bluuebunny/crossref_metadata_2025_split huggingface dataset:
Вплив конструктивних параметрів системи впорскування палива common rail на характеристики паливоподачі двигунів RT-Flex
Authors: Polovinka E. , Tabulynsky I. 
Published: September 2024

Компонування систем паливоподачі дизелів полягає, насамперед, у виборі конструктивних параметрів основних функціональних елементів. Розуміння ролі цих факторів необхідне також для ефективної експлуатації систем паливоподачі та двигуна в цілому. Акумуляторні системи паливоподачі сучасних дизелів RT-Flex типу Common Rail досить широко освітлені в технічній літературі, проте питання впливу конструктивних параметрів на характеристики впорскування палива не приділялося уваги. У цьому дослідженні вивчено вплив конструктивних параметрів основного модуля системи ‒ блоку управління впорскуванням БУВ (Injection Control Unit-ICU) – на процес паливоподачі. Сам блок є пристроєм, що забезпечує роботу дозуючого поршня ДП БУВ (QP-Quantity Piston). Його діаметр dп змінювався в діапазоні 40- 120 мм у процесі імітаційного моделювання із застосуванням програми GT-Power. Розглянуто зміну тиску палива в основних елементах БУВ: буферної pб.п і робочої pр.п порожнинах, а також у форсунці pф. При збільшенні dп з 40 до 120 мм pб.п знижується на 3,3 %, а pр.п у тих же умовах зростає з 465 до 706 бар (на 241 бар або 41 %), pф також зростає: з 383 до 564 бар. Швидкість vп руху ДП дуже чутлива до зміни умов ходу останнього. Навіть мало помітні зміни режиму переміщення ДП призводять до стрибко-подібної зміни vп. Циклова подача палива qц, зі зростанням dп збільшилася з 0,0146 кг до 0,0189 кг на 0,0046 кг (27,4 %).
Умовні позначення:
оПКВ – градуси повороту колінчастого валу; РП БУВ –робоча порожнина БУВ;
БП БУВ – буферна порожнина БУВ; xп – координата ДП;
vп – швидкість ДП;
pр. п – тиск у робочій порожнині БУВ; pб.п – тиск у буферній порожнині БУВ;
pф – тиск у форсунці;
dп – діаметр дозуючого поршня; qц – циклова подача палива.
gт– інтенсивність упорскування;
ϕ –кут повороту колінчастого валу.
Level of Cardiovascular Disease Risk and Associated Factors among Clients on Highly Active Antiretroviral Therapy in Vihiga County, Kenya
Authors: Amugitsi Lilian , Mbuthia Grace , Ochanda Damaris 
Published: September 2024

Context: HIV/AIDS is still a public health concern globally, especially in sub-Saharan Africa and Kenya. HIV-positive clients are initiated on highly active antiretroviral therapy (HAART) to reduce the multiplication of HIV and improve their immunity. These clients are at an increased cardiovascular disease risk due to a complex interplay of factors, including traditional cardiovascular risk factors such as smoking cigarettes, obesity due to inactivity, and diabetes.
Aim: This study sought to determine the level of cardiovascular disease (CVD) risk factors among people living with HIV (PLHIV) on highly active antiretroviral therapy (HAART) in Vihiga County, Kenya.
Methods: The study employed a cross-sectional survey design to report baseline survey data for an interventional study on the level of CVD risk factors. The study involved a systematic sample of 211 patients on HAART in six health facilities purposively selected from Vihiga County. Data was collected using the WHO STEPWISE questionnaire from six comprehensive care clinics in Vihiga County from March to July 2022. The World Health Organization-International Society of Hypertension (WHO-ISH) tool AFRI E CHART was used to estimate the cardiovascular risk.
Results: The majority (96.68%) of PLWHIV on HAART in Vihiga county had low overall cardiovascular risk as predicted WHO/ISH score. Age (OR = 1.199, 95% CI [1.031, 1.394], p = 0.018) and smoking status (OR = 0.115, 95% CI [0.024, 0.558], p = 0.007) exhibited a significant association with the level of cardiovascular risk.
Conclusion: The majority of PLHIV have a low estimated CVD risk. There is a need to prioritize weight management in HIV care, integrating healthy lifestyle behaviors and nutritional support while conducting regular cardiovascular risk assessments, focusing on modifiable factors like smoking. Age-specific interventions can also help mitigate the risk across the different age groups.
Predictors of Cervical Cancer Screening Uptake among Healthcare Providers in Siaya County, Kenya
Authors: Imbuye Zilper , Ochanda Damaris , Arudo John 
Published: September 2024

Context: Cervical cancer ranks as the second most frequent cancer among women in Kenya and the second most frequent cancer among women between 15 and 44 years of age. Cases of cervical cancer among health professionals have equally been on the rise.
Aim: This study sought to establish the proportion of healthcare providers who have undergone cervical cancer screening and examine individual and health system predictors that influence cervical cancer screening uptake among healthcare providers.
Methods: The study was conducted in Siaya County hospitals and adopted analytical cross-sectional study design. Quantitative data was collected using a structured self-administered questionnaire from 186 healthcare providers working at six level four hospitals in Siaya County. In addition, key informant interviews were conducted involving the in charge (6 healthcare providers) of the six hospitals selected. SPSS software version 28 was used for statistical analysis of quantitative data at 95% CI; p = 0.05. Multivariate logistic regression analysis was done for all the independent variables with p < 0.02 in the model to determine predictors of uptake of cervical cancer screening. Qualitative data were organized into themes and coded according to the study objectives.
Results: The results show that only 77.4% of the healthcare providers had gone for the screening. There was a significant association (OR: 0.4; 95% CI: 0.2 – 0.8; p = 0.009) between age and uptake of cervical cancer screening. Further results showed that perceived susceptibility (OR: 0.2; 95% CI: 0.1 – 0.6; p = 0.003) and self-efficacy (OR: 0.3; 95% CI: 0.1 – 0.6; p = 0.0008) significantly associated with the uptake of cervical cancer screening services. As for the health system predictors that influence the uptake of cervical cancer screening, availability of transportation (OR: 4.4; 95% CI: 1.5 – 13.2; p = 0.004) and acceptability (OR: 5.0; 95% CI: 1.7 – 15.0; p = 0.001) had a significant association with the uptake of cervical cancer screening services.
Conclusion: Only 77.4% of healthcare providers have been screened for cervical cancer. Perceived susceptibility, self-efficacy, availability of transportation, and acceptability were the main predictors of uptake of cervical cancer screening services. The study recommends routine awareness and sensitization programs about cervical cancer screening among healthcare providers on special days.
Implementasi Learning Management System dalam Meningkatkan Efektivitas Pembelajaran
Authors: Agripina Shafa Armilda 
Published: September 2024

Dalam era digital yang pesat ini, teknologi telah menjadi bagian penting dalam berbagai aspek kehidupan, termasuk di dunia pendidikan. Penelitian ini bertujuan untuk mengumpulkan informasi yang cukup tentang implementasi Learning Management System dalam meningkatkan efektivitas Pembelajaran dengan menggunakan metode penelitian studi literatur guna mengumpulkan beberapa penelitian sebelumnya terkait implementasi learning management system dalam meningkatkan efektivitas pembelajaran. Learning Management System (LMS) adalah sebuah platform digital yang dirancang secara khusus untuk mendukung proses pembelajaran, serta pelacakan dan penilaian kinerja peserta didik dalam suatu institusi atau organisasi (Watson & Watson, 2007). Learning Management System (LMS) merupakan gabungan antara teknologi dan metode pengajaran dalam rangka menciptakan lingkungan belajar yang lebih interaktif, fleksibel, dan efisien.

In this fast-paced digital age, technology has become an essential part of many aspects of life, including in the world of education. This study aims to gather sufficient information about the implementation of the Learning Management System in improving the effectiveness of Learning by using methods of research study of literature in order to compile some previous research related to the application of the learning management system in enhancing the efficiency of learning. Learning Management System (LMS) is a digital platform specifically designed to support learning processes, as well as tracking and evaluating student performance in an institution or organization (Watson & Watson, 2007).
Perceived Parenting Styles, Emotional Intelligence and Conflict Resolution Styles among Young Adults
Authors: Tahir Zoonash , Quratulain Ansa 
Published: September 2024

Purpose: Parenting styles greatly influence the development of emotional intelligence and conflict resolution styles among young adults since the very early years of their lives. The understanding how parenting styles and emotional intelligence impact conflict resolution styles of young adults has become progressively urgent. The existing study purposes to inspect the relationship between perceived parenting styles, emotional intelligence, and conflict resolution styles among young adults. The practical implication of this research will provide the future generations in better upbringing of their children that possess high levels of emotional intelligence.
Methodology: The study was carried out in a single phase. The study was quantitative, and it was conducted to assess the perceived parenting styles by young adults including assessing their emotional intelligence and identifying their conflict resolution style. The sample of the study was 280 (M=140, F=140) recruited from different universities in Islamabad, Pakistan. Three scales were used for assessment: The Perceived Parenting Styles Scale (PPSC), The Schutte Self Report Emotional Intelligence Test (SSEIT) and the Conflict Resolution Styles Inventory (CRSI).
Findings: The authoritative parenting style positively correlated with emotional intelligence (r = .47, p < .01) and positive problem-solving (r = .17, p < .01), while negatively relating to conflict engagement (r = -.31, p < .01) and self-protection (r = -.26, p < .01). In contrast, authoritarian and permissive styles were negatively related to emotional intelligence (r = -.13 and r = -.19, respectively) and positively associated with conflict engagement. Males scored higher on emotional intelligence (M = 121.96, SD = 13.73) than females (M = 118.35, SD = 15.87), and PhD students exhibited higher conflict resolution scores than Master's and undergraduate students. These findings highlight the impact of parenting styles on emotional intelligence and conflict resolution skills among young adults.
Unique Contributions to Theory, Practice and Policy: The study is guided by The Social Learning Theory by Bandura (1977) sets that young adults copy ways of behaving gained from their childhood, particularly from their parents. Parenting styles perceived during childhood and adolescence could impact how people approach conflicts and social interactions. Another theory which backs this study is Emotional Intelligence theory by Daniel Goleman suggests that individuals consist of a bunch of skills and abilities that would help them in recognizing, understanding and managing their own self emotions as well as emotions of other people. The study recommends that research be conducted in other demographic regions or on a broader level. The study also recommends that other variables such as personality traits and changes over tine should be considered as well for better outcomes.
Crises and Stock Market Integration: Evidence from BRICS Countries
Authors: Suri Ritu , Gauba Sucheta , Chandran A Porchelvi 
Published: September 2024

This paper examines the stock market integration in BRICS (a group of Brazil, Russia, India, China and South Africa) countries and explores the effect of two major events; COVID-19 and Russia-Ukraine war on the stock market linkages of these countries. The study is based on weekly observations of BSE SENSEX (India), Bovespa Index (Brazil), MOEX Index (Russia), Shanghai Composite Index (China), and JSE All Share Index (South Africa) collected from Yahoo Finance and Wallstreet Journal from January 2016 to December 2023. We utilize multivariate DCC GARCH (dynamic conditional correlation) model to discern the time varying conditional correlations (TVCCs) between these equity markets. Thereafter, these TVCCs are regressed on the dummy variables to capture the existence of contagion effects among the stock markets of BRICS countries during these major events. The findings of this study indicate the existence of co-movement in the stock markets prices of BRICS countries during the sample period. We find existence of significant contagion effects among the BRICS countries during the COVID period. Results show a significant downfall in the TVCCs between BRICS stock market returns following the beginning of Russia - Ukraine war.
Cigüeñas y grullas: un intento de comprender una etología propia mediante el concepto de la filopatría
Authors: Del Junco González Juan José 
Published: September 2024

Este artículo analiza la investigación artística desarrollada en el proyecto Algunos esfuerzos por entender el concepto de la filopatría (o aquella cualidad según la cual algunos animales volvemos continuamente nuestro lugar de origen). Dicha investigación se efectúa a través de una metodología de producción transdisciplinaria que fusiona la praxis del proyecto artístico y la ornitología de campo. Teniendo en cuenta que la transdicisplinariedad ofrece el máximo gradiente en las metodologías de cruce, los resultados de la investigación se presentan extremadamente contaminados por ambas disciplinas, generando enunciados altamente miscibles que generan una singular dialéctica arte-ciencia con sus consecuentes citas de cooptación. El proyecto, expuesto en una galería madrileña en 2022, pertenece a un conjunto de trabajos que, de manera sistemática, atiende a unas constantes conceptuales y procedimentales tales como la cita a los modelos representacionales de la ciencia que estudia las aves, la vuelta atrás a los códigos y lenguajes de una ornitología pasada, el acercamiento a los enunciados del arte conceptual de finales de los años 60 y comienzo de los 70, la zona de confluencia entre la ornitología y el conceptual ortodoxo mediante el uso de los signos del producto editorial o la puesta en escena del modelo archivo. En el caso específico del proyecto que analizamos, se exponen unos supuestos estudios científicos sobre dos especies de aves —La cigüeña blanca (Ciconia ciconia) y la grulla común (Grus grus)— alegorizando su comportamiento filopátrico en la nidificación y migración para así, en un trastocamiento controlado, expresar aspectos subjetivos del autor en su vuelta continua a varios temas y constantes de trabajo. De esta manera se podría afirmar que éste, al intentar comprender la etología de las aves, atisba un entendimiento de la suya propia.
Tanggung Jawab Yuridis Atas Pengambilalihan Akun Instagram Oleh Pihak Lain Dalam Perspektif Hak Cipta
Authors: Ramadani Ahmad Ilkham , Budiarti Dwi , Humiati Humiati 
Published: September 2024

Akun Instagram termasuk salah satu ciptaan seseorang atas dasar kemampuan berpikir kreativitasnya yang bersifat pribadi, akun Instagram termasuk salah satu program komputer dimana program komputer termasuk karya cipta yang dilindungi sesuai dalam Pasal 40 Ayat (1) Huruf s Undang-Undang Republik Indonesia Nomor 28 Tahun 2014 Tentang Hak Cipta. Meskipun media sosial memberikan platform bagi pengguna untuk berinteraksi dan berbagi konten kepada pengikutnya namun media sosial tidak selamanya menjadi tempat yang aman untuk menyimpan informasi pribadi. Adanya bentuk pengambilalihan akun Instagram melibatkan satu pengguna untuk mengambil kendali, sementara atas akun Instagram pengguna lain dengan mengambil alih konten seperti postingan Instagram cerita, atau kehidupan, dan berinteraksi dengan pengikut akun asli. Tujuan penelitian ini yakni untuk mengetahui bentuk tanggung jawab yuridis terhadap pengambilalihan akun oleh pihak lain dan akibat hukum yang timbul terhadap pengambilalihan akun oleh pihak lain berdasarkan pasal 7 ayat (3) Undang-Undang Republik Indonesia Nomor 28 Tahun 2014 tentang Hak Cipta. Metode penelitian ini menggunakan penelitian yuridis normatif, dengan pendekatan perundang-undangan dan pendekatan kasus. Menurut hasil penelitian, yang diperoleh terkait tanggung jawab yuridis atas pengambilalihan akun instagram oleh pihak lain dalam perspektif hak cipta, terdapat hak eksklusif yang berarti bahwa orang lain tidak dapat menggunakan, menjual, atau mendistribusikan program komputer tersebut tanpa izin dari pemegang hak cipta. Akibat hukum yang ditimbulkan dari pengambilalihan akun Instagram yakni terjadi penipuan, penyebaran berita bohong dan sebagainya, yang intinya pada perbuatan pengambilalihan akun oleh pihak lain itu banyak merugikan bagi pemilik akun Instagram sendiri dan juga pada pengikutnya.
Synthesis and characterization of a novel eight-membered cyclo-1,3,3,5,7,7-hexaphenyl-1,5-dibora-3,7-disiloxane and 4,4ˈ-bipyridine, 1D adduct
Authors: Bull Okpara Sergeant , Don-Lawson Chioma , Nweke-Maraizu Ugo 
Published: September 2024

Simple adducts of cyclo-diboradisiloxanes (Lewis acid) and amines (Lewis base) have been reported in the literature. However, the method for the synthesis of an 8-membered cyclo-diboratetrasiloxane, as well as its adducts, was modified in this report to save cost and achieve new results. In the literature, the synthesis of cyclo-1,3,3,5,7,7-hexaphenyl-1,5-dibora-3,7-disiloxane (Ph6B2Si2O4) (3) has been reported using diphenylsilanediol and phenylboronic acid and a Dean-Stark apparatus for the removal of water. However, in this study, molecular sieves were used for the facile removal of water, and the crude product recrystallized from diethyl ether and petroleum ether (3:1 ratio) to give compound 3. Compound 3 was reacted with 4,4’-bipyridine in a mixture of diethyl ether and petroleum ether solvents at reflux to give a 1D polymer [Ph6B2Si2O4]·L1 (4). Furthermore, compound 4 was characterized with various characterization methods such as single-crystal XRD, nuclear magnetic resonance, and FT-IR spectroscopy. The single crystal X-ray diffraction studies shows that the title compound crystalizes in the triclinic crystal system in the centrosymmetric space group P-1, a = 10.9372(4) Å, b = 18.4221(6) Å, c = 19.4697(6) Å, α = 70.533(3)°, β = 86.476(3)°, γ = 88.517(3)°, V = 3691.6(2) Å3, Z = 2, T = 173.0 K, μ(MoKα) = 0.122 mm-1, Dcalc = 1.204 g/cm3, 21463 reflections measured (5.196° ≤ 2Θ ≤ 56.45°), 14525 unique (Rint = 0.0185, Rsigma = 0.0483) which were used in all calculations, the final R1 was 0.0721 (I > 2σ(I)) and wR2 was 0.2143 (all data) with the 8-membered cyclo-1,3,3,5,7,7-hexaphenyl-1,5-dibora-3,7-disiloxane (Ph6B2Si2O4) (3) configuration.
The Seasonal Variations in Hydrological Factors in the Activity Zones: An Essential Examination of the Ecosystem in Badagry Creek, Lagos, Nigeria
Authors: B. O. Ayo-Dada  , G.A. Lameed  
Published: September 2024

Abstract: The season is a pivotal representative in ascertaining the health status of a coastal ecosystem in a changing climate condition. The physico-chemical parameters of Badagry Creek were spatially and temporally investigated for twelve months (July 2017 to May 2018 for dry and wet seasons). Water samples were collected bi-monthly from nine stations, grouped into five activity zones during the water flow, covering upper, middle and lower courses. Seasonal variations in the physicochemical characteristics of Badgry Creek were found to be significantly different (<0.05) in salinity, phosphate, total suspended solids (TSS), total dissolved solids (TDS), depth, and dissolved oxygen (DO). Data were analysed using descriptive statistics, ANOVA and Spearman correlation at α₀.₀₅.
The wet season had greater values of conductivity (551.27±79.09µS/cm; 412.77±42.7µS/cm) , pH (7.43±0.39: 7.41±0.41), salinity (5.04±1.11ppt: 1.22±0.40ppt), DO (6.72±0.26: 5.39±0.58mg/l), and chloride (Cl̉ˉ, 684.51±82.50 µmol/L: 674.22±73.44 µmol/L) than the dry season respectively. An increase in salinity during the wet season indicates the seawater intrusion and the waste discharge effluents from domestic and aquaculture processes into the stream from the higher course. Significant differences were observed between the Aquaculture (AQ) and Aquaculture combined Dredging (AQ_DG) zone for Sulphate and Chloride (Clˉ).
The Biological Oxygen Demand (BOD) varied significantly between zones; they were 3.12±0.74mg/l in the Aquaculture zone (AQ) to 4.00±0.42 mg/l in the Domestic Waste (DW) zone and 2.10± 0.5 mg/l in the Aquaculture and Dredging (AQ_DG) zone to 19.2±9.44 mg/l in the Domestic Waste (DW) zone, respectively. The Highest value of TOM in DW station indicates anthropogenic effluents from domestic waste in this zone. The seasons were used to describe variations in Badagry Creek's physicochemical parameter values because the wet season noted higher parameter values, which may be related to an influx of water from the upper to the lower course.
Post-process correction improves the accuracy of satellite PM2.5 retrievals
Authors: Porcheddu Andrea , Kolehmainen Ville , Lähivaara Timo , Lipponen Antti 
Published: September 2024

Abstract. Estimates of PM2.5 levels are crucial for monitoring air quality and studying the epidemiological impact of air quality on the population. Currently, the most precise measurements of PM2.5 are obtained from ground stations, resulting in limited spatial coverage. In this study, we consider satellite-based PM2.5 retrieval, which involves conversion of high-resolution satellite retrieval of aerosol optical depth (AOD) into high-resolution PM2.5 retrieval. To improve the accuracy of the AOD-to-PM2.5 conversion, we employ the machine-learning-based post-process correction to correct the AOD-to-PM conversion ratio derived from Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) reanalysis model data. The post-process-correction approach utilizes a fusion and downscaling of satellite observation and retrieval data, MERRA-2 reanalysis data, various high-resolution geographical indicators, meteorological data, and ground station observations for learning a predictor for the approximation error in the AOD-to-PM2.5 conversion ratio. The corrected conversion ratio is then applied to estimate PM2.5 levels given the high-resolution satellite AOD retrieval data derived from Sentinel-3 observations. The region of study is central Europe during the year 2019. Our model produces PM2.5 estimates with a spatial resolution of 100 m at satellite overpass times with R2 = 0.55 and RMSE = 6.2 µg m−3. The corresponding metrics for monthly averages are R2 = 0.72 and RMSE = 3.7 µg m−3. Additionally, we have incorporated an ensemble of neural networks to provide error envelopes for machine-learning-related uncertainty in the PM2.5 estimates. The proposed approach can produce accurate high-resolution PM2.5 data that can be very useful for air quality monitoring, emission regulation, and epidemiological studies.