Regionalization of landscape pattern indices using multivariate cluster analysis

This project was funded by the Government of Canada through the Mountain Pine Beetle Program, a six-year, $40 million program administered by Natural Resources Canada, Canadian Forest Service. Additional information on the Mountain Pine Beetle Program may be found at: http://mpb.cfs.nrcan.gc.ca.Regionalization, or the grouping of objects in space, is a useful tool for organizing, visualizing, and synthesizing the information contained in multivariate spatial data. Landscape pattern indices can be used to quantify the spatial pattern (composition and configuration) of land cover features. Observable patterns can be linked to underlying processes affecting the generation of landscape patterns (e.g., forest harvesting). The objective of this research is to develop an approach for investigating the spatial distribution of forest pattern across a study area where forest harvesting, other anthropogenic activities, and topography, are all influencing forest pattern. We generate spatial pattern regions (SPR) that describe forest pattern with a regionalization approach. Analysis is performed using a 2006 land cover dataset covering the Prince George and Quesnel Forest Districts, 5.5 million ha of primarily forested land base situated within the interior plateau of British Columbia, Canada. Multivariate cluster analysis (with the CLARA algorithm) is used to group landscape objects containing forest pattern information into SPR. Of the six generated SPR, the second cluster (SPR2) is the most prevalent covering 22% of the study area. On average, landscapes in SPR2 are comprised of 55.5% forest cover, and contain the highest number of patches, and forest/non-forest joins, indicating highly fragmented landscapes. Regionalization of landscape pattern metrics provides a useful approach for examining the spatial distribution of forest pattern. Where forest patterns are associated with positive or negative environmental conditions, SPR can be used to identify similar regions for conservation or management activities.PostprintPeer reviewe

Evaluating urban freight transport policies within complex urban environments

Urban Freight Transport (UFT) entails significant advantages for the economic growth of cities, but can also hamper population quality of life, obstructing vehicles and people movements while exacerbating environmental problems. Many initiatives have been engaged by many city administrators in order to efficiently manage UFT, evaluating different policies at a global scale. From the perspective of operators, most works analyze a limited set of policies or only focus on the benefits of companies. In this work, a decisionmaking process is used to evaluate a large set of UFT policies, through different attributes representing the advantages and limitations of each policy over promoter companies and the society. To do so, an ex-ante procedure in five steps is proposed to classify the policies: (1) attributes definition, (2) attributes weighting, (3) policy-attribute assessment, (4) policy ranking, and (5) feasibility threshold satisfaction. The whole process is supported on consultations to 26 experts regarding shop supply and restocking activities within complex urban environments. Results show a classification of the analyzed policies, according to their suitability for implementation ; which could be extended (directly or with small adjustments) to other contexts, given the flexibility of the decision-making procedure developed.Peer ReviewedPostprint (author's final draft

A methodology for analysing and evaluating narratives in annual reports: a comprehensive descriptive profile and metrics for disclosure quality attributes

There is a consensus that the business reporting model needs to expand to serve the changing information needs of the market and provide the information required for enhanced corporate transparency and accountability. Worldwide, regulators view narrative disclosures as the key to achieving the desired step-change in the quality of corporate reporting. In recent years, accounting researchers have increasingly focused their efforts on investigating disclosure and it is now recognised that there is an urgent need to develop disclosure metrics to facilitate research into voluntary disclosure and quality [Core, J. E. (2001). A review of the empirical disclosure literature. Journal of Accounting and Economics, 31(3), 441–456]. This paper responds to this call and contributes in two principal ways. First, the paper introduces to the academic literature a comprehensive four-dimensional framework for the holistic content analysis of accounting narratives and presents a computer-assisted methodology for implementing this framework. This procedure provides a rich descriptive profile of a company's narrative disclosures based on the coding of topic and three type attributes. Second, the paper explores the complex concept of quality, and the problematic nature of quality measurement. It makes a preliminary attempt to identify some of the attributes of quality (such as relative amount of disclosure and topic spread), suggests observable proxies for these and offers a tentative summary measure of disclosure quality

Disclosure measurement in the empirical accounting literature: A review article

This is the first study to provide an extensive and critical review of different techniques used in the empirical accounting literature to measure disclosure. The purpose is to help future researchers to identify exemplars and to select suitable techniques or to develop their own techniques. It also provides in depth discussion of current measurement issues related to disclosure and identifies gaps in the current literature which future research may aim to cover

URBAN STRUCTURE: ITS ROLE IN URBAN GROWTH, NET NEW BUSINESS FORMATION AND INDUSTRIAL CHURN

Cities are the “engines of growth” because entrepreneurial and cre-ative activities are concentrated in cities. This suggests that cities grow by host-ing new businesses and “churning” industries advantageously. In so doing, cities need to adapt their spatial structure to mitigate negative externalities. Our previous paper (Lee and Gordon 2007) found that the links between urban structure and growth vary across metro size: more clustering in small metros and more dispersion in large metros were associated with faster employment growth. In this paper, we extend our research to investigate to what extent ur-ban spatial structure variables – dispersion and polycentricity – influence net new business formation (NNBF) and industrial “churning” in a cross-section of 79 U.S. metropolitan areas in the 2000s. The results of least squares regression and locally weighted regression analyses are mixed. OLS results for recent years fail to replicate our results for the 1990s. But applying a more powerful LOESS approach does give results for spatial impacts on NNBF and industrial churning that are consistent with the links between spatial structure and urban growth found in the earlier paper.URBAN SPATIAL STRUCTURE, URBAN GROWTH, NET NEW BUSINESS FORMATION (NNBF), INDUSTRIAL CHURN

The handshake : why do governments and firms sign private sector participation deals ? Evidence from the water and sanitation sector in developing countries

This paper uses a new dataset,"WATSAN,"of private sector participation(PSP) projects for water and sanitation in developing countries to examine the determinants of the number of projects signed for each country between 1990 and 2004. The new dataset improves on existing sources, in particular in its coverage of projects with local investors, and provides adequate data for cross-country regression analysis. The authors use a negative binomial regression model to investigate the factors influencing the number of PSP projects in a sample of 60 developing countries with 460 PSP projects. The regression results provide support for the hypotheses that PSP is greater in larger markets where the ability to pay is higher and where governments are fiscally constrained. The authors test several indicators of institutional quality and find that these are generally significant in determining the number of projects signed for each country. Measures of the protection of property rights and the quality of the bureaucracy emerge as the most important institutions that encourage PSP. Rule of law and the control of corruption are significant, albeit at a lower level, while the quality of contract law and political stability are not robustly significant.Private Participation in Infrastructure,Town Water Supply and Sanitation,Investment and Investment Climate,Infrastructure Regulation,Water Supply and Sanitation Governance and Institutions

What do Europeans do at Work? A Task-Based Analysis: European Jobs Monitor 2016

[Excerpt] Europe continues its recovery from the economic slump caused by the global financial crisis in 2008, exacerbated by the euro zone single currency crisis in 2010–2011. In 2014–2015, aggregate employment levels rose faster than at any time since 2008 and over four million new jobs were created in the 28 EU Member States. The fifth annual European Jobs Monitor report looks at employment shifts at Member State and aggregate EU level from the second quarter of 2011 to the second quarter of 2015. Part 1 presents the jobs-based approach, used to describe employment shifts quantitatively (how many jobs were created or destroyed) and qualitatively (what kinds of jobs). This approach relies on breaking employment down into detailed ‘job’ cells, with a job defined as ‘a specific occupation in a specific sector’, for example, a health professional in the health sector, or a skilled craft/tradesman in car manufacturing. A particular focus is placed on the time profile of recent shifts in employment structure. Ranking the jobs according to their wage and educational levels – or a broader multidimensional index of job quality – adds a qualitative dimension to the analysis. In this year’s report, a further level of detail is provided by measuring the intensity involved in carrying out different categories of task: physical, intellectual and social in terms of the job’s content, methods and work organisation, as well as the tools used (such as information and communication technologies (ICT) and machinery). Parts 2 and 3 of the report introduce a new set of indicators on the task content, methods and tools used at work. Derived from international databases on work and occupations, these indicators enable the analysis to go beyond characterising jobs by quality alone – to give a detailed account of what Europeans do at work and how they do it. The indicators provide valuable new insights on the structural differences and recent evolution of European labour markets, as well as a better understanding of labour input in the production process and the changing nature of the skills required. The jobs-based approach has been used since the 1990s to assess the extent to which employment structures in developed economies are polarising, leading to a shrinking middle quintile, or upgrading as the demand for, and supply of, highly qualified workers increases. These are the two main patterns identified in recent analysis of developed economy labour markets, although more recent analysis in the US – corroborated by some evidence in this report – suggests that a downgrading of the employment structure (relatively faster growth at the lower end of the wage distribution) is also emerging as an alternative pattern

The measurement of gender wage discrimination: The distributional approach revisited

This paper presents the advantages of taking into account the distribution of the individual wage gap when analyzing female wage discrimination. The limitations of previous approaches such as the classic Oaxaca-Blinder and the recent distributive proposals using quantile regressions or counterfactual functions are thoroughly discussed. The new methodology presented here relies on Jenkins' (1994) work and proposes the use of poverty and deprivation literature techniques that are directly applicable to the measurement of discrimination. In an empirical application, we quantify the relevance of the glass ceiling and sticky floor phenomena in the Spanish labor market.children distributive analysis, economics of gender, wage discrimination, glass ceiling, sticky floor.

"Labor Mobility and Economic Geography"

This paper investigates the impact of the heterogeneity of the labor force on the spatial distribution of activities. This goal is achieved by applying the tools of discrete choice theory to an economic geography model. We show that taste heterogeneity acts as a strong dispersion force. We also show that the relationship between the spatial distribution of the industry (the wage differential) and trade costs is smooth and inverted U-shaped. Finally, while Rawlsian equity leads to the dispersion of industry, our analysis reveals that efficiency leads to a solution close to the market outcome, although the latter is likely to involve too much agglomeration compared to the former.

Underpaid or Overpaid? Wage Analysis for Nurses Using Job and Worker Attributes

The nursing labor market presents an apparent puzzle. Hospitals report chronic shortages, yet standard wage analysis shows that nursing wages have increased over time and greatly exceed those received by other college-educated women. This paper addresses this puzzle. Data from the Current Population Survey (CPS) are matched with detailed job content descriptors from the Occupational Information Network (O*NET). Nursing jobs require higher levels of skills and more difficult working conditions than do jobs for other college educated workers. A standard CPS-only wage regression shows a registered nurse (RN) wage advantage of .22 log points compared to a pooled male/female group of college-educated workers. Control for O*NET job attributes reduces the RN gap to .08, while an arguably preferable nonparametric estimator produces a wage gap estimate close to zero. We conclude that nurses receive compensation close to long-run opportunity costs, narrowing if not resolving the RN wage-shortage puzzle.nursing, wage differentials, job attributes