Miracle-dz/UniFAR-FTUs huggingface dataset:
Graph convolutional networks for region of interest classification in breast histopathology

Deep learning-based approaches have shown highly successful performance in the categorization of digitized biopsy samples. The commonly used setting in these approaches is to employ convolutional neural networks for classiﬁcation of data sets consisting of images all having the same size. However, the clinical practice in breast histopathology necessitates multi-class categorization of regions of interest (ROI) in biopsy samples where these regions can have arbitrary shapes and sizes. The typical solution to this problem is to aggregate the classiﬁcation results of ﬁxed-sized patches cropped from these images to obtain image-level classiﬁcation scores. Another limitation of these approaches is the independent processing of individual patches where the rich contextual information in the complex tissue structures has not yet been suﬃciently exploited. We propose a generic methodology to incorporate local inter-patch context through a graph convolution network (GCN) that admits a graph-based ROI representation. The proposed GCN model aims to propagate information over neighboring patches in a progressive manner towards classifying the whole ROI into a diagnostic class. The experiments using a challenging data set for a 4-class ROI-level classiﬁcation task and comparisons with several baseline approaches show that the proposed model that incorporates the spatial context by using graph convolutional layers performs better than commonly used fusion rules.
How accessibility guidelines are used in Spanish World Heritage websites: an exploratory study

PurposeThis paper presents an exploratory study on the accessibility of Spanish World Heritage website home pages in the Spanish language.Design/methodology/approachThe study sample comprised 78 home pages from the institutional websites of the 47 cultural, natural and mixed assets considered as World Cultural Heritage by The United Nations Educational, Scientific and Cultural Organization (Unesco). These home pages have been analysed using online accessibility validator tools, following the Web Content Accessibility Guidelines (WCAG) 2.0 recommendation for the different levels of priority. The compiled data were employed in a quantitative study on adherence to WCAG guidelines. Furthermore, the types of errors made using the perspective of accessibility and usability were identified, and the application rate was calculated for these accessibility guidelines according to the type of entity managed by the websites and pages.FindingsThe results show that more than 25 percent of the cases analysed had ten accessibility errors or fewer. Moreover, it was only necessary to correct one or two types of errors in close to 40 percent of them. The paper draws the conclusion that, despite technological and legislative advances that make public entity websites accessible, there is still much to do before complete web accessibility and usability at AA and AAA level can be achieved.Practical implicationsIdentifying accessibility problems on institutional websites constitutes the first step towards creating web content that is easy to access and manage for users with disabilities. In this regard, this study contributes to improving web content according to objective guidelines such as those encouraged by the WCAG 2.0. Originality/valueThis article provides information on how accessibility and usability guidelines are implemented by institutional websites for Cultural Heritage deemed especially important. This is an issue with significant implications for users and for which, however, there is a lack of prior studies. As a result, the value and originality of this paper can be considered evident.
Elderly victims dying of unnatural causes: a retrospective descriptive study from Ragama, Sri lanka

Even though life expectancy among the elderly has been improving health hazards due to unnatural causes are a significant medical and social issue among this group. The objective was to determine the causes and epidemiological aspects of unnatural deaths in the elderly. A retrospective descriptive study conducted for a period of 3 years, at a tertiary care hospital of Sri Lanka where information was collected from hospital records and post mortem reports of persons above 60 years of age, who died due to unnatural causes revealed that a majority of deaths were due to road traffic accidents of pedestrians.
Seroprevalence of Dengue in Antenatal and Paediatric Patients - In a Tertiary Care Hospital, Puducherry

It exhibits a wide spectrum of clinical manifestations ranging from asymptomatic to severe clinical manifestation such as dengue shock syndrome (Srinivasa Rao Mutheneni et al., 2017). Dengue in India was reported in Chennai in 1780 and the first outbreak occurred in Calcutta (1963) (Ramakrishnan et al., 1964). Other regions where dengue is reported are Orissa, Andhra Pradesh, Mizoram, New Delhi, Maharastra, Karnataka, Tamilnadu, Pondicherry and Kerala. Since 2001, total number of dengue cases has been increasing. In 2003 India faced outbreak where northern parts of India were affected and all the 4 serotypes were prevalent during the outbreak (Gupta et al., 2006). Recently outbreak of dengue has occurred in the year 2017. Many studies show the prevalence of Dengue in general population who visit the hospital with history of fever. International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 7 Number 06 (2018) Journal homepage: http://www.ijcmas. com
Study of the Losses in Fluid Machinery with the Help of Entropy

In the current design process of turbomachinery the use of CFD methods is state of the art. With CFD calculations we are able to predict the performance characteristics of the machines. In most of the cases the machines are rated based on their performance alone. A detailed evaluation of the losses involved often is not conducted, mainly because there is no established method to analyze the location and mechanisms of loss production. This leads to the fact that the loss mechanisms for some turbo machines are not known in detail, although they are very important to completely understand the operation principle of the machines and have a huge influence on their performance. If the location and quantity of losses were known, it would be possible to perform a selective optimization of the machine. The question is just how to calculate and localize the losses and evaluate them with CFD. In his thesis Kock introduces a method, to identify losses in CFD. His method is based on the entropy production rates in turbulent flow fields. In this paper the method is applied on hydraulic fluid machinery and two different machine types are discussed in detail. Those are a side channel pump and an inducer. The locations of the losses are detected and the size of losses will be evaluated by applying the method of Kock.
Testing students ability to use derivatives, integrals, and vectors in a purely mathematical context and in a physical context

In this article, we discuss the development and the administration of a multiple-choice test, which we named Test of Calculus and Vectors in Mathematics and Physics (TCV-MP), aimed at comparing students ’ ability to answer questions on derivatives, integrals, and vectors in a purely mathematical context and in the context of physics. The comparison between the two contexts was achieved by using parallel (isomorphic) questions in mathematics and physics. The final version of the test contains 34 items (17 in a purely mathematical context and 17 in the context of physics) involving different representations (graphs, words, numbers, and formal expressions) of the concepts covered by the test. The test was administered in Spring 2018 to 1252 first-year students enrolled in 23 different degree programs of the School of Science and the School of Engineering of the University of Padua. We assessed the validity, reliability, and discriminatory power of the test both as a whole and at the single-item level, obtaining values within the desired ranges. The analysis of students ’ answers to individual items and the comparison between parallel mathematics and physics items provides insights into the factors that affect students ’ ability to use derivatives, integrals, and vectors in the context of introductory physics. We believe that the instrument we have developed can be useful not only for research purposes, but also for instructors and for students. DOI: 10.1103/PhysRevPhysEducRes.16. 010111
Reliable Computation Offloading for Edge-Computing-Enabled Software-Defined IoV

Internet of Vehicles (IoV) has drawn great interest recent years. Various IoV applications have emerged for improving the safety, efficiency, and comfort on the road. Cloud computing constitutes a popular technique for supporting delay-tolerant entertainment applications. However, for advanced latency-sensitive applications (e.g., auto/assisted driving and emergency failure management), cloud computing may result in excessive delay. Edge computing, which extends computing and storage capabilities to the edge of the network, emerges as an attractive technology. Therefore, to support these computationally intensive and latency-sensitive applications in IoVs, in this article, we integrate mobile-edge computing nodes (i.e., mobile vehicles) and fixed edge computing nodes (i.e., fixed road infrastructures) to provide low-latency computing services cooperatively. For better exploiting these heterogeneous edge computing resources, the concept of software-defined networking (SDN) and edge-computing-aided IoV (EC-SDIoV) is conceived. Moreover, in a complex and dynamic IoV environment, the outage of both processing nodes and communication links becomes inevitable, which may have life-threatening consequences. In order to ensure the completion with high reliability of latency-sensitive IoV services, we introduce both partial computation offloading and reliable task allocation with the reprocessing mechanism to EC-SDIoV. Since the optimization problem is nonconvex and NP-hard, a heuristic algorithm, fault-tolerant particle swarm optimization algorithm is designed for maximizing the reliability (FPSO-MR) with latency constraints. Performance evaluation results validate that the proposed scheme is indeed capable of reducing the latency as well as improving the reliability of the EC-SDIoV.
Assessing the Adoption of E-government Using Tam Model: Case of Egypt

Electronic government (e-government) was known as an efficient method for government expertness and proficiency as a vital facilitator for citizen-oriented services. Since their initiation over a decade ago, Egovernment services are recognised as a vehicle for accessing online public services. Both governments and academic researchers understand the difficulty of low-level adoption of e-government services among citizens; a common problem between both developing and developed countries. This paper investigates determinants and factors necessary to enhance adoption of citizens for e-government services in developing countries, with particular focus on Egypt, by extending the Technology Acceptance Model (TAM) using a set of political, social, and design constructs that were developed from different sources of research literature.
Comparison of the Results of a Data Envelopment Analysis Model and Logit Model in Assessing Business Financial Health

This paper focuses on business financial health evaluation with the use of selected mathematical and statistical methods. The issue of financial health assessment and prediction of business failure is a widely discussed topic across various industries in Slovakia and abroad. The aim of this paper was to formulate a data envelopment analysis (DEA) model and to verify the estimation accuracy of this model in comparison with the logit model. The research was carried out on a sample of companies operating in the field of heat supply in Slovakia. For this sample of businesses, we selected appropriate financial indicators as determinants of bankruptcy. The indicators were selected using related empirical studies, a univariate logit model, and a correlation matrix. In this paper, we applied two main models: the BCC DEA model, processed in DEAFrontier software; and the logit model, processed in Statistica software. We compared the estimation accuracy of the constructed models using error type I and error type II. The main conclusion of the paper is that the DEA method is a suitable alternative in assessing the financial health of businesses from the analyzed sample. In contrast to the logit model, the results of this method are independent of any assumptions.
A study of clinicoepidemiological and risk behaviour profile of patients with anogenital warts attending an urban STI clinic of Eastern India

Objective To determine the demographic, epidemiological features, frequency, clinical characteristics of the patients presenting with genital warts in an urban STD clinic setting. Also, observe the relationship with other sexually transmitted infections including HIV and other co-morbidities. Methods An institution-based, observational, cross-sectional clinical study was carried over twelve months (from March 2011 to February 2012). About a hundred accepting consecutive patients clinically diagnosed with genital warts were interviewed regarding the demographic features including age, sex, religion, occupation, educational status, marital status and others. Histopathological specimens stained with hematoxylin and eosin were examined when deemed necessary. Results Out of 93 patients, 71 (76.3%) patients were males and 22 (23.7%) were females. The majority of the patients (66, 71.0%) came from urban areas of Kolkata and its suburbs while the rest (27, 29%) hailed from the rural areas. Modes of sex were genital (84, 90.3%), oral (36, 38.7%), anal (13, 14.0%) and others (like toys, etc., 1, 1.0%). Twenty-seven (29.0%) patients presented with a single wart; 30 (32.3%) had 2-5 warts, 10 (10.75%) patients each had 6-10 and 11-15 warts. Surface changes as secondary infections, bleeding and small necroses were seen in 4 (4.3%) patients. Conclusion Anogenital warts more commonly occurred in males in third decade of life. Most of patients were married, polygamous, smokers and belonged to lower socio-economic class. Morphologically, classical condylomata acuminata was the most common type. Concurrent other sexually transmitted diseases were rare.
Theories and Applications of Enhanced Earthquake Back-projection Imaging

Earthquake source imaging is an efficient tool to reveal the kinematic rupture process of earthquakes. The accuracy and robustness of source imaging is of vital importance to con- strain source properties and help discriminate among potential physical mechanisms. In this work, I develop array-based approach: enhanced back-projection and coherence method to provide better constraints on kinematic source imaging.Slowness correction is proposed to improve the source imaging of complicated rupture in conjugate fault systems. The correction is capable of mitigating 3D structural effects that commonly exist for M8 earthquakes.For deep earthquakes, I introduce 3D back-projection which provides depth resolution of the rupture front. Resolving ruptures in 3D space helps us to understand the rupture process and physical mechanisms of deep earthquakes. Furthermore, coherence model is established to relate earthquake source size with inter-station cross-correlation. This method creates independent measures to validate and constrain the source sizes of deep earthquakes.Aforementioned array-based approaches have been successfully applied to recently oc- curred earthquakes, and I will take this chance to revisit the rupture mechanisms of the events revealed by enhanced source imaging
Usefulness and satisfaction of take-over requests for highly automated driving

This paper summarizes our results from survey research and driving simulator experiments on auditory, vibrotactile, and visual take-over requests in highly automated driving. Our review shows that vibrotactile takeover requests in the driver’s seat yielded relatively high ratings of self-reported usefulness and satisfaction. Auditory take-over requests in the form of beeping sound were regarded as useful but not satisfactory, and it was found that the beep rate corresponds to perceived urgency. Visual-only feedback (LEDs) was regarded by participants as neither useful nor satisfactory. Augmented visual feedback was found to support effective steering and braking actions, and may be a useful compliment to vibrotactile take-over requests. The present findings may be used in the design of take-over requests.
Teaching Software Engineering Topics Through Pedagogical Game Design Patterns: An Empirical Study

Teaching software engineering in its many different forms using traditional teaching methods is difficult. Serious games can help overcome these challenges because they allow real situations to be simulated. However, the development of serious games is not easy and, although there are good practices for relating game design patterns to teaching techniques, there is no methodology to support its use in a specific context such as software engineering. This article presents a case study to validate a methodology that links the Learning and Teaching Functions (LTF) to the Game Design Patterns (PIB) in the context of Software Engineering Education. A serious game was developed from scratch using this methodology to teach software estimation (a specific topic of software engineering). An experiment was carried out to validate the effectiveness of the game by comparing the results of two different groups of students. The results indicate that the methodology can help to develop effective educational games on specific learning topics.
Paraneoplastic immune-mediated neutropenia in a dog following thymoma excision with later development of metastatic thymic carcinoma treated with toceranib phosphate

A thymoma was an incidental finding in a seven-year-old, female neutered, crossbred dog referred for an acute hepatopathy. Excision of the thymoma was performed via median sternotomy, and 11 weeks later the dog presented with severe neutropenia. The bone marrow was hypercellular, and paraneoplastic immune-mediated neutropenia was diagnosed following exclusion of other causes. The neutrophil count increased to normal within seven days of treatment with prednisolone, which was subsequently tapered. A caudal mediastinal mass was documented 17 months following initial thymoma excision, and pleural and mediastinal metastases were evident on CT. Cytology was consistent with carcinoma. Following the prescription of toceranib phosphate, there was stable disease on CT at eight weeks and six months. At 12 months there was severe locoregional progression and the dog died nine days thereafter. Postmortem examination showed diffuse metastatic carcinoma of the caudal mediastinum, parietal pleura and diaphragm, and histopathology/immunohistochemistry was most consistent with thymic carcinoma.
Falls among wheelchair and scooter users with multiple sclerosis—A review

1. Department of Kinesiology and Community Health, College of Applied Health Sciences, University of Illinois at Urbana-Champaign, Champaign, IL, US; 2. Department of Occupational Therapy, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, IL, US; 3. Center on Health, Aging and Disability, College of Applied Health Sciences, University of Illinois at Urbana-Champaign, Champaign, IL, US
Oral hygiene and maintenance habits among fixed partial denture wearers

Aim: This study aimed to investigate oral hygiene and maintenance habits of fixed partial denture (FPD) wearers. Materials and Methods: A total of 200 patients (93 males, and 107 females) answered a questionnaire regarding their oral hygiene habits and awareness of specific measures to maintain proper hygiene underneath their FPDs. Results: The most patients (n = 166, 83%) did not use any special aid to maintain hygiene underneath pontics. The majority of them (n = 178, 89%) reported that their dentist did not inform them about these aids. In addition, 150 patients (75%) reported that they were not advised by the dentist to book recall visits. Conclusion: There is a lack of awareness among FPD wearers regarding the specific measures needed to maintain proper hygiene underneath FPDs. Dentists should be obligated to educate their patients regarding the maintenance of proper oral hygiene under their prostheses.
A Secure Key-Aggregate Keyword Retrieval Scheme Over Encrypted Data in Cloud Computing

Key-aggregate keyword retrieval primitive enables a cloud server on behalf of delegated users to securely perform a keyword search over the data encrypted with various public keys. However, existing key-aggregate searchable encryption schemes are insecure against keyword guessing attacks, which result in the privacy leakage of keyword ciphertext and trapdoor. In this paper, we for the ﬁrst time formulate a secure and efﬁcient key-aggregate searchable encryption for cloud-assisted IoT applications, which not only enables a data owner to securely share the selected documents to multiple users, but also supports data users in delegating the capability of keyword search to a cloud server for searching the desired documents without leaking any privacy of keyword ciphertext and trapdoor. Then, the security of the proposed scheme is formally deﬁned and proven to be secure against the indistinguishable selective-ﬁle chosen keyword attacks. The ﬂexibility and practicability of the formulated scheme is also demonstrated by theoretical evaluations and experimental simulations.
Perioperative tissue perfusion and monitoring in overweight and obesity without type 2 diabetes

Background: Preservation of myocardial perfusion during surgery is particularly important in patients with increased risk for perioperative complications, such as diabetes. Volatile anesthetics, like sevoflurane, have cardiodepressive effects and may aggravate cardiovascular complications. We investigated the effect of sevoflurane on myocardial perfusion and function in prediabetic rats. Methods: Rats were fed a western diet (WD; n=18) or control diet (CD; n=18) for 8 weeks and underwent (contrast) echocardiography to determine myocardial perfusion and function during baseline and sevoflurane exposure. Myocardial perfusion was estimated based on the product of microvascular filling velocity and blood volume. Results: WD-feeding resulted in a prediabetic phenotype characterized by obesity, hyperinsulinemia, hyperlipidemia, glucose intolerance, and hyperglycemia. At baseline, WDfeeding impaired myocardial perfusion and systolic function compared to CD-feeding. Exposure of healthy rats to sevoflurane increased the microvascular filling velocity without altering myocardial perfusion but impaired systolic function. In prediabetic rats, sevoflurane did not affect myocardial perfusion, however, it further impaired systolic function. Conclusions: Diet-induced prediabetes is associated with impaired myocardial perfusion and function in rats. While sevoflurane further impaired systolic function, it did not affect myocardial perfusion in prediabetic rats. Our findings suggest that sevoflurane anesthesia leads to uncoupling of myocardial perfusion and function, irrespective of the metabolic state.