nils-herrmann/clean_scirepeval huggingface dataset:
Synthesis and research of epoxy resin toughening agent
Venue: SpringerPlus
Year: 2016

In this paper, a synthesis method of epoxy resin toughening agent was presented, then the chemical composition and molecular number were studied, which include the DSC curves analysis, the fracture surface morphology and bonding strength. In addition, the mechanism of epoxy resin toughening agent and the effect of toughening agent's content to bonding strength were studied. The testing results reveal that this toughening agent can form a micro two phase structure in epoxy amine system, which results in the stable chemical properties and excellent physical properties.
The University Library Information System Adaptability in an Intelligent Based University Environment
Year: 2016

Agent based (intelligent) systems technology has generated lots of excitement in recent years because of its promise as a new paradigm for conceptualizing, designing and implementing software systems. Multi agent systems are designed as a collection of interacting autonomous agents, each having their own capacities and goals that are situated to a common environment. An information system is very important part of the contemporary university. Adaptation as a new trend in the modern e Learning concepts aimed to produce more effective learning curve by tailoring a course's curriculum to individuals' specific preferences. In this paper, presented is an AeLS (Adaptive e Learning System) successfully implemented as an advancement from the previous agent based eLS IABUIS (Integrated Intelligent Agent Based University Information System) The main point of interest would be an ULIS (University Library Information System) adaptability as a part of AeLS.  Intelligent University Information System; Library Information System; Adaptive e Learning System
Frequency tracking for efficient phasor measurement based on a CSTFM model
Venue: 2015 IEEE International Workshop on Applied Measurements for Power Systems (AMPS)
Year: 2015

The paper presents a technique based on the use of single variable Kalman filters (KFs) to track the frequency variation of signal components in multifrequency phasor analysis. KF based tracking is employed for accurate frequency estimation of both harmonic and inter harmonic components in a Compressive Sensing Taylor Fourier Multifrequency (CSTFM) algorithm. This novel approach improves robustness of the CSTFM method to the effects of spectral interference among harmonic and interharmonic components, allowing better estimates of each component and extending the range of application beyond pure phasor measurement unit (PMU) devices. Computational efficiency compared to a plain CSTFM algorithm is also enhanced. Significant case studies, with signals including timevarying harmonic and interharmonic components, are analyzed and discussed with regards, in particular, to frequency estimation. Moreover, it is shown that intermittent components can be handled without loss of accuracy by KF based tracking features.
"It's Normal..Mom Will Be Home in an Hour" The Role of Fathers in Menstrual Education
Year: 2015

The purpose of this exploratory study was to examine fathers' self reports about their role in educating daughters and sons about menstruation. Through postings in online venues, 110 fathers were recruited. Fathers indicated that they were an important source of information for their children, particularly sons. Traditional beliefs about mothering, but not fathering, negatively predicted knowledge and comfort in talking about menstruation. Fathers reported that they would talk about it earlier to their daughters than to their sons, but conversation topics were generally similar for both sexes. Negative aspects of menstruation (e.g. mood swings) were more likely to be raised with sons, however.
The development of a public optometry system in Mozambique: a Cost Benefit Analysis
Venue: BMC Health Services Research
Year: 2014

BackgroundThe economic burden of uncorrected refractive error (URE) is thought to be high in Mozambique, largely as a consequence of the lack of resources and systems to tackle this largely avoidable problem. The Mozambique Eyecare Project (MEP) has established the first optometry training and human resource deployment initiative to address the burden of URE in Lusophone Africa. The nature of the MEP programme provides the opportunity to determine, using Cost Benefit Analysis (CBA) whether investing in the establishment and delivery of a comprehensive system for optometry human resource development and public sector deployment is economically justifiable for Lusophone Africa. CBA methodology was applied across the period 2009 2049. Costs associated with establishing and operating a school of optometry, and a programme to address uncorrected refractive error, were included. Benefits were calculated using a human capital approach to valuing sight. Disability weightings from the Global Burden of Disease study were applied. Costs were subtracted from benefits to provide the net societal benefit, which was discounted to provide the net present value using a 3% discount rate.ResultsUsing the most recently published disability weightings, the potential exists, through the correction of URE in 24.3 million potentially economically productive persons, to achieve a net present value societal benefit of up to $1.1 billion by 2049, at a Benefit Cost ratio of 14:1. When CBA assumptions are varied as part of the sensitivity analysis, the results suggest the societal benefit could lie in the range of $649 million to $9.6 billion by 2049.ConclusionThis study demonstrates that a programme designed to address the burden of refractive error in Mozambique is economically justifiable in terms of the increased productivity that would result due to its implementation.
A blind iterative calibration method for high resolution DOA estimation
Venue: 2011 MILCOM 2011 Military Communications Conference
Year: 2011

A novel online antenna array calibration method is presented in this paper. Unlike conventional calibration process, the proposed method is a blind approach that does not require prior knowledge of angles used for calibration and the method can be modified for real time calibration processing. An iterative process is used to converge to the actual bearings while the measured steering vector is estimated via Eigenvalue decomposition. The correction matrix is then estimated by use of the least squares estimator. The last step consists of pre multiplying the measured data set by the obtained correction matrix which mitigates magnitude, phase, and mutual coupling effects on the acquired data set. The experimental study has been carried out on an 8 element uniform circular array (UCA) with an 8 channel RF receiver board at 5.8GHz. The performance of Bartlett, MUSIC, Beamspace MUSIC, and S2 MUSIC direction of arrival (DOA) estimation algorithms have been examined on CW and Harris SeaLancet RT1944/U radio signals. The lab test results have shown significant improvements on high resolution DOA estimation in terms of accuracy and resolution. The proposed method can be implemented in a direction finding system and can be run periodically to mitigate any changes in the environment and maintain high resolution performance over time. Potential applications of the calibration method include improvement of accurate passive RF signal source localization, high QoS wireless communications with beamforming antennas and sensor networking.
Fully Statistical Neural Belief Tracking
Venue: ACL
Year: 2018

This paper proposes an improvement to the existing data driven Neural Belief Tracking (NBT) framework for Dialogue State Tracking (DST) The existing NBT model uses a hand crafted belief state update mechanism which involves an expensive manual retuning step whenever the model is deployed to a new dialogue domain. We show that this update mechanism can be learned jointly with the semantic decoding and context modelling parts of the NBT model, eliminating the last rule based module from this DST framework. We propose two different statistical update mechanisms and show that dialogue dynamics can be modelled with a very small number of additional model parameters. In our DST evaluation over three languages, we show that this model achieves competitive performance and provides a robust framework for building resource light DST models.
Adenosine deaminase deficiency: a review
Venue: Orphanet Journal of Rare Diseases
Year: 2018

Adenosine deaminase (ADA) deficiency leads to an accumulation of toxic purine degradation by products, most potently affecting lymphocytes, leading to adenosine deaminase deficient severe combined immunodeficiency. Whilst most notable affects are on lymphocytes, other manifestations include skeletal abnormalities, neurodevelopmental affects and pulmonary manifestations associated with pulmonary alveolar proteinosis. Affected patients present in early infancy, usually with persistent infection, or with pulmonary insufficiency. Three treatment options are currently available. Initial treatment with enzyme replacement therapy may alleviate acute symptoms and enable partial immunological reconstitution, but treatment is life long, immune reconstitution is incomplete, and the reconstituted immune system may nullify the effects of the enzyme replacement. Hematopoietic stem cell transplant has long been established as the treatment of choice, particularly where a matched sibling or well matched unrelated donor is available. More recently, the use of gene addition techniques to correct the genetic defect in autologous haematopoietic stem cells treatment has demonstrated immunological and clinical efficacy. This article reviews the biology, clinical presentation, diagnosis and treatment of ADA deficiency.
Universitatsbibliothek der Medizinischen Universitat Wien goes e only: Umstellung des Zeitschriftenbezugs von p+e auf e only ab 1. Januar 2013
Year: 2013

Since January 2013 the university library of the Medical University Vienna provides its users with current research literature only in the form of electronic journals, printed journals were canceled. After the first year of the new era the library draws a positive conclusion. The article describes this radical change in the provision of literature at the university. Preliminary considerations and analyzes are given for library user behavior and for spatial, financial and human resources. Furthermore, the goals of the transition to e only are described. The phase of transition and related organizational tasks are described and future steps for optimization are listed.
Sec3 Exocyst Component Knockdown Inhibits Axonal Formation and Cortical Neuronal Migration During Brain Cortex Development
Year: 2021

During neuronal development cell polarization is of vital importance. The establishment of polarity necessitates initial axonal outgrowth in concomitance with the addition of new membrane to the axon's plasmalemma. Axolemmal expansion occurs by exocytosis of plasmalemmal precursor vesicles primarily at the neuronal growth cone membrane. The multiprotein exocyst complex drives spatial location and specificity of vesicle fusion at plasma membrane. However, the specific participation of its different proteins on neuronal differentiation has not been fully established. In the present work we analyzed the role of Sec3, a prominent exocyst complex protein on neuronal differentiation. Using mice hipocampal primary cultures we determined that Sec3 is expressed in neurons at early stages prior to neuronal polarization. Furthermore, we determined that silencing of Sec3 in mice hippocampal neurons in culture precluded polarization. Moreover, using in utero electroporation experiments, we determined that Sec3 knockdown affected cortical neurons migration and morphology during neocortex formation. Our results demonstrate that the exocyst complex protein Sec3 plays an important role in axon formation in neuronal differentiation and the migration of neuronal progenitors during cortex development.
A survey of deep learning based visual question answering
Year: 2021

With the warming up and continuous development of machine learning, especially deep learning, the research on visual question answering field has made significant progress, with important theoretical research significance and practical application value. Therefore, it is necessary to summarize the current research and provide some reference for researchers in this field. This article conducted a detailed and in depth analysis and summarized of relevant research and typical methods of visual question answering field. First, relevant background knowledge about VQA(Visual Question Answering) was introduced. Secondly, the issues and challenges of visual question answering were discussed, and at the same time, some promising discussion on the particular methodologies was given. Thirdly, the key sub problems affecting visual question answering were summarized and analyzed. Then, the current commonly used data sets and evaluation indicators were summarized. Next, in view of the popular algorithms and models in VQA research, comparison of the algorithms and models was summarized and listed. Finally, the future development trend and conclusion of visual question answering were prospected.
Dis orienting mobile construction workforces: impacts and externalities within the political economy of resource based regions
Year: 2020

The political economy of labour landscapes in resource dependent regions continues to transform with important implications for workers, families, communities, service providers, businesses, and industries. Over time, mobile work has created a new form of worker employer dependence where some elements of traditional local labour relationships exist, but other elements have shifted. In this paper, we focus on evolving mobile workforce practices and their associated implications for workers in the construction sector. In particular, we look at how the changing demand for mobile labour in Canada has shifted the negotiating power of both industry and workers. Within this context, we find that underdeveloped industry policies and weak senior government regulatory regimes have not kept pace with the realities of these changing mobile work landscapes. Drawing upon our case study of BC Hydro's Site C dam project in British Columbia, Canada, we situate new institutionalism within the political economy of mobile work to expand understanding of how stakeholder behaviours are affecting labour practices. Among our key findings are that industry stakeholders have failed to renew workplace policies and processes to reflect mobile labour practices. The result has been a dis orienting environment for mobile workforces where many of the impacts or externalities associated with mobile work have been transferred to workers, their families, and their communities.
Charles Peirce and the Hispanic World
Year: 2009

A surprising fact in the historiography of 20 century Hispanic philosophy is its almost total opacity towards the American tradition. This deep rift between the two traditions is even more striking when one realizes the almost total neglect in the Hispanic world of such an outstanding Hispanic American thinker as George Santayana, or the real affinity between the central questions of American pragmatism and the topics and problems addressed by the most relevant Hispanic thinkers of the last century: Miguel de Unamuno, Jose Ortega y Gasset, Eugenio d'Ors, Carlos Vaz Ferreira, Jose Ferrater Mora, etc.
Construction and Optimization of Port Logistics Service Supply Chain Based on Cloud Computing
Venue: Journal of Coastal Research
Year: 2019

Yang,  Construction and optimization of port logistics service supply chain based on cloud computing.  Li, L. Wan, X. and Huang, X. (eds. Recent Developments in Practices and Research on Coastal Regions: Transportation, Environment and Economy.  Coconut Creek (Florida) ISSN 0749 0208. This article describes a joint contract for new products or applications in the cloud computing market to coordinate the third order cloud computing service supply chain. In this section, the article assumes that the information is completely symmetrical, and the requirements are subject to uniform distribution. The research results show that the revenue sharing contract can improve the profit of the cloud computing service supply chain and its members but can not achieve the coordination of the supply chain. The joint contract can coordinate the supply chain of the cloud computing service and arbitrarily distribute the profits among the members of the supply chain. In addition, the sensitivity analysis shows that, when the market potential demand is large, the price sensitivity is low, and when the range of demand changes is small, the supply chain contract is obviously better than the decentralized decision.
Modification of Theoretical models to predict mechanical behavior of PVC/NBR/organoclay nanocomposites
Year: 2013

Organo modified nanoclay (Cloisite 30B) was added via direct melt mixing to the acrylonitrile butadiene rubber/poly(vinyl chloride) (PVC/NBR) to fabricate polymer blend/clay nanocomposites. The states of nano fillers dispersion were investigated by transmission electron microscopy (TEM) and X ray diffraction (XRD) From the morphological study of nanocomposites, it is concluded that exfoliated morphology is obtainable by introduction of 2.5 vol of nanoclay. The effect of nano filler volume content on the mechanical properties of PVC/NBR matrix reinforced by Cloisite 30B was investigated by tensile test. Experimental results show that the Young's modulus and tensile strength of composites can significantly improved with a small amount of nanofiller. Moreover, to investigate the stress strain behavior of NBR/PVC nanocomposites, seven constitutive models such as Arruda Boyce, Mooney Rivilen, Marlow, second order of polynomial, Van der Waals, and third order Odgen were studied and compared with experimental data. Results showed that Malow and second order polynomial model can be used for nanoclay filled compound whereas the other models show more deviation from experimental data. Three micromechanical models named liner rule of mixtures (LROM) and the inverse rule of mixtures (IROM) Halpin Tsai theory was applied to evaluate the dependence of Young modulus of nanocomposites on volume fraction of nanofiller. Two modifying factors were proposed to evaluate the Young's modulus of nanocomposites which could greatly improve the theoretical prediction obtained from inverse rule of mixtures (IROM) and Halpin Tsai equation. The modifying factors were introduced by adopting an exponential, power law and linear factors in the equation. In order to verify the suitability of the modified models, the ensuing theoretical predictions are compared to the other experimental data available in the literature. Good predictability of the modified models is demonstrated in the results.
Progress and challenges on gas production from natural gas hydrate bearing sediment
Year: 2020

Natural gas hydrate (NGH) is widely distributed in permafrost and submarine areas. It has been considered as a potential energy resource in the future since its reserves are estimated two times more than those of the conventional fossil energy. Production from NGH reservoirs with economical methods is critical to realize energy application of NGH. Series of NGH exploitation methods such as depressurization, thermal stimulation, chemical inhibitor injection, and replacement method have been proposed and widely studied by experiments and numerical methods, and several field trials have also been conducted. Producing gas from NGH reservoir is a complex process with coupling of thermal/hydraulic/chemical/mechanical (THCM) which leads to NGH exploitation more different than that of traditional fossil resources. And none of these methods can be applied for long term commercial NGH exploitation. This paper has reviewed all the developed exploitation methods with comments of advantages and limitations. The challenges of gas production from hydrate bearing sediments are also summarized. Besides, some possible solutions for these challenges including reservoir restoration with formation of CO2 hydrate, improving replacement rate of CO2 with supercritical CO2 jetting technique. Furthermore, electrical heating of hydrate bearing sediments with persistent currents or high voltage pulse discharge is put forward.
Mariners' physical activity classification at sea using a wrist worn wearable sensor.
Year: 2017

A long term sea voyage imposes a special living environment on mariners that directly influences their physical health. To our best knowledge, there have been few research efforts that evaluate mariners' physical health during sea life. This study aims to develop wearable based mariner physical activity classification models. Twenty eight participants (n=7 females, n=21 males, mean age=21.4, and mean BMI=22.9) wore a single accelerometer on their dominant hand. The wrist acceleration data were collected and analyzed to extract wrist motion features compared to the criterion measures (i.e. direct observation) including four major physical activity types in a maritime setting. Three machine learning algorithms were applied to develop an accurate classification model. The results of the criterion based classification show that more than 95% of mariners' daily physical activities were accurately classified. Based on the experimental results, we conclude that the wrist motion features efficiently differentiate major physical activity patterns in a maritime environment. The proposed physical activity classification models can be used as an objective measurement of mariners' physical activity levels during their long voyage.
Voluntary disclosure and corporate governance: empirical evidence from Kuwait
Year: 2017

The purpose of this paper is to assess and analyse the level of voluntary disclosure practices in the annual reports of Kuwait Stock Exchange (KSE) listed firms and explore the association between corporate governance mechanisms and voluntary disclosure practices.  Panel data analysis was undertaken over a period from 2005 2008 with an aim to examine the influence of corporate governance mechanisms on voluntary disclosures made by 52 listed firms in their four years of annual reports. An unweighted voluntary disclosure index has been used for hand collecting data from annual reports.  The findings show that the mean voluntary disclosure level over the four years is 23 per cent. Four out of eight corporate governance mechanisms examined found to be significantly associated with the level of voluntary disclosure, three negatively, one positively. Cross directorship, board size and role duality are negatively related to voluntary disclosure, while government ownership is positively related to voluntary disclosure. In contrast, the proportion of non executive directors, family members on the board, the presence of an audit committee and the presence of the ruling family on the board have an insignificant influencer on voluntary disclosure practices.  The study provides an assessment of KSE listed firm voluntary disclosure practices and its determents and highlights that that corporate governance attributes affect the voluntary disclosure practices of KSE listed firms.  The findings of this study contribute to the arguments concerning the role of corporate governance mechanisms in improving the level of disclosure and information transparency.