bluuebunny/crossref_metadata_2025 huggingface dataset:
Avaliação das aprendizagens no ensino superior: práticas, reflexões e experiências no curso de Educação Física
Authors: Pipa Mariana Serrano , Santos Junior Nei Jorge
Published: May 2023

O estudo teve como objetivo analisar as práticas avaliativas do processo de ensino-aprendizagem no curso de Licenciatura em Educação Física da Universidade Federal Rural do Rio de Janeiro (UFRRJ). A metodologia parte de uma pesquisa qualitativa. O método utilizado para a coleta de dados foi um questionário semiestruturado, composto por oito perguntas abertas e fechadas. Contribuíram, como sujeitos da pesquisa, dezenove discentes do referido curso. Os dados obtidos e analisados apontam que, para esse grupo de discentes, a avaliação é fundamental no processo de ensino e, sendo utilizada de forma justa e inclusiva, pode contribuir para a formação crítica e reflexiva. Assim, conclui-se que as discussões que envolvem a temática têm contribuído para que parte dos docentes incorporem novos conceitos e perspectivas sobre a avaliação.
INFORMATION AND MEASURING TOOLS FOR EXPRESS ASSESSMENT OF ENVIRONMENTAL DAMAGE FROM MILITARY AGGRESSION OF THE RUSSIAN FEDERATION
Authors: Bandurian Boris , Kovalevskyj Volodymyr , Koloskov Volodymyr , Lytvynenko Volodymyr
Published: May 2023

The presented work improves the potential method of assessing the state of security in the direction of assessing damage to the ecological system as a result of military aggression. It is expedient to assess damages from the military aggression of the russian federation as the sum of three components: the cost of damage as a result of the destruction of Ukraine's overall potential; costs for restoring the aggregate potential to the level of the country's projected development in peacetime conditions; component of compensation for the damage caused, which was not detected at the time of the evaluation of the first two components.
For the practical implementation of the improved potential method of assessing damage to the ecological system of Ukraine from the military aggression of the russian federation, it is proposed to use as an instrumental basis the measurement of the distribution of infrared radiation with the use of spectrometric analysis. It is shown that the use of such an approach allows finding pollutants under a layer of clean soil by radiation in the infrared range. This allows you to determine the limits of pollution without taking samples and to limit yourself to the minimum number of samples exclusively in the places of clarification of pollution parameters. The specified method can also be used to determine the potential for accelerating soil erosion as a result of military operations.
DETERMINATION OF THE FEATURES OF THE AERATION TANK REGENERATOR AS A COMPONENT OF THE SYSTEM OF BIOLOGICAL TREATMENT OF WASTEWATER
Authors: Gornostal Stella , Petukhova Olena , Holovakhina Alevtyna , Romenska Yulija
Published: May 2023

The paper considers the issue of compliance with the technological regulations for the operation of the regenerator of the aeration tank. An analysis of the features of the processes in the regenerator was carried out, the factors affecting them were determined, namely the intensity of aeration, consumption and initial dose of activated sludge.
To determine the characteristics of activated sludge at the exit from the regenerator, experimental studies were conducted and a model was obtained that describes the regeneration process in the aeration tank. Using the model, the influence of the process components on the concentration of activated sludge at the outlet of the aeration tank was studied. As a result of the study, it was established that the dose of sludge at the exit from the first corridor of the aeration tank (regenerator) depends on the concentration and consumption of activated sludge, which is received after settling the mixture from secondary sedimentation tanks.
The practical use of the obtained results will make it possible to quickly respond to changes in the technological mode of sludge regeneration and effectively influence the process of biological cleaning in the aeration tank. Compliance with the technological regulations for the operation of treatment facilities is aimed at protecting the environment, preventing pollution of water bodies due to the inflow of insufficiently treated wastewater.
DETERMINATION OF THE ECOLOGICAL STATE OF THE KREMENCHUK RESERVOIR ON THE BASIS OF INFORMATION ENTROPY
Authors: Bezsonnyi Vitalii , Plyatsuk Leonid , Ponomarenko Roman , Tretyakov Oleg
Published: May 2023

It was established that the water does not meet the upper limit of the 1st quality class according to DSTU 4808:2007 by all indicators except for chloride ions, SPAR and suspended substances. There is a decrease in the level of BSK5 at the monitoring post in the lower part of the reservoir, which indicates the entry of substances into the watercourse that inhibit biochemical processes. There is also an increasing trend in the content of sulfates, phosphates, nitrogen compounds and HSC in water for control points located within the influence of industrial cities, along the reservoir. The highest values of the entropy index of water quality are characteristic of points p2, p. Adamivka, Chygyryn district (0.59015) and p3, village. Pronozivka Globyn district, (0.63092). These control points are located at a considerable distance from industrial centers, so pollution caused by agricultural production (application of phosphate and nitrogen fertilizers) probably plays a decisive role in the formation of water quality. The smallest value of the index (0.39397) is characteristic of item p1 – c. Sokirne, drinking water intake in the city of Cherkasy. The value of the non-torsion water quality index is in the range from 0.39397 (point p1) to 0.63092 (point p3).
IMPLEMENTATION OF AN INTEGRATED MONITORING SYSTEM TO ENSURE THE ENVIRONMENTAL SAFETY OF WATER RESOURCES
Authors: Hienova Anastasiia , Bihdan Serhii , Shmandiy Volodymyr , Kharlamova Olena , Rigas Tetiana
Published: May 2023

Groundwater pollution is a serious environmental problem in Ukraine, where groundwater is used for drinking, industrial, and agricultural purposes. Compliance with hygienic requirements for water quality is especially important during wartime, as underground water is a strategic source of drinking water for the population. Therefore, effective groundwater monitoring and management are crucial for ensuring Ukraine's ecological safety. To address water pollution, continuous monitoring of water quality is necessary, especially near industrial facilities and landfills for solid household waste.
However, the existing monitoring systems in Ukraine are not always effective, and complete and accurate information about the state of groundwater is not always available. To effectively manage water resources, it is necessary to consider the possibility of creating an integrated monitoring system that combines various methods and technologies to obtain more complete information about the state of water resources and manage them effectively. An overview of the problem of groundwater pollution in Ukraine was conducted, and the existing methods of groundwater monitoring were analyzed, with their advantages and disadvantages established. The current state of groundwater monitoring in Ukraine was also considered. A brief description of the Integrated Groundwater Monitoring System was presented, and its role in effective groundwater management and the prevention of water pollution was discussed. The possibility of using the Integrated Monitoring System in Ukraine was also considered. It was proposed to use monitoring sensors that measure the parameters of water seeping from the aeration zone to the saturation zone in real-time mode. In conclusion, the role of the Integrated Groundwater Monitoring System in solving the problem of water pollution was emphasized, and recommendations were made for its implementation in practice. Further prospects for research in the field of groundwater monitoring in Ukraine were also outlined.
INFORMATION SOFTWARE SUPPORT OF COMPLEX ESTIMATION BASED ON SYSTEMOLOGICAL APPROACH OF PETROL STATION TECHNOLOGICAL ECOLOGICAL SAFETY
Authors: Kozulia Tatiana , Korshunov Svjatoslav
Published: May 2023

The paper defines advantages of using systemological approach and systemological classification analysis for information software systems creation in system objects scientific analysis that solves estimation problems of technological objects influence upon environment. It provides usage overview of systemological theses during various objects models creation while solving interdisciplinary tasks. These models capabilities and effectiveness are determined.
Normal petrol station (are classified as potentially dangerous object) functioning was chosen as the practical research subject. The main technological load of the normal petrol stations functioning is accrued upon atmosphere through oil products evaporation, water objects, underground water and citizens’ water supplies through wastewater, soil through organic matter wastes. This means that authors suggested complex solving of technological ecological security problems of such potentially dangerous objects.
The systemological model of potentially dangerous object (“environment – petrol station” – pollution systems – petrol station ecological state based on “petrol station – environment”) danger estimation was chosen as a research object to develop informational support of determining petrol stations influence on environment. The research subject is determining complex estimation of normal petrol station functioning influence on environment. It based on systemology of the technological objects research and the design of information software support of potential dangerous objects technological ecological danger determination.
Normal petrol station systemological model as of technologically dangerous object was designed. There was provided mathematical support to determine factors of influence on environment taking into account population health, influence parameters determination algorithms, and complex estimation calculation of technological load upon environment. These are the results of the work.
ECOLOGIZATION OF PRINTING PLATE PROCESSES PRODUCTION
Authors: Repeta Vyacheslav , Kukura Yurii , Dydiv Andrii
Published: May 2023

The article analyzes the technological process of manufacturing photopolymer flexographic plates, determines the danger from the point of view of ecological impact that certain technological processes can cause, and proposes measures that minimize their dangerous impact on the environment. A comparison of the properties of solvents and their advantages and at the same time harmfulness was carried out with the establishment of the reasons for the subsequent development of alternative organic solvents and the operation of washout flexographic photopolymer printing plates with water or waters solutions. General strategic directions for solving the problem of using volatile organic solvents have been established. The following classification of ways to solve this problem is proposed: use of less toxic solvents or water; elimination of the washing operation from the technological process of manufacturing flexographic photopolymer plates; development of new technological processes for the production of flexographic plates.
Based on the results of a comparative analysis of mold manufacturing technologies, a change in the anthropogenic factor was established as a result of improving processes and their environmentalization. It is shown that by introducing information and laser technologies into the technological processes of manufacturing printing forms due to the reduction of the influence of the anthropogenic factor, a significant improvement in the environmental safety of production is achieved, although the introduction of such technology requires large capital investments. According to the results of a comparative analysis of printing plate manufacturing technologies, the so-called ecological factor is shown as a result of improving processes and their ecologization. If we talk about spent photopolymer plates, then the problem of their disposal is still open. Taking into account the current negative effects on the economy of Ukraine, the use of more environmentally friendly technologies and materials in the flexographic sector of printing depends to a greater extent on the economic situation at specific enterprises, and not on the purposeful environmental policy of the state.
REDUCING THE LEVEL OF TECHNOGENIC HAZARDS IN THE DISPOSAL OF URBAN SEWAGE SLUDGE
Authors: Dushkin Stanislav
Published: May 2023

The article deals with the issue of reducing the level of man-made danger of the negative impact of urban sewage sludge on the environment by removing heavy metals with the help of humic substances.
It is noted that urban sewage sludge contains more than 90% of organic substances that can serve as organic fertilizer for agriculture. However, these sediments are practically not used as fertilizers due to the lack of approved technical and sanitary-hygienic requirements for them.
At the same time, it was established that the composition of urban wastewater generated at the city's sewage treatment plants contains heavy metals, which must be removed from wastewater sediments in order to use them as fertilizers in agriculture.
A new method of removing heavy metals from urban sewage sludge using humic reagents with simultaneous ultrasound treatment is proposed.
Effective modes of simultaneous mixing of humins and their ultrasonic treatment have been selected, as a result of which the efficiency of heavy metals, namely iron, copper and aluminum, is improved.
Radiometric Mapping for The Identification of Hydrothermally Altered Zones Related to Gold Mineralization in Ife–Ilesa Schist Belt, Southwestern Nigeria
Authors: Akinlalu Ayokunle Adewale
Published: May 2023

This study presents the interpretation of airborne gamma ray spectrometric data to delineate hydrothermally altered zones related to gold mineralization in the Ife–Ilesa Schist belt. K/eTh, Kd and F–Maps highlighting Potassic alterations related to gold mineralization were processed on the Oasis Montaj software and subsequently integrated using fuzzy logic modeling to produce the hydrothermal alteration map of the study area. The C–A fractal analysis was applied to the final hydrothermal map and was able to classify the study area into background, very low, low, moderate, high and very high alteration. These classes reflect the pervasive hydrothermal alteration style of the study area. The hydrothermally altered areas are evident on granitoids and areas proximal to it indicating that granitoids are proxies of heat source. Occurrence of active mining sites in the area agrees with the generated hydrothermal alteration map of the study area with 81% agreement. It therefore shows that radiometric method is a veritable method in mapping hydrothermal alteration areas. The use of radiometric method only cannot reliably map areas of gold mineralization as mineralization can be associated with several other processes. Hence, other methods involving geochemical and magnetic methods including GIS tools can be employed for further prospecting.
Didactic Recommendations for Teaching About Integrated Care in Human Services Addiction Education
Authors: Carlisle Kristy , McCloskey Mary
Published: May 2023

This article presents didactic activities and recommendations to implement in human services addiction education that uses Transformative Learning Theory to teach about integrated care approaches that are associated with improved client outcomes. Authors discuss learners’ attitudes and beliefs towards addiction and evidence-based treatment; exploring traditional, evidence-based, and holistic treatment practices; and experiential learning and reflection. The innovative goal of this article is to advocate for addiction education that expands learners’ belief systems so that they are more open to integrated care options that cater to each individual they treat.
Digital Communication Management Bandung City Government in Inclusive and Sustainable Economic Recovery in Bandung City
Authors: Ekasari Retno , Saktisyahputra Saktisyahputra , Ambulani Nur , Akib Syubhan
Published: May 2023

The COVID-19 pandemic has occurred in the world since 2020, not only in Indonesia but also in all countries in the world. The economic impact of the Covid-19 pandemic has been felt by the Indonesian people since the implementation of the Large-Scale Social Restrictions (PSBB) on March 15, 2020. Community activities are forced to be carried out through digital transformation in services, transactions and work, for example the Bandung City Government. This research was conducted to determine the Digital Communication Management of the Bandung City Government in an inclusive and sustainable Economic Recovery in Bandung City. The object of this research is the Bekasi City Government. This study uses the method of Phenomenology of Edmund Husserl. Having the concept of phenomenology as a scientific method that does not start with doubt, direction, and the truth of an experience. Data collection techniques in this study by means of observation, interviews, and documentation. Data analysis techniques in this study use data reduction, data display, and verification of Miles and Huberman. Based on the Data Findings, Data Results and Discussions that the researchers have submitted, it can be concluded that the Bandung City Government has implemented Digital Communication Management in helping inclusive and sustainable economic recovery by through digital platforms, it is more helpful for small entrepreneurs, especially the current focus on Micro, Small and Medium Enterprises. One of them is Digital Transformation by continuing to encourage the implementation of smart cities through digital transformation in various aspects of public services.
Korean Beauty Product Branding Trough Men: A Prestige Fulfillment For Fans
Authors: Wahidah Ananda , Nurbayani K Siti , Purba Anwar Soleh , Aryanti Tutin , Malik Imam
Published: May 2023

The visual beauty of entertainment actors is the main attraction for Korean popular culture products, especially beauty trends. Korean wave through beauty products offers a new discourse that beauty is not only absolute for the female but also represented through the male body. This is interesting to research because the preference for consumption patterns of aesthetic culture among Korean fans is not only for women, male fans are also objects of the Korean beauty product market. Interviews were conducted with Korean fans in Bandung, who are members of the Hansamo community and members of the cover dance by face-to-face. The results showed that South Korea successfully marketed beauty products through the perfect visual quality of Korean celebrities, instant branding, pop-up stores with attractive themes, and the provision of free testers. Korean Wave succeeded in utilizing the desire of Korean fans to consume Korean beauty products to fulfill their prestige in achieving the perfect face, fashion (style), and appearance like their idol.
Internal Factors Affecting the NPL of State-Owned Commercial Banks
Authors: Sofyan Mohammad , Purwanto Bambang Heru
Published: May 2023

Banking in Indonesia generally relies on loan interest income as the primary income in financing its operations. Not all credit extended is risk-free; some have sizable risks and can threaten the bank’s health. So to measure a bank's ability to overcome failure to take credit from debtors, the NPL ratio can be used. This study aims to analyse the influence of internal factors, namely: CAR, LDR, NIM, and OEOI, on NPLs of State-Owned Commercial Banks during 2015-2022. The research was conducted using a qualitative descriptive method with panel data using the financial statements of Bank BRI, Bank BNI, Bank Mandiri, and Bank BTN during 2015 - 2022. The results of this study indicate that CAR and BOPO have a significant positive effect on NPL, while LDR and NIM have a significant negative effect on NPL.
Village Tourism Promotion Through Virtual Tour
Authors: Satrya I Dewa Gde
Published: May 2023

Introduction/Main Objectives: The COVID-19 pandemic has sparked creativity among tourism actors. Tourism villages as one of the tourist attractions, conduct virtual tours to introduce their attractions and facilities. The purpose of this study is to describe the role of virtual tours as a promotional medium in increasing interest in visiting village tourism. Background Problems: with the policy of limiting tourist travel, the tourism industry has experienced a decrease in the number of tourist visits. Digitalization is a way to maintain relationships with consumers and carry out promotions through virtual tours. The formulation of the research problem is what is the role of virtual tours as promotional media in increasing interest in visiting village tourism? Novelty: The novelty of this research lies in the use of virtual tours as a promotional medium to increase millennial tourist interest by involving relevant stakeholders. Research Methods: research was conducted with a qualitative approach. Primary data was obtained through focus group discussions and interviews during the virtual tour. Secondary data was obtained through relevant literature. Finding/Results: a virtual tour of the three tourist villages that became the case studies in this study, namely Nepal Van Java in Central Java and Sade Village in West Nusa Tenggara, succeeded in providing information that attracted millennial tourists to visit. Conclusion: the virtual tour is an effective promotional medium in increasing interest in visiting tourist villages.
Optimization of Services and Accessibility Webinar Tutorials on Satisfaction Using the Microsoft Teams Application for Universitas Terbuka Students
Authors: Sunarya Amud , Wulandari Florentina Ratih
Published: May 2023

This research aims to determine the effect of webinar tutorial facilities and accessibility on student satisfaction in applying Microsoft Teams. This type of research is survey research that is quantitative with multiple linear regression analysis. Where the service and accessibility of the webinar tutorial are independent variables, and student satisfaction with using the Microsoft Teams application is the dependent variable. The research population is the Universitas Terbuka students in the 2022.2 academic year who follow the webinar tutorial for scientific papers. Obtained the sample from students of the public administration study program by filling out google forms. This study tries to show a positive influence between the service and accessibility of webinar tutorials on student satisfaction after applying Microsoft Teams. The study is expected to produce new findings on the benefits and accessibility of webinar tutorials to provide satisfaction to Universitas Terbuka students in using the Microsoft Teams application.
The Experience Economy and Marketing Approach in Rural Tourism that Creates Memorable Experience (A Study in Cikolelet Tourism Village)
Authors: Juliana  , Sihombing Sabrina Oktaria , Antonio Ferdi
Published: May 2023

The approach and use of the experience economy has transformed a tourist village with new added value. The presence of ecotourism-based tourism villages and examines the use of community-based tourism models in the development of tourism villages. Through the CBT model, the development of tourist villages has an impact on reducing unemployment, being able to maintain local wisdom and encouraging village independence. The research objective is to examine the use of the experience economy and the use of the CBT model in the development of the Cikolelet tourism village. The research method uses qualitative research methods. Informants in the study were the head of the tourism village Pokdarwis and member of Pokdarwis of the Cikolelet tourism village who understood tourism villages. Data collection techniques were carried out through observations, interviews, and direct documentation of the research object. The results of the study can be concluded that The experience economy concept can be applied to Cikolelet rural tourism to enhance the tourist experience and create a unique and memorable destination. The experience economy is based on the idea that people are increasingly seeking experiences over material goods, and that businesses can create value by designing and delivering unique and memorable experiences.
Human Trafficking Interventions (HTI): A Rapid Documentary Analysis of Central Asia Region’s (CAR) Efforts
Authors: Esson Daniel , Ansie Vera , Ameke Theresa
Published: May 2023

The governments in the Central Asian Region (CAR), until recently, have failed to recognize the prevalence of human trafficking as a social and human rights problem. Even though the problem has persisted for a long time, there is almost non-existent empirical evidence on intervention approaches. Therefore, this study curates and synthesizes evidence on human trafficking interventions in CAR to open up academic conversations in this area. This study adopts the rapid documentary analysis approach as a starting point for further studies, drawing insights from the ecological systems theory to examine human trafficking interventions in CAR. The data is analyzed in line with thematic analysis procedures. Major themes representing overarching mechanisms used in the CAR to intervene in human trafficking situations include 1) awareness creation to expand knowledge on human trafficking 2) provision of shelter and psychosocial support 3) collaborations between different organizations and sectors and 4) tightening legislation. The findings suggest that while this study sets to open conversations about human trafficking interventions in Central Asia as the first study on human trafficking interventions, it is important to use other data curation methods to explore the extent of human trafficking interventions in the region which will fill any information gap this study might have missed.
Ministry of Religion Innovation in Digitalization-Based Hajj Dormitory Services: Si-Mashaji Application
Authors: Hendrizal  , Frinaldi Aldri
Published: May 2023

The Hajj Dormitory Management Information System application is used as a digital-based service booster that makes it easier for people as service users to book facilities and get information related to Hajj dormitories. This research uses a qualitative descriptive approach with case studies, while the data used comes from secondary data sources from SI-MASHAJI and primary data from the interview process with informants. Data analysis was performed using SWOT analysis. This paper also explains the typology of innovation in the public sector and classifies the SI-MASHAJI application as a newly used public service innovation. The conclusion is that the Ministry of Religious Affairs of the Republic of Indonesia has tried to transform and adapt to the 4.0 era where services in Hajj dormitories are carried out digitally through the SI-MASHAJI Application. Service users in the Hajj dormitory will get all kinds of convenience in the field of services and information services in the Hajj dormitory and SI-MASHAJI is applied to support the value of accountability in the Ministry of Religious Affairs, especially in the Hajj dormitory.
Policy Analysis For the Determination of BIPIH For Indonesian Hajj Pilgrims in 2023
Authors: Hendrizal  , Syamsir  , Frinaldi Aldri
Published: May 2023

The policy of determining Bipih (Hajj Travel Expenses) is a policy made by the Indonesian government to determine the costs to be paid by Indonesian Hajj pilgrims in carrying out Hajj in Mecca. This type of research was carried out using qualitative descriptive methods and analyzed using the SWOT method by utilizing secondary data in the form of Bipih increase policies in 2023 issued by the Ministry of Religious Affairs of the Republic of Indonesia. The source of the data can be found on the official website of the Ministry of Religious Affairs of the Republic of Indonesia, namely Kemenag.go.id and haji.kemenag.go.id. The government this year increased costs due to the imbalance in the value of benefits that have been going on starting from 2018 so that the policy of increasing Bipih in 2023 became the government's choice. Because the announcement period is very close to the announcement of the repayment of Bipih pilgrims, and this creates cons in the community. The increase in Bipih aims for the sustainability of the value of benefits for pilgrims who will depart in the coming years.  Furthermore, it is advisable to do policy planning better and the Government through public relations must also provide information gradually and continuously to the public regarding the increase in Bipih.
The Influence of Capital Intensity, Inventory Intensity, and Profitability on Tax Aggressiveness with Debt Levels as a Moderating Variable
Authors: Fitriani Riski Ayu , Indrati Menik
Published: May 2023

This study's objective was to analyze the impact of capital intensity, inventory intensity, and profitability on tax aggressiveness, with debt level serving as a moderator. This study includes three independent factors, namely Capital Intensity, Inventory Intensity, and Profitability; one dependent variable, namely Tax Aggressiveness; and one moderating variable, namely Debt Level or Leverage. In this study, 17 firms out of a total observation of 45 companies with research objects on the LQ45 company index listed on the Indonesia Stock Exchange (IDX) from 2017 to 2021 met the inclusion requirements. According to the findings of this study, capital intensity has a beneficial effect on tax aggression. The variable inventory intensity has no positive impact on tax aggression. The unpredictable profitability has a favorable impact on tax aggressiveness. The association between capital intensity and tax aggression cannot be moderated by the variable of leverage. The association between inventory intensity and tax aggression cannot be moderated by the variable of leverage. The variable of leverage moderates in a positive way the association between profitability and tax aggression. This research can also be used to encourage investors and shareholders to receive financial statement information offered by companies with greater care when making investment decisions. For companies to be able to determine positive policies that can maintain business continuity and can meet the expectations of shareholders will carry out tax aggressiveness.
Implementation of Financial Accounting Standards for Small and Medium Entities in Berastagi SMES, Karo District
Authors: Pakpahan Yunita , Naibaho Wina Theresia br
Published: May 2023

This study aims to determine the application of accounting in Small, Micro and Medium Enterprises (MSMEs) and explain the barriers to business actors in applying accounting. This research is a descriptive qualitative research with data collection conducted through questionnaires and interviews. Object this research is MSME actors located in Berastagi District, Karo Regency. The data collected were 41 respondents using the purposive sampling technique. The results of the study show that most MSME actors do not know what to account for. The obstacle faced by business actors is the lack of socialization or training regarding accounting and SAK EMKM. The next obstacle is the lack of time to prepare financial reports, the assumption that financial reports are difficult to understand, and the low awareness of business actors to improve the presentation of financial reports by SAK EMKM
Reviewing Internal Variables on the Level of Underpricing of IPO Shares (Observation of the Company Go Public on IDX 2021-2022)
Authors: Yandes Jufri , Setyo Nugroho Sapto
Published: May 2023

This research study was held to examine internal variables that can determine the effect of stock underpricing levels when conducting an IPO (Initial Public Offering) on the IDX (Indonesia Stock Exchange) 2021-2022. Internal factors include ROE and ROA. Research is quantitative and uses secondary data, explanatory research study type, using methods by purposive sampling when determining samples. The novelty of the study can be seen from the overall data and the latest samples used by 64 issuers and the periods used, namely 2022 and 2021. The study used hypothesis testing methods, including multiple linear regression analysis through the help of Eviews (Econometric Views). The source of data used in this study is prospectus data issued by companies or issuers that go public with underwriters. The calculation results obtained partially produce ROE and ROA variables have a significant influence on the level of underpricing in IPO shares, and simultaneous results show that ROE and ROA variables together have a significant effect on the level of underpricing of IPO shares. The result of a positive value coefficient is obtained at the IPO stock underpricing level, then the ROE variable has a negative coefficient and the ROA coefficient is positive, this is interpreted by the increase in the ROE value, the stock underpricing level will decrease and apply to vice versa, and for the ROA variable that has a positive coefficient means that the more the ROA value increases, the stock underpricing level will also increase and vice versa.
ЭЛЕКТРОХИМИЧЕСКОЕ ПОЛИРОВАНИЕ СПЛАВА АЛЮМИНИЯ МАРКИ А0 В КИСЛЫХ ЭЛЕКТРОЛИТАХ
Authors: Кочарян А.Н. , Торосян Г.О.
Published: May 2023

Алюминий и его сплавы в больших количествах используются в различных отраслях промышленности, в частности, в машиностроении, авиастроении, ракетостроении, пищевой промышленности, в строительстве, при изготовлении предметов декора, украшений и т.д. Для повышения коррозионной устойчивости поверхность алюминия оксидируют, полируют или красят. Полирование алюминия используют также для декоративных целей, перед нанесением металлических покрытий (например, перед хромированием, медне¬нием и оловянированием), для придания твердости поверхности и повышения антифрикционных свойств.
Электрохимически или химически обработанный алюминий обладает рядом весьма ценных свойств, например, улучшенными фрикционными, механическими и электрическими характеристиками. Поверхность, подвергнутая электрохимическому или химическому полированию, не тускнеет при анодировании. Электрохимическое полирование металлов, в отличие от химического и механического, более эффективно. Оно позволяет провести полную автоматизацию процесса, обеспечивая высокое качество. Электрохимическое полирование легче регулируется, поскольку одним из основных его параметров является плотность тока, которую можно легко изменять в широком диапазоне. Несмотря на высокую стоимость этого метода, его широко используют для полирования алюминия и его сплавов, особенно для изделий сложной конфигурации, когда использование механического полирования практически невозможно.
Электрохимическое полирование чистого алюминия и его сплавов хорошо изучено в кислых электролитах и имеет широкое промышленное применение.
В представленной статье приведены результаты исследования электрохимического полирования декоративных изделий из алюминиевого сплава марки A0 в кислом электролите. Выбран оптимальный состав электролита, приводятся экспериментальные данные по анодной обработке изучаемых образцов. Изучено также влияние различных органических добавок на качество блеска металла
ТЕХНОЛОГИЯ ПОЛУЧЕНИЯ И ФИЗИКО-МЕХАНИЧЕСКИЕ СВОЙСТВА КОМПОЗИЦИОННЫХ МАТЕРИАЛОВ НА ОСНОВЕ ЖИДКОГО СТЕКЛА И ОТХОДОВ ВОДОСОДЕРЖАЩИХ АЛЮМОСИЛИКАТОВ
Authors: Гургенян Н.В. , Григорян  , Варданян Н.К. , Хачанова И.Б. , Аперян А.Ж.
Published: May 2023

Целью данной работы является разработка технологии получения конструкционно-теплоизоляционных изделий на основе жидкого стекла и отходов добычи и переработки алюмосиликатных водосодержащих горных пород - перлитов и цеолитов, с применением метода микроволнового синтеза. Отходы алюмосиликатных стекол представляют собой некондиционный продукт добычи и переработки перлитов и цеолитов.
Проведены химический, дифференциально-термический анализы, а также инфракрасные (ИК) спектрометрические исследования перлитовой и цеолитовой пород для определения количества и качества воды и гидроксила в их составе, которым отводится основная роль в процессе получения материалов. ИК-спектры свидетельствуют о наличии гидроксильных групп и воды в цеолитах и перлитах. Общий вид спектра перлита и цеолита в диапазоне 400...4000 см-1 характерен для алюмосиликатных стекол. Вода в данных образцах дает полосу деформационных ОН-колебаний при 1630...1640 см-1 и полосу валентных ОН-колебаний при 3400...3600 см-1.
Выбраны оптимальные составы и технологические параметры получения материала. В качестве связки использовалось комбинированное связующее на основе жидкого стекла.
Проведена микроволновая обработка образцов в интервале мощностей от 90 до 600 Вт в микроволновой печи марки MWA 268 BL для обеспечения конкурентоспособности материала, поскольку сверхвысокочастотная (СВЧ) обработка способствует как повышению качества материала благодаря равномерному прогреву в течение сушки, так и значительному сокращению энергозатрат.
Определены основные физико-механические свойства изделий, такие как средняя плотность, прочность при сжатии и водопоглощение по массе.
ФИТОИНДИКАЦИЯ И ФИТОРЕМЕДИАЦИЯ ПОЧВ ЮЖНОГО КАЗАХСТАНА, ЗАГРЯЗНЕННЫХ ТЯЖЕЛЫМИ МЕТАЛЛАМИ
Authors: Исаева А.У. , Ешибаев А.А.
Published: May 2023

Загрязнение почв тяжелыми металлами остается одной из приоритетных экологических проблем Южного Казахстана. Установлено, что из-за процессов водной и ветровой эрозии содержание ионов свинца и кадмия в почвах районов г. Шымкент, прилегающих к месту складирования свинцово-цинковых шлаков, превышает предельно допустимую концентрацию (ПДК) до 453,3±34,7 раза. Основной целью исследований было изучение возможности фитоиндикации и фиторемедиации почв Южного Казахстана, загрязненных тяжелыми металлами. Выявлено, что в условиях аридного климата юга Казахстана наибольшая концентрация ионов тяжелых металлов накапливается в верхних горизонтах почв, являющихся корнеобитаемым слоем для большинства видов растительности эфемероидной полусаванны. Наиболее фитоиндикативным показателем уровня загрязнения почв тяжелыми металлами являются фитоценотический состав растительного сообщества и проективное покрытие почв растительностью. Растительные сообщества различных зон загрязненности почв тяжелыми металлами неодинаковы как по количеству видов, так и по фитоценотическому составу групп, при этом в направлении роста токсического градиента растет доля эрозиофильных и рудеральных видов с преобладанием многолетних видов растений. Кроме того, в градиенте роста загрязнения наблюдается снижение доли мезофитных и увеличение ксерофитных экологических групп растений. Установлено, что скудный и стабильный видовой состав сообщества сосудистых растений импактной зоны загрязнения обоснован наличием у этих видов определенных механизмов устойчивости, обусловленных механическими, ростовыми барьерами и способностью растительного организма нейтрализовать излишнее количество ионов тяжелых металлов в виде нерастворимых в воде солевых отложений в межклеточном пространстве. Разработана технология фитоконсервации пылящих поверхностей токсичных отходов полиметаллического производства АО “Южполиметалл”, обеспечивающая за два года применения проективное покрытие консервируемой поверхности на 85…100%.
ИССЛЕДОВАНИЕ ПРОЦЕССА ФЕРРИТИЗАЦИИ В ОКСИДНЫХ СИСТЕМАХ Fe2O3–NiO–CoO–MoO3 И РАЗРАБОТКА ТЕХНОЛОГИИ ПОЛУЧЕНИЯ СЛОЖНЫХ ОКСИДОВ
Authors: Агбалян С.Г. , Симонян В.А. , Арутюнян Ю.В.
Published: May 2023

В современной технике очень востребованы материалы с функциональными свойствами, особенно материалы, обладающие высокой прочностью и пластичностью, где ударная вязкость играет уникальную роль как структурно-чувствительное свойство. Одним из таких материалов являются мартенситно-стареющие стали, которые являются сверхчистыми сплавами и характеризуются точным химическим составом, отсутствием примесей и определенной структурой. Получение указанных сталей возможно применением порошков легированных сталей и их дальнейшим уплотнением, причем уплотнение должно происходить с помощью технологий, которые способствовали бы диффузионным процессам и предотвращали наличие остаточной пористости в структуре.
Выявлено, что существующие методы получения легированных порошков сталей, в том числе мартенситно-стареющих сталей, не обеспечивают гомогенную структуру и высокую химическую чистоту, кроме метода синтеза сложных оксидов и их последующего восстановления. Исследованы механизм и кинетика ферритизации в оксидной системе Fe2O3–NiO–CoO–MoO3. Экспериментальным путем обоснован процесс синтеза сложных оксидов. На основе проведенных экспериментов разработана эффективная технология получения легированных оксидных порошков со структурой твердого раствора. Методом восстановления сложных оксидов получены порошки мартенситно-стареющей стали с требуемой структурой и сверхчистым химическим составом. Полученные порошки имеют высокие механические и технологические свойства. По результатам экспериментов были выбраны следующие режимы синтеза и получения ферритов для системы Fe2O3-NiO-CoO-MoO3-NH4Cl: температура нагрева - 1100250C, время выдержки - 3,5...4,0 ч. Показано, что процесс ферритизации протекает поэтапно. Сначала происходит хлорирование оксидов, затем - объемные и вторичные реакции. Синтез оксидной системы с участием NH4Cl осуществляется по механизму гетерогенных реакций как в газовой, так и в твердой фазах, продуктами которых считаются сложные оксиды типа MeFe2O4, MeO Fe2(MoO4)3, шпинель и твердые растворы NiFe2O4 CoMoO4.
МЕТОДИКА РАСЧЕТА ГЛУБИН РЕЗАНИЯ РЕЖУЩИХ СТУПЕНЕЙ МНОГОСТУПЕНЧАТОГО СПИРАЛЬНОГО СВЕРЛА ИЗ УСЛОВИЯ РАВЕНСТВА ИХ КРУТЯЩИХ МОМЕНТОВ
Authors: Баласанян Б.А.
Published: May 2023

Обработка отверстий спиральным сверлом является одним из основных и
распространенных видов механической обработки материалов резанием лезвийным
инструментом, которая широко применяется в различных отраслях машиностроения,
автомобилестроения, судостроения, авиастроения. Показано, что основной проблемой
процесса сверления является его низкая производительность, для повышения которой
успешно применяются методы математического моделирования. Обосновано, что
дополнительным резервом для повышения производительности процесса сверления
может быть применение спирального сверла с многоступенчатым лезвием, в котором
глубины резания его режущих ступеней определены из условия равенства их
крутящих моментов. Выявлено, что определение глубин резания режущих ступеней
многоступенчатого спирального сверла из этого условия - достаточно сложная задача,
связанная с громоздкостью известных математических зависимостей их расчета,
которые не имеют точного аналитического решения.
Целью работы является разработка методики и компьютерной программы для
расчета глубин резания многоступенчатого спирального сверла из условия
обеспечения равенства крутящих моментов всех его режущих ступеней. Для решения
поставленной задачи в программной среде LabView был разработан виртуальный
прибор, позволяющий достаточно быстро и с точностью до 1 мкм определить глубины
резания режущих ступеней многоступенчатого спирального сверла, при которых
обеспечивается равенство крутящих моментов всех его режущих ступеней с
точностью до третьего знака после запятой.
Разработанный виртуальный прибор имеет понятный для пользователя интерфейс и может найти применение в процессах проектирования многоступенчатого
спирального сверла и разработки технологии обработки отверстий в различных
металлах и сплавах, а также может быть полезен магистрантам, аспирантам и научным
работникам машиностроительных специальностей при проведении исследований.
ВИРТУАЛЬНАЯ ЛАБОРАТОРИЯ В СРЕДЕ LABVIEW ДЛЯ ОПРЕДЕЛЕНИЯ ОПТИМАЛЬНЫХ ПАРАМЕТРОВ ПЛОСКОВЕРШИННОГО РЕГУЛЯРНОГО МИКРОРЕЛЬЕФА
Authors: Григорян В.Ш. , Аршакян А.Л․ , Баласанян Б.С.
Published: May 2023

Целью работы является снижение трудоемкости и материальных затрат в процессе
экспериментального определения оптимальных параметров формирования
плосковершинного регулярного микрорельефа (РМР) на рабочей поверхности деталей
машин путем замены реальных экспериментальных исследований на виртуальные. С
этой целью разработана виртуальная лаборатория в среде LabView для создания
виртуальных образцов деталей машин с плосковершинным РМР с параметрами,
близкими к параметрам реального образца с плосковершинным РМР, и определения
их оптимальных параметров.
Виртуальная лаборатория в среде LabView позволяет на основе созданных
профилей поверхности виртуальных образцов деталей машин с плосковершинным
РМР построить кривые Аббота и дать заключение об износостойкости детали с таким
профилем. По сравнению с известной виртуальной лабораторией, разработанной в
среде Microsoft Office Excel, предлагаемая нами виртуальная лаборатория в среде
LabView имеет явные преимущества: более удобный и понятный для пользователя
интерфейс и более широкие диапазоны изменения входных параметров; кроме того,
она отличается на один порядок и более меньшим объемом (300 Кбайт против 6
Мбайт). При этом число входных параметров в предлагаемой виртуальной
лаборатории на один параметр меньше, что позволяет сократить число виртуальных
исследований в два раза.
Разработанная виртуальная лаборатория в среде LabView может найти широкое
практическое применение при создании виртуальных образцов с плосковершинным
РМР, а также при проведении виртуальных экспериментальных исследований и
определении оптимальных параметров формирования поверхности детали с таким
рельефом из условия обеспечения ее наибольшей износостойкости.
HOMOLOGICAL MAPPING OF THREE-DIMENSIONAL SPACE AND RELIEF PERSPECTIVE
Authors: Soghomonyan K.H․ , Poghosyan M.Z․ , Bakunts M.G
Published: May 2023

The homological features of one particular type of projective mapping of three-dimensional spaceare considered. It is proved that the double plane of homology is parallel to the imaginary plane figure in the space. It is shown that by means of homology, the entire three-dimensional semi-space is mapped on the area bounded by two parallel planes. The obtained image formed by mapping satisfies the conditions of the relief perspective, therefore, a homological connection is established between the space and its relief image. Thus, the relief perspective of the space can be obtained through mapping.
Issues on the synthesis of projective conversions are considered, which allow to reflect the infinite part of the space on a limited domain.
Thus, the aim of our research is to study the very geometric transformations, which will allow to project the given space onto its boundary domain. They can serve as a basis for development of geometrical modeling algorithms of the relief perspective and the automation of their construction. The present issue is of practical importance as the existence of the computer model of the relief image will make it possible to automate the process of designing the relief image containing objects and organize their productionwith the help of digitally controlled machines (as well as 3D printers).
FINANCIAL PRODUCTION IN ISLAM
Authors: Bayinat Basha Al-Bajali Abul Firdaus
Published: May 2023

Worship includes every human movement in life, and accordingly a person’s quest for gain is worship, and he is rewarded for it as long as he adheres to what he is obligated to do in it. The research has been called just earning; Because the meaning of justice is a comprehensive meaning to address many things, it is more general from the word of the halal or crusher, and human must be amounting to himself and with others, Allaah says: you remember.

In my research, (production financing in Islam) I dealt with some of the production issues from a Quranic perspective by explaining its importance, responsibility, objectives, controls and financing, explaining the difference between the concept of production and the concept of earning, then the production controls and production financing in Islam, then the conclusion of the chapter was with a statement of the alternatives in investment and financing by participation. in the capital. For this reason, I extrapolated the verses in which the conditions of earning are mentioned in the Noble Qur’an, using the inductive method, then I interpreted the verses and explained hadiths, criticism and deduction. Using the analytical method, then I showed the teachings to which the verses guide us, which must be applied in dealing with people through the applied approach.