Miracle-dz/UniFAR-FTUs huggingface dataset:
Effect of In-Office Bleaching on Color and Surface Roughness of Composite Restoratives

Objectives: The purpose of this study was to determine color changes and surface roughness of composites when they were subjected to in-office bleaching. Methods: 12 discs 15 mm in diameter and 2 mm thick were prepared from two shades (A2 & A4) of two composites, Durafil VS (DF) and TPH3 (TPH). Specimens were polished and stored in distilled water for 24 hours at 37°C before being subjected to bleaching, staining, and re-bleaching. Each of the groups of specimens (DF-A2, DF-A4, TPH-A2 and TPH-A4) were subdivided into three subgroups (n=4) and bleached with Beyond, LumaWhite-Plus, and Opalescence-Boost. Specimens were then stained by immersing them in a coffee solution for 48 hours at 37°C, and then they were re-bleached. Colorimetric measurements were performed at baseline, after bleaching, after staining, and after re-bleaching. Surface roughness was determined with environmental SEM before and after bleaching. Data were statistically-analyzed. Results: None of the bleaching systems notably changed the color of composites (delta-E<2). Coffee staining affected DF specimens more than TPH. Stained specimens showed variable responses to whitening with no significant color change observed with TPH (delta-E<2) and significant changes observed with DF. Surface roughness significantly changed with bleaching, but the degree varied according to composite shade and bleaching agent. Conclusions: Three in-office bleaching agents had no significant color changes on two composites. DF showed more color change than TPH when immersed in coffee. Stained composites showed different degrees of whitening, with DF showing more response. Bleaching may adversely affect the surface texture of composites. Dentists should take into consideration that composite restorations may not respond to bleaching in the same way that natural teeth do.
Content-based feedback 1 Supporting content-based feedback in online writing evaluation with LSA

This paper describes tests of an automated essay grader and critic that uses Latent Semantic Analysis. Several methods which score the quality of the content in essays are described and tested. These methods are compared against human scores for the essays and the results show that LSA can score as accurately as the humans. Finally, we describe the implementation of the essay grader/critic in an undergraduate course. The outcome showed that students could write and revise their essays online, resulting in improved essays. Implications are discussed for the use of the technology in undergraduate courses and how it can provide an effective approach to incorporating more writing both in and outside of the classroom. Content-based feedback 3
Simplifying LCA Using Indicator Approaches - A Framework -

Life Cycle Assessment (LCA) is a preferred technique for assessing the environmental impact of products considering all environmental aspects over the full product life cycle. However, a number of drawbacks limit a continual and pro-active application of LCA in the design process. Indicators have been proposed as an alternative approach to LCA. This paper provides a brief survey of indicator approaches, and distinguishes three major categories: environmental indicators, environmental impact drivers, and environmental estimators. The environmental indicator approach reduces the extensive data gathering efforts connected to tracing all life cycle processes and their related elementary flows by making use of average data for common sections of a product life cycle. Environmental impact drivers can be defined as technical product attributes for which a strong relationship with the product's environmental performance is presumed or proven. The environmental estimator approach uses these readily available environmental impact drivers, which are subsequently mutually weighted and summed in order to estimate an environmental performance indicator. Finally, a framework is presented in which the indicator approaches are considered the core of a Product Oriented Environmental Management System (POEMS). This framework is illustrated with the example of a green design and supply chain management system for railway vehicles.
Contesting ‘Traditional’ Masculinity and Men's Sexuality in Kwadukuza, South Africa

In this paper I examine the question of how masculinities and men's sexualties challenge, seek to become, and are resisted from becoming, part of tradition, as well as how such a confrontation is contigent on space. I employ the case of a famous ‘traditional’ gay wedding that took place in the relatively small township of KwaDukuza in KwaZulu, South Africa, and mediated responses to the wedding, to consider how we might better understand this question. In pointing out men's genders and sexualities and their traditions as discursive practices connected to specific places and temporalities I hope to raise the possibility of finding spaces for transforming gender relations and liberating masculinities.
Professors and students’ perceptions towards oral corrective feedback in an english language teaching program

The purpose of this study was to highlight the perceptions that professors and students of an English Language Teaching program had regarding oral corrective feedback in language classes. The research was carried out in a Colombian T-state University in Pereira with 7 male and female professors that teach language courses, and 15 male and female students. The methods implemented for collecting data were individual interviews, observations, and virtual questionnaires in order to gather strong evidence from classroom events, and students and professors’ perceptions. The question that guided the investigation was what can be said about professors’ perceptions and students’ attitudes in regards to the oral corrective feedback given in the language courses of an English Language Teaching program in Pereira? The results demonstrated that although the professors demonstrated to be aware of the importance of corrective feedback to improve speaking skill, the provision of it is not given in a conscious way; besides, the results also showed professors’ concern in the negative effects that corrective feedback can produce on students. As a final point, this study intended to show the importance that corrective feedback has in the academic preparation of the future English teachers with the purpose to help their future learners to improve their speaking language competence within a friendly and collaborative class environment.
Early Intrahepatic Accumulation of CD8+ T Cells Provides a Source of Effectors for Nonhepatic Immune Responses1

Interactions between the liver and CD8+ T cells can lead to tolerance, due in part to CD8+ T cell death. To test whether this was the case in an extrahepatic infection, we investigated the fate and effector capacity of intrahepatic CD8+ T cells during lung-restricted influenza infection in mice. Virus-specific T cells accumulated in livers without detectable intrahepatic presentation of viral Ags, and this accumulation was not restricted to the contraction phase, but was apparent as early as day 5. Intrahepatic influenza-specific cells were functionally similar to those recovered from the bronchioalveolar lavage, based on ex vivo cytokine production and specific target lysis. Both adoptive transfer of liver lymphocytes and orthotopic liver transplant of organs containing accumulated effector T cells revealed that activated CD8s from the liver were viable, expanded during reinfection, and generated a memory population that trafficked to lymphoid organs. Thus, intrahepatic CD8+ T cells re-enter circulation and generate functional memory, indicating that the liver does not uniformly incapacitate activated CD8+ T cells. Instead, it constitutes a substantial reservoir of usable Ag-specific effector CD8+ T cells involved in both acute and recall immune responses.
Harmonic analysis of slip power recovery drives

A method of evaluating harmonic currents and voltages associated with slip power recovery drives is presented. The rectifier commutation overlap and DC link current ripple are included in the analysis by using a hybrid between the traditional d-q and a-b-c induction motor models. The harmonic components are determined from closed-form expressions which are functions of the numerical values of the distorted waveforms. Computer simulations illustrate the nonperiodic nature of the stator currents and typical harmonic contents of rotor phase current and voltage as well as inverter current at various speed values. <<ETX>>
Emotion and Aesthetic Value

Aesthetics is a normative domain. We evaluate artworks as better or worse, good or bad, great or grim. I will refer to a positive appraisal of an artwork as an aesthetic appreciation of that work, and I refer to a negative appraisal as aesthetic depreciation. (I will often drop the word " aesthetic. ") There has been considerable amount of work on what makes an artwork worthy of appreciation, and less, it seems, on the nature of appreciation itself. These two topics are related, of course, because they nature of appreciation may bear on what things are worthy of that response, or at least on what things are likely to elicit it. So I will have some things to say about the latter. But I want to focus in this discussion on appreciation itself. When we praise a work of art, when we say it has aesthetic value, what does our praise consist in? This is a question about aesthetic psychology. I am interested in what kind of mental state appreciation is. What kind of state are we expressing when we say a work of art is " good " ? This question has parallels in other areas of value theory. In ethics, most notably, there has been much attention lavished on the question of what people express when they refer to an action as " morally good. " One popular class of theories, associated with the British moralists and their followers, posits a link between moral valuation and emotion. To call an act morally good is to express an emotion toward that act. I think this approach to morality is right on target (Prinz, 2007). Here I want to argue that an emotional account of aesthetic valuation is equally promising. There are important differences between the two domains, but both have an affective foundation. I suspect that valuing of all kinds involves the emotions. Here I will inquire into the role of emotions in aesthetic valuing. I will not claim that artworks express emotions or even that they necessarily evoke emotions. I will claim only that when we appreciate a work, the appreciation consists in an emotional response. I will begin by arguing that emotions are involved in appreciation, and then I will look more specifically at which emotions are involved. Two methodological caveats are in order before we begin. First, I will not survey the important philosophical theories …
Association between Venous Angioarchitectural Features of Sporadic Brain Arteriovenous Malformations and Intracranial Hemorrhage

BACKGROUND AND PURPOSE: Intracranial hemorrhage is the most serious outcome for brain arteriovenous malformations. This study examines associations between venous characteristics of these lesions and intracranial hemorrhage. MATERIALS AND METHODS: Statistical analysis was performed on a prospectively maintained data base of brain AVMs evaluated at an academic medical center. DSA, CT, and MR imaging studies were evaluated to classify lesion side, drainage pattern, venous stenosis, number of draining veins, venous ectasia, and venous reflux. Logistic regression analyses were performed to identify the association of these angiographic features with intracranial hemorrhage of any age at initial presentation. RESULTS: Exclusively deep drainage (OR, 3.42; 95% CI, 1.87–6.26; P < .001) and a single draining vein (OR, 1.98; 95% CI, 1.26–3.08; P = .002) were associated with hemorrhage, whereas venous ectasia (OR, 0.52; 95% CI, 0.34–0.78; P = .002) was inversely associated with hemorrhage. CONCLUSIONS: Analysis of venous characteristics of brain AVMs may help determine their prognosis and thereby identify lesions most appropriate for treatment.
Morphological identification of parasitic nematode infective larvae of small ruminants and cattle: a practical lab guide.

In 2004, a new concept was introduced for simplifying identification of larvae of the common nematodes of cattle, sheep and goats that comprises estimates of the lengths of the sheath tail extensions of infective third-stage larvae (L3) of each genus and/or species to that of Trichostrongylus spp. , instead of having to be dependent only on measurements in micrometre. For example, if the mean length of the sheath tail extension (the extension of the sheath caudad, beyond the caudal tip of the larva) of Trichostrongylus colubriformis and Trichostrongylus axei is assumed to be 'X', then that of Haemonchus contortus is 2.0-2.7 'X' - a difference that is not difficult to estimate. An additional new approach suggested now, particularly for L3 of species and/or genera difficult to differentiate (such as Chabertia ovina and Oesophagostomum columbianum), is to estimate the proportion of the larval sheath tail extension comprising a terminal thin, whip-like filament. For the experienced person, it is seldom necessary to measure more than one or two sheath tail extensions of L3 in a mixed culture, because the identity of most of the remaining L3 can thereafter be estimated in relation to those measured, without having to take further measurements. The aim of this article was to present the novel approach in the form of a working guide for routine use in the laboratory. To facilitate identification, figures and a separate organogram for each of small ruminants and cattle have been added to illustrate the distinguishing features of the common L3.
Using a life course perspective to study significant life events as contexts of development and change

ii Acknowledgements . iv List of Tables . vii List of Figures . viii Chapter 1 – General Introduction . 1 Chapter 2 – Determining latent classes of cumulative family structure experiences and examining demographic characteristics of membership and the influence on individual well-being in emerging adulthood . 14 Introduction . 14 Method . 27 Results . 31 Discussion . 38 Chapter 3 – Relationship education for incarcerated adults: Exploring program outcomes and moderators of change . 6
Focus of Attention in the Hearsay-II Speech Understanding System

Using the concepts of stimulus and response frames of scheduled Knowledge source instantiations, competition among alternative responses, goals, and the desirability of a knowledge source instantiation, a general attentional control mechanism is developed. This general focusing mechanism facilitates the experimental evaluation of a variety of specific attentional control policies (such as best-first, bottom-up, and top-down search strategies) and allows the modular addition of specialized heuristics for the speech understanding task. Empirical results demonstrate the effectiveness of the focusing principles, and possible directions for future research are considered.
Service Quality in Software-as-a-Service: Developing the SaaS-Qual Measure and Examining Its Role in Usage Continuance

Despite the need to better understand how customers of software-as-a-service (SaaS) solutions perceive the quality of these software services and how these perceptions influence SaaS adoption and use, there is no extant measure that comprehensively captures service quality evaluations in SaaS. Based on previous SERVQUAL and SaaS literature, field interviews and focus groups, a card-sorting exercise, and two surveys of SaaS using companies, we develop, refine, and test SaaS-Qual, a zones-of-tolerance (ZOT)-based service quality measurement instrument specifically for SaaS solutions. Besides validating already established service quality dimensions (i.e., rapport, responsiveness, reliability, and features), we identify two new factors (i.e., security and flexibility) that are essential for the evaluation of service quality of SaaS solutions. SaaS-Qual demonstrates strong psychometric properties and shows high nomological validity within a framework that predicts the continued use of SaaS solutions by existing customers. In addition to developing a validated instrument that provides a fine-grained measurement of SaaS service quality, we also enrich existing research models on information systems continuance. Moreover, the SaaS-Qual instrument can be used as a diagnostic tool by SaaS providers and users alike to spot strengths and weaknesses in the service delivery of SaaS solutions.
Simulating self-gravitating systems on parallel computers

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Sex differentials in predictors of mortality for patients with adult-onset diabetes: a population-based follow-up study in Beer-Sheva, Israel.

OBJECTIVE To test the hypothesis that factors predicting mortality differ between diabetic men and women. RESEARCH DESIGN AND METHODS A total of 498 known patients with diabetes residing in a well-defined geographical area and receiving primary health care in 3 primary care community clinics were interviewed and examined between 1988 and 1990. RESULTS By 31 July 1998, after a mean follow-up period of 7.8 years, 148 patients (68 men and 80 women) had died (29.7%). No statistical differences in survival rate or in the specific causes of death were found between men and women. In the univariate analysis of factors examined at baseline, GHb levels were significantly higher among women who died compared with women who survived, but this was not the case for men. Conversely, a trend of higher triglyceride and uric acid levels was found for men who died compared with men who survived, but this was not the case for women. Multivariate Poisson regression analysis showed significantly higher risk ratios for mortality in men > or = 63 years of age, men with microalbumin excretion > or = 30 mg/l, and men with higher triglyceride levels. In contrast, the analysis in women showed that higher GHb and creatinine levels and a reported history of heart disease were the only factors at the baseline examination significantly and independently associated with an increased risk ratio of mortality. CONCLUSIONS The results suggest the existence of sex-specific interactions with various metabolic factors associated with diabetes that may have a different effect on mortality for each sex.
Sibling Abuse Hidden Physical Emotional And Sexual Trauma

Thank you very much for reading sibling abuse hidden physical emotional and sexual trauma. As you may know, people have search numerous times for their favorite novels like this sibling abuse hidden physical emotional and sexual trauma, but end up in infectious downloads. Rather than reading a good book with a cup of tea in the afternoon, instead they are facing with some infectious virus inside their desktop computer.
The Effects of Initially Misclassified Data on the Effectiveness of Discriminant Function Analysis and Finite Mixture Modeling

Classification procedures are common and useful in behavioral, educational, social, and managerial research. Supervised classification techniques such as discriminant function analysis assume training data are perfectly classified when estimating parameters or classifying. In contrast, unsupervised classification techniques such as finite mixture models (FMM) do not require, or even use if available, knowledge of group status to estimate parameters or classifying. This study investigates the impact of two types of misclassification errors on the classification accuracy of discriminant function analysis (both linear [LDA] and quadratic [QDA]) and FMM for two groups with a single predictor. Analytic and Monte Carlo results are provided for a variety of misclassification scenarios to investigate the performance of the two methods. Discriminant function techniques recovered the highest overall percentages of correctly classified data, whereas FMM captured higher percentages of the smaller group when group sizes are unequal. LDA marginally outperformed QDA under misclassified conditions.
Learning Supervised Topic Models from Crowds

The growing need to analyze large collections of documents has led to great developments in topic modeling. Since documents are frequently associated with other related variables, such as labels or ratings, much interest has been placed on supervised topic models. However, the nature of most annotation tasks, prone to ambiguity and noise, often with high volumes of documents, deem learning under a single-annotator assumption unrealistic or unpractical for most real-world applications. In this paper, we propose a supervised topic model that accounts for the heterogeneity and biases among different annotators that are encountered in practice when learning from crowds. We develop an efficient stochastic variational inference algorithm that is able to scale to very large datasets, and we empirically demonstrate the advantages of the proposed model over state of the art approaches.
A Novel Algorithm for Finding Maximum Common Ordered Subgraph

In this paper, we study the following problem: given are adjacency matrices of two simple graphs. Find two principal matrices (though they are vectors) having the maximum inner product. When used for computing the similarity of two protein structures this problem is called contact map overlap and for the later, we give an exact B&B algorithm with bounds computed by solving Lagrangian relaxation of the problem. The efficiency of the approach is demonstrated on a popular benchmark set of instances together with a comparison with the best existing algorithm.