An Area‐Based Approach for Estimating Extreme Precipitation Probability

Accurate estimates of heavy rainfall probabilities reduce loss of life, property, and infrastructure failure resulting from flooding. NOAA's Atlas‐14 provides point‐based precipitation exceedance probability estimates for a range of durations and recurrence intervals. While it has been used as an engineering reference, Atlas‐14 does not provide direct estimates of areal rainfall totals which provide a better predictor of flooding that leads to infrastructure failure, and more relevant input for storm water or hydrologic modeling. This study produces heavy precipitation exceedance probability estimates based on basin‐level precipitation totals. We adapted a Generalized Extreme Value distribution to estimate Intensity‐Duration‐Frequency curves from annual maximum totals. The method exploits a high‐resolution precipitation data set and uses a bootstrapping approach to borrow spatially across homogeneous regions, substituting space in lieu of long‐time series. We compared area‐based estimates of 1‐, 2‐, and 4‐day annual maximum total probabilities against point‐based estimates at rain gauges within watersheds impacted by five recent extraordinary precipitation and flooding events. We found considerable differences between point‐based and area‐based estimates. It suggests that caveats are needed when using pointed‐based estimates to represent areal estimates as model inputs for the purpose of storm water management and flood risk assessment.     

Writing the region: Jonathan Couch and the Cornish fauna

Abstract

The county of Cornwall was the subject of an early nineteenth century attempt to compile an exhaustive regional fauna, Jonathan Couch's three volume A Cornish Fauna (1838–44). Although the Fauna was part of a much broader contemporary impulse to document the natural history of Britain, it was a very early example of a zoological study organised by geography rather than faunal group. It therefore required the author to make an explicit defence of its geographical approach and focus. According to Couch the region was the best place from which to build a better understanding of nature and, ultimately, of nature's creator. In particular, careful observations of a naturalist's local fauna could contribute to mid-nineteenth century debates over the distribution and migration of animals, their extinction, and their value to human industry. According to Couch, the county of Cornwall was especially suited to this sort of investigation. Indeed, although little had been done on the Cornish fauna before Couch's own study, his work was the catalyst for a number of other Cornish naturalists over the latter half of the century.     

LOCATION THEORY AND THE MULTI-PLANT FIRM: A FRAMEWORK FOR EMPIRICAL STUDIES

A model is presented to provide for the optimum distribution of manufacturing plants for a multi-plant firm in a market-oriented industry. Independent variables are production costs, transport costs, and density of demand; dependent variables are optimum plant size and market area. It is argued that the model provides a suitable framework for analysing changes over time in the distribution of a firm's plants. The applicability of the model is illustrated with short studies of spatial changes in the fluid milk industry in southern Ontario and the auto assembly industry in the United States.
Nous présentons ici un modèle fournissant la répartition optimale des manufactures pour une entreprise à usines multiples dans une industrie orientée sur les marchés. Nos variables indépendantes sont les coûts de production, les frais de transport, et la densité de la demande; nos variables dépendantes sont les marchés et la grandeur optimale des usines. Nous soutenons que ce modèle foumit un cadre d'analyse acceptable pour étudier les changements dans le temps dans la répartition des usines d'une entreprise. Pour illustrer Fapplicabilité du modèle, nous nous servons de brèves études de changements spatiaux dans l'industrie sud-Ontarienne du lait liquide et 1'industrie de montage des automobiles aux États-Unis.     

A Note on the Extremities of Local Moran's Iis and Their Impact on Global Moran's I

By defining local Moran's I_i as a ratio of quadratic forms and making use of its overall additivity to match global Moran's I, we can identify spatial objects with a strong impact on global Moran's I. First, we concentrate on the spatial properties of local Moran's I_i expressed by the local linkage degree. Depending on whether we use the W- or C-coding of the spatial connectivity matrix, the variance of local Moran's I_i for a small local linkage degree will be either large or small. Note that spatial objects associated with a local Moran's I_i with a large variance affect the global statistic much more than spatial objects associated with a local Moran's I_i with a small variance. Counterintuitively, global Moran's I defined in the W-coding is most influenced by spatial objects with a small number of spatial neighbors. In contrast, spatial objects with a large number of spatial neighbors exert more impact on global Moran's I setup in the C-coding. Second, we investigate the impact of the empirical data on local Moran's I_i and show that local Moran's I_i will only be significant for extreme absolute residuals at and around the reference location. Clusters of average regression residuals cannot be detected by local Moran's I_i. Consequently, spatial cliques of extreme residuals contribute more to significance tests on global autocorrelation.     

Access relative to need for community conservation funding in Australia

ABSTRACT

In a climate of scarce resources for heritage preservation, there is a need to develop principles and methodology for assessing and responding to inequity within the conservation sector. This paper focuses on spatial, or geographic, barriers as one factor determining the accessibility of conservation services. While the case study focuses on the conservation and management of collections of cultural material in Australia, the methodology is globally relevant for advancing the equitable distribution of heritage and conservation resources according to need. Using a statistical analysis of the spatial distribution of 1323 local heritage conservation projects that have been funded by the National Library of Australia’s Community Heritage Grants Program from 1994 to 2017, this study provides a measure of the spatial equality of conservation in Australia. Spatial distribution analysis indicates that the majority of projects funded are located in major cities, with fewer projects funded in regional, remote and very remote areas. An ‘access relative to need’ approach is proposed to counter the current centralisation of the conservation industry. Of particular relevance for international readers is the potential for this methodology to frame studies of the impacts on heritage resulting from climate change and extreme weather events.     

China's Dynamic Industrial Sector: The Automobile Industry

Two leading Beijing- and Singapore-based economic geographers examine the recent developments and spatial change in China's automobile industry (currently the world's third largest). The paper covers changes in market share among major automobile transnational corporations as well as domestic assemblers; industrial restructuring in the form of product diversification (SUVs to hybrid cars) and production concentration; the massive increase in exports of motor vehicles; and the rise of new automobile production centers. Also included in the paper is a case study of the firm Chery to illustrate the development path of Chinese domestic car assemblers. The embeddedness of transnational corporations and deregulation by the Chinese government are advanced as the two major factors that shape the car industry's geographic distribution in China. Journal of Economic Literature, Classification Numbers: D20, F21, L62. 15 figures, 2 tables, 46 references.     

Are new patterns of low‐income distribution emerging in Canadian metropolitan areas?

Recent studies on urban poverty in Canadian cities suggest a growing spatial concentration of poor populations within metropolitan regions. This article assesses trends in the intra‐urban distribution of the poor population from 1986 to 2006 in eight of Canada's largest cities. We consider five well‐known dimensions of segregation, as identified by Massey and Denton (1988) , in order to examine changes in the spatial distribution of poor populations within metropolitan areas: evenness, exposure, concentration, clustering, and centralization. These indices were calculated for low‐income populations at the census tract level using data from five Canadian censuses. Although each metropolitan area has distinctive characteristics, we were able to identify some general trends. The results suggest that, in 2006 compared to 1986, low‐income populations lived in more spatially concentrated areas, which were, at the same time, socioeconomically more homogeneous and more dispersed throughout the metropolitan area. In addition, we observed that over the last twenty years areas of poverty have been located, for the most part, in neighbourhoods adjacent to downtown cores. Nevertheless, we found that poverty has mostly increased in suburban areas located outside inner‐city neighbourhoods. Growing socioeconomic homogeneity and dispersion of low income areas in metropolitan areas reveal new spatial patterns of urban poverty distribution. These findings should be cause for concern as social isolation in the most disadvantaged neighbourhoods could affect the life chances and opportunities for the residents of those areas.     

Learning in districts: Novelty and lock-in in a regional context

This paper deals with the constraints and risks of learning in different types of spatial concentration of related industries and firms. We aim at a better understanding of what makes the difference between local lock-in on the one hand and ongoing creation of novelty on the other. To achieve this purpose, we use Nonaka and Takeuchi's (1995) treatment of knowledge conversion processes and Nooteboom's (2000) cycle of discovery. Hence, we are able to clarify the concept and nature of learning, which in turn provides a basis for specifying different learning effects of two prototypes of spatial concentration: Marshallian and dynamic industrial districts. We show that these two types of industrial districts have multiple, different, and complementary functions in terms of knowledge conversion and knowledge creation. Hence, we can explain why spatial concentration can have positive and negative effects for learning and innovation, and how lock-in can be avoided.     

A Devonian fish fauna from subsurface sediments in the eastern Officer Basin,South Australia

This paper reports the discovery of three of the most iconic New Caledonian endemic genera, Amphorogyne, Paracryphia and Phelline, as dispersed leaf cuticle fossils in the early Miocene of New Zealand. New Caledonia's endemic angiosperm families have given it a reputation as one of the most interesting botanical regions in the world, but unfortunately it has no known pre-Pleistocene Cenozoic plant fossil record. A once more widespread distribution of its key plants in the context of a cooling and drying Neogene world suggests the current vegetation of New Caledonia is the result of contraction, or even a migration, from more southerly landmasses. Thus, New Zealand may have been a source of at least some of New Caledonia's plants.     

The Spatial Evolution of the Polish Biotech Industry: A Path-Dependent Process?

In Poland, similarly to other Central and Eastern European countries, the development of the biotech industry dates back to the late 1980s, when the first private companies were established. The political and economic transformation of 1989 enabled mass development of private enterprises, but over the course of 20 years of development, only a couple of dozens biotech firms have emerged in Poland. The spatial evolution of the industry shows a strong concentration in Poland's six largest urban centres, which are characterized by the best scientific base, access to financial capital, and a well-developed local entrepreneurial culture. Given that all biotech clusters are also important centres of the pharmaceutical industry, despite the fact that there are no strong direct relationships between Poland's biotech and pharmaceutical companies, the authors of this paper put forward the thesis that the institutional environment of the pharmaceutical sector also affects the development of the biotech industry.     

Comparison of Moran's I and Geary's c in Multivariate Spatial Pattern Analysis

This article compares multivariate spatial analysis methods that include not only multivariate covariance, but also spatial dependence of the data explicitly and simultaneously in model design by extending two univariate autocorrelation measures, namely Moran's I and Geary's c. The results derived from the simulation datasets indicate that the standard Moran component analysis is preferable to Geary component analysis as a tool for summarizing multivariate spatial structures. However, the generalized Geary principal component analysis developed in this study by adding variance into the optimization criterion and solved as a trace ratio optimization problem performs as well as, if not better than its counterpart the Moran principal component analysis does. With respect to the sensitivity in detecting subtle spatial structures, the choice of the appropriate tool is dependent on the correlation and variance of the spatial multivariate data. Finally, the four techniques are applied to the Social Determinants of Health dataset to analyze its multivariate spatial pattern. The two generalized methods detect more urban areas and higher autocorrelation structures than the other two standard methods, and provide more obvious contrast between urban and rural areas due to the large variance of the spatial component.     

WITH SPLINTERS (OR STARS) IN OUR EYES: ON READING THE FRANKFURT SCHOOL WITH MARTIN JAY

This mostly admiring review article focuses on Martin Jay's 2020 essay collection entitled Splinters in Your Eye: Frankfurt School Provocations. Though it highlights details and insights from nearly every essay in the collection, the review devotes significant attention to chapter 4, which focuses on the relationship of the Frankfurt School's first-generation scholars with Sigmund Freud. The departure point for my engagement with Jay's fourth chapter is the translation of the German word Trieb (drive) as “instinct” throughout The Standard Edition of the Complete Psychological Works of Sigmund Freud. Although Jay's treatment of Max Horkheimer's, Theodor W. Adorno's, and Herbert Marcuse's recourses to Freudian psychoanalysis emphasizes their abiding commitment to Freud's theory of instinctual forces (over and against objections to his biologism), the question of whether a drive differs from an instinct does not arise. This question therefore offers an occasion to speculate on how distinguishing more firmly between instinct and drive might matter for the Frankfurt School's opposition between first and second nature. Though I praise Jay's decision to include a chapter on Miriam Hansen's Benjaminian revision of the public sphere, I also criticize his practice, in this volume at least, of consigning most scholarship authored by women to the endnotes rather than engaging with it in the main text.     

Writing from the margins: Marina Carr's early theatre

This article analyses Marina Carr's first four plays: Low in the Dark (1989), The Deer's Surrender (1990), This Love Thing (1991) and Ullaloo (1991). It aims to show how Carr seeks to eschew the mimetic conventions of what can be seen as a dominant, patriarchal theatre establishment, marking (and possibly maintaining) her marginal position as a theatre-maker at the time. I argue that Carr, at this point in her career, was engaged in distinctly feminist theatre practices. Materialist feminist discourse provides a useful framework for understanding what the emergent dramatist was trying to achieve and the meaningful possibilities of her work. A study of this phase of Carr's career, encompassing all four works preceding The Mai, has not been offered in research on the dramatist to date. In addition to expanding the history of feminist theatre practice in Ireland, it promotes an enriched understanding of Carr's theatre as a whole.     

Measuring the Scale of Segregation Using k‐Nearest Neighbor Aggregates

Nearly all segregation measures use some form of administrative unit (usually tracts in the United States) as the base for the calculation of segregation indices, and most of the commonly used measures are aspatial. The spatial measures that have been proposed are often not easily computed, although there have been significant advances in the past decade. We provide a measure that is individually based (either persons or very small administrative units) and a technique for constructing neighborhoods that does not require administrative units. We show that the spatial distribution of different population groups within an urban area can be efficiently analyzed with segregation measures that use population count‐based definitions of neighborhood scale. We provide a variant of a k‐nearest neighbor approach and a statistic spatial isolation and a methodology (EquiPop) to map, graph, and evaluate the likelihood of individuals meeting other similar race individuals or of meeting individuals of a different ethnicity. The usefulness of this approach is demonstrated in an application of the method to data for Los Angeles and three metropolitan areas in Sweden. This comparative approach is important as we wish to show how the technique can be used across different cultural contexts. The analysis shows how the scale (very small neighborhoods, larger communities, or cities) influences the segregation outcomes. Even if microscale segregation is strong, there may still be much more mixing at macroscales.     

IS THE MACROSCOPIC CLASSIFICATION OF FLINT USEFUL? A PETROARCHAEOLOGICAL ANALYSIS AND CHARACTERIZATION OF FLINT RAW MATERIALS FROM THE IBERIAN NEOLITHIC MINE OF CASA MONTERO*

Casa Montero is a mining complex located outside Madrid (Spain), dated from the Early Neolithic (c. 5400–5000 cal bc ). An area of some 4 ha has been investigated and some 4000 shafts recorded, of which 324 have been excavated. The characterization of its raw flint materials and the establishment of its diagnostic features are indispensable in the reconstruction of the distribution of the mine's products beyond the immediate site. This work reports the geological study of the mine's Miocene flint layers and their petrological characterization. Archaeological samples from the mine's shafts were classified according to macroscopic features and petrological characteristics.     

Geographic information system‐based edge effect correction for Ripley's K‐function under irregular boundaries

Ripley's K‐function is a test to detect geographically distributed patterns occurring across spatial scales. Initially, it assumed infinitely continuous planar space, but in reality, any geographic distribution occurs in a bounded region. Hence, the edge problem must be solved in the application of Ripley's K‐function. Traditionally, three basic edge correction methods were designed for regular study plots because of simplified geometric computation: the Ripley circumference, buffer zone, and toroidal methods. For an irregular‐shaped study region, a geographic information system (GIS) is needed to support geometric calculation of complex shapes. The Ripley circumference method was originally implemented by Haase and has been modified into a Python program in a GIS environment via Monte Carlo simulation (hereafter, the Ripley–Haase and Ripley–GIS methods). The results show that in terms of the statistical powers of clustering detection for irregular boundaries, the Ripley–GIS method is the most stable, followed by the buffer zone, toroidal, and Ripley–Haase methods. After edge effects of irregular boundaries have been eliminated, Ripley's K‐function is used to estimate the degree of spatial clustering of cities in a given territory, and in this paper, we demonstrate that by reference to the relationship between urban spatial structure and economic growth in China.     

A HISTORIC NEIGHBOURHOOD AS ARTS SPACE: THE LITTLE INDIA EXPERIENCE

Many cities around the world are redeveloping their neighbourhoods as arts and cultural precincts. Urban industrial zones and lower‐income residential areas have taken on new life as arts neighbourhoods in a bid to attract high‐yield visitors, propel their creative industry and brand themselves as attractive to investors and residents. This article has two aims. Conceptually it explores the notion of arts urbanization – the creation of arts spaces in cities and the socio‐spatial dynamics which they embody. Empirically, the concept is tested using the case of Singapore's Arts Housing Scheme. Under this scheme, historic ethnic precincts take on new roles as arts and creative belts. While the scheme has yielded some success by way of fostering spaces of identity and inspiration for artists, it has also generated social concerns and spatial challenges. Singapore's Little India offers an empirical setting to explore this concept. The paper argues that geography matters to the arts and that arts‐led urbanization creates distinct spatial configurations in cities. For this reason, a greater understanding of and research into arts neighbourhoods and their socio‐spatial dynamics are essential if we are to aspire to sustainable and sensitive development of cities and their creative communities.     

History,Sex And Scenography In The Octavia

With the Cambridge commentary by Rolando Ferri (2003) as point of departure, the article examines the claim that the Octavia is dependent on historians of the Flavian reign, but concludes that the case is unproven. As for the alleged allusions to the love poetry of Statius, the article argues that the similarities are coincidental and points instead to the striking parallels between the drama's depiction of the beautiful Poppaea as the darling of Venus and the short-lived Neronian cult of Poppaea as Diva Poppaea-Venus. Focusing on dramaturgy, the final section examines the commonly discarded links between the drama's implied scenography and the rich and varied resources of the imperial stage, concluding that the ignotus at each and every turn is laying out his plot ‘in accordance with the custom of those working for the stage’ (secundum consuetudinem scaenicorum).     

Globalising Economic Governance,Political Projects,and Spatial Imaginaries: Insights from Four Australasian1 Cities

This paper explores how territorial economic governance is discursively constituted in a globalising and neoliberalising world. It acknowledges both the increasingly recognised formative role of spatial imaginaries in economic interventions and the workings of co‐constitutive political projects that link particular imaginaries with political ambitions and policy strategies. Embracing recent calls for comparative ethnographic urban research at the local‐global interface, it explores currently dominant spatial imaginaries across the four Australasian cities of Auckland, Sydney, Melbourne, and Perth. Based on multiple qualitative methods, this study claims that a considerable number of actor's spatial associations and reference points can be related to particular city‐specific governmental projects; Auckland's Super‐City, Sydney's Global and Green City, Melbourne's Liveable City, and Perth's Vibrant City. It is demonstrated how discursive governance techniques such as ‘story‐telling’, benchmarking, and policy transfer have been pivotal in the activation, circulation, and performance of those spatial imaginaries and their transformation into temporarily dominant visions for strategic urban interventions aimed at repositioning urban actors, spaces, and activities. While spatial imaginaries can be related to differently framed global aspirations, the effects of spatial political projects on urban governance and investment trajectories differ significantly across space. Theoretically, the paper stresses the importance of particular conceptions of territorial relations and time‐ and place‐specific institutional mediation in shaping context‐dependent discursive material governance alignments.     

Local Forms of Spatial Analysis

Local forms of spatial analysis focus on exceptions to the general trends represented by more traditional global forms of spatial analysis. There is currently a rapid expansion in the development of such techniques but their history almost exactly parallels that of Geographical Analysis, with the first examples of local analysis appearing in the late 1960s. Indeed, Geographical Analysis has published many of the significant contributions in this field. This paper reviews the development of local forms of spatial analysis and assesses the current situation. Following a discussion on the nature and importance of local analysis, examples are given of local forms of point pattern analysis; local graphical approaches; local measures of spatial dependency; the spatial expansion method; adaptive filtering; multilevel modeling; geographically weighted regression; random coefficients models; autoregressive models; and local forms of spatial interaction models.