bluuebunny/crossref_metadata_2025 huggingface dataset:
Eine fragmentierte Rüstungsindustrie – Europas strategischer Nachteil
Authors: Alvarez-Couceiro Paula
Published: March 2024

Die erneute Fokussierung auf Europas Verteidigung infolge des Ukraine-Kriegs eröffnet der Europäischen Union die Möglichkeit, ihren fragmentierten Verteidigungsindustriesektor umzustrukturieren, um so die Sicherheit all ihrer Mitglieder zu stärken. Die EU muss das empfindliche Gleichgewicht zwischen nationalen Interessen und dem Wohl der Union schützen. Diese sensible Balance hat häufig Spannungen verursacht. Seit Gründung der EU haben die Mitgliedstaaten ihre nationalen Sicherheitsangelegenheiten hintangestellt. Das hat nationale Verteidigungsindustrien hervorgebracht, die hauptsächlich Material für den inländischen Bedarf oder für Exporte in Nicht-EU-Länder produzieren, und zur Entwicklung verschiedener Waffensysteme geführt. Diese Fragmentierung hat die Effizienz und die Skaleneffekte der europäischen Verteidigungsindustrie verringert. Während die EU sich durch Initiativen wie Permanent Structured Cooperation um Zusammenarbeit bemüht, müssen nun die verschiedenen nationalen Sektoren stärker kooperieren, um die Herausforderungen des derzeitigen strategischen Umfelds bewältigen zu können. Die groß angelegte russische Invasion in der Ukraine hat erhebliche Schwachstellen im derzeitigen europäischen Verteidigungsindustriesystem aufgezeigt. Dazu gehören die Erschöpfung der Lagerbestände, die Vielzahl von Plattformen, die übermäßige Abhängigkeit von Importen bei kritischen Rohstoffen und Halbleitern sowie die zögerlichen Erhöhungen des Verteidigungshaushalts. Die EU muss sich auf eine gemeinsame Vision bei Bedrohungen und langfristigen Zielen einer geschlossenen Verteidigungspolitik einigen. Erst dann kann sie einen kollektiven Planungs- und Beschaffungsprozesses erarbeiten und so die Vielzahl doppelter und redundanter Systeme reduzieren.
Synthesis and characterization of (Pb1−x
Sr
x
)MnBO4: a structural and spectroscopic study
Authors: Uribe-Rincón Carla M. , Murshed Mohammad Mangir , Gesing Thorsten M.
Published: March 2024

The presence of ns
2 stereo-chemical active lone electron pairs (LEPs) causes asymmetric atomic environments around a given p-block cation, leading to change the crystal chemistry of a respective system. Here we report a series of mullite-type compounds to understand at what extend Sr2+ replaces the stereochemical active Pb2+ cation in (Pb1−x
Sr
x
)MnBO4. Each member of the solid solution has been synthesized by conventional solid-state method. The polycrystalline samples are characterized using X-ray powder diffraction followed by Rietveld refinement. Substitution of Pb2+ with Sr2+ leads to contraction of the a lattice parameter with slight elongation in the b and c direction. For a difference of 1 pm of the ionic radius between Sr2+ and Pb2+, the cell volume contracts about 4 % between the end members as the spatial requirement of the LEP activity in the MBO4
2− channels significantly decreases. Within the solid solution, two distinct Pb/Sr–O2 bond distances significantly differ, which gradually decreases with increasing strontium content leading to a more symmetric coordination around strontium. The calculated BVS of Pb2+/Sr2+ exhibits a linear correlation with the Wang–Liebau eccentricity parameter, indicating to an increased bonding ability cation. The vibrational properties are characterized by both Raman and FTIR spectroscopy, complementing the XPRD results. Electronic band gaps of selected (Pb1−x
Sr
x
)MnBO4 samples were obtained from diffuse reflectance spectroscopy data. Additionally, the Sr containing samples show higher thermal stability than the Pb containing counterparts.
Management Activities to Motivate and Establish Employee Loyalty
Authors: Balahurovska Inna
Published: March 2024

The work examines modern strategies and management approaches aimed at increasing the level of motivation and establishing
the loyalty of personnel in organisations. An analysis of the integrated management activity model, which is specially adapted to
achieve maximum efficiency in the context of employee motivation and loyalty, was carried out. The main focus of the research is
on the role of leadership in creating a favourable working environment and forming a positive working atmosphere. The author also
considered modern management technologies that simplify motivation processes and ensure transparency in the interaction between
management and staff. The literature review and the analysis of the integrated model help to reveal the key aspects and principles that
underlie the successful management of employee motivation and loyalty in modern organisations. The article’s conclusions serve as
a basis for further research and development of personnel management strategies.
Darbo rinkos raidos tendencijų vertinimas Lietuvoje: jaunimo padėties lyginamoji analizė
Authors: Okunevičiūtė Neverauskienė Laima , Arūnas Pocius Arūnas Pocius
Published: March 2024

Atsižvelgiant į darbo rinkos raidos netolygumus, siekiama įvertinti bendrųjų nedarbo rodiklių raidos tendencijas Lietuvoje. Esminis
šiame darbe išskirtų gyventojų grupių situacijos darbo rinkoje diferenciacijos požymis – amžius. Tačiau prioritetas čia teikiamas
jaunimui. Kitas ryškus tyrimo prioritetas – nedarbas, nors plačiau analizuoti ir aktyvumo bei užimtumo rodikliai. Siekiant užtikrinti
tyrime atliktos stebėsenos sistemiškumą, atlikta Valstybės duomenų agentūros (Lietuvos statistikos departamento) ir Užimtumo
tarnybos nedarbo rodiklių lyginamoji analizė. Vertinant nedarbo (bedarbių skaičiaus) pokyčius, išskirtos paskiros jiems poveikį
darančios veiksnių grupės. Vertinimo sistemiškumas užtikrinamas ir lyginant priešingas raidos kryptis išreiškiančių darbo rinkos
rodiklių santykinius dydžius (užimtumo ir nedarbo), suteikiant jiems tiesioginę lyginamąją raišką. Maksimalus tyrime naudojamas
laiko intervalas apima 1998–2021 m. laikotarpio statistinius ir administracinius duomenis. Kita vertus, siekiant ypač akcentuoti ankstesnės
pandemijos poveikį, stebimų pasikeitimų tendencijų specifiką ir atsižvelgiant į duomenų disponavimo galimybes, straipsnyje
išryškinami ir trumpalaikiai pokyčiai (iki 2022 m.), kurie apima 2–6 metų laikotarpį.
A Relationship Analysis Between the Poverty Rate and the Regional Development Level in Kulon Progo Regency, Indonesia
Authors: Rindika Lisa , Hasanati Surani , Rijanta R. , Giyarsih Sri
Published: March 2024

This study aims to identify the level of poverty and the level of regional development, along with an analysis of the relationship and
typology between the two, in Kulon Progo Regency. The analysis unit in this research was 12 subdistricts in Kulon Progo Regency.
The method used in the research is descriptive quantitative, with secondary data analysis using factor analysis, natural breaks,
Pearson Product Moment correlation test, alignment levels, regional typologies with scatter plot, and spatial analysis. Meanwhile,
regional development policy recommendations are also prepared, based on the type of area resulting from the typology using a
SWOT analysis. The results showed that there are variations in poverty and regional development levels. The correlation test
between the poverty rate and three factors in the regional development rate showed a fairly strong negative relationship with input
and output factors and a strong negative relationship with process factors, which means that the higher the poverty level, the lower
the level of regional development, and vice versa. Meanwhile, regional development policy recommendations are prepared based
on four quadrants of the resulting regions, namely Quadran I (developed regions), Quadran II (developing regions), and Quadran III
and IV (underdeveloped regions).
Faktor yang Berhubungan dengan Keluhan Muskuloskeletal pada Tenaga Kerja Bongkar Muat (TKBM) Divisi Unit Pengantongan Pupuk di Pelabuhan Tanjung Emas Semarang
Authors: Fathurrohim Muhammad , Wahyuningsih Anik Setyo
Published: March 2024

Latar Belakang: Musculoskeletal disorders merupakan sekumpulan gangguan atau gejala yang berkaitan dengan jaringan otot, tendon, ligamen, kartilago, sistem saraf, pembuluh darah, dan struktur tulang. Pada pekerja tenaga kerja bongkar muat memiliki risiko terjadinya keluhan muskuloskeletal. Tujuan penelitian ini adalah untuk mengetahui faktor yang berhubungan dengan keluhan muskuloskeletal pada pekerja tenaga kerja bongkar muat. Metode: Jenis penelitian ini adalah deskriptif kuantitatif dengan pendekatan cross sectional menggunakan metode purposive sampling pada 59 pekerja. Instrumen yang digunakan yaitu kuesioner, lembar observasi, dan alat ukur. Analisis data menggunakan uji chi-square. Hasil: Terdapat hubungan antara masa kerja (p=0,000) dan sikap kerja (p=0,000) dengan keluhan muskuloskeletal, sedangkan IMT (p=0,217), lama kerja (p=0,544), frekuensi angkat (p=0,472), dan beban kerja (p=0,985) tidak berhubungan dengan keluhan muskuloskeletal.
Hubungan Pengetahuan, Sosial Ekonomi dan Ketersediaan Jamban Keluarga dengan Kebiasaan BABS di Sungai Batang Sikabau
Authors: Friska Anastasya Meliza , Wijayanti Yuni
Published: March 2024

Indonesia merupakan salah satu negara yang masih ditemukan masyarakat dengan perilaku BABS, dengan jumlah kasus 7.462.063 KK (18,93%), di Nagari/kelurahan Ujung Gading kasus BABS sebanyak 1.349 KK (14,59%) serta di Jorong/Desa Pasar Lama sebanyak 1.113 KK (20,03%) masih melakukan praktik BABS di sepanjang aliran sungai Batang Sikabau. Metode penelitian yang digunakan adalah penelitian observasional analitik dengan rancangan cross sectional dan dilakukan pada bulan Februari-Maret 2023 di Jorong Pasar Lama yang dilewati oleh aliran sungai Batang Sikabau. Total sampel pada penelitian ini sebanyak 90 responden. Hasil penelitian didapatkan bahwa tingkat pendidikan dengan p value 0,023, tingkat pendapatan dengan p value 0,002 dan ketersediaan jamban keluarga dengan p value 0,000 berhubungan dengan kebiasaan BABS di sepanjang aliran Sungai Batang Sikabau. Sedangkan tingkat pengetahuan dengan p value 0,835 tidak ada hubungan dengan kebiasaan BABS di sepanjang alirang Sungai Batang Sikabau. Simpulan dari penelitian ini adalah ada hubungan antara tingkat pendidikan, tingkat pendapatan dan ketersediaan jamban keluarga, namun tidak ada hubungan antara tingkat pengetahuan dengan kebiasaan BABS di sepanjang aliran Sungai Batang Sikabau tahun 2023.
Personal Hygiene dan Sanitasi Pabrik Serta Keberadaan Bakteri Coliform pada Air Rendaman Tahu
Authors: Wulandari Retno , Pawenang Eram Tunggul
Published: March 2024

Abstrak

Hasil laporan studi pendahuluan yang dilakukan pada salah satu pabrik tahu di Kelurahan Sumurrejo berdasarkan pemeriksaan mikrobiologi yang dilakukan di UPTD Labkesda Kabupaten Semarang menunjukkan bahwa air rendaman tahu mengandung bakteri coliform yang melebihi batas ambang yaitu sebesar >1600 per 100 ml. Semakin tinggi tingkat bakteri coliform, maka semakin tinggi pula keberadaan patogen lain yang biasa hidup dalam kotoran manusia dan hewan. Tujuan dari penelitian ini untuk memperoleh gambaran terkait personal hygiene dan sanitasi pabrik tahu serta keberadaan bakteri coliform pada air rendaman tahu di pabrik tahu Kelurahan Sumurrrejo Gunungpati Kota Semarang. Jenis penelitian yang digunakan adalah kuantitatif dengan pendekatan cross sectional. Penelitian ini dilakukan di pabrik tahu Kelurahan Sumurrejo yang dilaksanakan pada bulan Desember 2022 s.d Januari. Jumlah sampel sejumlah 8 sampel diambil dengan teknik total sampling. Data dianalisis secara univariat. Hasil penelitian menunjukkan bahwa personal hygiene pengrajin tahu 100% dalam kategori baik, sanitasi bangunan 62,5% kategori buruk, 37,5% memiliki fasilitas sanitasi buruk, 87,5% memiliki sanitasi peralatan buruk. Hasil pemeriksaan mikrobiologi bakteri coliform pada air rendaman tahu menunjukkan 100% melebihi batas ambang. 

Abstrac

The results of a preliminary study report conducted at one of the tofu factories in Sumurrejo Village based on microbiological examination conducted at the UPTD Labkesda Semarang Regency showed that tofu soaking water contained coliform bacteria that exceeded the threshold, which was > 1600 per 100 ml. The higher the level of coliform bacteria, the higher the presence of other pathogens that normally live in human and animal feces. The purpose of this study was to obtain an overview regarding personal hygiene and sanitation of tofu factories and the presence of coliform bacteria in tofu soaking water at the tofu factory, Sumurrejo Village, Gunungpati, Semarang City. The type of research used is quantitative with a cross sectional approach. This research was conducted at the Sumurrejo Village tofu factory which was carried out from December 2022 to January. Total sample of 8 samples taken by total sampling technique. Data were analyzed univariately. The results showed that the personal hygiene of tofu craftsmen was 100% in the good category, building sanitation was 62.5% in the bad category, 37.5% had bad sanitation facilities, 87.5% had bad sanitation equipment. The results of microbiological examination of coliform bacteria in tofu soaking water showed 100% exceeding the threshold.
Potensi Penularan Tuberkulosis Paru di RW X, Desa X, Kecamatan Bojonggede, Kabupaten Bogor
Authors: Maharani Annisa , Siwiendrayanti Arum
Published: March 2024

Case Notification Rate pada tahun 2019 di Kabupaten Bogor sebesar 274 per 100.000 penduduk. Success Rate pada tahun 2019 sebesar 89,29%, angka tersebut hampir mendekati target yaitu sebesar 90%. Kondisi lingkungan fisik rumah salah satu faktor yang dapat menyebabkan terjadinya penularan tuberkulosis paru. Tujuan dari penelitian ini adalah untuk menganalisis potensi penularan tuberculosis paru di RW 10 Desa Kedung Waringin, Kecamatan Bojonggede, Kabupaten Bogor. Penelitian ini dilaksanakan pada bulan Oktober s.d. Desember 2022 menggunakan metode penelitian analitik deskriptif kuantitatif. Teknik sampling yang digunakan adalah Probability sampling dengan cara cluster sampling. Jumlah sampelnya adalah 97 rumah. Analisa data pada penelitian ini menggunakan teknik analisis univariate dan analisis potensi. Hasil penelitian ini menunjukkan variabel yang paling berpengaruh dalam penularan tuberkulosis paru di RW 10 Desa Kedung Waringin adalah luas ventilasi, kelembaban, serta pencahayaan. Berdasarkan perhitungan didapatkan hasil rata-rata (mean) untuk variabel penelitian adalah 2,16. Dimana angka tersebut menunjukkan bahwa tingkat potensi penularan tuberculosis paru di RW 10 Desa Kedung Waringin termasuk dalam kategori rendah.
Glucose conversion process to methyl lactate catalyzed by SnCl4-based homogeneous catalysis
Authors: Zhuang Xiao-Wei , Feng Yong-Shun , Qiao Hui , Yu Hai-Xia , Yang Wei-Ming , Pan Xin
Published: March 2024

Biomass is a renewable alternative to fossil fuels and a valuable source of chemicals. In this study, a facile and efficient method was established to improve the selectivity of methyl lactate (MLA) for the homogeneous Lewis acid catalyzed chemical conversion of glucose and methanol. The effects of catalyst dosage, reaction temperature, and reaction time were systematically investigated, with an emphasis on the variation trends of MLA and other by-products. Through process optimization, the best catalyst molar ratio was 0.075 to 0.1, the reaction temperature was 170 to 180 °C, and the reaction time was 3 h. Under these conditions, the conversion of glucose in methanol exceeded 98%, and the yield of MLA was greater than 40%.
The Role of the Fibre in the Structural Hierarchy of Paper
Authors:   Pulp & Paper Centre and the Department of Chemical Engineering and Applied Chemistry, University of Toronto, Kortschot M.T.
Published: March 2024

In this review paper, the concept of structural hierarchy is applied to paper in an effort to establish the role of the fibre in the structure of paper. The structure of paper is partitioned according to the size or scale of the features of interest, and the basic nature of a generic paper physics research project is shown to be independent of the scale being considered. The literature dealing with paper structure and properties at each significant scale is briefly introduced, and the similarity of studies at quite different ends of the spectrum is highlighted. The prospects for an integrated model relating a mechanical property such as modulus to structural variables alone are discussed. Throughout the emphasis is on mechanical properties, and the central role of the fibre within the structural hierarchy.
Fiber Properties and Paper Fracture – Fiber Length and Fiber Strength
Authors:   Dept. of Forest Resource Management, Box 24, FIN-00014 University of Helsinki, Kärenlampi Petri , Yu Yongzhong ,   Dept. of Forest Resource Management, Box 24, FIN-00014 University of Helsinki
Published: March 2024

Phenomenological theories on the effect of pulp fiber properties on the fracture energy of paper are discussed. The effect of fiber length and strength is clarified experimentally. Fiber length appears to affect fiber failure probability only slightly. When fiber strength is changed, the fracture energy decreases greatly with only a small increment in fiber failure probability. This suggests that the fracture energy contribution of a fiber may be correlated between fibers. The effect of fiber length and strength on the cohesive stress – crack widening relationship is clarified.
A study on referral pattern for fetal echocardiography and identifying the various risk factors for congenital heart defects
Authors: Zehra Saima
Published: March 2024

Background: Fetal Echocardiography is becoming an important tool for the detection of CHD but results can be unpredictable, depending on various factors like expertise, position of the baby and referral indications. Various factors are associated with detection of CHD which need further evaluation. The present study was undertaken to study the referral pattern for Fetal Echocardiography (FE) at a tertiary Pediatric Cardiac Centre and further to identify the various risk factors associated with Congenital heart defect. Results: The study was conducted on 200 consecutive pregnant women who were referred for fetal echocardiography at Pediatric Cardiac Unit of the hospital. The mean maternal age and the mean gestational age were 26.85 ± 4.6 years and 30.36 ± 5.14 weeks at the time of fetal screening. On evaluating the various referral indications, gestational diabetes mellitus was found in 55% of the study subjects, but CHD was detected in 3.6% of their fetuses. Hypothyroidism was the second commonest indication (16.5%) among the referrals and 3% of their foetuses were found to have CHD. The indication that accounted for the maximum number of CHD (50%) was cardiac anomaly detected on ultrasonography, followed by single umbilical artery, in which 33.3% of CHD was detected. CHD was however significantly associated only with the referral indications of cardiac anomaly on USG (p value < 0.001) and single umbilical artery (p value = 0.033). The association of the other referral indications of the subjects was not found to be significant. Conclusion: Majority of women referred late for the fetal echocardiography screening. Extracardiac anomaly during second trimester scan warrants immediate fetal cardiac evaluation
Reverse total shoulder arthroplasty with a humeral inclination of 135º for treatment of 3- and 4-part proximal humeral fractures: Clinical analysis with minimum follow-up of 2 years
Authors: Brito Francisco de , Pires Luís , Rego Paulo , Alonso Raul
Published: March 2024

Background: The reverse shoulder arthroplasty (RSA) is indicated for the treatment of proximal humerus fractures (PUF). To present day, there are limited data regarding the difference in functional outcomes of the RSA with a humeral inclination of 135º or 155º, in fracture context. The purpose of this study is to retrospectively analyze the functional outcomes of complex PUF treated with RSA with a humeral inclination of 135º. Materials and Methods: We carried out a retrospective study in which we analyzed 22 patients with PUF, who underwent RSA with a humeral inclination of 135º, between January 2017 and June 2019. Functional outcomes were measured through the Q-DASH and ASES scores. The Constant-Murley score (CS), active elevation (AA), abduction (ABD), internal rotation (IR), external rotation (ER), and abduction strength were obtained in both arms, using the contralateral shoulder as an estimative of preinjury function. Results: The patients were followed for a mean of 39.5 months. Seven patients were pain-free while performing their daily activities. Thirteen referred minor pain in their usual activities and 2 reported moderate to very severe pain. The mean ASES and Quick-DASH scores were 80% and 18.1 points, respectively. The CS was 59 points, 13 points less than the nonoperated side. The average AA was 128º, ABD 123º, ER 27º, and IR 36º. We found no correlation between the age and ASES score or Q-DASH score and between ER and ASES or Q-DASH score, but we found a positive correlation between ASES score or Q-DASH score and AA, ABD and IR. Conclusion: RSA is a valid and reliable option in selected elderly patients with complex PUF. The choice of the RSA humeral inclination (135º Vs 155º) does not currently have defined criteria, and there are no studies with sufficient statistical power to validate one of these options.
Social support experiences of cervical cancer patients at tikur anbessa specialized hospital, addis ababa, ethiopia: a qualitative study
Authors: Dirar Anteneh , Mekonnen Wubegzier , Berhanu Zena
Published: March 2024

Background: Cervical cancer diagnosis creates a stressful situation that influences women’s life. Social support during a stressful experience may contribute to improved physical and mental well-being. Therefore, the objective of this study was to assess the social support experiences and needs of cervical cancer patients at Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia. Methods: A qualitative study was conducted among eleven purposively selected cervical cancer patients on follow-up treatment. In-depth interviews were used to collect data. Data were analyzed via thematic analysis. Results: The study found that most of the women have experienced good social support. Women perceive that the most important source of social support was from family members that was captured in the themes ‘family support was significant’ and ‘caring husband’. On the other hand, few of them experienced that both their relatives and their close friends tended to avoid them despite their need for care. The results of the qualitative analysis also revealed a theme ‘the support I need’ in which participants considered information and advice from health care professionals as the most vital support they need. Conclusion: It was concluded that health care professionals together with social workers have to assign adequate time and have a relational tool that enables them to help patients have a successful and trusted health care follow-up.
Функція Лагранжа для шаруватого надпровідника скінченних розмірів
Authors: Бухтатий А.Є. , Майзеліс З.О. , Ямпольський В.О.
Published: March 2024

Теоретично досліджено поширення джозефсонівських плазмових хвиль в обмежених зразках шаруватого надпровідника за допомогою підходу Лагранжа. З базових експериментальних результатів отримано вирази для функції Лагранжа для зв’язаних ступенів вільності фази параметра порядку в надпровідних шарах і електромагнітного поля. Показано, що у k-просторі функція Лагранжа представляє собою суму зліченої множини незалежних внесків, які відповідають різним можливим хвилеводним модам у зразку, які розбито на звичайні та надзвичайні моди. Отримано дисперсійні залежності мод. Результати можуть бути застосовані для побудови електронних пристроїв терагерцевого діапазону.
Derechos humanos y autofagocitosis de la humanidad. A propósito de la concepción universalizadora de Arthur Kaufmann y la dimensión responsabilizante de Hans Jonas
Authors: Anzalone Angelo
Published: March 2024

El momento histórico que vivimos se caracteriza, entre otras cuestiones, por una sorprendente aceleración de dinámicas autodestructoras de la convivencia pacífica. La humanidad está llamada a enfrentarse a grandes desafíos que, probable e ingenuamente, se consideraban superados. En este contexto, vuelve a ser urgente una reflexión sobre la esencial tarea de la herramienta jurídica y, en términos más generales, sobre el fundamento y la exigencia del derecho. Desde las concepciones de dos ilustres pensadores –Arthur Kaufmann y Hans Jonas– propondremos un itinerario filosófico práctico y concreto que aspira a restaurar la debida importancia que tienen algunas características de los derechos humanos para una humanidad en crisis.
Determining the psycho-emotional state of the observed based on the analysis of video observations
Authors: Amirgaliyev Yedilkhan , Krak Iurii , Bukenova Indira , Kazangapova Bayan , Bukenov Gani
Published: March 2024

This paper develops a system for determining the psycho-emotional state of the observed people based on the analysis of video surveillance with the application of artificial intelligence technology using hardware and software tools such as PoseNet, PyTorch, SQLite, FastAPI and Flask. In many areas of human endeavor, there is an urgent need for a surveillance system that can reliably function and detect suspicious activities. To solve this problem, this paper proposes a novel framework for a real-time surveillance system that automatically detects abnormal human activities.
The system has been tested and validated in real environments. The results of testing artificial intelligence program models showed the best results (f1 score with values of 0.98–0.99). The weighted average value of the f1-score metric was 0.96, which is quite a high value. The use of PoseNet implemented with PyTorch allowed to accurately determine the pose of the person in the video and extract information about the position of different body parts. The peculiarity of this work lies in the development of artificial intelligence models for automatic detection of possible physical aggression in videos, in the methods of forming an optimal set of features for the development of AI models that identify the aggressor and the victim of bullying.
The developed system has the potential to be a useful tool in various fields such as psychology, medicine, security and others where it is important to analyze the emotional state of people based on their physical manifestations. The obtained applied results can be used in educational institutions and in spheres where video analysis is necessary
Determining the rational structure of multilayer technical fabric for woven power clamps
Authors: Shcherban Volodymyr , Melnyk Gennadij , Kolysko Marijna , Kirichenko Anton , Shcherban Yury , Lukianenko Serhii , Ostashevskyi Ihor , Vdovin Pavlo
Published: March 2024

The object of research is multi-layered technical fabrics for woven power clamps. A task to determine the rational structure of a multi-layer technical fabric for power clamps has been solved, which makes it possible to achieve an effect when introduced into production through the minimization of raw material costs and the reduction of energy costs for manufacturing a unit of products. The value of the beating force, the tension of warp threads of the outer protective layers, the force layers, the warp threads for connecting the outer protective layers, and the force layers for two structures of multilayer technical fabric were studied. A comparative analysis of conditions for the formation of two multilayer fabrics from polyamide threads was carried out and a multilayer fabric with the most rational structure was selected, the formation of which would require less technological effort. Experimental studies have made it possible to build regression dependences on determining the influence of the initial tension of warp threads of the outer protective layers on the beating force value. The joint effect of the size of an overstep and the different tension of a shed on the beating force value was established, depending on the structure of a multilayer technical fabric. It is shown that when the tension of warp threads of the outer protective layers increases, the beating force value increases. A value of the tension of warp threads in outer protective layers, force layers, warp threads for connecting the outer protective layers and force layers in the position of an overstep and at the moment of thread beating was determined. Analysis of regression dependences will make it possible to determine the optimal loading parameters of the loom. It has been proven that the beating force value is affected by the structure of a multi-layer technical fabric and the tension of warp threads in outer protective layers. The improved multi-layer technical fabric is used for laying pipes with an external factory-made polyethylene coating
Ensuring uniformity of strength of fine-grained concrete based on modified composite cement
Authors: Shіshkina Aleхandra , Domnichev Andriy
Published: March 2024

Insufficient determination of the effect of surface-active substances introduced in extremely low concentrations on the formation of the stability of the properties of fine-grained concrete based on composite Portland cements determined the feasibility of conducting research in this area. The studies investigated the influence of the modification of composite cement with water activated by the use of the hydrophilic hydration mechanism. It has been proven that these factors include the type and amount of applied water nano modifiers. The analysis of the study results confirmed that the introduction of water activated by the mechanism of hydrophilic hydration into concrete in extremely small doses significantly increases the rate of formation of concrete strength and reduces the coefficient of its variation. Owing to this, the strength of the resulting modified fine-grained concrete based on composite cement at the age of 3 days exceeds the strength of the similar concrete without additives by 300 %, and at the age of 27 days – by 25 %. At the same time, the coefficient of variation of strength has a minimum value at the optimal amount of nano additive – water modifier. This allows us to assert the effectiveness of the revealed mechanism of modification of composite cement. Thus, there are reasons to assert the possibility of targeted regulation of the processes of formation of a strong homogeneous structure of fine-grained concrete based on composite cement by using water activated by the mechanism of hydrophilic hydration
Development of a fuzzy logic model for predicting the quality of micro friction stir spot welding (µFSSW) using particle swarm optimization
Authors: Arsyad Hairul , Membala Semuel Boron , Widyianto Agus , Syahid Muhammad , Arma Lukmanul Hakim , Rudi Rudi , Mangngenre Saiful
Published: March 2024

Micro Friction Stir Spot Welding (µFSSW) is crucial in microelectronics and precision manufacturing. It requires a comprehensive understanding of the complex connections between various parameters to achieve the highest quality welds. This study aims to improve the prediction of µFSSW weld quality by incorporating advanced optimization techniques. Fuzzy Logic Optimization is used to model uncertainties, and Particle Swarm Optimization (PSO) is employed to fine-tune parameters for improved accuracy. The fuzzy logic system utilizes Gaussian functions as membership functions, organized with nine rule bases. The results clearly demonstrate that the fuzzy logic model greatly enhances accuracy when combined with Particle Swarm Optimization. The refined model improves precision for pin diameter, shoulder diameter, Thermo-Mechanically Affected Zone (TMAZ) area, and cross-tensile strength. The PSO-optimized model shows lower accuracy in predicting plunge depth and shear tensile strength. The ongoing decline in Root Mean Square Error (RMSE) values highlights the complexity of the results. The optimization significantly improves the model’s ability to predict specific weld quality metrics, as demonstrated by the pin diameter’s reduced RMSE value of 0.07. The collective results showcase an optimized Fuzzy Logic System (FLS) model adept at accurately predicting µFSSW weld quality, demonstrating adaptability across diverse conditions. The discernible increase in accuracy, reaching up to 76 % following the optimization of the fuzzy logic model with PSO, serves as a testament to the efficacy of the employed methodologies in advancing the precision and reliability of µFSSW weld quality predictions
A comparative analysis of gas-cooled fast reactor using heterogeneous core configurations with three and five fuel variations
Authors: Prasetya Fajri , Syarifah Ratna Dewi , Karomah Iklimatul , Aji Indarta Kuncoro , Trianti Nuri
Published: March 2024

GFR or Gas-cooled Fast Reactor is one type of fast generation-IV that uses a very high cooling temperature. Thus, it is necessary to have the right reactor core design so that the power distribution of neutrons produced reaches a safe and even limit point. The use of a uniform (homogeneous) reactor core can produce peaking power. This is very avoidable because it will cause a reactor accident. In this study, researchers tried to compare the results of the analysis for two heterogeneous reactor core designs including the configuration of 3 fuel variations and 5 fuel variations using UN-PuN fuel. This study aims to determine the keff value produced by both types of fuel variations during 5 years of burn-up and determine the characteristics of neutron flux, fission rate, and fission product during 15 years of burn-up. This study was started by calculating the homogeneous and heterogeneous core of 3 and 5 fuel variations with neutron transport simulation involving OpenMC. The calculation results show that the heterogeneous core configuration of 5 fuel variations for the keff value is more optimal than 3 fuel variations, because it has the smallest excess reactivity value. The neutron flux and fission rate characteristics for 5 fuel variations are more evenly distributed when compared to 3 fuel variations to maintain neutron lifetime and reactor life in operation. Burn-up residual plutonium material and minor actinide waste for 5 fuel variations have less mass than 3 fuel variations. The results of neutronic analysis of GFR reactors with heterogeneous reactor core designs for 5 fuel variations are better in terms of reactor criticality, neutron power distribution, and waste produced. Finally, optimization of the UN-PuN fuel volume fraction of 60 % provides the optimal keff value
Development of a solution search method using a combined bio-inspired algorithm
Authors: Thamer Khudhair Abed , Sova Oleg , Shaposhnikova Olena , Yashchenok Volodymyr , Stanovska Iraida , Shostak Serhii , Rudenko Oleksandr , Petruk Serhii , Matsyi Olha , Kashkevich Svitlana
Published: March 2024

The object of the study is decision support systems. The subject of the study is the decision-making process in management problems using a combined bio-inspired algorithm, consisting of:
– the improved wolf optimization algorithm and the improved sparrow search algorithm – for solving optimization problems regarding the object state;
– an advanced genetic algorithm – for selecting the best agents in flocks;
– an advanced training method – for deep training of agents to improve the optimization characteristics of agents.
A solution search method using an improved bio-inspired algorithm is proposed. The method has the following sequence of actions:
– input of initial data;
– initialization of the search for a flock of sparrows and its parameters;
– ranking and selection of sparrow agents using an advanced genetic algorithm;
– updating the sparrow location for the discoverer;
– checking the conditions for updating the position of sparrows;
– initialization of additional search parameters;
− running the gray wolf optimization algorithm;
– training agents’ knowledge bases;
– determining the amount of necessary computing resources of the intelligent decision support system.
The originality of the proposed method lies in the combined use of bio-inspired algorithms, setting agents taking into account the uncertainty of the initial data, advanced global and local search procedures. The method makes it possible to increase the efficiency of data processing at the level of 19 % using additional improved procedures. The proposed method should be used to solve the problems of evaluating complex and dynamic processes in the interest of solving national security problems
Establishing patterns in reducing fire-dangerous properties of sip panels fire-protected with reactive coating
Authors: Tsapko Yuriy , Tsapko Аleksii , Likhnyovskyi Ruslan , Sukhanevych Maryna , Zapolskiy Leonid , Illiuchenko Pavlo , Bedratiuk Olga
Published: March 2024

An issue related to using SIP panels for building structures is to ensure their stability and durability during operation in wide ranges. Therefore, the object of research was the change in the properties of wood-polymer material in case of fire and its protection when applied with a reactive coating capable of forming a pinocoke layer under the influence of high temperature on the coating. It has been proven that in the process of thermal action on the fire-resistant coating, the heat insulation process of SIP panels involves the formation of soot-like products on the surface of the material. Thus, under the action of the radiation panel on the surface of the OSB sample, after 120 s of thermal exposure, the process of intensive formation of a layer of foam coke, which thermally insulated the wood-polymer material, began; instead, after the radiation panel was exposed to the fire-resistant polystyrene foam sample, the process of destruction began at a temperature of about 100 °C polystyrene foam. When determining the flammability of a fire-resistant SIP panel, it was established that the temperature of the flue gases during the tests was no more than 110 °C, the length of the damaged sample did not exceed 460 mm. At the same time, the mass loss did not exceed 200 g, and independent combustion of the SIP panel sample did not occur despite the high temperature. According to these data, the SIP panel, fire-resistant with a reaction coating, belongs to group G1 (low flammability) and is a non-flammable material. The practical significance is that the results were taken into account during the design of buildings from SIP panels. So, there are reasons to assert the possibility of targeted regulation of the fire protection processes of SIP panels through the use of reactive coatings capable of forming a protective layer on the surface of the material that inhibits the rate of heat transfer
Optimization of the LEACH algorithm in the selection of cluster heads based on residual energy in wireless sensor networks
Authors: Fachrizal Ferry , Zarlis Muhammad , Sihombing Poltak , Suherman Suherman
Published: March 2024

This research has a research object, namely the optimization of the LEACH (Low-Energy Adaptive Clustering Hierarchy) algorithm in the context of wireless sensor networks. The problem in this research is the imbalance in energy consumption across clusters, which has an impact on battery life and affects network performance. Other problems include selecting a cluster head that is not focused so that it is difficult to balance network performance as well as computational limitations that require optimization. The results obtained from this research are in the form of optimizing the leaching algorithm by modifying the clustering-based leaching algorithm that will be used in wireless sensor networks. In carrying out modifications, this research uses several stages in the process of selecting sensor nodes that will become members who function as cluster heads in a cluster that will be used in a wireless sensor network. In the LEACH (Low-Energy Adaptive Clustering Hierarchy) algorithm the cluster head will be selected based on the modified probability value. Modifying the algorithm by considering two factors, namely distance and remaining energy used in the Cluster Head selection process on the network and increasing network usage time must be based on the energy consumption used and then compared with the remaining energy. When modifying the LEACH (Low-Energy Adaptive Clustering Hierarchy) algorithm, it is necessary to pay attention to the distance factor between the nodes on a sensor and the selected cluster so that it can result in increased network performance. Network lifetime is indicated by the average death time of the first Node in the network. This research is novel in producing a modified leaching algorithm by improving network performance and extending battery life so that it can be used for wireless sensor networks in the context of natural disaster mitigation
Improving the technology of oxidative stabilization of rapeseed oil
Authors: Staroselska Nataliia , Korchak Mykola , Ovsiannikova Tetiana , Falalieieva Tetiana , Ternovyi Oleksandr , Krainov Valerii , Mohutova Valentyna , Morozova Liubov , Chudak Roman , Mylostyvyi Roman
Published: March 2024

The object of the research is the oxidation process of rapeseed oil.
Rapeseed oil is used for technical purposes, in the chemical and food industries, in particular, in the production of ecological fuel. Vegetable oils are subjected to oxidative deterioration processes, which are intensified under the conditions of access to oxygen, elevated temperatures, etc. Oxidation products worsen the technological properties and complicate the use of oils in chemical reactions. An important task is to improve the technology of oxidative stabilization of rapeseed oil, which is of great industrial importance.
The oxidation process of refined deodorized rapeseed oil according to DSTU 8175 (CAS Number 120962-03-0) at a temperature of 110 °C was studied by the method of differential scanning calorimetry. The influence of different ratios of antioxidants (tocopherol, butylhydroxyanisole and butylhydroxytoluene) in the mixture on the oil induction period was determined. The total concentration of the antioxidant mixture in each experiment was 0.02 %. The induction period of the initial oil is 408.48 min. The rational ratios of the components of the antioxidant mixture were determined: tocopherol: butylhydroxyanisole (75:25) %; tocopherol: butylhydroxyanisole: butylhydroxytoluene (66.67:16.67:16.67) %. The corresponding oil induction periods were 579.75 min. and 561.55 min.
The physico-chemical indicators of rapeseed oil after 12 months of storage at a temperature of (20±2) °C in its original form and with the addition of the developed antioxidant mixtures were determined. The peroxide value of the oil was 12.5, 4.59, 6.45 ½ O mmol/kg, respectively.
The research results allow improving the technology of oxidative stabilization of rapeseed oil at elevated and standard temperatures. This will help to extend the oil shelf life, more efficiently and rationally use the oil in various areas
Monitoring of aviation personnel potential according to the competence approach
Authors: Koshekov Kayrat , Kalekeyeva Marina , Seidakhmetov Beken , Kaliyeva Gulzhan , Assilbekova Indira , Gozhakhmetova Madina
Published: March 2024

The object of the study is the personnel potential of aviation. The paper considers the problem of the effectiveness of monitoring the quality of airline personnel. According to the results of the study, it was stated that the stable growth in the volume of international cargo and passenger air transportation requires full-fledged provision of aviation with highly qualified specialists, a shortage of which has been observed in airlines in most countries of the world for several years. It is emphasized that a shortage of highly qualified specialists can be avoided only with the introduction of monitoring of the qualitative composition of the aviation personnel potential according to the competence approach. An algorithm has been developed for monitoring the qualitative composition of human resources based on the audit of compliance of professional competencies of civil aviation personnel with international standards of ICAO (International Civil Aviation Organization), EASA (European Union Aviation Safety Agency), IATA (International Air Transport Association) using triangulation of mixed methods. The expediency of using the monitoring results as a fundamental basis for building a centralized information platform with open access to information resources on the qualitative composition of the personnel potential of airlines and the industry is justified. It is reasonable that the implementation in practice of the algorithm for monitoring human resources according to the competence approach will allow stakeholders to have a clear understanding of the level of professional competence of personnel and the need to improve it in the short term, which will accelerate the elimination of the existing shortage of highly qualified specialists by timely taking measures to amend state programs for training civil aviation specialists, improving their qualifications and certification. It is emphasized that the application of this algorithm is possible in the presence of a sectoral qualifications framework
Defining innovative areas and prospects to develop the patenting of technological advances in the automotive power plant industry
Authors: Mishchenko Mykyta
Published: March 2024

The object of this study is the field of patenting of technological advances registered in the world in the field of automotive power plants. The subject of the study is the dynamics of patenting in the automotive power plant industry, associated with the need to harmonize the trajectories of technological development with global trends in energy efficiency and manufacturability, in order to ensure sustainable economic growth. Patenting in the industry is considered in the following areas: gasoline engines, diesel engines, hybrid cars, electric cars, hydrogen cars. The relevance of this study is determined by the general desire of society to innovate through the latest tools and the introduction of systemic measures to comprehensively address the problem of increasing energy efficiency and reducing air pollution caused by road transport. The paper analyzes the statistics of patents registered in the world, examines patent activity and trends in the patenting of technological advances in the automotive industry from 2010 to 2022. In the industry of gasoline and diesel engines, hybrid vehicles, electric vehicles and hydrogen vehicles, the current work investigates through systematization and analysis of important aspects of patenting statistics and innovation dynamics. For the period of 2017–2022, the average increase in the number of registered patents per year compared to the previous period was found to be 1.37 times higher for the area of "hybrid vehicles", 1.3 times higher for the area of "electric vehicles", and 26 times higher for the area of "hydrogen vehicles". A comparative analysis of the number of registered patents by areas was carried out, further patenting rates were predicted, and priority areas of research and innovation were identified