bluuebunny/crossref_metadata_2025 huggingface dataset:
Nonlinear optical properties of CsPbClxBr3-x nanocrystals embedded glass
Authors: Quan Chenjing , Xing Xiao , Huang Sihao , Jin Mengfeifei , Shi Tongchao , Zhang Zeyu , Xiang Weidong , Wang Zhanshan , Leng Yuxin
Published: June 2021

All-inorganic perovskite has attracted significant attention due to its excellent nonlinear optical characteristics. Stable and low-toxic perovskite materials have great application prospects in optoelectronic devices. Here, we study the nonlinear optical properties of

CsPbCl

x

Br

3
−
x

(

x
=
1

, 1.5, 2) nanocrystals (NCs) glass by open-aperture Z-scan. It is found that the two- (2PA) and three-photon absorption (3PA) intensity can be adjusted by the treatment temperature and the ratio of halide anions. The perovskite NCs glass treated at a high temperature has better crystallinity, resulting in stronger nonlinear absorption performance. In addition, the value of the 2PA parameter of

CsPbCl

1.5

Br

1.5

NCs glasses decreases when the incident pump intensity increases, which is ascribed to the saturation of 2PA and population inversion. Finally, the research results show that the 2PA coefficient (

0.127
  
cm
 

GW

−
1

) and 3PA coefficient (

1.21
×

10

−
5

  

cm

3

 

GW

−
2

) of

CsPbCl

1

Br

2

NCs glass with high Br anion content are larger than those of

CsPbCl

2

Br

1

and

CsPbCl

1.5

Br

1.5

NCs glasses. This is mainly due to the greater influence of Br anions on the symmetry of the perovskite structure, which leads to the redistribution of delocalized electrons. The revealed adjustable nonlinear optical properties of perovskite NCs glass are essential for developing stable and high-performance nonlinear optical devices.
Alcohol unleashes homo economicus by inhibiting cooperation
Authors: Zak Paul J. , Hayes Kylene , Paulson Elizabeth , Stringham Edward
Published: June 2021

Human behavior lies somewhere between purely self-interestedhomo economicusand socially-motivatedhomo reciprocans. The factors that cause people to choose self-interest over costly cooperation can provide insights into human nature and are essential when designing institutions and policies that are meant to influence behavior. Alcohol consumption can shed light on the inflection point between selfish and selfless because it is commonly consumed and has global effects on the brain. The present study administered alcohol or placebo (N = 128), titrated to sex and weight, to examine its effect on cooperation in a standard task in experimental economics, the public goods game (PGG). Alcohol, compared to placebo, doubled the number of free-riders who contributed nothing to the public good and reduced average PGG contributions by 32% (p = .005). This generated 64% higher average profits in the PGG for those who consumed alcohol. The degree of intoxication, measured by blood alcohol concentration, linearly reduced PGG contributions (r = -0.18, p = .05). The reduction in cooperation was traced to a deterioration in mood and an increase in physiologic stress as measured by adrenocorticotropic hormone. Our findings indicate that moderate alcohol consumption inhibits the motivation to cooperate and thathomo economicusis stressed and unhappy.
Susanne Langer, Marshall McLuhan and media ecology: Feminist principles in humanist projects
Authors: McLeod Rogers Jaqueline
Published: June 2021

In current scholarship, Susanne Langer and her theories of art, perception and connectivity are less well known than McLuhan’s. Comparison brings to the fore that both were concerned with the dulling effects of heavy-handed science and technology unregulated by human hand and heart, and both understood the expressive and liberatory possibilities of language as media and metaphor. By reading ‘diffractively’ – finding new connections and honouring patterns over polemics – this article brings Langer back into the scholarly conversation and reinvigorates our understanding of McLuhan. Langer did not consider her thought as principled by feminism. Yet according to recent critical biographer Adrienne Dengerink Chaplin, her work was rooted in feminist ontology for espousing principles of relationality and embodiment. My article argues that McLuhan, too, eschewed dichotomies and linearities of traditional thought for the principle of relationality. Extending this claim further, my article also submits that media ecology – with its emphasis on interconnectivities, on feeling and thinking, on non-linearity – has features in common with feminist thinking.
Social Work and Digital Activism: Sorority, Intersectionality, Homophily and Polarisation in #MeToo
Authors: Castillo de Mesa Joaquín , Marcuello-Servós Chaime , López Peláez Antonio , Méndez Domínguez Paula
Published: June 2021

Introduction. Social Work is currently facing the significant challenge of dealing with social networking sites – which have become a parallel universe of socialisation – in which ever-increasing digital activism is taking place. The #MeToo movement stands out as a global benchmark. It has established itself as a digital-global feminist movement, fighting harassment and the abuse of women. Methodology. Adopting a social work perspective, a longitudinal analysis was performed of the #MeToo movement on Twitter between 2018-2019 based on social network analysis and netnography, in conjunction with specific algorithms. Results. The results showed significant patterns of sorority, homophily and affective polarisation through the echo chambers and filter bubbles that were identified in the detected Twitter communities. Furthermore, these online communities reflected real offline characteristics (geographical location, affinities, similarities). Discussion and conclusions.  The #MeToo movement’s global effect and durability has led to a new understanding of social movements in the digital era. Social workers must not be blind to the exciting digital opportunities arising from digitalisation. They must combat homophily and the polarisation of global society on social networking sites, promoting values oriented towards tolerance of diversity. Practitioners must show awareness and intervene proactively in global digital spheres to understand, reflect and promote social justice, equality of rights and the empowerment of disadvantaged, vulnerable and oppressed people.
A kelet-közép-európai háztartási megtakarításokat és eladósodást meghatározó makrogazdasági tényezők = The determinants of household savings
Authors: Endrődi-Kovács Viktória , Kutasi Gábor , Tóth Tímea Adél
Published: June 2021

A különböző közgazdasági irányzatok között egységes álláspont, hogy a háztartások megtakarítása a beruházáson keresztül a gazdasági növekedés egyik motorja. Azt illetően azonban, hogy a lakossági megtakarításokat, illetve az eladósodottságot milyen tényezők határozzák meg, éles vita figyelhető meg a szakirodalomban. Amíg például a neoklasszikus közgazdaságtan a kamatlábra helyezi a hangsúlyt, addig a keynesi megközelítés inkább a jövedelemre. A tanulmány a kelet-közép-európai (V4+3) gazdaságok háztartási megtakarítására vonatkozóan végez OLS panelregressziós elemzést. A különböző torzító hatások kiszűrésével beazonosítja azokat a makrogazdasági változókat, amelyek ténylegesen hatnak a háztartási szektor megtakarításaira és eladósodására. Mindebből következtetni lehet a hatékony megtakarítás-ösztönzőkre. = There is a common approach among the various economics schools that households’ savings are an engine of the economic growth by investments. However, a sharp discussion can be observed in the literature about the real determinant factors of household savings and indebtedness. While the neoclassical economics focuses on interest rates among others, the Keynesian approach emphasises rather the role of income. The study performs OLS panel regression analysis about the household savings of Central and Eastern European (V4+3) economies. It identifies the macroeconomic variables that factually affect the households’ savings and indebtedness by filtering the various distorting effects. The results give opportunity to conclude about the effective incentives for savings.
A vállalkozások közzétételi gyakorlatának elméleti megközelítése = Theoretical Aspects of Accounting Disclosure
Authors: Lippai-Makra Edit , Rádóczi Zsolt
Published: June 2021

A vállalkozások közzétételi gyakorlata folyamatosan változott az elmúlt évtizedekben a változó jogi, gazdasági és társadalmi környezet hatására. Egyre több kutatás foglalkozik a közzétételi motivációs tényezőkkel, valamint a vállalati információk közlésével foglalkozó elméletekkel (érdekhordozói elmélet, megbízó-ügynök elmélet, jelzéselmélet, legitimitás elmélet). Tanulmányunkban kísérletet teszünk ezen ösztönző tényezők csoportosítására, valamint bemutatjuk a fenti elméleteket. = Business disclosure practices have changed progressively in recent decades as a result of the changing legal, economic and social environment. More and more research is dealing with the motivational factors of disclosure as well as theories dealing with the disclosure of corporate information (stakeholder theory, principal-agent theory, signaling theory, legitimacy theory). In our study, we attempt to group these motivating factors and present the above theories.
Recenzió Benczes István: Válság és válságrendezés a Gazdasági és Monetáris Unióban című könyvéről
Authors: Győrffy Dóra
Published: June 2021

Benczes István, a Budapesti Corvinus Egyetem Világgazdasági Tanszékének egyetemi tanára 2021. márciusban védte meg MTA doktori disszertációját, mely a könyv alapjául szolgál. Témája rendkívül időszerű. Az elmúlt évtizedekben hozzászokhattunk ahhoz, hogy az egymást követő válságok (alkotmányozás, pénzügyi válság, menekültválság, Brexit, populizmus, járvány) során katasztrófaforgatókönyveket hallgatunk arról, hogy az integráció gyengül, és az Európai Unió hamarosan szétesik. Emellett az integráció mélyüléséről is kapunk híreket, hisz újabb és újabb területeken jelentenek be intézkedéseket a válságok lecsengése után. Benczes István munkájának legfontosabb erénye, hogy képes az egymástól távol álló narratívákat egyetlen elméleti keretbe összefoglalni.
Governance as a Strange Elephant Past Legacies, Current Complexities and Future Challenges On Navigating Troubled Waters (Ferenc Miszlivetz and Attila Pók eds., iASK 2020)
Authors: Agárdi Izabella
Published: June 2021

The other night, as I was reading a book with a poetic and tragically apt title, the TV showed a crowd of rioters raiding the Capitol building in Washington DC. It was as if everything on the pages came to life in front of my eyes in the form of emblematic visual images: the crisis was visible, the tension palpable and never before have I felt a greater need for the return of common sense, rationality, solidarity and faith in institutions and shared values that societies have been trying to perfect and expand since the Enlightenment. Just like in a bad, sensationalist CIA-movie, I saw an example of the worst of our current civilisation: a deep crisis of not only political legitimacy but of democracy. The power of the past, the terrible ghost of the twentieth century came back to haunt, leaving me and many sleepless. What is going to happen? What is the way out of this? (...)
Apropriar, citar, ficcionalizar
Authors: Schröpel Daiana
Published: June 2021

Práticas narrativas baseadas na apropriação, na citação e na ficcionalização de repertórios verbo-visuais são significativas na produção artística atual. Artistas jogam com os interstícios identificados nesses recursos, que se encontram, assim, na iminência de serem reapresentados segundo formatos diversos. Dentre estes interessam os documentais, que operam como veículos da ficção, tensionando a relação entre fato e fabulação, entre realidade e imaginação. Nesse sentido, indaga-se: como construir um relato alterno, na forma de uma realidade possível, a partir de interstícios rastreados em imagens, textos e discursos? Esse entendimento é formulado por meio do estudo do processo criativo da trajetória biográfica de Elena Landkraut (2017-2019), posto em interlocução com Austerlitz (2001), obra de W. G. Sebald, com o aporte teórico de C. Ginzburg (2007) e L. Wolff (2014). Neste estudo, formas documentais, vinculadas a valores de autenticidade e de veracidade, são compreendidas como representações parcelares do passado. Depreende-se de que modo representações possíveis do passado são elaboradas por meio da dimensão imaginativa e conjectural da criação ficcional.
Le regardeur à l'épreuve du « one shot »
Authors: Katz Stéphanie
Published: June 2021

Lors de la rétrospective de l’œuvre de Ph. Parreno présentée en 2013 au Palais de Tokyo, un DVD contenant deux films de l’artiste était distribué pour l’achat d’un ticket d’entrée. Sur l’emballage était précisé que ceux-ci s’effaceront à l’issu du premier visionnage. Ce « don-retrait » ambivalent fut l’occasion d’une interrogation subjective relative à mon statut de « regardeuse », consommatrice d’art. L’analyse des films donne à comprendre comment l’artiste reverse le double héritage des machines célibataires de M. Duchamp d’une part, et des icônes de A. Warhol d’autre part, au champ des technologies visuelles de la Société du spectacle. La figure de Marilyn, saisie comme un motif trans-historique flottant entre Annonciation, star, et fantôme, met en lumière la constance du projet de l’image, au fil des évolutions historiques et techniques : désigner l’irreprésentable de la mort.
¿Qué se entiende por ciudadanía global?
Authors: Roura-Javier Antonio
Published: June 2021

No hay un acuerdo entre los distintos organismos internacionales cuando se refieren a la ciudadanía global. Todos coinciden en su importancia y en la urgencia y necesidad de incorporarla a la vida escolar, pero es relevante conocer los diferentes enfoques —antropológicos, económicos, sociales y educativos— que quieren transmitir para no incorporarlos acríticamente a nuestras escuelas.
Educadores y educadoras para un Pacto Educativo Global
Authors: López Ramos Yénifer
Published: June 2021

Educadores y educadoras estamos llamados a dar respuesta a la llamada del papa a trabajar por la construcción de un Pacto Educativo Global, respondiendo desde nuestra labor diaria en espacios educativos de todo el mundo. Para generar espacios de hospitalidad, paz, justicia y esperanza nuestro rol debe tener en cuenta una serie de actitudes y un planteamiento educativo innovador, creativo y que promueva espacios de encuentro y transformación.
Endo- i egzogeniczne przyczyny marginalizacji Stronnictwa Demokratycznego w latach 90. XX wieku
Authors: Żebrowski Waldemar
Published: June 2021

Przedmiotem badań jest Stronnictwo Demokratyczne, które powstało jeszcze w okresie II Rzeczypospolitej Polskiej. Po II wojnie światowej było jednym z elementów polskiego systemu partyjnego. Celem opracowania jest prezentacja wewnętrznych i zewnętrznych czynników, które miały wpływ na marginalizację polityczną SD w latach 90. XX wieku. Zebrano w jedną całość i uzupełniono rozproszone w różnych opracowaniach autora uwagi dotyczące tytułowej problematyki oraz dokonano ponownej interpretacji. Kryzys przywództwa w partii, brak konsekwencji w podejmowanych działaniach, likwidacja zasobów prasowych, konflikty w relacjach kierownictwa SD z instancjami terenowymi, odpływ członków, rozpad komitetów i kół, słaba znajomość zasad demokracji, niezdolność do przygotowania atrakcyjnej oferty programowej, częste zmiany partyjnych liderów – to najważniejsze przyczyny wewnętrzne, które przesądziły o marginalizacji politycznej SD. Istotne były tu też względy zewnętrzne. Przede wszystkim funkcjonowanie w warunkach systemu partii hegemonicznej nie sprzyjało rozwojowi organizacyjnemu, kadrowemu i programowemu, co musiało powodować różne deformacje. Po 1989 roku, w warunkach swobodnego kształtowania się systemu partyjnego, nowe ugrupowania oskarżały SD o współpracę z PZPR i legitymizowanie systemu politycznego PRL; pamiętali też o tym wyborcy. Wszystkie podejmowane w takich warunkach przez tę partię działania polityczne kończyły się porażką i potęgowały wewnętrzny kryzys.
Is More Mittelstand the Answer? Firm Size and the Crisis of Democratic Capitalism
Authors: Kohl Sebastian , Ergen Timur
Published: June 2021

Corporate concentration is currently being discussed as a core reason for the crisis of democratic capitalism. It is seen as a prime mover for wage stagnation and alienation, economic inequalities and discontent with democracy. A tacit coalition of progressive anti-monopoly critiques and small business promoters considers more deconcentrated corporate structures to be a panacea for the crisis of democratic capitalism, arguing that small firms in competition are better for employment, equality and democracy. This paper offers a brief outline of ideas of the anti-monopoly and small business ideal and critically evaluates whether a more deconcentrated economy may live up to these promises. While we agree that the plea for strengthened antitrust enforcement contains relevant and promising prospects for reform, our analysis concludes on a decidedly critical note. In particular, we caution against romanticized notions of the small capitalist firm.
The Skilful Origins of Human Normative Cognition
Authors: Birch Jonathan
Published: June 2021

I briefly present and motivate a ‘skill hypothesis’ regarding the evolution of human normative cognition. On this hypothesis, the capacity to internally represent action-guiding norms evolved as a solution to the distinctive problems of standardizing, learning and teaching complex motor skills and craft skills, especially skills related to toolmaking. We have an evolved cognitive architecture for internalizing norms of technique, which was then co-opted for a rich array of social functions. There was a gradual expansion of the normative domain, with ritual playing an important role in bridging the gap between concrete, enacted norms and general, abstract norms, such as kinship norms. I conclude by stating nine predictions arising from the skill hypothesis.
Synthesis and spectral characterizations of vanadyl(ii) and chromium(iii) mixed ligand complexes containing metformin drug and glycine amino acid
Authors: Aljazzar Samar O.
Published: June 2021

Metformin is one of the most effective drugs for the treatment of type II diabetes. Two new mixed ligand complexes of vanadyl(ii) and chromium(iii) ions with the general formula [VOL1L2]SO4 and [CrL1L2(Cl)2]Cl, respectively, where L1 is the metformin and L2 is the glycine amino acid, have been synthesized in MeOH solvent with 1:1:1 stoichiometry and characterized by several spectroscopic techniques. The spectroscopic data suggested that the [VOL1L2]SO4 complex possesses a square pyramidal geometry, where the [CrL1L2(Cl)2]Cl complex possesses an octahedral geometry. The L1 ligand coordinated to the VO(ii) and Cr(iii) ions via the N atoms of the imino (‒C═NH) groups, where the L2 ligand coordinated via the O atom of the carboxylate group (COO) and the N atom of the amino group (NH2). The interaction of ligands L1 and L2 with the metal ions leads to complexes that have organized nanoscale structures with a main diameter of ∼14 nm for the [CrL1L2(Cl)2]Cl complex and ∼40 nm for the [VOL1L2]SO4 complex.
Data-driven design of deployable structures: Literature review and multi-criteria optimization approach
Authors: Dragoljevic Milan , Viscuso Salvatore , Zanelli Alessandra
Published: June 2021

Classification and development of the deployable structures is an ongoing process that started at the end of 20th century and is getting more and more attention throughout 21st. With the development of the technology, constructive systems and materials, these categorizations changed – adding new typologies and excluding certain ones. This work is giving a critical review of the work done previously and on the change of the categories. The special interest is given to the pantographs (or scissor structures) and the Zeigler’s dome as the form of their application. It is noticeable that after its introduction in 1977, the dome was a part of the initial classification, but with the time it lost its place. The reason for this is the introduction of more efficient scissor dome structures. However, perhaps with the use of data-driven design, this dome can be optimized and become relevant again.

The second part of the paper is dedicated to the development of the structural optimization algorithm for panto-graph structures and its application on the example of Zeigler’s dome. Besides the direct analysis, the final part includes the generative optimization algorithm which could help to a decision-maker in the early stages of the design to understand and select the options for the structure.
Didáctica y didáctica de la Geografía: bases de su unidad teórico-metodológica
Authors: Álvarez Cruz Pedro
Published: June 2021

El presente artículo de reflexión teórica tiene como objetivo explicar las relaciones esenciales existentes entre la didáctica y la didáctica de la Geografía, así como su unidad teórico-metodológica. En su elaboración se utilizó una metodología de investigación documental; apoyada en diversas técnicas, tales como: lectura de fuentes documentales, recopilación de datos y presentación de la información. El artículo muestra las relaciones esenciales existentes entre la didáctica y las didácticas especiales; las cuales se expresan en los tres niveles siguientes: 1) general-particular-singular; 2) abstracto-concreto-generalización; y 3) teórico-metodológico-práctico. El análisis de estos niveles de relación revela, esencialmente, los fundamentos filosóficos, sociológicos, psicológicos, pedagógicos y didácticos; que constituyen bases de la unidad teórico-metodológica de la didáctica y las didácticas especiales.
cómic y la enseñanza de la Historia Contemporánea. Apuntes didácticos para la enseñanza de la memoria histórica y los movimientos sociales en distintos niveles educativos
Authors: Vadillo Muñoz Julián
Published: June 2021

La amplitud de la historia, en los distintos niveles educativos que se imparte, a veces genera problema a la hora de abarcar su totalidad o hay cuestiones que quedan en un segundo plano. Una cuestión que para el docente se convierte en un problema. Además, las nuevas corrientes historiográficas en el ámbito universitario, como la memoria histórica, hace que los planes de estudio se tengan que adaptar a ello. Una forma sencilla de abordar esas zonas grises en el temario de historia, tanto en primera, secundaria como Universidad, es el cómic. En este artículo se realiza un repaso general al estado de la cuestión de la memoria histórica, de la importancia del cómic en el ámbito educativo y de ejemplos a través de ítems histórico de cómics que pueden servir de adaptación didáctica a las finalidades académicas
Ensino de Geografia e resistência camponesa em uma trincheira do semiárido baiano, Brasil
Authors: Matos de Oliveira Guilherme
Published: June 2021

Este texto tem o objetivo de elucidar nossa experiência docente nos percursos do Ensino de Geografia do campo no município de Anagé-Bahia, Brasil; apontando sua relevância nos processos de resistência camponesa diante do avanço contraditório do atual modo de produção em seus espaços, e tendo como aporte metodológico discussões teóricas acerca da temática em questão, bem como apontamentos reflexivos sobre a significativa contribuição de nossas práticas de ensino tanto com a aprendizagem de nossos estudantes camponeses quanto com as estratégias destes sujeitos na convivência com o semiárido, e na defesa pela garantia dos seus modos de vida e trabalho socializados em suas trincheiras territoriais.
APPLICATION OF WAVELET TRANSFORM FOR PHASE-TO-GROUND FAULT PROTECTION IN MEDIUM VOLTAGE ELECTRICAL NETWORKS
Authors:   Donetsk National Technical University, Shibankova sq., 2, Pokrovsk, Donetsk region, 85300, Ukraine, Syvokobylenko V.F. , Lysenko V.A. ,   Donetsk National Technical University, Shibankova sq., 2, Pokrovsk, Donetsk region, 85300, Ukraine
Published: June 2021

For electrical networks with voltage of 6-35 kV with a compensated, isolated or resistor-grounded neutral, a phase-to-ground protection has been developed, in which, based on the results of the time-frequency wavelet transform of zero-sequence currents, voltages and their derivatives, using the obtained analytical expression, the total reactive power wavelet for different frequencies is determined. It is shown that at the initial moment of a phase-to-ground fault on the damaged feeder the power is always positive, and on the undamaged feeder it is negative, regardless of the operating mode of the neutral. Wavelet transform coefficients are found by convolution of discrete values of measured signals with sine-cosine signals of the Morlet mother function. The time-reversed sequence of these signals is obtained using a matrix for which the rules for its formation are stated. An excess of the zero phase sequence voltage amplitude of the set value is used as a starting protection element. With the help of a mathematical model of the network, studies of the behavior of protection in case of blind and arc phase-to-ground faults at various degrees of compensation of capacitive currents, at various voltage values at the moment of the short circuit have been carried out. In all modes, a reliable protection operation is obtained, the sensitivity of which is an order of magnitude higher than the protection based on Fourier transforms. Positive results of testing a protection sample implemented on a microprocessor-based element base at a laboratory stand are obtained. References 20, figures 7, tables 2.
High-adhesion unlayered films: physical and technological basis of their production
Authors: Bashev V. F. , Ryabtsev S. I.
Published: June 2021

Using the modernized three-electrode ion-plasma sputtering method, high-adhesion Cu-films without underlayer were obtained. Films were deposited on glass-ceramic (sitall) substrates. The film thickness was ~500 nm. In this case, the calculated cooling rate reached ~ 1012–1014 K/s. The adhesion properties of Cu films were investigated by the standard method of mechanical separation of the film from the substrate – the “fungus” method. It is established that such film adhesion is more than 20 MPa. It is determined that the obtained high adhesion depends on bias potential value. Using these Cu films in strip resonators without a sublayer makes it possible to increase their Q-factor by 1.5–1.7 times and thereby significantly reduce the resulting operating noise.
Dipole defect decay and dielectric relaxation in Na0.5Bi0.5TiO3 single crystal
Authors: Sidak V. M. , Trubitsyn M. P.
Published: June 2021

Electrical properties of heat treated in air and in vacuum Na0.5Bi0.5TiO3 single crystals were measured in AC field (f=1 kHz) in the range 300–800 K. Relaxation anomaly of permittivity ε(T) is observed near 700 K for the crystal heat treated in vacuum. It is argued that processing in vacuum generates the defect dipoles, which give rise to the dielectric anomaly. The character of the ε(T) experimental dependence is quite different from the predictions of Debye model. The non-Debye behavior of ε(T) is explained by the concentration decrease of dipole defects due to their thermal destruction at high temperatures. In addition, the ε(T) anomaly could be described more precisely by taking into consideration configurational and vibrational entropy of the subsystem of dipole defects. The observed dielectric relaxation is presumably attributed to reorientations of the dipole moments of Ti3+–VO centers.
Measurement of the dielectric properties of paratellurite at microwaves using a biconical resonator
Authors: Andreev M. V. , Drobakhin O. O. , Saltykov D. Yu.
Published: June 2021

The results of measurements of the dielectric parameters of TeO2 samples in the microwave range are presented. The measurements were carried out in X-band by the cavity perturbation method using a measuring setup based on a biconical resonator. The advantages of using a high-Q biconical resonator for measuring the dielectric parameters of a paratellurite sample are considered. The determination of the dielectric parameters of the samples is based on finite element computational model and using digital method for determining the natural frequency by fractional rational approximation of the frequency response. The influence of the deviation of the sample shape from the cylindrical on the resonator parameters and the measurement error is considered. The estimate of the dielectric constant of TeO2 in the crystallographic direction [110] was 24.4, the dielectric loss factor such as tanδ is estimated as 3·10-4. The results obtained are in good agreement with the reference results presented in the scientific literature.
El espejo de Andrei Tarkovski: síntesis de un análisis textual
Authors: Goyes Narváez Julio César
Published: June 2021

El presente artículo es el resultado de la investigación en teoría y análisis textual del film El espejo de Andréi Tarkovski, que condujo a la tesis doctoral denominada La mirada espejeante (2015) 1. A la luz de las nociones nucleares de texto, sujeto y deseo, como campo interdisciplinario de gran eficacia para la investigación del audiovisual contemporánea, se lee en esta inigualable obra cinematográfica aquello que se repite, aglutina, hiende, espejea y que, estando al pie de la letra, no se muestra comprensible. Un saber surge en los tejidos y fracturas del film, en los enlaces del cine tarkovskiano con las vanguardias y con el cine posclásico, es decir, con aquel que deconstruyó el sujeto y la verdad, abandonando el relato clásico y su revisión manierista. No es lo que comunica (el mensaje) lo que despierta nuestro interés, sino aquello que está diciendo (la enunciación o escritura fílmica) como experiencia estética del sujeto del inconsciente.
Diseño y conflicto: acciones para la construcción colectiva
Authors: Fonseca Laverde Kevin
Published: June 2021

El conflicto es natural, inherente al ser humano, y la forma de concebirlo al comprender su definición estimula su gestión y resolución. Desde el 2014, en Palmira, Valle del Cauca, se han desarrollado procesos de manifestación artística, cultural y simbólica que involucran a las comunidades, los conflictos y al diseño, a través de la construcción colectiva y el emprendimiento. En el siguiente artículo se estudian y comparan seis casos de proyectos de diseño, por medio de su valor e impacto en la gestión y desarrollo de estrategias en el sector cultural del municipio. Estos nuevos escenarios han permitido un cambio en las dinámicas de la ciudad, creando procesos de emprendimiento y gestión que anteriormente no habían sido visibles para la población, específicamente desde el diseño. La continuidad de los procesos ha permitido la generación y consolidación de proyectos sociales que, a través de la investigación y la implementación de metodologías participativas, iniciaron la construcción de memoria colectiva y la apropiación del territorio en el Valle del Cauca. Para abordar los anteriores procesos existen dos ejes temáticos que estructuran las manifestaciones culturales, artísticas y simbólicas: el análisis del valor de la disciplina de diseño y la creación de oportunidades para la investigación. Son experiencias que permiten reflexionar sobre la importancia de la construcción de memoria por medio del reconocimiento de los procesos territoriales e identitarios generados desde las comunidades, como actores de cambio en el contexto actual de la sociedad.
El colegio: primer escenario para aprender de seguros
Authors: Novoa Mónica , Guzmán Useche Hugo Armando
Published: June 2021

El presente reporte de investigación se basa en el proyecto bautizado “Insólito”, que fue diseñado y liderado por la Fundación Junior Achievement Colombia (FJAC). El proyecto invita a los jóvenes a conocer, identificar y reflexionar sobre los seguros, los cuales proveen protección y respaldo para las pérdidas imprevistas, evitando el retraso y abandono de los deseos y sueños propios de cada individuo; lo cual, indica la experiencia, es lo que suele suceder cuando ocurren imprevistos y se ven forzados a luchar “exclusivamente” por subsistir durante la etapa más productiva de la vida.  Por medio de juegos y actividades lúdicas se pretende involucrar al joven en el mundo de los seguros.

Los jóvenes que participaron en el proyecto se encontraban cursando décimo grado y se buscaba que se informaran y tomaran buenas decisiones en la adquisición de productos de seguros. Para este grupo se acercaba el momento de salir a la fuerza de trabajo, de independizarse, de consumir productos y servicios, de manera independiente a su núcleo familiar.

La respuesta de los jóvenes fue satisfactoria, no se encontraban alejados de los beneficios que genera el comprar una póliza, fueron conscientes que existe la necesidad de hacerlo y les llamó la atención la información suministrada.
Economía y desarrollo a partir de la actividad turística en el Archipiélago de San Andrés, Providencia y Santa Catalina, Colombia
Authors: Parra Perilla Laura Victoria
Published: June 2021

El turismo se proyecta como uno de los principales sectores económicos a nivel internacional, adquiriendo importancia en los países en vía de desarrollo y guardando una relación directa con el desarrollo de las comunidades; convirtiéndose en un motor clave para el progreso económico. En Colombia esta industria muestra una tendencia positiva, la cual impacta de manera efectiva en la economía del país, permitiendo a la actividad turística desarrollarse como motor de la economía nacional. El presente artículo de reflexión analiza los efectos del crecimiento económico en el Archipiélago de San Andrés, Providencia y Santa Catalina desde las generalidades del destino turístico, identificación de los actores económicos del turismo, análisis de la oferta y demanda y la competitividad turística, evidenciando la importancia del desarrollo económico a través de la actividad turística.
Máscaras caseiras na pandemia de COVID-19: recomendações, características físicas, desinfecção e eficácia de uso
Authors: Sousa Iago Torres Cortês de , Pestana Aylla Mesquita , Pavanello Larissa , Franz-Montan Michelle , Cogo-Müller Karina
Published: June 2021

Resumo Objetivo Descrever as recomendações, características físicas, métodos de desinfecção e eficácia de uso de máscaras caseiras na redução da transmissão da COVID-19. Métodos Realizou-se busca nas bases de dados MEDLINE, SciELO e Google Scholar, além das recomendações oficiais de uso. Resultados Foram incluídas 31 referências. A capacidade de filtração de tecidos variou entre 5% e 98%. Tecidos 100% algodão em duas ou três camadas apresentaram eficácia de filtração entre 70% e 99% em estudos in vitro. Máscaras caseiras, cirúrgicas e respiradores apresentaram respirabilidade entre 2,2 e 3,0 Pascal. A capacidade de redução da propagação de microrganismos por pessoas usando máscaras caseiras foi três vezes menor do que usando máscaras cirúrgicas, embora tenha sido superior ao não uso de máscaras. Conclusão A respirabilidade de máscaras caseiras mostrou-se adequada, enquanto a capacidade de filtração parece ser inferior à das máscaras cirúrgicas, mas superior a não se usar máscara. Não há evidências que respaldem a eficácia e efetividade das máscaras caseiras.
Habilidades Cognitivas Preditoras do Desempenho Aritmético de Crianças de 3º e 4º anos
Authors: Nogues Camila Peres , Jardim Fábio dos Santos , Lima Elielson Magalhães , Dorneles Beatriz Vargas
Published: June 2021

Este estudo se propõe a investigar a relação das habilidades de domínio geral e específico como preditoras do desempenho aritmético de 127 estudantes de 3° e 4° anos do Ensino Fundamental. Os participantes foram avaliados nas habilidades de memória de trabalho, consciência fonêmica, compreensão leitora, transcodificação numérica, estimativa numérica e raciocínio quantitativo. Essas habilidades cognitivas foram avaliadas em dois momentos, no início e no final do ano letivo, sendo nesse segundo momento também avaliado o desempenho aritmético dos estudantes. Os resultados indicaram uma influência direta especificamente da transcodificação numérica, do raciocínio quantitativo e da consciência fonêmica no desempenho aritmético. Além disso, os achados mostraram que a transcodificação numérica é uma habilidade mediadora da relação das habilidades de raciocínio quantitativo e consciência fonêmica com a habilidade aritmética. Com isso, ressalta-se a importância de habilidades de domínio geral e específico para o desempenho aritmético dos estudantes. Destaca-se também a priorização do ensino pautado na compreensão do sistema numérico e das relações entre quantidades (raciocínio quantitativo) para a aprendizagem aritmética, bem como para a prevenção de dificuldades matemáticas futuras.
Spiritual Localization and De-localization: Traditional and Modern Patterns in Hindu Pilgrimage
Authors: Wessler Heinz Werner
Published: June 2021

Going on pilgrimage is a vivid tradition in India and its masterpiece, the Kumbh Mela, is probably the biggest mega-event of its kind in the world. The identification of holy places at established places of pilgrimage is an ongoing process even in our times, contributing to the diffusion-mechanisms of certain pilgrimages. In contradiction to this, the criticism of the institution of pilgrimage has formed an important stream for centuries. The monistic tradition in Hinduism has produced many popular poems that question the reward of religious journeying and ritual bathing at holy places, or that transform pilgrimage into a metaphor for inner journeys towards liberation.
Quality Indicators for Acute Cardiovascular Diseases: Protocol for Scoping Review v1
Authors: Kanaoka Koshiro , Iwanaga Yoshitaka , Tsujimoto Yasushi , Shiroshita Akihiro , Suzuki Takaaki , Nakai Michikazu , Miyamoto Yoshihiro
Published: June 2021

Abstract Introduction: Acute cardiovascular diseases including acute coronary syndrome, acute decompensated heart failure, and acute aortic diseases are leading causes of death in acute clinical settings. Quality indicators are widely used in cardiovascular field to assess and improve the quality of care, but there was no comprehensive review which summarize and assess the currently used quality indicators for acute cardiovascular diseases. Methods and analysis: The scoping review will be performed according to the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) statement. The review will include the following five-stage approach by The Joanna Briggs Institute: (1) identifying the research question; (2) identifying relevant studies; (3) study selection; (4) charting the data and (5) collating, summarize and report the results. Ethics and dissemination: Since our study is a review of the literature, ethics approval is not indicated. We will present the findings from this study in peer-reviewed journals.
The Diversity of Lichens along Elevational Gradients in the Tropical Montane Forest of Selangor, Malaysia
Authors: Abas Azlan , Din Laily
Published: June 2021

This study aims to explore how lichen diversity, composition, and distribution vary with altitude, and environmental factors (temperature and relative humidity). The study was conducted in the forest of Gunung Bunga Buah, Selangor at five sites (different altitudes). Forty-four lichen species were identified. Their diversity, composition, and distribution correlated significantly with the altitude and environmental factors, increasing diversity at higher altitudes. Graphidaceae and Physciaceae species were present at all altitudes, and the dominant species changed according to altitude: Some Parmeliaceae species were found only at higher altitudes (601-1430 m) while Chrysothrix xanthina and a few Physciaceae species were present only at lower altitudes (0-600 m). These findings will provide additional information about the lichens of the tropical montane forest of Malaysia to enhance knowledge on how to manage and sustain lichens in this type of forest.
Biocontrol Potential of Neem Leaf-Based Vermicompost as Indicated by Chitinase, Protease and Β-1,3-Glucanase Activity
Authors: Loh Khye Er , Abdul Aziz Nor Azwady , Mustafa Muskhazli , Ismail Intan Safinar
Published: June 2021

The rising concern regarding the negative impact of synthetic pesticides has led to the search for alternative means of pest control. Vermicomposting the mixture of oil palm empty fruit bunch and neem (Azadirachta indica) leaves, with the latter known to have pesticidal value, is therefore of great interest and significance to be studied. The present study was conducted to evaluate the chitinase, protease and β-1,3-glucanase activity of neem leaf-based vermicompost as an indication of its biocontrol properties. The total microbial population of different composition of the vermicompost was also investigated. The results showed that at 10% neem composition, an increment in microbial population, chitinase and protease activities was observed in the end product. A higher concentration of neem exerted a suppressive effect on the microbial population as well as enzymatic activity. This study suggested that the addition of an appropriate composition of neem leaves as one of the raw materials for vermicomposting would potentially enhance the performance of vermicompost as biofertilizer as well as biopesticide.
The Effect of MS Media Strength and Cytokinin in the Induction of Shoots from Shoot Tip Explants of Australian Finger Lime (Citrus australasica cv. Tasty Green)
Authors: Sriskanda Dahmendra , Khoy Siong Poi , Haradzi Najwa Amalina , Md Isa Nurulhikma , Subramaniam Sreeramanan , Chew Bee Lynn
Published: June 2021

The Australian Finger Lime (Citrus australasica) is a type of citrus from the Rutaceae family, endemic to the east coast of Australia. The finger lime, loaded with numerous vitamins and renders a unique taste, has also been backed by science to contain essential amounts of antioxidants that are beneficial for cell protection, immune response, cancer prevention, ageing, arthritis and prevention of kidney stones. Current propagation attempts still rely on conventional methods that are less efficient and resulted in the slow establishment of farms for finger lime especially for commercialization purposes. This study focuses on the induction of shoots from shoot tip explants using 6-Benzylaminopurine (BAP) and Kinetin. Aseptic explants were inoculated into Murashige and Skoog (MS) medium of full-strength and half-strength followed by full-strength MS media supplemented with different concentrations of BAP and Kinetin. Results obtained in this study showed no significant differences in terms of the number of axillary shoots produced between explants cultured in full and half-strength MS media. However, the highest number of shoots and increment in shoot length were obtained from MS media supplemented with 2.0 mg/L BAP with the values 1.80 ± 0.27 and 2.56 ± 0.36 cm, respectively. In conclusion, MS media supplemented with 2.0 mg/L BAP was found optimal in the induction of shoots and shoot elongation of C. australasica cv. Tasty Green.
LESS DIVIDED AFTER ETA? THE EVOLUTION OF IDEOLOGICAL CLEAVAGES IN THE BASQUE ENVIRONMENTAL FIELD, 2007–2017
Authors: Ciordia Alejandro
Published: June 2021

The Basque Country has traditionally been considered a strongly polarized political community. The influence of the center-periphery cleavage and the shadow of political violence have conditioned many aspects of social life, including relations among civic organizations. Previous literature suggests that differences in organizations’ national identities and/or position towards ETA’s (Euskadi ta Askatasuna, or Basque Country and Freedom in the Basque language) violence have often acted as cleavages fragmenting collective action fields. This research examines whether this picture changed substantially after ETA’s abandonment of violence in 2011 by taking the environmental field as a case study and looking at the evolution of patterns of interorganizational collaboration between 2007 and 2017. The results of statistical network analyses show that both Basque nationalism and ideological positions towards ETA’s use of violence had a strong influence on organizations’ decisions to collaborate with one another up to 2011, whereas during the more recent postconflict period, collaboration seems to occur in a more pluralistic and less ideologically driven fashion.
INTERSECTIONAL PREFIGURATIVE POLITICS: QUEER CABARET AS RADICAL RESISTANCE
Authors: Gouweloos Julie
Published: June 2021

The implementation of intersectional frameworks and political priorities have proven challenging for social movements. Drawing on a case study of queer cabaret and insights garnered through a combination of field observation, semi-structured interviews, and cultural artifacts, I introduce the concept of intersectional prefigurative politics as a theoretical tool for understanding how social movement actors build collectivity and engage in consciousness raising informed by a commitment to intersectional social justice. By distinguishing movement spaces from other social spaces, unsettling hegemonic power relations through a commitment to accessibility and care, and centering marginalized peoples, queer cabaret movement actors build collectives and raise consciousness informed by intersectional politics.
Relations between character strengths and subjective well-being in children and adolescents: A brief overview
Authors: Weber Marco
Published: June 2021

This brief overview focuses on the relations between character strengths and subjective well-being in children and adolescents. The VIA classification of good character encompasses 24 character strengths, positive personality traits that contribute to a good life, which includes but is not limited to satisfaction, happiness, and success. Subjective well-being is a multi-dimensional construct that can be differentiated into positive and negative affect as well as global and domain-specific satisfaction. Cross-national results show that specific character strengths are positively related to positive affect, global life satisfaction, and domain-specific satisfaction. Furthermore, specific character strengths are negatively related to negative affect. Effect sizes are typically small to medium in magnitude. It is concluded that character strengths are clearly relevant correlates of young people’s subjective well-being. Because most - albeit not all - of the results are based on cross-sectional data, more longitudinal studies are needed to further validate these important findings. Nevertheless, the reported findings suggest that it could be very helpful for health-related and other youth-related professionals to be aware of a child or adolescent’s character strengths in order to better interpret their level of subjective well-being.
Role of minimal antibiotic therapy and routine long term post-operative therapy in elective surgery: an evaluation
Authors: Divan Abhijeet S. , Dhuware Mahendra K. , Bharti Manoj K. , Dubey Nitesh K.
Published: June 2021

Background: Antibacterial drugs are powerful agents to prevent infections but excess use of antibiotics led to increase of resistance towards the antibiotics used and thus has risen the expense in medical support.Methods: A total of 250 patients were included in the study. The patients were divided randomly into 2 groups, each containing 125 patients. Group I patients received. Three dosage of injectable ceftriaxone 1 gram intravenous peri-operatively, first dose twelve hour before surgery and second dose half hour before surgical incision and third dose twelve hours after surgery. Group II patients were given injectable ceftriaxone 1 gram intravenous peri-operatively, first dose twelve hour before surgery and second dose half hour before surgical incision and then followed by injection (conventional dose) ceftriaxone 1 gram/day I.V twice daily for the first 5-7 days post-operatively. Using Southampton wound grading system. The wound was inspected on the 3rd, 5th and 7th postoperative day days post operatively.Results: In group I, 15 (12%) cases had grade 2 SSI and in group II, 11 (8.8%) cases had grade 2 SSI. There was no statistical significance: p value is 0.83 and c2 0.048.Conclusions: A minimal dose antibiotic prophylaxis is equally efficient and has added advantage of reducing the duration of hospital stay and cost of medicines for the patients. Hence minimal dose antibiotic is better than a routine long term antibiotics therapy.