bluuebunny/crossref_metadata_2025 huggingface dataset:
Organizational and technical level of preparation of shipbuilding and ship repair production and ways to improve it
Authors: Pasheeva T. Yu. , Fatov V. I.
Published: July 2023

A set of problems of a shipbuilding and ship repair plant in terms of production preparation efficiency, focusing on such issues as import substitution, modernization, the introduction of innovative solutions in production, digitalization of production, is studied in the paper. Considerable attention is paid to the real state of the shipbuilding industry, the difficulties it faces, and the prospects for restoring specific positions. A set of issues related to the shipbuilding and ship repair production organization is considered. Attention is paid to the production efficiency, taking into account the fact that the efficiency of shipbuilding and ship repair production in modern Russia is characterized by the development of high-tech science-intensive industries and the introduction of innovative technologies. It is concluded that modern high-tech shipbuilding and ship repair production requires the involvement of significant financial and intellectual resources, and production facilities must be provided with modern, mostly automated production equipment, slipways, docks, boathouses, so it is necessary to take specific measures towards a significant improvement in performance, characterizing the state of fixed production assets. On the example of Onego Shipyard, JSC, the trend towards production modernization and the prospects for production and economic development are shown; it requires significant investment in the technical re-equipment and production modernization, and also contributes to the creation of a new production infrastructure and a significant renewal of fixed assets. Considerable attention should be paid to the issues of a systematic approach to solving the problems of shipbuilding and ship repair production, taking into account the organizational and technical component.
Experimental study of the influence of catamaran parameters on water resistance
Authors: Ushakov K. M. , Yatsuk Yu. V.
Published: July 2023

The advantages of multihulls over monohulls are better running characteristics at high speeds and a larger deck area, which is critical for passenger ships. When designing, it is necessary to choose geometric parameters, which include the distance between the hulls. A brief description of the existing methods for calculating the towing resistance of multihull vessels is provided in the paper. New results of an experimental study of the effect of transverse clearance and the ratio of the one hull width to draft on the resistance of a displacement catamaran are also provided. The studies are carried out by testing a small non-self-propelled model of a multihull vessel in the towing tank. The model length is 1.84 m; the width of one hull is 0.15 m; the draft varies from 0.07 m to 0.11 m. The experiment is carried out in the towing tank of the Admiral Makarov State University of Maritime and Inland Shipping. The results are processed according to the Froude method without taking into account dynamic heel and they are presented as a dependence of the residual resistance coefficients on the Froude number. By approximating the experimental data, an expression allowing evaluating the influence of these parameters on the value of the residual resistance in the range of Froude numbers 0.30–0.70 is obtained. One hull is also tested at two draft values in the same speed range. These data are not approximated, but they are presented in the paper in the form of experimentally obtained points. The results of the work can be used at the initial stages of designing catamarans and at studying the influence of these factors on the residual resistance.
Thermal efficiency of environmentally friendly closed cooling systems of marine power plants
Authors: Fedorovskiy K. Yu. , Grinenko N. K.
Published: July 2023

The issues of heat removal efficiency of cladding heat exchangers of closed cooling systems of ship power plants are considered. The use of such systems allows obtaining technical and environmental advantages in the operation of the vessel. The latter ensures the conservation of fish resources of the seas and continental waters. It is shown that the worst conditions for heat removal take place when the vessel is parked. In this case, heat transfer to outboard water is carried out with free convection. This mode is the main calculation mode. In the case of vessel movement, heat removal increases significantly, since it is carried out with forced convection. For the case of the ship berthing, the results of experimental thermal engineering studies on a model of 1m2 are presented. It is shown that the efficiency of heat removal significantly depends on the orientation of the ship’s plating of the temperature difference in the apparatus. The transition from the bottom location of the apparatus to the side, as well as an increase in the temperature difference, provide greater thermal efficiency. Generalizing similarity equations are obtained for the case of the ship berthing. Based on them, a method for the calculation has been developed. The reliability of this technique is fully confirmed by the results of testing such a heat exchanger, with an area of 100 m2, on a self-propelled floating crane of project 15201. It is shown that the obtained generalizing similarity equations have their own characteristics compared to the known ones. This is a consequence of the peculiarities of the processes taking place in such devices. For the case of vessel movement, generalizing similarity equations are also obtained. In this case, the authors have used the results of their own tests of such devices on the floating crane of project 15201, as well as the tests results of other researchers on various ships.
Planning and control of the ship curvilinear route
Authors: Vas’kov A. S. , Mironenko A. A.
Published: July 2023

The possibility of applying the traditional navigation parameters used in pilotage (bearing and distance), as well as their sum and difference for planning and controlling the ship curvilinear route in coastal waters is being investigated. Mathematical apparatus is based on the classical navigation methods such as the theory of isolines, the lines of position, the principles of route planning, as well as the approximation of the curvilinear route. The mathematical justification of the circle arcs, ellipse and hyperbola used as the approximation lines of both the ship curvilinear route and the control isolines is given. The methods for estimating the vessel approaching to the point of the beginning and end of the turn and for controlling the ship movement along the planned path by measuring the navigational parameters are proposed. The problems of the physical and mathematical feasibility of the route arising at the junction points of the straight and curvilinear parts of the ship route are recommended to be resolved on the principles of transition curves (clothoids), considering the maneuvering characteristics of the vessel. The main theses of the research are supported by the graphical interpretation while the given expressions are ready for practical application. The formalization of the proposed methods in both automatic navigation systems and autonomous ship control systems will allow the navigator on the bases of the configuration of the relative position of landmarks and the ship curvilinear route to solve the problems of processing relevant navigation information in coastal and congested waters more efficiently in conjunction with the traditional pilotage methods, which is especially important for advanced autonomous navigation.
Acoustic Characteristics and Voice Fatigue in Hearing Impared Adult Males according to the Degree of Hearing Loss
Authors: Lee Dong Hoon , Huh Myung Jin
Published: July 2023

This study was conducted to use it as basic information to suggest the necessity and program for self-regulation that can properly maintain voice according to the degree of hearing loss. For this purpose, twenty-six men in their fifties were classified according to the degree of hearing loss, and multidimensional voice program (MDVP) (F0, jitter, shimmer, noise to harmonics ratio [NHR]), cepstrum (cepstral peak prominence [CPP], low/high spectral ratio [L/H ratio], mean CPP F0, cepstral/spectral index of dysphonia [CSID]) and vocal fatigue index (fatigue, physical, rest, total) were performed and analyzed. The more severe the degree of hearing loss, the higher the F0 and CSID, and the lower the L/H ratio, the overall quality of the voice deteriorated. Normal-mild hearing loss group indicated a positive correlation between mean CPP F0 and fatigue, rest and total, and negative correlation between CPP and rest. In severe-profound group, F0 and rest showed a negative correlation, and shimmer and rest showed a positive correlation. Through the analysis of vowel and connected speech, it was found that the more severe the degree of hearing loss, the higher the F0 in vowel phonation, the lower the L/H ratio and the higher the CSID, and the lower the overall sound quality. In addition, it was observed that that the more severe the hearing loss, the higher the fatigue level of the hearing-loss person who speaks due to severe voice misuse and abuse. Therefore, auditory rehabilitation patients with hearing loss optimal voice production, and voice rehabilitation programs that use proper voices should be supported.
Influence of mechanical deformation on magnetic properties and magnetocaloric effect in Gd films
Authors: Kashin S. N.  , Koplak O. V.  , Valeev R. A.  , Piskorskii V. P.  , Burkanov M. V.  , Morgunov R. B.
Published: July 2023

In W/Gd/W/MgO heterostructures, the dependence of mechanical stresses in the Gd film on the crystallographic orientation of the MgO substrate was revealed. Variations in the interplanar spacings in MgO in different orientations create tensile elastic stresses up to 0.22 GPa in the Gd film, which are transferred through the damping layer W. It is found that these stresses affect the isothermal magnetization curves, the corresponding change in the magnetic part of the entropy at the Curie point T_c=293 K, and the relative cooling capacity (RCP). This allows us to consider mechanical stresses as a factor in controlling the magnetocaloric cycle, which increases the efficiency of the refrigeration machine, when mechanical loading is synchronized with the heating-cooling cycles of the ferromagnet. Keywords: magnetocaloric effect, entropy, microdeformations, microstresses.
Magnetization reorientation of GdFeCo/Ir/GdFeCo heterostructures at critical temperatures
Authors: Bakhmetiev M. V.  , Burkanov M.V.  , Valeev R.A.  , Piskorskii V.P.  , Morgunov R.B.
Published: July 2023

In GdFeCo/Ir/GdFeCo heterostructures with amorphous GdFeCo layers, three critical points were found in the temperature dependences of the magnetization. In the neighborhood of 100 K, the temperature of compensation for the magnetizations of the Gd and FeCo sublattices is observed, which is found in the form of a magnetization minimum and does not depend on the magnetic field. As the temperature decreases, a sharp stepwise transition is observed, which corresponds to the switching of the mutual magnetization's orientation of the GdFeCo layers between their parallel and antiparallel configurations. This transition depends on the magnetic field in which the measurement is made. Its critical temperature shifts in the range of 70-300 K with a change in the field in the range of 0.5-5 T. At low temperatures <50 K, a transition to the spin glass state is observed, which is accompanied by a decrease in the magnetic moment to zero and disappears when the field is applied. Keywords: Compensation temperature, synthetic ferrimagnet, exchange interaction, magnetic anisotropy.
Optical spectroscopy of thin zinc oxide films doped with copper
Authors: Avanesyan V. T.  , A.B. Zharkoy A. B.  , Sychov M. M.  , Eruzin A. A.
Published: July 2023

The results of a comparative study of the optical properties of the thin films of zinc oxide ZnO, taking into account the influence of their copper doping, are presented. Using the experimental spectra of optical transmission, spectral dependences of the refractive and extinction index of the studied material, as well as components of complex dielectric permittivity constant, were calculated. The revealed features of the obtained dispersion curves are associated with the behavior of the impurity injected into the ZnO matrix. Keywords: zinc oxide, optical transmission, refractive index, dielectric permittivity.
Micromechanism of plastic deformation enhancement in ultrafine-grained Al-Cu-Zr alloy after annealing and additional deformation
Authors: Gutkin M.Yu.  , Orlova T.S.  , Skiba N.V.
Published: July 2023

A theoretical model which describes a micromechanism of plasticity enhancement in an ultrafine-grained Al-Cu-Zr alloy after annealing and additional deformation is suggested. Within the framework of the model, it was shown that nanoprecipitates of the secondary phase Al2Cu in the grain boundaries become the effective sources of the lattice dislocations in the presence of a large number of the grain boundary dislocations near the nanoprecipitates. The theoretical dependences of the flow stress on the degree of the plastic deformation demonstrate good qualitative and quantitative agreement with the experimental data. The emission of the lattice dislocations from nanoprecipitates provides higher plasticity compared to the emission of the lattice dislocations from the triple junctions of the grain boundaries. Keywords: ultrafine-grained materials, aluminum alloys, nanoprecipitates, annealing, severe plastic deformation by high-pressure torsion, dislocations, grain boundaries.
Community Empowerment in Transforming Household and Agricultural Waste into Valuable Products towards the Green Village Concept
Authors: Nugrahini Arita Dewi , Ainuri Makhmudun , Wagiman Wagiman , Amalia Rosa , Hasanati Surani
Published: July 2023

It is essential to manage waste in an integrated manner, beginning at the domestic and village levels. In fact, there are still a significant number of residents who throw trash carelessly. Jurangjero village, a village in Klaten Regency, Central Java, is an example of a village that does not adequately manage its waste. In addition, the village has agricultural waste issues that require optimal utilization, including rice straw. This community service program aims to increase public awareness of organic and inorganic domestic waste management and agricultural waste management so that they can be applied appropriately to the concept of the green village. The program’s methods included field observations, waste management outreach, and training. The training included the creation of organic fertilizers, eco-bricks, plastic waste containers, and straw paper. Farmer groups and farmer women’s groups have gained an understanding of the management of domestic organic waste into organic fertilizer and compost as a result of the outreach and training activities. Karangtaruna has also gained an understanding of inorganic waste management by applying the recycling concept, which entails transforming plastic refuse into plastic pots and ecobricks. They have also grasped the production of economically valuable art paper from rice stalks. The descriptive analysis revealed that the average pre-test and posttest scores were 55.58 and 76.67, respectively. Based on these findings, it can be concluded that this community service program has increased residents’ knowledge of managing domestic and agricultural waste to create valuable products. The support of the village administration is required for sustainable waste management and the continuation of empowerment initiatives.
Empowerment and Development of Kajhu Village as a Disaster Resilient Village Based on Fasterization and Ecotourism
Authors: Hanif Hasnan , Maulida Adelia , Kamal Maulana , Oktari Rina Suryani
Published: July 2023

Kajhu Village is a coastal area within the Baitussalam District of Aceh Besar. In 2004, the village suffered significant damage due to an earthquake and ensuing tsunami, resulting in loss of life and damage to infrastructure. Despite the inherent disaster risk, Kajhu Village possesses great potential, including the scenic beauty of its coastline and the abundance of mangrove ecosystems. These natural resources can be harnessed to develop environmental and disaster-based tourism opportunities. In recognition of this potential, the Fasilitator Tangguh Bencana (FASTANA) - Tsunami and Disaster Mitigation Research Center at Universitas Syiah Kuala (TDMRC USK), an organization dedicated to community service and disaster mitigation, launched a disaster risk reduction program aimed at empowering the community and reducing the risk of disaster in Kajhu Village. Data collection involved observation and interviews with local residents. Community service activities focused on education and empowerment, including disaster preparedness education for the community and schools, promotion of the importance of protecting coastal ecosystems, and training and empowering the creative economy. Additionally, disaster literacy corners were established in schools within Kajhu Village. Through these programs, the goal was to create a community that is resilient to disaster and economically self-sufficient. By providing support and empowerment to the community, it is hoped that a new mindset can be fostered, resulting in greater independence and resilience. The disaster education provided aims to help individuals and families understand and implement effective disaster prevention strategies. The implications of the community service program in Kajhu Village are increasing community resilience and preparedness in dealing with natural disasters and developing the potential of coastal ecosystems to become sustainable ecotourism attractions, providing inspiration for communities in other areas to adopt a participatory and structured approach in an effort to increase resilience and disaster preparedness and developing the potential of coastal ecosystems.
The Architectural Path of Collaborative Management in Performing Arts Organizations
Authors: Zhang Ruiwen
Published: July 2023

Under the background of the new era, performing arts organizations have become a cornerstone force in promoting the high-quality development of China’s culture. “How to explore the development models and general rules that promote internal and external collaborative management within organizations?” and “How to achieve dynamic balance within organizations with diverse collaborative models?” These are all crucial questions that managers of performing arts organizations should consider in this era. Based on positioning theory and the logical perspective of organizational structuring functional types, this article proposes a “three-step” development strategy for the internal and external collaborative management of performing arts organizations from the value logic of arts management and the research perspective of history. The article also establishes an evaluation system for the internal and external collaborative management of performing arts organizations using the DEA method and explores the full-process management architecture of integrated collaboration within and outside performing arts organizations. The aim is to provide theoretical support for the collaborative innovation and high-quality development of performing arts organization management.
A Study of Chinese Students’ Media Dependence on Douyin in Malaysia
Authors: Duo Xu , Ibrahim Faridah
Published: July 2023

This paper uses the “Media System Dependency Theory” proposed by American communication scholars Paul Rockich and Melvin DeFleur as a research framework to investigate the deep-seated reasons for the dependence of Chinese international students on Jitterbug in social media, and to propose countermeasures. Overseas students are an important force for the great rejuvenation of the Chinese nation, and their values will influence the values of the whole society in the future. The international students are in the period of value formation and cognition, so it is very important to grasp the cognition formation in this period. With the advent of the mobile Internet era, short video social media, represented by Jitterbug, has become one of the most popular leisure and entertainment platforms for international students. However, while Jitterbug has brought rich experiences to young people, some negative effects have come along with it. Many international students seem to be inseparable from Jitterbug, gradually developing into a strongly sticky “relationship chimera”. It can be said that tens of thousands of international students not only cannot leave Jitterbug, but also gradually develop a kind of “dependency syndrome”—spending a lot of time and energy indulging in it, experiencing negative effects such as reduced attention span and indifferent interpersonal communication, and becoming doubly dependent on Jitterbug in terms of emotion and behavior. This study aims to examine the effects of the dual dependence on Jitterbug. Therefore, this study hopes to analyze the dependence of international students on Jitterbug as a social media and propose countermeasures to improve the media literacy of international students.
The English Translation Methods of Chinese Characteristic Vocabulary in the Report of the 20th National Congress of the Communist Party of China
Authors: Wang Xuerong
Published: July 2023

Since China’s commitment to reform, opening up, and modern socialist construction, it has made remarkable achievements in various aspects such as politics, economy, and culture that have impressed the world. Western countries are also more willing to listen to and understand China’s development achievements, and recognize and support China’s international standing. Chinese leaders’ dialogues or foreign policy documents related to political activities are the main source of information about China’s development for foreign countries. Among them, the report of the 20th CPC National Congress is the summary report of the CPC every five years, covering a wide range of political, economic, social and cultural fields, and has an extremely important political status. Therefore, the English translation method of words with Chinese characteristics in the report of the 20th National Congress of the Communist Party of China is a very important issue, as these words play an important role in international communication and cooperation. When translating these words, we need to consider their special cultural background, historical origins, and semantic connotations to ensure the accuracy and completeness of the translation.
A Study on the Low-Carbon Transformation Path of Sinopec Group Based on ESG Principles
Authors: Tang Zisheng
Published: July 2023

This study examines the low-carbon transformation path of the petrochemical industry based on Environmental, Social, and Governance (ESG) principles, taking China Petrochemical Corporation (Sinopec Group) as a case study. The research first analyzes the year-on-year carbon emissions of the petrochemical industry. Subsequently, addressing the deficiencies in Sinopec Group’s low-carbon transformation path, a series of recommendations are proposed: in terms of information disclosure, the study advocates for improvements in ESG reporting and transparency to enhance corporate governance and social impact. In the strategic aspect, the research suggests that Sinopec Group actively promotes sustainable procurement and green supply chain development, collaborating with partners to drive low-carbon transformation. This study aims to identify shortcomings and provide recommendations for the current low-carbon transformation path of China Petrochemical Corporation, serving as a reference for Sinopec Group and other enterprises within the industry.
Patentes como indicador de capacidades para la universidad emprendedora: el caso del IPN
Authors: Oliver Espinoza Rubén , Estrella Santiago Diana Priscila , Arroyo-Cortez Rigoberto
Published: July 2023

Objetivo: identificar la capacidad de emprendimiento del Instituto Politécnico Nacional a través del registro de patentes.
Diseño metodológico: se identifican campos de conocimiento y unidades académicas involucradas en invenciones patentadas a partir de indicadores de centralidad de redes. A los indicadores se aplica análisis de componentes principales, para luego conglomerar y jerarquizar los campos y las unidades.
Resultados: los métodos multivariantes aplicados en el trabajo resultan funcionales para sistematizar y ordenar indicadores de redes, los que fueron útiles para diferenciar el peso e importancia de los campos de conocimiento y las unidades académicas relacionadas con el patentamiento. De ello se desprenden algunas implicaciones relacionadas con la vertiente emprendedora del ipn, que abren líneas de investigación sobre transferencia y gestión del conocimiento.
Limitaciones de la investigación: la patente es un activo potencialmente comercializable. Pero de la revisión del acervo de patentes no se colige directamente emprendimiento, aunque es uno de los indicadores relevantes de la universidad emprendedora, en el entendido de que ésta tiene por misión la comercialización del conocimiento que genera.
Hallazgos: se identifica que los campos de conocimiento más relevantes para la actividad inventiva corresponden a tecnologías que en el ámbito de la organización académica del ipn corresponden a las ciencias médico-biológicas, como farmacéutica, biotecnología y salud, y se concentra en relativamente pocas unidades académicas. Inversamente, la actividad de patentamiento en las ingenierías y ciencias físico-matemáticas se concentra en menos campos de conocimiento, pero concita una participación más diversificada entre unidades académicas.
¿Por qué debemos registrar los protocolos de ensayos clínicos y revisiones sistemáticas?
Authors: Mendoza-Núñez Víctor Manuel
Published: July 2023

El protocolo de investigación se refiere a los apartados, secciones y lineamientos lógicos y ordenados a los que se debe apegar el investigador para dar respuesta a una pregunta de investigación científica. No existe un protocolo único (estándar) para todas las ciencias y disciplinas, por lo que los comités de investigación de universidades, organizaciones académicas y científicas establecen los elementos y características que deben contener cada uno de los apartados que integran el protocolo establecido. En este sentido, aunque no exista una sola versión de protocolo, todas las propuestas se apegan el método científico, considerando las características y enfoque de cada ciencia y disciplina, con el propósito de que sea reproducible. Los protocolos, sobre todo los de ensayos clínicos y revisiones sistemáticas deben ser registrados en una plataforma de acceso libre antes de iniciar los estudios, con el propósito de fomentar la trasparencia de los métodos, evitar los sesgos, disminuir la posibilidad de la duplicidad de estudios, además de permitir la revisión “por pares” del plan de la investigación. En este marco, el propósito de esta editorial es aproximar a los estudiantes de pregrado y posgrado, así como a los profesores e investigadores en formación a las diferentes opciones de plataformas, para que registren sus protocolos antes de iniciar su investigación.
Diagnóstico de cáncer oral en la zona anterior de la rama mandibular en un adulto mayor. Caso clínico.
Authors: Argumedo-Pizaña Yesenia Celeste , Perea-Ortega Leslie Marlene , Sánchez-Nieto José Miguel
Published: July 2023

Introducción. El cáncer en la cavidad oral es poco frecuente en México, sin embargo, su prevalencia es significativamente mayor en la vejez y produce graves consecuencias para el paciente y su entorno. El tipo más frecuente es el carcinoma de células escamosas, otros tipos menos frecuentes son los melanomas, linfomas y de glándulas salivales. Las consecuencias de este padecimiento son menores si se realiza un diagnóstico oportuno, sin embargo, si el cáncer es muy agresivo puede ocasionar el fallecimiento del paciente.
Por lo anterior el objetivo de este trabajo es presentar un caso clínico de un adulto mayor diagnosticado de cáncer oral en la zona anterior de la rama mandibular. Caso clínico. Paciente masculino de 83 años de edad, quien presenta un presenta aumento de volumen de tejido gingival adyacente al diente 38, indurado, con aumento de temperatura y rubicundez, con limitación de la apertura bucal y nódulos submandibulares y cervicales externos del mismo lado. Se diagnóstico pericoronitis y se procedió a extraer del diente. Durante la cirugía se observó una masa firme, se realizó biopsia excisional para estudio histopatológico que reportó tumor maligno de estirpe
epitelial de origen a determinar y se sugirió realizar biopsia intraósea y panel de inmunohistoquímica para hacer el diagnóstico diferencial entre cáncer mucoepidermoide y carcinoma intraóseo primario de células escamosas. Lamentablemente el paciente falleció un mes después de la entrega del resultado histopatológico y no fue posible realizar la segunda biopsia. Conclusión. Es fundamental
la valoración bucodental periódica, por lo menos una vez cada seis meses, para profilaxis, detección y tratamiento oportuno de enfermedad periodontal y neoplasias, para evitar complicaciones letales como el caso clínico reportado.
Intervención y necesidades de formación de los fisioterapeutas durante la pandemia de COVID-19 en México
Authors: Peñaloza-Ochoa Laura , Tejeda-Castellanos Xochiquetzalli , Gutiérrez-Camacho Claudia , Alaniz-Arcos José Luis , Brito- Suárez Juliette Marie , Pérez-Ledesma María Dayana , Cañete- Avellaneda José Antonio , Morales-Aguirre Martha Liliana , Sánchez-Medina Carlos Maximiliano
Published: July 2023

Introducción: En el confinamiento durante la pandemia por COVID-19, los sistemas de salud tuvieron que reorganizarse de manera rápida y eficiente para la atención de estos pacientes. Asimismo, la participación de los fisioterapeutas fue esencial en el tratamiento y rehabilitación pulmonar de los pacientes con COVID-19; sin embargo, existen pocos fisioterapeutas en México con especialidad en terapia respiratoria.

Objetivo: Describir los sistemas corporales a los que se enfocaron las intervenciones en el manejo de pacientes con COVID-19 por parte de los fisioterapeutas mexicanos, así como sus necesidades de formación.

Método: Se realizó una encuesta a fisioterapeutas con licenciatura y que laboraban en los ámbitos público y privado en el periodo de confinamiento comprendido entre junio y septiembre del 2021. Los fisioterapeutas fueron invitados a través de Facebook y la página web oficial de la Licenciatura en Fisioterapia. Para conocer la consistencia interna de la encuesta calculamos el alfa de Cronbach, la cual resultó de 0.76, basado en elementos estandarizados. La encuesta incluyó preguntas relacionadas con los sistemas corporales hacia los que enfocaron sus intervenciones y las necesidades de formación para tratar pacientes con COVID-19.

Resultados: Un total de 312 fisioterapeutas participaron en la encuesta, de los cuales 112 participaron en la atención de pacientes con COVID-19, cuyas intervenciones se enfocaron principalmente al sistema musculoesquelético y cardiorrespiratorio. El domicilio del paciente y la unidad de cuidados intensivos fueron los lugares donde más frecuentemente atendieron pacientes; 76.2% de los participantes reportaron la necesidad de conocimiento especializado y más de la mitad se basó su tratamiento en las guías de práctica clínica.

Conclusiones: Los fisioterapeutas mexicanos se enfocaron principalmente en los sistemas musculoesquelético y respiratorio, durante la atención de los pacientes con COVID-19, y expresaron la necesidad de tener una formación especializada en el área respiratoria.
Factores relacionados a la elección de residencias médicas que reproducen las desigualdades en la distribución de especialistas en Argentina
Authors: Silberman Pedro , Silberman Martin
Published: July 2023

Introducción: La distribución de médicos/as en Argentina es desigual, lo cual genera un impacto sanitario. El sistema de residencias médicas habilita la elección de especialidad y dónde realizarla, lo que predice la distribución futura.

Objetivo: Identificar factores relacionados a la elección de residencias médicas en Argentina, considerando las necesidades sanitarias para el año 2020.

Método: Trabajo descriptivo, transversal y analítico. La fuente de información fue el Ministerio de Salud. Se categorizó el tipo de universidad en públicas, privadas y extranjeras. Según necesidades sanitarias se consideraron especialidades priorizadas: clínica, medicina general, pediatría y ginecología, UTI adultos y pediátrico, emergentología y neonatología y no priorizadas, por exclusión de las anteriores. Las localizaciones geográficas fueron: grandes y pequeñas ciudades, de acuerdo al Instituto Geográfico Nacional. Para el análisis se obtuvieron t de Student y chi cuadrado, considerándose significativa p menor a 0.05. Se utilizó software estadístico Statistical Package for Social Science for Windows v28.

Resultados: La mayoría de egresados/as provinieron de universidades públicas (54.7%), luego extranjeras (29.8%) y finalmente las privadas. Eligieron especialidades no priorizadas el 47.9% de públicas, 58.4% de privadas, y extranjeras un 70.5%. Los de universidades públicas eligieron mayoritariamente básicas (40.1% vs 27.2% las privadas y 21.6% las extranjeras). Los/as aspirantes de ciudades pequeñas (13.9%), eligieron no priorizadas (53.8%). Las residencias básicas en ciudades pequeñas tuvieron una ocupación menor (42.3% vs 82.3%), no así en especialidades no priorizadas (85.5% vs 94.5%). 

Discusión: La elección de especialidades es mayoritariamente no priorizada. El sistema absorbió profesionales desde las pequeñas a las grandes ciudades y a las especialidades no priorizadas.

Conclusiones: El tipo de universidad y el tipo de ciudad donde funcionan las residencias condicionan la elección de la especialidad y no la priorización sanitaria.
Modalidades virtuales de aprendizaje en Odontología: Revisión sistemática
Authors: Guzmán Andrea Espinoza , Ramírez Trujillo María De los Ángeles , Villanueva Vilchis María Del Carmen , Sánchez Vázquez Alan , Muñoz García Sandra Paola
Published: July 2023

Introducción: La formación odontológica integral pasó por un proceso importante de transformación a partir de la contingencia por COVID-19. Los llamados entornos virtuales (EVA), modalidades a distancia y la educación remota de emergencia (ERE) tuvieron un gran impacto y efectividad en la educación.

Objetivo: Determinar la efectividad de tres modalidades virtuales de aprendizaje (e-learning, b-learning y m-learning) en los conocimientos teórico-prácticos y práctica clínica en odontología a través de una revisión sistemática de la literatura científica utilizando la estrategia PICO en bases de datos electrónicas.

Método: El proceso de selección de estudios se llevó a cabo de acuerdo con las directrices Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA). Se llevó a cabo la búsqueda por dos integrantes del equipo durante diciembre de 2021 en las bases de datos PubMed y Web of Science. Se incluyeron artículos de hasta 10 años de antigüedad, cuanti y cualitativos, en inglés, con resultados de la evaluación de conocimiento teórico-práctico y práctica clínica y cuya población de estudio fueran estudiantes de odontología.

Resultados: Se obtuvo un total de 422 estudios, 12 cumplieron con los criterios de inclusión y trabajaron con las modalidades e-learning y b-learning, de los cuales cinco sobre e-learning y dos sobre b-learning mejoraron los conocimientos teórico-prácticos, mientras que dos sobre b-learning mejoraron la práctica clínica. No se obtuvieron artículos que evaluaran la modalidad m-learning.

Conclusión: La modalidad e-learning fue efectiva para el mejoramiento de los conocimientos teórico-clínicos, mientras que b-learning fue más efectiva para el desarrollo de la práctica clínica.
Extraction of Water from Thin Air
Authors: Mathew Samuel Elsa
Published: July 2023

Abstract: Two-thirds of the worldwide populace (four billion people)stay under situations of excessive water shortage. In many regions, means for water are being run down quicker than they may be renewed. But even today at any given time, the surroundings carries 3400 trillion tons of water vapor, which could be sufficient to cowl the whole Earth in one inch of water.In order to take advantage of this, an Atmospheric Water Generator (AWG) that is a tool that could convert atmospheric moisture directly into usable or even drinkable water has been advanced. This project focuses on enhancing the efficacy of a present AWG through 20%. The layout will allow extraction of 1.2 liters of water per hour with low energy consumption. The parameters and dimensions for the project have been acquired through the existing setup and the layout of improved setup was obtained through rigorous studies and iterative theoretical calculations. The evaluation of AWG focuses on the flow and thermal conditions that it is subjected to and was executed on ANSYS Fluent.
impact strength of composite with Abaća (Musa textilis) fiber
Authors: Akbar Muhammad Alif , Hendaryati Heni , Mamungkas Mohamad Irkham
Published: July 2023

Materials are growing day by day, one of the most widely used materials is composite material, a composite is a material formed from a mixture of two or more forming materials through an inhomogeneous mixture, where the mechanical properties of each forming material are different. The focus of this research is to utilize abaca fiber to be used as a composite material using a polyester matrix. The manufacturing method used is the vacuum infusion method. The purpose of this study was to determine the impact strength of composites with chopped and intact banana fiber filler with a weight fraction of 10%, 20% and 30%. The highest impact value in this study obtained an average impact value of 0.523 Joule/mm2 at 30% weight fraction variation with chopped fiber, while the lowest value got an average impact value of 0.071 Joule/mm2 at 30% weight fraction with intact fiber. This shows that the 2 variations in weight and shape of the fiber with abaca fiber filler based on this research affect the value of impact strength.
Prototype of the chopping machine for the fronds and leaves of oil palms
Authors: Susilo Bayu , Nurrohkayati Anis Siti , Pranoto Sigiet Haryo , Nugroho Andi
Published: July 2023

Oil palm waste is the residue from the main product of the oil palm tree that is not utilized. Oil palm can produce solid waste in the form of stems, empty fruit bunches, shells, fiber (coir), and fronds. One oil palm tree can produce 40 to 50 fronds within one year. Oil palm fronds are obtained from the rest of the crop and when caring for the tree. This research aims to make and test a prototype chopper machine to utilize and reduce the waste of palm fronds and leaves. The driving motor on this prototype uses a 2 hp electric motor with 1450 rpm rotation, pulley 1, which is on a 4-inch electric motor, and pulley 2, which is on a 6-inch blade shaft, so there are 2 v-belts used with a size B-55. Calculations made during the design process of the prototype counter machine for palm fronds and leaves are Circumferential Speed of Pully, Circumferential Force of Pully, Belt Tension, Maximum Belt Tension, Number of Belt Rotations, Number of Belts, Belt Age and calculation of speed and torque on the blade shaft. The chopped ingredients are fresh or wet palm fronds and leaves. The count produced by the prototype is 206 kg/hour with an average of 5 repetitions. For prototype yield, the average yield produced from 5 replications was 94.41%, and the resulting chopped results were 20-40 mm long.
Effect of depth of cut (DOC) and degree of serrations (DOS) on surface roughness of aluminum 6061
Authors: Sukroni Muhammad , Hendaryati Heni , Aisyah Iis Siti
Published: July 2023

This study aims to determine the variation of the depth of cut (DOC) on the surface roughness and serration gram (DOS) in the 6061 aluminum turning process using medium speed. In this study the infeed depths used were 0.5 mm, 1 mm, 1.5 mm, and 2 mm by testing the surface roughness using a roughness tester, and testing the teeth gram (DOS) using the SEM (Scaning Electron Microscope) tester. The value of surface roughness (surface roughness) in relation to the depth of cut (DOC) in 6061 aluminum material using a conventional lathe has increased, while the value of the dentition gram (DOS) to the depth of cut (DOC) in the aluminum 6061 lathe process at a depth of 0.5 mm figure shows the percentage of DOS 31.8 percent then continues to decrease with increasing depth of ingestion on the lathe. Based on the research results, the increase in the surface roughness value was due to heat generation which resulted in damage to the chisel resulting in high surface roughness. In addition, variations in the depth of cut gave a negative effect by showing a decrease in the number of serrations in grams, which made it difficult to break and would result in eye damage. chisel
DISPOSABLE LENSES IN SATISFIED REUSABLE SOFT CONTACT LENS WEARERS
Authors: Fogt Jennifer Swingle , Menner Abigail , Patton Kimberly
Published: July 2023

Purpose: Soft contact lens wearers are often prescribed the same lens material and modality for multiple years if patients express satisfaction and no significant problems with lens fit or ocular health are noted upon evaluation. Despite their satisfaction, other lenses may exist that could provide additional health orconvenience benefits and a satisfied lens wear experience.Methods: In this study, wearers of a specific monthly replacement lens brand (comfilcon A) were recruited for an open-label study. The habitual contact lens prescription was optimized for 2 weeks of wear, and participants confirmed that they were satisfied with their habitual lenses before being refit with daily disposable lenses (verofilcon A). Participants responded to visual analog scale (VAS) survey about their initial impressions of the lenses. After 2 weeks of lens wear, participants completed a final study visit and completed surveys about lens wear experiences with the daily disposable study lenses.Results: Fifteen male and 15 female participants completed the study. Median (IQR) binocular LogMAR visual acuity was –0.20(0.12), equivalent to 20/12.5 Snellen acuity. Initial impression surveys revealed a median (interquartile range) of 92.5(22.3) for quality of vision; 95.0(19.3) for comfort; and 91.5(19.3) for satisfaction. At the final visit, median scores for EOD quality of vision was 86.5(24.0); EOD comfort was 84.5(30.3), and EOD dryness 25.5 (47.0). Median overall VAS scores were 92.5(16.0) for vision; 88.0(18.3) for comfort, and 17.5(25.8) for dryness. Median satisfaction with the study lenses was scored 9(2.8) on a 1-10 scale.Conclusions: In this study, satisfied wearers of comfilcon A reusable lens were refit with verofilcon A daily disposable lenses and showed high satisfaction scores with the new lenses, showing that refitting these patients can allow patients to have lenses with more frequent replacement and maintain satisfaction with daily lens wear.
Characteristics of exocentric nominal compounds in Berom: A semantic view of the noun-verb agentive mwat tabak and mwat ha
Authors: Marcus Pam , Yap Teng Teng
Published: July 2023

Nominal compounds, which are very productive in Berom, are formed by combining the noun and verb constituents. The NV compounds are interpreted as the agent, location, or instrument based on the meaning of the existing nominal constituent. This study analyses the semantics of two types of Berom agentive compounds: mwat tabak ‘preacher, [literally, person shoot]’ and mwat ha ‘speaker, [literally, person talk]’. First, both words are realized from the NV structure and the agentive meaning of the compounds is derived from the interpretation of an unspecified N [mwat] that performs the action which is apparently expressed by the V constituent in mwat ha and an action that is not expressed by the V constituent in mwat tabak. Secondly, the two compounds lack the deverbal suffix such as the English -er that is usually attached to agentive nouns and as such they are both treated as compounds with different semantic realizations. The analyses show that the two constructions vary significantly not only in terms of semantics, but also in their specific role and interpretation of the action expressed by the verbal constituent. We argued that the agent nouns in the compounds employ diverse prosodic features such as tone and pitch, in the activity that the compound revealed. Consequently, we conclude that the meaning of agentive compounds in Berom may not necessarily be determined by the structural and semantic property of the compound but by the interaction between the constituents and the relevant context of usage.
A study of number marking in Izere nouns
Authors: Erin Adewumi Anthony
Published: July 2023

This research descriptively examines number marking in Izere nouns, using morpholexical rules as proposed by Lieber (1980). In essence, it describes noun inflections for number from base forms in Izere, with the aid of these rules. Data for the research were collected in Fobur, Jos East Local Government Area of Plateau State, using selected nouns from the Ibadan wordlist of 400 basic items, alongside an adapted list of nouns specifically designed for the research. The selected nouns were collected electronically and then transcribed in a way that identified the inflected noun forms from the base ones. The data were then analyzed qualitatively. Morpholexical rules were also proposed to account for morphological changes in the inflected forms of these nouns. The research findings indicate that affixation, tone pattern change and suppletion are the dominant morphological processes that account for noun inflections for number in Izere.
Seguimiento de las trayectorias vocacionales de las personas graduadas durante 2016-2021 de la Universidad Veritas desde la teoría de construcción de carrera y diseño de vida
Authors: Bulgarelli Bolaños Raquel
Published: July 2023

El presente artículo es resultado del seguimiento de las trayectorias vocacionales de las personas graduadas durante el 2016-2021 de la Universidad Veritas, el objetivo general fue describir la trayectoria vocacional de esta población, desde la teoría de construcción de carrera y diseño de vida. La metodología fue desde un enfoque cuantitativo y un diseño transversal de tipo descriptivo, la muestra fue probabilística estratificada por asignación proporcional (n=480) y se utilizó como instrumento un formulario digital. Los resultados indican que, de la muestra, la mayoría se encontraba en condición de rezago al momento de la graduación, la media del rendimiento académico es 87. Más de la mitad no trabajó mientras estudió, alrededor de la mitad continuó estudiando luego de su graduación y la mayoría desean vincularse a la universidad; además, la tasa de ocupación es alta. De las personas ocupadas, la mayoría trabaja para el sector privado, no posee puestos de jefatura, tiene un solo empleo y percibe estabilidad, satisfacción, relación del trabajo con la carrera y aporte de la carrera para conseguir empleo. Se concluye que la trayectoria vocacional se caracteriza por rezago académico, pocos espacios de práctica profesional durante la formación, alto rendimiento académico, deseo de vinculación con la universidad, índices positivos de satisfacción laboral, estabilidad laboral, relación con la carrera e ingresos; pero permeada por un porcentaje de desempleo potenciado por la crisis económica producto de la pandemia. Por lo cual, se recomienda reformar las mallas curriculares, continuar potenciando el proyecto de prácticas profesionales y formalizar el servicio de Orientación Profesional.