Abstract. This paper investigates the problems of cylinder fitting in laser scanning three-dimensional Point Cloud Data (PCD). Most existing methods require full data, do not study presence outliers, and are statistically robust. But especially mobile often has incomplete as street poles for example only scanned from road. Moreover, existence outliers is common. Outliers may occur random or systematic errors, be scattered and/or clustered. In this paper, we present a robust algorithm PCD...

Social media platforms have been increasingly used to express suicidal thoughts, feelings, and acts, raising public concerns over time. A large body of literature has explored the suicide risks identified by people's expressions on social media. However, there is not enough evidence conclude that provides surveillance for without aligning detected with actual behaviors. Corroborating this alignment a crucial foundation prevention intervention through estimating predicting in countries no...

Abstract This paper develops a new method for analyzing the relationship between set of points and another single point, latter which we call reference point. has been discussed in various academic fields, such as geography, criminology, epidemiology. Analytical methods, however, have not yet fully developed, motivated this paper. Our reveals how number varies by distance from point direction. It visualizes spatial pattern relation to describes using mathematical models, statistically...

Reliable and accurate estimation of residential segregation between population groups is important for understanding the extent social cohesion integration in our society. Although there have been considerable methodological advances measurement over last several decades, recently developed measures not widely used literature, part due to their complex calculation. To address this problem, we implemented newly proposed indices R, an open source software environment statistical computing...

As cities adapt to new needs and challenges, their forms change in close relation population dynamics. This article focuses on the link between dynamics evolution of building hull types. The case study is Osaka‐Kobe city‐region Japan, a country globally witnessing an intense decline. Morphometric indicators are coupled with tree‐like classificatory model order label buildings into consistent classes two different periods (2003–2004 2013–2014). class distributions evolutions studied...

This paper analyzes the accuracy of count data estimated by point‐in‐polygon method. A interpolation model is proposed, based on a stochastic distribution points and target zone, in order to represent variety situations. The estimates numerically investigated relation size zone points, optimal location representative discussed. major findings this are as follows: (1) though relative generally increases monotonously with monotoneity often disturbed periodicity spatial configuration source...

This paper aims to develop a model representing cluster perception in the distribution of point objects. Three spatial factors—that is, proximity, concentration, and density change—are considered cause perception. To measure these factors, two notions based on objects are proposed: local relative density. These densities defined as functions location map, indicate how points distributed around location. Cluster is represented probabilistic function measures derived from density, its...

This paper analyses the accuracy of count data transferred from a zonal system to an incompatible zone through areal weighting interpolation method. To treat variety situations in theoretical framework, stochastic models representing are developed. The relationship between estimates and size source zones is analytically investigated by use proposed model. results strongly suggested that smaller give better on wide range systems. effect shape target estimation also numerically examined, found...

Abstract This paper deals with variation in transferred data from a set of irregular zones (called source zones) to regular target through the point-in-polygon method (i.e., that transfers attribute value zone if representative point is included zone). First,the written as mathematical equation. Second, it shown among lattices zones, hexagonal lattice gives minimum variation. However, difference between square and very small. Third, under condition an allowable less than 5 per cent (which...

Evaluating the inequity of healthcare accessibility across demographic groups in post-COVID era is critical importance for an aging society like Japan – it helps to achieve better social equity via distributing resources health planning and policy making. Our study contributes first post-covid evaluation multi-modal Tokyo, Japan, most populated metropolis world. A further novelty goes multi-dimensional examination (i.e. hospitals) by public transit, driving walking horizontal urban space...

Abstract Development in techniques of spatial data acquisition enables us to easily record the trajectories moving objects. Movement human beings, animals, and birds can be captured by GPS loggers. The obtained are analyzed visualization, clustering, classification detect patterns frequently or rarely found trajectories. To extract a wider variety analysis, this article proposes new method for analyzing on network space. first extracts primary routes as subparts topological relations among...

In this paper we show the properties of a spatial hierarchy found in random configuration which points are randomly placed on plane and ranks assigned to these points. First method detecting ranked (not necessarily configuration). Second, using obtain mentioned above, examine its theoretically as well numerically with Monte Carlo simulation. From examination, find that shares more or less similar Christaller's hierarchy. Stated explicitly, shape dominant regions is hexagonal average; areas...

Abstract. This article develops a method for analysing the distribution of urban facilities in terms accessibility. The treats facility accessibility spatiotemporal dimension, as it depends on both spatial and temporal factors, that is, location opening hours facilities. is evaluated by several measures indicating extent concentration with respect to dimension. are standardised statistical framework means comparison spatial, random distributions applied analysis coffee shops Tokyo, Japan....

Geographic information system (GIS) education in Japan lags far behind that Western developed countries. As such the development of systematic GIS Japanese universities, including preparation a standard curriculum, becomes an urgent issue. This article examines present situation and recent trends geographical departments universities. Information about 202 courses offered 39 universities was collected analysed. The results indicate there are mismatches between current draft Standard Core...

The number of children has been gradually decreasing in European and Asian developed countries. Schools have to be closed or integrated keep a suitable educational environment ensure economical efficiency. School relocation planning, however, is not an easy process because it involves various sectors professions. Due the diversity participants ambiguity plan evaluation, takes quite long time reach final agreement. To treat this problem, paper proposes new method decision support for school...

Abstract This paper develops a method for analysing changes in surface, scalar function defined over two-dimensional region. The is based on the topological static surfaces that uses critical points (peaks, bottoms, and cols) their connecting lines. To extend to spatiotemporal domain, four types of primitive events are proposed: (1) generation, (2) disappearance, (3) movement, (4) switch. change surface described by combination these primitives. From two times set cause deduced. They stored...

In this paper I develop an exploratory method for analyzing changes in polygon distributions. Changes are deduced from a set of distributions different times, and represented by directed graph. Three viewpoints representing individual proposed: topology, size, direction. They described qualitatively, used analysis spatiotemporal distribution changes. addition to changes, their sequences analyzed through classification, visualization, calculation summary statistics. The proposed is applied...

This article experimentally investigated the perception of area an open space. In experiment, 3-D stereo dynamic graphics were used to present subjects with a simulated environment in which walked around, thus creating hypothetical reality being actual city. Having through city, conducted two kinds judgment tasks. The results showed that shape and location space affect area. These effects termed width/depth ratio effect visible effect. Three models formulated explain Each model was...