bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of mixing conditions and polymer particle size on the properties of polypropylene/graphite nanoplatelets micromoldings
Authors: Jiang Renze , Lashkari Piyush , Zhou Shengtai , Hrymak Andrew N.
Published: July 2022

In this study, properties of polypropylene/graphite nanoplatelets (PP/GNP) composites and corresponding micromoldings were systematically studied in terms of filler loading concentrations and mixing methods. PP of different forms, i.e., PP pellets and powders, were adopted to fabricate PP/GNP composites. Additionally, a comparative study of precoating GNP and PP powders using solvent-based solution blending and ultrasonication-assisted mixing was performed. Results showed that PP/GNP composites prepared using powder form PP resulted in at least one order of magnitude higher electrical conductivity than using pellet form PP and further reduced the percolation threshold from 12.5 to 10 wt%, which was related to the state of filler distribution within corresponding moldings. Morphology observations revealed that microparts prepared with powder-PP/GNP composites exhibited less preferential alignment of GNP particles along the flow direction when compared with those molded using pellet-PP/GNP counterparts, which was helpful in improving the overall electrical conductivity for PP/GNP micromoldings.
Two families of unravelled abstract regular polytopes in B𝑛
Authors: Nicolaides Robert , Rowley Peter
Published: July 2022

This paper exhibits two families of unravelled abstract regular polytopes in Coxeter groups of type

B
n

\mathrm{B}_{n}

.
For one family, they have rank 4, while the other family has arbitrarily large rank.
Performance of concrete thrust block at several burial conditions under the influence of thrust forces generated in the water distribution networks
Authors: Dawood Murtadha Hardan , Izzet Amer Farouq , Khudair Basim Hussien
Published: July 2022

This study was prepared to investigate the performance and behavior of concrete thrust blocks supporting pipe fittings. In the water distribution networks, it is always necessary to change the path of the pipes at different degrees or to create new branches. In these regions, an unbalanced force called the thrust force is generated. In order to counter this force, these regions are supported with concrete blocks. In this article, the system components (soil, pipe with its bend and thrust blocks) have been numerically modeled and simulated by the ABAQUS CAE/2019 software program in order to study the behavior and stability of the thrust block with different burial conditions (several burial depths) by the soil under the influence of the thrust force. Accordingly, 45° bend angles were studied with a specified pipe diameter placed on soil with known properties under the influence of internal hydrostatic test pressure. The obtained results that were relied upon to describe the behavior and stability of the block are (the lateral displacement of the block in the direction of the thrust force, as well as the vertical displacement of the block in addition to the Von Mises stresses transmitted by the block to the soil). It was concluded that the case in which the block is fully supported from its back side represents the optimum state of the block as it provides marginal sliding of the block and the least transmitted stress to the soil. It was also concluded that the transition from the first case (thrust block without soil behind it) to the second case (a quarter of the block is supported by soil), in which the maximum change in the performance of the concrete block was recorded, but after shifting to the other cases, the effect was reduced gradually.
Comprehensive assessment of cardiovascular disease risk in children with short stature due to isolated growth hormone deficiency: a case-control study
Authors: Gupta Saniya , Dayal Devi , Rohit Manoj Kumar , Gawalkar Atit A. , Raj Kumar Manish , Attri Savita Verma , Sachdeva Naresh , Kaur Harvinder
Published: July 2022

Objectives

Growth hormone deficiency (GHD) in adults is associated with an increased risk of cardiovascular morbidity and mortality. Although children with GHD are also believed to have a similar cardiovascular disease (CVD) risk beginning at an early age, the available data in children is scarce. We aimed to determine the various CVD risk parameters in children with isolated GHD (IGHD).

Methods

A cross-sectional case-control study was conducted at a tertiary care centre in North India comparing various auxological, biochemical, and echocardiographic parameters between 20 IGHD children aged 5–15 years and their age and sex-matched healthy controls.

Results

The mean age of children with IGHD and controls was similar (10.5 ± 2.6 yr vs. 9.9 ± 2.7 yr, p=0.48). Children with IGHD had significantly higher waist-hip-ratio (p=0.01), total cholesterol (p=0.02), non-high-density lipoprotein–cholesterol (p=0.02), serum homocysteine (p<0.001), C-reactive protein (CRP) (p=0.01) and pro-brain natriuretic peptide (pro-BNP) (p=0.04) levels as compared to healthy controls. Left ventricular mass (LVM) and interventricular septal thickness were significantly lower (p=0.04; p=0.02) in IGHD children. Correlation analysis showed that pro-BNP and CRP levels had negative correlation (p<0.001, r=−0.70; and p=0.04, r=−0.44, respectively) and LVM had a positive correlation (p=0.02, r=0.53) with height SDS among IGHD children.

Conclusions

Children with IGHD showed abnormalities in several biochemical and cardiac parameters that may be associated with an increased CVD risk in later life. More extensive studies, including younger children with IGHD, are needed to determine the lower ages at which the CVD risk is detectable.
Three pediatric cases of symptomatic hyponatremia in Prader–Willi syndrome
Authors: Oto Yuji , Murakami Nobuyuki , Nakagawa Ryo , Itoh Masatsune , Nagai Toshiro , Matsubara Tomoyo
Published: July 2022

Objectives

A recent large retrospective cohort study of cases of hyponatremia in Prader–Willi syndrome (PWS), conducted at nine reference centers, showed that severe hyponatremia was rare in PWS (0.5%); furthermore, all cases involved adults. Here, we describe three pediatric cases of severe hyponatremia in PWS, with neurological symptoms.

Case presentation

The cases involved two girls and one boy, and only one patient showed uniparental disomy. All patients had hyponatremia during infancy and presented with clinical symptoms, such as convulsions. All three patients improved with intravenous fluids and fluid restriction, with no sequelae.

Conclusions

We report three pediatric cases of symptomatic hyponatremia of unknown cause in PWS. In patients with PWS, especially those with neurological symptoms such as convulsions, it is necessary to take hyponatremia into consideration.
From pregnancy to breastfeeding: adequate maternal body mass index is essential to prevent a high body mass index in your children
Authors: Brand Caroline , Fochesatto Camila Felin , Villa-González Emilio , Silveira João Francisco de Castro , Dias Arieli Fernandes , Quevedo Alves Fernanda , Gaya Anelise Reis , Renner Jane Dagmar Pollo , Reuter Cézane Priscila
Published: July 2022

Objectives

To verify the associations between prenatal and perinatal factors with offspring body mass index (BMI) and the moderator role of maternal BMI in this relationship.

Methods

Cross-sectional study developed with 1,562 children and adolescents aged between 6 and 17 years, as well as their mothers, from southern Brazil. The prenatal and perinatal factors, weight, and height for the calculation of maternal BMI were self-reported. For the calculation of BMI, weight and height of the child/adolescent were measured on an anthropometric scale with a coupled stadiometer. Linear regression models were used for the moderation analysis. All analyzes were adjusted for the mother’s and child’s age, sex, sexual maturation, skin color/race, and educational level.

Results

cesarean as type of delivery (β=0.66; 95% CI=0.22 1.04; p=0.002) and pregnancy complications (β=0.60; 95% CI=0.15 1.04; p=0.002) were positively associated with offspring BMI. Schoolchildren who were breastfed for 4–6 months showed −0.56 kg/m2 of BMI (95% CI=−1.06–0.06; p=0.02). Birth weight was also associated with BMI, with low weight being inversely (β=−0.59; 95% CI=−1.03–0.15; p=0.008), while overweight was positively related (β=0.84; 95% CI=0.08 1.60; p=0.02). The moderation analysis indicated a positive interaction between the mother’s BMI and cesarean, pregnancy complications, and smoking with the offspring’s BMI. On the other hand, there was an inverse association between breastfeeding from 7 to 12 months and the offspring BMI, only in mothers with high BMI.

Conclusions

Adequate maternal BMI is essential to prevent a high BMI in their children, especially when considering the influence of prenatal and perinatal risk factors.
A cross-linguistic comparison of reference across five signed languages
Authors: Ferrara Lindsay , Anible Benjamin , Hodge Gabrielle , Jantunen Tommi , Leeson Lorraine , Mesch Johanna , Nilsson Anna-Lena
Published: July 2022

Do signers of different signed languages establish and maintain reference the same way? Here we compare how signers of five Western deaf signed languages coordinate fully conventionalized forms with more richly improvised semiotics to identify and talk about referents of varying agency. The five languages (based on a convenience sample) are Auslan, Irish Sign Language, Finnish Sign Language, Norwegian Sign Language, and Swedish Sign Language. Using ten retellings of Frog, Where Are You? from each language, we analyze tokens of referring expressions with respect to: (a) activation status (new vs. maintained vs. re-introduced); (b) semiotic strategy (e.g., pointing sign, fingerspelling, enactment); and (c) animacy (human vs. animal vs. inanimate object). Statistical analysis reveals many similarities and some differences across the languages. For example, signers of each language typically used conventionalized forms to identify new referents, and less conventional strategies to maintain and reintroduce referents. Differences were mainly observed in relation to the patterning across animacy and activation categories and in the use of fingerspelled words from ambient spoken/written languages. We suggest that doing reference in these signed languages involves both signed language-specific and ecology-specific strategies. The latter may be attributed to the different social and historical trajectories of each language.
Observation of nonlinearity-controlled switching of topological edge states
Authors: Arkhipova Antonina A. , Ivanov Sergey K. , Zhuravitskii Sergey A. , Skryabin Nikolay N. , Dyakonov Ivan V. , Kalinkin Alexander A. , Kulik Sergey P. , Kompanets Victor O. , Chekalin Sergey V. , Kartashov Yaroslav V. , Zadkov Victor N.
Published: July 2022

We report the experimental observation of the periodic switching of topological edge states between two dimerized fs-laser written waveguide arrays. Switching occurs due to the overlap of the modal fields of the edge states from topological forbidden gap, when they are simultaneously present in two arrays brought into close proximity. We found that the phenomenon occurs for both strongly and weakly localized edge states and that switching rate increases with decreasing spacing between the topological arrays. When topological arrays are brought in contact with nontopological ones, switching in topological gap does not occur, while one observes either the formation of nearly stationary topological interface mode or strongly asymmetric diffraction into the nontopological array depending on the position of the initial excitation. Switching between topological arrays can be controlled and even completely arrested by increasing the peak power of the input signal, as we observed with different array spacings.
Exploration of the dynamics of hyperbolic tangent fluid through a tapered asymmetric porous channel
Authors: Naduvinamani Neminath Bujjappa , Guttedar Anita Siddayya , Shankar Usha , Basha Hussain
Published: July 2022

The present physical problem has a significant number of applications in intra-uterine fluid motion with tiny particles in a nonpregnant uterus, and this situation of fluid motion is very important in examining the embryo motion in a uterus. Due to these real-life applications, in the current investigation, a perturbation-oriented numerical investigation has been performed to describe the characteristics features of velocity, pressure rise, and trapping bolus through streamlines in a tapered channel under a porous medium. The present physical model results in the governing two-dimensional coupled nonlinear flow equations under low Reynolds number and long-wavelength approximations. A suitable equation for stream function is derived and a regular perturbation scheme is employed to produce the numerical solutions in terms of pressure rise, velocity, and streamlines for various values of physical parameters. The current investigation depicts that the enhancing Darcy parameter upsurged the pressure field, and the increasing power-law index suppressed the pressure field in the flow regime. The rincreasing channel width significantly diminished the velocity field at the central portion of the channel. The size of the trapping bolus suppressed for the enhancing values of Weissenberg number. In addition, the size of the trapping bolus increased for the magnifying values of wave amplitudes. Finally, current numerical solutions reasonably agree with the previously published results in the literature, and this fact confirms the accuracy of the present problem.
A meta-analysis of the risk of salivary gland tumors associated with mobile phone use: the importance of correct exposure assessment
Authors: Vijayan Keshini , Eslick Guy D.
Published: July 2022

Objectives

To investigate the risk of developing salivary gland tumors associated with the use of mobile phones.

Content

There have been a number of epidemiological studies conducted to assess for a possible association between mobile phone usage and the development of intracranial tumours, however results have been conflicting. We conducted an extensive literature search across four different databases was conducted. After selecting the articles relevant to the area of study, a total of seven studies were included in this meta-analysis, with no restrictions set on publication date or language. Studies were qualitatively assessed using the Newcastle-Ottawa scale. No significant association between the use of mobile phones and salivary gland tumors was observed (OR=1.06, 95% CI=0.86–1.32). No evidence for publication bias was detected.

Summary and Outlook

Our findings indicate no significant association between mobile phone usage and salivary gland tumours. However, there were many limitations encountered in these studies, suggesting that the observed result may not be an accurate estimate of the true carcinogenic risk of mobile phones, especially for heavy long-term users. In fact, the studies included in this meta-analysis highlight the need to correctly define exposure assessment in order to ascertain the risk of a certain variable.
Predictive models for the incidence of Parkinson’s disease: systematic review and critical appraisal
Authors: Chen Yancong , Gao Yinyan , Sun Xuemei , Liu Zhenhua , Zhang Zixuan , Qin Lang , Song Jinlu , Wang Huan , Wu Irene X.Y.
Published: July 2022

Numerous predictive models for Parkinson’s disease (PD) incidence have been published recently. However, the model performance and methodological quality of those available models are yet needed to be summarized and assessed systematically. In this systematic review, we systematically reviewed the published predictive models for PD incidence and assessed their risk of bias and applicability. Three international databases were searched. Cohort or nested case-control studies that aimed to develop or validate a predictive model for PD incidence were considered eligible. The Prediction model Risk Of Bias ASsessment Tool (PROBAST) was used for risk of bias and applicability assessment. Ten studies covering 10 predictive models were included. Among them, four studies focused on model development, covering eight models, while the remaining six studies focused on model external validation, covering two models. The discrimination of the eight new development models was generally poor, with only one model reported C index > 0.70. Four out of the six external validation studies showed excellent or outstanding discrimination. All included studies had high risk of bias. Three predictive models (the International Parkinson and Movement Disorder Society [MDS] prodromal PD criteria, the model developed by Karabayir et al. and models validated by Faust et al.) are recommended for clinical application by considering model performance and resource-demanding. In conclusion, the performance and methodological quality of most of the identified predictive models for PD incidence were unsatisfactory. The MDS prodromal PD criteria, model developed by Karabayir et al. and model validated by Faust et al. may be considered for clinical use.
The End of Silencing? Dealing with Sexualized Violence in the Context of the Kosovo Conflict (1998/99–2019)
Authors: Zeidler Kathleen
Published: July 2022

This study deals with sexual violence in the Kosovo conflict. Adopting a broad timeframe from 1998/99 to 2019 it analyses the discourse about sexual violence and considers the actors involved, focussing on practices of silencing and “un-silencing”. In 1998/99 international actors, particularly NATO member states, brought sexual violence into their narrative to justify military intervention. It was not until 2012, after more than a decade of silence, that conflict-related sexual violence began to be integrated into the narrative of heroism and victory in Kosovo itself. The author highlights particular turning points of the breaking of silence about wartime sexual violence when for the sake of certain political interests it came to be presented as a threat to the nation. Finally, she shows that aspects of gender hierarchization were hidden, which contributed once again to the reimposition of silence on individual survivors of sexual violence.
A Battle for Remembrance? Narrating the Battle of Košare/Koshare in Belgrade- and Pristina-Based Media
Authors: Jovanović Jelena
Published: July 2022

This article examines the memory of the Battle of Košare/Koshare fought between the Yugoslav Army and Kosovo Albanian forces during the NATO intervention of 1999. The analysis is based on articles from the daily press published in Belgrade and Pristina on the anniversaries of the battle during the last two decades. The author focuses on how the narratives of the same event have been generated in the respective media, as well as their main characteristics and functions. Finally, she addresses the tensions among different memory actors who engaged in reshaping the narratives of the battle, generating both exclusive and intersectional traits in the diverging narratives of the Battle of Košare/Koshare. Thereby she sheds a comparative light on commemorative practices and memory politics of Kosovo and Serbia, while also bringing new insights into the transitional justice process.
British Borders and/in East Africa: World War II and Multidirectional Memory in Nadifa Mohamed’s Black Mamba Boy
Authors: Lammers Lukas
Published: July 2022

The British myth of World War II has long been successfully mobilised to police the ideological borders of the UK. The article considers narratives about the war as a key site for the negotiation of British identity and the UK’s relation to its imperial past. It, first, seeks to unpack some of the contradictions of the dominant British view on the war to then consider the 2010 novel Black Mamba Boy by Somali-British writer Nadifa Mohamed. It is argued that the novel effectively opposes ideas of an ethnically homogenous nation. Drawing on Michael Rothberg’s notion of multidirectional memory, the article shows how the novel interweaves different traumatic histories and thus presents memories of the war as an opportunity, not to consolidate national borders, but to forge new solidarities.
Schwann cell precursors represent a neural crest‐like state with biased multipotency
Authors: Kastriti Maria Eleni , Faure Louis , Von Ahsen Dorothea , Bouderlique Thibault Gerald , Boström Johan , Solovieva Tatiana , Jackson Cameron , Bronner Marianne , Meijer Dies , Hadjab Saida , Lallemend Francois , Erickson Alek , Kaucka Marketa , Dyachuk Viacheslav , Perlmann Thomas , Lahti Laura , Krivanek Jan , Brunet Jean‐Francois , Fried Kaj , Adameyko Igor
Published: July 2022

Schwann cell precursors (SCPs) are nerve‐associated progenitors that can generate myelinating and non‐myelinating Schwann cells but also are multipotent like the neural crest cells from which they originate. SCPs are omnipresent along outgrowing peripheral nerves throughout the body of vertebrate embryos. By using single‐cell transcriptomics to generate a gene expression atlas of the entire neural crest lineage, we show that early SCPs and late migratory crest cells have similar transcriptional profiles characterised by a multipotent “hub” state containing cells biased towards traditional neural crest fates. SCPs keep diverging from the neural crest after being primed towards terminal Schwann cells and other fates, with different subtypes residing in distinct anatomical locations. Functional experiments using CRISPR‐Cas9 loss‐of‐function further show that knockout of the common “hub” gene Sox8 causes defects in neural crest‐derived cells along peripheral nerves by facilitating differentiation of SCPs towards sympathoadrenal fates. Finally, specific tumour populations found in melanoma, neurofibroma and neuroblastoma map to different stages of SCP/Schwann cell development. Overall, SCPs resemble migrating neural crest cells that maintain multipotency and become transcriptionally primed towards distinct lineages.
Оздоровчо-профілактична спрямованість фізичного виховання студентської молоді
Authors: Палієнко Ольга , Іваненко Оксана
Published: July 2022

Мета дослідження – теоретично обґрунтувати доцільність комплексної оцінки рухової підготовленості та рівня соматичного здоров’я як засобу індивідуалізації навчального процесу з фізичного виховання студентів. У статті висвітлені сучасні проблеми зміцнення і збереження здоров’я студентської молоді. Висвітлені пріоритетні напрямки оцінки соматичного здоров’я та фізичної підготовленості студентів, використання інноваційних методів фізичної культури з оздоровчою метою, так як недоліки в організації фізичного виховання у вишах не відповідають нормі, яка б забезпечувала оптимальний рівень здоров’я студентів. Проаналізована диференційована система оцінки рухової підготовленості та фізичного здоров’я молоді, що базується на врахуванні рівня їхнього здоров’я.
Calix[4]arene chalcone amide C-1011 elicits differential effects on the viability of 4T1 mouse breast adenocarcinoma cells with different levels of adaptor protein Ruk/CIN85 expression
Authors:   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Babich L. G. , Shlykov S. G. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Yesypenko O. A. ,   Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv;, Bavelska-Somak A. O. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Zahoruiko A. G. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Horak I. R. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Drobot L. B. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Kosterin S. O. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;
Published: July 2022

According to our earlier data, calix[4]arene chalcone amides modulate Ca ions exchange in the myometrium mitochondria and the level of inner membrane polarization that can potentially affect cell survival. To test this hypothesis, we studied the effect of calix[4]arene with 4 chalcone amide groups on mitochondria membrane polarization and viability of 4T1 mouse breast adenocarcinoma cells, a surrogate model of human triple-negative breast cancer, and on its highly malignant subline overexpressing the adaptor protein Ruk/CIN85. Mitochondria membrane potential was measured by flow cytometry, and cell viability was assessed using Trypan blue dye exclusion. It was shown that mitochondrial membranes of control (Mock) cells had a higher polarization level (67.80 ± 8.82 r.u., n = 5) compared to 4T1 cells with up-regulation of Ruk/CIN85 (RukUp cells) (25.42 ± 2.58 r.u., n = 4). Upon incubation of cells with 1 μM calix[4]arene C-1011, the CCCP-sensitive component of mitochondrial membranes polarization decreased (by almost 50%) in 4T1 Mock cells and did not change in RukUp cells compared with the control. It was demonstrated that 1 μM calix[4]arene C-1011 suppressed the viability of 4T1 Mock cells by 45%, but did not affect RukUp cells considerably. It was suggested that calix[4]arene chalcone amide С-1011 decreased mouse breast adenocarcinoma 4T1 cell viability­ at least by affecting mitochondrial membrane polarization.The data obtained indicate the prospects of further studies of calix[4]arene chalcone amide as a potential anticancer drug candidate.
Nomination of a hunting object in the Komi language
Authors: Rakin Anatoly N.
Published: July 2022

Introduction. The paper deals with two components of the hunting vocabulary, namely large wild animals, and medium-sized forest dwellers. Each component sub-defines the nominative units related to predators and herbivores are distinguished and separately considered in the paper. In the first part of the study, the composition is determined and a brief description of the relevant representatives of the local commercial fauna in the Komi Territory is given. The second part presents a diachronic hierarchy of the analyzed primordial vocabulary, compiled on the basis of the classification of proto-linguistic reconstructions. Materials and Methods. The analyzed material refers mainly to the Komi literary language. The paper considers the names of both native and foreign-language origin. The main methods used by the author in developing the research topic are descriptive, comparative-historical, synchronous-comparative and statistical. Results and Discussion. For the first time the article presents a linguistic analysis using the biological classification of two lexical subgroups belonging to one of the microsystems of the hunting vocabulary in the Komi language. It was established that the object of the study has ancient origins and the designations of primordial origin make its basis. In the composition of this variety of hunting vocabulary it presents Proto-Finno-Ugric, Proto-Finno-Permian, Proto-Permian and Proto-Komi vocabulary. A group of late formations having no genetic correspondences in other related languages appeared in the period of independent existence of the Komi-Zyryan language, after its separation from the Komi-Permian language. The foreign language component belongs to early and late borrowings. The technology of developing this topic, created by the author of the paper, can be used in the material of other related and unrelated languages. Conclusion. The formation and development of the Komi language vocabulary related to large commercially hunted animals and medium-sized wild animals has been going on for many millennia, since the Proto-Finno-Ugric epoch. Most of the names of the analyzed microsystem belong to the primordial vocabulary fund of the Komi language. A foreign-language component consisting of borrowings from 5 external sources took part in its replenishment.
Vocational education institutions of the sphere of education and culture in the European North of Russia in the 1950s – 1980s
Authors: Matsuk Alexander M.
Published: July 2022

Introduction. The Soviet system of education and cultural services for the population needed substantial number of personnel, which included preschool teachers, primary school teachers, librarians, and club workers. These mid-level specialists were trained mainly by regional colleges. The article presents a study of the vocational educational institutions that trained specialists for educational and cultural institutions, as part of the system of vocational education in the European North of Russia.
Materials and Methods. The research is based on the principles of research objectivity, historicism and reliability. The main research methods applied for the archival documents and statistical materials were statistical analysis and comparison.
Results and Discussion. The analysis of the statistical data used in the study made it possible to compile registers of vocational educational institutions that trained specialists for the field of education and culture in the European North of Russia in the 1950s – 1980s. Based on the information available in the central and regional statistical collections, as well as in the statistical reporting of the vocational educational institutions under consideration, it was possible to trace the dynamics of the number of students and graduates of technical schools and schools in the field of education and culture, to identify shares in the total number of students and graduates of all secondary specialized educational institutions by regions of the European North of Russia, including two Finno-Ugric republics, Karelian and Komi.
Conclusion. The reform of vocational education in the 1950s had a negative impact on the number of trained specialists in the field under study. In the future, their number increases significantly, which indicates the progressive development of colleges in the studied area. Despite the positive dynamics of the number of students and graduates, their share in the total number throughout the system of secondary specialized education in the European North of Russia remains at a low level. Nevertheless, the positive vector of the dynamics of their numbers indicates the demand for specialists of this profile in the national economy of the studied regions, as well as the Finno-Ugric republics located within the boundaries of the territory of the European North of Russia.
Recent Advances in Research and Development to Increase Shelf Life and Safety of Packaged Foods
Authors: Montero-Prado Pablo , Ruiz Morales Giancarlo Antonio
Published: July 2022

Introducción. El envasado de alimentos ha jugado un papel importante y variado, siempre de acuerdo con los requisitos y exigencias del mercado. Actualmente, estas necesidades se centran en el objetivo de tener alimentos seguros e inocuos durante el mayor tiempo posible. Para ello, se ha ampliado el estudio y desarrollo de nuevas tecnologías para el envasado de alimentos, que proporcionan las condiciones y características necesarias para alcanzar el objetivo propuesto. Objetivo. Presentar los avances más recientes en el campo del envasado de alimentos (activo e inteligente), incluyendo las perspectivas del impacto económico alcanzado y su correspondiente proyección futura. Desarrollo. Este trabajo presenta diferentes técnicas y criterios que se consideran utilizados para proponer el concepto de envasado activo, que cuenta con las condiciones necesarias para el suministro o supresión de sustancias o componentes generados en el mismo y que contribuyen a la conservación y deterioro de los alimentos contenidos. Al mismo tiempo, se presenta la tecnología conocida como embalaje inteligente, dotada de los recursos necesarios para monitorizar, e interpretar el estado interno del envase, comunicando esta situación fuera del mismo. En ambos casos, se promueve el uso de agentes o compuestos de origen natural para minimizar sus implicaciones sobre la salud y la modificación de los alimentos implicados. Conclusiones. La generación de envases activos e inteligentes requiere una evaluación individual de cada alimento específico, frente a los componentes utilizados. Conocer las concentraciones, según la característica que se requiera controlar, y así, comprender las posibles interacciones que se pueden producir entre el contenido y el recipiente que lo contiene.
Dynamic modeling of flow in combined sewer network using the mouse model
Authors: Wittmanová Réka , Hrudka Jaroslav , Marko Ivana , Raczková Andrea , Stanko Štefan
Published: July 2022

Dynamical modeling in water supply and treatment and wastewater treatment helps to understand the flow in the networks. Therefore, it is important to incorporate dynamic modeling into the design and assessment processes and operation for the future of urban drainage systems.

The aim of this paper was using a mathematical model to analyze the functionality of combined sewer networks during a precipitation event on 13 October 2020. The analysis was performed based on the results from the assessment of the hydraulic capacity of the sewer network using the MOUSE model in the MIKE URBAN software. This study results that the evaluated sewer network does not fulfill his purpose during heavy rainfall events.
Identification of online harassment using ensemble fine-tuned pre-trained Bert
Authors: Ganie Aadil Gani , Dadvandipour Samad
Published: July 2022

Identification of online hate is the prime concern for natural language processing researchers; social media has augmented this menace by providing a virtual platform for online harassment. This study identifies online harassment using the trolling aggression and cyber-bullying dataset from shared tasks workshop. This work concentrates on extreme pre-processing and ensemble approach for model building; this study also considers the existing algorithms like the random forest, logistic regression, multinomial Naïve Bayes. Logistic regression proves to be more efficient with the highest accuracy of 57.91%. Ensemble bidirectional encoder representation from transformers showed promising results with 62% precision, which is better than most existing models.
Development and evaluation of the effectiveness of the integration gateway for the interaction of the learning management system with external systems and services of state information systems
Authors: Fedkin Yevgeniy , Kumargazhanova Saule , Denissova Natalya , Smailova Saule , Rakhmetullina Saule , Kakisheva Lazzat , Krak Iurii
Published: July 2022

The paper presents the results of the development of information technology for the interaction of the learning management system with the state information systems of the Republic of Kazakhstan in the field of higher education. Integration with these systems is based on the integration gateway, which is part of the educational portal of the East Kazakhstan Technical University named after D. Serikbayev. Approaches to organizing data exchange with external information systems were analyzed and described, and mechanisms for integrating the national database of the Republic of Kazakhstan with a unified higher education management system were identified. The created integration gateway within the framework of the educational portal interacts with the information systems using the technology of transferring a representative state, data transfer is carried out in text format. The implemented gateway allows you to receive the necessary data from the database of the educational portal, generate data packets for transmission, connect to an external system and transfer data. To evaluate the efficiency of the gateway, computational experiments were carried out in which data of various volumes were transferred through the created gateway to state information systems and the time of their transmission was recorded. Based on the obtained data, the dependences of the transmission time on the amount of transmitted data for each information system with which interaction is carried out were obtained and their graphical display was built. According to the results of the experiments, it was shown that the transmission time has a polynomial dependence on the amount of data, which makes it possible to interact with the indicated information systems in real time
Implementation of the MgO/epoxy nanocomposites as flame retardant
Authors: Hameed Noor Amer , Abbas Sura Jamal , Jammal Murtadah Thamer , Abbas Saad Qasim
Published: July 2022

This work aims to prepare magnesium oxide MgO nanopowder using the coprecipitation method and prepare nanocomposites by mixing MgO prepared nanopowder with epoxy resin by weight percentages (0.5, 1, 1.5, 2, and 2.5) using hand lay up molding. These prepared chemical materials are added to many consumer products to meet fire safety codes and prevent these items from catching fire quickly. If the flame retarded material or an adjacent material has ignited, the flame retardant will slow down combustion and often prevent the fire from spreading to other items. Especially some of these chemicals can accumulate in parts of electrical equipment, cars, airplanes, and building components. Using non toxic nanofillers in polymers to achieve flame retardancy is a viable option. The prepared powder has a cubic structure,  space group, and 4.2165 Å unit cell parameters according to X-ray diffraction XRD data and using Dicvol 91 indexing program. The grain size of the prepared powder was measured using Sherrer's equation to be 12.45 nm. The scanning electron microscope SEM micrograph of MgO nanopowder showed a spherical shape. The effect of MgO on flame retardancy of epoxy resin was investigated using limiting oxygen index LOI, rate of burning RB, and maximum flame height HF tests. According to the results of the three standard tests, the best flame retardancy with a strong and well intumescent char is obtained from the sample with 2 wt. % of MgO nanopowder, which has the highest LOI value of 21.95, RB value of 1.65 cm/min, and HF value of 5.44 cm. This data of using MgO nanopowder as flame retardant was valuable and necessary because it showed MgO nanopowder help prevent and slow fires of epoxy resin, therefore, protecting property and saving lives.
ALGORITHMS AND ARCHITECTURE OF THE SOFTWARE SYSTEM OF AUTOMATED NATURAL AND ANTHROPOGENIC LANDSCAPE GENERATION
Authors: Levus Ye. V. , Morozov M. Yu. , Moravskyi R. О. , Pustelnyk P. Ya.
Published: July 2022

Context. The problem of automation of the generation of natural and anthropogenic landscapes is considered. The subject of the research is methods of procedural generation of landscapes that quickly and realistically visualize natural and anthropogenic objects taking into account different levels of detail.

Objective. The goal of the work is to improve the rendering quality and efficiency of the procedural generation process of landscape surfaces at any level of detail based on the implementation of the developed method.

Method. The proposed method of visualization involves the construction of a natural landscape using Bezier curves and surfaces and manual editing of individual segments; use of software agents that are responsible for individual steps of generating anthropogenic objects; adaptation of anthropogenic objects to the characteristics of natural landscapes; containerization of three-dimensional objects, which is used in various steps to organize the storage and loading of objects efficiently. A generated heightmap based on the Perlin noise algorithm is used to construct surfaces on individual segments of the natural landscape. Landscape processing software agents are used to unify the design of algorithms for creating and processing information about anthropogenic objects. Correct application operation and error resistance is guaranteed due to the inheritance of a specific interface by all implementations of agents. Containerization with two-level caching ensures the efficiency of display detailing.

Results. The developed method is implemented programmatically, and its efficiency is investigated for different variants of input data, which to the greatest extent determine the complexity of visualization objects.

Conclusions. The conducted experiments confirmed the efficiency of the proposed algorithmic software and its viability in practice in solving problems of automated landscape generation. Prospects for further research include improvement and expansion of the algorithms for procedural landscape generation, functionality complication of manual visualized object processing, and division of individual objects into separate hierarchies of containers.
Методы и модели автоматического распознавания речи
Authors: Kipyatkova Irina , Karpov Alexey , Kuleshov Sergey , Zaitseva Alexandra
Published: July 2022

В учебном пособии рассматриваются основные методы моделирования естественной речи, применяемые в системах автоматического анализа и распознавания речи. Описываются методы и алгоритмы цифровой обработки речевых сигналов, построения фонематического словаря системы распознавания речи, акустического и языкового моделирования с использованием вероятностных и нейросетевых подходов. Дается описание интегрального подхода к построению систем автоматического распознавания речи. Учебное пособие предназначено для студентов технических ВУЗов, аспирантов, обучающихся по направлению «09.06.01 Информатика и вычислительная техника», а также для всех читателей, интересующихся современными подходами к разработке систем автоматического распознавания речи.
Scanning accuracy with splinted and unsplinted implant scan bodies for the edentulous arch at implant level: an in vitro study
Authors: GARBACEA ANTOANELA , Alqahtani Ali F , Goodacre Brian , Alhelal Abdulaziz , Lozada Jaime , Kattadiyil Mathew T
Published: July 2022

Accuracy of completely edentulous arch scanning with implant scan bodies has not been completely validated for intraoral scanners. For desktop laboratory scanners validations were found in the literature. The aim of this in vitro study was to compare the dimensional accuracy of scanning with splinted and unsplinted scan bodies on a completely edentulous maxillary arch with 6 implants. A maxillary edentulous master cast with 6 implants was used as control for all implant level impressions. 6 implants were digitally planned and placed at different angulation of 0, 0  17° and 30°. A contact coordinate measuring machine (CMM) was used to generate baseline linear measurements of the master cast. Four test groups included: 2 intraoral scanners Trios (3shape, Copenhagen, Denmark) and True Definition (3M ESPE, St Paul, MN), one industrial scanner Atos (Core optical 3D scanner) and one conventional impression group scanned with laboratory scanner Dental Wings 7 Series. Each scan recording was made with splinted and unsplinted scan bodies. Digital datasets of all measurements were compared with the CMM baseline values using PolyWorks® InnovMetric Software in order to assess the linear and angular deviations and determine the accuracy of complete arch digital impression. Factorial ANOVA showed significant effect with splinting, scanner type, inter-implant distance and implant angulation for linear deviations. Splinted scan bodies revealed elevated linear and angular deviation values for all scanners with significantly highest deviations for True Definition scanner. Significant correlation was found between inter-implant distance and linear deviation (r =0.45, P =<0.001) with increased linear deviations among all scanners, regardless of splinting. ( P <0.05). Significant effect on accuracy was seen for angular deviation with splinting, scanner type and implant angulation; significant difference was found between 0° and 30° implant angulation ( P =0.035) with more deviation with 30° implant angulation. The accuracy of the complete arch implant digital impression using splinted scan bodies was significantly reduced for measurements that crossed the arch midline. The digital impression technique using a broad splint design to connect scan bodies was not found to improve the scan accuracy for intraoral scanners.
Avaliação do processo de privatização da siderurgia brasileira
Authors: PAULA GERMANO MENDES DE
Published: July 2022

RESUMO Este artigo examina o processo de privatização da indústria siderúrgica brasileira, por meio de uma comparação internacional. Discute cinco questões do processo: a) modelos, métodos e transparência; b) duração; e) restrição ao capital estrangeiro; d) venda especial para funcionários; e) avaliação e formas de pagamento aceitas.
Abertura comercial e indústria: o que se pode esperar e o que se vem obtendo
Authors: MOREIRA MAURICIO MESQUITA , CORREA PAULO GUILHERME
Published: July 2022

RESUMO O objetivo deste artigo é avaliar o impacto da liberalização do comércio na indústria de transformação brasileira no período 1989-96. Para tanto, foi construída uma série de indicadores que evidenciam a eficiência técnica e os efeitos alocacionais da liberalização. Os resultados obtidos sugerem que os impactos foram, em geral, positivos e consistentes tanto com as previsões da literatura do comércio internacional quanto com o padrão de industrialização do Brasil. No entanto, também apontam para uma série de desafios a serem enfrentados pelo Estado, em particular, no que diz respeito às imperfeições que afetam o comércio internacional de manufaturas e que ameaçam os ganhos com o comércio.
Avaliação do Processo de Reestruturação Industrial Brasileiro
Authors: BARROS JOSÉ ROBERTO MENDONÇA DE , GOLDENSTEIN LÍDIA
Published: July 2022

RESUMO A interação de quatro tendências (globalização, abertura da economia, estabilização e privatização) vem rompendo a tríade composta por empresas estatais, estrangeiras e privadas familiares, que foi dos anos 50 ao início dos anos 90 o esteio do Brasil. capitalismo da. A economia brasileira está passando por profundas transformações que, apesar das dificuldades, têm possibilitado a solidificação de uma nova dinâmica de investimentos que pode permitir o início de um crescimento sustentado. Este trabalho foi uma primeira tentativa de avaliar esse processo e definir as bases para uma política de competitividade e investimentos que se diversifiquem das antigas políticas industriais praticadas no Brasil ajudariam a minimizar as dores do processo e auxiliar na sua solidificação.
Caracterização mecânica e morfológica de fibras de coco tratadas superficialmente para utilização como reforço em polímeros
Authors: Nunes João Vitor da Silveira , Silva Edson Xavier Batista da , Miranda Matheus Henrique Pires , Rios Alexandre de Souza , Deus Enio Pontes de
Published: July 2022

RESUMO Pela questão ambiental aumentou-se a procura por materiais que utilizem mais recursos naturais e renováveis, como os polímeros reforçados com fibras naturais. São realizados tratamentos superficiais para a melhor adesão da fibra na matriz polimérica, o mais comum é a merceirização através de solução de NaOH. A fibra de coco foi analisada em quatro condições: variando entre tratadas e não tratadas, seca em estufa e seca naturalmente. Em seguida foram analisadas por ensaio de tração, microscopia eletrônica de varredura (MEV) e tomografia de raio x para estudar as características mecânicas, morfológicas e observar a adesão ao polímero. Após o tratamento químico ocorreu a remoção da lignina e hemicelulose da superfície da fibra. Nas fibras tratadas e secas surgiram microfissuras que podem comprometer as propriedades mecânicas. Através do processamento das imagens das secções transversais da fibra foi obtida uma área efetiva entre 39,6% e 43,3%. Para as fibras abaixo de 300 µm a resistência a tração converge para 20 a 60 MPa e o módulo de elasticidade entre 1 e 3 GPa. Os tratamentos aumentaram a resistência a tração e módulo de elasticidade das fibras, contribuindo para a utilização de fibra de coco como reforço em polímeros.