bluuebunny/crossref_metadata_2025 huggingface dataset:
Fecal prevalence of Campylobacter spp. in house dogs in Lebanon: A pilot study
Authors: Ghssein Ghassan , Barakat Rana , Nehme Nada , Awada Rana , Hassan Hussein F.
Published: November 2023

Background and Aim: Campylobacter spp. are Gram-negative bacilli that are widely recognized as a primary cause of bacterial gastroenteritis worldwide. Campylobacteriosis is the disease caused by this pathogen. Recently, greater attention has been given to the prevalence of campylobacteriosis in different animals, including pets. These animals are considered to be significant reservoirs for this zoonosis. In Lebanon, the occurrence of Campylobacter infection is high. Our first-of-its-kind pilot study in Lebanon aimed to estimate the fecal prevalence of Campylobacter species in house dogs.

Materials and Methods: Thirty-five rectal swabs were collected from male and female house dogs of different ages, both with or without diarrhea. Samples obtained from the dogs were subjected to qualitative microbiological culture testing and molecular diagnosis by polymerase chain reaction assays after bacterial DNA extraction.

Results: Fecal prevalence of Campylobacter spp. in house dogs in this study was 17%. There was a relatively higher prevalence among young females and a significant difference between healthy dogs and those suffering from diarrhea.

Conclusion: Campylobacteriosis was found to be prevalent among house dogs in Lebanon, making them potential carriers of Campylobacter species.

Keywords: Campylobacter, fecal prevalence, house dogs, Lebanon, polymerase chain reaction.
Caprine arthritis and encephalitis virus infection in goats of Bangladesh: Serological detection and its associated risk factors
Authors: Rahma Md. Habibur , Akther Sonia , Alam Md. Shahin , Ali Md. Zulfekar , Ahmed Sadek
Published: November 2023

Background and Aim: Caprine arthritis and encephalitis (CAE) is a multisystemic persistent viral disease of goat that causes significant economic losses to the farmers and livestock sector. However, no information in this country is available regarding CAE virus (CAEV) infection. Therefore, this study aimed to estimate the seroprevalence of CAEV infection among the goat population in the selected goat-prone districts in Bangladesh and to identify the associated risk factors of the disease. Materials and Methods: From July 2021 to June 2022, 446 goat serum samples were randomly collected from the study area. Goat owners were interviewed using a pretested questionnaire to determine the risk factors. A commercial indirect enzyme-linked immunosorbent assay kit was used to screen blood serum for CAEV antibodies. Logistic regression models were used to analyze risk factors and serological data to identify the potential risk factors. Results: Out of 446 serum samples, 19 samples were seropositive against CAEV. The overall seroprevalence was 4.26% (95% confidence interval [CI]: 2.58–6.57). The multivariable logistic regression model identified sex (Female; odds ratio [OR]: 3.98; 95% CI: 1.13–13.95), animal age (12–48 months; OR: 4.93, 95% CI: 0.63–38.13), and biosecurity status (Poor biosecurity; OR: 1.66, 95% CI: 0.46–5.92) as potential risk factors for CAEV seropositivity. Conclusion: This study revealed the serological detection of CAEV in Bangladeshi goats where seroprevalence is found to be relatively low. To eradicate the disease, screening and culling of infected goats from the herd might be implemented. Keywords: Bangladesh, caprine arthritis and encephalitis, enzyme-linked immunosorbent assay, goat, risk factors, seroprevalence.
Assessing Vulnerability of Agriculture to Drought in East Java, Indonesia: Application of GIS and AHP
Authors: Mulyanti Heri , Istadi Istadi , Gernowo Rahmat
Published: November 2023

Drought known as ‘silent killer’—unpredictable slow-moving hazard which cause severe damage to people and environment. Since agriculture is the first and foremost sector affected by drought, the risk of crop failure can be minimized by reducing vulnerability. Climate patterns can be considered as systematic conditions which are capable of assigning sensitivity regions to drought. Here, the study employs Oldeman’s Agro Climatic data as physical vulnerability indicator to assess and monitor the vulnerability of agriculture system to drought in East Java. The study used long-term monthly rainfall observation data to generate climatic map accompanied with socio-economic indicators to assess vulnerability of region to drought. Spatial distribution of vulnerability was mapped using Geographic Information Systems (GIS) combined with Analytic Hierarchy Process (AHP). The results show there are five categories of vulnerability to drought: very high, high, moderate, low, and very low based on standardized index. Madura Island, particularly Bangkalan, Sampang, and Sumenep considered as most vulnerable region to drought. In addition, most regions in the north plain of East Java, including Tuban, Lamongan, and Gresik categorized as highly vulnerable to drought. Factors affecting vulnerability are mostly related to drier climate which affect acreage and availability of irrigation. The socio-economic factors likewise smallholder farmers and poverty contribute to rising vulnerability level. South part of East Java, particularly Tulungagung and Blitar Regency was least vulnerable because of appropriate climate which induced to acreage of irrigated land. The study emphasizes the utilizing of Oldeman climate pattern as primary indicator in determining vulnerable regions. Smallholder farmers and poverty causing vulnerability in agriculture emerged as priority for further study. The results can provide new insights into drought management for most vulnerable regions by considering local climatic characteristics.
A top-secret game: metadiscourse analysis of the contractual discourse of purchasing 100 shares of the Suez Canal Company in 1947
Authors: El-Falaky May S.
Published: November 2023

This paper examines categories and functions of interactive and interactional textual elements used in the contractual discourse of selling/purchasing 100 shares of the Suez Canal Company in 1947. The exchanged documents between the involved parties, the Egyptian (buyer) and the American (seller), are analyzed using Metadiscourse Analysis (MDA) as an approach to analyzing the textual resources used in the selected corpus. Game Theory is also used in conjunction with MDA to allocate the strategic behaviors of the players within the competitive contextual surroundings of the selected discourse. The analysis explains the structural constructions of the correspondences exploring how interactional relations between the participants are linguistically crafted. The analysis of the contract discourse is argued to contribute to econo-linguistics by examining how MDA and Game Theory can be integrated to construe/construct discourses about economics. The article concludes that metadiscourse resources enable the discourse of contracts to maintain a dialogic interactional language between the seller and the buyer. This interaction assimilates a game where the author and the reader (or players) exchange moves strategically to reach the target payoff. Thus, it can be argued that integrating MDA and Game Theory benefits econo-linguistics in highlighting hidden agendas and understanding interactive and interactional meanings in the discourse.
Real-world practice of idiopathic pulmonary fibrosis: Results from a 2000–2016 cohort
Authors: Wang Ying-Tso , Shen Te-Chun , Lin Cheng-Li , Tu Chih-Yen , Hsia Te-Chun , Hsu Wu-Huei
Published: November 2023

The study aimed to investigate comorbidities, major adverse respiratory events, and mortality in patients with idiopathic pulmonary fibrosis (IPF). We established an IPF cohort and a comparative cohort matched for sex, age, and the date of IPF diagnosis. We recorded the most frequent comorbidities, the proportions, and time durations to the episode of major adverse respiratory events and death. Both cohorts were followed up to the end of 2016. We included 921 patients in the IPF cohort and 3,677 individuals in the comparative cohort. Comorbidities associated with IPF included pulmonary hypertension, chronic obstructive pulmonary disease, heart failure, asthma, and gastroesophageal reflux disease. The IPF cohort was more likely to have pneumonia (47.6 vs 12.0%), acute respiratory failure (17.8 vs 4.30%), chronic respiratory failure (4.23 vs 0.63%), and death (36.3 vs 15.0%) than the comparative cohort. The time durations to the first episode of pneumonia, acute respiratory failure, chronic respiratory failure, and death were 2.09 ± 2.98, 3.12 ± 3.62, 3.20 ± 4.03, and 3.27 ± 3.03 years in the IPF cohort. In conclusion, patients with IPF had significant comorbidities, particularly pulmonary and cardiovascular comorbidities. The duration from diagnosis to the major adverse respiratory events or death was short.
Mathematical analysis of an epidemic model with direct and indirect transmission modes and two delays
Authors: Najm Fatiha , Yafia Radouane , Alaoui My Ahmed Aziz , Tridane Abdessamad , Boukrim Lahcen
Published: November 2023

In this article, we consider an epidemiological model in which we take into account the effects of direct and indirect transmissions. The first mode occurs through direct contact between infectious and susceptible individuals, and the second one will take place through the shedding of virus particles by infectious individuals and their acquisition by susceptible ones. We also study the effect of latency period and time needed for a susceptible person to become infected by indirect transmission mode. By considering the direct and indirect basic reproduction numbers, we define the basic reproduction number

R

0

{R}_{0}

of the model, which helps us to analyze the stability of equilibria and bifurcation and determine the most sensitive parameters. In conclusion, some numerical simulations are given to confirm the analytical analysis.
From Abrogation to Dominion: Navigating India’s Neo-Colonial Settler Agenda in Kashmir and Elimination of Kashmiri Identity
Authors: Hussain Mehmood
Published: November 2023

This paper examines the neo-colonial project of Narendra Modi implemented in Kashmir after the revocation of special status on August 5, 2019. The neo-colonial infrastructure supported by the threads of re-classification of legal residents and land designations intends to significantly transform the demography of Muslim majority Kashmir into a Muslim minority, consequently destroying the Muslim identity of the state. The abrogation of Article 370 and enactment of new domicile law has extended the legal and administrative control of New Delhi, making Kashmir indistinguishable from the Indian legal system and leaving no room for the local legislative assembly to make laws beneficial for the state residents. The paper asks how India is implementing the neo-colonial settler agenda in Kashmir. How and to what extent legal and military instruments are employed to disempower Kashmiris from territorial and cultural identity? The paper argues that Prime Minister Narendra Modi is pursuing a neo-colonial settler agenda in Kashmir through ‘destroy and replace,’ which is supported by the neo-liberal agenda, including; new land management policy, new domicile law, spatial planning and development, new settlements of Hindus, authoritative central control, and massive militarization to carry out gross human rights abuses and repression.
Comparative investigations of Ag/H2O nanofluid and Ag-CuO/H2O hybrid nanofluid with Darcy-Forchheimer flow over a curved surface
Authors: Lu Wenjie , Farooq Umar , Imran Muhammad , Chammam Wathek , El Din Sayed M. , Akgül Ali
Published: November 2023

Nanofluid performed well and produced good results in heat transport phenomena, attracting scientists to suspend other combinations of nanoparticles, called “hybrid nanofluid. Hybrid nanofluids are superior than nanofluids due to their thermal capabilities and emerging benefits that contribute to the boost in the rate of heat transmission. Applications for these nanoparticles, including sophisticated lubricants, are increasing in the fields of bioengineering and electricity. The main prospective of this research is to inquire about the water-based dual nature nanofluid stream numerical simulation through the irregular stretched sheet with heat transfer. In this perspective, silver with base fluid water is used as nanoparticles for nanofluid, and for making hybrid nanofluid, copper oxide and silver particles are used with water-based fluid. Modified Fourier and Fick’s model for heat flux utilized the above phenomenon and observed the heat and mass transport. Similarity variables are needed to transform the partial differential equations into associated nonlinear ordinary differential equations, which are then computationally resolved by the technique of bvp4c which is a built-in function in MATLAB mathematical software. Based on the concurrent approximations, reformations are performed to determine the impact of various quantities on flow variables. The predicted outcomes are depicted in velocity, temperature, and concentration profiles through graphical depiction. The factors indicate that the hybrid nanofluid is more powerful in the transfer of heat than a basic nanofluid because of its superior thermal characteristics. The velocity profile decays for the increasing values of Darcy-Forchheimer parameter. The thermal profile increases for the higher magnitude of Darcy-Forchheimer parameter. The velocity distribution profile increases for the higher values of curvature parameter, while the thermal profile decreases. This unique work might benefit nanotechnology and related nanocomponents. This safe size-controlled biosynthesis of Ag and CuO nanoparticles has resulted in a low-cost nanotechnology that may be used in a variety of applications. Biosynthesized Ag and CuO particles have been used successfully in a variety of applications, including biomedical, antibacterial agents, biological, food safety, and biosensing, to mention a few.
Silver, copper, and cobalt trimetallic nanoparticles; synthesis, characterization and its application as adsorbent for acid blue 7 dye
Authors: Alam Sultan , Ullah Shakir , Ilyas Muhammad , Rehman Najeeb Ur , Zahoor Muhammad , Umar Muhammad Naveed , Ullah Riaz , Ali Essam A.
Published: November 2023

The synergistic effects of metal complex nanoparticles in remediation of environment had opened a versatile field of research as providing differential attractive forces for a given pollutant on their surfaces. Herein, trimetallic nanoparticles of silver, copper and cobalt (Ag–Cu–Co TNPs) were prepared via chemical reduction method using sodium borohydride as reductant which were then characterized through SEM, EDX, XRD and FT-IR analytical techniques. As model dye, acid blue 7 was adsorbed on the surface of fabricated particles utilizing batch adsorption approach. The adsorption conditions like temperature, adsorbent dosage, pH, and contact time were optimized to get maximum adsorption of the selected dye which were; 333 K, 0.01 g, pH 6 and 30 min respectively. The adsorption data were analyzed using kinetic and isotherm models, with the linear pseudo 2nd order kinetics and Langmuir models being the most suitable. The maximum adsorption capacity at 333 K was found to be 74.07 mg/g. Thermodynamic variables such as entropy (ΔS°), enthalpy (ΔH°), and Gibbs free energy (ΔG°) changes were calculated to understand the adsorption feasibilities. Results indicated that the adsorption process was endothermic (ΔH° = 6.867 KJ mol−1) and spontaneous ΔG° (J mol−1) −219.2, −702.9 and −1086.6 at 293 K, 313 K and 333 K respectively. The entropy change (ΔS° = 24.185 J mol−1 K−1) suggested an increased disorder at the solid–solution interface during adsorption.
Meso-damage behaviour of cement-stabilised macadam after long-time immersion based on particle flow theory
Authors: Zhao Guofang , Luo Chengcheng , Wu Xiaoyong , Wang Xinqiang , Yan Yongkang , Yan Zhanyou
Published: November 2023

Water can cause a certain degree of damage to cement-stabilised macadam (CSM), and the degree of damage is greater if CSM is immersed in water for a long time. In order to study CSM damage after lengthy water immersion, a discrete-element model of CSM was established. The Weibull distribution function was used to simulate the heterogeneous contacts between particles. The parallel bond model was used to simulate the material constitutive relationship. The microscopic parameters of CSM were obtained by trial-and-error method. The stress–strain curve was obtained from immersion tests. The micromechanical behaviour of the CSM after immersion was analysed. The results showed that the contact area and strength of the CSM immersed for 30 days were, respectively, 31.4% and 46% less than those of the non-immersed macadam. The force chains between particles were evenly distributed. At peak loading, the normal contact force between particles was much larger than the tangential contact force, and the vertical force chain was much larger than the transverse force chain. The distributions of cementation energy, friction energy and impact energy were not uniform in the middle/peak loading stage.
Diversity of Bacterial Gut Microbiome of Oryctes rhinoceros Larvae and Their Potency as Source of Protease and Lipase Enzymes
Authors: Aini Luqman Qurata , Dewi Fibrianti Shinta , Trianti Irisa , Fernando Ito , Setiawan Yogo
Published: November 2023

Oryctes rhinoceros is an important pest of various coconut and palm species. Studies on the bacterial gut microbiome of O. rhinoceros larvae and their potential use as producers of industrial enzymes are still limited. This study aims to examine the diversity and abundance of bacterial microbiome in the gut of O. rhinoceros and their potential to produce protease and lipase. This study consisted of several stages, i.e., collection of O. rhinoceros larvae from coconut plantations; isolation of culturable bacteria from larval gut; protease and lipase enzyme activity assays; and partial characterization of culturable gut bacteria in terms of morphology, physiology, and biochemistry. There were seven bacteria that were isolated from the gut of O. rhinoceros, which were differentiated by their morphotype. The seven bacterial isolates also showed variations in physiological, and biochemical characteristics, and the larval guts were dominated by Gram-positive bacteria. The Shannon diversity index was 1.33, evenness was 0.682, richness was 7, and the abundance of each type of bacteria varied between 2x105 and 9.1x1010. Bacteria UBOG1, UBOG3, and UBOG5 were able to produce protease, but all seven bacteria were unable to produce lipase. Thus, bacterial isolates UBOG1, UBOG3, and UBOG5 are potential to be used in industry.
An In Vitro Pharmacognostical Study on Gluconeogenesis and Glucose
Authors: Deepesh Lall  , Neeraj Sharma  , Ritesh Jain  , Pankaj Masih  , Praveen Sharma
Published: November 2023

Traditional medicine over 60% of the world’s population used for health care name as Mukia maderaspatana (L.) M. Roem. (Cucurbitaceae) (Mukia) is extensively important medicine as an anti-inflammatory plant. It is rich in content of phenolics that exerts various medicinal properties. Mukia extract and its derivatives phenolics such as quercetin and phloroglucinol are investigated for their in vitro anti-inflammatory activity. Materials used was Quercetin, phloroglucinol, and methanol which extract of the dried whole plant (0.55 and 0.6 mg/ml) were studied for the inhibition of gluconeogenesis and glucose Phenolics of Mukia were analyzed by HPLC and UV-spectroscopy. Results obtained were Glucose (1.5 mg/g/h) was synthesized from pyruvate, the synthesis was whole inhibited by insulin (1 U/ml). Quercetin at 0.35 and 0.6 mg/ml caused 60% and 90% inhibition (0.43 mg/g/h and 0.12 mg/g/h glucose). Addition of insulin did not increase inhibition. Phloroglucinol inhibited 100% glucose production with or without insulin. Mukia (0.20 mg/ml) inhibited gluconeogenesis (0.65 mg/g/h) by 40%, and with insulin, inhibition increased to 50% (0.59 mg/g/h). At 0.6 mg/ml, glucose synthesis was stimulated by1.3-fold, but with insulin gets inhibited by 90% (0.12 mg/g/h glucose). Mukia possessed no effect on glucose uptake, in case it potentiated the activity of insulin mediated glucose uptake (153.82 ± 12.30 mg/dl/g/30 min) compared with insulin control (122.41 ± 9.14 mg/dl/g/30 min) (p < 0.02). HPLC analysis revealed the presence of phenolics. Results were concluded scientific rationale for the use of Mukia in medicine as an anti-inflammatory nutraceutical.
Insuring Artificial Stone
Authors: Stover Kyle
Published: November 2023

This paper examines experiments to increase the durability of architecture as a means to manage the risk of catastrophic loss through tangible systems of artificial material and intangible systems of insurance. At the intersection of these dyads is Coade’s Artificial Stone Manufactory conducting experiments in architecture to yield an ornament useful in securing capital from 1769 - 1821. Selling goods from the south bank of the River Thames in London, Coade’s made use of a catalog to mediate the global exchange between the site of production and construction. For architects and builders, these commodities construct a modern architecture relying upon cheapness, mass production, and abstraction. The utility of this artificial stone explicates a relationship between durability and catastrophic failure at work in the manufacture of modern architecture.
The Missing Link
Authors: Jaojoco Patrick
Published: November 2023

For the vast majority of agricultural workers in the tenant peasantry class, the direct relation to a landscape valorized by a plantation economy is simultaneously a constantly mediated, ever-precarious economic relation to global capital. Since 1945, discourses of development have only deepened extractive and deeply unequal modes of governance and sociality in this context and across the Global South*. It is in this context that I aim to assess the politicized technics of precarity, weather prediction, and economics of agriculture in the Philippines under the authoritarian rule of Ferdinand Marcos. In studying the Philippines during its violent neoliberal transformation period, I hope to extract an ideal portrait of the environmental, technological, and economic logics of postcolonial globalization. To do so, I will assess a subtle yet crucial point in the Philippines’ history of science, technology, and the environment: the implementation of a meteorological telecommunications network and Marcos’s reordering of these stations as the Philippine Atmospheric, Geophysical and Astronomical Services Administration, or PAGASA (meaning “hope” in Tagalog). By understanding the several scales of political economy at work in direct relation to such a network, this paper seeks to illuminate the multiple dimensions of social instability rooted in the Philippine government’s neoliberal conflation of environment and economy. The architectures and technologies of network, then, highlight the numerous ways in which weather forecasting, agricultural production, and political control intersect in infrastructural development.
Architectures of Coloniality
Authors: Rovner Melissa
Published: November 2023

The Owens Valley Paiute, traditional caretakers of the “Land of Flowing Water,” face continued threats to their livelihood due to decades of water extraction from the region by the city of Los Angeles. The precarious state of Indigenous lands and peoples across California is entangled with historical processes supported by the Bureau of Indian Affairs (BIA) and the off-reservation boarding school system. During the first half of the twentieth century, Paiute, Mission Indian and other Indigenous youth were sent to the Sherman Institute in Riverside, the last of twenty-five boarding schools to be built and operated by the BIA. Accompanying its Mission Revival style façade and the associated narratives of racial uplift, the school aimed to distance students from tribal affiliations, teaching them Anglo, heteropatriarchal forms of domesticity, and training them to become wage laborers in the farming, construction, and domestic service trades. After graduation, many students were employed by the federal government to convert tribal lands to agricultural plots and private property, while many others found low-wage, unskilled positions in the building and maintenance of Southern California’s expanding metropolis. This paper investigates the role of the Sherman Institute in the exploitation of Indigenous lands and labor for regional development, and therefore, the production of racialized precarity for Indigenous peoples. By engaging with Indigenous epistemologies, the paper works to stretch the limits of history/theory, to expose systems of confinement for their racialized underpinnings, and to introduce more fluid conceptions of land, property, and personhood.
Radio transmitting device of local navigation systems with adaptive adjustment of radio signal spectrum parameters
Authors: Nerovny V.V. , Zhuravlev A.V. , Kiryushkin V.V. , Babusenko S.I. , Krasov E.M.
Published: November 2023

Problem statement. Existing radio transmitting devices use a non-tunable baseband filter focused on achieving a minimum level of out-of-band radio signal radiation, which leads to a decrease in the efficiency of using the energy resource of the radio transmitting device caused by an increase in the peak factor. Purpose. improving the efficiency of using the energy resource of the radio transmitting device is adaptive dynamic control of the parameters of the spectrum of the radiated radio signal of the radio transmitting device, depending on the results of monitoring the electromagnetic environment. Results. The proposed technical solution will make it possible to increase the efficiency of using the energy resource of the radio transmitting device by adaptive dynamic control of the parameters of the spectrum of the emitted signal, depending on the results of monitoring electromagnetic compatibility in the radio frequency bands of out-of-band radiation of the radio transmitting device. Practical significance. The results can be used by specialists in the field of radio communications and radio navigation in the development of radio transmitting devices with a reduced level of out-of-band radiation.
Determination of the coherence interval of radar targets using a multipoint signal reflection model
Authors: Gavrilov K.Yu. , Kudryashova E.V. , Malysheva O.V.
Published: November 2023

The problem of determining the coherence interval of the target (CIT) is considered – the time interval during which the signal reflected from the target can be considered coherent. In this case, the criterion of signal coherence is the condition of limiting the random phase fluctuation of the reflected signal to a value. The basis of the method of determining the CIT is the use of a multipoint model of a target that performs a rectilinear motion at a constant speed. When describing the resulting signal, the complex envelope method is used. It is shown that for an arbitrary number of reflection points, the resulting signal can be represented as a product of two functions. The first function is deterministic and determines the dependence of the signal phase on the speed of movement of the target center. The second function determines the amplitude and phase fluctuations of the reflected signal and, due to the unknown number and location of the reflection points, as well as the angle of observation of the target, can be considered random. In the case of a two-point target model, an approximate ratio for the CIT is obtained, depending on the relative size of the target, its range and speed of movement. It is shown that for typical target sizes and ranges of the order of several tens of kilometers, the errors in calculating the CIT when using the obtained approximate ratio do not exceed 10% of the true value of the CIT. It is also shown that the frequently used approach of calculating the CIT based on the calculation of the backscattering diagram of the target does not take into account the target range and therefore can lead to large errors in calculating the CIT. At the same time, the calculated values of the CIT, depending on the size of the target and its range, may differ from the true values by an order of magnitude or more. When switching to the multipoint model of the target, differences in comparison with the two-point model in the calculation of the CIT are determined and estimates of the most rational number of reflection points are obtained, the choice of which can be limited to five or six points.
Use of artificial neural networks to assess the impact of electromagnetic interference
Authors: Romashchenko M.A. , Vasilchenko D.V. , Beletskaya S.Yu.
Published: November 2023

Statement of a problem. In the process of testing electronic devices for the effects of electromagnetic interference, it is necessary to process large amounts of data. Such data includes information about the operation of the device under the influence of electromagnetic interference (EMI), configuration (EMI), polarization and many other parameters that affect the assessment of the quality of electromagnetic compatibility (EMC). Based on the fact that most modern devices operate at high and ultra-high frequencies, the amount of data coming from them can reach tens of gigabytes. Analytical processing of such data arrays can be difficult, and in some cases impossible at all. An alternative option for processing such arrays is the use of systems based on artificial intelligence and neural networks of various configurations. Purpose. Conducting an effective assessment of the behavior of the device when it is exposed to electromagnetic interference. Results. A method of using an artificial intelligence system for processing experimental data when testing electronic devices for EMF exposure has been developed. Practical importance. The developed method is aimed at improving the efficiency of the hardware and software complex for assessing the effect of electromagnetic interference on electronic means. Improving the quality of data processing will make it possible to more accurately predict the behavior of the device when working in a real operating environment, as well as to point out to the developer potentially problematic places in the design of the electronic means.
Method for determining quality parameters of electronic tools
Authors: Kostyukov A.S.
Published: November 2023

Formulation of the problem. This article proposes a method for determining reliability factors based on statistical algorithms using a sample of initial data. The author proposes to take as a basis the method of presenting a statistical series, which is the most common method for determining the operability of an electronic device currently used in industrial production, and to make a number of changes to it. In particular, it is proposed to include in the calculation such parameters as: distribution range, distribution skewness, kurtosis of a random variable, as well as to determine the probability density with the subsequent construction of a random variable distribution curve, which can be used to estimate the probability of an electronic device failure. Carrying out control calculations showed that the accuracy of determining the reliability parameters increased by 5% in comparison with the reference values. These results confirm the correctness of the proposed method, it is expected that the developed new method for determining reliability will open up new opportunities for testing electronic equipment. Target. It is reasonable to show that the developed new method for determining the reliability of an electronic means allows you to calculate the most accurate reliability indicators that are closest to the reference values. Results. Three types of devices were chosen as test specimens for control tests, namely MOSFET transistors, integrated circuits of the KR series, and microcontrollers of the AtMega family. This choice is due to the desire to work out the methodology on as many different types of devices as possible in order to understand how the reliability indicators will be determined depending on the device under study. Also, for the presented types of devices, it is easy to find design documentation in the public domain and, accordingly, compare the obtained indicators with the reference values. As a result of the research, it was found that the probability of failure of an electronic device is on average 0.05 for a sample of MOSFET transistors, 0.15 for integrated circuits of the KR series, and 0.1 for microcontrollers of the AtMega family. The presented values differ slightly from the reference values, which indicates the high accuracy of the readings developed. Practical significance. According to the results obtained, it can be concluded that the developed method for determining the reliability coefficients is workable and can be used in industrial enterprises for testing electronic equipment.
Implementation of dynamic selective location in new radio communication services of the 5th generation based on the «vehicle connected to everything» technology
Authors: Bobylkin I.S. , Samodurov A.S. , Ivanov A.V. , Kuzyomkin A.A. , Yampolsky D.A.
Published: November 2023

Problem statement. The principle of operation of dynamic selective positioning in fifth generation (5G) networks is especially relevant in the “vehicle connected to everything” (V2X) technology used in the automotive communication system, which includes types of communication that occur between one “vehicle” object and objects such as "infrastructure", "network", "pedestrian" or "device". To achieve high accuracy in V2X services, it is necessary to provide stable and uninterrupted connection, coverage with a minimum number of available communication points and wide bandwidth. Lack of line of sight is one of the major challenges in achieving accurate positioning in many locations, such as urban environments, tunnels, and underground parking lots. Today, the development of potential solutions to provide new users of the V2X service with high positioning accuracy is an urgent task for promising versions of the 5th generation mobile communication technology, which is being formed by the 3rd Generation Partnership Project (3GPP) consortium. Target. Introduce a new selective positioning method based on the dispersion of adjacent signal arrival times for dynamic switching between RAT-dependent methods and GNSS positioning methods. Results. Promising solutions have been explored to provide NR V2X users with long-term and highly accurate positioning. A selective positioning method is shown to dynamically switch between GNSS and DL-TDOA measurements based on the location of V2X users and improve the accuracy of the collected measurements using a MAP-based criterion to evaluate performance gains by combining measurements from different technologies in services. NR V2X. The proposed hybrid methods were evaluated using system-level simulations, the results of which demonstrated that the proposed algorithms can achieve position errors ≤ 3 m with an availability of approximately 76% compared to the 51 and 58% availability obtained using only GNSS measurements. or DL-TDOA, respectively. It is shown that in order to improve the tail of the distribution of user positioning errors by more than 56%, it is necessary to apply the deployment of roadside communication units. Practical significance. The implementation of the selective positioning method based on the dispersion of adjacent times of signal arrivals makes it possible to improve the accuracy of determining the location of a moving object in networks built on the basis of V2X technology. Thus, the developed solution helps to ensure stable data transmission with minimal interference due to dynamic switching between different detection methods.
Reconfigurable low-density decoder for multi-level wireless local area networks
Authors: Khoroshailova M.V. , Sviridova I.V. , Tsipina K.D.
Published: November 2023

Formulation of the problem. With the rapid development of multimedia equipment and the development of technology, ultra-high-quality equipment with a resolution of 3840 ×2160 (4K2K) pixels, such as ultra-high definition television projectors (UHDTV), has been developed. Most devices use high-definition multimedia interface (HDMI) lines as transmission media, which are expensive and have length limitations; therefore, wireless transmission is an ideal solution. Devices for augmented reality (AR) or virtual reality (VR), mirroring mobile device screens, etc. also, as a rule, wireless transmission is used. Thus, wireless data transmission with a frequency of 60 GHz plays an important role in the era of the fifth generation (5G), where special attention is paid to high transmission speed, large data volume and low latency. Purpose. Development of a reconfigurable low-density parity decoder architecture with suitable hardware for IEEE 802.15.3c, 802.11g and 802.11ay standards. Practical significance. The reconfigurable Low-Density Parity Decoder (LDPC) is designed with suitable hardware for use in three 60 GHz wireless transmission standards: IEEE 802.15.3c, 802.11g and 802.11ay. This architecture flexibly supports 12 types of parity check matrices. The switching network uses an architecture that allows universal switching between different inputs and provides low hardware complexity. The control node block uses a switchable reconfigurable 8/16/32 structure to match different string weights at different encoding rates and uses a minimum sum algorithm to simplify the procedure for finding the minimum value.
VHF crystal oscillator noise Part 2. Experimental and calculated data
Authors: Silaev E.А.
Published: November 2023

Problem statement. The noise of radar local oscillator reference oscillation sources often prevails among the noise of the local oscillator signals. At long ranges, this leads to significant distortion of the results of processing weak reflected signals in radars. One of the ways to reduce the noise of the local oscillator signals is the use of VHF crystal oscillators with a low noise level. Goal. To obtain equations for the power spectral density of phase noise, as well as for random deviations of the oscillation phase of a model of a VHF crystal oscillator. Results. Equations for the power spectral density of phase noise, as well as for random deviations of the oscillation phase of a model of a VHF crystal oscillator are obtained. Practical significance. These theoretical and practical results obtained allow a more selective approach to the selection of parameters of high-frequency crystal oscillators for use as sources of local oscillator oscillations.
Passive damping of the beam elements of antenna systems
Authors: Kriven G.I.
Published: November 2023

Beams are one of the most common elements of antennas - they can be used both as elements for receiving and transmitting radio signals, and as design solutions for various purposes. The paper considers a hinged-supported composite beam consisting of symmetrical layers reinforced with fiber with a viscoelastic coating. The representative element forming the beam layer consists of a fiber, a viscoelastic layer and a matrix. To assess the effect of the volumetric content of reinforcing fiber with a viscoelastic coating on the loss coefficient of a layered composite beam, the viscoelastic analogy method is used, within which the properties of a viscoelastic material are specified by complex quantities. And to evaluate the effect of the volumetric content of reinforcing fiber with a viscoelastic coating on the loss modulus of the composite material, the three-phase method extended to a multiphase medium and the viscoelastic analogy method are used. A study is also carried out to study the influence of the ratio of the real parameter of the loss modulus of the viscoelastic layer to the shear modulus of the reinforcing fiber on the effective transverse loss modulus of the composite material and on the loss coefficient of the laminated composite beam. Numerical values of the effective transverse loss moduli for the composite material under study and the loss coefficients of a simply supported beam are given depending on the thickness of the viscoelastic layer. For the parameters under study, the nature of the peak values is analyzed and ways of influencing their position and shape are discussed. It is assumed that such beams can find wide application in antenna technology, since they will significantly reduce mechanical resonant vibrations of antenna system structures, while maintaining their rigidity and strength.
PRODUÇÃO DE MILHO CULTIVADO COM APLICAÇÃO DE COMPOSTO DE ESTÁBULO
Authors: FERREIRA ERIC VICTOR DE OLIVEIRA , DE ANDRADE LUIS ARTUR BATISTA , CAMILO JENNIFER ALVES , CARVALHO ELIZETE DOS REIS LIMA , PEREIRA GREICE LEAL , FARIAS MAGDA DO NASCIMENTO , Silva Carine Gregório Machado
Published: November 2023

Os solos do Cerrado naturalmente apresentam alta acidez e baixa disponibilidade de nutrientes, demandando correção e fertilização para obtenção de altas produções. Embora a fertilização mineral promova a melhoria da fertilidade do solo, a fertilização orgânica pode também melhorar as suas propriedades físicas e biológicas. Objetivou-se avaliar os efeitos da substituição da adubação mineral pela adubação orgânica na fertilidade do solo, na nutrição e na produção do milho (Zea mays L.) para silagem. O experimento foi conduzido na fazenda Barreiro Alto (Sete Lagoas- MG) sob delineamento em blocos casualizados, com quatro repetições e nove tratamentos; combinações de adubação mineral (200 a 400 kg ha-1 de 30-0-10) e orgânica (4 a 8 t ha-1 do composto de estábulo) em cobertura, além da testemunha (sem fertilização). Ao final do ciclo, avaliou-se a produção, os atributos da fertilidade do solo, os teores e os acúmulos de nutrientes nas plantas. As variáveis não foram influenciadas significativamente pelas adubações orgânica e mineral. Em média, o milho acumulou na parte aérea; 254, 33, 213, 53, 36 e 19 kg ha-1 de N, P, K, Ca, Mg e S, além de 188, 63, 1263, 952 e 487 g ha-1 de B, Cu, Fe, Mn e Zn, respectivamente. A produtividade média de grãos utilizando a adubação mineral foi de 6,7 t ha-1, ao passo que 7,1 t ha-1 foram obtidas com a aplicação do adubo orgânico. O composto de estábulo proporciona a mesma nutrição verificada com a adubação mineral ao milho cultivado em solo de boa fertilidade química.
The Role of Molecularly Imprinted Polymers In Sensor Technology: Electrochemical, Optical and Piezoelectric Sensor Applications
Authors: ERTUĞRUL UYGUN Hilmiye Deniz , DEMİR Münire Nalan
Published: November 2023

With the help of molecular imprinting technology, artificial receptors can be made and used for identification. This technique's limitless application increases polymer technology and makes it adaptable to other technologies. In this study, examples of sensor applications are used to explain molecular imprinting technology (MIT) and its brief history. MIT can be used to create polymer-based artificial receptors with remarkable selectivity and affinity to detect any target molecules that can be imprinted on a polymer. A monomer is synthesized around a template molecule to create a selective cavity that serves as an artificial receptor. Molecularly imprinted polymers (MIP) offer a wide range of uses and have recently garnered much attention. These polymers' production methods, production kinds, and molecular imprinting techniques are all thoroughly detailed. The outstanding properties of MIPs make a crucial contribution to sensor applications offering selective, fast, easy, and cost-effective analysis, which became very popular after Clark published his first biosensor study. Apart from the biological recognition receptors, MIPs have the advantage that they are not affected by physical conditions of the environment, such as temperature, pH, and ion strength. To overcome the biological recognition receptors' disadvantages, molecularly imprinted polymers can be used for sensor development. From the point of view of the review, the combination of MIPs and sensors was explained and proposed as an informative paper.
The Effect of Play-Based Movment Education Program in Supporting the Development of Sedentary 5-Year-Old Children
Authors: CİVELEK Perihan , UYANIK Gülden
Published: November 2023

This study aims to investigate the impact of a play-based movement education program conducted outdoors and in the classroom on the motor development, physical activity, and social skills of sedentary five-year-old children. The experimental phase of the study spans a total of eight weeks, divided into two consecutive four-week periods. In line with this, children in the experimental group participated in the movement education program both outdoors and in the classroom. On the contrary, children in the control group solely engaged in daily classroom activities during the same designated times. Throughout these activities, the number of steps taken by children in both groups was meticulously recorded through pedometer measurements. The findings of this study demonstrate that the play-based movement education program significantly boosted the motor development and social skills of the children in the experimental group, while no noticeable improvement was observed in these aspects among the children in the control group. Notably, the number of steps taken by the children in the experimental group was markedly higher compared to those taken by the children in the control group. The results indicate that the skills acquired by the children in the experimental group displayed a lasting impact.
LA PROTECCIÓN DEL SOFTWARE EN COLOMBIA: DERECHOS DE AUTOR
Authors:   Corporación Universitaria Republicana, Garnica Estrada Evelyn , Franco Calderón José Alejandro , Plazas Estepa Rodrigo
Published: November 2023

In Colombia, software is protected through author registration, which is used to verify the reconciliation of computer intellectual property, including soft- ware programs, immediately as they are created and fixed in a tangible medium. This article presents the discussion on the patentability of this type of software in Colombia and is discussed by the author in the form of legal protection with a description of the software programs, present in the historical context, regulatory and legal aspects of Colombia, also describes the software elements susceptible to intellectual property protection, registration advice, moral and patrimonial rights.