bluuebunny/crossref_metadata_2025 huggingface dataset:
Role of circadian rhythm disorders on EMT and tumour–immune interactions in endocrine-related cancers
Authors: Hadadi Eva , Acloque Hervé
Published: January 2021

The circadian rhythm is a major environmental regulator of plants and animal physiology. The alternation of days and nights is translated at the cell and tissue level thanks to a molecular machinery, called the circadian clock. This clock controls in particular numerous endocrine functions, and its imbalances can have serious consequences on homeostasis. This is particularly true for the development of endocrine-related cancers, like breast, ovarian and prostate cancer. Circadian rhythm disorder (CRD) not only affects key hormone levels (including oestrogen, melatonin, insulin, glucagon, cortisol) but also favours a pro-inflammatory and immunosuppressive phenotype in the tumour microenvironment. This particular aspect is conducive to epithelial-mesenchymal transition (EMT) of solid epithelial tumours and cancer cell dissemination. It also favours resistance to chemo- and immunotherapy. Here, we discuss the current knowledge on this crosstalk between CRD, EMT and the immune microenvironment in endocrine-related cancers and its consequences for the development of efficient therapies.
Arabinogalactan-proteins
Authors: Ma Yingxuan , Johnson Kim
Published: January 2021

Arabinogalactan-proteins (AGPs) are highly glycosylated proteins (glycoproteins) found in the cell walls of plants. AGPs account for only a small portion of the cell wall, usually no more than 1% of dry mass of the primary wall. AGPs are members of the hydroxyproline-rich glycoprotein (HRGP) superfamily that represent a large and diverse group of glycosylated wall proteins. AGPs have attracted considerable attention due to their highly complex structures and potential roles in signalling. In addition, they have industrial and health applications due to their chemical/physical properties (water-holding, adhesion and emulsification). Glycosylation can account for more than 90% of the total mass. AGPs have been reported in a wide range of higher plants in seeds, roots, stems, leaves and inflorescences. They have also been reported in secretions of cell culture medium of root, leaf, endosperm and embryo tissues, and some exudate producing cell types such as stylar canal cells are capable of producing lavish amounts of AGPs.
Anisotropic Cardiac Conduction
Authors: Kotadia Irum , Whitaker John , Roney Caroline , Niederer Steven , O’Neill Mark , Bishop Martin , Wright Matthew
Published: January 2021

Anisotropy is the property of directional dependence. In cardiac tissue, conduction velocity is anisotropic and its orientation is determined by myocyte direction. Cell shape and size, excitability, myocardial fibrosis, gap junction distribution and function are all considered to contribute to anisotropic conduction. In disease states, anisotropic conduction may be enhanced, and is implicated, in the genesis of pathological arrhythmias. The principal mechanism responsible for enhanced anisotropy in disease remains uncertain. Possible contributors include changes in cellular excitability, changes in gap junction distribution or function and cellular uncoupling through interstitial fibrosis. It has recently been demonstrated that myocyte orientation may be identified using diffusion tensor magnetic resonance imaging in explanted hearts, and multisite pacing protocols have been proposed to estimate myocyte orientation and anisotropic conductionin vivo. These tools have the potential to contribute to the understanding of the role of myocyte disarray and anisotropic conduction in arrhythmic states.
Decrement Evoked Potential Mapping to Guide Ventricular Tachycardia Ablation: Elucidating the Functional Substrate
Authors: Bhaskaran Abhishek , Fitzgerald John , Jackson Nicholas , Gizurarson Sigfus , Nanthakumar Kumaraswamy , Porta-Sánchez Andreu
Published: January 2021

Empirical approaches to targeting the ventricular tachycardia (VT) substrate include mapping of late potentials, local abnormal electrogram, pace-mapping and homogenisation of the abnormal signals. These approaches do not try to differentiate between the passive or active role of local signals as the critical components of the VT circuit. By not considering the functional components, these approaches often view the substrate as a fixed anatomical barrier. Strategies to improve the success of VT ablation need to include the identification of critical functional substrate. Decrement-evoked potential (DeEP) mapping has been developed to elucidate this using an extra-stimulus added to a pacing drive train. With knowledge translation in mind, the authors detail the evolution of the DeEP concept by way of a study of simultaneous panoramic endocardial mapping in VT ablation; an in silico modelling study to demonstrate the factors influencing DeEPs; a multicentre VT ablation validation study; a practical approach to DeEP mapping; the potential utility of DeEPs to identify arrhythmogenic atrial substrate; and, finally, other functional mapping strategies.
Otimismo e autoeficácia no contexto da sucessão em empresas familiares
Authors: Conte Jéssica Lopes , Bellini Luana Kethlyn , Teston Sayonara De Fátima
Published: January 2021

O otimismo e a autoeficácia de sucessores de empresas familiares podem contribuir para que o processo sucessório se efetive de maneira mais assertiva. Com vistas a estes temas, o trabalho buscou avaliar o índice de otimismo e autoeficácia dos sucessores de empresas familiares de Chapecó, Santa Catarina. Por meio da abordagem quantitativa, e de questionários de autorrelato, os índices de otimismo e autoeficácia dos sucessores das empresas familiares foram levantados e correlacionados. Entre os principais resultados da pesquisa, verificou-se que os participantes apresentam índices elevados nos dois constructos, que há correlação significativa entre diversas variáveis de otimismo e de autoeficácia, bem como, que o otimismo prediz a autoeficácia dos sucessores investigados. O estudo contribui para ampliar estudos sobre empresas familiares no Brasil e sobre comportamentos organizacionais positivos, especialmente o otimismo e a autoeficácia. O estudo apresenta potencial de contribuição para a ampliação do entendimento de aspectos emocionais de um público que poderá contribuir para o desenvolvimento sustentável da região oeste catarinense no futuro.
A Percepção de Contadores Sobre a Demonstração dos Fluxos de Caixa no Setor Público Brasileiro
Authors: Zamprogno Bruno , Bezerra Filho João Eudes
Published: January 2021

O objetivo desta pesquisa foi verificar a percepção de contadores que atuam com a Contabilidade Aplicada ao Setor Público (CASP) acerca da evidenciação da Demonstração dos Fluxos de Caixa (DFC), conforme modelo da Secretaria do Tesouro Nacional (STN). Para isso, realizou-se pesquisa descritiva, de corte transversal, com abordagem quantitativa. Os dados, obtidos por meio de questionário, foram segregados pela atuação dos respondentes, além de serem agrupados em seis clusters, conforme a similaridade e a consistência das respostas. Em alguns casos, houve opiniões divergentes em relação à DFC, como se esse demonstrativo deveria evidenciar os recursos extraorçamentários e se ele é necessário ou não, além da maioria sugerir que a DFC deveria ter outra forma de apresentação. Espera-se que este estudo contribua com a discussão dos profissionais que atuam, de forma prática ou teórica, com a CASP e que estes ou os órgãos normatizadores, se for o caso, busquem melhorias para as informações divulgadas à sociedade.
A influência da Gestão do Tempo sobre a Qualidade de Vida no Trabalho
Authors: Montenegro Carolina Barbosa , Maia Herta Camila Fernandes Diógenes Nunes , Da Silva Iza Leilla Carlos , De Guimarães Julio Cesar Ferro , Severo Eliana Andréa
Published: January 2021

A gestão do tempo vem ganhando importância e sendo percebida como fator que interfere na qualidade de vida no trabalho. O estudo tem como objetivo analisar a influência da gestão do tempo sobre a qualidade de vida no trabalho em diferentes ramos de atividades no Nordeste brasileiro. Trata-se de uma pesquisa quantitativa (survey) aplicada a 454 gestores. O estudo foi concentrado na área de gestão do tempo utilizando três construtos: circunstância/desperdício, importância e urgência. Foram aplicados testes estatísticos de confiabilidade e normalidade dos dados para averiguar as correlações entre as variáveis. Na análise descritiva foram utilizadas Análise Fatorial Confirmatória, correlação de Pearson e a Regressão Linear Múltipla. A pesquisa trouxe como resultados que a qualidade de vida no trabalho é influenciada diretamente pela gestão do tempo por meio dos constructos estudados. Outro achado da pesquisa, trata da constatação de que o tempo é melhor aproveitado com as coisas importantes quando não se está dedicado às circunstâncias/desperdícios e urgências.
END-OF-LIFE VEHICLES MANAGEMENT AND INITIAL ESTIMATION OF THE MATERIAL FLOW FROM ELV IN VIETNAM
Authors: Nguyen Quang Duc
Published: January 2021

End-of-life vehicles (ELV) can be considered as a specific scrap source in Vietnam that is out of the Government control. This research is the initial research in Vietnam for the estimation of ELV flow and the determination of material flow from an ELV. For the estimation of ELV in Vietnam, a combination tool using the population balance model, logistic function and Weibull distribution is applied. It is estimated that the owner rate of car in household is quickly increased, and thus, increases the number of car and the ELV. By the 2030, the owner rate in household reach 0.13 unit per household, double it is in 2022 and 10 times higher in 2012. Up to 2030, nearly 190.000 passenger cars will be discarded, equals with the accumulated outdated automobiles up to 2019. In the case of a common passenger car, it is found that more than a half of an ELV (57%, in weight) can be reused in Vietnam, including mostly engine parts, wheels, air bag, speaker, chassis or mirror. About one third (32%) can be recycled as secondary material resources, including mostly metal parts, some types of plastic and rubber. The rest (11%) that cannot be reused or recycled is dumped without control around the dismantling site, causes many harmful impacts to environment and public health.While ELV is classified into groups of equipment that are needed to retrieve and treat by the producers under Decision 16/2015/QĐ-TTg, Vietnam do not have any proper legislation to control this waste flow, as well as any formal facility to treat it. Thus, it is still hanging for Vietnamese Government to improve the legislation and management infrastructure for the application of Extended Producer Responsibility system to manage this type of waste.
The Christian philosophy of man in Poland in the face of the challenges of the 20th and 21st centuries
Authors: Mazur Piotr Stanisław
Published: January 2021

According to the author of the article, Christian anthropology is characterized by an affirmative approach to Christianity and personalism in the understanding of man. During the last century in Poland it faced four key challenges for its development which were: 1) searching for a proper model of social life connected with the rejection of individualism and collectivism; 2) the clash with collectivist totalitarianism (communism) which imposes an erroneous concept on man; 3) resignation of the Church in her teaching from the domination of the Thomistic model of understanding the world and man; 4) establishment of a naturalistic and transhumanistic model of man in the culture of the turn of the 20th and 21st centuries. Christian anthropology responded to the first three calls with a specific type of personalism: social – in the first case, metaphysical – in the second, liberalist and ethical – in the third. At present time, it must seek a personalistic response to the fourth challenge, while the author believes that Christian anthropology is threatened by fideistic personalism resulting from the acceptance of the naturalistic image of man coming from detailed sciences and the abandonment of attempts to philosophically justify his personal status.
A Novel and Flexible Criterion to Improve Data Transmission in Clustering Protocols in WSNs
Authors: Ataei Mohsen , Kh. Esmaeil Zeinali
Published: January 2021

In this paper a new criterion called Energy-Cost Function is presented according to which in each round the energy cost for any individual node is calculated. When transmitting their data, the nodes make decisions based on this very cost function. In case the nodes decides that it
will cost a lower amount of energy transmitting the data to the sink by itself rather than by the cluster-head to the sink, then the node transmits the data directly. In this way the cluster overload is reduced and both the network lifetime and instability period is boosted. Based on the conditions
of the problem, cost function parameters are variable and since all the decisions are made locally, network scalability potential is retained. Simulation results show that the network lifetime or its instability period based on the cost function employed will be improved up to 40% in relation
to the LEACH protocol.
A Computer Vision Framework for Automated Shape Retrieval
Authors: Saha Sourav , Kaur Sahibjot , Basak Jayanta , Mahapatra Priya Ranjan Sinha
Published: January 2021

With the increasing number of images generated every day, textual annotation of images for image mining becomes impractical and inefficient. Thus, computer vision based image retrieval has received considerable interest in recent years. One of the fundamental characteristics of any
image representation of an object is its shape which plays a vital role to recognize the object at primitive level. Keeping this view as the primary motivational focus, we propose a shape descriptive frame work using a multilevel tree structured representation called Hierarchical Convex Polygonal
Decomposition (HCPD). Such a frame work explores different degrees of convexity of an object’s contour-segments in the course of its construction. The convex and non-convex segments of an object’s contour are discovered at every level of the HCPD-tree generation by repetitive convex-polygonal
approximation of contour segments. We have also presented a novel shape-string-encoding scheme for representing the HCPD-tree which allows us touse the popular concept of string-edit distance to compute shape similarity score between two objects. The proposed framework when deployed for similar
shape retrieval task demonstrates reasonably good performance in comparison with other popular shape-retrieval algorithms.
Psychological exhaustion of radiological nursing workers in nuclear medicine services
Authors: Melo Juliana Almeida Coelho de , Gelbcke Francine Lima , Amadigi Felipa Rafaela , Huhn Andrea , Silva Charlene da , Ribeiro Gerusa
Published: January 2021

ABSTRACT Objective: to analyze the psychic exhaustion experienced by nursing workers in nuclear medicine services. Method: a qualitative study that used the methodological assumptions of Psychodynamics of Work. The study was 12 nursing workers from two nuclear medicine services. For data analysis and treatment, Collective Subject Discourse was used with help of the software QualiQuantSoft®. Results: the psychic exhaustion experienced by nursing workers originates mainly from work organization, conditions and relationships, and can compromise the quality of care provided and workers’ quality of life. Psychic exhaustion is manifested by stress, tiredness and apathy in activities performed outside the work environment. Final considerations: individuals who work also live socially, so psychic health maintenance will impact on work activity. The service should include workers in the organization and offer spaces for dialogue and collective support.
LA TRANSPARENCIA EN DOS MUNICIPIOS DE GRAN POBLACIÓN DE LA COMUNITAT VALENCIANA: ENTRE EL ISOMORFISMO MIMÉTICO Y LA GENERACIÓN DE LEGITIMIDAD
Authors: Beneyto Gonzalo Pardo
Published: January 2021

RESUMEN Este trabajo tiene como objetivo fundamental realizar un análisis sobre los elementos que han fundamentado que los ayuntamiento de Alicante y València hayan asumido procedimientos para incorporar la transparencia (2008-2017). En concreto, partiremos del neo-institucionalismo sociológico y de los índices de Transparencia Internacional para caracterizar esta herramienta de buen gobierno y su importancia relativa en ambos ayuntamientos. Entre algunos de los resultados preliminares que hemos obtenido, podemos destacar tanto el papel isomórfico de la legislación como la necesidad de mejorar la reputación de las instituciones estudiadas para implementar dichas políticas.
O POLICIAMENTO COMUNITÁRIO COMO UMA PRÁTICA SOCIAL E O GERENCIALISMO NA SEGURANÇA PÚBLICA: ANÁLISES DE UMA UNIDADE OPERACIONAL DA POLÍCIA MILITAR,
Authors: Ferreira Daniel Victor de Sousa , Borges Jacquelaine Florindo
Published: January 2021

RESUMO A partir da perspectiva da estratégia como uma prática social e de uma orientação etnometodológica, a questão de pesquisa deste artigo é: como ocorrem as micro práticas de policiamento conduzidas por membros de uma Unidade Operacional da Polícia Militar, em um contexto em que predominam macro práticas da Nova Gestão Pública e Polícia Comunitária? Na pesquisa de campo, foram utilizadas técnicas de pesquisa documental, entrevistas com policiais e observação participante, com notas em caderno de campo de reuniões comunitárias e do atendimento aos moradores por telefone e por aplicativo de mensagens virtuais e emergências policiais. Os resultados mostram que as micro práticas de policiamento comunitário estão imersas em uma tensão entre uma abordagem participativa do policiamento comunitário e macro práticas que privilegiam os instrumentos da administração pública gerencial. Esta pesquisa mostra que a perspectiva da estratégia como uma prática social oferece alternativas para lidar com essas tensões.
INFLUÊNCIA DOS OBJETIVOS COLABORATIVOS NA MENSURAÇÃO DO DESEMPENHO DA COOPERAÇÃO MEDIADA PELAS CARACTERÍSTICAS DE TRANSAÇÃO
Authors: Vogt Mara , Beuren Ilse Maria , Silva Marcia Zanievicz da
Published: January 2021

RESUMO Este estudo analisa a influência dos objetivos colaborativos nas práticas da mensuração do desempenho da cooperação, mediada pelas características de transação do setor de compras de hospitais. Uma survey foi realizada com 1.224 indivíduos da área de compras de hospitais do Brasil identificados no LinkedIn, desses 529 aceitaram o convite para participar da rede, aos quais se enviou o link do questionário, e a amostra final consiste das 120 respostas válidas. Para análise dos dados foi aplicada a modelagem de equações estruturais. Os resultados indicam que os objetivos colaborativos influenciam positivamente as características de transação entre comprador-fornecedor, assim como a mensuração do desempenho da cooperação. Porém, não foi observada mediação das características de transação entre comprador-fornecedor na relação dos objetivos colaborativos com a mensuração do desempenho. Conclui-se que quanto mais objetivos colaborativos houver no setor de compras de hospitais, menos arriscadas serão as características de transação relativas à variabilidade ambiental e interdependência de tarefas e, quanto maiores forem os objetivos colaborativos, melhor será o desempenho da cooperação comprador-fornecedor. O estudo contribui ao ressaltar a influência dos objetivos colaborativos no setor de compras de hospitais, tendo em vista a variabilidade ambiental e interdependência de tarefas, assim como o desempenho operacional, dos funcionários e de inovação.
INFLUÊNCIA DO GOOGLE TRENDS EM AÇÕES LISTADAS NA BOLSA DE VALORES BRASILEIRA: EVIDÊNCIAS A PARTIR DA MODELAGEM PVAR
Authors: Pereira Matheus Machado de , Rosa Thais Gomez da , Bender Filho Reisoli
Published: January 2021

RESUMO O trabalho propôs analisar como as pesquisas no buscador Google influenciam o retorno, a volatilidade e o volume de negociações das ações que compõem o índice Ibovespa, considerando o período entre 2015 e 2020. Para isso aplicou-se a modelagem de Painel de Vetores Autorregressivos (PVAR). Os resultados do volume histórico de pesquisas do nome da empresa e do ticker apresentam relação bidirecional com o desvio padrão dos retornos, da volatilidade e do volume negociado, sugerindo que a demanda de informação do investidor é atendida, em parte, por pesquisas em buscadores, efeito que também é observado no aumento do volume de negociações, após um choque no volume histórico de pesquisas do ticker. Essas evidencias apontam à eficiência do mercado, pelo menos, para situações semanais, em que há a possibilidade de o investidor pesquisar e compreender cada nova situação do mercado. Entretanto, o acompanhamento da empresa não garante, pelo menos no longo prazo, que os retornos sejam maiores, determinando que a Hipótese do Mercado Eficiente, na versão semi-forte, seja indiretamente observada, pelo aumento de negociações sem a devida alteração no retorno. Para tanto, a utilização do Google Trends pode, em alguma medida, melhorar a acurácia de modelos de previsão que busquem prever o retorno, a volatilidade e o volume de ações.
Análise de uma experiência híbrida no ensino de Física 1
Authors: Monteiro Fábio Ferreira
Published: January 2021

Este artigo apresenta uma análise da percepção dos estudantes sobre uma experiência de ensino híbrido, desenhada e aplicada nas disciplinas básicas de Física 1 de 18 cursos diferentes na Universidade de Brasília. Uma pesquisa de opinião, utilizando escala tipo-Likert, foi elaborada e utilizada para estimar o grau de concordância dos estudantes com proposições afirmativas relativas à organização da disciplina, potencial de aprendizagem e qualidade do sistema de avaliação. Os resultados revelaram boa concordância com as proposições apresentadas, e indicaram que, na opinião dos estudantes, os fóruns on-line foram importantes no processo de aprendizagem. Contudo, apontou também algumas necessidades, como: (a) intervenções que possam estimular a inclusão dos estudantes menos proficientes; (b) atividades que possam influenciar estes estudantes a desenvolver motivação para o aprendizado; e (c) reflexões sobre as regras das avaliações formativas e somativas, que possam transformar o aspecto punitivo em uma forma de mediação na composição das menções finais dos estudantes.
MEDICINAL PLANTS USED IN SELF-CARE BY PEOPLE WITH CANCER IN PALLIATIVE CARE
Authors: Bonow Camila Timm , Ceolin Teila , Lopes Caroline Vasconcellos , Zillmer Juliana Graciela Vestena , Vargas Natália Rosiely Costa , Heck Rita Maria
Published: January 2021

ABSTRACT Objective: to know the medicinal plants used in self-care by people with cancer in palliative care. Method: this is a qualitative study, of the exploratory and descriptive type. The research was conducted in Pelotas, Rio Grande do Sul, in the participants' homes. Data collection was conducted between June and September 2018. The study participants were people with cancer in palliative care followed-up by the Program of Interdisciplinary Home Hospitalization, in use of medicinal plants. They totaled 20 participants, with 14 having the presence of the caregiver during the interview; she occasionally encouraged them to answer the questions. Results: it was identified that people with cancer in palliative care already used medicinal plants before the illness and continued using them in a search for therapeutic action, both for reducing symptoms caused by late-stage of the disease and for curing cancer. The knowledge of medicinal plants, most of the times, was passed from generation to generation or by friends and, generally, the use of plants is not informed to the health care professionals. Conclusion: the research produced a recovery of the popular knowledge of the species used in palliative care by people with cancer, promoting the comprehension of their habits regarding the use of the plants. Accordingly, the expansion of pharmacological studies related to the plants used for the treatment of signs and symptoms of cancer is essential.
EFFECTIVENESS OF AURICULOACUPUNCTURE ON THE SLEEP QUALITY OF WORKING NURSING PROFESSIONALS DURING THE COVID-19 PANDEMIC
Authors: Melo Geórgia Alcântara Alencar , Lira Neto José Cláudio Garcia , Silva Renan Alves , Martins Marina Guerra , Pereira Francisco Gilberto Fernandes , Caetano Joselany Áfio
Published: January 2021

ABSTRACT Objective: to evaluate the effectiveness of auriculoacupuncture in improving the sleep quality of nursing professionals in the fight against the COVID-19 pandemic. Method: quasi-experimental before and after study, without a control or matching group performed from May to July 2020, in a referral hospital for infectious diseases in Ceará. The sample consisted of 26 nursing professionals, including nurses and technicians, who performed three sessions of auriculoacupuncture, once a week, for four weeks. Sleep quality was measured by the Pittsburg Sleep Quality Index. The effects of the intervention were analyzed by the student's “t” test to compare means between the first and last application, one-way ANOVA with repeated measures and post-hoc Sidak´s test. Results: regarding the components of the Pittsburg Sleep Quality Index, significant differences were observed between the individuals in the components: subjective sleep quality (p=0.001); sleep latency (p<0.001), sleep duration (p<0.001), habitual sleep efficiency (p=0.011), sleep disorders (p<0.001), sleeping medications (p=0.005) and excessive daytime sleep sleepiness (p<0.001). The overall sleep index also changed significantly (p<0.001). The intervention reduced the sleep quality index score by 52.35%. Conclusion: the changes that occurred were able to change the category in sleep classification through a detailed decrease in the Pittsburg Sleep Quality Index scores. Significant differences were observed between the first and final moments in the global index and in all components.
Proposal of standardization of Horus® computerized posturography in adults
Authors: Ferreira Evaldo César Macau Furtado , Mezzalira Raquel , Stoler Guita , Rocha Vanessa Brito Campoy , Chone Carlos Takahiro , Paschoal Jorge Rizzato
Published: January 2021

ABSTRACT Purpose: To propose a normalization model of a posturography platform in adults without changes in body balance, through descriptive analysis by age group and sex. Methods: Cross-sectional observational study. Adults, with no changes in body balance and no vestibular complaints were submitted to 6 sensory conditions on the Horus® posturography platform. The following variables were analyzed: stability limit area and confidence ellipse area, trajectory length and average velocity for each condition tested. The variables were analyzed by age group and sex. The equilibrium score, the sensory integration test and the equilibrium index were calculated on the conditions. Results: Sixty-one subjects (38.3%) and 23 (37.7%) were male, 40 (65.57%) between the ages of 20 and 40 and 21 (34.43). %) between 41 and 59 years. The area of the stability limit and pressure center variables for 6 sensory conditions tested - confidence ellipse area, trajectory length, total mean velocity and confidence ellipse ratio by the area of the stability limit were described. There was a statistically significant difference in the comparison between the area of the stability limit between sexes and between age groups, being a higher value in males and in younger patients. Regarding the analysis of the variables by each condition, there was no difference of results between the sexes and age groups. Conclusion: Subjects of different sexes and age groups should be considered separately only in the analysis of the stability limit.
Effect of pre-introduced sodium chloride on cement hydration process
Authors: Cao Yuanzhang , Guo Liping , Chen Bo , Wu Jiandong
Published: January 2021

Chloride-based accelerators are widely used to accelerate cement hydration; however, there is no focus on the effect of the interaction between Cl− and SO42− on cement hydration. Hence, the interaction effect between initial gypsum and sodium chloride (NaCl) in the cement hydration process was investigated. Isothermal calorimetry, scanning electron microscopy, thermogravimetric analysis, X-ray diffraction and inductively coupled plasma spectroscopy were used to evaluate the hydration process of cement paste. Moreover, a thermodynamic model and boundary nucleation and a growth model were applied to calculate the hydration products and describe the hydration process, respectively. It is clear that sodium chloride can accelerate cement hydration, but as the incorporated sodium chloride increases, the acceleration effect is weakened. The incorporation of chloride salts will promote the dissolution of minerals and increase the growth rate. In the early stage of hydration, the formation of ettringite precedes formation of Friedel's salt, owing to the fact that tricalcium aluminate (C3A) favours binding with SO42−, which can be demonstrated by the change in ion concentrations and the evolution of hydration products. The formation of Kuzel's salt depends not only on the chloride concentration but also on the hydration time.
Seismic fragility of concrete bridges designed to current and older Aashto specifications
Authors: Manjily Fatemeh , Mosleh Araliya , Razzaghi Mehran
Published: January 2021

Bridges are essential components of transportation systems and their unacceptable performance following a disaster may lead to disruption to relief operations. Many existing bridges all around the world were designed based on early editions of seismic codes and the performance of some old bridges following seismic events has revealed that they are seismically vulnerable. This paper provides a comparison of the seismic performance of reinforced concrete (RC) bridges designed according to recent code editions and according to earlier provisions. To this end, a probabilistic seismic safety assessment of RC bridges was conducted. Non-linear response history analyses were performed for each set of bridge samples subjected to earthquake ground motions with different severities employing three-dimensional models. The effect of the earthquake focal mechanism on the seismic vulnerability of the bridges was investigated. Moreover, fragility curves were developed for RC bridges designed according to the latest edition of the American Association of State Highway and Transportation Officials (Aashto) specifications (so-called new bridges) and those designed based on pre-1980 specifications (so-called old bridges). The fragility curves are presented in terms of the geometrical specifications of the bridges and the focal mechanism associated with input motions for both new and old bridges.
Modal analysis of concrete arch dam–reservoir–massed foundation system in frequency domain
Authors: Farzad Reza , Lotfi Vahid
Published: January 2021

Modal analysis of concrete arch dam–reservoir–foundation rock systems is a challenging task. The complexities arise mainly due to computing mode shapes encountered when solving an eigenvalue problem with asymmetric generalized mass and stiffness matrices. Moreover, the problem becomes complicated when wave propagation is occurring due to the inclusion of water compressibility and foundation rock mass. In the present study, a computational tool is especially developed for this purpose. The theoretical background is explained initially. Subsequently, dynamic analysis of the Morrow Point arch dam–reservoir–foundation rock system is carried out with different values of reservoir bottom absorption coefficient. In addition, some of the modal characteristics of such systems, including resonant frequencies and natural periods, are discussed. The main objective is to perform these analyses by modal analysis. However, the direct method of analysis is also carried out in each case as a basis for comparison from the perspectives of accuracy and efficiency.
Low-cycle fatigue analysis of a new type of reduced-beam-section connection
Authors: Nadi Amir , Saleh Aboozar , Ayazi Amir
Published: January 2021

Stress concentrations in a new type of reduced-beam-section (RBS) connection were investigated. Experimental and numerical results of RBS connections with semilunar web (SW) and holed tubular webs (HTW) were compared with connections with tubular webs (TW). For the SW, two semi-circular plates were used in place of a flat web in the beam. For the HTW, a steel tube was used instead of part of the beam web and holes were created in the beam web. For the TW, a steel tube was used instead of part of the beam web but without holes. The connections had adequate shear capacity but made little contribution to flexural stiffness and capacity. Semi-deep beam specimens were fabricated and tested under cyclic loading. The results showed that the beam connections with SWs and HTWs had 30% and 20% less fatigue damage respectively than those with TWs. The story drift capacity was also increased to 7%, much more than that stipulated by current seismic codes. The specimens were modelled using finite-element software to validate the experimental results.
Influence of additives on the structural performance of cement-stabilised rammed earth
Authors: Cárdenas-Haro Xavier , Todisco Leonardo , León Javier , Sarmiento Nicole , Samaniego Cristina
Published: January 2021

The influence of additives on the structural behaviour of cement-stabilised rammed earth was investigated through an experimental programme based on 13 different mixes with varying cement contents (6, 8 and 10% by earth weight) and three different types of additives (superplasticiser, air-entraining agent (AEA) and hardening accelerator). In total, 156 specimens were fabricated and tested at 7 and 28 days in order to compare their compressive strength and other properties such as stress–strain relationships, shrinkage and workability. The results highlighted the essential role of cement in increasing the compressive strength of the material. Specifically, cement contents of 6%, 8% and 10% corresponded, respectively, to strength increases of 41%, 80% and 92% compared with the reference mix with a mean compressive strength of 1.15 MPa. The AEA was found to be the most effective additive for increasing the compressive strength, with obtained strengths of up to 2.93 MPa (an increase of 155% compared with the reference mix). The efficiency of each mix was evaluated through a strength/cost ratio. In addition, an overall comparison of compressive strength, shrinkage, deformation, cost and workability was performed using an analytic hierarchy process. Finally, the experimental results were compared with the mechanical requirements of various codes.
RECREATION MONITORING OF KATUNSKII RESERVATION
Authors:   Tomsk State University (Tomsk, Russian Federation), Rednikin A.R.
Published: January 2021

This article describes problems of recreation in natural reservations with mountain landscapes on the example of Katunskii reservation. The article shows different methods of determination of anthropogenic influence and ways of decreasing negative influence. A number of reasons for the deterioration of the state of the natural-territorial complex are identified.
Strategies for Solving Analytical and Holistic Problems
Authors: Apanovich V.V. , Tishchenko A.G. , Arutyunova K.R. , Alexandrov Y.I.
Published: January 2021

Studies of the contribution of institutional identity to the formation of psychological structures suggest that such identity imposes restrictions on the formation of new experience. The aim of this work was to describe strategies for solving analytical and holistic problems that are characteristic for individuals with analytical and holistic types of mentality. Participants (N = 105) were solving analytical (a) and holistic (h) word problems (a-problems: “Knights and Knaves” and “Grid-logic”; h-problems: “Anagrams” and “Moral dilemmas”). The results have shown that “normativity” was the principle characteristic of the problem-solving strategy accounting for the observed differences between individuals with analytical and holistic types of mentality.
Multitasking as Simultaneous Execution and as a Task Shift: Approaches to Diagnostic of Media-Multitasking and its Efficacy in Children and Adolescents
Authors: Soldatova G.U. , Rasskazova E.I.
Published: January 2021

The transformation of the problem of multitasking as an object of experimental cognitive psychology into a General psychological problem of constant combination of several activities, provoked by information technologies and which has become a social criterion for a successful person, requires a comparison of different approaches to definition, modeling and diagnostics. The aim of this study is to compare the features of media multitasking as simultaneous task completion and switching between them in schoolchildren. 57 primary school students, 54 teenagers aged 11—13 and 46 teenagers aged 14—16 solved a series of tasks presented simultaneously in windows on a computer and sequentially in the form of SMS messages to a mobile phone. According to the results, multitasking as simultaneous task completion was observed in only 4.5% of children and adolescents and was not associated with multitasking as switching between tasks. Multitasking as delaying and returning to tasks was typical for every second child and increased with age, but it was also not associated with the speed and efficiency of task completion. By the age of 11—13, children are characterized by attempts to speed up and optimize activities in a multitasking environment through various, often ineffective strategies. Attempts to speed up and optimize tasks are more typical and, according to our data, are formed earlier among boys. The results are discussed in the context of the hypothesis that the development of multitasking in children and adolescents should be considered as the formation of strategies for solving problems in a multitasking environment.
ERP Correlates of Performance Monitoring: a Mouse-Tracking Study
Authors: Medvedev V.A. , Sayfulina K.E. , Rytikova A.M. , Chernyshev B.V.
Published: January 2021

Performance monitoring involves detection of action outcomes and initiation of appropriate behavioral adaptations. Psychophysiological mechanisms of performance monitoring remain largely understudied in the context of uncertainty that arises at the stage of stimulus identification and decision making, as well as in the context of inhibition/correction of the motor response. In the current study, we investigate relations between behavioral performance measures and several ERP components: N2, ERN/CRN and Pe. Participants performed a condensation task and made their responses by moving mouse cursor. Response registration using mouse tracking allowed us to obtain two independent behavioral measures: mouse movement initiation time and movement duration. Amplitude of N2 and CRN was dependent on movement initiation time: N2 was increased and CRN was decreased for ‘late’ correct responses compared with ‘early’ correct ones; this finding is compatible with the explanation that ‘late’ responses involve higher pre-response conflict and higher uncertainty compared with ‘early’ ones. Movement duration time was a novel independent behavioral parameter, that cannot be measured using traditional keystrokes. This behavioral measure was related to the early Pe: its amplitude was more positive for ‘long’ responses compared with ‘short’ ones. This finding may be explained by mechanisms of an ongoing response inhibition. We suggest that this effect is linked to response stopping, which may be related to outcome awareness.
Applied Research on the Role of Context in the Processes of Cognitive Processing of Social Information
Authors: Samoylenko E.S. , Nikiforov R.E.
Published: January 2021

The article discusses research on the role of context in the cognitive processing of social information. The main types of context and the grounds on which they are differentiated in psychology are systematized. Some contradictory results of applied research on the role of context are shown on the example of the processes of perception and memorization of advertising embedded in it. An interpretation of these contradictions is given and the limitations of the considered works associated with the use of samples narrow in terms of age and social composition, as well as the presence of a number of uncontrollable factors, are determined. The ways of overcoming the revealed contradictions and limitations in further research are proposed.
Image of Motherland: Justification and Approbation of Diagnostic Tools
Authors: Tarasov M.V.
Published: January 2021

The topic of patriotic consciousness and patriotic education today claims to the status of a nationwide idea, so the research interest in this issue is unusually high. The study of patriotic consciousness should begin with an analysis of the subject which the patriotic feelings of citizens are directed on. This subject is the motherland and its image in the minds of citizens. The article gives an overview of the data, which is used for the semantic deferential method «Image of Motherland» and the procedure of studying of the image of the Motherland based on this method. The sample was 165 respondents. Based on the results obtained, it is concluded that the use of this methodology is a tool, which lets us to determine social ideas about the image of the Motherland. It has been proved that the image of the Motherland in consciousness reflects the ideas about the country and the state in which the respondents were born and raised, it is not associated with a so-called “Small homeland”, but with a certain commonality of territory, nature and culture. There is reason to believe that the image of the Motherland in the human mind can be viewed as an image “for oneself” and an image “for others”: in the first case, the Motherland is perceived as big and strong, interesting for life and comfortable, simple and cultural; Motherland “for others” is bold and friendly, strong and kind.
Does inguinal hernia repair increase urinary retention? Our 10-year results
Authors: Efendiye Ferec , Celasin Haydar
Published: January 2021

Background: This study aimed to determine the incidence of urinary retention in patients undergoing inguinal hernia repair at our hospital as well as the predictors of urinary retention.Methods: Patients who underwent inguinal hernia repair at Lokman Hekim university Akay hospital between January 2010 and January 2020 were included in the study. The total number of patients was 578. The patients were divided into two groups: group-1 (patients who developed urinary retention following inguinal hernia repair) and group-2 (patients who did not develop urinary retention following inguinal hernia repair). The relationship between urinary retention and age, history of preoperative BPH, type and localization of hernia, operative and anesthesia time, perioperative NSAID, narcotic analgesic and antispasmodic use, presence of DM and rheumatic diseases and perioperative fluid replacement was investigated. Results: The median ages were 57.7±15.1 (20-74) and 48.8±17.5 (18-89) in groups 1 and 2, respectively (p<0.001).   5.36% (31/578) of the patients developed urinary retention. The group-1 were found to be at a more advanced age (p<0.001), have higher rates of BPH and DM (p<0.001), longer operative time (p<0.001), higher rate of perioperative antispasmodic use (p<0.001), higher rate of perioperative fluid replacement (p<0.001) and a lower rate of perioperative NSAID use (p<0.001) compared to those who did not develop postoperative urinary retention. Conclusions: According to the results of this study, advanced age, history of DM and BPH, antispasmodic use, longer operative time, high amount of postoperative fluid replacement and no perioperative use of NSAIDs lead to an increased risk of urinary retention.
Fiscal stabilisation policy in the EMU. An insight from the theory of optimum currency areas
Authors: Misiak Małgorzata
Published: January 2021

The aim of the paper is to examine the role and place of the fiscal stabilisation policy in the European Monetary Union (EMU) from the perspective of the theory of optimum currency areas (OCA). We examine the theoretical underpinning for the policy to mitigate the economic fluctuations in a monetary union, and answer the questions of whether fiscal integration is a prerequisite for the “optimality” of a currency area and at what level of governance a stabilising fiscal policy should be conducted. We conclude with a short revision of how OCA theory is applied to the project of monetary and economic integration in the European Union (EU) and some conclusions for future development and research.
Ultrastructural Study of the Outer Cortex, Deep Cortex and Medulla of Mesenteric Lymph Node in Adult Goats
Authors: Balasundaram K. , Sivagnanam S.
Published: January 2021

Background: A mesenteric lymph node in the sub pyloric region which is the longest among all mesenteric lymph nodes in adult goats was identified for study under the scanning electron microscope. Methods: The outer cortical, deep cortical and medullary parenchyma of the collected lymph nodes was thoroughly screened under VEGA3 TESCAN. The outer cortical parenchyma revealed T lymphocytes, B lymphocytes, Sinus Lining Cells (SLC) and Sinus Reticular Cells (SRC) at a magnification of 9600x. The deep cortical parenchyma revealed Reticular cells, T lymphocytes and Interdigitating cells (IDC) at 8000x magnification. Result: The medullary parenchyma revealed T lymphocytes, B lymphocytes, Sinus Lining Cells (SLC), Fibrous Reticular Cells (FRC) and medullary sinuses at a magnification of 8500x. Plasma cells and lymphocytes also remained in the sinus. The morphology and relations of the cells observed were recorded.
DIRECT AND INDIRECT EFFECT OF INTOLERANCE OF UNCERTAINTY ON DISTRESS DURING THE COVID-19 PANDEMIC
Authors: Blanuša Jelena , Barzut Vesna , Knežević Jasmina
Published: January 2021

Since the coronavirus outbreak influenced the whole population in 2020, many individuals, both directly and indirectly affected, experienced increased levels of distress at that time. Such a global mental health crisis requires identification of key mechanisms which contribute to distress during pandemic. Specificity of COVID-19 outbreak was lack of sufficient information at the beginning and, consequently, a high level of perceived uncertainty. The main aim of this study was to examine the influence of the intolerance of uncertainty to the experienced level of distress during the pandemic. Additionally, influence of media exposure and fear were examined. Total of 740 participants took part in an online study during the coronavirus outbreak in Serbia. Moderately high level of distress was recorded in our sample. About ⅓ of participants were in each group: no distress, moderately high and highly elevated. Results of serial mediation analysis showed that the intolerance of uncertainty had a significant direct effect on distress, but also indirect via fear of COVID-19 and media exposure. Higher levels of intolerance of uncertainty lead to more time spent on media looking for information, and consequently to higher fear and distress levels. Furthermore, it was shown that media exposure also increased the level of fear. Such results emphasized the importance of unambiguous, clear informing during the time of crisis which can decrease uncertainty, and provided some practical implication for media and authorities.
La posición de las cláusulas temporales con cuando
Authors:   Universidad Nacional Autónoma de México, Guerrero Lilián , Gerardo-Tavira Rebeca ,   Universidad Nacional Autónoma de México
Published: January 2021

Previous typological studies have shown that temporal clauses, unlike other adverbial clauses, can occur before or after the main clause, and this order variation has been observed across languages and within the same language. In the case of Spanish, some studies have found that temporal clauses tend to occur at the beginning of the clause. In this paper, we extend the assumptions of typological studies into the analysis of temporal clauses introduced by cuando ‘when’. Based in used data, we found that the initial position is preferred in oral data, while both positions are equally common in writing data. We examine some semantic, syntactic, and pragmatic motivations that, together, may explain this order variation: the semantic nature of cuando, sequential iconicity, length, and syntactic complexity, as well as pragmatic order.