bluuebunny/crossref_metadata_2025 huggingface dataset:
On the History of Publication of Ju. Krizhanich's Treatise “Politics’. An Unfinished Work by P. A. Bessonov
Authors:   Institute of World History of the Russian Academy of Sciences, Youssim Mark A. , Savelier Oksana V. ,   Institute of World History of the Russian Academy of Sciences
Published: February 2024

The article is devoted to the history of publication of the well-known manuscript "Politica" (Razgowory ob wladatelystwu) by Jury Krizanich, a Croatian, a Catholic priest and a supporter of Slavic unity. This work, written by Krizanich in exile in Siberia (Tobolsk, 1663-1666), contains advice on statecraft and criticisms of political "heresies," all tangled with the Russian realities. P. A. Bessonov first started to edit this manuscript in 1859 — 1860, but he published only 3/5 of the text in two volumes. Later attempts to complete the publication were made repeatedly: P. A. Bessonov himself intended to do it, and independently of him the members of the Society of History and Antiquities of Russia (OIDR) within the framework of the first three issues of the Collected Works of Y. Krizhanich published in 1891 — 1893 (the Politics was not included in them). Of the other editions, the most important was the reproduction in 1965 of the first part of the text with a Russian translation, which gained popularity as a separate treatise. Nevertheless, to this day about a third of the manuscript, written mostly in Latin, remains known only from quotations and selected extracts. Here we offer for publication the beginning of the transcribed Latin text prepared by P. A. Bessonov for edition in the third part of his work, but remaining in the manuscript, and the fragments of the Russian translation supplemented by us. These passages give an idea of P. A. Bessonov's method of work and the nature of those sections of Krizhanich's work that are still not accessible to readers.
Factors associated with biliary atresia in children with cholestasis in Surabaya
Authors:   Department of Pediatrics, Faculty of Medicine, Universitas Airlangga/Dr. Soetomo, Surabaya, Indonesia, Yana Fina Yusriy , Prihaningtyas Rendi Aji ,   Department of Pediatrics, Faculty of Medicine, Universitas Airlangga/Dr. Soetomo, Surabaya, Indonesia, Arief Sjamsul ,   Department of Pediatrics, Faculty of Medicine, Universitas Airlangga/Dr. Soetomo, Surabaya, Indonesia, Setyoboedi Bagus ,   Department of Pediatrics, Faculty of Medicine, Universitas Airlangga/Dr. Soetomo, Surabaya, Indonesia
Published: February 2024

Introduction. Biliary atresia (BA) represents a progressive and obstructive fibrotic cholangiopathy, serving as a leading cause of liver failure and pediatric liver transplantation worldwide. Identifying risk factors associated with BA incidence is crucial for expediting diagnosis; however, limited research has been conducted in Indonesia. This study aims to investigate the characteristics and analyze the factors associated with the occurrence of BA. Methods. A retrospective observational analysis of medical records encompassing 523 cholestatic patients at the Pediatric Hepatology Outpatient Department and Pediatric Ward of Dr. Soetomo General Academic Hospital, Surabaya, from 2011 to 2022 was conducted. The data was segregated into BA and non-BA groups, and diagnostic chi-square tests were employed to determine interrelationships among variables. Subsequently, logistic regression analysis was performed to identify the most impactful variable. Results. Notably, age at first time visiting specialist (p = 0.003), gestational age (p <0.001), birth weight (p = 0.039), and domicile (p = 0.028) exhibited substantial associations with BA. Moreover, gestational age emerged as the most influential factor (p = 0.004). Infants with normal birth weight (≥2,500 grams) exhibited strongest factor associated factor of BA cholestasis. Conclusion. Initial specialist consultations were predominantly observed within the 0-6 months age range, while term infant and normal birth weight were linked to a higher likelihood of BA cholestasis. Residence in rural areas exhibited a significant correlation with BA incidence.
Utilization of Agricultural By-Products as a Partial Replacement of Cement in Construction: A Review
Authors: Sobti Dr.Jaskiran , Bali Amanpreet Kour
Published: February 2024

Food and Shelter are the two main requirements for surviving in this cosmos. More than 50% of the geographical area of the country is under cultivation. After harvesting the rice crop there is a common practice to set fields on fire. This stubble burning creates havoc causing a large number of health hazards and also affects the soil properties. This method of decomposition of agricultural residue including rice straw and rice husk if replaced with some standard combustion conditions, temperature, and rapid cooling of ash produced, will prove beneficial to the construction industry. This review paper explores the possibility of utilizing these agricultural waste products i.e. Rice Straw Ash (RSA) and Rice Husk Ash (RHA) as a partial replacement of cement in concrete and analyzing the fresh and hardened properties of concrete. Research gaps and future scope of this study are also highlighted in this review paper. It has been observed that the physical, chemical, and strength properties of concrete are mostly affected by the pozzolan city of the ashes and compressive strength and tensile strength of concrete increases with increase in replacement level of cement with the agricultural ash up-to certain optimal levels. Various other factors that contribute to the enrichment of the existing properties of the resulting concrete include grinding, fineness and porosity of ashes.
In memoriam: Tribute to Professor Vanessa Watson 1950-2021
Authors: Mabin Alan
Published: February 2024

Professor Vanessa Watson lost a bravely fought battle with cancer on 15 September 2021. Widely recognised for her contributions to scholarship, planning education, and community commitment, she is deeply mourned. Up until some months prior to her death, despite serious illness and often debilitating treatment, she remained in a full-time position as professor at the University of Cape Town (UCT).
Gas-phase Molecules in Protoplanetary Nebulae with the 21 μm Emission Feature
Authors: Qiu 邱 Jian-Jie 建杰 , Zhang 张 Yong 泳 , Nakashima Jun-ichi , Zhang Jiang-Shui , Li Fei , Lu Deng-Rong , Tang Xin-Di , Yu Xiao-Ling , Jia Lan-Wei
Published: February 2024

It has been more than 30 years since the enigmatic 21 μm emission feature was first discovered in protoplanetary nebulae (PPNs). Although dozens of different dust carrier candidates have been proposed, there is as yet no widely accepted one. We present the results of molecular observations toward 21 μm objects using the 10 m Submillimeter Telescope of Arizona Radio Observatory in the 1.3 mm band and the 13.7 m telescope of Purple Mountain Observatory in the 3 mm band, aiming to investigate whether the gas-phase environments of these unusual sources have some peculiarities compared to normal PPNs. We detect 31 emission lines belonging to seven different molecular species, most of which are the first detection in 21 μm PPNs. The observations provide clues to the identification of the 21 μm feature. We report a correlation study between the fractional abundance of gas-phase molecules and the strengths of the 21 μm emission. Our study shows that, given the small sample size, the 21 μm feature has weak or no correlations with the gas-phase molecules. Future radio observations of high spatial and spectral resolution toward a large sample are desirable to elucidate the 21 μm emission phenomena.
Spectroscopic r-process Abundance Retrieval for Kilonovae. II. Lanthanides in the Inferred Abundance Patterns of Multicomponent Ejecta from the GW170817 Kilonova
Authors: Vieira Nicholas , Ruan John J. , Haggard Daryl , Ford Nicole M. , Drout Maria R. , Fernández Rodrigo
Published: February 2024

In kilonovae, freshly synthesized r-process elements imprint features on optical spectra, as observed in AT2017gfo, the counterpart to the GW170817 binary neutron star merger. However, measuring the r-process compositions of the merger ejecta is computationally challenging. Vieira et al. introduced Spectroscopic r-process Abundance Retrieval for Kilonovae (SPARK), a software tool to infer elemental abundance patterns of the ejecta and associate spectral features with particular species. Previously, we applied SPARK to the 1.4-day spectrum of AT2017gfo and inferred its abundance pattern for the first time, characterized by electron fraction Y

e
= 0.31, a substantial abundance of strontium, and a dearth of lanthanides and heavier elements. This ejecta is consistent with wind from a remnant hypermassive neutron star and/or accretion disk. We now extend our inference to spectra at 2.4 and 3.4 days and test the need for multicomponent ejecta, where we stratify the ejecta in composition. The ejecta at 1.4 and 2.4 days is described by the same single blue component. At 3.4 days, a new redder component with lower Y

e
= 0.16 and a significant abundance of lanthanides emerges. This new redder component is consistent with dynamical ejecta and/or neutron-rich ejecta from a magnetized accretion disk. As expected from photometric modeling, this component emerges as the ejecta expands, the photosphere recedes, and the earlier bluer component dims. At 3.4 days, we find an ensemble of lanthanides, with the presence of cerium most concrete. This presence of lanthanides has important implications for the contribution of kilonovae to the r-process abundances observed in the Universe.
Molecular Deuterations in Massive Starless Clump Candidates
Authors: Yang Kai , Wang Junzhi , Qiu Keping , Zhang Tianwei
Published: February 2024

Deuterated molecules are valuable probes for investigating the evolution and the kinematics in the earliest stages of star formation. In this study, we conduct a comprehensive investigation by performing a single-point survey of 101 starless clump candidates, and carrying out on-the-fly (OTF) observations of 11 selected sources, focusing on deuterated molecular lines using the IRAM 30 m telescope. In the single-point observation, we make 46 detections for DCO+
J = 1−0, 12 for DCN J = 1−0, 51 for DNC J = 1−0, 7 for N2D+
J = 1−0, 20 for DCO+
J = 2−1, and 10 for DCN J = 2−1. The starless clump candidates with deuterated molecule detections exhibit lower median kinetic temperatures and a narrower H2CO (1(0,1)−0(0,0)) median full width at half maximum compared to those without such detections, while simultaneously displaying similar median values of 1.1 mm intensity, mass, and distance. Furthermore, our OTF observations reveal that deuterated molecules predominantly have peaks near the 1.1 mm continuum peaks, with the DCO+
J = 1−0 emission demonstrating higher intensity in the deuterated peak region compared to the DCN and DNC J = 1−0 emissions. Additionally, the majority of emissions from deuterated molecules and 13C isotopologues exhibit peak positions close to those of the 1.1 mm continuum peaks. By analyzing the 20″ × 20″ regions with strongest deuterated emissions in the OTF observations, we estimated deuterated abundances of 0.004−0.045, 0.011−0.040, and 0.004−0.038 for D
frac(HCN), D
frac(HCO+), and D
frac(HNC), respectively. The differential detection of deuterated molecular lines in our OTF observations could be attributed to variations in critical densities and formation pathways.
At a crossroads: Genetic lineages and dispersal routes of Morimus asper (Sulzer, 1776) s.l. (Coleoptera, Cerambycidae) in Bulgaria
Authors: Kostova Rumyana , Borissov Simeon , Bobeva Aneliya , Bekchiev Rostislav
Published: February 2024

The present study fills a knowledge gap in the distribution and genetic variation of Morimus populations in the Balkans, by studiyng the representatives of the genus in Bulgaria – M. asper funereus Mulsant, 1862, M. verecundus bulgaricus Danilevsky, 2016 and M. orientalis Reitter, 1894. Additional information is provided for Albania and northern Greece. The mitochondrial cytochrome C oxidase subunit I (COI) marker and the nuclear internal transcribed spacer 2 (ITS2) were used for the genetic analyses. Three of the previously-defined mitochondrial lineages (Lb/HgA, L2 and L3) were detected in Bulgaria, as well as a new lineage (Str) from the Strandzha Mountains (south-eastern Bulgaria). A total of 24 distinct haplotypes, 20 of them in Bulgaria, were found. Bulgarian populations of Morimus demonstrated relatively high nucleotide diversity. The L3 COI lineage was confirmed as the most diverse and frequent in the Balkans. The L3 lineage is dominant in most of Bulgaria, but was not identified in the easternmost parts near the Black Sea coast, where the L2 and Str lineages were found. New data highlighted two dispersal routes of the L2 mitochondrial lineage on the Balkan Peninsula: 1) northwards along the Black Sea coast and 2) westwards, across the Balkans where only disjunct populations remain. North-western Bulgaria seems to be the eastern limit of the basal lineage Lb/HgA distribution. Our results show high levels of genetic exchange between most of the mitochondrially defined lineages, yet some of the easternmost populations probably remained isolated for comparatively longer periods.
New species of Tropicoporus (Basidiomycota, Hymenochaetales, Hymenochaetaceae) from India, with a key to Afro-Asian Tropicoporus species
Authors: Gunaseelan Sugantha , Kezo Kezhocuyi , Karunarathna Samantha C. , Yang Erfu , Zhao Changlin , Elgorban Abdallah M. , Tibpromma Saowaluck , Kaliyaperumal Malarvizhi
Published: February 2024

The Inonotus linteus complex, predominantly reported from East Asia, Mesoamerica and Caribbean countries, was circumscribed into Tropicoporus as one of the new genera, based on morphological and phylogenetic data. The present paper describes four new species of Tropicoporus from India. Morphological characteristics and phylogenetic analyses, based on ITS and nLSU data, delimited the new species, which are named T. cleistanthicola, T. indicus, T. pseudoindicus and T. tamilnaduensis. The pairwise homoplasy index (PHI) test was done to confirm the distinctive nature of the new species. The traits of Indian species remain distinct from one another, except for the pileate basidiome with the mono-dimitic hyphal system, cystidioles and broadly ellipsoid basidiospores. Descriptions, illustrations, PHI test results and a phylogenetic tree to show the position of the new species are provided. In addition, an identification key to Tropicoporus in Asia and an African species is given.
Contraction of variational principle and optical soliton solutions for two models of nonlinear Schrödinger equation with polynomial law nonlinearity
Authors: Seadawy Aly R. , Alsaedi Bayan
Published: February 2024

Our study analyzes the two models of the nonlinear Schrödinger equation (NLSE) with polynomial law nonlinearity by powerful and comprehensible techniques, such as the variational principle method and the amplitude ansatz method. We will derive the functional integral and the Lagrangian of these equations, which illustrate the system's dynamic. The solutions of these models will be extracted by selecting the trial ansatz functions based on the Jost linear functions, which are continuous at all intervals. We start with the Jost function that has been approximated by a piecewise linear function with a single nontrivial variational parameter in three cases from a region of a rectangular box, then use this trial function to obtain the functional integral and the Lagrangian of the system without any loss. After that, we approximate this trial function by piecewise linear ansatz function in two cases of the two-box potential, then approximate it by quadratic polynomials with two free parameters rather than a piecewise linear ansatz function, and finally, will be approximated by the tanh function. Also, we utilize the amplitude ansatz method to extract the new solitary wave solutions of the proposed equations that contain bright soliton, dark soliton, bright-dark solitary wave solutions, rational dark-bright solutions, and periodic solitary wave solutions. Furthermore, conditions for the stability of the solutions will be submitted. These answers are crucial in applied science and engineering and will be introduced through various graphs such as 2D, 3D, and contour plots.
Some congruences for $ \ell $-regular partitions with certain restrictions
Authors: Yu JingJun
Published: February 2024

Let $ {\rm{pod}}_\ell(n) $ and $ {\rm{ped}}_\ell(n) $ denote the number of $ \ell $-regular partitions of a positive integer $ n $ into distinct odd parts and the number of $ \ell $-regular partitions of a positive integer $ n $ into distinct even parts, respectively. Our first goal in this note was to prove two congruence relations for $ {\rm{pod}}_\ell(n) $. Furthermore, we found a formula for the action of the Hecke operator on a class of eta-quotients. As two applications of this result, we obtained two infinite families of congruence relations for $ {\rm pod}_5(n) $. We also proved a congruence relation for $ {\rm{ped}}_\ell(n) $. In particular, we established a congruence relation modulo 2 connecting $ {\rm{pod}}_\ell(n) $ and $ {\rm{ped}}_\ell(n) $.
Synchronization of inertial complex-valued memristor-based neural networks with time-varying delays
Authors: Wang Pan , Li Xuechen , Zheng Qianqian
Published: February 2024

The synchronization of inertial complex-valued memristor-based neural networks (ICVMNNs) with time-varying delays was explored in the paper with the non-separation and non-reduced approach. Sufficient conditions required for the exponential synchronization of the ICVMNNs were identified with the construction of comprehensive Lyapunov functions and the design of a novel control scheme. The adaptive synchronization was also investigated based on the derived results, which is easier to implement in practice. What's more, a numerical example that verifies the obtained results was presented.
Psychotropes et hystérie à la Salpêtrière, le cas de Célina Marcil (1870-1879)
Authors: Dubus Zoë
Published: February 2024

Célina Marcil…, blanchisseuse de 27 ans, est internée depuis 1867 à la Salpêtrière. Diagnostiquée hystérique, souffrant de vaginisme, elle subit des attaques extrêmement violentes. Afin de la soulager et s’assurer ainsi du calme de leur service, les aliénistes de l’hôpital ont alors pour habitude de fournir généreusement des sédatifs tels que l’éther ou la morphine à leurs patientes. Ses médecins lui administrent donc de fortes doses de psychotropes qui exacerbent ses délires érotiques, minutieusement retranscrits dans l’étude de cas qui lui est consacrée. Au sein d’une institution coercitive et face au regard libidineux que le personnel médical pose sur elle, Célina Marcil fait néanmoins preuve d’une certaine capacité d’agir. Réclamant jusqu’à la violence que ses médecins lui fournissent les quantités d’éther ou de morphine désirées, se servant d’eux pour intensifier ses réactions voluptueuses, utilisant l’éther pour parvenir à la jouissance sexuelle impossible à atteindre avec son amant, la jeune femme parvient un temps à s’adapter à sa condition.
L’architecte et son donjon
Authors: Curien Emeline
Published: February 2024

Bernard Herbecq réalise entre 1996 et 2000 un immeuble de logements qu’il qualifie de « donjon ». La manière dont les éaléments qui constituent l’édifice sont assemblés, la convocation de formes anthropomorphiques, l’évocation de références inscrites dans la mémoire collective confèrent à cette construction une présence particulière. Au travers des portraits du « donjon », de l’architecte mais aussi, en creux, de la chercheuse qui pose à l’objet ses propres questions, il s’agit de s’intéresser aux enjeux anthropologiques d’une architecture dite « expressionniste », et à la manière dont l’exercice du portrait – lieu d’une rencontre engagée entre un objet et un auteur – permet de les restituer.
Envisagement
Authors: Dehais Dominique
Published: February 2024

Le portrait, qu’il soit peint, photographique ou dessiné, est étroitement lié à l’avènement de l’image en Occident chrétien. De l’imago à l’icône puis de la peinture classique à la photographie, le statut du visage inscrit son empreinte dans la matière des artefacts. Ce qui se représente alors dans cette trajectoire historique serait le long procès de l’envisagement comme figure d’autonomie du sujet moderne dans l’autoportrait. Le destin paradoxal de cette « conquête de soi » s’exprime aujourd’hui dans la pratique mondialisée du selfie. Action d’émancipation aux modes de représentations ou d’aliénations à des visibilités hégémoniques ? Le selfie bouleverse-t-il la notion d’image et sa capacité à témoigner d’une réalité ? Que raconte ce nouveau régime de la figure numérique ?
Le visage, emblème et énigme de notre relation à l’autre
Authors: Le Breton David , Apolonio Laura
Published: February 2024

Nous proposons ici un entretien avec l’anthropologue David Le Breton sur son dernier ouvrage Des visages, une anthropologie (2022) pour approfondir l’ambivalence du visage, qui représente l’énigme de notre rapport à l’altérité, son côté sacré, le respect et la vénération d’autrui et, aux antipodes, sa profanation, le rejet de l’autre, la stigmatisation, le racisme. Dans cette rencontre avec le visage de l’autre se joue l’essentiel de notre humanité. C’est là que commence le dialogue avec l’Autre, notre responsabilité envers autrui, et que se construisent les significations sociales. Le visage est le lieu à la fois de l’individualisation extrême et de la socialisation. Il est identité et altérité. Avec David Le Breton nous analyserons l’histoire du visage dans les sociétés occidentales, les privilèges et les stigmates qui lui sont associés ainsi que les dangers des procédures de reconnaissance faciale.
À propos de la loi pour contrôler l’immigration, améliorer l’intégration, entretien avec Vito Marinese, docteur en droit public, enseignant à l’Université Paris Nanterre et à l’IEP de Paris, conseiller parlementaire aux lois à l’Assemblée nationale
Authors: Marinese Vito
Published: February 2024

Le présent entretien poursuit la série consacrée, depuis le début de l’année 2024, à la loi sur l’immigration. Vito Marinese revient sur les aspects procéduraux ayant conduit à l’adoption du texte finalement promulgué le 26 janvier dernier.
The city as metaphor: constructing space meaning
Authors: Ramos Ana Margarida
Published: February 2024

The purpose of this paper is to analyse a picturebook – A Cidade [The City], by Inês Fonseca Santos and Beatriz Bagulho – that deals with a symbolic city since it refers to a single building: a cultural centre in the heart of Lisbon. Aimed at promoting the Centro Cultural de Belém (CCB) [Cultural Centre of Belém] and its cultural activities among young readers, this picturebook depicts the building and its “inhabitants” as a special city, “a city inside a city”, including its history (and anecdotes) and special protagonists. The metaphor used throughout the picturebook reinforces the idea of space cohesion and identity, a sort of a unique ecosystem where art and people can be together. Combining facts and fiction, this picturebook is also distinguished by the way it promotes the idea of an urban setting as a child-friendly space, an uncommon idea in Portuguese children’s literature.
Cellulose-Based Oil Palm Empty Fruit Bunch as an Alternative Filler for Latex Application: A Review
Authors: Dzulkafly Nuur Syuhada , Loke Anson Teh Tian , Azura A. Rashid
Published: February 2024

Cellulose is a natural polymer with good properties that have caught researchers' attention to utilize these natural resources' potential. Cellulose also has been widely used as an alternative filler to replace inorganic filler in polymer composites. This review discussed the extraction of cellulose from oil palm empty fruit bunch (OPEFB). This review focused on the OPEFB due to the emergence of palm oil plantations which creates a high amount of biomass, whereas OPEFB is one of the major contributors. The utilization of cellulose application in the polymer focused on alternative fillers in latex application. The postulate crosslink mechanism in latex films is also described to highlight the potential of OPEFB as fillers in latex application. The utilization of OPEFB cellulose has the potential to be explore as bio-fillers with also impact the crosslinks mechanism in latex system which can improved the properties in latex composites.
Multi-Objective Parametric Optimization of Micro-Electro Discharge Machining of Hastelloy C276 Super Alloy Using Response Surface Methodology and Particle Swarm Optimization
Authors: Parthiban M. , Harinath M. , Krishaanth V.S.S. , Logesh B. , Musthak Ahamed N.J.
Published: February 2024

The need for the application of superalloys in aerospace industries in recent years has increased owing to its benefits such as extensive load-bearing capability under high temperatures. Hastelloy is one such superalloy that is extensively utilized in the aerospace sector because of its good corrosion and heat resistance among the other nickel-based superalloys. In this work, the investigation is conducted to understand the effects of input process parameters such as voltage, pulse off time (Toff), and pulse on time (Ton) on the response variables, namely Material removal rate (MRR), Tool wear rate (TWR), Overcut (OC), and Taper Ratio (TR) during micro-EDM of Hastelloy C276. For micro drilling the Hastelloy C276 material, a copper electrode with a diameter of 0.5 mm is utilized. To investigate the connections between the input and output characteristics, a technique known as the Response Surface Methodology (RSM), which is a collection of mathematical and statistical methodologies, is applied. The experimental runs are carried out with the help of the RSM-based Box-Behnken design (BBD). The experimental outcomes were computed, and ANOVA was used to identify the most influential variables. In addition, particle swarm optimization (PSO) was utilized to optimize the results, which were compared to the Response surface methodology approach. The outcomes of the PSO-optimized results revealed a strong correlation between expected and experimental outcomes over the RSM approach.
Effect of Long Used Machine Oil on the Tribological Behaviour of Cu-Based Gear Materials
Authors: Kaiser Samiul , Ahmed Asif , Sharmila Raisa , Kaiser Mohammad Salim
Published: February 2024

A wear test was performed under the long-used machine oil sliding environment on Cu-based alloys Al-bronze and α-brass. A pin-on-disc wear testing method was applied where normal pressure of 0.255 to 2.55 MPa and a constant sliding speed of 0.641 m/s were considered. For the assessment dry and fresh machine oil sliding environments were also conducted. The results from the experiment demonstrated that the wear rate and friction coefficient in dry sliding condition were much greater for their direct contact but lower under machine oil due to the reduced roughness by the sealing effect as oil forms a thin lubricating film between the contact surfaces. Used oil displayed some degree of higher wear rate along with friction coefficient due to heavy and harmful chemical compounds in it. Al-bronze performed the better wear properties with lower wear rate and coefficient of friction for all the environments as it achieved the strength through different intermetallic formations. In case of α-brass, it had little effect on wear characteristics. Examined by optical microscopy and SEM analysis, worn surfaces showed that Al-bronze improved wear resistance through mild and smooth abrasive grooves filled with oxides in dry sliding conditions. In case of oil sliding environment, smooth surfaces were created by the resistance of the oil film to the direct contact between the surfaces. Used oil sliding conditions reduced the surface smoothness of the Cu and Cu-based alloys for the presence of damaging chemical compounds.
Analytical Studies of Fluid Conveying Pipes on Viscoelastic Foundation Using Differential Transforms Method
Authors: Adeleye Olurotimi A. , Yinusa Ahmed , Diwe Ihuoma V.
Published: February 2024

This study presents an analytical investigation of the vibration of fluid-conveying pipes on viscoelastic foundations using the differential transform method. The effects of a new time dependent viscosity parameter in the modified Winkler viscoelastic foundation is studied and analyzed. The governing equation is a fourth-order partial differential equation with pinned-pinned boundary conditions, which required a special analytical method for solution. The differential transform method was applied to obtain the solution of the governing partial differential equation for the fluid-conveying pipes on viscoelastic foundations. The time-dependent viscosity parameter in the modified Winkler viscoelastic model was implemented and simulated to determine the behavior of the viscoelastic foundation. The obtained analytical solution was validated with Runge-Kutta order four numerical method. The effects of foundation stiffness , coefficient of foundation damping and the frequency mass ratio on the governing model equation were investigated. In addition, the bending and deflection of the pipe on a viscoelastic foundation are compared with those on an elastic foundation. The analytical and the numerical solutions are in good agreement. From the study, it is observed that an increase in the foundation stiffness results in increase in the pipe inherent frequencies. Furthermore, the vibration of the pipe on a viscoelastic foundation shows better control and reduction compared with its vibration on an elastic foundation.
A Robotic Arm Visual Grasp Detection Algorithm Combining 2D Images and 3D Point Clouds
Authors: Hui Nan Mu , Wu Xiao Hui , Han Xiao Wei , Wu Bao Ju
Published: February 2024

Robot grasping detection methods are categorized into two-dimension (2D) and three-dimension (3D) approaches. In 2D grasp detection, gripper pose prediction occurs directly on RedGreenBlue (RGB) images, limiting grasp direction. Conversely, 3D grasp detection predicts gripper pose using 3D point clouds, allowing greater grasp flexibility. However, the data volume of 3D point clouds hampers real-time detection. To address this, this paper proposes a novel grasping detection algorithm that combines 2D images and 3D point clouds. Initially, a Single Shot MultiBox Detector (SSD) network generates 2D prediction boxes on RGB images. Through enhancements to the prior box scaling, the accuracy of bounding the target object is improved. Subsequently, 2D boxes are transformed into 3D frustums, and extraneous data points are removed. By utilizing Random Sampling Consistent Segmentation (RANSAC) and Euclidean Clustering Segmentation Algorithm (ECSA), the target point clouds are isolated, and subsequently, the spatial pose of the target is represented using an Oriented Bounding Box (OBB). Processed point clouds enter an enhanced PointNet Grasp Pose Detection (PointNetGPD) algorithm, In contrast to the original approach involving extensive random sampling of grasp candidates, the enhanced PointNetGPD method enables the selective sampling of grasp candidates by incorporating pose constraints between the target and gripper. Following this, the generated grasp candidates are subjected to evaluation through a scoring process conducted by an assessment network. Ultimately, the robotic arm is guided to perform the grasp associated with the highest score. In the experimental phase, the proposed algorithm demonstrated a high success rate in capturing multiple targets, along with a reduced grasping time. These results underscore the algorithm's superior grasping quality and enhanced real-time performance when compared to similar algorithms.
A Survey of Drones in Agriculture Sector
Authors: Boopalamani J. , Ayswariya P.S. Poorani , Raj S. Pranav , Yagnitha P. , Sarrvesh N. , Jha Abhishek
Published: February 2024

With the increasing population, the demand for food products is increasing day by day. The agriculture sector is adapting to technological reforms of traditional processes to maintain a proper balance between the demand-supply relationship. The intervention of the technology is resulting in the enhanced productivity of the agricultural process, and at the same time, it is also helping in the workload management of the farmers. In the last two decades, unmanned aerial vehicles (UAVs) or drones have emerged as indispensable tools in modern agricultural processes. Drones and allied smart technologies are being used for a variety of applications in this sector. This work presents a comprehensive survey of drones in the agriculture sector. The latest trends in the usage of drones from agricultural viewpoints are discussed. The work emphasizes the drone’s architectures, sensor integration, and availability in the open market. Furthermore, the challenges associated with this technology are also outlined.
Semaglutide and kidney function: friends or enemies?
Authors: Giofrè Federica , Trapanese Vincenzo , Natale Maria Resilde , Vatalaro Clara , Cosentino Francesca , Melina Melania , Pelle Maria Chiara , Carullo Nazareno , Capria Maria , Arturi Franco
Published: February 2024

Semaglutide is a glucagon-like peptide-1 receptor agonist (GLP-1 RAs) approved for the treatment of type 2 diabetes mellitus (T2DM) and chronic weight management in obesity. GLP-1RAs are being investigated to slow the decline of kidney function in type 2 diabetics with chronic kidney disease. These agents prevent renal complications and have proven beneficial effects on cardiac outcomes. We describe a rare case of semaglutide-induced acute kidney injury (AKI) in a young woman with obesity, T2DM, hypertensive cardiomyopathy, and no pre-existing chronic kidney disease (CKD). This case is relevant as GLP1-RAs is used frequently in patients with and without kidney disease. Currently, only 3 cases of AKI ascribed to semaglutide of which only 1 without CKD have been described. Only in this case, kidney function improves after semaglutide discontinuation. However, because GLP1-RAs will be prescribed more and more frequently, we sought to highlight this possible, serious adverse effect of semaglutide.
Clinical Characteristics of Diabetes in People with Mitochondrial DNA 3243A>G Mutation in Korea
Authors: Rho Eun Hoo , Baek Sang Ik , Lee Heerah , Seong Moon-Woo , Chae Jong-Hee , Park Kyong Soo , Kwak Soo Heon
Published: February 2024

Maternally inherited diabetes and deafness (MIDD) is a rare mitochondrial disorder primarily resulting from m.3243A>G mutation. The clinical characteristics of MIDD exhibit significant heterogeneity. Our study aims to delineate these characteristics and determine the potential correlation with m.3243A>G heteroplasmy levels. This retrospective, descriptive study encompassed patients with confirmed m.3243A>G mutation and diabetes mellitus at Seoul National University Hospital. Our cohort comprises 40 patients with MIDD, with a mean age at study enrollment of 33.3±12.9 years and an average % of heteroplasmy of 30.0%± 14.6% in the peripheral blood. The most prevalent comorbidity was hearing loss (90%), followed by albuminuria (61%), seizure (38%), and stroke (33%). We observed a significant negative correlation between % of heteroplasmy and age at diabetes diagnosis. These clinical features can aid in the suspicion of MIDD and further consideration of genetic testing for m.3243A>G mutation.
Closed-field Auditory Spatial Perception and Its Relationship to Musical Aptitude
Authors: Upadhya Sushmitha , Bhattacharyya Rohit , Jargar Ritwik , Venkateswaran K. Nisha
Published: February 2024

Introduction:

Musical aptitude is the innate ability of an individual to understand, appreciate, improvise, and have a good sense of pitch and rhythm, even without undergoing formal musical training. The present study aimed to understand the effect of musical aptitude on auditory spatial perception.

Method:

Forty nonmusicians were subjected to a musical aptitude test Mini Profile of Music Perception Skills (Mini-PROMS) based on which they were divided into two groups. Group I included 20 nonmusicians with good musical aptitude (NM-GA) and Group II comprised 20 nonmusicians with poor musical aptitude (NM-PA). Auditory spatial tests included interaural time difference (ITD) and interaural level difference (ILD) threshold tests and a closed-field spatial test called virtual acoustic space identification (VASI) test.

Results:

Kruskal–Wallis test revealed a significant difference between Group I (NM-GA) and Group II (NM-PA) in ITD (p < 0.001), ILD (p = 0.002), and VASI (p = 0.012) tests, suggesting the role of musical aptitude in auditory spatial perception. Correlational analyses showed a moderate positive correlation between Mini-PROMS scores with VASI (r = 0.31, p = 0.04) and a moderate negative correlation with ILD (r = −0.3, p = 0.04) and ITD (r = −0.5, p = 0.001).

Conclusion:

This study defines a positive association between musical aptitude and auditory spatial perception. Further research should include a comparison of spatial skills among musicians and nonmusicians with good musical aptitude.
Aural (Re)habilitation Outcomes among Children with Unilateral Cochlear Implants in India: A Systematic Review
Authors: Ramkumar Vidya , Thangaraj Muthuselvi , Dawson Gladys Prathiba
Published: February 2024

Introduction:

Cochlear implantation has now existed as an intervention for prelingual childhood hearing loss in our country for over two and a half decades. There is a significant need to understand the outcomes achieved in our context to promote the optimization of cochlear implant (CI) as a strategy for early intervention among children with prelingual hearing impairment. The aim of this study was to report auditory, speech-language, and educational outcomes among children with unilateral CIs in India based on the age of implantation and duration of implant use.

Methods:

Three primary databases (PubMed [including MEDLINE], SCOPUS, and Google Scholar) were searched using predetermined search strategies. This review included studies that described outcomes of children who underwent unilateral cochlear implantation under the age of 12 years. Studies with a minimum sample size of 10, published between 2000 and 2022 in English language, and reporting data from India were included. Cross-sectional, cohort, case–control, and randomized control study designs reporting quantitative data were considered.

Results:

A total of 32 studies qualified for the systematic review. The majority of studies reported that the age of cochlear implantation among their participants was between 3 and 6 years (72%). There were limited data on the postimplant timelines when sentence-level auditory comprehension and spontaneous connected speech were achieved. There was no data from any study on the integration of children with CI into mainstream schools. Factors such as prior hearing aid use, age of implantation, or duration of implantation were not taken into consideration as confounders.

Conclusion:

This systematic review suggests that aural re/habilitation outcomes in relation to CI are primarily limited to 1-year post-CI follow-ups. The success rate of open-set sentence/word auditory comprehension, verbal language outcomes with regard to connected speech as well as integration to mainstream education is unknown. Since the number of studies was so less, studies with high bias were not excluded based on quality evaluation. However, it is advised for readers to exercise caution when interpreting the data from these studies. In order to fully understand the value of cochlear implantation as an early intervention strategy in our country, future studies on outcomes should address these methodological flaws and restrictions, improve reporting (publications) of outcomes, conduct long-term follow-up studies, multi-center studies, and use appropriate research designs.
On restricted Falconer distance sets
Authors: Gaitan José , Greenleaf Allan , Palsson Eyvindur Ari , Psaromiligkos Georgios
Published: February 2024

We introduce a class of Falconer distance problems, which we call of restricted type, lying between the classical version and its pinned variant. Prototypical restricted distance sets are the diagonal distance sets,k-point configuration sets given by$$ \begin{align*}\Delta^{\mathrm{diag}}(E)= \{ \,|(x,x,\dots,x)-(y_1,y_2,\dots,y_{k-1})| : x, y_1, \dots,y_{k-1} \in E\, \}\end{align*} $$for a compact$E\subset \mathbb {R}^d$and$k\ge 3$. We show that$\Delta ^{\mathrm{diag}}(E)$has non-empty interior if the Hausdorff dimension ofEsatisfies(0.1)$$ \begin{align} \dim(E)> \begin{cases} \frac{2d+1}3, & k=3, \\ \frac{(k-1)d}k,& k\ge 4. \end{cases} \end{align} $$We prove an extension of this to$C^\omega $Riemannian metricsgclose to the product of Euclidean metrics. For product metrics, this follows from known results on pinned distance sets, but to obtain a result for general perturbationsg, we present a sequence of proofs of partial results, leading up to the proof of the full result, which is based on estimates for multilinear Fourier integral operators.
Trou spectral dans les groupes simples
Authors: He Weikun , de Saxcé Nicolas
Published: February 2024

Nous montrons la propriété du trou spectral pour la famille des graphes de Cayley obtenus par réduction modulo

q

d'un sous-groupe de

\mathrm{SL}_d(\Z)

dont l'adhérence de Zariski est un groupe algébrique absolument simple.
Interdiszciplináris, eszközhasználatra épülő kurzus hatása a tanár szakos hallgatók motivációjára
Authors: Oláhné Téglási Ilona , Kovács Zoltán
Published: February 2024

Nemzetközi szinten egyre nagyobb hangsúly van a közoktatásban az interdiszciplináris megközelítéseken. Ezért fontosnak tartjuk, hogy a pedagógusképzésben is megjelenjen ez a tendencia. Cikkünkben egy nemzetközi együttműködésben fejlesztett, eszközhasználatra építő módszertani kurzus bemutatásával és vizsgálatával szeretnénk erre példát adni. Kutatásunkban a 2021/22-es akadémiai év során kialakított és több partnerintézményben kipróbált kurzusok hatását vizsgáljuk a hallgatók motivációjára. A kurzusokon a pedagógusképzés különböző területein, az óvodapedagógus-, gyógypedagógus- és tanítóképzéstől a középiskolaitanár-képzésig terjedő skálán tanulmányokat folytató hallgatók vettek részt. A kurzus céljainak, felépítésének, a hallgatók tevékenységeinek bemutatása után a motivációs kérdőívek visszajelzéseinek elemzését és az abból levonható következtetéseket mutatjuk be.
Fantázia és valóság : Tanári kompetenciák, fenntarthatósági és környezeti nevelési indikátorok megjelenése felvételizők motivációs leveleiben
Authors: Sándor József , Kopasz Adrien Réka
Published: February 2024

A 20. század végén a jó pedagógus fáradhatatlan lelkesedéssel dolgozó mester, ideális példakép, kifogástalan szaktudásával és életével nevelő, magas társadalmi státuszú ember. (Bagdy, 1993) A társadalmi és gazdasági változások hatására a tanár szerepe a 21. században átalakult. A tudásközvetítést szolgáltatásként megvalósító szakember, mentor és a szocializációt elősegítő nevelési partner feladatai kiegészültek az élethosszig tartó tanulást közvetítő és megvalósító emberképpel. Napjainkra a tanári feladatok olyan összetettséget értek el, hogy az életpályamodell előírásai 8 kompetencia 66 indikátorában tudják csak összefoglalni. (Útmutató a pedagógusok minősítési rendszerében a Pedagógus I. és Pedagógus II. fokozatba lépéshez, 2019) A kutatásban vizsgáltuk, hogy a pedagóguspályát választó fiatalok előzetes elvárásaikban megközelítik-e ezt a komplexitást. Az EKKE tanár szakjaira jelentkezők motivációs leveleit dokumentumelemzéssel vizsgáltuk (N = 120). Nyomon követtük a pedagóguskompetenciák és a szakmai indikátorok megjelenését. Korrelációanalízissel megállapítottuk a levelekben megjelenő tanári személyiségjegyek és a pedagóguskompetenciák közötti összefüggéseket.
Tanulói elégedettségi mérés az EKKE Gyakorló Gimnáziumának fizika laborfoglalkozásaival kapcsolatban
Authors: Bátori Gabriella
Published: February 2024

A természettudományos és ezen belül a fizika tantárgy oktatásában axiómaként fogalmazódik meg a következő két állítás: 1. A természettudományos tantárgyaknak alapvető rendeltetésük: a világ megismerése, kiemelkedő feladatuk van a lényeglátás készségének fejlesztésében, emiatt fontos szerepet kell kapniuk az iskolai oktatás-nevelés folyamatában (Dr. Vida, Misz, 2011.) 2. Egy versenyképesen fejlődő gazdaságban, az innovatív gondolkodás biztosításához elengedhetetlen a természettudományok területén gyakorlati tudással rendelkező szakemberek képzése.
REVOLUTIONISING CUSTOMER ENGAGEMENT: UNLEASHING HYPER-PERSONALIZATION STRATEGIES FOR AN ENHANCED EXPERIENCE
Authors: Katyal Aarushi
Published: February 2024

This research paper explores the application of hyper-personalization in enhancing customer experiences, focusing on a Forklift Company as a case study. The company, a leading material handling equipment provider in the Pacific Northwest, faces challenges in a competitive forklift market characterised by economic unpredictability, regional industrial nuances, and logistical complexities. Through executive interviews and a comprehensive market survey, the paper uncovers insights into the forklift industry in the Northwest. Key findings include regional economic fluctuations, intense competition, and specific industry needs influencing forklift demand. The company's commitment to sustainability and innovation, evidenced by advancements like hydrogen fuel cell forklifts, aligns with evolving market preferences. Employee interviews shed light on the Forklift Company's resilient work culture, emphasising continuous improvement, innovation, and employee well-being. The survey of customer reviews reflects generally high satisfaction levels, with notable commendations for reliability, safety features, and sustainability efforts. However, concerns about pricing and customer support are identified. The conclusion highlights the importance of personalised marketing strategies for the Company to address these challenges and enhance customer engagement. Recommendations include data-driven insights, tailored product recommendations, customer segmentation, a multichannel approach, customised content, regular engagement, and feedback loops. Implementing these strategies can position the company for increased sales and customer satisfaction in a competitive market landscape.
SOCIOECONOMIC DISPARITIES IN HEALTH CONSUMPTION: UNCOVERING BARRIERS AND PATHWAYS TO EQUITABLE ACCESS
Authors: Reddy Arjun
Published: February 2024

Understanding decision-making in health consumption promises several crucial insights into India’s healthcare landscape. By analyzing the influence of socioeconomic status on healthcare choices, policymakers and researchers can develop tailored interventions and strategies to bridge the gaps in access and improve health outcomes for marginalized populations. This paper investigates the relationship between income levels, education, occupation, and access to healthcare services among diverse populations in India. By reviewing existing literature and case studies of low-income communities, this study aims to uncover patterns, barriers, and pathways to equitable access. Through an in-depth understanding of the complex interplay between economic factors and health decisions, this research underscores the urgency for targeted interventions and policies that address health through evidence-based interventions. Lastly, it argues for the relevance of such findings in promoting equitable access and improving the wellbeing of India's population.
From Capital to Commons
Authors: Gerhardt Hannes
Published: February 2024

This stimulating analysis from Hannes Gerhardt shows how technology-led and commons-oriented strategies can create fairer economies and societies. Setting out the role of various digital tools with concrete examples of their value, it is a constructive and optimistic guide to overcoming anti-capitalist barriers.