nils-herrmann/clean_scirepeval huggingface dataset:
A high definition 3D exoscope as an alternative to the operating microscope in spinal microsurgery.
Venue: Journal of neurosurgery. Spine
Year: 2020

has been a standard for visualization and illumination of the surgical field in spinal microsurgery. However, due to its limitations (e.g. size, costliness, and the limited movability of the binocular lenses, in addition to discomfort experienced by surgeons due to the posture required) there are efforts to replace the OM with exoscopic video telescopes. The authors evaluated the feasibility of a new 3D exoscope as an alternative to the OM in spine surgeries.  Patients with degenerative pathologies scheduled for single level lumbar or cervical spinal surgery with use of a high definition 3D exoscope were enrolled in a prospective cohort study between January 2019 and September 2019. Age sex body mass index and procedure matched patients surgically treated with the assistance of the OM served as the control group. Operative baseline and postoperative outcome parameters were assessed. Periprocedural handling, visualization, and illumination by the exoscope, as well as surgeons' comfort level in terms of posture, were scored using a questionnaire.  A 3D exoscope was used in 40 patients undergoing lumbar posterior decompression (LPD) and 20 patients undergoing anterior cervical discectomy and fusion (ACDF) an equal number of controls in whom an OM was used were studied. Compared with controls, there were no significant differences for mean operative time (ACDF: 132 vs 116 minutes; LPD: 112 vs 113 minutes) and blood loss (ACDF: 97 vs 93 ml; LPD: 109 vs 55 ml) as well as postoperative improvement of symptoms (ACDF/Neck Disability Index: p 0.43; LPD/Oswestry Disability Index: p 0.76) No intraoperative complications occurred in either group. According to the attending surgeon, the intraoperative handling of instruments was rated to be comparable to that of the OM, while the comfort level of the surgeon's posture intraoperatively (especially during "undercutting" procedures) was rated as superior. In cases of ACDF procedures and long approaches, depth perception, image quality, and illumination were rated as inferior when compared with the OM. By contrast, for operating room nursing staff participating in 3D exoscope procedures, the visualization of intraoperative process flow and surgical situs was rated to be superior to the OM, especially for ACDF procedures.  A 3D exoscope seems to be a safe alternative for common spinal procedures with the unique advantage of excellent comfort for the surgical team, but the drawback is the still slightly inferior visualization/illumination quality compared with the OM.
QoE evaluation for video streaming over eMBMS
Venue: 2013 International Conference on Computing, Networking and Communications (ICNC)
Year: 2013

As the multicast standard for Long Term Evolution (LTE) Enhanced Multimedia Broadcast Multicast Service (eMBMS) was introduced by Third Generation Partnership Project (3GPP) to facilitate delivery of popular content to multiple users over a cellular network. If a large number of users is interested in the same content, for e.g. live sports, news clips, etc. multicast transmission can significantly lower the cost and make better use of the spectrum as compared to unicast transmission. In this paper, we study and analyze the quality of experience (QoE) at the end user during live video streaming over eMBMS. We consider a comprehensive end to end MBMS streaming frame work based on H.264/AVC encoded video content delivered in a chunked format over multiple segments using the File Delivery over Unidirectional Transport (FLUTE) protocol, combined with application layer (AL) forward error correction (FEC) based on Raptor and RaptorQ codes. Specifically, our study involves QoE evaluation in terms of startup delay, rebuffering percentage and Peak Signal to Noise Ratio (PSNR) metrics and provides performance evaluations to characterize the impact of various MBMS streaming, transport and AL FEC configurations on the end user QoE. We also propose a decoding strategy that takes into consideration the systematic structure of AL FEC codes to enhance performance when a source block decoding fails.
Editor web visual para HTML, CSS y JavaScript de apoyo a la docencia
Year: 2017

This paper presents a visual web editor to support teaching, which allows the creation of web pages that use HTML, CSS and JavaScript. The editor has a work area for placing visual elements, modifying their appearance through styles and adding validations to text input fields. Users of this editor can visualize the structure of a web page as a tree of nested elements, from which they can have access to such elements. For every web page produced in the editor three files are created: an HTML file for the content, a CSS file for the styles, and a JavaScript file for validations. This web editor allows web developers to create web pages and also supports teachers in activities related to web programming modules.
Hyperandrogenism and insulin resistance induced fetal loss: evidence for placental mitochondrial abnormalities and elevated reactive oxygen species production in pregnant rats that mimic the clinical features of polycystic ovary syndrome
Venue: The Journal of physiology
Year: 2019

Women with polycystic ovary syndrome (PCOS) commonly suffer from miscarriage, but the underlying mechanisms remain unknown. Herein, pregnant rats chronically treated with 5a dihydrotestosterone (DHT) and insulin exhibited hyperandrogenism and insulin resistance, as well as increased fetal loss, and these features are strikingly similar to those observed in pregnant PCOS patients. Fetal loss in our DHT+insulin treated pregnant rats was associated with mitochondrial dysfunction, disturbed superoxide dismutase 1 and Keap1/Nrf2 antioxidant responses, over production of reactive oxygen species (ROS) and impaired formation of the placenta. Chronic treatment of pregnant rats with DHT or insulin alone indicated that DHT triggered many of the molecular pathways leading to placental abnormalities and fetal loss, whereas insulin often exerted distinct effects on placental gene expression compared to co treatment with DHT and insulin. Treatment of DHT+insulin treated pregnant rats with the antioxidant N acetylcysteine improved fetal survival but was deleterious in normal pregnant rats. Our results provide insight into the fetal loss associated with hyperandrogenism and insulin resistance in women and suggest that physiological levels of ROS are required for normal placental formation and fetal survival during pregnancy.
Community Evolution Mining in Dynamic Social Networks
Year: 2011

Data that encompasses relationships is represented by a graph of interconnected nodes. Social network analysis is the study of such graphs which examines questions related to structures and patterns that can lead to the understanding of the data and predicting the trends of social networks. Static analysis, where the time of interaction is not considered (i.e. the network is frozen in time) misses the opportunity to capture the evolutionary patterns in dynamic networks. Specifically, detecting the community evolutions, the community structures that changes in time, provides insight into the underlying behaviour of the network. Recently, a number of researchers have started focusing on identifying critical events that characterize the evolution of communities in dynamic scenarios. In this paper, we present a framework for modeling and detecting community evolution in social networks, where a series of significant events is defined for each community. A community matching algorithm is also proposed to effciently identify and track similar communities over time. We also define the concept of meta community which is a series of similar communities captured in different timeframes and detected by our matching algorithm. We illustrate the capabilities and potential of our framework by applying it to two real datasets. Furthermore, the events detected by the framework is supplemented by extraction and investigation of the topics discovered for each community.
Recsys challenge 2018: automatic music playlist continuation
Venue: RecSys
Year: 2018

The ACM Recommender Systems Challenge 2018 focused on automatic music playlist continuation, which is a form of the more general task of sequential recommendation. Given a playlist of arbitrary length, the challenge was to recommend up to 500 tracks that fit the target characteristics of the original playlist. For the Challenge, Spotify released a dataset of one million user created playlists, along with associated metadata. Participants could submit their approaches in two tracks, i.e. main and creative tracks, where the former allowed teams to use solely the provided dataset and the latter allowed them to exploit publicly available external data too. In total, 113 teams submitted 1,228 runs in the main track; 33 teams submitted 239 runs in the creative track. The highest performing team in the main track achieved an R precision of 0.2241, an NDCG of 0.3946, and an average number of recommended songs clicks of 1.784. In the creative track, an R precision of 0.2233, an NDCG of 0.3939, and a click rate of 1.785 was realized by the best team.
Urban Governance and the Politics of Climate change
Year: 2017

Cities and urban areas are increasingly recognized as strategic arenas for climate change action. Processes of urban governance addressing climate change reconfigure the politics of climate change. Practitioners and scholars may be interested in the transformation of urban governance that follows global advances in climate change and urban policy. They may specifically be interested in how the urban governance of climate change is achieved and with what consequences for international development. This review evaluates the deep changes in urban governance that follow attempts to address climate change and how, in turn, attempts to govern climate change in urban areas reconfigure discourses informing the politics of climate change. The review shows that efforts to institutionalize climate change governance in urban areas reflect the conditions of specific contexts; that cities and sub national entities have gained traction in international climate policy through heterogeneous forms of network governance; that governing climate change in urban areas relates to the production and deployment of new climate rationalities, or governmentalities; and that governing experiences in cities are reconfiguring discourses of climate change governance toward an increasing emphasis on experimentation as a means to deal with the open ended processes of governing urban areas.
Low Power Wide Area Networks (LPWAN) for Communications of Mobile Sensor Data
Year: 2019

There are multiple options for communication of data to and from mobile sensors. For tracking systems, Global Navigation Satellite System (GNSS) is often used for localization and mobile phone technologies are used for transmission of data. Low power wide area networks (LPWAN) is a newer option for sensor networks including mobile sensors. We developed a tracking system use case application using LPWAN as communication channel for mobile sensor data. The choice of LPWAN has pros and cons. In this paper, we discuss the differences between LPWAN and other technologies as communication channel for sensor networks. We describe the LPWAN test setup and analyze its characteristics including transmission frequency, coverage, latency and communication range. CCS CONCEPTS Network performance analysis, Network components, Embedded and cyber physical systems, Sensor networks
Lexicon Based Sentiment Convolutional Neural Networks for Online Review Analysis
Year: 2020

With the growing availability and popularity of sentiment rich resources like blogs and online reviews, new opportunities and challenges have emerged regarding the identification, extraction, and organization of sentiments from user generated documents or sentences. Recently, many studies have exploited lexicon based methods or supervised learning algorithms to separately conduct sentiment analysis tasks; however, the former approaches ignore contextual information of sentences and the latter ones do not take sentiment information embedded in sentiment words into consideration. To tackle these limitations, we propose a new model named Sentiment Convolutional Neural Network (SentiCNN) to analyze the sentiments of sentences with both contextual and sentiment information of sentiment words, in which, contextual information is captured from word embeddings and sentiment information is identified using existing lexicons. We incorporate a Highway Network into our model to adaptively combine sentiment and contextual information from sentences by strengthening the connection between features of both sentences and their sentiment words. Furthermore, we propose three lexicon based attention mechanisms (LBAMs) for our SentiCNN model to find the most important indicators of sentiments and make predictions more effectively. Experiments over two well known datasets indicate that sentiment words, the Highway Network, and LBAMs contribute to sentiment analysis.
Metaphors of Metaphors: Reflections on the Use of Conceptual Metaphor Theory in Premodern Chinese Texts
Venue: Dao
Year: 2019

In this essay, I challenge the use of Conceptual Metaphor Theory (CMT) in the premodern Chinese setting. The dominant, implicit assumption in the literature is that conclusions reached by CMT on the ways in which cognition operates can be applied in toto and without qualification onto the makers of classical Chinese texts. I want to challenge this assumption and argue that textual evidence from premodern Chinese points to a different cognitive process. Differences in the use and conceptualization of image based thinking as well as differences in the understanding of the relationship between words, images, and the world reveal a different cognitive process. However, I do not wish to argue for a total abandonment of the insights of CMT. Rather, I call for the need to properly qualify its findings in light of premodern Chinese use and conceptions of image based language.
A Meta Analysis of News Media's Public Agenda Setting Effects, 1972 2015
Year: 2019

This study used rigorous meta analytic approaches to analyze empirical agenda setting studies published from 1972 to 2015, and 67 studies that met the inclusion criteria for analysis produced a moderate grand mean effect size of 0.487. A multiple regression analysis revealed one most notable predictor that classified the basis for the study correlation as either content categories or survey participants. A multiple regression of a subgroup using content categories produced homogeneity. The mean effect size for these studies was 0.51. This is an indication of consistency in findings across agenda setting studies and the presence of strong news media's public agenda setting effects.
An Improved Method to Estimate Turn on Switching Loss of 650V GaN HEMTs in Hard switching Topology
Venue: 2020 23rd International Conference on Electrical Machines and Systems (ICEMS)
Year: 2020

As new generation semiconductors, gallium nitride high electron mobility transistors (GaN HEMTs) are featured as high efficiency and high power density being utilized in various power conversion application. Compared with conventional silicon devices, GaN HEMTs have faster switching speed, but lower losses which include conduction loss and switching losses. Due to the high switching frequency and compact size of GaN HEMTs, it is of importance to assess their switching losses as precisely as possible. In this paper, an improved method to estimate the turn on switching loss of GaN HEMTs in hard switching topology is proposed and verified. The calculation results are compared with the double pulse test simulation results from LTspice and the experimental results.
EFL Indonesian Students' Attitude toward Writing in English
Year: 2016

Writing is a sophisticated language skill since it requires the ability not only to tailor ideas, but also to construct acceptable sentences to create a meaningful, logical, and comprehensible work. As a result, English as a Foreign Language (EFL) learners have to maximize their efforts to put their thoughts on the paper.  The data was collected by using questionnaire, interview, and documentation of self reflection essay. The result shows that none of the students has low attitude in writing, while fifty eight percent of them has moderate attitude to writing, and the rest of them have positive attitude to writing. The result from the interview also reveals that although the students have moderate attitude to writing, they view writing as difficult, and stressful. While those who have high attitude, mostly view writing as interesting and challenging. The finding also reveals several efforts the students do to improve their writing skill, among others are practice writing, reading a lot for knowledge and ideas, and using diary writing. The implication of the finding is discussed.
Twist projected two dimensional acoustic topological insulators
Venue: Physical Review B
Year: 2019

This work was supported by the National Key R&D Program of China (2017YFA0303702) by the National Natural Science Foundation of China (Grants No. 11634005, No. 11674155, No. 11604143, and No. 11621091) and partiallyby the "333 project" from Jiangsu Province (BRA2016350) Y.W. was supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR 2016 CRG5 2950)
Altered functional connectivity differs in stroke survivors with impaired touch sensation following left and right hemisphere lesions
Venue: NeuroImage: Clinical
Year: 2018

One in two survivors experience impairment in touch sensation after stroke. The nature of this impairment is likely associated with changes associated with the functional somatosensory network of the brain; however few studies have examined this. In particular, the impact of lesioned hemisphere has not been investigated. We examined resting state functional connectivity in 28 stroke survivors, 14 with left hemisphere and 14 with right hemisphere lesion, and 14 healthy controls. Contra lesional hands showed significantly decreased touch discrimination. Whole brain functional connectivity (FC) data was extracted from four seed regions, i.e. primary (S1) and secondary (S2) somatosensory cortices in both hemispheres. Whole brain FC maps and Laterality Indices (LI) were calculated for subgroups. Inter hemispheric FC was greater in healthy controls compared to the combined stroke cohort from the left S1 seed and bilateral S2 seeds. The left lesion subgroup showed decreased FC, relative to controls, from left ipsi lesional S1 to contra lesional S1 and to distributed temporal, occipital and parietal regions. In comparison, the right lesion group showed decreased connectivity from contra lesional left S1 and bilateral S2 to ipsi lesional parietal operculum (S2) and to occipital and temporal regions. The right lesion group also showed increased intra hemispheric FC from ipsi lesional right S1 to inferior parietal regions compared to controls. In comparison to the left lesion group, those with right lesion showed greater intra hemispheric connectivity from left S1 to left parietal and occipital regions and from right S1 to right angular and parietal regions. Laterality Indices were significantly greater for stroke subgroups relative to matched controls for contra lesional S1 (left lesion group) and contra lesional S2 (both groups) We provide evidence of altered functional connectivity within the somatosensory network, across both hemispheres, and to other networks in stroke survivors with impaired touch sensation. Hemisphere of lesion was associated with different patterns of altered functional connectivity within the somatosensory network and with related function was associated with different patterns of altered functional connectivity within the somatosensory network and with related functional networks.
The New Historicism And Other Old Fashioned Topics
Year: 2016

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qBase relative quantification framework and software for management and automated analysis of real time quantitative PCR data
Venue: Genome Biology
Year: 2006

Although quantitative PCR (qPCR) is becoming the method of choice for expression profiling of selected genes, accurate and straightforward processing of the raw measurements remains a major hurdle. Here we outline advanced and universally applicable models for relative quantification and inter run calibration with proper error propagation along the entire calculation track. These models and algorithms are implemented in qBase, a free program for the management and automated analysis of qPCR data.
Patterns of Strengths in U.S. Military Couples
Venue: Journal of Child and Family Studies
Year: 2019

The aim of the current study was to examine patterns of strengths among a large sample of military couples. Family resilience theory was utilized to operationalize strengths in couples, including individual beliefs represented by self mastery, positive outlook, and spirituality; organizational patterns represented by social support; and family communication.  We used data from the Millennium Cohort Family Study; the current study was composed of 9642 married military dyads representing all service branches and components.  Using latent profile analysis, results supported five patterns of strengths in couples. Over half (58.4% of the couples exhibited a pattern indicative of high strengths for both members of the couple, about a third (33.6% of couples exhibited two patterns in which one member of the couple was higher on strengths than the other member, and a small proportion (5.1% of couples exhibited a pattern of low strengths where both members of the couple were low on all indicators. The least common pattern (2.9% was of moderately high beliefs and social support, yet very low family communication. Sociodemographic and military correlates that most consistently distinguished high strengths in couples from other patterns were higher spouse education level and service member officer rank. Service members and spouses with poorer mental health, marital quality, and overall military satisfaction were more likely to exhibit patterns indicative of low strengths.  Overall, most military couples exhibited high strengths early in the military career cycle. Future longitudinal research is needed to examine how military experiences impact patterns of strengths and adjustment in couples over time.
The American Jury and the Death Penaltyt
Year: 2017

The reversal of civilized opinion on the death penalty during the past century and a half has been truly remarkable. It is an example of law in the process of radical change.1 As late as 1825 England had no less than 230 capital crimes on its law books. By the turn of the century legislative inroads had reduced the capital list to murder and treason, and, after an attempt to reduce it still further to certain types of murder, the English evolution has come to completion and the death penalty has now been abolished for all crimes. 2 Although in England the death penalty, wherever applicable by statute, was mandatory on the trial process, the English jury played a major role in its gradual attenuation. On many occasions the jury simply refused to convict a clearly guilty defendant in order to