bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of full-size panel width on cutting yield of wood-based composites as upholstery furniture frame stocks
Authors: Konukcu Arif Caglar , Zhang Jilei
Published: February 2021

In the competitive market, many furniture manufacturers are improving their process efficiency, eliminating unnecessary costs, and improving quality by using wood-based composite panels in frames. Currently, upholstery furniture frames are made by using over 70% wood-based composite panels, which causes material utilization to be the most important area of improvement. Many furniture manufacturers have realized that increased design and production efficiencies using wood-based panel products as their frame stocks combined with computer numerical control (CNC) technology is beneficial for the manufacturing process. However, manufacturers are continuously looking for alternatives to improve the bottom line of the manufacturing process, which includes optimization of the assumed panel width to maximize the cutting yield. In this case study, the effects of increasing the width of full-size wood-based composite panel products (1219-mm-wide × 2438-mm-long) on the cutting yield of parts for two upholstered frame models were investigated using computer simulation software with an optimization capacity. The results of the simulation indicated that increasing the width of the full-size wood-based composite panel products to 1371 mm and 1524 mm could yield better material cutting yields compared with the 1219-mm-wide panel products.
Solid-state fermentation process for gibberellin production using enzymatic hydrolysate corn stalks
Authors: Bai Jing , Liu Fengli , Li Siqi , Li Pan , Chang Chun , Fang Shuqi
Published: February 2021

Solid-state fermentation was carried out for production of gibberellin via the addition of enzymatic hydrolysate from steam-exploded corn stalks during the culture period. The enzymatic hydrolysate from the steam-exploded corn stalks was added to the culture medium during the solid-state fermentation period, which improved gibberellin production. When the enzymatic hydrolysate was added into the 400 mL/kg dry basis substrate in the solid-state fermentation after 60 h, the temperature was 30 °C, the pH was 7.00, the mass ratio of solid to liquid was 1:1.1, and the fermentation period was 168 h. This led to the largest gibberellin yield (9.48 g/kg dry basis), and when compared with pre-optimization, the gibberellin yield increased by 135%. The optimum conditions to maximize the biomass for the fermentation process were obtained; the temperature was 32 °C for a gibberellin yield of 9.20 g/kg dry basis, the pH was 6.00 and the mass ratio of solid to liquid was 1:1.1 for a gibberellin yield of 9.48 g/kg dry basis, and the fermentation period was 96 h for a gibberellin yield of 6.94 g/kg dry basis. Therefore, a new alternative way for gibberellin production via solid-state fermentation has been demonstrated.
Modified geopolymer-based wood adhesive using waterborne polyurethane
Authors: Pan Dawei , Ye Hanzhou , Wang Xiaoqian , Zhang Yang
Published: February 2021

Geopolymer binders show great potential in the application of eco-friendly wood composite adhesives. The applicability of organic-inorganic hybrid-reinforced geopolymer composites as plywood binder was investigated. In this study, a geopolymer-based wood adhesive was fabricated by mixing a matrix-geopolymeric slurry; a toughening agent, waterborne polyurethane; and a silane coupling agent, that served as the covalent “bridge” between the waterborne polyurethane with a geopolymer matrix. The results showed that the waterborne polyurethane exhibited excellent compatibility with the geopolymer and served as a flexibilizer, which transformed the matrix from a microfractured structure to a denser morphology. Moreover, the shear strength of bonded plywood and the morphology of the fracture surface after the tensile measurement were measured. The resulting geopolymer/wood interface was well bonded, and the interfacial bonding strength was higher than the wood strength matrix after modification. The introduction of waterborne polyurethane and silane coupling agent improved the water resistance of the composites and increased the wet shear strength of plywood from 0 MPa to 0.35 MPa. Notably, a weak wood/alkali interface was formed under alkaline conditions due to the strong diffusion of alkali metal ions between the interfaces.
Logistic regression models of factors influencing the location of bioenergy and biofuels plants
Authors: Young Timothy M. , Zaretzki Russell L. , Perdue James H. , Guess Frank M. , Liu Xu
Published: February 2021

Logistic regression models were developed to identify significant factors that influence the location of existing wood-using bioenergy/biofuels plants and traditional wood-using facilities. Logistic models provided quantitative insight for variables influencing the location of woody biomass-using facilities. Availability of “thinnings to a basal area of 31.7m2/ha,” “availability of unused mill residues,” and “high density of railroad availability” had positive significant influences on the location of all wood-using faciities. “Median family income,” “population,” “low density of railroad availability,” and “harvesting costs for logging residues” had negative significant influences on the location of all wood-using faciities. For larger woody biomass-using mills (e.g., biopower) availability of “thinnings to a basal area of 79.2m2/ha,” “number of primary and secondary wood-using mills within an 128.8km haul distance,” and “amount of total mill residues,” had positive significant influences on the location of larger wood-using faciities. “Population” and “harvesting costs for logging residues” have negative significant influences on the location of larger wood-using faciities. Based on the logistic models, 25 locations were predicted for bioenergy or biofuels plants for a 13-state study region in the Southern United States.
Fermentable sugars from Lupinus rotundiflorus biomass by concentrated hydrochloric acid hydrolysis
Authors: Vargas Radillo J. Jesús , Ruiz-López Mario A. , Rodríguez Macías Ramón , Barrientos Ramírez Lucía , García-López Pedro M. , López-Dellamary Toral Fernando A.
Published: February 2021

It is of general interest to produce fermentable carbohydrates from plant biomass. However, obtaining monosaccharides requires some effort, due to the intricate structure of the cell wall lignocellulosic complex. The aim of this study was to apply a simple two-stage hydrolysis process, using only concentrated hydrochloric acid, to generate fermentable carbohydrates from L. rotundiflorus biomass. First and second stage acid concentrations were 32% and 42.6%. Total monosaccharide yields with respect to dry matter after the first stage, second stage, and the overall process, were 27.5%, 21.0% and 48.4%, respectively. Xylose was the main first stage carbohydrate in the hydrolysate, followed by glucose, arabinose, and galactose. After the second stage only glucose and a small amount of xylose were detected. The polysaccharide hydrolysis was eased by overall low lignin content. Some advantages of this method were the use of a single hydrolyzing agent and that most of the polysaccharides were hydrolyzed in reasonably high yields. The acceptable yield, relative simplicity, the use of most of the biomass along with the wide availability, low cost of the chemicals, and the ample supply of lupines, would facilitate the scaling of these laboratory studies to pilot and industrial levels.
Influence of heat transferring media on durability of thermally modified wood
Authors: Karlsson Olov , Sidorova Ekaterina , Morén Tom
Published: February 2021

Studies on the durability and dimensional stability of a series of hardwoods and softwoods after thermal modification in vegetable oils and in steam atmospheres have been performed. Mass loss after exposure to Coniophora puteana (BAM Ebw.15) for 16 weeks was very low for European birch, European aspen, Norway spruce, and Scots pine thermally modified in a linseed oil product with preservative (for 1 hour at 200 oC). Fairly low mass losses were obtained for wood thermally modified in linseed-, tung- and rapeseed oil, and losses were related to the wood species. Low mass loss during rot test was also found for Norway spruce and Scots pine modified in saturated steam at 180 oC. Water absorption of pine and aspen was reduced by the thermal treatments and the extent of reduction was dependent on wood species and thermal modification method. Thermally modified aspen was stable during cycling climate tests, whereas pine showed considerable cracking when modified under superheated steam conditions (Thermo D). At lower modification temperature (180 oC) an increase in mass after modification in rapeseed oil of spruce, aspen and sapwood as well as heartwood of pine was observed, whereas at high temperature (240 oC) a mass loss could be found. Oil absorption in room tempered oil after thermal modification in oil was high for the more permeable aspen and pine (sapwood).
End-of-Life Childhood Cancer Research: A Systematic Review
Authors: Hasan Fyeza , Widger Kimberley , Sung Lillian , Wheaton Laura
Published: February 2021

CONTEXT:

Children with incurable cancer may participate in research studies at the end of life (EOL). These studies create knowledge that can improve the care of future patients.

OBJECTIVE:

To describe stakeholder perspectives regarding research studies involving children with cancer at the EOL by conduct of a systematic review.

DATA SOURCES:

We used the following data sources: Ovid Medline, Embase, the Cumulative Index to Nursing and Allied Health Literature, PsycINFO, Web of Science, and ProQuest (inception until August 2020).

STUDY SELECTION:

We selected 24 articles published in English that examined perceptions or experiences of research participation for children with cancer at the EOL from the perspectives of children, parents, and health professionals (HPs).

DATA EXTRACTION:

Two authors independently extracted data, assessed study quality, and performed thematic analysis and synthesis.

RESULTS:

Eight themes were identified: (1) seeking control; (2) faith, hope, and uncertainty; (3) being a good parent; (4) helping others; (5) barriers and facilitators; (6) information and understanding; (7) the role of HPs in consent and beyond; and (8) involvement of the child in decision-making.

LIMITATIONS:

Study designs were heterogeneous. Only one study discussed palliative care research.

CONCLUSIONS:

Some families participate in EOL research seeking to gain control and sustain hope, despite uncertainty. Other families choose against research, prioritizing quality of life. Parents may perceive research participation as the role of a “good parent” and hope to help others. HPs have positive views of EOL research but fear that parents lack understanding of the purpose of studies and the likelihood of benefit. We identified barriers to research participation and informed consent.
Digital methods in researching Slovakia Hungarian regional dialects
Authors: Presinszky Károly
Published: February 2021

This study overviews the most recent digital methods used in Slovakia Hungarian dialectology. Slovakia Hungarian dialectology started out by using the most modern digital methods in 2010 at Nitra/Nyitra university, creating regional dialect databases, first for the Žitný ostrov/Csallóköz region and then for the whole Slovakia Hungarian dialect region. Recording and processing data has been carried out with the help of the Bihalbocs software developed by Domokos Vékás and Fruzsina Sára Vargha in Hungary. The present paper first provides an overview of digital methods in dialectology and its results for Hungarian dialects, and then summarizes the results of the Nitra/Nyitra team so far, illustrating the diversity of digitized dialectological data. It discusses the findings of publications reporting on the results of this research, including maps showing the geographical and social distribution of linguistic phenomena and acoustic phonetic analyses of data aligned with sound files. Important output of this research also includes recently published audiobooks of Slovakia Hungarian dialects. The paper outlines further avenues of research based on the most recent findings.
A comparative study of reading comprehension skills among Hungarian students in Hungary and Slovakia
Authors: Vančo Ildikó , Gergelyová Viktória
Published: February 2021

The present study aims to map the reading comprehension skills of the primary school students in Hungary and Slovakia and to see what differences there are in the reading habits, self-assessment and actual performance in reading comprehension between the two groups.

A total of 240 survey respondents from the two countries and belonging to two age groups participated in this phase of research. The survey consisted of two parts. The first part was a self-completed questionnaire consisting of 23 questions, in which the students' sociological background, language use, reading habits, and subjective opinions related to the assessment of reading comprehension skills were assessed. The second part was a reading comprehension test, which consisted of three sets of texts and questions adapted to the cognitive abilities of the two age groups.

An analysis of the answers shows that there is no significant difference between the self-evaluation of students in the two countries regarding their reading comprehension skills. There is however a difference between the reading habits of Hungarian students in Hungary vs. in Slovakia in both age groups, and a significant difference between the results of the reading comprehension test in the groups of students from the two countries.
GLOBALIZAÇÃO E EDUCAÇÃO: A INTEGRAÇÃO ENTRE A REDE FEDERAL DE EDUCAÇÃO PROFISSIONAL, CIENTÍFICA E TECNOLÓGICA E OS PROCESSOS MIGRATÓRIOS NO BRASIL NO SÉCULO XXI
Authors: Silva Rayna Sargem da , Azevedo Jefferson Manhães de
Published: February 2021

Este artigo visa analisar os caminhos pelos quais a Rede Federal de Educação Profissional, Científica e Tecnológica tem se organizado frente às necessidades geradas pelos processos migratórios no país, no século XXI. Segundo as garantias asseguradas aos migrantes na Lei da Migração, Lei Nº 13.445, de 24 de maio de 2017, questiona-se se as condições de ensino e de trabalho aos migrantes no Brasil acompanharam tal crescimento. Nesse cenário, aponta-se a Rede Federal de Educação Profissional, Científica e Tecnológica como uma possível estratégia de política pública para a inserção qualificada dos migrantes e refugiados no mundo do trabalho.
Rodzina współczesna w kręgu opresyjnych wzorów społeczeństwa liberalnego
Authors: Kocik Lucjan
Published: February 2021

Postmodernism and global­ization results has changed contempo­rary meanings of marriage and fam­ily. This situation is based on the lev­el of ”political correctness” and strikes against the strong values of religion and contemporary family system. This cause many disharmonious situation in differ­ent branches of family functions.
Współczesne modele alternatywne wobec rodziny tradycyjnej
Authors: Belcer Agnieszka Małgorzata
Published: February 2021

The contemporary mod­el of family significantly differs from that which still prevailed 30 years ago. Civilization ­related changes worldwide, introduction of free ­market economy in Poland, and the rapid changes of the most recent years resulted in a transition from the traditional nuclear family to­wards various alternative models where­by the frames of the concept of “family” have been expanded. The subject inves­tigated by the article includes the tradi­tional family and alternative family mod­els: families based on partnership, recon­stituted family, cohabitation ­based rela­tionships and same ­sex families.
Pułapka współuzależnienia w rodzinie z problemem alkoholowym
Authors: Błaszczuk Katarzyna
Published: February 2021

A family faced with alcohol de­pendence of its member most often does not take any action to solve the problem. This is mainly due to the lack of knowl­edge about co ­dependency of all people living under one roof with the addict. The spouse/partner as well as children of the addicted individual feel shame as they are blamed by the person abusing alcohol for the situation, and that hin­ders or cripples any attempts to solve the problem. Times of drinking and associat­ed fighting, aggression and violence are interspersed with “honeymoon ­like pe­riods”, so family members are convinced that one day the addiction will end and “things will somehow turn out right”. It is not only the drinking person but also his/her closest relatives who deny there is a problem if the fact is pointed out and confirmed by anyone outside the family. Despite the suffering and damage caused by the lack of the drinking person’s con­cern for his/her family as well as his/her absence and disengagement from the daily routines, the spouse/partner and the children put on “masks” and claim there is no problem. The greatest trag­edy of children living in a family with a drinking problem is the fact that, with­out being aware of it, they continue to play the same roles in their adult life, as ACA. An addicted person may de­cide to stop drinking only if they admit full responsibility for the effects of their own lack of control over drinking which leads to significant damage on a person­al and family level, exposing everyone to suffering and harm. Of great impor­tance in motivating an alcoholic to re­main sober is a short family intervention during a meeting in a group of people significant for the addict. The essence of co ­dependency may be explained using a case study showing the attempts made by a wife trying to justify behaviours of her husband who abuses alcohol.
Trudności w realizacji ról rodzicielskich rodziców dzieci z niepełnosprawnością intelektualną
Authors: Tomczyszyn Dorota
Published: February 2021

The paper presents the results of research on difficulties in realization of parental roles of parents of children with intellectual disabilities. The au­thor has surveyed 222 parents of chil­dren with intellectual disabilities, includ­ing 111 mothers and 111 fathers. The re­search was completed in 2013 and 2014 in the Lublin Province. On the basis of parents’ declarations it can be seen that most respondents did not encounter dif­ficulties in the professional sphere or the sphere of marriage, but in tasks connect­ed with raising a child with a disability. Problems that appear in parenting chil­dren with disabilities concern most of­ten health care services, rehabilitation and the way the disabled are treated by others.
Separacja prawna małżeństwa w kontekście nietrwałości małżeństwa ponowoczesnego
Authors: Miernik Urszula
Published: February 2021

The changes in the postmod­ern world significantly influenced on the marriage and family. Impermanence of the marital bond is the characteristic for contemporary relations in marriage. „Society of risk” puts on the individual the duty of creating his/her own bibliog­raphy and marriage becomes not a con­struct but a process. The object of in­terest of the paper is separation of mar­riage. The name of the phenomena de­scribes the factual and the legal state of the spouses which appeared after the breakdown of the life together. Legal in­stitution of separation is a specific legal figure which, in the perspective of a so­ciety, places the individuals in the state of suspension. Uniqueness of the state reminds the liminal phase distinguished in the process of ceremonies of passage (Arnold van Gennep). Every significant event in the life of a man, it is a passage from one social state to another (which is strictly defined). Liminal stage is a pe­riod of exclusion – to be in the between. Legal separation can be depicted as a pe­riod of some kind of marginalization of an individual. It uniqueness is built on this that an individual can ultimately define himself/herself by restoration of marital life. In this case it will be recon­stitution function of separation. The per­son can take decision about termination of his/her marriage by divorce. There is also possibility of remaining in separa­tion without any determination of the period of its ending. The aim of the pa­per is the try to get the answer on following question: does the institution of sep­aration favour the stability of marriage?
Rodzina jako źródło szczęścia
Authors: Zwoliński Andrzej
Published: February 2021

Happiness is experienced by man as these factors of life which give meaning to his life and are worth living for. Happiness seems to be close to life; it blends with it and becomes one with life, giving it a unique character. Although it is difficult to describe or name, it trans­lates into a sense of satisfaction, a smile, an everyday joy. Essential factors of hap­piness exist in the closest – in the spatial sense – relationships with other people. Experience shows that there is nothing that could be called „personal happiness” as complete happiness lies in relation­ships with others. Our happiness is com­pletely dependent on other people. It is associated with family, friends, neigh­bors and those who became close to us. According to V. E. Frankl love is the only way able to embrace the fullness of be­ing of another person. Only in love, we are able to perceive fully the qualities of people, to realize our own potential to build a better world. This is not the re­sult of impulses or sex drive, but a phe­nomenon as fundamental as sex, which is a way to express love. Love is a unique experience of the highest form of intima­cy with another person.
Revisión de las tecnologías avanzadas para la producción de butanol: un biocombustible alternativo.
Authors: Grisales-Díaz Víctor Hugo
Published: February 2021

El butanol es un biocombustible alternativo al etanol con más alto rendimiento energético y menos corrosivo. La principal ventaja de la producción biológica de butanol es la capacidad de fermentar tanto hexosas como pentosas, lo que lo hace una ruta atractiva para la valorización de residuos biomásicos. No obstante, esta fermentación en procesos convencionales tiene una baja productividad y concentración de producto, es decir, tiene una elevada inversión de capital y requerimientos de energía. Por tal motivo, en esta revisión se analizan las ventajas y desventajas de las diferentes tecnologías alternativas para la producción biológica de butanol. Entre las posibles tecnologías, se estudió la fermentación en etapas usando dos tipos diferentes de microrganismos, sistemas de recuperación in situ, sistemas con recirculación de biomasa e inmovilización celular. Una sola tecnología por sí sola no es capaz de solventar los bajos coeficientes de desempeño de la fermentación. Por lo cual, solo a través de diseños que combinen estas tecnologías se será capaz de volver la producción biológica de butanol grande otra vez. Entre las posibles combinaciones para valorizar los residuos lignocelulósicos, sistemas integrados con evaporación a vacío o con sistemas extractivos con solventes, con producción previa de ácido láctico y recirculación de biomasa, son interesantes ya que permiten alcanzar rendimientos cercanos al teórico, pueden incrementar la productividad en más de dos veces y tiene requerimientos de energía relativamente bajos (7-8 MJ/kg).
Evaluación de un sistema de comunicación óptico empleando modulación por desplazamiento de fase QPSK, 8PSK y 16PSK utilizando la técnica FDM.
Authors: Ropero-Torres Dionel , Puerto-López Karla , Guevara-Ibarra Dinael
Published: February 2021

En este artículo se presenta el planteamiento de un sistema de comunicaciones óptico; partiendo desde el origen de la señal,generación de la modulación y el envío de datos por el canal. Se modulan los datos usando modulación por desplazamiento de fase (PSK, de phase shift keying), empleando la técnica de multiplexación por división de frecuencia (FDM). Se analiza el rendimiento del sistema de comunicaciones óptico realizando una comparación entre los formatos de modulación Q-PSK, 8-PSK y 16-PSK. Como herramienta de evaluación se emplean: la tasa de error de modulación (MER, modulation error rate) y la medición del error de la magnitud del vector (EVM, error vector magnitude). Se concluye que el valor el valor promedio en MER para 16-PSK está en un 41% mayor que en Q-PSK y 8-PSK.Asimismo, el error EVM es 49% menor comparado con Q-PSK y 8-PSK, arrojando que el formato 16-PSK genera un mayor rendimiento y calidad en la transmisión de información para este tipo de sistemas.
La empresa privada y la construcción de paz en el Catatumbo, Colombia.
Authors: Gonzalez-Mendoza Julio Alfonso
Published: February 2021

El presente estudio se realizó en los mayores centros poblados del noreste colombiano, Selva del Catatumbo, donde históricamente ha habido disputas entre grupos armados al margen de la ley. El objetivo es explicar el desarrollo empresarial frente al fin del conflicto y construcción de paz; la metodología utilizada es mixta, para lo cual se recabó información de 70 empresas. Los resultados indican que los empresarios consideran que al haber cese del conflicto armado, habrá desarrollo empresarial y social, mejorará la competitividad y se abrirán nuevos mercados.
Desarrollo de una metodología para la predicción de curvas características en bombas periféricas.
Authors: Valencia-Ochoa Guillermo , Acevedo-Peñaloza Carlos , Duarte-Forero Jorge
Published: February 2021

Las bombas rotodinámicas han presentado un desarrollo muy notable en los últimos años; debido a esto, su implementaciónse ha diversificado ampliamente en aplicaciones industriales y domiciliarias. La modificación de los parámetros de operación que definen lascaracterísticas de la bomba regenerativa afecta directamente su eficiencia. Por otro lado, las curvas características que determinan elcomportamiento hidráulico de una bomba son utilizadas para definir el punto de operación y escoger una bomba adecuada para las condicionesde funcionamiento de un sistema hidráulico. En este artículo, se presenta una metodología para ajustar la curva teórica de una bombarotodinámica periférica utilizando factores que influyen en su desempeño considerando que limitaciones físicas que se presentan durante suoperación afectan la precisión en la descripción del fenómeno. La ecuación de Euler es utilizada para determinar un conjunto de correlacionesque describen el comportamiento real de la bomba periférica tomando en cuenta la velocidad absoluta del alabe y la componente periférica dela velocidad del fluido que interactúa con el rodete; luego, los datos generados son utilizados para comparar la ecuación de la velocidad del flujodefinida con la caracterización geométrica de una bomba regenerativa disponible en el mercado. Por último, se desarrolló una modificación enla ecuación teórica de Euler para predecir la curva real de la bomba regenerativa alcanzando un porcentaje de error menor al 5%.
Modelo sistémico turístico para el municipio de Gramalote, Colombia.
Authors: Cancino Susan , Ortiz-Flórez Jazmín Solange , Cancino-Escalante Giovanni Orlando
Published: February 2021

Este artículo presenta un modelo sistémico turístico para el municipio de Gramalote, Norte de Santander (Colombia). Para talefecto se efectuaron encuestas a los diferentes actores de la cadena turística como los establecimientos de hospedaje y alimentos, agencias deviajes, transporte, turistas y habitantes. Dentro de las conclusiones se tiene que el municipio presenta características para la implementación deun destino turístico de naturaleza y cultural, sin embargo, se identificó la escasa incidencia de los intermediarios turísticos como instrumentosde comercialización, la inexistencia de infraestructura in situ y bajo nivel de formación turística.
Velocity Profile of a Ferrofluid in the Presence of Rotating Magnetic Fields. Pseudo-Analytical and Numerical Solutions.
Authors: Jiménez-Leyva Cristian Camilo , Vargas-Torres Hermann Raúl , Correa-Cely Carlos Rodrigo
Published: February 2021

From the beginning of ferro-hydrodynamics, several authors have proposed analytical models to describe the movement of ferrofluids in the presence of rotating external magnetic fields. To this effect they have made valid simplifications in certain and very restricted physical situations. In this work we analyze the effects of these approaches against numerical solutions that do not make use of them. A sample of ferrofluid immersed in containers with three types of geometries was considered: one of flat and parallel plates, one cylindrical and another coaxial cylindrical. Velocity profiles were obtained by these two strategies. The analytical solution leads to a linear model with several simplifications, while the second, numerical in nature, generates a non-linear model, but without approximations. The simulation results showed that the  implifications made in the analytical strategy generate profiles that are valid only for magnetic field intensities lower than the respective ferrofluid saturation values. Additionally, and given the level of development of analytical modeling, it was found that the numerical solution is currently the most appropriate to evaluate the ferro-hydrodynamic model, since it does not have restrictions related to the intensity of the magnetic field. In the same way, it allows to evidence the phenomenon of saturation in the velocity profiles by increasing the intensity of the magnetic field, a situation observed experimentally, and unpredictable by means of these currently available pseudo-analytical solutions.
A comparative analysis of the ERP tools, Odoo and Openbravo, for business management.
Authors: Gómez-Llanez Claudia Yamile , Diaz-Leal Nelly Rosana , Angarita-Sanguino Carlos René
Published: February 2021

The comparative analysis of the two (2) enterprise resource planning (ERP) systems, Odoo and Openbravo, was a research work that began with the characterization of the ERP tools, the description of the general characteristics, the functionalities (hardware and software) and the advantages and disadvantages of each ERP system. The criteria for each aspect evaluated were selected under the ERP System Selection Methodology (MSSE) [1], establishing the weights or ratings for each of the functional, technical, vendor, service and economic aspects of each ERP under study, allowing an individual evaluation and comparison of the two (2) systems with the ultimate goal of selecting the highest scoring tool and defining the degree of coupling with the company in the mining sector in Norte de Santander, Cúcuta Colombia. Finally, the conclusions of the research were presented to the research community, as well as to the bibliographic references studied.
Cálculo del número de Poiseuille para flujo laminar plenamente desarrollado en ductos de diferentes secciones trasversales.
Authors: Ortiz-Sánchez Yesid , Florez-Serrano Elkin G. , Laguado-Ramírez Raquel Irene
Published: February 2021

El uso de ductos es una alternativa importante en el transporte de fluidos, siendo un problema común de ingeniería obtener lacaída (pérdida) de presión o transferencia de calor en el fluido. Para evaluar estos fenómenos, el número de Poiseuille (f ReDh) es de muchaimportancia. En el presente artículo, este número ha sido calculado para flujo laminar plenamente desarrollado en ductos de diferentes seccionestrasversales usando el software TRANSCAL, el cual ha sido desarrollado por el Laboratorio de Simulación Numérica en Mecánica de Fluidosy Transferencia de Calor – SINMEC-, de la Universidad Federal de Santa Catarina. En la implementación de los cálculos realizados en elsoftware, se introdujeron los parámetros utilizando la analogía entre la ecuación diferencial de cantidad de movimiento en la dirección del flujoy la ecuación diferencial de energía del fluido, con el objetivo de obtener la velocidad media del fluido en el ducto.
Factores determinantes en la creación de Spin-off Universitarias.
Authors: Castro-Rodríguez Ángela María , Martínez-Ardila Hugo Ernesto , Camacho-Pico Jaime Alberto
Published: February 2021

Las spin-off universitarias constituyen uno de los modelos de transferencia de tecnología que promueven la comercializacióndel conocimiento, los resultados de investigación y la propiedad intelectual de la universidad; siendo considerado uno de los principalesimpulsores del cambio y el crecimiento económico de los países. Este estudio desarrolla una revisión de artículos científicos indexados en labase de datos bibliográfica Web of Science, con dos propósitos: (i) identificar los factores determinantes en la creación de spin-off universitarias;y (ii), establecer las brechas de conocimiento que permitan desarrollar una agenda de investigación en el tema. Como resultado, la informaciónde los factores identificados se sintetizó en cuatro categorías: i) la universidad, ii) los académicos, iii) los intermediarios de transferencia detecnología, y iv) los factores del entorno Los resultados contribuyen al debate sobre cómo las variables identificadas inciden e interactúan adiferentes niveles en la creación de spin-off universitarias y las implicaciones tanto para futuras investigaciones como para la práctica, entérminos de políticas institucionales y regionales.
Equipo para la verificación de conexiones soldadas de tuberías recubiertas internamente
Authors: Aperador-Chaparro William , Castiblanco Gabriel Humberto
Published: February 2021

El presente paper describe el diseño y la construcción de un equipo que permite la verificación de conexiones soldadas de tuberías recubiertas internamente, utilizadas en el transporte de fluidos del sector petrolero, permitiendo caracterizar las diferentes fallas que ocurren en los procesos de soldadura e instalación antes de poner en operación los sistemas de transporte, este equipo permite hacer la detección de fallas y problemas que pueden presentarse en los procesos de instalación, haciendo uso de la técnica de espectroscopia de impedancias electroquímica (EIS). El equipo cuenta con un sistema mecánico para el desplazamiento del sistema de medición a lo largo de tuberías de 6 a 12 pulgadas de diámetro. Permite detectar fallas en los recubrimientos como lo son ampollas, grietas, fisuras y quemaduras producidos principalmente por el transporte y las altas temperaturas en los procesos de soldadura. El sistema cuenta con un equipo de medición basado en la técnica de espectroscopia de impedancias (EIS) y una interfaz de usuario que permite mover el dispositivo a lo largo de la tubería, controlar el punto de medición realizando barridos en 4 puntos principales a 0°,90°,180° y 270°, almacenando los datos de medición y procesándolos en una interfaz gráfica en Matlab, el diseño de portabilidad cuenta con un sistema de comunicación Bluetooth y un cable umbilical de alimentación para energizar el sistema y hacer la conexión a tierra de la tubería. Los ensayos realizados durante el desarrollo del equipo permitieron caracterizar la impedancia de varias superficies y asociar rangos a las diferentes imperfecciones en los recubrimientos.
Implementación de la Técnica de Correlación de Imágenes Digitales con Software Libre
Authors: Diaz-Rodríguez Jorge Guillermo , Castillo-González Iván Mauricio , Peñaranda-Domínguez Adrián Eduardo
Published: February 2021

Hoy en día, la medición experimental de esfuerzos se hace por medio de técnicas que entregan campos completos de deformación o de la diagonal principal de una matriz de esfuerzos. La técnica de Correlación de Imágenes Digitales (DIC en idioma inglés) entrega desplazamientos del campo de visión mediante el análisis de fotografías digitales antes y después de una carga. Existen sistemas comerciales, que tienen un elevado costo, y sistemas de código abierto y gratis pero que no tienen soporte; esto hace que su implementación presente dificultades. El articulo trata de la apropiación de la técnica DIC usando software de código abierto. Para esto, se hicieron algunos ensayos de medición y se compararan con soluciones analíticas para evaluar la precisión de la medición experimental. Resultados se comparan con análisis por elementos finitos encontrando que para dar mediciones cualitativas, que puede ser el caso de demostraciones, un lente no muy especializado puede ser útil, mientras que para mediciones cuantitavas se requieren de acercamientos sólo dados por lentes macro.
Ética profesional en empresas de servicios de telefonía móvil en Venezuela.
Authors: Castro-Alfaro Alain , Paz-Marcano Annherys Isabel , Pinto-Aragón Elvis Eliana
Published: February 2021

La ética profesional, comprende un elemento dinámico de la formación integral del hombre, para insertarse al mercado laboral, estado sujeto a un desempeño transparente, el cual facilita distinguirse por su actuación en lo bueno o malo en lo que hace como resultado de su quehacer. De allí el propósito del presente trabajo investigativo, alude a analizar la ética profesional en empresas de servicios de telefonía móvil en Venezuela; estructurado metodológicamente por un paradigma cuantitativo, positivista, tipo de investigación descriptiva, diseño no experimental, transaccional, de campo. Población 6 gerentes y 27 colaboradores. Técnica la encuesta e instrumento un cuestionario de 26 ítems con dos alternativas de respuesta dicotómicas de si o no, validado por 7 expertos, la confiabilidad arrojo 90 % de fiabilidad. Para el análisis de los resultados se usó la estadística descriptiva e interpretándose los datos mediante un baremo. A modo de conclusión, se aplican factores que determinan la ética profesional, además de principios éticos como aprender a emprender, autodeterminación, transferencia de conocimientos, vocación de servicio y compromiso organizacional, para contribuir a la humanización empresarial y alcanzar los objetivos planificados de la gestión organizacional, como resultando de un bien desempeño profesional en términos éticos y transparentes.
Pequeñas y medianas empresas y estrategia comercial: caso CONEMPRE Bucaramanga, Colombia
Authors: Porras-Nieto Ligia , Amparo Orrego Gloria , Cáceres-Caballero José Ascensión
Published: February 2021

El trabajo tuvo como objetivo elaborar un plan estratégico en la estructuración de una línea base de intervención para la red empresarial CONEMPRE de Bucaramanga, realizado en alianza con la Universidad de Santander y la Asociación de Consejeros Empresariales Red Empresarial (CONEMPRE), visionando a mediano plazo, el crecimiento y la participación de 13 empresas vinculadas a la Red, seleccionadas en la fase piloto del proyecto, a las cuales se les hizo un diagnóstico para determinar sus fortalezas y debilidades, estableciendo además su capacidad competitiva. En segundo lugar, se propuso un plan estratégico cuya ejecución fue conducente al mejoramiento de las comunicaciones y la capacidad promocional. El proyecto permitió poner a prueba la hipótesis planteada, haciendo uso de medios para la recolección de datos, cuyo análisis facilitó información estratégica para estructurar la línea base de intervención para la Red
Metodología de transferencia de capacidades de capital humano para gestión de proyectos en juntas de acción comunal. Caso Colombia.
Authors: Millán-Pérez Carlos Alfredo , Castro-Silva Hugo Fernando , Ferney-Virgüez Jonathan
Published: February 2021

La transferencia de capacidades en las organizaciones es fundamental para la consecución de determinados fines y la optimización de la competitividad organizacional, la gestión de proyectos permite la aplicación de conocimientos y habilidades, a las actividades del proyecto para cumplir con los objetivos del mismo. Para las Juntas de Acción Comunal se asocia con la cultura y la necesidad de adaptar las mejores prácticas a las necesidades del contexto para cumplir con sus objetivos misionales. La junta de acción comunal es una organización sin ánimo de lucro integrada voluntariamente por residentes de un lugar, su objetivo es aunar esfuerzos y recursos para procurar un desarrollo integral de un barrio, vereda o comuna, también recae sobre ellos, la tarea de gestionar proyectos para el desarrollo de sus comunidades y ser entes conexos a la Administración Pública. El objetivo de esta investigación es diseñar una metodología de transferencia de capacidades de capital humano para la gestión de proyectos de Juntas de Acción Comunal Sogamoso (Boyacá), mediante el uso de investigación aplicada se aplicó una encuesta a los 139 presidentes de JAC que componen la población total o población objetivo, apoyada en la revisión e interpretación de literatura de los cuerpos de conocimiento de PMBOK e ICB 4 y el modelo de gestión del conocimiento SECI. Con lo anterior se desarrolló una metodología que pudiese ser transferible a los dignatarios, con el propósito de mejorar la gestión de dichas intervenciones.
Social entrepreneurship during COVID-19 pandemic
Authors: Ćwiklicki Marek , Sienkiewicz-Małyjurek Katarzyna
Published: February 2021

We dedicate this thematic issue to both micro civic initiatives and broader social actions emerging in times of crisis caused by pandemics and other natural disasters. The articles contained in this volume comprehensively address the issue of entrepreneurship from a social, public, and academic perspective. As a result, a collection of publications has been created which constitutes a foundation for drawing knowledge about entrepreneurship as well as seeking scientific inspiration in this research area.
The impact of the COVID-19 pandemic on social research of age and ageing
Authors: Urbaniak Anna
Published: February 2021

In the COVID-19 pandemic, social researcher faced unprecedented constraints as most of their data collection techniques base on direct human interaction. As a result, many researchers involved in ageing research are now faced with ethical and methodological challenges. The aim of this article is to provide a subjective reflection on the ethical and methodological aspects of conducting social research on old age and ageing during the COVID-19 pandemic. I identify the factors influencing social research during the COVID-19 pandemic and then present ethical and methodological questions that may have arisen at each stage of the research process. There are no universal strategies nor solutions for of conducting social research on old age and ageing during the COVID-19 pandemic.
Resilience and entrepreneurship in emergency management
Authors: Sienkiewicz-Małyjurek Katarzyna
Published: February 2021

The concepts of resilience and entrepreneurship in emergency management can contribute to increasing the ability to cope with threats. However, research and analysis in this area are limited. Research on resilience and entrepreneurship in emergency management has largely focused on the impact of these concepts on emergency management, with limited attempts to find out how they interact together. For this reason, the aim of this article is to systematize the knowledge of the role of resilience and entrepreneurship in emergency management and to establish mutual relations between these concepts. The aim of this article was achieved based on a systematic literature review using the PRISMA Group methodology. As a result, the characteristics and impact of both resilience and entrepreneurship on emergency management were presented, the importance of these concepts in social terms was shown, and the mutual interactions between them were identified. The obtained results indicate that emergencies constitute change accelerators that create opportunities for social and public entrepreneurship development. Resilience and entrepreneurship interact; together they create better abilities to deal with threats.
Financing of social economy entities and the development of social entrepreneurship in Poland. Pre-pandemic crisis conclusions and post- pandemic crisis reflections
Authors: Jonek-Kowalska Izabela
Published: February 2021

The development of social entrepreneurship is associated with many barriers of various nature. One of the most serious is the lack of financial resources, which becomes particularly acute and troublesome in times of economic crisis. Considering the above circumstances, the main goal of the considerations and research conducted in this article is to identify the directions of development of social economy entities in Poland and to analyze the sources of financing their activities from a historical and forecasting perspective (in the context of the economic crisis caused by the Covid-19 pandemic). In order to achieve this goal, the article uses a statistical analysis of data on the sources of financing of social economy entities in Poland. The conducted analyzes show that, historically, social entrepreneurship in Poland was systematically, but slowly, developing. This is evidenced by the growing number of entities operating in the field.
Fundraising competitive forces of small art and cultural NGOs during the crisis
Authors: Radilova Olesya , Ziomek Agnieszka
Published: February 2021

The paper provides an analysis on fundraising competitive forces of small art and culture organizations in order to identify optimal features of fundraising strategy development during and after crisis time when absence of donors becomes a pressing issue. The analysis is fulfilled based on Michael Porter five forces model structure. Fundraising strategies should focus on intensive development of advanced communication with donors through modern technology application and reflect an integral vision of social needs which is the key success factor of fundraising strategy implementation in independent autonomous organizations. Financial resources in nonprofit sector seriously affect the stability of programs implementation. The lack of stability undermines organization efficiency what is evident to donors. This requires formulation of strategy for professional and repetitive fundraising.
Synthetic route optimization of Sumepirin antiepileptic drug candidate
Authors: Dzyurkevich M. S. , Shtyrlin N. V. , Shtyrlin Y. G.
Published: February 2021

In this work we describe the transformation of synthetic route of the antiepileptic drug candidate Sumepirin starting from discovery stage. Initial method included six step process requiring two steps of purification using colon chromatography and has poor overall yield of target compound. The process developed is convenient, scalable, technological and meet the most of conditions of green chemistry. The overall yield was increased up to 62.5% in four steps without colon chromatography purification which allows to obtain the target compound with purity of 99.5+% which is especially important for the active ingredient.
Improving the environmental production of electrodes for solar panels
Authors: Patianova A. O. , Ivanova K. Yu. , Rogozhina L. G. , Kuzmin M. V. , Semenov V. L.
Published: February 2021

Biodegradable aminosiloxanes have been synthesized by the interaction of 3-aminopropyltriethoxysilane with monoethanolamine in the presence of a binary antioxidant and an alkali metal alcoholate. The synthesized compounds were used to develop flux compositions for tinning copper wire and producing electrodes for solar panels. The wetting ability, fluxing activity and biodegradability of the flux were investigated. The possibility of using a flux for hot tinning of copper wire is shown, which makes it possible to increase the environmental friendliness of the production of electrodes for solar panels.