bluuebunny/crossref_metadata_2025 huggingface dataset:
Характеристики современных кровельных материалов
Authors: Пантелеев М.А.
Published: August 2023

В данной статье рассмотрены и описаны основные характеристики современных кровельных материалы, их состав, покрытие, конструкция, применение, срок службы.
Внутренние напряжения в строительных материалах методом лазерной интерферометрии
Authors: Пашкова Е.М.
Published: August 2023

В статье показано, что при применении методов лазерной голографической интерферометрии обеспечивается эффективное определение величины и распределения векторов поля перемещений в области зондирующего отверстия. Получены экспериментальные данные о распределении деформационных полей, вызванных внутренними напряжениями, для ряда образцов строительных материалов.
Jacobi stability analysis and restoring parameters of the damped double pendulum
Authors: Sulimov A.V.
Published: August 2023

Jacobi stability for a double damped pendulum was analyzed on the basis of the Kosambi–Cartan–Chern theory making it possible to determine geometric structures and five geometric invariants of the dynamical system. Eigenvalues of the second invariant (deviation curvature tensor) provided the estimate of the Jacobi stability related to the insensitivity measure against disturbances of the system itself and the environment. Such studies are relevant in applications, where it is required to determine the system stability regions according to Lyapunov and Jacobi simultaneously. Inverse problem of restoring the system parameters from indirect information represented by the eigenvalues of the deviation curvature tensor was formulated. For a double pendulum with damping, the Jacobi stability conditions were justified in terms of its free parameters. Solution to the inverse problem of restoring the pendulum parameters was obtained using the optimization approach. When minimizing the regularized criterion function, a new hybrid global optimization algorithm was applied. Numerical example is provided.
Rośliny z rodziny Amaryllidaceae w rzymskiej weterynarii. Część 1 Pory (Allium porrum L.)
Authors: Bartnik Agnieszka
Published: August 2023

W Basenie Morza Śródziemnego pory były popularnym warzywem wykorzystywanym zarówno w kuchni, jak i medycynie. Wielu autorów wypowiadało się na temat właściwości dietetycznych oraz medycznego zastosowania rośliny. Doceniano także jej walory smakowe, co potwierdzają liczne przepisy na dania z pora. W weterynarii por nie był wykorzystywany zbyt często niemniej w IV-wiecznych traktatach weterynaryjnych pojawiły się recepty leków zawierających sok z pora lub samą roślinę. Zgodnie z zaleceniami dodawano go m.in. do leków dla zwierząt cierpiących z powodu chorób układu oddechowego, w tym różnego rodzaju kaszlu, w przypadku obrzęków, zranień, krwawień, krwawych wymiotów lub problemów z oddawaniem moczu. W przypadku pora rodzaje chorób leczonych z jego wykorzystaniem przez weterynarzy nie odbiegały od tych leczonych u ludzi. Antyczni medycy podkreślali m.in. skuteczność rośliny w odniesieniu do chorób układu oddechowego, wskazywali działanie antykrwotoczne, pozytywne oddziaływanie na zmiany skórne itd. Sposób stosowania rośliny przez weterynarzy oraz medyków pokrywa się z ówczesną oceną zakresu jej działania. Różnica między jej stosowaniem w przypadku ludzi i zwierząt, widoczna jest jedynie w dietetyce. Ówcześni ludzie jedli pory często, pod różną postacią, natomiast zwierzętom hodowlanym podawano je jedynie w celach medycznych, nie wchodziły one w skład ich typowej, codziennej diety.
Awareness Context and Social Recognition: Reconsidering a Case Study of “Dialogue” between Different Ethnic Persons in Japan
Authors: Yamaguchi Ken’ichi
Published: August 2023

This study incorporates Honneth’s social recognition into awareness context theory by reconsidering a case study of the dialogue between Zainichi Korean and Japanese people in Japan. It revitalizes the theoretical significance of Strauss’ symbolic interactionism in terms of its focus on power dynamics and conflicts between the majority and minorities that differ in the cultural or ethnic background in modern global society. Incorporating critical theory into symbolic interactionism is a method of enhancing its contemporary significance. However, the discrepancy between them remains unresolved. There are some previous studies on Zainichi Koreans’ dialogue and the public sphere. Still, this case uniquely fits the aim of this study. As a result, it proposes both a substantive theory as a social justice inquiry in Japanese society and a modified formal theory of awareness context by adopting the theoretical perspective coined in this study and using abductive reasoning in the reconsideration. The substantive theory proposes a joint action characterized by unending mutual recognition and pragmatist dissent as a pragmatist public sphere between different ethnic persons in Japan. It is a method of grassroots communication that realizes liberal democracy as the form of modern society in Japan, liberating people from the Japanese communitarian mindset of Wa. The formal theory proposes new awareness contexts focusing on information and social recognition, which applies to the majority-minority relationship that differs in cultural or ethnic backgrounds from a theoretical perspective by focusing on conflicts between traditional cultural communities and modern society. Additionally, as an implication of this study, a pluralistic character of symbolic interactionism united by common frameworks of formal theories is proposed.
Zatrudnienie tymczasowe jako nietypowa forma świadczenia pracy – uwagi na tle obowiązującej regulacji prawnej
Authors: Duraj Tomasz
Published: August 2023

Jedną z nietypowych form świadczenia pracy dynamicznie rozwijających się na polskim rynku pracy jest zatrudnienie tymczasowe, w ramach którego agencja pracy tymczasowej jako pracodawca (podmiot zatrudniający) angażuje pracowników lub osoby niebędące pracownikami w celu kierowania ich do wykonywania pracy tymczasowej na rzecz pracodawcy użytkownika. Według najnowszych danych opracowanych przez Polskie Forum HR liczba pracowników tymczasowych wzrosła z 433 000 w 2010 r. do 648 000 w 2021 r., a szacowana wartość całego polskiego rynku pracy tymczasowej wynosi obecnie ponad 3 mld złotych1. Celem opracowania jest wprowadzenie czytelnika w problematykę zatrudnienia tymczasowego, która była przedmiotem III Ogólnopolskiej Konferencji Naukowej z cyklu „Nietypowe stosunki zatrudnienia” zorganizowanej 3 grudnia 2020 r. w Łodzi, pod kierunkiem prof. UŁ dra hab. Tomasza Duraja, przez Centrum Nietypowych Stosunków Zatrudnienia WPiA UŁ. Autor prezentuje własne refleksje na tle Ustawy o zatrudnianiu pracowników tymczasowych po jej nowelizacji, która weszła w życie 1 czerwca 2017 r.
Zagadnienie czasu pracy w zatrudnieniu tymczasowym
Authors: Jaroszewska-Ignatowska Iwona
Published: August 2023

W artykule przedstawiono zakres uprawnień i obowiązków pracodawcy użytkownika i agencji pracy tymczasowej wobec pracownika tymczasowego w zakresie czasu pracy.
Factors Associated With Domestic Violence Against Peri- and Postmenopausal Women
Authors: Rezaie-Chamani Sedighe , Bostani Khalesi Zahra , Rahnavardi Mona
Published: August 2023

The goal of the study was to determine factors associated with domestic violence in menopausal women. This was a cross-sectional study that 350 menopausal women participated. Data gathering used a World Health Organization’s violence against women instrument. Emotional violence was recognized as one of the most experienced types of domestic violence (48%). According to the multivariate logistic regression model, the status of exposure to sexual violence (before marriage) and the partner’s substance abuse was the most robust risk factors for domestic violence, while factors such as employment of women and satisfaction of income were protective against domestic violence. This study has highlighted the factors associated with domestic violence that health program managers need to address.
Determination of trophic status and carrying capacity of floating net cages in Jatigede Reservoir
Authors: Kristina  Marsela  , Dadan Sumiarsa  , Denny Kurniadie
Published: August 2023

Aquaculture activities with floating net cages are essential to increase fishery production. However, The fish cages in the Jatigede Reservoir are illegal because they are against local government regulations. However, the people affected by the dam's construction still maintain it for economic reasons. Therefore, it is necessary to conduct research to address these problems by determining the carrying capacity of aquaculture and evaluating the trophic status of the waters. Determination of the carrying capacity of fish farming in the Jatigede Reservoir was conducted using the Beveridge method. by calculating the remaining phosphorus still available in the Jatigede Reservoir and evaluating the trophic state index based on three indicators: transparency, total phosphorus, and chlorophyll-a. The sampling was carried out by purposive sampling method. The calculation results show that the condition of the Jatigede Reservoir was eutrophic to hypertrophic with a trophic state index (TSI) value of 66-71. The results of calculating the carrying capacity of cage aquaculture using class 3 water quality standards. Indicate that Jatigede Reservoir waters can still increase fish production by 7,140.25 tons of fish/year, provided that fish replace the primary fish commodities cultivated.
 
Keywords: aquaculture, cage aquaculture, carrying capacity, eutrophication, Jatigede Reservoir.
 
ABSTRAK
 
Kegiatan budidaya dengan keramba jaring apung (KJA) sangat penting untuk meningkatkan produksi perikanan. Keberadaan KJA di Waduk Jatigede merupakan kegiatan ilegal karena bertentangan dengan peraturan pemerintah setempat. Namun, masyarakat yang terkena dampak pembangunan waduk tetap mempertahankannya karena alasan ekonomi. Oleh karena itu, perlu dilakukan penelitian untuk mengatasi permasalahan tersebut dengan menentukan daya dukung perikanan budidaya dan mengevaluasi status trofik perairan. Penentuan daya dukung budidaya ikan di Waduk Jatigede dilakukan dengan menggunakan metode Beveridge dengan menghitung sisa fosfor yang masih tersedia di Waduk Jatigede dan mengevaluasi indeks status trofik berdasarkan tiga indikator yaitu transparansi, total fosfor, dan klorofil-a. Pengambilan sampel dilakukan dengan metode purposive sampling. Hasil perhitungan menunjukkan bahwa kondisi Waduk Jatigede adalah eutrofik hingga hipertrofik dengan nilai indeks kondisi trofik (TSI) 66-71. Hasil perhitungan daya dukung budidaya perikanan keramba dengan menggunakan baku mutu air kelas tiga. Perairan Waduk Jatigede masih dapat meningkatkan produksi ikan sebesar 7.140,25 ton ikan/tahun, dengan catatan ikan menggantikan komoditas ikan utama yang dibudidayakan.
 
Kata Kunci: akuakultur, daya dukung, eutrofikasi, keramba jaring apung, Waduk Jatigede
Combustion of LPG / DME gas mixtures in an SI engine with correction of the ignition advance angle
Authors: Kubica Grzegorz
Published: August 2023

The paper presents the results of tests on a SI engine fueled with an LPG/DME blends of various composition. A number of experimental studies and calculations using a mathematical model were carried out to examine the suitability of this fuel. These tests allowed for the analysis of the changes taking place in the combustion process and the assessment of the main operating parameters of the engine. The results of the analysis of the combustion process make it possible to observe how the heat is released and how the indicated pressure changes, depending on the share of DME in the fuel mixture. The scope of the tests performed included engine and vehicle tests on a chassis dynamometer and a series of simulation tests conducted on the basis of the obtained results. The engine was powered by an LPG/DME fuel mixture with different proportions of components. The share of DME ranged from 0% to 30% of the fuel mass. The obtained results reflect the operation of the engine in the full load range and selected rotational speeds. Measurement series were made for different settings of the ignition advance angle. Based on the obtained results, a corrected map of the ignition advance angle was developed. The obtained results confirm the usefulness of using the LPG/DME mixture to power the SI engine.
Nuevas reglas de contratación en los sistemas universitario y de investigación
Authors: Gimeno Díaz de Atauri Pablo
Published: August 2023

La Ley Orgánica del Sistema de Universidades (LOSU) y la reforma de la Ley de Ciencia han establecido un marco normativo que busca alterar de forma sustancial la política de contratación de las universidades públicas y los centros públicos de investigación. En este trabajo se analizan, partiendo de la situación actual del Personal Docente e Investigador, las distintas figuras reguladas, en términos comparativos con las preexistentes, y en la lógica del diseño de una nueva carrera investigadora. La indefinición de muchos de los aspectos, la ausencia de consecuencias claras por el incumplimiento de las obligaciones de estabilidad impuesta, y la dependencia de las eventuales mejoras presupuestarias en la financiación universitaria, arrojan algunas dudas importantes sobre la eficacia de estas reformas en la estabilidad en el empleo en los ámbitos de la investigación pública.
THE VARIANT ANATOMY OF PULMONARY VEINS OF PEOPLE OF DIFFERENT BODY TYPES
Authors: Chaplygina Elena V. , Kaplunova Ol'ga A. , Aboyan Igor' A. , Chernousov Vitaly V. , Kornienko Natal'ya A. , Karakozova Elena A.
Published: August 2023

Cardiovascular diseases occupy a central place in the structure of morbidity and mortality in various population groups and in most cases occur with a heart rhythm disorder. One of the most common types of arrhythmia is atrial fibrillation, the morphological substrate for the development of which is the left atrium and the region of the pulmonary veins. In connection with the introduction of modern imaging systems into the practice of cardiac surgery, which enable a detailed study of the anatomy of the heart and its separate chambers, there is a need to study the features of the variant anatomy of the pulmonary veins of the human left atrium in the aspect of modern interventional cardiac surgery, which will make it possible to secure and accelerate surgical interventions performed in this area. The purpose of the study was the revealing of variant anatomy of the pulmonary veins using multislice computed tomography, depending on body type and gender. Heart tomograms of 70 patients were analyzed (8 of the 1st period of adulthood, 23 of the 2nd period of adulthood, 37 of the elderly, 2 of the senile age). Among them were 47 men - 67.1% and 23 women - 32.9%. As a result of the analysis of the obtained data, four variants of the confluence of the pulmonary veins into the left atrium were identified. Among all observations, a typical variant of the confluence of the pulmonary veins into the left atrium occurs in 78.6% of cases, in 85.7% of cases - in persons of the pyknic type, in 85.0% of cases - in the examined asthenic type and in 69.0% of cases - in representatives of the normosthenic body type. Less common are the common pulmonary vein collector on the left (12.9%), as well as the accessory pulmonary vein on the right (7.1%). An extremely rare anatomical variant was the common pulmonary vein collector on both sides (1.4%). Thus, the anatomy of the distal pulmonary veins is characterized by significant variability, there is a slight relationship with gender and body type. An in-depth study of the anatomy of the pulmonary veins remains relevant for the effective implementation of surgical interventions in this anatomical zone.
THE INFLUENCE OF ANGULAR PARAMETERS OF THE LOWER JAW ON THE LOCALIZATION OF ITS FRACTURES IN AN ADULT
Authors: Guyvoronsky Ivan V. , Guyvoronskaya Mariya G. , Semyonova Anastasiya A. , Shashkov Vladimir A.
Published: August 2023

The frequency of mandibular fractures averages 45–90% of cases of all cases of damage to the bones of the facial skull. Cone-beam computed tomography is the most informative method for diagnosing pathological processes, the nature and degree of damage to the jaws, as well as when planning their surgical treatment, which allows assessing both the nature of the fracture and the value of the main parameters of the jaws necessary to create intraoperative templates. In order to study the sex and age characteristics of the angular parameters of the lower jaw and their interrelation with the nature of its fractures, a study was conducted on 150 bone preparations of the lower jaws and 300 computed tomograms of patients with fractures of the lower jaw. It was established that the angle of the condyle-coronoid line and the angle of the notch were significantly greater in men, and the angle of the lower jaw - in women. It has been proven that with age there is a significant change in the studied angular parameters, which is primarily associated with the loss of teeth. The values of the angle of the lower jaw in elderly and senile people are on average 11,2% higher than in adulthood, and the angle of the condyle-coronoid line significantly decreases with age by an average of 7°. It has been proved that when the value of the angle of the lower jaw is close to the right one, the fracture line is significantly more often localized in the area of the incisors in 31,7% of cases of observations, the canines and premolars - in 20,8% of cases of observations. Fractures in the area of the condylar process in women, unlike men, in the overall structure of fractures exceed the frequency of fractures in the area of its angle. Thus, the angular parameters of the lower jaw have pronounced gender and age differences, which have a direct impact on the nature and localization of fractures of this bone. As a result, the greater the angle of the lower jaw, the greater the likelihood of its single fractures, the smaller the angle of the condyle-coronoid line, the greater the likelihood of fractures in the area of the condylar process.
THE MODULARITY OF THE FINGERS AS A SOURCE OF MORPHOLOGICAL VARIATIONS OF THE HUMAN HAND'S SHAPE DEPENDING ON SEX
Authors: Ermolenko Aleksandr S.
Published: August 2023

According to the latest achievements in animal morphology and paleo-morphology, the phenomena of modularity and integration are quite closely interconnected, while morphological integration describes the extent to which various structural features are related to each other in the process of morphogenesis, while modularity reflects the rate of evolutionary transformation, which determines the degree of this conjugation. One of the classical objects of study of modularity and integration in morphology is regularly segmented skeletal structures, in particular, the hand. In humans, the hand is characterized mainly by the ratio of the lengths of the index and ring fingers, while their position and the value that determines the structure of the hand as a whole in the space of its shape has not yet been studied. In this paper, the influence of the modules of the fingers on the shape of the hand in the framework of their morphological integration was determined, which became the main goal of the study. The method of geometric morphometry of digital images of radiographs of the right hands of 100 people was used, on which the coordinates of 16 landmarks of the phalanges of the II-V fingers were determined, followed by a study of the shape, covariance and modularity. The results showed that changes in the shape of the hand are due to the position of the II-V fingers in space, with the ulnar type of the hand (2d<4d) there is a displacement of the II-III fingers in space in the distal direction and IV-V fingers in the proximal direction, with the radial type of the hand (2d>4d) reverse transformations in space are observed. The position of the second finger in space largely affects the shape of the hand as a whole. An analysis of the modularity of the fingers indicates a significant integration between them, compared with the integration of other modules of the hand. The high values of covariance revealed as a result of the study in pairwise comparison of the modules of the fingers and lower values of covariance in the multiple comparison between the modules of the hand indicate a different degree of local influence of morphogenetic factors on the structural features and shape of the hand in people of different sexes.
Anti-obesity effects of Camellia (Camellia oleifera Abel) oil treatment on high-fat diet-induced obesity in C57BL/6J mice
Authors: Chilakala Ramakrishna , Moon Hyeon Jeong , Kim Kiwoong , Yang Soyoung , Cheong Sun Hee
Published: August 2023

[Purpose] In the current study, we investigated the effects of camellia oil and camellia oil infused with herbs (Camellia oleifera Abel) on obesity in obese mice fed a high-fat diet (HFD).[Methods] The antioxidant activity of camellia oil in scavenging free radicals was investigated. Additionally, body and organ weight changes, serum and liver marker parameters, antioxidant enzyme activities, liver and epididymal fat histology, protein and gene expression associated with lipogenesis and hyperglycemia effect on adenosine monophosphate-activated protein kinase (AMPK) phosphorylation, were examined in HFD-induced obese mice.[Results] The hepatic steatosis and epididymal fat were significantly reduced by the oral administration of camellia oil and herb-infused camellia oil. Moreover, hepatic and serum marker parameters such as total cholesterol, insulin, triglycerides, tumor necrosis factor-α, adiponectin, thiobarbituric acid reactive substances, aspartate aminotransferase, and alanine transaminase were beneficially impacted. Additionally, the activity of antioxidant enzymes also increased. Camellia oil and herb-infused camellia oil treatments reduced the expression of genes linked to hyperglycemia and lipogenesis via activation of AMPK phosphorylation.[Conclusion] For many people, exercise poses an obstacle in the daily routine due to lack of ease, difficulty in maintaining consistency, and hard work. Camellia oil combined with herbs has anti-obesity and antihyperglycemic effects. These findings indicate that treatment with herb-infused camellia oil is most beneficial for elderly individuals who do not prefer frequent exercise.
Розробка та аналіз гнучкої компактної антени інтегрованої з AMC-рефлектором для систем автомобільного зв’язку
Authors: Бадіса Аніл Бабу , Мадхав Боддапаті T. П. , Срілатха Кантамнені , Чілларіге Амруха В. , Баттула Вініл , Гарімелла Чандіні В. Л.
Published: August 2023

В роботі представлено гнучку, компактну, напівпрозору монопольну антену, інтегровану з AMC-рефлектором 2×2, призначену для систем автомобільного зв’язку. Перевернуті F-подібні та L-подібні шлейфи з’єднані з випромінювачем симетрично та наявність щілей у заземленні забезпечують роботу антени в діапазоні 5,85 ГГц. Антена розроблена з використанням гнучкої поліімідної підкладки (εr = 3,5, tgδ = 0,025) з розмірами 14×14×0,5 мм3. Елементарна комірка AMC-рефлектора розроблена з використанням підкладки з ПДМС (полідиметилсилоксан) (εr = 2,66, tgδ = 0,023) з розмірами 8×8×1 мм3. Коміркова структура AMC-рефлектора складається з резонатора з роздільним кільцем SRR (split ring resonator) і прямокутного кільця з суцільною смужкою заземлення, резонансна частота якого дорівнює 5,85 ГГц. Поверхня 2×2 AMC-рефлектора інтегрована до розробленої антени і знаходиться на відстані 9 мм до неї, що забезпечує приріст коефіцієнту підсилення від 1,73 до 4,56 дБі. Смуга пропускання коефіцієнта відбиття S11 антени з вбудованим AMC-рефлектором становить 0,52 ГГц, тоді як смуга пропускання окремої антени становить 0,44 ГГц. Гнучкість, компактність і отримані показники випромінювання роблять запропоновану структуру антени підходящою для застосування в системах зв’язку в транспортних засобах.
Тиристори, що керуються світлом і магнітним полем
Authors: Вікулін Іван Михайлович , Вікуліна Лідія Федорівна , Марколенко Павло Юрійович , Назаренко Олександр Аскольдович
Published: August 2023

Експериментально досліджено вплив зовнішнього магнітного поля на вольтамперні характеристики планарного кремнієвого фототиристора. Показано, що магнітне поле однієї полярності з індукцією 0,4 Тл призводить до такого зменшення напруги перемикання Uп, як і випромінювання світлодіода при струмі 8 мА. Однак, магнітне поле протилежної полярності дозволяє збільшувати Uп. Наведено формули для розрахунку залежності Uп від магнітного поля. Збільшення магніточутливості досягається розташуванням на протилежному від електродів боці бази тиристора області з високою швидкістю рекомбінації інжектованих носіїв заряду. Подвійне безконтактне керування Uп фототиристора світлом та магнітним полем дозволяє значно збільшити його функціональні можливості. Оскільки світлом можна тільки вмикати тиристор, то за допомогою дії магнітного поля можливо також його відключення. Показано, що в якості оптронів, що керуються світлом і магнітним полем, можуть бути використані існуючі промислові оптрони, а магнітокерований тиристор може бути використаний як простий безконтактний перемикач.
Двошаровий Т-подібний навантажений шпильковий резонатор для двоcмугового смугопропускного фільтра з покращеними параметрами
Authors: Мохаммед З. А. , Хаммед Р. Т.
Published: August 2023

В статті розроблено простий високоефективний компактний двосмуговий фільтр на основі багатошарового Т-подібного навантаженого шпилькового резонатора T-SLHR (T-shape loaded hairpin resonator). В схемі розробленого фільтра використано дві підкладки. На заземленій площині першої підкладки реалізовані два резонатори T-SLHR, які електрично зв’язані через просторовий зазор S, завдяки чому досягається необхідна подвійна смуга пропускання. На другій незаземленій підкладці розташовується заземлений шпильковий шлейф, вхід/вихід якого з’єднується з T-SLHR для отримання необхідної характеристики фільтра. Для перевірки запропонованої концепції реалізовано двосмуговий смуго-пропускний фільтр BPF (bandpass filter) для системи багатоканальної бездротової мережі, що працює на центральних частотах 2,4 ГГц і 3,5 ГГц. Крім того, на основі теорії непарних і парних мод аналізується можливість генерації заданих частот за допомогою T-SLHR. Також, представлена блок-схема за допомогою якої пояснюється механізм зв’язку та очікувані характеристики фільтра. Крім того, змодельований фільтр був виготовлений, і отримані результати вимірювань і моделювання порівняні та проаналізовані. Виготовлений фільтр має досить малу площу менше 126 мм2, високу вибірковість завдяки високій крутизні скатів характеристики фільтра та високий рівень смуг загородження.
Комп’ютерне моделювання як інструмент синтезу оптичних локаторів
Authors: Лепіх Ярослав Ілліч , Янко Володимир , Сантоній Володимир , Проценко В'ячеслав
Published: August 2023

Запропоновано спосіб узагальненого комп’ютерного моделювання оптичних локаторів (ОЛ), що базуються на всіх відомих методах: амплітудному, тріангуляційному, фазовому та TOF (time of flight), зокрема їх роботі в динаміці просторової взаємодії з об’єктом та завадами. Метод складається з моделювання низки фізичних явищ, яке організовано у алгоритм дій з об’єктами декількох програм комп’ютерного проектування (CAD). Обґрунтована ефективність інтелектуальних алгоритмів обробки сигналів як головного тренду до досягнення довершеного стану ОЛ. Здійснено аналіз технології синтезу пристроїв ОЛ та її розвитку у ретроспективі. Розглянуто причини та сутність зростання ваги комп’ютерного моделювання у складі інструментарію сучасних технологій проектування ОЛ. Наведено класифікацію та структурований перелік методів комп’ютерного моделювання окремих елементів ОЛ. Описана сутність та надано визначення новому корисному засобу аналізу функціонування приладів ОЛ, для якого запропоновано назву: узагальнена PSPICE модель оптичної локаційної системи. Описана сутність та надано визначення методу дискретно-часового варіювання параметрів узагальненої PSPICE моделі оптичної локаційної системи як засобу розширення можливостей моделі. Наведені випадки, за яких наведена модель дозволяє перевірити працездатність розробки до її прототипування. Наведено рамковий алгоритм синтезу ОЛ у вигляді структурованої таблиці з ілюстрованими прикладами об’єктів проектування.
Design Study for the Construction of Turbo Roundabouts Under Constrained Site Conditions
Authors: Sołowczuk Alicja , Majer Stanisław
Published: August 2023

Turbo-roundabouts are one of the most frequently recommended road junction design options when it comes to increasing traffic capacity and traffic safety. This is in particular true of suburban areas, with dominant traffic flow on the main road and moderate traffic flow on the side road. Other intersections handling local traffic and considerably constricting the availability of space are usually located in the vicinity of such intersections. Another factor contributing to less availability of land for construction in these locations is the presence of surrounding residential housing. Then choosing the suitable turbo-roundabout type becomes the main issue. The article presents a case study for the selection of a type of turbo roundabout under the conditions of considerably constricted land availability, based on analyses of provision of swepth path for the chosen design vehicles. The article considers the typical Egg type turbo roundabouts, "flattened" turbo roundabouts and ellipse based roundabouts, with unconventional geometries of the truck apron and central island. For each of the analysed roundabout types setting out methods were described in detail, which enable designers to quickly select a type of roundabout suitable for specific constrained site conditions.
Short-term Prediction of Multi-energy Loads Based on Copula Correlation Analysis and Model Fusions
Authors: Xie Min , Lin Shengzhen , Dong Kaiyuan , Zhang Shiping
Published: August 2023

To improve the accuracy of short-term multi-energy load prediction models for integrated energy systems, the historical development law of the multi-energy loads must be considered. Moreover, understanding the complex coupling correlation of the different loads in the multi-energy systems and accounting for other load-influencing factors, such as weather, may further improve the forecasting performance of such models. In this study, a two-stage fuzzy optimization method is proposed for the feature selection and identification of the multi-energy loads. To enrich the information content of the prediction input feature, we introduced a copula correlation feature analysis in the proposed framework, which extracts the complex dynamic coupling correlation of multi-energy loads and applies Akaike information criterion (AIC) to evaluate the adaptability of the different copula models presented. Furthermore, we combined a NARX neural network with Bayesian optimization and an extreme learning machine model optimized using a genetic algorithm to effectively improve the feature fusion performances of the proposed multi-energy load prediction model. The effectiveness of the proposed short-term prediction model was confirmed by the experimental results obtained using the multi-energy load time-series data of an actual integrated energy system.
Modelled Multidecadal Trends of Lightning and (Very) Large Hail in Europe and North America (1950–2021)
Authors: Battaglioli Francesco , Groenemeijer Pieter , Pucik Tomas , Taszarek Mateusz , Ulbrich Uwe , Rust Henning
Published: August 2023

We have developed additive logistic models for the occurrence of lightning, large (≥ 2 cm), and very large (≥ 5 cm) hail to investigate the evolution of these hazards in the past, in the future, and for forecasting applications. The models, trained with lightning observations, hail reports, and predictors from atmospheric reanalysis, assign an hourly probability to any location and time on a 0.25° × 0.25° × 1-hourly grid as a function of reanalysis-derived predictor parameters, selected following an ingredients- based approach. The resulting hail models outperform the Significant Hail Parameter and the simulated climatological spatial distributions and annual cycles of lightning and hail are consistent with observations from storm report databases, radar, and lightning detection data. As a corollary result, CAPE released above the -10°C isotherm was found to be a more universally skilful predictor for large hail than CAPE. In the period 1950–2021, the models applied to the ERA5 reanalysis indicate significant increases of lightning and hail across most of Europe, primarily due to rising low-level moisture. The strongest modelled hail increases occur in northern Italy with increasing rapidity after 2010. Here, very large hail has become 3 times more likely than it was in the 1950s. Across North America trends are comparatively small, apart from isolated significant increases in the direct lee of the Rocky Mountains and across the Canadian Plains. In the southern Plains, a period of enhanced storm activity occurred in the 1980s and 1990s.
Shaped-based Tightly Coupled IMU/Camera Object-level SLAM
Authors: Asl Sabbaghian Hokmabadi Ilyar , Ai Mengchi , El-Sheimy Naser
Published: August 2023

Object-level Simultaneous Localization and Mapping (SLAM) has gained popularity in recent years since it can provide a means for intelligent robot-to-environment interactions. However, most of these methods assume that the distribution of the errors is gaussian. This assumption is not valid under many circumstances. Further, these methods use a delayed initialization of the objects in the map. During this delayed period, the solution relies on the motion model provided by an Inertial Measurement Unit (IMU). Unfortunately, the errors tend to accumulate quickly due to the dead-reckoning nature of these motion models. Finally, the current solutions depend on a set of salient features on the object’s surface and not the object’s shape. This research proposes an accurate object-level solution to the SLAM problem with a 4.1 to 13.1 cm error in the position (0.005 to 0.021 of the total path). The developed solution is based on Rao-blackwellized Particle Filtering (RBPF) that does not assume any predefined error distribution for the parameters. Further, the solution relies on the shape and thus can be used for objects that lack texture on their surface. Finally, the developed tightly coupled IMU/camera solution is based on an undelayed initialization of the objects in the map.
An Experimental Study on the Bond-Slip Relationship between Rebar and the UHPC Grouted in Bellows
Authors: Wang Zhongling , Zheng Xiaohong , Wang Qiqi , Wang Qian
Published: August 2023

The UHPC grouted bellow is an innovative technology for connecting assembled buildings, where the anchorage performance of the rebar and UHPC filled in bellows plays a critical role in determining the overall connection effectiveness. To ascertain a dependable anchorage length and establish a bond-slip relationship between the rebar and UHPC within the bellow, we conducted tests on 8 groups of 16 specimens of metal corrugated pipes filled with UHPC and rebar under tension. The tests considered varying parameters such as the aperture ratio D/d and anchorage length L. By analyzing the failure modes, load versus deflection curves, and steel strain data, we gained valuable insights into the influence of the aperture ratio and anchorage length on the anchorage performance. Furthermore, we calculated the experimental curve of the bond-slip relationship between the rebar and the UHPC interface grouted in the bellows and derived a bond-slip model through fitting. These findings serve as a crucial foundation for the force analysis of assembled structures connected using UHPC grouted bellows.
SIMULATION OF INTERACTION OF WAVES WITH THE PROTECTIVE DAM OF THE DANUBE – BLACK SEA MARINE CHANNEL
Authors: Voskoboinick Volodymyr , Voskoboinyk Oleksandr , Voskobiinyk Andriy , Kharchenko Anatoliy
Published: August 2023

Ensuring uninterrupted navigation on the Danube River and the shortest exit to the Black Sea is a priority direction for the implementation of the seventh international transport corridor, which unites the countries of Europe and Asia. For this purpose, the protection dam of the Marine channel of the Danube-Black Sea deep-sea passage was built, which was partially destroyed by storm waves and ice load. This made it necessary to carry out scientific researches in order to strengthen the operational stability of the dam and ensure its effective use. The paper presents the results of numerical and physical simulation of the interaction of waves with the protective dam of the Marine channel of the Danube-Black Sea and loads on the dam structure. Mathematical simulation was performed using the SWAN refraction and spectral model, as well as the XBeach model. Experimental research was carried out in laboratory conditions in a wave channel. The estimated distribution of the wave field near the dam under storm surge conditions was obtained and the space-time characteristics of wave pressure fluctuations on the streamlined surface of the protective dam model were determined. Integral and spectral characteristics of the pressure fluctuation field were obtained and a multi-stage form of a dam with two berms was proposed, which significantly reduced the wave load and was resistant to storm waves. The berms performed the functions of underwater breakwaters and significantly reduced the energy of the wave impact on the upper part of the dam. The optimal shape of the dam and the geometric parameters of its frontal surface were determined. It is proposed to build the seaward part of the protective dam under natural conditions with the following parameters: a lower deep-water slope with a slope of 1 : 1,5, then at a depth of 4 m a lower berm with a width of 10 m. Then make a slope with a slope of 1 : 5, and then at a depth of 2 m to install an upper berm with a width of 10 m. It is recommended to finish the protective dam of the Marine channel of the Danube-Black Sea deep-sea passage with a ridge with a slope of 1 : (3 – 3,5). The facing of the frontal part of the dam should be made of stone overburden with stones of fraction 1,2 m.
METHODS OF CONTROLLING BOUNDARY TRANSPARENCY IN NON-HOMOGENOUS ELASTIC WAVEGUIDES
Authors: Gorodetska Natalia , Starovoit Inna , Shcherbak Tatiana
Published: August 2023

The work is devoted to the development of methods for controlling the efficiency of energy transfer in a composite elastic waveguide. Based on the analysis of the scattered field at the boundary of the stepped waveguide, formed by the rigid contact of two half-layers with the same mechanical characteristics, but with the different thicknesses, the main factors that affect the transparency of the interface were established. Harmonic oscillations generated by the first normal wave propagating from infinity in the narrower half-layer were considered. Mathematical difficulties of the posed boundary problem are due to the presence of a local singularity in the stresses at the point of change of the boundary conditions at the boundary of the two hemispheres. The solution is built by the superposition method, which allows taking into account the local singularity due to the asymptotic features of the unknowns. The quality criterion of the obtained solution was the control of the accuracy of the fulfillment of the conjugation conditions at the boundary of the two half-layers. The main attention in the work is focused on establishing the conditions for changing the transparency of the boundary depending on the frequencies, the symmetry of the oscillations, and the ratio of the half-layer widths. It was shown in the work that for both symmetric and antisymmetric oscillations of a stepped waveguide, there are frequency ranges in which the transparency of the boundary changes significantly. For both types of symmetry, in the frequency range up to the critical frequency for the third propagating normal wave, there are two frequency ranges in which the transparency of the boundary increases rather sharply. The frequencies at which local energy maxima are observed in the reflected field are different for symmetric and anti-symmetric oscillations. For symmetric oscillations, the first energy maximum in the reflected field is observed at the frequency when only one wave can propagate in both half-layers. This effect is due to the increase in the role of inhomogeneous waves in the transmitted field. The second energy maximum in the reflected field is due to the transformation of the energy of the incident wave into propagating waves of higher orders. In the case of antisymmetric oscillations, both maxima are due to the energy features of propagating waves of higher orders. The quality of energy resonance in the reflected field depends significantly on the symmetry of the oscillations. The established features of the scattered field make it possible to develop recommendations for controlling the transparency of the boundary in a stepped waveguide.
APPLICATION OF SPECTRAL METHODS OF BOUNDARY INTEGRAL EQUATIONS FOR MODELING OF NANOOPTICAL DEVICES
Authors: Illyashenko Ludmila , Nerukh Alexander
Published: August 2023

Efficiency of modeling of optical nanostructures depends not only on the accuracy of the description of the new physical processes which appear in the new configurations of resonantly scattering and resonantly absorbing structures, but also on the selection of appropriate algorithms for solving the corresponding mathematical problem and numerical parameters of modeling depending on parameters of elements. This is why solving complicated problems of modeling complex resonantly scattering and resonantly absorbing electrodynamic nanostructures involves deep learning of all groups of new unknown effects. In this work a semi-analytical algorithm is developed based on parametrized by conformal mapping techniques spectral method of boundary integral equations with analytical regularization based on singularity subtraction enhanced by Fast Fourier transform, that contrary to the classical schemes, which are based on finite difference and finite element methods, allows to take into account the complex-valued functional dependence of dielectric permittivity of plasmonic materials on the wavelength (even when its value is tabulated) and to solve the problems with static and dynamic singularities in integral equations. Due to sensibility of plasmon resonances to changes in external medium such nanostructures are used in modern medicine, pharmacy and also as chemical and biological sensors. In this work main efforts are directed on generation of algorithm for investigation of dielectric nanostructures with static singularities.
NUMERICAL SIMULATION OF THE FLOW AROUND AN AIRFOIL TYPE TRANSPORT VEHICLE NEAR THE GROUND
Authors: Sokhatsky Anatoly
Published: August 2023

The problem of modeling the flow around an airfoil type transport vehicle near the ground is considered. The flow around the vehicle is turbulent. Nowadays, the most advanced mathematical models of aerodynamics are based on the physical properties of a viscous compressible gas and are based on the Reynolds-averaged Navier – Stokes equations.  Mathematical modeling of turbulent flows remains one of the most challenging problems. Reliable prediction of the characteristics of turbulent flows is an extremely important scientific problem. This is due to the complexity and insufficient study of turbulence as a physical phenomenon. The aim of this work is to build a mathematical model, a numerical method, an algorithm for solving the problem, and to develop software for studying the aerodynamic characteristics of a vehicle of the airfoil type. To close the Reynolds-averaged Navier –Stokes equations, the one-parameter Spalart – Allmaras turbulence model was used. The initial system of differential equations is written in a curved coordinate system. The initial and boundary conditions for the flow parameters are formulated. The methodology, algorithm for solving the problem, and software are developed.  The finite-volume method was used for numerical integration of the system of differential equations. The problem was solved in a multi-block formulation. The developed methodology of algorithms and a set of programs were tested on standard aerodynamic problems: the flow around a transversely placed circular cylinder and a ball. Numerical modeling of the flow of compressed gas around a vehicle moving near the ground was performed. All calculations were carried out for the Reynolds number Re=1,0*10^6 and the Mach number M=0,4. Numerical simulations were performed on a curved multi-block grid. The influence of the ground on the characteristics of the flow around the vehicle was investigated. The studies have shown that the presence of a nearby ground has a significant impact on the flow characteristics around the vehicle. Thus, in order to ensure the required parameters of vehicle dynamics near the ground, it is necessary to take into account the influence of the ground on its aerodynamic characteristics.
A ANALYSIS OF FACTORS INFLUENCING TRANSFER PRICING
Authors: Evi Tiolina
Published: August 2023

The purpose of this study is to analyze the effect of the tax burden, company size and foreign ownership on transfer pricing. The sample technique used in this research is purposive sampling. The samples used were sixteen manufacturing companies. The data used in this study were obtained from the annual financial reports of manufacturing companies for 2016-2018. The analysis technique used in this study was multiple linear regression which was processed using the SPSS version 25 application. . The results of this study found that simultaneously the tax burden, company size and foreign ownership have a significant effect on transfer pricing. Partially, this study shows that (1) tax burden has no significant effect on transfer pricing, (2) company size has a significant effect on transfer pricing, and (3) foreign ownership has no significant effect on transfer pricing.