nils-herrmann/clean_scirepeval huggingface dataset:
Antioxidant activity and polyphenol content in extracts from various parts of fresh and frozen mangosteen.
Venue: Acta scientiarum polonorum. Technologia alimentaria
Year: 2020

The search for new sources of natural antioxidants is very important because many diseases are caused by oxidative stress. Fruit which contain antioxidants are an important part of a healthy diet. The aim of this study was to evaluate the antioxidant activity of extracts of both the fresh and frozen peel and the flesh of Garcinia mangostana L.  The extracts from the fresh and frozen peel and the flesh of mangosteen were prepared by ultrasound assisted extraction using 20% 40% 70% and 96% (v/v) ethanol for 15, 30 or 60 minutes. The antioxidant potential was evaluated by the DPPH, ABTS, CUPRAC, FRAP and FIC methods, whereas the total phenolic content was measured using the Folin Ciocalteu (F C) technique. The contents of anthocyanins and flavonoids in the peel extracts were also determined.  In most cases, the highest antioxidant activity was observed in the fresh peel samples. It was higher than the antioxidant potential of the frozen peels and the fresh and frozen flesh. The ultrasound assisted extraction, in particular those lasting 30 or 60 minutes and using ethanol in concentrations higher than 20% (v/v) seemed to be an effective extraction process.  The obtained results suggest that G. mangostana, in particular its peels, could be a valuable source of antioxidants. The extraction parameters, such as the time or solvent concentration, as well as the type of plant material, had an impact on the tested properties of the extracts. However, more detailed studies on the antioxidant activity of the studied plants are required.
Complex affect dynamics add limited information to the prediction of psychological well being
Venue: Nature Human Behaviour
Year: 2019

Over the years, many studies have demonstrated a relation between emotion dynamics and psychological well being1. Because our emotional life is inherently time dynamic2 6, affective scientists argue that, next to how positive or negative we feel on average, patterns of emotional change are informative for mental health7 10. This growing interest initiated a surge in new affect dynamic measures, each claiming to capture a unique dynamical aspect of our emotional life, crucial for understanding well being. Although this accumulation suggests scientific progress, researchers have not always evaluated (a) how different affect dynamic measures empirically interrelate and (b) what their added value is in the prediction of psychological well being. Here, we address these questions by analysing affective time series data from 15 studies (n 1,777) We show that (a) considerable interdependencies between measures exist, suggesting that single dynamics often do not convey unique information, and (b) dynamic measures have little added value over mean levels of positive and negative affect (and variance in these affective states) when predicting individual differences in three indicators of well being (life satisfaction, depressive symptoms and borderline symptoms) Our findings indicate that conventional emotion research is currently unable to demonstrate independent relations between affect dynamics and psychological well being.Research into emotion dynamics and well being has, over the years, used an increasing number of dynamic measures to capture emotional change. Dejonckheere et al. show that these measures add little to the information conveyed by mean affect and its variance.
Study on Text Classification of MOOC Course Comments Based on Chinese Character level Convolutional Networks
Venue: 2018 International Computers, Signals and Systems Conference (ICOMSSC)
Year: 2018

With the rise of the educational big data and the development of MOOCs, a wide range of comments have come up. Now most of the existing MOOCs text classification models are for small scale comments, and fail to extract high level abstract information among characters. In this paper, crawler technology is used to crawl the comment data in MOOCs forums comprehensively, and a character table containing 5500 comment data is constructed then. In terms of word embedding operation, a text classification model of MOOCs comment data based on Chinese character level convolutional neural network is proposed to avoid the pre training process of word vector. The experiments show that our model could improve the classification accuracy comparing with traditional methods.
Expression of genes associated with immunity in the endometrium of cattle with disparate postpartum uterine disease and fertility
Venue: Reproductive biology and endocrinology RB&E
Year: 2009

BackgroundContamination of the uterine lumen with bacteria is ubiquitous in cattle after parturition. Some animals develop endometritis and have reduced fertility but others have no uterine disease and readily conceive. The present study tested the hypothesis that postpartum cattle that develop persistent endometritis and infertility are unable to limit the inflammatory response to uterine bacterial infection.MethodsEndometrial biopsies were collected several times during the postpartum period from animals that were subsequently infertile with persistent endometritis (n 4) or had no clinical disease and conceived to first insemination (n 4) Quantitative PCR was used to determine the expression of candidate genes in the endometrial biopsies, including the Toll like receptor (TLR 1 to 10) family of innate immune receptors, inflammatory mediators and their cognate receptors. Selected proteins were examined by immunohistochemistry.ResultsThe expression of genes encoding pro inflammatory mediators such as interleukins (IL1A, IL1B and IL6) and nitric oxide synthase 2 (NOS2) were higher during the first week post partum than subsequently. During the first week post partum, there was higher gene expression in infertile than fertile animals of TLR4, the receptor for bacterial lipopolysaccharide, and the pro inflammatory cytokines IL1A and IL1B, and their receptor IL1R2. The expression of genes encoding other Toll like receptors, transforming growth factor beta receptor 1 (TGFBR1) or prostaglandin E2 receptors (PTGER2 and PTGER4) did not differ significantly between the animal groups. Gene expression did not differ significantly between infertile and fertile animals after the first week postpartum. However, there were higher ratios of IL1A or IL1B mRNA to the anti inflammatory cytokine IL10, during the first week post partum in the infertile than fertile animals, and the protein products of these genes were mainly localised to the epithelium of the endometrium.ConclusionCattle may maintain fertility by limiting the inflammatory response to postpartum bacterial infection in the endometrium during the first week after parturition.
The Role of IT and Organizational Capabilities on Digital Business Value
Venue: Pac. Asia J. Assoc. Inf. Syst.
Year: 2019

The opportunities and threats that digital technologies like SMACIT (Social, Mobile, Analytics, Cloud and Internet of Things) bring to organizations are increasingly being explored by the academia and industry. Organizations face the challenge not only to use new technologies but to gain competitive advantage from such embracement in order to stay relevant in the market. This study aims to provide practical insights on how Small and Medium Enterprises (SMEs) can prepare to embrace Digital Technologies. For this, it proposes that a combination of both IT and Organizational capabilities can be the foundation for achieving Business Value with Digital Technologies or "Digital Business Value" IT capabilities are evaluated by the IT capability maturity framework (IT CMF) and Organizational Intelligence Quotient (Mendelson and Pillai, 1999) is used to evaluate organizational capabilities. Digital Business Value is defined as the achievement of business objectives using Digital Technologies (Riera Iijima, 2017) The target population was one hundred Japanese SMEs which were awarded by The Ministry of Economy, Trade and Industry due to their effective utilization of IT supporting business performance in the list of "Competitive IT Strategy SME Selection 100" over the years 2015, 2016 and 2017. Data collection was done with questionnaires sent to all the awarded organizations and collected 34 responses. A quantitative approach was used and the data analysis was done with correlation and regression analysis. Empirical evidence demonstrated that IT and Organizational capabilities are linked to Digital Business Value. A subset of IT capabilities like Risk Management, Business Planning among others was indeed related to Digital Business Value. In addition, Internal Knowledge Dissemination and Continuous Innovation dimensions from Organizational IQ showed relationship with Digital Business Value. This study unveiled that the combination of IT and Organizational capabilities leverage the value from Digital technologies. The outcomes from this study may be of reference to SMEs that look to embrace Digital Technologies as it shows which particular capabilities may be of interest for developing. This study extends the Digital Transformation literature in particular how dynamic capabilities work together in order to enable Digital Business Value
A Circularly Polarized Cavity Backed Stacked Patch Antenna for Wide Angle Beam Scanning Millimeter Wave Phased Array
Venue: 2020 International Symposium on Antennas and Propagation (ISAP)
Year: 2021

This paper presents design and measurement of a circularly polarized cavity backed patch antenna for a low profile active electronically scanned array with a beam scanning capability over a wide angle. The proposed antenna comprises upper patches, a spacer, and pin fed lower patches to achieve low axial ratio across a wide angle of view and high efficiency. Each component is bonded without any screws, which enhances the manufacturability of the antenna and prevents degradation of the radiation pattern. A 16 element array is fabricated and measured. The measured pattern for co polarization agrees well with the simulated one, and scan loss is approximately 5.5 dB in the 70 deg directions. In addition, low axial ratio of approximately 4.5 dB is obtained even in the 70 deg directions.
Globalisation and Deglobalisation Brazil
Year: 2018

In the years before the global financial crisis, emerging market economies (EMEs) saw robust global demand, substantial improvements in terms of trade and abundant capital inflows. Nevertheless, trade growth has been weak after the financial crisis, and whether this movement is permanent or transient is still an open question. This note discusses trends in globalisation, the macroeconomic and distributional effects of globalisation in EMEs, and complementary policies that may enable countries to better seize the benefits of globalisation, highlighting the Brazilian experience.<br><br>Full Publication: <a href="http:/ssrn.com/abstract=3331745" Globalisation and Deglobalisation</a>
Phenolic and non phenolic substrates oxidation by laccase at variable oxygen concentrations: Selection of bisubstrate kinetic models from polarographic data
Year: 2020

Using laccase as a case study, an alternative methodology for discrimination of bisubstrate mechanism types, useful for Bi Bi reactions when water is one of the products, is presented. A purified enzyme from fungal cultures of Ganoderma resinaceum and two reducing substrates: 2,2' azino bis(3 ethylbenzthiazoline 6 sulphonic acid) (ABTS) and 2,6 dimethoxyphenol (DMP) are used. Kinetic assays of ABTS or DMP oxidation using variable initial concentrations of dioxygen are performed in a closed system and depletion rates of dioxygen are measured using polarography. Seven bisubstrate models based on Michaelis Menten Bi Bi mechanisms are applied to the experimental data. Akaike information criterion, a penalized likelihood analysis, and Akaike weights are used for model selection. Results show that the more likely bisubstrate models for ABTS and DMP oxidation are ping pong and Theorell Chance, respectively. However, the catalytic efficiency of oxygen reduction to water exhibits similar values, and is compatible with a process relatively independent of reducing substrates and the bisubstrate mechanism type. Finally, Michaelis Menten constants towards dioxygen, 233 mM with ABTS and 700 mM with DMP, indicate that the soluble electron acceptor available for laccase catalyzed reactions, is far removed from saturation.
Variability and extremes of northern Scandinavian summer temperatures over the past two millennia
Year: 2012

article i nfo Palaeoclimatic evidence revealed synchronous temperature variations among Northern Hemisphere regions over the past millennium. The range of these variations (in degrees Celsius) is, however, largely unknown. We here present a 2000 year summer temperature reconstruction from northern Scandinavia and compare this timeseries with existing proxy records to assess the range of reconstructed temperatures at a regional scale. The new reconstruction is based on 578 maximum latewood density profiles from living and sub fossil Pinus sylvestris samples from northern Sweden and Finland. The record provides evidence for sub stantial warmth during Roman and Medieval times, larger in extent and longer in duration than 20th century warmth. The first century AD was the warmest 100 year period +0.60 degC on average relative to the 1951 1980 mean) of the Common Era, more than 1 degC warmer than the coldest 14th century AD (0.51 degC) The warmest and coldest reconstructed 30 year periods (AD 21 50=+1.05 degC, and AD 1451 80=1.19 degC) differ by more than 2 degC, and the range between the five warmest and coldest recon structed summers in the context of the past 2000 years is estimated to exceed 5 degC. Comparison of the new timeseries with five existing tree ring based reconstructions from northern Scandinavia revealed synchro nized climate fluctuations but substantially different absolute temperatures. Level offset among the various reconstructions in extremely cold and warm years (up to 3 degC) and cold and warm 30 year periods (up to 1.5 degC) are in the order of the total temperature variance of each individual reconstruction over the past 1500 to 2000 years. These findings demonstrate our poor understanding of the absolute temperature vari ance in a region where high resolution proxy coverage is denser than in any other area of the world.
Genome wide identification of polycomb associated RNAs by RIP seq.
Venue: Molecular cell
Year: 2010

Polycomb proteins play essential roles in stem cell renewal and human disease. Recent studies of HOX genes and X inactivation have provided evidence for RNA cofactors in Polycomb repressive complex 2 (PRC2) Here we develop a RIP seq method to capture the PRC2 transcriptome and identify a genome wide pool of >9000 PRC2 interacting RNAs in embryonic stem cells. The transcriptome includes antisense, intergenic, and promoter associated transcripts, as well as many unannotated RNAs. A large number of transcripts occur within imprinted regions, oncogene and tumor suppressor loci, and stem cell related bivalent domains. We provide evidence for direct RNA protein interactions, most likely via the Ezh2 subunit. We also identify Gtl2 RNA as a PRC2 cofactor that directs PRC2 to the reciprocally imprinted Dlk1 coding gene. Thus, Polycomb proteins interact with a genome wide family of RNAs, some of which may be used as biomarkers and therapeutic targets for human disease.
LesionMap: A Method and Tool for the Semantic Annotation of Dermatological Lesions for Documentation and Machine Learning
Year: 2020

Diagnosis and follow up of patients in dermatology rely on visual cues. Documentation of skin lesions in dermatology is time consuming and inaccurate. Digital photography is resource intensive, difficult to standardize, and has privacy concerns. We propose a simple method LesionMap and an electronic health software tool LesionMapper for semantically annotating dermatological lesions on a body wireframe. We discuss how the type, distribution, and progression of lesions can be represented in a standardized way. The tool is an open source JavaScript package that can be integrated into web based electronic medical records. We believe that LesionMapper will facilitate documentation in dermatology that can be used for machine learning in a privacy preserving manner.
HUBUNGAN PERSEPSI IBU TENTANG HYPNOBIRTHING DENGAN PENGURANGAN RASA NYERI PADA IBU BERSALIN NORMAL DI KLINIK DIANA MEDAN TAHUN 2018
Venue: Jurnal Ilmiah Kebidanan (Scientific Journal of Midwifery)
Year: 2019

Hypnobirthing merupakan kombinasi antara proses kelahiran alami dengan hypnosis untuk membangun persepsi positif dan rasa percaya diri serta menurunkan ketakutan, kecemasan, tenang dan panik sebelum dan setelah persalinan.Hypnobirthingbertujuanagar ibu dapat melahirkan dengan nyaman, cepat dan lancar dan menghilangkan rasa sakit melahirkan tanpa bantuan obat bius apapun. Tujuan penelitian ini untuk mengetahui hubungan persepsi ibu tentang hypnobirthing dengan pengurangan rasa nyeri pada ibu bersalin. Penelitian ini menggunakan survey analitik dengan pendekatan cross sectional. Populasi pada penelitian ini adalah ibu bersalin di Klinik Diana Tahun 2018, jumlah sampel sebanyak 30 responden diambil dengan persepsi ibu tentang total sampling. Hasil penelitian yang di dapatkan dari ibu yang melakukan persepsi ibu tentang Hypnobirthing dari 30 responden dapat di ketahui bahwa ada17 responden (56,7% dengan pelaksanaan metode hypnobirthing dan mengalami nyeri sedang dan 18 responden (60,0% dan minoritas ibu mengalami persepsi ibu tentang hypnobirthing sebanyak 13 responden (43,3% dan yang mengalami nyeri hebat sebanyak 12 responden (40,0% Setelah dilakukan uji Chi Square terdapat hubungan persepsi ibu tentang Hypnobeirthing dengan pengurangan rasa nyeri pada ibu bersalin p value e 0,013 sig a 0,005. Dari hasil penelitian, ada hubungan metode hypnobirthing dengan pengurangan rasa nyeri pada ibu bersalin di Klinik Diana Tahun 2018. Maka disarankan kepada tenaga kesehatan agar kiranya dapat mempromosikan persalinan dengan persepsi ibu tentang Hypnoberthing dan senantiasa turut serta dalam memberikan informasi kepada ibu ibu tentang persiapan selama kehamilan dan persalinan dengan menggunakan persepsi ibu tentang hypnoberthing.
Big Data technologies: A survey
Venue: J. King Saud Univ. Comput. Inf. Sci.
Year: 2018

Developing Big Data applications has become increasingly important in the last few years. In fact, several organizations from different sectors depend increasingly on knowledge extracted from huge volumes of data. However, in Big Data context, traditional data techniques and platforms are less efficient. They show a slow responsiveness and lack of scalability, performance and accuracy. To face the complex Big Data challenges, much work has been carried out. As a result, various types of distributions and technologies have been developed. This paper is a review that survey recent technologies developed for Big Data. It aims to help to select and adopt the right combination of different Big Data technologies according to their technological needs and specific applications' requirements. It provides not only a global view of main Big Data technologies but also comparisons according to different system layers such as Data Storage Layer, Data Processing Layer, Data Querying Layer, Data Access Layer and Management Layer. It categorizes and discusses main technologies features, advantages, limits and usages.
Further Validation of the Social and Emotional Health Survey for High School Students
Year: 2014

The Social Emotional Health Survey (SEHS) was developed with the aim of assessing core cognitive dispositions associated with adolescents' positive psychosocial development. Using a new sample, the present study sought to extend previous SEHS research by coadministering it with the Behavioral Emotional Screening System (BESS) The sample included 2,240 students in Grades 9 12 from two comprehensive high schools located in a major west coast USA city. A majority of the students were of Latino/a heritage (72 and had experienced disadvantaged economic circumstances (80 at school 1 and 68 at school 2) Confirmatory factor analyses supported the original SEHS factor structure composed of the first order constructs of belief in self, belief in others, emotional competence, and engaged living, which parsimoniously mapped on to a second order "covitality" factor. Complete factorial invariance was found across four groups formed by crossing gender (male, female) and age (ages 13 15, ages 16 18) Latent means analysis found several small to moderate effects size differences, primarily for the belief in self and belief in others first order latent traits. A SEM analysis found that the SEHS measurement model, including covitality was a significant negative predictor of psychological distress as measured by the BESS and was positively associated with students' end of semester grade point average. The discussion focuses on implications for conceptualizing the core psychological components of adolescents' positive quality of life and how schools can use the SEHS as part of a whole school procedure to screen for students' complete mental health.
If painters give you lemons, squeeze the knowledge out of them. A study on the visual perception of the translucent and juicy appearance of citrus fruits in paintings
Venue: Journal of vision
Year: 2020

Citrus fruits are characterized by a juicy and translucent interior, important properties that drive material recognition and food acceptance. Yet, a thorough understanding of their visual perception is still missing. Using citrus fruits depicted in 17th century paintings as stimuli, we ran three rating experiments. In Experiment 1, participants rated the perceived similarity in translucency or juiciness of the fruits. In Experiment 2, different groups of participants rated one image feature from a list obtained in a preliminary experiment. In Experiment 3, translucency and juiciness were rated. We constructed two dimensional perceptual spaces for both material properties and fitted the ratings of the image features into the spaces to interpret them. "Highlights," "peeled side," "bumpiness," and "color saturation" fit the juiciness space best and were high for the highly juicy stimuli. "Peeled side," "intensity of light gradient," "highlights," and "color saturation" were the most salient features of the translucency space, being high for the highly translucent stimuli. The same image features were also indicated in a 17th century painting manual for material depiction (Beurs, 1692; Beurs, in press) Altogether, we disclosed the expertise of painters with regard to material perception by identifying the image features that trigger a visual impression of juiciness and translucency in citrus fruits.