74,891 Works

RDM Technical Infrastructure Components and Evaluations

John A. Lewis
Components of the RDM Infrastructures established by higher education institutions are briefly considered. The component function, the software / platform underlying the component and component interoperability are described, any evaluations identified, and institutions employing the component, particularly in an RDMI context, are noted. The list of components is not exhaustive, the most relevant and popular are reviewed, and the components are loosely categorised by function so there may be considerable overlap. Several of the JISC...

Institutional Research Data Management Technical Infrastructures

John A. Lewis
This document lists UK Universities that have established RDM technical infrastructures, to some extent (including pilots), and briefly describes the main components of the infrastructure. A number of other universities that are planning such infrastructures, and some that are hosting discipline based repositories, are also listed and the infrastructure briefly described.

Making sense of cancer data: Implications for personalized therapy and cancer biology

A research proposal submitted along with independent postdoc fellowship applications

Pulse Chromatographic Studies of Adsorption of CO2, CH4, and N2 Using Amine Functionalized Polystyrene Adsorbents

, Parminder Kaur K. S. Heer, Rajesh B. Biniwale &
Adsorption of CO2, CH4, and N2 was investigated using pulse concentration chromatography on polystyrene functionalized by covalently attached diethanolamine, dimethylamine, imidazole, and N-methyl piperazine. The adsorption equilibrium constants at different temperatures were estimated by fitting the experimental chromatograms into a non-linear equilibrium dispersive chromatography model using gPROMS. Axial dispersion was found to be the controlling mechanism for dispersion of the chromatograms. The heat of adsorption and corresponding equilibrium selectivities were determined from the adsorption equilibrium...

Neurodegenerative Diversity in human cortical contusion: Histological analysis of tissue derived from decompressive craniectomy

David Riascos, Efraín Buriticá, Mauricio Palacios, , , Francisco Guzmán, Norberto Garcia-Cairasco, , Martha Escobar & Hernán Pimienta
The principal aim in the management of patients with cerebral contusion (CC) following severe traumatic brain injury (TBI) is the prevention, amelioration, and treatment of secondary neuronal dysfunction and pathology. Distinguishing between irreversibly damaged and surviving tissue could have considerable therapeutic and prognostic implications for patients. To characterize structurally the neuronal compartment of the contused region in samples derived from patients who suffered severe TBI and were subjected todecompressive craniectomy, we used NeuN, a neuronal...

Dramatic Improvement in Ionic Conductivity and Water Desalination Efficiency of SGO Composite Membranes

Swati Gahlot, Prem P. Sharma &
Energy efficient membranes of SGO (Sulfonated Graphene Oxide) into SPES (Sulfonated Polyethersulfone) matrix have been prepared containing different weight content of SGO. Proton conductivity and water retention capacity of membranes increases by increasing SGO while degree of swelling decreases. TEM micrograph shows the uniform distribution of SGO throughout the membrane. SGO-5 membrane shows the maximum proton conductivity (5.8 x 10−2 S/cm), which is almost double to the SPES with higher stability. SGO-5 membrane shows 4.73...

Quantitative assessment of the sensitivity to desertification in the Bradano River basin (Basilicata, southern Italy)

Filomena Canora, Annachiara D'Angella & Antonello Aiello
Desertification is a complex environmental phenomenon that affects many regions worldwide, including the Mediterranean area. Its effects, primarily resulting from climate variations and also influenced by human-induced changes, impact upon potential regional progress due to significant economic losses, social problems and ecological damage. The aim of this study was the identification of sensitive areas to desertification at watershed scale, in the Bradano River basin (Basilicata, southern Italy). The analysis was carried out by means of...

Quantitative assessment of the sensitivity to desertification in the Bradano River basin (Basilicata, southern Italy)

Filomena Canora, Annachiara D'Angella & Antonello Aiello
Desertification is a complex environmental phenomenon that affects many regions worldwide, including the Mediterranean area. Its effects, primarily resulting from climate variations and also influenced by human-induced changes, impact upon potential regional progress due to significant economic losses, social problems and ecological damage. The aim of this study was the identification of sensitive areas to desertification at watershed scale, in the Bradano River basin (Basilicata, southern Italy). The analysis was carried out by means of...

Optimizing planting density for production of high-quality apple nursery stock in China

, , , , , , &
In China, apple (Malus × domestica Borkh.) nursery stock is generally of low quality because of extremely high planting density. The objective of this study was to determine the optimum planting density of 2-year-old grafted apple trees. Tree growth (height, trunk diameter, leaf area index) increased as density decreased. Trees grown at high densities (14.3–50 plants/m2) were the shortest with the smallest trunk diameters and leaf areas, whereas trees grown at lower densities (4.8–10 plants/m2)...

Kinetics and Mechanism of Cerium(IV) Oxidation of Fosfomycin Disodium Salt - an Antibiotic Drug in Acid Perchlorate Solutions

Laxmi N. Jattinagoudar, , &
The kinetics of the oxidation of fosfomycin disodium salt by cerium(IV) in an aqueous perchloric acid medium at constant ionic strength, I = 1.10 mol dm−3, has been investigated spectrophotometrically at 25 °C. The reaction is of first order in cerium(IV) concentration, fractional order in both fosfomycin and H+ ion concentrations. The active species of oxidant is found to be Ce(OH)3+. Based on the experimental results a suitable mechanism is proposed. The reaction constants involved...

Citizens' perceptions of justice in international climate policy: an empirical analysis

Joachim Schleich, Andreas Ziegler, Elisabeth Dütschke & Claudia Schwirplies
Relying on a recent survey of more than 3400 participants from China, Germany, and the US, this article empirically analyses citizens' perceptions of key guiding principles for sharing mitigation costs across countries, justification of climate policy and trust in climate policy. Our findings suggest that the ranking of the main principles for burden-sharing is identical in China, Germany, and the US: accountability followed by capability, egalitarianism, and sovereignty. Thus, on a general level, citizens across...

A Convenient Procedure For The Synthesis Of 2,2,2-Trifluoroethyl Methyl 2-Oxoalkylphosphonates

Katalin Molnár, Julien Behra, László Takács, Mihály Kádár, Zsuzsanna Kardos & Ferenc Faigl
A convenient and versatile method was developed for the synthesis of 2,2,2-trifluoroethyl methyl 2-oxoalkylphosphonates starting from dimethyl phosphonates by alkaline hydrolysis followed by esterification with 2,2,2-trifluoroethanol using diisopropylcarbodiimide (DIC) in the presence of 4-(dimethylamino)pyridine (DMAP) catalyst following the Steglich protocol.

A Cluster-Based Outlier Detection Scheme for Multivariate Data

& Michael Pokojovy
Detection power of the squared Mahalanobis distance statistic is significantly reduced when several outliers exist within a multivariate data set of interest. To overcome this masking effect, we propose a computer-intensive cluster-based approach that incorporates a reweighted version of Rousseeuw’s minimum covariance determinant method with a multi-step cluster-based algorithm that initially filters out potential masking points. Compared to the most robust procedures, simulation studies show that our new method is better for outlier detection. Additional...

Scalable Bayesian Model Averaging Through Local Information Propagation

Li Ma
This article shows that a probabilistic version of the classical forward-stepwise variable inclusion procedure can serve as a general data-augmentation scheme for model space distributions in (generalized) linear models. This latent variable representation takes the form of a Markov process, thereby allowing information propagation algorithms to be applied for sampling from model space posteriors. In particular, We propose a sequential Monte Carlo method for achieving effective unbiased Bayesian model averaging in high-dimensional problems, using proposal...

An Analysis of an Incomplete Marked Point Pattern of Heat-Related 911 Calls

Matthew J. Heaton, Stephan R. Sain, Andrew J. Monaghan, Olga V. Wilhelmi & Mary H. Hayden
We analyze an incomplete marked point pattern of heat-related 911 calls between the years 2006–2010 in Houston, TX, to primarily investigate conditions that are associated with increased vulnerability to heat-related morbidity and, secondarily, build a statistical model that can be used as a public health tool to predict the volume of 911 calls given a time frame and heat exposure. We model the calls as arising from a nonhomogenous Cox process with unknown intensity measure....

Foundations for Envelope Models and Methods

& Xin Zhang
Envelopes were recently proposed by Cook, Li and Chiaromonte (2010) as a method for reducing estimative and predictive variations in multivariate linear regression. We extend their formulation, proposing a general definition of an envelope and a general framework for adapting envelope methods to any estimation procedure. We apply the new envelope methods to weighted least squares, generalized linear models and Cox regression. Simulations and illustrative data analysis show the potential for envelope methods to significantly...

Foundations for Envelope Models and Methods

& Xin Zhang
Envelopes were recently proposed by Cook, Li and Chiaromonte as a method for reducing estimative and predictive variations in multivariate linear regression. We extend their formulation, proposing a general definition of an envelope and a general framework for adapting envelope methods to any estimation procedure. We apply the new envelope methods to weighted least squares, generalized linear models and Cox regression. Simulations and illustrative data analysis show the potential for envelope methods to significantly improve...

Foundations for Envelope Models and Methods

& Xin Zhang
Envelopes were recently proposed by Cook, Li and Chiaromonte as a method for reducing estimative and predictive variations in multivariate linear regression. We extend their formulation, proposing a general definition of an envelope and a general framework for adapting envelope methods to any estimation procedure. We apply the new envelope methods to weighted least squares, generalized linear models and Cox regression. Simulations and illustrative data analysis show the potential for envelope methods to significantly improve...

Testing the Number of Components in Normal Mixture Regression Models

Hiroyuki Kasahara & Katsumi Shimotsu
Testing the number of components in finite normal mixture models is a long-standing challenge because of its nonregularity. This article studies likelihood-based testing of the number of components in normal mixture regression models with heteroscedastic components. We construct a likelihood-based test of the null hypothesis of m0 components against the alternative hypothesis of m0 + 1 components for any m0. The null asymptotic distribution of the proposed modified EM test statistic is the maximum of...

Robust Filtering

Laurent E. Calvet, Veronika Czellar & Elvezio Ronchetti
Filtering methods are powerful tools to estimate the hidden state of a state-space model from observations available in real time. However, they are known to be highly sensitive to the presence of small misspecifications of the underlying model and to outliers in the observation process. In this article, we show that the methodology of robust statistics can be adapted to sequential filtering. We define a filter as being robust if the relative error in the...

Graduate Scholar

Muhammad Aslam
Biogas reactor design for dry process and generation of electricity on sustainable basis

The Regai Dzive Shiri Project: a cluster randomised controlled trial to determine the effectiveness of a multi-component community-based HIV prevention intervention for rural youth in Zimbabwe – study design and baseline results

Frances Cowan, Sophie Pascoe, Lisa Langhaug, & Richard Hayes
Baseline results for the Regai Dzive Shiri trial published in Tropical Medicine and International Health in 2008 describing trial methods

Exploring CSR drivers and outcomes: A mixed-method, cross-sectional descriptive study exploring sustainable behaviour by SME in the Humberside (UK) region

Edward Van Hessen
This paper examines the strong relationship between various factors known to influence social and environmental practice in SME and sustainable outcomes. Sector: SME Location: United Kingdom Publication: 2014

Strongly photoluminescent Eu(III) tetrazolate ternary complexes with phosphine oxides as powerful sensitizers

Suraj Mal, Marek Pietraszkiewicz & Oksana Pietraszkiewicz
The Eu(III) cation forms electrically neutral photoluminescent complex with 5-(2-pyridyl-1-oxide)tetrazolate (PTO) anion. Although the photoluminescence properties of such tertiary Eu(III) and Tb(III) complexes were not as high (13 and 31% photoluminescence quantum yield, respectively) as reported for other diketonate lanthanide complexes probably because of high number of nitrogen atoms involved in PTO which leads to attachment of water molecules, reducing the luminescence quantum yield with vibrational and rotational quenching. Here, we report the removal of...

Mechanisms of zinc incorporation in aluminosilicate crystalline structures and the leaching behaviour of product phases

&
This study quantitatively evaluates a waste-to-resource strategy of blending zinc-laden sludge and clay material for low-cost ceramic products. Using ZnO as the simulated zinc-laden sludge to sinter with kaolinite, both zinc aluminate spinel (ZnAl2O4) and willemite (Zn2SiO4) phases were formed during the sintering process. To analyse the details of zinc incorporation reactions, γ-Al2O3 and quartz were further used as precursors to observe ZnAl2O4 and Zn2SiO4 formations. By firing the ZnO mixtures and their corresponding precursors...

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  • 2016
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