bluuebunny/crossref_metadata_2025 huggingface dataset:
The Image of a Solo Instrument Player as a Media Celebrity in the 21st Century
Authors: Gabryelczak-Paprocka Marta
Published: December 2020

In the article entitled The Image of a Solo Instrument Player as a Media Celebrity in the 21st Century, the author analyses the profiles of three musicians promoted by the contemporary media. These artists are: Lola Astanova, Stjepan Hauser and David Garrett. All of them, apart from the fact they are technically skilful performers, are also media personalities. They combine classical playing style with pop-culture image and visual setting of their performances. The author attempts to uncover the sources of their popularity and explain the mechanisms how the demand for the artistic activity of instrumentalists creating art (both music interpretation and the widely understood setting of a performance) synthetising tradition and innovativeness is generated. The described phenomena include the topics related to: the specificity of the images of celebrity instrument players and their function in the society, the homogenous culture of the 21st century, the widely-understood media coverage, consumerism, etc. The article has two parts. The first part is theoretical and it is based on the analysis and description of academic literature connected with the chosen subject matter referring to sociological topics and modern tendencies connected with culture. Another point in this section of the article is the presentation of the profiles of the selected artists. The second part is the report from the academic study conducted by the author of the article. It is a description of interviews with responders who wanted to share their opinions about the recordings of Astanova, Hauser and Garrett which were presented to them. The interviews were conducted by means of the social media and phone. The studies showed how different the impressions related to the same recordings might be even in a small group of respondents. These conclusions might serve as an inspiration for the development of research studying the influence of transformations taking place in modern culture on the tastes of audiences and the actual demand for artists who are well-adjusted to the requirements of modern audiences in terms of their image.
Ekspozycja na pole elektromagnetyczne podczas użytkowania pojazdów samochodowych z napędem elektrycznym lub hybrydowym
Authors: Gryz Krzysztof , Karpowicz Jolanta , Zradziński Patryk , Tokarski Tomasz , Kapica Łukasz
Published: December 2020

The rapid development of e-mobility technology and the systematically increasing number of fully electric or hybrid cars does cause the increase in the number of electromagnetic field sources and electromagnetic emissions in the environment. The article presents the results of the recognition and evaluation of the exposure to electromagnetic field related to the use of fully electric or hybrid passenger cars in the context of literature data and own research.
The effect of electrolyte composition
on the plasma electrolyte oxidation and
phase composition of oxide ceramic
coatings formed on 2024 aluminium alloy
Authors: Posuvailo V.M. , Kulyk V.V. , Duriagina Z.A. , Koval’chuck I.V. , Student M.M. , Vasyliv B.D.
Published: December 2020

Purpose: Purpose of this work is to analyse the process of synthesis of oxide ceramic
coatings in plasma electrolytes on 2024 aluminium alloy and to form an electrolyte which
allows to reduce energy consumption for the coating formation.
Design/methodology/approach: The oxide ceramic coatings were synthesized on 2024
aluminium alloy. The coatings were formed by the alternate application of anode and cathode
pulses to the sample. X-ray diffraction analysis of coatings was performed on a DRON-3.0
X-ray diffractometer using CuKα radiation. The thickness of the coatings was determined
using a CHY TG-05 thickness gauge. The porosity of the coatings was investigated by
analysing the micrographs of the plasma electrolyte oxidation (PEO) coatings obtained on a
scanning electron microscope at ×500 magnification using the image processing technique.
Findings: The electrolyte with 5 g/l H2O2 additive have been elaborated as an optimal
composition for synthesis of a coating with an increased content of corundum (α-Al2O3) as
compared to a coating synthesized in the same mode in the 3KOH+2Na2SiO3 electrolyte
without H2O2. This synthesis mode allows obtaining a coating with a high corundum content
at low energy consumption.
Research limitations/implications: For further optimization of the synthesis modes,
it is necessary to analyse the influence of the phase composition and porosity of the obtained
oxide ceramic coatings on their microhardness, wear resistance, and corrosion resistance.
Practical implications: Based on the developed modes of synthesis of the coatings,
it will be possible to obtain wear and corrosion resistant oxide ceramic coatings
with predetermined functional properties and to reduce energy consumption for their
formation.
Originality/value: Methods for accelerating the formation of coatings have been proposed
and tested, in particular, by adding various amounts of hydrogen peroxide to the electrolyte.
The content of oxides in the obtained coatings, in particular, their ratios at various
concentrations of hydrogen peroxide in the electrolyte, were determined by X-ray phase
analysis. The modes of synthesis of the coatings were developed which allow obtaining a
continuous coating without cracks with simultaneous decreasing porosity from 4.32% to
3.55–3.53%.
Improvement of the approach to
hazard identification and industrial
risk management, taking into account
the requirements of current legal and
regulatory acts
Authors: Kruzhilko O. , Maystrenko V. , Polukarov O. , Kalinchyk V.P. , Shulha A. , Vasyliev A. , Kondratov D.
Published: December 2020

Purpose: Improving the systematic approach to planning and rationalizing labour
protection measures at oil and gas enterprises, based on the results of hazard identification
and industrial risk assessment. At the same time, the main task of the risk management
process is to ensure the rights of employees guaranteed by the current legislation, namely,
to create proper, safe and healthy working conditions.
Design/methodology/approach: A comparative legal method for identifying the
features of European and Ukrainian legislation in the occupational safety and health field;
a structural-logical method for determining the main directions for the further development
of the occupational safety and health management system at enterprises; analysis and
generalization of well-known scientific results on the research topic; statistical analysis
to identify the relationship between the industrial risk' level and various factors that may
affect its value; applied systems analysis and mathematical modelling method for new
methodological approaches' development to assessing of hazards' likelihood and their
consequences' severity were used. The basis for improving the systematic approach
to planning and rationalizing labour protection measures is based on the standard IEC
61882:2001. The statistics are taken from the "Messages" information system, which
operates in the State Service of Ukraine on Labour and is designed to collect and process
data on occupational injuries.
Findings: An analysis of the current legislative and regulatory acts showed promising
directions for their improvement. A mathematical model for scoring industrial risk is
proposed, which takes into account the relationship between industrial risk and preventive
measures and the time of their implementation. The calculation system developed on the
basis of the proposed model provided a reduction in the time for processing data and
calculating the values of industrial risks by 20...25%.
Research limitations/implications: Statistical data on industrial injuries at enterprises
of the oil and gas industry of Ukraine for 2018-2019 were used.
Practical implications: Implementation of the proposed systematic approach to the
organization of occupational safety and health management at enterprises has shown its
simplicity and effectiveness, which can induce employers to finance reasonable and timely
preventive measures.
Originality/value: The method has been improved by decreasing the discreteness step
in the assessment of industrial risk components, which has increased its accuracy; by
developing a mathematical model for calculating the probability of a hazard, taking into
account the frequency with which workers are exposed to danger, which eliminates the need
to involve experts for an expert assessment at this stage.
AVALIAÇÃO DA FUNÇÃO SEXUAL DE MULHERES NA MENOPAUSA
Authors: Mariany  Rodrigues  da  Silva Jéssica , Pereira  Valeriano Dárida , Yassuyuki  Tacao Guilherme , Ribeiro Pereira Lara , Pereira Santos Leticia , Santos Arantes Mayane , Mayara Gutierres Magalhaes Raiza , Paula Félix da Silva Thaisa , Marques Vanderlei Franciele , Maria do Carmo Edna
Published: December 2020

The climacteric can present hormonal, physiological and metabolic variation, along with psychosocial changes, that have repercussions on life and sexual interest. The objective was to assess and classify the sexual function of women in menopause. It was recruited 84 women for the research, of which 57 come within inclusion criteria: experiencing menopause (cessation of menstrual cycles for at least 12months) and having had an active sexual life in the last six months. The Female Sexual Quotient (FSQ) domains were evaluated: desire and sexual interest,foreplay,arousing of the woman and sexual interaction with partner,comfort in sexual intercourse,orgasm and sexual satisfaction. The total score for FSQ determined the performance/sexual satisfaction pattern and, of the 57 women, the major proportionwas from regular to good (43.86%), while null to bad (7.01%) had lowest proportion. The total FSQ score, it was possible to verify that 71.93% of the participants presented an adequate score, having scored ≥62 points. It was concluded that the evaluated women presented adequate and satisfactory sexual function.
CARCINOMA UROTELIAL DA BEXIGA: RELATO DE CASO
Authors: Bandeira Santos Gabriel , Iankelevich Baracat Felipe , Rubini Ávila Oscar
Published: December 2020

Among male patients, bladder cancer is the fourth most common and is rarely identified in young individuals. The most common symptom is macroscopic hematuria and the initial treatment is transurethral resection of the bladder, in which the stage and classification are identified. Smoking is known to be the main risk factor for bladder cancers. Radical cystectomy and bilateral pelvic lymphadenectomy are the “gold standard” treatment for muscle-invasive bladder cancer. Around 25% of bladder neoplasms are muscle-invasive at diagnosis, but the patients have a good prognosis with this kind of treatment. The Bricker technique is the most used for the reconstruction of the neobladder. In this paper we report the case of a male patient, 55 years old, with invasive high-grade bladder cancer, treated with a radical cystectomy, lymphadenectomy and neobladder using the Bricker technique. After the surgical procedure, the patient remained in the Intensive Care Unit for two days, presenting acute kidney injury and the need for three hemodialysis sessions. The recovery was adequate, with a good postoperative evolution. We emphasize the importance of reporting to the patient about the indispensable clinical follow-up, which must be done until medical discharge, to avoid disease recurrence and the need for more aggressive treatments, as we will see in this case.
Beautiful Fractals as a Crystal Ball for Financial Markets? - Investment Decision Support System Based on Image Recognition Using Artificial Intelligence
Authors: Abdel-Karim Benjamin M.
Published: December 2020

The work by Mandelbrot develops a basic understanding of fractals and the artwork of Jackson Pollok to reveal the beauty fractal geometry. The pattern of recurring structures is also reflected in share prices. Mandelbrot himself speaks of the fractal heart of the financial markets. Previous research has shown the potential of image recognition. This paper presents the possibility of using the structure recognition capability of modern machine learning methods to make forecasts based on fractal course information. We generate training data from real and simulated data. These data are represented in images to train a special artificial neural network. Subsequently, real data are presented to the network for use in predicting. The results show that the forecast of time series based on stock price illustration, compared to a benchmark, delivers promising results. This paper makes two essential contributions to research. From a theoretical point of view, fractal geometry shows that it can serve as a means of legitimation for technical analysis. From a practical point of view, highly developed methods from the field of machine learning are able to recognize patterns in data through appropriate data transformation, and that models such as random walk have an informational content that can be used to train machine learning models.
Optimization, Validation and Standardization of ELISA
Authors: Minic Rajna , Zivkovic Irena
Published: December 2020

The enzyme-linked immunosorbent assay (ELISA) is a commonly used analytical immunochemistry assay based on the specific bond between the antigen and the antibody. The application of this test has significantly changed the practice of medical laboratories in which it is used for detection and quantification of molecules such as hormones, peptides, antibodies, and proteins. Various technical variants of this test can detect antigen (native or foreign) or antibody, determine the intensity of the immune response whether pathological or not; the type of induced immune response as well as the innate immunity potential; and much more. These capabilities, as well as the high sensitivity and robustness of the test and a small price, make it possible to quickly and reliably diagnose diseases in most laboratories. Besides, ELISA is a test that is also used in veterinary medicine, toxicology, allergology, food industry, etc. Despite the fact that it has existed for almost 50 years, different ELISA tests with different technical solutions are still being developed, which improves and expands the application of the this exceptional test. The aim of this chapter is to empower the rider to optimize, standardize and validate an enzyme linked immunosorbent assay.
Interpersonal Relationships in Early Childhood
Authors: Morales-Murillo Catalina , García-Grau Pau , Fernández-Valero Rosa
Published: December 2020

Child interactions with the environment (adults, peers, materials) constitute the engine for development and learning, especially in early stages of development. Emotionally secure, responsive, and contingent interactions with adults and peers promote emotional, cognitive, and social development. Interpersonal interactions facilitate the acquisition of social skills and emotion regulation strategies, which are learned through the observation of the behaviors of adults and peers and through the direct interactions with them. This chapter presents the theoretical foundations for considering interpersonal relations as engines of development, and synthetizes the latest results on the impact of interpersonal relationships on the development of children in natural environments (school, home, and the community).
Can Humans Find Security in Augmented and Virtual Realities?
Authors: Cohen Elliot D. ,   Philosophy Documentation Center
Published: December 2020

Logic-Based Therapy (LBT), a mode of philosophical counseling I invented beginning in the mid 1980s, under the auspices of Cognitive Behavior Therapy (CBT) founder Albert Ellis, takes metaphysical security (security about reality itself) as a sin qua non for human happiness. The goal of LBT is to help people overcome irrational thinking that leads to metaphysical insecurity and to help build constructive, philosophical thinking that promotes metaphysical security. However, the advent of augmented and digital reality are beginning to present new challenges to obtaining metaphysical security. Applying the tenets of LBT, this paper examines the implications for attaining metaphysical security in this brave new world of advancing technologies.
Annotated Translation of Udayana's Aatmatattvaviveka
Authors: Chakrabarti Kisor Kumar ,   Society for Indian Philosophy and Religion
Published: December 2020

The Buddhist argues that when two cognitive states are different, their objects are also different. For example, awareness of a pot is different from awareness of a cloth and their objects are different as well. Based on the pervasion that no two different cognitive states have the same object the Buddhist claims that the objects of inference and testimony on the one hand are different from the objects of (indeterminate) perception on the other. That is, what is perceived is never the same as what is inferred or learnt from testimony. This lends support to the Buddhist position that only unique particulars that are grasped in (indeterminate) perception are real; what are grasped in inference or testimony are not unique particulars and, accordingly, are not real. Udayana’s critique of the above position is explained and analyzed.
Eudaimonism, Egoism, and Responsibility for Oneself
Authors: Lott Micah ,   Philosophy Documentation Center
Published: December 2020

This paper considers the following claim: In order to live well, your first concern must be with yourself. I show how the truth in this claim can be captured by a eudaimonist framework. I distinguish two sorts of self-concern: (1) self-care and (2) self-responsibility. I examine each of these notions. I also consider different senses in which either sort of self-concern might be one’s first concern. I identify the place of each of these ideas in a properly developed eudaimonism. As part of my discussion, I respond to the egoism challenge to eudaimonism, and I outline a thoroughly non-egoistic form of eudaimonism.
Religious Perspectives on Environmental Issues
Authors: Sayem Md. Abu ,   The Center for Process Studies
Published: December 2020

This article is a transcription of a dialogue between Mohammad Abu Sayem and John Cobb that took place on June 24, 2019. The major topic covered in the dialogue is the relationship between Cobb's environmental thought and theology.
Progress and Civilization in Whitehead
Authors: Schulz Dwayne ,   The Center for Process Studies
Published: December 2020

This article is an attempt to analyze and criticize, both positively and negatively. Whitehead's concept of progress. Whitehead's progressive cosmology is critically examined, as is the relationship between technology and moral progress. The fragility of progress is emphasized.
Clear as Mud
Authors: Reyes Gisela ,   Philosophy Documentation Center
Published: December 2020

Colorism is an enduring system of discrimination that is responsible for many continuing problems in contemporary society. This social phenomenon which allocates social privilege or lack thereof to individuals based on skin color is often reduced to an extension of racism. The present paper argues that colorism is not always reducible to an extension of racism. I proceed as follows. First, I acknowledge the difficulty of distinguishing between colorism and racism due to their modes of discrimination and the operative concepts which inform them. Next, I explore the instances where colorism appears in the absence of racism. Finally, I underscore the importance of being responsibly critical of our interpretations of the social context through an example of how the social context in Mexico is misinterpreted and leads to a mistaken claim about the colorism appearing interpedently of racism. Our social contexts should shape any efforts to mitigate the effects of these systems of discrimination. Therefore, wrongly interpreting our social context would lead us to deploying inadequate practices which we aim at mitigating the effects of either colorism or racism.
Third-Order Epistemic Exclusion in Professional Philosophy
Authors: Thani Zahra , Anderson Derek ,   Romanian Academy - Iasi Branch
Published: December 2020

Third-order exclusion is a form of epistemic oppression in which the epistemic lifeway of a dominant group disrupts the epistemic agency of members of marginalized groups. In this paper we apply situated perspectives in order to argue that philosophy as a discipline imposes third-order exclusions on members of marginalized groups who are interested in participating in philosophy. We examine a number of specific aspects of the epistemic lifeway embodied by academic philosophy and show how this produces inaccessibility to the discipline. In addition to critiquing the discipline and its methods we also use this discussion to elaborate on third-order exclusion itself. We conclude by proposing an intersectional pedagogy as a step toward creating a more accessible discipline.
An assessment of user's awareness about Indian telecom industry and their assessment of affordability of telecom services in India
Authors: Pal Singh , Mishra Pankaj , Farooq Ayesha
Published: December 2020

India announced its first National Telecom Policy in 1994 and since then its telecommunications Industry has witnessed tremendous growth. At a teledensity of 89.92% (TRAI 2019), it is the second largest telecom market in the world. The policy maker, Department of Telecommunication (DoT) and the regulator, Telecom Regulatory Authority of India (TRAI) have taken several initiatives to ensure affordable services to telecom users. TRAI also drives initiatives to increase the level of awareness about telecom industry among users. To analyse impact of these initiatives by TRAI and DoT, this study presents an objective assessment of user's awareness and their assessment of affordability of telecom services. A structured questionnaire is used to collect data by surveying a sample of 408 telecom users. It was found that half of the respondents were aware of DoT; more than half were aware of the regulator TRAI and Indian governments vision for telecommunications and 85% of survey respondents found telecom services affordable. The level of affordability varied across gender, age group and education levels. Through regression analysis, the study found that awareness about telecom industry influences users' assessment of service affordability. Hence, TRAI and DoT should take actions to increase the level of awareness, which will improve users' perception of affordability and may lead to increased adoption of telecom services. In addition, it is suggested that affordability of female users can be addressed through customized tariff plan and schemes.
Accuracy of body mass index based on self-report data among law enforcement cadets
Authors: Johnson Quincy , Joyce Jillian , Kukić Filip , Lockie Robert , Kornhauser Charles , Orr Robin , Jay Dawes
Published: December 2020

BACKGROUND - Height and body mass are often self-reported by study participants. However, the accuracy of this data compared to measured values is limited in tactical trainee populations. This study's purpose was to compare the accuracy of self-reported height and body mass to measured values within a US law enforcement cadet population, and determine how these estimations affected BMI classifications. METHODS - Self-reported and measured body height and body mass for twenty-six (n = 26) male and female cadets (males - age: 31.32 ± 10.04 years; measured height: 178.07 ± 9.87 cm; measured body mass: 92.44 ± 19.37 kg; females - age: 25.67 ± 1.53 years; measured body height: 168.17 ± 4.01cm; measured body mass: 78.94 ± 11.30 kg) were analyzed. RESULTS - Significant differences between estimated and measured height (p < 0.001), body mass (p < 0.05), but not BMI (p = 0.281) were revealed. CONCLUSION - Self-reported body height and body mass were not accurately reported when compared to measured values. However, reported resulted in accurate BMI classifications.
Criminal irresponsibility of children: Unpunished crime and possible solutions
Authors: Živković Natalija
Published: December 2020

Children up to 14 years of age are criminally irresponsible, which in fact means that certain crimes go unpunished, while the injured party becomes morally, and depending on the specific case, sometimes materially undamaged. This situation is debatable from the aspect of justice, since due to the tendency of humanity towards children, the interests of the injured party are neglected, as well as the wider social community, so that every crime is "punished". This paper presents current legal solutions in the world regarding the criminal responsibility of children, and examines the reasons for the inability of children to be held criminally liable. The measures of social protection that are taken against children who were not 14 years old at the time of committing the crime and the criminal sanctions that are taken against minors are compared. The position of the injured party in the mentioned situations was also critically indicated. The possibility of criminal liability of parents for the actions of their child was examined. At the end of the paper, in the concluding remarks, suggestions were given to the legislator for solving the problem. Consideration should be given to lowering the limit of criminal responsibility for certain serious crimes, i.e. introducing a rebuttable presumption of non-responsibility / responsibility of children aged 12-14 and in a specific case determine if the child is mature.
Acute bacterial meningitis in the Zlatibor district
Authors: Pavić Slađana , Jovanović Milica , Božović Miloš , Pavić Aleksandra
Published: December 2020

Introduction: Acute bacterial meningitis is present worldwide, with a lethality rate up to 50%. The most common causes are Streptococcus pneumoniae and Neisseria meningitidis. The aim of the research is to analyze acute bacterial meningitis in the Zlatibor district. Material and methods: Patients treated at the General Hospital in Uzice were examined retrogradely. Demographic data, risk factors, hematological and biochemical data from blood and cerebrospinal fluid and the findings of computed tomography scan of the endocranium were analyzed. All patients underwent lumbar puncture. The etiological diagnosis was made by identifying the pathogens from cerebrospinal fluid or blood culture. The clinical course was monitored, and the prognosis was determined according to the Glasgow coma scale. Results: We examined 148 patients with acute bacterial meningitis (92 men, 56 women), mean age 55.8 +/-13.1. Half of the patients had comorbidities. In 42%, the possible focus of infection was sinusitis. Main symptoms were headache (100%), fever (97.2%), neck stiffness (95.9%). CSF analysis showed less than 100 polymorphonuclear leukocytes/mm3 in 65% of patients, and CSF protein elevation in 95.3%. 94.6% of patients had leukocytosis in the blood, and 86.5% had elevated C-reactive protein. The most commonly isolated bacterium was Streptococcus pneumoniae (40.5%). 74.3% of patients had a favorable disease outcome. One third of the patients showed epileptic seizures. In 16.2% of patients, the disease ended lethally. Risk factors for lethal outcome were the presence of comorbidities, Streptococcus pneumoniae as the pathogen, the occurrence of epileptic seizures, age over 50 years and male gender. Conclusion: The most common cause of acute bacterial meningitis in adult population of the Zlatibor district is Streptococcus pneumoniae, which is also the most common cause of adverse disease outcomes. Majority of patients are men over the age of 50 with comorbidities, which are also a risk group for an unfavorable disease outcome.
Role of foreign tourist arrivals (FTAs) from Bangladesh in Indian tourism development: A segment-wise analysis
Authors: Karim Rajaul
Published: December 2020

Bangladesh being a neighboring country of India plays a crucial role in bringing millions of tourists every year. Bangladesh is the largest tourist generating market for India in which the India-Bangladesh relation is a key factor for this foreign tourist arrivals(FTAs) and tourism development. The main objective of this paper is to find out the trend of Bangladeshi foreign tourist arrivals in India from 2018 to 2025 with respect to observed values of foreign tourist arrivals during previous years, analysis of segment-wise growth rate of Bangladeshi tourist arrivals according to purpose of travel and to make some policy prescriptions. The research is based on secondary data by applying descriptive statistics considering the published reports of the Indian Government from the Ministry of Tourism. The findings of the present research paper show that the trend and growth rate of FTAs are rising steadily as well as the importance of Bangladeshi tourist arrivals in developing certain tourism segments of India that are lacking behind and have some potential for further expansion. Proper attention to these segments is expected to make a positive contribution towards tourism development in particular and economic development in general of India.
A exploração romana do mármore no anticlinal de Estremoz: extracção, consumo e organização
Authors: André Carneiro
Published: December 2020

O presente texto enquadra-se numa linha de investigação que desde 2006 realiza trabalhos de recolha de informação documental e bibliográfica sobre o território do anticlinal de Estremoz/Vila Viçosa, procurando definir as evidências de exploração, de modo a construir uma cartografia dos locais primários de extracção e a localizar os sítios de laboração de âmbito secundário, e a rede de povoamento no interior e na envolvente do anticlinal, o que pressupõe a detecção de todo o tipo de evidências, sejam as relacionadas directamente com o âmbito de exploração, com os padrões de ocupação do território com outras finalidades (agro-pecuária, sobretudo), identificando os sítios com outras valências (conteúdos sacros, espaços funerários, outros recursos de exploração...) ou a infra-estrutura viária que permitia a conectividade com as realidades territoriais da província e do Império.
El "pagus marmorarius" de Almadén de la Plata: revisión de las evidencias arqueológicas y aproximación a los patrones de poblamiento romano en el distrito marmóreo
Authors: Ruth Taylor
Published: December 2020

A pesar del amplio reconocimiento del distrito marmóreo de Almadén de la Plata como un área de gran interés para el conocimiento de la explotación de los mármoles regionales de la Hispania romana, la contextualización arqueológica de las canteras antiguas es una cuestión que ha recibido poca atención hasta la fecha. En este trabajo se pretende reunir y presentar de forma ordenada los datos fundamentales para el conocimiento de los diferentes tipos de ocupación, actividad y movimiento humano en la zona en época romana, con evidencias que abarcan los siglos I a.C. a IV d.C. La inscripción que conserva sobre mármol el nombre de L. Lucano es una referencia obligada, junto a otros datos más propiamente arqueológicos de menor difusión pero claves para la reconstrucción de los patrones de poblamiento y movilidad en el territorio inmediato a las canteras de mármol. El análisis conjunto de las informaciones ahora disponibles permite una primera síntesis arqueológica sobre el contexto humano e infraestructural asociado con el área o lugar cuyo nombre ha sido transmitido por la epigrafía como pagus marmorarius.
El pedestal como símbolo: en torno a la imagen de los homenajes públicos surgidos de los talleres de "Tarraco"
Authors: Diana Gorostidi Pi
Published: December 2020

Entre la producción de los talleres epigráficos de Tarraco destaca la ingente serie de pedestales tripartitos exentos para las estatuas honoríficas de magistrados y sacerdotes provinciales. Se trata de un tipo de monumento tallado de manera uniforme y sistemática desde finales del siglo I hasta finales del II dC. El inicio de su producción coincidió con la reforma urbanística Flavia de la zona superior de la ciudad, que pasó a ser el área de representación del concilium Hispaniae citerioris (PHC). En ella se configuró también la imagen corporativa de la Tarraconense, una vez concedido el ius Latii, a través de la creación de una magnífica y uniforme galería con las estatuas de los flamines PHC a expensas del propio concilio. El texto inciso en sus pedestales perpetuaba la memoria de cada individuo y el honor de su flaminado, pero también mencionaban explícitamente su origo, que evocaba muchas comunidades repartidas por todo el territorio recientemente incorporadas de iure al estado romano. Muchas de ellas estaban muy alejadas de Tarraco y no necesariamente conocidas para la mayoría de la población, por lo que la exposición pública de los nombres de estas ciudades en los pedestales de conciudadanos ilustres contribuyó a aumentar el prestigio colectivo tan manifiestamente evocado en Tarraco en la mencionada galería de viri flaminales. Un elemento clave para la creación de esta imagen unificada fue el empleo del marmor local de gran calidad, la piedra de Santa Tecla, que pronto fue exportado e imitado para monumentos semejantes en otras ciudades de la Tarraconensis, lo que contribuyó a que este modelo de pedestal tripartito de Tarraco llegase a ser un símbolo de estatus para las élites locales, tal como demuestra su localización incluso en ciudades muy alejadas del inmediato entorno de la capital provincial, incluso en otros conventus.
La reutilización del mármol en la arquitectura tardorromana y visigótica en la península Ibérica
Authors: Javier Á. Domingo
Published: December 2020

El mármol fue visto en el mundo antiguo como un material capaz de dar prestigio a una construcción. Por eso su difusión, principalmente a partir de la época de Augusto, fue enorme, incluso en lugares muy alejados de las canteras de extracción. Esta percepción no varió en época tardorromana y visigótica, y mientras descendía su producción en las canteras se difundía cada vez con mayor fuerza el fenómeno del reaprovechamiento del mármol procedente de antiguas construcciones caídas en desuso. En el presente artículo se analizan las modalidades de reutilización del mármol en la Hispania tardorromana y visigoda, así como el fenómeno de la imitación de modelos decorativos clásicos. Al mismo tiempo se señalan algunos elementos que nos permiten comprender mejor la gestión de esta práctica, como las modalidades de difusión de los spolia, la existencia de almacenes públicos, la cesión a privados de determinados edificios para recuperar los materiales constructivos, etc.
El uso, la saca y el transporte de las calizas de Espeja de San Marcelino-Espejón (Soria, España) en época moderna. Una aproximación arqueológica
Authors: Yolanda Peña Cervantes
Published: December 2020

Presentamos una aproximación arqueológica al uso, extracción y transporte de las calizas de Espeja de San Marcelino y Espejón (Soria) durante época moderna, prestando especial atención a la utilización de estas calizas por parte de la nobleza castellana y la monarquía y a las variedades escogidas por unos y otros durante época de los Austrias y los Borbones.
Kemampuan reproduksi dan riwayat hidup kutukebul Bemisia tabaci (Gennadius) dengan dan tanpa kopulasi pada tanaman cabai merah dan tomat
Authors: Hidayat Purnama , Ludji Rika , Maryana Nina
Published: December 2020

Kutukebul Bemisia tabaci (Gennadius) merupakan hama kosmopolitan pada berbagai jenis tanaman pertanian. Kutukebul dapat menyebabkan kerusakan tanaman dengan cara mengisap bagian tanaman menggunakan stilet dan sebagai vektor virus tanaman. Tanaman cabai merah (Capsicum annuum) dan tomat (Solanum lycopersicum) merupakan tanaman hortikultura penting yang sering diserang oleh B. tabaci. Kutukebul diketahui dapat bereproduksi dengan kopulasi yang menghasilkan keturunan jantan dan betina serta tanpa kopulasi yang menghasilkan keturunan jantan. Tujuan penelitian ini untuk mengetahui kemampuan reproduksi kutukebul B. tabaci yang berkopulasi dan tidak kopulasi pada tanaman cabai merah dan tomat. Imago B. tabaci diambil dari tempat pemeliharaan di rumah kaca Cikabayan, IPB Dramaga. Satu imago betina yang baru keluar dari pupa atau nimfa instar akhir diinfestasikan pada tanaman cabai merah dan tomat yang ditanam dalam polibag untuk mengetahui keturunan B. tabaci yang dihasilkan tanpa kopulasi. Pengujian untuk mengamati reproduksi B. tabaci yang berkopulasi sama dengan perlakuan tanpa kopulasi, hanya saja pada tanaman cabai merah dan tomat diinfestasikan satu pasang imago (jantan dan betina). Masing-masing perlakuan diulang 5 kali. Pengamatan dilakukan setiap hari terhadap jumlah telur yang dihasilkan oleh satu imago betina setiap harinya, masa inkubasi telur, lamanya periode nimfa untuk tiap-tiap instar, pupa, dan imago. Penelitian ini menunjukkan bahwa keperidian B. tabaci yang bereproduksi dengan kopulasi dan tidak kopulasi pada tanaman tomat lebih tinggi dibandingkan pada tanaman cabai, namun tidak ada perbedaan siklus hidup dan nisbah kelaminnya.
El deber procreativo de Jonas y el problema de la no-identidad
Authors: Loewe Daniel
Published: December 2020

En su ética de la responsabilidad argumenta Jonas a favor de un imperativo categórico, pero heterónomo: que la humanidad sea. Según este, habría un deber procreativo de la humanidad. Este deber ya incluiría las condiciones de una vida genuinamente humana. En primer lugar, el artículo sostiene que este imperativo no es capaz de lidiar satisfactoriamente con el desafío impuesto por el problema de la no-identidad, popularizado de Parfit. Si la elección entre dos políticas hoy, implica la no existencia de generaciones en el futuro, o una existencia en malas condiciones o incluso en condiciones de un infierno terrenal, el imperativo de Jonas debiese llevar a escoger la segunda política. Esto es contraintuitivo. En segundo lugar, el artículo sostiene que la integración de los intereses de las generaciones futuras en la ética sí se puede realizar desde una interpretación kantiana. Y finalmente el artículo sostiene que el cumplimiento del deber de que la humanidad sea, puede llevar a violar la autonomía de las personas en el presente en pos de la generación de valor en el futuro.
Mechanism of parameter-adjusted stochastic resonance based on Kramers rate
Authors: Leng Yong-Gang  ,   天津大学机械工程学院，天津  300072
Published: December 2020

Kramers rate restricts the stochastic resonance （SR） frequency within the scope of half of its limit value. This restriction is the cause of SR failure of high frequency signal. By revealing the mechanism of frequency transformation of the twice sampling SR, we prove that the frequency scale ratio of the twice sampling SR can map or transform any signal frequency to the SR frequency scale. Compared with the method of twice sampling SR, the approach of adjusting system parameters to realize SR can only be used within the small SR frequency range, since in tuning bistable system parameters it is hard to make half the Kramers rate equal to the high frequency of the real signal.
Geometry and electronic properties of Bn(n=2—15) clusters
Authors: Liu Li-Ren  , Lei Xue-Ling  , Chen Hang  , Zhu Heng-Jiang  ,   新疆师范大学数理信息学院，乌鲁木齐  830054
Published: December 2020

The geometry and electronic properties of Bn （n=2—15） clusters with different growth pattern were calculated and analyzed by using the density functional theory at B3LYP level. The energy gap, first ionization potential and binding energy per atom of boron clusters were also discussed. The results show that linear structures are unstable and are strongly metallic, especially for n=8, which has an energy gap as low as 0.061 eV, indicating the metallic characteristic. Planar and quasi-planar structures are most stable and weak in metallicity. The stability and metallicity of tree-dimensional structures are intermediate between those of the linear and the planar or quasi-planar structures. Furthermore, we also analyzed the electronic properties of ground-state clusters, including the binding energy per atom, second difference in energy, energy gap and the first ionization potential. The results show that B12 and B14 are magic-number clusters.
The spacetime singularity resolution of Schwarichild-de Sitter black hole in loop quantum gravity
Authors: Liu Cheng-Zhou  , Yu Guo-Xiang  , Xie Zhi-Kun  ,   (1)绍兴文理学院物理与电子信息系，绍兴 312000；滨州学院理论物理研究所，滨州 256600; (2)绍兴文理学院物理与电子信息系，绍兴 312000
Published: December 2020

By using the analog variable of the holonomy variable of loop quantum gravity and the corresponding quantization method, the gravity field near the center of the Schwarichild-de Sitter black hole is processed though quantization. The spectrums of 1/r and the curvature invariant are computed near the black hole center and the result that the both spectrums is bounded from above are obtained. Following the above quantization method and by computing the quantum Hamiltonian constraint equation of the gravity field near the classical singularity r=0, the evolution formula of the black hole wave function is obtained and the result that the wave function can evolve though the classical singularity is obtained.
Stochastic resonance in an overdamped harmonic oscillator
Authors: Zhang Li  , Liu Li  , Cao Li  ,   (1)华中科技大学物理学院,武汉 430074; (2)中南民族大学电子信息工程学院,武汉 430074
Published: December 2020

The stochastic resonance in an overdamped harmonic oscillator driven by cross-correlation Gaussian white noises in which one of the noises is modulated by a periodic signal is studied. By means of the Fourier transform of the stationary correlation function, an exact expression of the signal-to-noise ratio for the overdamped harmonic oscillator stochastic model is derived. Results reveal that there are two types of stochastic resonance in an overdamped harmonic oscillator stochastic model. One type of stochastic resonance is that a resonance peak exists in the curves of signal-to-noise ratio versus the multiplicative noise intensity Q. Another type of stochastic resonance is that a resonance peak exists in the curves of signal-to-noise ratio versus the oscillator frequency ω. By changing the value of signal frequency Ω, the signal-to-noise ratio versus Q curve can exhibit three different forms: the form with a signal peak, the form with a peak following a valley, and the monotonic form.
Optimization of self-adaptive synchronization and parameters estimation in chaotic Hindmarsh-Rose neuron model
Authors: Ma Jun  , Su Wen-Tao  , Gao Jia-Zhen  ,   兰州理工大学物理系,兰州 730050
Published: December 2020

Optimization of self-adaptive synchronization is investigated to estimate a group of five unknown parameters in one certain chaotic neuron model, which is described by the Hindmarsh-Rose. Two controllable gain coefficients are introduced into the Lyapunov function, which is necessary to get the form of parameter observers and controllers for parameter estimation and synchronization, to adjust the transient period for complete synchronization and parameter identification. It is found that the identified results for the minimal parameter （three orders of magnitude less than the maximal parameter） oscillate with time （the estimated results for this parameter is not exact） while the four remaining parameters are estimated very well when one controller and five parameter observers are used to work on the driven system （response system）. To the best of our knowledge, it could result from the great difference of five target parameters （values）. As a result, this problem could be solved when two controllers and five parameter observers are used to change the driven system and all the unknown parameters are identified with high precision. Furthermore, longer transient period for parameter estimation and complete synchronization is required when too strong gain coefficients are used, whils parameters can not be estimated exactly if too weak gain coefficients are used. Therefore, appropriate gain coefficients are critical to achieve the shortest transient period for parameter identification and complete synchronization of chaotic systems, and the optimization of gain coefficients depends on the model being studied. Furthermore, it is confirmed by our numerical results that this scheme is effective and reliable to estimate the parameters even if some parameters jump suddenly.
Generation and interference of vortex beams
Authors: Li Yang-Yue  , Chen Zi-Yang  , Liu Hui  , Pu Ji-Xiong  ,   华侨大学信息科学与工程学院物理电子系,泉州 362021
Published: December 2020

The generation and interference of vortex beam have been investigated both theoretically and experimentally in this paper. The interference pattern of fractional and integral vortex beams with vortex beams with spherical wave and plane wave have been studied numerically, and the corresponding experimental results are presented. The experimental results and numerical results are practically consistent. It is found that the interference pattern varies with the topological charge of vortex beams. This phenomenon can be used to detect the topological charge of fractional vortex beam.
Studies on the mechanisms of enhancing the performances of thyristors by Ga-Al doping
Authors: Wang Gong-Tang  , Liu Xiu-Xi  ,   山东师范大学物理与电子科学学院，济南 250014
Published: December 2020

In accordance with the character of diffusing Ga and Al in SiO2/Si system and in the use of magnetic-control device for controlling accurately the doping quantity of Ga, the double-impurity doping of both Ga and Al is completed consecutively in the same high-temperature diffusion furnace. It is shown that the doping is with good uniformity，repeatability and continuity．A uniform distribution of impurity concentration can be achieved．Since the covalent radiuses of the atoms，Ga and Al，are close to that of Si，and the temperature is slowly dropped after the high temperature, the defects of the lattice is obviously reduced．The lifetime of minority carrier is significantly increases and the voltage drop is reduced．In this paper, the mechanism of enhancing the performances of thyristors by Ga-A1 doping is investigated．Our result shows that the double-impurity doping technique is conducive to raising the level of breakdown voltage and surge capacity，and improving the characteristics of current，triggering and dynamics significantly．The double-impurity doping technique is better than other known techniques of doping．
Chaos modeling and real-time online prediction of permanent magnet synchronous motor based on multiple kernel least squares support vector machine
Authors: Chen Qiang  , Ren Xue-Mei  ,   北京理工大学自动化学院,北京 100081
Published: December 2020

A multiple kernel least squares support vector machine (MK-LSSVM) modeling method is proposed for the chaos of permanent magnet synchronous motor (PMSM). An equivalent kernel is built by linear-weighted combination of multi kernels to reduce the dependence of modeling accuracy on kernel function and parameters. The solutions of regression parameters and MK-LSSVM output are given in theory. C-C method is employed for the phase space reconstruction of PMSM chaos, then one-step and multi-step real-time online prediction of reconstructed chaotic series are investigated based on moving window learning method. The effect of different measurement noises on the proposed method is discussed. Simulations show that the proposed method can enhance the modeling accuracy and have strong anti-noise capability.