bluuebunny/crossref_metadata_2025 huggingface dataset:
Surgical treatment for multifocal epilepsy
Authors: Kostiuk K. R. , Buniakin V. M. , Cheburakhin V. V. , Shevelov M. M. , Medvedev Y. M. , Popov A. O. , Tevzadze D. A. , Dichko S. M. , Musulievska V. V. , Kanaikin O. M.
Published: March 2022

Aim. Assessment of the surgical treatment efficacy in multifocal epilepsy by a differentiated surgical approach depending on the clinical manifestations of the disease and structural and functional changes of the brain.
Materials and methods. 48 patients with multifocal epilepsy (MFE) were enrolled in the study including 37 (77 %) children and 11 (23 %) adults. Patient age ranged from 2 to 44 years (mean 12.7 years). Most patients (46 (95.8 %) cases) had daily seizures. Before the treatment, the patients used between 2 and 11 antiepileptic drugs (on average 5.1 ± 2.5) as mono- or polytherapy.
12 (25.0 %) patients underwent stereotactic callosotomy (SC), 18 (37.5 %) – microsurgical callosotomy (MC), 6 (12.5 %) – multifocal resections (MFR), 12 (25.0 %) – functional hemispherotomy (FH). Postoperative long-term follow-up ranged from 6 months to 11 years (mean 5.5 years).
Results. Multiple epileptiform focuses or diffuse structural and electric discharges within one hemisphere observed in 25 (52 %) cases; bilateral structural lesions revealed in 19 (40 %) cases; MRI-negative epilepsy with bilateral discharges – in 4 (8 %) patients.
After surgery, 23 (48 %) patients became seizures free (Engel Class IA), 8 (17 %) patients had rare short auras or focal seizures (Engel Class II), the seizure frequency reduced by less than 75 % or did not change significantly in 6 (13 %) cases. Best results were achieved after FH and MFR (90 % patients became seizures free), whereas seizures stopped only in 25 % cases after SC. 3 (6.3 %) patients developed operative complications, one of them died (postoperative mortality was 2.1 %).
Conclusions. Combination of resective and disconnection surgeries is effective and safe method of surgical treatment for MFE. Stopping seizures leads to the regression of psycho-emotional disorders in children with severe epilepsy and increases the quality of life.
Narrative Conflict and Implied Value Conflict: An Analysis of Aspects of the Implied Worldview of Richard Morgan’s Altered Carbon (2002) and Hanif Kureishi’s The Body (2002)
Authors: Wally Johannes
Published: March 2022

This essay examines the narrative conflicts in the cyberpunk novel Altered Carbon and the neo-gothic novella The Body. The theoretical assumption of the analyses is that narrative conflict can serve as an indicator of aspects of a text’s implied worldview: more specifically, narrative conflict is presumed to be indicative of an implied value conflict. Resorting to a spatial conflict model based on Jurij Lotman’s concept of border crossing, the essay argues that both texts differ substantially regarding the values they negotiate despite both deploying the transhumanist concept of body swapping. Whereas Altered Carbon places a socio-economic conflict at its core, The Body negotiates a metaphysical conflict. Accordingly, Altered Carbon discusses the construction of self-worth in view of an economically and socially overpowering opponent, whereas The Body emerges as a search for a value which can fill the void created by the dwindling relevance of religious notions of eternity in a secular world.
Biomedical evaluation of antioxidant properties of lamb meat enriched with iodine and selenium
Authors: Giro Tatiana M. , Kozlov Sergey V. , Gorlov Ivan F. , Kulikovskii Andrey V. , Giro Anna V. , Slozhenkina Marina I. , Nikolaev Dmiytiy V. , Seidavi Alireza , Mosolov Alexander A.
Published: March 2022

The article presents a study of the antioxidant properties of meat from lambs that received organic forms of iodine and selenium during growth. This meat was included in diets of laboratory animals using a model of acute toxic hepatitis. The experiments resulted in developing and testing a technique that was effective in enriching lamb with bioorganic elements of iodine and selenium and contributed to the activation metabolism in the bodies of animals consuming the meat. The purpose of the presented investigation was to compare the roles of bioorganic iodine and selenium and their combination as antioxidants in rat rations using a model of acute toxic hepatitis induced by carbon tetrachloride. The experimental studies have established a hepatoprotective effect of lamb meat enriched with selenium and iodine on rats suffering from toxic xenobiotic effects. This was confirmed by normalized hematological and biochemical measures in the blood of the experimental rats.
Classification of breast cancer with deep learning from noisy images using wavelet transform
Authors: Cengiz Enes , Kelek Muhammed Mustafa , Oğuz Yüksel , Yılmaz Cemal
Published: March 2022

In this study, breast cancer classification as benign or malignant was made using images obtained by histopathological procedures, one of the medical imaging techniques. First of all, different noise types and several intensities were added to the images in the used data set. Then, the noise in images was removed by applying the Wavelet Transform (WT) process to noisy images. The performance rates in the denoising process were found out by evaluating Peak Signal to Noise Rate (PSNR) values of the images. The Gaussian noise type gave better results than other noise types considering PSNR values. The best PSNR values were carried out with the Gaussian noise type. After that, the denoised images were classified by Convolution Neural Network (CNN), one of the deep learning techniques. In this classification process, the proposed CNN model and the VggNet-16 model were used. According to the classification result, better results were obtained with the proposed CNN model than VggNet-16. The best performance (86.9%) was obtained from the data set created Gaussian noise with 0.3 noise intensity.
A unique frequency reconfigurable monopole antenna for TV white space applications
Authors: Kumar Sanjeev , Rayavarapu Neela
Published: March 2022

TV White space has the potential to extend internet connection to remote areas worldwide. In this paper, a dual-band frequency reconfigurable microstrip patch antenna has been designed for TV white space applications. Switching between the frequencies (reconfiguration) has been achieved by introducing a switch between two radiating strips on the top surface of the substrate. The prototype has been designed and fabricated on a cost-effective FR-4 substrate (εr = 4.4, tanδ = 0.02) with an overall dimension of 30 × 261 × 0.8 mm3. ON and OFF condition of the switch provides two operating frequency bands namely 626.7–778.11 MHz and 461.5–549.7 MHz The proposed monopole TV white space antenna operates with a peak gain of 2 dB with an efficiency greater than 85% in both the bands. The simulated and measured parameters are well-matched in both the operating bands along with desired radiation patterns suitable for TV white space applications.
In situ microstructural evolution of spruce wood during soda pulping using synchrotron X-ray tomography
Authors: Wagih Ahmed , Hasani Merima , Hall Stephen A. , Novak Vladimir , Theliander Hans
Published: March 2022

A new laboratory reactor to perform in situ studies of structural changes in wood during soda pulping using synchrotron X-ray tomography is presented. The reactor is of recirculation type to provide stable reaction conditions and mimic the industrial situation. Experiments have been performed using this reactor in situ at a synchrotron microtomography beamline to provide sequences of 3D images from which measurement of wood cell wall thickness have been possible for the first time. The results showed that the cell wall thickness increased significantly in the early stage of pulping (<10 min), which is due to the transportation of cooking chemicals through the tracheids, resin channels and pits into the cell wall, which is swollen with the increased pH. Subsequently, the cell wall thickness reduces over the processing time up to 60 min with a high rate, which is inferred to be due to the dissolution and transport of lignin and hemicellulose from the secondary walls, allowing for better transportation of active chemicals deep through the cell wall layers. After 60 min processing, the cell wall thickness reduction rate reduced, as dissolution of lignin and hemicelluloses from the cell walls ceased, while the remaining dissolution occurs mainly at the middle lamella.
Detonation waves in melt-coolant interaction
Authors: Kolev N. I. , Hulin H.
Published: March 2022

Making use of the detonation theory presented in part 1 for melt-water interaction, detonation solutions for different meltwater pairs at different conditions are compared to each other. Discussion is provided on the existence of detonation solutions for water droplet – melt droplet – gas systems. The conclusion is made that even if such solutions can be realized in the nature, which is highly questionable, the resulting detonation pressures will be below 200 bar. This is an important result for judging the risk of the melt-water disperse mixtures in nuclear safety analysis. In addition, the detonation pressures for alumnacontinuous water systems have been found to be stronger then those for urania-continuous water systems, in agreement with the experimental observations and seems to give finally the searched for a long time explanation why alumna-water systems detonate much more violent than urania-water systems.
Finite element computation of fission gas release from UO2 grains
Authors: Sauer G.
Published: March 2022

Fission gas release from the fuel is an important aspect of mechanical fuel rod design. It is required by design rules that gas release be limited. To predict the release in advance for arbitrary power conditions, a reliable computational tool must be available. A procedure based on the finite element method for evaluating the gas release is presented. The differential equation governing the diffusion process is approximated by a system of one-dimensional elements leading to small equation systems with few unknowns. These systems can rapidly be solved allowing the computation of the diffusion and gas release for any power history in short time. The results obtained with the finite element approach are compared with analytical results for constant conditions. Additionally, the gas release under varying conditions is studied and the influence of the grain size on the gas release is discussed. Finally, some methods are described that enable the estimation of gas release based on the temperature histories of grain or fuel pellet centre.
Integral nucleus-nucleus cross-sections
Authors: Barashenkov V. S. , Kumawat H.
Published: March 2022

Expressions approximating the experimental integral cross-sections for elastic and inelastic interactions of light and heavy nuclei at energies up to several GeV/nucleon are presented. The calculated cross-sections are inside the corridor of experimental errors or very close to it.
Uncovering cryptic diversity does not end: a new species of leaf-eared mouse, genus Phyllotis (Rodentia, Cricetidae), from Central Sierras of Argentina
Authors: Teta Pablo , Jayat Jorge Pablo , Steppan Scott J. , Ojeda Agustina A. , Ortiz Pablo E. , Novillo Agustina , Lanzone Cecilia , Ojeda Ricardo A.
Published: March 2022

Based on previously published molecular (mitochondrial) and herein provided morphological (qualitative and quantitative data) evidence, we describe a new species of leaf-eared mouse of the genus Phyllotis. The new species is morphometrically distinct when compared with other phylogenetically or geographically close species of Phyllotis, showing several quantitative differences in their external and craniodental characters (e.g., proportionally broader nasals and interorbital region, and proportionally smaller tympanic bullae). The new species is endemic to central Argentina, occurring on rocky grasslands at elevations of 650–2,800 m a.s.l. This is the only species of Phyllotis inhabiting the Central Sierras, a mountain system of medium elevation, isolated from the Andes by low elevation arid and semiarid environments.
Facile fabrication of stretchable photonic Ag nanostructures by soft-contact patterning of ionic Ag solution coatings
Authors: Kim Minwook , Oh Dong Kyo , Kim Jeong Dae , Jeong Minsu , Kim Hongyoon , Jung Chunghwan , Song Jungkeun , Lee Wonjun , Rho Junsuk , Ok Jong G.
Published: March 2022

We describe a rapid and simple method to create Ag nanostructures by using direct mechanical patterning of ionic Ag ink coating under gentle pressure, then thermal annealing to reduce the ionic Ag ink to a metallic Ag layer. The ionic liquid-phase Ag coating is easily obtained by spin-coating ionic Ag ink that has appropriate Ag concentration and can be either printed or imprinted on the desired substrate by using a soft elastomer patterning mold, then reduced to the Ag nanostructure by subsequent thermal annealing. More specifically, we present two methods: transfer printing and soft nanoimprinting. In transfer printing, the ionic Ag ink is first inked onto the elastomer mold which then contacts the target substrate to transfer the Ag nanopattern. In soft nanoimprinting, the elastomer mold conducts soft imprinting to engineer the ionic Ag ink coating to the Ag nanostructure. We systematically investigate the optimal patterning conditions by controlling the initial Ag ink concentration and the coating, printing, imprinting, and annealing conditions, to derive Ag architecture that has tunable photonic functionality. As an example, we demonstrate polarization-sensitive reflective color filters that exploit shape-tunable Ag nanostructures fabricated by soft nanoimprinting using a controllably-stretched elastomer mold.
Picosecond pulse generation from continuous-wave light in an integrated nonlinear Bragg grating
Authors: Choi Ju Won , Sohn Byoung-Uk , Sahin Ezgi , Chen George F. R. , Ng Doris K. T. , Eggleton Benjamin J. , Martijn de Sterke Carel , Tan Dawn T. H.
Published: March 2022

The generation of optical pulse trains from continuous-wave light has attracted growing attention in recent years because it provides a simple way to obtain high repetition rate ultrashort pulses. While pulse generation has been extensively demonstrated in optical fibers, pulse train generation from weak, continuous wave light in photonic chips has posed significant challenges because of the short interaction length and therefore difficulty in acquiring sufficient new frequency content, and/or absence of the appropriate dispersion environment. In this manuscript, we report the pulse train generation of a low continuous-wave signal to 18 ps, by leveraging cross-phase modulation induced by co-propagating pump pulses with a peak power of 3.7 W in an ultra-silicon-rich nitride grating. The pulse train generation dynamics are documented both experimentally and theoretically to arise from cross-phase modulation-induced generation of new spectral content, and dispersive re-phasing. This is a new approach in which picosecond pulse generation may be achieved from low power, continuous-wave light.
The crystal structure of diaqua-bis(6-phenylpyridine-2-carboxylato-κ2
N,O)cobalt(II)–water–N,N-dimethylformamide(1/2/1), C27H31N3O9Co
Authors: Gao Xiang , Tai Xi-Shi
Published: March 2022

C27H31N3O9Co, monoclinic, P21/n (no. 14), a = 10.9230(6) Å, b = 11.1166(8) Å, c = 22.8312(15) Å, β = 93.404(6)°, V = 2767.4(3) Å3, Z = 4, R

gt
(F) = 0.0349, wR

ref
(F
2) = 0.0893, T = 200 K.
Crystal structure of 3,3′-(pyridine-2,6-diylbis(methylene))bis(1-propyl-1H-imidazol-3-ium) ditetrafluoroborate, C19H27B2F8N5
Authors: Ywaya David O. , Friedrich Holger B. , Bala Muhammad D. , Soobramoney Lynette , Ibrahim Halliru
Published: March 2022

C19H27N5, orthorhombic Pbca (no. 61), a = 9.8515(12) Å, b = 16.508(2) Å, c = 29.817(3) Å, β = 90°, V = 4849.3(10) Å3, Z = 8, R

gt
(F) = 0.0409, wR
ref(F
2) = 0.1082.
One-pot multi-component synthesis of diverse bioactive heterocyclic scaffolds involving 6-aminouracil or its N-methyl derivatives as a versatile reagent
Authors: Singh Arvind , Kaur Bhupinder , Sharma Aditi , Priya Anu , Kaur Manmeet , Shamim Mussarat , Banerjee Bubun
Published: March 2022

The present review summarizes all the multi-component reaction strategies reported during last two decades for the synthesis of diverse bioactive heterocyclic scaffolds involving 6-aminouracil or its N-methyl derivatives.
Cognitive sensor systems for NDE 4.0: Technology, AI embedding, validation and qualification
Authors: Valeske Bernd , Tschuncky Ralf , Leinenbach Frank , Osman Ahmad , Wei Ziang , Römer Florian , Koster Dirk , Becker Kevin , Schwender Thomas
Published: March 2022

Cognitive sensor systems (CSS) determine the future of inspection and monitoring systems for the nondestructive evaluation (NDE) of material states and their properties and key enabler of NDE 4.0 activities. CSS generate a complete NDE 4.0 data and information ecosystem, i. e. they are part of the materials data space and they are integrated in the concepts of Industry 4.0 (I4.0). Thus, they are elements of the Industrial Internet of Things (IIoT) and of the required interfaces. Applied Artificial Intelligence (AI) is a key element for the development of cognitive NDE 4.0 sensor systems. On the one side, AI can be embedded in the sensor’s microelectronics (e. g. neuromorphic hardware architectures) and on the other side, applied AI is essential for software modules in order to produce end-user-information by fusing multi-mode sensor data and measurements. Besides of applied AI, trusted AI also plays an important role in CSS, as it is able to provide reliable and trustworthy data evaluation decisions for the end user. For this recently rapidly growing demand of performant and reliable CSS, specific requirements have to be fulfilled for validation and qualification of their correct function. The concept for quality assurance of NDE 4.0 sensor and inspection systems has to cover all of the functional sub-systems, i. e. data acquisition, data processing, data evaluation and data transfer, etc. Approaches to these objectives are presented in this paper after giving an overview on the most important elements of CSS for NDE 4.0 applications. Reliable and safe microelectronics is a further issue in the qualification process for CSS.
Development of a one-dimensional code for the initial design of a micro gas turbine mixed flow compressor stage
Authors: van Eck Hano , van der Spuy Sybrand J. , von Backström Theodor W.
Published: March 2022

The use of micro gas turbines (MGTs) for once-off and unique applications means that a rapid turnaround design process is required. The development of a MATLAB® application-based program for the initial design and performance analysis of radial and mixed flow compressors is discussed. The program code is based on one dimensional (1D) mean line flow and loss model theory. For verification, 18 test compressors were developed, covering a wide range of design velocities, mass flow rates and meridional exit angles. Predicted performance results were verified using Numeca/FINE™ Turbo software. Initial comparisons between 1D and Computational Fluid Dynamics (CFD) results did not match well. The 1D software over-predicted compressor performance and provided poor choke prediction. Consequently, empirical models to correct these deviations were derived and implemented into the 1D Application code. The updated 1D code provided a mean choke prediction difference of 1.59% compared to an initial 14.98% difference at the design point. Mean total-to-total isentropic efficiency and pressure ratio reduced to differences of 0.74 and 1.24% from values of 11.23 and 9.31% respectively.
Filmic Gold: The Elemental Aesthetics of the Klondike Gold Rush in Bill Morrison’s Dawson City: Frozen Time (2016)
Authors: Hess Linda M.
Published: March 2022

This contribution examines the elemental aesthetics of Bill Morrison’s documentary film Dawson City: Frozen Time (2016). The film traces connections between the birth of Dawson City as a boomtown of the Klondike Gold Rush in Yukon Territory in 1896 and the birth of cinema and the rise of the Hollywood movie industry, linking actual resource extraction (gold mining) to its discursive framing and mythologization (in Hollywood movies). Throughout the film, Morrison incorporates extracts of silent-film reels that were recovered from the permafrost below Dawson City in 1978 and that thus bear distinct marks of water damage that shape the aesthetic of Dawson City: Frozen Time. Through its comprehensive engagement of elemental materialities, Morrison’s film narrates the Klondike Gold Rush as a particular moment in the history of (North American) resource extraction. It invites analysis through the lenses of material and elemental ecocriticism, lenses that allow for understanding this moment within the vast network of profound transformations of the earth that have become known as the Anthropocene. The filmic composition itself prompts the audience to pay close attention to different elements—gold, earth, water, fire—that are crucially involved in both the Klondike Gold Rush and the film’s own history. Via this elemental focus, Morrison also creates a tension between the film’s elicitation of vicarious grief for the loss of the landscape and its evocation of irrevocable transformation as an ongoing process of human and elemental agency.
THE CONCEPT OF 'KUTEYNIK' IN RUSSIAN LITERATURE
Authors: Zapalsky Gleb
Published: March 2022

The article is dedicated to the notion of 'kuteynik', which spread around post-reform Russia. Explanatory, historical, dialect and other dictionaries, fiction literature, publicistic works and ego-documents are used as sources. Several concurrent processes associated with the evolution of this term in the 16th — 20th centuries are analyzed: the switch from neutral semantics to pejorative and the occasional return to neutral; its transition from church lexicon to vulgar, then to literary and at last to archaic language; the expansion of its meaning — from a certain churchman who cooked 'kutia' to all the lower-tier clerics and then to all clergy and the people with clerical roots. The history of this notion is analyzed in detail for the first time, not only in linguistic terms, but also in connection with social processes. The period of expansion of the term 'kuteynik' as pejorative (18th — early 20th centuries) was the time of clergy’s establishment as a class with hereditary traditions and isolated higher stratum (priests) and lower stratum (deacons and lower clerics) within it. Nobles, peasants and clerics used the notion of 'kuteynik' in different meanings. For the first two groups it was a pejorative term (for different reasons) and a marker of exclusion, while clerics could use it both as pejorative and as a neutral word. The author assumes that hereditary mechanisms created a demand for pejoratives that shifted the focus from the spiritual, pastoral clerical service to specific foods, It concentrated on everyday life, which had its specifics in the homogeneous social environment and was is contrast with the traditions of other strata.
Is the care for pregnant women with diabetes as good as it should be? a result of an audit on the care of women with gestational diabetes
Authors: Umaru Fadimatu Aliya , Muotune Andrew
Published: March 2022

Gestational diabetes (GDM) is the most common medical disorder in pregnancy.1 Pregnant women with this condition and their babies have increased risks in the antenatal, intrapartum and post-natal period and it also an impact on long term health.2 It is important to use a multi-disciplinary approach when caring for these patients to ensure the best outcomes.3
Viral Respiratory Infections in Hospitalized Children With Symptomatic Caregivers
Authors: Paquette Maude , Shephard Allyson , Bedard Pat , Thampi Nisha
Published: March 2022

OBJECTIVES

The burden of healthcare-associated viral respiratory infections (HAVRIs) among children is significant. While healthcare workers are often the focus for infection prevention strategies, little is known about the impact of sick caregivers and hospital visitors on the incidence of pediatric HAVRIs. The objective of this descriptive study was to determine the proportion of pediatric HAVRIs following contact with a sick caregiver or visitor.

METHODS

A retrospective chart review was performed of all HAVRIs that occurred between December 2017 and July 2019 in a pediatric tertiary care center. A HAVRI was defined as a laboratory-confirmed respiratory viral illness occurring more than 72 hours after admission.

RESULTS

Forty-four HAVRIs occurred in 37 patients during the study, predominantly among patients aged <24 months (n = 32, 72.7%) and with comorbidities (n = 42, 95.5%). For 9 HAVRIs (20.5%), contact with a sick caregiver (n = 8, 18.2%) or visitor (n = 2, 4.5%) in the 7 days before diagnosis was documented. In the 72 hours before HAVRI onset, 18 of the 44 patients (40.9%) were in a single-bed room and 6 of them (33.3%) were under additional precautions. Twelve patients (27.3%) had new or increased oxygen requirements and 4 (9.1%) were transferred to the ICU. There were no associated deaths.

CONCLUSIONS

Contact with a sick caregiver or visitor is a potential risk factor for acquiring a HAVRI. Our study reinforces the importance of engaging family caregivers in infection prevention and control strategies in pediatric care settings.
Youth Well-being During the COVID-19 Pandemic
Authors: Blackwell Courtney K. , Mansolf Maxwell , Sherlock Phillip , Ganiban Jody , Hofheimer Julie A. , Barone Charles J. , Bekelman Traci A. , Blair Clancy , Cella David , Collazo Shaina , Croen Lisa A. , Deoni Sean , Elliott Amy J. , Ferrara Assiamira , Fry Rebecca C. , Gershon Richard , Herbstman Julie B. , Karagas Margaret R. , LeWinn Kaja Z. , Margolis Amy , Miller Rachel L. , O’Shea T. Michael , Porucznik Christina A. , Wright Rosalind J.
Published: March 2022

OBJECTIVES

The family stress model proposes economic hardship results in caregiver distress and relational problems, which negatively impact youth outcomes. We extend this model to evaluate the impact of coronavirus disease 2019 pandemic-related family hardships on caregiver and youth stress, and, in turn, youth’s psychological well-being. We also investigate how social supports moderate this relationship.

METHODS

We used 2 samples of cross-sectional survey data collected between May 2020 and May 2021: children aged 2 to 12 years (n = 977) and adolescents aged 11 to 17 years (n = 669). Variables included pandemic-related family hardships, stress, social support, and youth life satisfaction. Data were analyzed using structural equation modeling.

RESULTS

Experiencing more pandemic-related family hardships was associated with increased caregiver and youth stress (b = 0.04 to 0.21, SE = 0.01–0.02) and, in turn, decreased youth life satisfaction (b = –0.36 to –0.38, SE = 0.04–0.07). Social connectedness (b^ = 0.11–0.17, SE = 0.04) and family engagement (b^ = 0.12–0.18, SE = 0.05–0.06) had direct positive associations with life satisfaction; for children aged 2 to 12 years, greater family engagement was associated with decreased effect of child stress on life satisfaction (b^ = 0.15, SE = 0.05). For adolescents, females had higher levels of stress compared with males (b^ = 0.40, SE = 0.6), and having anxiety and/or depression was associated with decreased life satisfaction (b^ = –0.24, SE = 0.11).

CONCLUSIONS

Caregivers and youth who experienced more coronavirus disease 2019 pandemic hardships had higher levels of stress, particularly adolescent females. Although stress negatively impacted life satisfaction across all ages, family engagement was a protective factor for children aged 2 to 12 years, whereas having anxiety and/or depression was a risk factor for adolescents. For all youth, however, being more socially connected and engaged with family promoted life satisfaction.
Sobre el espectro del digrafo (h, j) adjunto de un multidigrafo K–regular
Authors: Braicovich Teresa , Osio Elsa
Published: March 2022

En este trabajo se vincula la Teoría de Matrices con la Teoría de Grafos, en particular se trabaja con polinomios característicos de matrices de precedencia y con el espectro de digrafos (h, j) adjuntos. El mismo tiene como objetivo enunciar y demostrar, mediante representaciones matriciales adecuadas, un teorema que permite determinar los autovalores de un digrafo (h, j) adjunto de un multidigrafo k–regular, dándose las respectivas multiplicidades y también la forma de los autovectores asociados.
Impact Of Brand Equity On Consumer Purchase Decision: A Case Study Of Mobile Retailer In Hochiminh City, Vietnam
Authors: Nguyen Van Thuy Dr , Nguyen Thi Ngoc Anh BA , Ngo Thi Xuan Binh MA
Published: March 2022

The research’s goal was to examine the effect of brand equity on consumer purchasing decisions at Thegioididong store. This study was based on research on the decision-making process and brand equity. There were five factors such as brand awareness (BAW), Brand equity (BL), Brand association (BAS), percieved quality (PQ), and adverstising (AD). This study was used qualitative method and quantitative method in which a discussion group was conducted by 10 consumers and a survey with 40 consumers to test questionnaires. The primary survey was collected from 261 consumers who bought products at Thegioididong stores in Ho Chi Minh City, Vietnam by using a survey questionnaire. The results showed that brand loyalty, brand association and advertising were impacted on consumer purchase decision in which most influential factor was brand loyalty and the least impact factor was brand association. Brand awareness and perceived quality were not impacted on consumer purchase decisions. The findings of this study suggested that Thegioididong should improve image and focus on loyalty consumers to attract new consumers because loyalty consumers were ready to recommend Thegioididong.
The effect of brand equity on investor loyalty in online securities trading using the Technology Acceptance Model
Authors: Borirakcharoenkit Puncharat , Sukhabot Sasiwemon , Rinthaisong Idsaratt , Soonsan Nimit
Published: March 2022

The more equity a brand has, the stronger its behavioral loyalty, according to branding theory. This research adopted the technology acceptance model framework to explain the impact of brand equity on investors' loyalty in online securities trading. Our data was collected via a multi-method approach, and using a structured survey, the impact of brand equity on behavioral loyalty was tested. The findings indicate that brand equity impacts behavioral loyalty but does not influence mediators. This research also suggests that perceived ease of use and usefulness play an important role in mediating variables. Our findings impact retailers and brand owners in a variety of ways.
A IMPORTÂNCIA DO EDUCADOR AMBIENTAL EM TEMPOS DE PANDEMIA: UMA PERSPECTIVA SOCIAL E PARA SUSTENTABILIDADE
Authors: Matias Tális Pereira , Fraga Ligia de Almeida Gilioli , Masteghin Ligia Tambasco , Costa Vívian Ariane de Oliveira , Botezelli Luciana , Imperador Adriana Maria
Published: March 2022

Considerando a problemática associada a pandemia da COVID-19 no Brasil, o presente trabalho teve como objetivo destacar os principais desafios emergentes a serem superados pela sociedade e educadores ambientais para a minimização dos impactos da pandemia e promoção de um contexto pós-pandemia mais justo e equilibrado. Por meio de pesquisa qualitativa, através de consulta bibliográfica em plataformas especializadas como Scientific Electronic Library Online (SciELO) e Google Scholar, este artigo frisou a importância da conservação da biodiversidade e dos recursos naturais para reduzir as chances de ocorrência de novas doenças de origem zoonótica e discorrer sobre os desafios do educador ambiental. Verificou-se que é fundamental a articulação dos educadores ambientais em meios sociais para promover a Educação Ambiental e superar os desafios relacionados à acentuada desigualdade social no Brasil. Não obstante, faz-se necessária a união de esforços para promover a transformação social e melhoria da qualidade ambiental, evidenciando a necessidade de mudanças na administração pública e nos hábitos sociais. Concluiu-se que é urgente o desenvolvimento de uma nova cultura e modo de vida, capaz de ressignificar o paradigma vigente o qual representa um forte obstáculo ao desenvolvimento sustentável.
Retos para los estudiantes de seguridad y salud en el trabajo frente al mercado laboral en Colombia: “Cuando la vida te de limones, aprende a hacer limonada”
Authors: Vélez Estupiñan Mónica , Sánchez Vilma Katherine
Published: March 2022

En este trabajo se realiza una medición de la tendencia del mercado laboral para los estudiantes egresados con formación SST respecto a la cantidad de empresas que a 2021 cotizan al sistema general de riesgos laborales en Colombia para estimar la posibilidad de una sobreoferta de talento humano. Además, se analizan algunas prácticas a nivel empresarial que pueden afectar negativamente a los recién egresados, con el ánimo de plantear estrategias que les permitan transformar el panorama laboral respecto a su profesión.
LA CALIDAD DE VIDA LABORAL EN ÉPOCA DE PANDEMIA DEL PERSONAL DE PLANTA DE LA INSTITUCIÓN UNIVERSITARIA POLITÉCNICO GRANCOLOMBIANO DE LA SEDE MEDELLÍN 2020
Authors: Morales Sierra María Eugenia , Álvarez Barragán Luis Aníbal
Published: March 2022

En la actual crisis sanitaria fruto del Covid 19, las naciones enfrentan importantes desafíos en materia de salud pública y perdida de capacidades en su tejido empresarial. Las organizaciones pronostican cambios importantes en su cultura corporativa y sus prácticas productivas, que incluyen la adaptabilidad a una nueva normalidad que sugiere variaciones importantes en la calidad de vida laboral del talento humano. Este estudio diagnostica las condiciones de calidad de vida laboral de los colaboradores de planta de la Institución universitaria Politécnico Grancolombiano Sede Medellín en el 2020, en aspectos relacionados con la salud y el bienestar, la comunicación y las relaciones interpersonales, la facilidad y eficiencia con la que realizan sus labores cotidianas y la apropiación tecnológica para el trabajo remoto.  La metodología empleada para alcanzar los objetivos del estudio consistió en el diseño y aplicación de una encuesta elaborada por los investigadores en formato Google tipo Likert para la medición de percepciones, la cual consta de 27 preguntas agrupadas en cuatro dimensiones específicas; salud y bienestar, interacción social, facilidad y eficiencia y ambiente físico, que sugieren una respuesta fundamentada en el sentir de los encuestados al momento de su aplicación.  Se aplicaron 78 encuestas en un número similar de empleados de planta. Los resultados obtenidos del estudio diagnosticaron que el 31% de los funcionarios del Politecnico Grancolombiano sede Medellín sienten que las condiciones de salud y bienestar son muy favorables, el 45% de los mismos considera favorable la interacción social entre los miembros del equipo y entre los equipos y su jefes, un 45% demuestra favorabilidad  en las condiciones para realizar el trabajo con eficiencia y facilidad y un 64% siente que cuenta con los espacios y los equipos necesarios para realizar su trabajo en óptimas condiciones desde sus casas. En conclusión, las condiciones de calidad de vida laboral de los empleados de la Institución universitaria Politécnico Grancolombiano en la Sede Medellín son muy favorables, no obstante, es importante resaltar que un 66% de los funcionarios evaluados expresan un incremento importante en la carga laboral y un 58% sienten altos niveles de estrés, sin embargo, el 82% del personal de planta considera que la universidad actúa de manera responsable y adecuada en pro de atender las necesidades de bienestar social y la calidad de vida  de sus colaboradores.
Reflexiones educativas en tiempos de pandemia. ¿Origen de una transformación duradera?
Authors: Ávila Zárate Adriana Inés , Díaz Rueda Allan Amador , Osorio Valdés Lina María
Published: March 2022

Mucho se ha publicado sobre educación, especialmente la virtual, en tiempos de COVID 19. Una muestra de ello es que al buscar en Google Académico el operador booleano “Entornos virtuales de aprendizaje + pandemia” se encuentran 14600 resultados divulgados entre 2020 y 2021. En medio de esas discusiones Cohen-Granados y otros autores (2020) subrayan que el común denominador de los trabajos relacionados con el tema tratan sobre los incontables desafíos que demandó el cambio de la presencialidad hacia otras modalidades de estudio; didácticas, procedimientos administrativos, metodologías y estrategias de enseñanza y aprendizaje, recursos de diversos tipos y otros aspectos que aportan a la integración de la tecnología en el desarrollo de una cultura innovativa en los procesos educativos.
LOS EFECTOS DE LA CRISIS SANITARIA DEL COVID-19 EN LA EDUCACIÓN RURAL DE COLOMBIA
Authors: Mauris De la ossa Leonardo Alberto , Domínguez Gil Blanca Patricia
Published: March 2022

La crisis sanitaria causada por el COVID-19 provocó nuevos retos en la educación a nivel general. En lo particular, también obligó a repensar el tipo de formación que se impartía en las zonas rurales que, en el caso de Colombia, históricamente ha estado rezagada. En tal sentido, esta investigación pretende mostrar, de forma documentada, las condiciones pre-pandemia de las instituciones educativas del campo colombiano y de algunos componentes fundamentales para los procesos de enseñanza-aprendizaje. La metodología usada en este estudio fue la investigación documentada. Para ello se crearon cuatro variables de análisis desde las cuales se buscó, organizó y sistematizó la información recolectada. Estas variables fueron: infraestructura digital, formación docente, habilidades tecnológicas de los estudiantes y competencias de los acudientes. La indagación dejó como principal resultado la poca preparación en la que se encontraba la educación rural del país para enfrentar el modelo de educación en casa decretado por el gobierno nacional a causa de la pandemia por el COVID-19.
Quality of life and self-perceived health of adolescents in Middle School
Authors: Fernandes Graziela Nunes Alfenas , Lemos Stela Maris Aguiar
Published: March 2022

ABSTRACT Purpose Quality of life and self-perception of health are useful indicators for children and adolescents, as they are associated with objective and subjective states of health, including physical, cognitive, social, emotional, and environmental aspects. This study aims to characterize the adolescents at a Brazilian private financing school and to analyze the association between quality of life, health self-perception, and the sociodemographic profile. Methods This is a cross-sectional, observational study conducted with 124 elementary school students. The questionnaires of Characterization of the participants, Health Self-perception and Pediatric Quality of Life Inventory ™ (PedsQL™) were applied to the adolescents and, to the parents or guardians, the Brazil Economic Classification Criteria questionnaires and PedsQLTM. Results The majority of the participants were female, belonged to economy class A, declared to have excellent health self-perception, and attributed a good score for their health. The majority of parents and adolescents evaluated positively the physical, psychosocial, and overall quality of life dimensions. Having a positive health self-perception increased the chances of having a good quality of life and the increase of one year in age decreased the chances of the adolescent having a positive quality of life assessment. Conclusion The study of adolescence is essential to broaden the understanding of aspects related to the quality of life, both in its physical and psychosocial dimension and to self-perception. This knowledge will provide adolescents with an incentive for their well-being, better performance of their activities, and greater preparation for adult life.
Aplicação das Redes Neuronais Artificias para classificação das operações de perfuração: O caso de poços deepwater de Exploração e Produção
Authors:   ISCTE-IUL, Instituto Universitário de Lisboa, Chaile Valter , Moro Sergio ,   ISCTE-IUL, Instituto Universitário de Lisboa, Carneiro Aristides ,   Galp, Ramos Ricardo F. ,   CICEE - Centro de Investigação em Ciências Económicas e Empresariais
Published: March 2022

A aplicação de métodos automáticos para classificação de texto não estruturadas são extremamente valiosas para a indústria de Oil&Gas. A perfuração é uma operação que acarreta custos elevados que são proporcionais à duração das atividades. A classificação das diversas operações durante a perfuração é muito importante para gerar premissas de duração para o projeto de novos poços. Para este artigo, dois procedimentos independentes foram realizados para identificar o melhor modelo de NPT (Non-Productive Time) e PT (Productive Time). As conclusões apontam o modelo Multi-layer Perceptron (MLP) como o melhor modelo. O sistema de classificação pode ser utilizado para produzir um relatório preciso e detalhado sobre as atividades realizadas durante a perfuração de um poço. Através desse trabalho é possível concluir que os relatórios diários de perfuração atualmente disponíveis representam uma fonte rica de informação e podem ser utilizados para melhorar o processo de construção de poços de petróleo.
Can reason establish the goals of action? Assessing interpretations of Aristotle’s theory of agency
Authors: BERMÚDEZ JUAN PABLO
Published: March 2022

La interpretación de la teoría de la acción de Aristóteles ha tendido recientemente hacia una postura intelectualista, según la cual la razón está a cargo de establecer los fi nes de las acciones. Un resurgimiento del anti-intelectualismo, según el cual establecer los fi nes es tarea del carácter y no de la razón, ha puesto esta postura bajo crítica. Este ensayo sostiene que ninguna de las dos interpretaciones puede dar cuenta suficiente de las complejidades de la teoría de Aristóteles, y sugiere un camino intermedio que combina las fortalezas de ambas, evitando a la vez sus difi cultades. El problema crucial del intelectualismo es que Aristóteles asevera explícitamente que la razón no puede establecer los fines de la acción. El problema crucial del antiintelectualismo es que él también afi rma que la parte racional del alma debe guiar y gobernar la parte irracional. Bosquejo aquí el intelectualismo indirecto, una propuesta intermedia prometedora.
Reseña
Authors: PEREYRA ROZAS FELIPE
Published: March 2022

Realizar una introducción al pensamiento de Ludwig Wittgenstein no es una tarea que pueda llevarse a cabo sin difi cultades ni confrontaciones. No solo se trata del hecho de que la letra de Wittgenstein sea, para utilizar la famosa metáfora con la que Kant se refi riera a la metafísica, un “campo de batalla”. La interpretación de la obra de cualquier pensador de su envergadura es siempre el lugar de confl ictos. Por lo demás, puede decirse que esos mismos confl ictos son aquello de lo cual se alimenta la fi losofía, especialmente en las latitudes colonizadas donde la producción de pensamiento parece reducirse a un pie de página de lo que se escribe en los mal llamados “países centrales”. Por ello no resulta poco relevante señalar que la colección “Pensamientos locales”, en la que se inserta el título Wittgenstein. La fi losofía como ética de Samuel Cabanchik, nos ofrece el interesante proyecto de editar introducciones de autores ya consagrados por la tradición fi losófi ca pero realizadas por fi lósofos nacionales y dirigidas a un público amplio. La matriz de escritura que la editorial Quadrata en conjunto con la Biblioteca Nacional nos propone retomar es la del ensayo. Esta forma de intervención en el campo intelectual tiene una larga historia en el pensamiento de nuestro continente y ha tenido siempre la virtud de asumir una actitud polémica. Así, la clave ensayística en la que Cabanchik compone su Wittgenstein se instala fuera del mero comentario y se apropia tanto de la coyuntura intelectual actual como del objetivo de atravesar la elucubración académica en dirección a la confl uencia de los saberes teóricos y, por decirlo de alguna manera, el suelo en que vivimos nuestra vida. Por lo tanto, antes de realizar nuestro comentario al texto de Cabanchik hemos de reconocer una colección atenta a nuestra coyuntura y una introducción/ensayo que interviene frontalmente en ella. Su importancia radica en que no solo nos permite sacudirnos el polvo de voces lejanas y vetustas que leen a los “grandes autores” antes que nosotros, sino que también constituye una ocasión para mirarnos entre nosotros y conocernos a través de los maestros que hemos elegido y de la forma en que (felizmente) hemos elegido traicionarlos.
La enseñanza de la familia en los tiempos de la Ley de Educación Sexual Integral (26.150) en Argentina: tensiones entre representaciones, discursos y prácticas docentes
Authors: Berardi Melisa
Published: March 2022

Resumen: Objetivo. En el presente artículo se analizan los modos de enseñanza de la familia en el primer año en escuelas primarias de la ciudad de Mar del Plata. Metodología. A través de una metodología cualitativa se realizaron entrevistas a docentes, así como observaciones de clases en instituciones educativas.También se analizaron los recursos literarios utilizados por las maestras y los contenidos propuestos por el Ministerio Nacional de Educación en el marco de la Ley de Educación Sexual Integral (26.150). Resultados y conclusión. Es posible identificar una tensión entre las prácticas heterogéneas de las docentes y las propuestas promovidas por el Estado Nacional y Provincial. Asimismo, advertimos que la heterosexualidad entendida como norma se perpetúa no solo en los textos literarios, y en la mayoría de los discursos y las prácticas docentes, sino también en documentos diseñados por el Estado.
La mirada docente. Evaluación de la percepción del profesorado acerca de la participación e implicación familiar
Authors: Belmonte María Luisa , Sánchez Lorena , Galián Begoña
Published: March 2022

Resumen: Objetivo. La relación que debe existir entre familiaescuela es un hecho indiscutible en la comunidad científica y en la sociedad. Familia y centro, cada vez más, colaboran persiguiendo un mismo objetivo, pero ambos colectivos difieren a la hora de evaluar el compromiso con el desarrollo educativo y el contexto en general. Por ello, el propósito de este estudio es analizar la percepción docente sobre la participación e implicación familiar en un centroeducativo y su grado de disponibilidad ante proyectos de inclusión. Metodología. Para la recogida de información de esta investigación se ha utilizado un cuestionario de elaboración propia. Resultados y conclusiones. Los resultados extraídos muestran cómo el profesorado opina que las familias no suelen colaborar en el centro. A pesar de ello, señalan que estarían dispuestos a formar parte de proyectos de inclusión familiar.
Fecundidad, nupcialidad y pobreza en la región Atlántica colombiana 2015
Authors: Aguirre Barajas Yenni Mayerli
Published: March 2022

Resumen: Objetivo. Este artículo analiza la relación del índice de riqueza con la fecundidad y la nupcialidad para la región Atlántica Colombiana. La fuente sociodemográfica utilizada para la realización de este estudio es la Encuesta Nacional de Demografía y Salud (ENDS) de 2015. Metodología. Se basa en un análisis exploratoriodescriptivo de la relación existente entre las variables. Dentro de los cálculos usados se encuentra el número promedio de uniones y las tasas globales de Fecundidad por nivel de riqueza halladas por el método de Brass P/F. Resultados y Conclusión. Se observa la existencia de una relación entre la variable fecundidad y la nupcialidad; sin embargo, la diferencia entre el nivel de riqueza medio y rico está tendiendo a desaparecer, lo que lleva a suponer el comienzo de una postergación de la maternidad en las clases medias de la región Atlántica.