Piotr Jankowski

Piotr Jankowski
San Diego State University | SDSU · Department of Geography

PhD

About

151
Publications
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6,571
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Publications

Publications (151)
Article
Full-text available
Artykuł przedstawia analizę porównawczą metody przestrzennej analizy wielokryterialnej w dwóch technikach do oceny georóżnorodności wybranych parków narodowych reprezentujących zróżnicowane typy krajobrazu Polski: obszar górski, wyżynny i nizinny. Pierwsza technika dotyczy globalnie ważonej kombinacji liniowej (G-WLC), natomiast druga – lokalnie wa...
Article
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The paper reports on geodiversity assessments of three national parks in Poland, performed independently by experts and volunteers. Each national park selected for the study represents one of three morphogenetically different landscape types: mountains, uplands, and plains. The expert and volunteer assessment data sets were separately processed wit...
Article
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Although research on wildlife species across taxa has shown that males and females may differentially select habitat, sex-specific habitat suitability models for endangered species are uncommon. We developed sex-specific models for Bengal tigers (Panthera tigris) based on camera trapping data collected from 20 January to 22 March 2010 within Chitwa...
Article
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As the need for more broad-scale solutions to environmental problems is increasingly recognized, traditional hierarchical, government-led models of coordination are being supplemented by or transformed into more collaborative inter-organizational networks (i.e., collaboratives, coalitions, partnerships). As diffuse networks, such regional environme...
Article
Visualization of the outputs from sensitivity analyses of spatially explicit models can potentially enhance the perception of the uncertainty in model outputs. However, spatial global sensitivity analysis (GSA) produces multiple output maps, twice as many as the number of input parameters under investigation, which can result in an overwhelming vis...
Article
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Global sensitivity analysis, like variance-based methods for massive raster datasets, is especially computationally costly and memory-intensive, limiting its applicability for commodity cluster computing. The computational effort depends mainly on the number of model runs, the spatial, spectral, and temporal resolutions, the number of criterion map...
Article
Knowledge on when, where and how Public Participation Geographic Information Systems (PPGIS) influence planning decisions has been spotty and incomplete. To fill the gap, we assessed the influence of public land use preferences, obtained through PPGIS, on selected land use planning cases in Finland and Poland. The selected cases ranged in scale fro...
Article
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This paper presents an approach to geodiversity assessment based on spatial multicriteria analysis. Instead of relying solely on weighted linear combination (WLC) for aggregating factor ratings and weights to compute a synthetic measure of geodiversity, the approach employs WLC in concert with its local version called L-WLC to provide a more compre...
Article
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One of the most significant and growing negative pressures on the environment is the amount of generated waste. Surprisingly, the literature on this topic is mainly focused on monitoring the waste weight instead of volume, which is crucial for waste management in urban space. This paper is dedicated to this issue in two ways. First of all the study...
Article
The academic discipline of geography, faced with increasing competition from cognate fields and declining undergraduate enrollments, continues to suffer an identity crisis. In recent decades, many geography programs have instituted department or degree name changes, or otherwise rebranded, without any evidence guiding these decisions. This study be...
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Designing, implementing, and applying agent-based models (ABMs) requires a structured approach, part of which is a comprehensive analysis of the output to input variability in the form of uncertainty and sensitivity analysis (SA). The objective of this paper is to assist in choosing, for a given ABM, the most appropriate methods of SA. We argue tha...
Article
A majority of research on Spatial Multicriteria Analysis (SMCA) has been spatially implicit. Typically, SMCA uses conventional (aspatial) multicriteria methods for analysing and solving spatial problems. This paper examines emerging trends and research frontiers related to the paradigm shift from spatially implicit to spatially explicit multicriter...
Article
Location masking, or geomasking, is a practice typically undertaken by data stewards who wish to release a georeferenced data set without infringing on the privacy of those whose data are involved. With numerous opportunities to transmit our personal locations through electronic devices, individuals have the agency through masking to stem the flow...
Article
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Recent advances in planning support technologies has enabled interactive collaboration in design processes by multiple stakeholder groups. The available technologies collect and store information on both the evolution of design alternatives and the interactions of participants involved in the design process. However, making sense of available proce...
Article
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The spatial diffusion of information is a process governed by the flow of interpersonal communication. The emergence of the Internet and especially social media platforms has reshaped this process and previous research has studied how online social networks contribute to the diffusion of information. Understanding such processes can help devise met...
Article
Fine particle matter (PM $_2.5$ ) has been receiving increasing attention by the government due to its considerable adverse health effects, especially in the north part of China. Even though a number of techniques of estimating PM $_2.5$ exposure have been developed, what is still lacking is a systematic comparison of commonly used techniques bas...
Chapter
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This chapter presents Public Participation GIS (PPGIS) methods and tools based on open data, public input and Web 2 technologies, employed in participatory urban planning processes. The recent focus on sustainable urban development and livability has increased the demand for new data sourcing techniques to capture experiences, preferences and value...
Article
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Background: Hemorrhagic fever with renal syndrome (HFRS) is a zoonosis caused by hantavirus (belongs to Hantaviridae family). A large amount of HFRS cases occur in China, especially in the Heilongjiang Province, raising great concerns regarding public health. The distribution of these cases across space-time often exhibits highly heterogeneous char...
Article
Geomasking techniques displace point data to new locations in order to protect privacy while maintaining overall spatial distributions. If the end users of geomasked data are unaware that the data are masked, there is a risk that they will incorrectly associate individuals at the new locations with the masked data attributes. The probability of cor...
Article
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This paper uses a bibliometric approach to examine the growth of and changes in the Spatial Decision Support Systems (SDSS) field over the past three decades. Bibliographic databases such as Web of Science (WOS) and Scopus provide valuable information on academic disciplines as they contain both the articles published and the articles cited. The ar...
Article
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The paper presents a review of contributions to the scientific discussion on modern methods and tools for public participation in urban planning. This discussion took place in Obrzycko near Poznań, Poland. The meeting was designed to allow for an ample discussion on the themes of public participatory geographic information systems, par-ticipatory g...
Article
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Geo-questionnaires have been used in a variety of domains to collect public preferences, behavioural patterns , and spatially-explicit local knowledge, for academic research and environmental and urban planning. This paper provides an overview of the method focusing on the methodical characteristics of geo-questionnaires including software function...
Article
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Land use evaluation involves careful consideration of several environmental factors and their relative importance quantified by factor weights. Local multi-criteria evaluation provides a mechanism for computing factor (criteria) weights within local neighborhoods that capture spatial heterogeneity and contribute to more accurate evaluation results....
Article
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Geoweb methods offer an alternative to commonly used public participation methods in spatial planning. This paper discusses two such geoweb methods – geo-questionnaire and geo-discussion in the context of their initial applications within the spatial planning processes in Poland. The paper presents legal and organizational framework for the impleme...
Book
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Od kilku lat w Polsce rośnie zainteresowanie partycypacją społeczną w procesach decyzyjnych, w tym także w dziedzinie gospodarki przestrzennej. W książce zaprezentowano dobre praktyki stosowania w gospodarce przestrzennej aplikacji PPGIS takich jak: geoankieta i geodyskusja, posługując się przykładami wdrożeń w miastach i gminach aglomeracji poznań...
Article
The paper presents a computationally efficient meta-modeling approach to spatially explicit uncertainty and sensitivity analysis in a cellular automata (CA) urban growth and land-use simulation model. The uncertainty and sensitivity of the model parameters are approximated using a meta-modeling method called polynomial chaos expansion (PCE). The pa...
Article
Recent years have seen an increase in location privacy research, including the application of geomasking procedures. Geographical masks aim to protect privacy and preserve spatial information through the displacement of point data. False identification, or the mistaken association of data with the incorrect person or household, is an unexplored iss...
Article
Two modes of participatory engagement in local land use planning are contrasted and compared: the asynchronous mode enabled by Geoweb applications for collecting and deliberating public preferences, and the same-place/same-time mode exemplified by public meetings. Using data from a public participation process that took place between June 2014 and...
Article
This paper illustrates a CUDA GPU-based concept to accelerate the computationally intensive calculations of performing spatially-explicit uncertainty and sensitivity analysis in multi-criteria decision-making models. Uncertainty and sensitivity analysis is a two-step approach to validating the robustness of spatial- and non-spatial model solutions....
Article
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Changes in the attitude of local authorities towards the public participation in the decision making processes have prompted development of new methods of such involvement. As far as the urban planning is concerned, of particular potential is the so-called Public Participation Geographic Information Systems (PPGIS). One of the tools used for the pu...
Chapter
Multicriteria decision-making (MCDM) has been a vibrant field of research for over 40 years with practical applications in such diverse domains as business, engineering, health care, environmental management, and regional planning. In geographical sciences, the interest in methods and applications of MCDM began initially in planning and accelerated...
Article
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Dynamiczny rozwój technologii i aplikacji internetowych takich jak Google Maps, Big Maps, Open Street Maps oraz łatwy dostęp do szerokopasmowego Internetu spowodowały, iż znaczna część społeczeństwa zaczęła wykorzystywać aplikacje mapowe w codziennym życiu. Równocześnie, coraz więcej usług świadczonych przez podmioty komercyjne oraz jednostki admin...
Conference Paper
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Spatial multi-criteria decision making (MCDM) applications often do not provide any detailed information about the robustness of results and uncertainties associated with input data. Applications from landscape assessment, natural hazard risk assessment for communities, identification of land use strategies for sustainable regional development, wat...
Article
Recent focus on sustainable urban development and livability has increased the demand for new data sourcing techniques to capture experiences and preferences of urban dwellers. At the same time, developments of geospatial technologies and social media have enabled new types of user-generated geographic information and spatially explicit online comm...
Article
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Sustainable mobility planning is a new approach to planning, and as such it requires new methods of public participation, data collection and data aggregation. In the article we present an overview of Public Participation GIS (PPGIS) methods with potential use in sustainable urban mobility planning. We present the methods using examples from two re...
Conference Paper
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This study presents a GPU-based approach to accelerate the time consuming parts of the variance-based spatially-explicit Uncertainty and Sensitivity Analysis (U-SA). Performance comparisons were conducted in respect to a CPU-based NumPy and a GPU-based CUDA implementation. Preliminary results reported herein suggest that the proposed approach will...
Article
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A Análise Multicritérios tem sido popular entre os usuários de GIS quando o objetivo é a construção de modelos descritivos ou preditivos de um território, em diferentes escalas e para diferentes aplicações. Uma vez que o método tem sido amplamente utilizado durante os últimos vinte anos, e que já existe uma vasta literatura sobre o assunto, cabe de...
Article
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Standardization of methods for data exchange in GIS has along history predating the creation of World Wide Web. The advent of World Wide Web brought the emergence of new solutions for data exchange and sharing including; more recently, standards proposed by the W3C for data exchange involving Semantic Web technologies and linked data. Despite the g...
Article
The conventional methods of Multi-Criteria Evaluation (MCE) fail to account for local variability in criteria values and criteria preferences, disregarding local influence in spatial decision making. Moreover, understanding the interaction between MCE model input and output has paramount importance in terms of the level of confidence in the model r...
Article
Geo-questionnaire involves an integration of sketchable maps with questions, aimed at eliciting public preferences and attitudes about land allocation and services. Respondents can link their answers with corresponding locations on a map by marking points or sketching polygon features. Geo-questionnaires have been used to learn about perceptions an...
Article
Personal trajectory data are increasingly collected for a variety of academic and recreational pursuits. As access to location data widens and locations are linked to other information repositories, individuals become increasingly vulnerable to identification. The quality and precision of spatially linked attributes are essential to accurate analys...
Article
Transportation improvement programming is a process in which substantial resources are allocated to transportation infrastructure projects based on public input. This article reports on individual choice making in the context of a Web-based platform for public participation in transportation improvement programming. Based on the locations of the pr...
Conference Paper
People using mobile devices for making phone calls, accessing the internet, or posting georeferenced contents in social media create episodic digital traces of their presence in various places. Availability of personal traces over a long time period makes it possible to detect repeatedly visited places and identify them as home, work, place of soci...
Article
The topic of geoprivacy is increasingly relevant as larger quantities of personal location data are collected and shared. The results of scientific inquiries are often spatially suppressed to protect confidentiality, limiting possible benefits of public distribution. Obfuscation techniques for point data hold the potential to enable the public rele...
Article
Abstract Task-Technology Fit theory and the Technology Acceptance Model identify system utilization as an important indicator for the performance of complex software systems. Yet, empirical evaluations of user interaction with group decision support systems are scarce and often methodologically underdeveloped. For this study we employed an explorat...
Chapter
This chapter examines the relationship between geodesign and crowdsourcing, informing urban planning by collecting the opinions of stakeholders. It focuses on conditions for facilitating democratic participation in urban planning in light of the Brazilian legal framework, and on possible interactions between participatory urban planning and crowdso...
Conference Paper
Full-text available
The paper presents a method for elicitation of development preferences on an example of a local land use plan in Poznań, Poland. The method involves collecting development preferences in the form of sketched polygon features from a large number of participants using an online geo-questionnaire. The paper outlines a method for producing aggregated m...
Article
Mobility diaries of a large number of people are needed for assessing transportation infrastructure and spatial development planning. Acquisition of personal mobility diaries through population surveys is a costly and error-prone endeavour. We examine an alternative approach to obtaining similar information from episodic digital traces of people’s...
Article
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Podnoszenie jakości zycia jest istotnym celem jednostek i spoleczności. W ostatnich latach cel ten nabiera szczegolnego znaczenia dla miast w kontekście postepującej urbanizacji polączonej z jednoczesnym odplywem mieszkancow na peryferia obszarow metropolitalnych. Autorzy postulują rozszerzenie tradycyjnie stosowanych wskaźnikow ekonomicznych i spo...
Article
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Landslide susceptibility mapping (LSM) is making increasing use of GIS-based spatial analysis in combination with multi-criteria evaluation (MCE) methods. We have developed a new multi-criteria decision analysis (MCDA) method for LSM and applied it to the Izeh River basin in south-western Iran. Our method is based on fuzzy membership functions (FMF...
Article
Full-text available
Landslide susceptibility mapping (LSM) is making increasing use of GIS-based spatial analysis in combination with multi-criteria evaluation (MCE) methods. We have developed a new multi-criteria decision analysis (MCDA) method for LSM and applied it to the Izeh River basin in south-western Iran. Our method is based on fuzzy membership functions (FMF...
Article
Full-text available
Health care accessibility can be measured by the number of prospective patients who could reach a medical facility within a prescribed time limit. The representation of health care demand in estimating accessibility is an important consideration since different spatial aggregations of demand have different consequences with regard to accessibility...
Article
We employ spatially-explicit uncertainty and sensitivity analysis to examine the robustness of land suitability evaluation. We use Monte Carlo simulation to sweep through criteria weight space, where weights are expressed using probability distributions. Multiple output suitability maps are generated and summarized using: an average suitability map...
Article
Many research projects in public-participation geographic information systems focused on the development of software prototypes that were conceptualized to complement traditional forms of public participation. Given the challenges introduced by the heterogeneity of their user base, system design, and decision making process, empirical evaluations o...
Article
The paper presents a decision support approach to solving problems characterized by spatially-explicit decision variables, multiple objectives, and preferences for ancillary decision criteria. The approach offers a three-step workflow, in which Pareto non-dominated solutions to a multi-objective decision problem are generated with a spatially adapt...
Article
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GIS multicriteria decision analysis (MCDA) techniques are increasingly used in landslide susceptibility mapping for the prediction of future hazards, land use planning, as well as for hazard preparedness. However, the uncertainties associated with MCDA techniques are inevitable and model outcomes are open to multiple types of uncertainty. In this p...
Book
Full-text available
GIS multicriteria decision analysis (MCDA) methods are increasingly being used in land-slide susceptibility mapping for the prediction of future hazards, decision making, as well as hazard mitigation plans. However, the uncertainties associated with MCDA techniques are inevitable and model outcomes are prone to multiple types of uncertainty. In thi...
Article
An exploratory study of the potential of georeferenced Twitter data (using tweets from Seattle-area residents over a two-month period) extracts knowledge about people's everyday life.
Article
National borders play an important role in everyday life. Interest in border studies has increased with recent changes in geographical locations of the border or the fluctuation of the permeability of the border between some countries, such as in the European Union. Whether the nations are trying to increase traffic flow of the border or to impleme...
Article
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This paper presents a new approach to deriving preferences assigned to evaluation criteria in geographical multicriteria decision analysis. In this approach, the preferences, expressed by numeric weights, are adjusted by distance measures derived from the explicit consideration of a locational structure. The structure is given by locations of decis...