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Articles 1 - 15 of 15
Full-Text Articles in Social and Behavioral Sciences
A Cutting-Plane Method For Contiguity-Constrained Spatial Aggregation, Johannes Oehrlein, Jan-Henrik Haunert
A Cutting-Plane Method For Contiguity-Constrained Spatial Aggregation, Johannes Oehrlein, Jan-Henrik Haunert
Journal of Spatial Information Science
Aggregating areas into larger regions is a common problem in spatial planning, geographic information science, and cartography. The aim can be to group administrative areal units into electoral districts or sales territories, in which case the problem is known as districting. In other cases, area aggregation is seen as a generalization or visualization task, which aims to reveal spatial patterns in geographic data. Despite these different motivations, the heart of the problem is the same: given a planar partition, one wants to aggregate several elements of this partition to regions. These often must have or exceed a particular size, be …
Insight Provenance For Spatiotemporal Visual Analytics: Theory, Review, And Guidelines, Andreas Hall, Paula Ahonen-Rainio, Kirsi Virrantaus
Insight Provenance For Spatiotemporal Visual Analytics: Theory, Review, And Guidelines, Andreas Hall, Paula Ahonen-Rainio, Kirsi Virrantaus
Journal of Spatial Information Science
Research on provenance, which focuses on different ways to describe and record the history of changes and advances made throughout an analysis process, is an integral part of visual analytics. This paper focuses on providing the provenance of insight and rationale through visualizations while emphasizing, first, that this entails a profound understanding of human cognition and reasoning and that, second, the special nature of spatiotemporal data needs to be acknowledged in this process. A recently proposed human reasoning framework for spatiotemporal analysis, and four guidelines for the creation of visualizations that provide the provenance of insight and rationale published in …
Vgi In Surveying Engineering: Introducing Collaborative Cloud Land Surveying, Ioannis Sofos, Vassilios Vescoukis, Maria Tsakiri
Vgi In Surveying Engineering: Introducing Collaborative Cloud Land Surveying, Ioannis Sofos, Vassilios Vescoukis, Maria Tsakiri
Journal of Spatial Information Science
olunteered geographic information (VGI) has enabled many innovative applications in various scientific fields. This paper introduces a new framework called "collaborative cloud-based land surveying" (CCLS) that uses VGI principles for data sharing among surveyor engineers to boost the productivity and improve the quality of their applications. A cloud-based spatio-temporal data repository is presented, aiming to facilitate the sharing of VGI among surveyor engineers. A fully-functional distributed software application has been developed and used to apply CCLS in a large-scale land surveying project run by the Greek Ministry of Culture, which involves the mapping of the historic center of Athens. Results …
Sailing: Cognition, Action, Communication, Thora Tenbrink, Frank Dylla
Sailing: Cognition, Action, Communication, Thora Tenbrink, Frank Dylla
Journal of Spatial Information Science
How do humans perceive and think about space, and how can this be represented adequately? For everyday activities such as locating objects or places, route planning, and the like, many insights have been gained over the past few decades, feeding into theories of spatial cognition and frameworks for spatial information science. In this paper, we explore sailing as a more specialized domain that has not yet been considered in this way, but has a lot to offer precisely because of its peculiarities. Sailing involves ways of thinking about space that are not normally required (or even acquired) in everyday life. …
Editorial, Matt Duckham
Fundamentals Of Satellite Remote Sensing: An Environmental Approach 2e, Luke Wallace
Fundamentals Of Satellite Remote Sensing: An Environmental Approach 2e, Luke Wallace
Journal of Spatial Information Science
Book review of Fundamentals of Satellite Remote Sensing: An Environmental Approach 2e" by Emilio Chuvieco"
Quantifying Space, Understanding Minds: A Visual Summary Approach, Mark Simpson, Kai-Florian Richter, Jan Oliver Wallgrün, Alexander Klippel
Quantifying Space, Understanding Minds: A Visual Summary Approach, Mark Simpson, Kai-Florian Richter, Jan Oliver Wallgrün, Alexander Klippel
Journal of Spatial Information Science
This paper presents an illustrated, validated taxonomy of research that compares spatial measures to human behavior. Spatial measures quantify the spatial characteristics of environments, such as the centrality of intersections in a street network or the accessibility of a room in a building from all the other rooms. While spatial measures have been of interest to spatial sciences, they are also of importance in the behavioral sciences for use in modeling human behavior. A high correlation between values for spatial measures and specific behaviors can provide insights into an environment's legibility, and contribute to a deeper understanding of human spatial …
Modeling And Manipulating Spacetime Objects In A True 4d Model, Ken Arroyo Ohori, Hugo Ledoux, Jantien Stoter
Modeling And Manipulating Spacetime Objects In A True 4d Model, Ken Arroyo Ohori, Hugo Ledoux, Jantien Stoter
Journal of Spatial Information Science
The concept of spacetime has long been used in physics to refer to models that integrate 3D space and time as a single 4D continuum. We argue in this paper that it is also advantageous to use this concept in a practical geographic context by realizing a true 4D model, where time is modeled and implemented as a dimension in the same manner as the three spatial dimensions. Within this paper we focus on 4D vector objects, which can be implemented using dimension-independent data structures such as generalized maps. A 4D vector model allows us to create and manipulate models …
Cognitively Plausible Representations For The Alignment Of Sketch And Geo-Referenced Maps, Sahib Jan, Angela Schwering, Carl Schultz, Malumbo Chaka Chipofya
Cognitively Plausible Representations For The Alignment Of Sketch And Geo-Referenced Maps, Sahib Jan, Angela Schwering, Carl Schultz, Malumbo Chaka Chipofya
Journal of Spatial Information Science
In many geo-spatial applications, freehand sketch maps are considered as an intuitive way to collect user-generated spatial information. The task of automatically mapping information from such hand-drawn sketch maps to geo-referenced maps is known as the alignment task. Researchers have proposed various qualitative representations to capture distorted and generalized spatial information in sketch maps, however thus far the effectiveness of these representations has not been evaluated in the context of an alignment task. This paper empirically evaluates a set of cognitively plausible representations for alignment using real sketch maps collected from two different study areas with the corresponding geo-referenced maps. …
Topological Augmentation: A Step Forward For Qualitative Partition Reasoning, Matthew P. Dube
Topological Augmentation: A Step Forward For Qualitative Partition Reasoning, Matthew P. Dube
Journal of Spatial Information Science
The current state of the art for partition based qualitative spatial reasoning systems such as the 9-intersection, 9+-intersection, direction relation matrix, and peripheral direction relations is that of the binary set intersection — either empty or non-empty — conveying the intersection (or lack thereof) of an object in the sets deriving the partition. While such representations are sufficient for topological components of objects, these representations are not sufficient for various tasks in qualitative spatial reasoning (composition, representation transfer, converse, etc.) regarding partitions as tiles. Topological augmentation expands the current binary status quo into a system of assigning topological relations between …
Minerva 2017, The Honors College
Minerva 2017, The Honors College
Minerva
This issue of Minerva includes a feature on Honors College research collaboratives; an article on Honors students studying abroad in Singapore and Chile; an article reflecting upon the 15-year anniversary of the Honors College and the importance of mentorship; and articles on Honors students Isaiah Mansour and Aliya Uteova.
Window Inserts And The People Adopting Them: Building Sustainable Communities In Maine, Daniel Sean Mistro
Window Inserts And The People Adopting Them: Building Sustainable Communities In Maine, Daniel Sean Mistro
Electronic Theses and Dissertations
Residents of Maine face a large monetary expense to heat their homes in the winter. In Maine it takes 540 gallons of heating oil each year to heat a typical home [1]. Interior window inserts may be a practical solution to improve comfort, save money, and consume less environmentally harmful fossil fuels during cold winter months. The window inserts discussed in this paper are custom measured to fit into a window and consist of a wooden frame that is wrapped in two layers of polyolefin film and weather stripped for a snug fit. Commercial inserts cost $20-$36/square foot, or approximately …
An Agent-Based Model Of Urban Sprawl: York And Cumberland Counties, Maine, Kaitlyn G. Lavallee
An Agent-Based Model Of Urban Sprawl: York And Cumberland Counties, Maine, Kaitlyn G. Lavallee
Honors College
Urban sprawl is defined as the movement of populations towards the fringes of urban centers, leading to the conversion of rural land to suburban consumption. This expansion in the distribution of populations has many implications for local and state policymakers, business owners and consumers. In Maine, sprawl is particularly prevalent in Cumberland County and York County, where the state’s population is the densest. The objective of this paper is to develop an agent-based model (ABM), which attempts to reflect the movement of households within these counties. These households make decisions sourced in microeconomic theory that are built into the model. …
2017 Film Series: Human Dimensions Of Climate Change, Cindy Isenhour, Jennifer Bonnet
2017 Film Series: Human Dimensions Of Climate Change, Cindy Isenhour, Jennifer Bonnet
Anthropology Faculty Scholarship
In the spring of 2017, Cindy Isenhour and Jen Bonnet coordinated the fourth annual Human Dimensions of Climate Change film series, sponsored by the Department of Anthropology, the Climate Change Institute, and Fogler Library. Each week for three weeks a different film was shown, followed by discussion with campus scholars. A library exhibit accompanied the series and highlighted a wide range of resources related to the topic. This poster represents the series.
Bees Of Maine, With A State Species Checklist, Alison C. Dibble, Francis A. Drummond, Constance Stubbs, Michael Veit, John S. Ascher
Bees Of Maine, With A State Species Checklist, Alison C. Dibble, Francis A. Drummond, Constance Stubbs, Michael Veit, John S. Ascher
Biology and Ecology Faculty Scholarship
We present a new county checklist developed from bee research in Maine since the 1800s. The list contains 278 bee species in 37 genera and 6 families, of which all but 8 are native, with ≥50 taxa each in Andrena and Lasioglossum. Data for 16 counties from publications, museum collections, and recent surveys varied in number of species from 8 (Androscoggin) to 197 (Hancock). Research since 1930 on Vaccinium angustifolium (Lowbush Blueberry) led to many records. Twenty-one species are considered unusual, including 3 first recorded in 2016: Epeoloides pilosulus, Melitta melittoides, and Holcopasites calliopsidis. Maine records …