Monday, March 26, 2018

GeoS4S-ISS-2 and Dissemination Conference-1 concluded successfully in China!

The GeoServices-4-Sustainability (GeoS4S) project consortium consisting of 10 universities from Europe, China and Thailand conducted International Summer School-2 (ISS-2) at the School of Geography, Nanjing Normal University (NJNU), Nanjing, China from March 5 to 16, 2018. It also included a Dissemination Conference on 10-11 March.

GeoS4S Dissemination Conference Participants pausing after the inaugural session.

The GeoS4S-ISS-2 was designed to enhance geospatial competences of postgraduate students and junior faculty from all the project partners. It attracted 49 participants from 17 different nationalities studying / working at the partner universities in Europe, China and Thailand. The consortium taught 10 modules during these 2 weeks, with about 10 participants attending each module. The teachers from the consortium universities taught the concepts and methods of the modules they had developed and trained the participants in implementing those concepts and methods using geospatial data and GIS software.

The GeoS4S Dissemination Conference-1 was held on 10-11 March which attracted more than 100 participants. Several special guests adorned the conference who include Prof. Guoxiang Chen (President, NJNU), Prof. Guoan Tang (Director, Education and Dissemination Committee of China Association for Geographic Information Society), Professor Lv Guonian (Director, Key Laboratory of Virtual Geography) and Prof. Josef Strobl (Head, Z_GIS).

Dr. Shahnawaz (Coordinator, GeoS4S) convened the ISS-2 and the conference, Prof. A-Xing Zhu hosted the opening ceremony of the conference and Prof. Tao Wang (Dean, School of Geography, NJNU) presided the closing ceremony of GeoS4S-ISS-2.

The consortium had conducted GeoS4S-ISS-1 at the Asian Institute of Technology (AIT), Thailand in May-June 2017 and GeoS4S-ISS-3 will be organised at University of Sustainable Development, Eberswalde, Germany in July 2018. The GeoS4S project will conclude with Dissemination Conference-2 to be held in Bangkok, Thailand in September, 2018. 

The Interfaculty Department of Geoinformatics-Z_GIS of the University ofSalzburg, Austria serves as project coordinator assisted by co-funding from the European Commission under the Erasmus+ Key Action 2 CBHE (Capacity Building in Higher Education) from October 2015 to October 2018.

Friday, March 23, 2018

Willi Mann successfully defended his PhD

Willi Mann successfully defended his PhD Thesis “Efficient Techniques for Set Similarity Join Queries”. While being a student at the Department of Computer Science Willi was associated with the Doctoral College “GIScience” at Z_GIS. 

The DK GIScience has profited from this in-depth research in database science. In particular the focus is to efficiently store and query very large volumes of data. The combination of database research and Geoinformatics will provide  a deeper understanding of fundamental problems in bridging the gap between database systems and GIS software.

In his Thesis, Willi focused on techniques for set similarity join queries. The join is a fundamental operation in databases. A growing number of problems require joins with fuzzy predicates. A class of frequently applied fuzzy predicates is the similarity of two sets. Typical set similarity functions include Jaccard, Cosine, dice, and Overlap, and the Hamming distance. The set similarity join can be executed in offline settings where the input is known up front and online settings, like on streams of timestamped sets. 

Willi’s work resulted in three high level publications which correspond to the three chapters of his thesis:  Willi proposed a new filter, PEL, for offline set similarity join algorithms. Then he extensively compared offline set similarity algorithms and finally he proposed a new algorithm, SWOOP, for set similarity joins on streamed data sources.

We wish Willi all the best for his future career and endeavours!

Wednesday, March 21, 2018

Z_GIS Annual Report 2017 Published

Again at this time of the year we are proud to present Z_GIS' annual report, please get your online copy at >

This brochure introduces our new research projects, documents progress in study programs and outputs from our conferences in 2017. Enjoy reading - and we're glad to hear your comments and inputs!

 Open pdf version >>>

Monday, March 19, 2018

How to improve water management by using space technology

This issue was addressed by the 4th International Conference on the Use of Space Technology for Water Management, which recently took place in Islamabad, Pakistan. More than 100 experts from all over the world discussed cutting-edge tools and findings to better understand, describe and quantify water-related issues using space technology. The conference was organised by the the United Nations Office for Outer Space Affairs, the National Space Agency of Pakistan SUPARCO on behalf of the Government of Pakistan, and the Prince Sultan Bin Abdulaziz International Prize for Water.

The range of applications covered the entire water cycle - extending from precipitation estimation from satellite data to glacier mapping, run-off estimation, erosion and water quality assessment, evapotranspiration calculation and beyond.

In his keynote presentation within the session on case-studies, Lorenz Wendt (Z_GIS) gave insight into the lessons learned by Z_GIS from developing water-related information products and services and providing those to humanitarian actors within the EO4HumEn+ project.

The key to success in many water-related applications of space technology is the integration of remote sensing data with information collected in situ, by experts or measurement systems on the ground, which is both a technical and an organisational challenge. No the less, space technology bears a great potential to tackle the many water-related challenges the world is facing.

Contact: Lorenz Wendt