bluuebunny/crossref_metadata_2025 huggingface dataset:
Les structures économiques créées par l’État français dans la circonscription de Dijon du ministère de la Production industrielle (1940-1944)
Authors: Vouzelle Dimitri
Published: March 2023

Le ministère de la Production industrielle, les comités d’organisation et l’Office central de répartition des produits industriels sont trois structures économiques nouvelles créées par l’État français en 1940. Ces instances sont chargées respectivement de diriger la politique industrielle, d’organiser les branches et de gérer les pénuries entraînées par la défaite de juin 1940 et l’occupation allemande. Le ministère de la Production industrielle instaure des délégations régionales placées sous l’égide d’un inspecteur général. L’étude de l’inspection générale de Dijon permet d’analyser la déclinaison régionale de ces nouvelles structures économiques et de questionner la réalité du discours de l’État français sur la nécessaire décentralisation.
Le choix de la foudre. Une histoire de l’arrivée de l’électricité dans la ville provinciale de Dijon (1882-1927)
Authors: Kuntz Lucas
Published: March 2023

Afin de conquérir les imaginaires de son temps, la « Fée électricité » se fraya une place dans la société sous la promesse qu’elle fera advenir un nouvel espace épuré des plaies de l’industrialisation. Pourtant, en portant le regard sur l’arrivée de l’électricité dans la ville de Dijon, cette étude montre qu’elle est loin d’être une histoire sans dissonance. Au contraire, tout au long de sa diffusion dans l’espace urbain dijonnais, le nouveau système technique qui l’accompagne a dû surmonter de nombreux défis pour pouvoir faire sa place dans une société et un environnement qu’il illumine tout autant qu’il brusque. En scrutant la gêne et l’appréhension suscitées par la précoce centrale électrique de 1885 puis par l’enveloppement de la ville sous le « filet » électrique, se donne à voir les accommodements mis en œuvre pour faciliter l’adhésion des Dijonnais à un environnement nouveau et potentiellement dangereux. Enfin, si son histoire fut, d’un côté, celle de la dilatation du champ du visible, de l’autre, elle fut celle de la dissimulation progressive aux yeux des abonnés dijonnais de toute une constellation électrique de fils et d’objets qui continuait pour autant à se développer.
Disparité
Authors: Salvadero Jérémie
Published: March 2023

L’essaimage des groupes lacaniens trouve-t-il ses racines dans l’expérience analytique elle-même ? Certes l’entre, l’écart, le divers, la coupure, mais aussi la séparation sont aux principes de l’analyse, mais la structure ne s’apprend pas de l’expérience et là le lien social entre analystes compte. Cet article interrogera les voies du branchement de l’expérience à la structure, d’où dépendent les lectures de Lacan.
Les nouveaux « dysparates » à l’école : des diagnostics handicapants portés sur les enfants
Authors: Diez Verónica
Published: March 2023

Face à la prolifération, dans les écoles, de nouveaux diagnostics « dys », cet article essaie de tracer le rapport entre l’école, la psychiatrie et l’enfance (selon Ariès, Foucault, Canguilhem), en rappelant qu’il existe une autre pédagogie, celle capable d’interpréter les manifestations particulières de l’enfant comme une réponse subjective ; celle aussi capable de revendiquer la prise de position, la création et le jeu comme indispensables pour éveiller le désir d’apprendre et soutenir le plaisir d’enseigner. Enfin, nous verrons comment « l’Ernesto » de Duras a appris à lire.
Les nouvelles technologies en information et communication (NTICS) et les pratiques en travail social. Questionnements et enjeux
Authors: Sisavath Ariane , Grenier Josée , Bourque Mélanie
Published: March 2023

Cet article s’intéresse à l’usage des Nouvelles technologies de l’information et de la communication (NTIC) par les professionnelles du travail social. Le texte, à partir d’une revue de littérature, dresse un état des lieux sur l’usage des NTIC dans le système de santé et des services sociaux en soulevant différents enjeux pour les travailleuses sociales, la pratique d’intervention sociale et les personnes accompagnées. Il vise plus largement à réfléchir sur le rapport qu’ont les professionnelles avec les conditions de travail marquées par les TIC dans le secteur de la santé et des services sociaux, et la responsabilité des organisations en santé et services sociaux pour une bonne gouvernance dans leur usage.
Du feuillage de textes littéraires à l’œuvre recomposée chez François Bon
Authors: Siaugues Fanny
Published: March 2023

Cette contribution analyse un ensemble de textes de François Bon dont l’hétérogénéité des supports (livresque et numérique) entraîne une hétérogénéité des modes de lecture. Nous proposons la notion de feuillage pour qualifier les textualisations multiples à laquelle prête la textualité numérique, cette dernière stimulant une réflexion plus générale sur la textualité et la transtextualité.
Parasitology and Covid-19: epidemiological, immunological, pathological, and therapeutic aspects
Authors: Nasiri Kamyar , Mortezania Zohreh , Oftadehbalani Sanaz , Sani Mohammad Khosousi , Daemi Amin , Hosseini Seyyedeh Touran , Döğüş Yusuf , Yönden Zafer
Published: March 2023

Studies suggest that there is a complex interaction between parasitic infections, human microbiota, and host immunity. Reports have shown that there is the prevalence of viral diseases have inverse correlations with their severities (as is the case for Covid-19), their resulting mortalities, and helminth infections in endemic areas. This review study was conducted to discover the possible association between parasitic infections and Covid-19 epidemics from immunological, pathological, and therapeutic aspects. Our studies were conducted by reviewing texts, reports, and articles on reputable websites such as PubMed, Science Direct, medRxvi, Google Scholar, and bioRxiv published by 2022 07 April for keywords such as a parasite, helminth, radioactive, COVID-19 or SARS-CoV-2. In particular, reports of co-infection with helminths with complications and severity of Covid-19 in endemic areas were considered. The findings indicate that parasitic helminths can regulate host immune responses associated with a viral infection. For example, intestinal parasitic infections may be effective in reducing the symptoms of SARS-CoV-2 and the complications of Covid-19. Infected hosts can induce an innate and Th2-compatible immune response to CD4+ T cells, eosinophils, and interleukins (IL-4, IL-5, and IL-10). Chronic helminth infections prevent strong immune responses by altering the host response to T helper 2 (Th2). Interestingly, some antimalarial drugs, such as Artemisinin-based combination therapies (ACTs), may inhibit SARS-CoV-2-induced severe acute respiratory syndrome (SARS). Parasitic infections may alter the host's immune response to SARS-CoV-2 with potentially beneficial or detrimental effects. However, more large-scale epidemiological studies are needed to uncover the links between parasitic infections and COVID-19 and to clarify existing ambiguities.
Le duc et la société
Authors: Boutoulle Frédéric
Published: March 2023

Bien éclairée par les cartulaires ecclésiastiques à partir des années 1070-1080, la société du Bordelais offre une organisation des pouvoirs particulière. Cette étude montre que la figure ducale, habituellement minorée par l’historiographie, peut être réévaluée. À la tête d’un domaine dont l’emprise territoriale est reconstituée, dominant un tissu seigneurial marqué par des seigneuries locales et des seigneuries châtelaines ne lui portant pas ombrage, le duc d’Aquitaine reste dans cette partie de la Gascogne, en dépit de ses absences, une figure majeure. La paysannerie libre y est importante. Le mariage d’Aliénor d’Aquitaine et d’Henri II Plantagenêt change la donne (1152). Dans les décennies qui suivent, le roi d’Angleterre et son fils, Richard Cœur de Lion, engagés dans de fréquents conflits, imposent un renforcement de leur autorité par l’introduction de nouvelles coutumes féodales, le relèvement de la fiscalité et par le biais de la paix du roi. Les liens sont renforcés avec l’aristocratie, nettement militarisée, ainsi qu’avec les communautés, requises au service militaire ou associées à la perception des revenus publics. Les années 1180 marquent l’acmé de ce premier temps du roi-duc.
Current situation of the expansion of the functional economy in the Brussels-Capital Region
Authors: Ruwet Coline , Lohest François , Hoe Roxane De , Maréchal Kevin , Muylaert Coralie , Thiry Géraldine , Roman Philippe
Published: March 2023

La Région de Bruxelles-Capitale (RBC) s’est engagée, depuis 2016, à mettre la transition au cœur de sa stratégie économique. Parmi les modèles économiques prometteurs figure l’économie de la fonctionnalité (EF), par laquelle la vente de l’usage d’un bien est substituée à la vente du bien lui-même. Plusieurs vertus lui sont attribuées en matière de soutenabilité. Ainsi, la rétention de la propriété des biens par les entreprises inciterait ces dernières à choisir des produits durables. La mise à disposition d’un même bien pour divers usagers limiterait les quantités produites. L’EF catalyserait aussi l’ancrage local des systèmes productifs et de consommation. Pourtant, en RBC, le modèle de l’EF reste encore peu connu, mal compris et peine à se déployer. C’est pourquoi le présent article, issu d’une recherche de 4 ans sur l’EF en RBC, poursuit trois objectifs : 1) il dresse un panorama original de l’état actuel de l’EF en RBC et de la diversité des besoins auxquels l’EF pourrait répondre ; 2) il analyse les dispositifs institutionnels de soutien de l’EF en RBC, et 3) il s’interroge sur l’adéquation entre les dispositifs institutionnels de soutien à une économie soutenable en RBC et le déploiement de l’EF dans la Région. Il ressort de cette étude exploratoire que l’EF est encore peu présente, tant institutionnellement que dans le tissu économique bruxellois. Il semblerait dès lors pertinent de donner davantage de place au modèle de l’EF, en créant des espaces permettant à des acteurs économiques d’expérimenter le modèle et d’en évaluer les effets en termes de soutenabilité, de construire une vision commune et de définir les trajectoires de son déploiement.
COMPARATIVE STUDY OF HEURISTIC-BASED SUPPORT VECTOR MACHINE AND NEURAL NETWORK FOR THERMOGRAM BREAST CANCER DETECTION WITH ENTROPY FEATURES
Authors: Suryawanshi Sonalee P. , Dharmani Bhaveshkumar C.
Published: March 2023

Thermography is a noncontact, noninvasive imaging technology that is commonly utilized in the medical profession. As early identification of cancer is critical, the computer-assisted method can enhance the diagnosis rate, curing, and survival of cancer patients. Early diagnosis is one of the major essential steps in decreasing the health and socioeconomic consequences of this condition, given the high cost of therapy and the large prevalence of afflicted people. Mammography is currently the majorly utilized procedure for detecting breast cancer. Yet, owing to the low contrast that occurs from a thick breast, mammography is not advised for young women, and alternate methods must be investigated. This work plans to develop a comparative evaluation of two well-performing heuristic-based expert systems for detecting thermogram breast cancer. The thermogram images are taken from the standard DMR dataset. Then, the given images are transferred to the pre-processing stage. Here, the input thermogram images are accomplished by contrast enhancement and mean filtering. Then the Gradient Vector Flow Snakes (GVFS) model is adopted for breast segmentation, and Optimized Fuzzy [Formula: see text]-Means Clustering (OFCM) is developed for abnormality segmentation. From the segmented region of interest, the entropy-based features are acquired. In the classification phase, the “Heuristic-based Support Vector Machine” (HSVM) and “Heuristic-based Neural Network” (HNN) are introduced, which diagnose the breast cancer-affected images. The modifications on SVM and NN are extended by the Oppositional Improvement-based Tunicate Swarm Algorithm (OI-TSA). Furthermore, the suggested models are compared to the traditional SVM and NN classifiers, as well as other classifiers, to validate their competitive performance. From the results, the better accuracy and precision of the designed OI-TSA–HNN model are found to be 96% and 98.4%, respectively. Therefore, the findings confirm that the offered approach shows effectiveness in thermogram breast cancer detection.
Provably Dwindling Three-Party Spurious Classical and Quantum Key Distribution Protocols
Authors: V. Sathya , Manivannan Kirankumar , P. Prema , S. Saranya , Misra Sanjay
Published: March 2023

This chapter presents quantum key distribution protocols (QKDPs) to safeguard security in large networks, ushering in new directions in classical cryptography and quantum cryptography. Two three-party QKDPs, one with implicit user authentication and the other with explicit mutual authentication, are proposed to demonstrate the merits of the new combination, which include the following: 1) Security against such attacks as man-in-the-middle, eavesdropping, and replay, 2) Efficiency is improved as the proposed protocols contain the fewest number of communication rounds among existing QKDPs, and 3) Two parties can share and use a long-term secret (repeatedly). To prove the security of the proposed schemes, this work also presents a new primitive called the unbiased-chosen basis (UCB) assumption.
Future Perspective of Quantum Cryptography for Smart Cities of the 21st Century
Authors: Das Shalbani , Das Ajanta
Published: March 2023

Maintaining security in smart cities and various smart applications has become a most challenging research domain to provide secure access to the society. Exposure of digital data to intruders can easily happen through different smart gadgets knowingly or unknowingly. To ensure security, the role of quantum cryptography is essential in this regard. Quantum cryptography is achieved by utilizing the polarization property of photon and quantum key distribution (QKD). In contrast to a classical computer, quantum computers achieve exponential speedup through reversible operations with the intention to provide security without compromising processing speed in smart applications. In this chapter, concepts, features, and technologies of smart cities are presented. Next, the important role of quantum computing in security with quantum key distribution protocols are explained. This chapter presents an algorithm of encryption and secret key to give the insights of QKD protocol. The chapter concludes with future directives of QKD in smart cities.
New Trends of Edge Computing Techniques for Trusting Analysis of Networks
Authors: Al-Janabi Samaher
Published: March 2023

Specification, design, and development principles of the future internet are enmeshed in the communication system. This term encompasses the emergence of future large multi-dimensional high-speed heterogeneous and interconnected networked ICT infrastructures to facilitate new groundbreaking trends like the internet of things (IoT) together with the communication system. In this research, an analysis of NdR structures has been carried out, and a comparison to chordal rings of 4th degree made. It was found that there do not exist optimal NdR structures with the number of nodes in one ring greater than 5. It was discovered that there is a close correlation between NdR structures and 4th-degree chordal rings that make it possible to choose NdR structure with the minimum diameter and average path length based on the analysis of correlated chordal ring graphs. It simplifies and shortens the process of choosing the best length of the inner ring chord.
Aviation and Climate Change
Authors: Padhra Anil , Kurnaz Salim
Published: March 2023

The aviation industry is currently on a path to becoming climate-neutral and various stakeholders such as airlines, airports, and regulatory bodies are setting targets to achieve this goal. The purpose of this chapter is to explain aviation's contribution to climate change and the existing efforts of the industry to reduce and mitigate climate impact. The chapter covers recent evidence suggesting that our changing climate is beginning to impact the industry, largely in a negative manner. Therefore, the industry will need to plan and adapt to its changing environment while developing new technologies and approaches. The challenges and opportunities of alternative aircraft fuel and energy source are presented, along with modifications to infrastructure that will accelerate the transition to a carbon and climate-neutral industry.
Rethinking Managerial Practice on Low-Cost Airline Organizational Structures
Authors: Charernnit Kanittha , Kankaew Kannapat , Waramontri Rojanard , Kungwol Korawin
Published: March 2023

This chapter investigates the managerial practices of low-cost carriers during the pandemic enhancing its operations to remain in track. The managerial practices in the study were high competence workforce, organizational culture, risk management, and strategic human resources management. The multiple regression was applied. The results found that LCCs highlighted on risk management, followed by high competence workforce, and strategic human resource management affecting to organizational structure. Overall, there seems to be some evidence to indicate that the discrepancies and risk management plan for any circumstances of uncertainty must be implemented. While the training and development of employees should be conducted continuously especially during the period of non-operating. A further issue suggested to practice the strategic human resource management (SHRM), that aligned organization objectives fit with the current situation both internally and externally, since the SHRM would eventually affect to organizational structure as a whole.
A Case Study of Lufthansa, Vueling, and Wizz Air Aircraft Turnarounds at Lisbon Airport
Authors: Costa João Pedro , Quadros Rui , Barqueira Ana
Published: March 2023

Ground handling services must be provided in accordance with the airlines' strategy in order to add value and create competitive advantage for the contracting airline, and it is therefore critical to understand how airlines shape ground handling services based on their business models. This study addresses ground handling services by focusing on the aircraft turnarounds of full-service, hybrid and low-cost airlines. It aims to extend the knowledge of the procedures, activities, and resources of aircraft turnarounds by comparing, based on qualitative research using the case study method, the characteristics of Lufthansa, Vueling and Wizz Air aircraft turnarounds. The results point out that the tasks related to unloading/unloading the holds, cleaning the cabin, and disembarking/embarking passengers, are the turnaround tasks that show the most differences between the three business models, playing an important role in the value creation strategy and in increasing the competitive advantage of airlines in ground handling services.
Device-to-Device (D2D) Communication for Advanced Wireless Communication
Authors: Kumar Pradeep , Bhowmick Abhijit
Published: March 2023

In cellular networks, device-to-device (D2D) communication is a new paradigm. In this chapter, the end-to-end performance (outage, throughput, improvement in spectrum utilization, and energy efficiency) of a non-linear energy harvesting D2D network underlaying a cellular network will be studied under a channel quality constraint. A D2D node harvests energy from RF signal of cellular users (CU) and power transfer units (PTUs) and transmits its information in hybrid mode. Spectrum sensing, censoring of users, and energy harvesting are incorporated to make the study more realistic. Spectrum sensing provides information about the CU spectrum status, censoring technique eliminates the D2D users from the transmission process of those who have bad quality channels. Analytical expressions of an outage, throughput, improvement in spectrum utilization (ISU), and energy efficiency are provided. The impact of the interference threshold on CU, the censoring threshold, and the saturation level of the energy harvester on network performance parameters is addressed.
Cooperative Rate Splitting (C-RS)
Authors: Saharan Jyoti , Baghla Silki , Gupta Dinesh Kumar
Published: March 2023

In a 5G wireless communication system, demands of massive connectivity, ultra-low latency, higher data rates, higher reliability, and many more are fulfilled by NOMA (non-orthogonal multiple access) which is one of the potential candidates that can carry multiple users at the same time and frequency. As NOMA uses the power allocation method to transmit signals, a problem of mismatch between quality of service (QoS) and channel conditions of the users occurs. To resolve this issue, a scheme cooperative rate-splitting non-orthogonal multiple access (C-RS-NOMA) has been proposed in this work to enhance the performance of downlink power-domain NOMA in terms of outage probability, system capacity, spectrum efficiency, and energy efficiency. The performance of the proposed techniques has also been compared with the existing cooperative-NOMA and traditional NOMA techniques. The simulation results showed the improvement in different key parameters of C-RS-NOMA with respect to the existing NOMA and cooperative NOMA schemes.
Compact Dual Fractal Curves-Based Microstrip Patch Antenna for 5G Applications
Authors: Kaur Manpreet
Published: March 2023

The aim of this work is to design and characterize a compact 5G antenna with an appreciable bandwidth. In the suggested antenna, two fractal curves are applied onto the conducting patch that helped to achieve the targeted operational characteristics. The whole patch is printed on the chosen FR4 material. The modified rectangular patch is placed on the top side, whereas a partial ground is placed on the bottom side. The antenna size observed is 45 mm2. The overall adjustments of the specific design parameters are carried out for better S11 characteristics at the fundamental resonance. The operational band stretches from 25.99 GHz to 27.72 GHz with a fractional bandwidth of 6.4%. The designed antenna showed resonance at 26.75 GHz with S11 value -21.00 dB. The proposed antenna possesses good S11 characteristics, appreciable gain, and significant bandwidth at the operational frequency band. Moreover, the influence of variations in the antenna geometry has also been demonstrated for deep understanding.
Circularly Polarized Antennas
Authors: Banerjee Utsab , Karmakar Anirban , Saha Anuradha
Published: March 2023

This article is intended to present a comprehensive, technical review of circularly polarized (CP) antennas for an array of applications in various fields of wireless communication, emphasizing on the recent developments in the projected research. The article should also present a comparative study of various approaches reported in the open literature, with an aim to highlight the contribution of CP antenna systems and their chronological development in the domain of wireless communication technology. The primary motive of this literature is to (a) highlight the methodologies used by different attempts to portray and analyze the different aspects in which circularly polarized antennas find their applications in modern day wireless communication, (b) provide a practical viewpoint of the future scope of study, based upon the past and present state-of-art research trends, and (c) provide a conceptual and technical support to present day antenna designers to help the process of enhancement of innovation and multiple system integration.
Impact of Call Drop Ratio Over 5G Network
Authors: Pandey Jay Kumar , Ahamad Shahanawaj , Veeraiah Vivek , Adil Nishchal , Dhabliya Dharmesh , Koujalagi Ashok , Gupta Ankur
Published: March 2023

The 5G network is the main topic of this investigation. 5G is expected to be far more advanced than 4G since it makes use of three distinct bands of the network spectrum. The acronym “5G” refers to the latest generation of wireless communications. With 5G, communications will improve all across the world. The purpose of this research is to examine the consequences of the increasing call drop ratio in 5G networks. In other words, if a user's current session is interrupted, they will need to make a new connection to continue using the service. One area where 5G excels over its predecessors, 4G (and LTE), is in reducing latency. Also, there would be fewer lost calls for individuals utilizing VoIP because network uptime will have risen significantly. Reduced call failure rates lead to happier customers.
The Role of Two-Dimensional Materials in the Design of Future Wireless Communications Systems
Authors: Vargas-Bernal Rafael
Published: March 2023

A crucial technology to meet the growing demand for faster wireless communication is terahertz band (0.1–10 THz) communication. New generations of technology, such as 5G and 6G telecommunications, which have faster transmission speeds, larger network capacities, and shorter delays, will find extensive use soon. Due to fabrication and installation restrictions, particularly for smaller sizes, conventional telecommunications devices cannot support the new frequency. Two-dimensional materials have been proposed as the most suitable possibility to design and implement wireless telecommunications devices that meet these requirements. This chapter describes the advances made in the design of antennas, resonators, and electromagnetic interference shielding systems based on graphene and MXenes. Despite the advances achieved so far, future research directions required to commercialize the developed test-stage devices are also described. These materials must be investigated in this century to guarantee the success of 5G and 6G communications.
5G and 6G Wireless Communication
Authors: Sikkanan Sobana , T. Seerangurayar , S. Krishna Prabha , M. Kasthuri
Published: March 2023

The 6G wireless communication network has shown its tremendous advantages in digital transformation of societies. 6G enables reliable, pervasive, and near instant wireless connectivity by integrating aerial, maritime, and terrestrial communications. The development of cutting-edge technologies like machine learning, blockchain, millimeter wave communication, non-orthogonal multiple access, tera-Hertz communication, quantum communication/quantum machine learning, fog/edge computing, and tactile Internet encourages the demand of beyond 5G and 6G communication. An effective wireless communication system must be capable of satisfying the user requirements such as increase in capacity, efficiency flexibility, coverage, and quality of experience. As the number of users and coverage area increases, the complexity of designing a 6G network is also getting increased. In recent years several research works are applying ML to wireless communication. This chapter discusses about the application of ML in the area of massive MIMO, NOMA,OWC, polar codes, and security of wireless communication.
CTNRL
Authors: Tang Yanlong , Ye Zhonglin , Zhao Haixing , Ji Ying
Published: March 2023

Network representation learning is one of the important works of analyzing network information. Its purpose is to learn a vector for each node in the network and map it into the vector space, and the resulting number of node dimensions is much smaller than the number of nodes in the network. Most of the current work only considers local features and ignores other features in the network, such as attribute features. Aiming at such problems, this paper proposes novel mechanisms of combining network topology, which models node text information and node clustering information on the basis of network structure and then constrains the learning process of network representation to obtain the optimal network node vector. The method is experimentally verified on three datasets: Citeseer (M10), DBLP (V4), and SDBLP. Experimental results show that the proposed method is better than the algorithm based on network topology and text feature. Good experimental results are obtained, which verifies the feasibility of the algorithm and achieves the expected experimental results.
A Study of Satisfaction and Loyalty for Continuance Intention of Mobile Wallet in India
Authors: Amoroso Donald , Lim Ricardo , Lei Jialiang , Saxena Anupriya
Published: March 2023

How do satisfaction and loyalty drive Indian consumers' continued use of mobile financial applications? Do age, education, and income moderate these relationships? An analysis of 1,060 Indian participants revealed that consumer satisfaction and loyalty were correlated with continuance intention. Satisfaction seemed to be a more emotional factor for the continuance of mobile wallet use, while loyalty was more cognitive behavior. Income and education showed opposite and significant moderating effects on the main driving factors. In general, the research findings can provide a deeper understanding of the continued use of mobile financial applications.
The Moderation Role of AI-Enabled Service Quality on the Attitude Toward Fitness Apps
Authors: Tseng Hsiao-Ting , Lo Chia-Lun , Chen Chun-Chih
Published: March 2023

Artificial intelligent technology is rapidly transforming the fitness apps landscape by applying data mining technologies within given parameters. These wide-ranging AI-enabled services improve user interface and enhance customers' experience when exercising with the fitness apps. The current study integrated the four antecedents—technological functions, intrinsic information quality, perceived enjoyment, and social connection—to investigate the moderating influence of AI-enabled service quality on users' attitude toward physical activity. PLS-SEM was used to analyze and validate a sample of 170 participants. The findings posited that individuals' attitude toward physical activity is encouraged by the (1) technological functions (2) intrinsic information quality, and (3) perceived enjoyment. Further, the moderating role of AI-enabled service positively influencing the attitude toward physical activity with technological functions was also established.
Image Quality Improvement of SENSE Parallel Imaging MRI Post-Acquisition Using Denoising Non-Local Mean Filter Technique
Authors: Angella Shelly , Indrati Rini , Yoshandi Tengku Mohammad
Published: March 2023

Abstract. Magnetic Resonance Imaging (MRI) is a medical tool that is used to form images of organs, soft tissues, bones and almost all internal body structures. The MRI image acquisition process takes a long time. One of the efforts to shorten the examination acquisition time is using the parallel imaging technique, namely SENSE. However, SENSE has a weakness, namely reducing the Signal Noise to Ratio (SNR). One of the denoising methods that can increase SNR is the Nonlocal mean filter (NLM). Post-image acquisition denoising becomes a cheaper and more effective alternative to use. The aim of this research is to measure the increase of SNR value in MRI SENSE images between before the denoising technique and after the denoising technique. This research is expected to produce a faster scanning time and maintain the quality of the MRI image. This experimental research was carried out by applying the SENSE parallel imaging technique to R-factors 2 and 4. The sequence used is T2WI TSE on axial slice phantom. The T2WI TSE SENSE phantom MRI image was corrected with the NLM denoising technique to produce a better quality image. Each variation is measured image information before and after the denoising technique. Image information is assessed quantitatively by measuring SNR. The results of the parametric test showed that there was an increase in the SNR value after the application of the denoising technique on the Phantom T2WI TSE SENSE MRI image at r-factor 2 and r-factor 4. The different test on the SNR assessment resulted in a p value < 0.001.
The Influence of X-Ray Tube Current-Time Variations Toward Signal to Noise Ratio (SNR) in Digital Radiography: A Phantom Study
Authors: Utami Asih Puji , Istiqomah Anisa Nur
Published: March 2023

Several image enhancement applications can be used to increase SNR and brightness. However, if the setting of tube current-time is too high, the application can not reduce the radiation dose. So, It is necessary to test tube current-time variations on the SNR value and image quality to determine the effect on body organs and radiation dose. This study aims to determine the influence of tube current-time on SNR and with this research is expected to be an input for radiographers in the field to pay attention to parameter settings for patients. We compared five tube current-time variations on the Antebrachii examination by using Phantom (58 kV, 32 mA, 50 mSec), (58 kV, 100 mA, 50 mSec), (58 kV, 32 mA, 5 mAs), (58 kV , 32 mA, 5 mAs) and (58kV, 100 mA, 5 mAs). Then we made a circle of ROI with a diameter of 0.2 cm2 on the Bone, Soft-tissue and Air sections in that four tube current-time variations, each of which has 7 ROI points tocalculate the SNR and the radiation dose is seen from the image. There is a difference in SNR on tube current-time changes and affects the image quality with an Adjusted R square value of 0.003 and 0.865. It shows that there is a change in tube current that affects the Signal to Noise Ratio between organs. Since it is proven that changes in tube current-time affect image quality, further research can formulate an ideal parameter for the examination of each organ.
Study of Modified Absorber Plate with Aluminium Foam of Solar Water Heating System
Authors: Basri Muhammad Hasan , Jalaluddin Jalaluddin , Tarakka Rustan , Syahid Muhammad , Ilahi Rahmadhani Muhammad Anis
Published: March 2023

Solar water heating system (SWHS) is water heating equipment that utilizes solar energy for domestic and industrial needs. An absorber plate is the main part of the SWHS that functions to absorb solar energy. Porous materials are efficient in increasing heat transfer, energy efficiency, energy storage, and reducing reflectance losses. Efforts have been made to add aluminium foam as a porous material on the lower and upper surfaces of the absorber plate. Porous materials function absorb heat and store radiant heat energy before being transferred to the fluid. Experimental tests were carried out by testing three models of absorber plates on a solar thermal energy unit with similar conditions. The first model is a standard flat plate (SFP) without aluminium foam. The second model combines standard flat plate and aluminium foam (SFP-TAF), placed on top of the SFP. The third model combines standard flat plate and aluminium foam (SFP-BAF), placed under the SFP. The results showed that the SFP-BAF model has a higher thermal efficiency than the other models. The SFP-BAF model has an efficiency increase of 2.71 % at a flow rate of 10 L/h and 5.39 % flow rate of 12 L/h compared with the standard model (SFP). The position of the aluminium foam at the bottom surface is substantial enough to help absorb and store radiant heat for transfer to circulating water.
Elastic-Wave Characteristics from Crack Initiation and Propagation of High-Strength Steel Immersed in Acetic-Acid Solution
Authors: Gu Kyoung Hee , Paeng Jae Eun , Lee Gum Hwa , Nam Ki Woo
Published: March 2023

In this study, elastic waves were detected when different bending stresses were applied to cracked specimens of high-strength steel (SKD11: HV550) immersed in a 0.057 M solution of acetic acid (CH3COOH), and frequency characteristics were analyzed using time-frequency analysis. The dominant frequency obtained using the tensile test was approximately 103 kHz, and those in the acetic-acid solution without stress were approximately 32 and 101 kHz. The dominant frequencies of the crack specimens in which cracks propagated were approximately 30–40 (F1), 60–85 (F2), and 100–110 (F3) kHz. An elastic wave was obtained by corrosion, pitting, crack initiation, and propagation but not during the hydrogen aggregation time. The dominant frequencies of the crack specimens without crack propagation were approximately 28–33 (F1) and 94–109 (F3) kHz. These were the same as the dominant frequency in the acetic-acid solution under nonstress conditions. The fractured surface showed many traces of pitting and corrosion regardless of the applied stress, resulting in microcracks in the Cr carbide. -----------------------------------------------------------------------------------------------------------
A pitfall in echographic diagnosis of abdominal aortic aneurysm: when para-aortic lymph nodes are the trick
Authors: Natale Francesco , Molinari Riccardo , Covino Simona , Alfieri Roberta , Limatola Mirella , De Luca Lorenzo , Pezzullo Enrica , Izzo Andrea , Cimmino Giovanni
Published: March 2023

The abdominal aortic aneurysm (AAA) is a potentially fatal asymptomatic disease. They progress silently with clinical complications that, when they occur, constitute a very serious event, frequently resulting in the patient's exitus. As a result, early detection and treatment are critical, because the right therapeutic strategy can halt the disease's natural progression. AAA is frequently discovered as an incidental finding during an abdominal ultrasound or a plain X-ray of the abdomen, which is required for other pathologies. The primary diagnostic tool for AAA identification is abdominal B-mode ultrasound. It is cheap, widely available, non-invasive, and has a high diagnostic sensitivity. However, this diagnostic tool may fail in rare cases due to misleading anatomical findings. We present an unusual flaw in echographic AAA evaluation that should be considered during the diagnostic work-up.
Emergency coronary angiography in a 90-plus population – outcomes at 5-year follow-up
Authors: Proença Tânia , Alves Pinto Ricardo , Martins Carvalho Miguel , Dias Paula , Macedo Filipe
Published: March 2023

Elderly people represent a vulnerable and increasing population presenting with acute coronary syndrome (ACS). Our goal was to evaluate a group of very old patients who underwent emergency coronary angiography (CA). We retrospectively analyzed a group of very old patients (≥90-year-old) who underwent emergency CA from 2008 to 2020. Survival and MACE [a composite of all-cause death, ischemic stroke, ACS or hospitalization for acute heart failure] were compared with an aged-matched control population with ACS not submitted to emergency CA. A total of 34 patients were enrolled, 56% female, median age of 92-year-old. Almost all patients had STE-ACS. In CA, 65% had multivessel disease and coronary intervention was performed in 71%. More than one-third evolved in Killip class III/IV and 70% had left ventricular dysfunction. Regarding mortality, 38% of patients died in the index event versus 25% in the aged-matched control group (p=0.319). During five years of follow-up, there was no significant difference in mortality between the two groups (Log-rank = 0.403) and more than 50% of patients died in two years. Comparing MACE occurrence, both groups were similar (Log-rank = 0.662), with more than 80% having at least one event in five years.  Very-old patients submitted to emergency CA had a high rate of multivessel disease and left ventricular dysfunction, in-hospital and follow-up mortality, and MACE. Compared to an aged-matched control group not submitted to emergency CA, they showed no survival or MACE benefit during a 5-year follow-up.
Lumbar Epidural Anesthesia in a High-Risk Patient with Advanced Lung Cancer, Multi-Organ Metastasis and Hydropneumothorax
Authors: Uslu Ahmed , Çekmen Nedim
Published: March 2023

Epidural anesthesia (EA) can be applied in the perioperative period (PP) in addition to general anesthesia (GA) or as a stand-alone anesthesia technique. EA provides better hemodynamic stability in high-risk patients, reduced neurohormonal surgical stress response, and preserved airway reflexes with spontaneous breathing. In addition, EA prevents pulmonary dysfunction through decreasing multifactorial mediators, improves pulmonary functions by reducing the decrease in functional residual capacity, and protects spontaneous respiratory and airway reflexes. Herein, we wanted to emphasize the importance of the perioperative approach, the choice of anesthesia technique, and the effects of this choice on the postoperative period in a high-risk patient with incidental stage four lung adenocarcinoma, right parietal brain, lumbar vertebral, liver, and adrenal metastasis, as well as hydropneumothorax. With a successful epidural catheterization and anesthesia, the patient was follow-up without any problems. As in our patient, we should adopt a multimodal approach in the perioperative period, perform a detailed examination before the operation, and evaluate all risks and benefits comparatively when choosing the most appropriate anesthesia technique. Thus, it should be kept in mind that the chosen technique will significantly affect perioperative complications, morbidity and mortality, drug use, length of hospital stay, and cost.
Clinical Improvement and Tumor Regression in Parturient With a Brain Tumor and Intracranial Bleeding After C-Section with General Anesthesia
Authors: Isngadi Isngadi , Hartono Ruddi , Willianto Andreas
Published: March 2023

Brain tumors and intracranial bleeding are rare cases in pregnancy. Anesthesia management for a C-section with comorbidity remains challenging. We presented a 33-year-old woman (34–36 weeks pregnant) with the complaint of weakness in her right extremities, blurred vision, and ptosis of her left eye from a month before hospitalization. The brain computed tomography (CT) revealed a mass at the left parasellar region with a bleeding component and cerebral edema accompanied by subfalcine herniation. We conducted general anesthesia for cesarean delivery in a patient with a brain-protective technique. Brain CT revealed a decrease in the mass size and neither intracranial bleeding nor cerebral edema. In conclusion, general anesthesia management provided a good outcome in a parturient with a brain tumor and intracranial bleeding that underwent C-section. The mechanism of clinical improvement and tumor regression is unclear and requires further research, but it is believed that it is related to pregnancy hormones.
Thoracic Interfacial Plane Block Versus Thoracic Paravertebral Block for Anesthesia in Gynecomastia Surgery
Authors: Abdelraheem Taysser M. , Naguib Tamer Mohamed , Elkeblawy Amira M.
Published: March 2023

Background:

Gynecomastia is a benign proliferative condition affecting the glandular tissue of the male breast. This study compared the efficacy of ultrasound-guided thoracic interfacial plane block (TIPB) with ultrasound-guided thoracic paravertebral block (TPVB) in providing anesthesia for gynecomastia surgery.

Materials and Methods:

This prospective randomized open label clinical trial included 90 patients scheduled for elective surgery for idiopathic gynecomastia. Patients were randomly allocated into three equal groups: group C (control group) received bilateral tumescent local anesthesia, group TPVB received bilateral ultrasound guided TPVB, and group TIPB received bilateral ultrasound guided TIPB. We evaluated postoperative analgesic requirements, pain score, and patient’s satisfaction.

Results:

Intraoperative fentanyl requirement and total diclofenac in the first 24 hours postoperative were significantly lower in both TPVB and TIPB groups compared to control group (P = 0.002 and P < 0.001, respectively). Patient satisfaction was significantly better (P = 0.004) in both TPVB and TIPB groups when compared to control group. In postoperative evaluation, we found both TPVB and TIPB produced significantly lower pain score compared to control group in 2-hours (P < 0.001) and 4-hours (P = 0.001) after the surgery. Mean arterial blood pressure, heart rate, and peripheral oxygen saturation were comparable in all groups, as well as the occurrence of complications.

Conclusion:

Either TIPB and TPVB may provide effective analgesic property for anesthesia in gynecomastia surgery. This is shown by lower intraoperative analgesic requirements, lower postoperative pain score, and better patient’s satisfaction.
Correlación entre redes sociales y métricas de revistas científicas
Authors: Cueva Estrada Jorge Cueva , Sumba Nacipucha Nicolás , Paredes Floril Priscila , Sanchez-Bayon Antonio , Carbo Guerrero Kenya
Published: March 2023

Introducción: Las revistas científicas (RC) garantizan la calidad y contribuyen a la construcción del conocimiento a través de la publicación y difusión de los resultados de investigación. Metodología: El estudio empírico tuvo un enfoque mixto, diseño no experimental transversal, alcances descriptivo y correlacional. La red social elegida para el análisis fue Facebook, la métrica fue la cantidad de citas registradas en el perfil de Google Scholar, la población fue de 2054 RC de Latinoamérica registradas en el catálogo 2.0 del Sistema Regional de Información en línea para Revistas Científicas Latindex. La data se analizó en el software SPSS 25, se realizó la prueba de coeficiente de correlación de Spearman. Resultados: Existe a) Correlación positiva baja entre las publicaciones en Facebook y citas obtenidas en Google Scholar, b) Correlación positiva moderada entre el número de seguidores de Facebook y el número de citas de Google Scholar c) Correlación positiva débil entre el número de seguidores de la RC en Facebook y el número de citas obtenidas por la RC en Google Scholar. Discusión: La limitación fue considerar una sola red social, se sugiere para futuras investigaciones incluir otras redes sociales y analizar el contenido compartido. Conclusiones:El uso de las redes sociales y estrategias de marketing por parte de las RC es una actividad que debe ser incorporada al cotidiano accionar considerando que, en los tiempos actuales gran parte de las actividades diarias de las personas -científicos e investigadores incluidos- se desarrollan a través de plataformas y dispositivos digitales.
Elevation in Rearing Temperature within Optimum Range Mitigate Immunosuppressive and Metabolic Stress Effect of High or Low Dietary Protein Level in Labeo Rohita Fingerlings
Authors: Kumar Shivendra , Sahu Narottam P , Gupta Sanjay K
Published: March 2023

In the present study, Labeo rohita fingerlings were maintained either at ambient water temperature (26ºC) for five weeks or exposed to 32ºC for one week then later maintained at 26ºC for four weeks. Fingerlings reared under different temperature regimes were fed with any of the four experimental diets containing 20, 30, 40 or 45% protein. Serum cortisol level was higher at 26ºC compared to 32ºC, and decrease with the increase in dietary protein level up to 40%. Fingerlings fed 30% and 40% protein recorded similar WBCS count and respiratory burst activity which was lower and higher respectively compared to 20% and 45% protein fed fingerlings. Correspondingly, lower WBCS count and higher NBT were recorded following exposure to higher temperature (32ºC) for one week compared to 26ºC exposure group. Significantly lower survival was recorded in groups fed with lowest (20%) and highest (45%) dietary protein level whereas fingerlings exposed to 32ºC for one week exhibited higher survival (%) compare to 26ºC. Present results indicate that both lower and higher level of dietary protein may cause metabolic stress to fingerlings, as might consequently lead to the depressed immunity and exposure of elevated temperature (32ºC) for one week mitigates this immunosuppressive effect.