bluuebunny/crossref_metadata_2025 huggingface dataset:
Microplastic Extraction from Agricultural Soils Using Canola Oil and Unsaturated Sodium Chloride Solution and Evaluation by Incineration Method
Authors: Kononov Andrei , Hishida Motoya , Suzuki Kazuki , Harada Naoki
Published: June 2022

Environmental pollution by microplastics (MPs) has become a global problem, but little is known about MPs in soils. This is because MP extraction methods from soils have not yet been standardized. In this study, we tried to establish a simple and economical method to extract soil MPs using the buoyancy of canola oil and the density separation process using sodium chloride (NaCl). In addition, the incineration method was adapted to evaluate the effectiveness of extraction methods precisely. First, the ability and suitability of seven different oils to extract MP from soil were investigated and canola oil was selected. Then, the spiking and recovery test was performed with canola oil and NaCl solution for low-density polyethylene (LDPE), polypropylene (PP), and polyvinylchloride (PVC) as follows: (1) soil and MP mixtures were prepared, (2) 5 g L−1 NaCl and canola oil were added and shaken thoroughly, (3) the oil phase containing MPs were separated after sedimentation, (4) the extracted MPs were rinsed with 99.5% ethanol, and (5) the organic adherents to the extracted MPs were digested with hydrogen peroxide. After drying and incineration, the substantial recovery rates were calculated. In the spiking and recovery test for MP particles (<1 mm) from five typical Japanese agricultural soils, the recoveries of LDPE, PP, and PVC were 95.2–98.3%, 95.2–98.7%, and 76.0–80.5%, respectively, higher than those obtained by the density separation using saturated NaCl solution. In conclusion, the method is effective for extracting MPs, especially LDPE and PP, from soils and is less sensitive to soil type, texture, and physicochemical properties.
Online Learning Self-Efficacy as a Mediator between the Instructional Interactions and Achievement Emotions of Rural Students in Elite Universities
Authors: Zeng Li-Hong , Hao Yungwei , Tai Kai-Hsin
Published: June 2022

Previous research has shown that social capital (teachers’ and peers’ interaction) is a challenge for rural students in China’s elite universities due to underlying issues of online learning self-efficacy (OLSE) and the quality of interaction. To understand how interaction quality is influenced, the present study drew on the achievement emotion theory to explore the mediating role of OLSE between social interactions (teacher–student, student–student) and achievement emotions (enjoyment, hopelessness, shame). Data were collected using an online questionnaire with a sample of rural students studying at elite universities (n = 479) in China. The results analyzed through Structural Equation Modeling confirmed the mediation model in which self-efficacy is a mediator in the relationships between social interactions and three types of achievement emotion as participants learned online during the coronavirus disease 2019 (COVID-19) lockdown.
K-Means Clustering Approach for Intelligent Customer Segmentation Using Customer Purchase Behavior Data
Authors: Tabianan Kayalvily , Velu Shubashini , Ravi Vinayakumar
Published: June 2022

E-commerce system has become more popular and implemented in almost all business areas. E-commerce system is a platform for marketing and promoting the products to customer through online. Customer segmentation is known as a process of dividing the customers into groups which shares similar characteristics. The purpose of customer segmentation is to determine how to deal with customers in each category in order to increase the profit of each customer to the business. Segmenting the customers assist business to identify their profitable customer to satisfy their needs by optimizing the services and products. Therefore, customer segmentation helps E-commerce system to promote the right product to the right customer with the intention to increase profits. There are few types of customer segmentation factors which are demographic psychographic, behavioral, and geographic. In this study, customer behavioral factor has been focused. Therefore users will be analyzed using clustering algorithm in determining the purchase behavior of E-commerce system. The aim of clustering is to optimize the experimental similarity within the cluster and to maximize the dissimilarity in between clusters. In this study there are relationship between three clusters: event type, products, and categories. In this research, the proposed approach analyzed the groups that share similar criteria to help vendors to identify and focus on the high profitable segment to the least profitable segment. This type of analysis can play important role in improving the business. Grouping their customer according to their similar behavioral factor to sustain their customer for long-term and increase their business profit. It also enables high exposure of the e-offer to gain attention of potential customers. In order to process the collected data and segment the customers, an learning algorithm is used which is known as K-Means clustering. K-Means clustering is implemented to solve the clustering problems.
Type II Half-Logistic Odd Fréchet Class of Distributions: Statistical Theory and Applications
Authors: Alyami Salem A. , Babu Moolath Girish , Elbatal Ibrahim , Alotaibi Naif , Elgarhy Mohammed
Published: June 2022

A new class of statistical distributions called the Type II half-Logistic odd Fréchet-G class is proposed. The new class is a continuation of the unusual Fréchet class. This class is analytically feasible and could be used to evaluate real-world data effectively. The new suggested class of distributions has many new symmetrical and asymmetrical sub-models. We propose new four sub-models from the new class of distributions which are called Type II half-Logistic odd Fréchet exponential distribution, Type II half-Logistic odd Fréchet Rayleigh distribution, Type II half-Logistic odd Fréchet Weibull distribution, and Type II half-Logistic odd Fréchet Lindley distribution. Some statistical features of Type II half-Logistic odd Fréchet-G class such as ordinary moments (ORMs), incomplete moments (INMs), moment generating function (MGEF), residual life (REL), and reversed residual life (RREL) functions, and Rényi entropy (RéE) are derived. Six methods of estimation such as maximum likelihood, least-square, a maximum product of spacing, weighted least square, Cramér-von Mises, and Anderson–Darling are produced to estimate the parameters. To test the six estimation methods’ performance, a simulation study is conducted. Four real-world data sets are utilized to highlight the importance and applicability of the proposed method.
Model-Free Predictive Power Control for PWM Rectifiers under Asymmetrical Grids
Authors: Wang Zeting , Qu Qiyan , Zhang Yongchang , Min Zeyu
Published: June 2022

Conventional model predictive power control (MPPC) features a simple concept and quick dynamic response. However, it relies heavily on the system model and its parameter accuracy. Furthermore, the steady ripples are still high due to the use of one voltage vector during one control period. Recently, model-free predictive current control (MFPCC) has been proposed in the current control of PWM rectifiers. Despite the strong parameter robustness, the principle of MFPCC cannot be directly applied to power control, because the relationship between power and converter voltage is more complex. This paper first proposes a basic model-free predictive power control (MFPPC), which successfully extends the principle of MFPCC to power control. Subsequently, an improved MFPPC is proposed, which uses an extended finite control set of voltage vectors to improve the steady-state performance. Furthermore, by using the online updated ultralocal model of PWM rectifiers, the problem of stagnant power updating in basic MFPPC is solved. The ideal three-phase grid voltages are symmetrical and sinusoidal, but the actual grids are usually unsymmetrical. In this paper, the proposed method is extended to asymmetrical power grids by adding an appropriate compensated power to the original power references. The proposed basic MFPPC and improved MFPPC are compared to conventional MPPC. The presented experimental results confirm the effectiveness of the proposed methods.
Noether and Lie Symmetry for Singular Systems Involving Mixed Derivatives
Authors: Song Chuan-Jing
Published: June 2022

Singular systems play an important role in many fields, and some new fractional operators, which are general, have been proposed recently. Therefore, singular systems on the basis of the mixed derivatives including the integer order derivative and the generalized fractional operators are studied. Firstly, Lagrange equations within mixed derivatives are established, and the primary constraints are presented for the singular systems. Then the constrained Hamilton equations are constructed by introducing the Lagrange multipliers. Thirdly, Noether symmetry, Lie symmetry and the corresponding conserved quantities for the constrained Hamiltonian systems are investigated. And finally, an example is given to illustrate the methods and results.
Dioxin Congener Patterns in Breast Milk Samples from Areas Sprayed with Herbicide during the Vietnam War 40 Years after the War Ended
Authors: Nishijo Muneko , Vu Hoa Thi , Pham-The Tai , Pham Thao Ngoc , Tran Nghi Ngoc , Nakagawa Hideaki , Nishijo Hisao
Published: June 2022

Large amounts of herbicides containing polychlorinated dibenzo-p-dioxins and dibenzo-furans (PCDD/Fs) were sprayed in South Vietnam during the Vietnam War. Levels of PCDD/Fs in the environment of South Vietnam remained high even 40 years later. A total of 861 breast milk samples (597 from three areas sprayed with herbicides, Quang Tri, Da Nang, and Bien Hoa, and 264 from three unsprayed areas in North Vietnam) were collected between 2007 and 2015 and the PCDD/F concentrations in the samples were determined. Levels of TEQ-PCDD/Fs and 17 PCDD/F congeners were higher in the sprayed area samples than the unsprayed area samples. We found particular PCDD/F congener patterns for different areas. High tetrachlorodibenzo-p-dioxin (TCDD) concentrations were found in Bien Hoa, high TCDD and 1,2,3,6,7,8-hexadibenzo-p-dioxin concentrations were found in Da Nang, and high 1,2,3,4,6,7,8-heptadibenzo-p-dioxin concentrations were found in Quan Tri. High 1,2,3,4,7,8-hexadibenzofuran and 1,2,3,4,6,7,8-heptadibenzofuran concentrations were also found in Da Nang and Quang Tri. However, breast feeding may have caused associations between the TCDD and polychlorinated dibenzofuran congener concentrations. Advanced statistical analysis will need to be performed in future to assess the characteristic PCDD/F congener profiles in breast milk samples from areas of Vietnam previously sprayed with herbicides.
Travel-Related Monkeypox Outbreaks in the Era of COVID-19 Pandemic: Are We Prepared?
Authors: Adegboye Oyelola A. , Eugenia Castellanos Maria , Alele Faith O. , Pak Anton , Ezechukwu Henry C. , Hou Kay , Emeto Theophilus I.
Published: June 2022

Several neglected infectious pathogens, such as the monkeypox virus (MPXV), have re-emerged in the last few decades, becoming a global health burden. Despite the incipient vaccine against MPXV infection, the global incidence of travel-related outbreaks continues to rise. About 472 confirmed cases have been reported in 27 countries as of 31 May 2022, the largest recorded number of cases outside Africa since the disease was discovered in the early 1970s.
The In Vitro Replication, Spread, and Oncolytic Potential of Finnish Circulating Strains of Herpes Simplex Virus Type 1
Authors: Kalke Kiira , Orpana Julius , Lasanen Tuomas , Esparta Olaya , Lund Liisa M. , Frejborg Fanny , Vuorinen Tytti , Paavilainen Henrik , Hukkanen Veijo
Published: June 2022

Herpes simplex virus type 1 (HSV-1) is the only FDA- and EMA- approved oncolytic virus, and accordingly, many potential oncolytic HSVs (oHSV) are in clinical development. The utilized oHSV parental strains are, however, mostly based on laboratory reference strains, which may possess a compromised cytolytic capacity in contrast to circulating strains of HSV-1. Here, we assess the phenotype of thirty-six circulating HSV-1 strains from Finland to uncover their potential as oHSV backbones. First, we determined their capacity for cell-to-cell versus extracellular spread, to find strains with replication profiles favorable for each application. Second, to unfold the differences, we studied the genetic diversity of two relevant viral glycoproteins (gB/UL27, gI/US7). Third, we examined the oncolytic potential of the strains in cells representing glioma, lymphoma, and colorectal adenocarcinoma. Our results suggest that the phenotype of a circulating isolate, including the oncolytic potential, is highly related to the host cell type. Nevertheless, we identified isolates with increased oncolytic potential in comparison with the reference viruses across many or all of the studied cancer cell types. Our research emphasizes the need for careful selection of the backbone virus in early vector design, and it highlights the potential of clinical isolates as backbones in oHSV development.
Ocular Complications after COVID-19 Vaccination, Vaccine Adverse Event Reporting System
Authors: Nyankerh Cyril N. A. , Boateng Akosua K. , Appah Mary
Published: June 2022

In December 2020, the U.S. Food and Drug Administration licensed COVID-19 vaccines for emergency use authorization. We investigated the ocular adverse event reports in patients reported to the Vaccine Adverse Event Reporting System (VAERS) following vaccination against COVID-19. We searched the VAERS database for U.S. reports among persons who received COVID-19 vaccines between December 2020 and December 2021. Our goal was to analyze and quantify the ocular adverse events submitted to VAERS to provide clinicians and researchers with a broader view of these ocular side effects. During the analysis period, VAERS received 55,313 adverse event reports and, after data cleaning, 6688 reports met the inclusion criteria. Note that 2229 (33.33%) adverse events were classified as cases of eyelid swelling, ocular hyperemia and conjunctivitis, 1785 (26.69%) as blurred vision and 1322 (19.77%) as visual impairment. Females accounted for 73.8% of adverse event reports and the age group between 40 and 59 years had the most frequent adverse events. A higher proportion of these adverse events reported to VAERS was linked with the Janssen and Moderna COVID-19 vaccines. At the time of vaccination, a high proportion of patients reported conditions like allergies, hypertension, diabetes, thyroid disease, vascular and other autoimmune diseases. A review of these data suggests a possible association between COVID-19 vaccines and ocular adverse events. Physicians are cautioned not only to be aware of this potential problem, but to check any underlying patient conditions, and to carefully document in VAERS within a few weeks of vaccination. Future COVID-19 vaccine safety studies in healthy subjects would help clarify the vaccine’s safety profile.
Comprehensive Evaluation of Water–Energy–Food System Security in the China–Pakistan Economic Corridor
Authors: Cao Mengzhu , Chen Yaning , Duan Weili , Li Yaqi , Qin Jingxiu
Published: June 2022

The safety of the water–energy–food (WEF) system in the China–Pakistan Economic Corridor (CPEC) is critical to the sustainable development of resources, the economy, and society in the region. This paper uses the projection pursuit model of a real-code accelerated genetic algorithm (RAGA-PP) to comprehensively evaluate the WEF system security of the CPEC for the period 2000–2016. The results show that from 2000 to 2016, the projection value of the WEF system was reduced from 2.61 to 0.53, and the overall system security showed a downward trend. Moreover, the CPEC increased by 6.13 × 107 people, resulting in a rapid decrease in per capita water resources and decreased security of the water resources subsystem. With the rising social and economic development in recent years, the per capita energy consumption has likewise risen, leading to a decline in the energy subsystem. At the same time, the per capita grain output in the study area has increased from 185 to 205 kg, and the safety of the food subsystem has been enhanced. However, the significant increase in irrigated areas (from 1.82 × 1010 to 1.93 × 1010 hectares) has further highlighted the contradiction between the supply and demand of surface water resources, and the number of tube wells increased by 7.23 × 105, resulting in the consumption of a large amount of electricity and diesel resources. The water–energy (WE) subsystem also became less safe. With the implementation of water resources management policies over the past few decades, the proportion of agricultural water consumption dropped from 95.06% in 2000 to 93.97% in 2016, and the safety of the water–food (WF) subsystem increased. Unfortunately, agricultural irrigation consumes a large amount of power resources, leading to a reduction in the security of the energy–food (EF) subsystem. The research results from the present study could provide a scientific basis for the coordinated development of WEF systems across the CPEC region.
Water Body Mapping Using Long Time Series Sentinel-1 SAR Data in Poyang Lake
Authors: Shen Guozhuang , Fu Wenxue , Guo Huadong , Liao Jingjuan
Published: June 2022

Mapping water bodies with a high accuracy is necessary for water resource assessment, and mapping them rapidly is necessary for flood monitoring. Poyang Lake is the largest freshwater lake in China, and its wetland is one of the most important in the world. Poyang Lake is affected by floods from the Yangtze River basin every year, and the fluctuation of the water area and water level directly or indirectly affects the ecological environment of Poyang Lake. Synthetic Aperture Radar (SAR) is particularly suitable for large-scale water body mapping, as SAR allows data acquisition regardless of illumination and weather conditions. The two-satellite Sentinel-1 constellation, providing C-Band SAR data, passes over the Poyang Lake about five times a month. With its high temporal-spatial resolution, the Sentinel-1 SAR data can be used to accurately monitor the water body. After acquiring all the Sentinel-1 (1A and 1B) SAR data, to ensure the consistency of data processing, we propose the use of a Python and SeNtinel Application Platform (SNAP)-based engine (SARProcMod) to process the data and construct a Poyang Lake Sentinel-1 SAR dataset with a 10 m resolution. To extract water body information from Sentinel-1 SAR data, we propose an automatic classification engine based on a modified U-Net convolutional neural network (WaterUNet), which classifies all data using artificial sample datasets with a high validation accuracy. The results show that the maximum and minimum water areas in our study area were 2714.08 km2 on 20 July 2020, and 634.44 km2 on 4 January 2020. Compared to the water level data from the Poyang gauging station, the water area was highly correlated with the water level, with the correlation coefficient being up to 0.92 and the R2 from quadratic polynomial fitting up to 0.88; thus, the resulting relationship results can be used to estimate the water area or water level of Poyang Lake. According to the results, we can conclude that Sentinel-1 SAR and WaterUNet are very suitable for water body monitoring as well as emergency flood mapping.
Environmental Determinism vs. Social Dynamics: Prehistorical and Historical Examples
Authors: Sargentis G.-Fivos , Koutsoyiannis Demetris , Angelakis Andreas , Christy John , Tsonis Anastasios A.
Published: June 2022

Environmental determinism is often used to explain past social collapses and to predict the future of modern human societies. We assess the availability of natural resources and the resulting carrying capacity (a basic concept of environmental determinism) through a toy model based on Hurst–Kolmogorov dynamics. We also highlight the role of social cohesion, and we evaluate it from an entropic viewpoint. Furthermore, we make the case that, when it comes to the demise of civilizations, while environmental influences may be in the mix, social dynamics is the main driver behind their decline and eventual collapse. We examine several prehistorical and historical cases of civilization collapse, the most characteristic being that of the Minoan civilization, whose disappearance c. 1100 BC has fostered several causative hypotheses. In general, we note that these hypotheses are based on catastrophic environmental causes, which nevertheless occurred a few hundred years before the collapse of Minoans. Specifically, around 1500 BC, Minoans managed to overpass many environmental adversities. As we have not found justified reasons based on the environmental determinism for when the collapse occurred (around 1100 BC), we hypothesize a possible transformation of the Minoans’ social structure as the cause of the collapse.
OIL – AS A MEANS OF INFLUENCE IN GLOBAL RELATIONS
Authors: V. Morozov Stanislav , Y. Krupskaya Svetlana , S. Orekhova Marina , A. Timoshkova Olga
Published: June 2022

The current study attempts to investigate the details, conditions, and factors of the procedure of utilizing oil as a means, while some powerful politicians and governing circles, especially in Britain, getting the impression of the aim prospects of newly found political figures in Germany amongst the social-nationalists, attempted to apply them in their unattainable aims in regards with the legal characteristics of the Versailles Treaty. To meet that aim, a descriptive-analytical method is utilized and several related documents and sources are taken into account. Based on the results, the factual lack of its oil fields in the Weimar Republic and the oil supplies monopolization concerning executing a “legal mechanism for propelling Germany toward the East” facilitated controlling the Hitler regime’s foreign policy action to a particular point.
ANALYZING THE EFFECT OF INTERFERENCE ON THE UTILIZATION OF FRENCH IN IVORY COAST: SOCIAL AND LINGUISTIC ASPECTS
Authors: Baghana Jerome , A. Glebova Yana , G. Voloshina Tatiana , S. Blazhevich Yuliya , Birova Jana
Published: June 2022

The current study intends to recognize the various sorts of interference in French in Ivory Coast, a West African nation. The current article mainly concentrates on a propound examination and investigation of the linguistic procedure that demonstrates itself in the survey in the impression of Ivorian native tongues and a complicated range of elements and factors. This study focuses on the impacts of grammatical, phonetic, and lexical interference, occurring to various levels on basilect and mesolect French variants and are not in line with the French speech norms in France. The methodology is on the basis of investigating the cases of grammatical, phonetic, and lexical interference, revealing the particular characteristics of Ivorian French. Based on the analysis, lexical interference tends to be clear in alterations in the meaning of the original lexeme and the words borrowing from Ivorian tongues, exposing cultural realities. Based on that, grammatical and phonetic interference is greatly pronounced in the tongue of basilect-dominant talkers.
ON SOME PROBLEMS OF CRIMINAL LEGAL REGULATION OF SMUGGLING OF CULTURAL VALUES
Authors: I.  Dolzhenko N. , A. Zhukova N. , Yu. Sudnikova N. , V. Boev D.
Published: June 2022

The problem of cultural property smuggling is not new to Russia. Every year, a huge amount of cargo is moved across the border of our country, including rare items, publications, etc. Many of these values are an essential component of the cultural wealth of Russia. This study mainly investigates some prevalent issues of criminal legal regulation of smuggling cultural values. To do so, the general scientific research methods within the framework of comparative, logical and statistical analysis are considered. Based on the results obtained, it can be inferred that the criminal law protection of cultural property from illegal transportation across the state border is far from ideal. Hence, it seems crucial to single out the smuggling of cultural property as a separate corpus delicti, including increased liability in the presence of qualifying signs to boost the practice of applying criminal liability for this crime.
TESTING A CONFORMAL COOLING SYSTEM OF A COMPOSITE MOLD
Authors: Lyubimyy N. , Pol'shin A. , Lozovaya Svetlana , Tihonov A. , Gerasimov M. , Lyamina S. , Golubeva N.
Published: June 2022

The article deals with the issue of manufacturing conformal cooling channels to ensure efficient cooling of composite metal-metalpolymer molds. A brief description of both the design of the composite mold and the technology for its production is given. Conformal cooling channels in the composite mold are made in the metal-polymer part, which reduces the distance from the surface of the cooling channel to the cooled forming surface. Experimental studies are given on the example of a composite mold for the "collar" part. Fixing the temperature data of heating and cooling of the metal-polymer molding is carried out using a thermal imager. Evaluation of the results of the study show the efficiency of manufacturing conformal cooling channels directly in the metal-polymer part of the mold. An analysis of the experimental results allows numerically evaluating the cooling efficiency and comparing it with the cooling of a composite mold, in which the cooling channels are made in a metal cage. An assessment of the efficiency of using a composite mold with cooling channels made in the metal-polymer part in the context of saving the main technological time for the production of a batch of parts is given. In conclusion, the difficulties that arose in the process of manufacturing conformal cooling channels in the metal-polymer part and the tasks that require further research in the technology of manufacturing composite molds are described.
RESEARCH OF TIME OF CRITICAL ILLUMINATION TO ASSESS THE DURATION OF DAYTIME ILLUMINATION
Authors: Korkina E. , Shmarov I. , Voytovich E.
Published: June 2022

Natural lighting of buildings has an important morphofunctional value, since the human body is formed in the natural environment. In modern conditions, additional lighting with artificial light sources is used with a lack of natural lighting, this leads to energy costs. The duration of the use of day light depends on many factors, including the light climate of the region. In this paper, authors propose an approach to the preliminary assessment of the time of use of day lighting, taking into account differences in the light climate. Calculations of day illumination on an open horizontal surface are carried out for three cities of the Russian Federation (Sochi, Moscow, St. Petersburg) on the basis of actinometric reference data using the light equivalent of solar radiation for all months of the year by daylight hours. The calculation uses the total solar radiation for clear and cloudy skies with hourly accounting for the probability of sunshine. The value of critical outdoor natural illumination is selected from the specialized literature. Based on the calculated data obtained on the distribution of illumination on a horizontal surface and the value of critical illumination, a table of the end time in the morning and the begin time of intermediate light in the evening for each city and month of the year under consideration is compiled. Therefore, in Sochi, the estimated time of using day light is 4 hours longer than in Moscow, and 7 hours longer than in St. Petersburg. This approach can be used for a preliminary assessment of the duration of the use of day light. Further works of the authors will be devoted to clarifying this approach.
METHODOLOGICAL APPROACHES TO THE DEVELOPMENT OF TOURIST TERRITORIES BASED ON THE PRINCIPLES OF SUSTAINABLE DEVELOPMENT
Authors: Scherbina E. , Nguyen T. C.
Published: June 2022

The paper presents the increasing role of the tourism business in the state's economic development, including the countries and cities of the Asia-Pacific region. These regions have favorable natural conditions for developing coastal tourist resorts. In addition, the article also demonstrates the impact of the pandemic on tourism activities around the world. The factors of the tourism industry's negative impact on the natural complex have been identified. It is especially evident in the coastal zone, experiencing a significant anthropogenic load and must be considered when placing tourism-related objects in the city's planning structure. The basic principles (sufficiency of resources, limited resources, infrastructural integrity and maintenance of the natural system's ecological balance) are formulated, which serve as the foundation for developing a model of the coastal city territory's urban planning balance with a focus on the tourism industry. The proposed model is based on considering the features of the spatial development of coastal city regions, focused on the tourism business. Based on the formulated model, the potential's assessment for urban development of the coastal city Tuy Hoa (Vietnam) is carried out on the basis of the tourism industry. The natural complex's estimates, engineering and transport infrastructures, and the social sphere have been obtained, which allow to estimate the tourist flow of no more than 54,000 tourists, ensuring the sustainable development of the city
Comportamiento informacional en Internet en estudiantes de Ciencias de la Información, Universidad de Holguín
Authors: González Guitián María Virginia , De Zayas Pérez María Rosa , Núñez Grillo María Mercedes , Rodríguez Arias Kadiuska , González Sánchez Ana Leonor
Published: June 2022

Se analiza el comportamiento en la búsqueda de información en internet que asumen estudiantes de la carrera Ciencias de la Información en la Universidad de Holguín. La investigación tiene un enfoque cuantitativo, no experimental, aplicada con alcance descriptivo. Se aplicó una encuesta de nueve preguntas, a una muestra de 84 estudiantes, seleccionados por muestreo no probabilístico aleatorio, para conocer: modalidad de estudio y año; formas mediante las cuales busca y recupera información en internet; objetivos que persigue; fuentes que consulta; formatos e idiomas, buscadores, plataformas, redes sociales y académicas que utiliza. Se observó que el 60,7% siempre buscan solos y el 90% nunca se auxilian de un bibliotecario. El 67,8% siempre buscan en Google Académico, mientras que el 60,7% señalan a Facebook como red social a la que acuden siempre, y en menor medida a WhatsApp. Solo un 42,8% usan las redes sociales académicas y en los tres últimos años de la carrera. Se enfatiza en la necesidad de ofrecer una mejor orientación docente, para que los estudiantes adquieran la ALFIN que les permita aprovechar las ventajas de las redes sociales académicas, así como adecuar los programas de estudio e incluir asignaturas optativas desde los primeros años, que contribuyan a formar las habilidades requeridas.
Pemanfaatan Teknologi Informasi Digital Sebagai Media Optimasi Marketing UMKM Paring Spirulina
Authors: Nastiti Putri , Prima Negara Julius Galih
Published: June 2022

UMKM merupakan sektor usaha yang telah terbukti dalam beberapa tahun krisis, sektor usaha ini telah mampu menggerakkan perekonomian Indonesia untuk tetap bertahan. Namun, UMKM memiliki kelemahan, antara lain kurangnya pendanaan, kurangnya keahlian organisasi, dan kontrol administrasi yang ketat. UMKM memiliki sisi positif yaitu memiliki fleksibilitas yang baik untuk berkembang, yang dapat menjadi peluang. Paring Spirulina merupakan salah satu UMKM di Sleman, D.I. Yogyakarta yang bergerak di bidang budidaya spirulina, pengolahan, dan pemasaran spirulina dalam berbagai macam produk. Paring spirulina telah memenuhi beberapa standar produksi dan memiliki sertifikasi produk. Edukasi tentang produk dan pemasaran merupakan bagian penting dari jaringan bisnis ini. Hingga tahun 2020, Paring Spirulina masih melakukan edukasi dan pemasaran secara konvensional. Jaringan pemasaran konvensional ini menjadi peluang bagi akademisi untuk berkontribusi dalam menghadapi kebutuhan masyarakat. Pemilik bisnis memperkirakan penggunaan teknologi dapat membantu pemilik bisnis mencapai target pemasaran produk dan edukasi yang lebih luas, bahkan menyentuh pasar global. Teknologi informasi berupa situs web menjadi salah satu jawaban atas pengabdian tersebut. Dengan kemampuan teknologi informasi ini diharapkan dapat menjadi cara yang efektif untuk memperluas pasar Paring Spirulina. Telah dilakukan pengembangan website dan pelatihan pemanfaatan teknologi informasi untuk pengembangan pemasaran dan edukasi produk.
Tinjauan Hukum Bagi Penolak Vaksinasi Di Masa Pandemic Covid-19 Terhadap Sanksi Pidana
Authors: Miharja Marjan , Mustajab Wahyu , Akbar Sultan , Setiawan Heri
Published: June 2022

Spread of Covid-19, One of them is to carry out mass vaccinations that are given to the public free of charge. But not a few who refuse to be vaccinated for one reason or another, because of the incitement of others and theories stating that vaccines are dangerous and so on. So everyone who has been designated as the target recipient of the Covid-19 Vaccine but refuses it can be subject to administrative sanctions in accordance with Article 13A of Presidential Regulation Number 14/2021. In addition, vaccine refusals can be subject to criminal sanctions because they are considered to have hindered the handling of Covid-19. The research method used is juridical-normative with a statutory approach, namely Presidential Regulation no. 14 of 2021 concerning Amendments to Presidential Regulation No. 99 of 2020 concerning the Procurement of Vaccines and the Implementation of Vaccinations in the Context of Combating the Covid-19 Pandemic. Another approach used is a conceptual approach by studying the principles, principles, and doctrines of legal science that are used as guidelines to answer and provide legal arguments on related legal issues.
Face Mask Detection Using GoogLeNet CNN-Based SVM Classifiers
Authors: SÜNNETCİ Kubilay Muhammed , AKBEN Selahaddin Batuhan , KARA Mevlüde Merve , ALKAN Ahmet
Published: June 2022

The COVID-19 pandemic that broke out in 2019 has affected the whole world, and in late 2021 the number of cases is still increasing rapidly. In addition, due to this pandemic, all people must follow the mask and cleaning rules. Herein, it is now mandatory to wear a mask in places where millions of people working in many workplaces work. Hence, artificial intelligence-based systems that can detect face masks are becoming very popular today. In this study, a system that can automatically detect whether people are masked or not is proposed. Here, we extract image features from each image using the GoogLeNet architecture. With the help of these image features, we train GoogLeNet based Linear Support Vector Machine (SVM), Quadratic SVM, and Coarse Gaussian SVM classifiers. The results show that the accuracy (%), sensitivity (%), specificity (%) precision (%), F1 score (%), and Matthews Correlation Coefficient (MCC) values of GoogLeNet based Linear SVM is equal to 99.55-99.55-99.55-99.55-99.55-0.9909. When the results of the proposed system are examined, it is seen that it provides an advantage due to its high accuracy. In addition, it is very useful in practice that it can detect masks from any camera. Moreover, since there are classification models that can be created in a shorter time than models that can detect objects, model results can be examined in a shorter time. Therefore, it is seen that the proposed system also provides an advantage in terms of complexity.
Customer Churn Prediction Using Ordinary Artificial Neural Network and Convolutional Neural Network Algorithms: A Comparative Performance Assessment
Authors: SEYMEN Omer Faruk , ÖLMEZ Emre , DOĞAN Onur , ER Orhan , HIZIROĞLU Kadir
Published: June 2022

Churn studies have been used for many years to increase profitability as well as to make customer-company relations sustainable. Ordinary artificial neural network (ANN) and convolution neural network (CNN) are widely used in churn analysis due to their ability to process large amounts of customer data. In this study, an ANN and a CNN model are proposed to predict whether customers in the retail industry will churn in the future. The models we proposed were compared with many machine learning methods that are frequently used in churn prediction studies. The results of the models were compared via accuracy classification tools, which are precision, recall, and AUC. The study results showed that the proposed deep learning-based churn prediction model has a better classification performance. The CNN model produced a 97.62% of accuracy rate which resulted in a better classification and prediction success than other compared models.
Investigation of Stress Occurring in the Wearing Layer in Cases of Embedded Pipes in Different Layers in Asphalt Pavements with Hydronic Heating System
Authors: AKBULUT Hüseyin , ATILGAN GEVREK Lale
Published: June 2022

In order to prevent snow accumulation and ice formation on asphalt concrete roads, the use of a hydronic heating system embedded in the pavement is recommended as an alternative to traditional snow and ice fighting applications. Hydronic heating systems circulate a heated liquid through a pipe network placed under the pavement layer to melt the snow and ice accumulated in the pavement layer, thus preventing the road surface from icing. Various parameters need to be evaluated for a reliable and economically viable hydronic snowmelt system. In this study, the stresses that occur as a result of traffic load in flexible pavements where hydronic heating systems are used and the stresses that occur as a result of traffic load in flexible pavements without hydronic heating system are compared using finite element software. Evaluations were made using five different air temperatures and three different inlet water temperatures. In the study, the stresses occurring in the surface course were investigated when buried pipes are located in the surface course, binder course, asphalt base course and gravel base layer. In addition, the stresses that occur as a result of traffic load in pe-x pipes used in the system were also evaluated.
THE USE OF VISUAL ELECTRONIC CIRCUITS MODELLING AND DESIGNING SOFTWARE FRITZING IN THE EDUCATIONAL PROCESS
Authors: Kryvonos O. , Strutynska O. , Kryvonos M.
Published: June 2022

The article analyzes the current state of the issue of STEM-education in general secondary education of Ukraine, considers the prospects of introducing elements of circuitry within the school course of computer science (CS) as one of the elements of STEM-education, moreover, it reviews the possibility of implementation of the mentioned part as one of the components of professional training of computer science teachers. The analysis of the recent researches and publications on a problem of use of electronic devices in educational process is carried out; the choice of the open software platform Arduino as an auxiliary didactic tool for studying the elements of computer circuitry is substantiated. The most common Arduino model series are described and the examples of their applied use in real-life projects are given. The main technical specs and features of Arduino Uno electronic components are given and explained. The Atmega328P microcontroller, the main computing center of the platform, and its main structural elements are considered in detail; in order to substantiate the offered method, a program suite for creating visual electronic circuits – Fritzing is taken as an example with detailed description of its functions and capabilities. This software product provides the opportunity to visually present the project in different forms (layout, scheme and/or printed circuit board). Any of these views can be used as the main work environment of the project and can be selected at any time.  Fritzing has a library of ready-made projects, which greatly facilitates the learning process. For greater clarity, all the processes of creating a prototype of the electronic game "Hunter" in the Fritzing environment are described and illustrated, as well as a description of the process of creating the game itself. Mentioned software product is used in the process of professional training of future teachers of computer science, mathematics and physics at Zhytomyr Ivan Franko State University. The authors outline prospects of research in this area.
THE USE OF SMART-COMPLEXES IN TRAINING OF FUTURE TOURIST INDUSTRY SPECIALISTS
Authors: Yahupov V. , Maslich S. , Shchypska T.
Published: June 2022

The article analyzes the impact of information technology on the development of education. It is noted that the issues of informatization and digitalization of education are one of the key in the state policy of Ukraine. The main aspects of the transformation of educational services are emphasized, it is noted that education based on SMART-technologies is a global trend in the organization of the educational process. The existence of existing problems in the formation of a modern information and educational environment, the creation of electronic learning tools, the development of SMART-complexes. It is noted that these issues are especially relevant for Vocational Education.

The experience of development and use of SMART-complexes in the training of future specialists in the tourism industry is described. The compliance of the developed SMART-complex with the Standard of Vocational Eeducation 4221.N.79.00-2017 in the profession "Agent for the organization of tourism" was traced. The structure of the SMART-complex is described in detail, the characteristic features of separate modules are allocated and described: "Information data processing in the tourist branch", "Organization of tourist activity", "Organization of transport transportations". It is indicated that these modules, in addition to the block of theoretical material, contain blocks of laboratory (practical) work, blocks of test tasks, glossaries, presentations. The expediency of using the developed SMART-complex during the organization of the educational process by distance learning and in blended learning is proved. The effectiveness of the use of this complex in the educational process of Vinnytsia High Vocational School of Public Service is determined, namely: data on the growth of high and sufficient level of knowledge of students in vocational and theoretical and vocational training, emphasis on high percentage of information, emphasis is placed on the dynamics of motivating students to learn, the development of cognitive interest.
Results of Studying Genotoxic Effects of Dioxins Depending on Polymorphisms of Xenobiotic Detoxification Genes and the Length of Service of Firefighters
Authors: Kriyt VE , Sladkova YN , Melnov SB , Reiniuk VL , Pyatibrat AO
Published: June 2022

Introduction: The work of firefighters is associated with a high risk to health and life. During firefighting, firemen are exposed to a combination of various factors, among which chemical agents rank first. Of all the toxic products of combustion, the most dangerous are genotoxic substances having a high cumulative effect and a very long clearance time, including dioxins and dioxin-like polychlorinated biphenyls generated during low-temperature combustion of organic chlorine compounds. Objective: To study karyopathological manifestations of the genotoxic effects of dioxins in firefighters, de¬pending on the length of service and various polymorphic variants of the xenobiotic detoxification genes. Materials and methods: The cytogenetic status of firefighters was assessed using an extended micronucleus test of buccal epithelium. The study was conducted in 2019–2022 involving 252 firefighters, 86 rescuers and other professionals. The risk of cytogenetic abnormalities in epitheliocytes was assessed using calculation methods and expressed as an index of accumulation of cytogenetic disorders. For each subject, two smears of buccal epithelium were prepared followed by the analysis of two thousand intact cells. Results: We noted an increase in the frequency of karyotype aberrations in buccal epithelial cells of firefighters compared to controls correlating with the length of service and dioxin concentrations in blood lipids. The analysis of the relationship between various polymorphic variants of xenobiotic detoxification genes, dioxins in blood lipids of firefighters, and the index of accumulation of cytogenetic damage showed that individuals with a combination of six genotypes (EPHX1 Tyr/Tyr, CYP1A1 A/A, GSTT1 I/I, GSTM1 I/I, GSTP1 A /A, and GSTP1 C/C) possessed xenobiotic detoxification enzymes with high activity and better resistance to karyotypic changes induced by genotoxicants. Conclusion: The levels of cytogenetic disorders established in the present study give evidence of adverse health effects of occupational exposure to toxic combustion products in firefighters of the State Fire Service of the Russian Ministry of Emergency Situations.
General Medical Conditions and Occupational Diseases in Workers Engaged in Crude Nickel and Copper Production
Authors: Kizeev AN , Syurin SA
Published: June 2022

Introduction: Working conditions in the production of crude nickel and copper pose an increased risk of occupational diseases.
Objective: To collect new data on health disorders in workers engaged in the production of crude nickel and copper in the Arctic.
Materials and methods: We analyzed general medical conditions and occupational diseases in 760 workers engaged in the production of crude nickel and copper in 2008–2020.
Results: Nickel compounds, workplace air concentrations of which exceed the permissible exposure limit by 7.6–157.0 times in various unit process areas, represent the main occupational hazard in converter matte processing. According to the regular
check-up data for 2008, the most prevalent general medical conditions included diseases of the eye (18.4 %), musculoskeletal (14.7 %) and respiratory (12.5 %) systems. Every 10-year increment in the length of service was associated with an increase in
the incidence of diseases of the musculoskeletal, circulatory and endocrine systems (p < 0.001) in the workers. In 2009–2020, 91 occupational diseases were first diagnosed in 50 of 760 employees, among which respiratory diseases prevailed (68.9 %),
and the average annual incidence rate was 0.998 cases per 100 workers. Mill and smelter operators (16.7 % and 13.4 % of all workers, respectively) were at higher risk of developing an occupational disease, and their annual incidence rates were 1.389
and 1.122 cases per 100 workers, respectively. We observed a clear dose-response relationship between the exposure and occupational disease rates in the workers concerned: occupational diseases developed in 32.9 % of workers with very high
occupational exposure and in 17.6 %, 12.0 %, 2.0 %, and 0.3 % of workers exposed to high, medium, moderate, and low levels of airborne nickel compounds.
Conclusion: We have obtained new data on non-occupational and occupational disorders in the crude nickel and copper production workers enabling early and targeted disease prevention.