nils-herrmann/clean_scirepeval huggingface dataset:
Semantic Perceptual Image Compression with a Laplacian Pyramid of Convolutional Networks
Venue: 2019 IEEE International Conference on Image Processing (ICIP)
Year: 2019

Recently, deep neural network (DNN) based image compression methods have achieved impressive results. These methods generally use thumbnail images or crop small patches from high resolution images to train their networks. Instead of using patch based training mode, we propose a novel DNN based image compression framework in this paper. We apply the Laplacian pyramid to construct a multi scale image representation. By learning the increasingly detailed representations, the proposed method is able to progressively restore an image. Furthermore, we use the adversarial networks for training to encourage the perceptual quality of the reconstructed image. Particularly at low bitrates, our model can only store the global semantics of an image and automatically synthesize the texture to achieve high subjective quality. Experimental results on demonstrate that our method achieves state of the art performance, with advantages over existing methods in terms of visual quality.
A Review on Optimization of the Process Parameters in Friction Stir Welding of Aluminium Alloys (AA6082 and AA6105) by Taguchi Technique
Year: 2018

This study is describing a simple and systematic methodology for optimizing the Process parameters of friction stir welding (FSW) of (AA6105 and AA6082) aluminium alloy using Taguchi technique. The main focus of this review paper is to discuss FSW principle, process parameter and mechanical properties. The current study focuses on the friction stir welding of wrought aluminium alloys 6082 and aluminium alloy 6105 that are commonly used in the structural and automotive industries. Apart from this paper FSW process has been done on various aluminium alloys but dissimilar friction stir welding of these two materials are not reported in their research. A systematic study has been performed on the joint properties on the dissimilar welding of the selected materials and their relationships between various parameters.
High transparency Bi2Se3 topological insulator nanoribbon Josephson junctions with low resistive noise properties
Venue: Applied Physics Letters
Year: 2019

Bi$_2$Se$_3$ nanoribbons, grown by catalyst free Physical Vapour Deposition, have been used to fabricate high quality Josephson junctions with Al superconducting electrodes. The conductance spectra (dI/dV) of the junctions show clear dip peak structures characteristic of multiple Andreev reflections. The temperature dependence of the dip peak features reveals a highly transparent Al/Bi$_2$Se$_3$ topological insulator nanoribbon interface and Josephson junction barrier. This is supported by the high values of the Bi$_2$Se$_3$ induced gap and of I$_c$R$_n$ (I$_c$ critical current, R$_n$ normal resistance of the junction) product both of the order of 160 \mu$eV, a value close to the Al gap. The devices present an extremely low relative resistance noise below 1$\times$10$ 12} \mu$m$^2$/Hz comparable to the best Al tunnel junctions, which indicates a high stability in the transmission coefficients of transport channels. The ideal Al/Bi$_2$Se$_3$ interface properties, perfect transparency for Cooper pair transport in conjunction with low resistive noise make these junctions a suitable platform for further studies of the induced topological superconductivity and Majorana bound states physics.
Hybrid surface acoustic wave/microstrip signal interference bandpass filters
Year: 2016

Radio frequency (RF) design techniques for the development of signal interference microwave bandpass filters (BPFs) with hybridised microstrip and surface acoustic wave (SAW) elements are reported. They make use of two original types of transversal filtering sections (TFSs) with embedded one port SAW resonators. The SAW resonators operate either as non resonating nodes or as an in band SAW BPF in their bi path circuit topologies. These new TFS approaches extend the suitability of signal interference BPFs to small fractional bandwidth (FBW) applications, while offering significant advantages in terms of filtering selectivity and occupied circuit size when compared to traditional solutions for narrow to moderate/wide band specifications. Broader FBWs than those attainable through most of the available all acoustic wave BPF configurations are also feasible with them. Moreover, a single type of SAW device is employed in the entire BPF structure, which results in a practical benefit regarding robustness to deviations in the prototype fabrication and assembly processes. The proposed filter design concepts are experimentally verified through the fabrication in microstrip technology and characterisation of two multi TFS series cascade based high order BPF prototypes with very narrow and moderate FBWs.
Paracentral acute middle maculopathy: precursor to macular thinning in sickle cell retinopathy
Venue: BMJ Case Reports
Year: 2017

We present a case of paracentral acute middle maculopathy (PAMM) in a patient with sickle cell disease (SCD) Though gradual capillary loss may contribute to pathophysiology of sickle cell retinopathy as well, our case suggests that PAMM may be the precursor lesion to macular thinning commonly observed in patients with SCD. In addition, fluorescein angiography may be unable to detect these acute vascular events occurring at the deep capillary plexus.
The Effect of Self, Peer and Teacher Correction on the Pronunciation Improvement of Iranian EFL Learners
Year: 2014

The concept of self correction and peer correction in foreign language teaching has been an important consideration in the past decades due to the increased attention to learner centered curricula. The researchers have concluded that active engagement happens when the students have to think and correct themselves. The purpose of this study was to investigate the effect of teacher, self and peer correction on the pronunciation improvement of Iranian EFL learners in oral productions. To do this, 45 participants were selected from among 60 English language learning students by assigning a PET test and they were divided into three groups. Some picture series were given to the participants to make and then tell a story based on the scripts. In the self correction group every participant had to correct her pronunciation errors individually, in the peer correction group the participants in pairs corrected each others' pronunciation errors and for the third group their errors were corrected by the teacher. This process continued for 15 sessions. A pre test and post test were administered. The results showed that the pronunciation of the self correction group improved more than the other two groups and peer correction group outperformed the teacher correction group.
The New Era Workplace Relationships: Is Social Exchange Theory Still Relevant?
Venue: Industrial and Organizational Psychology
Year: 2018

In this article, we argue that changes in workplace characteristics over the last few decades may affect work relationships and call for adjustments in the traditional theoretical framework used to understand them. Since the last quarter of the 20th century, there have been theories regarding changes in labor relationships following technological, political, globalization, and economical changes. However, we examine the changes in light of psychological theories rather than labor or industrial approaches. We review four main areas where social exchange theory (SET) has been implemented, address recent changes that challenge the traditional SET perspective, and propose alternative models. We refer to these models as "hybrid" as they integrate traditional SET premises with new era workplace characteristics. First, we describe several changes in workplace characteristics. Next, we review some of the most conventional applications of SET to work relationships. Finally, we critically examine whether this theory meets the requirements of work relationships in the new world of work and conclude by arguing that SET needs to be adjusted to reflect the assumption that frequent changes in employee and organizational characteristics in the new workplaces require similar frequent adjustments in exchange relationships.
3D printing of lightweight cellular composites.
Venue: Advanced materials
Year: 2014

A new epoxy based ink is reported, which enables 3D printing of lightweight cellular composites with controlled alignment of multiscale, high aspectratio fiber reinforcement to create hierarchical structures inspired by balsa wood. Young's modulus values up to 10 times higher than existing commercially available 3D printed polymers are attainable, while comparable strength values are maintained.
Observed variability of the East India Coastal Current on the continental slope during 2009 2018
Venue: Journal of Earth System Science
Year: 2020

We describe the variability of the East India Coastal Current (EICC) during 2009 2018 using data from ADCP (acoustic Doppler current profiler) moorings deployed on the continental slope in the western Bay of Bengal. The four moorings are deployed off Gopalpur \sim 19.5^\circ \mathrm{N} 19 5 N Visakhapatnam \sim 18^\circ \mathrm{N} 18 N Kakinada \sim 16^\circ \mathrm{N} 16 N and Cuddalore \sim 12^\circ \mathrm{N} 12 N on the Indian east coast. The longer data record allows us to attach a statistically more robust basis to the conclusions drawn by Mukherjee et al (2014) on the basis of four years (2009 2013) of ADCP data. The data confirm that the seasonal cycle dominates the variability of the EICC. The amplitude of the annual band varies over the time series. In the intra annual band, the variability switches between the semi annual and 120 day bands off Gopalpur, Visakhapatnam and Kakinada, but the semi annual band is stronger than the 120 day band off Cuddalore throughout the time series. Upward phase propagation is common in the seasonal bands, but downward phase propagation is common in the intra annual band off Cuddalore during the summer and winter monsoons, leading to stronger undercurrents there. Off Cuddalore, even the annual EICC appears as a shallow current. In contrast, the EICC appears as a deep flow off Gopalpur, Visakhapatnam, and Kakinada particularly during the spring inter monsoon. This deep flow is evident at these locations even in the intraseasonal (30 90 day) band; the longer data set suggests, however, that the intraseasonal variability does not necessarily peak during spring. The annual EICC is coherent along the coast, but it is only the semi annual band that shows a comparable coherence between Kakinada and Cuddalore: in the 120 day and intraseasonal bands, the EICC decorrelates along the coast. Wavelet analysis suggests significant variability at sub annual periods. The sub annual EICC exceeds $20\\mathrm{cm}\rm s} 1} 20 cm s 1 on many occasions, but it too decorrelates along the coast. The long ADCP record allows us to confirm the dominance of seasonality in the EICC regime in a robust fashion; the data show that the EICC tends to flow in its canonical poleward (equatorward) direction during spring (winter) This dominance of seasonality enhances the predictability of the EICC.
Oleocanthal Nutraceuticals for Alzheimer's Disease Amyloid Pathology: Novel Oral Formulations, Therapeutic, and Molecular Insights in 5xFAD Transgenic Mice Model
Venue: Nutrients
Year: 2021

Alzheimer's disease (AD) is a complex progressive neurodegenerative disorder affecting humans mainly through the deposition of Ab amyloid (Ab) fibrils and accumulation of neurofibrillary tangles in the brain. Currently available AD treatments only exhibit symptomatic relief but do not generally intervene with the amyloid and tau pathologies. The extra virgin olive oil (EVOO) monophenolic secoiridoid S oleocanthal (OC) showed anti inflammatory activity through COX system inhibition with potency comparable to the standard non steroidal anti inflammatory drug (NSAID) like ibuprofen. OC also showed positive in vitro, in vivo, and clinical therapeutic effects against cardiovascular diseases, many malignancies, and AD. Due to its pungent, astringent, and irritant taste, OC should be formulated in acceptable dosage form before its oral use as a potential nutraceutical. The objective of this study is to develop new OC oral formulations, assess whether they maintained OC activity on the attenuation of b amyloid pathology in a 5xFAD mouse model upon 4 month oral dosing use. Exploration of potential OC formulations underlying molecular mechanism is also within this study scope. OC powder formulation (OC PF) and OC solid dispersion formulation with erythritol (OC SD) were prepared and characterized using FT IR spectroscopy, powder X ray diffraction, and scanning electron microscopy (ScEM) analyses. Both formulations showed an improved OC dissolution profile. OC PF and OC SD improved memory deficits of 5xFAD mice in behavioral studies. OC PF and OC SD exhibited significant attenuation of the accumulation of Ab plaques and tau phosphorylation in the brain of 5xFAD female mice. Both formulations markedly suppressed C3AR1 (complement component 3a receptor 1) activity by targeting the downstream marker STAT3. Collectively, these results demonstrate the potential for the application of OC PF as a prospective nutraceutical or dietary supplement to control the progression of amyloid pathogenesis associated with AD.
"It's like she's talking about me" Exploring the value and potential impact of a YouTube film presenting a qualitative evidence synthesis about chronic pain: An analysis of online comments
Venue: Canadian journal of pain Revue canadienne de la douleur
Year: 2020

There is very limited research exploring the value and impact of qualitative research in chronic pain despite the large volume of research.  The aim of this study was to find out whether viewers' comments in response to a YouTube film, portraying findings from a qualitative evidence synthesis about living with pain, revealed any potential value or impact to viewers.  We collected online data posted in response to the film Struggling to Be Me. We used themes from a large review of qualitative research as an a priori analytic framework. We used inductive thematic analysis to distil the essence of data that did not fit this framework. A thematic analysis of online comments to evaluate the impact of an arts based health research film on people living with chronic pain is presented.  We developed two inductive themes that explored the value and potential impact of watching the film online: (1) It has given voice to our suffering and (2) it makes me feel that I am not alone. Two subthemes added insight to the a priori framework: First, I have had enough of me added insight to the theme my life is impoverished and confined; second, I am treated like a criminal because I take opioids added insight to the theme lost personal credibility.  Our findings indicate that watching the YouTube film has potential value and impact, giving voice to suffering and making people feel that they are not alone. There are specific ethical challenges relating to internet mediated research.
Chemical Composition and Antibacterial Activity of Iranian Lavandula x hybrida
Venue: Chemistry biodiversity
Year: 2017

Lavandin (Lavandula x hybrida) is an evergreen shrub and cultivated worldwide for its essential oil which possesses various biological activities. In this study, the essential oils were isolated from the leaves of ten lavandin populations in western Iran. The hydrodistilled essential oils were analyzed by GC FID/MS. Results indicated significant differences (P 0.05) among the various populations for the main essential oil constituents. The major components from different populations were 1,8 cineole (31.64 47.94% borneol (17.11 26.14% and camphor (8.41 12.68% In vitro antibacterial activity was evaluated against S. agalactiae, S. aureus, E. coli, and K. pneumoniae. The inhibition zones were in the range of 09.36 mm for S. aureus to 23.30 mm for E. coli. Results indicated that there was a significant correlation between essential oil composition and level of antibacterial efficacy expressed as inhibition zones.
FORMULASI MINUMAN EMULSI FUNGSIONAL MENGGUNAKAN KAROTEN KAPANG ONCOM MERAH
Year: 2019

Telah dilakukan penelitian tentang formulasi minuman emulsi fungsional menggunakan karoten kapang oncom merah.Penelitian ini bertujuan untuk mengetahui konsentrasi emulgator Tween 80 dalam memformulasi minuman fungsional dari karoten kapang oncom merah dalam bentuk emulsi yang stabil dan untuk mengetahui konsentrasi karoten yang digunakan untuk memformulasi minuman fungsional karoten kapang oncom merah dalam bentuk emulsi yang stabil.Penelitian dilakukan tiga tahap yaitu tahap isolasi karoten, tahap pembuatan minuman emulsi karoten dan evaluasi karoten.Kestabilan minuman emulsi ditentukan dengan terbentuknya misel yang dilihat menggunakan mikroskop dan perubahan fisik pada minuman emulsi. Hasil penelitian menunjukkan bahwa hingga penggunaan 1000 ppm karoten, minuman emulsi stabil sampai hari ke 15 dan mengalami kerusakan pada hari ke 21. Kata kunci Kapang Oncom merah, karoten, emulsi, minuman fungsional
Food loss and food waste research in the Arab world: a systematic review
Venue: Food Security
Year: 2018

Food loss and food waste are recognized as two of the most challenging dilemmas facing the world today with serious repercussions on food security, the environment, and global as well as regional and national economies. This is not different in the Arab countries where the food loss and food waste generated per person sometimes exceeds 210 kg per year. Literature searches indicate there is a paucity of applied studies that investigate the drivers, sources, management, quantification, policies, interventions, and initiatives to reduce food loss and food waste in the Arab world, a region with more than 400 million inhabitants. Despite the importance of the topic, only twenty five relevant articles were identified, providing limited data on food loss and food waste generation. The studies also use sampling procedures that do not allow for generalization of results over the Arab region or even for making comparisons among studies. The review concludes that further research on food loss and food waste along the food supply chain in the Arab world is necessary with a focus on trends, causes, and social, technological, behavioral, attitudinal, and cultural drivers. Investigating environmental and economic implications along with policy development and coping strategies, as well as consumer attitudes towards waste in general and food waste in particular are also important topics to be researched, especially given the variation in cultural and religious practices across the Arab world. The generation of such information and knowledge is indispensable for taking remedial action towards mitigating the problem of food loss and food waste.
An Analytical Framework for Coverage in Cellular Networks Leveraging Vehicles
Venue: IEEE Transactions on Communications
Year: 2018

This paper analyzes an emerging architecture of cellular network utilizing both planar base stations uniformly distributed in the Euclidean plane and base stations located on roads. An example of this architecture is that where, in addition to conventional planar cellular base stations and users, vehicles also play the role of both base stations and users. A Poisson line process is used to model the road network and, conditionally on the lines, linear Poisson point processes are used to model the vehicles on the roads. The conventional planar base stations and users are modeled by the independent planar Poisson point processes. We use Palm calculus to investigate the statistical properties of a typical user in such a network. Specifically, this paper discusses two different Palm distributions, with respect to the user point processes depending on its type: planar or vehicular. We derive the distance to the nearest base station, the association of the typical users, and the coverage probability of the typical user. Furthermore, we provide a comprehensive characterization of coverage of all possible cellular transmissions in this setting, namely, vehicle to vehicle, vehicle to infrastructure, infrastructure to vehicle, and infrastructure to infrastructure.
Differentiating between average and high performing public healthcare managers: implications for public sector talent management.
Venue: Australian health review a publication of the Australian Hospital Association
Year: 2020

ObjectiveEnsuring sufficient qualified and experienced managers is difficult for public sector healthcare organisations in Australia, with a limited labour market and competition with the private sector for talented staff. Although both competency based management and talent management have received empirical support in association with individual and organisational performance, there have been few studies exploring these concepts in the public healthcare sector. This study addresses this gap by exploring the perceived differences in demonstration of core competencies between average and higher performing managers in public sector healthcare organisations.MethodsMixed methods were used to define and measure a set of competencies for health service managers. In addition, supervisors of managers were asked to identify the differences in competence between the average and high performing managers reporting to them.ResultsSupervisors could clearly distinguish between average and higher performing managers and identified related competencies.ConclusionsThe consistent pattern of competence among community health and hospital public sector managers demonstrated by this study could be used to develop a strategic approach to talent management for the public healthcare sector in Australia.What is known about this topic?Although there are validated competency frameworks for health service managers, they are rarely used in practice in Australia.What does this paper add?This paper illustrates the perceived differences in competencies between top and average health services managers using a validated framework.What are the implications for practitioners?The public health sector could work together to provide a more effective and efficient approach to talent management for public hospitals and community health services.