bluuebunny/crossref_metadata_2025 huggingface dataset:
Smart Robot Cleaner Using Internet of Things
Authors: Muhammad Zulhilmi Hussin  , Jamaludin Jalani  , Muhammad Hilmi Powdzi  , Sujana Mohd Rejab
Published: June 2024

The most dreaded chore is cleaning the house where it is at the top of the list for many people. Cleaning the house is time consuming and must be carried out continuously. This study aims to design an autonomous robotic cleaner for a self-driving robot that automatically cleans the floor. The Smart Robot Cleaner is proposed and established using the Internet of Things (IoT). The robot is equipped with microfiber cleaning, a water tank, a water pump, ultrasonic sensors, a DC motor, a hose tube, and a wheel. The Arduino Uno is used as the main component and is connected with an ultrasonic sensor to detect any object and obstacles. To allow Internet of Things functions in this robot, the Bluetooth module is used as a command from the smartphone to control the movement. The experimental results showed that the performance of the proposed smart robot cleaner is able to clean various dirt, such as water, milk, and sauce. The robot can be manually and automatically controlled via smartphone.
What Phenomena Happen During Pyrolysis of Plastic? FTIR AND GC-MS Analysis of Pyrolyzed Low Linear Density Polyethylene (LLDPE) Polymer Particles Completed with Bibliometric Research Trend and Pyrolysis Chemical Reaction Mechanism
Authors: Asep Bayu Dani Nandiyanto  , Riri Noor Sucianto  , Salsa Rahmita Matildha  , Fauziyyah Zayyan Nur  , Teguh Kurniawan  , Muhammad Roil Bilad  , Nor Azwadi
Published: June 2024

This research aims to determine the compounds produced from the pyrolyzed Low Linear Density Polyethylene (LLDPE) using Fourier Transform Infrared (FTIR) and Gas Chromatography-Mass Spectroscopy (GC MS). We used pyrolysis of 985 g of 2-mm diameter LLDPE plastic ore at a temperature between 192-194°C for 135 min using a batch reactor (length x width x height = 35 cm x 24 cm x 44 cm) equipped with an outlet connected to two condensers (24°C). To ensure the chemical results, the reactor was connected in series to condensers 1 and 2. The results obtained in condenser 1 were 3 mL of 2-phase liquid with a strong odor. The upper fluid is yellow, and the lower fluid is brown. In condenser 2 (connected directly to condenser 1), 4 mL of yellow single-phase liquid was produced with a strong odor. The liquid obtained from the pyrolysis process was then analyzed by FTIR and GC-MS. FTIR results on both samples showed that the samples contained the functional groups O-H, CH₂, and C=O. The GC-MS results on condenser sample 2 showed that the pyrolysis product contained acetone compounds. This confirmed that pyrolysis caused chemical structural changes in LLDPE due to LLDPE chain bond-breaking reactions, producing many smaller chemical compounds. Additionally, some oxidation happens, which is due to the oxygen content in the reactor. This study provides new insights into the LLDPE pyrolysis mechanism and the physical and chemical properties of the liquid resulting from the pyrolysis process.
Effect of Indentation at Rolling Body Surfaces on the Film Formation in Elastohydrodynamic Lubrication Contact under Dynamic Loads
Authors: Dedi Rosa Putra Cupu  , Kahar Osman
Published: June 2024

Vibration is one of the phenomena that can occur during the operation of roller bearing which can lead to dynamic loads being subjected to the contact and thus, affect the film formation in elastohydrodynamic (EHD) contacts. On the other hand, surface textures such as artificial indentations and grooves greatly affect the film formation as well as the corresponding pressure distribution in the contact area, since the depths of the textures are usually much greater than the film thickness in the contact. This paper investigates the influence of an artificial indentation located on the rolling element, which passes through a point contact under dynamic loads by means of numerical simulations. Solutions to the Reynolds equation are performed and calculations of the elastic deformation equation, force balance equation and lubricant properties equations to show the effects of both indentation passing through the contact and a sinusoidal dynamic load on the film thickness as well as pressure profile of EHD point contact. Moreover, the effect of frequency and amplitude excitation of the dynamic load on the film formation was investigated. The results revealed that the artificial indentation under sinusoidal dynamic load of EHD point contact induced a significant effect on the thickness of the film formation and pressure distribution.
Review of Control Strategies for Improving the Photovoltaic Electrical Efficiency by Hybrid Active Cooling
Authors: Zahratul Laily Edaris  , Mohd Sazli Saad  , Mohammad Faridun Naim Tajuddin  , Mohamad Shukor Abdul Rahim  , Md. Hazrat Ali
Published: June 2024

Photovoltaic (PV) cooling systems are used widely in order to increase the PV efficiency. Most review paper was published for the role, design and cooling techniques of PV applications, there is a lack of collected and organised information regarding the latest and the newest updates on control strategies for PV cooling control systems. Hence, this paper presents a comprehensive review of PV cooling control strategies discussing the latest research works during the years from 2010 to 2022. PV/T hybrid cooling types are highlighted, followed by the main focus of this paper an extensive review of the control schemes for diverse types of PV cooling systems that have been carried out. This paper summarises most of the related work and also pays a special focus on research trends regarding the control of PV cooling systems that have been previously published in the literature. This review paper will be helpful to new researchers when identifying research directions for this particular area of interest.
Innovative Solutions for Melaka's River Water Treatment
Authors: Lee Kai Huang  , Mirza Farrukh Baig  , Ervina Efzan Mhd Noor
Published: June 2024

Melaka's rivers, essential for agriculture, drinking water, and transportation, face growing pollution challenges due to urbanization and industry, threatening their ecological balance. This study delved into the assessment of river water quality in Melaka and the design of a practical water treatment device tailored for river water purification. Extensive testing, involving Total Dissolved Solids (TDS) and pH analysis, shed light on the existing poor state of the Melaka River water. The devised water treatment device, encompassing diverse filter materials and a submersible pump, yielded noteworthy outcomes. Notably, experiment 4, employing activated carbon and cotton wool for both inlet and outlet, demonstrated the highest efficacy, reducing TDS levels by a remarkable 44.21%, surpassing other trials. The employed materials exhibited the potential to neutralize pH levels and clarify river water, with cotton wool effectively trapping residues and impurities.
Mathematical Models of Natural Rubber Sheets Drying: Difference Acid Coagulation Cases
Authors: Visit Eakvanich  , Wachara Kalasee  , Putipong Lakachaiworakun  , Panya Dangwilailux  , Wassachol Wattana
Published: June 2024

The mathematical model for drying process is a useful tool in process optimization and drying chamber design. The research purposes of this study were to investigate the influence of drying temperature on drying time and the modelling the drying kinetics of the natural rubber (NR) sheets. The NR sheets which produce from commercial formic acid, commercial acetic acids, and ammonia plus commercial formic acid were studied at drying temperature of 40, 50, and 60oC and air speed of 0.5 m/s. The results indicated that the drying time was substantially reduced with an increase in temperature. The moisture content ratio of rubber sheets produce from commercial formic acid coagulation was similar to the sheets produce from commercial acetic acids coagulation. However, the drying time of them were longer than the drying time of the sheets produce from ammonia plus commercial formic acid coagulation. Finally, the logarithmic model was the best model which suitable to predict the moisture content ratio of the sheets drying with all experimental condition.
A Transient Heat Transfer Analysis of Thermal Necrosis-Aided Dental Implant Removal
Authors: Muhammad Ikman Ishak  , Ruslizam Daud  , Siti Noor Fazliah Mohd Noor
Published: June 2024

A prevalent and widely favoured solution for replacing lost teeth is the use of dental implants. The removal of dental implants, even when they are osseointegrated but unsuccessful, can be traumatic, resulting in the loss of healthy bone and adding complexity to the treatment procedure. Reducing the trauma associated with implant removal can be achieved by intentionally weakening the bone-implant attachment. To achieve this objective, a suggested approach involves utilising thermal necrosis to aid in the minimally invasive removal of implants. The objective of this study was to use finite element analysis to explore the optimal power output for intentionally inducing thermal necrosis in a dental implant. SolidWorks software was utilised to create a three-dimensional model of a dental implant assembly, which includes an abutment, screw, and implant body integrated into a segment of mandibular bone. The model was subsequently analysed using ANSYS software, applying device powers ranging from 5 to 40 W in 5 W increments on the top surface of the abutment. The results of the study showed that there was a considerable elevation in the temperatures of the bone and implant, even when employing the low power settings commonly used in electrosurgical procedures. Elevating the power level has led to a decrease in the time required for the bone and implant to reach 47°C, the initial temperature at which bone necrosis occurs. However, it is crucial to take into account the significant temperature rise in the implant body at higher power levels. The implementation of lower power settings could present a viable approach to achieving controlled osteonecrosis.
Numerical Investigate the Effect of Turbulence Models on the CFD Computation of Submarine Resistance
Authors: Hien Le Tat  , Nguyen Duy Anh  , Nguyen Thi Ngoc Hoa
Published: June 2024

Up to now, there is no developed ‘universal’ turbulence model in CFD simulation, so employing an appropriate turbulence model is crucial for accurately predicting the hydrodynamics of a ship, especially for submarines. This study focuses on investigating the impact of turbulence models on the predicted results in frictional and pressure resistance components and flow features around the submarine at different ship velocities by the CFD method. Four various turbulence models consisting of the Reynolds Stress Model, realizable k-ε two-layer, standard k-ω, and SST k-ω turbulence models are investigated in this study. The obtained numerical results demonstrate variations in resistance and the flow patterns around the submarine due to the effect of turbulence model. Based on the obtained results, the paper points out that, the choice of turbulence model significantly affects the frictional resistance of the submarine and the SST K-ω turbulence model provided the highest level of accuracy in comparison with experimental data. The model employed in this research is the DARPA SUBOFF submarine model
Evaluation of Heat Transfer and Fluid Dynamics across a Backward Facing Step for Mobile Cooling Applications Utilizing CNT Nanofluid in Laminar Conditions
Authors: Afrah Turki Awad  , Abdulelah Hameed Yaseen  , Adnan M. Hussein
Published: June 2024

In a variety of engineering applications, the efficacy of heat dissipation in mobile cooling systems is greatly influenced by the Backward Facing Step. Its significance in optimizing cooling solutions for mobile devices is highlighted by the fact that its design and fluid dynamics are crucial in minimizing skin friction and improving passive heat transfer. In this paper, we present a verification of an advanced numerical model for heat transfer and fluid flow through a Backward Facing Step, used in mobile cooling. The objective of this study is to explore fluid separation, a method enhancing passive heat transfer and reducing skin friction. ANSYS/FLUENT software has been used to solve the backward facing step in a horizontal duct filled with pure water. Carbon nanotube (CNT) dispresed into the base fluid at different volume fractions of 0.2%, 0.65%, and 1%. This study focused on laminar flow conditions ranging from Reynolds numbers 200 to 900. In order to reduce the computation time and ensuring the accuracy and reliability of numerical simulations, a grid independence study has been conducted. The findings revealed a substantial rise in the average Nusselt number and heat transfer coefficient with increased Reynolds number and volume fraction of nanoparticles. Specifically, the nanofluid (CNT/water) exhibited the highest average Nusselt number and heat transfer coefficient with volume fractions 1%. Furthermore, the research showed a decrease in the skin friction factor as both Reynolds number increased and nanoparticles’ volume fraction decreased. The increments of nanoparticles' concentrations lead to increase viscosity, promotes agglomeration, alters flow behaviour by inducing turbulence, and enhances heat transfer. These factors collectively contribute to higher skin friction due to increased resistance to fluid flow and disrupted streamline patterns
Transient Analysis on the Crosswind Effect to the Aerodynamics of High-speed Train Travelled on the Bridge Between Two Tunnels at Jakarta -Bandung Track
Authors: Harinaldi Harinaldi  , Farhan T Pratama
Published: June 2024

The rapid evolution of global transportation technology is exemplified by Indonesia's innovative high-speed train initiative, linking Jakarta and Bandung in an impressive 45 minutes. Operating at 350 km/h, the HST CR400AF underscores the importance of aerodynamics in high-speed rail systems. This study delves into the significant impact of crosswind on key aerodynamic factors (drag, lift, rolling moment) within the tunnel-bridge-tunnel configuration. Leveraging Computational Fluid Dynamics (CFD) through ANSYS FLUENT, the analysis explores crosswind variations at 0 m/s, 10 m/s, and 25 m/s. Results reveal a proportional increase in aerodynamic load with higher crosswind intensities: 1.67 times for drag, 58.8 times for lift, and 29.8 times for rolling moment. Notable observations include pronounced aerodynamic load fluctuations during the "OUT" process, with the head section bearing the greatest load, followed by the tail and middle sections. These findings contribute valuable insights to the global discourse on enhancing safety and efficiency in high-speed rail systems
Improving the Performance of a Forced-flow Desalination Unit using a Vortex Generator
Authors: Dan Mugisidi  , Oktarina Heriyani
Published: June 2024

Water is a primary need for living creatures, and water scarcity can trigger a crisis. Water scarcity is becoming an issue in Indonesia, especially in coastal village areas, including salt-producing areas. Salt production involves evaporating large amounts of seawater in concentration ponds. Using evaporated seawater as a source of clean water would reduce the risk of water scarcity. Therefore, this study aims to obtain fresh water by condensing water vapour that evaporates in a desalination unit. More specifically, the study uses a vortex generator to increase the rate and efficiency of evaporation in a forced-flow desalination unit. This research was conducted indoors to reduce uncontrollable variables. An evaporation container with a volume of 0.35 m3 was filled with seawater. The rate of evaporation in the desalination unit with a vortex generator was compared to that in a unit without a vortex generator. The results show that the vortex generator leads to faster evaporation. The rate of evaporation with a vortex generator was 13% higher than that without a vortex generator, and the gained output ratio increased 14% with the vortex generator. Therefore, it can be concluded that vortex generators can improve the performance of desalination equipment
Numerical Model Parameters Choice of Helical Savonius Wind Rotor: CFD Investigation and Experimental Validation
Authors: Mariem Lajnef  , Mabrouk Mosbahi  , abid Hasna  , Zied Driss  , Emanuele Amato  , Tullio Tucciarelli  , Marco Sinagra
Published: June 2024

Electrical power is essential for human beings welfare. The available wind as a clean and renewable source of energy has whetted extensive interest over decades. Savonius vertical axis wind rotor as an energy converter has the merit of being adequate for specific implementations owing to its lower cost and independency on wind direction. From this perspective, multiple studies have been conducted to boost its efficiency. This research work emphasizes on the helical Savonius wind rotor (HSWR). The basic objective is to investigate the impact of selecting the numerical model parameters on its aerodynamic and performance characteristics. Experimental tests were realized with a 3D printed HSWR in a wind tunnel. The experimental performances in terms of power, static and dynamic torque coefficients were addressed. Next, a numerical study was undertaken through Ansys Fluent 17.0 software. Grid, turbulence model and rotating domain size tests were examined. Good accordance was obtained, which validated the numerical model with an averaged error of 5%. The maximum power coefficient proved to be equal to 0.124 at a tip speed ratio of 0.73 and 0.1224 at a tip speed ratio of 0.69, respectively, numerically and experimentally
Fostering Decolonization, Reading and Multilingualism through Book Donation: A Case Study of One Primary School in South Africa
Authors: Mbatha Siphelele , Mokoena Mosebetsi
Published: June 2024

Despite the UNESCO declaration of literacy and access to primary education as a fundamental human right, many developing countries still face low literacy levels, limited access to reading material and poor reading culture. This can arguably be used to explain why children from developing countries are (according to large-scale studies such as Progress in International Reading Competency Study) performing below the expected standard compared to those from developed countries. While the low literacy levels are not solely attributed to limited access to reading material, the researchers argue that exploring the positive impacts of book donation will, in one way or the other, subvert the issue around low reading competency levels, and advance multilingualism as well as curriculum decolonization. This paper, therefore, discusses how decolonialism, reading and multilingualism are concurrently developed and realized through book donation. Using the decolonial thought theory as a lens, a qualitative design and case study approach were followed to explore how teachers used donated books to foster decolonization and advance reading as well as multilingualism in their classrooms. Three teachers from one rural primary school participated in the semi-structured interviews. Data was analyzed thematically. The findings revealed that the donated books written by university students empowered teachers to decolonize lesson presentations. In addition, the study found that the different languages in which the donated books were written promoted multilingualism. Finally, teachers reported learners’ interest in reading the donated books written by university students. This study concluded that it is important to evaluate the practice of book donation considering the current debates around decolonization, low reading competencies and multilingualism.

Keywords: Book Donation; Decolonization, Primary Schools, Rural, Multilingualism
Resultados. ¿Cómo analizarlos y presentarlos?
Authors:   Universidad del Zulia, Pereira Burgos Morela , Díaz-Barrios Jazmín ,   Universidad del Zulia/Global Humanistic University
Published: June 2024

En este capítulo se plantea la forma de presentar los hallazgos de una investigación. La explicación se realiza a través de ejemplos comentados de tesis tanto doctorales como de maestría y, consistente con la amplitud metodológica de este libro, se exhiben ejemplos de documentos con enfoques cuantitativo, cualitativo y mixto. En primer término, se presentan recomendaciones generales para el tesista, luego se entra en la redacción del capítulo IV, iniciando con la introducción necesaria que cada capítulo debe tener para guiar al lector de la tesis en cuanto a que hallará en ese apartado; luego se pasa al desarrollo de un objetivo. En este caso, se presenta el objetivo completo y se van comentando los aspectos significativos a tomar en cuenta en el desarrollo. Esta estrategia metodológica pretende dar una orientación al lector en la praxis de cómo construir la presentación de resultados.
Picture this! Vulnerable women’s perspectives on SDGs prioritisation
Authors: Annan-Aggrey Eunice , Arku Godwin
Published: June 2024

This study examines the most significant development risk women at risk of being left behind in the SDGs implementation experience. It uses the photovoice method and the social amplification of risk framework (SARF) to highlight development risks in participants’ everyday lives that increase their likelihood of being left behind. The findings demonstrate that while the challenges faced by at-risk individuals can be complex, frameworks such as the SARF can assist in understanding the underlying socio-cultural processes that intensify the effects of risks faced by those vulnerable to being left behind. The priorities identified by participants suggest that aside from targeting the needs of the farthest behind, initiatives prioritised in SDGs localisation should also harness the linkages between the SDGs to optimise the limited time and resources available for SDG implementation. The findings are relevant to identifying strategies to operationalise the ‘leave no one behind’ (LNOB) commitment effectively and efficiently in developing contexts.

This article was published open access under a CC BY licence:
https://creativecommons.org/licences/by/4.0
.
Deep Optical Emission-line Images of Nine Known and Three New Galactic Supernova Remnants
Authors: Fesen Robert A. , Drechsler Marcel , Strottner Xavier , Falls Bray , Sainty Yann , Martino Nicolas , Galli Richard , Ludgate Mathew , Blauensteiner Markus , Reich Wolfgang , Walker Sean , di Cicco Dennis , Mittelman David , Morgan Curtis , Kaeouach Aziz Ettahar , Rupert Justin , Benkhaldoun Zouhair
Published: June 2024

Deep optical emission-line images are presented for nine known plus three new Galactic supernova remnants (SNRs), all but one having at least one angular dimension >1°. Wide-field images taken in Hα and [O iii] λ5007 reveal many new and surprising remnant structures including large remnant shock extensions and “breakout” features not seen in published optical or radio data. These images represent over 12,000 individual images totaling more than 1000 hr of exposure time taken over the last 2 yr mainly using small aperture telescopes, which detected fainter nebular line emissions than published emission-line images. During the course of this imaging program, we discovered three new SNRs, namely G107.5-5.1 (the Nereides Nebula), G209.9-8.2, and G210.5+1.3, two of which have diameters >1.°5. In addition to offering greater structural detail on the nine already known SNRs, a key finding of this study is the importance of [O iii] emission-line imaging for mapping the complete shock emissions of Galactic SNRs.
Crystalline as-deposited TiO 2 anatase thin films grown from TDMAT and water using thermal atomic layer deposition with in situ layer-by-layer air annealing
Authors: Wooding Jamie P. , Kalaitzidou Kyriaki , Losego Mark D.
Published: June 2024

We report a new thermal atomic layer deposition (thermal-ALD) process including an air exposure as a third precursor to deposit crystalline TiO2 anatase thin films from tetrakis(dimethylamido)titanium(IV) (TDMAT) and water at deposition temperatures as low as 180 °C and film thicknesses as low as 10 nm. This ALD process enables TiO2-antase crystal growth during the deposition at low temperatures (< 220 °C). This additional oxidant pulse is used to fully oxidize the Ti to a 4+ state in the amorphous film, lowering the barrier to crystalline anatase formation. This new approach is informed by preliminary studies of post-deposition annealing (PDA) of thermal ALD films in both nitrogen and air atmospheres, which demonstrate the importance of having an oxidizing atmosphere to achieve the nucleation of the crystalline anatase phase. This oxidizing atmosphere is subsequently introduced into the ALD cycle as a third precursor and is shown to be more effective and efficient in promoting the crystalline transformation than even by post-deposition annealing. The crystalline anatase phase is verified by Raman spectroscopy and grazing incidence X-ray diffraction (GIXRD). The mechanism for crystallization during the TDMAT/H2O/air ALD cycle is probed by chemical state analysis via X-ray photoelectron spectroscopy (XPS). We propose that sub-oxidation in TiO2 thin films deposited by the thermal-ALD process inhibits crystallization during ALD from TDMAT/H2O chemistry. Scanning electron microscopy (SEM) is used to investigate the microstructure of these TiO2 thin films as a function of thickness (5 nm to 50 nm) and deposition temperature (180 °C to 220 °C). The reported layer-by-layer air anneal process is found to crystallize entire films in shorter total process times than thermal-ALD with ex situ post deposition annealing at identical temperatures, presumably due to the improved surface diffusion kinetics accessed during the deposition process.
Considering sustainability and resilience in a location-routing problem
Authors: Figueiredo Bruna , Lopes Rui Borges
Published: June 2024

Purpose: Sustainability and resilience have emerged as two important topics. Consumers and governmental entities are becoming increasingly aware of the existing environmental and social issues, motivating companies to adopt more sustainable practices. In addition, the uncertainty and unpredictability that characterize today's competitive environment force companies to be able to handle disruptions efficiently. Despite this, when looking at some classes of problems in literature, cost is still the most, or even the only, objective addressed. This work analyses the integration of sustainability and resilience concerns in a class of problems that is often found in logistics, the Location-Routing Problem (LRP).Design/methodology/approach: A multi-objective LRP is addressed with the following objectives: minimization of the total cost of the logistics network, minimization of the environmental impact of CO2 emissions, and maximization of the resilience of the distribution network. Aiming to explore the effect that designing a more sustainable and resilient distribution network can have on its operating costs, the ?-constraint method is applied.Findings: Results show that resilience and environmental impacts, from a practical point of view, should not be considered in isolation, as they can have significant impacts on costs. Nevertheless, it is conceivable to design logistics networks that ensure a good compromise between operating costs, environmental impacts, and resilience to disruptions.Originality/value: This paper is an exploratory study addressing a new type of location-routing problem which, besides the usual cost objective, considers sustainability and resilience as objectives. The paper evaluates the sensitivity of the costs of logistics networks to the improvement of their resilience and sustainability. A new multi-objective formulation is proposed for this class of problems, tested in instances based on real-world data. The paper may provide important managerial insights for designing sustainable and resilient logistics networks.
Differentially expressed morphological characters depend on sex and ontogenetic stage in the crab Goniopsis cruentata (Crustacea: Grapsidae)
Authors: Nunes da Silva Lucas , De Melo Junior Mauro , Shinozaki-Mendes Renata Akemi
Published: June 2024

The hypothesis of this study was that significant variations in the growth rates of Goniopsis cruentata are related to intersexual and age-related characteristics, particularly in areas identified as secondary sexual (pleon, carapace and chelipeds). From February 2019 to January 2020, a total of 713 individuals were captured, 378 males and 335 females, with a carapace width ranging from 0.42 to 6.59 cm. Males and females showed negative allometry (β0<1) for all linear morphometric relationships, with an ontogenetic difference (p=0.0001) for all comparisons. In geometric morphometry, the dorsal view showed a significant difference in sexual comparisons (p=0.0001), in which males were wider in the posterior region than females. Furthermore, there was a significant difference in the abdominal region between young and adult females (p=0.0001), with the young ones being triangular and the adults oval, a characteristic brachyuran behaviour. We observed morphological separation in cheliped shape in sexual comparison (F×M) and laterality (R×L) (p=0.0001), with no ontogenetic variations (A×J). Goniopsis cruentata showed a noteworthy ontogenetic and sexual dimorphism. In addition, the discovery of cheliped variation was recorded for arboreal species that do not show a high degree of heterochely. Understanding these ontogenetic variations is crucial for effective conservation strategies because it allows specific life stages and their corresponding needs to be identified.
Transmission through pronominal displacement in Chimamanda Ngozi Adichie’s “Tomorrow is too Far” (2009)
Authors: Sorlin Sandrine
Published: June 2024

This article focuses on Chimamanda Ngozi Adichie’s short story, “Tomorrow is Too Far”, one of the two short stories written in the second person in her 2009 The Thing Around Your Neck collection. It aims at showing to what extent the referential and address functions of you in this story are blended in a way very specific to Adichie’s writing, as compared with other narratological and stylistic configurations designed by you-narratives that I have studied elsewhere (Sorlin 2022). I will explore the purposes of its use in this trauma story, by first showing that communication is marked by indirectness, either through indirect reporting of characters’ exchanges or with the reader who is positioned as an ‘overhearer’ by a narratorial voice that could be referred to, in parallel, as the ‘overspeaker’ – that is the equivalent of a cinematic ‘voice-over’ – bringing readers to align with its perspective in the attention to be paid to the ‘you-character’. Lastly I will bring to light the number of metaleptic displacements that accompany the pronominal displacement, through which another narrative is obliquely transmitted, behind the one at hand, and conveyed by grammatical and syntactic markers of exclusion and invisibilisation of the unnamed female you protagonist.
Harnessing Applied AI
Authors: Christiana Beulah Viji , Kunduru Krishnamohan Reddy , Chandrasekar J. , Charith B. , Thangatamilan M. , Prasad A. Rajendra
Published: June 2024

This chapter delves into the transformative potential of applied artificial intelligence (AI) in various industries, highlighting its role in optimizing processes across sectors like manufacturing, logistics, and healthcare. It also discusses how AI is reshaping business operations, from sales and marketing to customer service and human resources, through the adoption of AI-powered tools and platforms. The chapter provides a comprehensive overview of AI's impact on modern business ecosystems. The chapter discusses the use of AI to enhance customer experiences, focusing on personalized interactions, tailored recommendations, and improved satisfaction across industries. It also addresses ethical considerations, governance frameworks, and future trends in AI. The chapter highlights the transformative potential of AI and advocates for continuous adaptation and innovation to fully utilize its benefits in industry and business.
Organized Ways to Increase the Fatigue of Mechanical Products Such as Freezer Drawer Based on Quantum-Transferred Failure Model and Sample Size
Authors: Woo Seongwoo , Hassen Yimer M. , Mebrahtu Gezae , Alem Hadush Tedros , O'Neal Dennis L.
Published: June 2024

To improve the fatigue failure of systems, parametric accelerated life testing (ALT) is suggested. It includes (1) BX life scheme, (2) load evaluation, (3) a tailored representative of ALTs with adjustments, and (4) a calculation of whether product gets to the goal for the BX life. A quantum-transferred life-stress failure approach and sample size are recommended. As a case examination, the reliability of new drawer has been studied. In the 1st ALT, the handles fractured because of structural defects. As action plans, the whole handle width by providing an enhanced design that could correct the failures was enlarged. In the 2nd ALT, the slide rails of Freezer drawer also were being cracked and fractured because they did not have sufficient capacity to withstand the repeated food load in the Freezer drawer. To upgrade the design of slide rails in the drawer, additional strengthened ribs and boss, and an internal chamber in both rails were attached. After parametric ALTs, the altered Freezer drawer is anticipated to fulfill the lifetime aim – B1 life of 10 years.
Systematic review on Artificial Intelligence in the editorial management of scientific journals
Authors: Araujo Inastrilla Carlos Rafael , Llosa Santana Mayelin , Gutiérrez Vera Dayami , Roche Madrigal María del Carmen , Rodríguez Urrutia Alejandro , Araujo Inastrilla Alejandro
Published: June 2024

INTRODUCTION: scientific journals play a crucial role in the dissemination and validation of scientific knowledge, and editorial management ranges from conceptualization to post-publication of content. Artificial intelligence (AI) has had a great impact on scientific communication and editorial management of scientific journals. AI can offer solutions and benefits for editorial management, but it also poses technical, economic, social and ethical challenges that should be considered and approached with caution and responsibility.OBJECTIVE: to describe the benefits and limitations of the use of AI in the editorial management of scientific journals through a systematic literature review.METHOD: a systematic literature review was conducted based on the PRISMA methodology. An information search was carried out in different bibliographic database systems, indexing systems and search engines, and inclusion and exclusion criteria were applied to the identified studies.RESULTS: the information search allowed retrieving a total of 2750 sources, of which 10 articles that met the stated criteria were included. Benefits such as the facilitation of writing, translation, review and editing tasks were identified, as well as limitations related to ethical issues, bias, errors and plagiarism generated by AI.CONCLUSIONS: While AI can streamline the production and analysis of information distribution, it also poses challenges in terms of reliability, ethics and authenticity of published content. It requires the critical involvement of human intelligence for proper exploitation.
Теорема Шаудера о неподвижной точке и принцип максимума Понтрягина
Authors: Avakov Evgeny Rachievich , Magaril-Il'yaev Georgii Georgievich
Published: June 2024

В работе выводится принцип максимума Понтрягина для общей задачи оптимального управления, где основным инструментом является абстрактная лемма об обратной функции, доказательство которой существенно опирается на теорему Шаудера о неподвижной точке. Такой подход позволяет сделать доказательство принципа максимума Понтрягина достаточно коротким и весьма прозрачным.
Библиография: 13 наименований.
Задача Дирихле для неоднородного уравнения смешанного типа с оператором Лаврентьева-Бицадзе
Authors: Sabitov Kamil Basirovich
Published: June 2024

Для уравнения смешанного типа с оператором Лаврентьева-Бицадзе в прямоугольной области изучена первая граничная задача. Показано, что корректность постановки задачи существенным образом зависит от отношения сторон прямоугольника из гиперболической части смешанной области. Установлен критерий единственности решения. Само решение построено в виде суммы ряда Фурье. При обосновании равномерной сходимости ряда возникает проблема малых знаменателей. В связи с чем установлены оценки малых знаменателей об отделенности от нуля с соответствующей асимптотикой. Эти оценки позволили доказать сходимость ряда в классе регулярных решений данного уравнения. Доказаны оценки об устойчивости решения от заданных граничных функций и правой части.
Библиография: 17 наименований.
Усреднение эллиптических и параболических уравнений с периодическими коэффициентами в ограниченной области при условии Неймана
Authors: Suslina Tatiana Aleksandrovna
Published: June 2024

Пусть $\mathcal{O}\subset\mathbb{R}^d$ - ограниченная область с границей класса $C^{1,1}$. В пространстве $L_2(\mathcal{O};\mathbb{C}^n)$ рассматривается самосопряженный матричный эллиптический дифференциальный оператор $B_{N,\varepsilon}$, $0<\varepsilon\leqslant1$, второго порядка при условии Неймана на границе. Старшая часть оператора задана в факторизованной форме. Оператор включает члены первого и нулевого порядков. Коэффициенты оператора $B_{N,\varepsilon}$ периодичны и зависят от $\mathbf{x}/\varepsilon$. Изучается обобщенная резольвента $(B_{N,\varepsilon}-\zeta Q_0( {\cdot} /\varepsilon))^{-1}$, где $Q_0$ - периодическая ограниченная и положительно определенная матрица-функция, а $\zeta$ - комплексный параметр. Получены аппроксимации обобщенной резольвенты по операторной норме в $L_2(\mathcal{O};\mathbb{C}^n)$ и по норме операторов, действующих из $L_2(\mathcal{O};\mathbb{C}^n)$ в класс Соболева $H^1(\mathcal{O};\mathbb{C}^n)$, с двухпараметрическими (относительно $\varepsilon$ и $\zeta$) оценками погрешности. Результаты применяются к изучению поведения решений начально-краевой задачи с условием Неймана для параболического уравнения $Q_0(\mathbf{x}/\varepsilon) \partial_t \mathbf{u}_\varepsilon(\mathbf{x},t) = -(B_{N,\varepsilon} \mathbf{u}_\varepsilon)(\mathbf{x},t)$ в цилиндре $\mathcal{O} \times (0,T)$, где $0<T \le \infty$.
Библиография: 51 наименование.
Итерационный метод решения одного класса нелинейных интегральных уравнений с оператором Немыцкого на положительной полупрямой
Authors: Khachatryan Khachatur Aghavardovich , Petrosyan Haykanush Samvelovna
Published: June 2024

Рассматривается класс нелинейных интегральных уравнений с монотонным оператором Немыцкого на положительной полупрямой. Указанный класс интегральных уравнений встречается во многих направлениях современного естествознания. В частности, такие уравнения при различных ограничениях на нелинейность и ядро возникают в динамической теории $p$-адических струн для скалярного поля тахионов, в кинетической теории газов и плазмы в рамках обычной и модифицированной нелинейных моделей Бхатнагара-Гросса-Крука для кинетического уравнения Больцмана. Уравнения подобного характера встречаются также в теории нелинейного переноса излучения в неоднородных средах и в математической теории распространения эпидемических заболеваний в рамках модифицированной модели Дикмана-Капера. Доказывается конструктивная теорема существования ограниченного положительного и непрерывного решения. Получается равномерная оценка разности между предыдущей и последующей
итерациями, притом эти последовательные приближения равномерно сходятся к ограниченному непрерывному решению рассматриваемого уравнения. Исследуется асимптотическое поведение построенного решения на бесконечности. В частности, доказывается, что решение на бесконечности имеет положительный предел, который однозначно определяется из некоторого характеристического уравнения. Доказывается также, что разность между пределом и решением является суммируемой функцией на положительной полуоси. Используя некоторые геометрические оценки для выпуклых и вогнутых функций, а также опираясь на доказанную теорему об интегральной асимптотике, доказывается единственность решения в определенном подклассе неотрицательных нетривиальных непрерывных и ограниченных функций. С помощью полученных результатов удается также исследовать специальный класс нелинейных интегральных уравнений урысоновского типа на положительной полупрямой. В частности, доказывается существование положительного и ограниченного решения данного класса уравнений, а также изучаются некоторые качественные свойства построенного решения. Приводятся конкретные примеры прикладного характера соответствующего ядра и нелинейности для иллюстрации важности полученных результатов.
Библиография: 52 наименования.
Amphotericin B Deoxycholate Treatment of Post–Kala-Azar Dermal Leishmaniasis in India
Authors: Sundar Shyam , Chakravarty Jaya , Singh Jitendra , Verma Deepak , Agrawal Neha , Dinkar Anju
Published: June 2024

Post–kala-azar dermal leishmaniasis (PKDL) is widely prevalent in the endemic regions of India, but its treatment remains unsatisfactory. The WHO recommends a 12-week treatment with oral miltefosine, but its ocular toxicities are a serious concern. The late 1980s and early 1990s saw the use of sodium stibogluconate and amphotericin B (AmB) for a brief period. Both drugs had frequent adverse events and were expensive, and the duration of treatments was unacceptably long. This retrospective study evaluated, analyzed, and reported the outcomes of PKDL patients treated with a shorter course of AmB, the most effective antileishmanial drug. The hospital records of PKDL patients treated with AmB by 30 alternate-day infusions over 60 days (instead of conventional 60–80 infusions over 100–120 days) between September 2010 and August 2016 were reviewed. Only patients with confirmed parasitological diagnosis were included. Their records were studied for treatment-related adverse events, end-of-treatment parasitological status, and 12-month follow-up results. One hundred two patients were eligible for this study between September 2010 and August 2016. After therapy, 92/102 (90.2%) patients improved; 3 (2.9%) had to cease treatment owing to severe adverse effects, and one died of severe diarrhea unrelated to AmB. Six (5.9%) patients withdrew consent before the treatment was complete. At the 12-month evaluation, 89/102 (87.3%) patients attained a final cure. A 30-infusion regimen of AmB remains highly effective in PKDL. Without a shorter, safer, and more economical regimen for the treatment of PKDL, it should be used until a better regimen is available.
Decomposition Analysis of Socioeconomic Inequalities in Vaccination Dropout in Remote and Underserved Settings in Ethiopia
Authors: Shiferie Fisseha , Gebremedhin Samson , Andargie Gashaw , Tsegaye Dawit A. , Alemayehu Wondwossen A. , Fenta Teferi Gedif
Published: June 2024

Despite increments in immunization coverage over the past decades, substantial inequality due to wealth status has persisted in Ethiopia. This study aimed to decompose the concentration index into the contributions of individual factors to socioeconomic inequalities of childhood vaccination dropout in remote and underserved settings in Ethiopia by using a decomposition approach. A wealth index was developed by reducing 41 variables related to women’s household living standards into nine factors by using principal component analysis. The components were further totaled into a composite score and divided into five quintiles (poorest, poorer, middle, richer, and richest). Vaccination dropout was calculated as the proportion of children who did not get the pentavalent-3 vaccine among those who received the pentavalent-1 vaccine. The concentration index was used to estimate socioeconomic inequalities in childhood vaccination dropout, which was then decomposed to examine the factors contributing to socioeconomic inequalities in vaccination dropout. The overall concentration index was −0.179 (P <0.01), confirming the concentration of vaccination dropout among the lowest wealth strata. The decomposition analyses showed that wealth index significantly contributed to inequalities in vaccination dropout (49.7%). Place of residence also explained −16.2% of the inequality. Skilled birth attendance and availability of a health facility in the kebele (the lowest administrative government structure) also significantly contributed (33.6% and 12.6%, respectively) to inequalities in vaccination dropout. Wealth index, place of residence, skilled birth attendance, and availability of a health facility in the kebele largely contributed to the concentration of vaccination dropout among the lowest wealth strata. Policymakers should address vaccination inequality by designing more effective strategies.
Malnutrition: From Mother to Child
Authors: Petri William A. , Hendrick Jennifer , Haque Rashidul
Published: June 2024

Malnutrition in children, defined as a child who is more than 2 standard deviations below the norm for height- or weight-for-age, is a pervasive, population-wide problem in low- and middle-income countries. Malnutrition is associated with increased infant mortality and delayed neurocognitive development. A recent pooled analysis of more than 30 longitudinal cohort studies demonstrated that the conditions mothers lived in during pregnancy, and their access to adequate nutrition, was a major factor in the subsequent growth and health of their children. We review here this analysis and the hypothesis that interventions to address childhood malnutrition need to start before birth and continue throughout the critical first 1,000 days of life.
Green Mobility and the Environment: A Dialogue among Researchers
Authors: Corcione Felice E.
Published: June 2024

Embark on a transformative journey with Professor Felice E. Corcione's groundbreaking book, where environmental consciousness meets cutting-edge technology in mobility. Delving deep into the intricate relationship between mobility and the environment, Corcione offers insightful analyses of pollutants and lays the groundwork for sustainable practices. At the heart of Corcione's narrative lies the transformative potential of hydrogen, drawing inspiration from celestial phenomena and scientific innovation. With a focus on hydrogen's energy density and versatile applications in fuel cells, Corcione presents innovative solutions for sustainable transportation without compromising performance. Join Corcione and colleagues as they discuss pressing environmental challenges and chart a course towards a greener future. This book is more than just a read—it's a call to action to embrace "green mobility" and contribute to a sustainable future. Join the expedition towards zero-emission transportation and environmental stewardship. “This work is designed to outline a proposal for the rebirth of the planet in the name of renewable energy and a circular economy model affecting every economic sector—from agriculture and manufacturing to transportation.” Prisco Piscitelli Epidemiologist, Vice-president of the Italian Society of Environmental Medicine
Extending partial edge colorings of iterated cartesian products of cycles and paths
Authors: Casselgren Carl Johan , Granholm Jonas B. , Petros Fikre B.
Published: June 2024

We consider the problem of extending partial edge colorings of iterated
cartesian products of even cycles and paths, focusing on the case when the
precolored edges satisfy either an Evans-type condition or is a matching. In
particular, we prove that if $G=C^d_{2k}$ is the $d$th power of the cartesian
product of the even cycle $C_{2k}$ with itself, and at most $2d-1$ edges of $G$
are precolored, then there is a proper $2d$-edge coloring of $G$ that agrees
with the partial coloring. We show that the same conclusion holds, without
restrictions on the number of precolored edges, if any two precolored edges are
at distance at least $4$ from each other. For odd cycles of length at least
$5$, we prove that if $G=C^d_{2k+1}$ is the $d$th power of the cartesian
product of the odd cycle $C_{2k+1}$ with itself ($k\geq2$), and at most $2d$
edges of $G$ are precolored, then there is a proper $(2d+1)$-edge coloring of
$G$ that agrees with the partial coloring. Our results generalize previous ones
on precoloring extension of hypercubes [Journal of Graph Theory 95 (2020)
410--444].