bluuebunny/crossref_metadata_2025 huggingface dataset:
Responsabilidad social empresarial en el sector minero de Colombia
Authors: Malagón Jonathan Armando Bosigas , Camargo Jenny Edith Parada
Published: August 2021

El presente estudio tiene como propósito principal, la realización de un análisis de responsabilidad social empresarial en el sector minero en Colombia, a través del análisis juicioso de la realidad de casos empresariales del sector, en donde se evidencie la actualidad acerca de dicha temática. Las empresas estudiadas son: Cerrejón, Cerro Matoso, Drummond Company y Mineros S. A, se revisan las siete materias de la norma ISO 26000: Gobernanza, Derechos Humanos, Prácticas Laborales, Medio ambiente, Practicas justas de operación, Asuntos de los consumidores, Participación activa y desarrollo de la comunidad. Al final se concluye la enorme necesidad de seguir aplicando procesos de Responsabilidad Social Empresarial, sobre todo en estos países en donde observamos altos niveles de ilegalidad, corrupción, irrespeto al medio ambiente y múltiples conflictos de intereses.PALABRAS CLAVEResponsabilidad Social Empresarial, ISO, Sector Minero, Sostenibilidad,Stakeholders. ABSTRACTThis study’s main purpose, an analysis of corporate social responsibility in the mining sector in Colombia, through careful analysis of the reality of business cases sector, where is evidenced today about this topic. The companies studied are: Cerrejón, Cerro Matoso, Drummond Company and Mineros S. A, are reviewed seven areas of ISO 26000: Governance, Human Rights, Labor Practices, Environment, fair operating practices, consumer affairs, active participation and community development. Finally we conclude the enormous need for continuing CSR processes, especially in those countries where we observed high levels of illegality,corruption, disrespect for the environment and multiple conflicts of interest.KEY WORDSCorporate Social Responsibility, ISO, mining sector, sustainability, stakeholders.
Instructivo para autores
Authors: Empresarial Inquietud
Published: August 2021

La Revista Inquietud Empresarial es una publicación científica semestral editada por la Escuela de Administración de Empresas de la Facultad de Ciencias Económicas y Administrativas de la Universidad Pedagógica y Tecnológica de Colombia, sede Tunja. Está dirigida a docentes universitarios, investigadores, empresarios, funcionarios públicos y privados, estudiantes de pre y posgrado como espacio de expresión del pensamiento de las Ciencias de la Administración, Económicas,Contables y Políticas.
Costos ABC para producción convencional de tomate de árbol en el departamento de Boyacá.
Authors: Núñez Diana Astrid Buitrago
Published: August 2021

El tomate de árbol, como fruta promisoria de exportación, es un producto que tiene acceso solicitado por EEUU. De acuerdo con lo anterior, la presente investigación es de tipo explicativa y facilitará la estructuración de costos de producción de dicho producto, a los pequeños productores de tomate de árbol del departamento deBoyacá y como consecuencia la toma correcta de decisiones financieras, técnicas y administrativas para poder generar así utilidad y propiciar el manejo eficiente de los recursos (físicos, humanos y financieros). De acuerdo con las técnicas de recolección de datos e información en la primera etapa se socializaron y estandarizaron actividades, recursos y costos de las diferentes labores culturales para el cultivo de tomate de árbol, en la segunda etapa se realizó un revisión y análisis de la información consolidada y en la tercera fase se realizó el diseño delmétodo de Costeo por Actividades. La población escogida para la investigación son productores de tomate de árbol del departamento de Boyacá y la muestra fueron 19 productores del municipio de Buenavista dedicados a la producción de tomate de árbol, debido a que es el primer municipio productor de esta fruta del departamento de Boyacá.PALABRAS CLAVETomate de árbol, producción, costos, ABC, actividadesABSTRACTThe tree tomato, as promising export fruit is a product that accesses requested by USA. According to the above, this research is explanatory and -facilitate the structuring of production costs of this product, smallholders of tree tomato in Boyacá department and consequently in the correct financial, technical and administrative decisionmakingin the measures to attract and encourage the efficient use and management of resources (physical, human and financial) . According to the techniques of data collection and information in the first stage were socialized and standardized activities, resources and costs of different cultural practices for growing crops, in the second stage, we did a review and analysis of consolidated data, in the third stage we ended the design method of costing Activities . The population chosen for this research are the producers of tree tomato in the department of Boyaca and the sample were 19 producers in the municipality of Buenavista for the production of tree tomato, because it is the first municipality producer in this department.KEYWORDSTree tomato, production, costs, ABC, activities
El E-Comerce como un medio para aumentar la productividad en las microempresas.
Authors: Gómez Francisca Rosales , Alemán María Guadalupe Aguirre , Reyes Oreste Pimentel , Ventura Daniel Ortiz
Published: August 2021

En este estudio se presenta la influencia que tiene el E-Commerce para mejorar la Productividad en las empresas de Coatzacoalcos, Veracruz. A principios del año 2014 se efectuó una investigación de naturaleza exploratoria, correlacional y descriptiva en distintas microempresas de Coatzacoalcos, Veracruz, que utilizan el E-Commerce para mejorar su empresa. Por ello se le aplicó una encuesta referente a la forma en que su microempresa ha tenido su productividad. Los resultados obtenidos en la investigación indican que las empresas han comenzado a incursionar en el E-Commerce, siendo el 77% de los encuestados quienes han iniciado sus ventas electrónicas, el 82.9% ha llegado a incrementar sus ventas y el 60% tiene un plan de crecimiento. Por ello E-Commerce influencia la productividad de la microempresa al impulsar sus ventas.PALABRAS CLAVEE-Comerce, Productividad, microempresa, ventas ABSTRACT:This study presents the influence of the E-Commerce improve business productivity of Coatzacoalcos, Veracruz. In April 2014, an exploratory research was conducted correlational nature of different microenterprise Coatzacoalcos, Veracruz, using the E-Commerce enhance your business. We therefore applied a survey regarding the way your microenterprise has been productive. The results of the research indicatethat companies have begun to venture into e-commerce, with 77% of respondents who have started their online sales, reached 82.9% sales increase and 60% have a plan growth. Thus E-Commerce influences the productivity of microenterprises to boost their sales.KEYWORDSE-Commerce, Productivity, Microenterprise, Sales
Mecanismos de influencia en el consumidor infantil de Villavicencio
Authors: Gallego Esquivel Laura Catalina , Higuera Yehimi Carolina , Otero Gómez María Cristina , Pérez Wilson Giraldo
Published: August 2021

El presente artículo expone parte de los resultados de la investigación titulada“El consumo infantil del nivel socioeconómico medio de Villavicencio (Colombia)”. El objetivo consistió en identificar los mecanismos de influencia en la formación de preferencias de consumo de los niños entre 5 y 9 años de edad. Los hallazgos permitieron demostrar la existencia de varios agentes que inducen en la realizacióndel intercambio comercial como son: la familia y los adultos, los semejantes, la publicidad y la compra icónica. Adicionalmente se analiza el grado de influencia que representa la tecnología en este grupo etario. Dichos agentes han contribuido en la redefinición de los perfiles de este segmento, caracterizados por estar cada vez más informados y con autonomía para tomar decisiones a la hora de adquirir productos o de influir en las compras de quienes conforman su núcleo familiar ABSTRACTThis paper presents part of the results of the research entitled “The children’s consumption of middle socioeconomic level Villavicencio (Colombia)”. The aim was to identify the mechanisms of influence on consumer preference formation of children between 5 and 9 years old. The findings allow to establish the existence of various inducing agents in the conduct of trade as are the family and adults,alike, iconic advertising and shopping. Additionally, the degree of influence that represents technology in this age group is analyzed. Such agents have contributed to the redefinition of the profiles in this segment, characterized by being increasingly informed and autonomy to make decisions when purchasing products or to influence the purchases of those who make your householKEYWORDSConsumption, children, influence, advertising, marketing
Preliminares
Authors: Empresarial Inquietud
Published: August 2021

Los derechos de publicación de los artículos que aparecen en cada edición pertenecen ala Escuela de Administración de Empresas de la Universidad Pedagógica y Tecnológica deColombia. Se autoriza la reproducción y citación del material que contiene la revista, siemprey cuando se indique de manera explícita: nombre de la revista, nombre del (los) autor (es), año,volumen, número y páginas del artículo fuente. La mención de productos o firmas comercialesen la revista no implica una recomendación o apoyo por parte de la Universidad ni de laEscuela, el uso de tales productos debe ceñirse a las recomendaciones de las etiquetas.
La auditoría forense: un mecanismo para detectar el fraude de estados financieros en Colombia
Authors: Zambrano Vargas Yaneth
Published: August 2021

El papel de la auditoría forense, como mecanismo para detectar el fraude, ha cobrado cada vez más importancia en la obtención de pruebas que son utilizadas por los tribunales para impartir justicia. El contador forense es un profesional que hoy goza de buen prestigio, la sociedad encuentra en él un aliado contra la corrupción, pues previene, investiga, detecta y evalúa irregularidades ocurridas al interior de las organizaciones tanto públicas como privadas. En el desarrollo de presente trabajo se determinó la importancia de la auditoria forense como mecanismo efectivo en la detección de los fraudes financieros en Colombia, se identificaron las aplicaciones de esta labor en la obtención de pruebas útiles para impartir justicia, igualmente se verificaron las practicas más utilizadas por los perpetradores de este ilícito, aportando fundamentos en el conocimiento del auditor. Se revisa la normatividad aplicada para castigar los delitos por fraude en estados financieros, con el fin de sentar un precedente en la responsabilidad del contador público con la sociedad; por último, se muestran los casos representativos en los que este tipo de delito afecto seriamente el país y las sanciones impuesta a los defraudadores.
Encadenamiento productivo, estado actual del clúster automotriz en la región de San Luis Potosí
Authors: Cruz Covarrubias Lucila Patricia , Aguilar Pérez Pedro
Published: August 2021

En la actualidad, el encadenamiento productivo es una condición indispensable para el desarrollo económico local en el nuevo escenario global y competitivo. En San Luis Potosí empresas e instituciones públicas y privadas han desarrollado acciones de cooperación e interacción para la formación del clúster automotriz. El trabajo analiza y describe la acción de la cadena productiva, con el objetivo de examinar las características de la acción conjunta de estos sectores y el grado de consolidación del clúster. La investigación aborda un método cualitativo, se sustenta en la técnica de entrevista semiestructurada. Conclusiones importantes encontradas son: en la región potosina encontramos un clúster automotriz en formación. Tanto la cadena productiva como las instituciones de apoyo al clúster requieren ser fortalecidas.
Estudio ergonómico como parte de la responsabilidad social en trabajadores del centro regional de informática de la Universidad Veracruzana
Authors: Martínez Moreno Patricia , Aguirre Alemán María Guadalupe , González José Wilfran Donaldo
Published: August 2021

El objetivo de aplicar la Responsabilidad Social Empresarial (RSE) en las Organizaciones es el intento del fomento de la competitividad de las empresas con el aumento de la cohesión social, de la solidaridad y el respeto al trabajador. Cabe señalar que no se tiene una definición única de Responsabilidad Social Empresarial, pero se han desarrollado directrices a nivel internacional como la Organización para la Cooperación y el Desarrollo Económicos (OCDE) y Global Compact, quienes dictaron las primeras líneas directrices para empresas multinacionales. Este trabajo de investigación se centra específicamente en la directriz relación laboral, desde una perspectiva de cuidar y procurar por la salud, a partir del uso de un instrumento aplicado a los trabajadores. Como producto de esta investigación se presentaron recomendaciones y por supuesto se sugirieron algunas acciones preventivas que servirán en el futuro, sin dejar de lado que periódicamente el trabajador debe ser evaluado por mínimo que sea los riesgos en su área de trabajo.
Implicación de la confianza en la sostenibilidad empresarial
Authors: Díaz Cáceres Nelson , Lozano Correa Luz Janeth , Castaño Quintero Carlos Andrés
Published: August 2021

En este artículo de reflexión que pretende analizar las variables que pueden influir en la confianza en organizaciones sostenibles. Para desarrollar el trabajo se aplicaron estrategias cualitativas, tomando como punto de partida estudios y marcos conceptuales previos realizados. Entre los estudios previos se investigaron temas como liderazgo, transparencia, tipos de confianza, construcción de confianza, sostenibilidad, entre otros.A partir del estudio se profundiza la manera como, a partir de diferentes factores, generadores de confianza o de sostenibilidad, se puede identificar, crear, medir, y cuantificar índices de confianza dentro de las organizaciones. Así mismo, teniendo en cuenta estas mismas variables, se evalúa la relación entre la confianza y el desempeño organizacional por medio del análisis del recurso humano como un elemento de coordinación en la ejecución de las diversas tareas de la organización.
Mexican local suppliers in home appliance value chains
Authors: Moreno Oscar Velarde , Blanco Jímenez Monica , Guerra Moya Sergio Armando
Published: August 2021

This research aims to determine the factors influencing local supplier development by multinational subsidiaries in emerging countries like México. A quantitative regression methodology is employed using survey data collected from sourcing managers for a case-study focused on Mexico’s home appliance value chain. Although the extant literature suggests that a variety of factors influence local supplier development, only three factors were significant in this context: firm size, degree of autonomy, and technological capabilities. The applied research was conducted in the north of Mexico, where more than 50% of the domestic electrical products are produced; as such, the results generated herein could be reasonably representative of countrywide trends and phenomena. The context and results of this study could be useful to multinational companies in other emerging countries as they pursue development strategies vis-à-vis their local suppliers. Due to the scarcity of studies in México on value chains regarding local supplier development, the research presented here adds important knowledge on this topic.
Keywords: Supplier Development, Value Chain, Household Appliances, Multinational companies, autonomy of the firm.
JEL Code: F23, F63
Received: 29/05/2019. Accepted: 10/02/2020.  Published: 27/04/2020
The effect of the presence tutorials in the academic performance of the administration students of a university of the north of Mexico
Authors: Armenta Zazueta Lizeth , Quiroz Campas Celia Yaneth , Cota Valenzuela Laura Violeta
Published: August 2021

The purpose of the study was to identify the effect of the face-to-face tutoring program of undergraduate students in Administration on academic performance, as well as its level of student satisfaction with the program. The research questions were: (a) what are the aspects of the institutional tutoring program that impact on the academic performance of the students? (B) What is the satisfaction stage from the tutored about the tutoring institutional program attended? and (c) what effect does the institutional mentoring program have on the academic performance of administration students during their scholar journey? The methodology used in this study was based on the quantitative approach, non-experimental with a transactional design. 63 eight semester students participated, and they attended the tutoring program. The Pearson correlation test was used for the aspects included in the tutoring program and the academic performance of the students. The results indicate that there is no significant relation between the aspects that the tutorial program covers and the academic performance, however, is a high rate student satisfaction with the tutoring program. In the results of Pearson´s correlation test between the aspects of the program and the general average, no significant relation was found in the aspects covered by the program. As a conclusion, the institutional tutoring program does not have a statistically significant relation in the students' academic performance, in contrast to student satisfaction, which was favorable to the tutoring program.

Key words: Effect, student, academic performance, satisfaction, tutor

Code JEL: I20, I21, I23

Received: 24/06/2019. Accepted: 10/02/2020.  Published: 27/04/2020
The Socioeconomic Impacts of the Covid-19 Pandemic on Forcibly Displaced Persons
Authors: Rohwerder Brigitte
Published: August 2021

Covid-19 and the response and mitigation efforts taken to contain the virus have triggered a global crisis impacting on all aspects of life. The impact of the Covid-19 pandemic for forcibly displaced persons (refugees, internally displaced persons and asylum seekers) extends beyond its health impacts and includes serious socioeconomic and protection impacts. This rapid review focuses on the available evidence of the socioeconomic impacts of the crisis on forcibly displaced persons, with a focus where possible and relevant on examples from countries of interest to the Covid Collective programme: Afghanistan, Bangladesh, Ghana, Iraq, Kenya, Malawi, Pakistan, Rwanda, South Sudan, Syria, Uganda, Yemen, Zambia and Zimbabwe.
A ‘Right to Nutrition’ in Zambia: Linking Rhetoric, Law and Practice
Authors: Harris Jody , Gibbons Sarah , Kaaba O’Brien , Hrynick Tabitha , Stirton Ruth
Published: August 2021

Zambians in all walks of life are affected by malnutrition, and working through human rights is one key way to address this injustice. Based on research aiming to understand how a ‘right to nutrition’ is perceived by different actors globally and in Zambia, this brief presents a clear framework for a rights-based approach to nutrition in Zambia. This framework identifies rhetorical, legal and practical functions of human rights, and offers a way to think through clearly how different actors might work on the different aspects of rights. Addressing these three aspects of a right to nutrition all together – instead of by very separate constituencies as happens now – is fundamental to a coherent rights-based approach to nutrition. This brief outlines which actors need to come together – from law and policy, activism and communities, across global, national and local levels – and suggests how to start. It lays out the Zambian policy, legal and practical environment as it stands, and suggests actions to move forward in each of these areas in ways that are consistent with the different aspects of rights. Through these steps, Zambia can become known as a hub of action on a right to nutrition, to join with others in using human rights to address the injustice of malnutrition.
Environmental Challenges of Digital Transformation in Developing Countries
Authors: Hicks Jacqueline
Published: August 2021

This rapid review synthesises the literature on the environmental risks of four different aspects of digital transformation in developing countries: ICT adoption, digitally-enabled energy efficiency, ride-hailing apps, and big data use. The overall message which runs throughout the diverse literatures and results is that it is not digital technologies that create environmental risks or opportunities, but how they are used. Efficiency gains derived from digital transformation may yet lead developing countries down existing unsustainable development paths if not accompanied by careful, context-dependent policy. For policy-makers seeking to mitigate environmental risks, this means putting the context of digital use at the centre of analysis rather than the technologies themselves. However, the research literature covers more specific aspects of digital transformation. In practice, this report defines digital transformation as: ICT adoption, digitally-enabled energy efficiency, ride-hailing apps, and big data use. These topics were chosen after an initial scoping review of available literature, and because they exemplify a range of the different types of potential digital effects. The literature on the environmental risks of digital transformation is huge and conflicting. This is problematic because it could be easy to cherry pick preferred research results. Several studies noted that there is less research on developing countries than developed countries, but the evidence base is still large. As an evidence review, this report focused on the academic literature, but there is also a large grey literature. Some of the literature has a gender aspect, not covered in this report.
Humanitarian Evidence Summary No.17
Authors: Kelly Luke
Published: August 2021

This is the 17th monthly Humanitarian Evidence Summary (HUMES) to signpost FCDO and other UK government departments to the latest relevant evidence and discourse on humanitarian action to inform and support their response. It is the result of 1 day of work per month and is not intended to be a comprehensive summary of available evidence on humanitarian action but aims to make original documents easily accessible to decision-makers that, if relevant to them, they could refer to before making decisions.
Rural Sanitation and Climate Change: Putting Ideas into Practice
Authors: Kohlitz Jeremy , Iyer Ruhil
Published: August 2021

Climate change is a growing concern that exposes and deepens existing inequities and vulnerabilities with sanitation and hygiene access, use and safe management of facilities. It will continue to challenge the expansion of rural sanitation and hygiene coverage, with climate impacts disproportionately affecting already disadvantaged and marginalised groups. This publication unpacks the reasons behind the limited progress towards addressing climate change in the sanitation and hygiene sector, explores its impacts on rural sanitation and hygiene practices and provides actionable ideas to integrate climate thinking into rural sanitation and hygiene programming.
Elite Agama dalam Pileg 2009-2014 : Analisis Terhadap Peran Pondok Pesantren Raudhatul Ulum Sakatiga
Authors: Sani Haikal
Published: August 2021

Tujuan penelitian ini adalah untuk mengetahui proses dan faktor-faktror yang membuat transformasinya dari tokoh agama menjadi politisi. Tempat penelitian ini adalah di Pondok Pesantren Raudhatul Ulum Sakatiga. Penelitian ini menggunakan Teknik pengumpulana data melalui wawancara langsung kepada ketiga narasumber. Penelitian ini menggunakan metode kualitatif. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa yang mempengaruhi para kiai di Pondok Pesantren Raudhatul Ulum Sakatiga untuk terjun kedunia politik karena mereka memiliki konep dakwah dalam kehidupan, karena Nabi Muhammad SAW menjadi panutan bagi seluruh ummat manusia dibumi ini, bukan hanya untuk merubah akhlak manusia dan untuk mengajak manusia masuk Islam, Nabi Muhammad SAW pun mengajarkan bagaimana berpolitik yang benar, bagaimana cara membuat kebijakan yang benar-benar untuk kemaslahatan ummat. Sehingga membuat mereka termotivasi untuk terjun kedunia politik, ditambah lagi bagi mereka jiakalu orang buta politik maka negara ini akan sama seperti negara yang ditimur tengah.
The uneven geography of knowledge in agriculture
Authors: Mesquita Fernando , Luna Ivette , Fraga Souza Roney
Published: August 2021

During the 2000s and 2010s, the growth in sugar and ethanol production stimulated the expansion of sugarcane in new regions of Brazil, reducing the concentration in the state of São Paulo. This paper aims to investigate whether the rise in sugarcane production in peripheral areas has led to the growth of knowledge capabilities. In order to consider regional asymmetries, the article uses the differentiated knowledge base (DKB) approach in association with regional innovation systems (RIS) and core-periphery relations. Data on formal employment and scientific research on the Central-South region are analyzed from 2003 to 2017. The results show that there are limits to the diffusion of sugarcane knowledge as an important part of knowledge production remains concentrated in the regions of early growth in São Paulo.
Combination of Infective Endocarditis and Covid-19 Infection in a Young Patient
Authors: Ponomareva E. Yu. , Kosheleva N. A.
Published: August 2021

Infective endocarditis of the native mitral valve with multiple cardioembolic cerebral infarctions and myocardial infarctions against the background of a severe new coronavirus infection caused an unfavorable outcome in a young woman. The reasons for this were both the late diagnosis of IE (untimely performance of transthoracic echocardiography) and the synergy of the pathogenetic mechanisms of two serious diseases, which was most clearly manifested in the development of hemorheological disorders, damage to the myocardium, lungs and brain.
Development of a laboratory and experimental installation for checking the reliability of a mathematical model and an information and technical method for preventing emergencies at landfills of solid household waste with technological liquidation energy-intensive equipment
Authors: Azarenko Olena , Mirnenko Volodymyr , Rashkevich Nina , Shevchenko Olga , Shevchenko Tatyana
Published: August 2021

The paper presents a developed laboratory setup that allows experimental studies of the influence of indicators of the physical state of landfill soil on the stability of slopes to shear, to check the reliability of the mathematical model and the information and technical method developed on its basis for preventing emergencies of the cascade type of propagation due to the displacement of landfill soil on a solid landfill household waste with technological liquidation energy-intensive equipment. The main elements of the developed installation are a rectangular experimental box with swivel and fixed parts, swivel and locking mechanisms, tabletop plates, a sprayer, and a tangential load system. As the main requirements for the installation, the possibility of conducting a series of experiments based on the use of landslide experimental blocks with a change in their humidity, density, temperature and angle of inclination of the base of the sliding surface, as well as mechanical characteristics - the angle of internal friction, specific adhesion of landfill soil. Carrying out research using a laboratory setup is based on the assumption that the transition of a landslide experimental block of landfill soil into a dynamic state is considered the onset of an emergency at the object level of distribution.

In the course of the work, a technique was developed for conducting experimental studies and processing observation results. The methodology includes the following procedures: establishment of initial and boundary conditions; preparation of a laboratory installation; conducting a series of experiments to determine the mechanical parameters and the shear angle of the experimental blocks, and a series of experiments to determine the indicators of moisture, temperature and density of landfill soil on the fact of the shift, taking into account the gradual increase in moisture; statistical processing to obtain a statistical sample of the values of the effective indicators of the physical state of landfill soil included in the confidence interval according to the classical statistical method - Student's t-test.
MULTIPLE DIRECTION INTERFERENCE SUPPRESSION BY UNIFORM LINEAR PHASED ARRAY SIDELOBE EFFICIENT CANCELLER
Authors: Romanuke Vadim
Published: August 2021

Background. For radar systems, the beam pattern of a uniform linear array (ULA) is synthesized to ensure signal selectivity by direction. A specific ULA sidelobe is cancelled by rescaling the beam weights. In particular, this is done by increasing the number of sensors and shortening the scanning step. However, a noticeable limitation is a loss of the transmitted power. Therefore, the problem is to optimally balance the number of sensors versus effective ULA sidelobe cancellation.

Objective. In order to ensure multiple direction interference suppression, the goal is to find an optimal number of ULA radar sensors for the beam pattern synthesis. The criterion is to determine such a minimum of these sensors at which mainlobes towards useful signal directions are evened as much as possible.

Methods. To achieve the said goal, the ULA sidelobe cancellation is simulated. The simulation is configured and carried out by using MATLAB® R2020b Phased Array System ToolboxTM functions based on an algorithm of the sidelobe cancellation.

Results. By increasing the number of ULA sensors, the beam pattern lobes are not only thinned but also change in their power. In particular, the interference direction sidelobes become relatively stronger. The number of sensors is limited by the three influencing factors: the thinned-array curse transmitted power loss, the aperture size, and the sidelobes intensification.

Conclusions. An optimal number of ULA radar sensors for the beam pattern synthesis can be found when the scanning step is equal to the least distance between adjacent interference directions. At the start, the number of sensors is set at the number of useful signal directions. If the mainlobes towards useful signal directions are not evened enough, the set of interference directions is corrected.

Keywords: radar phased array; beam pattern; interference direction; sidelobe cancellation; aperture size.
METHOD OF TRANSMITTING INFORMATION ON THE INTERNET OF THINGS
Authors: Mikhnenko Yaroslav , Skulysh Mariia , Kurdecha Vasil , Mikhnenko Galyna
Published: August 2021

Background. The IoT technology covers devices and appliances, such as thermostats, home security systems and cameras, lighting fixtures as well as other household appliances that support one or more shared ecosystems, and can be controlled by devices associated with that ecosystem, for example with smartphones and smart speakers. However, there are a lot of problems to be solved. One of these problems is the power supply of wireless sensors on the Internet of Things.

Objective. The purpose of the study is to reduce energy consumption of IoT devices in the process of transmitting the collected data by regulating the number of transmission transactions.

Methods. The analysis of the existing energy saving methods in IoT devices shows that the problem of choosing the optimal buffer size has not yet been solved. An optimization problem has been formulated, which allows considering the requirements for the quality of transmission of both information flows and communication systems that provide this transfer.

Results. The article presents the modified method of information transmission to improve the energy efficiency of the network. The need to allocate a queue buffer at each of the nodes and explain the operation of the node using the queue buffer has been highlighted. The scheme of the project with the use of the modified Sleep / Wake algorithm has been created.

Conclusions. The main idea of the method is to allocate a buffer at each node with a certain threshold value, and if the latter is exceeded, the transmission of information packets will begin. This increases the service life of WSN by 14.8… 20.6% compared to the IoT sensor networks that use an asynchronous queue cycle.

Keywords: IoT; energy efficiency; life expectancy of the IoT network.
MUTUAL COUPLING COEFFICIENTS OF ROTATING RECTANGULAR DIELECTRIC RESONATORS IN CUT-OFF RECTANGULAR WAVEGUIDE
Authors: Trubin Alexander
Published: August 2021

Background. A further increase in the speed of information transfer is determined by more stringent requirements for the elements of communication devices. One of the most important components of such devices is various filters, which are often made on the basis of dielectric resonators. Calculation of the parameters of multi-section filters is impossible without further development of the theory of their design. The development of filter theory is based on electrodynamic modelling, which involves calculating the coupling coefficients of dielectric resonators in various transmission lines.

Objective. The aim of the research is to calculate and study the coupling coefficients of rectangular dielectric resonators with a rectangular metal waveguide when their axes rotate. Investigation of new effects to improve the performance of filters and other devices based on them.

Methods. Methods of technical electrodynamics are used to calculate and analyse the coupling coefficients. The end result is to obtain new analytical formulas for new structures with rectangular dielectric resonators, which make it possible to analyse and calculate their coupling coefficients.

Results. New analytical expressions are found for the coupling coefficients of dielectric resonators with the rotation of their axes in a rectangular waveguide.

Conclusions. The theory of designing filters based on new structures of dielectric resonators with rotation of their axes in metal waveguides has been expanded. New analytical relationships and new patterns of change in the coupling coefficients are found.

Keywords: dielectric filter; rectangular dielectric resonator; rotation; coupling coefficients.
INVESTIGATION OF A MILLIMETER-WAVE RADIO LINK CHARACTERISTICS OF IEEE 802.11AD STANDARD IN URBAN AREAS
Authors: Kravchuk Serhii , Afanasieva Liana , Kravchuk Irina
Published: August 2021

Background. The explosive growth in the use of mobile broadband is significantly increasing the bandwidth requirements. Millimeter-wave spectrum is necessary for 5G networks to achieve data transfer rates of the order of Gb/s, in particular, for the provision of 3D video services, and the use radio modules for millimeter-wave frequencies as picocells in the streets will expand the capabilities of existing cellular networks and provide an increase in bandwidth. Therefore, the study of the characteristics of this spectrum is an urgent task today.
Objective. The purpose of the paper is to present the results of studying the characteristics of a millimeter-wave radio link to ensure high-speed user access to IP data transmission networks and the possibility of using the IEEE 802.11ad standard in open areas.
Methods. Structural and functional methods of constructing a millimeter-wave wireless network in urban areas based on IEEE 802.11ad standard hardware are investigated.
Results. The studies were carried out using a test bench with a point-to-point topology deployed in an urban environment (Kiev) with the line of sight without significant obstacles. The studies tested the possibility of using for millimeter-wave hardware technologies of the IEEE 802.11ad standard, which is used indoors, for applications in urban areas.
The use of a narrow beam antenna based on an antenna array allows adaptive control of the radiation pattern to bypass small obstacles blocking direct transmission, which allows reducing interference and receive/transmit a signal.
Conclusions. Experimental testing of the hardware capabilities of the IEEE 802.11ad standard has been carried out. Scenarios for constructing a millimeter-wave radio link under various weather conditions have been worked out.
Keywords: millimeter-wave; bandwidth; IEEE 802.11ad standard; 5G networks
ANALYSIS OF TELECOMMUNICATION CHANNEL SPECTRAL CHARACTERISTICS WITH BLOCK CODING AT A CONSTANT SPEED OF THE MESSAGE SOURCE
Authors: Uryvsky Leonid , Korniienko Andriy , Shmigel Bohdan
Published: August 2021

Background. The direction of development of modern electronic communication systems tends to increase the speed of information transmission. In turn, increasing the speed requires the use of additional resources of the communication channel and tools to maintain the specified reliability of the transmission under limited conditions. But resources are not free. That is why there is a need to establish a relationship between the conditions for reliable transmission in high-speed channels and the spectral and energy parameters of the information transmission system.

Objective. The purpose of the paper is to analyse and describe the effect of block noise-tolerant coding on the rate of transmission of symbols in the communication channel while ensuring the required reliability of information transmission at a constant speed of the message source by increasing the frequency involved.

Methods. The initial stage of the study is the presentation of system parameters in case of inaccurate transmission. Then a block redundant code is synthesized, which ensures the reliability of information transmission and the procedure of spreading the spectrum at a fixed speed of the message source is performed.

Results. Recommendations on the method of selecting coding parameters in the procedure of spreading the spectrum and provided that the speed of the message source is constant are formed.

Conclusions. Analysis of the possibilities of noise-tolerant coding at different energies of the communication channel under conditions of increasing the channel transmission rate at a fixed speed of the message source.

Keywords: speed; message source; reliability; noise immunity.
APPLICATION OF THE ROBUST APPROACH TO INCREASE THE ACCURACY OF DETERMINING THE COORDINATES OF THE ELEMENTS OF WIRELESS SENSOR NETWORKS
Authors: Yakornov Evgeniy , Tsukanov Oleg
Published: August 2021

Background. Modern methods for determining the coordinates of elements of wireless sensor networks allow solving the problems of determining the mutual distances between the elements of a wireless network under the assumption that the errors in measuring the mutual distances between network elements are distributed according to the normal law. With increasing requirements for the accuracy of determining coordinates, these methods do not allow solving the problem.
Objective. The purpose of the paper is to improve the accuracy of determining the coordinates of elements of wireless sensor networks by using robust estimation methods.
Methods. Determination of coordinates of elements of wireless sensor networks is implemented on the basis of two robust methods.
The first is the use of a median estimate based on multiple measurements of the mutual distances between elements to determine their coordinates.
The second is based on multiple measurements of the mutual distances between elements, determining their coordinates based on the Huber influence function and comparing two robust methods.
Results. The use of a robust method based on the Huber influence function makes it possible to increase the accuracy of determining the coordinates of elements of wireless sensor networks by 5-10% compared to classical estimation methods.
Conclusions. The proposed robust approach to determining the coordinates of elements of wireless sensor networks can be implemented in modern ground-based sensor networks for various purposes.
Keywords: wireless sensor network; determination of coordinates of elements of wireless sensor networks; robust estimation methods.
Remaining Useful Life Prediction from 3D Scan Data with Genetically Optimized Convolutional Neural Networks
Authors: Diraco Giovanni , Siciliano Pietro , Leone Alessandro
Published: August 2021

In the current industrial landscape, increasingly pervaded by technological innovations, the adoption of optimized strategies for asset management is becoming a critical key success factor. Among the various strategies available, the “Prognostics and Health Management” strategy is able to support maintenance management decisions more accurately, through continuous monitoring of equipment health and “Remaining Useful Life” forecasting. In the present study, Convolutional Neural Network-based Deep Neural Network techniques are investigated for the Remaining Useful Life prediction of a punch tool, whose degradation is caused by working surface deformations during the machining process. Surface deformation is determined using a 3D scanning sensor capable of returning point clouds with micrometric accuracy during the operation of the punching machine, avoiding both downtime and human intervention. The 3D point clouds thus obtained are transformed into bidimensional image-type maps, i.e., maps of depths and normal vectors, to fully exploit the potential of convolutional neural networks for extracting features. Such maps are then processed by comparing 15 genetically optimized architectures with the transfer learning of 19 pre-trained models, using a classic machine learning approach, i.e., Support Vector Regression, as a benchmark. The achieved results clearly show that, in this specific case, optimized architectures provide performance far superior (MAPE=0.058) to that of transfer learning which, instead, remains at a lower or slightly higher level (MAPE=0.416) than Support Vector Regression (MAPE=0.857).
Numerical and Experimental Assessment of the Effect of Residual Stresses on the Fatigue Strength of an Aircraft Blade
Authors: Bednarz Arkadiusz , Misiolek Wojciech Z.
Published: August 2021

The work presents the results of numerical fatigue analysis of a turbine engine compressor blade, taking into account the values of initial stresses resulting from surface treatment - shot-peening. The values of the residual stresses were estimated experimentally using X-ray diffraction. The paper specifies the values of the residual stresses on both sides of the blade and their reduction due to the cutting through the blade - relaxation. The obtained values of the residual stresses were used as initial stresses in the numerical fatigue analysis of the damaged compressor blade, which is subjected to resonant vibrations of known amplitude. Numerical fatigue ε-N life analysis was based on the several fatigue material models: Manson’s, Mitchell’s, Baumel-Seeger’s, Muralidharan-Manson’s, Ong’s, Roessle-Fatemi’s and Median’s, and also on the three models of cyclic hardening: Manson’s, Xianxin’s, and Fatemi’s. Because of this approach, it was possible to determine the relationship between the selection of the fatigue material ε-N model and the cyclic hardening model on the results of the numerical fatigue analysis. Additionally, the calculated results were compared with the results of experimental research, which allowed for a substantive evaluation of the obtained results. These results are of great scientific and practical importance. The problem of determining the fatigue life of blades with defects operating under resonance vibrations is one of the original tasks in the field of fracture mechanics and experimental mechanics. The results obtained are of great importance in the aviation industry and can be used during engine maintenance and inspections to assess the suitability of blades with defects in terms of the needs of further work. This aspect of engineering maintenance is of great importance from the aircraft safety point of view.
Sigara, Alkol ve Kahve Tüketiminde Tüketici Davranışı
Authors: OZDEMİR Sebnem , IŞIK Kasım Can
Published: August 2021

Bu çalışmanın amacı tüketicilerin sigara, alkol ve markalı kahve zincirlerinden kahve tüketiminin hem demografik parametrelere göre değişimini hem de tüketici davranışları kapsamında sıklıkla incelenen Hedonik Tüketim, Faydacı Tüketim, Plansız Satın Alma ve Gösterişçi Tüketim ile arasındaki ilişkiyi belirlemektir. Anket tekniği ile elde edilen verilerin değerlendirilmesinde tanımlayıcı ve açıklayıcı istatistiksel tekniklerin yanı sıra, çarpıklık ve basıklık testi (Skewness ve Kurtosis), Spearman korelasyon testi, t testi, Anova (F) testi ve LSD çoklu karşılaştırma testleri SPSS 25 programı aracılığıyla kullanılmıştır. Faydacı tüketim ile yaş arasında pozitif yönlü, eğitim durumu arasında ise negatif yönlü; gösterişçi tüketimle kişisel gelir durum ve aile gelir durumu arasında pozitif yönlü; sigara kullanım sıklığı ve yaş arasında pozitif yönlü, eğitim durumu arasında ise negatif yönlü bir korelasyon çıkmıştır. Markalı kahve zincirlerinden kahve kullanım sıklığıyla yaş arasında negatif yönlü, eğitim durumu ve toplam aile geliri arasında ise pozitif yönlü; alkol kullanım sıklığı ile kişisel gelir ve toplam aile geliri arasında pozitif yönlü bir korelasyon çıkmıştır. Kadınların hedonik tüketimleri erkeklerden fazla çıkmıştır. Sigara içme sıklığına göre hedonik tüketim, faydacı tüketim ve gösterişçi tüketimin değiştiği, markalı kahve zincirlerinden kahve içme sıklığına göre bütün tüketim faktörlerinin değişim gösterdiği saptanmıştır. Alkol içme sıklığına göre faydacı tüketimin de değişim gösterdiği tespit edilmiştir.
Los espacios verdes públicos y su influencia en la calidad de vida urbana en el distrito de Lurín, 2020
Authors:   , Flores Aspiros Katia Lissette , García Tepo Fiorella Elizabeth , Irigoin Soto Yoel , Taype Castro Carlos Alfredo
Published: August 2021

El presente artículo analiza los espacios verdes públicos existentes y su influencia en la calidad de vida de sus habitantes en el distrito de Lurín, puesto que se conoce que carece de estos espacios, contando en la actualidad con solo 1.12(m2/ha). Según los estudios realizados anteriormente se sabe que la calidad de vida tiene una relación directa con los espacios verdes públicos, ya que es ahí donde los habitantes se relacionan causando una interacción social, la cual viene siendo afectada por el rápido crecimiento y desarrollo de las ciudades. Por ello, este estudio busca definir la brecha de información a base del efecto que produce el déficit de las áreas verdes públicas y su vínculo con la salud urbana. con la finalidad de decretar su efecto como indicador de calidad de vida urbana. Por lo tanto, el objetivo de esta investigación es identificar la influencia que generan los espacios públicos verdes existentes del distrito, ante la calidad de vida que presentan sus habitantes. La metodología utilizada es de carácter descriptivo, se recoge la información por medio de encuestas realizadas a los vecinos de la zona, para identificar su opinión e influencia de los espacios públicos en su estilo de vida diario, además de la recolección de información de diferentes fuentes como artículos, investigaciones, etc.
Watchmen em português: quem vigia os tradutores?
Authors: Serpa Talita , Carmona Erika Leticia
Published: August 2021

Este trabalho tem como objetivo observar os quatro aspectos apontados por Zanettin (2008) no tocante à tradução de quadrinhos, ou seja, formato, público-alvo, nomes e relação intersemiótica dentro da graphic novel Watchmen, de Alan Moore e Dave Gibbons publicada pela DC Comics (1986) e em duas de suas traduções para o português realizadas por Jotapê Martins, bem como por Hélcio Carvalho e publicadas pela Abril (1999) e pela Panini (2009), respectivamente. Focamos, além disso, em conceituações advindas de leituras como as de Cirne (1990), Eisner (1995), Landers (2001) e Celotti (2008), a fim de ampliar os saberes sobre tradução de quadrinhos e destacar distinções a serem consideradas dentro do processo de tradução. Notamos, com isso, que as versões brasileiras apresentam escolhas diversas para os aspectos pontuados na obra de Zanettin, como é o caso do nomes das personagens, para os quais se percebe que não existe um padrão entre as traduções, pois ora assume-se a decisão de traduzir os nomes, ora de mantê-los como o original, por exemplo, em Night Owl (Coruja Noturna), Comedian (Comediante) e Twilight Lady (Dama do Crepúsculo); e em Rorschach, Ozymandias e Dr.Manhattan.