bluuebunny/crossref_metadata_2025 huggingface dataset:
Theoretical investigations on correlations between elastic behavior of Al-based alloys and their electronic structures
Authors: Liu Wen , Zhang Chi , Wang Chunge , Yan Xiang , Hu Xiaoxiong , Xu Pingjun , Ye Xinyu , Zhuang Zhongzhu , Liu Pengfei , Lei Shuyu
Published: August 2021

In this work, using the first-principles method, the alloying stability, electronic structure, and elastic properties of Al-based intermetallics were investigated. It was found that these alloys have a strong alloying ability and structural stability due to the negative formation energies and the cohesive energies. The valence bonds of these intermetallic compounds are attributed to the valence electrons of Cu 3δ states for AlCu3, Cu 3δ and Zr 4δ states for AlCu2Zr, and Al 3s, Zr 5s and 4δ states for AlZr3, respectively. Furthermore, the correlation between elastic properties of these intermetallic compounds and their electronic structures was revealed. The results show that structural parameters and elastic properties such as bulk modulus, shear modulus, Young’s modulus, Poisson’s ratio and anisotropy agreed well with experimental results.
Multiwave interaction solutions for a (3 + 1)-dimensional B-type Kadomtsev–Petviashvili equation in fluid dynamics
Authors: Cui Wenying , Liu Yinping , Li Zhibin
Published: August 2021

In this paper, a (3 + 1)-dimensional B-type Kadomtsev–Petviashvili (BKP) equation is investigated and its various new interaction solutions among solitons, rational waves and periodic waves are obtained by the direct algebraic method, together with the inheritance solving technique. The results are fantastic interaction phenomena, and are shown by figures. Meanwhile, any higher order interaction solutions among solitons, breathers, and lump waves are constructed by an N-soliton decomposition algorithm developed by us. These innovative results greatly enrich the structure of the solutions of this equation.
The incidence of different forms of ileus following surgery for abdominal birth defects in infants: a systematic review with a meta-analysis method
Authors: Eeftinck Schattenkerk Laurens D. , Musters Gijsbert D. , Nijssen David J. , de Jonge Wouter J. , de Vries Ralph , van Heurn L.W. Ernest , Derikx Joep P.M.
Published: August 2021

Objectives

Ileus following surgery can arise in different forms namely as paralytic ileus, adhesive small bowel obstruction or as anastomotic stenosis. The incidences of these different forms of ileus are not well known after abdominal birth defect surgery in infants. Therefore, this review aims to estimate the incidence in general between abdominal birth defects.

Content

Studies reporting on paralytic ileus, adhesive small bowel obstruction or anastomotic stenosis were considered eligible. PubMed and Embase were searched and risk of bias was assessed. Primary outcome was the incidence of complications. A meta-analysis was performed to pool the reported incidences in total and per birth defect separately.

This study represents a total of 11,617 patients described in 152 studies of which 86 (56%) had a follow-up of at least half a year. Pooled proportions were calculated as follows; paralytic ileus: 0.07 (95%-CI, 0.05–0.11; I
2=71%, p≤0.01) ranging from 0.14 (95% CI: 0.08–0.23) in gastroschisis to 0.05 (95%-CI: 0.02–0.13) in omphalocele. Adhesive small bowel obstruction: 0.06 (95%-CI: 0.05–0.07; I
2=74%, p≤0.01) ranging from 0.11 (95% CI: 0.06–0.19) in malrotation to 0.03 (95% CI: 0.02–0.06) in anorectal malformations. Anastomotic stenosis after a month 0.04 (95%-CI: 0.03–0.06; I
2=59%, p=0.30) ranging from 0.08 (95% CI: 0.04–0.14) in gastroschisis to 0.02 (95% CI: 0.01–0.04) in duodenal obstruction. Anastomotic stenosis within a month 0.03 (95%-CI 0.01–0.10; I
2=81%, p=0.02) was reviewed without separate analysis per birth defect.

Outlook

This review is the first to aggregate the known literature in order approximate the incidence of different forms of ileus for different abdominal birth defects. We showed these complications are common and the distribution varies between birth defects. Knowing which birth defects are most at risk can aid clinicians in taking prompt action, such as nasogastric tube placement, when an ileus is suspected. Future research should focus on the identification of risk factors and preventative measures. The incidences provided by this review can be used in those studies as a starting point for sample size calculations.
Kinematics of global mean thermosteric sea level during 1993–2019
Authors: İz H. Bâki
Published: August 2021

Because oceans cover 71% of Earth’s surface, ocean warming, consequential for thermal expansion of sea water, has been the largest contributor to the global mean sea level rise averaged over the 20
th
and the early 21
st
century. This study first generates quasi-observed monthly globally averaged thermosteric sea level time series by removing the contributions of global mean sea level budget components, namely, Glaciers, Greenland, Antarctica, and Terrestrial Water Storage from satellite altimetry measured global sea level changes during 1993–2019. A baseline kinematic model with global mean thermosteric sea level trend and a uniform acceleration is solved to evaluate the performance of a rigorous mixed kinematic model. The model also includes coefficients of monthly lagged 60 yearlong cumulative global mean sea surface temperature gradients and control variables of lunisolar origins and representations for first order autoregressive disturbances. The mixed kinematic model explains 94% (Adjusted R
2)1 of the total variability in quasi-observed monthly and globally averaged thermosteric time series compared to the 46% of the baseline kinematic model’s Adjusted R
2. The estimated trend, 1.19±0.03 mm/yr., is attributed to the long-term ocean warming. Whereas eleven statistically significant (α = 0.05) monthly lagged cumulative global mean sea surface temperature gradients each having a memory of 60 years explain the remainder transient global mean thermosteric sea level changes due to the episodic ocean surface warming and cooling during this period. The series also exhibit signatures of a statistically significant contingent uniform global sea level acceleration and periodic lunisolar forcings.
Kinematic GNSS positioning results compared against Agisoft Metashape and Pix4dmapper results produced in the San Joaquin experimental range in Fresno County, California
Authors: Berber M. , Munjy R. , Lopez J.
Published: August 2021

RTKLIB which is an open source Global Navigation Satellite Systems (GNSS) software has gained rapid acceptance among Surveying professionals thanks to recent developments in UAS (Unmanned Aerial System) technology. RTKLIB enables standard and precise point positioning (PPP) in real-time and post-processing modes to be performed. As such, UAS users utilize this software to analyze GNSS data collected by GNSS systems on UAS. By being versatile and free, RTKLIB is commonly used by many; however, it is not the only freely available GNSS software. There are also freely available online GNSS data processing software running on servers. These online GNSS data processing services provide data processing in static, kinematic and rapid static modes. Because UAS collect data in kinematic mode, in this study, kinematic data processing by aforementioned software (CSRS-PPP, GAPS and APPS) is analyzed. The results coming from these software are compared against the results produced by photogrammetric software (Agisoft Metashape and Pix4Dmapper). The aim of this practical project is to produce generalizable knowledge about the performance of these software. It is found out that RTKLIB and CSRS-PPP achieved cm-level precision. Yet, GAPS and APPS achieved dm-level precision both for horizontal and vertical coordinates. This study demonstrates the precision and accuracy expected from these software if they are used for kinematic GNSS data processing.
Semiprimeness of semigroup algebras
Authors: Guo Junying , Guo Xiaojiang
Published: August 2021

Abundant semigroups originate from p.p. rings and are generalizations of regular semigroups. The main aim of this paper is to study the primeness and the primitivity of abundant semigroup algebras. We introduce and studyD∗{{\mathcal{D}}}^{\ast }-graphs and Fountain matrices of a semigroup. Based onD∗{{\mathcal{D}}}^{\ast }-graphs and Fountain matrices, we determine when a contracted semigroup algebra of a primitive abundant semigroup is prime (respectively, semiprime, semiprimitive, or primitive). It is well known that for any algebraA{\mathcal{A}}with unity,A{\mathcal{A}}is primitive (prime) if and only if so isMn(A){M}_{n}\left({\mathcal{A}}). Our results can be viewed as some kind of generalizations of such a known result. In addition, it is proved that any contracted semigroup algebra of a locally ample semigroup whose set of idempotents is locally finite (respectively, locally pseudofinite and satisfying the regularity condition) is isomorphic to some contracted semigroup algebra of primitive abundant semigroups. Moreover, we obtain sufficient and necessary conditions for these classes of contracted semigroup algebras to be prime (respectively, semiprime, semiprimitive, or primitive). Finally, the structure of simple contracted semigroup algebras of idempotent-connected abundant semigroups is established. Our results enrich and extend the related results on regular semigroup algebras.
Several explicit formulas for (degenerate) Narumi and Cauchy polynomials and numbers
Authors: Qi Feng , Dağlı Muhammet Cihat , Lim Dongkyu
Published: August 2021

In this paper, with the aid of the Faà di Bruno formula and by virtue of properties of the Bell polynomials of the second kind, the authors define a kind of notion of degenerate Narumi numbers and polynomials, establish explicit formulas for degenerate Narumi numbers and polynomials, and derive explicit formulas for the Narumi numbers and polynomials and for (degenerate) Cauchy numbers.
Pathways to radicalization in adolescence: The development of ideological beliefs, acceptance of violence, and extremist behavior
Authors: Bliesener Thomas , Schröder Carl Philipp , Lehmann Lena
Published: August 2021

This paper examines the link between attitudes, the acceptance of violence and the performance of extremist acts. It is tested, if different ideologies of extremism develop commonalities in their positions, attitudes and structures. Data from a school survey of more than 6,700 9th grade students from Germany serves as the empirical basis. The results show among other things that different extremist ideologies (right-wing, left-wing, Islamism) covary on the level of attitudes, acceptance of violence and extremist behavior. In a further step of analysis, the theoretically based paths of initially extremist attitudes, then an additional approval of violence and finally the commission of extremist acts was examined approximately in a person-oriented approach. Except for one path, the analyses of radicalization patterns confirm a model that commences on the cognitive level, followed by the acceptance of deviant means to reach ideological goals and finally leading to extremist acts.
Evaluation of S-N curves including failure probabilities using short-time procedures
Authors: Acosta Ruth , Boller Christian , Doktor Markus , Wu Haoran , Jost Hanna , Weber Fabian , Starke Peter
Published: August 2021

In recent years, different short-time procedures have been developed that significantly reduce the experimental effort required to generate S-N curves and thus S-N databases. Methods like StressLife, StrainLife, and SteBLife are some of those which have shown enormous potential in this respect. In this contribution, the practicability of the SteBLife method is shown. Two S-N curve evaluation strategies based on temperature and magnetic field measurements are presented. These take statistical evaluation into account, describing a material’s scatter in terms of fatigue life. In order to demonstrate the versatility of the approach and to underline the advantages in terms of effort saved when compared to conventional procedures, the process on how to get the required information obtained is shown for three unalloyed and low-alloyed steels under different heat treatment conditions.
Optimal design and experimental investigation of teeth connection joint on a filament wound composite transmission shaft
Authors: Luo Rui , Li Yong , Huan Dajun , Wang Wuqiang , Wang Junsheng , Jiao Yang , Zhu Kang , Zhou Yan
Published: August 2021

For limited weight reduction and avoidance of composite damage caused by the press mounting of the traditional metal teeth press-fit joint, a novel teeth connection joint technique of the fiber wound composite transmission shaft was investigated by theoretical analysis, finite element simulation, and experiment verification. Based on the mechanics of composite materials, the expressions of equilibrium torsional stiffness and static torsional strength were derived. According to the three-dimensional Chang-Chang failure criterion, its finite element model of progressive damage analysis was established through the user material subroutine. Applying the fast curing resin system, a typical sample of the structure was prepared through co-curing for the static torsional strength test, and its failure details of the fracture surface were observed by using a scanning electron microscope, which confirmed the validity of theoretical and numerical results. Based on this, the influence of the ply method and geometric characteristics on the failure strength was studied, and the optimal design of the joint was realized by the genetic algorithm. Compared with the press-fit joint, this structure reduces weight by 70 % under the same joint strength, which provides a new way for the connection of the composite transmission shaft.
Mehrheitswahlen in Mehrpersonenwahlkreisen: Ein Schweizer Erfolgsrezept?
Authors: Eichenberger Reiner , Portmann Marco , Schafer Patricia , Stadelmann David
Published: August 2021

Die Schweiz gilt als wirtschaftlich und gesellschaftlich erfolgreich. Was steckt dahinter und was können andere Länder davon lernen? Eine verbreitete und mit moderner Ökonomie gut vereinbare Erklärung sind ihre besonderen politischen Institutionen mit direkter Demokratie und kleinräumigem Föderalismus. Tatsächlich aber hat die Schweiz eine dritte Institution, deren Rolle bisher verkannt wird: ihr Wahlsystem. Es beruht auf einer einmaligen Mischung von Verhältniswahlen und Mehrheitswahlen, wobei die meisten Parlamentssitze in Verhältniswahlen, aber die für viele Politiker attraktiveren Mandate in den Regierungen sowie im Ständerat in Mehrheitswahlen besetzt werden. Dabei finden die Mehrheitswahlen meist in Mehrpersonenwahlkreisen und nicht wie international üblich in Einpersonenwahlkreisen statt. Diese Mischung gibt den Parteien Anreize, für die Mehrheitswahlen weniger Kandidaten aufzustellen, als Sitze zu besetzen sind, und es veranlasst die ambitionierten Politiker, sich in der Mitte des politischen Spektrums zu positionieren. Als Folge werden zumeist Kandidaten aller großen Parteien gewählt und die Regierungen und Parlamentsdelegationen sind parteilich stark durchmischt, was eine entscheidende Ursache der für die Schweiz typischen „Konkordanz“ und hohen politischen Stabilität ist.
Comparison of biochemical and immunological biomarker levels of patients with COVID-19 with healthy individuals
Authors: Ercin Ugur , Turk Aribas Emel , Tuncbilek Semra , Kaya Canturk , Sepici Dincel Aylin , Bilgihan Ayse , Tekeli Mehmet Emin
Published: August 2021

Objectives

It was aimed to compare Alpha-1 antitrypsin (AAT), Alpha-1 acid glycoprotein (AGP), Total Immunoglobulin M (Total IgM), Total Immunoglobulin G (Total IgG), Galectin-3 (Gal3), and severe acute respiratory syndrome coronavirus 2 IgG (SARS-CoV-2 IgG) levels in patients with COVID-19 and healthy individuals.

Methods

The study included a total of 86 participants, 44 patients diagnosed with COVID-19 by real-time reverse transcription-polymerase chain reaction (rRT-PCR) test and 42 as the control group. AAT, AGP, Total IgM, and Total IgG levels were measured using the immunoturbidimetric method. Gal3 and SARS-CoV-2 IgG levels were measured using the chemiluminescent microparticle immunoassay method.

Results

AAT, AGP, Total IgG, Gal3, and SARS-CoV-2 IgG levels were found to be significantly higher in the patient group compared to the control group (p<0.001 for all tests). In the patient group, there was a moderate correlation between AAT-AGP and SARS-CoV-2 IgG-AAT (r=0.692; r=0.561, respectively).

Conclusions

High levels of AAT, AGP, Total IgG, Gal3, and SARS-CoV-2 IgG in the patient group and correlations between variables suggest that these parameters may be involved in the pathogenesis of the disease and provide an idea about the prognosis of the disease. However, new studies on this subject are needed in order to clearly reveal the laboratory tests related to the clinical course of the disease.
An archaeology of ‘Death Valley’, Poland
Authors: Kobiałka Dawid , Kostyrko Mikołaj , Wałdoch Filip , Kość-Ryżko Katarzyna , Rennwanz Joanna , Rychtarska Marta , Nita Daniel
Published: August 2021

This article presents the initial results of a multidisciplinary project aimed at documenting evidence of the genocide that took place on the northern outskirts of Chojnice, Poland, in the autumn of 1939 and in January 1945.
From antiquarianism to proto-archaeology: Philipp von Stosch (1691–1757) and the study of engraved gems
Authors: Gołyźniak Paweł
Published: August 2021

Examination of Philipp von Stosch's documentation of engraved gems, discovered in previously unknown archival sources in the Princes Czartoryski Museum in Krakow and other public and private collections, considerably advances our understanding of the move from antiquarianism to proto-archaeology in the eighteenth century.
O SOCIODRAMA COMO METODOLOGIA DA PESQUISA
Authors: Feijó Neide , Ferracini Lúcio
Published: August 2021

Realizamos uma pesquisa-ação junto aos estudantes de um Curso de Psicodrama, com o objetivo de conhecer as características valorizadas para um pesquisador. Com relação ao Sociodrama como método, evidenciamos a facilidade de recolher, analisar e validar os dados com o próprio grupo, paralelamente a uma análise crítica das informações obtidas. Consideramos que essa metodologia facilitou a reflexão, a tomada de decisões e construção de estratégias de enfrentamento para as situações que os próprios estudantes vivenciavam enquanto pesquisadores.
ROJAS-BERMÚDEZ’S NUCLEUS OF THE EGO THEORY AND ITS CORRELATION WITH IMAGODRAMA
Authors: Guimarães Leonídia Alfredo
Published: August 2021

The purpose of this article is to present a theoretical reading of the nucleus of the ego, closer to the theory of the identity matrix by J. L. Moreno, deeply developing the Rojas-Bermúdez’s concept of incipient ego. I associate this egoic experience with the relationships established between the baby and its family nucleus, right after recognizing a minimally stable ego, in neuropsychological conditions to link itself to the maternal, paternal and fraternal images. According to this reading, the nucleus of the ego completes its structuring at the age of four, following the Rojas-Bermúdez School, after carrying out the process of synthesis of this nuclear matrix, from which the natural ego emerges and, later, the social ego, as a product of the triangulation and circularization of roles. The image construction technique is the method that supports the theory in question.
UM ENCONTRO ENTRE PSICODRAMA E PSICOLOGIA ANALÍTICA: RITUAL E MITOPOESE
Authors: Cardoso Jr. Aroldo de Lara , Wahba Liliana Liviano
Published: August 2021

The bridge between Jung and Moreno has been an object of study to many contemporary psychodramatists. This article performs a narrative review of proposals at the interface between psychodrama and analytical psychology with the objective of developing a proposal for bringing psychodrama and analytical psychology closer together. Authors were found in the following countries: Argentina, Brazil, Switzerland, Spain, Italy, Germany, France and the United States. Based on this review, two categories which were found to be representative of the bridge between Jung and Moreno were elaborated: ritual and mythopoesis. The symbol is proposed as a central concept for an encounter between psychodrama and analytical psychology carried out in phenomenological experience.
O JOGO DRAMÁTICO EM SUPERVISÃO: DO DESENVOLVIMENTO DO PAPEL DO PSICOTERAPEUTA AO PROCESSO PSICOTERAPÊUTICO DO PACIENTE
Authors: Carvalho Maria Dulce Santiago de
Published: August 2021

From the relationship with the patient emerge feelings, doubts, fantasies, and fears that eventually escape from the inner world of a therapist. These are obstacles that often reflect blockages and fears, which also limit the release of the patient’s spontaneity. The article discusses the supervision with psychodramatic techniques as an element in the training and development of the therapist’s role, reporting a case study in the psychotherapeutic scope. Its objective is to highlight the dramatic game as a possibility of recognizing personal aspects of the supervisee that interfere in the psychotherapeutic process and the spontaneous-creative strategy of his interventions, integrating knowledge to the experiential dimension. The study concluded that the supervisee felt professionally safer, also recognizing the significant importance of the supervisor in this process.
Experimental static and seismic behaviour of glulam beam-to-column connection with screwed-in threaded rod joints
Authors: Yang Huifeng , Wang Chaochao , Hu Junbin , Tao Haotian , Liu Jiwei , Tang Liqiu , Shi Benkai
Published: August 2021

To evaluate the static and seismic behaviour of glulam beam-to-column connections with screwed-in threaded rods, nine specimens grouped in three were tested under both monotonic and reversed cyclic loads. The failure modes, moment resistance, initial rotation stiffness, ductility, and energy dissipation capacity of the developed connections were investigated. The results indicated that the developed beam-to-column connections showed superior structural performance. Furthermore, with the introduction of a steel bracket, the hybrid screwed-in threaded rod connection features larger stiffness, higher load-carrying capacity, remarkable ductility, and better energy dissipation capacity. The main failure modes included the yielding of steel brackets, as well as the yielding or rupture of the threaded rods, which indicated a ductile behaviour. The connection specimens with steel columns showed larger stiffness than those with glulam columns, which is reasonable for the bigger compressive deformation of glulam columns.
Effects of hydrophobic sizing on paper dry and wet-strength properties: A comparative study between AKD sizing of NBSK handsheets and rosin sizing of CTMP handsheets
Authors: Korpela Antti , Jaiswal Aayush Kumar , Asikainen Jaakko
Published: August 2021

Alkyl ketene dimer (AKD) and rosin sizing are used in papermaking to decrease paper’s tendency to absorb liquid water. Earlier information regarding the effects of internal sizing on paper dry strength is not consistent. In the present laboratory study, AKD sizing of handsheets made from Nordic bleached softwood pulp (NBSK), and rosin sizing of handsheets made from Nordic hardwood chemi-thermomechanical pulp (CTMP) were done via an internal sizing method, and by immersing handsheets in aqueous sizing agent dispersion. In the study, AKD sizing had no significant effect on the dry strength of NBSK handsheets. The result corresponds to practical experiences of papermakers. However, both AKD sizing methods resulted in a substantial and long-lasting increase of handsheet wet-strength. Unlike internal AKD sizing of NBSK handsheets, rosin internal sizing of CTMP handsheets resulted in decreased handsheet dry strength. The decrease indicates that, under the conditions present during the experiment, rosin sizing agents interfered with interfiber hydrogen bonding of CTMP fibers. Given that, in practice, no such undesired effects have been commonly linked to rosin sizing, the observed effect may be specific to sheet-making conditions. However, the effect of rosin sizing on strength properties and their variation cannot be ruled out completely.
A Modification of the Frechet Distance for Nonisomorphic Trees
Authors:   International Research and Training Centre of Information Technologies and Systems of the NAS and MES of Ukraine, Vololazskiy Yevgen V.
Published: August 2021

The paper presents a modification of the Frechet distance for nonisomorphic trees. While the classical Frechet distance between nonisomorphic trees is undefined, a new measure called similarity of a tree to a reference tree is given that is defined for a wider class of trees. A polynomial-time algorithm is given to determine whether one tree’s similarity to another is less than a given number.
Application Of The IoT Technology and Cloud Services for Radiation Monitoring
Authors:   V.N. Karazin Kharkiv National University, Svobody square, Terokhin Vitalii L. , Stervoyedov Mykola G. ,   V.N. Karazin Kharkiv National University, Svobody square, Ridozub Oleg V. ,   V.N. Karazin Kharkiv National University, Svobody square
Published: August 2021

Introduction. Cloud services are the most promising technologies for monitoring radiation pollution. They are a set of geographically distributed wireless sensor nodes designed to collect, sometimes pre-process, information about environmental parameters, as well as to transmit this information to remote users. Purpose. Development of basic methods for applying cloud services for IoT radiation and Environmental Research Technology. A comprehensive assessment of the state of the ecosystem, including its impact on humans, was carried out. At the same time, a promising direction is proposed, namely the integration of on-premises measuring devices with cloud services using M2M/IoT technology for remote measurement, the use of promising semiconductor sensors based on CdTe and CdZnTe radiation detectors, and modern microcontrollers. Methods. Use of methods Wi-Fi access point, control of the sensor network via a smartphone to transfer data parameters to the ThingSpeak cloud service. Results. When writing approaches to building cloud services, the composition of each sensor node and the task that it performs are considered, such as: the type of data collected, location, power sources, and the possibility of using certain protocols for data exchange relationships. Conclusion. The analysis of unified cloud services that include methods of designing information and measurement systems, methods of building machine-machine and human-machine interfaces, methods of designing sensor networks, methods of computer modeling of electronic circuits and systems, hardware emulation method (based on QEMU), methods of analysis, system analysis, synthesis, logical generalization of results. It includes selecting and connecting layout hardware, data module software that is developed in the ThingSpeak environment using the HTML markup language to describe the configuration web page.
The role of adipose tissue hormones in the formation and course of gastroesophageal reflux disease in combination with obesity.
Authors:   Kharkiv Medical Academy of Postgraduate Education, Oparin O.A. , Malіar O.M. ,   Kharkiv Medical Academy of Postgraduate Education, Oparina T.N. ,   Kharkiv Medical Academy of Postgraduate Education, Abakumova E.J. ,   Kharkiv Medical Academy of Postgraduate Education
Published: August 2021

Objective: To investigate the level of leptin in patients with gastroesophageal reflux disease with concomitant obesity and evaluate its effect on the course of the disease. Materials and results. The study involved 50 patients. The first group included patients with GERD with concomitant obesity, the second group — patients with GERD without concomitant pathology. A survey was conducted using the GERDQ questionnaire, which showed that patients with concomitant obesity were more likely to have symptoms of the disease. Leptin levels were determined by enzyme-linked immunosorbent assay. Іn subjects of group 1, the concentration of leptin will be significantly higher than in patients of group 2. An endoscopic study was performed, the results of which were compared with the concentration of leptin. There is a direct correlation between body mass index, the degree of esophageal damage and leptin levels.
Prevalence and Factors Associated With Youth Vaping Cessation Intention and Quit Attempts
Authors: Dai Hongying
Published: August 2021

OBJECTIVES

This study sought to examine the prevalence and factors associated with youth vaping cessation behaviors.

METHODS

Current (past 30-day) electronic-cigarette (e-cigarette) users from the 2020 National Youth Tobacco Survey (n = 1660, typically aged 11–18 years) were analyzed to examine the prevalence of youth intention to quit vaping, past-year quit attempts, and the frequency of quit attempts. Multivariable logistic or linear regressions were performed to assess the correlates with youth vaping cessation behaviors.

RESULTS

In 2020, 53.4% of current e-cigarette users reported intention to quit vaping and 67.4% reported having tried to quit vaping. Intention to quit was lower among female individuals (versus male individuals, adjusted odds ratio [aOR] = 0.7, P = .0004), users of a modifiable system (versus disposable e-cigarettes, aOR = 0.4, P = .0204), and dual or poly users (versus sole e-cigarette use, aOR = 0.7, P = .0144). e-cigarette harm perception was positively associated with intention to quit (aOR = 2.2, P < .0001) and past-year quit attempts (aOR = 1.6, P = .0037). Reasons for e-cigarette use were related to cessation behaviors. Adolescents who vaped because of curiosity had higher odds of past-year quit attempts (aOR = 1.4, P = .0306), whereas users to disguise vaping had a lower likelihood of intention to quit (aOR=0.4, P < .0001) and past-year quit attempts (aOR = 0.7, P = .0126). The average number of past-year quit attempts was 5.3, and it was lower among female individuals (versus male individuals), users of e-cigarettes with prefilled pods or cartridges (versus disposable e-cigarettes), and those with nicotine cravings (versus no nicotine craving).

CONCLUSIONS

Intention to quit vaping and past-year quit attempts are prevalent among US adolescent e-cigarette users. The study findings inform the development of multifaceted vaping cessation programs to take sex, e-cigarette devices, vaping reasons and patterns, harm perception, and nicotine dependence into account.
Determinantes de la inversión extranjera directa en Bolivia. Un enfoque institucionalista
Authors: Barrios Gutiérrez Juan Carlos
Published: August 2021

Este artículo se planteó con el fin de analizar los determinantes de la inversión extranjera directa (IED), en Bolivia, en sus dos periodos de inserción, que corresponden a dos paradigmas contrapuestos, los cuales, con sus peculiaridades, han logrado atraer flujos importantes de capital hacia las actividades extractivas, principalmente. El enfoque de la investigación corresponde al de la escuela neoinstitucionalista, que permite dilucidar el efecto de las instituciones sobre el comportamiento de la IED localizada en los sectores de la economía nacional. Para ello, se usaron las técnicas de datos panel. Los resultados muestran que instituciones del tipo “creadoras de mercado” solo han sido relevantes para la atracción del capital foráneo al sector primario exportador, mientras que los otros tipos de instituciones sí juegan un papel preponderante para la IED.
Devenires de la política social: conceptualizaciones y menciones sobre el consumo en los Programas de Transferencias Condicionadas de Ingresos
Authors: Dettano Andrea
Published: August 2021

El objetivo de este escrito es, a partir de un análisis documental, observar las conceptualizaciones y articulaciones que presentan los Programas de Transferencias Condicionadas con el Consumo (ptci). Los hallazgos se sintetizan en: escritos que mencionan los ptci como una modalidad que posibilita incrementar el consumo de los hogares; aquellos que asocian estos consumos con la dinamización del mercado y la economía; los que abordan los consumos que las transferencias habilitarían; y, por último, aquellos que abordan la financiarización que posibilitan. Se concluye que el consumo es un elemento de gran importancia en estos programas, que complejiza conceptualmente el objeto conocido como política social.
A dimensão trágica do indianismo
Authors: Bellas João Pedro
Published: August 2021

Este artigo dá continuidade à nossa abordagem do Romantismo brasileiro segundo o viés da estética. Temos demonstrado que o sublime é um elemento crucial para a formação não apenas dos movimentos românticos europeus como também para a sua contraparte brasileira. Nesse sentido, o objetivo deste trabalho é analisar o indianismo de Gonçalves Dias, com o fim de demonstrar que o poeta expôs uma faceta mais obscura do indianismo no Brasil, especialmente se compararmos com a obra de José de Alencar. Em nossa análise, buscaremos mostrar que, para tanto, o poeta fez um uso ostensivo de elementos comuns à estética do sublime.
Morada de Memórias em O canto dos escravizados
Authors: Santiago Ana Rita
Published: August 2021

Este artigo advém de um mapeamento elaborado sobre autoras moçambicanas (2016-2017), no âmbito de pós-doutoramento. Desta pesquisa, resultou o livro Cartografias em construção – Algumas escritoras de Moçambique (EDUFRB, 2019). O livro O canto dos escravizados (NANDYALA, 2018), de Paulina Chiziane, a moçambicana contadora de história, destaca-se neste texto. O seu foco discursivo agencia entendimentos sobre as baladas memorialísticas e a recorrência do mar como um ambiente de memórias inventadas por vozes e brados presentes na obra. O objetivo deste texto é apresentar algumas leituras descritivo-interpretativas dos “textos em versos”, como a autora caracteriza as narrativas, com ênfase na compreensão das odes como invenções de memórias do que se quer lembrado, mas também esquecido, relacionado com a escravidão de africanos(as) nas Américas. Espera-se, com este texto, o incentivo à leitura de O canto dos escravizados e o entendimento de que lembrar, semelhante aos “textos em versos”, pode significar um processo de imersão no passado, implicando esquecer e/ou revogar lembranças e inventar o tempo presente.
Mia Couto
Authors: Pereira José Paulo Cruz
Published: August 2021

O objetivo deste estudo é observar, na personagem de Diogo Santiago, – o autor intraficcional de O Mapeador de Ausências: o último romance da autoria de Mia Couto. – o modo como, na sua experiência de regresso aos lugares da sua infância – à cidade da Beira – luto e melancolia se jogam. A análise será aqui seguida pelos olhares de Freud, Judith Butler, Maria Torok, Nicolas Abraham, Marie Claude Lambotte e Jacques Derrida. Esta leitura extrai a sua justificação do facto de que, no romance: a) o escritor Diogo Santiago nos anuncia que lhe falta ainda fazer o luto de seus pais; e b) certos dos seus sintomas nele nos indiciam uma profunda melancolia. Beneficiando do facto de todo o arquivo policial de sua família, conservado pelo inspector da PIDE Óscar Campos – desde antes da prisão de seu pai, o poeta Adriano Santiago, em 1973 – lhe ter sido oferecido pela neta, Liana Campos, Diogo Santiago teria, finalmente, oportunidade de fazer o luto de seus pais através da sua escrita de um romance com o mesmo título do romance de Mia Couto: O Mapeador de Ausências.
Apresentação
Authors: Teixeiro Alva Martínez , Angelini Paulo Ricardo Kralik
Published: August 2021

---
Understanding juveniles’ problematic smartphone use and related influencing factors: A network perspective
Authors: Huang Shunsen , Lai Xiaoxiong , Li Yajun , Luo Yuhan , Wang Yun
Published: August 2021

Background and aims

To understand the interaction between problematic smartphone use (PSU) and related influencing factors (individual variables, family environment, and school environment) and to determine the most influential factors affecting the use of smartphones by juveniles to implement effective interventions in the future.

Methods

A total of 3,442 children and adolescents (3,248 actual participants (males = 1,638, average age = 12.27 ± 2.36)) were included in the study. This study measured juveniles’ PSU and its influencing factors: individual variables (4 factors), family environments (13 factors), and school environments (5 factors). This study employed a network analysis approach for data assessment.

Results

This study found that there were several central influencing factors (such as self-control ability, loss of control, parent-child relationship, and peer attitudes towards smartphone use) and bridge factors (such as peer attitudes towards smartphone use, peer pressure for smartphone use, and fear of missing out).

Discussion and conclusions

Juveniles’ PSU included several core symptoms and critical influencing factors. Intervention based on these factors may be effective, timely, and inexpensive.
Digital ecosystem as an instrument of digital transformation of the university
Authors: Neborsky Egor
Published: August 2021

Digital transformation is inevitable, regardless of the personal attitude of people to this issue. Researchers distinguish between organizational transformation using digital technologies (identity enhancement) and digital transformation (creating a new identity). In other words, digital technologies can become a tool for non-systemic transformations of existing structures, but thanks to understanding their nature, one can find ourselves in a situation of evolution of the structures themselves and, accordingly, the daily life of a person and social practices. The article proposes the concept of the digital ecosystem of the university as an instrument of digital transformation, which contributes to the development of the digital transformation methodology and can be used as the basis for the digital maturity index of the university and the development of a calculation formula. The research findings may be of interest to policymakers in charge of digital transformation policy at universities. The article reveals that in scientific periodicals the term "ecosystem" is interpreted in three semantic clusters: business ecosystem; innovative ecosystems; digital ecosystems. In this study, the concept of an ecosystem is interpreted in the context of digital transformation in relation to the digital environment of the university. The digital ecosystem is an instrumental concept, i.e. a means of digital transformation that reconstructs the environment and identity of the university. The digital ecosystem as a means of digital transformation, formulated by the author of the article, structurally contains the following elements: digital environment, which includes information and technical infrastructure; interaction participants (stakeholders); system of connections between participants; involvement of participants; the functions of the university reflected in the figure; idea and values, including regarding digital technologies; digital productivity and adequacy (implementation of digital solutions used by participants to maintain the ecosystem). A digital university is not only about having a network architecture or a digitally packaged educational product. It is also about the participants, their engagement, values and digital productivity. It should be borne in mind that if digital data is a raw material for the digital economy, then digital productivity becomes an important element of human digital activity.
Psychological and pedagogical prevention and correction of non constructive forms of behavior of primary schoolchildren
Authors: Kochneva Elena , Zaytseva Darya , Alimirzoeva Lutfiia
Published: August 2021

The article provides data from a theoretical analysis of studies of non-constructive forms of behavior of schoolchildren. Over the past few years, domestic and foreign scientists have noted a significant increase in the manifestation of aggressive tendencies in the school environment. An analysis of scientific psychological and pedagogical literature shows that most studies on aggressiveness and aggression, manifestations of violence in the educational environment are devoted to adolescence. If earlier aggressiveness was a characteristic feature of adolescence, then at present manifestations of aggressiveness are becoming relevant already for pupils of primary school age.
The problematic field of theoretical and applied research and its relevance is determined by the contradictions between: (a) the need of society indicated at the state level for the implementation of civil and spiritual and moral education of children, on the one hand, and insufficient theoretical and technological development of the problem of psychological and pedagogical prevention and correction of non-constructive forms elementary school behavior; (b) requirements for the formation of civil and spiritual and moral consciousness and the level of its scientific and methodological support in the education system; (c) the possibilities of developing an effective program of psychological and pedagogical prevention and correction of non-constructive forms of behavior of primary schoolchildren and its implementation in practice.
The purpose of the psychological research is to develop the theoretical and methodological foundations of the content and practical ways of introducing a model of psychological and pedagogical prevention and correction of non-constructive forms of behavior in younger students. In the theoretical and empirical part of the study, the authors use an integrated methodology, qualitative and quantitative research methods. An integrated approach makes it possible to design and test a model of psychological and pedagogical prevention and correction of non-constructive forms of behavior in younger students. This article presents the results of the search-theoretical stage of the study, which included first grade students (58 people), their parents and teachers.
The conducted theoretical and empirical research allowed to generalize well-known research projects on the problem of manifestation of aggression and aggressiveness, which were carried out by domestic and foreign scientists. Develop a program for diagnosing the forms and causes of the manifestation of aggression, aggressiveness and violence in children's school groups; to conduct a primary diagnosis of the severity of individual psychological characteristics of younger students
(self-esteem, anxiety and behavioral reactions in critical situations), which cause aggressive reactions in the behavioral repertoire of junior schoolchild
Militância profissional de enfermeiras no campo da formação em Enfermagem: versões e interpretações do Jornalismo
Authors: Laitano Aline Di Carla , Silva Gilberto Tadeu Reis da , Almeida Deybson Borba de , Santos Victor Porfirio Ferreira Almeida , Brandão Miller Fontes , Martins Ridalva Dias
Published: August 2021

RESUMO Objetivo analisar as versões e interpretações do Jornalismo sobre a militância profissional de enfermeiras no campo da formação em Enfermagem. Método estudo histórico, documental, de abordagem qualitativa, embasado na teoria da História Social e com tipificação argumentativa compreensivista. Os dados foram coletados entre setembro e outubro de 2017, em Salvador, Bahia, por meio do levantamento das notícias publicadas no jornal A Tarde, no período de 01/01/1970 a 31/12/1989. Foram identificadas 1.666 reportagens que versavam sobre as enfermeiras e, destas, foram utilizadas 16 reportagens, as quais abordavam a militância profissional no campo da formação em Enfermagem. A análise e a interpretação do material seguiram a proposta da Análise de Conteúdo, na modalidade Temática. Resultados os achados apontam para a militância profissional das enfermeiras em prol da formação universitária; para a formação técnica, compreendendo o pessoal técnico e auxiliar e para a qualificação profissional, abordando a formação complementar para além do ensino curricular da graduação. Conclusão e implicações para a prática as publicações evidenciaram o engajamento das enfermeiras contra o ensino universitário descontextualizado e com metodologias ultrapassadas, a luta pela qualificação dos trabalhadores de nível médio e a atuação militante das instituições representativas, que se utilizaram da mídia para comunicar a necessidade de mobilização da categoria em prol do desenvolvimento profissional.
Adesão ao autocuidado de pessoas com Diabetes Mellitus na Atenção Primária: estudo de método misto
Authors: Suplici Samara Eliane Rabelo , Meirelles Betina Hörner Schlindwein , Silva Denise Maria Guerreiro Vieira da , Boell Julia Estela Willrich
Published: August 2021

Resumo Objetivo elaborar um modelo interpretativo sobre a adesão ao autocuidado de pessoas com Diabetes Mellitus na Atenção Primária à Saúde. Método estudo de método misto realizado em quatro Unidades Básicas de Saúde. O estudo quantitativo transversal foi composto por 329 participantes, elegeram-se variáveis sociodemográficas e clínicas e o questionário de atividades de autocuidado. No estudo qualitativo, com 31 participantes, utilizou-se a vertente construtivista da Teoria Fundamentada nos Dados. Os dados foram analisados utilizando-se a estatística descritiva e a codificação inicial e focalizada. Resultados a maioria dos participantes é do sexo feminino, casada, com um a cinco anos de estudo, aposentada e com renda de um a três salários-mínimos. Obteve-se baixa adesão à alimentação saudável, à atividade física e ao monitoramento glicêmico. A adesão desejável foi relacionada ao uso de medicamentos e cuidados com os pés. Na etapa qualitativa, obteve-se como fenômeno: Enfrentando a complexidade do tratamento do Diabetes Mellitus e buscando o autocuidado. Este foi sustentado por duas categorias: Encontrando as dificuldades para seguir o tratamento e Valorizando os aspectos facilitadores do tratamento que deram subsídios para a elaboração do modelo. Conclusões e implicações para a prática foi elaborado um modelo interpretativo cujos elementos demonstram a complexidade do fenômeno e contribuem para a adesão ao autocuidado nessa população.
Amplificador de voz: efeitos na dose e na intensidade vocal de professoras sem disfonia
Authors: Souza Evelyn Vanessa Silva , Bassi Iara Barreto , Gama Ana Cristina Côrtes
Published: August 2021

RESUMO Objetivo Analisar a interferência do uso do amplificador de voz na dose vocal de professoras não disfônicas. Método Trata-se de um estudo experimental, comparativo intrassujeitos, composto por 20 professoras do ensino fundamental da Rede Municipal de Ensino de Belo Horizonte/MG. Após o consentimento as participantes, foram solicitadas a responder o questionário de Escala de Sintomas Vocais – ESV e posteriormente participaram de dois momentos do estudo, selecionados aleatoriamente. No primeiro momento as participantes utilizaram somente o dosímetro vocal e no segundo momento utilizaram o dosímetro vocal e o amplificador de voz. As medições foram registradas pelo aparelho durante 1h40m, na sala de aula que as professoras lecionavam. O espaço entre as duas medições foi de uma semana, sendo mantidas a mesma sala, mesmo horário e mesma disciplina lecionada, em ambos os momentos. Resultados O parâmetro intensidade foi o único que apresentou diferença com o uso de amplificação de voz. Conclusão O uso da amplificação de voz durante a docência de professoras não disfônicas não interfere nos parâmetros acústicos de frequência fundamental, e nas medidas de dose vocal. A intensidade da voz é menor quando o professor faz uso de amplificação vocal.