bluuebunny/crossref_metadata_2025 huggingface dataset:
The Embodiment of Law: Altered Carbon and Six Wakes
Authors: Humann Heather Duerre
Published: July 2021

Mur Lafferty’s novel Six Wakes (2017) and the Netflix television series Altered Carbon (2018–present), created by Laeta Kalogridis and based on a novel written by Richard K. Morgan, both portray futuristic societies wherein death as we conceive of it has been rendered nearly obsolete because of technological advancements. In the case of Altered Carbon, the series imagines a twenty-fourth century dystopian society which relies on alien technology to transfer individuals’ consciousness into new bodies (referred to in the series as “sleeves”). In Six Wakes, a novel set in the twenty-fifth century, cloning and “mind-mapping” work together to bring about a similar process. Through these processes, both Six Wakes and Altered Carbon call specific attention to the unstable boundaries between human and posthuman. While in Six Wakes and Altered Carbon alike, beings have not achieved true immortality, they have gained something akin to it. Death remains a possibility for these post-human beings, but they have the potential to download their consciousness into other bodies on a (theoretically) limitless basis. These science fiction narratives thus raise new questions related to embodiment and post-humanism. Indeed, throughout Six Wakes, Lafferty devotes a significant amount of care to mapping out the legal considerations and consequences that human cloning invariably bring about. This facet of her novel works to raise questions about the ethics of cloning as well as about the legal and ontological status of clones. In Altered Carbon, a new legal frontier is likewise explored since the ultra-rich try on and discard bodies (“sleeves”) in a manner which prompts a re-definition of the concept of personhood while they simultaneously manipulate law enforcement and the legal system to suit their whims. Alongside the legal questions they raise, the science fiction scenarios depicted in these narratives serve as cases-in-point to demonstrate a post-human view of embodiment.
Studies on the Old Babylonian Kings of Isin and Their Dynasties with an Updated List of Isin Year Names
Authors: de Boer Rients
Published: July 2021

Five micro-studies on Isin’s Old Babylonian kings and Isin history are presented together with an updated list of Isin year names.
Presbyters Serving as Pastors in Roman Africa
Authors: Burns James Patout
Published: July 2021

Presbyters served as individual pastors for rural congregations or at a regional church in the city of Carthage or another city, such as Sufetula, that had multiple churches and congregations. Twenty such presbyters can be identified by name or location. A presbyter or group of presbyters also might serve as a substitute for a bishop who was travelling, disabled, or between the death of one bishop and consecration of a successor. One such presbyter (Heraclius of Hippo) can be identified as long-term administrator for Augustine. Augustine’s correspondence and the legislation of the African bishops—usually on disciplinary issues—provides most of the information about presbyters serving as pastors. The legislation of the African church restricted the authority of these presbyters to baptize and to perform other actions that changed the status of a member of the congregation: admit penitents to communion apart from emergencies, to consecrate virgins. Although the legislation referred to the presbyter as praepositus, the person placed in charge, presbyteral pastors acted under the supervision of the bishop.
“Neither Poverty nor Riches”: Ambrosiaster and the Problem of Clerical Compensation
Authors: Hunter David G.
Published: July 2021

In several places the anonymous Roman presbyter, now known as “Ambrosiaster,” expressed concern over the compensation given to presbyters. This article examines his comments in the context of several fourth-century developments: first, restrictions imposed on the members of the curial class in respect to holding clerical office, a phenomenon attested both in imperial legislation and in patristic sources; second, the spread of ascetical ideals of clerical life, fostered especially by writers such as Ambrose and Jerome. While Ambrosiaster shared the view that a member of the clergy (ecclesiasticus) should abstain from “worldly business activities” (negotia saecularia), in contrast to his more ascetic contemporaries, he stressed the importance of adequate payment for the clergy and encouraged wealthy Christians to provide it.
Behavioral Responses to Neural Circuit Control: Pitfalls and Possible Solutions
Authors: Solis Oscar
Published: July 2021

Highlighted Research Paper:Lewis AS, Calipari ES, Siciliano CA (2021) Toward Standardized Guidelines for Investigating Neural Circuit Control of Behavior in Animal Research.
Noise-Making, Occupy Wall Street, and the Politics of Amplification
Authors: Vilanova John
Published: July 2021

This research explores a set of sound technologies deployed during the 2011 Occupy Wall Street protests in New York City’s Zuccotti Park. It examines the People’s Microphone, the Long Range Acoustic Device (LRAD) sound cannon, the drum circle, and the noise complaint. Deepening understandings of their places within the contemporary urban soundscape and their use during the protests, it uses historical research, textual analysis, and qualitative discourse analysis methods to explore the technologies within a larger framework of the city’s discourses around (in)appropriate sound and action.

Its findings suggest that each individual technology was evidence for the nature of its user in a way that presaged how the conflict would play out. The microphone epitomized the ideology (and fragility) of the hyper-democratic Occupiers’ ethos. The LRAD suggested the state’s superlative sonic capability and its “monopoly on the legitimate use of noise.” And the drum circles and noise complaints that followed ultimately showed the ways “noise-making” is better understood as a discursive construction that delegitimizes sound. Together, they suggest the ways the hegemonic soundscape serves the status quo. The essay also elaborates a taxonomy of sonic terms, specifically exploring volume, amplification, and noise-making as terms that explain the dynamics of sound during protest. It offers scholars of media activism a toolkit for sound studies that gets at the dynamics and structures of sonic power and explores the way sound-making is a key battleground of modernity. Sound conventions are a way that contemporary society is codified, legislated, and contested.
DISTRIBUTED DEEP LEARNING FRAMEWORK FOR SMART BUILDING TRANSDUCER NETWORK
Authors: Lobachev Ivan M. , Antoshchuk Svitlana G. , Hodovychenko Mykola A.
Published: July 2021

This work is devoted to the development of a distributed framework based on deep learning for processing data from various sensors that are generated by transducer networks that are used in the field of smart buildings. The proposed framework allows you toprocess data that comes from sensors of various types to solve classification and regression problems. The framework architecture consists of several subnets: particularconvolutional netthat handle input from the same type of sensors, a single convolutional fusion netthat processes multiple outputs of particularconvolutional nets. Further, the result of a single convolutional fusion netis fed to the input of a recurrent net, which allows extracting meaningful features from time sequences. The result of the recurrent netopera-tion is fed to the output layer, which generates the framework output based on the type of problem being solved. For the experimental evaluation of the developed framework, two tasks were taken: the task of recognizing human actions and the task of identifying a person by movement. The dataset contained data from two sensors (accelerometer and gyroscope), which were collected from 9 users who performed 6 actions. A mobile device was used as the hardware platforms, as well as the Edison Compute Module hardware device. To compare the results of the work, variations of the proposed framework with different architectures were used, as well as third-party approaches based on various methods of machine learning, including support machines of vectors, a random forest, lim-ited Boltzmann machines, and so on. As a result, the proposed framework, on average, surpassed other algorithms by about 8% in three metrics in the task of recognizing human actions and turned out to be about 13% more efficient in the task of identifying a per-son by movement. We also measured the power consumption and operating time of the proposed framework and its analogues. It was found that the proposed framework consumes a moderate amount of energy, and the operating time can be estimated as acceptable.
DISCRETE APPROXIMATION OF CONTINUOUS OBJECTS WITH MATLAB
Authors: Tolochko Olga I. , Palis Stefan , Burmelov Oleksii O. , Kaluhin Danylo V.
Published: July 2021

This work is dedicated to the study of various discrete approximation methods for continuous links, which is theobligatory step in the digital control systems synthesis for continuous dynamic objects and the guidelines development for performing these opera-tions using the MATLAB programming system. The paper investigates such sampling methods as pulse-, step-, and linearly invariant Z-transformations, substitution methods based on the usage of numerical integration various methods and the zero-pole correspond-ence method. The paper presents examples of using numerical and symbolic instruments of the MATLABto perform these opera-tions, offers an m-function improved version for continuous systems discretization by the zero-pole correspondence method, which allows this method to approach as step-invariant as linearly invariant Z-transformations; programs for continuous objects discrete approximation in symbolic form have been developed, which allows to perform comparative analysis of sampling methods and sys-tems synthesized with their help and to study quantization period influence on sampling accuracy by analytical methods. A compari-son of discrete transfer functions obtained by different methods and the corresponding reactions in time to different signalsis per-formed. Usingof the developed programs it is determined that the pulse-invariant Z-transformationcan be usedonly when the input of a continuous object receives pulse signals, and the linear-invariant transformation should be used for intermittentsignals at the input. The paper also presents an algorithm for applying the Tustin method, which corresponds to the replacement of analogueinte-gration by numerical integrationusingtrapezoidal method. It is shown that the Tustin method is the most suitable for sampling of first-order regulators with output signal limitation. The article also considers the zero-pole correspondence method and shows that it has the highest accuracy among the roughmethods of discrete approximation.Based on the performed research, recommendations for the use of these methods in the synthesis of control systems for continuous dynamic objects are given.
The influence of age on disease outcome in 2015 ATA high-risk differentiated thyroid cancer patients
Authors: van Velsen Evert F S , Peeters Robin P , Stegenga Merel T , van Kemenade Folkert J , van Ginhoven Tessa M , Verburg Frederik A , Visser W Edward
Published: July 2021

Objective

Recent research suggests that the addition of age improves the 2015 American Thyroid Association (ATA) Risk Stratification System for differentiated thyroid cancer (DTC). The aim of our study was to investigate the influence of age on disease outcome in ATA-high risk patients with a focus on differences between patients with papillary (PTC) and follicular thyroid cancer (FTC).

Methods

We retrospectively studied adult patients with high-risk DTC from a Dutch University hospital. Logistic regression and Cox proportional hazards models were used to estimate the effects of age (at diagnosis) and several age cutoffs (per 5 years increment between 20 and 80 years) on (i) response to therapy, (ii) developing no evidence of disease (NED), (iii) recurrence, and (iv) disease-specific mortality (DSM).

Results

We included 236 ATA high-risk patients (32% FTC) with a median follow-up of 6 years. Age, either continuously or dichotomously, had a significant influence on having an excellent response after initial therapy, developing NED, recurrence, and DSM for PTC and FTC. For FTC, an age cutoff of 65 or 70 years showed the best statistical model performance, while this was 50 or 60 years for PTC.

Conclusions

In a population of patients with high-risk DTC, older age has a significant negative influence on disease outcomes. Slightly different optimal age cutoffs were identified for the different outcomes, and these cutoffs differed between PTC and FTC. Therefore, the ATA Risk Stratification System may further improve should age be incorporated as an additional risk factor.
Proyecto Utica (Túnez). Excavaciones en la ciudad fenicio-púnica. Resultados de la campaña de 2016
Authors: López Castro José Luis , Abidi Faouzzi , Mora Serrano Bartolomé , Sánchez Moreno Amparo , Ben Jerbania Imed , Jendoubi Kaouther , Niveau de Villedary y Mariñas Ana María , Torchani Mounir , Mederos Martín Alfredo , Khalfalli Walid , Ruiz Cabrero Luis Alberto
Published: July 2021

Se presentan los resultados de la campaña de excavaciones de 2016 en Utica (Túnez). En la Zona II se continuó excavando en el corte 21 buscando la delimitación del muro perimetral de un edificio fenicio arcaico. Se continuó la excavación al norte de dicho corte de una fosa romana. En la zona I se continuó la excavación en los sectores 21 y 22 del corte 10. El primero dio como resultado un pavimento perteneciente a una vivienda quizá del siglo III-II a.C. En el segundo sector, situado al extremo noreste del corte, se localizó una posible calle que delimitaría la manzana urbana fenicio-púnica. En el corte 11 se efectuó una ampliación al norte que descubrió una plataforma de cimentación hecha con grandes bloques, posiblemente para sostener el muro perimetral Noreste del templo del siglo IV a.C. Por último, se efectuó una prospección geofísica en las zonas I y II para comprobar los límites de la ciudad y la existencia de estructuras antiguas en las inmediaciones de la antigua línea de costa.
Compression characteristics and the influencing factors of sweet sorghum straw: Experimental study
Authors: Du Xiaoxue , Mao Hanping , Wang Chunguang
Published: July 2021

The rheological properties of the compression process of sweet sorghum straw were studied. The selected experimental factors comprised of the compression density, cutting length, compression speed, and moisture content, and specific energy consumption were selected as the evaluation index of the compression characteristics. The Box-Behnken test scheme was used to analyze the response surface test. The results showed that the selected compression model and specific energy consumption model of the sweet sorghum straw compression process were obtained. The primary factors contributing to energy consumption were the cutting length, moisture content, and compression density. The optimal parameters were as follows: a compression density of 500 kg/m3, a cutting length of 20 mm to 30 mm, a moisture content of 60.06%, and a specific energy consumption of 66 kJ/kg. The results provided methods for reducing the total energy consumption of the compression process and a theoretical basis for the compression and bundling of sweet sorghum.
Estrategias de nominación y estructura de los nombres de plantas en la lengua urarina
Authors: Silva Villegas Gema
Published: July 2021

El presente artículo constituye un primer estudio a detalle de la nomenclatura botánica en urarina, una lengua amazónica aislada hablada en Loreto, Perú. Se describen las principales estrategias lingüísticas que emplea la lengua en la nominación de plantas, así como la estructura de los nombres y sus motivaciones semánticas, a partir del análisis de una base de datos léxica de 166 entradas con nombres de plantas recogidos en trabajo de campo. Como resultado, se encontró una fuerte correlación entre las estrategias de acuñación y préstamo con formas léxicas simples, y las estrategias de composición y nominalización con formas léxicas complejas. Por otro lado, se identificaron cuatro patrones estructurales implicados en la composición, que evidencian procesos metafóricos y metonímicos, así como tres patrones estructurales en la nominalización, que resultan de particular interés para las discusiones tipológicas en torno al lexema y la frase.
Abolición vs continuidad del tráfico de esclavos. Una aproximación al tema desde las costas de África
Authors: Gómez Calderín Sissy Indira , Fernández Carcassés Manuel
Published: July 2021

Este trabajo demuestra que, a pesar de los esfuerzos de Inglaterra para eliminar la trata de esclavos, los intereses de las élites esclavistas de América promovieron las vías para que, de manera clandestina, continuaran entrando determinadas cantidades de esclavos, en especial a Estados Unidos, Brasil y Cuba. En los territorios africanos también funcionaron mecanismos para burlar las prohibiciones, toda vez que la economía de los enclaves coloniales allí existentes, en especial en el Reino del Kongo y Angola, era aún dependiente del comercio de personas, y resultaba difícil reorientarla rápidamente hacia otras actividades. Lo mismo puede decirse de las poblaciones africanas de esas regiones, igualmente especializadas en esta inhumana actividad, de la cual dependían. Estos factores conspiraron contra una rápida extinción de la trata y se estudian en este artículo a través de una colección de documentos publicada en Angola. Se aplicaron métodos de análisis bibliográfico y documental.
La "Accesibilidad-DHD" en el caso “Memoria y Experiencia Cossettini": hacia una co-construcción multimodal para un equitativo acceso a contenidos web
Authors: Cenacchi Marisa Andrea , San Martín Patricia Silvana , Manero Lucía
Published: July 2021

El artículo presenta un estudio de caso cuya objetivo es mejorar las condiciones de accesibilidad web de un dispositivo de comunicación pública de ciencia y tecnología titulado “Dispositivo Hipermedial Dinámico Memoria y experiencia Cossettini”. El mismo, publica en Acceso Abierto documentos digitalizados del “Archivo pedagógico Cossettini” conteniendo una gran cantidad de elementos estéticos visuales.  Desde el marco teórico se sostiene que la elaboración colaborativa de objetos digitales multimodales contextualizados podría posibilitar a quienes participan del DHD MyECossettini una experiencia sensible/accesible de exploración, interpretación y recreación no excluyente de los archivos patrimoniales digitalizados, sin desmedro de lo singular y significativo de la fuente original. En este sentido, se ha propuesto la “Accesibilidad-DHD” basada en los principios de Percepción, Comprensión, Acción y Flexibilidad. En lo metodológico, se abordó el análisis y desarrollo de objetos digitales accesibles con un enfoque  socio-técnico e interdisciplinar en atención al principio de percepción. Los resultados alcanzados constatan que las alternativas accesibles elaboradas habilitan nuevos canales perceptivos y proporcionan información contextual que constituye un valor agregado para todas las personas. Finalmente, se concluye que participar de la “Accesibilidad-DHD” no requiere necesariamente de experticia en informática, habilitando a que cada persona, desde su lugar, colabore en garantizar el acceso equitativo a la información. No obstante se advierte que, el desafío más complejo se presenta en la construcción de una toma de conciencia colectiva activa que asuma con responsabilidad de garantizar el Derecho Humano a habitar sin exclusiones el ciberespacio.
Necesidades y comportamiento informativo de mujeres que pertenecen a los grupos de familia Al-anon, Chiapas, México
Authors: Ruiz Gómez Janett , Mireles Cárdenaa Celia
Published: July 2021

Este artículo aborda las necesidades y el comportamiento informativo de una comunidad no estudiada, se trata de los Grupos de Familia Al-anon, en donde asiste la familia de las personas que presentan problemas con el consumo de alcohol. Este estudio es exploratorio con un enfoque mixto, la muestra es no probabilística y participaron seis mujeres. Se empleó el instrumento de la entrevista y la encuesta. Se encontró que las principales necesidades informativas son el duelo (66 %) y la felicidad (50 %); y los temas: entretenimiento, superación personal, aceptación, tolerancia y primer paso; todas las anteriores con un porcentaje de 33 %. Los comportamientos informativos de estas mujeres son: el libro (83 %), el internet (66 %) y la televisión (50 %).
Consumo de carne y productos cárnicos entre estudiantes de la Universidad de Costa Rica
Authors: Chacón Villalobos Alejandro
Published: July 2021

Objetivo: establecer patrones de consumo de carne y productos cárnicos en estudiantes de la Universidad de Costa Rica. Metodología: se realizó un estudio básico del perfil del consumidor universitario mediante una encuesta a 499 estudiantes (268 mujeres y 231 hombres, entre 16 y 29 años) y se consideraron edad, sexo biológico, hábitos de consumo, tipo de carne y producto cárnico más utilizados, razones y lugares de compra. Como pruebas estadísticas se emplearon evaluaciones chi cuadrado, ANDEVAS factoriales y análisis estadístico descriptivo. Resultados: la carne de pollo es la más ingerida (96,5 %), seguida por la de res (91,9 %). El consumo de estos alimentos es un hábito diario para el 23,2 % de los estudiantes, mientras que, un 17,6 % los come al menos tres veces por semana. El sabor (87,6 % de los casos) es la principal razón de consumo por encima del valor nutricional (51,9 %). Una mayoría no participa de la compra de cárnicos (52,7 %) y quienes lo hacen, prefieren los supermercados (45 %). La calidad percibida es el principal criterio de selección del producto, así como la confianza en el lugar de venta. Un 87,0 % consume embutidos con una frecuencia usual de una a dos veces por semana (49,8 %). El jamón restructurado (89,0 %) y la salchicha (83,0 %) fueron los más usados, el 49,5% de los casos no manifestó predilección por una marca comercial. Conclusión: un 96,4 % de los estudiantes opta regularmente por carnes y productos derivados; el resto son personas principalmente veganas. Ninguna relación de estas prácticas con la edad y sexo pudo establecerse.
Potential accessibility models and planning policy design in Romania: Are the fixed model’s parameters leading to wrong interpretations?
Authors: Rusu Alexandru , Groza Octavian , Radu Necșuliu
Published: July 2021

This paper explores the differences between two different types of potential accessibility models applied to the urban system of Romania, using demographic data from 2015. The first model is based on a classical formalization of the potential accessibility function, while the second one focuses on the introduction of variable parameters in the model’s equation. When mapping the results, one will found that the models we investigated respond to different needs and visions in spatial planning. The alternative formalization provides a frame for a more in-depth analysis of the transportation endowment, at regional scale, together with an assessment of the urban systems hierarchy. The study highlights the fragility of the local urban systems gravitating around small cities, placed in precarious accessibility situations. The results can be used for a better assessment of the policy priorities, both from the perspective of spatial planning and sustainable development.
Controversial impact of experimental soil inoculant containing Beauveria bassiana and Metarhizium anisopliae on Sitophilus granarius
Authors: Keszthelyi Sándor , Grünvald Petra , Pál-Fám Ferenc
Published: July 2021

The insecticidal efficacy of the experimental bioinoculants (Natur Nova, Natur Agro Hungary Ltd., Hungary) containingBeauveria bassiana(Bals.-Criv). Vuill. andMetarhizium anisopliaeMetschnikoff against stored product pests modelled by granary weevil,Sitophilus granariusL. was evaluated on wheat in laboratory tests. In order to comparability, two applications were also set up: one purely ash-treated grain treatment against wireworms and a soil-injected one. Our results confirmed that some biopesticides can exert unexpected effect on non-target arthropods. However, the examined biopesticides were as empirically effected against the target arthropods regarding wireworms. Nevertheless, the application exempt from ash of the examined bioinoculants Natur Nova containingB. bassianaandM. anisopliaewere not suitable for the elimination of the stored product pests modelled byS. granarius. In contrast, the putative plant protection effect of these biopesticides was observed in the course of applying the agents in the recommended environment and pest species as well as when applying them with ash carrier.
The animal names in the Book of Leviticus of the Gözleve Bible (1841). Part II: Bird species
Authors: Işik Murat
Published: July 2021

This paper is a continuation of a previous study that presented the names of mammal, insect, and reptile species appearing in the Book of Leviticus of the so-called Gözleve Bible. The present study aims to survey the rest of the animal names in the corpus, representing bird species. The translation shows a mixed vocabulary and therefore the distribution of the Kipchak, Oghuzic, and non-Turkic elements will be compared with their equivalents in some of the other books of the Gözleve Bible, a recently published critical edition of another Crimean Karaim Bible, and some Ottoman Turkish Bible translations.
Peculiarities of vascular endothelial growth factor of oral cavity in atopic condition VEGF of oral cavity in atopic condition
Authors: Rozana Nazaryan , Liudmyla Kryvenko , Vitaliy Gargin
Published: July 2021

Background and aims

Vascular endothelial growth factor (VEGF) is regarded as a potent stimulating factor for angiogenesis and vascular permeability and probably is connected with an inflammatory reaction. Our study aimed to determine the effect of VEGF in the inflammatory process in the oral mucosa of experimental animals in the modulation of atopic disease.

Materials and methods

Atopic condition was simulated by the ovalbumin model. Obtained specimens of oral mucosa were examined histologically; immunohistochemistry was performed with detection VEGF, CD23, CD20.

Results

Most pronounced changes with twice increased expression activity of VEGF has been detected in the affected areas of the lamina propria and were associated with perivascular inflammatory microinfiltration, but unexpected expression in the epithelial layer has been revealed surround of intraepithelial inflammatory cells mainly. Pronounced correlations have been detected as VEGF and CD23 (r= 0.91), VEGF and CD20 (r= 0.87), CD23 and CD20 (r= 0.89).

Discussion

described the changes in the tissues of the oral mucosa could be served as a basis for the development of preventive measures in patients with atopic diseases.discussion

Conclusions

Activation of VEGF is connected with accumulation of inflammatory infiltrate represented by B-lymphocytes, activated macrophages, eosinophils with a correlation in atopic process.
‘There’s no music on a dead planet’
Authors: Rickwood Julie
Published: July 2021

The article focuses on how popular music, environmental activism and climate change blend in the work of Green Music Australia through its projects and the networks it establishes within the music industry. The article describes a contextual background; broadly explores the links between popular music, environmental activism and climate change; and considers the notion of collective action. It concentrates on Green Music Australia by investigating the framing of its political and cultural imperative for climate activism. The article concludes with a reflection that includes the Global Climate Strike.
Investigation of surfactant effect during synthesis of magnesium oxide nanoparticles from bittern using ultrasonic destruction process
Authors: Yunita Fariza Eka , Sulistiyono Eko , Natasha Nadia Chrisayu , Rhamdani Ahmad Rizky , Firdiyono Florentinus , Lalasari Latifa Hanum , Arini Tri , Widyaningrum Enggar Setya , Yustanti Erlina
Published: July 2021

Magnesium oxide (MgO) nanoparticles have been widely used in a variety of applications because of their good surface reactivity. Magnesium oxide from bittern has a larger surface area compared to magnesium oxide from calcined magnesite and magnesium ions precipitation from bittern using sodium hydroxide has higher purity than using calcium hydroxide or ammonium hydroxide. In this research, sodium hydroxide was added to a bittern solution obtaining magnesium hydroxide precipitate, followed by the calcination process to produce magnesium oxide. Nano magnesium oxide was synthesized by the ultrasonic destruction process using ethanol and 2-propanol as media. In this study, sonication time and particle concentration effect on the ultrasonic destruction process were investigated. During the process, the sonication time was varied between 8, 16, 32, 64, and 128 minutes while the magnesium oxide concentration was varied between 1 %, 2 %, and 3 %. Increasing sonication time and particle concentration will decrease the particle size. The previous study shows that particles with very small sizes tend to have an agglomeration effect. The aim of this work is to optimize nano magnesium oxide production from bittern. Surfactant addition was also studied to prevent agglomeration between particles. Four types of surfactant namely anionic (sodium lauryl sulfate), cationic (cetyl tri-methyl-ammonium bromide), amphoteric (fatty acid amido alkyl betaine), and non-ionic (nonylphenol 10 ethoxylated) with a concentration of 1 % and a volume of 0.125 ml were added during the second ultrasonic destruction process. All types of surfactants have a positive effect to prevent agglomeration during the ultrasonic destruction process, with the amphoteric surfactant having the highest performance
Analytical study of the natural bending oscillations of a concave beam with parabolic change in thickness
Authors: Trapezon Kirill , Trapezon Alexandr
Published: July 2021

The synthesis of factorization and symmetry methods produced a general analytical solution to the fourth-order differential equation with variable coefficients. The form and structure of the variable coefficients correspond, in this case, to the problem of the oscillations of a concave beam of variable thickness. The solution to this equation makes it possible to study in detail the oscillations of such and similar, for example convex, beams at the different fixation of their ends' sections. A practical confirmation has been obtained that the beam whose thickness changes in line with the concave parabola law H=a2x2+1, where a is the concave factor, demonstrates an increase in the natural frequencies of its free oscillations with an increase in its rigidity. As an example, the object's maximum deflection dependence on the beam rigidity factor has been established. The nature of this dependence confirmed the obvious conclusion that the deflections had decreased while the rigidity had increased. The evidence from the calculation results can be a testament to the correctness of the reported procedure of problem-solving.
The considered problem and the analytical solution to it could serve as a practical guide to the optimal design of beam structures. In this case, it is very important to take into consideration the place and nature of the distribution of cyclical extreme operating stresses. The resulting ratios to solve the problem make it possible to simulate the required normal stresses in both the fixation and central zones when the rigidity parameter is changed. Designers could predict such a parabolic profile of the beam, which would ensure the required reduction of maximum stresses in the place of fixing the beam. The considered example of solving the problem of the natural oscillations of the beam with rigid fixation of the ends illustrates the effectiveness of the factoring and symmetry methods used. The developed solution algorithm could be extended to study the natural bending oscillations of the beam at other fixing techniques, not excluding a variant of a completely free beam
Investigation on synthesis, structural and nonlinear optical responses of cadmium selenide coated with gold nanoparticles induced by femtosecond laser excitation
Authors: Jassim Nadia Mohammed , Kareem Nada A. , Ibrahim Nada Ismael
Published: July 2021

Nonlinear optical signal enhancement cannot be achieved by using semiconductor materials alone. Here, we show that the recently discovered nonlinear optical behavior of plasmonic nanoparticles and hybrid nanowires enables an enhanced nonlinear optical response. A synthesis, characterization, and nonlinear optical response of synthesized hybrid nanowires structures were studied. The growth of gold nanoparticles (Au NPs) onto cadmium selenide nanowires CdSe NWs with different concentrations of gold nanoparticles coating prepared via an impregnation technique. Au nanoparticles in the CdSe/Au nanowires were uniformly dispersed on the CdSe nanowire surface. The surface morphologies and the propagation manner of hybrid nanostructures were used for transmission electron microscopy (TEM) to study the optical properties of pure and hybrid nanostructures. Dark-field scattering microscopy was used to characterize single CdSe NW and confirm the coating of hybrid CdSe/Au nanowires and characterize the concentration effect of gold nanoparticles. The dark-field scattering spectrum (DFSS) reference to the surface plasmon resonance of nearer Au NPs was observed at ca. 800 nm. By making a comparison between a single cadmium selenide with and without gold nanoparticles coating, hybrid CdSe/Au nanowires exhibit sufficient quality to produce second-harmonic generation stimulated with a pulsed, linearly polarized pump-light from a femtosecond Ti-sapphire laser. The estimated improvement of the second-harmonic generation signal is about ~ 1.8 times, ~ 5.5 times, ~ 6.9 times for low, moderate and full coating of gold nanoparticles, which was mainly due to the high quality of synthesis techniques and good dispersion of gold nanoparticles on CdSe nanowires
Improving pastille manufacturing technology using the developed multicomponent fruit and berry paste
Authors: Kasabova Kateryna , Zagorulko Aleksey , Zahorulko Andreii , Shmatchenko Nataliа , Simakova Olga , Goriainova Iuliia , Volodko Olga , Mironov Denis
Published: July 2021

A method for manufacturing multicomponent fruit and berry paste based on apples, cranberries, hawthorn with a high content of pectin substances has been improved. A special feature of the technique is the concentration in a rotary film apparatus until a dry matter content of 28... 30 % under a mild mode during 25...50 s provided that the puree is preheated to 50 °C. The limiting shear stress for each type of raw material and the effective viscosity index for the samples of the formulations of the studied pastes have been established. It was found that the best properties are demonstrated by composition with the following formulation ratio of components: apple – 50 %; cranberries – 40 %; hawthorn – 10 %. That makes it possible to obtain pastes with the best chemical composition (the higher content of pectin substances, organic acids, ascorbic acid, etc.).
The rational amount of adding 75 % of fruit and berry paste to replace apple puree has been determined and substantiated. That makes it possible to manufacture pastille with a high degree of structure formation, which is confirmed by the viscosity index of 616 Pa∙s, compared with control – 354 Pa∙s. A decrease in the mass fraction of dry substances by 5.0 %, an increase in acidity and reducing substances are ensured, which meets the requirements set by regulatory documents. This amount of paste provides for excellent organoleptic properties, i.e. it gives the products an even red color, pleasant taste, and smell. The developed technology expands the range of "healthy food" by partially replacing raw materials with a low content of physiologically functional components with a multicomponent composition, as well as provides for an increase in the pastille nutritional value. The use of sparing modes of concentration makes it possible to intensify the process of manufacturing a multicomponent paste, which indicates energy and resource-saving technology
Establishing patterns in the compatible electromagnetic and electromechanical transition processes when the starter is powered by a supercapacitor
Authors: Panchenko Anatoly , Smyrnov Oleh , Nechaus Andrey , Trunova Iryna , Borysenko Anna , Sokhin Pavlo , Bagach Ruslan
Published: July 2021

Supercapacitors are commonly used for a guaranteed launch of diesel generators. However, the processes caused by the starting current until the starter shaft rotates are disregarded. The duration of this moment is short but its effect on the rechargeable battery, taking into consideration its service life, is significant. The shape of this pulse, its duration significantly depend on the ratio of system parameters: supercapacitor (rechargeable battery) – starter – diesel generator.
A system of differential equations has been proposed to describe the compatible electromagnetic and electromechanical processes that occur when the starter of the diesel generator is powered from the supercapacitor. A charge is used as a variable quantity. The transitional processes occurring in the stationary starter rotor and the subsequent processes caused by the growth of the electromagnetic starter moment have been taken into consideration.
This paper reports establishing those patterns that are related to the beginning of the starter movement, its entering the mode at the falling voltage of the supercapacitor, the exchange of electrical and magnetic energy accumulated in the inductive elements of the starter.
Using the charge as a variable quantity has made it possible to combine the final values of the preceding process (stationary rotor) with the initial ones of the next one (output to starting speed). Thus, a mathematical notation has been derived that considers most of the parameters of the charge circle of the supercapacitor. The possibility of using an inflated voltage of the supercapacitor to increase the accumulated energy has been clarified.
The processes have been theoretically substantiated, which makes it possible to use a small internal resistance of the starter circuit, the presence of inductive components, an abnormal capacity of the supercapacitor to form the desired shape of the electromagnetic moment. That would make it possible to take into consideration the specific requirements of various systems of guaranteed power supply.
Development of estimation and forecasting method in intelligent decision support systems
Authors: Mahdi Qasim Abbood , Shyshatskyi Andrii , Prokopenko Yevgen , Ivakhnenko Tetiana , Kupriyenko Dmytro , Golian Vira , Lazuta Roman , Kravchenko Serhii , Protas Nadiia , Momit Alexander
Published: July 2021

The method of estimation and forecasting in intelligent decision support systems was developed. The essence of the method is the analysis of the current state of the object and short-term forecasting of the object state. Objective and complete analysis is achieved by using improved fuzzy temporal models of the object state and an improved procedure for processing the original data under uncertainty. Also, the possibility of objective and complete analysis is achieved through an improved procedure for forecasting the object state and an improved procedure for learning evolving artificial neural networks. The concepts of fuzzy cognitive model are related by subsets of influence fuzzy degrees, arranged in chronological order, taking into account the time lags of the corresponding components of the multidimensional time series. The method is based on fuzzy temporal models and evolving artificial neural networks. The peculiarity of the method is the possibility of taking into account the type of a priori uncertainty about the object state (full awareness of the object state, partial awareness of the object state and complete uncertainty about the object state). The possibility to clarify information about the object state is achieved using an advanced training procedure. It consists in training the synaptic weights of the artificial neural network, the type and parameters of the membership function, as well as the architecture of individual elements and the architecture of the artificial neural network as a whole. The object state forecasting procedure allows conducting multidimensional analysis, consideration, and indirect influence of all components of a multidimensional time series with their different time shifts relative to each other under uncertainty. The method provides an increase in data processing efficiency at the level of 15–25% using additional advanced procedures.
Developing a method for determining the dynamic parameters of the operator of a mobile fire engine based on a Segway
Authors: Abramov Yuriy , Basmanov Oleksii , Krivtsova Valentina , Sobyna Vitaliy , Sokolov Dmitry
Published: July 2021

A method for determining the dynamic parameters of the operator of a mobile fire engine based on a segway, which fully characterize its dynamic properties – delay time and inertia was developed. The development of the method includes four stages. At the first stage, the problem of obtaining analytical relationships for determining the dynamic parameters of the operator is solved. These relationships include the frequency characteristics of the operator at a fixed frequency and its static parameter. At the second stage, the choice of a fixed frequency is substantiated using a criterion that minimizes errors in determining the dynamic parameters. It is shown that the fixed frequency for the characteristic parameters of the operator does not exceed 0.5 Hz. The third stage includes substantiation of the procedure for determining the frequency characteristics of the operator and its static parameter. The frequency characteristics of the operator at a fixed frequency and its static parameter are determined numerically. This procedure is based on using the data obtained by measuring the values of the operator’s transfer function at fixed time intervals. To obtain data, an interactive analog engine is used, which can also perform the functions of a simulator. The time intervals are chosen according to the Kotelnikov-Nyquist-Shannon theorem. At the last stage, the procedure for determining the dynamic parameters of the operator of a segway-based mobile fire engine is described.
It is shown that the error in determining the dynamic parameters of the operator of a mobile fire engine does not exceed 9.0 %, if the error in determining its frequency characteristics at a frequency of 2.5 s–1 does not exceed 2.0 %
Thermophysical characteristics of the formed layer of foam coke when protecting fabric from fire by a formulation based on modified phosphorus-ammonium compounds
Authors: Tsapko Yuriy , Tsapko Аleksii , Bondarenko Olga , Chudovska Viktoriia
Published: July 2021

This paper reports the analysis of flame retardants for fabrics that has established that the meagerness of the data that explain and describe the process of fire protection, as well as the neglect of elastic coatings, leads to the combustion of structures made from fabrics under the influence of flame. The development of reliable methods to study the fire protection conditions for fabrics leads to the design of new types of fireproof materials. Therefore, it becomes necessary to define the conditions for the formation of a barrier for burning and flame propagation by a piece of fabric and for establishing a mechanism that would inhibit a temperature transfer to the material. To address this issue, an estimation-experimental method has been devised for determining thermal conductivity when using a fire protection agent as a coating, which makes it possible to assess the thermal conductivity coefficient under the effect of high temperature. Based on the experimental data and theoretical dependences, the coefficient of thermal conductivity for the fire-resistant layer of foam coke was calculated, 0.034 W/(m∙K), which, accordingly, ensures the heat resistance of the fabric. The study results have proven that the process of the thermal insulation of fabric involves the formation of soot-like products at the surface of the sample. The inhibition of the process of heat transfer to the material treated with a composition based on modified phosphorus-ammonium compounds is characterized by the formation of a heat-protective layer of coke at the surface of the fabric. The maximum possible penetration of temperature through the thickness of the coating has been estimated. At the surface of the sample, a temperature was generated that significantly exceeds the ignition temperature of the fabric, and, at the non-heated surface, does not exceed 150 °C. Thus, there is reason to assert the possibility of targeted adjustment of fire protection processes in the fabric by applying coatings that can form a protective layer on the surface of the material, which inhibits the rate of heat transfer
Approach to assessment of prerequisites for implementation of strategic directions of innovative development of industrial enterprises
Authors: Illiashenko Sergiy , Illiashenko Nataliia , Shypulina Yuliia , Raiko Diana , Bozhkova Viktoriia
Published: July 2021

The present research substantiates the theorical and methodological foundations of quantitative assessment of the prerequisites for the implementation of strategic directions of innovative development of industrial enterprises under conditions of changing technological arrangement and the fourth industrial revolution. External and internal prerequisites for catching-up, leading and outstripping innovative development were determined and systematized. The two-step approach to assessing the sufficiency of prerequisites for the implementation of these directions was developed. It was proposed to assess external prerequisites according to the relative values of the indicators of the Global Innovation Index of the analyzed country, which take into account the highest and the lowest estimates of all countries Unlike existing approaches, the point-based score, rather than rating estimates of the indicators of countries are taken into account, which increases the assessment objectivity. The compliance of quantitative estimates with the levels of sufficiency of external prerequisites was determined using the Harrington Verbal-Numerical scale. It was proposed to assess internal prerequisites according to the author’s method of expert evaluations, which unlike existing ones, allows assessing the level of sufficiency of subsystems of the potential of innovative development of an enterprise. The two-step approach allows quantitative and comprehensive assessment of sufficiency of the prerequisites for the implementation of strategic directions of innovative development of industrial enterprises. It is possible to identify problems of prerequisites’ sufficiency, which allows their reasonable correction. The sufficiency of prerequisites for alternative directions of innovative development of machine-building enterprises was evaluated using the new approach and the best directions were chosen. The analysis time was reduced by 25–33 %, the accuracy of choice of directions and the effectiveness of their implementation strategies are increasing. The new approach improves strategic management of innovative development of industrial enterprises in the context of technological transformations