bluuebunny/crossref_metadata_2025 huggingface dataset:
Experiências e prospecções do letramento audiovisual no Instituto Federal de Ciência, Tecnologia E Educação – campus Santos Dumont
Authors: Rabello Silva João Gabriel , Júlio Guedes Pinto Priscila
Published: October 2024

Este artigo objetiva a­presentar a importância do letramento audiovisual para o desenvolvimento de uma educação emancipatória, visto que a pandemia do novo coronavírus evidenciou o quanto as competências midiáticas são pouco desenvolvidas no Brasil. Com base nisso, discute-se não só o termo literacia, como também a construção histórica do conceito de literacia midiática ou educação para a mídia, através de teóricos da educação e da Declaração de Grunwald. Apoiado em ideias do filósofo Vilém Flusser, há a defesa da importância do desenvolvimento das competências midiáticas no contexto da educação técnica e tecnológica, com um breve panorama da educação técnica no Brasil, que acarreta a criação dos Institutos Federais. Por fim, analisa-se as experiências com letramento audiovisual ocorridas no Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais, campus Santos Dumont, prospectando o potencial para desenvolvimento de projetos de extensão que promovam a experimentação cinematográfica para estudantes.
Antioxidant Capacity and Phenolic Profile of Defatted Seed Powder Derived from Organically Grown Vine Crops
Authors: GITEA Daniela , GITEA Manuel Alexandru , RADU Andrei-Flavius , PASCA Manuela Bianca , BUNGAU Simona Gabriela , TIT Delia Mirela
Published: October 2024

Grape seeds derived from winemaking pomace represent a significant waste stream with potential for valorization due to their rich phenolic content. The present study aimed to assess the phenolic composition and antioxidant potency of defatted grape seeds powder (DP) resulting after oil extraction through three different methods (i.e., cold stirring (ST), ultrasound-assisted extraction (US), and microwave-assisted extraction (MW)) from two grape varieties (i.e., Fetească Regală and Merlot) grown under organic farming conditions. The phenolic profile was determined using High-performance liquid chromatography with diode array detection and mass spectrometry operating in electrospray ionization positive mode, while the total phenolic content was determined using an adapted Folin-Ciocalteu technique, The samples' antioxidant properties were determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging ability assessments, as well as Cupric ion reducing antioxidant capacity and Ferric reducing antioxidant power assays. The phenolic qualitative profile differed between the two varieties and was unaffected by the defatting method. Instead, at the level of each variety, significant variations (p<0.05) were observed in the quantity of phenolic compounds, depending on the defatting method. Moreover, the total phenolic content was significantly higher in the MW-DP compared to ST-DP and US-DP (p<0.05), particularly from Fetească Regală grape seeds. The DPPH assay demonstrated the highest antioxidant activity in MW-DP from Fetească Regală. The study underscores the importance of the extraction methods and grape variety on the phenolic profile and antioxidant potency of DP. These findings suggest potential applications in pharmaceuticals, functional foods, and cosmetics, offering sustainable solutions for grape pomace utilization.
Sustainable experimental cultivation of the Greek endemic Helichrysum amorginum Boiss. and Orph.: Assessment of the total phenolic content at different flower harvest stages
Authors: STAVROPOULOS Georgios , KARAPATZAK Eleftherios , ARGYROPOULOU Aikaterini , VASSALOS Evangelos , KAKABOUKI Ioanna , SKALTSOUNIS Leandros-Alexios , PAPASTYLIANOU Panayiota
Published: October 2024

Helichrysum amorginum Boiss. and Orph. constitutes a range-restricted, endemic species of Greece with known pharmaceutical potency. The current work presents the results of a targeted evaluation of the total phenolic content (TPC) of methanolic extracts of H. amorginum flower heads under cultivation conditions at three consecutive harvest stages in two separate cultivation locations across a period of two years (2018 and 2019). The harvested inflorescence tissue was assessed for TPC via the Folin–Ciocalteu method in three and four-year old H. amorginum individuals. Older plants, during the second evaluation year, generally showed higher flower TPC content throughout. The pooled analysis of the results indicated significant differences in TPC among samples of extracts prepared with plant material from different harvest stages with the early flowering stage (A) presenting higher TPC in both experimental cultivation locations (142.6-156 mg GAE g-1 extract on average among the two cultivation locations) followed by the full bloom stage (B) (139-145.7 mg GAE g-1 extract on average) and the late bloom or early post-anthesis stage (C) which showed the lowest TPC in all cases (130.3-131 mg GAE g-1 extract on average). The current results provide for the first-time basic information on the optimum inflorescence harvest stage during the prolonged flowering period of cultivated H. amorginum in terms of TPC. The proposed work can be incorporated into the establishment of a sustainable cultivation protocol for achieving polyphenol-rich extracts and ultimately contributes to the utilization of H. amorginum in the pharmaceutical/cosmetic sectors.
Aspectos metodológicos do estudo Comercialização de Alimentos em Escolas Brasileiras (Caeb)
Authors: Canuto Raquel , Gomes Ferreira Clark Sabrina , Delazari Borges Luiza , Pereira de Castro Júnior Paulo César , Ferreira Tavares Letícia , De Oliveira Cardoso Letícia , Silva do Carmo Ariene , Loures Mendes Larissa
Published: October 2024

Apresenta os aspectos metodológicos da concepção e organização do estudo Comercialização de Alimentos em Escolas Brasileiras, que teve como objetivo avaliar aspectos relacionados à comercialização de alimentos e bebidas em escolas privadas, a partir de informações coletadas com gestores de cantinas escolares e ambulantes presentes no entorno imediato das escolas. Realizou-se um estudo transversal em escolas privadas, de ensino fundamental e médio que possuíam cantinas, nas 26 capitais brasileiras e no Distrito Federal. Foi empregada aleatória simples com reposição inversa, ao final, foram avaliadas 2.241 cantinas e 700 ambulantes. A proporção de perdas amostrais foi de 21,2%. O questionário foi desenvolvido e avaliado por especialistas contemplando questões sobre: informação alimentar e nutricional, infraestrutura para alimentação, conveniência, preço, disponibilidade, variedade e promoção. A logística contou com uma equipe coordenadora que conduziu os treinamentos, realizou a gestão e controle da qualidade dos dados, pesquisadores locais e uma empresa que auxiliaram no trabalho de campo. As coletas ocorreram entre 2022 e 2024. As principais dificuldades de implementação foram sua concomitância com o período eleitoral de 2022, episódios de violência nas  escolas, políticas internas das escolas e a complexidade da diversidade cultural e a vasta extensão territorial brasileira. Como pontos fortes destacam-se o ineditismo dos dados coletados em profundidade e representatividade, o uso das evidências geradas para proposição de políticas públicas de regulação do ambiente alimentar escolar e o apoio na construção de uma rede de pesquisadores na temática.
Satisfaction Model in Romantic Relationships: Basic Psychological Needs, Mindfulness, Relationship Quality, Attribution Styles
Authors: Güleç Sezen , Bilgin Mehmet
Published: October 2024

Relationships are an important component of human mental health. In this study, the relationships between romantic relationship satisfaction and basic psychological needs, mindfulness, relationship quality, and attribution styles in university students were examined within the framework of the proposed model of Satisfaction in Romantic Relationships. The study sample consisted of 1057 university students from Turkey. According to the results of the study, basic psychological needs predict Romantic Relationship Satisfaction. The relationship between basic psychological needs and romantic relationship satisfaction is mediated by causality-responsibility attribution styles, mindfulness, and relationship quality. Relationship quality and mindfulness mediate the relationship between causality-responsibility attribution styles and romantic relationships satisfaction. Mindfulness predicts romantic relationships satisfaction. In the relationship between mindfulness and romantic relationship satisfaction, the relationship quality mediates for the I.Structural Model, and the mediating effect is not significant for the II.Structural Model.
Uso de tecnologías para la gestión y preservación de bienes patrimoniales
Authors:   Universidad Politécnica Salesiana, Quito (Ecuador)
Published: October 2024

La preocupación por salvaguardar el patrimonio cultural frente a efectos antrópicos como la urbanización acelerada, el cambio climático y otros riesgos ha impulsado la búsqueda de soluciones mediante el aprovechamiento de nuevas tecnologías. El presente libro describe la integración de estas tecnologías en la gestión del patrimonio, ofreciendo soluciones adecuadas para el registro, la documentación, la conservación y la difusión de los bienes patrimoniales. El texto se compone de diversas investigaciones realizadas por académicos e instituciones públicas que han implementado estas tecnologías, teniendo en cuenta los marcos normativos vigentes y las especificaciones requeridas para el cuidado de cada bien patrimonial.
Nonlinear oscillations of a current-carrying string in a magnetic field
Authors:   Tomsk Polytechnic University, Tomilin Aleksandr K. , Konovalenko Ivan S. ,   Tomsk Polytechnic University, Konovalenko Igor S. ,   Tomsk Polytechnic University
Published: October 2024

The nonlinear properties of a string must be taken into account when creating string systems that are used in transducers and musical instruments. The forced oscillations of an electrically conductive string in a magnetic field are described by a nonlinear integro-differential equation. The amplitude-frequency characteristics of nonlinear resonances of the first and second orders are obtained. The damping factor of the first-mode oscillations is determined from the optimal coincidence of the experimental and theoretical amplitude-frequency characteristic graphs. The experimental amplitude-frequency characteristics for the first-order resonance is obtained using a laboratory setup with a copper string 0.4 mm in diameter and 0.57 m long, having a certain initial tension. The cumulative damping factor of the first mode is obtained, which takes into account all the dissipative factors of a real string system. Low-frequency thermoparametric oscillations of the second mode are observed in experiments with a string. It follows from the analysis of the Mathieu equation that parametric resonance arises even at very low amplitudes of the thermal tension of a string, and it must be taken into account in the frequency analysis of oscillations of string systems. The authors are grateful to Tomilin V.A. for his help in performing the calculations and graphic work. The authors declare that they have no conflict of interests.
Thermodynamic modeling of high-energy thermite systems based on calcium iodate
Authors:   Tomsk State University, Enkov Maksim O. , Gorbenko Tatiana I. ,   Tomsk State University, Gorbenko Mikhail V. ,   Tomsk Polytechnic University
Published: October 2024

The article presents the results of a thermodynamic study of the component content influence and their physical and chemical properties on the regulation of the main energy characteristics and combustion product characteristics of thermite systems based on calcium iodate containing Al, B and Ti. The adiabatic combustion temperature, enthalpy of combustion products, specific impulse, exhaust velocity of combustion products, mass fraction of condensed phases, content of gaseous and condensed combustion products are determined. The influence of the metal oxide/metal fuel content in the thermite system composition on the main energy characteristics was assessed. Based on a comparison of the calculation results of the thermite systems thermodynamic and thermophysical characteristics, it seems possible to divide the studied thermite systems into 3 functional groups according to their application. Taking into account the ratio of components, these can be: 1) thermite systems for welding processes and 2) thermite systems for perforating, cutting metal structures (CaI2O6/Al and CaI2O6/Ti); 3) thermite systems as a component of energy compositions capable to inactivate harmful aerosol spores and bacteria (CaI2O6/B), since due to the low combustion temperature of CaI2O6/B, a longer burning time of such systems leads to a gradual release of iodine.
The challenging concept of eradication: A core concept guiding and frustrating public health
Authors: Caplan Arthur , Mamo Nathaniel
Published: October 2024

The celebrated 1980 announcement that smallpox had been eradicated was made using the following definition of eradication: “Permanent reduction to zero of the worldwide incidence of infection caused by a specific agent as a result of deliberate efforts: intervention measures are no longer needed.” Public health around the world works with this definition of “eradication,” setting it as a goal for other infectious disease control programs. The definition is simple. Its application, however, has produced long-running and complex public health campaigns that threaten the commitment of funders, health care providers, and governments. In this paper, the authors demonstrate the disease-specific challenges of eradication through the example of the Global Polio Eradication Initiative (GPEI). While many deem eradication worth its high costs because it is the end of morbidity and mortality from a disease, it does not mean the end of disease control efforts. Public health must be prepared for the possibility of disease reoccurrence in the form of undetected natural reservoirs of disease, lab leaks from stored samples, bioterror attacks using stolen samples, and the synthetic recreation of microbes. This paper clarifies the role of reoccurrence prevention in eradication, calling for its addition in the definition of eradication.
Environmental Psychological Characteristic Supporting the Football Player’s Development in Indonesia and Malaysia
Authors: Akbar Amin , Karim Zulakbal Abd , Zakaria Jaffry
Published: October 2024

Background. The development path of a football player toward becoming a professional player involves four main aspects: physical, technical, tactical, and psychological ones.
Objectives. This study aimed to examine the psychological characteristics of the environment that influence and contribute to the development of football players under 17 years old in Indonesia and Malaysia.
Materials and methods. This study used a qualitative approach, namely evolved grounded theory, and the data collection process was conducted using three distinct methods: semi-structured interviews, observation, and document analysis. Twenty-five coaches participated in this study, comprising fifteen coaches from various football academies in Malaysia and ten coaches from Indonesia. All coaches involved in this study have a license and at least five years of experience as coaches under 17. The data collected and analyzed began with open coding, axial coding, and selective coding, and the analysis was assisted by using qualitative research software, namely N-Vivo 14.
Results. The findings revealed that several aspects influenced player development, such as policy support, including structured and competitive age group competitions, a healthy football ecosystem; other results have been defined as relationships and cooperation supported by family, friendship between clubs, and teamwork. Finally, the study underscored the significance of involving coaching factors, including passion, patience, and coach psychological treatment abilities. These are the psychological characteristics of the environment that can influence the development of football players.
Conclusions. It is hoped that the results of this study can be used as a reference for coaches, the Indonesian Football Association, and the Malaysian Football Association to create a policy that can support football players under 17 years from all aspects, including psychology.
Outcomes of Total Hip Replacement in Septic Arthritis of the Native Hip Joint Amongst the Adult Population: A Systematic Review v1
Authors: Cheong Teddy , Varma Selvakumar Surya , Kwang Jin Goh Ryan , How Moo Ing
Published: October 2024

Background: Septic arthritis is a debilitating condition that results in joint destruction and irreversible loss of joint function. Surgical treatment options include arthroscopy, resection arthroplasty and total hip replacement (THR). There is existing literature on the treatment of septic arthritis of various joints including periprosthetic or native joints. However, to our knowledge, there is a lack of a consolidated review that focuses solely on THR outcomes in a previously infected native hip. This study aims to be the first systematic review that examines clinical outcomes of THR, specifically in septic arthritis of the native hip joint in the adult population. Methodology: This systematic review will be conducted in accordance with relevant requirements of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement. PubMed, Embase, Cumulative Index to Nursing and Allied Health Literature (CINAHL), SCOPUS, Cochrane Library, grey literature, and bibliographic references will be searched from inception to October 2023. Only case series or cohort studies published within the last 20 years assessing the outcomes of total hip replacement in native hip septic arthritis will be included. Literature retrieval and data extraction will be conducted by three independent reviewers. The overall methodological quality of the included studies will be assessed using the methodological index for non-randomized studies (MINORS) tool. Re-infection rate and various functional outcomes data such as the Harris Hip Score (HHS), Visual Analogue Scale (VAS), Merle D'Aubigne and Postel (MAP), Western Ontario, McMaster Universities Arthritis Index (WOMAC) Short Form 12-Item (SF-12) scores will be collected and analysed. Expected Results: Expected to have 5-10 studies included after removal of duplicates and implementation of inclusion and exclusion criteria. Compiled results of re-infection rates and outcomes of THR in native septic arthritis of the hip will be reported and analysed.
RNA isolation v1
Authors: Kidtiwong Angkana
Published: October 2024

RNA isolation for sample stored in TRIzol reagent
Crystallisation of Enterovirus coxsackievirus A16 2A protease v1
Authors: Lithgo ryan , Marples Peter , Koekemoer Lizbé , Fearon Daren
Published: October 2024

Picornaviridae coxsackievirus A16 is the causative agent of paediatric hand-foot-and-mouth disease, and a target for pandemic preparedness due to the risk of higher order complications in a large-scale outbreak. The 2A protease of the virus is responsible for self-cleavage from the poly protein, allowing for correct folding and assembly of capsid proteins in the final stages of viral replication. Inhibition deranges capsid folding and assembly, preventing formation of mature virions in host cells and making the protease a valuable target for antiviral activity. This protocol was used to grow coxsackievirus A16 crystals that were applied high-throughput crystallographic fragment screening on the target.
Pro- and Contra-Coalition: Governing the Rise and Fall of Creative Industrial Parks in China
Authors: Chen Xueying , Fan Li , Cao Zhikui
Published: October 2024

A great number of creative industrial parks (CIPs) have emerged in the past two decades in China as a critical and popular approach to the adaptive reuse of abandoned industrial land in cities. However, a few vibrant CIPs have been closed in the past few years, and the sites are set to be demolished and redeveloped in a property-led manner, suggesting the fragility of CIPs as a land reuse approach. This article aims to elaborate on the institutional rationale behind such a phenomenon. Cases in Shanghai and Guangzhou are examined and presented. The key arguments include: (a) in the industrial land redevelopment process, public and private actors flexibly establish pro-coalitions and contra-coalitions to foster and close CIPs, with strategies to overcome institutional obstacles and to implement land redevelopment-pursued regulatory plans, respectively; (b) key actors forming the two coalitions overlap, such as the local government and the state-owned enterprise land occupiers, and their positions shift subject to specific circumstances; and (c) the finding of the two coalitions echoes the existing argument that there are forces beyond the growth machine driving China’s urban development and provides further insight into the explicit framework of the dual forces underneath.
A few sketches about #CONNEXIONS24 (or welcome to #CONNEXIONS24)
Authors:   University of Texas at Austin, Austin, USA, Klynina Tetiana
Published: October 2024

March 18-20, 2024, The University of Texas at Austin, USA, Texas, hosted the annual #Connexions conference.
Liquid biopsy of gliomas with detection of extracellular tumor nucleic acids
Authors: Rakhmatullin Tagir I. , Jain Mark , Samokhodskaya Larisa M. , Zuev Andrey A.
Published: October 2024

Gliomas are the reason of fatal outcomes in an overwhelming number of patients with oncology diseases located in the central nervous system. The diagnostics of such neoplasms requires using stereotaxic biopsy, which cannot be performed in a certain percentage of the patients. Besides, this disease is characterized by high recurrence rates, despite the advances in developing resection and chemotherapy — based technologies. The early detection of oncological diseases located in the central nervous system and the differential diagnostics of tumor pseudo progression, not affecting the survival of the patient, represents a challenge for modern Medicine. Liquid biopsy is a minimally invasive diagnostic method based on the analysis of tumor derivatives (such as extracellular tumor DNA and RNA), contained within the biological fluids of the organism. For the purpose of defining the presence of the tumor component, the tests are used to detect the so-called hot-spot mutations and the patterns of epigenetic regulation, found in specific types of tumors. The technology can be used for detecting tumor recurrences and for the differential diagnostics of space-occupying mass lesions in patients, in which stereotaxic biopsy is contraindicated. The review contains a discussion on modern advances of fluid biopsy based on the analysis of the extracellular tumor DNA and RNA levels in blood plasma and in the cerebrospinal fluid of glioma patients.
The influence of phytoncidal properties of indoor plants on the air microflora of preschool educational organizations
Authors: Chuenko Natalya F. , Novikova Irina I.
Published: October 2024

BACKGROUND: The quality of indoor air is an important factor affecting health.
AIM: To study the effect of phytoncidal properties of indoor plants on closed space under normal operating conditions of preschool educational institutions.
MATERIAL AND METHODS: The dynamics of the microorganisms’ total number in the air of group rooms of preschool educational institutions was assessed according to current guidelines. The rooms were identical in area. The radius of phytoncidal action of indoor plants was determined. Air samples were taken after a week of exposure at different distances from a group of these plants in the breathing zone of children using an aspiration method with a sampling device. Statistical processing was carried out using the Statistica 10.0 and Microsoft Excel packages, ANOVA analysis of variance was applied.
RESULTS: Plant species with phytoncidal activity were selected and designated (Chlorophytum comosum, Aspidistra elatior, Begonia ricinifolia, Hibiscus rosa-sinensis, Kalanchoe blossfeldiana, Plectranthus scutellarioides, Murraya exotica, Nephrolepis, Sansevieria trifasciata, Cyperus alternifolius). The total number of microorganisms in the air of group rooms before and after the installation of phytoncidal plants was compared (1201 and 584 CFU/m3). The maximum radius of plant placement at which bacterial contamination of the air decreased was determined. It was found that within a radius of 5 m from the placement of plants, the number of microorganisms was in the range of 380–481 CFU/m3, more than 5 m — 728–1101 CFU/m3.
CONCLUSION: The use of indoor plants with phytoncidal activity in closed spaces of organized children's groups can serve as an additional way to improve the quality of the air environment.
Mechanisms of functional asymmetry of the face formation in patients with dysfunctional condition of temporomandibular joint
Authors: Astashina N. B. , Martyusheva M. V. , Shchekolova N. B. , Kadyrova E. V.
Published: October 2024

Objective. To give a detailed description of clinical manifestations, diagnosis and treatment of functional asymmetry of the face in patients with dysfunctional condition of temporomandibular joint (TMJ).
Materials and methods. A complete examination of 34 (25 %) patients with symptomatic facial asymmetry of the 3rd type according to H.S. Hwang classification was carried out. The group consisted of 5 males (14,71 %) and 29 females (85,29 %). Screening protocol included standard dental care, cone beam computer tomography of both jaws and TMJ, MRI of TMJ with functional load.
Results. 24 patients (70.59 %) completed complex dental treatment; 10 (29.41 %) people stopped treatment for various reasons and were excluded from further study. Complete restoration of facial symmetry was achieved in 21 people (87.5 %), partial restoration in 3 (12.5 %) patients. The height of the lower facial part and the synchrony of occlusal contacts were restored in all patients. Noise in the joint area persisted in 3 (8.8 %) cases, which is associated with arthrosis in the articular heads. In patients with unreducible dislocations, the intensity of the clicks decreased, and there was no pain at the end of treatment. It should be noted that all patients of this group refused subsequent surgical treatment.
Conclusion. Functional asymmetry of the face results from multifactorial impact on the human organism and is multimorbid by nature. This condition is accompanied by complicated dental pathology, such as increased hard tooth tissues attrition, functional overload with traumatic nodes formation, disturbance of muscles and TMJ functions. It requires following diagnostic and treatment algorithm under the supervision of internal medicine specialists to correct sleep, postural stability, impaired psychoneurological status.
Correlation between dental symptoms and functional and clinical manifestations of Crohn's disease and ulcerative colitis
Authors: Yunusova R. D. , Usmanova I. N. , Lakman I. A. , Ishmukhametova A. N. , Akopyan A. P. , Gaisina E. A.
Published: October 2024

Objective. To analyze the correlation between dental symptoms and clinical and functional manifestations of Crohn's disease (CD) and ulcerative colitis (UC).
Materials and methods. A prospective, observational, longitudinal clinical study of 70 patients with verified inflammatory bowel diseases, i.e. Crohn's disease and ulcerative colitis, has been performed. For an in-depth assessment of the oral mucosa (OM) and red lip border (RLB) condition in patients with these systemic diseases, a complete dental examination has been carried out. The validated questionnaire "7´7" was used to objectify the symptoms of functional gastric dyspepsia.
Results. In patients with the main clinical manifestations of the gastrointestinal tract impairments in CD and UC, extraintestinal dental manifestations in the form of meteorological cheilitis (16 and 9, respectively; p = 0.081), glossitis (15 and 11, respectively; p = 0.323), onset of recurrent aphthous stomatitis (17 and 11; p = 0.144), chronic mechanical trauma of oral mucosa (14 and 11; p = 0.455), and the presence of scalloped tongue (28 and 21, p = 0.068) were diagnosed. At the same time, the incidence of associated pathologies of OM and RLB was significantly higher in patients with CD (p0.05) than in patients with UC. Clinical examination of patients revealed predominance of flatulence symptoms in patients with CD and UC in 74.3 and 77.1 % of cases, respectively (р = 0.771). Patients with CD prevailed in the number of dyspeptic disorders and their variability but statistically significant differences were determined only for the symptom 'abdominal pain decreasing after bowel emptying'. The correlation between the frequency of dyspeptic disorders in patients and characteristic changes in the clinical state of RLB and OM was revealed. For the CD and UC groups Chuprov conjugacy coefficients were statistically significant (ChC=0.36, ChC=0.28 respectively). In patients with CD clinically apparent changes in the RLB and OM associated with various dyspeptic disorders were manifested more often than in patients with UC.
Conclusion. The conducted study has shown that in patients with CD and UC there is a correlation between the frequency and severity of the main functional and clinical symptoms/syndromes (in the form of edema, hyperemia, pitting edema of the ОМ (in fact) and the RLB) and dyspeptic disorders, this correlation being stronger in Crohn's disease (p = 0.031 vs p = 0.046).
A Study on the Effect of Service Quality of Chinese Courier on Customer Satisfaction and Continuous Use Intention
Authors:   The Korean Logistics Research Association, Shi Xiao-Mei , Ahn Young-Hyo
Published: October 2024

As an important part of the postal industry after the reform and opening up, Chinese courier services have made rapid development. However, there are also problems with the development of Chinese courier companies, such as uneven service quality and difficulty in protecting the rights and interests of users. With the increasingly explosive development of e-commerce such as C2C, problems are increasing along with the rapid development of the courier industry. Whether it is the final stage of online marketing and distribution or the service industry, the overall service quality of the courier industry has declined. For example, consumer complaints have increased and netizens have complained. As consumers’ rights protection consciousness is strengthened, one of the ways to increase customer satisfaction is to improve the quality of service of the company and increase the customer’s intention to continue using it.
A Study on the Effect of Big Data Analysis Capabilities on the Supply Chain Resilience and Performance of Exporting Manufacturing SMEs - Focused on the Machinery and Equipment Industry
Authors:   The Korean Logistics Research Association, Kim Chang-Bong , Han Ye-Eun
Published: October 2024

As the economic environment of the global market is rapidly changing, uncertainty is increasing, and technological innovation, as well as financial and human resources, are becoming important factors. In particular, small and medium-sized export manufacturing companies are building global supply chains to improve their competitive advantage, and big data analytics capabilities to collect and analyze manufacturing and import/export information have been raised as a way to solve these risks. Therefore, this study analyzed the influence of big data analytics capabilities on supply chain performance through logistics flexibility and supply chain resilience in the supply chain formation of small and medium-sized export manufacturing firms. The survey was distributed to small and medium-sized export manufacturing companies from January 3, 2024, to March 31, 2024, through face-to-face, email, mail, and fax, focusing on the list of member companies provided by the Korea International Trade Association, the Ministry of SMEs and Startups, the Smart Manufacturing Innovation Association, and the SME Technology Information Promotion Agency. More than 2,000 copies were distributed and 215 copies (21.5%) were collected, and 203 copies of the questionnaire were constructed after removing 12 non-response questionnaires. Based on the collected questionnaires, the analysis was conducted using SPSS Ver. 28.0 and the extension program Process Macro Ver. 4.2.
The results of the empirical analysis of this study are as follows. First, big data analytics capabilities have a positive impact on supply chain performance. Second. big data analytics capabilities have a positive effect on supply chain performance through the mediation of logistics flexibility. Third, big data analytics capabilities have a positive effect on supply chain performance through the mediation of supply chain resilience. Fourth, big data analytics capabilities have a positive effect on supply chain performance through the dual media.
The application of neural networks in the problem of radio monitoring with the use of a two-coordinate radio direction finder and the estimation of their efficiency
Authors: Fesenko M.V. , Nikolenko B.B. , Kurbanaliev V.K.
Published: October 2024

Problem statement. Measuring bases of two-coordinate phase direction finders (PDF), as a rule, are located along the same line, while bearing occurs in two planes independently. The procedure for determining the bearing in this case consists in restoring the true wave front and is quite computationally expensive. The study of PDF using a neural network with simultaneous use of information from all possible combinations of measurement bases is of particular interest from the point of view of evaluating the possibility of increasing the probability of correctly eliminating the ambiguity of bearing and increasing the accuracy of bearing, reducing computational costs and reducing the time to determine the bearing. Goal. Evaluation of the effectiveness of the use of artificial neural networks (NN) for direction finding of radio emission sources (RES) in solving radio monitoring problems using two-coordinate PDF, evaluation of the possibility of increasing the probability of correct elimination of ambiguity of bearing and increasing the accuracy of bearing when using all measuring bases of PDF. Results. A model of two-coordinate PDF based on NN has been developed, which makes it possible to evaluate the effectiveness of RES bearing in two planes with variations in model parameters and initial data. The obtained modeling results allow us to conclude that it is possible to create a two-coordinate PDF based on NN. The evaluation of the effectiveness of bearing shows that PDF based on NN has a commensurate accuracy of bearing and a high probability of eliminating ambiguity compared with PDF using classical methods and is somewhat inferior to them at high values of the phase measurement error in the receiving channels. Practical significance. The use of artificial neural networks (NN) for direction finding of radio emission sources (RES) in solving radio monitoring problems and further research on their development will improve the accuracy and reliability of measurements while reducing computational costs.
Active interference stations based on radiophoton technology
Authors: Bokhovkin D.V. , Korobkov Yu.Yu. , Yangovatova O.A.
Published: October 2024

Problem statement. A modern active interference station (SAP) is built on the basis of digital radio frequency memory (RFR). The CRCP technology allows storing copies of radio frequency signals in digital form, as well as performing their digital processing in order to generate signals with modulation of various types [1]. This technology allows you to create a SAP with the possibility of generating simulated interference (or digital copies of the target). SAP based on this technology has one significant drawback, the band of instant signal processing is limited by the capabilities of an analog-to-digital converter and, in terms of use in electronic warfare equipment, in most cases, does not satisfy the condition - the processing band is equal to the range of input signals [2]. The elimination of this disadvantage is possible in several ways, by increasing the number of channels in proportion to the input signal band to the instantaneous RFP band, by expanding the signal processing band using processing in Nyquist zones. Both ways are not enough effect
Fluctuating simulator of an all-angle target in the aerospace information space
Authors: Haralgin S.V. , Hlopov B.V. , Kolesnikov N.P. , Azizov A.G.
Published: October 2024

Formulation of the problem.The creation of concealed RES with reduced radar signature under conditions of radio-electronic suppression is characterized by a densely saturated signal environment, when a large number of active jammer radars are simultaneously emitting in the information space. Therefore, the relevant task is to determine a model of the information synthesized process of interaction with protected electronic devices by fluctuating masking interference emissions of EMF. Goal. Assess the impact of all-perspective target fluctuating camouflage in aerospace information space by sounding with its radioengineering signals the electromagnetic countermeasures of active jammers signals by redirected annihilated interference under natural operating conditions in air (space) space reverberation (interference noise) interference, reflected from simulator surface space debris, swarm (low flying targets) of unmanned aerial vehicles (UAVs). Results.The influence of fluctuating simulator by annihilated reverberation (interference noise) of reflected radio interference from the space debris to camouflage an all-angle target has been studied in the aerospace information space. Practical significance. The considered mathematical model using a fluctuating simulator of an all-angle target in the aerospace information space of annihilated, reverberation (interference noise) reflected radio interference from the space debris, paralyze work of active jammer and electronic warfare satellite radar.
Application coherent processing of two frequency-spaced radar signals in target monitoring under conditions of relayed interference
Authors: Levin D.V.
Published: October 2024

The use of ground-based radar stations for space surveillance makes it possible to solve problem of detecting new and tracing previously known targets around the clock. The quality of operation ground-based radar station for space surveillance can be significantly reduced when solving problems of radar surveillance in complex phono-target and signal-interference environment. To improve effectiveness of radar surveillance it is advisable to carry out joint use of radar station for space surveillance, in particular as part of multi-position complex with possibility of joint coherent radar signal processing, including signals separated by frequency. It is necessary to develop models for evaluating effectiveness joint use of deferent-band radar stations for space surveillance when solving problems of radar surveillance in complex phono-target and signal-interference environment based on implementation of coherent processing two radar signals. The purpose of study is increase potential accuracy of radar measurements target trajectory parameters in conditions of relayed interference based on implementation of coherent processing two radar signals at ground radar systems for space surveillance. A model of target monitoring has been developed in system of two different-range radar stations for surveying space according to probabilistic indicator and dependences on linkage target trajectories were obtained based on implementation of coherent processing two radar signals in various conditions of signal-interference environment. The result of study can be used in evaluating effectiveness joint use of several radar stations for surveying space as part of multi-position radar systems when observing targets in conditions of noise and relayed interference.
A software package for the investigation of spatio-temporal feature descriptors
Authors: Melnik O.V. , Sablina V.A. , Chernenko A.D.
Published: October 2024

At present time researchers investigate approaches to the automatic facial micro-expression analysis to implement the possibility of the recognition of true human emotions from the image sequence of his face. The modern technologies are based on the use of complex mathematical algorithms with many adjusted parameters; in particular, such algorithms are the algorithms of spatio-temporal feature descriptors. The scientists who are not technical specialists, e.g., psychologists or psychotherapists, when investigating these algorithms may encounter difficulties in writing the program code. Therefore, it became necessary to develop a special software package for the investigation of spatio-temporal feature descriptors. Aim of the work is development of a special software package for studying various spatial and temporal descriptors of facial micromovement features in video images A software package for the investigation of spatio-temporal feature descriptors with a graphical interface is developed. The software package makes it possible to investigate the influence of the selection of the descriptor (LBP-TOP, FHOOF or FHOFO) and its parameters on the micro-facial movement detection accuracy for different input datasets of human face image sequences. The developed software package for the investigation of spatio-temporal feature descriptors can be applied as a software tool for carrying out investigations in the facial micro-expression analysis field.
Development of mobile heart rate monitoring tools using artificial neural networks
Authors: Mikheev A.A. , Chelebaeva Yu.A. , Chelebaev S.V.
Published: October 2024

Currently, there is a great need for mobile monitoring systems used to detect heart rate abnormalities in citizens working or living in hard-to-reach areas. Due to problems with transmitting data from such areas, it is desirable to carry out the entire information processing process at the study site. But, despite the limited hardware costs for the implementation of such systems, it is necessary to ensure high reliability of monitoring results. Purpose is to develop a structural diagram of a mobile heart rate analysis device, select the architecture of the neural network of the conversion and segmentation subsystem of the mobile device, determine the structure of the neural network of the conversion and segmentation subsystem, train the neural network of the conversion and segmentation subsystem, conduct software modeling of the neural network of the conversion and segmentation subsystem, implementation of a neural network conversion and segmentation subsystem based on field programmable gate arrays (FPGAs). A structural diagram of a mobile heart rate analysis device has been developed. The choice of the neural network architecture of the mobile device conversion and segmentation subsystem is justified. The structure of the neural network of the transformation and segmentation subsystem is determined. The neural network of the transformation and segmentation subsystem was trained. A software simulation of the neural network of the transformation and segmentation subsystem was carried out, confirming the high reliability of the proposed neural network structure. A neural network conversion and segmentation subsystem has been implemented in the hardware description language VHDL based on an FPGA. The developed structural diagram of the mobile device and the neural network structure of the conversion and segmentation subsystem can be used when implementing mobile heart rate monitoring means.
An iterative method for synthesizing the antenna array of a logical interference compensator
Authors: Litvinov A.V. , Mishchenko S.E. , Pomysov A.S. , Shatsky V.N.
Published: October 2024

An iterative method has been developed for synthesizing the antenna array of a logical interference compensator according to the requirements for the radiation pattern of the compensation channel. An objective function is proposed that allows reducing the problem of multi-criteria synthesis of a compensation channel to the problem of scalar optimization. The objective function can be divided into three particular objective functions. Optimization of the first private function is carried out during an iterative process. The optimal values of the remaining two partial objective functions correspond to the known solution of the synthesis problem. The results of numerical studies have confirmed the universality of the method with respect to the shape of the antenna array opening boundary. This allows you to search for the optimal set of parameters taking into account one particular objective function. For other particular target functions, the optimal solution is found according to the formulas of matrix synthesis of antennas.
Increasing the probing depth of pulsed GPR by reducing the antenna impedance
Authors: Averin A.A. , Gorkin D.S. , Varenkov V.V. , Sakhterov V.I.
Published: October 2024

At the present time, dipole antennas with resistively loaded vibrators are widely used in pulsed georadar. The main property of such antennas is the emission of an electromagnetic wave into the subsurface medium with rapid attenuation of the ultra-wideband pulse to the end of the vibrators without reflection. When the total resistance of the vibrator decreases below 200 Ohms, parasitic self-oscillations appear in this antenna, limiting the increase in power supplied to the antenna. Development of a dipole antenna for subsurface ground penetrating radar with the ability to reduce the antenna impedance below 200 Ohms to increase the radiated power and increase the depth of ground penetrating radar. The design of a dipole antenna with several resistively loaded vibrators connected in parallel is proposed. The total resistance of a single vibrator is selected based on the stability requirements to prevent parasitic self-oscillations, but the impedance of the dipole antenna decreases in proportion to the number of connected vibrators. A dipole antenna with five dipoles connected and arranged parallel to each other has a gain 10 dB higher compared to a dipole with a single resistively loaded dipole. Compared to a plate antenna 3 meters long and 25 cm wide, a five-vibrator dipole antenna of the same length has a gain of 3.3 dB higher. Another advantage of the proposed antenna is its higher resolution. At the same time, insulated vibrators made of flexible conductors allow twisting to reduce the overall diameter of the dipole antenna, which allows its use in difficult engineering and geological conditions. Experiments with three-meter dipole antennas showed an increase in sounding depth in the Moscow region from 14 to 20 meters.
Robustness of classifier systems using the optimal voting rule and neural network
Authors: Zhironkin S.B. , Kotenko Yu.N. , Chervakov V.O. , Prokhorenko V.V.
Published: October 2024

In connection with the development of artificial neural network (ANN) technologies, it is of interest to compare the robustness of classifier systems using the optimal voting rule and ANN. Robust algorithms are required to have high (though not the highest) efficiency in the case of planned situations, and acceptable efficiency in case of predetermined deviations from the plan (model). The robustness of the optimal voting rule and the neural network to the inaccuracy of computing the posteriori probabilities of partial solutions of the combined classifiers was investigated. It was found that in calculating the posterior probabilities with the error the neural network has provided a better performance than the optimal voting rule, showing the property robustness to the inaccuracy of input data. The use of classifiers utilizing ANN allows to increase robustness of algorithms in the signal receivers.