bluuebunny/crossref_metadata_2025 huggingface dataset:
Control of shock-induced separation using air-jet vortex generators
Authors: Schreyer Anne-Marie
Published: October 2024

Shock-induced separation leads to highly unsteady flow fields and has strong detrimental effects on the aerodynamic behavior and performance of numerous aerospace-engineering applications. To reduce these effects, separation control is required. A very promising approach is the use of rows of air-jet vortex generators (AJVGs), where small spanwise-inclined jets of air injected into the flow increase the momentum transfer within the boundary layer and thus make it less prone to separation. A large number of parameters influence the control effectiveness of AJVGs, amongst them geometrical parameters, such as the orifice shape, orifice size, and injection-pipe length; flow parameters, including the (steady or forced) injection pressure; and the array arrangement. The talk will provide an overview on the relevant control parameters and their respective influences, also comparing AJVGs with classical mechanical vortex generators. Recent experimental and numerical studies at RWTH Aachen University provide a rich experimental-numerical data set, which we have jointly analyzed and interpreted using statistical methods and modal analysis with dynamic-mode decomposition, amongst other techniques.

On the basis of these results, the physical mechanisms and underlying flow dynamics governing the control effect of AJVGs, as well as the observed flow phenomena and control effects, will be presented and discussed.
Keep the physics in the model if you can: Data assimilation in Fluid Mechanics
Authors: Juniper Matthew
Published: October 2024

"This talk will show one way to combine physics-based modelling with data-driven machine learning. The method assimilates data into physics-based models using Bayesian inference accelerated with adjoint methods. It quantifies the uncertainties in the model parameters and the uncertainties in the model predictions. 

If the physics of the problem is known, this method is usually better than assimilating data into a Neural Network. This is because the physics-based model requires less training data, is interpretable, and extrapolates to situations that share the same physics. This framework also rigorously compares candidate physics-based models against each other, allowing the best model to be selected. 

This work is inspired by David MacKay's book on information theory, inference, and learning algorithms (https://www.inference.org.uk/itprnn/book.pdf). I will present applications in Magnetic Resonance Imaging of flows (flow-MRI) and thermoacoustic oscillations in rockets and aicraft engines. An overview of the talk can be found at https://mpj1001.user.srcf.net/MJ_inference.html."
The effect of buoyancy on pollution trapping in the wake of a step
Authors: Wykes Megan Davies
Published: October 2024

When wind blows over a row of houses, what happens to pollution emitted by vehicles driving in the building wakes? This talk will describe reduced-scale laboratory experiments that investigate a simplified version of this common urban fluid mechanics problem. The experiments focus on the effect of buoyancy on pollution dispersion in the wake of a step. The results are compared to a simple model that describes the competing effects of inertia and buoyancy forces in the wake and how these affect pollution trapping behind the step.
Peculiarities of creative activity of а teacher
Authors:   Lipetsk State Technical University, Kantaryuk Ekaterina A. , Bordyugova Yulia A. ,   Lipetsk State Technical University
Published: October 2024

This work is devoted to the peculiarities of creative activity in the work of a teacher. Theoretical information on the research topic is presented, forms of creativity are identified, on the basis of which an analysis is carried out and the main factors influencing the development of creative abilities in a child are identified.
Artificial intelligence and business models in the fourth industrial revolution
Authors: Onyeka Chrisanctus Ofodile  , Adeoluwa Omoyemi Yekeen  , Ngodoo Joy Sam-Bulya  , Chikezie PaulMikki Ewim
Published: October 2024

The Fourth Industrial Revolution (4IR) represents a paradigm shift in technology, marked by the convergence of advanced technologies such as Artificial Intelligence (AI), the Internet of Things (IoT), and big data analytics. This revolution transforms traditional business models, fostering innovation and enhancing operational efficiency. AI plays a pivotal role in 4IR, enabling businesses to leverage data-driven insights for strategic decision-making. By automating processes and personalizing customer experiences, AI enhances productivity and competitiveness. This paper explores the impact of AI on business models within the context of 4IR. We analyze how AI-driven technologies reshape value creation, delivery, and capture mechanisms. The integration of AI into business models facilitates the transition from product-centric to service-oriented approaches, enabling companies to offer tailored solutions that meet evolving consumer demands. Furthermore, AI enhances predictive capabilities, allowing businesses to anticipate market trends and customer preferences, thereby driving innovation. The research identifies key sectors where AI is significantly influencing business models, including manufacturing, healthcare, and retail. In manufacturing, AI optimizes supply chain management and production processes, leading to reduced costs and improved product quality. In healthcare, AI supports diagnostics and personalized treatment plans, enhancing patient outcomes and operational efficiencies. In retail, AI-driven analytics enable businesses to refine marketing strategies and improve customer engagement. Despite the opportunities presented by AI, the paper also addresses the challenges and ethical considerations associated with its implementation. Issues such as data privacy, algorithmic bias, and the need for regulatory frameworks are crucial for ensuring responsible AI deployment.In conclusion, this paper highlights the transformative potential of AI in shaping business models in the 4IR. By embracing AI technologies, organizations can innovate and adapt to the rapidly changing business landscape, ultimately driving sustainable growth and competitive advantage.
建築物無障礙電梯點字錯誤樣態之解析
Authors: 曾亮 曾亮
Published: October 2024

本文主要在調查國內建築物無障礙電梯點字貼片，設置於機廂內、外操作按鍵外左側之『現場樣態』，並依據內政部2019.1.4台內營字第1070820550號令修正，『昇降設備點字』中，本文所建構之『標準樣態』模式：樓層篇、上下篇、開關篇、警示篇。再進行『錯誤樣態分析』包括（字義／內容）、設置位置、材質等錯誤現象，最後提出『改正樣態』解決對策；以利於供視障者摸讀操作及辨認之正確性，並提出點字規範之研修法規之參考。本文針對無障礙電梯點字貼片，『錯誤態樣分析』之結果，以『樓層篇』按鍵而言：一、『B4～B1』按鍵點字：（一）B大寫被標註b小寫，（二）按鍵外右側／貼片順轉90。等錯誤。二、『1～9』樓層按鍵之點字：（一）樓層數字按鈕與點字有異，（二）貼片逆轉180。等錯誤。三、點字貼片-錯誤因子比率：最高値在『警示篇－字義、內容』有38％。研修法規之參考方面而言：提出我國無障礙電梯點字。增設『延（ㄧㄢˊ）』：功能定位『長照機構』、『醫院』等場所，銀髮長者或行動能力、摸讀行較慢，病床移動等，較長時間開啓者用途佳。This article is mainly investigating the Braille stickers of barrier-free elevators in domestic buildings, setting up the '' Field Pattern '' on the left side of the buttons inside and outside the cabin, and amending it in accordance with the order of the Ministry of the Interior 2019.1.4 Taiwan Neiying No. 1070820550, ''Elevation In Braille for Equipment, the '' Standard Pattern '' mode constructed in this article: Floor, Upper and Lower, Switch, and Warning. Then carry out '' Error Pattern Analysis '' including (word meaning/content), setting location, material and other errors, and finally propose '' Correction Pattern '' solutions; to facilitate the correctness of the visually impaired people's operation and identification, and propose Reference to the training regulations of the Braille standard. This article is aimed at the elevator Braille patch, the result of the '' Error Pattern Analysis '': in terms of the ''Floor '': (1) ''B4~B1'' Braille Signage: (1) The uppercase of B is marked with lowercase b, (2) The right side of the button/pattern rotates 90° the error. (2) Braille Signage on the ''1~9'' floors: (1) The floor number buttons are different from the Braille, (2) The patch is reversed 180° the error. (3) Braille patch-error factor ratio: the highest value is 38% in ''Warning Chapter - Word Meaning and Content''. Reference party for training regulations: Propose addition Braille for barrier-free elevators in my country. Add ''Extended (ㄧㄢˊ)'': functional positioning ''long-term care institutions'', ''hospitals''.
以室內裝修構造探討樓板衝擊音隔音改善之研究
Authors: 馮俊豪 馮俊豪 , Chun-Hao Feng 沈志哲 , 林芳銘 林芳銘
Published: October 2024

我國建築法規防音條文並未規定既有住宅分戶樓板之隔音構造及基準，若產生樓板衝擊音之問題，除協調上層住戶以樓板表面材作為衝擊音改善對策外，僅能以自有權屬空間進行隔音設計，或藉由室內裝修設計方式獲得較佳之居住音環境品質。因此，本研究選定國內鋼筋混凝土造住宅，進行室內天花板搭配牆體裝修施工，參照CNS15160-7量測標準進行樓板衝擊音隔音現場量測，並依CNS8465-2進行量測結果之單一數值評定，瞭解衝擊音頻率特性與裝修構造之隔音性能。研究結果顯示，室內天花板及牆體裝修構造後，空間衝擊聲壓位準在頻率100～1000Hz之數值隨迴響時間下降而減少，有利於衝擊音之改善。而受測空間經天花板裝修後，可阻隔約7～8分貝之樓板衝擊音隔音，若增加牆體裝修構造，衝擊音隔音可提升至13～15分貝，降低衝擊源能量透過樓板或側牆等結構傳音，有效解決既有住宅衝擊音干擾之問題。In this research, we discussed the methods to improve the impact sound insulation of floor slabs of the existing residents. The reinforced concrete house was our object, we decorated the ceiling and wall in our object and followed the standard of CNS 15160-7 to measure the field of floor impact sound and then calculated the single number by CNS 8465- 2. In this study, we understood the frequency property of impact sound and the insulation performance of decorating structures. The result shows decorating the ceiling and wall was to affect the values of the reverberation time of receiving room and reduced the impact sound pressure level of 100~1000 Hz. It had the performance that floor impact sound was deceased 7~8 dB by decorating the ceiling. To add the wall structure design that could provide 13~15 dB in the insulation performance of floor impact sound. In this study we found that decorating ceilings and walls could solve the problem of floor impact noise in existing residences and improve the transmission of the impact source energy with the building floor or structure.
不同落地距離對著地錯誤動作評分測驗之影響-以大專棒球運動員為樣本
Authors: 鄭睿誠 鄭睿誠 , 陳宗榮 陳宗榮
Published: October 2024

目的：本研究目的為比較不同落地距離對著地錯誤動作評分測驗分數之影響。方法：本研究以 16 名大專棒球男性運動員為受試者 (年齡：19.37 ± 0.88 歲、身高：175.67 ± 6.14 公分、體重：70.51 ± 8.67 公斤、球齡：7.96 ± 2.46 年)。所有受試者重複量測進行 40 % 身高落地距離、50 % 身高落地距離、60 % 身高落地距離的著地錯誤動作評分測驗 (landing error scoring system, LESS) 測驗。結果：結果發現 40 % 身高落地距離 (5.47 ± 1.3)、50 % 身高落地距離 (5.38 ± 0.97)、60 % 身高落地距離 (5.37 ±1.1) 在 LESS 分數上皆沒有顯著差異 (p <.05)。結論：本研究結論為大專棒球男性運動員進行 LESS 測試時，使用 40 % 身高落地距離、50 % 身高落地距離、60 % 身高落地距離獲得的 LESS 分數和風險分類皆會相似。建議未來教練在測試 LESS 時，可以設置 40 % ~ 60 % 的落地距離，減少測試過程的困難度。

 

Purpose: This study aimed to examine the effects of different landing distances on the landing-error scoring system (LESS). Methods: We enrolled 16 college-going baseball players as participants (age: 19.37 ± 0.88 years, body height: 175.67 ± 6.14 cm, body weight: 70.51 ± 8.67 kg, player’s baseball age: 7.96 ± 2.46 years). All participants performed maneuvers with landing distances of 40 %, 50 %, and 60% of an individual’s body height. Results: There was no significant difference in the group’s mean LESS scores under all the tested conditions (p <.05). Conclusion: The group’s mean LESS scores was similar when college-going baseball player performed maneuvers with landing distances of 40 %, 50 %, and 60 % of an individual’s body height. For testing the LESS, we recommended that the coach set a landing distance of 40 % ~ 60 % to reduce the difficulty of the test process.

 
The costs of open access publication
Authors: Borrego Ángel , Anglada Lluís
Published: October 2024

This article explores the financial dynamics of open access (OA) publication in Catalan universities by combining four data sources: publication data coupled with article processing charge (APC) estimates; information on journal subscriptions, transformative agreements and APC payments made by universities; acknowledgements of APC funding sources in OA scholarly outputs; and a survey of authors. The findings reveal a consistent increase in OA publication across Catalan universities, with 60% of the articles indexed in the Web of Science being published in either gold or hybrid OA in 2022. In parallel, investment in the research publishing system shows an upward trend. Resources allocated to journal subscription licenses have been redirected towards transformative agreements, leading to a rise in hybrid OA publications. Additional budget allocations have been made to accommodate APCs for gold OA journals. Authors employ varied funding sources for gold and hybrid OA, with university funding programmes and research grants commonly facilitating gold OA, while transformative agreements often support hybrid OA. Authors associated with Catalan universities frequently benefit from funding schemes and transformative agreements that are accessible to their coauthors. However, survey responses underscore the multifaceted nature of researchers’ financial support, including personal assets and waivers. Authors express frustration with the evolving OA landscape, particularly concerning the exorbitant publication fees. Nevertheless, the allure of high-impact journals and expedited peer review processes continues to incentivize authors towards gold OA. Researchers voice concerns regarding the lack of equitable funding programmes and potential conflicts of interest within gold OA models, which signals the risk of compromising peer review integrity to prioritize profits. This study underscores the need for further research to deepen our understanding of scholarly publishing expenditure and inform strategies for fostering a sustainable, equitable OA ecosystem.
Alternativa metodológica para el fortalecimiento de la convivencia escolar
Authors: Urbay Rodríguez Marilin , Pérez Ramírez Cecilia
Published: October 2024

La investigación soluciona un problema científico de gran importancia para el contexto escolar. Se concibe la convivencia escolar como el proceso de interrelación entre los agentes de una institución educativa dentro de un ambiente democrático, de respeto tolerancia e inclusividad que permita convivir y resolver de manera pacífica los conflictos por la vía del diálogo y la negociación de manera asertiva, es una categoría compleja, vinculada con la alta autoestima, que puede aprenderse como parte de un proceso amplio de desarrollo emocional. La Alternativa metodológica se distingue por concebir al diagnóstico como punto de partida para la transformación de la práctica desde lo personal cognitivo, actitudinal y los valores morales, sustentada en el desarrollo de la convivencia desde una visión de cambios en la conducta, con el objetivo de ofrecer a los maestros/tutores una herramienta pedagógica orientadora en relación a la enseñanza y el aprendizaje de la convivencia. Se utilizan métodos del nivel teórico, empíricos y del nivel estadístico matemático que permitieron constatar la magnitud del problema y justificar la factibilidad de la solución al mismo. Se realizan recomendaciones que permitan sistematizarlos a través de intervención en la práctica por la vía experimental.
Simultaneous management of acetabular and ipsilateral subtrochanteric femur fractures in a polytrauma patient: A case report
Authors: Sah Saurabh , Dwidmuthe Samir , Mohabey Ankush , Roy Mainak
Published: October 2024

Simultaneous fractures of the acetabular and subtrochanteric femur are relatively uncommon and present a complex clinical challenge. These fractures are often the result of high-energy trauma, such as automobile accidents or falls from a height. Managing both fractures simultaneously is challenging and requires a comprehensive surgical plan to optimize patient outcomes. We highlight the successful management of simultaneous acetabular and subtrochanteric femur fractures through a single surgical approach in a single sitting.
A produção de material didático para a educação a distância à luz de princípios dialógicos: uma revisão sistemática
Authors: Santos Erivaldo da Silva , Araujo Allyson Carvalho de
Published: October 2024

Por meio da revisão sistemática da literatura, o estudo busca identificar práticas de produção de material didático para a Educação a Distância (EaD) que observem princípios dialógicos. Foram consultadas 10 bases de dados e identificados 389 textos, dos quais, 15 foram selecionados para nossa análise. Os resultados mostram que menos de 50% da amostra explora explicitamente os princípios dialógicos, o que demanda investimento no campo.
Integrating psychological interventions into holistic management of chronic respiratory diseases
Authors: Sundar Devi
Published: October 2024

Chronic Respiratory Diseases (CRD), such as asthma, interstitial lung disease, and chronic obstructive pulmonary disease (COPD), have a significant negative influence on a patient's physical and mental health. Stress, anxiety, and depression are common psychological injuries that worsen lung function, and increase mortality, exacerbations, and healthcare utilization in patients with chronic respiratory disease (CRD). Pulmonary rehabilitation is a gold standard non-pharmacological management for CRD—where care delivery strategies are based on a bio-psycho-social model of integrated therapies. However, there are still issues since there are global differences in the way programs are designed and implemented, and there are no standardized psychological assessments or therapies available for patients with CRD. This review critically examines the challenges in standardizing pulmonary rehabilitation programs and the lack of health psychological assessment or interventions for patients with CRD.  Additionally, it suggests necessary updates to respiratory physiotherapy curricula with the neuroscience of breathing in clarifying the relationship between psychological factors and inflammation in CRD. The review calls for an urgent need for increased global research funding to enhance psychological therapies as integrated respiratory care management and improve outcomes for patients with CRD.
Patient out-of-pocket expenditure in primary care comparing high income, middle income and low-income countries
Authors: Alrashed Anwar , Mohamed Hany Ramadan
Published: October 2024

Background: Out-of-pocket health expenditures (OOPHE) in primary care can pose a significant financial burden on individuals and households, particularly in low- and middle-income countries. Understanding the factors influencing OOPHE is crucial for developing effective policies to improve healthcare access and affordability. Objective: This systematic review aimed to identify and analyze the factors influencing OOPHE in primary care settings across high-, middle-, and low-income countries. Methods: A comprehensive search of electronic databases was conducted to identify relevant studies. Included studies were assessed for quality and data were extracted to identify key factors influencing OOPHE. Results: Demographic characteristics, socioeconomic factors, healthcare utilization, system factors, and cultural factors were all found to influence OOPHE. Lower income levels, limited insurance coverage, frequent healthcare utilization, and higher disease severity were consistently associated with higher OOP costs. Conclusion: The findings highlight the significant burden of OOP expenditures on individuals and households. Policymakers should prioritize strategies to expand health insurance coverage, improve access to primary care services, negotiate lower prices for healthcare goods, and address underlying socioeconomic factors. Further research is needed to explore the impact of specific interventions and the role of cultural factors in shaping OOP expenditures.
Summary: EdTech for Learners With Hearing and Visual Impairments - A Rapid Evidence Review for the Southeast Asian Region
Authors: Zhao Annette , Hinks Jessica , Thang Sarah , Mitchell Joel , Rabi Asma , Ullah Noor , Zazai Rozina , Emerusenge Aime Parfait , Barnes Katrina , D’Rozario Jonny
Published: October 2024

An output of the EdTech Hub, https://edtechhub.org/
Dynamic analysis of porous functionally graded plates
Authors: Amar Mohammed Benali , Rebai Billel , Meradjah Mustapha , Hadji Malek
Published: October 2024

This study investigates the natural frequency behavior of porous functionally graded (FG) plates using a novel shape function to model material gradation and porosity. The research employs higher-order shear deformation theory (HSDT) to account for material property variations across the thickness of the plate, modeled using power-law distributions. A porosity model is introduced to evaluate the effects of voids and porosity distribution on the mechanical properties of the FG plates. The analytical solutions for simply supported porous functionally graded (FG) plates are derived using the Navier solution method, which simplifies the complex boundary conditions and provides accurate results. Several key parameters, including the power-law index, side-to-thickness ratio, aspect ratio, and porosity level, are studied to understand their impact on the natural frequency of FG plates. The findings demonstrate that the innovative shape function captures the vibrational characteristics of porous functionally graded ( FG) plates with high accuracy. This comprehensive analysis offers valuable insights for engineers and designers, providing guidance on optimizing FG plate structures for various engineering applications. By understanding the role of material gradation, porosity, and geometric factors, this work contributes to the design of advanced FG materials, which are critical in industries where vibrational performance and structural integrity are essential.
Synergistic effects of natural pozzolan as cementitious materials and aggregate on self-compacting mortar properties
Authors: Ouldkhaoua Younes , Herihiri Ouided , Ghazali Belgacem Mohamed El , Benabed Benchaa , Uysal Mücteba
Published: October 2024

This study explores the impact of natural pozzolan (PZ) on the rheological and mechanical properties of self-compacting mortars (SCM), with particular attention to its dual role as a cement and sand substitute. The research assesses the performance of SCM when PZ is used as a 10% replacement for cement (PZC) and when PZ is substituted for sand at levels of 10%, 20%, and 30% (PZS). Findings reveal that incorporating PZ adversely affects the rheological properties, necessitating higher dosages of superplasticizer (SP) to achieve desired flow characteristics. However, despite these challenges, formulations containing PZC show significant improvements in mechanical strength and a reduction in void content. These results highlight the potential of natural pozzolan to enhance the mechanical performance of SCM, making it a viable option for optimizing mortar mixtures, though careful consideration of its impact on workability is required. This study offers valuable insights into optimizing SCM mixtures with natural pozzolan to balance rheological behavior and mechanical for sustainable SCM design.
A novel hybrid GA optimized PID controller for AGC in interconnected hydro-thermal power system
Authors: Kail Soumia , Bekri Abdelkader , Nasri Abdelfatah
Published: October 2024

Wind power integration causes imbalances when actual output deviates from its forecast due to wind velocity variations, affecting the scheduling of conventional generators. Additionally, wind farms' effect on the power system's dynamic behavior may cause a different system frequency response to disturbances. Automatic Generation Control (AGC) must be robust against unknown external disturbances to keep the frequency constant, especially in the presence of renewable energy like wind power. In this paper, a Hybrid Genetic Algorithm (HGA) is proposed to reduce the frequency deviations and improve the dynamic performance of the power system in the presence of wind power. This new optimization technique based on the minimization of the Integral of Squared Errors (ISE) is applied to determine the optimal settings for the proportional-integral-derivative (PID) controller gains. HGA has been offered better and faster performance over the PID controller and Genetic Algorithm (GA). The simulation results confirm the Doubly Fed Induction Generator (DFIG) participation in the frequency system.
Influence of operating parameters on the fatigue life of materials: a combined experimental and statistical study
Authors: Djalab Abdelhakim , Kezzar Mohamed , Zemmit Abderrahim , Ouagueni Fayssal , Sari Mohamed rafik , Rouabhi Riyadh
Published: October 2024

Today, material fatigue is a crucial area of modern engineering because it has a major impact on the durability and reliability of mechanical components in many industrial systems. The understanding of fatigue mechanisms and their behaviour under different operating conditions is essential for the design of robust and durable systems. This experimental study focuses on the fatigue behaviour resulting from rotational bending of nationally produced materials. The main elements are the determination of the fatigue limit for a given fatigue cycle and the endurance limit. To characterise the fatigue resistance of the material by testing a group of identical specimens subjected to cycles of a given shape. To study the effect of three operational variables, namely hardness (H), surface roughness (Ra) and applied stress (σ), on the response under investigation, i.e. the life of the specimen (number of cycles), experiments were carried out using a Taguchi L18 mixed experimental set. Finally, the results obtained were statistically analysed using analysis of variance (ANOVA) and response surface methodology (RSM). From the experimental results and the analyses carried out, the results show that the applied stress is the statistically most dominant factor on specimen fatigue (life) with a contribution of 38.53%, followed by the stiffness factor with a contribution of 32.81%. Finally, based on the Taguchi method and the Response Surface Model (RSM) developed, it is judged that the higher value obtained for the coefficient of determination (over 80%) clearly shows the strong correlation between predicted and experimental data.
Nonparametric estimation of P(X<Y) using local linear methods for weakly dependent data
Authors: Chahad Abdelkader , Bassoudi Mohammed
Published: October 2024

This study addresses the problem of accurately estimating P(X<Y), particularly in the presence of weakly dependent data. Traditional nonparametric methods often assume independence between observations, which can lead to biased results in dependent settings. To overcome this limitation, we propose the use of local linear methods for the nonparametric estimation of P(X<Y), focusing on weakly dependent data modeled using an autoregressive (AR(1)) process. The primary objective is to assess the performance of the local linear estimator under both independent and weakly dependent conditions, comparing bias, variance, and mean squared error (MSE). A Monte Carlo simulation with 1000 repetitions was conducted, utilizing large sample sizes to ensure robust asymptotic properties. Results show that while the estimator performs well for independent data, with low bias and variance, its accuracy decreases significantly in the presence of weak dependence, leading to increased prejudice and MSE. These findings highlight the need for adjustments in nonparametric methods when dealing with dependent data. In conclusion, while effective for independent cases, the local linear method demonstrates limitations when applied to weakly dependent data, emphasizing the importance of considering dependence structures in future nonparametric estimations.
Enhanced energy management strategy for hybrid fuel cell – supercapacitor – battery tramway using cascade Fuzzy – Pi controller
Authors: Faical Briber , Daoud Rezzak , Nasserdine Boujerda
Published: October 2024

This paper introduces an advanced energy management strategy for a hybrid tramway system powered by a fuel cell, supercapacitor, and battery, employing a Cascade Fuzzy-Proportional Integral (CFPI) controller. The strategy is designed to enhance the efficiency and longevity of the hybrid power system. A primary goal is to mitigate sudden changes in the fuel cell current, which helps prolong its lifecycle and improve system reliability. Additionally, the CFPI controller maintains the DC bus voltage at its reference level, ensuring consistent and stable power delivery during both steady state and transient operating conditions. The proposed energy management strategy also enhances the robustness of the control over the hybrid power sources, allowing for optimal power distribution. The Turkish driving cycle of the LF-LRV tramway was used as the reference cycle for evaluating the control performance. Simulation results demonstrate that this strategy not only effectively manages the power flow between the fuel cell, supercapacitor, and battery, but also improves the battery’s state of charge (SOC). This contributes to a more efficient and sustainable tramway system. Ultimately, the proposed CFPI-controlled strategy optimizes the performance and durability of hybrid sources, making it a promising approach for modern urban transport applications.
Investigation on the technical properties of sulfate resistant cement, a potential alternative to Portland cement for aggressive environments
Authors: Merabet Hemza , Boutefnouchet Hafida , Benouis Bornia , Tobbi Ouafa , Roumane Amina , Hattab Zhour , Azzeddine Charef
Published: October 2024

Sulfate Resistant Cement (SRC) is an alternative material to Portland cement designed to improve the performance of concrete in areas where sulfate attack may be expected. The sulfate resistance of Portland cement depends on its tricalcium aluminate (C3A) content. The latter must be at least less than 5% to avoid the formation of ‘secondary’ ettringite, an expansive product obtained by the reaction of aluminates with sulfates. This work, carried out at the SIGUS-Oum El Bouaghi cement plant, contributed to a study of the chemical characteristics and physical-mechanical properties of a sulfate-resistant cement destined for aggressive environments. The methodology adopted was based on a comparative study of two types of cement, CEM II /A - L 42.5 N and CEM I 42.5 N-SR5. Both cements' production lines and monitoring tests were performed in accordance with current standards. The results of the chemical analyses show a difference in the proportions of oxides in the composition of the raw meal, and in the mineralogical composition of the clinkers of each type of cement. The behaviour of the two cements studied in normal and aggressive environments was also investigated.
The Implications of On-Job Training on the Performance of Faith Based Organizations: Focus on Divine Holistic Ministries, Uganda
Authors: Kiwanuka Fred
Published: October 2024

a. b. c. d. e. Faith-Based Organizations with the support of their funders connect with local communities to deliver services in the identified areas regardless of their faith seeking to improve the wellbeing of the masses. Henceforth, to add to the growing scholarly debate in this dominion, this research was set out. That is, it was set out to examining the implications of on-job training on the performance of Faith-Based Organizations (FBO), with reference to Divine Holistic Ministries- Uganda. Using a correlational research design, this study sampled 63 participants comprised of Directors, Human Resource personal, Staff of Divine Holistic Ministries, and few beneficiaries of Divine Holistic Ministries. Data was collected using structure questionnaires and analyzed quantitatively. Various analysis and test including correlation and regression were conducted. Henceforth, the findings revealed that there is positive significant relationship between job rotation and the performance of Divine Holistic Ministries-Uganda (r= .686**, p=0.001). This implies that in job rotation, employees are equipped with more technical skills to accomplish their assignment, gives workers a break from strenuous work best, eliminates boredom, increase conceptual skills, builds confidence and team work among staff. It also revealed that there is positive significant relationship between upgrading and performance of Divine Holistic Ministries-Uganda (r= .342**, p=0.001). This implies that in that situation, employees get equipped with technical skills and knowledge at work, acquire more managerial skills, enhance their leadership skills, become more creative and confident at work, as well as gain more evangelical skills. The study finally revealed that there is a positive significant relationship between refresher courses and the performance of Divine Holistic Ministries-Uganda (r=0.589**, p=0.002). This implies that in refresher courses, employees achieve regular compliance to organization goals and objectives, help staff to keep up-to-date, identify training needs and skills gaps, as well as acquire managerial and leader skills. Basing on the above findings, it is concluded that there is positive significant relationship between on-job training and the performance of Faith-Based Organizations (FBO). The study recommended that job rotation should be improved in the FBOs, and this can be achieved through having a clear goal and time frame, preparing and training workers before rotation, creating plan and aligning job rotation with workers’ career paths; and areas of further research were suggested.
Formação humana integral no contexto da EJA/EPT: reflexões a partir da perspectiva freiriana
Authors: Lima Antônio Carlos Santos de , Silva Ana Quitéria Menezes de Oliveira , Correia Aurineide Profírio Barros , Correia Alexandre Henrique Barros , Santos José Antônio de Oliveira dos , Beirouti Mayara Romeiro Lins , Silva Renata Alves da , Barbosa Tiago Jorge de Araújo
Published: October 2024

Este artigo tem como objetivo refletir sobre a formação humana integral no contexto da Educação de Jovens e Adultos (EJA) integrada à Educação Profissional e Tecnológica (EPT), a partir de uma perspectiva freiriana. Com base em uma pesquisa de natureza qualitativa do tipo bibliográfica buscamos refletir como o ideal de educação freiriano relaciona-se com a natureza da EPT no contexto da EJA. Ancorado nos estudos de Paulo Freire, que defende uma educação dialógica e emancipatória, e em estudos de autores que discutem a EPT, que enfatizam a necessidade de a formação superar a abordagem tecnicista da educação, promovendo a construção de sujeitos críticos e autônomos, conclui-se que a  formação humana integral, compreendida como um processo que abrange as dimensões cognitivas, éticas e sociais dos educandos, é apresentada como essencial para garantir que a EJA/EPT vá além da formação técnica, proporcionando uma educação que possibilite uma participação ativa e consciente na transformação social.
Desenvolvimento de genótipos de sorgo em condições de alagamento
Authors: Sousa Euzy Westerleya Rocha , Carvalho Victor Manoel Alves , Nascimento Letícya Sá , Alves Anatercia Ferreira , Diniz Potiára Oliveira , Queiroz Cleonilde da Conceição Silva , Viana Jonathan dos Santos , Sousa Patricia Ferreira Cunha
Published: October 2024

O sorgo apresenta grande importância na alimentação animal no Brasil. No Maranhão seu cultivo demonstra crescimento, sendo implantado como segunda safra, após a colheita da soja, uma alternativa ao substituir o milho nas rações. O estresse hídrico é um fator abiótico limitante para o desenvolvimento vegetativo das culturas. O objetivou-se identificar genótipos de sorgo tolerantes a diferentes condições de alagamento em desenvolvimento inicial. O experimento foi realizado em DIC, composto de quatro genótipos de sorgo e quatro tratamentos de alagamento e três repetições. A semeadura inicial foi realizada com as sementes submersas em copos plásticos. Sendo as sementes submersas por 24 horas, 48 horas e 72 horas, e o controle (durante 72 horas). Após esse período as sementes foram transferidas para a casa de vegetação. Foram analisados os parâmetros, após 45 dias: medição do comprimento da parte aérea e raízes, diâmetro do caule, número de folhas e determinação do peso da massa fresca e massa seca. Os resultados foram submetidos à análise de variância e as médias foram comparadas através do teste de Tukey a 5% de significância. O período de sementes de sorgo submersas por 24 horas e controle no desenvolvimento inicial foi mais eficiente. O tratamento por 48 horas tem a menor média para as características. Os genótipos XS9343 e EA955 são mais tolerantes as condições de alagamento, seguidas pelos genótipos 84G05 e 50A60.
proposta de um modelo de gerenciamento dos resíduos orgânicos gerados na Ceasa (MA): aplicação da economia circular
Authors: Silva Raquel Costa da , Cruz Glauber , Silva Lorena Silva e , Gomes Wolia Costa
Published: October 2024

A implementação de um modelo gerencial, o qual seja ambientalmente sustentável e economicamente viável a partir dos resíduos orgânicos gerados pela CEASA, e propor uma metodologia eficaz a fim de reaproveitar tais resíduos pautados no conceito da Economia Circular. O método utilizado é hipotético-dedutivo que é definido como um método que busca uma solução, através de tentativas e eliminação de erros. A pesquisa foi realizada no período de junho a dezembro de 2019, foram analisadas as perdas ou desperdícios de gêneros alimentícios na Cooperativa de Hortifrutigranjeiros do Maranhão - CEASA, a fim de avaliar a importância da implantação dos conceitos da economia circular. a necessidade de avaliar a importância da implantação dos conceitos da Economia Circular na Central de Abastecimento Hortifrutigranjeiro – CEASA – MA. A partir da quantidade de resíduos gerados, podemos avaliar que se faz necessário a implantação de um sistema de biodigestor afim de utilizar os resíduos como fonte de energia renovável. Analisou-se o atual modelo de gestão de resíduos e apesar do modelo utilizado estar cumprindo a hierarquia de alimentos ainda é visto a grande quantidade de resíduos desperdiçados. Conclui-se que a partir do tratamento dos resíduos orgânicos gerados é possível ter uma efetiva produção de biogás através da utilização da biomassa, trazendo benefícios para o meio ambiente e também ganhos econômicos. Sobre a pesquisa teve a efetiva capacidade de produção de biogás, justificando os argumentos que se faz necessário a utilização do reaproveitamento dos resíduos orgânicos como substrato para geração de biogás como fonte de energia renovável.
Prospecção de actinobactérias oriundas da areia de praia em São Luís – MA
Authors: Araújo Emanuelle Ketthlen Nunes , Ribeiro Elian Chaves , Jesus Ronald da Silva de , Silva Verônica Duarte da , Teixeira Raul da Cruz , Pinheiro Rosa Amélia Mendonça Sátiro , Pereira João Guilherme Santos , Miranda Rita de Cássia Mendonça de
Published: October 2024

As Actinobactérias produzem metabólitos secundários com diversas bioatividades, como a antimicrobiana, que podem ser úteis contra cepas bacterianas resistentes. Visando a busca por compostos bioativos com propriedades de ação antibacteriana, objetiva-se com este estudo isolar e identificar micromorfológicamente actinobactérias presentes no sedimento de praia, com o intuito de avaliar atividade antagônica capaz de inibir o crescimento de patógenos multirresistentes. Para isso, duas cepas de actinobactérias (Streptomyces spp., e Streptosporagium spp.) denominadas PC2 e PC3, foram isoladas através da técnica de diluições seriadas e identificadas a nível de gênero pela técnica de microcultivo. Induziu-se atividade antagônica por meio do ensaio em meio sólido com intuito de produzir metabólitos secundários na tentativa de inibir e formar halos testando-se atividade antimicrobiana contra Candida albicans ATCC 14033, Klebsiella pneumoneae, Pseudomonas aeruginosa ATCC  7853 e Staphylococcus aureus ATCC  25923. Observou-se atividade antimicrobiana da cepa PC2 contra Klebsiella pneumoneae com formação de halo e inibição de 30 mm, e PC3 contra Pseudomonas aeruginosa ATCC  7853 com formação de halo e inibição de 15mm. Para as cepas Candida albicans e Staphylococcus aureus não apresentaram atividade antimicrobiana. A atividade antagônica dos respectivos isolados apresentou atividade antimicrobiana contra Klebisiella pneumoneae e Pseudomonas aeruginosa ATCC  7853; possibilitando mais estudos para ampliar seu espectro de ação e para formular antimicrobianos contra essas espécies.
Studia austriaca XXXII (2024)
Authors: Cercignani Fausto
Published: October 2024

Studia austriaca XXXII (2024) - The Entire Volume
Demütigungserzählungen in autobiographischen Texten. Ein Vergleich zwischen Alfons Petzolds «Das rauhe Leben» (1920) und Christian Barons «Ein Mann seiner Klasse» (2020)
Authors: Mitterer Cornelius
Published: October 2024

This paper delves into autobiographical texts, uncovering thematic and narrative parallels, with a keen focus on the depiction of humiliations in Das rauhe Leben [The Rough Life] by Alfons Petzold and Ein Mann seiner Klasse [A Man of his Class] by Christian Baron. It posits humiliation as both excluding and order-establishing, yet also catalyzing resistance to societal exclusion. Following a theoretical examination of humiliation, the study scrutinizes how it shapes the autobiographical narratives, analyzing narrative techniques, its impact on plot and character, spatial significance, and associated discourses.
基于LDA模型的地方政府工作报告政策组合分析
Authors: 曹 权宽
Published: October 2024

新质生产力的形成与发展离不开地方政府科学、有效的政策组合的支撑，为探究地方政府工作报告中政策组合关注重点及变化趋势，本文通过对全国2010-2022年期间地级市政府工作报告的文本分析，使用LDA模型及JS散度的计算方法，识别出地方政府工作报告中政策组合主题及其演变特征，总结政策组合主题各时期变化特点及背后可能的原因，并提出要重视地方政府政策组合的导向作用，形成科学有效的政策体系，助力我国经济高质量发展，加快形成新质生产力。
De Toeslagenaffaire en Andere Complexe Problemen
Authors: Boelhouwer Marieke , Loykens Ellen , Van Geert Paul
Published: October 2024

Wanneer een situatie complex is en veel dingen met elkaar verweven zijn wordt er vaak, vanuit de hulpverlening, in een analyse gestreefd naar overzicht en ordening van de feiten om zo tot een beslissing en advies voor mogelijk handelen te komen: hoe nu verder? Echter, in de praktijk werkt deze zoektocht vaak contraproductief. De theorie van complexe dynamische systemen (CDS) maakt het mogelijk om complexe casussen te analyseren. Een analyse waarin niet alleen het ouder-kind-probleem centraal staat, maar waarbij ook het omliggende netwerk (waaronder de hulpverlening) onder de loep wordt genomen. Met het maken van een Verklarende Analyse (VA), waarbij de huidige hulpvraag van bijvoorbeeld ouders leidend is, worden de theoretische componenten en procesmechanismen van de CDS-theorie geconcretiseerd.
Сейсмический риск населения Армении
Authors: Назаретян Сергей , Арутюнян Рубен
Published: October 2024

Основной целью данной статьи является оценка и составление карты сейсмического риска населения территории Армении вследствие максимальных сейсмических воздействий в данном пункте согласно строительным нормам 2020г. Риск оценен по 10 ячейкам с площадью 1.1–4.9тыс. км2, которые соответствуют сейсмическим зонам действующей нормативной вероятностной карты общего сейсмического районирования. Людские потерии были рассчитаны для всех населенных пунктов Армении (49 городов и 949 сел), расположенные в разных ячейках, с учетом тяжелых повреждении (четвертой и пятой степеней) жилых здании. Основными научными результатами проведенных исследований являются разработанный методический подход для оценки риска и составленная первая карта риска населения Армении
Սույն հոդվածի հիմնական նպատակն է գնահատել և կազմել Հայաս-տանի տարածքի բնակչության (մարդկային կորուստների) սեյսմիկ ռիսկի քարտեզը առավելագույն սեյսմիկ ազդեցությունների դեպքում ըստ 2020թ. Շինարարական նորմերի: Ռիսկը գնահատվել է 1,1–4,9 հազար կմ2 մակերեսով բջիջներով (հատվածներով), որոնք համապատասխան ում են ընդհանուր սեյսմիկ գոտիավորման գործող նորմատիվ քարտեզի սեյսմիկ գոտիներին: Մարդկային կորուստները հաշվարկվել են ՀՀ բոլոր բնակավայրերի (49 քաղաքև 949 գյուղ) համար հաշվի առնելով բնակելի շենքերի հնարավոր ծանր (չորրորդ և հինգերորդ աստիճանի) վնասվածքները։ Աշխատանքի հիմնական արդյունքներն են՝ մշակած մեթոդիկան և ՀՀ տարածքի բնակչության սեյսմիկռիսկի առաջին անգամ կազմած քարտեզը։
The main purpose of this article is to assess and compile a map of the seismic risk of the population of Armenia due to maximum seismic impacts in accordancewith the 2020 building codes. The risk is assessed for 10 cells (sectors) with an area of 1.1–4.9 thօusand km2, which correspond to seismic zones ofthe current normative probabilistic map of general seismic zoning. Human losses were calculated for all settlements of Armenia (49 cities and 949 villages), located in different cells, taking into account severe damage (fourth and fifth degrees) to residential buildings.The main result of the work is the developed methodological approaches and the first risk map of the population of the territory of Armenia.
Survival Regression Model Allowing for Exposure-Mediator Interaction: Analysis of Kenya Demographic Health Survey (KDHS) 2014 Data
Authors: Mundia Irene , Waititu Hellen , Owuor Nelson
Published: October 2024

Although infant and under-five mortality rates have decreased over the past decade, Kenya, like many other African nations, did not achieve the Millennium Development Goal (MDG) 4 target. To accelerate progress towards reaching Sustainable Development Goal 3 by 2030, it is essential to understand the factors influencing under-five child mortality (UFCM), taking into account all potential confounding variables and effect modifiers. The child mortality rate serves as a key health indicator for any country. This study used data from the 2014 Kenya Demographic and Health Survey (KHDS). This paper introduces the concept of decomposing the total effect of an independent variable into three components: a direct effect, an indirect effect, and an interactive effect. We attempt to account for the direct effect of an independent variable on the outcome, then proceed to check the effect of the presence of a possible mediator and, furthermore, the possible interactions between an exposure variable and a mediator variable. The outcome variable was UFCM, and the study was to determine the effect of mother’s education on UFCM, in the presence of mediators such as mother’s income and the effect via the interaction between mother’s education and maternal income was estimated. To capture the effect of mediation and interactions in the context of survival analysis, an Aalen additive model, including a product term for the exposure and mediator term, was developed. The methods were further illustrated with practical approach to KDHS data. KDHS has data on a broad scope of risk factors for UFCM. Computations for all data sets was implemented using the freely available R-software package. This analysis suggests that while a significant portion of the impact of maternal education on UFCM is mediated by increasing maternal income, it is the interaction between maternal education and maternal income that leads to a reduction in UFCM. Interventions targeting an increase in income among mothers with no education level would yield a greater reduction in UFCM than interventions targeting mothers with a higher education level. The total effect was ascribed to an interaction between the mother’s education level and maternal income, and part of it is attributable to pure indirect effect, and a given proportion is attributable to pure direct effect. The majority of the total effect (70%)is attributed to the interaction between change from no education level to primary education level and maternal income. 22% is associated with the pure direct effect, while 8% is linked to the pure indirect effect. Interventions with a given increase in income among those with no education level would yield a greater reduction in UFCM than interventions targeting mothers with a higher education level.