Miracle-dz/UniFAR-FTUs huggingface dataset:
Review Sentiment Analysis Based on Deep Learning

With rapid development of E-commerce platforms, automated review sentiment analysis for commodities becomes a research focus, with main purpose to extract potential information within reviews for decision making of consumers. Traditional methods have made some progress on document level sentiment analysis, but with tremendous increasing of data scale, how to process high dimension of data fast and effectively becomes the largest limitation. In this paper, we import deep neural network which is appropriate for high dimension data analysis, and propose a framework of sentiment analysis based on deep learning. Experiments on different data scale and different domains show that the proposed method can solve high dimensional problem with good performance.
A new approach on the quality evaluation of tourist services

Abstract This paper emphasises how the quality of tourist services can be evaluated. The first part presents the best known models developed by specialists for service quality evaluation, then the authors created their own model. According to this model, a global quality evaluation indicator of tourist services was proposed, based on certain aspects of quality aimed by both the provider and the customer/consumer of tourist services. The calculus of this indicator was exemplified in the case of a Romanian tourist area, Vatra Dornei.
Dexmedetomidine Infusion for Analgesia and Prevention of Emergence Agitation in Children with Obstructive Sleep Apnea Syndrome Undergoing Tonsillectomy and Adenoidectomy

BACKGROUND:Dexmedetomidine, a specific &agr;2 agonist, has an analgesic-sparing effect and reduces emergence agitation. We compared an intraoperative dexmedetomidine infusion with bolus fentanyl to reduce perioperative opioid use and decrease emergence agitation in children with obstructive sleep apnea syndrome undergoing adenotonsillectomy (T&A). METHODS:One hundred twenty-two patients with obstructive sleep apnea syndrome undergoing T&A, ages 2 to 10 years, completed this prospective, randomized, U.S. Food and Drug Administration–approved study. After mask induction with sevoflurane, group D received IV dexmedetomidine 2 &mgr;g · kg−1 over 10 minutes, followed by 0.7 &mgr;g · kg−1 · h–1, and group F received IV fentanyl bolus 1 &mgr;g · kg−1. Anesthesia was maintained with sevoflurane, oxygen, and nitrous oxide. Fentanyl 0.5 to 1 &mgr;g · kg−1 was given to subjects in both groups for an increase in heart rate or systolic blood pressure 30% above preincision values that continued for 5 minutes. Observers in the postanesthesia care unit (PACU) were blinded to treatment groups. Pain was evaluated using the objective pain score in the PACU on arrival, at 5 minutes, at 15 minutes, then every 15 minutes for 120 minutes. Emergence agitation was evaluated at the same intervals by 2 scales: the Pediatric Anesthesia Emergence Delirium scale and a 5-point scale described by Cole. Morphine (0.05 to 0.1 mg · kg−1) was given for pain (score >4) or severe agitation (score 4 or 5) lasting more than 5 minutes. RESULTS:In group D, 9.8% patients needed intraoperative rescue fentanyl in comparison with 36% in group F (P = 0.001). Mean systolic blood pressure and heart rate were significantly lower in group D (P < 0.05). Minimum alveolar concentration values were significantly different between the 2 groups (P = 0.015). The median objective pain score was 3 for group D and 5 for group F (P = 0.001). In group D, 10 (16.3%) patients required rescue morphine, in comparison with 29 (47.5%) in group F (P = 0.002). The frequency of severe emergence agitation on arrival in the PACU was 18% in group D and 45.9% in group F (P = 0.004); at 5 minutes and at 15 minutes, it was lower in group D (P = 0.028). The duration of agitation on the Cole scale was statistically lower in group D (P = 0.004). In group D, 18% of patients and 40.9% in group F had an episode of SPO2 below 95% (P = 0.01). CONCLUSIONS:An intraoperative infusion of dexmedetomidine combined with inhalation anesthetics provided satisfactory intraoperative conditions for T&A without adverse hemodynamic effects. Postoperative opioid requirements were significantly reduced, and the incidence and duration of severe emergence agitation was lower with fewer patients having desaturation episodes.
Transparency and replicability in qualitative research: The case of interviews with elite informants

Research Summary We used interviews with elite informants as a case study to illustrate the need to expand the discussion of transparency and replicability to qualitative methodology. An analysis of 52 articles published in Strategic Management Journal revealed that none of them were sufficiently transparent to allow for exact replication, empirical replication, or conceptual replication. We offer 12 transparency criteria, and behaviorally‐anchored ratings scales to measure them, that can be used by authors as they plan and conduct qualitative research as well as by journal reviewers and editors when they evaluate the transparency of submitted manuscripts. We hope our article will serve as a catalyst for improving the degree of transparency and replicability of future qualitative research. Managerial Summary If organizations implement practices based on published research, will they produce results consistent with those reported in the articles? To answer this question, it is critical that published articles be transparent in terms of what has been done, why, and how. We investigated 52 articles published in Strategic Management Journal that reported interviewing elite informants (e.g., members of the top management team) and found that none of the articles were sufficiently transparent. These results lead to thorny questions about the trustworthiness of published research, but also important opportunities for future improvements about research transparency and replicability. We offer recommendations on 12 transparency criteria, and how to measure them, that can be used to evaluate past as well as future research using qualitative methods.
Blogging effects across supplier, retailer, and customer

ABSTRACT The author proposes contagion effect of blogging across suppliers, retailers, and customers, and has also tested the concept of conviction in this context. The conceptual framework was developed after an exhaustive review of literature. Blogging scale was developed and validated at different channel levels – supplier, retailer, and customer. Blogging contagion effects were tested along with their impact on other performance measures. Empirical results indicate contagion effects of blogging across the distribution channel. Blogging positively contributes to the performance of brand, retailer and customer-retailer loyalty. The impact of supplier blogging on retailer blogging, and the influence on blogging by the customer is moderated by electronic word of mouth, brand reputation and conviction. With increasing blog usage, this study offers a framework to promote blogging by supply channel partners as it positively affects performance related outcomes.
Knowledge valorization and the European Paradox: a case study

In this paper, data from the 2014 Innovation Union Scoreboard for Portugal is used to illustrate the actuality of the European Paradox and the need for policies to reinforce the downstream activities in the knowledge valorisation chain, if European Union (EU) Member States want to enforce the policy strategy stated in the Lisbon agenda in which the EU “set itself a new strategic goal for the next decade: to become the most competitive and dynamic knowledge-based economy in the world, capable of sustainable economic growth with more and better jobs and greater social cohesion”. Key-Words: innovation, knowledge valorisation, innovation scoreboard, European paradox, knowledge valorisation chain
The Hexameric Structure of a Conjugative VirB4 Protein ATPase Provides New Insights for a Functional and Phylogenetic Relationship with DNA Translocases*

Background: VirB4 ATPases are involved in protein transport in T4SS. Results: The structure of the conjugative VirB4 homologue TrwK has been determined by single-particle electron microscopy. Conclusion: TrwK forms hexamers and binds preferentially G4-quadruplex DNA as the coupling protein TrwB. Significance: The results provide structural and biochemical evidence for a common evolutionary scenario between DNA and protein translocases. VirB4 proteins are ATPases essential for pilus biogenesis and protein transport in type IV secretion systems. These proteins contain a motor domain that shares structural similarities with the motor domains of DNA translocases, such as the VirD4/TrwB conjugative coupling proteins and the chromosome segregation pump FtsK. Here, we report the three-dimensional structure of full-length TrwK, the VirB4 homologue in the conjugative plasmid R388, determined by single-particle electron microscopy. The structure consists of a hexameric double ring with a barrel-shaped structure. The C-terminal half of VirB4 proteins shares a striking structural similarity with the DNA translocase TrwB. Docking the atomic coordinates of the crystal structures of TrwB and FtsK into the EM map revealed a better fit for FtsK. Interestingly, we have found that like TrwB, TrwK is able to bind DNA with a higher affinity for G4 quadruplex structures than for single-stranded DNA. Furthermore, TrwK exerts a dominant negative effect on the ATPase activity of TrwB, which reflects an interaction between the two proteins. Our studies provide new insights into the structure-function relationship and the evolution of these DNA and protein translocases.
Comparison of cardioprotective efficacy resulting from a combination of atorvastatin and ischaemic post‐conditioning in diabetic and non‐diabetic rats

The aim of the present study was to investigate whether the combination of acute or chronic atorvastatin treatment with ischaemic post‐conditioning (IPost) exerts differential effects within the hearts of diabetic and non‐diabetic rats. Diabetic and non‐diabetic rats were randomly assigned to one of six groups: (i) a non‐conditioned group; (ii) a group subjected to IPost; (iii) acute statin treatment (50 μmol/L atorvastatin during reperfusion) without IPost; (iv) acute statin treatment plus IPost; (v) chronic statin treatment (10 mg/kg atorvastatin per day for 2 weeks) without IPost; and (vi) chronic statin treatment plus IPost. The hearts from rats in each group were subjected to 30 min global ischaemia, followed by 120 min reperfusion. Infarct size, haemodynamics and Akt and endothelial nitric oxide synthase (eNOS) expression were examined. In hearts from diabetic rats, IPost did not limit infarct size or recover contractile dysfunction. Acute atorvastatin treatment with IPost limited infarct size and recovered contractile dysfunction in hearts from both diabetic and non‐diabetic rats and further activated Akt and eNOS signalling pathways to enhance these protective effects in hearts from diabetic rats. Chronic statin treatment with IPost neither reduced infarct size nor increased recovery of myocardial dysfunction in hearts from both diabetic and non‐diabetic rats; this may be associated with inhibition of Akt and eNOS phosphorylation. The combination of acute atorvastatin treatment with IPost had a greater protective effect within hearts from diabetic rats, but chronic statin treatment with IPost failed to protect against reperfusion injury in hearts from either diabetic or non‐diabetic rats. These findings will be important for the design of future clinical investigations.
Detection of Zombie PCs Based on Email Spam Analysis

While botnets are used for various malicious activities, it is well known that they are widely used for email spam. Though the spam filtering systems currently in use block IPs that send email spam, simply blocking the IPs of zombie PCs participating in a botnet is not enough to prevent the spamming activities of the botnet because these IPs can easily be changed or manipulated. This IP blocking is also insufficient to prevent crimes other than spamming, as the botnet can be simultaneously used for multiple purposes. For this reason, we propose a system that detects botnets and zombie PCs based on email spam analysis. This study introduces the concept of “group pollution level” - the degree to which a certain spam group is suspected of being a botnet - and “IP pollution level” - the degree to which a certain IP in the spam group is suspected of being a zombie PC. Such concepts are applied in our system that detects botnets and zombie PCs by grouping spam mails based on the URL links or attachments contained, and by assessing the pollution level of each group and each IP address. For empirical testing, we used email spam data collected in an “email spam trap system” - Korea’s national spam collection system. Our proposed system detected 203 botnets and 18,283 zombie PCs in a day and these zombie PCs sent about 70% of all the spam messages in our analysis. This shows the effectiveness of detecting zombie PCs by email spam analysis, and the possibility of a dramatic reduction in email spam by taking countermeasure against these botnets and zombie PCs.
A robust numerical solution to reconstruct a globally relative shear modulus distribution from strain measurements

To noninvasively quantify tissue elasticity for differentiating malignancy of soft tissue, the authors previously proposed a two-dimensional (2-D) mechanical inverse problem in which simultaneous partial differential equations (PDE's) represented the target distribution globally of relative shear moduli with respect to reference shear moduli such that the relative values could be determined from strain distributions obtained by conventional ultrasound (US) or nuclear magnetic resonance (NMR) imaging-based analysis. Here, the authors further consider the analytic solution in the region of interest, subsequently demonstrating that the problem is inevitably ill-conditioned in real-world applications, i.e., noise in measurement data and improper configurations of mechanical sources/reference regions make it impossible to guarantee the existence of a stable and unique target global distribution. Next, based on clarification of the inherent problematic conditions, the authors describe a newly developed numerical-based implicit-integration approach that novelly incorporates a computationally efficient regularization method designed to solve this differential inverse problem using just low-pass filtered spectra derived from strain measurements. To evaluate method effectiveness, reconstructions of the global distribution are carried out using intentionally created ill-conditioned models. The resultant reconstructions indicate the robust solution is highly suitable, while also showing it has high potential to be applied in the development of an effective yet versatile diagnostic tool for quantifying the distribution of elasticity in various soft tissues.
Study on health assessment of generator winding insulation

Reliable operation of a generator is critically dependent on the integrity of its stator winding insulation. As this insulation is exposed to a wide variety of stresses like thermal, electrical and mechanical, it deteriorates on use over the time leading to failure. These stresses may be continuous, cyclic or intermittent. In addition, factors such as the presence of moisture, corrosive materials and radiation can lead directly to insulation breakdown, or to accelerate the aging process from voltage, temperature and mechanical vibration. Unexpected failure in the insulation may cause serious expenses for material, repair work and unplanned non-availability. To steer clear of unplanned outages periodic diagnostic tests on the insulation have become an integral part of the condition monitoring for generators. Such diagnostic tests generally include non-destructive measurements of various parameters associated with the winding insulation. In the paper efforts have been directed towards the residual life assessment of winding insulation of the existing units in India. This would help in not only the determination of the potential of the existing plants, but would also facilitate in planning for the capacity addition. Some researchers have adopted these methods for life prediction of the samples of the used winding insulations assuming different endurance models and others have tested to the breakdown voltage of winding, which is believed to be related to the residual life of insulation. This paper reviews the various life models under individual stresses and their combinations along with the statistical methods for estimation of residual life of stator winding insulation. The paper also critically discusses the various non-destructive tests and diagnostic parameters, which are helpful in assessing the health of the insulation and HV breakdown and withstand tests to correlate them to its residual life.
An information services framework for commercial extension services

Organisations offering extension services provide s ervices to farmers which include the provision of relevant and current information perta ining to agriculture. The increased use of mobile technologies is changing the way farmers acc ess information, specifically by using the Internet. This paper focuses on South African (SA) commercial farmers who currently use the Internet to establish their Internet access profile , th devices they utilise for Internet access and the purpose for which they use mobile technologies. An Internet and Mobile Device Usage Survey was conducted in the SA agricultural community. Farmers were found to have embraced mobile technolo gy and in excess of 70% of the farmers who participated in the study indicated that they u se their mobile devices to access the Internet. No brand of mobile phone or tablet computer was fou nd to dominate the agricultural community. Importantly, close to 50% of respondents i dicated that they owned and used a tablet. The primary reason for which mobile devices are used by farmers is for business purposes, including access to information about agr iculture. Agricultural organisations offering extension services could benefit from embracing the technology and exploring new ways to provide information services to their farmer base.
Short anxiety screening test—a brief instrument for detecting anxiety in the elderly

The Short Anxiety Screening Test (SAST), an easily administered rating scale, was developed to standardize the detection of anxiety disorder in the elderly, even, and especially, in the presence of depression. The instrument also included somatic complaints, often the manifestation of anxiety in the elderly. Failure to relate to the anxiety component in depression may result in the initial failure of antidepressant therapy.
Resolving Confusion in the Use of Concepts and Terminology in Intrapuparial Development Studies of Cyclorrhaphous Diptera.

Developmental studies of necrophagous insects are strongly needed to support medico-legal investigations, because minimum postmortem intervals (minPMI) can be estimated from development data for species collected from a forensic scene together with accurate temperature information from that scene. The life cycle of cyclorrhaphous flies, which include some of the most used forensic indicators, shows an unusual feature as the pupal stage and the subsequent development of the pharate adult take place inside an opaque, barrel-like puparium, formed from the cuticle of the third-instar larva (Fraenkel and Bhaskaran 1973). Although unusual this feature is not unique among insects, or even among Diptera, despite the statement of Proenca et al. (2014). The period from pupariation (i.e., puparium formation) until the emergence of the adult is of special importance for forensic studies, as this period lasts for >50% of the total immature development. However, unlike the larval stage where a quantitative measure of age (e.g., body length) can be modeled in relation to time, the puparium shows virtually no external age-related changes (Amendt et al. 2011). Nevertheless, the puparium can be removed in order to determine morphological markers related to age on the insect inside, which can then be used for simple age estimation. Accordingly, a number of recently published studies (e.g., Pujol-Luz and Barros-Cordeiro 2012, Defilippo et al. 2013, Proenca et al. 2014, Ma et al. 2015) have described age-related morphological landmarks in the intrapuparial development of several forensically important Diptera, chiefly blow flies (Calliphoridae). Our concern has to do with confusion regarding concepts and terminology frequently occurring in these kinds of intrapuparial development studies. It is very likely that much of the existing confusion is related to the wide use of the terms “pupa,” referring to any fly individual during its intrapuparial development (regardless of which …
Analysis of Twitter Reactions to Government Policies

With the increasing use of social media, especially Twitter, the way governments policies are perceived can be understood through the reactions they garner on twitter. In India, in recent times, there have been many significant policy changes like demonetization, Goods and Services Tax to name a few. Sentiment analysis of Twitter reaction to these policy changes across different regions can provide very useful insights. In this paper, we talk about sentiment analysis of twitter reactions, its use in the government policies context, the various methods which can be used for it and output visualization for better understanding.
Side scan sonar images attributes characterization for seabed mapping

The seabed characterization through side scan sonar images is generally related to the visual and subjective association between different reflection patterns or textures of the images and the types of sediments located on the seabed. The results of these studies are qualitative characterizations because they are subject to the discretion and expertise of the interpreter. In presence of granulometric variations the human eyes are not always able to detect the small variations in the reflection patterns because of their similarities. The aim of this study was to identify attributes of the image able to characterize granulometric variations among the patterns through the study of the behavior and distribution of the pixels in the images, processing and statistical analysis, contrast and other features. It was defined a methodology leaving aside the subjectivities of the interpreter by setting the standards to more quantitative characterization. The study was based on textural visual analysis and in statistical analysis of first and second-order. As second-order analysis, it was calculated the Gray-Level Co-Occurrence Matrix (GLCM) to calculate the properties of Homogeneity and Entropy of the images and try to standardize the reflection patterns. In visualization method, it was observed that textures are also characterized according to the frequencies and the parameters of data recording. The first-order statistical analysis showed some similarities in presence of the same kind of sediment. However, these results were not satisfactory as in the case of visual inspection. The correlation between Homogeneity and Entropy showed better results. These correlations presented similarities for a particular kind of sediment and differences with the lithological changes, organic matter content and the plasticity level of the sediment.
Compact modeling of nano-scale trapezoidal cross-sectional FinFETs

Analytical compact model for the drain current and trans-capacitances of undoped or lightly doped nanoscale FinFETs with trapezoidal cross section is presented. The compact model of rectangular FinFETs is applied in trapezoidal FinFETs using the concept of the equivalent device parameters. The model is compared with the results of three-dimensional numerical device simulations. The overall results reveal the very good accuracy of the proposed compact model, making it suitable for circuit design simulation tools.