bluuebunny/crossref_metadata_2025 huggingface dataset:
Features of structure formation when surfacing steel (iron) on titanium with plasma sprayed coatings in the technology of obtaining butt joint of bimetallic plates "titanium – steel"
Authors: Korzhyk Volodymyr , Khaskin Vladyslav , Ganushchak Oleg , Strohonov Dmytro , Illiashenko Yevhenii , Fialko Nataliia , Guo Chunfu , Grynyuk Andrii , Peleshenko Sviatoslav , Aloshyn Andrii
Published: May 2023

The object of this study is structural formation during the surfacing of steel (iron) on titanium with plasma-sprayed coatings to obtain a butt connection of titanium-steel bimetallic plates. The task to be solved was to devise a technology for applying a barrier layer between titanium and steel to obtain a defect-free butt joint of the edges of bimetallic sheets of carbon steel, clad with a layer of titanium, under conditions of arc or plasma surfacing of carbon steel on titanium. The application of the barrier layer was carried out by plasma spraying of steel wire or iron powder. In this case, a coating with a thickness of 150...750 μm was applied on Grade2 titanium, on which 1–2 mm thick layers of materials similar to the sprayed ones were deposited by arc and plasma deposition. It was established that during spraying with subsequent surfacing of steel wire or iron powder, the main technological factors for eliminating cracks in the resulting compound are the thickness of the sprayed coating and the amount of linear surfacing energy. The thickness of the sprayed coating was selected (at least 400...600 microns) followed by plasma surfacing of ER70S-6 steel wire with a diameter of 1.0 mm or CNPC-Fe200 iron powder with unit energy up to ~200...250 J/mm. A defect-free transition layer from titanium to steel was obtained. It is a continuous layer with a thickness of 50–60 microns, consisting of intermetalides FeTi and FeTi2, as well as a β-phase titanium with an enhanced iron content, which retains certain ductility without cracks and other defects. With the help of the devised approach for connecting titanium-steel bimetallic edges, it is planned to manufacture seam bimetallic pipes for main pipelines to transport oil and gas raw materials extracted from wells.
LQR controller design for stabilization of non-linear DIP system based on ABC algorithm
Authors: Thanoon Mohammad A. , Awad Sohaib R. , Abdullah Ismael Kh.
Published: May 2023

Inverted pendulum systems, such as double or single, rotational or translational inverted pendulums are non-linear and unstable, which have been the most dominant approaches for control systems. The double inverted pendulum is one kind of a non-linear, unstable system, multivariable, and strong coupling with a wide range of control methods. To model these types of systems, many techniques have been proposed so that motivating researchers to come up with new innovative solutions. The Linear Quadratic Regulator (LQR) controller has been a common controller used in this field. Meanwhile, the Artificial Bee Colony (ABC) technique has become an alternative solution for employing Bee Swarm Intelligence algorithms. The research solutions of the artificial bee colony algorithm in the literature can be beneficial, however, the utilization of discovered sources of food is ineffective. Thus, in this paper, we aim to provide a double inverted pendulum system for stabilization by selecting linear quadratic regulator parameters using a bio-inspired optimization methodology of artificial bee colony and weight matrices Q and R. The results show that when the artificial bee colony algorithm is applied to a linear quadratic regulator controller, it gains the capacity to autonomously tune itself in an online process. To further demonstrate the efficiency and viability of the suggested methodology, simulations have been performed and compared to conventional linear quadratic regulator controllers. The obtained results demonstrate that employing artificial intelligence (AI) together with the proposed controller outperforms the conventional linear quadratic regulator controllers by more than 50 % in transient response and improved time response and stability performance
Developing the GoogleNet neural network for the detection and recognition of unmanned aerial vehicles in the data Fusion System
Authors: Semenyuk Vladislav , Kurmashev Ildar , Lupidi Alberto , Cantelli-Forti Alessandro
Published: May 2023

This work reports a study into the possibility of using the GoogleNet neural network in the optoelectronic channel of the Data Fusion system. The search for the most accurate algorithms for detecting and recognizing unmanned aerial vehicles (UAVs) in Data Fusion systems has been carried out. The data processing scheme was selected (merging SVF state vectors and merging MF measurements), as well as the sensors and recognition models on each channel of the system. The Data Fusion model based on the Kalman Filter was chosen, integrating radar and optoelectronic channels. Mini-radars LPI-FMCW were used as a radar channel. Evaluation of the effectiveness of the selected Data Fusion channel model in UAV detection is based on the recognition accuracy. The main study is aimed at determining the possibility of using the GoogleNet neural network in the optoelectronic channel for UAV recognition under conditions of different range classes. The neural network for the recognition of drones was developed using transfer training technology. For training, validation, and testing of the GoogleNet neural network, a database has been built, and a special application has been developed in the MATLAB environment. The capabilities of the developed neural network were studied for 5 variants of the distance to the object. The detection objects were the Inspire 2, DJI Phantom 4 Pro, DJI F450, DU 1911 UAVs, not included in the training database. The UAV recognition accuracy by the neural network was 98.13 % at a distance of up to 5 m, 94.65 % at a distance of up to 20 m, 92.47 % at a distance of up to 20 m, 90.28 % at a distance of up to 100 m, and 88.76 % at a distance of up to 200 m. The average speed of UAV recognition by this method was 0.81 s.
Research of process water of a thermal power plant
Authors: Kutum Bayan , Ospanova Didar , Nussupbekov Bekbolat , Oshanov Yerlan
Published: May 2023

The article is devoted to the study of technical water used in thermal power plants. One of the devices of thermoelectric plant are heat exchangers, heat exchangers consist of pipes of different diameters. Heat exchangers used in production plants are made of carbon steel, suitable for high temperatures (up to 565 °C). At the same time inside the heat exchangers used for a certain period of time, a scale is formed in the form of a solid sediment, which reduces the thermal efficiency of heat carriers. Therefore, in this paper, the object of research are the heat transfer fluids of industrial heat exchangers, namely feed and process water. In order to obtain feed water at industrial thermal power plants, special water treatment processes are carried out. That is, its main purpose is to prevent the formation of solid deposits in heat exchangers. The studied water samples were taken directly from the thermal power plant from different stages of water treatment, i. e. raw water entering the chemical shop, treated water entering the deaerator, feed water entering the boiler. As a result of the study, water samples related to the formation of scale on the surfaces of heat exchangers, i. e. dosed amounts, elemental composition and particles were studied. During the study, hourly, daily and monthly dosages of reagents were determined. In addition, the elemental compositions of raw water, pure water and feed water of the thermal power plant were investigated. The results of this study allow to explore ways of economical and effective descaling formed in heat exchangers
Determining the impact of global-local transformations of property on the formation of nanoeconomics
Authors: Artomova Tetiana , Ostapenko Tetiana , Britchenko Igor
Published: May 2023

The object of research is the relationship between the processes of formation of the information-network society and the global-local transformation of property relations at the turn of the XX–XXI centuries. The problem has been identified that the limitations of theoretical approaches to explain the content and interrelation of property relations and the social meaning of high-tech development have led to an increase in general socio-economic instability. To solve the problem, the definition of the institution of property as an economic good is provided. A three-level traditional model of public management has been highlighted. It is shown that the existing triple structure of the public sector of economy should acquire a different value content. The new model in the dynamic unity of markets of pure public benefits, public goods, private goods harmonizes public interests, strengthens relations of trust. This model forms the foundations for the formation of nanoeconomics in a broad sense as the forerunner of harmonious institutional architectonics of the economy. Nanoeconomics, as part of baby economics, human economics, and economics of nanotechnology, is based on the principles of rational behavior in making economic decisions within the limits of power. In the depths of baby economics, skills and competencies are formed in handling property. The human economy ensures the proper implementation of property functions. Within the experimental part of the study, a mathematical model of multifactor regression is constructed. The model confirmed the presence of dense dependence (0.9076) of the growth of GDP per capita on the state of distribution of property rights in the national economy. The area of practical use of the results is the post-war reconstruction of Ukraine's economy through the activation of its domestic business potential.
Development of improved technology for the production of strong wines of marsala type on the basis of enzymatic catalysis
Authors: Rahimov Namiq , Kazimova İlhama , Yusifova Mehriban , Nasrullayeva Gunash
Published: May 2023

In the assortment of wines produced in the Republic of Azerbaijan, strong wines occupy a significant place. To improve their technology, a number of technological modes and parameters aimed at improving the quality of finished products and the use of modern technology were proposed and tested.
As a result of the study, the effectiveness of the use of the mixed-action enzyme preparation Vinozim or Ultrazyme in the production of strong vintage wine of the Marsala type according to the blending scheme using the first must and press fractions was determined. It has been established that the use of this preparation in the process of fermentation of pomace provides a rational supply of phenolic substances for blends of marsala, and in the process of infusion of pomace of nitrogenous components and pentosis.
The fundamental possibility of obtaining high-quality wine materials for vintage marsala under the conditions of processing grapes of the variety Bayan-Shirei and Rkasiteli "in the red way" has been studied. Rational modes for obtaining blended wine materials for Marsala, based on the technology of fermentation or long-term infusion of pomace, have been developed. The effect of various enzyme preparations on the quality of wine materials for Marsala has been studied; a rational variant of blending and aging of wine materials for Marsala was experimentally substantiated.
It has been established that the rational option for obtaining vintage marsala is a blend of dry-fortified wine material and  mistel, or dry-fortified wine material and vacuum must. Analysis of the dynamics of maturation of blended wine materials and data on changes in their chemical composition confirmed the choice  of a rational scheme for their production and made it possible to establish the expediency of aging blends for marsala for 2.5 years. To improve the quality of ordinary marsala wine, a new technique for producing vacuum must was devised
Study of the influence of ingredients on biopharmaceutical factors and pharmacological activity of a medicinal product with carrot extract and rutin
Authors: Ruban Olena , Al Sayasneh Mohammad , Kovalevska Inna , Grudko Volodymir , Lytkin Dmytro , Dunaіevska Oksana
Published: May 2023

Aim. The work aimed to study the influence of the components of a soft rectal medicine with carrot root extract and rutin on biopharmaceutical parameters and its pharmacological activity.

Materials and methods. The objects of the study were samples of soft pharmaceutical forms made on different bases. Pharmacological, biopharmaceutical, physicochemical and pharmacotechnological research methods were used in the study.

The results. According to the data of organoleptic studies, determination of colloidal stability, and determination of pH, it was established that the studied samples were stable during the entire observation period. According to the data of rheological studies, it was established that all systems are thixotropic. However, the recovery time of the system is different, which is related to the physicochemical properties of auxiliary substances included in the samples. The performed spectral analysis of dialysate solutions of experimental samples of soft medicine indicates the possibility of quantitative determination of the number of flavonoids in dialysates in terms of rutin. The components of the base of the samples and the thick extract of carrot roots do not interfere with the determination of rutin in dialysates with pH 6.8 by the absorption spectrophotometry method at a wavelength of 352 nm. The analysis of the obtained results of the study of the release of rutin from samples into a phosphate buffer solution by dialysis through a semipermeable membrane shows that the complete release is provided by auxiliary substances used in the preparation of sample No. 4, which is an emulsion of the first kind. The obtained data from pharmacological studies on the dynamics of planimetric indicators on the model of stencil wounds in rats demonstrated a wound-healing effect in all the studied samples and the reference agent - Hemorol suppositories. However, using sample No. 4 in the treatment of a stencil wound promotes faster healing, which in clinical use can contribute to reducing the risk of infection, the spread of infection, and reducing the area of ​​the wound defect.

Conclusions. According to the results of the complex studies, moderate advantages of sample No. 4 over the comparison drug and other samples have been established, determining the perspective of further research
Innovations in the infant food industry — into the practice of pediatricians
Authors: Editorial Article
Published: May 2023

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Аindustry — into the practice of pediatricians of vaccinal prevention of pneumococcal disease for reliable child's health protection
Authors: Editorial Article
Published: May 2023

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Innovative approach to the target therapy of atopic diseases in children
Authors: Editorial Article
Published: May 2023

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Resolution of the Advisory Council on the criteria for the appointment of pathogenetic therapy of hypophosphatasia in children
Authors: Editorial Article
Published: May 2023

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The Influence of the Human Factor on Vigilance in Driving
Authors: Buriak S. Y , Gololobova O. O , Serdiuk T. M , Afanasov A. M , Skalko V. V , Yamburh K. O , Bilukhin D. S
Published: May 2023

Purpose. The purpose of this study is to find ways to improve the system for monitoring and controlling the human condition, which is directly involved in driving vehicles, by borrowing knowledge and achievements from the field of scientific research in matters related to determining a person's response to the action of various factors of influence, irritating factors, interaction with other people and technical means, the ability to maintain long-term ability to work, etc. Methodology. Since transportation requires both high professional and personal skills, it is necessary to develop and implement systems for monitoring and controlling the human condition that would meet the needs of the achievements of the modern level of technical development. To determine the factors of influence on a person, an analysis of research in this area was conducted. Findings. It is emphasized that each person has, firstly, his or her own peculiarities, and secondly, cannot be in two identical states at different times. Given these and other aspects, a universal approach should be developed to determine and verify a person's responsibility for making relevant decisions. The main factors influencing the driver's attention are identified. Among them, in addition to the physiological one, the psycho-emotional state takes a significant place, which also needs to be taken into account. Originality. The development of technology leads to new needs and provides new opportunities in almost all industries. One of these is the study of humans. The proposed approach allows us to take a broader look at the role and place of a person, his or her integration into the transportation process. Practical value. The analysis of the forms of influence and types of load on different systems of human perception made it possible to outline the task of determining the ability of a person to act responsibly under the influence of significant factors.
Sectoral deindustrialization and long-run stagnation of Brazilian manufacturing
Authors: MORCEIRO PAULO CÉSAR , GUILHOTO JOAQUIM JOSÉ MARTINS
Published: May 2023

ABSTRACT In Brazil and elsewhere in the world, diagnoses of deindustrialization are concentrated in aggregate manufacturing, so policies can be ineffective if deindustrialization has a sector-specific component. This study quantifies and analyses deindustrialization for the individualised manufacturing sub-sectors. To do this, unpublished series of the manufacturing sub-sectors’ share in the Brazilian GDP from 1970 to 2016 were created, based on official IBGE data. The results show that the manufacturing sub-sectors have deindustrialised at different intensities and periods of aggregate manufacturing, and a sub-sectoral approach reveals traces ignored by the literature on the quality of deindustrialization. We conclude that the Brazilian deindustrialization is normal (and expected) for the labour-intensive manufacturing sub-sectors, but premature (and undesirable) for the technology-intensive sub-sectors. Therefore, Brazilian deindustrialization has negative consequences for the country’s future scientific and technological development.
Estudo da adição de fibras de máscaras faciais N95, sílica ativa e pó de mármore em argamassa de alto desempenho
Authors: Oliveira Sandilla , Soranço Laura , Pereira Thales , Games Bernardo , Ferreira Clarisse , Barbosa Maria Teresa
Published: May 2023

RESUMO A pandemia do coronavírus além da crise de saúde global evidencia prejuízos ao meio ambiente devido ao elevado número de máscaras faciais descartadas, tornando necessário o desenvolvimento de pesquisas para minimizar os riscos ambientais associados aos de equipamentos de proteção individual utilizados pela população. Este estudo visa reduzir os resíduos gerados pela pandemia, aproveitando as máscaras faciais, inserindo-as na confecção de argamassas. Efetuou-se processamento (trituramento) das máscaras e sua inclusão em teores de 1,4% e 2,0% em relação ao consumo de cimento. Os produtos foram comparados com um traço de referência e avaliados quanto às propriedades físicas e mecânicas. Como resultado, constatou-se que a adição do fibras da máscara interfere nas propriedades ocasionando um incremento na taxa de absorção de água, bem como reduções na resistência à tração e à compressão, respectivamente 30% e 50%, em decorrência de falhas na interação matriz/fibra, o que poderá limitar o emprego da mistura. Entretanto, o presente estudo contribui para a agenda brasileira no que se refere ao desenvolvimento sustentável urbano, regional e nacional, através de uma abordagem inovadora, possibilitando a redução da degradação ambiental pelo descarte das máscaras e a confecção de novos materiais a serem empregados no setor da construção civil.
Incidence of memory complaints during the COVID-19 pandemic in Southern Brazil: findings from PAMPA cohort
Authors: Feter Natan , Caputo Eduardo Lucia , Leite Jayne Santos , Delpino Felipe Mendes , Cassuriaga Júlia , Silva Carine Nascimento da , Silva Marcelo Cozzensa da , Reichert Felipe Fossati , Rombaldi Airton José
Published: May 2023

ABSTRACT. Population-level studies investigating the incidence of memory complaints during the COVID-19 pandemic are scarce. Objective: This study aimed to examine the incidence of memory complaints over 15 months during the COVID-19 pandemic in adults from Southern Brazil. Methods: Data from the PAMPA (Prospective Study about Mental and Physical Health in Adults) cohort, a longitudinal study with adults residing in Southern Brazil, were analyzed. An online-based, self-administered questionnaire was used to assess self-rated memory. Participants rated their memories as excellent, very good, good, fair, or poor. Incident memory complaints were defined as worse memory perception from baseline to follow-up. Cox proportional hazard models were used to identify factors associated with the increased risk of memory complaints. Results: During follow-up, a cumulative incidence of 57.6% for memory complaints was observed. Female sex (hazard ratio [HR] 1.49; 95% confidence intervals [CI] 1.16–1.94), lack of access to prescribed medicine (HR: 1.54; 95%CI 1.06–2.23), and worsened anxiety symptoms (HR: 1.81; 95%CI 1.49–2.21) were associated with an increased risk of memory complaints. Regular practice of physical activity was associated with a reduced risk of memory complaints (HR: 0.65; 95%CI 0.57–0.74). Conclusion: Since the COVID-19 pandemic, 6 in 10 adults in Southern Brazil have developed memory complaints. Factors including sex and lack of medications increased the risk of incident memory complaints. Physical activity reduced the risk of incident memory complaints during the COVID-19 pandemic.
Vigilância à saúde da doença de Chagas em municípios endêmicos de Minas Gerais: percepção e conhecimento de profissionais da vigilância entomológica
Authors: Souza Izabella Cristina Alves , Rodrigues Fernanda Cristina Santos , Souza Janice Maria Borba , Vieira Alexandra Paiva Araújo , Diotaiuti Lileia Gonçalves , Ferreira Raquel Aparecida
Published: May 2023

Resumo Objetivo Traçar o perfil sociodemográfico dos agentes de combate a endemias (ACEs) dos municípios que compõem a microrregional de saúde de Itaúna, Minas Gerais; e apreender a percepção dos profissionais da vigilância entomológica sobre a doença de Chagas e serviços de saúde. Metodologia Aplicou-se um questionário semiestruturado aos ACEs e foi realizado um grupo focal com os coordenadores de endemias e digitadores. Resultados Dentre os ACEs, a maioria era do sexo feminino, entre 21 e 40 anos, com ensino médio, possuindo contrato de trabalho temporário há menos de 5 anos. Foi possível apreender: as más condições de trabalho dos ACEs, destacando-se a alta rotatividade e defasagem salarial; ausência de ações de promoção à saúde relacionadas à doença de Chagas; desarticulação entre a Atenção Primária à Saúde (APS) e Vigilância à Saúde (VS); e críticas às ações de controle da doença pós-processo de descentralização da saúde. Conclusões Há urgência na concretização da legislação inerente à natureza trabalhista e às condições de trabalho dos ACEs, bem como ao planejamento conjunto das ações de APS e VS, garantindo a atenção integral por meio de ações de promoção à saúde voltadas à população, focando especialmente a doença de Chagas, consolidando o SUS.
Perfil dos protocolos de ensaios clínicos sobre Covid-19 com participação da Fiocruz
Authors: Souza Vilênia Toledo de
Published: May 2023

Resumo Objetivo Identificar a atuação da Fiocruz em estudos clínicos relacionados à Covid-19. Analisar as diferentes terminologias utilizadas para se referir à participação da Fiocruz. Mapear a região desses estudos. Mensurar a quantidade dos estudos aprovados nas plataformas de registro de estudos clínicos e bases ético-regulatórias. Dentre estes, analisar as características metodológicas e de boas práticas dos protocolos dos estudos intervencionais. Métodos Foram revisadas as bases de dados da Agência Nacional de Vigilância Sanitária (ANVISA), Comissão Nacional de Ética em Pesquisa (Conep), Registro Brasileiro de Ensaios Clínicos (ReBEC), ClinicalTrials.gov, International Clinical Trials Registry Platform (ICTRP), US Food and Drug Administration (FDA) e Instituto Nacional de Propriedade Industrial (INPI). Resultados Foram encontrados 53 estudos clínicos sobre Covid-19 com a participação da Fiocruz em 39 destes como instituição proponente. Dentre os 53 estudos, 19 estão em plataformas de registro. Sobre os estudos intervencionais registrados, cinco são de prevenção e nove de tratamento. A intervenção mais analisada nestes estudos foi cloroquina/hidroxicloroquina. Observou-se ainda maior concentração dos estudos clínicos na Região Sudeste, com o total de 37. Conclusão Foram analisadas algumas limitações no delineamento metodológico que podem afetar o alcance dos estudos. Espera-se que os dados obtidos sejam utilizados para orientação futura de estudos clínicos sobre Covid-19 com participação da Fiocruz.
Barreiras e facilitadores para adesão à prática de exercícios por pessoas com dor crônica na Atenção Primária à Saúde: estudo qualitativo
Authors: Borges Paula de Andrade , Koerich Micheline Henrique Araujo da Luz , Wengerkievicz Karina Correa , Knabben Rodrigo José
Published: May 2023

Resumo Introdução Exercícios e atividades físicas são um dos principais componentes no tratamento de pessoas com dores crônicas, sendo incentivados pelos profissionais da Atenção Primária à Saúde. Entretanto, sua adesão é frequentemente baixa. Objetivo Analisar a percepção dos participantes de grupos de dor crônica na Atenção Primária, sobre as barreiras e facilitadores para adesão à prática de exercícios. Metodologia Estudo qualitativo, descritivo, realizado através de entrevistas com 16 participantes de grupos de dor crônica ofertados por Unidades Básicas de Saúde no município de Florianópolis. Utilizou-se a Análise de conteúdo para interpretação dos dados. Resultados Foram verificados como facilitadores: resultados percebidos, acompanhamento profissional, prazer na atividade física e grupos de exercício como apoio social. Como barreiras foram observadas: exacerbação da dor, medo de lesão ou piora dos sintomas e condição financeira. O ambiente físico e as demandas e rotinas diárias encaixaram-se em ambos – barreiras e facilitadores. Conclusão Os resultados forneceram subsídios para que os profissionais da Atenção Primária possam planejar e desenvolver estratégias que assegurem o engajamento das pessoas com dor crônica em programas de exercícios e/ou atividade física.
First record of the exotic species platyfish Xiphophorus maculatus (Günther, 1866) in an urban floodplain of a Brazilian neotropical river
Authors: Stefani Marta Severino , Silva Fábio Leandro da , Smith Welber Senteio
Published: May 2023

Abstract: Aim This work reports the first occurrence of the exotic species Xiphophorus maculatus (Günther, 1866) in the Sorocaba River Basin. The introduction of non-native fish species has become common and many species have been introduced mainly through sport fishing, aquaculture and aquarium keeping. In the case of the Poeciliidae, most of the introduced species that have been recorded come aquarium keeping. The environment where the specimens were captured had a large number of macrophytes due to anthropization and is located in a strictly urbanized area of the municipality. Methods The collection was done through a rectangular dip net, with measures of 70 cm x 60 cm and a mesh of 1 mm. The specimens were anesthetized in eugenol solution, fixed in 10% formalin solution and preserved in 70% alcohol. The specimens were later deposited in a scientific collection. Results The record includes two female specimens from an urban wetland on the Sorocaba River, São Paulo State, Brazil. Conclusions In the municipality of Sorocaba, 63 species of fish have already been identified, belonging to 7 orders and 19 families and 6 are exotic, such as the Xiphophorus maculatus. Urban floodplains are poorly studied environments, thus presenting great potential for the occurrence of species that have not yet been inventoried. The monitoring and inventory of exotic species must be carried out systematically so that mitigating measures can be proposed in relation to the control of these species, and this is one of the major causes of biodiversity loss. In addition, developing a program for returning unwanted fish to aquarium stores can be effective in preventing the introduction of new aquarium fish and displaying warnings informing of the negative ecological effects of releasing aquarium fish in all bags, fish plastics, and aquarium store websites.
BUENAS PRÁCTICAS DE INNOVACIÓN SOCIAL EN MUJERES COMERCIANTES INFORMALES DE LA PARROQUIA SININCAY, CANTÓN CUENCA, ECUADOR
Authors: Ortega Yonimiler Castillo , Arbito Bryam Stalin López
Published: May 2023

La presente investigación tuvo como objetivo analizar las buenas prácticas de innovación social de mujeres comerciantes informales de la parroquia Sinincay, cantón Cuenca, Ecuador, en su actividad económica principal. Bajo un enfoque mixto se utilizaron métodos teóricos y empíricos, y aplicaron las técnicas: encuesta y grupos focales. Se pudo constatar que el 26 % de las mujeres encuestadas ofrecen la yapa como acción de innovación en venta; el 42 % se mantienen recorriendo la ciudad para tener mayor acercamiento a los clientes y el 31.6 % utilizan el trato amable, ya que consideran que facilita sus ventas; además, se valoró que su nivel de innovación social es de nuevos principios.
Effects of a modified argon glow plasma source on PET polymeric surface properties
Authors: Al-Yousef Haifa A , Atta Mervat R , Abdeltwab Eslam , Atta Ali , Abdel-Hamid Mostafa M
Published: May 2023

A homemade plasma source with a Langmuir electrical probe was built in this work to create a plasma beam that could be utilized successfully in a range of uses. By modifying the operational parameters, including the discharging voltage, cathode–anode spacing and argon (Ar) pressure, a steady discharging medium was achieved. Additionally, a locally designed electrical probe was introduced into the discharging plasma to monitor the current–voltage (I–V) characteristics curve in order to assign plasma properties. The probe was moved to any intended destination in the plasma volume and had the following dimensions: 1 mm length and 0.5 mm diameter. The gas pressure and probe–cathode separation were modified to measure the plasma characteristics, including the electron density and electron temperature. It is found that as the pressure rises from 0.15 to 0.3 Torr, the electron temperature T e varies from 4.66 × 104 to 2.91 × 104 eV. When a poly(ethylene terephthalate) (PET) polymeric film is subjected to argon plasma beams, its surface wettability is altered. When the plasma period is increased from 0 to 8 min, the overall surface free energy rises from 32.2 to 67.7 mJ/m2. Additionally, the developed plasma source is highly efficient and tailored to satisfy the needs of applications such as polymeric surface modifications.
Understanding the performance of bridge decks through full-scale accelerated testing
Authors: Rashidi Mehdi , Azari Hoda , Braley John , Zobel Robert
Published: May 2023

Understanding the long-term performance of bridges plays a major role in the selection of appropriate asset-management strategies, which eventually reduce life-cycle costs and extend the service life of a bridge. To understand bridge performance better, the Federal Highway Administration initiated a research project utilising accelerated testing of full-scale bridge superstructure systems subjected to cyclic moving wheel loads and freeze–thaw environmental conditions. As part of the research project, complementary non-destructive evaluation (NDE) techniques were used to assess the performance of a full-scale bridge deck during the curing and loading period. NDE results, shortly after construction, revealed a smaller cover depth of rebars in the middle section of the deck. This has likely created a preferential path for the subsequent deterioration of the deck. It was suggested to use a scaled version of the electrical resistivity (ER) values to improve the consistency between temporal ER measurements of the deck, and it was shown that combining construction information with NDE results can improve the interpretation of results. Overall, the results showed the importance of NDE for quality assurance of new construction and provided a better understating of the long-term bridge deck performance.
The effect of lignin-based polyols on the properties of polyurethane coatings
Authors: Khorshidi Fatemeh Hassani , Najafi Saeed Kazemi , Najafi Farhood , Pizzi Antonio , Sandberg Dick , Behrooz Rabi
Published: May 2023

The aim of this research was to replace petroleum-based polyols with polyols made from lignin and nano-lignin in the production of polyurethane coatings. Lignin and nano-lignin were first reacted with either diethylenetriamine or ethylenediamine. Subsequently, they were modified with propylene carbonate. The lignin- and nano-lignin-derived polyols replaced the conventional acrylic polyol in the production of polyurethane coatings. The results of Fourier transform infrared analysis showed that urethane, isothiocyanate and strong C–N bonds were formed in nano-lignin-based polyurethanes. Moreover, the surface adhesion test of the lignin-based polyurethane coating showed that with increasing lignin content, the adhesion strength of the coating decreased. Mixing lignin nanoparticles into the polyurethane substrate caused the adhesion strength to rise from 1.67 to 4.52 MPa. An increase in the amino nano-lignin content of oil-based polyol of up to 7% improved the curing of the coating and increased the scratch resistance to more than 5 kg. The results showed that lignin from a mechanical pulping process has a direct effect on reducing the smoothness and the glossiness of polyurethane coatings.
Servis sistemlerine yönelik simülasyon yazılımı geliştirme ve personel optimizasyonu: QS-Sim yazılımı
Authors: KOCAER Emine Rumeysa , KORUCA Halil
Published: May 2023

İşletmelerde bir ürün ya da hizmete olan talebin artması ve çalışan sayısının yetersiz kalması, hammadde/ yarı mamul stoklarının düşük olması vb. nedenlerden dolayı müşteriler beklemek zorunda kalmaktadır. Kuyrukta bekleme süresinin azaltılması müşteri memnuniyetini artırır. Uzun kuyruklar müşterilerin sistemden ayrılmasına ve bunun sonucunda personelin boşta kalmasına ve maliyetlerin artmasına neden olur. Kuyrukta bekleme süresi ve personel maliyetleri arasında karar vermede ikilem oluşmaktadır.

Bu çalışma kapsamında, hizmet sektörüne yönelik kuyruk sistemi modellerinin benzetilebildiği ve performansının ölçülebildiği ve personel optimizasyonun gerçekleştirilebildiği esnek bir simülasyon yazılımı (QS-Sim) geliştirilmiştir. Geliştirilen yazılım ile bir hizmet veya üretim sistemi modellenebilmektedir. Sisteme yeni paralel istasyonlar eklenebilmekte, müşteri geliş ve servis süresi ise sürece uygun dağılımlar ile; Poisson, Üstel, Normal, Erlang dağılımları veya Deterministik olarak düzenlenebilmektedir. Yazılım yardımıyla, hizmet sektöründe karşılaşılan bekleme hattı problemlerine yönelik performans ölçülebilmekte ve personel optimizasyon arayüzü farklı personel sayılarındaki maliyetler elde edilebilmektedir. Farklı sektörlerden elde edilen veriler ile oluşturulan modellerin simülasyon sonuçları ve aynı modellerin personel optimizasyonu gerçekleştirilmiştir. Farklı sektörlere ait örenk Simülasyon modelleri ve personel optimizasyon sonuçları karşılaştırmalı olarak bu çalışmada analiz edilmiştir.
Tarihi bir caminin hasar sınırlarının irdelenmesi, Konya Sultan Selim Cami örneği
Authors: KOCAMAN İrfan , KAZAZ İlker
Published: May 2023

Tarihi yığma camiler günümüzde aktif şekilde kullanılan ve geleceğe güvenle aktarılması gereken kültürel bir mirastır. Genellikle yığma duvar taşıyıcı sistemine sahip bu yapılar, farklı depremlerde ciddi hasarlar gördüğü gözlemlenmektedir. Tarihi yığma camilerin deprem davranışlarının belirlenmesi amacıyla birçok çalışma yürütülmektedir. Ancak çeşitli malzeme özelliklerindeki, yıkılma mekanizmaları, belirsiz geometri ve yükleme durumları gibi sebepler bu yapıların deprem davranışının belirlenmesini zorlaştırmaktadır. Bu çalışmada Konya Karapınar Sultan Selim Caminin sonlu eleman modeli farklı iki malzeme özellikleri (E=750fc ve E=200fc) kullanılarak oluşturulmuştur. Sonlu eleman modellerinde 5 farklı yer hareketi kullanılarak zaman tanım alanında analizleri gerçekleştirilmiştir. Dinamik analizler neticesinde, caminin farklı yıkılma mekanizmaları ortaya konmuştur. Ayrıca caminin deplasmana dayalı deprem performans limitleri belirlenerek yönetmelik, kılavuz ve literatür önerileri ile karşılaştırılmıştır. Elastisite modülünün, caminin performans limitlerine etkisi irdelenmiştir.
De ruinas y castillos: un proyecto de investigación sobre la restauración monumental en el siglo XXI
Authors: Gómez de Terreros Guardiola María del Valle
Published: May 2023

This article deals with the objectives, methodology and results of a study on the criteria applied in the restoration of Andalusian castles and defensive architecture in the 21st century, carried out as a part of the R&D project Ruins, looting and interventions for Cultural Heritage, which focuses mainly on the analysis of the efficiency of cultural heritage protection regulations and recommendations, particularly in the light of the evident dissension between professional jurists and cultural heritage managers regarding the role of such norms. The various models of intervention detected can all be accepted given the laxity that characterizes both current legislation and the most relevant national and international guidelines.
Platero, ingeniero y concejal: el compostelano Miguel Bruzos Cimadevila (1847-1916), un artista polifacético desconocido.
Authors: Pérez Varela Ana
Published: May 2023

Until now, Miguel Bruzos Cimadevila was an unknown name in the historiography of Compostela, which, on theother hand, has not cared too much about the art of silversmithing. In this article we set out to collect news about the silversmith, and in this way, we established his family relationship with José V. Lorenzo, another important silversmith from Compostela at the time. In addition to news about important lost pieces of silversmithing for highlighted characters —even works for La Habana and London—, whose memory we have rescued thanks to the historical press, the most interesting thing was to learn about his work as an industrial engineer, planning the construction of a hydroelectric plant on the Tambre River and patenting a fire alarm device.
El convento de San Esteban de Salamanca en el siglo XIV. Precisiones cronológicas, topografía devocional y funeraria
Authors: Rojas Bustamante Juan Pablo
Published: May 2023

In this article we detail the patronage of the Limógenes and Godínez families in the works of the church, cloister, and fence of the San Esteban de Salamanca convent during the first third of the 14th century. The dating that we present explicitly corrects the wrong interpretation of the dates of the different documents, which for centuries were confused by historiography when calculating between the Hispanic era and the Christian era, compromising the known data of the previous temple to the current one. Likewise, we reconstruct the devotional topography of the old Dominican church from the family pantheon promoted by the lineages.
Las restauraciones de Isidoro Brun y Aguilar (1819-1898) sobre algunos lienzos de la colección pictórica de los Duques de Medinaceli: Juan de Alfaro y Luca Giordano.
Authors: Romero Medina Raúl
Published: May 2023

This papers offers an unpublished news about the presence of the restorer Isidoro Brun y Aguilar (1819-1898) in the collection of the Dukes of Medinaceli. Specifically, in 1859 he received payments for restorations (lining, cleaning and varnishing) on important paintings from the old collection of this noble family. This information completes his presence as a restorer in other collections such as those of the Dukes of Osuna
Castillos en el horizonte. Conservación y restauración durante el franquismo
Authors: Almarcha Núnez-Herrador María Esther , Villena Espinosa Rafael
Published: May 2023

After centuries of abandonment, some Spanish castles attracted interest due to their restoration in the context of the 19th century Romanticism. The 20th century gave them a certain legislative protection, but during Franco's regime these fortresses acquired a special symbolic value that linked them to the ultra-nationalist discourse of the dictatorship. It was not only symbolic, but also had an important economic value as they were linked to the country's tourist boom in the 1960s, both in terms of their visual and landscaping value, as well as their conversion into hotel facilities. To this end, it was necessary to undertake their restoration, which sometimes required deep transformations of the architectural space.

This research approaches these issues from a multidisciplinary perspective -thanks to archival, photographic, newspaper and textual sources- based on a proposal of significant sampling in Castilla-La Mancha.
Cambios en las prácticas funerarias prehispánicas en el altiplano Cundiboyacense (centro de Colombia) desde el periodo Precerámico al Muisca Tardío. Un análisis exploratorio
Authors: Argüello García Pedro María
Published: May 2023

Este estudio analiza una muestra de 114 tumbas con datación confiable procedentes del altiplano Cundiboyacense, centro de Colombia. Su objetivo es explorar los condicionantes de las prácticas mortuorias inferidos a través de los patrones del registro arqueológico, su variación regional y sus cambios a través del tiempo (desde el periodo Precerámico al Muisca Tardío). Dicha exploración se realiza a partir de un grupo de variables que pueden informar respecto a las condiciones sociopolíticas y las creencias religiosas. Se demuestra que entre las variables que dan cuenta de las diferencias socio-políticas, la inversión de energía es la que mejor informa sobre la débil diferenciación social al interior de esta región. Por el contrario, variables como la orientación del cuerpo y forma de la tumba indicarían un alto grado de diversidad religiosa. En conjunto, este estudio contribuye a sustentar la idea según la cual los grupos indígenas que habitaron el altiplano Cundiboyacense fueron mucho más diversos de lo que tradicionalmente se asumía, a la vez que aporta profundidad cronológica a la comprensión del origen de dicha diversidad.
La educación indígena y la memoria en Nueva España en el siglo XVI
Authors: Cuesta Hernández Javier
Published: May 2023

Si hay dos elementos del mundo indígena en la Nueva España del siglo xvi que no pueden disociarse son, sin duda, la educación y la memoria. Efectivamente, la primera presuponía la segunda, pero al mismo tiempo la exigía, la conformaba y la “redibujaba”, creando nuevos sujetos sociales para la monarquía hispana. La educación constituía la ocasión ideal para sancionar el orden establecido, así como para establecer una serie de enseñanzas morales en torno a los indígenas en ese mundo del primer contacto. El “funcionamiento” de ambos factores irá de la mano de una serie de elementos adicionales (las artes mecánicas y liberales en la educación, el papel del ars memorativa, los lugares de la educación, las personas y los medios en ella implicados), que estudiaremos en este texto.
Nostalgia por un pasado idealizado: la producción de café y la identidad nacional en Orosi, Costa Rica
Authors: Fischer Kate
Published: May 2023

En el tiempo de la neoliberalización del Estado de bienestar, los habitantes de Orosi, Costa Rica, expresan un deseo aparentemente contradictorio de regresar a un pasado cafetalero más sencillo, a la vez que desprecian la producción contemporánea. Analizo esas contradicciones partiendo de la noción de Richard Price de “tarjeta postal:” así como las postales, los oroseños recuerdan una versión idealizada de su pasado, lo que extirpa las dificultades en sus intentos por darle sentido a un presente incierto. Esta visión nostálgica ha dificultado que respondan a los cambios socioeconómicos y, como resultado de ello, se culpa a los jóvenes por los fracasos estructurales de la sociedad.
Estilos de vida en millennials.
Authors: Varón Rojas Diego , Daza Escobar Carolina
Published: May 2023

Este artículo de investigación se propone analizar los estilos de vida de jóvenes consumidores del sector gastronómico, que tiene entre 18 y 30 años, en dos de las áreas más representativas de la ciudad de Cali – Colombia. El análisis, se apoyó en la argumentación teórica sobre entorno cultural propuesta por el humanista vallecaucano Fernando Cruz Kronfly, en dialogo con autores representativos del mercadeo. Metodológicamente se apoyó en observación participante y entrevistas en profundidad realizada a diversos actores sociales, principalmente a jóvenes. Con los datos recogidos, se hizo necesario dividir a los millennials en tres categorías. Con el aumento de edad, los gustos van cambiando, lo particular es que ciertos elementos identitarios se conservan.
Kombination von digitalen Zwillingen und KI
Authors: Enes Kristina , Stern Oliver , Breuers Stefan , Balzer Jonathan , Roßmann Jürgen
Published: May 2023

Um kleine Losgrößen robotergestützt wirtschaftlich zu fertigen, müssen die entsprechenden  Steuerungsprogramme aufwandsarm anpassbar sein. Eine  besondere Herausforderung ist dabei die Umstellung  optischer Sensoren zur autonomen Erkennung und Lagebestimmung von Werkstücken, weil die  eingesetzten Algorithmen meist auf bestimmte Objekt- und  Umwelteigenschaften zugeschnitten sind. Ein  Lösungsansatz besteht in der Kombination von Digitalen  Zwillingen mit Methoden der Künstlichen Intelligenz in  einem cyber-physischen System, um neue Produkte  automatisch zu identifizieren, ihre Lage zu bestimmen und die Roboterprogramme anzupassen.
İngilizce Öğretmenlerinin Mesleki Adanmışlıklarına ve Bağlılıklarına İlişkin Görüşlerinin İncelenmesi
Authors: ÜNSAL Serkan , TUĞ Fatma , SALİHOGLU Neslihan Cansu
Published: May 2023

Bu araştırmanın amacı İngilizce öğretmenlerinin mesleki adanmışlıklarına ve bağlılıklarına yönelik görüşlerini incelemektir. Çalışma nitel araştırma türlerinden olgu-bilim deseninde yürütülmüştür. Araştırmanın çalışma grubunu 2019-2020 eğitim-öğretim yılında Kahramanmaraş ilinde görev yapmakta olan 12 İngilizce öğretmeni oluşturmuştur. Araştırmada veriler yarı yapılandırılmış görüşme formu kullanılarak toplanmış, elde edilen veriler içerik analiziyle, analiz edilmiştir. Araştırma sonucunda İngilizce öğretmenlerinin mesleklerini fedakârlık ve sabır gerektiren, vicdani boyutu olan, insanların hayatına dokunan, toplumsal değerleri kazandıran, ebeveyn rolüne bürünülen bir meslek olarak algıladıkları görülmüştür. Mizaçlarına uygun olması, mesleği ve çocukları sevmeleri, kadınlara uygun olması ve maddi sebeplerden dolayı mesleği icra ettikleri; okul dışında öğrencilerle ilgilenerek, kişisel zamanlarından fedakârlık yaparak, ailelerini ihmal ederek meslekleri için fedakârlık yaptıkları belirlenmiştir. Öğrencilerin iyi yerlere gelmesi, gelişim göstermesi, öğrenme isteklerinin olması, eski öğrencilerin vefası, öğretmenlerin öğretmeyi ve mesleklerini sevmeleri öğretmenlerin mesleğe bağlılıklarını artırdığı sonucuna ulaşılmıştır. Ayrıca araştırmada öğrencilerin tutum ve davranışları, akademik seviyelerinin düşüklüğü, eğitim sistemi, MEB’in olumsuz tutumu ile mesleğin statü ve saygınlığını düşmesi ve maaşların az olması, öğretmenlerin mesleğe olan bağlılıklarını azalttığı belirlenmiştir