bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of B2O3/Bi2O3 on radiation shielding parameters of mobile phone waste glasses
Authors: Karami Haleh , Zanganeh V. , Ahmadi M.
Published: February 2024

Due to the high rate of waste glass of mobile in each year, using this wasting material in different ways can be helpful for the environment and human health. So that investigating the use of waste glass of mobile for shielding usages has been hardly regarded in recent years. In this study, the effect of different Bi2O3 contents (0–20 mass percentage) evaluated on the radiation protection ability and physical properties of an important recycling waste phone glass Bi2O3-SiO2-B2O3-ZnO-Al2O3 using Monte Carlo based code (MCNPX 2.6.0) and online Phy-X/PSD program has been investigated. Radiation shielding properties of glass compositions (equivalent atomic number, Half Value Layer, Mean Free Path, Linear Attenuation Coefficient, Exposure and energy absorption buildup factors, and Mean Free Path) investigated for wide various range of photon energies of medical energies from 0.015 up to 15MeV. By compassion of derived results with similar studies it was obviously shown that WCG with 20% of Bi2O3 content is the best material for gamma and neutron shielding usage.
An Intelligent and Informatics e-Health at-Birth Detection and Monitoring System for Children born with Down Syndrome in Rwanda: Design and Implementation
Authors: Claude Habimana Jean , Julienne Murererehe , Joselyne Rugema , Speciose Ingabire , Yvonne Uwamahirwe , Joselyne Nzayisenga , Leon Mutesa , Ntambara Boniface , Paul Niyoyita Jean
Published: February 2024

Rwanda is implementing a web-based system to improve awareness of at Birth Detection of Down syndrome (DS) among healthcare, parents, and communities. The system uses HTML, CSS, Java Script, PHP, and MySQL for front-end communication, with a flexible architecture for data gathering services. The web server maintains all information received from users in various health settings, while the database is accessible to authorized users through the internet. Users can record, view, get notifications, follow up, produce reports, and access all prior DS medical information. The MySQL DBMS stores login credentials, patient records, test results, transfers, actions, and health reports. Healthcare personnel can record suspicious DS cases and transfer them to District Hospital (DH) and Referral Hospital (RH) for testing and treatment. Feedback from RH is sent to DH, along with treatment recommendations for confirmed cases. Notifications are sent for further affected births treatment. The system is efficient, reliable, and effective, offering significant potential for improved care and timely interventions.
Comparative Analysis of State-of-the-Art Q\&A Models: BERT, RoBERTa, DistilBERT, and ALBERT on SQuAD v2 Dataset
Authors: ÖZKURT Cem
Published: February 2024

In the rapidly evolving landscape of natural language processing (NLP) and artificial intelligence, recent years have witnessed significant advancements, particularly in text-based question-answering (QA) systems. The Stanford Question Answering Dataset (SQuAD v2) has emerged as a prominent benchmark, offering diverse language understanding challenges. This study conducts a thorough examination of cutting-edge QA models—BERT, DistilBERT, RoBERTa, and ALBERT—each featuring distinct architectures, focusing on their training and performance on SQuAD v2.The analysis aims to uncover the unique strengths of each model, providing insights into their capabilities and exploring the impact of different training techniques on their performance. The primary objective is to enhance our understanding of text-based QA systems' evolution and their effectiveness in real-world scenarios. The results of this comparative study are poised to influence the utilization and development of these models in both industry and research.The investigation meticulously evaluates BERT, ALBERT, RoBERTa, and DistilBERT QA models using the SQuAD v2 dataset, emphasizing instances of accurate responses and identifying areas where completeness may be lacking. This nuanced exploration contributes to the ongoing discourse on the advancement of text-based question-answering systems, shedding light on the strengths and limitations of each QA model.
Effect of intraspecific and interspecific competition on the facultative and obligatory shredders forage activity in subtropical system
Authors: Durigon Giovana Rech , Cararo Emanuel Rampanelli , Lima-Rezende Cássia Alves , Rezende Renan de Souza
Published: February 2024

While the significance of competition for resources in shaping the structure of aquatic ecosystems is well recognized, its specific effects on the dynamics of allochthonous matter in streams have received limited attention and remain poorly understood, mainly between interspecific and intraspecific competition. In this study, we investigated the effects of interspecific and intraspecific competition on the shredder organisms Phylloicus and Aegla in leaf litter banks. The impact of competition was assessed through experimental treatments: i - Phylloicus competition-free; ii - Aeglacompetition-free; iii - intraspecific competition within Aegla; iv - intraspecific competition within Phylloicus; v - interspecific competition. In the competition-free treatment, a single organism was placed in a 2-L microcosm, whereas in the competitive pressure treatments, two organisms were placed in a 4-L microcosm, with a 0.05-mm mesh separating them. Our results revealed that interspecific competition had a greater impact on Phylloicus, while intraspecific competition exerted a stronger influence on Aegla. Phylloicusexhibited higher efficiency as a shredder compared to Aegla, which can be attributed to its broader feeding range and unique strategies in leaf litter utilization. The presence of potential competitors led to a reduction in consumption rates in Phylloicus, indicating its sensitivity to competition. Moreover, Aegla's predatory behavior and cannibalism may intensified intraspecific competition within the species. The findings highlight the importance of competition in shaping the feeding activity of shredder organisms in leaf litter banks, which ultimately affects nutrient cycling in aquatic ecosystems.
Theory of gravitational fields and Moran's I in economics to investigate clusters: the case of the USA
Authors: Capoani Luigi , Banin Mattia
Published: February 2024

In this article, the concept of gravitational fields applied to trade is revisited and extended to multiple economic variables, integrated within Moran’s I analysis. Following Isard’s thinking, emphasis is placed on the use of the gravitational model in spatial analysis, with the intent of theoretically developing an econophysical methodology. To map the interactions between the economic forces generated by the individual gravitational fields of various regions, the principle of vector superposition is applied to provide the resulting total field. Through a cross-analysis that employs gravitational fields and Moran's I, spatial concentration phenomena in the American market will be studied.
JEL classiﬁcation: A12, B1, B27, C31, F10, F20, R30.
Cinnamaldehyde down-regulates HPV oncoproteins E6 and E7 expression and enhances anti-cervical cancer activity via covalent binding to RPS16
Authors: Mulati Shulipan , Talihati Ziruo , Shen Fukui , Zhang Weiyi
Published: February 2024

The mortality rate among patients with cervical cancer (CVC) is a significant concern among female malignancies, posing a substantial threat to women's well-being. Human papillomavirus (HPV), a non-enveloped double-stranded DNA virus with epithelial characteristics, has been identified as a causative factor in CVC, primarily through persistent high-risk HPV infection. This study investigated the potential anti-CVC effects of CA in vitro and in vivo using the HPV-positive CVC cell line HeLa according to colony formation and cell wound healing, target fishing, molecular docking, network pharmacology analysis, cellular thermal shift, RNA interference and quantitative reverse transcription-polymerase chain reaction, immunofluorescent staining, immunohistochemical staining and xenografts assays. We found that CA could impede proliferation, induce cell cycle arrest, and prompt apoptosis by inhibiting the PI3K/Akt signaling pathway. Target fishing and molecular imaging utilizing an alkynyl-CA probe revealed the ribosomal protein S16 (RPS16) as a CA target, mediating the degradation of E6 and E7 proteins. The covalent binding of CA to RPS16 led to alterations in its stability. These findings highlight the huge potential of CA in designing and developing lead compounds for this patient population and suggest RPS16 as a novel therapeutic target.
Genes do not read DSM: a case report of tuberous sclerosis complex with multi- neuropsychiatric symptoms
Authors: Lü Wenqi , Sun Linyuan , Chen Taolin , Li Mingli , Li Jin , Kuang Weihong
Published: February 2024

Background
Tuberous sclerosis complex (TSC) is a genetic multisystem disorder characterized by widespread hamartomas in several organs. The variety of clinical manifestations makes it challenging to establish a definite clinical diagnosis. To our knowledge, there have been no previous reports of adult-onset TSC presenting with panic-like symptoms as the chief complaint and a combination of cognitive impairment and affective symptoms.
Case Presentation:
A 26-year-old unmarried Han Chinese female had suspicious panic-like symptoms over two years. There was persistent concern about the above symptoms. The depressive syndrome was followed a year ago. No aura, loss of consciousness, foaming at the mouth, motor paresthesia, or psychotic symptoms were reported in the course of the disease. The hospitalization was due to poor response to repeated outpatient visits. On physical examination after admission, several hypomelanotic macules were found on the patient's body. Auxiliary examinations suggestive of abnormalities include epileptic waves detected by electroencephalogram and scattered nodules detected by imagological examinations. The cognitive test indicated borderline intelligence. A rare genetic variation (TSC1 c.2625 + 367A > G) was also found. The patient was eventually diagnosed with tuberous sclerosis complex. After treatment with slow sodium channel blockers and serotonin and norepinephrine reuptake inhibitors, the focal seizure and affective symptoms were well controlled, while the cognitive function needed further long-term follow-up.
Conclusion
Clinicians should recognize that TSC is a multisystem disorder that may manifest multiple complaints. We report an adult-onset TSC with multi-neuropsychiatric symptoms and provide learnable points for clinicians from aspects of clinical manifestations, imaging, and genetics.
Solar Radiation and Geomagnetic Contribution of Consecutive 27-Day Recurrent Geomagnetic Storms to Variations of Equatorial Ionospheric Parameters and Spread F
Authors: YEERAM THANA
Published: February 2024

This study investigates solar radiation and geomagnetic effects of consecutive 27-day recurrent geomagnetic storms (RGSs) during 2007 on the variabilities in the equatorial ionospheric F-region in American Peruvian sector. Results show correspondence of quasi-periodic variations between geomagnetic activities and ionospheric responses in the F-region. In High-Intensity Long-Duration Continuous (AE) Activity (HILDCAA) events, the ionospheric responses are more variable than in non-HILDCAA. The critical frequency and peak heights of the F-layer tend to increase during storm-time in summer months, but decrease in response to enhanced equatorial electrojets. A new classification of daily variations in the virtual height of the F-layer (h′F) is proposed: (mode A) mixing of great height before noon and low height before midnight, (mode B) moderate height before midnight, and (mode C) mixing of low height before noon and great height before midnight. These (h′F) modes efficiently characterize ionospheric variabilities and processes. The great uplifts of (h′F) during night-time coincide with the presence of strong disturbance dynamo electric fields and disturbed neutral winds generated by intensified Joule heating in the summer months. The solar EUV plays a role in the uplifts during daytime. Zonal electric field disturbances and perturbations in neutral meridional winds critically contribute to the equatorial ionospheric responses and ESF variability. Most of inhibited/suppressed ESF occurred in mode A and in overshielding conditions. The inhibited ESF in the recovery phase is mainly contributed by a cooling state after great uplifts by daytime thermospheric winds.
Bearing Currents of Induction Machine – Fault Detection, Condition Monitoring, and Predictive Maintenance
Authors: Kudelina Karolina , Raja Hadi Ashraf , Naseer Muhammad Usman , Autsou Siarhei , Asad Bilal , Vaimann Toomas , Kallaste Ants
Published: February 2024

Bearing failures in electrical machines present significant challenges, drawing attention in diagnostic research. The widespread use of variable-speed drives in various motor applications has intensified the impact of bearing currents, requiring comprehensive exploration in academic and industrial settings. This paper thoroughly investigates the issue, examining damage types and diagnostic methods specific to bearing currents in induction machines. Additionally, it offers insights from experiments conducted in controlled laboratory environments to simulate bearing current faults. By outlining the findings, the paper contributes valuable knowledge on identifying and mitigating bearing-related issues in electrical machines. With the shift towards Industry 4.0 standards, which integrate advanced technologies into manufacturing processes, there's a growing emphasis on preventing production faults. Consequently, the paper extends its inquiry into signal pre-processing to enhance fault prediction accuracy by optimizing and refining machine signals. Given the dynamic nature of industrial standards and the rising demand for predictive maintenance strategies, this research holds significance. By striving for increased efficiency, reduced downtime, and enhanced reliability, the perspectives outlined aspire to make a meaningful contribution to the advancing field of predictive maintenance.
Increased Global Tensions Jeopardize Climate Targets
Authors: Dong Wenjie , Ran Qi , Liu Fei , Deng Rong , Yang Jie , Wang Kaixi , Wang Xinyue , Zheng Duofan , Li Chenhao , Liang Wenjun , Chou Jieming , Yuan Wenping
Published: February 2024

The Sixth Assessment Report of the Intergovernmental Panel on Climate Change highlights the reliance on optimistic scenarios such as shared socioeconomic pathways SSP1-1.9 and SSP1-2.6 to achieve the 1.5°C or 2°C climate targets by the end of this century[1]. However, these scenarios have not quantitatively assessed the impact of global tensions (measured as global military expenditure as a percentage of GDP) on CO2 emissions. Our research reveals that events such as the 2001–2011 War on Terror and the 2021 prelude to the Russian–Ukrainian war have led to a 0.041% (95% CI: 0.030–0.052) kg/USD increase in CO2 emission intensity (CO2 emissions per unit of GDP) for each 1% rise in global tensions. This increment accounts for 30% of the total change in CO2 emission intensity from 1995 to 2021. In the case of escalating global tensions, with the global military expenditure ratio exceeding thresholds of 11% (for SSP1-1.9) or 23% (for SSP1-2.6), the global surface temperature increase would fail to return below 1.5°C after the initial overshoot in SSP1-1.9, and the 2°C climate target would become unattainable in SSP1-2.6 by the end of this century. These findings underscore the potential of escalating global tensions to undermine climate targets, emphasizing the critical need for a more peaceful international environment to effectively limit global warming to 1.5°C or 2°C.
WITHDRAWN: Study on the pharmacokinetics of Polygonatum cyrtonema polysaccharide DPC1 through fluorescence labeling
Authors: Yong Jin , Zhang Chaozheng , Cao Yuening , Tang Shuang , Long Fei , Cao Zhixing , Lu Jun , Peng Teng
Published: February 2024

Polygonatum cyrtonema is a medicinal plant and its polysaccharides are used for immunomodulation and the treatment of hypoglycemia. Investigation of the tissue distribution and pharmacokinetics of P. cyrtonema polysaccharide can further elucidate its pharmacological mechanism. A fluorescence labeling approach using rhodamine B (RhB) as a fluorescent molecular probe was used for the quantitative assessment of the polysaccharide from dried P. cyrtonema (DPC1) samples, and the pharmacokinetics and tissue distribution of DPC1 were evaluated in mice after intraperitoneal or oral administration. DPC1 was successfully labeled with RhB, showing degrees of fluorescence labeling at 0.453% and 0.568% as determined by the ultraviolet and enzyme marker methods, respectively. DPC1-RhB was rapidly absorbed into the bloodstream after oral and intraperitoneal administration. The relative bioavailability of DPC1-RhB was as high as 48.648%, showing linear pharmacokinetic characteristics. After administration, DPC1-RhB was primarily distributed in the tissues of the heart, spleen, and lung, indicating that the drug has a targeted effect on these tissues. Overall, the findings provide a comprehensive reference for the in vivo distribution of DPC1, together with a foundation for further elucidation of its pharmacological mechanism and the development and application of DPC1 formulations.
Robustness Analysis of Public Transportation Systems in Seoul Based on General Multi-Layer Networks
Authors: Lee Seokjin , Kim Seongryong , Kim Jungeun
Published: February 2024

Public transportation systems play a vital role in modern cities, enhancing the quality of life and fostering sustainable economic growth. Modeling and understanding the complexities of these transportation networks are crucial for effective urban planning and management. Traditional models often fall short in capturing the intricate interactions and interdependencies in multi-modal public transportation systems. To address this challenge, recent research has embraced multi-layer network models, offering a more sophisticated representation of these networks. However, there is a need to explore and develop robustness analysis techniques tailored to these general multi-layer networks to fully assess their complexities in real-world scenarios. In this paper, we employ a general multi-layer network model to comprehensively analyze a real-world multi-modal transportation network in Seoul, South Korea. We leverage a large volume of traffic data to model, visualize, and evaluate the city's mobility patterns. Additionally, we introduce two novel methodologies for robustness analysis, one based on random walk coverage and the other on Eigenvalue, specifically designed for general multi-layer networks. Extensive experiments using the large volume of real-world data sets demonstrate the effectiveness of the proposed approaches.
Comparison of Clinical Observation and Upper GI Endoscopy in Corrosive Substances Ingestion: A Randomized Controlled Trial
Authors: Kara Yusuf Alper , Ergun Ergun , Ozguner Ismet Faruk
Published: February 2024

Background
Oral intake of corrosive substances is an important cause of morbidity and sometimes mortality in childhood. Early evaluation is important in determining the course of possible damage. This study aimed to compare early endoscopic evaluation and clinical observation methods in patients with corrosive substance ingestion.
Methods
Seventy-five patients with corrosive substance ingestion were hospitalized in a tertiary pediatric surgery clinic between January 2019 and December 2020. They were enrolled in a prospective randomized controlled manner, 35 of whom were in the endoscopy group and 40 in the clinical observation group, and their data were collected after obtaining consent from their families.
Results
It was observed that the most common chemical agents in hospitalized patients with a history of corrosive substance intake were dish polishers and sink openers, and contact with strong alkaline substances was the most common case. Endoscopic evaluation increased the total cost compared to clinical observation but decreased the nil per oral duration, the number of drugs they took, and the inpatient duration (p < 0.05). Neither the presentation symptoms nor physical examination findings were to the pH level of the corrosive substance ingested (p > 0.05).
Conclusions
Endoscopic evaluation could be a choice for reducing the length of hospital stay, drug doses, and the nil per oral period, but it increases the total cost. Since no cases with significant esophageal damage were detected in our clinic at the time of this study, the results should be supported by larger series.
A New Public Key Cipher System based on Linear Transforms with Elliptic Curve Arithmetic for Secured Communication
Authors: Ramachandran S , Kumaar Sindhu J
Published: February 2024

Secured data communication through public media and internet extremely depends the field cryptography. At present numerous cipher systems have been developed using encryption and decryption algorithms like DES, AES in the Digital world. Elliptic curve cryptography provides more security with lesser key size than other cryptographic techniques. In this paper we have proposed Three trapdoor one-way functions that are based on the Elliptic curves on the ring \(Z/nZ\) and a new El Gamal type public key cipher system together with the security measures on RSA Algorithm and ECC using linear transformations on vector space over finite field.
Лечение диффузной В-крупноклеточной лимфомы в условиях ГКБ № 52 Департамента здравоохранения Москвы: ретроспективное клиническое исследование, отражающее опыт одного центра, на основе анализа данных из собственного локального регистра
Authors: Мингалимов Марат Альбертович , Барях Е. А. , Поляков Ю. Ю. , Мисюрина Е. Н. , Желнова Е. И. , Яцков К. В. , Макешова А. Б. , Толстых Т. Н. , Чуднова Т. С. , Иванова Д. Д. , Кочнева О. Л. , Самсонова И. В. , Лысенко М. А.
Published: February 2024

Background. The term diffuse large B-cell lymphoma (DLBCL) defines a heterogeneous group of lymphatic tumors. DLBCL is the most frequent immunomorphological variant among aggressive non-Hodgkin lymphomas (NHLs) in adults. It accounts for 30–40 % of all NHLs. Long-term results of treating newly diagnosed DLBCL have not been reliably evidenced in healthcare practice and, therefore, require further study.

Aim. To assess the efficacy of chemotherapy for newly diagnosed DLBCL in terms of the 5-year progression-free survival (PFS) based on the analysis of data from the in-house hematology service registry at the Moscow City Clinical Hospital No. 52.

Materials & Methods. The study enrolled 156 patients with newly diagnosed DLBCL in the period from 2015 to 2022. The patients were 35–85 years of age (median 65 years).

Results. First-line R-CHOP/R-miniCHOP chemotherapy was administered to 70 % of patients, 28 % of patients received R-DA-EPOCH, and 2 % were treated either with R-B or R-CVP. Complete response was achieved in 100 (65 %) patients: 75 out of them (75 %) received R-CHOP/R-miniCHOP, whereas 25 (25 %) received R-DA-EPOCH. Induction mortality was below 2.5 %. The 5-year PFS was 32 % with the survival median of 20 months. As confirmed by the multivariate analysis, the age over 60 years (p = 0.003), high IPI risk group (p = 0.015), advanced stage of the disease (p = 0.002), and non-GCB subtype of tumor (p = 0.045) can be regarded as independent predictors of early DLBCL progression.

Conclusion. DLBCL is an aggressive B-cell lymphoma and one of the most frequent immunomorphological NHL variants in the clinical practice of the Moscow City Clinical Hospital No. 52. Despite the use of generally accepted standard immunochemotherapy regimens, the results attained by the present study illustrate unresolved challenges in chemotherapy for newly diagnosed DLBCL patients. By now, more effective first-line DLBCL therapy methods already exist, which are confirmed by the results of clinical trials. As it is sometimes impossible to further escalate immunochemotherapy for obvious reasons (age restrictions, health status, co-morbidities, etc.), a new promising strategy appears to be the personalized chemotherapy based on the study of genetic DLBCL profile of each particular patient.
Kenevirdeki ( Cannabis sativa L.) Kültürel Uygulamaların Kannabinoidlerin Üzerine Etkisi
Authors: ARSLANBAYRAK Mert , AYAN Ali Kemal
Published: February 2024

Kenevir, tarih boyunca insanlığın üzerinde durmuş olduğu, Cannabaceae familyasına ait tek yıllık önemli bitkilerden biridir. Ülkemizde kenevir genellikle kendir ve çedene adı ile bilinen endüstriyel bir bitkidir. Kenevir lif ve içerdiği kimyasal bileşikler sayesinde hem sağlık hem de tekstil yönüyle değerlendirilen, pek çok alanda da yeni nesil kullanım alanları keşfedilen önemli bir bitkidir.
Kenevirin ikincil metabolitleri genel anlamda kannabinoidler olarak isimlendirilmektedir. 100’ü aşkın kannabinoid olduğu bilinmekte birlikte, 70 kannabinoid 10 başlık altında tanımlanmıştır. Tıbbı anlamda en çok üzerinde durulan fitokannabinoidler; THC (tetrahidrokannabinol), CBD (Kannabidiol), CBDA (Kannabidiolik asit), CBG (Kannabigerol), CBGA (Kannabigerolik Asit) tir. Bu kimyasal bileşikler genetik ve çevre interaksiyonlarından oldukça etkilenmektedir. Özellikle çevresel faktörler bitkinin terpenofenolik yapıdaki ikincil ürünlerinin sentezini etkilediği pek çok çalışmanın sonucunda bildirilmiştir. Bu bağlamda, kenevirde üretim tekniklerinin kenevirdeki fitokannabinoid sentezi üzerindeki etkileri noktasında literatür ışığında bir değerlendirme yapılmıştır
Pirimidin Halkası İçeren ONS Tridentat Schiff Baz Ligand ve Cu(II), Co(II) ve Pt(IV) Komplekslerinin Sentezi, Karakterizasyonu ve Termal Çalışmaları
Authors: TAŞKIN İbrahim , SOĞUKÖMEROĞULLARI Hatice Gamze , SÖNMEZ Mehmet
Published: February 2024

Bu çalışmada, N-aminopirimidin-2-tiyon ve 2-furfural'ın kondenzasyonundan türeyen ONS tridentat Schiff baz ligand ((1-(furan-2-ilmetileneamino))-4-fenil-5-benzoil-pirimidin-2-tiyon) ve Pt(IV), Co(II), Cu(II) kompleksleri sentezlendi ve NMR (sadece ligand), UV-Vis, FT-IR, manyetik duyarlılık, elementel analiz, TGA/DTA ve molar iletkenlik ile karakterize edildi. Sentezlenen bileşiklerin elektrolitik iletkenlik değerleri 0.82-5.19 µS/cm aralığında olup, bileşikler elektrolitik iletkenlik özelliğine sahip değildir. Manyetik duyarlılık ölçümleri L-Cu, L-Co ve L-Pt kompleksleri için sırasıyla 1.70 BM, 4.64 BM ve 2.48 BM olarak kaydedilmiştir. Cu(II) ve Pt(IV) kompleksleri için oktahedral geometri, Co(II) kompleksi için tetrahedral geometri önerilmiştir. Schiff baz metal komplekslerinin termal kararlılıkları incelenmiştir. Schiff baz metal komplekslerinin termal kararlılıklarının Pt>Co>Cu şeklinde olduğu görülmüştür.
Enhance or Leave It: An Investigation of the Image Enhancement in Small Object Detection in Aerial Images
Authors: TEKİN Alpay , BOZKIR Ahmet Selman
Published: February 2024

Recent years of object detection (OD), a fundamental task in computer vision, have witnessed the rise of numerous practical applications of this sub-field such as face detection, self-driving, security, and more. Although existing deep learning models show significant achievement in object detection, they are usually tested on datasets having mostly clean images. Thus, their performance levels were not measured on degraded images. In addition, images and videos in real-world scenarios often involve several natural artifacts such as noise, haze, rain, dust, and motion blur due to several factors such as insufficient light, atmospheric scattering, and faults in image sensors. This image acquisition-related problem becomes more severe when it comes to detecting small objects in aerial images. In this study, we investigate the small object identification performance of several state-of-the-art object detection models (Yolo 6/7/8) under three conditions (noisy, motion blurred, and rainy). Through this inspection, we evaluate the contribution of an image enhancement scheme so-called MPRNet. For this aim, we trained three OD algorithms with the original clean images of the VisDrone dataset. Followingly, we measured the detection performance of saved YOLO models against (1) clean, (2) degraded, and (3) enhanced counterparts. According to the results, MPRNet-based image enhancement promisingly contributes to the detection performance and YOLO8 outperforms its predecessors. We believe that this work presents useful findings for researchers studying aerial image-based vision tasks, especially under extreme weather and image acquisition conditions
Çimento Esaslı Kompozitlerde Çatlak Oluşumu ve Çatlak Kontrolünde Lif Kullanımının ve Karışım Parametrelerinin Etkisi: Derleme
Authors: RAMAZANOĞLU Berfin , KAYA Necim
Published: February 2024

Beton, yüksek basınç dayanımlarını karşılayabilmesine rağmen doğası gereği çekme ve eğilme dayanımı düşük olduğundan çatlak oluşumuna karşı hassas bir yapı malzemesidir. Beton, çok fazlı kompozit bir malzeme olup, davranışı kendisini oluşturan bileşenlerin özelliklerine göre değişkenlik göstermektedir. Her bir karışım parametresinin çatlak gelişim mekanizması üzerinde önemli etkileri bulunmaktadır. Mevcut derleme çalışmasında çimento esaslı malzemelerde çatlak gelişim mekanizması ve karışım parametrelerinin çatlak oluşum mekanizması üzerine olan etkileri özellikle son 10 yılda yapılan çalışmalar esas alınarak geniş bir literatür taramasıyla araştırılmıştır. Literatür araştırması sonucunda, düşük su/çimento oranı, parçacık boyutu dağılımı ve karışım oranlarının optimize edilmesiyle maksimum agrega parçacık yoğunluğunun elde edilmesi, çimentonun bir kısmının optimum miktarda mineral katkılar ve nano malzemelerle değiştirilmesi, gevrek özellik gösteren çimento matrisinin çeşitli liflerle hibrit kombinasyonun, betonun dayanımını, sünekliğini ve tokluğunu iyileştirerek çatlak oluşumuna karşı dayanımı arttırdığı anlaşılmıştır.
Efficient Energy Level Calculations in InP 2D-Quantum Box with Two Distinct Potentials Using the Sparse Numerov Method
Authors: KOÇ Fatih
Published: February 2024

In this study, energy level calculations for an InP 2D quantum box structure with two distinct (infinite potential power-exponential) potential potentials have been conducted using the sparse Numerov method. The 2D Schrödinger equation has been transformed in accordance with the sparse Numerov approach, followed by the creation of the solution matrix employing appropriate finite difference expressions. A comparative analysis of calculation results has been performed with respect to CPU time, memory usage, and ground state energy for both O(h^4) and O(h^6) accuracy. The suitability of the sparse Numerov method for 2D nanostructures has been thoroughly discussed. The results revealed that the sparse Numerov approach yields physically meaningful and rational outcomes in the InP 2D quantum box structure. Importantly, it demands significantly lower CPU time and memory resources compared to the classical Numerov method, emphasizing its practical applicability in this context.
Proactive career behavior in management: A systematic literature review
Authors:   St. Petersburg State University, Bordunos Aleksandra A. , Kosheleva Sofia V. ,   St. Petersburg State University
Published: February 2024

The purpose of the conducted systematic review is to identify how organizations can promote proactive career behavior among employees. The review includes 91 articles published in highly ranked English language journals till 2022. The review covers three categories of job seekers — the employed (the domestic labor market), those in active search (the external labor market), students. The employed workers include both new recruits and those who are interested in further career advancement. The study interprets the key definitions related to proactive career behavior and clarifies the variants of operationalization. The authors suggest four measures how to promote employees’ proactive career behavior. Due to the novelty of the topic in the domestic academic context, the identified definitions, operationalization and methods of organizational support require empirical testing in Russian organizations. The paper introduces the publications in highly ranked journals; it increases the credibility of the obtained results and shows possible ways of empirical testing of the identified assumptions. The practical significance pertains to companies’ interest in well-being, diversity and inclusion programs. Supporting employees in their efforts related to career success has a positive impact on their well-being and expands a range of tools for managing diversity through a greater autonomy in building individual career trajectories. In Russia, most of the research on proactivity is conducted in the fields of psychology and sociology. The present review suggests a range of issues for management, shifting the focus to the role of organizations in the career success of their employees.
Servitization in the digital age: A systematic review
Authors:   Graduate School of Business, HSE University, Sharko Elena R. , Rebiazina Vera A. ,   Graduate School of Business, HSE University
Published: February 2024

With the growth of digitalisation, more forms of innovative activity of companies emerge; it increases the interest of researchers to the relevance of introducing the concept of servitization in business functioning in an online environment. The problem is in a fragmentary nature of the existing studies since no general definition of the phenomenon of “servitization” has been formed yet. The purpose of this study is to perform a systematic review of articles from various databases, to overview the existing approaches to determining the role of servitization in the PSS model and to formulate the authors’ definition of this concept. In this study, we identified a common array of existing articles on servitization (1 659 conceptual, meta-analytical and empirical) from the databases of Scopus, Web of Science and Emerald Insight, which were analysed according to different criteria for inclusion or exclusion from the final pool of articles resulting in 24 papers selected for the detailed analysis. The results include the developed own definition of servitization, as well as the identification of four basic approaches to this concept. The author’s’ contribution to the development of the theory of servitization is strengthening of the focus on the role of servitization in the Production — Service — Solution model. The introduction of the concept of servitization improves the innovative activity of companies presenting their product in the digital environment. Thus, based on further studies of the properties and characteristics of servitization, effective decision-making models for doing business in the digital economy can be formed.
ESG quality management: Тhe role of digital business transformation
Authors:   Volgograd State Technical University, Morozova Irina A. , Smetanina Anastasia I. ,   Institute of Scientific Communications, Smetanin Anton S. ,   Volgograd State Technical University
Published: February 2024

The article explores the prospects for the most complete elucidation of the potential of Russian business products for improving their quality through the ESG quality management in the context of digital business transformation based on artificial intelligence and big data. Econometric modeling of the dependence of the quality management effectiveness in business is carried out by using the method of regression analysis. Two alternative models are constructed and compared. The first model is compiled in isolation from the effectiveness of ESG management. The second model is compiled together with the effectiveness of ESG management and the active use of artificial intelligence and big data in business. The prospects for increasing the effectiveness of quality management in Russian business along with maximizing the effectiveness of ESG management are evaluated based on the best international experience and the obtained regression models. Comparison of the results in the alternative models allowed the authors to justify the advantages of ESG quality management based on artificial intelligence and big data. The results include the development of a forward-thinking approach to ESG quality management in the context of digital business transformation. This approach provides a number of advantages for ESG quality management including firstly, broader opportunities for obtaining state (tax, subsidiary) support for the introduction of artificial intelligence and big data the flexibility to raise funding through a combination of sustainable investments in ESG and investments in artificial intelligence and big data. Secondly, more stable consumer preferences, more sustainable competitive advantages, and higher and more permanent loyalty. Thirdly, reliance on dynamically developing and increasingly accessible technologies for intellectual support in making managerial decisions based on artificial intelligence and big data (technologies are being introduced into the activities of the business itself).
Bending of a clamped thin isotropic plate by the Kantorovich method using special polynomials
Authors:   Emperor Alexander I St. Petersburg State Transport University, Goloskokov Dmitry P. , Matrosov Alexander V. ,   St. Petersburg State University, Olemskoy Igor V. ,   St. Petersburg State University
Published: February 2024

The problem of bending a thin isotropic rectangular plate clamped on all four sides under the action of a normal load uniformly distributed over its surface is considered. An analytical solution of the boundary value problem for the resolving differential equation with respect to the normal deflection of the plate is obtained by the method of L. V. Kantorovich using special-type polynomials satisfying homogeneous boundary conditions. A feature of these polynomials is the so-called “quasi-orthogonality” property of the first and second derivatives, which leads to the splitting of the system of ordinary differential equations of the L. V. Kantorovich method into separate ordinary differential equations that are easily solved analytically. However, this property of polynomials is only approximately fulfilled. Two solutions are compared: an analytical one under the assumption of “quasi-orthogonality” of the first and second derivatives of polynomials and a numerical-analytical one without this assumption. The stress-strain state in the neighborhoods of corner points has been studied. It is shown that the moments and shear forces tend to zero when approaching the corners of the plate, as well as a double change in the sign of the shear force on the edge of the plate in the neighborhoods of the corner points.
The core in differential games on networks with communication restrictions
Authors:   St. Petersburg State University, Tur Anna V.
Published: February 2024

In this paper we consider a class of differential games on networks. It is assumed that the players are identified with the nodes of the network and their interaction takes place along the paths of this network. A characteristic function of a special kind is used, which takes into account the network structure of the game. The C-core is studied as a cooperative optimality principle. An illustrative example is considered.
Cooperative game theory methods for determining text complexity
Authors:   Karelian Research Center of the Russian Academy of Sciences, Khitryi Andrei V. , Mazalov Vladimir V. ,   Karelian Research Center of the Russian Academy of Sciences,   St. Petersburg State University, Bure Natalia A. ,   St. Petersburg State University, Drobnaya Polina V. ,   Petrozavodsk State University
Published: February 2024

We propose a method for estimating the complexity of texts based on the methods of cooperative game theory. The players in this game are the lengths of words in the text. The game itself is represented as a voting game in which the value of a player is determined by the number of coalitions in which the player is key. The ranks of the players are formed by computing the Shepley—Schubik value or the Banzaf index in a voting game with a given voting threshold. Thus, a vector of Shepley—Schubik or Banzaf values is assigned to each text. After that, the vector space is used to rank the texts in terms of complexity based on the expert evaluations obtained in this domain.
Theodore Géricault’s Living Picture “Raft of the Medusa” in Scenography: Visual Experience of the Romantic Era
Authors:   Vaganova Ballet Academy, Nikiforova Larisa V. ,   Herzen State Pedagogical University of Russia, Zinovyeva Anna M. ,   HSE University
Published: February 2024

This article demonstrates the connections between visual and the theatrical mise en scène, raises the question of the inclusion of a live painting in the theatrical narrative as a form of interpretation of original painting, and finally presents the diversity of visual experience of the era in which static images coexisted with the moving ones. For the first time Géricault’s painting was animated on stage in 1820, a year after it was exhibited at the Salon (W. T. Moncrieff ’s melodrama “The Wreck of the Medusa, or the Fatal Raft”, London). Then in 1839 audiences saw it in Paris in a drama by Ch. Denoyer at the Théâtre Ambigue Comique and in an opera by F. Flottov to a libretto by the Cognard brothers at the Théâtre Renaissance. Denoisier’s drama proved to be the most suitable for transfer to other stages, and from 1847 to 1876 Géricault’s picture came to life at the Alexandrinsky Theatre in St. Petersburg, and on other Russian stages until 1914. As far as we know, none of the Russian art and theatre historians have paid attention to the stage embodiment of the famous picture. In the works on the history of Russian theater, Ch. Denoyer’s play is mentioned, but no more than that. On the contrary, foreign researchers of the 19th century art treat with great interest the interaction of painting, theater, and new optical spectacles in a single field of visual experience, including such classics of visual studies as P. Virillo and J. Creri. But neither they nor others have touched the Russian material. The article fills the gap in Russian art history and presents an analysis of the contexts in which the story of the Géricault’s living picture aroused interest; it traces the history of the transfer of Géricault’s painting to the Russian stage basing on archiveal sources.
Decorative Elements in the Composition of Facades of Wooden Art Nouveau Buzuluk 19th–20th Centuries
Authors:   Orenburg State University, Shleyuk Svetlana G. , Chepurova Olga B. ,   Orenburg State University
Published: February 2024

Buzuluk is a small town, part of the Orenburg region, located on the border of the Samara and Orenburg regions, next to the unique forest area of the Buzuluksky Bor National Park. Traditionally, the main building material in these places was pine wood — a relatively light and affordable material in processing technology. The development of scientific and technological progress, the formation of industry and economy, capital accumulation of the late 19th — early 20th centuries. during this period, it contributed to the active construction of cities and, as a result, the population growth in them. The new “Art Nouveau” style, developing during this period in large cities, spread to the outskirts of the Russian Empire, but in a modified, adapted form. So, Buzuluk today is almost the only city in Russia that demonstrates an example of mass wooden buildings in the Art Nouveau style of the turn of the 19th–20th centuries. A number of scientists were engaged in the study of wooden structures of the regional center of Buzuluk and the cities of the Southern Urals, but none of them considered specific decorative elements that became the basis for the formation of variable ornamental compositions of wooden modern facades of the turn of the 19th–20th centuries, which confirms the relevance of this study. The result of the study is also a description of the artistic, compositional, stylistic and semantic features of the ornamental decor of the Art Nouveau style of the city of Buzuluk. The stylistics of the ornamental compositions of the facades of the wooden architecture of Buzuluk shows the phenomenon of contradiction characteristic of the symbolistic trend of modernity, combining the synthesis of symmetry and asymmetry in the organization of the composition of facades and ornamental motifs, mixing the symbolism of modernity with folk traditional elements. The material is supplemented with graphic reconstructions of residential buildings, which make it possible to determine the principles of compositional construction of ornamental decor.
Gender Settings in City Design
Authors:   Kazan State University of Architecture and Engineering, Mikhailov Sergey M. , Mikhailova Aleksandrina S. ,   Kazan State University of Architecture and Engineering, Khafizov Rafik R. ,   Kazan State University of Architecture and Engineering, Nadyrshine Nail M. ,   Kazan State University of Architecture and Engineering, Nadyrshine Liliya I. ,   Kazan State University of Architecture and Engineering
Published: February 2024

The article discusses the issue of gender principle in city design, which is presented to designers as the basic approach to the modern design theory. It’s manifestation in architecture and design can be considered in various aspects, related to composition in creating the architectural form: shape, color, texture, material. In addition to material components, gender in architecture and design is manifested in a special zoning of space and sound environment. The article also reveals the content of the categories of “feminine” and “masculine” in terms of the construction of gender metaphors: plastic contrasts, semantic contrasts, spheres of association. The issue of conscious consideration of gender factor in the design process raises the problem of understanding the general regularities of its development in the design of the city, the relationship with the socio-cultural processes and historical conditions. The authors consider the manifestation of gender factor at various levels of city design: formation of the image and branding of the city, the urban plan and urban structure, the urban ensemble and the architectural object, the design content of the urban environment, visual communications and dynamic forms. Each of the levels has a certain independence and its own forms of interaction with other types of design and artistic activity. Therefore, the manifestation of “gender” in urban design should be considered at similar hierarchical levels. As the study has shown, in architecture and art there is an increase in the diversity of gender manifestations, expanding the range of gender roles, increasing the contrast between feminine and masculine, gender metaphors act as a form of individualization and enhancement of expressiveness of the image. Metaphorical comprehension of the design situation in terms of feminine and masculine allows to reveal additional contrasts and enhance the expressiveness of the artistic image.