bluuebunny/crossref_metadata_2025 huggingface dataset:
Yield and quality of selenium-rich potatoes grown from 10-15 mm tubers
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, STAROVOITOV VIKTOR I.
Published: June 2024

Small mini-tubers up to 15 mm can be used for growing high-quality food potatoes saturated with scarce trace elements, for example, selenium, which is a powerful immunomodulator and antioxidant. This requires determining the optimum concentration of selenium applied to plants. The authors studied the yield and basic quality indicators of selenium-saturated food potato tubers grown in 2019-2021 from non-standard mini-tubers with a size of 10 to 15 mm. The research was conducted in 2019-2021 on varieties Gulliver, Ametist and Grand grown on sod-podzolic medium-cultivated sandy loam soil. The experiment course included two options: control - without treatment, experiment - leaf treatment of plants with sodium selenite. The studies were carried out in accordance with the existing methods. As a result of the experiment, the average gross yield was 17.3 to 18.7 t/ha, the marketability in terms of tuber size was 96.5 to 97.4%. In the experiment samples, the selenium content in tubers averaged 0.040 to 0.0375 mg/kg over three years, which does not exceed the maximum permissible concentration in potatoes of 0.5 mg/kg. When using leaf treatment with sodium selenite, the increase in the selenium content in tubers relative to the control was 0.08 to 0.10 mg/kg of raw weight. Leaf treatment with sodium selenite at a dose of 3 g/ha did not significantly affect the quality of potato tubers, but increased the selenium content in tubers to 0.06 to 0.10 mg/kg of raw weight. The profitability of growing food potatoes from small non-standard mini-tubers obtained by the aerohydroponic method and leaf treatment with sodium selenite, depending on the variety, is 16.1 to 28.6%. To obtain optimum selenium content in tubers, it is proposed to increase the concentration of sodium selenite and continue research on increasing yield and improving the quality of tubers.
Application concept of an adaptive boom distribution system for a small-size single-leg sprayer
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Dembovskiy I.A.
Published: June 2024

A small-size sprayer with vertical oscillations of the distributor boom without complex copying and compensating devices does not provide quality spraying. Primary seed production requires the development of new approaches to ensure the spreading accuracy of plant protection products (PPP). For this purpose the concept of application of adaptive distribution system of a small-size boom sprayer is proposed and theoretically substantiated. Field experiments with the use of a single-axis boom sprayer of the wheelbarrow type were carried out. The theoretical description of conditions of fulfillment of the spraying operation in relation to violation of the scheme of distribution of working liquid is given. Optimization of values of current frontal angles of the spraying torch is carried out. It has been established that the average range of vertical vibrations of the boom of a single-legged sprayer, like a wheelbarrow, ranges from 16° to 29°. A hypothesis has been proposed to increase the uniformity of distribution of liquid preparations. This is achieved by controlling the geometry of the spray pattern. Analytical dependences of the influence of the geometric parameters of the sprayer and the angle of its transverse inclination on the formed width of the processed strip and the required spray pattern angle were found. A nomogram and operational schedule of sprayer operating modes for the adaptive sprayer distribution system have been developed. With a base spray angle of 110°, the permissible limits for the width of the processing strip; with a lower tilt of the boom, a spray angle of 85° is provided, and with an upper tilt, 135 to 145°. The use of the original balancing device reduces the vertical boom oscillation range up to 14°. The difference in the values of the coefficient of variation of the transverse distribution of the working fluid, at typical and adaptive orientation of the planes of the spray-cone angle in the model experiment was 9.5%. The proposed hypothesis is confirmed.
Levitating ‘Carousel’ milking platform: conceptual approaches to its designing
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, KIRSANOV VLADIMIR V.
Published: June 2024

Large dairy farms use mainly imported technological equipment in automated rotary milking parlors, which provide the maximum throughput capacity of 100 to 500 animals per hour. The most capital-intensive component of the rotary ‘Carousel’ milking parlor is a rotating platform carrying the main load (its own weight and the weight of the animals being moved). The nearly round-the-clock operation mode predetermines significant power consumption and wear of the drive, support, guide rollers and rails making it rather labor-intensive to replace these parts. Therefore, an urgent issue is the import substitution of equipment. In order to increase the operational reliability of the rotary ‘Carousel’ milking parlor, to reduce capital costs during installation, and current costs for maintenance and repair, the authors proposed to develop a resource-saving design of the rotary milking platform. The paper presents the technological design of levitating milking platform of the ‘Carousel’ type with the use of movers operating on permanent magnets (Halbach array) on the magnetic levitation principle (unsupported suspension), and the structural and logical model of a magnetic suspension of the milking platform. The advantages of such a system include the practical absence of friction force to rotate the load-carrying platform with animals, which will require significantly lower drive power. In addition, we obtain quiet movement, significantly lower operating costs associated with the need to replace the support rollers, lubricate bearings, and maintain two or three electric traction drives, etc. The innovative attractiveness of the development lies in the possibility of designing circular and linear magneto-planning electric transport in technological installations to move and manage animals in milking parlors, and move robotic feed cars in feed shops, storage facilities, and around the farm.
Rotary separator of the stripped grain pile in the inclined chamber of the combine harvester
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Ozherelev V.N.
Published: June 2024

Preliminary separation minimizes damage of free grain by the working parts of the thresher when stripping standing crops. For this purpose, it is advisable to use the inclined chamber of a combine harvester. The purpose of this study is to evaluate the separating ability of a rotary separator depending on its design parameters and operating mode. The research included two stages. In the first series of experiments, the distance between the rod rings was changed (6; 8; 10; 12, and 14 mm), in the second series: the peripheral speed of the rotor surface (1 to 3 m/s). Experimental studies were carried out on winter wheat of the “Moskovskaya 56” variety with a moisture content of 12%. The inclination angle of the experimental installation body in all variants of the experiment was 45°, and the supply of stripped grain heap was 1 kg/s. Based on the results of laboratory studies, it was established that the intensity of separation of free grain increases as the distance between the rod rings of the device increases and the peripheral speed of the rotors decreases. The maximum passage of loose grain (100%) corresponds to a peripheral speed of the rotors of 1 m/s and a distance between the rod rings of 14 mm. The reserves for increasing the productivity of a rotary separator are an increase in the diameter of the rotors and a decrease in their peripheral speed. When these parameters change by 30 to 35%, the transport capacity of the inclined chamber remains at an acceptable level.
Condenserinstallation for a rural distribution network of 0.4 kV: construction features
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Tropin V.V. 
Published: June 2024

Reactive power compensation based on a capacitor plant connected to a rural 0.4 kV distribution network, when using non-specialized contactors, is accompanied by the occurrence of large starting currents of capacitors. In addition, the installation of a conductor connection with load current transformers requires structural modification of the capacitor plant. In order to eliminate these disadvantages, it is proposed to use a capacitor bank controlled by a time relay and protected from inrush currents by three RL circuits. In this case, the “on-off” mode of the capacitor bank must be switched to by an internal signal of the capacitor bank setting the time interval “on-off”. Using a mathematical model, as well as a three-phase physical model with a power of 1.2 kV, the authors studied the behavior of transient and steady-state currents at various values of the parameters of RL circuits.The initial invariant parameters of the model were the reactive resistances of capacitors and inductors. The nominal value of the phase current of the capacitor bank was 2.14 A. The variable parameters were the values of the active resistances of the RL circuits, which took the values of 0, 10, 20, 30 and ∞. The oscillogram of stationary and transient current was studied. As a result, it was found that in order to match the capacitor bank to the criterion of using circuit breakers and contactors of the 0.4 kV network, the resistance value of the RL circuit resistor of each phase of a three-phase capacitor bank should be tenfold higher than the reactance of the current-limiting coil of the RL circuit and be five times less than the reactance value of the power capacitor of the capacitor bank phase. In rural 0.4 kV electric networks, a single 25 kV capacitor plant with simple autonomous control can be installed to compensate for reactive power. Several capacitor plants can compensate for reactive loads of 50 and 75 kVAr.
Protection of electric generators of distributed generation objects against emergency modes
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Bolshev V.Е.
Published: June 2024

Distributed generation is a good solution for areas remote from centralized power supply sources as it helps increase the reliability of consumer operation. Distributed generation power supply systems use renewable sources of electricity, diesel generators and gasoline generators in the form of mobile power stations, which in most cases are not equipped with modern means of protection. This study presents an analysis of existing means of protecting electric generators from abnormal and emergency operating conditions, including voltage asymmetry, which is one of the factors reducing the service life of generators and is typical for rural electrical networks. During the analysis, the authors determined the main types of generator protection against emergency operation modes: protection of stator windings, protection against underfrequency and overfrequency, protection against undervoltage and overvoltage, protection against voltage (current) asymmetry. It is noted that the main cause of voltage asymmetry leading to mechanical vibration and rapid overheating of the rotor is single-phase loads in the system, which are unevenly distributed over three phases. The problem of voltage asymmetry is mainly solved by redistributing loads in transmission lines and/or installing compensating devices. However, in rural power supply systems, unbalanced load distribution is rarely corrected. The voltage asymmetry can be compensated through the use of hybrid active power filters of series compensation and improved control methods of these filters. Voltage converters that are effective in equalizing voltage asymmetry in PV systems can effectively protect small capacity diesel power generators provided that the use of additional equipment is economically viable.
Differentially Private Synthetic Control
Authors: Rho Saeyoung , Cummings Rachel , Misra Vishal
Published: June 2024

Synthetic control is a causal inference tool used to estimate the treatment effects of an intervention by creating synthetic counterfactual data. This approach combines measurements from other similar observations (i.e., donor pool) to predict a counterfactual time series of interest (i.e., target unit) by analyzing the relationship between the target and the donor pool before the intervention. As synthetic control tools are increasingly applied to sensitive or proprietary data, formal privacy protections are often required. In this work, we provide the first algorithms for differentially private synthetic control with explicit error bounds. Our approach builds upon tools from non-private synthetic control and differentially private empirical risk minimization. We provide upper and lower bounds on the sensitivity of the synthetic control query and provide explicit error bounds on the accuracy of our private synthetic control algorithms. We show that our algorithms produce accurate predictions for the target unit and that the cost of privacy is small. Finally, we empirically evaluate the performance of our algorithm, and show favorable performance in a variety of parameter regimes, as well as provide guidance to practitioners for hyperparameter tuning.
Development of infill drilling recovery models for carbonate reservoirs using neural networks and multivariate statistical as a novel method
Authors: SOTO R. , H CH. , Becerra WU , BUBELA A. M.
Published: June 2024

This work introduces a novel methodology to improve reservoir characterization models. In this methodology we integrated multivariate statistical analyses, and neural network models for forecasting the infill drilling ultimate oil recovery from reservoirs in San Andres and Clearfork carbonate formations in West Texas. Development of the oil recovery forecast models help us to understand the relative importance of dominant reservoir characteristics and operational variables, reproduce recoveries for units included in the database, forecast recoveries for possible new units in similar geological setting, and make operational (infill drilling) decisions. The variety of applications demands the creation of multiple recovery forecast models. We have developed intelligent software (Soto, 1998), Oilfield Intelligence (OI), as an engineering tool to improve the characterization of oil and gas reservoirs. OI integrates neural networks and multivariate statistical analysis. It is composed of five main subsystems: data input, preprocessing, architecture design, graphic design, and inference engine modules. One of the challenges in this research was to identify the dominant and the optimum number of independent variables. The variables include porosity, permeability, water saturation, depth, area, net thickness, gross thickness, formation volume factor, pressure, viscosity, API gravity, number of wells in initial waterflooding, number of wells for primary recovery, number of infill wells over the initial waterflooding, PRUR, IWUR, and IDUR. Multivariate principal component analysis is used to identify the dominant and the optimum number of independent variables. We compared the results from neural network models with the non-parametric approach. The advantage of the non-parametric regression is that it is easy to use. The disadvantage is that it retains a large variance of forecast results for a particular data set. We also used neural network concepts to develop recovery models. The neural network infill drilling recovery model is capable of forecasting the oil recovery with less error variance compared with non-parametric, fuzzy logic and regression models.
Microalgal Derivatives as Potential Nutraceutical and Pharmaceutical: Boon to Human Beings
Authors: Namrata Dash , Amit Kumar Bajhaiya , Chandrashaker B , Poornachandar Gugulothu
Published: June 2024

Background: Marine resources have diverse biological and beneficial entities for human beings. Among them, microalgae are one of the eukaryotic photosynthetic organisms found in freshwater and marine environments with an immense source of metabolites. They consist of high nutraceutical and value-added compounds for health concerns. Objective: Most microalgal species like- chlorella, spirulina, Isochrysis, Nannochloropsis, etc. are found to synthesize biologically active secondary metabolites which are having high pharmaceutical and nutraceutical value. Some of the purely extracted compounds are Lecithin, fucoxanthin, astaxanthin, and most important Sulphur polysaccharides- fucose, galactose, xylose, rhamnose, etc. are providing anti-microbial, anti-fungal, anti-viral, anti-cancer and anti-diabetic activities. Methods: Many of the prior studies demonstrated the compilation of naturally derived secondary metabolites for their potential application in most fields. Because of their wide-ranging potential for use in biopharmaceutical and nutraceutical industries, microalgae have recently gained significant interest on a global scale. Result: Microalgae are both parts of the dietary ingredients and bioactive pharmaceuticals. A number of microalgal species have been explored for their significance towards their high-value products with their exceptional pharmacological and biological properties. Conclusion: This current review discussed the uses and benefits of microalgae for the manufacture of nutraceuticals and the medicinal use of diverse bioactive compounds.
Delivering HIV and TB services amidst the COVID-19 pandemic in Indonesia: a qualitative study of challenges and mitigation strategies
Authors: Wulandari Luh Putu Lila , Negara Srila Nirmithya Salita , Wahyuningtias Siska Dian , Mashuri Yusuf Ari , Putra I Wayan Cahyadi Surya Distira , Fardousi Nasser , Ahmad Riris Andono , Boettiger David , Probandari Ari , Subronto Yanri Wijayanti , Wiseman Virginia , Liverani Marco
Published: June 2024

Background

Indonesia has the second-highest burden of tuberculosis (TB) globally and is experiencing one of the fastest-growing HIV epidemics worldwide. The COVID-19 pandemic disrupted access to essential health services, including those for TB and HIV, due to health system overload, social distancing measures, and negative economic repercussions on the health sector and the population. An in-depth understanding of these challenges and the health system responses to mitigate the negative impact of the pandemic on TB and HIV services is crucial to building health system resilience and preparing for future emergencies.

Methods

This qualitative study, conducted in two cities in Indonesia, explored the impact of the COVID-19 pandemic on TB and HIV services including mitigation strategies to sustain the provision of testing and treatment in the midst of the pandemic. Between February and June 2022, semi-structured interviews were conducted with 16 healthcare workers and 16 clients at nine health centers (puskesmas), three hospitals, and one Community Center for Lung Health in Bandung and Yogyakarta. Themes were identified from transcripts using open and selective coding and then refined.

Results

Extraordinary measures were implemented in health facilities to sustain TB and HIV service delivery, and prevent the spread of COVID-19, including testing of clients for COVID-19 before receiving medical care, physical distancing when visiting healthcare facilities, revised schedules for medicine dispensing, involvement of community health workers and peers in community outreach activities such as the home delivery of medicines, and the use of telemedicine. Challenges encountered during the implementation of these strategies included medicine stock-outs, health worker overload, lack of sufficient client-provider interaction and technical difficulties when implementing telemedicine, and the risk or fear of exposure to COVID-19 among the community health workers and peers.

Conclusions

Significant efforts were made to mitigate disruptions to TB and HIV services during the COVID-19 pandemic. However, some challenges were encountered. Key policy recommendations to strengthen pandemic preparedness include investing in local manufacturing and robust drug supply networks to prevent medicine shortages, and supporting community health workers to alleviate workload issues, reduce the risk of disease exposure, and explore the potential for a financial incentive system. Equally vital is the need to invest in staff training and education, as well as implementing user-friendly telemedicine technologies.
THE PREDICTIVE POWER OF SIMPLE SYSTEMIC INFLAMMATORY PARAMETERS FOR IN–HOSPITAL MORTALITY IN ELDERLY PATIENTS
Authors: AZ Adem , DOĞAN Yunus , SÖĞÜT Özgür , AKDEMİR Tarık
Published: June 2024

Introduction: We evaluated the predictive power of systemic inflammatory parameters, including the neutrophil/lymphocyte ratio, C-reactive protein/ albumin ratio, monocyte/eosinophil ratio, and platelet/lymphocyte ratio, for allcause in-hospital mortality in elderly. Materials and Method: This single–center and retrospective study enrolled 46,563 patients aged ≥65 years who presented to the emergency department due to various complaints from June 2019 to June 2022. We evaluated the demographics, clinical characteristics, laboratory data, and clinical outcomes of the patients. Results: A total of 3,385 hospitalized patients, 1,808 males and 1,577 females, were included in the study. The average age was 76.25±7.35 years. The overall mortality rate was 11.73%. Nonsurvivors had significantly elevated neutrophil/lymphocyte, C-reactive protein/albumin, monocyte/eosinophil, and platelet/lymphocyte ratios compared to survivors (p=0.0001 for all comparisons). Elevated neutrophil/lymphocyte and C-reactive protein/albumin ratios were determined as independent predictors of mortality. A neutrophil/lymphocyte ratio ≥9.41 had 46.97% sensitivity and 79.99% specificity for predicting mortality. While the positive predictive value was 23.7%, the negative predictive value was 91.9%. Additionally, a C-reactive protein/albumin ratio ≥13.18 was identified as the cut-off for mortality, with 57.07% sensitivity and 69.91% specificity. Its positive and negative predictive values were 20.1% and 92.5%, respectively. Conclusion: Mean serum neutrophil/lymphocyte and C-reactive protein/ albumin ratios on hospital admission were associated with all-cause mortality in hospitalized patients aged ≥65 years. However, their sensitivity and positive predictive value were relatively low. Nevertheless, negative predictive value for both were significantly high. This implies that these parameters could be used to determine the elderly at a lower risk of mortality. Keywords: Aged; Biomarkers; Decision Making; Mortality.
A SINGLE-CENTER COMPARATIVE STUDY OF ENDARTERECTOMY AND STENTING FOR SYMPTOMATIC CAROTID ARTERY DISEASE: DECISION-MAKING PROCESSES AND EARLY TO MID-TERM OUTCOMES
Authors: ÇİÇEK Ömer Faruk , AKBAYRAK Hakan , ÖZDEMİR Gökhan , EREN Fettah , DEMİRTAŞ Mücahit Tahsin , ÖNGÜN Gözde , ORHAN Atilla , BÜYÜKATEŞ Mustafa
Published: June 2024

Introduction: Ischemic stroke constitutes a significant burden on global health. Carotid artery atherosclerosis is a significant contributor to the occurrence of ischemic strokes. Both carotid endarterectomy and stenting are viable treatment options for symptomatic carotid artery disease, yet the optimal choice between them remains debated, particularly in elderly patients with multiple comorbidities. This study aims to compare decision-making processes and early to mid-term outcomes between carotid endarterectomy and carotid artery stenting in elderly symptomatic carotid artery disease patients. Materials and Method: A total of 88 symptomatic carotid artery disease patients (carotid endarterectomy: n=35, mean age: 71.72±7.87 years; carotid artery stenting: n=53, mean age: 70.64±7.46 years) were retrospectively analyzed. Results: No significant differences were observed in demographic characteristics between carotid endarterectomy and stenting groups. Chronic renal disease was more prevalent in the carotid endarterectomy group. Carotid artery stenting patients had a higher prevalence of 50–69% stenosis and less plaque ulceration. Complication rates were comparable between groups, with longer intensive care and hospitalization durations in the carotid endarterectomy group. Mid-term mortality rates and major complications did not significantly differ between groups. Conclusion: Both carotid endarterectomy and carotid artery stenting are effective treatments for symptomatic carotid artery disease. Despite differences in lesion characteristics, complication rates were similar between carotid endarterectomy and carotid artery stenting. This study emphasized the efficacy of a full cooperation between the cardiovascular surgery and neurology teams through an in-depth evaluation of each of the patients and the creation of individualized treatment strategies that optimized overall outcomes. Keywords: Aged; Endarterectomy; Carotid; Carotid Stenosis; Stents.
The prevalence of skin diseases among the elderly patients applying a tertiary dermatology outpatient clinic: A retrospective analysis of 2400 patients
Authors: ETGÜ Fatma , KASKO ARİCİ Yeliz
Published: June 2024

Introduction: As the population ages, particular health issues affect this susceptible age group. The aim of this study was to evaluate the incidence, frequency, age, gender, and season-of-year distribution of dermatological disorders among geriatric patients. Materials and Method: This was a retrospective, descriptive study. Skin diseases were categorized into 12 different groups and analyzed according to the age groups, gender, and season of the application.  Results: The study included 2431 patients (1203 were female and 1228 were male). The mean age of the patients was 74.02±7.07(65-100) years. For 23.1% of these patients, the problems were acute, and for 76.9%, they were chronic. The ratio of patients with one, two, and more than three complaints was 81.0%, 13.9%, and 5.1%, respectively. The most frequent diagnoses were pruritus (n=424, 17.4%); eczematous dermatitis (n=395, 16.2%); fungal infections (n=372, 15.3%); premalign and malign skin disorders (n=247, 10.2%); bacterial infections (n=147, 6%); viral infections (n=118, 4.9%); papulosquamous diseases (n=95, 3.9%); urticaria and adverse drug reactions (n=96, 3.9%); benign skin tumors (n=79, 3.2%); acneiform disorders (n=40, 1.6%); and vesiculobullous disorders (n=22, 0.9%). Conclusion: The majority of skin diseases among the elderly are not life-threatening, and they are preventable. Knowing the prevalence and distribution of skin diseases seen in the elderly can help prevent these disorders and develop policies for better management of elderly-related health issues.  Keywords: Aged; Skin Diseases; Preventive Medicine; Skin Aging.
Gamifying Reading Motivation in EFL Students: Enhancing Engagement and Language Learning Through ICT
Authors: Anggrainy Fitri Pangestu Noer , Sharizan Sharizan , Sriyanda Ricky , Farhan Muhammad
Published: June 2024

This research investigates the potential of gamification in encouraging reading motivation among English as a Foreign Language (EFL) students. Reading motivation is crucial in language learning, and gamification offers promising inenues to enhance it. The study examines both reading skills and the various factors influencing reading motivation. Utilizing a conceptual paper methodology, this research systematically analyzes existing literature, theories, and concepts related to gamification and reading motivation in EFL learning, providing a comprehensive synthesis that forms the basis for understanding the potential impact of gamification on enhancing reading motivation among students. The synthesis of findings indicates that gamification positively impacts EFL learners’ reading motivation by fostering greater involvement, independence, and belief in their reading abilities. By incorporating game elements like points, badges, and leaderboards, this study reveals that through gamification in reading activities, learners not only achieve a sense of progress and competition but also overcome challenges like lack of interest, self-confidence, and autonomy in EFL reading, ultimately fostering increased motivation.
PERAN MASYARAKAT DALAM PEMBANGUNAN INFRASTRUKTUR JALAN DI DESA DURIAN, KECAMATAN SUNGAI AMBAWANG, KABUPATEN KUBU RAYA
Authors: Alfaed Dodi , Arkanudin Arkanudin , Maya Monika , Aminah Siti , Marini Marini , Putri Riyana Ramadhani , Zibran Yazid
Published: June 2024

Infrastructure development is the government's responsibility towards the community, but in reality the infrastructure growth carried out by the government is gradual, this gives rise to unequal development in each region which has an impact on unequal road development. This research was conducted because of uneven development in Durian Village, while based on the APBDes, the priority development in the village is infrastructure. The aim of the research is to describe the roles played by the community in building roads. This research method uses a qualitative method with a descriptive analysis approach, determining informants using a purposive sampling technique consisting of 5 people. The results of research on the role of NGOs in the form of deliberation and fundraising carried out by the community are mutual cooperation, contributions and cooperation with NGOs. The role of NGOs and communities in the road construction process.
Leadership of Mobile Health Units for Preventative Health—Using Networks and Distributed Digital Platform
Authors: Soto Sheila , Cordova Rodrigo Valenzuela , Khambekar Prashant
Published: June 2024

ABSTRACT: The University of Arizona’s Primary Prevention Mobile Health Unit (MHU) Program is an innovative model that tackles hurdles faced by disadvantaged communities in Arizona by directly providing free preventative services and education. The MHU, a community outreach model, utilizes Promotores de Salud or Community Health Workers (CHWs) in collaboration with a network of community organizations and interdisciplinary health science student volunteers as service learning. The study provides an overview of services provided by the MHUs using publicly available data. It analyzes individual and group interactions and some gaps in quality follow-up after linkage-to-care. The paper addresses these gaps by discussing the potential role of blockchain technology as an integrated digital platform that can provide automatic reminders and follow-up analysis of referrals to improve population health.
Chatbot vs. Human: The Impact of Responsive Conversational Features on Users’ Responses to Chat Advisors Authors
Authors: Klein Stefanie , Utz Sonja
Published: June 2024

As educational organizations increasingly consider supporting or replacing human chat advisors with chatbots, it is crucial to examine if users perceive a chatbot differently from a human. Chatbots’ conversational features may signal responsiveness and thus improve user responses. To explore this, we conducted three online experiments using a study advising setting. We computed pooled data analyses because the individual study results did not provide clear support for our hypotheses. Results indicate that users prefer human agents regarding competence and intention to use but not perceived enjoyment. Responsiveness increased likability, warmth, and satisfaction. Perceptions of the interaction mediated the responsiveness effects. Our findings suggest that educational organizations can support their study advising departments with well-functioning chatbots without eliciting negative user responses.
What’s In a Name and/or A Frame? Ontological Framing and Naming of Social Actors and Social Responses
Authors: Westerman David , Vosburg Michael , Liu Xinyue “Gordon” , Spence Patric
Published: June 2024

Artificial intelligence (AI) is fundamentally a communication field. Thus, the study of how AI interacts with us is likely to be heavily driven by communication. The current study examined two things that may impact people’s perceptions of socialness of a social actor: one nonverbal (ontological frame) and one verbal (providing a name) with a 2 (human vs. robot) x 2 (named or not) experiment. Participants saw one of four videos of a study “host” crossing these conditions and responded to various perceptual measures about the socialness and task ability of that host. Overall, data were consistent with hypotheses that whether the social actor was a robot or a human impacted each perception tested, but whether the social actor named themself or not had no effect on any of them, contrary to hypotheses. These results are then discussed, as are directions for future research.
WILD FRUIT SPECIES ON DISTURBED LANDS OF THE NORTH CAUCASUS
Authors:   Federal State Budgetary Scientific Institution «North Caucasian Research Institute of Mountain and Foothill Gardening», Nalchik, KBR, Russia, Satibalov Aslan Vladimirovich , Aliev Igor Nazhafovich ,   Federal State Budgetary Scientific Institution «North Caucasian Research Institute of Mountain and Foothill Gardening», Nalchik, KBR, Russia, Khamarova Zora Khakimovna ,   Federal State Budgetary Scientific Institution «North Caucasian Research Institute of Mountain and Foothill Gardening», Nalchik, KBR, Russia, Bakuev Zhamal Khazhiosmanovich ,   Federal State Budgetary Scientific Institution «North Caucasian Research Institute of Mountain and Foothill Gardening», Nalchik, KBR, Russia
Published: June 2024

Wild fruit species on disturbed lands grow in degraded areas and have the ability to quickly restore the ecosystem. Restoration of disturbed lands in mountain and piedmont areas plays a big role and is a significant resource in the national economic potential of the region, an important reserve for agricultural production. The article provides an overview of the disturbed lands of the North Caucasus as a result of mining. For the purpose of biological rehabilitation, a classification of technogenic landscapes has been developed. The state of wild fruit and berry plants in disturbed areas has been revealed, which depends on the types of substrate, topography, climate, parts of the slopes and their steepness. Eleven wild fruit species grow naturally in quarries in the study region. Among them, sea buckthorn and dog rose stand out. They tolerate drought well and are resistant to low soil fertility. Cherry plum, common hazel and hawthorn prefer better moisture conditions. The degree of root growth in different parts of the slope has been established, which makes it possible to determine the suitability of soil and hydrological conditions for wild fruit species and to plan appropriate measures. It has been confirmed that the moist parts of the lower slopes are the most favorable for the growth and development of plants. The individuality of the formation of wild fruit and berry plantings according to the exposures at each deposit separately is noted. The prospects of wild fruit breeds capable of producing root shoots are substantiated. It was revealed that the spread of root suckers occurs more intensively on light soils, despite the fact that moisture is better on clay; this is not the main criterion for the spread of suckers. An assortment of wild fruit plants has been developed to create protective plantings in various environmental conditions. Measures are proposed to restore disturbed lands. Key words: WILD FRUIT SPECIES, DISTURBED LANDS, SLOPE, QUARRY, REHABILITATION, ROOT OFFSPRING, ASSORTMENT
REDUCTION OF THE STRATIFICATION PERIOD OF GRAFTED PLANTING MATERIAL OF GRAPES OF TECHNICAL VARIETIES
Authors:   All-Russian Research Ya.I. Potapenko Institute for Viticulture and Winemaking – branch of the Federal State Budget Scientific Institution «Federal Rostov Agricultural Research Center», Novocherkassk, Russia, Grigoriev Aleksandr Aleksandrovich
Published: June 2024

Due to the fact that the classical technology of growing grafted grape seedlings does not provide producers and researchers with the necessary quantity and quality of planting material, in the conditions of the Rostov region in 2020-2022, the effectiveness of pre-inoculation treatment of grafting components with modern drugs of various nature was studied. The studied drugs were Humat+7, Cultimar, NanoKremniy and Radiopharm. According to the research results, for the period 2020-2022, it was found that the pre-inoculation treatment of grape grafting components with these drugs is effective. Stimulation of growth processes provides better callus formation during the stratification period, where on the 15th day after inoculation, the formation of a complete circular callus was noted in 72.2-93.9 % of grafts, which is 18.3-40.0 % more than in the control variant. When analyzing the quality of plants after inoculation, an increase in the number of first-class grafts was recorded from 56.7 % in the control to 64.4-95.0 % in the treated variants. There was also a decrease in the number of second-rate grafts from the lowest possible to 3.9 %. In addition, complete absence of rejections was noted in 6 out of 12 experimental variants with the use of drugs, and in the other 6 variants, where the rejections varied from 3.9 to 16.1 %, the rejecting value was 1.4-5.7 times less than in the control. The highest value of the final yield of seedlings was noted when the rootstock of the grafted seedlings was treated with a solution of the drug Humat +7 and amounted to 53.3 %. In general, all variants that were treated with drugs showed better results than the control variant treated only with water. Key words: GRAPES, CUTTING, VARIETY, SCION, ROOTSTOCK, STIMULANTS, REGULATORS, PAS, GRAFTING
Exploring the Educational Implications of 3-Year-Old Byeory’s Spontaneous Song-Making and Singing
Authors:   Korean Music Education Society, Choi Byeol Nyeo , Kim Ji Yeon , Park Hyoungshin
Published: June 2024

The aim of this study is to investigate educational implications of spontaneous song-making and singing (SSMS) among 3-year-old children. Observations were conducted on the SSMS of a 3-year-old child named Byeory at the T Childcare center in W City over a 15-week period, supplemented by interviews with parents and teachers. Data were gathered through observation notes, video recordings, and interview transcripts, and were analyzed using qualitative analysis method based on the five-step cycle proposed by Yin (2021). Research findings reveal that Byeory's SSMS occurred in various everyday contexts, fostering the musical development of young children and providing opportunities for peer interaction and emotional expression. Furthermore, it was observed that Byeory's SSMS experiences were dynamically shaped and enhanced through emotional support, including environmental support from parents and teachers. In conclusion, this study highlights the educational value of early childhood SSMS enriched with creative elements, stressing the importance of attentive and proactive support for spontaneous and creative musical experiences that unfold in daily lives of young children.
Qualitative Case Study on Practices of Music Creation Classes Using Digital Technology: Based on Actor-Network Theory
Authors:   Korean Music Education Society, You Hayang
Published: June 2024

This study aims to explore practices of music creation classes that utilize digital technology based on actor-network theory. For this purpose, the study conducted a qualitative case study of four middle school music teachers who incorporate digital technology in their music creation classes. The study revealed that the interaction between human and nonhuman actors in and out of school differed among teachers, such as the combination of heterogeneous things, entanglement of what is mine and what is not, alliances with actors beyond the school, and coexistence of old and new. The study also found that nonhuman actors exerted their own positive or negative thingpower on teachers, such as new attempts and challenges, becoming teachers as co-learners, excessive focus on technology, and unexpected occurrences, resulting in changes in teachers’ teaching practices. Based on these findings, it was suggested that there is a need for research that considers a variety of human and nonhuman actors involved in teachers' teaching practices and comprehends music creation classes using digital technology more diversely.
Analysis of Middle School Music Curriculum Text Using Text Mining
Authors:   Korean Music Education Society, Cho Suhee
Published: June 2024

The purpose of this study is to examine the characteristic changes in music curriculum over time using scientific analysis methods. To this end, the original texts of the Middle School music curriculum from the revised 2007 to the revised 2022 were analyzed using the TF-IDF technique of Text Mining, a big data analysis method based on artificial intelligence, to extract the core concepts of each curriculum and to examine the trends. As a result of the analysis, the following conclusions were drawn. First, Korean music curriculum have been in a state of flux, reflecting various factors such as global trends in music education, education policies, and needs of the educational community. Second, the paradigm of ‘curriculum reconceptualization’ has been increasingly accepted over time. Third, text mining can be used to analyze and visualize curricula in an objective way, making it easy to intuitively understand curriculum changes over time. It can be a useful tool for curriculum-related research.
О РАЗНОВИДНОСТЯХ ПРОЦЕССА ГОРЕНИЯВ ЭЖЕКТОРНОМ ДВУХКОНТУРНОМ ПУЛЬСИРУЮЩЕМ ВОЗДУШНО-РЕАКТИВНОМ ДВИГАТЕЛЕ
Authors:   Научно-производственная фирма «Ротор», МИГАЛИН К. В. , ЕГОРОВ А. Г. ,   Государственный университет Тольятти, БОЙЧУК И. П. ,   Государственный морской университет им. адмирала Ф. Ф. Ушакова, СИДЕНКО К. А. ,   Государственный университет Тольятти, МИГАЛИН К. К. ,   Государственный университет Тольятти
Published: June 2024

В эжекторном пульсирующем воздушно-реактивном двигателе (ПуВРД), как показали эксперименты, наряду с дефлаграционным горением могут наблюдаться и другие типы горения, отличающиеся достижением высоких амплитуд пульсаций давления в камере сгорания. Оценивается возможность достижения высоких амплитуд пульсаций при реализации таких видов горения, как сферическая детонация, объемное самовоспламенение и лавинная активация горения. Численное решение строится на замене процесса горения циклическим теплоподводом.
ДЕТОНАЦИЯ БОГАТЫХ СМЕСЕЙ ГАЗООБРАЗНЫХ ПРОМЫШЛЕННЫХ УГЛЕВОДОРОДОВ С КИСЛОРОДОМ
Authors:   Институт гидродинамики им. М. А. Лаврентьева Сибирского отделения Российской академии наук, ШТЕРЦЕР А. А. ,   Объединенный институт высоких температур Российской академии наук, БАТРАЕВ И. С. ,   Институт гидродинамики им. М. А. Лаврентьева Сибирского отделения Российской академии наук,   Объединенный институт высоких температур Российской академии наук, РЫБИН Д. К. ,   Институт гидродинамики им. М. А. Лаврентьева Сибирского отделения Российской академии наук, УЛЬЯНИЦКИЙ В. Ю. ,   Институт гидродинамики им. М. А. Лаврентьева Сибирского отделения Российской академии наук
Published: June 2024

Рассматривается технология получения водорода и, одновременно, наноразмерного детонационного углерода (НДУ), основанная на детонационном разложении газообразных углеводородов. На импульсном газодетонационном аппарате (ИГДА) проведены исследования процесса детонации метана (CH4), смеси метана с ацетиленом (0,85óî4 + 0,15ó2î2), ацетилена (C2H2), этилена (C2H4), этана (C2H6), пропилена (C3H6), пропана (C3H8) и бутана (C4H10) в присутствии минимально возможных добавок кислорода вплоть до верхнего предела детонации, определяемого спиновым режимом. Детонационное разложение производилось при начальном атмосферном давлении топливно-кислородных смесей. Для перечисленных углеводородов получены данные по производительности ИГДА по водороду и НДУ.
ВЛИЯНИЕ ТЕМПЕРАТУРЫ ДВУХЖИДКОСТНЫХ КАПЕЛЬ НА ХАРАКТЕРИСТИКИ ВТОРИЧНЫХ ФРАГМЕНТОВПРИ МИКРОВЗРЫВНОМ РАСПАДЕ
Authors:   Национальный исследовательский Томский политехнический университет, ФЕДОРЕНКО Р. М. , АНТОНОВ Д. В. ,   Национальный исследовательский Томский политехнический университет, СТРИЖАК П. А. ,   Национальный исследовательский Томский политехнический университет
Published: June 2024

Приведены результаты экспериментальных исследований влияния температуры двухжидкостных капель на характеристики вторичных фрагментов при микровзрывном распаде. В качестве компонентов исходных двухжидкостных капель использовались: дизельное топливо, керосин, рапсовое масло и вода. Объемная концентрация горючего компонента при проведении экспериментов составляла 90%. Температура двухжикостных капель и газовоздушной среды регистрировалась с помощью комплекса сбора данных National Instruments и малоинерционных термопар. Температура газовоздушной среды в проведенных экспериментах варьировалась от 630 до 750 К. Характеристики процессов микровзрывного распада двухжидкостных капель регистрировались с применением метода теневой съемки. Обработка полученных видеокадров осуществлялась с применением авторских программных кодов в MATLAB. Основные регистрируемые характеристики: размеры исходных капель в процессе нагрева; количество и радиусы вторичных фрагментов; времена задержки микровзрывного распада; времена распада исходной двухжидкостной капли на вторичные фрагменты. Установлена переходная граница по температуре двухжидкостных капель перед паффингом и микровзрывом. Предложен безразмерный критерий Fcd, позволяющий учесть одновременный вклад затрат времени, необходимого для прогрева двухжидкостной капли до условий микровзрывного распада, времени, необходимого на образование вторичных фрагментов, и соотношения площадей поверхности жидкости после и до распада. С применением предложенного критерия выделены области, характерные для различных режимов распада.
Educar para el bienestar emocional en tiempos convulsos: un estudio desde la perspectiva de la orientación escolar
Authors: Fernández Tilve María Dolores , Malvar-Méndez M.ª Laura
Published: June 2024

Las competencias emocionales se han convertido, actualmente, en una poderosa herramienta para el ejercicio de una acción orientadora que persiga unos altos estándares de calidad. Por lo tanto, los profesionales de la orientación cada día son más conscientes de que las emociones juegan un papel determinante en la práctica orientadora. Esto nos ha llevado a emprender un estudio con el objetivo de conocer la opinión de los orientadores/as escolares de la Comunidad Autónoma de Galicia acerca de la aplicabilidad de las competencias emocionales en su quehacer diario. Un estudio cuantitativo no experimental descriptivo, en el que se ha utilizado una escala de valoración tipo Likert como instrumento para la recogida de información y así acceder de manera rápida y clara a unos datos que nos ayudarían a disponer de un retrato completo sobre el estado de la cuestión. Los datos cuantitativos resultantes proporcionan una valiosa información para conocer las competencias emocionales más efectivas y útiles en la praxis orientadora y así afrontar de manera satisfactoria y favorable el bienestar.
Possibility of creating effective surface acoustic waves devices at frequency above 6 GHz
Authors:   Saratov State University named after N.G. Chernyshevsky, 410012, Russia, Saratov, Astrakhanskaya st., 83, Suchkov S.G. , Nikolaevtsev V.A. ,   Saratov State University named after N.G. Chernyshevsky, 410012, Russia, Saratov, Astrakhanskaya st., 83, Suchkov D.S. ,   Saratov State University named after N.G. Chernyshevsky, 410012, Russia, Saratov, Astrakhanskaya st., 83
Published: June 2024

In the paper the interaction of surface acoustic waves (SAWs) with reflectors and interdigital transducers (IDTs) with high aspect ratio electrodes (HAR-electrodes) are investigated. The conditions for the SAW resonant reflection and propagation and the effective IDT conversion of the SAW power into electrical power at the load have been obtained. The real possibility of the effective SAW devices creation (filters, delay lines, resonators, RFID tags) at frequencies above 6 GHz (up to 12-15 GHz) using HAR-electrodes was demonstrated.