Johannes Scholz

Johannes Scholz
Graz University of Technology | TU Graz · Institute of Geodesy

Professor

About

86
Publications
18,376
Reads
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366
Citations
Introduction
I am Asscociate Professor at Graz University of Technology, Institute of Geodesy, Research Group Geoinformation. Research interests: - spatial-temporal modeling - (spatial) ontology and semantics (applications utilizing Linked Data paradigm and Digital Humanities) - combinatorial optimization in GIS (focus on transport planning) - spatial agent-based simulation - modeling indoor space - land use and land cover modeling
Additional affiliations
April 2015 - present
Graz University of Technology
Position
  • Professor (Assistant)
May 2012 - present
Research Studios Austria
Position
  • MOSIPS - Modeling and Simulation of the impact of public policies on SMEs
Description
  • www.mosips.eu
May 2012 - April 2015
Research Studios Austria
Position
  • Senior Researcher

Publications

Publications (86)
Conference Paper
Full-text available
As part of AMADEE-20, an integrated Mars analog field mission in the Negev Desert in Israel conducted by the Austrian Space Forum, an exploration cascade for the remote sensing of extraterrestrial terrain was implemented. For this purpose, aerial robots were conceptualized , which were used in an iterative process to generate a navigational map for...
Article
Full-text available
This literature review is dedicated to the subject of agent-based modelling for the system of international migration, and of the modelling of policies that are known to aid in its management. The reason for the selection of agent-based modelling as a framework for studying international migration is that the system of international migration prese...
Preprint
Full-text available
A human is a thing that moves in space. Like all things that move in space, we can in principle use differential equations to describe their motion as a set of functions that maps time to position (and velocity, acceleration, and so on). With inanimate objects, we can reliably predict their trajectories by using differential equations that account...
Preprint
While platial representations are being developed for sedentary entities, a parallel and useful endeavour would be to consider time in so-called "platio-temporal" representations that would also expand notions of mobility in GIScience, that are solely dependent on Euclidean space and time. Besides enhancing such aspects of place and mobility via sp...
Article
Full-text available
While platial representations are being developed for sedentary entities, a parallel and useful endeavor would be to consider time in so-called "platio-temporal" representations that would also expand notions of mobility in GIScience, that are solely dependent on Euclidean space and time. Besides enhancing such aspects of place and mobility via spa...
Preprint
Modern tourism in the 21st century is facing numerous challenges. One of these challenges is the rapidly growing number of tourists in space limited regions such as historical city centers, museums or geographical bottlenecks like narrow valleys. In this context, a proper and accurate prediction of tourism volume and tourism flow within a certain a...
Article
Point Pattern Analysis is already used in medical research, socio-economics and a huge number of related fields. Due to the nature of data on historical monuments is apparent to apply these methods in the context of analysing such monuments. The objective of this paper is, to propose explanatory approach to analyse point patterns using the example...
Conference Paper
Full-text available
This paper elaborates on the geospatial semantics of Sup-ply Chain Visibility (SCV) and how a Geospatial Knowledge Graph(GeoKG) helps answering spatio-temporal questions related to the sup-ply chain. An ontology is developed to provide a generic semantic modelfor the SCV domain, based on existing ontologies and ontology designpatterns. Secondly, an...
Conference Paper
Full-text available
Question answering in Geohumanities within the Semantic Web is a broad research field. This work incorporates the investigation, use and extension of existing patterns and ontologies having a space and time dimension to combine historical Linked Places and Linked Traces data. Linked Traces are way to collect historical events and places in a so-cal...
Article
Full-text available
The paper presents an agent‐based modeling and simulation approach to model the forest fuel supply chain for heating purposes (i.e., heating plants). The paper focuses on the simulation of the processes of timber harvesting by forest enterprises and the competition of heating plants for the limited resource of wood chips. In particular, the work id...
Article
Full-text available
The research focuses on detecting tourist flows in the Province of Styria in Austria based on crowdsourced data. Twitter data were collected in the time range from 2008 until August 2018. Extracted tweets were submitted to an extensive filtering process within non-relational database MongoDB. Hotspot Analysis and Kernel Density Estimation methods w...
Article
Full-text available
Working with contemporary, monolithic desktop Geographical Information Systems can be laborious and confusing, especially for non-experts. An alternative for a more user friendly approach to spatial data edition and spatial analysis may be an “app-based” web application that is offering single tasks for the user—“micro applications”. In this paper,...
Chapter
The paper elaborates on an Agent-based Modeling approach for an indoor manufacturing environment—in particular, a semiconductor production plant. In order to maintain a flexible production “line”, there is no conveyor belt, and a mix of different products is present in the indoor environment. With the integration of Industry 4.0 or Smart Manufactur...
Chapter
The paper elaborates on an approach to simulate the effect of public policies regarding thermal energy transition pathways in urban communities. The paper discusses the underlying methodologies of calculating Heating Energy demand of buildings and the rationale for potential zones for thermal energy systems. In order to simulate the effects of publ...
Article
Full-text available
The article presents a map dashboard aimed at enhancing the information flow in the forest-based supply chain (FbSC). We especially focus on the procurement stage and connect the stakeholders in (near) real-time via standardized data models, interfaces and services, as well as using open-source software only. For the communication strategy, we use...
Chapter
Public transport systems – especially demand responsive transport – lack a direct feedback possibility for customers. Contemporary approaches allow post-mortem feedback, where the consumer has to input detailed data of past travel experiences. Hence, it is hard to detect the location and time when and where the feedback was submitted, and in partic...
Article
Full-text available
The role of digital technologies for fostering sustainability and efficiency in forest-based supply chains is well acknowledged and motivated several studies in the scope of precision forestry. Sensor technologies can collect relevant data in forest-based supply chains, comprising all activities from within forests and the production of the woody r...
Article
Full-text available
Buildings have a multifunctional character, which makes it hard to define just one model for all their diverse functions. As these diverse functions are addressed by actors of different perspectives and domain backgrounds, the possibility to exchange available building information would be desirable. Two main models for the creation of building inf...
Article
Full-text available
This paper presents an analysis of the effects of cognitive agents employing selfish routing behavior in traffic networks with linear latency functions. Selfish routing occurs when each agent traveling on a network acts in a purely selfish manner, therefore the Braess Paradox is likely to occur. The Braess Paradox describes a situation where an add...
Conference Paper
Full-text available
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Poster
Full-text available
The Forest-based Supply Chain consists of a temporal sequence of activities from the forest to the customer that transform the raw material – i.e. wood – to marketable forest-based products (e.g. D’Amours et al. 2008). The activities within this specific supply chain are performed by different stakeholders, like forest owners, harvesting enterprise...
Poster
Full-text available
In the Forest-based supply chain different stakeholders work together. In an operational supply chain data are exchanged between the individual stakeholders along with the actual products. However, media breaks may occur (Gronalt et al., 2005). Even if companies along the Forest-based supply chains may use high-sophisticated IT-solutions there is n...
Article
Full-text available
In Zusammenarbeit mit der Holzcluster Stmk Gmbh wurde der Versuch unternommen den Prozess des Holztransportes anhand einer mobilen Applikation zu modernisieren. Hierbei wurde eine App entwickelt, welche den bisherigen Anforderungen des Lieferscheins entspricht und diesen in Zukunft ersetzten kann und soll. Auf diese Weise wurde versucht einen Teil...
Chapter
Full-text available
Intelligente Fertigung oder Industrie 4.0 ist ein Schlüsselkonzept, um die Produktivität und Qualität in industriellen Fertigungsunternehmen durch Automatisierung und datengetriebene Methoden zu erhöhen. Intelligente Fertigung nutzt Theorien cyber-physischer Systeme, dem Internet der Dinge sowie des Cloud-Computing. In dieser Abhandlung konzentrier...
Conference Paper
Collections of linguistic and dialect data often lack a semantic description and the ability to establish relations to external datasets, from e.g. demography, socio-economics or geography. Based on existing projects-the Database of Bava-rian Dialects in Austria and exploreAT!-this paper elaborates on a spatio-temporal Linked Data model for represe...
Article
Full-text available
The concepts of " Smart Cities " and " Smart Manufacturing " are different data-driven domains, although both rely on intelligent information technology and data analysis. With the application of linked data and affordance-based approaches, both domains converge, paving the way for new and innovative viewpoints regarding the comparison of urban tas...
Article
Full-text available
Sustainability and renewable resources are attracting increased attention in the energy supply sector. This paper elaborates on the application of agent-based modelling methods to simulate forest fuel markets and supply chains. More precisely, it aims to simulate the market for wood chips for heating purposes, based on a sustainable forest growth a...
Article
Full-text available
The paper presents a Linked Data approach within a manufacturing organization to foster sharing, reusing, integrating and the collaborative analysis of datasets originating from different business units and heterogeneous data sources. The paper relies on a semiconductor company that serves as case study. The authors elaborate on manufacturing data...
Article
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In manufacturing companies, productivity and efficiency are the main priorities, besides an emphasis on quality issues. The outcome of this research contributes to increasing production quality and efficiency in manufacturing. The article deals with indoor manufacturing environments and the transportation processes of production assets—referred to...
Chapter
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This chapter shows how global environmental changes put society in front of new challenges, and how immediate and intense actions have to be undertaken in order to foster necessary progress in global sustainability research. The technological infrastructure has reached a status of ubiquitous computing and virtually unlimited data availability. Yet,...
Article
Full-text available
Wood is one of the most important backbones of the Austrian economy. The digitalization of this supply chain, which starts with the harvesting process and ends with the final product, holds potential to create a more efficient working process and finally to gain higher transparency. This paper presents an analysis and visualization of the transport...
Conference Paper
Full-text available
Smart Manufacturing or Industry 4.0 is a key approach to increase productivity and quality in industrial manufacturing companies by automation and data driven methods. Smart manufacturing utilizes theories from cyber-physical systems, Internet of Things as well as cloud computing. In this paper, the authors focus on ontology and (spatial) semantics...
Article
Full-text available
The movement and transport of people and goods is spatial by its very nature. Thus, geospatial fundamentals of transport systems need to be adequately considered in transport models. Until recently, this was not always the case. Instead, transport research and geography evolved widely independently in domain silos. However, driven by recent concept...
Chapter
The paper elaborates on the spatial-temporal modeling of linguistic and dialect phenomena. Language Geography—a branch of Human Geography—tries to enhance the visual exploration of linguistic data, and utilizes a number of methodologies from GIScience, whereas publications focusing on analyzing linguistic data in GIScience are hard to find. This re...
Article
Full-text available
A Supply Chain describes a system flow from the raw product to the final product that is delivered to a customer. Hence, the participating organizations, people and transport processes are part of a Supply Chain. The Wood Supply Chain denotes a special Supply Chain that describes the flow of timber. This work focuses on the logistic operations from...
Conference Paper
The Forest-based supply chain (FSC) describes the processes from raw material to final product, and the corresponding transformation from raw wood to marketable forest products. Due to the fact that different actors are present in a FSC there is a need for FSC managers to have a spatial-temporal overview of the current situation in real-time. Despi...
Conference Paper
The term Forest-based supply chain (FSC) describes the process chain from raw material to final product – i.e. the transformation from raw wood to marketable forest products. Planning enables an “optimal” allocation of resources in the FSC with respect to the requirements and constraints of the stakeholders of the FSC. In turn, control describes th...
Conference Paper
Full-text available
Productivity of manufacturing processes in Europe is a key issue. Therefore, smart manufacturing and Industry 4.0 are terms that subsume innovative ways to digitally support manufacturing. Due to the fact, that geography is currently making the step from outdoor to indoor space, the approach presented here utilizes Geographical Information Science...
Conference Paper
Full-text available
Spatial phenomena can be encountered in outdoor and indoor geography-related contexts: The description and analysis of indoor environments is an important factor as research on indoor geography has recently gained a certain momentum. To imbue a clear understanding of indoor space, its definition is a crucial issue as the concept of indoor geography...
Article
Full-text available
This paper elaborates on the effect of predictive memory on cognitive agents that are acting in selfish routing games. Selfish routing describes a situation, where agents are moving in a network with defined latency functions, and act in a strictly selfish manner. Under certain situations – i.e. specific definition of the network, associated latenc...
Chapter
Based on the idea to enhance the cost optimization effects in the forest industry, within the EU funded, multinational project ("FOCUS") a promising harvesting monitoring approach will be realized. The introduction of technical and semantical interoperability efforts shall provide an important building block for enhancing the collaboration capabili...
Article
Full-text available
The paper deals with the theoretical concepts of (spatial) Linked Open Data. In addition, selected research topics related to LOD are highlighted which are currently discussed in the scientific community. Among them are new approaches to integrate Metadata in LOD, the handling of changes over time in LOD as well as the issue of diverging “truths” r...
Conference Paper
Full-text available
Spatial information systems have traditionally been focused on the modelling of outdoor spaces, though spatial phenomena are actually encountered in both outdoor and indoor contexts. In fact, indoor environments play a particularly central role in human activities, and the average person spends approximately 90% of his/her time inside buildings (Je...
Conference Paper
Full-text available
This article highlights an indoor navigation ontology for an indoor production environment. The ontology focuses on the movement of production assets in an indoor environment, to support autonomous navigation in the in-door space. Due to the fact that production environments have a different layout than ordinary indoor spaces, like buildings for of...
Conference Paper
The state-of-the-art in optimisation for forest-based value chains is to target specific processes along the supply chain, but optimisation covering the whole supply chain is a rarity. The objective of the FOCUS project is to address this issue and develop solutions based on pilot cases in several countries across Europe for supply chains covering...
Conference Paper
Full-text available
The research project MOSIPS utilises agent-based models to simulate the effects of public policies on small and medium enterprises (SMEs). Due to the fact that changes in SMEs are directly related to socio-economic phenomena, we propose that there is a relation between socio-economic phenomena and land use and land cover changes. The relation betwe...
Conference Paper
This paper elaborates on the effect of cognitive agents on selfish routing in traffic networks with linear latency functions. Selfish routing occurs when each agent traveling in a network acts purely selfish, and thus the Braess Paradoxon is likely to occur. The Braess Paradoxon describes a situation where an additional low-latency edge is added to...
Chapter
Full-text available
Open Government Data are data that are published in digital format by administrative bodies. The Open Government Data Guidelines should cover how data have to be published to fulfill the requirements of the linked open data approach. The idea of open linked data is that resources published on the Internet can be interlinked and this combination lea...
Conference Paper
Full-text available
The article elaborates on the spatial disaggregation approach of the 1km popula-tion density grid created by the European Forum for Geostatistics in a defined study area where accurate population reference data are available. The paper presents an approach to disaggregate the population grid to target resolution of 100m and 500m respectively and de...
Conference Paper
Full-text available
Space and Time show a strong relationship as spatial processes are always connected to the temporal dimension. Hence, if spatial processes should be mapped accordingly, time is an inevitable dimension in order to understand the genesis of an event or a certain state of the universe of discourse. In the FP7 research project MOSIPS (“Modelling and Si...
Conference Paper
Full-text available
Scheduling is a well known problem from mathematics and has practical relevance espe-cially for allocating limited resources in production processes. Thus, scheduling is general-ly regarded as having a temporal component. This paper elaborates on spatial scheduling problems which Vehicle Routing Problems (VRPs) are members of. In particular we focu...
Chapter
Full-text available
As continuation of EPU-funded community building in Central Asia after openSolarCA’09, in the tradition of the GISCA conference series and under the umbrella of ACA*GIScience, our workshop team organised an academic “Staff Development Workshop” for our partners. We invited Central Asian staff from eleven EPU partner universities in Tajikistan, Kyrg...
Conference Paper
Full-text available
Database research mentions a number of topics that challenge current data storage concepts. Among those topics are: managing and creating collections of unstructured data, horizontal scaling, mobile and cloud computing. As relational databases have limitations due to their underlying relational model, this article shows that upcoming NoSQL database...
Chapter
Full-text available
The contemporary Wood Supply Chain is shaped by legal aspects. Overcoming those legal aspects paves the way for a future Supply Chain that offers more flexibility concerning the relations between stakeholders of the Wood Supply Chain. Hence, optimization methodologies can be employed to develop an optimized plan covering the logistic operations as...
Book
Full-text available
The Rationale of this enerGIS'10 Staff Development Workshop: Dear Participants! We welcome you to our common workshop “enerGIS’10” in Dushanbe. Thanks to everybody from several institutions who has contributed to this event by their continuous inputs! After “openSolarCA’09” the same organizing team presents you the enerGIS’10 workshop using Geogra...
Conference Paper
Full-text available
Zusammenfassung Landbedeckungs-und Landnutzungsdaten stellen eine wesentliche Datengrundlage für die Erfüllung zahlreicher öffentlich-rechtlicher Aufgaben d