bluuebunny/crossref_metadata_2025 huggingface dataset:
A Novel Coil Array Compensation Structure Design with High-Misalignment Tolerance for UAV-Enable WPT system
Authors: Rong Cancan , Chang Jin , Liu Yachao , Ling Zhi , Xu Yunpeng , Lu Qibiao , Liu Yujie , Zhao Hailin , Wang Haoyang , Xia Chenyang
Published: January 2024

The problem of charging unmanned aerial vehicles (UAVs) is an important application area for wireless power transmission (WPT). However, the flight characteristics of UAVs make it difficult for the traditional single-coil coupling mechanism to ensure alignment between the transmitting and receiving ends. It also has poor anti-skewing performance and a cumbersome optimization process, which ultimately decreases the efficiency of charging UAVs. To address this problem, this paper takes the 2×2 square coil array as research object, analyzes the distribution characteristics of the axial magnetic field at a specific height, proposes a "cross" compensation structure, and adopts genetic algorithm to optimize the side length and turns of the compensation coil. The goal is to significantly improve the axial magnetic field uniformity in the charging area and reduce the degree of magnetic field leakage. Finally, the effectiveness and superiority of the proposed "crossover" compensation structure and its optimization method are demonstrated through the construction and testing of the system experimental platform, which significantly improves the anti-offset performance and transmission efficiency of the WPT system.
Application of IoT devices based on optical topology sensors in simulation of shooting speed for football players
Authors: Bao Juan , Zhou Shengwang , Li Simin
Published: January 2024

Football has always been loved by people, and in recent years, the country has gradually carried out publicity about football, which has gradually made football popular and people's attention to football is also increasing. Football shooting techniques play a very important role in achieving good results. In order to achieve simulation experiments on the shooting speed of football players, this article will conduct simulation experiments on the shooting speed of football players using optical sensor measurement principles combined with topology based IoT devices, and deeply analyze the collected simulation data. Firstly, in order to improve the stability of the system in detection, this article also proposes a sensor based on an array waveguide grating structure that is not affected by factors such as wavelength drift; Secondly, in order to better analyze the advantages and disadvantages of sensors, this article conducts analysis and research on multiple aspects of sensors, and improves the structure and parameters of sensors. The final experimental results indicate that the system designed in this article has the best simulation performance, with good performance in data protection and storage. Therefore, the IoT device based on optical topology sensors proposed in this article is feasible in collecting simulation data on the shooting speed of football players.
Infrared image compensation filtering algorithm based on wearable sensors in sports training simulation
Authors: Jing Xu
Published: January 2024

With the development of sports training simulation technology, wearable sensors have been widely used to monitor the physiological signals of athletes. However, in indoor sports training, sensors are affected by infrared light interference, leading to a decrease in sensor signal quality and thus affecting training effectiveness. A research has proposed an infrared image compensation filtering algorithm based on wearable sensors, which performs a series of preprocessing steps on infrared images to improve image quality. Signal contrast enhancement technology is used to enhance the visual effect of the images. In order to solve the problem of infrared interference, an infrared image compensation model was established, and filtering algorithms were applied to process the compensated images to extract features related to motion posture. Filtering algorithms can improve image noise suppression and contour feature extraction by performing spatial or frequency domain filtering operations on the image. Through experimental verification, this algorithm effectively improves the accuracy and stability of sensor signals while reducing infrared light interference, and can more accurately capture the physiological changes of athletes.
Peer Threat Evaluations Shape One’s Own Threat Perceptions and Feelings of Distress
Authors: Espinosa Lisa , Nook Erik C. , Asperholm Martin , Collins Therese , Davidow Juliet Y. , Olsson Andreas
Published: January 2024

We are continuously exposed to what others think and feel about content online. How do others’ evaluations shared in this medium influence our own beliefs and emotional responses? In two pre-registered studies, we investigated the social transmission of threat and safety evaluations in a paradigm that mimicked online social media platforms. In Study 1 (N=103), participants viewed images and indicated how distressed they made them feel. Participants then categorized these images as threatening or safe for others to see, while seeing how “previous participants” ostensibly categorized these images (these values were actually manipulated across images). We found that participants incorporated both peers’ categorizations of the images and their own distress ratings when categorizing images as threatening or safe. Study 2 (N=115) replicated these findings and further demonstrated that peers’ categorizations shifted how distressed these images made them feel. Taken together, our results indicate that people integrate their own and others’ experiences when exposed to emotional content and that social information can influence both our perceptions of things as threatening or safe, as well as our own emotional responses to them. Our findings provide replicable experimental evidence that social information is a powerful conduit for the transmission of affective evaluations and experiences.
Control System Design for Azimuth Position of Earth Station Antennas
Authors: Al-Mayyahi Auday , Aldair Ammar , Khalaf Zainab A.
Published: January 2024

Smart earth station antennas have been used for several decades in many applications, from satellite communications to space object detection and tracking. The accuracy of the azimuth position for such antennas plays a crucial role in most steerable ground station antennas. Satellite tracking and space object detection demand precise tracking capabilities from the Earth. Several methods and techniques have been developed and used in industry to control the directions of ground station antennas, including the azimuth position. The challenge of azimuth tracking is increasing with the demand for full-sky coverage and with the exponential increase in space objects, including man-made satellites and operational and nonoperational objects; thus, providing accurate tracking is a key technology that demands continuous enhancement and development. This article presents the use of a PID-proportional-integral-derivative controller, a slide mode controller and a fractional order PID controller. It also introduces a new methodology based on model predictive control (MPC). The manuscript provides the core design for each of these controllers and provides insight into the performance of each controller even in the presence of disturbance. The camel optimization algorithm (COA) was used to obtain the optimal design parameters of each controller in the considered scenarios.
Comprehensive Analysis of Ordering in CoCrNi and CrNi2 Alloys
Authors: Coury Francisco , Bacurau Vinícius , Moreira Pedro , Bertoli Gustavo , Andreolli Angelo , Mazzer Eric , Assis Flavio , Gargarella Piter , Figueroa Santiago , Widom Michael , Kaufman Michael , Fantin Andrea , Cao Yifan , Freitas Rodrigo , Miracle Daniel
Published: January 2024

In the intricate realm of high and medium entropy alloys (HEAs/MEAs), the elusive nature of Chemical Short-Range Order (CSRO) has captivated researchers, creating intense debates on its impact on material properties. Rooted in the local arrangement of atoms, CSRO's pivotal role in shaping the structural and mechanical characteristics of HEAs remains a subject of fervent exploration. The challenges lie in confirming and quantifying CSRO, as its detection proves exceptionally demanding, contributing to conflicting data in the literature regarding its true effects on mechanical properties. Our work uses high-precision calorimetric data to unambiguously prove the existence and, coupled with atomistic simulations, quantify the type of CSRO. This methodology allows us to propose a mechanism for its formation and destruction based on the heat evolution during thermal analysis and facilitates a precise identification of local ordering in CoCrNi alloys. Samples of CoCrNi (Co33Cr33Ni33) and CrNi2 (Cr33Ni66) alloys are fabricated in varying ordered states, extensively characterized via synchrotron X-Ray diffraction, X-Ray absorption spectroscopy, and transmission electron microscopy. Samples with considerably different ordered states are submitted to tensile tests with in-situ synchrotron X-Ray diffraction. Despite inducing varied CSRO levels in CoCrNi, no significant alterations in overall mechanical behavior emerge. However, the CrNi2 alloy, which undergoes long-range ordering, experiences profound shifts in yield strength, ultimate tensile stress, dislocation density, and ductility. The novel methodology proposed in this work charts a course toward harnessing the nuanced effects of CSRO on material properties in complex alloys.
Examining the adoption of Apple Pay among generation Z in Vietnam
Authors: Minh Sang Nguyen
Published: January 2024

This study examines the level of knowledge, use, and determinants determining the adoption of Apple Pay among Generation Z customers in Vietnam. An online survey with 339 participants aged 18-26 was done using quantitative methods. The participants were recruited using social media platforms. The study model included elements from technological acceptance theories, such as effort expectation, perceived risk, perceived value, and convenience. The measurements were ensured to be reliable and genuine. The hypotheses were tested by analyzing the data using partial least squares structural equation modeling. The study’s results suggest that the data collected through PLS-SEM analysis provide evidence in support of the hypotheses proposing that factors such as Mobile User Skillfulness, Personal Innovation, Perceived Usefulness, Effort Expectation, Convenience, and Perceived Value have a positive influence on individuals’ Intentions to Use Apple Pay in Vietnam. Furthermore, the study revealed that the variables of Perceived Risk and Social Image did not have a statistically significant influence. The findings suggest that the pragmatic orientation of Generation Z towards the functionality and ease of use of Apple Pay has a significant impact on their adoption of this payment system in Vietnam. The study offers banks in Vietnam significant insights regarding the promotion of mobile wallet adoption among the younger demographic. Adoption may be increased by presenting Apple Pay as a practical and convenient application. AcknowledgmentThe author would like to thank everyone who filled out the survey. Without the help of everyone involved and the Ho Chi Minh University of Banking (Vietnam), this study would not have been possible. 
The role of supply chain management in improving performance of Jordanian small and medium enterprises
Authors: Almohtaseb Ahmad , Aldehayyat Jehad , Al Khattab Adel , Alabaddi Zaid
Published: January 2024

Supply chain management practices are always helpful for multinational enterprises in increasing their growth. However, there has always remained an open debate about which practices are helpful for small and medium enterprises (SMEs). Therefore, this study has examined the influence of supply chain management practices on the performance of SMEs. Moreover, it has examined how the moderation of supply chain ecocentricity and innovation capabilities strengthens or weakens the relationship between supply chain management practices and SMEs’ performance. The quantitative study involved 352 SME managers as they can provide the relevant information and possess complete knowledge of management practices. The data were gathered via a questionnaire, and the responses were analyzed using IBM SPSS 28 and IBM AMOS. The results show that SMEs’ performance is linked to supply chain management practices (β = 0.544; P < .001), and this linkage is further strengthened by supply chain ecocentricity (R2 change = 0. 082***, F-Statistics = 47.18) and innovation capabilities (R2 change = 0.061***, F-Statistics = 39.74). SMEs can enhance their performance by efficiently incorporating supply chain management practices and developing innovation capabilities and supply chain ecocentricity.
AcknowledgmentsThis study is funded by Al Hussein Bin Talal University, Ma’an, Jordan, No. 125/2023.
Clinical impact of molecular genetic testing in pediatric oncology
Authors: Dinikina Yu. V. , Imyanitov E. N. , Suspitsin E. N. , Zheludkova O. G. , Nikitina I. L. , Belogurova M. B.
Published: January 2024

Despite remarkable progress in the management of pediatric oncological diseases they remain one of the leading causes of mortality. The disease progression due to tumor resistance, treatment-induced toxic effects and infections complications may contribute to the lethality. New diagnostic technologies facilitate the identification of clinically significant genetic alterations for individualization of therapy approach in order to increase its effectiveness, reduce associated toxicity and improve quality of life of patients and their families. The most promising diagnostic approach is based on next-generation sequencing and includes targeted-, whole exome- and genome sequencing of patients’ blood DNA and tumor tissue. Despite the low rate of detected pathogenic alterations, some of them have prognostic significance, determine sensitivity to anticancer agents and targeted therapy. Moreover, targeted therapy in some cancer types shows benefit over standard therapeutic options. The application of targeted therapy in pediatric patients poses more challenges than in adults. This is due to the absence of established doses, regimens and indications for targeted agents in pediatric clinical trials, risks of associated toxicity and its high cost. This paper summarizes the data on molecular genetic markers, which are potentially helpful in guiding therapy for cancer in children.
The use of ribociclib in real clinical practice: results of a single-center observational retrospective study
Authors: Sultanbaev A. V. , Kolyadina I. V. , Musin Sh. I. , Nasretdinov A. F. , Sultanbaeva N. I. , Menshikov K. V. , Menshikova I. A. , Askarov V. E. , Rakhimov R. R. , Lipatov D. O. , Lipatov O. N. , Sultanbaev M. V. , Zabelin V. M. , Izmailov A. A. , Ayupov R. T. , Izmailov A. A.
Published: January 2024

Introduction. The standard initial treatment for patients with hormone receptor positive, HER2 negative, metastatic breast cancer (HR+/HER2– mBC) involves the use of CDK4/6 inhibitors (CDK4/6i) in combination with endocrine therapy. The combination therapy has proven effectiveness in numerous Phase II and III randomized controlled trials (RCTs). Nonetheless, RCTs may not fully represent real-world clinical situations due to their stringent inclusion criteria, resulting in a specific patient population.

Aim. Analyze of ribociclib using for treating patients with HR+/HER2– advanced breast cancer (mBC) at the Republican Clinical Oncology Dispensary.

Materials and methods. Patients diagnosed with HR+/HER2– mBC who were treated in clinical routine with ribociclib in combination with different endocrine agents between 2016 and 2020 were identified and enrolled in this retrospective study. Clinicopathological characteristics and clinical outcomes were recorded with particular emphasis on ribociclib therapy course (progression-free survival (PFS), toxicity, dose reduction).

Results. Data from n = 101 patients were evaluated. The mean patient age was 61 years. The study included 67 (66.3%) patients with progression after radical treatment and 34 (33.7%) patients with primary disseminated breast cancer. Dose reduction due to adverse events was performed in n = 14 cases (13.9%). Presence of prior therapy lines and lower ECOG status were associated with shorter PFS, whereas estrogen positivity and the choice of fulvestrant over aromatase inhibitor were positively associated with PFS. Metastatic pattern, progesterone positivity and dose reduction due to toxicity did not significantly impact on PFS.

Conclusion. Our real-world data analysis on ribociclib treatment in Russian regional hospital supports data from RCTs regarding both treatment efficacy and safety of CDK4/6i for treatment of patients with HR+/HER2– mBC. Currently, by expanding our experience with CDK4/6 inhibitors in different groups of patients with mBC, we will be able to provide patients with optimal treatment options.
Strategies for the development of the Russian energy industry in the conditions of climate challenges and geopolitical instability
Authors:   St. Petersburg State University, Vetrova Maria , Pakhomova Nadezda ,   St. Petersburg State University, Richter Kurt Knut ,   St. Petersburg State University
Published: January 2024

The complication of the geopolitical situation, the growth of crisis processes, including in the energy and food sectors, the return of a number of “old” problems as significant, including increased inflation, rising cost of living, trade wars, large-scale social protests, etc., to a certain extent distracted the attention of states from solving the problems of the climate agenda. Against this background, it was not possible to overcome the trend towards an increase in greenhouse gas (GHG) emissions, with a special role in this energy. As a result, the achievement of the milestones agreed in Paris in 2015 to keep the temperature of the atmospheric air on the planet within the limits of an increase of 2 °C, with the most preferable option of 1.5 °C, was jeopardized. The complexity of the current climate situation and doubts about its easing in the application of traditional approaches stimulate a rethinking of the landmarks and instruments of climate policy and the energy transition associated with it at the global, subregional and national levels, as well as in strategic business decisions. Of particular interest in this context as a kind of benchmarking are the efforts of countries and regions that seek to take a leading position in these processes. As for Russia, the current situation, including uncertainty in the energy markets and price volatility, jeopardizes the export revenues of the budget and Russian companies, and the continued relevance of the climate agenda to reduce GHG emissions in the face of sanctions pressure and lack of access to the best available decarbonization technologies complicate green energy transition. In this context, the article examines the new accents of climate policy, reveals the leading priorities of the measures being implemented in Russia to adapt to the challenges of the green energy transition, and analyzes ways to update the Russian energy development strategy. Particular attention is paid to the substantiation and presentation of the author’s concept of alternative macro-scenarios for the development of the Russian energy sector and the development of the highest priority strategies for Russian fuel and energy enterprises to maintain their competitive positions in the face of structural shifts and the implementation of a moderate energy transition option.
The main aspects of the experience economy in tourism industry
Authors:   Financial University under the Government of the Russian Federation, Fedorova Elena , Nevredinov Alexander ,   Bauman Moscow State Technical University
Published: January 2024

The purpose of the study is to identify the influence of experience economy factors (entertainment, education, aesthetics, escapism) and the economic component on preferences in choosing hotels in the domestic tourism industry. The empirical base of the study includes 30,926 reviews from the tripadvisor.ru website for 1,243 hotels in Russia for 2021–2022, divided by consumer ratings. The research methodology includes textual analysis of tourist reviews: counting particular words and phrases in reviews, calculating the correlation of words, finding word relationships using the word2vec embedding matrix, highlighting the most popular topics of discussion based on the Latent Dirichlet allocation (LDA) method and assessing sentiment using a BERT transformer network. The results of this study assess aspects of the basic model of the experience economy (aesthetics, escapism, entertainment and education) and adapt the model for the domestic tourism and hospitality industry, adding relevant aspects (recommendations and economics). Based on the results of a quantitative assessment of aspects of the extended model of the experience economy, it was revealed that the aesthetic aspect is decisive for people when evaluating hotels, and the aspects of entertainment and education, expressed indirectly, although they are of high importance, but not as much as aesthetic parameters. The economic component, primarily the price-quality ratio and the overall assessment of the cost, also stands out in the main topics, however, hotel reviews focus on it to a lesser extent. This is the first time in Russia that such a study is evaluating aspects of the experience economy model for the tourism industry and will allow developing the travel market in Russia.
Towards a New Typology of Korean Lexical Blends
Authors:   Moscow State Linguistic University, Mozol Tatiana S.
Published: January 2024

The present research is devoted to neological trends in Korean and focuses especially on the new lexical blends. Languages are constantly creating new words; this is an inevitable process caused by the changes in the world we live. Blending has been considered as a minor word formation process in Korean, but nowadays blending in Korean can be viewed as a separate word formation process due to its increasing productivity and semantic change in resulting blends. This paper first discusses the status of blends in the word formation system, then the theoretical framework and the results of the analysis of Korean blends are presented. The paper analyzes from the quantitative and qualitative perspective 301 blends collected from the National Institute of the Korean Language Dictionaries of Neologisms. Our analysis of the dictionaries showed that blending has become a highly productive and common way of word formation for various lexical layers in Korean. An increasing speed of foreign borrowing, high productivity of clipping and compounding in Korean can be viewed as the factors related to this process to a certain extent. This paper proposes a classification of blends from a semantic and cognitive viewpoint (coordinative, determinative, and derived blends are based on the mirror, single-scope, double-scope, and double blending models).
Real estate registers in Germany and Russia: Public credibility of data vs. bona fide acquisition of property
Authors:   Immanuel Kant Baltic Federal University, Lorents Dmitry
Published: January 2024

The article analyzes dogma, scientific concepts and judicial practice on the acquisition of immovable property in case of its unauthorized alienation in Germany and Russia. The author proposes to improve the Russian model of real estate ownership protection, which is based on German legal constructions. Reasonable the acquirer should check the powers of the counterparty (the title) and doubt them, for example, when the price of the contract is non-market. However, such logic is nonsense in the sphere of civil turnover of real estate, because the legislator establishes the presumption of registered rights and guarantees the credibility of the registry data. Registrars carry out a legal expertise of title documents, therefore, purchasers should not take the risk if the records in the registry are erroneous. There is no need to investigate the gross negligence of the purchasers, and this changes the approach to understanding their bona fide. The essence of public credibility of the real estate register should be reflected in Articles 8.1, 223, 302 of the Civil Code of the Russian Federation: the acquirer does not become the owner if he knows about the uncertainty of the register, or there are marks about an objection or a court dispute regarding the registered right of the alienator. Such public credibility is not conditioned by the will of the previous owner or the payments of the acquirer. The rules of unjustified enrichment (Chapter 60 instead of prescription possession under Article 234, paragraph 4 of Article 302 of the Civil Code of the Russian Federation) can be applied to balance interests, if the victim has economic losses, and the acquirer has not incurred costs. A transaction between a trusting acquirer and an unauthorized alienator means that there is no personal and economic identity between them (family ties, relations of a corporation with its sole participant, transformation of joint ownership into shared ownership between the same persons, etc.). Despite the absence in Russia of a mandatory notarial form of alienation of real estate and an abstract real contract, the legislator can transform the negative system of registration of rights and establish a fiction (the acquisition on the basis of public credibility of register, i.e. a partially positive or fiduciary registration system).
Liability for harm caused by minors: A comparative legal study
Authors:   Chelyabinsk State University, Ostanina Elena
Published: January 2024

The article examines the tort obligations arising in the case of harm to minors under the age of 14. The experience of countries whose legislation does not provide for a general rule on the indelicitability of a minor is studied; it is concluded that in these countries, judicial practice also takes into account the ability or inability of a minor to understand the illegality of his actions or the likelihood of harm. When determining the persons responsible for the harm caused to minors, it was suggested that persons exercising supervision on the basis of a contract should not be understood as relatives or family friends looking after a child as a gratuitous service. On the contrary, commercial organizations that equip a place for children to play automatically become obliged to exercise supervision; as well as persons who, on the basis of a paid contract, provide educational, entertainment, medical, and other similar services to a child. By contracts, by virtue of which a person is obliged to exercise supervision, it is proposed to understand either paid contracts or gratuitous contracts accompanying the process of concluding a paid contract with a consumer (children’s rooms in department stores, restaurants, and so on). The necessity of bringing to responsibility for the harm caused to minors, not only parents, but also persons actually engaged in education (which include, for example, the stepfather or stepmother of the child) is discussed.
The Association of Renal Cortical Echogenicity and Length with Serum Creatinine in Patients with Chronic Kidney Disease
Authors: Kausar Samia , Fareed Fazila , Fatima Kiran , Jahanzeb Zunera , Rehman Habib ur
Published: January 2024

Background: The prevalence of chronic kidney disease is 21.2% in Pakistan and rising due to increasing prevalence of diabetes. Ultrasonography is effective tool in early detection and diagnosis of impaired renal function along with renal function tests.
Objective: To study the correlation of serum creatinine with renal echogenicity grading and renal length in patients with chronic kidney disease.
Methods: This prospective cross sectional study was conducted at Medicine, Nephrology and Radiology departments of Pakistan Railway General Hospital, Rawalpindi from 30th September 2021 to 15th July 2022. A total of 200 patients with chronic kidney disease were enrolled randomly by consecutive non probability sampling from medical and nephrology in and out patients after fulfilling inclusion and exclusion criteria per study design. After history, physical examination of serum creatinine was done and the patient was sent for ultrasound in the radiology department. Demographic data and study data was entered on pre designed proforma and analyzed using SPSS21.
Results: Mean age of the patients was 53.45±8.93 years. There were 110 male and 90 female patients in our study. Mean renal length was 9.55 cm. Mean serum creatinine was 1.921 mg/dl with grade 1 cortical echogenicity, 3.561 with grade 2, 4.267 with grade 3 and 6.001 with grade 4 echogenicity respectively on ultrasound. A negative correlation (r= -0.144) was present between renal length and serum creatinine.
Conclusion: Renal cortical echogenicity is a valuable sonographic parameter and is found to be significantly related to serum creatinine level in chronic kidney disease. While renal length showed weaker association with serum creatinine levels.
Effects of land use/land cover change on hydrological responses of a watershed in the Central Rift Valley of Ethiopia
Authors: Besha Kokeb Zena , Demissie Tamene Adugna , Feyessa Fekadu Fufa
Published: January 2024

The purpose of this study is to evaluate the impacts of LULC changes on the hydrological components of a watershed using multivariate statistics, and hydrological modeling approaches. The study analyzed the LULC distributions, and changes corresponding to the years 2000, 2010, and 2020. The SWAT model was then applied to assess the hydrological impacts of these changes in the studied watershed. Finally, changes in LULC types were correlated with the water balance components using a Partial Least Squares Regression (PLSR) method. The result showed a continuous expansion of barren, built-up, and cropland areas, while forests, shrubs, and grassland decreased by about 67.12, 41, and 36.88%, respectively. The modeling result showed that surface runoff, water yield, and evapotranspiration decreased by 16.1, 2.9, and 9.3%, respectively. In contrast, base flow, soil water storage, and lateral flow of the watershed increased by up to 19.1%, 55.9%, and 150.4%, respectively, due to LULC changes. The PLSR model identified the cropland, forest, and shrub LULC types as the major factors affecting the water resource components. The study results provide useful information for policymakers and planners in the implementation of sustainable water resource planning and management in the context of environmental change.
The effect of arbuscular mycorrhizal fungi on carbon dioxide (CO2) emission from turfgrass soil under different irrigation intervals
Authors: Boyno Gökhan , Yerli Caner , Çakmakci Talip , Sahin Ustun , Demir Semra
Published: January 2024

Increased nutrient and/or water uptake by arbuscular mycorrhizal (AM) symbiosis can affect soil biochemical properties and emission of the greenhouse gas carbon dioxide (CO2). Therefore, an experiment was designed to investigate the effect of AM fungi (AMF) on CO2 emissions from turfgrass. Three different AMF species (Funneliformis mosseae, Claroideoglomus etunicatum, and Rhizophagus irregularis) were used in this experiment. Turfgrass plants were cultivated in pots containing both mycorrhizal and non-mycorrhizal soils over a 10-week period. To mimic real-world conditions, the plants underwent irrigation cycles at intervals of 1, 2, and 3 days, replicating common irrigation practices in turfgrass fields. The research aimed to comprehensively understand the effects of AMF and varying irrigation intervals on CO2 emissions, soil characteristics, plant growth, and AMF parameters. It was observed that the changing irrigation intervals affected the AM symbiosis and this effect increased as the irrigation interval increased. It was determined that this AM symbiosis created with the plant significantly reduced CO2 emissions. In addition, it was determined that it regulates the soil structure and increases plant growth. In conclusion, it can be said that AMF species reduce CO2 emissions by reducing the need for water in the turfgrass.
Deep learning models for groundwater level prediction based on delay penalty
Authors: Chenjia Zhang , Xu Tianxin , Zhang Yan , Ma Daokun
Published: January 2024

In irrigation agriculture, predicting groundwater level (GWL) using deep learning models can help decision-makers coordinate surface water and groundwater usage, thus aiding in the sustainable development and utilization of groundwater. However, when making a long sequence prediction, prediction sequences often have severe delays affecting the availability of prediction results. In this paper, a new loss function is proposed to minimize the lag and oversmoothing on the prediction of GWLs. GWL, meteorology, and pumping data are collected via an irrigation Internet of Things system in Hutubi County, Xinjiang. Through Pearson's correlation analysis, historical potential evapotranspiration (ET0), groundwater extraction, and GWL were chosen to predict GWLs. Datasets were constructed through the proposed spatiotemporal data fusion method; then, the best model from the six deep learning models was selected by comparing the prediction capability of the datasets. Finally, the mean-squared error (MSE) loss function is replaced by the proposed loss function. Compared to the mean absolute error, MSE, and predicted sequence graphs, the new loss function significantly depresses the time delay with similar prediction accuracy.
IoT-based data and analytic hierarchy process to map groundwater recharge with stormwater
Authors: Arinaitwe Miriam , Okedi John
Published: January 2024

The sustainable management of groundwater resources in developing countries is often challenging due to limited measurement and monitoring infrastructure to collect data necessary for decision support. To make a contribution towards addressing these challenges, this study investigated the use of Internet of Things (IoT) technology and low-cost sensors to collect the required groundwater-level data and develop a model to map the recharge potential with stormwater. The study focused on two stormwater ponds located in a highly urbanised area in Cape Town, South Africa. A combination of Geographic Information System and analytic hierarchy process was integrated to generate a groundwater recharge potential zone map of the study area. The IoT-based data were used to develop and calibrate a numerical groundwater model in MODFLOW. The study determined that retrofitted stormwater ponds are potential groundwater augmentation zones and can provide opportunity for stormwater recharge in urban areas. Overall, this study highlights the potential of IoT to collect hydrogeological data with low-cost sensors. Data can be collected at high temporal resolution, and the spatial scale can be increased due to availability of low-cost sensors.
Phenomenological aspect of the title of B. Pasternak’s book of poems The Twin in the Clouds
Authors: Barykin Alexey V.
Published: January 2024

This article focuses on the phenomenological interpretation of Boris Pasternak’s first book of poems, The Twin in the Clouds, examining the artistic intentions that shape the work’s subjective structure. The study delves into the creative conflict involved in defining the lyrical subject, seeking self-identity and engaging in a dialogue with their “double”. The analysis incorporates mythopoetic, hermeneutic and psychoanalytic perspectives to explore the work’s imagery. The author investigates the unique intentional experiences of the lyrical subject within the artistic text’s syntagmatic-paradigmatic connections, transcending conventional sign-defined certainty. This aspect models the existential-ontological realization of the lyrical hero and the author’s self-awareness in phenomenological reflection. The article also examines the linguistic structure of the poetic texts, exploring various interpretations of metaphors that trace back to the sacred tradition of naming. The analytical portion of the article focuses on texts that best demonstrate the ideologically significant aspects of Pasternak’s book. These texts primarily reveal the intentional specificity of resolving the existential conflict of the lyrical subject in their quest for cosmogonic unity with their divine counterpart. The study’s conclusions present findings from an analysis of all poems in the book, considering the actualization of artistic intentions in three main aspects: ontological, gnoseological, and metaphysical. This comprehensive approach uncovers the full range of the hero–subject’s existential experiences.
The image of Moscow in Narine Abgaryan’s The Newcomer
Authors: Gridneva Natalia A.
Published: January 2024

This article examines the portrayal of Moscow in the book The Newcomer (2011) by Narine Abgaryan. This study aims to identify the distinctive features of Moscow’s image during the 1990s, when the story takes place. The study of the poetics of space in Narine Abgaryan’s works is an important aspect of understanding her creativity. However, The Newcomer has not yet been analyzed from this perspective. This article explores the specific image of Moscow by examining key locations, such as Petrovka and the “Intourist” hotel, as well as the characters of O. F. and Aunt Polly, who play crucial roles in the protagonist’s exploration of the city. Petrovka, described at the beginning of the book, portrays Moscow in crisis, reflecting the socio-cultural realities of the time, including street trading, neglected urban landscapes, mass poverty, and expensive imported goods. As the protagonist rushes along Petrovka for a job interview at a bank, she feels lost, helpless, and alienated in this unfamiliar city. The image of the “Intourist” hotel, once a symbol of progress and technical excellence, now represents impoverishment and the threat of demolition, mirroring the disintegration of the USSR, which was once seen as a promising project. The characters O. F. and Aunt Polly embody traditional representations of Moscow as a nurturing city-woman, associated with qualities such as warmth, hospitality, and care. The spaces connected to these characters, such as the currency exchange point and the rented apartment, become places of trust, closeness, security, and support, forming “her” Moscow for the protagonist in The Newcomer.
Reconstruction ofthepower supply system based onanalternative energy source
Authors: Polovnikova Lyudmila B.
Published: January 2024

The article presents a solution for the reconstruction of an oil refinery using gas piston power plants. The oil refinery is a structural subdivision of Kogalymneftegaz. The work of the plant is intended for the production of high-quality petroleum products for technological transport of the divisions of Lukoil — Western Siberia LLC in Kogalym, Langepas, Pokachi; in addition, the plant’s products are in demand at other enterprises of the Khanty-Mansiysk region. In the course of the study, the goal was to offer an alternative source of energy for the trouble-free operation of an oil refinery, to ensure the reliability of objects belonging to the first category. Based on the analysis of the existing power supply system of the plant, it was found that the power receivers of the ELOU-AVT-Bitumen plant are provided from two sources of power supply from the Tyumenenergo network, which does not guarantee uninterrupted and trouble-free operation of the plant. The power supply of the refinery is provided with a voltage of 6 kV from Substation No. 7 35/6 kV. Substation No. 7 is powered by 110/35/10 kV Substation Druzhnaya from the medium voltage side via two power feeders Druzhnaya-1 and Druzhnaya-3. In the study, the calculation of loads, short circuit currents was carried out, the necessary power equipment was selected, and a method was proposed for transferring the refinery to power supply from a stationary power plant operated on hydrocarbon gas utilized from the production process. The proposed solution allows: to eliminate the occurrence of emergencies at the refinery due to a power outage; reduce the cost of purchasing electricity and thereby reduce the cost of commercial petroleum products; increase the percentage of hydrocarbon gas utilization by reducing the amount of gas flared.
Simulation of blocking of hydraulic fracture near injector in a reservoir simulator
Authors: Shevelev Alexander P. , Gilmanov Alexander Ya. , Kasperovich Anton M.
Published: January 2024

Mature fields, as a rule, are developed using flooding technology. During long-term operation of field, in order to maintain the fluid flow rate at the same level, it is necessary to increase the bottom-hole pressure of the injector, which, when the pressure of the fracturing is exceeded, leads to the formation of fractures near the injectors. Uncontrolled growth of these fractures can lead to a breakthrough of water through it into the drainage zone of the producer and increase in the water cut of the production. This phenomenon has been observed in several fields, so the task of blocking of hydraulic fractures near injector is relevant. The existing mathematical models of blocking of hydraulic fractures near the injectors do not allow to determine the volume of leaks from the fracture in order to accurately calculate the volume of the injected reagent. The article describes the creation of a physical and mathematical model of injection of a polymer solution in water in the fracture. The aim of the work is to establish the dependencies of the critical fracture filling time and the volume of polymer leaks on the flow rate of the injected reagent. The mathematical model developed in the article is based on the laws of conservation of mass, momentum and energy for the oil, water and polymer. A reservoir simulator model describing the process of colmatation of hydraulic fracture near injector is created. The distribution of the concentration of the retained polymer was obtained both in the fracture and outside it. The critical time of filling the fracture was determined for the specified rock properties and technological parameters of the well operation. It is determined that the volume of polymer leaks becomes larger due to an increase in the flow rate of the injected displacement agent.
Compact multifilament model of resistive switching metal-oxide memristor
Authors: Ebrahim Abdulla H. A. , Gubin Alexey A. , Busygin Alexander N. , Udovichenko Sergey Yu.
Published: January 2024

A fairly simple compact circuit multifilament resistive switching model of a metal-oxide memristor with controlled multilevel conductance tuning is presented, which is in demand for self-training of large arrays of memristor synapses and information processing using them. A good agreement between the calculated and measured volt-ampere characteristics and the pulse-time dependent plasticity curve is shown.
Formation of a nanostructured film at the “hydrocarbon — graphene nanofluid” interface
Authors: Pakharukov Yuri V. , Shabiev Farid K. , Safargaliev Ruslan F.
Published: January 2024

The interaction mechanisms between graphene nanoparticles (GN) and oil molecules are crucial for successful oil recovery. More than a hundred studies appear in the press each year showing the effectiveness of using nanofluids based on graphene-like nanoparticles to enhance oil recovery in various reservoirs. Increased oil recovery with nanofluid injection is explained by changes in wettability, reduction of interfacial tension and changes in viscosity. Therefore, knowledge of the interaction mechanisms between graphene nanoparticles and hydrocarbons is an urgent task of modern science, both fundamental and applied.
A comprehensive study of the interaction of graphene nanoparticles and hydrocarbons was carried out in order to understand the mechanisms that affect the formation of microheterophase state at the interface of hydrocarbons and graphene nanofluids (GNF). Using the methods of X-ray analysis it was found that the structure of the microheterophase state is a nanocrystalline film. The paper presents the results of the film formation at the “hydrocarbon — graphene nanofluid” interface. It was found that both slow and fast growth of nanostructured films could be observed under different modes of heat sinking from the interface. At fast heat sinking a slow growth of the film with the formation of fractal structures of Mandelbrot set type is observed. With slow heat dissipation, rapid film growth is observed with the formation of a continuous homogeneous structure which is not a fractal.
The method of calculation of relative phase permeability functions based on the empirical interfacial interaction function
Authors: Zagorovskiy Mikhail A. , Stepanov Sergei V. , Shabarov Alexandr B.
Published: January 2024

The article describes the results of research about the creation of an empirical method for calculation relative phase permeability functions (RPP). The method based on calculation of interfacial interaction function (IIF) from the experimental SCAL data and searching multi-parameter dependences for the parameters of the approximation dependence of IIF. It is proposed to use a function defined on two segments of the domain of definition, for approximation of IIF.
The research had been carried out on laboratory data for group of terrigenous and carbonate samples. It had been established that the pressure losses due to interfacial interaction of oil and water during the joint flow of the water-oil mixture are at the maximum for the considered core samples from 60 to 90% of the total pressure losses.
Multi-parameter dependences for IIF parameters were found for both groups of data. It was defined that using of multi-parameter dependences for IIF parameters provides the quality of RPP forecast with deviation by 30% for terrigenous samples and by 22% for carbonate samples.
There was conducted the study of the influence of data set amount for multi-parameter dependences (training set) on the quality of RPP forecast (test set). It had been established that increasing of data set amount for multi-parameter dependences of IIF parameters has a positive effect on the quality of RPP functions forecast. At the same time, the increasing of data set amount in 2 times leads to decreasing of the average relative error of RPP calculation from 25.5 to 20.9% for terrigenous samples and from 70.3 to 23.6% for carbonate samples.