High-quality Performance Research Articles

НОРМАТИВНО-ПРАВОВЕ РЕГУЛЮВАННЯ ДІЯЛЬНОСТІ СЛУЖБИ ЗАБЕЗПЕЧЕННЯ ПАЛЬНО-МАСТИЛЬНИМИ МАТЕРІАЛАМИ: АНАЛІЗ ПРОБЛЕМНИХ ПИТАНЬ ТА ПРОПОЗИЦІЇ ЩОДО ЇХ ВИРІШЕННЯ

The article is devoted to the analysis of the state of regulatory and legal regulation of the activity of the fuel and lubricant supply service of the State Border Guard Service of Ukraine. The official duties of the officials of the fuel and lubricant supply service are determined by the Statutes of the Armed Forces of Ukraine, the order of the Administration of the State Border Guard Service of Ukraine dated June 24, 2008 No. 544 "On the approval of the Guidelines on the provision of fuel to the bodies of the State Border Guard Service of Ukraine", as well as the order of the Administration of the State Border Guard Service of Ukraine of the Border Service of Ukraine dated December 21, 2020 No. 134 "On the approval of the Advisor on military (ship) management of the State Border Service of Ukraine." The review of the regulatory legal support of the fuel and lubricant supply service of the State Border Guard Service of Ukraine made it possible to establish that the duties of the officials of the fuel and lubricant supply service include tasks related to: monitoring the quality and proper use of fuel, planning the necessary efficiency measures and feasibility of using and saving fuel; organization of maintenance, improvement and operation of fuel warehouses, filling stations and other subordinate fuel service facilities in accordance with current regulatory documents; ensuring proper use, maintenance and storage of technical means; organization and maintenance of accounting and reporting on fuel service; collection, delivery and proper use of spent oil products, etc. The procedure for performing these tasks must be regulated by relevant departmental acts. At the same time, the governing documents of the State Border Service of Ukraine and the Ministry of Internal Affairs of Ukraine do not define the procedure for performing the specified tasks. According to the authors, it is the task that regulates the order and conditions of storage of fuel and lubricant materials, special liquids at fuel warehouses and filling stations; tasks of fuel quality control; maintenance of technical means of the fuel and lubricant supply service are fundamentally important for the high-quality organization of the activities of state border protection units and must be regulated for the high-quality performance of official duties by officials of the State Border Service of Ukraine, who are assigned the tasks of organizing and managing the military (ship) economy.

MODERN MATERIALS FOR REPAIRING AIRFIELD SURFACES

The existing network of airfields is largely represented by hard airfield surfaces. The main advantage of this design of coatings is sufficient load-bearing capacity, which allows to ensure the operation of any type of aircraft and a significant resource, which is 20 years before overhaul. Given that most airfields have been in operation for more than 20 years, the issue of maintaining the technical condition of artificial surfaces becomes urgent. In difficult economic conditions, only ongoing repair work remains the only way to maintain the necessary level of technical condition of airfield surfaces, capable of ensuring the safe performance of take-off and landing operations, taxiing and maintenance of aircraft. This determines the need to improve the methods of their operational and technical maintenance. In addition, timely and high-quality performance of current repair work allows to extend the service life of the coating between repairs.

Separated Graph Neural Networks for Recommendation Systems

Automatic recommendation has become an increasingly relevant problem for industries, which allows users to discover items that match their tastes and enables the system to target items at the right users. Graph neural networks have attracted many researchers' attention and have become a useful tool for recommendation. However, these models face two major challenges, which are heterogeneous information aggregation and aggregation weight estimation. In this article, we propose a graph neural networks-based recommendation model, i.e., a separated graph neural recommendation (SGNR) model, which achieves high-quality performance. SGNR separates BINs in recommendation systems into two weighted homogeneous networks for users and items, respectively, resolving the heterogeneous information aggregation problem. In addition, a propagation coefficient estimation method is proposed, which combines parametric and nonparametric estimation strategies. And, it is constructed with three characteristics, which are collaborative, side-information constrained, and adaptive. Thereinto, a three-hierarchy attention operator is contained for feature fusion, which optimizes the feature aggregation process via a more sensible and flexible propagation mechanism. Experimental results on four public databases indicate that the proposed methods perform better than the state-of-the-art recommendation algorithms on prediction accuracy in terms of quantitative assessments and achieve readability and interpretability to some extent.

ОБҐРУНТУВАННЯ НЕОБХІДНОСТІ СТВОРЕННЯ МОБІЛЬНОГО КОМПЛЕКСУ УПРАВЛІННЯ БЕЗПІЛОТНИМИ ЛІТАЛЬНИМИ АПАРАТАМИ НА БАЗІ ШАСІ ВАНТАЖНОГО АВТОМОБІЛЯ

The conducted SWOT analysis made it possible to develop problematic issues that are proposed during the operation of unmanned aerial vehicles, proposals were made for the creation of a mobile complex of the use of unmanned aerial vehicles based on the chassis of a truck. Formulation of the problem. During hostilities, unmanned aerial vehicles (UAVs) were widely used. The massive use of the latest robotic (automated) weapons and military equipment on the battlefield is changing the nature of units' actions. Currently, almost every combat unit has a UAV application group. The high efficiency of their use is confirmed by high results on the battlefield. The security and defense forces of Ukraine are armed with dozens of types of UAVs for various purposes and with various capabilities for lifting cargo and carrying explosives. The use of UAV combat units in the field. Launches of lethal vehicles are carried out by hand or with the help of launch devices. With this mobile application group, the BPLA, although it is at a distance from the line of the next combat encounter, does not have sufficient security and protection from enemy fire. Preparation for use, maintenance of UAVs and charging of batteries in stationary conditions the day before, which reduces the efficiency of actions.The deployment of mobile groups of UAV operators is carried out on vehicles that are available to the military unit at the time, and which are not adapted for the high-quality performance of the combat mission by the group. UAV operators and equipment are not protected from exposure to low ambient temperatures and have no protection from small arms and shrapnel damage. Time indicators of deployment on the terrain of the complex for launching UAVs and folding after the completion of a combat mission need improvement. Analysis of recent research and publications. Scientific studies on improving the actions of units equipped with UAVs were carried out in the National Guard even before the beginning of the full-scale invasion of the Russian Federation. For example, in [1-2], data are given regarding the need for intelligence information and the development of a rational procedure for the use of intelligence unmanned aerial vehicles. In [3], the methodological apparatus for researching the problems of using information technologies and telecommunication systems in the process of military management is presented. The purpose of the article is to justify the need to create a mobile complex for the use of unmanned aerial vehicles based on a truck chassis. Provide recommendations on the creation of a mobile complex for the use of unmanned aerial vehicles.

VAB 모델을 적용한 e스포츠 관람객의 경기 선택속성과 관광행동의도 간의 관계 연구

This study attempted to analyze the decision-making structure of e-sports competition visitors by applying the VAB model to examine the effect of e-sports competition viewing on local tourism intention at the venue. As a result of the analysis, it was confirmed that the attitude toward e-sports games had a positive effect on tourism behavioral intention. It was confirmed that the selection attribute of e-sports games enhances the attitude toward the venue and has a positive effect on tourism behavioral intention. The conclusion based on the analysis results is that first, e-sports visitors are found to have high loyalty, so it is worth using as content for the tourism industry. Second, various marketing methods are needed to attract tourists from e-sports clubs. In conclusion, in order to revitalize e-sports tourism, high-quality performance, high-access stadiums, pleasant facilities, and active marketing should be carried out.

Prospects for the development of the logistics system and its structural elements

The purpose of the study is to carry out a critical analysis of the elements of the logistics system of a modern enterprise, identify their functional characteristics and connections, and develop proposals for the stages of forming an improved model of the logistics system. The article highlights the issues related to the specifics of the formation of an effective logistics system of the enterprise by its constituent elements. It has been proven that the modern design of the logistics system should have not only traditional, but also innovative elements for high-quality performance of logistics functions. On the basis of the conducted analysis, the use of the graphic method and generalization, the relevant structural elements of the logistics system were identified. The role of the stimulating function of management in the matter of encouraging logistics workers to perform their duties in a high-quality manner is defined. In this context, the experience of Poland is given as an example. Comparing the salary level of employees at different levels of procurement and logistics departments, identifying the advantages of their functional powers and status made it possible to develop directions for improving internal and external relations to ensure mutual positive influence and achieve the effect of synergy. Taking this into account, a scheme of stages of the formation of an improved logistics system has been developed. Based on the results of the analysis, a conclusion was made regarding the expediency of using traditional and innovative logistics tools, as well as modern dominants associated with the use of technical achievements. The application of the author's proposals will make it possible to form a high-quality logistics system of a modern enterprise on a practical level. This will ultimately have a positive effect on the management of logistics processes and ensure better efficiency and effectiveness of the enterprise.

On the Formation of Professionally Specialized Competencies and Training of Specialists and Managers in the Pharmacovigilance System of the Marketing Authorization Holder

Introduction. The key role in the organization of the pharmacovigilance system is played by the Marketing Authorization Holder (MAH), who monitors the safety and effectiveness at all stages of the life cycle of drugs, the need for which is determined by regulatory documents in the field of pharmacovigilance. The possibility of ensuring the required quality of the processes and the results obtained in the pharmacovigilance system of the MAH is directly related to the availability of a sufficient number of competent, qualified and trained personnel in the units that closely interact in the pharmacovigilance system of the MAH, which necessitates the formation of appropriate competencies for the implementation of procedures provided for when identifying changes in the safety profile of drugs. An integral part of the formation of competencies of employees and departments involved in the pharmacovigilance system of the MAH is training according to a specially developed program and evaluation of its effectiveness.Aim. Substantiation of the formation of professionally specialized competencies and training of employees in the pharmacovigilance system of the MAH.Materials and methods. The research materials were the results of the works of domestic scientists, data from their own research and regulatory legal acts regulating pharmacovigilance in the Russian Federation, the EAEU. Methods of sociological, logical analysis, and interactive learning were used as research methods.Results and discussion. The necessity has been established and the professionally specialized competencies of managers and specialists of the MAH in the pharmacovigilance system have been formed, for the mastery of which an educational program has been developed and training has been conducted. Information and methodological support of personnel has been introduced.Conclusion. In the course of the conducted research, it was found that training is an integral part of the organization of an employee's independent workflow. In order to achieve high-quality performance of processes and tasks related to pharmacovigilance, it is necessary to have a sufficient number of competent and trained personnel in the MAH. In order to update the acquired knowledge on pharmacovigilance, it is advisable to carry out intra-corporate training with a certain frequency.

LEGAL REGULATION OF THE CIVIL SERVICE IN THE USSR IN THE 20S OF THE XX CENTURY

Introduction. The effectiveness of the state's performance of its functions, ensuring the rights of citizens largely depends on the high-quality performance of official duties by civil servants. That is why the study of legal regulation of the conditions of public service in different historical periods is characterized by relevance. The purpose of the study is to establish the peculiarities of the legal regulation of civil service in the USSR in the 20s of the XX century. The source base for the study of the problem is the regulatory legal acts of the Ukrainian SSR, which regulated the legal status of the civil servant in the period under study. Summary of the main results of the study. At the beginning of the 20s of the 20th century, the civil state service was militarized. The conditions of civil state service were determined according to the legislation and by-laws, which regulated conditions of service for military personnel. Since 1922, the Code of Labor Laws of the USSR and the Provisional Rules on Service in State Institutions and Enterprises of the USSR became the legal basis for service. Measures of social protection of civil servants were determined according to the norms of labor legislation. The payment conditions of civil servants were defined in separate resolutions of the government of the USSR. Peculiarities of the criminal responsibility of civil servants for committing official crimes in the early 1920s were determined by the norms of separate resolutions of the government of the USSR. Separate chapters on responsibility for official crimes were provided for in the criminal codes of the Ukrainian SSR of 1922 and 1927. Civil servants were subject to disciplinary responsibility by the decision of a disciplinary court established by a trade union or district executive committee. Subsequently, the right to apply disciplinary sanctions was obtained by the direct superiors of the civil servant. Conclusions. During the studied historical period, no separate legislative act was adopted in the Ukrainian SSR that would comprehensively regulate the specifics of public service and social protection of civil servants. The legal status of a civil servant was determined on the basis of labor law norms.

A Scientific view and analysis of theatre art Yakshagana

Many of the Indian performing arts have deep scientific/engineering aspects involved in them without being recognised or studied. Yakshagana is one of such arts being performed in coastal districts of Karnataka and has a history of more than 500 years. Yakshagana is a team, multidisciplinary art involving classical music, percussions, dance, dialogue, comedy, costumes, and scholarly discussions. This article discusses the components/parameters of the Yakshagana art form from a scientific and engineering perspective, and we have attempted to formulate mathematical equations for a better understanding of the art execution, artist’s capacity and overall performance. Empirical mathematical relations are formulated to estimate the performance index to grade the quality of the overall performance of the day. As art is an “all-in-one” form of art performance, it is represented using a Venn diagram. Four main components of Yakshagana and the importance of the coordination between them for successful, cohesive and high-quality performance are analysed by incorporating scientific and engineering approaches. We hope that the present study will open up further scientific research on long-duration performing Indian traditional art forms

Design of Tunable Liquid Crystal Lenses with a Parabolic Phase Profile

An electrode pattern design generating a parabolic voltage distribution, in combination with usage of the linear response range of the liquid crystal (LC) material, has been recently proposed to obtain nearly ideal phase profiles for LC lenses. This technique features low driving voltages, simple structure, compact design, and the absence of high-resistivity (HR) layers. In this work, the universal design principle is discussed in detail, which is applicable not only to LC lens design, but also to other LC devices with any phase profile. Several electrode patterns are presented to form a parabolic voltage distribution. An equivalent electric circuit of the LC lens based on the design principle is developed, and the simulation results are given. In the experiments, an LC lens using the feasible parameters is prepared, and its high-quality performance is demonstrated.

ESG performance and corporate value: Analysis from the stakeholders’ perspective

Based on the panel data of China’s A-share non-financial listed enterprises from 2011 to 2020, we empirically explore whether EGS performance can significantly promote corporate value and how to promote it, from the stakeholders’ perspective. We find that: 1) ESG performance significantly improves corporate value. 2) Both media attention and analyst coverage play an intermediary role in the impact of ESG performance on corporate value. 3) Further analysis of the single dimension of ESG illustrates that Environmental (E) and Social (S) have a positive impact on corporate value, but the effect size of Social (S) is smaller, and there is no evidence for a significant relationship between Governance (G) and corporate value. 4) The heterogeneity analysis shows that ESG performance of non-heavily polluting enterprises has a significant positive effect on corporate value, but not on heavily polluting enterprises. Meanwhile, ESG performance of enterprises with a low percentage of institutional investor ownership has a significant positive effect on corporate value, but not with a high percentage. Overall, our study shows that high-quality ESG performance triggers the attention of media and analysts, which in turn promotes corporate value by raising stakeholder pressure. We also analyze the possible causes of heterogeneous results from the perspective of stakeholders, and put forward reasonable suggestions to promote ESG performance and corporate value, as well as protect the interests of stakeholders.

The Influence Of Workload, Work Conflict And Work Stress on the Performance Of Sprinter Employees at PT Garuda Express Nusantara in Pekanbaru

The progress of a company is very dependent on the human resources it has. Although the various factors needed are available, without the role of humans in it, the company will not be able to operate properly. The quality of employee performance is the main factor and determinant of the success of a company. An employee who has qualified abilities and can act well in certain situations and conditions is an achievement for employee performance. The main benchmark in evaluating the performance of an employee is the ability he/she has. How an employee can accept the workload, understand work conflicts and deal with work stress that is experienced, can indicate the high or low quality of employee performance. The respondents in this study were employees of the sprinter department (courier) at PT Garuda Express Nusantara (J&T Express) Pekanbaru, which was located on Harapan Raya Street. The population in this study was 240 employees and the entire population was sampled using a saturated sampling technique. The analysis technique used was descriptive quantitative. The results of the study conclude that workload, work conflict, and work stress influences the performance of sprinter employees at PT Garuda Express Nusantara (J&T Express) Pekanbaru with an Adjusted R Square value (Coefficient of Determination) of 0.858. It means that the influence of the independent variable (X) namely workload, work conflict, and work stress affects the dependent variable (Y), namely employee performance of 85.8%. Meanwhile, the remaining 14.2% is influenced by other variables which not included in this study

Study of chattering suppression for the sliding mode controller of an electromagnetic levitation system

Due to the inherent non-linearity and open-loop instability of maglev systems, their high-quality control performance is critical in the development stage. Sliding mode control has great potential in the field of maglev vehicle control because of its superior control performance, robustness and interference resistance. In practical applications of sliding mode control, however, the limitations of the hardware physical properties and time delay of the control units of maglev systems can cause chattering, thereby significantly reducing the stability of maglev vehicles. In order to suppress chattering, a modified sliding mode controller that combines the exponential reaching law and continuous control laws is proposed in this study. A single-point levitation experimental platform and corresponding co-simulation model were built, and a parameter influence analysis of the modified sliding mode controller was conducted. This paper presents an adaptive correction method for the sliding mode control parameters based on the aforementioned chattering study. The actual levitation experiments were used to validate the control performance of the proposed controllers. Overall, the conducted research revealed that the modified controllers could effectively suppress chattering and possess excellent robustness.

F-divergence regression models for compositional data

The paper considers the class of $f$-divergence regression models as alternatives to parametric regression models for compositional data. The special cases examined in this paper include the Jensen-Shannon, Kullback-Leibler, Hellinger, chi^2 and total variation divergence. Strong advantages of the proposed regression models are a) the absence of parametric assumptions and b) the ability to treat zero values (which commonly occur in practice) naturally. Extensive Monte Carlo simulation studies comparatively assess the performance of the models in terms of bias and an empirical evaluation using real data examining further aspects, such as predictive performance and computational cost. The results reveal that Kullback-Leibler and Jensen-Shannon divergence regression models exhibited high quality performance in multiple directions. Ultimately, penalised versions of the Kullback-Leibler divergence regression are introduced and illustrated using real data rendering this model the optimal model to utilise in practice.

From Balaclavas to Ballyhackamore: Scott's Jazz Club, Belfast, Northern Ireland

From Balaclavas to Ballyhackamore: Scott's Jazz Club, Belfast, Northern Ireland

Sumav: Fully automated malware labeling

Multiple AV engines are used to ensure more effective system protection against malicious files. These AV engines are capable of distinguishing between benign and malicious files, but even if a file of interest is proven to be malicious, it is still necessary to refer to a list of AV labels provided by each AV engine to determine what family name the malicious file belongs to. However, oftentimes, such AV labels lack a consistent naming scheme, and even family names differ from one AV engine to another. The present study presents Sumav, a fully automated labeling tool that assigns each file a family name based on AV labels. According to previous studies, such a task required prior knowledge or malicious file datasets that had already been labeled. In contrast, Sumav can assign family names with only the AV labels. This system also requires no maintenance and can provide high-quality labeling performance even if sudden changes have been made to the AV label system.

JML’s “Callisto Lite”: is the brand extension a problem or the product itself?

Learning outcomes The learning outcomes are as follows: to understand how organizations can leverage the built-in brand equity; outline the challenges of extending a strong brand; and ability to think about the core-essence of the brand impact and its perception among customers before deciding to extend. Case overview/synopsis JML was a 74-year-old company and was a No.1 player in the domestic market and No. 4 globally. It maintained this leadership position through a robust product portfolio and serving new needs and opportunities. Customers associated JML's products (buses and trucks) with high-quality performance, sturdiness & reliability. JML had a well-established brand – “Callisto”, in the heavy bus segment but saw an opportunity in light buses, which could be used within the city and for school and office commute purposes. They launched Callisto Lite, a variant of successful Callisto buses, in 2015 for cashing this opportunity. Though initially, the brand showed positive signs but soon lost the novelty value and saw low returns on marketing investments. Callisto Lite was also diluting the strong brand equity of the successful parent brand. The management was undecided as to what to do. Should they move out of the segment or continue? Each had its own pros and consequences, and the decision was not easy. Complexity academic level The case can be used in an undergraduate or a post-graduate management program to teach the core concepts of branding and brand extension. The case can be used in an introductory marketing course or elective courses like Brand Management and Marketing Strategy. Supplementary materials Teaching notes are available for educators only. Subject code CSS 8: Marketing.

Atomic Hydrogen Annealing of Graphene on InAs Surfaces and Nanowires: Interface and Morphology Control for Optoelectronics and Quantum Technologies

Folding two-dimensional graphene around one-dimensional III–V nanowires yields a new class of hybrid nanomaterials combining their excellent complementary properties. However, important for high-quality electrical and optical performance, needed in many applications, are well-controlled oxide-free interfaces and a tight folding morphology. To improve the interface chemistry between the graphene and InAs, we annealed the samples in atomic hydrogen. Using surface-sensitive imaging, we found that the III–V native oxides in the interface can be reduced at temperatures that maintain the graphene and the III–V nanostructures. Transferring both single- and multilayer graphene flakes onto InAs NWs, we found that single layers fold tightly around the NWs, while the multilayers fold weakly with a decline of only a few degrees. Annealing in atomic hydrogen further tightens the folding. Together, this indicates that high-quality morphological and chemical control of this hybrid material system is possible, opening for future devices for quantum technologies and optoelectronics.

High laser performance of an Al3+ and Nd3+-codoping in sodium-borotellurite glass for NIR broadband laser application

The main spectroscopic properties of Nd3+ ions immersed in an oxide glass with composition 59B2O3–10TeO2–30Na2O–1Al2O3:1Nd2O3 (in mol%) has been studied by X-ray diffraction, EDS, SEM, luminescence, transmission, FTIR and Raman spectroscopies. Very high values of the main spectroscopic parameters of Nd3+ ions were determined from the Ωt intensity parameters according to Judd-Ofelt formalism. The 4F3/2 → 4I11/2 NIR transition at 1060 nm of Nd3+ ions is evaluated from the relevant laser parameters reporting a very high quantum efficiency (95%), large effective bandwidth (36 nm), high laser performance quality (9.19 × 10−24 cm2·s) and low saturation intensity (2.04 × 108 W/m2). The excellent non-linear properties of Nd3+ ions are attributed to a microcrystallization inside the glass induced by Al3+ and Nd3+-codoping and a high sodium concentration which intensified the ligand field strengths around Nd3+ ions. Such microcristallization is verified by the presence of several crystalline peaks observed in the FTIR and Raman spectra and identified as Al–O and Te–O linkage vibrations in α-Al2O3 and α-TeO2 phases. As a consequence, a significant reduction of free hydroxyls is appreciated at the midinfrared region in both spectra. Whereas the presence of graphite was detected in the Raman spectrum at 2450 and 2889 cm−1. The great centrosymmetric loss of the Nd3+-sites is indicated by a high value of the Ω2 parameter (36.98 × 10−20 cm2) and confirmed by matched vibrational modes displayed in the deconvoluted Raman and FTIR spectra from 370 to 1750 cm−1 according to the Mutual Exclusion Rule for non-centrosymmetric point groups. The X-ray pattern of the Nd3+-doped oxide glass shows three different amorphous phases generated by delocalized and localized 4f-electrons indicating coexistence of ionic and covalent oxide-metal bonds as characteristic of the invert glasses. However, the compositional parameters confirmed a preferentially covalent domain of oxide-metal bonds as well as presence of crystalline phase, being both structural characteristics consistent with the Judd-Ofelt, transmission, FTIR and Raman results. Finally, the radiative properties are compared with those reported for other Nd3+-activated aluminate glasses suggesting that Al3+ and Nd3+-codoped sodium-borotellurite glass has a great potential for NIR broadband laser application.

High-Performance Quality Factor Based Sensor With Diagonal Cylinder Metasurface of the Bound State in the Continuum

High-quality-factor (high-Q-factor) electromagnetic resonance plays an important role in sensor applications. Previously proposed gas refractive index sensors are often limited by the large cavity length or microscale fabrication process in practical applications. Recently, ultra-high Q factor resonance based on the bound state in the continuum (BIC) has provided a feasible approach to solve these problems. In this paper, we propose a metasurface structure consisting of a single size tetramer cylinder. It supports dual band toroidal dipole (TD) resonances driven by BIC. The physical mechanism of double TD resonances is clarified by the multipole decomposition of the metasurface band structure and far-field scattering power. The sensor structure based on this achieves a sensitivity of 518.3 MHz/RIU, and the maximum line width does not exceed 680 kHz. The high-Q-factor electromagnetic resonance has the advantages of polarization independence and simplicity to manufacture. These findings will open up an avenue to develop the ultrasensitive sensor in the gigahertz regime.