cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Glycerol oxidehydration to acrylic acid on complex mixed-metal oxides
Creators: name: Chieregato, Alessandro <1987>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: CHIM/04 Chimica industriale

description: The project of this Ph.D. thesis is based on a co-supervised collaboration between Università di Bologna, ALMA MATER STUDIORUM (Italy) and Instituto de Tecnología Química, Universitat Politècnica de València ITQ-UPV (Spain). 
This Ph.D. thesis is about the synthesis, characterization and catalytic testing of complex mixed-oxide catalysts mainly related to the family of Hexagonal Tungsten Bronzes (HTBs). These materials have been little explored as catalysts, although they have a great potential as multifunctional materials. Their peculiar acid properties can be coupled to other functionalities (e.g. redox sites) by isomorphous substitution of tungsten atoms with other transition metals such as vanadium, niobium and molybdenum. 
In this PhD thesis, it was demonstrated how it is possible to prepare substituted-HTBs by hydrothermal synthesis; these mixed-oxide were fully characterize by a number of physicochemical techniques such as XPS, HR-TEM, XAS etc. They were also used as catalysts for the one-pot glycerol oxidehydration to acrylic acid; this reaction might represent a viable chemical route to solve the important issue related to the co-production of glycerin along the biodiesel production chain. Acrylic acid yields as high as 51% were obtained and important structure-reactivity correlations were proved to govern the catalytic performance; only fine tuning of acid and redox properties as well as the in-framework presence of vanadium are fundamental to achieve noteworthy yields into the acid monomer.
The overall results reported herein might represent an important contribution for future applications of HTBs in catalysis as well as a general guideline for a multifaceted approach for their physicochemical characterization.
Strategic decision making in international firms: effect of top management team internationalization on international strategic decision process
Creators: name: Azam, Akbar <1974>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: SECS-P/08 Economia e gestione delle imprese

description: In this research project, I have integrated two research streams on international strategic decisions making in international firms: upper echelons or top management teams (TMT) internationalization research and international strategic decision making process research. Both research streams in international business literature have evolved independently, but there is a potential in combining these two streams of research. The first empirical paper “TMT internationalization and international strategic decision making process: a decision level analysis of rationality, speed, and performance” explores the influence of TMT internationalization on strategic decision rationality and speed and, subsequently, their effect on international strategic decision effectiveness (performance). The results show that the internationalization of TMT is positively related to decision effectiveness and this relationship is mediated by decision rationality while the hypotheses regarding the association between TMT internationalization and decision speed, and the mediating effect of speed were not supported. The second paper “TMT internationalization and international strategic decision rationality: the mediating role of international information” of my thesis is a simple but logical extension of first paper. The first paper showed that TMT Internationalization has a significant positive effect on international strategic decision rationality.  The second paper explicitly showed that TMT internationalization affect on international strategic decision rationality comes from two sources: international experience (personal international knowledge and information) and international information collected from managerial international contacts. For this research project, I have collected data from international software firms in Pakistan. My research contributes to the literature on upper echelons theory and strategic decision making in context of international business and international firms by explicitly examining the link between TMT internationalization and characteristics of strategic decisions making process (i.e. rationality and speed) in international firms and their possible mediating effect on performance.
Properties of N-Laplace Transform Ratio Order and L(N)-Class of Life Distributions
Creators: name: Jarrahiferiz, Jalil
name: Mohtashami Borzadaran, GholamReza
name: Rezaei Roknabadi, Abdolhamid
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: One notion of stochastic comparisons of non-negative random variables based on ratios of nth derivative of Laplace transforms (n-Laplace transform order or shortly ≤n-Lt-r order) is introduced by Mulero et al. (2010). In addition, they studied some of its applications in frailty models. In this paper, we have focused on some further properties of this order. In particular, we have shown that ≤n-Lt-r order implies dual weak likelihood ratio order (≤DWLR order). Moreover, ≤n-Lt-r order, under certain circumstances, implies likelihood ratio order (≤lr order). Finally, the L(n) (L¯(n) )-class of life distribution is proposed and studied. This class reduces to L (L¯)-class if we take n = 0.
description: REVSTAT-Statistical Journal, Vol. 14 No. 3 (2016): REVSTAT-Statistical Journal
Non-Stationary Modelling of Extreme Temperatures in a Mountainous Area of Greece
Creators: name: Caroni, Chrys
name: Panagoulia, Dionysia
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: The generalised extreme value (GEV) distribution is often fitted to environmental time series of extreme values such as annual maxima and minima of temperatures. It is often necessary to allow the distribution’s parameters to depend on time or other covariates (non-stationary GEV). Increasingly, model fitting within the GAMLSS framework is being used as an alternative approach. A case study is presented of temperature extremes in a mountainous area of Greece divided into nine zones by altitude. Model fitting supported non-stationary GEV models for temperature with the location parameter depending linearly on year and zone, showing the expected dependence on altitude along with an increasing trend in annual maxima and declining trend in annual minima. The scale parameter for maxima depended on zone, with greater variability at higher altitudes. The scale parameter for minima increased over time. Fitting non-stationary Inverse Gaussian, Lognormal and Gamma distributions within the GAMLSS framework identified the same dependence on zone and year. There was little difference in goodness of fit of the various distributions.
description: REVSTAT-Statistical Journal, Vol. 14 No. 2 (2016): REVSTAT-Statistical Journal
Effects of stakeholder input on voluntary sustainability standards
Creators: name: Ven, Hamish Van Der
Publisher: name: The University of British Columbia
Year: 2023

description: Voluntary sustainability standards can be powerful tools for incentivizing sustainable production practices. Most standards rely on stakeholder input to gain legitimacy and set levels of achievement for businesses at an appropriate level. Yet, the effects of stakeholder input are contentious. Whereas some see stakeholder input leading to more stringent standards, others believe stakeholder input dilutes standards and renders them toothless. I intervene into this debate through an analysis of the effects of stakeholder comments on eight different voluntary sustainability standards. Drawing on an original dataset of 7945 stakeholder comments submitted during public comment periods between 2012 and 2019, I answer three interrelated research questions. First, who comments on sustainability standards and are some groups better represented than others? Second, what types of input do stakeholders provide? Third, which stakeholder comments result in observable changes to the content of sustainability standards? I find that industry groups are over-represented compared to other stakeholder groups. I also find that comments intended to weaken the stringency of sustainability standards are more likely to be implemented than comments intended to strengthen their stringency or other types of comments. A key implication is that stakeholder input is more likely to weaken or maintain the status quo of sustainability standards than strengthen them.
Extreme Value Analysis
Creators: name: Penalva, Helena
name: Nunes, Sandra
name: Neves, M. Manuela
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: Extreme value theory is dedicated to characterise the behaviour of the extreme observations. The interest is then focused in the tails of the underlying distribution. It is important to test for the adequate shape of the tail, because it influences the estimation of parameters of extreme or even rare events. The aim of this work is to present a brief overview on several tests and parameter estimation procedures available in the literature. They will be applied to daily mean flow discharge rate values in the hydrometric station of Fragas da Torre in the river Paiva, collected from 1946/47 to 2005/06.
description: REVSTAT-Statistical Journal, Vol. 14 No. 2 (2016): REVSTAT-Statistical Journal
Modeling Non-Life Insurance Price for Risk without Historical Information
Creators: name: Charters De Azevedo, Filipe
name: A. Oliveira, Teresa
name: Oliveira, Amilcar
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: How should an insurer price a risk for which there is no history? This work intends to show, step by step, which main mechanisms are needed to capture the tariff model of another insurance company minimizing the risk involved. The document generally deals with the price-making mechanisms in non-life insurance through the GLM regression models — Generalized Linear Model, more precisely the Poisson, Gamma and Tweedie models. Given the complexity of the application of these models in experimental design, it is studied a simpler way to characterize the rate, namely considering the Box–Cox transformation with SUR — Seemingly Unrelated Regression. An orthogonal experimental design to collect information is also presented as well as an application of these methods in the motor industry considering different companies.
description: REVSTAT-Statistical Journal, Vol. 14 No. 2 (2016): REVSTAT-Statistical Journal
Supplementary document for Low-threshold InP quantum dot and InGaP quantum well visible lasers on silicon (001) - 5506150.pdf
Creators: name: Dhingra, Pankul
name: Su, Patrick
name: Li, Brian D.
name: Hool, Ryan
name: Muhowski, Aaron
name: Kim, Mijung
name: Wasserman, Dan
name: Dallesasse, John
name: Lee, Minjoo
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: High-temperature L-I, Comparison with literature, I-V characteristics, Cavity length effects
Risk Analysis and Retrospective Unbalanced Data
Creators: name: Pierri, Francesca
name: Stanghellini, Elena
name: Bistoni, Nicoló
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: This paper considers three different techniques applicable in the context of credit scoring when the event under study is rare and therefore we have to cope with unbalanced data. Logistic regression for matched case-control studies, logistic regression for a random balanced data sample and logistic regression for a sample balanced by ROSE (Random OverSampling Examples, Lunardon, Menardi and Torelli, 2014) are tested. We applied the methods to real data: balance sheets indicators of small and medium-sized enterprises and their legal status are considered. The event of interest is the opening of insolvency proceedings of bankruptcy.
description: REVSTAT-Statistical Journal, Vol. 14 No. 2 (2016): REVSTAT-Statistical Journal
Luftqualität 2017
Creators: name: Dauert, Ute
name: Feigenspan, Stefan
name: Himpel, Thomas
name: Kessinger, Susan
name: Minkos, Andrea
name: Nordmann, Stephan
Publisher: name: My University
Year: 2018
Subjects: subject: Stickstoffdioxid
subject: Ozon
subject: Feinstaub
subject: Luftqualität
subject: Luft
subject: Air

description: Diese Auswertung der Luftqualität im Jahr 2017 in Deutschland basiert auf vorläufigen, noch nicht abschließend geprüften Daten aus den Luftmessnetzen der Bundesländer und des Umweltbundesamtes, Stand 23.01.2018. Aufgrund der umfangreichen Qualitätssicherung in den Messnetzen stehen die endgültigen Daten erst Mitte 2018 zur Verfügung. Die jetzt vorliegenden Daten lassen aber eine generelle Einschätzung des vergangenen Jahres zu. Betrachtet werden die Schadstoffe Feinstaub (PM10 und PM2,5), Stickstoffdioxid (NO2) sowie Ozon (O3), da bei diesen nach wie vor Überschreitungen der geltenden Grenz- und Zielwerte zum Schutz der menschlichen Gesundheit auftreten. Quelle: https://www.umweltbundesamt.de
description: Diese Auswertung der Luftqualität im Jahr 2017 in Deutschland basiert auf vorläufigen, noch nicht abschließend geprüften Daten aus den Luftmessnetzen der Bundesländer und des Umweltbundesamtes, Stand 23.01.2018. Aufgrund der umfangreichen Qualitätssicherung in den Messnetzen stehen die endgültigen Daten erst Mitte 2018 zur Verfügung. Die jetzt vorliegenden Daten lassen aber eine generelle Einschätzung des vergangenen Jahres zu. Betrachtet werden die Schadstoffe Feinstaub (PM10 und PM2,5), Stickstoffdioxid (NO2) sowie Ozon (O3), da bei diesen nach wie vor Überschreitungen der geltenden Grenz- und Zielwerte zum Schutz der menschlichen Gesundheit auftreten.
Die einzigartige Schneckenfauna aus dem Grenzbereich des Mittel- und Oberdevons von Hofermühle
Creators: name: Ellerkamp, Maro-Pascal
name: Becker, Ralph Thomas
name: Schlösser, Manfred
name: Aboussalam, Zhor Sarah
Publisher: name: Archäologie im Rheinland
Year: 2025

description: Archäologie im Rheinland, 2017(2018)
Prevalence, incidence, and risk factors associated with cytomegalovirus infection in healthcare and childcare worker: a systematic review and meta-analysis
Creators: name: Balegamire, Safari J.
name: McClymont, Elisabeth
name: Croteau, Agathe
name: Dodin, Philippe
name: Gantt, Soren
name: Besharati, Amir A.
name: Renaud, Christian
name: Mâsse, Benoît
name: Boucoiran, Isabelle
Publisher: name: BioMed Central
Year: 2022

description: Background Cytomegalovirus (CMV) is transmitted by direct contact with body fluids from infected individuals. Transmission of CMV in households, particularly those with young children, contributes significantly to CMV infection in the general population. However, little is known about the contribution of occupational healthcare or childcare exposure to risk of CMV infection. Objectives To determine CMV seroprevalence, incidence of primary infection, and associated risk factors in healthcare and childcare workers. Methods Six electronic databases were searched systematically for publications on CMV infection in healthcare and childcare workers until March 7, 2022. Two authors independently evaluated the literature for quality and inclusion in our analyses. The pooled results for seroprevalence, incidence, and relative risk (RR) were determined using a random effects model. Heterogeneity among studies was quantified and further investigated in subgroup analysis and meta-regression. Publication bias was assessed using funnel plot. Statistical analyses were preformed using R version 4.05. Results Forty-eight articles were included in this meta-analysis (quality assessment: 18 good, 14 fair, and 16 poor). Pooled CMV seroprevalence was 59.3% (95% CI: 49.8–68.6) among childcare workers and 49.5% (95% CI: 40.3–58.7) among healthcare workers, and pooled incidences of primary CMV infection per 100 person-years were respectively 7.4 (95% CI: 3.9–11.8) and 3.1 (95% CI: 1.3–5.6). RR for primary infection compared to controls were 3.4 (95% CI: 1.3–8.8) and 1.3 (95% CI: 0.6–2.7) for healthcare and childcare workers, respectively. The odds of CMV seropositivity were 1.6 (95% CI: 1.2–2.3) times higher for childcare workers compared to controls, but not significantly different between healthcare workers and controls (0.9; 95% CI: 0.6–1.2). CMV seropositivity in both groups was significantly associated with having one or more children residing at home, marital status, ethnicity, and age. Conclusions Childcare workers, but not healthcare workers, have an increased risk of prevalent and incident CMV infection, a risk that is further increased with the presence of at least one child living at home. These findings suggest that enforcing simple, conventional hygienic measures in childcare settings could help reduce transmission of CMV, and that special precautionary measures for preventing CMV infection may not be required for pregnant healthcare workers. Systematic review registration PROSPERO CRD42020139756
Fossilien aus dem Mitteldevon der Rohrer Mulde bei Lindweiler
Creators: name: Hartkopf-Fröder, Christoph
name: Weber, Hans Martin
name: Gerlach, Renate
name: Heß, Oliver
name: Tenckhoff-Maltry, Dorothea
Publisher: name: Archäologie im Rheinland
Year: 2025

description: Archäologie im Rheinland, 2017(2018)
Reflexionen über Kochs Philosophie
Creators: name: Redaelli, Roberto
Publisher: name: Università degli Studi di Milano
Year: 2016
Subjects: Theoretische Philosophie; Koch; Subjektivitätsthese; Antinomiethese; Subjektivität; Sini (Filosofia teoretica; Koch; Subjektivitätsthese; Antinomiethese; Soggettività; Sini)

description: In seinem Gedankenweg präsentiert Anton Friedrich Koch zwei in der theoretischen Philosophie folgenschwere Thesen: Die Antinomiethese und die Subjektivitätsthese. Mit der Antinomiethese stützt der Philosoph dass das Denken als solches widerspruchsvoll ist. Mit der Antinomiethese drückt Koch die Notwendigkeit der Existenz einer körperlichen Subjektivität aus, die Garant für die Möglichkeit eines raum-zeitlichen Systems. Diese Thesis und ihre Grenzen sind der Schwerpunkt dieses Artikels.

La filosofia di Anton Friedrich Koch presenta due tesi di vasta portata teoretica: la Antinomiethese e la Subjektivitätsthese, con le quali il filosofo afferma rispettivamente la natura originariamente antinomica del nostro pensiero e la necessità di un soggetto corporeo quale garante del sistema spazio-temporale. Queste tesi e i loro limiti sono oggetto del presente contributo.
description: Nóema, No 6-2 (2015): Ricerche
Water and Sanitation: International Perspectives  Global Shared Learning Classroom
Creators: name: Lopez-Gonzalez, Gabriela
name: Garcia Cleto, Arleth
name: Díaz Torres, Osiris
name: Gradilla Hernández, Misael Sebastián
Publisher: name: Zenodo
Year: 2024

description: Tecnologico de Monterrey, in collaboration with water@leeds ran a Global Classroom module on: Clean Water and Sanitation

The Global Classroom programme provided PGRs from Leeds University the opportunity to collaborate in a hybrid setting with Civil Engineering undergraduate students (6th semester), from Tecnológico de Monterrey, Campus Guadalajara in Mexico. 

Programme Objectives

The Global Shared Learning Classroom aims  'to promote global learning by exposing the student to real problems in an international context, allowing the development of skills, fostering diversity, inclusion, and appreciation of other cultures and their own.'

We encourage you to watch the video for a more information on the Global Shared Learning programme's objectives.

Learning objectives

By the end of the programme students will be able to:

Understand cultural differences between Mexico and UK

Contrast educational programmes between the Mexico and UK

Analyse differences in water and sanitation management.

Develop collaboratively writing and presentation by creating a presentation on water and sanitation challenges.

Lead Instructors:

Dr. Misael Sebastián Gradilla Hernandez and Dr. Osiris Díaz Torres, from Tecnológico de Monterrey,  and Gabriela Lopez-Gonzalez, water@leeds coordinator will guide the sessions.
Fractal Based Cancer Modelling
Creators: name: Stehlík, Milan
name: Hermann, Philipp
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: Fractal hypothesis is both challenging and technical issue of mammary cancer. We conduct a simple discrimination on the basis of box-counting dimension. Moreover, we discuss on statistical distributions of fractal dimensions for both mammary cancer and mastopathy. Thereby, we detect significant differences in the underlying distribution between the two groups. A multifractal analysis on the basis of a wavelet based approach has been conducted. Discussion on alternative cancer therapy and cancer prevention is provided.
description: REVSTAT-Statistical Journal, Vol. 14 No. 2 (2016): REVSTAT-Statistical Journal
Skewness into the Product of Two Normally Distributed Variables and the Risk Consequences
Creators: name: Oliveira, Amilcar
name: A. Oliveira, Teresa
name: Seijas-Macias, Antonio
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: The analysis of skewness is an essential tool for decision-making since it can be used as an indicator on risk assessment. It is well known that negative skewed distributions lead to negative outcomes, while a positive skewness usually leads to good scenarios and consequently minimizes risks. In this work the impact of skewness on risk analysis will be explored, considering data obtained from the product of two normally distributed variables. In fact, modelling this product using a normal distribution is not a correct approach once skewness in many cases is different from zero. By ignoring this, the researcher will obtain a model understating the risk of highly skewed variables and moreover, for too skewed variables most of common tests in parametric inference cannot be used. In practice, the behaviour of the skewness considering the product of two normal variables is explored as a function of the distributions parameters: mean, variance and inverse of the coefficient variation. Using a measurement error model, the consequences of skewness presence on risk analysis are evaluated by considering several simulations and visualization tools using R software ([10]).
description: REVSTAT-Statistical Journal, Vol. 14 No. 2 (2016): REVSTAT-Statistical Journal
Estimation Aspects of the Michaelis–Menten Model
Creators: name: L. Toulias, Thomas
name: P. Kitsos, Christos
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: This paper studies the Michaelis–Menten model (MM), which plays an important role in pharmacokinetics, from a theoretical as well as a computational point of view. An analytical method for the nonlinear least squares estimation of the MM is introduced. It is proved that the MM model has not a unique parameter estimation (through the nonlinear least squares), and there is not a unique optimal experimental design and might not have a unique D-optimal design. An iterative process, based on the Sequential approach, is also introduced and tested on various data sets for the MM model. A different approach is also discussed which provides an initial estimate that increases the convergence rate of the Fully Sequential approach. Several examples demonstrate the provided methods.
description: REVSTAT-Statistical Journal, Vol. 14 No. 2 (2016): REVSTAT-Statistical Journal
Development and usability testing of tools to facilitate incorporating intersectionality in knowledge translation
Creators: name: Sibley, Kathryn M.
name: Kasperavicius, Danielle
name: Rodrigues, Isabel B.
name: Giangregorio, Lora
name: Gibbs, Jenna C.
name: Graham, Ian D.
name: Hoens, Alison
name: Kelly, Christine
name: Lalonde, Dianne
name: Moore, Julia E.
name: Ponzano, Matteo
name: Presseau, Justin
name: Straus, Sharon E.
Publisher: name: BioMed Central
Year: 2022

description: Background The field of knowledge translation (KT) has been criticized for neglecting contextual and social considerations that influence health equity. Intersectionality, a concept introduced by Black feminist scholars, emphasizes how human experience is shaped by combinations of social factors (e.g., ethnicity, gender) embedded in systemic power structures. Its use has the potential to advance equity considerations in KT. Our objective was to develop and conduct usability testing of tools to support integrating intersectionality in KT through three key phases of KT: identifying the gap; assessing barriers to knowledge use; and selecting, tailoring, and implementing interventions. Methods We used an integrated KT approach and assembled an interdisciplinary development committee who drafted tools. We used a mixed methods approach for usability testing with KT intervention developers that included semi-structured interviews and the System Usability Scale (SUS). We calculated an average SUS score for each tool. We coded interview data using the framework method focusing on actionable feedback. The development committee used the feedback to revise tools, which were formatted by a graphic designer. Results Nine people working in Canada joined the development committee. They drafted an intersectionality primer and one tool that included recommendations, activities, reflection prompts, and resources for each of the three implementation phases. Thirty-one KT intervention developers from three countries participated in usability testing. They suggested the tools to be shorter, contain more visualizations, and use less jargon. Average SUS scores of the draft tools ranged between 60 and 78/100. The development committee revised and shortened all tools, and added two, one-page summary documents. The final toolkit included six documents. Conclusions We developed and evaluated tools to help embed intersectionality considerations in KT. These tools go beyond recommending the use of intersectionality to providing practical guidance on how to do this. Future work should develop guidance for enhancing social justice in intersectionality-enhanced KT.
Shapiro–Wilk Test with Known Mean
Creators: name: Hanusz, Zofia
name: Tarasinska, Joanna
name: Zielinski, Wojciech
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: An adaptation of the Shapiro–Wilk W test to the case of normality with a known mean is considered. The table of critical values for different sample sizes and several significance levels is given. The power of the test is investigated and compared with the Kolmogorov test and the two-step procedure consisting of the Shapiro–Wilk W and t tests. Additionally, the normalizing coefficients for the test statistic are given.
description: REVSTAT-Statistical Journal, Vol. 14 No. 1 (2016): REVSTAT-Statistical Journal
Bounds for Diagonal and Off-Diagonal Elements of the Hat Matrix in the Linear Regression Model
Creators: name: Mohammadi, Mohammad
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: In the least squares analysis, an appropriate criterion to detect potentially influential observations, either individually or jointly, deals with the values of corresponding Hat matrix elements. Hence, some conditions for which these elements give the extreme values are interesting in the model sensitivity analysis. In this article, we find a new and sharper lower bound for off-diagonal elements of the Hat matrix in the intercept model, which is shorter than those for the no-intercept model. We give necessary and sufficient conditions on the space of design matrix, under which the corresponding Hat matrix elements get desired extreme values.
description: REVSTAT-Statistical Journal, Vol. 14 No. 1 (2016): REVSTAT-Statistical Journal
Hierarchical Dynamic Beta Model
Creators: name: Queiroz Da-Silva, Cibele
name: S. Migon, Helio
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: We develop a hierarchical dynamic Bayesian beta model for modelling a set of time series of rates or proportions. The proposed methodology enables to combine the information contained in different time series so that we can describe a common underlying system, which is though flexible enough to allow the incorporation of random deviations, related to the individual series, not only through time but also across series. That allows to fit the case in which the observed series may present some degree of level shift. Additionally, the proposed model is adaptive in the sense that it incorporates precision parameters that can be heterogeneous no only over time but also across the series. Our methodology was applied to both real and simulated data. The real data sets used in this article include three time series of Brazilian monthly unemployment rates, observed in the cities of Recife, S˜ao Paulo and Porto Alegre, in the period from March 2002 to March 2012. A new parametrization of the precision parameter makes possible the use of the same type of link function for both the mean and the precision parameters, which are then expressed in the (0, 1) interval, providing a more meaningful interpretation in terms of the magnitude of the scale.
description: REVSTAT-Statistical Journal, Vol. 14 No. 1 (2016): REVSTAT-Statistical Journal
Goodness of Fit Tests and Power Comparisons for Weighted Gamma Distribution
Creators: name: Singla, Neetu
name: Jain, Kanchan
name: Kumar Sharma, Suresh
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: In this paper, a weighted version of Gamma distribution known as Weighted Gamma (WG) distribution has been considered. Various tests of goodness of fit viz Kolmogorov–Smirnov, Cram´er–von Mises and Anderson–Darling have been applied to this family. Monte Carlo simulations have been carried out for power calculations. The powers of these tests have been compared which helps in ranking of these goodness of fit tests.
description: REVSTAT-Statistical Journal, Vol. 14 No. 1 (2016): REVSTAT-Statistical Journal
Polymorphs of the n-Type Polymer P(NDI2OD-T2): A Comprehensive Description of the Impact of Processing on Crystalline Morphology and Charge Transport
Creators: name: Karunasena, Chamikara
Publisher: name: Zenodo
Year: 2024

description: Output model structures of the manuscript "Polymorphs of the n-Type Polymer P(NDI2OD-T2): A Comprehensive Description of the Impact of Processing on Crystalline Morphology and Charge Transport".
Supplementary document for Low-threshold InP quantum dot and InGaP quantum well visible lasers on silicon (001) - 5506150.pdf
Creators: name: Dhingra, Pankul
name: Su, Patrick
name: Li, Brian D.
name: Hool, Ryan
name: Muhowski, Aaron
name: Kim, Mijung
name: Wasserman, Dan
name: Dallesasse, John
name: Lee, Minjoo
Publisher: name: Optica Publishing Group
Year: 2021
Subjects: Uncategorized

description: High-temperature L-I, Comparison with literature, I-V characteristics, Cavity length effects
General Multivariate Dependence using Associated Copulas
Creators: name: Salazar Flores, Yuri
Publisher: name: REVSTAT-Statistical Journal
Year: 2016

description: This paper studies the general multivariate dependence and tail dependence of a random vector. We analyse the dependence of variables going up or down, covering the 2 d orthants of dimension d and accounting for non-positive dependence. We extend definitions and results from positive to general dependence using the associated copulas. We study several properties of these copulas and present general versions of the tail dependence functions and tail dependence coefficients. We analyse the perfect dependence models, elliptical copulas and Archimedean copulas. We introduce the monotonic copulas and prove that the multivariate Student’s t copula accounts for all types of tail dependence simultaneously while Archimedean copulas with strict generators can only account for positive tail dependence.
description: REVSTAT-Statistical Journal, Vol. 14 No. 1 (2016): REVSTAT-Statistical Journal
Marginal Homogeneity Model for Ordered Categories with Open Ends in Square Contingency Tables
Creators: name: Aktas, Serpil
name: Wu, Song
Publisher: name: REVSTAT-Statistical Journal
Year: 2015

description: A marginal homogeneity model tests whether the row and column distributions of a square contingency table have the same sample margins. However, for variables with ordered categories, the marginal homogeneity model does not take into account the ordering information, leading to significant loss of power. Score-based tests have been proposed for ordinal variables. In this paper, we extend the idea of scores and propose a new method based on the standardized scores to test the marginal homogeneity for ordered categories with open ends. Our simulation studies demonstrate that our proposed scores is more powerful than the usual scores.
description: REVSTAT-Statistical Journal, Vol. 13 No. 3 (2015): REVSTAT-Statistical Journal
Designing Place: An archaeology of the Western District
Creators: name: Edquist, Harriet
name: Vaughan, Laurene
name: Byrne, Lisa
Publisher: name: RMIT University
Year: 2024
Subjects: classificationCode: 330102
subject: Architectural design
classificationCode: 330399
subject: Design not elsewhere classified

description: RESEARCH BACKGROUND: Harriet Edquist was one of three editors of Designing Place: An archaeology of the Western District. Edquist also wrote a substantial scholarly essay in the book: 'Stony Rises: The Formation of a Cultural Landscape' pp. 62-78. The project made a significant contribution to critical, creative and historical understandings of the complexity of place making. RESEARCH CONTRIBUTION: The editorial team, of which Edquist was a member, designed a text that embraces this complexity through its selection of contributors who together provided a multi-disciplinary reading of the culturally rich, geologically remarkable and politically contested Western District of Victoria. They included indigenous and non-indigenous theorists and practitioners from the sciences, humanities, the arts and design and their contributions reflected their varying practices. In addition, the book's designer was an important factor in the success of the published artefact, adding a significant layer of interpretation to the assembled contributions, and the quality of the book's design has been noted by many. RESEARCH SIGNIFICANCE: Designing Place has been reviewed in academic and popular contexts such as Landscape Architecture Australia, regional ABC Radio and by academic peers who have commended it for providing a groundbreaking model for our understanding cultural landscapes.
Generalized Least Squares and Weighted Least Squares Estimation Methods for Distributional Parameters
Creators: name: Mert Kantar, Yeliz
Publisher: name: REVSTAT-Statistical Journal
Year: 2015

description: Regression procedures are often used for estimating distributional parameters because of their computational simplicity and useful graphical presentation. However, the resulting regression model may have heteroscedasticity and/or correction problems and thus, weighted least squares estimation or alternative estimation methods should be used. In this study, we consider generalized least squares and weighted least squares estimation methods, based on an easily calculated approximation of the covariance matrix, for distributional parameters. The considered estimation methods are then applied to the estimation of parameters of different distributions, such as Weibull, log-logistic and Pareto. The results of the Monte Carlo simulation show that the generalized least squares method for the shape parameter of the considered distributions provides for most cases better performance than the maximum likelihood, least-squares and some alternative estimation methods. Certain real life examples are provided to further demonstrate the performance of the considered generalized least squares estimation method.
description: REVSTAT-Statistical Journal, Vol. 13 No. 3 (2015): REVSTAT-Statistical Journal
Bayesian and Non-Bayesian Interval Estimators for the Poisson Mean
Creators: name: Nadarajah, S.
Publisher: name: REVSTAT-Statistical Journal
Year: 2015

description: Seventeen different confidence intervals for the Poisson mean are compared using simulations and a real data application. The interval estimators include the Wald interval estimator, the score interval estimator, the exact interval estimator, the bootstrap interval estimator, the equal tails credible interval estimator, Jeffreys prior credible interval estimator, the HPD credible interval estimator and the relative surprise credible interval estimator. Recommendations for choosing among the seventeen intervals are given for different sample sizes and different Poisson means.
description: REVSTAT-Statistical Journal, Vol. 13 No. 3 (2015): REVSTAT-Statistical Journal
Failure-Time with Delayed Onset
Creators: name: Yu Wong, Man
name: Cox, D.R.
Publisher: name: REVSTAT-Statistical Journal
Year: 2015

description: A special distribution is suggested for the analysis of survival data in which there is a long random delay before the onset of the terminal process. Estimation by the method of moments and by maximum likelihood is compared.
description: REVSTAT-Statistical Journal, Vol. 13 No. 3 (2015): REVSTAT-Statistical Journal
Eupetale trichoa Flowers 2021, new combination
Creators: name: Flowers, R. Wills
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Eupetale
Eupetale trichoa

description: Eupetale trichoa (Gistel, 1848), new combination
 Lycaste trichoa Gistel 1848: 404.
 Prionodera metallica Jacoby 1884: 128.
 Type Material. Neotype, female (with ovipositor and spermatheca in microvial), here designated, “[red] Type 9494/1st Jacoby Coll./[handwritten] Type/Amazon/ Lycaste trichoa Gistel [printed] R.W. Flowers 2002/[handwritten] HOLOTYPE Prionodera metallica Jacoby [printed] R.W. Flowers 2002”. Deposited in MCZ.
 Additional Material Examined. (1♀, NHMB) Brazil, Maués.
 Diagnosis. Females have the spurs on sternum VII slender and curved (Flowers 2003), the elytra have large raised costae on the basal calli, and the punctation on the apical half of the elytra forms separate geminate striae (see images of the holotype of P. metallica in MCZbase 2021).
description: Published as part of Flowers, R. Wills, 2021, A New Genus for Two Orphaned Species of Lycaste Gistel (Coleoptera: Chrysomelidae: Eumolpinae), pp. 700-701 in The Coleopterists Bulletin 75 (3) on page 700, DOI: 10.1649/0010-065X-75.3.700, http://zenodo.org/record/13251414
Ansätze zur Bewertung und Darstellung der nationalen Emissionsentwicklung unter Berücksichtigung des EU-ETS
Creators: name: Gores, Sabine
name: Graichen, Jakob
Publisher: name: My University
Year: 2017
Subjects: subject: Emissionsanalyse
subject: Emissionsbilanz
subject: Bewertung
subject: Bewertungsverfahren
subject: Grenzwerteinhaltung
subject: Grenzwertüberschreitung
subject: Grenzwert
subject: Klimaschutzziele
subject: EU ETS
subject: Gesetz über den Handel mit Berechtigungen zur Emission von Treibhausgasen
subject: Effort Sharing Decision
subject: Emissionshandel
subject: Europäischer Emissionshandel
subject: Klima | Energie

description: Deutschland hat sich auf verschiedenen Ebenen zur Emissionsminderung verpflichtet: Neben den internationalen (UN) gibt es die europäischen Klimaschutzziele, die durch das europäische Emissionshandelssystem (ETS) und die Effort-Sharing-Entscheidung (ESD) rechtlich umgesetzt wurden. Außerdem gelten die nationalen Klimaschutzziele des Energiekonzepts von 2010. Der Bericht erläutert die Ausgestaltung und Unterschiede dieser Ziele für den Zeitraum 2013 - 2020. Außerdem werden verschiedene Ansätze zur Berechnung eines nationalen ETS-Budgets dargestellt, diskutiert und angewendet, um Fragen nach der Handelsbilanz Deutschlands im ETS, dem Verhältnis von deutschen Emissionen und deutschem ETS-Budget und der Vergleichbarkeit vom europäischen und nationalen Minderungsziel für 2020 zu beantworten. Quelle: http://www.umweltbundesamt.de/
description: Deutschland hat sich auf verschiedenen Ebenen zur Emissionsminderung verpflichtet: Neben den internationalen (⁠UN⁠) gibt es die europäischen Klimaschutzziele, die durch das europäische Emissionshandelssystem (ETS) und die Effort-Sharing-Entscheidung (ESD) rechtlich umgesetzt wurden. Außerdem gelten die nationalen Klimaschutzziele des Energiekonzepts von 2010. Der Bericht erläutert die Ausgestaltung und Unterschiede dieser Ziele für den Zeitraum 2013 - 2020. Außerdem werden verschiedene Ansätze zur Berechnung eines nationalen ETS-Budgets dargestellt, diskutiert und angewendet, um Fragen nach der Handelsbilanz Deutschlands im ETS, dem Verhältnis von deutschen Emissionen und deutschem ETS-Budget und der Vergleichbarkeit vom europäischen und nationalen Minderungsziel für 2020 zu beantworten.
Legal Risk Management Solutions for Community Supported Agriculture in Maryland
Creators: name: Suri, Mayhah
name: Goeringer, Paul
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: community supported agriculture
local food
risk management
maryland department of agriculture
USDA Grant

description: Highlights the results of a survey conducted in the summer of 2014 by Maryland Department of Ag looking at the use of contracts and other risk management tools utilized by CSA operators in Maryland.  The report also highlights workshops and materials developed by the Department of Agricultural and Resource and the Ag Law Education Initiative conducted in the winter of 2015.  Finally, the report highlights state programs that verify CSA operators in California.
Aeolus melliculus Candeze 1859
Creators: name: Ruzzier, Enrico
name: Tomasi, Filippo
name: Platia, Giuseppe
name: Pulvirenti, Edoardo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Elateridae
Aeolus
Aeolus melliculus

description: Aeolus melliculus Candèze, 1859  (Fig. 2A)
 Origin. Neotropical.
 Palearctic Distribution. Portugal (Azores) (Cate 2007); Portugal, Cyprus (Mertlik 2012); Spain (Zapata de la Vega et al. 2013); Italy (Jarzabek-Müller 2019).
 Italian Records. Tuscany, Elba Island, Portoferraio (Livorno), loc. S. Giovanni 10.VI.2016, leg. L. Forbicioni, 1 ex (LFPC) (Jarzabek-Müller 2019); Lazio, near Tor San Lorenzo (Roma), 41.5633013, 12.5648635, 5.XII.2019, leg. V. Viglioglia, 1 ex (VVPC). Tuscany, Elba Island, Portoferraio (Livorno), loc. S. Giovanni, 42.801016, 10.313207, 26.XI.2019, leg. L. Forbicioni, 2 exx (LFPC).
 Note. All the specimen from Elba Island were collected in a flooded cultivated field, sifting plant debris. The specimen from Tor San Lorenzo was hand collected inside a private butterfly house set up with exotic plants. In both cases a plant nursery was in close contact with the discovery site.
description: Published as part of Ruzzier, Enrico, Tomasi, Filippo, Platia, Giuseppe & Pulvirenti, Edoardo, 2021, Exotic Elateridae (Coleoptera: Elateroidea) in Italy: An Overview, pp. 673-679 in The Coleopterists Bulletin 75 (3) on page 675, DOI: 10.1649/0010-065X-75.3.673, http://zenodo.org/record/13251418
Taylor Property in Bilinear Models
Creators: name: Gonçalves, E.
name: Martins, C.M.
name: Mendes-Lopes, N.
Publisher: name: REVSTAT-Statistical Journal
Year: 2015

description: The aim of this paper is to discuss the presence of the Taylor property in the class of simple bilinear models. Considering strictly and weakly stationary models, we deduce autocorrelations of the process and of its square and analyze the presence of the Taylor property in non-negative bilinear models considering several error process distributions, which are chosen according to the kurtosis value. For each one of these error process distributions, the class of parameterizations for the corresponding bilinear model satisfying Taylor property is obtained. The analysis of the relationship between the Taylor property and leptokurtosis in these bilinear processes allows to conclude that this property is a consequence of heavy tailed model distributions. With the goal of extending this research to real valued bilinear models, a simulation study is developed in a class of such models with symmetrical innovations.
description: REVSTAT-Statistical Journal, Vol. 13 No. 3 (2015): REVSTAT-Statistical Journal
Forecasting Mortality Rate by Singular Spectrum Analysis
Creators: name: Mahmoudvand, Rahim
name: Alehosseini, Fatemeh
name: Canas Rodrigues, Paulo
Publisher: name: REVSTAT-Statistical Journal
Year: 2015

description: Singular spectrum analysis (SSA) is a relatively new and powerful non-parametric time series analysis technique that has demonstrated its capability in forecasting different time series in various disciplines. In this paper, we study the feasibility of using the SSA to perform mortality forecasts. Comparisons are made with the Hyndman–Ullah model, which is a new powerful tool in the field of mortality forecasting, and will be considered as a benchmark to evaluate the performance of the SSA for mortality forecasting. We use both SSA and Hyndman–Ullah models to obtain 10 forecasts for the period 2000–2009 in nine European countries including Belgium, Denmark, Finland, France, Italy, The Netherlands, Norway, Sweden and Switzerland. Computational results show a superior accuracy of the SSA forecasting algorithms, when compared with the Hyndman–Ullah approach.
description: REVSTAT-Statistical Journal, Vol. 13 No. 3 (2015): REVSTAT-Statistical Journal
Bayesian Approach for Joint Modeling of Skew-Normal Longitudinal Measurements and Time to Event Data
Creators: name: Baghfalaki, Taban
name: Ganjali, Mojtaba
Publisher: name: REVSTAT-Statistical Journal
Year: 2015

description: Joint modeling of longitudinal measurements and survival time has an important role in analyzing medical data sets. For example, in HIV data sets, a biological marker such as CD4 count measurements is considered as a predictor of survival. Usually, longitudinal responses of these studies are severely skew. An ordinary method for reducing the skewness is the use of square root or logarithm transformations of responses. In most of the HIV data sets, because of high rate of missingness, skewness is remained even after using the transformations. Therefore, a general form of distributions for considering skewness in the model should be used. In this paper, we have used multivariate skew-normal distribution to allow a flexible model for considering non-symmetrically of the responses. We have used a skew-normal mixed effect model for longitudinal measurements and a Cox proportional hazard model for time to event variable. These two models share some random effects. A Bayesian approach using Markov chain Monte Carlo is adopted for parameter estimation. Some simulation studies are performed to investigate the performance of the proposed method. Also, the method is illustrated using a real HIV data set. In these data, longitudinal outcomes are skew and death is considered as the event of interest. Different model structures are developed for analyzing this data set, where model selection is performed using some Bayesian criteria.
description: REVSTAT-Statistical Journal, Vol. 13 No. 2 (2015): REVSTAT-Statistical Journal