scholarly journals Extending the cartographic capabilities of desktop GIS – Implementing less common statistical mapping methods as web services together with students

2021 ◽  
Vol 4 ◽  
pp. 1-8
Author(s):  
Gertrud Schaab ◽  
Christian Stern
Keyword(s):  
Applied Sciences ◽  
Web Services ◽  
Teaching Approaches ◽  
Thematic Maps ◽  
Master Programme ◽  
University Of Applied Sciences ◽  
Thematic Mapping ◽  
Service Oriented ◽  
Statistical Mapping ◽  
Gis Software

Abstract. For various reasons statistical mapping is receiving increased interest within the technological shift towards service-oriented web cartography. At the same time new teaching approaches are required at universities which combine both, the motivating of students to get a grip on active programming while learning also about less common thematic mapping methods. The paper points to those cartographic representation methods of visualizing areal distributions of quantitative area characteristics which are often overlooked either due to not being readily available in GIS software or because they are simply not known. Of the nine methods discussed in regard to their abilities and limitations, five are not readily implemented or supported by the ArcGIS Pro software. Within the new teaching course on web processing services (WPS) as part of the International Geomatics master programme at Karlsruhe University of Applied Sciences, the students learn how to conceptualize, program and publish a WPS by gaining a solution for those less common methods. The alternate band map method serves as teaching example, but students are asked to independently work on other methods, too. The WPS course acts here as an eye-opener for the students to the wider pool of cartographic visualization options, of how to get around the limitations of GIS software, and of how to automate processes including making them available to others. With that we hope to contribute to automatically rendered thematic maps becoming more versatile again.

scholarly journals Training students in Python programming skills and WPS wrapping for geoprocessing tasks by using examples of less commonly applied thematic mapping methods

2021 ◽  
Vol 2 ◽  
pp. 1-10
Author(s):  
Christian Stern ◽  
Gertrud Schaab
Keyword(s):  
Applied Sciences ◽  
Web Services ◽  
Teaching Approach ◽  
Absolute Value ◽  
Hands On ◽  
University Of Applied Sciences ◽  
Thematic Mapping ◽  
Density Map ◽  
Programming Skills ◽  
Python Programming

Abstract. Python programming and the application of web services technology can be considered important skills for geomatics students when looking for employment later. A course on Web Processing Services (WPS) as part of the International Geomatics master programme at Karlsruhe University of Applied Sciences takes this into consideration while using the opportunity of making students aware of less-known thematic mapping methods. Students are introduced to automating a complex geoprocessing task and finally wrapping it into a WPS. It is achieved by following the phases of first conceptualizing the single steps before then using ArcGIS ModelBuilder and Python scripts in combination to build the processing chain. The alternate band map method serves as example in the hands-on exercise. Later students are asked to automate the generation of the geometries for the map face and/or map legend supporting other thematic mapping methods like the square density map or the absolute value raster map. The paper discusses the teaching approach and experiences made so far. Conceptualizing the automatization of a given complex geoprocessing problem proved to be the most challenging part for the students.

scholarly journals The application of algorithm for introduction of the automatization in process of symbol-scale mapping

2010 ◽  
Vol 90 (3) ◽  
pp. 239-256
Author(s):  
Natasa Urosev
Keyword(s):  
Thematic Maps ◽  
Main Subject ◽  
Thematic Map ◽  
Thematic Mapping ◽  
Two Factors ◽  
Gis Software ◽  
Qualitative Characteristics

Beside the main subject, this paper will present principals of average graphical weight of thematic map. The algorithm is based on this subject and also on basics of symbol-scaled(2) mapping. Maps are very often overloaded by symbols. The main goal of thematic mapping is to represent the quantitative and qualitative characteristics of the occurrences in geospace. These two factors are combined in this algorithm. Modern GIS software has possibility to create thematic maps by methods of signs, cartograms and cart diagrams. These are very precise maps and they are presenting distinctive occurrence but also very graphical chaotic with lot of overcastted areas that are overloading the map. These are the reasons why it?s necessary to create this algorithm which would give some balance among boundaries of thematic map area.

A Two Phases Self-healing Framework for Service-oriented Systems

2021 ◽  
Vol 15 (2) ◽  
pp. 1-25
Author(s):  
Amal Alhosban ◽  
Zaki Malik ◽  
Khayyam Hashmi ◽  
Brahim Medjahed ◽  
Hassan Al-Ababneh
Keyword(s):  
Web Services ◽  
A Priori ◽  
Fault Management ◽  
Service Selection ◽  
Exception Handling ◽  
Self Healing ◽  
Service Oriented Architectures ◽  
Service Oriented ◽  
Improved Performance ◽  
High Level

Service-Oriented Architectures (SOA) enable the automatic creation of business applications from independently developed and deployed Web services. As Web services are inherently a priori unknown, how to deliver reliable Web services compositions is a significant and challenging problem. Services involved in an SOA often do not operate under a single processing environment and need to communicate using different protocols over a network. Under such conditions, designing a fault management system that is both efficient and extensible is a challenging task. In this article, we propose SFSS, a self-healing framework for SOA fault management. SFSS is predicting, identifying, and solving faults in SOAs. In SFSS, we identified a set of high-level exception handling strategies based on the QoS performances of different component services and the preferences articled by the service consumers. Multiple recovery plans are generated and evaluated according to the performance of the selected component services, and then we execute the best recovery plan. We assess the overall user dependence (i.e., the service is independent of other services) using the generated plan and the available invocation information of the component services. Due to the experiment results, the given technique enhances the service selection quality by choosing the services that have the highest score and betters the overall system performance. The experiment results indicate the applicability of SFSS and show improved performance in comparison to similar approaches.

PROCESS MODEL ONTOLOGY-BASED MATCHMAKING OF SEMANTIC WEB SERVICES

2011 ◽  
Vol 20 (04) ◽  
pp. 357-370 ◽  
Author(s):  
D. PAULRAJ ◽  
S. SWAMYNATHAN ◽  
M. MADHAIYAN
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Process Model ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
Semantic Web Services ◽  
Functional Part ◽  
Service Oriented ◽  
Concise Description

One of the key challenges of the Service Oriented Architecture is the discovery of relevant services for a given task. In Semantic Web Services, service discovery is generally achieved by using the service profile ontology of OWL-S. Profile of a service is a derived, concise description and not a functional part of the semantic web service. There is no schema present in the service profile to describe the input, output (IO), and the IOs in the service profile are not always annotated with ontology concepts, whereas the process model has such a schema to describe the IOs which are always annotated with ontology concepts. In this paper, we propose a complementary sophisticated matchmaking approach which uses the concrete process model ontology of OWL-S instead of the concise service profile ontology. Empirical analysis shows that high precision and recall can be achieved by using the process model-based service discovery.

FH Münster University of Applied Sciences / Vietnamese Social Sciences

2021 ◽  
Author(s):  
H.L. Cu Si
Keyword(s):  
Social Sciences ◽  
Applied Sciences ◽  
The Road ◽  
University Of Applied Sciences

FH Münster University of Applied Sciences; Lib holding: Item - The Vietnamese Social Sciences at a Fork in the Road

Services and Service Composition – An Introduction (Services und Service Komposition – Eine Einführung)

2008 ◽  
Vol 50 (2) ◽  
Author(s):  
Shahram Dustdar ◽  
Mike P. Papazoglou
Keyword(s):  
Web Services ◽  
Service Composition ◽  
Web Applications ◽  
Future Research ◽  
Basic Principles ◽  
Service Oriented Computing ◽  
Research Challenges ◽  
Internet Computing ◽  
The Future ◽  
Service Oriented

SummaryIn this overview paper, we discuss the basic principles underlying service-oriented computing in general, and (Web) services in particular. We discuss the important differences between (Web) services and Web applications and other models in Internet computing. Finally, we discuss where we see the future research challenges in the area of service composition.

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