bluuebunny/crossref_metadata_2025 huggingface dataset:
Adaptive Multi-Scale Feature Fusion Based Residual U-net for Fracture Segmentation in Coal Rock Images
Authors: Lu Fengli , Fu Chengcai , Zhang Guoying , Shi Jie
Published: February 2020

Accurate segmentation of fractures in coal rock CT images is important for safe production and the development of coalbed methane.However,to make segment coal rock fractures accurate,the challenges as the following:1)The coal rock CT images have the characteristics which are high background noise, sparse target, weak boundary information, uneven gray level, low contrast etc.; 2)There is no a public dataset of coal rock CT images;3)Limited coal rock CT images samples.In the paper,we proposed adaptive multi-scale feature fusion based residual U-uet(AMSFFRU-uet) for fracture segmentation in coal rock CT images to address the issues.In order to reduce the loss of tiny and weak fractures, dilated residual blocks (DResBlock) are embedded into the U-uet structure, which expand the receptive field and extract fracture information atdifferent scales.Furthermore, for reducing the loss of spatial information during the down-sampling process, feature maps of different sizes in the encoding branch are concatenated by adaptive multi-scale featurefusion module,which is as the input of the first up-sampling in the decoding branch.And we applieda set of comprehensive data augmentation operations to increase the diversity of training samples. Our network,U-net and ResU-net are tested on our dataset of coal rock CT images with 5 different textures.The experimental results show that compared with U-net and ResU-net, our proposed approach improve the average Dice coefficient by 5.1% and 2.9% and the average accuracy by 4.5% and 2%,respectively.Therefore,AMSFFRU-net can achieve better segmentation of coal rock fractures,and has stronger generalization ability and robustness.
Prevalence and factors associated with intestinal parasites among food handlers in Medebay Zana District, North West Tigray, Northern Ethiopia.
Authors: Regassa Kebrom , Tedla Kiros , Bugssa Gessessew , Gebrekirstos Gebretsadkan , Gebreyesus Hailay , Shfare Mebrahtu
Published: February 2020

Introduction Several epidemiological studies suggest that the prevalence of intestinal parasites is high, especially in developing countries, and are amongst the major public healthchallenges facing Sub-Saharan Africa.The aim of this study was to determine the prevalence of intestinal parasites and its associated factors among food handlers in Woreda Medebay Zana, Tigray, Ethiopia. Methods A cross-sectional study was conducted among 401 food handler individuals selected by systematic random sampling.Binary and multivariable logistic regression was used to determine the possible association between the independent variable and outcome variables. Statistical significance was declared at p- value <0.05 with 95% confidence interval. Result The prevalence of intestinal parasites was 33.2% within this sample.The dominant parasite were Entamoeba coli 50(37.4%), followed by Entamoeba histolytica/dispar 24(18%), Entamoeba hartmanni 18(13.5), Giardia lamblia 17(12.8%), Schistosoma mansoni 8(6%), Hymenolepis nana 7(5.3%), Enterviousvermicularies 6(4.5%) and Taenia species 3(2.5%). Conclusion This study revealed a high prevalence of intestinal parasites among food handlers for a range of intestinal parasites. The significant predictors weresource of water, washing hands before food preparation, washing hands with soap and water after visiting toilet, shower installation, washing body regularly, and eating raw vegetables.
Simulation of Tennis Serve Behavior Based on Video Image Processing Technology
Authors: Li Xiao-zhong , Huang Ping-lin
Published: February 2020

Video-based human motion analysis is an important research direction in the field of computer vision. It detects moving objects from video sequences, extracts key parts of the human body, and obtains useful information for human movements. Further analysis and identification. In this paper, the joints of the teeing arm are first color-coded. The tennis teeing video is collected by a high-speed camera. The coordinates of the tacking points in each frame are used instead of the knuckles to study the trajectory of the teeing arm. In the process of video processing, after constructing a dictionary for a series of noise maps, the sparse representation idea was used to reconstruct an interference-free service diagram, and a mixture of Gaussian background modeling was used to extract the foreground of the motion. After obtaining the motion foreground, the marker points are extracted through the color features, and binarization operations are performed on the marker points. Next, the outline of the marker points is searched, the outline is surrounded by the minimum circle, and the returned circle center coordinates are used as the joint point coordinates. Taking the trajectory of the shoulder marking point as a research object, a tennis serving model based on an improved support vector machine was established.
TV2++: A Novel Spatial-Temporal Total Variation for Super Resolution with Exponential-type Norm
Authors: Deng Lizhen , Zhou Zhetao , Xu Guoxia , Zhu Hu , Bao Bing-Kun
Published: February 2020

Recently, many super-resolution algorithms have been proposed to recover high resolution images to improve visualization and help better analyze images. Among them, total variation regularization (TV) methods have been proven to have a good effect in retaining image edge information. However, these TV methods do not consider the temporal correlation between images. Our algorithm designs a new TV regularization (TV2++) to take advantage of the time dimension information of the images, further improving the utilization of useful information in the images. In addition, the union of global low rank regularization and TV regularization further enhances the image super resolution recovery. And we extend the exponential-type penalty (ETP) function on singular values of a matrix to enhance low-rank matrix recovery. A novel image super-resolution algorithm based on the ETP norm and TV2++ regularization is proposed. And the alternating direction method of multipliers (ADMM) is applied to solve the optimization problems effectively. Numerous experimental results prove that the proposed algorithm is superior to other algorithms.
Vaginal progesterone supplementation in the management of preterm labor: A randomized controlled trial
Authors: Sirisangwon Ratanawadee , Phupong Vorapong
Published: February 2020

BackgroundPreterm labor is a common obstetric complication and can lead to preterm delivery. Preterm birth or preterm delivery is the leading cause of neonatal morbidity and mortality, especially when preterm birth occurs at a gestational age less than 34 weeks. The primary objective in this study was to evaluate the effects of vaginal progesterone supplementation for the prolongation of the latency period in preterm labor. The secondary objectives were to evaluate gestational age at delivery, rates of preterm birth less than 34 and 37 weeks, obstetric outcomes, maternal compliance with medication use, and side effects.MethodsA randomized controlled trial was performed. Ninety women with preterm labor occurring at 24 to 34 weeks were either randomized to a vaginal progesterone group (44 women) receiving tocolytic and antenatal corticosteroids treatment combined with vaginal micronized progesterone (400 mg everyday) or to the no-progesterone group (46 women) receiving tocolytic and antenatal corticosteroids treatment only.ResultsLatency periods were more prolonged in the vaginal progesterone group than in the no-progesterone group (32.8 ± 18.7 vs. 25.8 ± 22.7 days, p = 0.045). Gestational age at delivery in the vaginal progesterone group was also higher than in the no-progesterone group (36.5 ± 2.9 vs. 34.9 ± 3.7 weeks, p = 0.022). There were significant reduction rates of preterm birth less than 34 weeks (13.6% vs. 39.1%, p = 0.012), low birth weight (29.5% vs. 50%, p = 0.048), neonatal respiratory distress syndrome (13.6% vs. 37%, p=0.021), and neonatal intensive care unit admission (6.8% vs. 28.3%, p = 0.017).ConclusionCombined treatment with vaginal progesterone 400 mg could prolong the latency period in preterm labor when compared with no progesterone. Further, this approach could decrease the rates of preterm birth less than 34 weeks, low birth weight, and neonatal respiratory distress syndrome.
Laboratory colonization by Dirofilaria immitis alters the microbiome of female Aedes aegypti mosquitoes
Authors: Adegoke Abdulsalam , Neff Erik , Geary Amie , Husser Montana Ciara , Wilson Kevin , Norris Shawn Michael , Dharmarajan Guha , Karim Shahid
Published: February 2020

Background The ability of blood feeding arthropods to successfully acquire and transmit pathogens of medical and veterinary importance has been shown to be interfered or enhanced by the arthropod’s native microbiome. Mosquitoes transmit bacteria, viruses, protozoan and filarial nematodes, majority of which contributes to the 17% of infectious disease cases worldwide. Dirofilaria immitis , a mosquito transmitted filarial nematodes of dogs and cats, is vectored by several mosquito species including Aedes aegypti . Methods In this study, we investigated the impact of D. immitis colonization on the microbiome of laboratory reared female A. aegypti . Metagenomic analysis of the V3-V4 variable region of the microbial 16SRNA was used for identification of the microbial differences down to species level. Results We generated a total of 1068 OTUs representing 16 phyla, 181 genera and 271 bacterial species. Overall, in order of abundance, Proteobacteria, Bacteroidetes, Actinobacteria and Firmicutes were the most represented phylum with D. immitis infected mosquitoes having more of Proteobacteria (71%) than uninfected mosquitoes (56.9%). An interesting finding in this study is the detection of Klebsiella oxytoca in relatively similar abundance in infected and uninfected mosquitoes. It has been previously shown to indirectly compete for nutrients with fungi on the domestic housefly eggs and larva. While not statistically significant, D. immitis infection alters bacterial diversity by reducing the bacterial species richness and abundance. Conclusions In conclusion, this is the first study to the best of our knowledge to understand the impact of a filarial infection on the microbiome of its mosquito vector. While the microbiome composition of A. aegypti mosquito have been previously reported, our study shows that in an effort to establish itself, a filarial nematode modifies and alters the overall microbial diversity within its mosquito host.
In silico and In vitro Investigation of a Likely Pathway for Anti-Cancerous Effect of Thrombocidin-1 as a Novel Anticancer Peptide
Authors: Tanhaian Abbas , Mohammadi Elyas , Vakili-Ghartavol Roghayyeh , Saberi Mohammad Reza , Mirzayi Mehdi , Jaafari Mahmoud Reza
Published: February 2020

Background:

Antimicrobial and antifungal activities of Thrombocidin-1 (TC-1) is shown previously, however, the anti-cancerous feature of this peptide is still uncovered.

Objective:

The objective is to evaluate anti-cancerous feature of recombinant TC-1.

Methods:

In this study, based on the significant similarity of rTC-1 and IL-8 in case of coding sequence, tertiary structure, and also docking and molecular dynamic simulation (MD) results with CXCR1, a receptor which has positive correlation with different cancers, a likely pathway for anticancerous effect of rTC-1 was proposed. In addition, the coding sequence of TC-1+6xhistidine (rTC-1) was inserted into the pET22b(+) vector and cloned and expressed by E. coli BL21 and finally purified through nickel affinity column. Afterward, the retrieved rTC-1 was used in MTT assay against mouse colon adenocarcinoma, hepatocellular carcinoma, chondrosarcoma, mouse melanoma, and breast adenocarcinoma cell lines to investigate its probable anticancer application.

Results:

Docking and MD simulation results showed that rTC-1 and IL-8 share almost the same residues in the interaction with CXCR1 receptor. Besides, the stability of the rTC-1_CXCR11-38 complex was shown during 100ns MD simulation. In addition, the successful expression and purification of rTC-1 depict an 8kD peptide. The IC50 results of MTT assay revealed that rTC-1 has cytotoxic effect on C26-A and SW1353 cancerous cell lines.

Conclusion:

Therefore, apart from probable anti-cancerous effect of rTC-1 on C26-A and SW1353 cell lines, this peptide may be able to mimic the anti-cancerous pathway of IL-8.
Chemical Composition and Combinatory Antifungal Activities of Ammoides verticillata, Allium sativum and Curcuma longa Essential Oils Against Four Fungi Responsible for Tomato Diseases
Authors: Senouci Hanane , Benyelles Nassira G. , Dib Mohammed E.A. , Costa Jean , Muselli Alain
Published: February 2020

Background:

Tomato is considered a model plant in genetics and is one of the most
economically important crops of all those that exist in the world. Several species of fungi are
reported on tomato fruit, causing damage both during cultivation and after harvest. Some of the
appropriate actions that could be initiated to resolve the problem are to develop and search for new
antimicrobial substances isolated from the bioactive natural products, such as essential oils.

Aim and Objective:

The aim of this work was to determine the chemical composition of essential
oils of Ammoides verticillata, Allium sativum and Curcuma longa, to evaluate their in-vitro antifungal
activities and in-vivo antifungal effect of essential oils to prevent the diseases caused by tomato.

Materials and Methods:

The essential oils obtained from aerial parts of plants were analyzed by
GC/MS and tested for their antifungal activities against Penicillium expansum, Fusarium solani,
Rhizopus stolonifer and Alternaria alternata using the radial growth technique method. The
effectiveness in-vivo of the association between Allium sativum and Curcuma longa essential oils
was also investigated on tomatoes inoculated by fungi.

Results:

The essential oil from A. verticilata was mainly composed of phenolic compounds
(54.4%), the A. sativum oil was mainly composed of sulfur compounds (91.5%) and C. longa oil
was dominated by oxygenated monoterpenes (82.0%). The obtained results in-vitro antifungal
revealed that individual essential oils of A. verticillata and A. sativum were more active than the
essential oil of C. longa against all screened microorganisms. An important antifungal effect of A.
sativum and C. longa essential oils blend was obtained against P. expansum (100%), F. solani
(95.2%), R. stolonifer (95.1%) and A. alternata (48.5%). Furthermore, A. sativum and C. longa
essential oils blends have demonstrated promising in-vivo antifungal activity to control infection of
tomato against P. expansum and R. stolonifer.

Conclusion:

A. sativum and C. longa essential oil blends can be used as a natural food preservative
and alternative to chemical fungicides to protect stored tomato against many phytopathogens.
Светодиодные структуры на основе ZnO-пленок, полученных методом высокочастотного магнетронного распыления, для УФ области спектра
Authors: Мездрогина М.М. , Виноградов А.Я. , Кожанова Ю.В. , Борсук Е.А.
Published: February 2020

Thce results of investigations the effects various defects on the photo and electro- luminescence spectra ( intensity, value of longc wave of luminesce) structures n-ZnO/p-GaN were represented.
.
Анализ оптических свойств наночастиц серебра
Authors: Расмагин С.И. , Апресян Л.А.
Published: February 2020

The optical properties of silver nanoparticles obtained by laser ablation and "green" synthesis were investigated. The aim of the work was to obtain silver nanoparticles with desired properties and study absorption spectra to compare the temporal stability of solutions of silver nanoparticles. For the obtained samples with silver nanoparticles, absorption spectra were measured, electron spectroscopy data were obtained, and the properties of silver nanoparticles obtained by different methods were compared.
Survival after Kidney Transplantation during Childhood and Adolescence
Authors: Francis Anna , Johnson David W. , Melk Anette , Foster Bethany J. , Blazek Katrina , Craig Jonathan C. , Wong Germaine
Published: February 2020

Background and objectives

Survival in pediatric kidney transplant recipients has improved over the past five decades, but changes in cause-specific mortality remain uncertain. The aim of this retrospective cohort study was to estimate the associations between transplant era and overall and cause-specific mortality for child and adolescent recipients of kidney transplants.

Design, setting, participants, & measurements

Data were obtained on all children and adolescents (aged <20 years) who received their first kidney transplant from 1970 to 2015 from the Australian and New Zealand Dialysis and Transplant Registry. Mortality rates were compared across eras using Cox regression, adjusted for confounders.

Results

A total of 1810 recipients (median age at transplantation 14 years, 58% male, 52% living donor) were followed for a median of 13.4 years. Of these, 431 (24%) died, 174 (40%) from cardiovascular causes, 74 (17%) from infection, 50 (12%) from cancer, and 133 (31%) from other causes. Survival rates improved over time, with 5-year survival rising from 85% for those first transplanted in 1970–1985 (95% confidence interval [95% CI], 81% to 88%) to 99% in 2005–2015 (95% CI, 98% to 100%). This was primarily because of reductions in deaths from cardiovascular causes (adjusted hazard ratio [aHR], 0.25; 95% CI, 0.08 to 0.68) and infections (aHR, 0.16; 95% CI, 0.04 to 0.70; both for 2005–2015 compared with 1970–1985). Compared with patients transplanted 1970–1985, mortality risk was 72% lower among those transplanted 2005–2015 (aHR, 0.28; 95% CI, 0.18 to 0.69), after adjusting for potential confounders.

Conclusions

Survival after pediatric kidney transplantation has improved considerably over the past four decades, predominantly because of marked reductions in cardiovascular- and infection-related deaths.
Long-Term Outcomes in Patients with Acute Kidney Injury
Authors: Noble Rebecca A. , Lucas Bethany J. , Selby Nicholas M.
Published: February 2020

The long-term sequelae of AKI have received increasing attention so that its associations with a number of adverse outcomes, including higher mortality and development of CKD, are now widely appreciated. These associations take on particular importance when considering the high incidence of AKI, with a lack of proven interventions and uncertainties around optimal care provision meaning that the long-term sequelae of AKI present a major unmet clinical need. In this review, we examine the published data that inform our current understanding of long-term outcomes following AKI and discuss potential knowledge gaps, covering long-term mortality, CKD, progression to ESKD, proteinuria, cardiovascular events, recurrent AKI, and hospital readmission.
Religious Diplomacy in the Settlement of the Afghan Conflict: Opportunities and Limitations
Authors: Krasheninnikova Elena Andreevna
Published: February 2020

The article analyzes the potential of religious diplomacy in the settlement of the Afghan conflict. The Russian and foreign research discourses highlight the importance and examples of using religious channels as a tool of reducing tensions and resolving conflicts. However, the emphasis is mainly done on the Western practice of specialized (mainly Christian) institutions in preventing the escalation of existing conflicts. This article, in turn, is focused on the analysis of the latest, previously not studied examples of foreign policy initiatives of Islamic religious leaders in post-conflict Afghanistan. Current examples of the activity of Afghan theologians in national and international formats in mobilizing international condemnation of the methods of force against the government of the IRA are discussed. Based on the analysis of expert comments and reports of the media, it is concluded that the main task of the Afghan religious diplomacy to attract the support of the official Afghan authorities in Kabul from the Muslim world was only partially reached, since it was not possible to achieve a unanimous condemnation of the Taliban movement activities. However, in assessing the prospects for further use of religious channels to reduce mistrust and international tension, the author concludes that this tool is in demand in establishing a constructive dialogue with the societies of the Islamic world, overcoming the crisis of trust and preparing a favorable environment for future political dialogue. The author argues that the use of the peacekeeping potential of Islam in the settlement of the Afghan conflict has both potential and limitations due to the current international political situation around Afghanistan.
Myths and Reality of “Lone Wolf” Terrorism in the Context of Islamist Extremism
Authors: Yashlavskii Andrei Eduardovich
Published: February 2020

The article analyzes the peculiarities of the terrorism of “lone actors”, acting under the influence of militant Islamist ideology. Although the potential of lone actors does not look so impressive compared to large terrorist groups, “lone wolves” terrorists are not becoming less dangerous. The danger of the phenomenon is due to the particular difficulty of preventing terrorist acts carried out by lone terrorists. At the same time, existing terrorist groups (e.g. ISIS), on the one hand, use the actions of lone terrorists for their propaganda purposes, and, on the other, try to inspire potential like-minded people to act alone. Thus, the actions of lone terrorists are included in the wider context of the extremist movement (“global jihad”). The article concludes that countering this threat is not only necessary, but possible. But this struggle requires both flexibility and responsibility.
Yandex Users’ Needs in Knowledge on Psychology
Authors: Kitova Juliet A. , Aprelikova Natalia R.
Published: February 2020

Modern information technology space provides people with new opportunities for learning about the world, acquiring additional knowledge and satisfying cognitive needs. The paper analyzes the requests and characteristic features of the needs for knowledge on psychology of the Internet users in the Russian Federation. The study was conducted on the basis of the search queries in Yandex. The speciﬁc user requests demonstrate a heterogeneous level of interest in various branches of psychology, which allows highlighting the structural and substantial features of the respondents’ needs in psychology knowledge and the forms of obtaining the kind of knowledge they prefer. In general, the research results showed a high level of interest of the Internet users in knowledge on psychology, demonstrated their high orientation towards the search for useful information on personal development, professional activities and the development of favorable relationships with others. The data obtained indicate the most important areas of knowledge on psychology for a modern person and will be useful in the framework of psychological and educational theory and practice. The article points out that the study of the needs of the population in knowledge on psychology should be an integral part of the psychological community, which is responsible for the psychological well-being of people and the development of the psychological culture of society as a whole.
Synonymic Traps in Selected English Lexical Semantics Terms
Authors: Bednárová-Gibová K.
Published: February 2020

The paper zooms in on terminological and conceptual scrutiny of selected eight English lexical semantics terms with the aim of pointing out their terminological synonymy, which is often misrecognized by English linguistics undergraduates. Does a ‘loose synonym’ denote in lexical semantics the same thing as a ‘partial synonym’ or ‘cognitive synonym’? Is the cognitive content of the term ‘false friend’ identical with that of a ‘pseudosynonym’ or ‘paronym’? What aspects of the semantic continuum are shared and non-shared by the selected terms? These questions are at the core of this contribution which can serve didactic purposes of English linguistics teaching. The desk research findings are part of semantic and lexicographic studies and aspire to forewarn English linguistics undergraduates of conceptual misinterpretations in common lexical semantics terms. The paper operates from the perspective of cultural linguistics across the Anglophone semantic continuum. It is based on a tailored Sharifian’s premise [2015] that the metalanguage of English lexical semantics is a repository of cultural conceptualizations that leave traces in its current terminological practice. The study suggests that some English lexical semantics terms offer a considerable space for their synonymic treatment, however, to the detriment of their correct conceptual decoding. The credit of the paper lies in raising undergraduates’ awareness of metalinguistic terminology but also in increasing their conceptual fluency in the selected terms.
Modeling of a Generalized Speech Portrait of a Blogger (as Exemplified in the German Military Blogosphere)
Authors: Shliakhovoi Dmitrii A.
Published: February 2020

The study investigates the modeling of a generalized speech portrait of a blog-discourse subject in the speech space of the German military blogosphere. The relevance of the work lies in the development of a methodology for modeling a speech portrait of a virtual linguistic personality, behind the mask of which is a real person, actively participating in the life of his Internet community, united by professional activities and nationality. In this work, the author uses examples from the blog discourse of the German military blogosphere, however, the method of constructing a generalized speech portrait of an online personality, based on the works of Professor Boris Boyko, we apply to the description of any linguistic personality in the communicative space of the global network. The purpose of this study is to highlight the main features for constructing a generalized speech portrait of a German military blogger as a subject of online communication. We were able to identify typical features of the speech of a German military blogger and his virtual linguistic personality, which include units of military vocabulary and terminology, jargon, professionalisms, abbreviations, stable units of verbal communication of military personnel, specific hashtags and non-verbal signs that carry concepts of duty, militancy, patriotism, mourning, etc., associated with the values of military personnel. As a result of the study, we are approaching the speech portrayal of smaller groups within the social group of German military bloggers, for example, creating a speech portrait of a military medic, paratrooper or tanky. The results of our research are of particular interest to military translators, specialists engaged in the study of the theory and practice of Internet communication, blog-discourse, social group dialectology. Knowing the specifics of the speech manifestations of certain social-group communities will allow the recognition of separate subject of online communication by speech characteristics.
Subject Variety of the Belgian Paroemias (on Lexicographical Material)
Authors: Syomina Polina S.
Published: February 2020

This article focuses on the main topics presented in the Belgian paroemias. In the paper, the paroemia is understood as a generic concept in relation to proverbs, sayings and signs. The author’s file of the Belgian French paroemies, taken by a continuous sampling method from the dictionary of proverbs and sayings of the Belgian francophony, is served as the material for the study. It is shown, how paroemias reflect the national character and features of the worldview of certain people. The relevance of the study is due to the necessity of the Belgians paroemiological world view description, because until now the thematic palette and description of the Belgian national character have been the subject of detailed study in neither Russian, nor Belgian linguistics.
O papel da Biblioteca Universitária como espaço de afiliação estudantil e o Bibliotecário como Educador e Agente Inclusivo
Authors: Oliveira Antonio Jose Barbosa de , Cranchi Daniela Carvalho
Published: February 2020

O artigo reflete sobre o uso do espaço e dos serviços oferecidos pelas bibliotecas universitárias no processo de afiliação de estudantes, sobretudo se considerarmos as novas realidades advindas do REUNI e da política de Ações Afirmativas. Nesse sentido, tem uma abordagem teórica interdisciplinar, ressaltando que a biblioteca universitária pode e deve ser um ambiente facilitador da formação acadêmica em seus aspectos científico, técnico e humanista. Destaca o papel da biblioteca na gestão universitária e a importância da participação ativa do profissional bibliotecário-educador no processo de autonomia intelectual do estudante universitário.
Webometria e os periódicos científicos eletrônicos
Authors: Shintaku Milton
Published: February 2020

As métricas para avaliar periódicos científicos têm sido utilizadas por várias disciplinas, não somente na biblioteconomia ou ciência da informação, visto que os periódicos são canal de comunicação utilizado por todas as disciplinas para disseminar os resultados de pesquisa. Entretanto, não há um consenso de qual a melhor métrica para sua avaliação, visto as diferenças disciplinares, evolução tecnológica e mudanças nos processos de publicação. Assim, o presente estudo tem por objetivo revisar os conceitos e aplicações da webometria, no âmbito dos periódicos científicos. Com isso, contribuir com a discussão atual sobre indicadores. O estudo revela que os inlinks de uma revista eletrônica online são citações em sua grande parte, alinhando a bibliometria, mas podem também ser indicação de artigos em redes sociais, aproximando-se da altimetria. Entretanto, estudos baseados somente nos links não fornecem a acurácia necessária às métricas, de forma que estudos mais profundos, de caráter qualitativo, são requeridos para o desenvolvimento de melhores indicadores, visto os problemas envolvendo os links.
Direito à informação e à participação: uma avaliação das ferramentas dispostas nos portais de governo estaduais
Authors: Santos Paloma Maria , Rover Aires José
Published: February 2020

Os movimentos sociais que recentemente tomaram as ruas do Brasil demonstram que os cidadãos estão cada vez mais interessados e preocupados com aquilo que ocorre no domínio público e estão dispostos a se articular e a lutar pela implementação de melhorias no país. Todavia, a falta de canais que deem voz à sociedade é um fato. Pensando nisso, o presente artigo busca investigar se os portais do poder executivo estadual dispõem ferramentas que viabilizam a participação dos cidadãos nos debates e nas decisões governamentais. Tal análise se deu por meio da utilização do instrumento de pesquisa desenvolvido por Santos (2014), o qual foi validado teórica e empiricamente. A partir dos dados coletados foi possível perceber que os portais pouco utilizam suas potencialidades para dispor aos cidadãos ferramentas em prol do avanço na construção e no aperfeiçoamento da democracia e revela-se, ainda, que os portais dos estados com maiores IDHs são os que dispõem o maior número de ferramentas para o cidadão.
Avaliação de desempenho em bibliotecas: revisão de literatura e apresentação de indicadores
Authors: Paula Marciléia Aparecida de , Vergueiro Waldomiro de Castro Santos
Published: February 2020

Considerando a importância de que a qualidade dos processos praticados em uma instituição seja mensurada e avaliada, busca revisar a literatura sobre os temas Qualidade, Gestão da Qualidade, Avaliação em Serviços de Informação e Indicadores de Desempenho, relacionando-os com o contexto das bibliotecas. Além disso, considerando, especificamente, os processos de desenvolvimento de coleções (mais relacionados à avaliação do uso do acervo) e de processamento técnico, apresenta a metodologia de aplicação de nove indicadores de desempenho. A metodologia empregada para a seleção dos indicadores foi a análise da terceira edição da norma BS ISO 11620 Information and documentation – Library performance indicators, publicada em 2014, e da segunda edição das Diretrizes da IFLA intituladas Measuring quality: performance measurement in libraries, publicadas em 2007. Dentre os indicadores selecionados estão cinco para o desenvolvimento de coleções (Disponibilidade de Títulos Solicitados; Disponibilidade Imediata; Porcentagem de Títulos Solicitados na Coleção; Taxa de Uso da Coleção e Porcentagem do Acervo não Usado) e quatro para o processamento técnico (Porcentagem das Publicações Acadêmicas da Instituição no Repositório Institucional; Média de Tempo de Processamento dos Documentos; Produtividade da Equipe de Processamento e Custo por Título Catalogado). A aplicação de indicadores de desempenho é de suma importância para as instituições que querem buscar dados e informações que as auxiliem na avaliação e na tomada de decisão quanto à possíveis melhorias nos processos de trabalho.
A mimese mediada como estratégia de midiatização da psicanálise no programa Terra Dois da TV Cultura-SP
Authors: Do Carmo Hebe Rios , Zanotti Carlos Alberto
Published: February 2020

Este trabalho pretende demonstrar a estratégia de midiatização da psicanálise desenvolvida no programa Terra Dois da TV Cultura - SP a partir da convergência entre gêneros televisivos, identificada com o conceito de mimese

mediada. Foi aplicado o método de análise pragmática da narrativa, baseado em estudos sobre comunicação narrativa realizados por Motta (2013) e França (2004). Vozes narrativas dos campos da mediação e da representação compõem o formato criado para midiatizar a psicanálise na emissora voltada para programas de cunhos educativo, cultural e científico. Conclui-se que a mimese mediada apresenta características diferentes em cada um dos três blocos de Sinfonia sem fim, primeiro episódio da primeira temporada do seriado. O modelo inaugural do formato de Terra Dois fomenta ainda a perspectiva de diversificação de formatos em televisão para a veiculação de programas de cunhos científico, educativo e cultural.
Ideal analogues of some variants of the Hurewicz property
Authors: Tyagi Brij , Singh Sumit , Bhardwaj Manoj
Published: February 2020

In this paper, we continue the study on the ideal analogues of several
variations of the Hurewicz property introduced by Das et al. [4, 6, 7] for
example, the I-Hurewicz (IH), the star I-Hurewicz (SIH), the weakly
I-Hurewicz (WIH) and the weakly star-I-Hurewicz (WSIH). It is shown that
several implications in the relationship diagram of their concepts are
reversible under certain conditions, for instance; (1) If a paracompact
Hausdorff space has the WSIHproperty, then it has theWIHproperty. (2) If the
complement of dense set has the IHproperty, then theWIHproperty implies the
IHproperty and (3) If the complement of dense set has the SIH property, then
the WSIH property implies the SIH property. In addition, we introduce the
ideal analogues of some new variations of the Hurewicz property called the
mildly I-Hurewicz and the star K-I-Hurewicz properties and explore their
relationships with other variants of the I-Hurewicz property. We also study
the preservation properties under certain mappings.
Positive strongly decreasing solutions of Emden-Fowler type second-order difference equations with regularly varying coefficients
Authors: Kapesic Aleksandra , Manojlovic Jelena
Published: February 2020

Positive decreasing solutions of the nonlinear difference equation
?(pn|?xn|?-1?xn)=qn|xn+1|?-1xn+1, n ? 1, ? > ? > 0, are studied under
the assumption that p; q are regularly varying sequences. Necessary and
sufficient conditions are established for the existence of regularly varying
strongly decreasing solutions and it is shown that the asymptotic behavior
of all such solutions is governed by a unique formula.
Two scale defect measure and linear equations with oscillating coefficients
Authors: Aleksic Jelena , Pilipovic Stevan
Published: February 2020

Microlocal measure ? is associated to a two-scale convergent sequence un over
Rd with the limit u ? L2(Rd x Td), Td is a torus, to analyze possible strong
limit. ? is an operator valued measure absolutely continuous with respect to
the product of scalar microlocal defect measure and a measure on the
d-dimensional torus. The result is applied to the first order linear PDE
with the oscillating coefficients.
Cospectrality graphs of Smith graphs
Authors: Cvetkovic Dragos , Todorcevic Vesna
Published: February 2020

Graphs whose spectrum belongs to the interval [-2,2] are called Smith
graphs. The structure of a Smith graph with a given spectrum depends on a
system of Diophantine linear algebraic equations. We have established in [1]
several properties of this system and showed how it can be simplified and
effectively applied. In this way a spectral theory of Smith graphs has been
outlined. In the present paper we introduce cospectrality graphs for Smith
graphs and study their properties through examples and theoretical
consideration. The new notion is used in proving theorems on cospectrality
of Smith graphs. In this way one can avoid the use of the mentioned system
of Diophantine linear algebraic equations.
CR-submanifolds of (LCS)n-manifolds with respect to quarter symmetric non-metric connection
Authors: Pal Tanumoy , Shahid Hasan , Hui Kumar
Published: February 2020

The present paper deals with the study of CR-submanifolds of (LCS)n-manifolds
with respect to quarter symmetric non-metric connection. We investigate
integrability of the distributions and the geometry of foliations. The
totally umbilical CR-submanifolds of said ambient manifolds are also
studied. An example is presented to illustrate the results.
Weighted statistical approximation properties of univariate and bivariate λ-Kantorovich operators
Authors: Özger Faruk
Published: February 2020

In this study, we consider statistical approximation properties of univariate
and bivariate ?-Kantorovich operators. We estimate rate of weighted
A-statistical convergence and prove a Voronovskajatype approximation theorem
by a family of linear operators using the notion of weighted A-statistical
convergence. We give some estimates for differences of ?-Bernstein and
?-Durrmeyer, and ?-Bernstein and ?-Kantorovich operators. We establish a
Voronovskaja-type approximation theorem by weighted A-statistical
convergence for the bivariate case.
On power similarity of complex symmetric operators
Authors: Ko Eungil , Lee Ji , Lee Mee-Jung
Published: February 2020

In this paper, we study properties of operators which are power similar to
complex symmetric operators. In particular, we prove that if T is power
similar to a complex symmetric operator, then T is decomposable modulo a
closed set S ? C if and only if R has the Bishop?s property (?) modulo S.
Using the results, we get some applications of such operators.
Energy and Laplacian energy of unitary addition Cayley graphs
Authors: Palanivel Naveen , Chithra A.V.
Published: February 2020

In this paper, we obtain the eigenvalues and Laplacian eigenvalues of the
unitary addition Cayley graph Gn and its complement. Moreover, we compute
the bounds for energy and Laplacian energy for Gn and its complement. In
addition, we prove that Gn is hyperenergetic if and only if n is odd other
than the prime number and power of 3 or n is even and has at least three
distinct prime factors. It is also shown that the complement of Gn is
hyperenergetic if and only if n has at least two distinct prime factors and
n ? 2p.
Asymmetric truncated toeplitz operators and conjugations
Authors: Câmara Cristina , Kliś-Garlicka Kamila , Ptak Marek
Published: February 2020

Truncated Toeplitz operators in a model space are C-symmetric with respect to
a natural conjugation in that space. We show that this and another
conjugation associated to an orthogonal decomposition possess unique
properties and we study their relations with asymmetric truncated Toeplitz
operators in terms of C-symmetry. New connections with Hankel operators are
established through this approach.
Certain results of hybrid families of special polynomials associated with appell sequences
Authors: Yasmin Ghazala , Muhyi Abdulghani
Published: February 2020

In this article, the Legendre-Gould-Hopper polynomials are combined with
Appell sequences to introduce certain mixed type special polynomials by
using operational method. The generating functions, determinant definitions
and certain other properties of Legendre-Gould-Hopper based Appell
polynomials are derived. Operational rules providing connections between
these formulae and known special polynomials are established. The 2-variable
Hermite Kamp? de F?riet based Bernoulli polynomials are considered as an
member of Legendre-Gould-Hopper based Appell family and certain results for
this member are also obtained.
On q-Opial type inequality for quantum integral
Authors: Alp Necmettin , Bilişik Candan , Sarıkaya Mehmet
Published: February 2020

In this paper, we establish some q-Opial type inequalities and generalization
of q-Opial type inequalities.
The G-connected property and G-topological groups
Authors: Wu Yongxing , Lin Fucai
Published: February 2020

In this paper, we discuss some properties of of G-hull, G-kernel and
G-connectedness, and extend some results of [28]. In particular, we prove
that the G-connectedness are preserved by countable product. Moreover, we
introduce the concept of G-topological group, and prove that a G-topological
group is a G-topology under the assumption of the regular method preserving
the subsequence.
A cone-beam computed tomographic evaluation of alveolar bone dimensional changes and the periodontal limits of mandibular incisor advancement in skeletal Class II patients
Authors: Matsumoto Kensuke , Sherrill-Mix Scott , Boucher Normand , Tanna Nipul
Published: February 2020

Objectives

To evaluate the presence of dehiscences and changes in alveolar bone height and width in the area of the mandibular central incisors pre- and post-orthodontic treatment.

Materials and Methods

In 60 skeletal Class II patients, cone-beam computed tomographic (CBCT) images were obtained and the patients were divided into four groups based on the presence of dehiscences at pre- and post-orthodontic treatment. The alveolar bone height and width were measured on CBCT in cross section along the long axis of the teeth. Lateral cephalograms were analyzed.

Results

The changes in L1-NB and IMPA appeared to be correlated with vertical bone loss and dehiscence. Alveolar bone height appeared to follow a segmented relationship with these two variables, with changes below a threshold (L1-NB = 0.71 mm, IMPA = 3.02°) having relatively minimal or no effect on bone loss but with changes beyond the threshold correlated with extensive bone loss. Similarly, increases in L1-NB or IMPA correlated with decreases in alveolar bone width (L1-NB: −0.25 mm/mm, IMPA: −0.07 mm/°) and increased the probability of developing dehiscences, with an estimated 50% probability of vertical bone loss at a L1-NB change of 2.00 mm or, equivalently, an IMPA change of 8.02° was estimated.

Conclusions

When treating skeletal Class II patients, the limits of incisor proclination/protraction are less than previously thought. To prevent undesired periodontal outcomes, careful three-dimensional diagnosis is advisable. Furthermore, when excessive protrusion and/or proclination is planned, additional treatment modalities, including orthognathic surgery, tooth extraction, and corticotomy with bone graft, should be considered.
Más allá de los procesos de enseñanza-aprendizaje tradicionales: construcción de un recurso didáctico digital
Authors: Hernández Jaime Josefina , Jiménez Galán Yasmín Ivette , Rodríguez Flores Eduardo
Published: February 2020

En las últimas décadas, las tecnologías de la información y la comunicación (TIC) se han desarrollado de manera vertiginosa. Su utilización ha tenido un fuerte impacto en todos los ámbitos de la vida humana. Concretamente en el ámbito educativo han tenido una fuerte incidencia al transformar las formas de enseñar y de aprender, lo que implica nuevas y variadas exigencias, desafíos y posibilidades que permitan facilitar, enriquecer y fortalecer los procesos de enseñanza-aprendizaje. Una de dichas posibilidades se centra en el desarrollo de materiales y recursos didácticos digitales (RDD). Teniendo en cuenta lo anterior, el objetivo de este trabajo fue la construcción de un RDD como apoyo a los procesos educativos de la unidad de aprendizaje Administración de Proyectos que se imparte en la Escuela Superior de Cómputo (ESCOM) del Instituto Politécnico Nacional (IPN). Con fundamento en una investigación aplicada, se siguieron dos etapas: en la primera se llevó a cabo un análisis documental y, en la segunda, se construyó el RDD. Dicha construcción se realizó con base en el programa sintético de la unidad de aprendizaje en cuestión y en los aspectos pedagógicos, editoriales, gráficos y técnicos exigidos y evaluados por la Unidad Politécnica para la Educación Virtual (UPEV) del IPN, así como en las características y funciones de los RDD. Así, el RDD desarrollado está apegado a los objetivos y necesidades curriculares, considerando su adecuación al contexto y una apropiada organización y pertinencia del contenido, y está reforzado con imágenes diseñadas en función de cada uno de los temas. Adicionalmente, cuenta con lecturas complementarias, ligas de videos y artículos de Internet, actividades de aprendizaje a desarrollar con un enfoque por competencias, presentaciones en PowerPoint y un test (con reactivos aleatorios) que el estudiante podrá contestar al término de cada unidad temática, con lo que se pretende que reflexione sobre su progreso o detención en relación con los aprendizajes esperados.
Simultaneous determination of warfarin and 7-hydroxywarfarin in rat plasma by HPLC-FLD
Authors: Zayed Aref , Babaresh Wahby M. , Darweesh Ruba S. , El-Elimat Tamam
Published: February 2020

In this study, high-performance liquid chromatography with fluorescence detection (HPLC-FLD) has been used for the first time, for direct determination of warfarin and its major metabolite, 7-hydroxywarfarin, in rat plasma. The simple and sensitive method was developed using Fortis® reversed-phase diphenyl column (150 × 4.6 mm, 3 μm) and a mobile phase composed of phosphate buffer (25 mmol L−1)/methanol/acetonitrile (70:20:10, V/V/V), adjusted to pH 7.4, at a flow rate of 0.8 mL min−1. The diphenyl chemistry of the stationary phase provided a unique selectivity for separating the structurally related aromatic analytes, warfarin and 7-hydroxywarfarin, allowing their successful quantification in the complex plasma matrix. The method was linear over the range 0.01–25 μg mL−1, for warfarin and 7-hydroxywarfarin, and was found to be accurate, precise and selective in accordance with US FDA guidance for bioanalytical method validation. The method was sensitive enough to quantify 0.01 μg mL−1 of warfarin and 7-hydroxywarfarin (LLOQ) using only 100 μL of plasma. The applicability of this method was demonstrated by analyzing samples obtained from rats after oral administration of a single warfarin dose, and studying warfarin and 7-hydroxywarfarin pharmacokinetics.
Advanced flow cell design for in vitro release testing of mucoadhesive buccal films
Authors: Grilc Blaž , Zdovc Jurij , Planinšek Odon
Published: February 2020

Films for buccal application are a slowly emerging new platform for drug delivery. There remains a lack of analytical techniques for the determination of in vitro active pharmaceutical ingredient release. The aim here was to develop an alternative method to the commonly used United States Pharmacopoeia (USP) 2 method, based on the flow-through cell. This system extends the release time and enables more detailed sample discrimination according to formulation. It could be used as a tool for in vivo prediction of drug release rates from buccal film formulations. The flow cell contains two chambers separated by a membrane through which the released active pharmaceutical ingredient is measured. Vital system variables and their effects on the release rate of the model active pharmaceutical ingredient are presented for formulations based on sodium alginate polymer. The method reflects the differences between films and is shown to be discriminatory for evaluation of buccal formulations.