bluuebunny/crossref_metadata_2025 huggingface dataset:
VIBRATION OF 2D-FGSW TIMOSHENKO BEAMS UNDER A MOVING HARMONIC LOAD
Authors: Nguyen Kien Dinh
Published: January 2021

Vibration of two-directional functionally graded sandwich (2D-FGSW) Timoshenko beams under a moving harmonic load is investigated. The beams consist of three layers, a homogeneous core and two functionally graded skin layers with the material properties continuously varying in both the thickness and length directions by power functions. A finite element formulation is derived and employed to compute the vibration characteristics of the beams. The obtained numerical result reveals that the material inhomogeneity and the layer thickness ratio play an important role on the natural frequencies and dynamic response of the beams. A parametric study is carried out to highlight the effects of the power-law indexes, the moving load speed and excitation frequency on the vibration characteristics of the beams.  The influence of the beam aspect ratio on the vibration of the beams is also examined and discussed.
REMOVAL OF POLLUTANTS FROM DISPERSE BLACK DYE WASTEWATER BY MUCILAGE FROM DRAGON FRUIT PEEL
Authors: Le Hoang Oanh Thi
Published: January 2021

Apart from the large revenue, the textile industry in general and the dyeing process in particular are releasing huge amounts of wastewater that pollutes the environment and adversely affects human health. Treatment of this type of wastewater by coagulation and flocculation process requires lots of synthetic chemicals, implying a chemical hazard. Thus, this study evaluated the efficacy of mucilage extracted from the peel of dragon fruit (Hylocereus undatus) towards partly substitution of Poly Aluminium Chloride (PAC) used in coagulation and flocculation process for removal of turbidity and other pollutants from disperse black dye wastewater. The effects of pH, settling time, coagulant dosage and mucilage dosage on removal of turbidity, chemical oxygen demand (COD) and color, etc. were analyzed based on Jar-tests. The results showed that the addition of mucilage at 10 mg/L after PAC at 245 mg/L under optimal pH 7 and settling time 40 minutes removed turbidity up to 94.92%. The amount of PAC used was 3-10% less compared to total PAC needed for obtaining equal efficiency when used alone. The pollutant removal by mucilage was also comparable to Polyacrylamide (PAM) – a synthetically organic flocculants.
IMMOBILIZATION OF EXCHANGEABLE CROMIUM IN A CONTAMINATED SOIL USING NATURAL ZEOLITE AS AN EFFECTIVE ADSORBENT
Authors: Dang Van Minh , Van Huu Tap , Nguyen Thi Bich Hanh , Nguyen Dinh Vinh , Nguyen Thị Tuyet , Tran Thi Ngoc Ha , Hoang Trung Kien , Tran Thị Pha , Dam Ha Luong Thanh , Duong Thi Minh Hoa , Nhuong Manh Nhuong
Published: January 2021

This work investigated the effects of soil pH and the content ratio of natural zeolite on Cr contaminated soil. The immobilization experiments of the exchangeable Cr in contaminated soils were conducted using the batch method. The incubation experiments were carried out over 30 days in plastic bottles to determine five fraction of Cr existence (exchangeable fraction (F1), Fe/Mn/Oxide (F2), carbonate bound (F3), organic matters (F4) and residual (F5)) in amended soils after incubation. Results showed that the content and proportion of the exchangeable Cr decreased with an increase in soil pH from 5 to 9. At soil pH 5, the exchangeable Cr in soil reduced from 44.80±0.772 mg/kg (initial soil) to 17.72±0.300 mg/kg after 30 days of incubation with natural Zeolite 3%. Meanwhile, the exchangeable Cr of soil also decreased with increasing the content ratio of natural zeolite from 1% to 5% in soil. The ratio of 3% was suitable for incubation of the exchangeable Cr in contaminated soil with natural zeolite. The exchangeable Cr in contaminated soil decreased from 80.34% at un-amended soil treatment to 25.06% after incubation of 30 days. The forms of carbonate bound (F3) and organic matters (F4) in amended soils increased to 36.54% and 28% compared with 4.26% and 6.90% in un-amended contaminated soil. Ion exchange, precipitation and adsorption on the surface of natural zeolite  might be the potential mechanisms of immobilization of the exchangeable Cr. The results indicated that natural zeolite can be used as the effective adsorbent for immobilizing the exchangeable Cr in contaminated soils and leading to a decrease in the environmental risk from Cr toxicity.
Growth and metal removal efficiency of the green algae Schroederia setigera and Selenastrum bibraianum exposed to nickel, zinc and cadmium
Authors: Son Dao Thanh , Nguyen Van Tai , Vo Thuy Nhu Quynh , Tran Vinh Quang , Vo Thi My Chi , Bui Thi Nhu Phuong , Trinh Bao Son
Published: January 2021

Heavy metal contamination is among the globally environmental and ecological concerns. In this study we assessed the development of the two green algae Schroederia setigera and Selenastrum bibraianum under exposures to 5 – 200 µg/L of Ni, Zn, and Cd in the laboratory conditions. Heavy metal removal efficiency of S. setigera was also tested in 537 µg Ni/L, 734 µg Zn/L, and 858 µg Cd/L. We found that the exposures with these heavy metals caused inhibitory on the growth of S. bibraianum. The S. bibraianum cell size in the 200 µg Zn/L treatment was around two times smaller than the control. However, Zn and Cd at the concentration of 200 µg/L did not inhibit the growth of S. setigera over 18 days of exposure. The S. setigera also grew well during 8 days exposed to Ni at the same concentration. Besides, the alga S. setigera could remove 66% of Zn, 18% of Cd and 12% of Ni out of the test medium after 16 days of incubation. The Vietnam Technical Regulation related to metals should be considered for ecological protection. We recommend to test the metal removal by the alga S. setigera at pilot scale prior to apply it in situ
DETERMINATION OF CYCLAMATE CONTENT IN SOME FOOD PRODUCTS USING UPLC-MS/MS
Authors: Nguyen Ha Thi , Nguyen Nu Bich , Ngo Anh Van , Nguyen Khai Manh , Nguyen Hung Kieu
Published: January 2021

Additives used in food pose a risk to consumers' health, and cyclamate is one of the chemical sugars. In this study, cyclamate content in 38 food samples including beverage, cake, candy, milk, and juice was analyzed using Ultra-Performance Liquid Chromatography, Tandem Mass Spectrometry (UPLC-MS/MS). The optimal parameters of detector MS/MS for anion mode; the liquid chromatography column UPHR(R) BEH C18 2.1x100mm 1.7μm, waters, USA; mobile phase: MeOH:H2O (50:50) including 1% HCOOH, deionized water. The ultimate test sample which passed 0.2 μm membrane filter results in retention time: 4.05 minutes, and flow rate of 0.2 mL/min. The quantitative and confirmable ions are 79.7 and 177.9 m/z, respectively. Under the optimum conditions the calibration curve for cyclamate was linear in the range of 5-100 mg/L m with R2= 0.9955, LOD 2.92 mg/kg; LOQ 9.72 mg/kg, bias found 0.015 %, RSD 0.22; recovery ranged 83.38 to 93.40%. The results showed that 23/38 food product samples from markets and supermarkets in Hanoi city contained cyclamate, accounting for 62.53%, with concentrations ranging from 10.9 to 178.1 mg/kg. However, the content of cyclamate in all samples have met the standards as regulated in Circular No. 08/2015/TT-BYT. In addition, cake and candy samples used cyclamate more frequently compare to other analyzed food types.
Synthesis and investigation of a novel nanocomposite for improved solar radiation absorbance of MD membranes
Authors: Nguyen Kim Thanh , Duong Hung Cong , Tran Lan Thi Thu
Published: January 2021

Membrane distillation (MD) has emerged as a promising technology for seawater desalination to provide drinking water. The most considerable advantage of MD is the capacity to utilize thermal energy to reduce the energy cost of the solar-driven MD seawater desalination systems. However, limited thermal efficiency is one of the key challenges that prevent the wide application of MD for seawater desalination. Due to low thermal efficiency, most solar-driven MD systems require large and complex arrays of solar thermal collectors, leading to the significantly high investment costs of the MD systems. MD membranes coated with solar radiation absorbing materials have been proposed for the solar-driven MD process to obviate the need for large arrays of solar thermal collectors. In this study, we synthesized a novel black spinel-carbon nanocomposite for MD membrane coating to improve the solar radiation absorbance of the membrane, thus enhancing thermal efficiency of the MD system. The preliminary experimental results demonstrated that the black spinel-carbon nanocomposite could absorb light at a wider wavelength range from visible to far-red; therefore, they exhibited increased solar radiation absorbance and hence heating efficiency compared with single materials.
Modal analysis of cracked tower crane with an experimental validation
Authors: Trong Dang Xuan , Toan Le Khanh , Ngoc Ha Thanh , Khiem Nguyen Tien
Published: January 2021

In this paper, dynamic stiffness model of a cracked frame structure that represents a planar tower crane is established in an explicit form based on general solution of cracked 2D-beam element vibration. The crack is modeled by a pair of equivalent springs of stiffness calculated from the crack depth. An explicit form of frequency equation is first established and then solved for numerical sensitivity analysis of natural frequencies of the structure to cracks. An experimental study is accomplished to validate the theoretical development
Phenomenology of the Other. Paul Ricœur and Emmanuel Lévinas’ attitude towards the ontology of Totality
Authors: Warmbier Adriana
Published: January 2021

The aim of this paper is to present Ricœur’s and Lé vinas’s approach to the concept of selfhood (French soi) as a response to the dispute over subjectivity which was initiated by the critics of modern tradition of the absolutization of Cartesian cogito. The debate on the notion of selfhood has not been closed yet. The author analyses two diff erent approaches to the problem. One appeals to the Hegelian dialectic, adjusting it to the formula “oneself as another” (discounting that part of the dialectical movement in which Hegel jumps to a vision of absolute knowledge). The other refers to the category of substitution. Both Ricœur and Lé vinas point to the Platonic opposition of the notions of “the Same” and “the Other.” Ricœur’s initial claim breaks with the established language of ontology. Moving beyond the circle of sameness-identity towards the dialectic of sameness- and selfhood-identity entails the transformation of the notion of otherness: it is no longer an antonym of “same,” but it is a kind of otherness that is constitutive of selfhood.
Temperance and prudence as virtues of an effective altruist
Authors: Synowiec Jakub
Published: January 2021

The aim of the paper is to analyze the importance of two virtues: temperance and prudence for genesis of the Effective Altruism and practice of life of effective altruists, on the basis of philosophical works of two main representatives of the idea and movement: Peter Singer and William MacAskill. In the first part of the paper genesis of the movement and its basic assumptions are presented. Then, the paper focuses on the role of temperance and prudence in both theoretical refl ection on effective altruism and practice of life of people identifying themselves with the movement, with reference to Aristotle’s understanding of the virtues. It is argued, that these virtues are crucial in the practice of life of an effective altruist. In the last part the paper focuses on the idea that Effective Altruism is in a sense an alternative to consumerism and can play a role in bringing mentioned virtues back into public life.
Detection of Intruders and Flooding in VoIP using IDS, Jacobson Fast and Hellinger Distance Algorithms
Authors: Rahul A. , kumar B. Suresh , Prashanth S.K.
Published: January 2021

VoIP services are becoming increasingly a big competition to existing telephony services (PSTN). Hence, the need arises to protect VoIP services from all kinds of attacks that target network bandwidth, server capacity or server architectural constrains. SIP Protocol is used for VoIP connection establishment. It works based on either TCP or UDP Protocols. This protocol structure is almost as same as HTTP Protocol, i.e. for every request there will be some response, even though the request is invalid. HTTP Protocol is prone to flooding attacks, like SYN-Flood attack. Because of Session Initiation Protocol (SIP) is same as HTTP, SIP is also prone to Flooding attacks. The proposed Intrusion Detection System (IDS) is used to detect the intruders in telephony system. Genetic algorithm is used to recognize the authorized user. VoIP Flood Detection System (VFDS) is aimed to detect TCP Flooding attacks and SIP Flooding attacks on SIP devices using Jacobian Fast and Hellinger distance algorithms. The Jacobian Fast Algorithm fixes the threshold limit and Hellinger distance calculation is a statistical anomaly based algorithm uses to detect deviation in traffic
Reaction of jaboticaba trees cv. ‘Sabará’ to the species of gall forming nematodes
Authors: Marques Mônica Lau Silva , Jesus Jéssica Maria Israel de , Oliveira Marcos Fernandes , Texeira Renato Andrade , Santos Patrícia Resplandes Rocha dos , Santos Gil Rodrigues dos , Rocha Mara Rúbia da
Published: January 2021

ABSTRACT Tropical and subtropical fruit production plays an important role in the country’s economic scenario and has been affected by root-knot nematode. The jaboticaba tree is a plant widely cultivated in Brazil, and among the problems of the crop is the root-knot nematode of the genus Meloidogyne. This study aimed to evaluate the hostability of jaboticaba tree cv. ‘Sabará’, in different inoculum concentrations of Meloidogyne incognita and Meloidogyne javanica. The inoculum used in the experiment was obtained from the roots of tomato cv. ‘Santa Cruz’. Jaboticaba trees were subjected to inoculation with concentrations of 0, 2000, 4000, and 8000 eggs + juvenile plant-1, for both species of nematodes. The plants of jaboticaba cv. ‘Sabará’ showed resistance concerning the development of M. incognita and M. javanica root-knot nematode with Reproduction Factor (RF) <1.
Performance of prothioconazole solo or added to mancozeb in the control of Asian soybean rust
Authors: Reis Erlei Melo , Zanatta Mateus , Reis Andrea Camargo
Published: January 2021

ABSTRACT The evolution of the reduction in Asian soybean rust (caused by Phakopsora pachyrhizi) control by site-specific fungicides has been reported season after season. In a field experiment, the effect of prothioconazole solo and added to multisite mancozeb was evaluated for rust control. Treatments were evaluated in a factorial design of four prothioconazole doses and three mancozeb doses. In a set of treatments, three applications were performed in one soybean cycle and four applications in another one. The first applications were performed at GS V8, 11 days before rust detection, with 2.56% leaflet incidence, while the other applications were at 12 to 14-day interval. Rust severity was quantified, control was calculated in relation to the unsprayed treatment, and soybean grain yield was estimated as kg/ha. Fifty-one to 61% control was obtained with three sprayings and 68% to 70% control with four sprayings of prothioconazole alone. Over 80% control was obtained with at least 0.3 L/ha prothioconazole + 2.0 kg/ha mancozeb, corresponding to 75 g a.i./ha prothioconazole + 1500 g a.i./ha mancozeb. Reduction in P. pachyrhizi control by the use of the site-specific fungicide alone was confirmed, while the addition of mancozeb can recover the efficacy of the site-specific fungicide.
First report of Rhizoctonia solani Kühn AG 2-2 LP in Zoyzia japonica Steud in Brazil
Authors: Picarelli Maria Aurea Saboya Chiaradia , Patricio Flavia Rodrigues Alves , Harakava Ricardo , Rivas Eliana Borges , Colariccio Addolorata
Published: January 2021

ABSTRACT The use of cultivated grasses in Brazil has grown by 40% between 2010 and 2015, and the species Zoysia japonica Steud, especially the cultivar ‘Esmeralda’, corresponds to 81% of the grass market in the country. The most important disease affecting zoysia grass, known as large patch, is caused by Rhizoctonia solani and occurs in the Brazilian lawns particularly during winter months. The aim of this study was to contribute to the identification and characterization of the anastomosis group of R. solani isolates from lesions typical of large patch collected from ‘Esmeralda’ grass at gardens and golf courses in the states of São Paulo and Bahia, Brazil. All 12 obtained isolates presented dark-brown colonies with aerial mycelial growth, multinucleated hyphae and absence of concentric zonation or sclerotia, and showed their greatest mycelial growth rate at 25°C. In pathogenicity experiments, except three out of R. solani isolates, reduced the growth of zoysia grass. Based on the analysis of sequences of the rDNA-ITS region, the isolates clustered with reference isolates of the anastomosis group AG 2-2 LP. Phylogenetic inference showed that the Brazilian isolates are grouped into two clades that shared the same common ancestral with 96% bootstrap. One of the clades includes only Brazilian isolates while the other one also includes American and Japanese R. solani isolates AG 2-2 LP. This is the first report and characterization of R. solani AG 2-2 LP in zoysiagrass in Brazil.
ORGANIZAÇÃO DO SERVIÇO DE TELECUIDADO FARMACÊUTICO COMO ESTRATÉGIA DE COMBATE À COVID-19 NO RIO GRANDE DO SUL
Authors: Gossenheimer Agnes Nogueira , Rigo Ana Paula , Schneiders Roberto Eduardo
Published: January 2021

RESUMO O Telecuidado Farmacêutico consiste na prestação de serviços farmacêuticos clínicos de forma remota, através da utilização de tecnologias de informação e telecomunicações, tendo o potencial de melhorar resultados em saúde e reduzir os problemas relacionados ao uso de medicamentos. As vantagens adicionais da telefarmácia incluem o custo-benefício, possibilitando o acesso ao serviço de acompanhamento farmacêutico e a possibilidade de atingir pessoas em localidades remotas e em condições de saúde que limitam a mobilidade. Considerando esse novo paradigma de oferta de serviços farmacêuticos, bem como o atual quadro pandêmico causado pelo novo coronavírus 2019 (COVID-19), em 5 de maio de 2020 foi lançado pela Secretaria de Estado da Saúde do Rio Grande do Sul, um programa de implantação do Cuidado Farmacêutico, CUIDAR +, e o primeiro serviço: Telecuidado Farmacêutico. O objetivo deste estudo é apresentar como o serviço de Telecuidado Farmacêutico foi estruturado e ofertado no combate à COVID-19 como uma estratégia emergente. O serviço foi desenvolvido a partir da avaliação das necessidades em saúde dos usuários da Farmácia de Medicamentos Especiais de Porto Alegre e definido por meio de modelagem de serviços. Foi organizado para acompanhar os pacientes com doenças respiratórias crônicas, orientando em relação ao uso correto dos medicamentos, otimizando a adesão ao tratamento e orientando em relação às dúvidas relacionadas à COVID-19.
Generational Gaps: Women, Rural Traditions and Community Networks*
Authors: Bidwell Nicola
Published: January 2021

Abstract Community Networks (CNs) can provide access to telecommunications in low-income rural areas that are excluded by dominant connectivity models. Women and older people often constitute relatively higher proportions of these populations, thus this paper explores interactions between technology, gender and age in three CNs in rural Africa, Latin America and South Asia. All cases are situated both in local governance structures dominated by men, including a tribal authority, indigenous assembly, and a village council; and in collectivist cultures where women are involved in community work but not in decision-making. I generated data about people’s everyday practices and opinions in relation to their local CNs in focus group discussions and interviews of different sorts with 76 men and 60 women, including network initiators, champions, operators, users and non-users. Older women significantly contributed volunteer labour but were less likely to use their CN, for instance because they did do not own/know how to use devices, or because the location of hotspots was unsuited to their daily lives. Meanwhile, younger women frequently used alternatives to the CNs for connectivity and sometimes established their own enterprises in this; which contributed to some older women’s perspectives that younger women were increasingly separated from communal traditions. This has the potential to amplify generational gaps amongst women and patriarchy within CNs. Such divisive potential may be further exacerbated by masculine bias of priorities in global discourse on telecommunications technology and policy, which tends to emphasise certain concerns about access over concerns about power relations embedded in infrastructure.
Objeciones textiles: interferencias y activismo textil-digital
Authors: Cortés-Rico Laura , Pérez-Bustos Tania
Published: January 2021

Resumen En este artículo analizamos tres formas en que la materialidad y el hacer textil artesanal interfieren en la manera en que nos relacionamos con el diseño de tecnologías digitales. Primero, la forma en que lo textil sostiene lo digital, revelando redes de trabajo y cuidado que soportan el diseño de tecnologías. Segundo, los modos en que el hacer textil transforma los lenguajes del diseño en ingeniería, permitiendo que las dimensiones afectivas de éste emerjan. Y tercero la forma en que las temporalidades del hacer textil ralentizan valores de eficiencia y productividad propios de la ingeniería.
Ferenc Molnar, Hungarian Playwright
Authors: Remenyi Joseph
Published: January 2021

Whenever Ferenc Molnar, the Hungarian playwright, is discussed, his name is associated with bons mots, a mondaine psychology, and a kind of sentimentality in which wistfulness and artificial fantasy mingle with love-making rather than with love. The discriminating miss breadth and depth in his plays; they miss the divine law of which Alexander Pope speaks that is “at once the source and end and the test of art.” In the boom years of his greatest popularity in Hungary, it was a criterion of savoir vivre to attend his plays. At times he was severely criticized, but his suavity, his unhampered manner of expression helped the expansion of the theatrical area of Hungary, though he imposed no obligations of deep thinking upon his audiences. His acclaim abroad, of which much was sound and fury, required a re-definition of his place in Hungarian stage-literature with reference to the native drama. The pro and con remarks warrant the conclusion that his universal success was not justified on purely aesthetic grounds. On the other hand, despite his overused technique, it is apparent that by discarding inherited patterns he supplied the theatre of his native land with devices of dramatic expression that were amusing, incalculable, and sometimes artistic. He was unswerving in his theatrical aims, he discovered a new range of possibilities. Hungary never had a Restoration period similar to that of England; however, in some respect, Molnar could be considered a striking example of the polished, dexterous and frivolous violation of patriotic and romantic conventions of the Hungarian stage. As critics pointed out, he himself created a theatrical convention affected by Oscar Wilde, Henri Bataille, Tristan Bernard, Alfred Capus and other western European playwrights, but he also transcended the qualities of his western models and differed from them. In matters of taste the socio-economic stratum that Molnar represented was the upper bourgeoisie, notwithstanding his alleged and true sympathies for underpaid wage earners, or for former human beings, as Maxim Gorkij called homeless vagrants. The quality of his attainments substantiates this classification. Seen against the theatrical horizon of Hungary he differs from traditional playwrights by having his plays built around characters whose main interest was determined by carnal love in its sentimental and ironic aspect, urbanity, cynicism, that is by a carpe diem philosophy in which individual gratifications were the basic impetus of action, and not national, social, or cosmic responsibilities. Molnar had the makings of a cosmopolitan; in fact, the local color of most of his plays is not of decisive importance, though, as Aurel Karpati, the Hungarian critic stated in a panegyric article, Molnar and Budapest develóped at the same time.
“Vision and Design” in Virginia Woolf
Authors: Roberts John Hawley
Published: January 2021

The fact that Roger Fry and Virginia Woolf were friends and colleagues in the realm of art needs no demonstration. Not only were they closely associated for many years as members of “the Bloomsbury Group,” but the Hogarth Press, established by the Woolfs in Tavistock Square, published some of Fry's essays. After Fry's death in 1934, it was Virginia Woolf who, at the request of Fry's sister, became his biographer. This portrait of the critic was undertaken, says Margery Fry in the “Foreword” addressed to Mrs. Woolf, as a result of “one of those discussions upon the methods of the arts which illuminated his long and happy friendship with you.”
Real-time taxi demand prediction using recurrent neural network
Authors: Ku Donggyun , Na Sungyong , Kim Jooyoung , Lee Seungjae
Published: January 2021

The study aims to predict the location of taxi users, based on an algorithm that was built using a map learning method, which is one of the techniques of deep learning. As the location data of taxi riders showed sequential characteristics over time, learning was performed using a recurrent neural network, which is suitable for predicting dynamic changes over time. The main data used in the analysis were the Seoul Metropolitan Government's taxi tachometer data. These data were collected over a span of six months, from February 2018 to July 2018. Seoul Metropolitan Government's building data and Seoul public transportation smart card data were used as secondary data sources to reflect taxi traffic characteristics. Deep learning results were reviewed using different accuracy values based on combinations of the data sources, such as taxi data only, taxi data and building data and taxi data and smart card data. As a result, the algorithm was able to accurately obtain the distribution of taxi passengers’ boarding positions compared to the actual taxi riding pattern through statistical analysis. On the basis of these predictions, the asymmetric characteristics of taxi traffic in terms of transport planning and management can be solved.
Seismic reliability assessment of steel moment-resisting frames using Bayes estimators
Authors: Mohsenian Vahid , Hajirasouliha Iman , Filizadeh Reza
Published: January 2021

The aim of this study was to develop an efficient probability-based seismic fragility assessment method for steel moment-resisting frames (MRFs). In this method, Bayes estimators are used to improve the accuracy of the results based on new analyses or experimental observations. The efficiency of Bayes estimators in the updating process of fragility curves is demonstrated based on the results of incremental dynamic analysis of three-, five- and seven-storey steel MRFs under a set of 40 spectrum-compatible earthquake ground motions. The results indicate that the constant-hazard-level (engineering demand parameter based) fragility analysis approach leads to less than 6% error in the prediction of performance levels and therefore can be considered a competent alternative to the more computationally expensive constant-performance (intensity measure based) approach. While the earthquake duration can considerably affect the results of fragility analysis, the prediction errors can be reduced to an acceptable level through selection of four different time intervals with at least three records in each group. It is also concluded that Bayes estimators can generally provide a very good level of accuracy in updating fragility curves by reducing the maximum errors to less than 2.5% compared with the exact values.
Perioperative glucocorticoid management based on current evidence
Authors: Seo Kwon Hui
Published: January 2021

Glucocorticoid preparations, adreno-cortical steroids, with strong anti-inflammatory and immunosuppressive effects, are widely used for treating various diseases. The number of patients exposed to steroid therapy prior to surgery is increasing. When these patients present for surgery, the anesthesiologist must decide whether to administer perioperative steroid supplementation. Stress-dose glucocorticoid administration is required during the perioperative period because of the possibility of failure of cortisol secretion to cope with the increased cortisol requirement due to surgical stress, adrenal insufficiency, hemodynamic instability, and the possibility of adrenal crisis. Therefore, glucocorticoids should be supplemented at the same level as that of normal physiological response to surgical stress by evaluating the invasiveness of surgery and inhibition of the hypothalamus-pituitary-adrenal axis. Various textbooks and research articles recommend the stress-dose of glucocorticoids during perioperative periods. It has been commonly suggested that glucocorticoids should be administered in an amount equivalent to about 100 mg of cortisol for major surgery because it induces approximately 5 times the normal secretion. However, more studies, with appropriate power, regarding the administration of stress-dose glucocorticoids are still required, and evaluation of patients with possible adrenal insufficiency and appropriate glucocorticoid administration based on surgical stress will help improve the prognosis.
El proceso lector: implicaciones y contribuciones de la neurociencia y la neuroeducación
Authors: Fernández Domínguez Juan José
Published: January 2021

El presente artículo, sumerge al lector en el análisis descriptivo de las principales características del comportamiento, funcionalidad y actividad cerebral humana durante la lectura, gracias a los conocimientos ofrecidos por la neurociencia. Se inicia dando a conocer los aspectos más relevantes de la neurociencia, tratando seguidamente, la implicación de la misma en el ámbito educativo mediante la neuroeducación y la neurodidáctica. Asimismo, se expone detalladamente el proceso de aprendizaje lector, vías de acceso y procesos cognitivos involucrados. Se continúa, con la exposición de las áreas lectoras, y en última instancia, se explica cómo se produce la lectura. A modo de conclusión, se presentan diversas implicaciones de la neurociencia en el tratamiento educativo de la enseñanza y aprendizaje de la lectura. En definitiva, se refleja la forma en la que la neurociencia pone de manifiesto las posibilidades del cerebro humano en las tareas lectoras, y la capacidad de esta ciencia para trabajar junto a las ciencias educativas y así, mejorar diversos procesos de aprendizaje.
Realisation of mammography screening in Khanty-Mansiysk Autonomous State – Yugra
Authors: Belaya Ju. A. , Zakharova N. A. , Brentnall A. R.
Published: January 2021

Objective: to perform a retrospective analysis of the quality of mammography screening in Khanty-Mansiysk State Region – Yugra from its beginning to 2018 inclusive.

Materials and methods. During this investigation a throughout analysis of epidemiological indicators (breast cancer mortality and morbidity), quality indicators (coverage of the target population, cancer detection in general and early detection, sensitivity and morbidity) and mammographic screening performance indicators (projected and observed morbidity and mortality) was carried out.

Results and conclusions. During this period, 572,348 women were screened, 9.7 % of whom were recommended for further screening. The coverage of the target population for one round was 33 %. Screening test sensitivity for the specified period was 80 %. The observed number of women with newly detected breast cancer cases of stage I in 2018 made 42 % (53 cases) higher in comparison with expected numbers, and in stage T2+ it made 21 % (62 cases) less. The observed number of deaths in 2018 was 23.7 % lower than expected. The above-mentioned demonstrates once again that mammography screening in Khanty-Mansiysk State Region – Yugra has led to the improvement of early diagnosis of breast cancer. This, in turn, leads to a steady decline in breast cancer mortality among women over 40 years of age.
Masculinity of a Proletarian: Media Representations of Male Daily and Leisure Activities of the 1920–1930s
Authors: Khamedova Olga
Published: January 2021

The article analyzes the male daily and leisure activities among the Ukrainian workers, reflected in the press of the 1920–1930s. The objective of the article is to study the specifics of media representations of male daily and leisure activities and to determine the features of modeling the normative masculinity of a proletarian in the 1920s and 1930s.

Research results. Based on the analysis, the conclusions are drawn about the normative masculinity of the Soviet proletarian of the 1920–1930s, reflected in Ukrainian newspapers and magazines. The Soviet construct of masculinity consisted of two models – ideal and real. According to the journalists of that time an exemplary proletarian was a physically strong man, certainly a Komsomol member or communist, capable of performing the labor, sports and / or military heroic acts for the sake of party and homeland. The propaganda of physical education and sport had military connotation, because sports organizations were entrusted with the task of preparing the men for a future war with the capitalist countries. Some forms of cultural recreation were popularized in the press: visits to work and other clubs, libraries, non-alcoholic picnics in nature etc.

However the journalists of the 1920s and the early 1930s designed also another, more reliable model of the proletarian, through reflection of social reality and everyday context of working life. The daily and leisure activities formed the proletarian life style, which included alcohol abuse, primitive habits in everyday life, gambling, etc. Сonclusions. In the Ukrainian Soviet press of the 1920s, two versions of normative masculinity of the proletarian coexisted – official and popular. In the 1920s, a lot of critical materials appeared in the Ukrainian press regarding the life and leisure activities of proletarians. But in the 1930s, such reports almost disappeared from the newspapers, and embellishment of reality and mass dissemination of the ideal proletarian image, ready for labor exploits and defense of the fatherland from capitalist enemies, became a general tendency.

Significance. In the modern media studies one of the key points is that media texts form social identity and subjectivity. The study of interconnections and interactions within the framework of the paradigm media – ideology – society is important and promising area, including the historical aspect.
Perspectives System Transformation and Development Issues
Authors: Nosova Olga
Published: January 2021

The article aims to study and analyzes the political and social –economic changes in the process of system transformation. The paper represents an attempt to understand the content of system transformation, causes of successful and inefficient practices, and proposes recommendations for its improvement. The hypothesis of the study is to estimate how the vector development depends on the degree of economic, political, social transformation, as well as the overall indicators (market and democratic) transformation. The study discusses the concepts systemic transformation, describes types of transformation, proposes classification of basic approaches, determines the impact of transformational changes on economic growth in a country, and analyzes the vector development relationship from transformational changes, defines contributing and slowing down factors.
Human Emotional State Assessment Based on a Video Portrayal
Authors: Barabanschikov V.A. , Suvorova E.V.
Published: January 2021

The article is devoted to the results of approbation of the Geneva Emotion Recognition Test (GERT), a Swiss method for assessing dynamic emotional states, on Russian sample. Identification accuracy and the categorical fields’ structure of emotional expressions of a “living” face are analysed. Similarities and differences in the perception of affective groups of dynamic emotions in the Russian and Swiss samples are considered. A number of patterns of recognition of multi-modal expressions with changes in valence and arousal of emotions are described. Differences in the perception of dynamics and statics of emotional expressions are revealed. GERT method confirmed it’s high potential for solving a wide range of academic and applied problems.
Perception of Parental Assessments of Appearance in Connection with Concern among High School Students
Authors: Drozdova I.I. , Serikov G.V.
Published: January 2021

The article is devoted to the role of physical appearance (PA) parental assessments in the formation of PA concern in youth. Analysis of the works done earlier in this field showed an insufficiency of empirical researches in Russian social psychology devoted to the PA concern among high school students in connection with their ideas about parents’ evaluation of their PA. The results of the empirical research on this problem are presented (112 male and female respondents, 16—17 years old). We tested the hypothesis of the significant differences presence in the perceptions of PA estimates by parents among high school students with varying degrees of PA concern. Diagnostic techniques: «Concern» scale of the «Attitude to one’s appearance» questionnaire; the method of «Estimating and meaningful interpretation of the appearance» (V.A. Labunskaya). Significant differences were revealed in the views of high school students about their PA assessment by parents. In the group of respondents with the high degree of PA concern dominated the opinion that their fathers did not highly appreciate a number of their PA components and characteristics, namely: face and physique; decor; the attractiveness of design for the opposite sex, and as to mothers — they do not highly appreciate PA design.
Onychomycosis as a Chronic Superficial Fungal Infection:
"Why is it so Hard to Clear?"
Authors: Seo Ji-In , Shin Min-Kyung
Published: January 2021

Onychomycosis is a fungal infection of the nail unit. Compared to other superficial dermatophytoses of the skin and hair, onychomycosis is associated with a chronic course and frequent recurrence. Originally, structural characteristics of the nail, such as poor vascular supply and thick layers of hard keratin, were thought to be limiting
factors for efficient drug delivery, resulting in prolonged treatment. However, recent research reveals the following crucial mechanisms contributing to the chronicity of nail dermatophytosis: innate characteristics of Trichophyton rubrum, formation of dormant spores called arthroconidia, physical and immunologic characteristics of the nail
apparatus, and alteration of the defense system of the host. T. rubrum, the most common causative fungal pathogen for onychomycosis, acquires selective immune tolerance toward the host's defense system. Transformation into dormant phases, such as arthroconidia, creates greater resistance to antifungal medication and nonnutritive
environments. The anatomical and biological structures of the nail allow immune evasion, increase infection susceptibility, and promote biofilm formation. Key regulators of the host's innate and adaptive immune systems are downregulated as infection persists, and age-associated immunomodulation aggravates the process.
Pneumonia with Empyema Caused by Cladosporium velox
in a Patient with Rheumatoid Arthritis
Authors: Lee Yu-Mi , Cho Sung-Yeon , Park Ki-Ho , Lee Mi Suk , Kim Young Jin
Published: January 2021

No cases of human infections caused by Cladosporium velox have been reported. A 69-year-old female patient with rheumatoid arthritis developed pneumonia with empyema. The fungal cultures of pleural fluid were obtained. Cladosporium was grown from the pleural fluid. C. velox was identified by internal transcribed spacer sequencing.
The pathologic results of biopsied lung tissue indicated the presence of fungal hyphae. C. velox can cause clinical infection in an immunocompromised setting.
Diversification of Sexual Size Dimorphism in Cyclops vicinus
Authors: BOZKURT Ahmet , CAN Mehmet Fatih
Published: January 2021

The aim of this study was to qualify the sexual size dimorphism at the both inter and intra-population levels of a copepod species, Cyclops vicinus, populations living in a small-scale geographical range. Sexual size dimorphism is evaluated by the ratio of female to male total length. But, to deep insight into sexual size dimorphism we assumed that the more difference between same measurements on the body from different sexes lead to more sexual dimorphism rate. The samples were taken from four water sources locating east and south-east part of Turkey. The significant inter and intra population differences were detected. The thorax width related measurements (mostly) and abdomen length had the most effective ones with changing order in the different populations on the sexual size dimorphism. Pearson correlation coefficients (r) showed that there were strong positive relationships between sexual dimorphism rate and predator presence (r = 0.88) and water volume of lake (r=0.72), while a moderate negative relationship both with water depth (r= -0.50) and with lake area (r= -0.45).
An Exploration into the Pedagogical Benefits of Using Social Media: Can Educators Incorporate Social Media into Pedagogy Successfully?
Authors: Williams Ryan Thomas
Published: January 2021

Many social networking sites have been thought to break down traditional hierarchies in terms of society and global geography (Lewis 2017). As an example, Twitter empowers learners to engage with individuals from all over the world, often sharing educational resources for free. This ‘work in progress’ paper adopts a mixed-methods model to explore if social media can be incorporated successfully with pedagogy. In total, 431 participants took part in this study. Of those, 411 completed the survey, and 20 were subjects in the interviews. Teachers described professional reasons and social reasons why they do not use social media regularly in their pedagogy. One emerging theme is that CPD appears to be underdeveloped in this area, as teachers report that TEL training focuses on administrative uses of a product rather than pedagogical benefits. This has implications on how social media could be used as a pedagogical tool and addresses gaps in the literature in this area. This direction of social media in the classroom remains unclear, however, this study aims to offer a framework for educators when using social media strategies.
Concentration Flux Dependent on Radiative MHD Casson Flow with Arrhenius Activation Energy: Homotopy Analysis Method (HAM) with an Evolutionary Algorithm
Authors: Naganthran Kohilavani , Zeeshan Ahmad , Basir Md. Faisal Md. , Shehzad Nasir , Nazar Roslinda , Choudhary Rakesh , Balaji Sankarasubramanian
Published: January 2021

Heat transfer analysis in nanofluids is an active research field due to its extraordinary physical and chemical properties. In the current study, the focus lies on the effects of Stefan blowing when a non-Newtonian Casson base fluid flows over a surface which stretches linearly. A uniform transverse magnetic field is employed. The chemical reaction in the fluid with activation energy and radiation effects have also been engaging the attention. Fundamental laws of conservation are employed to model governing equations of flow. Similarity transform is introduced to reduce the said system of partial differential equations to ordinary differential equations which are in turn tackled analytically using Homotopy Analysis Method with genetic algorithms to optimise the series solution. The impact of pertaining parameters on the dimensionless velocity, temperature and concentration were presented explicitly. This study relevant to remedies for malign tissues, cells or clogged arteries of the heart.
Simulação numérica de ventiladores centrífugos com variação do tipo da voluta: normal e com reentrância
Authors: Toledo Gabriela Pereira , Rosa Henrique Márcio Pereira
Published: January 2021

Ventiladores centrífugos são máquinas amplamente utilizadas em diversos setores da indústria. Devido sua importância e ao fato de o uso de energia elétrica ser uma preocupação nos dias atuais, a busca por melhores rendimentos nestas máquinas faz-se necessário. O objetivo é avaliar a influência do tipo da voluta, normal e com reentrância, no rendimento de ventiladores centrífugos por meio de simulação numérica por técnicas de CFD. O estudo comparativo entre estes dois tipos de volutas ainda é escasso. Para cada tipo de voluta, variou-se a vazão mássica de saída, e, assim, montou-se as curvas diferença de pressão e rendimento. Também foram analisadas as distribuições de pressão e velocidades. Os resultados indicaram uma superioridade da voluta normal.
Naczelny Sąd Administracyjny wobec reformy sądownictwa 2015–2019 – zagadnienia wybrane
Authors: Michalak Anna
Published: January 2021

Lata 2015–2019 – okres pierwszych rządów koalicji pod przewodnictwem partii Prawa i Sprawiedliwości (PiS) – przyniósł szereg zmian legislacyjnych dotyczących wymiaru sprawiedliwości czy szerzej sądownictwa. Począwszy od szeregu nowelizacji i nowych ustaw uchwalonych w latach 2015–2016 zmieniających organizację i tryb funkcjonowania Trybunału Konstytucyjnego, rząd dokonał także połączenia urzędu Prokuratora Generalnego i Ministra Sprawiedliwości, zreformował Krajową Radę Sądownictwa, wprowadzając nowy (a przy tym wątpliwy konstytucyjnie) tryb powoływania jej członków, a także zreformował Sąd Najwyższy (ustanawiając dwie nowe izby). Wszystkie zmiany budziły i nadal budzą wątpliwości co do ich zgodności z Konstytucją i prawem UE. Celem artykułu jest podsumowanie wypowiedzi orzeczniczych Naczelnego Sądu Administracyjnego, w sprawach stanowiących konsekwencję zmian legislacyjnych wprowadzanych przez rząd PiS w latach 2015–2019. Publikacja uwzględnia orzecznictwo NSA do dnia 31 grudnia 2019 r. i omawia stanowisko NSA w odniesieniu do trzech kwestii: prawa żądania – w trybie dostępu do informacji publicznej – udostępnienia list poparcia kandydatów dla nowo powołanej KRS; możliwości wnoszenia odwołań do NSA w sprawach indywidualnych dotyczących powołania do pełnienia urzędu na stanowisku sędziego SN; uprawnienia do orzekania przez sędziego powołanego na wniosek KRS w obecnym składzie.
Latinx Sexual Minority Men's Behavioral, Psychosocial, and Medical Experiences During COVID-19: Differences Across Immigration Statuses
Authors: Harkness Audrey , Weinstein Elliott R. , Mayo Daniel , Rodriguez-Diaz Carlos , Safren Steven A.
Published: January 2021

Latinx sexual minority men (LSMM) are at the intersection of two communities disproportionately impacted by COVID-19. To develop and deploy appropriate resources to support LSMM, it is important to understand the behavioral, psychosocial, and medical experiences of this population during COVID-19, as well as for LSMM of different immigration statuses. The current study uses the Pandemic Stress Index (PSI) to describe LSMM's self-reported behavioral, psychosocial, and medical experiences during COVID-19. Logistic and linear regressions compared experiences during COVID-19 among LSMM across different immigration statuses (recent, established, and U.S.-born as the reference group). LSMM's responses to the PSI indicated they experienced anxiety (64.4%), depression (59.0%), alcohol/substance use (27.6%), as well as loneliness (50.1%) and sleep problems (60.4%). Overall, over half reported personal financial loss, the odds of which were 2.75 times greater among LSMM who were recent immigrants compared to U.S.-born LSMM (odds ratio [OR] = 2.75, 95% confidence interval [CI]: 1.30, 5.82). Nearly 8% reported being diagnosed with COVID-19, with the odds four and a half times greater among established immigrants compared to US-born LSMM (OR = 4.52, 95% CI: 1.60, 12.81). The findings have implications for tailored support resources and public health interventions to reach LSMM in general and LSMM with immigration histories.