bluuebunny/crossref_metadata_2025 huggingface dataset:
Voyeurism and erotic stereotypes in fashion photography: Modernity and postmodernity from the Countess of Castiglione to Helmut Newton
Authors: Muzzarelli Federica
Published: June 2021

Voyeurism and desire are drives linked ontologically to the identity of the photographic and fashion system. Photographing someone is always an act of voyeuristic possession of something that belongs to another, or at least to the surrounding reality that one seeks to – fetishistically – appropriate. But the voyeuristic exercise of photography lives and is nourished by stimulating the exhibitionism of what is in front of the machine’s lens, thus completing and giving meaning to each other. When the context being photographed is fashion, the conditions of insistent voyeurism and intense desire (of emulation, projection, appropriation) become one with the very meaning of the image. In fact, moving from behaviour to the object, most of fashion’s photographic tradition can be traced back to an atmosphere of soft winking and erotic fantasy of the look. In this article, we take into consideration two well-known events that are generically associated with voyeurism and eroticism of the photographic image and fashion, reading them as a parable of the history of the male gaze of women’s bodies: from the triumph of the stereotype in the modern age to its sudden upheaval in the postmodern age. The first case is that of the Countess of Castiglione, who from the mid-nineteenth century was already able to demonstrate how photography could solidify male erotic imagery and, in so doing, present fashion as the style and attitude of an era. In contrast, we find Helmut Newton, famous and acclaimed fashion photographer and exceptional interpreter of the excesses of the eighties, able to bring that male erotic imagery to such exaggerations in the use of codes to make it almost harmless, cooling it.
Fashioning China: Precarious Creativity and Women Designers in Shanzhai Culture, Sara Liao (2020)
Authors: Anders Ellen
Published: June 2021

Review of: Fashioning China: Precarious Creativity and Women Designers in Shanzhai Culture, Sara Liao (2020)

London: Pluto Press Publishing, 244 pp.,

ISBN 978-0-74534-070-8, p/bk, $40.00
Il ‘gioco di telefono’: The posthuman and cellular technology in Paolo Genovese’s Perfect Strangers
Authors: Varade Kristina
Published: June 2021

This article offers new perspectives on the telephone in Italian cinema, specifically in the movement from the human to the posthuman vis-à-vis visual representation. Telecommunication has maintained a unique place in Italian cinema throughout the twentieth and twenty-first centuries and provides insight into the anxiety of both the socio-economic status and of the human subject itself. From Roberto Rossellini’s The Human Voice to Paolo Genovese’s Perfect Strangers, the telephone acts as a key protagonist articulating the crisis of human subjectivity with respect to ever-increasing technological influence. Not only is the telephone an ‘actor’ in the Italian film tradition, but its function as both a means and an arbitrator of communication exerts control over the course of human action. As both a nonhuman object and physical/mental influencer, the telephone facilitates the transition from the human to the posthuman, informing our understanding of nonhuman technological agency in our daily lives.
‘Waving through a window’: Nostalgia and prosthetic memory in Dear Evan Hansen
Authors: Barr Lindsey R.
Published: June 2021

Dear Evan Hansen, a popular Broadway musical whose narrative centres on connectivity and the protagonist’s social anxiety, offers a disruptive potential to the otherwise standard nostalgic leanings of the contemporary American musical. Operating dramaturgically, nostalgia offers the audience an opportunity to recall an idealized past that imbues the musical they are witnessing with their own positive affect. Dear Evan Hansen’s use of prosthetic memory disrupts the nostalgic tradition of the contemporary musical. Using dramaturgical analysis to identify the narrative operation of nostalgia and prosthetic memory, this article situates the disruptive potential of Dear Evan Hansen as an intervention into the American musical theatre canon writ large.
‘Look at Me’, I’m femininity: The female persona in 1970s musical theatre
Authors: Lampe Samantha
Published: June 2021

As the Women’s Liberation Movement developed in the 1970s, women challenged society’s limited female representation as either the Madonna or the whore. Musicals in the 1970s, including Grease (1972), Chicago (1975) and Evita (1979), complicated the female image through the juxtaposition of feminine stereotypes in the heroine’s persona. With each of the shows centralizing the plot around analysing the contradictory feminine image, the women perform in both public and private settings, along with other characters critiquing their personas. From feminist protesters to the writings of Simone de Beauvoir and Betty Friedan, Sandy, Roxie and Eva reflect the requests of contemporary women to display their gender as something beyond the perceived dichotomy of Madonna or whore in their music performances.
Aproximación a los problemas en la vista y el uso de anteojos en el burgos de mediados del XVIII
Authors: Sanz De La Higuera Francisco J.
Published: June 2021

En el Burgos de mediados del siglo XVIII, la posesión de «anteojos» estaba circunscrita a un reducido número de hogares. Únicamente en el 5.7 % de los inventarios post-mortem se mencionan dichos pertrechos oculares, porcentaje que se eleva hasta el 16.9 % en las viviendas de los clérigos y a un 10.3 % en las casas de los nobles rentistas. La posesión de «anteojos» era en el Antiguo Régimen un acontecimiento excepcional, un producto de lujo, y aún exótico, aunque sus módicos precios, la oferta existente en las tiendas de la ciudad y el dinero líquido atesorado en las casas de la ciudad, los hacía relativamente asequibles. Empero, y por contraste, el Catastro de Ensenada nos brinda el conocimiento de múltiples casos de ceguera y graves disfunciones oculares, patologías de las que estaban aquejados, en su inmensa mayoría, hogares de hilanderas, pobres de solemnidad, jornaleros, labradores y artesanos, es decir, las categorías socio-profesionales más analfabetas, paupérrimas y alojadas en la estrechez, para las cuales, en ningún caso, hemos encontrado, en sus inventarios post-mortem, ningún anteojo por modesto que fuera.
Antecedentes y constitución de la primera sociedad filarmónica salmantina a través de la prensa local (1907-1910)
Authors: Álvarez García Francisco José
Published: June 2021

Salamanca, al igual que otras capitales de provincia a comienzos del S. XX, siente la necesidad, llevada de la mano de intelectuales y miembros de la más alta sociedad del momento, de crear una Sociedad Filarmónica que se convierta en referente músico-cultural dentro de panorama artístico local. En el presente artículo se presentan los antecedentes de la propia creación de la Sociedad así como la gestación y elaboración de los primeros estatutos tras su fundación.
Historia de una publicación periódica: el caso de la revista Dragón (edición norteamericana)
Authors: Sevillano Pareja Héctor
Published: June 2021

El presente trabajo analizamos la historia y el desarrollo de una publicación periódica, desde su nacimiento, en versión papel, hasta su transformación en versión electrónica. Para dicho análisis nos hemos fijado en la Revista Dragón, que ha sido la revista sobre juegos de rol más importante editada hasta la fecha, especialmente en lo concerniente al primer juego de rol comercial, Dungeons & Dragons.
The effect of job satisfaction, workplace spirituality and organizational commitment on work productivity with organizational citizenship behavior (OCB) as intervening variable (Case study on Bank Muamalat Indonesia KC Solo)
Authors: Ridlo Musalim , Wardahana Ifan Arin , Jessica Kristiani Gracelia
Published: June 2021

The study aims to identify and analyze the influence of job satisfaction, organizational commitment, workplace spirituality on work productivity with Organizational Citizenship Behavior (OCB) as an intervening variable. The population of this study consists of all employees of Muamalat Bank Solo Branch. The data were collected by a questionnaire distributed to 40 employees of Muamalat Bank Solo Branch. This study uses a saturated sample technique or total sampling. The data were analyzed using multiple linear testing and path analysis. The results show that job satisfaction and Organizational Citizenship Behavior (OCB) have a positive and significant effect on employee work productivity, while spirituality at work and organizational commitment has a positive but not significant effect on employee productivity. Simultaneously, it shows that job satisfaction, workplace spirituality, organizational commitment and Organizational Citizenship Behavior (OCB) have a positive and significant effect on employee work productivity. Based on the path analysis test,  job satisfaction, workplace spirituality and organizational commitment have a positive and significant effect on employee work productivity through Organizational Citizenship Behavior (OCB) as an intervening variable.
Reputasi perusahaan keluarga: Accrual dan real earnings management
Authors: Tanusaputra William Sebastian , Eriandani Rizky
Published: June 2021

This study examined the effect of earnings management on reputation in family firms listed on the Indonesia Stock Exchange (ISE). The data were collected from audited financial reports of companies listed on the Indonesia Stock Exchange for 2017-2019. The data were slected by using a purposive sampling towards 264 companies. The data of company reputation comes from the corporate image reward website, and they were analyzed using logistic regression. The results showed there is no effect of accrual earnings management (AEM) on the family firms’ reputation. On the contrary, real earnings management (REM) has a significant negative effect on family firms. This result implies that earnings manipulation by adjusting the company’s operations will result in a bad reputation.
Natural Alpha Emitters in Some Types of Medical of Parenteral Solutions (Domestic and Imported) Samples in Iraqi Hospitals
Authors: Oleiwi Mohanad H. , Ibrahem Salar H. , Abojassim Ali Abid
Published: June 2021

In this research, alpha emitters (222Rn, 226Ra and 238U) were measured by solid state nuclear track detector (LR-115 type 2 detector) in some types of medical of parenteral solutions samples that commonly used in Iraqi hospitals. The results show that the average values of the concentrations for 222Rn (in air space and inside sample), 226Ra, and 238U in samples of the present study were 52.62±9.01 Bq/m3, 0.26±0.04 Bq/L, 0.246±0.04 Bq/L, and 0.232±0.039 ppm, respectively. The average value of alpha emitters was within the acceptable world limitations. Therefore, it may conclude that there is no danger in medical parenteral solutions samples of the present study on human health.
Salmonella enterica serovars associated with bacteremia in Canada, 2006–2019
Authors: Tamber Sandeep , Dougherty Brendan , Nguy Kimberly
Published: June 2021

Background: Members of the bacterial genus Salmonella cause salmonellosis, a disease with a spectrum of clinical presentations from a self-limiting gastroenteritis to more severe bacteremia, organ failure and sepsis. The genus consists of over 2,600 serological variants (serovars). Important differences in the pathogenesis of Salmonella serovars have been noted. Objective: The purpose of this study was to determine which Salmonella serovars were more likely to be associated with bacteremia in Canada. Methods: Information on the total number of Salmonella infections and blood isolations reported to the National Enteric Surveillance Program (NESP) from 2006 to 2019 was extracted for each serovar. The risk (proportion) and likelihood (odds) of bacteremia were calculated for all serovars. Results: Of the 96,082 Salmonella cases reported to the NESP during the 14-year study period, 4.4% (95% CI: 4.3%–4.6%) were bacteremic. Twenty nontyphoidal Salmonella (NTS) serovars were associated with lower rates of bacteremia compared to all NTS serovars, and 19 NTS serovars were identified as having higher rates. Heidelberg, Oranienburg, Schwarzengrund, Virchow, Panama and Poona among the top 25 most commonly reported serovars in Canada during the study period. Conclusion: The identification of serovars associated with Salmonella bacteremia in Canada is a first step towards understanding differences in pathogenesis and disease presentation.
Beyond flu: Trends in respiratory infection outbreaks in Ontario healthcare settings from 2007 to 2017, and implications for non-influenza outbreak management
Authors: Paphitis Katherine , Achonu Camille , Callery Sandra , Gubbay Jonathan , Katz Kevin , Muller Matthew , Sachdeva Herveen , Warshawsky Bryna , Whelan Michael , Garber Gary , Murti Michelle
Published: June 2021

Background: Outbreaks cause significant morbidity and mortality in healthcare settings. Current testing methods can identify specific viral respiratory pathogens, yet the approach to outbreak management remains general. Objectives: Our aim was to examine pathogen-specific trends in respiratory outbreaks, including how attack rates, case fatality rates and outbreak duration differ by pathogen between hospitals and long-term care (LTC) and retirement homes (RH) in Ontario. Methods: Confirmed respiratory outbreaks in Ontario hospitals and LTC/RH reported between September 1, 2007, and August 31, 2017, were extracted from the integrated Public Health Information System (iPHIS). Median attack rates and outbreak duration and overall case fatality rates of pathogen-specific outbreaks were compared in both settings. Results: Over the 10-year surveillance period, 9,870 confirmed respiratory outbreaks were reported in Ontario hospitals and LTC/RH. Influenza was responsible for most outbreaks (32% in LTC/RH, 51% in hospitals), but these outbreaks were shorter and had lower attack rates than most non-influenza outbreaks in either setting. Human metapneumovirus, while uncommon (<4% of outbreaks) had high case fatality rates in both settings. Conclusion: Attack rates and case fatality rates varied by pathogen, as did outbreak duration. Development of specific outbreak management guidance that takes into account pathogen and healthcare setting may be useful to limit the burden of respiratory outbreaks.
Bioaerosols from mouth-breathing: Under-recognized transmissible mode in COVID-19?
Authors: Balasubramanian Saravanakarthikeyan , Vinayachandran Divya
Published: June 2021

The whole world has been affected by the coronavirus disease 2019 (COVID-19) pandemic, and many researchers are racing to understand the disease course and to undertake risk analyses to formulate effective treatment strategies. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is highly transmissible through coughing and sneezing, and through breathing and talking which may account for viral transmission from asymptomatic carriers. Bioaerosols produced during mouth-breathing, an expiratory process in habitual mouth breathers, should be considered in addition to nasal bioparticles as a potential transmissible mode in COVID-19. Oral health professionals are justifiably apprehensive about the exposure risk due to close face-to-face contact and the mode of transmission. The aim of this commentary is to summarize the research conducted in this area and suggested strategies to limit the spread of COVID-19, especially in dental offices.
Le temps signifiant et le Moyen Âge français
Authors: Tarnowski Andrea
Published: June 2021

An analysis of “weather events” and their meaning in works of French medieval literature – La Chanson de Roland, Le Chevalier au lion, Le Roman de la rose, Le Livre du Cuer d’amours espris and Le Debat d’entre le gris et le noir – finds different forms of interaction between the outside world and human beings. Whether a connection between man and nature is mediated by God, set by the human arrangement of or incursion into a natural setting, or left so loose as to suggest nature’s indifference to human witness, weather contributes to the picture.
Le calendrier révolutionnaire de 1793 ou les quatre saisons de la République
Authors: Matyaszewski Paweł
Published: June 2021

The authors of the revolutionary calendar, in particular Gilbert Romme and Fabre d’Églantine not only want to put the past behind by implicating a new time and new order but also try to prove the relation between history and nature using the example of the events of the Revolution and their compliance with the laws of the universe. They introduce an innovative nomenclature in order to specify the names of particular days and months but they do not change the natural four-season model of division. The goal of the presented idea is to enrich the natural cycle with a new content expressing the spirit and the objectives of the Republic while following the laws of nature.
Famiglia cristiana come “Chiesa domestica”: evoluzione storica e prospettive future
Authors: Trębski Młyński , Młyński Józef
Published: June 2021

The family is one of the most basic, yet important gifts that God has given us. The Christian family constitutes a specific revelation on the interior life of God in the Divine Trinity and realization of ecclesial communion, and for this reason it can and should be called the domestic Church, agent and object of the work of evangelization in service to the Kingdom of God.

This article presents an evolution of the concept of domestic Church and tries to indicate its future perspectives. It highlights the many deep ties that bind the Church and the Christian family and establish the family as a domestic Church - “Church in miniature”, so that in its own way the family is a living image/icon and historical representation of the mystery of Church.The little domestic Church, like the greater Church, needs to be constantly and intensely evangelized, which becomes the shared responsibility of all God’s people, each according to his ministry and charism. Without the joyous testimony of married people and families, domestic churches, proclamation, even if done in its proper way, risks being misunderstood or lost in a flurry of words that is characteristic of society today. Catholic families today can build up their own domestic churches and strive to be “islands of Christian life in an unbelieving world” (Catechismo della Chiesa Cattolica 1992, 1655).It should be emphasized that the Church's pastoral intervention in support of the family is an urgent matter. Every effort should be made to strengthen and develop pastoral care for the family, which should be treated as a real matter of priority, in the certainty that future evangelization depends largely on the domestic Church (Giovanni Paolo II. 1981, 65).
Osoby starsze w świecie nowych mediów i technologii
Authors: Gruchoła Małgorzata
Published: June 2021

Celem artykułu była analiza sytuacji i uwarunkowań społeczno-kulturowych osób starszych tworzących pokolenie X w świecie nowych mediów i technologii na tle najmłodszego pokolenia medialnego, czyli pokolenia Alpha. Obecne pokolenie seniorów tworzą pokolenie wojny, międzywojnia, Baby Boomers oraz pokolenie X. Po lapidarnej charakterystyce pokoleń przedstawiłam problem kompetencji medialnych determinujących zjawisko wykluczenia cyfrowego. Kolejno omówiłam trzy jego wymiary: psychologiczny (dostęp motywacyjny), technologiczny (dostęp materialny i fizyczny) oraz społeczny (dostęp kompetencyjny: umiejętności strategiczne, informacyjne, operacyjne i dostęp użytkowy) wraz z przykładami (ubieralne technologie, Internet Rzeczy, roboty humanoidalne) stanowiące obszar wykluczenia cyfrowego. Przyjęta teza, że zgodnie z koncepcją opóźnienia kulturowego Williama Ogburna świat rzeczywisty (społeczno-kulturowy) osób starszych nie nadąża za światem tworzonym i kreowanym przez nowe media i technologie, została potwierdzona. Główną przyczyną, obok braku nawet tylko jednego z czterech rodzajów dostępu, jest różnica prędkości w świecie rzeczywistym i wirtualnym. Zastosowałam metodę historyczną, analityczno-opisową i porównawczą.
Kultszenen – Bankettszenen: Die Akteure und die Paraphernalien
Authors: Braun-Holzinger Eva
Published: June 2021

On numerous images from the Early Dynastic to the Neo-Sumerian period men and women are depicted pouring liquids from special vessels. Clearly defined are two spheres: the human banquet, in which men and women are holding drinking vessel offered to them by their servants, and libation scenes showing cult personnel and other persons pouring a libation before their gods. Handwashing, which would have preceded banquets and libations, does not seem to be represented in visual imagery.
Autonomy in language centres: myth or reality?
Authors: Chateau Anne , Tassinari Maria Giovanna
Published: June 2021

Autonomy in language learning is for many language centres in higher education a pedagogical goal. However, although autonomy is a concept that has been associated with language learning for almost 40 years, both the understanding of that concept and its implementation in classroom-settings and in self-access language centres vary considerably. In 2017 and 2018 the Cercles Focus Group on Autonomy worked on a survey that was circulated among Cercles language centres, in order to discover to what extent autonomy is part of the language curriculum. Approximately one fifth of the language centres answered the questionnaire, representing 18 different countries. The results of this survey show that autonomous learning schemes are provided in various centres in the form of self-access language learning modalities, blended learning, learning advising as support for independent and cooperative learning, tutoring and tandem learning. However, the understanding of the notion of autonomy and therefore the pedagogical practices vary considerably. In this article, we illustrate the results of the survey, highlight similarities and differences emerging from it, and critically reflect upon issues addressed by the answers. In addition, we briefly discuss the results of some interviews conducted after the survey with stakeholders at different language centres. Recommendations for the future conclude the paper.
Kernel Embedding Based Variational Approach for Low-Dimensional Approximation of Dynamical Systems
Authors: Tian Wenchong , Wu Hao
Published: June 2021

Transfer operators such as Perron–Frobenius and Koopman operator play a key role in modeling and analysis of complex dynamical systems, which allow linear representations of nonlinear dynamics by transforming the original state variables to feature spaces.
However, it remains challenging to identify the optimal low-dimensional feature mappings from data.
The variational approach for Markov processes (VAMP) provides a comprehensive framework for the evaluation and optimization of feature mappings based on the variational estimation of modeling errors, but it still suffers from a flawed assumption on the transfer operator and therefore sometimes fails to capture the essential structure of system dynamics.
In this paper, we develop a powerful alternative to VAMP, called kernel embedding based variational approach for dynamical systems (KVAD).
By using the distance measure of functions in the kernel embedding space, KVAD effectively overcomes theoretical and practical limitations of VAMP.
In addition, we develop a data-driven KVAD algorithm for seeking the ideal feature mapping within a subspace spanned by given basis functions, and numerical experiments show that the proposed algorithm can significantly improve the modeling accuracy compared to VAMP.
Coaching strategies in vocational orientation for promoting young women’s self-concept and career aspirations in chemistry
Authors: Hönig Marina , Rüschenpöhler Lilith , Küsel Julian , Markic Silvija
Published: June 2021

Females and students of non-dominant ethnicity are less likely to aspire to science careers. However, overcoming discrimination in science and chemistry is a challenging task, especially in vocational orientation. Thus, there is a need for strategies to support young women in their identity formation in science and chemistry. This article presents a scheme for supporting young women’s science identity formation in conversations about vocational orientation. The goal is to support young women in developing a positive attitude towards careers in chemistry. This attitude is part of cultural chemistry capital. The scheme was developed based on a study conducted as part of the project DiSenSu. Here, coachings for vocational orientation for young women in science and chemistry are provided, following the idea of Science in Public. In the coaching, the attitudes towards science and chemistry were determined using quantitative data. Based on these results, coaches conducted conversations with the participants. Qualitative analysis of 11 conversations revealed strategies coaches used to support young women in their vocational orientation. The study shows how the participants’ attitude towards careers in chemistry is used as a starting point for coachings. Also, it provides strategies that can be used to promote young women’s cultural chemistry capital.
Unsteady MHD natural convection flow of a nanofluid inside an inclined square cavity containing a heated circular obstacle
Authors: Mansour M. A. , Gorla Rama Subba Reddy , Siddiqa Sadia , Rashad A. M. , Salah T.
Published: June 2021

The phenomena of unsteady magnetohydrodynamics (MHD) natural convection flow in an inclined square cavity filled with nanofluid and containing a heated circular obstacle at its center with heat generation/absorption impact are examined numerically. The cavity’s right and left walls are maintained at low temperatures, while the remaining walls are adiabatic. The volumetric external force, MHD, is applied across the inclined cavity. A penalty formulation-based finite element method is used to solve the nonlinear set of governing equations iteratively. The numerical scheme and results are validated through a comparison with the benchmark results, and it shows that our solutions are in good agreement with them. The results are shown in terms of contours of streamlines, isotherms, and average Nusselt number. It is observed that MHD alters the streamlines, isotherms, and average Nusselt number and dominates the flow as compared to any other physical parameter. The average Nusselt number is found sensitive to the central obstacle’s size, and it reduces sufficiently when the radius of the inner cylinder increases. For all the parameters, the streamlines’ symmetric pattern holds, such that the anti-clockwise cells on the left side of the cavity have their symmetric clockwise cells on the right side.
Design of intelligent acquisition system for moving object trajectory data under cloud computing
Authors: Zhang Yang , Asthana Abhinav , Asthana Sudeep , Khanna Shaweta , Mihai Ioan-Cosmin
Published: June 2021

In order to study the intelligent collection system of moving object trajectory data under cloud computing, information useful to passengers and taxi drivers is collected from massive trajectory data. This paper uses cloud computing technology, through clustering algorithm and density-based DBSCAN algorithm combined with Map Reduce programming model and design trajectory clustering algorithm. The results show that based on the 8-day data of 15,000 taxis in Shenzhen, the characteristic time period is determined. The passenger hot spot area is obtained by clustering the passenger load points in each time period, which verifies the feasibility of the passenger load point recommendation application based on trajectory clustering. Therefore, in the absence of holidays, the number of passenger hotspots tends to be stable. It is reliable to perform cluster analysis. The recommended application has been demonstrated through experiments, and the implementation results show the rationality of the recommended application design and the feasibility of practice.
Seasonal and daily activity patterns of mammals in the colony of great cormorants
Authors: Jasiulionis Marius , Balčiauskas Linas
Published: June 2021

Despite extreme changes of ecosystems made by breeding colonies of great cormorants (Phalacrocorax carbo), these territories are still used by mammals. We present results of the analysis of mammal seasonal and daily activity patterns, registered by camera traps in two colonies of the great cormorants in Lithuania. Red foxes and raccoon dogs mainly visited colonies in the cormorant breeding time, April to July. In the inland colony of great cormorants in Lukštas Lake, average red fox relative shooting frequency in cormorant breeding time considerably exceeded that in non-breeding time (on average, 41.8 and 5.9 photos/100 days respectively). In the peninsular colony of great cormorants in Juodkrantė average relative shooting frequency of red fox in the breeding time was 7.8 versus 3.4 photos/100 days in non-breeding time, relative shooting frequencies of raccoon dog were 50.0 versus 1.3 photos/100 days, respectively. Daily activity patterns of wild boar and red fox in both colonies, as well as activity patterns of raccoon dog in Lukštas were related to the activity of cormorants with various degree of significance.
Numerical study of radiative non-Darcy nanofluid flow over a stretching sheet with a convective Nield conditions and energy activation
Authors: Vedavathi N. , Dharmaiah Ghuram , Venkatadri Kothuru , Gaffar Shaik Abdul
Published: June 2021

Numerous industrial processes such as continuous metal casting and polymer extrusion in metal spinning, include flow and heat transfer over a stretching surface. The theoretical investigation of magnetohydro-dynamic thermally radiative non-Darcy Nanofluid flows through a stretching surface is presented considering also the influences of thermal conductivity and Arrhenius activation energy. Buongiorno’s two-phase Nanofluid model is deployed in order to generate Thermophoresis and Brownian motion effects [1]. By similarity transformation technique, the transport equations and the respective boundary conditions are normalized and the relevant variable and concerned similarity solutions are presented to summarize the transpiration parameter. An appropriate Matlab software (Bvp4c) is used to obtain the numerical solutions. The graphical influence of various thermo physical parameters are inspected for momentum, energy and nanoparticle volume fraction distributions. Tables containing the Nusselt number, skin friction and Sherwood number are also presented and well argued. The present results are compared with the previous studies and are found to be well correlated and are in good agreement. The existing modelling approach in the presence of nanoparticles enhances the performance of thermal energy thermo-plastic devices.
circ_0030018 promotes glioma proliferation and metastasis
Authors: Shao Yun , Yang Zhengxiang , Miao Weifeng , Yu Xiangrong , Wu Yiping , Pu Yi
Published: June 2021

Background

Circular RNA (circRNA) plays an essential role in tumor progression, including glioma. circ_0030018 is a newly discovered circRNA that is highly expressed in glioma. However, its role and mechanism in glioma need to be further elucidated.

Methods

The expression of circ_0030018, microRNA (miR)-194-5p, and tripartite motif containing 44 (TRIM44) was examined using quantitative real-time PCR. Cell proliferation, migration, invasion, and apoptosis were determined using MTT assay, colony formation assay, transwell assay, and flow cytometry. Moreover, dual-luciferase reporter assay and RNA pull-down assay were used to verify the interactions among circ_0030018, miR-194-5p, and TRIM44. The protein expression of TRIM44 was assessed by western blot analysis. Animal experiments were conducted to explore the role of circ_0030018 in glioma tumor growth in vivo.

Results

circ_0030018 was overexpressed in glioma tissues and cells, and its silencing could inhibit glioma cell proliferation, migration, invasion, and accelerate apoptosis. miR-194-5p could be sponged by circ_0030018, and its overexpression could hinder the progression of glioma cells. Further experiments revealed that miR-194-5p inhibitor reversed the negative regulation of circ_0030018 knockdown on glioma cell progression. In addition, TRIM44 was a target of miR-194-5p, and its downregulation could repress glioma cell progression. Overexpressed TRIM44 reversed the inhibition effect of miR-194-5p on glioma cell progression. Animal experiments suggested that circ_0030018 knockdown could reduce glioma tumor growth through regulating miR-194-5p and TRIM44.

Conclusion

Our 8data showed that circ_0030018 enhanced glioma progression by sponging miR-194-5p to regulate TRIM44, indicating that circ_0030018 might be a potential treatment target for glioma.
Nature-inspired solutions to bluff body aerodynamic problems: A review
Authors: Siddiqui Naseeb Ahmed , Agelin-Chaab Martin
Published: June 2021

This review investigates the nature-inspired techniques for the optimization of the aerodynamic forces on bluff bodies. To provide a rich understanding of these nature-inspired phenomena, three distinct zones of the species fishes (nektons), birds (avians) and the fast running land animals are considered. This allows contextualizing different capabilities of the species in different environmental necessities. The review follows a trend in which drag reduction capabilities of individual parts of these species, including body shape & size, tails, fins, surface structure, wings, and wingtips, have been explored in detail. By focusing on specific parts, the review examined the methods and physics involved, which provides space to narrate the development of ideas and our current understanding of the nature-inspired drag reduction and their application to bluff body aerodynamics. Consequently, nature-inspired promising areas for future endeavor related to the bluff body has been discussed in detail. It was found that, though, aerospace field has found several bird inspired application but the bluff body flow modification have only few. Similar is the case with fishes and land animals which have not been explored yet for aerodynamic use on the bluff bodies. The crucial importance of passive devices are also highlighted along with the review of their application on the bluff bodies inspired by nature. Furthermore, several of nature-inspired techniques are proposed and compared to facilitate the research in this direction. It provides a fundamental method  to develop nature-inspired flow control devices for the bluff bodies.
Improving the performance of a diesel engine by changing injectors characteristics after reduction on the compression ratio
Authors: Chamehsara Saeed , Karami Mohammadreza
Published: June 2021

In order to repair internal combustion engines, sometimes it is necessary to replace the components of these engines with each other. Therefore changes in engine performance are inevitable in these conditions. In the present study, by changing the coneccting rod and the crank of the OM457 turbo diesel-fueled engine with the OM444, it was observed that the performance of the engine decreases. Numerical simulations have been carried out to study the Possible ways to mitigate this reduction. One way to achieve this goal is to change the fuel injector’s characteristics such as, fuel injector’s nozzle hole diameter, number of nozzle holes, and start time of fuel injection. In this study, the impact of these parameters on the performance and emissions of these engines were analyzed. Another scenario is an increase in inlet fuel and air by the same amount. The results indicate that By reducing the diameter of fuel injector holes and hole numbers, the performance of the engine was increased. on the other hand, the NOx emissions were increased while the amount of soot emission decreased. The same results were concluded by retarding the start time of injection. Subsequently, a case study of changing fuel injector parameters for mitigation of decreased performance was performed. These parameters were simultaneously applied, and results were compared. The performance of the engine with improved injector’s characteristics was close to the main OM457. Similar results were obtained by increasing the amount of inlet air and fuel.
Therapy considerations in neuroendocrine prostate cancer: what next?
Authors: Beltran Himisha , Demichelis Francesca
Published: June 2021

Lineage plasticity and histologic transformation to small cell neuroendocrine prostate cancer (NEPC) is an increasingly recognized mechanism of treatment resistance in advanced prostate cancer. This is associated with aggressive clinical features and poor prognosis. Recent work has identified genomic, epigenomic, and transcriptome changes that distinguish NEPC from prostate adenocarcinoma, pointing to new mechanisms and therapeutic targets. Treatment-related NEPC arises clonally from prostate adenocarcinoma during the course of disease progression, retaining early genomic events and acquiring new molecular features that lead to tumor proliferation independent of androgen receptor activity, and ultimately demonstrating a lineage switch from a luminal prostate cancer phenotype to a small cell neuroendocrine carcinoma. Identifying the subset of prostate tumors most vulnerable to lineage plasticity and developing strategies for earlier detection and intervention for patients with NEPC may ultimately improve prognosis. Clinical trials focused on drug targeting of the lineage plasticity process and/or NEPC will require careful patient selection. Here, we review emerging targets and discuss biomarker considerations that may be informative for the design of future clinical studies.
Hospitalizacijų po pakartotinio atvykimo į skubios pagalbos skyrių problema ligoninėje, jų įtaka paslaugų kokybei bei būdai jas valdyti
Authors:   , Bilotienė Motiejūnienė Aušra
Published: June 2021

The problem of hospitalizations during return visits to the hospital emergency department, their impact on the quality to healthcare services and the ways to manage them
Radar measurement of target angle elevation over the sea by matrix pencil method taking into account the interference of multipath and thermal noise of radar
Authors:   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Pedenko Y. , Bukin A. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Reznichenko N. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine
Published: June 2021

Subject and Purpose. The Matrix Pencil method is investigated as a means of increasing the accuracy of measuring the angles of low-altitude targets above sea level. The aim of the study was to evaluate its effectiveness in the conditions of interference created by multi-beam propagation, represented by mirror and diffuse reflection of radio waves from the sea surface, and thermal noise of radar receiving channels, and to justify measures to achieve high efficiency in different combinations. and obstacle levels. Methods and Methodology. The study was conducted by computer simulation. It covered the sea waves, which met the conditions of both specular and strong diffuse reflection, as well as different levels of thermal noise in the receiving channels of the radar. Typical conditions were used in the simulation: the length of the route – 2000 m, the height of the center of the receiving antenna at sea level – 12 m, the width of the antenna beam – 1°, the angular height of the target – 0.3°. The effectiveness of the method was determined by comparing it with the previously studied method of root-MUSIC under identical conditions. Results. The data on the errors of measuring the place angle when using different a priori parameters of the Matrix Pencil method are obtained. Recommendations for the choice of these parameters have been developed to minimize errors in measuring the angles of the place. The advantages and disadvantages of the Matrix Pencil method in comparison with the root-MUSIC method are noted. Conclusion. The obtained results can be used in the development of radars designed to support low-altitude objects above sea level.
A laboratory magnetometer for express measurements of magnetic hysteresis loops
Authors:   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Sova K. , Vakula A. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Polevoy S. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Tarapov S. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine,   V.N. Karazin Kharkiv National University
Published: June 2021

Subject and Purpose. The development of technologies for synthesis of nanoscale magnetic materials requires new techniques for measuring magnetic properties of nanoscale magnetic materials in such a way as to provide express post-synthesis measurements of magnetic properties and exclude, in doing so, any mechanical displacements of measured specimens. Despite the fact that numerous techniques exist for studying magnetic properties of materials, the development of such magnetic nanomaterials as magnetic nanoparticles faces the need in novel measuring approaches based on standard procedures. Novel express techniques are called to gain information about how magnetic properties of magnetic materials vary over time and respond to such factors as temperature, storage conditions, stabilizing agents, exposure to an external magnetic field. Method and Methodology. In this work, magnetic hysteresis loops are registered using a newly developed technique based on the method of small disturbances (by an external magnetic field) and combining standard constructions of hysterometers and vibrating-sample magnetometers. Results. Magnetic hysteresis loops of a bulky ferrite (brand 1SCh4) sample and a 40 μm thick YIG film have been registered using the presented technique and compared with the results obtained by the well-known technique for measuring magnetic hysteresis loops. They are in good agreement with a margin error as low as 10%, which can be further improved by means of more precise equipment. With the presented technique, the magnetization and the coercive force of Fe0.5Co0.5Fe2O4 nanoparticles not examined yet have been determined. Conclusion. The developed technique makes it possible to study magnetic materials of various compositions including nanoscale magnets.
Eigenwave spectra of a solid-state plasma cylinder in a strong longitudinal magnetic field
Authors:   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Averkov Y. ,   V.N. Karazin Kharkiv National University, Prokopenko Y. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine,   Kharkiv National University of Radio Electronics, Yakovenko V. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine
Published: June 2021

Subject and Purpose. Eigenwave studies of various bounded structures make a prolific line of investigation in both modern radiophysics and solid-state and functional electronics. Conducting solids demonstrating plasma (semiconductor) properties attract particular attention. Owing to the high conductivity of semiconductors (as it is inversely proportional to the charge carrier effective mass that is smaller than the free electron mass), interest exists in propagation features of slow elliptical-polarization electromagnetic waves – helicons – in magnetized semiconductor waveguides. The present work aims to determine eigenwave spectra of a solid-state plasma cylinder in a strong constant concentric magnetic field. Methods and Methodology. The eigenwave theoretical study of a magnetoplasma cylinder in the free space is conducted in terms of Maxwell's equations. The motion equation of conduction electrons of a solid-state plasma is adopted with quasi-stationarity electromagnetic field conditions satisfied. The collision frequency of majority charge carriers is assumed substantially less than their cyclotron frequency. Results. The dispersion equation of a cylindrical solid-state plasma (semiconductor) waveguide has been obtained. It has been shown that a collisionless magnetoplasma waveguide supports propagation of bulk and surface helicons. The propagation is accompanied by the surface current flowing lengthways cylinder components. Charged particle collisions destroy the surface current and initiate additional (to helicons) H-type hybrid waves such that their phase velocities coincide with phase velocities of the helicons. It has been found that the nonreciprocity effect holds for the waveguide eigenwaves having identical field distribution structures but different azimuthal propagation directions, and it also does as soon as the external magnetic field changes its sense. Conclusion. The research results have deepened our understanding of physical properties of bounded structures with plasma-like filling media. More systematization has been added to the knowledge of eigenwave behavior of these structures in a quasi-stationarity electromagnetic field.
Peranan Perencanaan Bagi Pengembangan Masjid Raya Nurul Hidayah Kebayoran Lama Jakarta Selatan
Authors: Pachad Pachad , Sobirin Sobirin
Published: June 2021

The Great Mosque of Nurul Hidaya Kebayoran Lama, South Jakarta, is used as the center of local Muslim activities. Today the function of the mosque as a place to accommodate various religious activities and not just a place for ritual worship. This study uses descriptive qualitative research. The results of this study indicate that the role of planning for the development of the Nurul Hidayah Great Mosque includes several steps in compiling an activity program aimed at smoothing all existing activities, program of activities, consists of 10 to 25 years long term planning programs, 7 to 5 years medium term, and a year of short term planning program.Keywords: the role of planning for mosque development AbstrakMasjid Raya Nurul Hidayah Kebayoran Lama Jakarta Selatan dijadikan sebagai pusat kegiatan kaum muslimin setempat. Dewasa ini fungsi masjid sebagai wadah untuk menampung berbagai kegiatan keagamaan dan bukan hanya tempat untuk ibadah ritual saja. Penelitian ini menggunakan penelitian deskriptif kualitatif. Hasil penelitian ini menunjukkan bahwa Peranan perencanaan bagi Pengembangan Masjid Raya Nurul Hidayah  mencakup beberapa langkah dalam menyusun program kegiatan yang bertujuan melancarkan semua kegiatan yang ada, program kegiatan yaitu perencanaan jangka panjang 10 sampai 25 tahun, perencanaan jangka menegah yaitu 7 sampai 5 tahun dan perencanaan jangka pendek selama 1 tahun.Kata Kunci: Peranan Perencanaan  Pengembangan Masjid
Menakar Manajemen Kolaborasi Wali Kota Surabaya dengan UMKM Dalam Pandemic Covid-19 Perspektif Maqashid Syariah
Authors: Harisah Harisah , Mukri Syarifah Gustiawati , Mohsi Mohsi , Suhaimi R
Published: June 2021

Sebagai kota yang terdampak virus korona, yang sempat berada pada posisi hitam, Surabaya menjadi salah satu daerah yang memiliki tugas paling berat dalam mempertahankan sector ekonomi rakyatnya. Ancaman paling mengkawatirkan adalah adanya kelesuan dalam kegiatan dagang (resesi) serta adanya pemutusan hubungan kerja (PHK). Manajemen kolaborasi wali kota Surabaya dengan UMKM menjadi salah satu gagasan penting agar dampak covid-19 pada sector ekonomi tidak terlalu drop. Sebagai lamgkah untuk mendapatkan hasil yang maksimal, maka penelitian ini menggunakan pendekatan policy formulation dan policy implemention dengan jenis penelitian kualitatif. Hasil peneltian menunjukkan bahwa kolaborasi yang dilakukan wali kota Surabaya dengan pelaku UMKM berjalan sedangkan bentuk manajemennya memberlakukan ganjil genap dalam operasi UMKM, menutup beberapa pasar yang bukan kebutuhan pokok dalam beberapa waktu, serta memberlakukan protocol kesehatan bagi UMKM yang beroperasi dalam maqashid syariah hal ini dilakukan untuk menjaga diri dan menjaga keturunan serta  menjaga harta.KeyWord : kolaborasi, Covid-19, Maqasid syariah.