bluuebunny/crossref_metadata_2025 huggingface dataset:
Radial Clearance in Gear Pump Hydraulic Systems of Auto and Tractor Machinery Forming Features
Authors:   Central Ukrainian National Technical University, Kuleshkov Yuriy , Krasota Mykhailo ,   Central Ukrainian National Technical University, Rudenko Timofey ,   Central Ukrainian National Technical University, Osin , Ruslan ,   Central Ukrainian National Technical University, Evseichik Yuriy ,   National Transport Universit
Published: December 2022

The research goal is the analysis of the existing radial clearance forming method in gear pump details connection “body – gear teeth”, which provides the minimal size of radial clearance with the low accuracy of manufacturing details and offers another rational method of radial clearance creating. In this research was considered creating radial clearance between body and gears of gear pump hydraulic systems of auto and tractor machinery. The technology of gear pump manufacturing after pump folding provides it's enabling on a special stand in order to disability verification. During the period of enabling, as mentioned before, gear teeth cutting into the body happens with forming a so-called «bed», which must provide a radial clearance seal. Given research results of way of radial gear pump clearance forming influence, which is used in hydraulic systems of auto and tractor machinery, gears cutting in pump body during enabling for technical characteristics. Considered the main advantages and disadvantages of this method, and found, that existed way of radial clearance forming by cutting gear into the body, today does not comply with the requirements for pumps. Using the method of gear cutting negatively impacts the supply rate and pump durability. Offered a new way of radial clearance forming, which consists of getting a minimal radial clearance between gears and body due to more accurate gears manufacturing top diameter. This method does not provide gears cutting into the pump body, which increases pump durability. An effective method of radial clearance forming is more accurate manufacturing and folding pump details. The results of experimental research show that increasing radial clearance to certain sizes does not influence on pump supplying rate significantly.
Investigation of the Stress-strain State of Ion-nitrogen-coated Specimens Under Conditions of Isothermal and Thermocyclic Creep by Finite Element Analysis
Authors:   National Academy of sciences of Ukraine G.S. Pisarenko institute for problems of strength, Rutkovskіy Anatoly , Markovych Sergiy ,   Central Ukrainian National Technical University, Myhajlyta Sergiy ,   Central Ukrainian National Technical University
Published: December 2022

One of the advanced methods of increasing the thermal stability of the pistons of internal combustion engines is ionic nitriding (ion-plasma nitriding). At the same time, the study of the stress - strain state of a sample of aluminum alloy with heat - protective diffusion ion - nitrided layers under conditions of thermocyclic loading (simultaneous action of load and temperature) is an urgent task. The application of the finite element analysis method makes it possible to predict the operation of the parts of the cylinder-piston group, namely the time and place of the crack when the load and temperature change. When calculating the stress-strain state, the peculiarities of their geometric parameters, properties of structural material, type of calculation (static, thermal, etc.), and conditions of force and temperature load acting on them were taken into account. The calculation was performed using real experimental samples. The method of calculating the stress-strain state of the composition "base - coating" taking into account operational and technological factors consists of several stages: solving the problem of non-stationary thermal conductivity to determine the residual stresses resulting from coating; determination of stresses from power and temperature load; obtaining the stress-strain state by the method of superposition. Using the finite element analysis method, the stress-strain state of the aluminum sample was evaluated, both without hardening and with a heat-protective diffusion ion-nitrided surface layer from simultaneous exposure to load and temperature, namely under conditions of thermocyclic creep. To more accurately determine the equivalent stresses, the calculations were performed on 1/8 of the sample. Comparative evaluation of the stress-strain state of 1/8 of the sample of aluminum alloy AL21 and with a reinforced surface layer was performed using the software package NASTR. Thus, based on the analysis of the stress - strain state of the aluminum alloy sample with heat - protective diffusion ion - nitrided layers under thermocyclic loading (simultaneous action of load and temperature) it is established that a significant part of equivalent stresses is perceived by the strengthened surface layer. This confirms the increase in the resistance of the composition "base-coating" of both isothermal and thermocyclic creep. In addition, with the help of the finite element analysis method, it is possible to predict the operation of the parts of the cylinder-piston group, namely the time and place of the crack when the load and temperature change.
Increasing the Safety Margin of Threaded Connections Operating Under Variable Loads
Authors:   Central Ukrainian National Technical University, Nevdakha Yurii , Pirogov Volodymyr ,   Central Ukrainian National Technical University, Nevdakha Nataliia ,   Central Ukrainian National Technical University, Olijnichenko Liubov ,   Central Ukrainian National Technical University, Vasylkovsky Mykhailo ,   Central Ukrainian National Technical University
Published: December 2022

One of the most common types of plug-in connections are threaded connections. In any machine, unit, the number of parts of threaded connections (bolts, studs, nuts, washers, etc.) is calculated by dozens and hundreds of pieces. It follows from this that the issue of designing and calculating threaded connections is of great importance in the design of machines and devices. One of the most important elements of bolts and screws is the thread, which is the surface of the protrusion formed during the helical movement of an arbitrary flat contour on the side surface of a cylinder or cone. Threaded connections are widely used in various mechanisms (internal combustion engines, etc. products). Their use is due to simplicity, high load-bearing capacity, reliability, as well as the convenience of connecting and disconnecting parts. The calculation of tightened threaded connections operating under alternating stresses is a check calculation. Based on the simplified statement of the problem, the preliminary dimensions of the main elements of the threaded connection are determined. Then the layout of the connecting node is carried out, and after the design is fully determined, they begin to perform the verification calculation. In recent times, we have seen an increase in the interest of designers in the calculations of threaded connections operating under variable stresses. This is explained by the fact that in most mechanisms, in particular in the automotive industry, threaded connections work under variable stresses, but an incorrectly determined margin of strength of threaded connections leads to breakdowns and destruction of mechanisms. Thus, there is a need to study more accurate calculation formulas for determining the margin of strength of threaded connections, which is the result of a verification calculation.
Analysis of Methods of Error Correction of Measuring Devices
Authors:   National Aviation University, Kvashuk Dmytro , Yegunko Vasyl ,   National Aviation University
Published: December 2022

The article is devoted to the study of methods for correcting errors of measuring devices. Features of the application of correction of multiplicative and additive component errors are considered. The article investigated the methods of correcting the errors of the measuring instruments as part of the measuring systems. This made it possible to find ways to improve the accuracy of measurements. Sample signal methods and test methods based on the functional transformation of measuring devices during a cycle of specially organized measurements were studied. An analysis of various error correction methods caused by static and dynamic factors has been carried out. Literary sources were studied, which consider ways to eliminate the influence of instrumental error. Thus, to eliminate the instrumental error, separate correction coefficients representing the relative values of the probabilities of erroneous decisions were considered. During the study, inverse mathematical models of measuring channels were considered, as which Lagrange interpolation polynomials are used. A method of eliminating the influence of the parameters of the additive and multiplicative component of the measurement on the accuracy of the test method is proposed by creating additional inverse converters and a system of equations describing the transformation of the input values of the measuring converter in each measuring cycle, which can be used to obtain the adjusted value of the measured value. The effectiveness of this improvement for use as part of the information and measurement system is substantiated. It is shown that the most important directions for improving the efficiency of such a system are the provision of the necessary experimental base, as well as the accuracy of setting correction algorithms.
Overview of Modern BIOS Interfaces and Features of Its Configuration
Authors:   Central Ukrainian National Technical University, Minailenko Roman , Polishchuk Liudmyla ,   Central Ukrainian National Technical University, Konoplitska-Slobodenyuk Oksana ,   Central Ukrainian National Technical University
Published: December 2022

The article provides an overview and analysis of modern BIOS interfaces. It is shown that due to the large number of hardware and software manufacturers, there are many types of BIOS that differ from each other in terms of interface and function names. Different BIOSes offer the user a different set of options for configuring the system: Some of these options are more than enough, while others do not provide such options at all. Since modern computers are the most complex electronic devices, consisting of dozens of components, each of which in turn is built from millions of components, any mistake can lead to a failure or complete failure of the computer. If the BIOS firmware requires certain skills and knowledge, then the initial settings are quite within the power of the average user. Moreover, understanding the rules of computer operation is necessary for its competent use. You need to pay attention to a few simple tips: – before starting system setup using BIOS, you need to save all important information; – be sure to remember the set and changed value of the parameter. In case of problems in the system, it will be possible to return the previous value; – do not change unknown parameter values, but specify their values beforehand; – do not change several unrelated parameters at the same time, because in the event of a failure it will be difficult to determine which value was set incorrectly; – avoid editing the Hard Disk Utility section found in outdated BIOS versions. This can damage a modern hard drive. It is extremely important to follow these rules when updating the BIOS: - always read the documentation for the board. Most often, if the board supports work with some advanced flashing technology, the process of working with it is clearly described in the documentation; - often a readme file is added to the bin file with the firmware, which lists the differences between this version of the firmware and the previous ones. Be sure to study this information before turning to the computer and looking for new options in the BIOS; - perform the procedure in the most stable conditions, especially when it comes to power supply - it is preferable to use an uninterrupted power source; – if the system is "overclocked", it is necessary to return it to normal mode; – if problems occur during the BIOS update process, do not turn off the computer in any case. It is necessary to repeat the process or overwrite the old image that was saved first. If this does not help, you need to contact specialists to replace the chip itself, which contains the BIOS; - to protect against failed firmware, it is recommended to also save the utility itself and the image to the boot disk.
Features of Serial Interface Adapter Programming Using an Electronic Emulator
Authors:   Central Ukrainian National Technical University, Minailenko Roman , Buravchenko Kostiantyn ,   Central Ukrainian National Technical University, Reznichenko Vitalii ,   Central Ukrainian National Technical University
Published: December 2022

The article discusses the features of serial interface adapter programming using an electronic emulator. Emulators have been shown to enable research and analysis of relevant systems or devices. A demonstration experiment does not exhaust all the possibilities of active perception of the studied phenomenon by students and does not always ensure that they obtain quality knowledge, since it is only observed, and not carried out themselves. Therefore, demonstrations involving emulator programs should be supplemented by students performing laboratory work with their help. The software emulator allows you to carry out relevant work independently (outside the classroom), without the involvement of a teacher. This makes it possible to expand the field of connection between theory and practice, to accustom students to independent research work. In addition, the possibility of conducting experiments remotely from educational institutions points to the prospect of using emulators for distance learning. The implementation of information and educational technologies in educational institutions of Ukraine is one of the main factors in training a high-quality specialist. The most characteristic feature of education at the current stage of development is its informatization, due primarily to the spread of modern computer technology and software in educational institutions, the use of Internet capabilities, the acquisition and accumulation of experience by specialists in the use of information technologies (IT) in their activities. Software models in general make it possible to organize a high-quality educational process of training specialists in computing and computer systems.
The Effect of Graphite on the Physical and Mechanical Characteristics and tribological Properties of Secondary Polyethylene
Authors:   Dnipro State Agrarian and Economic University, Derkach Oleksii , Makarenko Dmytro ,   Dnipro State Agrarian and Economic University, Muranov Yevhen ,   Dnipro State Agrarian and Economic University
Published: December 2022

The purpose of the work is to study the influence of graphite on the physical and mechanical characteristics and tribological properties of secondary polyethylene. For this, a study of the physical and mechanical characteristics and tribological properties of the original secondary polyethylene on PCM based on it was carried out. The influence of the concentration of graphite in secondary polyethylene on the value of strength stress and relative elongation under tension at the maximum load and destruction of the samples was determined. It was established that the optimal concentration of graphite should not exceed 2 wt. %. An increase in the volume of the filler in the matrix leads to a significant decrease in the physical and mechanical characteristics of the obtained materials. It was established that the introduction of graphite into the structure of secondary polyethylene, regardless of its volume, leads to an increase in the microhardness of the obtained PCM. It was found that the temperature in the vicinity of friction, under the condition of friction without lubrication on steel 45 and the selected modes, did not exceed 69 ºС. An increase in linear speed above 0.5 m/s or pressure above 1 MPa leads to an increase in the temperature in the friction zone to 72...73 ºС, which is critical for polyethylene and leads to catastrophic wear of the samples. It was established that under the selected modes of friction, linear speed of sliding and pressure do not have a significant effect on the amount of wear and tear. The resulting polymer composite provides performance under the condition that the pressure does not exceed 1 MPa, and the linear speed is up to 0.5 m/s. For use in mechanisms and machines that work in friction conditions according to the criterion PV ≤ 0.5 MPa • m/s, it is possible to recommend the introduction of 2% by mass. graphite into the structure of secondary polyethylene. The introduction of graphite in the amount of up to 2% by mass. will allow to stabilize and moderately increase the strength characteristics of the obtained material, in comparison with unfilled polyethylene.
ANALYSIS DOMINANT OF FACTORS INFLUENCE IN DECLINE COMPANY LIQUIDITY (Study PT.Pelabuhan Indonesia Surabaya Branch)
Authors: Taurista Ditarosa
Published: December 2022

This study to determine the most dominant factor affect the decline of liquidity PT.Pelabuhan Indonesia Surabaya branch for five years (2010-2014) . The analy method used are source analysis and use of capital and cash flow as well as regression and correlation analysis. The result showed tthet the most dominant factor influenced the decrease of liquidity company ( Study Pt.Pelabuhan Indonesia Surabaya Branch) is a cash/bank factor. Technique of data collection is done by interview and interview in free and direct with competent parties. In addition, to obtain written data is done by requesting directly from the source in accordance with the needs.Based on the formulation of the problems and hypotheses that have been proposed, the method of analysis used in the discussion of this paper is the Regression and Correlation Analysis. Regression and correlation analysis is used to see the direction of the relationship and the influence of the relationship between each other, ie between the amount of net working capital (Y) as the dependent variable to the independent variable consisting of cash / bank (X1), accounts receivable (X2), inventory X3), and current liabilities (X4), used multiple linear regression analysis and Pearson correlation.
The Influence of Profitability Ratio To Share Price On Telecommunication Company Listed In Indonesia Stock Exchange Period 2013-2015
Authors: Mu’tamaria Mu’tamaria
Published: December 2022

Influence is a power that can shape or change something else. So in this study the authors examine about how much power that is or caused by the analysis of Profitability ratios to stock prices. The purpose of this research is to know the profitability ratios of telecommunication companies listed in Indonesia Stock Exchange period 2013-2015, to know the stock price of telecommunication company listed in Indonesia Stock Exchange period 2013-2015, and to know how influence profitability ratio to stock price of telecommunication company . This research is conducted on telecommunication companies listed in Indonesia Stock Exchange period 2013-2015 that is, PT. XL Axiata Tbk, PT. Smartfren Telecom Tbk, PT. Indosat Tbk, PT. Telekomunikasi Indonesia Tbk, PT. Tower Bersama Infrastruktur Tbk, PT. Solusi Tunas Pratama Tbk, PT. Inti Bangun Sejahtera Tbk. The data used are secondary data in the form of financial statements.
Comunicação em Saúde na Prevenção e Detecção Precoce do Câncer: em Busca de Práticas mais Dialógicas e Inclusivas
Authors: Assis Mônica de
Published: December 2022

A comunicação é um componente fundamental das políticas de controle do câncer desde as suas origens. As críticas ao modelo comunicacional dominante, centrado em transmissão de informações, alertam quanto aos seus limites e à necessidade de ações que suscitem reflexão e diálogo. O pequeno exercício de avaliação na dinâmica institucional dificulta reconhecer e superar tais limites. A busca pela melhor forma de comunicar permanece desafiante e exige aprendizado contínuo. O artigo pontua questões que permeiam a produção de materiais e estratégias de comunicação sobre prevenção e detecção precoce do câncer. Propõe-se, ao final, uma síntese de princípios para inspirar as práticas nessa direção.
Sifat Fisika Kimia Dan Efektivitas Krim Ekstrak Etanol 96% Kombinasi Daun Kelor (Moringa Oleifera) Dan Daun Pandan Wangi (Pandanus Ammaryllifolius Roxb.) Terhadap Bakteri Propionibacterium Acnes
Authors: Surya A Ni Kadek Ayu , Wintarian Ni Putu , Farmani Putu Ika
Published: December 2022

Jerawat merupakan salah satu masalah kulit yang umum dialami oleh para remaja sampai dewasa dalam kehidupan sehari-hari. Daun kelor dan daun pandan wangi memiliki sangat banyak kelebihan pada saat dimanfaatkan sebagai obat herba dan sebagai anti bakteri namun pada beberapa penelitian daun pandan wangi harus menggunakan konsentrasi yang tinggi agar berfungsi sebagai anti bakteri maka dari itu dilakukan kombinasi ekstrak. Untuk mengetahui sifat fisika kimia dari sediaan krim ekstrak 96% kombinasi Daun kelor (Moringa oleifera) dan daun pandan wangi (Pandanus ammaryllifolius Roxb). Untuk mengetahui efektivitas antibakteri krim ekstrak 96% kombinasi Daun kelor (Moringa oleifera) dan daun pandan wangi (Pandanus ammaryllifolius Roxb) dengan menggunakan metode cakram. Metode penelitian eksperimental laboratoris dengan pembuatan formulasi sediaan krim, evaluasi dan uji aktivitas antibakteri sediaan krim terhadap bakteri Propionibacterium acnes dengan metode disc diffusion. Evaluasi sifat fisika kimia sediaan krim ekstrak etanol 96% yang dilakukan memiliki aroma khas dan warna hijau kehitaman, daya sebar 4.26 – 6.24 cm, daya lekat 5.32 – 5.47 detik, pH 5.42 – 6.19. Sediaan krim ekstrak etanol 96% kombinasi daun kelor  dan daun pandan dengan konsentrasi 10%, krim dengan konsentrasi 20% , dan krim dengan konsentrasi 40% dapat menghambat pertumbuhan bakteri P acnes dengan daya hambat rata-rata 10.8 mm pada konsentrasi 10%, pada konsentrasi ekstrak 20% 14.8 mm, pada konsentrasi  20.4mm. Kesimpulan dari penelitian ini adalah sediaan krim ekstrak etanol 96% kombinasi daun kelor  (Moringa oleifera) dan daun pandan wangi  (Pandanus ammaryllifolius Roxb dari basis krim, krim dengan konsentrasi 10%, krim dengan konsentrasi 20% , dan krim dengan konsentrasi 40% memiliki sifat fisika kimia dan efektivitas  yang baik sesuai dengan standar uji.
Hubungan Pola Pemberian Asi Dan Pengetahuan Ibu Dengan Status Gizi Bayi 0-6 Bulan Tahun 2022
Authors: Sitohang Apriyani Magdalena , Satriani Satriani , Anshory Jamil
Published: December 2022

Status gizi pada bayi adalah suatu keadaan tubuh yang merupakan akibat dari konsumsi makanan dan penggunaan zat-zat gizi. Rendahnya cakupan persentase ASI di Indonesia dipengaruhi oleh banyak faktor diantaranya adalah kurangnya pengetahuan pada ibu. Tujuan dari penelitian ini adalah untuk mengetahui hubungan pola pemberian ASI  dan pengetahuan ibu dengan Status Gizi bayi 0-6 bulan diwilayah kerja Puskesmas Wonorejo. Metode yang digunakan adalah bersifat kuantitatif dengan metode cross sectional. Jumlah sampel sebanyak 34 responden. Pola pemberian ASI dan Pengetahuan ibu diketahui dengan menggunakan form kuesioner. Status gizi bayi diukur dengan menggunakan baby scale dan timbangan. Analisis data diuji dengan menggunakan uji fisher. Hasil dari penelitian ini dengan menggunakan uji fisher didapatkan hasil bahwa adanya hubungan antara pengetahuan ibu dengan status gizi bayi kategori (BB/U (p=0,009), kategori BB/PB (p=0,31), terdapat hubungan antara pola pemberian ASI dengan status gizi bayi kategori BB/U (p=0,023), kategori PB/U (p=0,023) dan tidak ditemukan hubungan antara pola pemberian ASI dengan status gizi bayi kategori BB/PB (p=0,387). Kesimpulan dari penelitian ini terdapat hubungan antara pengetahuan ibu dengan status gizi (BB/U, BB/PB) dan tidak terdapat hubungan antara pengetahuan ibu dengan TB/U adanya hubungan antara pola pemberian ASI dengan Status gizi kategori BB/U,PB/U. di wilayah kerja Puskesmas Wonorejo dan tidak terdapat hubungan pada pola pemberian ASI dengan status gizi dengan kategori BB/PB.
EFFECT OF PARTICIPATION IN PREGNANT WOMEN'S CLASSES ON PRIMIGRAVIDA ANXIETY LEVELS IN FACING CHILDBIRTH AT PAJARAKAN HEALTH CENTER
Authors: Sumarni Fifil Sumarni , Sulistyaningsih Erma Sulistyaningsih , Ratnawati Leersia Yusi Ratnawati
Published: December 2022

avida in dealing with childbirth at the Pajarakan Health Center. This study uses a pre-experimental research type with a one-group pre-post test design. The study location is in the Pajarakan Health Center, Probolinggo Regency. The population is primigravida mothers in the Pajarakan Health Center area of ​​30 people and the number of samples is 30 people. The sampling technique is non-probability sampling with purposive sampling method. Primary data was obtained by using a questionnaire, secondary data from the Probolinggo District Health Office and Pajarakan Health Center. The independent variable (independent) is the class of pregnant women, the dependent variable (dependent) is anxiety. Data were analyzed using SPSS 26 software for univariate and bivariate. The results of the study describe the characteristics of the majority of respondents aged 20-35 years, the most educational history of undergraduate education, the average family income between 2.5 million - 3.5 million and all respondents attended four class meetings of pregnant women. Respondents' anxiety before taking classes for pregnant women was mostly severe anxiety, the knowledge of respondents before attending classes for pregnant women had a fairly good level of knowledge, the attitude of respondents before taking classes for pregnant women was positive. This indicates that the participation of pregnant women affects the level of anxiety of pregnant women in facing childbirth.

 

Keywords: anxiety, Health Cente,  participation, pregnant women', and primigravid
Wpływ pandemii COVID-19 na regulację działalności młodzieżowych rad w Polsce oraz ocena przyjętych rozwiązań
Authors: Zapolski-Downar Jan
Published: December 2022

Młodzieżowe rady przy jednostkach samorządu terytorialnego działają praktycznie od 1990 r. Dopiero jednak od 2001 r. funkcjonuje podstawa prawna umożliwiająca powołanie takich organów, ale przez 20 lat pozostawała niezmieniona. Pandemia COVID-19 znacząco ograniczyła możliwość funkcjonowania młodzieżowych rad, które zmagały się z wieloma problemami (np. w wielu przypadkach kończyły się kadencje tych organów, a nie powoływano nowych). W rezultacie ustawodawca zajął się ustawową regulacją instytucji młodzieżowej rady i przyjął rządowy projekt ustawy (Dz. U. 2021 poz. 1038). W związku z tym autor starał się zbadać wpływ pandemii COVID-19 na liczbę funkcjonujących młodzieżowych rad. Ponadto przeanalizował najważniejsze rozwiązania zawarte w ustawie. Ostatecznie pozytywnie ocenił działania ustawodawcy, jednakże zwrócił uwagę na jego niezrozumiałe decyzje oraz na zdecydowany spadek liczby młodzieżowych rad między marcem 2020 r. a wrześniem 2021 r. Obecnie widoczna jest tendencja wzrostowa.
Arousal Time from Sedation during Spinal Anaesthesia Given with Propofol and Midazolam for Elective Infraumbilical Surgeries
Authors: Bardhan Purabi , Mannan Mohammad Abdul , Malik Adiba , Banik Sreekanta Chandra
Published: December 2022

Background: Arousal time is variable after sedation with spinal anesthesia after infraumbilical surgeries. Propofol and midazolam have been studied individually using the Observer’s Assessment of Awareness/Sedation (OAA/S) score and different other ways. So this present study was designed to compare the arousal time of sedation for propofol and midazolam using OAA/S scores.

Materials and methods: A total of 60 patients were randomly assigned to receive either propofol (Group A, n =30) or midazolam (Group B, n = 30). All patients of Group A received bolus of propofol (1 mg/kg) followed by infusion at 3 mg/kg/h, Group B received bolus of midazolam (0.05 mg/kg), followed by infusion at 0.06 mg/kg/h. OAA/S score was noted at beginning and again during recovery. The time to achieve OAA/S score 5 was noted. Changes of pulse rate, O2 saturation and satisfaction score were noted.

Results: Among the 60 patients gender distributions where male and female distributed evenly. Age group distributions revealed more patients were gathered in age group 31- 40 years and >51 years. Regarding physical status most of the patients were at ASA physical status 1. It was found that propofol had better outcome than midazolam in terms of arousal time score and patient’s satisfaction score after surgery.

Conclusions: A shorter arousal time from sedation during spinal anaesthesia can be achieved using propofol than arousal time with midazolam.

Chatt Maa Shi Hosp Med Coll J; Vol.21 (2); July 2022; Page 18-21
An Overview of Childhood Ocular, Orbital and Surface Tumor with Clinical Updates
Authors: Roy Soma Rani , Huque Fahmida
Published: December 2022

Childhood tumor is different from but has a wide range varieties in types and presentation due to its origin from different embryogenic layers. Pediatric patients mostly depend on their parent or caregiver for seeking medical attention thus many ocular tumor present with unnecessary delay. Most childhood ocular tumors are benign but there are also life threatening tumors. In this paper a variety of intraocular, orbital and surface tumors are reviewed with their key sign of diagnosis and current treatment modalities. Though most of these tumor present at tertiary eye hospital, the overall knowledge about these tumors can help ophthalmologists in diagnosis and proper referral.

J. Natl. Inst. Ophthalmol. 2022;5(1):51-68
Освіта як засіб досягнення цілей стійкого розвитку та інструмент формування організаційно-підприємницького капіталу в Україні: міждисциплінарний підхід
Authors: Майковська Вікторія
Published: December 2022

Статтю присвячено проблемі формування організаційно-підприємницького капіталу української молоді в умовах орієнтації країни на досягнення цілей сталого розвитку. Розглянуто актуальність досягнення цілей сталого розвитку, розкрито роль освіти в цьому процесі. Відзначено, що економічне зростання є передумовою досягнення високого рівня життя, обґрунтовано сутність поняття «рівень життя», доведено зв’язок проблематики рівня життя й сфери освіти та професійної підготовки. Підкреслено виняткову роль людського капіталу у процесі поліпшення рівня життя населення. Встановлено залежність в умовах економіки знань власників засобів виробництва від носіїв прогресивних знань та професійних навичок, і, як наслідок, збільшення вартості й тривалості освітнього процесу. Наголошується, що розвиток людського капіталу в умовах економіки знань є важливим фактором досягнення цілей сталого розвитку. 

Виявлено, що економіка знань визначає людський капітал як професійні знання, інтелектуальний потенціал, накопичення досвіду, які можуть бути застосованими у економічній діяльності. Зазначається, що виникла потреба в розробці програми формування, використання й відтворення людського капіталу, яка має міждисциплінарний характер і висуває перед освітою конкретні завдання щодо формування людського капіталу. Розглянуто форми і функції людського капіталу. Розкрито сутність організаційно-підприємницького капіталу як похідної форми людського капіталу. Доведено, що підприємці є рушійною силою економіки знань як носій знань і як сила, котра стимулює прагнення до інновацій, всебічно застосовуючи та використовуючи знання. Наголошується, що знання дозволяють власникам організаційно-підприємницького капіталу знаходити нові нетрадиційні можливості розвитку, освоювати нові ресурси, моделювати технології, розробляти засоби праці, ініціювати соціальні процеси, що забезпечує відтворення національного продукту й створення робочих місць.

Проведено аналіз вимог професійних стандартів педагогічних, науково-педагогічних працівників і керівників закладів освіти, виявлено відсутність наступності у даних вимогах залежно від рівня освіти щодо готовності педагогів до формування в здобувачів освіти організаційно-підприємницького капіталу. Зроблено висновок, що розв’язання проблеми формування організаційно-підприємницького капіталу в української молоді інституціональним шляхом наразі є спірним питанням і вимагає пошуку додаткових шляхів його рішення.
Pelatihan Pemanfaatan Media Pembelajaran Prezi untuk Meningkatkan Inovasi dan Kreatifitas Mengajar Guru SD Peduli Anak
Authors: Muzakkir Muzakkir , Purmadi Ary , Fitriani Farida , Astutik Fitri
Published: December 2022

Media Prezi merupakan media presentasi yang didukung adanya internet atau bisa juga aplikasi tersendiri (offline). Target dalam pengabdian ini adalah guru dengan tujuan agar guru bisa menguasai, memanfaatkan, dan mengajarkan siswa di kelas dengan menggunakan media Prezi. Metode yang akan digunakan dalam pelaksanaan program pengabdian ini yakni pelatihan pemanfaatan media pembelajaran secara partisipatif. Adapun teknik pelaksanaan program ini akan dilakukan secara tim yang terdiri dari dosen, dari tim dosen tersebut akan ditugaskan untuk mendampingi guru-guru agar pelaksanaan pelatihan berjalan secara optimal serta adanya buku panduan praktis untuk guru. Pelatihan ini dikhususkan guna memantapkan dan meningkatkan kemampuan guru dalam hal mengembangkan inovasi mengajar di kelas.
PİYASADA BULUNAN BAZI UÇUCU YAĞLARIN FARMAKOPE UYGUNLUĞUNUN DEĞERLENDİRİLMESİ
Authors: ERGENE Burçin , HADDUR Damla , KARAASLAN Melek , İLERİ ÖZLER Hediye Kamuran , SALTAN Hayriye
Published: December 2022

Amaç: Uçucu yağlar; doğal kaynaklardan elde edilen ve vücutta fizyolojik etkilere sebep olan karışımlardır. Bu etkiler, uçucu yağın kimyasal bileşimine bağlı olarak değişkenlik gösterir. Bu nedenle, kullanılacak uçucu yağların dikkatli seçilmesi, beklenen etkinin görülebilmesi adına son derece önemlidir. Piyasada satılan uçucu yağların kaynağına ve kalitesine dair doğru bilgiye ulaşmak ise her zaman mümkün olmamaktadır. Fitoterapi ve aromaterapide terapötik ajan olarak, kimyasal içeriği bilinen ya da farmakope kalitesinde olan uçucu yağlar tercih edilmektedir. Bu uçucu yağlar; ağrı, uykusuzluk, egzema, stres nedenli anksiyete, depresyon ve hazımsızlık gibi ruhsal ve fiziksel rahatsızlıklarda etkin bir şekilde kullanılmaktadır.

Gereç ve Yöntem: Bu çalışma kapsamında; 10 adet lavanta uçucu yağı numunesi, 8 adet biberiye uçucu yağı numunesi, 10 adet limon uçucu yağı numunesi, 8 adet nane uçucu yağı numunesi, 9 adet bergamot uçucu yağı numunesi ve 6 adet fesleğen uçucu yağı numunesi olmak üzere, piyasada satışı olan 16 markanın, toplamda 51 adet uçucu yağının farmakope analizi yapıldı. Lavanta, biberiye, nane ve limon uçucu yağları için Türk Farmakopesi (2017), bergamot uçucu yağı için Fransız Farmakopesi (1991), fesleğen uçucu yağı için ise AFNOR Fransız Standartlarında yer alan monograflar doğrultusunda analiz şartları belirlendi. Fesleğen için elde edilen sonuçlar, Randriamiorisoa, 1995 (Manuel Rapide Et Utile Pour Producteurs D’Huiles Essentielles) içeriğindeki referans değerler ile de karşılaştırıldı.

Sonuç ve Tartışma: Piyasadan temin edilen numunelerle yapılan farmakope analizleri sonucunda elde edilen veriler ışığında; analizi yapılan uçucu yağlar arasında; lavanta uçucu yağı numunelerinden 3 tanesinin ve biberiye uçucu yağı numunelerinden 1 tanesinin farmakopeye tam olarak uygun sonuç verdiği, diğer uçucu yağ numunelerinin ise istenen spesifikasyonları tam olarak sağlamadığı görülmüştür. Numunesi temin edilen yağların farmakope analizi sonuçları, piyasadaki pek çok yağın farmakope kalitesinde olmadığını ortaya koymuştur.
PELATIHAN PELATIHAN PENINGKATAN PEMAHAMAN LINGKUNGAN UNTUK MENCEGAH KANKER PAYUDARA PADA MASYARAKAT
Authors: Riska Septia Wahyuningtyas
Published: December 2022

Kanker Payudara menjadi masalah yang sering menyerang wanita mulai dari umur remaja sampai lanjut usia. Cara pencegahan kanker payudara yang efektif adalah mengetahui gejala awal kanker payudara dengan Gerakan SADARI. Jika pengetahuan kanker payudara ini diberikan sejak dini dan upaya pencegahannya juga dipahami sejak dini, maka remaja terutama siswa SMA akan terhindar dari resiko kanker tersebut. PKM ini dilakukan untuk menambah pengetahuan siswa tentang kanker payudara dan memberikan pemahaman siswa bahwa lingkungan dapat dipakai untuk meningkatkan kesehatan guna melawan jika ada bibit kanker payudara yang ada di tubuh kita. Pemberian pengetahuan kanker ini dengan mengajak salah satu Yayasan kanker SRIKANDI. PKM ini melakukan dua kegiatan utama yaitu kegiatan seminar secara online atau webinar dengan mengundang seluruh sekolah SMA yang ada di Jakarta dan kegiatan kedua yaitu memberikan alat Kesehatan kepada para penyintas kanker melalui Yayasan kanker SRIKANDI.  Hasil dari PKM ini adalah meningkatkan pengetahuan masyarakat bahwa lingkungan merupakan hal utama yang dapat mempengaruhi kondisi psikologis seseorang. Lingkungan yang hijau dapat meningkatkan kondisi psikologis yang bahagia dan sehat. Kesehatan psikologis dapat mempengaruhi aktivitas imunitas tubuh. Semakin baik kondisi psikologis seseorang maka imunitasnya juga semakin baik. Semakin baik imunitas seseorang maka pertahanan seseorang terhadap bibit sel kanker payudara juga semakin baik. Maka perlu sekali peningkatan imunitas tubuh agar dapat terhindar dari penyakit kanker payudara.

Kata Kunci:kenker, payudara, lingkungan, pencegahan
PENGARUH SUPERVISI KEPALA SEKOLAH DAN MOTIVASI KERJA TERHADAP KINERJA GURU DI SDN 1 RANTEPAO
Authors: Tato Eden Gloria Simon , Tambunan Witarsa , Sunaryo T
Published: December 2022

The problems discussed in this study are the Effect of Principal Supervision and Work Motivation on Teacher Performance at SDN 1 Rantepao. This study aims to analyze (1) the effect of principal supervision on teacher performance at SDN 1 Rantepao, (2) the effect of work motivation on teacher performance at SDN 1 Rantepao, (3) the effect of principal supervision and work motivation on teacher performance at SDN 1 Rantepao. The method used in this study is a quantitative method with a survey research approach. The results showed that: (1) there was a positive and significant effect of Principal Supervision on teacher performance, which obtained tcount = 3.050 then significant 0.006 <0.05, while the contribution given was 25.4%, H0 was rejected and H1 was accepted, (2) there was an influence positive and significant work motivation on teacher performance. This can be seen from the results of data analysis where tcount = 7.015 is obtained and the significance is 0.000 <0.05, while the contribution given is 70.6%, H0 is rejected and H1 is accepted, (3) there is an influence of Principal Supervision and work motivation on teacher performance of 86.8% and significant together. This can be seen from the results of data analysis, the results of Fcount > Ftable with Fcount of 8.488 and Ftable of 3.16 then H0 is rejected and H1 is accepted.
ÜNİVERSİTE SINAVINA HAZIRLANAN ÖĞRENCİLERİN BESLENME ALIŞKANLIKLARI, AKDENİZ DİYETİNE UYUM VE SINAV KAYGILARININ DEĞERLENDİRİLMESİ
Authors: UZDİL Zeynep , KOÇ Edanur
Published: December 2022

Bu çalışmada, üniversite sınavına hazırlanan öğrencilerin beslenme durumları, Akdeniz diyetine uyumları ve sınav kaygılarının değerlendirilmesi amaçlanmıştır. Kesitsel tipteki bu çalışmaya 169 kız, 115 erkek toplam 284 gönüllü öğrenci katılmıştır. Genel tanımlayıcı özellikleri, beslenme alışkanlıkları, Akdeniz Diyeti Kalite İndeksi (KİDMED) ve Revize Edilmiş Sınav Kaygısı Ölçeği (RESK) anket formuyla sorgulanmıştır. Annelerin eğitim düzeyi lise olanlarda KİDMED puanları yüksektir (p=0.033). Kahvaltı yapan, ana öğün sayısı fazla olan, süt, ayran, peynir, yoğurt, kırmızı et, yumurta, balık, kurubaklagil, sebze, galeta, kahvaltılık gevrek sık tüketenlerin KİDMED puanı yüksek bulunmuştur (p<0.05). Cinsiyete göre KİDMED puanları benzerdir. Süt, peynir, kırmızı et, balık, simit, çorba, asitli içecek ve bal/pekmezi nadir tüketen öğrencilerde sınav kaygısı yüksek saptanmıştır. KİDMED puanı beden kütle indeksi ve sınav kaygısı ile ilişkili değildir (sırası ile r=-0.026 ve r=-0.034, p>0.05). Diyet kalitesi ve sınav kaygısı besinlerin tüketim sıklığı ile ilişkilidir (p<0.05). Bu çalışmada, diyet kalitesi ile sınav kaygısı ilişkili olmasa da besinlerin tüketimi ile sınav kaygısı arasında ilişki belirlenmiştir. Öğrencilerin sınav başarılarını arttırmada beslenmenin ve diyet kalitesinin önemini ortaya koyacak daha büyük örneklemde ve randomize kontrollü çalışmalara ihtiyaç vardır.
Film kaplı kontrplağın bazı mekanik özellikleri üzerine rutubet içeriğinin etkisi
Authors: HIDIR Aydanur , BAL Bekir Cihad , AVŞAROĞLU Ela
Published: December 2022

Kontrplak bilinen en eski mühendislik ürünü olan ahşap malzemelerden birisidir. Yüzeyi film kaplı kontrplaklar, betonarme yapı inşaatlarında, kalıp hazırlama işlemlerinde başarılı bir şekilde kullanılmaktadır. Bu çalışmada, yüzeyi film kaplı kontrplakların rutubet içerikleri arttığında bazı mekanik özelliklerinde meydana gelen değişimler incelenmiştir. Bu amaç için, yüzeyi film kaplı kontrplaktan 2 grup test örnekleri hazırlanmıştır. Bu gruplardan birincisi hava kurusu rutubet içeriğinde, ikincisi ise yaş halde test edilmiştir. Test örneklerinin hava kurusu yoğunluk, rutubet yüzdesi, eğilme direnci, eğilmede elastikiyet modülü, çivi tutma direnci belirlenmiştir. Elde edilen verilere göre gruplar arasında anlamlı bir farklılık olup olmadığı T testi ile belirlenmiştir. Eğilme direnci ve eğilmede elastikiyet modülü verilerine göre rutubetin mekanik performansı istatistiksel olarak önemli seviyede etkilediği belirlemiştir. Eğilme testleri esnasında elde edilen yük ve deformasyon verileri ile yük-deformasyon grafikleri oluşturulmuştur. Ayrıca, eğilme testi sonunda elde edilen maksimum deformasyon değerleri de belirlenmiştir. Elde edilen verilere göre; film kaplı kontrplağın rutubet içeriği arttıkça eğilme direnci ve elastikiyet modülü azalmakta ancak maksimum deformasyon miktarı artmaktadır.
Utilidad de la mamografía y la ecografía en tejido fibroglandular denso como tamizaje de cáncer de mama
Authors: Díaz Pérez Rodrigo Fabian , Arriciaga Vázquez Johana A.
Published: December 2022

Introducción: La mamografía es el método de elección para el diagnóstico de cáncer de mama, sin embargo en senos con tejidos densos, su rendimiento disminuye. El objetivo del presente estudio fue establecer el valor de la mamografía y la ecografía para el tamizaje de cáncer de mama en mujeres con tejidos glandulares densos.

Metodología: Se realizó un estudio transversal, que incluyó por conveniencia 97 casos consecutivos de mujeres con tejido glandular denso en mamografía, al que se realizó estudio ecográfico complementario, atendidas entre 1-01-2017 al 31-12-2019 en el servicio de Imágenes del hospital Teodoro Maldonado Carbo. Se incluyeron aquellas que poseían estudio de lesión de mama por biopsia y/o de anatomía patológica. Para el análisis de método se calcularon sensibilidad, especificidad, valores predictivos positivos y negativos, cocientes de probabilidad positivos y negativos y porcentaje de exámenes correctamente realizado.

Resultados: La prevalencia de Cáncer de mama en la muestra fue 95%. Para el BIRADS mamográfico el rendimiento diagnóstico fue: DC 12.37%, S 7.61%, E 98.13%, VPP 98.68% VPN 5.56%, CPP nv, CPN 0.92. Para el BIRADS ecográfico fue de DC 43.30%, S 41.30%, E 80%, VPP 97.44, VPN 6.90%, CPP 2.07, CPN 0.73. Para el criterio del ecografista fue de DC 86.60%, S 91.30%, E 8.00%, VPP 94.38, VPN 5.56%, CPP 0.91, CPN nv.

Conclusión: La mamografía tuvo un bajo desempeño. En ecografía la utilización de BIRADS mejora el rendimiento. El criterio emitido por un ecografista experimentado logra el mayor desempeño para el diagnóstico de neoplasia maligna de mama en mujeres con tejido fibroglandular denso.
Investigating Bayesian optimization for expensive-to-evaluate black box functions: Application in fluid dynamics
Authors: Diessner Mike , O'Connor Joseph , Wynn Andrew , Laizet Sylvain , Guan Yu , Wilson Kevin , Whalley Richard D.
Published: December 2022

Bayesian optimization (BO) provides an effective method to optimize expensive-to-evaluate black box functions. It has been widely applied to problems in many fields, including notably in computer science, e.g., in machine learning to optimize hyperparameters of neural networks, and in engineering, e.g., in fluid dynamics to optimize control strategies that maximize drag reduction. This paper empirically studies and compares the performance and the robustness of common BO algorithms on a range of synthetic test functions to provide general guidance on the design of BO algorithms for specific problems. It investigates the choice of acquisition function, the effect of different numbers of training samples, the exact and Monte Carlo (MC) based calculation of acquisition functions, and both single-point and multi-point optimization. The test functions considered cover a wide selection of challenges and therefore serve as an ideal test bed to understand the performance of BO to specific challenges, and in general. To illustrate how these findings can be used to inform a Bayesian optimization setup tailored to a specific problem, two simulations in the area of computational fluid dynamics (CFD) are optimized, giving evidence that suitable solutions can be found in a small number of evaluations of the objective function for complex, real problems. The results of our investigation can similarly be applied to other areas, such as machine learning and physical experiments, where objective functions are expensive to evaluate and their mathematical expressions are unknown.
Smartphone-based particle image velocimetry for cardiovascular flows applications: A focus on coronary arteries
Authors: Caridi Giuseppe C. A. , Torta Elena , Mazzi Valentina , Chiastra Claudio , Audenino Alberto L. , Morbiducci Umberto , Gallo Diego
Published: December 2022

An experimental set-up is presented for the in vitro characterization of the fluid dynamics in personalized phantoms of healthy and stenosed coronary arteries. The proposed set-up was fine-tuned with the aim of obtaining a compact, flexible, low-cost test-bench for biomedical applications. Technically, velocity vector fields were measured adopting a so-called smart-PIV approach, consisting of a smartphone camera and a low-power continuous laser (30 mW). Experiments were conducted in realistic healthy and stenosed 3D-printed phantoms of left anterior descending coronary artery reconstructed from angiographic images. Time resolved image acquisition was made possible by the combination of the image acquisition frame rate of last generation commercial smartphones and the flow regimes characterizing coronary hemodynamics (velocities in the order of 10 cm/s). Different flow regimes (Reynolds numbers ranging from 20 to 200) were analyzed. The smart-PIV approach was able to provide both qualitative flow visualizations and quantitative results. A comparison between smart-PIV and conventional PIV (i.e., the gold-standard experimental technique for bioflows characterization) measurements showed a good agreement in the measured velocity vector fields for both the healthy and the stenosed coronary phantoms. Displacement errors and uncertainties, estimated by applying the particle disparity method, confirmed the soundness of the proposed smart-PIV approach, as their values fell within the same range for both smart and conventional PIV measured data (≈5% for the normalized estimated displacement error and below 1.2 pixels for displacement uncertainty). In conclusion, smart-PIV represents an easy-to-implement, low-cost methodology for obtaining an adequately robust experimental characterization of cardiovascular flows. The proposed approach, to be intended as a proof of concept, candidates to become an easy-to-handle test bench suitable for use also outside of research labs, e.g., for educational or industrial purposes, or as first-line investigation to direct and guide subsequent conventional PIV measurements.