nils-herrmann/clean_scirepeval huggingface dataset:
Understanding and Manipulating the Interplay of Wide Energy Gap Host and TADF Sensitizer in High Performance Fluorescence OLEDs.
Venue: Advanced materials
Year: 2019

Comprising an emitting layer (EML) constituting a wide energy gap host, a thermally activated delayed fluorescence (TADF) sensitizer and a conventional fluorescent dopant, TADF sensitizing fluorescence organic light emitting diodes (TSF OLEDs) highly depend on component interplay to maximize their performance, which, however, is still under researched. Taking the host type (TADF or non TADF) and the recombination position (on the host or on the TADF sensitizer) into consideration, the interplay of host and TADF sensitizer is comprehensively studied and manipulated. A wide energy gap host with TADF and recombination of charges on it are both required to maximize device performances by triggering multiple sensitizing processes to eliminate exciton losses. Based on those findings, a maximum external quantum efficiency (EQE)/power efficiency (PE) of 23.2%/76.9 lm W 1 is realized with a newly developed TADF host, significantly outperforming the reference devices. Further device optimization leads to unprecedently high EQE/PE of 24.2%/89.5 lm W 1 and a half lifetime of over 400 h at an initial luminance of 2000 cd m 2 with the peak PE being the highest value among the reported TSF OLEDs. This work reveals the importance of manipulating the component interplay in EMLs, opening a new avenue toward highly efficient TSF OLEDs.
Secure communication and image encryption scheme based on synchronisation of fractional order chaotic systems using backstepping
Year: 2018

Synchronisation strategy of fractional order nonlinear dynamical systems is utilised to address the problem of secure communication by introducing additional security features. Initially, a backstepping based controller is designed for synchronisation of two similar fractional order chaotic systems in master slave configuration. The controller obtained is divided into two parts with one part transmitted through the communication channel whereas the other part has to be designed at the receiver end so as to obtain synchronisation between master and slave system. Further, only two signals are transmitted out of which one has an embedded message signal and the other is a complex combination of master states which will be used for synchronisation purpose at the receiver end for recovery of message signal. The initial conditions, system parameters, fractional orders, the structure of controller and the combination of master system states form a large key set which should be known is advance in order to breach the security. Here, the scheme for secure transmission of speech signal is presented first and further a scheme for image encryption is given. The simulation results and security analysis using different quantitative measures are presented at the end to demonstrate the applicability and effectiveness of the proposed scheme.
The Contribution of Vocabulary Learning Strategies to University Students' Vocabulary Size
Year: 2014

The present study aimed to investigate the relationship between students' vocabulary learning strategies and their vocabulary size. The frequency of vocabulary learning strategies used by the high and low vocabulary students was also explored. The subjects of this study were 257 Prince of Songkla University students in the 6 fields of study who wouldbe highly affected by the opening of ASEAN Economic Community (AEC)in 2015: medical, dental, nursing, engineering, accounting, and hospitality and tourism fields. The research instruments were the vocabulary learning strategy questionnaire, the bilingual English Thai version of vocabulary size test, and a semi structured interview. The results revealed that the subjects' use of vocabulary learning strategies was moderately correlated with their vocabulary size. The subjects in the high vocabulary group employed certain strategies significantly more often than those in the low vocabulary group (p<.01) Determination strategies were the most frequentlyused strategies and social strategies were the least used strategies.
Reproducible segmentation of white matter tractograms using artificial intelligence and spatial fuzzy sets
Year: 2019

Tractography is the only in vivo technique that allows the extraction of white matter fibers from the brain in a non invasive way. It is used as a support in neurosurgeries and as research tool to study structural connectivity in both healthy and pathological subjects. It generates, from diffusion Magnetic Resonance (MR) volumes, millions of 3D polylines that are estimates of the path followed by real axons. One important clinical application is the automatic segmentation of precise and anatomically well defined white matter tracts from whole brain tractograms, but this task is particularly difficult to accomplish since the large number of streamlines makes the computational costs very high and the anatomical tracts definitions found in literature are usually vague or imprecise. The purpose of this master thesis is to model, in a reproducible way, the tracts anatomical definitions using fuzzy logic and to extract them from whole brain tractograms of multiple subjects with the help of clustering techniques. The whole process have been implemented on a desktop computer with normal characteristics paying particular attention on memory and time issues, so that it can be ideally used by an external operator without the need of a high performance machine and in a reasonable time. This thesis, firstly intoduces the physics of the diffusion MR and the importance of tractography as a novel support in nowadays research and clinical applications. It then explains the state of the art segmentation techniques that can be used to extract individual fiber bundles. It briefly describes the tool used to model the anatomical definitions and proceeds with the explanation of the algorithm created for tracts segmentation, whose aim is to lead the fuzzy set approach from a proof of concept state to a validated technique. Finally, the results are presented together with the ones obtained using the state of the art techniques to assess the validity of the outputs and to show the improvements achieved.
Enhanced Pix2pix Dehazing Network
Venue: 2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
Year: 2019

In this paper, we reduce the image dehazing problem to an image to image translation problem, and propose Enhanced Pix2pix Dehazing Network (EPDN) which generates a haze free image without relying on the physical scattering model. EPDN is embedded by a generative adversarial network, which is followed by a well designed enhancer. Inspired by visual perception global first theory, the discriminator guides the generator to create a pseudo realistic image on a coarse scale, while the enhancer following the generator is required to produce a realistic dehazing image on the fine scale. The enhancer contains two enhancing blocks based on the receptive field model, which reinforces the dehazing effect in both color and details. The embedded GAN is jointly trained with the enhancer. Extensive experiment results on synthetic datasets and real world datasets show that the proposed EPDN is superior to the state of the art methods in terms of PSNR, SSIM, PI, and subjective visual effect.
Experimental Study on Partial Replacement of Cement by Marble Powder Quarry Dust
Year: 2017

the present study is aimed to utilize Waste marble powder and quarry sand as partial replacement of cement and comparing it with conventional concrete. This experimental investigation is carried out by M30 grade of concrete is produced by replacing cement with 0% 10% 20% 30% of Marble Powder Quarry dust. It is found that the studies of concrete made of waste marble powder and quarry dust increases the workability reduction at 10% and 30% respectively. Therefore the quarry dust and waste marble powder should be used in construction works and then the natural resources would be used efficiently.
Towards a quantitative model of understanding the dynamics of collaboration in collaborative writing
Venue: Journal of Second Language Writing
Year: 2019

Understanding the nature of collaboration is critical in collaborative writing (CW) as it impacts the amount of scaffolding that occurs and the amount of linguistic knowledge that can be retained (Storch, 2013) The most prevalent model to examine peer collaboration in CW is based on a global qualitative analysis of learners' involvement in and control over a writing task (Storch, 2001a) However, this model does not account for the fluctuating nature of peer collaboration in CW. This paper aims to add to Storch's model by proposing a model of dyadic interaction that considers learners' contribution to different aspects of CW and identifies collaboration types in a bottom up fashion. Drawing upon a quantitative analysis of learners' comparative involvement in major aspects of a CW task, a cluster analysis was performed to allow different collaboration types to emerge from a dataset of 35 pair talks. As a result, five collaboration types were detected, including organization noncollaborative type, language use noncollaborative type, task management noncollaborative type, content noncollaborative type, and collaborative type. Each collaboration type represents a distinct interactional pattern in relation to pair members' engagement in crucial aspects of CW. Additionally, the paper examines the link between the nature of collaboration and learners' co constructed texts in CW. The results indicate that collaboration type does not influence text quality and linguistic accuracy of learners' collaborative texts. Methodological and pedagogical implications are discussed.
A 1 bit Reflective Metasurface for Generating OAM Waves Based on Linear Polarizer
Venue: 2019 International Symposium on Antennas and Propagation (ISAP)
Year: 2019

This paper presents a novel 1 bit reflective metasurface to generate orbital angular momentum (OAM) waves in radio frequency domain. The metasurface unit cell is based on a wideband linear polarizer, which consists of a single layer substrate with top polarization rotating patch (PRP) and bottom metallic ground. The proposed unit cell and its mirror image can maintain a stable 180deg phase difference over a wide bandwidth of 18 36 GHz. Thus, 1 bit phase quantization is obtained by using this property. Based on the linear polarizer, a 1 bit reflectarray for generating +1 mode OAM waves is designed and simulated. The simulated results show that +1 mode OAM vortex electromagnetic waves are successfully generated and a small divergence angle of 4deg is obtained, with a high gain of 19.2 dBi at 27 GHz.
From Self Construal to Threat Appraisal: Understanding Cultural Differences in Social Anxiety Between Asian Americans and European Americans
Venue: Cultural diversity ethnic minority psychology
Year: 2018

Abundant research has shown that Asian Americans tend to score higher on standardized social anxiety measures than do European Americans. The current study explored how this cultural difference in social anxiety may be explained by cultural differences in self construals and threat appraisal between Asian Americans and European Americans.  Participants were 310 Asian Americans and 249 European Americans recruited from a large university in Hawaii who completed questionnaires online in exchange for course credit. Using structural equation modeling, we compared a series of competing models in which cultural differences in social anxiety were specified to be mediated by cultural differences in self construals and threat appraisal.  Compared with European Americans, Asian Americans scored higher on measures of social anxiety, threat appraisal, and interdependent self construal, and lower on independent self construal. We found support for the mediating roles of both self construals and threat appraisal. Specifically, higher interdependent and lower independent self construal reported by Asian Americans were related to higher threat appraisal, which were, in turn, associated with higher social anxiety. Higher interdependent and lower independent self construal were also directly related to higher social anxiety over and above the influence of threat appraisal.  These findings provide initial evidence on how cultural group differences in beliefs about the self in relation to others may shape what is attended to in a social situation, and contribute to cultural differences in subsequent affective response between Asian Americans and European Americans.
Buoyancy effect on MHD flow of nanofluid over a stretching sheet in the presence of thermal radiation
Year: 2014

In this paper, heat transfer of a steady, incompressible water based nanofluid flow over a stretching sheet in the presence of transverse magnetic field with thermal radiation and buoyancy effects are investigated. A similarity transformation is used to reduce the governing momentum and energy equations into non linear ordinary differential equations. The resulting differential equations with the appropriate boundary conditions are solved by shooting iteration technique together with fourth order Runge Kutta integration scheme. Analytical solutions are presented in terms of hypergeometric function for the special case of horizontal stretching sheet. The effects of the physical parameters on the flow and heat transfer characteristics are presented through graphs and analysed for Cu metal and Cu oxide nanoparticles. The values of skin friction coefficient and the reduced Nusselt number are calculated and presented through tables. Furthermore, the limiting cases are obtained and are found to be in good agreement with the previously published results.
Enhancing public speaking confidence, skills, and performance: An experiment of service learning
Venue: The International Journal of Management Education
Year: 2019

Much of service learning research has been characterized as anecdotal and testimonial with widespread calls for more empirical data to support the claimed benefits of this pedagogical tool. The present longitudinal experiment answered these calls by testing the effect of service learning projects on several oral communication skills during a 4 month period, as well as some boundary conditions affecting this impact. The intervention consisted of involvement in 1 of 20 different team developed service learning projects compared to traditional research projects. This was hypothesized to boost management students' public speaking self efficacy, lower anxiety, and improve public speaking mechanics competence along with actual public speaking performance (evaluated by independent raters) Results indicated that a wide array of service learning projects can positively impact students in each of these important areas of public speaking. It was also found that service learning more strongly benefited those initially lower in public speaking self efficacy. Thus, this experiment suggests that instructors can include a service learning component in their courses that can aid students' oral communication skill development.
The incidence of co morbidities related to obesity and overweight: A systematic review and meta analysis
Venue: BMC public health
Year: 2009

BackgroundOverweight and obese persons are at risk of a number of medical conditions which can lead to further morbidity and mortality. The primary objective of this study is to provide an estimate of the incidence of each co morbidity related to obesity and overweight using a meta analysis.MethodsA literature search for the twenty co morbidities identified in a preliminary search was conducted in Medline and Embase  asthma, gallbladder disease, osteoarthritis and chronic back pain. We noted the strongest association between overweight defined by body mass index (BMI) and the incidence of type II diabetes in females (RR 3.92 (95% CI: 3.10 4.97) Statistically significant associations with obesity were found with the incidence of type II diabetes, all cancers except esophageal and prostate cancer, all cardiovascular diseases, asthma, gallbladder disease, osteoarthritis and chronic back pain. Obesity defined by BMI was also most strongly associated with the incidence of type II diabetes in females (12.41 (9.03 17.06).ConclusionBoth overweight and obesity are associated with the incidence of multiple co morbidities including type II diabetes, cancer and cardiovascular diseases. Maintenance of a healthy weight could be important in the prevention of the large disease burden in the future. Further studies are needed to explore the biological mechanisms that link overweight and obesity with these co morbidities.
Trends in oral cavity cancer incidence, mortality, survival and treatment in the Netherlands
Venue: International journal of cancer
Year: 2016

Information on epidemiology is essential to evaluate care for the growing group of oral cancer patients. We investigated trends in incidence, mortality and relative survival rates for oral cavity cancer (OCC) and its subsites in the Netherlands from 1991 to 2010, and relate these to changes in stage and treatment. Patient (age, sex) tumour (subsite, stage) and treatment characteristics of patients diagnosed with OCC (ICD O 3: C02 C06) in 1991 2010 were extracted from the Netherlands Cancer Registry. Incidence, mortality and 5 year relative survival rates over time are presented, as well as trends in type of treatment. The incidence of OCC increased with +1.2% (95%CI: +0.9%+1.6% per year: more strongly in women, stage I and IV disease, and in cancers of the tongue and gum. The mortality rate slightly rose +0.8% 95%CI: +0.3%+1.3% per year) but differed by subsite. The 5 year relative survival improved from 57% in 1991 1995 to 62% in 2006 2010. The 5 year relative survival was better for women compared with men (64% and 55% respectively) decreased with increasing stage, was the best for tongue cancer (63% and the worst for cancer of the gum (56% and floor of mouth cancer (55% The relative excess risk of dying was higher for non surgery based treatments. Surgery was the main treatment option and the proportion of "surgery only" rose in stage I and III disease. The incidence and, to a lesser extent, mortality of OCC are increasing and therefore, even with slightly improving survival rates, OCC is an increasingly important health problem.
Developpement des outils et suivi des methodes de certifications Haute Qualite Environnementale (HQE) d'un batiment tertiaire.
Year: 2012

RESUME Ce projet de fin d'etude traite du developpement d'outils et du suivi des methodes de certifications Haute Qualite Environnementale (HQE) de batiments tertiaires. L'operation Etoile du Rhin consiste en la realisation de 3 batiments de bureaux d'une surface totale de 6800m2 dans le cadre de la certification HQE. Cette demarche s'inscrit donc dans le cadre du developpement durable, un choix eco responsable temoignant du changement des mentalites en France. La relative nouveaute de cette demarche impose de guider les entreprises en leur proposant des outils et des methodes adaptes afin qu'elles puissent poursuivre les operations dans le respect de la certification. Ce memoire fait part des moyens mis en oeuvre durant ce stage pour recenser les caracteristiques des materiaux qu'il est primordial de respecter. Il faut donc proceder a une etude approfondie de la documentation et des notes techniques et a des modelisations des structures. Il est aussi necessaire d'assurer un suivi regulier de l'operation sur site pour faire respecter les exigences de la certification et pour conseiller les equipes travaux sur les choix a prendre. Enfin il faut entrer en contact avec les differents acteurs du chantier. Mener une campagne de sensibilisation et trouver des solutions d'optimisation du travail au pres des sous traitants mais aussi des compagnons est essentiel pour mener a bien un tel projet. Guider le client dans ces choix en imposant des limites et des contraintes afin de faire respecter la certification n'est pas chose aisee Ce rapport traite des echanges etablis avec la Maitrise d'Ouvrage durant le stage.  The present work deal with the development of tools and with the follow up of methods of certification in High Environmental Quality (HEQ).The project named "Etoile du Rhin" consists in 3 offices buildings with a total area of 6800m2. This operation has the HEQ certification as a target. This approach enters within the framework of the sustainable development, a responsible choice which just begins to be anchored in mentalities in France. This new state of mind forces us to help companies by proposing them tools and adapted methods in order to meet the HEQ certification. This report deals with the implemented measures during my professional training to list characteristics of materials which are essential to respect. That is why I had to study in details the whole documentation and technical notes and to proceed to a modeling of the building.It is also necessary to follow up the operation on site to check if all HEQ requirements are reached and to advise workmen and the engineer team on the right choices to make. Guiding the client in his choices is not an easy thing; that is why it is really important to communicate with all the protagonists of the operation: the contracting owner, the architect, subcontractors and the construction company. It is this whole process that is described in this paper.
Guselkumab for the treatment of moderate to severe plaque psoriasis
Venue: Expert review of clinical pharmacology
Year: 2018

Guselkumab is a human monoclonal antibody targeting the p19 subunit of IL 23 that has been approved for the treatment of adult patients with moderate to severe plaque psoriasis who are candidates for systemic therapy or phototherapy. This medication blocks the IL 23/IL 17 axis, which has been implicated in playing a key role in the pathogenesis of psoriasis.  This review outlines the pharmacologic properties, safety, and efficacy of guselkumab for the treatment of plaque psoriasis.  Guselkumab is the first IL 23 specific inhibitor to be approved for the treatment of plaque psoriasis. Phase II and III clinical trial results have demonstrated excellent safety and efficacy of guselkumab. IL 23 inhibitors may offer potential benefits over existing therapies for moderate to severe plaque psoriasis in terms of safety, frequency of administration, and efficacy. Long term safety data will be critical in evaluating the role of guselkumab in the treatment of psoriasis.
Examining the relationship between audit committee effectiveness and audit fees: An empirical investigation on companies listed in the UAE financial markets
Year: 2019

This study seeks to understand the relationship between audit committee effectiveness and audit fees. Prior literature suggests two perspectives to explain this relationship; the first is demand based whereas a positive relationship is expected, while the second is audit risk which propose a negative relationship between the two variables. In order to test the relationship between the two variables, data were collected from 64 companies listed in Abu Dhabi Securities Exchange and Dubai Financial Market. Univariate and multivariate analyses were conducted to test the hypotheses of the study. Results showed that audit committee effectiveness has a significant positive impact on audit fees. This result supports the demand based perspective to explain the relationship between audit committee effectiveness and audit fees. Also, a significant positive relationship is reported for number of meeting of audit committees and audit committee members financial expertise with audit fees.