bluuebunny/crossref_metadata_2025 huggingface dataset:
THE INFLUENCE OF THE MOTIVE FOR THE USE OF AUDIO-VISUAL DA'WAH MEDIA ON INCREASING THE SATISFACTION OF DA'WAH MESSAGES IN SURABAYA ISLAMIC STUDENTS
Authors: Nanik Mujiati
Published: January 2023

The studies background of audio-visual media use as the da’wah media often accessed by Surabaya Islamic students. The study aims to see how the motive of the use of audio-visual da’wah media on the increasing satisfaction of the da’wah message on Surabaya Islamic students has been. Research answer the problems, 1) what was the motive behind the use of audio-visual da’wah media toward the increasing satisfaction of the da’wah message on Surabaya Islamic students? 2) what percentage of the motive behind the use of audio-visual da’wah media on the increasing satisfaction of the da’wah message on Surabaya Islamic students?. Data collection techniques this research through questionnaires, observation, interviews, and documentation. The technical data analysis is done in statistical quantitative. Based on research, it is known that there has been a significant influence on the use of audio-visual da’wah media toward the increased satisfaction of the da’wah message on Surabaya Islamic students. The motive for the use of audio-visual da’wah media on raising the satisfaction of the da’wah message on Surabaya Islamic students is 10,8 %.  
Keywords: Da’wah, Audio-visual Media, Da’wah Message.
SEMIOTICS ANALYSIS OF THE INDONESIAN HALAL LOGO (STUDY OF ROLAND BARTHES ANALYSIS OF SEMIOTICS)
Authors: Yunita Indinabila
Published: January 2023

The Presence of Law no. 33 of 2014 concerning Halal Product Assurance mandated by Badan Penyelenggara Jaminan Produk Halal (BPJPH) has an impact on changing the halal logo in Indonesia. Now the Indonesian halal logo consists of a logogram and logotype. Using semiotic analysis from Roland Barthes, researchers try to examine the signs, connotations, and myths on the Indonesian halal logo.

The use of kufi calligraphy in logotypes is inseparable from its history, that kufi khat has been used since the time of Rasulullah SAW. Furthermore, in its application, logogram and logotype cannot be separated.

The researcher analyzed the use of white as the background in the logo, representing that BPJPH wants to show a new beginning based on the values of purity, sincerity, simplicity, and independence. The purple color in the logogram and logotype is believed to represent faith, piety, and high imagination. Historically, purple has represented courage. Apart from purple, this logo also has turquoise as its secondary color. Toska is considered to represent wisdom, calm, and stability.
Temporal Behaviors of Magnetic Helicity Injections by Self and Mutual Sunspot Rotations
Authors: Hasegawa Takahiro , Shimizu Toshifumi
Published: January 2023

Magnetic helicity is a physical parameter used to quantify the complexity of magnetic fields, providing an indication of the energy state in the coronal magnetic structure. We investigate the temporal evolution of magnetic helicity and its relationship to the occurrence of a variety of flares in the solar active region NOAA 12297, which was well observed using the Solar Dynamics Observatory/Helioseismic and Magnetic Imager in 2015 March. The active region produced many M-class flares and an X-class flare in two distinctive areas, both of which had a similar magnetic evolution, i.e., the opposite polarity of an emerging flux developed beside a preexisting sunspot, but exhibited flares with different magnitudes and frequencies. We derived the spatiotemporal evolution of the magnetic helicity injections and evaluated how spinning and braiding helicity injections evolved with time in the two areas. In one area, we observed a remarkable evolution, in which a negative spinning helicity injection in the preexisting sunspot increased in a positive helicity system, followed by the occurrence of the X-class flare. The negative helicity injection was clearly caused by the flux emergence that developed along the outer edge of the preexisting sunspot. The other area showed positive braiding helicity injections, with spinning helicity injections fluctuating concurrently with flux emergence, changing their signs several times, i.e., variable energy, and helicity input. The observed temporal behaviors of the helicity injections may explain different types of flare occurrences in the regions.
The Chemical Enrichment of the Milky Way Disk Evaluated Using Conditional Abundances
Authors: Ratcliffe Bridget L. , Ness Melissa K.
Published: January 2023

Chemical abundances of Milky Way disk stars are empirical tracers of its enrichment history. However, they capture joint-information that is valuable to disentangle. In this work, we quantify how individual abundances evolve across the present-day Galactic radius, at fixed supernovae contribution ([Fe/H], [Mg/Fe]). We use 18,135 Apache Point Observatory Galactic Evolution Experiment Data Release 17 red clump stars and 7943 GALactic Archaeology with HERMES Data Release 3 main-sequence stars to compare the abundance distributions conditioned on ([Fe/H], [Mg/Fe]) across 3–13 kpc and 6.5–9.5 kpc, respectively. We examine 15 elements: C, N, Al, K (light), O, Si, S, Ca, (α), Mn, Ni, Cr, Cu, (iron-peak) Ce, Ba (s-process) and Eu (r-process). We find that the conditional neutron-capture and light elements most significantly trace variations in the disk’s enrichment history, with absolute conditional radial gradients ≤0.03 dex kpc−1. The other elements studied have absolute conditional gradients ≲0.01 dex kpc−1. We uncover structured conditional abundance variations with [Fe/H] for the low-α, but not the high-α
, sequence. The average scatter between the mean conditional abundances at different radii is σ
intrinsic ≈ 0.02 dex (Ce, Eu, Ba σ
intrinsic > 0.05 dex). These results serve as a measure of the magnitude via which different elements trace Galactic radial enrichment history once fiducial supernovae correlations are accounted for. Furthermore, we uncover subtle systematic variations in moments of the conditional abundance distributions and bimodal differences in [Al/Fe]. These suggest a nonuniform enrichment of each chemical cell, and will presumably constrain chemical evolution models of the Galaxy.
X-Ray Morphology Due to Charge-exchange Emissions Used to Study the Global Structure around Mars
Authors: Liang G. Y. , Sun T. R. , Lu H. Y. , Zhu X. L. , Wu Y. , Li S. B. , Wei H. G. , Yuan D. W. , Zhong J. Y. , Cui W. , Ma X. W. , Zhao G.
Published: January 2023

Soft X-ray emissions induced by solar wind ions that collide with neutral material in the solar system have been detected around planets, and were proposed as a remote probe for solar wind interaction with the Martian exosphere. A multi-fluid three-dimensional magnetohydrodynamic model is adopted to derive the global distributions of solar wind particles. Spherically symmetric exospheric H, H2, He, O, and CO2 density profiles and a sophisticated hybrid model that includes charge-exchange and proton–neutral excitation processes are used to study the low triplet line ratio

G
=

i
+
f

r

(0.77 ± 0.58) of O vii and the total X-ray luminosity around Mars. We further calculate the emission factor α-value with different neutrals over wide ion-abundance and velocity ranges. Our results are in good agreement with those of previous reports. The evolution of the charge stage of solar wind ions shows that sequential recombination due to charge-exchange can be negligible in the interaction region. This only appears below an altitude of 400 km. The anonymous low disk G-ratio can be easily explained by the collisional quenching effect at neutral densities higher than 1011 cm−3. However, the quenching contribution is small in Mars’ exosphere and only appears below 400 km. Charge-exchange with H2 and N2 is still the most likely reason for this low G-ratio. X-ray emissivity maps in collisions with different neutrals differ from each other. A clear bow shock arising from the collision with all the neutrals is in accordance with previous reports. The resulting total X-ray luminosity of 6.55 MW shows better agreement with the XMM-Newton observation of 12.8 ± 1.4 MW than that of previous predictions.
Two new sympatric cave species of Castellanethes (Isopoda, Oniscidea, Olibrinidae) from Western High Atlas of Morocco
Authors: Moutaouakil Soumia , Boulanouar Mohamed , Ghamizi Mohamed , Lips Josiane , Ferreira Rodrigo Lopes
Published: January 2023

Two new sympatric isopod species of the genusCastellanethes(Olibrinidae) are described from caves located in the Western High Atlas of Morocco. Both species present troglomorphic traits, such as the absence of body pigmentation and eyes and are, therefore, considered cave-dwelling species (troglobitic).Castellenethes ougougensissp. nov.was found in five caves, whileC. ighousisp. nov.is an amphibious species found in only two caves, which also harbour populations ofC. ougougensissp. nov.Additionally, notes on their habitats are provided, as well as a discussion on their conservation status.
Onlife identity: The question of gender and age in teenagers' online behaviour
Authors: Serrate-González Sara , Sánchez-Rojo Alberto , Andrade-Silva Luis-E. , Muñoz-Rodríguez José-Manuel
Published: January 2023

The presence of cyberspace in the lives of young people is such that we can no longer distinguish between online and offline spheres. They live a process of onlife development that is not always equitable in terms of gender. This paper aims to account for the online behaviour of Spanish adolescents according to gender and age, the decisions they make when constructing their virtual identity, and the effects that this has on them. A quantitative study has been carried out at a national level (N=2,076, 12-18 years old) following a non-experimental ex post facto design by means of a survey study. The results show that there are gender differences in the preference for one or other social network. A high percentage of girls make different choices when it comes to their online presence. Unlike boys, girls state that their virtual self and their behaviour significantly influence the opinion that they have of themselves and their need to feel integrated. In conclusion, the decisions that adolescents make when creating their virtual selves do not only have negative consequences derived from poor management, but are also plagued by mandates and stereotypes that determine how they should be and what they should do online; something that is especially pressing for girls.

La presencia del ciberespacio en la vida juvenil es tal que ya no podemos distinguir los ámbitos online y offline, viviendo un proceso de desarrollo onlife no siempre equitativo en cuanto al género. Este trabajo pretende dar cuenta del comportamiento de los adolescentes españoles en la red en función del género y la edad, las decisiones que toman cuando construyen su identidad virtual y los efectos que tienen para ellos. Se ha realizado un estudio cuantitativo a nivel nacional (N=2.076, 12-18 años) en el marco de un diseño no experimental de tipo ex post facto a través del estudio de encuesta. Los resultados muestran que en la preferencia por unas u otras redes se observan diferencias de género, tomando decisiones totalmente diferentes a la hora de estar presentes en la red, y que un alto porcentaje de las chicas, a diferencia de los chicos, afirma que su yo virtual y los comportamientos asociados a su yo influyen significativamente en la opinión que tienen de sí mismas y en la necesidad que sienten por sentirse integradas. En conclusión, las decisiones que los adolescentes realizan a la hora de crear su yo virtual no solo tiene consecuencias negativas derivadas de una mala gestión, sino que está plagada de mandatos y estereotipos que determinan cómo deben ser y qué deben de hacer en la red; algo especialmente acuciante para las chicas.
Digital media use on school civic engagement: A parallel mediation model
Authors: Contreras Camila , Rivas Josefina , Franco Rosemberg , Gómez-Plata Maryluz , Luengo-Kanacri B. Paula
Published: January 2023

Despite the democratised access to digital media, there are still gaps in uses and opportunities according to age, sex, socioeconomic level, and location. In addition, the study about the use of digital media by children and adolescents has focused more on the risks than on the opportunities. This study analyses the relationship between different uses of digital media (socialisation, socio-political, and learning purposes), with school civic engagement. A sample of 524 students (Mage=12; 43.7% girls) from Santiago de Chile participated. Structural equation modelling with latent variables was used to test a parallel mediation model in which the use of socialisation in digital media is related to school civic engagement, through digital media use for socio political purposes and the digital media use for learning purposes. In addition, multigroup analysis by sex was tested. The main results showed that digital media use for socialisation has a positive effect on school civic engagement through the parallel mediation of digital media use for socio-political purposes and the digital media use for learning purposes. The multigroup analysis showed that mediation is significant in both boys and girls. The results have contributed to the expansion of knowledge about the opportunities of digital media on civic engagement in formal school contexts.

A pesar de la democratización del acceso a los medios digitales, siguen existiendo brechas en los usos y oportunidades según edad, género, nivel socioeconómico y localización. Además, estudios sobre usos de medios digitales por parte de niños y adolescentes se han centrado más en riesgos que en oportunidades. Este estudio analiza la relación entre los usos de los medios digitales (socialización, sociopolíticos y aprendizaje), y el compromiso cívico escolar. Participó una muestra de 524 estudiantes (Mage=12; 43,7% niñas) en Santiago de Chile. Se utilizó un modelo de ecuaciones estructurales con variables latentes para probar un modelo de mediación paralelo en el que el uso de los medios digitales para la socialización se relaciona con el compromiso cívico escolar, a través del uso de los medios digitales con fines sociopolíticos y el uso de los medios digitales con fines de aprendizaje. Finalmente, se realizó un análisis multigrupo por sexo. Los resultados mostraron que el uso de medios digitales para la socialización tiene un efecto positivo en el compromiso cívico escolar a través de la mediación paralela del uso de los medios digitales con fines sociopolíticos y el uso de los medios digitales con fines de aprendizaje. El análisis multigrupo mostró que la mediación es significativa tanto en hombres como mujeres. Los resultados amplían el conocimiento sobre las oportunidades de los medios digitales para el compromiso cívico en contextos escolares.
The student self-assessment paradigm in MOOC: An example in Chinese higher education
Authors: Duan Tingting , Wu Binghui
Published: January 2023

Although scholars have proposed many types of self-assessment methods. There are still many teachers in China who consider that student self-assessment is “difficult to implement”. This paper aims to optimize the assessment of MOOC learning, and to establish an integrated student self-assessment paradigm with “student-centered, teacher, and peer auxiliary”. We started by selecting nine key factors that influence the implementation of self-assessment in MOOCs. Then, we clarified the relationship between the nine factors by using the interpretative structure model (ISM) and the MICMAC analysis, and a six-level paradigm of integrated student self-assessment was established. Moreover, we put forward the following suggestions to optimize student self-assessment in MOOC learning. First, it’s necessary to consider student self-assessment in MOOCs as a formative assessment method. Second, universities should enhance student awareness of self-assessment through publicity. Third, institutions of higher education could set up assessment courses to enhance the quality of assessment of students. Fourth, schools should optimize the environment of student self-assessment with the help of technology. This study is of great significance for students to make self-assessment become the basis of online learning and thus perfect the research on MOOC learning.

Los estudios han propuesto varios tipos de métodos de autoevaluación, sin embargo, muchos profesores, en el país, todavía consideran que la autoevaluación de estudiantes es «difícil de implementar». El objetivo de este artículo es optimizar la evaluación del método MOOC y establecer un paradigma integrado de autoevaluación para los estudiantes, en base de «centrado en estudiantes, asistido por profesores y compañeros». Se han seleccionado nueve factores clave que influyen en la implementación de autoevaluación del MOOC, y sobre esta base, a través del modelo de estructura interpretativa ISM y el método de análisis MICMAC, se han definido las relaciones entre estos factores y se ha establecido un paradigma integrado de seis niveles de la autoevaluación de estudiantes. Además, se han dado unas proposiciones para optimizar la autoevaluación del MOOC. En primer lugar, se necesitan utilizar la autoevaluación del MOOC como un método de evaluación formativa. En segundo lugar, las universidades deberían, mediante la publicidad, aumentar la conciencia de los estudiantes sobre la autoevaluación. En tercer lugar, las universidades pueden ofrecer programas de evaluación para mejorar la calidad de la evaluación de los estudiantes. En cuarto lugar, se utilizan los medios tecnológicos para optimizar el entorno de autoevaluación de estudiantes. Este estudio es significativo para hacer la autoevaluación como una base del aprendizaje online, y así, promover los efectos del MOOC.
Les aspects économiques et financiers du post-Brexit : compétition et complémentarité
Authors: Musca Xavier
Published: January 2023

Il est difficile de distinguer les impacts économiques du Brexit de ceux de la pandémie. Néanmoins le PIB du Royaume-Uni (RU) se serait détérioré de 5,2 %. Les importations de l'Union européenne (UE) ont sensiblement baissé et le RU est devenu moins ouvert et moins compétitif à l'international. Il y a eu une forte inflation à la suite de la dépréciation de la livre en 2016 et une contraction des investissements liée à l'incertitude. Les effets du Brexit sont limités pour l'UE, économie beaucoup plus grande que le Royaume-Uni. Dans le secteur financier, le RU s'est retrouvé dans la situation d'un État tiers à l'Union sans passeport européen, soumis aux régimes d'équivalence réglementaire sectoriels. Les mouvements d'équipes de la City vers l'Union ont été assez limités (4 %). Londres garde des atouts, notamment ses infrastructures de marché comme les chambres de compensation, dont la substitution par des structures continentales est complexe. La concurrence réglementaire s'est peu matérialisée, mais pourrait s'intensifier par des adaptations rendant les réglementations britanniques plus efficientes sans affaiblir le cadre. Classification JEL : F36, F38, F65, G18, H07.
Les opportunités du Brexit ?
Authors: Liddle Roger
Published: January 2023

Ce que signifie le Brexit reste opaque et contesté. Dans l'immédiat, les relations entre le Royaume-Uni et l'UE dépendent de la résolution du différend sur le protocole d'Irlande du Nord, un pilier essentiel de l'accord de retrait de 2020. Sans accord mutuel, une confrontation majeure se profile. Les conséquences économiques du Brexit ont jusqu'à présent été négatives. Ses fervents défenseurs et l'électorat de plus en plus sont, pour des raisons opposées, déçus. Liz Truss, l'ancien Premier ministre britannique, visait une « nouvelle ère » de croissance économique, stimulée par un programme de droite de réductions d'impôts et de déréglementation, où « profiter des opportunités du Brexit » jouera, sans précision, un grand rôle. La façon dont cela fonctionnera dans la pratique est problématique. Une divergence rapide avec les règles de l'UE pourrait entraîner de nouvelles tensions en termes de « concurrence déloyale ». Pendant ce temps, le parti travailliste d'opposition a rejeté la réintégration dans l'UE, son marché unique ou son union douanière : pour de bonnes raisons électorales, Sir Keir Starmer est fermement opposé à la réouverture du débat sur le Brexit. Cependant, sa politique de « faire fonctionner le Brexit », bien que délibérément vague, laisse entrevoir la promesse d'une relation européenne plus coopérative. Classification JEL : F36, F38, F65, G18.
Prerationality as Avoiding Predictably Regrettable Consequences
Authors: Hammond Peter J.
Published: January 2023

À la suite de travaux antérieurs sur la théorie conséquentialiste de la décision, on considère un domaine non restreint d’arbres de décision finis, y compris les sous-arbres de continuation, qui peuvent avoir : 1) des nœuds de décision où le décideur doit agir ; 2) des nœuds aléatoires où une « loterie à la roulette » avec des probabilités antérieurement definies et strictement positives est résolue ; 3) des nœuds d’événements où une « course de cheval » est résolue. Une famille complète de relations de base conditionnelles binaires sur les conséquences des loteries d’Anscombe et Aumann est définie comme étant « prérationnelle » si et seulement s’il existe une règle de comportement qui est définie dans tout le domaine des arbres et qui s’explique comme évitant, dans toutes les circonstances prévisibles, des conséquences regrettables. Il est montré ici qu’une famille de relations de base est prérationnelle si et seulement si à la fois : 1) chaque relation est complète et transitive ; 2) chaque relation satisfait l’axiome d’indépendance de la théorie de l’utilité espérée ; 3) la famille entière satisfait une forme stricte de l’extension par Anscombe et Aumann du principe de la chose sûre de Savage. En supposant que les relations de base soient non triviales et qu’elles satisfassent une forme généralisée d’indépendance de l’état même si les domaines de conséquence en dépendent, la prérationalité combinée avec la continuité sur les triangles de Marschak est équivalente à l’existence d’une représentation par une classe de fonctions d’utilité espérée subjective dans lesquelles les probabilités sont toutes positives. JEL Codes: D81.
Curricular Integration of Virtual Reality in Nursing Education
Authors: Brown Kristen M. , Swoboda Sandra M. , Gilbert Gregory E. , Horvath Catherine , Sullivan Nancy
Published: January 2023

Aim:

The purpose of this article was to evaluate the ability of an interactive virtual reality (VR) platform guided by standards of best practice to provide an effective immersive learning environment. We specifically evaluated usability of the platform and learners' perceptions of the experience.

Background:

A variety of strategies are needed to train a highly competent nursing workforce. Methods: We conducted a quantitative cross-sectional study to evaluate the VR experience using the System Usability Scale (SUS)
®
and the Simulation Effectiveness Tool-Modified (SET-M).

Results:

Post-simulation evaluations were completed by 127 prelicensure and 28 advanced practice students. On the SUS scale, students found the overall VR system easy to navigate, and on the SET-M, they rated the VR experience positively.

Conclusion:

Immersive technology such as VR with a defined curriculum and facilitated debriefing can be valuable for student learning and may ultimately effect patient care.

[
J Nurs Educ
. 2023;62(6):364–373.]
Un ensemble funéraire de l’Antiquité tardive à dépôt atypique d’âne à Woippy (Moselle)
Authors: Brkojewitsch Gaël , Putelat Olivier
Published: January 2023

Le long de la grande voie romaine Metz/Divodurum-Trèves/Augusta Treverorum, un ensemble funéraire composé de huit sépultures a été implanté durant l’Antiquité tardive. Les tombes ont probablement été mises en place sur une ou deux générations entre les années 360 et 440. Les inhumés, de jeunes adultes ou des adultes, ont été, pour certains, déposés dans des coffres de bois assemblés, à l’intérieur de grandes fosses rectangulaires entraînant une décomposition des tissus dans un espace vide. L’organisation en travées est soignée avec une orientation méridienne assez stricte et parallèle à la chaussée romaine. Le mobilier se compose majoritairement de vaisselle en verre et dans une moindre mesure de vases en céramique et, dans deux cas, d’éléments de ceinturon qui sont disposés aux côtés du corps. Le dépôt d’un âne au sein de l’ensemble funéraire constitue le fait le plus atypique. Ce dernier, peut-être abattu à l’occasion d’une cérémonie, disposait lui aussi d’un mobilier d’accompagnement et s’intégrait parfaitement dans les travées que dessinaient les tombes. Il semble également que l’aire funéraire se soit développée autour d’une tombe hiérarchiquement plus élevée accueillant l’inhumation (no 1) d’un jeune adulte, probablement masculin. La dépouille était dotée de cinq objets qui placent cette tombe au-dessus de la moyenne du groupe sans toutefois surclasser l’ensemble. Le dépôt d’un âne dans la force de l’âge constitue un présent de taille dédié à ce personnage disposant d’un statut particulier dans le groupe. Plusieurs indices permettent en outre de rapprocher les deux éléments, notamment leur parfaite symétrie et les lots de céramique rugueuse de Speicher, absente des autres tombes. Dans la mesure où, chronologiquement, cette sépulture peut être située dans la phase d’occupation la plus haute de l’ensemble funéraire, entre 360 et 410 apr. J.-C., l’hypothèse d’une sépulture fondatrice accompagnée d’un dépôt d’équidé, autour de laquelle les autres sépultures sont venues s’agglomérer, est privilégiée.
Sociohistoire d’al-Yawm al-sābi‘ : une revue panarabe en exil (1984-1991)
Authors: Khalil Aya
Published: January 2023

Créée en 1984, la revue al-Yawm al-sābi‘ [Le Septième jour] diffusa depuis Paris 348 numéros à destination des capitales arabes en l’espace de six années et demi (de mai 1984 à janvier 1991). Elle représenta un moment phare de la vie intellectuelle arabe contemporaine, en tant qu’elle fut l’un de ses supports dans le contexte de reflux idéologique des années 1980. Espace de recomposition d’un réseau intellectuel et militant beyrouthin de gauche, la revue tire son succès à la fois du fort capital symbolique de ses contributeurs réguliers, à l’instar du poète Mahmoud Darwich, de l’étendue des pages consacrées à la question palestinienne et des débats politiques et intellectuels de haute volée dont elle fut le fer de lance. Lieu privilégié de circulation des idées arabistes et progressistes, l’hebdomadaire fut également un point de ralliement entre les intellectuels arabes du Maghreb et du Mashreq, autant qu’un point de passage entre la culture française et le monde arabe.
Introduction to Artificial Intelligence
Authors: Yohannes Sewit T. , Mansi Simar , Kaddoura Sanaa
Published: January 2023

Artificial intelligence (AI) has been a topic of high interest in this day and age. AI has emerged through the early nineties and continues to grow at an unprecedented rate. The idea of having machines that are able to process certain cognition to come to a decision without the intervention of humans is the ultimate idea that is being pursued. Though the stage in which AI is able to completely outperform humans in its cognitive skills is yet to be achieved, there has been remarkable progress towards that area. This chapter aims to provide a brief introduction about AI and the area covered under the topic. Various algorithms are used in programming AI on machines such as evolutionary algorithms, genetic algorithms, and swarm intelligence. AI encompasses machine learning, which will be further discussed in this chapter. Furthermore, the impact of AI on society and futuristic predictions the chapter reviews.
Artificial Intelligence in Navigation Systems
Authors: Nasserddine Ghalia , El Arid Amal A.
Published: January 2023

The computer-based navigation system computes the object's position, speed, and direction in real-time. In the last decades, many researchers, companies, and industries have been working on improving the existing navigation system due to its vast application in military and civilian activities. Typically, navigation systems are based on integrating inertial navigation systems and global positioning systems using a Bayesian filter, like the Kalman filter. The limitations of the Kalman filter have inspired researchers to consider alternatives based on artificial intelligence. Recently, many types of research have been developed to validate the possibility of using artificial intelligence methods in navigation systems. This chapter aims to review the integration of artificial intelligence techniques in navigation systems.
Convergence of Blockchain to Artificial Intelligence Applications
Authors: Alex Suja A. , Briyolan B. Gerald
Published: January 2023

In the era of modern technology, blockchain is out of harm's way in making proceedings ample of its reliability trademark, and chiefly for its immutability, and it doesn't hang on any mediator network while any transaction happens. The use of this technology helped solve many problems in society by detecting the problem which happens in the industry sphere, similarly trust, unambiguously, security, and reliability of statistics processing. The objective of the article is to review the blockchain technologies with the focus of reviewing blockchain in artificial intelligence (AI) applications. With the exception of cryptocurrency, blockchain technology can also avail oneself of financial and social services and healthcare facilities, which is risk-free.
A Transfer Learning Approach for Smart Home Application Based on Evolutionary Algorithms
Authors: Afif Mouna , Ayachi Riadh , Said Yahia , Atri Mohamed
Published: January 2023

Building new systems used for indoor sign recognition and indoor wayfinding assistance navigation, especially for blind and visually impaired persons, presents a very important task. Deep learning-based algorithms have revolutionized the computer vision and the artificial intelligence fields. Deep convolutional neural networks (DCNNs) are on the top of state-of-the-art algorithms which makes them very suitable to build new assistive technologies based on these architectures. Especially, the authors will develop a new indoor wayfinding assistance system using aging evolutionary algorithms AmoebaNet-A. The proposed system will be able to recognize a set of landmark signs highly recommended to assist blind and sighted persons to explore their surrounding environments. The experimental results have shown the high recognition performance results obtained by the developed work. The authors obtained a mean recognition rate for the four classes coming up to 93.46%.
Breast Cancer Prediction and Control Using BiLSTM and Two-Dimensional Convolutional Neural Network
Authors: Agana Moses A. , Agwu Chukwuemeka Odi , Ukpoho Nsinem A.
Published: January 2023

Breast cancer has a devastating effect on women. Different strategies of breast cancer classification exist with minimal work done on the prediction of the occurrence of the disease in potential carriers. In this study, a breast cancer predictive system has been developed using bidirectional long short-term memory (BiLSTM) for feature extraction and learning while the two-dimensional convolutional neural network (CNN) was used for breast cancer classification. Histopathological images were used for cancer prediction. Python was used as the programming language for implementing the system. The model was tested using datasets from The Cancer Imaging Archive (TCIA) repository. An accuracy level of 98.8% (higher than the most recent existing model) was achieved for the prediction of the future occurrence of breast cancer based on the tests on the dataset. The application of the model using live data from women can help in the prediction and control of the occurrence of breast cancer amongst women.
Study on the Technology of Preparing Ceramsite from Coal Gangue
Authors: Zhang Dong Liang , Liu Yue , Song Jie Guang , Wen Hong Bin , Huang Rong , Li Zhen Kai , Hu Xin Yi
Published: January 2023

China's coal resources are extremely rich, and the degree of coal mining is high. During the formation of coal, a large amount of coal gangue will be produced, which not only accumulates land and wastes resources, but may also cause natural disasters such as fires. In this paper, coal gangue is used as the main raw material, and a certain amount of kaolin, steel slag and other auxiliary materials are added to prepare coal gangue ceramsite through a high-temperature sintering process. The research results show that as the sintering temperature increases, the porosity of the ceramsite decreases first. After increasing, the water absorption rate of ceramsite also decreases first and then increases with the increase of the firing temperature, while the compressive strength first decreases and then increases with the increase of temperature. With the increase of the holding time, the porosity of the ceramsite first decreases and then increases. The water absorption rate of the ceramsite also first decreases and then increases with the increase of the firing temperature, while the compressive strength decreases first and then increases with the increase of the temperature. Elevated. With the increase of coal gangue content, the porosity of ceramsite gradually decreases, the water absorption rate of ceramsite also gradually decreases, and the compressive strength gradually increases with the increase of coal gangue content. The optimization can be obtained, the coal gangue content (mass fraction) is 100%, the calcination process system is 1200°C, and the heat preservation time is 60min as the better parameters. At this time, the compressive strength is 29.57MPa and the porosity is 4.36%.
The Ability of ZnFe2O4 Nanostructure as Electromagnetic Wave Absorber in Frequency Range 2-18 GHz
Authors: Izaak Maya Puspitasari , Gunanto Yohanes Edi , Sitompul Henni , Sarwanto Yosef , Ari Adi Wisnu
Published: January 2023

ZnFe2O4 nanomaterials were prepared using a solid-state reaction method using high energy milling (750 rpm) for 30 hours and calcined at 1000°C for 5 hours. The characterizations used include XRD, SEM, VSM, and VNA. The measurement results show that the sample has a single phase with a cubic structure. The surface morphology of heterogeneous samples with a particle size of 250-400 nm shows magnetic performance with Ms 2.38 emu/g and Hc 11.29 kOe. The sample also can absorb electromagnetic waves in the frequency range of 2-18 GHz with a minimum RL value of ~-18.79 dB at a frequency of 3.66 GHz, while RL ~-13.32 dB has a bandwidth of 0.9 GHz.
Manufacturing and Characterization of Polymer Concrete with Aggregate from Sand, Egg Shell and Sugarcane Waste with Epoxy Resin Binder as Sound Absorber
Authors: Fauzi Fauzi , Hakim Lukman , Simbolon Tua Raja
Published: January 2023

Environmentally friendly polymer concrete by utilizing waste has been widely developed, one of which is sugarcane fiber waste and egg shell powder. Utilization of this waste is not optimal, for that by being used as a filler in polymer concrete, it is expected that it will have a higher economic value. This study was to determine the composition of the epoxy resin binder and the mechanical characteristics of polymer concrete fabricated using sugarcane fiber waste with an epoxy resin adhesive. Variations in composition made of sand, egg shells (1 : 1) or (50 g : 50g), bagasse waste 0%, 1%, 2%, 3%, 4% and 5% of the total weight. Epoxy resin composition variation of 20%, 25% and 30% of the total weight of sand and egg shells. Then carried out the characteristics in the form of density test, water absorption, porosity, compressive strength and tensile strength. From the test results, the characteristics of polymer concrete have optimum values, namely density (1.76 g/cm3), water absorption (4.04%), porosity (5,252%), compressive strength (26,27 MPa), tensile strength (4,06 MPa). Of the three samples, the best in the A5 sample with a sound absorption coefficient of 0.237 met the requirements of ISO and ASTM C.384.
The Effect of Drying Temperature Variations of Biodegradable Plastic Porang (Amorphophallus oncophyllus) with Glycerol Plasticizer on Mechanical and Thermal Properties
Authors: Maghfirah Awan , Sudiati Sudiati , Sofyan Muhammad Zaidun , Hia Yoseva , Damanik Nurul Adila
Published: January 2023

Plastic packaging that is often used is not biodegradable. One way to overcome this is to replace it with materials that are environmentally friendly and safe for health, namely biodegradable plastics with high mechanical properties, where the mechanical properties are affected by the drying temperature. Research has been carried out on biodegradable plastics from porang starch and chitosan with glycerol plasticizer at various drying temperatures starting from 60°C, 70°C, 80°C, 90°C, and 100°C. The best mechanical characterization results, namely (temperature 70°C, glycerol 60%) showed a tensile strength of 0.32 MPa and elongation of 106.97%, (temperature 90°C, glycerol 80%) showed a tensile strength of 0.565 MPa and an elongation of 127.13%, and (temperature 90°C, 100% glycerol) showed a tensile strength of 0.447 MPa and an elongation of 194.94% and then tested for thermal properties with TGA-DTA, analyzed morphology with SEM, and analyzed functional groups with FTIR.
The Effect of NaF on the Photoluminence Properties of Sammarium Ion Doped on Fluoro-Borophosphate Glass Medium
Authors: Panggabean Jonny Haratua , Rajagukguk Juniastel , Rajagukguk Donna Helen , Silitonga Adri , Sarumaha Chayani S. , Kaewkhao Jakrapong
Published: January 2023

Fluoro-borophosphate glass containing Natrium Fluoride (NaF) doped with Samarium ion 1 mol% concentration. The glass compositions based on 49P2O5-5B2O3-15ZnO-15Li2O-15NaF-1Sm2O3 are prepared by melting and quenched technique. The optical and photoluminescence were obtained from the UV-Vis-NIR spectrophotometer and spectrofluorophotometer. The ground state 6H5/2 as the start transition in the absorption spectrum and the Judd-Ofelt intensity parameters (2, 4, and 6) were determined. The emission spectra of borophosphate glass with NaF were recorded at an excitation of 401 nm which gave four peaks namely 6H5/2, 6H7/2, 6H9/2, and 6H11/2..
Fe3O4 Nanoparticles Prepared by Coprecipitations Method for Hyperthermia Therapy
Authors: Wulandari Retno Fitri , Paradita Dhea , Mufti Nandang , Abadi M. Tommy Hasan , Taufiq Ahmad , Mujamilah Mujamilah
Published: January 2023

Magnetic nanoparticles (Fe3O4) have considerable attention in various biomedical applications such as biosensors, drug delivery systems in the body, magnetic resonance imaging (MRI), and hyperthermia therapy. Hyperthermia therapy uses heat controlled by applied AC (Alternating Current) magnetic to kill cancer cells. This research aims to determine the effect of changes in temperature caused by the AC magnetic field on the varied magnetic nanoparticle solution. The Synthesize of Fe3O4 used the coprecipitation method to produce Fe3O4 nanoparticles. Mass of Fe3O4 nanoparticles varied of 95 mg and 125 mg. Nanoparticles physical properties were characterized using X-ray diffraction (XRD), Scanning Electron Microscope (SEM), and vibrating sample magnetometer (VSM). XRD profiles indicated that magnetic (Fe3O4) nanoparticles were successfully synthesized with a crystal size of 7.76 nm. SEM characterization of Fe3O4 nanoparticles was carried out at a magnification of 150.000 times and the average diameter of Fe3O4 powder nanoparticles was 20 nm. The temperature change measurement was performed using an AC magnetic field of 2.8 mT and frequency of 343 Hz, and time recorded changes temperature in 660 seconds. The temperature changes for solution concentrations of 95 mg and 125 mg were 7.7°C and 9.8°C, respectively. the concentration of solutions affects the value of the Specific Absorption Rate (SAR). The SAR values of each concentration of Fe3O4 solution were 0,0069 W/g and 0.0096 W/g. It proves that Fe3O3 prepared by coprecipitation method has potential for hyperthermia therapy application.
Photocatalytic Removal of Methylene Blue Dye Using CoZnFe2O4/SiO2 Magnetic Nanoparticles
Authors: Istiqomah Nurul Imani , Larasati Dyah Ayu , Hanifah Aprinanda Nafla Aulia , Olivia Lusiana , Oshima Daiki , Kato Takeshi , Suharyadi Edi
Published: January 2023

The magnetic photocatalyst of CoZnFe2O4/SiO2 nanoparticles has been synthesised to degrade methylene blue (MB) dye. The CoZnFe2O4 nanoparticles were prepared by co-precipitation method under mechanical stirring and coated with SiO2 by stöber method using Na2SiO2 with various concentrations of 5%, 10%, 15%, 20%, 30%, and 50%. The properties of CoZnFe2O4/SiO2 was confirmed by x-ray diffraction (XRD), Fourier transforms infrared (FTIR), vibrating sample magnetometer (VSM), and UV-Visible spectroscopy. XRD analysis revealed that CoZnFe2O4 had the spinel ferrite phase structure with crystalite size of 17.0 nm, and then after coating with SiO2, the size became 17.1 nm. FTIR clearly show an M-O octahedral vibrational bond found with a wavelength of 378 cm-1, O-Si-O, Si-OH, and Si-O-Fe at 1087, 794, and 570 cm-1, respectively. The saturation magnetization (Ms) and coercivity of CoZnFe2O4/SiO2 was 29.0 emu/g and 251.9 Oe, respectively. Furthermore, the results of UV-Visible data presented that the absorption edges CoZnFe2O4/SiO2 in the range of 190 - 600 nm. The percentage of CoZnFe2O4 degradation is 88.4%, while after coted SiO2 50%, the degradation becomes 98.9%.
Annealing Temperature Dependent of the Structural and Magnetic Properties in Hematite Prepared by Sol-Gel Method
Authors: Hakim Ananda Sholeh Rifky , Utari Utari , Suharno Suharno , Purnama Budi
Published: January 2023

The annealing temperature dependent on the structural and magnetic properties of hematite (α-Fe2O3) powders synthesized via the sol-gel method was studied. The sol-gel method is used to prepare nanoparticles for this experiment. The annealing treatment of 200°C, 400°C, 600°C, and 800°C has been carried out to modify the physical properties. The obtained nanoparticles are characterized by their structural properties using X-ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy. Then, magnetic properties were evaluated using Vibrating Sample Magnetometer (VSM). XRD results have shown an increase in crystallite size with an increase in annealing temperature from 35.10 nm to 60.17 nm. The increase in crystallite size can be attributed to the increase in the crystal structure’s internal energy, which promotes atomic diffusion. The FTIR results show an absorption that appears at the peak around ~530 cm-1. It indicates that the Fe3+ cation has successfully formed. The VSM results show an increase in the value of Hc with an increase in the annealing temperature from 117 Oe to 461.5 Oe. It is supported by the increase of anisotropy constant and increasing temperature annealing.
Phase Composition, Crystal Structure and Microwave Dielectric Properties of Nb-Doped Yttrium Aluminum Garnet Ceramics
Authors: Zhou Mo Ke , Zhang Shu Ren , Tang Bin
Published: January 2023

The Y3Al5-xNbxO12 (0 ≤ x ≤ 0.06) garnet ceramics were prepared by solid-state reaction method. The effects of Nb5+ substitution on the phase composition, microstructure and microwave dielectric properties were investigated. All samples retained the yttrium-aluminum garnet solid solution form until x up to 0.06 at which YNbO4 secondary phase precipitated. The doping of Nb2O5 improved the grain development and enhanced the physical properties of the ceramics under the sintering condition of 8 h at 1700 °C. Specifically, with the substitution of Nb5+, the degree of micromorphology improvement and quality factor first increased and then decreased, with a maximum value at x = 0.015. Finally, the best combination of microwave dielectric properties was obtained, i.e., εr = 10.79, Q×f = 165,478 GHz, τf = -31.7 ppm/°C. This study provides a theoretical basis for the further expansion and application of yttrium aluminum garnet in the microwave field. Keywords: Yttrium Aluminum Garnet ceramics, Nb2O5, microwave dielectric properties.
Exploratory analysis of the suitability of data from the civil registration system for estimating excess mortality due to COVID-19 in Faridabad district of India
Authors: Gupta Ayon , Asadullah Md , Kumar Rakesh , Krishnan Anand
Published: January 2023

Background & objectives:

Due to shortcomings in death registration and medical certification, the excess death approach is recommended for COVID-19 mortality burden estimation. In this study the data from the civil registration system (CRS) from one district in India was explored for its suitability in the estimation of excess deaths, both directly and indirectly attributable to COVID-19.

Methods:

All deaths registered on the CRS portal at the selected registrar’s office of Faridabad district in Haryana between January 2016 and September 2021 were included. The deaths registered in 2020 and 2021 were compared to previous years (2016-2019), and excess mortality in both years was estimated by gender and age groups as the difference between the registered deaths and historical average month wise during 2016-2019 using three approaches – mean and 95 per cent confidence interval, FORECAST.ETS function in Microsoft Excel and linear regression. To assess the completeness of registration in the district, 150 deaths were sampled from crematoria and graveyards during 2020 and checked for registration in the CRS portal. Agreement in the cause of death (CoD) in CRS with the International Classification of Diseases-10 codes assigned for a subset of 585 deaths after verbal autopsy was calculated.

Results:

A total of 7017 deaths were registered in 2020, whereas 6792 deaths were registered till 30 September 2021 which represent a 9 and 44 per cent increase, respectively, from the historical average for that period. The highest increase was seen in the age group >60 yr (19% in 2020 and 56% in 2021). All deaths identified in crematoria and graveyards in 2020 had been registered. Observed peaks of all-cause excess deaths corresponded temporally and in magnitude to infection surges in the district. All three approaches gave overlapping estimates of the ratio of excess mortality to reported COVID-19 deaths of 1.8-4 in 2020 and 10.9-13.9 in 2021. There was poor agreement (κ<0.4) between CoD in CRS and that assigned after physician review for most causes, except tuberculosis and injuries.

Interpretation & conclusions:

CRS data, despite the limitations, appeared to be appropriate for all-cause excess mortality estimation by age and sex but not by cause. There was an increase in death registration in 2020 and 2021 in the district.