bluuebunny/crossref_metadata_2025 huggingface dataset:
Застосування методу парирування відмов датчиків при управлінні роботою малорозмірного авіадвигуна
Authors: Dunai Andrii , Vialov Serhii
Published: August 2023

The subject of the research is the application of the method of parrying sensor failures - one of the modern progressive approaches to ensuring the smooth and efficient operation of complex automatic control systems. This article is devoted to the application of this method in the control of a small-sized aircraft engine, which is an actual solution for the development of the aviation industry. The purpose of this study is to choose the optimal method for parrying sensor failures of a small-sized aircraft engine by analyzing existing methods and choosing engine parameters that should be used for parrying. Tasks. Consider the main methods of countering sensor failure and justify the choice of the most effective one. To state the main principles of the method of replacing the parameter value at all stages of the development of the control unit for the operation of a small-sized aircraft engine and to carry out an analysis of the disadvantages and advantages of such an approach. Consider algorithms for identifying and countering sensor failures for the engine management system. Analyze the simulation of individual parameters of a small-sized aircraft engine and propose parameters that should be replaced in the event of sensor failure. Research methods. Comparative analysis of methods of parrying sensor failures and models for simulating the parameters of small-sized aircraft engines with adjacent ones. The results. The method for replacing the parameter value with an adjacent one, switching to a backup value, redundancy, and the use of backup data sources are analyzed. Among the parrying methods, the two most optimal ones are selected (the method of replacing the value of the failed sensor parameter with an adjacent parameter and the method of switching to a backup value) and their work algorithms are described. The advantages are increased reliability and efficiency of engine operation, prevention of information loss, adaptability, and improved diagnostics. Among the shortcomings, the existence of risks of erroneous measurements, complex settings, accuracy limitations, dependence on other parameters, cost and complexity of the system are highlighted. Using the example of the ECU-35 unit developed by JSC "Element", the model of replacing the engine rotor speed parameter using the current temperature of the gases behind the turbine, taking into account the calibration of the measurement channel, was described. Conclusions (scientific and practical novelty). It was found that the application of the method of identification and parrying of sensor failures ensured the smooth operation of the control system when individual sensors failed. Thanks to the method for parrying sensor failures, it was possible to achieve a significant improvement in the performance of a small-sized aircraft engine.
Огляд методів параметричного діагностування агрегатів гідравлічних і паливних систем літальних апаратів
Authors: Ohanian Ihor , Yepifanov Sergiy
Published: August 2023

The subject of study in this article is the methods of parametric diagnostics of the technical condition of the units of an air vehicle's hydraulic and fuel systems, which make it possible to ensure the established reliability indicators of these systems throughout their entire life cycle. This work aims to analyze the existing literature on the methods of parametric diagnostics of hydraulic units, determine the basic requirements for the development of diagnostic methods for units of hydraulic, and fuel systems. The objective of the study is to classify the existing methods of parametric diagnostics, applied primarily to hydraulic systems, to analyze the advantages and disadvantages of the algorithms under consideration based on the requirements for diagnostic algorithms established by the authors, and to assess the possibility of effectively using these methodologies to diagnose the technical condition of a complex hydraulic distribution unit. The authors of this work formed the main requirements for the methods of diagnosing a hydraulic and fuel system's units based on the nature of the detected defects, the experience of using diagnostic algorithms, as well as the requirements of existing standards and scientific publications analysis. The authors developed a classification of parametric diagnostic algorithms to systematize existing works. This paper describes the main features and differences between diagnostic algorithms based on methods for identifying a mathematical model of an object and diagnostic algorithms in the space of measured parameters. Methods for forming diagnostic models of hydraulic units have been analyzed, such as the state-space model, the Hammerstein model, the Volterra model, the ARX model, and the matrix of influence coefficients. Established analysis of the application of defect identification algorithms such as a divided difference filter (DDF), a radial basis functions neural network RBF, and a cosine distance method. As a result, the advantages and disadvantages of the monitored diagnostic algorithms were identified and the main tasks for developing an algorithm for parametric diagnostics of the technical condition of a complex hydraulic distribution unit were formulated.
Аналіз можливості застосування комерційних мікротурбореактивних двигунів для високошвидкісних малорозмірних БПЛА оперативно-тактичного рівня
Authors: Khrulev Olexander
Published: August 2023

Despite the technological advances that made it possible to create serial commercial micro-turbojet engines with a thrust of up to 1.0 kN, engines of this type in the class of high-speed unmanned aerial vehicles (UAVs) weighing up to 200 kg have not yet received wide distribution. Nevertheless, the use of micro-turbojet engines continues to be considered as promising, and a large amount of work has been devoted to the study of these engines. However, existing studies often show a simplistic approach when a micro-turbojet is considered in isolation from its possible aviation application. The object of this study is micro turbojet engines for high-speed UAVs. The purpose of this study was to evaluate the effectiveness of the use of serial commercial micro turbine engines on high-speed UAVs. The task: to select a gas-dynamic calculation program, perform a mathematical modeling of the characteristics of a micro-turbojet engine, and analyze the conditions and effectiveness of the application of the considered type of engine on high-speed UAVs. Method of the study. The GasTurb14 standard program for gas-dynamic calculation of gas turbine engines was used, with the help of which gas-dynamic calculations were carried out, a structural diagram was obtained, and mathematical modeling of micro-turbojet characteristics was performed. The results. Possible manufacturers and models of engines produced by them and their equipment were identified. It was found that for the considering UAV class, the engine should have a pressure ratio in compressor in the range of 4.2-4.7, and it is advisable to choose the flight operating mode of the micro-turbojet engine at a speed of 92-95% of the maximum. It has also been determined that UAVs with micro-turbojet engines, in comparison with piston engines, easily provide the same flight range with the same fuel relative mass due to at least three times higher speed. Conclusions. The use of a micro-turbojet turns out to be more effective at a flight range of over 300 km, and at a flight speed of more than 150 m/s (540 km/h), a micro-turbojet engine provides a significant advantage over a piston engine for a number of operational and tactical tasks.
Ефективність суднових енергетичних установок з теплообмінними апаратами з трубних пучків з лунковими системами
Authors: Kuznetsov Valerii , Shevtsov Anatolii
Published: August 2023

The direction of increasing the efficiency of marine power plants by using heat exchange elements that implement intensive methods of heat transfer, which are characterized by a predominant increase in heat transfer over aerodynamic resistance, is considered. The research method is mathematical modeling of processes in power plants at the level of their individual elements – heat engine, power, and technological heat exchangers. The adequacy of the mathematical model for research the efficiency of power plants is justified by the results of verification and validation by comparing the results of calculations with the results of a physical experiment that have a discrepancy not exceeding 9.3 %. The goal of the research is to improve the economic, environmental, resource and weight-size parameters of power plants by using heat exchange elements with the intensification of the processes of convective transfer of heat and mass by using finned surfaces with dimples. Thanks to the performance of dimple systems on the edges of round pipes with spiral-ribbon finning and elliptical pipes with lamellar finning, it is possible to increase the heat transfer coefficient up to 36 %, while the resistance coefficient of the beam remains unchanged. The use of heat exchangers with the proposed heat transfer elements as part of ship power plants with low-speed engines and gas-and-steam turbine units allows to improve their economic and environmental characteristics. It was obtained that for tankers of the PANAMAX type, the increase in the efficiency of the ship's power plant is 1.3 % due to the use of elliptical surfaces with plate finning and hole systems on the ribs in the utilization boiler. The ship's EEDI index decreased by 1.7 %. For container ships with a deadweight of more than 100,000 tons, the change in these indexes was 2.5 and 2.7 %, respectively. For a marine gas-and-steam turbine plant, the efficiency increase was 2.4 %. The presented mathematical model of the power plant is characterized by positive results of approbation for constructive and verification calculations of power plants in marine energy, transport, and industry.
Технологія відновлення форми ротора гідрогенератора
Authors: Makarov Pavlo
Published: August 2023

The object of research in this article is the change in the rotor shape during the operation of hydraulic units. The subject of study in this article is the design and geometric state of the shape of a rotor with irregular geometry of hydraulic generators-engines. This study produced a three-dimensional mechanical calculation of the rotor segment for further use during strain gauge tests. Tasks: investigate the peculiarities of the rotor shape restoration technology; to describe the basic assumptions for the three-dimensional mechanical calculation of rotor deformations at the overspeed; and perform a three-dimensional calculation of rotor movements considering the main forces falling on the pole connection, which are obtained using classical methods. The methods used are: finite element method of mathematical modeling of the thermal stress state of nodes. The following results were obtained: a detailed description of the technological process of restoring the shape of the rotor using the hot wedging method is given. Three-dimensional models of the rotor segment were developed, and a three-dimensional mechanical calculation of this model was performed, as a result of which satisfactory values of the displacement of the rotor of the hydraulic generator at the overspeed were obtained, considering the recovery technology. To reconstruct the rotor rim, it is necessary to heat the rotor rim to a temperature difference between the rim and the frame of at least 60 °C. Next, the hot wedging of the rotor rim is performed with the driving of each of the driving wedges by the same amount, which ensures the creation of the necessary diametrical tension between the rim and the frame of the rotor and avoids the displacement of the rotor rim relative to the frame. The control of this process is performed using strain gauges. If necessary, it is necessary to cool the rotor rim until the temperatures of the rim and the frame of the rotor are equal. Conclusions. The scientific novelty consists of a combined approach to the evaluation of the deformation of the rotor rim after restoring its shape, which includes elements of analytical mechanical calculation and calculation in a three-dimensional setting. The presented technology for the rotor restoration process meets European requirements.
CURRENT SITUATION OF INVESTMENT MANAGEMENT IN AGRICULTURAL CHINESE ECONOMY UNDER THE BACKGROUND OF GLOBALIZATION
Authors: Sokhan Inna , Zhuoran Li
Published: August 2023

The article focuses on the management of agricultural investment and economic growth under the background of globalization. It also studies the current situation of investment management, the relationship with economic growth and the management research of agricultural economy under the background of globalization. The research results of this article provide the basis for developing better investment management programs and provide useful experience for better management of agricultural investment. Here was adopted the input-output analysis method of agricultural economy, and was made the forecast analysis of the total agricultural investment. These analyses help us to assess the benefits of agricultural investments and provide advice and decision support on management. Through this research article can better grasp the relationship between agricultural investment and economic growth under the background of globalization, and put forward the corresponding management strategies.
COUNTERMEASURES OF OVERCOMING SOCIO-ECONOMIC INEQUALITY IN ETHNIC MINORITY AREAS OF SOUTHWEST CHINA
Authors: Сохань Інна , Li Zongkeng
Published: August 2023

This paper adopts a comprehensive approach to investigate remedies to address socio-economic disparities in the ethnic minority regions of Southwest China, and constructs strategies to achieve spatially balanced economic and social progress in the area. The study has two dimensions: economic and social. First, it examines interventions in the economic domain, which includes aspects of economic efficiency, structural optimization, innovation-driven growth, infrastructure improvement, and human capital development. Second, it examines interventions in the social domain, which includes equity, governance, security, culture, and social welfare. The proposed spatial development strategies are of paramount importance in bridging the development gap between regions and urban-rural zones, and in promoting a harmonious society. These measures provide invaluable theoretical and practical implications for formulating strategic policies to promote first-class economic and social development in the ethnic minority regions of Southwest China.
TALENT MOTIVATION AS A METHOD OF SOCIO-ECONOMIC DEVELOPMENT OF PERSONNEL MANAGEMENT
Authors: Харченко Тетяна , Rong Mao
Published: August 2023

In connection with the continuous progressive development of the Chinese economy, enterprise personnel management has become an important part of social and economic development. Enterprise personnel management can promote stable talent development and job satisfaction, so it plays an important role in the sustainable development of the Chinese economy. To solve problems in the management of personnel development, it is suggested to improve and constantly innovate the management of human resources, including changing the concept of management, the motivational base, the compensatory mechanism of the impact of work results on the amount of the received reward. Based on this, this article analyzes the importance of innovations in the management of personnel development and outlines the innovative strategy of the enterprise's human resources management. The study also allows us to conclude that the construction of an effective work motivation system is directly dependent on the increase in the socio-economic level of development of the company's personnel.
СТРАТЕГІЯ УПРАВЛІННЯ ІНФОРМАЦІЙНО-КОМУНІКАЦІЙНИМ ЗАБЕЗПЕЧЕННЯМ ЗАКЛАДІВ ВИЩОЇ ОСВІТИ
Authors: Кондратенко Наталія , Лутак Віталій
Published: August 2023

Актуальність теми статті визначається провідною роллю закладів вищої освіти для майбутнього покоління фахівців та необхідності удосконалення інформаційно-комунікаційного забезпечення для підвищення якості надання освітніх послуг. У роботі визначено основні напрями формування та реалізації стратегії управління інформаційно-комунікаційним забезпеченням закладів вищої освіти. З’ясовано, що стратегія управління інформаційно-комунікаційним забезпеченням ЗВО в умовах війни та важкого соціально-економічного стану нашої країни повинна базуватися на задоволенні споживачів освітніх послуг знаннями, які вони отримують, комфортними умовами навчання та перспективами подальшої побудови власної кар’єри. Зроблено висновок, що стратегія управління інформаційно-комунікаційним забезпеченням ЗВО повинна у першу чергу базуватися на основі використанні сукупного потенціалу закладу, організаційного та методичного забезпечення прийняття результативних управлінських рішень на основі подальшої цифровізації освітнього процесу, ефективного використання ІТ-технологій, що у підсумку наддасть можливість для виходу вітчизняних ЗВО на міжнародні ринки освітніх послуг.
КУЛЬТУРНИЙ ТУРИЗМ ЯК ІНСТРУМЕНТ ВІДНОВЛЕННЯ ТА РОЗВИТКУ ІНДУСТРІЇ ГОСТИННОСТІ У ПОВОЄННИЙ ПЕРІОД
Authors: Подолян Яна , Тимошенко Ірина , Садова Наталія
Published: August 2023

Стаття присвячена дослідженню культурного туризму, як складової індустрії гостинності в Україні та світі. Гостинність є серйозним бізнесом у світових рамках, і сучасні тенденції розвитку та туристичний попит впливають на його модифікацію. Численні тенденції підкреслюють важливість сучасного туристичного бізнесу з огляду на те, що турист уже не задовольняється лише основною пропозицією в готельних та ресторанних закладах, а потребує диференційованого та персоналізованого обслуговування, яке стає головним мотивом подорожі. Своєю чергою, культурний туризм збагачує індустрію гостинності та формує інноваційні типи структур розміщення та харчування. Напрямки культурного туризму та культурні маршрути організовують заклади гостинності відповідно до духу, атмосфери та характеристик культури представленої в пункті призначення. У статті узагальнено та класифіковано види культурного туризму та культурних туристів, а також визначено вплив розвитку даного виду індустрії гостинності на розвиток регіонів. Визначено, що культурний туризм є справжнім рушієм економіки для багатьох країн. Створення туристичного довгострокового розвитку може бути здійснено лише через пропонування умов стабільної якості та просування туристичних продуктів з конкурентоспроможною ціною.
ДЕРЖАВНА ПОЛІТИКА СОЦІАЛЬНОГО ЗАХИСТУ НАСЕЛЕННЯ В СИСТЕМІ ЕКОНОМІЧНОЇ БЕЗПЕКИ УКРАЇНИ
Authors: Урба Світлана
Published: August 2023

У статті розглянуто теоретичні основи соціального захисту населення. Досліджено підходи до розуміння державної політики соціального захисту населення та особливостей її реалізації в умовах війни. Обґрунтовано актуальність та проаналізовано сучасний стан сфери соціального захисту населення. Наведено основні нормативно-правові акти та програми у сфері регулювання соціального захисту населення, які були прийняті в період воєнного стану. Аргументовано, що низька ефективність прийняття якісних управлінських рішень та забезпечення економічної безпеки держави підтверджується недостатнім рівнем фінансового забезпечення соціального захисту населення. Зазначено, що параметри ефективності державної політики соціального захисту стримує низький рівень якості життя населення, який виступає першочерговою проблемою його соціальної захищеності та недостатньої забезпеченості соціальної безпеки в системі економічної безпеки держави. Окрему увагу зосереджено на необхідності удосконалення роботи соціальних служб з використанням цифрових технологій з метою створення комфортних умов отримання соціальної допомоги категоріям населення, які її потребують. Запропоновано стратегічні пріоритети державної політики соціального захисту населення та забезпечення економічної безпеки України.
STUDY ON THE INVESTMENT APPROACHES OF RURAL REGIONAL ECONOMIC DEVELOPMENT IN CHINA
Authors: Сохань І.В. , Zhuoran Li
Published: August 2023

In the modern conditions of globalization and economic development, the management of investments in agricultural production has become an important issue in the development of China's national economy. Understanding the relevant concepts of agricultural investment, analyzing its environment, building a scientific and sound structure, determining the proper scale and implementing an effective agrarian economic investment strategy scheme are very important to promote the modernization of agricultural production processes, increase the productivity of agriculture as a sector of social production in which people use the natural conditions of the environment, rely on the physiological functions of animals, plants and microorganisms, and strengthen and control the life of organisms through labor to obtain the material products needed society and farmers' incomes. Research and improvement of the theory of management of agricultural investments can help in making management decisions, increase the efficiency of commodity producers and strengthen the stability of rural areas. This article examines in detail the theoretical foundations and practical application of agricultural investment management, with the aim of providing useful recommendations and reference materials for decision-makers in the agricultural sector by defining basic concepts, analyzing the foundations of theory and research methods. Thus, relevant concepts and main problems of agricultural investment management and theories of economic growth of rural areas by investing in the agricultural sphere were presented. Various views of the classical theory of economic growth and development of rural areas were collected; the main obstacles to the development of agricultural investment are identified, including state macro-control at various stages of regional development.
Effect of Aloe-Coating Application on Quail Egg Quality During Storage
Authors: Mardewi Ni Ketut , Suriati Luh , Janurianti Ni Made Defy
Published: August 2023

Consumption of quail eggs is currently increasing. Quail eggs not only taste good but also contain protein, fat, carbohydrates, and ash. Despite having a shell as a natural protector, quail eggs are very fragile. The surface of the eggshell has small pores that allow the mass transfer. Permeation causes changes in viscosity, weight loss, and albumin liquefaction during storage. Coating application can maintain the internal freshness of eggs by closing the pores to reduce mass transfer and be an anti-microbial. Coating of aloe vera gel (Aloe-coating) has very potential because it contains polysaccharides and bioactive compounds glucomannan and acemannan. The purpose of this study was to determine the concentration of Aloe-coating to maintain egg viscosity and pH and to determine its effect on the quality of quail eggs during storage. The research design used a completely randomized design with a factorial pattern with three repetitions. The concentration of Aloe-coating is the first factor (100%, 75%, 50%, 25%). The second factor is storage time (1, 2, 3, 4 weeks). The observed variables were water content, weight loss, acidity, viscosity, yellow color, egg white height, and Haugh Unit. The research data were analyzed quantitatively using the analysis of variants. The results showed that Aloe-coating had a very significant effect on water content, weight loss, pH, viscosity, yolk color, and quail egg haugh unit. The best concentration of Aloe-coating to maintain the quality of quail eggs is 100%. The use of Aloe-coating can maintain the quality and extend the shelf life of quail eggs.

How to Cite: Ni Ketut Mardewi, Luh Suriati, Ni Made Defy Janurianti, 2023. "Effect of Aloe-Coating Application on Quail Egg Quality During Storage." Journal of Agriculture and Crops, vol. 9, pp. 472-478.
Sizing biological cells using a microfluidic acoustic flow cytometer
Authors: Strohm Eric M. , Gnyawali Vaskar , Sebastian Joseph A. , Ngunjiri Robert , Moore Michael
J. , Tsai Scott , Kolios Michael
Published: August 2023

We describe a new technique that combines ultrasound and microfluidics to rapidly size and count cells in a high-throughput and label-free fashion. Using 3D hydrodynamic flow focusing, cells are streamed single file through an ultrasound beam where ultrasound scattering events from each individual cell are acquired. The ultrasound operates at a center frequency of 375 MHz with a wavelength of 4 μm; when the ultrasound wavelength is similar to the size of a scatterer, the power spectra of the backscattered ultrasound waves have distinct features at specific frequencies that are directly related to the cell size. Our approach determines cell sizes through a comparison of these distinct spectral features with established theoretical models. We perform an analysis of two types of cells: acute myeloid leukemia cells, where 2,390 measurements resulted in a mean size of 10.0 ± 1.7 μm, and HT29 colorectal cancer cells, where 1,955 measurements resulted in a mean size of 15.0 ± 2.3 μm. These results and histogram distributions agree very well with those measured from a Coulter Counter Multisizer 4. Our technique is the first to combine ultrasound and microfluidics to determine the cell size with the potential for multi-parameter cellular characterization using fluorescence, light scattering and quantitative photoacoustic techniques.
Biomedical nanobubbles and opportunities for microfluidics
Authors: Paknahad Ali A. , Kerr Liam , Wong Daniel A. , Kolios Michael , Tsai Scott
Published: August 2023

The use of bulk nanobubbles in biomedicine is increasing in recent years, which is attributable to the array of therapeutic and diagnostic tools promised by developing bulk nanobubble technologies. From cancer drug delivery and ultrasound contrast enhancement to malaria detection and the diagnosis of acute donor tissue rejection, the potential applications of bulk nanobubbles are broad and diverse. Developing these technologies to the point of clinical use may significantly impact the quality of patient care. This review compiles and summarizes a representative collection of the current applications, fabrication techniques, and characterization methods of bulk nanobubbles in biomedicine. Current state-of-the-art generation methods are not designed to create nanobubbles of high concentration and low polydispersity, both characteristics of which are important for several bulk nanobubble applications. To date, microfluidics has not been widely considered as a tool for generating nanobubbles, even though the small-scale precision and real-time control offered by microfluidics may overcome the challenges mentioned above. We suggest possible uses of microfluidics for improving the quality of bulk nanobubble populations and propose ways of leveraging existing microfluidic technologies, such as organ-on-a-chip platforms, to expand the experimental toolbox of researchers working to develop biomedical nanobubbles.
Diamagnetic droplet microfluidics applied to single-cell sorting
Authors: Buryk-Iggers Stephanie , Kieda Jennifer , Tsai Scott
Published: August 2023

The heterogeneity of diseased tissue causes major challenges in the detection and treatment of disease. Such challenges have motivated the development of tools for single-cell isolation and analysis. However, many cell isolation methods in microfluidics rely on the use of cell-labeling steps or expose cells to potentially harmful forces. Here, we present a microfluidic method for label-free control of cell-encapsulating biocompatible droplets using negative magnetophoresis. Our system is distinguished from previous microfluidic diamagnetic sorting approaches by the encapsulation of the cells inside droplets, which isolates the cells from the magnetic continuous phase. The droplet phase is comprised of cells suspended in their growth culture medium, and all of the magnetic content is contained in the oil-based continuous phase. At a flow-focusing junction, empty droplets and cell-encapsulating droplets are both generated and surrounded by the magnetic continuous phase. Cell encapsulation produces a size distinction between empty droplets and cell-encapsulated droplets. Through the application of a permanent magnet to the system, diamagnetic size-based sorting of empty droplets from cell-encapsulated droplets is achieved with a purity of ∼84% in a single pass. Additionally, since the encapsulated cells are completely isolated from the magnetic content in the continuous phase, 88% cell-viability is observed after a two-hour incubation period. If combined with a single-cell assay, this system can provide label-free isolation of viable cells at a high purity for subsequent downstream analysis.
Changing the Subject: Redefining Access to Justice
Authors: Young Donna
Published: August 2023

"This inaugural edition of the Toronto Metropolitan University Law Review (TMU Law Review) represents a milestone for the Lincoln Alexander School of Law. With a mission to diversify legal scholarship, the law journal expands the law school’s reach beyond its core academic program and furthers its commitment to diversity, equity and inclusion. By disseminating cutting edge articles on a variety of legal topics, the journal aims to increase the depth and breadth of scholarly discourse and enhance an already rich body of legal literature within Canada and beyond. Authors are members of the legal academy and profession whose perspectives on contemporary legal and social issues merit broader exposure. Indeed, providing an outlet to those whose perspectives have been underrepresented in legal publications will be a primary goal of the journal, which will go some way towards changing the subjects of legal analysis."
Pengaruh Karakteristik Sosial Demografi, Kondisi Ekonomi, dan Lingkungan terhdap Kebahagiaan di Indonesia
Authors: Kosali Ahmad Yani
Published: August 2023

Overview So far, measuring the country's development  still focuses on economic indicators. Despite the fact that there is still the assumption that there is “better wealth for a better lifestyle,” the concept of measuring well-being is expected to complement  current financial metrics.Bio The phial hypothesis explained how environmental conditions affect well-being. Air and water pollution in Indonesia is getting worse and may affect well-being as an indicator of doing right. It aims to explore the impact of sociolect-demographic, economic and environmental characteristics on well-being in Indonesia. The technique used in this test is ordered logit regression. The results show that people tend to be happier when they live in places where they have higher incomes, are married, are in better health, are better educated, have better processes, and have less polluted water and air. I was. Age has a pronounced effect on U-shaped happiness, with the lowest predicted age being 49 for her. An interesting finding, on the other hand, is that the unemployed tend to be happier than the employed. These findings encourage governments to pay special attention to improving well-being statistics, developing non-textiles such as health, education and employment, and strengthening efforts to protect the environment.
Analisis Perputaran Modal Kerja Pada PT. Lippo Karawaci, Tbk
Authors: Nulkarim Riziku , Muniarty Puji
Published: August 2023

This study aims to determine and analyze the amount of working capital turnover at PT. Lippo Karawaci, Tbk. This type of research is descriptive using secondary data sources. The research instrument used is a list of tables containing sales data, current assets, current liabilities, at PT. Lippo Karawaci, Tbk for 10 years, from 2012 to 2021. The population used in this research is all of the financial statements of PT. Lippo Karawaci, Tbk since being listed on the IDX from 1996 to 2021, namely for 25 years. The sample is 10 years from 2012 to 2021 using a purposive sampling technique. Data collection techniques using documentation and literature study. The data analysis technique uses a one-sample t-test. The results showed that the working capital turnover at PT. Lippo Karawaci, Tbk more than 6 times than expected or good.
Workshop Pengembangan Media Pembelajaran Digital Animasi 3 Dimensi untuk Pembelajaran Numerasi Lintas Mata Pelajaran
Authors: Widodo Suprih , Rahayu Puji , Andrian Rian , Fauzi Ahmad
Published: August 2023

Media pembelajaran memiliki peran yang vital dalam sistem pembelajaran. Tujuan dari kegiatan pengabdian pada masyarakat ini adalah untuk melatihkan kemampuan guru dalam mengembangkan media animasi 3 dimensi sebagai salahsatu alternatif yang bisa dikembangkan guru dalam pembelajaran numerasi lintas pelajaran. Kegiatan ini diikuti oleh 10 orang guru sekolah dasar di Kabupaten Purwakarta Provinsi Jawa Barat. Metode yang digunakan adalah training development life cycle. Hasil dari kegiatan ini adalah media pembelajaran berbasis animasi 3 dimensi yang dikembangkan dengan bantuan Ms. Office Power Point dan Animasi 3 Dimensi dengan teknik motion stop animation, yang akan diterapkan oleh guru dalam pembelajaran numerasi lintas mata pelajaran non matematika.
Translation of Traditional Chinese Crafts Culture in the New Media Environment: A Case Study of Subtitle Translation in Li Ziqi's YouTube Short Videos
Authors: You Yueyue
Published: August 2023

Nowadays, the subjects of external communication are increasingly diversified, and China's new media forms of external communication are rich and varied. In contrast to the authoritative narrative style and tone of official media, short videos have emerged as an important medium for international communication in the new era. With characteristics such as fragmented content, entertainment value, popularity, and colloquial language, they have achieved significant dissemination effects on global social media platforms like YouTube. Therefore, more and more unofficial self-media figures are attempting to share unique Chinese stories and culture through short videos on YouTube, and Li Ziqi is one of them. Li Ziqi has amassed 17.6 million subscribers on YouTube, with a total of 128 videos published and over 2.9 billion views at the time of data collection (2023.07.02). Her short videos showcase her leisurely daily life in natural landscapes, diverse culinary culture, and traditional Chinese crafts culture, among other aspects of traditional culture. At present, Li Ziqi's "Traditional Crafts" series has become one of the important platforms for the external dissemination of Chinese traditional craft culture. This study takes the translation of the subtitles in four short videos from Li Ziqi's "Traditional Crafts" series on the YouTube platform as the research object. From the perspective of the new media environment, it analyzes the external communication of traditional Chinese craft culture in the new era and provides a summary of reflections.
Sexual Behavior in Students of Senior High School Gabungan Jayapura City, Papua
Authors: Hursepuny Ivanachela , Fatiah Mona Safitri , Woapari Beery I. S , Tambing Yane , Nurdin Muhammad Akbar
Published: August 2023

Perilaku seksual berisiko di kalangan pelajar di Kota Jayapura sudah sangat mengkhawatirkan, dimana dari studi pendahuluan yang dilakukan ditemukan sekitar 13,3% pernah melakukan free sex. Tujuan dari penelitian ini adalah: melihat faktor risiko perilaku seksual pada pelajar SMA Gabungan Kota Jayapura, Papua. Penelitian ini berdesain cross sectional dengan waktu penelitian ± bulan terhitung bulan April – Agustus 2021, dengan sampel penelitian adalah Semua Siswa/i SMA Gabungan kelas X dan XI sejunlah 157 orang, sedangkan sampel pada penelitian sejumlah 127 orang. Data penelitian ini menggunakan data primer dengan menggunakan isntrumen penelitian berupa kuesioner yang diadaptasi dari kuesioner penelitian Survey Demografi Kesehatan Indonesia (SDKI) Remaja 2017 berupa variabel: perilaku seksual, pengetahuan tentang HIV, keterpaparan sumber informasi, perilaku pacarana dan perilaku konsumsi alkohol. Hasil pada penelitian ini di analisis sampai dengan analisis bivariat menggunakan software SPSS 24. Hasil penelitian ini menemukan jika, perilaku pacarana dan perilaku konsumsi alkohol berhubungan dengan perilaku seksual pada pelajar SMA Gabungan Kota Jayapura, Papua. Penelitian ini merekomendasikan perlunya sosialisasi yang dilakukan oleh Dinas Kesehatan Kota  terkait dampak free sex pada remaja ke sekolah-sekolah sehingga adanya peningkatan pengetahuan tentang bahaya free sex yang nantinya dapat mencegah penyebaran HIV di kota Jayapura
KORELASI EKSPRESI Ki67 DAN INDEKS MITOSIS PADA PASIEN KANKER PAYUDARA DI RSUD ABDUL WAHAB SJAHRANIE TAHUN 2022
Authors: Putri Dian Agustin Retnowati , Raharjo Eko Nugroho , Azahra Sresta
Published: August 2023

Kanker payudara merupakan salah satu penyakit keganasan yang disebabkan oleh kelompok sel yang tumbuh secara abnormal pada jaringan payudara. Ki67 adalah protein  yang ditemukan di dalam inti sel yang berhubungan dengan proses proliferasi sel dan faktor prognosis. Mitosis merupakan bentuk pembelahan sel, dikendalikan oleh gen di dalam sel. Penilaian indeks mitosis digunakan untuk mengetahui persentase pada populasi sel tumor yang sedang mengalami pembelahan. Tujuan penelitian untuk mengetahui hubungan ekspresi Ki67 dan indeks mitosis pada pasien kanker payudara. Sampel penelitian sebanyak 50 sampel data hasil pemeriksaan pasien kanker payudara RSUD Abdul Wahab Sjahranie tahun 2022 dengan teknik purposive sampling. Jenis penelitian observasional analitik dengan pendekatan cross sectional. Analisis data dengan uji Chi square. Hasil penelitian didapatkan penderita kanker payudara usia 41-60 tahun sebanyak 35 pasien (70,0%). Hasil ekspresi Ki67 rendah (low expression) sebanyak 4 pasien (8,0%), ekpresi Ki-67 sedang (intermediate expression) sebanyak 22 pasien (44,0%), dan ekspresi Ki67 tinggi (high expression) sebanyak 24 pasien (48,0%). Sedangkan penilaian indeks mitosis jumlah pasien terendah dengan skor 1 sebanyak 9 pasien (18,0%), skor 2 sebanyak 17 pasien (34,00%) dan skor 3 dengan sebanyak 24 pasien (48,0%). Hasil perhitungan statistik, terdapat hubungan bermakna antara ekspresi Ki67 dan indeks mitosis p value < α(0,05) yaitu 0,014.
PERSPECTIVAS FAMILIARES EM ETNOGRAFIA: OS “GATOS” E “JOGADORES DE EMPRESÁRIOS” NA BASE DO FUTEBOL GAÚCHO
Authors: Boehl Walter , Myskiw Mauro , Castro Ignácio Mauro
Published: August 2023

O mundo do futebol é complexo e envolve práticas questionáveis que afetam a carreira dos jogadores, especialmente nas categorias de base. Uma das questões mais controversas é a relação entre empresários e jogadores jovens. Este artigo, oriundo de uma pesquisa de mestrado, realizada entre os anos de 2018 e 2020, em espaços futebolísticos do sul do Brasil, apresenta uma análise etnográfica do fluxo de jogadores de categorias de base nos circuitos de formação de jogadores, discutindo as particularidades dos ‘jogadores de empresários’ e dos ‘gatos’. O objetivo é refletir sobre a construção de significados como fenômeno cultural esportivo e suscitar o debate em torno dessas questões.
Artificial Intelligence in Medicine: Potential Benefits and Risks
Authors: Haque Md Azizul
Published: August 2023

Abstract not available

TAJ 2022; 36: No-1: I-II
Histomorphological Study of Different Ovarian Lessons in a Tertiary Care Hospital
Authors: Sarkar Anindita , Asafudullah SM , Khanam Khadiza , Sultana Arefa , Islam Nazifa , Sultana Samrose , Sarkar Sunandita
Published: August 2023

Objective: The present study is to ascertain the relative frequency, histologic types, and age distribution of both neoplastic and non–neoplastic ovarian lesions in the Rajshahi medical college hospitals and compare the results with similar studies in other regions of this country and abroad.

Methods & Materials: This cross-sectional study was conducted in the Department of Pathology, Rajshahi Medical College, over one year from January 2021 to December 2021. A total of 144 cases of ovarian lesions were included in this study. Inflammatory conditions and developmental anomalies were excluded.

Result: Out of 144 cases of ovarian masses studied, 104 (72%) were neoplastic. The common types were Surface epithelial tumors (70%), germ cell tumors (23%), and sex-cord stromal tumors (7%). The age range of ovarian tumors was 5 to 70 yrs, and the highest incidence was between 21-50 yrs. Most of the ovarian tumors were bilateral (85%).

Conclusion: Varying types of both non-neoplastic and neoplastic ovarian lesions were seen. Benign tumors were more common than malignant tumors in all age groups. Surface epithelial cell tumors, followed by germ cell tumors, were the most common tumor. Serous cystadenoma was the most common tumor. Tumour types varied in different age groups.

TAJ 2022; 36: No-1: 17-22
Serum Cholinesterase Level in Patients with Cirrhosis of Liver and Its Correlation with the Severity of the Disease
Authors: Rashid Md Mamun ur , Islam Md Shafiqul , Parvin Most Firoza , Saifullah ANM , Shil Bimal Chandra , Rahman Md Habibur , Sultana Mst Musarrat
Published: August 2023

Background: Serum cholinesterase mainly comes from the liver, a sensitive indicator of the synthetic capacity of the liver. It can be used as a prognostic marker for cirrhosis.

Objectives: To measure the serum cholinesterase level in cirrhotic patients and to correlate its level with the severity of the disease as per the Child-Pugh score.

Methodology: This cross-sectional study was conducted in the Department of Gastroenterology, Sir Salimullah Medical College Mitford Hospital, Dhaka, Bangladesh, from January 2018 to December 2018. Fifty adult patients with cirrhosis of the liver were enrolled. Fifty healthy individuals were also taken to compare serum cholinesterase levels. Cirrhotic patients were grouped strictly into A, B, and C classes, as per the Child-Pugh score. Serum cholinesterase level was measured in all participants. The correlation between cholinesterase level and the severity of the disease was analyzed.

Result: Mean age of the patients was 47.42 ± 12.40 years and 47.22 ± 11.99 years in cirrhotic patients and healthy group, respectively. The number of patients in the Child-Pugh A, B, and C subgroups was 12 (24%), 20 (40%), and 18 (36%), respectively. The mean serum cholinesterase level was 2938 ± 1561 U/L in cirrhotic patients and 9036 ± 2024 U/L in the healthy group. Serum cholinesterase level in different Child-Pugh class was 4740 ± 1046 U/l (Child A), 3157 ± 1161 U/l (Child B), and 1493 ± 500 U/l (Child C). Serum Cholinesterase was positively correlated with serum albumin and negatively correlated with bilirubin, prothrombin time, and INR. A negative correlation was found between serum Cholinesterase level and the severity of the disease.

Conclusion: Serum cholinesterase level was low in cirrhotic patients, and its level was inversely correlated with the severity of the disease. Thus it can be used as a prognostic marker of cirrhosis. However, further study with a large sample size could explain this more precisely.

TAJ 2022; 36: No-1: 33-40
Study on Efficacy and Safety of Terbinafine Vs. Itraconazole in the Treatment of Tinea Pedis
Authors: Kabir Md Humayun , Khan Md Abdul Latif , Khan Md Shirajul Islam , Karim A T M Rezaul , Rahman Md Mostafizur , Jamil Ahmed Masiha
Published: August 2023

Background: Tinea pedis is a dermatophytosis of the feet usually occurs between the toes with the webspace between the fourth and fifth digits but, in many cases, may appear as an extensive pattern on the bottom and sides of the feet. Terbinafine and itraconazole were evaluated with the efficacy/effectiveness and toxicity in the systemic treatment of Tinea pedis and compared with each other.  Objective: To compare the efficacy and safety of terbinafine vs. itraconazole in treating tinea pedis.

Materials and Methods: A total of 50 patients were selected, and they were divided into groups (group-A and group B), each of which included 25 patients. Group A was given oral Terbinafine 250 mg daily for two weeks. Group B was given oral Itraconazole 200mg daily for the same duration. Patients were observed for the efficacy and side effects of the trial medicines. A baseline complete blood picture, liver and renal function test, and urine analysis were done and repeated frequently during therapy.

Results: Most patients were in the fourth decade in both groups, and the male-to-female ratio was almost 4:1. Two groups of people were studied: group-A with terbinafine 250 mg daily and group B with itraconazole 200 mg daily for 14 days. Evaluated weekly during treatment and 02 weeks after cessation of therapy, and finally on 08th week to see the clinical improvement and adverse effects. The clinical response was found in chronic hyperkeratotic type: 08/08, 08/08; chronic interdigital type: 07/07, 07/06; vesico-bullous type: 06/05, 06/05; Mixed type: 04/03, 03/02 in group-A and group-B respectively. On average, 92% clinical improvement was found in group-A and 84% in group B. Most patients had nausea (20.0%) followed by 08% diarrhea in group A. On the other hand, in group B, most patients had nausea (28.0%), followed by 4.0% fatigue and 4.0% diarrhea, and only 01 patient found elevated liver enzyme but did not exceed the upper limit. 80% of patients in the terbinafine group had transient, mild to moderate nausea.

Conclusion: No significant differences in efficacy and toxicity were found between terbinafine and itraconazole groups. Terbinafine may represent a good alternative for treating Tinea Pedis in patients who cannot take itraconazole or other available drugs due to contraindications.

TAJ 2022; 36: No-1: 75-82
CT Measurement of Maxillary Sinus Volume Among the Population of Rajshahi District in Bangladesh
Authors: Afrin Sadia , Rabbi DHM Fazle , Mustafa Rashed , Ahmed Wali , Afroze Akhtari
Published: August 2023

Background: The volumetric measurement of the maxillary sinuses is essential in assessing the incidence of sinusitis and cancer and measuring the intimate relationship between teeth and maxillary sinuses. There have been reports in multiple studies that there is racial variation concerning age and gender. This study aims to determine whether the sinus volume of males and females differ and its relation to age.

Methods: This descriptive observational study was carried out among 100 respondents between the age of 11- 60 years who were residing in Rajshahi during the study period of one year, i.e., January 2018 to December 2018. The data has been collected from the Department of Radiology and Imaging of Rajshahi Medical College Hospital (RMCH) from the patients who had undergone CT scan examinations. The measurements were directly taken from a computer provided with an electronic caliper. After that, the sinus volume was calculated manually using the following formula (height x width x depth x 0.5). The quality of the data was obtained diligently, and ethical issues were properly maintained in all the steps of this study.

Results: There were 50 males and 50 females, ranging from 11 – 60 years of age, where the mean (± SD) age was 36.7 (± 14.8) years. The mean (± SD) volume of the maxillary sinus in the male group was 17 (± 4.6) cm3 for the right side and 17.5 (± 4.7) cm3 for the left side, which was significantly more than the female group, 14.7 (± 3.7) cm3 for the right side and 15.1 (± 3.7) cm3 for the left side (p = 0.031). Concerning age, the distribution of maxillary sinus volume showed the highest values between 21-30 years of age, and then it decreased both on the right and left side; this finding was found to be statistically significant (p = 0 .018).

Conclusion: This study provides salient information regarding maxillary sinus volume among the people of the Rajshahi district of Bangladesh. This study's results will help establish a reference dataset regarding anatomical measurements of the maxillary sinus.

TAJ 2022; 36: No-1: 83-87