bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Electricity Supply on the Performance of Small and Medium-Scale Enterprises in Nigeria: A Case Study of Calabar South and Calabar Municipality of Cross River State
Authors: Bassey Christian E. , Ikpe Imoh Kingsley
Published: August 2021

This research work analyzed the comparative study of the effect of electricity supply on the performance of small and medium-scale enterprises in Calabar South and Calabar Municipality,using small and medium scale businessmen and women as well as power holding company staff. The objectives of this study to analyze the comparative study of the effect of electricity supply on the performance of small and medium-scale enterprises in Calabar South and Calabar Municipality.The survey research design was adopted and a twelve (12) item structured questionnaire was used to obtain a sample size of 248 small and medium scale business owners and power holding staff randomly selected from the population. The results of the study revealed that there is a significant effect of electricity supply on the performance of small and medium-scale enterprises in Calabar South and Calabar Municipality. The results further revealed that insufficient electricity supply significantly affect the performance of small and medium-scale enterprises in Calabar South and Calabar Municipality.The study concludes that there are enormous difficulties being experienced by businesses in Cross River State and other parts of Nigeria due to inadequate and unreliable electric power supply. Thus an inadequate and unreliable supply of electricity imposes costs and therefore constrained firms’ operational performance as firms suffer high overhead cost due to the deficient electricity supply from the national grid. The study recommends that the Nigerian government needs to consider the issue of power supply reliability very seriously by facilitating both private and public investment in electricity infrastructure.
Los outsiders de la política uruguaya: abordaje desde la semiótica
Authors: Moreno Barreneche Sebastián
Published: August 2021

Este artículo estudia desde una perspectiva semiótica la reciente aparición en el escenario político uruguayo de candidatos outsiders. Concretamente, se trabaja sobre la base de cuatro figuras, tres de las cuales cobraron notoriedad en el marco de las elecciones nacionales de 2019: Ernesto Talvi, Juan Sartori y Guido Manini Ríos. Para complementar el análisis, se estudia también la figura de Edgardo Novick, cuyo ingreso a la política, que data de 2015, constituye también un interesante caso de outsider. El artículo discute cómo los cuatro candidatos construyeron su posicionamiento dentro del escenario político uruguayo a partir de las categorías “el académico”, “el empresario”, “el militar” y “el laburante”, respectivamente, todas vinculadas con su actividad previa a la incursión en política.
Pandemia y participación política de los jóvenes en América Latina
Authors: Leyva Muñoz Olivia
Published: August 2021

En un contexto de crisis provocada por la pandemia, el objetivo de la investigación es presentar una reflexión sobre el interés de los jóvenes por participar en política durante los procesos electorales del 2021, específicamente en las elecciones presidenciales de Chile, Perú, Nicaragua y Honduras, así como las elecciones intermedias que se realizarán en México y Argentina, en un año donde la pobreza y la desigualdad aumentan significativamente por la crisis económica que enfrentan los países en América Latina.
pengaruh gaya kepemimpinan
Authors: Fauziyah Nabilah
Published: August 2021

Tujuan penelitian ini untukmengetahui kepemimpinan lurah terhadap pemberdayaan masyarakat di Kelurahan Lautang Benteng Kecamatan Maritengngae Kabupaten Sidenreng Rappang. Tipe penelitian deskriptif kuantitatif. Sampel dalam penelitian yaitu 96 orang masyarakat dengan teknik purposive sampling menggunakan rumus Slovin.
Automatic Narrative Summarization for Visualizing Cyber Security Logs and Incident Reports
Authors: Gove Robert
Published: August 2021

Cyber security logs and incident reports describe a narrative, but in practice analysts view the data in tables where it can be difficult to follow the narrative. Narrative visualizations are useful, but common examples use a summarized narrative instead of the full story’s narrative; it is unclear how to automatically generate these summaries. This paper presents (1) a narrative summarization algorithm to reduce the size and complexity of cyber security narratives with a user-customizable summarization level, and (2) a narrative visualization tailored for incident reports and network logs. An evaluation on real incident reports shows that the summarization algorithm reduces false positives and improves average precision by 41% while reducing average incident report size up to 79%. Together, the visualization and summarization algorithm generate compact representations of cyber narratives that earned praise from a SOC analyst. We further demonstrate that the summarization algorithm can apply to other types of dynamic graphs by automatically generating a summary of the Les Misérables character interaction graph. We find that the list of main characters in the automatically generated summary has substantial agreement with human-generated summaries. A version of this paper, data, and code is freely available at https://osf.io/ekzbp/.
Sampling criteria and recording quality influence relaxation responses to lullabies
Authors: Savage Patrick E. , Ozaki Yuto , Trehub Sandra E.
Published: August 2021

The original paper’s sampling criteria involved selecting lullabies that adults rated as most likely to soothe a baby and non-lullabies rated as least likely to do so. Our analysis shows that lullabies in the stimulus set had systematically higher recording quality than non-lullabies, and those differences in recording quality were substantially greater than the paper’s primary pre-registered analysis comparing infant heart rate when listening to lullabies vs. non-lullabies (original effect size: d=0.23). Accordingly, the authors’ conclusion that infants relax more in response to unfamiliar foreign lullabies than to non-lullabies may be an artefact of their sampling methods.
The need for accessible mental health interventions for young adults in the COVID-19 pandemic: A student psychologists’ perspective and rapid systematic review
Authors: Antesberger Sophie , Blum Tabea , Böswald Raffaela , Brandl Hannah M. , Brenzinger Nele , Bunk Xenia , Carr Sinclair , Gans Judith , Gieg Romana , Hainke Laura , Hildebrand Jelena , Hulaj Dilan , Kemmer Natalie , Kustermann Julia , Martin Helena , Moll Josefine , Moultrie Josefine , Müller Armelle , Nafziger Carolin , Prebeck Julia , Rothfritz Alicia M.W. , Rosso Carlos Hevia , Rozek Robert P. , Sander Sophia B. , Schramm Leonhard Falk Florentin , Seifert Clara L. , Söder Jessica , Stratmann Markus W. , Knolle Franziska
Published: August 2021

Importance: Although young adults are on average less affected by the physical consequences of COVID-19 infections, showing less severe disease progression and lower mortality risk, they suffer strongly from the mental health impact of the pandemic.Objective: We, a group of psychology students experiencing these impacts, aim to provide an overview of the existing literature on prevention and intervention efforts to effectively reduce the development of, or suffering from, mental health problems in young adults (18-35) during the COVID-19 pandemic.Evidence Review: A rapid systematic review was conducted to identify studies focusing on the implementation of mental health interventions for young adults of the general population during the COVID-19 pandemic. Literature was searched with Pubmed and Web of Science on June 17, 2021. The quality of each study was assessed by two reviewers with the Standard Quality Assessment Criteria for Evaluating Primary Research Papers.Findings: Of N = 76 records initially screened, eight studies met the inclusion criteria. Six applied web-based interventions, of which four were randomized controlled trials. Interventions were based on Cognitive Behavioral Therapy approaches (n = 5), mindfulness practices, logo-autobiography, and synergistic thinking methods. The interventions varied in length from single sessions to multiple sessions over a period of up to 10 weeks. All interventions were effective in reducing depression and anxiety symptoms, as well as stress with small to medium effect sizes and a symptom reduction up to 78.9%. With only three studies being of high quality, the overall quality was low.Conclusions and Relevance: Research on mental health interventions for young adults in the general population during the pandemic is sparse. However, all interventions resulted in symptoms reductions and thus have been shown to be effective ways of counteracting the potential development of mental disorders during times of uncertainty, with high levels of stress, such as during a pandemic. Therefore, we propose a concept for an innovative and cost-effective web-based platform to structure and raise awareness for existing measures.
Individuals with developmental disabilities do make individual stylistic contributions to text written with physical facilitation
Authors: Nicoli Giovanni , Mitra Suvobrata , Pavon Giulia , Grayson Andy , Emerson Anne Elizabeth , Cortelazzo Michele
Published: August 2021

One approach to assisting linguistic expression in individuals with developmental disabilities is to physically assist them, for example by applying touch to their torso or arm, as they type characters on a keyboard or screen. There has been significant controversy over the extent to which the facilitator and not the user authors texts written with such assistance. It has been suggested that these texts are entirely the by-products of the facilitators’ unconscious and ideomotor cueing of the users’ movements towards the keyboard. Here, we use quantitative linguistic analysis techniques to investigate whether the texts produced by users with developmental disabilities exhibit their own stylistic contributions in addition to the influence of their facilitators. In Study 1, we investigate whether it is possible to identify a set of users’ stylistic fingerprints when they are all assisted by the same facilitator. In Study 2, we examine whether the users’ texts retain their individual stylistic characteristics even when the texts have been produced with the assistance of multiple facilitators. The results show that the users’ stylistic signature is detectable alongside that of their facilitator, suggesting that the texts generated by disabled users with physical assistance should be viewed as co-authored rather than wholly authored by the facilitators. The implications of these results for the users’ learning, development and quality of life are discussed.
The Impact of Systemic Inflammatory Response Syndrome (SIRS) and Sepsis Training on Pediatric Nurses
Authors: Mathema Smriti , Kayastha Pawana , Sharma Pushpa Raj
Published: August 2021

Introduction: Research demonstrates the importance of key interventions in reducing mortality rates of pediatric patients with sepsis. Of health care practitioners, nurses typically spend the most time with patients, and they must be knowledgeable in recognizing the SIRS and sepsis while also being aware of the importance of prompt intervention.

Aims: The purpose of this study is to assess the knowledge of pediatric nurses of SIRS and reassess their knowledge after a sepsis training program.

Methods: This time-series design study from February 2017 to February 2019 included 24 nursing staff involved in taking care of pediatric patients. The nurses were divided into two groups and they underwent a one-day training on sepsis. They were the evaluated periodically on their knowledge on pediatric sepsis at four different time points. The retention of knowledge was calculated based on the change in scores, as per mean numeric scores, immediately after the training compared to 12 and 24 months after the training. 

Results: In the thematic area ‘Early recognition of signs/symptoms of SIRS’ and ‘Assessment of application of knowledge’, there was a significant change (<0.001) from baseline in the mean scores once the nurses underwent training. The KAP assessment revealed a low total score of 14.5 out of 25 prior to the SIRS/Sepsis training There was a significant change (<0.001) in the mean knowledge score after the one-day training, 14.5 compared to 22.3, and the knowledge was retained 12 months after the training 19.2, whereas after 24 months post-training was 15.9.

Conclusion: There is an urgent need to train and constantly re-train our nursing staff to ensure their ability of to accurately and efficiently recognize sepsis and hence help prevent pediatric morbidity and mortality.
Teaching Tip: Designing Flipped Classrooms to Enhance Learning in the Clinical Skills Laboratory
Authors: Baillie Sarah , Decloedt Annelies , Londgren Molly Frendo
Published: August 2021

Flipped classroom is an educational technique in which content is delivered online for students to study at their own pace in preparation for in-class learning. Benefits include increased flexibility, enhanced student engagement and satisfaction, and more effective use of time spent during face-to-face teaching. However, the development and implementation of flipped classroom teaching are also associated with challenges, including time required to develop learning materials and getting students to engage with the preparatory work. This teaching tip describes a structured approach to designing and implementing the flipped classroom approach for clinical skills to allow a greater focus on practicing the hands-on skills and the provision of feedback during the laboratory session. First, the rationale for flipping the classroom and the expected benefits should be considered. On a practical level, decisions need to be made about what to include in the flipped component, how it will complement the face-to-face class, and how the resources will be created. In the design phase, adopting a structured template and aligning with established pedagogical principles is helpful. A well-designed flipped classroom motivates learners by including different elements such as quality educational media (e.g., videos), the opportunity to self-assess, and well-defined connections to relevant knowledge and skills. Student engagement with the flipped material can be promoted through different strategies such as clear communication to manage student expectations and adapting the delivery of the face-to-face component. Finally, gathering feedback and evaluating the initiative are important to inform future improvements.
The influence of layer height on the tensile strength of specimens printed in the FDM technology
Authors: Miazio Łukasz
Published: August 2021

This article analyzes the influence of layer height on the tensile strength of PLA specimens printed in the Fused Deposition Modeling (FDM) technology. The maximum breaking force of specimens with 30% and 100% infill density was determined at layer height of 0.05 mm, 0.1 mm, 0.2 mm and 0.3 mm. In the case of 30% infill, the highest value of the force was obtained for a layer with a height of 0.05 mm (which corresponds to 22.7 MPa), and for a 100% infill for a layer of 0.2 (which corresponds to 40 MPa). Over this layer height of 0.2 mm is the most polyoptimal due to the time prints and strength (which corresponds to 19.7 MPa).
Digital Games and the Exercise of Attention
Authors: Ribeiro Simone , Ramos Daniela , Mattar Joao
Published: August 2021

Digital games can be used to improve cognitive skills in schools, since they have rules, goals, challenges and propose actions that require the player’s attention, the use of problem-solving capacity, involving the planning of actions, keeping the goals and objectives in mind. Therefore, this article’s objective is to investigate indicators on the effects of the use of digital cognitive games in interventions carried out in small groups in the school context on the attention capacity. Therefore, a quasi-experimental study was conducted with 30 subjects, aged 7 to 11, which were divided into two groups, participant and control. Both were evaluated before and after the intervention through the application of a concentrated attention test. The results obtained indicated that the participant group had a significantly superior performance in relation to the quality of the attention because of less mistakes in the second application than the control group. The differences found in test variables that indicate the speed of discrimination of stimuli and attention more broadly were not significant.
Democratic Management in Times of COVID-19:
Authors: Carius Ana Carolina
Published: August 2021

This paper discusses the issue of educational management in a challenging scenario: the closing of Brazilian schools due to the COVID-19 pandemic. Through an exploratory research, in a documentary character, the articulating role that educational management has been developing together with the families of students was evaluated, with the aim to guarantee their access to remote activities during this period, and their maintenance and organization by part of higher departments. Under the clipping of two official documents of the state of Rio de Janeiro, Deliberation No. 376 of the State Council of Education of the state and Resolution No. 5843 of the Secretary of State for Education, it was possible to identify a greater concern with access to content, either through technological mediation or printed material and with “supervision” of teachers and students, to the detriment of strengthening aspects relevant to democratic and participatory management. No references to management or direction were found in the documents under analysis, nor ways to consolidate the participation of all actors involved in the teaching-learning process. The absence of dialogicity with all parties led us to a traumatic and exhausting process for everyone involved. Therefore, the need to rethink the pedagogical practices involved in this pandemic period is discussed, based on the difficulties listed by students, families, teachers and managers, in order to consolidate the contribution of all, in a democratic way, even if there is no social interaction between those involved at the time.
Impact of Cyberbullying Behavior on the Self-Esteem among Secondary and Higher Secondary School Students in Punjab, Pakistan
Authors: Perveen Fouzia , Ali Asghar , Ramzan Muhammad
Published: August 2021

The internet users are more than four billion globally. The fast advancement in electronic technology caused an unpredictable variation in the development of students. The use of the internet has become the backbone of education and communication. The current study sets out to measure the impact of cyberbullying on the selfesteem among secondary and higher secondary school students in nine districts of Punjab, Pakistan were selected. The total sample size comprised of 3236 (1614 male 1622 female) students, and their ages were 13-19 years, recruited through conveniently sampling. Two questionnaires were employed in the present research for the purpose of data collection; Cyberbullying Scale and Rosenberg Self-Esteem Scale. The data were analyzed through Statistical Package for Social Sciences (SPSS 23.0). The quantitative results revealed that cyberbullying was significantly (p < .01) positively correlated with self-esteem. Further, linear regression results showed that cyberbullying was a significant impact on self-esteem. Results also showed the comparison between male and female samples for cyberbullying on the self-esteem, and results of the comparison showed that the mean of cyberbullying was selfesteem was significantly higher among female students than male respondents. The limitations of the results are discussed.
Pattu: The Dying Fabric Making Art of Baltistan
Authors: Haider Sarwat Halima , Masood Afsheen , Kalsoom Samia
Published: August 2021

The traditional Balti dresses were made with a beautiful material, "Pattu". We conducted a survey regarding the procedure of pattu making in Baltistan. The data was collected through in-depth interviews of 30 personnel who were associated with pattu making art. Thematic analysis has been adopted to examine the responses. Pattu fibre was obtained from sheep next convert into yarn and then into the fabric. Pattu was dyed with the help of leaves and fruits. Pattu was used in garments, caps, shawls and carpets. It is the need of time to work on the revival of this dying art of making pattu with new innovations to improve the procedure and speed of making fabric. This study will provide knowledge to our new generations about traditional fabric which helps them build a strong bond with the culture. Bringing the skilled persons from Baltistan on the front line and create economic opportunities for them.
First documented case of intracranial falcine malignant peripheral nerve sheath tumor: illustrative case
Authors: Galzio Renato J. , Del Maestro Mattia , Pagkou Diamantoula , Caulo Massimo , Asioli Sofia , Righi Alberto , Fabbri Viscardo Paolo , Luzzi Sabino
Published: August 2021

BACKGROUND

The authors reported the first documented case of intracranial extraaxial nonneurofibromatosis type 1–related nontriton malignant peripheral nerve sheath tumor (MPNST) originating from the falx cerebri.

OBSERVATIONS

A 34-year-old man with headache, short-term memory deficit, postural instability, and blurred vision presented with a large heterogenous contrast-enhanced intraventricular cystic lesion originating from the free margin of the falx cerebri. The patient received surgery using the right posterior interhemispheric approach. Gross total resection was performed, and the inferior border of the falx cerebri was resected. The postoperative course was uneventful. Histological examination revealed hypercellular foci of neoplastic spindle cells with hyperchromatic and wavy nuclei. Hence, a diagnosis of MPNST was made based on concomitant immunochemistry findings, including mouse double minute 2 homolog focal positivity and geographic loss of H3K27me3. The patient received adjuvant radiotherapy, and recurrence was not observed.

LESSONS

Intracranial MPNSTs are extremely rare tumors, typically originating from the cranial nerves in the posterior cranial fossa. An even rarer variant of these tumors, referred to as malignant intracerebral nerve sheath tumors, may directly arise from the brain parenchyma. The authors reported the first case of an intracranial MPNST originating from the dura mater of the falx cerebri, acting as an extraaxial lesion with prevalent expansion in the right ventricle.
Cardiology Fellowship Training One Year into COVID 19 Pandemic: The Philippine General Hospital Experience
Authors: Evangelista Lauren Kay M. , Maramara Marie Kirk Patrich A. , Agustin Ruth Divine , Magno Jose Donato A. , Punzalan Felix Eduardo R.
Published: August 2021

The previous year, 2020, was one challenging year for everyone, most especially to the healthcare workers. We experienced a pandemic no one ever imagined that would happen in our lifetime. Medical frontliners, the People Giving Hope, were called and were given the responsibility of taking care and defending the patients from the unfamiliar enemy, the COVID 19 virus. With the changes brought about the pandemic, transformation of the cardiology fellowship training also happened. Three Cardiology fellows in training gives us a sneak peek of how the pandemic affected their lives after a year of battling the virus. KEYWORDS Covid 19, Cardiology, Training
Comparison of impact of synchronization protocols applied to ewes on pregnancy rate in Turkey with bayesian meta-analysis
Authors: MAT Burak , POLAT Murat , ÖZEL Zeynep , DEMİRSÖZ Mert
Published: August 2021

The present study carried a meta-analysis of the pregnancy rates of different synchronization protocols implemented in ewes in Turkey. A common pregnancy rate was estimated by coalescing pregnancy rates, and the heterogeneity between the studies was explored. All studies were carried out independently. This article compiled 28 studies that determined the pregnancy rate for 2,437 ewes in the synchronization studies between the years 1995–2020. The overall effect size of the meta-analysis was found to be 0.66 (95% confidence interval; 0.58–0.74) (p
SELF-CLEANING FILTER FOR CLOSED HYDROSYSTEMS OF AGRICULTURAL EQUIPMENT
Authors:   Vinnytsia National Agrarian University, STADNIK M. , VIDMYSH А. ,   Vinnytsia National Agrarian University, SHARGORODSKIY S. ,   Vinnytsia National Agrarian University, V. RUTKEVYCH  ,   Vinnytsia National Agrarian University
Published: August 2021

The issue of increasing the reliability and durability of hydraulic units of closed hydraulic systems of agricultural equipment is considered, due to better cleaning of the working fluid by filtration units. The design of a self-cleaning filter with hydraulic automatic control of backwashing of slotted filtration elements with a counterflow of the working fluid is proposed. A special stand has been developed for simulating the operation of a self-cleaning filter of closed hydraulic systems of agricultural equipment. Experimental studies on a special stand confirmed the efficiency of the proposed design and made it possible to identify its main advantages in comparison with domestic and foreign counterparts. Based on the analysis of transient processes with increased pressure pulsation of agricultural equipment of a closed hydraulic drive, the actual pressure drop at which automatic flushing is triggered was established, compared with the calculated one, in which it was impossible to take into account such real factors as friction in the sealing units, the characteristics of the springs, distortions, tightness of valve pairs, fluctuations in dimensional chains. The most optimal operating mode of auto-washing equipment with a choke diameter of 1.0 mm has been determined. The auto-washing equipment was switched on at a pressure drop of 1.5 MPa (15 atm) and in an improved mode – pressure pulsations with an amplitude of 2 MPa (20 atm) when the auto-wash was turned off decreased in time to 0.12 s. It is noted that the developed self-cleaning filter for closed hydraulic systems of agricultural equipment will improve the reliability and increase the service life of the elements of hydraulic units and the machine itself as a whole.
SYSTEM OF ADAPTIVE FREQUENCY CONTROL OF SPEED OF ROTATION OF THE ASYNCHRONOUS THREE-PHASE ELECTRIC MOTOR OF THE ROTOR CRUSHER DRIVE
Authors:   Khmelnytskyi National University, SKYBA МYKOLA , MISIATS OLEKSANDR ,   Khmelnytskyi National University, POLISHUK A. ,   Khmelnytskyi National University, MISIATS VOLODYMYR , RUBANKA MYKOLA ,   Kyiv National University of Technologies and Design
Published: August 2021

The analysis of a design and the principle of work of modern rotary crushers for crushing of waste of polymeric materials is carried out. Ways of possible improvement of the existing equipment for crushing of waste of polymeric materials are defined. The principles of automation of the rotary crusher drive are formulated. The structural scheme of the frequency control system of the rotor crusher drive is developed. The analysis of operation of asynchronous three – phase motors at frequency control of speed of rotation is carried out. The mechanical characteristics of the electric drive of the rotary crusher are determined. The methodological and theoretical bases of the study are the main provisions of strength of materials, theoretical mechanics and the theory of electric drive. The paper for the first time uses a comprehensive approach to the study of the grinding process of polymeric materials, which takes into account the dependence of their physical and mechanical properties on the conditions of the process, as well as kinematic and electrical characteristics of the equipment. The object of research is the technological process of mechanical grinding of light industry waste in rotary crushers. The subject of the study is the electric drive of a rotary crusher for processing polymer waste. The expression for calculation of mechanical characteristics of asynchronous electric motors according to their passport data is received that allows to calculate modes of work of drives of crushers at various power frequencies and various control laws. The use of frequency control of the electric drive of the rotary crusher for the processing of waste polymeric materials from light industry will increase the reliability of its operation. The research results can be used in the design of new and modernization of existing structures of rotary crushers for grinding waste polymeric materials.
STUDY OF A FREQUENCY OUTPUT TEMPERATURE SENSOR BASED ON A QUANTUM HETEROSTRUCTURE WITH A NEGATIVE DIFFERENTIAL RESISTANCE
Authors:   Vinnytsia National Technical University, OSADCHUK A. , OSADCHUK V. ,   Vinnytsia National Technical University, OSADCHUK O. ,   Vinnytsia National Technical University
Published: August 2021

Physical processes in a quantum two-barrier heterostructure, which is the basis for the development of tunnel-resonant diodes, are considered. These studies have shown that tunnel resonance diodes can be used as temperature sensors with a frequency output signal. The use of devices with negative differential resistance makes it possible to significantly simplify the design of temperature sensors in the entire radio frequency range, at which, depending on the operating modes of the sensor, an output signal can be obtained both in the form of harmonic oscillations and in the form of impulse oscillations of a special form. The study of the characteristics of the sensor is based on the equivalent circuit of the tunnel-resonant diode, which takes into account its capacitive and inductive properties. The current-voltage characteristic of the sensor has a falling section, which is responsible for the appearance of a negative differential resistance in this section. The descending section arises due to a decrease in the current that flows through the double-barrier quantum heterostructure, with an increase in voltage. A decrease in the current occurs due to a decrease in the transparency coefficient of the potential barriers of the heterostructure. A mathematical model of the temperature sensor has been developed, on the basis of which the analytical dependences of the change in the elements of the equivalent circuit of the sensor on temperature, as well as the transformation function and sensitivity, have been determined. It is shown that the main contribution to changes in the conversion function and sensor sensitivity is made by the change in the negative differential resistance with a change in temperature. This, in turn, results in different readings of the instrument’s output frequency. The sensor sensitivity was varied from 480 kHz/0С to 220 kHz/0С in the temperature range from -150 0С to 50 0С.
INVESTIGATION OF SIGNAL DISTURBANCE OF THE SIGNAL AT THE INPUT OF THE MOBILE STATION RECEIVER WITH DIFFERENT CHARACTERISTICS OF BASE STATIONS IN THE CONDITIONS OF CITY BUILDING
Authors:   Khmelnytskyi National University, LUZHANSKY V. , V. KARPOVA L. ,   Khmelnytskyi National University, POVKH A. ,   Khmelnytskyi National University
Published: August 2021

The purpose of the scientific paper is to study the effects of internal system interference caused by the movement of a mobile station in the cell of the service area, which involves the use of the same frequencies, which worsens the communication conditions. The article provides calculation formulas for determining the signal-to-noise ratio at the input of the receiver of the mobile station. Calculations, including tables and figures, for different characteristics of base stations (BS) of the mobile network are also given. The analysis of literature sources shows insufficient depth of the conducted researches in directions for improving the noise immunity of the signal under different conditions in particular: city development, terrain, interference from other base stations. The use of radio networks with moving objects makes it possible to repeatedly use the same dedicated frequency band to increase the speed of digital information transmission and economical use of the frequency range. This method has a significant disadvantage, which is the presence of mutual internal system interference between base and mobile stations that use the same frequency range. The purpose of the scientific article is to study the noise immunity of the signal at the input of the receiver of the mobile station at different characteristics of the base stations in terms of urban development
DEVELOPMENT OF THE METHOD OF NON-DESTRUCTIVE QUALITY CONTROL OF HARDENED CYLINDER SLEEVE OF AUTOTRAKTOR EQUIPMENT
Authors:   Vinnytsia National Agrarian University, BRATSLAVETS B.
Published: August 2021

The main part of tractor engines is the cylinder liner, which depends on the life of the machine as a whole. It is made of gray cast iron (SCh20 DSTU 1412-85) with the addition of alloying elements and subjected to the working surface of HDTV hardening. Now quality control is carried out by destructive methods (assessment of hardness, durability, structure) on specially cut templates on 1 piece. from a party to 80-100 pieces of each melting. Such control does not ensure the reliability of products, both in the quality of the base metal and heat treatment. The solution to this problem is possible by developing non-destructive quality control of each product in different periods of the process process with assessment of the properties and stress level of both the base metal (corresponding to the outer surface) and the hardened layer (inner working surface). The intensity of cylinder wear depends on the conditions of friction of the cylinder-piston ring, which are affected by the design features of the engine (power, speed, compression ratio, cooling system, as well as fuel supply and combustion, air and oil purification system), quality of fuel and oil, operating conditions and wear resistance of the cylinder material. Wear of cylinders during friction paired with a piston ring during engine operation occurs as a result of a combination of many processes occurring simultaneously: destruction of microprojections of surfaces that are destroyed by repeated plastic deformation during engagement, as well as the destruction of tired origin; setting of the material of the microprojections with subsequent deep tearing of the metal particles during the destruction of the setting unit; accumulation of abrasive particles that contribute to the intensification of wear; abrasive action of dust particles, contribution products, solid inclusions on the surface of collapsing bodies; chemical corrosion under the influence of high temperatures of gaseous products of fuel combustion; electro-chemical corrosion from the action of acids formed during the dissolution of gaseous products in condensed water vapor on the walls of the cylinders.
MEASUREMENT OF NARROWBAND RESISTANCE FREQUENCY RADIO SIGNAL OF LIMITED DURATION
Authors:   Vinnytsia National Technical University, BARAS S. , KRUPELNITSKYI L. ,   Vinnytsia National Technical University, ONYSCHUK O. ,   Vodafone Ukraine
Published: August 2021

The work concerns analog-digital systems that work with radio signals emitted and received by the antenna, and these signals have a limited duration, ie are pulsed. The propagation conditions of such signals and the processes of formation of echo signals affect their amplitude, frequency and phase characteristics in such a way that they form classical narrowband signals. The operation of the system involves the determination of certain parameters of echo signals, and taking into account their pulse nature for such a definition is given a limited time interval. This means that the procedure for determining the parameters must meet the criterion of high speed, and therefore differ from the traditional, built on the use of phase-locked loop. The article is devoted to solving the problem of measuring the reference frequency of a pulsed narrowband radio signal. By analyzing the results of experimental studies, two types of errors in measuring the reference frequency of a narrowband radio signal were identified and the causes of their occurrence were established. These errors are provoked by the peculiarities of the structure of the narrowband signal. The reason for the error of the 1st type, the absolute value of which correlates with the duration of the half-cycle of the reference frequency, is the so-called phase jumps at the point of change of the sign of the bypass. The frequency of such errors within the duration of the echo signal is generally low, although it increases with increasing signal spectrum width. Type 2 errors occur due to the appearance of zones with almost completely suppressed signal amplitude, which may be the result of intrapulse interference and / or signal attenuation. Such errors also occur more often if the spectrum width is larger. A method for measuring the reference frequency of a narrowband pulsed radio signal is proposed, which is based on counting the number of half-cycles of the reference frequency on a time-limited measurement interval and removing from this procedure areas with completely suppressed signal amplitude. An auxiliary highly stable reference frequency is used to establish the numerical value of the reference frequency. The block diagram of the frequency meter and the algorithm of its operation are given, the implementation of which avoids these errors.
WAYS TO USE NEURAL NETWORKS AND MACHINE LEARNING IN COMPUTER GAMES
Authors:   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Seniva K.
Published: August 2021

This article discusses the main ways of using neural networks and machine learning methods of various types in computer games. Machine learning and neural networks are hot topics in many technology fields. One of them is the creation of computer games, where new tools are used to make games more interesting. Remastered and modified games with neural networks have become a new trend. One of the most popular ways to implement artificial intelligence is neural networks. They are used in everything from medicine to the entertainment industry. But one of the most promising areas for their development is games. The game world is an ideal platform for testing artificial intelligence without the danger of harming nature or people. Making bots more complex is just a small part of what neural networks can do. They are also actively used in game development, and in some areas they already make people feel uncomfortable. Research is ongoing on color and light correction, real-time character animation and behavior control. The main types of neural networks that can learn such functions are considered. Neural networks learn (and self-learn) very quickly. The more primitive the task, the faster the person will become unnecessary. This is already noticeable in the gaming industry, but will soon spread to other areas of life, because games are just a convenient platform for experimenting with artificial intelligence before its implementation in real life. The main problem faced by scientists is that it is difficult for neural networks to copy the mechanics of the game. There are some achievements in this direction, but research continues. Therefore, in the future, real specialists will be required for the development of games for a long time, although AI is already coping with some tasks.
Modelling of transparency of Lake Baikal inferred from the Sentinel-2 Data
Authors: Boldanova E.V. ,   Baikal State University, Lenin Str., 11, Irkutsk, 664003, Russia
Published: August 2021

Abstract. The remote sensing methods usage makes it possible to increase the accuracy and efficiency of data on the state of water bodies. Among the many satellite systems, Sentinel-2 is the most suitable for inland water assessment. One of the abiotic factors in assessing the trophicity of water bodies is the transparency along the Secchi disk. Models for calculating water transparency have been developed for individual water bodies. The analysis showed that these models don t adequately describe the transparency for Lake Baikal. Based on the correlation-regression analysis, the parameters of the exponential function were estimated for calculating the transparency of the surface waters of Lake Baikal using the values of the Sentinel-2 spectral channels. Despite the inaccuracy of the model for assessing the transparency in the coastal zone, it can be used to assess the seasonal and interannual transparency of the surface waters of Lake Baikal.
Composing aromanticism
Authors:   , Bougie C.
Published: August 2021

The term "aromantic" describes those who experience little to no romantic attraction to other people, marking a queer identity hardly referenced in either scholarship or popular conversation. Aromanticism's obscurity doesn't only render it difficult for aromantic people to communicate to those who don't identify or aren't familiar with the term -- it also often leaves aromantics themselves uncertain as to how they might put their perspectives and experiences to words (much less music, visual art, and so on). In this thesis, I suggest that both the aromantic community and composition studies might benefit from some manner of allyship or collaboration with each other. While scholars of queer composition have been publishing exciting work for the past several decades on queering form and genre, writing pedagogy, even how success or failure in composing can be imagined as a whole, their scholarship has yet to either acknowledge the aromantic community's presence or incorporate some of its viewpoints. Following such scholars as Jonathan Alexander, Jacqueline Rhodes, and Stacey Waite, I wonder how queering composition might look different if aromanticism were incorporated into it. To do so, I share from my own aromantic experiences and compositions as well as offer overviews on the contemporary aromantic community and composition studies' queer table. The resulting project is a collage of research and something like prose poetry (not to mention drama and visual art), itself a text that takes a hopeful stab at queering form, queerly content as to whether it might succeed or fail in its genre.
The use of shape and color theory in interpreting character traits
Authors:   , Henderson Curtis
Published: August 2021

Video games are richly ingrained in the world's media culture. Video games are rapidly growing their audience reach through new technological advances and innovative interactive engagement. Characters that create powerful social and emotional connections with players throughout the gameplay are essential for a video game's success. However, character design and interaction principles do not seem to be widely understood within the game development community. This paper analyzes the theory of how people perceive shape and color and then applies these beliefs to personally designed characters that I created. When speaking of shape, I am referring to the actual geometric dimensionality of an object, such as a circle, square, or triangle. When speaking of color, I am referring to the full-color spectrum in an artist's palette, such as blue, indigo, and violet, etc. This study reports the findings of previous research concerning video game character design. It then provides a new research plan for a qualitative study to attempt to design characters that evoke intended emotions with their audience. It also presents a full questionnaire with new unique character designs that will be distributed to the public in the future. The overall goal of this research is to build a better picture of what character designers should include to resonate with their intended audience successfully.
Synthesis and characterization of TiO2 nanotube Schottky diodes
Authors:   , Michaels Mach Robert
Published: August 2021

Metal-semiconductor interfaces on one-dimensional (1D) nanostructures represent crucial building blocks for next-generation nanoelectronics. Over the past two decades, chemically synthesized titanium dioxide nanotubes (TiO2-NTs) have gained a considerable amount of interest due to their high specific surface areas, tunable geometries, and favorable electrical properties. Explored for a variety of applications such as solar cells, hydrogen production, memristors, and batteries, TiO2 is a transition metal oxide material that contains unique wide-bandgap semiconductor properties. This research seeks to fabricate a conformal, rectifying metal-semiconductor interface, or Schottky junction, throughout an ordered array of semiconducting nanotubes. The atomic layer deposition (ALD) technique offers a precise, conformal growth mechanism and was used to deposit a continuous platinum (Pt) Schottky contact throughout the inner walls of the TiO2-NTs. Any defects found in the nanotubes, such as cracks, led to Pt atoms reaching all areas, forming an electrical short between the anode and cathode. To address this issue, initial experiments were centered on synthesizing defect-free, ordered TiO2-NT arrays using electrochemical anodization as it offers precise geometric control over the NT growth. Fabrication parameters, such as anodization time, electrolyte concentrations, and annealing environments, were investigated until the resulting NTs were free from structural defects. Demonstrated with low vacuum annealing, oxygen vacant, nonstoichiometric TiO2 was synthesized and investigated as a diode material. By comparing the current-voltage characteristics between stoichiometric and nonstoichiometric TiO2 diodes, we find that the oxygen vacant, nonstoichiometric TiO2 diodes displayed an improved ideality factor from 3.7 to 2.4. A 350 [degrees] C post-fabrication thermal treatment, however, led to both stoichiometric and nonstoichiometric TiO2 diodes having similar ideality factors of 2.0 and similar shifts in trap concentration and depth. Nonstoichiometric TiO2 devices exhibited a unique shunt conduction regime after thermal treatment where the shunt resistance was found to be on the order of 105 [omega]. These results present valuable experimental observations into understanding the effects of oxygen vacancies in TiO2 and effectively modifying the electronic properties of a conformal Pt/TiO2 nanostructured junction using a facile post-fabrication thermal treatment.
Automated defense against targeted attacks using suspiciousness tracking
Authors:   , Neely Travis
Published: August 2021

Cloud ecosystems, technologies, and paradigms have transformed our world in recent years revolutionizing supply chains, healthcare, energy distribution, as well as our home functions. With everything in our lives so interconnected in these cloud systems, they are now prime targets for targeted attacks such as Advanced Persistent Threats (APTs). The targeted attacks lead to exposure of sensitive data (data exfiltration) as well as stolen computing resources (resource exfiltration). In this thesis, we present a novel methodology, which we call ADAPTs (Automated Defense of Advanced Persistent Threats), developed to assist in defending cloud systems against APTs. We show how ADAPTs can be extended to defend against other targeted attacks such as DDoS and cryptojacking. Using an open cloud testbed, we mimic multiple cloud systems, monitor network traffic between them, and generate a suspiciousness score for devices connected to said cloud networks. Using the suspiciousness scores, we demonstrate how we determine what work that device on the network is participating in, be it data exfiltration, resource exfiltration, or some other unwanted practice. Using these suspiciousness scores, we block the attacks while they are taking place and using pretense, continue to allow the attackers to believe their attack is successful. Our experimental results show how ADAPTs tricks attackers to continue to waste their own resources on an attack which is fruitless, while also protecting the targeted system by keeping the related services working as expected for actual users.