bluuebunny/crossref_metadata_2025 huggingface dataset:
Geotechnical and Shear Behavior of Novel Lunar Regolith Simulants TUBS-M, TUBS-T, and TUBS-I
Authors: Windisch Lisa , Linke Stefan , Jütte Magnus , Baasch Julian , Kwade Arno , Stoll Enrico , Schilde Carsten
Published: December 2022

The return to the Moon is an important short-term goal of NASA and other international space agencies. To minimize mission risks, technologies, such as rovers or regolith processing systems, must be developed and tested on Earth using lunar regolith simulants that closely resemble the properties of real lunar soil. So far, no singular lunar simulant can cover the multitude of use cases that lunar regolith involves, and most available materials are poorly characterized. To overcome this major gap, a unique modular system for flexible adaptable novel lunar regolith simulants was developed and chemically characterized in earlier works. To supplement this, the present study provides comprehensive investigations regarding geotechnical properties of the three base regolith simulant systems: TUBS-M, TUBS-T, and TUBS-I. To evaluate the engineering and flow properties of these heterogeneous materials under various conditions, shear tests, particle size analyses, scanning electron microscope observations, and density investigations were conducted. It was shown that small grains <25 µm (lunar dust) are highly compressive and cohesive even at low external stress. They are particularly important as a large amount of fine dust is present in lunar regolith and simulants (x50 = 76.7 to 96.0 µm). Further, ring shear and densification tests revealed correlations with damage mechanisms caused by local stress peaks for grains in the mm range. In addition, an explanation for the occurrence of considerable differences in the literature-based data for particle sizes was established by comparing various measurement procedures. The present study shows detailed geotechnical investigations of novel lunar regolith simulants, which can be used for the development of equipment for future lunar exploration missions and in situ resource utilization under realistic conditions. The results also provide evidence about possible correlations and causes of known soil-induced mission risks that so far have mostly been described phenomenologically.
Turbulent CFD Simulation of Two Rotor-Stator Agitators for High Homogeneity and Liquid Level Stability in Stirred Tank
Authors: Yin Cuicui , Zheng Kaihong , He Jiazhen , Xiong Yongnan , Tian Zhuo , Lin Yingfei , Long Danfeng
Published: December 2022

Good solid-liquid mixing homogeneity and liquid level stability are necessary conditions for the preparation of high-quality composite materials. In this study, two rotor-stator agitators were utilized, including the cross-structure rotor-stator (CSRS) agitator and the half-cross structure rotor-stator (HCSRS) agitator. The performances of the two types of rotor-stator agitators and the conventional A200 (an axial-flow agitator) and Rushton (a radial-flow agitator) in the solid-liquid mixing operations were compared through CFD modeling, including the homogeneity, power consumption and liquid level stability. The Eulerian–Eulerian multi-fluid model coupling with the RNG k–ε turbulence model were used to simulate the granular flow and the turbulence effects. When the optimum solid-liquid mixing homogeneity was achieved in both conventional agitators, further increasing stirring speed would worsen the homogeneity significantly, while the two rotor-stator agitators still achieving good mixing homogeneity at the stirring speed of 600 rpm. The CSRS agitator attained the minimum standard deviation of particle concentration σ of 0.15, which was 42% smaller than that achieved by the A200 agitators. Moreover, the average liquid level velocity corresponding to the minimum σ obtained by the CSRS agitator was 0.31 m/s, which was less than half of those of the other three mixers.
Research on the Use of Silicon-Ethanol Composite in Actuators
Authors: Kapłon Tomasz , Milecki Andrzej
Published: December 2022

Silicon-ethanol is a relatively new smart composite in the category of phase-change materials (PCM). It consists of liquid ethanol entrapped in bubbles spread into a silicone rubber matrix, i.e., during cooling. The composite is able to expand significantly when heat is applied and shrink when it is removed. The properties of this material can be used in a new type of actuator. In this paper, the basic equations that describe the properties of actuators with a silicon-ethanol composite are given. Using them, two solutions of unidirectional actuators with a composite inserted into polycarbonate tubes and metal bellows are designed and investigated. In the study, actuators with different geometric dimensions and applied composite volumes are investigated. The elongations of the actuators and the blocking forces are measured. The theoretical relationships given at the beginning of the paper that describe the properties of the composite are validated using the performed experimental results of the built actuators. The tube actuators achieved elongation between 32% and 35% at a temperature of 75 degrees Celsius, that is, less than that predicted according to equations from earlier publications. Due to this, a modified equation that includes the influence of friction was proposed and compared with experimental results. The performance of the tube actuator deteriorates rapidly. In the case of bellow actuators, they stabilize after a few cycles of heating and cooling.
Effect of an Anaerobic Fermentation Process on 3D-Printed PLA Materials of a Biogas-Generating Reactor
Authors: Cioabla Adrian , Duma Virgil-Florin , Mnerie Corina , Erdelyi Ralph-Alexandru , Dobre George Mihai , Bradu Adrian , Podoleanu Adrian
Published: December 2022

3D-printed materials are present in numerous applications, from medicine to engineering. The aim of this study is to assess their suitability for an application of interest today, that of testing of 3D-printed polylactic acid (PLA)-based reactors for biogas production using anaerobic digestion. The impact of temperature, pH, and aqueous phase on the tested bioreactor is investigated, together with the effect of the gaseous phase (i.e., produced biogas). Two batches of materials used separately, one after another inside the bioreactor were considered, in a realistic situation. Two essential parameters inside the reactor (i.e., pH and temperature) were continuously monitored during a time interval of 25 to 30 days for each of the two biogas-generating processes. To understand the impact of these processes on the walls of the bioreactor, samples of 3D-printed material were placed at three levels: at the top (i.e., outside the substrate), in the middle, and at the bottom of the bioreactor. The samples were analyzed using a non-destructive imaging method, Optical Coherence Tomography (OCT). An in-house developed swept-source (SS) OCT system, master–slave (MS) enhanced, operating at a central wavelength of 1310 nm was utilized. The 3D OCT images related to the degradation level of the material of the PLA samples were validated using Scanning Electron Microscopy (SEM). The differences between the impact of the substrate on samples situated at the three considered levels inside the reactor were determined and analyzed using their OCT B-scans (optical cross-section images). Thus, the impact of the biogas-generating process on the interior of the bioreactor was demonstrated and quantified, as well as the capability of OCT to perform such assessments. Therefore, future work may target OCT for in situ investigations of such bioreactors.
Ontology Completion with Graph-Based Machine Learning: A Comprehensive Evaluation
Authors: Mežnar Sebastian , Bevec Matej , Lavrač Nada , Škrlj Blaž
Published: December 2022

Increasing quantities of semantic resources offer a wealth of human knowledge, but their growth also increases the probability of wrong knowledge base entries. The development of approaches that identify potentially spurious parts of a given knowledge base is therefore highly relevant. We propose an approach for ontology completion that transforms an ontology into a graph and recommends missing edges using structure-only link analysis methods. By systematically evaluating thirteen methods (some for knowledge graphs) on eight different semantic resources, including Gene Ontology, Food Ontology, Marine Ontology, and similar ontologies, we demonstrate that a structure-only link analysis can offer a scalable and computationally efficient ontology completion approach for a subset of analyzed data sets. To the best of our knowledge, this is currently the most extensive systematic study of the applicability of different types of link analysis methods across semantic resources from different domains. It demonstrates that by considering symbolic node embeddings, explanations of the predictions (links) can be obtained, making this branch of methods potentially more valuable than black-box methods.
Self-Calibration of a Large-Scale Variable-Line-Spacing Grating for an Absolute Optical Encoder by Differencing Spatially Shifted Phase Maps from a Fizeau Interferometer
Authors: Xiong Xin , Yin Chenguang , Quan Lue , Sato Ryo , Matsukuma Hiraku , Shimizu Yuki , Tamiya Hideaki , Gao Wei
Published: December 2022

A new method based on the interferometric pseudo-lateral-shearing method is proposed to evaluate the pitch variation of a large-scale planar variable-line-spacing (VLS) grating. In the method, wavefronts of the first-order diffracted beams from a planar VLS grating are measured by a commercial Fizeau form interferometer. By utilizing the differential wavefront of the first-order diffracted beam before and after the small lateral shift of the VLS grating, the pitch variation of the VLS grating can be evaluated. Meanwhile, additional positioning errors of the grating in the lateral shifting process could degrade the measurement accuracy of the pitch variation. To address the issue, the technique referred to as the reference plane technique is also introduced, where the least squares planes in the wavefronts of the first-order diffracted beams are employed to reduce the influences of the additional positioning errors of the VLS grating. The proposed method can also reduce the influence of the out-of-flatness of the reference flat in the Fizeau interferometer by taking the difference between the measured positive and negative diffracted wavefronts; namely, self-calibration can be accomplished. After the theoretical analysis and simulations, experiments are carried out with a large-scale VLS grating to verify the feasibility of the proposed methods. Furthermore, the evaluated VLS parameters are verified by comparing them with the readout signal of an absolute surface encoder employing the evaluated VLS grating as the scale for measurement.
Salient Targets and Fear of Falling Changed the Gait Pattern and Joint Kinematic of Older Adults
Authors: Luo Yue , Lu Xiaojie , Grimaldi Nicolas S. , Ahrentzen Sherry , Hu Boyi
Published: December 2022

Background: Fear of falling and environmental barriers in the home are two major factors that cause the incidence of falling. Poor visibility at night is one of the key environmental barriers that contribute to falls among older adult residents. Ensuring their visual perception of the surroundings, therefore, becomes vital to prevent falling injuries. However, there are limited works in the literature investigating the impact of the visibility of the target on older adults’ walking destinations and how that impact differs across them with different levels of fear of falling. Objective: The purpose of the study was to examine the effects of target salience on older adults’ walking performance and investigate whether older adults with varying levels of fear of falling behave differently. Methods: The salient target was constructed with LED strips around the destination of walking. Fifteen older adults (aged 75 years old and above), seven with low fear of falling and eight with high fear of falling, volunteered for the study. Participants walked from the designated origin (i.e., near their beds) to the destination (i.e., near the bathroom entrance), with the target turned on or off around the destination of the walking trials. Spatiotemporal gait variables and lower-body kinematics were recorded by inertial sensors and compared by using analysis of variance methods. Results: Data from inertial sensors showed that a more salient target at the destination increased older adults’ gait speed and improved their walking stability. These changes were accompanied by less hip flexion at heel strikes and toe offs during walking. In addition, older adults with low fear of falling showed more substantial lower-body posture adjustments with the salient target presented in the environment. Conclusions: Older adults with a low fear of falling can potentially benefit from a more salient target at their walking destination, whereas those with a high fear of falling were advised to implement a more straightforward falling intervention in their living areas.
Automatic Speaker Recognition System Based on Gaussian Mixture Models, Cepstral Analysis, and Genetic Selection of Distinctive Features
Authors: Kamiński Kamil A. , Dobrowolski Andrzej P.
Published: December 2022

This article presents the Automatic Speaker Recognition System (ASR System), which successfully resolves problems such as identification within an open set of speakers and the verification of speakers in difficult recording conditions similar to telephone transmission conditions. The article provides complete information on the architecture of the various internal processing modules of the ASR System. The speaker recognition system proposed in the article, has been compared very closely to other competing systems, achieving improved speaker identification and verification results, on known certified voice dataset. The ASR System owes this to the dual use of genetic algorithms both in the feature selection process and in the optimization of the system’s internal parameters. This was also influenced by the proprietary feature generation and corresponding classification process using Gaussian mixture models. This allowed the development of a system that makes an important contribution to the current state of the art in speaker recognition systems for telephone transmission applications with known speech coding standards.
Industry 4.0 from An Entrepreneurial Transformation and Financing Perspective
Authors: Lucks Kai
Published: December 2022

This paper addresses the management of digital–informational transformation of industrial enterprises. Any transformation requires the coordinated action of several independent actors. Similarly, the digital–informational transformation required for the fourth industrial revolution (i.e., Industry 4.0) requires the involvement of multiple actors from the public and private sectors. This applies to an individual company as well as to the entire sector, regardless of the desired level of transformation. The increasing dissolution of boundaries between industrial and non-industrial actors is therefore essential for Industry 4.0. This paper addresses the above dissolution activities, focusing on cross-company networks and management issues. The management aspects of the following factors are examined: culture change, strategies, degree of digitalization, degree of networking, Internet of Things, digital ecosystems, human resources, organizational development, hierarchies, cross-functional collaboration, cost drivers, innovation pressures, supply chains, enterprise resource planning systems and corporate acquisitions/mergers. Based on the findings on the above factors, a management-driven model of the “transformation to Industry 4.0” for manufacturing companies is presented and discussed. This work thus complements the existing literature on Industry 4.0, as the majority of the literature on Industry 4.0 deals with technical problem solving at the field level.
Preparation and Application of Graphene–Based Materials for Heavy Metal Removal in Tobacco Industry: A Review
Authors: Xu Xiaojiang , Zeng Junling , Wu Yue , Wang Qiaoying , Wu Shengchao , Gu Hongbo
Published: December 2022

Heavy metals are nondegradable in the natural environment and harmful to the ecological system and human beings, causing an increased environmental pollution problem. It is required to remove heavy metals from wastewater urgently. Up until now, various methods have been involved in the heavy metal removals, such as chemical precipitation, chemical reduction, electrochemical, membrane separation, ion exchange, biological, and adsorption methods. Among them, adsorption by graphene–based materials has attracted much more attentions for the removal of heavy metals from wastewater systems in recent years, arising due to their large specific surface area, high adsorption capacity, high removal efficiency, and good recyclability. Therefore, it is quite important to review the heavy metal removal with the graphene–based material. In this review, we have summarized the physicochemical property and preparation methods of graphene and their adsorption property to heavy metals. The influencing parameters for the removal of heavy metals by graphene–based materials have been discussed. In addition, the modification of graphene–based materials to enhance their adsorption capability for heavy metal removal is also reviewed. The heavy metal removal by modified graphene–based materials in the tobacco industry has been especially described in detail. Finally, the future trend for graphene–based materials in the field of heavy metal wastewater treatment is proposed. This knowledge will have great impacts on the field and facilitate the researchers to seek the new functionalization method for graphene–based materials with high adsorption capacity to heavy metals in the tobacco industry in the future.
Simultaneous Quantification of a Neoadjuvant Treatment Used in Locally Advanced Breast Cancer Using an Eco-Friendly UPLC-MS/MS Method: A Pharmacokinetic Study in Rat Plasma
Authors: El Azab Noha F. , Binjubair Faizah A. , Al-Rashood Sara T. , Okeil Sherif , El Zahar Noha M.
Published: December 2022

Recently, neoadjuvant treatment has turned out to be a feasible alternative for individuals suffering from locally advanced breast cancer. The neoadjuvant therapy is a type of chemotherapy that is given either before or after surgeries to diminish a tumor and minimize the likelihood of recurrence. This article demonstrates the development of a unique bioanalytical validated sensitive method by means of an ultra high performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) approach for the concurrent estimation of neoadjuvant treatments including 5-Fluorouracil, Doxorubicin, and Capecitabine in rat plasma. Samples were prepared using the fine minor QuEChERS process and analyzed using a Shimadzu-C18 column via an isocratic separation. Acetonitrile:water in the ratio of (30:70) (both containing 0.1 percent formic acid v/v) was the mobile phase employed at a flow rate of 0.20 mL/min. At concentrations of 50.00–500.00 ng/mL for 5-Fluorouracil, 25.00–500.00 ng/mL for Doxorubicin, and 5.00–100.00 ng/mL for Capecitabine, the procedure was shown to be linear. The limit of detection (LOD) was assessed in ng/mL and varied from 1.33 to 13.50. Relative standard deviations for precision were below 2.47 percent over the whole concentration range. For all analytes, the average recovery rate varied from 73.79 to 116.98 percent. A preliminary pharmacokinetic study was successfully performed in real rats to evaluate the procedure efficiency.
Treatment of High Nutrient-Loaded Wastewater in a Constructed Floating Wetland with Different Configurations: Role of Lantana Biochar Addition
Authors: Parihar Preeti , Chand Naveen , Suthar Surindra
Published: December 2022

Constructed wetlands (CW) with carbon stock in substrate matrix show high efficiency in wastewater nutrient removals. In this study, five batch-scale CW setups with varying Lantana weed biochar (BC) doses (5, 10, and 15%) in substrate matrix were established and changes in high nutrient-loaded wastewater parameters, ammonium N (NH4+-N), chemical oxygen demand (COD), nitrate (NO3-N), sulfate (SO4−2), and phosphate (PO4−3), were monitored for 240 h hydraulic retention time (HRT). BC amount directly affected the removal mechanism of CWs and a significant reduction in COD (>92.71%) was recorded. CW setup with a 15% BC dose showed the maximum removal of PO4−3 (79.06%), NH4+-N (78.79%), SO4−2 (67.93%), and NO3-N (77.42%) from wastewater. The theory of BC facilitated physical removal, microbial facilitation, and chemical kinetics improvements are proposed for better removal of wastewater nutrients in studied CWs. Research results could be utilized to design a low-cost domestic wastewater treatment facility using BC for rural areas under a decentralized water treatment program.
Conspiratorial Attitude of the General Public in Jordan towards Emerging Virus Infections: A Cross-Sectional Study Amid the 2022 Monkeypox Outbreak
Authors: Sallam Malik , Eid Huda , Awamleh Nour , Al-Tammemi Ala’a B. , Barakat Muna , Athamneh Rabaa Y. , Hallit Souheil , Harapan Harapan , Mahafzah Azmi
Published: December 2022

Conspiracy theories accompany the emergence of infectious diseases and the 2022 multi-country monkeypox (MPX) outbreak is no exception. It is possible that the adoption of conspiracy beliefs negatively impacts health behavior. We aimed to assess the prevalence of conspiratorial attitudes towards emerging virus infections (EVIs) and the response measures aiming to control these infections among the general public in Jordan. In addition, we assessed MPX knowledge and the belief in the role of men who have sex with men (MSM) in virus spread. The online survey data were collected during 24 May 2022–28 June 2022. The survey instrument was based on previously published scales designed to measure MPX knowledge and EVI conspiracies. A total of 611 respondents formed the final study sample, with a mean age of 44 years and a majority of females (n = 433, 70.9%). On a scale ranging from −10 to +10, the median MPX knowledge score in the study sample was +3 (interquartile range: +1 to +5). Educational level was a determinant of MPX knowledge in multivariate analysis. More than 50% of the participants agreed at least to some extent with 9 out of 12 of the EVI conspiracy items. Multivariate analysis showed that embracing conspiracy beliefs about EVIs was associated with being female, and agreeing with or having no opinion regarding the role of MSM in MPX spread. The current study revealed the high prevalence of belief in conspiracies surrounding EVIs, and its accompanying intervention measures, among the general public in Jordan. In addition, a lower level of MPX knowledge was observed compared to previous studies among university students and health professionals in the country. We recommend evaluating the impact of the widely prevalent conspiracy beliefs on health aspects in future studies. This aim is particularly relevant in the Middle Eastern countries where embracing specific conspiracy ideas is a common occurrence.
The use of protein from pumpkin seeds and chickpea extract in the production of culinary products
Authors:   Department of Tourism and Hospitality, Ural State University of Economics, Vyatkin A.V. , Bikbulatov P.S. ,   Department of Nutrition Technology, Ural State University of Economics, Chugunova O.V. ,   Department of Nutrition Technology, Ural State University of Economics
Published: December 2022

The main directions of the development of new types of culinary products are: increasing their nutritional and reducing energy values, due to changes in the formulation, the introduction of biologically active substances and physiologically signifi cant ingredients. The paper presents the possibilities of expanding the range of culinary products, for example, cereal dishes, using chickpea extract with a concentration of 5% and protein extract from pumpkin seeds with a concentration of 4%. It is shown that the dishes off ered are characterized by an increased content of essential amino acids.
Potential hazards associated with the use of genetically modifi ed organisms in human food
Authors:   Military Academy of Air and Space Defense named after Marshal of the Soviet Union G.K. Zhukov, Tver, Rodionova A.E.
Published: December 2022

The article provides an analysis of genetically modified organisms. A scheme for their creation is given; genetically modified plants and animals, as well as potential dangers associated with the GMO use in human food are considered.
Decompression and mini-invasive surgery for hypertensive intracerebral hematoma
Authors:   SI National Medical Center of the Republic of Tajikistan «Shifobakhsh», Rakhimov N. O. , Lukyanchikov V. A. ,   SBHI Sklifosovsky Institute for Emergency Medicine of the Moscow Healthcare Department; A. I. Yevdokimov Moscow State University of Medicine and Dentistry, Rakhmonov Kh. J. ,   SI National Medical Center of the Republic of Tajikistan «Shifobakhsh»; SEI Avicenna Tajik State Medical University, Shoev S. N. ,   SEI Avicenna Tajik State Medical University, Mavlonov J. B. ,   SI National Medical Center of the Republic of Tajikistan «Shifobakhsh»
Published: December 2022

Despite significant progress in the emergency management of these patients, the ideal surgical treatment is still to be determined. Surgical hematoma evacuation has many theoretical advantages, such as the prevention of mass effect, cerebral ischemia, reduction of intracranial pressure, and reduction of neurotoxicity. Several surgical methods, such as open puncture aspiration, decompressive craniotomy, and endoscopic surgery, were considered. This article reviews the clinical data on surgical hematoma evacuation and its role in reducing mortality and improving functional outcomes after hypertensive intracerebral hemorrhage.
Post-COVID damage to the central nervous system
Authors:   FSBEI HE Volgograd State Medical University of the Ministry of Health of Russia, Skvortsov V. V. , Rodionova I. V. ,   FSBEI HE Volgograd State Medical University of the Ministry of Health of Russia, Tagiev F. Z. ,   FSBEI HE Volgograd State Medical University of the Ministry of Health of Russia
Published: December 2022

On March 11, 2020, the World Health Organization (WHO) declared the coronavirus disease 2019 (COVID-19) a global pandemic. COVID-19 is caused by the newly identified severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and represents an ongoing global healthcare emergency. As of May 2, 2022, 513.9 million confirmed cases of COVID-19 and more than 6 million deaths have been registered in 218 countries around the world. Already at the beginning of the pandemic, it became obvious to researchers that, despite the name of the respiratory syndrome, the damage caused by the novel type of coronavirus is not limited only to the respiratory system, but is multi-organ and multi-system. Although damage to the nervous system is not the first manifesting symptom in this case, it often causes the severity of the condition, long-term consequences, and sometimes death.
Retrospective comparative analysis of the results of minicraniectomy and burr hole drainage in chronic subdural hematomas
Authors:   Kyrgyz State Medical Academy named after I. K. Akhunbaev. Department of Neurosurgery. Bishkek, Kyrgyz Republic, Yrysov K. B. , Seideldaev A. Zh. ,   Kyrgyz State Medical Academy named after I. K. Akhunbaev. Department of Neurosurgery. Bishkek, Kyrgyz Republic, Idirisov A. B. ,   Kyrgyz State Medical Academy named after I. K. Akhunbaev. Department of Neurosurgery. Bishkek, Kyrgyz Republic
Published: December 2022

Relevance. Primary chronic subdural hematomas remain one of the most common conditions faced by neurosurgeons. Despite this, there is a relative lack of evidence regarding best management, and some treatments, such as minicraniectomy, have rarely been reflected in the literature. The purpose of this study was to conduct a retrospective comparison of minicraniectomy and burr hole drainage in primary chronic subdural hematoma. We aimed to determine the proportion of patients requiring repeated drainage or Dandy cannula aspiration after the initial operation and to evaluate the result during outpatient follow-up. Material and methods. The average age of patients who underwent minicraniectomy was 73 compared to 63 in the burr hole group (p < 0.001). Burr hole drainage was performed in 130 patients, 23 of whom (18 %) developed a symptomatic relapse. 21 (16 %) of these patients required repeated drainage. Results. Out of 116 patients who underwent craniectomy, 23 (20 %) patients had a symptomatic relapse. 15 (13 %) patients required re-opening of the minicraniectomy for further drainage (p = 0.48). 10 (8 %) patients died after burr hole drainage copared to 20 (17 %) patients after craniectomy (95 % CI from 2 to 18 %; p = 0.03). However, age control using logistic regression did not show a significant difference between the two treatment groups with regards to relapse (p = 0.28) or death (p = 0.06). Conclusion. Craniectomy can be considered as a treatment option, especially in the elderly and in patients with multiple localized clusters.
Desarrollo de competencias matemáticas en tiempos de virtualidad
Authors: Ipushima Ochavano Doylith , Sánchez Peña Hugo , Solís Trujillo Beymar Pedro
Published: December 2022

El uso de la tecnología ha dejado de ser exclusivo para ciertas actividades, convirtiéndose en una herramienta fundamental, para el desarrollo de competencias en las diferentes áreas de la educación. El objetivo fue identificar las diversas estrategias utilizadas para el desarrollo de competencias matemáticas mediante el uso entornos virtuales. La metodología utilizada es de análisis documental, basado en una revisión sistemática de 56 documentos científicos indexadas en bases de datos confiables. Los resultados muestran que, hacer uso adecuando de la tecnología, permite al estudiante desarrollar sus competencias matemáticas, lograr la autonomía en su aprendizaje y construir sus conocimientos mediante la interacción entre sus pares y el docente. Se concluye que, para el desarrollo de competencias matemáticas en tiempos de virtualidad, el docente debe tener desarrollada sus competencias digitales y aplicar diversas herramientas tecnológicas en el proceso de enseñanza aprendizaje.
Enseñanza remota y competencias digitales en estudiantes de educación básica regular, Lima-Perú
Authors: Ibarguen Cueva Francis Esmeralda , Alvarez Huari Maria Ysabel , Medina Manrique Claudia Adriana , Cordova Canaza Meliza , Colque Ricce Oscar Alfredo , Garcia Cabrera Clara Ivett
Published: December 2022

Ante la necesidad imperiosa de transformar el modelo de educación predominate hoy en día por un modelo digitalizado y remoto, con el fin de satisfacer las demandas de la sociedad actual, se realiza un estudio para establecer la relación entre la enseñanza remota y las competencias digitales en estudiantes de una institución educativa pública. El estudio fue de tipo descriptivo, correlacional, con enfoque cuantitativo, con una población de 60 estudiantes educación básica regular. El método fue hipotético-deductivo, los instrumentos fueron validados mediante el coeficiente Alfa de Cronbach (en enseñanza remota 0,918 y en competencias digitales 0,917). Los resultados descriptivos de enseñanza remota revelan un nivel deficiente de 58,3 %, el mismo nivel en sus tres dimensiones. Similar resultado se encontró en competencias digitales, deficiente en 67,1 %, el mismo nivel en sus dimensiones. Lo que permite concluir que las variables estudiadas tienen una correlación positiva, alta y moderada.
Habilidades sociales y el clima escolar en una institución educativa pública de Lima
Authors: Aguirre Ocaña Gladys Nancy , Caffo Marruffo Marlene Esperanza , Galarza Soto Karla Vicky , Dueñas Zúñiga Huguette Fortunata , Rojas Gutiérrez William Jesús
Published: December 2022

El estudio reporta un ejercicio de revisión del concepto de desarrollo de las habilidades sociales en estudiantes con vistas a contribuir a la mejora del clima escolar de las instituciones. El estudio tiene como objetivo demostrar la influencia del desarrollo de las habilidades sociales en la mejora del clima escolar en una institución educativa. El estudio es de diseño no experimental, de tipo correlacional con metodología cuantitativa. La población comprendió de 54 estudiantes y la muestra fue censal. Se utilizó como instrumento dos cuestionarios estandarizados, para la variable habilidades sociales se utilizó el cuestionario de Goldstein, el cual comprendió cinco dimensiones, para la variable clima escolar, se utilizó el cuestionario Classroom Environment Scale (CES). Según los resultados se obtuvo el valor de R = 0,712 y el p < 0,01 por lo que se afirma que existe una correlación positiva y alta entre ambas variables, concluyendo que las habilidades sociales tienen influencia en el clima escolar y sus dimensiones.
Biodiversidade da restinga de Laguna (SC) e Educação Ambiental: uma vivência na pandemia
Authors: Silva Letícia Vieira da , Boff Larissa de Aguiar , Hemmer Deborah Cabral
Published: December 2022

A restinga é um ecossistema de alto endemismo e baixa resiliência encontrado na cidade de Laguna (SC). Em razão do histórico de atividades antrópicas nas áreas costeiras, ele se encontra vulnerável. Por isso, em resposta à proposta da disciplina Métodos de Educação Ambiental, desenvolveu-se um projeto cuja finalidade era informar crianças da região sobre o ambiente de restinga e estimulá-las emocional e intelectualmente. Devido à pandemia Covid-19, não foi possível a execução com escolas. Sendo assim, este relato de experiência aborda a prática vivenciada na aplicação virtual do projeto com crianças do nosso círculo familiar e traz resultados de caráter qualitativo.
Cardápio de ideias: reflexões e práticas de Educação Ambiental e segurança alimentar
Authors: Cerezini Monise Terra , Barbosa Flávia Darre , Ferreira Caroline Lins Ribeiro
Published: December 2022

A questão ambiental articulada à segurança alimentar surge como uma necessidade para refletir sobre a problemática socioambiental suscitada pelo modelo hegemônico da produção agrícola. A presente pesquisa-ação, realizada no restaurante Mamãe Natureza, em São Carlos (SP), teve como objetivo ampliar a compreensão teórico e prática da Educação Ambiental dos/as clientes. Para o levantamento histórico, realizou-se entrevista semiestruturada com as sócias do restaurante e análise de documentos e fotos. A abordagemmunicativo-crítica orientou a produção de conhecimento mútuo e diversificado, em uma intervenção denominada “Cardápio de Ideias”, que resultou na sistematização de sugestões de atividades de Educação Ambiental e alimentação natural para o espaço.
Percepção ambiental dos funcionários de uma empresa do ramo madeireiro do município de Santa Cecília (SC) sobre a implantação de um sistema de coleta seletiva
Authors: Silva Renael Antônio Ferreira da , Campos Roger Francisco Ferreira , Kuhn Daiane Cristine
Published: December 2022

Toda empresa que se preocupa com o meio ambiente necessita do desenvolvimento da destinação ambientalmente adequada dos resíduos sólidos gerados em todas as etapas de seu processo produtivo. Desse modo, seus colaboradores precisam estar engajados nessa causa, visto que muitas empresas não apresentam um processo de gestão ambiental adequada dos resíduos. Neste contexto, o presente trabalho tem como objetivo avaliar a percepção ambiental dos colaboradores de uma empresa madeireira do município de Santa Cecília - SC, com a perspectiva da implantação de um sistema de coleta seletiva. Para o desenvolvimento do estudo foi aplicado um questionário semiestruturado, composto de seis variáveis sobre o processo de gestão de resíduos na empresa, cobrindo 33,8% dos colaboradores da empresa, por meio da técnica aleatória simples como método de amostragem qualitativo. O estudo revelou que o nível de percepção dos colaboradores encontra-se abaixo para os questionamentos sobre coleta seletiva e conhecimento sobre as cores das lixeiras, como também sobre os danos causados ao meio ambiente. Assim, pode-se concluir que existe a necessidade da aplicação da Educação Ambiental para os colaboradores, buscando um maior desenvolvimento sustentável no processo produtivo da empresa.
Experiência em Ensino Remoto Emergencial (ERE) em Educação Ambiental na Universidade Federal de Alfenas
Authors: Matias Tális Pereira , Neves Janine Ameku , Imperador Adriana Maria
Published: December 2022

Este estudo de caso foi realizado na Universidade Federal de Alfenas (UNIFAL-MG) nos cursos de Engenharia Ambiental e Bacharelado Interdisciplinar em Ciência e Tecnologia (BiCT) na disciplina de Educação Ambiental (EA). A disciplina foi ministrada no sistema de Ensino Remoto Emergencial (ERE), por meio da metodologia de projetos, em que os alunos levantaram problemas ambientais e desenvolveram projetos de EA para a solução das questões levantadas. Como principais resultados destaca-se a eficácia da interação e participação dos alunos, além da abordagem e identificação de problemas ambientais locais importantes e o uso da interdisciplinaridade para a construção dos projetos e debates propostos nas aulas síncronas.
Indícios de percepção dos professores de ciências e biologia sobre os macroinvertebrados bentônicos e o seu uso para a Educação Ambiental
Authors: Sacramento Patricia Almeida , Barbado Norma , Gomes Patricia Pereira
Published: December 2022

Este estudo teve como objetivo analisar a percepção dos professores de Ciências e Biologia sobre macroinvertebrados bentônicos, e o seu potencial uso em atividades escolares. Um questionário foi formulado por meio da plataforma Google Forms contendo questões e um vídeo de sensibilização. Após os professores assistirem ao vídeo, foi possível notar nos mesmos indícios de percepção sobre a importância desses organismos como bioindicadores da qualidade dos recursos hídricos. A maioria dos professores se mostraram favoráveis a inserção de atividades práticas utilizando esses organismos, já que estas podem contribuir com a popularização da ciência e da formação de estudantes mais conscientes com o ambiente em que vivem.
Extractivismo y modelo agroexportador en Argentina: el caso de la Hidrovía Paraguay Paraná
Authors: Rausch Gisela Ariana
Published: December 2022

Se analiza la conformación del territorio hidrosocial definido por la Hidrovía Paraguay Paraná, en Argentina, como soporte del modelo agroexportador. A partir de la indagación pudo observarse la constitución de un orden territorial definido por las prácticas extractivistas y el agronegocio; la definición de un orden simbólico que asocia la megainfraestructra a la idea de desarrollo; y finalmente, los conflictos sociales emergentes de la implementación de la vía navegable. Se ha podido constatar que la megainfraestructura configuró una nueva constelación hidrosocial en los territorios que conforman las cuencas a partir del establecimiento de la escala supranacional, y en Argentina, de un orden territorial-simbólico asociado principalmente al cultivo de soja transgénica, que entró en conflicto con las territorialidades existentes.
Fatores Associados à Incidência de Óbitos em Acidentes de Trânsito nas Rodovias Federais do Estado de Santa Catarina, Brasil
Authors: Borba Broering Wellington , Schoenhals Delavy Francieli , Konrath Andrea Cristina Konrath , Nakamura Luiz Ricardo , Do Carmo Comparsi de Vargas Vera
Published: December 2022

A presente pesquisa buscou investigar, por meio de um modelo de regressão logístico, como determinados fatores podem contribuir para a ocorrência de acidentes fatais em rodovias federais do estado de Santa Catarina - Brasil. Para tal, foram utilizados dados públicos da Polícia Rodoviária Federal sobre acidentes ocorridos no período de 2007 a 2018. O modelo logístico final permitiu estabelecer a razão de chances das principais categorias dentro das variáveis condição meteorológica, fases do dia, causas do acidente, tipo de acidente e traçado da via. Fatores como colisão frontal, atropelamento, amanhecer, causa viária/ambiental e condições ensolaradas foram os mais representativos nesse contexto. Elementos associados à falta de canteiros centrais e passarelas para pedestres, baixa visibilidade durante a condução e fadiga ao volante foram grandes contribuintes para o aumento da gravidade das colisões. As maiores razões de chances para os fatores viário/ambiental e condição ensolarada foram considerados resultados inesperados, indo de encontro à premissa de que o fator humano e condições de pista molhada contribuem mais significativamente para a ocorrência de óbitos. A falta de informações sobre a condição da pista no momento do acidente, o volume de tráfego das rodovias e o tipo de veículo foram fatores limitantes para o estudo.
La relación movilidades y desigualdades, aportes desde las investigaciones en ciencias sociales y humanas
Authors: Navarrete María José
Published: December 2022

En este artículo nos preguntamos de qué forma se ha abordado en la literatura sobre movilidades, la relación entre movilidades y desigualdades en el espacio urbano. Para responder a este interrogante se realizó una reconstrucción de distintas investigaciones provenientes del campo de las ciencias sociales y humanas. La revisión bibliográfica realizada expone las significativas contribuciones realizadas desde este campo a la comprensión de las problemáticas de movilidad vinculadas con la desigualdad. Estos aportes enriquecen los estudios urbanos y la planificación de políticas urbanas.
Análisis de la cadena de valor de la empresa Avanza Mobility ADO
Authors: Florido-Benítez Lázaro , Lora Castillero Ernesto
Published: December 2022

La cadena de valor es de vital importancia para las empresas de autobuses, puesto que permite realizar un análisis estratégico de sus ventajas competitivas mediante un análisis interno de las actividades que esta desarrolla. Para ello se profundiza en los servicios que pone a disposición de la sociedad, el valor que recibe los usuarios y la aportación a la movilidad que ofrecen estas compañías al transporte terrestre de viajeros. La metodología de este estudio ha sido una combinación de búsqueda de información cualitativa y cuantitativa, con la finalidad de escenificar la actualidad de este sector en la provincia de Málaga. Se analizaron las actividades primarias relacionadas con la puesta del servicio al mercado y la comercialización de éste, y las actividades de apoyo, aquellas que sustentan la operatividad y servicio final que recibe el pasajero. El principal objetivo es determinar las ventajas competitivas con las que cuenta Avanza Mobility ADO frente a sus principales competidores. Además, nos hemos marcado otros objetivos específicos, como analizar los actores de la cadena de valor de la empresa, para alcanzar unos resultados y conclusiones realistas, y ayuden a tomar mejores decisiones en las acciones y planes estratégicos por parte de los operadores y gestores de dicho sector del transporte.
Buscando a caminhabilidade: fatores que influenciam nos hábitos de caminhada em Palmas-TO
Authors: Bracarense Lílian dos Santos Fontes , De Oliveira Leise , Carvalho Barbosa Ana Clara , Marinho de Oliveira Millena , De França Marques Samuel
Published: December 2022

Um bom planejamento do uso do solo e um desenho urbano relacionados à densidade populacional podem proporcionar a promoção do transporte ativo. Nesse contexto, este artigo tem por objetivo investigar os fatores que influenciam nos deslocamentos a pé, a partir de uma análise quali-quantitativa para Palmas, Tocantins. Os fatores foram investigados a partir de uma perspectiva funcional, por meio de indicadores, e também a partir da percepção de residentes sobre a estrutura urbana. Identificou-se relação de dependência dos hábitos de caminhada com fatores socioeconômicos e com a percepção do pedestre sobre a estrutura urbana, mas não com os indicadores utilizados para caracterizar a estrutura urbana, que se revelou relativamente homogênea nas regiões da cidade. Em relação à diversidade de usos, a satisfação com o comércio próximo da residência revelou-se mais importante fator de atratividade ao caminhamento, corroborando a importância de considerar a perspectiva de percepção dos usuários para promoção da caminhabilidade. A identificação dos fatores socioeconômicos e de atratividade para promoção da caminhada auxilia no desenvolvimento de políticas públicas para incentivo do transporte ativo.
Estratégias para o planejamento da mobilidade sustentável: um estudo exploratório no Brasil
Authors: Borges Monteiro Alves Fernanda , Ferreira Perroni da Silva Glayse , Neyra Belderrain Mischel Carmen , Carvalho Rosa Bergiante Nissia , Cabral de Sousa Junior Wilson , Manoel Mendes Filho Walter
Published: December 2022

O crescimento acelerado da população nas cidades brasileiras, aliado à falta de um planejamento urbano adequado, tem o problema da mobilidade urbana como uma de suas consequências mais aparentes. O artigo aborda os impactos da expansão urbana na mobilidade para o município de São José dos Campos/SP. A falta de integração entre os diferentes modais e os impactos causados no transporte urbano no cenário municipal são os principais pontos que motivam este estudo. Assim, o objetivo do trabalho foi compreender e estruturar esta situação problemática e propor ações estratégicas, com vistas à promoção da mobilidade urbana sustentável naquele município. Para isto, será adotada uma abordagem multimetodológica que consistirá na combinação dos Mapas Cognitivos com o SCA (Strategic Choice Approach), apoiado pela utilização da matriz GUT (Gravidade/Urgência/Tendência). Como resultado foi possível definir um pacote de compromissos de decisões e ações estratégicas, que visem melhorar a infraestrutura de transporte atual e preparar o município para futuras atualizações, já considerando a multimodalidade como alternativa.
Satisfacción Laboral: factores motivadores que influyen en los trabajadores de una empresa
Authors: Cárdenas Maricela Carolina Peña , Macías Adriana Guadalupe Chávez , Flores Karen Yaneth Rivera
Published: December 2022

La Satisfacción en el trabajo es una actitud que se distingue básicamente de la motivación para trabajar. El propósito del presente trabajo es identificar los factores motivadores que influyen en los trabajadores de una Empresa del sector Comercio de Monclova, Coahuila. Esta investigación es transversal, descriptiva y cuantitativa. La muestra se determinó por conveniencia considerándose un total de 133 trabajadores; a quienes se les aplicó un cuestionario estructurado, tipo escala de Likert, para la fiabilidad del instrumento se utilizó la prueba de Alfa de Cronbach, obteniéndose un coeficiente de consistencia interna de 0.952. Los resultados obtenidos fueron los siguientes: en las medias globales se identificaron las variables Condiciones del área de trabajo, Beneficios y el Trabajo en Sí. En cuánto a la Teoría Bifactorial de Herzberg, los Factores de Motivación o Satisfacción Intrínseca las variables que se destacaron fueron el Trabajo en Sí y la Promoción. Se concluye que la satisfacción es media en cuanto a las variables medidas.