bluuebunny/crossref_metadata_2025 huggingface dataset:
Composite Materials and Structural Glass: Adhesion Phenomena
Authors: Speranzini
Published: March 2022

This study aims to investigate the adhesion phenomena between glass and composite materials, which - if they work in synergy – can increase the performance of glass structures, as regard both structural elements and the manufacture of joints. The experimental programme consisted of shear traction tests on all samples: glass-glass singlelap shear adhesion, glass-GFRP double-lap shear adhesion and glass-SRP shear adhesion. Different types of adhesive and various interface geometries were also tested to evaluate the ultimate force and identify fracture patterns with different bonding lengths. It was possible to identify the effective bonding length for each type of resin used to prepare test samples, by taking fracture load and average peel stress into account. Bonding length variations were also recorded. This enabled the values of bonding length to be verified analytically. Based on experimental results, a formula for the evaluation of delamination resistance and the optimal bonding length is proposed.
Maintance by Water-Cleaning and Efficiency Reduction of PV Panels
Authors: D. Termini  , G. Ragonese
Published: March 2022

With the increase in the use of solar energy, both in civil and industrial environments, the problem of maintenance of photovoltaic panels becomes extremely important. In this work attention is restricted to the problem of cleaning and safety conditions of the photo-voltaic (PV) panels and a brief review of main effects determining their efficiency reduction are reported. The discussion related to problems and unsafe functioning conditions concludes this paper.
Investigation on the Influence of the Interfacial Slippage on the Whole Moving Surface in an Inclined Fixed Pad Thrust Slider Bearing
Authors: Huansheng Cheng  , Yongbin Zhang
Published: March 2022

The influence of the interfacial slippage on the whole moving surface on the carried load and friction coefficient of an inclined fixed pad thrust slider bearing is analytically investigated. The calculation results show that the carried load of this mode of bearing is normally much lower than that of the conventional inclined fixed pad thrust slider bearing, while the friction coefficient of this mode of bearing is significantly higher than that of the conventional bearing, when the operating condition is the same. With the reduction of the contact-fluid interfacial shear strength on the moving surface, the performance of this mode of bearing is worsened. These results suggest the necessity of preventing the interfacial slippage on the moving surface in an inclined fixed pad thrust slider bearing.
Assessment of Backscattered Radiation Dose at Exposed Object’s Level during X-Ray Examinations
Authors: Abdullah Taher Naji  , Gobran N. Ali
Published: March 2022

This paper estimates backscattered radiation doses at patient’s positioning level (exposed object) using different X-ray tubes. The effects of different exposure sittings (X-ray tube voltage, exposure intensity, exposed area, dosimeter position, and distance between X-ray tube and imaged object surface) on backscattered radiation doses are estimated using different dosimeters and x-ray units. The quantity of recorded backscattered radiation dose -which reflects from patient’s table or bucky to image receptor and exposed patient - is determined by the position of dosimeter between exposed object’s table or bucky and X-ray tube according to backscatter angle, at higher backscattered angle, the dosimeter records more backscattered dose. The results showed that, increase in kVp, exposure intensity, and exposed area led to a concomitant increase in the quantity of backscattered radiation, whereas the Increase in distanc e between X-ray tube (source) and imaged object surface reduces the amount of backscattered radiation dose. As well as, there is no remarkable difference in recorded backscattered dose due to the position of X-ray tube or the direction of incident X-ray photons.
Systems of Measurement for the Construction of Geometrical Models
Authors: Aleksandr Yurievich Brailov
Published: March 2022

In the present work, the relevant components of the two basic system of measurement are defined through the analysis of existing systems of measurement for geometrical modeling. The major features of such systems related to the ways of formation of the two-dimensional complex drawing of a geometrical image on the basis of laws of projective connections are revealed. Interrelations of the elements of different systems of measurement with various projections of a geometrical image are defined. The relative location of projections of a geometrical image into the constructed two-dimensional complex drawings for various systems of measurement is discussed. The rationale behind a particular arrangement of views in the projective drawing of a product in the analyzed systems of measurement is explained.
Study of Composition Variation on Dielectric and Impedance Spectra of Tetragonal-Rhombohedral System in (1-x)BZT-(x)BCT Composites
Authors: Himani  , Thakur Shweta , Singh Anupinder , Rai Radheshyam
Published: March 2022

Abstract: In present work, (1-x)[BaZr0.2Ti0.8O3]-(x)[Ba0.7Ca0.3TiO3] (BZT-BCT) (where x = 0.50, 0.60 and 0.75) were fabricated by solid-state reaction technique. Structural, dielectric and impedance properties of the synthesized composites were investigated and discussed in detail. The X-ray diffraction technique shows that all the samples possessed a double-phase polycrystalline sample with a tetragonal-rhombohedral structure. Dielectric and impedance behavior were investigated in a wide range of temperatures (room temperature (RT) - 500˚C) and frequency (100 Hz ≤f ≤ 1 MHz). A broad dielectric constant peak was observed around the phase transition temperature.
Fabrication and Characterization of DSSC/Si Tandem Solar Cell with PEDOT:PSS/ITO Buffer Layer
Authors: Masaya Ando  , Kato Shinya , Kishi Naoki , Soga Tetsuo
Published: March 2022

In this study, dye-sensitized solar cell (DSSC)/silicon tandem solar cells were fabricated by changing the buffer layer structure. When joining two cells, a buffer layer is important to efficiently transport electrons by suppressing buffer of electrons by a potential barrier. Therefore, we used PEDOT:PSS/ITO as buffer layer structures, and measured their solar cell characteristics. As a result, it was found that the structure in which both PEDOT:PSS layer and ITO layer are stacked as buffer layers is suitable for the buffer layer of DSSC/Si tandem cells. In addition, the characteristics improved each time DMSO was added to PEDOT:PSS, and as a result, the characteristics of tandem solar cells also tended to improve. The maximum conversion efficiency (Voc = 0.78 V, Jsc = 4.87 mA / cm2, FF = 0.62, Eff = 2.35 %) was obtained when the DMSO concentration was 1%. It was suggested that conversion efficiency can be improved by improving the buffer layer.
The Effect of Fuel Emulsion on Fuel Saving in Cement Kilns
Authors: S. Soulayman  , R. El-Khatib
Published: March 2022

In this work, the combustion of heavy oil and its emulsions with water, in the cement kilns, was investigated in experiments on an industrial scale. The performance of the cement rotary kilns, used in Tartous Company for cement and construction materials, was studied when they were employed to be operated with heavy fuel oil (HFO) and with the water phase of emulsified heavy oil containing 8 vol. % water and 92 vol. % heavy fuel oil (HFO). The emulsified water/heavy fuel oil (W/HFO) with 8 vol. % of water content showed no separation and contained the smallest and most homogeneous water-in-HFO (W/HFO) droplets after stability tests. Four rotary kilns have been operated for 4 months with a regular heavy fuel oil HFO and W0.08/HFO0.092. It has been found that the micro-explosion, observed in W0.08/HFO0.092, improved the kiln efficiency and reduced the fuel consumption by 10.31% in the case of normal feeding while the fuel saving increases with decreasing the feeding rate and reaches 12.99 at low feeding rate. The effect of emulsified fuel on the composition of Portland cement clinker that produced in Tartous Company for cement and construction materials using these two types of fuels is investigated. It is found that the influence is practically negligible on the Alite and Ferrite phases of clinker composition while the influence on the other two phases is important.
Spectral Beam Splitting Technology for Photovoltaic and Concentrating Solar Thermal Hybrid Systems: A Review
Authors: Xin Zhang  , Dongqiang Lei  , Pan Yao  , Biao Guo  , Zhifeng Wang
Published: March 2022

As a promising technology, spectral beam splitting (SBS) technology is the research focus currently in photovoltaic and concentrating solar thermal (PV/CST) hybrid systems. Spectral splitting filters can optimally exploit the solar spectrum and reach higher conversion efficiencies of solar energy. In this paper, we provide a review of the recently published research in spectral splitting filters and summary the research details of SBS technology, including the proposed methods, types, materials, performance advantages, technical obstacles of the filters. Moreover, the paper presents the research status of the SBS technology and evaluates the prospects of various filters in PV/CST hybrid systems. This review can help the researchers and practitioners better understand the SBS technology and features of different spectral splitting filters for the PV/CST hybrid system.
A Review Study on the Modeling and Simulation of Solar Tower Power Plants
Authors: Samir Benammar
Published: March 2022

Much attention has been paid to concentrating solar power technologies (CSP) in the last two decades. Among the CSP that have been developed so far are the parabolic trough, the parabolic dish, the Fresnel collectors and the solar tower. However, the most widely used of these technologies is the solar tower power plant (STPP). This review aims to summarize the state-of-the-art modeling approaches used to simulate the performances and the reliability of the STPP. The review includes the different analytical and numerical models used in literature to predict the thermal efficiency of these STPP. A general description and comparison of different CSP technologies are first provided. An overview of STPP technology, current status and a presentation of the major components including the heliostat field and the solar receiver are then highlighted. The different research works, developed on the modeling and simulation of the STPP performances and reliability, are also investigated in this review. In summary, this work presents a comprehensive review of the existing numerical and analytical models and could serve as a guideline to develop new models for future trends in solar tower power plants.
Influence of the Base Element on the Thermal Properties of Non- Ferrous Chromium-Rich TaC-Containing Alloys Elaborated by Conventional Casting: Part 1: Thermodynamic Approach, Melting Ranges, as-Cast Microstructures and Thermal Expansion
Authors: Lionel Aranda  , Patrice Berthod  , Jean-Paul K. Gomis  , Zohra Himeur
Published: March 2022

After preliminary thermodynamic calculations for verifying their refractoriness, six (Ni,Co)-based alloys were synthesized by casting. They contain chromium, carbon and tantalum to achieve interesting chemical and mechanical high temperature properties. Their microstructures in the as-cast state were observed by electron microscopy (SEM) to discover the carbides characteristics. Differential thermal analysis (DTA) was carried out for all of them to assess their melting points notably, for having better knowledge about the level of high temperature at which they can be used potentially. Thereafter thermomechanical analyses (TMA) were run to explore their behaviour in thermal expansion. As shown by the thermodynamic calculations all the alloys are theoretically possible to be shaped by conventional foundry due to liquidus temperatures all below 1400°C. According to these same results, the solidus temperatures of all alloys would stay over 1250°C, this suggesting that all alloys would be able to be used under moderate mechanical stresses at temperatures as high as 1200°C. As suggested by calculations, the as-cast microstructures are all dendritic and the interdendritic spaces are occupied by carbides. According to calculations again, the Ni-richest alloys contain chromium carbides, but tantalum carbides are also present, a presence which was not expected. In contrast the Co-richest versions contain only TaC carbides. The DTA experiments show that the solidus and liquidus temperatures both increase by going from the Ni-richest alloys to the Co-richest ones. The TMA experiments demonstrate that the thermal expansions and thermal contractions are rather continuous, without any irregularities, and the average thermal expansion coefficients, all close to 20 × 10-6K-1, do not systematically depend on the respective proportions of nickel and cobalt. This first part of the whole work will be followed by two other parts dealing with the effect of these Ni and Co proportions on the high temperature oxidation phenomena, for temperature variations and for isothermal conditions respectively.
Analysis of EXAFS Spectra of Crystalline Copper using Classical Anharmonic Correlated Einstein Model
Authors: Tong Sy Tien
Published: March 2022

In this work, the temperature dependence of extended X-ray absorption fine structure (EXAFS) of the crystalline copper structure was calculated and analyzed using the anharmonic correlated Einstein model and the classical statistical theory. The thermodynamic parameters of a system are derived from an anharmonic effective potential that has taken into account the influence of all nearest neighbors of absorbing and backscattering atoms in the crystal lattice with thermal vibrations, where the Morse potential is assumed to characterize the interactions between each pair of atoms and the function of anharmonic EXAFS spectra presented in terms of the cumulant expansion up to the fourth-order. Analytical expressions for the first four cumulants and their contribution to amplitude reduction and phase shift obtained in the simple form of the mean-square relative displacement or the correlated Einstein frequency. The numerical results for crystalline copper were in good agreement with those obtained by the other theoretical procedures and experiments at several temperatures. The analytical results show that this calculation model is useful to reduce measurement and data analysis of experimental EXAFS spectra.
Results of percutaneous closure with device in congenital heart disease of the atrial septal defect type
Authors: Larco Coloma Jesús Nicolás , Larco Noboa Nicolás , Rumazo Zambrano Alegría
Published: March 2022

Congenital Interatrial Septal Defects (TEA) are among the most common Congenital Heart Diseases in the population, where Atrial Septal Defect stands out, which is produced by a left-right short circuit that provides greater survival and less morbidity and mortality. The objective was to determine the results of Percutaneous Closure with a Device in Congenital Heart Disease of the Atrial Communication type at the Carlos Andrade Marín Specialty Hospital (Quito) in the Hemodynamics service from January 2009 to July 2019. It is a retrospective descriptive cross-sectional study . With a population of 122 cases from the AS400 registry. Thus, it was determined: there is a female predominance in a ratio of 2:1, the ranges for defect intervention were 5.5 mm to 35 mm, post-procedure pulmonary artery pressures (systolic 18-25 mmHg and diastolic 6-10 mmHg) in 95% of patients, ventricular overload in 76% in pre-procedure patients. Concluding that 96% of our population has a significant post-procedure improvement.
Bluebirds and Other Cavity-Nesting Birds: Youth Project Book
Authors: Rodriguez Loretta , Jordan Joy , Hostetler Mark E. , Packard Christina , Kochert Jessica
Published: March 2022

4HWLM20, a 68-page illustrated project book by Loretta Rodriguez, Jessica Kochert, Joy Jordan, Christina Packard, and Mark Hostetler, helps youth aged 11-13 become careful and knowledgeable observers of bluebirds and other cavity-nesting birds. Youth will learn to create a habitat that promotes the health and safety of local cavity-nesting birds. Finally, the project guides youth to explore and learn about bluebird monitoring and data collecting programs. Includes references. Published by the Florida 4-H Youth Development Program, January 2010.
4HWLM20/4H290: Bluebirds and Other Cavity-Nesting Birds: Youth Project Book (ufl.edu)
Fertilizer Application Best Management Practices for Citrus Grove Workers
Authors: Boman Brian , Cole Darren , Futch Steve , Gunter Ward , Hebb Jack W. , Wilson P. Chris
Published: March 2022

Revised! AE248, a 12-page fact sheet by Brian Boman, Darren Cole, Steve Futch, Ward Gunter, Jack Hebb, and Chris Wilson, instructs citrus grove workers in fertilizer application best management practices. Includes references and quizzes throughout. Published by the UF Department of Agricultural and Biological Engineering, March 2009.
AE248/AE248: Fertilizer Application Best Management Practices for Citrus Grove Workers (ufl.edu)
Evapotranspiration-Based Irrigation for Agriculture: Crop Coefficients of Some Commercial Crops in Florida
Authors: Kisekka Isaya , Migliaccio Kati , Dukes Michael D. , Crane Jonathan H. , Schaffer Bruce
Published: March 2022

AE456, a 4-page fact sheet by Isaya Kisekka, Kati W. Migliaccio, Michael D. Dukes, Jonathan H. Crane, and Bruce Schaffer, identifies typical Kc values for some of the crops commonly grown in Florida. Includes references. Published by the UF Department of Agricultural and Biological Engineering, January 2010.
AE456/AE456: Evapotranspiration-Based Irrigation for Agriculture: Crop Coefficients of Some Commercial Crops in Florida (ufl.edu)
Evapotranspiration-Based Irrigation Scheduling for Agriculture
Authors: Kisekka Isaya , Migliaccio Kati , Dukes Michael D. , Schaffer Bruce , Crane Jonathan H.
Published: March 2022

AE457, a 6-page fact sheet by Isaya Kisekka, Kati W. Migliaccio, Michael D. Dukes, Jonathan H. Crane, and Bruce Schaffer, focuses on the main concepts related to ET-based irrigation scheduling and reviews the use of "smart" irrigation scheduling controllers for agricultural applications. Includes references. Published by the UF Department of Agricultural and Biological Engineering, January 2010.
AE457/AE457: Evapotranspiration-Based Irrigation Scheduling for Agriculture (ufl.edu)
Candidate Species for Florida Aquaculture: Discus Symphysodon spp., a Profitable but Challenging Species for Florida Aquaculture
Authors: Livengood E. J. , Ohs Cortney L. , Chapman Frank A.
Published: March 2022

FA166, an 8-page illustrated fact sheet by E. J. Livengood, C. L. Ohs, and F. A. Chapman, provides an overview of this disc-shaped freshwater chiclid fish — description, habitat and feeding, conservation issues, taxonomy, genetics and domestication, culture methods, and markets. Includes references. Published by the UF Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, December 2009.
FA166/FA166: Candidate Species for Florida Aquaculture: Discus Symphysodon spp., a Profitable but Challenging Species for Florida Aquaculture (ufl.edu)
Is a viable hemp industry in Florida’s future?
Authors: Blare Trent , Rivera Martha , Ballen Fredy H. , Brym Zachary
Published: March 2022

Disease and foreign competition have made many growers question the viability of traditional commodity crops such as tomatoes, citrus, and avocados. Industrial hemp appears to be an attractive alternative, as the 2018 Farm Bill permitted its production. Florida has followed several other states in approving permits in 2020 to allow production of industrial hemp. Markets for industrial hemp products were promising in the first years of production, but market prices started to decline dramatically in 2020 with many growers unable to sell all their product. In this publication, we examine the hemp value chain with a focus on opportunities in the Florida market. Better coordination between regulators, processors, financial institutions, research and Extension services, and the retail sector to build confidence, harmonize policies, and lower transaction costs would help the industry flourish and ensure growers, consumers, and hemp-related enterprises can benefit from this emerging market.
Southern Escambia County, Florida's Urban Forests
Authors: Escobedo Francisco , Varela Sebastian , Staudhammer Christina , Thompson Benjamin
Published: March 2022

FOR231, a 12-page illustrated fact sheet by Francisco Escobedo, Sebastian Varela, Christina Staudhammer, and Benjamin Thompson, reports on analysis of tree data using USDA Forest Service's Urban Forest Effects (UFORE) model, to help urban foresters, residents, and planners assess several aspects of their urban forests and compare southern Escambia County’s urban forest with forests in other cities in the state of Florida. Includes references. Published by the UF School of Forest Resources and Conservation, December 2009.
FOR231/FR293: Pensacola and Southern Escambia County, Florida's Urban Forests (ufl.edu)
Raising Healthy Children: Age Three
Authors: Clinton Rebecca A. , Shelnutt Karla P.
Published: March 2022

FCS8890, a 3-page illustrated fact sheet by Rebecca A. Clinton and Karla P. Shelnutt, provides general guidelines for parents of three-year old’s in nutrition, physical activity, and developmental milestones. Includes references. Published by the UF Department of Family Youth and Community Sciences, January 2010.
Tessellated Scale Eucalymnatus tessellatus (Signoret)
Authors: Espinosa Adriana , Hodges Amanda , Hodges Greg , Howard Forrest , Mannion Catharine
Published: March 2022

EENY456, a 4-page illustrated fact sheet by Adriana Espinosa, Amanda Hodges, Greg Hodges, Forrest Howard, and Catharine Mannion, is part of the Featured Creatures collection. It describes this soft scale, native to South America, that can be a pest in greenhouses, commercial nurseries, and in the south Florida landscape — distribution, field characteristics, life cycle, hosts, general plant damage, and management. Includes references. Published by the UF Department of Entomology and Nematology, July 2009.
EENY 456/IN826: Tessellated Scale, Ecualymnatus tessellatus (Signoret) (Insecta: Hemiptera: Coccidae) (ufl.edu)
Palmetto scale Comstockiella sabalis Comstock
Authors: Espinosa Adriana , Hodges Amanda , Hodges Greg
Published: March 2022

EENY465, a 3-page illustrated fact sheet by Adrianna Espinosa, Amanda Hodges, and Greg Hodges, is part of the Featured Creatures collection. It describes this scale pest of palms in southern U.S. Mexico and the Caribbean — distribution, description, life cycle, hosts, general plant damage, and management. Includes references. Published by the UF Department of Entomology and Nematology, November 2009.
EENY465/IN835: Palmetto Scale Comstockiella sabalis Comstock (ufl.edu)
Sugarcane Cultivar Descriptive Fact Sheet: CPCL 05-1102 and CPCL 05-1791
Authors: Sandhu Hardev , VanWeelden Matthew , Davidson Wayne
Published: March 2022

This fact sheet provides basic information and yield and disease information for CPCL 05-1102 and CPCL 05-1791 to assist growers. Written by Hardev Sandhu, Matt VanWeelden, and Wayne Davidson, and published by the UF/IFAS Agronomy Department, March 2022.
Soil Subsidence in the Everglades Agricultural Area
Authors: Wright Alan L. , Snyder George H.
Published: March 2022

SL311, a 3-page illustrated fact sheet by Alan L. Wright and George H. Snyder, describes the soils in the agricultural region in Florida south of Lake Okeechobee growing primarily sugarcane and winter vegetables, and addresses how the soils are changing with time. Includes additional sources of information. Published by the UF Department of Soil and Water Science, November 2009.
SL 311/SS523: Everglades Agricultural Area Soil Subsidence and Sustainability (ufl.edu)
Principles of Sound Fertilizer Recommendations
Authors: Hochmuth George , Hanlon Edward
Published: March 2022

SL315, an 8-page fact sheet by G. Hochmuth and E. Hanlon, describes components of science-based recommendations (best management practices) for fertilizer management in modern vegetable production. Includes sources of additional information. Published by the UF Department of Soil and Water Sciences, February 2010.
SL315/SS527: Principles of Sound Fertilizer Recommendations (ufl.edu)
Pinkeye in Beef Cattle
Authors: Irsik Max
Published: March 2022

VM141, a 3-page fact sheet by Max Irsik, describes this common disease of beef cattle that is associated with significant economic losses — causes, transmission, clinical signs, treatment, and prevention. Includes references. Published by the UF College of Veterinary Medicine, July 2009.
Técnicas de Ingeniería de Software aplicadas a la acreditación de un programa educativo de Educación Superior
Authors: Flores Lara J.A. , Robles Gómez E.J. , Arizpe Moreno V.R.
Published: March 2022

Actualmente, el Consejo Nacional de Acreditación en Informática y Computación A.C. (CONAIC). Realiza procesos de evaluación con fines de acreditación a programas del área de Informática, Computación y Tecnologías de la Información. CONAIC otorga como resultado de sus evaluaciones: la acreditación o no acreditación de las instituciones evaluadas. En este artículo, se propone una metodología basada en Ingeniería de Software, para dar seguimiento y cumplir con las categorías definidas por CONAIC, para ello se toman como base diferentes prácticas comunes utilizadas en el desarrollo de software.

Actually, the National Council for Computer Accreditation and Computing A.C. (CONAIC). Carries out evaluation processes for accreditation purposes to programs in the area of Computer Science, Computing and Information Technology. CONAIC grants as a result of its evaluations: the accreditation or non-accreditation of the evaluated institutions. In this article, a methodology approach on Software Engineering is proposed to follow up and to comply with the categories defined by CONAIC, for this they are based on different common practices used in software development.
Egresados: Apatía Institucional
Authors: Mora Colorado E. , Garcés Báez A. , Moreno Fernández Ma. del R.
Published: March 2022

Un reto importante para la educación superior en nuestro país consiste en consolidarse como un medio en el que se encuentren de manera sistemática, los instrumentos académico - administrativos que guíen el quehacer institucional en la evaluación de la pertinencia y la calidad de los planes y programas de estudio, nivel de satisfacción de los egresados con su formación, inserción en el mercado laboral nacional e internacional, satisfacción de las necesidades de los empleadores y precisión de la educación de los egresados con respecto a los estudios de posgrado nacional e internacional. El presente trabajo contiene elementos diagnósticos de algunas instituciones de educación superior sobre los egresados de las carreras de Computación y áreas afines, los cuales dan cuenta del problema de la apatía institucional con respecto a ellos. Se resalta la importancia de la participación de los egresados en proyectos de beneficio tanto para la institución como para ellos, a través de la vinculación y se proponen elementos para su “reincersión” institucional, tomando en cuenta las tecnologías de información de vanguardia, los estándares nacionales de los organismos acreditadores y los estándares internacionales como el Acuerdo de Seúl.

An important challenge for higher education in our country is to consolidate itself as a means in which the academic - administrative instruments that guide the institutional work in the evaluation of the relevance and quality of the programs and Study, level of satisfaction of the graduates with their training, insertion in the national and international labor market, satisfaction of the needs of the employers and precision of the education of the graduates with respect to their work and, as appropriate, to the studies National and international postgraduate courses. The present work contains diagnostic elements of some institutions of higher education about the graduates of the careers of Computing and related areas, which account for the problem of institutional apathy with respect to them. The importance of the participation of the graduates in projects of benefit for both the institution and for them is highlighted, through linking and proposing elements for its institutional "reincersion", taking into account cutting-edge information technologies, the national standards of accrediting bodies and international standards such as the Seoul Agreement.
Impacto de la Trayectoria Universitaria de los Rectores en la Calidad de las Universidades Públicas
Authors: Toscano de la Torre B.A. , Ponce Gallegos J.C. , Flores Crespo P.A. , Contreras Vega G. , López Espinoza R. , Carrillo Ortiz M.G.
Published: March 2022

En los últimos años acceder a los recursos públicos que permitan su sostenibilidad, implica a las universidades públicas demostrar su calidad educativa y cumplir con los indicadores de competitividad establecidos por el Gobierno Federal en los Programas Sectoriales. El logro de la calidad de una institución educativa depende de diversos factores en los que convergen distintos actores, uno de ellos el Rector, máxima autoridad de una universidad. El trabajo propuesto profundiza en el papel del Rector, abordando dos dimensiones de su perfil: la trayectoria académica y su recorrido por la gestión institucional antes de ocupar el cargo, para identificar los atributos del perfil que influyen en la consecución de los indicadores de calidad de la universidad. Se consideró como objeto de estudio a la Universidad Autónoma de Nayarit. Mediante técnicas de minería de datos, se identificaron las características de la trayectoria universitaria de los rectores y se determinaron los atributos del perfil del rector que guardan una correlación directa positiva con el comportamiento de los indicadores de capacidad y competitividad académica. Los resultados muestran algunos patrones cuyo conocimiento evidentemente puede contribuir en la mejora de la gestión universitaria.

In recent years, access to public resources that allow its sustainability, implicates public universities demonstrate their educational quality and comply with the competitiveness indicators established by the Federal Government in the Sectoral Programs. The achievement of the quality of an educational institution depends on several factors in which different actors converge, one of them the Rector, the highest authority of a university. The proposed work deepens in the role of the Rector, addressing two dimensions of his profile: the academic trajectory and his journey through institutional management before taking office, to identify the attributes of the profile that influence the achievement of the quality indicators of University. The Autonomous University of Nayarit was considered as object of study. Using data mining techniques, the characteristics of the university trajectory of the Rectors were identified and the attributes of the Rector's profile that have a direct positive correlation with the behavior of the academic capacity and competitiveness indicators were determined. The results show some patterns whose knowledge can obviously contribute to the improvement of university management.
Uso de técnicas de modelado de procesos de negocios en la ingeniería en computación
Authors: Martínez Aguilar B. , Méndez Guevara L.C.
Published: March 2022

Como una actividad complementaria en la formación de estudiantes de la licenciatura ingeniería en computación de la Universidad Autónoma del Estado de México se ha implementado en la Unidad de Aprendizaje de Análisis de Sistemas, el uso de técnicas de modelado de procesos de negocios para la solución de diversos casos de estudio, mismos que habrán de introducir al estudiante a un nuevo enfoque, que permita mejorar la gestión de análisis, diseño, implementación y determinar estrategias para los procesos adecuados, comprender de forma proactiva las necesidades de su contexto, estableciendo el planteamiento del problema para desarrollar soluciones optimas y comerciales. Consiste en la construcción de diagramas lógicos con una notación estandarizada que permite visualizar el contexto de desarrollo de una propuesta integral de sistemas que incluya: hardware, software, humanware y dataware.

As a complementary activity in the training of undergraduate students in computer engineering from the Autonomous University of the State of Mexico, the use of business process modeling techniques for the solution of computer systems has been implemented in the Systems Analysis Learning Unit various case studies, which will introduce the student to a new approach, which will improve the management of analysis, design, implementation and determine strategies for the appropriate processes, proactively understand the needs of their context, establishing the approach of the problem to develop optimal and commercial solutions. It consists of the construction of logical diagrams with a standardized notation that allows visualizing the development context of a comprehensive system proposal that includes: hardware, software, humanware and dataware.
Implementación de Aula invertida con "hipervideos" en cursos de TI
Authors: Martínez Román Roberto , Cárdenas Anaya Humberto , Campos García Gabriela Azucena , Liceaga Castro Jesús Ulises
Published: March 2022

El uso de recursos tecnológicos para mejorar el proceso de enseñanza-aprendizaje es hoy en día un requisito indispensable debido al enorme volumen de información, entre otras razones, que cada asignatura o curso requiere. Esto requiere no solo un mayor orden de los contenidos de cada tema, sino también una clasificación y formato más detallados. En este artículo, presentamos los resultados iniciales del uso de "hipervideos" en tres cursos diferentes del Departamento de Computación del ITESM-CEM. Mediante encuestas y calificaciones de diferentes grupos, se obtienen conclusiones iniciales de la aplicación de la técnica Aula Invertida a través de "hipervideos".

The use of technological resources to improve the teaching-learning process is nowadays an indispensable requirement due to the enormous volume of information, among other reasons, that each subject or course requires. This involves not only a greater ordering of the contents of each subject, but also a more detailed classification and format. In this article, we present the initial results of the use of "hypervideos" in three different courses of the ITESM-CEM Computing Department. By means of surveys and grades of different groups, the article presents initial conclusions of application of the Flipped Classroom technique through "hypervideos".
Método de esteganografía a través de la dimensión fractal y el algoritmo de LSB; una nueva perspectiva en imágenes RGB
Authors: Caballero Hernández Héctor , Muñoz Jiménez Vianney , Ramos Marco A. , Romero Huertas Marcelo
Published: March 2022

Los métodos de esteganografía actualmente recurren a la combinación de técnicas de ocultamiento de información con el propósito de incrementar la cantidad de datos embebidos en los estego-objetos, así como de reducir la probabilidad de que sean descubiertos los datos por medio de técnicas de estego-análisis, o en su defecto implementar sistemas de criptografía para evitar que se conozca los contenidos de los datos ocultos. En este trabajo se presenta una nueva forma de la aplicación de la teoría fractal a través del cálculo de la dimensión de los fractales, que en combinación con el método LSB aplicado a imágenes RGB permite ofrecer un nivel elevado de seguridad, para garantizar la privacidad de los datos ocultos. En los experimentos ejecutados se observa que la codificación no genera errores en la recuperación de los datos, no presenta deformaciones visuales y satisfacen las métricas de calidad PSNR, MSE, SNR y SIMM.

Steganography methods currently resort the combination of information hiding techniques with the purpose of increasing the amount of data embedded in the stego-objects, as well reducing the probability that the data will be discovered employing steganalysis or failing implement cryptography systems avoid knowing the data contents. In this work, we present a new form of the application of fractal theory through the calculation of the dimension of the fractals that, in combination with the LSB method applied to RGB images, allows offer a high level of security, guaranteeing the privacy of the fractals hidden data. In the executed experiments it is observed that the coding does not generate errors in the recovery of the data, does not present visual deformations and satisfies the quality metrics PSNR, MSE, SNR and SIMM.
Evaluación con Realidad Aumentada: Caso programas del Área de Ciencias Humanas y de la Salud
Authors: Olivares Granados Sergio Agustín , González Reyes Janoé Antonio
Published: March 2022

Las tecnologías han demostrado ser de gran utilidad dentro del aula, herramientas que utilizan Gamificación, Realidad Aumentada y Sistemas de Respuesta permiten al docente innovar en diversas actividades con sus estudiantes creando ambientes de trabajo distintos a los tradicionales. Plickers, siendo una de estas herramientas que aprovechan las bondades de la Realidad Aumentada, es utilizada para evaluar los conocimientos adquiridos en la clase de Informática Aplicada que se imparte en el Instituto Universitario de Ciencias Médicas y Humanísticas de Nayarit, para lo cual se realiza esta investigación que busca conocer la percepción de los estudiantes acerca de diversos aspectos didáctico-pedagógicos y de la implementación de Plickers en el aula.

Technology has proved to be helpful in the classroom, Gamification, Augmented Reality and Classroom Response Systems tools allow the teachers to innovate on several activities for their students creating different work environments to traditional ones. Plickers, being a tool that takes all the advantages that Augmented Reality brings, is used to evaluate the knowledge acquired during Applied Informatics class offered at the Instituto Universitario de Ciencias Médicas y Humanísticas de Nayarit, thus, this research is done to investigate the perception of students about diverse didactical-pedagogical point and Plicker implementation in Classroom.
Autómatas Celulares Aplicados al Comportamiento de Células de Cáncer Cervicouterino
Authors: Muñoz Jiménez Tania , Torres Soto Aurora , Torres Soto María Dolores
Published: March 2022

En este documento se describe el desarrollo e implementación de un modelo para simular computacionalmente la dinámica del crecimiento y migración del cáncer cervicouterino, considerando sus principales características: proliferación, migración y necrosis, así como sus etapas de desarrollo. El modelo se desarrolló mediante un autómata celular con enfoques paralelo y secuencial. El autómata celular se basó en el modelo de Gompertz para simular las etapas de desarrollo de este cáncer, el cual se dividió en tres etapas cada una con diferentes comportamientos durante la simulación. Se realizó un diseño experimental con parámetros de entrada que se seleccionaron a partir de la investigación literaria y su discusión con médicos expertos. Al final del proceso de investigación, se logró obtener un algoritmo computacional de simulación muy bueno comparado con el modelo médico de Gompertz y se encontraron los mejores parámetros para su ejecución mediante un diseño factorial soportado estadísticamente.

This paper describes the development and implementation of a model to computationally simulate the growth and migration dynamics of cervical cancer, considering its main characteristics: proliferation, migration and necrosis, as well as its stages of development. The model was developed by means of a cellular automaton with parallel and sequential approaches. The cellular automaton was based on the model of Gompertz to simulate the stages of development of this cancer, which was divided into three stages, each with different behaviors during the simulation. An experimental design was carried out with input parameters that were selected from literary research and its discussion with expert physicians. At the end of the research process, a very good simulation algorithm was obtained compared to the Gompertz medical model and the best parameters for its execution were found by means of a statistically supported factorial design.
Plataforma Colaborativa de Gestión Académica basada en un Enfoque Constructivista Social
Authors: Sánchez-Gálvez Luz A. , Becerra-Castelan Fernando J. , Hérnandez-Sarmiento Omar , Anzures-García Mario , Fernández-Luna Juan M.
Published: March 2022

Actualmente, las propuestas de desarrollo en el ámbito educativo se centran en el Aprendizaje Colaborativo Soportado por Computadora (Computer Supported Collaborative Learning, CSCL), donde los estudiantes aprenden mediante un proceso de planteamiento y compartición de ideas para la resolución de tareas; beneficiándose con el diálogo y la reflexión de las propuestas de sus compañeros. Esto ha incrementado el uso de CSCL, tales como MOODLE, Blackboard, ILIAS, Edmodo y Schoology. Sin embargo, algunos de éstos suelen tener costo, otros requieren que los administradores tengan conocimientos de programación para adaptarlos a las distintas necesidades de la institución que los utiliza y/o deban ser configurados de forma especial para obtener su máximo provecho. Por consiguiente, en este trabajo de investigación se propone una plataforma colaborativa basada en un enfoque constructivista social que simplifique, agilice y facilite la gestión académica en una institución de educación superior.

Currently, the development proposals in the educational field are focused on Computer Supported Collaborative Learning (CSCL), where students learn through a process of planning and sharing ideas for solving tasks; benefiting from the dialogue and reflection of the propositions of their colleagues. This has increased the use of CSCL, such as MOODLE, Blackboard, ILIAS, Edmodo and Schoology. However, some of these usually have a cost, others require that the administrators have programming knowledge to adapt them to the different needs of the institution that uses them and/or they must be configured in a special way to obtain their maximum advantage. Therefore, in this research work a collaborative platform based on a social constructivist approach, which simplifies, and facilitates academic management in a higher education institution, is proposed.
ALEDO Algoritmo para la detección de objetos
Authors: Vargas Ordoñez Leydi Mercedes , Muñoz Sanabria Luis Freddy , Álvarez Francisco Javier
Published: March 2022

Esta investigación propone un algoritmo para la detección de objetos denominado ALEDO, para ello se hace una revisión en la literatura sobre los algoritmos más usados en estas actividades y se comparan contra ALEDO mediante modelos matemáticos. Se realiza una aplicación móvil usando ALEDO para el reconocimiento de señales de tránsito y basado en el concepto de aprendizaje supervisado. Al verificar la eficacia de ALEDO en la detección de imágenes frente a los algoritmos más usados para el mismo fin, dio como resultado que además de ser eficiente, cumplió con los propósitos para el que fue desarrollado. Es necesario continuar aplicando el algoritmo en otras aplicaciones móviles para la detección de imágenes que permitan solidificar los resultados.

This research proposes an algorithm for the detection of objects called ALEDO, for which a review is made in the literature about the algorithms most used in these activities and they are compared against ALEDO through mathematical models. A mobile application is made using ALEDO for the recognition of traffic signals and based on the concept of supervised learning. When verifying the effectiveness of ALEDO in the detection of images in front of the most used algorithms for the same purpose, it resulted in that besides being efficient, it fulfilled the purposes for which it was developed. It is necessary to continue applying the algorithm in other mobile applications for the detection of images that allow to solidify the results.
Retorno Sobre la Inversión en Proyectos de Software Agiles: Una propuesta pedagógica de ROI-SCRUM
Authors: Cortés Chavarría R.L. , Lizano Madriz F.A.
Published: March 2022

El uso de métricas en el desarrollo de software ha sido pobremente atendido en el contexto académico. En el caso de la métrica para estimar el retorno de la inversión (ROI por sus siglas en Ingles), en el contexto de los proyectos Scrum, es un ejemplo típico de este problema. Es difícil encontrar en la literatura elementos que puedan ayudar al maestro a incorporar este tema en el currículo. Este artículo presenta los resultados preliminares de un proyecto en curso destinado a desarrollar un modelo pedagógico para ROI en un curso de Ingeniería de Sistemas. Este proyecto permitirá al profesor y sus alumnos, el estudio del ROI de forma sistemática e ilustrada.

The use of metrics in software development has been poorly attended in academia. In the case of the metric to estimate the Return on Investment (ROI), in the context of Scrum projects, it is a typical example of this problem. It is difficult to find in the literature elements that can help the teacher to incorporate this topic into the curricula. This article presents the preliminary results of an ongoing project aimed to develop a pedagogical model for ROI in a Systems Engineering course. This project will allow to the teacher and its students, the study ROI in a systematic and illustrated way.
El efecto de la educación en línea contra la educación presencial en el rendimiento escolar de los estudiantes de la unidad de aprendizaje “Programación Estructurada
Authors: Garza González I.L. , Medina Morón E. M.
Published: March 2022

En este trabajo se expondrá la situación que se vivió con los estudiantes y profesores dada la contingencia sanitaria COVID-19 en nuestro País. Como la Universidad Autónoma de Nuevo León realizó cambios disruptivos en el área digital y tecnológica para garantizar la continuidad académica y cumplir con el programa de clase al implementar la modalidad en línea y como esto incremento el rendimiento de los estudiantes de la unidad de aprendizaje: “Programación Estructurada” respecto a la modalidad presencial. El estudio de investigación que se utilizó es explicativo y experimental, en el que se describe el mecanismo que justifica la mejora en el rendimiento. Además, se realiza las pruebas de hipótesis de diferencia del rendimiento. Obteniendo evidencia de una mejora en el rendimiento del desempeño de la modalidad en línea contra la modalidad presencial.

This work will explain the situation that was experienced with students and teachers given the COVID-19 health contingency in our country. As the Autonomous University of Nuevo León made disruptive changes in the digital and technological area to ensure academic continuity and comply with the class program by implementing the online modality and as this increases the performance of students of the learning unit: "Structured Programming" with respect to face-to-face mode. The research study used is explanatory and experimental,describing the mechanism that justifies performance improvement. In addition, the performance differencehypothesis s tests areperformed. Obtaining evidence of an improvement in the performance of the online mode against face-to-face mode.