bluuebunny/crossref_metadata_2025 huggingface dataset:
Neurodegenerative disorders associated with genes of mitochondria
Authors: Marde Vaibhav S. , Tiwari Prerna L. , Wankhede Nitu L. , Taksande Brijesh G. , Upaganlawar Aman B. , Umekar Milind J. , Kale Mayur B.
Published: March 2021

Background

Over the last decade, aggregating evidences suggested that there is a causative link between mutation in gene associated with mitochondrial dysfunction and development of several neurodegenerative disorders.

Main text

Recent structural and functional studies associated with mitochondrial genes have shown that mitochondrial abnormalities possibly lead to mitochondrial dysfunction. Several studies on animal models of neurodegenerative diseases and mitochondrial genes have provided compelling evidence that mitochondria is involved in the initiation as well as progression of diseases such as Parkinson’s disease (PD), Alzheimer’s disease (AD), Huntington’s disease (HD), and Friedreich ataxia (FA).

Conclusion

In this mini-review, we have discussed the different etiologic and pathogenesis connected with the mitochondrial dysfunction and relevant neurodegenerative diseases that underlie the dominant part of mitochondrial genes in the disease development and its progress.
Pattern of tree diversity in lowland tropical forest in Nikiwar, West Papua, Indonesia
Authors: Murdjoko Agustinus , Aristone Djitmau Dony , Ungirwalu Antoni , Silas Sinery Anton , Setiawati Siburian Rima Herlina , Mardiyadi Zulfikar , Ottow Wanma Alfredo , Frans Wanma Jimmy , Rumatora Alexander , Yahya Mofu Wolfram , Worabai Descarlo , Lamaek May Nunang , Mathias Jitmau Marthen , Frans Mentansan George Alexander , Krey Keliopas , Musaad Ishak , Manaf Marhan , Abdullah Yunus , Mamboai Hans , Enggar Pamuji Khristian , Raharjo Syafrudin , Kilmaskossu Agustinus , Bachri Samsul , Nur-Alzair Nur-Alzair , Hendrik Benu Nithanel Mikael , Tambing Junus , Kuswandi Relawan , Khayati Lisna , Lekitoo Krisma
Published: March 2021

Trees are significant components of ecosystems built by several widespread species. For instance, Papua forest is known to comprise abiotic and biotic elements. Also, certain plants have grown in popularity to a point where they are discovered almost everywhere. The purpose of this study, therefore, was to investigate tree diversity, distribution, and the importance of conservation. Data were collected in four locations using a total of 24 sample plots spread across Idoor, Karst, Persemaian, and Torembi, where seven, four, seven, and five plots were allocated, respectively. These forests formed a mixed natural plantation comprising 76 species from 35 families. Furthermore, Idoor and Karst generated the highest species diversity and varied significantly compared to Persemaian, while Torembi showed similarities with the other three locations. This condition formed three ecosystem communities across Persemaian, Karst, Idoor, and Torembi. Also, the composition of the dominant species showed variations at the seedling and sapling levels believed to structure the understory, while the pole and tree levels characterized the overstory. The total species status was described as critically endangered (CR) of two species, vulnerable (VU) of six species, least concern (LC) of 28 species, and data deficient (DD) species. Therefore, location management is advised to not only pay significant attention in terms of economic benefits but also ecological, including the provisions for ex-situ and in-situ conservation to support sustainable forest management.
What gives a stroke publication impact? Assessing traditional and alternative metrics of scientific impact for papers published in the journal Stroke
Authors: Wong Li Siang , Drozdowska Bogna A , Doherty Daniel , Quinn Terence J
Published: March 2021

Background: The ‘impact’ of a scientific paper is a measure of influence in its field. In recent years, traditional, citation-based measures of impact have been complemented by Altmetrics, which quantify social media footprint. As authors and research institutions seek to increase their visibility both within and beyond the academic community, it is important to identify and compare the determinants of traditional and alternative metrics. We explored this using Stroke – a leading journal in its field.

Methods: We described the impact of original research papers published in Stroke (2015-2016) using citation count and Altmetric Attention Score (Altmetrics). Using these two metrics as our outcomes, we assessed univariable and multivariable associations with 21 plausibly relevant publication features. We set the significance threshold at p<0.01.

Results: Across 911 papers published in Stroke, there was an average citation count of 21.60 (±17.40) and Altmetric score of 17.99 (±47.37). The two impact measures were weakly correlated (r=0.15, p<0.001). Citations were independently associated with five publication features at a significance level of p<0.01: Time Since Publication (beta=0.87), Number of Authors (beta=0.22), Publication Type (beta=6.76), Number of Previous Publications (beta=0.01) and Editorial (beta=9.45). For Altmetrics, we observed a trend for independent associations with: Time Since Publication (beta=-0.25, p=0.02), Number of References (beta=0.32, p=0.02) and Country of Affiliation (beta=8.59, p=0.01). Our models explained 21% and 3% of variance in citations and Altmetrics, respectively.

Conclusion: Papers published in Stroke have impact. Certain aspects of content and format may contribute to impact, but these differ for traditional measures and Altmetrics, and explain only a very modest proportion of variance in the latter. Citation counts and Altmetrics seem to represent different constructs and, therefore, should be used in conjunction to allow a more comprehensive assessment of publication impact.
Supporting communities of practice – A Journey to effective problem-solving
Authors: Hanschke Christina , Baer James , Gangaramany Alok , Verheijen Janneke , Kilonzo Nduku , Okiya Bryan , Ranji Leonard Kibe , Amolo Stephen Amolo , Zwane Simon , Nkambule Rejoice , Buluma Violet , Ojoo Sylvia , Kim Susan , Kibwana Sharon , Dybul Mark , Kretschmer Steve
Published: March 2021

In contexts of scarce resources, varied assets, and diverse communities, engaging local stakeholders in the problem-solving process is critical to develop interventions for HIV prevention and treatment. Communities of practice (CoPs) – groups of people organized around a key purpose and a delivery point – can develop expertise in identifying their local community’s key challenges and selecting viable solutions. We propose a framework, adapted from the CoP model developed by Etienne Wenger, for systematically understanding the stages a CoP may go through as it develops its capacity to identify and solve problems and implement good practices. Our framework is based on the experience of practitioners of the LISTEN model (Local Initiatives Scaled Through Enterprise Networks) in eight local-level CoPs in Kenya and Eswatini. LISTEN seeks to help CoPs integrate continuous improvement processes, data, and human-centered design into their development and solutioning activities. The four stages in our framework for a CoP’s problem-solving journey are: 1) Community Identity: Identify and understand the CoP’s purpose and goals, and build rapport with its members and leaders; 2) Quick Win: Use a process of human-centered design to obtain a rapid and clear success in addressing a problem that the CoP has identified for itself and which it can tackle with its own resources; 3) Stewardship: Support the CoP in addressing more complex or long-term issues, including links to other CoPs at the local-community or higher levels to disseminate knowledge and obtain resources and support, where needed; and 4) Evolution: Support the CoP as it transitions into potentially new structures or functions. For each stage of the framework, we describe the kinds of support that may be provided to the CoP in the LISTEN model, and the types of tools that could be developed to assist them in problem-solving and in disseminating sustainable solutions.
Systemic inflammation is negatively associated with early post discharge growth following acute illness among severely malnourished children - a pilot study
Authors: Njunge James M. , Gonzales Gerard Bryan , Ngari Moses M. , Thitiri Johnstone , Bandsma Robert H.J. , Berkley James A.
Published: March 2021

Background: Rapid growth should occur among children with severe malnutrition (SM) with medical and nutritional management. Systemic inflammation (SI) is associated with death among children with SM and is negatively associated with linear growth. However, the relationship between SI and weight gain during therapeutic feeding following acute illness is unknown. We hypothesised that growth post-hospital discharge is associated with SI among children with SM.

Methods: We conducted secondary analysis of data from HIV-uninfected children with SM (n=98) who survived and were not readmitted to hospital during one year of follow-up. We examined the relationship between changes in absolute deficits in weight and mid-upper-arm circumference (MUAC) from enrolment at stabilisation to 60 days and one year later, and untargeted plasma proteome, targeted cytokines/chemokines, leptin, and soluble CD14 using multivariate regularized linear regression.

Results: The mean change in absolute deficit in weight and MUAC was -0.50kg (standard deviation; SD±0.69) and -1.20cm (SD±0.89), respectively, from enrolment to 60 days later. During the same period, mean weight and MUAC gain was 3.3g/kg/day (SD±2.4) and 0.22mm/day (SD±0.2), respectively. Enrolment interleukins; IL17-alpha and IL-2, and serum amyloid P were negatively associated with weight and MUAC gain during 60 days. Lipopolysaccharide binding protein and complement component 2 were negatively associated with weight gain only. Leptin was positively associated with weight gain. Soluble CD14, beta-2 microglobulin, and macrophage inflammatory protein 1 beta were negatively associated with MUAC gain only. Glutathione peroxidase 3 was positively associated with weight and MUAC gain during one year.

Conclusions: Early post-hospital discharge weight and MUAC gain were rapid and comparable to children with uncomplicated SM treated in the community. Higher concentrations of SI markers were associated with less weight and MUAC gain, suggesting inflammation negatively impacts recovery from wasting. This finding warrants further research on reducing inflammation on growth among children with SM.
Immune Response and Susceptibility to SARS-CoV2 Virus in Children
Authors: Merchan Maritza Angarita , Silva Rosa Isela Neira , Velandia Diana Paola López
Published: March 2021

The COVID-19 disease that was first discovered in Wuhan-China province, also called severe acute respiratory syndrome, is a serious public health concern in the 21st century. This disease affects the respiratory system and its causal agent is the SARS-CoV2 virus, which is part of the family of beta-corona viruses that many associate with the bat. This virus not only affects the population that is considered vulnerable but also affects young adults and children. The objective of the present review is to describe the characteristics of the immune response and susceptibility in children with SARS-COV2. We examined articles in the Elsevier, Google Scholar, PubMed and Scielo databases regarding the immune systems of children with the disease of COVID-19 and the physio-pathological mechanisms of SARS-CoV2 that contribute to illness in this population. Although the capacity of infection of SARS-CoV2 in children is very high, the mechanism of the virus against pathogenicity in this population group is not clear.
The objective of the present review is to describe the characteristics of the immune response and susceptibility in children with SARS-COV2.
Fano resonance sensing based on coupling of a sub-wavelength grating and an all-dielectric multilayer film under angle modulation
Authors: Chen Ying , Zhou Xinde , Xu Yangmei , Xiao Chunyan , Zhu Qiguang
Published: March 2021

Based on the diffraction effect of the waveguide grating, a hybrid structure of an all-dielectric multilayer film and a sub-wavelength dielectric grating is proposed. The discrete state provided in the sub-wavelength waveguide grating couples with the continuous state provided in the Fabry–Perot cavity (F–P cavity) containing the photonic crystal to form a Fano resonance. The relationship between the structural parameter and the incident angle is analyzed by numerical simulation. The result shows that the figure of merit (FOM) value is

533.2

R
I
U

−
1

. This structure provides an effective theoretical basis for the realization of Fano resonance in the all-dielectric sensing structure.
Optical image hiding based on spectrum encoding with structured illumination
Authors: Ruan Tianhao , Yang Dongyu , Shi Yishi
Published: March 2021

Structured illumination microscopy (SIM) is combined with optical image hiding for the first time, to the best of our knowledge. In a linear phase encoding system, secret information might be divulged with the input related to the correct image. In this paper, we propose an optical hiding method in which the concept of SIM is used to create reconstructed host images with an extended spectrum. This method not only improves the security of the image hiding system, but also creates a new perspective for optical image hiding and makes solutions for the defect of the linear phase encoding system.
Photoacoustic imaging in monitoring of compartmental syndrome in rat extremities
Authors: Li Caiyun , Du Feiya , Zhou Haiying , Lu Hui
Published: March 2021

Muscle ischemia injury is the essence of compartment syndrome (CS). Photoacoustic (PA) imaging can monitor hemoglobin concentration changes in ischemic tissue by determining the state of light-absorbing molecules. This study investigated whether PA imaging can provide accurate CS monitoring. Rats received compression on the lower hind limb for 3 h to induce ischemia injury, followed by PA imaging of desired muscles for 24 h. PA intensities of the injured group were significantly lower than that in the control group. Histology findings correlated well with the PA findings. The results demonstrated that PA imaging could be a noninvasive and timely tool for clinically monitoring CS.
Compact fiber-coupled UV-NIR hyperspectral imaging sensor for characterizing ultra-high temperature ceramic materials
Authors: Hsu Paul S. , Lauriola Daniel , Frueh Samuel , Chen Xiangling , Cinibulk Michael K. , Roy Sukesh
Published: March 2021

A compact fiber-coupled hyperspectral imaging sensor (HSIS) operating within the range of ultraviolet to near-infrared (UV–NIR) wavelengths is designed and developed for the remote recording of two-dimensional (2D) spectrally resolved thermal radiation and chemiluminescent emission from ultra-high-temperature ceramics (UHTCs). Using simulations, the entire system is optimized to improve the collection efficiency and minimize aberrations. The design, construction, and characterization of the HSIS sensor are discussed in detail. We present the 2D spectrally resolved measurements of the simultaneous thermal radiation andBO2∗chemiluminescent emission from a commonly used UHTC (HfB2-SiC) material under high-heat-flux conditions. Our results show thatBO2∗chemiluminescence corresponds directly to material ablation and can be used to track the formation of the protective heat-resistant glass/oxide layer. Furthermore, the temperature measurements demonstrate the heat distribution properties of the sample and indicate the locations at whichBO2∗chemiluminescence is possible. These results highlight the application prospects of the compact fiber-coupled HSIS for high-temperature material characterization in practical arc-jet facilities with limited optical access.
RETRACTED: Ultra-wideband terahertz absorber based on graphene modulation
Authors: Li Xiaogang , Feng Guang , Lin Suben
Published: March 2021

Here we propose an ultra-wideband terahertz absorber (UWTA), which is
composed of substrate, dielectric, and five-layer graphenes. By
changing the chemical potential of graphene, the absorption
coefficient of UWTA is larger than 0.9 from 1.51–8.25 THz. The
absorption bandwidth is 6.74 THz. The relative bandwidth is 138.1%,
and the modulation depth is 78.7%. Meanwhile, the number of each layer
of graphene can be adjusted to achieve high absorption bandwidth,
relative bandwidth, and modulation depth. Besides, due to the tunable
chemical potential of graphene, the absorption coefficient can be
adjusted to make up the manufacturing error.
Dependence of conduction characteristics on compensation type and lattice structure of SiC photoconductive semiconductor switches
Authors: Feng Zhuoyun , Xiao Longfei , Luan Chongbian , Li Yangfan , Sha Huiru , Li Hongtao , Xu Xiangang
Published: March 2021

Semi-insulating (SI) SiC photoconductive semiconductor switches were prepared using two compensation mechanisms: namely vanadium dopants compensation (4H- and 6H-SiC) and deep level defect compensation (4H-SiC). The bias voltage and current of the high-purity (HP) SI 4H-SiC photoconductive semiconductor switch (PCSS) with a channel length of 1 mm reached 24 kV and 364 A, respectively, and the minimum on-state resistance of approximately 1 Ω was triggered by laser illumination at a wavelength of 355 nm. The experimental results show that, in this case, the on-state characteristics of HP 4H-SiC PCSS are superior to those of the vanadium-doped(VD) 4H and 6H-SiC PCSS devices. HP 4H-SiC PCSS shows remarkable waveform consistency. Unlike for VD 4H and 6H-SiC PCSS, the current waveform of HP 4H-SiC PCSS exhibits a tailing phenomenon due to its longer carrier lifetime.
Three-mode multiplexer and demultiplexer based on the Mach-Zehnder interferometer
Authors: Ahmmed Kazi Tanvir , Chan Hau Ping , Li Binghui
Published: March 2021

Mode division multiplexing (MDM) is a groundbreaking technology that meets future optical network capacity demand in conjunction with the wavelength multiplexing division (WDM). In our work, we propose a three-mode mux/demux device that comprises a three-arm unbalanced Mach-Zehnder interferometer (MZI) inserted between three Y-junctions. The device is compact and offers a high extinction ratio. Moreover, it has a simple structure. The maximum simulated excess loss is 0.37 dB with a minimum extinction ratio of 25.71 dB in the 1.550 µm wavelength, in different multiplexing and demultiplexing conditions. The device will find application in expanding the fiber transmission capacities in future MDM systems.
Bedeutung der psychologischen Sicherheit für die Innovationsfähigkeit von Organisationen
Authors: Hoffmann Bettina , Hanisch Dominik
Published: March 2021

The future of a company depends to a large extent on whether it can establish market-relevant innovations. In order to develop innovations and thus build sustainable business models, companies should operate their own innovation management. This not only systematically develops innovations, it also creates organizational framework conditions so that an innovative company culture can flourish better. But not only the organizational aspects lead to an increased ability to innovate, it is also the interpersonal interactions that make a decisive contribution. The quality and the result of human interaction depends in a decisive way on how safe people feel in the current group setting. The more confident they feel, the more the group members dare to ask questions, admit weaknesses and mistakes, contribute ideas and question the status quo - the foundations for innovation. If a company wants to develop the basis for psychological safety, then it is important to create suitable conditions in order to be able to make full use of the performance potential of all employees. Freedom, trust and participation are particularly important in innovation in order to promote creativity and the ability to innovate.
Candidate name order effects in New Hampshire: Evidence from primaries and from general elections with party column ballots
Authors: MacInnis Bo , Miller Joanne M. , Krosnick Jon A. , Below Clifton , Lindner Miriam
Published: March 2021

Research in a few U.S. states has shown that candidates listed first on ballots gain extra votes as a result. This study explored name order effects for the first time in New Hampshire, where such effects might be weak or entirely absent because of high political engagement and the use of party column ballots. In general elections (in 2012 and 2016) for federal offices and the governorship and in primaries (in 2000, 2002, and 2004), evidence of primacy effects appeared in 86% of the 84 tests, including the 2016 presidential race, when Donald Trump gained 1.7 percentage points from first listing, and Hillary Clinton gained 1.5 percentage points. Consistent with theoretical predictions, primacy effects were larger in primaries and for major-party candidates in general elections than for non-major-party candidates in general elections, more pronounced in less publicized contests, and stronger in contests without an incumbent running. All of this constitutes evidence of the reliability and generalizability of evidence on candidate name order effects and their moderators.
Schizophrenic patients with type 2 diabetes: An 8-year population-based observational study
Authors: Jaworski Mariusz , Panczyk Mariusz , Śliwczyński Andrzej , Brzozowska Melania , Gotlib Joanna
Published: March 2021

This paper presents a realistic evaluation of the prevalence of type 2 diabetes mellitus (T2DM) among Polish schizophrenic patients who have sought treatment through the Polish National Health Fund in the years 2010–2017. Data from the National Health Fund database was used and T2DM and schizophrenia groups were defined according to International Classification of Diseases (ICD-10) codes. Demographic data were collected from the web page of Statistics Poland (GUS). The annual prevalence of T2DM and schizophrenia was estimated, and the age groups were categorised into eight sets. The incidence of schizophrenia in T2DM patients in the years 2010–2017 was measured, including relative risk and 95% confidence interval (95% CI). The incidence of T2DM has been assessed in various subtypes of schizophrenia. In the eight years of follow-up study, 1,481,642 patients with schizophrenia were included, of which 185,205 were also diagnosed with T2DM. This accounted for 12.50% of all patients with schizophrenia. The trend of comorbid schizophrenia (F20) and T2DM (E11) in the general population of patients with schizophrenia, who sought treatment through the National Health Fund, was relatively stable in the years 2010–2017. The relative risk of T2DM in those with schizophrenia was 8.33 (95% CI 8.23–8.43) in 2017. Taking actions to enable the detection of diabetes in patients with concomitant schizophrenia is well-grounded, although these actions should be gender-dependent. There is also a need to take adequate actions to improve the efficiency of diabetological care among patients with schizophrenia.
Russian web series: Mastering the new format
Authors: Prokhorov Artem
Published: March 2021

The article studies how domestic screenwriters and directors are exploring the web series format that started actively developing in Russia only five years ago. Both series produced for major internet platforms and indie projects created by independent studios in the past five years are reviewed. The article analyses how Russian authors understand and take into account in their work the specifics of the new field, as well as the format-forming features of web series that have developed abroad. Such aspects as the lack of censorship, freedom from severe restrictions on story genres and heroes’ types have a significant impact on the dramaturgy of native web series. Those are the things that determine the attractiveness of this new format for experienced Russian authors moving to the internet from related fields: cinema and television. The results of the study show that Russian dramatists and directors rely on foreign experience of creating web series, but at the same time they try to modify certain features of this format and sometimes manage to find their own unique solutions.
Politics of folk psychology: Believing what others believe
Authors: Tooming Uku
Published: March 2021

In this paper, I argue that by attributing beliefs the attributer is pushed toward taking a stand on the content of those beliefs and that what stand they take partially depends on the relationship between the attributer and the attributee. In particular, if the attributee enjoys a higher social standing than the attributer, the latter is disposed to adopt the attributed belief, as long as certain other conditions are met. I will call this view the Adoption-by-Attribution model. Because of the non-epistemic influence that derives from the relation of inequality, belief attribution can reinforce the existing unequal power relations and contribute to epistemic injustice.
The epistemic schism of statistical mechanics
Authors: Anta Javier
Published: March 2021

In this paper I will argue that the two main approaches to statistical mechanics, that of Boltzmann and Gibbs, constitute two substantially different theoretical apparatuses. Particularly, I defend that this theoretical split must be philosophically understood as a separation of epistemic functions within this physical domain: while Boltzmannians are able to generate powerful explanations of thermal phenomena from molecular dynamics, Gibbsians can statistically predict observable values in a highly effective way. Therefore, statistical mechanics is a counterexample to Hempel's (1958) symmetry thesis, where the predictive capacity of a theory is directly correlated with its explanatory potential and vice versa.
Running it up the flagpole to see if anyone salutes: A response to Woodward on causal and explanatory asymmetries
Authors: Elliott Katrina , Lange Marc
Published: March 2021

Does smoke cause fire or does fire cause smoke?  James Woodward’s “Flagpoles anyone? Causal and explanatory asymmetries” argues that various statistical independence relations not only help us to uncover the directions of causal and explanatory relations in our world, but also are the worldly basis of causal and explanatory directions.  We raise questions about Woodward’s envisioned epistemology, but our primary focus is on his metaphysics.  We argue that any alleged connection between statistical (in)dependence and causal/explanatory direction is contingent, at best.  The directions of causal/explanatory relations in our world seem not to depend on the statistical (in)dependence relations in our world (conceived of either as frequency patterns or as relations among chances).  Thus, we doubt that statistical (in)dependence relations are the worldly basis of causal and explanatory directions.
O SELF E A ATUAÇÃO: FERRAMENTAS PARA CONSCIÊNCIA E CRIAÇÃO NO TRABALHO DE ATOR
Authors: Barone Luciana Paula Castilho
Published: March 2021

Este artigo aborda ferramentas para o trabalho criativo de ator a partir do aprofundamento do conhecimento de si. O texto apresenta o relato da experiência pedagógica da autora em um curso de extensão (2018), que propôs como etapa de projeto de pesquisa focar na relação entre a ampliação da consciência psicofísica do ator e a criação de um personagem. Foram investigadas práticas de meditação ativa, de máscara neutra, da Educação Somática (pelos sistemas corporais do Body-Mind Centering™) e de elementos da técnica de atuação de Michael Chekhov. A estreita relação entre imaginação e percepção foi enfocada tanto como base para a ampliação da consciência corporal e psíquica quanto como fonte de criação psicofísica.
JOGOS, AFETOS E POTÊNCIAS: NOVIDADES APARECIDAS NO TEATRO DO OPRIMIDO NA SAÚDE MENTAL
Authors: Francisco Deise Juliana , Lins Claudete Do Amaral
Published: March 2021

Neste artigo, apresentamos a potência que os jogos, os diálogos e a atuação cênica produziram nos corpos de pessoas com sofrimento psíquico durante oficinas de teatro do oprimido em um Centro de Atenção Psicossocial (CAPS) da cidade de Maceió. A pesquisa teve a duração de sete meses, na qual participaram 30 usuários. O estudo articulou o encontro entre o teatro do oprimido, a terapia ocupacional, a saúde mental e a educação com o objetivo de conhecer como o teatro do oprimido operou na produção de subjetividade e na singularização de pessoas com sofrimento psíquico. A fundamentação da pesquisa se deu por meio da teoria dos afetos de Espinosa. Os resultados apontam para a potência dos jogos, a subjetividade e as singularidades vivenciadas, a construção da história e os efeitos produzidos nos participantes e no público.
MOVIMENTO CULTURAL ARTE MANHA: LUGAR DA ARTE, CORPO E MEMÓRIA AFRO-INDÍGENA NA ESCOLA, CARAVELAS, BA
Authors: Ferreira Maria de Fátima De Andrade
Published: March 2021

Neste artigo, apresento um recorte da etnografia realizada sobre relações interétnicas com um grupo de pessoas que se autodeclaram afro-indígena, em Caravelas, BA e pertence ao Movimento Arte Manha, criado em 1988, com objetivo de luta e resistência negra e indígena. Nele, procuro descrever o lugar da arte, corpo e memória afro-indígena no movimento e na escola, tratando de redes de sociabilidades, “encontros” e zonas de contato. A escolha do tema, como recorte para este trabalho, é o fato de que o grupo trouxe provocações, quando traz repertórios sócio-históricos de suas culturas de origem, a valorização das africanidades do legado africano e a cultura indígena e, por meio de estratégias, se apropria da arte, do corpo e da memória (BOSI,1994) como instrumentos de luta, resistência e práticas educativas. É assim que os afro-indígenas de Caravelas conduzem as teias da memória e a construção de um passado que, por sua vez, é também fruto de criação e de novas experiências subjetivas e afro-indígenas, focando o corpo como centro das políticas, no sentido de (des)racializar e pluralizar espaços sociais, arte, objetos e coisas e traçam esse percurso em busca da memória e da ancestralidade. Na escola, as ações dependem da “necessidade” do grupo, chamadas de interdisciplinares, como entalhe em madeira, desenhos, danças africanas indígenas, roda de conversa para discutir modos de vida afro-indígena. E a escola é espaço privilegiado à realização de ações artístico-culturais. O espaço de trocas de saberes e conhecimentos se estabeleciam entre os participantes de modo transversal.
EDUCAÇÃO, CORPO E POESIA: REFLEXÕES SOBRE AS VINTE E NOVE CARTAS, DE SÔNIA MACHADO DE AZEVEDO (OU UMA CARTA PARA SÔNIA)
Authors: Gonçalves Jean Carlos
Published: March 2021

Educação, Corpo e Poesia: reflexões sobre As Vinte e Nove Cartas, de Sônia Machado de Azevedo (ou Uma Carta para Sônia
Climate change among the least developed
Authors: Erdélyi Dániel
Published: March 2021

Climate Change is a global phenomenon that has geographically varying impacts. To fulfill Hungary’s climate obligations and implement effective adaptation practices, we need to understand the working mechanism of climate change in smaller territorial units. Regional differentiating is of paramount importance in regional strategy making. As part of an on-going research that aims to identify the local impacts of climate change and the local answers against it, this paper is analyzing the local properties and opportunities of the case study of Sarkad LAU 1 region. Sarkad region is one of the most underdeveloped yet one of the richest areas in natural resources like biodiversity, landscape, and cultural heritage. This duality highlights the need to act against the negative outcomes of climate change. The local main climate effects of climate change are indicated by using the cartograms of the National Adaptation and Geoinformation System database. It is crucial to identify the local vulnerability in order to take effective measurements promoting adaptivity and mitigation. As a result of the research, the unique properties of the LAU 1 region the ways of adaptation in connection with climate change are indicated.
Investigation of eating behaviour among primary school children with Dutch Eating Behaviour Questionnaire (DEBQ)
Authors: Pető Dalma
Published: March 2021

There are many factors that influence children's eating, and the role of parents is outstanding. During our research, we studied children's eating behaviour and were also interested in parents' attitudes towards their children's eating behaviour. In the course of our investigation, we used a part of the already validated questionnaire, DEBQ. Our sample was made up of primary school children and their parents. A total of 172 children and their parents completed the questionnaire. The results show that parents consider the child's nutritional characteristics differently than the child itself. We found that parents overestimate their children's self-control about delicious food.
Üzleti modellek a piaci változások tükrében
Authors: Könczöl Erzsébet
Published: March 2021

Az üzleti modell gyakran használt fogalma az üzleti életnek és a szakmai írásoknak, a kifejezés mögött azonban igen sokféle értelmezés rejlik. A cikkben a szerző röviden összegzi az üzleti modell fogalmát, főbb tényezőit és a vállalati stratégiához való viszonyát. A fő kérdés pedig, melyet az írásban vizsgál, a következő: a piaci környezet utóbbi időben végbement drámai változásai, a hatékony piacokról vallott korábbi feltételezések megváltozása és a nem piaci koordinációs eszközök arányának növekedése megjelenik-e a vállalatok üzleti modelljeinek változásában? Áttekinti azokat a módszereket, amelyekkel a vállalatok a piaci változásokra üzleti modelljeik egyes területein reagálnak. Végezetül külön figyelmet fordít arra a kérdésre, hogy felfedezhetők-e iparági sajátosságok az üzleti modellek változtatása során.
A tisztességes piaci magatartás kockázatai – adócsalás, adóelkerülés
Authors: Szántó Richárd
Published: March 2021

Számos elméleti értekezés foglalkozik azzal a kérdéssel, hogy mit kockáztat az a piaci szereplő, aki tisztességtelenül viselkedik. Ezek a tanulmányok elsősorban a tisztességtelen piaci magatartást folytató szereplő kockázatait tárják fel, és legtöbbször figyelmen kívül hagyják azt a körülményt, hogy a tisztességtelen piaci magatartásban rejlő kockázatok és bizonytalanságok nemcsak az inkorrekt módon eljáró szereplőket érintik, hanem azokat is, akik ebben a piaci környezetben tisztességesen igyekeznek viselkedni. A tisztességtelen magatartás fajtáit hosszasan lehetne sorolni (adócsalás/adóelkerülés, erőfölénnyel való visszaélés, fogyasztók megtévesztése, korrupció, kartell stb.), jelen cikkben azonban ezek közül egyetlenegy jelenségre, az adócsalásra, illetve adóelkerülésre összpontosít a szerző. Ennek oka kettős: egyrészt vélhetően az adócsalás a legelterjedtebb tisztességtelen magatartási forma, amely a piaci működés során jelentkezik, másrészt minden bizonnyal erről a jelenségről rendelkezünk a legtöbb empirikus vizsgálattal. A cikk végén a szerző általánosítja az adócsalás kapcsán feltárt kockázatokat és bizonytalanságokat a szélesebb értelemben vett tisztességtelen piaci viselkedésre vonatkoztatva.
On Some Statistical Properties of GRBs with Measured Redshifts Having Peaks in Optical Light Curves
Authors: Beskin Grigorii , Greco Giuseppe , Oganesyan Gor , Karpov Sergey
Published: March 2021

We studied the subset of optical light curves of gamma-ray bursts with measured redshifts and well-sampled R band data that have clearly detected peaks. Among 43 such events, 11 are promptoptical peaks (P), coincident with gamma-ray activity, 22 are purely afterglows (A), and 10 more carrythe signatures of an underlying activity (A(U)). We studied pair correlations of their gamma-ray andoptical parameters, e.g. total energetics, peak optical luminosities, and durations. The main outcomeof our study is the detection of source frame correlations between both optical peak luminosity and total energy and the redshift for classes A and A(U), and the absence of such a correlation for class Pevents. This result seems to provide evidence of the cosmological evolution of a medium around the burst defining class A and A(U) energetics, and the absence of cosmological evolution of the internal properties of GRB engines. We also discuss some other prominent correlations.
Study of Silicon Photomultipliers for the GRIPS Calorimeter Module
Authors: Ulyanov Alexei , Hanlon Lorraine , McBreen Sheila , Foley Suzanne
Published: March 2021

GRIPS is a proposed gamma-ray (200 keV to 80 MeV) astronomy mission, which incorporates a pair-creation and Compton scattering telescope, along with X-ray and infrared telescopes. It will carry out a sensitive all-sky scanning survey, investigating phenomena such as gamma-ray bursts, blazars and core collapse supernovae. The main telescope is composed of a Si strip detector surroundedby a calorimeter with a fast scintillator material. We present the initial results of a study which considers the potential use of silicon photomultipliers in conjunction with the scintillator in the GRIPS calorimeter module.
Growth and Physical Structure of Amorphous Boron Carbide Deposited by Magnetron Sputtering on a Silicon Substrate with a Titanium Interlayer
Authors: Caniello Roberto , Vassallo Espedito , Cremona Anna , Grosso Giovanni , Dellasega David , Canetti Maurizio , Miorin Enrico
Published: March 2021

Multilayer amorphous boron carbide coatings were produced by radiofrequency magnetron sputtering on silicon substrates. To improve the adhesion, titanium interlayers with different thickness were interposed between the substrate and the coating. Above three hundreds nanometer, the enhanced roughness of the titanium led to the growth of an amorphous boron carbide with a dense and continuing columnar structure, and no delamination effect was observed. Correspondingly, the adhesion of the coating became three time stronger than in the case of a bare silicon substrate. Physical structure and microstructural proprieties of the coatings were investigated by means of a scan electron microscopy, atomic force microscopy and X-ray diffraction. The adhesion of the films was measured by a scratch tester.
The Construction of the Fast Resistive Bolometer for a SXR Measurement on the GIT-12 Facility
Authors: Cikhardt Jakub , Klír Daniel , Kubeš Pavel , Kravárik Josef , Rezác Karel , Šíla Ondrej , Shishlov Alexander V. , Labetsky Alexey Yu.
Published: March 2021

A lot of kinds of instruments are used for the SXR measurement at pulsed power facilities, but most of them are difficult to calibrate absolutely. For the determination of the energy of SXR radiated by the discharge on Z-pinches, it is possible to use the bolometer which can be calibrated analytically. The bolometer can be constructed with the sufficient sensitivity and, at the same time, with the time resolution in the order of nanoseconds. This bolometer was designed and constructed for the measurement on the 5MA facility GIT-12 at the Institute of High Current Electronics (IHCE) of the Siberian Branch Russian Academy of Sciences in Tomsk. The experiments on GIT-12 with the neon and deuterium gas-puff load were diagnosed by the copper bolometer with the time resolution of 4 ns and the sensitivity of 12 V cm2 J-1.
Physical and Electrical Properties of Yttria-Stabilized Zirconia Thin Films Prepared by Radio Frequency Magnetron Sputtering
Authors: Golosov Dmitriy A. , Zavatskiy Sergey M. , Melnikov Sergey N.
Published: March 2021

This paper presents the electrophysical characteristics of a 7 mol.% yttria-stabilized zirconia (YSZ) thin film deposited by radio-frequency magnetron sputtering. In order to form the crystallinestructure, the deposited films were annealed in air over a temperature range of 700 ÷ 900 °C. By XRD analysis it was established that as the deposited films were amorphous, they crystallized into a pure cubic structure as a result of annealing in air at a temperature above 820 °C.The electrophysical properties of YSZ films were investigated on structures such¨as Ni/YSZ/Pt/Ti/Si and Ni/YSZ/Si. Film features ? > 20 and tg ? < 0.05 were obtained. An estimate of the capacity-voltage characteristic proved that the Ni/YSZ/Si structures possessed a hysteresis. This hysteresis resulted from the drift of the mobile ions in the YSZ film. High-temperature ionic conductivity of the stabilized zirconia was determined by the measurements of the electric resistivity of the YSZ films at 1 kHz over the temperature range from ambient to 800 °C. The YSZ film conductivity obtained was 1.96 × 10-2 S/cm under 800 °C.
Long-Lived Plasma Process, Created by Impulse Discharge in Micro-Disperse Droplet Environment
Authors: Olszewski Serge , Lisitchenko Tamara , Yukhymenko Vitalij
Published: March 2021

The processes of organic compound (phenol and cation-active surfactants) destruction in water solutions, which stay under the influence of plasma treatment have been investigated in different dynamic plasma-liquid systems (PLS) with discharges in droplet micro-disperse environments (DMDE). The long-lived plasma process with separate spectral properties has been observed for pulsed discharge in DMDE. The approximate computer model is being proposed for a description of this effect. According to the introduced model this long-lived process is the aggregation of correlated discharges between charged droplets.
Modification of Composite Material Fillers by Atmospheric Plasma Discharge
Authors: Tichy David , Hajkova Pavlina
Published: March 2021

This work is focused on the observation of the influence of cold atmospheric dielectric barrier discharge (DBD) on a modification of textile samples. The main objective of the experiment is to research wettability change of textiles modified by different exposure times and also the observation of the influence of a modification ageing effect. An ambient air was used as a working gas for DBD plasma. The wettability evaluation was carried out by a drop method, in which an imprint of the dropwas observed on the textile surface during various time intervals. An ageing effect of the modification was monitored within an interval of 28 days. Considerable increase of wettability of all modified samples has been proved. A fibre surface analysis was carried out by means of SEM.
Stimulated Raman Backscattering in Plasma — a Promising Tool for the Generation of Ultra-High Power Laser Beams
Authors: Turčičová Hana , Huynh Jaroslav
Published: March 2021

In the last fifteen years stimulated Raman backscattering (SRBS) in plasma has been intensively elaborated as a promising tool on the way towards high intense lasers. There are several advantages of this technique in comparison to the world-wide used the CPA-Chirped Pulse Amplification technique for a laser amplification. We present the principle of the SRBS technique, the best results so far obtained in theory and experiment, and a possible SRBS project at the PALS Research Centre in Prague.
Ignition Features of Plasma-Beam Discharge in Gas-Discharge Electron Gun Operation
Authors: Tutyk Valery A. , Ovcharuk Anatoliy N. , Gasik Michail I. , Maslenikov Dmitriy V.
Published: March 2021

The current paper presents the results of experimental researches to determine the mode features of plasma-beam discharge (PBD) generation by an electron beam injected by a low-vacuum gasdischarge electron gun (LGEG) with the cold cathode and hollow anode on the basis of the high-voltage glow discharge and in the range of helium pressure of P ? 10 ÷ 130 Pa. The PBD boundaries and their dependences on parameters of an electron beam are found. The influence of PBD on parameters of low-vacuum gas-discharge electron gun is revealed. It causes an avalanche increase of electron beam current and burning of plasma-beam discharge in the whole space of the vacuum chamber volume and generation of electromagnetic radiation is revealed. Achieved results will be used for implementation of various vacuum technologies in the medium of reaction gas and generated electromagnetic radiation.
Characterization of Human Gait using Fuzzy Logic
Authors: Kutilek Patrik , Viteckova Slavka , Svoboda Zdenek
Published: March 2021

In medical practice, there is no appropriate widely-used application of a system based on fuzzy logic for identifying the lower limb movement type or type of walking. The object of our study was to determine characteristics of the cyclogram to identify the gait behavior by using a fuzzy logic system. The set of data for setting and testing the fuzzy logic system was measured on 10 volunteers recruited from healthy students of the Czech Technical University in Prague. The human walking speed was defined by the treadmill speed, and the inclination angle of the surface was defined by the treadmill and terrain slope. The input to the fuzzy expert system is based on the following variables: the area and the inclination angle of the cyclogram. The output variables from the fuzzy expert system are: the inclination angle of the surface, and the walking speed. We also tested the method with input based on the angle of inclination of the surface and the walking speed, and with the output based on the area and the inclination angle of the cyclogram. We found that identifying the type of terrain and walking speed on the basis of an evaluation of the cyclogram could be sufficiently accurate and suitable if we need to know the approximate type of walking and the approximate inclination angle of the surface. According to the method described here, the cyclograms could provide information about human walking, and we can infer the walking speed and the angle of inclination of the terrain.
Plasma–Surface Interactions Under High Heat and Particle Fluxes
Authors: Temmerman Gregory De , Bystrov Kirill , Liu Feng , Liu Wei , Morgan Thomas , Tanyeli Irem , Berg Miranda van den , Xu Haiyan , Zielinski Jakub
Published: March 2021

The plasma-surface interactions expected in the divertor of a future fusion reactor are characterized by extreme heat and particle fluxes interacting with the plasma-facing surfaces. Powerful linear plasma generators are used to reproduce the expected plasma conditions and allow plasma-surface interactions studies under those very harsh conditions. While the ion energies on the divertor surfaces of a fusion device are comparable to those used in various plasma-assited deposition and etching techniques, the ion (and energy) fluxes are up to four orders of magnitude higher. This large upscale in particle flux maintains the surface under highly non-equilibrium conditions and bring new effects to light, some of which will be described in this paper.
Generalized Continuity Equation for Quasi-Hermitian Hamiltonians
Authors: Hammou Amine B.
Published: March 2021

The continuity relation is generalized to quasi-Hermitian one-dimensional Hamiltonians. As an application we show that the reflection and transmission coefficients computed with the generalized current obey the conventional unitarity relation for the continuous double delta function potential.
Weakly Ordered A-Commutative Partial Groups of Linear Operators Densely Defined on Hilbert Space
Authors: Janda Jirí
Published: March 2021

The notion of a generalized effect algebra is presented as a generalization of effect algebra for an algebraic description of the structure of the set of all positive linear operators densely defined on a Hilbert space with the usual sum of operators. The structure of the set of not only positive linear operators can be described with the notion of a weakly ordered partial commutative group (wop-group).Due to the non-constructive algebraic nature of the wop-group we introduce its stronger version called a weakly ordered partial a-commutative group (woa-group). We show that it also describes the structure of not only positive linear operators.
Inherited Properties of Effect Algebras Preserved by Isomorphisms
Authors: Paseka Jan , Riečanová Zdenka
Published: March 2021

We show that isomorphism of effect algebras preserves properties of effect algebras derived from effect algebraic sum ? of elements. These are partial order, order convergence, order topology, existence of states and other important properties. However, there are properties of effect algebras for which the preservation of the ?-operation is not substantial and they need not be preserved.