannSchleusener2006, author = {Gocek, Pawel and Hartmann, Michael and Schleusener, Heinz}, title = {Modern Technologies in client-server Architecture for Geo-Based Webportals: represented by examples for Companies in Food Technology and Food Industry}, series = {Proceedings of the 7th International Conference on Food Science, Szeged}, booktitle = {Proceedings of the 7th International Conference on Food Science, Szeged}, year = {2006}, abstract = {In the last decade, portals on the WWW have been extensively developed for different applications in e-business, e-commerce, e-government or science and are used as an information and communication base. Recently, due to the progression of web- technologies, new user-friendly features could be added into portals. Among them the incorporation of geographic informations became most important since many relevant data are related to space. In such a way the value and the appropriate visualization of the relevant information as well as the ability to investigate the interrelation between different data could be reached (Bernhardt, 02). Geo-based web portals combine the features of common portals like searching for keywords or navigating with geo information systems (GIS). For a certain target group they provide a unique presentation of all relevant information within a region or a market, and provide user specific communication tools. In this context, providing maps is one of the main characteristics of geo-based web portals. Creating a geo-referenced map is a challenging and complex task since all relevant geo data like streets, objects, information of the landscape etc. have to be known and incorporated into the GIS. Therefore, a geo-object in the geo-based web portal has to contain both the geo-data and the content related data. Geo-data describe the structure of an object in space whereas the content related data provide additional attributes associated with the properties of the object (Dickmann \& Zehner 2001). From the point of the architecture, a web-based map application consists of two essential components - the server and the client part. Typically, the server component is responsible for providing geographical information according to the client's request and returns the data and images suitable for the visualization back to the client application. The client component provides the user with a graphical user interface (GUI). Its main tasks are collecting the user input data and communicating with the server in order to retrieve the information as well as to provide interactive mechanisms for representing analyzing the results. The communication between the client and the sever component via a HTTP port is based on a defined request-response protocol. Typical solutions are implemented using JavaScript, Java applets or Flash and are discussed in more detail in the next section. In this contribution we describe an alternative approach using the Java Applet Technology, Asynchronous JavaScript and XML (Ajax). It's application for offering informations of companies operating in the field of food technology and food industry is shown. In such a way it represents a realization of our recently developed concept of a geo-based web portal (Hartmann et al, 05).}, language = {en} }