bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contribuições dos indígenas para a construção de um currículo cosmopolita subalterno
Authors: Backes José Licínio , Pavan Ruth 
Published: January 2023

No artigo, analisam-se as contribuições dos indígenas para a construção de um currículo cosmopolita subalterno. A pesquisa de campo envolveu entrevistas semiestruturadas com estudantes indígenas de cursos de licenciaturas de uma universidade brasileira. Pela análise qualitativa efetuada com base nas teorizações curriculares cosmopolitas e no campo da educação indígena, concluiu-se que os indígenas contribuem para a construção de currículos cosmopolitas subalternos de diferentes formas: luta contra os estereótipos; valorização das línguas maternas; reconhecimento de que a subalternização não se rompe com uma educação que subalterniza; necessária articulação entre conhecimento e contexto cultural; construção de laços de solidariedade com outros grupos subalternizados; e insistência em construir pontes e diálogo, mesmo com quem historicamente não o deseja.
PREDICTION OF CHANGES IN THE BALLISTIC CHARACTERISTICS OF SHOTS OF SEPARATE-SLEEVE LOADING WITH LONG-TERM CHARGES
Authors: Anipko O. , Baulin D. , Biryukov I. , Gunko O. 
Published: January 2023

Currently, the problem of many countries of the world, including Ukraine, is the presence in arsenals, bases and warehouses of a large number of various ammunition that are beyond the boundaries of the guaranteed storage periods. The lack of production capacity in Ukraine for the manufacture of ammunition has led to the fact that ammunition is currently in operation, the storage time of which exceeds 30 years.
As the results of studies show, during long-term storage, nitrocellulose-based gunpowders used in ammunition undergo various physical and chemical transformations, which leads to changes in their properties and, in turn, to the negative consequences of the use of such ammunition.
This article analyzes publications devoted to scientific research on the problems of operating long-term ammunition, their impact on the ballistic characteristics of weapons and the feasibility of using such ammunition, both in terms of personnel safety, and the accuracy of performing fire missions and the operation of weapons in general.
The general problem of the operation of ammunition with post-warranty storage periods is presented, as well as one of the tasks associated with the possibility of predicting changes in the properties of powder charges at different storage periods.
The generalizing data of the shooting experiment with the use of the 122-mm D-30 howitzer and shots of various years of manufacture are given. A change in the firing range depending on the life of the ammunition is shown, as well as a change in some ballistic characteristics. On the basis of the experiment, a relation has been obtained that makes it possible to predict changes in the initial velocity of the projectile depending on the mass of the charge.
The possibility of restoring the properties of powder charges by treating them with hydrogen peroxide is shown, as well as a predictive assessment of the appropriate timing for the regeneration of nitrocellulose powder charges for homologation of the ballistic and energy characteristics of ammunition.
DETERMINATION OF THE COEFFICIENT SLIDING FRICTION VALUE IN THE CONTACT THE CUTTING TOOL-COMPOSITE
Authors: Khavin G. , Zhiwen Hou 
Published: January 2023

One of the most important characteristics in calculating the cutting tool wear in contact with the processed composite is the friction coefficient. In most calculations, including the finite element method, the friction coefficient is traditionally set as a constant, the value of which is often taken from experience without any reason. However, when machining reinforced composites, there are too many mechanical and technological factors that have a very strong effect on the friction coefficient value. This influence is associated not only with the initial heterogeneity of the composite, but also with the constant actual change in the contact conditions over time, caused by the wear of the tool cutting part. The friction coefficient value in real conditions of contact interaction has a very complex physical content due to the presence of products of fibers and binder destruction in the contact, partial a binder melting at a temperature in contact, and the unevenness of the cut fibers presence.
This article presents a formulation that allows you to calculate the value of the friction coefficient depending on the volumetric content and the inclination angle of the reinforcing elements. It is proposed to calculate the friction coefficient value as the product of two factors, one of which is responsible for the filler volumetric content, and the other for the reinforcing elements orientation. The calculations use the mixtures theory relations .The presented expressions for calculations are based on the use of limited experimental information presented by various authors. The available data are often contradictory and relate, as a rule, to predicting the processed surface quality of unidirectional glass and carbon fiber reinforced plastics. At the same time, the friction coefficient value in the calculations has a significant impact on the representation of tool wear and life. The model does not take into account the contact pressure effect, mutual sliding velocity and temperature on the friction coefficient value, which will be the subject of further research in this direction.
IMPLEMENTATION OF INNOVATIVE TECHNOLOGICAL SOLUTIONS OF FOOD INDUSTRY FOR FOOD SUPPLY OF SMALL GROUPS IN THE LOCATION CONDITIONS OUTSIDE OF THE DISLOCATIOS
Authors: Savinok O. , Dobrynin Ye. , Sushynskyi D. 
Published: January 2023

The article presents an analysis of general trends in food security for servicemen of the Armed Forces of Ukraine. Currently, the process of implementing NATO standards in the processes and procedures of logistical support of the domestic Armed Forces is underway. This applies to providing servicemen with fresh food, rich in essential substances, their maximum preservation during long-term storage and preparation before consumption.
Innovative proposals of the food industry that can be implemented in the food supply of the Armed Forces of Ukraine are analyzed, recommendations are given. For cooking, it is advisable to use peeled vegetables packed in barrier films in a vacuum or with a modified gaseous environment. It is desirable to supply raw meat to consumers in the form of packaged natural semi-finished products. Peeled vegetables and meat products prepared for heat treatment will reduce the volume of refrigeration chambers for their storage, eliminate the appearance of food waste and dirty water that need to be disposed (cleaned).It is recommended to use fast-cooking cereals and cereals of high nutritional value. Such cereals will reduce the duration of the cooking process from 40–60 minutes. up to 10–15 minutes It is recommended to bake bakery products from frozen semi-finished products of a high degree of readiness. This will ensure the daily need of the staff for fresh bread, eliminate its daily supply, the threat of consumption of mold-infested products and the need for large field bakeries.
It is established that the rational organization of food of small units will be provided by semi-finished products with the maximum degree of preparation for heat treatment. Semi-finished products will reduce: labor costs of the cook; time to prepare full-fledged rations; drinking water volumes; fuels and lubricants; the part of food waste.
Algorithm, implementation, data preparation, calculation of statics and dynamics of beam lattice structures in SSKA KIDYM
Authors: Andrieiev Yuriy , Marusenko Oleksii 
Published: January 2023

The problem of developing a universal analytical description and an algorithm for automatic computer calculations of dynamics, statics and kinetostatics of mechanical models of structures, which include beam lattices, is considered. These can be calculations of transient processes, steady-state free and forced vibrations, determination of equilibrium positions and stress-strain state under static and dynamic loads, etc. The structure itself can be flat or spatial, fixed or movable on a plane or in space. Various equipment can be attached to it. It is shown how it is possible to analytically describe a part of the structure, which is a beam lattice, in a language for preparing computer data of a special computer algebra system KiDyM (SCAS KiDyM). Based on the theory of elasticity of Bernoulli-Euler beams, 2 forms of the canonical representation of the potential energy of an elastic beam are obtained. This allows us to introduce a new element into the accepted language for describing mechanical models - a “Beam”, for which the positions of coordinate systems associated with its extreme sections, its geometric and physical parameters are indicated. The position of these sections is determined by the lattice nodes, as by solid bodies. Thus, the generalized coordinates of the mechanical model are determined. An algorithm for the formation of elements of mechanical models of SCAS KiDyM has been developed. This gives the elastic structure of the mechanical model. The tools available in this program automatically build the equations of dynamics and statics, i.e. form a mathematical model, according to which dynamic and static calculations are carried out. The article demonstrates the proposed method in detail on the example of calculating the deformation of a window frame. A comparison of the results with calculations based on an independent program was made.
Key words: lattice beam structures, Bernoulli-Euler beams, a special system of computer algebra, calculations of the dynamics of spatial mechanical models.
Does the Development of Digital Finance Promote the Haze Governance? ——Empirical evidence from 284 cities in China
Authors: Wang Ruqi 
Published: January 2023

Abstract
Using the panel data of 284 cities from 2011 to 2020 in China, this research statistically tests the direct impact and internal mechanism of digital finance on urban haze governance. The results show that: (1) The development of digital finance can significantly inhibit the concentration of urban haze, and a stronger inhibitory effect in areas where the government pays more emphasis to haze governance and in cities with high level; (2) After mechanism inspection, it is found that digital finance can indirectly promote urban haze governance by influencing green innovation, cooperative innovation, industrial structure upgrading and producer services agglomeration; (3) The results of spatial econometric analysis show that digital finance can suppress the haze concentration in the region, and simultaneously inhibit the neighboring areas through spillover effects; (4) Further inspection shows that the spatial spillover effect of digital finance on haze governance has an obvious spatial attenuation feature, demonstrating that a dense area of spatial spillover is within 310 km. The spillover effect gradually disappears when the threshold is exceeded.
A model for predicting large energy microseismic events in coal mines based on system sample entropy
Authors: Jin Peijian , Lu Xin , Yan Weilong , Ge Suling 
Published: January 2023

AbstractFor the prediction of large energy microseismic events(LEME) in mines, it is often necessary to study its spatial distribution law, precursor information and microseismic activity law, and then establish prediction methods and models by analyzing physical indicators such as microseismic energy and frequency variation characteristics of mine working face. The traditional methods have the characteristics of relying on the physical index of a certain working face, with large limitations and small universality. In this paper, the prediction model of LEME is constructed by combining physical indicators and spatio-temporal data. We introduce system sample entropy to measure the complexity of the whole system. Pearson correlation coefficient shows that the system sample entropy sequence is always positively correlated with the microseismic energy sequence. Therefore, the prediction model based on system sample entropy is feasible. After several optimizations of the model, the LEME with energy greater than 105J in the prediction area can be accurately predicted. Experiments show that our optimization model can predict the LEME in the predicted area well and has high accuracy. At the same time, this model has certain reference value for other similar complex space-time systems.
Energy Efficient Routing and Cluster Head Selection in Wsn Using Different Variant of Differential Evolution
Authors: SHANTHI D L , PRASANNA KESHAVA 
Published: January 2023

Abstract
The primary goal of wireless sensor networks from a design point of view is to enhance the network's lifetime. Among the different options for reducing operational energy consumption, energy invested in routing and cluster head selection is considered to be very effective mechanisms. Both tasks have been considered as very challenging and difficult to obtain the efficient solution. Since it is difficult for traditional approaches to satisfy the requirements and difficulties, a heuristic solution focused on natural computation methods has provided a lot of naivety. The proposed work efforts to address these challenges using computational intelligence especially differential evolution and genetic algorithm. An energy efficient route discovery for dynamic network is designed with variations in DE, quick and adaptable routes were discovered for networks undergoing changes. A knowledge based DE has been designed depending on prior knowldge to redefine new routes for changing network. A hybrid mutation strategy under standard DE is designed for cluster head selection providing faster convergence characteristics. The proposed solutions were implemented under MATlab environment and the results have shown that the proposed solutions are performing better for different network configurations. Dynamic route discovery using KDE has achieved energy saving of 9.83 to 49.2 percentage as compared to RDE and 6.7 to 29.5 percentage as compared to PDE. Also energy saving attained in cluster head selection using proposed HMDE is 10 to 33 percentage better compared to dyPSO and 5 to 10 percentage better compared to SDE.
Triple-band metamaterial perfect absorber for refractive index sensing in THz frequency
Authors: Khodadadi Bahare , Babaeinik Majid , Ghods Vahid , Rezaei Pejman 
Published: January 2023

Abstract
A triple-band metamaterial perfect absorber (MPA) is founded of monolayer graphene in THz region which is adjustable and polarization-independent is presented. The first layer of the structure from top contains of a graphene ring at the center of structure with four graphene wheel-shaped around it and four graphene triangles in the corner. This proposed structure has caused us to achieve 98.64%, 99.97% and 99.98% perfect absorptions peaks at 8.17 THz, 9.74 THz and 11.95 THz, respectively. We can vary the absorption peak frequencies to our desirable frequencies by changing the Fermi level of graphene. By tunining the incident angle waves up to 60 degrees, the frequency peaks and the value of absorption change slightly. Moreover, very significant matter about suggested absorber structure design is that it is polarization independent so by tuning the polarization angle, the frequency peaks and the value of absorption remain unchanged. These aspects make the suggested absorber proper for applications such as imaging, detecting, filtering and sensing. We have investigated the application of the MPA in the sensing of refractive index. The refractive index of the unknown material can be measured through shifts of frequency peaks. Based on the obtained results, it seems that the metamaterial perfect absorber is a good candidate for biosensors application.
Transformer-based dimensionality reduction
Authors: Ran Ruisheng , Gao Tianyu , Zhang Wenfeng , Peng Shunshun , Fang Bin 
Published: January 2023

Abstract
Recently, Transformer is much popular and plays an important role in the fields of Machine Learning (ML), Natural Language Processing (NLP), and Computer Vision (CV), etc. In this paper, based on the Vision Transformer (ViT) model, a new dimensionality reduction (DR) model is proposed, named Transformer-DR. From data visualization, image reconstruction and face recognition, the representation ability of Transformer-DR after dimensionality reduction is studied, and it is compared with some representative DR methods to understand the difference between Transformer-DR and existing DR methods. The experimental results show that Transformer-DR is an effective dimensionality reduction method.
Assessment of suitable minimum ecological flow downstream of a dam in the Upper Yellow River based on native fish conservation
Authors: Yang Lu , Hou Jingming , Tong Yu , Wang Pan , Cheng Long , Song Ce , Yuan Liu , Lv Jiaojiao , Xue Shuhong 
Published: January 2023

Abstract
To ensure the ecological operation of the proposed C hydropower stations of the Upper Yellow River, the suitable minimum ecological flow of the study reach after the completion of hydropower station is studied. The native plateau fish was considered as an indicator species of the reach downstream of the dam for ecological conservation. The study is based on a 2D shallow water model with high-precision solution methods and GPU-accelerated performance, combined with Tennant, hydraulics method and habitat suitability models to obtain habitat conditions of river for fish survival during non-spawning periods and effective habitat areas during spawning period under different discharges. The results indicated that the suitable minimum ecological flow downstream of the C hydropower station was 87.5 m³/s to protect fish downstream. This achievement not only provides basic data for the optimal operation of C hydropower station based on the ecological response, but also some reference value for the actual operation management of water conservancy projects. Besides, it is of great ecological significance for the protection of native fish habitat in the Yellow River Basin.
Access to basic water, sanitation, and hygiene (WASH) facilities and associated factors in Ethiopia: evidence from demographics and health surveys
Authors: Desye Belay , Keleb Awoke , Berhanu Leykun , Ebrahim Ahemed Mohammed , Natnael Tarikuwa , Wagaye Birhanu , Gufue Zenawi Hagos , Adane Metadel 
Published: January 2023

Abstract
In low- and middle-income countries, ensuring water, sanitation, and hygiene (WASH) facilities for households remains a major public health concern. Therefore, this study aimed to assess households’ access to WASH services and associated factors in Ethiopia. A cross-sectional study was conducted among 16,650 and 8,663 households in the 2016 Ethiopian Demographic Health Survey (EDHS) and 2019 Mini-EDHS, respectively. The households were selected using a stratified two-stage cluster sampling technique. Multivariable logistic regression analysis was performed to identify factors associated with basic WASH services. Households’ access to basic water services was 65.2% (95% CI: 64.5–65.9%) and 68.7% (95% CI: 68.01–69.4%) in the 2016 EDHS and 2019 Mini-EDHS, respectively. Only 25.9% (95% CI: 25.2–26.62%) in the 2016 EDHS and 27.5% (95% CI: 26.34–28.3%) in the 2019 Mini-EDHS households had access to basic sanitation services. Moreover, only 38% (95% CI: 37.25–38.8%) of households had access to basic hygiene services in the 2016 EDHS. Female-headed households, urban residents, having education, family members ≥7, presence of soaps or detergents, and having a better wealth index were the most likely to have access to basic WASH services. The findings in general suggest the need for effective WASH interventions.
Water as Green Solvent for the Carbon-Nitrogen Bond Formation
Authors: Saima  , Lavekar Aditya G. , Mishra Tripti , Banik Bimal Krishna 
Published: January 2023

Background:
Edifice of C–N bond attained a very impressive position in organic synthesis as it unlocks avenues for offering nitrogen in organic molecules. As we know that water has emerged as a versatile solvent for the synthesis of a variety of organic compounds. Moreover, in accordance to green chemistry, using a very optimistic environment friendly solvent is the main concern for synthetic chemists. Thus, water always comes first in mind as a solvent of choice in appeal to environmentally benign solvents. The inertness of water and its property to dissolve maximum number of compounds, its abundant sources in nature, further embrace it as a crown. Recent years witnessed advancement in green chemistry, further forcing the organic chemists for selecting the solvent for the reaction, which will be less perilous for the mother nature.

Material and methods:
Thus, in present time, many reports have been available in literature, wherein water is embellished for performing organic reactions and synthesis of an ample amount of heterocyclic compounds. Therefore, there is a need of time to compile the latest research articles wherein water has been working as solvent to focus on C-N bond forming reactions. As among the heterocyclics, the compounds with carbon nitrogen bonds also possess a significant place due to their importance in medicinal and material science.

Results:
Thus, the present draft perceived some current and most impressive carbon-nitrogen bond forming reactions exploring water as a reaction media. Moreover, we have made efforts to include more application parts and synthesis of important biological nitrogen containing heterocyclic to be included in the present study.

Conclusion:
Thus, we have tried here to compile all the recent reports of C-N bond foration in water, which help the reviewers to have insight in to C-N bond forming reactions employing water as reaction media.
Total Syntheses and Anti-inflammatory Evaluations of Karanjin and its
Natural Analogues
Authors: Li Ying , Yu Pei , Shi Hefei , Yang Tingting , Feng Chuanling , He Yujiao , Dong Hongbo 
Published: January 2023

Abstract:
Karanjin (1) is a natural furanoflavonol derivative isolated from seeds of Pongamia pinnata
(L.) Pierre. In this paper, we have accomplished a concise total synthesis of karanjin (1) as well as its
natural analogues pongapinnol D (2), 3-hydroxy-6-methoxy-2-phenyl-4H-furo[2,3-h]-1-benzopyran-
4-one (3) and 3,6-dimethoxy-2-phenyl-4H-furo[2,3-h]chromen-4-one (4). One-pot aerobic oxidation
was the key step to afford the flavonol framework under mild conditions. The anti-inflammatory
properties of synthesized 1–4 were determined against NO production in the LPS-stimulated
RAW264.7 cells.